WO2012086451A1 - Elément d'affichage et dispositif électrique l'utilisant - Google Patents

Elément d'affichage et dispositif électrique l'utilisant Download PDF

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Publication number
WO2012086451A1
WO2012086451A1 PCT/JP2011/078745 JP2011078745W WO2012086451A1 WO 2012086451 A1 WO2012086451 A1 WO 2012086451A1 JP 2011078745 W JP2011078745 W JP 2011078745W WO 2012086451 A1 WO2012086451 A1 WO 2012086451A1
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WIPO (PCT)
Prior art keywords
electrode
display
polar liquid
scanning
display element
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PCT/JP2011/078745
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English (en)
Japanese (ja)
Inventor
松岡俊樹
寺西知子
植木俊
友利拓馬
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シャープ株式会社
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Publication of WO2012086451A1 publication Critical patent/WO2012086451A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/004—Optical devices or arrangements for the control of light using movable or deformable optical elements based on a displacement or a deformation of a fluid
    • G02B26/005—Optical devices or arrangements for the control of light using movable or deformable optical elements based on a displacement or a deformation of a fluid based on electrowetting
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/124—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode interdigital

Definitions

  • the present invention relates to a display element that displays information such as images and characters by moving a polar liquid, and an electrical device using the display element.
  • a display space is formed between the first and second substrates, and ribs (partitions) are formed.
  • the interior of the display space is partitioned according to a plurality of pixel regions by a wall.
  • a conductive liquid (polar liquid) is sealed, and a signal electrode, a scan electrode and a reference electrode (reference electrode) provided in parallel to each other are provided. It was provided to cross.
  • the conductive liquid is moved to the scan electrode side or the reference electrode side to display. The display color on the face side was changed.
  • the conventional display element as described above may not be able to change the display color with high accuracy.
  • the conductive liquid cannot be accurately moved to a desired position, and a subtle color shift occurs, resulting in a deterioration in display quality. There was a fear.
  • the pixel region in order to improve the moving speed of the conductive liquid inside the pixel region, the pixel region is not completely sealed by the rib, and is configured in a rectangular shape, for example. In the four corners of the pixel area, there are provided gaps that allow the interiors of adjacent pixel areas to communicate with each other. Further, in the conventional display element, in order to improve the moving speed of the conductive liquid, oil (insulating fluid) that does not mix with the conductive liquid is movably enclosed in the pixel region. For this reason, in the conventional display element, depending on the size of the gap, the material of the conductive liquid or oil, or the moving speed of the conductive liquid, any one of the four corners from the adjacent pixel region to the conductive liquid. The oil that has flowed through the gap sometimes moved slightly.
  • the conductive liquid moves slightly as described above, when the next display operation is performed, the voltage corresponding to the display operation is accurately applied to the signal electrode.
  • the conductive liquid may not move with high accuracy to the position to be positioned in the display operation.
  • an object of the present invention is to provide a display element that can prevent display quality from being deteriorated even when gradation display is performed, and an electric device using the display element.
  • the display element according to the present invention is configured such that a predetermined display space is formed between the first substrate provided on the display surface side and the first substrate. , The second substrate provided on the non-display surface side of the first substrate, the effective display area and the non-effective display area set for the display space, and the effective inside the display space.
  • a display element configured to change a display color on the display surface side by moving the polar liquid, the polar liquid being movably sealed on the display area side or the ineffective display area side
  • a plurality of signal electrodes disposed in the display space so as to be in contact with the polar liquid and provided along a predetermined arrangement direction; Provided on one side of the first and second substrates in a state of being electrically insulated from the polar liquid so as to be installed on one side of the effective display area side and the non-effective display area side.
  • a plurality of scanning electrodes provided to intersect with the plurality of signal electrodes, A plurality of pixel regions provided in a unit of intersection between the signal electrode and the scanning electrode; A rib provided on at least one side of the first and second substrates so as to hermetically divide the inside of the display space according to each of the plurality of pixel regions, and the inside of the display space It is enclosed in a movable manner for each pixel region, and has an insulating fluid that does not mix with the polar liquid, Inside the display space, when the polar liquid is moved for each pixel area, the scanning electrode is arranged so that the flow path of the insulating fluid in the display space becomes large. It is provided on one side of the first and second substrates.
  • the interior of the display space is hermetically separated by ribs according to a plurality of pixel areas.
  • the insulating fluid can be prevented from flowing from the adjacent pixel area, and the minute movement of the polar liquid by the insulating fluid from the adjacent pixel area can be prevented. it can.
  • the first and second scan electrodes are arranged so that the flow path of the insulating fluid in the display space becomes large. Is provided on one side of the substrate. Accordingly, when the polar liquid is moved when the display color is changed, the polar liquid can be smoothly and appropriately moved. Therefore, unlike the conventional example, it is possible to configure a display element that can prevent display quality from being deteriorated even when gradation display is performed.
  • the scanning electrode is provided so as to move in a shape different from the shape when the polar liquid is stationary.
  • the flow path of the insulating fluid can be surely secured, and the flow path of the insulating fluid can be surely enlarged.
  • the scanning electrode is provided so that a dimension of the polar liquid changes in an orthogonal direction orthogonal to a moving direction of the polar liquid.
  • the scan electrode may be formed in an asymmetric shape in the pixel region.
  • the flow path of the insulating fluid can be ensured in the pixel region by the scanning electrode configured in an asymmetric shape, and the flow path of the insulating fluid can be enlarged.
  • the dimension of the scanning electrode in the orthogonal direction orthogonal to the moving direction of the polar liquid may change along the moving direction.
  • the flow path of the insulating fluid can be secured in the orthogonal direction, and the flow path of the insulating fluid can be enlarged.
  • the dimension of the scanning electrode in an orthogonal direction perpendicular to the moving direction of the polar liquid continuously changes along the moving direction.
  • the scanning electrode may be configured to have a symmetrical shape in the pixel region.
  • the flow path of the insulating fluid can be secured in the pixel region by the scanning electrode having a symmetrical shape, and the flow path of the insulating fluid can be enlarged.
  • the scanning electrode may be provided with a protruding portion protruding to the other side.
  • the flow path of the insulating fluid can be increased by securing the flow path of the insulating fluid in the pixel region by the protruding portions of the scanning electrodes.
  • the scan electrode may be formed so that a gap is provided in an orthogonal direction orthogonal to the moving direction of the polar liquid.
  • the flow path of the insulating fluid can be secured in the pixel region by the gap portion, and the flow path of the insulating fluid can be enlarged.
  • the signal voltage is connected to the plurality of signal electrodes, and a signal voltage within a predetermined voltage range is applied to each of the plurality of signal electrodes according to information displayed on the display surface side.
  • a selection voltage that is connected to the plurality of scan electrodes and that allows the polar liquid to move within the display space in response to the signal voltage for each of the plurality of scan electrodes;
  • the display color of each pixel area can be changed appropriately.
  • the plurality of pixel regions may be provided in accordance with a plurality of colors capable of full color display on the display surface side.
  • a color image can be displayed by appropriately moving the corresponding polar liquid in each of the plurality of pixels.
  • the first liquid electrode is electrically insulated from the polar liquid and the scan electrode so as to be installed on the other side of the effective display area side and the ineffective display area side.
  • a plurality of reference electrodes provided on one side of the first and second substrates and provided to intersect with the plurality of signal electrodes;
  • a selection voltage that is connected to the plurality of reference electrodes and that allows the polar liquid to move within the display space in response to the signal voltage for each of the plurality of reference electrodes; It is preferable that a reference voltage application unit that applies one voltage of a non-selection voltage that prevents the polar liquid from moving inside the display space is provided.
  • a dielectric layer is laminated on the surfaces of the reference electrode and the scanning electrode.
  • the electric field applied to the polar liquid by the dielectric layer can be reliably increased, and the moving speed of the polar liquid can be improved more easily.
  • the ineffective display area is set by a light shielding film provided on one side of the first and second substrates,
  • the effective display area is preferably set by an opening formed in the light shielding film.
  • the electrical device of the present invention is an electrical device including a display unit that displays information including characters and images, Any one of the display elements described above is used for the display portion.
  • the display unit having an excellent display quality. It is possible to easily configure a high-performance electric device provided with
  • the present invention it is possible to provide a display element that can prevent display quality from being deteriorated even when gradation display is performed, and an electric device using the display element.
  • FIG. 1 is a plan view for explaining a display element and an image display apparatus according to a first embodiment of the present invention.
  • FIG. 2 is an enlarged plan view showing a main configuration of the upper substrate side shown in FIG. 1 when viewed from the display surface side.
  • FIG. 3 is an enlarged plan view showing a main configuration of the lower substrate side shown in FIG. 1 when viewed from the non-display surface side.
  • FIG. 4 is an enlarged plan view showing a main part configuration in one pixel region of the display element.
  • FIG. 5A and FIG. 5B are cross-sectional views showing the main configuration of the display element shown in FIG. 1 during non-CF color display and CF color display, respectively.
  • FIG. 6 (a) to 6 (c) are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • FIG. 7 is a diagram for explaining an operation example of the image display device.
  • FIG. 8 is an enlarged plan view showing a main part configuration in one pixel region of the display element according to the second embodiment of the present invention.
  • FIG. 9A to FIG. 9C are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • FIG. 10 is an enlarged plan view showing the main configuration of one pixel region of the display element according to the third embodiment of the present invention.
  • FIG. 11A to FIG. 11C are diagrams for explaining the operation of the polar liquid and oil shown in FIG. FIG.
  • FIG. 12 is an enlarged plan view showing a main part configuration in one pixel region of the display element according to the fourth embodiment of the present invention.
  • FIGS. 13A to 13C are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • FIG. 14 is an enlarged plan view showing a main part configuration in one pixel region of the display element according to Embodiment 5 of the present invention.
  • FIG. 15A to FIG. 15C are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • FIG. 16 is an enlarged plan view showing a main part configuration in one pixel region of a display element according to Embodiment 6 of the present invention.
  • 17 (a) to 17 (c) are diagrams for explaining the operation of the polar liquid and oil shown in FIG. FIG.
  • FIG. 18 is an enlarged plan view showing a main part configuration in one pixel region of a display element according to Embodiment 7 of the present invention.
  • FIGS. 19A to 19C are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • FIG. 20 is an enlarged plan view showing the main configuration of one pixel region of the display element according to the eighth embodiment of the present invention.
  • 21 (a) to 21 (c) are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • FIG. 22 is an enlarged plan view showing the main configuration of one pixel area of the display element according to Embodiment 9 of the present invention.
  • FIG. 23A to FIG. 23C are diagrams for explaining the operation of the polar liquid and oil shown in FIG. FIG.
  • FIG. 24 is an enlarged plan view showing a main part configuration in one pixel region of the display element according to the tenth embodiment of the present invention.
  • 25 (a) to 25 (c) are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • FIG. 26 is an enlarged plan view showing a main part configuration in one pixel region of the display element according to the eleventh embodiment of the present invention.
  • 27 (a) to 27 (c) are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • FIG. 28 is an enlarged plan view showing a main part configuration in one pixel region of the display element according to the twelfth embodiment of the present invention.
  • 29 (a) to 29 (c) are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • FIG. 1 is a plan view for explaining a display element and an image display apparatus according to a first embodiment of the present invention.
  • a display unit using the display element 10 of the present invention is provided, and a rectangular display surface is configured in the display unit. That is, the display element 10 includes an upper substrate 2 and a lower substrate 3 arranged so as to overlap each other in a direction perpendicular to the paper surface of FIG. An effective display area on the display surface is formed (details will be described later).
  • a plurality of signal electrodes 4 are provided in stripes along the X direction at a predetermined interval from each other.
  • a plurality of reference electrodes 5 and a plurality of scanning electrodes 6 are provided alternately in a stripe pattern along the Y direction.
  • the plurality of signal electrodes 4, the plurality of reference electrodes 5, and the plurality of scan electrodes 6 are provided so as to intersect with each other.
  • the signal electrodes 4 and the scan electrodes 6 are in units of intersections. A plurality of pixel areas are set.
  • the plurality of signal electrodes 4, the plurality of reference electrodes 5, and the plurality of scan electrodes 6 are independently of each other a high voltage (hereinafter referred to as “H voltage”) as a first voltage and a second voltage.
  • H voltage high voltage
  • L voltage low voltage
  • the plurality of pixel regions are hermetically separated by ribs (partition walls), and the plurality of pixel regions can be displayed in full color on the display surface side. It is provided for each of a plurality of colors.
  • a polar liquid described later is moved by an electrowetting phenomenon for each of a plurality of pixels (display cells) provided in a matrix, and the display color on the display surface side is changed. ing.
  • the plurality of reference electrodes 5, and the plurality of scanning electrodes 6, one end side is drawn out to the outside of the effective display area of the display surface to form terminal portions 4a, 5a, and 6a. ing.
  • a signal driver 7 is connected to each terminal portion 4a of the plurality of signal electrodes 4 via a wiring 7a.
  • the signal driver 7 constitutes a signal voltage application unit.
  • the signal driver 7 responds to the information for each of the plurality of signal electrodes 4.
  • the signal voltage Vd is applied.
  • a reference driver 8 is connected to each terminal portion 5a of the plurality of reference electrodes 5 via a wiring 8a.
  • the reference driver 8 constitutes a reference voltage application unit.
  • the reference driver 8 applies the reference voltage Vr to each of the plurality of reference electrodes 5. Is applied.
  • a scanning driver 9 is connected to each terminal portion 6a of the plurality of scanning electrodes 6 via a wiring 9a.
  • the scanning driver 9 constitutes a scanning voltage application unit.
  • the scanning voltage Vs is applied to each of the plurality of scanning electrodes 6. Is applied.
  • a non-selection voltage that prevents the polar liquid from moving with respect to each of the plurality of scan electrodes 6, and a selection voltage that allows the polar liquid to move according to the signal voltage Vd is applied as the scanning voltage Vs.
  • the reference driver 8 is configured to operate with reference to the operation of the scanning driver 9, and the reference driver 8 prevents the polar liquid from moving with respect to each of the plurality of reference electrodes 5.
  • One voltage of the non-selection voltage and the selection voltage that allows the polar liquid to move according to the signal voltage Vd is applied as the reference voltage Vr.
  • the scanning driver 9 sequentially applies the selection voltage to the scanning electrodes 6 from the left side to the right side of FIG. 1, for example, and the reference driver 8 is synchronized with the operation of the scanning driver 9.
  • the scanning operation is performed for each line by sequentially applying a selection voltage to the reference electrodes 5 from the left side to the right side of 1 (details will be described later).
  • the signal driver 7, the reference driver 8, and the scanning driver 9 include a DC power supply or an AC power supply, and supply corresponding signal voltage Vd, reference voltage Vr, and scanning voltage Vs. .
  • the reference driver 8 is configured to switch the polarity of the reference voltage Vr every predetermined time (for example, one frame).
  • the scanning driver 9 is configured to switch each polarity of the scanning voltage Vs in response to switching of the polarity of the reference voltage Vr.
  • FIG. 2 is an enlarged plan view showing a main configuration of the upper substrate side shown in FIG. 1 when viewed from the display surface side.
  • FIG. 3 is an enlarged plan view showing a main configuration of the lower substrate side shown in FIG. 1 when viewed from the non-display surface side.
  • FIG. 4 is an enlarged plan view showing a main part configuration in one pixel region of the display element.
  • FIG. 5A and FIG. 5B are cross-sectional views showing the main configuration of the display element shown in FIG. 1 during non-CF color display and CF color display, respectively.
  • 6 (a) to 6 (c) are diagrams for explaining the operation of the polar liquid and oil shown in FIG. 2 and 3, for simplification of the drawings, of the plurality of pixels provided on the display surface, twelve pixels arranged at the upper left end portion of FIG. 1 are illustrated. .
  • the display element 10 includes the upper substrate 2 as the first substrate provided on the display surface side and the second substrate provided on the back side (non-display surface side) of the upper substrate 2.
  • the lower substrate 3 as a substrate is provided.
  • the upper substrate 2 and the lower substrate 3 are arranged at a predetermined distance from each other, so that a predetermined display space S is formed between the upper substrate 2 and the lower substrate 3. .
  • the polar liquid 16 and the insulating oil 17 not mixed with the polar liquid 16 are arranged in the X direction (left and right direction in FIG. 2) in the display space S.
  • the polar liquid 16 can be moved to the later-described effective display area P1 side or the non-effective display area P2 side.
  • the oil 17 as the insulating fluid in the display space S is transferred.
  • the reference electrode 5 and the scanning electrode 6 are provided on the lower substrate 3 side so that the flow path becomes large.
  • the oil 17 can be smoothly and appropriately moved to the effective display area P1 side or the non-effective display area P2 side in accordance with the movement of the polar liquid 16. ing.
  • the polar liquid 16 for example, an aqueous solution containing water as a solvent and a predetermined electrolyte as a solute is used. Specifically, for example, an aqueous solution of 1 mmol / L potassium chloride (KCl) is used for the polar liquid 16.
  • the polar liquid 16 is a predetermined color, for example, a color colored black with a self-dispersing pigment.
  • the polar liquid 16 is colored black, the polar liquid 16 functions as a shutter that allows or blocks light transmission in each pixel. That is, in each pixel of the display element 10, as will be described in detail later, the polar liquid 16 moves inside the display space S on the reference electrode 5 side (effective display region P1 side) or on the scanning electrode 6 side (non-effective display region P2). The display color is changed to either black or RGB by sliding to the side).
  • the oil 17 is a non-polar, colorless and transparent oil composed of one or more selected from, for example, side chain higher alcohol, side chain higher fatty acid, alkane hydrocarbon, silicone oil, and matching oil. It has been.
  • the oil 17 moves in the display space S as the polar liquid 16 slides.
  • a transparent glass material such as a non-alkali glass substrate or a transparent transparent sheet material such as a transparent synthetic resin such as an acrylic resin is used.
  • a color filter layer 11 and a signal electrode 4 are sequentially formed on the surface of the upper substrate 2 on the non-display surface side, and a water repellent film 12 is provided so as to cover the color filter layer 11 and the signal electrode 4. It has been.
  • the lower substrate 3 is made of a transparent glass material such as a transparent glass material such as a non-alkali glass substrate or a transparent synthetic resin such as an acrylic resin, like the upper substrate 2.
  • the reference electrode 5 and the scan electrode 6 are provided on the surface of the lower substrate 3 on the display surface side, and a dielectric layer 13 is formed so as to cover the reference electrode 5 and the scan electrode 6. Is formed. Further, as will be described later in detail, the reference electrode 5 and the scanning electrode 6 are configured to be asymmetrical to each other in the pixel region P, and the flow path of the oil 17 is used when the polar liquid 16 is moved. Is getting bigger.
  • the first rib member 14a provided along the Y direction, that is, the orthogonal direction orthogonal to the moving direction of the polar liquid 16, and the X direction, that is, the polarity.
  • a rib 14 having a second rib member 14b provided along a direction parallel to the moving direction of the liquid 16 is provided.
  • the ribs 14 are provided so as to hermetically divide the inside of the display space S in accordance with the pixel region P, and are configured in a frame shape for each pixel region P as illustrated in FIG.
  • a water repellent film 15 is provided so as to cover the dielectric layer 13 and the first and second rib members 14a and 14b.
  • a backlight 18 that emits white illumination light is integrally assembled on the back side (non-display surface side) of the lower substrate 3, and the transmissive display element 10 is configured.
  • the backlight 18 uses a light source such as a cold cathode fluorescent tube or an LED.
  • the color filter layer 11 includes red (R), green (G), and blue (B) color filter portions 11r, 11g, and 11b, and a black matrix portion 11s as a light shielding film.
  • the pixels of each color of RGB are configured. That is, in the color filter layer 11, as illustrated in FIG. 3, RGB color filter portions 11r, 11g, and 11b are sequentially provided along the X direction, and each of the four color filter portions 11r, 11g, and 11b is Y. A total of 12 pixels are arranged in the X direction and the Y direction, respectively, 3 pixels and 4 pixels.
  • any one of RGB color filter portions 11 r, 11 g, and 11 b is provided at a location corresponding to the effective display region P 1 of the pixel.
  • a black matrix portion 11s is provided at a location corresponding to the ineffective display area P2. That is, in the display element 10, an ineffective display region P2 (non-opening portion) is set for the display space S by the black matrix portion (light-shielding film) 11s, and an opening portion (non-opening portion) formed in the black matrix portion 11s ( That is, the effective display area P1 is set by any one of the color filter portions 11r, 11g, and 11b).
  • the area of the color filter portions 11r, 11g, and 11b is selected to be the same or slightly smaller than the area of the effective display area P1.
  • the area of the black matrix portion 11s is selected to be the same or slightly larger than the area of the ineffective display area P2.
  • FIG. 2 in order to clarify the boundary portion between adjacent pixels, the boundary line between the two black matrix portions 11s corresponding to the adjacent pixels is indicated by a dotted line, but the actual color filter layer 11 Then, there is no boundary line between the black matrix portions 11s.
  • the display space S is divided in units of pixel areas P by the ribs 14 as the partition walls. That is, in the display element 10, the display space S of each pixel is formed by two first rib members 14a facing each other and two second rib members 14b facing each other, as illustrated in FIG. A frame-like rib 14 is provided for each pixel region P. Further, in the display element 10, the first and second rib members 14 a and 14 b are provided so that the tip portions thereof are in contact with the upper substrate 2, and the ribs 14 correspond to the display area according to the pixel region P. The interior of S is configured to be hermetically separated. Further, for example, an epoxy resin resist material is used for the first and second rib members 14a and 14b.
  • the water-repellent films 12 and 15 are made of a transparent synthetic resin, preferably, for example, a fluorine resin that becomes a hydrophilic layer with respect to the polar liquid 16 when a voltage is applied. Thereby, in the display element 10, the wettability (contact angle) between the polar liquid 16 on each surface side on the display space S side of the upper substrate 2 and the lower substrate 3 can be greatly changed. The moving speed of 16 can be increased.
  • the dielectric layer 13 is made of a transparent dielectric film containing, for example, parylene, silicon nitride, hafnium oxide, zinc oxide, titanium dioxide, or aluminum oxide.
  • each of the water repellent films 12 and 15 is several tens of nm to several ⁇ m, and the specific thickness dimension of the dielectric layer 13 is several hundred nm. Further, the water repellent film 12 does not electrically insulate the signal electrode 4 from the polar liquid 16 and does not hinder the improvement of the response of the polar liquid 16.
  • a transparent electrode material such as indium oxide (ITO), tin oxide (SnO 2 ), or zinc oxide (AZO, GZO, or IZO) is used.
  • ITO indium oxide
  • SnO 2 tin oxide
  • AZO zinc oxide
  • GZO GZO
  • IZO zinc oxide
  • the signal electrode 4 uses a linear wiring arranged so as to be parallel to the X direction.
  • the signal electrode 4 is made of a transparent electrode material such as ITO.
  • the signal electrode 4 is formed on each pixel region P on the color filter layer 11 by a known film formation method such as sputtering or printing. Are arranged so as to pass through substantially the center in the Y direction, and are configured to be in electrical contact with the polar liquid 16 via the water repellent film 12. Thereby, in the display element 10, the response of the polar liquid 16 during the display operation is improved.
  • FIG. 4 and FIGS. 6 (a) to 6 (c) the shapes of the reference electrode 5 and the scanning electrode 6 and their functions will be described in detail.
  • the signal electrode 4, the dielectric layer 13, and the water repellent films 12 and 15 are not shown for simplification of the drawing.
  • the reference electrode 5 has a concave shape in the pixel region P
  • the scan electrode 6 has a convex shape in the pixel region P. It is used.
  • the reference electrode 5 and the scan electrode 6 are configured to be asymmetric with respect to each other in the pixel region P, and the reference electrode 5 and the scan electrode 6 have polarities.
  • the liquid 16 is provided so as to move in a shape different from that when the liquid 16 is stationary.
  • the reference electrode 5 and the scanning electrode 6 are provided so that the dimension of the polar liquid 16 changes in the orthogonal direction orthogonal to the moving direction of the polar liquid 16.
  • the reference electrodes 5 are provided in a rectangular shape within the pixel region P, and are continuously provided on the main body 5a, and are parallel to each other in the X direction from the main body 5a.
  • the two protruding portions 5b protruding to the scanning electrode 6 side and the second rib member 14b are provided below, and the main body portions 5a of the reference electrodes 5 in the pixel region P adjacent in the Y direction are connected to each other.
  • a connecting portion 5c to be connected is provided.
  • the scanning electrode 6 is provided in a rectangular shape within the pixel region P, and is continuously provided on the main body portion 6a, and protrudes from the main body portion 6a toward the reference electrode 5 in the X direction.
  • the projection 6b is provided below the second rib member 14b, and a connecting portion 6c for connecting the main body portions 6a of the scanning electrodes 6 in the pixel region P adjacent in the Y direction is provided.
  • the reference electrode 5 and the scanning electrode 6 are configured such that the protruding portion 6b of the scanning electrode 6 is disposed between the two protruding portions 5b of the reference electrode 5, as shown in FIG.
  • the main body portion 5a and the protruding portion 5b substantially constitute an electrode portion that functions as an electrode. That is, when a predetermined voltage is applied to the reference electrode 5, an electrowetting phenomenon occurs on the surface of the lower substrate 3 on the display surface side in the portion where the main body portion 5a and the protruding portion 5b are provided, The wettability (contact angle) of the polar liquid 16 changes, and the polar liquid 16 becomes movable.
  • the main body portion 6a and the protruding portion 6b substantially constitute an electrode portion that functions as an electrode.
  • the polar liquid 16 is, for example, from the position shown in FIG. 6A to the right side (black matrix) of FIG.
  • a voltage to be moved to the part 11 s side is applied, on the surface of the dielectric layer 13 covering the reference electrode 5 and the scanning electrode 6 on the lower substrate 3, the main body part 5 a and the protruding part 5 b of the reference electrode 5 and the scanning electrode 6, the wettability (contact angle) of the polar liquid 16 with respect to the surface changes due to the electrowetting phenomenon at the upper part of the main body 5a and the protrusion 6b.
  • the polar liquid 16 has a shape when it is stationary so that the dimension of the polar liquid 16 in the orthogonal direction orthogonal to the moving direction changes. It moves in the direction indicated by arrow F1 while being deformed. For this reason, in the display space S, according to the deformation of the polar liquid 16, a flow path of the oil 17 can be secured in the upper part and the lower part of the polar liquid 16 in FIG. The oil 17 moves along the flow path in the direction indicated by the arrow F2.
  • the polar liquid 16 and the oil 17 move to the scanning electrode 6 side and the reference electrode 5 side, respectively, and the polar liquid 16 is, as illustrated in FIG. It is completely moved to the scanning electrode 6 side (black matrix portion 11s side) and becomes stationary.
  • the dimension of the polar liquid 16 in the stationary direction in the moving direction (X direction) of the polar liquid 16 indicated by “L1” in FIG. The dimension of the overlapping part of the protrusions 5b and 6b in the moving direction (X direction) of the polar liquid 16 indicated by “L2” in FIG.
  • the dimension L2 of the overlapping portion is configured to be larger than the dimension L1 of the polar liquid 16
  • the reference electrode 5 side that is not a desired destination or There is a possibility of moving to the scan electrode 6 side.
  • the dimension L2 of the overlapping portion is configured to be smaller than the dimension L1 of the polar liquid 16
  • the desired reference electrode 5 when the polar liquid 16 is positioned (stopped) on the overlapping portion, the desired reference electrode 5 to be moved to. This is because the polar liquid 16 can be reliably moved to the desired reference electrode 5 side or the scan electrode 6 side by the main body portion 5 a or the main body portion 6 a of the scan electrode 6.
  • the reference electrode 5 and the scanning electrode 6 are configured to be asymmetric with each other in the pixel region P, so that the movement operation of the polar liquid 16 (for example, the scanning operation described later) 6), it is preferable to perform a refresh operation for moving the polar liquid 16 to the reference electrode 5 side as shown in FIG. That is, for example, as shown in FIG. 6A, in the scanning electrode 6, the protruding portion 6 b is provided at the center in the orthogonal direction (Y direction) orthogonal to the moving direction of the polar liquid 16.
  • the two protruding portions 5b are provided on the outer side (that is, the upper side and the lower side) in the orthogonal direction with respect to the protruding portion 6b. Therefore, the protruding portion 6 b of the scanning electrode 6 is easier to deform the polar liquid 16 in the orthogonal direction than the protruding portion 5 b of the reference electrode 5, thereby easily securing the flow path of the oil 17. As a result, the moving speed of the polar liquid 16 can be improved. Therefore, in the display element 10 of the present embodiment, when the refresh operation as described above is performed, the movement to the reference electrode 5 side during the scanning operation described later is performed as compared with the case where the refresh operation is not performed. This is because time can be omitted and the display color changing speed in the scanning operation can be improved.
  • FIG. 7 is a diagram for explaining an operation example of the image display device.
  • the reference driver 8 and the scanning driver 9 select the reference voltage Vr and the scanning voltage Vs as the reference voltage Vr and the scanning voltage Vs, respectively, for the reference electrode 5 and the scanning electrode 6 in a predetermined scanning direction from the left side to the right side in FIG. Apply voltage sequentially. Specifically, the reference driver 8 and the scan driver 9 sequentially apply an H voltage (first voltage) and an L voltage (second voltage) as selection voltages to the reference electrode 5 and the scan electrode 6, respectively. The scanning operation for selecting the line is performed. In this selection line, the signal driver 7 applies the H voltage or the L voltage as the signal voltage Vd to the corresponding signal electrode 4 according to the image input signal from the outside.
  • the polar liquid 16 is moved to the effective display area P1 side or the non-effective display area P2 side, and the display color on the display surface side is changed.
  • the oil 17 is moved to the ineffective display area P2 side or the effective display area P1 side opposite to the movement destination of the polar liquid 16.
  • the reference driver 8 and the scan driver 9 apply the non-selection voltage as the reference voltage Vr and the scan voltage Vs to the non-selected lines, that is, all the remaining reference electrodes 5 and scan electrodes 6, respectively.
  • the reference driver 8 and the scan driver 9 apply an intermediate voltage (Middle) that is, for example, an intermediate voltage between the H voltage and the L voltage to the remaining reference electrodes 5 and scan electrodes 6 as non-selection voltages. Voltage, hereinafter referred to as “M voltage”).
  • H voltage, L voltage, and M voltage are abbreviated as “H”, “L”, and “M”, respectively (the same applies to Table 2 described later).
  • Specific values of the H voltage, the L voltage, and the M voltage are, for example, + 16V, 0V, and + 8V, respectively. Yes.
  • ⁇ Operation on selected line> In the selection line, for example, when an H voltage is applied to the signal electrode 4, an H voltage is applied between the reference electrode 5 and the signal electrode 4. There is no potential difference with the electrode 4. On the other hand, since the L voltage is applied to the scan electrode 6 between the signal electrode 4 and the scan electrode 6, a potential difference is generated. Therefore, the polar liquid 16 moves in the display space S toward the scanning electrode 6 where a potential difference is generated with respect to the signal electrode 4. As a result, as illustrated in FIG. 5B, the polar liquid 16 is moved to the ineffective display area P ⁇ b> 2 side, and the oil 17 is moved to the reference electrode 5 side to illuminate light from the backlight 18. Is allowed to reach the color filter portion 11r.
  • the display color on the display surface side is in a red display (CF color display) state by the color filter unit 11r.
  • CF color display red display
  • the polar liquid 16 moves to the ineffective display area P ⁇ b> 2 side and CF colored display is performed, from the RGB pixels.
  • the red light, green light, and blue light are mixed with white light, and white display is performed.
  • the polar liquid 16 moves in the display space S toward the reference electrode 5 where a potential difference is generated with respect to the signal electrode 4.
  • the polar liquid 16 is moved to the effective display region P1 side, and the illumination light from the backlight 18 is prevented from reaching the color filter unit 11r.
  • the display color on the display surface side is in a black display (non-CF color display) state by the polar liquid 16.
  • the polar liquid 16 is maintained in a stationary state at the current position and is maintained in the current display color. That is, since the M voltage is applied to both the reference electrode 5 and the scan electrode 6, the potential difference between the reference electrode 5 and the signal electrode 4 and the potential difference between the scan electrode 6 and the signal electrode 4 are This is because the same potential difference occurs in both cases.
  • the polar liquid 16 does not move but remains stationary and the display color on the display surface side. Does not change.
  • the polar liquid 16 can be moved according to the voltage applied to the signal electrode 4 as described above, and the display color on the display surface side can be changed.
  • the display color at each pixel on the selected line is applied to the signal electrode 4 corresponding to each pixel, for example, as shown in FIG. 7 by the combination of the applied voltages shown in Table 1.
  • the color filter portions 11r, 11g, and 11b are CF colored (red, green, or blue) or the non-CF colored (black) by the polar liquid 16.
  • the reference driver 8 and the scanning driver 9 perform the scanning operation of the selection lines of the reference electrode 5 and the scanning electrode 6 from the left to the right in FIG. 7, for example, The display color also changes sequentially from left to right in FIG.
  • the image display apparatus 1 can perform various information including moving images based on an external image input signal. Can be displayed.
  • combinations of voltages applied to the reference electrode 5, the scan electrode 6, and the signal electrode 4 are not limited to Table 1 but may be those shown in Table 2.
  • the reference driver 8 and the scan driver 9 are, for example, in a predetermined scanning direction from the left side to the right side in the figure, with respect to the reference electrode 5 and the scan electrode 6 as L voltage (second voltage) and H as selection voltages.
  • a scanning operation is performed in which a voltage (first voltage) is sequentially applied to select lines.
  • the signal driver 7 applies the H voltage or the L voltage as the signal voltage Vd to the corresponding signal electrode 4 according to the image input signal from the outside.
  • the reference driver 8 and the scan driver 9 apply the M voltage as the non-selection voltage to the non-selected lines, that is, all the remaining reference electrodes 5 and scan electrodes 6.
  • the polar liquid 16 moves in the display space S toward the reference electrode 5 where a potential difference is generated with respect to the signal electrode 4.
  • the polar liquid 16 is moved to the effective display region P1 side, and the illumination light from the backlight 18 is prevented from reaching the color filter unit 11r.
  • the display color on the display surface side is in a black display (non-CF color display) state by the polar liquid 16.
  • the polar liquid 16 is maintained in a stationary state at the current position and is maintained at the current display color. That is, since the M voltage is applied to both the reference electrode 5 and the scan electrode 6, the potential difference between the reference electrode 5 and the signal electrode 4 and the potential difference between the scan electrode 6 and the signal electrode 4 are This is because the same potential difference occurs in both cases.
  • the polar liquid 16 can be moved according to the voltage applied to the signal electrode 4 as described above, and the display color on the display surface side can be changed.
  • the applied voltage to the signal electrode 4 is not limited to the binary value of the H voltage or the L voltage.
  • the voltage between the H voltage and the L voltage can be changed according to information displayed on the display surface side.
  • the image display device 1 can perform gradation display by controlling the signal voltage Vd. Thereby, the display element 10 excellent in display performance can be configured.
  • the inside of the display space S is airtightly divided by the ribs 14 according to the plurality of pixel regions P.
  • the oil (insulating fluid) 17 can be prevented from flowing from the adjacent pixel region P, and the oil 17 from the adjacent pixel region P can be prevented.
  • the slight movement of the polar liquid 16 can be prevented.
  • the display element 10 according to the present embodiment when the polar liquid 16 is moved for each pixel region P in the display space S, the flow path of the oil 17 in the display space S is large.
  • the reference electrode 5 and the scanning electrode 6 are provided on the lower substrate (one of the first and second substrates) 3 side.
  • the display element 10 of this embodiment when the polar liquid 16 is moved when changing the display color, the polar liquid 16 can be moved smoothly and appropriately. Therefore, in the present embodiment, unlike the conventional example, it is possible to configure the display element 10 that can prevent display quality from being deteriorated even when gradation display is performed.
  • the reference electrode 5 and the scanning electrode 6 are provided so as to move in a shape different from the shape when the polar liquid 16 is stationary. Thereby, in this embodiment, when the polar liquid 16 is moved when the display color is changed, the flow path of the oil 17 can be reliably ensured, and the flow path of the oil 17 is reliably increased. Can do.
  • the reference electrode 5 and the scanning electrode 6 are provided so that the dimension of the polar liquid 16 changes in the orthogonal direction orthogonal to the moving direction of the polar liquid 16.
  • the reference electrode 5 and the scanning electrode 6 of the present embodiment are configured so that the shape in the pixel region P is asymmetric.
  • the flow path of the oil 17 is ensured by ensuring the flow path of the oil 17 in the pixel region P by the reference electrode 5 and the scan electrode 6 configured in an asymmetric shape. it can.
  • the display element 10 that can prevent the display quality from being deteriorated even when performing gradation display is used in the display unit, which is excellent.
  • a high-performance image display device (electric device) 1 including a display unit having display quality can be easily configured.
  • the signal driver (signal voltage application unit) 7, the reference driver (reference voltage application unit) 8, and the scan driver (scan voltage application unit) 9 include the signal electrode 4, the reference electrode 5, The signal voltage Vd, the reference voltage Vr, and the scanning voltage Vs are applied to the scanning electrode 6. Accordingly, in the present embodiment, the matrix drive type display element 10 having excellent display quality can be easily configured, and the display color of each pixel region can be appropriately changed.
  • the reference electrode 5 and the scanning electrode 6 may be interchanged, that is, the convex scanning electrode 6 and the concave reference electrode 5 may be used.
  • FIG. 8 is an enlarged plan view showing a main part configuration in one pixel region of the display element according to the second embodiment of the present invention.
  • FIG. 9A to FIG. 9C are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • the main difference between the present embodiment and the first embodiment is that the dimensions in the orthogonal direction perpendicular to the moving direction change in the reference electrode and the scanning electrode along the moving direction of the polar liquid. This is the point
  • symbol is attached
  • the signal electrode 4, the dielectric layer 13, and the water-repellent films 12 and 15 are not shown for the sake of simplification.
  • the reference electrode 5 of the present embodiment uses a concave shape in the pixel region P, and in that shape, the moving direction of the polar liquid 16 (X direction) ), The dimension in the orthogonal direction (Y direction) orthogonal to the moving direction changes.
  • the scanning electrode 6 of the present embodiment uses a convex shape in the pixel region P, and in that shape, along the moving direction (X direction) of the polar liquid 16 The dimension in the orthogonal direction (Y direction) orthogonal to the moving direction changes.
  • the reference electrode 5 and the scan electrode 6 are configured in an asymmetric shape in the pixel region P, as in the first embodiment.
  • the reference electrode 5 and the scanning electrode 6 are provided so as to move in a shape different from the shape when the polar liquid 16 is stationary.
  • the reference electrode 5 and the scanning electrode 6 are provided so that the dimension of the polar liquid 16 changes in the orthogonal direction orthogonal to the moving direction of the polar liquid 16.
  • the reference electrode 5 is provided in a rectangular shape within the pixel region P, and is continuously provided on the main body portion 5d, and is parallel to each other in the X direction from the main body portion 5d. Pixels adjacent to each other in the Y direction are provided below the two ribs 14b and the two protruding portions 5e that protrude to the scanning electrode 6 side and whose dimensions in the Y direction change stepwise.
  • a connection portion 5f for connecting the main body portions 5d of the reference electrodes 5 in the region P is provided.
  • Each protrusion 5e includes four protrusions 5e1, 5e2, 5e3, and 5e4 whose dimensions in the Y direction are gradually reduced from the main body 5d side.
  • the scanning electrode 6 is provided in a rectangular shape within the pixel region P, and is continuously provided on the main body portion 6d, and protrudes from the main body portion 6d toward the reference electrode 5 in the X direction.
  • the protrusions 6e whose dimensions in the Y direction change stepwise and the main body parts 6d of the scanning electrodes 6 in the pixel region P adjacent to each other in the Y direction are provided below the second rib member 14b. 6f is provided.
  • the projecting portion 6e includes four projecting portions 6e1, 6e2, 6e3, and 6e4 whose dimensions in the Y direction gradually decrease from the main body 6d side.
  • the reference electrode 5 and the scanning electrode 6 are configured such that the protruding portion 6e of the scanning electrode 6 is disposed between the two protruding portions 5e of the reference electrode 5, as shown in FIG.
  • the main body portion 5d and the protruding portion 5e substantially constitute an electrode portion that functions as an electrode. That is, when a predetermined voltage is applied to the reference electrode 5, an electrowetting phenomenon occurs on the surface of the lower substrate 3 on the display surface side in the portion where the main body portion 5d and the protruding portion 5e are provided, The wettability (contact angle) of the polar liquid 16 changes, and the polar liquid 16 becomes movable.
  • the main body portion 6d and the protruding portion 6e substantially constitute an electrode portion that functions as an electrode.
  • the polar liquid 16 is, for example, from the position shown in FIG. 9A to the right side (black matrix) of FIG.
  • a voltage to be moved to the part 11 s side is applied, on the surface of the dielectric layer 13 covering the reference electrode 5 and the scanning electrode 6 on the lower substrate 3, the main body part 5 d and the protruding part 5 e of the reference electrode 5 and the scanning electrode 6, the wettability (contact angle) of the polar liquid 16 with respect to the surface changes due to the electrowetting phenomenon at the upper part of the main body 6d and the protrusion 6e.
  • the polar liquid 16 has a shape when it is stationary so that the dimension of the polar liquid 16 in the orthogonal direction orthogonal to the moving direction changes. It moves in the direction shown by arrow F3 while being deformed. Therefore, in the display space S, the flow path of the oil 17 can be secured in the upper part and the lower part of the polar liquid 16 in FIG. The oil 17 moves along the flow path in the direction indicated by the arrow F4.
  • the polar liquid 16 and the oil 17 are moved to the scanning electrode 6 side and the reference electrode 5 side, respectively, and the polar liquid 16 is, as illustrated in FIG. It is completely moved to the scanning electrode 6 side (black matrix portion 11s side) and becomes stationary.
  • the dimensions of the protrusions 5e and 6e in the Y direction change stepwise, so that the protrusions 5e and 6e have different dimensions.
  • the polar liquid 16 does not stop, and the polar liquid 16 can be moved more smoothly than in the first embodiment.
  • the reference electrode 5 and the scan electrode 6 are configured in an asymmetric shape in the pixel region P as in the first embodiment.
  • a refresh operation for moving the polar liquid 16 toward the reference electrode 5 as shown in FIG.
  • the present embodiment can achieve the same operations and effects as the first embodiment. Further, in the reference electrode 5 and the scanning electrode 6 of the present embodiment, the dimensions in the orthogonal direction orthogonal to the moving direction of the polar liquid 16 change along the moving direction. Thereby, in this embodiment, the flow path of the oil 17 can be ensured in the orthogonal direction, and the flow path of the oil 17 can be enlarged. In addition, in the reference electrode 5 and the scanning electrode 6 of the present embodiment, as shown in FIG. 8, in the protrusions 5e and 6e, the protrusions 5e1 and 6e1 on the main body parts 5d and 6d side have the largest dimensions. Therefore, compared to the first embodiment, the moving speed when the polar liquid 16 is moved to one side of the reference electrode 5 side and the scanning electrode 6 side can be improved.
  • the reference electrode 5 and the scanning electrode 6 may be interchanged, that is, the convex scanning electrode 6 and the concave reference electrode 5 may be used.
  • FIG. 10 is an enlarged plan view showing the main configuration of one pixel region of the display element according to the third embodiment of the present invention.
  • FIG. 11A to FIG. 11C are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • the main difference between the present embodiment and the first embodiment is that, in the reference electrode and the scan electrode, the dimensions in the orthogonal direction perpendicular to the moving direction are continuously provided along the moving direction of the polar liquid. It is a point that was changed.
  • symbol is attached
  • the signal electrode 4, the dielectric layer 13, and the water repellent films 12 and 15 are omitted for simplification of the drawing.
  • the reference electrode 5 of the present embodiment uses a concave shape in the pixel region P, and in that shape, the moving direction of the polar liquid 16 (X direction) ), The dimension in the orthogonal direction (Y direction) orthogonal to the moving direction continuously changes.
  • the scanning electrode 6 of the present embodiment uses a convex shape in the pixel region P, and in that shape, along the moving direction (X direction) of the polar liquid 16 The dimension in the orthogonal direction (Y direction) orthogonal to the moving direction continuously changes.
  • the reference electrode 5 and the scan electrode 6 are configured in an asymmetric shape in the pixel region P, as in the first embodiment.
  • the reference electrode 5 and the scanning electrode 6 are provided so as to move in a shape different from the shape when the polar liquid 16 is stationary.
  • the reference electrode 5 and the scanning electrode 6 are provided so that the dimension of the polar liquid 16 changes in the orthogonal direction orthogonal to the moving direction of the polar liquid 16.
  • the reference electrode 5 is provided in a rectangular shape within the pixel region P, and is continuously provided in the main body portion 5g, and is parallel to the X direction from the main body portion 5g.
  • the scanning electrode 6 is provided in a rectangular shape within the pixel region P, and is continuously provided on the main body portion 6g, and protrudes from the main body portion 6g toward the reference electrode 5 in the X direction.
  • the main body of the scanning electrode 6 in the pixel region P in the pixel region P which is provided below the second rib member 14b and the trapezoidal protruding portion 6h whose dimension in the Y direction continuously changes.
  • the connection part 6i which connects the part 6g is provided.
  • the reference electrode 5 and the scan electrode 6 are configured such that the protrusion 6 h of the scan electrode 6 is disposed between the two protrusions 5 h of the reference electrode 5 as shown in FIG.
  • the main body portion 5g and the protruding portion 5h substantially constitute an electrode portion that functions as an electrode. That is, when a predetermined voltage is applied to the reference electrode 5, an electrowetting phenomenon occurs on the surface of the lower substrate 3 on the display surface side in the portion where the main body portion 5g and the protruding portion 5h are provided, The wettability (contact angle) of the polar liquid 16 changes, and the polar liquid 16 becomes movable.
  • the main body portion 6g and the protruding portion 6h substantially constitute an electrode portion that functions as an electrode.
  • the polar liquid 16 is moved from the position shown in FIG. 11A to the right side (black matrix) of FIG.
  • a voltage to be moved to the portion 11s side is applied, on the surface of the dielectric layer 13 covering the reference electrode 5 and the scanning electrode 6 on the lower substrate 3, the main body portion 5g and the protruding portion 5h of the reference electrode 5 and the scanning electrode 6, the wettability (contact angle) of the polar liquid 16 with respect to the surface changes due to the electrowetting phenomenon in the upper part of the main body 6g and the protrusion 6h.
  • the polar liquid 16 has a shape when it is stationary so that the dimension of the polar liquid 16 in the orthogonal direction perpendicular to the moving direction changes. While deforming, it moves in the direction indicated by arrow F5. For this reason, in the display space S, according to the deformation of the polar liquid 16, the flow path of the oil 17 can be secured in the upper part and the lower part of the polar liquid 16 in FIG. The oil 17 moves along the flow path in the direction indicated by the arrow F6.
  • the polar liquid 16 and the oil 17 move to the scanning electrode 6 side and the reference electrode 5 side, respectively, and the polar liquid 16 is, as illustrated in FIG. It is completely moved to the scanning electrode 6 side (black matrix portion 11s side) and becomes stationary.
  • the dimensions of the protrusions 5e and 6e in the Y direction are continuously changed, so that the protrusions 5e and 6e have different dimensions.
  • the polar liquid 16 does not stop, and the polar liquid 16 can be moved more smoothly than in the first embodiment.
  • the reference electrode 5 and the scan electrode 6 are configured in an asymmetric shape in the pixel region P as in the first embodiment.
  • a refresh operation for moving the polar liquid 16 toward the reference electrode 5 as shown in FIG.
  • the present embodiment can achieve the same operations and effects as the first embodiment. Further, in the reference electrode 5 and the scanning electrode 6 of the present embodiment, the dimensions in the orthogonal direction orthogonal to the moving direction of the polar liquid 16 continuously change along the moving direction. Thereby, in this embodiment, the flow path of the oil 17 can be ensured in the orthogonal direction, and the flow path of the oil 17 can be enlarged. Furthermore, in the present embodiment, when the polar liquid 16 is moved, it is easier to continuously move the polar liquid 16 than in the second embodiment, and halftone display can be easily performed. it can. Moreover, in the reference electrode 5 and the scanning electrode 6 of the present embodiment, as shown in FIG.
  • the dimensions of the main body parts 5g, 6g side are the maximum dimensions in each of the protrusions 5h, 6h. Therefore, the moving speed in the case of moving the polar liquid 16 to one side of the reference electrode 5 side and the scanning electrode 6 side can be improved as compared with that of the first embodiment.
  • the reference electrode 5 and the scanning electrode 6 may be interchanged, that is, the convex scanning electrode 6 and the concave reference electrode 5 may be used.
  • FIG. 12 is an enlarged plan view showing a main part configuration in one pixel region of the display element according to the fourth embodiment of the present invention.
  • FIGS. 13A to 13C are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • the main difference between the present embodiment and the first embodiment is that the shapes of the reference electrode and the scan electrode in the pixel region are configured symmetrically.
  • symbol is attached
  • the signal electrode 4, the dielectric layer 13, and the water repellent films 12 and 15 are not shown for simplification of the drawing.
  • the reference electrode 25 and the scanning electrode 26 are configured to be symmetrical with each other in the pixel region P, and the polar liquid 16 is moved. In addition, the flow path of the oil 17 is increased.
  • the reference electrode 25 and the scan electrode 26 are configured to be symmetrical to each other in the pixel region P, and the reference electrode 25 and the scan electrode 26 have polarities.
  • the liquid 16 is provided so as to move in a shape different from that when the liquid 16 is stationary.
  • the reference electrode 25 and the scanning electrode 26 are provided so that the dimension of the polar liquid 16 changes in the orthogonal direction orthogonal to the moving direction of the polar liquid 16.
  • the reference electrode 25 has a substantially trapezoidal shape in the pixel region P. That is, the reference electrode 25 has a main body portion 25a configured in a rectangular shape in the pixel region P, and a right triangle that is continuously provided on the main body portion 25a and protrudes from the main body portion 25a toward the scanning electrode 26.
  • the shape is provided with a protruding portion 25b and a connecting portion 25c that is provided below the second rib member 14b and connects the body portions 25a of the reference electrodes 25 in the pixel region P adjacent in the Y direction.
  • the scanning electrode 26 has a substantially trapezoidal shape in the pixel region P. That is, the scanning electrode 26 has a main body portion 26a configured in a rectangular shape within the pixel region P, and a right triangle formed continuously from the main body portion 26a and protruding toward the reference electrode 25 from the main body portion 26a.
  • the projection 26b has a shape and a connection portion 26c that is provided below the second rib member 14b and connects the main body portions 26a of the scanning electrodes 26 in the pixel region P adjacent in the Y direction.
  • the protruding portion 25b of the reference electrode 25 and the protruding portion 26b of the scanning electrode 26 are arranged so as to face each other with the hypotenuse portions close to each other. Yes.
  • the main body portion 25a and the protruding portion 25b substantially constitute an electrode portion that functions as an electrode. That is, when a predetermined voltage is applied to the reference electrode 25, an electrowetting phenomenon occurs in the portion where the main body portion 25a and the protruding portion 25b are provided on the display surface side surface of the lower substrate 3. The wettability (contact angle) of the polar liquid 16 changes, and the polar liquid 16 becomes movable. Similarly, in the scanning electrode 26, the main body portion 26a and the protruding portion 26b substantially constitute an electrode portion that functions as an electrode.
  • the polar liquid 16 is moved from the position shown in FIG. 13A to the right side (black matrix) of FIG.
  • a voltage to be moved to the portion 11s side is applied, on the surface of the dielectric layer 13 covering the reference electrode 25 and the scanning electrode 26 on the lower substrate 3, the main body portion 25a and the protruding portion 25b of the reference electrode 25 and the scanning electrode 26, the wettability (contact angle) of the polar liquid 16 with respect to the surface changes due to the electrowetting phenomenon in the upper part of the main body 26a and the protrusion 26b.
  • the polar liquid 16 has a shape when it is stationary so that the dimension of the polar liquid 16 in the orthogonal direction orthogonal to the moving direction changes. While deforming, it moves in the direction indicated by arrow F7. Therefore, in the display space S, according to the deformation of the polar liquid 16, a flow path of the oil 17 can be secured in the lower portion of the polar liquid 16 in FIG. Then, it moves in the direction indicated by arrow F8 along the flow path.
  • the polar liquid 16 and the oil 17 move to the scanning electrode 26 side and the reference electrode 25 side, respectively, and the polar liquid 16 is, as illustrated in FIG. It is completely moved to the scanning electrode 26 side (black matrix portion 11s side) and becomes stationary.
  • the reference electrode 25 and the scanning electrode 26 are configured to be symmetrical to each other in the pixel region P. Therefore, unlike the first embodiment, the reference electrode 25 is different from that of the first embodiment. And the dependence of the moving direction of the polar liquid 16 resulting from each shape of the scanning electrode 26 does not arise. For this reason, in the display element 10 of the present embodiment, unlike the first embodiment, the refresh operation before the polar liquid 16 moving operation (for example, a scanning operation described later) can be omitted.
  • the present embodiment can achieve the same operations and effects as the first embodiment.
  • the reference electrode 25 and the scanning electrode 26 of the present embodiment are configured so that the shapes in the pixel region P are symmetric. Thereby, in this embodiment, the flow path of the oil 17 is ensured in the pixel region P by the reference electrode 25 and the scanning electrode 26 configured in a symmetric shape, and the flow path of the oil 17 is enlarged. it can.
  • the reference electrode 25 and the scanning electrode 26 of the present embodiment are provided with protruding portions 25b and 26b that protrude to the other side, the protruding portions 25b and 26b of the reference electrode 25 and the scanning electrode 26 respectively
  • the flow path of the oil 17 can be secured in the pixel region P, and the flow path of the oil 17 can be enlarged.
  • each of the reference electrode and the scan electrode may be configured such that each shape in two pixel regions adjacent in the Y direction is bilaterally symmetrical in the Y direction (described later). The same applies to the fifth, sixth and eighth to twelfth embodiments.)
  • FIG. 14 is an enlarged plan view showing a main part configuration in one pixel region of the display element according to Embodiment 5 of the present invention.
  • FIG. 15A to FIG. 15C are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • the main difference between the present embodiment and the fourth embodiment is that the reference electrode and the scan electrode are L-shaped in the pixel region.
  • symbol is attached
  • the signal electrode 4, the dielectric layer 13, and the water repellent films 12 and 15 are not shown for simplification of the drawing.
  • the reference electrode 25 and the scanning electrode 26 are configured in an L-shape that is symmetrical to each other in the pixel region P.
  • the reference electrode 25 is provided in a rectangular shape within the pixel region P, and is continuously provided on the main body portion 25d, and protrudes from the main body portion 25d to the scanning electrode 26 side. And a connecting portion 25f that is provided below the second rib member 14b and connects the body portions 25d of the reference electrodes 25 in the pixel region P adjacent in the Y direction. Yes.
  • the scanning electrode 26 is formed in a rectangular shape within the pixel region P, and is continuously provided on the main body portion 26d, and the scanning electrode 26 has a rectangular shape protruding from the main body portion 26d toward the reference electrode 25.
  • the protrusion 26e having a shape and a connection portion 26f that is provided below the second rib member 14b and connects the main body portions 26d of the scanning electrodes 26 in the pixel region P adjacent in the Y direction are provided.
  • the protruding portion 25e of the reference electrode 25 and the protruding portion 26e of the scanning electrode 26 are arranged to face each other.
  • the main body portion 25d and the protruding portion 25e substantially constitute an electrode portion that functions as an electrode. That is, when a predetermined voltage is applied to the reference electrode 25, an electrowetting phenomenon occurs in the portion where the main body portion 25d and the protruding portion 25e are provided on the surface of the lower substrate 3 on the display surface side. The wettability (contact angle) of the polar liquid 16 changes, and the polar liquid 16 becomes movable. Similarly, in the scanning electrode 26, the main body portion 26d and the protruding portion 26e substantially constitute an electrode portion that functions as an electrode.
  • the polar liquid 16 is moved from the position shown in FIG. 15A to the right side (black matrix) of FIG.
  • a voltage to be moved to the portion 11s side is applied, on the surface of the dielectric layer 13 covering the reference electrode 25 and the scanning electrode 26 on the lower substrate 3, the body portion 25d and the protruding portion 25e of the reference electrode 25 and the scanning electrode 26, the wettability (contact angle) of the polar liquid 16 with respect to the surface changes due to the electrowetting phenomenon in the upper part of the main body part 26d and the protruding part 26e.
  • the polar liquid 16 has a shape when it is stationary so that the dimension of the polar liquid 16 in the orthogonal direction orthogonal to the moving direction changes. While deforming, it moves in the direction indicated by arrow F9. Therefore, in the display space S, according to the deformation of the polar liquid 16, a flow path of the oil 17 can be secured in the lower part of the polar liquid 16 in FIG. Then, it moves in the direction indicated by the arrow F10 along the flow path.
  • the polar liquid 16 and the oil 17 move to the scanning electrode 26 side and the reference electrode 25 side, respectively, and the polar liquid 16 is, as illustrated in FIG. It is completely moved to the scanning electrode 26 side (black matrix portion 11s side) and becomes stationary.
  • the dimension of the polar liquid 16 in the stationary direction in the moving direction (X direction) of the polar liquid 16 indicated by “L3” in FIG. The dimension of the overlapping portion of the projecting portions 25e and 26e in the moving direction (X direction) of the polar liquid 16 indicated by “L4” in FIG.
  • the polar liquid 16 can be reliably moved to the desired side on the reference electrode 25 side or the scan electrode 26 side. That is, when the dimension L4 of the overlapping portion is configured to be larger than the dimension L3 of the polar liquid 16, when the polar liquid 16 is positioned (stopped) on the overlapping portion, the reference electrode 25 side that is not the desired destination or There is a possibility of moving to the scanning electrode 26 side.
  • the dimension L4 of the overlapping portion is configured to be smaller than the dimension L3 of the polar liquid 16
  • the desired reference electrode 25 at the destination of movement. This is because the polar liquid 16 can be reliably moved to the desired destination reference electrode 25 side or scan electrode 26 side by the main body portion 25 d or the main body portion 26 d of the scan electrode 26.
  • the present embodiment can achieve the same operations and effects as the fourth embodiment.
  • FIG. 16 is an enlarged plan view showing a main part configuration in one pixel region of a display element according to Embodiment 6 of the present invention.
  • 17 (a) to 17 (c) are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • the main difference between the present embodiment and the fourth embodiment is that a reference electrode and a scan electrode having a substantially L shape in the pixel region are used.
  • symbol is attached
  • the signal electrode 4, the dielectric layer 13, and the water-repellent films 12 and 15 are not shown for simplification of the drawing.
  • the reference electrode 25 and the scanning electrode 26 are configured in a substantially L-shape that is symmetrical to each other in the pixel region P.
  • the reference electrode 25 is provided in a rectangular shape within the pixel region P, and is continuously provided on the main body portion 25g, and protrudes from the main body portion 25g toward the scanning electrode 26 side.
  • the trapezoidal protruding portion 25h is provided, and a connecting portion 25i is provided below the second rib member 14b and connects the body portions 25g of the reference electrodes 25 in the pixel region P adjacent in the Y direction. Yes.
  • the scanning electrode 26 is formed in a rectangular shape within the pixel region P, and is continuously provided on the main body portion 26g, and a base protruding from the main body portion 26g toward the reference electrode 25 side.
  • the projection 26h has a shape and a connection portion 26i that is provided below the second rib member 14b and connects the body portions 26g of the scanning electrodes 26 in the pixel region P adjacent in the Y direction.
  • the protruding portion 25h of the reference electrode 25 and the protruding portion 26h of the scanning electrode 26 are arranged to face each other.
  • the main body portion 25g and the protruding portion 25h constitute an electrode portion that substantially functions as an electrode. That is, when a predetermined voltage is applied to the reference electrode 25, an electrowetting phenomenon occurs in the portion where the main body portion 25g and the protruding portion 25h are provided on the display surface side surface of the lower substrate 3. The wettability (contact angle) of the polar liquid 16 changes, and the polar liquid 16 becomes movable. Similarly, in the scanning electrode 26, the main body portion 26g and the protruding portion 26h substantially constitute an electrode portion that functions as an electrode.
  • the polar liquid 16 is moved from the position shown in FIG. 17A to the right side (black matrix) of FIG.
  • a voltage to be moved to the portion 11s side is applied, on the surface of the dielectric layer 13 covering the reference electrode 25 and the scanning electrode 26 on the lower substrate 3, the main body portion 25g and the protruding portion 25h of the reference electrode 25 and the scanning electrode 26, the wettability (contact angle) of the polar liquid 16 with respect to the surface changes due to the electrowetting phenomenon in the upper part of the main body 26g and the protrusion 26h.
  • the polar liquid 16 has a shape when it is stationary so that the dimension of the polar liquid 16 in the orthogonal direction orthogonal to the moving direction changes. It moves in the direction indicated by arrow F11 while being deformed. For this reason, in the display space S, according to the deformation of the polar liquid 16, a flow path of the oil 17 can be secured in the lower portion of the polar liquid 16 in FIG. Then, it moves in the direction indicated by the arrow F12 along the flow path.
  • the polar liquid 16 and the oil 17 move to the scanning electrode 26 side and the reference electrode 25 side, respectively, and the polar liquid 16 is, as illustrated in FIG. It is completely moved to the scanning electrode 26 side (black matrix portion 11s side) and becomes stationary.
  • the dimensions of the protrusions 25h and 26h in the Y direction continuously change.
  • the polar liquid 16 does not stop, and the polar liquid 16 can be moved more smoothly than in the fifth embodiment.
  • the present embodiment can achieve the same operations and effects as the fourth embodiment.
  • FIG. 18 is an enlarged plan view showing a main part configuration in one pixel region of a display element according to Embodiment 7 of the present invention.
  • FIGS. 19A to 19C are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • the main difference between the present embodiment and the fourth embodiment is that the reference electrode and the scan electrode are formed such that a gap is provided in the orthogonal direction perpendicular to the moving direction of the polar liquid. It is.
  • symbol is attached
  • the signal electrode 4, the dielectric layer 13, and the water-repellent films 12 and 15 are not shown for simplification of the drawing.
  • the reference electrode 35 and the scanning electrode 36 are configured in an I-shape that is symmetrical to each other in the pixel region P.
  • the reference electrode 35 is provided below the rectangular main body portion 35a provided in the pixel region P so as to be parallel to the X direction and the second rib member 14b, and in the Y direction. And a connecting portion 35b for connecting the main body portions 35a of the reference electrodes 35 in the adjacent pixel regions P. Further, the reference electrode 35 is formed such that gaps 37 a and 37 a ′ are provided in the orthogonal direction (Y direction) orthogonal to the moving direction of the polar liquid 16. That is, in the reference electrode 35, the main body 35a is disposed at the center in the Y direction, and gaps 37a and 37a ′ are formed between the right and left second rib members 14b in FIG. ing.
  • the scanning electrode 36 is provided below the second rib member 14b and adjacent to the rectangular main body 36a provided in the pixel region P so as to be parallel to the X direction, and is adjacent in the Y direction.
  • a connection part 36b for connecting the main body parts 36a of the scanning electrodes 36 in the pixel region P is provided.
  • the scanning electrode 36 is formed so that the gap portions 38 a and 38 a ′ are provided in the orthogonal direction (Y direction) orthogonal to the moving direction of the polar liquid 16. That is, in the scanning electrode 36, the main body 36a is disposed in the center in the Y direction, and gaps 38a and 38a ′ are formed between the right and left second rib members 14b in FIG. ing.
  • the protruding portion 35a of the reference electrode 35 and the protruding portion 36a of the scanning electrode 36 are arranged so that the end portions thereof face each other.
  • the main body portion 35a constitutes an electrode portion that substantially functions as an electrode. That is, when a predetermined voltage is applied to the reference electrode 35, an electrowetting phenomenon occurs in the portion where the main body portion 35 a is provided on the surface of the lower substrate 3 on the display surface side, and the polar liquid 16 The wettability (contact angle) changes, and the polar liquid 16 can move.
  • the main body portion 36a constitutes an electrode portion that substantially functions as an electrode. That is, when a predetermined voltage is applied to the scanning electrode 36, an electrowetting phenomenon occurs in the portion where the main body 36 a is provided on the surface of the lower substrate 3 on the display surface side. The wettability (contact angle) changes, and the polar liquid 16 can move.
  • the polar liquid 16 is moved from the position shown in FIG. 19A to the right side (black matrix) of FIG.
  • a voltage to be moved to the portion 11 s side is applied, on the surface of the dielectric layer 13 covering the reference electrode 35 and the scanning electrode 36 on the lower substrate 3, the main body portion 35 a of the reference electrode 35 and the main body portion of the scanning electrode 36.
  • the wettability (contact angle) of the polar liquid 16 with respect to the surface changes due to the electrowetting phenomenon.
  • the polar liquid 16 has a shape when it is stationary so that the dimension of the polar liquid 16 changes in the orthogonal direction orthogonal to the moving direction. While deforming, it moves in the direction indicated by arrow F13. For this reason, in the display space S, according to the deformation of the polar liquid 16, the flow path of the oil 17 can be secured in the upper part and the lower part of the polar liquid 16 in FIG. The oil 17 moves along the flow path in the direction indicated by the arrow F14.
  • the polar liquid 16 and the oil 17 are moved to the scanning electrode 36 side and the reference electrode 35 side, respectively, and the polar liquid 16 is, as illustrated in FIG. It is completely moved to the scanning electrode 36 side (black matrix portion 11s side) and becomes stationary.
  • the present embodiment can achieve the same operations and effects as the fourth embodiment.
  • the reference electrode 35 and the scanning electrode 36 are formed so that the gap portions 37a, 37a ′ and 38a, 38a ′ are provided in the orthogonal direction orthogonal to the moving direction of the polar liquid 16.
  • the flow path of the oil 17 can be secured in the pixel region P by the gap portions 37a, 37a ′ and 38a, 38a ′, and the flow path of the oil 17 can be enlarged.
  • the main body portion is referred to a portion other than the central portion in the Y direction, that is, the right end portion side or the left end portion side in the Y direction in FIG.
  • a configuration in which the main body portions of the electrodes and the scanning electrodes are installed may be employed.
  • FIG. 20 is an enlarged plan view showing the main configuration of one pixel region of the display element according to the eighth embodiment of the present invention.
  • 21 (a) to 21 (c) are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • the main difference between the present embodiment and the seventh embodiment is that the installation location in the pixel region in the orthogonal direction perpendicular to the moving direction of the polar liquid is changed in the reference electrode and the scanning electrode. It is.
  • symbol is attached
  • the signal electrode 4, the dielectric layer 13, and the water repellent films 12 and 15 are omitted for simplification of the drawing.
  • the reference electrode 35 and the scanning electrode 36 are configured in an I-shape that is symmetrical to each other in the pixel region P.
  • the reference electrode 35 is provided below the rectangular main body portion 35c provided in the pixel region P so as to be parallel to the X direction and the second rib member 14b, and in the Y direction. And a connecting portion 35d for connecting the main body portions 35c of the reference electrodes 35 in the adjacent pixel region P.
  • the main body portion 35c is provided, for example, in the vicinity of the second rib member 14b on the left side of FIG. 20 in order to move the polar liquid 16 reliably. Further, it is configured to slightly protrude toward the scanning electrode 36 side.
  • the reference electrode 35 is formed such that gaps 37 b and 37 b ′ are provided in an orthogonal direction (Y direction) orthogonal to the moving direction of the polar liquid 16. That is, in the reference electrode 35, the main body portion 35a is disposed at the left end portion in the Y direction, and gap portions 37b and 37b ′ are formed between the right and left second rib members 14b in FIG. Has been.
  • the scanning electrode 36 is provided below the second rib member 14b and adjacent to the rectangular main body 36c provided in the pixel region P so as to be parallel to the X direction, and is adjacent in the Y direction.
  • a connection portion 36d for connecting the main body portions 36c of the scanning electrodes 36 in the pixel region P is provided.
  • the main body 36c is provided, for example, in the vicinity of the second rib member 14b on the right side in FIG. 20 to move the polar liquid 16 reliably.
  • the reference electrode 35 is slightly protruded.
  • the scanning electrode 36 is formed so that the gap portions 38 b and 38 b ′ are provided in the orthogonal direction (Y direction) orthogonal to the moving direction of the polar liquid 16. That is, in the scanning electrode 36, the main body 36c is disposed at the right end in the Y direction, and gaps 38b and 38b ′ are formed between the right and left second rib members 14b in FIG. Has been.
  • the protruding portion 35c of the reference electrode 35 and the protruding portion 36c of the scanning electrode 36 are arranged so as to partially face each other in the Y direction.
  • the main body portion 35c constitutes an electrode portion that substantially serves as an electrode. That is, when a predetermined voltage is applied to the reference electrode 35, an electrowetting phenomenon occurs in the portion where the main body portion 35 c is provided on the display surface side surface of the lower substrate 3. The wettability (contact angle) changes, and the polar liquid 16 can move.
  • the main body portion 36c constitutes an electrode portion that substantially functions as an electrode. That is, when a predetermined voltage is applied to the scanning electrode 36, an electrowetting phenomenon occurs in the portion where the main body portion 36 c is provided on the display surface side surface of the lower substrate 3, and the polar liquid 16 The wettability (contact angle) changes, and the polar liquid 16 can move.
  • the polar liquid 16 is, for example, from the position shown in FIG. 21A to the right side (black matrix) of FIG.
  • a voltage to be moved to the portion 11 s side is applied, on the surface of the dielectric layer 13 covering the reference electrode 35 and the scan electrode 36 on the lower substrate 3, the main body portion 35 c of the reference electrode 35 and the main body portion of the scan electrode 36.
  • the wettability (contact angle) of the polar liquid 16 with respect to the surface changes due to the electrowetting phenomenon.
  • the polar liquid 16 has a shape when it is stationary so that the dimension of the polar liquid 16 changes in the orthogonal direction orthogonal to the moving direction. While deforming, it moves in the direction indicated by arrow F15. For this reason, in the display space S, according to the deformation of the polar liquid 16, a flow path of the oil 17 can be secured in the upper part of the polar liquid 16 in FIG. It moves along the flow path in the direction indicated by arrow F16.
  • the polar liquid 16 and the oil 17 move to the scanning electrode 36 side and the reference electrode 35 side, respectively, and the polar liquid 16 is, as illustrated in FIG. It is completely moved to the scanning electrode 36 side (black matrix portion 11s side) and becomes stationary.
  • the present embodiment can achieve the same operations and effects as the seventh embodiment.
  • FIG. 22 is an enlarged plan view showing the main configuration of one pixel area of the display element according to Embodiment 9 of the present invention.
  • FIG. 23A to FIG. 23C are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • the main difference between the present embodiment and the seventh embodiment is that the reference electrode and the scan electrode are L-shaped in the pixel region.
  • symbol is attached
  • the signal electrode 4, the dielectric layer 13, and the water-repellent films 12 and 15 are not shown for simplification of the drawing.
  • the reference electrode 35 and the scanning electrode 36 are different from those of the seventh embodiment, and are L-shaped symmetrical to each other in the pixel region P. It is configured in the shape of
  • the reference electrode 35 is provided in the pixel region P so as to be parallel to the X direction, and is continuously provided on the main body 35e, and in the Y direction.
  • a rectangular main body 35f provided so as to be parallel to the second rib member 14b and a main body 35e of the reference electrode 35 in the pixel region P adjacent in the Y direction are connected to each other.
  • a connecting portion 35g is provided.
  • the reference electrode 35 is formed such that gaps 37 c and 37 c ′ are provided in an orthogonal direction (Y direction) orthogonal to the moving direction of the polar liquid 16. That is, in the reference electrode 35, the main body portion 35e is disposed at the right end portion in the Y direction, and gap portions 37c and 37c ′ are formed between the right and left second rib members 14b in FIG. Has been.
  • the scan electrode 36 is provided in the pixel region P so as to be parallel to the X direction, and is continuously provided on the main body 36e and parallel to the Y direction.
  • the rectangular main body portion 36f provided in this manner and the connection portion 36g that is provided below the second rib member 14b and connects the main body portions 36e of the scanning electrodes 36 in the pixel region P adjacent in the Y direction.
  • the scanning electrode 36 is formed so that the gap portions 38 c and 38 c ′ are provided in the orthogonal direction (Y direction) orthogonal to the moving direction of the polar liquid 16. That is, in the scanning electrode 36, the main body 36e is disposed at the right end in the Y direction, and gaps 38c and 38c ′ are formed between the right and left second rib members 14b in FIG. Has been.
  • the reference electrode 35 and the scan electrode 36 are arranged so that the main body portion 35f of the reference electrode 35 and the main body portion 36f of the scan electrode 36 face each other.
  • the main body portions 35e and 35f substantially constitute electrode portions that function as electrodes. That is, when a predetermined voltage is applied to the reference electrode 35, an electrowetting phenomenon occurs in the portion where the main body portions 35e and 35f are provided on the surface on the display surface side of the lower substrate 3, and the polar liquid 16 wettability (contact angle) changes, and the polar liquid 16 becomes movable.
  • the main body portions 36e and 36f constitute an electrode portion that substantially functions as an electrode.
  • the polar liquid 16 is moved from the position shown in FIG. 23A to the right side (black matrix) of FIG.
  • a voltage to be moved to the portion 11s side is applied, on the surface of the dielectric layer 13 covering the reference electrode 35 and the scan electrode 36 on the lower substrate 3, the body portions 35e and 35f of the reference electrode 35 and the scan electrode 36
  • the wettability (contact angle) of the polar liquid 16 with respect to the surface changes due to the electrowetting phenomenon.
  • the polar liquid 16 has a shape in a stationary state so that the dimension of the polar liquid 16 in the orthogonal direction orthogonal to the moving direction changes. While deforming, it moves in the direction indicated by arrow F17. For this reason, in the display space S, according to the deformation of the polar liquid 16, a flow path of the oil 17 can be secured in the upper portion of the polar liquid 16 in FIG. It moves along the flow path in the direction indicated by arrow F18.
  • the polar liquid 16 and the oil 17 move to the scanning electrode 36 side and the reference electrode 35 side, respectively, and the polar liquid 16 is, as illustrated in FIG. It is completely moved to the scanning electrode 36 side (black matrix portion 11s side) and becomes stationary.
  • the present embodiment can achieve the same operations and effects as the seventh embodiment.
  • FIG. 24 is an enlarged plan view showing a main part configuration in one pixel region of the display element according to the tenth embodiment of the present invention.
  • 25 (a) to 25 (c) are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • the main difference between the present embodiment and the ninth embodiment is that the reference electrode and the scan electrode are placed symmetrically in the pixel region.
  • symbol is attached
  • the signal electrode 4, the dielectric layer 13, and the water repellent films 12 and 15 are not shown for simplification of the drawing.
  • the reference electrode 35 and the scanning electrode 36 are different from those of the ninth embodiment in the pixel region P with respect to the center thereof. It is configured in a point-symmetric L-shape.
  • the reference electrode 35 is provided in the pixel region P so as to be parallel to the X direction, and is continuously provided on the main body 35h, and in the Y direction.
  • a rectangular main body 35i provided so as to be parallel to the second rib member 14b and a main body 35h of the reference electrode 35 in the pixel region P adjacent in the Y direction are connected to each other.
  • a connecting portion 35j is provided.
  • the reference electrode 35 is formed such that gaps 37 d and 37 d ′ are provided in the orthogonal direction (Y direction) orthogonal to the moving direction of the polar liquid 16. That is, in the reference electrode 35, the main body portion 35h is disposed at the right end portion in the Y direction, and gap portions 37d and 37d ′ are formed between the right and left second rib members 14b in FIG. Has been.
  • the scanning electrode 36 is provided in the pixel region P so as to be parallel to the X direction, and is continuously provided on the main body portion 36h and parallel to the Y direction. And a connecting portion 36j for connecting the main body portions 36h of the scanning electrodes 36 in the pixel region P adjacent to each other in the Y direction, while being provided below the second rib member 14b. It has. Further, the scanning electrode 36 is formed so that the gap portions 38d and 38d 'are provided in the orthogonal direction (Y direction) orthogonal to the moving direction of the polar liquid 16. That is, in the scanning electrode 36, the main body 36h is disposed at the left end in the Y direction, and gaps 38d and 38d ′ are formed between the right and left second rib members 14b in FIG. Has been.
  • the main body portion 35h of the reference electrode 35 and the main body portion 36h of the scan electrode 36 are arranged point-symmetrically with respect to the center of the pixel region P.
  • the main body portion 35 i of the electrode 35 and the main body portion 36 i of the scanning electrode 36 are arranged to face each other.
  • the main body portions 35h and 35i constitute an electrode portion that substantially functions as an electrode. That is, when a predetermined voltage is applied to the reference electrode 35, an electrowetting phenomenon occurs in the portion where the main body portions 35 h and 35 i are provided on the surface of the lower substrate 3 on the display surface side, and the polar liquid 16 wettability (contact angle) changes, and the polar liquid 16 becomes movable.
  • the main body portions 36h and 36i constitute an electrode portion that substantially functions as an electrode.
  • the polar liquid 16 is moved from the position shown in FIG. 25A to the right side (black matrix) of FIG.
  • a voltage to be moved to the portion 11s side is applied, on the surface of the dielectric layer 13 covering the reference electrode 35 and the scan electrode 36 on the lower substrate 3, the body portions 35h and 35i of the reference electrode 35 and the scan electrode 36
  • the wettability (contact angle) of the polar liquid 16 with respect to the surface changes due to the electrowetting phenomenon.
  • the polar liquid 16 has a shape when it is stationary so that the dimension of the polar liquid 16 in the orthogonal direction orthogonal to the moving direction changes. While deforming, it moves in the direction indicated by arrow F19. Therefore, inside the display space S, according to the deformation of the polar liquid 16, a flow path of the oil 17 can be secured in the lower portion of the polar liquid 16 in FIG. Then, it moves in the direction indicated by the arrow F20 along the flow path.
  • the polar liquid 16 and the oil 17 move to the scanning electrode 36 side and the reference electrode 35 side, respectively, and the polar liquid 16 is, as illustrated in FIG. It is completely moved to the scanning electrode 36 side (black matrix portion 11s side) and becomes stationary.
  • the present embodiment can achieve the same operations and effects as the ninth embodiment.
  • FIG. 26 is an enlarged plan view showing a main part configuration in one pixel region of the display element according to the eleventh embodiment of the present invention.
  • 27 (a) to 27 (c) are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • the main difference between the present embodiment and the seventh embodiment is that the main difference between the present embodiment and the seventh embodiment is as a reference electrode and a scan electrode in the pixel region. This is a point using a concave shape.
  • symbol is attached
  • the signal electrode 4, the dielectric layer 13, and the water-repellent films 12 and 15 are not shown for simplification of the drawing.
  • the reference electrode 35 and the scanning electrode 36 are different from those of the seventh embodiment, and are concave and symmetrical in the pixel region P. It is configured.
  • the reference electrode 35 is provided in the pixel region P so as to be parallel to the X direction, and is continuously provided on the main body 35k and in the Y direction.
  • a rectangular main body portion 35l provided so as to be parallel to each other, and a rectangular main body portion 35m provided continuously to the main body portion 35l and provided so as to be parallel to the X direction are provided.
  • the reference electrode 35 is provided below the second rib member 14b, and a connection portion 35n that connects the main body portions 35k of the reference electrodes 35 in the pixel region P adjacent in the Y direction,
  • a connection portion 35o is provided below the rib member 14b and connects the main body portions 35m of the reference electrodes 35 in the pixel region P adjacent in the Y direction.
  • the reference electrode 35 is formed so that gaps 37e and 37e 'are provided in the orthogonal direction (Y direction) orthogonal to the moving direction of the polar liquid 16. That is, in the reference electrode 35, the main body portion 35l is disposed at the right end portion in the Y direction, and gap portions 37e and 37e ′ are formed between the right and left second rib members 14b in FIG. Has been.
  • the scanning electrode 36 is provided in the pixel region P so as to be parallel to the X direction, and is continuously provided on the main body 36k and parallel to the Y direction.
  • a rectangular main body 36 l provided in this manner, and a rectangular main body 36 m provided continuously to the main body 36 l and parallel to the X direction are provided.
  • the scan electrode 36 is provided below the second rib member 14b, and a connection portion 36n that connects the main body portions 36k of the scan electrodes 36 in the pixel region P adjacent in the Y direction,
  • a connection portion 36o is provided below the rib member 14b and connects the main body portions 36m of the scanning electrodes 36 in the pixel region P adjacent in the Y direction.
  • the scanning electrode 36 is formed so that gaps 38e and 38e 'are provided in an orthogonal direction (Y direction) orthogonal to the moving direction of the polar liquid 16. That is, in the scanning electrode 36, the main body portion 36l is disposed at the right end portion in the Y direction, and gap portions 38e and 38e ′ are formed between the right and left second rib members 14b in FIG. Has been.
  • the reference electrode 35 and the scanning electrode 36 are arranged so that the main body portion 35m of the reference electrode 35 and the main body portion 36m of the scanning electrode 36 face each other.
  • the main body portions 35k, 35l, and 35m substantially constitute electrode portions that function as electrodes. That is, when a predetermined voltage is applied to the reference electrode 35, an electrowetting phenomenon occurs in the portion where the main body portions 35k, 35l, and 35m are provided on the display surface side surface of the lower substrate 3. The wettability (contact angle) of the polar liquid 16 changes, and the polar liquid 16 becomes movable.
  • the main body portions 36k, 36l, and 36m substantially constitute electrode portions that function as electrodes.
  • the polar liquid 16 is moved from the position shown in FIG. 27A to the right side (black matrix) of FIG.
  • a voltage to be moved to the portion 11s side is applied, on the surface of the dielectric layer 13 covering the reference electrode 35 and the scan electrode 36 on the lower substrate 3, the main body portions 35k, 35l, and 35m of the reference electrode 35 and the scan electrode
  • the wettability (contact angle) of the polar liquid 16 with respect to the surface changes due to the electrowetting phenomenon in the upper portions of the 36 main body portions 36k, 36l, and 36m.
  • the polar liquid 16 has a shape in a stationary state so that the dimension of the polar liquid 16 in the orthogonal direction perpendicular to the moving direction changes. While deforming, it moves in the direction indicated by arrow F21. For this reason, in the display space S, according to the deformation of the polar liquid 16, a flow path of the oil 17 can be secured in the upper portion of the polar liquid 16 in FIG. It moves along the flow path in the direction indicated by the arrow F22.
  • the polar liquid 16 and the oil 17 are moved to the scanning electrode 36 side and the reference electrode 35 side, respectively, and the polar liquid 16 is, as illustrated in FIG. It is completely moved to the scanning electrode 36 side (black matrix portion 11s side) and becomes stationary.
  • the present embodiment can achieve the same operations and effects as the seventh embodiment.
  • FIG. 28 is an enlarged plan view showing a main part configuration in one pixel region of the display element according to the twelfth embodiment of the present invention.
  • 29 (a) to 29 (c) are diagrams for explaining the operation of the polar liquid and oil shown in FIG.
  • the main difference between the present embodiment and the eleventh embodiment is that the reference electrode and the scan electrode are arranged symmetrically in the pixel region.
  • symbol is attached
  • the signal electrode 4, the dielectric layer 13, and the water repellent films 12 and 15 are omitted for simplification of the drawing.
  • the reference electrode 35 and the scanning electrode 36 are different from those of the eleventh embodiment in the pixel region P with respect to the center thereof. It is configured in a point-symmetric concave shape.
  • the reference electrode 35 is provided in the pixel region P so as to be parallel to the X direction, and is continuously provided on the main body portion 35p and in the Y direction.
  • a rectangular main body 35q provided to be parallel to each other, and a rectangular main body 35r provided to be continuous to the main body 35q and provided to be parallel to the X direction are provided.
  • the reference electrode 35 is provided below the second rib member 14b, and a connection portion 35s for connecting the main body portions 35p of the reference electrodes 35 in the pixel region P adjacent in the Y direction,
  • a connection portion 35t is provided below the rib member 14b and connects the main body portions 35r of the reference electrodes 35 in the pixel region P adjacent in the Y direction.
  • the reference electrode 35 is formed so that the gap portions 37f and 37f 'are provided in the orthogonal direction (Y direction) orthogonal to the moving direction of the polar liquid 16. That is, in the reference electrode 35, the main body portion 35q is disposed at the right end portion in the Y direction, and gap portions 37f and 37f ′ are formed between the right and left second rib members 14b in FIG. Has been.
  • the scanning electrode 36 is provided in the pixel region P so as to be parallel to the X direction, and is continuously provided on the main body portion 36p and parallel to the Y direction.
  • a rectangular main body portion 36q provided in this manner, and a rectangular main body portion 36r provided continuously with the main body portion 36q and parallel to the X direction are provided.
  • the scan electrode 36 is provided below the second rib member 14b, and a connection portion 36s for connecting the main body portions 36p of the scan electrodes 36 in the pixel region P adjacent in the Y direction,
  • a connecting portion 36t is provided below the rib member 14b and connects the main body portions 36r of the scanning electrodes 36 in the pixel region P adjacent in the Y direction.
  • the scanning electrode 36 is formed so that the gap portions 38f and 38f ′ are provided in the orthogonal direction (Y direction) orthogonal to the moving direction of the polar liquid 16. That is, in the scanning electrode 36, the main body portion 36q is disposed at the left end portion in the Y direction, and gap portions 38f and 38f ′ are formed between the right and left second rib members 14b in FIG. Has been.
  • the main body portion 35q of the reference electrode 35 and the main body portion 36q of the scan electrode 36 are arranged point-symmetrically with respect to the center of the pixel region P.
  • the main body portion 35r of the electrode 35 and the main body portion 36r of the scanning electrode 36 are disposed so as to face each other.
  • the main body portions 35p, 35q, and 35r substantially constitute electrode portions that function as electrodes. That is, when a predetermined voltage is applied to the reference electrode 35, an electrowetting phenomenon occurs in the portion where the main body portions 35p, 35q, and 35r are provided on the display surface side surface of the lower substrate 3. The wettability (contact angle) of the polar liquid 16 changes, and the polar liquid 16 becomes movable.
  • the main body portions 36p, 36q, and 36r constitute an electrode portion that substantially functions as an electrode.
  • the polar liquid 16 is moved from the position shown in FIG. 29A to the right side (black matrix) of FIG.
  • a voltage to be moved to the portion 11s side is applied, on the surface of the dielectric layer 13 covering the reference electrode 35 and the scan electrode 36 on the lower substrate 3, the main body portions 35p, 35q, 35r of the reference electrode 35 and the scan electrode
  • the wettability (contact angle) of the polar liquid 16 with respect to the surface changes due to the electrowetting phenomenon in the upper part of the 36 main body parts 36p, 36q, 36r.
  • the polar liquid 16 has a shape in a stationary state so that the dimension of the polar liquid 16 in the orthogonal direction orthogonal to the moving direction changes. While deforming, it moves in the direction indicated by arrow F23. For this reason, in the display space S, according to the deformation of the polar liquid 16, a flow path of the oil 17 can be secured in the lower portion of the polar liquid 16 in FIG. Then, it moves in the direction indicated by arrow F24 along the flow path.
  • the polar liquid 16 and the oil 17 move to the scanning electrode 36 side and the reference electrode 35 side, respectively, and the polar liquid 16 is, as illustrated in FIG. It is completely moved to the scanning electrode 36 side (black matrix portion 11s side) and becomes stationary.
  • the present embodiment can provide the same operations and effects as the eleventh embodiment.
  • the present invention is an electric device provided with a display unit that displays information including characters and images.
  • the present invention is not limited in any way.
  • a portable information terminal such as a PDA such as an electronic notebook, a display device attached to a personal computer, a television, or the like, or an electronic paper or other electric device including various display units. it can.
  • the electrowetting method, the electrophoresis method, and the dielectrophoresis method are configured because the electrowetting type display element that moves the polar liquid according to the electric field applied to the polar liquid is configured.
  • the polar liquid can be moved at a high speed with a low driving voltage as compared with other electric field induction type display elements.
  • the display color is changed according to the movement of the polar liquid, and unlike a liquid crystal display device using a birefringent material such as a liquid crystal layer, it is used for information display.
  • a high-luminance display element that is excellent in light utilization efficiency of light from the backlight and external light can be easily configured.
  • a switching element for each pixel it is also preferable in that a high-performance matrix driving display element having a simple structure can be configured at low cost.
  • the scanning electrode is arranged so that the flow path of the insulating fluid in the display space becomes large. There is no limitation as long as it is provided on one side of the first and second substrates.
  • a plurality of signal electrodes and a plurality of scanning electrodes are provided in a matrix so as to cross each other, and for each of a plurality of pixel regions provided in units of intersections between the signal electrodes and the scanning electrodes, A switching element such as a thin film transistor (TFT) is installed.
  • TFT thin film transistor
  • the scanning electrode is connected to the gate of the thin film transistor, and the voltage is applied from the scanning voltage application unit.
  • the signal electrode is connected to the source of the thin film transistor and voltage is applied from the signal voltage application unit, and the drain of the thin film transistor is connected to the pixel electrode provided for each pixel region to supply the voltage from the signal electrode.
  • the polar liquid may be moved.
  • the reference electrode and the reference driver reference voltage application unit
  • a transmissive display element including a backlight is configured.
  • the present invention is not limited to this, and a reflective type having a light reflecting portion such as a diffuse reflector.
  • the present invention can also be applied to a transflective display element in which the light reflecting portion and the backlight are used in combination.
  • polar liquids include zinc chloride, potassium hydroxide, sodium hydroxide, alkali metal hydroxide, zinc oxide, sodium chloride, lithium salt, phosphoric acid, alkali metal carbonate, oxygen ion conductivity.
  • polar liquids include zinc chloride, potassium hydroxide, sodium hydroxide, alkali metal hydroxide, zinc oxide, sodium chloride, lithium salt, phosphoric acid, alkali metal carbonate, oxygen ion conductivity.
  • Those containing an electrolyte such as ceramics can be used.
  • organic solvents such as alcohol, acetone, formamide, and ethylene glycol can also be used as the solvent.
  • the polar liquid of the present invention includes an ionic liquid containing a cation such as pyridine, alicyclic amine, or aliphatic amine, and an anion such as fluoride such as fluoride ion or triflate ( Room temperature molten salt) can also be used.
  • a cation such as pyridine, alicyclic amine, or aliphatic amine
  • an anion such as fluoride such as fluoride ion or triflate ( Room temperature molten salt) can also be used.
  • the polar liquid of the present invention includes a conductive liquid having conductivity and a liquid having a high dielectric constant having a specific dielectric constant of a predetermined value or higher, preferably 15 or higher.
  • the use of an aqueous solution in which a predetermined electrolyte is dissolved in a polar liquid is superior in handleability and can easily constitute a display element that is easy to manufacture. Is preferable.
  • the insulating fluid of the present invention includes a fluid having a relative dielectric constant of not more than a predetermined value, preferably not more than 5.
  • the use of nonpolar oil that is not compatible with polar liquid is more polar in the nonpolar oil than when air and polar liquid are used. It is preferable in that the liquid droplets can be moved more easily, the polar liquid can be moved at high speed, and the display color can be switched at high speed.
  • the signal electrode is provided on the upper substrate (first substrate) side and the reference electrode and the scanning electrode are provided on the lower substrate (second substrate) side has been described.
  • the signal electrode is installed inside the display space so as to be in contact with the polar liquid, and the reference electrode and the scan electrode are connected to the first and second electrodes while being electrically insulated from the polar liquid.
  • the reference electrode and the scan electrode are provided on one side of the second substrate, and the reference electrode and the scan electrode are arranged so that the flow path of the insulating fluid in the display space becomes large when the polar liquid is moved for each pixel region. What is necessary is just to be provided in the one side of the 1st and 2nd board
  • the signal electrode may be provided in the middle portion of the first and second substrates, and the reference electrode and the scan electrode may be provided on the first substrate side.
  • the present invention is not limited to this, and the reference electrode and the scan electrode May be installed on the non-effective display area side and the effective display area side, respectively.
  • the present invention is not limited to this, and the insulating material It is also possible to use a reference electrode and a scan electrode embedded in the second substrate. In such a configuration, the second substrate can be used as a dielectric layer, and the installation of the dielectric layer can be omitted.
  • the present invention is installed so as to face the effective display area of the pixel among the reference electrode and the scan electrode. It is sufficient that only one of the electrodes is made of a transparent electrode material, and an opaque electrode material such as aluminum, silver, chromium, or other metal can be used for the other electrode that is not opposed to the effective display area. .
  • the shapes of the reference electrode and the scan electrode of the present invention are not limited to this.
  • the shape may be such that light loss such as a line shape or a net shape hardly occurs.
  • the signal electrode of the present invention is not limited to this, and wiring formed in other shapes such as a mesh wiring may also be used. Can be used.
  • the present invention is not limited to this.
  • the plurality of pixel regions are provided in accordance with a plurality of colors capable of full color display on the display surface side.
  • a plurality of polar liquids colored in RGB, cyan (C), magenta (M), yellow (Y), CMY, or RGBYC can be used.
  • the color filter layer is formed on the non-display surface side of the upper substrate (first substrate).
  • the present invention is not limited to this, and the first substrate A color filter layer can be provided on the display surface side of the substrate or on the lower substrate (second substrate) side.
  • the color filter layer is preferable in that a display element which is easy to manufacture can be easily configured as compared with the case where a plurality of colors of polar liquids are prepared.
  • the color filter part (opening part) and the black matrix part (light-shielding film) included in the color filter layer appropriately and reliably provide an effective display area and an ineffective display area with respect to the display space. It is also preferable in that it can be set.
  • the present invention is useful for a display element capable of preventing display quality from being deteriorated even when gradation display is performed, and an electric device using the display element.
  • Image display device (electric equipment) 2 Upper substrate (first substrate) 3 Lower substrate (second substrate) 4 Signal electrode 5 Reference electrode 5a, 5d, 5g Body part 5b, 5e, 5e1, 5e2, 5e3, 5e4, 5h Projection part 6 Scan electrode 6a, 6d, 6g Body part 6b, 6e, 6e1, 6e2, 6e3, 6e4, 6h Protruding part 7 Signal driver (Signal voltage application part) 8 Reference driver (reference voltage application unit) 9 Scanning driver (scanning voltage application unit) DESCRIPTION OF SYMBOLS 10 Display element 11 Color filter layer 11r, 11g, 11b Color filter part (opening part) 11s Black matrix (light shielding film) 13 Dielectric layer 14 Rib 16 Polar liquid 17 Oil (insulating fluid) 25 Reference electrode 25a, 25d, 25g Body part 25b, 25e, 25h Projection part 26 Scan electrode 26a, 26d, 26g Body part 26b, 26e, 26h Projection part 35 Reference electrode 35a, 35c, 35e,

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

L'invention porte sur un élément d'affichage (10), lequel élément comprend un substrat supérieur (premier substrat) (2), un substrat inférieur (second substrat) (3) et un liquide polaire (16) qui est hermétiquement scellé de façon mobile à l'intérieur d'un espace d'affichage (S) sur le côté d'une région d'affichage effective (P1) ou sur le côté d'une région d'affichage non effective (P2). L'élément d'affichage (10) comporte : une nervure (14) qui est disposée sur le substrat inférieur (3) de façon à diviser hermétiquement l'intérieur de l'espace d'affichage (S) en fonction d'une pluralité de régions de pixel (P) ; et une huile (un fluide isolant) (17) qui est hermétiquement scellée de façon mobile dans chaque région de pixel (P) à l'intérieur de l'espace d'affichage (S), ladite huile n'étant pas mélangée au liquide polaire (16). Une électrode de référence (5) et une électrode de balayage (6) sont disposées sur le côté du substrat inférieur (3) à l'intérieur de l'espace d'affichage (S), de telle sorte qu'un grand canal pour l'huile (17) est obtenu à l'intérieur de l'espace d'affichage (S) dans des cas dans lesquels le liquide polaire (16) est déplacé dans chaque région de pixel (P).
PCT/JP2011/078745 2010-12-20 2011-12-13 Elément d'affichage et dispositif électrique l'utilisant WO2012086451A1 (fr)

Applications Claiming Priority (2)

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JP2010283475 2010-12-20
JP2010-283475 2010-12-20

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004325909A (ja) * 2003-04-25 2004-11-18 Fuji Photo Film Co Ltd 光シャッターおよびこれを用いた画像表示装置
JP2009003017A (ja) * 2007-06-19 2009-01-08 Sharp Corp 表示素子、製造方法、及び電気機器
WO2010095301A1 (fr) * 2009-02-20 2010-08-26 シャープ株式会社 Elément d'affichage et dispositif électrique utilisant celui-ci

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004325909A (ja) * 2003-04-25 2004-11-18 Fuji Photo Film Co Ltd 光シャッターおよびこれを用いた画像表示装置
JP2009003017A (ja) * 2007-06-19 2009-01-08 Sharp Corp 表示素子、製造方法、及び電気機器
WO2010095301A1 (fr) * 2009-02-20 2010-08-26 シャープ株式会社 Elément d'affichage et dispositif électrique utilisant celui-ci

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