Magnetic Stylus Touch Panel Using Flexible Conductive Segments
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Reflective display panels with touch input functions face illumination attenuation and increased costs due to the use of transparent materials or complex non-contact sensing mechanisms, which can also risk damaging the display panel.
Innovation Solution
A touch panel design utilizing a magnetic stylus that applies a magnetic force to connect conductive segments, allowing for touch input without deforming the display panel and using cheaper plastics and metals, thereby reducing manufacturing costs and avoiding illumination attenuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transparent materials like glass or ITO are used for the touch module, then the touch input function is achieved, but illumination attenuation occurs degrading display brightness
Solution Approach 1:
The patent replaces the traditional transparent conductive material (glass/ITO) with a magnetic field-based sensing mechanism. The touch panel uses a flexible substrate with conductive patterns that generate and detect magnetic fields, eliminating the need for transparent materials and thus preventing illumination attenuation while maintaining touch input functionality.
Solution Approach 2:
The invention changes the fundamental operating parameter from optical transparency to magnetic field interaction. By using materials with specific magnetic properties (ferromagnetic or ferrimagnetic materials) instead of transparent conductive materials, the system achieves touch sensing through magnetic field modulation rather than optical properties, resolving the brightness degradation issue.
2Reliability
If non-contact mechanism like capacitive or optical sensing is employed, then the display panel is protected from damage, but the control circuit complexity increases
Solution Approach 1:
The patent replaces complex capacitive or optical sensing circuits with a simplified magnetic field-based detection system. The flexible substrate with conductive patterns generates magnetic fields that are directly modulated by touch input, eliminating the need for complex control circuits while still protecting the display panel through non-contact operation.
Solution Approach 2:
The magnetic field-based system is inherently self-regulating and requires minimal external control circuitry. The conductive patterns on the flexible substrate automatically generate and detect magnetic fields in response to touch, reducing the burden on control circuits compared to traditional capacitive or optical systems that require active sensing and processing.
3Reliability
If transparent materials like glass or ITO are used, then the touch module functions properly, but the manufacturing cost increases
Solution Approach 1:
The patent employs inexpensive flexible substrates made from plastics or polymers instead of expensive glass or ITO-coated materials. These flexible substrates can be manufactured using low-cost printing or deposition techniques, significantly reducing material and processing costs while maintaining touch module functionality through magnetic field interaction.
Solution Approach 2:
By changing the material parameter from expensive transparent conductive materials to inexpensive ferromagnetic or ferrimagnetic materials on flexible substrates, the invention achieves the same touch sensing function at a lower manufacturing cost. The magnetic field-based mechanism enables the use of cheaper materials that would not work with traditional optical sensing methods.
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 effectively maintains display brightness, prevents display panel damage during touch input, and lowers production costs by employing magnetic force-based touch input and cost-effective materials.
Implementation Method 1
one of the second conductive segments will be bent upward by a magnetic force to electrically connect with one of the first conductive segments when the magnetic stylus is applied thereto
Data Source
AI summary
A touch panel, operated by a magnetic stylus, including: a display panel, having a display plane and an interface plane, the interface plane underlying the display plane; and a sensing assembly, underlying the display panel, having a first conductive layer, a second conductive layer, and a plurality of insulating spacers, the first conductive layer underlying the interface plane, and the insulating spacers being placed between the first conductive layer and the second conductive layer to divide the first conductive layer and the second conductive layer into a plurality of first conductive segments and a plurality of second conductive segments respectively, wherein one of the second conductive segments will be bent upward by a magnetic force to electrically connect with one of the first conductive segments when the magnetic stylus is applied thereto.