Touch Panel Assembling Frame Eliminates Wrapping Tapes
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Solution Overview
Problem
The conventional touch panel assembly process is cumbersome, leading to increased weight and cost due to the use of wrapping tapes and fixtures, and suffers from a high defective rate in the second stage sealant procedure between the sensor unit and the panel cell, resulting in sealant permeation or overflow.
Innovation Solution
A touch panel design that uses an assembling frame with protrusions to securely fasten the backlight module with the panel component, eliminating the need for additional fixing methods and reducing the complexity of the glue procedure, thereby enhancing the yield rate and reducing overall weight and manufacturing cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If wrapping tapes and fixtures are used to assemble the panel cell and backlight module, then the assembly process can be completed, but the overall weight and manufacturing cost increase
Solution Approach 1:
The patent removes the wrapping tapes and fixtures from the assembly process. The assembling frame integrates the functions of both the panel cell and backlight module assembly, eliminating the need for separate wrapping tapes and fixtures, thereby reducing weight while maintaining assembly capability.
Solution Approach 2:
The patent combines the assembly functions into a single integrating frame that holds both the panel cell and backlight module. This merging of functions eliminates multiple separate components (wrapping tapes, fixtures) and reduces overall weight while simplifying the manufacturing process.
2Ease of manufacture
If wrapping tapes and fixtures are used to assemble the panel cell and backlight module, then the assembly process can be completed, but the manufacturing cost increases
Solution Approach 1:
The patent eliminates wrapping tapes and fixtures from the assembly process by using an integrating frame that combines all necessary assembly functions into a single component, thereby reducing material costs and manufacturing complexity.
Solution Approach 2:
The integrating frame merges the assembly functions for both panel cell and backlight module into one unified structure, reducing the number of separate components and simplifying the manufacturing process, which directly reduces manufacturing cost.
3Reliability
If the second stage sealant procedure is performed between the sensor unit and the panel cell, then the components can be sealed, but bubbles, lack of sealant, and sealant permeation/overflow occur causing up to 30% defective rate
Solution Approach 1:
The patent applies sealant in the first stage when assembling the cover lens with the sensor unit, before the second stage assembly. This preliminary sealant application ensures proper sealing is established early, reducing the risk of bubbles, lack of sealant, or overflow in subsequent assembly steps.
Solution Approach 2:
The patent divides the sealant application into two distinct stages: first stage sealant procedure for assembling cover lens with sensor unit, and second stage for assembling the combined unit with panel cell. This segmentation allows controlled, staged sealant application that improves precision and reduces defects.
Data Source
AI summary
In a touch panel, a cover lens, a sensor unit, and a panel cell are assembled first via glue to form a panel component, where a concave portion is also formed at the side of the panel component. An assembling frame is used to extend into the concave portion and covering around the side and bottom of a backlight module so as to assemble the panel component with the backlight module. Wrapping tape and further fixtures that were used to combine the backlight module and the cell may be removed to reduce the overall cost of the touch panel, while the yield rate of the adhering process may be effectively promoted since the adhering process is done simply on glass components.