Touch sensor mechanism and manufacturing method thereof
First Claim
1. A touch sensor mechanism for a touch display device, comprising:
- a cover lens made by a transparent material having a dielectric constant greater than 4.5 and a compression strength greater than 700 MPa for generating a finger'"'"'s touching capacitance (CF) while a finger of a user touches thereon; and
a sensor device module including a plurality of sensor devices having a sensor parasitic capacitance (CP);
wherein the cover lens and the sensor device module are disposed in the touch display device in such a manner that a ratio of a standard deviation value (σ
U) of the finger'"'"'s touching capacitance (CF) of the cover lens to the sensor parasitic capacitance (CP) of the sensor device module defines a signal-to-noise ratio (SNR), and the signal-to-noise ratio (SNR) is adjusted along with the finger'"'"'s touching capacitance (CF) by reducing thickness of the cover lens.
1 Assignment
0 Petitions
Accused Products
Abstract
A touch sensor mechanism for a touch display device, includes a cover lens made by a transparent material having a dielectric constant greater than 4.5 and a compression strength greater than 700 MPa for generating a finger'"'"'s touching capacitance (CF) while a user'"'"'s finger of a user touch thereon; and a sensor device module including a plurality of sensor devices having a sensor parasitic capacitance (CP). The cover lens and the sensor device module are disposed in the touch display device in such a manner that a ratio of a standard deviation value (σU) of the finger'"'"'s touching capacitance (CF) of the cover lens to the sensor parasitic capacitance (CP) of the sensor device module is a signal-to-noise ratio (SNR). The SNR is adjusted along with the finger'"'"'s touching capacitance (CF) by reducing the thickness of the cover lens.
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Citations
10 Claims
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1. A touch sensor mechanism for a touch display device, comprising:
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a cover lens made by a transparent material having a dielectric constant greater than 4.5 and a compression strength greater than 700 MPa for generating a finger'"'"'s touching capacitance (CF) while a finger of a user touches thereon; and a sensor device module including a plurality of sensor devices having a sensor parasitic capacitance (CP); wherein the cover lens and the sensor device module are disposed in the touch display device in such a manner that a ratio of a standard deviation value (σ
U) of the finger'"'"'s touching capacitance (CF) of the cover lens to the sensor parasitic capacitance (CP) of the sensor device module defines a signal-to-noise ratio (SNR), and the signal-to-noise ratio (SNR) is adjusted along with the finger'"'"'s touching capacitance (CF) by reducing thickness of the cover lens. - View Dependent Claims (2, 3, 4, 5)
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6. A manufacturing method of a touch sensor mechanism for a touch display device, comprising the steps:
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preparing a cover lens made by a transparent material having a dielectric constant greater than 4.5 and a compression strength greater than 700 MPa for generating a finger'"'"'s touching capacitance (CF) while a finger of a user touches thereon; forming a sensor device module including a plurality of sensor devices having a sensor parasitic capacitance (CP); and assembling the cover lens, the sensor device module and a touch display module with the cover lens covering the sensor device module to form the touch display device; wherein the cover lens and the sensor device module are disposed in the touch display device in such a manner that a ratio of a standard deviation value (σ
U) of the finger'"'"'s touching capacitance (CF) of the cover lens to the sensor parasitic capacitance (CP) of the sensor device module defines a signal-to-noise ratio (SNR), and the signal-to-noise ratio (SNR) is adjusted along with the finger'"'"'s touching capacitance (CF) by reducing thickness of the cover lens. - View Dependent Claims (7, 8, 9, 10)
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Specification