Master-Slave Touch Detection Chip Cascade Architecture
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Solution Overview
Problem
Conventional touch screen detection chips require different designs for various screen sizes, leading to increased complexity, cost, and resource wastage, as larger screens necessitate more channels and larger ICs, making them difficult and costly to develop.
Innovation Solution
A cascade structure combining multiple touch screen detection chips, with a master detection chip controlling one or more slave detection chips to process touch signals across different regions of a touch screen, allowing for adaptable touch detection without altering the chip structure, reducing costs and improving compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If more detection channels are added to handle larger touch screens, then the detection coverage area increases, but the chip area and development complexity increase significantly
Solution Approach 1:
The patent divides the touch screen detection into multiple segments by using multiple detection chips, each responsible for a specific region. This segmentation allows the system to handle large screen areas without requiring a single overly complex chip, as each chip only needs to manage a portion of the total detection channels.
Solution Approach 2:
The patent merges multiple detection chips into a coordinated system where chips work together to cover the entire touch screen area. The master chip coordinates slave chips through control signals, combining their detection capabilities to achieve comprehensive coverage while distributing the complexity across multiple components.
2Adaptability or versatility
If different touch detection chips are designed for different screen sizes, then each chip can be optimized for its specific application, but the development time and resource consumption increase
Solution Approach 1:
The patent creates a universal detection chip design where the same basic chip structure can serve multiple screen sizes and configurations. The master chip design incorporates slave chip interfaces and control mechanisms that allow it to adapt to different detection requirements without requiring complete redesign, thus reducing development time and resources.
Solution Approach 2:
The patent introduces dynamic configuration capabilities where the master chip can dynamically control and coordinate slave chips based on the specific detection requirements. This dynamic approach allows the system to adapt to different screen sizes and detection channel requirements through software or control signal configuration rather than hardware redesign.
3Extent of automation
If a single large IC is used for large touch screens, then all detection functions can be integrated in one chip, but the timing design difficulty and production yield decrease significantly
Solution Approach 1:
The patent segments the detection functions across multiple chips rather than concentrating them all in one large IC. This segmentation reduces the complexity of timing design within each individual chip, making timing more manageable and improving production yield, while still achieving comprehensive detection functionality through the coordinated operation of multiple chips.
Solution Approach 2:
The patent introduces a master chip as an intermediary that coordinates the timing and operation of slave chips. This intermediary role allows for centralized timing control and synchronization across the distributed chip system, maintaining reliable operation without requiring all detection functions to be integrated in a single chip.
4Adaptability or versatility
If chips with more channels are used for small touch screens, then compatibility is maintained, but resource wastage occurs due to oversized chip capability
Solution Approach 1:
The patent applies partial action by using multiple simple detection chips instead of one oversized chip with excessive channels. Each chip handles only the necessary detection channels for its assigned region, avoiding resource wastage while maintaining compatibility through the modular architecture that can be scaled according to screen size requirements.
Data Source
AI summary
A touch screen detection chip combination includes a master detection chip and a slave detection chip. The master detection chip and the slave detection chip process touch signals of different regions of a touch screen. The master detection chip is connected to the slave detection chip, and the master detection chip controls the slave detection chip to perform touch signal process on the touch screen. A terminal device is further provided.