Doc. # 1-0003018 | |||
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Date Updated | 10-22-2007 | Date Created | 07-27-2000 |
Document Type | Knowledge Base | Related OS | |
Related Product |
What kind ENABKL of function is it? | |||
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Solution:
There are more information about the LCD control signal, for your reference.
SHFCLK----shift clock or data clock.
pixel clock for flat panel data.The signal name on TFT
LCD panel side could be
NCLK,CLK,CK,CX, or DCLK.
FLM----first line mark or vertical sync.
Flat panel equivalent of VSYNC. The signal name on TFT LCD panel
side is Vsync.
LP----latch pulse or horizontal sync.
Flat panel equivalent of HSYNC. The signal name on TFT LCD panel
sideis Hsync.
M----M signal as display enable or display timing.
The signal name on TFT LCD panel side could be ENAB,DE or DTMG.
ENABKL----Enable backlight.
Backlight is the light source of LCD panel and usually
integrated in LCD.An LCD
backlight inverter is required to drive backlight. Most
inverter need +12V as power
supply. An example of TFT LCD inverter input connector
is as follows:
Pin numberFunction pin1:Vin pin2:GND pin3:On/Off control
pin4:VR pin5:GND
Note: Vin is connected +12V power supply. On/Off control needs to be
connected to
ENABKL to control backlight ON/OFF. VR is the brightness
control input. User can
connect a potentiometer between VR and GND to control
brightness of backlight, or
short VR to GND for maximum brightness. The value of
potentiometer can be
selected according to the control sensitivity that user
needs. The recommended value
is from 1 ~ 5 kohm.
The output signal of inverter is high voltage AC source.
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