Semiconductor device and method of manufacturing the same
First Claim
1. A semiconductor device comprising:
- a substrate having an insulating surface;
a light sensor element over the insulating surface; and
an amplifier circuit over the insulating surface, wherein the amplifier circuit comprises an n-channel TFT having a semiconductor film having a crystalline structure, and wherein the light sensor element includes a first electrode covering a top surface and a side surface of a wire connected to the n-channel TFT, a photoelectric conversion layer formed over a part of the wire and the first electrode and partially contacting the first electrode, and a second electrode formed over the photoelectric conversion layer.
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Accused Products
Abstract
[Abstract]Considering further promotion of high output and miniaturization of a sensor element, it is an object of the present invention to form a plurality of elements in a limited area so that an area occupied by the element is reduced for integration. It is another object to provide a process which improves the yield of a sensor element. According to the present invention, a sensor element using an amorphous silicon film and an output amplifier circuit constituted by a thin film transistor are formed over a substrate having an insulating surface. In addition, a metal layer for protecting an exposed wire when a photoelectric conversion layer of the sensor element is patterned is provided between the photoelectric conversion layer and the wire connected to the thin film transistor.
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Citations
42 Claims
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1. A semiconductor device comprising:
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a substrate having an insulating surface;
a light sensor element over the insulating surface; and
an amplifier circuit over the insulating surface, wherein the amplifier circuit comprises an n-channel TFT having a semiconductor film having a crystalline structure, and wherein the light sensor element includes a first electrode covering a top surface and a side surface of a wire connected to the n-channel TFT, a photoelectric conversion layer formed over a part of the wire and the first electrode and partially contacting the first electrode, and a second electrode formed over the photoelectric conversion layer. - View Dependent Claims (5, 7, 9, 13, 17, 21, 25, 29, 33)
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2. A semiconductor device comprising:
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a substrate having an insulating surface;
a thin film transistor over the insulating surface;
an interlayer insulating film over the thin film transistor;
a wire connected to the thin film transistor over the interlayer insulating film;
a first electrode over the wire;
a photoelectric conversion layer formed over a part of the wire and the first electrode and partially contacting the first electrode; and
a second electrode over the photoelectric conversion layer. - View Dependent Claims (6, 8, 10, 14, 18, 22, 26, 30, 34)
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3. A semiconductor device comprising:
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a substrate having an insulating surface;
a light sensor element over the insulating surface; and
an amplifier circuit over the insulating surface, wherein the amplifier circuit comprises an n-channel TFT having a semiconductor film having a crystalline structure, and wherein the light sensor element includes a wire connected to the n-channel TFT, a photoelectric conversion layer over the wire, and an electrode on the photoelectric conversion layer, and wherein an end portion of the electrode projects beyond an end portion of the photoelectric conversion layer. - View Dependent Claims (11, 15, 19, 23, 27, 31, 35)
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4. A semiconductor device comprising:
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a substrate having an insulating surface;
a light sensor element over the insulating surface;
an amplifier circuit over the insulating surface;
an interlayer insulating film over the thin film transistor;
a wire connected to the thin film transistor over the interlayer insulating film;
a photoelectric conversion layer formed over a part of the wire; and
an electrode over the photoelectric conversion layer, wherein an end portion of the electrode projects beyond an end portion of the n-type crystalline semiconductor layer. - View Dependent Claims (12, 16, 20, 24, 28, 32, 36)
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37. A manufacturing method of a semiconductor device comprising the steps of:
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forming a wire which connects to a thin film transistor constituting an amplifier circuit;
forming a first electrode which covers a top surface and a side surface of the wire;
forming a photoelectric conversion layer to cover the wire and the first electrode;
forming a second electrode over the photoelectric conversion layer by a printing method; and
etching the photoelectric conversion layer in a self-aligned manner using the second electrode as a mask. - View Dependent Claims (38, 39)
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40. A manufacturing method of a semiconductor device comprising the steps of:
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forming a wire which connects to a thin film transistor constituting an amplifier circuit;
forming a first electrode which covers a top surface and a side surface of the wire;
forming a photoelectric conversion layer to cover the wire and the first electrode;
forming a resist mask on the photoelectric conversion layer by a printing method;
etching the photoelectric conversion layer in a self-aligned manner using the resist mask as a mask;
removing the resist mask; and
forming a second electrode over the photoelectric conversion layer. - View Dependent Claims (41, 42)
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Specification