OLED Display Panel Reflecting Layer Layout for Under-Display Sensors
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Solution Overview
Problem
In OLED display technology, the notch design for mounting components like cameras and sensors in mobile terminals reduces the screen-to-body ratio and affects the consistency of the display, as existing solutions do not effectively balance light transmittance and reflection to allow sufficient light for photosensitive devices behind the display regions.
Innovation Solution
A display panel with a first and second display region, where the second region has a thinner reflecting layer and cathode layer compared to the first region, enhancing light transmittance and allowing a photosensitive device to be placed behind the second region, which includes a silver reflecting layer with a transflective function to ensure sufficient light reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the screen-to-body ratio is increased by placing components behind the display, then the aesthetic consistency is improved, but the light availability for photosensitive devices is reduced
Solution Approach 1:
The reflecting layer thickness is locally optimized in the second display region where photosensitive devices are positioned behind the display. By reducing the thickness specifically in this region, sufficient light can penetrate to the components while maintaining the full-screen aesthetic and high screen-to-body ratio.
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
This configuration increases the screen-to-body ratio and ensures the normal operation of photosensitive devices by providing sufficient light, while maintaining the display's functionality and aesthetic consistency.
Implementation Method 1
the anode layer including a reflecting layer, a thickness of the reflecting layer located in the second display region being less than the thickness of the reflecting layer located in the first display region
Implementation Method 2
a light transmittance of the second display region being greater than a light transmittance of the first display region
Data Source
AI summary
A display panel and a display device are disclosed. The display panel includes: a display region including a first display region and a second display region, a light transmittance of the second display region being greater than a light transmittance of the first display region; a substrate located in the first display region and the second display region; an anode layer located on the substrate; a light-emitting layer located on the anode layer; and a cathode layer located on the light-emitting layer; the anode layer includes a reflecting layer, a thickness of the reflecting layer in the second display region is less than the thickness of the reflecting layer in the first display region.