Correction data generation method, correction data generation system, and image quality adjustment technique using correction data generation method and correction data generation system

A data generation and image quality technology, which is applied in the testing of TV system components, color TV components, machine/structural components, etc., can solve problems such as uneven brightness and uneven color, and achieve suppression of increase, Effect of suppressing takt time and suppressing the influence of light shot noise

Inactive Publication Date: 2015-11-25
IIX
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] It is well known that in display panels such as liquid crystal panels and organic EL, unevenness in luminance and / or unevenness in color may occur due to manufacturing variations such as unevenness in the cell gap (CellGap) and / or unevenness in brightness of the backlight. uneven display of
In the case where each pixel of the display panel has an RGB display unit, there is no difference in the relative luminance relationship of RGB of each pixel, but when there is a difference in absolute luminance between adjacent pixels, luminance unevenness will occur. When the relative brightness relationship of RGB is different between adjacent pixels, color unevenness will occur

Method used

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  • Correction data generation method, correction data generation system, and image quality adjustment technique using correction data generation method and correction data generation system
  • Correction data generation method, correction data generation system, and image quality adjustment technique using correction data generation method and correction data generation system
  • Correction data generation method, correction data generation system, and image quality adjustment technique using correction data generation method and correction data generation system

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Embodiment approach 1

[0058] figure 1 The correction data generation system according to this embodiment is shown. This correction data generating system 1 displays a test pattern on a liquid crystal panel 2 and takes a picture with a monochrome fixed imaging device camera 3 to generate correction data for reducing display unevenness of the liquid crystal panel 2 . The generated correction data is stored in the ROM (non-volatile memory) 5 of the image quality adjustment circuit 4 , and the image quality adjustment circuit 4 is mounted on the liquid crystal panel 2 to manufacture the image quality adjustment type liquid crystal panel 6 . In the image quality adjustment type liquid crystal panel 6, the image quality adjustment circuit 4 corrects the image signal (input signal) input to the liquid crystal panel 2 while referring to the correction data stored in the ROM 5, so that the display unevenness of the liquid crystal panel 2 can be reduced. Adjust the picture quality.

[0059] The correction ...

Embodiment approach 2

[0074] This embodiment shows another method of generating correction data by the correction data generating system 1 .

[0075] Such as Figure 4 As shown, first, the control unit 10 instructs the test pattern generating device 8 to transmit an 8-bit test pattern display signal (RGB signal) to the liquid crystal panel 2 to display a white test pattern on the liquid crystal panel 2 (step 71). This white test pattern is a pattern in which all the pixels of the liquid crystal panel 2 appear white (may appear to be gray depending on the luminance) by RGB light emission. Therefore, in step 71, grayscale values ​​are displayed on the entire screen of the liquid crystal panel 2. 32 for a white image (Grayimage).

[0076] Next, the control unit 10 captures the liquid crystal panel 2 displaying the white test pattern six times with the camera 3 (step 72), and stores each captured image in the captured image storage unit 11 (step 73).

[0077] Next, the control unit 10 changes the gra...

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Abstract

Provided is a correction data generation method that can generate highly accurate correction data while suppressing the influence of photon shot noise. According to the correction data generation method of the present invention, test patterns are displayed on a liquid crystal panel (2) in units of specific gradation values, the displayed test patterns are captured by a camera (3) a plurality of times for each specific gradation value, and a summed image is generated for each specific gradation value by summing a plurality of captured images of the test patterns. Based on the summed image for each specific gradation value, correction data is generated for reducing unevenness in display of the liquid crystal panel (2) through correction of a signal input to the liquid crystal panel (2).

Description

technical field [0001] The present invention relates to a correction data generation method and a correction data generation system for generating correction data for reducing display unevenness (Display Unevenness) by correcting an input signal of a display panel by photographing a display panel with a camera, and image quality adjustment using them technology. Background technique [0002] It is well known that in display panels such as liquid crystal panels and organic EL, unevenness in luminance and / or unevenness in color may occur due to manufacturing variations such as unevenness in the cell gap (CellGap) and / or unevenness in brightness of the backlight. The display is uneven. In the case where each pixel of the display panel has an RGB display unit, there is no difference in the relative luminance relationship of RGB of each pixel, but when there is a difference in absolute luminance between adjacent pixels, luminance unevenness will occur. When the relative brightn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/66G01M11/00G02F1/133G09G3/20G09G5/00
CPCG09G3/2003G09G3/3611G09G2320/0233G09G2320/0693G09G2360/145
Inventor 村濑浩井本真義
Owner IIX
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