Display panel and its box thickness test method, display device

Abstract

The present invention provides a display panel, its box thickness testing method, and a display device. The display panel includes: a first substrate and a second substrate facing each other, and the first substrate includes a light-shielding layer arranged on one side of the substrate. , the light-shielding layer includes a light-shielding layer in the display area and a light-shielding layer in the peripheral area, the light-shielding layer in the peripheral area includes: a plurality of opening areas arranged at intervals, each opening area is provided with a light-transmitting layer; The optical layer corresponds to the light-transmitting area on the second substrate. The present invention can measure the cell gap distribution in the shaded area of ​​the light-shielding layer in the peripheral area through the provided light-transmitting layer, thereby effectively judging the distribution trend of the cell thickness in the peripheral area, so as to achieve the purpose of uniform cell thickness in the peripheral area through design changes.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display panel, a method for testing the thickness of a box thereof, and a display device. Background technique [0002] The thin film transistor-liquid crystal display (TFT-LCD) substrate mainly includes a color film substrate and an array substrate. LCD inside the box. Such as figure 1 , figure 2 As shown, the basic structure of the CF substrate can be divided into a display area 103 and a peripheral area 102, wherein the black matrix (Black Matrix, BM for short) in the display area is a matrix type, located in a filter (such as figure 2 Between the shown first optical filter 104, the second optical filter 105 and the third optical filter 106), it is used to block the light leakage within the range of metal lines on the array substrate; the light shielding layer 102 (ie black matrix BM) is a large tile type, because this area does not need light transmission, so it is s...

AI Technical Summary

Problems solved by technology

However, the existing technology can only measure the Cell Gap of the display area, and there is no effective way to analyze the surrounding area

In this way, it is impossible to achieve the goal of uniform thickness of the peripheral box through targeted adjustments to the peripheral design, and then solve the problem of poor peripheral display

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