Carbon Nanotube Touch Panel Alignment
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Solution Overview
Problem
Current touch panels, particularly those using indium tin oxide (ITO) layers, suffer from poor wearability, low chemical endurance, uneven resistance, and low transparency, which impair sensitivity, accuracy, and brightness, limiting their reliability and visibility in electronic devices.
Innovation Solution
The use of carbon nanotube-based conductive layers in touch panels, which provide high transparency, mechanical strength, and uniform conductivity, along with strategically aligned carbon nanotube films to improve resolution and display quality by eliminating irregular images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ITO layer is used as conductive layer in touch panel, then conductivity is achieved, but transparency is reduced and wearability is poor
Solution Approach 1:
The patent changes the material parameters from ITO to carbon nanotubes, which have different electrical and optical properties. Carbon nanotubes achieve the required conductivity with much lower optical absorption, thereby improving transparency while maintaining wearability
Solution Approach 2:
The patent uses carbon nanotube films as a composite material alternative to ITO. The carbon nanotube network structure provides both mechanical strength and electrical conductivity while maintaining high optical transparency, resolving the contradiction between wearability and transparency
2Reliability
If ITO layer is used as conductive layer, then conductivity is provided, but resistance uniformity is poor
Solution Approach 1:
The patent changes the conductive material from ITO to carbon nanotubes, which naturally form a more uniform resistance distribution across the panel surface. The nanotube network structure ensures consistent electrical properties throughout the entire touch panel area
Solution Approach 2:
The carbon nanotube film replicates the conductive function of ITO but with superior uniformity characteristics. The manufacturing process creates a consistent nanotube network that copies the required electrical behavior more uniformly across the entire panel
3Manufacturing precision
If carbon nanotube films are aligned strategically, then resolution and display quality are improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary alignment of carbon nanotube films during the manufacturing process. By pre-aligning the nanotube orientation before final assembly, the system achieves high resolution and display quality without requiring complex real-time adjustment mechanisms
Solution Approach 2:
The patent controls the orientation parameter of carbon nanotubes during film deposition or assembly. By adjusting the alignment degree and direction of nanotubes, the system optimizes resolution and display quality while managing manufacturing complexity through controlled parameter variation
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 carbon nanotube-based touch panels enhance the brightness, durability, and conductivity of the panels, leading to improved resolution and display quality by reducing irregular images and providing superior mechanical strength.
Implementation Method 1
carbon nanotube-based conductive layers in touch panels, which provide high transparency, mechanical strength, and uniform conductivity
Implementation Method 2
carbon nanotube-based conductive layers in touch panels, which provide high transparency
Implementation Method 3
carbon nanotube-based conductive layers in touch panels, which provide high transparency
Data Source
AI summary
A display device includes a display element and a touch panel including a first electrode plate and a second electrode plate. The first electrode plate includes a first conductive layer and two first electrodes electrically connected to the first conductive layer. The second electrode plate includes a second conductive layer and two second electrodes electrically connected to the second conductive layer. The display element includes a plurality of pixels arranged in rows and columns along a first direction and a second direction. At least one of the first conductive layer and the second conductive layer includes a plurality of carbon nanotubes arranged primarily along the same aligned direction. The aligned direction and the second direction define an angle ranging from above 0° to less than or equal to 90°.