US6373453B1
Expired / Lapsed
US
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Active matrix display
Assignee: Intellectual Keystone Technology LLC
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Filing: 1998-08-18
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Granted: 2002-04-16
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Expires: 2018-08-18
Abstract
Abstract An active matrix display device is provided in which parasitic capacitance or the like is suppressed by forming a thick insulating film around an organic semiconductor film, and disconnection or the like does not occur in an opposing electrode formed on the upper layer of the thick insulating film. In the active matrix display device, first, a bank layer composed of a resist film is formed along data lines and scanning lines. By depositing an opposing electrode of a thin film luminescent element on the upper layer side of the bank layer, capacitance that parasitizes the data lines can be suppressed. Additionally, a discontinuities portion is formed in the bank layer. Since the discontinuities portion is a planar section which does not have a step due to the existence of the bank layer, disconnection of the opposing electrode does not occur at this section. When an organic semiconductor film is formed by an ink jet process, a liquid material discharged from an ink jet head is blocked by the bank layer.
Inventors
- 👤 Ichio Yudasaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:37
CPC Classifications
G; G09; G09F; G09F9/00; G09F9/30; G09G; G09G3/00; G09G3/20; G09G3/22; G09G3/30; G09G3/32; G09G3/3208; G09G3/3225; H; H10; H10K; H10K59/00; H10K59/10; H10K59/12; H10K59/122; H10K59/131; G09G2300/00; G09G2300/04; G09G2300/0421; G09G2300/0426; G09G2300/0439; G09G2300/08; G09G2300/0809; G09G2300/0842; G09G2320/00; G09G2320/02; G09G2320/0223; H10K50/00; H10K50/80; H10K50/86; H10K50/865; H10K59/80; H10K59/8791; H10K59/8792; H10K71/00; H10K71/10; H10K71/12; H10K71/13; H10K71/135
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
162 words
An active matrix display device, comprising: a substrate; a display area on the substrate, the display area comprising a plurality of scanning lines extending in a first direction, a plurality of data lines extending in a second direction orthogonal to the first direction, and a plurality of pixels formed in a matrix by the data lines and the scanning lines, each of the pixels being provided with a thin film luminescent element comprising: a thin film transistor including a gate electrode to which scanning signals are supplied from the plurality of scanning lines, a pixel electrode, an organic semiconductor film deposited above the pixel electrode, and an opposing electrode formed above the organic semiconductor film; and an insulating film that bounds a region where the organic semiconductor film is disposed, the insulating film comprising a discontinuities portion having a planar section without a formed step, through which the opposing electrode is connected to an opposing electrode of an adjacent thin luminescent element.
Claim 2
Dependent Claim
162 words
An active matrix display device, comprising: a substrate; a display area on the substrate, the display area comprising a plurality of scanning lines extending in a first direction, a plurality of data lines extending in a second direction orthogonal to the first direction, and a plurality of pixels formed in a matrix by the data lines and the scanning lines, each of the pixels being provided with a thin film luminescent element comprising: a thin film transistor including a gate electrode to which scanning signals are supplied from the plurality of scanning lines, a pixel electrode, an organic semiconductor film deposited above the pixel electrode, and an opposing electrode formed above the organic semiconductor film; and an insulating film that bounds a region where the organic semiconductor film is disposed, the insulating film comprising a discontinuities portion having a planar section without a formed step, through which the opposing electrode is connected to an opposing electrode of an adjacent thin luminescent element.
Claim 3
Dependent Claim
83 words
The active matrix display device according to claim 1 , the thin film transistor being a first thin film transistor of a conduction control circuit, the conduction control circuit further comprising a second thin film transistor including a gate electrode connected to the data lines through the first thin film transistor, and the thin film luminescent element being driven by a driving current supplied from a common feeder formed independently of the data lines and the scanning lines that feeds a driving current.
Claim 4
Dependent Claim
43 words
The active matrix display device according to claim 1 , the insulating film preventing spreading of a liquid material discharged by an ink jet when the liquid material as a precursor of the organic semiconductor film is applied by the ink jet process.
Claim 5
Dependent Claim
21 words
The active matrix display device according to claim 3 , the insulating film having a thickness of 1 μm or more.
Claim 6
Dependent Claim
59 words
The active matrix display device according to claim 1 , at least one portion of the insulating film being formed along the data lines and the scanning lines, the insulating film being provided with the discontinuities portion between pixels in both the first direction of extension of the scanning lines and second direction of extension of the data lines.
Claim 7
Dependent Claim
49 words
The active matrix display device according to claim 1 , at least one portion of the insulating film being formed along the data lines and the scanning lines, the insulating film being provided with the discontinuities portion between pixels in the first direction of extension of the scanning lines.
Claim 8
Dependent Claim
49 words
The active matrix display device according to claim 1 , at least one portion of the insulating film being formed along the data lines and the scanning lines, the insulating film being provided with the discontinuities portion between pixels in the second direction of extension of the data lines.
Claim 9
Dependent Claim
40 words
The active matrix display device according to claim 1 , the insulating film being formed in a strip along the second direction of the data lines, the discontinuities portion being provided on at least one end in the second direction.
Claim 10
Dependent Claim
26 words
The active matrix display device according to claim 1 , a region in which the thin film transistor is formed being covered with the insulating film.
Claim 11
Dependent Claim
120 words
The active matrix display device according to claim 1 , further comprising a data-line driving circuit that supplies data signals through the data lines and a scanning-line driving circuit that supplies the scanning signals through the scanning lines in a periphery of the display area, the insulating film also being formed above the scanning-line driving circuit and the data-line driving circuit, and the insulating film comprising a discontinuities portion having a planar section without a formed step that connects opposing electrodes between a display area side and a substrate periphery side through the planar section at a position between a region in which the scanning-line driving circuit is formed and a region in which the data-line driving circuit is formed.
Claim 12
Dependent Claim
41 words
The active matrix display device according to claim 1 , the discontinuities being formed by insulating film having a thickness that is smaller than a thickness of the insulating film that bounds the region where the organic semiconductor film is disposed.
Claim 13
Dependent Claim
17 words
The active matrix display device according to claim 1 , the insulating film comprising an inorganic material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-04-15 | 2005-10-15 | 2006-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-04-15 | 2009-10-15 | 2010-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-04-15 | 2013-10-15 | 2014-04-16 | $7700.00 | Window Closed / Lapsed |