Patterned Anode Display Panel for Under-Screen Camera Light Transmission
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Solution Overview
Problem
Conventional display panels, particularly in full-screen smartphones, suffer from poor light transmission efficiency due to the presence of layers such as the PI film, anode, and polarizing film, which affect the photosensitive performance of under-screen cameras.
Innovation Solution
A display panel design featuring a photosensitive region with a patterned anode structure, a protrusion on the pixel definition layer, and a hollow region in the polarizing film to maximize light transmission, allowing more light to reach the camera's photosensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional display panel structure with complete layers (PI film, anode, polarizing film) is used, then display function is achieved, but light transmission to photosensor deteriorates
Solution Approach 1:
The anode is segmented into patterned transparent regions and reflective regions, allowing different portions to serve different functions - transparent areas enable light passage to the photosensor while reflective areas maintain display functionality. This segmentation resolves the contradiction by dividing the anode's role between light transmission and display operation.
Solution Approach 2:
Different regions of the display panel are given different optical properties. The pixel definition layer is removed or made transparent in the photosensitive region to allow light passage, while maintaining its light-blocking function in non-photosensitive regions. The anode similarly has localized transparency in the photosensitive area, creating local quality variations that satisfy both light transmission and display requirements.
2Illumination intensity
If pixel definition layer completely covers anode, then pixel isolation is achieved, but light transmission to photosensor deteriorates
Solution Approach 1:
The pixel definition layer is segmented to be present only in non-photosensitive regions and absent or transparent in the photosensitive region. This allows the layer to fulfill its pixel isolation function where needed while permitting light transmission where the photosensor requires it, resolving the contradiction between pixel definition and light transmission.
Solution Approach 2:
Instead of making the pixel definition layer transparent throughout and relying on other structures for pixel isolation, the invention inverts the approach by making the pixel definition layer opaque where needed and transparent where light transmission is required. This inversion resolves the contradiction by placing the light-blocking function where it is needed and the light-transmission function where it is required.
3Illumination intensity
If polarizing film is fully present, then display polarization is achieved, but light transmission to photosensor deteriorates
Solution Approach 1:
The polarizing film is segmented to be present in non-photosensitive regions for maintaining display polarization while being absent or transparent in the photosensitive region to allow light transmission. This segmentation resolves the contradiction by dividing the polarizing function from the light transmission function in different spatial regions.
Solution Approach 2:
The polarizing film creates local quality differences across the display panel - polarized in regions where display function is needed and transparent in the photosensitive region. This local differentiation resolves the contradiction between maintaining display polarization and enabling light transmission to the photosensor.
Data Source
AI summary
The present invention provides a display panel, a manufacturing method of the display panel, and an intelligent terminal. The display panel has a photosensitive region for placing a photosensor of a camera. The display panel includes: an array substrate; and anodes disposed on the array substrate. The photosensitive region is arranged on one side of the array substrate away from the anodes, and the anode which is arranged corresponding to the photosensitive region has a patterned structure.