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1.发明申请公开(公告)号：US20180308423A1
公开(公告)日：2018-10-25
申请号：US15565500
申请日：2017-05-05
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Chen SONG , Zhongyuan WU
IPC: G09G3/3233
CPC classification number: G09G3/3233 , G09G3/3283 , G09G2310/0272 , G09G2310/0289 , G09G2320/0223 , G09G2320/0233
Abstract: The present disclosure provides conversion circuit and operation method thereof, compensation device, and display apparatus. The conversion circuit includes a conversion unit connected between an output terminal and a first voltage terminal, and an input unit connected with an input terminal and the conversion unit respectively; the input unit is configured to receive current signal from the input terminal and supply the current signal to the conversion unit, and the conversion unit is configured to convert the current signal supplied by the input unit into voltage signal and output the voltage signal from the output terminal; and an equivalent resistance of the conversion unit is configured such that preset voltage corresponding to standard current is output from the output terminal when the standard current is input from the input terminal. With the technical solutions of the present disclosure, drive current for pixel can be accurately converted into voltage signal.
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公开(公告)号：US20180090053A1
公开(公告)日：2018-03-29
申请号：US15705637
申请日：2017-09-15
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Airong LIU , Zhongyuan WU , Chen SONG
IPC: G09G3/20
CPC classification number: G09G3/2092 , G09G3/20 , G09G2300/08 , G09G2310/0243 , G09G2310/027 , G09G2310/0286 , G09G2310/0291 , G09G2330/02 , G11C19/00 , G11C19/28
Abstract: The present disclosure relates to an output buffer, a method for operating the same, a source driver and a display panel. The output buffer includes a matching unit, an input unit and an output unit. The matching unit outputs a first control signal by dynamic element matching technique according to an input signal of the first voltage terminal. The input unit outputs a third control signal based on the first control signal and input signals of the input terminal and the second voltage terminal. The output unit controls an output signal of the output terminal in accordance with the third control signal and input signals of the first signal terminal, the second signal terminal, the third signal terminal, the fourth signal terminal and the second voltage terminal.
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公开(公告)号：US20210359695A1
公开(公告)日：2021-11-18
申请号：US16607832
申请日：2019-04-18
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Tangxiang WANG , Chen SONG
IPC: H03M1/10
Abstract: 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. The weighted summation operational amplifier is configured to perform weighted summation on voltages inputted by the a same-phase input ends at a digital-to-analog conversion stage to acquire an analog voltage, and output the analog voltage via the operational amplification output end.
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4.发明申请公开(公告)号：US20180308428A1
公开(公告)日：2018-10-25
申请号：US15558068
申请日：2017-02-17
Inventor： Lei CHEN , Chen SONG , Airong LIU , Tangxiang WANG , Xuelian CHENG
IPC: G09G3/3258 , H01L51/52 , H01L27/32
Abstract: Disclosed are a circuit and a method for detecting a driving current of an organic light emitting diode display device, and an organic light emitting diode display device, the method includes: after detecting for a predetermined time period, obtaining an output voltage of the integrating circuit, and comparing the output voltage with at least one reference voltage; in the case that the output voltage and the reference voltage satisfy a predetermined condition, adjusting capacitance of a capacitor of the integrating circuit.
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公开(公告)号：US20170103722A1
公开(公告)日：2017-04-13
申请号：US15122372
申请日：2015-08-31
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Chen SONG , Zhongyuan WU , Kun CAO , Hongjun XIE
IPC: G09G3/36
CPC classification number: G09G3/3677 , G09G2310/0286 , G09G2310/08 , G09G2330/021 , G11C19/287
Abstract: The present disclosure provides a shift register unit, a gate driving circuit and a display apparatus. The shift register unit comprises: a first latch module having a first input terminal connected to a first clock signal terminal or a second clock signal terminal, a second input terminal for receiving a pulse signal, and an output terminal; and a second latch module having a first input terminal connected to the first clock signal terminal or the second clock signal terminal, a second input terminal connected to the output terminal of the first latch module, and an output terminal connected to a signal output terminal of the shift register unit. The first input terminal of the first latch module and the first input terminal of the second latch module are connected to the same signal terminal.
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Patent Agency Ranking
公开(公告)号：US20210210006A1
公开(公告)日：2021-07-08
申请号：US16073988
申请日：2018-01-04
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Chen SONG
IPC: G09G3/3208
Abstract: An image display drive device, a display device and an electrical compensation method are disclosed. The image display drive device includes a detection circuit and a data superposition circuit. The detection circuit is configured to obtain an electrical compensation data signal of a display panel; the data superposition circuit is configured to superpose the electrical compensation data signal and the initial driving data signal, so as to obtain a compensated driving data signal.
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7.发明申请公开(公告)号：US20200265760A1
公开(公告)日：2020-08-20
申请号：US16348315
申请日：2018-08-28
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Chen SONG , Tangxiang WANG , Zhan GAO , Song MENG , Dongfang YANG
IPC: G09G3/00 , G09G3/3233
Abstract: 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.
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公开(公告)号：US20180005571A1
公开(公告)日：2018-01-04
申请号：US15543280
申请日：2016-03-29
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Chen SONG
IPC: G09G3/3233
CPC classification number: G09G3/3233 , G09G3/32 , G09G3/3208 , G09G2300/0842 , G09G2310/0251 , G09G2310/0262 , G09G2320/0233 , G09G2320/043 , G09G2320/045 , G09G2360/145
Abstract: An OLED pixel circuit and a display apparatus comprising the OLED pixel circuit. An OLED pixel circuit comprises an OLED and driving units (TFT1, S1, C) for driving the OLED to emit light, wherein one electrode of the OLED is connected to the driving units (TFT1, S1, C). The OLED pixel circuit further comprises compensation units (R1, S2, TFT2, R2). The compensation units (R1, S2, TFT2, R2) comprises a sensing element (R1) which can sense light and convert an optical signal of the OLED into an electrical signal. The compensation units (R1, S2, TFT2, R2) compensate for currents used by the driving units (TFT1, S1, C) to drive the OLED according to the light-emitting brightness of the OLED.
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公开(公告)号：US20200266811A1
公开(公告)日：2020-08-20
申请号：US16643241
申请日：2019-09-05
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Tangxiang WANG , Chen SONG
Abstract: 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.
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10.发明申请公开(公告)号：US20190006868A1
公开(公告)日：2019-01-03
申请号：US15576644
申请日：2017-07-17
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Chen SONG , Airong LIU , Tangxiang WANG , Lei CHEN
CPC classification number: H02J7/0068 , H02J7/345 , H03F3/45475 , H03F2200/129 , H03F2203/45116 , H03F2203/45514 , H03K5/24
Abstract: A method is disclosed for controlling charging/discharging of a capacitor module. The capacitor module includes a plurality of branches connected in parallel, each of which includes a capacitor and a switch connected in series with the capacitor. The method includes measuring a first charge/discharge time for the capacitor module being charged/discharged from an initial voltage to an intermediate voltage, and To adjusting a second charge/discharge time for the capacitor module being further charged/discharged from the intermediate voltage to a target voltage by controlling on/off of at least one of the switches depending on the first charge/discharge time, the intermediate voltage being between the initial voltage and the target voltage. Also disclosed are an apparatus for controlling charging/discharging of a capacitor module and a display apparatus including the apparatus.
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