Patent EP0498498A2 successfully refreshed from Google Patents.
EP0498498A2
Expired / Lapsed
EP
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Active matrix electro-optic display with close-packed arrangement of diamond-shaped pixels
Assignee: Koninklijke Philips NV
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Filing: 1992-01-30
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Granted: —
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Expires: 2012-01-30
Abstract
Abstract An active matrix liquid crystal display device has diamond-shaped pixels arrayed in a close-packed arrangement, and interconnected by row and column electrodes which zigzag between the pixels, each column electrode extending between and being common to two columns of pixels and their associated thin film switches, and the column electrode-switch connections alternating sequentially between pixel columns.
Inventors
- 👤 Allan Carlson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 18:12
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
69 words
An active matrix electro-optic display device comprising an array of pixel electrodes, a switch associated with each pixel electrode, and an array of row and column electrodes interconnecting the pixel electrodes via the switches; characterized in that the pixel electrodes are diamond-shaped each column electrode extends between and is common to two columns of pixels and their associated switches and the column electrode-switch connections alternate sequentially between pixel columns.
Claim 2
Dependent Claim
69 words
An active matrix electro-optic display device comprising an array of pixel electrodes, a switch associated with each pixel electrode, and an array of row and column electrodes interconnecting the pixel electrodes via the switches; characterized in that the pixel electrodes are diamond-shaped each column electrode extends between and is common to two columns of pixels and their associated switches and the column electrode-switch connections alternate sequentially between pixel columns.
Claim 3
Dependent Claim
42 words
The device of Claim 1 in which the row electrodes comprise legs extending between adjacent sides of the pixel electrodes and in close proximity near the corners of the pixel electrodes, thereby following a zigzag pattern between the rows of pixel electrodes.
Claim 4
Dependent Claim
20 words
The device of Claim 2 in which the column electrodes follow a zigzag pattern between the columns of pixel electrodes.
Claim 5
Dependent Claim
21 words
The device of Claim 3 in which the row and column electrodes cross over long adjacent sides of the pixel electrodes.
Claim 6
Dependent Claim
17 words
The device of Claim 4 in which cross-over occurs substantially at the mid-points of the adjacent sides.
Claim 7
Dependent Claim
25 words
The device of Claim 1 in which the switches comprise thin film transistors having source, drain and channel regions, and source, drain and gate electrodes.
Claim 8
Dependent Claim
39 words
The device of Claim 6 in which the source electrode of each switch is connected to a column electrode, the gate electrode is a portion of a row electrode, and the drain electrode is connected to a pixel electrode.
Claim 9
Dependent Claim
22 words
The device of Claim 6 in which the source, drain and channel regions of the thin film transistor switch comprise polycrystalline silicon.
Claim 10
Dependent Claim
20 words
The device of Claim 8 in which each switch also comprises a second gate electrode extending from the row electrode.
Claim 11
Dependent Claim
32 words
The device of Claim 8 in which at least a portion of the row electrode adjacent the top sides of a pixel comprise one electrode of a storage capacitor for the pixel.
References Cited (Backward Citations)
No citation records indexed.
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