JP2007011098A - Radio power supply system display device - Google Patents

Radio power supply system display device Download PDF

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JP2007011098A
JP2007011098A JP2005193330A JP2005193330A JP2007011098A JP 2007011098 A JP2007011098 A JP 2007011098A JP 2005193330 A JP2005193330 A JP 2005193330A JP 2005193330 A JP2005193330 A JP 2005193330A JP 2007011098 A JP2007011098 A JP 2007011098A
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power
display device
antenna
receiver
electroluminescence element
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Morio Taniguchi
彬雄 谷口
Masamitsu Akizuki
正光 秋月
Tetsuo Ogawa
哲郎 小川
Yu Ichikawa
結 市川
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KANSEI DEVICES KK
Shinshu University NUC
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KANSEI DEVICES KK
Shinshu University NUC
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a light emitting display device of an extremely simple configuration capable of causing light emitting display without mounting a power source by noticing the fact that organic electroluminescence emits light even on a low voltage and is extremely good in energy efficiency. <P>SOLUTION: The radio power supply system display device has a power transmitter 200 which is equipped with an oscillator 17 of at least a carrier high frequency and a power source 19 for driving the same, an antenna 1 for receiving the carrier RF transmitted by the power transmitter 200, and a receiver 100 which is equipped with an antenna 1 for receiving the carrier RF transmitted by the power transmitter 200 and a detector circuit 3 connected with the antenna 1. The electroluminescence 7 is connected to the output of the receiver 100. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、電力を無線により送信し、これを受信して、エレクトロルミネッセンス素子を発光表示させる装置に関するものである。   The present invention relates to a device that transmits electric power wirelessly, receives the electric power, and causes an electroluminescence element to emit light.

２１世紀になってユビキタスネットワークシステムが急速に拡がってきている。   In the 21st century, ubiquitous network systems have been rapidly expanding.

駅構内での無線ＬＡＮ接続、携帯電話による種々のサービスの拡大など、これらの無線での情報伝達は益々拡がっている。情報伝達の末端、すなわち人に対する伝達は、音声、画像で実行される。しかしながら、音声の再現や、画像の表示には少なからず電力を必要としている。テレビ放送の受像器やパソコンのモニタ画面の表示では、現在の主流である陰極線管、液晶ディスプレイ、プラズマディスプレイは、発光のエネルギーの源泉を商用電源か、二次電池から得ている。 These wireless information transmissions are becoming increasingly widespread, such as wireless LAN connections within stations and expansion of various services using mobile phones. The end of information transmission, that is, transmission to a person is performed by voice and image. However, a considerable amount of power is required for sound reproduction and image display. In the display of television broadcast receivers and personal computer monitor screens, cathode ray tubes, liquid crystal displays, and plasma displays, which are currently mainstream, use a commercial power source or a secondary battery as a source of light emission energy.

一方、電力の無線供給については、大電力、長距離では殆ど実現されておらず、鉄道の改札や、入退室管理、電子マネー等のＩＣカードシステム、データキャリアシステムなど、極めて近距離、小電力の信号通信で実用化されているに過ぎない。かかるデータキャリアシステムに相当するデータ通信装置が、例えば特許文献１に開示されており、このデータ通信装置の第１ユニットは電源電力を搭載しているが、第２ユニット（ＩＤユニット）は第１ユニットとの無線通信により信号電力を得るパッシブなもので、アクティブな電源はない。   On the other hand, wireless power supply is rarely realized at high power and long distances, such as railway ticket gates, entrance / exit management, IC card systems such as electronic money, data carrier systems, etc. It is only put to practical use in signal communication. A data communication apparatus corresponding to such a data carrier system is disclosed in, for example, Patent Document 1, and a first unit of the data communication apparatus is equipped with power supply power, but a second unit (ID unit) is a first unit. It is a passive device that obtains signal power by wireless communication with the unit, and there is no active power supply.

特許文献２には、エレクトロルミネッセンス（ＥＬ）ディスプレイに信号を無線で送る画像表示が示されているが、ＥＬディスプレイを回転させて視覚誤認により立体画像を得るもので、回転のための動力源電力を必要とする。   Patent Document 2 discloses an image display that wirelessly sends a signal to an electroluminescence (EL) display. However, the EL display is rotated to obtain a stereoscopic image by visual misrecognition. Need.

特開平１−１５１８３２号公報Japanese Patent Laid-Open No. 1-151832. 特開平２００５−３９５８１号公報JP-A-2005-39581

本願発明は、有機エレクトロルミネッセンス素子が低電圧でも発光し、極めてエネルギー効率がよいことに着目し、電源を搭載することなく極めて簡単な構成の発光表示装置を提供することを目的とするものである。   The present invention focuses on the fact that an organic electroluminescence element emits light even at a low voltage and is extremely energy efficient, and an object of the present invention is to provide a light-emitting display device having a very simple configuration without mounting a power source. .

前記の目的を達成するためになされた、特許請求の範囲の請求項１に記載された電力無線供給式表示装置は、少なくとも搬送高周波の発振器と、これを駆動する電源とを備えた電力送信機、および該電力送信機が送信した搬送波を受信するアンテナと、該アンテナに繋がる検波回路と備えた受信機を有し、該受信機の出力に、エレクトロルミネッセンス素子が接続されていることを特徴とする。   In order to achieve the above object, a wireless power supply type display device according to claim 1 is a power transmitter including at least a carrier high frequency oscillator and a power source for driving the oscillator. And a receiver including an antenna for receiving a carrier wave transmitted by the power transmitter, and a detection circuit connected to the antenna, and an electroluminescence element is connected to an output of the receiver. To do.

この電力無線供給式表示装置は、電力送信機側には電源を備えているが、受信機側には電源を備えることなく、無線通信によって電力供給を受けてエレクトロルミネッセンス素子が発光する。電力送信機側の電源は、商用電源を由来とするもの、あるいは二次電池のいずれであってもよい。   In this power wireless supply type display device, a power source is provided on the power transmitter side, but a power source is not provided on the receiver side, and the electroluminescent element emits light by receiving power supply by wireless communication. The power source on the power transmitter side may be either a power source derived from a commercial power source or a secondary battery.

同じく請求項２に記載された電力無線供給式表示装置は、請求項１に記載された電力無線供給式表示装置であって、データ信号を前記搬送高周波で変調する変調器が該電力送信機に備えられ、データ信号変調波を送受し、該データ信号が該エレクトロルミネッセンス素子に表示されることを特徴とする。   Similarly, the wireless power supply display device according to claim 2 is the wireless power supply display device according to claim 1, wherein a modulator for modulating a data signal with the carrier high frequency is provided in the power transmitter. And a data signal modulated wave is transmitted and received, and the data signal is displayed on the electroluminescence element.

請求項２の電力無線供給式表示装置は、データ信号変調波を電力送信機から送信し、受信機で受信するので、データ信号に対応した電圧が検波出力として得られエレクトロルミネッセンス素子に印加されるから、エレクトロルミネッセンス素子はデータ信号に対応した発光表示がなされる。このときエレクトロルミネッセンス素子は、検波出力の電圧に対応した発光強度を示し、単にオンオフの点滅発光をするだけではないので、様々なディスプレイ用途に使用できる。   The power wireless supply type display device according to claim 2 transmits the data signal modulated wave from the power transmitter and receives it by the receiver, so that a voltage corresponding to the data signal is obtained as a detection output and applied to the electroluminescence element. Therefore, the electroluminescence element performs light emission display corresponding to the data signal. At this time, the electroluminescence element exhibits a light emission intensity corresponding to the voltage of the detection output and does not merely emit on / off flashing light, and thus can be used for various display applications.

変調の方式は、振幅変調、周波数変調、位相変調、負荷変調など、いずれの変調方式も使用できるが、受信機側の復調回路である交直変換回路が低電力で動作するものであることが必要である。   Any modulation method such as amplitude modulation, frequency modulation, phase modulation, and load modulation can be used as the modulation method, but the AC / DC converter circuit, which is the demodulator circuit on the receiver side, must operate at low power. It is.

請求項３に記載された電力無線供給式表示装置は、請求項１または２に記載された電力無線供給式表示装置であって、該エレクトロルミネッセンス素子が有機エレクトロルミネッセンス素子であることを特徴とする。   A power wireless supply type display device according to claim 3 is the power wireless supply type display device according to claim 1 or 2, wherein the electroluminescence element is an organic electroluminescence element. .

エレクトロルミネッセンス素子の発光材料が有機物であることで、構造的にも簡易で、極めて薄くでき長寿命化が図れ、様々な発光色を設計できる上に安価である。有機物発光材料のなかでもアルミキノリール錯体、Ａｌｑ3（トリス（８−ヒドロキシキノリナト）アルミニウム）に代表される金属錯体、ポリフェニレンビニレン（ＰＰＶ）誘導体、ポリフルオレン誘導体などが特に好ましい。   Since the light-emitting material of the electroluminescence element is an organic material, it is structurally simple, extremely thin, can have a long life, can be designed with various emission colors, and is inexpensive. Among organic light emitting materials, an aluminum quinolyl complex, a metal complex represented by Alq3 (tris (8-hydroxyquinolinato) aluminum), a polyphenylene vinylene (PPV) derivative, a polyfluorene derivative, and the like are particularly preferable.

有機エレクトロルミネッセンス発光体は低消費電力であり、本発明の電力無線供給式表示装置のように無線により電源供給を受けても十分に発光するものである。また電源供給のための高周波を、データ信号で変調すれば、データ信号に対応した発光表示がなされる。   The organic electroluminescent illuminant has low power consumption, and emits light sufficiently even when it is supplied with power wirelessly like the power wireless supply type display device of the present invention. Further, if the high frequency for power supply is modulated by a data signal, light emission display corresponding to the data signal is performed.

したがって、本発明の電力無線供給式表示装置のエレクトロルミネッセンス素子を備えた受信機を、電源の得られ難い場所に設置し、人が携帯した電力送信機で情報および電力の供給を行うことで、情報の表示が可能となる。また、逆にエレクトロルミネッセンス素子を備えた受信機を携帯式の表示装置として、特定個所に設置された電力送信機で情報および電力の供給を行うことで、受信機の携帯者に可視情報を与えることができる。情報の伝達のみならず、一般広告、宣伝、指示、連絡等に使用が可能である。   Therefore, by installing the receiver equipped with the electroluminescence element of the power wireless supply type display device of the present invention in a place where it is difficult to obtain a power source, by supplying information and power with a power transmitter carried by a person, Information can be displayed. Conversely, a receiver equipped with an electroluminescence element is used as a portable display device, and information and power are supplied by a power transmitter installed at a specific location, thereby giving visible information to the receiver of the receiver. be able to. It can be used not only for the transmission of information but also for general advertising, promotion, instruction, communication, etc.

発明を実施するための好ましい形態Preferred form for carrying out the invention

本発明の電力無線供給式表示装置の好ましい実施の形態を、以下に図面を参照しながら説明する。   A preferred embodiment of a wireless power supply type display device of the present invention will be described below with reference to the drawings.

図１は本発明を適用する電力無線供給式表示装置の全体構成を示すブロック回路図を示すものである。同図に示すとおり、この電力無線供給式表示装置は、受信機１００と、電力送信機２００とを備えている。   FIG. 1 is a block circuit diagram showing the overall configuration of a wireless power supply type display device to which the present invention is applied. As shown in the figure, this wireless power supply type display device includes a receiver 100 and a power transmitter 200.

電力送信機２００には、高周波の発振器１７、データ信号を高周波変調する変調器１５、電力増幅器１３、および出力アンテナ１０を備えている。電力送信機２００は、バッテリ１９を備えており、このバッテリ電力により駆動する。   The power transmitter 200 includes a high-frequency oscillator 17, a modulator 15 that performs high-frequency modulation on a data signal, a power amplifier 13, and an output antenna 10. The power transmitter 200 includes a battery 19 and is driven by this battery power.

受信機１００は、受信アンテナコイル１とコンデンサ２からなる受信回路に、検波ダイオード３とコンデンサ４からなる検波回路が接続され、有機エレクトロルミネッセンス素子７が配置されている。有機エレクトロルミネッセンス素子７の一面には金属薄膜電極５が形成され、その裏面にはパターン形成された導電性ガラス電極６が形成され、検波回路に接続されている。   In the receiver 100, a detection circuit including a detection diode 3 and a capacitor 4 is connected to a reception circuit including a reception antenna coil 1 and a capacitor 2, and an organic electroluminescence element 7 is disposed. A metal thin film electrode 5 is formed on one surface of the organic electroluminescence element 7, and a patterned conductive glass electrode 6 is formed on the back surface of the metal thin film electrode 5, and is connected to a detection circuit.

図２には受信機１００の実体図が示されている。受信アンテナコイル１は、回路基板上に鍍金されている銅をエッジングして形成してある。有機エレクトロルミネッセンス素子７はセブンセグメント（７Segments）で０〜９の数字、４桁を表示するもので、図示の例では１、２、３、４を表示している。７１は有機エレクトロルミネッセンス素子の発光表示部、７０は有機エレクトロルミネッセンス素子の非発光部である。 FIG. 2 shows a substantial diagram of the receiver 100. The receiving antenna coil 1 is formed by edging copper plated on a circuit board. The organic electroluminescence element 7 displays the numbers 0-9 and 4 digits in 7 segments (7 Segments). In the example shown, 1, 2, 3, 4 are displayed. 7 1 is the light display unit of the organic electroluminescent device, 7 0 is a non-light emitting portion of the organic electroluminescence element.

以下、図１に示した電力無線供給式表示装置の動作を、周波数変調方式が振幅変調である場合について図３に示す動作波形図を参照しながら説明する。   The operation of the wireless power supply type display device shown in FIG. 1 will be described below with reference to the operation waveform diagram shown in FIG. 3 when the frequency modulation method is amplitude modulation.

図３（Ａ）に示すのデータ信号が変調器１５に入力し、発振器１７から波形（Ｂ）の高周波が発振して変調器１５に入力する。データ信号（Ａ）は変調器１５にて高周波（Ｂ）による振幅変調をされる。これが電力増幅器１３で増幅され、変調搬送波ＲＦ（Ratio Frequency）として出力アンテナ１０から発振される。   A data signal shown in FIG. 3A is input to the modulator 15, and a high frequency waveform (B) is oscillated from the oscillator 17 and input to the modulator 15. The data signal (A) is amplitude-modulated by the modulator 15 with a high frequency (B). This is amplified by the power amplifier 13 and oscillated from the output antenna 10 as a modulated carrier wave RF (Ratio Frequency).

出力アンテナ１０を発振した変調搬送波ＲＦ、受信機１００の受信アンテナコイル１が受信してコンデンサ２と共振し、検波回路に入力する。検波ダイオード３で半波整流検波を受けて検波出力（Ｄ）の脈流を生ずる。この検波出力（Ｄ）はコンデンサ４で平滑化され、直流データ信号（Ｅ）が再現される。この直流データ信号の電流が金属薄膜電極５、および導電性ガラス電極６を通じて有機エレクトロルミネッセンス素子７を流れて、発光タイミング（Ｆ）で有機エレクトロルミネッセンス素子７が発光する。   The modulated carrier wave RF oscillated from the output antenna 10 is received by the receiving antenna coil 1 of the receiver 100, resonates with the capacitor 2, and is input to the detection circuit. The detection diode 3 receives half-wave rectification detection and generates a pulsating flow of detection output (D). This detection output (D) is smoothed by the capacitor 4 to reproduce the DC data signal (E). The current of the DC data signal flows through the organic electroluminescence element 7 through the metal thin film electrode 5 and the conductive glass electrode 6, and the organic electroluminescence element 7 emits light at the light emission timing (F).

本発明の電力無線供給式表示装置を以下の実施例とおりに試みた。   The power wireless supply type display device of the present invention was tried as in the following examples.

受信機１００は、図１、２に示す構成であり、詳細は以下のとおりである。受信アンテナコイル１は、ガラス強化エポキシ基板上に銅箔（厚み35μm）にて、Ａタイプ（線幅１ｍｍ、線の全長３７５ｍｍ＝マイクロウエーブ４００ＭＨｚの半波長、アンテナ長３４ｍｍ、アンテナ幅２７ｍｍ）と、Ｂタイプ（線幅０.３ｍｍ、線長１９ｍｍ、アンテナ幅１３ｍｍ）の二種類を試作した。検波ダイオードはショットキーバリアダイオード（schottky barrier diode）ものを使用した。表示部は、日置電気株式会社製の有機エレクトロルミネッセンスパネルを使用した。   The receiver 100 has the configuration shown in FIGS. 1 and 2 and details are as follows. The receiving antenna coil 1 is made of copper foil (thickness 35 μm) on a glass-reinforced epoxy substrate, and is of A type (line width 1 mm, total length 375 mm = half wavelength of microwave 400 MHz, antenna length 34 mm, antenna width 27 mm), Two types of B type (line width: 0.3 mm, line length: 19 mm, antenna width: 13 mm) were prototyped. The detector diode used was a Schottky barrier diode. The display unit used was an organic electroluminescence panel manufactured by Hioki Electric Co., Ltd.

電力送信機２００としてアマチュア無線用トランシーバを用いた。このトランシーバは４００ＭＨｚ帯で１Ｗの出力を得られる。アンテナ（出力アンテナ１０）は、発振側内臓のホイップアンテナである。   An amateur radio transceiver is used as the power transmitter 200. This transceiver can output 1 W in the 400 MHz band. The antenna (output antenna 10) is a whip antenna with a built-in oscillation side.

以上の装置構成で受信機１００の有機エレクトロルミネッセンス素子に電圧供給を行った。その結果、有機エレクトロルミネッセンス素子に供給された電圧は受信用アンテナの形状、発信器との距離、相対的な位置によって大きく変わるが、概ね、５〜１０Ｖ程度の電圧で供給できることが分かった。   Voltage was supplied to the organic electroluminescence element of the receiver 100 with the above apparatus configuration. As a result, it was found that the voltage supplied to the organic electroluminescence element largely varies depending on the shape of the receiving antenna, the distance to the transmitter, and the relative position, but can be supplied at a voltage of about 5 to 10V.

有機エレクトロルミネッセンス素子の発光強度は、通常のテレビ画面の明るさ（200〜300cd/m2）以上の発光強度概ね800cd/m2（Ａタイプアンテナコイル）程度が実現できた。Ｂタイプアンテナコイルでは450cd/m2であった。 The emission intensity of the organic electroluminescence element was approximately 800 cd / m 2 (A type antenna coil), which is higher than the brightness of a normal television screen (200 to 300 cd / m 2 ). It was 450 cd / m 2 for the B type antenna coil.

本発明を適用する電力無線供給式表示装置の一実施例の全体構成を示すブロック回路図である。1 is a block circuit diagram showing an overall configuration of an embodiment of a power wireless supply type display device to which the present invention is applied.

本発明を適用する電力無線供給式表示装置の受信機の一実施例の実体図である。1 is a substantial diagram of an embodiment of a receiver of a wireless power supply type display device to which the present invention is applied.

本発明を適用する電力無線供給式表示装置の動作波形図である。It is an operation | movement waveform diagram of the electric power wireless supply type display apparatus to which this invention is applied.

符号の説明Explanation of symbols

１は受信アンテナコイル、２はコンデンサ、３は検波ダイオード、４はコンデンサ、５は金属薄膜電極、６は導電性ガラス電極、７は有機エレクトロルミネッセンス素子、１０は出力アンテナ、１３は電力増幅器、１５は変調器、１７は発振器、１００は受信機、２００は電力送信機、ＲＦは変調搬送波である。   1 is a receiving antenna coil, 2 is a capacitor, 3 is a detector diode, 4 is a capacitor, 5 is a metal thin film electrode, 6 is a conductive glass electrode, 7 is an organic electroluminescence element, 10 is an output antenna, 13 is a power amplifier, 15 Is a modulator, 17 is an oscillator, 100 is a receiver, 200 is a power transmitter, and RF is a modulated carrier wave.

Claims (3)

少なくとも搬送高周波の発振器と、これを駆動する電源とを備えた電力送信機、および該電力送信機が送信した搬送波を受信するアンテナと、該アンテナに繋がる交直変換回路と備えた受信機を有し、該受信機の出力に、エレクトロルミネッセンス素子が接続されていることを特徴とする電力無線供給式表示装置。   A power transmitter including at least a carrier high-frequency oscillator and a power source for driving the same; an antenna that receives a carrier wave transmitted by the power transmitter; and a receiver including an AC / DC converter circuit connected to the antenna An electric luminescence element is connected to the output of the receiver. データ信号を前記搬送高周波で変調する変調器が該電力送信機に備えられ、データ信号変調波を送受し、該データ信号が該エレクトロルミネッセンス素子に表示されることを特徴とする請求項１に記載の電力無線供給式表示装置。   The modulator for modulating a data signal at the carrier high frequency is provided in the power transmitter, transmits and receives a data signal modulated wave, and the data signal is displayed on the electroluminescence element. Power wireless display system. 該エレクトロルミネッセンス素子が有機エレクトロルミネッセンス素子であることを特徴とする請求項１または２に記載の電力無線供給式表示装置。   The power wireless supply type display device according to claim 1 or 2, wherein the electroluminescence element is an organic electroluminescence element.
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