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3. TECHNICAL BRIEF
LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3.12.4 Touch Interface
In GT810h, 4-wire touch screen panel is used for user input method. Two resistive layers make up a 4-
wire touch screen panel and are separated by insulating dots. The inside surface of each layer is
coated with a transparent metal oxide coating that generates a gradient across each layer when
voltage is applied.
Table. MSM7200 Touch screen connections
Table. Recommeded operation conditions
Figure. Touch screen circuit
TOUCH SCREEN CONNECTOR
100ohm
R528
100ohm
R527
100ohm
R529
CN501
1
2
3
4
1
2
34
5
6
D503
VSMF05LCC
R530
100ohm
TOUCH_Y1YD
TOUCH_X2XL
TOUCH_Y2YU
TOUCH_X1XR
Содержание GT810h
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