Touch-Sensing Liquid Crystal Panel with Low Sheet Resistance
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Solution Overview
Problem
Current touch-sensing liquid crystal panels with high sheet resistance in their sensing matrices require more power for operation, limiting their performance and efficiency.
Innovation Solution
A touch-sensing liquid crystal panel is fabricated using high temperature baking technology to form a sensing matrix with a sheet resistance of 30 ohm/square or less, combined with a slimming process to reduce the panel's thickness and weight, utilizing indium tin oxide (ITO) for the sensing matrix and incorporating a color filter and transistor substrates with a liquid crystal layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If high temperature baking technology is used to form a sensing matrix with lower sheet resistance, then power consumption is reduced and touch-sensing performance is improved, but manufacturing process complexity increases
Solution Approach 1:
The patent applies parameter changes by modifying the sheet resistance of the sensing matrix from high values to 30 ohm/square or less through high temperature baking treatment. This parameter change directly reduces power consumption while maintaining the touch-sensing function, resolving the contradiction between energy efficiency and performance.
2Weight of moving object
If a slimming process is applied to reduce panel thickness, then the panel becomes thinner and lighter, but structural strength may be compromised
Solution Approach 1:
The patent employs thin film technology by reducing the glass substrate thickness to below 0.2mm while maintaining structural integrity through optimized film stack design. This allows the panel to be thinner and lighter without compromising strength, as the multi-layer film structure provides necessary mechanical support.
3Reliability
If the sheet resistance of the sensing matrix is reduced to improve touch-sensing performance, then material cost increases due to higher ITO usage
Solution Approach 1:
The patent changes the sheet resistance parameter to 30 ohm/square or less through high temperature baking treatment rather than simply increasing ITO thickness. This approach achieves improved touch-sensing performance while controlling material consumption, as the parameter optimization occurs during processing rather than through increased material usage.
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
The solution results in a touch-sensing liquid crystal panel with improved performance, reduced power consumption, and a thinner, lighter design, enhancing operational efficiency and user convenience.
Implementation Method 1
The fabrication method uses high temperature baking technology to form a sensing matrix with lower electrical resistance
Implementation Method 2
The sensing matrix is formed from indium tin oxide (ITO), and the sensing matrix has a sheet resistance smaller than or equal to 30 ohm/square
Data Source
AI summary
A touch-sensing liquid crystal panel and a fabrication method thereof are provided. The touch-sensing liquid crystal panel includes a color filter substrate and a transistor substrate. In the fabrication method, at first, a first glass substrate is provided. Thereafter, a sensing matrix is formed on a first surface of the first glass substrate at a baking temperature. The sensing matrix is formed from indium tin oxide (ITO), and a sheet resistance of the sensing matrix is equal to or less than 30 ohm/square. Then, color filters and a common electrode are disposed on a second surface of the first glass substrate to form a color filter substrate, wherein the second surface is opposite to the first surface. Thereafter, the transistor substrate is provided and combined with the color filter substrate. Thereafter, a slimming process is performed to slim a second glass substrate of the transistor substrate.