Patents by Inventor Ping-Sheng Kuo
Ping-Sheng Kuo 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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Patent number: 10446100Abstract: Provided is an array substrate, including a sequence controller and gate drivers, and each of the gate drivers includes a first adjustable resistor and a gate drive unit, and one end of the first adjustable resistor is coupled to a first voltage, and the other end of the first adjustable resistor is coupled to a first input end of the gate drive unit, and the sequence controller is coupled to a control end of the first adjustable resistor to adjust a resistance value of the first adjustable resistor to make voltage difference values among the gate drive units in a preset range. In the gate driver, a first adjustable resistor is added between the first voltage and the gate drive unit. By controlling the resistance value of the first adjustable resistor, the voltages of the adjacent gate drivers are the same to prevent the appearance of the horizontal boundary.Type: GrantFiled: December 22, 2016Date of Patent: October 15, 2019Assignee: Shenzhen China Star Optoelectronics Technology Co., LtdInventors: Ping-sheng Kuo, Yu-yeh Chen, Li-wei Chu
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Patent number: 10394061Abstract: The present application discloses a liquid crystal display device driving method and a liquid crystal display device, the driving method including: receiving the image data entered into the timing controller; calculating an area in the display image corresponding to the image data having the coupling phenomenon exceeds a predetermined level; determining whether or not the area in the display image corresponding to the image data having the coupling phenomenon exceeds a predetermined area is greater than or equal to the predetermined area; when the area is greater than or equal to the predetermined area, a two rows inversion manner is adopted, wherein when the method of two rows inversion is adopted to drive the liquid crystal display device, the driving direction of the data signal S(n+2) and the data signal S(n+3) are in contrast at the same time, wherein n is zero or a positive even number.Type: GrantFiled: January 13, 2017Date of Patent: August 27, 2019Assignee: Shenzhen China Star Optoelectronics Technology Co., LtdInventors: Ping-sheng Kuo, Li-wei Chu, Yu-yeh Chen, Jian Gao
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Patent number: 10366659Abstract: The present disclosure relates to an array substrate for enhancing gate driver on array (GOA) reliability. The array substrate includes dual and adjacent VSS traces in a rim. The VSS traces include a first VSS trace and a second VSS trace, and 2n number of regulation capacitors are configured between the CF_COM trace and the second VSS trace via metal material in different layers. Alternatively, a single third VSS trace is configured between the GOA circuit and the CF_COM in the active display area (AA), and 2n number of regulation capacitors are configured between the CF_COM trace and the third VSS trace via metal material in different layers. The array substrate may be adopted in the mass production of the TFT display panels.Type: GrantFiled: January 12, 2017Date of Patent: July 30, 2019Assignee: Shenzhen China Star Optoelectronics Technology Co., LtdInventors: Tianhong Wang, Ping-sheng Kuo
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Patent number: 10276115Abstract: The invention provides a display circuit and a LCD having the display circuit. The display circuit includes a display unit, a level shifter, a timer controller, and scanning circuits. Each scanning circuit includes a first voltage stabilizing circuit including first and second field effect transistors. Source electrodes of the two transistors are connected to the level shifter. The scanning circuits send a first group of scanning signals to the display unit in sequence in a first period of time, and send a second group of scanning signals to the display unit in sequence in a second period of time. The timer controller sends a control signal to the level shifter in a time difference between the two groups of signals. The level shifter converts the control signal to a high level signal and sends it to the two transistors to enable the two transistors to be under reverse bias.Type: GrantFiled: September 27, 2016Date of Patent: April 30, 2019Assignee: Shenzhen China Star Optoelectronics Technology Co., LtdInventors: Ping-Sheng Kuo, Tianhong Wang
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Patent number: 10262577Abstract: A scanning driver circuit includes N stage-connected GOA units. An Nth-stage GOA unit includes a pull-up part, a pull-up control part, a pull-down holding part, and a key pull-down part. The pull-up part is connected to an output terminal of an Nth stage gate signal. The pull-up control part is connected to the output terminal of the Nth stage gate signal. The pull-down holding part receives a first direct current voltage and a second direct current voltage. The key pull-down part connected to the Nth stage gate signal receives the first direct current voltage. The pull-down holding part is formed by a first pull-down holding circuit and a second pull-down holding circuit. The first pull-down holding circuit and the second pull-down holding circuit operate alternatively so that the output terminal of the Nth stage gate signal and the node can hold at a negative voltage level.Type: GrantFiled: January 17, 2017Date of Patent: April 16, 2019Assignee: Shenzhen China Star Optoelectronics Technology Co., LtdInventors: Tianhong Wang, Ping-sheng Kuo
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Patent number: 10223983Abstract: The present invention provides a brightness compensation method, a system and a display panel in a Demura system. The method comprises obtaining an included angle ? between a connection line of a pixel dot and a center point of a camera lens and a horizontal line as a camera is fixed; obtaining a brightness value f(?) corresponding to the ? according to a pre-stored angle-brightness relationship; obtaining a correction brightness value of the pixel dot according to a calculation of the f(?) and a default formula, and performing brightness compensation to the display panel according to the brightness value of the pixel dot after correction. The technical solution provided by the present invention can reduce the influence of the view angle to the brightness and the influence of cos4 ? to the brightness, and thus, it possesses the benefit of the brightness decay offset reduction.Type: GrantFiled: January 14, 2016Date of Patent: March 5, 2019Assignee: Shenzhen China Star Optoelectronics Technology Co., LtdInventors: Ping-sheng Kuo, Liwei Zhu
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Publication number: 20180374441Abstract: Provided is an array substrate, including a sequence controller and gate drivers, and each of the gate drivers includes a first adjustable resistor and a gate drive unit, and one end of the first adjustable resistor is coupled to a first voltage, and the other end of the first adjustable resistor is coupled to a first input end of the gate drive unit, and the sequence controller is coupled to a control end of the first adjustable resistor to adjust a resistance value of the first adjustable resistor to make voltage difference values among the gate drive units in a preset range. In the gate driver, a first adjustable resistor is added between the first voltage and the gate drive unit. By controlling the resistance value of the first adjustable resistor, the voltages of the adjacent gate drivers are the same to prevent the appearance of the horizontal boundary.Type: ApplicationFiled: December 22, 2016Publication date: December 27, 2018Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Ping-sheng KUO, Yu-yeh CHEN, Li-wei CHU
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Publication number: 20180336830Abstract: The present disclosure relates to an array substrate for enhancing gate driver on array (GOA) reliability. The array substrate includes dual and adjacent VSS traces in a rim. The VSS traces include a first VSS trace and a second VSS trace, and 2n number of regulation capacitors are configured between the CF_COM trace and the second VSS trace via metal material in different layers. Alternatively, a single third VSS trace is configured between the GOA circuit and the CF_COM in the active display area (AA), and 2n number of regulation capacitors are configured between the CF_COM trace and the third VSS trace via metal material in different layers. The array substrate may be adopted in the mass production of the TFT display panels.Type: ApplicationFiled: January 12, 2017Publication date: November 22, 2018Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.Inventors: Tianhong WANG, Ping-sheng KUO
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Publication number: 20180275440Abstract: The present application discloses a liquid crystal display device driving method and a liquid crystal display device, the driving method including: receiving the image data entered into the timing controller; calculating an area in the display image corresponding to the image data having the coupling phenomenon exceeds a predetermined level; determining whether or not the area in the display image corresponding to the image data having the coupling phenomenon exceeds a predetermined area is greater than or equal to the predetermined area; when the area is greater than or equal to the predetermined area, a two rows inversion manner is adopted, wherein when the method of two rows inversion is adopted to drive the liquid crystal display device, the driving direction of the data signal S(n+2) and the data signal S(n+3) are in contrast at the same time, wherein n is zero or a positive even number.Type: ApplicationFiled: January 13, 2017Publication date: September 27, 2018Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Ping-sheng KUO, Li-wei CHU, Yu-yeh CHEN, Jian GAO
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Publication number: 20180211583Abstract: A scanning driver circuit includes N stage-connected GOA units. An Nth-stage GOA unit includes a pull-up part, a pull-up control part, a pull-down holding part, and a key pull-down part. The pull-up part is connected to an output terminal of an Nth stage gate signal. The pull-up control part is connected to the output terminal of the Nth stage gate signal. The pull-down holding part receives a first direct current voltage and a second direct current voltage. The key pull-down part connected to the Nth stage gate signal receives the first direct current voltage. The pull-down holding part is formed by a first pull-down holding circuit and a second pull-down holding circuit. The first pull-down holding circuit and the second pull-down holding circuit operate alternatively so that the output terminal of the Nth stage gate signal and the node can hold at a negative voltage level.Type: ApplicationFiled: January 17, 2017Publication date: July 26, 2018Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Tianhong WANG, Ping-sheng KUO
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Publication number: 20180204517Abstract: Provided are an AMOLED display drive method and a drive circuit. The drive method comprises detecting whether a gray scale of a preset region in the AMOLED display is larger than a preset gray scale, and detecting whether pixel amounts corresponded with a width and a length of the preset region are larger than preset pixel amounts; calculating a condition that a threshold voltage of each drive thin film transistor of the preset region changes along with time in a preset duration; compensating a data signal loaded to the thin film transistor according to the condition that the threshold voltage of the drive thin film transistor of the preset region changes along with time to make a variation of the data signal along with time equal to a variation of the threshold voltage along with time; using the data signal after being compensated to drive the AMOLED display.Type: ApplicationFiled: August 31, 2016Publication date: July 19, 2018Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Ping-sheng KUO, Li-wei CHU
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Publication number: 20180190221Abstract: The invention provides a display circuit and a LCD having the display circuit. The display circuit includes a display unit, a level shifter, a timer controller, and scanning circuits. Each scanning circuit includes a first voltage stabilizing circuit including first and second field effect transistors. Source electrodes of the two transistors are connected to the level shifter. The scanning circuits send a first group of scanning signals to the display unit in sequence in a first period of time, and send a second group of scanning signals to the display unit in sequence in a second period of time. The timer controller sends a control signal to the level shifter in a time difference between the two groups of signals. The level shifter converts the control signal to a high level signal and sends it to the two transistors to enable the two transistors to be under reverse bias.Type: ApplicationFiled: September 27, 2016Publication date: July 5, 2018Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Ping-Sheng KUO, Tianhong WANG
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Publication number: 20180096659Abstract: The present invention provides a brightness compensation method, a system and a display panel in a Demura system. The method comprises obtaining an included angle ? between a connection line of a pixel dot and a center point of a camera lens and a horizontal line as a camera is fixed; obtaining a brightness value f(?) corresponding to the ? according to a pre-stored angle-brightness relationship; obtaining a correction brightness value of the pixel dot according to a calculation of the f(?) and a default formula, and performing brightness compensation to the display panel according to the brightness value of the pixel dot after correction. The technical solution provided by the present invention can reduce the influence of the view angle to the brightness and the influence of cos4 ? to the brightness, and thus, it possesses the benefit of the brightness decay offset reduction.Type: ApplicationFiled: January 14, 2016Publication date: April 5, 2018Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.Inventors: Ping-sheng KUO, Liwei ZHU
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Patent number: 9898956Abstract: A method of driving active-matrix organic light-emitting diode (AMOLED) panels includes: (A) dividing a current frame of a current image corresponding to an i-th color component into a plurality of sub-frames, wherein i?[1,N], and N is a total number of the color component; (B) obtaining a sequence of the sub-frames of a previous frame of a previous image corresponding to the i-th color component, wherein the previous frame has been divided into a plurality of sub-frames by the same way with the current frame; (C) determining the sequence of the sub-frames of the current frame in accordance with the sequence of the sub-frames of the previous frame, wherein the sequence of the sub-frames (SF) of the current image is same with or is different from that of the previous frame; and (D) controlling the panel to display in accordance with the sequence of the sub-frames of the current frame determined by corresponding color components.Type: GrantFiled: March 20, 2015Date of Patent: February 20, 2018Assignee: Shenzhen China Star Optoelectronics Technology Co., LtdInventors: Ping-sheng Kuo, Li-wei Chu
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Patent number: 9830874Abstract: The present invention provides an electronic device (100) having smaller number of drive chips and including a timing controller (10), a gate and a source drive chips (20, 30), a pixel cells matrix (60) and a multiplexer (40). The multiplexer (40) includes a plurality of first signal outputs connected to the pixel cells matrix (60). The timing controller (10) might generate enable signals for the multiplexer (40). In this way, the multiplexer (40) could output scan signals to the pixel cells matrix by a corresponding signal end. The number of the drive chips could be reduced by the present invention.Type: GrantFiled: June 27, 2014Date of Patent: November 28, 2017Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTDInventors: Ping-Sheng Kuo, Tai-Jiun Hwang
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Patent number: 9812064Abstract: Disclosed is an organic light-emitting display panel and a method for compensating voltage drop thereof. The organic light-emitting display panel is added with a voltage drop compensation unit, which is connected to a data driving unit, and used for calculating, as per a data voltage output by the data driving unit and inbuilt iterative algorithm, a voltage at a junction between a power wiring and each of a plurality of pixel units. Subsequently, the data voltage output by the data driving unit is compensated based on a voltage difference between the voltage as calculated and a supply voltage.Type: GrantFiled: January 29, 2015Date of Patent: November 7, 2017Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Ping Sheng Kuo
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Patent number: 9779658Abstract: The present disclosure discloses a pixel circuit, a display panel comprising the pixel circuit, and a display device comprising the pixel circuit. The pixel circuit comprises a first transistor, a second transistor, a third transistor, a fourth transistor, and a fifth transistor. The lifetime of the circuit can be prolonged by the pixel circuit with threshold voltage compensation function of the present disclosure. The pixel circuit can not only be used in large sized display device driven through SE mode, but also be used in medium or small sized display device driven through PE mode.Type: GrantFiled: September 19, 2014Date of Patent: October 3, 2017Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Ping Sheng Kuo
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Patent number: 9767723Abstract: A device and a method for processing a waited display picture of an OLED display device are provided. The device includes a block dividing unit for dividing a waited display picture into multiple blocks; an average grayscale determining unit for determining an average grayscale value of each block; a high grayscale determining unit for determining a block having an average grayscale value greater than a preset threshold value as a high grayscale block; an adjacent grayscale determining unit for determining an adjacent grayscale value of each high grayscale block; and a regulation unit for adjusting grayscale values of pixels of each high grayscale block. The present invention adjusts grayscale values using a block as a unit. Besides, the difference of luminous efficiency or light transmittance of different color components is also considered so as to effectively improve the life of the OLED display device.Type: GrantFiled: May 21, 2015Date of Patent: September 19, 2017Assignee: Shenzhen China Star Optoelectronics Technology Co., LtdInventors: Ping-sheng Kuo, Li-wei Chu
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Publication number: 20170261800Abstract: The present invention provides a protective circuit, employed to protect a liquid crystal display, and the liquid crystal display includes a display panel and a level translator providing a clock signal to the display panel through an output line, and the protective circuit includes a first transistor, a detection circuit and a controller coupled to both the first transistor and the detection circuit, and the first transistor is electrically coupled to the detection circuit and the output line, and the clock signal is outputted to the display panel through the first transistor, and the detection circuit detects the clock signal and determines whether the clock signal is normal or not, and as the clock signal is abnormal, the controller controls the level translator to stop outputting the clock signal to the display panel.Type: ApplicationFiled: September 18, 2015Publication date: September 14, 2017Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Xianming ZHANG, Ping-sheng KUO, Ming-wei CHEN
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Publication number: 20170229088Abstract: The present invention discloses a LCD device and a LCD. The LCD device includes: a power supply unit, a gate driver circuit, a source driver circuit and a plurality of data lines and scan lines that interlace mutually, the gate driver circuit includes a plurality of gate driver integrated circuits, the source driver circuit includes a plurality of source driver integrated circuits, the power supply unit is applied to generate a gate high voltage and a gate low voltage; the power supply unit transmits the gate high voltage to a plurality of gate driver integrated circuits by a plurality of first transmission routes, the power supply unit transmits the gate low voltage to a plurality of gate driver integrated circuits by a plurality of second transmission routes, the plurality of gate driver integrated circuits provide scanning signals to the plurality of scan lines in turn.Type: ApplicationFiled: November 23, 2015Publication date: August 10, 2017Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.Inventors: Lei WANG, Ping-sheng KUO, Li ZHOU, Yu-yeh CHEN