Light-Blocking Layer on Camera Opening Inner Wall
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Solution Overview
Problem
The increasing demand for full-screen displays in smartphones leads to light leakage issues due to camera punching through film layers on display panels, necessitating a solution to prevent light leakage around camera openings.
Innovation Solution
A display panel design featuring an open hole with a light-blocking layer on its inner wall, combined with a heat dissipation film and shading structure, including a foam and metal layer stack with strategically positioned through holes, to effectively block light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a camera opening is punched through the display module for full-screen display, then the screen ratio is improved, but light leakage occurs around the camera opening
Solution Approach 1:
A light-blocking layer is introduced as an intermediary substance coating the inner wall of the camera opening. This layer acts as a mediator between the camera lens and the display panel, preventing light from leaking along the sides while maintaining the punched-hole structure for full-screen display.
Solution Approach 2:
The light-blocking layer is applied locally only to the inner wall of the camera opening rather than the entire display panel. This localized treatment specifically addresses the light leakage problem at the camera opening without affecting other areas of the display.
2Object-affected harmful factors
If a light-blocking layer is added to the inner wall of the open hole to prevent light leakage, then light leakage is reduced, but the structure becomes more complex
Solution Approach 1:
The light-blocking layer is merged with the existing display module structure by coating it directly on the inner wall of the camera opening. This integration approach adds the light-blocking function without requiring separate additional components or complex assembly structures.
Solution Approach 2:
The display module structure itself serves the dual purpose of housing the camera opening and providing the surface for the light-blocking layer. The inner wall of the opening acts as both a structural element and a substrate for light blocking, eliminating the need for separate light-blocking components.
3Object-affected harmful factors
If multiple layers including foam and metal layers are stacked to block light, then light blocking performance is improved, but the panel thickness increases
Solution Approach 1:
Instead of using multiple thick layers, a thin light-blocking coating is applied to the inner wall surface. This partial action approach provides sufficient light blocking performance by treating the surface where light actually leaks, rather than using excessive material thickness.
Solution Approach 2:
The light-blocking solution transitions from a three-dimensional bulk material approach (multiple stacked layers) to a two-dimensional surface coating approach. By coating the inner wall surface, light blocking is achieved through surface treatment rather than through thick material stacking, thus avoiding increased panel 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
The solution effectively prevents light leakage around camera openings, ensuring better shading performance and maintaining a simple, reliable structure without increasing panel thickness, thus enhancing display quality.
Implementation Method 1
a shading structure, including a light-blocking layer on an inner wall of the open hole
Implementation Method 2
The foam layer includes a first structure part between the display module and the metal layer and a second structure part on the inner wall of the open hole. The light-blocking layer includes the second structure part. Optionally, in the above display panel provided by embodiments of the present disclosure, a material of the foam layer includes a shading material.
Data Source
AI summary
A display panel and a manufacturing method thereof, and a display device. The display panel comprises: a display module having an opening extending therethrough in a direction perpendicular to a light-exiting surface; and a light-shielding structure comprises a light-blocking layer positioned at an inner wall of the opening of the display module. The light-blocking layer can effectively prevent light from leaking from a film layer of the display module where the opening extends therethrough.