Patents by Inventor Jun Sakuma
Jun Sakuma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 12660409Abstract: A hole transport layer serving as a target layer includes a part of a region formed between a plurality of lower electrodes and a partition, and includes a first portion and a second portion across at least one of a non-formation portion of the target layer and a region where the target layer is thinner than the target layer on the plurality of lower electrodes in the reverse tapered portion.Type: GrantFiled: June 3, 2021Date of Patent: June 16, 2026Assignee: SHARP KABUSHIKI KAISHAInventors: Jun Sakuma, Yasushi Asaoka
-
Patent number: 12598860Abstract: A light-emitting device includes a first light-emitting layer disposed between a cathode and an anode and having a light emission central wavelength being a first wavelength; a second light-emitting layer disposed between the anode and the first light-emitting layer, having a light emission central wavelength being a second wavelength shorter than the first wavelength, and having an electron affinity lower than an electron affinity of the first light-emitting layer; and a first electron transport layer disposed between the first light-emitting layer and the second light-emitting layer in the second light-emitting region and having magnitude of an electron affinity between an electron affinity of the first light-emitting layer and an electron affinity of the second light-emitting layer.Type: GrantFiled: July 22, 2020Date of Patent: April 7, 2026Assignee: SHARP KABUSHIKI KAISHAInventors: Yasushi Asaoka, Jun Sakuma, Takahiro Adachi
-
Patent number: 12581812Abstract: A display device with high operation stability is provided. The display device comprises a first substrate, a second substrate, and a conductive fluid. The first substrate has a first insulating plate and a switching element. The switching element is formed on the first insulating plate. The second substrate has a second insulating plate, a first electrode, a light-emitting layer, and a second electrode. The second insulating plate faces the first insulating plate. The first electrode is formed on the second insulating plate. The light-emitting layer is formed on the first electrode. The second electrode is formed on the light-emitting layer. The second electrode faces the switching element. The conductive fluid is disposed between the first substrate and the second substrate. The conductive fluid electrically connects the switching element and the second electrode.Type: GrantFiled: December 23, 2019Date of Patent: March 17, 2026Assignee: SHARP KABUSHIKI KAISHAInventors: Jun Sakuma, Yasushi Asaoka
-
Patent number: 12581805Abstract: A display device includes a first common charge transport layer, a first light-emitting layer and a second light-emitting layer each of which is formed on the first common charge transport layer, a common electrode formed over both of the first light-emitting layer and the second light-emitting layer, and a leakage blocking layer having an insulating property, the leakage blocking layer being superimposed on two adjacent end portions of the first light-emitting layer and the second light-emitting layer in plan view, and a distance between the first common charge transport layer and the common electrode is larger in a first region where each of the first light-emitting layer and the second light-emitting layer is superimposed on the leakage blocking layer than in a second region where each of the first light-emitting layer and the second light-emitting layer is not superimposed on the leakage blocking layer.Type: GrantFiled: December 22, 2020Date of Patent: March 17, 2026Assignee: SHARP KABUSHIKI KAISHAInventors: Jun Sakuma, Yasushi Asaoka
-
Patent number: 12550600Abstract: A method for manufacturing a light-emitting element includes forming a first light-emitting layer by applying a first quantum dot solution containing first quantum dots, forming a first resist layer by applying a first photosensitive resin composition onto the first light-emitting layer, exposing the first resist layer to light in a predetermined pattern, and performing a pattern formation of developing the first resist layer with a developing solution to form a patterned first resist layer, and processing the first light-emitting layer with a treatment liquid using the patterned first resist layer as a mask to form a patterned first light-emitting layer.Type: GrantFiled: December 3, 2020Date of Patent: February 10, 2026Assignee: SHARP KABUSHIKI KAISHAInventors: Takahiro Adachi, Jun Sakuma
-
Patent number: 12543482Abstract: A display device, includes: a first light-emitting element emitting a first light having a first wavelength; and a second light-emitting element emitting a second light having a second wavelength, the first light and the second light being released in a first direction; a first optical layer formed in a second direction with respect to the first light-emitting element, and positioned to coincide with the first light-emitting element in the second direction, the first optical layer being transparent to the light having the second wavelength and reflective or absorptive of the light having the first wavelength; and a second optical layer formed in the second direction with respect to the second light-emitting element, and positioned to coincide with the second light-emitting element in the second direction, the second optical layer being transparent to the light having the first wavelength and reflective or absorptive of the light having the second wavelength.Type: GrantFiled: December 2, 2019Date of Patent: February 3, 2026Assignee: SHARP KABUSHIKI KAISHAInventors: Jun Sakuma, Yasushi Asaoka
-
Patent number: 12520655Abstract: A display device is a display device provided with a display region including a plurality of pixels and a frame region surrounding the display region, and includes: a thin film transistor layer; and a light-emitting element layer including a plurality of light-emitting elements, each including a first electrode, a function layer, and a second electrode, and each having a different luminescent color, wherein the function layer includes a light-emitting layer, and a pair of holding layers sandwiching the light-emitting layer and each including a photosensitive material and a conductive nanoparticle.Type: GrantFiled: January 18, 2021Date of Patent: January 6, 2026Assignee: SHARP KABUSHIKI KAISHAInventors: Makoto Kitagawa, Jun Sakuma, Yunting Shen
-
Patent number: 12520637Abstract: A light-emitting element producing method includes: a step of forming a first-charge transport layer on a first electrode; a step of applying a first photosensitive resin composition, containing first quantum dots, to the first-charge transport layer, and forming a first-quantum-dot containing layer; a step of applying a second photosensitive resin composition, containing second quantum dots, to the first-quantum-dot containing layer, and forming a second-quantum-dot containing layer; a step of forming a second-charge transport layer on the second-quantum-dot containing layer; and a step of forming a second electrode on the second-charge transport layer.Type: GrantFiled: October 7, 2020Date of Patent: January 6, 2026Assignee: SHARP KABUSHIKI KAISHAInventors: Akira Ohshima, Jun Sakuma, Sentaro Kida, Makoto Kitagawa
-
Patent number: 12501764Abstract: A method of manufacturing a display device includes: a) forming a first pixel electrode and a second pixel electrode; b) forming a first light-emitting layer on the first pixel electrode; c) forming a photosensitive resin layer on the second pixel electrode and on the first light-emitting layer; d) forming a photosensitive resin pattern having an opening on the second pixel electrode and including a structural member e) forming a light-emitting material layer on the photosensitive resin pattern and on an opening bottom portion that is at least a part of the second pixel electrode and that is provided below the opening; and f) forming a second light-emitting layer on the second pixel electrode by lifting off a first lift-off portion that is a part of the photosensitive resin pattern and a second lift-off portion that is a part of the light-emitting material layer, with the structural member being left intact.Type: GrantFiled: December 22, 2020Date of Patent: December 16, 2025Assignee: SHARP KABUSHIKI KAISHAInventors: Yasushi Asaoka, Jun Sakuma, Takahiro Adachi
-
Publication number: 20250351620Abstract: A light-emitting element includes an anode and a cathode, a light-emitting layer positioned between the anode and the cathode, a functional layer positioned between the light-emitting layer and the cathode, and containing Zn and O as elements, and an organic layer having insulating properties and being in contact with the functional layer and the cathode. The organic layer contains a polymer having a long alkyl chain.Type: ApplicationFiled: July 27, 2022Publication date: November 13, 2025Inventors: JUN SAKUMA, YASUSHI ASAOKA, Sentaro KIDA, Takahiro ADACHI, Kota ADACHI
-
Patent number: 12457890Abstract: A method of manufacturing a display device includes: a) a step of preparing a substrate including an electrode and another electrode; b) a step of forming a photosensitive resin material layer on the substrate; c) a step of forming a charge transport material layer and a light-emitting material layer on the substrate; and d) a step of patterning the photosensitive resin material layer, the charge transport material layer, and the light-emitting material layer into a photosensitive resin layer, a charge transport layer, and a light-emitting layer respectively by retaining, without lifting off, non-lift-off portions of the photosensitive resin material layer, the charge transport material layer, and the light-emitting material layer, the non-lift-off portions being provided at least on a part of the electrode, and lifting off lift-off portions of the photosensitive resin material layer, the charge transport material layer, and the light-emitting material layer.Type: GrantFiled: November 25, 2020Date of Patent: October 28, 2025Assignee: SHARP KABUSHIKI KAISHAInventors: Jun Sakuma, Yasushi Asaoka, Makoto Kitagawa
-
Publication number: 20250284175Abstract: A wavelength conversion apparatus according to the present disclosure includes storage means storing a conversion efficiency map in which wavelength conversion efficiency for each of a plurality of input positions of input light on a reference plane of a nonlinear optical crystal that converts a wavelength of output light from a wavelength of the input light is stored in association with the input position, the conversion efficiency map being for each of a plurality of temperature conditions of the nonlinear optical crystal, incident position determining means for determining, based on the conversion efficiency maps under two or more of the temperature conditions selected from the storage means, an incident position where the input light is made incident on the nonlinear optical crystal, and control means for controlling moving means for moving relative positions of the nonlinear optical crystal and the input light.Type: ApplicationFiled: March 11, 2025Publication date: September 11, 2025Inventors: Jun SAKUMA, Ryotaro MORI
-
Patent number: 12414436Abstract: A display device includes: a substrate; a flattened layer; at least one first light-emitting element; at least one second light-emitting element; at least one first drive circuit; and at least one second drive circuit, wherein light emitted by the first light-emitting element is taken out through the substrate, light emitted by the second light-emitting element is taken out from a direction opposite to a direction in which the light emitted by the first light-emitting element is taken out, the first light-emitting element is provided in an opening provided in the flattened layer, the second light-emitting element is provided in a layer above the flattened layer and overlaps the flattened layer, and the first drive circuit and the second drive circuit are provided closer to the substrate than the second light-emitting element.Type: GrantFiled: January 6, 2020Date of Patent: September 9, 2025Assignee: SHARP KABUSHIKI KAISHAInventors: Yasushi Asaoka, Sentaro Kida, Jun Sakuma
-
Patent number: 12389755Abstract: A display device includes at least the following: a single contact hole; n TFTs, where n is a natural number equal to or greater than two; and n electrodes, wherein the n electrodes are electrically connected to the respective n TFTs via the single contact hole.Type: GrantFiled: February 14, 2020Date of Patent: August 12, 2025Assignee: SHARP KABUSHIKI KAISHAInventors: Jun Sakuma, Yasushi Asaoka
-
Publication number: 20250241158Abstract: A display device includes: a red light-emitting layer configured to emit red light, a green light-emitting layer configured to emit green light, a first blue light-emitting layer configured to emit first blue light, and a second blue light-emitting layer configured to emit second blue light, the red light-emitting layer, the green light-emitting layer, the first blue light-emitting layer, and the second blue light-emitting layer being individually provided in a cross-sectional view of the display device; and a yellow-wavelength conversion layer provided over at least the second blue light-emitting layer, and configured to convert the second blue light into yellow light.Type: ApplicationFiled: December 7, 2021Publication date: July 24, 2025Inventors: Jun SAKUMA, Yasushi ASAOKA
-
Publication number: 20250194333Abstract: A display device includes a first electrode, a second electrode facing the first electrode, and a light-emitting layer provided between the first electrode and the second electrode. The light-emitting layer includes a first light-emitting layer including first quantum dots and being provided on a side of the first electrode, a second light-emitting layer including second quantum dots and being provided on a side of the second electrode, and a flattened layer provided between the first light-emitting layer and the second light-emitting layer.Type: ApplicationFiled: September 14, 2021Publication date: June 12, 2025Inventors: Kota ADACHI, YASUSHI ASAOKA, JUN SAKUMA
-
Publication number: 20250182446Abstract: A robustness verification device uses the similarity between feature amounts obtained by extracting a feature amount to identify a similar image having a predetermined rank of similarity with respect to an input image within a candidate image group; counts the rank of the similar image with respect to the input image in the candidate image group in a case where adversarial perturbation is applied to the image; calculates the rank of the similar image with respect to the input image in the candidate image group in a case where adversarial perturbation is not applied to the image; and a verifies whether or not the counted rank of the similar image counted is within a predetermined range that includes the calculated rank of the similar.Type: ApplicationFiled: March 4, 2022Publication date: June 5, 2025Applicants: NEC CORPORATION, UNIVERSITY OF TSUKUBAInventors: Kazuya KAKIZAKI, Kazuto FUKUCHI, Jun SAKUMA
-
Publication number: 20250166356Abstract: A learning device causes a feature amount extractor to be trained such that the upper limit and the lower limit of a distance, obtained in a case where the feature amount extractor is used, in a feature space between images become close to the distance.Type: ApplicationFiled: March 4, 2022Publication date: May 22, 2025Applicants: NEC Corporation, UNIVERSITY OF TSUKUBAInventors: Kazuya KAKIZAKI, Kazuto FUKUCHI, Jun SAKUMA
-
Patent number: 12289936Abstract: A light-emitting element includes a first light-emitting layer including a first quantum dot and a second light-emitting layer including a second quantum dot provided between the cathode electrode and an anode electrode in order from the cathode electrode, the first quantum dot has a core-shell structure including a first core and a first shell, the second quantum dot has a core-shell structure including a second core and a second shell, and an energy level at a lower end of a conduction band of the first core is higher than an energy level at a lower end of a conduction band of the second core.Type: GrantFiled: September 30, 2019Date of Patent: April 29, 2025Assignee: SHARP KABUSHIKI KAISHAInventors: Jun Sakuma, Yasushi Asaoka
-
Patent number: 12259339Abstract: A light-source apparatus, an inspection apparatus, and an adjustment method capable of facilitating the adjustment of the temperature of a BBO crystal are provided. A light-source apparatus according to the present disclosure includes a first light source configured to generate visible light, a first external resonator including a plurality of optical mirrors, a BBO crystal disposed in the first external resonator, capable of generating UV light in a wavelength range of 233 nm to 236 nm, the UV light being a second harmonic of the visible light, a one- or two-dimensional semiconductor sensor disposed near a far-field image plane formed through an optical element provided on an optical path of the UV light, and a calculation unit configured to calculate a representative position of a light intensity distribution detected by the semiconductor sensor.Type: GrantFiled: January 13, 2023Date of Patent: March 25, 2025Assignee: LASERTEC CORPORATIONInventors: Jun Sakuma, Ryotaro Mori