Touch Driving Circuit With Shift Register Load Transfer
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Solution Overview
Problem
Existing touch driving circuits for touch panels and display devices have high power consumption and rely heavily on integrated circuits for signal processing, which limits their efficiency and usage rate.
Innovation Solution
A touch driving circuit comprising an input subcircuit, a shift register subcircuit, an enable signal input subcircuit, and an output subcircuit, where the input subcircuit scans forward or backward signals at low electric levels, the shift register subcircuit generates output control signals, and the enable signal input subcircuit controls the output enable signal of the integrated circuit, reducing the circuit's reliance on the integrated circuit for signal processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the touch driving circuit relies heavily on integrated circuits for signal processing, then the signal processing capability is improved, but the power consumption increases and the usage rate of the integrated circuit becomes too high
Solution Approach 1:
The patent segments the signal processing function into two parts: the integrated circuit handles only the output enable signal, while the display screen handles the actual touch signal processing through its built-in shift register. This division reduces the workload and power consumption of the integrated circuit while maintaining signal processing capability.
Solution Approach 2:
The display screen performs self-service by using its own built-in shift register to process touch signals, eliminating the need for the integrated circuit to handle all signal processing tasks. This reduces the integrated circuit's usage rate and power consumption.
2Reliability
If the integrated circuit processes all touch signals, then the signal processing completeness is improved, but the usage rate of the integrated circuit increases, limiting efficiency
Solution Approach 1:
The patent segments the signal processing workflow so that the integrated circuit generates only the output enable signal, while the display screen's shift register completes the touch signal processing. This segmentation improves overall system efficiency by distributing tasks appropriately.
Solution Approach 2:
The display screen is designed to perform multiple functions: displaying images and processing touch signals. By utilizing the display screen's built-in shift register for touch signal processing, the system achieves multi-functionality without requiring the integrated circuit to handle all processing tasks.
3Reliability
If the touch driving circuit uses traditional integrated circuit-based signal processing, then the processing capability is improved, but the circuit complexity and power consumption increase
Solution Approach 1:
The patent extracts the shift register function from the integrated circuit and places it in the display screen. This extraction simplifies the integrated circuit's structure while maintaining processing capability, as the display screen's built-in shift register handles the signal shifting operation.
Data Source
AI summary
The present disclosure relates to a touch driving circuit, a touch panel and a display device. A touch driving circuit, comprising: an input subcircuit, configured to receive an input signal which scans forward or backward; a shift register subcircuit, configured to shift register the input signal to generate an output control signal; an enable signal input subcircuit, configured to control an output of the output enable signal of the integrated circuit according to the output control signal; and an output subcircuit, configured to output a corresponding output signal according to the output enable signal. An embodiment of the present disclosure realizes the touch driving circuit with reduced usage of the integrated circuit.