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公开(公告)号：US10551903B2
公开(公告)日：2020-02-04
申请号：US15817851
申请日：2017-11-20
发明人： Taehyeong An , Suhyeong Park , Soowan Yoon
IPC分类号： G06F1/00 , G06F1/3234
摘要： A display apparatus includes a display panel and a power supply. The display panel displays an image at a first driving frequency in a normal mode and displays an image at a second driving frequency in a low power mode. The second driving frequency is lower than the first driving frequency. The power supply outputs a first initialization voltage at a first level to the display panel during an active period of the low power mode. The power supply outputs a second initialization voltage at a second level to the display panel during at least a portion of a blank period of the low power mode. The second level is higher than the first level.
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公开(公告)号：US10373575B2
公开(公告)日：2019-08-06
申请号：US14755241
申请日：2015-06-30
发明人： Suhyeong Park , Kyoungwon Lee , Hoyong Jung , Cheolwoo Park , Bonghyun You
IPC分类号： G09G3/36
摘要： A display apparatus includes: a timing control block which outputs image data based on external image data and control signals, and generates data and gate-side control signals based on the external control signal; a source drive block which converts the image data into a data voltage based on the data control signal; a low frequency detection block which detects a low power drive period based on the external control signal and generates a power control signal, a state of which is determined based on a result of the detection; an integrated chip which receives first and second drive voltages and includes a first switch block that turns off a circuit of the source drive block based on the power control signal during the low power drive period; a gate drive circuit which generates a gate signal based on a gate control signal from the integrated chip; and a display panel.
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公开(公告)号：US20180074569A1
公开(公告)日：2018-03-15
申请号：US15817851
申请日：2017-11-20
发明人： Taehyeong An , Suhyeong Park , Soowan Yoon
IPC分类号： G06F1/32
CPC分类号： G06F1/3265 , G09G3/3233 , G09G2300/0861 , G09G2310/0262 , G09G2330/021 , G09G2340/0435 , Y02D10/153 , Y02D50/20
摘要： A display apparatus includes a display panel and a power supply. The display panel displays an image at a first driving frequency in a normal mode and displays an image at a second driving frequency in a low power mode. The second driving frequency is lower than the first driving frequency. The power supply outputs a first initialization voltage at a first level to the display panel during an active period of the low power mode. The power supply outputs a second initialization voltage at a second level to the display panel during at least a portion of a blank period of the low power mode. The second level is higher than the first level.
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公开(公告)号：US09823729B2
公开(公告)日：2017-11-21
申请号：US14831065
申请日：2015-08-20
发明人： Taehyeong An , Suhyeong Park , Soowan Yoon
CPC分类号： G06F1/3265 , G09G3/3233 , G09G2300/0861 , G09G2310/0262 , G09G2330/021 , G09G2340/0435 , Y02D10/153 , Y02D50/20
摘要： A display apparatus includes a display panel and a power supply. The display panel displays an image at a first driving frequency in a normal mode and displays an image at a second driving frequency in a low power mode. The second driving frequency is lower than the first driving frequency. The power supply outputs a first initialization voltage at a first level to the display panel during an active period of the low power mode. The power supply outputs a second initialization voltage at a second level to the display panel during at least a portion of a blank period of the low power mode. The second level is higher than the first level.
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公开(公告)号：US09892705B2
公开(公告)日：2018-02-13
申请号：US14687136
申请日：2015-04-15
发明人： Suhyeong Park , Hoyong Jung
IPC分类号： G09G3/36
CPC分类号： G09G3/3688 , G09G3/3648 , G09G3/3696 , G09G2310/0243 , G09G2310/027 , G09G2310/0291 , G09G2310/0297 , G09G2340/16
摘要： A data driver includes buffers, bias circuits, and a bias signal generator. The buffers respectively output data voltages corresponding to pixel image data. The bias circuits generate bias currents independent of each other and apply the bias currents to respective ones of the buffers. The bias signal generator generates a plurality of bias signals. Each of the bias circuits include a selector and a bias current generator. The selector selects one bias signal among the bias signals based on corresponding pixel image data and outputs the selected bias signal as a final bias signal. The bias current generator generates a corresponding bias current among the bias currents based on the final bias signal.
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公开(公告)号：US09697787B2
公开(公告)日：2017-07-04
申请号：US14323554
申请日：2014-07-03
发明人： Suhyeong Park , Jimyoung Seo , KyoungWon Lee
IPC分类号： G09G3/36
CPC分类号： G09G3/3648 , G09G3/3614 , G09G2300/0426 , G09G2300/0876 , G09G2310/0205
摘要： A display device is provided. The display device includes a display panel, a gate driver, and a data driver. The display panel includes a plurality of pixels connected to a plurality of gate lines for receiving gate signals, a plurality of data lines for receiving data voltages, and a storage line for receiving a storage voltage. The gate driver is configured to generate the gate signals. The data driver is configured to operate individually in first and second frequency periods to generate the data voltages. The data voltages include a positive data voltage and a negative data voltage, and polarities of the data voltages are inverted every two data lines during the first frequency period and inverted every data line during the second frequency period.
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7.发明授权Data driver and driving method with control of bias current based on pixel image data 有权基于像素图像数据控制偏置电流的数据驱动器和驱动方法公开(公告)号：US09589532B2
公开(公告)日：2017-03-07
申请号：US14688752
申请日：2015-04-16
发明人： Suhyeong Park , Hoyong Jung
CPC分类号： G09G5/006 , G09G3/20 , G09G3/3685 , G09G2310/027 , G09G2310/0289 , G09G2310/0291 , G09G2310/0297 , G09G2330/021
摘要： A data driver includes buffers respectively outputting data voltages corresponding to pixel image data, bias units corresponding to the buffers in a one-to-one correspondence and driving the buffers, respectively, and a global setting part applying control level values to the bias units. Each of the bias units includes a bias signal generating unit that selects one control level value among the control level values based on a corresponding pixel image data among the pixel image data and generates a bias signal having a control level corresponding to the selected control level value and a current generating unit that generates a corresponding bias current in response to the bias signal and applies the corresponding bias current to a corresponding buffer among the buffers.
摘要翻译： 数据驱动器包括分别输出与像素图像数据相对应的数据电压的缓冲器，对应于缓冲器的一对一对应的偏移单元和驱动缓冲器，以及将偏置单元施加控制电平值的全局设置部分。 每个偏置单元包括偏置信号生成单元，其基于像素图像数据中的相应像素图像数据来选择控制电平值中的一个控制电平值，并且生成具有与所选择的控制电平值对应的控制电平的偏置信号 以及电流产生单元，其响应于偏置信号产生相应的偏置电流，并将相应的偏置电流施加到缓冲器中的对应的缓冲器。
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公开(公告)号：US10204547B2
公开(公告)日：2019-02-12
申请号：US15098788
申请日：2016-04-14
发明人： Suhyeong Park
IPC分类号： G09G3/36 , G09G3/20 , G09G3/3275
摘要： A display device includes a buffer connected to a data line of a display panel, a bias-mode verification unit which generates a bias-mode signal based on an nth image data signal and an mth image data signal (“m” is a natural number smaller than “n”) corresponding to the data line, a data selecting unit which selects one of a plurality of bias enable signals having different duty ratios from one another based on the bias-mode signal, a control signal generating unit which generates a switching control signal based on the bias enable signal selected by the data selecting unit, and a bias control unit which applies, to the buffer, at least one of a plurality of bias control signals having different levels from one another in an output period defined by the switching control signal.
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公开(公告)号：US20150145843A1
公开(公告)日：2015-05-28
申请号：US14280529
申请日：2014-05-16
发明人： Suhyeong Park , Unggyu Min , Young-Soo Yoon , Sangik Lee
IPC分类号： G09G3/20
CPC分类号： G09G3/20 , G09G3/3614 , G09G3/3688 , G09G2310/0254 , G09G2310/0275 , G09G2310/0281 , G09G2310/0297 , G09G2320/0223 , G09G2330/08
摘要： A display apparatus includes: a plurality of pixels coupled to gate lines and to data lines configured to cross the gate lines, a gate driver configured to apply gate signals to the gate lines, a first data driver configured to apply first data voltages to first signal lines, a first DEMUX part configured to selectively couple the first signal lines to the data lines, a second data driver configured to apply second data voltages to second signal lines positioned to correspond to the first signal lines, and a second DEMUX part positioned to face the first DEMUX part such that the pixels are positioned between the first and second DEMUX parts, the second DEMUX part configured to couple the second signal lines to the data lines, which are not coupled to the first signal lines. Each of the first data voltages has a polarity opposite to a polarity of a corresponding second data voltage of the second data voltages.
摘要翻译： 显示装置包括：耦合到栅极线和配置成跨越栅极线的数据线的多个像素，被配置为向栅极线施加栅极信号的栅极驱动器，被配置为将第一数据电压施加到第一信号的第一数据驱动器 线路，被配置为选择性地将第一信号线耦合到数据线的第一DEMUX部分，被配置为将第二数据电压施加到与第一信号线对应的第二信号线的第二数据驱动器，以及定位成面对的第二DEMUX部分 第一DEMUX部分，使得像素位于第一和第二DEMUX部分之间，第二DEMUX部分被配置为将第二信号线耦合到未耦合到第一信号线的数据线。 每个第一数据电压具有与第二数据电压的对应的第二数据电压的极性相反的极性。
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公开(公告)号：US20150070344A1
公开(公告)日：2015-03-12
申请号：US14323554
申请日：2014-07-03
发明人： Suhyeong Park , Jimyoung Seo , KyoungWon Lee
IPC分类号： G09G3/36
CPC分类号： G09G3/3648 , G09G3/3614 , G09G2300/0426 , G09G2300/0876 , G09G2310/0205
摘要： A display device is provided. The display device includes a display panel, a gate driver, and a data driver. The display panel includes a plurality of pixels connected to a plurality of gate lines for receiving gate signals, a plurality of data lines for receiving data voltages, and a storage line for receiving a storage voltage. The gate driver is configured to generate the gate signals. The data driver is configured to operate individually in first and second frequency periods to generate the data voltages. The data voltages include a positive data voltage and a negative data voltage, and polarities of the data voltages are inverted every two data lines during the first frequency period and inverted every data line during the second frequency period.
摘要翻译： 提供显示装置。 显示装置包括显示面板，栅极驱动器和数据驱动器。 显示面板包括连接到用于接收栅极信号的多条栅极线的多个像素，用于接收数据电压的多条数据线以及用于接收存储电压的存储线。 栅极驱动器被配置为产生栅极信号。 数据驱动器被配置为在第一和第二频率周期中单独操作以产生数据电压。 数据电压包括正数据电压和负数据电压，并且数据电压的极性在第一频率周期内每两条数据线反转，并且在第二频率周期期间每数据线反转。
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