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LM721A Service Manual
4.4 PANEL SPECIFICATION (Hydis-200)
4.4.1 Panel Feature
-High contrast ratio, high aperture structure
-TN(Twisted Nematic) mode
-Wide viewing angle
-High speed response
-SXGA(1280 x 1024 pixels) resolution
-Low power consumption
-2 dual CCFTs(Cold Cathode Fluorescent Tube)
-DE(Data Enable) mode
-COMPACT SIZE DESIGN
4.4.2 Display Characteristics
Items
Display Area
Driver element
Display color
Number of pixels
Pixel Arrangement
Pixel pitch
Display Mode
4.4.3 Optical Characteristics
The optical characteristics are measured under stable conditions at 25
Item
Contrast Ratio
(Center of screen)
Rising
Response
Time
Falling
Luminance of White
(Center of screen)
Color
Chromaticity
(CIE 1931)
Coordinates (CIE)
Brightness Uniformity
Specification
337.92(H) x 270.336(V)
a-Si TFT active matrix
16.2M
1280 x 1024
RGB vertical stripe
0.264(H) x 0.264(W)
Normally White
Symbol
Conditions
C/R
Tr
Tf
Normal
YL
ψ=0
Rx
θ=0
Ry
Viewing
Gx
Angle
Gy
Bx
By
Wx
Wy
[%]
Page 12 of 56
mm
Colors
pixel
mm
(Room Temperature)
℃
Min.
Typ.
250
450
-
4
-
12
200
260
0.64
0.34
0.29
Typ.
0.61
-0.03
0.14
0.07
0.3
0.338
75
80
Rev: A
Unit
:
Max.
Unit
Note
-
5
msec
20
-
Cd/m2
TYP.
+0.03
-
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