LG KS20 - Page 54

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3. TECHNICAL BRIEF
LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3.11.4. Touch Interface
In KS20, 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 1.8] MSM7200 Touch screen connections
[Table 1.9] Recommeded operation conditions
[Figure1.23] Touch screen circuit
TOUCH SCREEN CONNECTOR
PRSB6.8CD104 PRSB6.8CD106
D105 PRSB6.8C D103 PRSB6.8C
6
CN101
G1
G2
1
2
3
4
5
04-6298-006-000-883
ENQY0008602
TOUCH_X1XR
TOUCH_Y1YD
TOUCH_X2XL
TOUCH_Y2YU