KR101241303B1 - Manufacturing apparatus for front panel of display apparatus - Google Patents

Abstract

PURPOSE: An apparatus for manufacturing a front panel of a display device is provided to precisely arrange a base sheet and a die assembly. CONSTITUTION: A base sheet(10) is wound on a supply roll(20). A die assembly(30) includes a first die(33) and a second die(39). The base sheet is transferred from the supply roll to the die assembly. While the second die approaches the first die, the free end portion of a guide pin(35) passes through a through hole. The guide pin is combined with a guide hole(31). The base sheet and the die assembly are accurately arranged.

Description

Manufacturing apparatus for front panel of display apparatus

The present invention relates to a front panel manufacturing apparatus of a display device, and more particularly to a front panel manufacturing apparatus of a display device suitable for continuous production in large quantities.

A display device including a mobile terminal such as a mobile phone, a smart phone, a DMB, and the like has a display unit for visually outputting image information, and the surface of the display unit is covered with a transparent front panel. The front panel protects devices such as an LCD and an LED, and when the ITO film is coated on the front panel, the front panel itself may perform a function of a touch input unit.

1 is a soft film printed with an imark according to the prior art used to continuously manufacture a front panel of a display device, and FIG. 2 is a flexible film and a die during a process of continuously manufacturing a front panel of a display device It is a conceptual diagram which shows a shifted state.

1 and 2, a process of manufacturing a front panel (hereinafter, referred to as a “front panel”) of a display apparatus according to the related art will be described.

The soft film 2 wound on a roll (not shown) is unwound and is supplied between the lower die 5 and the upper die 6, and the soft film 2 is supplied to the dies 5 and 6 at regular intervals. In order to do this, eye marks 3 are formed in the flexible film 2 at regular intervals along the longitudinal direction. The size and thickness of the eye mark 3 are shown to be exaggerated so that the position of the eye mark 3 can be clearly understood.

While the soft film 2 is supplied between the lower die 5 and the upper die 6, when the sensor (not shown) detects the eye mark 3, the soft film 2 stops moving. The upper die 6 is lowered toward the lower die 5. A transparent resin may be filled between the lower surface of the upper die 6 and the upper surface of the soft film 2, and the upper die 6 is pressed while pressing the transparent resin and the soft film 2 to manufacture the front panel. In Fig. 1, a transparent resin is laminated on the region 4 surrounded by the dotted lines.

The sensor for detecting the eye mark 3 has a slight error, and due to the sensor error as shown in FIG. 2, the upper die 6 is moved in a state where the soft film 2 and the dies 5 and 6 are displaced. When lowered, the upper die 6 does not press the region 4 enclosed by the dotted lines in FIG. 1 correctly, but rather presses the region slightly shifted from the region 4. Therefore, since the resin is formed and pressed in a slightly shifted region rather than the region intended to be formed as the front panel, there is a limit that a precise front panel cannot be manufactured.

In addition, the front panel manufactured by this method has a disadvantage in that the surface strength and durability are significantly lower than the glass front panel.

Meanwhile, in recent years, interest in materials having excellent hardness and high hardness of glass, and a method of manufacturing a front panel using such materials has increased. However, even if the front panel is manufactured using a hard material, the same problems as described above naturally occur.

In addition, in order to stack the high hardness material on the depression formed on the upper surface of the lower die 5 shown in FIG. 2 to stack the transparent resin, the high hardness material must be cut and inserted into the depression one by one. If the process is cumbersome, there is an additional problem that continuous production becomes impossible.

Therefore, a new alignment method is needed rather than the eye mark 3 and the sensor.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above problems, and an object thereof is to provide a front panel manufacturing apparatus of a display apparatus capable of precisely aligning a film and a die, and a front panel of the display apparatus manufactured thereby.

Another object of the present invention is to provide a front panel manufacturing apparatus of a display apparatus suitable for continuous production in large quantities and a front panel of the display apparatus manufactured thereby.

It is still another object of the present invention to provide a front panel manufacturing apparatus of a display device suitable for using a material of high hardness and a front panel of the display device manufactured thereby.

In order to achieve the above object, the apparatus for manufacturing a front panel of the display device according to the preferred embodiment of the present invention comprises a flexible film having an adhesive surface and a flexible hard sheet attached to the adhesive surface of the soft film. A base sheet having through holes formed at regular intervals along the longitudinal direction; A feed roll on which the base sheet is wound; And a die assembly having a first die and a second die capable of approaching or away from the first die, wherein the base sheet is supplied from the feed roll to the die assembly A recessed guide hole is formed in a surface corresponding to the second die, and a guide pin fitted into the guide hole is formed in a surface corresponding to the first die of the second die, and the second die is formed in the first die. The free end of the guide pin passes through the through hole during the approach toward the die, and then the base sheet and the die assembly are aligned by fitting the guide pin into the guide hole.

Preferably, the guide hole is formed to be narrower as the depth is deeper, the guide pin is formed to be tapered toward the free end.

Preferably, the second die comprises: a sheet fixing portion having an opening in a center thereof, which can approach or move toward the first die, and which can secure the base sheet in close contact with the first die; And a press die part inserted into an opening formed in the sheet fixing part, approaching or moving away toward the first die, and pressing the base sheet by injecting a transparent resin through the opening part. do.

Preferably, the guide pin is formed on a surface of the seat fixing part corresponding to the first die.

Preferably, the first die has a suction pipe, and the base sheet may be in close contact with the first die by a negative pressure applied to the suction pipe.

Preferably, the front panel manufacturing apparatus further comprises a removal roll wound around the base sheet and positioned near the output end of the die assembly, wherein the flexible hard sheet is formed according to the shape of the front panel of the display device. The panel region portion cut to the thickness of the sheet and the waste region portion other than the panel region portion are partitioned, and the soft film and the waste region portion are wound and removed by the removal roll.

In order to achieve the above object, the apparatus for manufacturing a front panel of a display device according to another exemplary embodiment of the present invention includes a soft film having an adhesive surface and a panel region portion and a waste region portion attached to the adhesive surface of the soft film. A base sheet formed of a flexible hard sheet partitioned and having through holes formed at regular intervals along a length direction; A feed roll on which the base sheet is wound; An alignment member having a first alignment portion and a second alignment portion that can approach or move away from the first alignment portion to align the base sheet released from the feed roll; A die assembly having a first die and a second die that can be approached or away from the first die; And a conveying member for transferring the panel region portion from the vicinity of the output end of the alignment member to the first die, wherein one of the first alignment portion and the second alignment portion is formed with a recessed guide hole, and the other The guide pin is inserted into the guide hole, the first die has a suction pipe, a coupling core is formed on the surface corresponding to the second die of the first die, the first of the second die A core receiving portion for receiving the coupling core is formed on a surface corresponding to the die, and the free end of the guide pin passes through the through hole while the second alignment portion approaches the first alignment portion. The base sheet and the alignment member are aligned by being fitted into the guide hole and the panel region portion corresponds to the coupling core. It has a core coupling hole of the shape, the conveying member transfers the panel region so that the core coupling hole is in a position corresponding to the coupling core, a negative pressure is applied to the suction pipe so that the coupling core to the core coupling hole The panel region portion and the die assembly are aligned by being fitted.

Preferably, the surface of the first die corresponding to the edge portion of the panel region portion so that the panel region portion can be smoothly aligned without being caught by the first die during the alignment process while the coupling core is fitted into the core coupling hole. A first inclined surface is formed in the second die surface, and a second inclined surface having a shape that fits the first inclined surface is formed on the surface of the second die.

Preferably, the front panel manufacturing apparatus further includes a removal roll which is located near the output end of the alignment member and winds the base sheet.

Preferably, the guide hole is formed to be narrower as the depth is deeper, the guide pin is formed to be tapered toward the free end.

Preferably, the core receiving portion is formed to be narrower as the depth deeper, the coupling core is formed to be tapered toward the free end.

Preferably, the second die may be pressed by injecting a transparent resin to the surface of the panel region in a state in which the second die is coupled to the first die.

Preferably, the front panel manufacturing apparatus further includes a removal roll which is located near the output end of the alignment member and winds the base sheet, wherein the soft film and the waste region are wound and removed by the removal roll.

Preferably, the conveying member grips the panel region portion using underpressure.

In order to achieve the above object, the front panel of the display device according to a preferred embodiment of the present invention is manufactured by the front panel manufacturing apparatus.

An apparatus for manufacturing a front panel of a display apparatus according to a preferred embodiment of the present invention and a front panel of the display apparatus manufactured therefrom have the following effects.

First, it is possible to provide a front panel manufacturing apparatus of a display apparatus capable of precisely aligning a film and a die, and a front panel of the display apparatus manufactured thereby.

Second, it is possible to provide a front panel manufacturing apparatus of a display device suitable for continuous production in large quantities and a front panel of the display device manufactured thereby.

Third, it is possible to provide a front panel manufacturing apparatus of a display device suitable for using a high hardness material and a front panel of the display device manufactured thereby.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given above, serve to further the understanding of the technical idea of the invention, And should not be construed as interpretation.
1 is an eyemark printed soft film according to the prior art used to continuously manufacture a front panel of a display device.
2 is a conceptual diagram illustrating a state in which a soft film and a die are displaced during a process of continuously manufacturing a front panel of a display device.
3 is a conceptual diagram of a front panel manufacturing apparatus of a display device according to a first embodiment of the present invention.
4 is an enlarged perspective view of a part of a front panel manufacturing apparatus of the display device shown in FIG. 3.
5A through 5C are views illustrating a process of aligning a die with a base sheet by a front panel manufacturing apparatus of the display apparatus shown in FIG. 3.
6 is a conceptual diagram of a front panel manufacturing apparatus of a display device according to a second embodiment of the present invention.
7A to 7C are diagrams illustrating a process of aligning a die with a base sheet by a front panel manufacturing apparatus of the display apparatus illustrated in FIG. 6.

Hereinafter, a front panel manufacturing apparatus of a display apparatus and a front panel of a display apparatus manufactured by the same will be described in detail with reference to the accompanying drawings.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

In the drawings, the size of each component or a specific portion constituting the components is exaggerated, omitted, or schematically illustrated for convenience and clarity of description. Therefore, the size of each component does not entirely reflect the actual size. In the following description, it is to be understood that the detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

3 is a conceptual diagram of a front panel manufacturing apparatus of a display apparatus according to a first embodiment of the present invention, FIG. 4 is an enlarged perspective view of a part of the front panel manufacturing apparatus of the display apparatus illustrated in FIG. 3, and FIG. 5C are views illustrating a process of aligning the base sheet and the die by the front panel manufacturing apparatus of the display apparatus illustrated in FIG. 3. 3 illustrates a state in which the second die 39 is spaced apart from the first die 33 after the transparent resin layer 18 is formed on the base sheet 10.

3 to 5, a front panel manufacturing apparatus (hereinafter, referred to as a 'manufacturing apparatus') according to a first embodiment includes a base sheet 10 and a supply roll on which the base sheet 10 is wound ( 20, a die assembly 30 to which the base sheet 10 released from the feed roll 20 is supplied, and a removal roll wound around the output end of the die assembly 30 and wound around the base sheet 10 ( 40).

The base sheet 10 is composed of a soft film having an adhesive face and a flexible hard sheet 14 attached to the adhesive face of the soft film, and the through holes 16 are formed at regular intervals along the longitudinal direction.

The flexible hard sheet 14 has a strength of 8H to 9H close to glass and, unlike glass, preferably has elasticity enough to be wound on the feed roll 20. In order to enable a continuous process, the flexible hard sheet 14 is attached to a flexible film having an adhesive surface, and only the thickness of the flexible hard sheet 14 depends on the shape of the front panel to be finally manufactured. It is necessary to cut). The region thus cut out of the flexible hard sheet 14 is called a panel region portion 14a, and the remaining region except for the panel region portion 14a is called a waste region portion 14b. This waste area portion 14b is discarded without being used to form the front panel. The panel region 14a is used to form the front panel of the display device, and an ink layer may be applied to the surface opposite to the surface of the soft film. On the other hand, when cutting the flexible hard sheet 14, it is preferable to cut using a laser to prevent the occurrence of minute cracks at the edge of the panel region 14a.

The die assembly 30 has a first die 33 that is secured to the frame 1 and a second die 39 that can be approached or away from the first die 33.

The first die 33 has a suction pipe 32, which is formed inside the first die 33 so that one end of the first die 33 faces the second die 39. It is open at the surface and the other end of the suction pipe 32 is connected to the negative pressure pump 32a. The base sheet 10 can be brought into close contact with the surface of the first die 33 by the negative pressure generated by the negative pressure pump 32a and applied to the suction pipe 32.

The second die 39 includes a sheet fixing part 34 and a pressing die part 37.

Here, the sheet fixing part 34 may have an opening in the center, may approach or move away from the first die 33, and the base sheet 10 may be fixed to the first die 33 by being in close contact with the first die 33. A sealing member 36 made of elastic rubber or a polymer material is formed on the surface of the sheet fixing part 34 which is in contact with the first die 33. The seat fixing portion 34 and the first die 33 are connected by a bar-shaped cylinder mechanism, and the seat fixing portion 34 moves away from or approaches the first die 33 according to the expansion and contraction of the cylinder mechanism. Although shown as being capable of construction, this is merely exemplary, and of course, various types of movable mechanisms may be used.

The pressing die portion 37 may be inserted into an opening formed in the sheet fixing portion 34 and may approach or move away from the first die 33. An injection tube 38 is formed in the press die portion 37, and the transparent resin is injected into the opening of the sheet fixing part 34 through the injection tube 38, and the base sheet 10 is covered with the transparent resin. The press die portion 37 presses the base sheet 10 in the state where it is.

The pressing die portion 37 has a shape corresponding to the opening of the sheet fixing portion 34, and the pressing die portion 37 and the sheet when the pressing die portion 37 is inserted into the opening of the sheet fixing portion 34. It is preferable to form the pressing die portion 37 and the sheet fixing portion 34 in a size such that transparent resin does not leak out between the fixing portions 34.

In order to form the transparent resin layer 18 on the base sheet 10, first, the base sheet 10 is supplied to the die assembly 30 so as to align both, and the sheet fixing part 34 is disposed in the first die ( The base sheet 10 is fixed in close contact with 33), and the pressing die portion 37 is inserted into the opening of the sheet fixing portion 34 to inject the transparent resin, and then pressurizes it. In order to implement such a manufacturing method, it is necessary to align the base sheet 10 and the die assembly 30 precisely. In the manufacturing apparatus according to the present invention, as compared with the conventional use of the eye mark 3 and the sensor, The sorting method is used, and this new sorting method will be described below.

First, the base sheet 10 is supplied to the die assembly 30, but it is not necessary to accurately align the base sheet 10 in the state having a predetermined error, the first die 33 and the sheet fixing portion 34 It is good to be located in between. To this end, as in the prior art, the eye mark 3 and the sensor may be used, and the feed roll 20 may be rotated by a predetermined angle to supply the base sheet 10 to the die assembly 30 by a predetermined length each time. Of course, the base sheet 10 supplied to the die assembly 30 in this manner is not yet aligned, and the guide hole 31 and the guide pin 35 are used for alignment as follows.

A recessed guide hole 31 is formed in a surface of the first die 33 corresponding to the second die 39, and a guide hole 31 is formed in a surface of the second die 39 corresponding to the first die 33. Guide pins 35 fitted to the 31 are formed. The guide pin 35 is more precisely formed on a surface of the seat fixing part 34 corresponding to the first die 33.

Referring to FIG. 5, an exemplary embodiment is illustrated in which the guide pin 35 has a shape similar to a cone, and the guide hole 31 has a shape of a recess fitted to fit the cone. The hole 31 is formed to be narrower as the depth is deeper, and the guide pin 35 may be formed to be tapered toward the free end.

Referring to FIG. 5A, the base sheet 10 is supplied to the first die 33, but the through hole 16 is not exactly aligned with the guide hole 31, and the guide pin 35 is provided. The state not yet inserted into the through hole 16 is shown. According to the prior art, the base sheet 10 and the first die 33 cannot be aligned with more precision than that shown in FIG. 5 (a), but according to the present invention, accurate alignment is possible as will be described later.

Referring to FIG. 5B, a state in which the sheet fixing part 34 having the guide pin 35 is fitted into the through hole 16 is illustrated. Once the pointed end of the guide pin 35 is inserted into the through hole 16, the outer surface of the guide pin 35 is inserted into the through hole 16 as the guide pin 35 is inserted toward the guide hole 31. When the guide pin 35 is further inserted in this state, the base sheet 10 is moved in parallel with the surface of the first die 33.

Referring to FIG. 5C, the guide pin 35 is fully inserted into the guide hole 31. The through hole 16 formed in the base sheet 10 gradually moves with the guide hole 31 while the outer surface of the guide pin 35 is fitted into the guide hole 31 by riding the inner surface of the through hole 16. When the guide pin 35 is positioned close to the image, and the guide pin 35 is completely inserted into the guide hole 31, the guide pin 35, the through hole 16, and the guide hole 31 are all located concentrically.

As such, while the second die 39 approaches the first die 33, the free end of the guide pin 35 passes through the through hole 16, and the guide pin 35 then moves through the guide hole 31. The base sheet 10 and the die assembly 30 can be accurately aligned by being fitted into and coupled to the base sheet 10.

After the alignment of the base sheet 10 and the die assembly 30 is completed, the transparent resin is injected onto the base sheet 10 through the opening of the sheet fixing part 34 and pressed to form a transparent resin layer on the base sheet 10 ( After forming 18, the sheet fixing part 34 and the pressing die part 37 are spaced apart from the first die 33. In this state, the base sheet 10 is wound by the removal roll 40. In detail, the panel region 14a on which the transparent resin layer 18 is formed is not wound by the removal roll 40. Only the soft film and the waste region 14b are wound up by the removal roll 40 to be removed.

6 is a conceptual diagram of a front panel manufacturing apparatus of a display apparatus according to a second embodiment of the present invention, Figure 7 (a) to Figure 7 (c) is a base by the front panel manufacturing apparatus of the display device shown in FIG. A diagram showing a process of aligning a sheet and a die.

In the first embodiment, the guide assembly 31 and the guide pin 35 are formed in the die assembly 30. In the second embodiment, the alignment member 50 provided separately from the die assembly 30 is guided. There is a difference between the hole 51 and the guide pin 55.

In addition, the second embodiment has a conveying member 60 for holding and conveying the panel region portion 14a to the die assembly 30. Unlike the first embodiment, the die assembly 30 has a coupling core 33a. There is a difference that the core accommodating portion 39a is formed.

In the following description, in order to avoid redundant description, the descriptions common to the first embodiment will be omitted or briefly described, and the second embodiment will be described mainly on the point of difference from the first embodiment.

6 and 7, the manufacturing apparatus according to the second embodiment is for aligning the base sheet 10, the supply roll 20 on which the base sheet 10 is wound, and the base sheet 10. A die assembly having an alignment member 50, a removal roll 40 wound around the output end of the alignment member 50, which winds up the base sheet 10, and a first die 33 and a second die 39. 30 and a transfer member 60 for transferring the panel region portion 14a from the vicinity of the output end of the alignment member 50 to the first die 33.

The alignment member 50 approaches the first alignment portion 53 fixed to the frame 1 and the first alignment portion 53 to align the base sheet 10 released from the feed roll 20. It has a second alignment portion 59 that can be moved away. The first alignment portion 53 and the second alignment portion 59 are connected by a bar-shaped cylinder mechanism, and according to the expansion and contraction of the cylinder mechanism, the second alignment portion 59 is the first alignment portion 53. Although shown as a structure that can be moved away from or accessible, this is merely exemplary, in addition to a variety of movable mechanisms can be used as a matter of course.

The recessed guide hole 51 is formed in a surface of the first alignment unit 53 facing the second alignment unit 59, and the first alignment unit 53 of the second alignment unit 59 faces the surface thereof. The guide pin 55 is inserted into the guide hole 51 is formed. Although the guide hole 51 and the guide pin 55 are formed in the alignment member 50 unlike the first embodiment, the free end of the guide pin 55 passes through the through hole 16 and is guide pin. The principle that the base sheet 10 and the alignment member 50 are aligned by fitting the 55 into the guide hole 51 is the same as that of the first embodiment. Referring to FIG. 5, those skilled in the art will clearly understand the principle. Will understand. Contrary to that illustrated in FIG. 6, the guide hole 51 may be formed in the second alignment unit 59, and the guide pin 55 may be formed in the first alignment unit 53.

When the alignment of the base sheet 10 and the alignment unit is completed, the first alignment unit 53 and the second alignment unit 59 are spaced apart from each other, and the base sheet 10 is removed near the output end of the alignment member 50. It is wound by the roll 40. In more detail, the panel region part 14a is not wound by the removal roll 40, and only the soft film and the waste region part 14b are wound up by the removal roll 40 and removed.

The conveyance member 60 grasps the panel area | region part 14a using negative pressure from the output terminal vicinity of the removal roll 40, and conveys it to the 1st die 33 mentioned later.

The die assembly 30 may approach or move away from the first die 33 having the suction pipe 32 and the first die 33 so as to bring the panel region portion 14a into close contact with the surface. A second die 39 capable of injecting and pressing the transparent resin onto the surface of the panel region portion 14a in a state of being engaged with the first die 33 is provided.

A coupling core 33a is formed on a surface of the first die 33 that corresponds to the second die 39, and a coupling core 33a is formed on a surface of the second die 39 that corresponds to the first die 33. The core accommodating part 39a which accommodates this is formed. In addition, the core accommodating portion 39a is formed to be narrower as the depth is deeper, and the coupling core 33a is formed to be thinner toward the free end.

On the other hand, the panel region portion 14a has a core engaging hole 14c having a shape corresponding to the engaging core 33a. The free accommodating end of the engaging core 33a is fitted into the core engaging hole 14c. By completing the coupling to 39a, the panel region portion 14a can be accurately aligned between the first die 33 and the second die 39. Alignment of the panel region 14a and the die assembly 30 will be described in more detail below with reference to FIG. 7.

Referring to FIG. 7A, the panel region portion 14a is transferred to the first die 33 by the transfer member 60 such that the core engagement hole 14c is located at a position corresponding to the engagement core 33a. Is shown. Here, the core coupling hole 14c is in a position corresponding to the coupling core 33a, which means that the proximal end of the coupling core 33a is in a position where the core coupling hole 14c can be fitted into the core coupling hole 14c. That is, although the panel region portion 14a is transferred to the first die 33, the core coupling hole 14c is not exactly aligned with the coupling core 33a, and the coupling core 33a is still the core coupling hole ( 14c) is not fitted.

Referring to FIG. 7B, the coupling core 33a is inserted into the core coupling hole 14c to align the panel region 14a and the die assembly 30. In the state where the pointed end of the coupling core 33a is once inserted into the core coupling hole 14c, even if both are not aligned exactly with each other, a negative pressure greater than the negative pressure used by the transfer member 60 causes a negative pressure to be applied to the suction pipe 32. When applied, the panel region portion 14a is sucked in and fixed to the first die 33 as the inner surface of the core engaging hole 14c rides on the outer surface of the engaging core 33a. The edge of the panel region portion 14a so that the panel region portion 14a can be smoothly aligned without being caught by the first die 33 during the alignment process where the coupling core 33a is fitted into the core coupling hole 14c. The first inclined surface 33b is formed on the surface of the first die 33 corresponding to the portion, and the second inclined surface 39b has a shape that fits the first inclined surface 33b on the surface of the second die 39. It is preferable that this be formed.

Referring to FIG. 7C, after the transfer member 60 is separated from the space between the first die 33 and the second die 39, the second die 39 faces toward the first die 33. As shown, the die assembly 30 is fully engaged. Transparent resin is inject | poured through the injection pipe 38, and the transparent resin layer 18 is formed on the panel area | region part 14a.

Thereafter, when the second die 39 is spaced apart from the first die 33, the front panel is completed, and the front panel is separated from the die assembly 30 by hand or by using a separate front panel separation mechanism.

When the front panel is manufactured by the manufacturing apparatus of the second embodiment, a front panel having a core coupling hole 14c is manufactured. In general, a hole for a speaker is formed at the top of a front panel of a mobile phone, a smartphone, and the like. Since the hole in which the button portion is located is formed, the second embodiment can be used efficiently in manufacturing the front panel used for such a display device.

According to the manufacturing apparatus according to the present invention described so far, the base sheet 10 and the die assembly 30 can be precisely aligned as compared with the prior art, so that the transparent resin layer ( 18) there is an advantage that can be formed.

In addition, it is possible to mass-produce the front panel using a flexible hard sheet 14, which is typically a material which is not suitable for manufacturing the front panel in a mass continuous production method.

On the other hand, when the front panel is formed using a glass substrate, the strength is high, but in order to form a curved front panel, the glass substrate must be scraped along the curved surface, and a protrusion or a depression cannot be formed on the front panel. However, in the manufacturing apparatus according to the present invention, the die assembly 30 may be formed into a curved surface, or the protrusion may be formed on the front panel by using the first die 33 or the second die 39 having depressions or protrusions. There is an advantage that can form a depression with.

Thus, according to the present invention, it is possible to manufacture a front panel having a strength of 8H ~ 9H close to the glass, it is possible to apply a mass continuous production method to the production of such a front panel, and at the same time the shape of the front panel is free, Production costs can also be lowered.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not to be limited to the details thereof and that various changes and modifications will be apparent to those skilled in the art. And various modifications and variations are possible within the scope of the appended claims.

1 frame 2, 12 soft film
3: eye mark 5: lower die
6: upper die 10: base sheet
14: flexible hard sheet 14a: panel region portion
14b: waste region 14c: core coupling hole
16 through-hole 18 transparent resin layer
20: supply roll 30: die assembly
31, 51: guide hole 32: suction pipe
32a: negative pressure pump 33: first die
33a: coupling core 33b: first inclined surface
34: seat fixing part 35, 55: guide pin
36: sealing member 37: pressing die portion
38: injection tube 39: the second die
39a: core accommodating part 39b: 2nd inclined surface
40: removal roll 50: alignment member
53: first alignment portion 59: second alignment portion
60 transfer member

Claims (15)

A base sheet comprising a soft film having an adhesive face and a flexible hard sheet attached to the adhesive face of the soft film, and having through holes formed at regular intervals along a length direction;
A feed roll on which the base sheet is wound; And
And a die assembly having a first die and a second die that can be approached or away from the first die,
The base sheet is supplied from the feed roll to the die assembly,
A recessed guide hole is formed in a surface of the first die that corresponds to the second die,
Guide pins that are inserted into the guide holes are formed on a surface of the second die that corresponds to the first die,
As the second die approaches the first die, the free end of the guide pin passes through the through hole, and then the base sheet and the die assembly are engaged by fitting the guide pin into the guide hole. Aligned,
The second die,
A sheet fixing part having an opening at a center thereof, and capable of approaching or moving away toward the first die and fixing the base sheet in close contact with the first die; And
And a press die portion inserted into an opening formed in the sheet fixing portion, approaching or moving away toward the first die, and pressing the base sheet by injecting a transparent resin through the opening. Front panel manufacturing apparatus characterized in that. The method of claim 1,
The guide hole is formed to be narrower as the depth deeper, the guide pin is a front panel manufacturing apparatus characterized in that it is formed to become thinner toward the free end. delete The method of claim 1,
The guide pin is a front panel manufacturing apparatus, characterized in that formed on the surface corresponding to the first die of the seat fixing portion. The method of claim 1,
And the first die has a suction pipe, and the base sheet is in close contact with the first die with a negative pressure applied to the suction pipe. The method of claim 1,
A removal roll wound around the base sheet and positioned near the output end of the die assembly;
The flexible hard sheet is divided into a panel region portion cut according to the thickness of the flexible rigid sheet according to the shape of the front panel of the display device, and a waste region portion other than the panel region portion.
And said soft film and said waste region are wound around said removal roll and removed. A base sheet formed of a flexible film having an adhesive surface, and a flexible hard sheet attached to the adhesive surface of the soft film and divided into a panel region portion and a waste region portion, and having through holes formed at regular intervals along the longitudinal direction;
A feed roll on which the base sheet is wound;
An alignment member having a first alignment portion and a second alignment portion that can approach or move away from the first alignment portion to align the base sheet released from the feed roll;
A die assembly having a first die and a second die that can be approached or away from the first die; And
And a conveying member for conveying the panel region portion from the vicinity of the output end of the alignment member to the first die.
One of the first alignment portion and the second alignment portion is formed with a recessed guide hole, the other is formed with a guide pin to be fitted to the guide hole,
The first die has a suction pipe, and a coupling core is formed on a surface of the first die that corresponds to the second die, and a core that receives the coupling core on a surface of the second die that corresponds to the first die. A receptacle is formed,
As the second alignment portion approaches the first alignment portion, the free end of the guide pin passes through the through hole, and then the base sheet and the alignment member are coupled by being fitted into the guide hole. Aligned,
The panel region has a core coupling hole of a shape corresponding to the coupling core,
The conveying member conveys the panel region so that the core engaging hole is in a position corresponding to the engaging core,
A negative pressure is applied to the suction pipe, and the panel region portion and the die assembly are aligned by fitting the coupling core into the core coupling hole. The method of claim 7, wherein
A first surface is formed on the surface of the first die corresponding to the edge portion of the panel region so that the panel region can be smoothly aligned without being caught by the first die during the alignment process while the coupling core is fitted into the core coupling hole. A slope is formed,
The front panel manufacturing apparatus, characterized in that the second inclined surface having a shape that fits the first inclined surface on the surface of the second die. The method of claim 7, wherein
Located near the output end of the alignment member and the front panel manufacturing apparatus characterized in that it further comprises a removal roll for winding the base sheet. The method of claim 7, wherein
The guide hole is formed to be narrower as the depth deeper, the guide pin is a front panel manufacturing apparatus characterized in that it is formed to become thinner toward the free end. The method of claim 7, wherein
The core accommodating part is formed to be narrower as the depth deeper, the coupling core is formed to be thinner toward the free end. The method of claim 7, wherein
The second die is a front panel manufacturing apparatus, characterized in that the injecting a transparent resin to the surface of the panel region portion in the state coupled with the first die. The method of claim 7, wherein
Located near the output end of the alignment member and further provided with a removal roll for winding the base sheet,
And said soft film and said waste region are wound around said removal roll and removed. The method of claim 7, wherein
The transfer member is a front panel manufacturing apparatus, characterized in that for holding the panel area portion using a negative pressure. delete

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