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PREPARED
BY :
DATE
I
SPEC No. LD - 8706 FILE No. ISSUE : August 28 . 1995 DISPLAY GROUP PAGE : 6 pages APPLICABLE GROUP Liquid Crystal Display Group
-1
1 SHARP
LIQUID CRYSTAL
I
SHARP CORPORATION
SPECIFICATION
DEVICE
SPECIFICATION
FOR
BACKLIGHT
MODEL No.
UNIT /
LQOB152
0
CUSTOMER'S
APPROVAL
DATE
PRESENTED BY H.FUKUOKA Department General Manager Engineering Department 2 TFT Development Center TENRI LIQUID CRYSTAL DISPLAY GROUP SHARP CORPORATION
SHARP
(1) Subject LQOB 152 : Literature on backlight unit for 35cm( 13.8") TFI'-LCD
LD8706-
1
module.
> These specification sheets are the proprietary product of SHARP CORPORATION (SHARP) and include materials protected under copyright of SHARP. Do not reproduce or cause any third party to reproduce them in any form or by any means, electronic or mechanical, for any purpose, in whole or in part, without the express written permission of SHARP. > The device listed in these specification in OA equipment. sheets was designed and manufactured for use
> In case of using the device for applications such as control and safety equipment for transportation (aircraft, trains, automobiles, etc. ), rescue and security equipment and various safety related equipment which require higher reliability and safety, take into consideration that appropriate measures such as fail-safe functions and redundant system design should be taken. > Do not use the device for equipment that requires an extreme level of reliability, such as aerospace applications, telecommunication equipment(trunk lines), nuclear power control equipment and medical or other equipment for life support. > SHARP assumes no responsibility for any damage resulting from the use of the device which does not comply with the instructions and the precautions specified in these specification sheets. Contact and consult with a SHARP sales representative for any questions about this device. (2) Introduction This backlight unit is a service part for 35cm TFT-LCD whose backlight is designed to be replaceable.
module (LQ14XOl)
(3) Construction and Outline The unit is composed of cold cathode fluorescent tubes, rubber cushions, I/O wires (including connectors), and lamp holders. * Outline drawing of backlight unit : See Fig. 1.
SHARI=
(4) Input / Output terminals 4-l) I/O terminal order Pm No. Symbol i/o i 1 VHIGH 2 NC i 3 VLOW 4-2) I/O connector 1) Installed socket housing : BHR-03VS-1 2) Applicable connector housing: SM02(8.O)B-BHS-1 ( produced by Japan Solderless Terminal ) (5) Electrical characteristics Table 2 Table 1 Description Power supply for lamp (High voltage side) No connection Power supply for lamp (Low voltage side)
LD8706- 2
Ta=25"C
[Note 1) Available current range considering light-adjustment. [Note 2) Calculated value for reference (IL X VL) [Note 31 Lamp life terminates when the luminance under the rated power reached 50% of the initial value after the continuous operation under rated power and the room temperature. (6) Optical characteristics Ta=25"C Table 3 Remarks Symbol MIN. TYP. MAX. Unit Parameter Luminance YL 26,000 cd/m2 (just for reference) [Note 31 Chromaticity X 0.261 0.291 0.321 Y 0.241 0.271 0.301 [Note 31 The measurement shall be executed 15-20 minutes after lighting attracted power. The value measured at the center of the cold cathode fluorescent tube at a viewing cone 0.1 ' by TOPCON luminance meter BM-7.
SHARP
(7) Environmental condition 0 c1+50 "C 7- 1) Operating temperature range -25 - +60 "C 7-2) Storage temperature range
LD8706-
3
(8) Procedure to exchange backlight unit Fig. 2 shows the procedure to exchange backlight unit. Please follow the below instructions to exchange the backlight unit for TFT-LCD module . * When handling the module , please be careful not to scratch on the LCD panel surface or not to make it dirty. 8- 1) Work this exchange putting the module( 1) rear side on the top and locate the inverter portion at the worker side. Disconnect 2 connectors between the lamp(A) and the inverter(B). Please be careful not to pull out the lead wire. 8-2) The latch for the holder can be loosened by pulling out and slightly twisting the holders. The twist direction is clockwise for the right side holder (bottom side) and counterclockwise for the left side holder (top side). Please draw the lamp holder slowly and not to pull out the lead wire. 8-3) Insert the new lamp holder(2) into the backlight slot slowly and fix the holder latching to the hooking portion. Please be careful not to put foreign articles into the holder. 84)Connect 2 connectors between the lamp and the inverter. (9) Packing form Packing form is shown in Fig. 3. (10) Others If any problem occurs in relation to the description in the present specifications or other relevant items, it shail be eliminated in all sincerity through discussion.
SHARP
LD8706- 4
.n 1 .n 3
Pin NO. 1 2 3
Symbol
VHIGH
NC V LOW
Color Blue White
Fig. 1. Outline drawing of backligft unit
SHARI=
LD8706- 5
IName
pYI
A B
connectors between the lamp connectors between the inverter
2 2
Fig. 2. Procedure to exchange backlight unit
. SHARI=
LD8706- 6
352 Part unit No. 1 Lamp Holder X 2 2 Bumper 3 Inner Carton 4 Outer Carton 20 unit in eich carton Weight (g) : !~OO g Q'ty 20set 20 20 1
360
TYPE
LQOB 152
20
I OUANTITY I
1 LOT(DATE) (
Fig. 3. Packing form

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