Display Panel Blocking Layer Openings for Under-Display Light Control
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Solution Overview
Problem
Display panels face challenges in integrating additional functions, such as sensors or cameras, without compromising the display area or image quality, as existing designs often require dedicated space that reduces the area available for image display.
Innovation Solution
A display panel design featuring a substrate with two pixels spaced by a transmission area, where a blocking layer with convex portions allows for the integration of components like sensors or cameras by enabling light transmission through specific openings, maintaining image display capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a blocking layer with simple opening structure is used, then manufacturing process is simple, but light diffraction occurs affecting display quality
Solution Approach 1:
The patent applies curvature by forming convex portions along the edges of the opening in the blocking layer. These convex portions have curved surfaces that redirect diffracted light, preventing it from entering the pixel region. This curvature modification resolves the technical contradiction by maintaining the simple opening structure for easy manufacturing while eliminating light diffraction to preserve display image quality.
2Adaptability or versatility
If dedicated space is allocated for sensors or cameras, then additional functions are integrated, but display area is reduced
Solution Approach 1:
The patent merges the sensor/camera opening region with the display area by allowing the opening to extend into regions that would otherwise be used for display. The convex portions guide light around the sensor/camera components while maintaining display functionality in the surrounding areas. This merging approach enables function integration without sacrificing display area.
Solution Approach 2:
The patent utilizes the third dimension (depth) by forming convex portions that protrude into the opening space. This dimensional approach allows light to be redirected around obstacles in the optical path without requiring additional lateral space, thereby integrating sensors or cameras without reducing the two-dimensional display area.
3Adaptability or versatility
If opening width in blocking layer is increased for component integration, then component placement is facilitated, but light transmission control deteriorates
Solution Approach 1:
The convex portions with curved surfaces actively manage light paths in wider openings. The curvature geometry is designed to intercept and redirect diffracted light away from the pixel region, maintaining precise light transmission control even when the opening width is increased to accommodate sensors or cameras.
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 design allows for the integration of additional components like sensors or cameras while maintaining high image quality and display area efficiency, as the convex portions in the blocking layer minimize light diffraction and ensure effective light transmission.
Implementation Method 1
the convex portions in the blocking layer minimize light diffraction and ensure effective light transmission
Data Source
AI summary
A display panel includes a substrate, two pixels arranged on the substrate and spaced from each other with a transmission area therebetween, and a blocking layer between the substrate and the two pixels, the blocking layer including an opening corresponding to the transmission area. An edge of the opening includes a plurality of convex portions.