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Method of boosting a display image, controller unit for performing the method, and display apparatus having the controller unit

A technology to enhance display and image, applied in static indicators, cathode ray tube indicators, optics, etc., to solve the problems of increased brightness and decreased display quality

Inactive Publication Date: 2010-01-27
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, when the brightness of a first region of an image is increased using a local enhancement method, the brightness of a peripheral second region adjacent to the first region may be undesirably increased due to light diffusion.
That is, the increased light tends to diffuse to the peripheral second area, so that the display quality may decrease

Method used

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  • Method of boosting a display image, controller unit for performing the method, and display apparatus having the controller unit
  • Method of boosting a display image, controller unit for performing the method, and display apparatus having the controller unit
  • Method of boosting a display image, controller unit for performing the method, and display apparatus having the controller unit

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Embodiment Construction

[0046] The present disclosure is described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. However, this disclosure should not be construed as limited to the exemplary embodiments set forth herein. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity.

[0047] It will be understood that when an element or layer is referred to as being "on," "connected to," or "coupled to" another element or layer, it can be directly on the other element or layer. directly connected or bonded to another element or layer, or intervening elements or layers may be present. In contrast, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element or layer, there are no intervening elements or layers present. Like reference numerals generally refer to like elements throughout. As used herein, the term "and / or" includes any and all co...

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PUM

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Abstract

Controller unit includes local dimming logic board and controller board. Local dimming logic board generates local dimming signals in response to image data received from external device. When boost-worthy portion of image data is found to satisfy predefined boosting conditions, local dimming logic board increases luminance value of backlight dimming signal supplied for corresponding boost-worthy area portion of image data. Controller board receives image data from local dimming logic board, and gamma converts peripheral area data corresponding to peripheral area of image data into converted image data using compensating gamma conversion different than that used for image data of backlight boosted area so that luminance of peripheral area adjacent to boosting area is decreased by use of compensating gamma conversion in place of normal or reference gamma conversion. Decreased luminance substantially counter compensates for increased luminance due to light from spreading into peripheral area from adjacent boosted area.

Description

technical field [0001] Exemplary embodiments relate to a method of enhancing a displayed image, a control unit performing the method, and a display device having the control unit. More particularly, exemplary embodiments relate to a method of enhancing a portion of a displayed image, a control unit performing the method, and a display device having the control unit. Background technique [0002] Typically, a flat panel display (eg, liquid crystal display (LCD)) includes a backlight assembly as a white light source and transmittance control, eg, an LCD panel disposed in front selectively controls transmittance based on color and / or pixel position, thereby displaying desired Image. [0003] A typical LCD panel includes: an array substrate with a plurality of pixel electrodes and thin film transistors (TFTs) electrically connected to the pixel electrodes; a color filter substrate with a common electrode and a plurality of color filters; an LC layer disposed between the array s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20G09G3/36G09G5/10
CPCG09G3/3426G09G2320/0233G09G2320/0238G09G2320/0673G09G2320/0276G09G2320/0646G09G3/3648G09G3/2055G09G3/36G02F1/133G09G3/20
Inventor 朴世起吕东珉金基哲宋时准金重铉
Owner SAMSUNG DISPLAY CO LTD