WO2014030509A1 - 携帯情報機器 - Google Patents
携帯情報機器 Download PDFInfo
- Publication number
- WO2014030509A1 WO2014030509A1 PCT/JP2013/070688 JP2013070688W WO2014030509A1 WO 2014030509 A1 WO2014030509 A1 WO 2014030509A1 JP 2013070688 W JP2013070688 W JP 2013070688W WO 2014030509 A1 WO2014030509 A1 WO 2014030509A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- organic electroluminescence
- lighting panel
- portable information
- layer
- electroluminescence lighting
- Prior art date
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Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/221—Static displays, e.g. displaying permanent logos
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/875—Arrangements for extracting light from the devices
Definitions
- the present invention relates to a portable information device. More specifically, the present invention relates to a portable information device having an organic electroluminescence lighting panel that is thin, can be toned, and emits light uniformly.
- portable information devices In recent years, information devices that can be carried (hereinafter referred to as “portable information devices”) have been widely used. Mobile information devices are becoming more sophisticated and less intrusive when stored in chest pockets, bags, etc. due to market demands for mobile and wearable products and the pursuit of convenience. Technological innovations such as weight reduction are progressing.
- LEDs Light Emitting Diodes
- Patent Documents 1 to 3 There are examples of using LEDs (Light Emitting Diodes) or the like for light emission of logos of portable information devices, mobile phones, and auxiliary lights of digital cameras (see, for example, Patent Documents 1 to 3). It has been difficult to reduce the thickness and size, and in particular, it has been difficult to apply to portable information devices that require a reduction in size. In addition, the uniformity of light emission was insufficient and there was a problem in visibility. Furthermore, due to the heat generated by driving the LED, the case may be deformed. Moreover, the conventional LED use example is only monochromatic light emission, and when using it for logo light emission, for example, the user's request could not be fully satisfied.
- the use of electroluminescence as auxiliary light is disclosed in Patent Document 4, but the disclosed technique is related to the collection of auxiliary light, and there is no mention of the above-described problems related to electroluminescence.
- the present invention has been made in view of the above-described problems and circumstances, and a solution to the problem is to provide a portable information device having an organic electroluminescence lighting panel that is thin, can be toned, and emits light uniformly. is there.
- the present inventor has found that the organic electroluminescence lighting panel is integrated with the front transparent member and incorporated into the exterior member of the portable information device.
- the present invention has been found to be effective for reducing the thickness.
- a portable information device having an organic electroluminescence lighting panel, wherein the organic electroluminescence lighting panel is integrated with a front transparent member and is taken in an exterior member of the portable information device.
- the above-described means of the present invention can provide a portable information device having an organic electroluminescence lighting panel that is thin, can be toned, and emits light uniformly.
- the portable information device can be applied without increasing in size, and uniform light emission is possible, thereby solving the above-mentioned problems.
- Example of application to smartphone Example of smartphone application (back side)
- Example of configuration of organic electroluminescence lighting panel Example of configuration of tandem organic electroluminescent lighting panel
- the portable information device of the present invention is a portable information device having an organic electroluminescence lighting panel, and the organic electroluminescence lighting panel is integrated with a front transparent member and taken into an exterior member of the portable information device. It is characterized by. This feature is a technical feature common to the inventions according to claims 1 to 5.
- the organic electroluminescence lighting panel can be toned.
- the organic electroluminescence lighting panel for light emission of a logo mark or as an illumination for incoming calls.
- the portable information device is any one of a tablet information terminal, a high-function mobile phone, and a digital camera because it is particularly required to be thin.
- ⁇ is used to mean that the numerical values described before and after it are included as a lower limit value and an upper limit value.
- a portable information device refers to a small and portable information device for personal use.
- a tablet-type information terminal such as iPad (registered trademark) or an information communication function such as iPhone (registered trademark).
- High-function mobile phones, portable personal computers, digital cameras, game machines, PHS, and the like are included.
- the portable information device is a tablet information terminal, a high-function mobile phone, or a digital camera, because it is particularly required to be thin.
- the portable information device of the present invention is a portable information device having an organic electroluminescence lighting panel, and the organic electroluminescence lighting panel is integrated with a front transparent member and taken into an exterior member of the portable information device. It is characterized by.
- the LED is a point light source
- measures such as taking a distance between the diffusion surface and the LED and providing a light guide plate, which makes it difficult to reduce the thickness.
- the organic electroluminescence lighting panel is thin and has a light emitting part itself, and is a surface light source. Therefore, it is suitable for thinning the equipment and uniform illumination.
- simply replacing the LED with an organic electroluminescence lighting panel makes organic electroluminescence. Since the illumination panel contains an organic material, it cannot be reflowed onto the substrate, and since it is a surface light source, there is a problem that the mounting area is relatively large and the size of the substrate is increased.
- the above-mentioned problem can be solved by integrating the organic electroluminescence lighting panel and the front transparent member, treating them as one component, and taking them into the exterior substrate.
- FIG. 1 is an example of a sectional view of a portable information device according to the present invention.
- An organic electroluminescence lighting panel 1 made of an organic electroluminescence element and a front transparent member 2 are integrated with each other through a transparent adhesive 3, and are taken into an exterior member 4a using a double-sided tape 5.
- a diffusion plate 6 is provided on the surface of the front transparent member 2 opposite to the organic electroluminescence lighting panel 1.
- the circuit board 7 is on the exterior member 4b on the opposite side (rear surface) to the exterior member 4a to which the organic electroluminescence lighting panel 1 is attached.
- the circuit board 7 is connected to the organic electroluminescence lighting panel 1 via the flexible wiring 8, the organic electroluminescence lighting panel connector 9, and the circuit board side connector 10.
- FIG. 2 is a schematic diagram showing an example of application to a smartphone.
- FIG. 2A shows the surface of the smartphone.
- the organic electroluminescence lighting panel 1 has a light emitting unit 23 that can emit a logo mark or a product name.
- the light emitting unit 23 can also be used as an illumination when a call or mail is received.
- FIG. 2B shows the back side of the smartphone.
- a light emitting unit 24 that can emit light by organic electroluminescence illumination as auxiliary light such as a flash can be provided above the photographing lens 22.
- the light emitting portion is a light emitting portion of the organic electroluminescence lighting panel integrated with the front transparent member and taken into the exterior member 4 as viewed from the outside of the exterior member.
- FIG. 3 shows an example of application to a tablet terminal.
- FIG. 3A shows the tablet and the surface of the terminal.
- the organic electroluminescence lighting panel 1 has a light emitting unit 23 that can emit a logo mark or a product name.
- FIG. 3B shows the tablet and the back side of the terminal.
- the organic electroluminescence lighting panel 1 has a light emitting portion 23 that can emit a logo mark or a product name.
- Organic electroluminescence lighting panel integrated with front transparent member is integrated with the front transparent member.
- the integrated configuration includes at least an organic electroluminescent lighting panel 1 made of an organic electroluminescent element, a front transparent member 2, a transparent adhesive 3, a flexible wiring 8, and an organic electroluminescent lighting panel connector 9. You may provide the double-sided tape 5, the diffusion plate 6, etc. as needed.
- the front transparent member 2 is made of a resin member such as polycarbonate resin or acrylic resin having light transmittance, and is fixed to the exterior cover.
- a fixing method for example, a double-sided tape can be used.
- an organic electroluminescence lighting panel a light extraction function is imparted on the panel surface, for example, a PET sheet imparted with a diffusivity is attached to improve the extraction efficiency, that is, the light emission efficiency.
- the organic electroluminescence lighting panel and the front transmissive member are optically integrated by bonding, the luminous efficiency is improved by providing diffusibility on the front transmissive member surface. To do.
- a diffusion plate 6 can be attached, or embossed irregularities can be formed on the surface of the front transparent member to impart diffusibility.
- embossed irregularities can be formed on the surface of the front transparent member to impart diffusibility.
- the transparent adhesive 3 used for bonding the organic electroluminescence lighting panel 1 to the front transparent member 2 made of polycarbonate resin or acrylic resin uses a light-transmitting adhesive.
- materials there are acrylic, silicon, and polyether adhesives. However, they are light-transmitting, and it is sufficient that they can adhere to each other without leaving an air layer between the front transparent member and the panel after bonding. Since the refractive index of these adhesives is larger than air and is about 1.5, the light emitted from the organic electroluminescence lighting panel is incident on the transparent member without being totally reflected by the panel surface. Therefore, it is optically equivalent to increasing the thickness of the organic electroluminescence lighting panel.
- a flexible wiring 8 for current supply and control signal is drawn out, and the current supply and organic electroluminescence lighting panel are connected by connecting the connector at the tip of the wiring to the connector on the circuit board. Is controlled.
- a method may be used in which connector pins are provided and contacts are established after the exterior cover is fastened.
- Organic electroluminescence lighting panel is composed of an organic electroluminescence element, and the organic electroluminescence lighting panel and the front transparent member are integrated and incorporated into an exterior member of a portable information device. It is preferable that the organic electroluminescent lighting panel can be toned. Moreover, it is preferable to use the said organic electroluminescent illumination panel as auxiliary light at the time of imaging
- the exterior member may include a plurality of light emitting portions which are integral with the front transparent member and are the surface portion of the organic electroluminescence illumination taken into the exterior member 4.
- it can have illumination of a logo mark, illumination at the time of incoming call, and auxiliary light at the time of photographing.
- a single organic electroluminescence lighting panel can also serve as light emission of a logo mark, illumination at the time of incoming call, and light emission of auxiliary light. In this case, the light amount and the emission color can be controlled by the circuit board.
- the light emission luminance in the case of logo mark light emission and illumination at the time of incoming call is preferably in the range of 50 to 800 cd / m 2 , and in the case of flash light emission as auxiliary light, it is preferably in the range of 5000 to 80000 cd / m 2 .
- the luminous flux in the case of the light emission of the logo mark or the illumination at the time of incoming is in the range of 0.024 to 0.380 lm, and in the case of flash emission as auxiliary light, it is preferably in the range of 2.5 to 40 lm.
- the flash light is preferably white light including blue light emission, green light emission, and red light emission from the viewpoint of color rendering.
- the size of the light emitting part is preferably within 50% of the area of the front surface or the back surface. Preferably, it is in the range of 2 to 30%. In an organic electroluminescence lighting panel, since heat generation is small, even if it is located locally or its light emitting area is small, it does not cause distortion or the like in the housing or the like.
- an organic electroluminescence lighting panel that realizes the above-described conditions is a panel having white luminescence, and an organic electroluminescence having a luminescent layer containing a blue luminescent compound, a green luminescent compound, and a red luminescent compound as a luminescent compound.
- a lighting panel is preferred.
- an organic electroluminescence lighting panel has pixels of different emission colors arranged two-dimensionally in a plane direction, and controls the emission conditions of these pixels to adjust the emission colors of the panel; 2) A method of controlling the emission color by laminating two or more emission layers of different emission colors and moving the emission center by adjusting the drive of current and voltage.
- a method of controlling the emission color by laminating two or more emission layers of different emission colors, and adjusting an electrochromic element, a photochromic element and a thermochromic element in the middle of the emission layer 4) A plurality of light emitting units having light emitting layers of two or more different light emitting colors are stacked, an intermediate electrode is provided between the light emitting units, and the light emitting units are driven to control the light emitting color.
- Method 5) A method in which two or more organic electroluminescence lighting panels having high light transmittance are stacked and installed, and the emission color is controlled by adjusting the emission driving for each panel, These methods can be used, and these methods can be used alone or in appropriate combination.
- the main structure of the organic electroluminescence lighting panel has a pair of surface electrodes (anode and cathode) on a support substrate, and an organic functional layer including an organic light emitting layer between the surface electrodes.
- the layer there are usually a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, etc. from the anode side, but the number of layers can be reduced as a composite layer depending on the characteristics of the material used. It is also possible to add a new functional layer.
- Organic electroluminescence lighting panel refer to “Organic EL Handbook” (supervised by Tetsuo Tsutsui; published by Realize Science and Technology Center).
- FIG. 4 is a schematic sectional view showing an example of the configuration of the organic electroluminescence lighting panel according to the present invention.
- an organic electroluminescence lighting panel 40 is formed on a supporting substrate 41 made of a light-transmitting plastic film or glass, for example, an indium-tin composite oxide (hereinafter abbreviated as ITO) as an anode.
- Transparent electrode 42 is provided, and an organic functional layer unit C is formed thereon.
- the organic functional layer unit C includes organic functional layers 43 and 45 such as a hole transport layer, a hole blocking layer, and an electron transport layer.
- an electrode 46 such as aluminum is provided as a cathode, and finally a sealing member (sealing layer) 47 is provided as the outermost layer.
- FIG. 5 is a schematic cross-sectional view showing an example of the configuration of a tandem organic electroluminescence lighting panel in which a plurality of light emitting layers are stacked.
- the organic electroluminescence lighting panel 50 shown in FIG. 5 has a light emitting layer laminated thereon.
- the light emitting layer 44 in FIG. 4 is composed of three layers: a blue light emitting layer 54a containing a blue light emitting compound, a green light emitting layer 54b containing a green light emitting compound, and a red light emitting layer 54c having a red light emitting compound. Is different.
- An intermediate layer may be provided between the light emitting layers.
- providing an intermediate electrode between the light emitting layers is a preferable mode because color adjustment is facilitated.
- the layer structure of the organic electroluminescence lighting panel shown in FIGS. 4 and 5 is merely a preferred specific example, and the present invention is not limited to these.
- the structure of the organic electroluminescence lighting panel according to the present invention may have the following layer structures (i) to (v).
- the light emitting layers described below are preferably composed of a blue light emitting layer, a green light emitting layer, and a red light emitting layer as described in FIG.
- Support substrate / anode / light emitting layer / electron transport layer / cathode / sealing adhesive / sealing member (ii) Support substrate / anode / hole transport layer / light emitting layer / electron transport layer / cathode / sealing Adhesive / sealing member (iii) support substrate / anode / hole transport layer / light emitting layer / hole blocking layer / electron transport layer / cathode / sealing adhesive / sealing member (iv) support substrate / anode / Hole transport layer / light emitting layer / hole blocking layer / electron transport layer / cathode buffer layer / cathode / sealing adhesive / sealing member (v) support substrate / anode / anode buffer layer / hole transport layer / Light emitting layer / hole blocking layer / electron transport layer / cathode buffer layer / cathode / sealing adhesive / sealing member [Organic electroluminescence lighting panel configuration] Next,
- the injection layer can be provided as necessary.
- the injection layer includes an electron injection layer (also referred to as a cathode buffer layer) and a hole injection layer (also referred to as an anode buffer layer). As described above, between the anode and the light emitting layer or the hole transport layer, and between the cathode and the light emission. You may exist between a layer or an electron carrying layer.
- the injection layer referred to in the present invention is a layer provided between the electrode and the organic functional layer in order to lower the driving voltage and improve the light emission luminance.
- the organic EL element and its industrialization front line June 30, 1998, NT. The details are described in Chapter 2, “Electrode Materials” (pages 123 to 166) of the second volume of “S.
- the hole injection layer Details of the hole injection layer are described, for example, in JP-A-9-45479, JP-A-9-260062, and JP-A-8-288069.
- the hole injection material include triazole derivatives, oxadiazole derivatives, imidazole derivatives, pyrazoline derivatives and pyrazolone derivatives, phenylenediamine derivatives, arylamine derivatives, amino-substituted chalcone derivatives, oxazole derivatives, styrylanthracene derivatives, fluorenone derivatives, hydrazone derivatives, stilbene derivatives.
- Derivatives polymers containing silazane derivatives and the like, aniline copolymers, polyarylalkane derivatives, or conductive polymers may be mentioned, preferably polythiophene derivatives, polyaniline derivatives, polypyrrole derivatives, and more preferably It is a polythiophene derivative.
- the electron injection layer may or may not be provided.
- the details of the electron injection layer applicable in the present invention are described in, for example, JP-A-6-325871, JP-A-9-17574, JP-A-10-74586, and the like.
- Metal buffer layer typified by strontium or aluminum
- alkali metal compound buffer layer typified by lithium fluoride
- alkaline earth metal compound buffer layer typified by magnesium fluoride
- oxide buffer layer typified by aluminum oxide Etc.
- the buffer layer (injection layer) is desirably a very thin film, and potassium fluoride and sodium fluoride are preferable.
- the film thickness is about 0.1 nm to 5 ⁇ m, preferably 0.1 to 100 nm, more preferably 0.5 to 10 nm, and most preferably 0.5 to 4 nm.
- hole transport layer As the hole transport material constituting the hole transport layer according to the present invention, the same compounds as those applied in the hole injection layer can be used. It is preferable to use a compound, an aromatic tertiary amine compound and a styrylamine compound, particularly an aromatic tertiary amine compound.
- the hole transport layer can be formed by applying and drying using a wet coating method (for example, a spin coating method, a casting method, a printing method including an inkjet method, etc.).
- a wet coating method for example, a spin coating method, a casting method, a printing method including an inkjet method, etc.
- the hole transport material is formed by thinning it by a known method such as a vacuum deposition method or a Langmuir-Blodgett method (LB method). be able to.
- LB method Langmuir-Blodgett method
- the electron transport layer according to the present invention is made of a material having a function of transporting electrons, and in a broad sense, an electron injection layer and a hole blocking layer are also included in the electron transport layer.
- the electron transport layer may be a single layer or a plurality of layers. For example, it can be used as a hole block layer / electron transport layer combination.
- the electron transport layer When the electron transport layer is a single layer or a plurality of layers, it is injected from the cathode as an electron transport material (also serving as a hole blocking material) used for the electron transport layer adjacent to the light emitting layer on the cathode side.
- an electron transport material also serving as a hole blocking material
- any material can be selected and used from among conventionally known compounds.
- fluorene derivatives, carbazole derivatives, azacarbazole And metal complexes such as derivatives, oxadiazole derivatives, triazole derivatives, silole derivatives, pyridine derivatives, pyrimidine derivatives, 8-quinolinol derivatives, and the like.
- the light emitting layer constituting the organic electroluminescence lighting panel according to the present invention is a layer that emits light by recombination of electrons and holes injected from the electrode or the electron transport layer and the hole transport layer.
- the light emitting portion may be in the light emitting layer or at the interface between the light emitting layer and the adjacent layer.
- the light emitting layer is mainly composed of a dopant and a host compound.
- the material for forming the light emitting layer according to the present invention is preferably a low molecular weight organic compound.
- a low molecular weight compound is a compound having a molecular weight of 1500 or less.
- Host compound As the host compound contained in the light emitting layer of the organic electroluminescence lighting panel according to the present invention, a compound having a phosphorescence quantum yield of phosphorescence emission at room temperature (25 ° C) of less than 0.1 is used. preferable. More preferably, the phosphorescence quantum yield is less than 0.01. Further, the non-light emitting organic material may contain a host compound.
- luminescent colors can be obtained by using a plurality of known host compounds and luminescent materials described later, and by mixing these, any luminescent color, for example, white luminescence can be expressed. it can.
- Light-Emitting Material As the light-emitting material according to the present invention, a fluorescent light-emitting material and a phosphorescent light-emitting material (also referred to as a phosphorescent dopant) can be used, and a phosphorescent dopant is preferable. .
- the phosphorescent light-emitting material can be appropriately selected from known materials used for the light-emitting layer of the organic electroluminescence lighting panel, but is preferably a complex containing a group 8-10 metal in the periodic table of elements.
- System compounds more preferably iridium compounds, osmium compounds, platinum compounds (platinum complex compounds), rare earth complexes, and most preferred are iridium compounds.
- an electrode having a work function (4 eV or more) metal, alloy, electrically conductive compound and a mixture thereof as an electrode material is preferably used.
- electrode materials include metals such as Au, and conductive transparent materials such as CuI, indium tin oxide (ITO), SnO 2 , and ZnO.
- an amorphous material such as IDIXO (In 2 O 3 —ZnO) capable of forming a transparent conductive film may be used.
- the anode may be formed by depositing a thin film of these electrode materials by vapor deposition or sputtering, and a pattern having a desired shape may be formed by photolithography, or when pattern accuracy is not so high (about 100 ⁇ m or more) A pattern may be formed through a mask having a desired shape at the time of vapor deposition or sputtering of the electrode material.
- a wet film forming method such as a printing method or a coating method can be used.
- the transmittance be greater than 10%, and the sheet resistance as the anode is preferably several hundred ⁇ / ⁇ or less.
- the film thickness depends on the material, it is usually selected in the range of 10 to 1000 nm, preferably 10 to 200 nm.
- cathode a material having a low work function (4 eV or less) metal (referred to as an electron injecting metal), an alloy, an electrically conductive compound, and a mixture thereof is used.
- Electrode materials include sodium, sodium-potassium alloy, magnesium, lithium, magnesium / copper mixture, magnesium / silver mixture, magnesium / aluminum mixture, magnesium / indium mixture, aluminum / aluminum oxide (Al 2 O 3 ) Mixtures, indium, lithium / aluminum mixtures, rare earth metals and the like.
- a mixture of an electron injecting metal and a second metal which is a stable metal having a larger work function than this for example, a magnesium / silver mixture, Magnesium / aluminum mixtures, magnesium / indium mixtures, aluminum / aluminum oxide (Al 2 O 3 ) mixtures, lithium / aluminum mixtures, aluminum and the like are preferred.
- the cathode can be produced by forming a thin film of these electrode materials by a method such as vapor deposition or sputtering.
- the sheet resistance as the cathode is preferably several hundred ⁇ / ⁇ or less, and the film thickness is usually selected in the range of 10 nm to 5 ⁇ m, preferably 50 to 200 nm.
- either the anode or the cathode of the organic electroluminescence element may be transparent or semi-transparent, but it is preferable that the light does not leak to the back surface of the organic electroluminescence lighting panel. .
- Support Substrate As a support substrate (hereinafter also referred to as a base, substrate, base material, support, etc.) that can be used in the organic electroluminescence element of the present invention, there is no particular limitation on the type of glass, plastic, etc. However, since it is easy to extract light from the support substrate side by using the support substrate as a transparent material, the support substrate is preferably transparent.
- the transparent support substrate that can be used include glass, quartz, and a transparent resin film.
- a particularly preferable support substrate is a resin film capable of imparting flexibility to the organic electroluminescence element.
- polyesters such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), polyethylene, polypropylene, cellophane, cellulose diacetate, cellulose triacetate (TAC), cellulose acetate butyrate, cellulose acetate propionate ( CAP), cellulose esters such as cellulose acetate phthalate, cellulose nitrate or derivatives thereof, polyvinylidene chloride, polyvinyl alcohol, polyethylene vinyl alcohol, syndiotactic polystyrene, polycarbonate, norbornene resin, polymethylpentene, polyether ketone, polyimide , Polyethersulfone (PES), polyphenylene sulfide, polysulfones Cycloolefin resins such as polyetherimide, polyetherketoneimide, polyamide, fluororesin, nylon, polymethylmethacrylate, acrylic or polyarylate, Arton (trade name, manufactured by JSR) or Appel (trade name, manufactured by J
- the portable information device of the present invention is a portable information device having an organic electroluminescence lighting panel that is thin, toned, and emits light uniformly, and is suitable for a tablet-type information terminal, a high-function mobile phone, a digital camera, or the like. Can be used.
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Abstract
Description
本発明では、携帯情報機器とは、個人ユースで小型で携帯可能な情報機器をいい、例えば、iPad(登録商標)のようなタブレット型情報端末、iPhone(登録商標)のような情報通信機能を有する高機能携帯電話機、携帯型パーソナルコンピュータ、デジタルカメラ、ゲーム機及びPHSなどが含まれる。
本発明の携帯情報機器は、有機エレクトロルミネッセンス照明パネルを有する携帯情報機器であって、該有機エレクトロルミネッセンス照明パネルが、前面透過性部材と一体となり、携帯情報機器の外装部材に取り込まれていることを特徴とする。
本発明において有機エレクトロルミネッセンス照明パネルは、前面透過性部材と一体になっている。一体となっている構成には、少なくとも有機エレクトロルミネッセンス素子からなる有機エレクトロルミネッセンス照明パネル1、前面透過性部材2、透明接着剤3、フレキシブル配線8及び有機エレクトロルミネッセンス照明パネルコネクタ9が含まれる。必要に応じ両面テープ5及び拡散板6等を設けても良い。
本発明に係る有機エレクトロルミネッセンス照明パネルは、有機エレクトロルミネッセンス素子からなり、有機エレクトロルミネッセンス照明パネルと前面透過性部材とが一体となり、携帯情報機器の外装部材に取り込まれている。有機エレクトロルミネッセンス照明パネルは、調色可能であることが好ましい。また、前記有機エレクトロルミネッセンス照明パネルを撮影時の補助光として使用することが好ましい。さらに有機エレクトロルミネッセンス照明パネルをロゴマークの発光に使用することが好ましい。また、着信時のイルミネーションとして使用することも好ましい。
前面透過性部材と一体となり外装部材4に取り込まれた有機エレクトロルミネッセンス照明の表面部分である発光部は、外装部材に複数あってもよい。有機エレクトロルミネッセンス照明パネルが複数ある場合、ロゴマークの発光や着信時のイルミネーションと撮影時の補助光をそれぞれ有することができる。あるいは、一つの有機エレクトロルミネッセンス照明パネルで、ロゴマークの発光や着信時のイルミネーションと補助光の発光を兼ねることもできる。この場合は、回路基板で、光量、発光色を制御することができる。
本発明でいう調色可能とは、有機エレクトロルミネッセンス照明パネルを発光する際に、任意の色で発光させることが可能であり、光の三原色の他に、各種中間色で発光可能であることを意味する。上記条件を実現する有機エレクトロルミネッセンス照明パネルは、白色発光性を備えたパネルで、発光性化合物として、青色発光性化合物、緑色発光性化合物及び赤色発光性化合物を含有する発光層を有する有機エレクトロルミネッセンス照明パネルであることが好ましい。
1)有機エレクトロルミネッセンス照明パネルが面方向に2次元配列された異なる発光色の画素を有し、それらの画素の発光条件をコントロールして、パネルの発光色を調色する方法、
2)2つ以上の異なる発光色の発光層を積層しておいて、電流や電圧の駆動を調整することによって発光中心を移動させて、発光色をコントロールする方法、
3)2つ以上の異なる発光色の発光層を積層しておいて、該発光層の中間に、エレクトロクロミック素子、フォトクロミック素子及びサーモクロミック素子を設けて調整し、発光色をコントロールする方法、
4)2つ以上の異なる発光色の発光層を有する発光ユニットを複数ユニット分積層しておいて、該発光ユニット間に中間電極を設け、該発光ユニットごとに駆動して、発光色をコントロールする方法、
5)光透過率の高い2以上の有機エレクトロルミネッセンス照明パネルを重ねて設置し、パネルごとに発光駆動を調整して発光色をコントロールする方法、
などが挙げられ、これらの方法を単独、あるいは適宜組み合わせることができる。
有機エレクトロルミネッセンス照明パネルの主な構成は、支持基板上に対となる面電極(陽極、陰極)を有し、該面電極間に有機発光層を含む有機機能層を有してなり、有機機能層としては通常、陽極側から、正孔注入層、正孔輸送層、発光層、電子輸送層、電子注入層などがあるが、用いる材料の特性に応じて複合層として層数を減らしてもよいし、さらに新たな機能層を追加しても良い。有機エレクトロルミネッセンス照明パネルの構成については、「有機ELハンドブック」(監修:筒井哲夫;リアライズ理工センター出版)などが参照される。
(ii)支持基板/陽極/正孔輸送層/発光層/電子輸送層/陰極/封止用接着剤/封止部材
(iii)支持基板/陽極/正孔輸送層/発光層/正孔阻止層/電子輸送層/陰極/封止用接着剤/封止部材
(iv)支持基板/陽極/正孔輸送層/発光層/正孔阻止層/電子輸送層/陰極バッファー層/陰極/封止用接着剤/封止部材
(v)支持基板/陽極/陽極バッファー層/正孔輸送層/発光層/正孔阻止層/電子輸送層/陰極バッファー層/陰極/封止用接着剤/封止部材
〔有機エレクトロルミネッセンス照明パネルの構成〕
次いで、本発明に係る有機エレクトロルミネッセンス照明パネルの各構成部材について説明する。
本発明に係る有機エレクトロルミネッセンス照明パネルにおいては、注入層は必要に応じて設けることができる。注入層としては電子注入層(陰極バッファー層ともいう。)と正孔注入層(陽極バッファー層ともいう。)があり、上記の如く陽極と発光層又は正孔輸送層の間、及び陰極と発光層又は電子輸送層との間に存在させてもよい。
本発明に係る正孔輸送層を構成する正孔輸送材料としては、上記正孔注入層で適用するのと同様の化合物を使用することができるが、さらには、ポルフィリン化合物、芳香族第3級アミン化合物及びスチリルアミン化合物、特に芳香族第3級アミン化合物を用いることが好ましい。
本発明に係る電子輸送層は、電子を輸送する機能を有する材料からなり、広い意味で電子注入層、正孔ブロック層も電子輸送層に含まれる。電子輸送層は単層で用いてもよいし、複数層設けることもできる。例えば、正孔ブロック層/電子輸送層の組み合わせとして用いることができる。
本発明に係る有機エレクトロルミネッセンス照明パネルを構成する発光層は、電極又は電子輸送層及び正孔輸送層から注入されてくる電子及び正孔が再結合して発光する層であり、発光する部分は発光層の層内であっても発光層と隣接層との界面であってもよい。
本発明に係る有機エレクトロルミネッセンス照明パネルの発光層に含有されるホスト化合物としては、室温(25℃)におけるリン光発光のリン光量子収率が0.1未満の化合物が好ましい。さらに好ましくはリン光量子収率が0.01未満である。また、非発光性有機材料にはホスト化合物を含んでいてもよい。
本発明に係る発光材料としては、蛍光性発光材料、リン光発光材料(リン光性ドーパントともいう。)を用いることができるが、リン光性ドーパントであることが好ましい。
有機エレクトロルミネッセンス素子における陽極としては、仕事関数の大きい(4eV以上)金属、合金、電気伝導性化合物及びこれらの混合物を電極物質とするものが好ましく用いられる。このような電極物質の具体例としては、Au等の金属、CuI、インジウムチンオキシド(ITO)、SnO2、ZnO等の導電性透明材料が挙げられる。
一方、陰極としては仕事関数の小さい(4eV以下)金属(電子注入性金属と称する。)、合金、電気伝導性化合物及びこれらの混合物を電極物質とするものが用いられる。
本発明の有機エレクトロルミネッセンス素子に用いることのできる支持基板(以下、基体、基板、基材、支持体等ともいう)としては、ガラス、プラスチック等の種類には特に限定はないが、支持基板側から光を取り出す方が、支持基板を透明材料とすることで、容易に行えるので、支持基板は透明であることが好ましい。
2 前面透過性部材
3 透明接着剤
4、4a、4b 外装部材
5 両面テープ
6 拡散板
7 回路基板
8 フレキシブル配線
9 有機エレクトロルミネッセンス照明パネルコネクタ
10 回路基板側コネクタ
21 表示画面
22 撮影用レンズ
23 発光部(ロゴマーク又は着信時のイルミネーション)
24 発光部(補助光)
40、50 有機エレクトロルミネッセンス照明パネル
41、51 支持基板
42、52 透明電極(陽極)
43、45、53、55 有機機能層
44 有機発光層
54a 青色発光層
54b 青色発光層
54c 青色発光層
46、56 電極
47、57 封止部材
C 有機機能層ユニット
Claims (6)
- 有機エレクトロルミネッセンス照明パネルを有する携帯情報機器であって、該有機エレクトロルミネッセンス照明パネルが、前面透過性部材と一体となり、携帯情報機器の外装部材に取り込まれていることを特徴とする携帯情報機器。
- 前記有機エレクトロルミネッセンス照明パネルが、調色可能であることを特徴とする請求項1に記載の携帯情報機器。
- 前記有機エレクトロルミネッセンス照明パネルを撮影時の補助光として使用することを特徴とする請求項1又は2に記載の携帯情報機器。
- 前記有機エレクトロルミネッセンス照明パネルをロゴマークの発光に使用することを特徴とする請求項1から3までのいずれか一項に記載の携帯情報機器。
- 前記有機エレクトロルミネッセンス照明パネルを着信時のイルミネーションとして使用することを特徴とする請求項1から4までのいずれか一項に記載の携帯情報機器。
- 前記携帯情報機器が、タブレット型情報端末、高機能携帯電話機又はデジタルカメラのいずれかであることを特徴とする請求項1から5までのいずれか一項に記載の携帯情報機器。
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US14/420,263 US20150228698A1 (en) | 2012-08-20 | 2013-07-31 | Portable information appliance |
JP2014531564A JPWO2014030509A1 (ja) | 2012-08-20 | 2013-07-31 | 携帯情報機器 |
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JP2012181276 | 2012-08-20 | ||
JP2012-181276 | 2012-08-20 |
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WO2014030509A1 true WO2014030509A1 (ja) | 2014-02-27 |
Family
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PCT/JP2013/070688 WO2014030509A1 (ja) | 2012-08-20 | 2013-07-31 | 携帯情報機器 |
Country Status (3)
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US (1) | US20150228698A1 (ja) |
JP (1) | JPWO2014030509A1 (ja) |
WO (1) | WO2014030509A1 (ja) |
Families Citing this family (3)
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DE102015122298A1 (de) * | 2015-12-18 | 2017-06-22 | Scheller Oberflächentechnik GmbH | Handycover |
CN109286696A (zh) * | 2017-07-20 | 2019-01-29 | 东莞市钜欣电子有限公司 | 一种让手机logo发光的导光膜 |
TW202036954A (zh) * | 2018-12-28 | 2020-10-01 | 日商半導體能源研究所股份有限公司 | 發光裝置、照明裝置、顯示裝置、模組及電子機器 |
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JP2001519585A (ja) * | 1997-10-07 | 2001-10-23 | エリクソン インコーポレイテッド | 選択的にプログラム可能な外部表面を有する通信モジュール |
JP2005057330A (ja) * | 2003-08-04 | 2005-03-03 | Fuji Photo Film Co Ltd | 撮影装置 |
JP2005252871A (ja) * | 2004-03-05 | 2005-09-15 | Tokyo Bay Service:Kk | 携帯電話機用発光装置 |
JP2007311044A (ja) * | 2006-05-16 | 2007-11-29 | Mitsubishi Electric Corp | 発光装置及び照光方法 |
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JP2799966B2 (ja) * | 1995-03-16 | 1998-09-21 | セイコープレシジョン株式会社 | El発光装置 |
JP2003163083A (ja) * | 2001-09-13 | 2003-06-06 | Nissha Printing Co Ltd | El発光加飾成形品とその製造方法、el発光加飾シート |
JP2007094165A (ja) * | 2005-09-29 | 2007-04-12 | Tohoku Pioneer Corp | 表示装置 |
KR100739332B1 (ko) * | 2005-11-23 | 2007-07-12 | 삼성에스디아이 주식회사 | 윈도우 조립체가 구비된 표시소자 및 이를 포함하는 휴대용단말기 |
TWM325578U (en) * | 2007-07-20 | 2008-01-11 | Tennrich Int Corp | Light-emitting structure of a decoration plate and the electronic equipment it applied |
JP2010097070A (ja) * | 2008-10-17 | 2010-04-30 | Nitto Denko Corp | フラットパネルディスプレイ用透明粘着シート及びフラットパネルディスプレイ |
US9466806B2 (en) * | 2009-06-05 | 2016-10-11 | Oledworks Gmbh | Electroluminescent device |
US8860581B2 (en) * | 2010-01-19 | 2014-10-14 | T-Mobile Usa, Inc. | Element mapping to control illumination of a device shell |
TWI433587B (zh) * | 2010-04-29 | 2014-04-01 | Compal Electronics Inc | 顯示器、框架及框架的製造方法 |
KR20110125518A (ko) * | 2010-05-13 | 2011-11-21 | 삼성전자주식회사 | 백라이트 어셈블리 및 이를 갖는 표시장치 |
US9066072B2 (en) * | 2010-07-20 | 2015-06-23 | Semiconductor Components Industries, Llc | Systems and methods for calibrating image sensors |
WO2013031509A1 (en) * | 2011-08-26 | 2013-03-07 | Semiconductor Energy Laboratory Co., Ltd. | Light-emitting device, electronic device, lighting device, and method for manufacturing the light-emitting device |
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2013
- 2013-07-31 JP JP2014531564A patent/JPWO2014030509A1/ja active Pending
- 2013-07-31 WO PCT/JP2013/070688 patent/WO2014030509A1/ja active Application Filing
- 2013-07-31 US US14/420,263 patent/US20150228698A1/en not_active Abandoned
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JP2001519585A (ja) * | 1997-10-07 | 2001-10-23 | エリクソン インコーポレイテッド | 選択的にプログラム可能な外部表面を有する通信モジュール |
JP2005057330A (ja) * | 2003-08-04 | 2005-03-03 | Fuji Photo Film Co Ltd | 撮影装置 |
JP2005252871A (ja) * | 2004-03-05 | 2005-09-15 | Tokyo Bay Service:Kk | 携帯電話機用発光装置 |
JP2007311044A (ja) * | 2006-05-16 | 2007-11-29 | Mitsubishi Electric Corp | 発光装置及び照光方法 |
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US20150228698A1 (en) | 2015-08-13 |
JPWO2014030509A1 (ja) | 2016-07-28 |
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