深圳国显科技有限公司Shenzhen K&D Technology Co.,Ltd
SPECIFICATION
FOR
LCD MODULE
Customer:
Product Model: KD43G7-40NM-A2-REVB
Sample code:
Designed by Checked by Approved by
※The specification of “TBD” should refer to the measured value of sample . If there is difference between the design specification and measured value, we naturally shall negotiate and agree to
Revision History
Version Contents Date Note
A Original 2008.12.14
B REV. FP
C OF LENGTH 2009.2.18
Contents
No. Item Page
1. Numbering System 4/26
2 Scope 5/26
3 Normative Reference 5/26
4 Definitions5/26
5 Technology Specifications7/26
6 Circuit block diagram 11/26
7 Initial code 15/26
8 Write/ReadSPI Timing 16/26
9 Reliability Test Condition and Methods 17/26
10 Inspection standard18/26
11 Handling Precautions24/26
12 Precaution for use25/26
13 Dimensional Outline26/26
1 Numbering System
—
(1) (2) (3) (4) (5) (6) (7) (8)
2 Scope
This specification applies to the TFT LCD module which is designed and manufactured by LCM Factory of Shenzhen K&D Technology Co.,Ltd.
It is capable of using 262k colors mode 24bit parallel bi-directional interface.
3 Normative Reference
GB/T4619-1996 《Liquid Crystal Display Test Method》
GB/T2424 《Basic environmental Testing Procedures for Electric and Electronic Products.》
GB/T2423 《Basic Testing Procedures for Electric and Electronic Products》IEC61747-1 《SIXTH PARTGB2828`2829-87《National Standard of PRC》
4 Definitions
4.1 Definitions of Vop
The definitions of threshold voltage Vth1, Vth2 the following typical waveforms are applied on liquid crystal by the method of equalized voltage for each duty and bias.
【 selected waveform 】【 non-selected waveform 】
① Vth1: The voltage which the brightness of segment indicates 50% of saturated value on the conditions of selected waveform
(f f=80Hz, Φ=10°θ=270°at 25℃)
② Vth2: The voltage which the brightness of segment indicates 50% of saturated value on the conditions of non-selected waveform
(f f=80Hz, Φ=10°θ=270°at 25℃)
③ Vop: (Vth1(50%)+Vth2(50%))/2 (f f=80Hz, Φ=10°θ=270°at 25℃)
4.2 Definition of Response Time Tr, Td
①
Tr: The time required which the brightness of segment
becomes 10% from 100% when waveform is switched to
selected one from non-selected one. (f f=80Hz,
℃
Φ=10°θ=270°at 25)
Td: The time required which the brightness of segment
②
becomes 90% from 10% when waveform is switched to
selected one from selected one. (f f=80Hz, Φ=10°θ=270°at
25)
℃
4.3 Definition of Contrast Ratio Cr
Cr=A/B
① A: Segments brightness in case of non-selected waveform
② B: Segments brightness in case of selected waveform
4.4 Definition of Angle and Viewing Range
Angular Graph: Constrast Ratio
Such as:
Viewing Angle Range:
80(Cr>2) Horizontal
70(Cr>2) Vertical
5 Technology Specifications
5.1 Feature
This single-display module is suitable for use in Multidedia Player products.
The LCD adopts one backlight with High brightness 10-lamps white LED.
1) Construction: 4.3〞а-Si color TFT-LCD ,White LED backlight, FPC.
2) LCD:
2.1 Amorphous-TFT 4.3-inch display, transmissive, normally white type.
2.2 480(RGB)×272 dots Matrix.
2.3 Narrow-contact ledge technique.
2.4 LCD Driver IC: HX8257-A× 1.
3) Low cross talk by frame rate modulation.
4) 262K Color ,24bit RGB interface.
5) Video signal interface: Parallel RGB .
5.2Mechanical Specifications
Unit Item Specifications
Dimensional outline 105.6(W) ×67.3(H)×3.3 (T) mm
TP outline mm
TP(V.A)
mm
mm TP(A.A)
Active area 95.04(W) ×53.86 (H) mm
Pixel size 198(W) ×198(H) um
Resolution 480(RGB) × 272 pixel
5.3 Absolute Max. Rating
Symbol Value
Unit Remark
Item
Min
typ
Max
power supply VCC 1.8 3.0 3.6 V
Input high voltage V IH0.8VCC - VCC V
0.2VCC V
Input low voltage V IL0 -
Operating temperature T OPR-20 +70 ℃
Storage temperature T STG-30 +80 ℃
Note1 Clock frequency F CLK- 9 15 MHz
Note: For parallel RGB interface, maximum clock frequency is 15MHz,
For serial RGB interface, maximum clock frequency is 33MHz,
5.5 Optical specifications
5.6 LED back light specification (10 White Chips)
Item Symbol Condition Min Typ Max Unit
Forward Voltage Vf lf=40mA 15 16 17 V Uniformity (with L/G) ΔB p lf
=40mA 80 - - % Luminance for LCD L V If =
40mA 5200- - cd/m 2
LED CIRCUIT
5.7 Interface Pin Connections
PIN NO. Symbol Description
1 LED-K LED backlight(Cathode)
2 LED-A LED backlight(anode)
3 GND Ground
4
VCC
Power supply (Digital +3.0V)
5-12 R0-R7 Red Data 13-20 G0-G7 Green Data 21-28 B0-B7 Blue Data 29 GND
Ground 30 CLK Clock signal 31 DISP Display on/off
32 HSYNC Horizontal sync input in RGB mode (short to
GND if not used) 33
VSYNC
Vertical sync input in RGB mode (short to
GND if not used)
34 DEN Data Enable
35 NC NC 36 GND Ground 37 SDI SPI I/O 38 CS SPI I/O 39 SCL SPI I/O 40
SDO
SPI I/O
6 Signal timing diagram and Circuit block diagram 6.1 Circuit block diagram
HX8257A
6.2 Signal Timing Diagram 6.2.1 Power ON Sequence
6.2.2 Power OFF Sequence
6.2.3 Timing Diagram of interface Signal
6.2.4 Input setup Timing requirement
7 Initial code
8 Write/ReadSPI Timing
9 Reliability Test Conditions And Methods O Item
Condition
Method
N 1 High / Low T 80℃/-30℃ 120hrs
Check and record emperature Storage
every 48Hrs
mode) every 48Hrs
High Humidity Operating
every 48hrs
80℃(30Min)
cycles check Amplitude: 1.5mm
Check the pearance and Electrical aracteristic times air discharge with
positive/negative voltage
voltage gap : 1kv) Check the Electrical Characteristics
times/min every
side 、cording 、angle (75cm
High 、6 sides 、2 angle 、2
cording)
2
High / Low Temperature Life 70℃/-20℃ 120hrs (operating
Check and record 3
High
Temperature 、 60℃,90% RH, 96Hrs
Check and record 4 Thermal ck
-30℃(30Min ) 25℃(5Min)
(conversion time, : 5 sec ) 20
Each 10 cycles end ,
Sho 5 Vibration 10Hz~55Hz~10Hz
2hrs for each direction(X,Y ,Z) Each direction end,
Ap
Ch s 6 Static Electricity Gap mood: ±1KV~±8KV (10 Touch mood: ±1KV~±4KV Each discharge end, 7 Curve
60 Thousand times, 40
150°( according to die if exist)Check and record
2~4 thousand times
8 Slump
Free faller movement for each End
10 Inspection standard
x
x
Intensity Of
Adhesion
If lower than specification, reject Gold Fold Twist Reject
Silicon According to outline, no gold outside, seal can not be higher than LCD
07 IC/FPC
Bonding
FPC Gold Sever
Reject
Lack of
Component、
Polarity Inverse
If exist, reject
Leak Solder、
Virtual Solder
If exist, reject
Short Circuit In
Solder Point
If exist, reject
Tin Ball If exist, reject
Tin Acumination If visual, reject
Height
Solder Point If higher 0.5mm than component. reject
08 SMT
Height of component Either side higher 0.5mm than component, reject