Patents by Inventor ZIFANG SU
ZIFANG SU 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: 11269204Abstract: A viewing angle switchable liquid crystal display device includes a display panel. The display panel includes a first substrate, a second substrate disposed opposite the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The second substrate is provided with a first electrode and a second electrode. The first electrode is a common electrode, and the second electrode is a pixel electrode. The first substrate is provided with a third electrode for controlling the switching of the viewing angle. A periodic alternating voltage is applied to the third electrode when the viewing angle of the liquid crystal display device is switched, and a period of the periodic alternating voltage is an even multiple of a refresh period of each frame of the display panel.Type: GrantFiled: December 1, 2016Date of Patent: March 8, 2022Assignee: INFOVISION OPTOELECTRONICS (KUNSHAN) CO., LTD.Inventors: Te-Chen Chung, Chia-Te Liao, Zifang Su, Limei Jiang
-
Patent number: 11187928Abstract: A method for driving a liquid crystal display device capable of switching between a wide viewing angle and a narrow viewing angle. In a first viewing angle mode, a direct-current common voltage is applied to a common electrode and voltage signals are applied to a first bias electrode and a second bias electrode. In a second viewing angle mode, a direct-current common voltage is applied to the common electrode, a first alternating-current voltage is applied to the first bias electrode and a second alternating-current voltage is applied to the second bias electrode. In addition, in the second viewing angle mode, pixel units covered by each first electrode strip of the first bias electrode have alternating positive and negative polarities, and pixel units covered by each second electrode strip of the second bias electrode have alternating positive and negative polarities.Type: GrantFiled: July 4, 2017Date of Patent: November 30, 2021Assignee: INFOVISION OPTOELECTRONICS (KUNSHAN) CO., LTD.Inventors: Te-Chen Chung, Chia-Te Liao, Zifang Su, Limei Jiang
-
Publication number: 20210286206Abstract: A viewing angle switchable liquid crystal display device includes a display panel. The display panel includes a first substrate, a second substrate disposed opposite the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The second substrate is provided with a first electrode and a second electrode. The first electrode is a common electrode, and the second electrode is a pixel electrode. The first substrate is provided with a third electrode for controlling the switching of the viewing angle. A periodic alternating voltage is applied to the third electrode when the viewing angle of the liquid crystal display device is switched, and a period of the periodic alternating voltage is an even multiple of a refresh period of each frame of the display panel.Type: ApplicationFiled: December 1, 2016Publication date: September 16, 2021Inventors: TE-CHEN CHUNG, CHIA-TE LIAO, ZIFANG SU, LIMEI JIANG
-
Publication number: 20200159050Abstract: A method for driving a liquid crystal display device capable of switching between a wide viewing angle and a narrow viewing angle. In a first viewing angle mode, a direct-current common voltage is applied to a common electrode and voltage signals are applied to a first bias electrode and a second bias electrode. In a second viewing angle mode, a direct-current common voltage is applied to the common electrode, a first alternating-current voltage is applied to the first bias electrode and a second alternating-current voltage is applied to the second bias electrode. In addition, in the second viewing angle mode, pixel units covered by each first electrode strip of the first bias electrode have alternating positive and negative polarities, and pixel units covered by each second electrode strip of the second bias electrode have alternating positive and negative polarities.Type: ApplicationFiled: July 4, 2017Publication date: May 21, 2020Inventors: TE-CHEN CHUNG, CHIA-TE LIAO, ZIFANG SU, LIMEI JIANG
-
Patent number: 10371971Abstract: An LCD with switchable viewing angle includes a first substrate, second substrate, and a liquid crystal layer. The first substrate is provided with a first electrode and a first alignment film thereon. The second substrate is provided with a second electrode, a third electrode and a second alignment film thereon. The liquid crystal layer is disposed between the first alignment film and the second alignment film, and includes a plurality of liquid crystal molecules. All of the liquid crystal molecules in the liquid crystal layer are tilted at the same pretilt angle relative to the alignment films. When no bias voltage is applied to the first electrode, the LCD shows a narrow viewing angle; and when a bias voltage is applied to the first electrode, the LCD shows a wide viewing angle.Type: GrantFiled: July 12, 2016Date of Patent: August 6, 2019Assignee: INFOVISION OPTOELECTRONICS (KUSHAN) CO., LTD.Inventors: Zifang Su, Yaqin Xu
-
Patent number: 10288914Abstract: An LCD with switchable viewing angle includes a first substrate, second substrate, and a liquid crystal layer. The first substrate is provided with a first electrode and a second electrode. In an embodiment, the first electrode is a pixel electrode, and the second electrode is a common electrode. The second substrate is provided with a third electrode. Liquid crystal molecules in the liquid crystal layer are positive liquid crystal molecules. When a first bias voltage is applied to the third electrode, the LCD is displayed with a wide viewing angle; and when a second bias voltage greater than the first bias voltage is applied to the third electrode, the LCD is displayed with a narrow viewing angle.Type: GrantFiled: July 12, 2016Date of Patent: May 14, 2019Assignee: INFOVISION OPTOELECTRONICS (KUNSHAN) CO., LTD.Inventors: Te-Chen Chung, Zifang Su, Limei Jiang
-
Patent number: 10002578Abstract: An LCD device includes a color filter (CF) substrate, a thin film transistor (TFT) substrate and a liquid crystal layer. The CF substrate includes a first transparent substrate, a CF layer, a black matrix and a shielding layer. The TFT substrate includes a second transparent substrate, a pixel electrode, a common electrode, and an insulating layer disposed between the pixel electrode and the common electrode. A control signal in the form of an AC voltage is provided to the shielding layer of the CF substrate, and a DC common voltage is provided to the common electrode. An alternating electric field is generated between the AC voltage of the control signal of the shielding layer and the DC common voltage of the common electrode to push impurity ions existed in the liquid crystal layer to swing up and down in the liquid crystal layer.Type: GrantFiled: June 15, 2016Date of Patent: June 19, 2018Assignee: INFOVISION OPTOELECTRONICS (KUNSHAN) CO., LTD.Inventors: Te-Chen Chung, Dalei Zhang, Zifang Su, Yongxin Ruan
-
Patent number: 9983422Abstract: An LCD panel includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate is provided with a first electrode thereon. The first electrode is provided with a plurality of stripe-like control electrodes for controlling a viewing angle of the LCD panel. The second substrate is provided with a second electrode and a third electrode thereon. The second electrode is a common electrode for inputting a common voltage to the LCD panel. The third electrode is a pixel electrode formed in each pixel of the LCD panel. When no bias voltage is applied to the stripe-like control electrodes of the first electrode, the LCD panel is displayed with a wide viewing angle; and when a bias voltage is applied to the stripe-like control electrodes of the first electrode, the LCD panel is displayed with a narrow viewing angle.Type: GrantFiled: May 19, 2016Date of Patent: May 29, 2018Assignee: INFOVISION OPTOELECTRONICS (KUNSHAN) CO., LTD.Inventors: Te-Chen Chung, Zifang Su, Mengqing Zhu
-
Patent number: 9798169Abstract: An LCD with switchable viewing angle includes a first substrate, second substrate, and a liquid crystal layer. The first substrate is provided with a first electrode and a first alignment film. The second substrate is provided with a second electrode, a third electrode and a second alignment film. The liquid crystal molecules adjacent to the first alignment film are tilted at a first pretilt angle. The liquid crystal molecules adjacent to the second alignment film are tilted at a second pretilt angle. The second pretilt angle is in the range of 30° to 50°, and the first pretilt angle is in the range of 0° to 5°. When no bias voltage is applied to the first electrode, the LCD is displayed with a narrow viewing angle; and when a bias voltage is applied to the first electrode, the LCD is displayed with a wide viewing angle.Type: GrantFiled: July 21, 2016Date of Patent: October 24, 2017Assignee: INFOVISION OPTOELECTRONICS (KUNSHAN) CO., LTD.Inventors: Zifang Su, Limei Jiang
-
Patent number: 9720266Abstract: An LCD with switchable viewing angle includes a first substrate, second substrate, and a liquid crystal layer. The first substrate is provided with a first electrode and a first alignment film. The second substrate is provided with a second electrode, a third electrode and a second alignment film. The liquid crystal molecules adjacent to the first alignment film are tilted at a first pretilt angle. The liquid crystal molecules adjacent to the second alignment film are tilted at a second pretilt angle. The first pretilt angle and the second pretilt angle have the same magnitude but are contrary in direction. When no bias voltage is applied to the first electrode, the LCD is displayed with a narrow viewing angle; and when a bias voltage is applied to the first electrode, the LCD is displayed with a wide viewing angle.Type: GrantFiled: July 21, 2016Date of Patent: August 1, 2017Assignee: INFOVISION OPTOELECTRONICS (KUNSHAN) CO., LTD.Inventors: Zifang Su, Yaqin Xu
-
Publication number: 20170184885Abstract: An LCD with switchable viewing angle includes a first substrate, second substrate, and a liquid crystal layer. The first substrate is provided with a first electrode and a second electrode. In an embodiment, the first electrode is a pixel electrode, and the second electrode is a common electrode. The second substrate is provided with a third electrode. Liquid crystal molecules in the liquid crystal layer are positive liquid crystal molecules. When a first bias voltage is applied to the third electrode, the LCD is displayed with a wide viewing angle; and when a second bias voltage greater than the first bias voltage is applied to the third electrode, the LCD is displayed with a narrow viewing angle.Type: ApplicationFiled: July 12, 2016Publication date: June 29, 2017Inventors: TE-CHEN CHUNG, ZIFANG SU, LIMEI JIANG
-
Publication number: 20170123241Abstract: An LCD with switchable viewing angle includes a first substrate, second substrate, and a liquid crystal layer. The first substrate is provided with a first electrode and a first alignment film thereon. The second substrate is provided with a second electrode, a third electrode and a second alignment film thereon. The liquid crystal layer is disposed between the first alignment film and the second alignment film, and includes a plurality of liquid crystal molecules. All of the liquid crystal molecules in the liquid crystal layer are tilted at the same pretilt angle relative to the alignment films. When no bias voltage is applied to the first electrode, the LCD shows a narrow viewing angle; and when a bias voltage is applied to the first electrode, the LCD shows a wide viewing angle.Type: ApplicationFiled: July 12, 2016Publication date: May 4, 2017Inventors: ZIFANG SU, YAQIN XU
-
Publication number: 20170061909Abstract: An LCD device includes a color filter (CF) substrate, a thin film transistor (TFT) substrate and a liquid crystal layer. The CF substrate includes a first transparent substrate, a CF layer, a black matrix and a shielding layer. The TFT substrate includes a second transparent substrate, a pixel electrode, a common electrode, and an insulating layer disposed between the pixel electrode and the common electrode. A control signal in the form of an AC voltage is provided to the shielding layer of the CF substrate, and a DC common voltage is provided to the common electrode. An alternating electric field is generated between the AC voltage of the control signal of the shielding layer and the DC common voltage of the common electrode to push impurity ions existed in the liquid crystal layer to swing up and down in the liquid crystal layer.Type: ApplicationFiled: June 15, 2016Publication date: March 2, 2017Inventors: TE-CHEN CHUNG, DALEI ZHANG, ZIFANG SU, YONGXIN RUAN
-
Publication number: 20170059898Abstract: An LCD with switchable viewing angle includes a first substrate, second substrate, and a liquid crystal layer. The first substrate is provided with a first electrode and a first alignment film. The second substrate is provided with a second electrode, a third electrode and a second alignment film. The liquid crystal molecules adjacent to the first alignment film are tilted at a first pretilt angle. The liquid crystal molecules adjacent to the second alignment film are tilted at a second pretilt angle. The second pretilt angle is in the range of 30° to 50°, and the first pretilt angle is in the range of 0° to 5°. When no bias voltage is applied to the first electrode, the LCD is displayed with a narrow viewing angle; and when a bias voltage is applied to the first electrode, the LCD is displayed with a wide viewing angle.Type: ApplicationFiled: July 21, 2016Publication date: March 2, 2017Inventors: ZIFANG SU, LIMEI JIANG
-
Publication number: 20170059899Abstract: An LCD with switchable viewing angle includes a first substrate, second substrate, and a liquid crystal layer. The first substrate is provided with a first electrode and a first alignment film. The second substrate is provided with a second electrode, a third electrode and a second alignment film. The liquid crystal molecules adjacent to the first alignment film are tilted at a first pretilt angle. The liquid crystal molecules adjacent to the second alignment film are tilted at a second pretilt angle. The first pretilt angle and the second pretilt angle have the same magnitude but are contrary in direction. When no bias voltage is applied to the first electrode, the LCD is displayed with a narrow viewing angle; and when a bias voltage is applied to the first electrode, the LCD is displayed with a wide viewing angle.Type: ApplicationFiled: July 21, 2016Publication date: March 2, 2017Inventors: ZIFANG SU, YAQIN XU
-
Publication number: 20160341987Abstract: An LCD panel includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate is provided with a first electrode thereon. The first electrode is provided with a plurality of stripe-like control electrodes for controlling a viewing angle of the LCD panel. The second substrate is provided with a second electrode and a third electrode thereon. The second electrode is a common electrode for inputting a common voltage to the LCD panel. The third electrode is a pixel electrode formed in each pixel of the LCD panel. When no bias voltage is applied to the stripe-like control electrodes of the first electrode, the LCD panel is displayed with a wide viewing angle; and when a bias voltage is applied to the stripe-like control electrodes of the first electrode, the LCD panel is displayed with a narrow viewing angle.Type: ApplicationFiled: May 19, 2016Publication date: November 24, 2016Inventors: TE-CHEN CHUNG, ZIFANG SU, MENGQING ZHU