Display device and method for correcting uneven brightness of display device

A display device, a technology for uneven brightness, applied in static indicators, instruments, etc., can solve the problems of uneven characteristics of polysilicon, uneven stripes, etc.

Inactive Publication Date: 2012-12-19
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For example, in the manufacturing process of small high-definition liquid crystal panels, when amorphous silicon (amorphous silicon) is deposited on a glass substrate, and the low-mobility amorphous silicon is crystallized by laser irradiation to form high-mobility polysilicon ( poly-silicon), if the intensity distribution of the laser is uneven, the characteristics of the polysilicon will be uneven along the scanning direction of the laser, resulting in the above-mentioned stripe unevenness
In addition, various parasitic capacitances exist in the display device, and the capacitance value of these parasitic capacitances varies according to the deviation of these lines such as each signal line, which causes the above-mentioned stripe unevenness.

Method used

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  • Display device and method for correcting uneven brightness of display device
  • Display device and method for correcting uneven brightness of display device
  • Display device and method for correcting uneven brightness of display device

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Embodiment approach 1

[0123] One embodiment of the present invention will be described below. In this embodiment, the correction of stripe-shaped unevenness (striped brightness unevenness) that appears on the display device parallel to the extending direction of the source lines (data lines, data signal lines) is taken as an example. Note that this display device is, for example, a transmissive liquid crystal display device that displays based on image data expressing RGB colors with 6 bits, which is included in a mobile device such as a cellular phone. However, the applicable objects of the present invention are not limited thereto.

[0124] figure 2 It is a block diagram showing the configuration of the correction data creating device 10 of this embodiment. As shown in the figure, correction data generation device 10 includes display data generation unit 11 , imaging unit 12 , brightness data extraction unit 13 , moving average processing unit 14 , brightness unevenness detection unit 15 , and...

Embodiment approach 2

[0198] Next, other embodiments of the present invention will be described. For the sake of convenience, components having the same functions as those described in Embodiment 1 are given the same reference numerals, and description thereof will be omitted.

[0199] In Embodiment 1, the configuration for correcting streak unevenness was described. In this embodiment, an example of a configuration for correcting localized unevenness (spotty unevenness) will be described.

[0200] Figure 11 It is a block diagram showing the configuration of the correction data creating device 10b of this embodiment. As shown in the figure, instead of the moving average processing unit 14, brightness unevenness detecting unit 15, and corrected data generating unit 16 of the correction data creating device in Embodiment 1, the corrected data creating device 10b includes a moving averaging processing unit 14b, The brightness unevenness detection part 15b and the correction data generation part 16...

Embodiment approach 3

[0240] Next, other embodiments of the present invention will be described. For the sake of convenience, components having the same functions as those described in the above-mentioned embodiments are given the same reference numerals, and descriptions thereof are omitted.

[0241] In this embodiment, the explanation will be given mainly on the connection between the source lines ( An example of correcting striped uneven brightness (striped uneven brightness) and localized spot-like uneven brightness (spotted uneven brightness) in which the extending directions of data lines and data signal lines are parallel. That is, in the present embodiment, it is described that a plurality of parallel gate lines (scanning signal lines) and a plurality of parallel source lines intersect each other and each intersection of the gate lines and the source lines is described. An example of correcting the striped uneven brightness parallel to the source lines and the local spot uneven brightness ...

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Abstract

The invention relates to a display device and a method for correcting uneven brightness of display device. A part of pixels contained in a correction area containing uneven-brightness areas, or uneven-brightness area and peripheral areas are selected as adjusting and correcting pixels, and grayscale value correction amount of the adjusting and correcting pixels is enabled to be different from that of the pixels except the adjusting and correcting pixels in the correction areas. Therefore, the method can exactly correct brightness unevenness of the display device.

Description

[0001] This application is a divisional application of the invention titled display device, calibration system, making device, determining device and method thereof, with the filing date of August 5, 2010 and the application number of 201010247405.7. technical field [0002] The present invention relates to a technique for correcting brightness unevenness of a display screen of a display device. Background technique [0003] In image display devices such as liquid crystal display devices, plasma displays, and organic EL (Electro-Luminescence: electroluminescence) displays, due to various factors in the manufacturing process, the display brightness on the display screen may locally become darker than the desired brightness. Or bright brightness uneven. [0004] There are several types of brightness unevenness depending on their shape, and typical ones are stripe unevenness in which unevenness in brightness occurs in stripes on a display screen and spot unevenness in which une...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G09G3/20G09G3/3208
Inventor 吉冈史善太田佳似矢追善史足立浩一郎片冈耕太郎市川雄二佐藤克彦岩田浩
Owner SHARP KK
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