Display Panel Pixel Density and Light Transmittance Segmentation
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Solution Overview
Problem
Current full-screen display solutions for electronic devices, such as mobile phones and tablets, face a trade-off between high pixel density and light transmittance in areas reserved for photosensitive elements, where the pixel density is typically low to ensure light transmittance for functions like front camera and infrared sensing.
Innovation Solution
A display panel design with multiple display areas, where the first display area has higher light transmittance and houses light-emitting units and pixel circuits, allowing for increased pixel density by strategically aligning and distributing signal lines and pixel circuits to maximize the number of light-emitting elements within the limited area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the pixel density is increased in the photosensitive element integration area, then the display resolution is improved, but the light transmittance decreases
Solution Approach 1:
The display area is divided into multiple zones with different pixel densities: a first display area with higher pixel density for visual display, and a second display area with lower pixel density for light transmission to photosensitive elements. This segmentation allows each zone to optimize for its specific function, resolving the contradiction between pixel density and light transmittance.
Solution Approach 2:
Different regions of the display panel are assigned different optical properties: the first display area has high pixel density suitable for display, while the second display area has lower pixel density and higher light transmittance suitable for photosensitive element integration. This local differentiation allows simultaneous optimization of both display quality and light transmission.
2Measurement precision
If the pixel density is increased in the display area, then the display resolution is improved, but the area available for light transmission to photosensitive elements is reduced
Solution Approach 1:
The display panel is segmented into a first display area for high-resolution display and a second display area for light transmission. This spatial segmentation ensures that the photosensitive element integration area is preserved while the display area achieves high pixel density.
Solution Approach 2:
The display panel utilizes different spatial zones (dimensions) to separate display functions from light transmission functions. By arranging pixel circuits and light-emitting elements in specific spatial configurations, the patent achieves high pixel density in the display area while maintaining adequate area for light transmission in the second display area.
3Measurement precision
If more pixel circuits and signal lines are added to increase pixel density, then the display resolution is improved, but the structural complexity increases
Solution Approach 1:
The pixel circuits are segmented and arranged in different display areas with different density requirements. The first display area has higher pixel circuit density for display, while the second display area has lower density for light transmission, reducing overall structural complexity while maintaining high display resolution.
Solution Approach 2:
Instead of uniformly high pixel density across the entire panel, the patent applies high pixel density only where needed for display (first display area), and reduces pixel density in areas dedicated to light transmission (second display area). This partial application of high density reduces structural complexity while achieving the required display resolution.
Data Source
AI summary
Display panels and display devices are provided. The display panel may include a first display area, a second display area and a third display area with a light transmittance of the first display area being greater than a light transmittance of the third display area; first pixel circuits; second pixel circuits; third pixel circuits; first light-emitting units, second light-emitting units; third light-emitting units; and first signal lines extending along a first direction and spaced apart along a second direction intersecting the first direction. Each first signal line is connected with one or more first pixel circuits, one or more second pixel circuits and one or more third pixel circuit, and the one or more first pixel circuit and the one or more third pixel circuit electrically connected to each of at least one portion of first signal lines are misaligned along the first direction.