Display Panel Luminance Gradient for Camera Under Panel
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Solution Overview
Problem
In vehicle electronic systems, display apparatuses with Camera Under Panel (CUP) technology face challenges in achieving a good overall black effect due to luminance differences between regions, particularly when the instrument panel displays in a black state.
Innovation Solution
The display apparatus is designed with a display panel having distinct regions (first display region, second display region, and an opening region) that sequentially decrease in luminance value when in a black state, with specific ratios of luminance differences set between 0.001 to 0.1 to minimize observable luminance differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the camera assembly is hidden under the display panel using CUP technology, then the camera can be concealed without affecting display function, but the CUP region has lower luminance than surrounding regions causing poor overall black effect
Solution Approach 1:
The patent applies local quality by creating distinct luminance zones: a first display region with higher luminance, a second display region with intermediate luminance, and an opening region with lower luminance. This gradient distribution masks the camera assembly under the display panel while maintaining overall visual uniformity, resolving the contradiction between camera concealment and luminance uniformity.
Solution Approach 2:
The display panel is segmented into multiple regions with different luminance characteristics. By dividing the display area into first and second display regions with controlled luminance differences, the patent achieves gradual transition that hides the camera assembly while preserving display quality.
2Illumination intensity
If the display panel has distinct luminance zones to mask the camera assembly, then the overall black effect is improved, but the luminance difference between adjacent regions creates visible boundaries
Solution Approach 1:
The patent implements dynamic luminance control where the display panel can adjust luminance values of different regions based on operating conditions. This allows the system to optimize the balance between masking the camera assembly and maintaining smooth luminance transitions, preventing visible boundaries while preserving the overall black effect.
Solution Approach 2:
By controlling the luminance parameters of different display regions within specific ranges, the patent achieves optimal masking effect. The luminance values are carefully adjusted to create sufficient contrast for camera concealment while maintaining smooth transitions that prevent visible boundaries between regions.
Data Source
AI summary
A display apparatus includes a display panel having a first display region, a second display region and an opening region. The first display region is adjacent to the second display region, and the second display region is adjacent to the opening region. The second display region includes at least a first sub-region and a second sub-region, the second sub-region surrounds the opening region, and the first sub-region is disposed on a side of the second sub-region away from the opening region. An aperture ratio of the first display region is greater than an aperture ratio of the first sub-region, an aperture ratio of the first sub-region is greater than an aperture ratio of the second sub-region.