DMT028QVHXCMI-1A

## **TFT DISPLAY MODULE** _Product Specification_ 

|Customer|Customer|Standard||
|---|---|---|---|
|Product<br>Number||DMT028QVHXCMI-1A||
|Customer Part|Customer Part|||
|Number||||
|Customer<br>Approval|Customer||**Date:**|



|Internal Approvals|Internal Approvals|Internal Approvals|
|---|---|---|
|Product Mgr|Doc. Control|Electr. Eng|
|Luo Luo|Luo Luo|David Hardman|
|**Date: 01/07/17**|**Date: 01/07/17**|**Date:  01/07/17**|



## Revision Record 

|Rev.|Date|Page|Chapt.|Comment|ECR no.|
|---|---|---|---|---|---|
|1.0|01-July-17|All|All|Initial Release||
|||||||
|||||||
|||||||
|||||||
|||||||
|||||||



**Product N[o] : DMT028QVHXCMI-1A REV 1.0** ©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

2 of 31 

## Table of Contents 

|**1.0**|**MAIN FEATURES ................................................................................................... 5**|
|---|---|
|**2.0**|**MECHANICAL SPECIFICATION ............................................................................... 6**|
|**2.1 Mechanical Characteristics ....................................................................................................................... 6**||
|**2.2 Mechanical Drawing ................................................................................................................................. 7**||
|**3.0**|**ELECTRICAL SPECIFICATION .................................................................................. 8**|
|**3.1 Absolute Maximum Ratings ..................................................................................................................... 8**||
|3.1.1|TFT........................................................................................................................................................... 8|
|3.1.2|PCT .......................................................................................................................................................... 8|
|**3.2 Electrical Characteristics........................................................................................................................... 9**||
|3.2.1|TFT........................................................................................................................................................... 9|
|3.2.2|PCT .......................................................................................................................................................... 9|
|**3.3 Interface Pin Assignment ....................................................................................................................... 10**||
|3.3.1|TFT Pin Assignment ............................................................................................................................... 10|
|3.3.2|PCT PIN ASSIGNMENT ........................................................................................................................... 11|
|**3.4 Timing Characteristics ............................................................................................................................ 12**||
|3.4.1|AC Characteristics ................................................................................................................................. 12|
|3.4.2|Display Serial Interface Timing Characteristics ..................................................................................... 14|
|3.4.3|Parallel RGB Interface Timing Characteristics ....................................................................................... 16|
|3.4.4|Reset Timing Characteristics ................................................................................................................. 17|
|3.5.1|I2C Interface .......................................................................................................................................... 19|
|**4.0**|**OPTICAL SPECIFICATION ..................................................................................... 20**|
|**4.1 Optical Characteristics............................................................................................................................ 20**||
|4.1.1|Test Method .......................................................................................................................................... 21|
|**5.0**|**BACKLIGHT SPECIFICATION ................................................................................. 22**|
|**5.1 LED**|**Driving Conditions ........................................................................................................................... 22**|
|**5.2 LED**|**Circuit .............................................................................................................................................. 22**|
|**6.0**|**QUALITY ASSURANCE SPECIFICATION ................................................................. 23**|
|**6.1 Delivery Inspection Standards ................................................................................................................ 23**||
|6.1.1|Inspection Conditions ........................................................................................................................... 23|
|6.1.2|Environmental Conditions .................................................................................................................... 23|
|6.1.3|Sampling Conditions ............................................................................................................................. 23|



## **Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

3 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

|6.1.4|Definition of Area .................................................................................................................................. 24|
|---|---|
|6.1.5|Basic Principle ....................................................................................................................................... 24|
|6.1.6|Inspection Criteria ................................................................................................................................. 25|
|6.1.7|Classification of Defects ........................................................................................................................ 28|
|6.1.8|Identification / marking criteria ............................................................................................................ 28|
|**6.2 Dealing with Customer Complaints ........................................................................................................ 29**||
|6.2.1|Non-conforming analysis ...................................................................................................................... 29|
|6.2.2|Handling of non-conforming displays ................................................................................................... 29|
|**7.0**|**RELIABILITY SPECIFICATION ................................................................................ 30**|
|**7.1 Reliability Tests ...................................................................................................................................... 30**||
|**8.0**|**HANDLING PRECAUTIONS .................................................................................. 31**|



**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

4 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## 1.0 Main Features 

|Item|Contents|
|---|---|
|Screen Size|2.8” Diagonal|
|Display Format|240 x RGB x 320 Dots|
|N° of Colour|65K/262K|
|Active Area|43.20 mm (V) x 57.60 mm (H)|
|PCT View Area|44.20 (V) x 58.60 mm (H)|
|LCD Type|TFT|
|Mode|Transmissive / Normally Black|
|Viewing Direction|ALL|
|TFT Interface|8/9/16/18 bit 8080 MCU<br>3/4-wire SPI<br>3/4-wire SPI+16/18 bit RGB|
|PCT Interface|I2C|
|TFT Driver IC|ST7789V|
|PCT Driver IC|FT6236|
|Simultaneous Touch Points|1|
|Backlight Type|LED|
|Operating Temperature|-20°C ~ +70°C|
|Storage Temperature|-30°C ~ +80°C|
|RoHS compliant|Yes|



**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

5 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## 2.0 Mechanical Specification 

## **2.1 Mechanical Characteristics** 

|Item|Characteristic|Unit|
|---|---|---|
|Overall Dimensions|56.10 mm (H) x 77.29 mm (V) x 4.38 mm (D)|mm|
|pixel Pitch|180 (H) x 180 (V)|µm|
|Weight|TBD|g|



**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

6 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## **2.2 Mechanical Drawing** 

**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

7 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## 3.0 Electrical Specification 

## **3.1 Absolute Maximum Ratings** 

## 3.1.1 TFT 

|Item|Symbol|Condition|Min|Max|Unit|Note|
|---|---|---|---|---|---|---|
|Power Supply Voltage<br>LCM|VCI||-0.3|4.6|V||
|Digital Interface Supply<br>Voltage|IOVCC||-0.3|4.6|V||
|Operating Temperature|TOP||-20|70|°C|1|
|Storage Temperature|TST||-30|80|°C|1,2,3|



## **Note 1.** 90 % RH Max for Ta<50 °C, and 60% RH for Ta≥50°C. 

- **Note 2.** In case of below 0°C, the response time of liquid crystal (LC) becomes slower and the colour of panel becomes darker than normal one. Level of retardation depends on temperature, because of LC's characteristic. 

- **Note 3.** Only operation is guaranteed at operating temperature. Contrast, response time, another display quality are evaluated at +25°C. 

## 3.1.2 PCT 

|Item|Symbol|Condition|Min|Max|Unit|Note|
|---|---|---|---|---|---|---|
|Power Supply<br>Voltage|VDD||-0.3|3.6|V|4|
|Operating<br>Temperature|TOP||-20|70|°C|-|
|Storage<br>Temperature|TST||-30|80|°C|-|



- **Note 4.** If used beyond the absolute maximum ratings, FT6236 may be permanently damaged. It is strongly recommended that the device be used within the electrical characteristics in normal operations. If exposed to the condition not within the electrical characteristics, it may affect the reliability of the device. 

**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

8 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## **3.2 Electrical Characteristics** 

## 3.2.1 TFT 

|Item|Symbol|Condition|Min|Typ|Max|Unit|Note|
|---|---|---|---|---|---|---|---|
|Supply Voltage|VCl|Ta=25˚C|2.4|2.8|3.3|V||
|Digital Interface<br>SupplyVoltage|IOVCC|Ta=25˚C|1.65|1.8|3.3|||
|Input Voltage for Logic|VIH||0.7IOVCC|-|IOVCC|V||
||GND||GND|-|0.3 IOVCC|V||
|Output Voltage for<br>Logic|VOH||0.8IOVCC|-|IOVCC|V||
||VOL||GND|-|0.2IOVCC|V||
|Current Consumption|IDD||-|6.8|-|mA|1|



**Note 1:** The specified power consumption is under the conditions of VDD=3.3V. 

## 3.2.2 PCT 

|Item|Symb<br>ol|Condition|Min|Typ|Max|Unit|Note|
|---|---|---|---|---|---|---|---|
|Supply Voltage|VDD||2.8|3.3|3.6|V||
|Input Voltage for<br>Logic|VIH||0.7 VDDIO|-|VDDIO|V||
||VIL||-0.3|-|0.3 VDDIO|V||
|Output Voltage for<br>Logic|VOH|IOH =<br>01.mA|0.7 VDDIO|-|-|V||
||VOL||-|-|0.3 VDDIO|V||
|Normal operation<br>mode<br>Current<br>Consumption|IOPR|VDD=2.8V<br>Ta=25℃<br>MCLK=<br>17.5MHz|-|4|-|mA||
|Monitor mode<br>Current<br>Consumption|IMON||-|1.5|-|mA||
|Sleep mode<br>Current<br>Consumption|ISLP||-|50|-|uA||



**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

9 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## **3.3 Interface Pin Assignment** 

## 3.3.1 TFT Pin Assignment 

|No.|Symbol|Function|
|---|---|---|
|1|GND|Ground.|
|2|XR(NC)|Touch panel Right Glass Terminal|
|3|YD(NC)|Touch panel Bottom Film Terminal|
|4|XL(NC)|Touch panel LIFT Glass Terminal|
|5|YU(NC)|Touch panel Top Film Terminal|
|6|IOVCC|Supply voltage for IO (1.8-3.3V).<br>Supply voltage for IO (1.8-3.3V).<br>Supplyvoltage(3.3V).|
|7|IOVCC|Red data input.|
|8|VCI|Red data input.|
|9|VCI|Supply voltage (3.3V).|
|10|IM2|MPU Parallel interface bus and serial interface<br>select If use RGB Interface must select serial interface.<br>Fix thispin at IOVCC and GND.|
|11|IM1|Line synchronizing signal for RGB Interface mode.<br>If not used, please connect to GND or IOVCC.|
|12|IM0|Pixel clock signal for RGB Interface mode.<br>If not used, please connect to GND or IOVCC.|
|13|RESET|This signal will reset the device and must be applied to<br>properlyinitialize the chip.|
|14|CS|Chip select input pin (“Low” enable).<br>Fix thispin at IOVCC or GND when not in use.|
|15|RS(SPI-<br>SCL)|This pin is used to select “Data or Command” in the parallel<br>interface. When D/CX = ‘1‘, data is selected. When D/CX = ‘0‘,<br>command is selected. This pin is used serial interface clock in<br>3-wire 9-bit / 4-wire 8-bit serial data interface.<br>Fix thispin at IOVCC or GND when not in use.|
|16|WR(SPI-<br>RS)|The data is applied on the rising edge of the SCL signal.<br>Fix thispin at IOVCC or GND when not in use.|
|17|RD|Serves as a read signal and MCU read data at the rising edge.<br>Fix thispin at IOVCC or GND when not in use|
|18|VSYNC|Frame synchronizing signal for RGB interface operation.<br>Fix thispin at IOVCC or GND when not in use.|
|19|HSYNC|Line synchronizing signal for RGB interface operation.<br>Fix thispin at IOVCC or GND when not in use.|



**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

10 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

|No.|Symbol|Function|
|---|---|---|
|20|ENABLE|Data enable signal for RGB interface operation.<br>Fix thispin at IOVCC or GND when not in use.|
|21|DOTCLK|Dot clock signal for RGB interface operation. Fix this pin at<br>IOVCC or GND when not in use.|
|22|SDA|Serial input signal. The data is applied on the rising edge of<br>the SCL signal.<br>If not used,fix thispin at IOVCC or GND.|
|23-40|DB0-<br>DB7|Data bus.<br>If not usedpin,fix thispin to GND.|
|41|SDO|SPI interface output pin.<br>-The data is output on the falling edge of the SCL signal.<br>-If not used,let thispin open.|
|42|GND|Ground.|
|43|LEDA|Anode pin of backlight|
|44|LEDK1|Cathode pin OF backlight|
|45|LEDK2|Cathode pin OF backlight|
|46|LEDK3|Cathode pin OF backlight|
|47|LEDK4|Cathode pin OF backlight|
|48|LEDK5|Cathode pin OF backlight|
|49|LEDK6|Cathode pin OF backlight|
|50|GND|Ground.|



## 3.3.2 PCT PIN ASSIGNMENT 

|NO.|SYMBOL|DISCRIPTION|
|---|---|---|
|1|GND|Ground.|
|2|VDDIO|I/O power supply voltage|
|3|VDD|Supply voltage.|
|4|SCL|I2C clock input.|
|5|SDA|I2C data input and output|
|6|INT|External interrupt to the host.|
|7|RST|External Reset, Low is active.|
|8|GND|Ground.|



**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

11 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## **3.4 Timing Characteristics** 

## 3.4.1 AC Characteristics 

8080 Series MCU parallel interface timing characteristics: 18/16/9/8-bit bus 

**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

12 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

13 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## 3.4.2 Display Serial Interface Timing Characteristics 

_IOVCC = 1.65 to 3.3V VCI = 2.4 to 3.3V AGND = DGND = 0V Ta = -30 to 70°C_ 

## 3-line SPI system 

**==> picture [124 x 36] intentionally omitted <==**

**----- Start of picture text -----**<br>
Sorat | Syne |<br>**----- End of picture text -----**<br>


**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

14 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## 4-line SPI system 

**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

15 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## 3.4.3 Parallel RGB Interface Timing Characteristics 

_IOVCC = 1.65 to 3.3V VCI = 2.4 to 3.3V AGND = DGND = 0V Ta = -30 to 70°C_ 

**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

16 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## 3.4.4 Reset Timing Characteristics 

## _IOVCC = 1.65 to 3.3V VCI = 2.4 to 3.3V AGND = DGND = 0V Ta = -30 to 70°C_ 

**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

17 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## Note: 

1. The reset cancel includes required time for loading the ID bytes, VCOM setting and other settings from NVM (or similar device) to registers. This loading is done every time when there is a HW reset cancel time (tRT) within 5 ms after a rising edge of RESX. 

2. Spike due to an electrostatic discharge on RESX line does not cause irregular system resets according to the table below: 

3. During the reset period, the display will be blank (Maximum time 120 ms, when reset starts in sleep out mode. The display remains in a blank state in sleep in mode). It will then return to the default condition for a hardware reset. 

4. Spike rejection also applies during a valid reset pulse as shown below: 

5. Reset is applied during sleep in mode. 

6. Reset applied during sleep out mode 

7. It is necessary to wait 5msec after releasing RESX before sending commands. The sleep out command cannot be sent for 120msec. 

**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

18 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## 3.5.1 I2C Interface 

**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

19 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## 4.0 Optical Specification 

## **4.1 Optical Characteristics** 

Measuring instruments  : LCD-5100, Eldim, Topcon BM-7 Driving condition: VDD = 3.3V, VSS = 0V Backlight: IF=40mA Measured temperature: Ta ＝ 25 ゜ C 

|Item|Item|Symbol|Condition|Min|Typ|Max|Unit|Note|
|---|---|---|---|---|---|---|---|---|
|Response Time||TR+TF|θ=Ф=0°<br>Normal Viewing<br>Angle|||||2|
|||||-|30|40|ms||
||||||||||
|Contrast Ratio||CR||600|800|-||3|
|Viewing Angle|Left|θL|CR ≥ 10|-|80|-|deg|4|
||Right|θR||-|80|-|deg||
||Up|φU||-|80|-|deg||
||Down|φD||-|80|-|deg||
|Colour Chromaticity|Red|Rx|CR ≥ 10|0.613|0.633|0.653|-|5|
|||Ry||0.325|0.345|0.365|-||
||Green|Gx||0.311|0.331|0.351|-||
|||Gy||0.600|0.620|0.640|-||
||Blue|Bx||0.125|0.145|0.165|-||
|||By||0.048|0.068|0.088|-||
||White|Wx||0.268|0.308|0.348|-||
|||Wy||0.288|0.328|0.368|-||
|Centre Brightness||||580|630|-|cd/m²|6|
|Brightness Distribution||||80|-|-|%|7|



**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

20 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## 4.1.1 Test Method 

|Note|Item|Test Method|
|---|---|---|
|1|Setup|The display should be stabilised at a given temperature for 30 minutes to avoid abrupt<br>temperature change during measuring. In order to stabilise the luminance, measurements<br>should be executed after lighting the backlight for 30 minutes in a windless room.<br>Display<br>LCD Panel<br>Photometer<br>Center of the Sereen<br>(TOPCONBM-7Fast)<br>|<br>FieldofView=22<br>Light ShieldRoom<br>500 mm<br>(Ambient Luminance < 1 lux)|
|2|Response time|Measure output signal waveform by the luminance meter when raster of window pattern is<br>changed from white to black and from black to white.<br>White<br>Black<br>White<br>W=hite<br>100%<br>90%<br>10%<br>0%<br>Black<br>TON<br>TOFF|
|3|Contrast ratio|Measure maximum brightness and minimum brightness at the centre of the screen by<br>displaying raster or window pattern. Then calculate the ratio between these two values.<br>Brightness of unselected position (white)<br>Contrast Ratio (CR)  =<br>Brightness of selectedposition(black)|
|4|Viewing angle<br>Horizontal θ<br>Vertical Ø|Move the luminance meter from right to left and up and down and determinate the angles<br>where contrast ratio is 10<br>8=o=0°<br>oD<br>ou<br>I<br>SZ<<br>lock<br>9 o'clock<br>x<br><<br>12 o’cloc<br>><br>'<br>OL i.<br>7<br>an<br>2 Se<br>6 o'clock<br>c<br>y-<br>“x+<br>3 o’clock|
|5|Colour<br>chromaticity|Measure chromaticity coordinates x and y of CIE1931 colorimetric system|
|6|Centre<br>brightness|Measure the brightness at the centre of the screen|
|7|Brightness<br>distribution|(Brightness distribution) = 100 x B/A %<br>A: max. brightness of the 9 points<br>B: min. brightness of the 9points|



**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

21 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## 5.0 Backlight Specification 

## **5.1 LED Driving Conditions** 

|Item|Symbol|Condition|Min|Typ|Max|Unit|
|---|---|---|---|---|---|---|
|Forward Current|IF|Ta=25 °C|90|120|-|mA|
|Forward Voltage|VF|Ta= 25°C||3.2||V|
|LED life time|Hr||||50k|hour|



Note: 

- The lifetime of the LED is defined as a period till the brightness of the LED decreases to the half of its initial value. 

- This figure is given as a reference purpose only, and not a guarantee. 

- This figure is estimated for an LED operating alone. The performance of an LED may differ when assembled as a monitor together with a TFT panel due to different environmental temperature. 

- Estimated lifetime could vary on a different temperature and usually higher temperature could reduce the life significantly. 

## **5.2 LED Circuit** 

LED Circuit Drawing 

**Product N[o] : DMT028QVHXCMI-1A REV 1.0** ©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

22 of 31 

## 6.0 Quality Assurance Specification 

## **6.1 Delivery Inspection Standards** 

## 6.1.1 Inspection Conditions 

Inspection distance:  30 cm ± 2 cm Viewing angle: ±45° 

## 6.1.2 Environmental Conditions 

Ambient temperature: 25°C ±5°C Ambient humidity: 65±10% RH Ambient illumination: 300~700 lux 

## 6.1.3 Sampling Conditions 

1. Lot size: quantity of shipment lot per model 

2. Sampling method: GB/T 2828-2003 Sampling Plan Normal inspection, Class II Major Defect 0.65% AQL Minor Defect 1.5% ~~———~~ Items to be Classification No Criteria ~~——~~ inspected of defects 1) No display, Open or miss line 2) Display abnormally, Short 1 Functional defects 3) Backlight no lighting, abnormal lighting. 4) TP no function Major 2 Missing Missing component Overall outline dimension beyond the drawing 3 Outline dimension is not allowed ~~ff~~ 4 Color tone Color unevenness, refer to limited sample ~~pp~~ Light dot，Dim spot,Polarizer  Bubble ; 5 Spot Line defect Minor Polarizer accidented spot. Soldering 6 Good soldering , Peeling off is not allowed. ~~ne~~ appearance ~~ee ee~~ **Product N[o] : DMT028QVHXCMI-1A REV 1.0** 23 of 31 ©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

23 of 31 

## 6.1.4 Definition of Area 

Zone A : Effective Viewing  Area(Character or Digit can be seen) Zone B : Viewing Area except Zone A 

Zone C : Outside (Zone A+Zone B) which can not be seen after assembly by customer .) Zone D : IC Bonding Area 

Note: 

As a general rule ,visual defects in Zone C can be ignored when it doesn’t effect product function or appearance after assembly by customer 

## 6.1.5 Basic Principle 

A set of sample to indicate the limit of acceptable quality level shall be discussed should a dispute occur. 

**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

24 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## 6.1.6 Inspection Criteria 

|Number|Items|||||||Criteria(mm)|Criteria(mm)||
|---|---|---|---|---|---|---|---|---|---|---|
|1.0   LCD<br>Crack/Broken<br>NOTE:<br>X: Length<br>Y: Width<br>Z: Height<br>L: Length of ITO,<br>T: Height of LCD|(1) The edge of LCD<br>broken||||||||||
||||X|||||Y||Z|
||||≤3.0mm||||<Inner border line of the seal|||≤T|
||||||||||||
||(2)LCD corner broken||||||||||
||||||||||||
||||X||||||Y|Z|
||||≤3.0mm||||||≤L|≤T|
||||||||||||
||(3) LCD crack||||||||||
||||||||||||
||||||||||||
||||||||||||
||||||||||||
||||||||||||
||||||||||||
||||||||||Crack||
||||||||||Not  allowed||
||||||||||||



**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

25 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

|2.0|Spot defect<br>Y<br>X<br>Φ=(X+Y)/2||① light dot（LCD/TP/Polarizer black/white spot , light dot, pinhole, dent, stain）<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.10<br>Ignore<br>Ignore<br>0.10<Φ≤0.25<br>3( distance≧10mm)<br>0.25<Φ≤0.3<br>2<br>Φ>0.35<br>0<br>②Dim spot（LCD/TP/Polarizer dim dot, light leakage、dark spot）<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.1<br>Ignore<br>Ignore<br>0.10<Φ≤0.25<br>3( distance≧10mm)<br>0.25<Φ≤0.3<br>2<br>Φ>0.35<br>0<br>③Polarizer accidented spot<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.2<br>Ignore<br>Ignore<br>0.3<Φ≤0.5<br>2( distance≧10mm)<br>Φ>0.5<br>0<br>④Pixel bad points（light dot，Dim dot, color dot）<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.1<br>Ignore<br>Ignore<br>0.15<Φ≤0.25<br>2( distance≧10mm)<br>Φ>0.3<br>0<br>⑤Polarizer  Bubble<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.2<br>Ignore<br>Ignore<br>0.3<Φ≤0.4<br>3(distance≧10 m)<br>0.5<Φ≤0.6<br>2<br>0.6<Φ<br>0|① light dot（LCD/TP/Polarizer black/white spot , light dot, pinhole, dent, stain）<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.10<br>Ignore<br>Ignore<br>0.10<Φ≤0.25<br>3( distance≧10mm)<br>0.25<Φ≤0.3<br>2<br>Φ>0.35<br>0<br>②Dim spot（LCD/TP/Polarizer dim dot, light leakage、dark spot）<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.1<br>Ignore<br>Ignore<br>0.10<Φ≤0.25<br>3( distance≧10mm)<br>0.25<Φ≤0.3<br>2<br>Φ>0.35<br>0<br>③Polarizer accidented spot<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.2<br>Ignore<br>Ignore<br>0.3<Φ≤0.5<br>2( distance≧10mm)<br>Φ>0.5<br>0<br>④Pixel bad points（light dot，Dim dot, color dot）<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.1<br>Ignore<br>Ignore<br>0.15<Φ≤0.25<br>2( distance≧10mm)<br>Φ>0.3<br>0<br>⑤Polarizer  Bubble<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.2<br>Ignore<br>Ignore<br>0.3<Φ≤0.4<br>3(distance≧10 m)<br>0.5<Φ≤0.6<br>2<br>0.6<Φ<br>0|① light dot（LCD/TP/Polarizer black/white spot , light dot, pinhole, dent, stain）<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.10<br>Ignore<br>Ignore<br>0.10<Φ≤0.25<br>3( distance≧10mm)<br>0.25<Φ≤0.3<br>2<br>Φ>0.35<br>0<br>②Dim spot（LCD/TP/Polarizer dim dot, light leakage、dark spot）<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.1<br>Ignore<br>Ignore<br>0.10<Φ≤0.25<br>3( distance≧10mm)<br>0.25<Φ≤0.3<br>2<br>Φ>0.35<br>0<br>③Polarizer accidented spot<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.2<br>Ignore<br>Ignore<br>0.3<Φ≤0.5<br>2( distance≧10mm)<br>Φ>0.5<br>0<br>④Pixel bad points（light dot，Dim dot, color dot）<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.1<br>Ignore<br>Ignore<br>0.15<Φ≤0.25<br>2( distance≧10mm)<br>Φ>0.3<br>0<br>⑤Polarizer  Bubble<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.2<br>Ignore<br>Ignore<br>0.3<Φ≤0.4<br>3(distance≧10 m)<br>0.5<Φ≤0.6<br>2<br>0.6<Φ<br>0|① light dot（LCD/TP/Polarizer black/white spot , light dot, pinhole, dent, stain）<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.10<br>Ignore<br>Ignore<br>0.10<Φ≤0.25<br>3( distance≧10mm)<br>0.25<Φ≤0.3<br>2<br>Φ>0.35<br>0<br>②Dim spot（LCD/TP/Polarizer dim dot, light leakage、dark spot）<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.1<br>Ignore<br>Ignore<br>0.10<Φ≤0.25<br>3( distance≧10mm)<br>0.25<Φ≤0.3<br>2<br>Φ>0.35<br>0<br>③Polarizer accidented spot<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.2<br>Ignore<br>Ignore<br>0.3<Φ≤0.5<br>2( distance≧10mm)<br>Φ>0.5<br>0<br>④Pixel bad points（light dot，Dim dot, color dot）<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.1<br>Ignore<br>Ignore<br>0.15<Φ≤0.25<br>2( distance≧10mm)<br>Φ>0.3<br>0<br>⑤Polarizer  Bubble<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.2<br>Ignore<br>Ignore<br>0.3<Φ≤0.4<br>3(distance≧10 m)<br>0.5<Φ≤0.6<br>2<br>0.6<Φ<br>0|① light dot（LCD/TP/Polarizer black/white spot , light dot, pinhole, dent, stain）<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.10<br>Ignore<br>Ignore<br>0.10<Φ≤0.25<br>3( distance≧10mm)<br>0.25<Φ≤0.3<br>2<br>Φ>0.35<br>0<br>②Dim spot（LCD/TP/Polarizer dim dot, light leakage、dark spot）<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.1<br>Ignore<br>Ignore<br>0.10<Φ≤0.25<br>3( distance≧10mm)<br>0.25<Φ≤0.3<br>2<br>Φ>0.35<br>0<br>③Polarizer accidented spot<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.2<br>Ignore<br>Ignore<br>0.3<Φ≤0.5<br>2( distance≧10mm)<br>Φ>0.5<br>0<br>④Pixel bad points（light dot，Dim dot, color dot）<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.1<br>Ignore<br>Ignore<br>0.15<Φ≤0.25<br>2( distance≧10mm)<br>Φ>0.3<br>0<br>⑤Polarizer  Bubble<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.2<br>Ignore<br>Ignore<br>0.3<Φ≤0.4<br>3(distance≧10 m)<br>0.5<Φ≤0.6<br>2<br>0.6<Φ<br>0|① light dot（LCD/TP/Polarizer black/white spot , light dot, pinhole, dent, stain）<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.10<br>Ignore<br>Ignore<br>0.10<Φ≤0.25<br>3( distance≧10mm)<br>0.25<Φ≤0.3<br>2<br>Φ>0.35<br>0<br>②Dim spot（LCD/TP/Polarizer dim dot, light leakage、dark spot）<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.1<br>Ignore<br>Ignore<br>0.10<Φ≤0.25<br>3( distance≧10mm)<br>0.25<Φ≤0.3<br>2<br>Φ>0.35<br>0<br>③Polarizer accidented spot<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.2<br>Ignore<br>Ignore<br>0.3<Φ≤0.5<br>2( distance≧10mm)<br>Φ>0.5<br>0<br>④Pixel bad points（light dot，Dim dot, color dot）<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.1<br>Ignore<br>Ignore<br>0.15<Φ≤0.25<br>2( distance≧10mm)<br>Φ>0.3<br>0<br>⑤Polarizer  Bubble<br>Zone<br>Size (mm)<br>Acceptable Qty<br>A<br>B<br>C<br>Φ≤0.2<br>Ignore<br>Ignore<br>0.3<Φ≤0.4<br>3(distance≧10 m)<br>0.5<Φ≤0.6<br>2<br>0.6<Φ<br>0|
|---|---|---|---|---|---|---|---|---|
||||Zone<br>Size (mm)|Acceptable Qty|||||
|||||A|B||C||
||||Φ≤0.1|Ignore|||Ignore||
||||0.10<Φ≤0.25|3( distance≧10mm)|||||
||||0.25<Φ≤0.3|2|||||
||||Φ>0.35|0|||||
||||③Polarizer accidented spot||||||
||||Zone<br>Size (mm)|Acceptable Qty|||||
|||||A|B||C||
||||Φ≤0.2|Ignore|||Ignore||
||||0.3<Φ≤0.5|2( distance≧10mm)|||||
||||Φ>0.5|0|||||
||||④Pixel bad points（light<br>Zone<br>Size (mm)<br>Φ≤0.1<br>0.15<Φ≤0.25<br>Φ>0.3<br>⑤Polarizer  Bubble|dot，Dim dot, color dot）|||||
|||||Acceptable Qty<br>A<br>B|||||
|||||||B||C|
|||||Ignore|||Ignore||
|||||2( distance≧10mm)|||||
|||||0|||||
||||||||||
||||Zone<br>Size (mm)|Acceptable Qty|||||
|||||A|B||C||
||||Φ≤0.2|Ignore|||Ignore||
||||0.3<Φ≤0.4|3(distance≧10 m)|||||
||||0.5<Φ≤0.6|2|||||
||||0.6<Φ|0|||||



**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

26 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

|3.0|Line defect<br>(LCD/TP<br>/Polarizer<br>backlight<br>black/white line,<br>scratch, stain)|Line defect<br>(LCD/TP<br>/Polarizer<br>backlight<br>black/white line,<br>scratch, stain)|||||||Acceptable Qty<br>A<br>B<br>C<br>Ignore<br>Ignore<br>N≤3<br>N≤2<br>Define as spot defect|Acceptable Qty<br>A<br>B<br>C<br>Ignore<br>Ignore<br>N≤3<br>N≤2<br>Define as spot defect|Acceptable Qty<br>A<br>B<br>C<br>Ignore<br>Ignore<br>N≤3<br>N≤2<br>Define as spot defect|Acceptable Qty<br>A<br>B<br>C<br>Ignore<br>Ignore<br>N≤3<br>N≤2<br>Define as spot defect|Acceptable Qty<br>A<br>B<br>C<br>Ignore<br>Ignore<br>N≤3<br>N≤2<br>Define as spot defect|Acceptable Qty<br>A<br>B<br>C<br>Ignore<br>Ignore<br>N≤3<br>N≤2<br>Define as spot defect|Acceptable Qty<br>A<br>B<br>C<br>Ignore<br>Ignore<br>N≤3<br>N≤2<br>Define as spot defect|Acceptable Qty<br>A<br>B<br>C<br>Ignore<br>Ignore<br>N≤3<br>N≤2<br>Define as spot defect|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|||||Width(mm)|||Length(mm)||Acceptable Qty||||||||
||||||||||A||B|||C|||
|||||Φ≤0.05|||Ignore||Ignore|||||Ignore|||
|||||0.05<W≤0.06|||L≤4.0||N≤3||||||||
|||||0.07<W≤0.08|||L≤3.0||N≤2||||||||
|||||0.08<W|||||Define as spot defect||||||||
||||||||||||||||||
|4.0|Electronic<br>Components<br>SMT|||Not allow missing parts，solderless connection，cold solder joint，mismatch，<br>The positive and negative polarity opposite|||||||||||||
|5.0|Display color&<br>Brightness|||1. Color：Measuring the color coordinates, The measurement standard accordin<br>g to the datasheet or samples.<br>2. Brightness：Measuring the brightness of White screen, The measurement stan<br>dard according to the datasheet or Samples.|||||||||||||
|6.0|PCT<br>Related|PCT Cover<br>sensor<br>accidented<br>black/white<br>spot||||Size Φ(mm)||Acceptable Qty|||||||||
|||||||||A||B|||C||||
|||||||Φ≤0.1||Ignore|||||Ignore||||
|||||||0.1<Φ≤0.2||3(distance≧10mm）|||||||||
|||||||0.20<Φ≤0.25||||2|||||||
|||||||Φ＞0.3||||0|||||||
|||PCT Cover<br>scratch||||Width(mm)||Ignore(mm)||Acceptable Qty|||||||
|||||||||||A||B|||C||
|||||||Φ≤0.05||Ignore||Ignore|||||||
|||||||0.05<W≤0.06||L≤4.0||N≤3|||||||
|||||||0.07<W≤0.08||L≤3.0||N≤2|||||||
|||||||0.08<W||Define as spot defect|||||||||
|||PCT Cover<br>Pinhole/<br>Lack of ink||||Zone<br>Size (mm)||Acceptable Qty|||||||||
|||||||||C|||||||||
|||||||<br>Φ≤0.1||Ignore|||||||||
|||||||0.1<Φ≤0.2||3(distance≧10mm)|||||||||
|||||||0.25<Φ≤0.3||2|||||||||
|||||||Φ>0.35||0|||||||||
||||||||||||||||||
|||PCT Bonding<br>bubble/<br>accidented<br>spot||||Size Φ(mm)||Acceptable Qty|||||||||
|||||||||A|||B||||||
|||||||Φ≤0.1||Ignore|||||||||
|||||||0.15<Φ≤0.2||3(distance≧10mm）|||||||||
|||||||0.2<Φ≤0.25||2|||||||||
|||||||Φ>0.25||0|||||||||



**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

27 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

**==> picture [453 x 442] intentionally omitted <==**

**----- Start of picture text -----**<br>
Assembly<br>beyond the edge of backlight ≤0.2mm<br>deflection<br>ee<br>X  Y  Z<br>TP cover<br>Y≤0.5m Z<cover<br>broken  X≤0.5mm  m  thickness  X  Z  Y<br>X：length<br>Y：width<br>Z：height  * Circuitry broken is not allowed.<br>-<br>X  Y  Z<br>TP cover<br>broken  Z<LCD   Y<br>X：length  X≤0.3mm  Y≤0.3mm  thickness  X  Z<br>Y：width<br>Z：height  * Circuitry broken is not allowed.<br>Ria<br>Criteria ( functional items)<br>Number  Items  Criteria (mm)<br>1  No display  Not allowed<br>2  Missing segment  Not allowed<br>3  Short  Not allowed<br>4  Backlight no lighting  Not allowed<br>5  TP no function  Not allowed<br>**----- End of picture text -----**<br>


## Criteria ( functional items) 

## 6.1.7 Classification of Defects 

Visual defects (except no or wrong label) are treated as minor defects, while electrical defects are treated as major defects. 

Two minor defects are equal to one major defect in lot sampling inspection. 

## 6.1.8 Identification / marking criteria 

Any unit with illegible / wrong / double or no marking / label shall be rejected. 

## **Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

28 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## **6.2 Dealing with Customer Complaints** 

## 6.2.1 Non-conforming analysis 

Purchaser should supply Densitron with detailed data of non-conforming sample. After accepting it, Densitron should complete the analysis in two weeks from receiving the sample. 

If the analysis cannot be completed on time, Densitron must inform the purchaser. 

## 6.2.2 Handling of non-conforming displays 

If any non-conforming displays are found during customer acceptance inspection which Densitron is clearly responsible for, return them to Densitron. 

Both Densitron and customer should analyse the reason and discuss the handling of nonconforming displays when the reason is not clear. 

Equally, both sides should discuss and come to agreement for issues pertaining to modification of Densitron quality assurance standard. 

**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

29 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## 7.0 Reliability Specification 

## **7.1 Reliability Tests** 

||Test Item|Test Condition|Test Condition|Sample Size|
|---|---|---|---|---|
|Durability Test|High Temperature<br>Operation|Ta= 70˚C|96h|3pcs|
||Low Temperature<br>Operation|Ta=-20˚C|96h|3pcs|
||High Temperature<br>Storage|Tp= 80°C|96h|3pcs|
||Low Temperature<br>Storage|Tp= -30°C|96h|3pcs|
||ESD Test|150pF, 330Ω, ±6KV (Contact)/±8KV<br>(Air),5 Points/panel,10 times/point||3pcs|
||Thermal Shock<br>Resistance|The sample should be allowed to<br>stand the following 5 cycles of<br>operation: LTS for 30 minutes -><br>normal temperature for 5 minutes -><br>HTS for 30 minutes -> normal<br>temperature for 5 minutes, as one<br>cycle, then taking it out and drying it<br>at normal temperature, and allowing<br>it stand for 24 hours||3pcs|
||Box Drop Test|1 Corner 3 Edges 6 faces, 80 cm<br>(Medium Box)||1 box|



Note: Ta=ambient temperature Tp= Panel temperature 

Notes: 

1. No dew condensation to be observed. 

2. The function test shall be conducted after 4 hours storage at the normal temperature and humidity after removed from the test chamber. 

3. No cosmetic or functional defects should be allowed. 

4. Total current consumption should be less than twice the initial value. 

**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

30 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data 

## 8.0 Handling Precautions 

## _**Safety**_ 

If the LCD panel breaks, be careful not to get the liquid crystal fluid in your mouth or in your eyes. If the liquid crystal touches your skin or clothes, wash it off immediately using soap and plenty of water. 

## _**Mounting and Design**_ 

Place a transparent plate (e.g. acrylic, polycarbonate or glass) on the display surface to protect the display from external pressure. Leave a small gap between the transparent plate and the display surface. 

When assembling with a zebra connector, clean the surface of the pads with alcohol and keep the surrounding air very clean. 

Design the system so that no input signal is given unless the power supply voltage is applied. 

## _**Caution during LCD cleaning**_ 

Lightly wipe the display surface with a soft cloth soaked with Isopropyl alcohol, Ethyl alcohol or Trichlorotriflorothane. 

Do not wipe the display surface with dry or hard materials that will damage the polariser surface. Do not use aromatic solvents (toluene and xylene), or ketonic solvents (ketone and acetone). 

## _**Caution against static charge**_ 

As the display uses C-MOS LSI drivers, connect any unused input terminal to VDD or VSS. Do not input any signals before power is turned on. Also, ground your body, work/assembly table and assembly equipment to protect against static electricity. 

## _**Packaging**_ 

Displays use LCD elements, and must be treated as such. Avoid strong shock and drop from a height. To prevent displays from degradation, do not operate or store them exposed directly to sunshine or high temperature/humidity. 

## _**Caution during operation**_ 

It is indispensable to drive the display within the specified voltage limit since excessive voltage shortens its life. Direct current causes an electrochemical reaction with remarkable deterioration of the display quality. Give careful consideration to prevent direct current during ON/OFF timing and during operation. Response time is extremely delayed at temperatures lower than the operating temperature range while, at high temperatures, displays become dark. However, this phenomenon is reversible and does not mean a malfunction or a display that has been permanently damaged. If the display area is pushed on hard during operation, some graphics will be abnormally displayed but returns to a normal condition after turning off the display once. Even a small amount of condensation on the contact pads (terminals) can cause an electro-chemical reaction which causes missing rows and columns. Give careful attention to avoid condensation. 

## _**Storage**_ 

Store the display in a dark place where the temperature is 25°C ± 10°C and the humidity below 50%RH. Store the display in a clean environment, free from dust, organic solvents and corrosive gases. Do not crash, shake or jolt the display (including accessories). 

**Product N[o] : DMT028QVHXCMI-1A REV 1.0** 

31 of 31 

©2017 Densitron Technologies Limited. All rights reserved. Proprietary data