Patent US6052162A successfully refreshed from Google Patents.
US6052162A
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Transmission type liquid crystal display device with connecting electrode and pixel electrode connected via contact hole through interlayer insulating film and method for fabricating
Assignee: Sharp Corp
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Filing: 1996-08-12
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Granted: 2000-04-18
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Expires: 2016-08-12
Abstract
Abstract The transmission type liquid crystal display device of this invention includes: gate lines; source lines; and switching elements each arranged near a crossing of each gate line and each source line, a gate electrode of each switching element being connected to the gate line, a source electrode of the switching element being connected to the source line, and a drain electrode of the switching element being connected to a pixel electrode for applying a voltage to a liquid crystal layer, wherein an interlayer insulating film formed of an organic film with high transparency is provided above the switching element, the gate line, and the source line, and wherein the pixel electrode formed of a transparent conductive film is provided on the interlayer insulating film.
Inventors
- 👤 Takayuki Shimada
- 👤 Masaru Kajitani
- 👤 Masaya Okamoto
- 👤 Naofumi Kondo
- 👤 Mikio Katayama
- 👤 Yoshikazu Sakuhana
- 👤 Akihiro Yamamoto
- 👤 Yukinobu Nakata
- 👤 Hirohiko Nishiki
- 👤 Yoshinori Shimada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:37
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/136227; G02F1/1333; G02F1/133345; G02F1/136213; H; H10; H10D; H10D30/00; H10D30/60; H10D30/67; G02F1/13606; G02F1/136209; G02F2201/00; G02F2201/12; G02F2201/123; G02F2201/40
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
175 words
A transmission type liquid crystal display device comprising: a plurality of lines including gate lines and source lines, wherein at least one of the plurality of lines is at least partially light-shading; switching elements each arranged near a crossing of each gate line and each source line, a gate electrode of each switching element being connected to the gate line, a source electrode of the switching element being connected to the source line, and a drain electrode of the switching element being connected to a pixel electrode for applying a voltage to a liquid crystal layer, wherein: an interlayer organic insulating film has high transparency and is above the switching element, the gate line and the source line; and the display device further comprises a connecting electrode connected to the drain electrode and to the pixel electrode via a contact hole through the interlayer organic insulating film between the connecting electrode and the pixel electrode, and wherein the connecting electrode is on the light-shading part of the at least one of the plurality of lines.
Claim 2
Dependent Claim
175 words
A transmission type liquid crystal display device comprising: a plurality of lines including gate lines and source lines, wherein at least one of the plurality of lines is at least partially light-shading; switching elements each arranged near a crossing of each gate line and each source line, a gate electrode of each switching element being connected to the gate line, a source electrode of the switching element being connected to the source line, and a drain electrode of the switching element being connected to a pixel electrode for applying a voltage to a liquid crystal layer, wherein: an interlayer organic insulating film has high transparency and is above the switching element, the gate line and the source line; and the display device further comprises a connecting electrode connected to the drain electrode and to the pixel electrode via a contact hole through the interlayer organic insulating film between the connecting electrode and the pixel electrode, and wherein the connecting electrode is on the light-shading part of the at least one of the plurality of lines.
Claim 3
Dependent Claim
24 words
A transmission type liquid crystal display device according to claim 1, wherein the interlayer organic insulating film is made of a photosensitive acrylic resin.
Claim 4
Dependent Claim
23 words
A transmission type liquid crystal display device according to claim 1, wherein the interlayer organic insulating film is made of a decolored resin.
Claim 5
Dependent Claim
40 words
A transmission type liquid crystal display device according to claim 1, wherein the pixel electrode and at least one of the source line and the gate line overlap each other by 1 μm or more in a line width direction.
Claim 6
Dependent Claim
26 words
A transmission type liquid crystal display device according to claim 1, wherein the thickness of the interlayer organic insulating film is about 1.5 μm or more.
Claim 7
Dependent Claim
22 words
A transmission type liquid crystal display device according to claim 1, wherein the connecting electrode is formed of a transparent conductive film.
Claim 8
Dependent Claim
32 words
A transmission type liquid crystal display device according to claim 1, wherein a conductive metal nitride layer is formed below the contact hole to connect the connecting electrode and the pixel electrode.
Claim 9
Dependent Claim
94 words
A transmission type liquid crystal display device according to claim 1, further comprising: storage capacitor for holding a voltage applied to the liquid crystal layer, wherein a capacitance ratio is represented by expression: Capacitance ratio=C.sub.sd /(C.sub.sd +C.sub.1s +C.sub.s), and the ratio is 10% or less, wherein C sd denotes a capacitance value between the pixel electrode and the source line, C 1s denotes a capacitance value of a liquid crystal portion corresponding to each pixel in an intermediate display state, and C s denotes a capacitance value of the storage capacitor of each pixel.
Claim 10
Dependent Claim
38 words
A transmission type liquid crystal display device according to claim 1, wherein the shape of the pixel electrode is rectangular with a side parallel to the gate line being shorter than a side parallel to the source line.
Claim 11
Dependent Claim
49 words
A transmission type liquid crystal display device according to claim 1, further comprising a driving circuit for supplying to the source line a data signal of which polarity is inverted for every horizontal scanning period, and the data signal is supplied to the pixel electrode via the switching element.
Claim 12
Dependent Claim
64 words
A transmission type liquid crystal display device according to claim 1, further comprising a storage capacitor for holding a voltage applied to the liquid crystal layer, the storage capacitor including: a storage capacitor electrode; a storage capacitor counter electrode; and an insulating film therebetween; wherein the storage capacitor electrode is formed in the same layer as either the source line or the connecting electrode.
Claim 13
Dependent Claim
26 words
A transmission type liquid crystal display device according to claim 11, wherein the storage capacitor counter electrode is formed of a part of the gate line.
Claim 14
Dependent Claim
33 words
A transmission type liquid crystal display device according to claim 11, wherein the pixel electrode and the storage capacitor electrode are connected via the contact hole formed above the storage capacitor counter electrode.
Claim 15
Dependent Claim
28 words
A transmission type liquid crystal display device according to claim 11, wherein the contact hole is formed above either the storage capacitor counter electrode or the gate line.
Claim 16
Dependent Claim
28 words
A transmission type liquid crystal display device according to claim 1, wherein the drain electrode is offset laterally from the at least one of the plurality of lines.
Claim 17
Dependent Claim
21 words
A transmission type liquid crystal display device according to claim 1, wherein the plurality of lines further includes storage capacitor lines.
Claim 18
Dependent Claim
22 words
A transmission type liquid crystal display device according to claim 16, wherein the contact hole is aligned with the storage capacitor lines.
Claim 19
Dependent Claim
21 words
A transmission type liquid crystal display device according to claim 1, wherein the contact hole is aligned with the gate lines.
References Cited (Backward Citations)
US3602782A
Cited
JPS58184929A
Cited
EP0117957A2
Cited
US4759610A
Cited
JPS61156025A
Cited
US4688896A
Cited
JPS62135810A
Cited
US4857907A
Cited
JPS6435351A
Cited
US5003356A
Cited
US5166085A
Cited
US5032883A
Cited
US4923948A
Cited
US5335102A
Cited
JPH0442214A
Cited
US5182661A
Cited
JPH0468318A
Cited
JPH0474714A
Cited
JPH04307521A
Cited
JPH0588199A
Cited
US5446562A
Cited
JPH05210113A
Cited
US5526014A
Cited
JPH06186580A
Cited
US5585951A
Cited
US5483082A
Cited
JPH06208137A
Cited
JPH06230422A
Cited
EP0611812A2
Cited
US5517342A
Cited
EP0632229A1
Cited
JPH0736043A
Cited
JPH07122719A
Cited
US5573978A
Cited
US5682211A
Cited
US5688366A
Cited
US5688410A
Cited
US5675159A
Cited
US5641974A
Cited
US5658697A
Cited
US5679596A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-04-18 | 2003-10-18 | 2004-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-04-18 | 2007-10-18 | 2008-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-04-18 | 2011-10-18 | 2012-04-18 | $7700.00 | Window Closed / Lapsed |