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Flash backlight device and its operation method

A technology of a backlight device and an operation method, applied in optics, nonlinear optics, instruments, etc., can solve the problems of screen flicker and low average brightness.

Inactive Publication Date: 2009-07-15
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the average brightness produced by the flashing backlight will be lower than that of the fixed backlight. Therefore, when displaying still images with the flashing backlight, the display result will be darker than that of the fixed backlight, and the screen will flicker. Feel

Method used

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  • Flash backlight device and its operation method
  • Flash backlight device and its operation method
  • Flash backlight device and its operation method

Examples

Experimental program
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Embodiment Construction

[0038] Please refer to figure 1 , is a circuit block diagram of a flashing backlight device according to a preferred embodiment of the present invention, and its features include enabling the flashing backlight when a moving image is detected, and disabling the flashing when a static image is detected Backlight.

[0039] In this embodiment, the blinking backlight device 100 includes a light source brightness balancing module 110 , a blinking control module 120 and a storage unit 130 .

[0040] In this embodiment, the flicker control module 120 includes a data latch 122 and an image inspection unit 124. The data latch 122 is coupled to the storage unit 130 and the image inspection unit 124, and receives data supplied by a data source. Wherein, the data latch 122 receives the data frame from the data source, outputs it, and copies a copy to the storage unit 130 for storage. The image inspection unit 124 performs an operation on the received Nth data frame and the (N-1)th data ...

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PUM

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Abstract

The invention discloses a flashing backlight device and its operation method. The flashing backlight device includes a light source brightness balance module, a flashing control module and a storage unit. In the present invention, the image inspection unit in the flicker control module is used to compare the current data frame with the last data frame read from the storage unit, and when it is judged that the picture is played as a dynamic image, the flicker is enabled Backlight, and when it is judged that the screen is played as a static image, the flashing backlight is disabled. In the present invention, the brightness balance module of the light source is used to control the brightness and the duty cycle of the cold cathode fluorescent lamp when playing dynamic images and static images on the screen.

Description

technical field [0001] The present invention relates to a backlight device, and in particular to a blinking backlight device and its operating method, which can determine whether to enable it according to the current state of the device (static or dynamic), and can adjust brightness in a timely manner. Background technique [0002] Liquid crystal (Liquid Crystal Display, referred to as LCD) is a substance between crystals and liquids. When subjected to external stimuli such as electric fields, the arrangement of liquid crystal molecules will be changed by voltage, and it constitutes a display component. [0003] Liquid crystal materials were first discovered in 1888 by the Austrian botanist F.Rinitzer from the compound of benzoic acid and acetic acid in cholesterol. Its application began around 1963, but it was not until Japan's Sharp Corporation successfully developed a liquid crystal display for calculators. Only then has the commercialization value of liquid crystal disp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357G09G3/36G02F1/1335
Inventor 杨智翔黎焕欣
Owner AU OPTRONICS CORP