Bending Area Side Surface Protective Layer for Display Panel
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Solution Overview
Problem
The existing display devices face defects due to protrusion portions generated on the side surfaces of the bending area during the processing of protective films, which can lead to interference and damage when the display panel is bent or assembled.
Innovation Solution
The display device incorporates a recess portion on the bending area with a protrusion portion that is covered by a coating layer, preventing physical removal of the protrusion and reducing defects by stabilizing the bending structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a protective film is processed on the bending area of the display panel, then the display panel can be bent, but protrusion portions are generated on the side surfaces of the bending area causing defects
Solution Approach 1:
The protective film is divided into multiple regions: a first protective film region that does not overlap the bending area, and a second protective film region that overlaps the bending area. This segmentation allows the protective film to accommodate bending without generating protrusion portions on the side surfaces.
Solution Approach 2:
Different regions of the protective film are designed with different properties: the first protective film provides full coverage for protection, while the second protective film is positioned to avoid interference during bending. This local differentiation resolves the contradiction between protection and bending capability.
2Manufacturing precision
If the protrusion portion is physically removed from the display panel, then defects are reduced, but the structural integrity and mechanical stability are compromised
Solution Approach 1:
The recess portion is pre-formed on the side surface of the bending area before the protective film is applied. This preliminary action creates a space that accommodates the protrusion portion, preventing defects while maintaining the protrusion for structural integrity.
Solution Approach 2:
The recess portion acts as an intermediary structure between the protrusion portion and the external environment. It contains the protrusion portion within the display panel's side surface, preventing it from causing defects while maintaining the bending capability.
3Adaptability or versatility
If the protective film overlaps the bending area, then the display panel can be bent, but the protrusion portion interferes with assembly and operation
Solution Approach 1:
The solution moves the problem from the lateral dimension to the vertical dimension by creating a recess portion that extends inward from the side surface. This allows the protrusion portion to be accommodated within the third dimension, eliminating interference with assembly and operation.
Data Source
AI summary
A display device includes a display panel including a main area, a bending area at which the display panel is bendable, and a sub area, in order. The main area includes a display area and a non-display area which is adjacent to the display area. The bending area connects the sub area to the main area at the non-display area thereof, and is recessed from outer side surfaces of the main area and the sub area, to define a recess portion of the display panel at the bending area.