公开(公告)号：US20100295522A1

公开(公告)日：2010-11-25

申请号：US12759942

申请日：2010-04-14

申请人： Chang-Ju Lee ,  Hyoung-Rae Kim ,  San-Ho Byun

发明人： Chang-Ju Lee ,  Hyoung-Rae Kim ,  San-Ho Byun

IPC分类号： G05F1/10

CPC分类号： G05F1/46 ,  H03F1/303 ,  H03F3/45475 ,  H03F2203/45528 ,  H03F2203/45534

摘要： A semiconductor device includes a voltage regulator. The device includes an operational amplifier configured to compare an input voltage with a feedback voltage and output an output voltage, an up-resistor connected between an output of the operational amplifier and a first node, a down-resistor connected between a second node and a ground voltage terminal, and a switching unit including a fuse box connected between a third node outputting the feedback voltage and a fourth node having a variable resistance value, and configured to connect the first node with the fourth node and the second node with the third node, or connect the first node with the third node and the second node with the fourth node.

摘要翻译： 半导体器件包括电压调节器。 该装置包括：运算放大器，被配置为将输入电压与反馈电压进行比较并输出输出电压;连接在运算放大器的输出端与第一节点之间的上拉电阻，连接在第二节点和第二节点之间的下拉电阻; 接地电压端子和包括连接在输出反馈电压的第三节点和具有可变电阻值的第四节点之间的保险丝盒的开关单元，并且被配置为将第一节点与第四节点和第二节点与第三节点 ，或者将第一节点与第三节点和第二节点连接到第四节点。

公开(公告)号：US08289073B2

公开(公告)日：2012-10-16

申请号：US12759942

申请日：2010-04-14

申请人： Chang-Ju Lee ,  Hyoung-Rae Kim ,  San-Ho Byun

发明人： Chang-Ju Lee ,  Hyoung-Rae Kim ,  San-Ho Byun

IPC分类号： G05F1/10 ,  G05F3/02

CPC分类号： G05F1/46 ,  H03F1/303 ,  H03F3/45475 ,  H03F2203/45528 ,  H03F2203/45534

摘要： A semiconductor device includes a voltage regulator. The device includes an operational amplifier configured to compare an input voltage with a feedback voltage and output an output voltage, an up-resistor connected between an output of the operational amplifier and a first node, a down-resistor connected between a second node and a ground voltage terminal, and a switching unit including a fuse box connected between a third node outputting the feedback voltage and a fourth node having a variable resistance value, and configured to connect the first node with the fourth node and the second node with the third node, or connect the first node with the third node and the second node with the fourth node.

摘要翻译： 半导体器件包括电压调节器。 该装置包括：运算放大器，被配置为将输入电压与反馈电压进行比较并输出输出电压;连接在运算放大器的输出端与第一节点之间的上拉电阻，连接在第二节点和第二节点之间的下拉电阻; 接地电压端子和包括连接在输出反馈电压的第三节点和具有可变电阻值的第四节点之间的保险丝盒的开关单元，并且被配置为将第一节点与第四节点和第二节点与第三节点 ，或者将第一节点与第三节点和第二节点连接到第四节点。

公开(公告)号：US08305371B2

公开(公告)日：2012-11-06

申请号：US11973473

申请日：2007-10-09

申请人： Hyoung-Rae Kim

发明人： Hyoung-Rae Kim

IPC分类号： G06F3/038 ,  G09G5/00

CPC分类号： G09G3/3655 ,  G09G2320/0247

摘要： An apparatus for generating a VCOM voltage in a display device includes first and second buffer amplifiers and a charge pump. The first buffer amplifier is biased with high and low rail voltages for generating the VCOM voltage. The second buffer amplifier generates the high rail voltage at an output node not connected to an external capacitor. The charge pump generates the low rail voltage by charge pumping directly from an external power supply voltage. Alternatively, a charge pump and a comparator are used for generating the VCOM voltage at an output of the charge pump. The comparator generates a charge pump control signal from comparing the VCOM voltage with a reference voltage.

摘要翻译： 用于在显示装置中产生VCOM电压的装置包括第一和第二缓冲放大器和电荷泵。 第一缓冲放大器被偏置用于产生VCOM电压的高和低轨电压。 第二缓冲放大器在不连接到外部电容器的输出节点处产生高电压电压。 电荷泵通过从外部电源电压直接进行充电来产生低轨电压。 或者，电荷泵和比较器用于在电荷泵的输出处产生VCOM电压。 比较器通过将VCOM电压与参考电压进行比较来产生电荷泵控制信号。

公开(公告)号：US20100156867A1

公开(公告)日：2010-06-24

申请号：US12639117

申请日：2009-12-16

申请人： Hyoung-Rae Kim ,  Yong-Joon Jeon ,  Gyu-Hyeong Cho ,  Sung-Woo Lee ,  Hyung-Min Lee ,  Yoon-Kyung Choi

发明人： Hyoung-Rae Kim ,  Yong-Joon Jeon ,  Gyu-Hyeong Cho ,  Sung-Woo Lee ,  Hyung-Min Lee ,  Yoon-Kyung Choi

IPC分类号： G09G5/00 ,  H03M1/66

CPC分类号： H03M1/0682 ,  G09G3/3648 ,  G09G3/3688 ,  G09G2310/027 ,  G09G2310/0272 ,  H03M1/68 ,  H03M1/745 ,  H03M1/765 ,  H03M1/802

摘要： A digital-to-analog converter includes a voltage-to-current converter, a current-mode digital-to-analog converter and an operational amplifier. The voltage-to-current converter generates a first current signal, and the current-mode digital-to-analog converter generates a second current signal. The operational amplifier modulates a drain current in response to the second current signal and generates an output signal having an offset.

摘要翻译： 数模转换器包括电压 - 电流转换器，电流模式数模转换器和运算放大器。 电压 - 电流转换器产生第一电流信号，并且电流模式数模转换器产生第二电流信号。 运算放大器响应于第二电流信号调制漏极电流并产生具有偏移的输出信号。

公开(公告)号：US20080272846A1

公开(公告)日：2008-11-06

申请号：US11975103

申请日：2007-10-17

申请人： Hyoung-Rae Kim

发明人： Hyoung-Rae Kim

IPC分类号： H03F3/45

CPC分类号： H03F3/45179 ,  H03F3/3022 ,  H03F2200/297 ,  H03F2200/456 ,  H03F2203/30015 ,  H03F2203/45292 ,  H03F2203/45318 ,  H03F2203/45364 ,  H03F2203/45626

摘要： An adaptive biasing input stage includes pairs of differentially coupled amplifying and sensing field effect transistors having gates with differential inputs applied thereon. In addition, a static current source is coupled to sources of the amplifying and sensing field effect transistors at a predetermined node. Also, current mirrors are coupled to the sensing field effect transistors for forming loop mechanisms for increasing the current through the predetermined node when the differential inputs have a non-zero difference.

摘要翻译： 自适应偏置输入级包括具有施加差分输入的门的差分耦合放大和感测场效应晶体管对。 此外，静态电流源耦合到预定节点处的放大和感测场效应晶体管的源极。 此外，当差分输入具有非零差时，电流镜耦合到感测场效应晶体管，用于形成用于增加通过预定节点的电流的环路机构。

公开(公告)号：US20110043185A1

公开(公告)日：2011-02-24

申请号：US12859335

申请日：2010-08-19

申请人： Hyoung-Rae Kim

发明人： Hyoung-Rae Kim

IPC分类号： G05F3/02

CPC分类号： G05F3/242

摘要： A current reference circuit includes a proportional-to-absolute temperature (PTAT) current generator, a band-gap reference circuit and a current replication circuit. The PTAT generator generates a PTAT current. The band-gap reference circuit generates a reference voltage based on the PTAT current and generates a second current by cancelling a first current from the PTAT current. The first current has a zero temperature coefficient and the second current has a positive temperature coefficient. The current replication circuit replicates the first current based on the PTAT current and the second current.

摘要翻译： 电流参考电路包括比例绝对温度（PTAT）电流发生器，带隙基准电路和电流复制电路。 PTAT发生器产生PTAT电流。 带隙基准电路基于PTAT电流产生参考电压，并通过从PTAT电流消除第一电流而产生第二电流。 第一电流具有零温度系数，第二电流具有正温度系数。 当前复制电路基于PTAT电流和第二电流复制第一电流。

公开(公告)号：US07864134B2

公开(公告)日：2011-01-04

申请号：US10989765

申请日：2004-11-16

申请人： Hyoung-Rae Kim ,  Wan-Jung Kim

发明人： Hyoung-Rae Kim ,  Wan-Jung Kim

IPC分类号： G09G5/00

CPC分类号： H04M1/0266 ,  G06F3/1431 ,  G09G3/3611 ,  G09G2340/10 ,  G09G2340/12 ,  H04M1/0214 ,  H04M2250/16 ,  H04W52/027 ,  Y02D70/144 ,  Y02D70/164

摘要： Provided is a display device of a mobile phone with a sub memory. The display device includes a display panel for displaying application data and state display data corresponding to a main image data signal used to display various application data and a sub image data signal including state display data and picture control signals, a sub memory for storing state display data and picture control signals for outputting state display data and picture control signals to the display panel, and a display driver which drives images or data to be displayed on the display panel.

摘要翻译： 提供具有副存储器的移动电话的显示装置。 显示装置包括用于显示与用于显示各种应用数据的主图像数据信号相对应的应用数据和状态显示数据的显示面板和包括状态显示数据和图像控制信号的子图像数据信号，用于存储状态显示的子存储器 用于向显示面板输出状态显示数据和图像控制信号的数据和图像控制信号;以及驱动要在显示面板上显示的图像或数据的显示驱动器。

公开(公告)号：US07728854B2

公开(公告)日：2010-06-01

申请号：US11335522

申请日：2006-01-20

申请人： Hyoung-Rae Kim ,  Jong-Seon Kim

发明人： Hyoung-Rae Kim ,  Jong-Seon Kim

IPC分类号： G09G5/00

CPC分类号： G09G3/3696 ,  G09G3/3406 ,  G09G3/3648 ,  G09G2320/0276 ,  G09G2320/0626 ,  G09G2360/144

摘要： A gamma correction device and method thereof is described herein, in which gray-scale voltages may be generated that correspond with a plurality of gamma values. The gray-scale voltages may be generated by adjusting output ranges of the gray-scale voltages while fixing a gamma correction voltage on a constant level. The gamma correction device may include a gamma correction voltage generator generating a plurality of gamma correction voltages corresponding to a reference gamma value; a gray-scale voltage generation circuit dividing the gamma correction voltages to generate a plurality of sub gray-scale voltage sets each of which includes a sub gray-scale voltage corresponding to each gamma value; and a gray-scale voltage selection circuit outputting one of the sub gray-scale voltages of each sub gray-scale voltage set as a gray-scale voltage.

摘要翻译： 本文描述了伽马校正装置及其方法，其中可以生成与多个伽马值对应的灰度电压。 灰度电压可以通过在将伽马校正电压固定在恒定水平上的同时调整灰度电压的输出范围来产生。 伽马校正装置可以包括产生对应于参考伽马值的多个伽马校正电压的伽马校正电压发生器; 灰度级电压产生电路，分割伽马校正电压以产生多个亚灰度级电压组，每个子灰度级电压组包括对应于每个伽马值的次灰度级电压; 以及灰度电压选择电路，输出设置为灰度级电压的每个副灰度级电压的子灰度级电压之一。

公开(公告)号：US20060164355A1

公开(公告)日：2006-07-27

申请号：US11335522

申请日：2006-01-20

申请人： Hyoung-Rae Kim ,  Jong-Seon Kim

发明人： Hyoung-Rae Kim ,  Jong-Seon Kim

IPC分类号： G09G3/36

CPC分类号： G09G3/3696 ,  G09G3/3406 ,  G09G3/3648 ,  G09G2320/0276 ,  G09G2320/0626 ,  G09G2360/144

摘要： A gamma correction device and method thereof is described herein, in which gray-scale voltages may be generated that correspond with a plurality of gamma values. The gray-scale voltages may be generated by adjusting output ranges of the gray-scale voltages while fixing a gamma correction voltage on a constant level. The gamma correction device may include a gamma correction voltage generator generating a plurality of gamma correction voltages corresponding to a reference gamma value; a gray-scale voltage generation circuit dividing the gamma correction voltages to generate a plurality of sub gray-scale voltage sets each of which includes a sub gray-scale voltage corresponding to each gamma value; and a gray-scale voltage selection circuit outputting one of the sub gray-scale voltages of each sub gray-scale voltage set as a gray-scale voltage.

摘要翻译： 本文描述了伽马校正装置及其方法，其中可以生成与多个伽马值对应的灰度电压。 灰度电压可以通过在将伽马校正电压固定在恒定水平上的同时调整灰度电压的输出范围来产生。 伽马校正装置可以包括产生对应于参考伽马值的多个伽马校正电压的伽马校正电压发生器; 灰度级电压产生电路，分割伽马校正电压以产生多个亚灰度级电压组，每个子灰度级电压组包括对应于每个伽马值的次灰度级电压; 以及灰度电压选择电路，输出设置为灰度级电压的每个副灰度级电压的子灰度级电压之一。

公开(公告)号：US20050156854A1

公开(公告)日：2005-07-21

申请号：US10417585

申请日：2003-04-17

申请人： Jae-Ho Park ,  Hyoung-Rae Kim

发明人： Jae-Ho Park ,  Hyoung-Rae Kim

IPC分类号： G02F1/133 ,  G09G3/20 ,  G09G3/36 ,  H02M3/00 ,  H02M3/07 ,  H04N5/66

CPC分类号： G09G3/3696 ,  G09G2330/02

摘要： A highly efficient LCD driving voltage generating circuit and method consumes a relatively small amount of power, as compared to conventional means. The LCD driving voltage generating circuit comprises a DC-DC converter for boosting an input voltage in response to a clock signal and for outputting the boosted voltage as a first driving voltage; a voltage controlled oscillator for generating the clock signal at a frequency that changes in response to the level of a control voltage; and a control voltage generator for generating the control voltage in response to the difference between a reference voltage and a feedback voltage derived from the first driving voltage. In this manner, as the feedback voltage becomes lower than a reference voltage, the frequency of the clock signal input into a DC-DC converter increases. If the feedback voltage is lower than a predetermined voltage, this indicates that the level of the first driving voltage is lower than a predetermined value, and thus current consumption of the LCD panel is large. It is possible to decrease power consumption and increase boosting efficiency by changing the frequency of the clock signal used for boosting of a DC-DC converter according to the current consumption of the LCD panel.

摘要翻译： 与传统方法相比，高效率的LCD驱动电压产生电路和方法消耗相对较小的功率。 LCD驱动电压发生电路包括：DC-DC转换器，用于响应时钟信号升压输入电压，并输出升压电压作为第一驱动电压; 用于以响应于控制电压的电平而变化的频率产生时钟信号的压控振荡器; 以及控制电压发生器，用于响应于参考电压和从第一驱动电压导出的反馈电压之间的差产生控制电压。 以这种方式，当反馈电压变得低于参考电压时，输入到DC-DC转换器的时钟信号的频率增加。 如果反馈电压低于预定电压，则表明第一驱动电压的电平低于预定值，因此LCD面板的电流消耗大。 根据LCD面板的电流消耗，通过改变用于升压DC-DC转换器的时钟信号的频率，可以降低功耗并提高提升效率。