公开(公告)号：US20220283472A1

公开(公告)日：2022-09-08

申请号：US17750635

申请日：2022-05-23

Applicant: Japan Display Inc. ,  Panasonic Liquid Crystal Display Co., Ltd.

Inventor： Tohru SASAKI ,  Takahiro OCHIAI

IPC: G02F1/1362 ,  G02F1/1343 ,  G02F1/1333 ,  G02F1/1368 ,  G02F1/1335

Abstract: To form a sufficiently large storage capacitor, a liquid crystal display device includes a liquid crystal display panel having a first substrate, a second substrate, and a liquid crystal held between the first substrate and the second substrate, the liquid crystal display panel having multiple pixels arranged in matrix. The first substrate has, in a transmissive display area provided in each of the pixels, a laminated structure containing a first transparent electrode, a first insulating film, a second transparent electrode, a second insulating film, and a third transparent electrode which are laminated in this order. The first transparent electrode and the second transparent electrode are electrically insulated from each other and together form a first storage capacitor through the first insulating film, and the second transparent electrode and the third transparent electrode are electrically insulated from each other and together form a second storage capacitor through the second insulating film.

公开(公告)号：US11436972B2

公开(公告)日：2022-09-06

申请号：US17412254

申请日：2021-08-26

Applicant: Japan Display Inc.

Inventor： Kazunari Tomizawa

IPC: G09G3/32

Abstract: A driving method of a light emitting device includes that the light emitting device has a plurality of pixels and performs gray-scale display in sections of the sub-frame periods in which one frame period for displaying one frame image is divided into a plurality of sub-frame periods. The driving method includes writing analog gray-scale data to the plurality of pixels to display analog gray-scales in one sub-frame period of the plurality of sub-frame periods, and writing first digital gray-scale data to the plurality of pixels to display first digital gray-scales in a sub-frame period of the same length as the one sub-frame period, and in a sub-frame period different from the one sub-frame period.

公开(公告)号：US20220278137A1

公开(公告)日：2022-09-01

申请号：US17747049

申请日：2022-05-18

Applicant: Japan Display Inc.

Inventor： Hajime WATAKABE ,  Toshihide JINNAI ,  Ryo ONODERA ,  Akihiro HANADA

IPC: H01L27/12 ,  H01L29/66 ,  H01L29/786

Abstract: There is provided a technique that enables a reduction in the display failure of a display device and the improvement of the yields of the display device in a display device that adopts a semiconductor device including a thin film transistor using an oxide semiconductor. A semiconductor device according to an embodiment includes a thin film transistor having an oxide semiconductor. The oxide semiconductor has a drain region, a source region, and a channel region provided between the drain region and the source region. The thin film transistor includes a gate insulating film provided on the channel region, an aluminum oxide film provided on the gate insulating film, an insulating film provided on the aluminum oxide film, and a gate electrode provided on the insulating film.

公开(公告)号：US20220276530A1

公开(公告)日：2022-09-01

申请号：US17747116

申请日：2022-05-18

Applicant: Japan Display Inc. ,  Panasonic Liquid Crystal Display Co., Ltd.

Inventor： Shoichi HIROTA ,  Shinichi KOMURA ,  Yoshifumi SEKIGUCHI ,  Tsunenori YAMAMOTO ,  Masaya ADACHI

IPC: G02F1/1335 ,  H01L27/32 ,  G09G3/36 ,  G02F1/1343 ,  G02F1/1362 ,  G09G3/20

Abstract: A color display device comprises an array of a plurality of sub-pixels including a red sub-pixel, a blue sub-pixel, a first green sub-pixel and a second green sub-pixel. The first green sub-pixel and the second green sub-pixel are smaller than that of the red sub-pixel or the blue sub-pixel. The two adjacent first green sub-pixels are arranged in a first direction, the two adjacent second green sub-pixels are arranged in the first direction. The blue sub-pixel is directly adjacent to the red sub-pixel in a second direction; the blue sub-pixel is directly adjacent to the two first green sub-pixels and the two second green sub-pixels.

公开(公告)号：US11429212B2

公开(公告)日：2022-08-30

申请号：US17025456

申请日：2020-09-18

Applicant: Japan Display Inc.

Inventor： Daisuke Ito ,  Hiroshi Mizuhashi ,  Makoto Hayashi ,  Yasuyuki Teranishi ,  Tadayoshi Katsuta

IPC: G06F3/041 ,  G06F3/044 ,  G02F1/133 ,  G02F1/1343 ,  G09G3/36 ,  G02F1/1333

Abstract: A touch detection device is provided and includes driving electrodes for detecting an external proximity object, extending in first direction and arranged in second direction; first voltage line extending in second direction; second voltage line extending in second direction; third voltage line extending in second direction, third voltage line being narrower in than first voltage line and second voltage line in width; and switching circuit for electrically connecting driving electrodes and first voltage line, second voltage line, or third voltage line.

公开(公告)号：US20220271099A1

公开(公告)日：2022-08-25

申请号：US17743614

申请日：2022-05-13

Applicant: Japan Display Inc.

Inventor： Yuko MATSUMOTO

IPC: H01L27/32

Abstract: A display device according to an embodiment of the present invention includes: a base material including a display region having a plurality of pixels and a frame region; a lower electrode provided in each of the plurality of pixels; an organic material layer arranged on the lower electrode; an upper electrode arranged on the organic material layer and covering the display region; a conductor portion provided in the frame region and connected to the upper electrode; and a rib provided on the conductor portion, wherein the upper electrode is arranged on the conductor portion via the rib, a first contact portion where the upper electrode and the conductor portion contact each other is located in the frame region, the rib has a side surface located at an opposite side of the first contact portion from the display region, and an end portion of the upper electrode faces the side surface.

公开(公告)号：US11422399B2

公开(公告)日：2022-08-23

申请号：US17467599

申请日：2021-09-07

Applicant: Japan Display Inc. ,  Panasonic Liquid Crystal Display Co., Ltd.

Inventor： Eiji Oohira

IPC: G06F3/044 ,  G02F1/1333 ,  G06F3/041 ,  G02F1/1335 ,  G02F1/1339 ,  G02F1/1343 ,  G02F1/1345

Abstract: A portable device and method of manufacturing a display device includes a display panel having a glass substrate and a polarizer adhered to the glass substrate, a touch panel which is made of resin material and adhered to the polarizer of the display panel by a first adhesive material, and a front window which is made of glass and adhered to the touch panel by a second adhesive material. One of the first adhesive material and the second adhesive material is an adhesive sheet, and an other of the first adhesive material and the second adhesive material is an ultraviolet-curing adhesive material.

公开(公告)号：US11422398B2

公开(公告)日：2022-08-23

申请号：US17120910

申请日：2020-12-14

Applicant: Japan Display Inc.

Inventor： Makoto Miyao

IPC: G02F1/1333 ,  G02F1/1334 ,  G02F1/1339 ,  G02F1/1362 ,  G02F1/1368

Abstract: According to one embodiment, a display device includes a first transparent substrate including a first main surface and a second main surface, a second transparent substrate including a third main surface, pixels arrayed in a matrix, a sealant surrounding the pixels without a break, a polymer dispersed liquid crystal layer sealed by the sealant, a third transparent substrate including a first end portion and bonded to the first main surface, and first light sources opposed to the first end portion.

公开(公告)号：US20220262665A1

公开(公告)日：2022-08-18

申请号：US17668398

申请日：2022-02-10

Applicant: Japan Display Inc.

Inventor： Hideaki ABE

IPC: H01L21/683 ,  H01L23/00

Abstract: An element transfer device includes an elastic sheet including a through hole and a pickup portion including a shaft portion, a first head portion at a first end of the shaft portion, and a second head portion at a second end of the shaft portion. The first head portion includes a pickup surface for adhering an element. The shaft portion is inserted into the through hole. The first head portion and the second head portion sandwich the elastic sheet. An outer diameter of the first head portion and an outer diameter of the second head portion are larger than an opening diameter of the through hole.

公开(公告)号：US20220262158A1

公开(公告)日：2022-08-18

申请号：US17725766

申请日：2022-04-21

Applicant: Japan Display Inc.

Inventor： Tadayoshi KATSUTA

IPC: G06V40/13

Abstract: A detection device includes: a sensor in which detection elements each including a photoelectric conversion element are arranged in a detection region; a drive circuit configured to supply drive signals to the detection elements; and a detection circuit configured to process a detection signal output from each detection element. Each detection element includes: a source follower transistor configured to output a signal corresponding to an electric charge generated in the photoelectric conversion element; and a read transistor configured to read an output signal of the source follower transistor and output the detection signal. A potential obtained by superimposing a threshold voltage of the source follower transistor and a voltage drop caused by on-resistance of the read transistor on a reset potential serving as a reference value for a voltage variation amount of the detection signal is set as an initial value of a potential applied to the photoelectric conversion element.