TWI691774B - Electro-phoretic display and driving method thereof - Google Patents

Electro-phoretic display and driving method thereof Download PDF

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TWI691774B
TWI691774B TW107119645A TW107119645A TWI691774B TW I691774 B TWI691774 B TW I691774B TW 107119645 A TW107119645 A TW 107119645A TW 107119645 A TW107119645 A TW 107119645A TW I691774 B TWI691774 B TW I691774B
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pulse
driving
stage
display
electrophoretic
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TW201930995A (en
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林峰守
邱振愷
鄭智宇
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元太科技工業股份有限公司
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/344—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using 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

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  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

An electro-phoretic display including a display panel and a driving circuit. The display panel is configured to display image frames. The driving circuit is coupled to the display panel. The driving circuit is configured to drive the display panel to display the image frames according to a driving signal. The driving signal includes a first pulse and a second pulse. A driving period of the driving signal includes a first stage, a second period and a driving stage. The first pulse is located before the driving stage, and the second pulse is located in the second period. The pulse width of the first pulse is larger than that of the second pulse. In addition, a driving method of an electro-phoretic display is also provided.

Description

電泳顯示器及其驅動方法Electrophoretic display and its driving method

本發明是有關於一種顯示器及其驅動方法，且特別是有關於一種電泳顯示器及其驅動方法。The invention relates to a display and a driving method thereof, and particularly relates to an electrophoretic display and a driving method thereof.

近年來，由於電子紙顯示器裝置具有輕薄、耐用及符合節能環保的低耗電等優點，市面上已廣泛運用於電子閱讀器(例如，電子書、電子報紙)或其他電子元件(例如，電子標籤)。以電泳顯示器為例，其帶電粒子係依靠內建電場移動，同時也受重力場的影響，所以在垂直擺放時，相對微弱的重力在長時間驅動過程中，會影響內部電泳粒子分佈狀況，進而影響顯示狀態。以現有狀況為例，在垂直驅動過程中，黑色畫面偏黃，主要原因在於連續性的驅動白色電泳粒子與黃色電泳粒子，造成黃色電泳粒子沉降於顯示端，進而影響黑色顯示效果。In recent years, electronic paper display devices have been widely used in electronic readers (for example, e-books, electronic newspapers) or other electronic components (for example, electronic tags) due to their advantages such as thinness, durability, and low power consumption in line with energy saving and environmental protection. ). Taking the electrophoretic display as an example, the charged particles move by the built-in electric field and are also affected by the gravity field. Therefore, when placed vertically, the relatively weak gravity will affect the internal electrophoretic particle distribution during long-term driving. In turn, it affects the display status. Taking the existing situation as an example, during the vertical driving process, the black picture becomes yellowish. The main reason is that the white electrophoretic particles and the yellow electrophoretic particles are continuously driven, causing the yellow electrophoretic particles to settle on the display end, thereby affecting the black display effect.

本發明提供一種電泳顯示器及其驅動方法，可提供良好顯示品質。The invention provides an electrophoretic display and a driving method thereof, which can provide good display quality.

本發明的電泳顯示器包括顯示面板以及驅動電路。顯示面板用以顯示影像畫面。驅動電路耦接至顯示面板。驅動電路用以依據驅動訊號來驅動顯示面板顯示影像畫面。驅動訊號包括第一脈衝及第二脈衝。驅動期間依序包括第一階段、第二階段以及驅動階段。第一脈衝位在驅動階段之前，第二脈衝位在第二階段。第一脈衝的脈衝寬度大於第二脈衝的脈衝寬度。The electrophoretic display of the present invention includes a display panel and a driving circuit. The display panel is used to display the image screen. The driving circuit is coupled to the display panel. The driving circuit is used to drive the display panel to display the image frame according to the driving signal. The driving signal includes a first pulse and a second pulse. The driving period includes the first stage, the second stage, and the driving stage in sequence. The first pulse is before the driving phase, and the second pulse is in the second phase. The pulse width of the first pulse is greater than the pulse width of the second pulse.

本發明的電泳顯示器的驅動方法用以驅動電泳顯示器的顯示面板。驅動方法包括：在驅動期間以第一脈衝來驅動顯示面板；以及在重置階段以第二脈衝來驅動顯示面板。驅動期間依序包括第一階段、重置階段以及驅動階段。第一脈衝位在驅動階段之前，第二脈衝位在重置階段。第一脈衝的脈衝寬度大於第二脈衝的脈衝寬度。The driving method of the electrophoretic display of the present invention is used to drive the display panel of the electrophoretic display. The driving method includes: driving the display panel with a first pulse during driving; and driving the display panel with a second pulse during a reset phase. The driving period includes the first stage, the reset stage, and the driving stage in sequence. The first pulse bit is before the driving phase, and the second pulse bit is in the reset phase. The pulse width of the first pulse is greater than the pulse width of the second pulse.

在本發明的一實施例中，上述的第一階段依序包括平衡階段以及混合階段。In an embodiment of the invention, the above-mentioned first stage includes an equilibrium stage and a mixing stage in sequence.

在本發明的一實施例中，上述的第二階段為重置階段。In an embodiment of the invention, the above-mentioned second stage is a reset stage.

在本發明的一實施例中，上述的第一脈衝位在平衡階段。In an embodiment of the present invention, the above-mentioned first pulse bit is in the balance phase.

在本發明的一實施例中，上述的第一脈衝的脈衝寬度大於第二脈衝的脈衝寬度的兩倍。In an embodiment of the invention, the pulse width of the first pulse described above is greater than twice the pulse width of the second pulse.

在本發明的一實施例中，上述的第一脈衝的脈衝寬度等於第二脈衝的脈衝寬度的十倍。In an embodiment of the invention, the pulse width of the first pulse described above is equal to ten times the pulse width of the second pulse.

在本發明的一實施例中，上述的第一脈衝的脈衝寬度為200毫秒。In an embodiment of the invention, the pulse width of the above-mentioned first pulse is 200 milliseconds.

基於上述，在本發明的示範實施例中，驅動訊號包括位在驅動階段之前的第一脈衝，以此驅動訊號驅動電泳顯示器，以提供良好顯示品質。Based on the above, in the exemplary embodiment of the present invention, the driving signal includes the first pulse before the driving stage, so that the driving signal drives the electrophoretic display to provide good display quality.

為讓本發明的上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。In order to make the above-mentioned features and advantages of the present invention more obvious and understandable, the embodiments are specifically described below in conjunction with the accompanying drawings for detailed description as follows.

為了使本發明之內容可以被更容易明瞭，以下特舉實施例做為本發明確實能夠據以實施的範例。另外，凡可能之處，在圖式及實施方式中使用相同標號的元件/構件/步驟，係代表相同或類似部件。In order to make the content of the present invention easier to understand, the following specific embodiments are taken as examples on which the present invention can indeed be implemented. In addition, wherever possible, elements/components/steps with the same reference numerals in the drawings and embodiments represent the same or similar components.

圖1是依照本發明的一實施例的電泳顯示器的方塊圖。參考圖1，電泳顯示器100包括顯示面板110以及驅動電路120。在本實施例中，電泳顯示器100為一種彩色電泳式顯示設備，並且具有顯示至少三種顏色的顯示效果。顯示面板110包括多個畫素，並且這些畫素分別對應於陣列排列的多個電泳單元，其中這些電泳單元包括三種顏色的電泳粒子。在本實施例中，驅動電路120用以提供驅動訊號至顯示面板110，以驅動在這些電泳單元中的多個電泳粒子。在本實施例中，驅動電路120透過施加電壓的方式來驅動這些電泳粒子在這些電泳單元中移動，以使顯示面板110的各個畫素可分別顯示黑色、白色、灰階或特定顏色。在本實施例中，這些電泳單元例如是微杯結構(Microcup)，並且具有白色電泳粒子、黑色電泳粒子以及彩色電泳粒子。在本發明各實施例中，彩色電泳粒子係指第三電泳粒子，並且彩色電泳粒子可例如是紅色電泳粒子或黃色電泳粒子，但本發明並不限於此。FIG. 1 is a block diagram of an electrophoretic display according to an embodiment of the invention. Referring to FIG. 1, the electrophoretic display 100 includes a display panel 110 and a driving circuit 120. In this embodiment, the electrophoretic display 100 is a color electrophoretic display device, and has a display effect of displaying at least three colors. The display panel 110 includes a plurality of pixels, and the pixels correspond to a plurality of electrophoretic units arranged in an array, wherein the electrophoretic units include electrophoretic particles of three colors. In this embodiment, the driving circuit 120 is used to provide a driving signal to the display panel 110 to drive a plurality of electrophoretic particles in these electrophoretic units. In this embodiment, the driving circuit 120 drives the electrophoretic particles to move in the electrophoretic units by applying a voltage, so that each pixel of the display panel 110 can display black, white, grayscale, or a specific color, respectively. In this embodiment, these electrophoresis units are, for example, a microcup structure (Microcup), and have white electrophoresis particles, black electrophoresis particles, and color electrophoresis particles. In various embodiments of the present invention, the color electrophoretic particles refer to the third electrophoretic particles, and the color electrophoretic particles may be, for example, red electrophoretic particles or yellow electrophoretic particles, but the present invention is not limited thereto.

圖2是依照本發明的一實施例的顯示面板的示意圖。參考圖1以及圖2，圖2為顯示面板110的多個電泳單元的示意圖。在本實施例中，顯示面板110的單一畫素包括上電極層111、多個電泳單元112以及驅動基板113。電泳單元112配置在上電極層111以及驅動基板113之間，並且電泳單元112的顯示側S1靠近於上電極層111。在本實施例中，上電極層111例如是透明電極層。這些電泳單元112各別包括多個第一電泳粒子112A、多個第二電泳粒子112B以及多個彩色電泳粒子112C(即為第三電泳粒子)。電泳單元112的數量，以及電泳單元112的電泳粒子的數量不限於圖2所示。驅動基板113例如包括驅動電晶體，並且驅動電晶體用以接收驅動訊號，以使驅動電泳單元112的第一電泳粒子112A、第二電泳粒子112B以及彩色電泳粒子112C在電泳單元112中移動。2 is a schematic diagram of a display panel according to an embodiment of the invention. Referring to FIGS. 1 and 2, FIG. 2 is a schematic diagram of a plurality of electrophoresis units of the display panel 110. In this embodiment, the single pixel of the display panel 110 includes the upper electrode layer 111, the plurality of electrophoretic units 112, and the driving substrate 113. The electrophoresis unit 112 is disposed between the upper electrode layer 111 and the driving substrate 113, and the display side S1 of the electrophoresis unit 112 is close to the upper electrode layer 111. In this embodiment, the upper electrode layer 111 is, for example, a transparent electrode layer. Each of the electrophoretic units 112 includes a plurality of first electrophoretic particles 112A, a plurality of second electrophoretic particles 112B, and a plurality of color electrophoretic particles 112C (ie, third electrophoretic particles). The number of electrophoretic units 112 and the number of electrophoretic particles of the electrophoretic unit 112 are not limited to those shown in FIG. 2. The driving substrate 113 includes, for example, a driving transistor, and the driving transistor is used to receive a driving signal, so that the first electrophoretic particles 112A, the second electrophoretic particles 112B, and the color electrophoretic particles 112C driving the electrophoretic unit 112 move in the electrophoretic unit 112.

在本實施例中，第一電泳粒子112A可例如是帶負電的白色電泳粒子。第二電泳粒子112B可例如是帶正電的黑色電泳粒子。彩色電泳粒子112C可例如是帶正電的紅色電泳粒子或黃色電泳粒子。在本實施例中，彩色電泳粒子112C的帶電量低於第二電泳粒子112B。也就是說，當驅動基板113施加負電壓時，帶負電的第一電泳粒子112A朝電泳單元112的顯示側S1移動。當驅動基板113施加較高的正電壓時，帶正電的第二電泳粒子112B朝電泳單元112的顯示側S1移動。當驅動基板113施加較低的正電壓時，帶正電的彩色電泳粒子112C朝電泳單元112的顯示側S1移動。第二電泳粒子112B以及彩色電泳粒子112C的移動速度依據驅動基板113施加的正電壓大小而決定。In this embodiment, the first electrophoretic particles 112A may be, for example, negatively charged white electrophoretic particles. The second electrophoretic particles 112B may be positively charged black electrophoretic particles, for example. The color electrophoretic particles 112C may be, for example, positively charged red electrophoretic particles or yellow electrophoretic particles. In this embodiment, the charge amount of the color electrophoretic particles 112C is lower than that of the second electrophoretic particles 112B. That is, when the driving substrate 113 applies a negative voltage, the negatively charged first electrophoretic particles 112A move toward the display side S1 of the electrophoretic unit 112. When the driving substrate 113 applies a higher positive voltage, the positively charged second electrophoretic particles 112B move toward the display side S1 of the electrophoretic unit 112. When the driving substrate 113 applies a low positive voltage, the positively charged color electrophoretic particles 112C move toward the display side S1 of the electrophoretic unit 112. The moving speed of the second electrophoretic particles 112B and the color electrophoretic particles 112C is determined according to the magnitude of the positive voltage applied by the driving substrate 113.

在本實施例中，當驅動電路120驅動電泳單元112顯示特定顏色(紅色或黃色)時，驅動電路120先驅動第一電泳粒子112A(白色)至電泳單元112的顯示側S1，接著驅動第二電泳粒子112B(黑色)至電泳單元112的顯示側S1，最後驅動彩色電泳粒子112C至電泳單元112的顯示側S1。在本實施例中，驅動電路120可分四個階段來提供驅動訊號至驅動基板113，亦即驅動訊號的驅動期間依序包括第一階段、第二階段以及驅動階段(或稱堆疊階段)，其中第一階段可以是平衡階段、混和階段或是依序為平衡階段以及混和階段，本發明第一階段的狀態並不以此為限。第二階段可以是重置階段，本發明第二階段的狀態並不以此為限。In this embodiment, when the driving circuit 120 drives the electrophoretic unit 112 to display a specific color (red or yellow), the driving circuit 120 first drives the first electrophoretic particles 112A (white) to the display side S1 of the electrophoretic unit 112, and then drives the second The electrophoretic particles 112B (black) reach the display side S1 of the electrophoretic unit 112, and finally drive the color electrophoretic particles 112C to the display side S1 of the electrophoretic unit 112. In this embodiment, the driving circuit 120 may provide the driving signal to the driving substrate 113 in four stages, that is, the driving period of the driving signal includes the first stage, the second stage, and the driving stage (or stacking stage) in sequence. The first stage may be an equilibrium stage, a mixing stage, or a balancing stage and a mixing stage in sequence. The state of the first stage of the present invention is not limited to this. The second stage may be a reset stage, and the state of the second stage of the present invention is not limited to this.

圖3是依照本發明的一實施例的驅動訊號波形圖。參考圖1至圖3，在本實施例中，驅動電路120例如以圖3所繪示的訊號波形來驅動第二電泳粒子112B(黑色)至電泳單元112的顯示側S1。因此，在平衡階段中，驅動電路120提供驅動訊號至驅動基板113，以平衡第二電泳粒子112B的電荷。在本實施例中，平衡階段的驅動訊號包括第一脈衝314，其例如為具有脈衝寬度t1的+15伏特的電壓訊號。在一實施例中，第一脈衝314也可以是-15伏特的電壓訊號。FIG. 3 is a driving signal waveform diagram according to an embodiment of the invention. Referring to FIGS. 1 to 3, in this embodiment, the driving circuit 120 drives the second electrophoretic particles 112B (black) to the display side S1 of the electrophoretic unit 112 with the signal waveform shown in FIG. 3, for example. Therefore, in the balancing stage, the driving circuit 120 provides a driving signal to the driving substrate 113 to balance the charges of the second electrophoretic particles 112B. In this embodiment, the driving signal in the balancing stage includes a first pulse 314, which is, for example, a +15 volt voltage signal with a pulse width t1. In an embodiment, the first pulse 314 may also be a voltage signal of -15 volts.

接著，在混合階段中，驅動電路120提供驅動訊號至驅動基板113，以將第一電泳粒子112A、第二電泳粒子112B以及彩色電泳粒子112C均勻地打散。在本實施例中，混合階段的驅動訊號包括交錯排列的多個正脈波訊號323以及多個負脈波訊號324，並且正脈波訊號323用以驅動第一電泳粒子112A，負脈波訊號324用以驅動第二電泳粒子112B以及彩色電泳粒子112C。正脈波訊號323的振幅等於負脈波訊號324的振幅。正脈波訊號323例如是+15伏特的電壓訊號。負脈波訊號324例如是-15伏特的電壓訊號。Next, in the mixing stage, the driving circuit 120 provides a driving signal to the driving substrate 113 to uniformly disperse the first electrophoretic particles 112A, the second electrophoretic particles 112B, and the color electrophoretic particles 112C. In this embodiment, the driving signal in the mixing stage includes a plurality of positive pulse signals 323 and a plurality of negative pulse signals 324 that are staggered, and the positive pulse signal 323 is used to drive the first electrophoretic particles 112A, the negative pulse signal 324 is used to drive the second electrophoretic particles 112B and the color electrophoretic particles 112C. The amplitude of the positive pulse signal 323 is equal to the amplitude of the negative pulse signal 324. The positive pulse signal 323 is, for example, a voltage signal of +15 volts. The negative pulse signal 324 is, for example, a voltage signal of -15 volts.

在重置階段中，驅動電路120提供驅動訊號至驅動基板113，以重置第二電泳粒子112B。在本實施例中，重置階段的驅動訊號包括多個第二脈衝334，以將第二電泳粒子112B驅動至電泳單元112的顯示側S1。在本實施例中，第二脈衝334例如為具有脈衝寬度t0的+15伏特的電壓訊號。然而，在一實施例中，重置訊號例如包括15個第二脈衝334，並且第二脈衝334的每一個的脈衝寬度t0為20毫秒，但本發明並不限於此。在本實施例中，第一脈衝的脈衝寬度約等於第二脈衝的脈衝寬度的十倍。也就是說，脈衝寬度t1為200毫秒，第一脈衝314的脈衝寬度t1大於第二脈衝334的脈衝寬度t0。在一實施例中，第一脈衝的脈衝寬度大於第二脈衝的脈衝寬度的兩倍。據此，第二電泳粒子112B可有效地被推動至電泳單元112的顯示側S1，以改善顯示面板110的顯示品質。In the reset phase, the driving circuit 120 provides a driving signal to the driving substrate 113 to reset the second electrophoretic particles 112B. In this embodiment, the driving signal in the reset phase includes a plurality of second pulses 334 to drive the second electrophoretic particles 112B to the display side S1 of the electrophoretic unit 112. In this embodiment, the second pulse 334 is, for example, a +15 volt voltage signal with a pulse width t0. However, in one embodiment, the reset signal includes, for example, 15 second pulses 334, and the pulse width t0 of each of the second pulses 334 is 20 milliseconds, but the present invention is not limited thereto. In this embodiment, the pulse width of the first pulse is approximately equal to ten times the pulse width of the second pulse. That is, the pulse width t1 is 200 milliseconds, and the pulse width t1 of the first pulse 314 is greater than the pulse width t0 of the second pulse 334. In one embodiment, the pulse width of the first pulse is greater than twice the pulse width of the second pulse. According to this, the second electrophoretic particles 112B can be effectively pushed to the display side S1 of the electrophoretic unit 112 to improve the display quality of the display panel 110.

在圖3的實施例中，雖然是以第一脈衝314位在平衡階段為例，但本發明並不限於此。在其他實施例中，第一脈衝314也可以位在混合階段或重置階段。換句話說，驅動訊號具有位在驅動階段之前的第一脈衝314，以此驅動訊號驅動顯示面板110，可改善其顯示品質。In the embodiment of FIG. 3, although the first pulse 314 bits are in the balance stage as an example, the present invention is not limited to this. In other embodiments, the first pulse 314 may also be in the mixing phase or the reset phase. In other words, the driving signal has the first pulse 314 before the driving stage, so that the driving signal drives the display panel 110, which can improve the display quality.

圖4繪示本發明一實施例之電泳顯示器的驅動方法的步驟流程圖。請參考圖1及圖4，本實施例之驅動方法例如適用於圖1的電泳顯示器100。在步驟S100中，驅動電路120在驅動階段之前以第一脈衝314來驅動顯示面板110；以及在重置階段以第二脈衝334來驅動顯示面板110。另外，本實施例的電泳顯示器的驅動方法可以由圖1至圖3實施例之敘述中獲致足夠的教示、建議與實施說明。FIG. 4 illustrates a flowchart of steps of an electrophoretic display driving method according to an embodiment of the invention. Please refer to FIGS. 1 and 4. The driving method of this embodiment is applicable to the electrophoretic display 100 of FIG. 1, for example. In step S100, the driving circuit 120 drives the display panel 110 with the first pulse 314 before the driving stage; and drives the display panel 110 with the second pulse 334 in the reset stage. In addition, the driving method of the electrophoretic display of this embodiment can obtain sufficient teaching, suggestions, and implementation descriptions from the description of the embodiments of FIGS. 1 to 3.

綜上所述，在本發明的示範實施例中，驅動訊號包括第一脈衝，其可位在驅動階段之前，例如位在平衡階段。因此，驅動訊號在平衡階段包括脈衝寬度大於第二脈衝的第一脈衝。以此驅動訊號來驅動顯示面板，從而電泳顯示器可提供良好顯示品質。In summary, in the exemplary embodiment of the present invention, the driving signal includes the first pulse, which may be located before the driving stage, for example, in the balancing stage. Therefore, the driving signal includes a first pulse with a pulse width greater than the second pulse in the balancing phase. The driving signal is used to drive the display panel, so that the electrophoretic display can provide good display quality.

雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明的精神和範圍內，當可作些許的更動與潤飾，故本發明的保護範圍當視後附的申請專利範圍所界定者為準。Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to the scope defined in the appended patent application.

100‧‧‧電泳顯示器110‧‧‧顯示面板111‧‧‧上電極層112‧‧‧電泳單元112A‧‧‧第一電泳粒子112B‧‧‧第二電泳粒子112C‧‧‧彩色電泳粒子113‧‧‧驅動基板120‧‧‧驅動電路314‧‧‧第一脈衝323、324‧‧‧脈波訊號334‧‧‧第二脈衝t0、t1‧‧‧脈衝寬度S1‧‧‧顯示側S100、S110‧‧‧步驟100‧‧‧Electrophoretic display 110‧‧‧Display panel 111‧‧‧ Upper electrode layer 112‧‧‧Electrophoretic unit 112A‧‧‧First electrophoretic particle 112B‧‧‧Second electrophoretic particle 112C‧‧‧Color electrophoretic particle 113‧ ‧‧Drive substrate 120‧‧‧Drive circuit 314‧‧‧ First pulse 323, 324 ‧‧‧step

圖1是依照本發明的一實施例的電泳顯示器的方塊圖。 圖2是依照本發明的一實施例的顯示面板的示意圖。 圖3是依照本發明的一實施例的驅動訊號波形圖。 圖4繪示本發明一實施例之電泳顯示器的驅動方法的步驟流程圖。FIG. 1 is a block diagram of an electrophoretic display according to an embodiment of the invention. 2 is a schematic diagram of a display panel according to an embodiment of the invention. FIG. 3 is a driving signal waveform diagram according to an embodiment of the invention. FIG. 4 illustrates a flowchart of steps of an electrophoretic display driving method according to an embodiment of the invention.

314‧‧‧第一脈衝 314‧‧‧First pulse

323、324‧‧‧脈波訊號 323, 324‧‧‧ Pulse signal

334‧‧‧第二脈衝 334‧‧‧second pulse

t0、t1‧‧‧脈衝寬度 t0, t1‧‧‧Pulse width

Claims (8)

一種電泳顯示器，包括：一顯示面板，用以顯示一影像畫面；以及一驅動電路，耦接至該顯示面板，用以依據一驅動訊號來驅動該顯示面板顯示該影像畫面，其中該驅動訊號包括一第一脈衝及一第二脈衝，且該驅動訊號的一驅動期間依序包括一第一階段、一第二階段以及一驅動階段，其中該第一脈衝位在該驅動階段之前，該第二脈衝位在該第二階段，且該第一脈衝的脈衝寬度大於該第二脈衝的脈衝寬度，其中該第一階段依序包括一平衡階段以及一混合階段。 An electrophoretic display includes: a display panel for displaying an image screen; and a driving circuit coupled to the display panel for driving the display panel to display the image screen according to a driving signal, wherein the driving signal includes A first pulse and a second pulse, and a driving period of the driving signal includes a first stage, a second stage, and a driving stage in sequence, wherein the first pulse is before the driving stage, and the second The pulse is in the second phase, and the pulse width of the first pulse is greater than the pulse width of the second pulse, wherein the first phase includes a balancing phase and a mixing phase in sequence. 如申請專利範圍第1項所述的電泳顯示器，其中該第二階段為一重置階段。 The electrophoretic display as described in item 1 of the patent application scope, wherein the second stage is a reset stage. 如申請專利範圍第1項所述的電泳顯示器，其中該第一脈衝位在該平衡階段。 The electrophoretic display device as described in item 1 of the patent application range, wherein the first pulse is at the equilibrium stage. 如申請專利範圍第1項所述的電泳顯示器，其中該第一脈衝的脈衝寬度大於該第二脈衝的脈衝寬度的兩倍。 The electrophoretic display as described in item 1 of the patent application range, wherein the pulse width of the first pulse is greater than twice the pulse width of the second pulse. 如申請專利範圍第1項所述的電泳顯示器，其中該第一脈衝的脈衝寬度等於該第二脈衝的脈衝寬度的十倍。 The electrophoretic display according to item 1 of the patent application range, wherein the pulse width of the first pulse is equal to ten times the pulse width of the second pulse. 如申請專利範圍第3項所述的電泳顯示器，其中該第一脈衝的脈衝寬度為200毫秒。 The electrophoretic display as described in item 3 of the patent application, wherein the pulse width of the first pulse is 200 milliseconds. 一種電泳顯示器的驅動方法，用以驅動該電泳顯示器的一顯示面板，所述驅動方法包括： 在一驅動期間以一第一脈衝來驅動該顯示面板，其中該驅動期間依序包括一第一階段、一重置階段以及一驅動階段，以及該第一脈衝位在該驅動階段之前，其中該第一階段依序包括一平衡階段以及一混和階段；以及在該重置階段以一第二脈衝來驅動該顯示面板，以及該第一脈衝的脈衝寬度大於該第二脈衝的脈衝寬度。 A driving method of an electrophoretic display for driving a display panel of the electrophoretic display, the driving method includes: A first pulse is used to drive the display panel during a driving period, wherein the driving period includes a first stage, a reset stage, and a driving stage in sequence, and the first pulse bit precedes the driving stage, wherein the The first stage includes a balancing stage and a mixing stage in sequence; and a second pulse is used to drive the display panel during the reset stage, and the pulse width of the first pulse is greater than the pulse width of the second pulse. 如申請專利範圍第7項所述的電泳顯示器的驅動方法，其中該第一脈衝位在該平衡階段。 The driving method for an electrophoretic display as described in item 7 of the patent application range, wherein the first pulse is at the equilibrium stage.
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