Acoustic touch sensor
First Claim
Patent Images
1. A touch sensor comprising:
- a substrate capable of propagating acoustic waves, the substrate including a first surface having a touch sensitive region; and
a transducer formed on the substrate, the transducer comprising a piezoelectric element being thermally cured after being formed on the substrate, the transducer being configured for at least one of generating acoustic waves and detecting acoustic waves.
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Abstract
A touch sensor comprises a substrate capable of propagating acoustic waves. The substrate includes a first surface having a touch sensitive region. A transducer is formed on the substrate. The transducer comprises a piezoelectric element which is thermally cured after being formed on the substrate. The transducer is configured for at least one of generating acoustic waves and detecting acoustic waves. Alternatively, the transducer may include a strip comprising the piezoelectric element.
100 Citations
20 Claims
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1. A touch sensor comprising:
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a substrate capable of propagating acoustic waves, the substrate including a first surface having a touch sensitive region; and
a transducer formed on the substrate, the transducer comprising a piezoelectric element being thermally cured after being formed on the substrate, the transducer being configured for at least one of generating acoustic waves and detecting acoustic waves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A touch sensor comprising:
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a substrate capable of propagating acoustic waves, the substrate including a first surface having a touch sensitive region; and
a transducer configured for at least one of generating acoustic waves and receiving acoustic waves, the transducer including a strip comprising a piezoelectric material, the strip being attached to the substrate. - View Dependent Claims (10, 11, 12)
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13. A method for forming a transducer on a touch sensor substrate, the substrate including a first surface having a touch sensitive region, the method comprising:
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applying a conductive layer to the substrate;
applying a piezoelectric layer to the substrate, the piezoelectric layer covering at least a portion of the first conductive layer; and
thermally curing the piezoelectric layer. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification