Fitting method for evaluating threshold curve of black matrix and evaluation method of black matrix

A technology of threshold curve and black matrix, applied in the evaluation field of black matrix

Active Publication Date: 2019-06-21
BEIJING BOE DISPLAY TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, a variety of black matrix widths may have a visual macroscopic effect, making the dark lines appearing on the display panel

Method used

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  • Fitting method for evaluating threshold curve of black matrix and evaluation method of black matrix
  • Fitting method for evaluating threshold curve of black matrix and evaluation method of black matrix
  • Fitting method for evaluating threshold curve of black matrix and evaluation method of black matrix

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] As shown in FIG. 1 , the display panel includes a plurality of sub-pixels 10 . In order to avoid mutual interference of light emitted by the sub-pixels 10 and avoid light leakage, a black matrix is ​​arranged between any adjacent sub-pixels 10 .

[0035] example, such as Figure 1a and Figure 1b As shown, the black matrix is ​​in the shape of a grid as a whole, and the area enclosed by each small grid is the area where a sub-pixel 10 is located.

[00...

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Abstract

The embodiment of the invention provides a fitting method for evaluating a threshold curve of a black matrix and an evaluation method of the black matrix, relates to the technical field of display, and can improve the black matrix evaluation accuracy. A fitting method for evaluating a threshold curve of a black matrix comprises the following steps: obtaining a contrast sensitivity value by the widths of a plurality of shading strips extending along the length direction or the width direction of each sample and the widths of sub-pixels included in the black matrix of each sample; the shading strips have N widths, and N is greater than or equal to 2; the width of the shading strips in at least part of the samples is not completely equal to that of the shading strips in other samples; obtaining spatial frequency values corresponding to the samples under different observation distances; marking the visible or invisible condition of each sample dark line under the same ambient brightness and the corresponding observation distance in a coordinate system which takes the spatial frequency as an abscissa and takes the contrast sensitivity value as an ordinate; and fitting a threshold curve,so that the coordinate points of which the identifications are visible or invisible are respectively positioned on two sides of the threshold curve.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a fitting method for evaluating a threshold curve of a black matrix and a method for evaluating a black matrix. Background technique [0002] In order to increase the aperture ratio of the display panel, the black matrix between different sub-pixels is designed to have at least two different widths, which are repeated periodically. However, various widths of the black matrix may bring about a visual macro effect, making dark lines alternate between light and dark appear on the display panel. Therefore, in the layout design of the display panel, it is necessary to evaluate the risk of the dark line. Contents of the invention [0003] Embodiments of the present invention provide a threshold curve fitting method for evaluating a black matrix and a method for evaluating a black matrix, which can improve the accuracy of evaluating a black matrix. [0004] In order to achieve the ...

Claims

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Application Information

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IPC IPC(8): G09G3/00
Inventor 王永垚苏秋杰高玉杰朱宁缪应蒙
Owner BEIJING BOE DISPLAY TECH CO LTD
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