Japan Display Inc. patent applications on May 8th, 2025

Patent Applications by Japan Display Inc. on May 8th, 2025

Japan Display Inc.: 19 patent applications

Japan Display Inc. has applied for patents in the areas of G02F1/1343 (5), G02F1/1362 (4), C23C14/34 (2), G02F1/1339 (2), C23C14/50 (2) G02F1/134309 (2), C23C14/3414 (1), G02F1/13756 (1), H10K50/844 (1), H10F39/12 (1)

With keywords such as: layer, electrode, wiring, patch, substrate, surface, electrodes, direction, light, and side in patent application abstracts.

Patent Applications by Japan Display Inc.

20250146125. FILM FORMATION APPARATUS_simplified_abstract_(japan display inc.)

Inventor(s): Masanobu IKEDA of Tokyo JP for japan display inc., Masumi NISHIMURA of Tokyo JP for japan display inc.

IPC Code(s): C23C14/34, C23C14/50, C23C14/54

CPC Code(s): C23C14/3414

Abstract: a film formation apparatus includes a vacuum chamber, a substrate support portion and a target support portion provided in the vacuum chamber, a sputtering gas supply unit for supplying a sputtering gas to the vacuum chamber, a sputtering power supply, a first radical supply source connected to the vacuum chamber and configured to be capable of supplying at least one of nitrogen radicals generated from an ngas and hydrogen radicals generated from an hgas to the vacuum chamber, a second radical supply source connected to the vacuum chamber and configured to be capable of supplying sih3 radicals to the vacuum chamber, and a control unit configured to control the sputtering gas supply unit, the sputtering power supply, the first radical supply source, and the second radical supply source.

20250146127. FILM FORMATION APPARATUS AND FILM FORMATION METHOD OF GALLIUM NITRIDE FILM_simplified_abstract_(japan display inc.)

Inventor(s): Masanobu IKEDA of Tokyo JP for japan display inc.

IPC Code(s): C23C14/58, C03C17/22, C23C14/06, C23C14/34, C23C14/50, C23C14/54, H01J37/32, H01J37/34, H01L21/02

CPC Code(s): C23C14/5873

Abstract: a film formation apparatus includes a vacuum chamber, a substrate support portion for supporting a substrate, a target support portion for supporting a target containing nitrogen and gallium, a sputtering gas supply unit for supplying a sputtering gas, a sputtering power source for applying a voltage to the target, a first radical supply source for supplying nitrogen radicals and hydrogen radicals, and a control unit. the control unit controls the sputtering gas supply unit, the sputtering power source, and the first radical supply source so that a first period in which the sputtering gas, the nitrogen radicals, and the hydrogen radicals are supplied to the vacuum chamber and a voltage is applied to the target and a second period in which the nitrogen radicals and the hydrogen radicals are not supplied to the vacuum chamber and a voltage is applied to the target are repeated.

20250146648. LIGHTING DEVICE_simplified_abstract_(japan display inc.)

Inventor(s): Masafumi OKADA of Tokyo JP for japan display inc., Nobuyuki SUZUKI of Tokyo JP for japan display inc., Makoto HASEGAWA of Tokyo JP for japan display inc.

IPC Code(s): F21V13/04, F21Y115/10, G02B17/08

CPC Code(s): F21V13/04

Abstract: the incident surface is the inner surface of a recess including a bottom surface and an inwardly convex inner side. a tangent line on the free-form curve forms a smaller angle with the optical axis at a point closer to the bottom surface and a larger angle with the optical axis at a point farther from the bottom surface. the free-form curve has a curvature that is not constant. the curvature is maximized at a depth of one-third or less of a depth of the recess. the light enters the bottom surface only at a light distribution angle of three degrees. the light enters the inner side at a light distribution angle of more than three degrees. light incident on the bottom surface exits through the emitting surface. light incident on the inner side reflects off the outer side and exits through the emitting surface.

20250146928. DETECTION DEVICE_simplified_abstract_(japan display inc.)

Inventor(s): Tomoyuki ISHIHARA of Tokyo JP for japan display inc., Akihiko FUJISAWA of Tokyo JP for japan display inc., Chikyu NAKAOKA of Tokyo JP for japan display inc., Tsutomu HARADA of Tokyo JP for japan display inc., Kaoru ITO of Tokyo JP for japan display inc., Norio MAMBA of Tokyo JP for japan display inc.

IPC Code(s): G01N21/17

CPC Code(s): G01N21/17

Abstract: according to an aspect, a detection device includes: a plurality of photodiodes provided on a substrate; a plurality of light emitters arranged so as to face the photodiodes; and a collimating lens that is located between the photodiodes and the light emitters and is configured to emit parallel light toward the photodiodes. at least one of the light emitters is configured to be brought into a lit state and other of the light emitters are configured to be brought into an unlit state. the collimating lens is configured to emit the parallel light at a different emission angle depending on a position of the light emitter in the lit state.

20250146940. INSPECTION METHOD OF LIGHT-EMITTING ELEMENT_simplified_abstract_(japan display inc.)

Inventor(s): Masanobu IKEDA of Tokyo JP for japan display inc.

IPC Code(s): G01N21/64, G01N21/66

CPC Code(s): G01N21/6489

Abstract: disclosed is a method for inspecting a light-emitting element, the method including: forming a buffer layer over an amorphous substrate; forming, over the buffer layer, an n-type cladding layer, an emission layer, and a p-type cladding layer each including an inorganic semiconductor to form a plurality of semiconductor layers arranged in a matrix form having a plurality of rows and a plurality of columns; forming an anode and a cathode over each of the plurality of semiconductor layers to form a plurality of light-emitting elements; and acquiring at least one of a photoluminescence property or an electroluminescence property of the plurality of light-emitting elements using a first detector and a second detector. the buffer layer has a function to promote crystallization of the semiconductor layers. the photoluminescence property is acquired before forming the anode and the cathode. the electroluminescence property is acquired after forming the anode and the cathode.

20250147347. METHOD FOR INSPECTING REFLECTING DEVICE_simplified_abstract_(japan display inc.)

Inventor(s): Daiichi SUZUKI of Tokyo JP for japan display inc., Shinichiro OKA of Tokyo JP for japan display inc., Mitsutaka OKITA of Tokyo JP for japan display inc.

IPC Code(s): G02F1/13, G01R29/08

CPC Code(s): G02F1/1309

Abstract: a method for inspecting a reflecting device, which has a plurality of reflecting elements arrayed in a matrix, each of the plurality of reflecting elements comprises a patch electrode, a common electrode on a back side of the patch electrode, and a liquid crystal layer between the patch electrode and the common electrode, a first voltage v is applied between one of the plurality of patch electrodes and the common electrode, and whether the reflecting element is good or bad is determined based on changes in a frame region that appears around a periphery of one of the plurality of patch electrodes in a top view when a voltage is applied between one of the plurality of patch electrodes and the common electrode.

20250147356. DISPLAY DEVICE_simplified_abstract_(japan display inc.)

Inventor(s): Shunichi KIMURA of Tokyo JP for japan display inc., Toshiharu MATSUSHIMA of Tokyo JP for japan display inc., Jin HIROSAWA of Tokyo JP for japan display inc., Yuji MAEDE of Tokyo JP for japan display inc.

IPC Code(s): G02F1/1335, G02F1/1343

CPC Code(s): G02F1/133526

Abstract: according to one embodiment, an optical control element includes a plurality of lens forming regions along a first direction and a second direction orthogonal to the first direction, each of the lens forming regions includes an annularly shaped second electrode and a circularly shaped first electrode provided on an inner side of the second electrode, a plurality of first wiring lines connected to the first electrodes each include a first stem portion extending in a zigzag shape along the second direction and a plurality of first branch portions extending from the first stem, and each of the first branch portions overlap the plurality of first electrodes, respectively.

20250147364. DISPLAY DEVICE_simplified_abstract_(japan display inc.)

Inventor(s): Tenfu NAKAMURA of Tokyo JP for japan display inc.

IPC Code(s): G02F1/1343, G02F1/1334, G02F1/1362, G02F1/1368

CPC Code(s): G02F1/134309

Abstract: according to one embodiment, in a display device, the display panel includes pixels each including first pixels and second pixels, each of the first pixels has a transparent layer that has a refractive index lower than those of a first substrate and a second substrate and is in contact with a common electrode, each of the second pixels includes a first insulating layer that has a refractive index higher than that of the transparent layer and is in contact with the common electrode.

20250147365. LIQUID CRYSTAL PANEL_simplified_abstract_(japan display inc.)

Inventor(s): Shunichi KIMURA of Tokyo JP for japan display inc., Toshiharu MATSUSHIMA of Tokyo JP for japan display inc., Yuji MAEDE of Tokyo JP for japan display inc.

IPC Code(s): G02F1/1343

CPC Code(s): G02F1/134309

Abstract: a liquid crystal panel includes two substrates and a liquid crystal between the two substrates. a first substrate as one of the two substrates includes: a potential gradient forming section having an outer periphery edge having a circular shape; a first electrode provided on an inner periphery side of the potential gradient forming section; a second electrode provided on an outer periphery side of the potential gradient forming section and having a ring-like shape; a first transmission section provided with a potential; a second transmission section provided with another potential; a first contact coupling the first electrode and the first transmission section; and a second contact coupling the second electrode and the second transmission section. the potential gradient forming section is made of a conductor having an electrical resistance higher than those of the first and second electrodes. a plurality of the second contacts are provided for the second electrode.

20250147368. DISPLAY DEVICE_simplified_abstract_(japan display inc.)

Inventor(s): Hiroyuki ABE of Tokyo JP for japan display inc., Kentaro AGATA of Tokyo JP for japan display inc.

IPC Code(s): G02F1/1362, G02F1/1333, G02F1/1339, G02F1/1345, G09G3/36

CPC Code(s): G02F1/136286

Abstract: it is possible to reduce a size of a lower frame region to ensure a wiring corrosion margin equivalent to that of a conventional technique. in a display device, a video signal wiring arranged in the lower frame region includes, in a region between a terminal section (terminal) and a video signal line, a first wiring formed on a first wiring layer and having one end connected to the terminal section to which a video signal line driving circuit is connected, a second wiring formed on a second wiring layer different from the first wiring layer and having one end connected to the other end of the first wiring, and a third wiring formed on the first wiring layer and having one end connected to the other end of the second wiring. the other end of the third wiring is connected to the video signal line via a fourth wiring formed on the second wiring layer, and the first wiring layer is formed on the side closer to an array substrate than to the second wiring layer.

20250147369. DISPLAY DEVICE_simplified_abstract_(japan display inc.)

Inventor(s): Akihiro HANADA of Tokyo JP for japan display inc., Takuo KAITOH of Tokyo JP for japan display inc., Motochika YUKAWA of Tokyo JP for japan display inc.

IPC Code(s): G02F1/1368, G02F1/1362

CPC Code(s): G02F1/1368

Abstract: a display device includes a first pixel including a transistor having an oxide semiconductor layer, a first gate wiring, and a first source wiring. the first gate wiring includes a first part of a first conductive, and extends in a first direction. the first source wiring includes a first part of a second conductive layer and a first part of a third conductive layer connected to the first part of the second conductive layer, and extends in a second direction intersecting the first direction. a thickness of the second conductive layer is thinner than a thickness of the first conductive layer and thinner than a thickness of the third conductive layer.

20250147372. DISPLAY DEVICE_simplified_abstract_(japan display inc.)

Inventor(s): Yuta WAKABAYASHI of Tokyo JP for japan display inc., Yasuyuki HANAZAWA of Tokyo JP for japan display inc., Michikazu NOGUCHI of Tokyo JP for japan display inc., Ryou SHIMMEN of Tokyo JP for japan display inc.

IPC Code(s): G02F1/137, G02F1/1333, G02F1/1334, G02F1/1339, G02F1/1343, G02F1/1362

CPC Code(s): G02F1/13756

Abstract: according to one embodiment, a display device includes an array substrate, a first cover member and a first adhesive layer. the array substrate includes first and second main surfaces and a first side surface. the first cover member includes third and fourth main surfaces and a second side surface. the first adhesive layer attaches the first and third main surfaces. the array substrate further includes a display area and a mounting area between the first side surface and the display area. the first cover member includes a protruding portion which protrudes relative to the first side surface.

20250148824. DETECTION DEVICE_simplified_abstract_(japan display inc.)

Inventor(s): Akihiko FUJISAWA of Tokyo JP for japan display inc., Takaaki KONO of Tokyo JP for japan display inc.

IPC Code(s): G06V40/13, H10K39/32

CPC Code(s): G06V40/1318

Abstract: a detection device includes a sensor circuit provided with a first photodiode in a semiconductor layer, and a signal detector configured to acquire a detection value corresponding to a signal output from the sensor circuit. the signal detector includes a first detection circuit coupled to one end of the first photodiode, a first switch circuit configured to apply a power supply potential to another end of the first photodiode, and a second switch circuit configured to short both ends of the first photodiode.

20250149786. DRIVING METHOD OF INTELLIGENT REFLECTING SURFACE_simplified_abstract_(japan display inc.)

Inventor(s): Mitsutaka OKITA of Tokyo JP for japan display inc., Shinichiro OKA of Tokyo JP for japan display inc., Daiichi SUZUKI of Tokyo JP for japan display inc., Hiromi MATSUNO of Saitama JP for japan display inc., Takuya OHTO of Saitama JP for japan display inc., Yoshiaki AMANO of Saitama JP for japan display inc.

IPC Code(s): H01Q3/46

CPC Code(s): H01Q3/46

Abstract: a driving method of an intelligent reflecting surface having a plurality of reflecting elements arranged in a matrix, the method includes dividing the plurality of reflecting elements arranged in the matrix into a first region that controls an amount of phase change for each row of the plurality of reflecting elements arrayed in a row direction and a second region that controls an amount of phase change for every two adjacent rows of a plurality of reflecting elements arrayed in the row direction, and driving each of the plurality of reflecting elements belonging to the first region

20250149800. REFLECTING DEVICE_simplified_abstract_(japan display inc.)

Inventor(s): Daiichi SUZUKI of Tokyo JP for japan display inc., Shinichiro OKA of Tokyo JP for japan display inc., Mitsutaka OKITA of Tokyo JP for japan display inc.

IPC Code(s): H01Q15/14, G02F1/1343

CPC Code(s): H01Q15/147

Abstract: a reflecting device includes a plurality of first patch electrodes, a plurality of second patch electrodes having a size different from a size of the first patch electrodes, a ground electrode opposing the plurality of first patch electrodes and the plurality of second patch electrodes and separated from the plurality of first patch electrodes and the plurality of second patch electrodes, and a liquid crystal layer between the plurality of first patch electrodes and the plurality of second patch electrodes and the ground electrode, wherein the plurality of first patch electrodes and the plurality of second patch electrodes are arranged alternately in a first direction or a second direction intersecting the first direction, and each first patch electrode is adjacent to each second patch electrode in the first direction or the second direction.

20250151192. FLEXIBLE SUBSTRATE_simplified_abstract_(japan display inc.)

Inventor(s): Takumi SANO of Tokyo JP for japan display inc., Yosuke HYODO of Tokyo JP for japan display inc.

IPC Code(s): H05K1/02, H05K1/18

CPC Code(s): H05K1/0296

Abstract: according to one embodiment, a flexible substrate including, an insulating base including first strip portions, second strip portions, and island-shaped portions each located at an intersection between the first strip portions and the second strip portions, electrical elements overlapping the island-shaped portions, respectively, scanning lines extending while overlapping the first strip portions, respectively, signal lines extending while overlapping the second strip portions, respectively, a first organic insulating film, a second organic insulating film, a stopper layer located between the first and second organic insulating film, and a barrier layer located on the second organic insulating film.

20250151423. DETECTION DEVICE_simplified_abstract_(japan display inc.)

Inventor(s): Akihiko FUJISAWA of Tokyo JP for japan display inc., Kaoru ITO of Tokyo JP for japan display inc., Shiori SEINO of Tokyo JP for japan display inc.

IPC Code(s): H10F39/12, H04N25/75, H04N25/772, H10F39/00

CPC Code(s): H10F39/12

Abstract: according to an aspect, a detection device includes: a photodiode provided on a substrate; a light source disposed so as to face the photodiode; and a liquid crystal panel disposed between the photodiode and the light source in a direction orthogonal to the substrate. the liquid crystal panel includes a plurality of pixels. in plan view, the photodiode has a size larger than a size of each of the pixels, and the photodiode is disposed in a position overlapping the pixels. the liquid crystal panel is configured to bring at least one of the pixels overlapping the photodiode into a transmitting state and bring another of the pixels into a non-transmitting state.

20250151511. ORGANIC ELECTROLUMINESCENCE DISPLAY DEVICE_simplified_abstract_(japan display inc.)

Inventor(s): Takayasu SUZUKI of Tokyo JP for japan display inc., Toshihiro SATO of Tokyo JP for japan display inc.

IPC Code(s): H10K50/844, H10K50/84, H10K50/842, H10K59/124, H10K71/50

CPC Code(s): H10K50/844

Abstract: a display device includes: a resin layer on the circuit layer including a groove surrounding and separating a display area; light-emitting elements on an upper surface of the resin layer so as to emit light with luminances controlled by the currents; a sealing layer covering the light-emitting elements; a second substrate above the sealing layer; a sealing material provided between the sealing layer and the second substrate so as to surround the display area and the groove; and a filling layer surrounded by the sealing material between the sealing layer and the second substrate. the groove is formed along a line describing a shape that is inscribed in a rectangle and not in contact with corners of the rectangle as viewed in a direction vertical to the upper surface of the resin layer.

20250151519. DISPLAY DEVICE_simplified_abstract_(japan display inc.)

Inventor(s): Yuko MATSUMOTO of Tokyo JP for japan display inc.

IPC Code(s): H10K59/121, H10K59/131

CPC Code(s): H10K59/121

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.

Japan Display Inc. patent applications on May 8th, 2025