Display Panel Light-Shielding Structure for Lower Reflectivity
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Solution Overview
Problem
Conventional display panels have high reflectivity due to structural design defects, which affects the display effect by not effectively controlling light-emitting elements like OLEDs, mini LEDs, and micro LEDs.
Innovation Solution
A display panel design featuring a light-shielding layer with a first and second shielding structure, where the second shielding structure is thinner than the first and located within the first opening, reducing reflectivity by shielding regions between and around light-emitting elements, and providing driving signals through a driving substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional light-shielding structure is used, then the manufacturing process is simple, but the reflectivity is high which affects display effect
Solution Approach 1:
The light-shielding layer is divided into a first shielding structure and a second shielding structure with different thicknesses. The first shielding structure has a greater thickness for general light shielding, while the second shielding structure has a smaller thickness in the light-emitting region to reduce reflectivity. This segmentation allows different regions to have optimized light-shielding properties.
Solution Approach 2:
Different regions of the light-shielding layer are given different thicknesses according to their functional requirements. The first shielding structure provides strong light shielding in non-light-emitting regions, while the second shielding structure provides reduced reflectivity in the light-emitting region. This local quality differentiation resolves the contradiction between light shielding effectiveness and reflectivity control.
2Ease of manufacture
If the light-shielding layer has uniform thickness, then the manufacturing process is simple, but it cannot effectively control light in different regions
Solution Approach 1:
The light-shielding layer is segmented into first and second shielding structures with different thicknesses. The first shielding structure corresponds to non-light-emitting regions and has greater thickness, while the second shielding structure corresponds to light-emitting regions and has smaller thickness. This segmentation enables precise light control in different regions while maintaining manufacturing feasibility.
Solution Approach 2:
The patent implements local quality by making the light-shielding layer have different thicknesses in different regions. The first shielding structure provides strong light shielding where needed, while the second shielding structure allows better light emission control in light-emitting regions. This local differentiation achieves precise light control without requiring complete uniformity throughout the entire layer.
3Device complexity
If the second shielding structure has the same thickness as the first, then the structure is simple, but the reflectivity cannot be reduced effectively
Solution Approach 1:
The light-shielding layer is segmented into first and second shielding structures with deliberately different thicknesses. The first shielding structure has greater thickness for robust light shielding, while the second shielding structure has smaller thickness to reduce reflectivity in light-emitting regions. This segmentation is essential for resolving the contradiction between structural simplicity and reflectivity control.
Solution Approach 2:
The patent applies local quality by making the second shielding structure thinner than the first shielding structure in the light-emitting region. This local thickness differentiation is precisely what enables effective reflectivity reduction while maintaining overall structural integrity and functionality.
Data Source
AI summary
A display panel, a manufacturing method therefor and a display device are provided. The display panel includes: a driving substrate; a light-shielding layer, located on a side of the driving substrate, where the light-shielding layer includes a first shielding structure and a second shielding structure, the first shielding structure includes a first opening, the second shielding structure is located in the first opening, and a thickness of the second shielding structure is less than that of the first shielding structure in a first direction, where the first direction is vertical to a plane where the driving substrate is located and points to a light-emergent surface of the display panel; and multiple pixel units, where the pixel unit includes multiple light-emitting elements located in the first opening, and the driving substrate provides driving signals for the light-emitting elements.