CN100470630C - 可移动液晶显示器及其驱动方法 - Google Patents
可移动液晶显示器及其驱动方法 Download PDFInfo
- Publication number
- CN100470630C CN100470630C CNB2006100830239A CN200610083023A CN100470630C CN 100470630 C CN100470630 C CN 100470630C CN B2006100830239 A CNB2006100830239 A CN B2006100830239A CN 200610083023 A CN200610083023 A CN 200610083023A CN 100470630 C CN100470630 C CN 100470630C
- Authority
- CN
- China
- Prior art keywords
- cycle
- liquid crystal
- output buffer
- crystal display
- horizontal synchronizing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
- 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
- G09G3/3685—Details of drivers for data electrodes
- G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
-
- 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
- G09G3/34—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
- G09G3/3655—Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors
-
- 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
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/027—Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
-
- 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
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0291—Details of output amplifiers or buffers arranged for use in a driving 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
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
-
- 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
- G09G3/3614—Control of polarity reversal in general
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Power Engineering (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
一种液晶显示器件,具有连接到液晶显示板的公共电极和数据线至少之一的输出缓冲器,以及通过划分为开周期和关周期来驱动输出缓冲器的电源开关。
Description
本发明要求于2005年6月30日在韩国提交的韩国专利申请No.P2005-0058126的优先权,该申请在此结合作为参考。
技术领域
本发明涉及一种液晶显示器件,更具体地,涉及一种减小功耗的可移动液晶显示器件及其驱动方法。
背景技术
液晶显示器件通过使用电场控制具有介电各向异性的液晶的光透射率来显示图像。为此,液晶显示器件包括具有像素矩阵的液晶显示板和用于驱动该液晶显示板的驱动电路。明确地,如图1所示的液晶显示器件包括:具有像素矩阵的液晶显示板10;用于驱动液晶显示板10的栅线GL的栅驱动器12;用于驱动液晶显示板10的数据线DL的数据驱动器14;和用于控制栅驱动器12和数据驱动器14的时序控制器16。
液晶显示板10包括由在栅线GL和数据线DL的每个交叉处形成的像素构成的像素矩阵。每个像素包括根据数据信号控制光透射率的液晶盒Clc,和用于驱动液晶盒Clc的薄膜晶体管TFT。薄膜晶体管TFT响应栅线GL的扫描信号接收并在液晶盒Clc中保持来自数据线DL的数据信号。液晶盒Clc根据数据信号改变液晶的排列状态以控制光透射率,由此实现灰度级。
栅驱动器12响应来自时序控制器16的控制信号将扫描信号顺序提供给栅线GL。数据驱动器14将来自时序控制器16的数字数据信号转换为模拟数据信号以提供给数据线DL。时序控制器16将控制信号提供给栅驱动器12和数据驱动器14并将数字数据提供给数据驱动器14。
具有上述特征的小的液晶显示器件主要用于可移动应用。然而,对于这种应用必须减小功耗。为此,如图2所示,液晶显示器件使用对于每条水平线反转液晶盒的极性的行反转方法。
如图3所示,当栅线由栅信号Vgate驱动时,行反转方法对于每个水平同步周期1H反转公共电压Vcom的极性,由此能够减小数据电压Vdata。然而,甚至使用行反转方法,由于公共电压Vcom的频率,功耗也相对较高。从而,需要可以减小功耗的方法。
发明内容
因此,本发明涉及一种可移动液晶显示器件及其驱动方法,其基本上避免了由于现有技术的限制和缺陷引起的一个或多个问题。
本发明的一个目的是提供一种适于减小功耗的可移动液晶显示器件及其驱动方法。
本发明另外的特征和优点将在下面的描述中提出,从描述中部分显而易见,或者可以从本发明的实施中了解。通过以下的描述及其权利要求以及所附附图中所指出的具体结构,可以实现和得到本发明的目的和其它优点。
为了实现这些目的和其他优点并根据本发明的目的,如这里具体和广义描述的,一种可移动液晶显示器件包括连接到液晶显示板的公共电极和数据线至少之一的输出缓冲器,和用于驱动输出缓冲器进入开周期和关周期的电源开关部分。
根据另一方面,一种液晶显示器件的驱动方法包括以下步骤:在第一周期中通过驱动连接到液晶显示板的公共电极和数据线至少之一的输出缓冲器来提供输出信号,以及在第二周期中关闭输出缓冲器。
应当理解,本发明之前的概括描述和下面的详细描述为示例性的和解释性的,并且意欲提供对本发明的进一步解释。
附图说明
结合在本发明中的所附附图用于提供对本发明的进一步理解,构成本申请的一部分,这些附图说明了本发明的实施例,并与说明书一起用于解释本发明的原理。在附图中:
图1所示为现有技术的液晶显示器件的框图;
图2所示为在现有技术的行反转方法中驱动的液晶盒极性的图;
图3所示为线反转驱动期间现有技术的栅线和公共电极的驱动波形图;
图4所示为根据本发明示例性实施方式的液晶显示器件的公共电压产生器和数据驱动器的电路图;以及
图5所示为图4所示的公共电压产生器和数据驱动器的示例性驱动波形图。
具体实施方式
现在将对本发明的优选实施方式进行详细描述,在所附附图中示出了这些实施方式。
图4所示为在根据本发明示例性实施方式在液晶显示器件中驱动电路(未示出)的数据驱动器20和公共电压产生器40。图5所示为图4所示的驱动电路的示例性驱动的波形图。
如图4所示,数据驱动器20将数据信号Vdata提供给液晶显示板的数据线,以及公共电压产生器40将高公共电压Vcom提供给液晶显示板的公共电极。数据驱动器20根据来自外部的供给信号和控制信号将数字数据转换为模拟数据信号,并将转换后的模拟数据信号提供给液晶显示板的数据线。为此,数据驱动器20包括逻辑电路部分22、数字模拟转换器(以下称为“DAC”)24、和输出缓冲器部分26。
逻辑电路部分22将从外部输入的数字数据顺序采样到锁存器(未示出),并将锁存后的数字数据提供给DAC 24。DAC 24利用伽玛电压将从逻辑电路部分22接收的数字数据转换为模拟数据信号,并将转换后的模拟数据信号提供给输出缓冲器部分26。
输出缓冲器部分26缓冲来自DAC 24的模拟数据信号并将缓冲后的模拟数据信号提供给液晶显示板的数据线。具体地,在输出缓冲器部分26中包括的多个输出缓冲器28的每一个连接到数据线。输出缓冲器28利用流过连接到第一高电势电压VDD1线的第一开关SW1的充电电流和流过连接到第一低电势电压VSS1线的第二开关SW2的放电电流在数据线中充入数据信号Vdata,使其接近于来自DAC 24的输入信号。输出缓冲器部分26进一步包括连接在接地电压GND线和输出缓冲器28的输出线之间的第三开关SW3。
输出缓冲器部分26利用第一和第二开关SW1和SW2将一个水平周期1H划分为输出缓冲器28的开周期和关周期。当输出缓冲器28通过第一和第二开关SW1和SW2接通时,输出缓冲器部分26利用充电和放电电流缓冲数据线中的数据信号Vdata。当数据信号Vdata被缓冲时,输出缓冲器部分26通过第一和第二开关SW1和SW2关闭输出缓冲器28。同时,第三开关SW3接通以使数据线接地。因此,输出缓冲器28的电流消耗降低,如图5所示,线反转数据信号Vdata的摆动宽度减小。从而,功耗减小。
如图5所示,开关SW1,SW2和SW3受栅使能信号GOE控制,该栅使能信号确定在栅驱动器中提供扫描信号SP的周期。通常,可移动液晶显示器件具有低分辨率以至于约100□的一个水平同步周期1H是足够的。从而,如图5所示,数据信号Vdata可以在输出缓冲器28的开周期中被缓冲。
如图4所示,公共电压产生器40包括用于产生高公共电压VcomH的第一公共电压产生器42、用于产生低公共电压VcomL的第二公共电压产生器44,和输出缓冲器部分45,其交替地缓冲由第一和第二公共电压产生器42和44提供给液晶显示板的公共电极的高公共电压VcomH和低公共电压VcomL。
输出缓冲器部分45包括分别连接到第一和第二公共电压产生器42和44的输出线的第一和第二输出缓冲器46和48。输出缓冲器部分45进一步包括用于切换第一和第二输出缓冲器46和48的输出的第三开关SW3和用于使公共电极接地的第四开关SW4。
第一输出缓冲器46利用流过连接到第二高电势电压VDD2线的第一开关SW1的充电电流和流过连接到第二低电势电压VSS2线的第二开关SW2的放电电流在公共电极中充入公共电压Vcom,使其接近于高公共电压VcomH。第二高电势电压VDD2可以等于或不等于第一高电势电压VDD1。类似地,第二低电势电压VSS2可以等于或不等于第一低电势电压VSS1。第二输出缓冲器48利用从第二高电势电压VDD2线流过第一开关SW1的充电电流和从第二低电势电压VSS2线流到第二开关SW2的放电电流在公共电极中充入公共电压Vcom,使其接近于低公共电压VcomL。第三开关SW3响应用于线反转的极性控制信号将第一输出缓冲器46的高公共电压VcomH和第二输出缓冲器48的低公共电压VcomL交替地提供给公共电极。
如图5所示,输出缓冲器部分45通过第一和第二开关SW1和SW2将一个水平周期1H划分为第一和第二输出缓冲器46和48的开周期和关周期。当第一和第二输出缓冲器46和48通过第一和第二开关SW1和SW2接通时,输出缓冲器部分45利用充电和放电电流通过第三开关SW3缓冲公共电极中的相应公共电压Vcom。如对于数据驱动器20所述,第一和第二开关SW1和SW2受栅使能信号GOE控制。当公共电压Vcom被缓冲时,输出缓冲器部分45通过第一和第二开关SW1和SW2关闭输出缓冲器28。同时,第四开关SW4接通以使公共电极接地。因此,第一和第二输出缓冲器46和48的电流消耗降低,如图5所示,行反转公共电压Vcom的摆动宽度减小,由此减小功耗。
在通过两条线或更多的反转方法驱动数据线和公共电极的情况下,其中水平同步周期的关周期具有与下一个水平同步周期相同的极性,仅公共电压产生器40的第一和第二输出缓冲器46和48和数据驱动器20的输出缓冲器28通过第一和第二开关SW1和SW2关闭,以使数据线和公共电极浮动。在该时间期间,数据驱动器20的第三开关SW3和公共电压产生器40的第四开关SW4断开。
在水平同步周期的关周期中,其中极性与下一个水平同步周期的极性相反,输出缓冲器28,46和48都通过第一和第二开关SW1和SW2关闭,并且数据驱动器20的第三开关SW3和公共电压产生器40的第四开关SW4接通以使数据线和公共电极接地。因此,甚至在两条线或更多的反转方法中,对于每两条线或更多反转的公共电压Vcom和数据信号Vdata的摆动宽度减小以减小功耗。
如上所述,根据本发明示例性实施方式的可移动液晶显示器件及其驱动方法将一个水平同步周期划分为输出缓冲器的开周期和关周期。数据信号和公共电压仅在输出缓冲器的开周期中输出,数据线和公共电极在关周期中接地。因此,输出缓冲的电流消耗以及公共电压和数据信号的摆动宽度减小,由此减小功耗。
此外,在水平同步周期中具有与下一个水平同步周期相同极性的输出缓冲器关周期期间,根据本发明示例性实施方式的可移动液晶显示器件及其驱动方法使数据线和公共电极浮动。在水平同步周期中具有与下一个水平同步周期不同极性的输出缓冲器关周期期间,数据线和公共电极接地。因此,即使在两条线或更多的反转方法中,公共电压和数据信号的摆动宽度和输出缓冲器的电流消耗减小,由此减小功耗。
对于本领域技术人员显而易见的是在不偏离本发明的精神或范围的情况下可以得到本发明的可移动液晶显示器件及其驱动方法的多种变形和变化。从而,本发明意欲覆盖这些变形和变化,只要它们在所附权利要求及其等同物的范围内。
Claims (11)
1、一种液晶显示器件,包括:
输出缓冲器,连接到液晶显示板的公共电极和数据线至少之一;以及
电源开关部分,用于驱动所述输出缓冲器进入开周期和关周期,
其中所述输出缓冲器包括输出线和接地开关,以使得所述输出线接地,
其中所述电源开关部分包括连接到高电势驱动电压线的第一电源开关,和连接到低电势驱动电压线的第二电源开关。
2、根据权利要求1所述的液晶显示器件,其特征在于,所述电源开关部分将一个水平同步周期划分为所述输出缓冲器提供输出信号的开周期和所述输出缓冲器关闭时的关周期。
3、根据权利要求2所述的液晶显示器件,其特征在于,所述接地开关在所述关周期中使所述输出缓冲器的输出线接地。
4、根据权利要求3所述的液晶显示器件,其特征在于,所述电源开关部分和接地开关受栅使能信号控制,所述栅使能信号确定扫描脉冲提供给所述液晶显示板的栅线的周期。
5、根据权利要求2所述的液晶显示器件,其特征在于,所述接地开关在提供具有与下一个水平同步周期相反极性的输出信号时的所述水平同步周期的关周期中使所述输出线接地。
6、根据权利要求2所述的液晶显示器件,其特征在于,所述接地开关在提供具有与下一个水平同步周期相同极性的输出信号时的所述水平同步周期的关周期中使所述输出线浮动。
7、一种液晶显示器件的驱动方法,包括以下步骤:
在第一周期中通过驱动连接到液晶显示板中公共电极和数据线至少之一的输出缓冲器来提供输出信号;以及
在第二周期中关闭所述输出缓冲器,
其中所述第二周期包括在所述第二周期中使所述输出缓冲器的输出线接地的步骤。
8、根据权利要求7所述的驱动方法,其特征在于,一个水平同步周期被划分为所述第一周期和所述第二周期。
9、根据权利要求7所述的驱动方法,其特征在于,所述第一和第二周期通过栅使能信号划分,所述栅使能信号确定扫描脉冲提供给液晶显示板的栅线的周期。
10、根据权利要求7所述的驱动方法,其特征在于,所述输出线仅在提供极性与下一个水平同步周期极性相反的输出信号时的水平同步周期的第二周期中接地。
11、根据权利要求7所述的驱动方法,其特征在于,所述输出线仅在提供极性与下一个水平同步周期极性相同的输出信号时的水平同步周期的第二周期中浮动。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020050058126 | 2005-06-30 | ||
KR1020050058126A KR101165842B1 (ko) | 2005-06-30 | 2005-06-30 | 모바일용 액정 표시 장치 및 그 구동 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1892782A CN1892782A (zh) | 2007-01-10 |
CN100470630C true CN100470630C (zh) | 2009-03-18 |
Family
ID=37588845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2006100830239A Expired - Fee Related CN100470630C (zh) | 2005-06-30 | 2006-05-25 | 可移动液晶显示器及其驱动方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7643000B2 (zh) |
KR (1) | KR101165842B1 (zh) |
CN (1) | CN100470630C (zh) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100795687B1 (ko) * | 2006-06-19 | 2008-01-21 | 삼성전자주식회사 | 소스 드라이버의 출력 회로 및 방법 |
KR100759697B1 (ko) * | 2006-09-18 | 2007-09-17 | 삼성에스디아이 주식회사 | 액정표시장치 및 그 구동방법 |
US20080174285A1 (en) * | 2007-01-22 | 2008-07-24 | Seiko Epson Corporation | Common electrode voltage generation circuit, display driver and electronic instrument |
KR20090050857A (ko) * | 2007-11-16 | 2009-05-20 | 삼성모바일디스플레이주식회사 | 액정표시장치 및 그 구동방법 |
KR101508719B1 (ko) * | 2008-10-06 | 2015-04-03 | 삼성디스플레이 주식회사 | 구동유닛 및 이를 갖는 표시장치 |
US8169425B2 (en) * | 2009-01-14 | 2012-05-01 | Himax Technologies Limited | Source driver adapted to a display panel |
US8717265B2 (en) * | 2009-04-20 | 2014-05-06 | Apple Inc. | Staggered line inversion and power reduction system and method for LCD panels |
CN102081245A (zh) * | 2009-11-30 | 2011-06-01 | 群康科技(深圳)有限公司 | 液晶显示装置 |
JP5734951B2 (ja) | 2010-03-03 | 2015-06-17 | シャープ株式会社 | 表示装置およびその駆動方法、ならびに液晶表示装置 |
US9478186B2 (en) * | 2010-10-28 | 2016-10-25 | Sharp Kabushiki Kaisha | Display device with idle periods for data signals |
TWI582743B (zh) | 2011-05-03 | 2017-05-11 | 矽工廠股份有限公司 | 用於顯示穩定的液晶面板驅動電路 |
US8593491B2 (en) * | 2011-05-24 | 2013-11-26 | Apple Inc. | Application of voltage to data lines during Vcom toggling |
CN103149719B (zh) * | 2011-12-06 | 2016-08-03 | 上海天马微电子有限公司 | 液晶显示面板及其驱动方法和液晶显示器 |
JP6134536B2 (ja) * | 2012-02-28 | 2017-05-24 | 株式会社メガチップス | 出力装置 |
CN102903720B (zh) * | 2012-09-29 | 2014-10-22 | 京东方科技集团股份有限公司 | 一种薄膜晶体管阵列基板及其液晶显示装置 |
KR102023947B1 (ko) * | 2012-12-31 | 2019-09-23 | 엘지디스플레이 주식회사 | 표시장치 |
CN104103246B (zh) * | 2013-04-12 | 2017-04-12 | 乐金显示有限公司 | 用于显示设备的驱动电路及其驱动方法 |
CN103472753A (zh) * | 2013-09-17 | 2013-12-25 | 京东方科技集团股份有限公司 | 控制信号发生电路和电路系统 |
JP6642973B2 (ja) * | 2015-03-26 | 2020-02-12 | ラピスセミコンダクタ株式会社 | 半導体装置および半導体装置の制御方法 |
TWI559290B (zh) * | 2015-06-17 | 2016-11-21 | 矽創電子股份有限公司 | 用於液晶顯示器之驅動方法及系統 |
US10311822B2 (en) * | 2016-08-23 | 2019-06-04 | Apple Inc. | Content dependent common voltage driver systems and methods |
KR102651807B1 (ko) * | 2016-09-30 | 2024-03-29 | 엘지디스플레이 주식회사 | 액정표시장치와 그 구동 방법 |
KR102658424B1 (ko) * | 2019-05-08 | 2024-04-19 | 삼성디스플레이 주식회사 | 표시 장치 및 그의 구동 방법 |
KR20230019352A (ko) * | 2021-07-30 | 2023-02-08 | 삼성디스플레이 주식회사 | 표시 장치 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW504598B (en) * | 1998-03-26 | 2002-10-01 | Toshiba Corp | Flat display apparatus |
JP2001004974A (ja) | 1999-06-18 | 2001-01-12 | Sanyo Electric Co Ltd | 液晶駆動回路 |
US7102608B2 (en) * | 2002-06-21 | 2006-09-05 | Himax Technologies, Inc. | Method and related apparatus for driving pixels located in a row of an LCD panel toward the same average voltage value |
JP3799308B2 (ja) * | 2002-08-02 | 2006-07-19 | Nec液晶テクノロジー株式会社 | 液晶表示装置 |
JP3687648B2 (ja) * | 2002-12-05 | 2005-08-24 | セイコーエプソン株式会社 | 電源供給方法及び電源回路 |
JP2005135031A (ja) * | 2003-10-28 | 2005-05-26 | Sanyo Electric Co Ltd | 電源回路 |
US20050088395A1 (en) * | 2003-10-28 | 2005-04-28 | Samsung Electronics Co., Ltd. | Common Voltage driver circuits and methods providing reduced power consumption for driving flat panel displays |
-
2005
- 2005-06-30 KR KR1020050058126A patent/KR101165842B1/ko active IP Right Grant
-
2006
- 2006-05-22 US US11/437,910 patent/US7643000B2/en not_active Expired - Fee Related
- 2006-05-25 CN CNB2006100830239A patent/CN100470630C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR20070002544A (ko) | 2007-01-05 |
KR101165842B1 (ko) | 2012-07-13 |
US7643000B2 (en) | 2010-01-05 |
CN1892782A (zh) | 2007-01-10 |
US20070001978A1 (en) | 2007-01-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN100470630C (zh) | 可移动液晶显示器及其驱动方法 | |
CN101206838B (zh) | 电泳显示器及其驱动方法 | |
TWI233082B (en) | Liquid crystal display and driving method of the same, and portable terminal | |
US7746308B2 (en) | Liquid crystal display and portable terminal having the same | |
CN100541588C (zh) | 液晶显示装置及其控制方法、以及移动终端 | |
CN100456352C (zh) | 用于驱动液晶显示器件的方法和装置 | |
US8674976B2 (en) | Liquid crystal display capable of reducing power consumption and method for driving the same | |
CN100533533C (zh) | 电平转换电路、显示装置和蜂窝终端装置 | |
JP4285386B2 (ja) | ソースドライバ、電気光学装置及び電子機器 | |
US7605790B2 (en) | Liquid crystal display device capable of reducing power consumption by charge sharing | |
EP1618546A2 (en) | Display system with frame buffer and power saving sequence | |
KR20030080353A (ko) | 액정표시장치 및 그 구동방법 | |
JPH1130974A (ja) | 液晶表示装置の駆動制御用半導体装置および液晶表示装置 | |
CN101826311A (zh) | 可加长充电时间的液晶显示装置及相关驱动方法 | |
JP2011085680A (ja) | 液晶表示装置、走査線駆動回路および電子機器 | |
CN101609637A (zh) | 驱动电路及显示装置 | |
KR100877456B1 (ko) | 표시 구동 방법, 표시 소자, 및 표시 장치 | |
US20030058207A1 (en) | Image display device and display driving method | |
US7999778B2 (en) | Apparatus and method for driving LCD | |
CN100570457C (zh) | 栅极驱动器、光电装置、电子设备以及驱动方法 | |
JP4082282B2 (ja) | 液晶表示装置および携帯端末 | |
KR101166829B1 (ko) | 액정 표시장치의 구동장치 및 구동방법 | |
JP4200709B2 (ja) | 表示駆動方法、表示素子、及び表示装置 | |
CN100583200C (zh) | 显示装置和便携式电话装置 | |
KR101352936B1 (ko) | 액정 표시 장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20210525 |