KR100634016B1 - Display window having recess and method for producing the same - Google Patents

Abstract

A display window having a concave portion and a fabrication method thereof are provided to process the concave portion in circular bite type while the concave portion is processed during a flat board process, thus the concave portion can have a smooth surface while the window can be fabricated in various types with excellent transparency. A board made of a transparent material is prepared(100). Paints are applied to a rear side of the board in predetermined patterns, to form an opaque outer circumferential unit(110). The board is cut and processed to form a concave portion(120). The board is cut in desired window shape, to complete fabrication of a window(130). The cutting process is performed by using a bite having a circular bite tip.

Description

DISPLAY WINDOW HAVING RECESS AND METHOD FOR PRODUCING THE SAME

1 is a top view of a window according to one embodiment of the present invention.

2 is a sectional view of the window of FIG. 1;

3 is a top view of a window according to another embodiment of the present invention.

4 is a cross-sectional view of the window of FIG. 3.

5 is a flowchart showing a window manufacturing method according to the first embodiment of the present invention.

6A is a diagram showing a byte used in the window manufacturing method of the present invention.

FIG. 6B shows the byte tip of the byte of FIG. 6A. FIG.

7 is a flowchart illustrating a method of manufacturing a window according to the second embodiment of the present invention.

8 is a flowchart illustrating a method of manufacturing a window according to the third embodiment of the present invention.

9 is a diagram illustrating a configuration of a general mobile phone.

* Description of the symbols for the main parts of the drawings *

1, 2: Windows 10: transparent part

12: outer peripheral portion 14: recessed portion

16: figure 18: paint

20: through hole 22: bite tip

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display window and a method for manufacturing the same, and more particularly, to a display window and a method for manufacturing the same, which are used in a wireless communication terminal display unit and having a recess formed by three-dimensional processing.

Recently, due to the rapid development of wireless communication, portable wireless communication terminals such as mobile phones and PDAs are widely used. In general, the wireless communication terminal includes a display unit for displaying an input content of the user or an operating state of the terminal.

Representatively, the configuration of a general folding cellular phone will be described. 9 is a diagram illustrating a configuration of a general mobile phone. The mobile phone largely includes a main body 60 including a keypad and microphone for input, and a flip 62 provided with a speaker for audio output, a display for visual output, and the like. Through-holes and uneven parts 70 are formed in the part where the speaker is installed so that the output of the speaker can be well transmitted to the user while the user can easily identify the location of the speaker. LCDs are widely used as the display, and windows 64 are provided on the liquid crystals so that the liquid crystals are not exposed and protected.

The window 64 includes a transparent portion 66 for viewing the display content of the liquid crystal and an outer circumferential portion 68 surrounding the transparent portion 66. The transparent portion 66 is made of a material having good transmittance since the liquid crystal can be transmitted as it is without distortion of the display content, and generally, special glass or acrylic material is used. Unlike the transparent portion, the outer circumferential portion 68 is formed to be opaque so that the structure inside the flip 62 cannot be seen, and is generally manufactured by coating an opaque or reflective film or insert molding including a film. do.

Conventionally, as the method of manufacturing the window 64, there existed the method by injection molding and the method by flat plate processing.

The injection method specifically uses in-mold injection or insert injection. In the case of using insert injection, a film in which a predetermined form is printed is inserted into an injection mold to form an opaque outer peripheral portion 68, and injection molding such as acrylic is performed. In the case of using in-mold injection, a transfer film printed with a predetermined shape is inserted into an injection mold and injection is performed to simultaneously perform transfer and injection of a desired pattern.

However, in the method using injection molding, in particular the method using insert injection, since the film remains inside the injection molding, the film is present not only in the outer peripheral portion 68 but also in the transparent portion 66 of the window 64. Therefore, there existed a problem that transparency of the transparent part 66 falls with a film. In addition, the material that can be used for injection molding has a problem that scratches are liable to occur because the hardness thereof is low, such as pencil hardness of 3h or less, and thus the visibility of the liquid crystal through the transparent part 66 is lowered.

Next, the conventional method of manufacturing the window 64 by flat plate processing is demonstrated. First, a plate made of a material such as acrylic is prepared, and an opaque paint is printed or deposited in a predetermined form to form the outer peripheral portion 68. Thereafter, the plate is cut (routed) in the form of a window 64 to complete the window 64. According to such a flat plate process, since the hardness of a board | plate material is excellent in pencil hardness of 5 h or more, it has the characteristic which is resistant to a scratch compared with the window by injection processing. In addition, since vapor deposition or printing is used to form the outer circumferential portion 68, no material other than the plate is added to the transparent portion 66, so that the transparency may not be reduced.

However, in the conventional flat plate processing method, it is only possible to perform two-dimensional cutting after printing or deposition on a plate, and thus only flat-shaped processing is possible. Therefore, there is a problem that the degree of freedom in design is low as compared with the method by injection molding which can form three-dimensional curved surfaces.

In addition, since three-dimensional processing is impossible in flat plate processing as mentioned above, it is impossible to form the through-hole and the uneven | corrugated part 70 formed in the speaker part in the flip 62 on a window, and therefore, the through-hole and uneven | corrugated There is a problem that the assembly process of the cellular phone is complicated because the parts having the portion 70 must be separately formed and joined to the flip 62.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a window manufacturing method capable of manufacturing a three-dimensional processing and high hardness window.

Moreover, an object of this invention is to provide the window manufacturing method which can manufacture the window which is smooth in appearance by forming the recessed part which has a smooth surface.

In addition, an object of the present invention is to provide a method for manufacturing a window that does not need to combine a separate part in the speaker mounting portion by forming a recess and a through hole in the window.

On the other hand, an object of the present invention is to provide a window having a smooth appearance, including a recess having a smooth surface.

Moreover, an object of this invention is to provide the window which provided the recessed part and the through-hole in the speaker installation position.

In order to achieve the above object, according to an aspect of the present invention, in the method of manufacturing a window for protecting a mobile phone display, preparing a transparent plate, forming a recess by cutting at a predetermined position of the plate, and the There is provided a window manufacturing method comprising the step of cutting the plate into the shape of a window.

Preferably, the forming step is performed by the cutting process using a bite having a circular bite tip.

In addition, the forming step is preferably performed by the cutting process using a bite having a bite tip of natural diamond material.

In order to achieve the above object, according to another aspect of the present invention, in the method of manufacturing a window for protecting a mobile phone display, preparing a transparent plate, forming a recess by cutting at a predetermined position of the plate, the recess A method of manufacturing a window is provided, including mirror polishing the surface of the portion, and cutting the plate into the shape of the window.

The forming step is preferably performed by the cutting process using a bite having a circular bite tip.

In order to achieve the above object, according to another aspect of the present invention, in the method of manufacturing a window for protecting a mobile phone display, preparing a transparent plate, the step of forming a recess first by a rough cutting process at a predetermined position of the plate And a step of finally cutting the recess to form the recess, mirror polishing the surface of the recess, and cutting the plate into the shape of the window.

The final forming step is preferably performed by the fine cutting process using a bite having a circular bite tip.

In addition, the final forming step is preferably to perform the fine cutting process using a bite having a bite tip of natural diamond material.

Also preferably, the final forming may be performed in the bit cutting direction and the feeding direction opposite to the yellow cutting process.

On the other hand, in order to achieve the above object, according to an aspect of the present invention, in the window for protecting the mobile phone display, a transparent portion for allowing the user to recognize the display content of the display, and an outer peripheral portion such that the portion other than the display cannot be seen And a concave portion having a curved smooth surface on the outer circumference thereof is provided.

Preferably, the recess is formed at a position corresponding to the speaker installation position of the mobile phone, and the recess is formed with a through hole.

EMBODIMENT OF THE INVENTION Hereinafter, specific embodiment of this invention is described with reference to attached drawing. The present invention will be described with reference to shapes, materials, and process steps of specific windows, recesses, and bites, which are merely examples, and those skilled in the art will be able to variously modify or change them without departing from the spirit of the present invention.

1 is a diagram illustrating a window according to an embodiment of the present invention. The window 1 of this embodiment includes the transparent part 10 and the outer peripheral part 12, and the recessed part 14 is formed in the outer peripheral part 12. As shown in FIG. The window 1 is manufactured by cutting the board | plate material of transparent and high hardness materials, such as a special glass and an acrylic, as a whole into a predetermined form. By forming the concave portion 14 in such a plate, the appearance of the window 1 can be made smooth and ultimately the appearance of the cellular phone can be made beautiful.

2 is a cross-sectional view taken along the line AA ′ of the window of FIG. 1. The paint 18 is printed or deposited at a position corresponding to the outer circumferential portion 12 of the window 1 to render the outer circumferential portion 12 opaque, while the paint 18 is disposed at a position corresponding to the transparent portion 10. It doesn't work. Therefore, no material is added to the transparent portion 10 other than the material of the window 1 itself, and the transparency of the transparent portion 10 does not decrease.

On the other hand, two or more different paints may be printed or superimposed at predetermined positions, respectively, to divide the outer circumferential portion 12 into two or more zones as shown in FIG.

As shown in FIG. 1, a letter or other figure 16 may be formed in the recess 14. The figure 16 can be formed into a transparent figure by removing the paint 18 applied at a desired position in a predetermined form. Alternatively, the figure 16 of a color different from the outer circumferential portion 12 can be formed by printing or depositing the heterogeneous paint again in a predetermined form without removing or removing the paint 18. Thus, when forming the figure 16 in the recess 14 formation position, a beautiful external appearance can be acquired compared with the case of forming a figure in a flat part.

Meanwhile, as shown in FIG. 2, the recess 14 may have a curved shape. In addition, the recess 14 can have a very smooth surface. In this case, the recess 14 can be recognized as visually convex by the optical effect, whereby the window 1 has a more smooth appearance than when the simple recess is formed.

3 is a view showing a window according to another embodiment of the present invention. In FIG. 3, the same reference numerals are used for the same components as the windows of FIG. 1 and will not be described in detail. The window 2 of the present embodiment includes a transparent portion 10 and an outer circumferential portion 12, and recesses 14 may be formed in the outer circumferential portion 12.

4 is a cross-sectional view taken along the line BB ′ of the window of FIG. 3. The paint 18 is printed or deposited at a position corresponding to the outer circumferential portion 12 of the window 2 to render the outer circumferential portion 12 opaque, but the paint 18 is not disposed at a position corresponding to the transparent portion 10. . Therefore, no material is added to the transparent portion 10 except for the material of the window 2 itself, and the transparency of the transparent portion 10 does not decrease.

On the other hand, the recess 14 may be formed at a position corresponding to the speaker installation position of the mobile phone. In addition, the through hole 20 is formed in the recess 14, so that the audio output of the speaker can be better transmitted to the user. In this case, it is possible to complete the assembly by covering all the display unit and the speaker installation unit by combining only the window 2, without the need to combine a separate component to the speaker installation unit when manufacturing a mobile phone. Therefore, the number of parts and the number of processes required for the manufacture of the mobile phone can be reduced, and manufacturing cost can be reduced and efficiency can be improved. In addition, since the user can visually easily recognize the speaker installation position by the formation of the concave portion 14, the user's convenience can be increased.

Meanwhile, as shown in FIG. 3, the recess 14 may have a curved shape. In addition, the recess 14 can have a very smooth surface. In this case, the recess 14 can be recognized as visually convex by the optical effect, whereby the window 2 has a more smooth appearance than when the simple recess 14 is formed.

Although the present embodiment has been described above in connection with a single concave portion 14, figure 16, and through hole 20 of a particular form, the shape of the concave portion 14 can be changed as necessary, and the requirements of the designer It is also possible to form a plurality of recesses 14 in accordance with this. For example, a concave portion of a predetermined figure or character may be formed in the window, and as shown in FIG. 1, it is also possible to form a boundary line as a concave portion when the outer peripheral portion 12 is partitioned.

In addition, it is also possible to form various recesses 14 by varying the cross-sectional shape of the recesses 14 in shapes other than curved surfaces such as triangles, cones, and cones, and these variations can be easily recognized by those skilled in the art. It belongs to the scope of the present invention.

Next, the manufacturing method of the window which concerns on this invention is demonstrated.

5 is a flowchart showing a window manufacturing method according to the first embodiment of the present invention. The manufacturing method of this embodiment first prepares a board | plate material of transparent materials, such as acrylic or special glass (step 100). Next, in step 110, the paint is applied to the rear surface of the plate in a predetermined pattern to form an opaque outer peripheral portion 12. At this time, transparency is maintained by not applying a coating material to the transparent portion 10. The paint may include metals or metal oxides such as nickel (Ni), aluminum (Al), silicon oxide (SiO ₂ ), titanium oxide (TiO ₂ ), chromium (Cr), copper (Cu), and the like. In addition, the coating of the paint can be performed by printing by silk screen or the like, or by vapor deposition.

Next, in step 120, the plate is cut to form the recess 14. At this time, the concave portion 14 may be formed in a curved shape, and cutting may be performed using a bite having a circular tip.

Fig. 6A is a front view and a side view showing the bite used for cutting of the present invention, and Fig. 6B is an enlarged view of the bite tip. The bite is a tip bite type and has a circular tip 22. In general, the roughness of the cutting surface is inversely proportional to the nose radius R of the bite. Therefore, by using a bite having a circular tip 22 rather than a general straight tip, the cutting surface can be smoother and the cutting trace can be minimized. It is also possible to further increase the nose radius R to obtain a more excellent cutting surface. As a material of the bite tip 22, natural diamond can be used. In this case, a more precise and smooth cutting surface can be obtained. Therefore, not only the appearance of the window is made smooth by the formation of the recess 14, but also the recess 14 formed as a curved surface and having a smooth surface can be recognized as visually convex, so that the appearance is more elegant. Lose. In addition, it is also possible to enhance the visual effect by forming both the concave portion 14 which has a smooth curved surface and can be recognized as a convex portion, and a general concave portion.

Although the present embodiment is described in connection with a tip byte, the present invention is not limited thereto, and it will be readily appreciated by those skilled in the art that various types of bytes can be used if a circular byte blade is used.

Finally, in step 130, the plate is cut in accordance with the desired window shape to complete the manufacture of the window.

7 is a flowchart showing a window manufacturing method according to the second embodiment of the present invention. The manufacturing method of this embodiment is the same as that of the first embodiment except for the recess cutting step and the polishing step, and the detailed description of the same step is omitted. The manufacturing method of this embodiment first prepares a transparent board | plate material (step 200), and forms a opaque outer peripheral part by apply | coating paint on a board | plate back surface (step 210).

Next, cutting is performed on the plate to form the recess 14 (step 220). At this time, the recess 14 can be machined into a curved surface, and the cutting process can be performed using a circular bite as shown in Fig. 6A.

Next, in step 230, mirror processed polishing is performed on the processed recess 14. By adding the mirror polishing step in this manner, in this embodiment, it is possible to obtain a window having a smooth cutting surface even when the cutting surface is relatively roughly processed. Therefore, the cutting in step 220 may be relatively rough, and the material of the bite tip 22 may be reduced in cost by using not only natural diamond but also artificial diamond. In addition, since it is also possible to cut for a short time compared with the embodiment of FIG. 5, cutting cost and time can be reduced compared with the previous embodiment.

As such, by adding the mirror polishing step (step 230) after machining the recess 14 relatively roughly, the formation of the recess 14 having the same smooth surface as in the previous embodiment is possible, and the recess When (14) is processed into a curved surface, a visual effect recognized as convex can be obtained.

Finally in step 240 the plate is cut into the shape of the desired window to complete the manufacture of the window.

8 is a flowchart showing a window manufacturing method according to the third embodiment of the present invention. The manufacturing method of this embodiment is the same as that of the first embodiment except for the step of forming the recesses and the polishing step, and the detailed description of the same steps is omitted. The manufacturing method of this embodiment first prepares a transparent board | plate material (step 300), and forms a opaque outer peripheral part by apply | coating paint on a board | plate back surface (step 310).

Next, in step 320, the recessed portion 14 is primarily processed by rough cutting the predetermined position of the outer peripheral portion 12 of the plate. In this step, it is sufficient to process the recess 14 relatively roughly. As the material of the bite tip 22 used at this time, natural diamond or artificial diamond can be used.

Next, in step 330, the recess is cut to obtain the recess 14 of the smooth cutting surface. In this step, the cutting direction and the feeding direction of the bite in the cutting process may be opposite to the bite rotating direction and the feeding direction of step 320. Thus, the cutting trace remaining on the cutting surface in step 320 can be removed by step 330, and the cutting surface can be smoothed. As the bite tip 22 in this step 330, natural diamond can be used.

The surface of the recess 14 processed in step 340 is mirror polished to obtain a smooth surface. In the present embodiment, since the two-stage cutting processing of steps 320 and 330 is performed, the execution time of the mirror polishing process can be shortened and the cost can be reduced as compared with the second embodiment.

Finally, the plate is cut into the desired window shape to complete the manufacture of the window (step 350).

As mentioned above, although the manufacturing method of the window in which the recessed part 14 was formed was demonstrated, it is also possible to add the step of forming the figure 16 and / or the through-hole 20 to this method.

For example, in the above embodiments, it may be added to form the figure 16 after the steps 110, 210, and 310 of applying the paint. The figure forming step may include removing the paint in a predetermined shape, removing the paint in a predetermined shape, reapplying the heterogeneous paint, or additionally applying the heterogeneous paint in the predetermined shape. It is also possible to add this figure forming step after the forming step 120, 220, 330 of the recess, or after the mirror polishing step 230, 340.

As another example, in the above embodiments, the step of forming the through hole 20 after the recess forming step 120, 220, 330 may be added. The through hole forming step may include forming a through hole of a predetermined shape by drilling, or forming a through hole of a predetermined shape by cutting. In addition, the step of forming the through hole may be added after the step of applying the paint (110, 210, 310).

In addition, the order of processes described in connection with the above embodiments is illustrative, and those skilled in the art will be able to easily change the order, which is obviously also within the scope of the present invention.

According to the present invention, three-dimensional window processing is possible by forming a recess in window production by flat plate processing, and the degree of freedom in design can be increased while maintaining the hardness of the window.

Moreover, according to this invention, the recessed part which has a smooth curved surface is formed, and the window with a favorable appearance can be manufactured.

On the other hand, according to the present invention, since the through-hole is formed in the concave portion, the manufacture of the mobile phone is completed only by the combination of the windows without the need to combine a separate part in the speaker formation position, it is possible to increase the efficiency of the mobile phone manufacturing process and reduce the cost have.

Claims (11)

In the method of manufacturing a window for protecting a mobile phone display, Preparing a transparent plate; Forming a recess at a predetermined position of the plate by cutting; And And cutting the plate into the shape of the window. The method of claim 1, Wherein the forming step performs the cutting operation using a bite having a circular bite tip. The method of claim 1, Wherein the forming step is to perform the cutting process using a bite having a bite tip of natural diamond material. In the method of manufacturing a window for protecting a mobile phone display, Preparing a transparent plate; Forming a recess at a predetermined position of the plate by cutting; Mirror polishing the surface of the recess; And And cutting the plate into the shape of the window. The method of claim 4, wherein Wherein the forming step performs the cutting operation using a bite having a circular bite tip. In the method of manufacturing a window for protecting a mobile phone display, Preparing a transparent plate; Forming a recess primarily at a predetermined position of the plate by yellow cutting; Forward cutting the recess to finally form the recess; Mirror polishing the surface of the recess; And And cutting the plate into the shape of the window. The method of claim 6, And the final forming step performs the finishing operation using a bite having a circular bite tip. The method of claim 6, The final forming step is to perform the fine cutting process using a bite having a bite tip of natural diamond material. The method of claim 6, The final forming step is to perform the forward cutting process in the bite rotation direction and the feed direction opposite to the rough cutting process. In the window for mobile phone display protection, A transparent unit for allowing a user to recognize display contents of the display; And It includes an outer periphery that makes it impossible to see parts other than the display, And a concave portion having a curved smooth surface on the outer circumference thereof. The method of claim 10, The recess is formed at a position corresponding to the speaker installation position of the mobile phone, And a through hole formed in the concave portion.

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