KR20170014484A

KR20170014484A - Ultra Violet Light Source Module

Info

Publication number: KR20170014484A
Application number: KR1020150107943A
Authority: KR
Inventors: 김재조
Original assignee: 서울바이오시스 주식회사
Priority date: 2015-07-30
Filing date: 2015-07-30
Publication date: 2017-02-08

Abstract

The present invention relates to an ultraviolet light source module, and more particularly, to an ultraviolet light source module constituting a light source that emits uniform ultraviolet rays in a subject curing process using a UV LED.
The present invention relates to an ultraviolet light source module for a subject curing process, wherein the ultraviolet light source module includes at least two UV LEDs 20 mounted thereon, wherein the UV LEDs are mounted on a subject 30 relatively moving for a curing process, Is located in a position such that all of the points of the UV LED belong to the diffusing surface of one or two UV LEDs or fall within the diffusing surface of three or four UV LEDs.

Description

[0001] The present invention relates to an ultraviolet light source module,

The present invention relates to an ultraviolet light source module, and more particularly, to an ultraviolet light source module constituting a light source that emits uniform ultraviolet rays in a subject curing process using a UV LED.

Ultraviolet (UV) process units are used to manufacture various process targets by irradiating ultraviolet light to induce photochemical reactions of the targets. As devices become more highly integrated, there is a growing demand for micro-wiring and multi-layer wiring designs, which further increases the need to reduce the volume of interlevel layers to further reduce power consumption and increase device speed. And a low dielectric constant thin film material is usually used to reduce the volume of the intervening layer.

However, the use of a low dielectric constant material lowers the mechanical strength and, as a result, the low dielectric constant film is difficult to maintain the strength accepted in subsequent processes such as chemical mechanical polishing (CMP), wire bonding, and packaging. As a method for improving the above-mentioned problems, there has been used a method of curing a low-dielectric constant material through ultraviolet irradiation, thereby increasing the mechanical strength. Low-k materials exposed to ultraviolet light are shrunk and cured, resulting in an increase in mechanical strength.

Meanwhile, with the recent development of UV LED technology, UV LEDs are being replaced by ultraviolet lamps used in conventional subject curing processes. However, since UV LED chips are a kind of point light source, unlike conventional ultraviolet lamps, ultraviolet light intensity reaching the surface of a subject may be different from each other.

1, which shows the shape of a UV LED module that irradiates ultraviolet rays in a subject curing process and thus the difference in ultraviolet intensity between the subject's surface, the subject subject S is arranged such that the UV LED 20 is regularly mounted The substrate 11 is exposed to ultraviolet rays. However, since the arrangement of the UV LEDs 20 mounted on the substrate 11 is generally in the form of a square lattice as shown in FIG. 1 (c), the UV LED 20 is directly downward, The intensity of the ultraviolet light measured at the surface of the object located in the area becomes larger than the intensity of ultraviolet light measured at the surface of the object located in the area without the UV LED.

If there is a difference in the degree of curing of the subject due to the difference in the intensity of ultraviolet rays, there is a high possibility that a distorted phenomenon occurs in which a relatively weak portion is deformed earlier when an external force is applied to a microstructure, This adversely affects the subject yield.

In addition, since the conventional UV LED substrate 11 has a plurality of UV LEDs mounted integrally as shown in the figure, when some of the UV LEDs on the substrate have reached the end of their service life, the uniformity of ultraviolet irradiation is significantly reduced In order to prevent this, there is a problem that the substrate must be replaced without using other UV LEDs which have a long lifetime.

U.S. Patent No. 6,759,098 U.S. Patent No. 6,296,909

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a structure that can partially perform maintenance on UV LEDs while enhancing irradiation uniformity of ultraviolet rays, And an ultraviolet light source module which can increase the uniformity of irradiation with ultraviolet rays.

In order to solve the above problems, the present invention provides an ultraviolet light source module, wherein the ultraviolet light source module includes at least two UV LEDs 20 mounted thereon, 30 are located in the diffusing plane of one or two UV LEDs or are located in the diffusing plane of three or four UV LEDs.

The UV LED 20 may be a point light source having a circular diffusing surface.

The position of the UV LED 20 may be arranged at a vertex position of equilateral triangles arranged so that sides and vertices of the UV light 20 are mutually shared.

The ultraviolet module may include a substrate assembly 10 having a plurality of substrates 11 and 12 on which at least two UV LEDs 20 are mounted.

The present invention also relates to a subject ultraviolet light source module, wherein the ultraviolet light module includes a substrate assembly 10 having a plurality of substrates 11, 12 on which two or more UV LEDs 20 are mounted, The location of the positioned UV LED provides an ultraviolet light source module whose position is offset as the movement proceeds, when viewed in the direction of movement of the relatively moving subject 30. [

The plurality of substrates 11 and 12 may have the same shape.

The peripheries of the substrates 11 and 12 are generally rectangular and the periphery of the substrate 11 is in contact with the periphery of the adjacent substrate 12. The periphery of the substrate 11 is in contact with the periphery of the substrate 12, And the other substrate 12 may be formed with a depression 42 having a shape corresponding to the protrusion 41. [

The UV LEDs 20 mounted on the substrates 11 and 12 may be offset from each other.

A protrusion 41 is formed on the edge X of the substrate in the offset direction of the UV LED and a depression 42 is formed on the edge Y of the substrate in the direction opposite to the offset direction of the UV LED .

The protrusions 41 of the substrate 11 are sandwiched by the depressed portions 42 of the substrate against which the plurality of substrates 11 and 12 are aligned in the same direction, The projecting portion 41 of the substrate abutted on the depression 42 can be fitted.

A protrusion 41 is formed in a region A corresponding to the position where the UV LED 20 is mounted on the rim of the substrate which abuts against each other and a region B corresponding to the position where the UV LEDs 20 are mounted, And the shape of the protruding portion 41 and the depressed portion 42 may be a shape that can be fitted to each other.

The UV LED 20 disposed between neighboring substrates in a state in which the substrates 12 are rotated while being rotated by 180 degrees are brought into contact with the object 30 moving relatively for the curing process, The position can be shifted from each other as the movement progresses.

The projecting portion 41 of the substrate 11 can be fitted into the depression 42 of the substrate to which the substrate 11 is abutted and the projection 41 of the substrate abutted on the depression 42 of the substrate 11 can be fitted.

The protrusions 41 and the depressions 42 are formed at one end and the other end of a rim portion abutting the adjacent substrate, respectively. The protrusions 41 are relatively close to the UV LED 20 at both ends And the depression 42 may be formed at the other end N that is farther from the UV LED 20 than the other end.

The substrates 11 and 12 may be removably coupled to the substrate assembly 10.

The present invention also relates to a subject ultraviolet light source module, wherein the ultraviolet light module comprises a substrate (11, 12) on which two or more UV LEDs (20) are mounted; And a second frame body (52) for rotatably supporting the other ends of the substrates, a first frame body (51) rotatably supporting one ends of the substrates in a state where a plurality of the substrates are arranged apart from each other, The first frame 51 and the second frame 52 are relatively displaced when viewed in the moving direction of the relatively moving subject 30 for the curing process Thereby reducing the interval between the UV LEDs located on the substrates.

The positions of the UV LEDs 20 mounted on the two different substrates 11 and 12 in a state where the plurality of substrates are arranged side by side are aligned in the moving direction of the subject 30 relatively moving for the curing process When viewed, the positions can be shifted from each other.

Each of the substrates may be detachably coupled to the frame body.

A third frame body 53 is provided in a direction opposite to a direction in which the first frame body 51 is positioned with respect to the second frame body 52 and a plurality of substrates 11 And 12 are rotatably supported by the second frame body and the third frame body, respectively.

According to the present invention, in using a UV LED ultraviolet module comprising a point light source, it is possible to uniformly control the intensity of ultraviolet rays reaching a surface of an object without using an optical device or a diffusion plate structure for diffusing ultraviolet rays emitted from the UV LED It is economical and very efficient. By omitting the optic or diffusion plate structure, the intensity of the ultraviolet rays irradiated to the object is not lowered, and the structure is simplified, so that the production cost can be reduced.

According to the present invention, since the plurality of substrates have the same shape, the number of parts required for maintenance can be minimized, and when the UV LED on any one of the plurality of substrates reaches the end of its useful life, And thus the maintenance cost is greatly reduced.

In addition, according to the present invention, since the structure can easily align the plurality of substrates when they are fastened together, it is very easy to manufacture and maintain the light source module.

Further, according to the present invention, since the projecting portion or the depression on the substrate is formed corresponding to the arrangement and position of the UV LED, the area of the substrate around the mounted UV LED can be secured, and the substrate design is easy.

The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

1 is a view showing the shape of a UV LED module for irradiating ultraviolet rays in a conventional subject curing process and the difference of ultraviolet intensity on the surface of the subject,
FIG. 2 is a view showing an embodiment of the ultraviolet light source module according to the present invention, the ultraviolet ray intensity on the surface of the subject, and FIG.
3 to 5 are views showing another embodiment of the ultraviolet light source module according to the present invention,
6 is a view showing various examples of the diffusing surface of the UV LED shown on the surface of the object, and
7 to 9 are views showing another embodiment of the ultraviolet light source module according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to inform.

2 is a view showing an embodiment of the ultraviolet light source module according to the present invention and ultraviolet light intensity on the surface of the subject.

Referring to FIG. 2, the substrate assembly 10 of the ultraviolet light source module according to the present invention has a plurality of substrates 11 and 12 having the same shape. In Fig. 2, the moving subject for the curing process moves from the left to the right or from the right to the left in the drawing.

A plurality of UV LEDs 20 are mounted on the respective substrates. When viewed from a single substrate, these UV LEDs 20 are arranged such that their positions are shifted from each other as the movement progresses from the direction of the subject (left to right) do. In other words, as the UV LED is moved from the left side to the right side in the drawing, the UV LEDs are arranged to be offset downward in the drawing, offset again upward, and then repeat the offset pattern.

The UV LED 20 can be used in various forms such as a chip shape or a package shape.

On the other hand, on the substrate on which the UV LED 20 is mounted, a protrusion 41 and a depression 42 are formed along the rim. When the UV LED is offset downward in the drawing, the protrusion is protruded in the offset direction X And the depressed portion 42 is formed at a rim portion in the opposite direction Y opposite to the offset direction. 2 (a), the protrusions 41 and the depressions 42 are mutually interposed and the substrates are assembled as shown in FIG. 2 (b) A substrate assembly 10 is formed.

The intensity of ultraviolet light measured at the surface of the subject passing through the ultraviolet light source module formed by such a substrate assembly 10 is different from that when passing the B1-B2 portion and when passing the C1-C2 portion, As shown in Fig. That is, since the position of the facing UV LED is continuously offset as the subject moves, the dose of the ultraviolet rays received by the subject is on average the same, meaning that the subject curing is uniform in all the areas of the subject do.

That is, the gap between the UV LEDs 20 between the neighboring substrates 11 and 12 corresponds to D. However, when the substrates 11 and 12 are fastened to each other to form the substrate assembly 10, The actual spacing between the first electrode 20 and the second electrode 20 is reduced to D / 2.

Since the UV LEDs disposed on the substrate assembly 10 are appropriately distributed to the plurality of substrates 11 and 12, when an error occurs in some of the UV LEDs, the corresponding UV LEDs It is possible to continuously maintain desired ultraviolet light emission performance by replacing only the substrate on which the organic EL element is mounted.

In particular, the shape in which the protruding portion is provided on the edge of the UV LED which is mounted on the substrate in the offset direction and the depression is provided on the opposite side is sufficient to secure the substrate area around the UV LED.

As described above, according to the present invention, it is possible to uniformly distribute the UV LEDs used for curing UV by utilizing the shape of the substrate, and the protrusions are geometrically engaged with the depressed portions to precisely define the position of the substrate , Protrusions and depressions ensure the area of the substrate around the UV LEDs, which is easy to design, and the UV LEDs can be individually serviced.

Hereinafter, another embodiment of the present invention will be described with reference to FIG. Also in Fig. 3, the subject moving for the curing process moves from the left to the right or from the right to the left in the drawing. In the embodiment shown in FIG. 2, if the arrangement direction of the UV LEDs mounted on one substrate is in the same direction as the moving direction of the object, the embodiment of FIG. 3 includes the UV LEDs 20 May be a direction perpendicular to the moving direction of the subject.

Referring to FIG. 3A, the plurality of substrates 11 and 12 have the same shape, and the positions of the UV LEDs 20 mounted on the substrates are the same. In the embodiment of the present invention shown in FIG. 3, when the plurality of substrates 11 and 12 are fastened to each other, the substrates are fastened together with each other rotated 180 degrees to form the substrate assembly 10. The UV LED 20 on the first substrate 11 and the UV LED 20 on the second substrate 12 are arranged on the same side of the substrate 11, As the movement progresses from the left to the right, the positions are shifted from each other. As a result, the UV LED 20 is mounted at a predetermined position on the substrate 11 so that the UV LED can be offset upwardly or downwardly in the drawing when any one of the two neighboring substrates is aligned 180 degrees .

In the present invention, in order to ensure that when one of the adjacent substrates is engaged with each other in such a state that one of the adjacent substrates is rotated at 180 degrees, a protrusion 41 is formed at one end of the substrate, (42). In detail, there are two end portions at the edge portions where the adjacent two substrates 11 and 12 abut against each other (the right vertex of the upper portion of the substrate 11 is one end, and the right vertex of the lower portion of the drawing A protrusion 41 is formed at one end and a depression 42 is formed at the other end of the protrusion 41 and the depression 42. The shape of the protrusion 41 and the depression 42 correspond to each other. The protruding portion 41 of the substrate 11 and the substrate 12 are rotated by 180 degrees with respect to any one of the two substrates 11 and 12 of the same shape, The concave portion 42 of the substrate 11 and the protruding portion 41 of the substrate are engaged with each other.

As described above, the position of the UV LED 20 mounted on the substrate 11 is offset when the UV LED is aligned upward or downward when one of the two neighboring substrates is aligned at 180 degrees To be placed. Therefore, referring to the substrate 11 shown in FIG. 3, it can be seen that the UV LEDs 20 are relatively mounted at positions relatively upwards (in the drawing) in the substrate region. As a result, the substrate 12, which is aligned with the substrate 11 turned 180 degrees, is biased relative to the substrate area (in the figure) relative to the UV LEDs 20, The position of the UV LEDs are shifted from each other as the movement progresses. Thus, the spacing between the two UV LEDs in one substrate may be D, but the spacing between the two neighboring UV LEDs when viewed in the direction of the subject in the assembled substrate assembly 10 turning them 180 degrees is D / 2 .

At this time, the projecting portion 41 is formed at the end M relatively closer to the UV LED 20 than the two ends of the substrate 11, and the depressed portion 42 is formed by the UV LED 20 It is advantageous that the substrate area around the UV LED mounted on the substrate can be sufficiently secured.

FIG. 4 is an ultraviolet light source module according to another embodiment of the present invention. In contrast to FIG. 3, there are differences in the shape of the protrusion 41 and the depression 42. The shapes of the protrusions and depressions can be changed as long as they do not impair the essence of the invention.

5 is an ultraviolet light source module according to another embodiment of the present invention. FIG. 5 is a view showing that UV LEDs are arranged in the vertical direction in one of the substrates 11 and 12 in comparison with the embodiment shown in FIG. 2, and that the plurality of substrates are not only vertically There is a difference in that they are fastened to each other also in the left-right direction.

In the ultraviolet light source module shown in FIG. 5, the plurality of substrates 11 and 12 are all the same shape, and the positions of the UV LEDs 20 mounted on the substrates 11 and 12 are all the same. The plurality of substrates are fastened to each other not only in the vertical direction but also in the lateral direction as shown in the drawing, thereby constituting the substrate assembly 10.

The arrangement of the UV LEDs mounted on one substrate shows that the UV LEDs 20 mounted on the substrates 11 and 12 are offset from the UV LEDs disposed along the moving direction of the subject. This is for uniformly irradiating ultraviolet rays to all the areas of the subject when the subject moves. If the interval of the UV LEDs arranged in the vertical direction in the drawing is D, the distance that the UV LED mounted in the left and right direction in the drawing is offset may be D / 2. The offset distance can be appropriately selected in consideration of the number of UV LEDs disposed on the substrate, the distance between the subject and the UV LED, and the like.

It should be noted that the embodiment disclosed in Fig. 5 is different from the embodiments of Figs. 2 to 4 in that the periphery of the substrate is generally rectangular in shape, but the protrusions and depressions are formed in all four sides of the rectangular shape .

The principle in which protrusions and depressions are formed on the side of the upper side and the side of the lower side of the substrate in the figure is similar to the case of Fig. That is, the UV LEDs 20 mounted on the respective substrates in the left and right directions of the respective substrates are arranged in such a manner that their positions are shifted from each other as the movement progresses in the progress direction (left to right) of the subject and the UV LED is offset The protrusions are formed in the edge portions of the offset direction X and the depressions 42 are formed in the edge portions of the opposite direction Y in the offset direction. Therefore, the protrusions 41 and the depressions 42 formed on the upper and lower sides of the substrate in the figure are engaged with each other when the substrates are vertically coupled in the drawing.

In the drawing, positions where protrusions and depressions are formed on the left side and the right side of the substrate are as follows. In other words, a protrusion 41 is formed in a region A corresponding to a position where the UV LED 20 is mounted in the rim portion of the substrate which is biased to the left and right, A depression (42) is formed in the region (B). The shape of the projecting portion 41 and the depressed portion 42 are configured to be fittable with each other. The projection 41 and the depression 42 can be formed because the UV LEDs arranged in the lateral direction on the substrate are offset from each other. The positions of the projections 41 and the depressions 42 on the left side of the substrate and the positions of the projections 41 and the depressions 42 on the right side of the substrate are offset from each other as the UV LEDs arranged in the left- So that when the plurality of substrates are fastened to each other on the right and left sides, the protruding portions and depressed portions of the neighboring substrates are correspondingly engaged with each other. Therefore, the positions between the protruding portions formed on the left and right edge portions of the substrate and the substrate disposed laterally adjacent to each other by the depressions can be accurately defined.

That is, according to the embodiment illustrated in FIG. 5, each of the substrates 11 and 12 can be engaged and regulated in position in the up-and-down direction and the left-right direction. In particular, such a structure can constitute the substrate assembly 10 by fastening the substrates as much as necessary in the vertical direction as well as in the left-right direction, so that the substrate assembly can be mounted on one substrate 11) type as well as the irradiation time of ultraviolet rays to be irradiated to the substrate can be controlled.

Referring to FIGS. 2 to 5, it can be seen that the UV LEDs are disposed at the vertex of the hexagon and at the center of the hexagon. This corresponds to the vertex positions of equilateral triangles arranged so that sides and vertices of the neighboring equilateral triangles are mutually shared as indicated by a dotted line in FIG.

6 is a view showing various examples of the diffusing surface of the UV LED shown on the object surface. The diffusing surface is a line connecting a region having a luminous intensity of 50% at the peak of the light amount, and can be circular as shown in FIG. 6, but various shapes are possible depending on the shape of the light source. Also, it may be a line symmetric rather than a circular symmetry. In this case, the uniformity can be ensured by adjusting the spacing of the light sources in the horizontal axis and the vertical axis. As shown in FIG. 6, an example of the diffusion pattern of the UV LED is a shape in which the light source spreads from the point light source to one side, and the diffusing shape is substantially conical. This type of diffusion does not require orientation consideration when UV LEDs are mounted on a substrate of a flat plate.

In the present invention, it is exemplified that the diffusion angle is 120 degrees. The diffusion angle means the angle up to the portion where the intensity of the highest light is 50%. On the other hand, in the UV LED, the part with the highest light intensity is the central part. Of course, light can be detected even at a region outside the diffusing angle, but this is insignificant compared to the light irradiated within the diffusing angle.

6 (a) to (c), it can be understood that the distance between the ultraviolet light source module and the subject gradually increases.

Referring to FIG. 6A, all the points on the object substrate exist at a position where one diffusing surface exists, or two diffusing surfaces overlap each other. The portion 1 irradiated by one UV LED may have a light intensity of about 100% and the portion 2 where the diffused surfaces of the two UV LEDs overlap with each other may be the edge portion of the diffusing surface , Each 50% of the overlapping portions can be combined to have a light intensity of about 100% or more. Therefore, when the diffusing surface of ultraviolet rays is formed on the surface of the object as shown in Fig. 6 (a), the irradiation amount of ultraviolet rays can be made more uniform.

6 (b), all the points on the subject substrate may be present at a position 1 with one diffusing surface, at a position 2 where two diffusing surfaces overlap, Are present at the overlapping position (3). However, in this form, there may be a considerable difference in ultraviolet intensity at the position where one diffusing surface and the three diffusing surfaces 3 overlap each other.

6 (c), all the points on the object substrate are present at the position 3 where the three diffusing surfaces are present, or at the positions where the four diffusing surfaces 4 overlap. The portion 3 where the three diffusing surfaces overlap each other can have a light intensity of about 300% or so in the portion 1 irradiated by the UV LED and the portion 4 where the diffusing surfaces of the four UV LEDs overlap each other It is possible to have a light intensity of about 300% or so because the two diffusing surfaces are close to the rim portion. Therefore, when the diffusing surface of ultraviolet rays is formed on the surface of the object as shown in Fig. 6 (c), the irradiation amount of ultraviolet rays can be more uniform.

If the ultraviolet module is far away from the subject, the uniformity may be increased. However, this is not desirable in that the height of the equipment must be increased as much as this, and that the diffused light is farther away from the light source, the light intensity is greatly reduced, and the use of more UV LEDs is required. From this point of view, the arrangement of the diffusing surfaces as described above is significant.

7 to 9 are views showing another embodiment of the ultraviolet light source module according to the present invention. 7 to 9, the subject to be subjected to the curing process can be moved in the left and right direction in the figure, and the subject can be moved in the up and down direction in the drawing.

Referring to FIG. 7, the ultraviolet light source module according to the present invention includes substrates 11 and 12 on which two or more UV LEDs 20 are mounted. The shapes of the substrates 11 and 12 may be the same, and the positions of the UV LEDs mounted on the respective substrates may be the same. This structure can be one of the ways to minimize the number of parts.

Next, as shown in FIG. 7 (a), a plurality of the substrates 11 and 12 are spaced apart from one another, and one ends of the substrates are rotatably supported by the first frame 51, The second frame body 52 rotatably supports the other ends thereof. In this state, when the second frame 52 is relatively moved with respect to the first frame body 51, the substrates are arranged diagonally as shown in Fig. 7 (b).

When the interval between the UV LEDs 20 mounted on one substrate is denoted by D, when the substrate 50 is relatively moved by tilting the substrate 50, the gap is reduced as shown in the drawing. Therefore, this structure makes it possible to increase the uniformity of the ultraviolet rays irradiated on the surface of the subject moving in the left and right direction in the drawing.

Also, according to the structure shown in FIG. 7 (b), the interval of the UV LEDs 20 between neighboring substrates is also reduced. Therefore, even when the curing process is performed on a subject moving up and down in the drawing, .

Although a structure in which a plurality of substrates 11 and 12 are disposed between the first frame body 51 and the second frame body 52 is shown as a basic form on the drawing, the embodiments of the present invention are not necessarily limited thereto. 8, the third frame body 53 is positioned further below the second frame body 52 and a plurality of boards are disposed between the second frame body 52 and the third frame body 53 It is also possible to do so. In this case, it is also possible to relatively move only the second frame body relative to the first frame body and the third frame body to tilt the substrates. In addition, the number of such frameworks can be increased as much as necessary.

Needless to say, it is also possible to replace or repair the above-described structure with only a substrate requiring maintenance.

The embodiment shown in FIG. 9 differs from the embodiment of FIG. 7 in that some of the substrates are turned by 180 degrees.

In other words, the plurality of substrates 11 and 12 are all the same shape, and the positions of the UV LEDs mounted on the respective substrates are also the same. However, as shown in FIG. 9A, The distance between the UV LEDs between the first substrate 11 and the second substrate 12 is set to be smaller than the distance D between the UV LEDs disposed on one substrate D / 2 can be further reduced. In this state, when the frame is moved as shown in FIG. 9 (b), the interval between the UV LEDs is further reduced. Therefore, even in this case, a more uniform amount of ultraviolet rays can be irradiated to the subject moving in the left and right direction as well as the subject moving in the up and down direction in the drawing.

Even when the light sources are uniformly arranged, the light sources can not overlap each other and thus may not be uniform. In order to solve this problem, the area of the object may be smaller than the area of the light source after the diffusing surface.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the invention is not limited to the disclosed exemplary embodiments. It is obvious that a transformation can be made. Although the embodiments of the present invention have been described in detail above, the effects of the present invention are not explicitly described and described, but it is needless to say that the effects that can be predicted by the configurations should also be recognized.

10: substrate assembly
11: a first substrate
12: second substrate
20: UV LED
41:
42:
50: Frame
51: First frame
52:
53: Third frame
S: subject

Claims

As an ultraviolet light source module,
In the ultraviolet light source module, two or more UV LEDs 20 are mounted,
The mounted UV LED may be configured so that all points of the relatively moving subject 30 for curing process are within the diffusing surface of one or two UV LEDs or are within the diffusing surface of three or four UV LEDs The ultraviolet light source module comprising:

The method according to claim 1,
The UV LED (20) is a point light source having a circular diffusing surface.

The method according to claim 1,
Wherein the position of the UV LED (20) is disposed at a vertex position of equilateral triangles arranged such that sides and vertices of the UV light are adjacent to each other.

The method according to claim 1,
Wherein the ultraviolet module includes a substrate assembly (10) having a plurality of substrates (11, 12) on which at least two UV LEDs (20) are mounted.

1. A subject ultraviolet light source module,
The ultraviolet module includes a substrate assembly (10) having a plurality of substrates (11, 12) on which two or more UV LEDs (20) are mounted,
Wherein the position of the UV LED located on the substrate assembly is offset as the movement proceeds, when viewed in the direction of movement of the relatively moving subject (30).

The method according to claim 4 or 5,
Wherein the plurality of substrates (11, 12) have the same shape.

The method according to claim 4 or 5,
The peripheries of the substrates 11 and 12 are generally rectangular in shape and the periphery of the substrate 11 is in contact with the periphery of the adjacent substrate 12,
The protruding portion 41 is formed on one substrate 11 and the depressed portion 42 having a shape corresponding to the protruding portion 41 is formed on the other substrate 12.

The method according to claim 4 or 5,
Wherein the UV LEDs (20, 20) mounted on the substrates (11, 12) are offset from each other in the direction of movement of the subject.

The method of claim 8,
A protrusion 41 is formed on the edge X of the substrate in the offset direction of the UV LED and a depression 42 is formed on the edge Y of the substrate in the direction opposite to the offset direction of the UV LED Ultraviolet light source module.

The method of claim 6,
The protrusions 41 of the substrate 11 are sandwiched by the depressed portions 42 of the substrate against which the plurality of substrates 11 and 12 are aligned in the same direction, And the projecting portion (41) of the substrate abutted on the depression (42) is fitted.

The method of claim 10,
A protrusion 41 is formed in a region A corresponding to the position where the UV LED 20 is mounted on the rim of the substrate which abuts against each other and a region B corresponding to the position where the UV LEDs 20 are mounted, And the shape of the protrusion (41) and the depression (42) can be fitted to each other.

The method of claim 6,
The UV LED 20 disposed between neighboring substrates in a state in which the substrates 12 are rotated while being rotated by 180 degrees are brought into contact with the object 30 moving relatively for the curing process, And the positions of the ultraviolet light source modules are shifted from each other as the movement progresses.

The method of claim 12,
The projecting portion 41 of the substrate 11 is fitted into the depression 42 of the substrate to which the substrate 11 is abutted and the projecting portion 41 of the substrate abutted on the depression 42 of the substrate 11 is fitted.

14. The method of claim 13,
The protrusions 41 and the depressions 42 are formed at one end and the other end of a rim portion abutting the adjacent substrate, respectively. The protrusions 41 are relatively close to the UV LED 20 at both ends Is formed at the end portion (M), and the depression (42) is formed at the other end (N) relatively far from the UV LED (20) at both ends.

The method according to claim 4 or 5,
Wherein the substrates (11,12) are removably coupled to the substrate assembly (10).

1. A subject ultraviolet light source module,
The UV module comprises a substrate (11, 12) on which two or more UV LEDs (20) are mounted; And
And a second frame body (52) rotatably supporting the other ends of the substrates so as to rotatably support one ends of the substrates in a state where a plurality of the substrates are arranged apart from each other, (50)
When the first frame 51 and the second frame 52 are displaced relative to each other in the moving direction of the relatively moving object 30 for the curing process, Ultraviolet light source module with reduced spacing between LEDs.

18. The method of claim 16,
The positions of the UV LEDs 20 mounted on the two different substrates 11 and 12 in a state where the plurality of substrates are arranged side by side are aligned in the moving direction of the subject 30 relatively moving for the curing process An ultraviolet light source module whose positions are shifted from each other.

18. The method of claim 16,
And each of the substrates is detachably coupled to the frame body.

18. The method of claim 16,
Further comprising a third frame body (53) in a direction opposite to a direction in which the first frame body (51) is positioned with respect to the second frame body (52)
12. The ultraviolet light source module according to claim 1, wherein a plurality of substrates (11, 12) are rotatably supported between the second frame body and the third frame body by the second frame body and the third frame body, respectively.