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PRELIMINARY DATA SHEET
TFT COLOR LCD MODULE
NL6448CC33-30
26 cm (10.4 inches), 640 ´ 480 pixels, 262,144 colors, Backlight-less Wide temperature range
DESCRIPTION
NL6448CC33-30 is a TFT(Thin Film Transistor) active matrix color liquid crystal display (LCD) comprising amorphous silicon TFT attached to each signal electrode and a driving circuit. The 26 cm (10.4 inches) diagonal display area contains 640 ´ simultaneously. NL6448CC33-30 is a backlight-less model. Therefore, it is easy for customers to make own backlight and to get necessary brightness. 480 pixels and can display 262,144 colors
FEATURES
• Backlight-less • High contrast, wide viewing angle and wide color gamut • Smooth polarizer surface • 6-bit digital RGB interface • Data enable (DE) function • Variable gamma control • Reverse scan capability • Wide temperature range
APPLICATIONS
• Display terminals for control system • Monitors for process controller • Industrial PC
The information in this document is subject to change without notice.
Document No. MA990224 (Version 2) Date Published February 1999 P Printed in USA
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© NEC Electronics Inc,1999
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NL6448CC33-30
STRUCTURE AND FUNCTIONS
A color TFT (thin film transistor) LCD module is comprised of a TFT liquid crystal panel structure, LSIs for driving the TFT array, and a backlight assembly. The TFT panel structure is created by sandwiching liquid crystal material in the narrow gap between a TFT array glass substrate and a color filter glass substrate. RGB (red, green, blue) data signals from a source system is modulated into a form suitable for active matrix addressing by the onboard signal processor and sent to the driver LSIs which in turn addresses the individual TFT cells. Acting as an electro-optical switch, each TFT cell regulates light transmission from a backlight assembly when activated by the data source. By regulating the amount of light passing through the array of red, green, and blue dots, color images are created with clarity.
BLOCK DIAGRAM
H-driver
480 lines
V-driver
R0–R5 G0–G5 B0–B5 CLK Hsync Vsync DE MODE HRV VRV
Digital signal processor
Level shift
1920 lines TFT LCD panel H : 640 ´ 3 (R, G, B) V : 480
LCD timing controller
VCC g 1 g 2
Power supply circuit
LSls Drivers
OUTLINE OF CHARACTERISTICS (at room temperature)
Display area Drive system Display colors Number of pixels Pixel arrangement Pixel pitch Module size Weight Contrast ratio Color gamut Response time Transmittance Signal system Supply voltages Backlight Power consumption 211.2 (H) ´ 158.4 (V) mm a-Si TFT active matrix 262,144 colors 640 ´ 480 pixels RGB vertical stripe 0.33 (H) ´ 0.33 (V) mm 264.0 (H) ´ 187.8 (V) ´ 8.8 TYP. (D) mm 300 g (TYP.) 150 : 1 (TYP.) 43% (TYP., center, to NTSC) 15 ms (TYP.), white to black 6.3% (TYP.) Note 6-bit digital signals for each of RGB primary colors, synchronous signals (Hsync, Vsync), dot clock (CLK) 3.3 V [5.0 V] Backlight-less 1.0 W (TYP. at 3.3V)
Note: Measuring light conditions Lamp Chromaticity coordinates Luminance
Cold Cathode Fluorescent Lamp x=0.320, y=0.325 typical 1500cd/m 2
2
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NL6448CC33-30
GENERAL SPECIFICATIONS
Item Module size Display area Number of dots Number of pixels Dot pitch Pixel pitch Pixel arrangement Display colors Weight Specification 264.0 ± 0.5 (H) ´ 187.8 ± 0.5 (V) ´ 8.8 . (D)TYP. 211.2 (H) ´ 158.4 (V) 640 ´ 3 (H) ´ 480 (V) 640 (H) ´ 480 (V) 0.11 (H) ´ 0.33 (V) 0.33 (H) ´ 0.33 (V) RGB (Red, Green, Blue) vertical stripe 262,144 Module: 330 (MAX.) Unit mm mm dot pixel mm mm – color g
ABSOLUTE MAXIMUM RATINGS
Parameter Supply voltage Input voltage Storage temp. Operating temp. Symbol VCC VI TST TOP1
Top2
Rating –0.3 to 6.5 –0.3 to 6.5 –30 to 85 -25 to 85 -10 to 70 £ 95% relative humidity
Unit V V °C °C °C – – – Ta = 25°C VI – VCC < 3.0 Note 4 Non-destructive
Remarks
Note 4
Screen image should be recognized. Note 2 Ta £ 40°C 4 0 < T a £ 5 0°C Ta > 50°C
Humidity
RH
£ 85% relative humidity £ (Ta = 50°C, 85% relative humidity) Absolute humidity. < 20,000 < 20,000 3 k Max
Incident light intensity Environment light intensity Gamma resistor
II – R
cd/m2 lx
W
at CF side, Ta = 25°C Notes 1, 4 at TFT side, Ta = 25°C Notes 1, 5, 6 Should not be used by "Open"
Notes 1. 2. 3. 4.
Measured at the center of display area (Front side) Guarantee the optical characteristics at 25 degree C only. No condensation In case of that the module is exposed at high temperature in operation or storage, the polarizer film may peel off from the panel in the edge of the display area. It is recommended not to use the module under such environment continuously. It is estimated that the polarizer may peel off after the operation at 85 degree C with 120 hours in accumulation. 5. Incident light (Backlight) should be located from CF(Color Filter) side only. 6. Avoid to use the module in the environment which the strong light exposes the module surface directl.