Position detection sensor and position detection device
By arranging electromagnetic induction position detection sensors with multiple toroidal coils on the circular display screen, the problem that traditional rectangular sensors cannot effectively cover the circular display screen is solved, and high-precision position detection and efficient utilization of resources are achieved.
JP7664720B2Active Publication Date: 2025-04-18WACOM CO LTD
Patent Information
- Application Number
- JP2021041535
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-03-15
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2041-03-15
AI Technical Summary
Technical Problem
The prior art is difficult to effectively solve the problem of circular position detection sensors required for circular display screens, resulting in waste of invalid areas around traditional rectangular sensors.
Method used
A ring position detection sensor is designed, and an electromagnetic induction system is used to ensure that the detection area of the sensor is completely covered by the circular display screen by arranging a plurality of first and second directions on the annular substrate.
Benefits of technology
High-precision position detection is achieved, avoiding the waste of invalid areas in traditional rectangular sensors, and is suitable for circular displays and rocker input devices.
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Smart Images
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Abstract
To realize a circular position detection sensor of an electromagnetic induction type, and which functions with high accuracy.SOLUTION: A plurality of first loop coils X1-X8 are disposed on a circular substrate 10 in a first direction, and a plurality of second loop coils are disposed in a second direction that crosses the first direction. Each of the plurality of first loop coils comprises linear parts SL, S1, S2 extended in a direction that crosses the first direction and peripheral edges EG, E1, E2 along the outer edge of the circular substrate 10. Similarly, each of the plurality of second loop coils comprises linear parts extended in a direction that crosses the second direction and edges along the outer edge of the circular substrate.SELECTED DRAWING: Figure 2
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Citation Information
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