Grid Array Electromagnetic Induction Layer Integration
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Solution Overview
Problem
Existing electromagnetic touch display devices lack an internal electromagnetic induction layer, leading to inaccurate position and touch control due to external layer alignment offsets.
Innovation Solution
A grid array electromagnetic induction layer is integrated inside the display device on either the array substrate or color filter substrate, connected to a control circuit that includes X-axis and Y-axis loop coils and a high-frequency AC signal generator to detect the position of an electromagnetic stylus, eliminating the need for an external induction layer and enabling accurate touch control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an external electromagnetic induction layer is added at the back surface of the display device, then the display device can achieve electromagnetic touch function, but alignment offset occurs leading to inaccurate position control and touch control
Solution Approach 1:
The patent merges the electromagnetic induction layer with the display device structure by integrating it into either the array substrate or color filter substrate. This combination ensures that the induction layer and display elements are manufactured together in the same process, eliminating alignment offsets between separate layers while maintaining electromagnetic touch functionality.
2Adaptability or versatility
If an external electromagnetic induction layer is added at the back surface of the display device, then the display device can achieve electromagnetic touch function, but the structure becomes more complex and thicker
Solution Approach 1:
The patent combines the electromagnetic induction layer with existing display device substrates (array substrate or color filter substrate), merging multiple functions into a single integrated structure. This reduces the overall number of separate components and simplifies the device structure while maintaining electromagnetic touch capability.
Solution Approach 2:
The electromagnetic induction layer is nested within the display device structure by integrating it into the substrate layers. This nesting approach allows the induction functionality to be embedded within the existing display architecture rather than adding external components, reducing overall device complexity.
3Adaptability or versatility
If an external electromagnetic induction layer is added at the back surface of the display device, then the display device can achieve electromagnetic touch function, but the production cost increases
Solution Approach 1:
The patent merges the electromagnetic induction layer manufacturing with the display device manufacturing process. By integrating the induction layer into the substrate fabrication process, the patent eliminates the need for separate production steps and assembly operations, thereby reducing production costs while achieving electromagnetic touch functionality.
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 prevents alignment offsets, ensures accurate position and touch control, integrates electromagnetic signal processing, reduces system interfaces, and simplifies the structure, resulting in a thinner, lighter, and cost-effective product.
Implementation Method 1
a high-frequency AC signal generator and a position information detector. The high-frequency AC signal generator is connected to a second end of one or more Y-axis loop coils via the coil switch and configured to output an AC current to the Y-axis loop coils
Data Source
AI summary
The present disclosure provides an electromagnetic touch display device and a method for manufacturing the same. The electromagnetic touch display device includes a display device and an electromagnetic stylus. The display device includes an array substrate, a color filter substrate, a grid array electromagnetic induction layer and a control circuit. The grid array electromagnetic induction layer is arranged on the array substrate or the color filter substrate. The control circuit is connected to the grid array electromagnetic induction layer and configured to detect position information of the electromagnetic stylus on the grid array electromagnetic induction layer.