Display Panel Region Layout for Under-Screen Sensor Transmittance
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Solution Overview
Problem
The challenge in electronic devices is to optimize light transmittance across different areas to accommodate varying requirements of optical sensors, which current designs struggle to achieve effectively, impacting the screen-to-body ratio and overall performance.
Innovation Solution
The electronic device incorporates a display panel with distinct areas, each having different pixel densities and signal line arrangements, allowing for varying transmittance levels by adjusting the density of pixels and signal lines, enabling specific optical sensing modules to be positioned according to their transmittance requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If different types of optical sensors are disposed under the screen to improve screen-to-body ratio, then the screen-to-body ratio is improved, but the light transmittance requirements of different optical sensors cannot be simultaneously satisfied
Solution Approach 1:
The display panel is divided into multiple regions with different transmittance characteristics. The first region has a first transmittance suitable for first optical sensors, while the second region has a second transmittance suitable for second optical sensors. This local differentiation allows different optical sensors to be accommodated with their specific transmittance requirements while maintaining a high screen-to-body ratio.
Solution Approach 2:
The display panel is segmented into distinct regions (first region and second region) with different optical properties. Each region can be independently optimized for specific optical sensor requirements, enabling multiple types of sensors to coexist under the screen without compromising individual performance.
2Reliability
If the transmittance of the display panel is increased to accommodate optical sensors, then the optical sensing functionality is improved, but the display quality and visibility may deteriorate
Solution Approach 1:
Different regions of the display panel have different transmittance levels optimized for their specific functions. The first region maintains appropriate transmittance for display quality while the second region is optimized for optical sensor functionality. This spatial differentiation resolves the conflict between display quality and sensor performance.
3Ease of manufacture
If uniform pixel density is maintained across the display panel, then the manufacturing process is simplified, but the transmittance cannot be optimized for different optical sensor requirements
Solution Approach 1:
The pixel density is varied locally across different regions of the display panel. The first region has a first pixel density while the second region has a second pixel density, allowing each region to achieve optimal transmittance for its intended optical sensor while remaining compatible with standard manufacturing processes.
Data Source
AI summary
An electronic device includes a display panel including a first area and a second area, a first optical sensing module disposed corresponding to the first area, and a second optical sensing module disposed corresponding to the second area. The first area includes a plurality of first pixels and a plurality of first signal lines electrically connected with the first pixels. The second area includes a plurality of second pixels and a plurality of second signal lines electrically connected with the second pixels, wherein a transmittance of the second area is greater than a transmittance of the first area.