Variable Thickness Light-Blocking Structures for Display Brightness Uniformity
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Solution Overview
Problem
Current display technologies, particularly OLED devices, suffer from uneven display brightness due to varying viewing angles, affecting the visual quality of display products.
Innovation Solution
The implementation of light-blocking structures with varying thicknesses or heights adjacent to light-emitting devices in different display regions to balance brightness differences caused by different viewing angles, achieved by using a combination of light-blocking structures and color filter units in the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light-blocking structures with varying thicknesses are implemented to balance brightness differences, then display uniformity is improved, but device complexity increases
Solution Approach 1:
The patent implements light-blocking structures with different thicknesses at different locations within the same display region. Specifically, the light-blocking structure has a first thickness in a first area and a second thickness in a second area, where the thicknesses differ. This local variation in thickness allows differential light blocking to compensate for viewing angle effects, thereby improving display uniformity without requiring complete structural redesign
Solution Approach 2:
The light-blocking structure is divided into multiple segments with different thicknesses corresponding to different display regions. The structure is segmented into a first area and a second area, each with optimized thickness to address specific viewing angle requirements in different regions of the display panel
2Illumination intensity
If light-blocking structures with varying thicknesses are implemented to balance brightness differences, then brightness uniformity is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent changes the thickness parameter of the light-blocking structure in different areas to optimize brightness uniformity. By adjusting the thickness parameter from a uniform value to varied values (first thickness and second thickness), the patent compensates for viewing angle effects and achieves improved brightness uniformity across different display regions
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 solution effectively reduces brightness differences across different viewing angles, enhancing the visual uniformity and overall display quality by adjusting the light-blocking ability of the structures based on their positions and configurations.
Implementation Method 1
The light-blocking structures are located on a side of the light-emitting device layer away from the substrate. Each of the light-blocking structures includes a first light-blocking structure and a second light-blocking structure.
Data Source
AI summary
A display panel and a display apparatus are provided. A display region of the display panel includes a first display region and a second display region located between the first display region and the non-display region. The light-emitting device layer includes light-emitting devices which includes a first light-emitting device and a second light-emitting device. Light-blocking structures are located on a side of the light-emitting device layer away from the substrate and include a first light-blocking structure and a second light-blocking structure. The first light-blocking structure is adjacent to the first light-emitting device, and the second light-blocking structure is adjacent to the second light-emitting device. The first light-blocking structure has a greater thickness or height than the second light-blocking structure. The present disclosure can balance the brightness difference caused by different viewing angles at different display regions, improving visually uneven brightness and visual effect.