Stacked Through-Hole Display Panel for Under-Screen Camera Transmittance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display panels with under-screen cameras face challenges due to low light transmittance, making it difficult for external visible light to enter the camera lens and generate an image effectively.
Innovation Solution
The display panel design includes a camera area with a flexible substrate, through-holes, and light-transmitting layers made of transparent resin materials, particularly transparent polyimide, which significantly increase visible-light transmittance, allowing for improved light intensity and camera performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the front camera lens is disposed under the display panel to achieve true full-screen design, then the display panel integrity is improved, but the visible-light transmittance deteriorates due to the low transparency of flexible substrates
Solution Approach 1:
The flexible substrate is segmented by creating through-holes at the camera area, dividing it into multiple regions. This allows light to pass through the through-holes to reach the camera lens while maintaining the integrity of the display panel structure. The segmentation enables the camera area to have different optical properties from the rest of the display.
Solution Approach 2:
Different regions of the display panel are given different qualities: the camera area has high light transmittance through the use of transparent resin materials and through-holes, while other areas maintain the standard flexible substrate properties. This local differentiation allows the camera area to transmit light effectively while preserving overall panel integrity.
2Illumination intensity
If transparent resin materials are used to increase light transmittance in the camera area, then the visible-light transmittance is improved, but the manufacturing process complexity increases
Solution Approach 1:
The manufacturing process merges multiple steps into integrated sequences. The transparent resin material is applied to form both the first and second light-transmitting layers in sequence, and the through-holes are formed through coordinated etching of both the flexible substrate and inorganic layer. This merging reduces the number of separate manufacturing operations.
Solution Approach 2:
The transparent resin material serves multiple functions simultaneously: it forms the light-transmitting layers, provides structural support in the camera area, and enables the etching process to create through-holes. The material's properties allow it to self-organize into the required layered structure during the manufacturing process.
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 transparency and light transmittance in the camera area enhance camera performance in electronic devices with under-screen cameras, meeting user demands for true full-screen designs without notches.
Implementation Method 1
visible-light transmittance of the transparent polyimide material ranges from 95% to 100%
Data Source
AI summary
A display panel is divided into a display area and a camera area. The camera area includes a first through-hole, a first light-transmitting layer, an inorganic layer, a second through-hole, a second light-transmitting layer, and an image acquisition device. The manufacturing method of the display panel includes a rigid substrate providing step, a flexible substrate forming step, a first etching step, a first light- transmitting layer forming step, a first thin-film transistor (TFT) forming step, a second etching step, a second light-transmitting layer forming step, a second TFT forming step, a rigid substrate stripping step, and an image acquisition device disposing step.