Display Panel Light-Shielding Layout for Cleaner Etching
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Solution Overview
Problem
The incomplete etching of the black light-shielding layer during manufacturing affects the display effect of display panels, leading to production yield issues and increased maintenance costs due to contamination of the ashing chamber.
Innovation Solution
A display panel design where the first light-shielding layer is not in direct contact with the light-emitting element, with a defined distance (H0>0) and includes opening portions that overlap the light-emitting element, allowing for easier removal and reduced impact on the element's performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the black light-shielding layer is used to cover the metal structure, then the reflectivity of the screen is reduced and display quality is improved, but the light-shielding layer suffers from incomplete etching during manufacturing
Solution Approach 1:
The light-shielding layer is divided into a first light-shielding layer and a second light-shielding layer. The first light-shielding layer is positioned away from the light-emitting element with a distance H0>0, while the second light-shielding layer is positioned close to the light-emitting element. This segmentation allows different etching processes to be applied to different regions, improving overall etching completeness while maintaining manufacturing feasibility.
Solution Approach 2:
The first light-shielding layer acts as an intermediary structure between the metal circuit layer and the second light-shielding layer. By positioning it at a distance from the light-emitting element, it facilitates the etching process and reduces contamination risk, while still maintaining the light-shielding function through the combined structure with the second light-shielding layer.
2Object-affected harmful factors
If the light-shielding layer is placed close to the light-emitting element, then the light-shielding effect is enhanced, but the removal of the light-shielding layer becomes difficult and contamination risk increases
Solution Approach 1:
The light-shielding function is segmented between two layers: the first light-shielding layer positioned away from the light-emitting element (distance H0>0) that is easy to remove, and the second light-shielding layer positioned close to the light-emitting element that provides the primary light-shielding effect. This segmentation resolves the contradiction between removal ease and light-shielding effectiveness.
Solution Approach 2:
The first light-shielding layer is extracted from direct contact with the light-emitting element by positioning it at a distance H0>0. This extracted position makes it easy to remove through etching without contaminating the light-emitting element, while the second light-shielding layer remains in position to provide the necessary light-shielding effect.
3Object-affected harmful factors
If the light-shielding layer is in direct contact with the light-emitting element, then the light-shielding effect is maximized, but the display effect is degraded due to residue and contamination
Solution Approach 1:
The light-shielding function is segmented into two layers with different positions. The first light-shielding layer is segmented away from the light-emitting element to prevent contamination, while the second light-shielding layer is segmented close to the light-emitting element to prevent light leakage. This segmentation resolves the contradiction between light-shielding effectiveness and display quality.
Solution Approach 2:
The first light-shielding layer serves as an intermediary that facilitates the etching process and prevents contamination of the light-emitting element. The second light-shielding layer acts as the primary intermediary between the light-emitting element and the external environment, blocking light leakage while maintaining display quality.
Data Source
AI summary
Provided are a display panel and a display apparatus. The display panel includes a substrate, a driving array layer provided at a side of the substrate, a light-emitting element provided at a side of the driving array layer away from the substrate and a first light-shielding layer provided at a side of the light-emitting element away from the substrate. A distance between a surface of the first light-shielding layer on a side close to the light-emitting element and a surface of the light-emitting element on a side away from the substrate is set to be greater than 0. That is, the first light-shielding layer is not in direct contact with the light-emitting element, which facilitates removing corresponding first light-shielding layer above the light-emitting element, reducing the influence of the first light-shielding layer on the light-emitting element, and improving the display effect of the display panel.