Under-Display High-Transmittance Pixel Layout for Optical Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current electronic devices face challenges in improving the light receiving effect of optical sensing modules due to the presence of electronic elements or wires in the display region, which obstruct light reception.
Innovation Solution
A display device with a pixel region divided into a first and second area, where the optical sensing module is positioned over the second area with higher transmittance, and the pixels in this area are designed to have lower size or density to enhance light reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If functional elements and wires are disposed in the display region to increase screen-to-body ratio, then the screen-to-body ratio is improved, but the light receiving effect of the optical sensing module deteriorates
Solution Approach 1:
The display region is segmented into a first area and a second area, where the first area contains functional elements and wires while the second area is designated as a light receiving area with higher transmittance. This segmentation allows the optical sensing module to receive light through the second area without obstruction from electronic elements, thus resolving the contradiction between maintaining high screen-to-body ratio and ensuring adequate light reception.
Solution Approach 2:
Different areas of the display region are assigned different optical properties: the first area has standard transmittance suitable for displaying functional elements, while the second area has higher transmittance optimized for light reception. This local quality differentiation enables coexistence of functional elements and optical sensing without mutual interference.
2Object-affected harmful factors
If pixels in the second area are designed with lower size or density to increase transmittance, then the light receiving effect is improved, but the display resolution in that area deteriorates
Solution Approach 1:
The display region is divided into two distinct areas with different pixel configurations. The first area maintains normal pixel density for high-resolution display, while the second area uses lower pixel density or larger pixel size to increase light transmittance. This segmentation allows each area to be optimized for its specific function without compromising the other.
Solution Approach 2:
Different pixel design parameters are applied to different regions: the first area uses standard pixel size and density for optimal display quality, while the second area uses enlarged pixels or reduced density to maximize light transmission to the optical sensing module below, achieving local optimization for light reception.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design improves the light receiving effect of the optical sensing module by increasing the luminous flux and brightness of the second area, thereby enhancing the sensing performance.
Implementation Method 1
The transmittance of the second area is greater than the transmittance of the first area. The second area has a coverage with a width of not less than 0.43 millimeter (mm). The optical sensing module is disposed corresponding to the second area of the pixel region of the display panel. The optical sensing module includes an aperture, wherein the aperture can accept lights through the second area.
Data Source
AI summary
A display panel and a display device are provided by the present disclosure, wherein the display panel includes a pixel region having a plurality of pixels. The pixel region includes a first area and a second area, wherein the transmittance of the second area is greater than the transmittance of the first area. The second area has a coverage, and a width of the coverage is not less than 0.43 millimeters.