PHOTOSENSITIVE STRUCTURE, PHOTOSENSITIVE DISPLAY SUBSTRATE, AND FABRICATION AND CONTROL METHODS OF THE PHOTOSENSITIVE DISPLAY SUBSTRATE
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Abstract
The present disclosure provides a photosensitive structure, a photosensitive display substrate, and fabrication and control methods of the photosensitive display substrate. The photosensitive structure includes a first conductive layer; a second conductive layer; and a photoconductive material layer, sandwiched there-between. In response to a light illumination, the photoconductive material layer is capable of changing from an insulating state to a conductive state. One or more first constant voltage sources are configured in a periphery of the first conductive layer to charge the first conductive layer in different directions to maintain a first voltage there-on. Each current measurement unit is disposed between one first constant voltage source and the first conductive layer and configured to measure a charging current between the first constant voltage source and the first conductive layer, and configured to output current signals corresponding to the first constant voltage sources. A touch signal determination unit is connected to the current measurement units to determine a touch position.
6 Citations
45 Claims
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1-25. -25. (canceled)
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26. A photosensitive structure, comprising:
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a first conductive layer; a second conductive layer; a photoconductive material layer, sandwiched between the first conductive layer and the second conductive layer, wherein, in response to a light illumination, the photoconductive material layer is capable of changing from an insulating state to a conductive state; one or more first constant voltage sources, configured in a periphery of the first conductive layer to charge the first conductive layer in a plurality of different directions to maintain a first voltage on the first conductive layer; a plurality of current measurement units, each disposed between the first constant voltage source and the first conductive layer and each configured to measure a charging current between the first constant voltage source and the first conductive layer, wherein the plurality of current measurement units are configured to output a plurality of current signals corresponding to the one or more first constant voltage sources; and a touch signal determination unit, connected to the plurality of current measurement units to determine a touch position based on the plurality of current signals from the plurality of current measurement units. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A method of fabricating a photosensitive display substrate, comprising:
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forming a first conductive layer over a base substrate; forming a photoconductive material layer over the first conductive layer, the photoconductive material layer including meshes formed by a first plurality of photoconductive material lines and a second plurality of photoconductive material lines that are crossly configured, each mesh corresponding to a pixel cell; forming a color filter layer in the pixel cells; forming a second conductive layer over the color filter layer and over the photoconductive material layer; and forming a light-shielding layer over the second conductive layer to provide a projected area covering the first and second plurality of photoconductive material lines of the photoconductive material layer in a direction perpendicular to a surface of the base substrate.
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44. A control method in a photosensitive display device, the method comprising:
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providing the photosensitive structure including a first conductive layer, a second conductive layer, and a photoconductive material layer sandwiched by the first conductive layer and the second conductive layer; supplying power, by one or more first constant voltage sources configured in the periphery of the first conductive layer, to charge the first conductive layer in a plurality of different directions to maintain a first voltage on the first conductive layer; receiving a light illumination passing through one of the first and second conductive layers to have a light illuminated area in the photoconductive material layer; measuring a charging current between the first conductive layer and each of the more or more first constant voltage sources in response to the light illumination, by a plurality of current measurement units, to output a plurality of current signals corresponding to the one or more first constant voltage sources; and determining a touch position, by a touch signal determination unit connected to the plurality of current measurement units, based over the plurality of current signals. - View Dependent Claims (45)
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Specification