Patent US6285431B2 successfully refreshed from Google Patents.
US6285431B2
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US
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Liquid crystal display having wide viewing angle
Assignee: TCL China Star Optoelectronics Technology Co Ltd
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Filing: 1998-05-29
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Granted: 2001-09-04
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Expires: 2018-05-29
Abstract
Abstract Apertures are formed in the common electrode or in the pixel electrode of a liquid crystal display to form a fringe field. Storage capacitor electrodes are formed at the position corresponding to the apertures to prevent the light leakage due to the disclination caused by the fringe field. The apertures extend horizontally, vertically or obliquely. The apertures in adjacent pixel regions may have different directions to widen the viewing angle.
Inventors
- 👤 Jae-jin Lyu
- 👤 Kycong-Hyeon Kim
- 👤 Hea-Ri Lee
- 👤 Jian-Min Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:12
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/137; G02F1/133; G02F1/1333; G02F1/1337; G02F1/133707; G02F1/1343; G02F1/134309; G02F1/134336; G02F1/136; G02F1/1362; G02F1/136213; G02F1/139; G02F1/1393; G02F1/1335; G02F1/133509; G02F1/133512; G02F1/134372; G02F1/13712; G02F2201/00; G02F2201/12; G02F2201/121; G02F2201/128
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
94 words
A liquid crystal display comprising: a first substrate including a common electrode; and a second substrate opposite the first substrate, the second substrate including a pixel electrode located at a position corresponding to the common electrode and a storage capacitor electrode overlapping the pixel electrode, wherein one of the pixel electrode and the common electrode has an elongated linear aperture, the storage capacitor electrode is located at a position corresponding to the elongated aperture, and wherein each of the elongated apertures in adjacent pixel regions extend in different directions than the elongated linear aperture.
Claim 2
Dependent Claim
94 words
A liquid crystal display comprising: a first substrate including a common electrode; and a second substrate opposite the first substrate, the second substrate including a pixel electrode located at a position corresponding to the common electrode and a storage capacitor electrode overlapping the pixel electrode, wherein one of the pixel electrode and the common electrode has an elongated linear aperture, the storage capacitor electrode is located at a position corresponding to the elongated aperture, and wherein each of the elongated apertures in adjacent pixel regions extend in different directions than the elongated linear aperture.
Claim 3
Dependent Claim
27 words
A liquid crystal display of claim 1 , further comprising a liquid crystal layer having negative dielectric anisotropy and interposed between the first and the second substrates.
Claim 4
Dependent Claim
19 words
A liquid crystal display of claim 2 , wherein the liquid crystal layer comprises a chiral nematic liquid crystal.
Claim 5
Dependent Claim
27 words
A liquid crystal display of claim 2 , wherein the liquid crystal layer comprises a nematic liquid crystal including chiral dopant of 0.01 to 3.0 wt %.
Claim 6
Dependent Claim
43 words
A liquid crystal display of claim 2 , further comprising two alignment layers formed on the first and the second substrates respectively and aligning the molecular axes of liquid crystal molecules in the liquid crystal layer in the direction perpendicular to the substrates.
Claim 7
Dependent Claim
15 words
A liquid crystal display of claim 5 , wherein the alignment layers are not rubbed.
Claim 8
Dependent Claim
20 words
A liquid crystal display of claim 2 , further comprising a spacer made of a metal or an organic material.
Claim 9
Dependent Claim
26 words
A liquid crystal display of claim 1 , wherein the number of the apertures is equal to or more than two, and the apertures are linear.
Claim 10
Dependent Claim
21 words
A liquid crystal display of claim 8 , wherein the width of the aperture is in the range of 3-15 μm.
Claim 11
Dependent Claim
17 words
A liquid crystal display of claim 9 , wherein the distance between the apertures is 8-50 μm.
Claim 12
Dependent Claim
105 words
A liquid crystal display comprising: a first substrate including a plurality of gate lines, a plurality of data lines, a plurality of pixel electrodes formed in pixel regions defined by the gate lines and the data lines and a plurality of storage capacitor electrodes overlapping the pixel electrodes to form storage capacitors; and a second substrate opposite the first substrate, the second substrate including a common electrode having a plurality of elongated linear aperatures located at positions corresponding to the storage capacitor electrodes, and wherein each of the elongated apertures in adjacent pixel regions extend in different directions than the plurality of elongated linear apertures.
Claim 13
Dependent Claim
105 words
A liquid crystal display comprising: a first substrate including a plurality of gate lines, a plurality of data lines, a plurality of pixel electrodes formed in pixel regions defined by the gate lines and the data lines and a plurality of storage capacitor electrodes overlapping the pixel electrodes to form storage capacitors; and a second substrate opposite the first substrate, the second substrate including a common electrode having a plurality of elongated linear aperatures located at positions corresponding to the storage capacitor electrodes, and wherein each of the elongated apertures in adjacent pixel regions extend in different directions than the plurality of elongated linear apertures.
Claim 14
Dependent Claim
27 words
A liquid crystal display of claim 11 , further comprising a liquid crystal layer having negative dielectric anisotropy and interposed between the first and the second substrates.
Claim 15
Dependent Claim
19 words
A liquid crystal display of claim 12 , wherein the liquid crystal layer comprises a chiral nematic liquid crystal.
Claim 16
Dependent Claim
25 words
A liquid crystal display of claim 12 , wherein the liquid crystal layer comprises a nematic liquid crystal including 0.01-3.0 wt % of chiral dopant.
Claim 17
Dependent Claim
43 words
A liquid crystal display of claim 12 , further comprising two alignment layers formed on the first and the second substrates respectively and aligning the molecular axes of liquid crystal molecules in the liquid crystal layer in the direction perpendicular to the substrates.
Claim 18
Dependent Claim
15 words
A liquid crystal display of claim 15 , wherein the alignment layers are not rubbed.
Claim 19
Dependent Claim
24 words
A liquid crystal display of claim 11 , wherein the number of the apertures in each pixel is equal to or more than two.
Claim 20
Dependent Claim
21 words
A liquid crystal display of claim 17 , wherein the apertures are formed linearly and extend parallel to the data line.
Claim 21
Dependent Claim
21 words
A liquid crystal display of claim 17 , wherein the apertures are formed linearly and extend parallel to the gate line.
Claim 22
Dependent Claim
28 words
A liquid crystal display of claim 17 , wherein the apertures are formed linearly and make an angle of 0°-90° about the data line and the gate line.
Claim 23
Dependent Claim
16 words
A liquid crystal display of claim 20 , wherein the apertures are parallel to each other.
Claim 24
Dependent Claim
43 words
A liquid crystal display of claim 21 , further comprising two alignment layers formed on the first and the second substrates respectively and aligning the molecular axes of liquid crystal molecules in the liquid crystal layer in the direction perpendicular to the substrates.
Claim 25
Dependent Claim
14 words
A liquid crystal display of claim 22 , wherein the alignment layers are rubbed.
Claim 26
Dependent Claim
27 words
A liquid crystal display of claim 23 , wherein the rubbing direction of the alignment layers makes an angle of 0°-135° about the direction of the aperture.
Claim 27
Dependent Claim
21 words
A liquid crystal display of claim 24 , wherein the width of the aperture is in the range of 3-15 μm.
Claim 28
Dependent Claim
25 words
A liquid crystal display of claim 25 , wherein the distance between the apertures in a pixel region is in the range of 8-50 μm.
Claim 29
Dependent Claim
22 words
A liquid crystal display of claim 11 , wherein the gate line and the storage capacitor electrode are connected to each other.
Claim 30
Dependent Claim
107 words
A liquid crystal display comprising: a first substrate including a plurality of gate lines, a plurality of data lines, a plurality of pixel electrodes formed in the pixel regions defined by the gate lines and the data lines, a plurality of storage capacitor electrodes overlapping the pixel electrodes to form storage capacitors, wherein the pixel electrodes have an elongated linear aperture located at a position corresponding to the storage capacitor electrode, and wherein each of the elongated linear apertures of adjacent pixel regions extend in different directions than the elongated linear aperture; and a second substrate opposite the first substrate, the second substrate including a common electrode.
Claim 31
Dependent Claim
107 words
A liquid crystal display comprising: a first substrate including a plurality of gate lines, a plurality of data lines, a plurality of pixel electrodes formed in the pixel regions defined by the gate lines and the data lines, a plurality of storage capacitor electrodes overlapping the pixel electrodes to form storage capacitors, wherein the pixel electrodes have an elongated linear aperture located at a position corresponding to the storage capacitor electrode, and wherein each of the elongated linear apertures of adjacent pixel regions extend in different directions than the elongated linear aperture; and a second substrate opposite the first substrate, the second substrate including a common electrode.
Claim 32
Dependent Claim
27 words
A liquid crystal display of claim 28 , further comprising a liquid crystal layer having negative dielectric anisotropy and interposed between the first and the second substrates.
Claim 33
Dependent Claim
19 words
A liquid crystal display of claim 29 , wherein the liquid crystal layer comprises a chiral nematic liquid crystal.
Claim 34
Dependent Claim
25 words
A liquid crystal display of claim 29 , wherein the liquid crystal layer comprises a nematic liquid crystal including chiral dopant of 0.01-3.0 wt %.
Claim 35
Dependent Claim
43 words
A liquid crystal display of claim 28 , further comprising two alignment layers formed on the first and the second substrates respectively and aligning the molecular axes of liquid crystal molecules in the liquid crystal layer in the direction perpendicular to the substrates.
Claim 36
Dependent Claim
15 words
A liquid crystal display of claim 32 , wherein the alignment layers are not rubbed.
Claim 37
Dependent Claim
20 words
A liquid crystal display of claim 28 , wherein the number of the apertures in each is at least two.
Claim 38
Dependent Claim
21 words
A liquid crystal display of claim 34 , wherein the apertures are formed linearly and extend parallel to the data line.
Claim 39
Dependent Claim
21 words
A liquid crystal display of claim 34 , wherein the apertures are formed linearly and extend parallel to the gate line.
Claim 40
Dependent Claim
28 words
A liquid crystal display of claim 34 , wherein the apertures are formed linearly and make an angle of 0°-90° about the data line and the gate line.
Claim 41
Dependent Claim
16 words
A liquid crystal display of claim 37 , wherein the apertures are parallel to each other.
Claim 42
Dependent Claim
43 words
A liquid crystal display of claim 38 , further comprising two alignment layers formed on the first and the second substrates respectively and aligning the molecular axes of liquid crystal molecules in the liquid crystal layer in the direction perpendicular to the substrates.
Claim 43
Dependent Claim
14 words
A liquid crystal display of claim 39 , wherein the alignment layers are rubbed.
Claim 44
Dependent Claim
27 words
A liquid crystal display of claim 40 , wherein the rubbing direction of the alignment layers makes an angle of 0°-135° about the direction of the aperture.
Claim 45
Dependent Claim
21 words
A liquid crystal display of claim 34 , wherein the width of the aperture is in the range of 3-15 μm.
Claim 46
Dependent Claim
25 words
A liquid crystal display of claim 42 , wherein the distance between the apertures in a pixel region is in the range of 8-50 μm.
Claim 47
Dependent Claim
31 words
A liquid crystal display of claim 28 , further comprising an organic insulating layer disposed between the gate line, the data line and the storage capacitor electrode and the pixel electrode.
Claim 48
Dependent Claim
24 words
A liquid crystal display of claim 44 , wherein the thickness of the organic insulating layer is equal to or more than 3 μm.
Claim 49
Dependent Claim
19 words
A liquid crystal display of claim 45 , further comprising a spacer made of metal or an organic material.
References Cited (Backward Citations)
US4639087A
Cited
US4869576A
Cited
US5136407A
Cited
US5229873A
Cited
JPH0588150A
Cited
US5309264A
Cited
US5767926A
Cited
US5666179A
Cited
US5608556A
Cited
US5953093A
Cited
US5724107A
Cited
US5641974A
Cited
US5995176A
Cited
US6115093A
Cited
US6100953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-09-03 | 2005-03-05 | 2005-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-09-03 | 2009-03-05 | 2009-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-09-03 | 2013-03-05 | 2013-09-04 | $7700.00 | Window Closed / Lapsed |