KR101426809B1 - Case for personal portable device having capacitance type touch panel - Google Patents

Abstract

Disclosed is a case with a capacitance type touch panel for a personal portable terminal, which can provide convenience of use, improve the commercial value of the product, and increase consumer satisfaction. An accessory case with a capacitance type touch panel for protecting a personal portable terminal comprises a mounting part mounted on the personal portable terminal and a resistive cover member connected to the mounting part and detecting a touch operation of an object through a resistive type method, and detects the touch operation of the object by a resistive cover member in the state of the resistive cover member arranged to be overlapped on the touch panel.

Description

[0001] CASE FOR PERSONAL PORTABLE DEVICE HAVING CAPACITANCE TYPE TOUCH PANEL [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an accessory for a personal portable terminal, and more particularly, to a case for a portable personal terminal having a capacitive touch panel capable of sensing a touch operation in a capacitive touch panel.

2. Description of the Related Art Generally, personal portable terminals can be easily carried by anyone, and their use is becoming commonplace because they are convenient to use freely anywhere.

The personal portable terminal has been used for wireless voice communication. However, as the functional area is gradually diversified, it has been developed to have various additional functions such as game, MP3, etc. in addition to basic voice communication function.

In addition, since the portable portable terminal has high space utilization and convenience of use, mounting of a touch panel such as a touch screen or a touch pad is becoming common. That is, the touch panel can simultaneously perform functions of a display unit for outputting information and an input unit for inputting a signal. Such a touch panel is largely classified into a capacitive type, a resistive type (decompression type), an infrared ray detection type, .

Among them, a capacitive touch panel (hereinafter referred to as a capacitive touch panel) is a structure in which a plate is placed on a substrate and a voltage is applied to the plate, and when a human hand touches the plate, The principle of detecting the parasitic capacitance and determining the position coordinates thereof is operated.

Meanwhile, in recent years, personal portable terminals have been provided so that the touch panel is directly exposed to the outside for convenience of use, but the touch panel is easily damaged by an external impact or the like. Conventionally, a separate cover or case is used to protect the touch panel.

However, since the touch operation of the target object can not be recognized in a state where the cover or the case is disposed on the front surface of the electrostatic touch panel, there is a problem that the touch panel must be operated after opening the cover or case.

Conventionally, a transparent window capable of electrostatic touch operation is provided on a cover or a case, and a touch function of a touch panel can be operated through a transparent window in a state in which a cover or case is disposed to cover the front surface of the touch panel . However, the electrostatic touch operation through the existing transparent window is not only very low in touch recognition performance, but also in response to a conductor such as a human hand, touching an object having a small capacitance, or a non- There is a problem in that the touch operation can not be normally recognized.

Accordingly, a touch panel and an accessory that can provide ease of use and enhance the touch recognition performance have been recently reviewed.

The present invention provides a case for a portable personal terminal having a capacitive touch panel capable of sensing a touch operation of an object in a state that a cover is disposed to cover the touch panel.

The present invention also provides a case for a personal portable terminal having a capacitive touch panel capable of sensing a touch operation of a non-conductive object or a non-conductive object with a cover disposed to cover the front surface of the touch panel.

In addition, the present invention provides a case for a portable personal terminal having a capacitive touch panel that can provide convenience in use and can enhance consumer satisfaction.

According to another aspect of the present invention, there is provided an accessory case for protecting a personal portable device having a capacitive touch panel, the accessory case including: a mounting part mounted on the personal portable device; And a touch operation of the object is sensed through the pressure sensitive cover member in a state where the pressure sensitive cover member is disposed on the touch panel.

As the mounting portion, various mounting portions may be used depending on the required conditions and design specifications, and the present invention is not limited or limited by the type and characteristics of the mounting portion. In one example, the mounting portion may include a case body and a connecting member.

The case body may be provided to surround the back surface and / or the side surface of the terminal. The pressure-sensitive cover member may be rotatably connected to the case body via the connection member, and may be rotated to a position overlapping the front surface of the touch panel with respect to the connection member, or rotated to a position overlapping the back surface of the terminal. In some cases, the pressure sensitive cover member may be detachably connected to the connecting member.

The pressure-sensitive cover member can be provided in various structures capable of sensing the touch operation of the object under reduced pressure, and the present invention is not limited or limited by the structure and characteristics of the pressure-sensitive cover member. For example, the pressure-sensitive cover member may include a first transparent substrate, a first conductive layer formed on one surface of the first transparent substrate, a second transparent substrate provided to be spaced apart from the first transparent substrate, And a second conductive layer formed on one surface of the transparent substrate.

The first conductive layer and the second conductive layer may be formed of a conductive material and a transparent material. The present invention is not limited or limited by the types and characteristics of the first conductive layer and the second conductive layer. For example, the first conductive layer and the second conductive layer may be formed using indium tin oxide (ITO), IZO, or the like.

For reference, the first conductive layer and the second conductive layer may be formed in a film form or in a predetermined pattern form. Also, the first conductive layer and the second conductive layer may be formed using metal fibers such as silver nano fibers, and the first conductive layer and the second conductive layer, which are formed using the metal fiber solution, The metal fibers of the fibrous metal are connected to each other even though they are formed to be very thin, so that they can maintain high conductivity and can be formed to have a very thin thickness of 1 占 퐉 or less. Alternatively, a metal mesh having a thickness of about 10 mu m or less may be applied instead of the first conductive layer and the second conductive layer.

It is also possible that the first conductive layer and the second conductive layer are formed using an aluminum thin film. When the first conductive layer and the second conductive layer are formed of an aluminum foil, the first conductive layer and the second conductive layer may have a semi-transmissive property such as a half mirror. When the touch panel is not illuminated The mirror effect can be exhibited by the first conductive layer and the second conductive layer.

The first conductive layer and the second conductive layer may be connected to the connection portion, and the first and second conductive layers may be electrically connected to each other via the connection portion.

The connections may be provided in a variety of ways depending on the required conditions and design specifications. For example, the connection portion may be formed on the inner surface of the case body of the mounting portion, and the terminal and the connection portion may be electrically connected when the case body is coupled to the terminal. To this end, a connection terminal that can be electrically connected to the connection portion may be provided on the back surface of the terminal, and the present invention is not limited or limited by the type and characteristics of the connection terminal. For reference, the connecting portion connected to the first conductive layer and the second conductive layer is electrically connected to the terminal. It is understood that signals sensed through the first conductive layer and the second conductive layer can be controlled through the terminal .

The pressure sensitive type cover member may be provided with a pressure sensitive type touch window for sensing the touch operation of the object in a depressurized manner, and the pressure sensitive type touch window may be provided corresponding to all or part of the pressure sensitive type cover member.

According to another aspect of the present invention, there is provided a casing for a portable personal terminal having an electrostatic touch panel, the casing including a mounting portion, a pressure sensitive cover member, and a pressure sensitive cover member for calibrating the pressure sensitive touch coordinates to reference coordinates of the touch panel, and a calibration part.

When the pressure sensitive cover member and the touch panel do not coincide with each other, the calibration section can calibrate the pressure sensitive touch coordinates by the pressure sensitive cover member to the reference coordinates of the touch panel. Here, the state where the pressure-sensitive cover member and the touch panel do not coincide can be understood as a state in which the pressure-sensitive cover member is arranged with respect to the touch panel, or the pressure-sensitive cover member is disposed at an upper portion or a left-

The calibration part can be provided in various structures according to the required conditions and design specifications. As an example, the calibration section may be configured to include at least one of a plurality of calibration points or calibration lines.

The calibration unit may be formed of a conductive material capable of detecting a capacitance change in the touch panel and may be provided on the inner surface of the pressure sensitive cover member. Accordingly, when the pressure-sensitive cover member is disposed to cover the touch panel, when the touch panel senses the coordinates of the calibration unit, the pressure-sensitive touch coordinates of the pressure-sensitive cover member are corrected to the reference coordinates of the touch panel based on the calibration coordinates of the calibration unit can do. Here, the pressure-sensitive touch coordinates of the pressure-sensitive cover member can be understood as coordinates detected by the pressure-sensitive cover member when the pressure-sensitive cover member is touched, and the reference coordinates of the touch panel include basic coordinates of the touch panel, , It can be understood as a coordinate detected by a capacitance change when touching a touch panel.

In the present invention, a personal portable device is a portable electronic device such as a PDA (Personal Digital Assistant), a smart phone, a handheld PC, a mobile phone, an MP3 player, A predetermined communication module such as a Code Division Multiplexing Access (CDMA) module, a Bluetooth module, an infrared communication module (IrDA), and a wired or wireless LAN card may be provided. By mounting a predetermined microprocessor, The term " terminal "

According to the case for the personal portable terminal having the electrostatic touch panel according to the present invention, the touch operation of the object can be sensed while the cover is disposed to cover the touch panel.

According to the present invention, a touch operation of a non-conductive object or a non-conductive object can be sensed while a cover is disposed to cover a front surface of the touch panel.

Particularly, according to the present invention, it is possible to detect a touch operation of a target object by using a pressure-sensitive cover member in a state in which a cover is disposed to cover the touch panel. Thus, The touch operation of the nonconductive conductor can be accurately detected.

In addition, according to the present invention, since the pressure sensitive cover member can be simply disposed on the front surface of the touch panel without structural modification of the capacitive touch panel itself, the structure is simple and applicable to various existing capacitive touch panels .

According to the present invention, even if the pressure-sensitive cover member is disposed on the touch panel in an inconsistent manner, the pressure-sensitive touch coordinates of the pressure-sensitive cover member can be calibrated to the reference coordinates of the touch panel using the calibration unit.

Further, according to the present invention, there is an advantage that it is possible to provide convenience in use and to enhance the satisfaction of consumers.

1 and 2 are perspective views illustrating a case for a portable personal terminal having a capacitive touch panel according to the present invention.
3 and 4 are views for explaining the structure and operating structure of a case for a portable personal terminal having the capacitive touch panel according to the present invention.
5 is a view for explaining a modified example of a case for a portable personal terminal having the electrostatic touch panel according to the present invention.
6 to 8 are views for explaining a case for a portable personal terminal having a capacitive touch panel according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments. For reference, the same numbers in this description refer to substantially the same elements and can be described with reference to the contents described in the other drawings under the above-mentioned rules, and the contents which are judged to be obvious to the person skilled in the art or repeated can be omitted.

1 and 2 are perspective views illustrating a case for a portable personal terminal having an electrostatic touch panel according to the present invention, and FIGS. 3 and 4 are views showing a structure of a case for a portable personal terminal having the capacitive touch panel according to the present invention. And an operation structure. 5 and 6 are views for explaining a variation of a case for a portable personal terminal having the electrostatic touch panel according to the present invention.

1 to 4, a case for a portable personal terminal having an electrostatic touch panel according to the present invention includes a mounting portion 100 and a pressure-sensitive cover member 200.

As the mounting portion 100, various mounting portions 100 may be used according to the required conditions and design specifications, and the present invention is not limited or limited by the type and characteristics of the mounting portion 100. [ For example, the mounting portion 100 may include a case body 110 and a connecting member 120.

The case body 110 may be formed of a common synthetic resin or a metal material and may be provided to surround the back surface and / or the side surface of the terminal 10. In some cases, a case body made of an elastic material such as urethane may be used, and the present invention is not limited or limited by the material and characteristics of the case body 110. For example, the case body 110 is provided in a structure similar to that of the battery case that is coupled to the back of the terminal, and can be used instead of the battery case.

The connecting member 120 may be provided to connect the case body 110 to the pressure-sensitive cover member 200. For example, the connecting member 120 may be provided as a flexible material and may be connected to the case body 110 so as to be fluidly connected thereto, and the pressure-sensitive cover member 200 may be connected to the case body 110 via the connecting member 120 Can be connected. In some cases, the connecting member may be constructed using a conventional rotating means such as a link member, a rotating shaft, or the like.

The pressure sensitive cover member 200 may be rotatably connected to a side surface of the case body 110 via the connection member 120 and may be disposed at a position overlapping the front surface of the touch panel 12 with respect to the connection member 120. [ Or may be rotated to a position overlapping with the back surface of the terminal 10. In some cases, the pressure-sensitive cover member is drawn out from the mounting portion in a sliding manner, and then overlapped on the front surface of the touch panel.

For reference, in the embodiment of the present invention, the pressure-sensitive cover member 200 is integrally connected to the connection member 120, but in some cases, the pressure-sensitive cover member may be detachably connected to the connection member. (Not shown), for example, an adhesive layer may be provided on one side of the pressure sensitive type cover member, and the pressure sensitive type cover member may be selectively detached and attached to the connection member by an adhesive layer. For reference, the adhesive layer may be a conventional adhesive material capable of maintaining adhesiveness even by repeated attachment and detachment, and the present invention is not limited or limited by the structure and characteristics of the adhesive layer. Since the pressure-sensitive cover member can be detached from the mounting portion, the pressure-sensitive cover member can be easily detached when the pressure-sensitive cover member is not used.

The pressure-sensitive cover member 200 is disposed to be superimposed on the front surface of the touch panel 12 via the connection member 120, and is provided to depressurize the touch operation of the object.

The pressure-sensitive cover member 200 may be provided in various structures capable of sensing the touch operation of the object under reduced pressure, and the present invention is not limited or limited by the structure and characteristics of the pressure-sensitive cover member 200. For example, the pressure sensitive cover member 200 may include a first transparent substrate 210, a first conductive layer 220, a second transparent substrate 230, and a second conductive layer 240.

As the first transparent substrate 210, a transparent synthetic resin film may be used, and other transparent films may be used according to required conditions and design specifications. For reference, the transparent film used as the first transparent substrate 210 may include a slight opaque degree as long as it does not hinder the readability suitable for the use of the touch panel 12 have.

The first conductive layer 220 is formed on the bottom surface of the first transparent substrate 210. The first conductive layer 220 may be formed of a conductive material and a transparent material. The present invention is not limited to the first conductive layer 220 according to the type and characteristics of the first conductive layer 220. For example, the first conductive layer 220 may be formed of ITO (Indium Tin Oxide) or IZO.

For example, the first conductive layer 220 may be formed as a film on the bottom surface of the first transparent substrate 210, or may be formed in a predetermined pattern. Also, the first conductive layer 220 may be formed using metal fibers such as silver nano fibers, and the first conductive layer 220 formed using the metal fiber solution may be formed to be very thin The fibrous metal fibers are connected to each other, so that they can maintain high conductivity and can be formed to have a very thin thickness of 1 탆 or less. Alternatively, instead of the first conductive layer 220, a metal mesh having a thickness of about 10 mu m or less may be applied.

Also, the first conductive layer 220 may be formed using an aluminum thin film. When the conductive layer is formed of an aluminum foil, the conductive layer may have semi-permeability characteristics such as a half mirror, and the mirror effect can be exhibited by the conductive layer when the touch panel 12 is turned off .

The second transparent substrate 230 is spaced apart from the bottom surface of the first transparent substrate 210. The second transparent substrate 230 may be formed of the same or similar material as the first transparent substrate 210 described above.

The second conductive layer 240 is formed on the upper surface of the second transparent substrate 230 to face the first conductive layer 220. The second conductive layer 240 may be formed of the same or similar material as the first conductive layer 220 described above.

A spacer 250 may be provided between the first transparent substrate 210 and the second transparent substrate 230 to support the first conductive layer 220 and the second conductive layer 240 apart from each other. have. The spacers 250 may be spaced apart from the second conductive layer 240 so that the first conductive layer 220 may be separated from the second conductive layer 240 So as to be spaced apart. For example, the spacer 250 may be formed of a non-conductive material, and may be spaced apart from the upper surface of the second conductive layer 240 facing the first conductive layer 220, . For reference, the size and spacing of the spacers 250 can be appropriately changed according to required conditions and design specifications.

In addition, the edge portions of the first transparent substrate 210 and the second transparent substrate 230 facing each other can be sealed by a conventional adhesive layer (not shown).

The connection part 260 may be connected to the first conductive layer 220 and the second conductive layer 240 and may be connected to the portable terminal 10 and the first conductive layer 220 through the connection part 260. [ And the second conductive layer 240 may be electrically connected.

The connection portion 260 may be provided in various ways according to the required conditions and design specifications. For example, the connection portion 260 may be formed on the inner surface of the case body 110 of the mounting portion 100. When the case body is coupled to the back surface of the terminal 10, the terminal and the connection portion 260 are electrically Can be connected. To this end, a connection terminal (not shown) which can be electrically connected to the connection portion 260 may be provided on the back surface of the terminal 10, and the present invention is not limited or limited by the type and characteristics of the connection terminal.

The connecting portion 260 connected to the first conductive layer 220 and the second conductive layer 240 is electrically connected to the terminal 10 by connecting the first conductive layer 220 and the second conductive layer 240, It can be understood that the signal sensed through the terminal 240 can be controlled through the terminal 10. [

4, when the pressure-sensitive cover member 200 is disposed so as to cover the touch panel 12, the first conductive layer 220 and the second conductive layer 220 are touched by a touch operation from the outer surface of the pressure- The touch operation of the target object can be detected by detecting an electrical signal (e.g., voltage) generated in the first conductive layer 220 and the second conductive layer 240 as the second conductive layer 240 is contacted .

On the other hand, when the pressure sensitive cover member 200 is opened and the touch panel 12 is exposed to the outside, the touch operation of the object can be sensed by detecting the capacitance change due to the touch operation of the touch panel 12.

5 is a view for explaining a modified example of a case for a portable personal terminal having the electrostatic touch panel according to the present invention. In addition, the same or equivalent portions as those in the above-described configuration are denoted by the same or equivalent reference numerals, and a detailed description thereof will be omitted.

5, the housing of the terminal 10 may be formed of a metal material, and the mounting portion 1110 may be formed in a substantially bar shape using magnets, and may be attached to the side surface of the housing by magnetic force. have.

The pressure-sensitive cover member 1200 may be rotatably connected to the mounting portion 1110 using a conventional rotary shaft and a hinge means, and the pressure-sensitive cover member 1200 may be rotated and selectively opened and closed on the front surface of the touch panel 12 .

6 to 8 are views for explaining a case for a portable personal terminal having a capacitive touch panel according to another embodiment of the present invention. In addition, the same or equivalent portions as those in the above-described configuration are denoted by the same or equivalent reference numerals, and a detailed description thereof will be omitted.

For reference, in the above-described embodiments of the present invention, the entire pressure-sensitive cover member is configured to detect the touch operation of the object in a depressurized manner. However, in some cases, only a part of the pressure- As shown in FIG.

6, a case for a portable personal terminal having an electrostatic touch panel according to another embodiment of the present invention includes a mounting portion (see 100 in FIG. 1), a pressure sensitive cover member 2200, and the pressure sensitive cover member 2200 And a calibrating part 3000 for calibrating the pressure sensitive touch coordinates by the touch panel.

The pressure-sensitive cover member 2200 is provided with a pressure-sensitive touch window 2201 for sensing a touch operation of a subject in a depressurized manner. The pressure-sensitive touch window 2201 is provided to correspond to a part of the pressure-sensitive cover member 2200. The size and position of the pressure-sensitive touch window 2201 can be appropriately changed according to required conditions and design specifications.

When the pressure sensitive cover member 2200 and the touch panel do not coincide with each other, the calibration unit can calibrate the pressure sensitive touch coordinates of the pressure sensitive cover member 2200 to the reference coordinates of the touch panel. Here, the state where the pressure-sensitive cover member 2200 and the touch panel do not coincide with each other can be understood as a state in which the pressure-sensitive cover member 2200 is twisted with respect to the touch panel, or is disposed at an upper portion or a left-right position.

The calibration unit 3000 may be provided in various structures according to required conditions and design specifications. For example, the calibration unit 3000 may include a plurality of calibration points. Hereinafter, an example in which four calibration points are provided as the calibration unit 3000 will be described. It is also possible in some cases to provide 2 to 3 or more than 5 calibration points.

The calibration unit 3000 may be formed of a conductive material capable of sensing a capacitance change in the touch panel and may be provided on the inner surface of the pressure sensitive cover member 2200. Accordingly, when the pressure-sensitive cover member 2200 is disposed to cover the touch panel, when the touch panel senses the coordinates of the calibrating unit, the pressure-sensitive cover member 2200 is positioned on the basis of the calibration coordinates of the calibrating unit 3000, The pressure sensitive touch coordinates of the touch panel can be corrected to the reference coordinates of the touch panel.

6 and 7, in a state in which the pressure-sensitive cover member 2200 and the touch panel are arranged to coincide with each other, the touch coordinates of the pressure-sensitive cover member 2200 and the reference coordinates of the touch panel are the same. However, when the pressure-sensitive cover member 2200 is arranged to be crooked relative to the touch panel, the pressure sensitive touch coordinates sensed by the pressure-sensitive cover member 2200 and the reference coordinates of the touch panel do not coincide with each other.

In the present invention, by comparing the reference coordinates (S1 to S4) of the predetermined calibration unit 3000 with the calibration coordinates (S1 'to S4') of the calibration unit, the non-matching state of the pressure sensitive type cover member (2200) Sensitive touch coordinates of the pressure sensitive cover member 2200 by the difference between the reference coordinates S1 to S4 of the calibration unit 3000 and the calibration coordinates S1 'to S4' of the calibration unit 3000, Of the reference point.

Here, the pressure-sensitive touch coordinates of the pressure-sensitive cover member 2200 can be understood as coordinates detected by the pressure-sensitive cover member 200 when the pressure-sensitive cover member 2200 is touched and referred to as reference coordinates of the touch panel Can be understood as the coordinates detected by the basic coordinates of the touch panel, that is, the change in the capacitance when touching the touch panel.

8, the calibration unit 3000 'may be provided including a calibration line. Hereinafter, an example in which a quadrangular closed loop type calibration line is formed as the calibration unit 3000 'will be described. In some cases, a plurality of non-continuously separated calibration lines may be used as the calibration unit.

Although the present invention has been described with reference to the preferred embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the following claims. It can be understood that

10: Personal portable terminal 12: Touch panel
100: mounting portion 110: case body
120: connecting member 200: pressure-sensitive cover member
210: first transparent substrate 220: first conductive layer
230: second transparent substrate 240: second conductive layer
250: spacer 3000:

Claims (10)

An accessory case for protecting a personal portable device having a capacitive touch panel,
A mounting unit mounted on the personal digital assistant; And
A first transparent substrate, a first conductive layer formed on one surface of the first transparent substrate, a second transparent substrate provided so as to be spaced apart from the first transparent substrate, and a second transparent substrate provided on the second transparent substrate, And a pressure sensitive cover member including a second conductive layer formed on one surface of the first conductive layer and connected to the mounting portion,
And a touch operation of the object is sensed through the pressure sensitive cover member when the pressure sensitive cover member is disposed on the touch panel so as to overlap with the touch panel. delete The method according to claim 1,
And a spacer provided between the first transparent substrate and the second transparent substrate and spaced apart from the first conductive layer and the second conductive layer so as to be spaced apart from each other. For the case. The method according to claim 1,
And a connection part for electrically connecting the first conductive layer and the second conductive layer to the personal portable device. 5. The method of claim 4,
Wherein the mounting portion is a battery cover that is replaceably provided on a rear surface of the portable personal terminal,
Wherein the connection portion is provided on the inner surface of the battery cover and is electrically connected to the back surface of the portable personal terminal. The method according to claim 1,
Wherein the first conductive layer and the second conductive layer are provided using at least one of indium tin oxide (ITO), indium zinc oxide (IZO), metal fiber, metal mesh, and aluminum thin film. A case for a personal portable device having a panel. The method according to claim 1,
The pressure-sensitive cover member is provided with a pressure-sensitive touch window for sensing a touch operation of the object in a depressurized manner,
Wherein the pressure sensitive type touch window is provided corresponding to all or a part of the pressure sensitive type cover member. The method according to claim 1,
And a calibrating part for calibrating the pressure sensitive touch coordinates by the pressure sensitive cover member to the reference coordinates of the touch panel. 9. The method of claim 8,
Wherein the calibration unit includes at least one of a plurality of calibration points or calibration lines. 9. The method of claim 8,
Wherein the calibration unit is formed of a conductive material capable of detecting a change in capacitance in the touch panel and is provided on the inner surface of the pressure-
When the pressure sensitive cover member is disposed so as to cover the touch panel, when the touch panel senses the calibration unit, the pressure sensitive touch coordinates are corrected to the reference coordinates of the touch panel on the basis of the calibration coordinates of the calibration unit Wherein the case has an electrostatic touch panel.

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