Patents Assigned to Japan Display Inc.
-
Patent number: 12249530Abstract: According to one embodiment, a wafer for electronic components, includes a sapphire substrate including a first surface and a second surface on an opposite side to the first surface and a plurality of electronic components located on a side of the first surface, and the sapphire substrate includes trench portions located between respective adjacent electronic components, and the trench portions extend linearly in plan view.Type: GrantFiled: April 13, 2022Date of Patent: March 11, 2025Assignee: JAPAN DISPLAY INC.Inventors: Kenichi Takemasa, Kazuyuki Yamada, Keisuke Asada, Daiki Isono
-
Patent number: 12248227Abstract: In a method for driving an optical element including a first liquid crystal cell, the first liquid crystal cell includes a first substrate on which first and second transparent electrodes are arranged in a first direction, a second substrate on which third and fourth transparent electrodes are arranged in a second direction, and a first liquid crystal layer between the first substrate and the second substrate, and the method includes the steps of inputting a first signal to the first transparent electrode, inputting a second signal having a phase difference of ? with respect to the first signal to the second transparent electrode, inputting a third signal having a phase difference of ? with respect to the first signal to the third transparent electrode, and inputting a fourth signal having a phase difference of ? with respect to the third signal to the fourth transparent electrode.Type: GrantFiled: February 12, 2024Date of Patent: March 11, 2025Assignee: Japan Display Inc.Inventors: Takayuki Imai, Kojiro Ikeda, Takeo Koito
-
Patent number: 12249654Abstract: A semiconductor device including a first oxide semiconductor layer, a first gate electrode opposing the first oxide semiconductor layer, a first gate insulating layer between the first oxide semiconductor layer and the first gate electrode, a first insulating layer covering the first oxide semiconductor layer and having a first opening, a first conductive layer above the first insulating layer and in the first opening, the first conductive layer being electrically connected to the first oxide semiconductor layer, and an oxide layer between an upper surface of the first insulating layer and the first conductive layer, wherein the first insulating layer is exposed from the oxide layer in a region not overlapping the first conductive layer in a plan view.Type: GrantFiled: August 10, 2023Date of Patent: March 11, 2025Assignee: Japan Display Inc.Inventors: Yohei Yamaguchi, Yuichiro Hanyu, Hiroki Hidaka
-
Patent number: 12249283Abstract: According to one embodiment, a display apparatus includes a plurality of semiconductor layers, a first insulation film, a first conductive layer, a second insulation film and a display element includes a second conductive layer. The first conductive layer and the second conductive layer are opposed to each other to form a capacitance unit.Type: GrantFiled: January 9, 2024Date of Patent: March 11, 2025Assignee: Japan Display Inc.Inventors: Kazuyoshi Omata, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake
-
Publication number: 20250078774Abstract: According to one embodiment, a display device comprises a display panel, first and second driver chips. The display panel includes first and second edge portions, a display area between the first and second edge portions in a first direction, first signal lines extending to the display area, and second signal lines extending to the display area. The first driver chip is connected to the first edge portion to supply video signals to the first signal lines. The second driver chip is connected to the second edge portion to supply video signals to the second signal lines. Number N of the first signal lines and number M of the second signal lines are alternately arranged in a second direction.Type: ApplicationFiled: November 19, 2024Publication date: March 6, 2025Applicant: Japan Display Inc.Inventors: Tomohide OOHIRA, Yasuhiko YAMAGISHI
-
Publication number: 20250081817Abstract: According to one embodiment, a display device includes a substrate, a display area displaying an image, a surrounding area surrounding the display area, a display element arranged above the substrate, a first sealing layer formed of an inorganic material and covering the display element, a resin layer arranged on the first sealing layer, a second sealing layer formed of an inorganic material and covering the resin layer, a conductive pad arranged in the surrounding area, and a polarizer arranged above the second sealing layer. At least one of an end portion of the first sealing layer and an end portion of the second sealing layer is located closer to the pad than an end portion of the polarizer is.Type: ApplicationFiled: August 28, 2024Publication date: March 6, 2025Applicant: Japan Display Inc.Inventors: Hideyuki TAKAHASHI, Kazuyuki HARADA, Yasuhito ARUGA
-
Publication number: 20250081752Abstract: According to one embodiment, a display device includes display elements each including a lower electrode, an upper electrode and an organic layer between the lower electrode and the upper electrode, a rib which has a plurality of pixel apertures overlapping the display elements, respectively, and a partition which includes a conductive lower portion provided on the rib and an upper portion protruding from a side surface of the lower portion and surrounds each of the display elements. Further, the partition is divided into a plurality of segments for detecting an object which is in contact with or close to a display area including the display elements.Type: ApplicationFiled: September 4, 2024Publication date: March 6, 2025Applicant: Japan Display Inc.Inventors: Hideyuki TAKAHASHI, Hiroyuki KIMURA
-
Publication number: 20250079257Abstract: A gallium nitride-based semiconductor device includes an amorphous glass substrate having a first surface and a second surface opposite to the first surface; a gallium nitride-based semiconductor layer on the first surface of the amorphous glass substrate, and a compensation layer on the second surface of the amorphous glass substrate. A thermal expansion coefficient of the compensation layer is more than a thermal expansion coefficient of the amorphous glass substrate and less than a thermal expansion coefficient of the gallium nitride-based semiconductor layer.Type: ApplicationFiled: November 18, 2024Publication date: March 6, 2025Applicant: Japan Display Inc.Inventors: Masanobu IKEDA, Masumi NISHIMURA
-
Publication number: 20250080712Abstract: A detection system includes a display panel configured to display an image using light from a back surface side, a backlight configured to irradiate the display panel with light from the back surface side, a parallax barrier having a plurality of openings and disposed at a position overlapping the display panel, a sensor region having a detection region and disposed on a back surface of a front plate, a plurality of electrodes provided in the detection region, and a decorative layer having translucency and provided at a position overlapping the detection region and the parallax barrier.Type: ApplicationFiled: September 3, 2024Publication date: March 6, 2025Applicant: Japan Display Inc.Inventors: Takuya NISHIMOTO, Koji YOSHIDA, Makoto ISHIKAWA
-
Publication number: 20250076702Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate includes first pixels overlapping with a display area and second pixels overlapping with a surrounding area, color filters corresponding to each of the first pixels, and a first light-shielding layer including an aperture overlapping with each of the first and second pixels. The second substrate includes a second light-shielding layer surrounding the display area. The width of the first light-shielding layer arranged at a position overlapping with an end portion of the display area is greater than a width between apertures overlapping with each of first pixels adjacent to each other.Type: ApplicationFiled: August 20, 2024Publication date: March 6, 2025Applicant: Japan Display Inc.Inventors: Tomokazu ISHIKAWA, Masaru NAKAKOMI, Masateru MORIMOTO
-
Publication number: 20250076718Abstract: A display device includes a first transistor including a first material as a semiconductor material and including a first gate electrode, a second transistor including a second material as a semiconductor material different from the first material and including a second gate electrode arranged in a different layer from the first gate electrode, a first wiring arranged in the same layer as the first gate electrode, a second wiring arranged in the same layer as the second gate electrode, and a third wiring formed in the same layer as a source electrode or a drain electrode of the second transistor and different from the first wiring and the second wiring. The first wiring, the second wiring and the third wiring overlap in a plan view.Type: ApplicationFiled: August 23, 2024Publication date: March 6, 2025Applicant: Japan Display Inc.Inventors: Hiroyuki ABE, Akihiko SAITOH
-
Publication number: 20250081618Abstract: In a transistor substrate of a display device, a plurality of signal lines to which any one of drive signals of a gate signal and a video signal is supplied include a plurality of first signal lines to which the drive signal is supplied. The first signal line is connected to a driving driver, and is formed in an edge region positioned between an end portion of a substrate and a pixel region and in the pixel region. The first signal line is formed to pass through a first wiring formed in a first layer from a second wiring formed in a second layer in the edge region.Type: ApplicationFiled: November 19, 2024Publication date: March 6, 2025Applicant: Japan Display Inc.Inventors: Gen KOIDE, Masaki MURASE, Nobuyuki ISHIGE
-
Publication number: 20250081750Abstract: According to one embodiment, a display device includes a partition which is provided between each adjacent pair of display elements in a display area, an electrode layer provided in a surrounding area, a conductive layer provided above the electrode layer, and an inorganic insulating layer provided between the electrode layer and the conductive layer. The partition and the conductive layer include a conductive lower portion and an upper portion which protrudes from side surfaces of the lower portion. The electrode layer includes an electrode aperture penetrating in a stacking direction. The conductive layer overlaps with the electrode aperture.Type: ApplicationFiled: August 7, 2024Publication date: March 6, 2025Applicant: Japan Display Inc.Inventors: Kazuyuki HARADA, Hiroshi TABATAKE, Hideyuki TAKAHASHI, Takamitsu FUJIMOTO
-
Publication number: 20250081808Abstract: According to one embodiment, a display device includes a lower electrode, a rib which has a pixel aperture overlapping the lower electrode and covers an end portion of the lower electrode, a partition which includes a bottom portion the rib, a lower portion on the bottom portion, and an upper portion on the lower portion and protruding from a side surface of the lower portion, an organic layer which is in contact with the lower electrode through the pixel aperture, an upper electrode which covers the organic layer and is in contact with at least one of the bottom portion and the lower portion, and a transparent conductive oxide layer provided between the rib and the bottom portion.Type: ApplicationFiled: August 1, 2024Publication date: March 6, 2025Applicant: Japan Display Inc.Inventor: Kaichi FUKUDA
-
Publication number: 20250081540Abstract: A thin film transistor includes an oxide semiconductor layer having a polycrystalline structure over a substrate, a gate electrode over the oxide semiconductor layer, and a gate insulating layer between the oxide semiconductor layer and the gate electrode. The oxide semiconductor layer includes a first region having a first carrier concentration and overlapping the gate electrode, a second region having a second carrier concentration and not overlapping the gate electrode, and a third region between the first region and the second region and overlapping the gate electrode. The second carrier concentration is larger than the first carrier concentration. A carrier concentration of the third region decreases from the second region to the first region in a channel length direction. A length of the third region is greater than or equal to 0.00 ?m and less than or equal to 0.60 ?m in the channel length direction.Type: ApplicationFiled: November 18, 2024Publication date: March 6, 2025Applicants: Japan Display Inc., IDEMITSU KOSAN CO., LTD.Inventors: Hajime WATAKABE, Masashi TSUBUKU, Toshinari SASAKI, Takaya TAMARU, Emi KAWASHIMA, Yuki TSURUMA, Daichi SASAKI
-
Publication number: 20250081617Abstract: A display device having a plurality of pixels arranged in a matrix along a first direction and a second direction intersecting the first direction, each of the plurality of pixels includes, a transistor including an oxide semiconductor layer, a gate wiring extending in the first direction opposite the oxide semiconductor layer, and a gate insulating layer between the oxide semiconductor layer and the gate wiring, a first conductive layer provided on at least one first insulating layer above the transistor and in contact with the oxide semiconductor layer, a second insulating layer provided on the first conductive layer, a first inorganic layer provided on the second insulating layer and having openings therein, and a second inorganic layer provided on the first inorganic layer and in contact with the second insulating layer in the opening.Type: ApplicationFiled: August 28, 2024Publication date: March 6, 2025Applicant: Japan Display Inc.Inventors: Hajime WATAKABE, Masashi TSUBUKU, Toshinari SASAKI, Akihiro HANADA, Takaya TAMARU, Marina MOCHIZUKI, Masahiro WATABE
-
Patent number: 12243889Abstract: According to one embodiment, a detection device includes a substrate, a photoelectric conversion element provided on the substrate and including a semiconductor layer, a transistor provided to correspond to the photoelectric conversion element, and a green color filter provided above the photoelectric conversion element.Type: GrantFiled: May 2, 2022Date of Patent: March 4, 2025Assignee: Japan Display Inc.Inventors: Yoshitaka Ozeki, Seiji Uejima, Hiroyuki Watabe
-
Patent number: 12242701Abstract: A touch panel, a display panel, and a display unit achieving prevention of erroneous detection caused by external noise. The touch panel includes: a plurality of detection scan electrodes extending in a first direction and a plurality of detection electrodes facing the plurality of detection scan electrodes and extending in a second direction which intersects the first direction. The one or more selected detection scan electrodes are selected, in a desired unit, from the plurality of detection scan electrodes, to be supplied with a selection pulse, and each of the first and the second detection electrodes is selected from the plurality of detection electrodes.Type: GrantFiled: November 2, 2023Date of Patent: March 4, 2025Assignee: JAPAN DISPLAY INC.Inventors: Takayuki Nakanishi, Koji Noguchi, Koji Ishizaki, Yasuyuki Teranishi, Takeya Takeuchi
-
Patent number: 12243879Abstract: The display device has a first substrate having a display area including pixels and a peripheral area surrounding the display area and including a peripheral circuit, a second substrate arranged facing the first substrate, a liquid crystal layer arranged between the first substrate and the second substrate, and a plurality of gate wirings spaced apart in a first direction in the peripheral circuit of the first substrate, and a plurality of signal lines spaced apart in a second direction intersecting the first direction, wherein the second substrate has a black matrix with a lattice area at a position facing the display area and the peripheral circuit, and the lattice area of the black matrix is arranged to overlap the plurality of gate wirings and the plurality of signal lines of the peripheral circuit.Type: GrantFiled: April 5, 2024Date of Patent: March 4, 2025Assignee: JAPAN DISPLAY INC.Inventors: Kentaro Kawai, Yuuji Oomori, Yoshihide Ohue
-
Patent number: 12242681Abstract: A display device includes a substrate, first electrodes, second electrodes, and a driver. The first electrodes are disposed in a matrix (row-column configuration) in a display region of the substrate. The second electrodes are disposed in a peripheral region on the outside of the display region of the substrate. The driver supplies a drive signal to the first electrodes and the second electrodes. The first electrodes output detection signals corresponding to self-capacitance changes in the first electrodes. The second electrodes output detection signals corresponding to self-capacitance changes in the second electrodes.Type: GrantFiled: September 9, 2022Date of Patent: March 4, 2025Assignee: Japan Display Inc.Inventors: Yasuyuki Teranishi, Gen Koide