JPH06266309A - Electrophoresis matrix display device - Google Patents

Electrophoresis matrix display device

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Publication number
JPH06266309A
JPH06266309A JP5412793A JP5412793A JPH06266309A JP H06266309 A JPH06266309 A JP H06266309A JP 5412793 A JP5412793 A JP 5412793A JP 5412793 A JP5412793 A JP 5412793A JP H06266309 A JPH06266309 A JP H06266309A
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Japan
Prior art keywords
connected
electrodes
voltage
display
display device
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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.)
Withdrawn
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JP5412793A
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Japanese (ja)
Inventor
Shoji Takano
Yuji Wakimoto
本 雄 二 脇
野 祥 司 高
Original Assignee
Nippon Mektron Ltd
日本メクトロン株式会社
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Application filed by Nippon Mektron Ltd, 日本メクトロン株式会社 filed Critical Nippon Mektron Ltd
Priority to JP5412793A priority Critical patent/JPH06266309A/en
Publication of JPH06266309A publication Critical patent/JPH06266309A/en
Application status is Withdrawn legal-status Critical

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Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3433Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/344Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices

Abstract

PURPOSE: To provide the electrophoresis matrix display device which can make a crosstalk-free display by applying a voltage, element by element, according to display contents.
CONSTITUTION: The display device has an entire-surface electrode as one electrode and divided electrodes to which a voltage can be applied individually as the other electrodes and is provided with a couple of transistors(TR) Q1 and Q2 which have their emitters and collectors cascaded so that one end terminal is connected to a plus power source, the other end is connected to a minus power source, and an output terminal T is connected to between them and also have their bases connected to diodes D1 and D2 in series so that the conduction directions are different, TP by TR. Further, the device is equipped with a switching circuit SC which applies a plus and a minus voltage to one of the divided electrodes, a 1st switch SW1 which connect the plus and minus power sources to the emitters and collectors of the couple of TRs, and a 2nd switch SW10 which selectively grounds the base of one of the couple of TRs through the diode.
COPYRIGHT: (C)1994,JPO&Japio

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】本発明は電気泳動作用を利用して表示動作を行う装置に係り、とくに表示動作のために電極に電圧を印加する回路の構成に関する。 The present invention relates relates to a device for performing a display operation by using electrophoresis action, in particular to construction of a circuit for applying a voltage to the electrodes for display operation.

【0002】 [0002]

【従来の技術】電気泳動表示装置は、一組の対向配置された電極間に、たとえば黒色液体分散媒中に白色顔料微粒子を分散せしめた表示用分散系を配し、電極間に書換すべき内容に応じた電界を印加して電気泳動作用を起こし、微粒子を移動させることにより所望内容の表示を行わせるものである。 BACKGROUND ART electrophoretic display device, between a pair of oppositely disposed electrodes, for example, arranged black liquid dispersion medium display dispersions which dispersed the white pigment fine particles in, to be rewritten between the electrodes cause electrophoretic effect by applying an electric field corresponding to the content, in which to perform display of the desired content by moving the fine particles. この場合、印加する電界により微粒子の移動状況が決まり、その状況を透明電極を通して観察するように表示が行われる。 In this case, the electric field applied determines the movement status of the fine particles, display is performed to observe the situation through the transparent electrode.

【0003】表示は、印加される電界の強さ、方向によってコントラストが生じるものであり、対向する2つの電極群のうち一方の組の電極群から選択信号を供給し、 [0003] view, the strength of an applied electric field, which contrast the direction is generated, and supplies the selected signal from one set of electrodes of the two electrode groups opposed to each other,
他方の組の電極群から正電界または負電界を情報信号として供給することにより1素子または1列づつ表示の書換を行う。 Performing one element or column at a time display rewriting of by supplying a positive or negative electric field from the other set of electrodes as an information signal.

【0004】 [0004]

【発明が解決しようとする課題】電界の印加は、選択された素子と選択されていない素子とが識別されて行われればよいのであるが、選択されていない素子にも不要な電圧つまりいわゆるクロストーク電圧が印加されることがあり、表示が不鮮明になる。 Application of the electric field [0006] is an element which is not selected and the selected element is the sufficient if performed is identified, undesirable voltage that is so-called cross to elements that are not selected may talk voltage is applied, the display becomes unclear.

【0005】本発明は上述の点を考慮してなされたもので、表示内容に応じて1素子毎に電圧を印加してクロストークのない表示を行い得る電気泳動マトリクス表示装置を提供することを目的とする。 [0005] The present invention has been made in view of the above, to provide an electrophoretic matrix display device capable of performing display without cross-talk by applying a voltage to each element in accordance with the display contents for the purpose.

【0006】 [0006]

【課題を解決するための手段】上記目的達成のため、本発明では、互いに対向する一組の電極間に、液相分散媒と粒子とを含んだ電気泳動表示用分散系が配されてなり、前記電極間に電界を印加して前記分散媒の泳動を生じさせることにより表示を行う電気泳動マトリクス表示装置において、前記一組の電極は、一方の電極が全面電極で、他方の電極が個別に電圧を印加できる分割電極として構成された表示装置と、エミッタ−コレクタが縦属接続されて一方端が正電源に、他方端が負電源に接続されて両トランジスタの中間に出力端子が接続され、かつ各ベースにはトランジスタ毎に導通方向が異なるようにダイオードが直列接続された一対のトランジスタを有し、前記分割電極の一つに正電圧または負電圧を印加するスイッチング回路と For the purposes achieved SUMMARY OF THE INVENTION In the present invention, between a pair of electrodes facing each other, it is arranged for electrophoretic display dispersion containing a liquid dispersion medium and particles , in an electrophoretic matrix display device which performs display by causing migration of the dispersion medium by applying an electric field between the electrodes, the pair of electrodes, in the entire electrode one electrode, separate the other electrode a display device configured as a split electrode voltage can be applied, emitter - collector is connected to one end cascade-positive power supply, the other end connected to the intermediate output terminal of the connected two transistors to the negative power supply and a switching circuit each base is that such conductive to each transistor different directions diode has a pair of transistors connected in series, applying a positive voltage or a negative voltage to one of said divided electrodes 前記一対のトランジスタのエミッタ−コレクタに正電源および負電源を接続する第1のスイッチと、前記ダイオードを介して前記一対のトランジスタのいづれかのベースを選択的に接地する第2のスイッチと、をそなえた電気泳動マトリクス表示装置、を提供する。 Includes a first switch for connecting the positive and negative voltages to the collector, and a second switch for selectively grounding one of the base Izure of said pair of transistors through the diode - emitter of said pair of transistors electrophoretic matrix display device, to provide.

【0007】 [0007]

【作用】表示装置の全面電極と各分割電極との間に、電界が印加される。 [Acting] between the entire electrode and the divided electrodes of the display device, an electric field is applied. 各分割電極は、スイッチング回路の一対のトランジスタのうちの選択されたものから出力端子を介して電圧が印加される。 The divided electrodes, a voltage is applied through the output terminal from the selected ones of the pair of transistors of the switching circuit. トランジスタの選択は、制御信号に応じて一対のトランジスタの一方のみをオンにすることにより行われる。 Selection of the transistor is performed by turning on only one of the pair of transistors in response to a control signal. この制御信号の経路にダイオードが設けられているから、制御信号の極性に応じて選択されるトランジスタが決まる。 Since the diode in the path of the control signal is provided, the transistor is determined to be selected according to the polarity of the control signal.

【0008】このようにして選択されたトランジスタにより分割電極と全面電極との間に電圧が印加されて表示用分散媒における粒子が泳動作用を行うことにより表示が行われる。 [0008] displayed by performing the particle migration effects in the display dispersant voltage is applied between the way the selection transistors in divided electrodes and the entire electrode is made. そして、選択されないトランジスタには電圧が印加されず、したがって選択されないトランジスタに対応する分割電極は表示を行わない。 Then, no voltage is applied to the unselected transistors, thus divided electrodes corresponding to the non-selected transistor does not perform display.

【0009】 [0009]

【発明の効果】本発明は上述のように、電気泳動マトリクス装置に所望の分割電極につながるトランジスタのみを選択するようにしたため、いわゆるクロストーク電圧が所望外の電極に印加されることがなく、不鮮明な表示となることを防止できる。 According to the present invention as described above, since you to select only the transistor leading to a desired split electrode to the electrophoretic matrix device, without so-called cross-talk voltage is applied to the desired outside electrode, It can be prevented from becoming blurred display.

【0010】 [0010]

【実施例】図1は、本発明を適用する電気泳動マトリクス表示装置の構成を示したものである。 DETAILED DESCRIPTION FIG. 1 is a diagram showing the configuration of an electrophoretic matrix display device to which the present invention is applied. 同図において、 In the figure,
E1は全面電極であり、GNDに接続されて接地状態になる。 E1 is a full-surface electrode, a ground state and is connected to GND. E2は、全面電極E1に対向配置された分割電極であり、各分割電極はそれぞれ端子T1,T2,T3… E2 is a division electrode disposed to face the entire surface electrodes E1, each of the divided electrode terminals T1, T2, T3 ...
Tnに接続されている。 It is connected to the Tn. これらの端子T1,T2,T3 These terminals T1, T2, T3
…Tnは、表示装置が行うべき表示内容に応じて正または負の電源+Vまたは−Vに接続される。 ... Tn are connected to the positive or negative power supply + V or -V depending on the display contents to be performed by the display device.

【0011】そして正の電源+Vに分割電極が接続された端子T1を持つ素子は、図示のように分割電極側に粒子が寄るのに対し、負の電源−Vに接続された端子T2 [0011] Then the element having the positive power supply + terminal T1 of the divided electrodes is connected to the V, terminal T2 while particles is due to the split electrode side as shown, connected to the negative supply -V
を持つ素子は、全面電極側に粒子が寄る。 Element with the particles is due to the entire surface electrode side. この粒子を電気泳動作用で移動させることにより表示の書換を行うことができる。 It is possible to perform rewriting of the display by moving the particles in an electrophoretic effect. 書き換えられた表示は、電圧の印加を停止してもそのままの表示を保つ。 Display rewritten keeps the display as it also stops applying the voltage.

【0012】図2は、図1における各分割電極毎の4つの素子に対して電圧印加を行う回路を示したものである。 [0012] Figure 2 shows a circuit for applying a voltage with respect to the four elements of each divided electrode in FIG. 同図における4つの素子のうち1つについて符号を付して説明する。 It is described by a reference numeral for one of the four elements in FIG.

【0013】この回路は、素子の端子T1,T2,T3 [0013] In this circuit, the terminal of the element T1, T2, T3
…に接続される端子Tを持ったスイッチング回路SCを各素子用にそなえた回路として構成されている。 ... switching circuit SC having a terminal T connected to is configured as a circuit which includes for each element. そして、このスイッチング回路SCは、正の電源+Vおよび負の電源−Vに接続される2つの端子から正、負の電圧が供給され、スイッチSW10を介してGNDに接続される端子1、2のいづれかにより接地されて回路動作を行い、出力を端子Tに生じる。 Then, the switching circuit SC, the two terminals connected to the positive supply + V and a negative power supply -V positive, negative voltage is supplied, the terminals 1 and 2 connected to the GND via the switch SW10 is grounded performs circuit operation by either produces an output to the terminal T. スイッチSW10は、表示装置の表示素子行列における各列毎に設けられており、選択的に切換操作される。 Switch SW10 is provided for each column of the display element matrix of the display device, it is selectively switched operation.

【0014】図3は、図2のスイッチング回路SCの内部構成を詳細に示したものである。 [0014] Figure 3 illustrates in detail the internal configuration of the switching circuit SC of FIG. すなわち、スイッチング要素として2つのトランジスタQ1,Q2を有する。 I.e., having two transistors Q1, Q2 as a switching element. そして各トランジスタQ1,Q2のベースにはダイオードD1,D2が挿入されている。 The diodes D1, D2 is inserted into the base of each transistor Q1, Q2.

【0015】トランジスタQ1はPNPトランジスタであり、同Q2はNPNトランジスタであり、これら両者が直列接続されて正電源+Vおよび負の電源−Vとの間に、スイッチSW1を介して接続されている。 [0015] transistor Q1 is a PNP transistor, the Q2 is NPN transistors, it both between the serially connected positive supply + V and negative power source -V, and is connected via a switch SW1. スイッチSW1は、表示装置の表示素子行列における各行毎に設けられており、選択的に開閉される。 Switch SW1 is provided for each row in a display element matrix of the display device, it is selectively opened and closed.

【0016】またトランジスタQ1,Q2の中間には、 [0016] In addition to the middle of the transistors Q1, Q2 is,
端子Tが接続されている。 Terminal T is connected. そして、トランジスタQ1のベース、エミッタ間に抵抗R1が、またトランジスタQ The base of the transistor Q1, the resistor between the emitters R1 is also the transistor Q
2のベース、エミッタ間に抵抗R2が接続されている。 2 of the base, the resistor R2 is connected between the emitters.
さらに、トランジスタQ1のベースにはダイオードD1 Furthermore, the base of the transistor Q1 is diode D1
が、またトランジスタQ2のベースにはダイオードD2 But also a diode to the base of transistor Q2 D2
が、それぞれベース電流が流れる方向に挿入されている。 But is inserted in a direction, each base current flows.

【0017】この場合、2つのトランジスタの導電形式が、PNPとNPNであって相違するから、ダイオードD1と同D2とはトランジスタに対する向きが反対に接続されている。 [0017] In this case, the conductive type of the two transistors, since different A PNP and NPN, a diode D1 is the same D2 are connected orientations relative transistors reversed. これにより、一対のトランジスタの一方のみにベース電流を流すことができる。 Thus, it is possible to flow only one to the base current of the pair of transistors.

【0018】そして、ダイオードD1およびD2の各他端は、それぞれスイッチSW10の2つの固定端子に各別に接続されている。 [0018] Then, the other ends of the diodes D1 and D2 are connected to each other in the two fixed terminals of the switch SW10. スイッチSW10の切換端子はG Switching terminal of the switch SW10 is G
NDに接続されている。 It is connected to the ND.

【0019】この回路において、スイッチSW1を閉じた状態で、スイッチSW10を固定接点AまたはBに切り換えると、トランジスタQ1またはQ2がターンオンして端子Tに正電源+Vまたは負の電源−Vの電圧を給電する。 [0019] In this circuit, in the closed state of the switch SW1, switch the switch SW10 to the fixed contact A or B, to the terminal T turns on transistor Q1 or Q2 is the voltage of the positive power source + V and negative power source -V to power. これにより表示装置の表示内容が書き換えられる。 Display contents of which the display device is rewritten.

【0020】スイッチSW1を開けば、当該スイッチに接続されたトランジスタは、端子Tに電圧を生じないから表示装置には、書換のための電圧が印加されないから、表示装置の表示内容は変化しない。 Opening the [0020] switch SW1, connected transistor to the switch, the display device because no voltage to the terminal T, since voltage for rewriting is not applied, the display content of the display device is not changed.

【0021】端子Tは、上述のように表示装置の端子T [0021] The terminal T, the terminal T of the display device as described above
1,T2…に接続されるから表示装置が表示動作を行う。 1, T2 ... display device from being connected to perform a display operation. 表示内容の書換を行う場合は、スイッチSW10を切り換える。 If you want to rewrite the display contents, switch the switch SW10.

【0022】図3の回路では、4つの素子に付き行方向および列方向それぞれに2素子づつ2つづつのスイッチSW1SW10が設けられた構成となっているから、これら2つづつのスイッチの切換により1素子毎の表示書換ができる。 [0022] In the circuit of Figure 3, four from each row and column directions in two elements at a time 2 by one of the switches SW1SW10 per element has a configuration which is provided, 1 element by the switching of these two by one of the switch It can display rewriting of each.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の適用対象である電気泳動表示装置の構成を示す図。 It shows the configuration of an electrophoretic display device as an application subject of the present invention; FIG.

【図2】図1に示す表示装置を駆動する回路を示す図。 Figure 2 is a diagram showing a circuit for driving a display device shown in FIG.

【図3】本発明の一実施例における回路の詳細構成を示す図。 Diagram illustrating a detailed configuration of a circuit according to an embodiment of the present invention; FIG.

【符号の説明】 DESCRIPTION OF SYMBOLS

D ダイオード E1 全面電極 E2 分割電極 Q トランジスタ SC スイッチング回路 SW スイッチ T 端子 D diode E1 entire electrode E2 divided electrodes Q transistor SC switching circuit SW switches T terminal

Claims (1)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】互いに対向する一組の電極間に、液相分散媒と粒子とを含んだ電気泳動表示用分散系が配されてなり、前記電極間に電界を印加して前記分散媒の泳動を生じさせることにより表示を行う電気泳動マトリクス表示装置において、 前記一組の電極は、一方の電極が全面電極で、他方の電極が個別に電圧を印加できる分割電極として構成された表示装置と、 エミッタ−コレクタが縦属接続されて一方端が正電源に、他方端が負電源に接続されて両トランジスタの中間に出力端子が接続され、かつ各ベースにはトランジスタ毎に導通方向が異なるようにダイオードが直列接続された一対のトランジスタを有し、前記分割電極の一つに正電圧または負電圧を印加するスイッチング回路と、 前記一対のトランジスタのエミッタ−コレクタに Between [Claim 1] opposing pair of electrodes, it is arranged liquid-phase dispersion medium and electrophoretic display dispersions containing the particles, the dispersion medium by applying an electric field between the electrodes in the electrophoretic matrix display device which performs display by causing migration, the set of electrodes, with the entire surface electrodes one electrode, and the other electrode is a display is configured as divided electrodes a voltage can be applied individually device the emitter - collector in cascaded has been one end a positive power, which the other end is connected to connected to an output terminal middle of both transistors to the negative power supply, and conduction direction is different for each transistor in each base the diode has a pair of transistors connected in series, a switching circuit for applying a positive voltage or negative voltage to one of the divided electrodes, the emitter of the pair of transistors - the collector 電源および負電源を接続する第1のスイッチと、 前記ダイオードを介して前記一対のトランジスタのいづれかのベースを選択的に接地する第2のスイッチと、をそなえた電気泳動マトリクス表示装置。 A first switch for connecting the power supply and the negative power source, a second switch for selectively grounding the base of any of said pair of transistors through the diode, electrophoretic matrix display device provided with.
JP5412793A 1993-03-15 1993-03-15 Electrophoresis matrix display device Withdrawn JPH06266309A (en)

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JPH06266309A true JPH06266309A (en) 1994-09-22

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005326883A (en) * 2000-06-22 2005-11-24 Seiko Epson Corp Method and circuit for driving electrophoretic display device, and electronic equipment
US7019889B2 (en) 2000-06-22 2006-03-28 Seiko Epson Corporation Method and circuit for driving electrophoretic display and electronic device using same
JP2012078874A (en) * 1997-08-28 2012-04-19 E Ink Corp New addressing system for electrophoretic display
JP2013140391A (en) * 2000-06-22 2013-07-18 Seiko Epson Corp Control method of electrophoretic display device, control device of electrophoretic display device, electrophoretic display device, and electronic apparatus
US8624834B2 (en) 2008-10-15 2014-01-07 Samsung Electronics Co., Ltd. Display apparatuses and methods of driving the same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012078874A (en) * 1997-08-28 2012-04-19 E Ink Corp New addressing system for electrophoretic display
JP2005326883A (en) * 2000-06-22 2005-11-24 Seiko Epson Corp Method and circuit for driving electrophoretic display device, and electronic equipment
US7019889B2 (en) 2000-06-22 2006-03-28 Seiko Epson Corporation Method and circuit for driving electrophoretic display and electronic device using same
US7359110B2 (en) 2000-06-22 2008-04-15 Seiko Epson Corporation Method and circuit for driving electrophoretic display and electronic device using same
JP2013140391A (en) * 2000-06-22 2013-07-18 Seiko Epson Corp Control method of electrophoretic display device, control device of electrophoretic display device, electrophoretic display device, and electronic apparatus
JP2013167885A (en) * 2000-06-22 2013-08-29 Seiko Epson Corp Control method of electrophoretic display device, control device of electrophoretic display device, electrophoretic display device and electronic apparatus
USRE44484E1 (en) 2000-06-22 2013-09-10 Seiko Epson Corporation Method and circuit for driving electrophoretic display and electronic device using same
US8624834B2 (en) 2008-10-15 2014-01-07 Samsung Electronics Co., Ltd. Display apparatuses and methods of driving the same
US9311887B2 (en) 2008-10-15 2016-04-12 Samsung Electronics Co., Ltd. Display apparatuses and methods of driving the same

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