WO2013125816A1 - Élément optique - Google Patents

Élément optique Download PDF

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Publication number
WO2013125816A1
WO2013125816A1 PCT/KR2013/001224 KR2013001224W WO2013125816A1 WO 2013125816 A1 WO2013125816 A1 WO 2013125816A1 KR 2013001224 W KR2013001224 W KR 2013001224W WO 2013125816 A1 WO2013125816 A1 WO 2013125816A1
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WO
WIPO (PCT)
Prior art keywords
diffusion
plate
curved
optical member
plates
Prior art date
Application number
PCT/KR2013/001224
Other languages
English (en)
Korean (ko)
Inventor
이대환
서광석
김종은
황재선
심연승
Original Assignee
주식회사 앤앤드에프
인스콘테크(주)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 주식회사 앤앤드에프, 인스콘테크(주) filed Critical 주식회사 앤앤드에프
Publication of WO2013125816A1 publication Critical patent/WO2013125816A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0215—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having a regular structure
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors

Definitions

  • the present invention relates to an optical member, and more particularly, to an optical member that can be applied to a liquid crystal display, a light receiving display, a sign, lighting, and the like.
  • liquid crystal display In general, a liquid crystal display (LCD) is a representative display device widely used in various fields. Since the liquid crystal display is a non-light emitting device, a backlight unit for generating light is required.
  • Such a backlight unit is an important factor for determining the size and light efficiency of the liquid crystal display, and is composed of an assembly of various optical members.
  • the backlight unit includes a light source, a light guide plate, a reflecting plate, a diffusion sheet, a prism sheet, and a protective sheet.
  • Light generated from the light source is directed to the diffusion sheet through the light guide plate, and light diffused by the diffusion sheet is directed to the liquid crystal display panel through the first and second prism sheets.
  • the diffusion sheet serves to provide uniform luminance over the entire area, and as such, the backlight assembly requires various various sheets for performing different optical functions.
  • the prism sheet performs a function of improving luminance in a specific viewing angle range.
  • the luminance improvement at this particular viewing angle may be realized by condensing by the prism structure.
  • the diffusion sheet and the prism sheet are provided by simple contact, the diffusion sheet and the prism sheet may be displaced when the liquid crystal display device is used for a long time.
  • a light leakage phenomenon may occur in the liquid crystal display panel, or the light may not be properly refracted to the liquid crystal display panel, resulting in a narrow viewing angle or a problem in that the screen cannot be viewed at a specific viewing angle.
  • the present invention has been made to solve the above-described problems of the prior art, and an object thereof is to diffuse more regions of light so that a viewing angle of a liquid crystal display panel is wider, and a plurality of diffusion plates are provided or a refractive plate and a light guide plate are provided. Even if it is provided together with the optical member that can be provided integrally provided.
  • the optical member according to the first aspect of the present application is a base plate; An upper layer part provided on an upper side of the base plate; And a lower layer provided below the base plate, wherein each of the upper layer and the lower layer includes a diffusion plate having a plurality of curved diffusions formed on one or more of an upper surface and a lower surface to diffuse light.
  • the base plate, the upper layer part, and the lower layer part may be integrally formed, and the plurality of curved diffusion parts may be bent in a concave shape, and the curved surface of the curved diffusion part may pass through the curved diffusion part. Beads are provided that scatter light.
  • the light can be diffused to more areas.
  • the diffusion plate is formed of an adhesive resin, a plurality of laminated diffusion plates may be integrally formed.
  • the base plate or the refracting plate is provided together by the adhesiveness of the diffusion plate, it may be integrated with the diffusion plate to prevent the occurrence of light leakage.
  • the light diffusion efficiency can be increased, so that the brightness of the optical member can be improved, and the curved diffusion portion of each of the lower layer and the upper layer can be improved.
  • the light diffusion can be made more efficient and an optical member having a greatly improved luminance can be provided.
  • FIG. 1 is a perspective view and a cross-sectional view showing a diffusion plate of an optical member according to an embodiment of the present invention.
  • FIG. 2 shows an enlarged view of a part of the diffusion plate according to FIG. 1.
  • 3 and 4 are a perspective view and a cross-sectional view showing another form of the diffusion plate of the optical member according to an embodiment of the present invention.
  • 5A through 5N are cross-sectional views illustrating various embodiments of various upper and lower diffused plated parts according to an embodiment of the present invention.
  • FIG. 6 is a cross-sectional view of an optical member according to another embodiment of the present invention.
  • the optical member according to the exemplary embodiment of the present invention may be applied to various fields such as a liquid crystal display (LCD) as well as all light-receiving display devices such as electrophoretic display devices, signs, and lighting. .
  • LCD liquid crystal display
  • all light-receiving display devices such as electrophoretic display devices, signs, and lighting.
  • FIG. 1 is a perspective view and a cross-sectional view showing a diffusion plate of an optical member according to an embodiment of the present invention.
  • 2 shows an enlarged view of a part of the diffusion plate according to FIG. 1.
  • 3 and 4 are a perspective view and a cross-sectional view showing another form of the diffusion plate of the optical member according to an embodiment of the present invention.
  • 5A to 5N are cross-sectional views illustrating various embodiments of stacked upper and lower layers of a plurality of diffusion plates according to an embodiment of the present invention.
  • 6 is a cross-sectional view of an optical member according to another embodiment of the present invention.
  • the optical member according to the exemplary embodiment includes diffusion plates 110, 110 ′, and 130.
  • the diffusion plates 110, 110 ′ and 130 serve to diffuse light into a wider area when light emitted from the light source is incident on the other surface side of the diffusion plates 110, 110 ′ and 130. Accordingly, the diffusion plates 110, 110 ′ and 130 may have a plurality of curved diffusions 115 formed on one or more surfaces of one side, that is, the upper side 113 and 131 and the lower side 113 and 133 to diffuse light. 135).
  • the curved diffusion portions 115 and 135 formed on at least one of the upper surfaces 111 and 131 and the lower surfaces 113 and 133 of the diffusion plates 110, 110 ′ and 130 are spaced apart from each other in an embossed or intaglio form. Can be formed.
  • the plurality of curved diffusions 115 and 135 formed on any one of the upper and lower surfaces of the diffusion plates 110, 110 ′ and 130 may be formed to be bent equally to each other in one of embossed and engraved forms. Can be.
  • the curved diffusion portions 115 and 135 formed on one surface of the diffusion plates 110, 110 ′ and 130 may have different shapes, the shapes may be different as shown in FIGS. 1 to 5N. By forming the same as each other, the light passing through the diffusion plate 110 can be made more uniform and regular.
  • the curved diffusions 115 and 135 may include one curved diffusion 115 and 135 for six curved diffusions 115 and 135. It may be formed to be arranged in a surrounding form. In other words, the curved diffusion portions 115 and 135 formed on one surface of the diffusion plates 110, 110 ′ and 130 may be formed in a two-dimensional hexagonal dense structure (or a triangular type array having a three-point center). The curved diffusion portions 115 and 135 may be formed to further increase the light diffusion efficiency.
  • the concave diffusion portion 115 has a concave diffusion portion 115
  • the concave diffusion portion 135 has a convex diffusion portion 135.
  • a plurality of concave diffusion parts 115 may be formed in the diffusion plate 110 spaced apart from each other.
  • the concave diffusion 115 is formed on the upper surface 111 of the diffusion plate 110, and according to FIG. 1C, the concave The diffuser 115 is formed on the lower side 113 of the diffuser plate 110.
  • the concave diffusion portion 115 is not formed on the lower surface 113 of the diffusion plate 110. It may be formed on the upper side 111 of the diffusion plate 110.
  • the upper surface 111 of the diffusion plate 110 is formed. Inverting the diffusion plate 110 such that the position of the bottom surface 113) and the lower side 113 may be reversed may be formed as shown in the diffusion plate 110 shown in FIG.
  • the curved diffusion portion is formed as the concave diffusion portion 135, as shown in FIG. 2, an angle ⁇ formed between the upper side 111 or the lower side 113 and the virtual axis X shown in the drawing is shown. ) May be a value between 10 ⁇ ⁇ 170 ⁇ .
  • the virtual axis X is the center of the concave diffuser 115 at the point A where the concave diffuser 115 and the upper side 111 or the lower side 113 abut.
  • the axis intersects with C).
  • the depth of the concave diffusion portion 115 becomes deeper as the value of the angle ⁇ formed between the upper side 111 or the lower side 113 and the virtual axis X becomes larger, and the upper side 111 or the lower side faces. As the value of the angle ⁇ formed between the 113 and the virtual axis X becomes smaller, the depth becomes shallower.
  • a plurality of convex diffusion parts 135 are spaced apart from each other in the diffusion plate 130.
  • the convex diffuser 135 is formed on the upper side 131 of the diffusion plate 130, and according to FIG. 3c, the convex diffuser 135 Is formed on the lower surface 133 of the diffusion plate 130.
  • the convex diffusion 135 is not formed on the lower surface 133 of the diffusion plate 130. It may be formed on the upper side of the diffusion plate 130. For example, as shown in FIGS.
  • the upper surface 131 of the diffusion plate 130 is formed. Inverting the diffusion plate 130 so that the position of the bottom surface 133 is reversed may be formed as shown in the diffusion plate 130 shown in FIG.
  • a plurality of concave diffusion parts 115 may be formed on the diffusion plate 110 ′, spaced apart from each other, and a bead 117 may be provided in each concave diffusion part 115.
  • the beads 117 are formed to further scatter the light passing through the concave diffusion 115.
  • the beads 117 are preferably made of the same material as the diffusion plate 110 ', but after the diffusion plate 110' is manufactured in the same manner as the diffusion plate 110 shown in FIG.
  • the concave surface of the 115 may be provided with a bead 117 manufactured separately. Therefore, according to (a) and (b) of FIG. 4, the concave diffusion part 115 having the beads 117 may be formed on the upper surface 111 of the diffusion plate 110 ′, and FIG. ),
  • the concave diffusion portion 115 with the beads 117 may be formed on the lower side 113 of the diffusion plate 110 ′.
  • the curved diffusion portion is formed in an embossed or intaglio form on one or more of the upper side (111, 131) and the lower side (113, 133), the upper side 111 , 131 and the lower surfaces 113 and 133 may be formed in various shapes.
  • the diffusion plate (110, 110 ', 130) is formed of a resin having a tacky.
  • adheresiveness refers to a state in which the adhesive force is semi-permanently maintained due to stickiness, and is different from the adhesion and adhesion in which the adhesive force is present only during the process and is lost after completion.
  • the diffusion plates 110, 110 ′ and 130 may be formed of a photocurable resin that is transparent to allow light to pass therethrough and that may be cured by light irradiation.
  • the photocurable resin may be made of any one of an ultraviolet curable resin cured by irradiation with ultraviolet rays and an infrared curable resin cured by irradiation with infrared rays.
  • the diffusion plates 110, 110 ′ and 130 may be made of a thermosetting resin having a tacky but cured by heat, in addition to the photocurable resin having a tacky adhesive. Can be supplied via In addition to the adhesive resin, it may be formed of an adhesive resin.
  • Optical member according to an embodiment of the present invention is provided with one or more diffusion plates 110, 110 ', 130 as described above are stacked.
  • the optical member may be provided with only one diffusion plate of the three types of diffusion plates 110, 110 ′ and 130 as described above, or three types of diffusion plates 110, 110 ′ and 130.
  • a plurality of diffusion plates of different forms selected from among the plurality may be stacked and provided.
  • the optical member including a plurality of diffusion plates may include an upper layer part 100 and a lower layer part 200. As one or more diffusion plates are stacked on the upper layer 100 and the lower layer 200, the optical member may include a plurality of diffusion plates. 5A through 5N, a plurality of diffusion plates 110, 110 ′, and 130 may be stacked on each of the upper layer portion 100 and the lower layer portion 200.
  • the curved diffusion parts 115 and 135 formed on the diffusion plates 110, 110 ′ and 130 of the upper layer part 100 and the bending diffusion parts formed on the diffusion plates 110, 110 ′ and 130 of the lower layer part 200 are provided.
  • the portions 115 and 135 may be identical to each other (see FIGS. 5A, 5B, 5F, 5G, and 5H) or may be different from each other (FIGS. 5C, 5D, 5E, 5I, 5J, and 5J). 5k, 5l, 5m, 5n).
  • the curved diffusion parts 115 and 135 formed on the diffusion plates 110, 110 ′ and 13 of the upper layer part 100 and the curved diffusion parts 115 formed on the diffusion plates 110, 110 ′ and 130 of the lower layer part 200. And 135 are the same as each other, the directions in which the curved diffusions 115 and 135 are formed may be the same (see FIGS. 5F and 5G) or may be different from each other (see FIGS. 5A, 5B and 5H).
  • the upper layer part 100 and the lower layer part 200 may be integrally formed by the adhesion of the plurality of stacked diffusion plates 110, 110 ′, and 130.
  • the integrally formed means that the plurality of stacked diffusion plates 110, 110 ′ and 130 are formed as one body which is not easily separated by an external force.
  • the diffusion plates 110, 110 ′ and 130 are formed of a resin having adhesiveness, as described above, even when the plurality of stacked and bonded diffusion plates 110, 110 ′ and 130 are separated, the respective diffusion plates are separated. Since the adhesive force is maintained by the (110, 110 ', 130), the plurality of diffusion plates (110, 110', 130) can be easily re-bonded by applying a slight pressure, light irradiation or heat, semi-permanent Phosphorus life can be maintained.
  • FIGS. 5A to 5N illustrate various embodiments of the upper layer portion 100 and the lower layer portion 200 including the plurality of diffusion plates 110, 110 ′ and 130 as described above.
  • various embodiments of the upper layer part 100 and the lower layer part 200 according to the stacked structure of the plurality of diffusion plates 110, 110 ′ and 130 will be briefly described with reference to respective drawings.
  • the cross-sectional views illustrated in FIGS. 5A to 5N illustrate cross-sectional views based on respective diffusion plates illustrated in FIGS. 1, 3, and 4.
  • the upper layer part 100 includes one or more diffusion plates 110 having a concave diffusion part 115 formed on an upper side 111, and a concave diffusion part on a lower side 113 of the lower layer part 200.
  • One or more diffusion plates 110 on which the portions 115 are formed may be provided in a stack.
  • the upper layer part 100 includes one or more diffusion plates 130 having convex diffusion parts 135 formed on the upper side 131, and the lower layer 200 convex diffusion on the lower side 133.
  • One or more diffusion plates 130 on which the portions 135 are formed may be provided in a stack.
  • the upper layer part 100 includes one or more diffusion plates 110 having concave diffusion parts 115 formed on the upper side 111, and the lower layer part 200 convexly spreading on the upper side 131.
  • One or more diffusion plates 130 on which the portions 135 are formed may be provided in a stack.
  • the upper layer part 100 includes one or more diffusion plates 110 having concave diffusion parts 115 formed on the upper side 111, and the lower layer part 200 convexly diffused on the lower side 133.
  • One or more diffusion plates 130 on which the portions 135 are formed may be provided in a stack.
  • the upper layer portion 100 includes one or more diffusion plates 130 having convex diffusion portions 135 formed on the upper side 131, and the lower layer 200 concave diffusion on the upper side 111.
  • One or more diffusion plates 130 on which the portions 115 are formed may be provided in a stack.
  • the upper layer portion 100 includes one or more diffusion plates 130 having convex diffusion portions 135 formed on the upper side 131, and the lower layer 200 convex diffusion on the upper side 131.
  • One or more diffusion plates 130 on which the portions 135 are formed may be provided in a stack.
  • the upper layer portion 100 includes one or more diffusion plates 110 having the concave diffusion portion 115 formed on the upper side 111, and the lower layer 200 concave diffusion on the upper side 111.
  • One or more diffusion plates 110 on which the portions 115 are formed may be provided in a stack.
  • At least one diffusion plate 110 having a concave diffusion portion 115 including a bead 117 is formed on the upper side portion 111, and the lower layer portion 200 has a lower layer portion 200.
  • At least one diffusion plate 110 having a concave diffusion portion 115 having a bead 117 may be provided on the side surface 113.
  • the upper layer portion 100 includes one or more diffusion plates 110 having a concave diffusion portion 115 including the beads 117 formed on the upper side 111 and the lower layer portion 200. At least one diffusion plate 130 having a convex diffusion 135 formed on the side surface 133 may be provided in a stack.
  • one or more diffusion plates 110 including a concave diffusion part 115 including a bead 117 are formed on the upper side part 111, and the lower layer part 200 includes an upper layer part 100.
  • At least one diffusion plate 130 having a convex diffusion 135 formed on the side surface 131 may be provided in a stack.
  • At least one diffusion plate 130 having a convex diffusion portion 135 is formed on the upper side 131, and the lower layer 200 has a bead on the upper side 111.
  • One or more diffusion plates 110 including the concave diffusion portion 115 having the 117 may be stacked.
  • the upper layer part 100 includes one or more diffusion plates 110 having convex diffusion parts 135 formed on the upper side 131, and the lower layer part 200 having beads on the lower side 113.
  • One or more diffusion plates 110 including the concave diffusion portion 115 having the 117 may be stacked.
  • one or more diffusion plates 130 having convex diffusion portions 135 are formed on the lower side 133, and the lower layer 200 has beads on the lower side 113.
  • One or more diffusion plates 110 including the concave diffusion portion 115 having the 117 may be stacked.
  • At least one diffusion plate 110 having a concave diffusion part 115 including a bead 117 is formed on the lower side 113, and the lower layer part 200 has a lower layer part 200.
  • At least one diffusion plate 130 having a convex diffusion 135 formed on the side surface 133 may be provided in a stack.
  • the plurality of diffusion plates 110, 110 ′ and 130 are stacked and the upper layer 100 and the lower layer 200 are formed, the plurality of diffusion plates 110, 110 ′ and 130 are set to be optical. Fabrication of the member can be facilitated, and since the plurality of diffusion plates 110, 110 ′ and 130 are stacked, light diffusion efficiency can be improved.
  • the upper layer portion 100 and the lower layer portion 200 may be provided as diffusion plates 110, 110 ', and 130 of different types, respectively, and the diffusion plates 110, 110', and 130 may be provided through a combination thereof. The diffusion efficiency of the light passing through it can be further improved.
  • the optical member according to the exemplary embodiment of the present invention includes a base plate 140.
  • the base plate 140 is provided between the upper layer part 100 and the lower layer part 200 of the plurality of diffusion plates 110 having a laminated structure.
  • the base plate 140 may serve to support the upper layer part 100 and the lower layer part 200 in the manufacturing process of the optical member.
  • one or more diffusion plates (110, 110 ', 130) on one surface of the base plate 140 by sequentially stacked upper layer portion 100
  • the base plate 140 serves to support the stacked upper layer part 100
  • the upper layer part 100 and the base plate 140 are integrated, and then the base plate 140 is turned upside down and the base plate 140 is inverted.
  • the lower layer 200 is formed by sequentially stacking one or more diffusion plates 110, 110 ′, and 130 on the other surface of the base layer (the base plate 140 supports the lower layer 200 to be stacked).
  • the base plate 140 may be made of polymethymethacrylate (PMMA), PET, PE, and the like, which are acrylic resins.
  • the lowermost portion of the lower layer 200 may be provided with a light guide plate for converting the light incident from the light source into a uniform plane light.
  • the light source may be provided at the side of the light guide plate or may be provided in a direct type at the rear portion of the light guide plate.
  • the light source mounted on the light guide plate may be, for example, a Cold Cathode Fluorescent Lamp (CCFL), a Light Emitting Diode (LED), an Electro Luminescent (EL), or the like.
  • FIG. 6 is a cross-sectional view showing an optical member according to another embodiment of the present invention.
  • the optical member according to another embodiment of the present invention is a diffusion plate (110, 110 ', 130) such as the optical member according to an embodiment of the present invention described above ) And an upper layer part 100 and a lower layer part 200 in which one or more diffusion plates 110, 110 ′ and 130 are stacked and provided. The description thereof will be omitted since it has been described in the optical member according to the exemplary embodiment of the present invention.
  • the optical member according to the present invention may include a refractive plate 300.
  • the optical member may be provided by being stacked on the uppermost side of the plurality of diffusion plates 110 in which the refractive plate 300 is a stacked structure, and although not shown in the drawing, the refractive plate 300 may be provided.
  • the refractive plate 300 may be provided.
  • two or more may be stacked.
  • the refractive plate 300 may be made of a transparent synthetic resin.
  • the synthetic resin may be polyethylene terephthalate (PET), methacryl resin, acrylic resin, polycarbonate (PC) resin, polyester resin, vinyl chloride resin, or the like.
  • the refraction plate 300 serves to refract light so that the light transmitted from the diffusion plate 110 is transmitted to the display panel, and a plurality of prisms that can refract light on the upper surface of the refraction plate 300.
  • the part 310 may be formed.
  • the prism part 310 may be provided in plurality in a direction crossing the direction in which the refractive plates 300 are stacked. In addition, when a plurality of refraction plates 300 are stacked, the refraction plates 300 may be stacked so that the arrangement directions of the prism portions 310 cross each other.
  • the surface of the prism portion 310 may be provided with a fine concave-convex portion that can adjust the brightness or transmittance.
  • the plurality of prism portions 310 have a vertex angle smaller than 90 °, and for example, it may be designed to have a vertex angle of 80 ° or less. Can be. However, since too small a peak angle is difficult to manufacture, the peak angles of the plurality of prism portions 310 may be formed to be 30 ° or more.
  • the optical member according to the present invention may include a base plate 140.
  • the base plate 140 may be provided between the upper layer part 100 and the lower layer part 200 of the plurality of diffusion plates 110 having a stacked structure.
  • the base plate 140 may be generally made of polymethymethacrylate (PMMA), PET, PE, or the like, which is an acrylic resin.
  • the lowermost portion of the lower layer 200 may be provided with a light guide plate for converting the light incident from the light source into a uniform plane light.
  • the light source may be provided at the side of the light guide plate or may be provided in a direct type at the rear portion of the light guide plate.
  • the light source mounted on the light guide plate may be, for example, a Cold Cathode Fluorescent Lamp (CCFL), a Light Emitting Diode (LED), an Electro Luminescent (EL), or the like.
  • the plurality of diffusion plates 110 are made of the diffusion plate 110 having adhesiveness, the refractive plate 300 and the plurality of diffusion plates stacked on the uppermost side of the plurality of diffusion plates 110 are provided.
  • the base plate 400 provided to be stacked on the lowermost side of the 110 may be integrally formed by being bonded by the adhesiveness of the diffusion plate 110.
  • the plurality of diffusion plates 110 may be re-bonded with each other by the property of the diffusion plate 110 which maintains adhesiveness.
  • the plurality of diffusion plates 110 and the refraction plate 300 or the base plate 400 may be rebonded with each other due to the adhesive material, and thus the life of the optical member may be semi-permanently extended as compared with the conventional art.
  • FIG. 6 a stacking structure of a plurality of diffusion plates 110 according to another embodiment of the present invention is illustrated as a stacking structure as shown in FIG. 5A, but this is merely exemplary and is not illustrated in the drawings.
  • a stack structure of a plurality of diffusion plates according to another embodiment of the present invention may also be variously formed as a stack structure of a plurality of diffusion plates according to an embodiment of the present invention.
  • the optical member according to the exemplary embodiment of the present invention may maintain adhesiveness even after the diffusion plate is manufactured because the plurality of diffusion plates constituting the resin are formed of a resin having adhesiveness. In this way, if the adhesiveness is maintained, even if the optical member on which the plurality of diffusion plates are stacked is separated during use, the adhesiveness is maintained on the diffusion plate, so that the diffusion plate can be re-bonded by applying a predetermined pressure, thereby semi-permanently extending the life of the optical member. It can have an effect.
  • the optical member according to an embodiment of the present invention is provided with a plurality of diffusion plates stacked, the diffusion region of the light passing through the diffusion plate becomes wider, so that the refractive plate may be omitted, and the optical plate is omitted by the optical plate. It can be provided in a compact, thereby the effect that the liquid crystal display device can be provided more slim.
  • the plurality of diffusion plates and the refractive plate or the base plate when the plurality of diffusion plates and the refractive plate or the base plate are provided, the plurality of diffusion plates and the refractive plate or the base plate are integrally manufactured by the adhesion of the diffusion plate. Light leakage phenomenon of the liquid crystal display device can be prevented from occurring.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

La présente invention concerne un élément optique comprenant : une plaque de base ; une partie de couche supérieure située sur le dessus de la plaque de base ; et une partie de couche inférieure située sur le dessous de la plaque de base. La partie de couche supérieure et la partie de couche inférieure comprennent, sur leur surface supérieure et/ou inférieure, une plaque de diffusion comportant une pluralité de parties de diffusion incurvées afin de diffuser une lumière. La plaque de base, la partie de couche supérieure et la partie de couche inférieure sont formées d'un seul tenant. La pluralité de parties de diffusion incurvées se présente sous la forme d'une gravure. Une nervure permettant de disperser une lumière traversant les parties de diffusion incurvées est ménagée sur les surfaces incurvées des parties de diffusion incurvées sous la forme d'une gravure.
PCT/KR2013/001224 2012-02-21 2013-02-18 Élément optique WO2013125816A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020120017320A KR101262874B1 (ko) 2012-02-21 2012-02-21 광학부재
KR10-2012-0017320 2012-02-21

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WO2013125816A1 true WO2013125816A1 (fr) 2013-08-29

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KR102536534B1 (ko) 2018-06-22 2023-05-25 엘지이노텍 주식회사 카메라 모듈

Citations (4)

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KR20050103563A (ko) * 2004-04-26 2005-11-01 삼성전자주식회사 액정 표시 장치
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KR20080072270A (ko) * 2007-02-01 2008-08-06 온누리전자(주) 확산 수단이 일체화된 백라이트 유닛용 프리즘 시트 및 그제조방법
KR20090089511A (ko) * 2008-02-19 2009-08-24 웅진케미칼 주식회사 휘도 및 내스크래치성이 개선된 광확산판

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KR20050103563A (ko) * 2004-04-26 2005-11-01 삼성전자주식회사 액정 표시 장치
JP2007065358A (ja) * 2005-08-31 2007-03-15 Fujifilm Corp ディスプレイ用光学シート及びその製造方法
KR20080072270A (ko) * 2007-02-01 2008-08-06 온누리전자(주) 확산 수단이 일체화된 백라이트 유닛용 프리즘 시트 및 그제조방법
KR20090089511A (ko) * 2008-02-19 2009-08-24 웅진케미칼 주식회사 휘도 및 내스크래치성이 개선된 광확산판

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