LG GT540 - Video Recording and Editing

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3. TECHNICAL BRIEF
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3.12.4.1 Touch Windows Interface
Touch screen & Two Touch buttons (menu, back) are a press sensor with an attached flexible PCB.
4-wire resistive touch pannel. Resistive touch screen use the voltage divider principle to generate voltage that
represent X and Y coordinates.
Figure. Touch window Sensor Schematic
Figure. Touch window Sensor Block Diagram
100R608
100R607
100R606
100R605
CN605
65
74
83
92
101
G1 G2
G3 G4
D606
4
3
5
2
6
1
TOUCH_Y1YD
TOUCH_X2XL
TOUCH_Y2YU
TOUCH_X1XR
Touch Screen Connector