Patent US5394258A successfully refreshed from Google Patents.
US5394258A
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US
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Active matrix display screen with storage capacitors formed of conductive blocks, semiconductive material, nonconductive material, and capacitive lines
Assignee: France Telecom R&D SA
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Filing: 1994-06-22
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Granted: 1995-02-28
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Expires: 2014-06-22
Abstract
Abstract A liquid crystal display screen including a substrate with conductive addressing columns and conductive blocks, each including a block lengthening piece, a layer of semiconductive material followed by a layer of nonconductive material formed on the addressing columns and conductive blocks, and conductive addressing lines formed on the nonconductive material and each overlapping a block lengthening piece. The block lengthening pieces, the conductive addressing columns, and the conductive addressing lines form addressing transistors. Also, capacitive lines are formed on the nonconductive material and overlap the conductive blocks such that the conductive blocks, the semiconductive material, the nonconductive material, and the capacitive lines form storage capacitors.
Inventors
- 👤 Francois Morin
- 👤 Michel Le Contellec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:13
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/136213; G02F1/13624; G02F1/136259; Y; Y10; Y10S; Y10S148/00; Y10S148/014
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
157 words
A display screen comprising: a substrate; at least one conductive addressing column formed on the substrate; at least one conductive block formed on the substrate and including a first block lengthening piece; a layer of semiconductive material formed on the at least one conductive addressing column and the at least one conductive block; a layer of nonconductive material formed on the layer of semiconductive material; at least one conductive addressing line formed on the layer of nonconductive material and overlapping the first block lengthening piece, the at least one conductive addressing column, the first block lengthening piece and the at least one conductive addressing line forming an addressing transistor; and at least one capacitive line formed on the layer of nonconductive material and overlapping the at least one conductive block, the at least one conductive block, the layer of semiconductive material, the layer of nonconductive material and the at least one capacitive line forming a storage capacitor.
Claim 2
Dependent Claim
157 words
A display screen comprising: a substrate; at least one conductive addressing column formed on the substrate; at least one conductive block formed on the substrate and including a first block lengthening piece; a layer of semiconductive material formed on the at least one conductive addressing column and the at least one conductive block; a layer of nonconductive material formed on the layer of semiconductive material; at least one conductive addressing line formed on the layer of nonconductive material and overlapping the first block lengthening piece, the at least one conductive addressing column, the first block lengthening piece and the at least one conductive addressing line forming an addressing transistor; and at least one capacitive line formed on the layer of nonconductive material and overlapping the at least one conductive block, the at least one conductive block, the layer of semiconductive material, the layer of nonconductive material and the at least one capacitive line forming a storage capacitor.
Claim 3
Dependent Claim
46 words
The display screen according to claim 1, wherein the at least one conductive block comprises a second block lengthening piece, the at least one capacitive line overlapping the second block lengthening piece so as to form, along with the second block lengthening piece, the storage capacitor.
Claim 4
Dependent Claim
56 words
The display screen according to claim 1, wherein the at least one conductive addressing column comprises at least one column lengthening piece surrounding the first block lengthening piece, the at least one conductive addressing line overlapping the at least one column lengthening piece and the at least one conductive addressing column, thus forming a double transistor.
Claim 5
Dependent Claim
40 words
The display screen according to any one of claims 1 to 3, further comprising a reference strip, the reference strip being etched on a side of the substrate, the at least one capacitive line being connected to the reference strip.
Claim 6
Dependent Claim
59 words
The display screen according to claim 1, wherein the at least one conductive addressing column comprises two column lengthening pieces framing the first block lengthening piece and the at least one conductive addressing line comprises a conductive addressing line lengthening piece overlapping the two column lengthening pieces and the first block lengthening piece, the addressing transistor then being double.
Claim 7
Dependent Claim
59 words
The display screen according to claim 1, wherein the at least one conductive block is connected to two successive addressing transistors, one corresponding to one conductive addressing line and one to a next conductive addressing line, the at least one capacitive line overlapping the at least one conductive block in a portion between the two successive conductive addressing lines.
Claim 8
Dependent Claim
148 words
A display screen comprising: a substrate; a plurality of conductive addressing columns formed on the substrate; a plurality of conductive blocks formed on the substrate, each including a first block lengthening piece; a layer of semiconductive material formed on the plurality of conductive addressing columns and the plurality of conductive blocks; a layer of nonconductive material formed on the layer of semiconductive material; a plurality of conductive addressing lines formed on the layer of nonconductive material and each overlapping a first block lengthening piece, the plurality of conductive addressing columns, the first block lengthening pieces and the plurality of conductive addressing lines forming addressing transistors; a plurality of capacitive lines formed on the layer of nonconductive material and overlapping the plurality of conductive blocks, the plurality of conductive blocks, the layer of semiconductive material, the layer of nonconductive material and the plurality of capacitive lines forming storage capacitors.
Claim 9
Dependent Claim
148 words
A display screen comprising: a substrate; a plurality of conductive addressing columns formed on the substrate; a plurality of conductive blocks formed on the substrate, each including a first block lengthening piece; a layer of semiconductive material formed on the plurality of conductive addressing columns and the plurality of conductive blocks; a layer of nonconductive material formed on the layer of semiconductive material; a plurality of conductive addressing lines formed on the layer of nonconductive material and each overlapping a first block lengthening piece, the plurality of conductive addressing columns, the first block lengthening pieces and the plurality of conductive addressing lines forming addressing transistors; a plurality of capacitive lines formed on the layer of nonconductive material and overlapping the plurality of conductive blocks, the plurality of conductive blocks, the layer of semiconductive material, the layer of nonconductive material and the plurality of capacitive lines forming storage capacitors.
Claim 10
Dependent Claim
40 words
The display screen according to claim 7, wherein each conductive block comprises a second block lengthening piece, the capacitive lines overlapping the second block lengthening pieces so as to form, along with the second block lengthening pieces, the storage capacitors.
Claim 11
Dependent Claim
39 words
The display screen according to claim 7, wherein each addressing column comprises a column lengthening piece surrounding the first block lengthening piece, the addressing conductive lines overlapping said column lengthening pieces and the addressing columns, thus forming double transistors.
Claim 12
Dependent Claim
39 words
The display screen according to any one of claims 7 to 9, further comprising a reference strip, the reference strip being etched on a side of the substrate, each of the conductive lines being connected to the reference strip.
Claim 13
Dependent Claim
52 words
The display screen according to claim 7, wherein each addressing column comprises two column lengthening pieces framing the first block lengthening piece and each addressing conductive line comprises a conductive addressing line lengthening piece overlapping the two column lengthening pieces and the first block lengthening piece, the addressing transistors then being double.
Claim 14
Dependent Claim
50 words
The display screen according to claim 7, wherein each conductive block is connected to two successive addressing transistors, one corresponding to one conductive addressing line and one to a next conductive addressing line, each capacitive line overlapping the conductive blocks in a portion between the two successive addressing conductive lines.
Claim 15
Dependent Claim
150 words
A display screen comprising: a substrate; at least one conductive addressing column formed on the substrate; at least one conductive block formed on the substrate and including a first block lengthening piece and a second block lengthening piece; a layer of semiconductive material formed on the at least one conductive addressing column and the at least one conductive block; a layer of nonconductive material formed on the layer of semiconductive material; and at least one conductive addressing line formed on the layer of nonconductive material and overlapping the first block lengthening piece and the second block lengthening piece, the at least one conductive addressing column, the first block lengthening piece and the at least one conductive addressing line forming an addressing transistor, and, the second block lengthening piece, the layer of semiconductive material, the layer of nonconductive material and the at least one conductive addressing line forming a storage capacitor.
Claim 16
Dependent Claim
150 words
A display screen comprising: a substrate; at least one conductive addressing column formed on the substrate; at least one conductive block formed on the substrate and including a first block lengthening piece and a second block lengthening piece; a layer of semiconductive material formed on the at least one conductive addressing column and the at least one conductive block; a layer of nonconductive material formed on the layer of semiconductive material; and at least one conductive addressing line formed on the layer of nonconductive material and overlapping the first block lengthening piece and the second block lengthening piece, the at least one conductive addressing column, the first block lengthening piece and the at least one conductive addressing line forming an addressing transistor, and, the second block lengthening piece, the layer of semiconductive material, the layer of nonconductive material and the at least one conductive addressing line forming a storage capacitor.
Claim 17
Dependent Claim
142 words
A display screen comprising: a substrate; plurality of conductive addressing columns formed on the substrate; a plurality of conductive blocks formed on the substrate, each including a first block lengthening piece and a second block lengthening piece; a layer of semiconductive material formed on the plurality of conductive addressing columns and the plurality of conductive blocks; a layer of nonconductive material formed on the layer of semiconductive material; a plurality of conductive addressing lines formed on the layer of nonconductive material and each overlapping the first block lengthening piece and the second block lengthening piece, the plurality of conductive addressing columns, the first block lengthening pieces and the plurality of conductive addressing lines forming addressing transistors, and, the second block lengthening pieces, the layer of semiconductive material, the layer of nonconductive material and the plurality of conductive addressing lines forming storage capacitors.
Claim 18
Dependent Claim
142 words
A display screen comprising: a substrate; plurality of conductive addressing columns formed on the substrate; a plurality of conductive blocks formed on the substrate, each including a first block lengthening piece and a second block lengthening piece; a layer of semiconductive material formed on the plurality of conductive addressing columns and the plurality of conductive blocks; a layer of nonconductive material formed on the layer of semiconductive material; a plurality of conductive addressing lines formed on the layer of nonconductive material and each overlapping the first block lengthening piece and the second block lengthening piece, the plurality of conductive addressing columns, the first block lengthening pieces and the plurality of conductive addressing lines forming addressing transistors, and, the second block lengthening pieces, the layer of semiconductive material, the layer of nonconductive material and the plurality of conductive addressing lines forming storage capacitors.
References Cited (Backward Citations)
US4902638A
Cited
US4907861A
Cited
US4738749A
Cited
US4783147A
Cited
US4781438A
Cited
US5162901A
Cited
EP0430592A2
Cited
US5238861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-02-27 | 1998-08-29 | 1999-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-27 | 2002-08-29 | 2003-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-27 | 2006-08-29 | 2007-02-28 | $7700.00 | Window Closed / Lapsed |