公开(公告)号：US20110148953A1

公开(公告)日：2011-06-23

申请号：US13037755

申请日：2011-03-01

申请人： Yasuyuki KUDO ,  Akihito AKAI ,  Kazuo OOKADO ,  Kazunari KUROKAWA ,  Atsuhiro HIGA

发明人： Yasuyuki KUDO ,  Akihito AKAI ,  Kazuo OOKADO ,  Kazunari KUROKAWA ,  Atsuhiro HIGA

IPC分类号： G09G5/10

CPC分类号： G09G3/2092 ,  G09G3/20 ,  G09G3/2011 ,  G09G3/3614 ,  G09G3/3688 ,  G09G3/3696 ,  G09G2310/027 ,  G09G2320/0626 ,  G09G2320/066 ,  G09G2320/08 ,  G09G2330/021 ,  G09G2330/028 ,  G09G2360/18 ,  H03F3/347 ,  H03F3/45475

摘要： A display driver having a first mode where a number of colors to be displayed is smaller than a predetermined number and a second mode where a number of colors to be displayed is equal to or larger than the predetermined number. A generation circuit generates gray scale voltages having a plurality of levels for positive polarity and negative polarity. In the first mode, the generation circuit decreases a current flowing into an internal circuit which generates a gray scale voltage of an intermediate level other than two gray scale voltages of a lowest and a highest level, in comparison to a current flowing in the second mode. In the first mode, the selection circuit selects a gray scale voltage in accordance with the display data, from the two gray scale voltages of the lowest and the highest level gray scale voltage which are generated from the generation circuit.

摘要翻译： 具有要显示的颜色数量小于预定数量的第一模式的显示驱动器和要显示的颜色数量等于或大于预定数量的第二模式。 一代电路产生具有正极性和负极性的多个电平的灰度电压。 在第一模式中，与在第二模式中流动的电流相比，生成电路减少流入内部电路的电流，该内部电路产生除了最低和最高电平的两个灰度级电压之外的中间电平的灰度电压 。 在第一模式中，选择电路根据从生成电路产生的最低和最高电平灰度级电压的两个灰度级电压，根据显示数据选择灰度级电压。

公开(公告)号：US20120139972A1

公开(公告)日：2012-06-07

申请号：US13372814

申请日：2012-02-14

申请人： Yasuyuki KUDO ,  Akihito AKAI ,  Kazuo OOKADO ,  Kazunari KUROKAWA ,  Hiroki AIZAWA

发明人： Yasuyuki KUDO ,  Akihito AKAI ,  Kazuo OOKADO ,  Kazunari KUROKAWA ,  Hiroki AIZAWA

IPC分类号： G09G3/36 ,  G09G5/02 ,  G09G5/10

CPC分类号： G09G3/3607 ,  G09G3/3614 ,  G09G3/3688 ,  G09G3/3696 ,  G09G2310/027 ,  G09G2320/0276 ,  G09G2320/0606 ,  G09G2320/0673

摘要： Display driving arrangements including: generation circuit dividing a reference voltage by variable resistors for plural levels of voltages; a decoder circuit decoding gray scale voltage corresponding to the display data among the levels of voltages; and a register setting variable resisters resistance values to adjust amplitude and gradient of the gamma characteristic curve of the gray scale voltages with respect to the gray scale number, the generation circuit having a group of resistive voltage dividing circuits dividing the reference voltage, a variable resister amplitude adjusting the gamma characteristic curve in accordance with register setting values connected with a side of the reference voltage in series, being closer to the side of the reference voltage than the group of resistive voltage dividing circuits, a variable resister to adjust the gradient of the gamma characteristic curve per the register setting values connected within the group of resistive voltage dividing circuits in series.

摘要翻译： 显示驱动装置包括：通过可变电阻器对多个电压电平分压参考电压的发电电路; 解码器电路，解码与电压电平之间的显示数据相对应的灰度级电压; 并且寄存器设置变量阻止电阻值以调整相对于灰度级数的灰度级电压的伽马特性曲线的幅度和梯度，所述发生电路具有划分参考电压的一组电阻分压电路，可变电阻器 根据与参考电压的一侧串联连接的寄存器设定值来调整伽马特性曲线，其比基于电阻分压电路的组更接近参考电压的一侧;变阻器，用于调整 每个串联的电阻分压电路组内的寄存器设定值的伽马特性曲线。