Under-Display Sensor Region Layout for Transparent Full-Face Displays
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Solution Overview
Problem
Electronic devices with full-face displays face challenges in integrating sensors like cameras and ambient light sensors under the display stack, as existing solutions may compromise display quality or increase manufacturing complexity.
Innovation Solution
The integration of sensors is achieved by modifying display regions to include subpixel islands and opaque layers with aligned and offset openings, allowing for reduced subpixel density and altered routing of gate and data lines, maintaining display functionality while increasing transparency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sensors are placed under the display stack in a full-face display device, then device capabilities are enhanced, but display quality is compromised
Solution Approach 1:
The patent applies local quality by creating distinct display regions: a first region with reduced subpixel density for sensor placement and a second region with full subpixel density for normal display functionality. This allows different parts of the display to have different properties, enabling sensor integration without compromising overall display quality.
Solution Approach 2:
The display is segmented into multiple regions with different subpixel densities. The first region overlapping the sensor has lower subpixel density, while the second region has full subpixel density. This segmentation allows the sensor to be accommodated while maintaining display functionality in other areas.
2Adaptability or versatility
If subpixel density is reduced in the region overlapping the sensor, then sensor integration is enabled, but display resolution is affected
Solution Approach 1:
The patent implements local quality by reducing subpixel density only in the specific region where the sensor is located, while maintaining full subpixel density in the rest of the display. This localized approach enables sensor integration without unnecessarily reducing display resolution across the entire screen.
Solution Approach 2:
The display is divided into segments with different subpixel densities. The first segment (overlapping the sensor) has reduced subpixel density to accommodate the sensor, while the second segment maintains full resolution. This segmentation balances sensor integration needs with display resolution requirements.
3Manufacturing precision
If opaque layers with aligned and offset openings are used, then sensor transparency is improved, but manufacturing complexity increases
Solution Approach 1:
The opaque layers are segmented with different opening patterns: aligned openings in the first opaque layer and offset openings in the second opaque layer. This segmentation allows light to pass through in specific patterns while maintaining structural integrity and enabling sensor functionality.
Solution Approach 2:
The offset openings in the second opaque layer act as an intermediary structure between the aligned openings in the first opaque layer and the sensor. This intermediate structure enables precise light control while facilitating sensor integration without requiring direct modification of the display stack.
Data Source
AI summary
A display may overlap a sensor such as a camera or ambient light sensor. A portion of the display that overlaps the sensor may be modified to increase transparency relative to the remaining portion of the display. The modified portion of the display may have pixel islands that conform to a regular grid pattern of the remaining portion of the display. One or more gate lines and/or one or more data lines may pass through the modified portion of the display without connecting to any subpixels in the modified portion of the display. An opaque pixel definition layer may include some openings that are aligned with opaque masking layer openings to allow on-axis light to pass through to a sensor and some openings that are offset relative to respective opaque masking layer openings to allow off-axis light to pass through to the sensor.