US6724358B2 — Active matrix type display apparatus and method f…

Claim 1

Independent Claim 203 words

An active matrix type display apparatus comprising: a plurality of signal lines; a plurality of scanning lines intersecting with the signal lines; switching elements arranged at intersections of the signal lines and the scanning lines, the switching elements being selectively put into a conductive state for a predetermined period of time per vertical period in accordance with a scanning signal on the scanning lines; pixel capacitors arranged at the intersections and driven by a video signal on the signal lines through the switching elements in the conducting state, an image being displayed depending on a charge state of the pixel capacitors; auxiliary capacitors associated with respective pixel capacitors, one side of each of the auxiliary capacitors being connected to at least one of the switching elements; a plurality of auxiliary capacitor lines, the other side of each of the auxiliary capacitors being connected to at least one of the auxiliary capacitor lines; and a driver for driving the auxiliary capacitor lines such that a display luminance is reduced for a predetermined period of time after reaching the display luminance corresponding to the video signal while the switching elements are in the non-conducting state in accordance with the scanning signal on the scanning lines.

Claim 2

Dependent Claim 203 words

An active matrix type display apparatus comprising: a plurality of signal lines; a plurality of scanning lines intersecting with the signal lines; switching elements arranged at intersections of the signal lines and the scanning lines, the switching elements being selectively put into a conductive state for a predetermined period of time per vertical period in accordance with a scanning signal on the scanning lines; pixel capacitors arranged at the intersections and driven by a video signal on the signal lines through the switching elements in the conducting state, an image being displayed depending on a charge state of the pixel capacitors; auxiliary capacitors associated with respective pixel capacitors, one side of each of the auxiliary capacitors being connected to at least one of the switching elements; a plurality of auxiliary capacitor lines, the other side of each of the auxiliary capacitors being connected to at least one of the auxiliary capacitor lines; and a driver for driving the auxiliary capacitor lines such that a display luminance is reduced for a predetermined period of time after reaching the display luminance corresponding to the video signal while the switching elements are in the non-conducting state in accordance with the scanning signal on the scanning lines.

Claim 3

Dependent Claim 214 words

An active matrix type display apparatus comprising: a plurality of signal lines; a plurality of scanning lines intersecting with the signal lines; switching elements arranged at intersections of the signal lines and the scanning lines, the switching elements being selectively put into a conductive state for a predetermined period of time per vertical period in accordance with a scanning signal on the scanning lines; pixel capacitors arranged at the intersections and driven by a video signal on the signal lines through the switching elements in the conducting state, an image being displayed depending on a charge state of the pixel capacitors; auxiliary capacitors associated with respective pixel capacitors, one side of each of the auxiliary capacitors being connected to at least one of the switching elements; a plurality of auxiliary capacitor lines, the other side of each of the auxiliary capacitors being connected to at least one of the auxiliary capacitor lines; and a driver for driving the auxiliary capacitor lines such that a signal of the same polarity as a video signal having a predetermined amplitude is applied at least once per vertical period, after applying a display signal corresponding to the video signal while the switching elements are in the non-conducting state in accordance with the scanning signal on the scanning lines.

Claim 4

Dependent Claim 214 words

An active matrix type display apparatus comprising: a plurality of signal lines; a plurality of scanning lines intersecting with the signal lines; switching elements arranged at intersections of the signal lines and the scanning lines, the switching elements being selectively put into a conductive state for a predetermined period of time per vertical period in accordance with a scanning signal on the scanning lines; pixel capacitors arranged at the intersections and driven by a video signal on the signal lines through the switching elements in the conducting state, an image being displayed depending on a charge state of the pixel capacitors; auxiliary capacitors associated with respective pixel capacitors, one side of each of the auxiliary capacitors being connected to at least one of the switching elements; a plurality of auxiliary capacitor lines, the other side of each of the auxiliary capacitors being connected to at least one of the auxiliary capacitor lines; and a driver for driving the auxiliary capacitor lines such that a signal of the same polarity as a video signal having a predetermined amplitude is applied at least once per vertical period, after applying a display signal corresponding to the video signal while the switching elements are in the non-conducting state in accordance with the scanning signal on the scanning lines.

Claim 5

Dependent Claim 63 words

The active matrix type display apparatus of claim 1 , wherein with respect to the scanning lines which select the switching elements, the auxiliary capacitors are divided into groups of a plurality of auxiliary capacitors, the group being associated with a plurality of neighboring scanning lines, and that the driver collectively drives all auxiliary capacitor lines connected to a group of auxiliary capacitors.

Claim 6

Dependent Claim 27 words

The active matrix type display apparatus of claim 1 , wherein the auxiliary capacitor lines driven by the driver are formed in parallel to the scanning lines.

Claim 7

Dependent Claim 78 words

The active matrix type display apparatus of claim 1 , wherein an active matrix is formed such that the auxiliary capacitor lines connected to the other sides of the auxiliary capacitors driven by the switching elements to which the scanning signal is applied from the scanning lines also serve as the respectively adjacent scanning lines, and the driver carries out driving for the auxiliary capacitors and driving for scanning the switching elements connected to the adjacent scanning lines.

Claim 8

Dependent Claim 61 words

The active matrix type display apparatus of claim 1 , wherein the pixel capacitors include a liquid crystal layer arranged between opposing electrodes, and display is performed in normally white display mode, such that display luminance is high when a voltage applied between the electrodes is low, and display luminance is low when the voltage applied between the electrodes is high.

Claim 9

Dependent Claim 63 words

The active matrix type display apparatus of claim 2 , wherein with respect to the scanning lines which select the switching elements, the auxiliary capacitors are divided into groups of a plurality of auxiliary capacitors, the group being associated with a plurality of neighboring scanning lines, and that the driver collectively drives all auxiliary capacitor lines connected to a group of auxiliary capacitors.

Claim 10

Dependent Claim 27 words

The active matrix type display apparatus of claim 2 , wherein the auxiliary capacitor lines driven by the driver are formed in parallel to the scanning lines.

Claim 11

Dependent Claim 78 words

The active matrix type display apparatus of claim 2 , wherein an active matrix is formed such that the auxiliary capacitor lines connected to the other sides of the auxiliary capacitors driven by the switching elements to which the scanning signal is applied from the scanning lines also serve as the respectively adjacent scanning lines, and the driver carries out driving for the auxiliary capacitors and driving for scanning the switching elements connected to the adjacent scanning lines.

Claim 12

Dependent Claim 61 words

The active matrix type display apparatus of claim 2 , wherein the pixel capacitors include a liquid crystal layer arranged between opposing electrodes, and display is performed in normally white display mode, such that display luminance is high when a voltage applied between the electrodes is low, and display luminance is low when the voltage applied between the electrodes is high.

Claim 13

Independent Claim 223 words

A method for driving an active matrix type display apparatus comprising a plurality of signal lines; a plurality of scanning lines intersecting with the signal lines; switching elements arranged at intersections of the signal lines and the scanning lines, the switching elements being selectively put into a conductive state for a predetermined period of time per vertical period in accordance with a scanning signal on the scanning lines; pixel capacitors arranged at the intersections and driven by a video signal on the signal lines through the switching elements in the conducting state, an image being displayed depending on a charge state of the pixel capacitors; auxiliary capacitors associated with respective pixel capacitors, one side of each of the auxiliary capacitors being connected to at least one of the switching elements; and a plurality of auxiliary capacitor lines, the other side of each of the auxiliary capacitors being connected to at least one of the auxiliary capacitor lines, the method comprising: driving the auxiliary capacitor lines for a predetermined period of the period after reaching a display luminance corresponding to the video signal in which the switching elements are in the non-conducting state in accordance with the scanning signal on the scanning lines, such that a charge state of the pixel capacitors connected to the switching elements changes to a display luminance reduction side.

Claim 14

Independent Claim 223 words

A method for driving an active matrix type display apparatus comprising a plurality of signal lines; a plurality of scanning lines intersecting with the signal lines; switching elements arranged at intersections of the signal lines and the scanning lines, the switching elements being selectively put into a conductive state for a predetermined period of time per vertical period in accordance with a scanning signal on the scanning lines; pixel capacitors arranged at the intersections and driven by a video signal on the signal lines through the switching elements in the conducting state, an image being displayed depending on a charge state of the pixel capacitors; auxiliary capacitors associated with respective pixel capacitors, one side of each of the auxiliary capacitors being connected to at least one of the switching elements; and a plurality of auxiliary capacitor lines, the other side of each of the auxiliary capacitors being connected to at least one of the auxiliary capacitor lines, the method comprising: driving the auxiliary capacitor lines for a predetermined period of the period after reaching a display luminance corresponding to the video signal in which the switching elements are in the non-conducting state in accordance with the scanning signal on the scanning lines, such that a charge state of the pixel capacitors connected to the switching elements changes to a display luminance reduction side.

Claim 15

Independent Claim 224 words

A method for driving an active matrix type display apparatus comprising a plurality of signal lines; a plurality of scanning lines intersecting with the signal lines; switching elements arranged at intersections of the signal lines and the scanning lines, the switching elements being selectively put into a conductive state for a predetermined period of time per vertical period in accordance with a scanning signal on the scanning lines; pixel capacitors arranged at the intersections and driven by a video signal on the signal lines through the switching elements in the conducting state, an image being displayed depending on a charge state of the pixel capacitors; auxiliary capacitors associated with respective pixel capacitors, one side of each of the auxiliary capacitors being connected to at least one of the switching elements; and a plurality of auxiliary capacitor lines, the other side of each of the auxiliary capacitors being connected to at least one of the auxiliary capacitor lines, the method comprising: driving the auxiliary capacitor lines for a period of time after applying a display signal corresponding to the video signal in which the switching elements are in the non-conducting state in accordance with the scanning signal on the scanning lines, such that a signal of the same polarity as the video signal having a predetermined amplitude is applied at least once per vertical period.

Claim 16

Independent Claim 224 words

A method for driving an active matrix type display apparatus comprising a plurality of signal lines; a plurality of scanning lines intersecting with the signal lines; switching elements arranged at intersections of the signal lines and the scanning lines, the switching elements being selectively put into a conductive state for a predetermined period of time per vertical period in accordance with a scanning signal on the scanning lines; pixel capacitors arranged at the intersections and driven by a video signal on the signal lines through the switching elements in the conducting state, an image being displayed depending on a charge state of the pixel capacitors; auxiliary capacitors associated with respective pixel capacitors, one side of each of the auxiliary capacitors being connected to at least one of the switching elements; and a plurality of auxiliary capacitor lines, the other side of each of the auxiliary capacitors being connected to at least one of the auxiliary capacitor lines, the method comprising: driving the auxiliary capacitor lines for a period of time after applying a display signal corresponding to the video signal in which the switching elements are in the non-conducting state in accordance with the scanning signal on the scanning lines, such that a signal of the same polarity as the video signal having a predetermined amplitude is applied at least once per vertical period.

Claim 17

Dependent Claim 67 words

The method for driving an active matrix type display apparatus of claim 11 , wherein the pixel capacitors include a liquid crystal layer arranged between opposing electrodes, and display is performed in normally white display mode, such that the display luminance is high when the voltage applied between the electrodes is low, and the display luminance is low when the voltage applied between the electrodes is high.

Claim 18

Dependent Claim 64 words

The method for driving an active matrix type display apparatus of claim 11 , wherein the predetermined period of the period in which the switching elements are in the non-conducting state is within a range of 10% to 70% of the period in which the switching elements are selectively put into the conducting state in accordance with the scanning signal on the scanning lines.

Claim 19

Dependent Claim 86 words

The method for driving an active matrix type display apparatus of claim 11 , wherein driving of the auxiliary capacitor lines is carried out such that an absolute value |ΔVcs| of a total displacement potential ΔVcs between the electrodes of the pixel capacitors which is produced through the auxiliary capacitors satisfies the condition |ΔVcs|>Vc×Cp/Ccs, wherein Vc is an intermediate luminance display voltage applied to the pixel capacitors during display, Cp is a total capacitance of a pixel capacitor including a capacitance Ccs of the auxiliary capacitor.

Claim 20

Dependent Claim 30 words

The method for driving an active matrix type display apparatus of claim 11 , wherein an overshooting voltage is applied at an initial stage when driving the auxiliary capacitor lines.

Claim 21

Dependent Claim 26 words

The method for driving an active matrix type display apparatus of claim 11 , wherein the voltage is changed stepwise when driving the auxiliary capacitor lines.

Claim 22

Dependent Claim 67 words

The method for driving an active matrix type display apparatus of claim 12 , wherein the pixel capacitors include a liquid crystal layer arranged between opposing electrodes, and display is performed in normally white display mode, such that the display luminance is high when the voltage applied between the electrodes is low, and the display luminance is low when the voltage applied between the electrodes is high.

Claim 23

Dependent Claim 64 words

The method for driving an active matrix type display apparatus of claim 12 , wherein the predetermined period of the period in which the switching elements are in the non-conducting state is within a range of 10% to 70% of the period in which the switching elements are selectively put into the conducting state in accordance with the scanning signal on the scanning lines.

Claim 24

Dependent Claim 86 words

The method for driving an active matrix type display apparatus of claim 12 , wherein driving of the auxiliary capacitor lines is carried out such that an absolute value |ΔVcs| of a total displacement potential ΔVcs between the electrodes of the pixel capacitors which is produced through the auxiliary capacitors satisfies the condition |ΔVcs|>Vc×Cp/Ccs, wherein Vc is an intermediate luminance display voltage applied to the pixel capacitors during display, Cp is a total capacitance of a pixel capacitor including a capacitance Ccs of the auxiliary capacitor.

Claim 25

Dependent Claim 30 words

The method for driving an active matrix type display apparatus of claim 12 , wherein an overshooting voltage is applied at an initial stage when driving the auxiliary capacitor lines.

Claim 26

Dependent Claim 26 words

The method for driving an active matrix type display apparatus of claim 12 , wherein the voltage is changed stepwise when driving the auxiliary capacitor lines.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2007-04-20	2007-10-20	2008-04-20	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2011-04-20	2011-10-20	2012-04-20	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2015-04-20	2015-10-20	2016-04-20	$7700.00	Window Closed / Lapsed

Active matrix type display apparatus and method for driving the same

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