Patents Assigned to TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
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Patent number: 12131710Abstract: A backlight driving method is provided. The method includes: determining a first duration of a first active pulse phase in a backlight driving signal corresponding to a target frame of a to-be displayed picture in a display panel, based on a target duty ratio and a first period corresponding to a target previous frame; wherein the target previous frame is a frame preceding the target frame, and the backlight driving signal is configured to drive a backlight of the display panel; and determining a second duration based on a maximum period corresponding to a frame at a lowest refresh frequency of the display panel and the first period, to delay a start time of the first active pulse phase based on the second duration.Type: GrantFiled: April 27, 2023Date of Patent: October 29, 2024Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Xinhong Chen, Yun Zhang, Ling Xu
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Patent number: 12132307Abstract: A current limiting circuit includes a first voltage terminal, a second voltage terminal, a first transistor and a current limiting module. The first transistor includes an input terminal and an output terminal of the first transistor that are connected in series on a path formed by the first voltage terminal and the second voltage terminal. The current limiting module is electrically connected to a control terminal of the first transistor. The current limiting module is configured to output a control signal to the control terminal of the first transistor for controlling a state of the first transistor so that a current limiting value of the current limiting circuit is adjustable.Type: GrantFiled: July 29, 2021Date of Patent: October 29, 2024Assignee: TCL China Star Optoelectronics Technology Co., Ltd.Inventor: Haoran Li
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Patent number: 12131093Abstract: A method for eliminating a splicing gap of splicing screens and a display device are provided. The method includes: acquiring a first pixel value and a second pixel value; acquiring an image to be displayed; acquiring a first display area and a second display area; determining a first display image and a second display image according to the first display area, the second display area, and the image to be displayed if an edge area is adjusted from the first pixel value to the second pixel value; and displaying the first display image and the second display image.Type: GrantFiled: December 20, 2021Date of Patent: October 29, 2024Assignees: HUIZHOU CHINA STAR OPTOELECTRONICS DISPLAY CO., LTD., TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Juncheng Xiao, Meinan Li
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Patent number: 12130523Abstract: An electrostatic protection circuit, a power management chip, and a display terminal are provided. The electrostatic protection circuit includes a level shift unit and a power management unit. The electrostatic protection circuit also includes a clamping module. An input terminal of the clamping module receives an electrostatic detection signal. An output terminal of the clamp module outputs a fault detection signal. The output terminal of the clamp module continues to output a high electrical potential when the electrostatic detection signal transits from a low electrical potential to the high electrical potential until the power management unit stops operating.Type: GrantFiled: December 20, 2021Date of Patent: October 29, 2024Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Fangyun Liu
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Patent number: 12130516Abstract: A hybrid display device and a spliced display device are provided. The hybrid display device includes a display panel and a light-emitting module. The light-emitting module includes a backlight module and a display module. The backlight module is disposed corresponding to a display area, and the display module is disposed corresponding to a border area and is configured for image display in the border area. The light-emitting module integrates the backlight module for providing backlight to the display area and the display module for displaying images in the border area.Type: GrantFiled: April 15, 2022Date of Patent: October 29, 2024Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Feng Zheng, Wenxue Huo
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Patent number: 12124125Abstract: The present application provides a display panel and an electronic device, the display panel includes at least two sub-boards spliced to each other, and each of the sub-boards includes a first display area and a second display area disposed at a periphery of the first display area, wherein a plurality of light-emitting devices are arranged on the first substrate or the second substrate corresponding to the second display area, and the plurality of light-emitting devices can enable the second display area to display a picture, so as to eliminate splicing gaps at splicing positions, thereby alleviating the technical problem of the splicing gaps in existing liquid crystal display splicing screens.Type: GrantFiled: May 13, 2022Date of Patent: October 22, 2024Assignee: TCL China Star Optoelectronics Technology Co., Ltd.Inventor: Bo Sun
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Patent number: 12124136Abstract: A display panel and a liquid crystal display device are disclosed. The display panel includes a first substrate and a second substrate disposed opposite to each other, a display layer, and a sealant coating area defined in the display panel. Part of the display panel corresponding to the sealant coating area of a first side portion, a second side portion, and a third side portion includes a circuit unit, a first via hole and a second via hole defined on the circuit unit, a first insulating layer disposed in the first via hole, a second insulating layer disposed in the second via hole, a conductive electrode disposed in the first via hole and contacting the circuit unit, and spacers disposed on the first insulating layer and the second insulating layer.Type: GrantFiled: August 9, 2021Date of Patent: October 22, 2024Assignee: TCL China Star Optoelectronics Technology Co., Ltd.Inventor: Liang Li
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Publication number: 20240345303Abstract: Disclosed are an optical film, a polarizer, and a display device. The optical film includes a resin and a light diffuser mixed with the resin. The light diffuser includes a whisker and a modifying group attached to a surface of the whisker. The modifying group has a structural formula of —X-A-R, wherein X is selected from SO3 or PO4H, A is selected from a single bond, a substituted or unsubstituted aromatic hydrocarbon group containing 6 to 20 ring atoms, or an imidazolinyl group, and R is selected from a substituted or unsubstituted alkyl group containing 2 to 20 carbon atoms, a substituted or unsubstituted siloxy group containing 2 to 20 carbon atoms, or an alkylolamide group containing 2 to 20 carbon atoms.Type: ApplicationFiled: August 31, 2023Publication date: October 17, 2024Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Ji LI, Hanming LI, Guang ZENG, Fang TAN, Hongshan YIN, Kai CHEN
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Publication number: 20240343890Abstract: The present disclosure provides a resin composition, a polarizer, and a display device, which include a first polymer and a polymer-modified whisker dispersed in the first polymer. The polymer-modified whisker includes a whisker and a second polymer attached to a surface of the whisker. The first polymer is a lipophilic polymer, and the second polymer is a lipophilic polymer.Type: ApplicationFiled: July 28, 2023Publication date: October 17, 2024Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Lesheng YU
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Publication number: 20240345296Abstract: Some embodiments of the present application disclose a polarizer and a display device, wherein the polarizer includes a polarizing layer, and a first optical functional layer on a side of the polarizing layer. The first optical functional layer includes a substrate and light-diffusing particles dispersed in the substrate. An average value of a difference between an orientation angle of an orthographic projection of a long axis of the light-diffusing particle in a first plane and an orientation angle of an absorption axis of the polarizing layer in the first plane is less than or equal to 5°.Type: ApplicationFiled: September 30, 2023Publication date: October 17, 2024Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Kai CHEN, Ji LI, Fang TAN
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Publication number: 20240345435Abstract: The present application provides a polarizer and a liquid crystal display device. The polarizer includes a resin layer, the resin layer includes a whisker, an acute angle is formed by a long-axis direction of each of the whiskers and a bottom surface of the resin layer, and the acute angle is greater than 0° and less than or equal to 40°.Type: ApplicationFiled: June 21, 2023Publication date: October 17, 2024Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Ji LI, Hanming LI, Guang ZENG, Fang TAN, Hongshan YIN, Kai CHEN
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Publication number: 20240346975Abstract: The present application provides a display device driving method and a display device. In the display device driving method, when optimal common voltages of other grayscales are determined using an optimal common voltage of a standard grayscale, and when grayscale shift occurs in the other grayscales, the optimal common voltages of the other grayscales are corrected, so that correct common voltages can be adopted when the display device is driven, and problems such as screen flicker caused by the grayscale shift in the display device are prevented.Type: ApplicationFiled: June 21, 2024Publication date: October 17, 2024Applicants: HUIZHOU CHINA STAR OPTOELECTRONICS DISPLAY CO., LTD., TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Yong LEI
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Patent number: 12118920Abstract: A display panel and a driving method thereof are provided. The display panel includes a power supply module, a driving module, a current detection module, and a control module. The current detection module detects a driving current of the driving module and outputs a first detection signal when a driving current is greater than a threshold current. The control module receives the first detection signal, regulates and outputs a first data voltage equal to a driving voltage according to the first detection signal, and transmits the first data voltage into the driving module.Type: GrantFiled: April 30, 2021Date of Patent: October 15, 2024Assignee: TCL China Star Optoelectronics Technology Co., Ltd.Inventor: Wenfang Li
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Patent number: 12117689Abstract: The present application provides a polarizer and a liquid crystal display device. The polarizer includes a resin layer, the resin layer includes a whisker, an acute angle is formed by a long-axis direction of each of the whiskers and a bottom surface of the resin layer, and the acute angle is greater than 0° and less than or equal to 40°.Type: GrantFiled: June 21, 2023Date of Patent: October 15, 2024Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Ji Li, Hanming Li, Guang Zeng, Fang Tan, Hongshan Yin, Kai Chen
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Patent number: 12118917Abstract: A driving system and a display panel are provided. The driving system includes a timing controller and a driving chip. The driving chip receives the video signal and processes the video signal to output a characteristic current or a regular current to the display panel. The driving chip outputs the characteristic current to the display panel when the driving chip receives the characteristic video signal and to output the regular current to the display panel when the driving chip receives the regular video signal, and the characteristic current is smaller than regular current. The driving system of the display panel according to the present disclosure could alleviate the capacitor coupling effect caused by the large voltage jump introduced by the huge gray value difference when the display panel in a frame transition and thus improve the horizontal crosstalk of the display panel.Type: GrantFiled: July 26, 2021Date of Patent: October 15, 2024Assignee: TCL China Star Optoelectronics Technology Co., Ltd.Inventor: Wenfang Li
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Patent number: 12118956Abstract: The present application provides a display panel control method and a display module. A display voltage corresponding to corresponding pixel unit can be compensated for based on a difference between a first feed-through voltage generated by a pixel electrode when a first transistor is turned from on to off and a second feed-through voltage generated by a common electrode when a second transistor is turned from on to off, so as to improve the problem such as the flicker or the image sticking in the display picture due to the unevenness of the feed-through voltages.Type: GrantFiled: June 16, 2022Date of Patent: October 15, 2024Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Ruiming Huang
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Patent number: 12112676Abstract: A demura method for a display panel includes the steps: obtaining brightness data of a display image at a gray scale value; calculating the brightness data of the display image to obtain demura data of the pixel; dividing bits of the demura data of the pixel into first bits and second bits according to a bit length of the pixel, setting an integer gray scale value of the pixel according to the first bits, and setting a mixed gray scale value of the pixel according to the second bits.Type: GrantFiled: November 3, 2021Date of Patent: October 8, 2024Assignees: HUIZHOU CHINA STAR OPTOELECTRONICS DISPLAY CO., LTD., TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Jinfeng Liu, Yue Fan
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Patent number: 12112686Abstract: The present application provides a driving method, a driving device, and a display terminal of a display panel. The display panel includes light emitting elements. The driving method includes: obtaining a grayscale data of a displayed image; determining a target current level from preset multiple current levels according to the grayscale data; determining a pulse width modulation signal according to the grayscale data; and driving the light emitting elements to emit light according to the target current level and the pulse width modulation signal.Type: GrantFiled: May 21, 2021Date of Patent: October 8, 2024Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Haoran Li, Xiong Hu
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Patent number: 12112672Abstract: The disclosure discloses a drive circuit included a first transistor electrically connected to a first control terminal, a first voltage terminal, and a first node; an inductor electrically connected to the first node and a second voltage terminal; a first diode electrically connected to a grounding terminal and the first node; a first capacitor electrically connected to a second voltage terminal and the grounding terminal; and a discharging circuit module electrically connected to the first node and the grounding terminal to provide a discharging circuit to discharge the capacitor.Type: GrantFiled: August 24, 2021Date of Patent: October 8, 2024Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Haoran Li
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Patent number: 12111529Abstract: A splicing display panel and a splicing display device are provided. The splicing display panel includes at least two spliced first display modules and at least one second display module. There is a seam between two adjacent first display modules. A portion of the first display module corresponding to a bezel area is provided with an accommodating slot. The accommodating slot of one of the first display modules is spliced with the accommodating slot of another one of the first display modules to form an accommodating cavity. The at least one second display module is arranged in the accommodating cavity, and the second display module covers the seam.Type: GrantFiled: May 18, 2022Date of Patent: October 8, 2024Assignee: TCL China Star Optoelectronics Technology Co., Ltd.Inventors: Lin Li, Bo Sun, Feng Zheng, Yichen Bai, Meng Chen