Display panel and cell gap test method thereof and display device

Abstract

The invention provides a display panel and a cell gap test method thereof and a display device. The display panel comprises a first substrate and a second substrate, and the first substrate and the second substrate are in opposite arrangement. The first substrate comprises a light shielding layer on one side of an underlayer, and the light shielding layer comprises a light shielding layer in a display area and a light shielding layer in a peripheral area. The light shielding layer in the peripheral area comprises a plurality of open areas arranged at intervals, each open area is internally provided with a light permeable layer, and the light permeable layers are in correspondence to light permeable areas of the second substrate. Cell gap distribution of areas shielded by the light shielding layer in the peripheral area can be determined by arrangement of the light permeable layers, and accordingly a cell gap distribution trend of the peripheral area can be judged effectively to realize cell gap uniformity of the peripheral area by means of design alterations.

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

Images