WO2008053561A1 - Élément de étection de champ électrique et dispositif d'affichage utilisant celui-ci - Google Patents
Élément de étection de champ électrique et dispositif d'affichage utilisant celui-ci Download PDFInfo
- Publication number
- WO2008053561A1 WO2008053561A1 PCT/JP2006/322011 JP2006322011W WO2008053561A1 WO 2008053561 A1 WO2008053561 A1 WO 2008053561A1 JP 2006322011 W JP2006322011 W JP 2006322011W WO 2008053561 A1 WO2008053561 A1 WO 2008053561A1
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- WIPO (PCT)
- Prior art keywords
- electric field
- electrode layer
- layer
- optical functional
- sensitive element
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Classifications
-
- 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
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/1514—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material
- G02F1/1523—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material comprising inorganic material
-
- 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
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/015—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on semiconductor elements with at least one potential jump barrier, e.g. PN, PIN junction
-
- 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
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/155—Electrodes
-
- 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
- G02F2202/00—Materials and properties
- G02F2202/10—Materials and properties semiconductor
Definitions
- the present invention relates to an element capable of controlling the value of visible light transmittance by applying an electric field, and a display device to which the element is applied.
- Liquid crystals and electochromic substances are known as materials whose optical transmittance changes in response to an applied electric field. Liquid crystals are already widely used in displays. Electrochromic materials are materials that exhibit chromism (reversible color change) due to electrochemical redox reactions, and have various applications such as paper-like displays. It is a possible substance. A material that is sensitive to this type of electric field has the advantage that it is easier to control in terms of the configuration of the control means than a substance that is sensitive to light or heat.
- Patent Document 1 JP 2000-502398
- the electochromic material does not require a polarizing plate or a knocklight, and thus is superior in terms of transparency in a translucent state and power consumption.
- electoric chromism involves the movement of ions in the electrolyte, it is considered difficult to improve the response speed of the response in the electoric chromic material to the same or higher than that of liquid crystals. Changes in white and black in typical liquid crystals The response speed is 10-20ms.
- the present invention provides a novel electric field sensitive element including a metal oxide that has a fast transition between states having different values of visible light transmittance.
- the electric field sensitive element of the present invention is composed of tin dioxide, titanium dioxide, and a metal oxide having a selected group force including an acid and zinc force, and an insulator covering the metal oxide.
- An optical functional layer whose visible light transmittance value changes by the application of, and first and second electrode layers sandwiching the optical functional layer.
- a display device provided by the present invention covers a support having a light surface color, a first translucent electrode layer fixed to the support, and the first translucent electrode layer.
- the optical functional layer is composed of a metal oxide selected from a group oxide such as tin dioxide, titanium dioxide, and acid zinc zinc, and an insulator covering the metal oxide. The value of visible light transmittance changes with the application of an electric field.
- the manufacturing method provided by the present invention includes a step of coating the first electrode layer fixed to a support with a translucent layer comprising the metal oxide and an insulator covering the first oxide layer, Irradiating the translucent layer with ultraviolet rays, thereby transforming the translucent layer into the optical functional layer, and fixing the second electrode layer to the optical functional layer. .
- FIG. 1 is a cross-sectional view showing a configuration of an electric field sensitive element according to an example of the present invention.
- FIG. 2 is a perspective view showing a configuration of a display device according to an example of the present invention.
- FIG. 3 is a photograph of an oscilloscope waveform showing the response of the electric field sensitive element according to the first example of the present invention.
- FIG. 4 is a photograph of an oscilloscope waveform showing the responsiveness of an electric field sensitive element according to a second example of the present invention.
- FIG. 5 is an explanatory diagram of the operation principle of the electric field sensitive element according to the embodiment of the present invention.
- the present inventor has applied an electric field when a semiconductor oxide having a band gap of 3.2 eV or more and translucent metal oxide is provided with an effective excitation energy in a state of being covered with an insulating coating. It has been found that the material can change the value of visible light transmittance. Tin dioxide ( SnO), titanium dioxide (TiO) and zinc oxide (ZnO) fall under the above metal oxides.
- the Insulation coating materials include thermoplastic resin such as polyethylene, polypropylene, polystyrene, polybutadiene, polychlorinated butyl, polymethyl methacrylate, polyamide, polycarbonate, polyimide, cellulose acetate, phenol resin, amino resin, unsaturated resin
- thermosetting resins such as polyester resin, aryl resin, alkyd resin, epoxy resin, polyurethane, silicone resin.
- silicone polysiloxane
- paraffin mineral oil
- magnesium oxide MgO
- SiO 2 silicon dioxide
- Al 2 O 3 alumina
- the electric field sensitive element 1 By sandwiching the substance between electrode layers made of different materials as shown in Fig. 1, the electric field sensitive element 1 in which the value of visible light transmittance is reversibly changed is realized.
- the electric field sensitive element 1 includes an optical functional layer 5 whose visible light transmittance value changes by application of an electric field, a first electrode layer 7, and a second electrode layer 9.
- the first electrode layer 7 is a single layer
- the second electrode layer 9 is composed of a lower layer 9A, which is different from the material of the first electrode layer 7, and a material of the first electrode layer. It consists of the upper layer 9B which is the same as the material of 7.
- the lower layer 9A can be formed sufficiently thick and the upper layer 9B can be omitted.
- the lower layer 9 A has a role of preventing unnecessary electron injection into the upper layer 9 B force optical function layer 5.
- a reversible state change can be caused.
- the display device 10 includes a substrate 11 having a light surface color, strip-shaped first electrodes 17 arranged in parallel to be fixed to the substrate 11, an optical function layer 15, and an array in parallel to be fixed to the optical function layer 15.
- a strip-shaped second electrode 19 is provided.
- the first electrode 17 and the second electrode 19 intersect to form an electrode matrix.
- the electric field sensitive element 1 corresponds to each intersection of the electrode matrix. That is, the first electrode layer 17, the optical functional layer 15, and the second electrode 19 have partial forces corresponding to the first electrode layer 7, the optical functional layer 5, and the second electrode layer 9.
- the position of one electric field sensing element 1 is indicated by a dashed-dotted line.
- the display device 10 can perform matrix display by controlling the amount of external light reflected by the substrate 11 for each element.
- the first and second electric field sensitive elements 1 As the electrode layers 7 and 9, it is necessary to provide a translucent conductive layer made of, for example, indium tin oxide (hereinafter referred to as ITO).
- ITO indium tin oxide
- the first electrode layer 7 is ITO
- a transparent semiconductor is preferable as the material for the lower layer of the second electrode layer 9.
- the display device 10 and the electric field sensitive manufacturing method included in the display device 10 include the following steps 1 to 4.
- step 1 the first electrode 17 is arranged on the substrate 11 serving both as a support and a reflecting member.
- the first electrode 11 fixed to the substrate 11 is covered with a light-transmitting layer made of a metal oxide and an insulator covering the first electrode.
- Metal oxide is a compound selected from the group power of tin dioxide, titanium dioxide, and zinc oxide power.
- step 3 the light-transmitting layer is irradiated with ultraviolet rays, whereby the light-transmitting layer is transformed into an optical functional layer 15 exhibiting chromism.
- energy levels are considered to be formed in metal oxides by ultraviolet excitation as described later.
- step 4 the second electrode 19 is arranged on the optical functional layer 15.
- the optical functional layer 5 is composed of tin oxide (SnO), which is a metal oxide, and an insulator.
- the thickness of the optical functional layer 5 is 1 ⁇ m.
- the first electrode layer 7 is ITO having a thickness of 0.4 m.
- the lower layer 9A of the second electrode layer 9 is 0.1 ⁇ m thick nickel oxide (NiO), and the upper layer 9B is 0.4 ⁇ m thick ITO.
- the optical functional layer 5 was formed by the following procedure.
- a mixed solution of 0.75 g of tin cabronate, 1.28 g of xylene and 0. lg of silicone oil (TSF433 manufactured by Toshiba Silicone) was prepared.
- the above-mentioned mixed solution was applied by spin-on (1200 rpm, lOsec) to the white glass plate to which the first electrode layer 7 had been fixed, dried by exposure to lOmin in a 50 ° C. atmosphere, and then fired.
- the firing temperature is 320 ° C and the firing time is lOmin.
- the fired layer was irradiated with ultraviolet rays using a low-pressure mercury lamp. Irradiation conditions are 200mWZcm 2 and 60min.
- the lower layer 9A and the upper layer 9B were laminated by sputtering to complete the production of the electric field sensitive element 1.
- a voltage pulse signal was applied to the electric field sensitive element 1.
- the first electrode layer 7 was connected to the potential output terminal of the pulse generator, and the second electrode layer 9 (strictly, the upper layer 9B) was connected to the ground terminal. As shown in the upper half of Fig.
- a positive pulse with an amplitude of +10 V and a pulse width of 20 ms and a negative pulse with an amplitude of 20 V and a pulse width of 20 ms were repeatedly applied with an interval of about 500 ms.
- the transmittance of the electric field sensitive element 1 with respect to visible light was measured using a measuring device using a light emitting diode (LED) as a light source.
- LED light emitting diode
- FIG. 3A shows that Example 1 of the electric field sensitive element 1 exhibits chromism.
- FIG. 3 (B) is a waveform diagram in which the scale of the time axis of FIG. 3 (A) is enlarged, and shows the response to the positive pulse!
- the decoloring response time was 5 ms.
- FIG. 3 (C) is also a waveform diagram obtained by enlarging the time axis scale of FIG. 3 (A), showing the response to negative polarity pulses!
- the coloring response time was 8 ms.
- Example 2 the optical functional layer 5 was insulated from titanium dioxide (TiO), which is a metal oxide.
- the thickness of the optical functional layer 5 is 1 ⁇ m.
- the materials, thicknesses, and formation methods of the first electrode layer 7 and the second electrode layer 9 are the same as in Example 1 above.
- the optical functional layer 5 was formed by the following procedure. A mixed solution of 0.72 g of titanium caproate, 1.14 g of xylene, 0.14 g of butyl sequestration solvent and 0.25 g of silicone oil (TSF433 manufactured by Toshiba Silicone) was prepared. The above-mentioned mixed solution was applied to the white plate glass to which the first electrode layer 7 was fixed by spinons (600 rpm, lOsec), dried by exposure to lOmin in a 50 ° C. atmosphere, and then fired. The firing temperature is 320 ° C and the firing time is lOmin. Next fired layer Were irradiated with ultraviolet rays using a low-pressure mercury lamp. The irradiation conditions are 200 m W / cm 2 and 60 min as in Example 1.
- the optical function of the electric field sensitive element 1 was confirmed by the same method as in Example 1. That is, as shown in the upper half of Fig. 4 (A), a positive pulse with an amplitude of +10 V and a pulse width of 20 ms and a negative pulse with an amplitude of 20 V and a pulse width of 20 ms are provided with an interval of about 500 ms. Applied repeatedly. In parallel with this, the transmittance of the electric field sensitive element 1 with respect to visible light was measured using a measuring device using an LED as a light source.
- FIG. 4A shows that Example 2 of the electric field sensitive element 1 exhibits chromism.
- FIG. 4 (B) is a waveform diagram obtained by enlarging the time axis scale of FIG. 4 (A), and shows the responsiveness to the positive pulse!
- the decoloring response time was 17 ms.
- FIG. 4 (C) is also a waveform diagram obtained by enlarging the time axis scale of FIG. 4 (A), and shows the response to negative polarity pulses.
- the color response time was 18 ms.
- a mixed liquid of 2 g of tin caproate, 3 g of xylene and 0.5 g of silicone oil (TSF433 manufactured by Toshiba Silicone Co., Ltd.) was prepared, and the mixed liquid was applied, dried, fired, and irradiated with ultraviolet rays in the same manner as in Example 1. To form an optical functional layer 5.
- the second electrode layer 9 was grounded, and a negative polarity pulse having an amplitude of 20 V and a pulse width of 10 ms was applied to the first electrode layer 7.
- the transmittance value of the electric field sensitive element 1 changed from 85% to 56%. Thereafter, the transmittance value was maintained at 56% during the period when the applied voltage was zero.
- Example 3 A mixed solution similar to that in Example 3 was prepared, and dried more rapidly than Example 3 after coating.
- Example 3 By rapidly drying the applied mixed liquid, voids due to solvent evaporation remain, and the layer after baking becomes a particle aggregate.
- the porous optical functional layer 5 improves contrast.
- the transmittance value of electric field sensitive element 1 changed from 85% to 24%.
- Fig. 5 (A) when one of the electrodes, ITO, which is a metal oxide on ITO, is irradiated with ultraviolet light, electrons in the valence band of tin dioxide are conducted. Excited by the band. In the vicinity of the interface with ITO, this electron passes through the insulator with a certain probability and is temporarily trapped in ITO, and the interatomic distance at the site where the electron in the valence band has escaped changes. The trapped electrons return to the valence band of tin dioxide again. The level at this time moves into the band gap as shown in Fig. 5 (B). Such an event occurs repeatedly, and many levels are formed in the band gap as shown in Fig.
- the role of the insulator is to create a barrier between ITO and tin dioxide and allow the excited electrons to pass. Tin dioxide undergoes a structural change when it is exposed to ultraviolet radiation with an insulator between ITO and tin dioxide.
- the transmittance value in a state where decoloring has occurred is large, it is possible to realize a reflective display device with high contrast and a bright background. Since the main component of the electric field sensitive element 1 is a solid, damage due to mechanical impact is less likely to occur compared to a configuration in which all liquids or liquids are contained. Since the structure is simple, it is advantageous for low cost.
- the insulating material is limited to a heat-resistant material that can be fired.
- a resin such as acrylic, polycarbonate, and epoxy can be used.
- the optical functional layer 5 whose structure is partially changed by ultraviolet irradiation of an arbitrary pattern can be formed, and an arbitrary shape can be displayed by a combination of the irradiation pattern and the electrode layer pattern.
- a substrate in which a reflective film is fixed to a rigid or flexible base material by lamination or painting can be used as a support for the electric field sensitive element 1.
- the present invention is useful in a power-saving display that consumes power only when the display content is substantially updated. It can be used for various optical function devices including other displays and optical shirts.
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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KR1020097008823A KR101354889B1 (ko) | 2006-11-02 | 2006-11-02 | 전계 감응 소자 및 그것을 이용한 표시 디바이스 |
JP2008541973A JP5297809B2 (ja) | 2006-11-02 | 2006-11-02 | 電界感応素子およびそれを用いた表示デバイス |
EP06822929.3A EP2078980B1 (en) | 2006-11-02 | 2006-11-02 | Electric field sensing element and display device making use of the same |
US12/312,252 US8004737B2 (en) | 2006-11-02 | 2006-11-02 | Electric-field-sensitive element and display device using the same |
CN2006800562924A CN101535885B (zh) | 2006-11-02 | 2006-11-02 | 电场感应元件及其制造方法和使用该电场感应元件的显示装置 |
PCT/JP2006/322011 WO2008053561A1 (fr) | 2006-11-02 | 2006-11-02 | Élément de étection de champ électrique et dispositif d'affichage utilisant celui-ci |
US13/213,670 US8587855B2 (en) | 2006-11-02 | 2011-08-19 | Electric-field-sensitive element and display device using the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2006/322011 WO2008053561A1 (fr) | 2006-11-02 | 2006-11-02 | Élément de étection de champ électrique et dispositif d'affichage utilisant celui-ci |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US12/312,252 A-371-Of-International US8004737B2 (en) | 2006-11-02 | 2006-11-02 | Electric-field-sensitive element and display device using the same |
US13/213,670 Continuation US8587855B2 (en) | 2006-11-02 | 2011-08-19 | Electric-field-sensitive element and display device using the same |
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WO2008053561A1 true WO2008053561A1 (fr) | 2008-05-08 |
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PCT/JP2006/322011 WO2008053561A1 (fr) | 2006-11-02 | 2006-11-02 | Élément de étection de champ électrique et dispositif d'affichage utilisant celui-ci |
Country Status (6)
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US (2) | US8004737B2 (ja) |
EP (1) | EP2078980B1 (ja) |
JP (1) | JP5297809B2 (ja) |
KR (1) | KR101354889B1 (ja) |
CN (1) | CN101535885B (ja) |
WO (1) | WO2008053561A1 (ja) |
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WO2013065093A1 (ja) * | 2011-10-30 | 2013-05-10 | 株式会社日本マイクロニクス | 繰り返し充放電できる量子電池 |
WO2013154046A1 (ja) | 2012-04-09 | 2013-10-17 | 株式会社日本マイクロニクス | 二次電池 |
WO2013161927A1 (ja) | 2012-04-27 | 2013-10-31 | 株式会社日本マイクロニクス | 二次電池 |
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WO2014017463A1 (ja) | 2012-07-24 | 2014-01-30 | 株式会社日本マイクロニクス | 充放電装置 |
JP2014032353A (ja) * | 2012-08-06 | 2014-02-20 | Ricoh Co Ltd | エレクトロクロミック表示装置・二次電池一体型固体素子 |
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US8004737B2 (en) * | 2006-11-02 | 2011-08-23 | Guala Technology Co., Ltd. | Electric-field-sensitive element and display device using the same |
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2006
- 2006-11-02 US US12/312,252 patent/US8004737B2/en active Active
- 2006-11-02 EP EP06822929.3A patent/EP2078980B1/en active Active
- 2006-11-02 KR KR1020097008823A patent/KR101354889B1/ko active IP Right Grant
- 2006-11-02 CN CN2006800562924A patent/CN101535885B/zh active Active
- 2006-11-02 WO PCT/JP2006/322011 patent/WO2008053561A1/ja active Application Filing
- 2006-11-02 JP JP2008541973A patent/JP5297809B2/ja active Active
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JPWO2015141107A1 (ja) * | 2014-03-18 | 2017-04-06 | 株式会社日本マイクロニクス | 電池 |
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Also Published As
Publication number | Publication date |
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CN101535885B (zh) | 2012-03-28 |
EP2078980A1 (en) | 2009-07-15 |
EP2078980A4 (en) | 2010-07-28 |
JPWO2008053561A1 (ja) | 2010-02-25 |
KR20090086969A (ko) | 2009-08-14 |
US20110300667A1 (en) | 2011-12-08 |
JP5297809B2 (ja) | 2013-09-25 |
EP2078980B1 (en) | 2019-01-09 |
US8004737B2 (en) | 2011-08-23 |
US20100067089A1 (en) | 2010-03-18 |
CN101535885A (zh) | 2009-09-16 |
KR101354889B1 (ko) | 2014-01-22 |
US8587855B2 (en) | 2013-11-19 |
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