Touch Panel Upper Sheet Extension for Connector Reliability
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Solution Overview
Problem
The existing flat display devices unified with touch panels suffer from reliability issues due to a narrow contact area between the connector and the touch panel, leading to frequent connection defects, especially during assembly, which can be exacerbated by mechanical shocks.
Innovation Solution
The flat display device design extends the upper sheet of the touch panel to the driver area of the liquid crystal display panel, increasing the contact area between the first connector and the touch panel, and includes an insulation member to enhance the combining force, thereby improving the reliability of the electrical connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the contact area between the connector and the touch panel is narrowed, then the device complexity is reduced, but the reliability of electrical connection deteriorates
Solution Approach 1:
The touch panel is segmented into a display area and a driver area, with the upper sheet extending to the driver area to provide a separate connection region. This segmentation allows the connector to be positioned in the driver area rather than competing with the display area, thereby increasing the contact area for electrical connection without complicating the overall device structure.
Solution Approach 2:
The upper sheet of the touch panel is extended beyond the display area into the driver area, utilizing the spatial dimension of the driver area for connector placement. This dimensional extension provides additional space for the connector to make contact with the touch panel, increasing the contact area without adding complexity to the display structure itself.
2Reliability
If the contact area between the connector and the touch panel is increased, then the reliability of electrical connection is improved, but the device complexity increases
Solution Approach 1:
The upper sheet of the touch panel is merged with the driver area of the liquid crystal display panel, creating a unified structure where the touch panel and display panel share the same space. This merging allows the connector to contact both the touch panel and the driver area simultaneously, increasing the contact area and electrical connection reliability without adding separate components or increasing device complexity.
3Reliability
If the combining force between the connector and the touch panel is intensified, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The connector is positioned to simultaneously contact the upper sheet of the touch panel and the driver area of the liquid crystal display panel, merging the connection function into a single integrated contact point. This merging provides both mechanical support and electrical connection through the same structure, intensifying the combining force without adding complex fastening mechanisms or additional components.
Data Source
AI summary
A flat display device unified with a touch panel which is adaptive to improve its reliability is disclosed. The flat display device unified with touch panel includes: a liquid crystal display panel having a color filter substrate and a thin film transistor substrate; and the touch panel disposed on the liquid crystal display panel. The touch panel includes: an upper sheet extended to oppose to a driver area of the liquid crystal display panel; a first transparent conduction film formed on the upper sheet; a second transparent conduction film formed on the color filter substrate of the liquid crystal display panel; and a connector connected to the upper sheet.