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Planar displaying device and brightness correcting method thereof

A flat-panel display, brightness correction technology, used in static indicators, cathode ray tube indicators, instruments, etc., can solve the problems of display panel brightness differences and reduce display efficiency, etc.

Inactive Publication Date: 2008-01-23
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of this, the purpose of the present invention is to solve the problem of brightness difference between display panels of the same batch of production lines without reducing the display efficiency

Method used

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  • Planar displaying device and brightness correcting method thereof
  • Planar displaying device and brightness correcting method thereof
  • Planar displaying device and brightness correcting method thereof

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Embodiment Construction

[0024] Due to manufacturing errors and different hardware characteristics, the same batch of display panels shipped out of the factory must undergo procedures such as gamma correction, white balance, and color temperature compensation before leaving the factory. As a result, as shown in LCD1 to LCD7 in Fig. In a certain state, such as displaying the same completely white image, the brightness emitted by each display panel is inconsistent. The method of the present invention to solve this problem is mainly, if the measured LCD7 is the one with the lower brightness in the whole batch of display panels and meets the specifications, then the brightness value of LCD7 is used as the benchmark, and the brightness of all the display panels is adjusted to this benchmark.

[0025] FIG. 2 is a schematic diagram of the structure of a flat panel display according to one embodiment of the present invention. The timing controller 104 , display panel 106 , row controller 108 and column contro...

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Abstract

A system for calibrating brightness for flat panel display uses a converter to control brightness and colour temperature of each grey scale for generating a picture and provides a backlight generator to let display panel display brightness-corrected picture. The method can solve problem of brightness difference of display produced in the same batch of production.

Description

technical field [0001] The invention relates to image correction and backlight brightness control technology of flat panel displays. Background technique [0002] Figure 1 shows the existing display panel driver architecture. After the digital signal 102 is received by the timing controller 104 , it is converted into an image signal and a control signal, and input to the row controller 108 and the column controller 110 , where the image is displayed on the display panel 106 after being synchronously controlled by scanning lines. The timing controller 104 is an application-specific integrated circuit (ASIC) used as the control heart of the display panel 106 , and the rectifier 112 is used to generate high voltage to make the backlight of the display panel 106 emit light. The backlight source (not shown in the figure) is the light source installed on the back of the display panel 106, usually by fluorescent tubes (hot cathode tubes or cold cathode tubes) or other planar light...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/133G09G3/36G09G3/34G09G3/20G09G5/10
Inventor 和家璞蔡宗光
Owner AU OPTRONICS CORP