US5282068A
Expired / Lapsed
US
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Liquid crystal display with opaque insulating layer and metal layer at and wider than inter-electrode gap and method of manufacturing
Assignee: Canon Inc
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Filing: 1991-11-07
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Granted: 1994-01-25
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Expires: 2011-11-07
Abstract
Abstract A liquid crystal display cell, a method of manufacturing a liquid crystal cell, and a liquid crystal display apparatus are provided. The method includes an inter-electrode light-shielding pattern forming step of sequentially forming an opaque insulating layer and a metal layer in this order at an area corresponding in position to a gap between electrodes on the substrate, the opaque layer and the metal layer having a width slightly greater than the width of the gap, and an electrode forming step of forming a plurality of stripe transparent electrodes by forming a transparent conductive layer on the whole surface, patterning the transparent conductive layer so as to divide the metal layer into two parts, and providing the transparent electrodes lined with the divided metal layers on both sides of each of the transparent electrode in the longitudinal direction.
Inventors
- 👤 Yutaka Inaba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:31
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/134309; G02F1/134336; G02F1/1335; G02F1/133509; G02F1/133512
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
120 words
A liquid crystal display cell comprising a pair of substrates, each substrate being provided with transparent stripe electrodes, the substrates being disposed facing each other with the strip electrodes crossed to provide pixels in a matrix arrangement; each substrate further comprising a pattern of inter-electrode light shields corresponding in position to gaps between said stripe electrodes, the light-shields being formed of an opaque insulating layer and a metal layer, said opaque layer and said metal layer having a width slightly greater than the widths of said gaps; wherein each of said metal layers is divided into two parts so as to line each longitudinal side of each of said transparent stripe electrodes with one part of said divided metal layers.
Claim 2
Dependent Claim
120 words
A liquid crystal display cell comprising a pair of substrates, each substrate being provided with transparent stripe electrodes, the substrates being disposed facing each other with the strip electrodes crossed to provide pixels in a matrix arrangement; each substrate further comprising a pattern of inter-electrode light shields corresponding in position to gaps between said stripe electrodes, the light-shields being formed of an opaque insulating layer and a metal layer, said opaque layer and said metal layer having a width slightly greater than the widths of said gaps; wherein each of said metal layers is divided into two parts so as to line each longitudinal side of each of said transparent stripe electrodes with one part of said divided metal layers.
Claim 3
Dependent Claim
16 words
A liquid crystal device according to claim 1, wherein said liquid crystal is ferroelectric liquid crystal.
Claim 4
Dependent Claim
22 words
A liquid crystal device according to claim 1, further comprising an insulating film and orientation film formed on said transparent stripe electrodes.
Claim 5
Dependent Claim
37 words
A liquid crystal display apparatus comprising a liquid crystal device as claimed in claim 1, a clock generator, a scan electrode selector, a scan electrode driver, a data generator, a data modulator and a signal electrode driver.
Claim 6
Dependent Claim
17 words
A liquid crystal display apparatus according to claim 4, wherein said liquid crystal is ferroelectric liquid crystal.
Claim 7
Dependent Claim
132 words
A liquid crystal display cell comprising a pair of substrates, each substrate being provided with transparent stripe electrodes, the substrates being disposed facing each other with the stripe electrodes crossed to provide pixels in a matrix arrangement; each substrate further comprising a pattern of inter-electrode light shields corresponding in position to gaps between said stripe electrodes, said light-shields being formed of two metal layers and a transparent insulating layer interposed between said two metal layers, at least one of said metal layers having a width slightly greater than the widths of said gaps; wherein each of said metal layer which contacts said transparent conductive layer is divided into two parts so as to line each longitudinal side of each of said transparent stripe electrodes with one part of a divided metal layer.
Claim 8
Dependent Claim
132 words
A liquid crystal display cell comprising a pair of substrates, each substrate being provided with transparent stripe electrodes, the substrates being disposed facing each other with the stripe electrodes crossed to provide pixels in a matrix arrangement; each substrate further comprising a pattern of inter-electrode light shields corresponding in position to gaps between said stripe electrodes, said light-shields being formed of two metal layers and a transparent insulating layer interposed between said two metal layers, at least one of said metal layers having a width slightly greater than the widths of said gaps; wherein each of said metal layer which contacts said transparent conductive layer is divided into two parts so as to line each longitudinal side of each of said transparent stripe electrodes with one part of a divided metal layer.
Claim 9
Dependent Claim
16 words
A liquid crystal device according to claim 6, wherein said liquid crystal is ferroelectric liquid crystal.
Claim 10
Dependent Claim
22 words
A liquid crystal device according to claim 6, further comprising an insulating film and orientation film formed on said transparent stripe electrode.
Claim 11
Dependent Claim
24 words
A liquid crystal device according to claim 6, wherein the one of said two metal layers which contacts the substrate is made of chromium.
Claim 12
Dependent Claim
37 words
A liquid crystal display apparatus comprising a liquid crystal device as claimed in claim 6, a clock generator, a scan electrode selector, a scan electrode driver, a data generator, a data modulator and a signal electrode driver.
Claim 13
Dependent Claim
17 words
A liquid crystal display apparatus according to claim 10, wherein said liquid crystal is ferroelectric liquid crystal.
Claim 14
Independent Claim
172 words
A method of manufacturing a liquid crystal display cell having a pair of substrates, each substrate being provided with transparent stripe electrodes, the substrates being disposed facing each other with the stripe electrodes crossed to provide pixels in a matrix arrangement, said method comprising: a step of forming on each of said pairs of substrates a pattern of inter-electrode light-shields by sequentially forming an opaque insulating layer and a metal layer in this order at plural areas corresponding in position to gaps between said stripe electrodes, said opaque layer and said metal layer at each gap having a width slightly greater than the width of said gap; and a step of forming said stripe electrodes by forming a transparent conductive layer on the light shields and the area between said light shields, patterning said transparent conductive layer into said stripe electrodes and dividing each of said metal layers into two parts so as to line each longitudinal side of each of said transparent stripe electrodes with one part of a divided layer.
Claim 15
Independent Claim
172 words
A method of manufacturing a liquid crystal display cell having a pair of substrates, each substrate being provided with transparent stripe electrodes, the substrates being disposed facing each other with the stripe electrodes crossed to provide pixels in a matrix arrangement, said method comprising: a step of forming on each of said pairs of substrates a pattern of inter-electrode light-shields by sequentially forming an opaque insulating layer and a metal layer in this order at plural areas corresponding in position to gaps between said stripe electrodes, said opaque layer and said metal layer at each gap having a width slightly greater than the width of said gap; and a step of forming said stripe electrodes by forming a transparent conductive layer on the light shields and the area between said light shields, patterning said transparent conductive layer into said stripe electrodes and dividing each of said metal layers into two parts so as to line each longitudinal side of each of said transparent stripe electrodes with one part of a divided layer.
Claim 16
Dependent Claim
14 words
Method according to claim 12, wherein said cell is a ferroelectric liquid crystal cell.
Claim 17
Dependent Claim
22 words
Method according to claim 12, further comprising a step of forming an insulating film and orientation film on said transparent stripe electrode.
Claim 18
Dependent Claim
14 words
Method according to claim 14, further comprising a step of rubbing said orientation film.
Claim 19
Independent Claim
171 words
A method of manufacturing a liquid crystal display cell having a pair of substrates, each substrate being provided with transparent stripe electrodes, the substrates being disposed facing each other with the stripe electrode crossed to provide pixels in a matrix arrangement, said method comprising: a step of forming on each of said pair of substrates a pattern of inter-electrode light-shielding elements by forming two metal layers at an area corresponding in position to a gap between said electrodes on said substrate and a transparent insulating layer between said two metal layers, said metal layers having a width slightly greater than the width of said gap; and a step of forming said stripe electrodes on each substrate by forming a transparent conductive layer, patterning said transparent conductive layer so as to divide the metal layer which contacts said transparent conductive layer into two parts such that each of said transparent stripe electrodes is lined with one part of a divided metal layer on each longitudinal side of each of said transparent electrodes.
Claim 20
Independent Claim
171 words
A method of manufacturing a liquid crystal display cell having a pair of substrates, each substrate being provided with transparent stripe electrodes, the substrates being disposed facing each other with the stripe electrode crossed to provide pixels in a matrix arrangement, said method comprising: a step of forming on each of said pair of substrates a pattern of inter-electrode light-shielding elements by forming two metal layers at an area corresponding in position to a gap between said electrodes on said substrate and a transparent insulating layer between said two metal layers, said metal layers having a width slightly greater than the width of said gap; and a step of forming said stripe electrodes on each substrate by forming a transparent conductive layer, patterning said transparent conductive layer so as to divide the metal layer which contacts said transparent conductive layer into two parts such that each of said transparent stripe electrodes is lined with one part of a divided metal layer on each longitudinal side of each of said transparent electrodes.
Claim 21
Dependent Claim
21 words
Method according to claim 16, wherein the one of said two metal layers which contacts the substrate is made of chromium.
References Cited (Backward Citations)
US4613209A
Cited
US4596667A
Cited
US4614609A
Cited
US4622165A
Cited
US4561726A
Cited
US4589996A
Cited
US4824213A
Cited
US4592858A
Cited
JPS61210325A
Cited
US4728176A
Cited
US5138473A
Cited
US5187601A
Cited
JPH02146502A
Cited
US5132816A
Cited
US5161043A
Cited
US5150233A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1997-01-24 | 1997-07-26 | 1998-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-24 | 2001-07-26 | 2002-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-24 | 2005-07-26 | 2006-01-25 | $7700.00 | Window Closed / Lapsed |