JP2007228446A - Portable information device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thin, lightweight portable information device capable of supplying ample voltage to a means for indicating an incoming call or an active call. <P>SOLUTION: This device comprises an independent antenna conductor, constituting a flat antenna PNT for tuning radio waves in a specific high-frequency band and a first wave detector for supplying voltages to a means connected to the flat antenna PNT, to indicate an incoming call or an active call on either of a first insulating substrate SUB of an organic EL display panel and a sealing can CAP or in a part of the inner or the outer surfaces of the insulating substrate and sealing can. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a portable information device, and is particularly suitable for a mobile phone equipped with an organic EL panel in which a plurality of organic EL elements are stacked on an insulating substrate.

  Liquid crystal display devices (LCDs), plasma display devices (PDPs), field emission display devices (FEDs), organic EL display devices (OLEDs), etc. are in the practical application or practical application research stage as flat panel display devices. Among them, the organic EL display device is thin and lightweight and is driven by a direct current low voltage current, and is a very promising display device as a typical future display device as a typical self-luminous display device.

  Organic EL display devices include a so-called bottom emission type that emits display light to the substrate side and a so-called top emission type that emits display light to the side opposite to the substrate. A bottom emission type organic EL display device has a transparent electrode (such as ITO) as a first electrode or one electrode on a transparent insulating substrate (first substrate) preferably made of a glass substrate, and an electric field applied. An organic EL element is constituted by a light emitting mechanism in which a light emitting organic multilayer film (also referred to as an organic light emitting layer) and a reflective metal electrode as the second electrode or the other electrode are sequentially laminated.

  A large number of organic EL elements are arranged in a matrix, and the laminated structure is covered with another substrate (second substrate) called a sealing can or a sealing coating so that the light emitting structure is shielded from the external atmosphere. It is an organic EL panel. Then, for example, by applying an electric field between the transparent electrode as the anode and the metal electrode as the cathode, carriers (electrons and holes) are injected into the organic multilayer film, and the organic multilayer film emits light. This light emission is emitted from the glass substrate side to the outside.

  On the other hand, in the top emission type organic EL display device, the above-mentioned one electrode is a reflective metal electrode, the other electrode is a transparent electrode such as ITO, and an electric field is applied between the two to form an organic multilayer film. Emits light, and the emitted light is emitted from the other electrode side. In the top emission type, a transparent plate suitable for a glass plate is used as a member corresponding to the sealing can in the bottom emission type.

  Since such an organic EL display device is self-luminous, it is suitable for a display unit of a mobile phone or PDA that is required to be lightweight and thin. A portable information device having such a communication function is equipped with an antenna for remote communication. There are some which are provided with an incoming / operating display means for visually displaying an incoming call or a communication state. A light emitting diode is often used as the incoming / in-operation display means, and a battery of the apparatus main body is usually used as a lighting power source.

In Patent Document 1, a liquid crystal panel is mounted on a non-contact IC card and a loop antenna is provided to detect an electromagnetic wave having a specific frequency that resonates with the loop antenna and receive data using this as operating power. Is disclosed.
JP 2004-363561 A

  In the case where the power of the incoming / operating display means is supplied from the battery of the main body, the consumption of the battery is accelerated. In addition, the loop antenna has strong directivity, and sufficient power may not be obtained depending on the attitude of the device.

  The object of the present invention is to provide a lightweight and thin portable device that can supply sufficient power to the incoming / incoming display means without supplying the power of the incoming / incoming display means from the battery of the main body, and regardless of the attitude of the apparatus. It is to provide information equipment.

A typical configuration of the means of the present invention for achieving the above object is as follows. That is,
(1) A portable information device according to the present invention is formed of an insulating substrate and is provided on a display unit including an organic EL pixel group having a matrix arrangement that occupies most of a substantially central region thereof, and provided on the outer periphery of the display unit A first substrate on which a scanning circuit and a drive circuit unit for supplying a data signal for lighting / non-lighting driving are disposed on the pixels constituting the self-luminous pixel group; and the display unit covering the upper part of the display unit A portable information device including a display panel having a second substrate that cuts off the external atmosphere from the outside atmosphere, and an incoming / in-operation display means in the casing.

  An independent antenna conductor constituting a planar antenna that tunes to a specific external high frequency band radio wave on a part of the inner surface or the outer surface of either the first insulating substrate or the second substrate, or both, And a first detection circuit that is connected to an independent antenna conductor and supplies power to the incoming / operating display means.

  In addition, the present invention provides a communication antenna that controls transmission / reception of data to / from the housing, and a gate circuit that supplies the output of the first detection circuit to the incoming / operating display means based on the detection output of the communication antenna. It is provided with.

  Further, according to the present invention, the incoming / incoming display means is a light emitting diode, and the light emitting diode is attached to the communication antenna, or attached to the casing, or constitutes a part of the casing. It is characterized by.

  Further, according to the present invention, the incoming / in-operation display means is an organic EL element, and the organic EL element is attached to the communication antenna or attached to the casing. It is characterized by comprising.

  Note that the present invention is not limited to the above-described configuration and the configurations disclosed in the following embodiments, and various modifications can be made without departing from the technical idea of the present invention.

  According to the present invention, it is possible to provide a portable information device that achieves low power consumption, thickness reduction, and weight reduction with high added value.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings of the examples. Here, an organic EL display panel will be described as an example of the display device, but the same applies to other self-luminous display panels.

  FIG. 1 is a cross-sectional structural view of an organic EL display panel for explaining Example 1 of the present invention. In FIG. 1, on the main surface (inner surface) of a glass substrate SUB, which is a first substrate, a signal transmission wiring, a thin film transistor electrode, and a transparent electrode TED, which is a first electrode separated for each pixel, are provided. . There is a jetty BNK called a bank between the pixels, and an organic EL light emitting layer structure OLE having a multilayer structure is applied to the inner side surrounded by the jetty BNK by an appropriate method. The reflective electrode RED, which is the second electrode, is formed on the uppermost layer in common for all pixels. The main surface of the glass substrate SUB is sealed with a second substrate (sealing can) CAP. Note that a vacuum is applied between the glass substrate SUB and the sealing can CAP, or a desiccant (or a hygroscopic agent) is disposed.

  Similarly, a pixel selected by scanning by a scanning line drive circuit (not shown) emits light according to display data supplied from a data line drive circuit (not shown), and this light L is emitted from the glass substrate SUB.

  In Example 1 of the present invention, the conductor of the planar antenna PNT, which is an independent antenna, is formed on the substrate of the organic EL display panel. FIG. 1 shows a state in which the conductor of the planar antenna PNT is formed on the outer surface and the inner surface of the sealing can CAP and the outer surface and the inner surface of the glass substrate SUB. It is a thing. These installation locations are a matter of choice.

  FIG. 2 is a plan view for explaining an arrangement example of conductors of the planar antenna PNT formed on the glass substrate SUB in FIG. The conductor of the planar antenna PNT is formed on the outer periphery of the display area DAR.

  FIG. 3 is a plan view for explaining an arrangement example of conductors of the planar antenna PNT formed in the sealing can in FIG. In the bottom emission type organic EL display panel, since it is not necessary to avoid the display area DAR in the sealing can CAP, the conductor of the planar antenna PNT is formed in an arbitrary portion within the surface of the sealing can CAP.

  FIG. 4 is an explanatory diagram of a main circuit of the incoming / operating display means according to the first embodiment of the present invention. The high frequency current induced in the planar antenna PNT, which is an independent antenna, is detected by the independent detection circuit RTF-P and connected to the gate circuit SW. On the other hand, this portable information device is provided with a communication antenna ANT. The communication antenna ANT is connected to the transmission / reception circuit T / R to transmit / receive data.

  The communication antenna ANT is also connected to the communication side detection circuit RTF-A. The detection output of the communication side detection circuit RTF-A is connected to the gate circuit SW as a control signal. When there is an incoming call (incoming call) at the communication antenna ANT, a similar high-frequency current flows through the planar antenna PNT. The high frequency current that has arrived at the communication antenna ANT is supplied to the transmission / reception circuit T / R to reproduce the data. At this time, the high-frequency current that has arrived at the communication antenna ANT is detected by the communication-side detection circuit RTF-A, and the detection signal is applied to the gate circuit SW as a control signal to open the gate circuit. The detection current detected by the independent detection circuit RTF-P passes through the gate circuit SW and becomes a visual display output OUT to the incoming / in-operation display means.

  FIG. 5 is an explanatory diagram of a configuration example of the display unit of the incoming / operating display unit according to the first embodiment of the present invention. The display unit of FIG. 5 is a light emitting diode PD, and when the display output OUT of FIG. 4 is input to its input terminal IN, the light emitting diode PD emits light and displays an incoming call. The light emitting diode PD may be installed in the communication antenna portion of the main device or in the casing of the main device.

  FIG. 6 is an explanatory diagram of another configuration example of the display unit of the incoming / operating display unit according to the first embodiment of the present invention. The display unit in FIG. 6 is an organic EL element OLED. When the display output OUT in FIG. 4 is input to its input terminal IN, the organic EL element OLED emits light and displays an incoming call. The organic EL element OLED may be installed in the communication antenna portion of the main body device, or may be installed in the housing of the main body device, or a jacket provided on the housing may be an organic EL display device.

  Further, when a call is made (transmitted) from the portable information device, the high-frequency current output from the transmission / reception circuit T / R is radiated from the communication antenna ANT to the space. The radiated high-frequency current is received by the planar antenna PNT, and the detection current detected by the independent detection circuit RTF-P reaches the gate circuit SW. At the same time, a part of the high-frequency current output from the transmission / reception circuit T / R is detected by the communication-side detection circuit RTF-A, and the detection signal is applied to the gate circuit SW as a control signal, and this gate circuit SW is opened. This is the display output OUT to the incoming / operating display means. Thereafter, a visual display is made on the incoming / operating display means in the same manner as described above.

  FIG. 7 is an external view of a mobile phone which is a representative example of the portable information device of the present invention. This mobile phone is a foldable type. FIG. 7 (a) is a front view in an open state, and FIG. 7 (b) is a side view. This mobile phone includes a main body MB and a display DB connected to the main body MB by a hinge HNJ. The main body MB is provided with a keyboard KB for inputting characters / numbers / symbols, etc., an operation dial MP for function selection, and the like.

  The display unit DB has a display area DAR composed of an organic EL display panel on the front side, a communication antenna ANT is installed on the rear side, and patterning and conductors by a photolithography process on the back side of the sealing can of the display panel PNL. The planar antenna PNT is formed by printing or attaching a conductive foil.

  FIG. 8 is an explanatory diagram of another application example of the planar antenna according to the present invention. In this example, a planar antenna is formed on the front part including the screen of the television receiver. Of the planar antenna PNT, the antenna conductor provided in the display area DAR is a transparent conductive film such as ITO, and the antenna conductor provided in the cabinet CAB may be copper foil, copper wire, aluminum foil, aluminum wire, or the like. It is also conceivable that no antenna conductor is provided in the display area DAR. The planar antenna PNT is omnidirectional.

  FIG. 9 is a configuration diagram illustrating a reception gain improvement system using the planar antenna PNT shown in FIG. A normal television receiving antenna ANT is input to the mixing amplifier circuit MAX together with the planar antenna PNT. At this time, phase adjustment is performed so that the phases of both antennas are matched. The output of the mixing amplifier circuit MAX is given to the display device DIS through a predetermined process in the receiving circuit, and an image is reproduced in the display area.

1 is a cross-sectional structure diagram of an organic EL display panel for explaining Example 1 of the present invention. It is a top view explaining the example of arrangement | positioning of the conductor of the planar antenna formed in the glass substrate in FIG. It is a top view explaining the example of arrangement | positioning of the conductor of the planar antenna formed in the sealing can in FIG. It is explanatory drawing of the principal part circuit of the display means during an incoming / operation in Example 1 of this invention. It is explanatory drawing of the example of 1 structure of the display part of the display means during an incoming / operation in Example 1 of this invention. It is explanatory drawing of the other structural example of the display part of the display means during an incoming / operation in Example 1 of this invention. 1 is an external view of a mobile phone that is a representative example of a portable information device of the present invention. It is explanatory drawing of the other application example of the planar antenna by this invention. It is a block diagram explaining the reception gain improvement system using the planar antenna PNT shown in FIG.

Explanation of symbols

SUB ... first substrate (insulating substrate, glass substrate), TED ... transparent electrode as first electrode, BNK ... bank, OLE ... organic EL light emitting layer structure, RED ... reflecting electrode , CAP ... second substrate (sealing can).

Claims (10)

A display unit formed of an insulating substrate and made up of an organic EL pixel group having a matrix arrangement that occupies most of the central region of the display unit. A first substrate on which a driving circuit unit for supplying a scanning signal and a data signal for non-lighting driving is disposed, and a second substrate that covers the display unit from above and blocks the display unit from the external atmosphere A portable information device including a display panel having a display panel and an incoming / in-operation display means in the case,
An independent antenna conductor that is tuned to radio waves in a specific external high frequency band on a part of the inner surface or the outer surface of either the first insulating substrate or the first substrate, or connected to the independent antenna conductor, and A portable information device comprising a first detection circuit for supplying power to an incoming / in-operation display means. The portable information device according to claim 1,
A communication antenna for transmitting and receiving data to and from the housing, and a gate circuit for supplying the output of the first detection circuit to the incoming / in-operation display means based on the detection output of the communication antenna. A portable information device. In the portable information device according to claim 1 or 2,
The portable information device, wherein the incoming / in-operation display means is a light emitting diode. In the portable information device according to claim 3,
The portable information device, wherein the light emitting diode is attached to the communication antenna. In the portable information device according to claim 3,
The portable information device, wherein the light emitting diode is attached to the housing. In the portable information device according to claim 3,
The portable information device, wherein the light emitting diode constitutes a part of the housing. In the portable information device according to claim 1 or 2,
The mobile information device, wherein the incoming / in-operation display means is an organic EL element. In the portable information device according to claim 7,
The organic EL element is attached to the communication antenna, and is a portable information device. In the portable information device according to claim 7,
The organic EL element is attached to the casing, and is a portable information device. In the portable information device according to claim 7,
The organic EL element constitutes a part or all of the casing, and is a portable information device.

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