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WO2014087688A1 - 導光板、面光源装置、透過型画像表示装置及び導光板の製造方法 - Google Patents

導光板、面光源装置、透過型画像表示装置及び導光板の製造方法 Download PDF

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Publication number
WO2014087688A1
WO2014087688A1 PCT/JP2013/065498 JP2013065498W WO2014087688A1 WO 2014087688 A1 WO2014087688 A1 WO 2014087688A1 JP 2013065498 W JP2013065498 W JP 2013065498W WO 2014087688 A1 WO2014087688 A1 WO 2014087688A1
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WO
WIPO (PCT)
Prior art keywords
light
guide plate
light guide
incident
base material
Prior art date
Application number
PCT/JP2013/065498
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English (en)
French (fr)
Japanese (ja)
Inventor
裕之 熊澤
Original Assignee
住友化学株式会社
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.)
Filing date
Publication date
Application filed by 住友化学株式会社 filed Critical 住友化学株式会社
Priority to CN201380062839.1A priority Critical patent/CN104903641A/zh
Priority to KR1020157017742A priority patent/KR20150091398A/ko
Publication of WO2014087688A1 publication Critical patent/WO2014087688A1/ja

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0065—Manufacturing aspects; Material aspects

Definitions

  • the present invention relates to a light guide plate, a surface light source device, a transmissive image display device, and a method for manufacturing the light guide plate.
  • a transmissive image display unit such as a liquid crystal panel does not emit light itself, but is illuminated by a separately provided surface light source device to display an image.
  • a separately provided surface light source device is, for example, a sidelight type surface light source device including a light guide plate and a light source unit disposed on the side of the light guide plate.
  • a transmissive image display device including the transmissive image display unit and the surface light source device is widely known.
  • a flexible device is known as a self-luminous display device using organic EL. Recently, a flexible non-luminous display device employing a transmissive image display unit such as a liquid crystal panel is required. . In order to make a non-light emitting display device flexible, the light guide plate also needs to be flexible.
  • an object of the present invention is to provide a flexible light guide plate, a surface light source device including the light guide plate, a transmissive image display device, and a method for manufacturing the light guide plate.
  • a light guide plate is a light guide plate that emits light incident from an incident surface as planar light from an output surface that intersects the incident surface.
  • the light guide plate has an entrance surface and an exit surface, and includes a light guide plate base material portion made of a transparent and flexible material.
  • the light guide plate base material portion is made of a transparent and flexible material, the light guide plate can have flexibility.
  • a plurality of light scattering portions that are provided on the back surface located on the opposite side of the light exit surface and scatter at least part of the light incident from the light entrance surface to the light exit surface side May be further provided.
  • the material of the light guide plate base material portion may be a material in which the total light transmittance of the measurement base material portion made of the material is 80% or more.
  • the base material part for measurement is a rectangular parallelepiped whose length in the longitudinal direction is 250 mm in the plan view shape.
  • the amount of light incident from the first side surface orthogonal to the longitudinal direction and emitted from the second side surface opposite to the first side surface is defined as Q out
  • the amount of light incident on the first side surface Is Q in the total light transmittance is defined as Q out / Q in .
  • the innermost radius when the light guide plate is wound in a roll shape, the innermost radius may be flexible so as to be 2.5 cm or less.
  • the thickness of the light guide plate base material portion may be 0.7 mm or less.
  • the light scattering portion in the light guide plate base material portion, a plurality of light scattering portions that are provided on the back surface located on the opposite side of the light exit surface and scatter at least part of the light incident from the light entrance surface to the light exit surface side
  • the light scattering portion may be a light scattering dot having a substantially circular shape in plan view.
  • F / D may be 0.33 or less, where D is the thickness of the light guide plate base material portion and F is the diameter of the light scattering portion.
  • a surface light source device includes a light guide plate according to one aspect of the present invention and a light source that supplies light to an incident surface of the light guide plate.
  • a transmissive image display device includes a light guide plate according to one aspect of the present invention, a light source that supplies light to an incident surface of the light guide plate, and planar light from the light guide plate.
  • a transmissive image display unit that receives and displays an image.
  • a method of manufacturing a light guide plate is a method of manufacturing a light guide plate that is transparent and flexible and emits as planar light from an exit surface that intersects the entrance surface.
  • the method of manufacturing the light guide plate includes a step of manufacturing a resin sheet by continuously extruding a transparent and flexible thermoplastic resin in a molten state, a step of winding and transporting the resin sheet in a roll shape, and a resin sheet.
  • a step of printing a plurality of light scattering portions for scattering at least a part of the light incident from the incident surface on the exit surface side, and a resin sheet on which the plurality of light scattering portions are printed And obtaining a light guide plate by cutting into a size.
  • the resin sheet is formed by continuously extruding a molten thermoplastic resin, and thus is long in the extrusion direction. Since the long resin sheet is rolled and conveyed, for example, when the resin sheet is conveyed in the manufacturing process, the conveying operation is easy.
  • a flexible light guide plate a surface light source device including the light guide plate, a transmissive image display device, and a method for manufacturing the light guide plate can be provided.
  • FIG. 1 is a schematic diagram of a light guide plate according to an embodiment.
  • FIG. 2 is a diagram for explaining the total light transmittance.
  • FIG. 3 is a schematic view of a state where the light guide plate shown in FIG. 1 is wound around a roll.
  • FIG. 4 is a drawing showing a schematic configuration of an example of an apparatus for manufacturing the light guide plate shown in FIG.
  • FIG. 5 is a flowchart of the method for manufacturing the light guide plate.
  • FIG. 6 is a schematic diagram illustrating a schematic configuration of a transmissive image display device to which a light guide plate is applied.
  • FIG. 7 is a drawing showing a modification of the method for manufacturing the light guide plate.
  • FIG. 8 is a view showing a modification of the method of winding the light guide plate.
  • FIG. 9 is a schematic view of a state in which a modification of the light guide plate shown in FIG. 1 is wound around a roll.
  • FIG. 10 is a drawing showing a further modification of the wind
  • FIG. 1 is a schematic diagram of a light guide plate according to an embodiment.
  • the light guide plate 10 includes a light guide plate base material portion 11 having a plate shape.
  • the light guide plate base 11 has an incident surface 11a on which light is incident, an output surface 11b that emits light, and a back surface 11c that is located on the opposite side of the output surface 11b.
  • the entrance surface 11a is a side surface that intersects with the exit surface 11b and the back surface 11c (in FIG. 1, it is orthogonal to the exit surface 11b and the back surface 11c).
  • the incident surface 11 a functions as the incident surface of the light guide plate 10.
  • the exit surface 11 b functions as the exit surface of the light guide plate 10.
  • the example of the planar view shape (shape seen from the thickness direction) of the light-guide plate base-material part 11 contains a rectangle and a square.
  • the light guide plate base 11 guides the light incident from the incident surface 11a toward the side surface opposite to the incident surface 11a.
  • the direction from the incident surface 11a toward the side surface 11d is also referred to as a light guide direction.
  • a plurality of light scattering portions 12 are provided on the back surface 11c.
  • the light scattering unit 12 scatters light incident from the incident surface 11a. Thereby, at least a part of the light incident from the incident surface 11a and scattered by the light scattering portion 12 is propagated toward the exit surface 11b side. That is, at least a part of the light incident from the incident surface 11 a is reflected by the light scattering portion 12 toward the emission surface 11 b.
  • the arrangement state of the plurality of light scattering portions 12 and the shape of each light scattering portion 12 may be set so that the light emitted from the emission surface 11b has desired characteristics.
  • the arrangement state of the plurality of light scattering portions 12 and the shape of each light scattering portion 12 may be set so that light with uniform luminance is emitted from the emission surface 11b.
  • the light scattering portion 12 may include lens-shaped, quadrangular pyramid-shaped, and plate-shaped light scattering dots.
  • the light scattering portion 12 may be convex or concave.
  • the light scattering portion 12 may be a convex portion or a concave portion extending in the direction orthogonal to the light guide direction on the back surface 11c. In this case, the plurality of light scattering portions 12 are arranged in parallel in the light guide direction.
  • the light scattering portion 12 may contain diffusing particles.
  • the light scattering portion 12 can be formed by, for example, a printing method.
  • Examples of the printing method for forming the light scattering portion 12 may include silk printing, ink jet printing, and screen printing.
  • the light scattering portion 12 may be formed in a concave shape by a method of irradiating laser light, or formed in a concave shape or a convex shape by pressing a stamper on which fine unevenness is formed. May be.
  • a smaller light scattering portion 12 can be formed.
  • the light scattering portion 12 is small, it is difficult to see the light scattering portion 12 from the emission surface 11b side even if the light guide plate 10 is thin.
  • a liquid repellent treatment may be performed on the back surface 11c of the light guide plate base material portion 11 as a pretreatment.
  • the material of the light scattering unit 12 may include white ink, ultraviolet curable resin, and the like.
  • liquid repellent treatment may include a treatment using a surface modifier as a liquid repellent treatment, a treatment with various energy rays, a treatment by chemical adsorption, and a treatment by graft polymerization on the material surface.
  • the treatment using the surface modifier is a treatment for forming a liquid repellent layer to which a small amount of the surface modifier is added on the back surface 11c.
  • the surface modifier as the liquid repellent treatment agent may include a vinyl polymer having a perfluoroalkyl group (Rf group) in the side chain and an Rf group-containing silicone.
  • the liquid repellent layer can be formed by a method in which a surface modifier is soaked in a paper waste and applied to the back surface 11c, or the surface modifier is sprayed on the back surface 11c by spraying or ink jet printing.
  • the treatment with various energy rays is a treatment for imparting liquid repellency to the back surface 11c with the energy rays.
  • energy rays can include plasma, electron beams, ion beams, and the like.
  • liquid repellent treatment using plasma treatment include forming a liquid repellent monomolecular film on the roughened surface after roughening the back surface 11c by plasma etching, fluorine-based gas plasma, and the like. Including fluorination of the back surface 11c, forming a film composed of a liquid repellent compound on the back surface 11c by plasma CVD (Chemical Vapor Deposition), and forming a liquid repellent thin film on the back surface 11c by plasma polymerization. obtain.
  • plasma CVD Chemical Vapor Deposition
  • Examples of treatment by surface roughening may include imparting irregularities to the back surface 11c by hot pressing, etching with chemicals, blasting, and the like.
  • the end of the adsorbed molecule In the treatment by chemical adsorption, it is preferable to modify the end of the adsorbed molecule with fluorine.
  • the CF3 group is preferred as the terminal substituent from the viewpoint of liquid repellency.
  • fluorination of the back surface 11c with fluorine-based gas plasma is preferable because it is simple and uniform.
  • the hydrophilic treatment may include ultraviolet irradiation, contact with alcohol, plasma treatment, and the like.
  • Ultraviolet irradiation can be performed using a low-pressure mercury lamp, a metal halide lamp, or the like.
  • Ultraviolet irradiation may be performed in an air atmosphere or an ozone atmosphere.
  • the contact between the surface of the acrylic resin plate and the alcohol can be performed, for example, by a method of wiping the surface of the acrylic resin plate using a fiber base material such as a waste impregnated with alcohol.
  • IPA isopropyl alcohol
  • An example of plasma treatment is corona treatment.
  • the light guide plate 10 is a flexible light guide plate 10.
  • the light guide plate base 11 is transparent and has flexibility.
  • the light guide plate base 11 is made of a transparent and flexible material. More specifically, the light-guide plate base material part 11 should just be comprised from what is called an elastomer.
  • the material of the light guide plate base 11 include acrylic resin, styrene resin, polymethyl methacrylate (PMMA) resin, polystyrene (PS) resin, MS (methyl methacrylate-styrene copolymer) resin, polycarbonate resin.
  • the material of the light guide plate base material portion 11 may be a block copolymer of methyl methacrylate and butyl acrylate.
  • the light guide plate base part 11 may be a sheet-like molded product in which a polycarbonate resin layer is laminated on one surface or both surfaces of an acrylic resin layer.
  • the light guide plate base 11 may contain additives such as a light diffusing agent, an ultraviolet absorber, an antistatic agent, an antioxidant, a processing stabilizer, a flame retardant, and a lubricant without departing from the spirit of the present invention. good.
  • the light guide plate 10 may be transparent as long as the light guide plate 10 can be used to guide light.
  • a predetermined sample (measuring base material portion) 20 is made of the same material (base material) as the light guide plate base material portion 11 and the total light transmittance Tt of the sample 20 is 80%. That is enough, and it is preferably 85% or more.
  • FIG. 2 is an explanatory diagram for explaining the total light transmittance.
  • a sample 20 having a length of 250 mm, a width of 40 mm, and a thickness of 2 mm was prepared using the same material as the light guide plate base material portion 11.
  • light is incident on one side surface (first side surface) 20a from the light source unit 30, and the other side surface (second side opposite to the side surface 20a) is opposed to the side surface 20a (second side).
  • Side The light emitted from 20b is measured by the detector 31.
  • the detection unit 31 is, for example, a long optical path measuring device (U-4100) manufactured by Hitachi High-Technologies Corporation.
  • the total light transmittance Tt is expressed by the following equation (2), where Q in is the amount of light entering the side surface 20a serving as the incident surface and Q out is the amount of light output from the side surface 20b.
  • Tt Q out / Q in (2)
  • the thickness D is preferably 0.1 mm to 0.7 mm, More preferably, it is 0.2 mm to 0.4 mm.
  • the innermost radius is preferably 2.5 cm or less, more preferably 1.5 cm or less.
  • FIGS. 3 and 9 schematically show a cross-sectional configuration when the light guide plate is wound around a roll and cut along a cross section perpendicular to the center line of the roll.
  • the light guide plate 10 can be wound in close contact with the roll 50 preferably having the radius R of 2.5 cm or less, more preferably 1.5 R or less.
  • the light guide plate 10 has a certain degree of flexibility. The above flexibility of the light guide plate 10 can be realized if the light guide plate base material portion 11 has the same flexibility.
  • the planar view shape of the light scattering dot (the shape seen from the thickness direction of the light guide plate base material portion 11) is It is approximately circular.
  • F the diameter of the light scattering portion 12 having a substantially circular planar shape is F
  • F / D is preferably 0.33 or less, and more preferably 0.13. It is as follows.
  • the light guide plate 10 having the above-described configuration can be manufactured using a manufacturing apparatus shown in FIG.
  • FIG. 4 is a drawing showing a schematic configuration of an example of an apparatus for manufacturing the light guide plate shown in FIG.
  • the light guide plate 10 is manufactured by extrusion using the manufacturing apparatus 40 shown in FIG.
  • the manufacturing apparatus 40 forms an elongated resin sheet S by continuously extruding the raw material resin from the extruder 41 in a sheet state, and an extruder 41 that extrudes the raw material resin of the light guide plate base material portion 11 that is in a heated and melted state. And a first pressing roll 43A, a second pressing roll 43B, and a third pressing roll 43C that are sequentially spaced from each other on the downstream side of the die 42.
  • An example of the die 42 is a T die.
  • FIG. 5 is a flowchart of the method for manufacturing the light guide plate. As shown in FIG. 5, the method for manufacturing the light guide plate 10 includes a resin sheet manufacturing step S10, a transporting step S11, a printing step S12, and a cutting step S13. Each step will be described.
  • the resin sheet S is manufactured using the manufacturing apparatus 40. Specifically, the raw material resin is charged into the resin charging port 41 a of the extruder 41. The extruder 41 melts and kneads the charged raw material resin. Thereafter, the extruder 41 supplies the melted and mixed raw material resin to the die 42 and continuously extrudes it from the die 42 into a sheet shape to form the resin sheet S.
  • the resin sheet S discharged from the die 42 passes between the first pressing roll 43A and the second pressing roll 43B. At this time, the resin sheet S is sandwiched between the first pressing roll 43A and the second pressing roll 43B in the thickness direction and pressed by them. The resin sheet S that has passed between the first pressing roll 43A and the second pressing roll 43B is then pressed between the second pressing roll 43B and the third pressing roll 43C.
  • the resin sheet S that has passed through the third pressing roll 43C has flexibility. Therefore, as shown in FIG. 4, the resin sheet S that has passed through the third pressing roll 43C is wound into a roll.
  • Print step S12 A plurality of light scattering portions 12 are printed on the main surface of the resin sheet S while pulling out the resin sheet S from the resin sheet roll.
  • An example of the printing method is the above-described method (for example, ink jet printing).
  • the light guide plate 10 is obtained by cutting the resin sheet S on which the main surface is printed into a predetermined size.
  • the cutting of the resin sheet S can be performed using a cutting machine similar to the cutting machine 44.
  • the light guide plate 10 Since the light guide plate 10 has flexibility, the light guide plate 10 can be wound around the roll 50 as schematically shown in FIGS. 3 and 9. As a result, for example, even the light guide plate 10 used in a large transmissive image display device such as a liquid crystal display device of 32 inches or more can be easily transported. In particular, when the light guide plate 10 has the flexibility as illustrated, the state of being wound into a roll is likely to be more compact and easy to carry. Moreover, in the illustrated manufacturing method, the light guide plate base material portion 11 can be wound into a roll shape and transported to a subsequent process, so that it is easy to transport the light guide plate.
  • the back surface 11c of the light guide plate base material portion 11 when a plurality of light scattering portions 12 are formed on the back surface 11c of the light guide plate base material portion 11 by a printing method or the like, the back surface 11c itself is used for scattering such as an uneven shape. Less stress concentration at the position of the light scattering portion 12 when the light guide plate 10 is curved than when the processing is performed or when the light scattering portion is embedded in the light guide plate base material portion 11 it can. As a result, the durability of the light guide plate 10 can be improved.
  • the transmissive image display device including the light guide plate 10 can also be a flexible transmissive image display device.
  • FIG. 6 is a schematic diagram showing a schematic configuration of a transmissive image display device to which the light guide plate 10 is applied.
  • the cross-sectional configuration of the transmissive image display device 1 is shown in an exploded manner.
  • the transmissive image display device 1 can be suitably used as a mobile phone, a display device of various electronic devices, a television device, and the like.
  • the transmissive image display device 1 includes a light guide plate 10, a light source unit 2 disposed on the side of the light guide plate 10, and a transmissive image display unit disposed on the front side of the light guide plate 10 (upper side in FIG. 1). 3. At least one optical film can be disposed between the light guide plate 10 and the transmissive image display unit 3. Examples of the optical film include a diffusion film, a prism film, and a brightness enhancement film. The optical film has flexibility.
  • the light source unit 2 includes a plurality of point light sources 2A arranged in a line.
  • An example of the point light source 2A is a light emitting diode.
  • the light source unit 2 is not limited to a point light source, and may be a linear light source such as a fluorescent lamp (cold cathode ray lamp).
  • the light source unit 2 may include a reflector that reflects light on the side opposite to the light guide plate 10 in order to efficiently make light incident on the light guide plate 10 side.
  • the light guide plate 10 and the light source unit 2 shown in FIG. 6 constitute a surface light source device 4 that supplies planar light to the transmissive image display unit 3.
  • the optical film may be regarded as a component of the surface light source device 4.
  • the transmissive image display unit 3 is illuminated with planar light emitted from the light guide plate 10 and displays an image.
  • An example of the transmissive image display unit 3 is a liquid crystal display panel as a polarizing plate bonding body in which linear polarizing plates are arranged on both surfaces of a liquid crystal cell.
  • the transmissive image display unit 3 has flexibility.
  • the transmissive image display unit 3 having flexibility can be realized by using a soft plastic instead of a glass substrate used in a conventional liquid crystal display panel or the like.
  • the transmissive image display unit 3, the light guide plate 10, the light source unit 2, and the like can be bent by providing flexibility.
  • a flexible housing can be realized by using a resin having flexibility.
  • the housing that holds the transmissive image display unit 3, the light guide plate 10, the light source unit 2, and the like includes a front frame that holds the transmissive image display unit 3, and a rear side that holds the light guide plate 10 and the light source unit 2. Frame.
  • the front side frame is fixed to the back side frame.
  • the printing step S12 may be performed before the transporting step S11.
  • the light scattering unit 12 is printed on the main surface of the resin sheet S by the printing unit 45 before the continuous resin sheet that has passed through the third pressing roll 43 ⁇ / b> C is wound into a roll shape.
  • the display of the light scattering unit 12 is omitted.
  • the printing unit 45 is a device that performs the above-described printing method.
  • the printing unit 45 includes an inkjet head.
  • the flexible light guide plate 10 can be manufactured by using a material having flexibility as the material of the light guide plate 10 without providing the transport step S11 for transporting the resin sheet S in a roll shape.
  • a cutting step S13 that cuts the resin sheet S may be performed.
  • FIGS. 3 and 9 show an example of how to wind the light guide plate 10 in a roll shape, but the way of winding the light guide plate 10 is not limited to the form shown in FIGS. 3 and 9.
  • the light guide plate 10 may be wound so that the light scattering portion 12 is positioned inside. That is, when the light guide plate 10 is wound in a roll shape, either the emission surface 11b or the back surface 11c of the light guide plate base material portion 11 may face inward.
  • the light guide plate base material portion 11 and the light scattering portion 12, particularly the light scattering portion 12, are illustrated with a large size.
  • the thickness of the light scattering portion 12 is usually 100 ⁇ m or less and often 50 ⁇ m or less. That is, when the flexibility of the light guide plate 10 is defined by the innermost radius when the light guide plate 10 is wound in a roll shape, the thickness of the light scattering portion 12 is small enough to be ignored. Therefore, even if the light guide plate 10 is wound around the roll 50 as the core so that the light scattering portion 12 is inside, the radius of the roll 50 is wound into a roll shape as in the case of FIGS.
  • the innermost radius of the light guide plate 10 may be considered.
  • the radius may be determined based on the back surface 11c of the light guide plate base material portion 11. 3, 8, 9, and 10, the light guide plate 10 is wound around a roll 50 as a core.
  • the light guide plate 10 is wound so that the light scattering portion 12 is on the inner side. The same applies to the case where the roll 50 as the core is not used.
  • a plurality of convex portions may be formed on the emission surface 11b.
  • Each convex portion extends in the light guide direction of the light incident from the incident surface 11a, that is, the direction from the incident surface 11a toward the side surface 11d.
  • Examples of the shape of the cross section of the convex portion orthogonal to the extending direction of the convex portion include a lens shape such as a lenticular lens and a prism shape.
  • the plurality of convex portions are arranged in parallel in a direction orthogonal to the light guide direction.
  • Such a convex part forms the transfer type
  • the straightness of light incident on the light guide plate 10 is improved.
  • local dimming control can be performed when the light guide plate 10 is used in the transmissive image display device 1.
  • one side surface is illustrated as the incident surface 11a of the light guide plate base material portion 11
  • light may be incident on the light guide plate base material portion 11 from a side surface other than the illustrated incident surface 11a.
  • the side surface 11d can also function as an incident surface.
  • either one or both of the other two side surfaces that intersect (for example, orthogonal to) the incident surfaces 11a and 11d in the light guide plate base material portion 11 may function as the incident surface.
  • SYMBOLS 1 Transmission type image display apparatus, 2 ... Light source part, 3 ... Transmission type image display part, 4 ... Surface light source device, 10 ... Light guide plate, 11 ... Light guide plate base material part, 11a ... Incident surface, 11b ... Output surface, 11c ... back surface, 12 ... light scattering portion, 20 ... sample (measuring base material portion), 20a ... incidence surface, 20b ... side surface.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)
PCT/JP2013/065498 2012-12-05 2013-06-04 導光板、面光源装置、透過型画像表示装置及び導光板の製造方法 WO2014087688A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201380062839.1A CN104903641A (zh) 2012-12-05 2013-06-04 导光板、面光源装置、透射式图像显示装置以及导光板的制造方法
KR1020157017742A KR20150091398A (ko) 2012-12-05 2013-06-04 도광판, 면광원 장치, 투과형 화상 표시 장치 및 도광판의 제조 방법

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JP2012266481A JP2014112487A (ja) 2012-12-05 2012-12-05 導光板
JP2012-266481 2012-12-05

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JP (1) JP2014112487A (zh)
KR (1) KR20150091398A (zh)
CN (1) CN104903641A (zh)
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Cited By (1)

* Cited by examiner, † Cited by third party
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US10823903B2 (en) 2016-09-21 2020-11-03 Exa Electronics Co., Ltd. Lighting member using light-guiding film

Families Citing this family (8)

* Cited by examiner, † Cited by third party
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JP6415239B2 (ja) * 2014-10-21 2018-10-31 株式会社クラレ 光透過性皮革調シート、皮革調発光シート、及び皮革調発光ベルト
CN105353440A (zh) * 2015-11-13 2016-02-24 重庆鑫翎创福光电科技股份有限公司 一种采用ms材质且出光面具有大圆点结构的导光板
CN105353441A (zh) * 2015-11-13 2016-02-24 重庆鑫翎创福光电科技股份有限公司 一种采用pmma材质且出光面具有大圆点结构的导光板
CN105353442A (zh) * 2015-11-13 2016-02-24 重庆鑫翎创福光电科技股份有限公司 一种具有凸起结构的ps材质导光板
CN107703672A (zh) * 2017-11-21 2018-02-16 武汉华星光电技术有限公司 阵列基板及其制作方法、柔性显示面板、柔性显示器
CN109080100B (zh) * 2018-08-07 2021-12-03 浙江建设职业技术学院 一种智能讲台背投膜加工装置及方法
JP7313000B2 (ja) * 2019-02-27 2023-07-24 パナソニックＩｐマネジメント株式会社 照明装置
DE102019105068B4 (de) * 2019-02-28 2021-11-11 Sll Service Gmbh Leuchtkasten und Leuchtkastengruppe hiermit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004288570A (ja) * 2003-03-25 2004-10-14 Toshiba Corp バックライト及びそれを用いた液晶ディスプレイ装置
JP2005005062A (ja) * 2003-06-10 2005-01-06 Yuka Denshi Co Ltd 面光源装置及びそれを用いた表示装置
JP2012212612A (ja) * 2011-03-31 2012-11-01 Nippon Zeon Co Ltd 導光部材及びバックライト装置
JP2012234692A (ja) * 2011-04-28 2012-11-29 Sumitomo Chemical Co Ltd 光学シート

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1853068A (zh) * 2003-09-19 2006-10-25 索尼株式会社 背光装置和液晶显示装置
JP4762217B2 (ja) * 2007-09-28 2011-08-31 富士フイルム株式会社 導光板、導光板ユニットおよび面状照明装置
JP5437652B2 (ja) * 2009-01-30 2014-03-12 恵和株式会社 導光シート及びこれを用いたバックライトユニット
KR101047754B1 (ko) * 2009-08-21 2011-07-07 희성전자 주식회사 측면 조광형 백라이트 장치
US20110242847A1 (en) * 2010-04-06 2011-10-06 Skc Haas Display Films Co., Ltd. Laminated double-sided light guide plate
US20120050874A1 (en) * 2010-08-31 2012-03-01 Skc Haas Display Films Co., Ltd. Optical sheet having printed double-sided light guide plate
JP2012128178A (ja) * 2010-12-15 2012-07-05 Dainippon Printing Co Ltd 光学シート、面光源装置及び液晶表示装置
TWI530384B (zh) * 2011-03-18 2016-04-21 光展應材股份有限公司 導光膜捲對捲製造方法及其構造
KR101102131B1 (ko) * 2011-07-12 2012-01-02 레이젠 주식회사 인라인 압출 패턴 성형 장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004288570A (ja) * 2003-03-25 2004-10-14 Toshiba Corp バックライト及びそれを用いた液晶ディスプレイ装置
JP2005005062A (ja) * 2003-06-10 2005-01-06 Yuka Denshi Co Ltd 面光源装置及びそれを用いた表示装置
JP2012212612A (ja) * 2011-03-31 2012-11-01 Nippon Zeon Co Ltd 導光部材及びバックライト装置
JP2012234692A (ja) * 2011-04-28 2012-11-29 Sumitomo Chemical Co Ltd 光学シート

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10823903B2 (en) 2016-09-21 2020-11-03 Exa Electronics Co., Ltd. Lighting member using light-guiding film

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