KR100818170B1 - Rollable information display and portable terminal having it - Google Patents

Abstract

A roller-type flexible display device and a portable information terminal equipped with the display device are provided to be applied to a miniaturized portable information terminal, thereby offering high-quality contents on one large screen as being kept in roller type while a user is moving, consequently user portability can be easily realized. A display panel unit has a flexible display. A display driver is configured to keep the flexible display by winding the display in roller type or to unfold the wound display, and is connected/fixed to a portable information terminal. The display driver comprises as follows. A fixing bar fixed to the terminal has a fixed axis(81). A rotative case(83) functions as a supporting axis capable of winding the display in roller type, and one end thereof is fixed to the display. A coil spring(82) provides an elastic repulsing force so that the display is wound in original state, as storing the repulsing force when the display is unfolded.

Description

Scroll type flexible display device and personal portable information terminal having same {Rollable Information Display And Portable Terminal Having It}

1 is a schematic diagram showing mobile phones having a flat panel display such as a conventional LCD,

2 is a perspective view showing a PDA having a flat panel display such as a conventional LCD,

3 is a schematic diagram illustrating a mobile phone having an expandable display window according to an example of the prior art;

4 is a conceptual diagram illustrating a terminal having a plurality of windows according to another example of the prior art;

5 is a perspective view showing a personal portable information terminal having a scroll-type flexible display device according to the present invention,

6 is a perspective view showing a personal portable information terminal having a bi-directional scroll type flexible display device according to the present invention,

FIG. 7 is a conceptual diagram illustrating an unwinding and winding process of the flexible display illustrated in FIG. 5;

8 is a perspective view showing the configuration of the scroll-type flexible display device according to an embodiment of the present invention,

9 is a detailed view showing the structure of the winding means using the ball constituting the scroll-type flexible display device shown in FIG.

10 is a detailed view showing the driving principle of the rotary case and the movement path of the ball shown in FIG.

11 is a photograph of the rotating case shown in FIG.

12 is an exploded perspective view showing a state in which a roll type flexible display device and a personal portable information terminal according to the present invention are detachable;

FIG. 13 is an exploded perspective view illustrating a detachable method of the scroll type flexible display device illustrated in FIG. 12;

FIG. 14 is a combined perspective view illustrating a state in which the scroll type flexible display device illustrated in FIG. 12 is incorporated into a personal portable information terminal.

  ♠ Explanation of symbols on the main parts of the drawing ♠

54: flexible display window 55: flexible display holder

56: rewind antenna 81: fixed shaft

82: coil spring 83: rotation case

84: inner rail 85: outer rail

86 ball 87 stop

88: front case 89: groove

The present invention applies a scroll type flexible display to a personal portable information terminal, and can provide high-definition content such as photographic images, digital multimedia broadcasting (DMB), the Internet, movies, and games on a large screen. It relates to a flexible display device and a personal portable information terminal having the same.

The conventional mobile display of the personal information terminal has been applied to a flat panel display (FPD) such as LCD, OLED, etc., which is smaller in volume and has an advantage in realizing high quality. However, with the rapid development of personal handheld information terminals, miniaturization of mobile products becomes possible, and recently, high-resolution displays are being applied in response to high-definition multimedia. In the display of such a miniaturized device, the conventional flat panel display has limitations on the screen size, so that the user cannot easily recognize the screen. In addition, in the near future, mobile devices such as mobile phones, PDAs, PMPs, car navigation systems, and game consoles that display information in a mobile environment may be used for the introduction of a ubiquitous system. It is a demand.

1 is a schematic view showing a mobile phone (flip type (a), folding type (b), slide type mobile phone (c)) having a flat panel display such as a conventional LCD, reference numeral 11 is a flip-type mobile phone, 12 is a folding mobile phone 13 represents a slide type mobile phone, and 14 to 16 display an LCD display device. 2 is a perspective view showing a PDA having a flat panel display such as a conventional LCD, 21 is a PDA body, 22 is an LCD display device, 23 is an antenna, 24 is a speaker, 25 is an external button, 26 is a keypad, 27 represents an external port, respectively.

The personal portable information terminal equipped with a flat panel display such as an LCD or an OLED as shown in FIGS. 1 and 2 has a limited display size compared to that of a device. The personal portable information terminal equipped with this type of flat panel display can be limited to any size in order to express high-definition contents such as photographic images, digital multimedia broadcasting (DMB), internet, movies, and games. There is a limit to how easy it is for a user to recognize information. In addition, in the current flat panel display technology, increasing the number of pixels at a fixed screen size has a limitation in manufacturing, and when the display device is enlarged using an existing flat panel LCD or OLED, the volume of a device such as a mobile phone increases. Has

A technique for realizing a large screen in a miniaturized device is known from Korean Patent Laid-Open Publication No. 2006-0130985, which includes a display that can provide a separate extended display window when watching various games and movies. Window expandable cell phones are known. Figure 3 is a schematic view showing a mobile phone having an expandable display window as described above, such a mobile phone body 31, the protective cover 32 formed on both sides, an expandable LCD panel 33, which can send and receive data A port 34 and a terminal display device 35. This technology provides a mobile phone with an expandable display window that has a detachable structure so that it can be used only when necessary by making the display window independent, and configured to use the extended display window when satellite broadcasting, mobile game, internet search, etc. It was. However, this technology has to use a separate expandable display window, which is not easy to carry due to its small volume, which has a disadvantage of limitation for mobile display.

In addition, the Republic of Korea Patent Publication No. 2006-0022080 is known for a terminal having a plurality of main display using a thin panel. 4 is a conceptual diagram illustrating a terminal having a plurality of main displays (windows) as described above. The terminal includes a display terminal body 41, a keypad 42, a sub display window 43, and first to third devices. It consists of main display windows 44-46. Terminals of this technology have a plurality of main display sections which have at least one display section or keypad section protruding outward on the main body, thereby improving the usability of the mobile terminal. Such a terminal having a plurality of main display units can display various contents simultaneously on multiple screens due to the large number of display windows, but each display is independently separated to display high-definition contents on one large screen. Since the main display unit is overlapped, there is a disadvantage that the volume of the device becomes large.

The present invention has been made to solve the problems of the prior art as described above, by applying a scroll-type flexible display device that can provide high-definition content to a miniaturized personal portable information terminal, photo image, DMB (Digital Multimedia) Not only provide high-definition content such as broadcasting, Internet, movies, games, etc. in one interactive screen, but also roll-type flexible display device that is easy to carry by user when it is rolled when moving and personal portable information terminal equipped with the same The purpose is to provide.

In addition, the present invention has another object to provide a portable personal information terminal that is easy to carry by minimizing the volume of the device and light weight by using a flexible display in the form of a scroll.

In order to achieve the above object, the present invention can be mounted on one side or both sides of a conventional personal portable information terminal, and wound around a flexible display (flexible display) composed of a flexible substrate that can be bent, bent, or wound in a rolled form. A roll-type flexible display device which is used as a display window when it is opened out, which is a display panel unit having a flexible display, and a display drive unit which can be connected to and fixed to a personal portable information terminal, and is configured to be rolled up to store the flexible display in a roll form or to be unfolded when used. Characterized in that it comprises a.

The display panel unit of the present invention may further include a holder coupled to one end of the flexible display to support the flexible display, and a scroll type antenna attached to the outer side of the flexible display to be wound or unfolded with the flexible display.

The display driving unit of the present invention has a fixed shaft and a fixed stand that can be fixed to a personal portable information terminal, and is rotatably connected to the fixed shaft serves as a support shaft for winding the flexible display in the form of a roll, and one end of the flexible display is fixed rotation It may include a case and a coil spring rotatably installed on the fixed shaft to store the elastic restoring force when the flexible display is unfolded and to provide the elastic restoring force so that the flexible display is wound to its original state.

According to the present invention, the rotating case has an inner rail and an outer rail connected to each other on its front face, and the display driving part is movable on the fixed shaft so as to be located in front of the rotating case and the ball movable along the inner and outer rails. It may further include a front case coupled to form a groove for the movement of the ball to prevent separation of the ball so that the ball is movable only along the inner rail and the outer rail.

In addition, the present invention may be formed between the inner rail and the outer rail to prevent the ball from proceeding further in the direction to move in, and to allow the ball to proceed in the outgoing direction.

In addition, the present invention is characterized in that the scroll type flexible display device configured as described above is built in one side or both sides of a conventional personal portable information terminal.

In addition, the present invention is a conventional portable personal information terminal having an information transmitter on one side or both sides, and an information receiver connected to the information transmitter is formed on one side, the removable flexible display device configured as described above detachable with the personal portable information terminal. Characterized in that it comprises a.

In the following, with reference to the accompanying drawings, a preferred embodiment of a scroll-type flexible display device and a personal portable information terminal having the same according to the present invention will be described in detail.

The flexible display used in the present invention uses a thin flexible substrate that can be bent, bent or wound like a paper in principle, and is light, thin, unlike a flat panel display using a conventional rigid glass substrate. Strong impact resistance and free bending. Flexible displays also feature a display that is unbreakable, ie rollable.

5 is a perspective view showing a personal portable information terminal having a scroll-type flexible display device according to the present invention, Figure 6 is a perspective view showing a personal portable information terminal having a bi-directional scroll type flexible display device according to the present invention. .

5 and 6, the personal portable information terminal according to this embodiment has a built-in scroll flexible display device on one side or both sides of a typical portable terminal 51, the scroll-type flexible display is a portable terminal ( 51) configured to unfold or to be embedded inside.

The scroll type flexible display device according to this embodiment is configured to display a display panel unit having a flexible display (OLED, LCD, etc.), and to roll up the flexible display in the form of a roll or to unfold it when used, and to a personal portable information terminal. It is composed of a fixed display driver. The display panel unit includes a flexible display window 54, a holder 55 supporting the flexible display window 54, and an antenna 56 installed in the flexible display window 54 to facilitate external transmission and reception. 5 and 6, reference numeral 52 denotes a keypad, and 53 denotes a display window of the terminal.

7 is a conceptual diagram illustrating the unwinding and winding process of the scroll-type flexible display shown in FIG. As shown in Fig. 7, the personal portable information terminal according to this embodiment can be used as follows. That is, when the scroll type flexible display is not used as shown in FIG. 7A, the flexible display is rolled up in the form of a scroll, and as shown in FIG. 7B, a picture image, video content, DMB, etc. When using high-definition content through the scroll type flexible display, by pulling the flexible display holder 55 in the x direction to open the flexible display window 54, the content can be used on a large screen. In addition, when the flexible display window 54 is rewound, the flexible display holder 55 is pulled out momentarily, so that the flexible display window 54 can be wound using the elastic restoring force of the coil spring to be described later as shown in FIG. It can be stored in a fully wound state that is convenient to carry as in a).

8 is a perspective view showing the configuration of the scroll-type flexible display device according to an embodiment of the present invention. As shown in FIG. 8, the scroll type flexible display device 80 according to this embodiment is configured to be rolled up in a rolled display form or to be unwound when used in a roll form and has a display driving unit fixed to a personal portable information terminal. This display drive is along the rotating shaft 83, the rails 84, 85 having a fixed shaft 81, a coil spring 82, the inner rail 84 and the outer rail 85 and the stop 87 It consists of a moving ball 86 and a front case 88.

The roll-type flexible display device 80 configured as described above is mounted in a form in which a holder having a fixed shaft 81 and a front case 88 are fixed to the portable terminal 51. The coil spring 82 and the rotation case 83 are rotatably installed around the fixed shaft 81 fixed to the portable terminal 51. At this time, the fixed shaft 81 and the rotary case 83 are connected to each other by the coil spring 82, and stores the elastic restoring force in the coil spring 82 when the rotary case 83 rotates. That is, the coil spring 82 is rotatably installed on the fixed shaft 81 to store elastic restoring force when the flexible display window 54 is expanded, and then provide elastic restoring force so that the flexible display window 54 is wound to its original state. do. The rotary case 83 serves as a support shaft for winding the flexible display window 54 in a roll form, and one end of the flexible display window 54 is fixed.

FIG. 9 is a detailed view showing the structure of the winding means using the balls constituting the scroll type flexible display device shown in FIG. 8, and shows the structure of the rotating case 83 and the front case 88. As shown in FIG. As shown in FIG. 9A, an inner rail 84 and an outer rail 85 connected to each other are formed on the front surface of the rotation case 83, and the balls 86 move along the rails 84 and 85. Can be. A stop 87 is formed between the inner rail 84 and the outer rail 85 to prevent further progression in the direction in which the ball 86 enters (counterclockwise with respect to the z-axis). It plays a role and allows the ball 86 to advance in the outgoing direction (clockwise with respect to the z-axis). As shown in (b) of FIG. 9, the front case 88 is coupled to the fixed shaft 81 so as to be located in front of the rotation case 83, thereby preventing the ball 86 from being detached and a groove for the movement of the ball 86. And 89 to allow the ball 86 to move only along the rails 84 and 85.

The working principle of the scroll type flexible display device 80 configured as described above is as follows.

When the flexible display window 54 is extended out of the portable terminal 51, the coil spring 82 stores the external force as an elastic restoring force, and at this time, the flexible display window 54 is wound around the external display without using an external power source by using the stored elastic restoring force. Can be.

When the flexible display window 54 is opened, the rotation case 83 rotates counterclockwise with respect to the z axis. In addition, while extending the flexible display window 54, the rotary case 83 can be freely rotated within the length range of the flexible display window 54. In this way, if the flexible display holder 55 is placed in a state in which the flexible display window 54 is unfolded to a desired size, the rotation case 83 is constrained clockwise about the z axis, so that the elasticity of the coil spring 82 is achieved. Since the flexible display window 54 is not wound inward by the restoring force, the size of the flexible display window 54 can be controlled.

The rotary case 83 has a rotational degree of freedom only in the counterclockwise direction with respect to the z-axis, wherein the ball 86 is formed at the front surface of the rotary case 83 in the clockwise direction with respect to the z-axis, or the outer side thereof. It only moves along the rails 84, 85 having a radius R2, and only in the groove 91 in the fixed front case 88.

FIG. 10 is a detailed view showing the driving principle of the rotating case shown in FIG. 9 and the moving path of the ball, and FIG. 11 is a photograph of the rotating case shown in FIG. Specifically, Fig. 10A shows the initial positions A, B, C, D, E of the balls 86 and the positions H1, H2, H3 of the jaws 86 for explaining the principle of operation. 10 (b) shows a case in which the flexible display window 54 is opened, and the rotating case 83 is rotatable. When the rotation case 83 rotates counterclockwise about the z axis, the ball 86 can move freely along the outer rail 85 without encountering the stop 87. That is, when the initial position of the ball 86 is in A, B, C, the ball 86 is moved along the path of S1 to move to the outer rail 85. At this time, since the jaw is in H3, the ball 86 can move to the outer rail 85. And when the initial position of the ball 86 is at D, the ball 86 is moved along the path of S2 to move to the outer rail (85). Also, when the initial position of the ball 86 is at E, the outer rail 85, the ball 86 continues to move the outer rail 85 along the path of S3. Therefore, when the rotation case 83 rotates counterclockwise with respect to the z-axis, the ball 86 does not meet the stop portion 87 and thus can rotate within the length range of the flexible display window 54.

10C illustrates a case where the flexible display window 54 is fixed. When the rotation case 83 rotates clockwise about the z axis, the ball 86 encounters the stop portion 87 on the rotation case 83 and thus no longer rotates. That is, when the initial positions of the balls 86 are at A, B, and C, the balls 86 move along the path of S4 to meet the stop 87. When the initial position of the ball 86 is at D, the ball 86 moves along the path of S5 and meets the stop 87. In addition, when the ball 86 is at E, the ball 86 moves counterclockwise along the path of S5, meets the jaws of H1 and H2 and follows the jawless rail to stop the stop 87. Meet. Therefore, when the rotation case 83 rotates in the clockwise direction with respect to the z-axis, the ball 86 always meets the stop 87, so that the flexible display window 54 can be fixed.

In order to wind the flexible display window 54, the flexible display holder 55 may be pulled out momentarily. Due to the characteristics of the rail path of the rotary case 83, before winding the flexible display window 54, a process of placing the ball 86 located on the stop 87 on the outer rail 85 is necessary. In order to position the ball 86 located at the stop 87 on the outer rail 85, the rotary case 83 is first rotated counterclockwise with respect to the z axis. Then, the ball 86 is moved to the outer rail 85 along the path of S1. When the flexible display holder 55 is released in this state, the ball 86 moves only along the outer rail 85 by the elastic restoring force of the coil spring 82. That is, the rotation case 83 is rotated in the clockwise direction with respect to the z-axis so that the flexible display window 54 can be wound in a rolled manner. At this time, the rotation case 83 rotates in the clockwise direction, but the reason why the ball does not move to the stop 87 along the S4 is that the coil spring ( This is because the resilience of 82) is large.

In this way, the reel type flexible display device 80 has a simple structure, and the flexible display window 54 can be opened and wound only by the elastic restoring force of the coil spring 82 without an external power source, and thus, a small reel type flexible display device ( 80) can be said to be a suitable structure for applying to a personal digital assistant.

In addition, when receiving and transmitting data in real time, such as DMB, the Internet, an external antenna is required. Therefore, the scroll-type flexible display device 80 according to this embodiment attaches the scroll-type antenna 56 to the periphery of the flexible display window 54 so as to serve as an antenna, so that the flexible display window 54 is unfolded. Accordingly, the rollable antenna 56 may be unfolded at the same time to use real-time video content.

As described above, the scroll-type flexible display device is configured to be embedded in the inside of the personal portable information terminal. However, the scroll-type flexible display device and the personal portable information terminal may be detachable.

12 is an exploded perspective view illustrating a state in which a scroll type flexible display device and a personal portable information terminal are detachable, and FIG. 13 is an exploded view illustrating a detachable type of the scroll type flexible display device shown in FIG. 12. FIG. 14 is a perspective view illustrating a state in which the scroll-type flexible display device illustrated in FIG. 12 is incorporated into a personal portable information terminal.

As shown in (a) of FIG. 12, the personal portable information terminal has an information transmitter 91 on one side thereof, and the scroll type flexible display device as shown in (b) of FIG. An information receiver 92 is connected to the transmitter 91. Accordingly, the personal portable information terminal can transmit and receive data through the information transmission code of the information transmitter 91 of the personal portable information terminal and the information receiver 92 of the scroll type flexible display device 80.

Such a scroll-type flexible display device 80 can be incorporated by mounting in the (-X) direction with respect to the personal portable information terminal as shown in Figure 13 (see Figure 14), can be easily separated in the (+ X) direction.

The present invention applies a scroll type flexible display device to a miniaturized personal portable information terminal, providing not only high-definition contents such as photographic images, digital multimedia broadcasting (DMB), the Internet, movies, and games in one large screen, but also when moving. It is easy to carry by user because it is stored in a roll type.

In addition, the present invention minimizes the volume of the device by using a scroll-type flexible display and can be reduced in weight by 1/3 or less compared to conventional LCDs using glass substrates, and is easy to carry, and scrolls on the outside of the flexible display window. By installing a type antenna, the antenna installation space can be secured to obtain a higher transmit / receive rate.

In addition, if the present invention is applied to the two-way scroll-type flexible display to be deployed to both sides of the personal portable information terminal, it is possible to use two contents at the same time on two large screens.

In the above description with the accompanying drawings, the technical details of the scroll-type flexible display device and a personal portable information terminal having the same have been described by way of example and not by way of limitation. .

In addition, it is obvious that any person skilled in the art can make various modifications and imitations within the scope of the appended claims without departing from the scope of the technical idea of the present invention.

Claims (8)

A rollable flexible display that can be mounted on one or both sides of a typical personal handheld information terminal, which can be folded, bent, or rolled into a flexible display that can be rolled up, stored or rolled out as a display window. As a device, A display panel unit having the flexible display; The flexible display is rolled up in a rolled form and stored or unfolded when used, and includes a display driving unit that can be connected and fixed to a personal portable information terminal. The display driving unit has a fixed shaft and a fixed stand that can be fixed to the personal portable information terminal, and is rotatably connected to the fixed shaft serves as a support shaft for winding the flexible display in the form of a roll, one end of the flexible display is fixed And a coil spring rotatably installed on the fixed shaft to store elastic restoring force when the flexible display is unfolded, and to provide elastic restoring force so that the flexible display is wound to its original state. Type flexible display device. The method according to claim 1, The display panel unit further comprises a holder coupled to one end of the flexible display for supporting the flexible display. The method according to claim 2, The display panel unit is attached to the outside of the flexible display, the scroll type flexible display device further comprises a scroll-type antenna that is wound or unfolded with the flexible display. delete The method according to claim 1, The rotating case has an inner rail and an outer rail connected to each other at the front thereof, The display driving unit is coupled to the fixed shaft so as to be located along the inner rail and the outer rail, and in front of the rotating case to prevent the ball from falling off and form a groove for the movement of the ball The scroll-type flexible display device further comprises a front case for allowing the ball to move only along the inner and outer rails. The method according to claim 5, Roll-type flexible display, characterized in that the stop between the inner rail and the outer rail to prevent the ball from proceeding further in the direction to move in, and to allow the ball to proceed in the exit direction Device. Claims 1 to 3, claim 5, claim 6, wherein the roll-type flexible display device of any one of the personal portable information terminal, characterized in that the personal portable information terminal. A conventional personal portable information terminal device having an information transmitter on one or both sides, And a scroll type flexible display device according to any one of claims 1 to 3, 5, and 6, wherein an information receiving unit connected to the information transmitting unit is formed on one side and is detachable from the personal portable information terminal device. Personal digital assistants.

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