Pixel Sensor Touch Resolution Circuit Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing demand for high-resolution touch experiences in electronic devices complicates circuit design and increases costs due to the need for more touch ICs and complex wiring configurations.
Innovation Solution
An electronic device with a signal readout line and a sensor component that includes a pixel sensor with transistors and capacitors, allowing for high touch sensitivity by adjusting the capacitance ratio of the capacitors, thereby reducing the number of required signal lines and simplifying the circuit design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a larger number of touch ICs and more complex wiring configuration are used to achieve high-resolution touch experience, then touch resolution is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines the touch sensing function with the display pixel structure by integrating touch sensors into the pixel electrodes. This merging of functions allows the display pixels to serve dual purposes: displaying images and detecting touch inputs, thereby achieving high touch resolution without requiring separate touch ICs and complex wiring configurations for each pixel.
Solution Approach 2:
The pixel electrode structure is designed to perform multiple functions simultaneously: it serves as both the display element and the touch sensing element. By making the pixel electrode capable of both displaying and touch detection, the patent eliminates the need for dedicated touch sensing components, thus reducing device complexity while maintaining high touch resolution.
2Measurement precision
If a larger number of touch ICs and more complex wiring configuration are used to achieve high-resolution touch experience, then touch resolution is improved, but manufacturing cost increases
Solution Approach 1:
By merging the touch sensing function into the existing pixel electrode structure, the patent eliminates the need for separate touch ICs and complex wiring. This reduces the number of components that need to be manufactured and assembled, thereby lowering manufacturing costs while achieving high touch resolution.
Solution Approach 2:
The multi-functional pixel electrode design allows a single structure to serve both display and touch sensing purposes. This universality reduces the bill of materials and simplifies the manufacturing process, making high-resolution touch functionality more cost-effective to produce.
3Measurement precision
If more signal lines are used to achieve high touch sensitivity, then touch sensitivity is improved, but device complexity increases
Solution Approach 1:
The patent merges the signal lines used for driving the display pixels with the signal lines used for reading touch sensor signals. By utilizing the same pixel electrode and control circuitry for both display driving and touch signal reading, the patent achieves high touch sensitivity without requiring additional dedicated signal lines, thus avoiding increased wiring complexity.
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 achieves high touch sensitivity and resolution while reducing the complexity and cost of the circuit structure, enabling efficient and cost-effective high-resolution touch functionality.
Implementation Method 1
high touch sensitivity by adjusting the capacitance ratio of the capacitors
Data Source
AI summary
An electronic device includes a signal readout line and a sensor component electrically connected to the signal readout line. The sensor component includes a pixel sensor and a sensor pad. The pixel sensor includes a first transistor, a first capacitor and a second transistor. The first transistor includes a first terminal, a second terminal, and a first control terminal. The first capacitor is electrically connected to the first control terminal and the second terminal. The second transistor includes a third terminal, a fourth terminal and a second control terminal. The fourth terminal is electrically connected to the signal readout line. The sensor pad is electrically connected to the second terminal. The pixel sensor includes a third transistor including a fifth terminal, a sixth terminal and a third control terminal. The third control terminal is electrically connected to the second terminal. The sixth terminal is electrically connected to the third terminal.