CN102103824B - 显示设备 - Google Patents

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CN102103824B
CN102103824B CN201010215434.5A CN201010215434A CN102103824B CN 102103824 B CN102103824 B CN 102103824B CN 201010215434 A CN201010215434 A CN 201010215434A CN 102103824 B CN102103824 B CN 102103824B
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resistor
control signal
driver
signal
frequency
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CN102103824A (zh
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张光镐
郑震元
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LG Display Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/08—Details of image data interface between the display device controller and the data line driver circuit
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix

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  • Crystallography & Structural Chemistry (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

一种显示设备，包括：显示面板；提供数据信号给显示面板的数据驱动器；提供栅信号给显示面板的栅驱动器；和控制数据驱动器和栅驱动器的时序驱动器，并且该时序驱动器包括频率根据时序驱动器中生成的控制信号而改变的压控振荡器。

Description

显示设备
本申请要求于2009年12月22日在韩国提交的专利申请10-2009-0129155的优先权，在此援引该专利申请的全文作为参考。
技术领域
本申请涉及显示设备。
背景技术
随着信息技术的发展，作为用户与信息之间的连接媒介的显示设备的市场在扩大。因此，诸如液晶显示器(LCD)、有机发光显示器(OLED)、等离子显示面板(PDP)等平板显示器(FPD)的使用在增加。在这些显示器中，通常使用的是实现高清晰度和尺寸可大可小的LCD。
例如LCD或OLED设备的上述显示设备的其中一些由时序驱动器、栅驱动器、数据驱动器等驱动，这些驱动器驱动以矩阵形式设置的多个子像素。
然而，在这种情况下，驱动显示设备的时序驱动器不易于调整压控振荡器(VCO)的频率，或者如果实际输出值不同于设计值，很难进行改变，因而需要改进现有技术的显示设备。
发明内容
一方面，一种显示设备包括：显示面板；提供数据信号给显示面板的数据驱动器；提供栅信号给显示面板的栅驱动器；和控制数据驱动器和栅驱动器的时序驱动器，并且该时序驱动器包括频率根据时序驱动器中生成的控制信号而改变的压控振荡器。
附图说明
包括以提供本发明进一步理解与并入和构成本说明书一部分的附图图示本发明的实施例，并与说明书一起用于解释本发明的原理。
图1是根据本发明示例实施例的显示设备的示意方框图；
图2图示液晶面板的子像素电路的结构；
图3图示有机发光显示面板的子像素电路的结构；
图4是栅驱动器的示意方框图；
图5是数据驱动器的示意方框图；
图6是根据本发明第一示例实施例的时序驱动器的示意方框图；
图7是根据本发明第二示例实施例的压控振荡器(VCO)的示意方框图；
图8是根据本发明第三示例实施例的VCO的示意方框图；
图9用于解释VCO的频率变化操作；和
图10图示VCO的输出频率。
具体实施方式
现在详细参考在附图中图示的本发明的具体实施例。
现在将参考附图详细描述根据本发明示例实施例的显示设备。
如图1所示，根据本发明示例实施例的显示设备包括时序驱动器TCN、显示面板PNL、栅驱动器SDRV和数据驱动器DDRV。
时序驱动器TCN接收来自外部信源的垂直同步信号Vsync、水平同步信号Hsync、数据使能信号DE、时钟信号CLK和数据信号RGB。通过使用诸如垂直同步信号Vsync、水平同步信号Hsync、数据使能信号DE和时钟信号CLK等时序信号，时序控制器TCN控制数据驱动器DDRV和栅驱动器SDRV的操作时序。在这种情况下，因为时序驱动器TCN可以通过在一个水平周期内对数据使能信号DE进行计数来确定帧周期，因而可以省去垂直同步信号Vsync和水平同步信号Hsync。由时序驱动器TCN生成的控制信号可以包括用于控制栅驱动器SDRV的操作时序的栅时序控制信号GDC和用于控制数据驱动器DDRV的操作时序的数据时序控制信号DDC。栅时序控制信号GDC包括栅启动脉冲GSP、栅移位时钟GSC、栅输出使能信号GOE等等。将栅启动脉冲GSP提供给栅驱动集成电路(IC)，由此生成第一栅信号。栅移位时钟GSC是通常输入给栅驱动IC的时钟信号，用于移位栅启动脉冲GSP。栅输出使能信号GOE控制栅驱动IC的输出。数据时序控制信号DDC包括源启动脉冲SSP、源采样时钟SSC、源输出使能信号SOE等等。源启动脉冲SSP控制数据驱动器DDRV的数据采样开始点。源采样时钟SSC是用于根据上升沿或下降沿来控制在数据驱动器DDRV内的数据的采样操作的时钟信号。同时，根据数据传输方法可以省去提供给数据驱动器DDRV的源启动脉冲SSP。
栅驱动器SDRV顺序地生成栅信号，同时以满足以下条件的栅驱动电压的摆动宽度移位信号的电平——包括在显示面板PNL内的子像素SP的晶体管可以响应于时序驱动器TCN提供的栅时序控制信号GDC利用该栅驱动电压的摆动宽度进行操作。栅驱动器SDRV将所生成的栅信号通过栅线SL1～SLm提供给包括在显示面板PNL内的子像素SP。如图2所示，栅驱动器SDRV分别包括移位寄存器61、电平移位器63、连接在移位寄存器61和电平移位器63之间的多个与门、用于反转栅输出使能信号GOE的反相器64等等。移位寄存器61通过使用多个依赖地连接的D触发器根据栅移位时钟GSC顺序地移位栅脉冲GSP。与门62将移位寄存器61的输出信号和栅输出使能信号GOE的反转信号进行“与”运算以生成输出。反相器64反转栅输出使能信号GOE并将该反转的信号提供给与门62。电平移位器63将与门62的输出电压摆动宽度移位至某一栅电压摆动宽度，包括在显示面板PNL内的晶体管可以利用该栅电压摆动宽度进行操作。将电平移位器63输出的栅信号顺序地提供给栅线SL1～SLm。
响应于时序控制器TCN提供的数据时序控制信号DDC，数据驱动器DDRV采样由时序驱动器TCN提供的数据信号DATA，将采样的信号锁存以将它们转换成并行数据系统的数据。在将该信号转换成并行数据系统的数据的过程中，数据驱动器DDRV将数据信号DATA转换成伽玛基准电压。数据驱动器DDRV通过数据线DL1～DLn将所转换的数据信号提供给包括在显示面板PNL内的子像素SP。如图3所示，数据驱动器DDRV分别包括移位寄存器51、数据寄存器52、第一锁存器53、第二锁存器54、转换器55、输出电路56等等。移位寄存器51将时序驱动器TCN提供的源采样时钟SSC移位。移位寄存器51将进位信号CAR发送至相邻的下一级的源驱动IC的移位寄存器。数据寄存器52临时存储时序驱动器TCN提供的数据信号DATA和将该信号提供给第一锁存器53。第一锁存器53根据移位寄存器51顺序提供的时钟对连续输入的数字数据信号DATA进行采样，锁存该采样的数据，和同时输出该锁存的数据。第二锁存器54锁存自第一锁存器53提供的数据，和同时响应于源输出使能信号SOE与其它源驱动IC的第二锁存器同步地输出该锁存的数据。转换器55将第二锁存器54输入的数据信号DATA转换成伽玛基准电压GMA1～GMAn。响应于源输出使能信号SOE，将输出电路56输出的数据信号DATA提供给数据线DL1～DLn。
显示面板PNL包括以矩阵形式设置的子像素SP。显示面板PNL可以配置为液晶面板或有机发光显示面板。当显示面板PNL配置为液晶面板时，子像素SP可以具有如图4所示的电路结构。在图4中，开关晶体管TFT的栅极连接至栅线SL1，通过该栅线提供栅信号，开关晶体管TFT的一端连接至数据线DL1，通过该数据线提供数据信号，开关晶体管TFT的另一端连接至第一节点n1。位于液晶单元Clc一侧的像素电极1的一端连接至与开关晶体管TFT的另一端连接的第一节点n1，位于液晶单元Clc另一侧的公共电极2连接至公共电压线Vcom。存储电容器Cst的一端连接至第一节点n1，存储电容器Cst的另一端连接至公共电压线Vcom。具有这种子像素SP结构的液晶面板可以根据随着包括在各个子像素中的液晶层的变化而变化的光传输来显示图像，包括在各个子像素中的液晶层的变化取决于通过栅线SL1提供的栅信号和通过数据线DL1提供的数据信号。
同时，当显示面板PNL配置为有机发光显示面板时，子像素可以具有如图5所示的电路结构。开关晶体管T1的栅极连接至栅线SL1，通过该栅线提供栅信号，开关晶体管T1的一端连接至数据线DL1，通过该数据线提供数据信号，开关晶体管T1的另一端连接至第一节点n1。驱动晶体管T2的栅极连接至第一节点n1，驱动晶体管T2的一端连接至与第一电源线VDD连接的第二节点n2，通过该第一电源线VDD提供高电势驱动电源VDD，驱动晶体管T2的另一端连接至第三节点n3。存储电容器Cst的一端连接至第一节点n1，存储电容器Cst的另一端连接至第二节点n2。有机发光二极管D的阳极连接至与驱动晶体管T2的另一端连接的第三节点n3，有机发光二极管D的阴极连接至第二电源线VSS，通过该第二电源线VSS提供低电势驱动电源Vss。随着包括在各个子像素内的发光层根据通过栅线SL1提供的栅信号和通过数据线DL1提供的数据信号而发光，具有这种子像素SP结构的有机发光显示面板可以显示图像。
现在将更详细地描述根据本发明示例实施例的显示设备。
『第一实施例』
图6是根据本发明第一示例实施例的时序驱动器的示意方框图。
如图6所示，时序驱动器TCN包括自动地生成频率的压控振荡器(VCO)150和通过利用VCO 150提供的频率来生成驱动信号的控制器160。VCO 150的输出频率Fout根据在时序驱动器TCN内生成的N个控制信号CS1～CSn改变。因此，VCO 150的输出频率FOUT由输入给VCO 150的电源电压VDD和VSS以及N个控制信号CS1～CSn改变。在当前的示例实施例中，VCO 150的输出电压Fout根据包括在时序驱动器TCN内的存储器单元130(例如，诸如EEPROM等的内部存储器)输出的N个控制信号CS1～CSn的组合而改变。N个控制信号CS1～CSn可以按照0和1比特的形式储存在存储器单元130内。
『第二实施例』
图7是根据本发明第二示例实施例的压控振荡器(VCO)的示意方框图。
如图7所示，时序驱动器TCN包括存储器单元130、VCO 150和控制器160。
VCO 150包括通过使用存储器单元130提供的N个控制信号CS1～CSn来控制压控振荡单元150c的频率转换器150a和150b。频率转换器150a和150b的电阻值根据N个控制信号CS1～CSn的组合而改变，压控振荡单元150c的输出频率Fout可以根据改变的电阻值而改变。
频率转换器150a和150b可以包括解码器单元150a和组合单元150b。解码器单元150a将存储器单元130输出的N个控制信号CS1～CSn转换成2N个控制信号CS1’～CSnN’。例如，当输入两个信号时，解码器单元150a输出四个信号，当输入三个信号时，解码器单元150a输出八个信号。组合单元150b对解码器单元150a输出的2N个控制信号CS1’～CSnN’进行组合，并将该组合提供给压控振荡单元150c。
组合单元150b包括：分别响应于解码器单元150a输出的2N个控制信号CS1’～CSnN’执行开关操作的2N个开关单元“开关<1>～开关<nN>”；和电阻值根据2N个开关单元“开关<1>～开关<nN>”的开关操作改变的电阻器单元R1～RnN。
电阻器单元R1～RnN包括串联形成的第一电阻器单元R1至第2N电阻器单元RnN，2N个开关单元“开关<1>～开关<nN>”并行连接至第一电阻器单元R1至第2N电阻器单元RnN。在电阻器单元R1～RnN之中，第一电阻器R1的一端和第2N电阻器RnN的一端连接至压控振荡单元150c。因此，电阻器单元R1～RnN的电阻值由分别响应于2N个控制信号CS1’～CSnN’执行开关操作的2N个开关单元“开关<1>～开关<nN>”改变，并且压控振荡单元150c的输出频率Fout根据所改变的电阻值而改变。
『第三实施例』
图8是根据本发明第三示例实施例的VCO的示意方框图。
如图8所示，时序驱动器TCN包括存储器单元130、VCO 150和控制器160。
VCO 150包括通过使用存储器单元130提供的N个控制信号CS1～CSn来控制压控振荡单元150c的频率转换器150a和150b。频率转换器150a和150b的电阻值根据N个控制信号CS1～CSn的组合而改变，压控振荡单元150c的输出频率Fout可以根据所改变的电阻值而改变。
频率转换器150a和150b可以包括解码器单元150a和组合单元150b。解码器单元150a将存储器单元130输出的N个控制信号CS1～CSn转换成2N个控制信号CS1’～CSnN’。组合单元150b对解码器单元150a输出的2N个控制信号CS1’～CSnN’进行组合，并将该组合提供给压控振荡单元150c。
组合单元150b包括：分别响应于解码器单元150a输出的2N个控制信号CS1’～CSnN’执行开关操作的2N个开关单元“开关<1>～开关<nN>”；和电阻值根据2N个开关单元“开关<1>～开关<nN>”的开关操作而改变的电阻器单元R1～RnN。
电阻器单元R1～RnN包括串联形成的第一电阻器单元R1至第2N电阻器单元RnN，2N个开关单元“开关<1>～开关<nN>”并行连接至第一电阻器单元R1至第2N电阻器单元RnN。在电阻器单元R1～RnN之中，第一电阻器R1的一端连接至第一电源线VDD，第2N电阻器RnN的一端连接至第二电源线VSS，连接第一电阻器R1至第2N电阻器RnN的节点中的至少一个连接至压控振荡单元150c。因此，2N个电阻器单元R1～RnN的电阻值由分别响应于2N个控制信号CS1’～CSnN’执行开关操作的2N个开关单元“开关<1>～开关<nN>”改变，并且压控振荡单元150c的输出频率Fout根据所改变的电阻值而改变。
若以类似于第二和第三示例实施例的方式配置包括在时序驱动器TCN内的单元，当输入0给第k个控制信号CSk’时，则第K个开关单元“开关<k>”可以将压控振荡单元150c输出的信号(电流或电压)传送给第K个电阻器Rk。如果输入1给第K个控制信号CSk’，则第K个开关单元“开关<k>”可以将压控振荡单元150c输出的信号(电流或电压)传送给与第K+1个电阻器Rk+1连接的节点。然而，以上仅为示例，关于0和1的响应设置可以根据2N个开关单元“开关<1>～开关<nN>”的特征改变。
同时，在本发明的第二和第三示例实施例中，用解码器单元150a来改变压控振荡单元150c输出的频率，但是本发明并不限制于此，也可以省去该解码器单元150a。在这种情况下，尽管设计组合单元150b为被输入存储器单元130提供的N个控制信号CS1～CSn，但是由于该组合单元150b可以改变电阻值，所以可以改变压控振荡单元150c的输出频率Fout。另外，在第二和第三示例实施例中，频率转换器150a和150b包括在VCO 150内，但是本发明并不限制于此，频率转换器150a和150b也可以配置在VCO 150的外部。另外，在第二和第三示例实施例中，改变包括在组合单元150b内的2N个电阻器单元R1～RnN的电阻值，但是也可以改变在改变频率时需要的电容器的电容值。
现在将描述根据本发明示例实施例的VCO的频率改变操作。
图9是用于解释VCO的频率改变操作的附图，图10图示VCO的输出频率。
如图9所示，根据所输入的电源电压和电阻值Rs中的改变，根据本发明示例实施例的VCO的输出频率Fout改变成第一频率F[1]至第N频率F[n]。即，通过由如图6至图8所示的存储器单元130提供的N个控制信号CS1～CSn，VCO可以改变频率。也就是，通过对储存在存储器单元130内的N个控制信号CS1～CSn进行组合，可以将VCO输出的频率不定地改变为在如图10所示的第一频率F[1]至第N频率F[n]的范围内。另外，当VCO输出的频率应当为第三频率，但却是第二频率时，通过对储存在存储器单元130内的N个控制信号CS1～CSn进行组合，可以执行频率校正，以输出所期望的频率。
如上所述，由于显示设备具有包含VCO的时序驱动器，其中该VCO配置为当输出的频率比在多种生成的频率之中设定的频率高或低时执行校正，所以不需要为了频率调整而对该时序驱动器进行重新设定或重新处理。此外，因为并不需要重新设定或重新处理该时序驱动器以输出所期望的频率，于是可以减少设定时间和处理单元的成本。另外，因为通过使用内部存储器单元可以生成各种频率，所以可以在时序驱动器中省去用于频率校正的输入级，因而可以缩小时序驱动器的尺寸。
尽管已经参考其多个说明性的实施例描述了实施例，应当理解本领域的技术人员可以设计的多种其它修改和实施例将落入在本发明原理的范围之内。更具体地，可以对说明书、附图和权利要求书的保护范围内的主题组合排列的组件部件和/或排列进行各种改变和修改。除了在组件部件和/或排列内的改变和修改之外，替代使用对于本领域的技术人员来说也将是显而易见的。

Claims (9)

1.一种显示设备，包括：
显示面板；
数据驱动器，提供数据信号给所述显示面板；
栅驱动器，提供栅信号给所述显示面板；和
时序驱动器，包括自动地生成频率的压控振荡器和通过利用所述压控振荡器提供的频率来生成驱动信号以便控制所述数据驱动器和所述栅驱动器的控制器，其中所述压控振荡器生成的频率根据包括在所述时序驱动器内的存储器单元输出的控制信号的组合而改变。
2.权利要求1的设备，其中所述时序驱动器包括频率转换器，所述频率转换器通过使用包括在所述时序驱动器内的所述存储器单元输出的控制信号来控制所述压控振荡器。
3.权利要求2的设备，其中所述频率转换器按照根据控制信号的组合而改变的电阻值来改变所述压控振荡器的输出频率。
4.权利要求2的设备，其中所述频率转换器包括：
解码器单元，将所述存储器单元输出的N个控制信号转换成2N个控制信号；和
组合单元，对所述解码器单元输出的2N个控制信号进行组合和将所述组合提供给所述压控振荡器。
5.权利要求4的设备，其中所述组合单元包括：
2N个开关单元，响应于所述解码器单元输出的2N个控制信号执行开关操作；和
电阻器单元，所述电阻器单元的电阻值根据所述2N个开关单元的开关操作改变。
6.权利要求5的设备，其中所述电阻器单元包括串联配置的第一至第2N电阻器，所述2N个开关单元并行连接至所述第一至第2N电阻器，并响应于所述解码器单元输出的2N个控制信号执行开关操作。
7.权利要求6的设备，其中所述电阻器单元的第一电阻器的一端和第2N电阻器的一端连接至所述压控振荡器。
8.权利要求6的设备，其中在所述电阻器单元中，第一电阻器的一端连接至第一电源线，第2N电阻器的一端连接至第二电源线，连接所述第一至第2N电阻器的节点中的至少一个连接至所述压控振荡器。
9.权利要求2的设备，其中所述频率转换器包括在所述压控振荡器内。
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