KR101312094B1 - Uv curing apparatus using uv led - Google Patents

Abstract

PURPOSE: A UV curing apparatus using a UV LED is provided to prevent an interruption to a UV beam by eccentrically arranging a UV light source. CONSTITUTION: A UV LED module (10) includes a module housing (11), a UV LED (13), and a lens (14). The module housing has a front aperture that is eccentric to a central line. The UV LEDs are lined up in a row in the module housing. The lens covers the front aperture. The lens is eccentric to the central line.

Description

ＵＶ UV curing device using LED {UV CURING APPARATUS USING UV LED}

The present invention relates to a UV curing apparatus using a UV LED, and more particularly, to a UV curing apparatus capable of effectively curing the edge-side UV resin of the window, panel or glass to be bonded when manufacturing the window or panel assembly. .

In order to fabricate a window or LCD assembly of a mobile phone, it is required to attach a window, glass, or panel (hereinafter referred to as a 'panel'). In addition, in such bonding, a step of curing the UV resin used as the adhesive material with UV light is required. In addition, the curing of the UV resin requires a pre curing process in addition to the present curing process. For example, in manufacturing a mobile phone window assembly, both glass panels are bonded to the applied resin while applying the UV resin. At this time, a temporary curing process is used to form a dam that prevents the overflow of the UV resin. By using the curing process of the UV resin, it is possible to prevent the UV resin from overflowing while fixing the edges of the panels to be bonded.

As a conventional UV curing apparatus, linear UV LED modules are arranged in a quadrangle to emit a UV beam in a quadrangle corresponding to an edge of the quadrangle panel. 1 is a view for explaining a conventional UV curing apparatus and Figure 2 shows a UV light reflection pattern obtained in the conventional UV curing apparatus shown in FIG. In the conventional UV curing apparatus, as shown in FIG. 1, the plurality of linear UV LED modules 2 are arranged to form a rectangle. Each of the linear UV LED modules 2 is arranged to coincide with the center line C. FIG. It emits a linear UV beam through a linear UV light source 20 at the center of the width, thereby producing a square pattern of UV beams B ′ suitable for curing the square edge UV resin of the square panel, as shown in FIG. 2. I can make it. The linear UV light source includes linearly arranged UV LEDs and a linear lens disposed thereon. In using the conventional UV curing apparatus as described above, as shown in Figure 2, there is a problem that the shortage of the UV beam or the UV beam does not reach the corner of the four corners of the square. As a result, since curing of the UV resin is delayed near the corners of the rectangular panel, the phenomenon of overflowing the UV resin may occur. This results in defects such as staining of the panel product, overflow, resin not applied, and the like.

Republic of Korea Patent Registration No. 10-0245461 (Registration Date: November 29, 1999) Republic of Korea Patent Registration No. 10-0726740 (Registration Date: 2007. 06.04) Republic of Korea Patent Publication No. 10-2012-0119503 (Published: October 31, 2012)

One problem to be solved by the present invention is a UV curing apparatus that can eliminate the shortage or unreaching of the UV beam generated in the vicinity of the intersection of the UV beam through the eccentric arrangement of the UV light source including the UV LEDs and the lens To provide.

UV curing apparatus according to an aspect of the present invention, includes a plurality of UV LED modules arranged in a square corresponding to the edge of the panel bonded by the resin. The UV LED modules include a linear module housing having a linear front opening half-width by a center line and eccentric to one side with respect to the center line; A plurality of UV LEDs arranged linearly in the module housing; It is installed to cover the front opening, and includes a linear lens eccentrically positioned with respect to the center line. The plurality of UV LEDs may be eccentrically positioned with respect to the center line to correspond to the lens.

According to one embodiment, the front opening, the UV LEDs, and the lens are located eccentrically toward the inside of the rectangle.

According to one embodiment, the plurality of UV LEDs are arranged long on the PCB, closer to one edge of the PCB than the other edge of the PCB.

According to one embodiment, the lens is preferably a cylindrical lens for linearly condensing UV light from the UV LEDs.

According to an embodiment, a plurality of UV LED modules are included on one side of the quadrangle, and two neighboring LED modules in the one side are in contact with ends of the lens.

According to an embodiment, the UV curing apparatus may further include a controller for individually driving the plurality of UV LED modules. Furthermore, the plurality of UV LEDs included in each of the UV LED modules may be driven individually by the controller.

According to one embodiment, the plurality of UV LEDs include a first UV LED and a second UV LED having a different wavelength, and according to the type of UV resin, the first UV LED or the second UV LED is optional Lights up.

According to another aspect of the invention, a linear module housing having a linear front opening half-width by a center line and eccentric to one side with respect to the center line; A plurality of UV LEDs arranged linearly in the module housing and eccentrically positioned with respect to the center line; The UV LED module is provided to cover the front opening, and includes a linear lens positioned eccentrically to one side with respect to the center line.

According to the present invention, a UV curing apparatus capable of eliminating the shortage or unreaching phenomenon of the UV beam generated near the corner where the UV beam intersects through an eccentric arrangement of the UV light source including the UV LEDs and the lens is realized.

1 and 2 are views for explaining the prior art.
(A), (b) and (c) of FIG. 2 are diagrams for explaining the change of the UV light irradiation pattern through the individual driving of the module unit of the UV curing apparatus shown in FIG.
3 is a view showing the arrangement of the UV LED modules eccentric UV light source in the UV curing apparatus according to an embodiment of the present invention.
FIG. 4 is a view schematically showing a pattern of the square UV beam B which can be obtained by the configuration of the UV curing apparatus 1 shown in FIG. 3.
FIG. 5 is a photograph of corners of a rectangular UV beam that can be actually obtained through an eccentric arrangement of UV light sources in the UV LED module.
Figure 6 is a perspective view of the eccentric UV LED module of the UV curing apparatus according to an embodiment of the present invention.
FIG. 7 is a plan view illustrating the eccentric UV LED module illustrated in FIG. 6.
8 is a cross-sectional view illustrating the eccentric UV LED module taken along II in FIG. 7.
FIG. 9 is a plan view illustrating a UV curing apparatus implemented using the UV LED module 10 illustrated in FIGS. 6 to 8.
10 is a plan view illustrating a state in which UV LED modules are arranged in a row with adjacent ends.
11 and 12 are views for explaining a plurality of UV LED modules disposed in contact with the end and the selective driving method of the UV LED in the UV LED module.
13a to 13d are photographs for comparing the conventional UV LED module before the eccentricity and the UV LED module according to the present embodiment after the eccentricity.
14 is a view showing the results of testing the UV light emission characteristics using the UV LED module of the conventional and the present embodiment shown in Figure 13a to Figure 13d.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are provided as examples to sufficiently convey the spirit of the present invention to those skilled in the art. Therefore, the present invention is not limited to the embodiments described below and may be embodied in other forms. In the drawings, the width, length, thickness, and the like of the components may be exaggerated for convenience.

3 is a view showing the arrangement of the UV LED modules eccentric UV light source in the UV curing apparatus according to an embodiment of the present invention. Referring to FIG. 3, there is shown a UV curing apparatus 1 including UV LED modules 10 arranged in a square to correspond to four corners of a rectangular panel (not shown) where the bonding is performed. The UV curing device 1 has the form of a square, each side of the square comprising one or more UV LED modules 10. In the figure, it is shown that only one UV LED module 10 exists on each side. However, it is noted that two or more UV LED modules 10 may be joined to each other to form one side of a rectangle.

The UV LED module 10 includes a linear UV light source U, the UV light source U including a plurality of linearly arranged UV LEDs and a linear lens disposed to cover the plurality of UV LEDs. . The UV LED module 10 has a center line (C) and the UV light source (U) is located eccentrically inward with respect to the center line (C). The UV light source U is inwardly eccentric with respect to the centerline C, so that the maximum between the UV light sources U and U intersecting at each of the four corners of the square, as compared with the coincidence of the center line and the UV light source U Can be approached.

FIG. 4 is a view schematically showing a pattern of a square UV beam B which may be obtained by the configuration of the UV curing apparatus 1 shown in FIG. 3, and FIGS. 5A and 5B are views of the UV light source in the UV LED module. These are shots of the corners of the square UV beam that are actually obtained by the eccentric arrangement. 4 and 5, the phenomenon of the prior art in which the amount of light of the UV beam B is insufficient or not reached at four corner portions of the quadrangle is eliminated. Accordingly, the UV curing apparatus 1 can produce a UV beam of a square pattern that is almost uneven at the corner and the light quantity of the UV beam is almost uniform.

6 is a perspective view showing an eccentric UV LED module of the UV curing apparatus according to an embodiment of the present invention, Figure 7 is a plan view showing the eccentric UV LED module shown in Figure 6, Figure 8 is Figure 7 Sectional view showing an eccentric UV LED module taken along II.

6 to 8, the UV LED module 10 has an elongated shape with an open front and a module housing 11 half-width by a center line C, and a long inside the module housing 11. The bar-shaped PCB 12 provided, the plurality of UV LEDs 13 which are linearly arranged on the PCB 12 along the longitudinal direction of the PCB 12, and the plurality of UV LEDs 13 And a cylindrical lens 14 extending in a direction coinciding with the arrangement direction. The linearly arranged UV LEDs 13 and the cylinder lens 14 provided correspondingly constitute the UV light source U (see FIG. 3).

In the case of the existing UV LED module using a light diffusion lens, the UV LED module 10 according to the present embodiment is in contrast to the curing performance of the UV resin at the edge of the panel when the panel is bonded, causing overflow of the UV resin. By adopting a cylinder lens 14 that can collect and send UV light linearly along the edge of the panel at the top of the panel, effective UV resin can be cured and UV overflow can be prevented. The module housing 11 includes a linear opening 112 at the front, through which the linear UV light collected by the cylinder lens 14 is emitted. In addition, the rear portion of the UV LED module 10 is provided with a heat dissipation outlet (not shown) as part of the means for dissipating heat generated during the operation of the UV LEDs (13). In the present specification, the front of the UV LED module refers to the direction in which the UV light is emitted and the rear of the UV LED module is defined as the direction opposite to the front of the LED module.

With respect to the center line C half of the width of the UV LED module 10, the UV LEDs 13 and the cylinder lens 14 constituting the UV light source are eccentric to one side. In addition, it is eccentric to one side with respect to the center line C of the linear opening 112 which sends out the UV beam B passing through the cylinder lens 14 to the outside. Also with respect to the PCB 12, the UV LED module 10 is preferably located eccentrically. That is, the UV LED module 10 is not arranged along the center of the PCB 12 is eccentric closer to one edge of the PCB 12.

FIG. 9 is a plan view illustrating a UV curing apparatus 1 implemented using the UV LED module 10 illustrated in FIGS. 6 to 8. Referring to FIG. 9, UV LED modules 10 are arranged to form sides of a rectangle. At this time, in the UV curing apparatus 1, the UV LEDs 13, the cylinder lens 14, and the linear opening 112 are all eccentric with respect to the center line C, the eccentric The direction is towards the inside of the rectangle

A test was performed to compare the UV beam characteristics of the preeccentric or precorrection module (prior art) and the eccentric or postcorrection module (this example).

Table 1 below shows the purpose of the test and the measurement position of the UV beam.

13a to 13d are photographs showing the conventional UV LED module and the UV curing apparatus including the same before the eccentricity and the UV LED module and the UV curing apparatus including the same according to the present embodiment after the eccentricity. 13A to 13D, the eccentricity of the present embodiment and the reduction in the distance between lenses at the intersections can be seen.

14 and Table 2 below show the test results, and accordingly, when using the eccentric UV LED module, the UV beam width of the corner crossing portion is constant, and no empty space is found at the position where the UV beam crosses. It can be seen. The difference in the amount of light at the corner is 44 cm2, and the difference between the PCB and the LED is expected to be about 1.5 ~ 2 times. Compared to the previous one, the width of the UV LED module can be significantly reduced to 108mm, which can greatly suppress resin overflow at the edges when curing the sealant resin of the panel.

As shown in FIGS. 6-9, each UV LED module 10 may include a single UV LED 13 emitting UV beams of the same wavelength, but different UV LEDs emitting different wavelengths. The LED module 10 used may also be considered. When the plurality of UV LEDs 13 in the UV LED module 10 are composed of a first UV LED emitting UV light of a first wavelength and a second UV LED emitting UV light of a second wavelength, Each time the type is changed, the first UV LED or the second UV LED may be selectively lit. Although not shown, a single PCB in a UV LED module may be configured as a plurality of unit PCBs, and grouping and arranging UV LEDs of different wavelengths on the unit PCBs may be considered. In addition, although the wavelengths of the LEDs 13 may be changed at the package level, the wavelengths of the LEDs may be changed at the chip level, that is, the wavelengths of the LED chips included in the one LED package 13 may be changed. have.

As illustrated in FIG. 10, the UV LED modules 10 and 10 may be arranged to be adjacent to the ends. At this time, it is preferable that the cylinder lenses 14 and 14 of the two adjacent LED modules 10 are in contact with neighboring ends. The plurality of UV LED modules 10 and 10 are arranged to be adjacent to each other end.

By arranging the plurality of UV LED modules so that the ends abut each other and individually configuring the plurality of UV LED modules to be activatable, the UV curing apparatus can be applied to panels of various sizes. This will be described with reference to FIGS. 11 and 12 as follows.

11 and 12, a plurality of UV LED modules 10a, 10b, 10c, 10d and 10e; 10 are arranged in a line with the ends abutting the plurality of UV LED modules 10a, 10b, 10c, 10d, and 10e may be individually driven by a controller not shown. The selective individual drive of these UV LED modules 10a, 10b, 10c, 10d, 10e; 10 allows for the replacement of the UV curing device according to the size change of the panel by driving only one or more desired UV LED modules to fit the panel size. It can eliminate the hassle.

First, referring to FIG. 11A, in order to irradiate UV light B having a length corresponding to one side edge length of the panel, the UV curing apparatus 1 may include first, second, third, and the like. Only the fourth UV LED modules 10a, 10b, 10c, and 10d are lit, and the fifth UV LED module 10e is not lit. When applying a panel having one side length reduced to a length corresponding to approximately one UV LED module, that is, when applying a panel having a length shortened by approximately one word, and further, a curing of the UV resin is applied. As shown in 11 (b), only the first, second and third UV LED modules 10a, 10b, and 10c light up, and the fourth and fifth UV LED modules 10d and 10e do not light up. . If the length of one edge of the panel is approximately equal to the total length of the row of UV LED modules 10a, 10b, 10c, 10d and 10e, the entire row of UV LED modules, i.e., the first, second, third, The fourth and fifth UV LED modules 10a, 10b, 10c, 10d, and 10e are entirely lit.

As mentioned above, each of the UV LED modules 10 may include a plurality of UV LEDs arranged in a row, wherein a plurality of UV LEDs provided in the corresponding UV LED module 10 are individually driven by the controller described above. If possible, as shown in (a), (b) and (c) of FIG. 12, the linear UV light, which is more precisely adjusted according to the panel size, may be irradiated to one side edge of the panel. In this case, each of the UV LEDs may be a package level LED or a chip level LED.

More specifically, as shown in FIG. 12A, the first to fourth UVs among the first, second, third, fourth and fifth UV LED modules 10a, 10b, 10c, 10d, and 10e are shown. The LED modules 10a, 10b, 10c, and 10d are turned on, and the fifth UV LED module 10e is turned off, but the fourth UV LED module 10d has only some UV LEDs among the plurality of UV LEDs provided therein. Lights up. In addition, according to FIG. 12B, the first to third UV LED modules 10a among the first, second, third, fourth and fifth UV LED modules 10a, 10b, 10c, 10d, and 10e are shown. , 10b and 10c are turned on, and the fourth and fifth UV LED modules 10d and 10e are turned off, but only some of the UV LEDs of the third UV LED module 10c are turned on. do. In addition, according to FIG. 12C, all of the first, second, third, fourth, and fifth UV LED modules 10a, 10b, 10c, 10d, and 10e are turned on, but the fifth UV LED module ( 10e) only some of the UV LEDs of the self-equipped UV LEDs are turned on.

10, 10a, 10b, 10c, 10d, 10e: LED module
11: module housing 12: PCB
13: UV LED 14: cylinder lens

Claims (10)

Including a plurality of UV LED modules are arranged in a square corresponding to the edge of the panel bonded by the UV resin, the UV LED modules,
A linear module housing half the width by a center line and having a linear front opening eccentric to one side with respect to the center line;
A plurality of uv LEDs arranged linearly in the module housing; And
And a linear lens installed to cover the front opening and positioned eccentrically to one side with respect to the center line. The method of claim 1, wherein the plurality of UV LEDs are eccentrically positioned with respect to the center line to correspond to the lens, and the front opening, the UV LEDs, and the lens are located eccentrically toward the inside of the rectangle. UV curing device characterized in that. The UV curing apparatus according to claim 2, wherein the plurality of UV LEDs are arranged long on the PCB, and are located closer to one edge of the PCB than the other edge of the PCB. The UV curing apparatus of claim 1, wherein the lens is a cylindrical lens that linearly condenses and emits UV light from the UV LEDs. The UV curing apparatus of claim 1, wherein a plurality of UV LED modules are included on one side of the quadrangle, and two adjacent LED modules in the one side are in contact with ends of the lens. The UV curing apparatus of claim 5, further comprising a controller configured to individually drive the plurality of UV LED modules. The UV curing apparatus of claim 6, wherein a plurality of UV LEDs included in each of the UV LED modules are driven by the controller individually. The method of claim 1, wherein the plurality of UV LEDs include a first UV LED and a second UV LED having a different wavelength, and according to the type of UV resin, the first UV LED or the second UV LED is selectively UV curing apparatus characterized in that the light. A linear module housing half the width by a center line and having a linear front opening eccentric to one side with respect to the center line;
A plurality of UV LEDs arranged linearly in the module housing; And
UV LED module, characterized in that it is installed to cover the front opening, the linear lens which is located eccentrically to one side with respect to the center line. The UV LED module according to claim 9, wherein the plurality of UV LEDs are eccentrically positioned with respect to the center line to correspond to the lens.

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