Nothing Special   »   [go: up one dir, main page]

ALM Echnology Co., LTD.: NO.: FOR Messrs.

Download as pdf or txt
Download as pdf or txt
You are on page 1of 21

PALM TECHNOLOGY CO., LTD.

The LCD(M) Specialist

CONTACT ADDRESS : 14F-15F, No.383, Yangming Rd.,Sanmin District, Kaohsiung


City 807, Taiwan, R.O.C.
Tel: 886-7-3983966
Fax: 886-7-3982966
E-mail: sales@palmtech.com.tw

PART NO. : PLC0802AW-SYL

FOR MESSRS. :

CONTENTS

NO. ITEM PAGE


1. Cover 1
2. Record Of Reversion 2
3. Features 3
4. Mechanical Specifications 3
5. Outline Dimension 4
6. Absolute Maximum Ratings 5
7. Block Diagram 5
8. Interface Pin Description 5
9. Contrast Adjust 6
10. Optical Characteristics 6
11. Electrical Characteristics 6
12. Timing Characteristics 7~8
13. Instruction Description 9
14. Display Character Address Code 12
15. Standard Character Pattern 13
16. Quality Specifications 14~21

龐誼科技
08.07.22
發行
ACCEPTED BY : PROPOSED BY :

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:1/21
RECORD OF REVISION

DATE PAGE SUMMARY

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:2/21
1.Features
1. 5x8 dots with cursor
2. Built-in controller (SPLC780D or equivalent)
3. +5.0V power supply
4. 1/16 duty cycle;1/5bias
5. BKL to be driven by pin15, pin16
6. 8characters *2lines display

†FSTN positive †FSTN Negative


LCD type
;STN Yellow Green †STN Gray †STN-Blue
View direction ;6 O’clock †12 O’clock
Rear Polarizer †Reflective ;Transflective †Transmissive
;LED †EL †Internal Power †4.2V input
Backlight Type
†CCFL †External Power ;5.0V input
Backlight Color †White †Amber † Blue ;Yellow-Green
Temperature Range †Normal ;Wide †Super Wide
DC to DC circuit †Build-in ;Not Build-in
El Driver IC †Build-in ;Not Build-in
Touch screen †With ;Without
;English-Jap †English-Eur †English-Russian †other
Font type
anese open

2. MECHANICAL SPECIFICATIONS
Module size 58.0mm(L)*32.0mm(W)* Max13.0(H)mm
Viewing area 38.0mm(L)*16.0mm(W)
Character size 2.96mm(L)*5.56 mm(W)
Character pitch 3.55mm(L)*5.92mm(W)
Weight Approx.

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:3/21
PIN ASSIGNMENT
1 VSS
2 VDD
3 V0
3.Outline dimension

4 RS
5 R/W
6 E

PALM TECHNOLOGY CO., LTD.


14 13 7~10 DB4~DB7

Tel:886-7-3983966 Fax:886-7-3982966
A 11~14 DB0~DB3
A LED-
K LED-

K
2 1

T1 T2 UNIT
WITHOUT BKL 4.0 8.0 mm
SIDE BKL

PLC0802AW-SYL-1
ARRAY BKL 8.6 13.0 mm
Feature
1. 8 Character X 2-line Character Format; 5X7 dots + 1-Cursor line.
2. The LCD uses the SPLC780D Series LCD Driver from SUNPLUS, or equivalent controller.
3. Interface With 4-bit or 8-bit MPU; 1/16 Duty cycle, 1/5 Bias.
4. Display Mode & Backlight Variations.
5. ROHS Compliant

PAGE:4/21
4.Absolute maximum ratings
Item Symbol Standard Unit
Power voltage VDD-VSS 0 - 7.0
V
Input voltage VIN VSS - VDD
Operating temperature range VOP -20 - +70

Storage temperature range VST -30 - +80
5.Block diagram

6.Interface pin description


External
Pin no. Symbol Function
connection
1 Vss Signal ground for LCM (GND)
2 VDD Power supply Power supply for logic (+5.0V) for LCM
3 V0 Contrast adjust
4 RS MPU Register select signal
5 R/W MPU Read/write select signal
6 E MPU Operation (data read/write) enable signal
Four low order bi-directional three-state data bus lines.
7~10 DB0~DB3 MPU Used for data transfer between the MPU and the LCM.
These four are not used during 4-bit operation.
Four high order bi-directional three-state data bus lines.
11~14 DB4~DB7 MPU
Used for data transfer between the MPU

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:5/21
7.Contrast adjust

VDD~V0: LCD Driving voltage


VR: 10k~20k

8.Optical characteristics
TN type display module (Ta=25℃, VDD=5.0V)
Item Symbol Condition Min. Typ. Max. Unit
Viewing angle θ -25 - -
Cr≥4 deg
Φ -30 - 30
Contrast ratio Cr - 2 - -
Response time (rise) Tr - - 120 150
ms
Response time (fall) Tr - - 120 150
STN type display module (Ta=25℃, VDD=5.0V)
Item Symbol Condition Min. Typ. Max. Unit
Viewing angle θ -60 - 35
Cr≥2 deg
Φ -40 - 40
Contrast ratio Cr - 6 - -
Response time (rise) Tr - - 150 250
ms
Response time (fall) Tr - - 150 250

9.Electrical characteristics
DC characteristics
Parameter Symbol Conditions Min. Typ. Max. Unit
Supply voltage for LCD VDD-V0 Ta =25℃ - 4.5 - V
Input voltage VDD - 5.0 -
Supply current IDD Ta=25℃, VDD=5.0V - 1.5 2.5 mA
Input leakage current ILKG - - 1.0 uA
“H” level input voltage VIH 2.2 - VDD
“L” level input voltage VIL Twice initial value or less 0 - 0.6
“H” level output voltage VOH LOH=-0.25mA 2.4 - - V
“L” level output voltage VOL LOH=1.6mA - - 0.4
Backlight supply voltage VF - 5.0
Backlight supply current ILED VF=5.0V 100 mA

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:6/21
10.Timing Characteristics
Write cycle (Ta=25℃, VDD=5.0V)
Parameter Symbol Test pin Min. Typ. Max. Unit
Enable cycle time tc 500 - -
Enable pulse width tw E 300 - -
Enable rise/fall time tr, tf - - 25
RS; R/W setup time tsu1 100 - -
RS; R/W ns
RS; R/W address hold RS; R/W
time
th1 10 - -
Read data output delay tsu2 60 - -
DB0~DB7
Read data hold time th2 10 - -

Write mode timing diagram

VIH1
VIL1

tsu1 th1

VIL1 VIL1

tw th1

VIH1 tf
VIH1
VIL1 VIL1 VIL1
tr tsu2 th2

VIH1 VIH1
VALID DATA
VIL1 VIL1

tc

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:7/21
Read cycle (Ta=25℃, VDD=5.0V)
Parameter Symbol Test pin Min. Typ. Max. Unit
Enable cycle time tc 500 - -
Enable pulse width tw E 300 - -
Enable rise/fall time tr, tf - - 25
RS; R/W setup time tsu 100 - -
RS; R/W ns
RS; R/W address hold RS; R/W
time
th 10 - -
Read data output delay td 60 - 90
DB0~DB7
Read data hold time tdh 20 - -
Read mode timing diagram

VIH1
VIL1

tsu th

VIL1
VIL1
tw th
tf
VIH1
VIH1
VIL1 VIL1 VIL1
tr
td tdh

VIH1 VIH1
VALID DATA
VIL1 VIL1

tc

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:8/21
11.Instruction description
11.1Outline
To overcome the speed difference between the internal clock of SPLC780D and the MPU clock, SPLC780D
performs internal operations by storing control in formations to IR or DR. The internal operation is determined
according to the signal from MPU, composed of read/write and data bus (Refer to Table7).
Instructions can be divided largely into four groups:
1) SPLC780D function set instructions (set display methods, set data length, etc.)
2) Address set instructions to internal RAM
3) Data transfer instructions with internal RAM
4) Others
The address of the internal RAM is automatically increased or decreased by 1.

Note: during internal operation, busy flag (DB7) is read “High”.


Busy flag check must be preceded by the next instruction.

11.2 Instruction Table


Instruction code Execution
Instruction DB DB Description time (fosc=
RS R/W DB7 DB6 DB4 DB3 DB2 DB0
5 1 270 KHZ
Write “20H” to DDRA and set
Clear
0 0 0 0 0 0 0 0 0 1 DDRAM address to “00H” from 1.53ms
Display AC
Set DDRAM address to “00H”
From AC and return cursor to
Return
0 0 0 0 0 0 0 0 1 - Its original position if shifted. 1.53ms
Home The contents of DDRAM are
not changed.
Entry mode Assign cursor moving direction
0 0 0 0 0 0 0 1 I/D SH And blinking of entire display 39us
Set
Set display (D), cursor (C), and
Display ON/
0 0 0 0 0 0 1 D C B
Blinking of cursor (B) on/off
OFF control Control bit.
Set cursor moving and display
Cursor or Shift control bit, and the
0 0 0 0 0 1 S/C R/L - - Direction, without changing of
39us
Display shift
DDRAM data.
Set interface data length (DL:
8-
Function
0 0 0 0 1 DL N F - - Bit/4-bit), numbers of display 39us
set Line (N: =2-line/1-line) and,
Display font type (F: 5x11/5x8)
Set Set CGRAM address in
CGRAM 0 0 0 1 AC5 AC4 AC3 AC2 AC1 AC0 address 39us
Counter.
Address
Set Set DDRAM address in
DDRAM 0 0 1 AC6 AC5 AC4 AC3 AC2 AC1 AC0 address 39us
Counter.
Address
Whether during internal
Read busy Operation or not can be known
Flag and 0 1 BF AC6 AC5 AC4 AC3 AC2 AC1 AC0 By reading BF. The contents of 0us
Address Address counter can also be
read.
Write data Write data into internal RAM
to 1 0 D7 D6 D5 D4 D3 D2 D1 D0 (DDRAM/CGRAM). 43us
Address
Read data Read data from internal RAM
1 1 D7 D6 D5 D4 D3 D2 D1 D0 (DDRAM/CGRAM). 43us
From RAM

NOTE:
When an MPU program with checking the busy flag (DB7) is made, it must be necessary 1/2fosc is
necessary for executing the next instruction by the falling edge of the “E” signal after the busy flag (DB7) goes
to “Low”.

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:9/21
11.3Contents
1) Clear display
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 0 0 0 0 0 1

Clear all the display data by writing “20H” (space code) to all DDRAM address, and set DDRAM address
to “00H” into AC (address counter).
Return cursor to the original status, namely, bring the cursor to the left edge on the fist line of the display.
Make the entry mode increment (I/D=“High”).

2) Return home
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 0 0 0 0 1 -
Return home is cursor return home instruction.
Set DDRAM address to “00H” into the address counter.
Return cursor to its original site and return display to its original status, if shifted.
Contents of DDRAM does not change.

3) Entry mode set


RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 0 0 0 1 I/D SH

Set the moving direction of cursor and display.

I/D: increment / decrement of DDRAM address (cursor or blink)


When I/D=“high”, cursor/blink moves to right and DDRAM address is increased by 1.
When I/D=“Low”, cursor/blink moves to left and DDRAM address is increased by 1.
*CGRAM operates the same way as DDRAM, when reading from or writing to CGRAM.
SH: shift of entire display
When DDRAM read (CGRAM read/write) operation or SH=“Low”, shifting of entire display is not performed. If
SH =“High” and DDRAM write operation, shift of entire display is performed according to I/D value. (I/D=“high”.
shift left, I/D=“Low”. Shift right).

4) Display ON/OFF control


RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 0 0 1 D C B
Control display/cursor/blink ON/OFF 1 bit register.

D: Display ON/OFF control bit


When D=“High”, entire display is turned on.
When D=“Low”, display is turned off, but display data remains in DDRAM.

C: cursor ON/OFF control bit


When D=“High”, cursor is turned on.
When D=“Low”, cursor is disappeared in current display, but I/D register preserves its data.

B: Cursor blink ON/OFF control bit


When B=“High”, cursor blink is on, which performs alternately between all the “High” data and display
characters at the cursor position.
When B=“Low”, blink is off.

5) Cursor or display shift


RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 0 1 S/C R/L - -
Shifting of right/left cursor position or display without writing or reading of display data.
This instruction is used to correct or search display data.
During 2-line mode display, cursor moves to the 2nd line after the 40th digit of the 1st line.
Note that display shift is performed simultaneously in all the lines.
When display data is shifted repeatedly, each line is shifted individually.
When display shift is performed, the contents of the address counter are not changed.

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:10/21
Shift patterns according to S/C and R/L bits

S/C R/L Operation


0 0 Shift cursor to the left, AC is decreased by 1
0 1 Shift cursor to the right, AC is increased by 1
1 0 Shift all the display to the left, cursor moves according to the display
1 1 Shift all the display to the right, cursor moves according to the display

6) Function set
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 1 DL N F - -

DL: Interface data length control bit


When DL=“High”, it means 8-bit bus mode with MPU.
When DL=“Low”, it means 4-bit bus mode with MPU. Hence, DL is a signal to select 8-bit or 4-bit bus mode.
When 4-but bus mode, it needs to transfer 4-bit data twice.

N: Display line number control bit


When N=“Low”, 1-line display mode is set.
When N=“High”, 2-line display mode is set.

F: Display line number control bit


When F=“Low”, 5x8 dots format display mode is set.
When F=“High”, 5x11 dots format display mode.

7) Set CGRAM address


RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 1 AC5 AC4 AC3 AC2 AC1 AC0

Set CGRAM address to AC.


The instruction makes CGRAM data available from MPU.

8) Set DDRAM address


RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 1 AC6 AC5 AC4 AC3 AC2 AC1 AC0

Set DDRAM address to AC.


This instruction makes DDRAM data available form MPU.
When 1-line display mode (N=LOW), DDRAM address is form “00H” to “4FH”.In 2-line display mode (N=High),
DDRAM address in the 1st line form “00H” to “27H”, and DDRAM address in the 2nd line is from “40H” to
“67H”.

9) Read busy flag & address


RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 1 BF AC6 AC5 AC4 AC3 AC2 AC1 AC0

This instruction shows whether SPLC780D is in internal operation or not.


If the resultant BF is “High”, internal operation is in progress and should wait BF is to be LOW, which by then
the nest instruction can be performed. In this instruction you can also read the value of the address counter.

10) Write data to RAM


RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
1 0 D7 D6 D5 D4 D3 D2 D1 D0

Write binary 8-bit data to DDRAM/CGRAM.


The selection of RAM from DDRAM, and CGRAM, is set by the previous address set instruction (DDRAM
address set, CGRAM address set).
RAM set instruction can also determine the AC direction to RAM.
After write operation. The address is automatically increased/decreased by 1, according to the entry mode.

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:11/21
11) Read data from RAM
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
1 1 D7 D6 D5 D4 D3 D2 D1 D0

Read binary 8-bit data from DDRAM/CGRAM.


The selection of RAM is set by the previous address set instruction. If the address set instruction of RAM
is not performed before this instruction, the data that has been read first is invalid, as the direction of AC is not
yet determined. If RAM data is read several times without RAM address instructions set before, read operation,
the correct RAM data can be obtained from the second. But the first data would be incorrect, as there is no
time margin to transfer RAM data.
In case of DDRAM read operation, cursor shift instruction plays the same role as DDRAM address set
instruction, it also transfers RAM data to output data register.
After read operation, address counter is automatically increased/decreased by 1 according to the entry
mode.
After CGRAM read operation, display shift may not be executed correctly.

NOTE: In case of RAM write operation, AC is increased/decreased by 1 as in read operation.


At this time, AC indicates next address position, but only the previous data can be read by the read
instruction.

12.Display character address code:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:12/21
13.Standard character pattern

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:13/21
14.QUALITY SPECIFICATIONS
14.1 Standard of the product appearance test
Manner of appearance test: The inspection should be performed in using 20W x 2 fluorescent lamps.
Distance between LCM and fluorescent lamps should be 100 cm or more. Distance between LCM and
inspector eyes should be 30 cm or more.

Viewing direction for inspection is 45° from vertical against LCM.

Fluorescent
Lamps

30cm min 100cm min


o o
45 45

LCM LCD

Definition of zone:

A Zone

B Zone

A Zone: Active display area (minimum viewing area).


B Zone: Non-active display area (outside viewing area).

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:14/21
14.2 Specification of quality assurance
AQL inspection standard

Sampling method: MIL-STD-105E, Level II, single sampling


Defect classification (Note: * is not including)

Classify Item Note AQL

Major Display state Short or open circuit 1 0.65

LC leakage

Flickering

No display

Wrong viewing direction

Contrast defect (dim, ghost) 2

Back-light 1,8

Non-display Flat cable or pin reverse 10

Wrong or missing component 11

Minor Display Background color deviation 2 1.0

state Black spot and dust 3

Line defect, Scratch 4

Rainbow 5

Chip 6

Pin hole 7

Protruded 12

Polarizer Bubble and foreign material 3

Soldering Poor connection 9

Wire Poor connection 10

TAB Position, Bonding strength 13

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:15/21
Note on defect classification

No. Item Criterion

1 Short or open circuit Not allow

LC leakage

Flickering

No display

Wrong viewing direction

Wrong Back-light
2 Contrast defect Refer to approval sample
Background color
deviation

3 Point defect, Point Acceptable Qty.


Y
Black spot, dust Size
(including Polarizer) X φ<0.10 Disregard
0.10<φ≤0.20 3
0.20<φ≤0.25 2
φ = (X+Y)/2 1
0.25<φ≤0.30
φ>0.30 0
Unit:mm

4 Line defect,
W
Line Acceptable Qty.
Scratch L W
L --- 0.015≥W Disregard
3.0≥L 0.03≥W
2
2.0≥L 0.05≥W
1.0≥L 0.1>W 1
--- 0.05<W Applied as point defect

Unit: mm

5 Rainbow Not more than two color changes across the viewing area.

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:16/21
No Item Criterion

6 Chip
Acceptable criterion
X
Y X Y Z
Remark:
≤2 0.5mm ≤t/2
X: Length t
direction Z

Y: Short
direction
Z: Thickness
direction
Acceptable criterion
t: Glass X Y X Y Z
thickness
≤2 0.5mm ≤t
W: Terminal
Width
Z

Acceptable criterion
X Y Z
≤3 ≤2 ≤t
Y shall not reach to ITO

Acceptable criterion
W
Y X Y Z
Disregard ≤0.2 ≤t
Z
X

Y Acceptable criterion
X Y Z
≤5 ≤2 ≤t/3

Z
X

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:17/21
No. Item Criterion

7 Segment (1) Pin hole


pattern
φ < 0.10mm is acceptable.
W = Segment width
φ = (X+Y)/2 X
X
Point Size Acceptable Qty
Y φ≤1/4W Disregard
Y 1/4W< φ≤1/2W 1
φ>1/2W 0
W Unit: mm

8 Back-light
(1) The color of backlight should correspond its
specification.
(2) Not allow flickering
9 Soldering
(1) Not allow heavy dirty and solder ball on PCB.
(The size of dirty refer to point and dust defect)
(2) Over 50% of lead should be soldered on Land.

Lead
Land

50% lead
10 Wire
(1) Copper wire should not be rusted
(2) Not allow crack on copper wire connection.
(3) Not allow reversing the position of the flat cable.
(4) Not allow exposed copper wire inside the flat cable.
11* PCB
(1) Not allow screw rust or damage.
(2) Not allow missing or wrong putting of component.

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:18/21
No Item Criterion

12 Protruded

W: Terminal Width Acceptable criteria:


W Y ≤ 0.4
Y

13 TAB
1. Position
W
W1
ITO W1≤1/3W
H H1≤1/3H
H1 TAB

2 TAB bonding strength test

TAB

P (=F/TAB bonding width) ≥650gf/cm ,(speed rate: 1mm/min)


5pcs per SOA (shipment)

14 Total no. of acceptable


A. Zone
Defect
Maximum 2 minor non-conformities per one unit.
Defect distance: each point to be separated over 10mm

B. Zone

It is acceptable when it is no trouble for quality and assembly


in customer’s end product.

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:19/21
14.3 Reliability of LCM
Reliability test condition:

Item Condition Time (hrs) Assessment

High temp. Storage 80°C 48

High temp. Operating 70°C 48


No abnormalities
Low temp. Storage -30°C 48
in functions
Low temp. Operating -20°C 48
and appearance
Humidity 40°C/ 90%RH 48

Temp. Cycle 0°C ← 25°C →50°C 10cycles


(30 min ← 5 min → 30min)

Recovery time should be 24 hours minimum. Moreover, functions, performance and appearance shall be free
from remarkable deterioration within 50,000 hours under ordinary operating and storage conditions room
temperature (20+8°C), normal humidity (below 65% RH), and in the area not exposed to direct sun light.

14.4 Precaution for using LCD/LCM


LCD/LCM is assembled and adjusted with a high degree of precision. Do not attempt to make
any alteration or modification. The followings should be noted.

General Precautions:
1. LCD panel is made of glass. Avoid excessive mechanical shock or applying strong
pressure onto the surface of display area.
2. The polarizer used on the display surface is easily scratched and damaged. Extreme care
should be taken when handling. To clean dust or dirt off the display surface, wipe gently
with cotton, or other soft material soaked with isoproply alcohol, ethyl alcohol or
trichlorotriflorothane, do not use water, ketone or aromatics and never scrub hard.
3. Do not tamper in any way with the tabs on the metal frame.
4. Do not make any modification on the PCB without consulting Palm Tech
5. When mounting a LCM, make sure that the PCB is not under any stress such as bending
or twisting. Elastomer contacts are very delicate and missing pixels could result from
slight dislocation of any of the elements.
6. Avoid pressing on the metal bezel, otherwise the elastomer connector could be deformed
and lose contact, resulting in missing pixels and also cause rainbow on the display.
7. Be careful not to touch or swallow liquid crystal that might leak from a damaged cell. Any liquid crystal
adheres to skin or clothes, wash it off immediately with soap and water.

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:20/21
Static Electricity Precautions:
1. CMOS-LSI is used for the module circuit; therefore operators should be grounded whenever
he/she comes into contact with the module.
2. Do not touch any of the conductive parts such as the LSI pads; the copper leads on the PCB and
the interface terminals with any parts of the human body.
3. Do not touch the connection terminals of the display with bare hand; it will cause disconnection or
defective insulation of terminals.
4. The modules should be kept in anti-static bags or other containers resistant to static for storage.
5. Only properly grounded soldering irons should be used.
6. If an electric screwdriver is used, it should be grounded and shielded to prevent sparks.
7. The normal static prevention measures should be observed for work clothes and working
benches.
8. Since dry air is inductive to static, a relative humidity of 50-60% is recommended.

Soldering Precautions:
1. Soldering should be performed only on the I/O terminals.
2. Use soldering irons with proper grounding and no leakage.
3. Soldering temperature: 280°C+10°C
4. Soldering time: 3 to 4 second.
5. Use eutectic solder with resin flux filling.
6. If flux is used, the LCD surface should be protected to avoid spattering flux.
7. Flux residue should be removed.

Operation Precautions:
1. The viewing angle can be adjusted by varying the LCD driving voltage Vo.
2. Since applied DC voltage causes electro-chemical reactions, which deteriorate the
display, the applied pulse waveform should be a symmetric waveform such that no DC
component remains. Be sure to use the specified operating voltage.
3. Driving voltage should be kept within specified range; excess voltage will shorten display
life.
4. Response time increases with decrease in temperature.
5. Display color may be affected at temperatures above its operational range.
6. Keep the temperature within the specified range usage and storage. Excessive temperature
and humidity could cause polarization degradation, polarizer peel-off or generate
bubbles.
7. For long-term storage over 40°C is required, the relative humidity should be kept below
60%,and avoid direct sunlight.

Limited Warranty
Palm Tech LCDs and modules are not consumer products, but may be incorporated by Pam Tech’s customers
into consumer products or components thereof, Palm Tech does not warrant that its LCDs and components are
fit for any such particular purpose.

1. The liability of Palm Tech is limited to repair or replacement on the terms set forth below. Palm Tech
will not be responsible for any subsequent or consequential events or injury or damage to any personnel
or user including third party personnel and/or user. Unless otherwise agreed in writing between Palm Tech
and the customer, Palm Tech will only replace or repair any of its LCD which is found defective electrically
or visually when inspected in accordance with Palm Tech general LCD inspection standard . (Copies
available on request)
2. No warranty can be granted if any of the precautions state in handling liquid crystal display above
has been disregarded. Broken glass, scratches on polarizer mechanical damages as well as defects that
are caused accelerated environment tests are excluded from warranty.
3. In returning the LCD/LCM, they must be properly packaged; there should be detailed description of
the failures or defect.

PALM TECHNOLOGY CO., LTD.


Tel:886-7-3983966 Fax:886-7-3982966 PLC0802AW-SYL-1 PAGE:21/21

You might also like