公开(公告)号：US09183801B2

公开(公告)日：2015-11-10

申请号：US14018406

申请日：2013-09-04

Applicant: Novatek Microelectronics Corp.

Inventor： Sou-Chieh Chang ,  Shun-Hsun Yang ,  Tse-Hung Wu

IPC: G09G3/36

CPC classification number: G09G3/3614

Abstract: A source driver apparatus configured to drive a display panel is provided. The source driver apparatus includes a data operation circuit and a pixel driving circuit. The data operation circuit is configured to receive pixel data and perform a polarity determination operation on the pixel data to determine a polarity distribution information of pixels on the display panel. The pixel driving circuit is coupled to the data operation circuit. The pixel driving circuit is configured to drive the display panel according to the pixel data and the polarity distribution information. Furthermore, a driving method of the display panel is also provided.

Abstract translation: 提供了构造成驱动显示面板的源驱动器装置。 源极驱动器装置包括数据运算电路和像素驱动电路。 数据运算电路被配置为接收像素数据并对像素数据执行极性确定操作，以确定显示面板上的像素的极性分布信息。 像素驱动电路耦合到数据运算电路。 像素驱动电路被配置为根据像素数据和极性分布信息来驱动显示面板。 此外，还提供了显示面板的驱动方法。

公开(公告)号：US20150042395A1

公开(公告)日：2015-02-12

申请号：US14083446

申请日：2013-11-19

Applicant: Novatek Microelectronics Corp.

Inventor： Shun-Hsun Yang

IPC: G09G3/22 ,  H03K3/012

CPC classification number: G09G3/22 ,  G09G3/20 ,  G09G3/3275 ,  G09G3/3685 ,  G09G2310/027 ,  G09G2310/0289 ,  G09G2310/0297 ,  G09G2330/025 ,  G09G2340/16

Abstract: A source driver and a method to reduce peak current of the source driver are provided. The source driver includes a latch circuit, a level shifter and a digital-to-analog converter (DAC) circuit. The latch circuit latches current bit-data. The latch circuit is coupled to an input terminal of the level shifter. The DAC circuit is coupled to an output terminal of the level shifter. When the current bit-data is not a complement of previous bit-data, the latch circuit selects and outputs the current bit-data to the input terminal of the level shifter, and the DAC circuit outputs a voltage corresponding to the output data of the level shifter. When the current bit-data is the complement of the previous bit-data, the latch circuit selects and outputs the previous bit-data to the input terminal of the level shifter, and the DAC circuit outputs a voltage corresponding to the current bit-data.

Abstract translation: 提供源驱动器和减少源驱动器峰值电流的方法。 源极驱动器包括锁存电路，电平转换器和数模转换器（DAC）电路。 锁存电路锁存当前位数据。 锁存电路耦合到电平移位器的输入端。 DAC电路耦合到电平转换器的输出端。 当当前位数据不是先前位数据的补码时，锁存电路选择并将当前位数据输出到电平移位器的输入端，DAC电路输出对应于电平移位器的输出数据的电压 电平转换器。 当前位数据是前一位数据的补码时，锁存电路选择并输出前一位数据至电平移位器的输入端，DAC电路输出与当前位数据相对应的电压 。

公开(公告)号：US20140160104A1

公开(公告)日：2014-06-12

申请号：US13964120

申请日：2013-08-12

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Ying-Zu Lin ,  Chia-Wei Su ,  Shun-Hsun Yang ,  Chia-Hsun Kuo ,  Li-Tang Lin

IPC: G09G3/36

CPC classification number: G09G3/3614 ,  G09G3/3685 ,  G09G2310/0248 ,  G09G2330/023 ,  G09G2340/16

Abstract: A display driving method and an associated driving circuit are provided, where the display driving method includes: checking relationships between two voltage levels respectively represented by two continuously received digital codes received by a specific digital code input terminal and a first predetermined threshold, and preferably further checking a relationship between at least one voltage level represented by at least one digital code of the two continuously received digital codes and a first predetermined zone, in order to determine whether to pre-charge a specific set of display cells within a plurality of sets of display cells, the specific set corresponding to the specific digital code input terminal; when it is determined to pre-charge the specific set of display cells, temporarily conducting a pre-charging voltage generator to the specific set of display cells to pre-charge the specific set of display cells.

Abstract translation: 提供一种显示驱动方法和相关联的驱动电路，其中显示驱动方法包括：检查分别由由特定数字码输入端接收的两个连续接收的数字码和第一预定阈值表示的两个电压电平之间的关系， 检查由两个连续接收的数字代码中的至少一个数字代码表示的至少一个电压电平与第一预定区域之间的关系，以便确定是否对多组集合中的特定的一组显示单元预充电 显示单元，具体设置对应于特定的数字代码输入端; 当确定为特定的显示单元组预充电时，暂时将特定的显示单元组预充电电压发生器进行预充电以对特定的显示单元组进行预充电。

公开(公告)号：US20140132587A1

公开(公告)日：2014-05-15

申请号：US13957440

申请日：2013-08-02

Applicant: NOVATEK Microelectronics Corp.

Inventor： Po-Yu Tseng ,  Chia-Wei Su ,  Po-Hsiang Fang ,  Shun-Hsun Yang ,  Hsin-Hung Lee

IPC: G09G3/36

CPC classification number: G09G3/3696 ,  G09G3/3614 ,  G09G3/3688 ,  G09G2320/0673

Abstract: The present invention discloses an integrated source driver for a liquid crystal display device. The integrated source driver includes a reference voltage generating circuit, for providing a plurality of adjustable voltage ranges within a supply voltage and a ground level, and a reference voltage selecting circuit, including a plurality of digital to analog converters, for selecting and generating a plurality of internal reference voltages from the plurality of adjustable voltage ranges, respectively. The plurality of adjustable voltage ranges decrease progressively.

Abstract translation: 本发明公开了一种液晶显示装置的集成源极驱动器。 集成源极驱动器包括用于在电源电压和地电平内提供多个可调电压范围的参考电压产生电路，以及包括多个数模转换器的参考电压选择电路，用于选择和产生多个 分别来自多个可调电压范围的内部基准电压。 多个可调电压范围逐渐降低。

公开(公告)号：US20140111494A1

公开(公告)日：2014-04-24

申请号：US14048013

申请日：2013-10-07

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chia-Wei Su ,  Po-Yu Tseng ,  Shun-Hsun Yang ,  Po-Hsiang Fang

IPC: G09G3/36

CPC classification number: G09G3/3614 ,  G09G2310/0248 ,  G09G2330/023

Abstract: A self-detection charge sharing module for a liquid crystal display device is disclosed. The self-detection charge sharing module includes at least one detecting unit, for detecting a plurality of input voltages of a plurality of operational amplifiers driving a plurality of data line sand a plurality of output voltage of the plurality of data line, to generate at least one detecting result, and at least one charge sharing unit, for conducting connection between at least one first data line and at least one second data line among the plurality of data line when the at least one detecting result indicates at least one corresponding first input voltage and at least one corresponding second input voltage among the plurality of input voltage have opposite voltage variation direction and vary toward each other. The at least one first input voltage and the at least one second input voltage maintain respective polarities.

Abstract translation: 公开了一种用于液晶显示装置的自检电荷共享模块。 自检电荷共享模块包括至少一个检测单元，用于检测多个运算放大器的多个输入电压，该多个运算放大器驱动多条数据线砂多个数据线的多个输出电压，至少产生 一个检测结果和至少一个电荷共享单元，用于当所述至少一个检测结果指示至少一个对应的第一输入电压时，在所述多个数据线中的至少一个第一数据线和至少一个第二数据线之间进行连接 并且所述多个输入电压中的至少一个对应的第二输入电压具有相反的电压变化方向并且彼此变化。 所述至少一个第一输入电压和所述至少一个第二输入电压维持相应的极性。

公开(公告)号：US20140071106A1

公开(公告)日：2014-03-13

申请号：US13677314

申请日：2012-11-15

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Jr-Ching Lin ,  Hsin-Hung Lee ,  Chia-Wei Su ,  Po-Yu Tseng ,  Shun-Hsun Yang ,  Po-Hsiang Fang

IPC: G09G1/00

CPC classification number: G09G3/3696 ,  G09G1/005 ,  G09G3/3688 ,  G09G2320/0673

Abstract: A source driver includes a first drive channel circuit, a voltage controller and a first programmable voltage buffer unit. The first drive channel circuit receives a first pixel data from the timing controller via a data bus, converts the first pixel data to a first drive voltage according to a first reference voltage group, and drives a display panel by the first drive voltage. The voltage controller receives a voltage command from the timing controller, generates and changes a first reference voltage configuration data according to the voltage command. The first programmable voltage buffer unit is coupled to the voltage controller and the first drive channel circuit, and receives the first reference voltage configuration data to generate and adjust the first reference voltage group for applying to the first drive channel circuit. Furthermore, a method for updating a new gamma curve by the source driver is also provided.

Abstract translation: 源驱动器包括第一驱动通道电路，电压控制器和第一可编程电压缓冲器单元。 第一驱动通道电路经由数据总线从定时控制器接收第一像素数据，根据第一参考电压组将第一像素数据转换为第一驱动电压，并且通过第一驱动电压驱动显示面板。 电压控制器从定时控制器接收电压指令，根据电压指令产生并改变第一参考电压配置数据。 第一可编程电压缓冲器单元耦合到电压控制器和第一驱动通道电路，并且接收第一参考电压配置数据以产生和调整第一参考电压组以施加到第一驱动通道电路。 此外，还提供了用于由源驱动器更新新伽玛曲线的方法。