Patents by Inventor Linfeng LIU
Linfeng LIU 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: 20250108601Abstract: The present disclosure provides a printing system for printing a first board and a second board, the printing system including a conveying mechanism, a vacuum device and a drive component. The conveying mechanism is used to carry the first board. The vacuum device is used to carry the second board. The drive component drives at least one of the conveying mechanism and the vacuum device to enable the conveying mechanism or the vacuum device to drive the carried board. The present disclosure is directed to different types of boards, and printing of different types of boards is accomplished by controlling the components for carrying and driving the boards without dismounting or removing the vacuum device.Type: ApplicationFiled: September 23, 2024Publication date: April 3, 2025Inventors: Zaizai Cheng, Liang Zhu, Linfeng Liu, Jian Zhang
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Patent number: 12259715Abstract: An open application protocol for industrial equipment is disclosed. Disclosed techniques include: opening a connection between (a) an open application associated with a manufacturing execution system and (b) an instance of a data sharing interface operating on an industrial machine used in a surface mounting process, the open application being configured to communicate with any machine that implements the data sharing interface, regardless of machine type or manufacturer; discovering, by the open application via the connection, discoverable information associated with the industrial machine, the discoverable information including one or more of data items, events, commands, or alarms; and controlling, by the open application via the connection, operation of the industrial machine to control at least a portion of the surface mounting process.Type: GrantFiled: October 27, 2021Date of Patent: March 25, 2025Assignee: Illinois Tool Works Inc.Inventors: Michael E. Donelan, Linfeng Liu, John Anthony Cronin
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Publication number: 20240297175Abstract: A method for preparing a display panel, a display panel, and an electronic device are provided. In the method for preparing a display panel provided in the embodiments of the present disclosure, a TFT device is prepared on a TFT substrate, the TFT device is then transferred from the TFT substrate to a circuit board in a manner of transfer for twice, and a light-emitting device is transferred on the circuit board, so that a display panel driven by the TFT device is obtained. The production costs are low, and the display panel can achieve better electrical performance.Type: ApplicationFiled: December 8, 2021Publication date: September 5, 2024Inventor: Linfeng LIU
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Patent number: 11996028Abstract: A pixel circuit and a display panel are provided in the present application. The pixel circuit includes a driving module, a pulse amplitude modulation module, a pulse width modulation module, an internal compensation module, and an electrical potential maintaining module. High grayscale display is controlled by the pulse amplitude modulation module in a pulse amplitude modulation manner, low grayscale display is controlled by the pulse width modulation module in a pulse width modulation manner, and the internal compensation module performs internal compensation on a first terminal of the driving module, to realize an internal compensation and hybrid driving of the pixel circuit.Type: GrantFiled: January 10, 2022Date of Patent: May 28, 2024Assignee: TCL China Star Optoelectronics Technology Co., Ltd.Inventor: Linfeng Liu
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Patent number: 11908804Abstract: The present invention provides an array substrate and a display panel. The array substrate includes a substrate, a first metal layer, a second metal layer, a pixel electrode layer, and an alignment identification terminal that are sequentially stacked. The alignment identification terminal is disposed in at least one of the first metal layer and the second metal layer, and is at least partially disposed in a sub-pixel electrode region. An arrangement of the alignment identification terminal is no longer limited by a narrow frame, and a size can be made larger to meet the needs of a CCD identification, ensuring an accuracy of identification and alignment.Type: GrantFiled: December 17, 2019Date of Patent: February 20, 2024Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Linfeng Liu, Aihua Tang, Yanxi Ye, Chihming Yang, Yunglun Lin
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Publication number: 20240047464Abstract: The present application discloses a display panel and a manufacturing method thereof. The display panel comprises: a first substrate and a second substrate, and the first substrate is provided with a driving circuit; the second substrate is arranged corresponding to the first substrate, and an LED is provided on a side of the second substrate facing the first substrate, and the driving circuit is employed to drive the LED to emit light. The display panel provided by the present application can solve the abnormal display problem caused by the voltage drop when the power supply passes through the thin film transistor in the driving circuit.Type: ApplicationFiled: December 22, 2021Publication date: February 8, 2024Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Linfeng Liu
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Publication number: 20240038128Abstract: A pixel circuit and a display panel are provided in the present application. The pixel circuit includes a driving module, a pulse amplitude modulation module, a pulse width modulation module, an internal compensation module, and an electrical potential maintaining module. High grayscale display is controlled by the pulse amplitude modulation module in a pulse amplitude modulation manner, low grayscale display is controlled by the pulse width modulation module in a pulse width modulation manner, and the internal compensation module performs internal compensation on a first terminal of the driving module, to realize an internal compensation and hybrid driving of the pixel circuit.Type: ApplicationFiled: January 10, 2022Publication date: February 1, 2024Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Linfeng Liu
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Patent number: 11714216Abstract: The present application provides a display panel, a manufacturing method of the display panel, and a display device. The display panel includes a display region and a non-display region. The display panel includes multiple pixels divided by a boundary line. Each pixel has corresponding area uniformity. The pixels include multiple first pixels having the area uniformity within a first predetermined range. The pixels also include multiple second pixels having the area uniformity outside the first predetermined range. A shielding block is arranged on the first pixel. Brightness of the second pixel is set according to an area of the second pixel in the display region.Type: GrantFiled: December 19, 2019Date of Patent: August 1, 2023Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Jian Xu, Linfeng Liu
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Publication number: 20230126456Abstract: An open application protocol for industrial equipment is disclosed. Disclosed techniques include: opening a connection between (a) an open application associated with a manufacturing execution system and (b) an instance of a data sharing interface operating on an industrial machine used in a surface mounting process, the open application being configured to communicate with any machine that implements the data sharing interface, regardless of machine type or manufacturer; discovering, by the open application via the connection, discoverable information associated with the industrial machine, the discoverable information including one or more of data items, events, commands, or alarms; and controlling, by the open application via the connection, operation of the industrial machine to control at least a portion of the surface mounting process.Type: ApplicationFiled: October 27, 2021Publication date: April 27, 2023Inventors: Michael E. Donelan, Linfeng Liu, John Anthony Cronin
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Publication number: 20210356631Abstract: The present application provides a display panel, a manufacturing method of the display panel, and a display device. The display panel includes a display region and a non-display region. The display panel includes multiple pixels divided by a boundary line. Each pixel has corresponding area uniformity. The pixels include multiple first pixels having the area uniformity within a first predetermined range. The pixels also include multiple second pixels having the area uniformity outside the first predetermined range. A shielding block is arranged on the first pixel. Brightness of the second pixel is set according to an area of the second pixel in the display region.Type: ApplicationFiled: December 19, 2019Publication date: November 18, 2021Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Jian XU, Linfeng LIU
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Publication number: 20210358857Abstract: The present invention provides a display panel and a display device. The display panel includes a first substrate, a second substrate, and multiple process markings. The first substrate includes multiple scan lines and multiple data lines. The scan lines and the data lines are intersected with each other to form multiple grids. The second substrate is arranged corresponding to the first substrate. The process markings are arranged on an inner surface of the first substrate. Projections of the process markings projected on the first substrate are located within projections of the grids projected on the first substrate.Type: ApplicationFiled: December 10, 2019Publication date: November 18, 2021Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventor: Linfeng LIU
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Publication number: 20210175179Abstract: The present invention provides an array substrate and a display panel. The array substrate includes a substrate, a first metal layer, a second metal layer, a pixel electrode layer, and an alignment identification terminal that are sequentially stacked. The alignment identification terminal is disposed in at least one of the first metal layer and the second metal layer, and is at least partially disposed in a sub-pixel electrode region. An arrangement of the alignment identification terminal is no longer limited by a narrow frame, and a size can be made larger to meet the needs of a CCD identification, ensuring an accuracy of identification and alignment.Type: ApplicationFiled: December 17, 2019Publication date: June 10, 2021Inventors: Linfeng LIU, Aihua TANG, Yanxi YE, Chihming YANG, Yunglun LIN
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Patent number: 10586500Abstract: The present disclosure provides a multiplexed type driver circuit, a driving method, and a display. The driver circuit may include: a fourth switch couple to a first switch and a first sub-pixel, a fifth switch couple to a second switch and a second sub-pixel, a sixth switch couple to a third switch and a third sub-pixel. The driving method may include: controlling ON and OFF of the first switch to input a data signal to the first sub-pixel; controlling ON and OFF of the second switch to input a data signal to the second sub-pixel; controlling ON of the third switch and OFF of the sixth switch to input a data signal to the third sub-pixel; and turning off the third switch after turning off the sixth switch. The durations of data signal input to the first sub-pixel, the second sub-pixel and the third sub-pixel are identical.Type: GrantFiled: October 21, 2018Date of Patent: March 10, 2020Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventor: Linfeng Liu
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Publication number: 20190384131Abstract: A LCD panel having a novel pixel design is provided, including a first substrate, a second substrate, and a liquid crystal layer disposed between the two substrates; a common electrode is arranged on a side surface of the first substrate; a plurality of gate lines and data lines are disposed on the second substrate, which define a plurality of pixel units; each of the pixel units includes a main pixel electrode and a sub-pixel electrode connected to each other, and a pattern of the main pixel electrode is different from that of the sub-pixel electrode; each of the pixel units further includes a thin film transistor connected to a gate line, and the main pixel electrode and the sub-pixel electrode acquire display signals through the thin film transistors. The disclosure can improve the viewing angle, reduce the complexity of the control circuit, and improve the aperture ratio of the pixel.Type: ApplicationFiled: November 1, 2017Publication date: December 19, 2019Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICOMDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventor: Linfeng LIU
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Publication number: 20190333457Abstract: The present disclosure provides a multiplexed type driver circuit, a driving method, and a display. The driver circuit may include: a fourth switch couple to a first switch and a first sub-pixel, a fifth switch couple to a second switch and a second sub-pixel, a sixth switch couple to a third switch and a third sub-pixel. The driving method may include: controlling ON and OFF of the first switch to input a data signal to the first sub-pixel; controlling ON and OFF of the second switch to input a data signal to the second sub-pixel; controlling ON of the third switch and OFF of the sixth switch to input a data signal to the third sub-pixel; and turning off the third switch after turning off the sixth switch. The durations of data signal input to the first sub-pixel, the second sub-pixel and the third sub-pixel are identical.Type: ApplicationFiled: October 21, 2018Publication date: October 31, 2019Inventor: Linfeng Liu
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Publication number: 20190049782Abstract: A naked eye three-dimensional liquid crystal display panel is described and has a back light source, a liquid crystal display panel and a liquid crystal lens array, wherein the liquid crystal display panel has a color filter substrate, an array substrate and a display liquid crystal layer, and the liquid crystal display panel has a plurality of pixel units. The liquid crystal lens array has a first substrate, a second substrate and a lens liquid crystal layer, and the liquid crystal lens array has a plurality of lens units, wherein a black blanket structure is disposed in the lens liquid crystal layer and between the neighboring lens units.Type: ApplicationFiled: May 3, 2017Publication date: February 14, 2019Inventor: Linfeng LIU