Illuminating device

Abstract

To provide an illuminating device that can enhance luminance without increasing its thickness and the number of light sources.SOLUTION: An illuminating device includes: a board; a reflection unit arranged on the board; a plurality of light sources arranged on the board; and a light guide member arranged on the reflection unit, and covering the plurality of light sources. The reflection unit includes a first reflection member arranged on the board, a second reflection member arranged on the first reflection member, and a separation member arranged between the first reflection member and the second reflection member. The second reflection member is separated from the first reflection member by the separation member. One region of each of the light sources penetrates the first reflection member, the separation member, and the second reflection member, and is in contact with the light guide member. The separation member includes a plurality of unit separation members each comprising a first separation region.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] Embodiments of the present invention relate to a lighting device using an LED as a light source, and more particularly to lighting having a thinner structure, such as indoor lighting, vehicle lamps, backlight units, and liquid crystal display devices. It relates to the structure of a lighting device applicable to the structure.

Background Art

[0002] Devices that guide light emitted from a light source to achieve lighting are widely required in lighting lamps, vehicle lamps, liquid crystal display devices, and the like. In such lighting devices, a technology for thinning the structure of the equipment and a structure that can improve the light efficiency are recognized as the most important technologies.

[0003] As an example of the application of such a lighting device, a liquid crystal display device will be described.

[0004] Referring to FIG. 1, in such a lighting device 1, a flat light guide plate 30 is disposed on a substrate 20, and a plurality of side-type LEDs 10 (only one is shown) are arranged in an array on the side surface of the light guide plate 30.

[0005] The light (L) incident from the LED 10 on the light guide plate 30 is reflected upward by a fine reflection pattern or a reflection sheet 40 provided on the lower surface of the light guide plate 30 and then emitted from the light guide plate 30, and then provides light to the LCD panel 50 above the light guide plate 30.

[0006] As shown in FIG. 2, such a lighting device may be formed with a structure in which a plurality of optical sheets such as a diffusion sheet 31, prism sheets 32 and 33, and a protective sheet 34 are further added between the light guide plate 30 and the LCD panel 50. ​​​​​​​​​

[0007] Therefore, such a light guide plate is basically used as an essential component of such a lighting device. However, due to this, there is a limit to the thinning of the product due to the thickness of the light guide plate itself, and in the case of a large-area lighting device, it causes a problem of deterioration in image quality. Therefore, such a light guide plate is basically used as an essential component of such a lighting device. However, due to this, there is a limit to the thinning of the product due to the thickness of the light guide plate itself, and in the case of a large-area lighting device, it causes a problem of deterioration in image quality. Therefore, such a light guide plate is basically used as an essential component of such a lighting device. However, due to this, there is a limit to the thinning of the product due to the thickness of the light guide plate itself, and in the case of a large-area lighting device, it causes a problem of deterioration in image quality. Summary of the Invention Problems to be Solved by the Invention

[0008] Embodiments of the present invention are made to solve the above-described problems, and include a reflection unit having a separation region on the surface of a printed circuit board, maximizing the improvement of luminance together with the reflectivity of light, and increasing the luminance without increasing the thickness of the lighting device or the number of light sources. A lighting device capable of maximizing the light adjustment and reflection efficiency by the pattern design of a separation member (spacer) for forming the separation region can be provided. Embodiments of the present invention are made to solve the above-described problems, and include a reflection unit having a separation region on the surface of a printed circuit board, maximizing the improvement of luminance together with the reflectivity of light, and increasing the luminance without increasing the thickness of the lighting device or the number of light sources. A lighting device capable of maximizing the light adjustment and reflection efficiency by the pattern design of a separation member (spacer) for forming the separation region can be provided. Embodiments of the present invention are made to solve the above-described problems, and include a reflection unit having a separation region on the surface of a printed circuit board, maximizing the improvement of luminance together with the reflectivity of light, and increasing the luminance without increasing the thickness of the lighting device or the number of light sources. A lighting device capable of maximizing the light adjustment and reflection efficiency by the pattern design of a separation member (spacer) for forming the separation region can be provided. Embodiments of the present invention are made to solve the above-described problems, and include a reflection unit having a separation region on the surface of a printed circuit board, maximizing the improvement of luminance together with the reflectivity of light, and increasing the luminance without increasing the thickness of the lighting device or the number of light sources. A lighting device capable of maximizing the light adjustment and reflection efficiency by the pattern design of a separation member (spacer) for forming the separation region can be provided. Embodiments of the present invention are made to solve the above-described problems, and include a reflection unit having a separation region on the surface of a printed circuit board, maximizing the improvement of luminance together with the reflectivity of light, and increasing the luminance without increasing the thickness of the lighting device or the number of light sources. A lighting device capable of maximizing the light adjustment and reflection efficiency by the pattern design of a separation member (spacer) for forming the separation region can be provided.

[0009] Note that the lighting device according to an embodiment of the present invention removes a light guide plate, which is an essential component in the structure of a general lighting device, and forms a structure for guiding a light source using a film-type resin layer, thereby reducing the number of light sources, thinning the overall thickness of the lighting device, and providing a highly reliable product capable of increasing the degree of freedom in product design. Note that the lighting device according to an embodiment of the present invention removes a light guide plate, which is an essential component in the structure of a general lighting device, and forms a structure for guiding a light source using a film-type resin layer, thereby reducing the number of light sources, thinning the overall thickness of the lighting device, and providing a highly reliable product capable of increasing the degree of freedom in product design. Note that the lighting device according to an embodiment of the present invention removes a light guide plate, which is an essential component in the structure of a general lighting device, and forms a structure for guiding a light source using a film-type resin layer, thereby reducing the number of light sources, thinning the overall thickness of the lighting device, and providing a highly reliable product capable of increasing the degree of freedom in product design. Note that the lighting device according to an embodiment of the present invention removes a light guide plate, which is an essential component in the structure of a general lighting device, and forms a structure for guiding a light source using a film-type resin layer, thereby reducing the number of light sources, thinning the overall thickness of the lighting device, and providing a highly reliable product capable of increasing the degree of freedom in product design. Means for Solving the Problems

[0010] As means for solving the above-described problems, a lighting device according to an embodiment of the present invention includes a plurality of LED light sources formed on a printed circuit board, and a reflection unit laminated on the printed circuit board in a structure through which the LED light sources penetrate. The reflection unit is formed on the printed As means for solving the above-described problems, a lighting device according to an embodiment of the present invention includes a plurality of LED light sources formed on a printed circuit board, and a reflection unit laminated on the printed circuit board in a structure through which the LED light sources penetrate. The reflection unit is formed on the printed As means for solving the above-described problems, a lighting device according to an embodiment of the present invention includes a plurality of LED light sources formed on a printed circuit board, and a reflection unit laminated on the printed circuit board in a structure through which the LED light sources penetrate. The reflection unit is formed on the printed A reflective member containing a metallic substance that adheres to the surface of a printed circuit board or a first reflective member made of white PET (white polyethylene terephthalate), and a second reflective member made of a transparent material that is separated from the first reflective member and forms the separation region are provided. yethylen terephthalte), and a second reflective member made of a transparent material that is separated from the first reflective member and forms the separation region. By doing so, a reflective unit including a metallic reflective layer on the surface of a printed circuit board is provided, maximizing the improvement in both the light reflectivity and the luminance. Further, by realizing the separation region using white PET for the reflective unit, the improvement in both the light reflectivity and the luminance is maximized, and the luminance can be increased without increasing the thickness of the lighting device or the number of light sources. The pattern design of the separation member (spacer) that forms the separation region can maximize the light adjustment and the reflection efficiency. To provide.

[0011] Accordingly, by providing a reflective unit having a separation region on the surface of a printed circuit board using a metallic reflective substance or white PET, the improvement in both the light reflectivity and the luminance is maximized, and the luminance can be increased without increasing the thickness of the lighting device or the number of light sources. The pattern design of the separation member (spacer) that forms the separation region can maximize the light adjustment and the reflection efficiency. By realizing the separation region using white PET for the reflective unit, the improvement in both the light reflectivity and the luminance is maximized, and the luminance can be increased without increasing the thickness of the lighting device or the number of light sources. The pattern design of the separation member (spacer) that forms the separation region can maximize the light adjustment and the reflection efficiency. Even without increasing the thickness of the lighting device or the number of light sources, the luminance can be increased, and the pattern design of the separation member (spacer) that forms the separation region can maximize the light adjustment and the reflection efficiency. By the pattern design of the separation member (spacer) that forms the separation region, the light adjustment and the reflection efficiency can be maximized.

Effect of the Invention

[0012] According to the present invention, by providing a reflective unit having a separation region on the surface of a printed circuit board using a metallic reflective substance or white PET, the improvement in both the light reflectivity and the luminance is maximized, and the luminance can be increased without increasing the thickness of the lighting device or the number of light sources. The pattern design of the separation member (spacer) that forms the separation region can maximize the light adjustment and the reflection efficiency. Even without increasing the thickness of the lighting device or the number of light sources, the luminance can be increased, and the pattern design of the separation member (spacer) that forms the separation region can maximize the light adjustment and the reflection efficiency. The pattern design of the separation member (spacer) that forms the separation region can maximize the light adjustment and the reflection efficiency. There is also an effect that the light adjustment and the reflection efficiency can be maximized.

[0013] In addition, the present invention forms an optical pattern layer having an optical pattern, patterns an adhesive substance (adhesive pattern layer) to provide a separation region, thereby removing the occurrence of hot spots and dark portions generated in the light shielding pattern portion, ensuring the reliability between components adhered to the adhesive substance, and realizing a lighting device having no significant difference in optical characteristics. By patterning (adhesive pattern layer) the adhesive substance to provide a separation region, the occurrence of hot spots and dark portions generated in the light shielding pattern portion can be removed, the reliability between components adhered to the adhesive substance can be ensured, and a lighting device having no significant difference in optical characteristics can be realized. The pattern design of the separation member (spacer) that forms the separation region can maximize the light adjustment and the reflection efficiency. The reliability between components adhered to the adhesive substance is ensured, and a lighting device having no significant difference in optical characteristics can be realized. There is an effect that precise alignment between them is possible.

[0014] In addition, by providing a separation module having a separation layer using a separately patterned diffusion plate or a separate member, the diffusion and optical characteristics of light uniformity of the lighting device can be improved. There is an effect.

[0015] In addition, by removing the light guide plate, which is an essential component in the structure of a general lighting device, and forming a structure for guiding the light source using a film-type resin layer, the number of light sources can be reduced, the overall thickness of the lighting device can be thinned, and the degree of freedom in the design of the product can be increased. There is an effect. There is an effect.

[0016] In particular, by mounting a side-emitting light-emitting diode directly below while significantly reducing the number of light sources, the optical characteristics can be ensured, and it can also be applied to the structure of a flexible display by removing the light guide plate. By providing a diffusion plate including a reflection member having a reflection pattern and a separation layer in the resin layer, there is also an effect that stable light-emitting characteristics can be ensured. There is an effect.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Mode for Carrying Out the Invention

[0018] Hereinafter, the configuration and operation according to the present invention will be specifically described with reference to the attached drawings. When describing with reference to the attached drawings, the same components are given the same reference numerals regardless of the reference signs in the drawings, and duplicate explanations thereof are omitted. Terms such as first, second, etc. can be used to describe various components, but the above components should not be limited by the above terms. The above terms are used only for the purpose of distinguishing one component from another.

[0019] The gist of the present invention is to arrange a reflection unit having a separation region below an LED light source in a lighting device using an LED as a light source to improve the reflectance and luminance. In particular, in the structure of a conventional lighting device, an optical pattern layer formed by patterning an adhesive substance (adhesive pattern layer) to form a separation region or a diffusion plate is patterned, or a separation module having a separation layer is provided using a separate member to improve optical characteristics. In particular, by removing a light guide plate and forming it with a resin layer, while significantly reducing the overall thickness of the lighting device, the gist is to provide a structure capable of reducing the number of light sources. (First Embodiment) FIG. 3 is a cross-sectional conceptual diagram showing a main part of the lighting device according to the present invention.

[0020] Referring to FIG. 3, the lighting device according to the present invention includes a plurality of LED light sources 130 formed on a printed circuit board 110. On the upper surface of the printed circuit board 110, a reflection unit 120 is laminated on the printed circuit board 110 in a structure through which the LED light sources 130 penetrate. Specifically, in this case, the reflection unit 120 is characterized by including a separation region A1 inside. The separation region A1 can improve the reflection efficiency of the light emitted from the light source 130 and maximize the brightness. In particular, the reflection unit 120 can include a first reflection member 121 that adheres to the surface of the printed circuit board 110, and a second reflection member 122 made of a transparent material that is separated from the first reflection member 121 and forms the separation region A1. The first and second reflection members 121 and 122 are laminated on the printed circuit board, and the LED light source 130 protrudes to the outside through the holes formed in the reflection members. The formation of the separation region A1 can be formed in a structure that is integrally pressure-bonded without using separate members such as adhesives. Further, as shown in the figure, air is accommodated by a separation member 123 such as a separate adhesive member to form the separation region A1. It is also possible to form the separation region A1 by separating the first and second reflection members 121 and 122.

[0021]

[0022]

[0022]

[0023]

[0023] In this case, the first reflection member 121 can use a film formed with a reflection substance for reflecting light, that is, a metal layer such as Ag. The second reflection member 122 is the LED It is more desirable to use a transparent film made of a material such that the light emitted from is transmitted to the surface of the first reflecting member 122 and then re-reflected. In particular, in the present invention, it is desirable to use white PET in particular as the reflecting structure for reflecting light. That is, in the specific reflecting unit according to the present invention, the first reflecting member can be formed of a general metal reflecting material layer (such as Ag), but in order to maximize the improvement in luminance, it is good to use white PET. When forming the first reflecting member using white PET in the realization of the

[0024] reflecting unit, an effect of improving the luminance by about 30% compared to the conventional case can be obtained. In particular, in addition to the light emitted from the light source 130 passing through the first reflecting member and being re-reflected by the second reflecting member, it is more desirable to provide a reflection pattern 124 by white printing on the surface of the second reflecting member 122 to further promote the dispersion of light and improve the luminance. By providing a reflection pattern 130 so that the reflectance of light

[0025] can be greatly improved, the reflection pattern can be printed using a reflective ink containing any one of TiO2, CaCO3, BaSO4, Al2O3, silicon, and PS. In particular, the light source of the lighting device according to the present invention can be applied with various types of light sources. Particularly preferably, an LED having a side-emitting structure can be used. In this case, it is desirable to form the reflection pattern in the light emission direction of the LED

[0026] FIG. 4 is a diagram showing an example of a separation member that constitutes a reflection unit included in the lighting device according to the present invention shown in FIG. 3. That is, the separation member according to the present invention can form a separation region by performing a general separation function such as a spacer member that simply separates the first reflection member and the second reflection member or a spacer member having adhesiveness. However, more preferably, in order to improve the efficiency of the arrangement of the separation region and the adhesion efficiency, the separation member can be formed by patterning in a pattern structure as shown in FIG. 4 uniformly or randomly.

[0027] That is, the separation member according to the present invention can form a separation region by performing a general separation function such as a spacer member that simply separates the first reflection member and the second reflection member or a spacer member having adhesiveness. However, more preferably, in order to improve the efficiency of the arrangement of the separation region and the adhesion efficiency, the separation member can be formed by patterning in a pattern structure as shown in FIG. 4 uniformly or randomly. That is, the separation member according to the present invention can form a separation region by performing a general separation function such as a spacer member that simply separates the first reflection member and the second reflection member or a spacer member having adhesiveness. However, more preferably, in order to improve the efficiency of the arrangement of the separation region and the adhesion efficiency, the separation member can be formed by patterning in a pattern structure as shown in FIG. 4 uniformly or randomly. That is, the separation member according to the present invention can form a separation region by performing a general separation function such as a spacer member that simply separates the first reflection member and the second reflection member or a spacer member having adhesiveness.

[0028] As shown in FIG. 4, the separation member 123 can be formed in a two-dimensional or three-dimensional structure in which a plurality of unit separation members 123a having a cavity formed therein are arranged, and a first separation portion 123b is formed in a structure where the inside of the unit separation member 123a is empty. That is, the cross section of the unit separation member 123a can be formed in various shapes such as a polygonal shape, a circular shape, and an elliptical shape. In particular, as shown in the figure, in addition to the structure in which a plurality of each unit separation member 123a are arranged in close contact with each other, they are arranged in an irregular structure with each other, and the first separation portion 123b inside the unit separation member 123a and the second separation portion 123c in the empty space between the respective unit separation members 123a can also be formed. As shown in FIG. 4, the separation member 123 can be formed in a two-dimensional or three-dimensional structure in which a plurality of unit separation members 123a having a cavity formed therein are arranged, and a first separation portion 123b is formed in a structure where the inside of the unit separation member 123a is empty. That is, the cross section of the unit separation member 123a can be formed in various shapes such as a polygonal shape, a circular shape, and an elliptical shape. In particular, as shown in the figure, in addition to the structure in which a plurality of each unit separation member 123a are arranged in close contact with each other, they are arranged in an irregular structure with each other, and the first separation portion 123b inside the unit separation member 123a and the second separation portion 123c in the empty space between the respective unit separation members 123a can also be formed. That is, the cross section of the unit separation member 123a can be formed in various shapes such as a polygonal shape, a circular shape, and an elliptical shape. In particular, as shown in the figure, in addition to the structure in which a plurality of each unit separation member 123a are arranged in close contact with each other, they are arranged in an irregular structure with each other, and the first separation portion 123b inside the unit separation member 123a and the second separation portion 123c in the empty space between the respective unit separation members 123a can also be formed. That is, the cross section of the unit separation member 123a can be formed in various shapes such as a polygonal shape, a circular shape, and an elliptical shape. In particular, as shown in the figure, in addition to the structure in which a plurality of each unit separation member 123a are arranged in close contact with each other, they are arranged in an irregular structure with each other, and the first separation portion 123b inside the unit separation member 123a and the second separation portion 123c in the empty space between the respective unit separation members 123a can also be formed. That is, the cross section of the unit separation member 123a can be formed in various shapes such as a polygonal shape, a circular shape, and an elliptical shape. In particular, as shown in the figure, in addition to the structure in which a plurality of each unit separation member 123a are arranged in close contact with each other, they are arranged in an irregular structure with each other, and the first separation portion 123b inside the unit separation member 123a and the second separation portion 123c in the empty space between the respective unit separation members 123a can also be formed. That is, the cross section of the unit separation member 123a can be formed in various shapes such as a polygonal shape, a circular shape, and an elliptical shape. In particular, as shown in the figure, in addition to the structure in which a plurality of each unit separation member 123a are arranged in close contact with each other, they are arranged in an irregular structure with each other, and the first separation portion 123b inside the unit separation member 123a and the second separation portion 123c in the empty space between the respective unit separation members 123a can also be formed. That is, the cross section of the unit separation member 123a can be formed in various shapes such as a polygonal shape, a circular shape, and an elliptical shape. In particular, as shown in the figure, in addition to the structure in which a plurality of each unit separation member 123a are arranged in close contact with each other, they are arranged in an irregular structure with each other, and the first separation portion 123b inside the unit separation member 123a and the second separation portion 123c in the empty space between the respective unit separation members 123a can also be formed.

[0029] FIG. 5 is a diagram showing a specific example of the reflection unit shown in FIGS. 3 and 4. The reflection unit 120 according to the present invention includes, as described above, a first reflection member 121 that is in close contact with the surface of the printed circuit board, and a second reflection member 122 that is arranged separately so as to face the first reflection member. In particular, the second reflection member 122 is a film made of a transparent material such as PET. That is, the cross section of the unit separation member 123a can be formed in various shapes such as a polygonal shape, a circular shape, and an elliptical shape. In particular, as shown in the figure, in addition to the structure in which a plurality of each unit separation member 123a are arranged in close contact with each other, they are arranged in an irregular structure with each other, and the first separation portion 123b inside the unit separation member 123a and the second separation portion 123c in the empty space between the respective unit separation members 123a can also be formed. That is, the cross section of the unit separation member 123a can be formed in various shapes such as a polygonal shape, a circular shape, and an elliptical shape. In particular, as shown in the figure, in addition to the structure in which a plurality of each unit separation member 123a are arranged in close contact with each other, they are arranged in an irregular structure with each other, and the first separation portion 123b inside the unit separation member 123a and the second separation portion 123c in the empty space between the respective unit separation members 123a can also be formed. That is, the cross section of the unit separation member 123a can be formed in various shapes such as a polygonal shape, a circular shape, and an elliptical shape. In particular, as shown in the figure, in addition to the structure in which a plurality of each unit separation member 123a are arranged in close contact with each other, they are arranged in an irregular structure with each other, and the first separation portion 123b inside the unit separation member 123a and the second separation portion 123c in the empty space between the respective unit separation members 123a can also be formed. The lumes can be applied, and an adhesive material is patterned to form a separation member 123 that separates the first and second reflecting members 121 and 12 2 to form a separation region.

[0030] In particular, for maximizing the reflection efficiency, the first reflecting member 121 includes an optical film 126 adhered through an adhesive agent (primer; T1, T2), and the optical film 126 is also laminated on a release film 128 through an adhesive substance (PSA) 127. It can be formed in a structure.

[0031] In the structure shown in FIG. 5, different from the embodiment of the first reflecting member, the first reflecting member 121 can be formed using white PET as a reflecting structure for reflecting light.

[0032] FIG. 6 is a result table for comparing the degree of improvement in the luminance of the lighting device when realizing the structure of the reflection unit according to the present invention (CIE X and CIE Y are chromaticity tables). The illustrated table shows that (A) measures the luminance when only one reflecting member formed of Ag is formed on the surface of the printed circuit board in the structure shown in FIG. 3, and (B) is the structure of the reflection unit according to the present invention, that is, an adhesive pattern substance is formed of silicon to form the pattern of FIG. 4, and when the first reflecting member is an Ag film, the result value of the luminance improvement is measured compared with the conventional (A) structure.

[0033] Also, (C) is different from (B) in that the first reflecting member is formed of white PET, and thereby, the result value of the luminance improvement is measured compared with the conventional (A) structure.

[0034] Measurement results: In the case of (A), the luminance is 6605 nit. When taking this as a reference, in the case of (B), with the structure, the luminance is 7468 nit, showing a luminance improvement of about 13%. In the case of (C) which is formed by including the white PET according to the present invention, the luminance is 8472 nit and shows a luminance increase rate of 28.6% compared to (A). That is, when having a structure (separation region) in which the adhesive material layer is patterned and using white PET, the maximization of luminance improvement can be realized.

[0035] (Second Embodiment) FIG. 7 shows another embodiment of the lighting device according to the present invention.

[0036] That is, the second embodiment according to the present invention realizes a structure in which a light guide member is laminated on the above-mentioned printed circuit board in the above-mentioned first embodiment. As the above light guide member, a resin layer can be used. Such a resin layer corresponds to a configuration that substitutes for a plate-shaped light guide plate used in, for example, the lighting device of a liquid crystal display device, and performs a function of guiding the light emitted from the light source forward.

[0037] Referring to FIG. 7, the lighting device according to the present invention further includes a plurality of LED light sources 130 formed on a printed circuit board 110 and a light guide member that diffuses and guides the emitted light forward. Hereinafter, an embodiment in which the above light guide member is realized by a resin layer will be described. That is, the resin layer 140 is laminated in a structure surrounding the periphery of the LED light source 130 and performs a function of dispersing the light of the light source emitted in the lateral direction. That is, the function of the conventional light guide plate is performed by the resin layer 140.

[0038] The resin layer can be made of any material that can diffuse light. As an example, the resin layer according to one embodiment of the present invention is a urethane acrylate resin. Resins based on synthetic oligomers can be used. A mixture of tanacrylate oligomer and polyacrylic polymer type was used. Of course, the low boiling point dilution type reactive monomer IBOA (isopropyl alcohol) is also included. bornyl acrylate), HPA(Hydroxylpropyl acryla) te), 2-HEA (2-Hydroxyethyl acrylate), etc. The polymer may further include a photoinitiator (e.g., 1-hydroxycyclohexane) as an additive. 1-hydroxycyclohexyl phenyl ketone ne) or antioxidants, etc. may be mixed.

[0039] The resin layer 140 includes a light diffuser 141 to increase the diffusion and reflection of light. In this case, the light diffuser may include beads. The beads are preferably contained in the resin layer at 0.01 to 0.3% of the total weight. The light emitted from D in the lateral direction is diffused and reflected by the resin layer 140 and the beads. It will move in an upward direction.

[0040] This, together with the above-mentioned reflection unit 120 according to the present invention, further enhances the reflection function. Therefore, the presence of the resin layer significantly reduces the thickness of the conventional light guide plate. This not only reduces the thickness of the product, but also makes it soft and flexible. It becomes applicable to a flexible display and has versatility.

[0041] (Third Embodiment) A structure improved from the structure of the second embodiment described above forms an optical pattern layer on the resin layer to promote light diffusion. The structure of a lighting device according to a third embodiment will be described.

[0042] That is, referring to FIG. 8, the lighting device according to the present invention has a structure including an optical pattern layer 150 including an optical pattern 151 disposed above the resin layer 14 shown in FIG. 7. It can be formed.

[0043] In particular, the optical pattern layer 150 can be configured to include an adhesive pattern layer 153 that forms a second separation region 152 surrounding the periphery of the optical pattern. That is, the adhesive pattern layer 153 forms a separated space (second separation region) having a pattern of a certain shape in the optical pattern 151, and an adhesive substance is applied to other portions.

[0044] That is, in the illustrated structure, in the positional relationship between the optical pattern layer 150 and the adhesive pattern layer 153, the optical pattern layer 150 includes a first substrate 150A and a second substrate 150B that include the optical pattern therein, and the adhesive pattern layer 153 is applied to portions other than the second separation region 152 that surrounds the periphery of the light-shielding pattern, and the first substrate 150A and the second substrate 150B are adhered.

[0045] That is, the optical pattern 151 can be formed of a light-shielding pattern to prevent the concentration of light emitted from the LED light source 130. For this purpose, the optical pattern 151 and the LED light source 1 Alignment is required with 30, and adhesion will be performed using an adhesive member to ensure the fixing force after alignment.

[0046] The first substrate 150A and the second substrate 150B can use substrates made of materials with excellent light transmittance, and for example, PET can be used. In this case, the optical pattern 151 disposed between the first substrate 150A and the second substrate 150B basically functions to prevent the light emitted from the LED light source from concentrating, and can be formed on either the first substrate 150A or the second substrate 150B by light-shielding printing. The two substrates are adhered through an adhesive layer coated with an adhesive substance around the peripheral portion of the light-shielding pattern to achieve alignment. That is, the adhesion structure of the first substrate 150A and the second substrate 150B will further perform the function of fixing the printed light-shielding pattern 151. Also, the adhesive layer can use a heat-curable PSA, a heat-curable adhesive, or a UV-curable PSA-type substance.

[0047] When forming and adhering the adhesive pattern layer 153, if adhered in a pattern structure that forms the second separation region 152, it is possible to prevent the occurrence of strong hot spots (Hot spot) or dark portions generated when the adhesive substance overlaps the light-shielding pattern, and the presence of an air layer can enhance the light uniformity.

[0048] In addition to the above-described configuration, the lighting device according to the present invention having the above-described structure can include a diffusion plate 170 above the resin layer 140, and can further include a separation module 160 having a third separation region 161 between the diffusion plate 170 and the optical pattern layer 150. In addition, a prism sheet, a protective sheet, etc. may be additionally provided on the upper part of the diffusion plate.

[0049] FIG. 9 conceptually shows the configuration of the optical pattern 151, the adhesive pattern layer 153, and the second separation region 152 formed thereby. It is a figure which shows conceptually the structure of the 2nd separation area | region 152 formed.

[0050] Surrounding the peripheral part of the optical pattern 151 printed in a specific pattern on the first substrate When the adhesive pattern layer 153 is formed using an adhesive substance with a certain structure, a certain separation space is formed while the second substrate 150B is adhered. Such a separation space forms a sealed structure with a separation layer formed, which is defined as the 'second separation region'. The planar shape of the first separation region 152 formed by the adhesive pattern layer 153 can be formed in various shapes such as circular, elliptical, rectangular, square, polygonal, etc. Also, the adhesive pattern layer can be formed using a thermosetting PSA, a thermosetting adhesive, a UV-curing type PSA type substance. It can be formed using a substance of the PSA type.

[0051] In addition, the optical pattern 151 has a light-shielding effect in a certain part to prevent a phenomenon in which the intensity of light becomes excessively strong and the optical characteristics deteriorate, or yellowish light is derived. That is, it is desirable to form a light-shielding pattern using a light-shielding ink so that light is not concentrated. That is, a light-shielding pattern can be printed using a light-shielding ink so that light is not concentrated. It can be printed using a light-shielding ink so that light is not concentrated.

[0052] The optical pattern does not function to completely block light, but can be formed so that the light-shielding degree and the diffusion degree of light can be adjusted with one optical pattern so as to execute a partial light-shielding and diffusion function of light. More preferably, the optical pattern according to the present invention can also be formed in a laminated printing structure of a composite pattern. The laminated printing structure means forming one pattern and then forming another pattern on top of it. The laminated printing structure means forming one pattern and then It refers to a structure formed by printing another pattern shape on the part.

[0053] As an example, the above optical pattern 151 is formed by using a diffusion pattern formed with a light-shielding ink containing any one or more substances selected from TiO2, CaCO3, BaSO4, Al2O3, and silicon on the lower surface of the polymer film in the light-emitting direction. and a superimposed printing structure of a light-shielding pattern using a light-shielding ink containing a mixture of Al or Al and TiO2. That is, after forming a diffusion pattern by white printing on the surface of the polymer film, a light-shielding pattern can be formed thereon, or it is also possible to form a double structure in the reverse order. Of course, such a pattern formation design can be variously deformed considering the light efficiency, intensity, and light-shielding rate. Or, in a sequential lamination structure, a light-shielding pattern of a metal pattern is formed in the central layer, and diffusion patterns are formed on the upper and lower parts thereof, respectively, to form a triple structure. In such a triple structure, it is possible to form the above-mentioned substances. As a desirable example, one of the diffusion patterns is formed using TiO2 with excellent refractive index, and CaCO3 with excellent light stability and color sense is used together with TiO2 to form the other diffusion pattern, and Al with excellent concealment is used to form a light-shielding pattern. The triple structure can ensure the light efficiency and uniformity. In particular, CaCO3 functions to block the exposure of yellow light, and finally realizes white light, so that more stable light efficiency can be realized. In addition to CaCO3, inorganic materials with large particle sizes such as BaSO4, Al2O3, and silicon beads having a similar structure can also be utilized. Furthermore, the optical Of course, such a pattern formation design can be variously deformed considering the light efficiency, intensity, and light-shielding rate. Or, in a sequential lamination structure, a light-shielding pattern of a metal pattern is formed in the central layer, and diffusion patterns are formed on the upper and lower parts thereof, respectively, to form a triple structure. In such a triple structure, it is possible to form the above-mentioned substances. As a desirable example, one of the diffusion patterns is formed using TiO2 with excellent refractive index, and CaCO3 with excellent light stability and color sense is used together with TiO2 to form the other diffusion pattern, and Al with excellent concealment is used to form a light-shielding pattern. The triple structure can ensure the light efficiency and uniformity. In particular, CaCO3 functions to block the exposure of yellow light, and finally realizes white light, so that more stable light efficiency can be realized. In addition to CaCO3, inorganic materials with large particle sizes such as BaSO4, Al2O3, and silicon beads having a similar structure can also be utilized. Furthermore, the optical Of course, such a pattern formation design can be variously deformed considering the light efficiency, intensity, and light-shielding rate. Or, in a sequential lamination structure, a light-shielding pattern of a metal pattern is formed in the central layer, and diffusion patterns are formed on the upper and lower parts thereof, respectively, to form a triple structure. In such a triple structure, it is possible to form the above-mentioned substances. As a desirable example, one of the diffusion patterns is formed using TiO2 with excellent refractive index, and CaCO3 with excellent light stability and color sense is used together with TiO2 to form the other diffusion pattern, and Al with excellent concealment is used to form a light-shielding pattern. The triple structure can ensure the light efficiency and uniformity. In particular, CaCO3 functions to block the exposure of yellow light, and finally realizes white light, so that more stable light efficiency can be realized. In addition to CaCO3, inorganic materials with large particle sizes such as BaSO4, Al2O3, and silicon beads having a similar structure can also be utilized. Furthermore, the optical Of course, such a pattern formation design can be variously deformed considering the light efficiency, intensity, and light-shielding rate. Or, in a sequential lamination structure, a light-shielding pattern of a metal pattern is formed in the central layer, and diffusion patterns are formed on the upper and lower parts thereof, respectively, to form a triple structure. In such a triple structure, it is possible to form the above-mentioned substances. As a desirable example, one of the diffusion patterns is formed using TiO2 with excellent refractive index, and CaCO3 with excellent light stability and color sense is used together with TiO2 to form the other diffusion pattern, and Al with excellent concealment is used to form a light-shielding pattern. The triple structure can ensure the light efficiency and uniformity. In particular, CaCO3 functions to block the exposure of yellow light, and finally realizes white light, so that more stable light efficiency can be realized. In addition to CaCO3, inorganic materials with large particle sizes such as BaSO4, Al2O3, and silicon beads having a similar structure can also be utilized. Furthermore, the optical Of course, such a pattern formation design can be variously deformed considering the light efficiency, intensity, and light-shielding rate. Or, in a sequential lamination structure, a light-shielding pattern of a metal pattern is formed in the central layer, and diffusion patterns are formed on the upper and lower parts thereof, respectively, to form a triple structure. In such a triple structure, it is possible to form the above-mentioned substances. As a desirable example, one of the diffusion patterns is formed using TiO2 with excellent refractive index, and CaCO3 with excellent light stability and color sense is used together with TiO2 to form the other diffusion pattern, and Al with excellent concealment is used to form a light-shielding pattern. The pattern is formed by adjusting the pattern density so that the pattern density decreases as the distance from the emission direction of the LED light source increases. Adjusting the pattern density is desirable in terms of light efficiency.

[0054] Note that the present invention can be further formed to include a spacer module disposed between the optical pattern layer 150 and the diffusion plate 170. It can be further formed to include a spacer module disposed between the optical pattern layer 150 and the diffusion plate 170.

[0055] FIG. 10 is a diagram showing an example of forming a spacer module disposed between the optical pattern layer 150 and the diffusion plate 170 shown in FIG. 8. That is, in the configuration of the lighting device according to the present invention, a structure including a separation layer (third separation region) 160 can be further included between the optical pattern layer 150 and the diffusion plate 170. Due to the presence of the third region 161, the light emitted from the light source can be diffused, and the effect of improving the uniformity of the light can be realized. Note that in order to minimize the variation in the light transmitted through the resin layer 140 and the optical pattern layer 150, the thickness of the third separation region 160 is preferably formed in the range of 0.01 to 2 mm.

[0056] That is, in the configuration of the lighting device according to the present invention, a structure including a separation layer (third separation region) 160 can be further included between the optical pattern layer 150 and the diffusion plate 170. Due to the presence of the third region 161, the light emitted from the light source can be diffused, and the effect of improving the uniformity of the light can be realized. Note that in order to minimize the variation in the light transmitted through the resin layer 140 and the optical pattern layer 150, the thickness of the third separation region 160 is preferably formed in the range of 0.01 to 2 mm. That is, in the configuration of the lighting device according to the present invention, a structure including a separation layer (third separation region) 160 can be further included between the optical pattern layer 150 and the diffusion plate 170. Due to the presence of the third region 161, the light emitted from the light source can be diffused, and the effect of improving the uniformity of the light can be realized. Note that in order to minimize the variation in the light transmitted through the resin layer 140 and the optical pattern layer 150, the thickness of the third separation region 160 is preferably formed in the range of 0.01 to 2 mm. That is, in the configuration of the lighting device according to the present invention, a structure including a separation layer (third separation region) 160 can be further included between the optical pattern layer 150 and the diffusion plate 170. Due to the presence of the third region 161, the light emitted from the light source can be diffused, and the effect of improving the uniformity of the light can be realized. Note that in order to minimize the variation in the light transmitted through the resin layer 140 and the optical pattern layer 150, the thickness of the third separation region 160 is preferably formed in the range of 0.01 to 2 mm. That is, in the configuration of the lighting device according to the present invention, a structure including a separation layer (third separation region) 160 can be further included between the optical pattern layer 150 and the diffusion plate 170. Due to the presence of the third region 161, the light emitted from the light source can be diffused, and the effect of improving the uniformity of the light can be realized. Note that in order to minimize the variation in the light transmitted through the resin layer 140 and the optical pattern layer 150, the thickness of the third separation region 160 is preferably formed in the range of 0.01 to 2 mm. That is, in the configuration of the lighting device according to the present invention, a structure including a separation layer (third separation region) 160 can be further included between the optical pattern layer 150 and the diffusion plate 170. Due to the presence of the third region 161, the light emitted from the light source can be diffused, and the effect of improving the uniformity of the light can be realized. Note that in order to minimize the variation in the light transmitted through the resin layer 140 and the optical pattern layer 150, the thickness of the third separation region 160 is preferably formed in the range of 0.01 to 2 mm. That is, in the configuration of the lighting device according to the present invention, a structure including a separation layer (third separation region) 160 can be further included between the optical pattern layer 150 and the diffusion plate 170. Due to the presence of the third region 161, the light emitted from the light source can be diffused, and the effect of improving the uniformity of the light can be realized. Note that in order to minimize the variation in the light transmitted through the resin layer 140 and the optical pattern layer 150, the thickness of the third separation region 160 is preferably formed in the range of 0.01 to 2 mm.

[0057] The third separation region 160 can be formed in a structure capable of forming a separation layer below the diffusion plate. The "spacer module" is defined to include the third separation region formed by such a structure. The third separation region 160 can be formed in a structure capable of forming a separation layer below the diffusion plate. The "spacer module" is defined to include the third separation region formed by such a structure. The third separation region 160 can be formed in a structure capable of forming a separation layer below the diffusion plate. The "spacer module" is defined to include the third separation region formed by such a structure.

[0058] The spacer module includes all configurations such as forming a separation region (separation layer) by processing the diffusion plate itself, or forming a separate structure below the diffusion plate to form a separation region. The spacer module includes all configurations such as forming a separation region (separation layer) by processing the diffusion plate itself, or forming a separate structure below the diffusion plate to form a separation region.

[0059] That is, as shown in FIG. 10(a), a spacer 171 is formed below the diffusion plate 170 to form a third separation region. Form the separation region 160, or as shown in (b), pattern the lower part of the diffusion plate and form a bridge 172 that is in close contact with the lower layer to form the third separation region (air area) 160. It can be formed by a structure of the bridge 172.

[0060] Such an integrated structure can be variously deformed according to the above-described patterned shape, that is, the shape of the pattern that forms the separation region, and it is obvious that the shape of the bridge can also be variously deformed, which is also included in the gist of the present invention. Further, in addition to the method of patterning the lower surface of the diffusion plate itself as in the structure shown in (c), it can also be formed by a structure that forms the separation region 160 using a separate structure. Of course, the illustrated structure exemplifies a structure including the bridge 174 as a spacer member, but the gist of the present invention includes such a method, and it goes without saying that various modifications capable of forming a separation layer at the lower part of the diffusion plate also fall within the gist of the present invention.

[0061] As shown in (d), in addition to making the separation layer a single layer as in the configuration of (b) where the diffusion plate itself is patterned or the configuration of (c) using a separate structure, it is also possible to form the separation regions 160 and 161 with a plurality of layers by adopting structures 175 and 176 capable of forming independent separation layers.

[0062] It goes without saying that the lighting device according to the present invention can be applied to various lamp devices that require lighting, such as vehicle lamps, household lighting devices, and industrial lighting devices. Vehicle lamps can also be applied to headlamps, interior lighting, taillights, and the like. An example of the application of the lighting device according to the present invention described above to an LCD will be given below in terms of the following configuration and operation. ​​​​​​​​​​​​​​ The explanation is as follows. In order to reduce the number of light sources, the LED light source 130 according to the present invention can be arranged by adopting side-emitting LEDs. Referring to FIG. 8, light is emitted laterally from the side-emitting type LED 130, and the emitted light is reflected and diffused by the resin layer 140 formed instead of the conventional light guide plate, and the optical pattern layer 150 prevents light concentration and the light variation can be minimized by the third separation region formed below the diffusion plate. In particular, due to the presence of the reflection unit 120 according to the present invention disposed between the resin layer 140 and the printed circuit board 110, the reflectivity can be further improved, the light efficiency can be maximized, and the effect of improving the brightness can be realized. In particular, in the case of the reflection unit 120 according to the present invention, the reflectivity can be adjusted by variously deforming the design of forming the separation region by patterning the adhesive material layer, and there is also an effect that the reflectivity and color realization can be adjusted according to the material and type of the patterned adhesive material. Furthermore, the reflectivity can also be adjusted according to the optical characteristics and thickness of the second reflection member 122. To sum up, the light emitted by the reflection unit 120 and the reflection pattern 124 according to the present invention has a higher reflection efficiency and can guide the light forward. In this way, the light passing through the resin layer 140 passes through the optical pattern 151 formed on the optical pattern layer 150 and undergoes a process of diffusion or light shielding, and the light purified in this way can have its optical characteristics purified again by the separation module formed below the diffusion plate to enhance the uniformity, and then enters the LCD panel as white light through optical sheets such as the prism sheet 180 and the DBEF 190 added later.

[0063] In summary, the light emitted by the reflection unit 120 and the reflection pattern 124 according to the present invention has an even higher reflection efficiency and can guide the light forward. In this way, the light passing through the resin layer 140 passes through the optical pattern 151 formed on the optical pattern layer 150 and undergoes a process of diffusion or light shielding, and the light purified in this way can have its optical characteristics purified again by the separation module formed below the diffusion plate to enhance the uniformity, and then enters the LCD panel as white light through optical sheets such as the prism sheet 180 and the DBEF 190 added later. and is diffused or shielded, and after passing through such a process, the light purified in this way can have its optical characteristics purified again by the separation module formed below the diffusion plate to enhance the uniformity, and then enters the LCD panel as white light through optical sheets such as the prism sheet 180 and the DBEF 190 added later. After passing through the resin layer 140, the light passes through the optical pattern 151 formed on the optical pattern layer 150 and is diffused or shielded, and then enters the LCD panel as white light through optical sheets such as the prism sheet 180 and the DBEF 190 added later.

[0064] The above example has been described by taking the application of this lighting device to an LCD as an example. However, as described above, it can be variously modified and applied to indoor lighting, vehicle lamp devices, etc. In this way, in the case of the lighting device according to the present invention, not only can the reflection efficiency be maximized by the structure having the separation region of the reflection unit, but also the structure of the light guide plate can be removed, and side surface light-emitting type LEDs can be adopted as the light supply source, and the light is diffused and reflected by the resin layer to guide the light, so that the thickness can be reduced and the number of light sources can be reduced. On the other hand, the problems of luminance reduction and uniformity due to the reduction of the light source can be adjusted by providing the reflection pattern, the light shielding pattern, and the separation region of the separation module, so that the optical characteristics can be improved.

[0065] As described above, in the case of the lighting device according to the present invention, not only can the reflection efficiency be maximized by the structure having the separation region of the reflection unit, but also the structure of the light guide plate can be removed, and side surface light-emitting type LEDs can be adopted as the light supply source, and the light is diffused and reflected by the resin layer to guide the light, so that the thickness can be reduced and the number of light sources can be reduced. On the other hand, the problems of luminance reduction and uniformity due to the reduction of the light source can be adjusted by providing the reflection pattern, the light shielding pattern, and the separation region of the separation module, so that the optical characteristics can be improved. As described above, in the case of the lighting device according to the present invention, not only can the reflection efficiency be maximized by the structure having the separation region of the reflection unit, but also the structure of the light guide plate can be removed, and side surface light-emitting type LEDs can be adopted as the light supply source, and the light is diffused and reflected by the resin layer to guide the light, so that the thickness can be reduced and the number of light sources can be reduced. On the other hand, the problems of luminance reduction and uniformity due to the reduction of the light source can be adjusted by providing the reflection pattern, the light shielding pattern, and the separation region of the separation module, so that the optical characteristics can be improved. As described above, in the case of the lighting device according to the present invention, not only can the reflection efficiency be maximized by the structure having the separation region of the reflection unit, but also the structure of the light guide plate can be removed, and side surface light-emitting type LEDs can be adopted as the light supply source, and the light is diffused and reflected by the resin layer to guide the light, so that the thickness can be reduced and the number of light sources can be reduced. On the other hand, the problems of luminance reduction and uniformity due to the reduction of the light source can be adjusted by providing the reflection pattern, the light shielding pattern, and the separation region of the separation module, so that the optical characteristics can be improved. As described above, in the case of the lighting device according to the present invention, not only can the reflection efficiency be maximized by the structure having the separation region of the reflection unit, but also the structure of the light guide plate can be removed, and side surface light-emitting type LEDs can be adopted as the light supply source, and the light is diffused and reflected by the resin layer to guide the light, so that the thickness can be reduced and the number of light sources can be reduced. On the other hand, the problems of luminance reduction and uniformity due to the reduction of the light source can be adjusted by providing the reflection pattern, the light shielding pattern, and the separation region of the separation module, so that the optical characteristics can be improved. As described above, in the case of the lighting device according to the present invention, not only can the reflection efficiency be maximized by the structure having the separation region of the reflection unit, but also the structure of the light guide plate can be removed, and side surface light-emitting type LEDs can be adopted as the light supply source, and the light is diffused and reflected by the resin layer to guide the light, so that the thickness can be reduced and the number of light sources can be reduced. On the other hand, the problems of luminance reduction and uniformity due to the reduction of the light source can be adjusted by providing the reflection pattern, the light shielding pattern, and the separation region of the separation module, so that the optical characteristics can be improved. As described above, in the case of the lighting device according to the present invention, not only can the reflection efficiency be maximized by the structure having the separation region of the reflection unit, but also the structure of the light guide plate can be removed, and side surface light-emitting type LEDs can be adopted as the light supply source, and the light is diffused and reflected by the resin layer to guide the light, so that the thickness can be reduced and the number of light sources can be reduced. On the other hand, the problems of luminance reduction and uniformity due to the reduction of the light source can be adjusted by providing the reflection pattern, the light shielding pattern, and the separation region of the separation module, so that the optical characteristics can be improved.

[0066] In the above detailed description of the present invention, specific embodiments have been described. However, various modifications are possible within the scope not departing from the category of the present invention. The technical idea of the present invention should not be limited to the embodiments of the present invention, but should be defined not only by the claims but also by those equivalent to the claims. In the above detailed description of the present invention, specific embodiments have been described. However, various modifications are possible within the scope not departing from the category of the present invention. The technical idea of the present invention should not be limited to the embodiments of the present invention, but should be defined not only by the claims but also by those equivalent to the claims. In the above detailed description of the present invention, specific embodiments have been described. However, various modifications are possible within the scope not departing from the category of the present invention. The technical idea of the present invention should not be limited to the embodiments of the present invention, but should be defined not only by the claims but also by those equivalent to the claims. In the above detailed description of the present invention, specific embodiments have been described. However, various modifications are possible within the scope not departing from the category of the present invention. The technical idea of the present invention should not be limited to the embodiments of the present invention, but should be defined not only by the claims but also by those equivalent to the claims.

Industrial Applicability

[0067] The lighting device according to the present invention is applicable to various lamp devices that require lighting, such as vehicle lamps, household lighting devices, and industrial lighting devices. Vehicle lamps are of course also applicable to headlights, interior lighting, taillights, etc. The lighting device according to the present invention is applicable to various lamp devices that require lighting, such as vehicle lamps, household lighting devices, and industrial lighting devices. Vehicle lamps are of course also applicable to headlights, interior lighting, taillights, etc. The lighting device according to the present invention is applicable to various lamp devices that require lighting, such as vehicle lamps, household lighting devices, and industrial lighting devices. Vehicle lamps are of course also applicable to headlights, interior lighting, taillights, etc.

Claims

1. substrate; a reflecting unit disposed on the substrate; A plurality of light sources disposed on the substrate; and a light guide member disposed on the reflection unit and covering the plurality of light sources; The reflection unit includes a first reflection member disposed on the substrate; a second reflecting member disposed on the first reflecting member; and a spacing member disposed between the first reflecting member and the second reflecting member, the second reflecting member is spaced from the first reflecting member by the spacing member, A region of the light source passes through the first reflecting member, the separating member, and the second reflecting member. contacting the light guide member; The spacing member includes a plurality of unit spacing members each having a first spacing region.

2. substrate; a plurality of light sources disposed on the substrate; A reflective unit disposed on the substrate; and a light guide member disposed on the reflection unit and covering the plurality of light sources; The reflection unit includes a first reflection member disposed on the substrate; a second reflecting member disposed on the first reflecting member; A complex having a polygonal cross section is disposed between the first reflecting member and the second reflecting member. a number of first spaced regions; and a plurality of holes formed from the first reflecting member to the second reflecting member; A lighting device, wherein a top surface and a side surface of the light source are in contact with the light guide member.

3. an optical pattern layer disposed on the light guide member; The optical pattern layer includes a first substrate disposed on the optical guide member, and a first substrate and a first A second substrate disposed on the substrate and a plurality of electrodes disposed between the first substrate and the second substrate.

3. The lighting device according to claim 1 or 2, comprising an optical pattern and an adhesive pattern layer of 。

4. The optical pattern layer is formed such that the optical pattern and the adhesive pattern layer are spaced apart from each other. The illumination device of claim 3 , further comprising a second isolation region formed around the periphery of the optical pattern.

5. The optical pattern layer has a space between the optical pattern and the first substrate.

5. The lighting device according to claim 3 or 4.

6. Any one of claims 3 to 5, wherein the optical pattern is disposed on the lower surface of the second substrate.

13. The lighting device according to claim 1 .

7. the optical pattern overlaps with the light source in a direction perpendicular to the substrate. The lighting device according to any one of claims 3 to 6.

8. The optical pattern is formed by forming a plurality of layers having different patterns in a direction perpendicular to the substrate. The lighting device according to any one of claims 3 to 7, wherein the lighting device is formed on the substrate.

9. The reflection unit includes a plurality of reflectors disposed between the first reflector and the second reflector. a unit spacing member, each of said plurality of first spaced regions is formed by said unit spacer member; 3. The lighting device according to claim 2.

10. The light-transmitting member according to claim 1 or claim 9, wherein the cross section of the unit spacing member has a polygonal shape. Lighting device.

Images