Display Device Touch Panel Layout with Cushion Layer to Reduce Breakage
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Solution Overview
Problem
Existing display devices face issues with the touch panel breaking due to height differences and superposition of components, leading to potential structural instability and increased risk of damage.
Innovation Solution
The polarizer and the first portion of the TFPC are arranged separately, with a cushion layer intervening to eliminate height differences and enhance stability, using a thermosetting ink for the insulating portion to reduce stress and a conductive or insulating adhesive for fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the touch panel components are arranged in a stacked configuration, then the device achieves compact structure, but height differences and superposition cause structural instability and increase breakage risk
Solution Approach 1:
The patent introduces a cushion layer as an intermediary component between the touch panel and other stacked components. This cushion layer acts as a mediator that absorbs height differences and mechanical stress, preventing direct contact between rigid components that would cause breakage. The cushion layer maintains the compact stacked structure while eliminating the instability caused by component superposition.
2Stability of the object's composition
If rigid fixation methods are used to secure components, then structural stability is improved, but stress concentration increases and flexibility is reduced
Solution Approach 1:
The patent changes the mechanical parameters of the fixation system by using a cushion layer with specific elastic properties. Instead of rigid fixation with high stiffness, the cushion layer provides soft fixation with appropriate elasticity and compliance. This parameter change allows the fixation to be stable while distributing stress and maintaining flexibility, preventing stress concentration that would lead to component breakage.
Data Source
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AI summary
The present disclosure provides a display device including a display panel (01); a touch panel (02); a polarizer (03); a touch flexible printed circuit board (04), which includes a first portion (041), a second portion (042) and a bending portion (043) connecting the first portion (041) and the second portion (042); a cover plate (05); a first adhesive layer (06); and a cushion layer (07), which is disposed between the first portion (041) and the first adhesive layer (06). An orthographic projection of the polarizer (03) on a reference plane falls outside an orthographic projection of the first portion (041) on the reference plane, and the reference plane is a plane in which a touch surface of a touch panel (02) is disposed. The polarizer and the first portion of the TFPC are arranged separately. In this way, the TFPC and the polarizer may be prevented from being superimposed. Accordingly, the risk of breakage of the touch panel is reduced.