KR101068089B1 - Keypad for portable appliance and thereof manufacturing method - Google Patents

Abstract

The present invention provides an upper corner uneven region 11, a key upper flat region 12 and a key upper uneven region 13 provided to the film 10, and a lower corner flat region provided to the UV curable liquid resin layer 20. (21), the lower key uneven region 22 and the lower key flat region 23 are glossy. Gloss, semiglow (G2); Medium gloss or matt [G3]; Matte] relates to a keypad for a mobile terminal and a method of manufacturing the same to allow a two-dimensional or three-dimensional texture.

Film, upper corner uneven area, upper key uneven area, upper upper uneven area, UV curable liquid resin layer, lower corner flat area, lower key uneven area, lower key flat area, pattern, glossy, semi-gloss, matt

Description

KEYPAD FOR PORTABLE APPLIANCE AND THEREOF MANUFACTURING METHOD}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keypad for a mobile terminal and a method of manufacturing the same. More specifically, the present invention provides a two-dimensional or three-dimensional feeling of gloss, semi-gloss, or matt. The present invention relates to a keypad for a portable terminal and a method of manufacturing the same.

In general, a keypad for a portable terminal is applied to a portable terminal including a home telephone, a PDA, a cellular phone, and the like, and is used as a switching member for generating a signal in association with a circuit board.

In the following description, the keypad for a portable terminal will be described as an example for convenience of a cellular phone keypad, and the present invention is not limited thereto.

1 is a perspective view showing a product to which a keypad for a general portable terminal is applied, and FIG. 2 is a sectional view including a dome switch and a circuit board showing a keypad for a general portable terminal.

As shown in FIGS. 1 and 2, a keypad 50 for a general portable terminal is basically provided in a front housing F having a lamp L for providing a light source and placed on a dome switch D. 20) and a key 10 having a font 11a engraved with symbols, letters, numbers, etc. on the keytop 11 so as to be identified by each function, such as a dial key or a function key.

The pad 20 has a boss 21 protruded to touch the contact point H1 of the circuit board H while being interlocked with the elasticity of the dome switch D, and the key 10 is the key top 11. The font 11a is provided in such a manner as to remove the paint by printing, spraying, painting or after painting, by laser processing.

By the way, since the font 11a is applied to the key top 11 by printing, spraying, painting or painting after laser processing (removal of a portion of the painting), the font 11a may be used for a long time. There is a phenomenon that is easily erased, it is extremely difficult to implement a precise and sophisticated three-dimensional font (11a) by completing the keypad 50 by the injection of the synthetic resin, the thickness is thick, the production cost is disadvantageous.

3 is a sectional view showing the principal parts of a keypad for a portable terminal according to the prior art.

The keypad for a mobile terminal according to the prior art offset prints the base printed layer 2 and the shielded printed layer 3 under the film 1, as shown in FIG. 3, and gives a font 4 at the center thereof. The binder 5 is coated and the silicone resin layer 6 having the boss 7 is coalesced to press the dome switch 8 of the circuit board 9.

The keypad for a mobile terminal according to the related art having such a structure is provided with a back printing layer 2 and a font 4 under the film 1, thereby preventing the font 4 from being erased even if used for a long time. Although the production cost is low, the productivity can be increased, but various light effects due to the differentiation of the gloss can not be realized, and the deformation of the film 1 occurs in the process of forming and cooling the film 1 with a heat press mold. , When the font 4 is pressed according to excessive slimming, the boss 7 has a problem of being sensitively tactile.

Disclosure of Invention An object of the present invention is to provide a keypad for a mobile terminal and a method for manufacturing the same, which can give a two-dimensional or three-dimensional feeling such as glossy, semi-gloss or matt. have.

It is an object of the present invention to provide a keypad for a mobile terminal and a method of manufacturing the same, which can prevent deformation of the film by the UV curable liquid resin layer even when the film is formed.

It is an object of the present invention to provide a keypad for a mobile terminal and a method of manufacturing the same so that the key upper flat area and the key upper uneven area are alternately jagged and feel three-dimensional.

Method of manufacturing a keypad for a mobile terminal according to the present invention for achieving the above object,

The film is pressed and UV cured in a state where the UV curable liquid resin is filled on the UV mold in which the UV key uneven region and the UV key flat region are alternately formed between the UV corner flat regions, Providing a UV curable liquid resin layer in which the lower key flat region is alternately transferred;

Offsetting the base printing layer and the shielding printing layer in a portion other than the font area below each center of the key lower uneven area and the flat area below the key, and simultaneously printing the font area to complete the font. Applying a binder under the shielding printing layer to form a binder layer,

And applying a silicone liquid resin on the binder layer and pressing and thermally curing the upper mold with a boss groove in a state where the film is brought into contact with the lower mold to provide a silicone resin layer having a boss. The basic features of the technical method.

The present invention for achieving the above object,

In the keypad for a mobile terminal having a font for transmitting the light of the lamp and including a boss for pressing the dome switch of the circuit board,

A film in which a key upper flat area and a key upper uneven area are alternately formed between upper corner uneven areas;

A UV curable liquid resin layer cured under the film and having alternately formed lower key uneven areas and lower key flat areas between lower corner flat areas;

It is a basic feature of the technical configuration that is incorporated under the UV curable liquid resin layer to include a silicone resin layer having the boss.

The present invention is a gloss of a combination of an upper corner uneven region, a key upper flat region and a key upper uneven region and a lower corner flat region, a key lower uneven region and a lower key flat region imparted to the UV curable liquid resin layer. There is an effect that can feel a two-dimensional or three-dimensional texture of light (glossy), semi-gloss (matte) or matt (light).

According to the present invention, even if the film is formed, since the UV curable liquid resin layer is provided directly under the film, deformation of the film can be prevented in advance, and the boss is pressed when the font is pressed while maintaining the slimness by the UV curable liquid resin layer. There is an advantage that can be blocked in advance even a sensitive sensation phenomenon.

The present invention has an advantage that the key upper flat area and the key upper uneven area are alternately jagged, for example, by treating the thickness differently in a zigzag form to feel a three-dimensional effect.

According to the present invention, the portion where the upper key uneven region and the lower key uneven region overlap is matt, and the portion where the upper key upper region and the lower key uneven portion overlap is semi-reflective, and the upper key upper region and the lower key The overlapping part of the flat area is expressed by the glossy, which has the effect of maximizing discrimination and distinguishing power.

The present invention has the effect of completing the keypad for a more beautiful portable terminal by including a pattern in the UV curable liquid resin layer.

The present invention has the effect of improving the three-dimensional feeling and click feeling by forming alternately jagged form the upper key flat region and the upper key uneven region of the film.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a keypad for a mobile terminal and a method of manufacturing the same according to the present invention will be described with reference to the drawings, and a plurality of the embodiments may exist, and through these embodiments, the object, features and You will be able to better understand these advantages.

4 is a process chart showing a method for manufacturing a keypad for a mobile terminal according to the present invention, and the "flat area" to be described below refers to a smoothly polished area having a shiny luster. "Concave-convex region" refers to an area that has a matte finish that is roughly treated with extreme roughness.

In the method for manufacturing a keypad for a mobile terminal according to the present invention, as shown in FIG. 4, a UV mold having an UV key uneven area 72 and a UV key flat area 73 alternately disposed between the UV corner flat areas 71. The film 10 made of PC, PET, PU, or PMMA is pressed and UV cured in a state where the UV curable liquid resin is filled on the 70, and the lower key uneven area 22 and the lower key are located between the lower corner flat areas 21. The UV curable liquid resin layer 20 to which the flat region 23 is alternately transitioned is provided (S10).

That is, the UV corner flat region 71 is provided to the UV mold 70, and the UV key uneven region 72 and the UV key flat region 73 are alternately formed between the UV corner flat region 71. Pressing and UV curing the film 10 by filling the UV curable liquid resin in the state so that the lower key uneven area 22 and the lower key flat area 23 alternately transfer between the lower corner flat areas 21. The UV curable liquid resin layer 20 is to be prepared.

In this case, in FIG. 4, the lower key uneven area 22, the lower key flat area 23, and the lower key uneven area 22 are arranged side by side between the lower corner flat areas 21, depending on the condition of the mobile terminal. Of course, the number and order can be added or changed.

Subsequently, the base printing layer 31 and the shielding printing layer 32 are offset-printed in a portion other than the font area 33 below each center of the key lower uneven area 22 and the key lower flat area 23. At the same time, the font area 33 is printed to complete the font 40, and a binder layer 50 is prepared by applying a binder under the shielding print layer 32 including the font 40 (S20).

Here, in order to facilitate the incorporation of the shielding printed layer 32 and the silicone resin layer 60 to be described later, a binder layer 50 is provided therebetween, and thus a primer adhesive may be applied.

Then, the upper mold 80 with the boss groove 81 formed in a state where the film 10 is inverted and the silicone liquid resin is applied on the binder layer 50 and the film 10 is placed on the lower die 90. Pressing and thermosetting to prepare a silicone resin layer 60 having a boss 61 (S30).

Accordingly, the lower key uneven area 22 and the lower key flat area 23 provided between the lower corner flat areas 21 of the UV curable liquid resin layer 20 are polished onto the film 10. ) And matt G3 can be displayed while being distinguished from each other, so that the click areas between the fonts 40 can be distinguished and identified as shown in FIG. 5.

5 is a photograph showing a keypad for a mobile terminal according to the present invention.

At this time, in step S30, the film 10 is squeezed by the lower die 90 in which the mold key flat area 92 and the mold key uneven area 93 are alternately formed between the mold corner uneven areas 91. The key top planar region 12 and the key upper recessed and projected region 13 may be alternately transferred to the film 10 between the corner uneven regions 11.

Accordingly, the key upper uneven region 13 is unconditionally matt G3, and when the key upper flat region 12 and the key lower flat region 23 coincide with each other, the key upper uneven region 13 becomes glossy. Furthermore, when the key upper flat region 12 and the lower key uneven region 22 coincide with each other, the key light becomes G2. Thus, the keypad for a portable terminal according to the present invention is glossy as shown in FIG. 5. The discrimination and texture of the font 40 can be further improved by the difference in gloss of light G1, semi-gloss G2, and matt G3.

That is, as shown in FIG. 5, the gloss G1, the semi-gloss G2, and the no-gloss G3 are alternately expressed around the font 40 to generate the lamp L. As shown in FIG. Not only can produce a three-dimensional luster by light, but also to implement a shaded three-dimensional font 40 effect.

Preferably, the lower die 90 has a key concave portion 94 and a key protrusion 95 formed alternately to form a film 10 by pressing to form a key top flat region 12 and a key upper uneven region 13. ) Can be alternately jagged.

Even if the film 10 is formed by alternately forming the key recess 94 and the key protrusion 95 in the lower mold 90, the UV curable liquid resin layer 20 is provided directly under the film 10. Therefore, the deformation of the film 10 can be prevented in advance, and furthermore, even when the font 40 is pressed while maintaining the slimness by the UV curable liquid resin layer 20, the boss 61 is sensitively touched. You can block.

In this case, when the key upper flat region 12 and the key upper uneven region 13 are alternately jagged, for example, in a zigzag form, the thickness may be differently expressed, thereby making it possible to feel a three-dimensional effect.

6 is a cross-sectional view showing a keypad for a mobile terminal according to the present invention, Figure 7 is a photograph showing a keypad for a mobile terminal according to the present invention.

In the present invention, the key upper uneven region 22 corresponds to the vertical direction in the vertical direction, and the key lower uneven region 22 corresponds to the vertical direction in the key upper uneven region 13. The width of the key lower concave-convex region 22 is narrower than that of the region 12 so that the portion where the key lower concave-convex region 22 and the key upper flat region 12 overlap with each other is expressed by semi-gloss G2. The overlapping portion of the key lower flat region 23 and the key upper flat region 12 is expressed by a gloss G1, and the key lower flat region 23 and the key upper uneven region 13 overlap with each other. The part is expressed as matt G3, so that the font is a combination of gloss G1, matt G3, and semi-gloss G2 as shown in FIGS. 6 and 7. (40) As well as the ability to discriminate with each other, you can feel a more three-dimensional texture.

More specifically, the keypad for a mobile terminal according to the present invention has a font 40 for transmitting the light of the lamp L, as shown in FIGS. 6 and 7, and the dome switch D of the circuit board H. A film (10) including a boss (61) for pressurizing the key, wherein the key upper flat area (12) and the key upper uneven area (13) are alternately formed between the upper corner uneven areas (11), 10) the UV curable liquid resin layer 20 cured underneath and the key lower uneven region 22 and the key lower flat region 23 alternately formed between the lower corner flat region 21 and the UV curable liquid water. It may include a silicone resin layer 60 incorporated under the ground layer 20 and having a boss 61.

At this time, the key lower uneven region 22 corresponds to the key upper flat region 12 in the vertical direction, and the key lower flat region 23 corresponds to the key upper uneven region 13 in the vertical direction. The lower key uneven area 22 corresponds to the lower key part 12 so that the overlapping part of the lower key uneven area 22 and the upper key flat area 12 can be expressed by half-glow G2. The portion where the lower flat region 23 and the upper key flat region 12 overlap with each other may be expressed as a gloss (G1), and the portion where the upper key uneven region 13 and the lower key flat region 23 overlap with each other. Can be expressed as matt (G3).

8 is a process chart showing a method for manufacturing a keypad for a mobile terminal according to another embodiment of the present invention, Figure 9 is a photograph of a keypad for a mobile terminal according to another embodiment of the present invention.

The keypad for a portable terminal according to another embodiment of the present invention may include a pattern 24 applied to the UV curable liquid resin layer 20 as shown in FIG. 9.

As shown in FIG. 9, the pattern 24 may appear as shown in FIG. 9 by providing a pattern protrusion 74 or a pattern groove 74 on the UV mold 70 as shown in FIG. 8. Of course, the pattern 24 may be implemented.

At this time, the base printing layer 31 and the shielding printing layer 32 are offset-printed in a part except for the font area 33 below each center of the key lower uneven area 22 and the key lower flat area 23. The font area 33 may be printed to complete the font 40, and may include a binder layer 50 applied under the shielding printing layer 32 including the font 40 to adhere the silicone resin layer 60. have.

In addition, the film 10 is formed to alternately form the key upper flat region 12 and the key upper uneven region 13 in a jagged fashion so as to improve a three-dimensional feeling and a click feeling.

The present invention can be used in the field of portable terminals including home telephones, PDAs or cellular phones.

1 is a perspective view showing a product to which a keypad for a general mobile terminal is applied.

2 is a sectional view including a dome switch and a circuit board showing a keypad for a general portable terminal.

3 is a sectional view showing the principal parts of a keypad for a mobile terminal according to the prior art;

Figure 4 is a process chart showing a manufacturing method of a keypad for a mobile terminal according to the present invention.

5 is a photograph showing a keypad for a mobile terminal according to the present invention.

6 is a cross-sectional view showing a keypad for a mobile terminal according to the present invention.

Figure 7 is a photograph showing a keypad for a mobile terminal according to the present invention.

8 is a process chart showing a manufacturing method of a keypad for a portable terminal according to another embodiment of the present invention.

Figure 9 is a picture taken a keypad for a mobile terminal according to another embodiment of the present invention.

       Explanation of symbols on the main parts of the drawings

L: Lamp H: Circuit Board

D: dome switch 10: film

11: upper corner uneven area 12: key upper flat area

13 key uneven region 20: UV curable liquid resin layer

21: lower corner flat area 22: key lower uneven area

23: flat area under the key 24: pattern

31: base printed layer 32: shielded printed layer

33: font area 40: font

50: binder layer 60: silicone resin layer

61: Boss 70: UV Mold

71: UV corner flat area 72: UV key uneven area

73: UV key flat area 74: Pattern protrusion, pattern groove

80: lower die 81: boss groove

90: upper mold 91: mold corner uneven region

92: mold key flat area 93: mold key uneven area

94: key recess 95: key protrusion

G1: Glossy G2: Semi-gloss

G3 matt

Claims (7)

The film 10 is compressed in the state where the UV curable liquid resin is filled on the UV mold 70 in which the UV key uneven region 72 and the UV key flat region 73 are alternately formed between the UV corner flat regions 71. And providing a UV curable liquid resin layer 20 in which the key lower uneven region 22 and the key lower flat region 23 are alternately transferred between the lower corner flat regions 21 by UV curing. and, At the same time, the base printing layer 31 and the shielding printing layer 32 are offset-printed in a portion except for the font area 33 below each center of the key lower uneven area 22 and the key lower flat area 23. Printing the font area 33 to complete the font 40 and applying a binder under the shielding printing layer 32 including the font 40 to prepare a binder layer 50 (S20); After applying the silicone liquid resin on the binder layer 50, the film 10 is placed on the lower die 90 in contact with the upper mold (80) formed with the boss groove 81 in a state of being pressed and thermally cured And a step (S30) of providing a silicone resin layer (60) having a boss (61). The method of claim 1, In step S30, the film 10 is squeezed onto the lower die 90 by alternately forming the mold key flat region 92 and the mold key uneven region 93 between the mold corner uneven regions 91. Method for manufacturing a keypad for a mobile terminal, characterized in that the key upper flat area (12) and the key upper uneven area (13) is alternately formed in the film (10) between the corner uneven area (11). The method of claim 2, In the lower die 90, the key recess 94 and the key protrusion 95 are alternately formed to form the film 10 by pressing to form the key upper flat region 12 and the key upper uneven region 13. ) Is a method of manufacturing a keypad for a mobile terminal, characterized in that alternately jagged key shape. The method of claim 3, wherein The key lower uneven region 22 corresponds to the key upper flat region 12 in a vertical direction, The key lower flat region 23 corresponds to the key upper uneven region 13 in the vertical direction, The width of the key lower concave-convex region 22 is narrower than the key upper flat region 12 so that the portion where the key lower concave-convex region 22 and the key upper flat region 12 overlap is semi-glossy (G2). ) And a portion where the key lower flat region 23 and the key upper flat region 12 overlap with each other is represented by a gloss G1, and the key upper uneven region 13 and the key lower flat region ( 23) The overlapping part is a manufacturing method of the keypad for a mobile terminal, characterized in that the expression is matt (G3). In the keypad for a mobile terminal having a font (40) for transmitting the light of the lamp (L) and comprising a boss (61) for pressing the dome switch (D) of the circuit board (H), A film 10 in which the key upper flat area 12 and the key upper uneven area 13 are alternately formed between the upper corner uneven areas 11, UV curable liquid resin layer 20 cured under the film 10 and alternately formed between the lower corner flat region 21 and the lower key uneven region 22 and the lower key flat region 23. It is incorporated under the UV curable liquid resin layer 20 and comprises a silicone resin layer 60 having the boss 61, The key lower uneven region 22 corresponds to the key upper flat region 12 in a vertical direction, The key lower flat region 23 corresponds to the key upper uneven region 13 in the vertical direction, The width of the key lower concave-convex region 22 is narrower than the key upper flat region 12 so that the portion where the key lower concave-convex region 22 and the key upper flat region 12 overlap is semi-glossy (G2). ) And a portion where the key lower flat region 23 and the key upper flat region 12 overlap with each other is represented by a gloss G1, and the key upper uneven region 13 and the key lower flat region ( 23) the overlapping portion is a keypad for a mobile terminal, characterized in that expressed as a matt (G3). In the keypad for a mobile terminal having a font (40) for transmitting the light of the lamp (L) and comprising a boss (61) for pressing the dome switch (D) of the circuit board (H), A film 10 in which the key upper flat area 12 and the key upper uneven area 13 are alternately formed between the upper corner uneven areas 11, UV curable liquid resin layer 20 cured under the film 10 and alternately formed between the lower corner flat region 21 and the lower key uneven region 22 and the lower key flat region 23. It is incorporated under the UV curable liquid resin layer 20 and comprises a silicone resin layer 60 having the boss 61, The base printing layer 31 and the shielding printing layer 32 are sequentially offset-printed on portions other than the font area 33 below each center of the key lower uneven area 22 and the key lower flat area 23, Printed on the font area 33 to complete the font 40, And a binder layer (50) applied below the shielding printing layer (32) including the font (40) to adhere the silicone resin layer (60). The method according to claim 5 or 6, Keypad for a mobile terminal, characterized in that it comprises a pattern (24) applied to the UV curable liquid resin layer (20).

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