Electro-optic device and stereoscopic vision display apparatus

Patent metadata

Field	Value
Publication number	US-9577794-B2
Application number	US-201113204822-A
Country	US
Kind code	B2
Filing date	Aug 8, 2011
Priority date	May 29, 2008
Publication date	Feb 21, 2017
Grant date	Feb 21, 2017

Abstract

An electro-optic device includes: an electro-optic panel displaying a display image with illumination light emitted from an illumination device; a display control circuit controlling the electro-optic panel to display a right-eye image during a right display period and display a left-eye image during a left display period; a glasses control circuit controlling a right-eye shutter of stereoscopic vision glasses so as to maintain an open state during the right display period, controlling a left-eye shutter of stereoscopic vision glasses so as to maintain an open state during the left display period, and controlling both the right-eye shutter and the left-eye shutter so as to maintain a close state during a blocking period; and an illumination control circuit controlling the illumination device to vary an intensity of the illumination light in a pulsed shape during the blocking period.

First claim

What is claimed is:

1. An electro-optic device which displays a right-eye image and a left-eye image stereoscopically viewed with stereoscopic vision glasses including a right-eye shutter and a left-eye shutter, comprising:
an electro-optic panel displaying a display image with illumination light emitted from an illumination device;
a display control circuit controlling the electro-optic panel to display the right-eye image during a first unit period and display the left-eye image during a second unit period, the first unit period and the second unit period being alternately set;
a glasses control circuit controlling the right-eye shutter so as to maintain an open state during a right display period in the first unit period, controlling the left-eye shutter so as to maintain an open state during a left display period in the second unit period, and controlling both the right-eye shutter and the left-eye shutter so as to maintain a close state during a blocking period in the first unit period and the second unit period, the blocking period being different from the right display period and the left display period; and
an illumination control circuit controlling the illumination device to supply an alternating driving current, such that the illumination device emits the illumination light during the first unit period and the second unit period and a polarity of the driving current is alternated during the blocking period,
wherein the polarity of the driving current in the right display period is different from the polarity of the driving current in the left display period.

2. The electro-optic device according to claim 1 , wherein the display control circuit controls the electro-optic panel so that the display image of the electro-optic panel is changed from the left-eye image to the right-eye image during the blocking period before start of the right display period and the display image of the electro-optic panel is changed from the right-eye image to the left-eye image during the blocking period before start of the left display period.

3. The electro-optic device according to claim 2 , further comprising:
a pixel section in which a plurality of pixel circuits including a liquid crystal element are arranged,
wherein the display control circuit controls the electro-optic panel so that an application voltage to each liquid crystal element becomes reverse in polarity between time of displaying the right-eye image during the right display period and time of displaying the right-eye image during the blocking period immediately before this right display period and so that the application voltage to each liquid crystal element becomes reverse in polarity between time of displaying the left-eye image during the left display period and time of displaying the left-eye image during the blocking period immediately before this left display period.

4. A stereoscopic vision display apparatus comprising:
the electro-optic device according to claim 1 ;
stereoscopic vision glasses controlled by the glass control circuit of the electro-optic device;
and an illumination device controlled by the illumination control circuit of the electro-optic device.

5. A stereoscopic vision display apparatus comprising:
the electro-optic device according to claim 2 ;
stereoscopic vision glasses controlled by the glass control circuit of the electro-optic device; and
an illumination device controlled by the illumination control circuit of the electro-optic device.

6. A stereoscopic vision display apparatus comprising:
the electro-optic device according to claim 3 ;
stereoscopic vision glasses controlled by the glass control circuit of the electro-optic device; and
an illumination device controlled by the illumination control circuit of the electro-optic device.

Assignees

• Horiguchi Hirosada
• Seiko Epson Corp

Inventors

• Horiguchi Hirosada

Classifications

• H04J13/0059

  CAZAC [constant-amplitude and zero auto-correlation] · CPC title

• H04L1/1861

  Physical mapping arrangements (for ACK signaling see also H04L5/0053) · CPC title

• H04N13/0438

  Electricity · mapped topic

• H04L1/1854 Primary

  Scheduling and prioritising arrangements · CPC title

• H04N13/0459

  Electricity · mapped topic