JP4794542B2 - 多等級電気レベル駆動装置 - Google Patents
多等級電気レベル駆動装置 Download PDFInfo
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- JP4794542B2 JP4794542B2 JP2007328298A JP2007328298A JP4794542B2 JP 4794542 B2 JP4794542 B2 JP 4794542B2 JP 2007328298 A JP2007328298 A JP 2007328298A JP 2007328298 A JP2007328298 A JP 2007328298A JP 4794542 B2 JP4794542 B2 JP 4794542B2
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- 239000003990 capacitor Substances 0.000 claims description 40
- 239000010409 thin film Substances 0.000 description 18
- 239000004973 liquid crystal related substance Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 230000005669 field effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000003071 parasitic effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000004397 blinking Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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
- 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
- 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
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices 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
- G09G2310/00—Command of the display device
- G09G2310/06—Details of flat display driving waveforms
-
- 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
- G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
-
- 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
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Computer Hardware Design (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Power Engineering (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal (AREA)
Description
電気レベルの飛躍変化△Vpが存在するため、液晶ディスプレイの明滅が引き起こされやすく、電気レベルの飛躍変化△Vpの値を小さくするために、従来技術において、通常、多等級電気レベルの方法が採用される。図3は走査ラインにおいて多等級電気レベルが採用された後の充電概略図である。走査ラインが高電気レベルから低電気レベルに変化する時、中間に中間電気レベル加えられ、高電気レベルから中間電気レベルまでの電気レベルの変化は比較的に小さいため、△Vp1も小さくする。この時、薄膜トランジスタはまだ遮断されていないため、データラインにおける電気レベルは薄膜トランジスタを介して、引き続いて画素へ充電し、画素における電気レベルがまた△Vを上昇させる。その後、走査ラインにおける電気レベルは中間電気レベルからまた負電気レベルになり、薄膜トランジスタを遮断させ、この時、画素両端には、同様に△Vp2の電気レベルの飛躍変化が生じる。従って、プロセス全体において、画素両端の電気レベルの飛躍変化は、△Vp =△Vp1−△V+△Vp2となる。これで分かるように、走査ラインが多等級電気レベルを採用した後、画素電気レベルの飛躍変化△Vpは小さくできる。
交流信号を入力するための交流信号入力端、高電気レベルを出力するための高電気レベル出力端及び中間電気レベルを出力するための中間電気レベル出力端を有する電気レベル変換器と、
制御信号を入力して前記高電気レベルと中間電気レベルに対して交替選択を行うための制御信号入力端と、選択された電気レベルを出力するための出力端とを有し、前記高電気レベル出力端と中間電気レベル出力端に連結されるスイッチセレクタと、を備える。
該多等級電気レベル駆動システムは、前記多等級電気レベル駆動装置の制御信号入力端に連結される制御信号源を更に備えることが望ましい。
多等級電気レベル駆動装置10は、電気レベル変換器11とスイッチセレクタ12を備える。その中に、電気レベル変換器11は、交流信号源20に連結される交流信号入力端113と、高電気レベルを出力するための高電気レベル出力端111及び中間電気レベルを出力するための中間電気レベル出力端112を有し、スイッチセレクタ12は、高電気レベル出力端111と中間電気レベル出力端112に連結される。具体的な作動プロセスは下記のようとなる。
電気レベル変換器11は、2本の並列分岐回路と、第3のダイオードD3と、第4のダイオードD4と、を備え、
分岐回路の両端は夫々交流信号入力端113とアースに連結され、その中に、1本の分岐回路に、第3のコンデンサC3と、負極が中間電気レベル出力端112に連結される第1のダイオードD1と、1端がアースに連結され、他端が第1のダイオードD1の負極に連結される第1のコンデンサC1と、が順次に直列連結され、もう1本の分岐回路に、第4のコンデンサC4と、負極が高電気レベル出力端111に連結される第2のダイオードD2と、1端がアースに連結され、他端が第2のダイオードD2の負極に連結される第2のコンデンサC2と、が順次に直列連結され、
第3のダイオードは、正極が中間電気レベル出力端112に連結され、負極が第2のダイオードD2の正極に連結され、
第4のダイオードは、負極が前記第1のダイオードD1の正極に連結され、正極が参考電気レベル入力端114を介して、参考電気レベル信号源30に連結される。
Claims (7)
- 交流信号を入力するための交流信号入力端、高電気レベルを出力するための高電気レベル出力端及び中間電気レベルを出力するための中間電気レベル出力端を有する電気レベル変換器と、
制御信号を入力して前記高電気レベルと中間電気レベルに対して交替選択を行うための制御信号入力端と、選択された電気レベルを出力するための出力端とを有し、前記高電気レベル出力端と中間電気レベル出力端に連結されるスイッチセレクタと、
を備え、
前記電気レベル変換器は、前記高電気レベル及び中間電気レベルの参考電気レベルを入力するための参考電気レベル入力端と、
2本の並列分岐回路と、第3のダイオードと、第4のダイオードと、
を備え、
前記分岐回路の両端が夫々前記交流信号入力端とアースに連結され、その中に、 1本の前記分岐回路に、第3のコンデンサと、その負極が前記中間電気レベル出力端に連結される第1のダイオードと、一端がアースに連結され、他端が第1のダイオードの負極に連結される第1のコンデンサと、が順次に直列連結され、
もう1本の前記分岐回路に、第4のコンデンサと、その負極が前記高電気レベルの出力端に連結される第2のダイオードと、一端がアースに連結され、他端が第2のダイオードの負極に連結される第2のコンデンサと、が順次に直列連結され、
前記第3のダイオードは、正極が前記中間電気レベルの出力端に連結され、負極が前記第2のダイオードの正極に連結され、
前記第4のダイオードは、負極が前記第1のダイオードの正極に連結され、正極が前記参考電気レベルの入力端に連結されること
を特徴とする電気レベル駆動装置。 - 前記スイッチセレクタは、第1のスイッチと、第2のスイッチと、第3のスイッチと、を備え、
前記第1、第2のスイッチの出力端が連結され、前記第1のスイッチの入力端が前記高電気レベルの出力端に連結され、前記第2のスイッチの入力端が前記中間電気レベルの出力端に連結され、
前記第3のスイッチの制御端が前記制御信号の入力端に連結され、入力端がアースに連結され、出力端が前記第1、第2のスイッチの制御端に連結されることを特徴とする請求項1に記載の電気レベル駆動装置。 - 前記第1のスイッチの入力端と制御端の間に、第1の抵抗が連結されることを特徴とする請求項2に記載の電気レベル駆動装置。
- 前記第3のスイッチの出力端は、直列に接続した第3の抵抗と第2の抵抗によって、前記第1のスイッチの制御端に連結されることを特徴とする請求項2に記載の電気レベル駆動装置。
- 請求項1に記載の電気レベル駆動装置と、
前記電気レベル駆動装置の交流信号入力端に連結される交流信号源とを備えることを特徴とする電気レベル駆動システム。 - 前記電気レベル駆動装置の参考電気レベルの入力端に連結される参考電気レベルの信号源を更に備えることを特徴とする請求項5に記載の電気レベル駆動システム。
- 前記電気レベル駆動装置の制御信号入力端に連結される制御信号源を更に備えることを特徴とする請求項5に記載の電気レベル駆動システム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200710099470A CN101312016B (zh) | 2007-05-22 | 2007-05-22 | 多级电平驱动装置 |
CN200710099470.8 | 2007-05-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008295012A JP2008295012A (ja) | 2008-12-04 |
JP4794542B2 true JP4794542B2 (ja) | 2011-10-19 |
Family
ID=40071944
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JP2007328298A Active JP4794542B2 (ja) | 2007-05-22 | 2007-12-20 | 多等級電気レベル駆動装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8232948B2 (ja) |
JP (1) | JP4794542B2 (ja) |
KR (1) | KR100910780B1 (ja) |
CN (1) | CN101312016B (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103939800A (zh) * | 2010-07-23 | 2014-07-23 | 北京京东方光电科技有限公司 | 发光二极管背光源、液晶显示器及驱动方法 |
TWM406327U (en) * | 2010-10-27 | 2011-06-21 | Aravision Inc | 3D LC lens driving circuit |
US9941813B2 (en) | 2013-03-14 | 2018-04-10 | Solaredge Technologies Ltd. | High frequency multi-level inverter |
CN103475341B (zh) * | 2013-09-16 | 2016-06-08 | 北京京东方光电科技有限公司 | 时钟信号生成方法及生成电路、栅极驱动电路 |
US9318974B2 (en) | 2014-03-26 | 2016-04-19 | Solaredge Technologies Ltd. | Multi-level inverter with flying capacitor topology |
CN104575435B (zh) * | 2015-02-05 | 2017-12-15 | 京东方科技集团股份有限公司 | 显示基板栅极线驱动方法及驱动单元、显示装置 |
CN104967306A (zh) * | 2015-06-10 | 2015-10-07 | 上海鼎讯电子有限公司 | 电压转换电路 |
CN105551448B (zh) * | 2016-02-19 | 2018-06-26 | 上海天马微电子有限公司 | 显示面板的驱动电路和驱动方法 |
CN105761701B (zh) | 2016-05-20 | 2018-10-30 | 深圳市华星光电技术有限公司 | 处理向液晶显示器提供的栅极电压信号的电路 |
CN108550352B (zh) * | 2018-07-26 | 2021-05-18 | 京东方科技集团股份有限公司 | 栅极电压控制电路、栅极驱动电路及显示装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60249191A (ja) | 1984-05-24 | 1985-12-09 | シチズン時計株式会社 | 表示駆動回路 |
JPH0799452B2 (ja) | 1989-04-25 | 1995-10-25 | シチズン時計株式会社 | 表示駆動回路 |
JPH04204689A (ja) * | 1990-11-30 | 1992-07-27 | Hitachi Ltd | 多階調用ドライバーとそれを用いた液晶表示装置 |
JP2715943B2 (ja) * | 1994-12-02 | 1998-02-18 | 日本電気株式会社 | 液晶表示装置の駆動回路 |
EP0880246A3 (en) * | 1997-05-15 | 1999-12-01 | Matsushita Electric Industrial Co., Ltd. | Compressed code decoding device and audio decoding device |
KR100700415B1 (ko) | 1998-09-19 | 2007-03-27 | 엘지.필립스 엘시디 주식회사 | 액티브 매트릭스 액정표시장치 |
JP3659250B2 (ja) * | 2002-07-11 | 2005-06-15 | セイコーエプソン株式会社 | 電気光学装置、電気光学装置の駆動装置、電気光学装置の駆動方法及び電子機器 |
JP2003215630A (ja) | 2002-09-24 | 2003-07-30 | Hitachi Ltd | 液晶表示装置 |
JP4462844B2 (ja) * | 2003-05-13 | 2010-05-12 | 日本電気株式会社 | 電源回路 |
KR100665326B1 (ko) | 2005-12-07 | 2007-01-09 | 삼성전기주식회사 | Lcd 구동 장치 |
-
2007
- 2007-05-22 CN CN200710099470A patent/CN101312016B/zh active Active
- 2007-12-18 US US11/958,517 patent/US8232948B2/en active Active
- 2007-12-20 JP JP2007328298A patent/JP4794542B2/ja active Active
- 2007-12-21 KR KR1020070135596A patent/KR100910780B1/ko active IP Right Grant
Also Published As
Publication number | Publication date |
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KR20080102941A (ko) | 2008-11-26 |
US8232948B2 (en) | 2012-07-31 |
CN101312016B (zh) | 2010-05-26 |
CN101312016A (zh) | 2008-11-26 |
KR100910780B1 (ko) | 2009-08-04 |
US20080291148A1 (en) | 2008-11-27 |
JP2008295012A (ja) | 2008-12-04 |
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