Display Panel Color Filter Layout for Low-Reflectivity Open Areas
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Solution Overview
Problem
Display products face issues with high reflectivity, which affects the picture quality and user requirements for improved display performance, particularly in regions with high light exposure.
Innovation Solution
A display panel design featuring a light-emitting layer and a color filter layer with specific thickness variations in the color-resists, where the second sub-section in the non-opening areas absorbs external light to reduce reflection, improving contrast and overall display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a uniform color filter layer is used across the display panel, then the manufacturing process is simple, but the reflectivity is high in certain regions affecting display quality
Solution Approach 1:
The color filter layer is designed with different thicknesses in different regions: a first thickness in the display region and a second thickness (greater than the first) in the non-display region. This local differentiation allows the non-display region to absorb more light and reduce reflectivity, while maintaining normal display performance in the display region.
Solution Approach 2:
The thickness parameter of the color filter layer is changed across different regions of the display panel. By adjusting the thickness parameter, the optical properties (reflectivity) of different regions are optimized - thinner in display areas for normal operation, thicker in non-display areas for reflectivity reduction.
2Object-affected harmful factors
If the color filter layer thickness is increased to reduce reflectivity, then reflectivity decreases, but the display region may be affected
Solution Approach 1:
Different thicknesses are applied to different functional regions: the display region maintains a thinner color filter layer to ensure proper light transmission and display quality, while the non-display region uses a thicker layer to reduce reflectivity. This spatial differentiation resolves the contradiction between reflectivity reduction and display quality maintenance.
3Adaptability or versatility
If optical components are added to the display panel, then functionality is enhanced, but reflectivity issues arise in those regions
Solution Approach 1:
The color filter layer thickness is specifically increased in regions containing optical components (non-display regions) to reduce reflectivity, while maintaining standard thickness in display regions. This allows optical components to be integrated without compromising overall display quality or creating unwanted reflections.
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 design effectively reduces reflectivity and enhances contrast and display quality by using thicker second sub-sections in the color-resists to absorb external light, balancing reflectivity across different regions of the display panel.
Implementation Method 1
the second sub-section is located in the non-opening area... the thickness of the first sub-section is smaller than the thickness of the second sub-section... the second sub-section absorbs external light
Data Source
AI summary
A display panel and a display device are provided. The display panel includes a display region including opening areas and a non-opening area; a substrate; and a light-emitting layer and a color filter layer. The light-emitting layer includes light-emitting elements located in the opening areas. The color filter layer includes color-resists. Along a first direction, the color-resists overlap with the light-emitting elements. One color-resist includes a first sub-section and a second sub-section. The first sub-section is located in a corresponding opening area and the second sub-section is located in the non-opening area. The color-resists include a first-type color-resist. In the first-type color-resist, along the first direction, the thickness of the first sub-section is smaller than the thickness of the second sub-section. The first direction is the thickness direction of the display panel.