JPH1173262A - Input/output device and display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the input/output device with good visibility which allows input and output on both its top and reverse surfaces and allows two screens to be used in a spread state by inserting a detecting means which has flexible display means provided on both its top and reverse surfaces and detects a position on a display screen corresponding to depression on each of the top and reverse surfaces from a vision side. SOLUTION: The input/output device 1 consists of two flexible liquid crystal display panels 2 and 3 arranged on both the top and reverse surfaces and one input means arranged integrally between the liquid crystal display panels 2 and 3, and detects the position pressed with a pen 5, a finger, etc., from the vision sides of the liquid crystal display panels 2 and 3. With the depression on the top display screen from the vision side, the display panels 2 and 3 bend to transmit the depressing force to the detecting means, which detects the position on the display screen corresponding to the depression. At the same time, the same detecting means is able detect the position of depression on the reverse display screen from the vision side and there is a touch panel or the like on the display screen, so the input/output device 1 is stood upright to enable interactive input and output.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an input / output device which can be used for electronic devices such as a handy terminal device and a portable information communication device, and more particularly to an input device such as a touch panel and a liquid crystal display panel. The present invention relates to an input / output device having a display device and capable of providing a specific virtual switch, a keyboard, a handwriting input area, and the like at a display portion linked to an image. Further, the present invention also relates to an input / output device widely used in electronic devices such as a handy terminal device and a portable information communication device, in particular, an input / output device having a data input device on the back of a flexible image display panel. The present invention relates to an input / output device and a display device as an image display system that can be used in combination.

[0002]

2. Description of the Related Art Conventionally, an input / output device in which an input device such as a touch panel and a display device such as a liquid crystal display panel are combined has been used as a control panel of a copying machine for industrial use and for a consumer use. Electronic organizer and PDA
(Portable DataAssistants)
It is widely used in portable information terminal devices referred to as such.

Techniques relating to such an input / output device include, for example, Japanese Utility Model Laid-Open No. Sho 62-139025, Japanese Utility Model Laid-Open No. 3-124542, Japanese Patent Laid-Open No. Hei 6-332602, and Japanese Patent Laid-Open No. Sho 63-247819. Has already been proposed.

The operation panel switch according to Japanese Utility Model Laid-Open Publication No. Sho 62-139025 is an operation panel switch for performing a large number of displays, and a membrane switch having a plurality of transparent electrodes is arranged on the upper surface of a dot matrix liquid crystal display element. It is configured as follows.

In the switch mechanism using the liquid crystal display panel according to Japanese Utility Model Laid-Open No. 3-124542, a switch mechanism for controlling various functions of an electronic device displays a group of symbols representing various functions of the electronic device. A liquid crystal display panel, a memory unit for storing a symbol group for a plurality of screens, a transparent pressure-sensitive sensor provided on the front surface of the liquid crystal panel and switched to a function corresponding to the displayed symbol group, An interface for switching the function of the pressure sensor and a backlight for illuminating the liquid crystal display panel from the back are provided.

Further, the information processing apparatus according to the above-mentioned Japanese Patent Application Laid-Open No. 6-332602 includes a liquid crystal display for displaying various information, a pressure-sensitive touch panel stretched on the front of the liquid crystal display, and It is displayed, and at the time of display, a software keyboard that receives the coordinate position input on the display from the pressure-sensitive touch panel, and a key on the upper surface in accordance with the key arrangement of the software keyboard that is placed or removed on the front of the software keyboard. A button-shaped projection is provided, and a keyboard input auxiliary unit with a projection is provided on the surface of the projection, which displays characters corresponding to the key character arrangement of the software keyboard by printing or the like.

On the other hand, a touch panel input / output device according to the above-mentioned Japanese Patent Application Laid-Open No. 63-247819 has a display device in which a display screen is formed as a group of a large number of character areas, and a matrix-like display provided on the screen. Wherein the size of one section area for detecting one coordinate is substantially equal to the section of the character area, and the display pitch of the character area of the display device and the size of the section area of the digital touch switch are different. In a touch panel input / output device having a digital touch switch having substantially the same detection pitch, a partition area of the digital touch switch is overlapped with a character area of the display apparatus by being shifted by a half pitch in each of the X direction and the Y direction. It is configured to be arranged.

[0008]

However, the above-mentioned prior art has the following problems. That is, in the above-described conventional input / output device, since a pressure-sensitive sensor such as a touch panel is arranged on the liquid crystal display element, an image of the liquid crystal display element is viewed through a pressure-sensitive sensor having a low transmittance. Therefore, the contrast of the display element is reduced, and the image is difficult to see, and the touch panel and the liquid crystal display panel are formed of a glass substrate.
When a touch panel or the like is pressed with too much force, there is a problem that a glass substrate such as a touch panel or a liquid crystal display panel may be broken.

The display area of the above-mentioned conventional input / output device is limited to one screen. When taking a memo or the like at a meeting or the like, the user can add or input while looking at other information. However, there is also a problem that this is not possible because the screen is narrow. In addition, when the input / output device is made to have a large screen in consideration of such a problem, a new problem arises in that the entire device becomes large and it becomes inconvenient to carry.

Therefore, as a technique capable of solving such a problem, for example, JP-A-1-102624, JP-A-2-254420, or JP-A-4-355
No. 786 has already been proposed.

FIG. 30 shows the configuration of an information input / output device according to the above-mentioned Japanese Patent Application Laid-Open No. 1-102424. The information input / output device 200 includes a liquid crystal display 20 formed of a glass substrate.
1. Ultrasonic pen for input 202, input surface discriminating switch 203, and input device further include an ultrasonic transmission plate and a vibration detection sensor (not shown in the figure) which are also used by a liquid crystal display device such as a glass substrate. CPU circuit (not shown)
In this configuration, the position coordinates are sensed by a signal from the vibration detection sensor, and the writing information at the pressed position is displayed on the liquid crystal display.

To explain further, the above-mentioned Japanese Patent Laid-Open Publication No.
The information input / output device according to Japanese Patent Publication No. 24 is composed of information input / output means in which display means visible from both front and back surfaces, transparent coordinate input means capable of inputting from both front and back surfaces are laminated and integrated, and the information input / output means Means for detecting whether one of the front and back surfaces is used for display or coordinate input, and inverts data input / output by the display means or coordinate input means in accordance with the output of the detection means, and The display and the coordinate input are performed from both the front and back surfaces of the output means.

Further, as disclosed in the above-mentioned JP-A-2-254420 and JP-A-4-355786, there is also an image display system in which a plurality of image display panels are combined so as to be handled like a book. Has already been proposed. Among the techniques disclosed in these publications, as a method of connecting a plurality of image display panels, for example, as disclosed in JP-A-4-355786,
As shown in FIGS. 31 and 32, a connector 211 is arranged at a portion corresponding to a hinge of a book 210, and
There is a configuration in which a connection portion 213 of an image display panel 212 is inserted into a plurality 1 and a plurality of sets of the connectors 212 are arranged.

However, the above-mentioned Japanese Patent Laid-Open No. 1-10
In the case of the information input / output device according to No. 2624, an input device and a display device are also used by using an ultrasonic vibration pen or the like,
Although input is performed on both sides, there is a problem that even in this case, there is only one front and back screen and the amount of information cannot be increased. It is also possible to arrange two or more input / output devices. In this case,
A new problem arises in that waste is increased due to cost and the like.

Further, in the case of the latter technology disclosed in JP-A-2-254420 and JP-A-4-355786, it is possible to handle it like a book. In the spread state, the image displayed on each image display panel is
As shown in FIG. 28, they are independent.
Although the form is like a book, the display image is no different from the conventional image display device. In other words, these image display systems are merely a combination of independent image display devices, and even if they are implemented, the effects of the system cannot be sufficiently exhibited, and the display of the display device in a state where images are continuous is performed. There was a problem that the area could not be set wide.

Then, the present inventors have studied the input / output device, and as a result, have reached the present invention.

Further, the present inventors have solved the problems of the prior art, and as a result of intensive research on an image display system such as a book, as a result, have found a new connection method between the respective image display panels. Reached.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an input / output device with high visibility which can input / output data on both front and back sides to increase the amount of information and which can be used with two screens. .

Further, an object of the present invention is to provide an image display panel and an input device on the back surface thereof, a plurality of these devices being combined, and an input / output device usable as an image display / data input system that can be handled like a notebook or a book. Is to provide. It is still another object of the present invention to provide a display device which can be used for such an input / output device and which can substantially expand a display area.

[0020]

According to a first aspect of the present invention, there is provided an input / output device, wherein a display means for displaying information on a flexible display screen is visually recognized on both front and back surfaces. A detection means for detecting a position on the display screen corresponding to the pressing by pressing the front and back surfaces from the viewing side, between the display means, provided on both the front and back sides so that the sides are opposite to each other. It is.

With such a configuration, the display means bends and transmits the pressing force to the detecting means by the pressing of the one side (front surface) of the display screen from the viewing side, and the position on the display screen corresponding to the pressing is detected. At the same time, by pressing from the viewing side of the other (back side) display screen, the same detecting means can detect a position on the display screen corresponding to the pressing. Therefore, both-sided access can be realized with a simple configuration and thinner, and since there is no touch panel on the display screen, input / output is performed with good visibility while maintaining good operability integrated with the input / output. be able to.
For example, an input / output device can be set up and face-to-face interactive input / output can be performed.

In the input / output device according to the second aspect of the present invention, the display means for displaying information on the flexible display screen is arranged such that the viewing sides of the front and back sides are opposite to each other. Provided on both sides, between these display means, provided with a plurality of sheet-like input / output units inserted detection means for detecting the position on the display screen corresponding to the press by pressing from the viewing side of each display screen, The ends of the input / output unit are connected by a connection unit so as to be able to spread.

According to such a configuration, two or more screens can be input / output in a double-page spread while taking advantage of the excellent features (characteristics) of the first invention, so that visibility and portability are good, and visibility and operability are improved. At the same time, it can be used in various ways in combination with information systems, as well as in notebooks and books. For example, model information can be taken from the information system and displayed on the left display screen, and can be used as an example to practice with input on the right display screen.

According to a third aspect of the present invention, there is provided the input / output device, wherein the display means displays information on a flexible display screen, and the display means is provided below the display means to display the information. A plurality of sheet-like input / output units each including a detection unit that detects a position on the display screen corresponding to the pressing by the pressing from the viewing side are provided, and the ends of the input / output units are connected with the connecting unit so as to be able to spread. Things.

With such a configuration, two or more screens can be output with a spread, etc., on the input / output unit of the single-sided display screen.
It has good portability and improves browsability and operability, and can be used in various ways in combination with information systems, as well as in notebooks and books. In addition to this,
Since it is one-sided, the device can be made thinner and lighter than in the case of two-sided.

According to a fourth aspect of the present invention, there is provided an input / output device, comprising: a display unit for displaying information on a flexible display screen; and a display unit provided below the display unit. A sheet-like input / output unit including a detection unit that detects a position on the display screen corresponding to the pressing by the pressing from the viewing side is provided on both the front and back surfaces such that the viewing sides of the display screen are in opposite directions. Things.

With such a configuration, double-sided access can be realized in the same manner as in the first aspect of the invention, except that access from both sides is detected by a different detecting means at a position on the display screen corresponding to pressing. Therefore, double-sided access can be realized with a simple configuration and relatively thin, and since there is no touch panel-like thing on the display screen, input / output with good visibility is maintained while maintaining good operability of the integrated input / output. It can be performed. In addition, since each display unit has a detection unit independently, access from both sides can be performed simultaneously. For example, input / output can be performed interactively or simultaneously with the input / output device standing up. In addition, when the two detecting means perform simultaneous input on both sides, it is necessary to provide a buffer layer between the detecting means so that the two detecting means do not interfere with each other.

According to a fifth aspect of the present invention, there is provided an input / output device, wherein display means for displaying information on a flexible display screen is provided below the display means. A sheet-like single-sided input / output unit having detection means for detecting a position on the display screen corresponding to the pressing by the pressing from the viewing side is provided on both the front and back surfaces such that the viewing side of the display screen is in the opposite direction to each other. Equipped with multiple sheet-like input / output units,
The end of the input / output unit is connected to the connection unit so as to be able to spread.

With this configuration, two or more spread pages can be input and output while taking advantage of the excellent features (characteristics) of the fourth aspect of the invention, so that visibility, portability, and visibility and operability are improved. At the same time, it can be used in various ways in combination with information systems, as well as in notebooks and books.

Preferably, in the first and fourth aspects,
The display means is driven in a matrix by a segment electrode and a common electrode, and upper and lower display means are formed continuously and integrally and connected to a common electrode of each display means. As a result, the circuit configuration can be made simple, light, thin, and small.

Preferably, in the fourth invention, the detecting means is detected by a matrix of a segment electrode and a common electrode, and upper and lower detecting means are formed continuously and integrally, and a common It is formed by connecting electrodes. As a result, the circuit configuration can be made simple, light, thin, and small.

Preferably, in the second, third and fifth inventions, the adjacent detecting means are formed continuously and integrally,
The intermediate part is used as the connection part.
Thereby, the structure of the connection portion can be made strong and thin, and the reliability as the input / output device can be improved.

Preferably, in the second, third, and fifth inventions, the adjacent display means are continuously and integrally formed,
The intermediate part is used as the connection part.
Thereby, the structure of the connection portion can be made strong and thin, and the reliability as the input / output device can be improved. More preferably, the display means is driven by a matrix of segment electrodes and common electrodes, and is formed by connecting the respective common electrodes of the display means. As a result, the circuit configuration can be simplified, and can be made lighter, thinner, and smaller.

Preferably, in the second, third, fifth, and tenth aspects, the display means is driven by a matrix of segment electrodes and a common electrode, and the common electrode of the plurality of display means is connected to the display. The driving means for driving is shared and provided in the connection section. As a result, the circuit configuration can be simplified and further reduced in size and weight, and the structure of the connection portion can be made strong and thin, so that the reliability of the input / output device can be improved.

The display device of the sixth invention (the invention according to claim 12) includes a plurality of sheet-like display means for displaying information on a flexible display screen, and each of the display means should be connected at least. The irregularities are formed in a rectangular wave shape on one side, and the irregularities are fitted to each other.

With such a configuration, the display screens of the fitted display means, that is, the effective display areas can be made extremely close to each other, and the display means can be fitted and combined according to the required display area area. Thus, the display screen can be substantially enlarged or reduced, so that not only a large screen can be realized at relatively low cost, but also an optimum display screen can be realized without waste according to the installation space. The shape of the display screen of the display means is typically rectangular,
If the uneven portions are provided on all four sides, it can be expanded in four directions, and if provided on the two sides, it can be expanded vertically or horizontally. If it is one side (or two sides), it can be applied to a spread type display device, and this is applied to an input / output device in an input / output device of a seventh invention described later. The present invention can be applied not only to a quadrangle but also to other polygons.

Preferably, in the sixth invention, the projections of the concave and convex portions are electrically connected to a mounting portion on which a driving circuit for driving the display means is mounted and an electrode portion of the display means from which a display electrode is drawn out. It is configured to be connected to each other. Thereby, the mounting portion and the electrode portion of the uneven portion can be easily and reliably connected between the electrodes of the mounting portion and the electrode portion with, for example, an anisotropic conductive sheet, and the structure of the convex portion of the uneven portion is strongly strengthened. By reducing the thickness, reliability as a display device can be improved.

In the input / output device according to a seventh aspect of the present invention, the display means for displaying information on a flexible display screen is provided below the display screen. A pair of sheet-like input / output units each including a detection unit that detects a position on the display screen corresponding to the pressing by a pressing from the viewing side, and at least one side of each input / output unit to be connected is formed into a rectangular wave shape. The input / output portion is made openable by forming a portion and fitting the concave and convex portions to each other.

With such a configuration, the display screens of the display means of the fitted input / output unit, that is, the effective display areas can be made extremely close to each other, and the double-sided display screen is substantially doubled. Can be treated as a display screen. Therefore, not only the display screen becomes large, but also the input area becomes large, and the visibility and operability are improved without losing the visibility and portability. Of course, it can be used in various ways in combination with the information system.

The display means used in the first to seventh inventions include a liquid crystal display such as a ferroelectric liquid crystal display, a spherical rotating display element (for example, see US Pat. No. 4,143,103), and an EL panel (for example, For example, a membrane switch (for a simple example of the structure, see Japanese Patent No. 25567).
Any type of pressure-sensitive detection means capable of detecting a position by receiving a pressing force such as that described in Japanese Patent Application Laid-Open No. 11-111 can be used.

[0041]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings.

Embodiment 1 FIG. 1 shows an embodiment of an input / output device according to the present invention.

The input / output device 1 according to the first embodiment includes:
As shown in FIG. 1, two liquid crystal display panels 2, which are roughly divided into display elements arranged on both front and rear surfaces, respectively,
3 and one input means 4 integrally disposed between the liquid crystal display panels 2 and 3 on both sides.

The liquid crystal display panels 2, 3 arranged on both the front and back sides are composed of reflective liquid crystal display panels, and are formed in a flexible sheet shape. The liquid crystal display panels 2 and 3 have the same configuration as shown in FIG. 2. One of the liquid crystal display panels 2 will be described. A pair of polarizing plates (for example, NPF120 manufactured by Nitto Denko Corporation)
5DU, NPF3205S, etc.) 21 and 21 are arranged, and these pair of polarizing plates 21 and 21 are arranged.
Need not be directly laminated on the liquid crystal display unit 20,
Another layer or a plate-like member may be interposed between the pair of polarizing plates 21 and 21 and the liquid crystal display unit 20. As shown in FIG. 2, the liquid crystal display section 20 of the liquid crystal display panel 2 is made of a pair of PES (polyether sulfone) in which ITO electrodes 22 as transparent electrodes are linearly deposited at a predetermined pitch. The liquid crystal 24 is laminated between the sheets 23, 23. Further, polarizing plates 21 are arranged outside the pair of PES sheets 23. The pair of P
The ITO electrodes 22 respectively deposited on the ES sheets 23, 23 are linearly arranged at a predetermined pitch so as to be orthogonal to each other, so that the upper electrode 22 and the lower electrode 22 form a matrix. Has become. Further, as the liquid crystal 24 laminated between the pair of PES sheets 23, 23, for example, a ferroelectric polymer liquid crystal is used. However, the present invention is not limited to this, and other types of liquid crystal may be used. Of course, it is good.

The liquid crystal display section 2 of the liquid crystal display panels 2 and 3
As 0 and 30, for example, those whose basic configuration and operation are configured as disclosed in Japanese Patent No. 2512290 and the like are used, and more specifically, an application of Idemitsu Kosan Co., Ltd. And Japanese Patent Application Laid-Open Nos. 5-27361 and 5-27353 can be used. The liquid crystal display units 20 and 30 of these liquid crystal display panels 2 and 3 are provided, for example, with one or both of a pair of PES sheets 23 and 23 on which ITO electrodes 22 and 22 serving as transparent electrodes are deposited, by applying a ferroelectric material. After applying a liquid crystal 24 composed of a molecular liquid crystal or the like to form a film, and laminating a pair of PES sheets 23 facing each other,
It is manufactured by performing an orientation treatment by bending by passing between a plurality of rollers. Here, the liquid crystal display panels 2 and 3 using the liquid crystal 24 made of a ferroelectric polymer liquid crystal are:
Since it has a memory property, it has a characteristic that a display screen can be held even when voltage application is stopped.

On the front side of the liquid crystal display panel 2, that is, on the viewing side, between the PES sheet 23 and the polarizing plate 21 to prevent irregular reflection and the like and improve the visibility of the liquid crystal display panel 2. Layer 2 made of sheet for improving visibility
5 are arranged in a stacked state. As the buffer layer 25 made of the visibility improving sheet, for example, a material made of a gel-like resin or a rubber-like resin is used. On the surface of the buffer layer 25 made of the visibility improving sheet, a polarizing plate 47 is laminated to disclose the density of a display image based on a change in the optical anisotropy of the liquid crystal to which an electric field is applied. ing. At this time, if the refractive index of the buffer layer 25 interposed between the flexible liquid crystal display section 20 and the polarizing plate 21 is significantly different from that of other members, external light is reflected, and the The display quality of panel 2 is degraded. Therefore, as the buffer layer 25 made of the visibility improving sheet, the refractive index of air is 1.0, whereas the refractive index of the synthetic resin forming the ferroelectric liquid crystal 24 and the polarizing plate 21 is 1 Since the refractive index of the transparent buffer layer 25 is about 1.4, the refractive index of the gel-like resin or rubber-like resin is optimally about 1.4.

As a material suitable for this, for example, a visibility improving sheet manufactured by Nitto Denko Corporation has a refractive index of 1.46. Therefore, as the buffer layer 25, for example, a Nitto having a thickness of 400 μm having tackiness is used. A visibility improving sheet manufactured by Denko Corporation is used.
And the polarizing plate 21 are interposed while being adhered and held by the adhesiveness. As the visibility improving sheet used as the buffer layer 25, for example, a sheet made of a gel resin such as an acrylic polymer or a rubber resin such as a silicone resin polymer is used.

On the back side of the liquid crystal display unit 20,
The polarizing plate 21 is directly laminated and arranged without any member, and the polarizing plate 21 on the back side is arranged so as to be orthogonal to the polarizing plate 21 arranged on the front side of the liquid crystal display panel 2. I have. Further, the liquid crystal display panel 2
A reflection plate 26 for reflecting light incident from the front side of the liquid crystal display panel 2 is provided below the polarizing plate 21 disposed on the back side of the liquid crystal display panel 2.
Are stacked. As the reflection plate 26, for example, an aluminum foil or the like is used. Further, a support plate 27 for reinforcing the pressing force of the liquid crystal display panel 2 and improving the resolution of the membrane switch 4 described later is disposed below the reflection plate 26. As the support plate 27, for example, a polycarbonate plate having a thickness of 0.5 mm is used.

Further, on the back side of the support plate 27, a membrane switch 4 as a coordinate detecting means for detecting the coordinates of the position pressed by a finger or a pen from the front side of the liquid crystal display panel 2 is arranged. ing. As shown in FIG. 3, the membrane switch 4 includes a pair of switch sheets 42 and 42 each having a predetermined pitch along the vertical and horizontal directions, respectively, as shown in FIG. And a spacer sheet 45 in which a region 44 corresponding to the switch portion 43 of the electrode pattern 41 is cut out in a circular or rectangular shape. The membrane switch 4 is pressed by the switch sheets 42, 42 in a region pressed by a pen, a finger, or the like bend, and the switch units 43 on which the pair of switch sheets 42, 42 are formed come into contact with each other. A device that detects the coordinates of a position is used (Japanese Patent No. 2556711).

However, the membrane switch 4 is not limited to this, and is disclosed in
668, JP-A-8-258147, JP-A-8-241647, or Japanese Patent No. 253065.
Various types disclosed in Japanese Unexamined Patent Application Publication No. 1-No. 1 can be used, and the types are not limited.

As the membrane switch 4, a resistance layer formed in the same shape is interposed between a pair of conductive substrates formed in a rectangular shape, and the membrane switch 4 is formed in the vertical and horizontal directions of the conductive substrate. By providing a grid electrode for detection at the end in the direction, when a part of the conductive substrate is pressed,
Since the resistance value between the detection grid electrodes provided at the end portions in the vertical direction and the horizontal direction changes, the resistance value between the detection grid electrodes located in the vertical direction and the horizontal direction is detected. Alternatively, an analog type device configured to detect the coordinates of a position pressed by a finger or the like may be used. In this case, characters and the like can be easily input. Such an analog type may be used, and the present invention is not limited to this type, and any type may be used as long as the position on the display screen can be detected by sensing the pressure in response to pressing from the viewing side of the display screen.

On the surface of the membrane switch 4, as shown in FIG. 2, if necessary, a protrusion made of a silicon resin having a height of about 0.5 mm in a direction facing the liquid crystal display panels 2, 3. 28 are provided.

As described above, in the above-described embodiment, for example, two flexible image displays whose substrates are made of a transparent resin or the like and a switch such as a membrane switch or a touch panel or a pressure-sensitive switch are provided between the two display devices. It is configured to dispose a substrate.

Further, as a specific configuration, an image display and a membrane switch or a touch panel that presses input information or the like displayed on the image display with a finger or the like and converts the pressing pressure into on / off of an electric signal or a touch panel Switch board such as pressure switch, C for controlling switches and images
It consists of a PU substrate, a plastic panel part and the like.

FIG. 4 shows an input / output device 1 configured as described above.
3 shows the wiring to the control board.

In FIG. 4, reference numeral 2 denotes a liquid crystal display panel on the front side, and one membrane switch 4 is arranged below the liquid crystal display panel 2 in a stacked state. The wiring of the liquid crystal display panel 2 on the front side is connected to the flexible substrate 55 by the ITO electrode 22 of the liquid crystal display panel 2.
The driver IC 56 for STN liquid crystal, which applies a predetermined driving voltage through the TAB (Tape Automate),
d Bonding) TCP (Tape Car)
rier Package) 57 and this TCP 57
Are connected to the ITO electrodes 22 of the transparent resin sheet 23 of the liquid crystal display panel 2 by ACF (anisotropic conductive adhesive sheet) 58 by thermocompression bonding. The TCP 57 is connected to a printed circuit board 59.

As shown in FIG. 4, the liquid crystal display panel 3 located on the back side also has a driver IC 56 for STN liquid crystal, similar to the liquid crystal display panel 2 located on the front side.
And a thermocompression connection by an ACF 58 via a TCP 57 formed into a TAB.

FIG. 5 is a block diagram showing a control circuit of the input / output device configured as described above.

In FIG. 5, reference numeral 60 denotes a CPU for controlling the input / output device. The membrane switch 4 formed in a matrices of the input / output device 1 has an X
The electrode patterns 41 arranged at a predetermined pitch in one direction or the Y direction are scanned by a scan output output from the CPU 60 via the buffer circuit 61, and are arranged at a predetermined pitch in another direction. The output signal from the electrode pattern 41 is input to the CPU 60 via the driver circuit 62, and the CPU 60 calculates the coordinates of the position pressed by a pen, a finger, or the like from the viewing side of the liquid crystal display panels 2, 3 on both the front and back sides. It is configured to detect.

The CPU 60 displays a display screen based on the input information on the liquid crystal display units 20 and 30 of the liquid crystal display panels 2 and 3 on both sides. That is, the CPU 6
Numeral 0 performs drawing processing on each of the liquid crystal display units 20 and 30 via the driver circuit 63 based on configuration data of a screen to be displayed (hereinafter, referred to as frame data).

In the above configuration, the input / output device according to the first embodiment is capable of inputting and outputting data on both front and back sides in order to increase the amount of information as follows.

That is, as shown in FIG. 1, the input / output device 1 according to the first embodiment has a single-sided liquid crystal display panel 2.
When the information is displayed on the liquid crystal display panel 2 or a predetermined position is pressed by the stylus pen 5 on the information displayed on the liquid crystal display panel 2 with the mouse up, Thus, it is possible to select displayed information, add information, and the like. Also, while viewing the image displayed on the liquid crystal display panel 2 provided on one side of the input / output device 1, the input / output device 1 is turned upside down to display necessary information on the other liquid crystal display panel 3, The information displayed on the other liquid crystal display panel 3 can be selected, the information can be additionally written, and the like.

As described above, in the input / output device 1 according to the sixth embodiment, desired information can be displayed on the liquid crystal display panels 2 and 3 provided on the front and back surfaces, respectively.
Based on the information displayed on the liquid crystal display panels 2 and 3, desired information can be input using input means including the membrane switch 4, and input and output can be performed on both front and back sides to increase the amount of information. ing.

According to the above-described embodiment, it is possible to input and output information twice as much as before and to reduce the cost while keeping the size small.

Second Embodiment FIG. 6 shows a second embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals. Display means for displaying information on a flexible display screen, and input means provided below the display screen and detecting a pressed position on the display screen by pressing from a viewing side of the display means. A plurality of sheet-like input / output units are provided, and the plurality of sheet-like input / output units are connected to each other via a connection unit that can be opened and folded.

That is, the input / output device 1 according to the second embodiment is roughly divided as shown in FIGS.
A first sheet-like input / output unit 70 in which a liquid crystal display panel 2 as a display element and a membrane switch 4 as input means are arranged in a stacked state; a liquid crystal display panel 3 as a display element and a membrane as input means Switch 4
Sheet-like input / output unit 71 in which
Are connected so as to be able to open and fold freely through a connection portion 72. Although the first input / output unit 70 and the second input / output unit 71 have the same configuration as shown in FIG. 8, the first input / output unit 70 and the second input / output unit 71 As shown in FIG. 11, the common driver ICs 56 for driving the liquid crystal display panels 2 and 3 are commonly used. In addition,
In FIG. 6, reference numeral 75 denotes a CPU board for controlling the liquid crystal display panels 2, 3 and the membrane switch 4.

The TCP 57 of the common driver IC 56 for driving the liquid crystal display panels 2 and 3 of the first input / output unit 70 and the second input / output unit 71 is, as shown in FIG. It is mounted so as to connect both the liquid crystal display panel 2 of the input / output unit 70 and the liquid crystal display panel 3 of the second input / output unit 71, and the matrix wiring (640 × 240 × 2) The segment electrode is
A common TAB (not shown here) is used, and the same liquid crystal driving driver IC 56
A TAB 57 using the method described above is used.

In the TAB 57 shown in FIG. 9, the number of connection electrodes 76 is 120, and two of them are used to make 240 electrodes. At this time, the control line of the driving driver IC 56 connects the signal line 77 to the signal line 78 of the other TAB 57, and this connection is made using solder.

The pressure-sensitive switches of the first input / output section 70 and the second input / output section 71 are constituted by so-called membrane switches 4 as shown in FIG. The switch 42 and the sheet 42 on which the wiring is formed by printing are overlapped with each other via a spacer sheet 45 so that the intersection can be operated as a switch, and the membrane switch of the first and second input / output units 70 and 71 is provided. 4 are integrally formed.
In FIG. 10, reference numeral 74 denotes a cable for extracting output signals from the two membrane switches 4.

Further, on the surface of the membrane switch 4 of the first input / output unit 70 and the second input / output unit 71, FIG.
As shown in FIG. 2, a projection 75 made of silicon resin and having a height of about 0.5 mm is provided in a direction facing the liquid crystal display panels 2 and 3. Further, the size of the membrane switch 4 can be integrally formed in accordance with the length of the liquid crystal display panels 2 and 3.

In the above configuration, the input / output device according to the second embodiment is capable of inputting / outputting data on both front and back sides in order to increase the amount of information as follows.

That is, in the input / output device 1 according to the first embodiment, as shown in FIG. 6, a desired input / output unit 70 and a second input / output unit 71 are opened in a desired state. Display information such as characters and figures on the liquid crystal display panels 2 and 3,
With respect to the information displayed on the liquid crystal display panels 2 and 3,
By pressing a predetermined position with the stylus pen 5,
It is possible to select displayed information, add information, and the like.

As described above, in the input / output device 1 according to the second embodiment, the first input / output unit 70 and the second input / output unit 7
And displaying information such as desired characters and graphics on the liquid crystal display panels 2 and 3 and performing additional writing and the like on the information displayed on the liquid crystal display panels 2 and 3 with the computer 1 and the computer 1 open. Therefore, the display area of the liquid crystal display panels 2 and 3 can be doubled. Also, the first input / output unit 7
0 and the respective liquid crystal display panels 2 and 3 of the second input / output unit 71,
Since they are arranged adjacent to each other, continuous image information and data can be displayed on both liquid crystal display panels 2 and 3. Furthermore, when carrying the input / output device 1, the first input / output unit 70 and the second input / output unit 71 can be folded so that they can be compactly formed.

Third Embodiment FIG. 12 shows a third embodiment of the present invention. The same portions as those in the first embodiment are denoted by the same reference numerals and described. Display means for displaying information on a flexible display screen is provided on each of the front and back surfaces, and between the display means located on both front and back faces, the display means is pressed on the display screen by pressing both display means from the viewing side. Are provided with a plurality of sheet-like input / output units on which input means for detecting the pressed position are arranged, and these plurality of sheet-like input / output units are configured to be connected to each other via a connection unit that can be opened and folded.

That is, as shown in FIG. 12 and FIG. 13, the input / output device 1 according to the third embodiment is roughly divided into two types of display elements arranged on the front and back surfaces.
A first input / output unit 80 including two liquid crystal display panels 2 and 3 and a membrane switch 4 as one input means disposed between the liquid crystal display panels 2 and 3 on both the front and back sides, and also on the front and back sides respectively. 2 as a display element to be arranged
A second input / output unit 81 is connected to one of the liquid crystal display panels 2 and 3 and the membrane switch 4 as one input means disposed between the liquid crystal display panels 2 and 3 on both the front and rear sides via a connection unit 82. It is configured to be connected in a book-like manner so as to be able to open and fold freely.

The first input / output unit 80 and the second input / output unit 81 are configured in the same manner as in the second embodiment.
The common driver ICs 56 for driving the liquid crystal display panels 2, 3 and 2, 3 of the first input / output unit 80 and the second input / output unit 81 are commonly used.

The TCP of the common driver IC 56 for driving the liquid crystal display panels 2 and 3 of the first input / output unit 80 and the liquid crystal display panels 2 and 3 of the second input / output unit 81
13, the liquid crystal display panels 2 and 3 of the first input / output unit 80 and the liquid crystal display panels 2 and 3 of the second input / output unit 81, as shown in FIG.
3 are connected to each other, and the matrix wiring (640 × 2
For the 40 × 2) segment electrode, a normal TAB (not shown here) is used, and a TAB using the same liquid crystal driving driver IC with the common electrode side in common is used.

The TAB of FIG. 9 described above has 120 connecting electrodes, and two sets of the connecting electrodes, each having 240 electrodes, are provided on both the front and back sides. At this time, the control line of the driving driver IC 56 connects the signal line to another signal line of TAB,
This connection is made using solder.

The pressure-sensitive switches of the first input / output section 80 and the second input / output section 81 are constituted by so-called membrane switches 4 as shown in FIG. The switch 42 and the sheet 42 on which the wiring 41 are formed are overlapped with each other via a spacer sheet 45 so that the intersection can be operated as a switch, and the membrane switches of the first and second input / output units 80 and 81 are switched. 4 are integrally formed.

Further, on the front and back surfaces of the membrane switch 4 of the first input / output unit 80 and the second input / output unit 81,
Similar to the one shown in FIG. 2, a projection made of silicon resin having a height of about 0.5 mm is provided in a direction facing the liquid crystal display panels 2 and 3. Further, the size of the membrane switch 4 can be integrally formed in accordance with the length of the liquid crystal display panel.

FIG. 14 is a block diagram showing a control circuit of the input / output device 1 configured as described above.

In FIG. 14, reference numeral 60 denotes a CPU for controlling the input / output device.
The two membrane switches 4 formed in a matrices form a scan output in which the electrode patterns 41 arranged at a predetermined pitch along one direction in the X direction or the Y direction are output from the CPU 60 via the buffer circuit 61. An output signal from the electrode patterns 41 scanned at a predetermined pitch along another direction is input to the CPU 60 via the driver circuit 62, and the CPU 60
The first input / output unit 80 or the second input / output unit 81 is configured to detect the coordinates of the position pressed by a pen, a finger, or the like from the viewing side of the liquid crystal display panels 2, 3 on both sides.

The CPU 60 displays a display screen based on the input information on the liquid crystal display units 20 and 30 of the liquid crystal display panels 2 and 3 on both sides of the display. That is, the CPU 6
Numeral 0 performs drawing processing on each of the liquid crystal display units 20 and 30 via the driver circuit 63 based on configuration data of a screen to be displayed (hereinafter, referred to as frame data).

In the above configuration, the input / output device according to the third embodiment is capable of inputting / outputting data on both front and back sides in order to increase the amount of information as follows.

That is, in the input / output device 1 according to the third embodiment, as shown in FIG. 12, desired characters or characters can be set with the first and second input / output units 80 and 81 facing up. By displaying information such as graphics on the liquid crystal display panels 2 and 2 or by pressing a predetermined position on the information displayed on the liquid crystal display panels 2 and 2 with the stylus pen 5, the displayed information is displayed. Selection, additional writing of information, and the like are possible.
Also, while viewing the images displayed on the two liquid crystal display panels 2 and 2 provided on one side of the input / output device 1, the input / output device 1 is turned over and the other liquid crystal display panels 3 and 3 Display information on the other liquid crystal display panels 3, 3
The user can select the information displayed in, add information, and the like.

As described above, in the input / output device 1 according to the third embodiment, the four liquid crystal display panels 2 and 3 provided on the front and back surfaces of the first and second input / output units 80 and 81 have the desired configuration. And the two membrane switches 4 of the first and second input / output units 80 and 81 based on the information displayed on the liquid crystal display panels 2 and 3.
Desired information can be input by using the input means consisting of, the amount of information can be greatly increased, and input and output can be performed on both front and back surfaces of the first and second input / output units 80 and 81. ing. Also, the input / output device 1 according to the third embodiment.
Then, when a display screen having such a large area is not required, the size can be reduced to half by folding the first and second input / output units 80 and 81 via the connection unit 82. Based on the information displayed on one liquid crystal display panel 2 or the like, the input / output section of desired information can be performed using the membrane switch 4, and the compactness is also satisfied.

As a modification of the present invention, a pressure-sensitive resistive tablet switch or the like can be used in place of the membrane switch. Also, the TAB connecting the two screens is an FPC that is not a tape carrier type.
Can also be configured. This TAB is FPC
(Flexible Printed Circuit
The bent portion can be realized by combining t) with COB (chip on board).

Fourth Embodiment FIG. 15 shows a fourth embodiment of the present invention. The same parts as those of the above embodiment are denoted by the same reference numerals and described. The input / output device includes a display unit that displays information on a flexible display screen, and detects a pressed position on the display screen by pressing the display unit below the display screen from a viewing side of the display unit. A plurality of sheet-like input / output units comprising input means are provided, and a plurality of connection unevenness portions are provided on corresponding sides of the plurality of sheet-like input / output units, and a plurality of sheet-like input / output portions are provided through the connection unevenness portions. The output units are configured to be joined to each other.

More specifically, in this embodiment,
For example, in a flexible display panel, for example, an input / output device having a data input device on the back surface of a liquid crystal display panel, as shown in the schematic diagram of FIG. 15, the mounting portion of the driving IC is extended from the panel display surface, As shown in FIG. 16, the IC mounting portion of the other input / output panel, which is alternately arranged, is engaged with and joined to the IC mounting portion, so that the IC mounting portion is disposed below the panel surfaces of the two. It is configured to connect a sheet-like input / output unit as a data input panel.

That is, as shown in FIG. 15, the input / output device 1 according to Embodiment 4 of the present invention is configured such that two sheet-like input / output units 90 and 91 can be combined with each other. At opposite ends of the two sheet-like input / output units 90 and 91, portions 92 and 93 to which a liquid crystal driving driver IC 56 for driving the liquid crystal display panel 2 of the input / output device 1 are attached are rectangular. And the two sheet-shaped input / output portions 90 and 91 are formed.
The rectangular portions 92 and 93 formed at the opposite end portions are arranged so as to be alternately positioned.

The sheet-like input / output units 90 and 91 correspond to FIG.
7, a driver IC for driving ITO electrodes 22 formed in the lateral direction of the liquid crystal display panels 2 and 3
The driving driver ICs 56 ₁ , 56 ₃ , 56 of the sheet-like input / output units 90, 91 are arranged alternately on the left and right sides at every predetermined number of lines.
_{5 and the} like are arranged so as to protrude in a rectangular shape. Also, a driving driver IC 5 disposed at the opposite end
As shown in FIG. 17, 6 is arranged so as not to protrude from the end of the liquid crystal display panel 2.

Each of the sheet-like input / output units 90, 91
As shown in FIG. 17, drive driver ICs 56 for driving the ITO electrodes 22 arranged in the vertical direction are alternately arranged on the upper and lower sides every predetermined number of lines. 91 driver IC 56 for driving
Are arranged so as not to protrude from the upper and lower ends of the liquid crystal display panel 2.

In the fifth embodiment, a description will be given using flexible liquid crystal display panels 2 and 3 as display elements.
In FIG. 18, reference numerals 2 and 3 denote liquid crystal display panels, 92 and 93.
Is a connection portion between the ITO electrode 22 of the liquid crystal display panels 2 and 3 and the driving driver IC 56 which is projected in a rectangular shape;
Reference numeral 94 denotes a sealing portion of the liquid crystal display unit 20 of the liquid crystal display panels 2 and 3, 95 denotes an IC mounting substrate made of, for example, TCP, 56 denotes a driving IC of the liquid crystal display panels 2 and 3, and 96 denotes an output from the driving IC And 97 is a drive signal wiring of the drive IC 56.
The driving signal of the driving IC 56 passes through the through hole 98 and is connected to the driving signal wiring 97 by the back wiring. The connection between the liquid crystal display panels 2 and 3 and the IC mounting portions 92 and 93 is made by connecting the IC mounting substrate as shown in FIG. 95. The drive electrodes I and the ITO electrodes 22 of the liquid crystal display panels 2 and 3
The output 96 of C56 is connected by a connecting member such as an anisotropic conductive seal 58.

FIG. 20 and FIG. 21 show the rectangular I shown in FIG.
3 shows a configuration of a connection portion between the C mounting portions 92 and 93 and an IC located on the opposite side. 20, 2 and 3 are liquid crystal display panels,
100 is a seal portion of the liquid crystal 23 of the liquid crystal display panels 2 and 3;
101 is an IC mounting substrate made of, for example, TCP, 56 is a driving IC of the liquid crystal display panels 2 and 3, and 102 is
Is a driving signal wiring of the driving IC 56. Driving IC5
The drive signal of No. 6 is connected to the drive signal wiring 102 through the through hole 103. The connection between the liquid crystal display panels 2 and 3 and the IC mounting substrate 101 is made by arranging the liquid crystal display panels 2 and 3 on the near side in the drawing as in the case of the rectangular IC mounting portion 92 in FIG. Then, it is performed by overlapping with the IC mounting substrate 101. Similarly, the ITO electrodes 22 of the liquid crystal display panels 2 and 3 and the output of the driving IC 56 are connected to a connecting member such as an anisotropic conductive seal 58.
Connected by

In FIGS. 19 and 21, the liquid crystal display panels 2 and 3 and the IC mounting substrates 95 and 101 are shown in a perspective view, and are omitted. A reflector and a data input membrane switch 4 are arranged on the back of the image display unit. Further, depending on the strength of the liquid crystal display panels 2 and 3, a support plate is also provided as necessary.

FIGS. 22 and 23 show a state where two sheet-like input / output units 90 and 91 shown in FIGS. 18 to 21 are combined. FIG. 22 is an overall view when two sheets are closed and a sectional view thereof, and FIG.
FIG. 2 is an overall view of the case where the spreadsheets 0 and 91 are in a spread state and a sectional view thereof.

As shown in FIG. 24, the input / output device 1 has a rear surface of the two sheet-shaped input / output sections 90 and 91 in order to prevent the joint between the two sheet-shaped input / output sections 90 and 91 from breaking. By integrally providing the cover 120 made of synthetic resin on the side, the reliability can be improved and the terminal connection of the sheet-like input / output units 90 and 91 can be ensured. The bent portion 120a of the synthetic resin cover 120 can prevent a force from acting on the rectangular IC mounting portions 92, 93 of the sheet-like input / output portions 90, 91.

As shown in FIG. 25, the terminals of the input / output device 1 are connected to two sheet-like input / output units 90 and 91.
Between these two sheet-like input / output units 90, 9
This is performed by bringing the first terminals 121 and 122 into contact with each other to make them conductive, transmitting a detection signal of the position coordinates of the membrane switch 4 to the adjacent sheet-like input / output units 90 and 91 and finally performing signal processing such as a CPU circuit. The circuit is configured so that position information can be obtained.

As shown in FIGS. 26 and 27, the terminal connecting portions of the two sheet-like input / output portions 90 and 91 are connected to the rectangular IC mounting portions 92 and 9 of the sheet-like input / output portions 90 and 91, respectively.
3, a terminal 121 connected to the electrode pattern 41 of the switch sheet 42 of the membrane switch 4 via the insulating layer 123 is provided, and the rectangular IC mounting section 92 of the sheet-like input / output sections 90 and 91 is provided. , 93 and a terminal 122 connected to the electrode pattern 41 of the switch sheet 42 of the membrane switch 4 is provided at a portion facing the combination. Then, the rectangular IC mounting section 9 of one of the sheet-like input / output sections 90 and 91 is provided.
By connecting the terminal 121 provided at the front end of the second sheet-shaped input / output unit 93 with the terminal 122 provided at the opposing portion of the other sheet-shaped input / output unit 90, 91, the adjacent sheet-shaped input / output unit 90 , 91 can be transmitted to the adjacent sheet-like input / output units 90, 91.

In the above configuration, the input / output device according to the fourth embodiment includes an image display panel and input means on the back surface thereof as follows, and a plurality of these can be combined and treated as if it were a book. It can be used as an image display / data input system.

That is, in the input / output device 1 according to the fourth embodiment, two sheet-like input / output units 90 and 91 are provided.
As shown in FIG. 22, they are arranged in a folded state so that they face each other in a closed state. At this time, the mounting portions 92 and 93 of the driving IC 56 projecting in a rectangular shape are
Since they are alternately arranged, the ITO electrodes 22 of the liquid crystal display panels 2, 3 connected to the mounting substrates (TCP) 95, 95 of the driving IC 56 can be closed without being bent.

Next, referring to FIG. 23, a description will be given of a case where the two sheet-like input / output units 90 and 91 are used in a two-page spread state. In the facing state, the rectangular overhang 9
Due to the effect of mounting the drive IC 56 on 2, 93,
In the two sheet-like input / output units 90 and 91, only the sealing portion 94 of the liquid crystal 24 of the liquid crystal display panels 2 and 3 appears, and the space between them becomes dense. Can be used as continuous display screens, and it is also possible to display one image over the two liquid crystal display panels 2 and 3. At this time, the driving IC
56 mounting substrates 95, 101 and the liquid crystal display panel 2,
The third ITO electrode 22 is bent as shown in FIG. 23 due to the thickness of the sheet-like input / output units 90 and 91. However, as a result of our trial production, in such a bent state, the TCP was of course not affected, and the ITO electrodes 22 of the liquid crystal display panels 2 and 3 were not damaged.

According to this embodiment, an input / output device as an image display / data input system constituted by a plurality of image display / data input panels can be made as thin as a notebook or a book when closed. In the double-page spread state, it is possible to reduce the joint between the image display panels.

Fifth Embodiment FIG. 28 shows a fifth embodiment of the present invention. The same parts as those of the fourth embodiment are denoted by the same reference numerals and described. Display means for displaying information on a flexible display screen, and input means provided below the display screen and detecting a pressed position on the display screen by pressing from a viewing side of the display means. A plurality of sheet-like input / output units, and a plurality of connection irregularities are provided on four sides of the plurality of sheet-like input / output units. It is configured as follows.

FIG. 28 shows a schematic configuration of the input / output device 1 according to the fifth embodiment, and FIG. 29 shows a state diagram in which these are combined.

First, a basic form of the input / output device 1 according to this embodiment will be described with reference to FIG. 110 is a sheet-like input / output unit formed by laminating the liquid crystal display panel 2 and the membrane switch 4, and 111 is a liquid crystal 2 of the sheet-like input / output unit 110.
4 is a seal portion, 112 is a driving IC protruding in a rectangular shape.
The mounting unit 113 is a driving IC. In this example, as in the fourth embodiment, a reflection plate, a data input switch, and a reinforcing plate as necessary are arranged on the back side of the liquid crystal display panel 2. As shown in this figure, in the fifth embodiment, rectangular portions 112 on which the driving ICs 56 are mounted are arranged on all four sides.
Thus, by arranging the rectangularly protruding portions 112 for mounting the driving ICs 56 on all four sides,
As shown in FIG. 29, the input / output device 1 having an image display / data input unit of an arbitrary size with the sheet-like input / output unit 110 of FIG. It is possible to do.
Reference numeral 110 in FIG. 29 denotes each image display unit.
Further, in such a combined state, only the liquid crystal seal portions 111 of the respective image display portions 110 appear on the surface, and even if they are connected and used on a large screen, only a slight seam remains, which is sufficient. The function can be exhibited.

In each of the above embodiments, the input means for data input is arranged on the back surface. However, a similar configuration can be realized even if a data input switch or the like using a transparent electrode is arranged on the display element. Things. In the above embodiment, a flexible image display device is used for the image display surface. However, for example, a similar configuration is possible with a liquid crystal panel using a glass substrate. IC mounting board (for example, TC
The configuration may be such that only P) is bent.

According to this embodiment, it is possible to provide an input / output device capable of inputting / outputting data on both front and rear sides to increase the amount of information, and also capable of using two screens in a two-page spread. Further, according to this embodiment, the image display panel and the input device are provided on the back surface thereof, and a plurality of these are combined,
An input / output device usable as an image display / data input system that can be handled like a book can be provided. Further, according to this embodiment, since the number of components of each display element and input means can be reduced, the cost can be reduced. Further, since the display element can be brought up, display quality can be improved. Further, according to this embodiment, by combining a plurality of flexible input / output units, the image display surfaces can be closely connected when an image display system like a book is formed.

[0109]

As described in detail above, the present invention provides
Since it is based on a configuration that has detection means below the display screen,
Since the visibility is excellent and the detection means is not restricted by transparency or the like, the structure can be simplified and the device can be realized at low cost. In the input / output device of the first invention (the invention of claim 1), the display means is bent by transmitting a pressing force to the detecting means by the pressing of the one side (front surface) of the display screen from the viewing side, and the pressing force corresponds to the pressing. The position on the display screen can be detected at the same time that the position on the display screen corresponding to the pressing is detected by the same detecting means by the pressing from the viewing side of the other (back side) display screen. it can. Therefore, both-sided access can be realized with a simple configuration and thinner, and since there is no touch panel on the display screen, input / output is performed with good visibility while maintaining good operability integrated with the input / output. be able to. For example, an input / output device can be set up and face-to-face interactive input / output can be performed.

In the input / output device of the second invention (the invention of claim 2), two or more surfaces can be input / output with a spread or the like while utilizing the excellent features (characteristics) of the first invention. , With good portability and improved browsability and operability,
It can be used in various ways in combination with information systems, as well as notebooks and books. For example, model information can be taken from the information system and displayed on the left display screen, and can be used as an example to practice with input on the right display screen.

In the input / output device according to the third aspect of the present invention, the input / output unit of the single-sided display screen can output two or more screens by a double-page spread or the like.
As well as improving operability, it can be used in various ways in combination with an information system as well as a notebook or book. In addition to this, since it is one-sided, the device can be made thinner and lighter than in the case of two-sided.

The input / output device according to the fourth aspect of the present invention (the invention according to the fourth aspect) is different from the first aspect in that access from both sides is detected by a different detecting means at a position on the display screen corresponding to pressing. Double-sided access can be realized as in the invention. Therefore, double-sided access can be realized with a simple configuration and relatively thin, and since there is no touch panel-like thing on the display screen, input / output with good visibility is maintained while maintaining good operability of the integrated input / output. It can be performed. In addition, since each display unit has a detection unit independently, access from both sides can be performed simultaneously. For example, input / output can be performed interactively or simultaneously with the input / output device standing up.

In the input / output device of the fifth invention (the invention of claim 5), it is possible to input and output two or more surfaces with a spread while utilizing the excellent features (characteristics) of the fourth invention.
It has good portability and improves browsability and operability, and can be used in various ways in combination with information systems, as well as in notebooks and books.

In the display device according to the sixth aspect of the present invention, the display screens of the fitted display means, that is, the effective display areas can be extremely close to each other, and the required display area can be reduced. The display screen can be enlarged or reduced substantially by fitting and combining the display means accordingly, so that not only a large screen can be realized at a relatively low cost, but also optimal without waste according to the installation space. Display screen can be realized.

In the input / output device according to the seventh aspect of the present invention, the display screens of the display means of the fitted input / output unit, that is, the effective display areas can be extremely close to each other. Thus, the two display screens can be substantially treated as a double display screen. Therefore, not only the display screen becomes large, but also the input area becomes large, and the visibility and operability are improved without losing the visibility and portability. Of course, it can be used in various ways in combination with the information system.

[Brief description of the drawings]

FIG. 1 is an explanatory perspective view showing a use state of an input / output device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional configuration diagram illustrating a main part of the input / output device according to Embodiment 1 of the present invention;

FIG. 3 is an exploded perspective view showing a mesh switch.

FIG. 4 is a configuration diagram showing a connection state of a control circuit of the input / output device according to the first embodiment of the present invention.

FIG. 5 is a block diagram showing a control circuit of the input / output device according to Embodiment 1 of the present invention.

FIG. 6 is an explanatory perspective view of a use state showing an input / output device according to a second embodiment of the present invention.

FIG. 7 is an exploded perspective view showing an input / output device according to Embodiment 2 of the present invention.

FIG. 8 is a cross-sectional configuration diagram of a main part showing an input / output device according to Embodiment 2 of the present invention.

FIG. 9 is a plan view showing a driving IC.

FIG. 10 is a plan view showing a membrane switch used in the input / output device according to Embodiment 2 of the present invention.

FIG. 11 is an explanatory diagram showing an input / output device according to Embodiment 2 of the present invention.

FIG. 12 is a perspective view of an input / output device according to a third embodiment of the present invention in a use state.

FIGS. 13A and 13B are a cross-sectional view and a plan view taken along the line AA ′ of FIG. 13B showing the third embodiment of the input / output device according to the present invention.

FIG. 14 is a block diagram showing a control circuit of the input / output device according to Embodiment 3 of the present invention.

FIG. 15 is a plan view showing Embodiment 4 of the input / output device according to the present invention.

FIG. 16 is a perspective view showing an input / output device according to Embodiment 4 of the present invention.

FIG. 17 is a configuration diagram showing a sheet-like input / output unit according to Embodiment 4 of the present invention.

FIG. 18 is a plan view showing a disassembled state of a connection portion of the input / output device according to Embodiment 4 of the present invention.

FIG. 19 is a plan view showing an assembled state of a connection portion of the input / output device according to Embodiment 4 of the present invention.

FIG. 20 is a plan view showing an exploded state of a connection portion of the input / output device according to Embodiment 4 of the present invention.

FIG. 21 is a plan view showing an assembled state of a connection portion of the input / output device according to Embodiment 4 of the present invention.

FIG. 22 is a configuration diagram showing an input / output device according to Embodiment 4 of the present invention.

FIG. 23 is a configuration diagram showing an input / output device according to Embodiment 4 of the present invention.

FIG. 24 is a sectional view showing an input / output device according to Embodiment 5 of the present invention.

FIGS. 25A and 25B are a partial rear view and a partial cross-sectional view, respectively, showing an input / output device according to Embodiment 5 of the present invention.

FIG. 26 is a partial plan view showing an input / output device according to Embodiment 5 of the present invention.

FIGS. 27 (a) and 27 (b) respectively show A in FIG. 26;
It is a sectional view taken on line -A 'and a sectional view taken on line BB'.

FIG. 28 is a plan view showing an input / output device according to Embodiment 6 of the present invention.

FIG. 29 is a plan view showing a use state of the input / output device according to Embodiment 6 of the present invention.

FIG. 30 is a perspective view showing a conventional input / output device.

FIG. 31 is a perspective view showing a conventional input / output device.

FIG. 32 is a plan view showing a conventional input / output device.

[Explanation of symbols]

1 input / output device, 2, 3 liquid crystal display panel, 4 input means.

Claims (14)

[Claims] 1. A display means for displaying information on a flexible display screen is provided on both front and back surfaces such that the viewing sides of the front and back surfaces are opposite to each other. An input / output device, wherein a detection means for detecting a position on a display screen corresponding to the pressing by a pressing from a viewing side is arranged. 2. A display means for displaying information on a flexible display screen is provided on each of the front and back surfaces so that the viewing sides of the front and back sides are opposite to each other. A plurality of sheet-like input / output units in which detecting means for detecting a position on the display screen corresponding to the pressing by a pressing from the viewing side are provided, and the ends of the input / output units are connected to the connection unit in a spreadable manner. An input / output device characterized by the following. 3. A display means for displaying information on a flexible display screen, and a position on the display screen provided below the display means and corresponding to the pressing by pressing from the viewing side of the display screen. An input / output device comprising: a plurality of sheet-like input / output units each provided with a detection unit for detecting a state of the input / output unit; 4. A display means for displaying information on a flexible display screen, and a position on the display screen provided below the display means and corresponding to the pressing by pressing from the viewing side of the display screen. An input / output device comprising: a sheet-like input / output unit provided with a detection unit for detecting the input / output unit on both front and rear sides such that the viewing side of the display screen is in the opposite direction. 5. A display means for displaying information on a flexible display screen, and a position on the display screen provided below the display means and corresponding to the pressing by pressing from the viewing side of the display screen. A plurality of sheet-like input / output units provided with a sheet-like single-side input / output unit having a detection unit for detecting the front and back sides so that the viewing side of the display screen is in the opposite direction to each other. An input / output device characterized in that ends of the sections are connected by a connection section. 6. The input / output device according to claim 1, wherein the display means is driven in a matrix by a segment electrode and a common electrode, and the upper and lower display means are continuously and integrally formed. An input / output device formed and connected to a common electrode of each display means. 7. The input / output device according to claim 4, wherein said detecting means is detected by a matrix of a segment electrode and a common electrode, and upper and lower detecting means are formed continuously and integrally. An input / output device characterized by connecting a common electrode of the means. 8. The input / output device according to claim 2, wherein the adjacent detection means are formed continuously and integrally, and an intermediate part thereof is used as the connection part. An input / output device characterized by being used. 9. The input / output device according to claim 2, wherein said display means adjacent to each other are integrally formed continuously, and an intermediate part thereof is used as said connection part. An input / output device characterized by being used. 10. The input / output device according to claim 9, wherein
The input / output device, wherein the display means is driven by a matrix of segment electrodes and common electrodes, and is formed by connecting the common electrodes of the display means. 11. The input / output device according to claim 2, wherein said display means is driven by a matrix of segment electrodes and common electrodes. An input / output device, wherein a driving unit for driving a common electrode of a plurality of display units is shared and provided at the connection unit. 12. A plurality of sheet-like display means for displaying information on a flexible display screen, wherein at least one side of each display means to be connected is formed into a rectangular wave-shaped uneven portion, and the uneven portion is formed. A display device characterized by being fitted to each other. 13. The input / output device according to claim 12, wherein the projections of the projections and depressions are provided with a mounting portion on which a driving circuit for driving the display means is mounted, and an electrode from which a display electrode of the display means is drawn out. A display device, wherein the units are electrically connected. 14. A display means for displaying information on a flexible display screen, and a position on the display screen provided below the display screen and corresponding to the pressing by pressing from the viewing side of the display screen. And a pair of sheet-like input / output units each having a detection unit for detecting the input / output unit. An input / output device characterized in that a spread can be made.