Display Substrate With Variable Pixel Density for Front Element Integration
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Solution Overview
Problem
The arrangement of front-facing elements such as cameras and sensors in display devices hinders the improvement of the screen-to-panel ratio in all-screen panels.
Innovation Solution
A display substrate design with varying pixel densities and sub-pixel arrangements in different sub-areas, allowing for a higher pixel density in one area for display and lower pixel density in another for accommodating functional elements, while maintaining high screen-to-panel ratio and minimizing visual brightness differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If functional elements (front camera, earphone, fingerprint recognition area, physical button) are arranged on the front face of the display device, then these functions can be provided, but the screen-to-panel ratio is reduced
Solution Approach 1:
The patent extracts the front camera from the traditional front-facing position and relocates it to the notched area at the top of the display. This extraction allows the camera to be integrated without occupying additional front panel space, thereby maintaining a high screen-to-panel ratio while still providing the front camera function.
Solution Approach 2:
The patent utilizes the notched area at the top of the display as an alternative spatial dimension for placing functional elements. Instead of arranging components horizontally across the front face, the solution moves to the vertical dimension by creating a notch at the top edge, effectively using unused space to accommodate the front camera and other elements.
2Measurement precision
If pixel density is increased in the first display sub-area for high-quality display, then display quality is improved, but the distance between adjacent pixels decreases making manufacturing more difficult
Solution Approach 1:
The patent applies different pixel densities to different display sub-areas based on their specific requirements. The first display sub-area uses high pixel density for high-quality display content, while the second display sub-area uses lower pixel density for functional elements like the front camera. This local differentiation allows high display quality where needed without uniformly increasing manufacturing complexity across the entire display.
Solution Approach 2:
The patent implements a dynamic pixel structure where the density and arrangement of pixels can vary across different regions of the display. This dynamic approach allows the display to optimize pixel distribution, placing higher density pixels in areas requiring superior visual quality and lower density pixels in areas where visual requirements are less stringent, thereby balancing display quality with manufacturing feasibility.
Data Source
AI summary
A display substrate, a method for driving the same, a display device, and a fine metal mask are provided, and a display area of the display substrate includes a first display sub-area in which pixels are distributed at a high density, and a second display sub-area in which pixels are distributed at a low density.