KR100637335B1 - Method for making case plate - Google Patents

Abstract

A method for manufacturing a case plate is disclosed. Mounting a front film formed by patterning a coating layer or a first printing layer on an inner side of a mold; Forming a resin layer by injecting and curing a resin into the coating layer or the first printing layer of the front film; Arranging the transfer film formed by patterning the second printing layer on the resin layer so as not to overlap with the coating layer or the first printing layer; And transferring the second printed layer onto the resin layer by applying heat and pressure to the transfer film.

Mobile devices, windows, keypad, film, printing, release film

Description

Case plate manufacturing method {Method for making case plate}             

1 is a front view showing an example of a case plate manufactured according to the present invention and corresponding to an LCD unit of a mobile device.

FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1.

3 is a flowchart illustrating a method of manufacturing a case plate of a mobile device according to an embodiment of the present invention.

4 is a process diagram according to FIG. 3.

5 is a flowchart illustrating a method of manufacturing a case plate of a mobile device according to another embodiment of the present invention.

The present invention relates to a method of manufacturing a case plate of a mobile device, and more particularly, even if the shape of the back surface of the case plate of the mobile device is a curved surface or irregular irregular surface, such as a logo or figure or letters, numbers, or symbols The present invention relates to a method for manufacturing a case plate of a mobile device capable of clearly printing magnetic strings.

In general, a mobile device such as a cellular phone or a PDA is divided into a portion in which an LCD unit is mounted and a portion in which a keypad unit is mounted.

The case plate installed on the LCD unit has a transparent window formed at a portion corresponding to the LCD to protect the LCD unit from foreign matter or moisture, and includes a logo, letters, The model name of the terminal and the like are printed.

In addition, the case plate installed in the keypad unit is arranged with a plurality of input keys, each of the input keys are printed with numbers or letters for identification.

As such, the case plates respectively corresponding to the LCD unit and the keypad unit are coupled to the housing of the mobile device.

However, in the conventional mobile device, letters, logos, numbers, and the like printed on the case plate corresponding to the LCD unit and the keypad unit are repeatedly contacted with the user's hand, and thus the physical pressure and the chemicals discharged from the user's hand are repeated. There is a disadvantage that the reaction is gradually erased or peeled off.

Here, in order to improve the problems of the conventional keypad, Korean Utility Model Registration No. 20-343860 (the keypad for a mobile device) is provided with a projection for contacting the printed circuit board embedded in the mobile phone at the bottom. A base formed of silicone rubber is formed, and a film having a printed portion printed on the back of numbers, letters, symbols, etc. is inserted or bonded at the top of the base, and a key top formed of hard plastic is integrally formed on the surface of the film by using an adhesive. Formed portable keypad is disclosed.

However, in this configuration, if the shape of the back of the key top has an irregular irregular surface instead of a plane, the film is difficult to adhere to the key top, and even if bonded, the numbers, letters, and signs printed on the film may be deformed. have.

In addition, since there are no printed layers other than the printed portion printed on the back of numbers, letters, symbols, etc., there is a disadvantage in that various colors cannot be represented on the keypad.

The present invention is to solve the problems of the prior art as described above, the case plate of the mobile device that can clearly print a character string, such as logos or figures or letters, numbers or symbols on the back surface of the curved surface or irregular irregularities Its purpose is to provide a method.

Other objects, features and advantages of the present invention will be more clearly understood from the embodiments described below.

According to one aspect of the invention, the step of mounting the front film formed by coating the coating layer or the first printing layer on the inner side of the mold; Mounting the back film formed by patterning the second printing layer on the other side of the inside of the mold so as not to overlap the coating layer or the first printing layer; Insert-injecting a resin between the front film and the back film; And after the injected resin is cured, a case plate manufacturing method comprising the step of demolding is disclosed.

Preferably, after demolding, the back film may be peeled off.

According to another aspect of the invention, the step of mounting the front film formed by coating the pattern or the first printed layer on the inner side of the mold; Forming a resin layer by injecting and curing a resin into the coating layer or the first printing layer of the front film; Arranging the transfer film formed by patterning the second printing layer on the resin layer so as not to overlap with the coating layer or the first printing layer; And transferring the second printed layer onto the resin layer by applying heat and pressure to the transfer film.

Preferably, the method may further include peeling off the film base of the transfer film.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and the present invention is not limited thereto.

1 is a front view showing an example of a case plate manufactured according to the present invention and corresponding to an LCD unit of a mobile device. The form shown in this example is assumed for convenience of description, and various forms are possible in practice.

The case plate 10 may have a rectangular shape, and a transparent window 14 may be formed at a portion corresponding to the LCD. For example, an opening 12 may be formed to expose an input device such as a jog shuttle.

A coating layer 22 is formed on the periphery of the transparent window 14 and the plate, respectively, and a logo 16 is printed on the upper portion of the transparent window 14, and a company name 18 is printed on the lower portion thereof. Assume that the base pattern layer 26 is formed.

FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1.

The front film 20 positioned at the top is a transparent film and has a thickness of approximately 50 to 175 μm.

The coating layer 22 is formed on the front film 20 in a predetermined pattern. For example, a material such as chromium, nickel, titanium, gold, silver, or platinum may be used to coat the metal.

Here, the predetermined pattern includes a portion except for the portion where the logo 16, the manufacturer's name 18, and the base pattern layer 26 are to be formed.

In addition, the base pattern layer 26 is formed on the same plane as the coating layer 22. As the base pattern layer 26, for example, a tree pattern or a color pattern may be used.

The base pattern layer 26 may be directly printed on the front film 20 or may be formed through an adhesive.

The resin layer 30 is formed on the front surface including the coating layer 22, the base pattern layer 26, and the front film 20, and maintains the overall shape of the case plate 10. Preferably, the thickness of the resin layer 30 may be about 0.8 to 1.2 mm.

In addition, the back of the resin layer 30 is formed by embedding the print layer of the logo 16 and the manufacturer name 18.

Preferably, a protective coating layer (not shown) is formed on the entire rear surface of the resin layer 30 to prevent the printing layer of the logo 16 and the manufacturer name 18 from being erased or peeled off.

In this example, the coating layer 22 and the base pattern layer 26 are formed on the front film 20 on the same plane, and the logo 16 and the manufacturer name 18 are embedded in the back surface of the resin layer 30. Although the examples are given, they may be formed by swapping positions with each other.

Hereinafter, a manufacturing method according to an embodiment of the present invention will be described in detail.

3 is a flow chart illustrating a method of manufacturing a case plate of a mobile device according to an embodiment of the present invention, Figure 4 is a flow chart according to FIG.

Referring to FIGS. 3 and 4, for example, the front film 20 processed in a predetermined form such as an opening 12 is prepared, and a coating layer 22 is formed on the front surface (step S30).

As described above, for example, a material such as chromium, nickel, titanium, gold, silver, or platinum may be used as the coating layer 22, and the coating layer 22 may be a vacuum using plasma. It can form using vapor deposition etc.

Optionally, the front film 20 having the coating layer formed thereon may be used.

Subsequently, the coating layer 22 formed on the front surface is patterned in a predetermined form (step S31).

That is, referring to FIG. 1, the coating layer 22 is formed around the transparent window 14 and the periphery of the plate, respectively, and is patterned to have such a shape.

Patterning may be performed using a commonly used etching or a laser processing machine (not shown).

In the portion where the coating layer 22 is removed by patterning, a string such as the base pattern layer 26, the logo 16, or the manufacturer name 18 is disposed.

Preferably, since the character strings such as the logo 16 and the manufacturer's name 18 formed on the back surface of the resin layer 30 are spaced apart from the front film 20 by a predetermined distance, the character strings will have a three-dimensional effect when viewed from the front surface. .

In addition, when viewed from a position inclined at a predetermined angle from the front of the front film 20 due to the spaced apart, other parts other than the character string such as the logo 16 or the company name 18 can be seen to prevent this The portion of the coating layer 22 corresponding to the character string such as the logo 16 or the manufacturer's name 18 is preferably formed smaller than the size of the character string such as the logo 16 or the manufacturer's name 18.

Subsequently, the first printed layer including the base pattern layer 26 is formed except the portion corresponding to the character string such as the logo 16 or the manufacturer name 18 among the portions where the coating layer 22 is removed (step S32).

As described above, as the base pattern layer 26, a specific pattern such as a tree pattern or a specific color may be used.

As such, the front film 20 having the coating layer 22 and the base pattern layer 26 formed thereon is mounted on one side of the mold 60 (step S33).

On the other hand, apart from the manufacturing process of the front film, the back film 40 forms a second printed layer such as a character string such as a logo 16 or a company name 18 at a predetermined position (step S34).

As described above, it is preferable that the protective coating layer (not shown) is formed on the rear film 40 and the second printing layer is formed on the protective coating layer.

Preferably, when the back film 40 is peeled off from the resin layer 30 as described below, a release film may be used so that the second printed layers 16 and 18 do not fall together.

The back film 40 having the second printed layers 16 and 18 formed thereon is mounted on the opposite side of the front film 20 inside the mold 60 (step S35).

When the front film 20 and the back film 40 are mounted to the mold 60 so as to face each other, resin is injected between the front film 20 and the back film 40 through the injection hole 62 formed at the side surface ( Step S36).

The injection hole 62 may be formed above or below the mold 60 in addition to the side surface.

The resin is an insert injection resin, which is used to maintain the overall shape of the case plate, and polycarbonate, ABS resin, acrylic resin, or silicone may be used.

After the resin is inserted into the insert between the front film 20 and the back film 40 and the predetermined time passes, the injected resin is cured to form the resin layer 30.

Thus, when the resin layer 30 is formed and the overall shape is completed, it demolds from the metal mold | die 60, and peels the back film 40 from the resin layer 30 (step S37).

At this time, the back film 40 may be removed from the mold 60 at the same time as the demolding, or after demolding.

Removing the back film 40, when the case plate 10 is mounted on the LCD unit or keypad unit of the mobile device, use a double-sided tape or the like because the back film 40 is not well adhered to the double-sided tape. to be. Therefore, when the back film 40 does not need to be strongly attached to the mobile device, the back film 40 may not be peeled off.

By inserting the resin between the front film and the back film as described above, even if the resin layer is made of curved or irregular surface, it is possible to clearly print character strings such as logos, figures, letters, numbers or symbols on the surface. .

5 is a flowchart illustrating a method of manufacturing a case plate of a mobile device according to another embodiment of the present invention.

Referring to FIG. 5, the process of steps S51 to S53 is performed in the same manner as the above-described embodiment, and thus a detailed description thereof will be omitted.

The front film 20 in which the coating layer 22 and the base pattern layer 26 are formed through the process of steps S51 to S53 is mounted inside the mold 60 and resin is injected into the back side (step S54).

On the other hand, a second printing layer such as a character string such as the logo 16 or the company name 18 is formed on the transfer film through a separate process (step S55).

The transfer film generally has a structure in which a protective coating layer is formed on the film base, and the second printing layers 16 and 18 are formed on the protective coating layer.

In this way, the transfer films on which the second print layers 16 and 18 are formed are aligned with the second print layer facing the resin layer 30 of the front film 20 (step S56).

After the alignment is completed, the transfer film is hot pressed to apply heat and pressure (step S57).

By applying heat and pressure to the transfer film, the second printed layer such as the logo 16 formed on the transfer film or the character string of the manufacturer name 18 is transferred to the surface of the resin layer 30.

Then, the film base of the transfer film is peeled off (step S58).

Accordingly, the second printed layer such as the logo 16 transferred to the surface of the resin layer 30 or the character string of the manufacturer name 18 can be protected from the outside by the protective coating layer.

Since the transfer film is hot pressed to transfer the printed layer to the resin layer, even if the resin layer is formed of curved or irregular irregular surfaces, it is possible to clearly print character strings such as logos, figures, letters, numbers, or symbols on the surface thereof. Will be.

In the above, a preferred embodiment of the present invention has been described using a mobile device as an example, but various changes and modifications can be made at the level of those skilled in the art.

For example, the case plate manufactured according to the present invention can be used for various kinds of mobile devices such as mobile phones and PDAs, keypads for laptop computers, computer keyboards, etc. It can also be applied to the case plate of home appliances.

Therefore, the scope of the present invention should not be limited to the above embodiments, but should be determined by the claims described below.

According to the present invention as described above, even if the shape of the case plate is not a flat surface or irregular irregular surface, there is an advantage that it is possible to clearly print a character string, such as logos, figures or letters, numbers or symbols.

Furthermore, the case plate to be manufactured has the advantage of giving a three-dimensional appearance and beautiful appearance because the strings such as logos, figures or letters, numbers, or symbols are printed apart from each other.

Claims (5)

Mounting a front film formed by patterning a coating layer or a first printing layer on an inner side of a mold; Mounting a rear film formed by patterning a second printing layer on the other inner side of the mold so as not to overlap with the coating layer or the first printing layer; Insert-injecting a resin between the front film and the back film; And After the injected resin is cured, the case plate manufacturing method for an electronic device comprising the step of demolding. The method of claim 1, further comprising peeling the back film after the demolding. Mounting a front film formed by patterning a coating layer or a first printing layer on an inner side of a mold; Forming a resin layer by injecting and curing a resin into the coating layer or the first printing layer of the front film; Arranging a transfer film formed by patterning a second printing layer on the resin layer so as not to overlap the coating layer or the first printing layer; And And transferring the second printed layer onto the resin layer by applying heat and pressure to the transfer film. The method of claim 3, further comprising peeling the film base of the transfer film. The case plate for an electronic device manufactured by the method of any one of Claims 1-4.

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