DEVICE AND METHOD FOR DETECTING POSITION OF OBJECT AND IMAGE DISPLAY SYSTEM HAVING SUCH DEVICE
First Claim
1. An object position detecting device for detecting a position of an object, the object position detecting device comprising:
- a touch film;
a first electrode set disposed under the touch film and including multiple first electrodes that are parallel with each other and run in a first direction, wherein at least one of the first electrodes is subject to a capacitance change when the object approaches the touch film, the first electrodes of the first electrode set are divided into multiple first electrode groups, and each first electrode group includes more than one of the first electrodes that are parallel with and connected with each other;
a second electrode set disposed under the touch film and including multiple second electrodes that are parallel with each other and run in a second direction, wherein at least one of the second electrodes is subject to a capacitance change when the object approaches the touch film, the second electrodes of the second electrode set are divided into multiple second electrode groups, and each second electrode group includes more than one of the second electrodes that are parallel with and connected with each other; and
a sensing and computing circuit electrically connected to the first electrode set and the second electrode set for sensing first equivalent capacitance values of the first electrode groups and second equivalent capacitance values of the second electrode groups, and calculating first position information of the object according to the first equivalent capacitance values and the second equivalent capacitance values.
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Accused Products
Abstract
An object position detecting device includes a touch film, a first electrode set, a second electrode set, and a sensing and computing circuit. An object position detecting method includes the following steps. Firstly, an object is provided on the touch film. Then, first equivalent capacitance values of multiple first electrode groups of a first electrode set under the touch film are sensed, wherein each first electrode group includes n adjacent first electrodes that are parallel with and connected with each other. Then, second equivalent capacitance values of multiple second electrode groups of a second electrode set under the touch film are sensed, wherein each second electrode group includes m adjacent second electrodes that are parallel with and connected with each other. According to the first equivalent capacitance values and the second equivalent capacitance values, first position information of the object is calculated.
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Citations
14 Claims
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1. An object position detecting device for detecting a position of an object, the object position detecting device comprising:
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a touch film; a first electrode set disposed under the touch film and including multiple first electrodes that are parallel with each other and run in a first direction, wherein at least one of the first electrodes is subject to a capacitance change when the object approaches the touch film, the first electrodes of the first electrode set are divided into multiple first electrode groups, and each first electrode group includes more than one of the first electrodes that are parallel with and connected with each other; a second electrode set disposed under the touch film and including multiple second electrodes that are parallel with each other and run in a second direction, wherein at least one of the second electrodes is subject to a capacitance change when the object approaches the touch film, the second electrodes of the second electrode set are divided into multiple second electrode groups, and each second electrode group includes more than one of the second electrodes that are parallel with and connected with each other; and a sensing and computing circuit electrically connected to the first electrode set and the second electrode set for sensing first equivalent capacitance values of the first electrode groups and second equivalent capacitance values of the second electrode groups, and calculating first position information of the object according to the first equivalent capacitance values and the second equivalent capacitance values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An object position detecting method for use with an object position detecting device, the object position detecting device including a touch film, a first electrode set and a second electrode set, the object position detecting method comprising steps of:
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sensing first equivalent capacitance values of multiple first electrode groups of a first electrode set under the touch film when an object is provided on the touch film, wherein each first electrode group includes more than one of the first electrodes that are parallel with and connected with each other; sensing second equivalent capacitance values of multiple second electrode groups of a second electrode set under the touch film, wherein each second electrode group includes more than one of the second electrodes that are parallel with and connected with each other; and calculating first position information of the object according to the first equivalent capacitance values and the second equivalent capacitance values. - View Dependent Claims (12, 13, 14)
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Specification