CN101388191B - 显示器及其驱动器 - Google Patents
显示器及其驱动器 Download PDFInfo
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- CN101388191B CN101388191B CN2008100954885A CN200810095488A CN101388191B CN 101388191 B CN101388191 B CN 101388191B CN 2008100954885 A CN2008100954885 A CN 2008100954885A CN 200810095488 A CN200810095488 A CN 200810095488A CN 101388191 B CN101388191 B CN 101388191B
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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
- 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
-
- 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
- G09G3/3696—Generation of voltages supplied to electrode drivers
-
- 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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
本发明提供一种可编程数字/模拟转换器,其包括:一参考电压产生器,用于根据多个参考信号而各产生多个参考电压;灰阶参考电压产生器,其包括一电阻器串,此电阻器串包括用于提供多个电压的多个串联的电阻器;以及多个参考解码器,各由该电阻器串接收所述电压,且根据此所对应参考信号,从所述电压选择性地输出一参考电压;以及一数据解码器,其接收所述参考电压,用于根据一数据信号而选择性地输出一模拟电压。
Description
技术领域
本发明涉及一种显示器驱动器,特别涉及一种数字/模拟转换器。
背景技术
参考图4,其说明液晶显示器(LCD)面板的传统结构,其包括:一面板410、一显示器驱动器420、一栅极驱动器430、以及一X-板440,其具有计时控制器与灰阶电压产生器,用于将灰阶参考电压提供给源极驱动器420。
发明内容
本发明的一目的为,简化在此计时控制器与源极驱动器间的总线。
本发明的另一目的为,提供用于一LCD面板的一可编程规划的数字/模拟转换器。
因此,为了达成一或一些或所有上述目的,此转换器包括:一参考电压产生器,用于根据多个参考信号而各产生多个参考电压;该参考电压产生器,包括一电阻器串,此电阻器串包括用于提供多个电压的多个串联的电阻器;多个参考解码器,各由该电阻器串接收所述电压,且根据此所对应参考信号从所述电压选择性地输出一参考电压;以及一数据解码器,其接收所述参考电压,用于根据一数据信号选择性地输出一模拟电压。
本发明的一或一部份或所有所述与其它特性与优点,将由以下详细说明而对于熟习此技术人士为明显。其中,所显示与说明本发明的一较佳实施例,仅用于说明最适合此执行本发明的所述模式之一。如同可以理解,本发明可以有所述不同的实施例,且其若干细节可以各种明显观点修正,而均不会偏离本发明。因此,所述图式与说明的本质被认为是说明而非限制。
附图说明
图1说明本发明驱动***的一实施例;
图2说明本发明源极驱动***的一实施例;
图3为一方块图,其说明根据本发明的数字/模拟转换器;以及
图4说明传统的液晶显示器(LCD)面板。
附图符号说明
101计时控制器 102源极驱动器
103总线 201移位寄存器
202锁定器 203电平移位器
204数字/模拟转换器 301参考电压产生器
305参考解码器 306单元增益缓冲器
307数据解码器 308串联电阻器
310数据解码器 410面板
420显示器驱动器 430栅极驱动器
440X-板。
具体实施方式
参考图1,其为根据本发明的实施例用于显示器的一驱动***的一方块图。此驱动***包括:一计时控制器101、一源极驱动器102、以及连接介于此计时控制器101与此源极驱动器102间的一总线103。此总线103承载电力VDD/VSS、数据信号D、以及灰阶参考信号r。此计时控制器101经由此总线103将所述数据信号D与灰阶参考信号r输出至此源极驱动器102。此源极驱动器102接收所述灰阶参考信号r,用于将所述数据信号D解码成所述模拟驱动电压。所述灰阶参考信号r为数字式的,且可以依序地发出,以致于相较于现有技术可以减少总线的数目。
参考图2,其为源极驱动器的方块图,其包括:一移位寄存器201、一锁定器202、一电平移位器203、以及一数字/模拟转换器(DAC)204。此锁定器202包括多个内存单元。此移位寄存器201发出一控制信号,以使得各所述内存单元可以储存所述数据信号D。此电平移位器203调整此来自此锁定器202的所述数据信号D的电压电平。
此DAC 204接收所述灰阶参考信号r,而将来自此电平移位器203的所述数据信号D解码成所述模拟驱动电压。
参考图3,其为此数字/模拟转换器(DAC)的方块图。此DAC 204包括:一参考电压产生器301、所述参考解码器305、所述缓冲器306、以及一数据解码器307。此参考电压产生器301包括:一连接介于一高压电源VDD与一低压电源VSS间的一电阻器串,以及此电阻器串包括多个串联电阻器308,以对此参考解码器305产生多个参考电压V1-Vn。
所述参考解码器305为可编程规划,且由所述灰阶参考信号r所控制,其包括由此计时控制器101依序传送的所述灰阶参考信号r1-rn。各所述参考解码器305根据相对应的灰阶参考信号r、从此电阻器串选择一电压作为灰阶参考电压Vr,且将所产生的参考电压Vr输出至相对应的单元增益缓冲器306。
此数据解码器310藉由将所述数据信号D解码,而从所述灰阶参考电压Vr1-Vrn选择一电压作为驱动电压Vd。
熟习此技术人士了解,此在所述图式中所显示且在以上说明的本发明的此实施例仅为典范,且其用意并非为限制。
在以上所呈现本发明较佳实施例的描述,其目的在于说明与描述。其用意并非为穷尽或将本发明限制为此准确形式或所揭示典范实施例。因此,以上的说明应被认为是说明而非限制。明显地,许多修正与变化对于熟习此技术人士而言为明显。选择且说明所述实施例,以便最佳解释本发明的原理、以及其最佳模式的实际应用。因而,使得熟习此技术人士可以了解用于各种实施例的本发明,且具有各种修正而适合于所设想的特定使用或执行。其用意为,本发明的范围是由所附申请专利范围与其等同物所界定,其中,除非另外说明,所有名词的用意为其最广泛合理的意义。应了解,可以由熟习此技术人士在所述实施例中作各种变化,而不会偏离在以下申请专利范围所界定本发明的范围。此外,无论此元件或组件在以下申请专利范围是是否明确地提及,在本发明中并无元件与元件其用意为专为公用。
Claims (10)
1.一种显示器驱动器,包括:
一数字/模拟转换器,用于接收多个灰阶参考信号,
其中,该数字/模拟转换器包括:
一参考电压产生器,用于产生多个参考电压;
多个参考解码器,其各接收相对应的一灰阶参考信号,且根据相对应灰阶参考信号,从所述参考电压选择性地输出一灰阶参考电压;以及
一数据解码器,其接收所述灰阶参考电压,用于根据一数据信号选择性地输出一模拟电压。
2.如权利要求1所述的显示器驱动器,其中,该数字/模拟转换器还包括多个缓冲器,其各连接介于该相对应参考解码器与该数据解码器之间。
3.如权利要求1所述的显示器驱动器,其中,该参考电压产生器包括多个串联的电阻器。
4.如权利要求1所述的显示器驱动器,其中,所述灰阶参考信号为数字式的。
5.如权利要求1所述的显示器驱动器,其中,所述灰阶参考信号被依序接收。
6.如权利要求5所述的显示器驱动器,其中,所述灰阶参考信号经由一单线总线而被依序接收。
7.一种显示器,包括:
一计时控制器,用于输出多个数据信号与灰阶参考信号;以及
一显示器驱动器,其包括:
多个数字/模拟转换器,其各接收所述灰阶参考信号,用于产生模拟灰阶参考电压,以及接收所述数据信号之一,用于从所述灰阶参考电压选择性地输出一驱动电压,
其中,各所述数字/模拟转换器包括:
一参考电压产生器,用于产生多个参考电压;
多个参考解码器,其各接收相对应的一灰阶参考信号,且根据该相对应灰阶参考信号,从所述参考电压选择性地输出一灰阶参考电压;以及
一数据解码器,其接收所述灰阶参考电压,用于根据所述数据信号之一,选择性地输出一模拟电压。
8.如权利要求7所述的显示器,其中,所述灰阶参考信号为数字式的。
9.如权利要求7所述的显示器,其中,所述灰阶参考信号被依序接收。
10.如权利要求9所述的显示器,其中,所述灰阶参考信号经由一单线总线而被依序接收。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/852,331 | 2007-09-10 | ||
US11/852,331 US20090066675A1 (en) | 2007-09-10 | 2007-09-10 | Display driver and digital to analog converter thereof |
Publications (2)
Publication Number | Publication Date |
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CN101388191A CN101388191A (zh) | 2009-03-18 |
CN101388191B true CN101388191B (zh) | 2010-11-10 |
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CN2008100954885A Expired - Fee Related CN101388191B (zh) | 2007-09-10 | 2008-04-24 | 显示器及其驱动器 |
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US (1) | US20090066675A1 (zh) |
CN (1) | CN101388191B (zh) |
TW (1) | TWI348829B (zh) |
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KR20200122456A (ko) * | 2019-04-17 | 2020-10-28 | 삼성디스플레이 주식회사 | 복수의 데이터 드라이버들을 포함하는 표시 장치 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1811537A (zh) * | 2005-01-25 | 2006-08-02 | 三星电子株式会社 | 伽马校正器件和方法、以及包括伽马校正器件的显示装置 |
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US4257098A (en) * | 1978-10-30 | 1981-03-17 | Phillips Petroleum Company | Computer to recording medium interface |
US8072394B2 (en) * | 2007-06-01 | 2011-12-06 | National Semiconductor Corporation | Video display driver with data enable learning |
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2007
- 2007-09-10 US US11/852,331 patent/US20090066675A1/en not_active Abandoned
- 2007-11-09 TW TW096142302A patent/TWI348829B/zh not_active IP Right Cessation
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- 2008-04-24 CN CN2008100954885A patent/CN101388191B/zh not_active Expired - Fee Related
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CN1811537A (zh) * | 2005-01-25 | 2006-08-02 | 三星电子株式会社 | 伽马校正器件和方法、以及包括伽马校正器件的显示装置 |
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Publication number | Publication date |
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TW200913505A (en) | 2009-03-16 |
CN101388191A (zh) | 2009-03-18 |
TWI348829B (en) | 2011-09-11 |
US20090066675A1 (en) | 2009-03-12 |
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