KR20110005567A

KR20110005567A - Apparatus of flat type keypad for small electronic device and manufacturing method thereof

Info

Publication number: KR20110005567A
Application number: KR1020090063191A
Authority: KR
Inventors: 정의선
Original assignee: 정의선
Priority date: 2009-07-10
Filing date: 2009-07-10
Publication date: 2011-01-18

Abstract

PURPOSE: An integrated key pad of a small electronic device and a manufacturing method thereof are provided to improve the reliability of a product by extending the lifecycle by reducing the malfunctioning factor by reducing the number of components of a key pad. CONSTITUTION: A button assay(100) comprises a button array(102), an adhesive film(104), and a rubber pad(106). The button array selects one out of number, character, and symbol and displays it. A button array(102) is attached on one side of the adhesive film. A dome assay(200) comprises a first optical guiding film(202), a second optical guiding film(204), and a dome array(206).

Description

Integrated keypad of small electronic device and manufacturing method thereof {APPARATUS OF FLAT TYPE KEYPAD FOR SMALL ELECTRONIC DEVICE AND MANUFACTURING METHOD THEREOF}

The present invention relates to a keypad for inputting information or a control command to a small electronic device, and in particular, to reduce the manufacturing process, reduce the failure rate, and reduce the price while reducing the thickness of the keypad. It is about.

Recently, as electronic devices are cheaper and more demanded due to the development of parts production technology and mass production, many people own one or more high-performance electronic devices that many people want, and some electronic devices are always carried by preference. Such portable electronic devices include, for example, MP3s, electronic cameras, mobile phones for mobile communication, recorders, notebook computers, data terminals, and the like. Such an electronic device or electronic device is a keyboard or key pad (hereinafter, referred to as a 'keypad') for inputting on / off, selection, adjustment, control command (command), data, etc. for use. It is common to have

Due to the small size and light weight of electronic devices, the area or volume that a keypad can occupy is gradually decreasing. In particular, it is common to use a finger to input a command including data, so that each button constituting the keypad can be touched. A minimum area must be formed. That is, since the keypad has a small size and light weight, there is a limitation in reducing the occupied area, and thus development of the keypad is focused on reducing the thickness.

1 is a plan view of a keypad according to an example of a general mobile phone terminal.

Hereinafter, with reference to the accompanying drawings in detail, for example, a keypad for inputting a signal such as a call number, a message and a command to a mobile communication terminal is a button and a button that can be touched with a finger in a limited area is arranged to the maximum; Minimize between buttons and maximize button area.

Since it is a keypad of a communication terminal, characters for inputting text messages are printed together on 12 numeric buttons, and are further provided with ON, OFF and FUNCTION KEY. In addition, a navigation key NAVIGATION KEY, a function key for another purpose, and the like may be further added.

Fig. 2 is an explanatory diagram of the assembly order of the components of the keypad according to one example of the prior art.

Hereinafter, with reference to the accompanying drawings, the button array (BUTTON ARRAY) 10, the first adhesive film 20, the rubber pad 30, the light guide plate 40, the second adhesive film 22, A dome array (DOME ARRAY) 50, the third adhesive film 24, LED (LED) 60, a printed circuit board (PCB) 70 is a configuration that includes.

The button array 10 is made of plastics, metals, or the like, and is hard, thin plate-shaped, and a plurality of buttons are regularly arranged according to a predetermined standard. The first adhesive film 20 is a very thin double-sided adhesive tape (TAPE) and may have a color by selection. The rubber pad 30 is a chemical polymer containing a silicon element made in the form of a fluid, resin, or elastomer, and is called silicone (SI) or polysiloxane (POLYSILOXANE) and is a kind of chemical rubber having good elasticity and flexibility. It's kind. The button array 10, the first adhesive film 20, and the rubber pad 30 are assembled to form a button assembly (BUTTON ASSEMBLY; ASSY). LIGHT GUIDE PLATE (LGP) 40 allows the illumination of the backlight to be attached to the back side to be uniformly dispersed to emit a constant brightness. The second adhesive film 22 has the same material and function as the first adhesive film 20 and uses a transparent base color of the film. Dome array (DOME ARRAY) 50 is a small hemispherical elastic good conductive metal (50). The metal used for each dome of the dome array 50 is generally used by using tungsten for elasticity and copper plating for conductivity, and may be used in other kinds of metals and without plating. The third adhesive film 24 has the same material and function as the first and second adhesive films 20 and 22, and the base color of the film is not particularly limited, and is located at each dome of the dome array 50. Where the light-emitting LED 60 is located to form a hole of a certain size. LIGHT EMITTING DIODE (LED) 60 generates light when operating power is supplied. PCB (PCB: PRINTED CIRCUIT BOARD) 70 forms a pattern (PATTERN) 72 by a predetermined electronic circuit, has a line or path through which electricity flows, and fixes and connects electronic components to supply various signals or electricity. Control the flow of ON and OFF. That is, the LED 60 is fixed and connected to the designated position of the PCB 70 and supplies operating power through the corresponding pattern to generate light, and when the dome of the dome array 50 is pressed by an external force, it is in an off state. Connect the corresponding pattern separated on to make the corresponding signal transmitted.

FIG. 3 is an explanatory view of an assembly procedure of a semi-assembled assay component of a keypad component according to an example of the prior art.

Hereinafter, described in detail with reference to the accompanying drawings, the button assay (BUTTON ASSEY) (A) is attached to one surface of the first adhesive film 20 in a state in which the button array 10 is arranged at a specified position and again designated It is configured to attach to the other surface of the first adhesive film 20, which is a double-sided adhesive in a state in which the rubber pad 30 is arranged in position. The light guide plate 40 has the same configuration as the description in FIG. 2.

The dome assay (B) is a flat double-sided adhesive film 20, each dome of the dome array 50 is arranged in a uniform position at a specified position and bonded to each other, and the adhesive double-sided adhesive 3 The adhesive film 24 is aligned to a specified position and is bonded so that each dome of the dome array protrudes through the perforated hole.

The PCB assay C is a configuration in which the LED 60 is fixed and electrically connected to a designated position of the PCB 70 in which a pattern of a designated circuit is formed.

The keypad structure according to the prior art of such a configuration has a number of components that require a lot of manufacturing time, high price, high weight, bulky, high failure rate and difficult management.

Therefore, it is necessary to develop a technology to reduce the number of components of the keypad to reduce the weight and volume, to reduce the occurrence of defects and to reduce the price in order to increase the life and reliability of the product, suitable for electronic devices developed in the miniaturization trend.

The present invention is to solve the problems and necessity of the prior art as described above, in particular, since the number of components of the keypad is reduced, reducing the overall weight and volume, the integrated keypad of the small electronic device suitable for the miniaturization of the electronic device and its manufacturing method The purpose is to provide.

In addition, the purpose of the present invention is to provide an integrated keypad of a small electronic device and a method of manufacturing the same, which extend the lifespan by reducing the number of component parts of the keypad and reduce the occurrence of failure, thereby extending the lifespan by increasing the error factor of driving. to be.

It is also an object of the present invention to provide an integrated keypad of a small electronic device and a method of manufacturing the same, which reduce the number of components of the keypad to facilitate management and to lower the price, thereby activating diffusion.

The present invention devised in order to achieve the above object is made of any one selected from hardened plastics, metals and button arrays arranged by sorting the plate shape, each of which is selected by selecting one or more of numbers, letters, symbols differently, A button assay comprising a rubber pad formed by bonding a button array to one side and having a transparent and double-sided adhesive film, and a rubber pad formed by forming a protrusion on one side of the adhesive film, which is transparent and elastic, and formed on a side of the adhesive film. The coated, transparent, double-sided adhesive first light guide film, the dome array bonded to one side of the first light guide film, the dome array having an elastic and conductive hemispherical shape, and forming a hole at the position of the dome array; Formed by contacting the dome of the dome array and the dome array consisting of a transparent second light guide film coated with a material An integrated keypad of a small electronic device is provided, which includes a PCB assay for operating an LED in a predetermined switch pattern and fixing an LED that emits light by supply of an operating power source.

Preferably, the dome assay forms a hole in which the LED is inserted by selection in the first light guide film, forms a hole in which the LED is inserted in the second light guide film, and applies a light guide material to the adhesive film by selection. , The light guide material is not applied to any one selected from the first light guide film and the second light guide film.

The present invention devised to achieve the above object is made of any one selected from hardened plastics, metals, and any one or more of numbers, letters, and symbols are formed in a semi-transparent state by differently distinguishing and displaying a plate form. Adhesively arranged semi-transparent button array, translucent button array on one side, transparent and double-sided adhesive on first side, adhesive on the other side of the first adhesive film, transparent, elastic and light guide material mixed to protrude on one side A button assembly comprising a light guide rubber pad molded in a state of forming a doped array, and a domed array in which a semi-adhesive second adhesive film is bonded to one side of the second adhesive film, and the hemispherical shape of which is elastic and conductive is aligned; A dome assay formed of a third adhesive film having a hole formed at a position of the dome array and being double-sided and transparent; and The present invention provides an integrated keypad of a small electronic device including a PCB assay for operating a predetermined switch pattern formed in contact with a dome of a dome array and fixing an LED emitting light by supply of operating power.

Preferably, the semi-transparent button array of the button assay is formed to include a light guide material selectively in a translucent state, the second adhesive film to form a hole in which the LED is inserted, the third adhesive film, the LED Is made of a configuration to form a hole is inserted.

In addition, the light guide material is applied to any one or more selected from the second adhesive film and the third adhesive film.

The present invention devised to achieve the above object is made of any one selected from hardened plastics, metals and sorted by distinguishing the plate form formed in a semi-transparent state by selecting any one or more of numbers, letters, symbols differently One translucent button array, a translucent button array with a transparent, light guide material coated on one side, a transparent, light guide material coated on one side, a transparent, elastic, and formed by forming projections on one side A hole is formed at a position of a dome array and a dome array in which a button assembly made of a rubber pad, a transparent double-sided adhesive film and a hemispherical shape having elastic and conductive adhesion to one side of the first adhesive film are aligned. And double-sided adhesive and transparent dome assay consisting of a second adhesive film and in contact with the dome of the dome array By an operating switch in the ON state a predetermined pattern, and includes a PCB Assay for fixing the LED which emits light of a supply of the operating power supply presents the integrated keypad of the small electronic devices takes place.

Preferably, the semi-transparent button array of the button assay is formed in the translucent state optionally comprising a light guide material, the first adhesive film to form a hole in which the LED is inserted by selection, the second adhesive film LED is Forming a hole to be inserted, and consists of applying a light guide material to any one or more selected from the first adhesive film and the second adhesive film.

The button assay, the dome assay and the PCB assay are made by bonding in order.

The present invention devised to achieve the above object is made of any one selected from hardened plastics, metals and sorted by distinguishing the plate form formed in a semi-transparent state by selecting any one or more of numbers, letters, symbols differently A semi-transparent button array, a semi-transparent button array bonded to one side and transparent, a double-sided adhesive first film, adhered to the other side of the first film, forming a transparent, elastic, hemispherical recessed groove on one side Rubber pads formed by forming projections on one side and one side of the rubber pad grooves are formed, and the transparent and double-sided adhesive film is adhered by the second film to the grooves of the rubber pad, and has elasticity and conductivity. Keypad assay consisting of dome arrays arranged in hemispherical shape and predetermined switches formed in contact with the dome of the keypad assay To turn the operation in the on state comprises a PCB Assay for fixing the LED which emits light of a supply of the operating power supply presents the integrated keypad of the small electronic devices takes place.

Preferably, the rubber pad is made of any one selected from a mixture of light guide materials and a coating.

On the other hand, the rubber pad is formed in the center of the groove to form a support for supporting the dome of the dome array do not move itself, it is made of a configuration forming a space between the projection and the support.

The translucent state of the semi-transparent button array is composed of any one selected from a composition including a light guide material, an applied composition, and a configuration including or not applied.

In addition, the first film is made of any one selected from a mixture of light guide materials, and a coating and a non-light guide material.

Here, the second film is made of any one selected from a mixture of light guide materials, a coating, and a non-coating material.

The light guide material includes any one or more selected from phosphors and fluorescent materials.

In order to achieve the above object, the present invention provides a first process for selecting any one of a semi-transparent and an opaque button array in which one or more of numbers, letters and symbols are selected and displayed differently. A second process of preparing a transparent double-sided adhesive flat film and a hole-shaped film in which holes of a predetermined size are formed at predetermined intervals, and adhering the selected button array to the selected flat film, and the light guide, The button assay is completed by attaching the button array to a flat film, which is made of any one of the ones containing the material and the one applied or not, and a transparent elastic material and formed with projections at predetermined intervals. 3rd process to make, and select any one of the flat film And a fourth process of adhering the conductive hemispherical dome with a dome array arranged at predetermined intervals, and a fifth process of selecting any one of the hole films and adhering the dome array to complete the dome assay, and at predetermined intervals. And a seventh process of forming a switch pattern and preparing an LED fix to which the LED is fixed, and a seventh process of sequentially bonding a button assay, a dome assay, and a PCB assay. present.

Preferably, the hole of the hole-shaped film comprises a hole in which the dome is inserted and the LED is inserted, the plate-shaped film to form the hole by selection.

In order to achieve the above object, the present invention provides a first process for selecting any one of a semi-transparent and an opaque button array in which one or more of numbers, letters and symbols are selected and displayed differently. A second process of adhering with the selected button array, and using any one selected from a film including a coating and a transparent double-sided adhesive film; A third process of forming a hemispherical groove on one side at a predetermined interval and attaching the other flat surface of the rubber pad having protrusions to the first film at the center of the groove; The second peel is selected from one of the films and the transparent double-sided adhesive film. And a fourth step of completing a keypad assay by attaching a dome to each groove of the rubber pad and forming a switch pattern at predetermined intervals, and preparing a PCB assay in which the LED is fixed. A fifth step and a sixth step of sequentially bonding the keypad assay and the PCB assay; It proposes an integrated keypad manufacturing method of a small electronic device comprising a.

Preferably, the groove of the rubber pad forms a support portion at the inner edge of the hemispherical groove to form a space portion between the protrusions, and increases the flexibility of the groove by the space portion.

The present invention having the configuration as described above has a convenient effect in terms of reducing the number of components of the keypad to reduce the overall weight and volume to promote the miniaturization of electronic devices.

In addition, the present invention of the configuration as described above has the industrial use effect of increasing the production rate by increasing the number of components of the keypad to reduce the cause of failure to increase the reliability of the product at the same time to increase the preference.

On the other hand, the present invention of the configuration as described above has the industrial use effect of activating the distribution by reducing the number of components of the keypad is easy to manage and lower the price.

The terms or words used in this specification and claims are not to be construed as limiting in their usual or dictionary meanings, and the inventors may properly define the concept of terms in order to best explain their invention in the best way possible. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

The keypad is a means for inputting control commands, operating parameters, data, programs, etc. into the electronics, and the weight, volume, and size are small, trouble-free, It requires production at a price. Therefore, the keypad according to the present invention relates to a technology that reduces the number of parts and reduces the number of parts while maintaining the function, while reducing the failure rate and production cost.

4 is a block diagram illustrating an integrated keypad of a small electronic device according to a first embodiment of the present invention.

Hereinafter, the first embodiment will be described in detail with reference to the accompanying drawings, which includes a button assay 100, a dome assay 200, and a PCB assay 300.

The button assay 100 is composed of a button array 102, an adhesive film 104 and a rubber pad 106, the button array 102 is a polycarbonate (POLYCARBONATE: PC) containing hardened plastics, metals It is composed of a flat plate made of any one selected material, and the surface of such a plate is selected to display any one or more of numbers, letters and symbols differently and arranged in the corresponding order. The adhesive film 104 is transparent and double-sided adhesive. The rubber pad 106 is a transparent and elastic material and is formed by repeatedly forming protrusions on one side at regular intervals. One side of the adhesive film 104 is fixed by bonding the button array 102 and the other side by bonding the flat surface of the rubber pad 106 to complete the button assay 100.

The dome assay 200 includes a first light guide film 202, a second light guide film 204, and a dome array 206, and the first light guide film 202 is formed of a fluorescent material or phosphorescent on a transparent double-sided adhesive film. It comprises or coated with a light guide material consisting of at least one selected from materials, and is flat. The second LGP 204 is made of the same material as the first LGP 202, and a plurality of holes having a predetermined size are formed at regular intervals. In this case, although the hole (HALL) may be formed in the first light guide film 202 by selection, it will be described as not forming the hole in the present invention. The dome array 206 is made of any one selected from an elastic and conductive thin metal material, hemispherical, and regularly arranged at regular intervals by a predetermined standard. That is, the second light guide film 204 forms a hole into which each dome (DOME) constituting the dome array 206 is to be inserted.

The PCB assay 300 is lighted by a pattern 304 for switching on and off by contact with a PCB 302 in which a predetermined circuit pattern for supplying electricity is formed and an operating power fixedly supplied to the PCB 302. The configuration includes an LED 306 for generating a.

At this time, the portion of the rubber pad 106 that constitutes the button assay 100 is formed with the protrusion is adhered to the first light guide film 202 which is double-sided adhesive of the dome assay 200, the second light guide film 204 is It adheres to the PCB 302 of the PCB assay 300. Here, each dome constituting the dome array 206 coincides with the position of the switching pattern 304, and the upper portion of each dome is in contact with the projection of the rubber pad 106, and the upper portion of the projection is arranged with the button array 102. Each button constituting is located. Therefore, when pressure is applied to the button, the protrusion of the rubber pad 106 is lowered, and the dome of the dome array 206 is pressed, and the conductive dome pressed and deformed switches the pattern 304 to the ON state. . When the pressure applied to the button is removed, the protrusion returns by the elasticity of the rubber pad 106 and the crushed dome is restored to its original shape by its elasticity, so the pattern 304 of the PCB assay 300 is in an OFF state. Switch to.

On the other hand, the LED 306, which is supplied with operating power by a circuit configuration not shown in the drawing, locally generates light only at the corresponding position, and the generated light is included in or applied to the first or second light guide films 202 and 204. The light guide material scatters widely at a constant brightness and outputs light between each button of the button array 102, thereby illuminating each button position of the button array 102. That is, the user easily checks the position of each button constituting the button array 102 and inputs corresponding commands, data, and the like.

5 is a block diagram illustrating an integrated keypad of a small electronic device according to a second embodiment of the present invention.

Hereinafter, the second embodiment will be described in detail with reference to the accompanying drawings, and includes a button assay 110, a dome assay 210, and a PCB assay 310.

The button assay 110 is composed of a semi-transparent button array 112, the first adhesive film 114 and the light guide rubber pad 116, the button array 112 is a cured plastic containing polycarbonate (PC), It consists of a plate-shaped plate made of any one material selected from metals, and any one or more of numbers, letters, and symbols are selected and formed in a translucent state on the plate, and are arranged in a predetermined order. In this case, the translucent state may optionally include or apply a light guide material. The first adhesive film 114 is transparent and double-sided adhesive, and may optionally include or apply a light guide material. The light guide rubber pad 116 is formed of a light guide material or coated with elastic material and repeatedly formed at regular intervals with protrusions on one side thereof. In this case, when the light guide material is included or coated on the first adhesive film 114, the light guide rubber pad 116 may be made of a transparent material and may not include or apply the light guide material. The translucent button array 112 is adhered to one side of the first adhesive film 114 and the flat side of the light guide rubber pad 116 is fixed to the other side to complete the button assay 110. .

The dome assay 210 includes a second adhesive film 212, a third adhesive film 214, and a dome array 216. The second adhesive film 212 is a transparent and flat double-sided adhesive film. The third adhesive film 214 is made of the same material as the second adhesive film, and a plurality of holes of a predetermined size are formed at regular intervals. In this case, although the hole (HALL) may be formed in the second adhesive film 212 by selection, it will be described as not forming the hole in the present invention. The dome array 216 is the same as the dome array 206 according to the description of the first embodiment and will not be described again. In addition, it is also the same that the third adhesive film 214 forms a hole for inserting each dome constituting the dome array 216. Here, any one or more selected from the second adhesive film 212 and the third adhesive film 214 may include or apply a light guide material to scatter light.

The PCB assay 310 includes the PCB 312, the pattern 314, and the LED 316, which is the same as the PCB assay 300 according to the description of the first embodiment, and thus description thereof will not be repeated. In addition, the process of adhering the button assay 110, the dome assay 210, the PCB assay 310, and the interconnected configuration may be described in the description of the first embodiment. ) And the process of bonding the PCB assay 300 and the same configuration as the interconnection will not be repeated.

On the other hand, the LED 316, which is supplied with the operating power by a circuit configuration not shown in the drawing, generates light locally, and the light is guided through the light guide rubber pads through the transparent third and second adhesive films 214 and 212. 116 is applied to the light guide rubber pad 116 and the light is scattered widely at a constant brightness by the included or applied light guide material, and the light between each button of the button array 112 through the transparent first adhesive film 114 Since the output of the button array 112 to illuminate the position of each button. That is, the user can easily check the position of each button constituting the button array 112 and input the corresponding command, data, and the like.

6 is a block diagram illustrating an integrated keypad of a small electronic device according to a third embodiment of the present invention.

Hereinafter, the third embodiment will be described in detail with reference to the accompanying drawings, and includes a button assay 120, a dome assay 220, and a PCB assay 320.

The button assay 120 is composed of a translucent button array 122, a light guide film 124, and a rubber pad 126, the translucent button array 122 is the same as the description of the translucent button array 112 of the second embodiment Therefore, the description will not be repeated. The light guide film 124 is a double-sided adhesive and is configured to include or apply the light guide material to a transparent material. The rubber pad 126 is the same as the rubber pad 106 according to the description of the first embodiment and will not be redundantly described.

The dome assay 220 includes a first adhesive film 222, a second adhesive film 224, and a dome array 226, and a second adhesion by the dome assay 210 according to the description of the second embodiment. Since the structure and function of the film 212, the third adhesive film 214, and the dome array 216 are the same, the description thereof will not be repeated.

The PCB assay 320 includes the PCB 322, the pattern 324, and the LED 326, which is the same as the PCB assay 300 according to the first embodiment, and thus description thereof will not be repeated. In addition, the process of adhering the button assay 120, the dome assay 220, the PCB assay 320, and the interconnected configurations may be described in the description of the second embodiment of the button assay 110 and the dome assay 210. ) And the PCB assay 310 are the same as the bonding process and the mutually connected configuration will not be described again.

FIG. 7 is a diagram illustrating an integrated keypad structure of a small electronic device according to a fourth embodiment of the present invention, and FIG. 8 is an enlarged view of a portion of the rubber pad M of FIG. 7.

Hereinafter, the fourth embodiment will be described in detail with reference to the accompanying drawings, and includes a keypad assay 400 and a PCB assay 320.

The keypad assay 400 includes a translucent button array 401, a first film 402, a rubber pad 403, a second film 404, and a dome array 405. Since the description is the same as the description of the translucent button array 122 of the third embodiment, the description thereof will not be repeated. In addition, since the first film 402 is the same as the description of the first adhesive film 114 of the second embodiment will not be repeated description.

The light guide rubber pad 403 is a transparent and elastic material, and is made of any one of including or not applying the light guide material, and forming a hemispherical dome of a constant array on one side in an intaglio manner. Since the projection 406 is formed at the center of the hemispherical dome of the support and the support portion 407 is formed at the rim, a space 408 is formed between the projection 406 and the support portion 407.

The structure of this dome is enlarged in detail in the accompanying FIG. 8. Referring to FIG. 8, the translucent button array 401 is adhered to one side of the first film 402, and the flat surface of the rubber pad 403 is adhered to the other side of the first film 402. The protrusion 406 is formed in the center of the dome formed in the rubber pad 403, and the support part 407 is formed in the edge of the dome, and the space part 408 is formed. The dome of the rubber pad 403 is adhered to the inside of the dome and the double-sided adhesive second film 404, and the dome constituting the dome array 405 is formed inside the dome by the second film 404. Adhesive is fixed.

When an external force is applied to the translucent button array 401, it is transmitted to the protrusion 406 of the rubber pad 403, and the protrusion 406 contacts the bottom surface while pressing the dome array 405 again. At this time, when the external force applied to the semi-transparent button array 401 is removed, the rubber pad 403 is restored, and the dome array is also recovered and separated from the bottom surface in contact.

Here, the state in which the rubber pad 403 is pressed and restored by the space 408 proceeds smoothly.

9 is a flowchart illustrating a method for manufacturing an integrated keypad of a small electronic device according to an embodiment of the present invention.

Hereinafter, a manufacturing method according to an embodiment will be described in detail with reference to the accompanying drawings, and any one of a translucent and opaque button array in which one or more of the numbers, letters, and symbols are selected and displayed differently is displayed. Select (S110).

Then, a transparent double-sided adhesive flat film and a hole-shaped film having holes of a predetermined size formed at predetermined intervals are prepared, and the selected button array is adhered to one side of the selected flat film. (S120).

At this time, the hole of the hole-type film includes a hole in which the dome is inserted and the hole in which the LED is inserted, the flat film is formed by selecting the hole.

On the other hand, it is made of any one of the one containing the light guide material and the one coated or not and transparent transparent material, and selected from among flat rubber pads formed with protrusions at predetermined intervals, thereby adhering the button array to a flat film adhered to the button array. Complete the essay (S130).

Select any one of the flat film and bond the dome array with elastic and conductive hemispherical domes arranged at predetermined intervals (S140), and select any one of the hole-shaped films and adhere the dome array to complete the dome assay In step S150, a switch pattern is formed at predetermined intervals and a PCB assay is prepared in which an LED is fixed (S160).

The button assay, the dome assay and the PCB assay prepared in this way are sequentially bonded through a double-sided adhesive film, thereby completing an integrated keypad of a small electronic device (S170).

10 is a flowchart of a method for manufacturing an integrated keypad of a small electronic device according to another embodiment of the present invention.

Hereinafter, a manufacturing method according to another exemplary embodiment will be described in detail with reference to the accompanying drawings, wherein any one or more of semi-transparent and opaque button arrays are selected and displayed differently from each other including numbers, letters, and symbols. Select (S210).

Then, any one selected from the one containing the light guide material and the one coated and not the transparent double-sided adhesive film is used as the first film and adhered to the selected button array (S220).

Meanwhile, the flat other side surface of the rubber pad including the light guide material and one coated or not, and a transparent elastic material, and having a hemispherical groove formed at a predetermined interval on one side, and having a protrusion formed at the center of the groove, the first Adhesive to the film (S230). At this time, the groove of the rubber pad is formed in the inner edge of the hemispherical groove to form a space between the projections, the structure is to increase the flexibility or elasticity of the groove by the space.

In addition, any one selected from a film containing a light guiding material and one applied or not, which is a transparent double-sided adhesive film, is used as a second film, and is bonded to a surface where a rubber pad groove is formed, and a dome is attached to each groove to complete a keypad assay. (S240), a switch pattern is formed at predetermined intervals, and a PCB assay is prepared in which the LED is fixed (S250).

Since the keypad assay and the PCB assay are sequentially bonded through the double-sided adhesive film, the integrated keypad of the small electronic device is completed (S260).

The technique of the present invention as described above provides an integrated keypad suitable for small electronic devices.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made within the technical scope of the present invention, and such modifications and modifications belong to the appended claims.

1 is a plan view of a keypad according to an example of a general mobile phone terminal,

2 is an explanatory view of a component assembly procedure of the keypad according to one example of the prior art;

3 is an explanatory view of an assembly procedure of a semi-assembled assembly of keypad components according to an example of the prior art;

4 is a diagram illustrating an integrated keypad structure of a small electronic device according to a first embodiment of the present invention;

5 is a block diagram illustrating an integrated keypad of a small electronic device according to a second embodiment of the present invention;

6 is a block diagram showing an integrated keypad structure of a small electronic device according to a third embodiment of the present invention;

7 is a block diagram illustrating an integrated keypad of a small electronic device according to a fourth embodiment of the present invention;

FIG. 8 is an enlarged view of a rubber pad M part in FIG. 7; FIG.

9 is a flowchart of a method for manufacturing an integrated keypad of a small electronic device, according to an embodiment of the present invention;

And

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

100, 110, 120: button assay 102: button array

104: adhesive film 106, 126, 403: rubber pad

112, 122, 401: Translucent Button Array

114, 222: First adhesive film 116: Light guide rubber pad

124: light guide film 200, 210, 220: dome assay

202: first light guide film 204: second light guide film

206, 216, 226, 405: Dome array 212, 224: Second adhesive film

214: third adhesive film 300, 310, 320: PCB assay

302, 312, 322, 332: PCB 304, 314, 324, 334: Pattern

306, 316, 326, 336: LED 402: First film

404: second film 406: projection

407: support portion 408: space portion

Claims

A button array made of one selected from among hardened plastics and metals, and arranged by dividing one or more selected from among numbers, letters and symbols, and sorting them.

An adhesive film that adheres the button array to one side and is transparent and double-sided adhesive,

A button assay made of a rubber pad bonded to the other side of the adhesive film and transparent and elastic and formed with protrusions formed on one side thereof;

A first light guiding film to which the light guiding material is applied and transparent and double-sided,

A dome array bonded to one side of the first light guide film and arranged in a hemispherical shape having elasticity and conductivity;

A dome assay formed of a transparent second light guiding film by forming a hole at a position of the dome array, applying a double-sided adhesive, a light guiding material; And

A PCB assay for operating a predetermined switch pattern formed in contact with the dome of the dome array and fixing an LED emitting light by supply of operating power; Integrated keypad of a small electronic device comprising a.

The method of claim 1, wherein the dome assay,

In the first light guide film to form a hole in which the LED is inserted by selection,

The second light guide film forms a hole into which the LED is inserted,

Apply a light guide material to the adhesive film by selection,

The integrated keypad of the small electronic device, characterized in that the configuration is not applied to any one of the first light guide film and the second light guide film.

A semi-transparent button array made of one selected from hardened plastics and metals and formed at a translucent state by selecting one or more of numbers, letters, and symbols differently from each other;

A first adhesive film that adheres the translucent button array to one side and is transparent and double-sided adhesive;

A button assay comprising a light guide rubber pad bonded to the other side of the first adhesive film and formed with a projection formed on one side by mixing a transparent, elastic and light guide material;

A transparent double-sided adhesive second adhesive film,

A dome array bonded to one side of the second adhesive film and arranged in a hemispherical shape having elasticity and conductivity;

A dome assay having holes formed at positions of the dome array and comprising a third adhesive film having a double-sided adhesiveness and a transparent adhesive film; And

The method of claim 3, wherein

The translucent button array of the button assay is formed by selectively including a light guide material in the translucent state,

The second adhesive film forms a hole in which the LED is inserted by selection,

The third adhesive film is an integral keypad of a small electronic device, characterized in that the configuration to form a hole in which the LED is inserted.

The method of claim 4, wherein

An integrated keypad of a small electronic device, characterized in that the light guide material is applied to any one or more selected from the second adhesive film and the third adhesive film.

A semi-transparent button array made of one selected from hardened plastics and metals, and arranged in a translucent state by selecting one or more of numbers, letters, and symbols differently;

A double-sided adhesive light guide film which adheres the translucent button array to one side and is transparent and coated with a light guide material;

A button assay comprising a rubber pad bonded to the other side of the light guide film, transparent, elastic, and formed by forming protrusions on one side thereof;

A transparent, double-sided adhesive first adhesive film,

A dome array bonded to one side of the first adhesive film and arranged in a hemispherical shape having elasticity and conductivity;

A dome assay formed of a second adhesive film having a hole formed at a position of the dome array and being double-sided adhesive; And

The method of claim 6,

The first adhesive film forms a hole into which the LED is inserted by selection,

In the second adhesive film is formed a hole into which the LED is inserted,

An integrated keypad of a small electronic device, characterized in that the light guide material is applied to any one or more selected from the first adhesive film and the second adhesive film.

The method according to any one of claims 1 to 3 and 6,

And the button assay, the dome assay and the PCB assay are sequentially bonded to each other.

Bonding the translucent button array to one side and having a first transparent and double-sided adhesive film;

A rubber pad bonded to the other side of the first film and formed with a transparent, elastic, semi-spherical groove on one side and a protrusion formed in the groove;

A second film bonded to one side to the surface on which the groove of the rubber pad is formed and transparent and double-sided adhesive,

A keypad assay formed of a dome array in which a hemispherical shape of elastic and conductive adhesive is adhered to the groove of the rubber pad by the second film; And

A PCB assay for operating a predetermined switch pattern formed in contact with the dome of the keypad assay to fix the LED emitting light by supplying operating power; Integrated keypad of a small electronic device comprising a.

The method of claim 9,

The rubber pad is an integrated keypad of a small electronic device, characterized in that the composition consisting of any one selected from the mixture of the light guide material and coated and not.

The method of claim 10,

The rubber pad has a protrusion formed at the center of the groove, a support portion for supporting the dome of the dome array so as not to move itself, and a space formed between the protrusion and the support portion. pad.

The method of claim 9,

The semi-transparent state of the semi-transparent button array is a one-piece keypad of the small electronic device, characterized in that consisting of any one of the configuration including the light guide material and the applied configuration and the configuration included or not.

The method of claim 9,

The first film is a one-piece keypad of the small electronic device, characterized in that the composition consisting of any one selected from the mixture of the light guide material and the coating and not.

The method of claim 9,

The second film is a one-piece keypad of the small electronic device, characterized in that the composition consisting of any one selected from the mixture of the light guide material and coated and not.

The method according to any one of claims 1, 3, 6, 10, 12, 13, 14,

The light guide material,

An integrated keypad of a small electronic device, characterized in that it comprises at least one selected from phosphors and fluorescent materials.

A first process of selecting one of a translucent and an opaque button array in which any one or more of numbers, letters, and symbols are differently selected and displayed;

A second film for preparing a transparent double-sided flat plate-like film and a hole-shaped film having holes having a predetermined size at predetermined intervals, each of which contains a light guide material and is coated; process;

Since the button array is adhered to the flat panel film to which the button array is adhered by selecting any one of the flat rubber pad including protrusions and protrusions at predetermined intervals. The third process of completing the essay;

A fourth process of selecting any one of the flat film and adhering a hemispherical dome having elasticity and conductivity to a dome array arranged at predetermined intervals;

A fifth process of selecting any one of the apertured films and bonding a dome array to complete a dome assay;

Forming a switch pattern at predetermined intervals and preparing a PCB assay to which the LED is fixed; And

A seventh process of sequentially bonding the button assay, the dome assay and the PCB assay; Integrated keypad manufacturing method of a small electronic device comprising a.

The method of claim 16,

The hole of the hole-shaped film comprises a hole in which the dome is inserted and the LED is inserted,

The flat panel film manufacturing method of the integral keypad of the small electronic device, characterized in that for forming the hole by selection.

A second process of adhering the selected button array to the first film using any one selected from a film containing a light guiding material and one applied and not the transparent double-sided adhesive film;

The flat other side surface of the rubber pad including the light guide material and one of the coated and non-transparent elastic materials and having a hemispherical groove formed at a predetermined interval on one side and having a protrusion formed at the center of the groove is formed. 1 third process of bonding with the film;

A second film is used as the second film, which is selected from a film including a light guiding material, and a transparent and double-sided adhesive film. Fourth process;

Forming a switch pattern at predetermined intervals and preparing a PCB assay in which the LED is fixed; And

A sixth process of sequentially bonding the keypad assay and the PCB assay; Integrated keypad manufacturing method of a small electronic device comprising a.

The method of claim 18,

The groove of the rubber pad is formed on the inner edge of the hemispherical groove to form a space between the projections, and the space by the space portion, characterized in that to increase the flexibility of the groove of the compact keypad.