Vehicle Touch Controller With Integrated Patterns for Fewer Input Errors
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Solution Overview
Problem
Existing vehicle switch integration technologies face challenges in reducing switch size, minimizing touch input errors, and controlling costs due to the need for separate input buttons and expensive components, while also experiencing increased touch failure rates and symbol recognition issues with integrated switches.
Innovation Solution
A vehicle integrated controller with an integrated touch pattern and changeover switch, utilizing an in-mold labeling film and mode-based determination logic to minimize touch regions and integrate touch ICs, and integrate separate touch ICs, reducing touch errors and symbol eccentricity, and enabling slim design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate input buttons for air conditioning and AVN functions are displayed, then function selection is clear and reliable, but the number of switches cannot be reduced and the controller cannot be slimmed down
Solution Approach 1:
The patent merges separate touch patterns for air conditioning and AVN functions into a single integrated touch pattern. The touch IC detects touch input at any position within this integrated pattern, and the controller determines the specific function based on the touched position and current operation mode, eliminating the need for separate physical buttons and reducing controller thickness.
Solution Approach 2:
The integrated touch pattern serves multiple functions by detecting touches at different positions within the same pattern area. The same touch IC and pattern structure handle both air conditioning and AVN function selections, making the system universal rather than requiring separate dedicated components for each function.
2Reliability
If multiple separate touch ICs are used for different functions, then each function has dedicated touch detection, but device complexity and production cost increase
Solution Approach 1:
A single touch IC is designed to handle multiple functions by detecting touch positions within the integrated pattern and identifying which function area was touched. The touch IC universally processes inputs for both air conditioning and AVN functions, eliminating the need for separate touch ICs and reducing device complexity.
Solution Approach 2:
The patent combines multiple touch detection functions into one touch IC by integrating the touch patterns and using a unified detection mechanism. The touch IC processes all function selections through a single component, reducing part count and simplifying the overall system architecture.
3Volume of moving object
If touch patterns are minimized to reduce switch size, then controller becomes more compact, but touch failure rate increases due to smaller detection area
Solution Approach 1:
The patent merges multiple function-specific touch patterns into one larger integrated touch pattern. This integration maintains a sufficiently large overall detection area for reliable touch input while enabling compact switch design, as the combined pattern covers multiple functions without requiring separate large areas for each.
Data Source
AI summary
A vehicle integrated controller includes: a board; an integrated pattern part positioned on the board; a touch integrated circuit (IC) part connected to the integrated pattern part to detect a change in a charge amount of the integrated pattern part; and a controller connected to the touch IC part and outputting an operation signal of a function corresponding to the change in a charge amount. A plurality of function patterns are arranged separately in the integrated pattern part. Each function pattern is configured to operate a plurality of different functions of a vehicle. The vehicle integrated controller may integrate switches having different functions with each other to display and implement the functions and may have a smaller overall size and a minimum number of touch input errors.