公开(公告)号：US20220417476A1

公开(公告)日：2022-12-29

申请号：US17848541

申请日：2022-06-24

Applicant: SEIKO EPSON CORPORATION

Inventor： Toru AOKI

IPC: H04N9/31

Abstract: A projector includes: an electro-optical panel including a plurality of pixels; an optical-path shift element configured to change an optical path of light emitted from the plurality of pixels; and an image processing circuit configured to, in a unit period, supply an image signal to the plurality of pixels in an order, the unit period being included in one frame period for displaying an image of one frame indicated by an input image signal, the image signal corresponding to the plurality of pixels and being generated on a basis of the input image signal, in which the image processing circuit includes an adjustment circuit configured to adjust a response velocity of the plurality of pixels when the image displayed by the electro-optical panel is switched, on a basis of an order of supply of the image signal or of a position of a pixel at the electro-optical panel.

公开(公告)号：US20190331957A1

公开(公告)日：2019-10-31

申请号：US16394000

申请日：2019-04-25

Applicant: SEIKO EPSON CORPORATION

Inventor： Toru AOKI ,  Ai KOIKE ,  Hiroaki MOCHIZUKI ,  Noriaki MIYASAKA

IPC: G02F1/1333

Abstract: An electro-optical device includes a display panel including a liquid crystal layer interposed between a pair of substrates, and in the electro-optical device, a normal display mode and a refresh mode serving as a specific display mode in which the display panel is set to have a predefined temperature higher than ordinary temperature and lower than an Ni point of the liquid crystal layer and is energized in display where brightness becomes homogeneous in a screen are selectable.

公开(公告)号：US20190219848A1

公开(公告)日：2019-07-18

申请号：US16248030

申请日：2019-01-15

Applicant: SEIKO EPSON CORPORATION

Inventor： Toru AOKI

IPC: G02F1/137 ,  G02F1/13363 ,  G09G3/36

CPC classification number: G02F1/137 ,  G02F1/133528 ,  G02F1/13363 ,  G02F1/133734 ,  G02F2001/133531 ,  G02F2001/13712 ,  G02F2203/01 ,  G02F2203/30 ,  G02F2203/64 ,  G03B21/006 ,  G09G3/3607

Abstract: A transmissive-type liquid crystal device of a normally black mode, an image processing circuit configured to output an applied voltage to be applied to a liquid crystal element, and a phase difference compensation element configured to cancel a phase difference occurring inside of the liquid crystal element. The phase difference compensation element is disposed such that, in relative transmittance-voltage characteristics representing a relationship between an applied voltage and an intensity of light emitted from the liquid crystal element, the intensity of the light emitted from the liquid crystal element is minimized with an applied voltage corresponding to a point belonging to an area Z having a large change in inclination of a tangent line disposed between areas X and Y exhibiting a small change in inclination of a tangent line touching each of points on a light intensity-voltage characteristic corresponding to each of applied voltages at every predefined voltage interval.

公开(公告)号：US20240015271A1

公开(公告)日：2024-01-11

申请号：US18372404

申请日：2023-09-25

Applicant: SEIKO EPSON CORPORATION

Inventor： Toru AOKI ,  Hiroyuki HOSAKA

IPC: H04N9/31 ,  G09G3/00 ,  G09G5/391

CPC classification number: H04N9/3185 ,  H04N9/3188 ,  G09G3/007 ,  G09G5/391 ,  G09G2340/16 ,  G09G2360/18 ,  G09G2320/0285

Abstract: A projector including an electro-optical panel in which a plurality of pixels are arrayed, an optical path shifting element configured to change an optical path of light emitted from the plurality of pixels, and a control circuit configured to control a state of the optical path shifting element such that light emitted from a predetermined pixel among the plurality of pixels reaches a first position on a display screen in the first unit period, control a state of the optical path shifting element such that light emitted from the predetermined pixel reaches a second position on the display screen in the second unit period, and control a state of the optical path shifting element in a transition period in which a unit period transitions from the first unit period to the second unit period based on a type of image indicated by an input image signal.

公开(公告)号：US20220417480A1

公开(公告)日：2022-12-29

申请号：US17848532

申请日：2022-06-24

Applicant: SEIKO EPSON CORPORATION

Inventor： Toru AOKI ,  Hiroyuki HOSAKA

IPC: H04N9/31

Abstract: A projector including an electro-optical panel in which a plurality of pixels are arrayed, an optical path shifting element configured to change an optical path of light emitted from the plurality of pixels, and a control circuit configured to control a state of the optical path shifting element such that light emitted from a predetermined pixel among the plurality of pixels reaches a first position on a display screen in the first unit period, control a state of the optical path shifting element such that light emitted from the predetermined pixel reaches a second position on the display screen in the second unit period, and control a state of the optical path shifting element in a transition period in which a unit period transitions from the first unit period to the second unit period based on a type of image indicated by an input image signal

公开(公告)号：US20220159224A1

公开(公告)日：2022-05-19

申请号：US17527613

申请日：2021-11-16

Applicant: SEIKO EPSON CORPORATION

Inventor： Toru AOKI ,  Shinichi WAKABAYASHI ,  Masatoshi ITO ,  Daigo HOKAZONO

IPC: H04N9/31 ,  G02F1/13

Abstract: A liquid crystal projector includes a liquid crystal panel configured to generate a modulated image, a sensor configured to detect a temperature of the liquid crystal panel, an optical shift element configured to shift an emission optical path of the modulated image generated by the liquid crystal panel, and a control circuit configured to control a velocity of a shift in the optical shift element according to the temperature detected by the sensor.

公开(公告)号：US20240321159A1

公开(公告)日：2024-09-26

申请号：US18613511

申请日：2024-03-22

Applicant: Seiko Epson Corporation

Inventor： Kazuhisa MIZUSAKO ,  Toru AOKI ,  Yusuke KOMURO

IPC: G09G3/00 ,  G09G3/20 ,  G09G3/36

CPC classification number: G09G3/007 ,  G09G3/002 ,  G09G3/2007 ,  G09G3/3607

Abstract: A projection-type display apparatus including a liquid crystal panel including a plurality of panel pixels, an optical path shifting element configured to shift a position of a projection pixel for each of unit periods, included in one frame period, and a display control circuit configured to control the liquid crystal panel and the optical path shifting element. The display control circuit supplies a data signal to the plurality of panel pixels per the unit period, supplies a signal based on pixel data, as the data signal, to a peripheral panel pixel arranged at a periphery among the plurality of panel pixels in a unit period as a part in one frame period, and supplies a signal having a gray scale level equal to or less than a threshold value as the data signal in a unit period other than the unit period as the part in the one frame period.

公开(公告)号：US20190196244A1

公开(公告)日：2019-06-27

申请号：US16229891

申请日：2018-12-21

Applicant: SEIKO EPSON CORPORATION

Inventor： Jun HIRAI ,  Toru AOKI ,  Shuko YANAGISAWA ,  Shinta ENAMI

IPC: G02F1/1345 ,  H05K1/18 ,  H05K1/11 ,  G03B21/00 ,  G03B33/12

CPC classification number: G02F1/13452 ,  G03B21/006 ,  G03B33/12 ,  H05K1/117 ,  H05K1/189 ,  H05K2201/10136

Abstract: An electro-optical device includes two substrates (a first substrate and a second substrate) respectively having ends overlapped with each other and coupled to an electro-optical panel. Other ends of the two substrates respectively serve as a first terminal region and a second terminal region. The second substrate includes a third extended portion extending linearly to overlap with a first extended portion of the first substrate in a thickness direction, and a fourth extended portion extending to a position different from a position of a second extended portion of the first substrate to allow the first terminal region and the second terminal region to be away from each other in a direction intersecting with an extending direction of the third extended portion and to not overlap with each other in the thickness direction.

公开(公告)号：US20240331600A1

公开(公告)日：2024-10-03

申请号：US18617892

申请日：2024-03-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Toru AOKI ,  Kazuhisa Mizusako ,  Yusuke Komuro

IPC: G09G3/00 ,  G09G3/36

CPC classification number: G09G3/007 ,  G09G3/36 ,  G09G2320/0247

Abstract: A projection type display apparatus includes a liquid crystal panel including a first panel pixel, a liquid crystal panel including a second panel pixel, an optical path shift element that shifts projection positions of the first panel pixel and the second panel pixel, and a display control circuit that controls the liquid crystal panel and the optical path shift element. The display control circuit causes the optical path shift element to shift the projection position from a first unit period to a fourth unit period of one frame period for each unit period. A centroid of a path on which the first panel pixel is projected from the first unit period to the fourth unit period is different from a centroid of a path on which the second panel pixel is projected from the first unit period to the fourth unit period.

公开(公告)号：US20240071270A1

公开(公告)日：2024-02-29

申请号：US18239926

申请日：2023-08-30

Applicant: SEIKO EPSON CORPORATION

Inventor： Toru AOKI ,  Hiroyuki HOSAKA ,  Yusuke KOMURO

IPC: G09G3/00

CPC classification number: G09G3/007 ,  G09G3/002 ,  G09G2340/0407

Abstract: A projection-type display apparatus includes a liquid crystal panel including a panel pixel, an optical path shifting element that shifts a projected pixel projected from the panel pixel, and a display control circuit that controls the liquid crystal panel and the optical path shifting element. The display control circuit supplies, to the liquid crystal panel, the same data signal and controls the projected pixel to be at a same position in a unit period f1-1 and a unit period f2-1 period, and controls the optical path shifting element to cause the position of the projected pixel in each of a unit period f1-2 to a unit period f1-4, to be different from the position of the projected pixel in a respective one of a unit period f2-2 to a unit period f2-4.