Under-screen Camera OLED Display Polarizing Layer Through Hole
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Solution Overview
Problem
Existing under-screen camera solutions for OLED displays face challenges such as large hole sizes, reduced light transmittance, increased production complexity, and difficulty in aligning camera modules, which affect user experience and device thickness.
Innovation Solution
An organic light-emitting diode display screen with a light-transmitting area and a main display area, where the polarizing layer has a through hole filled with optical glue, allowing the camera module to be positioned at the rear end without punching holes through the screen, reducing the hole size and improving light transmittance while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If through holes are punched in the OLED screen to avoid insufficient light intake, then light transmittance is improved, but production process complexity increases and yield decreases
Solution Approach 1:
The patent extracts the light-blocking function from the polarizing layer by creating through holes only in this layer, while maintaining the integrity of other OLED layers. This selective extraction allows light to pass through to the camera module without requiring complex through-screen hole punching, thus improving light transmittance while avoiding increased production complexity
Solution Approach 2:
The patent segments the hole structure into two parts: through holes in the polarizing layer for light transmission, and blind holes in the protective layer for camera module positioning. This segmentation allows each layer to serve its specific function without requiring complex through-screen penetration, resolving the contradiction between light transmittance and production complexity
2Area of stationary object
If the area of the punched or dug part of the display screen is reduced, then user experience is improved, but light intake for the under-screen camera module is insufficient
Solution Approach 1:
The patent applies local quality by creating through holes specifically in the polarizing layer where light transmission is needed, while maintaining the intact structure of other layers. The blind holes in the protective layer are positioned precisely where camera module alignment is required. This localized structural differentiation allows small hole areas to provide sufficient light intake for the camera module
3Adaptability or versatility
If the OLED screen structure is modified to accommodate under-screen camera, then camera functionality is improved, but device thickness increases
Solution Approach 1:
The patent implements nesting by placing the camera module within the display screen structure itself, specifically positioning it behind the protective layer and polarizing layer. The camera module is nested within the existing layer structure rather than adding external protrusions, allowing camera functionality to be integrated without significantly increasing device thickness
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 solution reduces production complexity, minimizes hole size, enhances light transmittance, and decreases device thickness, improving user experience and production efficiency while maintaining a full-screen display effect.
Implementation Method 1
the polarizing layer has a polarizing layer through hole, and a portion of the pixel layer directly below the polarizing layer through hole forms the light-transmitting area
Data Source
AI summary
An organic light-emitting diode display screen (100) includes: a substrate (131), a buffer layer (132), a first electrode layer (133b), a pixel layer (133a), a second electrode layer (133c), a packaging layer (134), a polarizing layer (135), and a cover plate (136). The pixel layer (133a) includes a main display area (140) and a light transmissive area (139). The polarizing layer (135) has a polarizing layer through hole (135a). The part of the pixel layer (133a) located directly below the polarizing layer through hole (135a) forms the light transmissive layer (139), and the main display area (140) and the light transmissive area (139) are not separated using a packaging material. The packaging layer (134) packages the pixel layer (133a) by covering upper surfaces of the main display area (140) and the light transmissive area (139). There also provides a corresponding under-screen camera assembly and a terminal device. The present invention improves production efficiency and reduces production costs of an under-screen camera assemblies based on a “hole-punch screen”, and helps reduce a size of a hole of the “hole-punch screens” while ensuring the amount of entered light of the under-screen camera modules.