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LM240128RCC
LCD Module User Manual
Shenzhen TOPWAY Technology Co., Ltd.
Rev.
0.1 0.2
Descriptions
Preliminary release Revise Initialization Setting Example
Release Date
2005-11-21 2005-11-29
URL:
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Document Name: LM240128RCC-Manual-Rev0.2 Page: 1 of 12
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Table of Content
1.
1.1 1.2 1.3 1.4
LCD Module User Manual
LM240128RCC
Basic Specifications................................................................................................................ 3
Display Specifications ............................................................................................................................................ 3 Mechanical Specifications...................................................................................................................................... 3 Block Diagram........................................................................................................................................................ 3 Terminal Functions................................................................................................................................................. 4
2. 3.
3.1 3.2 3.3
Absolute Maximum Ratings.................................................................................................... 5 Electrical Characteristics........................................................................................................ 5
DC Characteristics ................................................................................................................................................. 5 LED Backlight Circuit Characteristics..................................................................................................................... 5 AC Characteristics ................................................................................................................................................. 6
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4.
Function Specifications .......................................................................................................... 7
Adjusting the Display Contrast ............................................................................................................................... 7 Resetting the LCD module ..................................................................................................................................... 7 Display Pixel Map................................................................................................................................................... 7 Control Data and Command .................................................................................................................................. 8 Register Table Summary ....................................................................................................................................... 8 Initialization Setting Example ............................................................................................................................... 11
4.1 4.2 4.3 4.4 4.5 4.6
5.
Design and Handling Precaution ......................................................................................... 12
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1. Basic Specifications
1.1
LCD Module User Manual
LM240128RCC
Display Specifications 1) LCD Display Mode : FSTN, Positive, Transflective 2) Display Color : Display Data = "1" : Dark Gray (*1) : Display Data = "0" : Light Gray (*2) 3) Viewing Angle :6H 4) Driving Method : 1/128 duty, 1/12 bias 5) Backlight : White LED backlight
Note: *1. Color tone may slightly change by Temperature and Driving Condition. *2. The Color is defined as the inactive / background color
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1.2
Mechanical Specifications 1) Outline Dimension : 144.0 x 104.0 x 12.3MAX see attached Outline Drawing for details Block Diagram
BLA BLK COMMON Driver LED Backlight Circuit
1.3
LCD Panel 240 x 128 pixels
COMMON Driver SEGMENT Driver SEGMENT Driver RA8803 or equivalent SEGMENT Driver Power and Booster Circuit
VDD, VSS VOUT, V0 DB0 - DB7 RS, /RD, /WR BUSY, /CS, /RST
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1.4 Terminal Functions Pin Pin I/O No. Name 1 FG 2 VSS Power 3 VDD Power 4 V0 Input 5 /WR Input 6 /RD Input 7 /CS Input 8
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LCD Module User Manual
LM240128RCC
Descriptions Frame Ground 0V Power Supply, GND Positive Power Supply LCD Contrast Reference Input Write enable input, active LOW Read enable input, active LOW Chip Select Signal
/CS=LOW: Data IO is enabled
RS BUSY /RST
Input Output Input
Register Select
RS=HIGH: data on DB0 to DB7 is display data RS=LOW: data on DB0 to DB7 is control data
9 10
Controller busy signal, MCU should poll this signal before accessing the LCD module Reset Signal:
/RST = L, Reset the LCD Module /RST = H, Normal Running
11 DB0 I/O 8-bit bi-directional data bus : : 18 DB7 19 NC No connection (leave open) 20 VOUT Power Power Booster Output for V0 21 BLA Power Positive Power Supply for LED backlight 22 BLK Power Negative Power Supply for LED backlight 23 BLA Power Positive Power Supply for LED backlight 24 NC No connection (leave open) 25 BLK Power Negative Power Supply for LED backlight Note: BLA supply could be provided to pin 21 or 23 BLK supply could be provided to pin 22 or 25
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Document Name: LM240128RCC-Manual-Rev0.2 Page: 4 of 12
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Items Supply Voltage Input Voltage Operating Temperature Storage Temperature Symbol VDD VIN TOP TST
LCD Module User Manual
LM240128RCC
2. Absolute Maximum Ratings
Min. 0 VSS-0.3 -20 -30 Max. +5.5 VDD+0.3 +70 +80 Unit V V C C Condition
VSS = 0V VSS = 0V No Condensation No Condensation
Cautions: Any Stresses exceeding the Absolute Maximum Ratings may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.
3. Electrical Characteristics
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3.1
DC Characteristics Symbol VDD VIN VIN IDD MIN. 4.8 0.8xVDD VSS TYP. 5.0 9.1 MAX. 5.2 VDD 0.2xVDD 22.8 VSS=0V, VDD =5.0V, TOP =25C Unit Applicable Pin VDD V DB0~DB7, /WR, /RD, /CS, V V mA
RS, /RST DB0~DB7, /WR, /RD, /CS, RS, /RST VDD
Items Operating Voltage Input High Voltage Input Low Voltage Operating Current
Note: System clock=3MHz
3.2
LED Backlight Circuit Characteristics Symbol VfBLA IfBLA MIN. TYP. 5.0 170 MAX. 230 BLK=0V, IfBLA=170mA, TOP =25C Unit Applicable Pin BLA V BLA mA
Items Forward Voltage Forward Current
Cautions: Exceeding the recommended driving current could cause substantial damage to the backlight and shorten its lifetime.
BLA
BLK
No. of LED = 10pcs
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Document Name: LM240128RCC-Manual-Rev0.2 Page: 5 of 12
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3.3 AC Characteristics
LCD Module User Manual
LM240128RCC
Item Symbol MIN. TYP. Address Hold Time tah8 13 Address Setup Time taw8 79 System Cycle Time tcyc8 1000 Strobe Pulse Width tcc8 500 Data Setup Time tds8 79 Data Hold Time tdh8 13 Data Access Time tacc8 Output disable Time toh8 13 www..com Note: *1. Input signal rise/fall time should be less than 20ns *2. System clock=8MHz
VSS=0V, VDD=5.0V, TOP=25C MAX. Unit ns ns ns ns ns ns 413 ns ns
Bus Timing Diagram
3.3.1
Reset Timing Symbol trst trsth MIN. 320 65 VSS=0V, VDD=5.0V, TOP=25C TYP. MAX. Unit ms ms
Item Reset LOW pulse width Reset hold time
Reset Timing Diagram
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Document Name: LM240128RCC-Manual-Rev0.2 Page: 6 of 12
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LCD Module User Manual
LM240128RCC
4. Function Specifications
4.1 Adjusting the Display Contrast A Variable-Resistor must be connected to the LCD module for providing a reference to V0. Adjusting the VR will result the change of LCD display contrast. The recommended value of VR is 25k to 50k LCD module VDD
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V0 VOUT
4.2 Resetting the LCD module The LCD module should be initialized by using /RST terminal. While turning on the VDD and VSS power supply, maintain /RST terminal at LOW level. After the power supply stabilized, release the reset terminal (/RST=HIGH)
4.3
1,1 (D7) 1,2 (D7) 1,3 (D7) : : : 1,126 (D7) 1,127 (D7) 1,128 (D7)
Display Pixel Map
2,1 (D6) 2,2 (D6) 2,3 (D6) : : : 2,126 (D6) 2,127 (D6) 2,128 (D6) 3,1 (D5) 3,2 (D5) 3,3 (D5) : : : 3,126 (D5) 3,127 (D5) 3,128 (D5) 4,1 (D4) 4,2 (D4) 4,3 (D4) : : : 4,126 (D4) 4,127 (D4) 4,128 (D4) 5,1 (D3) 5,2 (D3) 5,3 (D3) : : : 5,126 (D3) 5,127 (D3) 5,128 (D3) ------------236,1 (D4) 236,2 (D4) 236,3 (D4) : : : 236,126 (D4) 236,127 (D4) 236,128 (D4) 237,1 (D3) 237,2 (D3) 237,3 (D3) : : : 237,126 (D3) 237,127 (D3) 237,128 (D3) 238,1 (D2) 238,2 (D2) 238,3 (D2) : : : 238,126 (D2) 238,127 (D2) 238,128 (D2) 239,1 (D1) 239,2 (D1) 239,3 (D1) : : : 239,126 (D1) 239,127 (D1) 239,128 (D1) 240,1 (D0) 240,2 (D0) 240,3 (D0) : : : 240,126 (D0) 240,127 (D0) 240,128 (D0)
: : :
: : :
-------
-------
Pixel mapping (Top View) Based on the top view of the LCD module, the 1, 1 (x, y) pixel is the upper-left pixel; the 240, 128 (x, y) pixel is the lower-right pixel.
Note: *1. For the details of memory mapping please refer to RA8803 datasheet.
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Document Name: LM240128RCC-Manual-Rev0.2 Page: 7 of 12
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LCD Module User Manual
LM240128RCC
4.4 Control Data and Command The LCD module setting is controlled by the internal Register Values. The Register Address and Register Value should be issued in sequence and they are addressed as Control Data. A full command sequence should be as follow.
Steps 1st 2nd /RD 1 1 /WR 0 0 RS 0 0 Data (DB0~ DB7) Register Address Register Value
4.5 www..comRegister
Reg. Add 00h
Table Summary
Reg. Name
WLCR
CR3 CR2 CR1 CR0 DY3 DY2 DY1 DY0
11h
DWLR
R/W
ARI ALG WDI WBC AIX CP CK CSD
10h
WCCR
R/W
----DADR AUCM AUSG SGCM
03h
ADSR
R/W
--SP1 SP0 ORA -SRFS --
02h
APSR
R/W
1 CKN 1 PLR --CKB1 CKB0
01h
MISC
R/W
PW1 PW0 SR -CG DP DK DV
R/W R/W
D7 D6 D5 D4 D3 D2 D1 D0
Descriptions
PW1~PW0 : Power Mode 11=Normal Mode; 00=Off Mode SR : Software Reset 1=reset all register (except DDRAM); 0=normal operation CG : Display mode selection 1=Character Mode; 0=Graphic Mode DP : Display on off control 1=normal display; 0=display off BK : Full screen blinking control 1=blinking (blink time is set by CBTR); 0=normal; DV : Full screen inverse control 1=normal; 0=inversed CKN : Clock output Control (not applicable) 1=enable; 0=disable PLR : Interrupt and Busy Polarity (not applicable) 1=active High; 0=active low CKB1~CKB0 : Clock Speed Selection 00=3MHz; 01=4MHz; 10=8MHz; 11=12MHz SP1~SP0 : ROM/RAM reading speed 00=speed0; 01=speed1; 10=speed2; 11=speed3 ORA : Font ROM Readable 1=enable; 0=disable SRFS : Scrolling Reset for Start 1=enable; 0=disable DADR : Display RAM Order (byte) 1=reverse; 0=normal AUCM : Common Auto Scrolling 1=enable; 0=disable AUSG : Segment Auto Scrolling 1=enable; 0=disable Common or Segment Scrolling Selection 1=Segment Scrolling; 0=Common Scrolling ARI : Auto-increase Cursor Position (in reading DDRAM operation) 1=enable; 0=disable ALG : Chinese/English char alignment 1=enable; 0=disable WDI : Store Current Data to DDRAM 1=directly; 0=invertly WBC : Set Bold font (char mode only) 1=bold; 0=normal AIX : Auto-increase Cursor Position (in writing DDRAM operation) 1=enable; 0=disable CP : Cursor display control 1=on; 0=off CK : Cursor blink control 1=blinking; 0=no blinking CSD : Set cursor width 1=auto adjust, 0=fix width CR3~CR0 : Cursor Height DY3~DY0 : Line Distance
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Register Table Summary (cont')
Reg. Add 12h Reg. Name
MAMR
LCD Module User Manual
LM240128RCC
--X5 X4 X3 X2 X1 X0 --A5 A4 A3 A2 A1 A0 Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 B7 B6 B5 B4 B3 B2 B1 B0 --SS5 SS4 SS3 SS2 SS1 SS0 --C5 C4 C3 C2 C1 C0 SC7 SC6 SC5 SC4 SC3 SC2 SC1 SC0 D7 D6 D5 D4 D3 D2 D1 D0 --RS5 RS4 RS3 RS2 RS1 RS0 --DS5 DS4 DS3 DS2 DS1 DS0 RC7 RC6 RC5 RC4 RC3 RC2 RC1 RC0 CB7 CB6 CB5 CB4 CB3 CB2 CB1 CB0 CD7 CD6 CD5 CD4 CD3 CD2 CD1 CD0 BT7 BT6 BT5 BT4 BT3 BT2 BT1 BT0 0 0 0 1 1 1 0 1 CK7 CK6 CK5 CK4 CK3 CK2 CK1 CK0 --------INK INT INX INY MSK MST MSX MSY
20h 21h
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AWRR DWRR AWBR DWBR AWLR DWLR AWTR DWTR CPXR BGSG CPYR BGCM EDCM BTMR FRCA SCCR FRCB INTR
R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
GIM RM2 RM1 RM0 OP1 OP2 WM1 WM0
R/W R/W
D7 D6 D5 D4 D3 D2 D1 D0
Descriptions
GIM : Graphic Mode Cursor Auto Shifting Direction 1=Horizontal then Vertical; 0=Vertical then Horizontal RM2~RM0 : Display Layer Selection 001=page1 only; 010=page2 only; 011=combine two layer; 000=gray scale mode 110=extended mode1, 111=extended mode2 OP1~OP2 : two layer mode setting 00=OR; 01=XOR; 10=NOR; 11=AND WM1~WM0 : Layer Read/Write Selection 00=page0; 01=page1; 10=page2; 11=page1 & page2 at the same time X5~X0: Active Window Right Register A5~A0 : Display Window Right Register Y7~Y0 : Active Window Bottom Register B7~B0 : Display Window Bottom Register SS5~SS0 : Active Window Left Register C5~C0 : Display Window Left Register SC7~SC0 : Active Window Top Register D7~D0 : Display Window Top Register RS5~RS0 : Cursor Poison X Register DS5~DS0 : Segment Start Position of Scrolling Mode RC7~RC0 : Cursor Position Y Register CB7~CB0 : Common Start Position of Scrolling Mode CD7~CD0 : Common Ending Position of Scrolling Mode BT7~BT0 : Cursor Blink Time Register Frame Rate Polarity Change at Common_A Register CK7~CK0 : Shift Clock Control Register Reserved INK : Key Scan Interrupt Flag (read only) 1=detected; 0=not detected INT : Touch Panel detect (read only) 1=touched; 0=untouched INX : Cursor Column status (read only) 1=equal to INTX; 0=not equal to INTX INTY : Cursor Row status (read only) 1=equal to INTY; 0=not equal to INTY MSZ : Key Scan Interrupt output 1=enable key scan interrupt; 0=disable key scan interrupt MSA : Touch Panel interrupt output 1=enable; 0=disable MSX : INTX event interrupt output 1=enable; 0=disable MSY : INTY event interrupt output 1=enable; 0=disable
30h 31h 40h 41h 50h 51h 60h 61h 70h 71h 72h 80h 81h 90h 91h A0h
(not applicable)
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Register Table Summary (cont')
Reg. Add A1h
(not applicable)
LCD Module User Manual
LM240128RCC
Reg. Name
KSCR
(not applicable)
KC7 KC6 KC5 KC4 KC3 KC2 KC1 KC0 KR7 KR6 KR5 KR4 KR3 KR2 KR1 KR0 --IX5 IX4 IX3 IX2 IX1 IX0 IY7 IY6 IY5 IY4 IY3 IY2 IY1 IY0 TPX9 TPX8 TPX7 TPX6 TPX5 TPX4 TPX3 TPX2 TPY9 TPY8 TPY7 TPY6 TPY5 TPY4 TPY3 TPY2 TPX1 TPX0 --TPY1 TPY0 --DZEN --DAC4 DAC3 DAC2 DAC1 DAC0 FD7 FD6 FD5 FD4 FD3 FD2 FD1 FD0 FH1 FH0 FV1 FV0 1 1 1 1 TNS BNK RM1 RM0 FDA ASC ABS1 ABS0 ARDY ADET 1 1 AF1 FA0 --AZEN AZOE -SCAN AS3 AS2 AS1 AS0
A2h A3h
(not applicable)
KSDR KSER INTX INTY TPCR
R R R/W R/W R/W
KEN KSZ KDT1 KDT0 -KF2 KF1 KF0
R/W R/W
D7 D6 D5 D4 D3 D2 D1 D0
Descriptions
KEN : Key Scan Enable Bit 1=enable; 0=disable KSZ : Key Scan Matrix Selection 1=4x4; 0=8x8 KDT1~KDT0 : Key Scan Data Sampling Times 00=2xFRM; 01=4xFRM; 10=8xFRM; 11=16xFRM KF2~KF0 : Key Scan Frequency Selection 000= 2xFRM, 001=4xFRM; 010=8xFRM; 011=16xFRM 100= 32xFRM, 001=64xFRM; 010=128xFRM; 011=256xFRM KC7~KC0 : Key Scan Output KR7~KR0 : Key Scan Data Input IX5~IX0 : Interrupt Column Setup Register IY7~IY0 : Interrupt Row Setup Register AZEN : Touch Panel Function 1=enable; 0=disable AZOE : Touch Panel Data Output 1=enable; 0=disable SCAN : Touch Panel Scan 1=enable; 0=disable AS3~AS0 : Touch Panel Control Bits ARDY : ADC Data Convert State 1=convert complete; 0=convert incomplete ADET : Touch Event Indicate 1=touched; 0=untouched TPX9~TPX2 : Touch Panel Segment data D9~D2
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B0h B1h
(not applicable)
C0h
(not applicable)
C1h
(not applicable)
TPSR
R/W
C8h
(not applicable)
TPXR
R
C9h
(not applicable)
RPYR
R
TPY9~TPX2 : Touch Panel Common data D9~D2
CAh
(not applicable)
TPZR
R
TPX1~TPX0 : Touch Panel Segment data D1~D0 TPY1~TPY0 : Touch Panel Common data D1~D0 DZEN : LCD contrast control 1=disable; 0=enable DAC4~DAC0 : LCD Contrast Control Value FD7~FD0 : Pattern Data Register / Display Times of Gray Mode TNS : External Char ROM 1=enable; 0=disable BNK : ROM BANK Selection 1=Lower 256k ROM; 0=upper 256k ROM RM1~RM0 : Font ROM Translate 00=GB(256k); 01=BIG5(512k); 10=GB(512k) FDA : Fill Data to DDRAM 1=fill data to DDRAM enable; 0=no action; ASC : Font ROM range select 1=decode as ASCII; 0=auto ABS1~ABS0 : ASCII Block Selection 00=map to ASCII block 0; 01=map to ASCII block 1; 10=map to ASCII block 2; 11=map to ASCII block 3 FH1~FV0 : Font Horizontal Size 00=1x; 01=2x; 10=3x; 11=4x FV1~FV0 : Font Vertical Size 00=1x; 01=2x; 10=3x; 11=4x
D0h
(not applicable)
LCCR
R/W R/W R/W
E0h F0h
PNDR FNCR
F1h
FVHT
R/W
Note: *1. It is suggested to check the BUSY before sending the Control Data. *2. For the details, please refer to RA8803 Data sheet.
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LCD Module User Manual
LM240128RCC
4.6 Initialization Setting Example The following setting should be issue to LCD module after hardware reset. (It is a basic example only, it could be adjusted if necessary.)
Register Add 00h Register Name
WLCR
Value (binary)
1100 1101
Value (hex) CD
Note
01h 10h
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MISC WCCR
1111 0010 0010 1001
F2 29
11h 20h 21h 30h 31h 40h 41h 50h 51h 81h 90h F0h
DWLR AWRR DWRR AWBR DWBR AWLR DWLR AWTR DWTR FRCA SCCR FNCR
0001 0000 0001 1101 0001 1101 0111 1111 1000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0100 0000 0001 1111 1010 0000
10 1D 1D 7F 80 00 00 00 00 40 1F A0
Power Mode = Normal Mode Software Reset = Normal Operation Display mode = Character Mode Display on off control = normal display Full screen blinking control = normal (no blinking) Full screen inverse = normal (no inverse) CLK_OUT=enable INT and BUSY polarity = Hi Active Clock speed = 8MHz Auto-increase Cursor Position (in reading DDRAM operation) = disable Chinese/English char alignment = disable Store Current Data to DDRAM = directly Set Bold font (char mode only) = normal Auto-increase Cursor Position (in writing DDRAM operation) = enable Cursor display control = off Cursor blink control = no blinking Set cursor width = auto adjust Cursor Height = 1 Line Distance = 0 Active Window Right Register = 1D Display Window Right Register = 1D Active Window Bottom Register = 7F Display Window Bottom Register = 80 Active Window Left Register = 00 Display Window Left Register = 00 Active Window Top Register = 00 Display Window Top Register = 00 Frame Rate Polarity Change at Common_A Register Shift Clock Control Register (set to 67Hz) External Char ROM = enable ROM BANK Selection = upper 256k ROM Font ROM Translate = GB Fill Data to DDRAM = no action; Font ROM range select = auto ASCII Block Selection = map to ASCII block 0
Note: Others un-mentioned register are using its hardware reset default value.
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LCD Module User Manual
LM240128RCC
5. Design and Handling Precaution
1. 2. 3. 4. 5. 6.
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7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18.
The LCD panel is made by glass. Any mechanical shock (eg. dropping form high place) will damage the LCD module. Do not add excessive force on the surface of the display, which may cause the Display color change abnormally. The polarizer on the LCD is easily get scratched. If possible, do not remove the LCD protective film until the last step of installation. Never attempt to disassemble or rework the LCD module. Only Clean the LCD with Isopropyl Alcohol or Ethyl Alcohol. Other solvents (eg. water) may damage the LCD. When mounting the LCD module, make sure that it is free form twisting, warping and distortion. Ensure to provide enough space (with cushion) between case and LCD panel to prevent external force adding on it, or it may cause damage to the LCD or degrade the display result. Only hold the LCD module by its side. Never hold LCD module by add force on the heat seal or TAB. Never add force to component of the LCD module. It may cause invisible damage or degrade of the reliability. LCD module could be easily damaged by static electricity. Be careful to maintain an optimum anti-static work environment to protect the LCD module. When peeling off the protective film from LCD, static charge may cause abnormal display pattern. It is normal and will resume to normal in a short while. Take care and prevent get hurt by the LCD panel sharp edge. Never operate the LCD module exceed the absolute maximum ratings. Keep the signal line as short as possible to prevent noisy signal applying to LCD module. Never apply signal to the LCD module without power supply. IC chip (eg. TAB or COG) is sensitive to the light. Strong lighting environment could possibly cause malfunction. Light sealing structure casing is recommend. LCD module reliability may be reduced by temperature shock. When storing the LCD module, avoid exposure to the direct sunlight, high humidity, high temperature or low temperature. They may damage or degrade the LCD module
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