Patents by Inventor Tangxiang Wang
Tangxiang Wang 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: 11961470Abstract: A sensing circuit and a correction method thereof, a pixel driving module and a sensing method thereof, and a display apparatus, the sensing circuit includes: an operation amplifier (AMP), an integration capacitor (Cfb), a first switch (S1), a second switch (S2), a third switch (S3), a fourth switch (S4), a fifth switch (S5) and a sixth switch (S6).Type: GrantFiled: June 3, 2021Date of Patent: April 16, 2024Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Fei Yang, Tangxiang Wang
-
Patent number: 11804184Abstract: A source driver includes a plurality of shift register groups cascaded in sequence, an enable control circuit and at least one switching circuit electrically connected to the enable control circuit. Each shift register group includes a plurality of stages of shift registers, and is configured to sample digitized image data; a first start signal of an n-th shift register group is output by an (n?1)-th shift register group, n is a positive integer greater than 2. The enable control circuit is configured to output a first turn-on signal or a first turn-off signal. In two adjacent shift register groups, a last-stage shift register in a present shift register group is electrically connected to a first-stage shift register in a next shift register group through a switching circuit.Type: GrantFiled: November 30, 2020Date of Patent: October 31, 2023Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Tangxiang Wang, Fei Yang
-
Patent number: 11694624Abstract: A pixel compensation device includes a controller and at least one external compensation circuit. In the external compensation circuit, a first input circuit is configured to transmit a first voltage to a first terminal of a driving sub-circuit in a initialization phase, perform blanking in a pre-storage phase, and transmit a threshold compensation voltage to the first terminal in the data compensation writing phase; a second input circuit is configured to transmit a second voltage to a control terminal of the driving sub-circuit in the initialization phase and the pre-storage phase, so that a voltage of the first terminal changes from the first voltage to the threshold compensation voltage in the pre-storage phase; a sensing circuit is configured to sense the threshold compensation voltage in the data compensation writing phase; and the controller is configured to transmit a data voltage to the control terminal in the data compensation writing phase.Type: GrantFiled: June 2, 2021Date of Patent: July 4, 2023Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Tangxiang Wang, Fei Yang, Yu Wang
-
Publication number: 20230158769Abstract: The present disclosure relates to the technical field of display, and provides a bearing substrate, a binding assembly, and a binding method thereof. The bearing substrate may be bound to an integrated substrate. A thermal expansion coefficient of the bearing substrate is greater than a thermal expansion coefficient of the integrated substrate. The integrated substrate includes a plurality of second binding terminals distributed at equal intervals in a same direction. The bearing substrate includes a plurality of first binding terminal sets distributed at equal intervals in a first direction, and each of the first binding terminal sets includes a plurality of first binding terminals distributed at equal intervals in the first direction for binding with the plurality of the second binding terminals one-to-one.Type: ApplicationFiled: January 25, 2021Publication date: May 25, 2023Inventors: Zhan GAO, Xing ZHANG, Pan XU, Wei LIU, Ying HAN, Guoying WANG, Yicheng LIN, Tangxiang WANG
-
Publication number: 20230042060Abstract: A pixel compensation device includes a controller and at least one external compensation circuit. In the external compensation circuit, a first input circuit is configured to transmit a first voltage to a first terminal of a driving sub-circuit in a initialization phase, perform blanking in a pre-storage phase, and transmit a threshold compensation voltage to the first terminal in the data compensation writing phase; a second input circuit is configured to transmit a second voltage to a control terminal of the driving sub-circuit in the initialization phase and the pre-storage phase, so that a voltage of the first terminal changes from the first voltage to the threshold compensation voltage in the pre-storage phase; a sensing circuit is configured to sense the threshold compensation voltage in the data compensation writing phase; and the controller is configured to transmit a data voltage to the control terminal in the data compensation writing phase.Type: ApplicationFiled: June 2, 2021Publication date: February 9, 2023Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Tangxiang WANG, Fei YANG, Yu WANG
-
Publication number: 20230005422Abstract: A sensing circuit and a correction method thereof, a pixel driving module and a sensing method thereof, and a display apparatus, the sensing circuit includes: an operation amplifier (AMP), an integration capacitor (Cfb), a first switch (S1), a second switch (S2), a third switch (S3), a fourth switch (S4), a fifth switch (S5) and a sixth switch (S6).Type: ApplicationFiled: June 3, 2021Publication date: January 5, 2023Inventors: Fei YANG, Tangxiang WANG
-
Publication number: 20220223111Abstract: A source driver includes a plurality of shift register groups cascaded in sequence, an enable control circuit and at least one switching circuit electrically connected to the enable control circuit. Each shift register group includes a plurality of stages of shift registers, and is configured to sample digitized image data; a first start signal of an n-th shift register group is output by an (n?1)-th shift register group, n is a positive integer greater than 2. The enable control circuit is configured to output a first turn-on signal or a first turn-off signal. In two adjacent shift register groups, a last-stage shift register in a present shift register group is electrically connected to a first-stage shift register in a next shift register group through a switching circuit.Type: ApplicationFiled: November 30, 2020Publication date: July 14, 2022Inventors: Tangxiang WANG, Fei YANG
-
Patent number: 11323127Abstract: A digital-to-analog conversion circuit, a digital-to-analog conversion method, and a display device are provided. The digital-to-analog conversion circuit includes a first digital-to-analog conversion sub-circuit and a second digital-to-analog conversion sub-circuit. The second digital-to-analog conversion sub-circuit includes least-significant-bit voltage selection modules whose quantity is a, a weighed summation operational amplifier, switching control modules whose quantity is a and energy storage modules whose quantity is a. The weighted summation operational amplifier includes a reverse-phase input end, an operational amplification output end, and same-phase input ends whose quantity is a. The reverse-phase input end is connected to the operational amplification output end, and a is an integer greater than 1.Type: GrantFiled: April 18, 2019Date of Patent: May 3, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Tangxiang Wang, Chen Song
-
Patent number: 11296718Abstract: Digital-to-analog conversion circuit, digital-to-analog conversion method, display apparatus are disclosed.Type: GrantFiled: December 16, 2019Date of Patent: April 5, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Tangxiang Wang, Chen Song
-
Patent number: 11289025Abstract: A pixel compensation circuit includes: an integration circuit, a comparison circuit, a timing circuit, and a processor, wherein the integration circuit is configured to integrate driving currents of a pixel circuit, and then output a first voltage; the comparison circuit is configured to receive the first voltage, compare the first voltage with a first reference voltage, and then output a first logic control signal; the timing circuit is configured to acquire a first working duration; and the processor is configured to acquire the first working duration, obtain, according to correlations between the pre-obtained working duration and the pixel driving currents, a target driving current, corresponding to the first working duration, of the pixel circuit, and obtain a compensation parameter according to the target driving current.Type: GrantFiled: May 26, 2020Date of Patent: March 29, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Tangxiang Wang, Yi Chen, Zhan Gao
-
Publication number: 20210359695Abstract: A digital-to-analog conversion circuit, a digital-to-analog conversion method, and a display device are provided. The digital-to-analog conversion circuit includes a first digital-to-analog conversion sub-circuit and a second digital-to-analog conversion sub-circuit. The second digital-to-analog conversion sub-circuit includes least-significant-bit voltage selection modules whose quantity is a, a weighed summation operational amplifier, switching control modules whose quantity is a and energy storage modules whose quantity is a. The weighted summation operational amplifier includes a reverse-phase input end, an operational amplification output end, and same-phase input ends whose quantity is a. The reverse-phase input end is connected to the operational amplification output end, and a is an integer greater than 1.Type: ApplicationFiled: April 18, 2019Publication date: November 18, 2021Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Tangxiang WANG, Chen SONG
-
Publication number: 20210264858Abstract: Disclosed are a pixel compensation circuit, a display apparatus, and a pixel compensation circuit driving method. The pixel compensation circuit comprises: an integration circuit, a comparison circuit, a timing circuit, and a processor, wherein the integration circuit is configured to integrate driving currents of a pixel circuit, and then output a first voltage; the comparison circuit is configured to receive the first voltage, compare the first voltage with a first reference voltage, and then output a first logic control signal; the timing circuit is configured to acquire a first working duration; and the processor is configured to acquire the first working duration, obtain, according to correlations between the pre-obtained working duration and the pixel driving currents, a target driving current, corresponding to the first working duration, of the pixel circuit, and obtain a compensation parameter according to the target driving current.Type: ApplicationFiled: May 26, 2020Publication date: August 26, 2021Inventors: Tangxiang WANG, Yi CHEN, Zhan GAO
-
Patent number: 11025266Abstract: Embodiments of the present disclosure provide a digital-to-analog converter, a conversion circuit and a display device. An M-bit digital-to-analog converter includes a higher M?N-bit digital-to-analog conversion circuit, a voltage conversion circuit, an output circuit. The higher M?N-bit digital-to-analog conversion circuit includes: a higher M?N-bit voltage division generation circuit, a first voltage selection circuit. The first voltage selection circuit selects a first voltage from the higher M?N-bit voltage division generation circuit based on a higher M?N-bit digital signal, to be output from a first voltage end. The voltage conversion circuit charges a capacitor circuit under the control of a first switch circuit and a second switch circuit, and discharges a second voltage to a second voltage end through the capacitor circuit.Type: GrantFiled: March 18, 2019Date of Patent: June 1, 2021Assignee: BOE Technology Group Co., Ltd.Inventors: Tangxiang Wang, Chen Song, Zhan Gao, Yi Chen
-
Publication number: 20210159909Abstract: Digital-to-analog conversion circuit, digital-to-analog conversion method, display apparatus are disclosed.Type: ApplicationFiled: December 16, 2019Publication date: May 27, 2021Inventors: Tangxiang WANG, Chen SONG
-
Patent number: 11005428Abstract: The present disclosure relates to a differential input circuit, an amplifier circuit, and a display device. The differential input circuit comprises: a first power module, a second power module, a first shunt module, a second shunt module, a first output module, and a second output module. The first power module is controlled to output a first signal, a second signal, and a third signal through a first bias signal, and the second power module receives the first signal, and outputs a fourth signal and a fifth signal through a differential input signal. The first shunt module, the second shunt module, the first output module, and the second output module are controlled by the differential input signal so that the first output module and the second output module output signals under the control of the differential input signal.Type: GrantFiled: November 12, 2019Date of Patent: May 11, 2021Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Tangxiang Wang
-
Patent number: 10943536Abstract: Provided are an external compensation circuit and method, and display device in the field of display techniques. The external compensation circuit includes a regulation sub-circuit that may collect a driving current loaded to a light-emitting unit and a reference current from a reference current source, and regulate potentials at two nodes connected to a compensation sub-circuit according to the collected current, to enable the compensation sub-circuit to calibrate a data signal to be input to a pixel circuit according to a potential difference between the two nodes.Type: GrantFiled: June 14, 2019Date of Patent: March 9, 2021Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Tangxiang Wang, Chen Song
-
Patent number: 10924099Abstract: Embodiments of the present disclosure provide a comparator. The comparator includes a first current source circuit, a pre-amplifier circuit, an amplifier circuit, a comparison circuit, and an output circuit. The first current source circuit is configured to provide a first constant current to the pre-amplifier circuit. The pre-amplifier circuit is configured to amplify a first input signal into a first pre-amplified signal and amplify a second input signal into a second pre-amplified signal based on a first constant current. The amplifier circuit includes a current mirror and a load circuit. The load circuit comprises a differential diode-connected transistor. The comparison circuit is configured to compare the first amplified signal with the second amplified signal. The output circuit is configured to output a first voltage or a second voltage based on a result of the comparison.Type: GrantFiled: September 5, 2019Date of Patent: February 16, 2021Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Tangxiang Wang, Chen Song
-
Patent number: 10916164Abstract: The present disclosure discloses a sampling method, a sampling control method, a sampling device, a sampling control device, a sampling control system, and a display device. The present disclosure provides a sampling method for sampling pixel units disposed on a display substrate, the method including: the controller controlling a plurality of sampling modules to be simultaneously turned on, so that a plurality of sampling modules controlled by the controller are capable of receiving luminance information of the pixel units obtained through sampling of the sampling channel; the controller sequentially controlling a group of sampling channels to be simultaneously turned on, so that the group of sampling channels simultaneously sample the luminance information, and transmit the sampled luminance information to respective sampling modules connected to the group of sampling channels through the output terminals of the group of sampling channels.Type: GrantFiled: August 28, 2018Date of Patent: February 9, 2021Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Chen Song, Tangxiang Wang, Zhan Gao, Song Meng, Dongfang Yang
-
Publication number: 20210013899Abstract: Embodiments of the present disclosure provide a digital-to-analog converter, a conversion circuit and a display device. An M-bit digital-to-analog converter includes a higher M?N-bit digital-to-analog conversion circuit, a voltage conversion circuit, an output circuit. The higher M?N-bit digital-to-analog conversion circuit includes: a higher M?N-bit voltage division generation circuit, a first voltage selection circuit. The first voltage selection circuit selects a first voltage from the higher M?N-bit voltage division generation circuit based on a higher M?N-bit digital signal, to be output from a first voltage end. The voltage conversion circuit charges a capacitor circuit under the control of a first switch circuit and a second switch circuit, and discharges a second voltage to a second voltage end through the capacitor circuit.Type: ApplicationFiled: March 18, 2019Publication date: January 14, 2021Inventors: Tangxiang WANG, Chen SONG, Zhan GAO, Yi CHEN
-
Publication number: 20200395897Abstract: The present disclosure relates to a differential input circuit, an amplifier circuit, and a display device. The differential input circuit comprises: a first power module, a second power module, a first shunt module, a second shunt module, a first output module, and a second output module. The first power module is controlled to output a first signal, a second signal, and a third signal through a first bias signal, and the second power module receives the first signal, and outputs a fourth signal and a fifth signal through a differential input signal. The first shunt module, the second shunt module, the first output module, and the second output module are controlled by the differential input signal so that the first output module and the second output module output signals under the control of the differential input signal.Type: ApplicationFiled: November 12, 2019Publication date: December 17, 2020Inventor: Tangxiang WANG