Patents by Inventor Atsuhiro Katayama

Atsuhiro Katayama 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: 10768494
    Abstract: A liquid crystal display device includes a TFT substrate and a counter substrate with liquid crystal sandwiched therebetween. The TFT substrate has scanning lines 10 extending in a first direction and arrayed in a second direction and video signal lines 20 extending in the second direction and arrayed in the first direction. The TFT substrate has a display area 500 in which TFT pixels are arrayed in a matrix pattern, and a frame area 600 surrounding the display area. In the frame area 600, common bus wires 521 are formed in the same layer and with the same material as the video signal lines 20 and are impressed with a common voltage. Dummy TFTs are formed in a layer under the common bus wires 521. The scanning lines 10, extending over the frame area 600, are divided outside the display area and are interconnected by bridging wires 170.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: September 8, 2020
    Assignee: Japan Display Inc.
    Inventors: Motoharu Miyamoto, Atsuhiro Katayama
  • Publication number: 20200019028
    Abstract: A liquid crystal display device includes a TFT substrate and a counter substrate with liquid crystal sandwiched therebetween. The TFT substrate has scanning lines 10 extending in a first direction and arrayed in a second direction and video signal lines 20 extending in the second direction and arrayed in the first direction. The TFT substrate has a display area 500 in which TFT pixels are arrayed in a matrix pattern, and a frame area 600 surrounding the display area. In the frame area 600, common bus wires 521 are formed in the same layer and with the same material as the video signal lines 20 and are impressed with a common voltage. Dummy TFTs are formed in a layer under the common bus wires 521. The scanning lines 10, extending over the frame area 600, are divided outside the display area and are interconnected by bridging wires 170.
    Type: Application
    Filed: September 26, 2019
    Publication date: January 16, 2020
    Applicant: Japan Display Inc.
    Inventors: Motoharu Miyamoto, Atsuhiro Katayama
  • Patent number: 10488722
    Abstract: A liquid crystal display device includes a TFT substrate and a counter substrate with liquid crystal sandwiched therebetween. The TFT substrate has scanning lines 10 extending in a first direction and arrayed in a second direction and video signal lines 20 extending in the second direction and arrayed in the first direction. The TFT substrate has a display area 500 in which TFT pixels are arrayed in a matrix pattern, and a frame area 600 surrounding the display area. In the frame area 600, common bus wires 521 are formed in the same layer and with the same material as the video signal lines 20 and are impressed with a common voltage. Dummy TFTs are formed in a layer under the common bus wires 521. The scanning lines 10, extending over the frame area 600, are divided outside the display area and are interconnected by bridging wires 170.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: November 26, 2019
    Assignee: JAPAN DISPLAY INC.
    Inventors: Motoharu Miyamoto, Atsuhiro Katayama
  • Publication number: 20190155114
    Abstract: A liquid crystal display device includes a TFT substrate and a counter substrate with liquid crystal sandwiched therebetween. The TFT substrate has scanning lines 10 extending in a first direction and arrayed in a second direction and video signal lines 20 extending in the second direction and arrayed in the first direction. The TFT substrate has a display area 500 in which TFT pixels are arrayed in a matrix pattern, and a frame area 600 surrounding the display area. In the frame area 600, common bus wires 521 are formed in the same layer and with the same material as the video signal lines 20 and are impressed with a common voltage. Dummy TFTs are formed in a layer under the common bus wires 521. The scanning lines 10, extending over the frame area 600, are divided outside the display area and are interconnected by bridging wires 170.
    Type: Application
    Filed: January 18, 2019
    Publication date: May 23, 2019
    Applicant: Japan Display Inc.
    Inventors: Motoharu MIYAMOTO, Atsuhiro Katayama
  • Patent number: 10228593
    Abstract: A liquid crystal display device includes a TFT substrate and a counter substrate with liquid crystal sandwiched therebetween. The TFT substrate has scanning lines 10 extending in a first direction and arrayed in a second direction and video signal lines 20 extending in the second direction and arrayed in the first direction. The TFT substrate has a display area 500 in which TFT pixels are arrayed in a matrix pattern, and a frame area 600 surrounding the display area. In the frame area 600, common bus wires 521 are formed in the same layer and with the same material as the video signal lines 20 and are impressed with a common voltage. Dummy TFTs are formed in a layer under the common bus wires 521. The scanning lines 10, extending over the frame area 600, are divided outside the display area and are interconnected by bridging wires 170.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: March 12, 2019
    Assignee: Japan Display Inc.
    Inventors: Motoharu Miyamoto, Atsuhiro Katayama
  • Publication number: 20180246383
    Abstract: A liquid crystal display device includes a TFT substrate and a counter substrate with liquid crystal sandwiched therebetween. The TFT substrate has scanning lines 10 extending in a first direction and arrayed in a second direction and video signal lines 20 extending in the second direction and arrayed in the first direction. The TFT substrate has a display area 500 in which TFT pixels are arrayed in a matrix pattern, and a frame area 600 surrounding the display area. In the frame area 600, common bus wires 521 are formed in the same layer and with the same material as the video signal lines 20 and are impressed with a common voltage. Dummy TFTs are formed in a layer under the common bus wires 521. The scanning lines 10, extending over the frame area 600, are divided outside the display area and are interconnected by bridging wires 170.
    Type: Application
    Filed: May 1, 2018
    Publication date: August 30, 2018
    Applicant: Japan Display Inc.
    Inventors: Motoharu MIYAMOTO, Atsuhiro KATAYAMA
  • Patent number: 9995978
    Abstract: To improve the reliability of a display device. The display device includes a display portion, an input unit, and a lead-out wiring portion which connects the display portion and the input unit to each other. In addition, the input unit includes a first terminal group in which a plurality of first terminals are arranged. In addition, the lead-out wiring portion includes a plurality of first lead-out wirings connected to the plurality of first terminals. In addition, a first end-portion wiring, which is formed in an end portion of an array, among the plurality of first lead-out wirings, includes a first main line which extends along an extending direction of a neighboring first lead-out wiring, a first bypass line which extends along the first main line, and a first branch portion and a second branch portion which connect the first main line and the first bypass line to each other.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: June 12, 2018
    Assignee: Japan Display Inc.
    Inventors: Daisuke Ikeda, Atsuhiro Katayama, Yasuhiro Kanaya
  • Patent number: 9983449
    Abstract: A liquid crystal display device includes a TFT substrate and a counter substrate with liquid crystal sandwiched therebetween. The TFT substrate has scanning lines 10 extending in a first direction and arrayed in a second direction and video signal lines 20 extending in the second direction and arrayed in the first direction. The TFT substrate has a display area 500 in which TFT pixels are arrayed in a matrix pattern, and a frame area 600 surrounding the display area. In the frame area 600, common bus wires 521 are formed in the same layer and with the same material as the video signal lines 20 and are impressed with a common voltage. Dummy TFTs are formed in a layer under the common bus wires 521. The scanning lines 10, extending over the frame area 600, are divided outside the display area and are interconnected by bridging wires 170.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: May 29, 2018
    Assignee: Japan Display Inc.
    Inventors: Motoharu Miyamoto, Atsuhiro Katayama
  • Patent number: 9841633
    Abstract: In the step of curing a resin for bonding a TFT substrate and a counter substrate each having an alignment film that has been optically aligned by using UV-light, damage to the alignment film due to the UV-light can be prevented without using a light shielding mask. A UV-light absorption layer is formed between each black matrix on the counter substrate. The TFT and counter substrates are sealed at their periphery by a resin that is cured by UV-light radiated from the counter substrate side. Since the absorption layer has a high absorbability to UV-light at a wavelength of 300 nm or less that degrades the alignment film, damage to the alignment film due to the UV-light for curing the resin can be prevented. Thus, provision of a light shielding mask for shielding the UV-light for the display region can be saved.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: December 12, 2017
    Assignee: Japan Display Inc.
    Inventors: Noboru Kunimatsu, Yuko Matsumoto, Yasushi Tomioka, Masateru Morimoto, Atsuhiro Katayama
  • Publication number: 20170261822
    Abstract: A liquid crystal display device includes a TFT substrate and a counter substrate with liquid crystal sandwiched therebetween. The TFT substrate has scanning lines 10 extending in a first direction and arrayed in a second direction and video signal lines 20 extending in the second direction and arrayed in the first direction. The TFT substrate has a display area 500 in which TFT pixels are arrayed in a matrix pattern, and a frame area 600 surrounding the display area. In the frame area 600, common bus wires 521 are formed in the same layer and with the same material as the video signal lines 20 and are impressed with a common voltage. Dummy TFTs are formed in a layer under the common bus wires 521. The scanning lines 10, extending over the frame area 600, are divided outside the display area and are interconnected by bridging wires 170.
    Type: Application
    Filed: May 25, 2017
    Publication date: September 14, 2017
    Applicant: Japan Display Inc.
    Inventors: Motoharu MIYAMOTO, Atsuhiro KATAYAMA
  • Patent number: 9678397
    Abstract: A liquid crystal display device includes a TFT substrate and a counter substrate with liquid crystal sandwiched therebetween. The TFT substrate has scanning lines 10 extending in a first direction and arrayed in a second direction and video signal lines 20 extending in the second direction and arrayed in the first direction. The TFT substrate has a display area 500 in which TFT pixels are arrayed in a matrix pattern, and a frame area 600 surrounding the display area. In the frame area 600, common bus wires 521 are formed in the same layer and with the same material as the video signal lines 20 and are impressed with a common voltage. Dummy TFTs are formed in a layer under the common bus wires 521. The scanning lines 10, extending over the frame area 600, are divided outside the display area and are interconnected by bridging wires 170.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: June 13, 2017
    Assignee: Japan Display Inc.
    Inventors: Motoharu Miyamoto, Atsuhiro Katayama
  • Publication number: 20170090256
    Abstract: A liquid crystal display device includes a TFT substrate and a counter substrate with liquid crystal sandwiched therebetween. The TFT substrate has scanning lines 10 extending in a first direction and arrayed in a second direction and video signal lines 20 extending in the second direction and arrayed in the first direction. The TFT substrate has a display area 500 in which TFT pixels are arrayed in a matrix pattern, and a frame area 600 surrounding the display area. In the frame area 600, common bus wires 521 are formed in the same layer and with the same material as the video signal lines 20 and are impressed with a common voltage. Dummy TFTs are formed in a layer under the common bus wires 521. The scanning lines 10, extending over the frame area 600, are divided outside the display area and are interconnected by bridging wires 170.
    Type: Application
    Filed: August 15, 2016
    Publication date: March 30, 2017
    Applicant: Japan Display Inc.
    Inventors: Motoharu MIYAMOTO, Atsuhiro KATAYAMA
  • Patent number: 9500919
    Abstract: Conductive rubbing sludge generated by rubbing attaches to side portions of chip-on-glass (COG) terminals and terminal wiring lines and possibly causes short-circuiting (leakage) between adjacent terminal wiring lines via particles included in an anisotropic conductive film (ACF) which connects bumps of a semiconductor chip such as a driver IC to COG terminals. In the liquid crystal display device, each terminal wiring line connected to a COG terminal has a projecting part designed to generate an area not subjected to rubbing.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: November 22, 2016
    Assignee: Japan Display Inc.
    Inventor: Atsuhiro Katayama
  • Publication number: 20160306214
    Abstract: To improve the reliability of a display device. The display device includes a display portion, an input unit, and a lead-out wiring portion which connects the display portion and the input unit to each other. In addition, the input unit includes a first terminal group in which a plurality of first terminals are arranged. In addition, the lead-out wiring portion includes a plurality of first lead-out wirings connected to the plurality of first terminals. In addition, a first end-portion wiring, which is formed in an end portion of an array, among the plurality of first lead-out wirings, includes a first main line which extends along an extending direction of a neighboring first lead-out wiring, a first bypass line which extends along the first main line, and a first branch portion and a second branch portion which connect the first main line and the first bypass line to each other.
    Type: Application
    Filed: April 1, 2016
    Publication date: October 20, 2016
    Applicant: Japan Display Inc.
    Inventors: Daisuke IKEDA, Atsuhiro KATAYAMA, Yasuhiro KANAYA
  • Publication number: 20160041432
    Abstract: In the step of curing a resin for bonding a TFT substrate and a counter substrate each having an alignment film that has been optically aligned by using UV-light, damage to the alignment film due to the UV-light can be prevented without using a light shielding mask. A UV-light absorption layer is formed between each black matrix on the counter substrate. The TFT and counter substrates are sealed at their periphery by a resin that is cured by UV-light radiated from the counter substrate side. Since the absorption layer has a high absorbability to UV-light at a wavelength of 300 nm or less that degrades the alignment film, damage to the alignment film due to the UV-light for curing the resin can be prevented. Thus, provision of a light shielding mask for shielding the UV-light for the display region can be saved.
    Type: Application
    Filed: October 26, 2015
    Publication date: February 11, 2016
    Applicant: JAPAN DISPLAY INC.
    Inventors: Noboru KUNIMATSU, Yuko MATSUMOTO, Yasushi TOMIOKA, Masateru MORIMOTO, Atsuhiro KATAYAMA
  • Patent number: 9201273
    Abstract: In the step of curing a resin for bonding a TFT substrate and a counter substrate each having an alignment film that has been optically aligned by using UV-light, damage to the alignment film due to the UV-light can be prevented without using a light shielding mask. A UV-light absorption layer is formed between each black matrix on the counter substrate. The TFT and counter substrates are sealed at their periphery by a resin that is cured by UV-light radiated from the counter substrate side. Since the absorption layer has a high absorbability to UV-light at a wavelength of 300 nm or less that degrades the alignment film, damage to the alignment film due to the UV-light for curing the resin can be prevented. Thus, provision of a light shielding mask for shielding the UV-light for the display region can be saved.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: December 1, 2015
    Assignee: Japan Display Inc.
    Inventors: Noboru Kunimatsu, Yuko Matsumoto, Yasushi Tomioka, Masateru Morimoto, Atsuhiro Katayama
  • Publication number: 20150309373
    Abstract: In the step of curing a resin for bonding a TFT substrate and a counter substrate each having an alignment film that has been optically aligned by using UV-light, damage to the alignment film due to the UV-light can be prevented without using a light shielding mask. A UV-light absorption layer is formed between each black matrix on the counter substrate. The TFT and counter substrates are sealed at their periphery by a resin that is cured by UV-light radiated from the counter substrate side. Since the absorption layer has a high absorbability to UV-light at a wavelength of 300 nm or less that degrades the alignment film, damage to the alignment film due to the UV-light for curing the resin can be prevented. Thus, provision of a light shielding mask for shielding the UV-light for the display region can be saved.
    Type: Application
    Filed: July 1, 2015
    Publication date: October 29, 2015
    Applicant: JAPAN DISPLAY INC.
    Inventors: Noboru KUNIMATSU, Yuko MATSUMOTO, Yasushi TOMIOKA, Masateru MORIMOTO, Atsuhiro KATAYAMA
  • Patent number: 9104071
    Abstract: In the step of curing a resin for bonding a TFT substrate and a counter substrate each having an alignment film that has been optically aligned by using UV-light, damage to the alignment film due to the UV-light can be prevented without using a light shielding mask. A UV-light absorption layer is formed between each black matrix on the counter substrate. The TFT and the counter substrates are sealed at their periphery by a resin that is cured by UV-light radiated from the counter substrate side. Since the absorption layer has a high absorbability to UV-light at a wavelength of 300 nm or less that degrades the alignment film, damage to the alignment film due to the UV-light for curing the resin can be prevented. Thus, provision of a light shielding mask for shielding the UV-light for the display region can be saved.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: August 11, 2015
    Assignee: Japan Display Inc.
    Inventors: Noboru Kunimatsu, Yuko Matsumoto, Yasushi Tomioka, Masateru Morimoto, Atsuhiro Katayama
  • Publication number: 20150070636
    Abstract: In the step of curing a resin for bonding a TFT substrate and a counter substrate each having an alignment film that has been optically aligned by using UV-light, damage to the alignment film due to the UV-light can be prevented without using a light shielding mask. A UV-light absorption layer is formed between each black matrix on the counter substrate. The TFT and counter substrates are sealed at their periphery by a resin that is cured by UV-light radiated from the counter substrate side. Since the absorption layer has a high absorbability to UV-light at a wavelength of 300 nm or less that degrades the alignment film, damage to the alignment film due to the UV-light for curing the resin seal material can be prevented. Thus, provision of a light shielding mask for shielding the UV-light for the display region can be saved.
    Type: Application
    Filed: November 14, 2014
    Publication date: March 12, 2015
    Applicant: JAPAN DISPLAY INC.
    Inventors: Noboru KUNIMATSU, Yuko MATSUMOTO, Yasushi TOMIOKA, Masateru MORIMOTO, Atsuhiro KATAYAMA
  • Patent number: 8908134
    Abstract: In the step of curing a resin for bonding a TFT substrate and a counter substrate each having an alignment film that has been optically aligned by using UV-light, damage to the alignment film due to the UV-light can be prevented without using a light shielding mask. A UV-light absorption layer is formed between each black matrix on the counter substrate. The TFT and counter substrates are sealed at their periphery by a resin that is cured by UV-light radiated from the counter substrate side. Since the absorption layer has a high absorbability to UV-light at a wavelength of 300 nm or less that degrades the alignment film, damage to the alignment film due to the UV-light for curing the resin can be prevented. Thus, provision of a light shielding mask for shielding the UV-light for the display region can be saved.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: December 9, 2014
    Assignee: Japan Display Inc.
    Inventors: Noboru Kunimatsu, Yuko Matsumoto, Yasushi Tomioka, Masateru Morimoto, Atsuhiro Katayama