Black matrix, preparation method therefor, and system thereof, display substrate, and display device

• Main Authors: Niu, Zong, Cui, Shikun, Cao, Zhenyang, Yang, Fang
• Format: Patent
• Language: English
• Published: 02.02.2021
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

A black matrix, a preparation method therefor, and a system thereof, a display substrate, and a display device are provided. The preparation method includes: forming a black matrix thin film on a substrate; on one side, away from the substrate, of the black matrix thin film, carrying out first exposure processing on the black matrix thin film; on one side, close to the substrate, of the black matrix thin film, carrying out second exposure processing on the black matrix thin film; and developing the black matrix thin film after the first exposure processing and the second exposure processing to form the black matrix.