公开(公告)号：US20220100014A1

公开(公告)日：2022-03-31

申请号：US17486927

申请日：2021-09-28

Applicant: SEIKO EPSON CORPORATION

Inventor： Yohei SUGIMOTO

IPC: G02F1/1368 ,  G02F1/1362

Abstract: In an electro-optical device, a first light shielding wall and a second light shielding wall electrically couple a gate electrode and a scan line inside a first groove and a second groove that pass through a side of a semiconductor film of a transistor and reach a scan line on a lower layer side. A first protruding portion and a second protruding portion for contact with an upper layer side are provided at the semiconductor film. Of the first light shielding wall and the second light shielding wall, the second light shielding wall located on an opposite side to a projection direction of the first protruding portion extends to at least a side of the first protruding portion, and the first light shielding wall located on an opposite side to a projection direction of the second protruding portion extends to at least a side of the second protruding portion.

公开(公告)号：US20200075774A1

公开(公告)日：2020-03-05

申请号：US16556478

申请日：2019-08-30

Applicant: SEIKO EPSON CORPORATION

Inventor： Yohei SUGIMOTO

IPC: H01L29/786 ,  H01L27/12 ,  G02F1/1362 ,  G02F1/1368

Abstract: An electro-optical device includes a base material as a substrate, a TFT as a transistor, a scanning line as a light shielding layer between the base material and the TFT, and a holding capacitor between the base material and the scanning line. The holding capacitor includes a first conductive layer, a second conductive layer provided on the first conductive layer via a first capacitor insulating layer, a third conductive layer electrically connected to the second conductive layer via a first contact hole provided in an insulating layer covering the second conductive layer, and a fourth conductive layer provided on the third conductive layer via a second capacitor insulating layer.

公开(公告)号：US20240361656A1

公开(公告)日：2024-10-31

申请号：US18645387

申请日：2024-04-25

Applicant: SEIKO EPSON CORPORATION

Inventor： Yohei SUGIMOTO

IPC: G02F1/1362

CPC classification number: G02F1/13629 ,  G02F2201/123

Abstract: An electro-optic apparatus includes a substrate; a first conductive member disposed on one side of the substrate; a pixel electrode; a second conductive member disposed outside of a display region; a dummy pixel electrode; and an insulating layer disposed between the pixel electrode and the dummy pixel electrode, and the substrate. The pixel electrode includes a first pixel electrode layer overlapping the first conductive member, and a second pixel electrode layer, overlapping an opening region of a pixel, thinner than the first pixel electrode layer. The dummy pixel electrode includes a first dummy pixel electrode layer overlapping the second conductive member, and a second dummy pixel electrode layer, overlapping the first dummy pixel electrode layer, thinner than the first dummy pixel electrode layer. The insulating layer and the first dummy pixel electrode layer in a portion not overlapping the second conductive member face each other with a gap therebetween.

公开(公告)号：US20220269140A1

公开(公告)日：2022-08-25

申请号：US17678008

申请日：2022-02-23

Applicant: SEIKO EPSON CORPORATION

Inventor： Yohei SUGIMOTO

IPC: G02F1/1362 ,  G02F1/1368 ,  G02F1/1343 ,  G02F1/1333 ,  H01L27/12 ,  H01L29/786

Abstract: Provided are a scanning line extending along a first direction, a data line extending along a second direction intersecting the first direction, a TFT having a semiconductor layer including one source drain region and a channel region extending along the first direction, at a position overlapping the scanning line in plan view, and another source drain region extending along the second direction, at a position overlapping the data line in plan view, and a first capacitance element and a second capacitance element disposed at a position overlapping the data line, and the first capacitance element and the second capacitance element are configured to include a part of the semiconductor layer.

公开(公告)号：US20180203314A1

公开(公告)日：2018-07-19

申请号：US15863219

申请日：2018-01-05

Applicant: SEIKO EPSON CORPORATION

Inventor： Yohei SUGIMOTO

IPC: G02F1/1362 ,  H01L27/12 ,  H01L29/786 ,  H01L49/02 ,  G02F1/1368

CPC classification number: G02F1/136213 ,  G02F1/133512 ,  G02F1/1339 ,  G02F1/13439 ,  G02F1/1368 ,  G02F2201/121 ,  H01L27/1222 ,  H01L27/1255 ,  H01L27/1259 ,  H01L28/91 ,  H01L29/78621 ,  H01L29/78633 ,  H01L29/78675

Abstract: A liquid crystal device as an electro-optical device includes a first insulating layer as a first layer with an insulating property stacked on a base member as a substrate, a trench provided in the first insulating layer for each pixel, a second insulating layer as a second layer stacked on the first insulating layer and having an aperture communicating with the trench, and a retention capacitor as a capacitance element including a first capacitance electrode, a first capacitance insulating film, and a second capacitance electrode which are provided on at least an inner side the trench and the aperture. A layer thickness of the first insulating layer is larger than a layer thickness of the second insulating layer, and a width of the trench is larger than a width of the aperture in the X direction as a first direction.

公开(公告)号：US20220035210A1

公开(公告)日：2022-02-03

申请号：US17386582

申请日：2021-07-28

Applicant: SEIKO EPSON CORPORATION

Inventor： Yohei SUGIMOTO

IPC: G02F1/1362 ,  G02F1/1368

Abstract: In an electro-optical device, at a position overlapping in plan view with a data line, a groove is provided that extends through a first interlayer insulating film provided in a layer between a scan line and a transistor, and a second interlayer insulating film provided in a layer between the transistor and a pixel electrode, and reaches a substrate body. A capacitance element includes a first element portion provided between the second interlayer insulating film and the pixel electrode, and a second element portion provided along an inner wall of the groove. The groove reaches an intermediate position in a thickness direction of the substrate body, and a depth is 3 μm or greater. Therefore, capacitance of the capacitance element is large. A contact hole that electrically couples a gate electrode and the scan line is provided on a side of a semiconductor film.

公开(公告)号：US20210311355A1

公开(公告)日：2021-10-07

申请号：US17224074

申请日：2021-04-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Yohei SUGIMOTO

IPC: G02F1/1335 ,  G02F1/1368

Abstract: An electro-optical device includes a first member having a translucent property, a second member having a translucent property and opposed to the first member with a space being disposed therebetween, and a plurality of pixel electrodes provided at an opposite side from the first member with respect to the second member. The first member includes a substrate body. The second member includes a transparent film. A plurality of lens surfaces having a protruding curved surface and each overlapping, in plan view, with corresponding one of the plurality of pixel electrodes are formed at a surface of the second member that is opposed to the first member. A pillar that extends through the space and is in contact with the first member and the second member is provided between the first member and the second member. The space can be formed by removing a sacrificial layer provided between the first member and the second member.

公开(公告)号：US20210311350A1

公开(公告)日：2021-10-07

申请号：US17224079

申请日：2021-04-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Yohei SUGIMOTO

IPC: G02F1/1333 ,  G03B21/14 ,  G03B21/16 ,  G03B21/00 ,  G02F1/1335

Abstract: An electro-optical device includes an electro-optical panel and a frame configured to support the electro-optical panel. The electro-optical panel includes a first member being a translucent substrate body, a second member being a translucent film and opposed to the first member, and pixel electrodes provided at an opposite side from the first member with respect to the second member. Lens surfaces having a protruding curved surface and each overlapping, in plan view, with each one of pixel electrodes are formed at a surface of the second member that is opposed to the first member. Since an inlet passage and an outlet passage, each of which communicates with the space, are formed between the first member and the second member, a refrigerant is caused to pass through the space by way of the frame, whereby it is possible to cool the electro-optical panel.

公开(公告)号：US20210116766A1

公开(公告)日：2021-04-22

申请号：US17075137

申请日：2020-10-20

Applicant: SEIKO EPSON CORPORATION

Inventor： Yohei SUGIMOTO

IPC: G02F1/1362 ,  G02F1/1333 ,  H01L27/12 ,  H01L29/786 ,  H01L29/66 ,  H01L29/49 ,  G02F1/1368

Abstract: A liquid crystal apparatus includes a scan line extending in a ±X direction, a data line extending in a ±Y direction that intersects with the ±X direction, a TFT having a semiconductor layer in which, at a position overlapping with the scan line in plan view, one source drain region and a channel region extend along the ±X direction, and at a position overlapping with the data line in plan view, another source drain region extends along the ±Y direction, and a first upper capacitance element and a second upper capacitance element provided at a position overlapping with the data line, so as to overlap with the other source drain region in plan view.

公开(公告)号：US20240361655A1

公开(公告)日：2024-10-31

申请号：US18645393

申请日：2024-04-25

Applicant: SEIKO EPSON CORPORATION

Inventor： Yohei SUGIMOTO

IPC: G02F1/1362 ,  G02F1/1368 ,  H04N9/31

CPC classification number: G02F1/136286 ,  G02F1/136213 ,  G02F1/1368 ,  H04N9/3105

Abstract: An electrooptic apparatus includes a substrate, a first conductive member provided on one side of the substrate, a first pixel electrode electrically coupled to the first conductive member, a second conductive member provided on the one side of the substrate, and disposed further close to an edge of the substrate than the first pixel electrode, and a second pixel electrode electrically coupled to the second conductive member. The second pixel electrode includes a first portion not electrically coupled to the second conductive member, and a second portion electrically coupled to the second conductive member and disposed around and spaced apart from the first portion in plan view.