公开(公告)号：US08314764B2

公开(公告)日：2012-11-20

申请号：US12452419

申请日：2008-06-24

申请人： Byung-Doo Kim ,  Hee-Jong Park ,  Ju-Young No ,  Sang-Hoon Lee

发明人： Byung-Doo Kim ,  Hee-Jong Park ,  Ju-Young No ,  Sang-Hoon Lee

IPC分类号： G09G3/36

CPC分类号： G09G3/3688 ,  G09G2330/021 ,  H03F1/34 ,  H03F3/3022 ,  H03F3/45183 ,  H03F3/45192 ,  H03F3/45475 ,  H03F2200/297 ,  H03F2203/30021 ,  H03F2203/45028 ,  H03F2203/45632

摘要： An amplifying circuit of a display device including a plurality of pixels includes an input unit, a bias unit, and an output unit. The input unit is coupled between a first power source for supplying a first voltage and a second power source for supplying a second voltage, receives a first input signal and a second input signal, and is controlled by the first and second input signals. The bias unit receives a bias voltage for operating the input unit, and includes a first node and a second node controllable by the input unit. The output unit applies an output voltage to a pixel by using a first output transistor turned on/off by a signal applied to the first node and a second output transistor turned on/off by a signal applied to the second node, and the first output transistor is a different type to the second output transistor. In this instance, the input unit includes a first input transistor having a first terminal coupled to a first power source and being turned on/off by a first input signal and a second input transistor of the same type as the first input transistor, having a first terminal coupled to the first power source, and being turned on/off by a second input signal. The bias unit includes a first transistor controllable by the on/off state of the first input transistor and a second transistor controllable by the on/off state of the second input transistor.

摘要翻译： 包括多个像素的显示装置的放大电路包括输入单元，偏置单元和输出单元。 输入单元耦合在用于提供第一电压的第一电源和用于提供第二电压的第二电源之间，接收第一输入信号和第二输入信号，并由第一和第二输入信号控制。 偏置单元接收用于操作输入单元的偏置电压，并且包括可由输入单元控制的第一节点和第二节点。 输出单元通过使用施加到第一节点的信号通过施加到第一节点的信号通过第一输出晶体管施加输出电压，并且通过施加到第二节点的信号将第二输出晶体管导通/截止，并且第一输出 晶体管是与第二输出晶体管不同的类型。 在这种情况下，输入单元包括第一输入晶体管，其具有耦合到第一电源并通过第一输入信号导通/截止的第一端子和与第一输入晶体管相同类型的第二输入晶体管，第一输入晶体管具有 第一端子，耦合到第一电源，并由第二输入信号导通/截止。 偏置单元包括可由第一输入晶体管的导通/截止状态控制的第一晶体管和可由第二输入晶体管的导通/截止状态控制的第二晶体管。

公开(公告)号：US20100134528A1

公开(公告)日：2010-06-03

申请号：US12452341

申请日：2008-06-24

申请人： Byung-Doo Kim ,  Hee-Jong Park ,  Ju-Young No ,  Sang-Hoon Lee

发明人： Byung-Doo Kim ,  Hee-Jong Park ,  Ju-Young No ,  Sang-Hoon Lee

IPC分类号： G06F3/038 ,  G09G5/10

CPC分类号： G09G3/3688 ,  G09G3/3696 ,  G09G2310/027 ,  G09G2310/0291

摘要： The present invention relates to a liquid crystal display, a driving device thereof, a digital to analog converter, and an output voltage amplifying circuit. The present invention provides a liquid crystal display driving device including a reference gray voltage generator for generating a plurality of reference gray voltages, and a data driver for generating a plurality of gray voltages based on the plurality of reference gray voltages and applying a data signal that is generated by selecting a gray voltage corresponding to m-bit video signals applied from the outside from among the plurality of gray voltages to the pixel The data driver includes: a voltage generator for selecting a first gray voltage and a second gray voltage corresponding to bit values of (m−k) bits from among the video signal from among the plurality of gray voltages, and outputting the first and second gray voltages; an output voltage generator for outputting 2k voltages determined as one of the first and second gray voltages corresponding to bit values of k bits from among the video signal; and an output voltage amplifier for generating the data signal by combining the 2k voltages, and applying the data signal to a plurality of pixels. According to the present invention, a liquid crystal display having a small cost and area can be realized.

摘要翻译： 本发明涉及液晶显示器，其驱动装置，数模转换器和输出电压放大电路。 本发明提供一种液晶显示驱动装置，包括用于产生多个参考灰度电压的参考灰度电压发生器和用于基于多个参考灰度电压产生多个灰度电压的数据驱动器，并且施加数据信号， 通过选择与多个灰度电压之间从外部施加的m位视频信号相对应的像素产生灰度电压。数据驱动器包括：电压发生器，用于选择对应于位的第一灰色电压和第二灰色电压 从多个灰度电压的视频信号中的（m-k）比特的值，并输出第一和第二灰度电压; 输出电压发生器，用于输出与视频信号中的k位的位值对应的第一和第二灰度电压之一确定的2k电压; 以及输出电压放大器，用于通过组合2k电压来生成数据信号，并将数据信号施加到多个像素。 根据本发明，可以实现具有小成本和面积的液晶显示器。

公开(公告)号：US08294657B2

公开(公告)日：2012-10-23

申请号：US12452341

申请日：2008-06-24

申请人： Byung-Doo Kim ,  Hee-Jong Park ,  Ju-Young No ,  Sang-Hoon Lee

发明人： Byung-Doo Kim ,  Hee-Jong Park ,  Ju-Young No ,  Sang-Hoon Lee

IPC分类号： G09G3/36

CPC分类号： G09G3/3688 ,  G09G3/3696 ,  G09G2310/027 ,  G09G2310/0291

摘要： The present invention relates to a liquid crystal display, a driving device thereof, a digital to analog converter, and an output voltage amplifying circuit. The present invention provides a liquid crystal display driving device including a reference gray voltage generator for generating a plurality of reference gray voltages, and a data driver for generating a plurality of gray voltages based on the plurality of reference gray voltages and applying a data signal that is generated by selecting a gray voltage corresponding to m-bit video signals applied from the outside from among the plurality of gray voltages to the pixel The data driver includes: a voltage generator for selecting a first gray voltage and a second gray voltage corresponding to bit values of (m−k) bits from among the video signal from among the plurality of gray voltages, and outputting the first and second gray voltages; an output voltage generator for outputting 2k voltages determined as one of the first and second gray voltages corresponding to bit values of k bits from among the video signal; and an output voltage amplifier for generating the data signal by combining the 2k voltages, and applying the data signal to a plurality of pixels. According to the present invention, a liquid crystal display having a small cost and area can be realized.

摘要翻译： 本发明涉及液晶显示器，其驱动装置，数模转换器和输出电压放大电路。 本发明提供一种液晶显示驱动装置，包括用于产生多个参考灰度电压的参考灰度电压发生器和用于基于多个参考灰度电压产生多个灰度电压的数据驱动器，并且施加数据信号， 通过选择与多个灰度电压之间从外部施加的m位视频信号相对应的像素产生灰度电压。数据驱动器包括：电压发生器，用于选择对应于位的第一灰色电压和第二灰色电压 从多个灰度电压的视频信号中的（m-k）比特的值，并输出第一和第二灰度电压; 输出电压发生器，用于输出与视频信号中的k位的位值对应的第一和第二灰度电压之一确定的2k电压; 以及输出电压放大器，用于通过组合2k电压来生成数据信号，并将数据信号施加到多个像素。 根据本发明，可以实现具有小成本和面积的液晶显示器。

公开(公告)号：US20100134462A1

公开(公告)日：2010-06-03

申请号：US12452419

申请日：2008-06-24

申请人： Byung-Doo Kim ,  Hee-Jong Park ,  Ju-Young No ,  Sang-Hoon Lee

发明人： Byung-Doo Kim ,  Hee-Jong Park ,  Ju-Young No ,  Sang-Hoon Lee

IPC分类号： G09G3/36 ,  G09G5/00

CPC分类号： G09G3/3688 ,  G09G2330/021 ,  H03F1/34 ,  H03F3/3022 ,  H03F3/45183 ,  H03F3/45192 ,  H03F3/45475 ,  H03F2200/297 ,  H03F2203/30021 ,  H03F2203/45028 ,  H03F2203/45632

摘要： An amplifying circuit of a display device including a plurality of pixels includes an input unit, a bias unit, and an output unit. The input unit is coupled between a first power source for supplying a first voltage and a second power source for supplying a second voltage, receives a first input signal and a second input signal, and is controlled by the first and second input signals. The bias unit receives a bias voltage for operating the input unit, and includes a first node and a second node controllable by the input unit. The output unit applies an output voltage to a pixel by using a first output transistor turned on/off by a signal applied to the first node and a second output transistor turned on/off by a signal applied to the second node, and the first output transistor is a different type to the second output transistor. In this instance, the input unit includes a first input transistor having a first terminal coupled to a first power source and being turned on/off by a first input signal and a second input transistor of the same type as the first input transistor, having a first terminal coupled to the first power source, and being turned on/off by a second input signal. The bias unit includes a first transistor controllable by the on/off state of the first input transistor and a second transistor controllable by the on/off state of the second input transistor.

摘要翻译： 包括多个像素的显示装置的放大电路包括输入单元，偏置单元和输出单元。 输入单元耦合在用于提供第一电压的第一电源和用于提供第二电压的第二电源之间，接收第一输入信号和第二输入信号，并由第一和第二输入信号控制。 偏置单元接收用于操作输入单元的偏置电压，并且包括可由输入单元控制的第一节点和第二节点。 输出单元通过使用施加到第一节点的信号通过施加到第一节点的信号通过第一输出晶体管施加输出电压，并且通过施加到第二节点的信号将第二输出晶体管导通/截止，并且第一输出 晶体管是与第二输出晶体管不同的类型。 在这种情况下，输入单元包括第一输入晶体管，其具有耦合到第一电源并通过第一输入信号导通/截止的第一端子和与第一输入晶体管相同类型的第二输入晶体管，第一输入晶体管具有 第一端子，耦合到第一电源，并由第二输入信号导通/截止。 偏置单元包括可由第一输入晶体管的导通/截止状态控制的第一晶体管和可由第二输入晶体管的导通/截止状态控制的第二晶体管。

公开(公告)号：US20100231577A1

公开(公告)日：2010-09-16

申请号：US12681801

申请日：2008-10-02

申请人： Byung-Doo Kim ,  Hee-Jong Park ,  Ju-Young No

发明人： Byung-Doo Kim ,  Hee-Jong Park ,  Ju-Young No

IPC分类号： G09G5/00

CPC分类号： G09G3/3688 ,  G09G3/3614 ,  G09G3/3648 ,  G09G2310/027 ,  G09G2330/045 ,  H03F3/72 ,  H03F2203/7231

摘要： An output voltage amplifier, and a driving device of a liquid crystal display using the same are disclosed. The output voltage amplifier includes: an amplifying unit to generate first and second signals corresponding to a gray voltage input to a first input terminal and a feedback signal input to a second input terminal, and to output a first voltage by using first and second switches driven to be on or off according to the first and second signals; an output unit to apply the first and second data signals to the first and second pixels by using third and fourth switches turned on or off according to the first and second signals; and a feedback circuit unit to selectively supply one of the first voltage and the first and second data signals to the second input terminal. Heating characteristics and a slew rate can be improved.

摘要翻译： 公开了一种输出电压放大器以及使用其的液晶显示器的驱动装置。 输出电压放大器包括：放大单元，用于产生对应于输入到第一输入端的灰度电压和输入到第二输入端的反馈信号的第一和第二信号，以及通过使用驱动的第一和第二开关输出第一电压 根据第一和第二信号开启或关闭; 输出单元，通过使用根据第一和第二信号导通或关断的第三和第四开关将第一和第二数据信号施加到第一和第二像素; 以及反馈电路单元，用于选择性地将第一电压和第一和第二数据信号中的一个提供给第二输入端。 可以提高加热特性和压摆率。