US 6,937,220 B2Granted

Active matrix display panel and image display device adapting same

AssigneeSharp Kabushiki Kaisha

InventorsKazuo Kitaura, Hajime Washio

Life of this patent

Estimating the term…

Loading patent…

Abstract

An active matrix display panel has (1) a plurality of row electrode lines; (2) a plurality of column electrode lines; (3) a first MOS transistor for each pixel; and (4) a second MOS transistor for each pixel. The first MOS transistor has (a) a first terminal connected to each of the column electrode line, (b) a second terminal connected to a liquid crystal, (c) a control terminal connected to each of the row electrode line, wherein an ON potential is higher than a signal potential supplied to the row electrode line. The second MOS transistor has (a) a first terminal connected to each of the row electrode line, (b) a second terminal connected to the electro-optic element, and (c) a control terminal connected to the column electrode line, wherein an ON potential is higher than a signal potential supplied to the column electrode line.

Claims19

Dependent claims

An active matrix display panel comprising:

a plurality of row electrode lines;
a plurality of column electrode lines arranged in a matrix with respect to said row electrode lines;
a pixel including an electro-optic element, arranged in a vicinity of each intersection of said row electrode lines and said column electrode lines;
a first switching element provided to each of the pixels, having (a) a first terminal connected to one of said column electrode lines, (b) a second terminal connected to said electro-optic element, and (c) a control terminal for ON/OFF control connected to one of said row electrode lines, wherein an ON potential at which said first switching element is switched ON when the potential is supplied to the control terminal is higher than a signal potential supplied to said row electrode line;
and
a second switching element provided to each of the pixels, having (a) a first terminal connected to the one of said row electrode lines, (b) a second terminal connected to said electro-optic element, and (c) a control terminal for ON/OFF control connected to the one of said column electrode lines, wherein an ON potential at which said second switching element is switched ON when the potential is supplied to the control terminal is higher than a signal potential supplied to said column electrode line.

3 more elements

An active matrix display panel comprising:

a plurality of row electrode lines and a plurality of column electrode lines arranged in a matrix, each of the row and column electrode lines functioning as a source bus line and a gate bus line;
and
a pixel including an electro-optic element, arranged in a vicinity of an intersection of one of said row electrode lines and one of said column electrode lines,
wherein each pixel includes:
a first switching element which operates as a switching element for driving the pixel while the one said row electrode line is the gate bus line and the one said column electrode line is the source bus line;
and
a second switching element which operates as a switching element for driving the pixel while the one said row electrode line is the source bus line and the one said column electrode line is the gate bus line.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/251,857Filed 23 Sep 2002
Priority: JP 2001-29228425 Sep 2001
Published: US 2003/0058231 A127 Mar 2003
Granted: 30 Aug 2005
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

G09G 3/3233
Using an active matrix: with pixel circuitry controlling the current through the light-emitting element
G09G 3/3648
Control of matrices with row and column drivers: using an active matrix
G09G 3/20
Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes: for presentation of an…
G09G 2300/0842
Several active elements per pixel in active matrix panels: forming a memory circuit, e.g. a dynamic memory with one capacitor