Display Substrate with Gradient Light Shielding for Irregular Edges
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Solution Overview
Problem
Display substrates with non-linear edges suffer from a saw-toothed vision effect due to uneven subpixel arrangements, which detracts from display quality and user experience, especially when integrating components like earpieces or cameras.
Innovation Solution
A display substrate with a black matrix featuring light shielding bars and blocks in a matrix form, where the vision weakening area near irregular edges has light shielding blocks that gradually increase in area, reducing brightness and minimizing the saw-toothed effect by uniform transmittance across subpixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the edge of the display area is made non-linear to meet diversified edge shape requirements, then the adaptability of the display substrate is improved, but a saw-toothed vision effect occurs due to uneven subpixel arrangements
Solution Approach 1:
The patent applies local quality by differentiating the treatment of subpixels based on their position. Subpixels in the vision weakening area (near irregular edges) are assigned different light shielding block areas compared to subpixels in the normal display area. This local differentiation allows the irregular edge shape to be maintained while compensating for the visual artifact only where needed, thus resolving the contradiction between edge shape adaptability and visual quality.
Solution Approach 2:
The patent changes the parameter of light shielding block area dynamically based on subpixel position. In the vision weakening area, the light shielding block area is adjusted according to a gradient distribution law, creating a smooth transition zone. This parameter change approach allows the display substrate to maintain diversified edge shapes while minimizing the saw-toothed vision effect through controlled brightness variations.
2Object-affected harmful factors
If light shielding blocks are added to subpixels in the vision weakening area, then the saw-toothed vision effect is reduced, but the manufacturing complexity increases
Solution Approach 1:
The patent segments the display area into two distinct regions: a normal display area with standard subpixel structures and a vision weakening area with modified subpixels containing light shielding blocks. This segmentation allows the complex light shielding block structure to be applied only where necessary (near irregular edges) rather than throughout the entire display, thus reducing the overall manufacturing complexity while still effectively mitigating the saw-toothed vision effect.
3Stability of the object's composition
If the area of light shielding blocks in weakening sub-areas gradually increases toward the irregular edge, then the brightness uniformity is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent employs preliminary action by pre-establishing a gradient distribution law for light shielding block areas before actual manufacturing. The law specifies that in the vision weakening area, light shielding block areas follow a predetermined gradient pattern that smoothly transitions from the normal display area toward the irregular edge. This pre-planned gradient distribution simplifies the manufacturing process by providing clear design guidelines, thereby reducing the actual precision requirements during fabrication while still achieving good brightness uniformity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces the brightness and visibility of irregular edges, enhancing display quality and allowing for the integration of components by minimizing the saw-toothed vision effect and optimizing the design for diverse edge shapes.
Implementation Method 1
in the vision weakening area, the black matrix further includes a light shielding block located in the subpixel and the light shielding block occupies a part of area of the subpixel
Data Source
AI summary
The embodiments of the present disclosure provide a display substrate and a display device, which relate to the field of display technologies, to solve the problem that a saw-toothed display effect occurs at an edge of an AA area when displaying if the edge of the AA area is non-linear. The display substrate includes a black matrix. The display substrate is provided with a display area, and at least a part of an edge of the display area has an irregular edge having a concave-convex shape. The display area has a plurality of subpixels arranged in a matrix form, and has a vision weakening area close to the irregular edge. In the vision weakening area, the black matrix includes a light shielding block located in the subpixel.