Liquid crystal display and its back light brightness regulating method

A technology of liquid crystal display and backlight brightness, applied in static indicators, optics, instruments, etc., can solve the problem that the display cannot automatically adjust the brightness of the backlight, and achieve visual comfort

Inactive Publication Date: 2007-06-27
INNOCOM TECH SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the defect that the liquid crystal display in the prior art cannot automatically adjust the brightness

Method used

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  • Liquid crystal display and its back light brightness regulating method
  • Liquid crystal display and its back light brightness regulating method
  • Liquid crystal display and its back light brightness regulating method

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Embodiment Construction

[0014] Please refer to FIG. 2 , which is a schematic diagram of a liquid crystal display in a preferred embodiment of the present invention. The liquid crystal display 200 includes a drive controller 210, a power supply 250, a data driver 220 connected to the drive controller 210 and the power supply 250 respectively, a scan driver 230 connected to the drive controller 210 and the power supply 250 respectively, a The brightness control circuit 231 integrated in the scan driver 230 , a liquid crystal display panel 240 , a light sensor 241 and a backlight circuit 270 connected to the power supply 250 . The light sensor 241 is arranged in the liquid crystal display panel 240, and is directly arranged on the glass substrate of the non-display area of ​​the liquid crystal display panel 240. It uses amorphous silicon as a photosensitive material to sense the light signal of external light, and will sense The light signal is sent to the brightness control circuit 231. The brightness...

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Abstract

The liquid crystal display (LCD) device includes a LCD faceplate, a light sensor for sensing light signal of external light, a brightness control circuit (BCC), and a backlight circuit. The LCD faceplate includes a non-display area. The light sensor is setup on the non-display area of the LCD faceplate. Being in use for receiving light signal from the light sensor, BCC converts brightness of the light signal to the control signal. The backlight circuit receives the control signal to adjust brightness of the backlight. Based on change of external brightness, the LCD adjusts brightness of the backlight automatically. The invention also discloses a method for adjusting brightness of the backlight of the LCD device.

Description

【Technical field】 [0001] The invention relates to a liquid crystal display and a backlight brightness adjustment method thereof. 【Background technique】 [0002] At present, liquid crystal displays have gradually replaced traditional cathode ray tube (Cathode Ray Tube, CRT) displays used in calculators, and because liquid crystal displays are light, thin, and small, they are very suitable for use in desktop computers, Laptop computers, personal digital assistants (Personal Digital Assistant, PDA), portable phones, televisions and a variety of office automation and audio-visual equipment. [0003] Please refer to FIG. 1 , which is a schematic diagram of a liquid crystal display disclosed in the prior art. The liquid crystal display 100 includes a drive controller 110, a power supply 150, a data driver 120 connected to the drive controller 110 and the power supply 150 respectively, a scan driver 130 connected to the drive controller 110 and the power supply 150 respectively ,...

Claims

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Application Information

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IPC IPC(8): G02F1/133G02F1/13357G09G3/34G02F1/1335
Inventor 符占伟蔡明宏
Owner INNOCOM TECH SHENZHEN
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