Under-Display Camera Panel Using Dummy Sub-Pixels for Boundary Color Matching
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Solution Overview
Problem
Current solutions for integrating a front camera in electronic devices under a display panel, such as digging a groove or punching a hole, result in areas where information cannot be displayed, hindering the achievement of a high screen-to-body ratio.
Innovation Solution
A display panel design with distinct light transmittance regions allows for the integration of a photosensitive component, like a camera, under the screen while maintaining image display, using dummy sub-pixels to match the color of adjacent sub-pixels and eliminate color cast along boundaries, thereby increasing the display area and achieving a full-screen design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a groove or hole is dug/punched at the display panel position corresponding to the camera, then the camera can be integrated under the display panel, but information cannot be displayed on the grooved or punched region
Solution Approach 1:
The patent moves the camera integration from the front surface (2D plane) to the back surface of the display panel, utilizing the third dimension (depth/thickness) to resolve the conflict between camera integration and display area. This allows the front display surface to remain fully functional while the camera is positioned on the rear side.
Solution Approach 2:
The display panel is divided into different regions with different light transmittance characteristics - a first display region with higher light transmittance for camera integration and a second display region with lower light transmittance for normal display. This segmentation allows both functions to coexist without interference.
2Adaptability or versatility
If different light transmittance regions are used for camera integration, then the camera can be integrated under the screen, but color inconsistency appears at the boundaries between regions
Solution Approach 1:
The patent applies different light transmittance properties to different local regions of the display panel - the first display region has higher light transmittance to accommodate the camera, while the second display region has lower light transmittance for optimal display. This local differentiation resolves the camera integration issue without compromising overall display quality.
Solution Approach 2:
Dummy sub-pixels are introduced as intermediary elements at the boundary between the first and second display regions. These dummy sub-pixels have the same color as the second sub-pixels and serve as a visual buffer to eliminate the color cast effect, ensuring seamless color transition across the boundary.
3Manufacturing precision
If dummy sub-pixels are added to match boundary colors, then color cast is eliminated, but the pixel unit structure becomes more complex
Solution Approach 1:
The dummy sub-pixels are designed as non-functional cosmetic elements that serve only the visual purpose of matching boundary colors. They do not contribute to the actual display function but are essential for aesthetic consistency, similar to using decorative elements that don't affect the core functionality.
Data Source
AI summary
A display panel and a display device. The first display region of the display panel includes a first boundary on a side of the display panel, the second display region includes a second boundary on the same side and is connected with the first boundary, and the display panel includes a first pixel unit which is located in the first display region and includes a plurality of first sub-pixels of different colors. A second pixel unit which is located in the second display region and includes a plurality of second sub-pixels of different colors, and dummy sub-pixels which are located in the first display region and between the first pixel unit and the first boundary. A color of the dummy sub-pixels is the same as that of the second sub-pixels in the second pixel unit adjacent to the second boundary.