Display Panel Pixel Layout for Under-Display Sensor Luminance
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Solution Overview
Problem
The integration of sensors such as cameras and proximity sensors with display regions in electronic devices like smartphones leads to a decrease in pixel density, causing luminance discrepancies and image discontinuities due to varying light transmittance.
Innovation Solution
The electronic device incorporates a display panel with distinct first and second display regions, where the second region has higher light transmittance and smaller, obliquely arranged pixels, alternating with transmissive regions, to maintain consistent luminance and improve image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sensors are integrated with display regions to occupy majority of front surface, then device functionality is improved, but pixel density decreases causing luminance discrepancies
Solution Approach 1:
The display panel is divided into a first display region with first pixels and a second display region with second pixels. Each region has different pixel densities optimized for its specific function: the first display region maintains high pixel density for normal display, while the second display region has lower pixel density to accommodate sensor integration, thereby resolving the luminance discrepancy issue.
2Quantity of substance
If pixel density is decreased in sensor region to increase light transmittance, then sensor performance is improved, but image continuity is disrupted due to luminance difference
Solution Approach 1:
The patent changes the pixel density parameter between different display regions. The first pixels in the first display region have higher density while second pixels in the second display region have lower density. This parameter variation allows optimized light transmittance in the sensor region while maintaining overall image continuity through careful design of the transition between regions.
3Area of stationary object
If display region occupies majority of front surface, then visual display area is increased, but sensor integration becomes difficult
Solution Approach 1:
The display panel is segmented into distinct first and second display regions with different characteristics. This segmentation allows the display area to occupy the majority of the front surface while dedicating specific segments (second display region) for sensor integration, thus resolving the conflict between maximizing display area and enabling sensor integration.
Data Source
AI summary
An electronic device may include a display panel displaying an image. The display panel may include: a substrate including a first display region and a second display region, which are adjacent to each other, and a non-display region surrounding at least one side of each of the first and second display regions; a plurality of first pixels provided in the first display region; and a plurality of second pixels provided in the second display region. The second display region may have a light transmittance higher than that of the first display region, and each of the first pixels may have a size different from that of each of the second pixels.