JP2012225983A - Control method of electro-optical device, controller of electro-optical device, electro-optical device, and electronic apparatus - Google Patents
Control method of electro-optical device, controller of electro-optical device, electro-optical device, and electronic apparatus Download PDFInfo
- Publication number
- JP2012225983A JP2012225983A JP2011090914A JP2011090914A JP2012225983A JP 2012225983 A JP2012225983 A JP 2012225983A JP 2011090914 A JP2011090914 A JP 2011090914A JP 2011090914 A JP2011090914 A JP 2011090914A JP 2012225983 A JP2012225983 A JP 2012225983A
- Authority
- JP
- Japan
- Prior art keywords
- gradation
- potential
- region
- pixel
- pixel electrode
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000008859 change Effects 0.000 claims description 11
- 239000000382 optic material Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 description 38
- 239000000758 substrate Substances 0.000 description 16
- 206010047571 Visual impairment Diseases 0.000 description 14
- 239000003094 microcapsule Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 12
- 239000003990 capacitor Substances 0.000 description 6
- 239000002612 dispersion medium Substances 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- -1 alicyclic hydrocarbons Chemical class 0.000 description 4
- 239000000049 pigment Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000007822 coupling agent Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 235000014692 zinc oxide Nutrition 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- LTEQMZWBSYACLV-UHFFFAOYSA-N Hexylbenzene Chemical compound CCCCCCC1=CC=CC=C1 LTEQMZWBSYACLV-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- UZILCZKGXMQEQR-UHFFFAOYSA-N decyl-Benzene Chemical compound CCCCCCCCCCC1=CC=CC=C1 UZILCZKGXMQEQR-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 229910003437 indium oxide Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- MCVUKOYZUCWLQQ-UHFFFAOYSA-N tridecylbenzene Chemical compound CCCCCCCCCCCCCC1=CC=CC=C1 MCVUKOYZUCWLQQ-UHFFFAOYSA-N 0.000 description 2
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- FWLHAQYOFMQTHQ-UHFFFAOYSA-N 2-N-[8-[[8-(4-aminoanilino)-10-phenylphenazin-10-ium-2-yl]amino]-10-phenylphenazin-10-ium-2-yl]-8-N,10-diphenylphenazin-10-ium-2,8-diamine hydroxy-oxido-dioxochromium Chemical compound O[Cr]([O-])(=O)=O.O[Cr]([O-])(=O)=O.O[Cr]([O-])(=O)=O.Nc1ccc(Nc2ccc3nc4ccc(Nc5ccc6nc7ccc(Nc8ccc9nc%10ccc(Nc%11ccccc%11)cc%10[n+](-c%10ccccc%10)c9c8)cc7[n+](-c7ccccc7)c6c5)cc4[n+](-c4ccccc4)c3c2)cc1 FWLHAQYOFMQTHQ-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 229920000084 Gum arabic Polymers 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 241000978776 Senegalia senegal Species 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 235000010489 acacia gum Nutrition 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000005456 alcohol based solvent Substances 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- KWKXNDCHNDYVRT-UHFFFAOYSA-N dodecylbenzene Chemical compound CCCCCCCCCCCCC1=CC=CC=C1 KWKXNDCHNDYVRT-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- SJCKRGFTWFGHGZ-UHFFFAOYSA-N magnesium silver Chemical compound [Mg].[Ag] SJCKRGFTWFGHGZ-UHFFFAOYSA-N 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- GYNNXHKOJHMOHS-UHFFFAOYSA-N methyl-cycloheptane Natural products CC1CCCCCC1 GYNNXHKOJHMOHS-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- LIXVMPBOGDCSRM-UHFFFAOYSA-N nonylbenzene Chemical compound CCCCCCCCCC1=CC=CC=C1 LIXVMPBOGDCSRM-UHFFFAOYSA-N 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- VXNSQGRKHCZUSU-UHFFFAOYSA-N octylbenzene Chemical compound [CH2]CCCCCCCC1=CC=CC=C1 VXNSQGRKHCZUSU-UHFFFAOYSA-N 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920001483 poly(ethyl methacrylate) polymer Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- JZALLXAUNPOCEU-UHFFFAOYSA-N tetradecylbenzene Chemical compound CCCCCCCCCCCCCCC1=CC=CC=C1 JZALLXAUNPOCEU-UHFFFAOYSA-N 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
本発明は、例えば電気泳動表示装置等の電気光学装置の制御方法、電気光学装置の制御装置、電気光学装置、及び電子機器の技術分野に関する。 The present invention relates to a control method for an electro-optical device such as an electrophoretic display device, a control device for the electro-optical device, an electro-optical device, and an electronic device.
この種の電気光学装置の一例として、電気泳動粒子を含む電気泳動素子を挟んで対向する画素電極及び対向電極間に電圧を印加して、例えば黒色粒子及び白色粒子等の電気泳動粒子を移動させることで表示部に画像を表示する電気泳動表示装置がある（例えば特許文献１及び２参照）。電気泳動素子は、例えば、複数の電気泳動粒子を夫々含む複数のマイクロカプセルから構成され、画素電極及び対向電極間に、樹脂等からなる接着剤によって固定される。なお、対向電極は、共通電極と呼ばれることもある。 As an example of this type of electro-optical device, a voltage is applied between a pixel electrode and an opposing electrode that are opposed to each other with an electrophoretic element including electrophoretic particles interposed therebetween, and electrophoretic particles such as black particles and white particles are moved. Thus, there is an electrophoretic display device that displays an image on a display unit (see, for example, Patent Documents 1 and 2). The electrophoretic element is composed of, for example, a plurality of microcapsules each including a plurality of electrophoretic particles, and is fixed between the pixel electrode and the counter electrode by an adhesive made of resin or the like. The counter electrode is sometimes called a common electrode.
このような電気泳動表示装置では、表示部に表示されている画像を書き換える際、画像が部分的にしか変化しない場合には、変化する部分に対応する画素のみの画素電極及び対向電極間に電圧を印加することにより、画像を部分的に書き換える駆動方法（以下「部分書き換え駆動」と適宜称する）が採用されることがある。このような部分書き換え駆動が採用された電気泳動表示装置では、例えば、表示部に表示される画像のうち黒色で表示される黒画像部分と白色で表示される白画像部分との境界部が滲んだように表示されてしまうおそれがある、言い換えれば、黒画像部分の輪郭部が白画像部分側に広がったように（或いは膨らんだように）表示されてしまうおそれがあることが知られている（例えば特許文献２参照）。このような境界部の滲みが発生すると、黒画像部分に対応する画素のみに電圧を印加することにより、表示部に表示される画像を全白画像に書き換えた場合、境界部の滲みが残像として残ってしまう、言い換えれば、表示されていた黒画像部分の輪郭部に沿った残像が発生してしまうおそれがある。なお、以下では、このような輪郭部に沿った残像が発生する現象、或いは、このような輪郭部に沿った残像そのものを「輪郭残像」と適宜称する。例えば特許文献２には、表示部に表示された画像を部分書き換え駆動により全白画像に書き換える（即ち、黒画像部分を消去する）際、黒画像部分に対応する画素に加えて、黒画像部分の輪郭部に対応する画素と隣り合って配置され白色を表示する画素にも電圧を印加することにより、輪郭残像を消去する技術が開示されている。 In such an electrophoretic display device, when the image displayed on the display unit is rewritten, if the image changes only partially, a voltage is applied between the pixel electrode and the counter electrode of only the pixel corresponding to the changed portion. In some cases, a driving method in which an image is partially rewritten by applying (hereinafter referred to as “partial rewriting driving” as appropriate) may be employed. In the electrophoretic display device adopting such partial rewriting drive, for example, a boundary portion between a black image portion displayed in black and a white image portion displayed in white in an image displayed on the display portion is blurred. In other words, it is known that the black image portion may be displayed as if the outline portion of the black image portion is expanded (or swelled) toward the white image portion. (For example, refer to Patent Document 2). When such blurring of the boundary portion occurs, when the image displayed on the display portion is rewritten to an all-white image by applying a voltage only to the pixels corresponding to the black image portion, the blurring of the boundary portion becomes an afterimage. In other words, there is a possibility that an afterimage along the contour of the black image portion that has been displayed may occur. Hereinafter, a phenomenon in which such an afterimage along the contour portion occurs, or an afterimage itself along such a contour portion is appropriately referred to as a “contour afterimage”. For example, in Patent Document 2, when an image displayed on a display unit is rewritten to an all white image by partial rewriting driving (that is, a black image portion is erased), in addition to pixels corresponding to the black image portion, a black image portion A technique for erasing a contour afterimage by applying a voltage to a pixel that is arranged adjacent to a pixel corresponding to the contour portion and displays white is disclosed.
しかしながら、前述した例えば特許文献２に開示された技術によれば、輪郭残像を消去できるが、前述したような境界部の滲みの発生を抑制できないという技術的問題点がある。 However, according to the technique disclosed in Patent Document 2, for example, the afterimage can be erased, but there is a technical problem in that the occurrence of blurring at the boundary as described above cannot be suppressed.
本発明は、例えば前述した問題点に鑑みなされたものであり、表示部に表示される画像における境界部の滲みの発生を抑制でき、高品質な画像を表示可能な電気光学装置の制御方法、電気光学装置の制御装置、電気光学装置、及び電子機器を提供することを課題とする。 The present invention has been made in view of the above-described problems, for example, and can control the occurrence of blurring at the boundary portion in the image displayed on the display unit, and a control method for an electro-optical device capable of displaying a high-quality image, It is an object to provide a control device for an electro-optical device, an electro-optical device, and an electronic apparatus.
本発明に係る電気光学装置の制御方法は上記課題を解決するために、互いに交差する複数の走査線及び複数のデータ線の交差に対応して設けられ、互いに対向する画素電極及び対向電極間に電気光学物質を夫々有する複数の画素を有する表示部と、該表示部に画像データに応じた画像を表示させるために、前記複数の画素の各々の前記画素電極に前記画像データに応じたデータ電位を所定のフレーム期間中に供給する電位供給を複数回行う駆動部とを備えた電気光学装置を制御する制御方法であって、前記表示部に表示されている画像を書き換える画像書き換えの際、前記フレーム期間中に、前記表示部における表示すべき階調が第１階調から該第１階調と異なる第２階調へ変化することとなる領域である第１領域に対応する前記画素の前記画素電極に前記データ電位として前記第２階調に応じた第２階調電位を供給し、前記表示部における表示すべき階調が前記第２階調から前記第１階調へ変化することとなる領域である第２領域に対応する前記画素の前記画素電極に前記データ電位として前記第１階調に応じた第１階調電位を供給し、前記表示部における表示すべき階調が前記第１階調のままで変化しない領域である第３領域及び前記表示部における表示すべき階調が前記第２階調のままで変化しない領域である第４領域の各々に対応する前記画素の前記画素電極に前記対向電極の電位と同一の電位を供給するように、前記駆動部を制御する第１制御工程と、前記画像書き換えの際、前記フレーム期間中に、前記表示部における前記第３領域のうち前記第１領域に隣り合うとともに前記第１領域を所定幅で少なくとも部分的に取り囲む領域である第５領域に対応する前記画素の前記画素電極に前記データ電位として前記第１階調電位を供給するように、前記駆動部を制御する第２制御工程とを含む。 In order to solve the above problems, a control method for an electro-optical device according to the present invention is provided corresponding to the intersection of a plurality of scanning lines and a plurality of data lines intersecting each other, and between a pixel electrode and a counter electrode facing each other. A display unit having a plurality of pixels each including an electro-optic material, and a data potential corresponding to the image data on each pixel electrode of the plurality of pixels in order to display an image corresponding to the image data on the display unit A control method for controlling an electro-optical device including a drive unit that supplies a plurality of potentials for supplying a predetermined number of times during a predetermined frame period, wherein the image displayed on the display unit is rewritten when the image is rewritten. During the frame period, the gray level to be displayed on the display unit is changed from the first gray level to the second gray level different from the first gray level. Supplying a second gradation potential corresponding to the second gradation as the data potential to the element electrode, and changing a gradation to be displayed on the display unit from the second gradation to the first gradation; A first gradation potential corresponding to the first gradation is supplied as the data potential to the pixel electrode of the pixel corresponding to the second area which is a region, and the gradation to be displayed on the display unit is the first gradation. The pixel of the pixel corresponding to each of a third region that is a region that remains unchanged at one gradation and a fourth region that is a region where the gradation to be displayed on the display unit remains unchanged as the second gradation. A first control step for controlling the drive unit to supply the same potential as the potential of the counter electrode to the pixel electrode; and the third region in the display unit during the frame rewriting during the image rewriting. And adjacent to the first region The driving unit is configured to supply the first gradation potential as the data potential to the pixel electrode of the pixel corresponding to a fifth region that is a region at least partially surrounding the first region with a predetermined width. A second control step of controlling.
本発明に係る電気光学装置の制御方法によって制御される電気光学装置は、例えばアクティブマトリクス駆動方式の電気泳動表示装置などであり、複数の走査線と複数のデータ線との交差に対応して例えばマトリクス状に配列された複数の画素を有する表示部と、各画素の画素電極に画像データに応じたデータ電位を供給する駆動部とを備える。駆動部が、所定のフレーム期間中に、複数の画素の各々における画素電極に画像データに応じたデータ電位を供給する（具体的には、所定のフレーム期間中に、複数の走査線を所定の順番で１回ずつ選択するとともに、該選択した走査線に対応する画素における画素電極にデータ電位を複数のデータ線を介して供給する）電位供給（言い換えれば、所定のフレーム期間中に画像データに応じたデータ電位を複数の画素の各々の画素電極に書き込む書き込み動作）を複数回行うことにより、表示部に画像データに応じた画像が表示される。即ち、複数の画素の各々の画素電極に所定のフレーム期間を周期としてデータ電位が複数回書き込まれることにより、表示部に画像データに応じた画像が表示される。ここで、本発明に係る「フレーム期間」は、複数の走査線を所定の順番で１回ずつ選択する期間として予め定められた期間である。つまり、連続する複数のフレーム期間の各々において、複数の画素の各々における画素電極にデータ電位を供給する電位供給が駆動部によって１回ずつ行われることにより表示部に画像データに応じた画像が表示される。 The electro-optical device controlled by the control method of the electro-optical device according to the present invention is, for example, an active matrix drive type electrophoretic display device or the like, and corresponds to the intersection of a plurality of scanning lines and a plurality of data lines, for example. A display unit having a plurality of pixels arranged in a matrix and a drive unit for supplying a data potential corresponding to image data to the pixel electrode of each pixel are provided. A driving unit supplies a data potential corresponding to image data to a pixel electrode in each of a plurality of pixels during a predetermined frame period (specifically, a plurality of scanning lines are set to a predetermined number during a predetermined frame period). The selection is performed once in order, and the data potential is supplied to the pixel electrode in the pixel corresponding to the selected scanning line via a plurality of data lines. In other words, the potential is supplied to the image data during a predetermined frame period. An image corresponding to the image data is displayed on the display unit by performing a write operation of writing the corresponding data potential to each pixel electrode of the plurality of pixels a plurality of times. That is, an image corresponding to image data is displayed on the display unit by writing the data potential to the pixel electrode of each of a plurality of pixels a plurality of times with a predetermined frame period as a cycle. Here, the “frame period” according to the present invention is a period set in advance as a period for selecting a plurality of scanning lines once in a predetermined order. That is, in each of a plurality of consecutive frame periods, the potential supply for supplying the data potential to the pixel electrode in each of the plurality of pixels is performed once by the drive unit, whereby an image corresponding to the image data is displayed on the display unit. Is done.
本発明に係る電気光学装置の制御方法によれば、表示部に表示されている画像（例えば、白色及び黒色の２階調からなる２階調画像）を書き換える画像書き換えの際、前述した複数回の電位供給として、第１制御工程及び第２制御工程が行われる。 According to the control method of the electro-optical device according to the present invention, when the image is rewritten to rewrite an image displayed on the display unit (for example, a two-gradation image composed of two gradations of white and black), the above-described multiple times are performed. As the potential supply, the first control process and the second control process are performed.
第１制御工程は、フレーム期間において、表示すべき階調が第１階調（例えば白色）から第２階調（例えば黒色）へ変化することとなる第１領域に対応する画素の画素電極にデータ電位として第２階調に応じた第２階調電位（例えば、対向電極の電位よりも高い高電位、具体的には、例えば＋１５ボルト）を供給し、表示すべき階調が第２階調（例えば黒色）から第１階調（例えば白色）へ変化することとなる第２領域に対応する画素の画素電極にデータ電位として第１階調に応じた第１階調電位（例えば、対向電極の電位よりも低い低電位、具体的には、例えば−１５ボルト）を供給し、表示すべき階調が変化しない第３及び第４領域の各々に対応する画素の画素電極に対向電極の電位と同一の電位（例えば０ボルト）を供給するように、駆動部を制御する。よって、第１制御工程では、画像書き換えの際、画像が部分的にしか変化しない場合には、変化する部分（即ち、第１及び第２領域）に対応する画素のみにおける画素電極及び対向電極間に電圧が印加され、画像が部分的に書き換えられる。この際、変化しない部分（即ち、第３及び第４領域）に対応する画素の画素電極には対向電極の電位と同一の電位が供給されているため、画素電極及び対向電極間に電圧が印加されず、画像は変化しない。ここで、「対向電極の電位と同一の電位」とは、厳密に等しい電位のみを指す趣旨ではなく、僅かに異なる電位であることを含む。例えば、対向電極電位が、フィードスルーによる画素電極電位の変動を考慮して、第３、第４領域の画素電極に供給される電位とは異なる値とされている場合においても、第３、第４領域の画素電極に供給される電位と対向電極の電位とが同一であるとみなす。 In the first control step, in the frame period, the gradation to be displayed is applied to the pixel electrode of the pixel corresponding to the first region in which the first gradation (for example, white) is changed to the second gradation (for example, black). A second gradation potential corresponding to the second gradation (for example, a higher potential than the potential of the counter electrode, specifically, for example, +15 volts) is supplied as the data potential, and the gradation to be displayed is the second floor. A first gradation potential corresponding to the first gradation (for example, opposite) is applied to the pixel electrode of the pixel corresponding to the second region that changes from the tone (for example, black) to the first gradation (for example, white). A low potential lower than the potential of the electrode, specifically, for example, −15 volts) is supplied, and the counter electrode is connected to the pixel electrode of the pixel corresponding to each of the third and fourth regions where the gradation to be displayed does not change. To supply the same potential as the potential (for example, 0 volts), To control the moving parts. Therefore, in the first control step, when the image is rewritten only partially when the image is rewritten, between the pixel electrode and the counter electrode only in the pixel corresponding to the changed portion (that is, the first and second regions). A voltage is applied to and the image is partially rewritten. At this time, since the same potential as the potential of the counter electrode is supplied to the pixel electrode of the pixel corresponding to the portion that does not change (that is, the third and fourth regions), a voltage is applied between the pixel electrode and the counter electrode. Not changed. Here, the “potential that is the same as the potential of the counter electrode” does not mean only a strictly equal potential but includes a slightly different potential. For example, even when the counter electrode potential is a value different from the potential supplied to the pixel electrodes in the third and fourth regions in consideration of fluctuations in the pixel electrode potential due to feedthrough, It is assumed that the potential supplied to the pixel electrodes in the four regions and the potential of the counter electrode are the same.
第２制御工程は、フレーム期間において、表示すべき階調が第１階調（例えば白色）のままで変化しない第３領域のうち、表示すべき階調が第１階調（例えば白色）から第２階調（例えば黒色）へ変化することとなる第１領域に隣り合うとともに該第１領域を所定幅（例えば一画素の大きさに対応する幅）で少なくとも部分的に取り囲む領域である第５領域に対応する画素の画素電極にデータ電位として第１階調電位（例えば、対向電極の電位よりも低い低電位、具体的には、例えば−１５ボルト）を供給するように、駆動部を制御する。よって、第２制御工程では、画像書き換えの際、第５領域に対応する画素の画素電極及び対向電極間に第１階調電位（例えば−１５ボルト）と対向電極の電位（例えば０ボルト）との電位差に応じた電圧が印加される。なお、本発明に係る「所定幅」は、例えば一画素の大きさに対応する幅や二画素の大きさに対応する幅などであり、第１領域の縁から、第３領域に対応する画素のうち第１領域に対応する画素からの電気的な悪影響を受けない画素までの長さとして設定される。 In the second control step, the gradation to be displayed is changed from the first gradation (for example, white) in the third region in which the gradation to be displayed remains unchanged at the first gradation (for example, white) in the frame period. A first region that is adjacent to a first region that changes to a second gradation (for example, black) and at least partially surrounds the first region with a predetermined width (for example, a width corresponding to the size of one pixel). The drive unit is set so that a first gradation potential (for example, a low potential lower than the potential of the counter electrode, specifically, for example, −15 volts) is supplied as a data potential to the pixel electrode of the pixel corresponding to the five regions. Control. Therefore, in the second control step, when the image is rewritten, the first gradation potential (for example, −15 volts) and the potential of the counter electrode (for example, 0 volt) are provided between the pixel electrode and the counter electrode of the pixel corresponding to the fifth region. A voltage corresponding to the potential difference is applied. The “predetermined width” according to the present invention is, for example, a width corresponding to the size of one pixel or a width corresponding to the size of two pixels, and the pixels corresponding to the third region from the edge of the first region. Is set as the length from the pixel corresponding to the first region to the pixel that is not adversely affected electrically.
よって、表示すべき階調が第１階調（例えば白色）のままで変化しない第３領域のうち、表示すべき階調が第１階調（例えば白色）から第２階調（例えば黒色）へ変化することとなる第１領域に隣り合うとともに該第１領域を少なくとも部分的に取り囲む領域である第５領域に対応する画素における画素電極及び対向電極間に第１階調に応じた電圧を印加することができ、第５領域に対応する画素に第１階調（例えば白色）を確実に表示させることができる。したがって、表示部に表示される画像のうち第１階調で表示される第１階調画像（例えば白画像）と第２階調で表示される第２階調画像（例えば黒画像）との境界部の滲みの発生を抑制でき、ひいては、輪郭残像の発生も抑制できる。 Therefore, in the third region where the gradation to be displayed remains the first gradation (for example, white) and does not change, the gradation to be displayed is from the first gradation (for example, white) to the second gradation (for example, black). A voltage corresponding to the first gradation is applied between the pixel electrode and the counter electrode in the pixel corresponding to the fifth region that is adjacent to the first region and changes to at least partially surround the first region. The first gradation (for example, white) can be reliably displayed on the pixel corresponding to the fifth region. Therefore, among the images displayed on the display unit, a first gradation image (for example, a white image) displayed at the first gradation and a second gradation image (for example, a black image) displayed at the second gradation. Occurrence of blurring at the boundary can be suppressed, and as a result, generation of an afterimage can be suppressed.
以上説明したように、本発明に係る電気光学装置によれば、表示部に表示される画像における境界部の滲みの発生を抑制でき、ひいては、輪郭残像の発生を抑制できる。この結果、高品位な画像を表示することが可能となる。 As described above, according to the electro-optical device according to the present invention, it is possible to suppress the occurrence of blurring at the boundary portion in the image displayed on the display unit, and thus, it is possible to suppress the occurrence of the contour afterimage. As a result, a high quality image can be displayed.
本発明に係る電気光学装置の制御方法の一態様では、前記第２制御工程は、前記複数回の電位供給のうち後半の電位供給の少なくとも一の電位供給として行われる。 In one aspect of the control method of the electro-optical device according to the invention, the second control step is performed as at least one potential supply of the latter half of the plurality of potential supplies.
この態様によれば、第２制御工程は、複数回の電位供給のうち後半の少なくとも一の電位供給（典型的には、最終回の電位供給であり、最終回の電位供給が、全画素に基準電位ＧＮＤを書き込んで残留電荷を抜く「ディスチャージ」に相当する場合には最終回の一つ前の電位供給）として行われるので、表示部に表示される画像における境界部の滲みの発生をより確実に抑制できる。 According to this aspect, the second control step includes at least one potential supply in the latter half of the plurality of potential supplies (typically, the last potential supply, and the last potential supply is applied to all pixels. In the case of “discharge” in which the reference potential GND is written to remove residual charges, this is performed as a potential supply immediately before the last time). It can be reliably suppressed.
本発明に係る電気光学装置の制御方法の他の態様では、前記第２制御工程は、前記第１領域に対応する前記画素の前記画素電極に前記データ電位として前記第２階調電位を供給し、前記第２領域に対応する前記画素の前記画素電極に前記データ電位として前記第１階調電位を供給するように、前記駆動部を制御する。 In another aspect of the control method of the electro-optical device according to the invention, the second control step supplies the second gradation potential as the data potential to the pixel electrode of the pixel corresponding to the first region. The driving unit is controlled to supply the first gradation potential as the data potential to the pixel electrode of the pixel corresponding to the second region.
この態様によれば、画像書き換えの際、表示すべき階調が変化することとなる画素（言い換えれば、階調を変化させるべき画素）における画素電極及び対向電極間に第１階調又は第２階調に応じた電圧をより長い時間印加でき、階調を変化させるべき画素の階調をより確実に変化させることができる。よって、よりくっきりとした画像を表示部に表示させることができる。更に、各画素についてＤＣバランス比（即ち、画素電極及び対向電極間に第１階調に応じた電圧が印加される時間と、画素電極及び対向電極間に第２階調に応じた電圧が印加される時間との比）が崩れてしまうのを抑制或いは防止できる。即ち、各画素について、画素電極及び対向電極間に第１階調に応じた電圧が印加される時間と第２階調に応じた電圧が印加される時間との差を小さくすることができる。 According to this aspect, at the time of image rewriting, the first gradation or the second gradation is provided between the pixel electrode and the counter electrode in the pixel whose gradation to be displayed changes (in other words, the pixel whose gradation is to be changed). The voltage corresponding to the gradation can be applied for a longer time, and the gradation of the pixel whose gradation should be changed can be changed more reliably. Therefore, a clearer image can be displayed on the display unit. Further, a DC balance ratio is applied to each pixel (that is, a voltage corresponding to the first gradation is applied between the pixel electrode and the counter electrode, and a voltage corresponding to the second gradation is applied between the pixel electrode and the counter electrode. It is possible to suppress or prevent the ratio from being lost). That is, for each pixel, the difference between the time during which the voltage corresponding to the first gradation is applied between the pixel electrode and the counter electrode and the time during which the voltage according to the second gradation is applied can be reduced.
本発明に係る電気光学装置の制御装置は上記課題を解決するために、互いに交差する複数の走査線及び複数のデータ線の交差に対応して設けられ、互いに対向する画素電極及び対向電極間に電気光学物質を夫々有する複数の画素を有する表示部と、該表示部に画像データに応じた画像を表示させるために、前記複数の画素の各々における前記画素電極に前記画像データに応じたデータ電位を所定のフレーム期間中に供給する電位供給を複数回行う駆動部とを備えた電気光学装置を制御する制御装置であって、前記表示部に表示されている画像を書き換える画像書き換えの際、前記フレーム期間中に、前記表示部における表示すべき階調が第１階調から該第１階調と異なる第２階調へ変化することとなる領域である第１領域に対応する前記画素の前記画素電極に前記データ電位として前記第２階調に応じた第２階調電位を供給し、前記表示部における表示すべき階調が前記第２階調から前記第１階調へ変化することとなる領域である第２領域に対応する前記画素の前記画素電極に前記データ電位として前記第１階調に応じた第１階調電位を供給し、前記表示部における表示すべき階調が前記第１階調のままで変化しない領域である第３領域及び前記表示部における表示すべき階調が前記第２階調のままで変化しない領域である第４領域の各々に対応する前記画素の前記画素電極に前記対向電極の電位と同一の電位を供給するように、前記駆動部を制御する第１制御手段と、前記画像書き換えの際、前記フレーム期間中に、前記表示部における前記第３領域のうち前記第１領域に隣り合うとともに前記第１領域を少なくとも部分的に取り囲む領域である第５領域に対応する前記画素の前記画素電極に前記データ電位として前記第１階調電位を供給するように、前記駆動部を制御する第２制御手段とを備える。 In order to solve the above problems, a control device for an electro-optical device according to the present invention is provided corresponding to the intersection of a plurality of scanning lines and a plurality of data lines intersecting each other, and between a pixel electrode and a counter electrode facing each other. A display unit having a plurality of pixels each having an electro-optic material, and a data potential corresponding to the image data on the pixel electrode in each of the plurality of pixels in order to display an image corresponding to the image data on the display unit A control unit that controls the electro-optical device including a drive unit that supplies a plurality of potentials during a predetermined frame period, and when rewriting an image displayed on the display unit, The pixel corresponding to the first region, which is a region in which the gradation to be displayed on the display unit changes from the first gradation to a second gradation different from the first gradation during the frame period. A second gradation potential corresponding to the second gradation is supplied as the data potential to the pixel electrode, and a gradation to be displayed on the display unit changes from the second gradation to the first gradation. A first gradation potential corresponding to the first gradation is supplied as the data potential to the pixel electrode of the pixel corresponding to the second region which is a region to be, and the gradation to be displayed on the display unit is The pixel corresponding to each of a third region that is a region that does not change with the first gradation and a fourth region that is a region where the gradation to be displayed on the display portion does not change with the second gradation remains. A first control unit that controls the driving unit to supply the same potential as the potential of the counter electrode to the pixel electrode; and the third control unit in the display unit during the frame period during the image rewriting. Adjacent to the first region of the region And a first control unit configured to control the driving unit to supply the first gradation potential as the data potential to the pixel electrode of the pixel corresponding to the fifth region which is a region at least partially surrounding the first region. 2 control means.
本発明に係る電気光学装置の制御装置によれば、前述した本発明に係る電気光学装置の制御方法と同様に、電気光学装置において、表示部に表示される画像における境界部の滲みの発生を抑制でき、ひいては、輪郭残像の発生を抑制できる。 According to the control apparatus for an electro-optical device according to the present invention, in the electro-optical device, the occurrence of blurring of the boundary portion in the image displayed on the display unit is performed, as in the above-described control method for the electro-optical device according to the present invention. It is possible to suppress the occurrence of a contour afterimage.
なお、本発明に係る電気光学装置の制御装置においても、前述した本発明に係る電気光学装置の制御方法における各種態様と同様の各種態様を採ることが可能である。 The electro-optical device control apparatus according to the present invention can also adopt various aspects similar to the various aspects of the electro-optical device control method according to the present invention described above.
本発明に係る電気光学装置は上記課題を解決するために、前述した本発明に係る電気光学装置の制御装置（但し、その各種態様も含む）を備える。 In order to solve the above problems, an electro-optical device according to the present invention includes the above-described electro-optical device control device according to the present invention (including various aspects thereof).
本発明に係る電気光学装置によれば、前述した本発明に係る電気光学装置の制御装置を備えるので、表示部に表示される画像における境界部の滲みの発生を抑制でき、ひいては、輪郭残像の発生を抑制できる。 According to the electro-optical device according to the present invention, since the control device for the electro-optical device according to the present invention described above is provided, it is possible to suppress the occurrence of blurring at the boundary portion in the image displayed on the display unit, and as a result Generation can be suppressed.
本発明に係る電子機器は上記課題を解決するために、前述した本発明に係る電気光学装置（但し、その各種態様も含む）を備える。 In order to solve the above problems, an electronic apparatus according to the present invention includes the above-described electro-optical device according to the present invention (including various aspects thereof).
本発明に係る電子機器によれば、前述した本発明に係る電気光学装置を備えるので、高品質な画像を表示することが可能な、例えば、腕時計、電子ペーパー、電子ノート、携帯電話、携帯用オーディオ機器などの各種電子機器を実現できる。 The electronic apparatus according to the present invention includes the above-described electro-optical device according to the present invention, so that a high-quality image can be displayed, for example, a wristwatch, electronic paper, an electronic notebook, a mobile phone, and a portable device. Various electronic devices such as audio devices can be realized.
本発明の作用及び他の利得は次に説明する発明を実施するための形態から明らかにされる。 The effect | action and other gain of this invention are clarified from the form for implementing invention demonstrated below.
以下では、本発明の実施形態について図を参照しつつ説明する。以下の実施形態では、本発明に係る電気光学装置の一例である電気泳動表示装置を例にとる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, an electrophoretic display device, which is an example of an electro-optical device according to the invention, is taken as an example.
＜第１実施形態＞
第１実施形態に係る電気泳動表示装置について、図１から図７を参照して説明する。
<First Embodiment>
The electrophoretic display device according to the first embodiment will be described with reference to FIGS.
まず、本実施形態に係る電気泳動表示装置の全体構成について、図１及び図２を参照して説明する。 First, the overall configuration of the electrophoretic display device according to the present embodiment will be described with reference to FIGS. 1 and 2.
図１は、本実施形態に係る電気泳動表示装置の全体構成を示すブロック図である。 FIG. 1 is a block diagram showing the overall configuration of the electrophoretic display device according to this embodiment.
図１において、本実施形態に係る電気泳動表示装置１は、アクティブマトリクス駆動方式の電気泳動表示装置であり、表示部３と、コントローラー１０と、走査線駆動回路６０と、データ線駆動回路７０と、共通電位供給回路２２０とを備えている。なお、コントローラー１０が本発明に係る「電気光学装置の制御装置」の一例である。また、走査線駆動回路６０及びデータ線駆動回路７０が本発明に係る「駆動部」の一例を構成する。 In FIG. 1, an electrophoretic display device 1 according to this embodiment is an active matrix drive type electrophoretic display device, and includes a display unit 3, a controller 10, a scanning line driving circuit 60, a data line driving circuit 70, and the like. And a common potential supply circuit 220. The controller 10 is an example of an “electro-optical device control device” according to the present invention. The scanning line driving circuit 60 and the data line driving circuit 70 constitute an example of the “driving unit” according to the present invention.
表示部３には、ｍ行×ｎ列分の画素２０がマトリクス状（二次元平面的）に配列されている。また、表示部３には、ｍ本の走査線４０（即ち、走査線Ｙ１、Ｙ２、…、Ｙｍ）と、ｎ本のデータ線５０（即ち、データ線Ｘ１、Ｘ２、…、Ｘｎ）とが互いに交差するように設けられている。具体的には、ｍ本の走査線４０は、行方向（即ち、Ｘ方向）に延在し、ｎ本のデータ線５０は、列方向（即ち、Ｙ方向）に延在している。ｍ本の走査線４０とｎ本のデータ線５０との交差に対応して画素２０が配置されている。 In the display unit 3, m rows × n columns of pixels 20 are arranged in a matrix (in a two-dimensional plane). The display unit 3 includes m scanning lines 40 (that is, scanning lines Y1, Y2,..., Ym) and n data lines 50 (that is, data lines X1, X2,..., Xn). It is provided so as to cross each other. Specifically, the m scanning lines 40 extend in the row direction (that is, the X direction), and the n data lines 50 extend in the column direction (that is, the Y direction). The pixels 20 are arranged corresponding to the intersections of the m scanning lines 40 and the n data lines 50.
コントローラー１０は、走査線駆動回路６０、データ線駆動回路７０及び共通電位供給回路２２０の動作を制御する。コントローラー１０は、例えば、クロック信号、スタートパルス等のタイミング信号を各回路に供給する。 The controller 10 controls operations of the scanning line driving circuit 60, the data line driving circuit 70, and the common potential supply circuit 220. The controller 10 supplies timing signals such as a clock signal and a start pulse to each circuit, for example.
走査線駆動回路６０は、コントローラー１０による制御下で、所定のフレーム期間中に、走査線Ｙ１、Ｙ２、…、Ｙｍの各々に走査信号をパルス的に順次供給する。 The scanning line driving circuit 60 sequentially supplies a scanning signal in a pulsed manner to each of the scanning lines Y1, Y2,..., Ym during a predetermined frame period under the control of the controller 10.
データ線駆動回路７０は、コントローラー１０による制御下で、データ線Ｘ１、Ｘ２、…、Ｘｎにデータ電位を供給する。データ電位は、基準電位ＧＮＤ（例えば０ボルト）、高電位ＶＨ（例えば＋１５ボルト）又は低電位ＶＬ（例えば−１５ボルト）のいずれかの電位をとる。なお、後述するように、本実施形態では、前述した部分書き換え駆動が採用されている。また、低電位ＶＬが本発明に係る「第１階調電位」の一例であり、高電位ＶＨが本発明に係る「第２階調電位」の一例である。 The data line driving circuit 70 supplies a data potential to the data lines X1, X2,..., Xn under the control of the controller 10. The data potential is any one of a reference potential GND (for example, 0 volt), a high potential VH (for example, +15 volt), or a low potential VL (for example, -15 volt). As will be described later, in the present embodiment, the above-described partial rewrite drive is employed. The low potential VL is an example of the “first gradation potential” according to the present invention, and the high potential VH is an example of the “second gradation potential” according to the present invention.
共通電位供給回路２２０は、共通電位線９３に共通電位Ｖｃｏｍ（本実施形態では、基準電位ＧＮＤと同一の電位）を供給する。なお、共通電位Ｖｃｏｍは、共通電位Ｖｃｏｍが供給された対向電極２２と基準電位ＧＮＤが供給された画素電極２１との間に電圧が実質的に生じない範囲内で、基準電位ＧＮＤとは異なる電位であってもよい。例えば、共通電位Ｖｃｏｍが、フィードスルーによる画素電極２１の電位の変動を考慮して、画素電極２１に供給される基準電位ＧＮＤとは異なる値とされていてもよく、この場合であっても、本明細書では、共通電位Ｖｃｏｍと基準電位ＧＮＤとが同一であるとみなす。ここで、フィードスルーとは、走査線４０に走査信号が供給され、データ線５０を介して画素電極２１に電位が供給された後に、走査線４０への走査信号の供給が終了した際（例えば走査線４０の電位が低下した際）、画素電極２１の電位が、走査線４０との間の寄生容量に起因して変動する（例えば走査線４０の電位低下とともに低下する）現象をいう。共通電位Ｖｃｏｍは、フィードスルーにより画素電極２１の電位が低下することを予め想定して、画素電極２１に供給される基準電位ＧＮＤより僅かに低い値とされることがあるが、この場合も共通電位Ｖｃｏｍと基準電位ＧＮＤとが同電位であるとみなす。 The common potential supply circuit 220 supplies a common potential Vcom (in this embodiment, the same potential as the reference potential GND) to the common potential line 93. Note that the common potential Vcom is a potential different from the reference potential GND within a range in which no voltage is substantially generated between the counter electrode 22 supplied with the common potential Vcom and the pixel electrode 21 supplied with the reference potential GND. It may be. For example, the common potential Vcom may be a value different from the reference potential GND supplied to the pixel electrode 21 in consideration of fluctuations in the potential of the pixel electrode 21 due to feedthrough. In this specification, it is assumed that the common potential Vcom and the reference potential GND are the same. Here, the feed-through means that when the scanning signal is supplied to the scanning line 40 after the scanning signal is supplied to the scanning line 40 and the potential is supplied to the pixel electrode 21 via the data line 50 (for example, This refers to a phenomenon in which the potential of the pixel electrode 21 fluctuates due to parasitic capacitance with the scanning line 40 (for example, decreases with a decrease in the potential of the scanning line 40). The common potential Vcom may have a value slightly lower than the reference potential GND supplied to the pixel electrode 21 on the assumption that the potential of the pixel electrode 21 is lowered by feedthrough in advance. The potential Vcom and the reference potential GND are considered to be the same potential.
なお、コントローラー１０、走査線駆動回路６０、データ線駆動回路７０及び共通電位供給回路２２０には、各種の信号が入出力されるが、本実施形態と特に関係のないものについては説明を省略する。 Note that various signals are input to and output from the controller 10, the scanning line driving circuit 60, the data line driving circuit 70, and the common potential supply circuit 220, but descriptions of those that are not particularly related to the present embodiment are omitted. .
図２は、画素２０の電気的な構成を示す等価回路図である。 FIG. 2 is an equivalent circuit diagram illustrating an electrical configuration of the pixel 20.
図２において、画素２０は、画素スイッチング用トランジスター２４と、画素電極２１と、対向電極２２と、電気泳動素子２３と、保持容量２７とを備えている。 In FIG. 2, the pixel 20 includes a pixel switching transistor 24, a pixel electrode 21, a counter electrode 22, an electrophoretic element 23, and a storage capacitor 27.
画素スイッチング用トランジスター２４は、例えばＮ型トランジスターで構成されている。画素スイッチング用トランジスター２４は、そのゲートが走査線４０に電気的に接続されており、そのソースがデータ線５０に電気的に接続されており、そのドレインが画素電極２１及び保持容量２７に電気的に接続されている。画素スイッチング用トランジスター２４は、データ線駆動回路７０（図１参照）からデータ線５０を介して供給されるデータ電位を、走査線駆動回路６０（図１参照）から走査線４０を介してパルス的に供給される走査信号に応じたタイミングで、画素電極２１及び保持容量２７に出力する。 The pixel switching transistor 24 is composed of, for example, an N-type transistor. The pixel switching transistor 24 has a gate electrically connected to the scanning line 40, a source electrically connected to the data line 50, and a drain electrically connected to the pixel electrode 21 and the storage capacitor 27. It is connected to the. The pixel switching transistor 24 applies a data potential supplied from the data line driving circuit 70 (see FIG. 1) via the data line 50 to the pulsed state via the scanning line 40 from the scanning line driving circuit 60 (see FIG. 1). Are output to the pixel electrode 21 and the storage capacitor 27 at a timing corresponding to the scanning signal supplied to the pixel.
画素電極２１には、データ線駆動回路７０からデータ線５０及び画素スイッチング用トランジスター２４を介して、データ電位が供給される。画素電極２１は、電気泳動素子２３を介して対向電極２２と互いに対向するように配置されている。 A data potential is supplied to the pixel electrode 21 from the data line driving circuit 70 via the data line 50 and the pixel switching transistor 24. The pixel electrode 21 is disposed so as to face the counter electrode 22 via the electrophoretic element 23.
対向電極２２は、共通電位Ｖｃｏｍが供給される共通電位線９３に電気的に接続されている。 The counter electrode 22 is electrically connected to a common potential line 93 to which a common potential Vcom is supplied.
電気泳動素子２３は、電気泳動粒子をそれぞれ含んでなる複数のマイクロカプセルから構成されている。 The electrophoretic element 23 is composed of a plurality of microcapsules each containing electrophoretic particles.
保持容量２７は、誘電体膜を介して対向配置された一対の電極からなり、一方の電極が、画素電極２１及び画素スイッチング用トランジスター２４に電気的に接続され、他方の電極が共通電位線９３に電気的に接続されている。保持容量２７によってデータ電位を一定期間だけ維持することができる。 The storage capacitor 27 is composed of a pair of electrodes arranged opposite to each other with a dielectric film therebetween, one electrode is electrically connected to the pixel electrode 21 and the pixel switching transistor 24, and the other electrode is a common potential line 93. Is electrically connected. The storage capacitor 27 can maintain the data potential for a certain period.
次に、本実施形態に係る電気泳動表示装置の表示部の具体的な構成について、図３を参照して説明する。 Next, a specific configuration of the display unit of the electrophoretic display device according to the present embodiment will be described with reference to FIG.
図３は、電気泳動表示装置１の表示部３の部分断面図である。 FIG. 3 is a partial cross-sectional view of the display unit 3 of the electrophoretic display device 1.
図３において、表示部３は、素子基板２８と対向基板２９との間に電気泳動素子２３が挟持される構成となっている。なお、本実施形態では、対向基板２９側に画像を表示することを前提として説明する。 In FIG. 3, the display unit 3 is configured such that an electrophoretic element 23 is sandwiched between an element substrate 28 and a counter substrate 29. In the present embodiment, description will be made on the assumption that an image is displayed on the counter substrate 29 side.
素子基板２８は、例えばガラスやプラスチック等からなる基板である。素子基板２８上には、ここでは図示を省略するが、図２を参照して前述した画素スイッチング用トランジスター２４、保持容量２７、走査線４０、データ線５０、共通電位線９３等が作り込まれた積層構造が形成されている。この積層構造の上層側に複数の画素電極２１がマトリクス状に設けられている。 The element substrate 28 is a substrate made of, for example, glass or plastic. Although not shown here, the pixel switching transistor 24, the storage capacitor 27, the scanning line 40, the data line 50, the common potential line 93, and the like described above with reference to FIG. 2 are formed on the element substrate 28. A laminated structure is formed. A plurality of pixel electrodes 21 are provided in a matrix on the upper layer side of the stacked structure.
対向基板２９は、例えばガラスやプラスチック等からなる透明な基板である。対向基板２９における素子基板２８との対向面上には、対向電極２２が複数の画素電極９ａと対向してベタ状に形成されている。対向電極２２は、例えばマグネシウム銀（ＭｇＡｇ）、インジウム・スズ酸化物（ＩＴＯ）、インジウム・亜鉛酸化物（ＩＺＯ）等の透明導電材料から形成されている。 The counter substrate 29 is a transparent substrate made of, for example, glass or plastic. On the surface of the counter substrate 29 facing the element substrate 28, the counter electrode 22 is formed in a solid shape so as to face the plurality of pixel electrodes 9a. The counter electrode 22 is made of a transparent conductive material such as magnesium silver (MgAg), indium / tin oxide (ITO), indium / zinc oxide (IZO).
電気泳動素子２３は、電気泳動粒子をそれぞれ含んでなる複数のマイクロカプセル８０から構成されており、例えば樹脂等からなるバインダー３０及び接着層３１によって素子基板２８及び対向基板２９間で固定されている。なお、本実施形態に係る電気泳動表示装置１は、製造プロセスにおいて、電気泳動素子２３が予め対向基板２９側にバインダー３０によって固定されてなる電気泳動シートが、別途製造された、画素電極２１等が形成された素子基板２８側に接着層３１によって接着されて構成されている。 The electrophoretic element 23 is composed of a plurality of microcapsules 80 each including electrophoretic particles, and is fixed between the element substrate 28 and the counter substrate 29 by a binder 30 and an adhesive layer 31 made of, for example, resin. . In the electrophoretic display device 1 according to this embodiment, in the manufacturing process, an electrophoretic sheet in which the electrophoretic element 23 is previously fixed to the counter substrate 29 side by the binder 30 is separately manufactured, such as the pixel electrode 21. It is constituted by being bonded by an adhesive layer 31 to the element substrate 28 side on which is formed.
マイクロカプセル８０は、画素電極２１及び対向電極２２間に挟持され、１つの画素２０内に（言い換えれば、１つの画素電極２１に対して）１つ又は複数配置されている。 One or a plurality of microcapsules 80 are sandwiched between the pixel electrode 21 and the counter electrode 22, and are arranged in one pixel 20 (in other words, with respect to one pixel electrode 21).
マイクロカプセル８０は、被膜８５の内部に分散媒８１と、複数の白色粒子８２と、複数の黒色粒子８３とが封入されてなる。マイクロカプセル８０は、例えば、５０ｕｍ程度の粒径を有する球状に形成されている。 The microcapsule 80 is formed by enclosing a dispersion medium 81, a plurality of white particles 82, and a plurality of black particles 83 inside a coating 85. The microcapsule 80 is formed in a spherical shape having a particle size of about 50 μm, for example.
被膜８５は、マイクロカプセル８０の外殻として機能し、ポリメタクリル酸メチル、ポリメタクリル酸エチル等のアクリル樹脂、ユリア樹脂、アラビアガム、ゼラチン等の透光性を有する高分子樹脂から形成されている。 The coating 85 functions as an outer shell of the microcapsule 80 and is formed of a translucent polymer resin such as acrylic resin such as polymethyl methacrylate and polyethyl methacrylate, urea resin, gum arabic, and gelatin. .
分散媒８１は、白色粒子８２及び黒色粒子８３をマイクロカプセル８０内（言い換えれば、被膜８５内）に分散させる媒質である。分散媒８１としては、水や、メタノール、エタノール、イソプロパノール、ブタノール、オクタノール、メチルセルソルブ等のアルコール系溶媒、酢酸エチル、酢酸ブチル等の各種エステル類、アセトン、メチルエチルケトン、メチルイソブチルケトン等のケトン類、ペンタン、ヘキサン、オクタン等の脂肪族炭化水素、シクロヘキサン、メチルシクロヘキサン等の脂環式炭化水素、ベンゼン、トルエンや、キシレン、ヘキシルベンゼン、へブチルベンゼン、オクチルベンゼン、ノニルベンゼン、デシルベンゼン、ウンデシルベンゼン、ドデシルベンゼン、トリデシルベンゼン、テトラデシルベンゼン等の長鎖アルキル基を有するベンゼン類等の芳香族炭化水素、塩化メチレン、クロロホルム、四塩化炭素、１、２−ジクロロエタン等のハロゲン化炭化水素、カルボン酸塩やその他の油類を単独で又は混合して用いることができる。また、分散媒８１には、界面活性剤が配合されてもよい。 The dispersion medium 81 is a medium for dispersing the white particles 82 and the black particles 83 in the microcapsules 80 (in other words, in the coating 85). Examples of the dispersion medium 81 include water, alcohol solvents such as methanol, ethanol, isopropanol, butanol, octanol, and methyl cellosolve, various esters such as ethyl acetate and butyl acetate, and ketones such as acetone, methyl ethyl ketone, and methyl isobutyl ketone. , Aliphatic hydrocarbons such as pentane, hexane and octane, alicyclic hydrocarbons such as cyclohexane and methylcyclohexane, benzene, toluene, xylene, hexylbenzene, hebutylbenzene, octylbenzene, nonylbenzene, decylbenzene, undecyl Aromatic hydrocarbons such as benzenes with long chain alkyl groups such as benzene, dodecylbenzene, tridecylbenzene, tetradecylbenzene, etc., halo such as methylene chloride, chloroform, carbon tetrachloride, 1,2-dichloroethane, etc. Emissions of hydrocarbons, carboxylate or other oils may be used singly or as a mixture. In addition, a surfactant may be added to the dispersion medium 81.
白色粒子８２は、例えば、二酸化チタン、亜鉛華（酸化亜鉛）、三酸化アンチモン等の白色顔料からなる粒子（高分子或いはコロイド）であり、例えば負に帯電されている。 The white particles 82 are particles (polymer or colloid) made of a white pigment such as titanium dioxide, zinc white (zinc oxide), and antimony trioxide, and are negatively charged, for example.
黒色粒子８３は、例えば、アニリンブラック、カーボンブラック等の黒色顔料からなる粒子（高分子或いはコロイド）であり、例えば正に帯電されている。 The black particles 83 are particles (polymer or colloid) made of a black pigment such as aniline black or carbon black, and are positively charged, for example.
このため、白色粒子８２及び黒色粒子８３は、画素電極２１と対向電極２２との間の電位差によって発生する電場によって、分散媒８１中を移動することができる。 For this reason, the white particles 82 and the black particles 83 can move in the dispersion medium 81 by the electric field generated by the potential difference between the pixel electrode 21 and the counter electrode 22.
これらの顔料には、必要に応じ、電解質、界面活性剤、金属石鹸、樹脂、ゴム、油、ワニス、コンパウンド等の粒子からなる荷電制御剤、チタン系カップリング剤、アルミニウム系カップリング剤、シラン系カップリング剤等の分散剤、潤滑剤、安定化剤等を添加することができる。 These pigments include electrolytes, surfactants, metal soaps, resins, rubbers, oils, varnishes, charge control agents composed of particles such as compounds, titanium-based coupling agents, aluminum-based coupling agents, silanes as necessary. A dispersant such as a system coupling agent, a lubricant, a stabilizer, and the like can be added.
図３において、画素電極２１と対向電極２２との間に、相対的に対向電極２２の電位が高くなるように電圧が印加された場合には、正に帯電された黒色粒子８３はクーロン力によってマイクロカプセル８０内で画素電極２１側に引き寄せられるとともに、負に帯電された白色粒子８２はクーロン力によってマイクロカプセル８０内で対向電極２２側に引き寄せられる。この結果、マイクロカプセル８０内の表示面側（即ち、対向電極２２側）には白色粒子８２が集まることになり、表示部３の表示面にはこの白色粒子８２の色（即ち、白色）が表示されることとなる。逆に、画素電極２１と対向電極２２との間に、相対的に画素電極２１の電位が高くなるように電圧が印加された場合には、負に帯電された白色粒子８２がクーロン力によって画素電極２１側に引き寄せられるとともに、正に帯電された黒色粒子８３はクーロン力によって対向電極２２側に引き寄せられる。この結果、マイクロカプセル８０の表示面側には黒色粒子８３が集まることになり、表示部３の表示面にはこの黒色粒子８３の色（即ち、黒色）が表示されることとなる。 In FIG. 3, when a voltage is applied between the pixel electrode 21 and the counter electrode 22 so that the potential of the counter electrode 22 is relatively high, the positively charged black particles 83 are caused by Coulomb force. While attracted to the pixel electrode 21 side in the microcapsule 80, the negatively charged white particles 82 are attracted to the counter electrode 22 side in the microcapsule 80 by the Coulomb force. As a result, the white particles 82 gather on the display surface side (that is, the counter electrode 22 side) in the microcapsule 80, and the color of the white particles 82 (that is, white) is displayed on the display surface of the display unit 3. Will be displayed. Conversely, when a voltage is applied between the pixel electrode 21 and the counter electrode 22 so that the potential of the pixel electrode 21 becomes relatively high, the negatively charged white particles 82 are generated by the Coulomb force. While attracted to the electrode 21 side, the positively charged black particles 83 are attracted to the counter electrode 22 side by Coulomb force. As a result, the black particles 83 are collected on the display surface side of the microcapsule 80, and the color of the black particles 83 (that is, black) is displayed on the display surface of the display unit 3.
なお、白色粒子８２、黒色粒子８３に用いる顔料を、例えば赤色、緑色、青色等の顔料に代えることによって、赤色、緑色、青色等を表示することができる。 In addition, red, green, blue, etc. can be displayed by replacing the pigment used for the white particle 82 and the black particle 83 with pigments, such as red, green, and blue, for example.
次に、本実施形態に係る電気泳動表示装置の制御方法について、図４から図７を参照して説明する。以下では、図４に示すように、表示部３に表示される画像が、画像Ｐ１から画像Ｐ２に書き換えられる場合を例にとりながら、前述した電気泳動表示装置１の制御方法について説明する。なお、画像Ｐ１及びＰ２の各々は、黒色及び白色の２階調からなる２階調画像である。図４は、書き換え前の画像Ｐ１と書き換え後の画像Ｐ２の一例を示す平面図である。 Next, a method for controlling the electrophoretic display device according to the present embodiment will be described with reference to FIGS. Hereinafter, as shown in FIG. 4, the above-described control method of the electrophoretic display device 1 will be described with an example in which an image displayed on the display unit 3 is rewritten from the image P1 to the image P2. Each of the images P1 and P2 is a two-gradation image composed of two gradations of black and white. FIG. 4 is a plan view showing an example of the image P1 before rewriting and the image P2 after rewriting.
図５は、電気泳動表示装置１における画像書き換えの際の複数の画素電極２１へのデータ電位の供給方法を概念的に示す概念図である。なお、図５には、その上段側に、複数のフレーム期間Ｔ１、Ｔ２、Ｔ３及びＴ４の各々について複数の画素電極２１に供給されるデータ電位が概念的に示されており、その下段側に、各フレーム期間Ｔ１、Ｔ２、Ｔ３及びＴ４において複数の画素電極２１にデータ電位が供給されることにより表示部３に表示されることとなる画像が概念的に示されている。 FIG. 5 is a conceptual diagram conceptually showing a method of supplying data potentials to the plurality of pixel electrodes 21 at the time of image rewriting in the electrophoretic display device 1. FIG. 5 conceptually shows data potentials supplied to the plurality of pixel electrodes 21 for each of the plurality of frame periods T1, T2, T3, and T4 on the upper side, and on the lower side. Images conceptually shown on the display unit 3 by supplying data potentials to the plurality of pixel electrodes 21 in each of the frame periods T1, T2, T3, and T4 are conceptually shown.
図５に示すように、本実施形態では、表示部３に表示されている画像を画像Ｐ１から画像Ｐ２へ書き換える際、４つのフレーム期間Ｔ１、Ｔ２、Ｔ３及びＴ４の各々において、複数の画素２０の各々の画素電極２１に、画像Ｐ１及びＰ２の画像データに応じたデータ電位を供給することにより、表示部３に画像Ｐ２を表示させる。ここで、フレーム期間Ｔ１、Ｔ２、Ｔ３及びＴ４は、ｍ本の走査線を順次に１回ずつ選択する期間として予め定められた期間である。つまり、フレーム期間Ｔ１、Ｔ２、Ｔ３及びＴ４の各々において、複数の画素２０の各々の画素電極２１へのデータ電位の供給（以下、「データ電位供給」と適宜称する）が、コントローラー１０による制御下で走査線駆動回路６０及びデータ線駆動回路７０（以下、走査線駆動回路６０及びデータ線駆動回路７０を「駆動部」と適宜総称する）によって１回ずつ行われることにより表示部３に表示されていた画像が画像Ｐ１から画像Ｐ２に書き換えられる。 As shown in FIG. 5, in the present embodiment, when the image displayed on the display unit 3 is rewritten from the image P1 to the image P2, a plurality of pixels 20 are respectively displayed in each of the four frame periods T1, T2, T3, and T4. By supplying a data potential corresponding to the image data of the images P1 and P2 to each of the pixel electrodes 21, the image P2 is displayed on the display unit 3. Here, the frame periods T1, T2, T3, and T4 are predetermined periods for sequentially selecting m scanning lines one by one. That is, in each of the frame periods T1, T2, T3, and T4, the supply of the data potential to each pixel electrode 21 of the plurality of pixels 20 (hereinafter appropriately referred to as “data potential supply”) is controlled by the controller 10. In this case, the scanning line driving circuit 60 and the data line driving circuit 70 (hereinafter, the scanning line driving circuit 60 and the data line driving circuit 70 are collectively referred to as “driving unit” as appropriate) are displayed once on the display unit 3. The previously stored image is rewritten from the image P1 to the image P2.
次に、フレーム期間Ｔ１、Ｔ２、Ｔ３及びＴ４の各々におけるデータ電位供給について、図５に加えて図６及び図７を参照して説明する。 Next, data potential supply in each of the frame periods T1, T2, T3, and T4 will be described with reference to FIGS. 6 and 7 in addition to FIG.
図６は、第１フレーム期間Ｔ１に行われるデータ電位供給を概念的に示す概念図であり、図７は、第４フレーム期間Ｔ４に行われるデータ電位供給を概念的に示す概念図である。なお、本実施形態では、第２フレーム期間Ｔ２及び第３フレーム期間Ｔ３の各々において、第１フレーム期間Ｔ１と同様のデータ電位供給が行われる。 6 is a conceptual diagram conceptually showing the data potential supply performed in the first frame period T1, and FIG. 7 is a conceptual diagram conceptually showing the data potential supply performed in the fourth frame period T4. In the present embodiment, the same data potential supply as that in the first frame period T1 is performed in each of the second frame period T2 and the third frame period T3.
図５及び図６において、表示部３に表示されている画像を画像Ｐ１から画像Ｐ２へ書き換える際、まず、第１フレーム期間Ｔ１において、以下のようなデータ電位供給が行われる。なお、データ電位供給は、コントローラー１０による制御下で、駆動部（即ち、走査線駆動回路６０及びデータ線駆動回路７０）によって行われる。 5 and 6, when rewriting the image displayed on the display unit 3 from the image P1 to the image P2, first, the following data potential supply is performed in the first frame period T1. The data potential supply is performed by the drive unit (that is, the scanning line drive circuit 60 and the data line drive circuit 70) under the control of the controller 10.
即ち、第１フレーム期間Ｔ１では、表示すべき階調が白色から黒色へ変化することとなる領域Ｒｗｂに対応する画素２０の画素電極２１にデータ電位として高電位ＶＨ（例えば＋１５ボルト）が供給され、表示すべき階調が黒色から白色へ変化することとなる領域Ｒｂｗに対応する画素２０の画素電極２１にデータ電位として低電位ＶＬ（例えば−１５ボルト）が供給され、表示すべき階調が白色のままで変化しない領域Ｒｗｗ及び黒色のままで変化しない領域Ｒｂｂの各々に対応する画素２０の画素電極２１にデータ電位として基準電位ＧＮＤ（例えば０ボルト）が供給される。なお、領域Ｒｗｂは本発明に係る「第１領域」の一例であり、領域Ｒｂｗは本発明に係る「第２領域」の一例であり、領域Ｒｗｗは本発明に係る「第３領域」の一例であり、領域Ｒｂｂは本発明に係る「第４領域」の一例である。第１フレーム期間Ｔ１においてこのようなデータ電位供給が行われることにより、表示部３には例えば画像Ｍ１（図５参照）が表示される。即ち、第１フレーム期間Ｔ１においてこのようなデータ電供給が行われた後には、白色を表示していた画素２０のうち領域Ｒｗｂに対応する画素２０では例えば薄い灰色など白色から黒色側にやや近づいた色が表示され、黒色を表示していた画素２０のうち領域Ｒｂｂに対応する画素２０では例えば濃い灰色など黒色から白色側にやや近づいた色が表示され、白色を表示していた画素２０のうち領域Ｒｗｗに対応する画素２０では引き続き白色が表示され、黒色を表示していた画素２０のうち領域Ｒｂｂに対応する画素２０では引き続き黒色が表示される。 That is, in the first frame period T1, the high potential VH (for example, +15 volts) is supplied as the data potential to the pixel electrode 21 of the pixel 20 corresponding to the region Rwb in which the gradation to be displayed changes from white to black. The low potential VL (for example, −15 volts) is supplied as the data potential to the pixel electrode 21 of the pixel 20 corresponding to the region Rbw in which the gradation to be displayed changes from black to white, and the gradation to be displayed is A reference potential GND (for example, 0 volts) is supplied as a data potential to the pixel electrode 21 of the pixel 20 corresponding to each of the region Rww that remains white and does not change and the region Rbb that remains black and does not change. The region Rwb is an example of the “first region” according to the present invention, the region Rbw is an example of the “second region” according to the present invention, and the region Rww is an example of the “third region” according to the present invention. The region Rbb is an example of the “fourth region” according to the present invention. By supplying such a data potential in the first frame period T1, for example, an image M1 (see FIG. 5) is displayed on the display unit 3. That is, after such data power supply is performed in the first frame period T1, among the pixels 20 displaying white, the pixels 20 corresponding to the region Rwb slightly approach from the white to the black side, such as light gray. Of the pixels 20 that displayed black, the pixel 20 corresponding to the region Rbb displays a color that is slightly closer to the white side from black, such as dark gray, for example. Of these, the pixel 20 corresponding to the region Rww continues to display white, and the pixel 20 corresponding to the region Rbb out of the pixels 20 displaying black continues to display black.
次に、第１フレーム期間Ｔ１の後の第２フレーム期間Ｔ２、及びこの第２フレーム期間Ｔ２の後の第３フレーム期間Ｔ３の各々において、第１フレーム期間Ｔ１と同様のデータ電位供給が行われる。即ち、第２フレーム期間Ｔ２及び第３フレーム期間Ｔ３の各々では、領域Ｒｗｂに対応する画素２０の画素電極２１にデータ電位として高電位ＶＨ（例えば＋１５ボルト）が供給され、領域Ｒｂｗに対応する画素２０の画素電極２１にデータ電位として低電位ＶＬ（例えば−１５ボルト）が供給され、領域Ｒｗｗ及び黒色のままで変化しない領域Ｒｂｂの各々に対応する画素２０の画素電極２１にデータ電位として基準電位ＧＮＤ（例えば０ボルト）が供給される。第２フレーム期間Ｔ２においてこのようなデータ電位供給が行われることにより、表示部３には例えば画像Ｍ２（図５参照）が表示され、第３フレーム期間Ｔ３においてこのようなデータ電位供給が行われることにより、表示部３には例えば画像Ｍ３（図５参照）が表示される。 Next, in each of the second frame period T2 after the first frame period T1 and the third frame period T3 after the second frame period T2, the same data potential supply as that in the first frame period T1 is performed. . That is, in each of the second frame period T2 and the third frame period T3, a high potential VH (for example, +15 volts) is supplied as a data potential to the pixel electrode 21 of the pixel 20 corresponding to the region Rwb, and the pixel corresponding to the region Rbw. The low potential VL (for example, −15 volts) is supplied as the data potential to the 20 pixel electrodes 21, and the reference potential as the data potential is applied to the pixel electrode 21 of the pixel 20 corresponding to each of the region Rww and the region Rbb that remains black. GND (for example, 0 volts) is supplied. By supplying such a data potential in the second frame period T2, for example, an image M2 (see FIG. 5) is displayed on the display unit 3, and such a data potential supply is performed in the third frame period T3. Thereby, for example, the image M3 (see FIG. 5) is displayed on the display unit 3.
次に、図５及び図７において、第３フレーム期間Ｔ３の後の第４フレーム期間Ｔ４において、以下のようにデータ電位供給が行われる。 Next, in FIG. 5 and FIG. 7, in the fourth frame period T4 after the third frame period T3, the data potential is supplied as follows.
即ち、第４フレーム期間Ｔ４では、領域Ｒｗｂに対応する画素２０の画素電極２１にデータ電位として高電位ＶＨ（例えば＋１５ボルト）が供給され、領域Ｒｂｗに対応する画素２０の画素電極２１にデータ電位として低電位ＶＬ（例えば−１５ボルト）が供給され、領域Ｒｂｂに対応する画素２０の画素電極２１にデータ電位として基準電位ＧＮＤ（例えば０ボルト）が供給され、領域Ｒｗｗのうち領域Ｒｗｂに隣り合うとともに領域Ｒｗｂを所定幅（例えば一画素の大きさに対応する幅）で部分的に取り囲む領域Ｒｓに対応する画素２０の画素電極２１にデータ電位として低電位ＶＬが供給され、領域Ｒｗｗのうち領域Ｒｓを除く領域Ｒｗｗａに対応すする画素２０の画素電極２１に基準電位ＧＮＤ（例えば０ボルト）が供給される。なお、領域Ｒｓは本発明に係る「第５領域」の一例である。ここで、「部分的に取り囲む領域Ｒｓ」とは、領域Ｒｗｂに隣り合う領域のうち、少なくとも領域Ｒｂｂを除いた領域を指す。このようにすれば、黒を表示すべき領域Ｒｂｂの画素電極２１に低電位ＶＬが供給されて、領域Ｒｂｂが白方向に書き換わるのを避けることができる。また、「部分的に取り囲む領域Ｒｓ」は、領域Ｒｗｂに隣り合う領域のうち、領域Ｒｂｂと、輪郭残像が生じないことが予め分かっている領域（例えば領域Ｒｗｂに斜めに隣り合う画素）とを除いた領域としてもよい。 That is, in the fourth frame period T4, a high potential VH (for example, +15 volts) is supplied as a data potential to the pixel electrode 21 of the pixel 20 corresponding to the region Rwb, and the data potential is applied to the pixel electrode 21 of the pixel 20 corresponding to the region Rbw. Is supplied with a low potential VL (for example, −15 volts), a reference potential GND (for example, 0 volts) is supplied as a data potential to the pixel electrode 21 of the pixel 20 corresponding to the region Rbb, and is adjacent to the region Rwb in the region Rww. A low potential VL is supplied as a data potential to the pixel electrode 21 of the pixel 20 corresponding to the region Rs partially surrounding the region Rwb with a predetermined width (for example, a width corresponding to the size of one pixel). A reference potential GND (for example, 0 volt) is supplied to the pixel electrode 21 of the pixel 20 corresponding to the region Rwwa excluding Rs. The region Rs is an example of the “fifth region” according to the present invention. Here, the “partially surrounding region Rs” refers to a region excluding at least the region Rbb among regions adjacent to the region Rwb. By doing so, it is possible to avoid the low potential VL being supplied to the pixel electrode 21 in the region Rbb where black is to be displayed and the region Rbb being rewritten in the white direction. In addition, the “partially surrounding region Rs” includes a region Rbb and a region in which it is known in advance that an afterimage is not generated (for example, a pixel diagonally adjacent to the region Rwb) among the regions adjacent to the region Rwb. The excluded area may be used.
よって、第４フレーム期間Ｔ４では、領域Ｒｗｂに隣り合うとともにこの領域Ｒｗｂを所定幅で部分的に取り囲む領域Ｒｓに対応する画素２０の画素電極２１と対向電極２２との間に低電位ＶＬ（例えば−１５ボルト）と基準電位ＧＮＤ（例えば０ボルト）との電位差に応じた電圧が印加される。 Therefore, in the fourth frame period T4, a low potential VL (for example, between the pixel electrode 21 and the counter electrode 22 of the pixel 20 corresponding to the region Rs adjacent to the region Rwb and partially surrounding the region Rwb with a predetermined width). −15 volts) and a voltage corresponding to the potential difference between the reference potential GND (for example, 0 volts) is applied.
したがって、表示すべき階調が白色のままで変化しない領域Ｒｗｗのうち、表示すべき階調が白色から黒色へ変化することとなる領域Ｒｗｂに隣り合うとともにこの領域Ｒｗｂを部分的に取り囲む領域Ｒｓに対応する画素２０に白色を確実に表示させることができる。これにより、表示部３に表示される画像のうち白色で表示される白画像と黒色で表示される黒画像との境界部の滲みの発生を抑制できる。この結果、輪郭残像の発生も抑制できる。 Accordingly, among the regions Rww where the gradation to be displayed remains white and does not change, the region Rs which is adjacent to the region Rwb where the gradation to be displayed changes from white to black and partially surrounds the region Rwb. It is possible to reliably display white on the pixel 20 corresponding to the above. Thereby, it is possible to suppress the occurrence of blurring at the boundary between the white image displayed in white and the black image displayed in black among the images displayed on the display unit 3. As a result, the occurrence of the contour afterimage can be suppressed.
ここで、図５に示すように、例えば第３フレーム期間Ｔ３において前述したようなデータ電位供給が行われた後に表示部３に表示される画像Ｍ３に、領域Ｒｗｗにおける領域Ｒｂｗとの境界付近に、例えば灰色など白色から黒色側に近づいた色が表示される滲み部９１０が発生するおそれがある。 Here, as shown in FIG. 5, for example, in the image M3 displayed on the display unit 3 after the data potential supply as described above is performed in the third frame period T3, in the vicinity of the boundary between the region Rbw and the region Rbw. For example, there is a possibility that a blurring portion 910 in which a color approaching the black side from white such as gray is displayed.
図８は、表示部３に表示される画像における境界部の滲みの発生を説明するための模式図である。 FIG. 8 is a schematic diagram for explaining the occurrence of blurring at the boundary in the image displayed on the display unit 3.
図８に示すように、領域Ｒｗｗに対応する画素２０ｗｗの画素電極２１ｗｗにデータ電位として基準電位ＧＮＤが供給されるととともに、この画素２０ｗｗに隣り合う領域ｗｂに対応する画素２０ｗｂの画素電極２１ｗｂにデータ電位として高電位ＶＨが供給された場合、画素スイッチング用トランジスター２４（図２参照）がオフ状態とされたときに、画素電極２１ｗｂと画素電極２１ｗｗとの間にリーク電流が生じて、基準電位ＧＮＤであった画素電極２１ｗｗの電位が高くなる（即ち、高電位ＶＨに近づく）おそれがある。よって、画素２０ｗｗにおいて、画素電極２１ｗｗと対向電極２２との間に生じた電位差によって、黒色粒子８３が対向電極２２側に移動するとともに白色粒子が画素電極２１ｗｗ側に移動してしまうおそれがある。したがって、白色を表示すべき画素２０ｗｗにおいて、灰色や黒色などの白色とは異なる色が表示されてしまうおそれがある。この結果、表示部３に表示される画像における黒画像部分と白画像部分との境界部の滲みが発生してしまうおそれがある。 As shown in FIG. 8, the reference potential GND is supplied as the data potential to the pixel electrode 21ww of the pixel 20ww corresponding to the region Rww, and the pixel electrode 21wb of the pixel 20wb corresponding to the region wb adjacent to the pixel 20ww is supplied. When the high potential VH is supplied as the data potential, when the pixel switching transistor 24 (see FIG. 2) is turned off, a leak current is generated between the pixel electrode 21wb and the pixel electrode 21ww, and the reference potential There is a possibility that the potential of the pixel electrode 21ww that is GND becomes high (that is, approaches the high potential VH). Therefore, in the pixel 20ww, the black particles 83 may move toward the counter electrode 22 and the white particles may move toward the pixel electrode 21ww due to a potential difference generated between the pixel electrode 21ww and the counter electrode 22. Therefore, in the pixel 20ww that should display white, a color different from white such as gray or black may be displayed. As a result, there is a risk that bleeding at the boundary between the black image portion and the white image portion in the image displayed on the display unit 3 may occur.
しかるに、本実施形態では特に、前述したように、第４フレーム期間Ｔ４では、表示すべき階調が白色のままで変化しない領域Ｒｗｗのうち、表示すべき階調が白色から黒色へ変化することとなる領域Ｒｗｂに隣り合うとともにこの領域Ｒｗｂを所定幅で部分的に取り囲む領域Ｒｓに対応する画素２０の画素電極２１にデータ電位として低電位ＶＬを供給するので、領域Ｒｓにおける画素２０に白色を確実に表示させることができる。よって、表示部３に表示される画像における境界部の滲みの発生を抑制できる。 However, in the present embodiment, as described above, in the fourth frame period T4, the gradation to be displayed changes from white to black in the region Rww where the gradation to be displayed remains white. Since the low potential VL is supplied as the data potential to the pixel electrode 21 of the pixel 20 corresponding to the region Rs adjacent to the region Rwb and partially surrounding the region Rwb with a predetermined width, white is applied to the pixel 20 in the region Rs. It can be displayed reliably. Therefore, it is possible to suppress the occurrence of blurring at the boundary in the image displayed on the display unit 3.
更に、本実施形態では特に、第４フレーム期間Ｔ４において、領域Ｒｗｂに対応する画素２０の画素電極２１にデータ電位として高電位ＶＨ（例えば＋１５ボルト）を供給し、領域Ｒｂｗに対応する画素２０の画素電極２１にデータ電位として低電位ＶＬ（例えば−１５ボルト）を供給する。よって、階調を白色から黒色に変化させるべき画素２０である領域Ｒｗｂに対応する画素２０の階調を確実に黒色に変化させることができるとともに、階調を黒色から白色に変化させるべき画素２０である領域Ｒｂｗに対応する画素２０の階調を確実に白に変化させることができる。よって、画像Ｐ２をよりくっきりとした画像として表示部３に表示させることができる。更に、各画素２０についてＤＣバランス比（即ち、画素電極２１及び対向電極２２間に白色に応じた電圧（即ち、低電位ＶＬと基準電位ＧＮＤとの電位差）が印加される時間と、画素電極２１及び対向電極２２間に黒色に応じた電圧（即ち、高電位ＶＨと基準電位ＧＮＤとの電位差）が印加される時間との比）が崩れてしまうのを抑制或いは防止できる。即ち、各画素２０について、画素電極２１及び対向電極２２間に白色に応じた電圧が印加される時間と黒色に応じた電圧が印加される時間との差を小さくすることができる。 Further, particularly in the present embodiment, in the fourth frame period T4, a high potential VH (for example, +15 volts) is supplied as a data potential to the pixel electrode 21 of the pixel 20 corresponding to the region Rwb, and the pixel 20 corresponding to the region Rbw is supplied. A low potential VL (for example, −15 volts) is supplied to the pixel electrode 21 as a data potential. Therefore, the gradation of the pixel 20 corresponding to the region Rwb, which is the pixel 20 whose gradation should be changed from white to black, can be reliably changed to black, and the pixel 20 whose gradation should be changed from black to white. Thus, the gradation of the pixel 20 corresponding to the region Rbw can be reliably changed to white. Therefore, the image P2 can be displayed on the display unit 3 as a clearer image. Further, for each pixel 20, a DC balance ratio (that is, a time during which a voltage corresponding to white (that is, a potential difference between the low potential VL and the reference potential GND) is applied between the pixel electrode 21 and the counter electrode 22) In addition, it is possible to suppress or prevent the collapse of the voltage corresponding to black (that is, the ratio of the time during which the voltage difference between the high potential VH and the reference potential GND) is applied between the counter electrodes 22. That is, for each pixel 20, the difference between the time during which a voltage corresponding to white is applied between the pixel electrode 21 and the counter electrode 22 and the time during which a voltage according to black is applied can be reduced.
加えて、本実施形態では特に、前述したような領域Ｒｓに対応する画素２０の画素電極２１にデータ電位として低電位ＶＬを供給するデータ電位供給（以下、「境界領域データ電位供給」と適宜称する）は、表示部３に表示されている画像を書き換える際の連続する４つのフレーム期間Ｔ１、…、Ｔ４のうちの最後のフレーム期間である第４フレーム期間Ｔ４で行われる。よって、表示部３に表示される画像における境界部の滲みの発生をより確実に抑制できる。 In addition, in this embodiment, in particular, a data potential supply for supplying a low potential VL as a data potential to the pixel electrode 21 of the pixel 20 corresponding to the region Rs as described above (hereinafter referred to as “boundary region data potential supply” as appropriate). ) Is performed in the fourth frame period T4 which is the last frame period among the four consecutive frame periods T1,..., T4 when the image displayed on the display unit 3 is rewritten. Therefore, it is possible to more reliably suppress the occurrence of blurring at the boundary portion in the image displayed on the display unit 3.
なお、本実施形態では、前述した境界領域データ電位供給が、４つの連続するフレーム期間Ｔ１、…、Ｔ４のうち最終のフレーム期間である第４フレーム期間Ｔ４のみで行われる例を挙げたが、境界領域データ電位供給は、第４フレーム期間Ｔ４に加えて、第１フレーム期間Ｔ１、第２フレーム期間Ｔ２及び第３フレーム期間Ｔ３の少なくともいずれかにおいて行われてもよい。即ち、第４フレーム期間Ｔ４に加えて、第１フレーム期間Ｔ１、第２フレーム期間Ｔ２及び第３フレーム期間Ｔ３のいずれかにおいても、第４フレーム期間Ｔ４において行われる前述したデータ電位供給が行われてもよい。また、前述した境界領域データ電位供給は、４つのフレーム期間Ｔ１、…、Ｔ４の後半のフレーム期間（即ち、第３フレーム期間Ｔ３及び第４フレーム期間Ｔ４）のうちの少なくとも一のフレーム期間で行われることが好ましい。この場合には、表示部３に表示される画像における境界部の滲みの発生をより確実に抑制できる。 In the present embodiment, the boundary region data potential supply described above is performed only in the fourth frame period T4 which is the final frame period among the four consecutive frame periods T1, ..., T4. The boundary region data potential supply may be performed in at least one of the first frame period T1, the second frame period T2, and the third frame period T3 in addition to the fourth frame period T4. That is, in addition to the fourth frame period T4, the above-described data potential supply performed in the fourth frame period T4 is performed in any of the first frame period T1, the second frame period T2, and the third frame period T3. May be. Further, the boundary region data potential supply described above is performed in at least one frame period among the frame periods of the latter half of the four frame periods T1,..., T4 (that is, the third frame period T3 and the fourth frame period T4). Are preferred. In this case, the occurrence of blurring at the boundary in the image displayed on the display unit 3 can be more reliably suppressed.
以上説明したように、本実施形態に係る電気泳動表示装置１によれば、表示部３に表示される画像における境界部の滲みの発生を抑制でき、ひいては、輪郭残像の発生を抑制できる。この結果、高品位な画像を表示することが可能となる。 As described above, according to the electrophoretic display device 1 according to the present embodiment, it is possible to suppress the occurrence of blurring of the boundary portion in the image displayed on the display unit 3 and, in turn, it is possible to suppress the generation of the contour afterimage. As a result, a high quality image can be displayed.
＜電子機器＞
次に、前述した電気泳動表示装置を適用した電子機器について、図９及び図１０を参照して説明する。以下では、前述した電気泳動表示装置を電子ペーパー及び電子ノートに適用した場合を例にとる。
<Electronic equipment>
Next, electronic devices to which the above-described electrophoretic display device is applied will be described with reference to FIGS. Below, the case where the electrophoretic display device described above is applied to electronic paper and electronic notebook is taken as an example.
図９は、電子ペーパー１４００の構成を示す斜視図である。 FIG. 9 is a perspective view illustrating a configuration of the electronic paper 1400.
図９に示すように、電子ペーパー１４００は、前述した実施形態に係る電気泳動表示装置を表示部１４０１として備えている。電子ペーパー１４００は可撓性を有し、従来の紙と同様の質感及び柔軟性を有する書き換え可能なシートからなる本体１４０２を備えて構成されている。 As shown in FIG. 9, the electronic paper 1400 includes the electrophoretic display device according to the above-described embodiment as a display unit 1401. The electronic paper 1400 has flexibility, and includes a main body 1402 formed of a rewritable sheet having the same texture and flexibility as conventional paper.
図１０は、電子ノート１５００の構成を示す斜視図である。 FIG. 10 is a perspective view illustrating a configuration of the electronic notebook 1500.
図１０に示すように、電子ノート１５００は、図９で示した電子ペーパー１４００が複数枚束ねられ、カバー１５０１に挟まれているものである。カバー１５０１は、例えば外部の装置から送られる表示データを入力するための表示データ入力手段（図示せず）を備える。これにより、その表示データに応じて、電子ペーパーが束ねられた状態のまま、表示内容の変更や更新を行うことができる。 As shown in FIG. 10, an electronic notebook 1500 is one in which a plurality of electronic papers 1400 shown in FIG. 9 are bundled and sandwiched between covers 1501. The cover 1501 includes display data input means (not shown) for inputting display data sent from an external device, for example. Thereby, according to the display data, the display content can be changed or updated while the electronic paper is bundled.
前述した電子ペーパー１４００及び電子ノート１５００は、前述した実施形態に係る電気泳動表示装置を備えるので、高品質な画像表示を行うことが可能である。 Since the electronic paper 1400 and the electronic notebook 1500 described above include the electrophoretic display device according to the above-described embodiment, high-quality image display can be performed.
なお、これらの他に、腕時計、携帯電話、携帯用オーディオ機器などの電子機器の表示部に、前述した本実施形態に係る電気泳動表示装置を適用することができる。 In addition to these, the electrophoretic display device according to the present embodiment described above can be applied to a display unit of an electronic device such as a wristwatch, a mobile phone, or a portable audio device.
なお、上記実施形態では、白色粒子８２が負に帯電し、黒色粒子８３が正に帯電している例で説明したが、白色粒子８２が正に帯電し、黒色粒子８３が負に帯電していてもよい。また、電気泳動素子２３は、マイクロカプセル８０を有する構成に限られず、隔壁によって仕切られた空間に電気泳動分散媒と電気泳動粒子が含まれる構成であってもよい。また、電気光学装置として電気泳動素子２３を有するものを例に説明したが、これに限定する趣旨ではない。電気光学装置は、上記実施形態のように輪郭残像が生じ得る表示素子を備えるものであればどのようなものであってもよく、例えば電子粉流体を用いた電気光学装置であってもよい。 In the above embodiment, the white particles 82 are negatively charged and the black particles 83 are positively charged. However, the white particles 82 are positively charged and the black particles 83 are negatively charged. May be. Further, the electrophoretic element 23 is not limited to the configuration having the microcapsules 80, and may be a configuration in which the electrophoretic dispersion medium and the electrophoretic particles are included in a space partitioned by the partition walls. Further, the electro-optical device having the electrophoretic element 23 has been described as an example, but the present invention is not limited to this. The electro-optical device may be any device as long as it has a display element that can generate a contour afterimage as in the above-described embodiment. For example, the electro-optical device may be an electro-optical device using an electronic powder fluid.
本発明は、上述した実施形態に限られるものではなく、特許請求の範囲及び明細書全体から読み取れる発明の要旨或いは思想に反しない範囲で適宜変更可能であり、そのような変更を伴う電気光学装置の制御方法、電気光学装置の制御装置、電気光学装置、及び電子機器もまた本発明の技術的範囲に含まれるものである。 The present invention is not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit or idea of the invention that can be read from the claims and the entire specification, and an electro-optical device with such a change. The control method, electro-optical device control device, electro-optical device, and electronic apparatus are also included in the technical scope of the present invention.
３…表示部、１０…コントローラー、２０…画素、２１…画素電極、２２…対向電極、２４…画素スイッチング用トランジスター、２８…素子基板、２９…対向基板、４０…走査線、５０…データ線、６０…走査線駆動回路、７０…データ線駆動回路、８２…白色粒子、８３…黒色粒子、２２０…共通電位供給回路、ＶＬ…低電位、ＶＨ…高電位、ＧＮＤ…基準電位、Ｒｗｂ、Ｒｂｗ、Ｒｗｗ、Ｒｂｂ、Ｒｓ…領域。 DESCRIPTION OF SYMBOLS 3 ... Display part, 10 ... Controller, 20 ... Pixel, 21 ... Pixel electrode, 22 ... Counter electrode, 24 ... Pixel switching transistor, 28 ... Element substrate, 29 ... Counter substrate, 40 ... Scanning line, 50 ... Data line, 60 ... scanning line driving circuit, 70 ... data line driving circuit, 82 ... white particles, 83 ... black particles, 220 ... common potential supply circuit, VL ... low potential, VH ... high potential, GND ... reference potential, Rwb, Rbw, Rww, Rbb, Rs... Region.
Claims (6)
前記表示部に表示されている画像を書き換える画像書き換えの際、前記フレーム期間中に、前記表示部における表示すべき階調が第１階調から該第１階調と異なる第２階調へ変化することとなる領域である第１領域に対応する前記画素の前記画素電極に前記データ電位として前記第２階調に応じた第２階調電位を供給し、前記表示部における表示すべき階調が前記第２階調から前記第１階調へ変化することとなる領域である第２領域に対応する前記画素の前記画素電極に前記データ電位として前記第１階調に応じた第１階調電位を供給し、前記表示部における表示すべき階調が前記第１階調のままで変化しない領域である第３領域及び前記表示部における表示すべき階調が前記第２階調のままで変化しない領域である第４領域の各々に対応する前記画素の前記画素電極に前記対向電極の電位と同一の電位を供給するように、前記駆動部を制御する第１制御工程と、
前記画像書き換えの際、前記フレーム期間中に、前記表示部における前記第３領域のうち前記第１領域に隣り合うとともに前記第１領域を所定幅で少なくとも部分的に取り囲む領域である第５領域に対応する前記画素の前記画素電極に前記データ電位として前記第１階調電位を供給するように、前記駆動部を制御する第２制御工程と
を含むことを特徴とする電気光学装置の制御方法。 A display unit provided corresponding to the intersection of a plurality of scanning lines and a plurality of data lines crossing each other, and a pixel electrode facing each other and a plurality of pixels each having an electro-optic material between the counter electrodes; A drive unit configured to supply a plurality of potentials to supply a data potential corresponding to the image data to the pixel electrode of each of the plurality of pixels during a predetermined frame period in order to display an image corresponding to the image data; A control method for controlling an electro-optical device provided,
When rewriting an image displayed on the display unit, the gradation to be displayed on the display unit changes from the first gradation to a second gradation different from the first gradation during the frame period. A second gradation potential corresponding to the second gradation is supplied as the data potential to the pixel electrode of the pixel corresponding to the first area which is a region to be operated, and the gradation to be displayed in the display portion The first gradation corresponding to the first gradation as the data potential is applied to the pixel electrode of the pixel corresponding to the second region, which is a region where the second gradation is changed from the second gradation to the first gradation. A potential is supplied, and a third region which is a region where the gray level to be displayed on the display unit remains unchanged at the first gray level and a gray level to be displayed on the display unit remains the second gray level. Corresponding to each of the fourth areas, which are areas that do not change To supply the same potential as the potential of the opposing electrode to the pixel electrode of the pixel, and a first controlling process of controlling the drive unit,
During the image rewriting, during the frame period, the third region in the display unit is adjacent to the first region and at least partially surrounds the first region with a predetermined width. And a second control step of controlling the driving unit so as to supply the first gradation potential as the data potential to the pixel electrode of the corresponding pixel.
前記表示部に表示されている画像を書き換える画像書き換えの際、前記フレーム期間中に、前記表示部における表示すべき階調が第１階調から該第１階調と異なる第２階調へ変化することとなる領域である第１領域に対応する前記画素の前記画素電極に前記データ電位として前記第２階調に応じた第２階調電位を供給し、前記表示部における表示すべき階調が前記第２階調から前記第１階調へ変化することとなる領域である第２領域に対応する前記画素の前記画素電極に前記データ電位として前記第１階調に応じた第１階調電位を供給し、前記表示部における表示すべき階調が前記第１階調のままで変化しない領域である第３領域及び前記表示部における表示すべき階調が前記第２階調のままで変化しない領域である第４領域の各々に対応する前記画素の前記画素電極に前記対向電極の電位と同一の電位を供給するように、前記駆動部を制御する第１制御手段と、
前記画像書き換えの際、前記フレーム期間中に、前記表示部における前記第３領域のうち前記第１領域に隣り合うとともに前記第１領域を所定幅で少なくとも部分的に取り囲む領域である第５領域に対応する前記画素の前記画素電極に前記データ電位として前記第１階調電位を供給するように、前記駆動部を制御する第２制御手段と
を備えることを特徴とする電気光学装置の制御装置。 A display unit provided corresponding to the intersection of a plurality of scanning lines and a plurality of data lines crossing each other, and a pixel electrode facing each other and a plurality of pixels each having an electro-optic material between the counter electrodes; A drive unit configured to supply a plurality of potentials to supply a data potential corresponding to the image data to the pixel electrode of each of the plurality of pixels during a predetermined frame period in order to display an image corresponding to the image data; A control device for controlling the electro-optical device provided,
When rewriting an image displayed on the display unit, the gradation to be displayed on the display unit changes from the first gradation to a second gradation different from the first gradation during the frame period. A second gradation potential corresponding to the second gradation is supplied as the data potential to the pixel electrode of the pixel corresponding to the first area which is a region to be operated, and the gradation to be displayed in the display portion The first gradation corresponding to the first gradation as the data potential is applied to the pixel electrode of the pixel corresponding to the second region, which is a region where the second gradation is changed from the second gradation to the first gradation. A potential is supplied, and a third region which is a region where the gray level to be displayed on the display unit remains unchanged at the first gray level and a gray level to be displayed on the display unit remains the second gray level. Corresponding to each of the fourth areas, which are areas that do not change To supply the same potential as the potential of the opposing electrode to the pixel electrode of the pixel, a first control means for controlling the drive unit,
During the image rewriting, during the frame period, the third region in the display unit is adjacent to the first region and at least partially surrounds the first region with a predetermined width. A control device for an electro-optical device, comprising: a second control unit configured to control the driving unit so as to supply the first gradation potential as the data potential to the pixel electrode of the corresponding pixel.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011090914A JP5845614B2 (en) | 2011-04-15 | 2011-04-15 | Electro-optical device control method, electro-optical device control device, electro-optical device, and electronic apparatus |
| US13/443,364 US9280939B2 (en) | 2011-04-15 | 2012-04-10 | Method of controlling electrophoretic display device, control device for electrophoretic device, electrophoretic device, and electronic apparatus |
| CN201210109514.1A CN102737588B9 (en) | 2011-04-15 | 2012-04-13 | Method for controlling electro-optical device, control device for electro-optical device, and electronic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011090914A JP5845614B2 (en) | 2011-04-15 | 2011-04-15 | Electro-optical device control method, electro-optical device control device, electro-optical device, and electronic apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2012225983A true JP2012225983A (en) | 2012-11-15 |
| JP5845614B2 JP5845614B2 (en) | 2016-01-20 |
Family
ID=47276261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011090914A Active JP5845614B2 (en) | 2011-04-15 | 2011-04-15 | Electro-optical device control method, electro-optical device control device, electro-optical device, and electronic apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5845614B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140091352A (en) * | 2013-01-11 | 2014-07-21 | 엘지디스플레이 주식회사 | Electrophoresis display device and image update method thereof |
| US9024981B2 (en) | 2012-04-06 | 2015-05-05 | Seiko Epson Corporation | Control device, display device, electronic apparatus and controlling method |
| US9240134B2 (en) | 2012-03-01 | 2016-01-19 | Seiko Epson Corporation | Device for controlling electro-optic device including write section that executes first and second write operations during which different voltages are applied to pixels, method for controlling electro-optic device electro-optic device, and electronic apparatus |
| US9842548B2 (en) | 2012-03-23 | 2017-12-12 | Seiko Epson Corporation | Device for controlling display device, method of controlling display device, display device, and electronic apparatus |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006227470A (en) * | 2005-02-21 | 2006-08-31 | Seiko Epson Corp | Electrooptical device and electronic apparatus |
| JP2007512569A (en) * | 2003-11-21 | 2007-05-17 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Method and apparatus for reducing edge image residue in electrophoretic display device |
| JP2009204812A (en) * | 2008-02-27 | 2009-09-10 | Seiko Epson Corp | Image redrawing control device and information display device |
| JP2009229508A (en) * | 2008-03-19 | 2009-10-08 | Seiko Epson Corp | Driving method for electrophoretic display device, electrophoretic display device, and electronic equipment |
| JP2009258614A (en) * | 2008-03-24 | 2009-11-05 | Seiko Epson Corp | Method for driving electrophoretic display device, electrophoretic display device and electronic device |
| JP2009294569A (en) * | 2008-06-09 | 2009-12-17 | Seiko Epson Corp | Electrophoretic display device and electronic device |
| JP2010085620A (en) * | 2008-09-30 | 2010-04-15 | Seiko Epson Corp | Method for driving electrophoretic display device, the electrophoretic display device and electronic apparatus |
| JP2010113282A (en) * | 2008-11-10 | 2010-05-20 | Seiko Epson Corp | Method of driving electrophoretic display device, electrophoretic display device, and electronic device |
| JP2010113281A (en) * | 2008-11-10 | 2010-05-20 | Seiko Epson Corp | Method of driving electrophoretic display device, electrophoretic display device, and electronic device |
| JP2010181618A (en) * | 2009-02-05 | 2010-08-19 | Seiko Epson Corp | Method of driving electrophoretic display device, electrophoretic display device, and electronic apparatus |
| JP2011013685A (en) * | 2010-08-20 | 2011-01-20 | Seiko Epson Corp | Electrophoretic display, controller, and electronic device |
-
2011
- 2011-04-15 JP JP2011090914A patent/JP5845614B2/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007512569A (en) * | 2003-11-21 | 2007-05-17 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Method and apparatus for reducing edge image residue in electrophoretic display device |
| JP2006227470A (en) * | 2005-02-21 | 2006-08-31 | Seiko Epson Corp | Electrooptical device and electronic apparatus |
| US20090322220A1 (en) * | 2005-02-21 | 2009-12-31 | Seiko Epson Corporation | Electro-optic device and electronic instrument |
| JP2009204812A (en) * | 2008-02-27 | 2009-09-10 | Seiko Epson Corp | Image redrawing control device and information display device |
| JP2009229508A (en) * | 2008-03-19 | 2009-10-08 | Seiko Epson Corp | Driving method for electrophoretic display device, electrophoretic display device, and electronic equipment |
| JP2009258614A (en) * | 2008-03-24 | 2009-11-05 | Seiko Epson Corp | Method for driving electrophoretic display device, electrophoretic display device and electronic device |
| JP2009294569A (en) * | 2008-06-09 | 2009-12-17 | Seiko Epson Corp | Electrophoretic display device and electronic device |
| JP2010085620A (en) * | 2008-09-30 | 2010-04-15 | Seiko Epson Corp | Method for driving electrophoretic display device, the electrophoretic display device and electronic apparatus |
| JP2010113282A (en) * | 2008-11-10 | 2010-05-20 | Seiko Epson Corp | Method of driving electrophoretic display device, electrophoretic display device, and electronic device |
| JP2010113281A (en) * | 2008-11-10 | 2010-05-20 | Seiko Epson Corp | Method of driving electrophoretic display device, electrophoretic display device, and electronic device |
| JP2010181618A (en) * | 2009-02-05 | 2010-08-19 | Seiko Epson Corp | Method of driving electrophoretic display device, electrophoretic display device, and electronic apparatus |
| JP2011013685A (en) * | 2010-08-20 | 2011-01-20 | Seiko Epson Corp | Electrophoretic display, controller, and electronic device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9240134B2 (en) | 2012-03-01 | 2016-01-19 | Seiko Epson Corporation | Device for controlling electro-optic device including write section that executes first and second write operations during which different voltages are applied to pixels, method for controlling electro-optic device electro-optic device, and electronic apparatus |
| US9842548B2 (en) | 2012-03-23 | 2017-12-12 | Seiko Epson Corporation | Device for controlling display device, method of controlling display device, display device, and electronic apparatus |
| US9024981B2 (en) | 2012-04-06 | 2015-05-05 | Seiko Epson Corporation | Control device, display device, electronic apparatus and controlling method |
| KR20140091352A (en) * | 2013-01-11 | 2014-07-21 | 엘지디스플레이 주식회사 | Electrophoresis display device and image update method thereof |
| KR102055282B1 (en) * | 2013-01-11 | 2019-12-13 | 엘지디스플레이 주식회사 | Electrophoresis display device and image update method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5845614B2 (en) | 2016-01-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5262211B2 (en) | Electrophoretic display device driving method, electrophoretic display device, and electronic apparatus | |
| JP5125974B2 (en) | Electrophoretic display device driving method, electrophoretic display device, and electronic apparatus | |
| JP2009175492A (en) | Electrophoresis display device, method of driving the same, and electronic apparatus | |
| US9280939B2 (en) | Method of controlling electrophoretic display device, control device for electrophoretic device, electrophoretic device, and electronic apparatus | |
| JP5948730B2 (en) | Control method for electrophoretic display device, control device for electrophoretic display device, electrophoretic display device, and electronic apparatus | |
| JP5768592B2 (en) | Electro-optical device control method, electro-optical device control device, electro-optical device, and electronic apparatus | |
| JP5919639B2 (en) | Control method for electrophoretic display device, control device for electrophoretic display device, electrophoretic display device, and electronic apparatus | |
| JP5845614B2 (en) | Electro-optical device control method, electro-optical device control device, electro-optical device, and electronic apparatus | |
| JP2012237960A (en) | Control method of electro-optic device, control device of electro-optic device, electro-optic device and electronic equipment | |
| US9262972B2 (en) | Method for controlling electro-optic device, device for controlling electro-optic device, electro-optic device, and electronic apparatus | |
| JP5974350B2 (en) | Display device, display device control method, and control device | |
| JP2015138096A (en) | Electrophoretic display device, driving method of the same, control circuit, and electronic apparatus | |
| JP2012237958A (en) | Control method of electro-optic device, control device of electro-optic device, electro-optic device and electronic equipment | |
| JP5982927B2 (en) | Electro-optical device control method, electro-optical device control device, electro-optical device, and electronic apparatus | |
| JP5387452B2 (en) | Driving method of electrophoretic display device | |
| JP2009229850A (en) | Pixel circuit, electrophoretic display device and its driving method, and electronic equipment | |
| JP6710936B2 (en) | Electrophoretic display device and driving method thereof | |
| JP2009237272A (en) | Electrophoretic display device, method of driving the same, and electronic apparatus | |
| JP2011164193A (en) | Method of driving electrophoretic display device | |
| JP6010921B2 (en) | Electro-optical device control method, electro-optical device control device, electro-optical device, and electronic apparatus | |
| JP6476563B2 (en) | Driving apparatus and driving method of electrophoretic display device | |
| JP2012220917A (en) | Control method of electro-optic device, control device of electro-optic device, electro-optic device, and electronic apparatus | |
| JP2013171143A (en) | Electro-optic device control method, electro-optic device control unit, electro-optic device and electronic apparatus | |
| JP2012225981A (en) | Electrophoretic display device and electronic apparatus | |
| US20170018236A1 (en) | Electrophoretic display control device, electrophoretic display, electronic apparatus, and control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20140331 |
|
| RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20150106 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20150128 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20150203 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20150331 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20150630 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20150708 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20151027 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20151109 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 5845614 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |