Driving method of electro-optical device, electro-optical device and electronic apparatus

Patent metadata

Field	Value
Publication number	US-2016284302-A1
Application number	US-201415034149-A
Country	US
Kind code	A1
Filing date	Oct 30, 2014
Priority date	Nov 8, 2013
Publication date	Sep 29, 2016
Grant date	—

Abstract

Provided are a driving method of an electro-optical device, an electro-optical device and an electronic apparatus in which reductions in display quality are suppressed. The driving method of an electro-optical device that is provided with an element substrate, a facing substrate, and a liquid crystal layer that is disposed between the element substrate and the facing substrate, includes applying an AC signal V 1 to a plurality of first pixel electrode that are electrically connected to a first scanning line of the element substrate 10 , and applying an AC signal V 2 to a plurality of second pixel electrodes that are electrically connected to a second scanning line, which is disposed adjacent to the first scanning line, and the phase of the AC signal V 2 is delayed by a predetermined amount with respect to that of the AC signal V 1.

First claim

1 . A driving method of an electro-optical device that is provided with a first substrate,
a second substrate that is disposed facing the first substrate, and an electro-optical layer that is disposed between the first substrate and the second substrate, the method comprising:
applying a first signal to a first pixel electrode that is electrically connected to first wiring, which is disposed so as to cover the first substrate; and
applying a second signal to a second pixel electrode that is electrically connected to second wiring, which is disposed adjacent to the first wiring,
wherein the phase of the second signal is delayed by a predetermined amount with respect to that of the first signal.

2 . The driving method of an electro-optical device according to claim 1 , further comprising
applying a third signal to a third pixel electrode that is electrically connected to third wiring, which is disposed facing the first wiring so as to interpose the second wiring therebetween, wherein the phase of the third signal is delayed by a predetermined amount with respect to that of the second signal.

3 . The driving method of an electro-optical device according to claim 1 ,
wherein a frequency of the first signal is 10 mHz to 50 mHz.

4 . The driving method of an electro-optical device according to claim 1 ,
wherein a difference between a temporal average and a reference potential of a voltage of the first signal is substantially 0 V.

5 . The driving method of an electro-optical device according to claim 1 ,
wherein the frequency of the first signal is changed depending on a temperature of the electro-optical layer.

6 . The driving method of an electro-optical device according to claim 1 ,
wherein the first wiring and the second wiring are scanning lines.

7 . The driving method of an electro-optical device according to claim 6 ,
wherein the scanning lines are disposed along a long edge of an effective pixel region, and are disposed from a center of the effective pixel region toward an outer side in an order of the first wiring and the second wiring.

8 . The driving method of an electro-optical device according to claim 1 ,
wherein the waveform of the first signal is any one of a rectangular wave, a sine wave, and a triangular wave.

9 . A driving method of an electro-optical device that is provided with
a first substrate, a second substrate that is disposed facing the first substrate, an electro-optical layer that is disposed between the first substrate and the second substrate, first wiring that is disposed so as to cover the first substrate, second wiring that is disposed adjacent to the first wiring, a first pixel electrode that is electrically connected to the first wiring via a first switching element, a second pixel electrode that is electrically connected to the second wiring via a second switching element, and selection wiring that is electrically connected to the first switching element and the second switching element, wherein, when the first switching element and the second switching element are selected by applying a voltage to the selection wiring, a first signal is applied to the first wiring, and a second signal with a phase that differs from that of the first signal, is applied to the second wiring.

10 . The driving method of an electro-optical device according to claim 9 ,
wherein the electro-optical device is provided with
third wiring that is disposed facing the first wiring so as to interpose the second wiring, and
a third pixel electrode that is electrically connected to the third wiring via a third switching element, and
wherein, when the first switching element, the second switching element and the third switching element are selected by applying a voltage to the selection wiring, a third signal with a phase that differs from those of the first signal and the second signal, is applied to the third wiring.

11 . An electro-optical device comprising:
a first substrate; a second substrate that is disposed facing the first substrate; an electro-optical layer that is disposed between the first substrate and the second substrate; a first pixel electrode that is disposed so as to cover the first substrate; first wiring, which is electrically connected to the first pixel electrode, and to which a first signal is applied; a second pixel electrode; and second wiring that is disposed adjacent to the first wiring, is electrically connected to the second pixel electrode, and to which a second signal is applied, wherein the phase of the second signal is delayed by a predetermined amount with respect to that of the first signal.

12 . The electro-optical device according to claim 11 , further comprising:
a third pixel electrode; and third wiring that is disposed facing the first wiring so as to interpose the second wiring, is electrically connected to third pixel electrode, and to which a third signal is applied, wherein the phase of the third signal is delayed by a predetermined amount with respect to that of the second signal.

13 . The electro-optical device according to claim 11 ,
wherein a frequency of the first signal is 10 mHz to 50 mHz.

14 . The electro-optical device according to claim 11 ,
wherein a difference in potential between a temporal average and a reference potential of a voltage of the first signal is substantially 0 V.

15 . The electro-optical device according to claim 11 ,
wherein the first wiring and the second wiring are scanning lines.

16 . The electro-optical device according to claim 11 ,
wherein the electro-optical layer is a liquid crystal layer, and wherein an inorganic orientation film is disposed on a liquid crystal layer side of the first substrate and the second substrate.

17 . An electro-optical device comprising:
a first substrate; a second substrate that is disposed facing the first substrate; an electro-optical layer that is disposed between the first substrate and the second substrate; first wiring that is disposed so as to cover the first substrate; second wiring that is disposed adjacent to the first wiring; a first pixel electrode that is electrically connected to the first wiring via a first switching element; a second pixel electrode that is electrically connected to the second wiring via a second switching element; and selection wiring that is electrically connected to the first switching element and the second switching element, wherein, when the first switching element and the second switching element are selected by applying a voltage to the selection wiring, a first signal is applied to the first wiring, and a second signal with a phase that differs from that of the first signal, is applied to the second wiring.

18 . The electro-optical device according to claim 17 , further comprising:
third wiring that is disposed facing the first wiring so as to interpose the second wiring; and a third pixel electrode that is electrically connected to the third wiring via a third switching element, wherein, when the first switching element, the second switching element and the third switching element are selected by applying a voltage to the selection wiring, a third signal with a phase that differs from those of the first signal and the second signal, is applied to the third wiring.

19 . An electronic apparatus comprising:
the electro-optical device according to claim 11 .

Assignees

• Seiko Epson Corp

Inventors

• Tomikawa Naoki
• Takahashi Nariya

Classifications

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• G02F1/1337

  Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers · CPC title

• G09G3/3655 Primary

  Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors · CPC title

• G09G2310/06

  Details of flat display driving waveforms · CPC title

• G02F1/134309

  characterised by their geometrical arrangement · CPC title