Touch Display Panel Insulating Film Thickness Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The complexity and increased thickness of touch display panels due to the repeated deposition of buffer and insulating films complicate the fabrication process and hinder the development of compact touch display devices.
Innovation Solution
The use of an insulating film on the encapsulating layer and touch sensor metals in data and touch pads simplifies the fabrication process and reduces the overall panel thickness by eliminating the need for a buffer layer and minimizing the height difference between data and touch pads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a buffer layer is deposited to protect data lines, then the data lines are protected from damage, but the fabrication process becomes more complicated and the panel thickness increases
Solution Approach 1:
The patent combines the buffer layer and insulating film into a single integrated layer structure. The insulating film serves dual purposes: protecting data lines during touch electrode fabrication (buffer function) and providing electrical insulation (insulating function). This merging eliminates the need for separate buffer layer deposition, simplifying the fabrication process while maintaining protection reliability.
Solution Approach 2:
The insulating film is designed to perform multiple functions simultaneously: it acts as a buffer layer protecting data lines from damage during subsequent fabrication steps, provides electrical insulation between conductive elements, and serves as a base layer for touch electrode formation. This multi-functionality reduces the overall number of layers and fabrication steps required.
2Reliability
If a buffer layer is deposited to protect data lines, then the data lines are protected from damage, but the overall panel thickness increases
Solution Approach 1:
The patent merges the buffer layer and insulating film into a single integrated structure, eliminating the need for separate buffer layer deposition. This consolidation reduces the cumulative thickness that would result from multiple discrete layers while maintaining the protective function against data line damage.
Solution Approach 2:
The patent extracts and eliminates the redundant buffer layer from the traditional multi-layer structure. By removing this separate protective layer and integrating its function into the insulating film, the overall panel thickness is reduced while the protection capability is preserved through the combined layer design.
3Shape
If touch sensor metals are used in data pad and touch pad, then the height difference between pads is reduced, but the fabrication process must ensure proper electrical connections
Solution Approach 1:
The patent applies different material properties to different regions: touch sensor metals are used specifically in the pad regions (data pad and touch pad) to reduce height difference and improve electrical connectivity, while other regions maintain their original layer structure. This localized application of materials optimizes the height profile where needed without compromising the overall fabrication process or electrical connection precision.
Data Source
AI summary
A touch display device and panel. In the display panel, an insulating film is provided on and in contact with an encapsulating layer, thereby reducing the entire thickness of the panel. The fabrication process of the touch display panel is simplified, thereby facilitating fabrication of the touch display device and panel.