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Flash backlight device and its operation method

A technology of backlight device and operation method, applied in optics, nonlinear optics, instruments, etc., capable of solving problems such as screen flickering and low average brightness

Inactive Publication Date: 2005-01-05
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

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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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Abstract

The invention discloses a flash back light device and the operation method, the device includes a light source intensity balancing model, flash control model and storing unit. In the invention, compares the current data frame and the previous data frame read from the image testing unit in the flash control model, when knows that the image playing is dynamic image through judgment, namely enables the flash back light source, when the image playing is static image, disables the flash back light source. In the invention, uses the light source intensity balancing model to control the intensity of the cold negative electrode fluorescence lamp in process playing dynamic image and static image.

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 Applications(China)
IPC IPC(8): G02F1/1335G02F1/13357
Inventor 杨智翔黎焕欣
Owner AU OPTRONICS CORP
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