Lighting equipment

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] The present invention relates to a lighting device that uses an LED as a light source, and more particularly to a thin-type lighting device. As lighting with a structure that is suitable for interior lighting, vehicle lamps, backlight units, and liquid crystal display devices, This relates to the structure of an applicable lighting device. [Background technology]

[0002] Devices that realize illumination by guiding light emitted from a light source include lighting lamps, vehicle lamps, This type of lighting equipment is required for various applications such as LCD displays. The most important technologies are recognized as thin structures and structures that can improve light efficiency. It is being done.

[0003] A liquid crystal display device will be described as an example to which such an illumination device is applied.

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

[0005] The light (L) incident on the light guide plate 30 from the LED 10 is guided by the fine After being reflected upward by the reflective pattern or reflective sheet 40 and emitted from the light guide plate 30 The light guide plate 30 provides light to the LCD panel 50 above it.

[0006] Such an illumination device includes a light guide plate 30 and an LCD panel 50 as shown in FIG. There are a plurality of optical sheets between them, such as a diffusion sheet 31, prism sheets 32 and 33, and a protection sheet 34. It can be formed in a structure in which a further conductor is added.

[0007] Therefore, such a light guide plate is basically used as an essential part of such a lighting device. However, this places a limit on how thin the product can be made due to the thickness of the light guide plate itself, and In the case of a multi-color lighting device, this causes a problem of degraded image quality. Summary of the Invention [Problem to be solved by the invention]

[0008] The embodiments of the present invention have been made to solve the above-mentioned problems, and are The reflecting unit has a spaced area on the surface of the substrate, which maximizes the improvement of brightness along with the light reflectance. This allows for increased brightness without increasing the thickness of the lighting device or the number of light sources, and the separation area The pattern design of the spacer maximizes light adjustment and reflection efficiency. It is possible to provide a lighting device that can

[0009] The lighting device according to the embodiment of the present invention is a light emitting diode (LED) which is an essential component in the structure of a general lighting device. By removing the light plate and using a film-type resin layer to form a structure that guides the light source, This allows the number of light sources to be reduced, making the overall thickness of the lighting device thinner and improving product design. This allows us to provide highly reliable products that can increase the degree of freedom in design. [Means for solving the problem]

[0010] As a means for solving the above-mentioned problems, the lighting device according to the embodiment of the present invention is A plurality of LED light sources formed on a circuit board and a structure in which the LED light sources penetrate the a reflective unit laminated on the printed circuit board, the reflective unit Reflective material containing metal material that adheres to the surface of the circuit board or white PET (white pol a first reflecting member made of ethylen terephthalate; and a second reflective member made of a transparent material, the second reflective member being spaced from the first reflective member and forming the spaced area. do.

[0011] This allows the surface of the printed circuit board to be provided with a reflective unit including a metal reflective layer, and the light reflection The reflectance and brightness are maximized, and the reflective unit is separated by white PET. By realizing this area, the improvement of brightness as well as the reflectivity of light is maximized, and the thickness and light The brightness can be increased without increasing the number of light sources, and the separation member (spacer) forming the separation region can be The pattern design of the lens maximizes light adjustment and reflection efficiency. [Effects of the Invention]

[0012] According to the present invention, a metal reflector is provided on the surface of a printed circuit board, the metal reflector being provided with a reflecting unit having a spaced apart area. By using a material or white PET, the brightness as well as the light reflectance can be improved. This maximizes the improvement and increases brightness without increasing the thickness of the lighting device or the number of light sources. The pattern design of the spacer that forms the separation area allows for light adjustment and reflection efficiency. It also has the effect of maximizing the

[0013] In addition, the present invention provides a method for forming an optical pattern layer having an optical pattern, and applying an adhesive material to the pattern. By providing a separation area by applying an adhesive pattern layer, holes that occur in the light-shielding pattern area can be prevented. It can eliminate the occurrence of hot spots and dark areas, and improve the reliability between the adhesive and the parts being bonded. This ensures the reliability of the lighting device and eliminates significant differences in optical characteristics. This has the advantage that precise alignment between the

[0014] In addition, a spacer module having a spacer layer formed on the diffusion plate or using a separate member may be used. By providing a lens, the optical characteristics of the lighting device, such as diffusion and light uniformity, can be improved. It has the effect of

[0015] In addition, the light guide plate, which is an essential part of the structure of a general lighting device, has been removed, and a film-type light By using a silicon layer to form a structure for guiding the light sources, the number of light sources can be reduced. This has the effect of reducing the overall thickness of the lighting device and increasing the degree of freedom in product design. There is fruit.

[0016] In particular, by mounting side-mounted LEDs directly underneath the panel, the number of light sources is significantly reduced, while the optical It can maintain its characteristics and can be applied to flexible display structures by removing the light guide plate. It is possible to provide a reflective member having a reflective pattern on a resin layer and a diffusion plate having a separation layer. This also has the effect of ensuring stable light-emitting characteristics. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a conceptual diagram showing the structure of a conventional lighting device. [Figure 2] FIG. 1 is a conceptual diagram showing the structure of a conventional lighting device. [Figure 3] 1 is a conceptual cross-sectional view showing a main part of a lighting device according to the present invention. [Figure 4] 4 is a diagram showing an example of a separating member constituting a reflecting unit included in the lighting device according to the present invention shown in FIG. 3. FIG. [Figure 5] FIG. 2 is a conceptual diagram showing an example of a reflection unit according to the present invention. [Figure 6] 10 is a table showing the results of a comparison of the efficiency of the reflector unit according to the present invention. [Figure 7]10A and 10B are diagrams showing another embodiment of the lighting device according to the present invention. [Figure 8] 10A and 10B are diagrams showing still another embodiment of the lighting device according to the present invention. [Figure 9] 1A to 1C are diagrams showing various examples realized in the optical pattern layer according to the present invention. [Figure 10] 1A to 1C are diagrams showing various examples of the diffuser plate according to the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0018] The configuration and operation of the present invention will be specifically described below with reference to the accompanying drawings. In the description with reference to the drawings, the same components are denoted by the same reference numerals regardless of the drawing numbers. The terms "1st," "2nd," etc. are used to describe various components. However, the above components should not be limited by the above terms. is used only to distinguish one component from another.

[0019] The present invention provides a lighting device that uses an LED as a light source, and a separation area is provided below the LED light source. The gist of the invention is to improve the reflectivity and brightness by arranging a reflective unit equipped with the In the conventional lighting device structure, the adhesive material is patterned (adhesive pattern layer) to form the separation area. The optical pattern layer or the diffusion plate is patterned, or a separate member is used to provide a separation layer. By providing a separation module with a light guide plate, the optical characteristics are improved. By forming it with a resin layer, the overall thickness of the lighting device is significantly reduced, while the light source The gist of the present invention is to provide a structure that can reduce the number of components. (First Example) 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 is formed on a printed circuit board 110. The printed circuit board 110 is provided with a plurality of LED light sources 130. The reflective unit 1 is laminated on the printed circuit board 110 in a structure through which the light source 130 penetrates. In particular, in this case, the reflecting unit 120 is provided with an interval (ai The separated area A1 is characterized by including an area A1 where light is emitted from the light source 130. The reflection efficiency of the light can be improved to maximize the brightness.

[0021] In particular, the reflecting unit 120 is a first reflecting unit that is in close contact with the surface of the printed circuit board 110. A reflective member 121 and a transparent member spaced apart from the first reflective member 121 to form the separated area A1. The first and second reflecting members 122 may be made of a transparent material. The materials 121 and 122 are laminated on the printed circuit board and formed on the reflecting member. The LED light source 130 protrudes to the outside through the hole.

[0022] The separation area A1 is formed by attaching the first and second reflecting members 121 and 122 to each other with a separate adhesive. It is possible to form the structure in which the components are integrally pressed together without using other components such as the As shown in the figure, the air is contained in the spacer 123 by a spacer such as a separate adhesive member. The first and second reflecting members 121 and 122 are spaced apart to form the partition area A1. It is also possible to form

[0023] In this case, the first reflecting member 121 is made of a reflective material that reflects light, that is, a metal such as Ag. The second reflecting member 122 may be a film having a metal layer formed thereon. The transparent member 122 is transparent so that the light emitted from the first reflecting member 122 is transmitted to the surface of the first reflecting member 122 and is reflected again. It is more preferable to use a film made of such a material. 121 is preferably made of white PET as a reflective structure that reflects light. In the specific reflective unit of the present invention, the first reflective member is made of a general metallic reflective material. It is possible to form a layer (such as Ag) on ​​the back of the display, but to maximize brightness improvement, white PET is used. In realizing the reflective unit, it is recommended to use white PET to form the first reflective member. When this technology is used, it is possible to achieve an improvement in brightness of approximately 30% compared to conventional technology.

[0024] In particular, the light emitted from the light source 130 passes through the first reflecting member and is reflected again by the second reflecting member. In addition to the reflection, a reflective pattern 124 is printed in white on the surface of the second reflective member 122. It is more desirable to provide the above structure to further promote the dispersion of light and improve brightness. The reflecting pattern 130 is provided to significantly improve the reflectance of light, and the reflecting pattern is Any one of TiO2, CaCO3, BaSO4, Al2O3, silicon, and PS It can be printed with reflective inks including

[0025] In particular, the light source of the lighting device according to the present invention can be applied to various types of light sources, and is particularly desirable. Alternatively, a side-emitting LED may be used, in which case the reflection pattern is It is desirable to form the LED light source in the light emission direction, particularly in the direction away from the LED light source. The more the pattern is arranged, the higher the pattern density. When D is used, there is an advantage that the number of light sources can be significantly reduced.

[0026] FIG. 4 is a diagram showing a separation that constitutes a reflecting unit included in the lighting device according to the present invention shown in FIG. FIG. 10 is a diagram illustrating an example of a member.

[0027] That is, the spacing member according to the present invention has a space for simply spacing the first reflecting member and the second reflecting member. The separation region is formed by performing a general separation function such as a spacer member or an adhesive spacer member. However, it is more desirable to efficiently arrange the separation regions and to improve adhesion efficiency. To improve the efficiency, the spacing members may be arranged uniformly or randomly in a patterned structure as shown in FIG. The dam can be formed by patterning.

[0028] As shown in FIG. 4, the spacing member 123 is a unit spacing member 123 having a cavity formed therein. a are arranged inside the unit spacing member 123a, and the first spacing portion 12 3b can be formed in a two-dimensional or three-dimensional structure. The cross section of the separating member 123a can be formed in various shapes such as polygonal, circular, elliptical, etc. As shown in the figure, a plurality of each unit spacing member 123a are closely arranged. In addition to the structure, the first spacing members inside the unit spacing members 123a are arranged in an irregular structure. The second separation portion 123b is a space between the respective separation members 123a. It is also possible to form it from c.

[0029] 5 is a diagram showing a specific example of the reflection unit shown in FIGS. 3 and 4. As described above, the reflecting unit 120 is in close contact with the surface of the printed circuit board. A first reflecting member 121 and a second reflecting member disposed opposite to and spaced from the first reflecting member. In particular, the second reflecting member 122 is made of a transparent material such as PET. The first and second reflecting members 121 and 122 can be attached by patterning the adhesive material. 2 is provided with a separating member 123 to form a separating region.

[0030] In particular, in order to maximize the reflection efficiency, the first reflecting member 121 is bonded to a metal reflecting layer 125. The optical film 126 is adhered to the optical fiber 120 via a primer (T1, T2). The optical film 126 is also deposited on the release film 128 via an adhesive substance (PSA) 127. It can be formed in a layered structure.

[0031] In the structure shown in FIG. 5, unlike the first reflecting member embodiment, the first reflecting member 121 can be formed using white PET as a reflective structure to reflect light.

[0032] FIG. 6 shows the improvement in brightness of the lighting device when the structure of the reflection unit according to the present invention is realized. This is a result table for comparing the degree of chromaticity (CIE X and CIE Y are chromaticity tables). The illustrated table shows that (A) is made of Ag on the surface of the printed circuit board in the structure shown in Figure 3. (B) is a graph showing the luminance of a single reflecting member formed on the substrate. The structure of the reflective unit, i.e., the adhesive pattern material is formed from silicon to form the pattern shown in FIG. When the first reflecting member is an Ag film, compared to the conventional (A) structure, The resulting brightness improvement was measured.

[0033] Also, (C) differs from (B) in that the first reflecting member is made of white PET, which is different from the conventional The results of the luminance improvement were measured in comparison with the structure (A).

[0034] The measurement results show that the brightness of (A) is 6605 nits. The structure had a brightness of 7468 nits, which was a result of an improvement in brightness of about 13%. In the case of the reflective unit formed with white PET (C), the brightness was 8472 nits. The brightness is increased by 28.6% compared to (A). When using white PET with a structure (separated area) that is thinned, brightness is maximized. This can be achieved.

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

[0036] That is, the second embodiment of the present invention is the same as the first embodiment except that the printed circuit board The optical guide member is a resin. Such a resin layer is used in the lighting device of a liquid crystal display device, etc. This corresponds to a configuration that replaces a plate-shaped light guide plate, and It will perform the function of guiding the user in the right direction.

[0037] Referring to FIG. 7, the lighting device according to the present invention is 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 light guide member is realized by a resin layer will be described. do. That is, the resin layer 140 is laminated in a structure surrounding the LED light source 130. , the function of dispersing the light from the light source emitting in the side direction is achieved. The resin layer 140 functions as a plate.

[0038] The resin layer can be made of any material that can diffuse light, without any particular restrictions. As an example, the resin layer according to one embodiment of the present invention may be made of urethane acrylate. Resins made mainly from synthetic oligomers can be used. A mixture of acrylate 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 contain 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 upwards.

[0040] This, together with the above-described reflecting unit 120 according to the present invention, further promotes the reflecting function. Therefore, the existence 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. This will give it the versatility to be applied to flexible displays as well.

[0041] (Third Example) This structure is an improvement over the structure of the second embodiment described above, and promotes light diffusion on the resin layer. The structure of the lighting device of the third embodiment in which an optical pattern layer is formed will be described.

[0042] That is, referring to FIG. 8, the lighting device according to the present invention is a lighting device having the resin layer 14 shown in FIG. 1. The structure is formed by an optical pattern layer 150 disposed on top of the optical pattern layer 151. It can be achieved.

[0043] In particular, the optical pattern layer 150 has a second spaced region surrounding the periphery of the optical pattern. The adhesive pattern layer 153 may be formed on the adhesive layer 152. The patterned layer 153 has a pattern of a predetermined shape on the optical pattern 151. A space (second isolated region) is formed in the gap, and an adhesive material is applied to the other portions.

[0044] That is, in the illustrated structure, the arrangement of the optical pattern layer 150 and the adhesive pattern layer 153 is In terms of positional relationship, the optical pattern layer 150 is a first substrate 150 having the optical pattern therein. A and a second substrate 150B are provided, and the adhesive pattern layer 153 is formed around the periphery of the light-shielding pattern. The second substrate 150A and the second substrate 150B are coated on the area other than the second isolated area 152 surrounding the first substrate 150A. The substrate 150B is attached.

[0045] That is, the optical pattern 151 prevents the light emitted from the LED light source 130 from concentrating. For this purpose, the optical pattern 151 and the LED light source 152 can be formed as a light-shielding pattern. Alignment is required between the 30 and the 40. After alignment, the 40 is attached to secure the fixation force. The adhesive is then used to bond the pieces together.

[0046] The first substrate 150A and the second substrate 150B are made of a material with excellent light transmittance. For example, PET can be used. In this case, the first substrate 150A The optical pattern 151 disposed between the first substrate 150B and the second substrate 150C is basically a pattern of light emitted from an LED light source. The first substrate 150A or the second substrate 150B functions to prevent the emitted light from concentrating. 0B by light-shielding printing, and has a structure that surrounds the periphery of the light-shielding pattern. The alignment is achieved by bonding the two substrates together via an adhesive layer coated with an adhesive material. The adhesive structure of the first substrate 150A and the second substrate 150B fixes the printed light blocking pattern 151. The adhesive layer further performs the function of fixing the adhesive. Adhesive, UV curable PSA type material can be used.

[0047] When the adhesive pattern layer 153 is formed and adhered, the pattern forming the second spaced region 152 When adhesive is applied with a tape structure, the adhesive material overlaps with the light-shielding pattern, creating a strong hot spot. It can prevent the occurrence of hot spots or dark areas, and the existence of an air layer This makes it possible to improve the uniformity of the light.

[0048] The lighting device according to the present invention having the above-described structure has, in addition to the above-described configuration, the resin layer 140 A diffusion plate 170 may be provided on the upper portion of the optical pattern layer 15. 10. The device may further include a separation module 160 having a third separation region 161 between the first and second separation modules 160 and 160. In addition, a prism sheet, a protection sheet, etc. are additionally provided on the upper part of the diffusion plate.

[0049] FIG. 9 shows the optical pattern 151, the adhesive pattern layer 153, and the resulting 10 is a diagram conceptually illustrating the configuration of a second isolated region 152. FIG.

[0050] The optical pattern 151 is printed in a specific pattern on the first substrate. When the adhesive pattern layer 153 is formed using an adhesive material in the structure, a certain separation space is formed. The second substrate 150B is attached to the insulating layer 150B. This structure is defined as a 'second isolated region'. The planar shape of the first isolated region 152 may be any of various shapes such as a circle, an ellipse, a rectangle, a square, a polygon, etc. The adhesive pattern layer can be formed into any shape. These can be formed using modified PSA type materials.

[0051] In addition, the optical pattern 151 may have poor optical characteristics due to excessively strong light intensity or may be yellow. To prevent yellowish light from being emitted, a certain amount of light is blocked. It is desirable to form a light-shielding pattern so that the light is not concentrated. Light-blocking patterns can be printed using ink.

[0052] The optical pattern does not have the function of completely blocking light, but rather has the function of partially blocking and diffusing light. It is formed so that the degree of light blocking and diffusion can be adjusted with one optical pattern. More preferably, the optical pattern according to the present invention is a composite pattern overlap. It can also be formed by a superimposed printing structure. This refers to a structure in which another pattern shape is printed on the part.

[0053] For example, the optical pattern 151 is formed by disposing a T-shaped pattern on the lower surface of the polymer film in the light emission direction. One or more selected from the group consisting of iO2, CaCO3, BaSo4, Al2O3, and silicon The diffusion pattern formed using a light-shielding ink containing the above material and Al or Al and TiO2 The light-shielding ink containing the mixed material can be used to form a light-shielding pattern by superimposing the light-shielding ink. That is, after a diffusion pattern is printed in white on the surface of a polymer film, It is also possible to form a light-shielding pattern or to form a double structure in the reverse order. Of course, the design of such pattern formation varies in various ways, taking into consideration the efficiency, intensity, and shading rate of light. Alternatively, a metal pattern can be formed as a light shielding layer in the center layer of a sequentially laminated structure. A triple structure is formed by forming a pattern and then forming diffusion patterns on the top and bottom of it. It is also possible to form such a triple structure by selecting the above-mentioned materials. A desirable example is a diffusion pattern using TiO2, which has an excellent refractive index. CaCO3, which has excellent light stability and color, is used together with TiO2 to form one of the following: A triple layer structure that forms a diffusion pattern using SiO2 and a light-shielding pattern using Al, which has excellent hiding power. This ensures light efficiency and uniformity. In particular, CaCO3 blocks yellow light exposure. The function of cutting off the light ultimately achieves white light, resulting in a more stable light In addition to CaCO3, particles such as BaSO4, Al2O3, and silicon beads can be used. It is also possible to utilize inorganic materials with large molecular size and similar structures. The pattern density decreases as it moves away from the direction of the LED light source. It is desirable to adjust the pattern density in terms of light efficiency.

[0054] In addition, the present invention is not limited to the above embodiment. It can be formed by further including a mol.

[0055] FIG. 10 shows a separation model disposed between the optical pattern layer 150 and the diffusion plate 170 shown in FIG. FIG. 10 is a diagram showing an example of forming a module.

[0056] That is, the configuration of the lighting device according to the present invention includes a layer between the optical pattern layer 150 and the diffusion plate 170. The third region may further include a structure having a separation layer (third separation region) 160. The presence of 161 diffuses the light emitted from the light source, and the uniformity of the light is improved. In addition, the resin layer 140 and the optical In order to minimize the variation of light transmitted through the optical pattern layer 150, the third isolated region 16 It is desirable that the thickness of the film 0 be in the range of 0.01 to 2 mm.

[0057] The third isolation region 160 may be formed in a structure that allows an isolation layer to be formed under the diffusion plate. The third isolation region formed by such a structure is defined as an 'isolation module'. do.

[0058] The separation module is formed by processing the diffusion plate itself to form a separation region (separation layer), or The present invention includes a configuration in which a separate structure is formed under the diffusion plate to form a separation region.

[0059] That is, as shown in FIG. 10(a), a spacer 171 is formed under the diffusion plate 170. 3. The isolation region 160 is formed, or the lower part of the diffusion plate is patterned to form the lower part as shown in (b). The bridge 172 is in intimate contact with the other layer to form the third air area 160. It can be formed by the structure.

[0060] Such a monolithic structure may be formed by the patterned features, i.e., the isolation regions. It can be deformed in various ways depending on the shape of the pattern, and the shape of the bridge can be varied. It is obvious that various modifications can be made, and these are also included in the scope of the present invention. As shown in c), in addition to the method of patterning the lower surface of the diffusion plate itself, a separate structure The isolation region 160 may be formed by using a material. The illustrated structure is an example of a structure having bridges 174 as spacer members, but The gist of the present invention includes such a method, and various modifications that can form a separation layer under the diffusion plate are also included in the present invention. It goes without saying that this falls within the scope of the above.

[0061] As shown in (d), the structure of (b) in which the diffusion plate itself is patterned, or a separate structure is used, In addition to forming the isolation layer as a single layer, as in the structure (c), an independent isolation layer can be formed. Alternatively, structures 175, 176 may be employed to form the isolation regions 160, 161 with multiple layers. It is Noh.

[0062] The lighting device according to the present invention can be used in a variety of lamp devices that require illumination, such as vehicle lamps. It goes without saying that the lamps can be applied to automobiles, home lighting devices, and industrial lighting devices. Dual-purpose lamps can be used as headlights, interior lights, taillights, etc. An example of the lighting device according to the present invention that is applied to an LCD with the following structure and function will be given below. The explanation is as follows: In the lighting device according to the present invention, in order to reduce the number of light sources, the LED light source 130 is a side-emitting light source. Referring to FIG. 8, a side-emitting LED 130 emits light in a lateral direction. The emitted light is reflected and reflected by the resin layer 140 formed in place of the conventional light guide plate. The optical pattern layer 150 prevents the light from concentrating, and the second layer formed under the diffuser plate The three separated regions can minimize the light dispersion. The reflectance of the reflecting unit 120 according to the present invention, which is disposed between the substrate 110 and the substrate 110, is This can further improve the efficiency of light and achieve the effect of improving brightness. In particular, in the case of the reflective unit 120 according to the present invention, the adhesive material layer can be patterned. The design of the isolation area can be varied to adjust the reflectivity, and the patterned contact It also has the effect of being able to adjust the reflectance and color depending on the material and type of the adhesive. The reflectance can be adjusted according to the optical properties and thickness of the reflective member 122 .

[0063] In summary, the light emitted by the reflecting unit 120 and the reflecting pattern 124 according to the present invention is The reflected light has a higher reflection efficiency and can be guided forward. The light passing through the optical layer 140 passes through the optical pattern 151 formed on the optical pattern layer 150. The light thus refined is diffused or blocked by the diffuser plate. The optical properties are further refined by the isolating module, which then improves uniformity. White light is emitted through optical sheets such as the Prism Sheet 180 and DBEF190. The light is incident on the LCD panel.

[0064] The above example has been described by taking an example in which the present lighting device is applied to an LCD. The present invention can be applied to interior lighting, vehicle lamp devices, and the like in various modifications.

[0065] In this way, in the case of the lighting device according to the present invention, the structure having the separation area of ​​the reflection unit This maximizes the reflection efficiency and eliminates the light guide plate structure, allowing the side surface to function as a light source. It uses a light-emitting LED and guides the light by diffusing and reflecting it through a resin layer, resulting in a thin On the other hand, the reduction in the number of light sources leads to a decrease in brightness and uniformity. The problem of lightness can be adjusted by using the reflective pattern, the shading pattern and the separation area of ​​the separation module. In this way, the optical properties can be improved.

[0066] In the above detailed description of the present invention, specific examples have been described. Various modifications are possible within the scope of the present invention. The present invention should not be limited to the embodiments of the present invention, but should be applied not only to the scope of the claims but also to the scope of the claims equivalent thereto. It must be determined by the object. [Industrial Applicability]

[0067] The lighting device according to the present invention is applicable to various lamp devices that require illumination, such as vehicle lamps, It can be applied to home lighting devices and industrial lighting devices. Of course, it can also be applied to 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.

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