Display device and electronic device
First Claim
Patent Images
1. A display device comprising:
- a pixel electrode;
a transistor electrically connected to the pixel electrode, the transistor comprising;
a light-transmitting semiconductor layer; and
a data line and a conductive layer over and in contact with the light-transmitting semiconductor layer;
a first insulating layer over and in contact with the light-transmitting semiconductor layer, a top surface of the data line, and a top surface of the conductive layer;
a second insulating layer over and in contact with the first insulating layer;
a scan line electrically connected to the transistor; and
a capacitor electrically connected to the transistor, the capacitor comprising an electrode and the pixel electrode,wherein the second insulating layer is over and in contact with the electrode,wherein the transistor and the scan line overlap with each other,wherein the electrode and the light-transmitting semiconductor layer are on a same surface,wherein a conductivity of the electrode is higher than a conductivity of the light-transmitting semiconductor layer,wherein the electrode and the light-transmitting semiconductor layer comprise In, Zn, and M,wherein M is a material selected from Al, Ga, Ge, Y, Zr, Sn, La, Ce, and Hf,wherein the pixel electrode extends to intersect with the scan line, andwherein each of the data line and the scan line has a linear shape without a convex portion.
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Abstract
A display device having fewer alignment defects is provided. A display device having a high aperture ratio and including a capacitor with increased charge capacity is provided. A display device having a high aperture ratio, including a capacitor with large charge capacity, and having fewer alignment defects is provided. The display device includes a pixel electrode, a transistor including a light-transmitting semiconductor layer connected to the pixel electrode, and a capacitor, a scan line, and a data line connected to the transistor. The transistor is arranged to overlap with the scan line. One of electrodes of the capacitor is formed on the same surface where the semiconductor layer is formed, and is formed in a region divided by the scan lines and the data lines. The other of the electrodes of the capacitor is a pixel electrode. The pixel electrode extends so as to intersect with the scan line.
152 Citations
27 Claims
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1. A display device comprising:
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a pixel electrode; a transistor electrically connected to the pixel electrode, the transistor comprising; a light-transmitting semiconductor layer; and a data line and a conductive layer over and in contact with the light-transmitting semiconductor layer; a first insulating layer over and in contact with the light-transmitting semiconductor layer, a top surface of the data line, and a top surface of the conductive layer; a second insulating layer over and in contact with the first insulating layer; a scan line electrically connected to the transistor; and a capacitor electrically connected to the transistor, the capacitor comprising an electrode and the pixel electrode, wherein the second insulating layer is over and in contact with the electrode, wherein the transistor and the scan line overlap with each other, wherein the electrode and the light-transmitting semiconductor layer are on a same surface, wherein a conductivity of the electrode is higher than a conductivity of the light-transmitting semiconductor layer, wherein the electrode and the light-transmitting semiconductor layer comprise In, Zn, and M, wherein M is a material selected from Al, Ga, Ge, Y, Zr, Sn, La, Ce, and Hf, wherein the pixel electrode extends to intersect with the scan line, and wherein each of the data line and the scan line has a linear shape without a convex portion. - View Dependent Claims (2, 3, 4, 14, 19, 22, 25)
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5. A display device comprising:
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a first substrate; a second substrate; a liquid crystal between the first substrate and the second substrate; a pixel electrode over the first substrate; a transistor electrically connected to the pixel electrode, the transistor comprising; a light-transmitting semiconductor layer; and a data line and a conductive layer over and in contact with the light-transmitting semiconductor layer; a first insulating layer over and in contact with the light-transmitting semiconductor layer, a top surface of the data line, and a top surface of the conductive layer; a second insulating layer over and in contact with the first insulating layer; a scan line electrically connected to the transistor; and a capacitor electrically connected to the transistor, the capacitor comprising an electrode and the pixel electrode, wherein the second insulating layer is over and in contact with the electrode, wherein the transistor and the scan line overlap with each other, wherein the electrode and the light-transmitting semiconductor layer are on a same surface, wherein the electrode and the light-transmitting semiconductor layer comprise In, Zn, and M, wherein M is a material selected from Al, Ga, Ge, Y, Zr, Sn, La, Ce, and Hf, wherein the pixel electrode extends to intersect with the scan line, and wherein each of the data line and the scan line has a linear shape without a convex portion. - View Dependent Claims (6, 7, 8, 15, 16, 20, 23, 26)
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9. A display device comprising:
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a first scan line; a second scan line; a data line; a capacitor line; a first pixel comprising; a first transistor electrically connected to the first scan line and the data line, the first transistor comprising; a first light-transmitting semiconductor layer; and the data line and a first conductive layer over and in contact with the first light-transmitting semiconductor layer; a first insulating layer over and in contact with the first light-transmitting semiconductor layer, a top surface of the data line, and a top surface of the first conductive layer; a second insulating layer over and in contact with the first insulating layer; a first pixel electrode electrically connected to the first transistor, wherein the first pixel electrode extends to intersect with the first scan line; and a first capacitor electrically connected to the capacitor line and the first transistor, the first capacitor comprising a first electrode and the first pixel electrode; and a second pixel adjacent to the first pixel, the second pixel comprising; a second transistor electrically connected to the second scan line and the data line, the second transistor comprising; a second light-transmitting semiconductor layer; and the data line and a second conductive layer over and in contact with the second light-transmitting semiconductor layer; a third insulating layer over and in contact with the second light-transmitting semiconductor layer, a top surface of the data line, and a top surface of the second conductive layer; a fourth insulating layer over and in contact with the third insulating layer; a second pixel electrode electrically connected to the second transistor, wherein the second pixel electrode extends to intersect with the second scan line; and a second capacitor electrically connected to the capacitor line and the second transistor, the second capacitor comprising a second electrode and the second pixel electrode, wherein the second insulating layer is over and in contact with the first electrode, wherein the fourth insulating layer is over and in contact with the second electrode, wherein the first electrode, the second electrode, the first light-transmitting semiconductor layer, and the second light-transmitting semiconductor layer are on a same surface, wherein a material of the capacitor line and a material of the first and second electrodes are different from each other, wherein the first electrode and the second electrode share a first layer, and wherein each of the data line, the first scan line, and the second scan line has a linear shape without a convex portion. - View Dependent Claims (10, 11, 12, 13, 17, 18, 21, 24, 27)
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Specification
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Current AssigneeSemiconductor Energy Laboratory Co., Ltd.
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Original AssigneeSemiconductor Energy Laboratory Co., Ltd.
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InventorsKubota, Daisuke
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Primary Examiner(s)Glick, Edward
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Assistant Examiner(s)Chung, David
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Application NumberUS14/249,531Publication NumberTime in Patent Office1,433 DaysField of Search349 38, 349 39, 349 43, 349110, 257 59, 257 72US Class CurrentCPC Class CodesG02F 1/136213 Storage capacitors associat...G02F 1/1368 in which the switching elem...G02F 2201/40 Arrangements for improving ...H01L 27/1225 with semiconductor material...H01L 27/124 with a particular compositi...H01L 27/1255 integrated with passive dev...
