Window Panel Light-Shielding Structure for Stronger Display Adhesion
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Solution Overview
Problem
Adhesive defects and foreign matter introduction during assembly of display devices due to ink layer formation on window panels, leading to reduced productivity.
Innovation Solution
A window panel design with a base substrate featuring a light-shielding pattern comprising a first and second light-shielding pattern with different widths and surface roughness, enhancing adhesion to both the display module and housing member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an ink layer is formed on the edge of the window panel to discriminate the non-display part, then the non-display part can be visually distinguished and wiring can be hidden, but adhesive defects occur during assembly and foreign matter is easily introduced
Solution Approach 1:
The patent extracts the light-shielding function from the ink layer and implements it through a dedicated light-shielding pattern structure. The ink layer is removed from the window panel edge, and its light-shielding function is transferred to a separate pattern formed on the window panel that extends into the non-display area, thereby eliminating the adhesive defects and foreign matter issues caused by the ink layer while maintaining visual discrimination.
Solution Approach 2:
The patent introduces a light-shielding pattern as an intermediary element between the display area and the non-display area. This pattern serves as a mediator that provides both the visual boundary function and the improved adhesion surface, replacing the problematic ink layer while maintaining the necessary functional separation.
2Device complexity
If a light-shielding pattern with uniform width is used, then the structure is simple, but adhesion to both display module and housing member is insufficient
Solution Approach 1:
The patent applies local quality by creating a light-shielding pattern with varying widths at different locations. The pattern has a first width in the display area and a second width in the non-display area, with the second width being greater than the first width. This localized variation in width provides enhanced adhesion surfaces for both the display module and housing member while maintaining structural simplicity.
3Productivity
If the window panel assembly process is simplified, then productivity increases, but adhesive defects and foreign matter introduction occur
Solution Approach 1:
The patent implements preliminary action by pre-forming the light-shielding pattern on the window panel before assembly. The light-shielding pattern is created with extended width in the non-display area beforehand, which subsequently provides built-in adhesion enhancement and foreign matter prevention during the assembly process, thereby maintaining both high productivity and high manufacturing precision.
Data Source
AI summary
A window panel including a base substrate comprised of a transmission area and a bezel area adjacent to the transmission area, and a light-shielding pattern disposed on the base substrate overlapping the bezel area. The light-shielding pattern includes a first light-shielding pattern disposed on the base substrate and having a first width extending from a first side of the base substrate to a second side of the base substrate, beneath the bezel area of the base substrate, and a second light-shielding pattern disposed on the first light-shielding pattern and having a second width extending from the first side of the base substrate to the second side of the base substrate, beneath the bezel area of the base substrate, wherein the second width is different from the first width. The first light-shielding pattern and the second light-shielding pattern including different materials.