Display Substrate Layout for High Screen Ratio and Pixel Density
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Solution Overview
Problem
The arrangement of front-facing functional 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 a first display sub-area of high pixel density and a second sub-area of lower pixel density, allowing for the integration of these elements while maintaining high resolution through pixel distribution and light-emitting area adjustments.
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 cannot be improved
Solution Approach 1:
The patent extracts the functional elements (front camera, earphone, fingerprint recognition area, physical button) from the front display area and relocates them to the bottom bezel area. This extraction allows the front face to be fully dedicated to the display, achieving an all-screen effect with improved screen to panel ratio while maintaining all necessary functions in the relocated bottom area.
Solution Approach 2:
The patent transitions from a two-dimensional arrangement where functional elements occupy front display space to a three-dimensional redistribution where functions are moved to the bottom bezel dimension. This dimensional shift allows the display area to expand to the full front surface while functional elements are accommodated in the border region, resolving the space conflict.
2Measurement precision
If pixel distribution density is increased uniformly across the entire display area, then display resolution is improved, but fabrication complexity and cost increase
Solution Approach 1:
The patent implements different pixel distribution densities in different display sub-areas. The first display sub-area (where functional elements are relocated) uses a lower pixel distribution density, while the second display sub-area (main display region) uses a higher pixel distribution density. This local differentiation maintains high display resolution in the primary viewing area while reducing fabrication complexity and cost in the functional element area.
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.