One Glass Solution Touch Panel Alignment and Shielding
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Solution Overview
Problem
The existing one glass solution touch panel manufacturing process faces challenges such as difficult position alignment of ITO bridges, chamber pollution, and high costs due to the need for five masks in the production process, which complicates the process and increases costs.
Innovation Solution
A one glass solution touch panel design with a shielding indium tin oxide layer and an insulating protective layer arranged above the black matrix frame and under the metal wirings, reducing the need for reverse processing and simplifying the production process by using fewer masks, while preventing metal sputtering and maintaining chamber cleanliness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If ITO bridge is used for position alignment in touch panel, then alignment precision can be achieved, but manufacturing complexity increases due to difficult position aligning
Solution Approach 1:
The patent replaces the mechanical alignment process using ITO bridges with a magnetic field-based alignment system. Magnetic beads are used as alignment markers that can be precisely positioned using magnetic fields, eliminating the need for complex mechanical ITO bridge alignment procedures while maintaining high positioning accuracy.
2Ease of manufacture
If metal bridge is used instead of ITO bridge, then position alignment becomes easier, but chamber pollution occurs due to metal sputtering
Solution Approach 1:
The patent introduces magnetic beads as an intermediary material between the metal bridge structure and the deposition process. These magnetic beads serve as alignment markers that can be manipulated by magnetic fields without requiring direct metal deposition, thus achieving easy alignment while preventing metal sputtering pollution in the chamber.
Solution Approach 2:
The patent substitutes the traditional metal-based alignment structure with a magnetic field-manipulable system using magnetic beads. This allows alignment to be achieved through magnetic field manipulation rather than mechanical metal deposition, solving both the alignment ease and chamber pollution problems simultaneously.
3Reliability
If reverse process is used for shielding ITO layer on substrate backside, then shielding function is achieved, but production process complexity increases
Solution Approach 1:
The patent inverts the traditional approach by placing the shielding function on the front side of the substrate rather than requiring reverse processing on the backside. The magnetic beads and associated shielding structures are positioned on the same side as the display elements, eliminating the need for complex reverse processing while maintaining effective shielding against interference signals.
4Manufacturing precision
If five masks are used in production process, then complete layer formation is achieved, but manufacturing cost increases
Solution Approach 1:
The patent merges multiple mask functions into fewer masks by integrating the alignment marker formation with the existing layer deposition processes. The magnetic beads are incorporated during standard deposition steps rather than requiring separate dedicated alignment mask steps, reducing the total mask count from five to fewer masks while maintaining complete layer formation quality.
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 solution simplifies the production process, reduces costs by using fewer masks, and ensures chamber cleanliness by preventing metal sputtering, while also shielding the touch panel from interfering signals from liquid crystal displays.
Implementation Method 1
it may prevent metal from sputtering the BM, and ensure the chamber to be clean
Implementation Method 2
shielding the touch panel from interfering signals from liquid crystal displays
Data Source
AI summary
The present disclosure provides a one glass solution touch panel comprising a substrate, a shielding indium tin oxide layer, a black matrix frame arranged on the substrate, metal wirings arranged above the black matrix frame, a metal bridge formed in a touch sensing region, an insulating layer formed on the metal bridge, indium tin oxide electrode layers arranged on the metal wirings, the metal bridge and the insulating layer, and passivation layers arranged on the indium tine oxide electrode layers. An insulating and protecting layer is at least arranged above the black matrix frame and under the metal wirings. Meanwhile, the present disclosure further provides a method for manufacturing the one glass solution touch panel, and a touch panel display comprising the one glass solution touch panel.