Display Panel Light-Shielding Layout for Uniform Light Extraction
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Solution Overview
Problem
The use of light-shielding materials to reduce reflection by metal routing lines in display panels affects the light extraction efficiency of micro-light-emitting elements due to residual material on the light-emitting surface, leading to decreased contrast and user viewing experience.
Innovation Solution
A display panel design with a light-shielding layer positioned to create a greater distance between the light-emitting surface and the light-shielding portion for one color of light-emitting element, reducing the likelihood of residual light-shielding material on that surface, thereby enhancing light extraction efficiency and display uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If light-shielding materials are used to block metal routing lines, then light reflection is reduced, but light extraction efficiency of light-emitting elements deteriorates due to residual material on the light-emitting surface
Solution Approach 1:
The patent introduces a height dimension difference between different colored light-emitting elements. Specifically, the first light-emitting element has a first height, while the second light-emitting element has a second height that is greater than the first height. This height difference creates a dimensional separation that allows the light-shielding layer to be positioned at different heights relative to different elements, enabling effective light reflection reduction without residual material affecting the light extraction efficiency of either element type.
2Object-affected harmful factors
If light-shielding materials are used to block metal routing lines, then light reflection is reduced, but display uniformity deteriorates due to brightness differences between different colored light-emitting elements
Solution Approach 1:
The patent introduces a height dimension difference between different colored light-emitting elements. Specifically, the first light-emitting element has a first height, while the second light-emitting element has a second height that is greater than the first height. This height difference creates a dimensional separation that allows the light-shielding layer to be positioned at different heights relative to different elements, enabling effective light reflection reduction without residual material affecting the light extraction efficiency of either element type.
Solution Approach 2:
The patent applies different structural configurations to different colored light-emitting elements. The first light-emitting element is configured with a first structure including a first light-shielding portion, while the second light-emitting element is configured with a second structure including a second light-shielding portion. This local differentiation allows each element type to have optimized light-shielding characteristics tailored to its specific requirements, maintaining display uniformity while reducing light reflection.
3Object-affected harmful factors
If light-shielding layer is positioned close to light-emitting elements, then light reflection is reduced, but residual material on light-emitting surface increases affecting light extraction efficiency
Solution Approach 1:
The patent introduces a height dimension difference between different colored light-emitting elements. Specifically, the first light-emitting element has a first height, while the second light-emitting element has a second height that is greater than the first height. This height difference creates a dimensional separation that allows the light-shielding layer to be positioned at different heights relative to different elements, enabling effective light reflection reduction without residual material affecting the light extraction efficiency of either element type.
Solution Approach 2:
The patent pre-configures the light-shielding portions at specific heights before the light-emitting elements are fully assembled. The first light-shielding portion is positioned at a height corresponding to the first light-emitting element, and the second light-shielding portion is positioned at a height corresponding to the second light-emitting element. This preliminary positioning ensures that when light-shielding materials are applied, they naturally settle at the correct heights, preventing residual material from contaminating the light-emitting surfaces and maintaining high light extraction efficiency.
Data Source
AI summary
The present application provides a display panel and a display apparatus. The embodiments of the present application provide a display panel, where the display panel includes an array substrate, a light-emitting element, and a light-shielding layer. The light-emitting element is located on one side of the array substrate and is electrically connected to the array substrate. A plurality of light-emitting elements include a first light-emitting element and a second light-emitting element with different colors. The first light-emitting element has a first light-emitting surface facing away from the array substrate, and the second light-emitting element has a second light-emitting surface facing away from the array substrate. The light-shielding layer is arranged on one side of the array substrate.