KR20060127284A - A manufacturing method for keypad of cellular phone - Google Patents

Abstract

A method for manufacturing a keypad of a cellular phone is provided to implement slimness and light weight by slimming a key button and to realize a high grade design by variously forming a key button and a front case body. A method for manufacturing a keypad of a cellular phone includes the steps of: a first step(S1) for manufacturing a key sheet(10) by forming a set of key buttons(13) on one sheet(11) according to an arrangement of key pads; a second step(S2) for attaching the key sheet(10) to an attaching sheet(20) having a viscosity; a third step(S3) for detaching a remaining ground surface(11a) from the attaching sheet(20) after the key button(13) and the remaining ground surface(11a) of the key sheet are separated; and a fourth step(S4) for detaching a following attaching sheet after a rubber sheet(50) with a contact protrusion(51) is attached to the key buttons(13).

Description

Keypad manufacturing method of mobile phone and its keypad {A MANUFACTURING METHOD FOR KEYPAD OF CELLULAR PHONE}

1 is a view showing a process flow according to the present invention

Figure 2a is a perspective view of a key sheet in one embodiment according to the present invention

Figure 2b is a perspective view of a key sheet in another embodiment according to the present invention

Figure 3 is a perspective view of the completion of the third step according to the present invention

Figure 4 is a fourth step explanatory diagram of another embodiment according to the present invention

Figure 5a is a fourth step explanatory diagram of yet another embodiment according to the present invention

FIG. 5B is a perspective view of FIG. 5A

6 is an explanatory diagram of a prior art 1

7 is a block diagram of the prior art 2

* Explanation of symbols for the main parts of the drawings

1: Keypad 10: Keysheet 13: Key button

20: adhesive sheet 30: second adhesive sheet 50: rubber sheet

51: contact projection 60: front case plate 70: front case

71: through

The present invention relates to a keypad of a mobile phone, and specifically, a set of key buttons are accurately aligned and fixed in an arrangement on one adhesive sheet, thereby using the same to completely attach the rubber sheet to the front case, and thus the defective arrangement of the front case is perfectly. While the mounting is blocked, the precise arrangement and attachment is made in a single step, and the productivity is dramatically improved. In addition, the slimming and lightening of the mobile phone are realized due to the slimming of the key button. And a keypad thereof.

Generally, a keypad is provided as a signal input means, and contact keys are formed on each key of the keypad, and are assembled on the substrate by a printing press.

As shown in FIG. 6 of the keypad 1, first, each key button 113 is injection molded through a mold, and then cut and separated by a separate cutting device, and then the same key groove as the keypad arrangement of the mobile phone ( After the 501 is inserted into the formed jig 500, an adhesive is applied to the bottom surface of the key button 113, and the rubber sheet 150 is adhered.

However, in the process of arranging the keys using the jig 500, the display portion of the key on which letters are displayed is inserted into the key groove 501 of the jig and is inserted invisible, and the shape of the plurality of keys 113 is changed. As a result of the similarity, there is a problem in that misoperation is frequently generated while increasing productivity at the expense of productivity.

In addition, the conventional keypad has to have a predetermined thickness in order to maintain the strength by being molded of synthetic resin, there was a problem inferior to the trend of the mobile phone market for slimming and lightweight.

On the other hand, a keypad in which a plurality of keys are integrally formed on a thin sheet is disclosed in Utility Model Registration No. 0383014 (hereinafter referred to as "Prior Art 2").

The prior art 2 (200) is, as shown in Figure 7, the key button 213 is displayed on a thin sheet sheet, etc. is formed by a print, etc., NC processing leaving one side of the four sides of the key button integral with the main body It is formed to maintain the state to prevent the key misplacement to significantly improve the productivity and has the advantage of implementing a slimmer and lighter mobile phone. Reference numeral 210 is an NC machining part.

However, the second conventional technology has a limitation in that it does not have a variety in design in a mobile phone sensitive to fashion and fashion.

The present invention has been made to solve the above problems,

It is an object of the present invention that a set of key buttons are accurately aligned and fixed in an arrangement on one adhesive sheet, thereby making it possible to attach to a rubber sheet, and furthermore, a mounting arrangement in which defective arrangements are completely blocked on the front case. The present invention provides a keypad manufacturing method of a mobile phone and a keypad thereof to improve productivity significantly by performing precise arrangement and attachment.

Another object of the present invention is to realize a slim and light weight of the mobile phone due to the slimming of the key button, as well as to form a variety of key buttons and the front case body, the design development is high, the keypad of the mobile phone to achieve high image quality A manufacturing method and a keypad thereof are provided.

Keypad manufacturing method of a mobile phone according to the present invention for achieving the above object,

In the manufacturing method of the keypad disposed on the upper surface of the circuit board of the portable terminal to operate the movable contact to operate the key button,

A first step of forming a key sheet by forming a set of key buttons according to the arrangement of keypads on a sheet;

Attaching the key sheet to a viscous adhesive sheet having one surface thereof;

NC processing the circumferential lines of the key sheet key buttons on the adhesive sheet to separate the remaining button surfaces of the key buttons and the key sheet, and then removing the remaining surface from the adhesive sheet;

And a fourth step of attaching the rubber sheet having contact protrusions formed on the key buttons bonded to the adhesive sheet and then removing the adhesive sheet.

A keypad of a mobile phone according to the present invention for achieving the above object is a keypad disposed on an upper surface of a circuit board of a portable terminal to operate a movable contact to operate a key button, wherein one or more sets of the keypads are arranged in a sheet according to the arrangement of the keypad. After forming the key buttons to produce a key sheet, and after attaching the key sheet 10 to one side of the adhesive sheet coated with an adhesive, the circumferential line of the key sheet key buttons on the adhesive sheet by NC processing the key button and the key After separating the remaining bottom surface of the sheet, the remaining bottom surface is removed from the adhesive sheet, the second adhesive sheet is attached to the key buttons, and then the adhesive sheet is removed from the key buttons to switch the display surface of the key buttons. After that, it is characterized in that the rubber sheet formed with a contact projection formed on the key buttons.

Hereinafter, an embodiment of a method for manufacturing a mobile phone and a keypad thereof according to the present invention will be described in more detail with reference to the accompanying drawings.

In the keypad manufacturing method according to the present invention, as shown in Figure 1, in the manufacturing method of the keypad which is arranged on the upper surface of the circuit board of the portable terminal to operate the movable contact to operate the key button, the keypad on one sheet 11 According to the arrangement of the first step to form a set of key buttons 13 to produce a key sheet 10 (S1), the first to attach the key sheet 10 to the adhesive sheet 20 having one surface viscous Step 2 (S2), the NC line is processed on the adhesive sheet 20, the peripheral line of the key button 13, the key button 13 and the remaining base surface 11a of the key sheet is separated and then In the third step S3 of removing the remaining base surface 11a from the adhesive sheet 20, the rubber sheet 50 having the contact protrusion 51 is attached to the key buttons 13, and then the adhesive sheet is removed. It will be manufactured including the fourth step (S4).

Here, the sheet 11 of the first step may be made of a resin or a metal or urethane, and is preferably formed of a transparent resin sheet material.

In the first step S1, the key buttons 13 are formed on the sheet 11 by printing or spraying or laser cutting or any two or more of the above three methods. Further, the key button 13 may be formed on one side or both sides of the sheet.

In the key sheet 10, only one set of key buttons may be formed, but a plurality of sets of key buttons 13 may be arranged (see FIGS. 2A and 2).

The adhesive sheet 20 is a viscous surface is coated with a non-stick adhesive that can remove the attachment at any time, rather than being attached to the adhesive.

During NC processing in the third step (S3), the bite is controlled to cut only the key sheet 10 and not to contact the adhesive sheet 20.

In addition, the second adhesive sheet 30 is attached to the key buttons 13 between the third step S3 and the fourth step S4, and then the adhesive sheet 20 is removed from the key buttons 13. It is preferable to add a third step (S3-1) for removing the to switch the display surface of the key buttons.

Step 3-1 is a step of overturning the key buttons 13 so that the characters are immediately visible when attached to the rubber sheet 50. This process is a key button 13 directly on the key sheet 10. The necessity is determined by whether they appear to appear or vice versa.

In addition, as shown in FIG. 4 in the fourth step S4, the front case plate body 60 to which the key buttons 13 are attached is preferably attached to the upper surface of the rubber sheet 50.

The front case plate 60 is preferably made of a thin metal sheet, in this case, the mobile phone is further slimmer and lighter.

In addition, as illustrated in FIGS. 5A and 5B in the fourth step S4, the front case of the mobile phone having the through hole 71 formed therein so that the key buttons 13 can be inserted into the upper surface of the rubber seat 50. 70) may be combined. At this time, it will be well known to those skilled in the art that the adhesive is applied to the bottom of the key buttons.

Thus, since the key button 13 is mounted in the state in which the rubber seat 50 serving as the base of the keypad is attached to the front case 70, the process is significantly easier than in the prior art.

The keypad 1 of the cellular phone according to the present invention manufactured by the above method is arranged on the upper surface of the circuit board of the portable terminal and operates a movable contact to operate a key button. According to the arrangement, the key sheet 10 is formed by forming one or more sets of key buttons 13, and after attaching the key sheet 10 to one surface of the adhesive sheet 20 to which the adhesive is applied, the adhesive sheet ( 20, NC process the circumferential line of the key button 11 on the key sheet 11 to separate the remaining button surface 11a of the key button 13 and the key sheet, and then attach the remaining base surface 11a to the adhesive sheet ( 20), the second adhesive sheet 30 is attached to the key buttons 13, and then the adhesive sheet 20 is removed from the key buttons 13 to switch the display surface of the key buttons. The rubber sheet 50 is formed by attaching the contact protrusion 51 to the key buttons 13.

In addition, the front case plate body 60 may be attached between the rubber seat 50 and the key button 13.

It looks at the operating state according to the present invention having the above configuration.

According to the present invention, in manufacturing a mobile phone, a key is precisely processed by NC processing in a state in which the key sheet 10 formed on the sheet 11 is attached to the adhesive sheet 20 by printing or the like on the sheet 11. After cutting the circumference of the button 13, the key is to align and fix the key buttons 13 in the arrangement on the adhesive sheet 20 by removing the remaining bottom surface 11a.

In this way, a set of key buttons 13 are accurately aligned and fixed in an arrangement on one adhesive sheet 20 so that the attachment to the rubber sheet 50 and the bad arrangement of the front case are completely blocked by using the same. While the mounting is done, such an accurate arrangement and attachment is achieved in a single step, which dramatically improves productivity.

In addition, the slimming and lightening of the mobile phone can be easily realized due to the slimming of the key button 13, while the key button and the front case can be variously formed from a thin plate type to a volume type. To lose.

As those skilled in the art to which the present invention pertains, various permutations, modifications, and changes can be made without departing from the spirit and scope of the present invention. no.

As described in detail above, the keypad manufacturing method of the mobile phone according to the present invention and the keypad is attached to the rubber seat by using a set of key buttons are accurately aligned and aligned in an arrangement on one adhesive sheet, furthermore the front case On the other hand, the mounting of the defective array is completely blocked, while such precise arrangement and attachment are performed at once, thereby providing an excellent effect of dramatically improving productivity.

In addition, due to the slimming of the key button, slimming and lightening of the mobile phone can be realized, and the key button and the front case body can be formed in various ways, so that the design can be advanced.

Claims (9)

In the manufacturing method of the keypad disposed on the upper surface of the circuit board of the portable terminal to operate the movable contact to operate the key button, A first step (S1) of manufacturing a key sheet 10 by forming a set of key buttons 13 according to the arrangement of the keypads on the sheet 11; A second step (S2) of attaching the key sheet 10 to the adhesive sheet 20 having one surface thereof being viscous; NC process the circumference line of the key button 13 on the adhesive sheet 20 to separate the key button 13 and the remaining bottom surface 11a of the key sheet, and then the remaining bottom surface 11a. Removing the adhesive sheet from the adhesive sheet 20 (S3); A fourth step (S4) of attaching a rubber sheet (50) having a contact protrusion (51) formed on the key buttons (13) and then removing the adhesive sheet (S4): The method of manufacturing a keypad of a mobile phone, characterized in that it is manufactured. The method of claim 1, A second adhesive sheet 30 is attached to the key buttons 13 between the third step S3 and the fourth step S4, and then the adhesive sheet 20 is removed from the key buttons 13. And a third step (S3-1) of switching the display surfaces of the key buttons. The method of claim 1, The key button (13) in the first step (S1) of the keypad manufacturing method of the mobile phone, characterized in that formed on the sheet (11) by printing or spraying or laser cutting or any two or more of the three methods. The method of claim 1, Method of manufacturing a keypad of a mobile phone, characterized in that the front case plate body (60) to which the key buttons (13) are attached to the upper surface of the rubber seat (50) in the fourth step (S4). The method of claim 1 Keypad of the mobile phone, characterized in that the front case 70 of the mobile phone formed with the through-hole 71 is inserted into the upper surface of the rubber seat 50 in the fourth step (S4) is inserted Manufacturing method. The method of claim 1, The first step of the seat 11 is a keypad manufacturing method of a mobile phone, characterized in that made of resin or metal or urethane The method of claim 1, Keypad manufacturing method of the mobile phone, characterized in that a plurality of sets of key buttons are arranged in the key sheet (10) of the first step. In the keypad disposed on the upper surface of the circuit board of the portable terminal to operate the movable contact to operate the key button, According to the arrangement of the keypad on the sheet 11, one or more sets of key buttons 13 are formed to manufacture the key sheet 10, and the key sheet 10 on one side of the adhesive sheet 20 coated with adhesive After attaching to, the circumference line of the key button 13 of the key sheet 11 on the adhesive sheet 20 by NC processing to separate the remaining button surface 11a of the key button 13 and the key sheet and then the remaining The base surface 11a is removed from the adhesive sheet 20, the second adhesive sheet 30 is attached to the key buttons 13, and then the adhesive sheet 20 is removed from the key buttons 13. After switching the display surface of the key buttons, the keypad of the mobile phone, characterized in that by attaching a rubber seat (50) having a contact projection (51) formed on the key buttons (13). The method of claim 8, Keypad of the mobile phone, characterized in that the front case plate 60 is attached between the rubber seat (50) and the key button (13).

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