Wiring line and manufacture process thereof, and semiconductor device and manufacturing process thereof
First Claim
Patent Images
1. A portable telephone comprising:
- a voice output unit;
a voice input unit; and
a display unit,wherein the display unit comprises;
a semiconductor film formed over a substrate, the semiconductor film having a channel region, a source region and a drain region;
a gate insulating film over the semiconductor film; and
a gate electrode formed over the gate insulating film, the gate electrode having a multi-layered film comprising a first conductive layer, a second conductive layer on the first conductive layer, and a third conductive layer on the second conductive layer,wherein a width of the second conductive layer is smaller than those of the first and third conductive layers.
0 Assignments
0 Petitions
Accused Products
Abstract
To provide a technique for manufacturing a wiring line having a low resistance and a high heat resistance so as to make an active matrix type display device larger and finer. The wiring line is constructed of a laminated structure of a refractory metal, a low resistance metal and a refractory metal, and the wiring line is further protected with an anodized film. As a result, it is possible to form the wiring line having the low resistance and the high heat resistance and to form a contact with an upper line easily.
-
Citations
82 Claims
-
1. A portable telephone comprising:
-
a voice output unit; a voice input unit; and a display unit, wherein the display unit comprises; a semiconductor film formed over a substrate, the semiconductor film having a channel region, a source region and a drain region; a gate insulating film over the semiconductor film; and a gate electrode formed over the gate insulating film, the gate electrode having a multi-layered film comprising a first conductive layer, a second conductive layer on the first conductive layer, and a third conductive layer on the second conductive layer, wherein a width of the second conductive layer is smaller than those of the first and third conductive layers. - View Dependent Claims (2, 3, 4)
-
-
5. A portable book comprising:
-
a display unit; and a control switch, wherein the display unit comprises; a semiconductor film formed over a substrate, the semiconductor film having a channel region, a source region and a drain region; a gate insulating film over the semiconductor film; and a gate electrode formed over the gate insulating film, the gate electrode having a multi-layered film comprising a first conductive layer, a second conductive layer on the first conductive layer, and a third conductive layer on the second conductive layer, wherein a width of the second conductive layer is smaller than those of the first and third conductive layers. - View Dependent Claims (6, 7, 8)
-
-
9. A display device comprising:
-
a display unit, wherein the display unit comprises; a semiconductor film formed over a substrate, the semiconductor film having a channel region, a source region and a drain region; a gate insulating film over the semiconductor film; and a gate electrode formed over the gate insulating film, the gate electrode having a multi-layered film comprising a first conductive layer, a second conductive layer on the first conductive layer, and a third conductive layer on the second conductive layer, wherein a width of the second conductive layer is smaller than those of the first and third conductive layers. - View Dependent Claims (10, 11, 12)
-
-
13. A portable telephone comprising:
-
a voice output unit; a voice input unit; and a display unit, wherein the display unit comprises; a first wiring line including a multi-layered film comprising a first conductive layer, a second conductive layer on the first conductive layer and a third conductive layer on the second conductive layer; an insulating film covering the first wiring line; a second wiring line formed over the insulating him and electrically connected with the first wiring line; and a contact hole extending through the insulating film and the third conductive layer, wherein an upper surface of the second conductive layer is exposed at a bottom portion of the contact hole, and wherein the second wiring line is connected with the upper surface of second conductive layer though the contact hole. - View Dependent Claims (14, 15, 16, 17)
-
-
18. A portable telephone comprising:
-
a voice output unit; a voice input unit; and a display unit, wherein the display unit comprises; a first wiring line including a multi-layered film comprising a first conductive layer, a second conductive layer on the first conductive layer and a third conductive layer on the second conductive layer; an oxide film of The first, second and third conductive layers covering side surfaces and an upper surface of The first wiring line; an insulating film covering the oxide film; a second wiring line formed over the insulating film and electrically connected with the first wiring line; and a contact hole extending through the insulating film, the third conductive layer and the oxide film, wherein an upper surface of the second conductive layer is exposed at a bottom portion of the contact hole, and wherein the second wiring line is connected with the upper surface of second conductive layer through the contact hole. - View Dependent Claims (19, 20, 21, 22, 23)
-
-
24. A portable telephone comprising:
-
a voice output unit; a voice input unit; and a display unit, wherein the display unit comprises; a first wiring line including a multi-layered film comprising a first conductive layer, a second conductive layer on the first conductive layer and a third conductive layer on the second conductive layer; an insulating film formed over the first wiring line; a second wiring line formed over the insulating film and electrically connected with the first wiring line; and a contact hole extending through the insulating film and the third conductive layer, wherein an upper surface of the second conductive layer is exposed at a bottom portion of the contact hole, wherein the second wiring line is connected with the upper surface of second conductive layer though the contact hole, wherein an oxide film is formed on side surfaces of the second conductive layer, and wherein the second conductive layer has a width different from those of the first conductive layer and the third conductive layer. - View Dependent Claims (25, 26, 27, 28)
-
-
29. A portable telephone comprising:
-
a voice output unit; a voice input unit; and a display unit, wherein the display unit comprises; a p-channel thin film transistor formed over a substrate, the p-channel thin film transistor comprising; a first semiconductor layer having a first channel region, a first source region, and a first drain region; a first gate line footed over the first semiconductor layer with a first gate insulating film interposed therebetween, and an n-channel thin film transistor formed over the substrate, the n-channel thin film transistor comprising; a second semiconductor layer having a second channel region, a second source region, a second drain region, and at least one impurity region between the second channel region and the second source region; a second gate line formed over the second semiconductor layer with a second gate insulating film interposed therebetween; wherein the impurity region partly overlaps the second gate line with the second gate insulating film interposed therebetween, and wherein each of the first and second gate lines includes a multi-layered film comprising a first conductive layer in contact with each of the first and second gate insulating films, a second conductive layer on the first conductive layer and a third conductive layer on the third conductive layer, and wherein the impurity region has a lower impurity concentration than that of the second source region. - View Dependent Claims (30, 31, 32)
-
-
33. A portable book comprising:
-
a display unit; and a control switch, wherein the display unit comprises; a first wiring line including a multi-layered film comprising a first conductive layer, a second conductive layer on the first conductive layer and a third conductive layer on the second conductive layer; an insulating film covering the first wiring line; a second wiring line formed over the insulating film and electrically connected with the first wiring line; and a contact hole extending through the insulating film and the third conductive layer, wherein an upper surface of the second conductive layer is exposed at a bottom portion of the contact hole, and wherein the second wiring line is connected with the upper surface of second conductive layer through the contact hole. - View Dependent Claims (34, 35, 36, 37)
-
-
38. A portable book comprising:
-
a display unit; and a control switch, wherein the display unit comprises; a first wiring line including a multi-layered film comprising a first conductive layer, a second conductive layer on the first conductive layer and a third conductive layer on the second conductive layer; an oxide film of the first, second and third conductive layers covering side surfaces and an upper surface of the first wiring line; an insulating film covering the oxide film; a second wiring line formed over the insulating film and electrically connected with the first wiring line; and a contact hole extending through the insulating film, the third conductive layer and the oxide film, wherein an upper surface of the second conductive layer is exposed at a bottom portion of the contact hole, and wherein the second wiring line is connected with the upper surface of second conductive layer through the contact hole. - View Dependent Claims (39, 40, 41, 42, 43)
-
-
44. A portable book comprising:
-
a display unit; and a control switch, wherein the display unit comprises; a first wiring line including a multi-layered film comprising a first conductive layer, a second conductive layer on the first conductive layer and a third conductive layer on the second conductive layer; an insulating film formed over the first wiring line; a second wiring line formed over the insulating film and electrically connected with the first wiring line; and a contact hole extending through the insulating film and the third conductive layer, wherein an upper surface of the second conductive layer is exposed at a bottom portion of the contact hole, wherein the second wiring line is connected with the upper surface of second conductive layer through the contact hole, wherein an oxide film is formed on side surfaces of the second conductive layer, and wherein the second conductive layer has a width different from those of the first conductive layer and the third conductive layer. - View Dependent Claims (45, 46, 47, 48)
-
-
49. A portable book comprising:
-
a display unit; and a control switch, wherein the display unit comprises; a p-channel thin film transistor formed over a substrate, the p-channel thin film transistor comprising; a first semiconductor layer having a first channel region, a first source region, and a first drain region; a first gate line formed over the first semiconductor layer with a first gate insulating film interposed therebetween, and an n-channel thin film transistor formed over the substrate, the n-channel thin film transistor comprising; a second semiconductor layer having a second channel region, a second source region, a second drain region, and at least one impurity region between the second channel region and the second source region; a second gate line formed over the second semiconductor layer with a second gate insulating film interposed therebetween; wherein the impurity region partly overlaps the second gate line with the second gate insulating film interposed therebetween, and wherein each of the first and second gate lines includes a multi-layered film comprising a first conductive layer in contact with each of the first and second gate insulating films, a second conductive layer on the first conductive layer and a third conductive layer on the third conductive layer, and wherein the impurity region has a lower impurity concentration than that of the second source region. - View Dependent Claims (50, 51, 52)
-
-
53. A display device comprising:
a display unit, wherein the display unit comprises; a first wiring line including a multi-layered film comprising a first conductive layer, a second conductive layer on the first conductive layer and a third conductive layer on the second conductive layer; an insulating film covering the first wiring line; a second wiring line formed over the insulating film and electrically connected with the first wiring line; and a contact hole extending though the insulating film and the third conductive layer, wherein an upper surface of the second conductive layer is exposed at a bottom portion of the contact hole, and wherein the second wiring line is connected with the upper surface of second conductive layer through the contact hole. - View Dependent Claims (54, 55, 56, 57)
-
58. A display device comprising:
a display unit, wherein the display unit comprises; a first wiring line including a multi-layered film comprising a first conductive layer, a second conductive layer on the first conductive layer and a third conductive layer on the second conductive layer; an oxide film of the first, second and third conductive layers covering side surfaces and an upper surface of the first wiring line; an insulating film covering the oxide film; a second wiring line formed over the insulating film and electrically connected with the first wiring line; and a contact hole extending through the insulating film, the third conductive layer and the oxide film, wherein an upper surface of the second conductive layer is exposed at a bottom portion of the contact hole, and wherein the second wiring line is connected with the upper surface of second conductive layer through the contact hole. - View Dependent Claims (59, 60, 61, 62, 63)
-
64. A display device comprising:
a display unit, wherein the display unit comprises; a first wiring line including a multi-layered film comprising a first conductive layer, a second conductive layer on the first conductive layer and a third conductive layer on the second conductive layer; an insulating film formed over the first wiring line; a second wiring line formed over the insulating film and electrically connected with the first wiring line; and a contact hole extending through the insulating film and the third conductive layer, wherein an upper surface of the second conductive layer is exposed at a bottom portion of the contact hole, wherein the second wiring line is connected with the upper surface of second conductive layer through the contact hole, wherein an oxide film is formed on side surfaces of the second conductive layer, and wherein the second conductive layer has a width different from those of the first conductive layer and the third conductive layer. - View Dependent Claims (65, 66, 67, 68)
-
69. A display device comprising:
a display unit wherein the display unit comprises; a p-channel thin film transistor formed over a substrate, the p-channel thin film transistor comprising; a first semiconductor layer having a first channel region, a first source region, and a first drain region; a first gate line formed over the first semiconductor layer with a first gate insulating film interposed therebetween, and an n-channel thin film transistor formed over the substrate, the n-channel thin film transistor comprising; a second semiconductor layer having a second channel region, a second source region, a second drain region, and at least one impurity region between the second channel region and the second source region; a second gate line formed over the second semiconductor layer with a second gate insulating film interposed therebetween; wherein the impurity region partly overlaps the second gate line with the second gate insulating film interposed therebetween, and wherein each of the first and second gate lines includes a multi-layered film comprising a first conductive layer in contact with each of the first and second gate insulating films, a second conductive layer on the first conductive layer and a third conductive layer on the third conductive layer, and wherein the impurity region has a lower impurity concentration than that of the second source region. - View Dependent Claims (70, 71, 72)
-
73. A semiconductor device comprising:
-
a thin film transistor comprising a gate electrode, a gate insulating film over the gate electrode, a semiconductor layer over the gate insulating film; a first wiring line including the gate electrode, wherein the first wiring includes a multi-layered film comprising a first conductive layer, a second conductive layer on the first conductive layer and a third conductive layer on the second conductive layer; an insulating film covering the first wiring line; a second wiring line formed over the insulating film and electrically connected with the first wiring line; and a contact hole extending through the insulating film and the third conductive layer, wherein an upper surface of the second conductive layer is exposed at a bottom portion of the contact hole, and wherein the second wiring line is connected with the upper surface of second conductive layer through the contact hole. - View Dependent Claims (75, 76, 77)
-
-
74. A semiconductor device comprising:
-
a thin film transistor comprising a gate electrode, a gate insulating film over the gate electrode, a semiconductor layer over the gate insulating film; a first wiring line including the gate electrode, wherein the first wiring includes a multi-layered film comprising a first conductive layer, a second conductive layer on the first conductive layer and a third conductive layer on the second conductive layer; an insulating film formed over the first wiring line; a second wiring line formed over the insulating film and electrically connected with the first wiring line; and a contact hole extending through the insulating film and the third conductive layer, wherein an upper surface of the second conductive layer is exposed at a bottom portion of the contact hole, wherein the second wiring line is connected with the upper surface of second conductive layer through the contact hole, and wherein the second conductive layer has a width different from those of the first conductive layer and the third conductive layer. - View Dependent Claims (78, 79, 80, 81, 82)
-
Specification