公开(公告)号：USRE45707E1

公开(公告)日：2015-09-29

申请号：US14253900

申请日：2014-04-16

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Yu-Kuang Chang ,  Kuei-Chung Chang ,  Ming-Da Chiang

IPC: H04N5/202 ,  H04N9/69 ,  G09G5/06

CPC classification number: H04N9/69 ,  G09G5/06 ,  G09G2310/0289 ,  G09G2320/0673 ,  G09G2330/021 ,  G09G2330/028 ,  G09G2340/10

Abstract: A display driving circuit comprising a video signal transformation circuit, a reference voltage generating circuit, a DAC and an interpolation operational amplifier is provided. The video signal transformation circuit transforms an input video signal into a transformed video signal with a higher bit depth. The transformed video signal comprises an upper n bits data and a lower m bits data, wherein n+m equals a bit depth of the transformed video signal. The reference voltage generating circuit generates reference voltages. The DAC selects a first reference voltage and a second reference voltage to interpolation operational amplifier from the reference voltages according to an upper n bits data of the transformed video signal. The interpolation operational amplifier outputs a driving voltage to display device according to the first reference voltage, the second reference voltage and the lower m bits data of the transformed video signal.

Abstract translation: 提供了包括视频信号变换电路，参考电压产生电路，DAC和内插运算放大器的显示驱动电路。 视频信号变换电路将输入视频信号变换为具有较高位深度的变换视频信号。 经变换的视频信号包括高n位数据和较低m位数据，其中n + m等于变换视频信号的位深度。 参考电压产生电路产生参考电压。 DAC根据变换的视频信号的高n位数据从参考电压中选择第一参考电压和第二参考电压到插值运算放大器。 内插运算放大器根据变换后的视频信号的第一参考电压，第二参考电压和下位m位数据向显示装置输出驱动电压。

公开(公告)号：US20140191936A1

公开(公告)日：2014-07-10

申请号：US13934247

申请日：2013-07-03

Applicant: NOVATEK Microelectronics Corp.

Inventor： Hsi-Chi Ho ,  Jen-Hao Liao ,  Yu-Kuang Chang

IPC: G09G3/36

CPC classification number: G09G3/3406 ,  G09G2310/0237 ,  G09G2320/0626

Abstract: A driving module for a liquid crystal display device is disclosed. The driving module includes a data line signal processing unit, for generating a plurality of data driving signals, a scan line signal processing unit, for generating a plurality of gate driving signals, and a control unit, for generating a display clock, to control the data line signal processing unit and the scan line signal processing unit to address a plurality of pixels of the liquid crystal display device according to the display clock. The display clock is a normal operating clock under a normal operating mode and is a blanking backlight clock under a blanking backlight mode, wherein a frequency of the normal operating clock is less than a frequency of the blanking backlight clock.

Abstract translation: 公开了一种用于液晶显示装置的驱动模块。 驱动模块包括用于产生多个数据驱动信号的数据线信号处理单元，用于产生多个栅极驱动信号的扫描线信号处理单元和用于产生显示时钟的控制单元，以控制 数据线信号处理单元和扫描线信号处理单元，以根据显示时钟对液晶显示装置的多个像素进行寻​​址。 显示时钟是正常操作模式下的正常操作时钟，并且是在消隐背光模式下的消隐背光时钟，其中正常操作时钟的频率小于消隐背光时钟的频率。

公开(公告)号：US20130293528A1

公开(公告)日：2013-11-07

申请号：US13888372

申请日：2013-05-07

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Chien-Yu Chen ,  Yu-Hsun Peng ,  Wei-Hsiu Chang ,  Yu-Kuang Chang

IPC: G09G3/36

CPC classification number: G09G3/3696 ,  G09G3/3648 ,  G09G2300/0426 ,  G09G2310/06 ,  G09G2310/066 ,  G09G2310/067 ,  G09G2320/0223

Abstract: A display driving apparatus is disclosed. The display driving apparatus includes a display panel, a controller and a driving circuit. The controller receives a signal adjusting data and generates a driving controlling signal according to the signal adjusting data. The driving circuit separately provides a scanning driving signal and a data driving signal to a scanning line and a data line and adjusts at least one electrical property of the scanning driving signal and at least one electrical property of the data driving signal according to the driving controlling signal, wherein the signal adjusting data is generated according to an impedance value of the scanning line and the data line.

Abstract translation: 公开了一种显示驱动装置。 显示驱动装置包括显示面板，控制器和驱动电路。 控制器接收信号调整数据，并根据信号调整数据产生驱动控制信号。 驱动电路分别向扫描线和数据线提供扫描驱动信号和数据驱动信号，并根据驱动控制调节扫描驱动信号的至少一个电特性和数据驱动信号的至少一个电特性 信号，其中根据扫描线和数据线的阻抗值产生信号调整数据。