JVC GC-QX3U, Service Manual

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1.4.4 LCD (ACX301AK)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
COM
H Level shifter & Shift register
V shift register
COM
Electrode
V Level shifter
Negative
Voltage
Occurence
Circuit
LC Cs
TESTL
COM
VST
VCK
EN
DWN
VVDD
VSS
HVDD
VSSQ
TEST2
WIDE
HST REF
TEST
Cext/Rext
HCK2 HCK1
PSIG
GREEN
RED
BLUE
RT
G
TESTR
Pin Descriptions
Pin No. Pin Name Description
1 TESTL Panel testing terminal (Should be opened.)
2 COM Common electrode voltage input terminal for panel
3 VST Start pulse input terminal for V shift register drive
4 VCK Clock input terminal for V shift register drive
5 EN Enable signal input terminal for gate select pulse
6 DWN Drive direction signal input terminal for V shift register
7 VV
DD
Power for V driver
8 V
SS
GND for H and V drivers
9 HV
DD
Power for H driver
10 VSSG Negative voltage setting terminal for V driver
11 TEST2 Connected to GND through a 1-Mohm resistor in the panel
12 WIDE Pulse input terminal for 16:9 mode
13 HST Start pulse input terminal for H shift register drive
14 REF Level shifter circuit reference voltage input terminal
15 TEST Panel testing terminal (Should be opened.)
16 Cext/Rext Power input terminal for setting H shift register drive time
constant
17 HCK2 Clock input terminal for H shift register drive
18 HCK1 Clock input terminal for H shift register drive
19 PSIG Uniformity improving signal input terminal
20 GREEN Video signal (G) input terminal for the panel
21 RED Video signal (R) input terminal for the panel
22 BLUE Video signal (B) input terminal for the panel
23 RGT Drive direction signal input terminal for H shift register
24 TESTR Panel testing terminal (Should be opened.)
Features
• Device Structure
- Active matrix panel with internal driver using low-
temperature polysilicon transistors
- Pixels
Total dots: 896 (H) x 230 (V) =206,080
Display dots: 880 (H) x 228 (V) =200,640 (2.0 in.)
• Total dots: 200,000 dots 5.1cm diagonal (2.0 in.)
• Horizontal resolution: 440 TV scanning lines
• Light permeability: 5.6% (standard)
• Smooth screen image with RGB delta array
• NTSC/PAL compatible
• High image quality internal circuitry
• 16:9 screen display function
• Low-reflection screen display processing assures easy
viewing even outdoors
• Anti-grime display
Delta array
B G R B R G
R B G R G B
R B G R G B
B G R B R G
R B G R G B
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