Display Panel Light-Blocking Layers for Curvature and Adhesion Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices face challenges in diversifying the shape of the active region and ensuring reliability, particularly due to issues with light-blocking elements and uneven surfaces that can lead to deterioration in image and signal quality.
Innovation Solution
The electronic device incorporates a first light-blocking element with a greater thickness than a second light-blocking element, which is printed on a layer with an uneven surface, and includes additional layers such as a hard coating layer to planarize and improve adhesion, thereby reducing curvature and detachment risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a light-blocking element is printed on a layer with an uneven surface, then the adhesion and reliability are improved, but the curvature and detachment risk increase
Solution Approach 1:
The patent applies different thicknesses of light-blocking elements at different locations. The first light-blocking element has a greater thickness than the second light-blocking element, creating local variation in properties to address the uneven surface issue while maintaining adhesion reliability.
Solution Approach 2:
The patent introduces a thickness dimension to solve the surface curvature problem. By varying the thickness of light-blocking elements in the vertical dimension, the patent compensates for the uneven surface topology without compromising adhesion.
2Manufacturing precision
If the first light-blocking element has a greater thickness than the second light-blocking element, then the planarization and image quality are improved, but the device complexity increases
Solution Approach 1:
The patent implements local quality by making the first light-blocking element thicker than the second light-blocking element. This localized thickness variation achieves planarization precision in critical areas without unnecessarily complicating the entire device structure.
3Area of stationary object
If electronic modules are disposed below the display panel with overlapping active region, then the active region area is increased, but the light-blocking requirements become more complex
Solution Approach 1:
The patent segments the light-blocking function into multiple elements: a first light-blocking element and a second light-blocking element. This segmentation allows the active region area to be expanded while managing light-blocking requirements through distributed, specialized components.
Solution Approach 2:
Different light-blocking elements are assigned different thicknesses based on their specific functional requirements. The first light-blocking element has greater thickness for areas requiring stronger light blocking, while the second has lesser thickness where less blocking is needed, optimizing the overall system.
Data Source
AI summary
An electronic device includes: a display panel having an active region and a peripheral region adjacent to the active region; an electronic module disposed below the display panel; a first light-blocking element disposed on the display panel and overlapping the peripheral region; and a second light-blocking element disposed on the electronic module with the display panel interposed therebetween. A hole is at least partially surrounded by the active region is defined in a portion of the display panel. The second light blocking element is disposed in an area adjacent to the hole, when viewed in a plan view. The first light-blocking element has a first thickness and the second light-blocking element has a second thickness less than the first thickness.