Photo detector array with thin-film resistor-capacitor network for use with a display device
First Claim
1. A photo detector device configured for use with a display device, the photo detector device comprising:
- a photosensitive transistor formed on a substrate of the display device, the photosensitive transistor being capable of detecting an optical signal and converting the optical signal into a current signal;
a converter formed on the substrate of the display device, the converter being capable of receiving the current signal on a first conductive line and converting the current signal into a voltage signal, the voltage signal being used to determine the position of an optical source, the converter comprising;
a first resistive device coupled between the first conductive line and a reference voltage line, wherein the first resistive device includes a first transistor, the first transistor including a gate coupled to the first conductive line, a drain coupled to the first conductive line, and a source coupled to the reference voltage line; and
a first capacitive device coupled in parallel with the first resistive device between the first conductive line and the reference voltage line.
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Accused Products
Abstract
A photo detector device configured for use with a display device, the photo detector device comprising a photosensitive transistor formed on a substrate of the display device, the photosensitive transistor being capable of detecting an optical signal and converting the optical signal into a current signal, and a converter formed on the substrate of the display device, the converter being capable of receiving the current signal on a first conductive line and converting the current signal into a voltage signal, the converter comprising a first resistive device coupled between the first conductive line and a reference voltage line, and a first capacitive device coupled in parallel with the first resistive device between the first conductive line and the reference voltage line.
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Citations
27 Claims
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1. A photo detector device configured for use with a display device, the photo detector device comprising:
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a photosensitive transistor formed on a substrate of the display device, the photosensitive transistor being capable of detecting an optical signal and converting the optical signal into a current signal; a converter formed on the substrate of the display device, the converter being capable of receiving the current signal on a first conductive line and converting the current signal into a voltage signal, the voltage signal being used to determine the position of an optical source, the converter comprising; a first resistive device coupled between the first conductive line and a reference voltage line, wherein the first resistive device includes a first transistor, the first transistor including a gate coupled to the first conductive line, a drain coupled to the first conductive line, and a source coupled to the reference voltage line; and a first capacitive device coupled in parallel with the first resistive device between the first conductive line and the reference voltage line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A photo detector device configured for use with a display device, the photo detector device comprising:
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a plurality of first conductive lines extending in parallel with each other; a plurality of second conductive lines extending in parallel with each other and being orthogonal to the plurality of first conductive lines; an array of photosensitive transistors formed on a substrate of the display device, each of the photosensitive transistors being disposed near one of the plurality of first conductive lines and one of the plurality of the second conductive lines and being capable of detecting an optical signal and converting the optical signal into a current signal; an array of converters formed on the substrate of the display device, each of the converters being capable of receiving the current signal on one of the first conductive lines, converting the current signal into a voltage signal, the voltage signal being used to determine the position of an optical source, and comprising; a first resistive device coupled between the first conductive line and a reference voltage line, wherein the first resistive device includes a first transistor, the first transistor including a gate coupled to the first conductive line, a drain coupled to the first conductive line, and a source coupled to the reference voltage line; and a first capacitive device coupled in parallel with the first resistive device between the first conductive line and the reference voltage line. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A photo detector device configured for use with a display device, the photo detector device comprising:
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a photosensitive transistor formed on a substrate of the display device, the photosensitive transistor being capable of detecting an optical signal and converting the optical signal into a current signal; a switching transistor formed on the substrate of the display device, the switching transistor being capable of driving the photosensitive transistor and being disposed near an intersection of a first conductive line and a second conductive line, the first conductive line and the second conductive line being orthogonal to one another; and a converter formed on the substrate of the display device, the converter being capable of receiving the current signal on the first conductive line and converting the current signal into a voltage signal, the voltage signal being used to determine the position of an optical source, the converter comprising; a first resistive device coupled between the first conductive line and a reference voltage line, wherein the first resistive device includes a first transistor, the first transistor including a gate coupled to the first conductive line, a drain coupled to the first conductive line, and a source coupled to the reference voltage line; and a first capacitive device coupled in parallel with the first resistive device between the first conductive line and the reference voltage line. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification