Display Panel Light Shielding Layers for Sawteeth Mitigation
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Solution Overview
Problem
Display screens with round corners suffer from sawteeth and bright dark dots due to sub-pixel arrangement and light shielding issues, where existing solutions either reduce brightness or increase sub-pixel distance, leading to noticeable defects.
Innovation Solution
A display panel design with a first light shielding layer and a second light shielding layer, where the first openings in the periphery region are smaller than in the middle region, and the second openings maintain consistent size, controlling light emission and sub-pixel distance to mitigate sawteeth and dark dots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If the openings of the black matrixes at four corners are designed to be relatively small to reduce brightness, then the sawteeth at the four corners are weakened, but the distance among the sub-pixels increases causing noticeable dark dots
Solution Approach 1:
The patent applies local quality by differentiating the opening sizes of black matrixes in different regions. Specifically, black matrixes in the periphery display region have smaller opening areas than those in the middle display region. This localized variation in opening size allows corner regions to have reduced brightness (weakening sawteeth) while maintaining proper sub-pixel spacing, as the opening area is adjusted locally rather than uniformly across the entire display.
2Illumination intensity
If the openings of the black matrixes are made smaller to reduce light transmittance, then the brightness of four corners is reduced, but the dark dots caused by black matrixes become more noticeable
Solution Approach 1:
The patent implements local quality by creating different opening areas for black matrixes in different display regions. The periphery display region (including corners) uses black matrixes with smaller opening areas to reduce brightness and eliminate sawteeth, while the middle display region uses black matrixes with larger opening areas to maintain sufficient light transmittance and avoid noticeable dark dots. This spatially differentiated approach allows each region to have optimized characteristics for its specific function.
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
This design effectively reduces sawteeth at the corners while maintaining consistent sub-pixel distance, avoiding the phenomenon of bright dark dots and ensuring uniform brightness across the display panel.
Implementation Method 1
a first light shielding layer in the display region and a second light shielding layer in the display region. The first light shielding layer includes a plurality of first openings, and the second light shielding layer includes a plurality of second openings
Data Source
AI summary
The present disclosure is related to a display panel. The display panel may include a first light shielding layer (101) in a display region and a second light shielding layer (212) opposite the first light shielding layer (101) in the display region. The first light shielding layer (101) may include a plurality of first openings (112), and the second light shielding layer (212) may include a plurality of second openings (222). The display region may include a middle display region (20A) and a periphery display region (20B). An area of each of the plurality of the first openings (112) in the periphery display region (20B) may be smaller than an area of each of the plurality of the first openings (112) in the middle display region (20A).