Patents by Inventor LIMEI JIANG
LIMEI JIANG 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: 20260244044Abstract: A display panel, a display device, and a driving method are provided. The display panel includes a first liquid crystal cell and a second liquid crystal cell; the first liquid crystal cell includes a first substrate, a second substrate, and a dye liquid crystal layer; the first substrate is provided with a viewing angle auxiliary electrode; the second substrate is provided with a viewing angle control electrode; the second liquid crystal cell includes a color filter substrate, an array substrate, and a liquid crystal layer; a reflective polarizer is provided on the side of the second liquid crystal cell away from the first liquid crystal cell; and a prism structure layer having a light diffusion effect is provided in the first liquid crystal cell and/or the second liquid crystal cell.Type: ApplicationFiled: May 30, 2023Publication date: August 20, 2026Applicant: INFOVISION OPTOELECTRONICS (KUNSHAN) CO., LTD.Inventors: Te-Chen CHUNG, Limei JIANG, Xianhe LIU, Jiajun SHEN
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Publication number: 20250164832Abstract: Disclosed are a display panel having switchable wide and narrow viewing angles and a driving method, and a display device. The display panel has a first graphic region and a second graphic region that are patterned; the display panel comprises a light adjusting box and a display box stacked on each other; the light adjusting box comprises a first substrate, a second substrate, and a first liquid crystal layer; the first substrate is provided with a common viewing angle electrode; the second substrate is provided with a first viewing angle electrode and a second viewing angle electrode working in conjunction with the common viewing angle electrode; the first viewing angle electrode corresponds to the first graphic region; the second viewing angle electrode corresponds to the second graphic region.Type: ApplicationFiled: August 8, 2022Publication date: May 22, 2025Inventors: CHIA-TE LIAO, CHIAMIN YU, LIMEI JIANG
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Patent number: 12292630Abstract: A display panel with switchable wide and narrow viewing angles, a driving method, and a display device are provided. The display panel is provided with a patterned identification area and a non-identification area. The display panel includes a light adjusting box and a display box which are arranged in a stacked manner. The light adjusting box includes a first substrate, a second substrate and a first liquid crystal layer. The first substrate is provided with a common viewing angle electrode, the second substrate is provided with a first viewing angle electrode and a second viewing angle electrode matching the common viewing angle electrode, the first viewing angle electrode corresponds to the identification pattern area, and the second viewing angle electrode corresponds to the non-identification pattern area.Type: GrantFiled: April 6, 2022Date of Patent: May 6, 2025Assignee: INFOVISION OPTOELECTRONICS (KUNSHAN) CO., LTD.Inventors: Te-Chen Chung, Jiajun Shen, Limei Jiang, Jun Jiang
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Publication number: 20240369868Abstract: A display panel with switchable wide and narrow viewing angles, a driving method, and a display device are provided. The display panel is provided with a patterned identification area and a non-identification area. The display panel includes a light adjusting box and a display box which are arranged in a stacked manner. The light adjusting box includes a first substrate, a second substrate and a first liquid crystal layer. The first substrate is provided with a common viewing angle electrode, the second substrate is provided with a first viewing angle electrode and a second viewing angle electrode matching the common viewing angle electrode, the first viewing angle electrode corresponds to the identification pattern area, and the second viewing angle electrode corresponds to the non-identification pattern area.Type: ApplicationFiled: April 6, 2022Publication date: November 7, 2024Inventors: TE-CHEN CHUNG, JIAJUN SHEN, LIMEI JIANG, JUN JIANG
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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
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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
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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
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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
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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
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Patent number: 9835886Abstract: An LCD includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate is provided with a first electrode. The first electrode is provided with a plurality of first elongated electrodes. The second substrate is provided with a second electrode and a third electrode. The second electrode is a common electrode and the third electrode is a pixel electrode. The second electrode is provided with a plurality of second elongated electrodes. The first elongated electrodes and the second elongated electrodes are arranged alternately, and the first elongated electrodes have no overlap with the second elongated electrodes. When no bias voltage is applied between the first electrode and the second electrode, the LCD is displayed with a wide viewing angle; and when a bias voltage is applied between the first electrode and the second electrode, the LCD is displayed with a narrow viewing angle.Type: GrantFiled: July 21, 2016Date of Patent: December 5, 2017Assignee: INFOVISION OPTOELECTRONICS (KUNSHAN) CO., LTD.Inventors: Limei Jiang, Xuemei Jiang, Tingting Wu, Rui Liu
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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
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Publication number: 20170192263Abstract: An LCD includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate is provided with a first electrode. The first electrode is provided with a plurality of first elongated electrodes. The second substrate is provided with a second electrode and a third electrode. The second electrode is a common electrode and the third electrode is a pixel electrode. The second electrode is provided with a plurality of second elongated electrodes. The first elongated electrodes and the second elongated electrodes are arranged alternately, and the first elongated electrodes have no overlap with the second elongated electrodes. When no bias voltage is applied between the first electrode and the second electrode, the LCD is displayed with a wide viewing angle; and when a bias voltage is applied between the first electrode and the second electrode, the LCD is displayed with a narrow viewing angle.Type: ApplicationFiled: July 21, 2016Publication date: July 6, 2017Inventors: LIMEI JIANG, XUEMEI JIANG, TINGTING WU, RUI LIU
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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
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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