OGS Touch Panel Edge Etching via One-Time Film Lamination
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Solution Overview
Problem
Conventional OGS touch panel manufacturing processes face challenges such as high costs, low yield rates, and edge defects due to multiple film replacements and cutting difficulties, which lead to scratches, contamination, and fractures during the lamination and cutting of reinforced glass sheets.
Innovation Solution
A method involving one-time film lamination on a large glass sheet before cutting, where preservation zones and cutting zones are defined, allowing the films to be kept throughout the process for subsequent operations, enabling efficient edge etching and strengthening of small glass cells without repeated film replacements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple film replacements are performed during conventional manufacturing, then edge defects can be addressed, but manufacturing cost increases and yield rate decreases
Solution Approach 1:
The protective film is applied to the glass substrate before the strengthening process, allowing the film to protect the glass edges during subsequent cutting operations. This preliminary protection eliminates the need for multiple film replacements while maintaining edge quality, thereby improving manufacturing efficiency without sacrificing reliability
2Strength
If reinforced glass sheets are cut after strengthening, then edge strength is maintained, but cutting difficulty increases and tool wear increases
Solution Approach 1:
A protective film serves as an intermediary layer between the cutting tool and the reinforced glass substrate. This film reduces the friction and wear between the tool and the hard glass surface, making cutting easier and reducing tool wear, while the glass maintains its strengthened state underneath the film
3Object-affected harmful factors
If film replacement is performed multiple times, then contamination can be managed, but scratches and surface damages occur
Solution Approach 1:
The protective film remains continuously applied throughout the entire manufacturing process from strengthening through cutting to etching. This continuous protection eliminates the repeated removal and reapplication of films, preventing scratches and surface damages that occur during multiple film replacements while maintaining contamination control
4Ease of manufacture
If cutting is performed before strengthening, then cutting ease is maintained, but edge fractures and capillary cracks increase
Solution Approach 1:
The glass substrate is strengthened before the cutting operation. The protective film is applied in advance to protect the glass during this sequence reversal. This preliminary strengthening followed by cutting with film protection prevents edge fractures and capillary cracks while maintaining cutting ease, thereby improving edge integrity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method simplifies the manufacturing process, reduces the risk of damage and contamination, saves facility costs, and enhances the strength and smoothness of the glass edges by maintaining film lamination throughout the process.
Implementation Method 1
an upper lamination film and a lower lamination film are respectively laminated on surfaces of the large glass sheet... reduces the risk of damage and contamination
Implementation Method 2
Side edges of the small glass cells are then subjected to etching and strengthening... enhances the strength and smoothness of the glass edges
Implementation Method 3
The cutting zones of the upper lamination film and the lower lamination film are peeled off along the cut lines. Then, the large glass sheet is cut into a plurality of small glass cells along the cut lines
Data Source
AI summary
Disclosed is a method for carrying out edge etching and strengthening of an OGS (One-Glass-Solution) touch panel with one-time film lamination. After a prepared large glass sheet has been subjected to a first strengthening treatment, a plurality of touch control circuits and peripheral frames of black, white, or other colors associated with the touch control circuits are laid on a surface of the large glass sheet. Afterwards, an upper lamination film and a lower lamination film are respectively laminated on surfaces of the large glass sheet with a plurality of preservation zones and cutting zones defined therein and are subjected to film cutting to form cut lines. The cutting zones of the upper lamination film and the lower lamination film are peeled off along the cut lines. Then, the large glass sheet is cut into a plurality of small glass cells along the cut lines of the cutting zones. Side edges of the small glass cells are then subjected to etching and strengthening. During the etching and strengthening of the side edges, the small glass cells are also subjected to edge smoothening and edge flattening.