KR20120135049A - Film type apparatus for providing haptic feedback and touch screen including the apparatus - Google Patents

Film type apparatus for providing haptic feedback and touch screen including the apparatus Download PDF

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Publication number
KR20120135049A
KR20120135049A KR1020120055620A KR20120055620A KR20120135049A KR 20120135049 A KR20120135049 A KR 20120135049A KR 1020120055620 A KR1020120055620 A KR 1020120055620A KR 20120055620 A KR20120055620 A KR 20120055620A KR 20120135049 A KR20120135049 A KR 20120135049A
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KR
South Korea
Prior art keywords
charge
electrode
charge charging
charging member
disposed
Prior art date
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KR1020120055620A
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Korean (ko)
Inventor
경기욱
임정묵
신희숙
박준석
김상연
윤성율
Original Assignee
한국전자통신연구원
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Application filed by 한국전자통신연구원 filed Critical 한국전자통신연구원
Priority to US13/485,004 priority Critical patent/US20120306790A1/en
Publication of KR20120135049A publication Critical patent/KR20120135049A/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper

Abstract

PURPOSE: A film-type tactility providing device and a touch screen including the same are provided to provide a small and thin structure and implement local tactility output by using manpower, repulsion, and/or deformation according to the same generated between a pair of charge storage members. CONSTITUTION: A first charge storage member(14) is placed on a first electrode(12). A second charge storage member is separated from the first charge storage member. A spacer(16) is placed between the first and the second charge storage members and separates the charge storage members from each other. A second electrode is placed on the second charge storage member. An charge supply unit(18) is connected to the first and the second electrodes to supply charges. The spacer is placed along a border of the first and the second charge storage members to limit an empty space in a central unit. [Reference numerals] (18) Charge supply unit

Description

Film type tactile providing device and a touch screen having the same {Film type apparatus for providing haptic feedback and touch screen including the apparatus}

The present invention relates to a tactile providing device, and more particularly, to a film-type tactile providing device capable of providing various touch feelings such as a click feeling to a user using a touch interface and a touch screen having the same.

Many electronic devices currently provide a touch interface. For example, mobile phones, smart phones, tablet computers, laptop computers, personal digital assistants (PDAs), portable multimedia players (PMPs), digital cameras, portable game consoles, MP3 players, and the like. Touch screens are provided as touch interfaces in portable electronic devices, as well as fixed electronic devices such as automated teller machines (ATMs), information retrieval machines, and unmanned ticket machines.

In connection with such a touch interface, recently, haptic technology, which provides a touch to a user as a method for enhancing a user experience, has attracted attention. Haptic technology enables the user to provide various types of tactile sensations when the user interacts with digital objects, thereby ultimately providing feedback that combines visual and tactile sensations. Electronic devices to which the haptic technology is applied can provide a user with a more realistic touch interface than a conventional electronic device.

A motor scheme is known as an example of haptic technology that provides a tactile feeling to a user. According to the motor method, a vibration motor is installed below the touch panel, and when input from the user is sensed, the entire touch panel is vibrated to provide feedback. Such a motor method has a fast response speed, low power consumption, and easy to control the tactile output, and is widely used in mobile devices. However, due to the relatively large size of the vibrating motor module, there is a difficulty in disposing the module and the overall thickness of the mobile device becomes thick. In addition, since the motor system has a structure in which vibration is propagated through the entire electronic device having a touch interface, it is difficult to provide a localized haptic sense only at a position where the user touches.

As the demand for an electronic device having a thinner thickness increases, a film-type tactile sensation providing module using an electro-active polymer (EAP) material as an alternative to overcome the disadvantages of the motor method described above (film type) Modules for providing haptic feedback or film type haptic modules have emerged. According to this, the deformation of the EAP film induced when a voltage is applied is used, and since a deformation of the EAP film alone is difficult to obtain sufficient output (displacement), an additional mass having a constant weight is used together. In other words, the deformation of the EAP film causes the attachment to move, and the user is a mechanism that is provided with a touch due to the movement of the attachment. As a result, the film type haptic module using the EAP film plays an important role in the weight or size of the attachment to obtain sufficient output. EAP film is not only easy to manufacture a film type according to the characteristics of the polymer, but also has the advantage of implementing a low-power and fast response haptic module. On the other hand, the additional device used with the EAP film makes the structure of the film type haptic module complicated and it is not easy to implement tactile localization.

One problem to be solved by the present invention is to provide a film-type tactile touch providing device and a touch screen having the same, which is small in volume, thin in thickness and simple in structure.

Another problem to be solved by the present invention is to provide a film-type tactile touch providing apparatus and a touch screen having the same, which is small in volume and thin in thickness, and enables local tactile output only where the user makes contact.

Another problem to be solved by the present invention can be disposed on the upper side of the touch screen, to provide a film-type tactile feel providing device capable of local tactile output irrespective of the flexibility of the touch screen and a touch screen having the same will be.

According to an aspect of the present invention, there is provided a tactile touch providing apparatus including a first electrode, a first charge charging member disposed on the first electrode, and a spaced apart from the first charge charging member. A second charge charging member, a spacer disposed between the first charge charging member and the second charge charging member so as to be spaced apart from each other, a second electrode disposed on the second charge charging member, and the first And a charge supply unit connected to the first electrode and the second electrode to supply charge.

According to one aspect of the embodiment, the spacer may be disposed along the edges of the first and second charge charging members to define a void in the center.

According to another aspect of the embodiment, the first and second charge charging member may be formed of an amorphous material having a porous sponge structure. For example, the amorphous material may include cellulose acetate.

According to another aspect of the embodiment, the charge supply unit may supply a charge of the same polarity or a charge of the opposite polarity to the first electrode and the second electrode, or the charge supply unit is the first electrode and the One of the charges of the same polarity and the charge of the opposite polarity may be selectively supplied to the second electrode.

According to another aspect of the embodiment, the first and second electrodes, the first and second charge charging member, and the spacer may all be formed of a transparent material.

According to another aspect of the embodiment, it may further include a first auxiliary member disposed on the second electrode and formed of a material having a greater rigidity than the second charge charging member. The display device may further include a second auxiliary member disposed under the first electrode and formed of a material having a rigidity greater than that of the first charge charging member. In this case, the first and second electrodes, the first and second charge charging members, the spacer, and the first and second auxiliary members may all be formed of a transparent material.

According to another aspect of the embodiment, the first charge charging member, the spacer, and the second charge charging member may be integrally formed of the same material.

According to an aspect of the present invention, there is provided a film-type tactile providing device according to an embodiment of the present invention. A plurality of tactile providing modules, each of the plurality of tactile providing modules disposed on the first electrode, the first charge charging member disposed on the first electrode, and an upper edge of the first charge charging member; A transparent spacer disposed along the center to define a void at a central portion thereof, a transparent second charge charging member disposed on the spacer to cover at least an upper side of the void space, the second charge charging member disposed on the second charge charging member A transparent second electrode which is connected to the first electrode and the second electrode to supply charge It may include a charge supply unit.

A touch screen according to an embodiment of the present invention for achieving the above object includes a flat panel display, a film-type tactile providing device disposed on the flat panel display, and a transparent touch panel disposed on the film-type tactile providing device. do. In this case, the touch panel may have a flexible characteristic. Alternatively, a touch screen according to another embodiment of the present invention for achieving the above object includes a flat panel display, a transparent touch panel disposed on the flat panel display, and a film-type touch providing device disposed on the touch panel. .

The tactile provision device according to the embodiment of the present invention utilizes the attractive force, the repulsive force and / or the deformation according to the pair of charge-charging members disposed to face each other, so that the overall volume is small, thin and simple in structure. In addition, localized tactile output is possible only where the user makes contact.

1A is a perspective view schematically showing the configuration of a device for providing a hand according to a first embodiment of the present invention.
FIG. 1B is a cross-sectional view taken along the line XX ′ of FIG. 1A.
FIG. 2A is a view showing a deformation of the tactile provision device of the first embodiment when the lower and upper charge charging members are charged with different polarities.
FIG. 2B is a view showing how the tactile provision device of the first embodiment is modified when the lower and upper charge charging members are charged with the same polarity.
3A is a cross-sectional view schematically showing the configuration of a tactile feel providing apparatus according to a second embodiment of the present invention.
FIG. 3B is a view showing a deformation of the tactile provision device of the second embodiment when the lower and upper charge charging members are charged with different polarities.
FIG. 3C is a view showing how the tactile provision device of the second embodiment is deformed when the lower and upper charge charging members are charged with the same polarity.
4A is a cross-sectional view schematically showing the configuration of a tactile feel providing apparatus according to a third embodiment of the present invention.
FIG. 4A is a view showing a deformation of the tactile provision device of the third embodiment when the lower and upper charge charging members are charged with different polarities.
FIG. 4C is a view showing how the tactile provision device of the third embodiment is deformed when the lower and upper charge charging members are charged with the same polarity.
5A and 5B are cross-sectional views schematically illustrating the structure of a device for providing a tactile sense according to a fourth embodiment of the present invention. FIG. 5A is a case where no voltage is applied, and FIG. 5B is a case where a voltage is applied.
Figure 6a is an exploded perspective view schematically showing the configuration of a film-type tactile feel providing apparatus according to an embodiment of the present invention.
FIG. 6B is a cross-sectional view taken along the line YY ′ of FIG. 6A.
7A is a diagram illustrating a schematic configuration of a touch screen according to an embodiment of the present invention.
7B is a diagram illustrating a schematic configuration of a touch screen according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The terms used are terms selected in consideration of the functions in the embodiments, and the meaning of the terms may vary depending on the user, the intention or custom of the operator, and the like. Therefore, the meaning of the terms used in the following embodiments is defined according to the definition when specifically defined in this specification, and unless otherwise defined, it should be interpreted in a sense generally recognized by those skilled in the art. And where the first material layer is formed on or under the second material layer, it is understood that when the first material layer is formed directly on or directly under the second material layer, Of course, unless otherwise stated, it may be interpreted to include all cases where another third material layer is interposed between the second material layer and the first material layer.

FIG. 1A is a perspective view schematically illustrating a configuration of a device for providing a hand according to a first embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along the line XX ′ of FIG. 1A. 1A and 1B may be a unit module constituting a film-type touch providing apparatus according to an embodiment of the present invention described below. The film type tactile providing device is, for example, a touch type display, that is, a device that is combined with a touch screen to provide a tactile feeling delivered to a user when the user interacts with an object output on the touch screen using a finger or the like. This is described in detail later. 1A and 1B, the tactile provision device 10 may include a pair of electrodes 12, a pair of charge capacitive members 14, and a spacer. 16) and a charge supply unit 18.

In the following embodiment, it is assumed that the user makes a touch on the upper side of the tactile provision device 10, that is, the direction in which the upper charge charging member 14b and the upper electrode 12b are located. However, the limitation of the directionality is merely an example for convenience of description, and depending on the application of the electronic device including the tactile provision device 10, the vertical direction may be changed or the direction may be left and right instead of vertically. have.

The electrode 12 receives charge from the charge supply unit 18 and transfers the charge to the charge charging member 14. The electrode 12 includes a lower electrode 12a and an upper electrode 12b. The electrode 12 is formed of a transparent conductive material, but is not limited thereto. For example, when the tactile generating device 10 is not combined with a touch screen but with an opaque touch pad, the electrode 12 may be formed of an opaque metal material. The transparent conductive material may be, for example, indium tin oxide (ITO), carbon nano tube (CNT), graphene, or the like. The electrode 12 may be formed to a thin thickness of several tens of micrometers or less.

The lower electrode 12a and the upper electrode 12b are connected to the charge supply unit 18, respectively. The charge supply unit 18 is an electric device and / or an electric circuit for supplying charge to be transferred to the charge charging member 14 through the connected electrode 12, and there is no particular limitation on the specific configuration thereof. The charge supply unit 18 may supply charges of different polarities or charges of the same polarity to the lower and upper charge charging members 14a and 14b. In one example of the former, the charge supply unit 18 may include a power supply or a charge charging device, and in the latter example, the charge supply unit 18 may include a charge pump or a charge charging device. Alternatively, in some embodiments, the charge supply unit 18 may include any of a power supply and a charge charging device, and may select any one of charges of the same polarity and charges of different polarities to the lower and upper charge charging members 14a and 14b. It can also be supplied.

The charge charging member 14 serves as a charger for storing the electric charge supplied through the electrode 12. The charge charging member 14 is disposed above the lower electrode 12a and disposed below the lower electrode charging member 14a and the upper electrode 12b that store charge supplied through the lower electrode 12a. And an upper charge charging member 14b for storing charge supplied through 12b. Each of the lower and upper charge charging members 14a and 14b may be charged with different polarities or with the same polarity.

The tactile provision device 10 charges a pair of charges of the same polarity or different polarity to each of the pair of charge charging members 14 through the pair of electrodes 12, and the lower charge charging member 14a and the upper charge charging member. Provide a tactile feeling to the user by the repulsive force or attraction force acting in between (14b) and / or by using a deformation according to the repulsive force or attraction force. To this end, the charge charging member 14 may be formed of a material such as a polymer having charge charging characteristics. The charge charging member 14 may be formed of a transparent material, but is not limited thereto and may be formed of an opaque material depending on the application.

  It is effective to form such a charge charging member 14 with a material having a large charging capacity and a high charging speed. Larger charge capacities can increase the magnitude (strength) of the feedback. And the faster the charging speed, the faster feedback it is possible. For example, the charge charging member 14 may be formed of an amorphous material having a porous sponge structure. Since the amorphous material having a porous sponge structure has a good charging rate or a good electrification, it is suitable for a device using an instantaneous electrostatic force such as the tactile provision device 10. An example of an amorphous material having a porous sponge structure is cellulose acetate, but is not limited thereto.

According to one aspect of this embodiment, at least the upper charge charging member 14b preferably has a rigidity of a predetermined size or more. When the upper charge charging member 14b is small in rigidity, the attraction force and / or repulsive force (or feedback thereby) generated between the lower charge charging member 14a is difficult to be effectively transmitted to the user. In other words, increasing the rigidity of the upper charge charging member 14b has the effect of increasing the inertia change due to deformation, which is advantageous to transfer the touch. On the contrary, when the rigidity of the upper charge charging members 14a and 14b is smaller than the force pressed by the user, the attraction force or repulsive force generated between the lower and upper charge charging members 14a and 14b is hardly transmitted to the user's hand. . For example, when the upper charge charging member 14b is formed of a polymer, it is preferable that the upper charge charging member 14b has a thickness of about 200 μm or more in order to have rigidity of sufficient size.

In addition, depending on the application, it is preferable that the lower charge charging member 14a also has rigidity of a predetermined size or more. This is because, if at least one of the lower and upper charge charging members 14a and 14b has a small stiffness, it may be shorted in contact with each other when an attractive force occurs between the lower and upper charge charging members 14a and 14b. .

The spacer 16 is disposed between the lower and upper charge charging members 14a and 14b to space the lower charge charging member 14a and the upper charge charging member 14b by a predetermined distance. The spacer 16 may be formed of an electrically insulating material such as a polymer, and the like is not particularly limited. In addition, the height of the spacer 16 is not particularly limited, but in the case where an attractive force is generated between the lower and upper filling members 14a and 14b and / or the user makes contact with the haptic generating device 10 with a predetermined force. It should be at least as large as possible to prevent the lower and upper charge charging members 14a, 14b from contacting and shorting. For example, the spacer 16 may have a height of about 100 μm or more.

In some embodiments, the spacer 16 may be disposed in an annular shape along the upper edge of the lower charge charging member 14a so as to define a void in the central portion thereof. The empty space allows deformation of the charge charging member 14 and the electrode 12 by this force in the case of attraction or repulsion between the lower and upper charge charging members 14a, 14b. The change in height according to the deformation of the charge charging member 14 and the electrode 12 has an effect of further strengthening the tactile change transmitted to the user by the attraction force or repulsive force.

Alternatively, the spacers 16 may be plate-like (eg, transparent glass) rather than annular to define an empty space. In this case, the charge charging member 14 and the electrode 12 are not deformed even if attraction or repulsion occurs between the lower and upper charge charging members 14a and 14b. However, even if the charge charging member 14 and the electrode 12 are not deformed, a touch different from the existing one may be transmitted to the user by attraction or repulsive force acting between the lower and upper charge charging members 14a and 14b. .

2A and 2B illustrate a state in which charges are charged and deformed in the charge charging member 14, respectively. In FIG. 2A, charges of different polarities are charged in the lower and upper charge charging members 14a and 14b. 2B is a case where the lower and upper charge charging members 14a and 14b are charged with the same polarity. Obviously, the polarities of the charges respectively charged in the lower and upper charge charging members 14a and 14b of FIGS. 2A and 2B are exemplary. In addition, although both the lower and upper charge charging members 14a and 14b are shown to be deformed in FIGS. 2A and 2B, depending on the application (eg, when the tactile provision device 10 is attached to and fixed to another device). Only one of the lower and upper charge charging members 14a and 14b may be modified.

Referring to FIGS. 2A and 2B, the lower and upper charge charging members 14a and 14b are charged with charges of different polarities or charges of the same polarity, so as to attract or pull between the lower and upper charge charging members 14a and 14b. It can be seen that the repulsive force is working. The attractive force or repulsive force acting between the lower and upper charge charging members 14a, 14b may itself provide a different tactile feel to the user. When deformation occurs in the charge charging member 14 and the electrode 12 due to attraction or repulsive force, such deformation, that is, a change in the physical height of the tactile provision device 10, is transmitted to the user who touches it. Can further enhance the change.

3A is a cross-sectional view schematically showing the configuration of a tactile feel providing apparatus according to a second embodiment of the present invention. 3A may also be a unit module constituting a film-type touch providing apparatus according to an embodiment of the present invention described below. Referring to FIG. 3A, the tactile providing device 20 includes a pair of electrodes 22, a pair of charge charging members 24, a spacer 26, and a pair of assisting members 27. , And a charge supply unit 28. That is, the touch providing device 20 of FIG. 3A further includes a pair of auxiliary members 27, which is different from the touch providing device 10 according to the first embodiment described with reference to FIGS. 1A and 1B. There is. Hereinafter, the touch providing apparatus 20 of FIG. 3A will be briefly described based on the difference from the touch providing apparatus 10 according to the first embodiment. Therefore, matters not described in detail herein may be equally applied to the above-described first embodiment.

The electrode 22 receives charge from the charge supply unit 28 and transfers the charge to the charge charging member 24. The electrode 22 includes a lower electrode 22a and an upper electrode 22b. The electrode 22 may be formed of a transparent conductive material, but is not limited thereto. The charge supply unit 28 may be connected to the lower electrode 22a and the upper electrode 22b, respectively, to supply charges of different polarities or charges of the same polarity to the lower and upper charge charging members 24a and 24b. Alternatively, the charge supply unit 28 may alternatively supply any one of charges of the same polarity and charges of different polarities to the lower and upper charge charging members 24a and 24b. The spacer 26 is disposed between the lower and upper charge charging members 24a and 24b to space the lower charge charging member 24a and the upper charge charging member 24b by a predetermined distance.

The charge charging member 24 serves as a charger for storing the electric charge supplied through the electrode 22 and includes a lower charge charging member 14a and an upper charge charging member 14b. The charge charging member 14 may be formed of cellulose acetate, which is an amorphous material having charge charging properties and having a transparent polymer, such as a porous sponge structure.

According to this embodiment, both the lower charge charging member 24a and the upper charge charging member 24b have a relatively thin thickness, for example, a thickness of 200 mu m or less. This thickness of the polymer is low in stiffness, making feedback difficult to convey effectively to the user. The pair of auxiliary members 27 including the lower auxiliary member 27a and the upper auxiliary member 27b is intended to compensate for this. That is, the auxiliary member 27 increases the strength of the tactile provision device 20 so that feedback of sufficient magnitude can be transmitted to the user. Therefore, the auxiliary member 27 is preferably formed of a hard material having a certain level or more of strength. The auxiliary member 27 may be formed of a transparent material according to an application, in which case the auxiliary member 27 may be formed of glass.

3B and 3C show a state in which charges are charged and deformed in the charge charging member 24. FIG. 3B shows charges of different polarities charged in the lower and upper charge charging members 24a and 24b, respectively. 3C shows a case where the lower and upper charge charging members 24a and 24b are charged with the same polarity. It is apparent that the polarities of the charges respectively charged in the lower and upper charge charging members 24a and 24b of FIGS. 3B and 3C are exemplary. 3B and 3C, the lower and upper charge charging members 24a and 24b as well as the auxiliary member 27 are shown as being deformed, but this is also illustrative.

3B and 3C, the lower and upper charge charging members 24a and 24b are charged with charges of different polarities or charges of the same polarity, so as to attract or pull between the lower and upper charge charging members 24a and 24b. It can be seen that the repulsive force is working. Like the first embodiment described above, the attractive force or repulsive force acting between the lower and upper charge charging members 24a and 24b may themselves provide a different tactile feeling to the user. When deformation occurs in the charge charging member 24, the auxiliary member 27, and the electrode 22 by the attraction force or the repulsive force, such deformation, that is, a change in the physical height of the tactile provision device 20, is caused. The change in the touch transmitted to the user who touches can be further enhanced.

3B and 3C, since the tactile provision device 20 according to the second embodiment has a small thickness of the charge charging member 24, the electrostatic force (human or The degree of warpage of each of the charge charging members 24 by the repulsive force is greater than that of the charge charging members 14 (see FIGS. 2A and 2B of the first embodiment). However, in the case where the thickness of the charge charging member 24 is thin as compared to the force pressed by the user, it is difficult to transmit the attraction force or repulsive force generated between the lower and upper charge charging members 24a and 24b to the user. The auxiliary member 27 serves to increase the feedback provided to the user by increasing the inertia change when the attraction or repulsive force is generated between the lower and upper charge charging members 24a and 24b.

4A is a cross-sectional view schematically showing the configuration of a tactile feel providing apparatus according to a third embodiment of the present invention. 4A may also be a unit module constituting a film-type touch providing apparatus according to an exemplary embodiment of the present invention described below. Referring to FIG. 4A, the tactile providing device 30, like the tactile providing device 20 of FIG. 3A, has a pair of electrodes 32, a charge charging member 34, a spacer 36, and an auxiliary member 37. ), And a charge supply unit 38. Hereinafter, the touch providing apparatus 30 of FIG. 3A will be briefly described based on the differences from the touch providing apparatuses 10 and 20 according to the first and second embodiments. Therefore, the matters not described in detail herein may be equally applicable to the above-described first and second embodiments.

The tactile provision device 30 according to the present embodiment is different from the tactile provision devices 10 and 20 of the first and second embodiments in that the charge charging member 34 and the spacer 36 are integrally formed of the same material. There is a difference. The charge charging member 34 and the spacer 36 may be formed of, for example, a polymer having a predetermined thickness and having a void formed therein. Alternatively, a transparent glass plate or the like may be interposed therein (the voided portion of FIG. 4A). In this case, the portion of the polymer located below the void and neighboring the lower electrode 32a corresponds to the lower charge charging member 34a, and the portion of the polymer located above the void and neighboring the upper electrode 32b. This corresponds to the upper charge charging member 34b. The portion of the void that surrounds the void corresponds to the spacer 36.

In addition, in the tactile providing device 30 according to the present embodiment, the auxiliary member 37 is present only on the upper electrode 32b, and thus the auxiliary member is not present under the lower electrode 32a. There is a difference from the providing device 20. As described above, since the auxiliary member 37 has a rigidity of a predetermined size and functions to efficiently transmit the tactile change to the user, the auxiliary member 37 does not need to be disposed on the side where the user does not contact. It may be. In addition, when the thickness of the lower charge charging member 34a is sufficiently thick as in the first embodiment, or when the tactile provision device 30 is disposed to be attached on the upper side of another device, the auxiliary electrode is provided under the lower electrode 32a. The member may be unnecessary.

The electrode 32 receives charge from the charge supply unit 38 and transfers the charge to the charge charging member 34. The electrode 32 includes a lower electrode 32a and an upper electrode 32b. The charge supply unit 38 may be connected to the lower electrode 32a and the upper electrode 32b, respectively, to supply charges of different polarities or charges of the same polarity to the lower and upper charge charging members 34a and 34b. Alternatively, the charge supply unit 38 may alternatively supply any one of charges of the same polarity and charges of different polarities to the lower and upper charge charging members 34a and 34b.

4B and 4C are diagrams illustrating a state in which the charge is charged and deformed in the charge charging member 34. FIG. 4B is a view in which charges of different polarities are charged in the lower and upper charge charging members 34a and 34b. 4C shows a case where charges of the same polarity are charged in the lower and upper charge charging members 34a and 34b. It is apparent that the polarities of the charges respectively charged in the lower and upper charge charging members 34a and 34b of FIGS. 4B and 4C are exemplary. 4B and 4C, the lower and upper charge charging members 34a and 34b as well as the auxiliary member 37 are shown as being deformed, but this is also illustrative.

4B and 4C, the lower and upper charge charging members 34a and 34b are charged with charges of different polarities or charges of the same polarity, so as to attract or pull between the lower and upper charge charging members 34a and 34b. It can be seen that the repulsive force is working. Like the first and second embodiments described above, the attractive force or repulsive force acting between the lower and upper charge charging members 34a, 34b may themselves provide a different tactile feel to the user. When deformation occurs in the charge charging member 34, the auxiliary member 37, and the electrode 32 due to attraction or repulsive force, such deformation, that is, a change in the physical height of the tactile provision device 30, is caused. The change in the touch transmitted to the user who touches can be further enhanced. In addition, the auxiliary member 37 serves to increase the feedback provided to the user by increasing the inertia change when attraction or repulsive force is generated between the lower and upper charge charging members 34a and 34b.

5A is a cross-sectional view schematically showing the configuration of a tactile feel providing apparatus according to a fourth embodiment of the present invention. 5A may also be a unit module constituting the film-type touch providing apparatus according to an embodiment of the present invention described below. Referring to FIG. 5A, the tactile provision device 40 includes a pair of electrodes 42, an electroactive polymer (EAP) layer 44, an auxiliary member 47, and a charge supply unit 48. The haptic apparatus 40 according to the present embodiment has a common point with the above-described embodiments in that a polymer is interposed between the pair of electrodes 42. However, in the above-described embodiments, the polymer is used as the charging material, but the present embodiment differs in that it uses the property of changing the EAP under an electric field. Hereinafter, the touch providing apparatus 40 of FIG. 5A will be briefly described based on differences from the touch providing apparatuses 10, 20, and 30 according to the first to third embodiments. Therefore, the matters not described in detail herein may be equally applied to the above-described first to third embodiments.

The pair of electrodes 42 form an electric field by a voltage applied from the charge supply unit 48, and includes a lower electrode 42a and an upper electrode 42b. The lower electrode 42a and the upper electrode 42b are connected to the charge supply unit 48, respectively, and a power or charge charging device for supplying charges of different polarities to the lower and upper electrodes 42a and 42b. It may include. In addition, an auxiliary member 47 having rigidity of a predetermined size is disposed on the upper electrode 42b to efficiently transmit a tactile change due to deformation of the EAP layer 44 to the user.

The electroactive polymer constituting the EAP layer 44 is a material in which the shape of the polymer itself causes deformation as an electric field is applied. That is, when the electric field is formed by the difference in potential applied to both ends of the electroactive polymer, the shape changes as the internal structure is deformed. At this time, the total volume of the electroactive polymer does not change. For example, when a voltage is applied across the electroactive polymer, the electroactive polymer can be deformed to increase in length and at the same time become thinner or shorter in length and thicker at the same time. This thickness can be transmitted through the user's hand in contact with the tactile provision device 40, whereby the user can sense the change in tactile feeling. 5B illustrates an example in which the EAP layer 44 is deformed by applying a voltage to the lower and upper electrodes 42 of the tactile provision device 40 of FIG. 5A, and the EAP layer 44 under an electric field. It can be seen that the thickness of) increased.

FIG. 6A is an exploded perspective view schematically illustrating a structure of a film-type touch providing device according to an embodiment of the present invention, and FIG. 6B is a cross-sectional view taken along the line YY ′ of FIG. 6A. The film-type tactile providing device 110 shown in FIGS. 6A and 6B may be a device in which the tactile providing device 10 of the first embodiment described above is arranged in an array of 3 × 3 as a unit module. It is an example. 6A and 6B, illustrations of the charge supply unit 18 of the tactile provision device 10 are omitted for convenience of illustration. 6A and 6B, the configuration of the film-type tactile feel providing device including the tactile feel providing devices 20, 30, and 40 as the unit module according to the second to fourth embodiments may also be derived. Detailed illustration and description thereof will also be omitted.

6A and 6B, the film-type touch providing device 110 may include a lower electrode 112a, a lower charge charge member 114a, a spacer 116, an upper charge charge member 114b, and an upper electrode 112b. ). In the present embodiment, the lower electrode 112a has a sheet shape as a whole, but the upper electrode 112b is formed in pieces in units of modules. This is just one embodiment of the structure for supplying charge such that attraction or repulsion can act between the lower and upper charge charging members 114a and 114b on a modular basis. Therefore, the present exemplary embodiment is not limited thereto, and the shapes of the lower electrode 112a and the upper electrode 112b may be opposite to each other, or the lower electrode 112a may be formed by operation of each module. Alternatively, the lower electrode 112a may have a shape in which a plurality of conductive lines extending in a first direction are arranged, and the upper electrode 112b may have a plurality of conductive lines extending in a second direction perpendicular to the first direction. It may have a shape.

In addition, the film-type touch providing device 110 may further include a module separating member 115. The module separating member 115 is to physically isolate each of the unit modules constituting the film-type tactile providing device 110, that is, each of the tactile providing devices 10 (see FIG. 1) of FIG. 1. This module-specific isolation structure is intended to prevent the physical force (electrostatic attraction or repulsive force) and / or the resulting deformation occurring in any one module from propagating to neighboring modules. According to this, it is more effective to implement tactile localization in the film-type tactile feel providing device 110.

To achieve this purpose, the module separating member 115 is formed of a material having at least electrical insulating properties. The module isolation member 115 is arranged to isolate at least the neighboring charge charging members 114 from each other. For example, as shown in FIG. 6B, the module isolation member 115 has a height adjacent to the lower charge charging member 114a, the spacer 116, the upper charge charging member 114b, and the upper electrode 112b. And may be disposed between adjacent modules. In addition, the module separation member 115 is preferably formed of a transparent material. For example, the module separating member 115 may be formed of glass, a transparent polymer, or the like.

The film-type touch providing device according to the embodiment of the present invention described above may be used as one component of a touch screen capable of providing a touch to a user. The film-like tactile providing device may be the device shown in FIGS. 6A and 6B, but is not limited thereto. For example, the film-type tactile feel providing device is arranged in M ㅧ N (M and N are each an integer of 2 or more) rather than unit modules arranged in 3 ㅧ 3, and / or the unit module is in the tactile sense of the first embodiment described above. It may not be a providing device but a tactile feel providing device in any one of the second to fourth embodiments.

7A and 7B are views illustrating a schematic configuration of a touch screen according to an embodiment of the present invention, respectively. 7A and 7B only show conceptually the modules constituting the touch screen. This embodiment is intended to show that the film-type tactile providing device can be used as one component of the touch screen. This is because there are no special restrictions on how to implement.

Referring to FIGS. 7A and 7B, the touch screens 200a and 200b include flat panel displays 210a and 210b, film type tactile providing devices 220a and 220b, and touch panels 230a and 230b. Here, the film-type tactile providing device 220 includes the tactile providing devices of the first to fourth embodiments as a unit module, and is formed of an entirely transparent material to be used in the touch screens 200a and 200b. Self-explanatory However, the arrangement of the configuration modules of the touch screens 200a and 200b illustrated in FIGS. 7A and 7B is different. For example, in the touch screen 200a illustrated in FIG. 7A, the touch panel 230a is disposed on the flat panel display 210a, and the film-type touch providing apparatus 220a is disposed on the touch panel 230a. . On the other hand, in the touch screen 200b illustrated in FIG. 7B, the film type tactile providing device 220b is disposed on the flat panel display 210b, and the touch panel 230b is disposed on the film tactile providing device 220b. have. However, it is preferable that the latter touch screen 200b has a feature that the touch panel 230b is flexible, and that the local deformation of the film-type tactile providing device 220b is performed by the users through the touch panel 230b. It is intended to be delivered efficiently to the modified touch.

The above description is only an example of the present invention, and the technical idea of the present invention should not be interpreted as being limited by this embodiment. The technical idea of the present invention should be specified only by the invention described in the claims. Therefore, it is apparent to those skilled in the art that the above-described embodiments may be modified and embodied in various forms without departing from the technical spirit of the present invention.

12, 22, 32, 42, 112: electrode
14, 24, 34, 114: charge charging member
16, 26, 36, 116: spacer
18, 28, 38, 48, 118: charge supply unit
27, 37: secondary member
44: EAP layer
210a, 210b: Flat Panel Display
220a, 220b: film type tactile feel providing device
230a, 230b: touch pad

Claims (20)

A first electrode;
A first charge charging member disposed on the first electrode;
A second charge charging member spaced apart from the first charge charging member;
A spacer disposed therebetween so as to space the first charge charging member and the second charge charging member apart from each other;
A second electrode disposed on the second charge charging member; And
And a charge supply unit connected to the first electrode and the second electrode to supply electric charge, respectively. The method of claim 1,
And the spacer is disposed along edges of the first and second charge charging members to define a void at a central portion thereof. The method of claim 1,
And the first and second charge-charging members are formed of an amorphous material having a porous sponge structure. The method of claim 3,
Wherein said amorphous material comprises cellulose acetate. The method of claim 1,
And the charge supply unit supplies charge of the same polarity or charge of the opposite polarity to the first electrode and the second electrode. The method of claim 5,
And the charge supply unit selectively supplies any one of charges of the same polarity and charges of the opposite polarity to the first electrode and the second electrode. The method of claim 1,
And wherein the first and second electrodes, the first and second charge charging members, and the spacer are all formed of a transparent material. The method of claim 1,
And a first auxiliary member disposed on the second electrode and formed of a material having a rigidity greater than that of the second charge charging member. 9. The method of claim 8,
And a second auxiliary member disposed under the first electrode and formed of a material having greater rigidity than the first charge charging member. 10. The method of claim 9,
And wherein the first and second electrodes, the first and second charge charging members, the spacer, and the first and second auxiliary members are all formed of a transparent material. The method of claim 1,
And the first charge charging member, the spacer, and the second charge charging member are formed of the same material. The method of claim 11,
And the first charge charging member, the spacer, and the second charge charging member are integrally formed. A plurality of tactile provision modules arranged in an array; And
A transparent module separating member disposed between adjacent tactile providing modules to individually isolate the plurality of tactile providing modules,
Each of the plurality of tactile providing modules
A transparent first electrode;
A first charge charging member disposed on the first electrode and transparent;
A transparent spacer disposed along an upper edge of the first charge charging member to define a void at a central portion thereof;
A transparent second charge charging member disposed on the spacer to cover at least an upper side of the empty space;
A transparent second electrode disposed on the second charge charging member; And
And a charge supply unit connected to the first electrode and the second electrode to supply charge, respectively. The method of claim 13,
And the first and second charge filling members are formed of an amorphous material having a porous sponge structure. The method of claim 13,
And the charge supply unit supplies charge of the same polarity and / or charge of the opposite polarity to the first electrode and the second electrode. The method of claim 13,
And a first auxiliary member disposed on the second electrode and formed of a material having a rigidity greater than that of the second charge charging member. The method of claim 13,
One electrode of the first electrode and the second electrode is a film-type tactile feel providing device, characterized in that formed integrally across the plurality of tactile feel providing module. Flat panel display;
The film-type tactile feel providing device of claim 13 disposed on the flat panel display; And
And a transparent touch panel disposed on the film-type tactile feel providing device. 19. The method of claim 18,
And the touch panel is flexible. Flat panel display;
A transparent touch panel disposed on the flat panel display; And
A touch screen comprising the film-type tactile feel providing device of claim 13 disposed on the touch panel.
KR1020120055620A 2011-06-02 2012-05-24 Film type apparatus for providing haptic feedback and touch screen including the apparatus KR20120135049A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110892362A (en) * 2017-07-14 2020-03-17 森赛格公司 Active element structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110892362A (en) * 2017-07-14 2020-03-17 森赛格公司 Active element structure
CN110892362B (en) * 2017-07-14 2023-10-20 原相科技股份有限公司 Active element structure

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