DESCRIPTION
NL6448BC20-08 is a TFT(thin film transistor) active matrix color liquid crystal display(LCD) comprising amor-phous silicon TFT attached to each signal electrode, a driving circuit and a backlight. NL6448BC20-08 has a built-in backlight. Backlight includes long-life-lamps and its lamps are replaceable.
The 17cm diagonal display area contains 640 480 pixels and can display 262144 colors simultaneously NL6448BC20-08 is suitable for industrial application use, because the luminance is high, and the viewing direction is selectable by display scan select. It is a successor model of NL6448AC20-06, therefore, there are electrical and mechanical compatibility with the predecessor.
FEATURES
High luminance (300 cd/m 2 Typ.: saturated value) and Low reflection Wide viewing angle with retardation film Wide operational temperature
Display reverse scan function
6-bit digital RGB signals, Data enable function (DE)Edge type backlight with low temp./long-life-lamps Backlight lamp holder (65LHS- ) replaceable Compatible with NL6448AC20-06
APPLICATIONS
Measuring instruments
Display terminals for control system New media
Control boards for NC machine
Displays for ATM and vending machines
PRELIMINARY DATA SHEET
©17 cm (6.5 type), 640480 pixels
262144 colors, incorporated edge-light type backlight high brightness, inverter separated from module
Document No. MA981106 (3rd edition)Date Published November 1998Printed in USA
q q q q q
q q q q
q q q q q 3.3V/5.0V operation
NEC Electronics Inc., 1998
NL6448BC20-08
2STRUCTURE AND FUNCTIONS
A TFT color LCD module comprises a TFT LCD panel, LSIs for driving liquid crystal, and a backlight. The TFT LCD panel is composed of a TFT array glass substrate superimposed on a color filter glass substrate with liquid crystal filled in the narrow gap between two substrates. The backlight apparatus is located on the backside of the LCD panel.
RGB (Red, Green, Blue) data signals are sent to LCD panel drivers after modulation into suitable forms for active matrix addressing through signal processor.
Each of the liquid crystal cells acts as an electro-optical switch that controls the light transmission from the backlight by a signal applied to a signal electrode through the TFT switch.
BLOCK DIAGRAM
R0 - R5
G0 - G5
B0 - B5
CLK
Hsync
Vsync
VL
DE
MODE
VCC
VH
GND
3
NL6448BC20-08
OUTLINE OF CHARACTERISTICS (at room temperature)
Display area 132.48 (H) × 99.36 (V) mm Drive system a-Si TFT active matrix Display colors 262144 or 4096 colors Number of pixels 640 × 480
Pixel arrangement RGB vertical stripe Pixel pitch 0.207 (H) × 0.207 (V) mm
Module size 178.8(H) × 126.8(V) × 11.0 Typ. (D) mm Inverter size 26 (H) × 105 (V) × 9.5 Typ. (D) mm Weight 237g (Typ.) Contrast ratio 150 : 1 (Typ.)Viewing angle (more than the contrast ratio of 10:1)
• Horizontal : 50° (Typ. left side, right side)• Vertical : 35° (Typ. up side), 45° (Typ. down side)
Designed viewing direction
• wider viewing angle with contrast ratio : up side (12 o'clock, reverse scan)
: down side (6 o'clock, normal scan)
• wider viewing angle without image reversal : up side (12 o'clock, normal scan)压力表接头 : down side (6 o'clock, reverse scan)
• optimum grayscale (γ = 2.2) : perpendicular
Color gamut 45% (Typ. At center, To NTSC)Response time 40ms (Max.), "white" to "black"Luminance 300cd/m 2 (Typ.)
Signal system 6-bit digital signals for each of RGB primary colors,
Synchronous signals (Hsync, Vsync), Dot clock (CLK)
Supply voltage 5.0V [3.3V] (Logic, LCD driving)
Backlight Edge light type: two fluorescent lamps (cold cathode type)Power consumption 6.0W (Typ.)
NL6448BC20-08
4
Item Specifications Unit Module size178.8 ± 0.5 (H) 126.8 ± 0.5 (V) 11.5 max. (D)mm Inverter size26 ± 0.5 (H) 105.0 ± 0.5 (V) 10.0 max. (D)mm Display area132.48 (H) 99.36 (V)mm Number of pixels640 (H) 480 (V)pixel
Dot pitch0.069 (H) 0.207 (V)mm Pixel pitch0.207 (H) 0.207 (V)mm Pixel arrangement RGB (Red, Green, Blue) vertical stripe––Display colors262144 color Weight Module : 245 (max.) + inverter : 25 (max.)g
ABSOLUTE MAXIMUM RATINGS
GEMERAL SPECIFICATIONS
Parameter Symbol Ratings Unit Remarks
Supply voltage V CC–0.3 to 6.5V
Input voltage V I–0.3 to 6.5V
Storage temp.T ST–20 to 60°C––
气囊修复Operating temp.T OP0 to 60°C module surface note 1
<95% relative humidity Ta < 40°C
RH
< 85% relative humidity40 < Ta <50°C
Absolute humidity shall not exceed Ta > 50°C
Ta = 50°C, 85 % relative humidity level.
ELECTRICAL CHARACTERISTICS
(1)Logic, LCD driving
Parameter Symbol Min.Typ.Max.Unit Remarks
Supply voltage V CC 4.75 5.0 5.25V––
Logic input "L" voltage V IL0––0.8V
—
Logic input "H" voltage V IH 2.2–– 5.25V
Supply current I CC––1) 300450mA Vcc = 5.0 V
打印机芯Ta = 25°C Humidity
(no condensation)
Ta = 25°C
V I - V CC < 3.0
note 1 : measured at the display area
1) : Checker flag pattern (in EIAJ ED-2522)
(2)Backlight
Parameter Symbol Min.Typ.Max.Unit Remarks
Supply voltage V DD 4.75 5.0 5.25V––
Supply current I DD––9001000mA200 cd/m2 (typ.)
大聚合Ta = 25°C
__
__
5
NL6448B C20-08
SUPPLY VOLTAGE SEQUENCE
VCC
Signal
∗1The supply voltage for input signals should be the same as VCC.
∗2Apply VDD within the LCD operation period. When the backlight turns on before LCD operation or the LCD operation turns
off before the backlight turns off, the display may momentarily become white.
∗3When the power is off, please keep whole signals (Hsync, Vsync, CLK, DE, and DATA) low level or high impedance.
INTERFACE PIN CONNECTION
Module side connector Mating connector CN31 • • • IL-310-T31PB-VF (No. 1 to 31) IL-310-T31S-VF Supplier :Japan Aviation Electronics or
Industry Limited (JAE) DF9-31S-1V or DF9M-31S-1R
Supplier : HIROSE ELECTRIC CO., LTD
(1)6-bit interface signals, power supply
Pin No. Symbol Function 1 GND Ground 2 CLK Dot clock
3 Hsync Horizontal synchronous
4 Vsync Vertical synchronous
5 GND Ground
6 R0 Red data (LSB)
7 R1 Red data
8 R2 Red data
9 R3 Red data 10 R4 Red data 11 R5 Red data (MSB)12 GND Ground
13 G0 Green data (LSB)14 G1 Green data 15 G2 Green data 16 G3 Green data
Pin No. Symbol Function 17 G4 Green data 18 G5 Green data (MSB)19 GND Ground 20 B0 Blue data (LSB)21 B1 Blue data 22 B2 Blue data 23 B3 Blue data 24 B4 Blue data 25 B5 Blue data (MSB)26 GND Ground 27 DE Data enable 28 V CC Power supply 29 V CC Power supply
30 N.C. Non-connection (Open)31 DPS Display scan select LSB : Least Significent Bit MSB : Most Significent Bit测斜管
醇醚燃料note 1 : VCC : All VCC terminals should be connected to 5.0 V.
note 2 : DPS : Normal scan is “L”or “Open”. And reverse scan is “H”.
note 3 : During the operation, do not change the operation mode : e. g. scan direction and 4/ 4 : Do not operate LCD module without input DE signal.
豫公网安备41160202000603
站长QQ:729038198
关于我们
投诉建议