Touch Panel Decoration Part Integration
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Solution Overview
Problem
Conventional touch panels are costly and time-consuming to manufacture due to the large number of components required, particularly the need for a separate display sheet with a decoration part that must be pasted on top of the substrate.
Innovation Solution
The touch panel design incorporates dark-colored upper electrodes and insulating layers that form a frame-like decoration part along the outer periphery of the substrate, concealing lower electrodes and eliminating the need for a separate display sheet, allowing for assembly with fewer components and simplified manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a separate display sheet with decoration part is used to conceal lower electrodes, then the lower electrodes are concealed, but the number of components increases and manufacturing complexity increases
Solution Approach 1:
The patent merges the decoration part with the display sheet by forming the decoration part directly on the display sheet during the manufacturing process. This integration eliminates the need for a separate decoration part component, reducing the total number of components while maintaining the concealment function. The decoration part is created as part of the display sheet structure itself, combining multiple functions into a single component.
2Object-affected harmful factors
If a separate display sheet with decoration part is used, then lower electrodes are concealed, but manufacturing time increases
Solution Approach 1:
The patent applies the preliminary action principle by pre-forming the decoration part on the display sheet during the display sheet manufacturing process, before the touch panel assembly is completed. This preliminary formation of the decoration part eliminates the need for subsequent assembly steps where separate decoration parts would be attached, thereby reducing overall manufacturing time while achieving the same concealment effect.
3Object-affected harmful factors
If multiple separate components are used including display sheet with decoration part, then lower electrodes are concealed, but manufacturing cost increases
Solution Approach 1:
The patent merges the decoration part with the display sheet, reducing the total component count and simplifying the manufacturing process. This integration reduces manufacturing costs by eliminating separate production and assembly steps for the decoration part, while still achieving the desired concealment of lower electrodes through the integrated decoration structure.
Data Source
AI summary
A touch panel includes first and second substrates, and first insulating layer disposed therebetween. The first substrate has, on its bottom surface, a first conductive layer having opposing first and second sides; a first electrode along the first side; and a second electrode along the second side. The second substrate has, on its top surface, a second conductive layer facing the first conductive layer with a predetermined space and having third and fourth sides orthogonal to the first and second sides: a third electrode along the third side; and a fourth electrode along the fourth side. The first insulating layer is frame-like and coats at least part of the first and second electrodes. The first and second electrodes and the first insulating layer together form a decoration part having a color tone to prevent the third and fourth electrodes from being visible when viewed from the first substrate side.