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1.发明申请公开(公告)号：US20180239379A1
公开(公告)日：2018-08-23
申请号：US15508315
申请日：2016-09-07
发明人： Boya ZHANG , Zhaohui MENG , Chenggeng ZHANG , Lintao ZHANG
IPC分类号： G05F1/46 , G09G3/3225
CPC分类号： G05F1/461 , G05F1/10 , G09G3/3208 , G09G3/3225 , G09G2310/0291 , G09G2320/0204 , G09G2320/0223 , G09G2330/02 , G09G2330/021
摘要： Provided are a power supply voltage control circuit and a method thereof, a driver integrated circuit, and a display device. The power supply voltage control circuit comprises: a voltage detection unit (11) configured to detect a power supply voltage (ELVDD, ELVSS) received by the display panel (72) from a power supply circuit (73); a comparison unit (12) configured to obtain a voltage difference between the power supply voltage (ELVDD, ELVSS) and a reference voltage (VF1,VF2) through comparison; and a power supply voltage control unit (13) configured to transmit a power supply voltage control signal to the power supply circuit (73) according to the voltage difference and the reference voltage (VF1,VF2), so that the power supply circuit (73) outputs a corresponding power supply voltage to the display panel (72), so as to compensate for the voltage drop loss during voltage transmission, optimize display effect of the product, reduce effectively the voltage drop loss from the output terminal of the power supply circuit to the display panel side can be, and ensure consistency of the voltages inputted into the display panel.
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公开(公告)号：US20180308433A1
公开(公告)日：2018-10-25
申请号：US16023677
申请日：2018-06-29
发明人： Chenggeng ZHANG , Boya ZHANG
IPC分类号： G09G3/3283 , H02M1/32 , G09G3/3208 , H02M1/36 , H03K3/012 , H05B33/08
CPC分类号： G09G3/3283 , G09G3/3208 , G09G2300/0426 , G09G2310/08 , G09G2330/028 , G09G2330/04 , H02M1/32 , H02M1/36 , H03K3/012 , H05B33/0809 , H05B33/0896
摘要： The present disclosure discloses an enable signal generation circuit, comprising: an input module configured to input a direct current signal from the first input terminal to a first node; a transmission module configured to transmit the direct current signal at the first node to an output terminal; a first conducting module and a second conducting module configured to conduct signals in an alternating current signal from the second input terminal to the first node; a first filter module configured to filter the signal at the first node such that, at the first node, the alternating current signal from the second input terminal is conducted to a common terminal. The second input terminal is connected to the output terminal. The present disclosure simplifies the circuit structure and solves the problem caused by the difference between timing sequences of inputted signals.
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公开(公告)号：US20170316743A1
公开(公告)日：2017-11-02
申请号：US15520681
申请日：2015-12-23
发明人： Chenggeng ZHANG , Boya ZHANG
IPC分类号： G09G3/3283 , H03K3/012
CPC分类号： G09G3/3283 , G09G3/3208 , G09G2300/0426 , G09G2310/08 , G09G2330/028 , G09G2330/04 , H02M1/32 , H02M1/36 , H03K3/012 , H05B33/0809 , H05B33/0896
摘要： The present disclosure discloses an enable signal generation circuit, comprising: an input module configured to input a direct current signal from the first input terminal to a first node; a transmission module configured to transmit the direct current signal at the first node to an output terminal; a first conducting module and a second conducting module configured to conduct signals in an alternating current signal from the second input terminal to the first node; a first filter module configured to filter the signal at the first node such that, at the first node, the alternating current signal from the second input terminal is conducted to a common terminal. The second input terminal is connected to the output terminal. The present disclosure simplifies the circuit structure and solves the problem caused by the difference between timing sequences of inputted signals.
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公开(公告)号：US20170243534A1
公开(公告)日：2017-08-24
申请号：US15220991
申请日：2016-07-27
发明人： Chenggeng ZHANG , Boya ZHANG
IPC分类号： G09G3/3225
CPC分类号： G09G3/3225 , G09G2310/0289 , G09G2330/02 , G09G2330/028 , H02M3/158 , H02M2001/009
摘要： Provided are a power supply circuit, a driving method for the same, and a display device. The power supply circuit comprises a first control sub-circuit, a second control sub-circuit, a voltage converting sub-circuit, a first output sub-circuit, and a second output sub-circuit; the first control sub-circuit controls the first voltage level terminal to be connected to the first node, the second control sub-circuit controls the second voltage level terminal to be connected to the second node, the voltage converting sub-circuit adjusts the voltage at the first node and the voltage at the second node, the first output sub-circuit outputs the voltage at the first node to the first output terminal, the second output sub-circuit outputs the voltage at the second node to the second output terminal. Structure of the power supply circuit can be simplified, and thereby manufacturing cost of the power supply circuit can be reduced.
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公开(公告)号：US20170278454A1
公开(公告)日：2017-09-28
申请号：US15511204
申请日：2016-03-07
发明人： Boya ZHANG , Chenggeng ZHANG
IPC分类号： G09G3/3208 , H05B37/02 , G01R19/00 , H02M3/156 , H05B33/08
CPC分类号： G09G3/3208 , G01R19/0092 , G09G3/32 , G09G2330/028 , H02M3/156 , H05B33/0815 , H05B33/0896 , H05B37/02
摘要： Embodiments of the disclosure provide a power supply circuit for powering an OLED panel and a display panel, for mitigating or solving the problem of a relatively high power consumption and a decreased efficiency with the DC-DC conversion circuit when the current outputted by the DC-DC conversion circuit to the OLED panel is relatively small due to the fact that the voltage outputted by the DC-DC conversion circuit is a constant value while the current outputted by the DC-DC conversion circuit to the OLED panel may vary with the load. The power supply circuit for powering the OLED panel reduces the voltage outputted by the DC-DC conversion circuit in the power supply circuit based on a target current. Moreover, the maximum value of the current that can be outputted by the DC-DC conversion circuit when outputting the reduced voltage is is not less than the target current. The target current may be a current outputted by the DC-DC conversion circuit to the OLED panel at a time before a K-th preset duration counting from the latest preset duration for receiving the preset pulse signal.
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公开(公告)号：US20160379554A1
公开(公告)日：2016-12-29
申请号：US15141328
申请日：2016-04-28
发明人： Chenggeng ZHANG , Boya ZHANG
IPC分类号： G09G3/3208
CPC分类号： G09G3/3208 , G09G2320/029 , G09G2320/0626 , G09G2330/028
摘要： The present invention provides a power supply circuit and an OLED display device, belongs to the field of OLED display technology, and can solve the problem that existing power supply circuits have low efficiency when brightness of the OLED display panel is low. The power supply circuit is used for proving an anode voltage and a cathode voltage for an OLED display panel, a difference between the anode voltage and the cathode voltage being a driving voltage, and the power supply circuit includes: a current detection unit for generating a control signal according to a driving current of the OLED display panel; and a driving voltage unit for generating, according to the control signal, a driving voltage positively correlated with the driving current, and including an anode voltage unit for generating an anode voltage and a cathode voltage unit for generating a cathode voltage.
摘要翻译： 本发明提供了一种属于OLED显示技术领域的电源电路和OLED显示装置，可以解决当OLED显示面板的亮度低时现有电源电路效率低的问题。 电源电路用于证明OLED显示面板的阳极电压和阴极电压，阳极电压和阴极电压之间的差为驱动电压，电源电路包括：电流检测单元，用于产生 控制信号根据OLED显示面板的驱动电流; 以及驱动电压单元，用于根据控制信号产生与驱动电流正相关的驱动电压，并且包括用于产生阳极电压的阳极电压单元和用于产生阴极电压的阴极电压单元。
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