Digital to analog converter with minimum area and source driver having the same
    1.
    发明授权
    Digital to analog converter with minimum area and source driver having the same 有权
    具有最小面积和源驱动器的数模转换器具有相同的功能

    公开(公告)号:US08054302B2

    公开(公告)日:2011-11-08

    申请号:US11778158

    申请日:2007-07-16

    IPC分类号: G09G3/18

    摘要: Embodiments of the invention provide a digital-to-analog converter (DAC) that is configured to process upper data bits, a control data bit, and a lower data bit using two decoders and a control logic. The resulting DAC provides high resolution output using a minimum circuit area. Embodiments of the invention also provide a sample and hold circuit for a DAC that reduces the effects of parasitic capacitance at the input of an operational amplifier (OP-AMP).

    摘要翻译: 本发明的实施例提供一种数模转换器(DAC),其被配置为使用两个解码器和控制逻辑来处理高数据位,控制数据位和较低数据位。 所得到的DAC使用最小电路面积提供高分辨率输出。 本发明的实施例还提供了用于DAC的采样和保持电路,其减少了在运算放大器(OP-AMP)的输入处的寄生电容的影响。

    Digital to analog converter and source driver
    2.
    发明授权
    Digital to analog converter and source driver 有权
    数模转换器和源驱动器

    公开(公告)号:US07453386B2

    公开(公告)日:2008-11-18

    申请号:US11832095

    申请日:2007-08-01

    IPC分类号: H03M1/66

    CPC分类号: H03M1/68 H03M1/76

    摘要: A digital to analog converter (DAC) converting digital data into a corresponding analog voltage is disclosed. The digital data includes upper bit data and lower bit data and the DAC includes; a first resistor circuit dividing first and second reference voltages to output a plurality of first division voltages, a first decoder selecting one of the first division voltages in response to the upper bit data, a second resistor circuit dividing third and fourth reference voltages to output a plurality of second division voltages, a second decoder selecting one of the second division voltages in response to the lower bit data, and a sample and hold circuit including a first capacitor and a second capacitor, and outputting the analog voltage in response to an output voltage from the first decoder and an output voltage from the second decoder, wherein the sample and hold circuit samples the output voltage of the first decoder during a sample mode, and adds the output voltages of the first and second decoders through the first and second capacitors to output a combined voltage during a hold mode.

    摘要翻译: 公开了将数字数据转换成相应的模拟电压的数模转换器(DAC)。 数字数据包括高位数据和低位数据,DAC包括; 第一电阻器电路,分隔第一和第二参考电压以输出多个第一分压,第一解码器响应于高位数据选择第一分压电压之一;第二电阻器电路,分隔第三和第四参考电压以输出 多个第二分频电压,第二解码器响应于低位数据选择第二除法电压中的一个;以及采样保持电路,包括第一电容器和第二电容器,并且响应于输出电压输出模拟电压 来自第一解码器和来自第二解码器的输出电压,其中采样和保持电路在采样模式期间对第一解码器的输出电压进行采样,并且通过第一和第二电容器将第一和第二解码器的输出电压加到 在保持模式期间输出组合电压。

    Digital/analog converting driver and method
    3.
    发明授权
    Digital/analog converting driver and method 有权
    数字/模拟转换驱动和方法

    公开(公告)号:US07609191B2

    公开(公告)日:2009-10-27

    申请号:US11556729

    申请日:2006-11-06

    IPC分类号: H03M1/68

    摘要: A digital/analog converting driver and a digital/analog converting method, in which the digital/analog converting driver converts digital data having M+N (M and N are integers) bits into an analog voltage and includes a first converting unit, a second converting unit, and an analog voltage outputting unit. The first converting unit converts successive M bits of the digital data into a first voltage. The second converting unit converts successive N bits of the digital data into a second voltage. The analog voltage outputting unit adds the first voltage and the second voltage and outputs the added voltage as the analog voltage. The output range of the first voltage is different from that of the second voltage.

    摘要翻译: 数字/模拟转换驱动器和数字/模拟转换方法,其中数字/模拟转换驱动器将具有M + N(M和N为整数)位的数字数据转换成模拟电压,并且包括第一转换单元,第二转换单元 转换单元和模拟电压输出单元。 第一转换单元将数字数据的连续M位转换为第一电压。 第二转换单元将数字数据的连续N位转换为第二电压。 模拟电压输出单元将第一电压和第二电压相加,并输出相加的电压作为模拟电压。 第一电压的输出范围不同于第二电压的输出范围。

    DIGITAL/ANALOG CONVERTING DRIVER AND METHOD
    4.
    发明申请
    DIGITAL/ANALOG CONVERTING DRIVER AND METHOD 有权
    数字/模拟转换驱动器和方法

    公开(公告)号:US20080309538A1

    公开(公告)日:2008-12-18

    申请号:US11556729

    申请日:2006-11-06

    IPC分类号: H03M1/68

    摘要: A digital/analog converting driver and a digital/analog converting method, in which the digital/analog converting driver converts digital data having M+N (M and N are integers) bits into an analog voltage and includes a first converting unit, a second converting unit, and an analog voltage outputting unit. The first converting unit converts successive M bits of the digital data into a first voltage. The second converting unit converts successive N bits of the digital data into a second voltage. The analog voltage outputting unit adds the first voltage and the second voltage and outputs the added voltage as the analog voltage. The output range of the first voltage is different from that of the second voltage.

    摘要翻译: 数字/模拟转换驱动器和数字/模拟转换方法,其中数字/模拟转换驱动器将具有M + N(M和N为整数)位的数字数据转换成模拟电压,并且包括第一转换单元,第二转换单元 转换单元和模拟电压输出单元。 第一转换单元将数字数据的连续M位转换为第一电压。 第二转换单元将数字数据的连续N位转换为第二电压。 模拟电压输出单元将第一电压和第二电压相加,并输出相加的电压作为模拟电压。 第一电压的输出范围不同于第二电压的输出范围。

    Apparatus for supplying gamma signals
    5.
    发明授权
    Apparatus for supplying gamma signals 有权
    用于提供伽马信号的装置

    公开(公告)号:US06798368B2

    公开(公告)日:2004-09-28

    申请号:US10630717

    申请日:2003-07-31

    IPC分类号: H03M166

    CPC分类号: G09G3/3688 G09G2320/0673

    摘要: A gamma signal supplying apparatus includes a timing controller for storing predetermined gamma values as digital values, and for transmitting one of the digital values serially. The gamma supplying apparatus may further include a gamma digital-to-analog controller (DAC) for receiving the serial digital gamma value, and for converting the serial digital gamma value into a first analog gamma value, and a plurality of column drive units, each of the plurality of column drive units for generating a second analog gamma value, for comparing the second analog gamma value to the first analog gamma value, and for outputting a gray level value based on the second analog gamma value if both values are substantially identical.

    摘要翻译: 伽马信号提供装置包括定时控制器,用于将预定的伽马值存储为数字值,并且用于串行地发送数字值之一。 伽马供给装置还可以包括用于接收串行数字伽马值并用于将串行数字伽马值转换为第一模拟伽马值的伽马数模转换器(DAC)和多个列驱动单元 用于产生第二模拟伽马值,用于将第二模拟伽马值与第一模拟伽马值进行比较,以及如果两个值基本相同,则基于第二模拟伽马值输出灰度值。

    Flexible control of charge share in display panel
    6.
    发明授权
    Flexible control of charge share in display panel 有权
    灵活控制显示面板中的电荷份额

    公开(公告)号:US07928949B2

    公开(公告)日:2011-04-19

    申请号:US11274605

    申请日:2005-11-15

    IPC分类号: G09G3/36 G09G5/00

    摘要: A source driver of a display panel includes a channel state signal generator, first switches, and second switches. The channel state signal generator generates first and second channel state signals that are each activated for a respective time period depending on adjustable state length data. The first switches are opened for uncoupling channel output signals from source lines of the display panel when the first channel state signal is activated. The second switches are closed for coupling together the source lines of the display panel for charge sharing when the second channel state signal is activated.

    摘要翻译: 显示面板的源极驱动器包括通道状态信号发生器,第一开关和第二开关。 信道状态信号发生器根据可调状态长度数据生成各自针对相应时间周期激活的第一和第二信道状态信号。 当第一通道状态信号被激活时,第一开关被打开用于使来自显示面板的源极线的通道输出信号解耦。 当第二通道状态信号被激活时,第二开关闭合以将显示面板的源极线耦合在一起用于电荷共享。

    Cascode-type current mode comparator and receiver, and semiconductor device having the same
    7.
    发明授权
    Cascode-type current mode comparator and receiver, and semiconductor device having the same 有权
    串联型电流模式比较器和接收器,以及具有相同的半导体器件

    公开(公告)号:US07545182B2

    公开(公告)日:2009-06-09

    申请号:US11700117

    申请日:2007-01-31

    IPC分类号: H03K5/22

    CPC分类号: H03K5/2472

    摘要: A current mode comparator for a semiconductor device is disclosed. The current mode comparator may include a logic circuit coupled to a voltage sensing node, a first cascode coupled to the voltage sensing node and a first power node, and a second cascode coupled to the voltage sensing node and a second power node. The logic circuit may convert a voltage of the voltage sensing node to an output signal.

    摘要翻译: 公开了一种用于半导体器件的电流模式比较器。 电流模式比较器可以包括耦合到电压感测节点的逻辑电路,耦合到电压感测节点的第一共源共栅和第一功率节点,以及耦合到电压感测节点和第二功率节点的第二共源共栅。 逻辑电路可以将电压感测节点的电压转换为输出信号。

    Regulated cascode amplifier with small-sized feed-back amplifier
    8.
    发明授权
    Regulated cascode amplifier with small-sized feed-back amplifier 失效
    具有小尺寸反馈放大器的调节共源共栅放大器

    公开(公告)号:US07279985B2

    公开(公告)日:2007-10-09

    申请号:US11053158

    申请日:2005-02-07

    IPC分类号: H03F1/22

    CPC分类号: H03F1/223

    摘要: A regulated cascode amplifier includes a main cascode amplifier and a feed-back amplifier. The main cascode amplifier has an input transistor coupled in a stack with an output transistor at an input control node. The feed-back amplifier including a plurality of transistors with gates of the transistors being coupled together to the input control node and with drains of the transistors being coupled together at a gate of the output transistor. The transistors of the feed-back amplifier are biased from connections to the main cascode amplifier for smaller chip area.

    摘要翻译: 调节级联放大器包括主级联放大器和反馈放大器。 主级联放大器具有与输入控制节点处的输出晶体管堆叠的输入晶体管。 所述反馈放大器包括多个晶体管,所述晶体管的晶体管的栅极被耦合到输入控制节点,并且晶体管的漏极在输出晶体管的栅极耦合在一起。 反馈放大器的晶体管从连接到主级联放大器偏置较小的芯片面积。

    Source driving circuit, display device and method of driving a source driver
    9.
    发明授权
    Source driving circuit, display device and method of driving a source driver 失效
    源驱动电路,驱动源驱动器的显示装置和方法

    公开(公告)号:US07259742B2

    公开(公告)日:2007-08-21

    申请号:US11302230

    申请日:2005-12-14

    IPC分类号: G09G3/36

    摘要: A source driving circuit for a display device may include a first latch configured to store first video data corresponding to a first horizontal line and a second latch configured to store second video data corresponding to a second horizontal line following the first horizontal line. The first and second latches may alternately store video data of different horizontal lines. The source driving circuit may further include a digital-to-analog converter (DAC) configured to convert the stored first and second video data into analog signals, a first sample-and-hold circuit configured to sample and store an output signal of the DAC, a second sample-and-hold circuit configured to sample and store an output signal of the first sample-and-hold circuit, and an output switch configured to provide an output signal of the second sample-and-hold circuits to the display panel.

    摘要翻译: 用于显示装置的源极驱动电路可以包括配置为存储对应于第一水平线的第一视频数据的第一锁存器和被配置为存储对应于第一水平线之后的第二水平线的第二视频数据的第二锁存器。 第一和第二锁存器可以交替地存储不同水平线的视频数据。 源极驱动电路还可以包括被配置为将所存储的第一和第二视频数据转换为模拟信号的数模转换器(DAC),第一采样保持电路被配置为对DAC的输出信号进行采样和存储 配置为采样并存储第一采样保持电路的输出信号的第二采样保持电路,以及配置成将第二采样保持电路的输出信号提供给显示面板的输出开关 。

    Current-mode semiconductor integrated circuit device operating in voltage mode during test mode
    10.
    发明申请
    Current-mode semiconductor integrated circuit device operating in voltage mode during test mode 有权
    电流模式半导体集成电路器件在测试模式下工作于电压模式

    公开(公告)号:US20070176610A1

    公开(公告)日:2007-08-02

    申请号:US11700046

    申请日:2007-01-31

    IPC分类号: G01R27/08

    CPC分类号: G01R31/2884

    摘要: Provided is a current-mode semiconductor integrated circuit device that operates in a voltage mode during a test mode. The current-mode semiconductor integrated circuit device includes a first transmitting converter, a first receiving converter, a second transmitting converter, and a second receiving converter. During the test mode, one of a first signal path and a second signal path is selected according to the location of the chip. In the first signal path, the first transmitting converter, the first receiving converter, and the second transmitting converter operate. In the second signal path, the second transmitting converter, the second receiving converter, and the first transmitting converter operate. Each of the first and second transmitting converters receives a test voltage signal and converts it into a current signal. Each of the first and second receiving converters generates a reference voltage signal, compares it with the test voltage signal, and outputs the comparing result. Accordingly, it is possible to test the current-mode operation of a semiconductor chip with an external tester operating in a current mode by including an interface circuit capable of performing voltage-to-current conversion into the semiconductor chip.

    摘要翻译: 提供了在测试模式期间以电压模式操作的电流模式半导体集成电路器件。 电流模式半导体集成电路装置包括第一发送转换器,第一接收转换器,第二发送转换器和第二接收转换器。 在测试模式期间,根据芯片的位置来选择第一信号路径和第二信号路径之一。 在第一信号路径中,第一发送转换器,第一接收转换器和第二发送转换器工作。 在第二信号路径中,第二发送转换器,第二接收转换器和第一发送转换器工作。 第一和第二发送转换器中的每一个接收测试电压信号并将其转换为电流信号。 第一和第二接收转换器中的每一个产生参考电压信号,将其与测试电压信号进行比较,并输出比较结果。 因此,通过包括能够对半导体芯片进行电压 - 电流转换的接口电路,可以利用以电流模式工作的外部测试器来测试半导体芯片的电流模式操作。