PREPARED BY : DATE
-1
I
1 SHARP
LIQUID CRYSTAL DISPLAY GROUP
SHARP CORPORATION
I
SPECIFICATION
DEVICE SPECIFICATION FOR
BACKLIGHT UNIT
MODEL No.
SPEC No. LD - 8706
FILE No.
ISSUE : August 28 . 1995
PAGE : 6 pages
APPLICABLE GROUP
Liquid Crystal Display
Group
0 CUSTOMER’S APPROVAL
DATE
BY
LQOB152
PRESENTED
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 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 sheets was designed and manufactured for use
in OA equipment.
> 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
LD8706- 1
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 module (LQ14XOl)
whose backlight is designed to be replaceable.
(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
Table 1
Pm No. Symbol i/o Description
LD8706- 2
1
2
3
4-2) I/O connector
1) Installed socket housing : BHR-03VS-1
2) Applicable connector housing: SM02(8.O)B-BHS-1
(5) Electrical characteristics
VHIGH
NC
VLOW
i Power supply for lamp (High voltage side)
- No connection
i Power supply for lamp (Low voltage side)
( produced by Japan Solderless Terminal )
Table 2
Ta=25”C
[Note 1) Available current range considering light-adjustment.
[Note 2) Calculated value for reference
[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
Table 3
Parameter
Luminance
Chromaticity X 0.261 0.291 0.321
[Note 31 The measurement shall be executed 15-20 minutes after lighting
Symbol MIN. TYP. MAX. Unit
YL
Y 0.241 0.271 0.301
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.
26,000 cd/m2 (just for reference)
(IL X VL)
Remarks
[Note 31
Ta=25”C