Akai LCT-4216, Service Manual

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Product Specification
4
LC420W02
Liquid Crystal Display
Ver. 1.1 August.12, 2004
1. General Description
The LC420W02 is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent
Lamp(CCFL) backlight system. The matrix employs a-Si Thin Film Transistor as the active element.
It is a transmissive type display operating in the normally black mode. It has a 42.0 inch diagonally measured
active display area with WXGA resolution (768 vertical by 1366 horizontal pixel array).
Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical stripes.
Gray scale or the luminance of the sub-pixel color is determined with a 8-bit gray scale signal for each dot,
thus presenting a palette of more than 16.7M(true) colors.
It has been designed to apply the 8-bit 1-port LVDS interface.
It is intended to support LCD TV, PCTV where high brightness, super wide viewing angle, high color gamut,
high color depth and fast response time are important.
CN1
(30pin)
LVDS 5pair
Select
Source Driver Circuit
TFT - LCD Panel
(1366
×
RGB
×
768 pixels)
G1
S1 S1366
G768
Back light Assembly (20CCFL)
10CNs (High)
RGB
Timing Controller
(LVDS Rx integrated
)
G
at
e Driv
er Cir
cuit
10CNs (High)
Inverter
(CN2,CN3)
+24.0V (2X)
GND (2X)
SDRAM
EEPROM
(LUT)
Power Circuit
Block
SDA
SCL
MEM
CTRL
RGB
#9
+12.0V
Enable #10
V
BR_EXT
#27 V
BR_OUT
#28
V
BR
for AI(2X)
General Features
1000:1 (Typ.) Dynamic C/R (for AI)
Viewing Angle Free ( R/L 176 (Typ.), U/D 176 (Typ)) Viewing Angle (CR>10)
8-bit, 16.7 M colors Color Depth
1366 horiz. by 768 vert. Pixels RGB stripe arrangement Pixel Format
500 cd/m 2 (Center 1-point) (Typ.) Luminance, White
Total 172W (Typ.) (Logic=5.4W, Inverter=165.6W [Lamp current=6.0mA] ) Power Consumption
11,000g (Typ.) Weight
Transmissive mode, normally black Display Operating Mode
Hard coating(3H), Anti-glare treatment of the front polarizer Surface Treatment
0.227mm x 0.681mm x RGB Pixel Pitch
1006 mm(H) x 610 mm(V) x 59 mm(D) (Typ.) Outline Dimension
42.02 inches(1067.308mm) diagonal Active Screen Size