EP2022037B1 - Verfahren zur sequentiellen farbanzeige durch modulation von impulsen - Google Patents

Verfahren zur sequentiellen farbanzeige durch modulation von impulsen Download PDF

Info

Publication number
EP2022037B1
EP2022037B1 EP07729494A EP07729494A EP2022037B1 EP 2022037 B1 EP2022037 B1 EP 2022037B1 EP 07729494 A EP07729494 A EP 07729494A EP 07729494 A EP07729494 A EP 07729494A EP 2022037 B1 EP2022037 B1 EP 2022037B1
Authority
EP
European Patent Office
Prior art keywords
pij
image
primary
activation
pixel
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.)
Active
Application number
EP07729494A
Other languages
English (en)
French (fr)
Other versions
EP2022037A2 (de
Inventor
Patrick Morvan
Jonathan Kervec
Julien Thollot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
THOMSON LICENSING
Original Assignee
Thomson Licensing SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thomson Licensing SAS filed Critical Thomson Licensing SAS
Publication of EP2022037A2 publication Critical patent/EP2022037A2/de
Application granted granted Critical
Publication of EP2022037B1 publication Critical patent/EP2022037B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2014—Display of intermediate tones by modulation of the duration of a single pulse during which the logic level remains constant
    • 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
    • G09G3/3659—Control of matrices with row and column drivers using an active matrix the addressing of the pixel involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependant on signal of two 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
    • 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
    • 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
    • G09G2300/0814—Several active elements per pixel in active matrix panels used for selection purposes, e.g. logical AND for partial update
    • 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
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0235—Field-sequential colour display
    • 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
    • G09G2310/0243—Details of the generation of driving signals
    • G09G2310/0259—Details of the generation of driving signals with use of an analog or digital ramp generator in the column driver or in the pixel 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
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0261—Improving the quality of display appearance in the context of movement of objects on the screen or movement of the observer relative to the screen
    • 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
    • G09G3/3406—Control of illumination source
    • 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

Definitions

  • the invention relates to a method for displaying a sequence of color images using an imager having a two-dimensional array of activatable pixels; each of the images is decomposable into at least one series of at least three primary images of different primary colors; for displaying any color image of this sequence, the pixels of the three primary images of this series are successively displayed by modulating the activation duration of said corresponding pixels of the imager.
  • the documents US6392656 , US6972736 and US6756956 describe such a method.
  • the beginning of the activation of the pixels of each primary image generally occurs at the beginning of the display of this image; the time difference that is then generated between the display of these primary images generates color break-up defects.
  • An object of the invention is to limit this type of defect.
  • said relation is applicable for each of the images to be displayed of said sequence.
  • the invention applies to each of these series; the series may have identical or different durations.
  • the display of an image of this sequence is obtained by the successive display of three subframes of different primary colors, generally red, green and blue.
  • the activation phases of the pixels are generally positioned in the same way regardless of the primary image to be displayed, for example at the beginning of the subframe or in the middle of the subframe; the identical positioning of the activation phases implies the following relation: (d Off-12-Pij + d Off-23-Pij ) ⁇ [T R - (d 1 -Pij + d 2 - Pij + d 3-Pij )] / 2.
  • the distribution of the activation phases of the pixels in three successive sub-frames of the same series is tightened compared to the prior art: the periods of activating the pixels of the first primary image towards the end of the subframe of this first image, and, during the subframe of the third primary image, shifting the activation periods of the pixels of this third primary image. towards the beginning of the subframe of this third image.
  • pixel activation here induces the emission of this pixel (upstream of a liquid crystal cell for example) and can not, as in US6570554 , designate the activation of the backlight of a liquid crystal cell.
  • T S2 is the maximum permissible duration of activation of the pixels of said imager during the display of the second primary image, regardless of said pixel P ij , the relation is: (d Off-12-Pij + d Off-23-Pij + d 2-Pij ) ⁇ T S2 ; advantageously, said relation is applicable for each of the images to be displayed of said sequence.
  • all the activation pulses of the pixels preferably end at the end of this subframe, and during the subframe of the third image.
  • all the pixel activation pulses preferably all start at the beginning of this subframe.
  • d Off-12-Pij d Off-23-Pij ; this relation then applies to each pixel Pij of the color images of said sequence, for each series of at least three primary images intended to display each of these images.
  • This relation implies that, for each series, the pixel activation phases for the display of the second primary image are centered with respect to the activation phases of the pixels for the display of the first and third primary images of the pixels. this series.
  • This relation implies that, for each series, the activation phases of the pixels for the display of the second primary image are contiguous to the activation phase of the pixels for the display of the first or third primary image of this image. series.
  • the primary color associated with said second primary image is green; the other primary colors, that of the first image and that of the second image, are preferably red and blue; thus, according to the invention, it is the subframes red and blue which are close to the green subframe, to reduce, in particular, the defects of color break.
  • the subject of the invention is also an image display system comprising a matrix imager provided with a two-dimensional array of activatable pixels and means for activating said pixels that are adapted to apply the method according to the invention.
  • the activatable pixels of said imager are formed by electro-optical valves, and the system further comprises means for successively illuminating said imager with each primary color.
  • the imager is then illuminated by the corresponding primary color from the illumination means.
  • the duration of illumination of each primary color is then the maximum permissible duration of activation of the pixels of the imager during the display of the primary image corresponding to this primary color.
  • said illumination means comprise a light source emitting in said three primary colors, optical means for directing the light emitted by said source onto the electro-optical valve network of said imager and a colored wheel which is interposed on the path this light between said source and said imager and which comprises segments of color filters, each filter being adapted to transmit one of the different primary colors emitted by the source.
  • the rotation of the wheel coloring allows to illuminate successively the imager by each primary color.
  • T F of each image of this sequence is divided here into two series of three primary images; each series of three primary images corresponds to a rotation period T R of the colored wheel.
  • T R T S1 + T S2 + T S3
  • the input interface 6 delivers to the control means 5 series of three primary images; each primary image is output as a video signal for each pixel of that image to be displayed; with reference to the figure 3 during the display of a first primary image of a series, by means of the control means, the video signals for displaying pixels of the second pixel are loaded into the memories MA or MB of each pixel control circuit; primary image, which is to be displayed immediately after the first being displayed; for this loading, one proceeds for example by selecting each line of pixels of the imager and, a line being selected, using the access control for example W_MA of the memories MA, the access of the memories MA is opened each of the control circuits of the pixels of this line and, using the column electrodes X i , the values of the video data of the pixels of the corresponding line of the image to be displayed are addressed to these memories; when all the second primary image to be displayed is thus stored in the active matrix of the imager and the illumination duration T S1 in the first primary color has elapsed, using the SEL_MA_MB memory selection
  • each control circuit comparator C ij compares the signals V VIDEO and V RAMP , and delivers a logic signal V MIR ;
  • the third graph of the figure 4 gives the value of the V ITO potential applied to the transparent upper electrode of the electro-optical valves: this potential is here equal to V MIR-H .
  • the fourth graph of the figure 4 gives the voltage V LC applied across the optical valves, which is equal to V MIR - V ITO .
  • control method which has just been described makes it possible to substantially reduce the color-breaking defects for the video-sequence display.
  • a third embodiment of the method according to the invention will now be described, again for displaying a sequence of images using the same image display system.
  • the invention includes cases where the end or the beginning of these phases do not coincide, of the moment that the following relation is satisfied: (d Off-12-Pij + d Off-23-Pij ) ⁇ [T R - (d 1 -Pij + d 2 -Pij + d 3-Pij )] / 2. Note that this relationship is obviously satisfied in all the embodiments that have just been presented.
  • the invention has been described with reference to a decomposition of each image of a video sequence into two sets of three successive primary images of different primary colors; the invention also applies to cases of decomposition of each image into a single series of three primary images, or in addition to two sets of three primary images; the different series may have different durations.
  • each series has a number of primary images greater than three, as long as there are three successive in each series to apply the method according to the invention; by extension, among the primary colors, one can even count a color of white tint.
  • the invention has been described with reference to a projection image display system where the activatable pixels of the imager are liquid crystal valves; other activatable pixels can be used without departing from the invention, such as micromirror pixels (DMD) or LED pixels, especially when they are controllable in time modulation in an analog manner, as described for example in the document US6590549 .
  • micromirror pixels DMD
  • LED pixels especially when they are controllable in time modulation in an analog manner, as described for example in the document US6590549 .
  • micromirroirs are not controllable analogically.

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)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Endoscopes (AREA)

Claims (8)

  1. Verfahren zur Anzeige einer Sequenz von Farbbildern mit Hilfe eines Bildgebers (1) mit einem bidimensionalen Gitter von aktivierbaren Pixeln, bei dem zur Anzeige mindestens eines Farbbildes der Sequenz bei in mindestens eine Serie von drei aufeinander folgenden Primärbildern mit unterschiedlichen Primärfarben zerlegtem Bild die Pixel der drei Primärbilder der mindestens einen Serie durch Modulation der Dauer der Aktivierung der entsprechenden Pixel des Bildgebers angezeigt werden, dadurch gekennzeichnet, dass für jede Serie mit einer Dauer TR, wenn für jedes Pixel Pij des Farbbildes
    - d1-Pij, d2-Pij, d2-Pij als die Dauern der Aktivierung des Pixels für die Anzeige des ersten, des zweiten beziehungsweise des dritten Primärbilds der Reigenfolge definiert sind,
    - dOff-12-Pij als die Zeitspanne zwischen dem Ende tOff-1-Pij der Aktivierung des Pixels Pij zur Anzeige des ersten Primärbilds der Serie und dem Anfang tOn-2-Pij der Aktivierung desselben Pixels Pij zur Anzeige des zweiten Primärbildes derselben Serie definiert ist,
    - dOff-23-Pij als die Zeitspanne zwischen dem Ende tOff-2-Pij der Aktivierung des Pixels Pij zur Anzeige des zweiten Primärbilds der Serie und dem Anfang tOn-3-Pij der Aktivierung desselben Pixels Pij zur Anzeige des dritten Primärbildes derselben Serie definiert ist,
    - TS2 als die maximal zulässige Dauer der Aktivierung der Pixel des Bildgebers während der Anzeige des zweiten Primärbilds definiert ist,
    dann für jedes beliebige Pixel Pij des Bildgebers und für jede Serie sich folgende Beziehungen ergeben: d O ⁢ f ⁢ f - 12 - P ⁢ i ⁢ j + d O ⁢ f ⁢ f - 23 - P ⁢ i ⁢ j < T R - d 1 - P ⁢ i ⁢ j + d 2 - P ⁢ i ⁢ j + d 3 - P ⁢ i ⁢ j / 2
    Figure imgb0006
     d O ⁢ f ⁢ f - 12 - P ⁢ i ⁢ j + d O ⁢ f ⁢ f - 23 - P ⁢ i ⁢ j + d 2 - P ⁢ i ⁢ j ≤ T S ⁢ 2 .
    Figure imgb0007
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass sich ferner die Beziehung dOff-12-Pij = dOff-23-Pij ergibt.
  3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass sich ferner die Beziehungen dOff-12-Pij = 0 und/oder dOff-23 Pij = 0 ergeben.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die dem zweiten Primärbild zugeordnete Primärfarbe grün ist.
  5. System zur Anzeige von Bildern, umfassend einen Matrix-Bildgeber (1) mit einem bidimensionalen Gitter von aktivierbaren Pixeln und Mittel zur Aktivierung (5) der Pixel, dadurch gekennzeichnet, dass die Aktivierungsmittel geeignet sind, um das Verfahren nach einem der vorhergehenden Ansprüche anzuwenden.
  6. System nach Anspruch 5, bei dem die aktivierbaren Pixel des Bildgebers durch elektrooptische Ventile gebildet sind, dadurch gekennzeichnet, dass es ferner Mittel zur sukzessiven Beleuchtung des Bildgebers durch jede Primärfarbe umfasst.
  7. System nach Anspruch 6, dadurch gekennzeichnet, dass die Beleuchtungsmittel eine in den drei Primärfarben emittierende Lichtquelle (2), optische Mittel, um das von dieser Quelle emittierte Licht auf das Gitter von elektrooptischen Ventilen des Bildgebers zu richten, und ein Farbrad (3) umfassen, das auf dem Weg dieses Lichts zwischen der Quelle (2) und dem Bildgeber (1) angeordnet ist und Farbfiltersegmente (S1, S2, S3) umfasst, wobei jeder Filter geeignet ist, um eine der verschiedenen, von der Quelle (2) emittierten Primärfarben durchzulassen.
  8. System nach einem der Ansprüche 6 bis 7, dadurch gekennzeichnet, dass es ein Projektionsobjektiv (4) umfasst, das geeignet und positioniert ist, um das Bild des Bildgebers (1) auf einem Projektionsbereich zu realisieren.
EP07729494A 2006-05-30 2007-05-24 Verfahren zur sequentiellen farbanzeige durch modulation von impulsen Active EP2022037B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0604798A FR2901905A1 (fr) 2006-05-30 2006-05-30 Procede d'affichage sequentiel couleur par modulation de duree
PCT/EP2007/055065 WO2007137994A2 (fr) 2006-05-30 2007-05-24 Procede d'affichage sequentiel couleur par modulation de duree

Publications (2)

Publication Number Publication Date
EP2022037A2 EP2022037A2 (de) 2009-02-11
EP2022037B1 true EP2022037B1 (de) 2011-01-19

Family

ID=38001861

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07729494A Active EP2022037B1 (de) 2006-05-30 2007-05-24 Verfahren zur sequentiellen farbanzeige durch modulation von impulsen

Country Status (5)

Country Link
US (1) US8184133B2 (de)
EP (1) EP2022037B1 (de)
DE (1) DE602007012083D1 (de)
FR (1) FR2901905A1 (de)
WO (1) WO2007137994A2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006288612A (ja) * 2005-04-08 2006-10-26 Olympus Corp 画像表示装置
US10338677B2 (en) 2015-10-28 2019-07-02 Microsoft Technology Licensing, Llc Adjusting image frames based on tracking motion of eyes
US11216931B2 (en) * 2018-09-25 2022-01-04 Xi'an Novastar Tech Co., Ltd. Display device failure detection method, device and system
WO2023223745A1 (ja) * 2022-05-20 2023-11-23 ソニーグループ株式会社 半導体表示装置及び空間位相変調装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1054380A1 (de) * 1998-12-01 2000-11-22 Seiko Epson Corporation Farbanzeigevorrichtung und -verfahren
US20010026261A1 (en) * 1996-12-20 2001-10-04 Duke University Multiplexed display element sequential color LCD panel
US6573882B1 (en) * 1999-05-20 2003-06-03 Canon Kabushiki Kaisha Picture display method using liquid crystal device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6392620B1 (en) * 1998-11-06 2002-05-21 Canon Kabushiki Kaisha Display apparatus having a full-color display
US6831948B1 (en) * 1999-07-30 2004-12-14 Koninklijke Philips Electronics N.V. System and method for motion compensation of image planes in color sequential displays
JP3824459B2 (ja) * 1999-11-08 2006-09-20 富士通株式会社 液晶表示装置
US7027013B2 (en) * 2000-12-22 2006-04-11 Ifire Technology, Inc. Shared pixel electroluminescent display driver system
WO2003021566A1 (fr) * 2001-08-28 2003-03-13 Hunet Inc. Controleur pour afficheur a transistor en couches minces
JP4113042B2 (ja) * 2002-05-24 2008-07-02 シチズンホールディングス株式会社 表示装置およびカラー表示方法
US7164397B2 (en) * 2003-09-30 2007-01-16 Texas Instruments Incorporated Discrete light color processor
FR2884640A1 (fr) * 2005-04-15 2006-10-20 Thomson Licensing Sa Procede d'affichage d'une image video et panneau d'affichage mettant en oeuvre le procede
JP2009503617A (ja) * 2005-08-02 2009-01-29 ユニ−ピクセル・ディスプレイズ・インコーポレーテッド フィールドシーケンシャルカラーディスプレイシステムのカラー分裂アーチファクトを緩和するメカニズム
US7746294B2 (en) * 2006-04-14 2010-06-29 University Of Central Florida Research Foundation, Inc. Transflective liquid crystal display

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010026261A1 (en) * 1996-12-20 2001-10-04 Duke University Multiplexed display element sequential color LCD panel
EP1054380A1 (de) * 1998-12-01 2000-11-22 Seiko Epson Corporation Farbanzeigevorrichtung und -verfahren
US6573882B1 (en) * 1999-05-20 2003-06-03 Canon Kabushiki Kaisha Picture display method using liquid crystal device

Also Published As

Publication number Publication date
WO2007137994A2 (fr) 2007-12-06
DE602007012083D1 (de) 2011-03-03
EP2022037A2 (de) 2009-02-11
WO2007137994A3 (fr) 2008-06-19
US8184133B2 (en) 2012-05-22
FR2901905A1 (fr) 2007-12-07
US20100026613A1 (en) 2010-02-04

Similar Documents

Publication Publication Date Title
US7046221B1 (en) Increasing brightness in field-sequential color displays
EP0635819B1 (de) Verfahren und Einrichtung zur Steuerung einer Mikrospitzenanzeigevorrichtung
FR2884640A1 (fr) Procede d&#39;affichage d&#39;une image video et panneau d&#39;affichage mettant en oeuvre le procede
FR2890776A1 (fr) Dispositif d&#39;affichage et procede de pilotage de ce dernier
EP2022037B1 (de) Verfahren zur sequentiellen farbanzeige durch modulation von impulsen
FR2584845A1 (fr) Appareil a cristaux liquides et son procede de commande
EP3079142B1 (de) Bildanzeigeverfahren auf matrix-bildschirm
FR2864679A1 (fr) Procede et dispositif de pilotage d&#39;un affichage a cristaux liquides
FR2834814A1 (fr) Dispositif et procede pour piloter un afficheur a cristaux liquides
EP1774505B1 (de) Flüssigkristall-matrixanzeige
FR2880460A1 (fr) Procede et dispositif d&#39;affichage pour reduire les effets de flou
EP1958182B1 (de) Videosystem mit einer durch ein verbessertes adressierungsverfahren gesteuerten flussigkristallmatrixanzeige
EP0641475B1 (de) Darstellungsverfahren von verschiedenen grauwerten und system zur durchführung dieses verfahrens.
EP0887786A2 (de) Anzeigegerät mit einem optischen räumlichen Modulator
EP2444953B1 (de) Matrix-Anzeigevorrichtung für zwei verschmolzene Bilder
EP1958183B1 (de) Sequentielle farbbeleuchtungs-flüssigkristall-matrixanzeige
EP2097893B1 (de) Verfahren zum adressieren eines lcd-displays im farbsequentiellen modus
EP1481387B1 (de) Teilfeldverfahren zur anzeige eines videobildes mit helligkeitsabstufung auf einem digitalen anzeigegerät mit artefaktreduktion
JPH07212686A (ja) 階調表現方法
US20040155856A1 (en) Sequential color illumination in display systems employing light modulators
EP3482254A1 (de) Bilderzeugungsvorrichtung für eine head-up-anzeige und verfahren zur steuerung solch einer vorrichtung
EP0729279A2 (de) Monolichtventil-Farbprojektionsysteme
EP2703298A1 (de) Vorrichtung und Verfahren zur Stimulation eines optoelektronischen Sensors
CA2536216A1 (fr) Micro-ecran de visualisation a cristaux liquides et son procede de commande
US6320573B1 (en) Driving a memory display in a camera

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20081031

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

RIN1 Information on inventor provided before grant (corrected)

Inventor name: THOLLOT, JULIEN

Inventor name: KERVEC, JONATHAN

Inventor name: MORVAN, PATRICK

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20091015

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: THOMSON LICENSING

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 602007012083

Country of ref document: DE

REF Corresponds to:

Ref document number: 602007012083

Country of ref document: DE

Date of ref document: 20110303

Kind code of ref document: P

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602007012083

Country of ref document: DE

Effective date: 20110303

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20111020

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602007012083

Country of ref document: DE

Effective date: 20111020

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 602007012083

Country of ref document: DE

Representative=s name: DEHNS, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 602007012083

Country of ref document: DE

Representative=s name: DEHNS PATENT AND TRADEMARK ATTORNEYS, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 602007012083

Country of ref document: DE

Representative=s name: HOFSTETTER, SCHURACK & PARTNER PATENT- UND REC, DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 602007012083

Country of ref document: DE

Representative=s name: DEHNS, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 602007012083

Country of ref document: DE

Owner name: INTERDIGITAL CE PATENT HOLDINGS SAS, FR

Free format text: FORMER OWNER: THOMSON LICENSING, ISSY-LES-MOULINEAUX, FR

Ref country code: DE

Ref legal event code: R082

Ref document number: 602007012083

Country of ref document: DE

Representative=s name: DEHNS PATENT AND TRADEMARK ATTORNEYS, DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20190926 AND 20191002

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230511

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230523

Year of fee payment: 17

Ref country code: DE

Payment date: 20230530

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20230523

Year of fee payment: 17