JP2005227697A - Mobile electronic equipment and its control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a configuration to enhance the display grade of a display body which is arranged on a cover and can make display on both sides in mobile electronic equipment which has display screens having sufficient brightness and contrast on both the front and rear sides of a casing and in which the thickness reduction of the casing is made possible or in the mobile electronic equipment which is constituted to make the main body and the cover openable and closable. <P>SOLUTION: The mobile electronic equipment 100 has the main body 110 and an opening/closing display element 120 which is constituted in an openable and closable manner with respect to the main body and is provided with the display screens 120A and 120B on both the inner and outer surfaces thereof, respectively and is equipped with the single display body of a spontaneous light emission type which is arranged in the opening/closing display part and is constituted to realize display together with the display screens 120A and 120B of both the inner and outer surfaces of the opening/closing display part and a display drive control part which controls driving of the single display body. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a portable electronic device and a control method thereof, and more particularly to a structure of an electronic device including a single display body capable of forming display screens on both front and back surfaces.

  In general, in a portable electronic device having a display screen, a thin display body called a flat panel display such as a liquid crystal display body is used in order to reduce the size and thickness. Such a display body is usually disposed inside the housing so as to have a display screen on the surface of the electronic device. However, in the portable electronic device, since the housing itself is small, the display area of the display body is restricted, so that display contents are limited, and display quality (display definition) is also reduced.

  As one method for solving the shortage of the display area, there is a method of providing display screens on the front and back sides of the housing. For example, in a folding mobile phone, a display screen is provided on each of the front and back sides of the folding housing. However, in this case, the liquid crystal display body for configuring the display screen on the inner surface of the housing and the liquid crystal display body for configuring the display screen on the outer surface are accommodated in the housing, respectively. There is a disadvantage that the casing becomes thick.

  As a method for solving the above-described drawbacks, as described in Patent Document 1 below, a liquid crystal display body is arranged on a lid body that is configured to be openable and closable with respect to the main body, and both sides of the liquid crystal display body are arranged. There is known a technique for forming a double-sided display by providing a display screen that can visually recognize a reflective display and a display screen that can visually recognize a transmissive display.

In the display device described in Patent Document 1, another display body is provided on the main body, and a display screen is formed on each of the inner surface of the main body and the inner surface of the lid. Further, Patent Document 1 also describes that a transmissive display of a liquid crystal display provided on the lid is realized by using display light emission of the display provided on the main body as a backlight.
JP-A-8-184821

  However, in the liquid crystal display body configured to be able to realize the reflective display and the transmissive display on the display screens formed on the front and back surfaces as described above, it is necessary to provide the display screens on the front and back surfaces. Since a backlight cannot be provided unlike a transmissive liquid crystal display device, there is a problem that the display becomes dark and the visibility is poor. In particular, since this liquid crystal display has a polarizing plate, the light use efficiency is poor, and thus it is inherently difficult to ensure sufficient display brightness.

  In addition to the situation where the brightness of the display is insufficient as described above, the above liquid crystal display body functions as a reflector when realizing a reflective display, and when realizing a transmissive display. Uses an optical filter that functions as a light transmission plate, and there is a problem that the contrast of display is further lowered due to light loss in the optical filter.

  Therefore, the present invention solves the above-mentioned problems, and the problem is that the display screen having sufficient brightness and contrast is provided on both the front and back sides of the casing, and the casing is thinned. It is to provide a portable electronic device that can be used. Another object is to provide a configuration that can improve the display quality of a display body that can be displayed on both sides in a portable electronic device in which the main body and the lid are configured to be openable and closable. There is.

  In view of such circumstances, the portable electronic device of the present invention is a portable electronic device that includes a main body and an open / close display unit that is configured to be openable and closable with respect to the main body and has display screens on both the inner and outer surfaces. A self-luminous single display body arranged in the open / close display section and configured to be able to display both on the display screens on both the inside and outside of the open / close display section, and a display for driving and controlling the single display body And a drive control unit.

  According to the present invention, the self-luminous single display body is arranged on the open / close display unit configured to be openable and closable with the main body, so that the display screen provided on each of the both inside and outside of the open / close display unit has sufficient brightness. And contrast can be provided. Further, since the self-luminous single display body is used, the open / close display portion can be easily reduced in thickness.

  Here, the self-luminous type refers to a type of display body in which the display pixels themselves emit light without separately using an illumination device such as a backlight or a front light. For example, as a self-luminous display, an inorganic electroluminescence display, an organic electroluminescence display, a plasma display, a device using an electron-emitting device (Field Emission Display, Surface-Conduction Electron-Emitter Display, etc.), etc. And various electro-optical devices. Moreover, a single display body means the display body which made the display structure visible to both front and back. Therefore, for example, it is only necessary that the mode of each display pixel is visible from both the front and back surfaces, and the display pixel may have a single-layer display structure or a multi-layer display structure. However, even if it has a multi-layer display structure, one of the two-layer display structures where one display structure is visible only from the front side and the other display structure is visible only from the back side is not included. Examples of such a single display body include inorganic electroluminescence display bodies and organic electroluminescence display bodies.

  More specifically, since the display body disposed in the open / close display unit of the present invention is a self-luminous type, a lighting device such as a backlight is unnecessary, and since it is a single display body, it is a display pixel. Therefore, the display body itself can be easily thinned, so that the open / close display portion can be thinned. On the other hand, since it is a self-luminous type, the brightness and contrast of the display can be secured, and since it is a single display body, it is possible to make the display pixels visible from both the front and back surfaces, so that visibility is improved. As a result, display quality can be improved. Therefore, there is an excellent effect that improvement in display quality and thinning of the housing can be realized at a high level at the same time.

  In the present invention, the display drive control unit includes an outer surface display drive mode for displaying on the display screen provided on the outer surface of the open / close display unit with respect to the single display body, and the open / close display unit. It is preferable that the inner surface display driving mode reversed from the outer surface display driving mode for displaying on the display screen provided on the inner surface can be realized. Normally, one of the display screens on both the inside and outside of the open / close display unit is visually recognized depending on the usage mode, but the display drive control unit realizes the outer surface display driving mode and the inverted inner surface display driving mode. Therefore, the display can be visually recognized in any display screen by appropriately switching the driving mode.

  In the present invention, the outer surface display driving mode is realized in a state in which the open / close display unit is arranged on the main body, and the inner surface display driving mode is in a state in which the open / close display unit is open with respect to the main body. It is preferable to be configured to be realized. According to this, since the drive mode of the display drive control unit is switched in conjunction with the open / close state of the open / close display unit, it can be used without requiring a drive mode switching operation. As this configuration, for example, an open / close detector that detects the open / closed state of the open / close display unit, and a drive mode that switches between the above-described external display drive mode and internal display drive mode according to the open / closed state detected by this open / close detector The structure which provides a switching means is mentioned.

  In the present invention, the single display body is preferably a transparent display body. The transparent display body refers to a display body that can realize a transparent state that can be substantially seen through depending on its driving mode. According to this, since light can be efficiently emitted to both the front and back sides, the brightness and contrast of the display can be further increased, and a single display can be performed even when the open / close display unit is arranged overlapping the main body. The inner surface of the main body can be seen through the body. In particular, when a display screen with another display body is configured on the inner surface of the main body, the display screen can be visually recognized, and the content displayed on the display screen and the display of the single display body It is also possible to visually recognize the contents displayed on the screen in an overlapping manner.

  In the present invention, the single display body is preferably an organic electroluminescence display body. The organic electroluminescence display is a self-luminous display and has an advantage that it can be easily made into a transparent panel structure and the panel structure can be easily reduced in thickness.

  In the present invention, the single display body is preferably a dot matrix type display body. Since the dot matrix type display body realizes a desired display mode by independently controlling the display mode of each dot (display pixel), the degree of freedom of the display mode is large and the display content is restricted. This is advantageous in that it is not. As such a dot matrix type display body, a passive matrix type display body having electrodes intersecting with each other, an active element such as a TFT (thin film transistor) or a TFD (thin film diode) is provided for each dot, and the active element is interposed therebetween. An active matrix type display body that supplies an electric field to the display electrodes can be given.

  In the present invention, the display drive control unit outputs a horizontal drive signal to a plurality of horizontal lines connected to each dot, and a vertical line to a plurality of vertical lines connected to each dot. A vertical line driving unit that outputs a driving signal, and a driving mode switching that switches between the outer surface display driving mode and the inner surface display driving mode by inverting the signal output mode for each line of the horizontal line driving unit or the vertical line driving unit. And means. According to this, by inverting the signal output mode (for example, the application order of signals or the signal arrangement applied) of the horizontal line driving unit or the vertical line driving unit, the outer surface display driving mode and the inner surface display driving mode Can be easily switched.

  In this invention, it is preferable that the main body side display body which has a display screen is arrange | positioned in the said main body at the side which touches the said opening / closing display body. According to this, when the open / close display body is opened, the display can be visually recognized also by the display screen on the inner surface of the main body. In addition, when the single display body is a transparent display body, when the open / close display section is closed (overlaid on the main body), the transparent display body is made transparent so that the main body side is opened via the open / close display section. It is also possible to see through the display screen of the display body or to visually recognize the display screen of the main body side display body and the display screen of the transparent display body.

  In the present invention, when the single display body is a transparent display body, the display drive control unit includes the main body side display body and the transparent display body in a state in which the open / close display section is disposed on the main body. It is preferable that an overlapping display driving mode in which a part of the display screen of the main body side display body is visible through the transparent display body can be realized. According to this, since a predetermined display mode can be realized in a state where the display screen of the main body side display body and the display screen of the transparent display body are overlapped, a sense of depth of display contents can be obtained and complicated A display mode can also be realized.

  In the present invention, it is preferable to have a mounting band connected to the main body. A wristband, wrist, arm, torso, etc. can be worn with a wristband. In particular, a wristwatch-type wearing band that can be worn on the wrist or arm is desirable.

  In the present invention, a function operation unit having a predetermined operation function, a state detection unit that detects an operation state of the function operation unit, and a display mode of the single display body are switched according to a detection result of the state detection unit It is preferable to further include display mode switching means. According to this, the operation state of the functional operation unit can be detected, and the display mode of the single display body can be switched according to this operation state. Here, the functional operation unit is an external communication device having a communication function with the outside, and when the operation mode is a reception operation or a power generation device having a power generation function, the operation mode is a power generation operation. There are some cases. In addition, as a display mode switching mode, there are a standby mode in which non-display or display luminance is reduced to reduce display power, and a normal mode (a normal lighting state, a display mode having normal luminance). For example, switching, switching between a normal mode (for example, a time display mode) and a communication mode for displaying a communication state can be given.

  The method for controlling a portable electronic device according to the present invention includes a main body, and a display for the portable electronic device that is configured to be openable and closable with respect to the main body, and has an open / close display unit having display screens on both the inside and outside thereof. In the control method, a self-luminous single display body arranged on the open / close display unit and configured to be able to display both on the display screens on both the inside and outside of the open / close display unit is controlled. According to the open / closed state with respect to the main body, a back side mode in which display is performed on the display screen on the inner surface of the open / close display body by the single display body, and the outer surface of the open / close display body by the single display body. The display screen is switched to a front side mode constituting a display. As a result, a display having sufficient brightness and contrast can be configured on each of the display screens on the inner and outer surfaces of the thinly configured open / close display unit, and the display mode is automatically set according to the open / closed state of the open / close display unit. Therefore, the display screens on both the inside and outside can be used without being aware of the switching operation.

  Furthermore, another portable electronic device control method of the present invention is configured to be configured to be openable and closable so as to cover the main body having a display screen and the display screen of the main body, and the display screen is provided on each of the inner and outer surfaces. In a display control method of a portable electronic device having an open / close display unit, a main body-side display body arranged in the main body and configured to be able to realize display on the display screen of the main body, and the open / close display unit And a self-luminous transparent display configured to be able to display both on the display screens on both the inside and outside of the open / close display unit, and the open / close display unit covers the display screen of the main body. And controlling the main body side display body to form a display on the display screen of the main body, making at least a part of the transparent display body transparent, and passing the transparent display body through the display of the main body The screen is visible And wherein the configuring to so that. According to this, the display screen of the main body can be visually recognized even when the open / close display unit is closed on the main body, and is displayed on both the display screen of the main body and the display screen outside the open / close display body. It is also possible to make it possible to visually recognize the display mode synthesized by superimposing both screens.

  According to the present invention, it is possible to achieve an excellent effect that it is possible to simultaneously ensure display quality and reduce the thickness in an open / close display unit having display screens on both sides.

[First Embodiment]
Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic perspective view showing an appearance of a portable electronic device 100 according to the first embodiment of the present invention. A portable electronic device 100 having a wristwatch function includes a main body 110 and an open / close display unit 120 configured to be openable and closable with respect to the main body 110. The main body 110 and the open / close display unit 120 are rotatably connected by a hinge unit 130. Here, FIG. 1A shows a state where the open / close display unit 120 is opened (hereinafter simply referred to as “open state”), and FIG. 1B shows a state where the open / close display unit 120 is closed and folded. The state where the open / close display unit 120 is arranged so as to overlap the main body 110 (hereinafter simply referred to as “closed state”) is shown.

  In the main body 110, a display screen 110A is formed on the inner surface facing the open / close display unit 120 in a closed state. In addition, an external operation unit 110 </ b> S configured by a push button or the like is provided on the side surface of the main body 110. An external operation unit 110S ′ indicated by a dotted line in the figure may be provided on the inner surface of the main body 110. A wearing band 140 is connected to both ends of the main body 110. The wearing band 140 is similar to a band used for a normal wristwatch or the like, and is composed of a connecting body formed by connecting metal pieces, leather, artificial leather, plastic, or the like.

  On the other hand, the open / close display unit 120 includes a display screen 120A configured on the outer surface which is the surface in the closed state, and a display screen 120B configured on the inner surface facing the main body 110 in the closed state. The display screens 120A and 120B may have different display areas and screen shapes from each other, but these screens are composed of a single display body to be described later, so that the display areas and the screen shapes are completely the same. As a result, the display area can be maximized.

  FIG. 2 is an enlarged side view of the portable electronic device 100. In the main body 110, a main body side display body 111 constituting the display screen 110A, a circuit board 112 on which a semiconductor circuit element such as a clock circuit, a crystal resonator and other electronic components are mounted, and a power source battery are provided. Built in. The main body side display body 111 includes a liquid crystal display body, an electroluminescence display body, and other various electro-optical devices. In the case of a liquid crystal display that is not a self-luminous display, it is preferable to include an illumination device such as a backlight. It is desirable that the main body side display body 111 is directly mounted on the circuit board 112 in order to make the main body 110 compact.

  The open / close display unit 120 incorporates a single display 121 that constitutes the display screens 120A and 120B. The single display body 121 is configured such that a plurality of display pixels (dots) whose display modes can be controlled independently of each other are visible from both the front and back sides. The single display body 121 is a transparent display body that can be seen through at least the opposite side in a predetermined driving state. In this case, the transparency is preferably that the average transmittance in the visible light region is 35% or more, and more preferably 50% or more. Further, the single display body 121 is a self-luminous display body, in which the display pixels of the display body emit light themselves and do not require external illumination light.

  FIG. 3 is an enlarged partial cross-sectional view showing a part of a configuration example of the single display body 121 in an enlarged manner. This single display body 121 shows the example comprised with the organic electroluminescent display body. Transparent substrate 1211, transparent anode 1212, insulating layer 1213, hole injection layer / organic light emitting layer 1214, cathode 1215 that also functions as an electron transport layer, auxiliary wiring 1215 ′ for reducing wiring resistance, sealing agent 1216, and sealing It is configured as a transparent panel in which stop substrates 1217 are sequentially stacked. The transparent substrate 1211 and the sealing substrate 1217 can be made of glass, plastic, or the like, or can be made of a flexible material. The transparent anode 1212 is made of a transparent conductor such as ITO (indium tin oxide) or IZO (indium zinc oxide). The cathode 1214 is formed of a metal thin film having a low work function such as a calcium thin film, a magnesium thin film, or an aluminum thin film in order to improve electron injection.

  As the hole injection layer / organic light emitting layer, for example, a conductive polymer such as Baytron P (trade name: VPAl 4083) is formed, and a polyfluorene-based poly-polyphenylene vinylene-based material corresponding to the emission color is formed thereon. A structure in which a light emitting polymer having π conjugation such as, for example, is stacked can be used.

  The single display 121 has a hole injection layer / organic light emitting layer 1214 having a different emission color (for example, red, green, blue) for each dot, and a predetermined arrangement pattern (striped arrangement, delta) similar to a color filter or the like. Color display is possible by arranging in an array, a diagonal mosaic arrangement, or the like. Moreover, it is good also as a multilayer structure formed by laminating | stacking a some transparent panel instead of the above single layer structures. In this case, if the light emission colors of the respective layers are different from each other (for example, red, green, blue, etc.), color display can be performed by combining a plurality of layers such as dots and adjusting brightness. In this case, the display body structure in which the multi-layer transparent panels are laminated corresponds to the single display body of the present invention because the display pixels of each layer are visible from both the front and back sides.

  In addition, in order to obtain said luminescent color, the following luminescent substances (fluorescent substance) can be used. For example, those having a red emission color include rhodamine, DCM derivatives, and the like. Examples of those having a green luminescent color include quinacrine and coumarin 6. Berylene etc. are mentioned as what has a blue luminescent color.

  FIG. 4 is a longitudinal sectional view schematically showing a configuration example of the main body side display body 111. The main body side display body 111 is a TN or STN type liquid crystal display body that includes a polarizing plate and uses nematic liquid crystal. The liquid crystal display 111 has a panel structure in which transparent substrates 1111 and 1112 made of glass, plastic, or the like are bonded together with a sealant 1113 interposed therebetween. A transparent electrode 1114 and an alignment film 1115 are sequentially stacked on the inner surface of the transparent substrate 1111, and a transparent electrode 1116 and an alignment film 1117 are sequentially stacked on the inner surface of the transparent substrate 1112. Liquid crystal 1118 is sealed between the transparent substrates 1111 and 1112. Further, polarizing plates 1119A and 1119B are disposed on the outer surfaces of the transparent substrates 1111 and 1112.

  The main body side display body 111 may be any of a transmissive liquid crystal display body, a reflective liquid crystal display body, and a transflective liquid crystal display body. The display device is configured as a transflective display body, and an illuminating device 113 serving as a backlight is disposed behind the display device. The illuminating device 113 includes a light source 1131 configured by an LED (light emitting diode) or the like, a light guide plate 1132 configured by an acrylic resin, and a reflection plate 1133 disposed behind the light guide plate 1132. In addition, a diffusion plate 1134 and a light collector 1135 are preferably disposed on the liquid crystal display 111 side of the light guide plate 1132.

  FIG. 5 is a schematic block diagram schematically showing the internal hardware configuration of the present embodiment. The portable electronic device 100 includes a central control unit 100X that performs overall control. The central control unit 100X includes a CPU (central processing unit), a memory, an internal bus, an MPU (microprocessor unit) including an input / output circuit, and the like. The central control unit 100X is configured to control each unit described below by executing a control program stored in a memory or the like.

  The central control unit 100X is connected to a timing circuit unit 100Y including an oscillation circuit, a frequency dividing circuit, a counter circuit, and the like, and outputs predetermined time data to the central control unit 100X. The central control unit 100X is connected to the external operation unit 110S and an open / close detector 100T that detects the open / closed state of the open / close display unit 120. The opening / closing detector 100T can be configured by, for example, a pressing switch configured to be pressed when the main body 110 and the opening / closing display unit 120 are folded, a rotary switch built in the hinge unit 130, or the like.

  The central control unit 100X is connected to the display drive control units 111D and 121D and the illumination device 113. The display drive control unit 111D outputs a drive signal to the main body side display body 111 in accordance with a control signal from the central control unit 100X. The lighting device 113 is switched between lighting and non-lighting in accordance with a control signal from the central control unit 100X, and the light output during lighting is controlled. The display drive control unit 121D outputs a drive signal to the single display body 121 according to the control signal of the central control unit 100X.

  In the present embodiment, a communication control unit 100Z can be provided. The communication control unit 100Z includes at least a receiving circuit, and sends received data to the central control unit 100X. Further, a reception data conversion circuit that converts a signal received by the reception circuit in accordance with a predetermined protocol may be provided. Further, a transmission circuit and a transmission data conversion circuit may be provided. The communication control unit 100Z can realize, for example, a radio clock function that corrects the time by receiving a radio wave transmitted from a transmitting station that transmits time data, and a radio using a mobile phone network. A telephone function can also be realized. When the radio wave is received, the communication control unit 100Z outputs an incoming signal to the central control unit 100X, and then transmits received data to the central control unit 100X.

  In the present embodiment, a power generation device 100W configured by a solar battery or a small generator having a movable weight such as a rotating weight can be provided. The power generation apparatus 100W supplies the generated power to power storage means that is configured by a secondary battery, a large capacity capacitor, or the like (not shown). When power generation is performed by irradiating the solar cell with light or swinging the movable weight, the power generation device 100W outputs a power generation signal for notifying the central control unit 100X of the power generation state.

  FIG. 6 is a schematic configuration diagram schematically showing a circuit configuration of the display drive control unit 121D. The display drive control unit 121D includes a display signal generation circuit 121d1, a scanning line control circuit 121d2 that operates in synchronization with the display signal generation circuit 121d1, and a scanning line drive circuit 121d3 that operates according to a control signal of the scanning line control circuit 121d2. I have. Here, the scanning lines S1, S2, S3,..., Sn correspond to the horizontal lines of the single display body 121 in the illustrated example, and each of the circuits corresponds to the horizontal line driving unit. The scanning signal output from the drive circuit 121d3 corresponds to the horizontal drive signal.

  The display signal generation circuit 121d1 outputs image data to the data line control circuit 121d4, and the data line control circuit 121d4 outputs a control signal corresponding to the image data to the data line drive circuit 121d5. The data line driving circuit 121d5 selects any one of the scanning lines S1, S2, S3,..., Sn for the data lines D1, D2, D3,. A data signal is output every time. Here, the data line corresponds to the vertical line, each circuit corresponds to the vertical line driving unit, and the data signal corresponds to the vertical driving signal.

  The switching circuit 121d6 outputs a switching signal to the scanning line driving circuit 121d3 in accordance with a control signal output from the central control unit 100X based on the detection signal of the open / close detector 100T. The scanning line driving circuit 121d3 is configured to reverse the scanning order of the scanning lines S1, S2, S3,... Sn in response to the switching signal. For example, if the normal scanning procedure is to perform scanning in the order of the scanning lines S1, S2, S3,..., Sn, the switching signal is inverted, so that the scanning lines Sn, Sn-1, Sn-2 are reversed. , Sn-3,..., S1 are scanned in this order. As a result, on the display screens 120 </ b> A and 120 </ b> B of the single display body 121, an image inverted in the vertical direction in the figure is displayed. For example, when an erect image is displayed on the display screen 120B shown in FIG. 1 (a), an inverted image is displayed on the display screen 120A shown in FIG. 1 (b). Since the image can be turned upside down, an upright image can be displayed on the display screen 120A.

  FIG. 7 is a schematic configuration diagram schematically showing a circuit configuration of the display drive control unit 111D. The display drive control unit 111D includes a display signal generation circuit 111d1, a scanning line control circuit 111d2 that operates in synchronization with the display signal generation circuit 111d1, and a scanning line drive circuit 111d3 that operates according to a control signal from the scanning line control circuit 111d2. I have. The display signal generation circuit 111d1 outputs image data to the data line control circuit 111d4, and the data line control circuit 111d4 outputs a control signal corresponding to the image data to the data line driving circuit 111d5. The data line driving circuit 111d5 selects any one of the scanning lines S1, S2, S3,..., Sn for the data lines D1, D2, D3,. A data signal is output every time.

  FIG. 8 is a schematic flowchart showing an operation procedure of a control program that operates in the central control unit 100X of the present embodiment. When the control program is executed, the open / close state of the open / close display unit 120 is detected in step S1. The detection of the open / close state is performed by observing the state of the detection signal of the open / close detector 100T shown in FIG. Here, when the open / close display unit 120 is in the closed state, the presence or absence of a trigger signal is confirmed in step S2.

  The trigger signal is an incoming signal from the communication control unit 100Z, a power generation signal from the power generation device 100W, an operation signal from the external operation unit 110S, and the like. When these are output to the central control unit 100X, the trigger signal Is generated. If the trigger signal is not generated, the display screen 120A provided on the outer surface of the open / close display unit 120 in a step S3 is in a non-display state (power saving mode). If the trigger signal is generated, the display screen 120A is in the display state in step S4, the single display 121 is turned on, and the display according to the content of the trigger signal, for example, the incoming state or the communication state if the incoming signal is described above. If the above power generation signal, the power generation state or the charge state display, and if the above operation signal, the display corresponding to the operation content appears appropriately on the display screen 120A. The display on the display screen 120A is performed in such a manner that the display is normally visually recognized when the single display body 121 is viewed in the front side mode, that is, the display screen 120A.

  Here, when the display screen 120A is in a non-display state as described above, the main body side display body 111 is driven in step S8 indicated by a broken line in the figure after the entire surface of the single display body 121 is made transparent. The display screen 110A can be brought into a display state. If it does in this way, it will become possible to visually recognize display screen 110A through single display body 121 in a transparent state. Further, even when the display screen 120A is set to the display state, a part of the display screen 120A can be set to the transparent state. Therefore, in step S8, the main body side display body 111 is driven to perform a predetermined display on the display screen 110A. The display on the display screen 110A and the display on the display screen 120A can be made visible.

  On the other hand, when the open / close display unit 120 is in the open state in step S1, the single display body 121 is driven in the back side mode in step S5, and a predetermined display is performed. In this back side mode, the single display body 121 is driven in such a manner that the display is normally visually recognized when viewed on the display screen 120B. Here, the front side mode and the back side mode are switched between each other by inverting the display mode of the single display body 121 using the switching signal output from the switching circuit 121d6 shown in FIG. 6 by the control signal of the central control unit 100X. It is done. In step S6, the main body side display body 111 of the main body 110 is driven, and a predetermined display is made on the display screen 110A.

  Thereafter, in step S7, it is confirmed whether or not an operation stop operation signal is output from the external operation unit 110S or the like. If the signal is not output, the process returns to step S1. When the operation stop operation signal is output, the control program ends.

  FIG. 9 is a functional block diagram showing a configuration of function realizing means realized by a control program executed by the central control unit 100X. The state detection means F1 including the central control unit 100X and the configuration of the open / close detector 100T, the external operation unit 110S, the communication control unit 100Z, the power generation device 100W, and the like is the state of each unit, for example, the open / close state of the open / close display unit 120, the external operation unit The operation state of 110S, the incoming state of the communication control unit 100Z, the power generation state of the power generation device 100W, and the like are detected. The display mode switching means F2 switches the display mode according to the detected state of each part. The display mode switching means F2 performs switching between the power saving mode and the display mode, switching between the front side mode and the back side mode of a single display, switching between various modes corresponding to the type of display content, and the like.

  The display mode switching means F2 outputs a mode switching signal to the display signal sending means F3 including the display signal generation circuit 121d1 and the driving mode switching means F4 including the switching circuit 121d6 and the like. The display signal sending unit F3 sends a display signal corresponding to the mode switching signal to the data line driving unit F5 including the data line driving circuit 121d5 and the like, and includes a synchronization signal and the like including the scanning line driving circuit 121d3 and the like. It is sent to the scanning line driving means F6. Further, the driving mode switching unit F4 sends a driving switching signal corresponding to the mode switching signal to the scanning line driving unit F6, and appropriately reverses the scanning direction of the scanning line driving unit F6.

  In the present embodiment described above, in the open state shown in FIG. 1A, the single display body 121 is driven in the back side mode, whereby normal display is realized on the display screen 120B, and FIG. In the closed state shown, the single display body 121 is driven in the front side mode, thereby realizing a normal display on the display screen 120A. Here, in the back side mode and the front side mode, the display mode of the single display body 121 is in an inverted state.

  At this time, since the single display 121 is a self-luminous display, an illuminating device such as a backlight is unnecessary, and the display structure is configured to be visible from both the front and back sides, so that it is thin. In addition, display brightness and contrast can be sufficiently secured.

  Moreover, since the single display body 121 is a transparent display body, the display screen 110A of the main body side display body 111 can be visually recognized through the single display body 121 in the closed state. In particular, it is also possible to visually recognize two display modes on the display screen 110A and the display screen 120A. Further, by displaying the background image on the display screen 110A, it is possible to freely set the background pattern and the brightness of the background separately from the display screen 120A, so that variations in the display mode in the closed state can be increased. Alternatively, the visibility of display can be improved.

  For example, by controlling the display signal sending means F3 by the display mode switching means F2 shown in FIG. 9, the display signal sending means F3 causes the data line driving means F7 and the scanning line driving means F8 of the main body side display body 111 to run in parallel. Thus, the main body side display body 111 can be turned on simultaneously with the single display body 121. In this case, the display content of the display screen 110 </ b> A configured by the main body side display body 111 and the display content of the display screen 120 </ b> A configured by the single display body 121 can be configured to be related to each other. Thereby, it can comprise so that the display content overlaid by the internal and external display screen can be visually recognized.

  In the said embodiment, although the single display body 121 was comprised as a transparent display body, even if it is not a transparent display body, the display pixel should just be visible from both front and back. For example, each display pixel is configured to be switchable between an opaque light color (white) and a dark color (black), and a display body in which each display pixel can be similarly viewed from both the front and back surfaces is exemplified. . In this case, since the transparent state cannot be configured, the main body side display body cannot be seen through the single display body 121 as described above, but the other functions are the same as those described above. .

[Second Embodiment]
FIG. 10 is a schematic perspective view showing an appearance of a portable electronic device 200 according to a second embodiment different from the first embodiment. Here, FIG. 10A shows a state where the open / close display unit 220 is open (open state) with respect to the main body 210, and FIG. 10B shows a state where the open / close display unit 220 is closed (closed state). Note that parts not described below are configured in the same manner as in the first embodiment.

  This embodiment is similar to the first embodiment in that it includes a main body 210 and an open / close display unit 220 configured to be openable / closable with respect to the main body 210. However, the main body 210, the open / close display unit 220, and The hinge part 230 that pivotally connects the main body 210 and the open / close display part 220 is provided on the side surfaces of the main body 210 and the open / close display part 220 so that the open / close display part 220 opens sideways with respect to the main body 210. Different from the embodiment. In this embodiment as well, wearing bands 240 are connected to both ends of the main body 210. In this embodiment, the hinge portion 230 is provided on a side portion different from the end portion connected to the mounting band 240 in the main body 210.

  In addition, the display screen 210A is provided on the inner surface of the main body 210, the display screen 220A is provided on the outer surface of the open / close display unit 220, and the display screen 220B is provided on the inner surface of the open / close display unit 220. And the point that the main body side display body 211 is disposed in the main body 210 and the single display body 221 is disposed in the open / close display unit 220 is the same as in the first embodiment.

  FIG. 11 is an enlarged partial cross-sectional view showing a part of a single display body 221 that can be used in this embodiment. The single display body 221 is a transparent display body similar to the single display body 121 of the first embodiment, and is also an organic electroluminescence display body. Here, the single display body 221 described below can also be used in the first embodiment, and the single display body 121 of the first embodiment can also be used in this embodiment.

  The single display 221 includes a transparent substrate 2211, a transparent anode 2212, an insulating layer 2213, a hole injection layer / light emitting layer 2214, a cathode 2215, an auxiliary wiring 2215 ′, a sealing agent 2218, and a sealing substrate 2219. This is the same as the single display body 121 described above. In this single display 221, an insulating layer 2216 is formed on the cathode 2215, and a correction layer 2217 for correcting the transparency is partially formed on the insulating layer 2216. The correction layer 2217 is made of a material having the same light transmission characteristics as the cathode 2215. For example, the correction layer 2217 is formed to have the same material and thickness as the cathode 2215. At this time, the insulating layer 2216 functions as an insulator that prevents an electrical short circuit between the cathode 2215 and the correction layer 2217. The correction layer 2217 is formed in a region other than the region where the cathode 2215 is formed. That is, the planar pattern of the region where the cathode 2215 is formed and the planar pattern of the region where the correction layer 2217 is formed have a pattern shape that is mutually inverted.

  In this single display 221, since the correction layer 2217 is formed in the region where the cathode 2215 is not formed, the light transmission characteristics of the region where the cathode 2215 is formed in the transparent panel structure and other regions are approximated. Therefore, the transparency is made uniform over the entire panel surface. Thereby, the appearance and display quality of the display screen of the single display body 221 can be improved, and the visibility of the display screen 210A is improved even when the display screen 210A is seen through the single display body 221. Can be made.

  FIG. 12 is a schematic configuration diagram schematically illustrating a circuit configuration of the display drive control unit 221D of the single display body 221 of the second embodiment. The display drive control unit 221D includes a display signal generation circuit 221d1, a scan line control circuit 221d2 that operates in synchronization with the display signal generation circuit 221d1, and a scan line drive circuit 221d3 that operates according to a control signal of the scan line control circuit 221d2. I have. Here, the scanning lines S1, S2, S3,... Sn correspond to the horizontal line of the single display 221 in the illustrated example, and each circuit corresponds to the horizontal line driving unit, and scanning line driving. The scanning signal output from the circuit 221d3 corresponds to the lateral drive signal.

  The display signal generation circuit 221d1 outputs image data to the data line control circuit 221d4, and the data line control circuit 221d4 outputs a control signal corresponding to the image data to the data line driving circuit 221d5. The data line driving circuit 221d5 outputs a data signal to the data lines D1, D2, D3,. Here, the data line corresponds to the vertical line, each circuit corresponds to the vertical line driving unit, and the data signal corresponds to the vertical driving signal.

  The switching circuit 221d6 outputs a switching signal to the data line driving circuit 221d5 in accordance with a control signal from the central control unit similar to that in the first embodiment. The data line driving circuit 221d5 is configured to invert the output arrangement of the data lines D1, D2, D3,... Dm according to the switching signal. For example, the arrangement of the drive signals supplied to the normal data lines D1, D2, D3,..., Dm is such that the data lines Dm, Dm-1, Dm-2,. -Supplied in the arrangement mode reversed left and right like D1. As a result, on the display screens 220 </ b> A and 220 </ b> B of the single display 221, an image reversed in the horizontal direction in the figure is displayed. For example, when a predetermined image is displayed on the display screen 220B shown in FIG. 10A, an image that is horizontally reversed with respect to the predetermined image is displayed on the display screen 220A shown in FIG. By inverting the display image left and right by inverting the switching signal, the predetermined image is displayed on the display screen 120A.

  FIG. 13 is a functional block diagram showing the configuration of the function realizing means of the second embodiment. The state detection means F1 includes a configuration corresponding to the external operation unit 220S or an open / close detector similar to that of the first embodiment, a communication control unit, a power generation device, and the like. The state of each unit, for example, open / close of the open / close display unit 220 The state corresponding to the state, the operation state of the external operation unit 220S, the incoming state of the communication control unit, the power generation state of the power generation device, and the like are detected. Then, the display mode switching means F12 switches the display mode according to the detected state.

  The display mode switching unit F12 outputs a mode switching signal to the display signal sending unit F13 including the display signal generation circuit 221d1 and the driving mode switching unit F14 including the switching circuit 221d6 and the like. The display signal sending unit F13 sends a display signal corresponding to the mode switching signal to the data line driving unit F15 including the data line driving circuit 221d5 and the like, and sends a synchronization signal and the like to the scanning line driving unit F16. Further, the driving mode switching means F14 sends a driving switching signal corresponding to the mode switching signal to the data line driving means F15, and the data lines D1, D2, D3,... Dm of the data line driving circuit 221d5. The order of arrangement of the data signal supply mode is reversed left and right. That is, the potentials supplied to the data lines D1, D2, D3,... Dm are supplied to the data lines Dm, Dm-1, Dm-2,. Here, the scanning direction of the scanning line driving means F16 is constant.

  Also in this embodiment, by controlling the display signal sending means F13 by the display mode switching means F12, the display signal sending means F13 causes the data line driving means F17 and the scanning line driving means F18 of the main body side display body 211 to run in parallel. By controlling, the main body side display body 211 can be turned on simultaneously with the single display body 221. In this case, the display content of the display screen 210 </ b> A configured by the main body side display body 211 and the display content of the display screen 220 </ b> A configured by the single display body 221 can be configured to be related to each other. Thereby, it can comprise so that the display content overlaid by the internal and external display screen can be visually recognized.

  It should be noted that the portable electronic device of the present invention is not limited to the illustrated examples described above, and it is needless to say that various modifications can be made without departing from the gist of the present invention. For example, in each of the above-described embodiments, the case where the single display body has a dot matrix structure has been described. However, the single display body may have segment type display pixel structures having various shapes. Further, the drive structure and drive method may be active matrix drive or passive matrix (simple matrix) drive.

  The portable electronic device of the present invention may be any device other than the above-described wristwatch type device having a wristwatch function, such as a mobile phone, a PDA, a notebook computer, a digital camera, a portable translator or interpreter, a portable navigation device. Including equipment, etc. Furthermore, it may be other than a portable electronic device, for example, it can be applied to electronic devices such as a personal computer and a stationary telephone other than the portable type.

BRIEF DESCRIPTION OF THE DRAWINGS Schematic perspective view (a) and (b) which shows the external appearance of 1st Embodiment which concerns on this invention. The expanded partial side view which shows the main-body part of 1st Embodiment. The expanded partial sectional view which shows the structure of the single display body of 1st Embodiment. The schematic structure sectional view showing typically the structure of the main body side display object of a 1st embodiment. FIG. 2 is a schematic configuration block diagram schematically showing an internal configuration of the first embodiment. The schematic block diagram which shows typically the structure of the display drive control part of the single display body of 1st Embodiment. The schematic block diagram which shows typically the structure of the display drive control part of the main body side display body of 1st Embodiment. The schematic flowchart which shows the operation | movement procedure of 1st Embodiment. The schematic block diagram which shows the structure of the function implementation means of 1st Embodiment. The schematic perspective view (a) and (b) which shows the external appearance of 2nd Embodiment. The expanded partial sectional view which shows the structure of the single display body of 2nd Embodiment. The schematic block diagram which shows typically the structure of the display drive control part of the single display body of 2nd Embodiment. The schematic block diagram which shows typically the structure of the display drive control part of the single display body of 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Portable electronic device, 100X ... Central control part, 100Y ... Timing circuit part, 100Z ... Communication control part, 100W ... Power generation apparatus, 100T ... Opening / closing detector, 110 ... Main body, 110A, 120A, 120B ... Display screen, 111 DESCRIPTION OF SYMBOLS ... Main body side display body, 112 ... Circuit board, 120 ... Open / close display section, 121 ... Single display body, 121D ... Display drive control section, d1211 ... Display signal generation circuit, 121d2 ... Scan line control circuit, 121d3 ... Scan line drive Circuit, d1214 ... data line control circuit, 121d5 ... data line drive circuit, 121d6 ... switching circuit, 130 ... hinge part, 140 ... mounting band, F1 ... state detection means, F2 ... display mode switching means, F3 ... display signal sending means , F4: Driving mode switching means, F5: Data line driving means, F6: Scanning line driving means

Claims (14)

In a portable electronic device having a main body and an open / close display unit configured to be openable and closable with respect to the main body and provided with display screens on both the inside and outside thereof,
A self-luminous single display body that is arranged in the open / close display section and is configured to be able to display both on the display screens on both the inside and outside of the open / close display section, and a display drive that drives and controls the single display body A portable electronic device comprising a control unit.   The display drive control unit is provided on the outer surface display drive mode for displaying on the display screen provided on the outer surface of the open / close display unit and the inner surface of the open / close display unit with respect to the single display body. 2. The portable electronic device according to claim 1, wherein the portable electronic device is configured to be capable of realizing an inner surface display driving mode reversed from the outer surface display driving mode for displaying on the display screen.   The outer surface display driving mode is realized in a state where the open / close display unit is arranged to overlap the main body, and the inner surface display driving mode is realized in a state where the open / close display unit is opened with respect to the main body. The portable electronic device according to claim 2, wherein the portable electronic device is configured as described above.   The portable electronic device according to any one of claims 1 to 3, wherein the single display body is a transparent display body.   The portable electronic device according to any one of claims 1 to 4, wherein the single display body is an organic electroluminescence display body.   6. The portable electronic device according to claim 1, wherein the single display body is a dot matrix display body.   The display drive control unit outputs a horizontal drive signal to a plurality of horizontal lines connected to each dot, and outputs a vertical drive signal to a plurality of vertical lines connected to each dot. And a driving mode switching means for switching the outer surface display driving mode and the inner surface display driving mode by inverting the signal output mode for each line of the horizontal line driving unit or the vertical line driving unit. The portable electronic device according to claim 6, wherein   The portable electronic device according to any one of claims 1 to 7, wherein a main body side display body having a display screen on a side in contact with the open / close display body is disposed on the main body.   The portable electronic device according to any one of claims 1 to 9, further comprising a mounting band connected to the main body.   A functional operation unit having a predetermined operation function, a state detection unit that detects an operation state of the functional operation unit, and a display mode switching unit that switches a display mode of the transparent display body according to a detection result of the state detection unit; The portable electronic device according to claim 1, further comprising:   The portable electronic device according to claim 10, wherein the functional operation unit is an external communication device having a communication function with the outside, and the operation mode is a reception operation.   The portable electronic device according to claim 10, wherein the function operation unit is a power generation device having a power generation function, and the operation mode is a power generation operation. In a display control method for a portable electronic device having a main body and an open / close display unit configured to be openable and closable with respect to the main body and provided with a display screen on each of the inside and outside surfaces thereof,
Controlling a self-luminous single display that is arranged in the open / close display unit and configured to be able to display both on the display screens on both the inside and outside of the open / close display unit,
According to the open / closed state of the open / close display unit with respect to the main body, a back side mode in which display is performed on the display screen on the inner surface of the open / close display body by the single display body; A method for controlling a portable electronic device, wherein a display mode on a display screen on an outer surface of the display is switched to a front side mode. In a display control method for a portable electronic device, comprising: a main body provided with a display screen; and an open / close display unit configured to be openable and closable so as to cover the display screen of the main body and provided with display screens on both the inner and outer surfaces thereof.
A main body-side display body arranged on the main body and configured to be able to realize display on the display screen of the main body, and disposed on the open / close display section, and displays both on the display screens on both the inside and outside of the open / close display section. Control a self-luminous transparent display body that is configured to be feasible,
When the open / close display unit is in a state of covering the display screen of the main body, the main body-side display body is controlled to form a display on the display screen of the main body, and at least a part of the transparent display body is transparent A control method for a portable electronic device, wherein the display screen of the main body is viewed through the transparent display body.

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