EP0525852B1
Expired / Lapsed
EP
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Display device
Assignee: Koninklijke Philips NV
•
Filing: 1992-07-02
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Granted: 1996-05-22
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Expires: 2012-07-02
Abstract
No abstract record available.
Inventors
- 👤 Peter Bas Anton Wolfs
- 👤 Karel Elbert Kuijk
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 03:34
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G09G3/367; G09G3/3607; G09G3/3648; G09G3/3614
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
129 words
A display device comprising a system of pixels arranged in rows and columns and a row selection circuit which can select rows of pixels by means of selection voltages, presented during operation to row electrodes, the device also comprising a circuit for presenting data voltages to column electrodes during selection, characterized in that the row selection circuit can select consecutive rows of pixels within groups of at least two rows of pixels during operation and charges consecutive groups of pixels in the opposite sense, the row selection circuit being capable of applying a selection voltage to at least one row electrode at the beginning or the end of a group of rows during operation, which selection voltage differs from selection voltages applied to other row electrodes within the group.
Claim 2
Dependent Claim
38 words
A display device as claimed in Claim 1 characterized in that absolute values of pixel voltages associated with the last row of pixels within a group are higher than absolute values related with picture information to be displayed.
Claim 3
Dependent Claim
51 words
A display device as claimed in Claim 1 or 2 characterized in that the absolute value of the selection voltage applied to the row electrode associated with the last row within a group is higher than the absolute value of the selection voltages applied to other row electrodes within the group.
Claim 4
Dependent Claim
74 words
A display device as claimed in Claim 1 or 2 characterized in that the row selection circuit is capable of providing a reset voltage to a row electrode before selection, the absolute value of the selection voltage applied after reset to the row electrode associated with the last row of pixels within a group being lower than the absolute value of the selection voltages applied after reset to other row electrodes within the group.
Claim 5
Dependent Claim
35 words
A display device as claimed in Claims 1 to 4 characterized in that the rows are divided into groups of two, with the possible exception of the first and the last row of the display.
Claim 6
Dependent Claim
28 words
A display device as claimed in Claims 1 to 4 characterized in that the picture electrodes are connected to row electrodes or column electrodes via active switching units.
Claim 7
Dependent Claim
24 words
A display device as claimed in Claim 6 characterized in that the active switching units comprise one or more two-pole means or three-pole means.
Claim 8
Dependent Claim
42 words
A display device as claimed in Claims 1 to 7 characterized in that it comprises a colour filter whose colour pixels of one and the same colour in consecutive rows are shifted with respect to each other by one or more columns.
Claim 9
Dependent Claim
35 words
A display device as claimed in Claims 1 to 7 characterized in that it comprises a colour filter whose colour elements in juxtaposed rows are shifted with respect to each other over half a pitch.
References Cited (Backward Citations)
No citation records indexed.
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