Patents by Inventor Tohru Okabe
Tohru Okabe 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).
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Publication number: 20230077957Abstract: A plurality of inner protrusions are provided in a non-display area so as to surround a through hole. Each of the plurality of inner protrusions includes: an underlying resin layer; and an underlying inorganic insulation layer provided on the underlying resin layer. Each underlying resin layer is separated by a plurality of inner slits formed on a surface of a resin substrate layer so as to surround the through hole. The underlying inorganic insulation layer is provided so as to project like an eave from the underlying resin layer to either one or both of a through hole side and a display area side.Type: ApplicationFiled: February 13, 2020Publication date: March 16, 2023Inventors: TOHRU OKABE, SHINSUKE SAIDA, SHINJI ICHIKAWA, RYOSUKE GUNJI
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Publication number: 20230062563Abstract: A display device includes: a substrate; a thin film transistor layer including a plurality of thin film transistors; a light-emitting element layer including a plurality of light-emitting elements; a display region; and an electronic component disposed on a back face side of the display region, wherein the light-emitting element layer includes a first electrode, an edge cover, a light-emitting function layer, and a second electrode, the plurality of light-emitting elements include a first light-emitting element and a second light-emitting element located in the second display region, an area of the first electrode of the second light-emitting element is smaller than an area of the first electrode of the first light-emitting element, a first contact hole is located at a position overlapping with the edge cover, and a second contact hole is located at a position corresponding to the opening of the edge cover.Type: ApplicationFiled: January 30, 2020Publication date: March 2, 2023Inventors: TOHRU OKABE, SHINSUKE SAIDA, SHINJI ICHIKAWA, RYOSUKE GUNJI
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Patent number: 11574982Abstract: A slit has ends each close to one of a display area and a terminal. The ends are each formed of a stepwise side face, including etch stop films.Type: GrantFiled: January 31, 2018Date of Patent: February 7, 2023Assignee: SHARP KABUSHIKI KAISHAInventors: Tohru Okabe, Ryosuke Gunji, Hiroki Taniyama, Shinji Ichikawa, Takeshi Yaneda, Hiroharu Jinmura, Yoshihiro Nakada, Akira Inoue
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Patent number: 11574983Abstract: In a display device, a second wiring line extends in a display region and includes an imaginary straight line that extends from the second wiring line in an extension direction of the second wiring line and intersects with an opening of an edge cover. The second wiring line extends along the peripheral edge of the opening without intersecting with the opening of the edge cover.Type: GrantFiled: March 30, 2018Date of Patent: February 7, 2023Assignee: SHARP KABUSHIKI KAISHAInventors: Ryosuke Gunji, Tohru Okabe, Shinsuke Saida, Shinji Ichikawa, Kohji Ariga, Hiroki Taniyama, Yoshihiro Nakada, Koji Tanimura, Yoshihiro Kohara, Hiroharu Jinmura, Akira Inoue
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Patent number: 11557251Abstract: The present application discloses a current-driven display device capable of providing satisfactory display without flickering even when pause drive is performed. In a pixel circuit 15, a first initialization transistor T4 initializes a gate voltage Vg, and thereafter a voltage on a data signal line Di is written to a holding capacitor Cst via a write control transistor T2 and a drive transistor T1. Thereafter, emission control transistors T5 and T6 are turned on, so that a drive current I1 from the drive transistor T1 causes an organic EL element OL to emit light. During this emission period, even if the gate voltage Vg is decreased due to a leakage current through the first initialization transistor T4 in an OFF state, the decrease is compensated for by increasing a threshold control voltage being provided to a threshold control terminal TG of the drive transistor T1.Type: GrantFiled: September 28, 2018Date of Patent: January 17, 2023Assignee: SHARP KABUSHIKI KAISHAInventors: Tohru Okabe, Takeshi Yaneda
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Patent number: 11545541Abstract: A wiring line is provided on a TFT layer, in which the wiring line is formed in the same layer and formed of the same material as those of a reflection electrode. The reflection electrode includes a plurality of metallic conductive layers made up of a low resistance metallic material, an oxide-based lower transparent conductive layer provided on a lower surface side of a lowermost metallic conductive layer constituting a lowermost layer, an oxide-based upper transparent conductive layer having light reflectivity and provided on an upper surface side of an uppermost metallic conductive layer constituting an uppermost layer, and an oxide-based intermediate transparent conductive layer provided between the plurality of metallic conductive layers.Type: GrantFiled: September 28, 2017Date of Patent: January 3, 2023Assignee: SHARP KABUSHIKI KAISHAInventors: Tohru Okabe, Ryosuke Gunji, Hiroki Taniyama, Shinsuke Saida, Hiroharu Jinmura, Yoshihiro Nakada, Akira Inoue
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Publication number: 20220415997Abstract: A display device includes a thin film transistor layer including a first interlayer insulation film, a first wiring layer, a second interlayer insulation film, a second wiring layer, a third interlayer insulation film, a third wiring layer, a first planarization film, a fourth wiring layer, and a second planarization film; and a first damming wall in a frame area separated from the first and second planarization film in a display area by a first slit. There is provided a fourth interlayer insulation film between the third and fourth wiring layer. The fourth interlayer insulation film covers an edge of either one or both of a first frame line and a second frame line as the third wiring layer in a region where the first frame line is located opposite the second frame line in a plan view, the edge facing the display area and being exposed in the first slit.Type: ApplicationFiled: October 21, 2019Publication date: December 29, 2022Inventors: Tohru OKABE, Takeshi YANEDA
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Publication number: 20220415999Abstract: A first connection wire electrically connected to a first electrode via a first through-hole formed in a second flattening film, and a second connection wire electrically connected to the first connection wire via a second through-hole formed in a first flattening film are provided, and a second interlayer insulating film has a contact opening so as to pass through the second interlayer insulating film to overlap the first connection wire, and such that the edge of the contact opening surrounds the first through-hole and the second through-hole in a plan view.Type: ApplicationFiled: December 27, 2019Publication date: December 29, 2022Inventors: TOHRU OKABE, TAKAO SAITOH, YOHSUKE KANZAKI, SHINJI ICHIKAWA, RYOSUKE GUNJI, SHINSUKE SAIDA, SEIJI KANEKO
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Publication number: 20220376032Abstract: A display device according to an aspect of the disclosure includes a first metal protrusion being in contact with a first power-source trunk wire, and a second metal protrusion being in contact with a second power-source trunk wire. A first bank defining the end of an organic sealing film includes the first metal protrusion, the second metal protrusion, and a first resin protrusion. The first resin protrusion overlaps the first and second metal protrusions. The first resin protrusion has a frame shape.Type: ApplicationFiled: September 19, 2019Publication date: November 24, 2022Inventors: Tohru OKABE, Shinsuke SAIDA, Shinji ICHIKAWA, Ryosuke GUNJI, Akira INOUE, Yoshihiro NAKADA, Hiroharu JINMURA
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Patent number: 11508792Abstract: In a display region, etching stopper layers are provided between a plurality of inorganic insulating films, openings are formed in the inorganic insulating films located closer to a light-emitting element than the etching stopper layers so as to expose the upper surfaces of the etching stopper layers, and flattening films are provided in the openings such that the openings are filed with the flattening films.Type: GrantFiled: March 28, 2018Date of Patent: November 22, 2022Assignee: SHARP KABUSHIKI KAISHAInventors: Tohru Okabe, Ryosuke Gunji, Shinji Ichikawa, Kohji Ariga, Shinsuke Saida, Hiroki Taniyama, Hiroharu Jinmura, Yoshihiro Nakada, Koji Tanimura, Yoshihiro Kohara, Akira Inoue
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Publication number: 20220344423Abstract: In a TFT layer forming step, first, a semiconductor layer on a resin substrate is formed by performing a semiconductor layer forming step, and subsequently a gate insulating film is formed to cover the semiconductor layer by performing a gate insulating film forming step, and then a first metal layer is formed by performing a first metal film deposition step, a first photo step, and a first etching step, and a second metal layer is formed by performing a second metal film deposition step, a second photo step, and a second etching step, thereby forming a gate layer in which the first metal layer and the second metal layer are layered.Type: ApplicationFiled: February 27, 2019Publication date: October 27, 2022Inventors: TOHRU OKABE, TAKESHI YANEDA
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Publication number: 20220293714Abstract: Contact holes related to routed wires electrically connected to data signal lines running through the corner portions of a display region are larger in number than contact holes related to routed wires electrically connected to data signal lines running through the center portion of the display region.Type: ApplicationFiled: September 27, 2019Publication date: September 15, 2022Inventors: Ryosuke GUNJI, Shinsuke SAIDA, Shinji ICHIKAWA, Tohru OKABE, Akira INOUE, Yoshihiro NAKADA, Hiroharu JINMURA
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Patent number: 11430857Abstract: The display device includes a non-display area. The non-display area includes: a slit formed in an edge cover; a first conductive layer formed in the same layer as an anode, and being in contact with a cathode; and a second conductive layer formed in the same layer as a capacitance electrode and provided to overlap the slit.Type: GrantFiled: March 30, 2018Date of Patent: August 30, 2022Assignee: SHARP KABUSHIKI KAISHAInventors: Tohru Okabe, Shinsuke Saida, Shinji Ichikawa, Hiroki Taniyama, Ryosuke Gunji, Takeshi Yaneda, Yoshihiro Nakada, Hiroharu Jinmura, Akira Inoue
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Patent number: 11398542Abstract: In a step of forming a plurality of control lines composed of a first metal layer a first metal layer branch line is formed. In a step of forming a plurality of power source lines composed of a second metal layer a second metal layer connecting portion is formed that connects each power source line with the first metal layer branch line via an opening of a first insulating film. In a step of forming a plurality of data signal lines composed of a third metal layer that is formed on a second insulating film the first metal layer branch line formed in the opening of the first insulating and the second metal layer connecting portion formed in an opening of the second insulating film are etched.Type: GrantFiled: March 26, 2018Date of Patent: July 26, 2022Assignee: SHARP KABUSHIKI KAISHAInventors: Tohru Okabe, Shinsuke Saida, Shinji Ichikawa, Hiroki Taniyama, Ryosuke Gunji, Kohji Ariga, Yoshihiro Nakada, Koji Tanimura, Yoshihiro Kohara, Hiroharu Jinmura, Akira Inoue
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Publication number: 20220216288Abstract: A TFT layer of a display device includes: an initialization power source wiring line; a second interlayer insulating film provided covering the initialization power source wiring line; a source wiring line provided on the second interlayer insulating film; a low-level power source wiring line provided below the initialization power source wiring line; and a frame capacitor. The frame capacitor includes: a first frame capacitance electrode formed by the same material in the same layer as the initialization power source wiring line; and a second frame capacitance electrode formed by the same material in the same layer as the source wiring line and facing the first frame capacitance electrode with the second interlayer insulating film interposed therebetween. The first frame capacitance electrode is electrically connected to the high-level power source wiring line, and the second frame capacitance electrode is electrically connected to the low-level power source wiring line.Type: ApplicationFiled: March 28, 2019Publication date: July 7, 2022Inventors: TOHRU OKABE, TAKESHI YANEDA
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Publication number: 20220199947Abstract: A display device (50a) includes a non-display region (N) shaped in an island and provided inside a display region. The non-display region (N) includes a through hole (H) framed to penetrate the non-display region (N) along a thickness of a resin substrate (10a). In the non-display region (N), a first inorganic insulating film (11, 13, 15, 17) includes an opening (M) provided to surround the through hole (H) and penetrating the first inorganic insulating film (11, 13, 15, 17). A second inorganic insulating film (36) of a sealing film (40) is in contact with the resin substrate (10a) exposed through the opening (M) from the first inorganic insulating film (11, 13, 15, 17).Type: ApplicationFiled: March 25, 2019Publication date: June 23, 2022Inventors: TOHRU OKABE, SHINJI ICHIKAWA, HIROKI TANIYAMA, RYOSUKE GUNJI, SHINSUKE SAIDA, HIROHARU JINMURA, AKIRA INOUE, YOSHIHIRO NAKADA
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Publication number: 20220173182Abstract: A display device (2) includes: a planarization film; and a light-emitting-element layer including an anode, an edge cover, an EL active layer, and a cathode in this sequence. The display device further includes: a first photospacer and a second photospacer each having a surface thereof covered by the cathode; and a lightning rod photospacer (44) including a second projection portion (44b) that is a part of the planarization film and having a surface thereof covered by a first metal film (44c) made of the same material and in the same layer as the anode.Type: ApplicationFiled: April 4, 2019Publication date: June 2, 2022Inventors: SHOJI OKAZAKI, TOHRU OKABE
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Publication number: 20220165823Abstract: An organic EL display (1) has a bend (B) where a slit (81) is bored in a base coat film (23), gate insulating film (27), first interlayer insulating film (31) and second interlayer insulating film (35). The bend is provided with a filler layer (83) filling the slit and covering both edges of the slit. The filler layer has a protrusion (85) overlapping each edge in the width direction of the slit. A routed wire (7) routed from the display region (D) and then routed over the filler layer to reach a terminal section (T) extends over the protrusion.Type: ApplicationFiled: April 4, 2019Publication date: May 26, 2022Inventors: SHINJI ICHIKAWA, SHINSUKE SAIDA, RYOSUKE GUNJI, HIROKI TANIYAMA, TOHRU OKABE, Akira INOUE, Hiroharu JINMURA, Yoshihiro NAKADA, Koji TANIMURA
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Patent number: 11335237Abstract: A pixel circuit including a drive transistor and a capacitor electrically connected to a control terminal of the drive transistor, a light-emitting element, a first power supply voltage line intersecting a data signal line, and a second power supply voltage line electrically connected to the control terminal via the capacitor are provided, and in a writing period in which a scanning signal line becomes active, the first power supply voltage line and a second conduction terminal of the drive transistor are not conductive with each other, and in a light emission period of the light-emitting element, the first power supply voltage line and the second conduction terminal of the drive transistor are conductive with each other.Type: GrantFiled: September 28, 2018Date of Patent: May 17, 2022Assignee: SHARP KABUSHIKI KAISHAInventors: Tohru Okabe, Takeshi Yaneda
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Publication number: 20220149121Abstract: A separation wall is provided in a frame-like shape along a peripheral edge of a through-hole in a non-display region which is defined to be in an island shape inside a display region and in which the through-hole is formed, the separation wall includes an inner metal layer provided in a frame-like shape on a first inorganic insulating film on a side of the through-hole, and a resin layer provided in a frame-like shape on the first inorganic insulating film and the inner metal layer, and the resin layer includes an inner protrusion portion provided in an eaves shape and protruding from the inner metal layer.Type: ApplicationFiled: March 1, 2019Publication date: May 12, 2022Applicant: SHARP KABUSHIKI KAISHAInventors: TOHRU OKABE, RYOSUKE GUNJI, SHINSUKE SAIDA, SHINJI ICHIKAWA, HIROHARU JINMURA, YOSHIHIRO NAKADA, AKIRA INOUE, TAKESHI YANEDA