Under-Display Optical Sensor Layout With High-Transmittance Pixel Zone
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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 affect light transmission.
Innovation Solution
A display device is designed with a display panel having distinct areas of varying transmittance, where an optical sensing module is positioned corresponding to the area with higher transmittance. This configuration includes a supporting layer, an adhesive layer, and an optical sensing module disposed in an opening that exposes the substrate's bottom surface.
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 divided into a first area with normal pixel arrangement and a second area with reduced or no pixels, allowing the optical sensing module to be positioned in the second area where light transmission is not blocked by pixel structures or wires
Solution Approach 2:
The optical sensing module is positioned at a different spatial location (in the second area with higher transmittance) rather than trying to integrate it within the dense pixel region, resolving the conflict between high screen-to-body ratio and light receiving effect
2Measurement precision
If pixels are densely arranged in the display region, then the display resolution is improved, but the transmittance of the region deteriorates
Solution Approach 1:
Different areas of the display panel have different pixel densities: the first area has normal pixel density for high resolution display, while the second area has reduced or no pixels to provide high transmittance for the optical sensing module
Solution Approach 2:
The display panel is segmented into functional zones with different optical properties, allowing simultaneous achievement of high display resolution in the first area and high light transmission in the second area
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 increased transmittance in the designated area enhances the light receiving effect of the optical sensing module, thereby improving its sensing performance.
Implementation Method 1
a transmittance of the second area is greater than a transmittance of the first area... the optical sensing module having an aperture being able to accept lights through the second area
Data Source
AI summary
A display device includes a display panel having a first area and a second area. The display panel includes a substrate and a plurality of pixels disposed on the substrate and disposed in the first area and the second area, wherein a transmittance of the second area is greater than a transmittance of the first area. The display device further includes a supporting layer supporting the display panel, an adhesive layer connecting the supporting layer and the substrate of the display panel, and an optical sensing module disposed corresponding to the second area and having an aperture being able to accept lights through the second area. An opening is formed in the supporting layer and the adhesive layer, the opening exposes a bottom surface of the substrate, and the optical sensing module is disposed in the opening.