Curved Display Panel Protective Member for Stress Reduction
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Solution Overview
Problem
The manufacturing of curved display panels often results in inconsistent distances between bent and other portions, leading to potential damage and stress on flexible circuit boards attached to the display panel.
Innovation Solution
A display device design that includes a main portion, a bending portion, and a sub-portion with a protective member between the display panel and the driving board, allowing for a constant distance maintenance and reduced stress on the flexible circuit board, utilizing a stage, support unit, and pressing unit to accurately position and attach the protective member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a curved display panel is manufactured by bending, then the display device achieves a curved shape for enhanced design, but the distance between the bent portion and other portions becomes inconsistent leading to damage and stress on flexible circuit boards
Solution Approach 1:
A support structure is placed inside the display panel before the bending process to pre-establish the correct geometric relationships and maintain constant distances between different portions during curvature formation. This preliminary positioning prevents deformation and ensures manufacturing precision.
Solution Approach 2:
A support structure acts as an intermediary element between the bending forces and the display panel components. This mediator maintains the structural integrity and proper spacing during the bending process, preventing direct stress transmission that would cause inconsistent distances and potential damage.
2Shape
If the display panel is bent to create a curved shape, then aesthetic and design requirements are met, but stress is applied to the flexible circuit board attached to the panel
Solution Approach 1:
A support structure is positioned within the display panel before bending to cushion and distribute the stresses that occur during curvature formation. This pre-positioned support prevents excessive stress concentration on the flexible circuit board and other sensitive components.
Solution Approach 2:
The support structure serves as a mediator between the bending forces and the flexible circuit board, absorbing and redistributing mechanical stress. This intermediary prevents direct stress transmission to the circuit board, protecting it from damage while enabling the curved shape.
3Reliability
If the flexible circuit board is attached to the curved display panel, then the display device achieves functional integration, but the circuit board is susceptible to damage from inconsistent bending and stress
Solution Approach 1:
The support structure is installed before the flexible circuit board is attached to the curved display panel. This preliminary action ensures that the support structure is in place to protect the circuit board from damage during subsequent handling, assembly, and operation.
Solution Approach 2:
The support structure provides beforehand cushioning and protection for the flexible circuit board against mechanical damage from inconsistent bending and stress during the curvature formation and assembly processes.
Data Source
AI summary
A display device includes: a display panel including a main portion, a bending portion extending from a side of the main portion, and a sub portion extending from a side of the bending portion; a driving board connected to a side of the sub portion and overlapping the main portion of the display panel in a thickness direction; and a protective member disposed between the display panel and the driving board, wherein the sub portion is folded with respect to the bending portion and attached to a back surface of the main portion.