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    • 1. 发明授权
    • Driver IC for display and display including same
    • 驱动IC用于显示和显示,包括相同
    • US07903071B2
    • 2011-03-08
    • US11890585
    • 2007-08-06
    • Hideto FukudaShinya UdoMasao KumagaiOsamu Kudo
    • Hideto FukudaShinya UdoMasao KumagaiOsamu Kudo
    • G09G3/36
    • G09G3/2011G09G3/20G09G3/3614G09G3/3688G09G3/3696G09G2310/027G09G2310/0297H03M1/069H03M1/687H03M1/76H03M1/765
    • A driver IC for a display that includes a first D/A converter with a 1st selection circuit that receives 1st image signals and supplies a selected positive divisional voltage to a 1st operational amplifier, which supplies a positive pixel voltage by amplifying the selected positive divisional voltage; a 2nd D/A converter with a 2nd selection circuit that receives 2nd image signals and supplies a selected negative divisional voltage to a 2nd operational amplifier, which supplies a negative pixel voltage by amplifying the selected negative divisional voltage; and a polarity switching switch with 1st and 2nd switches connecting the 1st and 2nd D/A converters respectively, the polarity switching switch being switched to supply each of output terminals corresponding to the 1st and 2nd image signals alternately with the positive and negative pixel voltages every horizontal scan period by activating/inactivating the 1st and 2nd switches in a complementary manner.
    • 一种用于显示器的驱动器IC,其包括具有第一选择电路的第一D / A转换器,所述第一选择电路接收第一图像信号并将选择的正分压提供给第一运算放大器,所述第一运算放大器通过放大所选择的正分压 ; 具有第二选择电路的第二D / A转换器,其接收第二图像信号并将选择的负分压提供给第二运算放大器,所述第二运算放大器通过放大所选择的负分压来提供负像素电压; 以及极性切换开关,具有分别连接第一和第二D / A转换器的第一和第二开关,极性切换开关被切换以与正,负像素电压交替地提供与第一和第二图像信号相对应的每个输出端子 水平扫描周期通过以互补的方式激活/停用第1和第2开关。
    • 3. 发明授权
    • D/A converter
    • D / A转换器
    • US07978168B2
    • 2011-07-12
    • US11890437
    • 2007-08-06
    • Hideto FukudaShinya UdoMasao KumagaiOsamu Kudo
    • Hideto FukudaShinya UdoMasao KumagaiOsamu Kudo
    • G09G3/36
    • G09G3/2011G09G3/20G09G3/3614G09G3/3688G09G3/3696G09G2310/027G09G2310/0297H03M1/069H03M1/687H03M1/76H03M1/765
    • A D/A converter for receiving a plurality of divisional voltages and converting a digital signal to an analog voltage with the divisional voltages, the D/A converter includes a selection circuit for receiving the divisional voltages and the digital signal to select one of the divisional voltages. The selection circuit includes a plurality of first switch circuits that are selectively activated in response to the digital signal to select one of the divisional voltages, with each of the first switch circuits being provided with a logic switch function and having an ON resistance when activated, and at least an activated one of the first switch circuits further dividing the selected one of the divisional voltages with the ON resistance. The plurality of switch circuits includes at least one voltage dividing switch circuit used to further divide the selected one of the divisional voltages.
    • AD / A转换器,用于接收多个分压,并将数字信号转换为具有分压的模拟电压,D / A转换器包括用于接收分压的选择电路和数字信号,以选择分压之一 。 选择电路包括多个第一开关电路,其响应于数字信号选择性地激活以选择分压之一,其中每个第一开关电路被提供逻辑开关功能并且在被激活时具有导通电阻, 并且所述第一开关电路中的至少一个被激活的开关电路进一步用所述导通电阻将所选择的所述一个电压分压。 多个开关电路包括至少一个分压开关电路,用于进一步分割所选择的一个分压。
    • 6. 发明授权
    • Integrated circuit free from accumulation of duty ratio errors
    • 集成电路没有占空比误差累积
    • US07180512B2
    • 2007-02-20
    • US10335925
    • 2003-01-03
    • Masao KumagaiHideto FukudaShinya Udo
    • Masao KumagaiHideto FukudaShinya Udo
    • G09G5/00G09G5/10G09G3/34G09G3/36
    • G09G3/3688
    • An integrated circuit includes a first signal-inversion switching circuit which receives a signal supplied from an exterior thereof as a first input signal, followed by outputting the first input signal after logic inversion thereof in response to a first state of a switching signal and outputting the first input signal without logic inversion in response to a second state of the switching signal, a signal processing circuit which performs signal processing based on the output of the first signal-inversion switching circuit, and a second signal-inversion switching circuit which receives the output of the first signal-inversion switching circuit passing through the signal processing circuit as a second input signal, followed by outputting the second input signal after logic inversion thereof in response to the second state of the switching signal and outputting the second input signal without logic inversion in response to the first state of the switching signal.
    • 集成电路包括:第一信号反相切换电路,其接收从其外部提供的信号作为第一输入信号,随后响应于开关信号的第一状态而在其逻辑反相之后输出第一输入信号,并输出 响应于切换信号的第二状态而没有逻辑反转的第一输入信号,基于第一信号反相切换电路的输出执行信号处理的信号处理电路和接收输出的第二信号反相切换电路 通过信号处理电路作为第二输入信号的第一信号反相切换电路,随后响应于切换信号的第二状态而在其逻辑反相之后输出第二输入信号,并输出没有逻辑反转的第二输入信号 响应于开关信号的第一状态。