EL display panel, EL display apparatus, and method of manufacturing EL display panel
First Claim
Patent Images
1. An Electro Luminescence (EL) display panel comprising:
- an EL unit; and
a thin film semiconductor unit configured to control luminescence at said EL unit,wherein said EL unit includes;
an anode electrode;
a cathode electrode; and
a light-emitting layer interposed between said anode electrode and said cathode electrode,said thin film semiconductor unit includes;
a substrate;
a gate electrode formed above said substrate;
a gate insulating film formed above said substrate to cover said gate electrode;
a semiconductor layer formed on said gate insulating film and above said gate electrode;
a first electrode formed above said semiconductor layer;
a second electrode formed in a same layer as said first electrode;
an interlayer insulating film formed (i) above said gate insulating film to cover said first electrode and said second electrode, and (ii) in a layer different from a layer in which said gate electrode is formed;
a gate line formed above said interlayer insulating film;
a power supply line formed above said interlayer insulating film on which said gate line is formed, in a same layer as said gate line, and side-by-side with said gate line; and
an auxiliary line formed above said interlayer insulating film, in a same layer as said gate line and said power supply line, and side-by-side with said gate line and said power supply line, andsaid gate electrode and said gate line are electrically connected via a first conductive portion passing through said gate insulating film and said interlayer insulating film,one of said first electrode and said second electrode is electrically connected to said power supply line via a second conductive portion passing through said interlayer insulating film, andsaid auxiliary line is electrically connected to said cathode electrode.
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Abstract
An EL display panel including an EL unit and a thin film semiconductor unit, in which the EL unit includes an anode electrode, a cathode electrode, and a light-emitting layer, and the thin film semiconductor unit includes a substrate, a gate electrode, a gate insulating film, a semiconductor layer, a first electrode, a second electrode, an interlayer insulating film, a gate line formed above the interlayer insulating film, a power supply line formed above the interlayer insulating film, in a same layer as the gate line, and side-by-side with the gate line, and an auxiliary line formed above the interlayer insulating film, in a same layer as the gate line and the power supply line, and side-by-side with the gate line and the power supply line.
23 Citations
16 Claims
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1. An Electro Luminescence (EL) display panel comprising:
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an EL unit; and a thin film semiconductor unit configured to control luminescence at said EL unit, wherein said EL unit includes; an anode electrode;
a cathode electrode; and
a light-emitting layer interposed between said anode electrode and said cathode electrode,said thin film semiconductor unit includes; a substrate; a gate electrode formed above said substrate; a gate insulating film formed above said substrate to cover said gate electrode; a semiconductor layer formed on said gate insulating film and above said gate electrode; a first electrode formed above said semiconductor layer; a second electrode formed in a same layer as said first electrode; an interlayer insulating film formed (i) above said gate insulating film to cover said first electrode and said second electrode, and (ii) in a layer different from a layer in which said gate electrode is formed; a gate line formed above said interlayer insulating film; a power supply line formed above said interlayer insulating film on which said gate line is formed, in a same layer as said gate line, and side-by-side with said gate line; and an auxiliary line formed above said interlayer insulating film, in a same layer as said gate line and said power supply line, and side-by-side with said gate line and said power supply line, and said gate electrode and said gate line are electrically connected via a first conductive portion passing through said gate insulating film and said interlayer insulating film, one of said first electrode and said second electrode is electrically connected to said power supply line via a second conductive portion passing through said interlayer insulating film, and said auxiliary line is electrically connected to said cathode electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of manufacturing an EL display panel, comprising:
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a first process of preparing a substrate; a second process of forming a gate electrode above the substrate; a third process of forming a gate insulating film above said substrate to cover the gate electrode; a fourth process of forming a semiconductor layer on the gate insulating film and above the gate electrode; a fifth process of forming a first electrode above the semiconductor layer and forming a source line electrically connected to the first electrode, and a second electrode; a sixth process of forming a first interlayer insulating film above the gate insulating film to cover the first electrode and the second electrode; a seventh process of forming a first contact hole through the gate insulating film and the first interlayer insulating film; an eighth process of forming a second contact hole through the first interlayer insulating film, the second contact hole passing through the first interlayer insulating film above the gate electrode and being different from the first contact hole; a ninth process of forming, by forming a metal film on the first interlayer insulating film and patterning the metal film, (i) a gate line electrically connected to the gate electrode through the first contact hole, (ii) a power supply line electrically connected to the first electrode or the second electrode through the second contact hole and side-by-side with the gate line, and (iii) an auxiliary line side-by-side with the gate line and the power supply line and electrically connected to the cathode electrode; a tenth process of forming a second interlayer insulating film to cover upper surfaces of the first interlayer insulating film, the power supply line, and the auxiliary line; an eleventh process of forming a third contact hole through the second interlayer insulating film; and a twelfth process of forming, above the second interlayer insulating film, an EL unit including a pair of an anode electrode and a cathode electrode, and a light-emitting layer interposed between the anode electrode and the cathode electrode, wherein, in said twelfth process, the cathode electrode and the auxiliary line are electrically connected through the third contact hole. - View Dependent Claims (15, 16)
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Specification
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Current AssigneeJDI Design and Development GK
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Original AssigneePanasonic Corporation (Panasonic Holdings Corporation)
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InventorsKanegae, Arinobu
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Primary Examiner(s)Patel, Ashok
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Application NumberUS13/281,691Publication NumberTime in Patent Office335 DaysField of SearchNoneUS Class Current313/498CPC Class CodesH10K 59/131 Interconnections, e.g. wiri...
