Master-Slave Touch IC Synchronization Reduces Wiring Complexity
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Solution Overview
Problem
The complexity and increased number of wiring lines in display devices due to the mounting of multiple touch ICs for different touch detection methods lead to complications in control and wiring, necessitating a solution to simplify and reduce the number of wiring lines.
Innovation Solution
A display device configuration where one touch IC operates as a master, driven by the driver IC, and outputs synchronization signals for other touch ICs, allowing these ICs to perform touch detection operations in a synchronized manner, reducing the need for individual control lines and simplifying the control process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple touch ICs are mounted for different touch detection methods, then touch detection capability is improved, but the number of wiring lines increases and control becomes complicated
Solution Approach 1:
The patent merges the synchronization signal generation function into a single master touch IC, which then distributes synchronization signals to multiple slave touch ICs. This consolidates control functionality into one component, reducing the overall wiring complexity while maintaining support for multiple touch detection methods across multiple ICs.
Solution Approach 2:
The master touch IC acts as an intermediary between the driver IC and multiple slave touch ICs. It receives the synchronization signal from the driver IC and redistributes it to the slave ICs, eliminating the need for separate control lines from the driver IC to each touch IC and simplifying the control architecture.
2Ease of operation
If one-on-one communication is implemented between driver IC and each touch IC, then individual control is achieved, but the number of control lines increases
Solution Approach 1:
The master touch IC performs multiple functions: it serves as a slave IC for touch detection while simultaneously acting as a master IC that generates and distributes synchronization signals to other slave ICs. This multi-functionality allows individual control of multiple touch ICs through a single intermediary component, reducing the total number of control lines required.
Solution Approach 2:
The patent combines the control functions for multiple touch ICs into a single master touch IC. Instead of having separate control lines from the driver IC to each touch IC, all control signals are routed through the master IC, which then manages the slave ICs. This merging of control functions significantly reduces the number of wiring lines while preserving individual control capability.
Data Source
AI summary
A display device according to an aspect of the present invention includes a display panel, a driver IC configured to perform image display on the display panel, and a plurality of touch ICs. One of the touch ICs is configured to be driven based on a synchronization signal that is output from the driver IC, and output a synchronization signal for another touch IC. The other touch IC is configured to be driven based on a synchronization signal that is output from the one touch IC.