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公开(公告)号：US09711100B2
公开(公告)日：2017-07-18
申请号：US14609921
申请日：2015-01-30
发明人： Hyong-Do Choi , Yun-Nam Kim
CPC分类号： G09G3/3614 , G09G3/3655 , G09G2330/025
摘要： A common voltage distortion detecting circuit includes a current sensor, a voltage difference voltage detecting circuit and a comparator. The current sensor is disposed between a circuit configured to apply a common voltage to a liquid crystal display panel and an input power terminal providing a power voltage. The voltage difference detecting circuit is configured to detect a difference voltage between two terminals of the current sensor. The comparator is configured to compare the difference voltage and a reference voltage to output an over current signal to convert an inversion method of the liquid crystal display panel when the difference voltage is greater than the reference voltage.
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公开(公告)号：US09741298B2
公开(公告)日：2017-08-22
申请号：US14734291
申请日：2015-06-09
发明人： Kwang-Hyun Baek , Hyun-Seop Song , Hyong-Do Choi , Joo-Suk Lee
IPC分类号： G09G3/36
CPC分类号： G09G3/3614 , G09G3/3655 , G09G2320/0247
摘要： A display apparatus includes a display panel which displays an image, a timing controller which determines an inversion driving method of the display panel based on a waveform of a fed back common voltage from the display panel, and a data driver which outputs a data voltage to the display panel according to the inversion driving method.
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公开(公告)号：US10121444B2
公开(公告)日：2018-11-06
申请号：US15082650
申请日：2016-03-28
发明人： Hyong-Do Choi , Yun-Nam Kim
IPC分类号： G09G3/36
摘要： A display panel driving apparatus includes a grayscale voltage outputting part which generates a first positive polarity grayscale voltage and a first polarity negative grayscale voltage, compares the first positive polarity with a first reference voltage to output a first comparison voltage, compares the first negative polarity grayscale voltage with a second reference voltage to output a second comparison voltage, compares the first comparison voltage with the second comparison voltage to output a voltage deviation value, and outputs a second positive polarity grayscale voltage and a second negative polarity grayscale voltage based on the voltage deviation value, and a data driving part which outputs a data signal based on image data to a data line of a display panel, using the second positive polarity grayscale voltage and the second negative polarity grayscale voltage.
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4.发明授权Voltage generating circuit having a discharge part and display apparatus having the voltage generating circuit 有权具有放电部分的电压产生电路和具有电压发生电路的显示装置公开(公告)号：US09384706B2
公开(公告)日：2016-07-05
申请号：US14258925
申请日：2014-04-22
发明人： Hyong-Do Choi , Yun-Nam Kim , Sang-Young Lee
CPC分类号： G09G3/3696 , G09G3/3611 , G09G2310/0291
摘要： A voltage generating circuit includes a voltage dividing part connected between a main voltage source and a ground configured to divide a main voltage into a plurality of driving voltages and output the plurality of driving voltages, a delay part connected between a driving voltage source and the ground, and configured to delay a driving voltage by a predetermined period and apply the driving voltage to an input terminal of a driver circuit, and a discharge part connected between the voltage dividing part and the delay part, and configured to discharge a voltage charged in the delay part to a ground when the driving voltage is blocked. The discharge part comprises an amplifier, an inverting input of the amplifier being connected to the driving voltage source and a non-inverting input of the amplifier being connected to an output terminal of the delay part.
摘要翻译： 电压产生电路包括连接在主电压源和被配置为将主电压分成多个驱动电压并输出多个驱动电压的接地的分压部分，连接在驱动电压源和地之间的延迟部分 并配置为将驱动电压延迟预定的周期，并将驱动电压施加到驱动电路的输入端，以及连接在分压部和延迟部之间的放电部， 当驱动电压被阻塞时将部分延迟到地。 放电部分包括放大器，放大器的反相输入端连接到驱动电压源，放大器的非反相输入端连接到延迟部分的输出端。
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