JP3320617B2 - Input device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a touch panel type input device using virtual keys, and more particularly to an input device suitable for use in a portable information terminal.

[0002]

2. Description of the Related Art Heretofore, there has been an input device for inputting predetermined data by displaying a virtual key on a display provided with a pressure transmitting film on a display surface and pressing the pressure transmitting film at a position where the virtual key is displayed. Are known. Such an input device is, for example, a CD (cash dispenser) of a bank.
Is widely used for portable devices and portable microcomputers.

[0003] Unlike the keys of a normal input keyboard, the virtual keys as described above do not have the feeling of pressing down the key even when the key is pressed (hereinafter referred to as "pressing feeling"). Is input, the fact that the input has been made is fed back to the user by voice.

[0004] However, since this feedback is performed after the input is completed, information while the virtual key is being pressed is not transmitted to the user. This allows the use of a relatively large display, such as a bank CD machine,
When the number of virtual keys to be displayed on one screen is small, no problem occurs.

[0005] However, if the area of the display that can be secured is very small like a portable microcomputer and a large number of virtual keys must be displayed on one screen, the size of one virtual key must be increased. Cannot be performed, and a sufficient interval between the virtual keys cannot be secured. Therefore, when an attempt is made to input by pressing the virtual key with a fingertip, the user often mistakenly presses the virtual key intended to be pressed and the virtual key adjacent to the virtual key at the same time. In the case of input using a general keyboard, if the user intends to simultaneously press a key intended to be pressed and a key adjacent to the key, the user feels uncomfortable with a fingertip. Although it is rare to make an erroneous input, in the case of a virtual key, there is no pressing feeling at all, so the user will notice the erroneous input only after completing the input.

In order to solve the above-mentioned problem, in such a portable computer, a pressing pen provided with a Teflon (registered trademark) chip at a pen tip is provided as an accessory, and a virtual pen is used by the pressing pen. In some cases, a key is pressed. However, it is troublesome to take out the pressing pen every time the virtual key is input. Also, if the pressing pen is lost, it becomes impossible to perform input using the virtual key. When the pressing pen is not used, the number of virtual keys to be displayed on one screen must be limited.

[0007]

In the case where the pressing pen is provided as described above or the case where the number of virtual keys is limited,
There is a problem that the usability of the portable computer is greatly deteriorated.

The present invention has been made in view of such circumstances, and can display a large number of virtual keys on a narrow display surface, and does not require a dedicated pen for pressing the virtual keys, and inputs with a human finger. It is an object of the present invention to provide an input device which can perform the input and can prevent an erroneous input.

[0009]

In order to achieve the above object, a first means is a display device for displaying data to be input as virtual keys in an input device, and a display device provided on a display surface of the display device. a pressure transmitting film, which is connected to a pressure transmitting film, versus the position where the pressure is applied in the pressure-transmitting film
An input processing unit for specifying a virtual key displayed on the display device at a corresponding position; and an input processing unit provided on the pressure transmitting film.
Are arranged corresponding to the positions where the virtual keys are displayed.
And an input sheet on which a convex portion having transparency and flexibility is formed, wherein the convex portion has a pressure receiving portion that receives pressure, and a protrusion that projects from the pressure receiving portion toward the pressure transmitting film. When pressure is applied to the pressure receiving portion,
The projection is configured to press the pressure transmission film .

[0010] According to the first means, first, the user checks the virtual key displayed on the display device through the projection of the transparent input sheet. The user presses the pressure receiving portion of the convex portion located directly above the desired virtual key, whereby the projection of the convex portion presses the pressure transmitting film . The input processing unit connected to the pressure transmitting film specifies a virtual key displayed on the display device at a position corresponding to the pressing position.

[0011] The second means is the input device, a display device for displaying to be input data as a virtual key, and the pressure transmitting film provided on a display surface of said display device, said pressure
Is connected to the transmission film, the pressure of the pressure transmission membrane is applied
An input processing unit that specifies a virtual key displayed on the display device at a position corresponding to the position ;
A position where each of the virtual keys is detachably provided and is displayed.
Permeable and flexible
An input sheet having a convex portion formed that a detection means for the input sheet to determine whether it is mounted on the display device, the output signal of said detecting means, control to display the virtual key on the display device Means, the convex portion has a pressure receiving portion that receives pressure, and a projection that projects from the pressure receiving portion toward the pressure transmitting film , and when pressure is applied to the pressure receiving portion, the projection is formed. The part is configured to pressurize the pressure transmitting film .

According to the second means, when the user wants to make an input using the virtual key, the user attaches the input sheet to the display device. The detecting means sends to the control means that the input sheet has been mounted, and the control means instructs the display device to display the virtual key. By attaching and detaching the input sheet to and from the display device in this manner, the input mode can be changed.

The third means is characterized in that the input sheet has a frame in which an opening for mounting the projection is formed corresponding to a position where the virtual key is displayed. Is what you do.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. First Embodiment First, a first embodiment will be described. 1 to 4
FIG. 1 is a diagram showing a first embodiment of the present invention.

FIG. 1 shows a portable computer 1 which is an example of a portable information terminal having an input device according to the present invention. As shown in FIG. 1, the portable computer 1
Comprises a main body 2 having an input device according to the present invention and a display 3.

As shown in FIGS. 1 and 2, the input device includes a display device 10, a pressure transmitting film 15 (pressure transmitting portion) provided on a display surface of the display device 10, and a pressure transmitting film 15.
And an input sheet 20 provided on the pressure transmitting film 15.

The display device 10 comprises, for example, a liquid crystal display. The display device 10 has a plurality of virtual keys for inputting data to an arithmetic processing unit (not shown) of the portable computer 1. A virtual key group consisting of 11 is displayed. As shown in FIG. 1, the virtual keys 11 constituting the virtual key group are arranged in a matrix (in a grid pattern) at regular intervals in the vertical and horizontal directions.

The display device 10 displays, for example, a virtual key group displaying alphabets, a virtual key group displaying numbers, and a virtual key group displaying hiragana, katakana, arithmetic symbols, etc., as data to be input. The virtual key group to be displayed can be selected by switching with the display switching button 12 provided on the main body 2. In addition, even if any virtual key group among the above-described alphabets, numbers, hiragana, katakana, arithmetic symbols, and the like is displayed, the virtual key 11 constituting the virtual key group is displayed on the display device 1.
It is arranged and displayed in the same manner on the same position on 0.

The pressure transmitting film 15 and the input processing unit 3
0 is substantially the same as that used in the conventional input device, and when the pressure applied to the pressure transmitting film 15 becomes a predetermined value or more, the pressing position and the position are added. A signal indicating that the pressure has been applied is sent to the input processing unit 30. Then, based on the signal indicating the pressing position, the input processor 30 displays the display device 1 immediately below the pressing position.
The virtual key 11 displayed at 0 is specified.

Also, as shown in FIG.
Is mounted on the pressure transmitting film 15 so as to cover the entire surface of the display device 10. The input sheet 20 is made of a transparent and flexible rubber material or resin material. In addition, as the rubber material and the resin material, it is preferable to select silicone rubber or polyvinyl chloride in consideration of moldability and chemical resistance in addition to the condition of being transparent and flexible.

Further, as shown in FIG.
Is composed of a base 21 in close contact with the pressure transmitting film 15 and a plurality of projections 22 projecting upward from the base 21. Each convex part 2
2 has a substantially rectangular shape when viewed from above, and is arranged in a matrix shape (a grid shape) at a position corresponding to the display position of each virtual key 11 with a constant interval in the vertical and horizontal directions.
Are spaced apart from each other. The bottom surface of the base 21 of the input sheet 20 is adhered to the pressure transmitting film 15 by an easily removable adhesive means. A notch 27 is formed on a side edge of the input sheet 20. The input sheet 20 can be easily removed from the pressure transmitting film 15 by hooking the notch 27 with a finger, a pen point, or the like, for example.

The convex portion 22 has a pressure receiving portion 23 that receives pressure when a user's finger is pressed, and a projection portion 24 that projects downward (toward the pressure transmitting film 15) from substantially the center of the lower surface of the pressure receiving portion 23. When the pressure receiving portion 23 is not pressed, that is, when no pressure is applied to the pressure receiving portion 23, the pressure transmitting film 1
5 and a support portion 25 that is held in a state of being separated from the support portion 25.

As shown in FIG. 2, the pressure receiving portion 23 has a cross section that is convex upward.
The upper surface has a curved shape with the center raised most.

The area of the tip of the projection 24 is set sufficiently smaller than the area of the pressure receiving part 23. The interval between the protrusions 24 of the adjacent protrusions 22 is larger than the resolution of the pressure transmitting film 15. Here, the “resolution of the pressure transmission film 15” means the minimum of the interval x that can be sensed as two pressure points when the pressure transmission film 15 is simultaneously pressed at two pressure points separated by an interval x. Mean value.

The interval between the adjacent convex portions 22 is set such that when an arbitrary convex portion 22 is pressed with a fingertip of the user, the adjacent convex portion 22 is not pressed. That is, the interval between the virtual keys 11 is determined depending on the interval between the convex portions 22.

In this embodiment, the protrusion 24
Is provided substantially at the center of the pressure receiving portion 23.
When the position of 4 and the position of the character or symbol displayed on the virtual key 11 completely match, the character or symbol tends to be slightly difficult to see. Therefore, in such a case, it is preferable to displace the position of the protruding portion 24 from the center of the pressure receiving portion 23 or to shift the character or symbol of the virtual key 11 toward the end of the virtual key 11 for display. By doing so, the user can check the characters or symbols displayed on the virtual key 11 through only the thin pressure receiving portion 23, so that the display of the virtual key 11 can be checked more easily. be able to.

In this embodiment, the virtual key 1
Although the example in which the 1 and the convex portions 22 are arranged in a matrix (in a grid pattern) is shown, the present invention is not limited to this, and the virtual keys 11 and the convex portions 22 may be arranged on a general keyboard (for example, a JIS keyboard layout). May be arranged as follows. In this case, it is only necessary that the position of each virtual key 11 and the position of each projection 22 correspond to each other.

Next, the operation of the present embodiment having such a configuration will be described.

In describing the operation of the present embodiment, the following situation is assumed. That is, the word processor software has been started in the portable computer 1, and the user is trying to input characters while looking at the virtual key displayed on the display device 10.

First, the user selects a desired input mode from among alphabets, numbers, hiragana, katakana, arithmetic symbols and the like by using the display switching button 12. in this case,
It is assumed that a Roman character input mode using an alphabet is selected.

Then, (the display surface of) the display device 10
As shown in FIG. 1, virtual keys 11 displaying alphabets are displayed in a matrix. In this case, since the input sheet 20 is formed of a transparent resin or rubber material, the user can visually check the virtual keys 11 displayed on the display device 10.

As shown in FIGS. 2 and 3, the user presses the pressure receiving portion 23 of the convex portion 22 located on the desired virtual key 11 with a fingertip. The change in the state of the protrusion 22 in this case will be described with reference to FIGS. FIG. 4 is a graph showing the relationship between the amount of displacement at the center of the pressure receiving portion 23 and the force required to press the pressure receiving portion 23 (hereinafter, referred to as “pressing force”), which is attached to the horizontal axis of the graph. (A) (b) (c)
4 shows states (a), (b), and (c) in FIG. 3.

First, when no pressure is applied to the pressure receiving portion 23, that is, when the convex portion 22 is not pressed by the user, the convex portion 22 is in a state shown in FIG.

Next, the user's finger contacts the upper surface of the pressure receiving portion 23. When the user puts his / her finger on the finger, the pressure receiving part 2
3 is bent and displaced downward (toward the pressure transmitting film 15). In this case, as shown in FIG. 4, as the displacement amount at the center of the pressure receiving portion 23 increases, the pressing force gradually increases (corresponding to the line segment OP in FIG. 4). As the pressing force increases, the user feels that the pressure receiving portion 23 of the convex portion 22 is pressed. At this stage, the pressing force is determined by the bending rigidity of the pressure receiving portion 23.

Further, when the user presses down the pressure receiving portion 23, the projection 24 formed on the lower surface of the pressure receiving portion 23 comes into contact with the pressure transmitting film 15 as shown in FIG. 4 corresponds to point P). When the projection 24 comes into contact with the pressure transmitting film 15, the projection 24 starts to deform, and the pressing force starts to increase rapidly (corresponding to the line segment PQ in FIG. 4). Thereby, the user recognizes that the state immediately before the input is performed. From this point on, the pressing force is determined by the compression elastic modulus of the projection 24.

When the pressing force exceeds a predetermined threshold value FC,
The pressure transmitting film 15 senses the contact of the protrusion 24 and the protrusion 2
A signal indicating that the pressure transmission film 15 has pressed the pressure transmission film 15 and a pressure position are sent to the input processing unit 30. The input processing unit 30 specifies the virtual key 11 displayed on the display device 10 immediately below the pressing position based on the pressing position, and sends the information to the processing unit of the computer 1. This makes the computer 1
The operation processing unit recognizes character information that the user tries to input, and the character information is displayed on the display 3.

As described above, according to the present embodiment, the shape of the projection 22, particularly the pressure receiving portion 23 and the projection 24, is not changed until the projection 24 comes into contact with the pressure transmitting film 15.
As the amount of displacement at the center of the pressure receiving portion 23 increases, the pressing force (the pressure that the convex portion 22 receives from the user's finger) gradually increases, and the pressing force increases when the protrusion 24 contacts the pressure transmitting film 15. It is set to increase rapidly. Therefore, when the user presses down the pressure receiving portion 23, the user can obtain a feeling close to a feeling of operating a normal keyboard. For this reason, erroneous inputs, particularly erroneous inputs in which keys adjacent to each other are pressed simultaneously, can be significantly reduced. That is, in an input device in which an input is performed by directly pressing the pressure transmitting film with a fingertip, the user hardly feels a pressing feeling, so that when the user simultaneously presses a virtual key adjacent to a desired virtual key, The input is completed before the user notices the mistake. However, according to the present embodiment, when the pressure receiving portion 23 of the convex portion 22 is pressed,
After the pressure receiving portion 23 is displaced downward by a predetermined amount, the pressure transmitting film 15
When the user detects the pressure and further presses down the pressure receiving section 23, there is a feeling of pressing down, so that the time for the user to sufficiently notice the erroneous input is secured.

Further, since the projection 24 is separated from the pressure transmitting film 15, the projection 24 does not press the pressure transmitting film 15 with a predetermined load or more by merely touching the pressure receiving portion 23 lightly. Therefore, erroneous input can be further reduced.

Further, as shown in FIG. 2, the pressure receiving portion 23 has a sectional shape that is convex upward.
Since the upper surface of the pressure receiving portion 23 has a curved shape in which the center is raised most, the same effect as when the interval between the convex portions 22 is increased is produced. Therefore, the erroneous input as described above can be further reduced.

As a result of reducing erroneous inputs, the size of the virtual keys can be reduced, and the interval between the virtual keys can be reduced. For this reason, many virtual keys can be displayed on one screen, and the operability of the portable computer can be improved.

Since the bottom surface of the base 21 of the input sheet 20 is adhered to the pressure transmitting film 15 by an easily removable adhesive means, the input sheet 20 can be easily replaced. Therefore, even when the input device according to the present invention is applied not only to a portable information terminal but also to a machine operated by an unspecified number of people, such as a CD machine at a bank, a guide machine, etc.
The surface touched by the user's hand can be kept hygienic only by replacing 0. Second Embodiment Next, a second embodiment will be described with reference to FIGS. The second embodiment is different from the first embodiment in that the input sheet is detachable from the pressure transmitting film, and the other parts are substantially the same as the first embodiment. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

As shown in FIG. 5, the portable computer 1
a includes a display device 60, a pressure sensor 15 provided on a display surface of the display device 60, and an input sheet 70 detachably provided to the display device 60. The display device 60 is embedded in the main body 50 of the portable computer 1a.

The display device 60 includes a list of files stored in a storage device (not shown) of the portable computer 1a as shown in FIG. 7 (a), or a file list as shown in FIG. 7 (b). The contents of the file are displayed together with the large virtual key 13 having an area sufficiently larger than the fingertip of the user.

In addition to this, in the display device 60, when the detection means 52 described later detects that the input sheet 70 has come into contact with the display surface of the display device 60, FIG.
As shown in (c), the contents of the file and a plurality of virtual keys 11 are displayed. When the virtual key 11 is displayed as shown in FIG.
Are arranged in a matrix on a substantially lower half portion of the display surface of the display device 60 at regular intervals in the vertical and horizontal directions.

In the portable computer 1a, a pressure pen 15 (not shown) having a Teflon (registered trademark) chip or the like attached to the tip thereof is used to set the pressure sensor 15 on the display device 60 in the drawing input mode. ), Data such as characters, graphics, and symbols can be directly input. This drawing input function is known per se, and a detailed description is omitted.

Also, as shown in FIG.
Is a frame 71 made of hard transparent resin and a button device 8
The frame 71, that is, the input sheet 70, is rotatably attached to one side of the main body 50 via a pair of hinges 51. The frame 71 has a plurality of rectangular openings 72 arranged in a matrix at regular intervals in the vertical and horizontal directions. The arrangement of the openings 72 corresponds to the arrangement of the virtual keys 11 shown in FIG. In addition, as the hard transparent material used for the frame 71, polycarbonate or an acrylic resin is preferable, and among them, polycarbonate having high strength is more preferable.

Each of the openings 72 is provided with a button device 80 made of a resin material having transparency and flexibility. As shown in FIG. 6, when the input sheet 70 is rotated in the direction of the display device 60 (see the arrow in FIG. 5), the button device 80 includes a base 81 whose bottom surface 81a is in close contact with the pressure transmitting film 15, and Convex portion 82 projecting upward from 81
Consists of The configuration (see FIG. 6) and function of the projection 82 are substantially the same as those of the projection 22 in the first embodiment. The upper surface 81a of the base 81 of the button device 80 is fixed to the frame 71 with an adhesive. The projection 82 of the button device 80 protrudes above the upper surface 71 a of the frame 71.

Further, a projection 73 is formed on the frame 71. This projection 73 is used to display the input sheet 70
When it is turned in the 0 direction (see the arrow in FIG. 5), it engages with a latch portion 51 formed on the main body 50 of the portable computer 1a. When the projection 73 is engaged with the latch portion 51, the bottom surface 81 of the base 81 of the button device 80
b is maintained so as to be in close contact with the pressure transmitting film 15. Note that the engagement between the projection 73 and the latch portion 51 can be released by sliding the lever 52 provided on the main body 50.

The latch section 51 is provided with a detecting means 52 for detecting that the projection 73 is engaged with the latch section 51. When the detecting means 52 detects that the projection 73 is engaged with the latch portion 51, the detecting means 52
A signal is output to 0.

Next, the operation of the present embodiment having such a configuration will be described. In describing the operation of the present embodiment, the following situation is assumed. That is, as shown in FIG. 7A, the portable computer 1a
Has started up software having functions such as a word processor schedule and an address book management, and the user is trying to select a file while viewing the file list displayed on the display device 60. Here, first, the user presses the large virtual key 13 indicating “up” or “down”.
Press with your finger to select an appropriate file. Then Figure 7
As shown in (b), the display device 60 displays the contents of the selected file.

Next, the user tries to edit the contents of the displayed file. In this case, the user enters the input sheet 7
0 is closed and the projection 73 of the frame 71 is engaged with the latch portion 51 (see the arrow in FIG. 5), the detection means 52 provided on the latch portion 51 detects that, and the control means 90 of the portable computer 1a. Send a signal to. Then, the control means displays the virtual key 11 on the lower half of the display device 60 (see FIG. 7C). In this case, since the button devices 80 made of a soft resin material are attached to the frame 71 made of a hard, that is, high rigid resin material, each button device 80 is accurately positioned with respect to the corresponding virtual key 11. Can be. When the user presses the projection 8 of the button device,
By appropriately pressing 2, the input is performed in the same manner as in the first embodiment, and the contents of the file displayed on the display device 60 can be edited.

When the editing of the contents of the file is completed, the user slides the lever 52 provided on the main body 50, whereby the engagement between the projection 73 and the latch portion 51 is released. The release of the engagement between the projection 73 and the latch portion 51 is detected by the detecting means 52, and a signal indicating this is transmitted to the control means 90 of the portable computer 1a. Control means 90
Returns the display on the display device 50 to the display as shown in FIG.

As described above, according to the present embodiment,
The following functions and effects can be obtained in addition to the functions and effects of the first embodiment. That is, by engaging or disengaging the projection 73 formed on the frame 71 of the seat 70 with the latch portion 51, the file content and the virtual key are simultaneously displayed on the display device 60 or the file content is displayed. Can be switched to display only the display device 60. If there is enough space in the display device 60, the large virtual key 13 is displayed, and a direct input operation is performed with a finger. When there is not enough space in the space, the input operation can be performed by displaying the relatively small virtual key 11 and indirectly operating the virtual key 11 via the input sheet 70. Further, an input can be made with a pressing pen as a drawing mode. That is, according to the present embodiment, the input operation can be performed in the most easy-to-operate manner, and the input operation efficiency can be greatly improved. Third Embodiment Next, a third embodiment will be described with reference to FIGS. The third embodiment is different from the first embodiment in that different types of input sheets can be used, and other configurations are substantially the same as the first embodiment. In the third embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

FIG. 8 shows only a portion corresponding to the main body 2 of the portable computer 1 according to the first embodiment. As shown in FIG. 8, similarly to the first embodiment, a pressure transmitting film 15 is provided on the display surface of the display device 10 in a detachable manner, and the input sheet 20 is connected to the display surface of the display device 10. Installed to cover.

In this embodiment, a plurality of types of input sheets 20 are used corresponding to the types of data to be input. As shown in FIGS. A plurality of identification protrusions 74 are formed in the same area at the corner. The number and arrangement of the projections 74 are set in accordance with the type of the input sheet 20. The projections 22 formed on each input sheet 20
May be all the same or different from each other (shape, number, and arrangement mode). Further, the pressure transmitting film 15 is provided with an input sheet identification area 16 at a position corresponding to the position of the projection 74 of the input sheet 20.

In the present embodiment, the input processing section 30 also functions as a detecting means for determining whether or not the input sheet 20 is mounted. In the input processing unit 30, data indicating the type of the input sheet 20 corresponding to the arrangement pattern (number and arrangement mode) of the protrusions 74 is stored in advance.

The input processing unit 30 includes a control unit 90a.
The control means 90a has substantially the same function as the control means 90 in the second embodiment.

Next, the operation of the present embodiment having the above configuration will be described.

First, the user mounts the input sheet 20 corresponding to the type of data to be input on the pressure transmitting film 15. In this case, since the input sheet 20 has elasticity and tends to be flat by itself, the protrusion 74 formed on the input sheet 20 is in contact with the input sheet identification area 16 of the pressure transmission film 15. This is pressed against the pressure transmitting film 15 with a pressure sufficient to allow the pressure transmitting film 15 to sense the effect.

Next, the input processing unit 30 includes the pressure transmitting film 15
The type of the input sheet 20 attached is specified by associating the arrangement pattern of the protrusions 74 detected by the input sheet identification area 16 with the data indicating the type of the input sheet 20. Then, the input processing unit 30
At 0a, a signal indicating that the input sheet 20 has been mounted and a signal indicating the type of the input sheet 20 that has been mounted are transmitted. The control means 90a instructs the display device 10 to display the virtual key 11 corresponding to the type of the input sheet 20 attached, and the virtual key 11 is displayed on the display device 10 which has received the instruction.

As described above, according to this embodiment, the following operation and effect can be obtained in addition to the operation and effect of the first embodiment. That is, in the present embodiment, the identification protrusion 7 provided on the input sheet 20 is used.
4 presses the input sheet identification area 16 of the pressure transmitting film 15 so that the input processing unit 30 functioning as a detection unit.
Automatically determines the attachment / detachment state of the input sheet 20 and the type of the input sheet 20, and based on this determination, the virtual key 11
Is displayed. For this reason, the user enters the input sheet 20
In order to allow the portable computer 1 to recognize the state of attachment / detachment and the type of the input sheet 20, a specific position of the pressure transmitting film 15 is intentionally pressed, or a display switching button (see the first embodiment) is operated. And the input operation efficiency can be improved.

According to the present embodiment, the input sheet 2
0, it is only necessary that the arrangement pattern of the convex portions 22 formed on the input sheet 20 and the arrangement pattern of the virtual keys 11 displayed on the display device 10 match.
The degree of freedom in arranging the virtual key 11, that is, the convex portion 22, can be increased. For this reason, the virtual key 11 is
In the case where it is not necessary to arrange the projections at high density in one screen, the size of the projections 22 can be increased or the interval between the projections 22 can be set wider, so that the input operation efficiency can be further improved. .

In the first to third embodiments, an example in which the input device of the present invention is applied to a portable computer has been described. However, the present invention is not limited to this, and other portable information terminals may be used. For example, the present invention can be applied to a mobile phone, a portable word processor, a so-called electronic organizer, and the like. Furthermore, not only portable information terminals, but also C
It can also be used as an input device such as a D (cash dispenser) machine and a guide device.

Further, in the first to third embodiments, only the effects of downsizing and high-density arrangement of virtual keys have been described, but the present invention is applied only for the purpose of improving the operation feeling of virtual keys. May be.

[0065]

As described above, according to the present invention,
It is possible to provide an input device that can be input with a fingertip and that can significantly reduce the probability of erroneous input even if the size of the virtual key is reduced. In addition, small virtual keys can be arranged at high density on a display device having a limited display area. Therefore, an input device with high work efficiency can be obtained.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention,
FIG. 1 is an exploded perspective view showing a portable computer to which the input device of the present invention is applied.

FIG. 2 is a diagram illustrating a configuration of an input sheet according to the first embodiment, and is a perspective view partially including a cross-sectional view.

FIG. 3 is a cross-sectional view illustrating the operation of a convex portion of the input sheet.

FIG. 4 is a graph showing a relationship between a displacement amount of a pressure receiving portion of a convex portion and a pressing force.

FIG. 5 is a diagram showing a second embodiment of the present invention,
FIG. 1 is an exemplary perspective view showing a portable computer to which an input device of the invention is applied.

FIG. 6 is a diagram showing a configuration of an input sheet according to the second embodiment, and is a perspective view partially including a cross-sectional view.

FIG. 7 is a diagram illustrating a change in a screen displayed on the display device according to the second embodiment.

FIG. 8 is a diagram showing a third embodiment of the present invention,
FIG. 1 is an exploded perspective view showing a portable computer to which the input device of the present invention is applied.

FIG. 9 is a cross-sectional view illustrating a configuration of an input sheet according to a third embodiment.

[Explanation of symbols]

 10, 60 display device 11 virtual key 15 pressure transmitting body (pressure transmitting film) 20, 70 input sheet 22, 82 convex portion 23 pressure receiving portion 24 projecting portion 30 input processing portion 52 detecting means 71 frame 90, 90a control means

Continuation of the front page (56) References JP-A-63-304537 (JP, A) JP-A-7-64688 (JP, A) JP-A-6-19849 (JP, A) (U, J) U.S.P. 5-40929 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G06F 3/02 310 G06F 3/023

Claims (5)

(57) [Claims] A display device for displaying 1. A data to be input as a virtual key, and the pressure transmitting film provided on a display surface of the display device, connected to the pressure transmission membrane, the pressure of the pressure transmission membrane is pressurized
An input processing unit for specifying a virtual key displayed on the display device at a position corresponding to the obtained position; and an input processing unit provided on the pressure transmitting film, wherein each virtual key is displayed.
Transparent and flexible
An input sheet on which a convex portion having a characteristic is formed, wherein the convex portion has a pressure receiving portion receiving pressure, and a projecting portion projecting from the pressure receiving portion toward the pressure transmission film , When pressure is applied to the portion, the protrusions
An input device configured to pressurize the pressure transmitting film . 2. The display device according to claim 1, further comprising an adhesive means for attaching said input sheet to said display device by adhesive. 3. A display device for displaying data to be input as virtual keys, a pressure transmitting film provided on a display surface of the display device, and a pressure transmitting film connected to the pressure transmitting film to apply pressure of the pressure transmitting film.
An input processing unit identifies the virtual keys displayed on the display device at a position corresponding to the obtained position, detachably attached to the pressure transmitting film, each virtual key
Are placed corresponding to the position where the
An input sheet on which a convex portion having elasticity and flexibility is formed; a detection unit for determining whether the input sheet is attached to the display device; and an output signal of the detection unit, the display device Control means for displaying a virtual key, wherein the convex portion has a pressure receiving portion that receives pressure, and a projection portion that protrudes from the pressure receiving portion toward the pressure transmission film , and a pressure is applied to the pressure receiving portion. When added, the protrusion is
An input device configured to pressurize the pressure transmitting film . 4. The input sheet displays the virtual key.
Opening for mounting the projection at a position corresponding to the position
The input device according to claim 3, further comprising a frame having a mouth formed. 5. The input device according to claim 1, wherein the projection is formed so as to face a user.