CN104903641A - Light guide plate, planar light source apparatus, transmissive image display apparatus, and light guide plate manufacturing method - Google Patents
Light guide plate, planar light source apparatus, transmissive image display apparatus, and light guide plate manufacturing method Download PDFInfo
- Publication number
- CN104903641A CN104903641A CN201380062839.1A CN201380062839A CN104903641A CN 104903641 A CN104903641 A CN 104903641A CN 201380062839 A CN201380062839 A CN 201380062839A CN 104903641 A CN104903641 A CN 104903641A
- Authority
- CN
- China
- Prior art keywords
- guide plate
- light guide
- light
- incidence
- base part
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention discloses a light guide plate, a planar light source apparatus, a transmissive image display apparatus, and a light guide plate manufacturing method. According to one embodiment of the present invention, a light guide plate outputs light, as planar light, from a light output surface intersecting a light input surface, said light having been inputted from the light input surface. The light guide plate is provided with a light guide plate base material section, which has the light input surface and the light output surface, and which is formed of a transparent and flexible material.
Description
Technical field
The present invention relates to the manufacture method of light guide plate, planar light source device, transmission-type image display device and light guide plate.
Background technology
The transmission-type image displaying part such for liquid crystal panel, transmission-type image displaying part itself is not luminous, but shows image by the planar light source device illumination arranged in addition.The example of planar light source device is such as the side-light type planar light source device be made up of with the light source portion being configured at its side light guide plate.The transmission-type image display device possessing above-mentioned transmission-type image displaying part and planar light source device is widely known by the people.
In recent years, the display unit of the flexibility (flexible) being applied to Electronic Paper etc. is sought.Such as, the Autoluminescence display unit (with reference to patent document 1) using organic EL (Organic Electro-Luminescence: the electronic edition of organic light emission) is known to
Patent document 1: Japanese Unexamined Patent Publication 2004-11879 publication
In the Autoluminescence display unit using organic EL, be known to flexible device, recently, in the non-luminescent formula display unit adopting the such transmission-type image displaying part of liquid crystal panel, seek flexible device.In order to non-luminescent formula display unit being designed to flexible device, light guide plate also needs for flexibility.
Summary of the invention
Therefore, the object of the present invention is to provide the manufacture method of a kind of light guide plate of flexibility, the planar light source device possessing this light guide plate, transmission-type image display device and this light guide plate.
The light guide plate of a mode of the present invention is using from the light of plane of incidence incidence from the exit facet intersected with the plane of incidence as the light guide plate that the light of planar penetrates.This light guide plate possesses light guide plate base part, and this light guide plate base part has the plane of incidence and exit facet, and is made up of the transparent and material with flexibility.
Light guide plate base part is made up of the transparent and material of softness, and therefore light guide plate can have flexibility.
In one embodiment, can also possess multiple light scattering portion in light guide plate base part, described light scattering portion is arranged on the back side being positioned at the side contrary with exit facet, make from the light of plane of incidence incidence at least partially to exit facet sidescattering.
In one embodiment, the material of light guide plate base part can be the full light transmittance of the mensuration base part be made up of this material is the material of more than 80%.In this case, the plan view shape of mensuration base part is the length of long side direction is the cuboid of 250mm.In addition, the amount of the light penetrated from the first incident sideways orthogonal with long side direction and from the second side of the side contrary with the first side is being set to Q
out, the amount of the light being incident in the first side is set to Q
intime, full light transmittance Q
out/ Q
indefine.
In one embodiment, following flexibility can be had, namely by during light guide plate wound into rolls the radius of inner side be below 2.5cm.
In one embodiment, the thickness of light guide plate base part can be below 0.7mm.
In one embodiment, multiple light scattering portion can also be possessed in light guide plate base part, described light scattering portion is arranged on the back side being positioned at the side contrary with exit facet, make from the light of plane of incidence incidence at least partially to exit facet sidescattering, this light scattering portion can be the roughly rounded light scattering point of plan view shape.In this case, when the thickness of light guide plate base part being set to D, the diameter in light scattering portion being set to F, F/D can be less than 0.33.
The planar light source device of other modes of the present invention, possesses: the light source of the light guide plate of a mode of the invention described above and the plane of incidence supply light to light guide plate.
The transmission-type image display device of other modes another of the present invention, possesses: the light guide plate of a mode of the invention described above; To the light source of the plane of incidence supply light of light guide plate; And the light accepted from the planar of light guide plate show the transmission-type image displaying part of image.
The method of the manufacture light guide plate of other modes more of the present invention manufactures transparent and has flexibility and penetrate the method for the light guide plate of the light as planar from the exit facet intersected with the plane of incidence.The method of this manufacture light guide plate possesses following operation: extruded continuously in the molten state transparent the and thermoplastic resin of softness, manufacture the operation of resin sheet; Resin sheet wound into rolls is carried out the operation of carrying; Print the operation in multiple light scattering portion at the interarea of resin sheet, this light scattering portion for make from the light of plane of incidence incidence at least partially to exit facet sidescattering; The operation of light guide plate is obtained by the size resin sheet being printed with multiple light scattering portion being cut into regulation.
The thermoplastic resin of molten condition is extruded and is formed by resin sheet continuously, therefore longer in extrusion direction.The resin sheet wound into rolls longer by this is also carried, and therefore such as in the fabrication process, when carrying resin sheet, transport operation is easy to.
According to the present invention, the manufacture method of flexible light guide plate, the planar light source device possessing this light guide plate, transmission-type image display device and this light guide plate can be provided.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the light guide plate of an embodiment.
Fig. 2 is the accompanying drawing for illustration of full light transmittance.
Fig. 3 is the schematic diagram that the light guide plate represented by Fig. 1 is wound in the state of roller.
Fig. 4 is the accompanying drawing of the schematic configuration of an example of the device representing the light guide plate that shop drawings 1 represents.
Fig. 5 is the flow chart of the manufacture method of light guide plate.
Fig. 6 is the schematic diagram of the schematic configuration of the transmission-type image display device representing application light guide plate.
Fig. 7 is the accompanying drawing of the variation of the manufacture method representing light guide plate.
Fig. 8 is the accompanying drawing of the variation of the method for winding representing light guide plate.
Fig. 9 is the schematic diagram that the variation of the light guide plate represented by Fig. 1 is wound in the state of roller.
Figure 10 is the figure of the another variation of the method for winding representing light guide plate.
Detailed description of the invention
Referring to accompanying drawing, an embodiment of the invention are described.In the description of the drawings, identical Reference numeral is marked to identical element, and the repetitive description thereof will be omitted.The dimension scale of accompanying drawing may not with illustrate consistent.In explanation, represent " on ", the word in the direction such as D score is the word easily representing state based on accompanying drawing.
Fig. 1 is the schematic diagram of the light guide plate of an embodiment.Light guide plate 10 possesses the light guide plate base part 11 in tabular.Light guide plate base part 11 has: for the plane of incidence 11a of light incidence; By the exit facet 11b that light penetrates; And be positioned at the back side 11c of the side contrary with exit facet 11b.Plane of incidence 11a intersects the side of (in FIG, orthogonal with exit facet 11b and back side 11c) with exit facet 11b and back side 11c.Plane of incidence 11a plays a role as the plane of incidence of light guide plate 10.Exit facet 11b plays a role as the exit facet of light guide plate 10.The example of the plan view shape (shape from thickness direction is observed) of light guide plate base part 11, comprises rectangle and square.Light from plane of incidence 11a incidence is carried out leaded light towards the side of the side contrary with plane of incidence 11a by light guide plate base part 11.Below by from plane of incidence 11a towards the direction of side 11d also referred to as light conducting direction.
11c is provided with multiple light scattering portion 12 overleaf.Light scattering portion 12 makes the light scattering from plane of incidence 11a incidence.Thus from plane of incidence 11a incident and light scattering portion 12 scattering light at least partially, propagate towards exit facet 11b side.That is, from the light of plane of incidence 11a incidence at least partially by light scattering portion 12 to exit facet 11b lateral reflection.The configuration status in multiple light scattering portion 12 and the shape in each light scattering portion 12 are set as making the light penetrated from exit facet 11b have the characteristic of expection.Such as, the configuration status in multiple light scattering portion 12 and the shape in each light scattering portion 12 are set as: the light that can penetrate uniform brightness from exit facet 11b.The example in light scattering portion 12 can comprise the light scattering point etc. of lenticular, tetrapyamid shape and tabular.Light scattering portion 12 can be convex, also can be concavity.Light scattering portion 12 can be protuberance or the recess of the direction extension that 11c edge is orthogonal with light conducting direction overleaf.In this case, multiple light scattering portion 12 configures side by side along light conducting direction.Diffusion particle also can be contained in light scattering portion 12.
Light scattering portion 12 such as can be formed by print process.The example forming the print process in light scattering portion 12 can comprise serigraphy (silk printing), ink jet printing and screen printing (screen printing).In addition, as shown in Figure 9, light scattering portion 12 also can be formed as concavity by irradiating the method for laser, also can is formed with small concavo-convex pressing mold (stamper) by pressing and is formed as concavity or convex.
In the method utilizing ink jet printing, less light scattering portion 12 can be formed.If light scattering portion 12 is little, even if then the thickness of light guide plate 10 is thin, be also difficult to see light scattering portion 12 from exit facet 11b side.Before enforcement ink jet printing, as pretreatment, water-proofing treatment can be implemented to the back side 11c of light guide plate base part 11.The example of the material in light scattering portion 12 can comprise white ink, ultraviolet curable resin etc.
Can comprise in the example of water-proofing treatment: the process etc. that the process be used as the process of the surface modifier of waterproof finishing agent, utilizing various energy line to carry out, the process utilizing chemisorbed to carry out and the glycerol polymerization utilizing material surface are carried out.
The process of surface modifier is used to be that the upper formation of 11c is added with the process of the watertight composition of a small amount of surface modifier overleaf.As the example of the surface modifier of waterproof finishing agent, side chain can be included in there is the vinyl polymers of perfluoroalkyl (Rf yl) and the silicone etc. containing Rf base.Watertight composition can by surface modifier is infiltrated paper cloth etc. and be coated on back side 11c or by surface modifier by spraying, ink jet printing and be sprayed at the methods such as back side 11c and formed.
The process utilizing various energy line to carry out utilizes energy line to make back side 11c with the process of water proofing property.The example of energy line can comprise plasma, electron beam and ion beam etc.Can comprise in the example of the water-proofing treatment when utilizing plasma treatment: by plasma, etching and after making back side 11c alligatoring, form the monomolecular film of such as water proofing property on the surface of alligatoring; The fluoridizing of the back side 11c utilizing fluorine type gas plasma to carry out, by plasma CVD (Chemical Vapor Deposition), the tunicle be made up of waterproofing compound is formed at back side 11c; By plasma polymerization, water proofing property film is formed on the 11c of the back side.
The example of the process utilizing surface coarsening to carry out can comprise: give concaveconvex shape by hot pressing to back side 11c, utilize medicine to etch and blasting treatment etc.
In the process utilizing chemisorbed to carry out, the end of fluorine to binding molecule is preferably used to modify.Particularly from the view point of water proofing property, preferred CF3 base is as the sub stituent of end.
In the example of such process, from can be easy and carry out the consideration of surface treatment this point equably, fluorine system gaseous plasma be preferably utilized to carry out fluoridizing of back side 11c.
When implementing ink jet printing, as its pretreatment, hydrophilicity-imparting treatment can be implemented to the back side 11c of light guide plate base part 11.The example of hydrophilicity-imparting treatment can comprise Ultraviolet radiation, with the contact of ethanol and plasma treatment etc.Ultraviolet radiation can use Cooper-Hewitt lamp, metal halide lamp etc. to carry out.Ultraviolet radiation can carry out under air ambient, also can carry out under ozone environment.The surface of acrylic resin sheet and the contact of ethanol, such as can by using the fiber base materials such as the cloth of infiltration alcohol, and the method on the surface of wiping acrylic resin sheet is carried out.As alcohol, such as, can use isopropyl alcohol (IPA).The example of plasma treatment is sided corona treatment.
Below, the structure of light guide plate 10 is described in detail.Light guide plate 10 is flexible light guide plate 10.Specifically, light guide plate base part 11 is transparent and have flexibility.Light guide plate base part 11 is made up of the transparent and material of softness.More specifically, light guide plate base part 11 is made up of so-called elastomer.The example of the material of light guide plate base part 11 comprises: acrylic resin, phenylethylene resin series, polymethyl methacrylate (PMMA) resin, polystyrene (PS) resin, MS (copolymer of methyl methacrylatestyrene) resin, polycarbonate resin, AS (acrylonitritrile-styrene resin) resin, cyclenes system resin, polyvinyl resin, acrylic resin and poly-to stupid dicarboxylic acid ethyl ester resin etc.The material of light guide plate base part 11 can be preferably the block copolymer of the bright olefin(e) acid formicester of methyl and butyl acrylate.In one embodiment, light guide plate base part 11 can be one or both sides stacked polycarbonate resin bed at acrylic resin and the sheet-like formed thing formed.Without departing from the scope of the subject in the invention, light guide plate base part 11 can comprise the additives such as light diffusing agent, ultra-violet absorber, anti-live agent, antioxidant, processing stabilizers, fire retardant, lubricant.
Light guide plate 10 be can carry out under the spendable degree of light guide plate 10 guide-lighting transparent.In one embodiment, use the material identical with the material (base material) forming light guide plate base part 11, make the sample (mensuration base part) 20 of regulation, the full light transmittance Tt of this sample 20 is more than 80%, is preferably more than 85%.
The assay method of Fig. 2 to full light transmittance Tt is utilized to be described.Fig. 2 is the key diagram for illustration of full light transmittance.First, utilize the material identical with light guide plate base part 11, preparation length be 250mm, width is 40mm, sample 20 that thickness is the size of 2mm.For these samples 20, make light be incident in side (the first side) 20a of a side from light source portion 30, and utilize test section 31 to measure the light that side (the second side) 20b from (the contrary side of this side 20a) the opposing party opposed with this side 20a penetrates.Test section 31 is such as the long light-path analyzer (U-4100) that Hitachi of joint-stock company new and high technology manufactures.If the amount of light to the side 20a incidence becoming the plane of incidence is set to Q
in, the amount of the light of 20b output is from the side set to Q
out, then full light transmittance Tt can pass through following formula (2) and represents.
Tt＝Q
out/Q
in…(2)
In light guide plate 10, as shown in Figure 1, when the thickness of light guide plate base part 11 is set to D, in one embodiment, thickness D is preferably 0.1mm ~ 0.7mm, is more preferably 0.2mm ~ 0.4mm.
In one embodiment, light guide plate 10 preferably has following flexibility, that is: when by light guide plate 10 wound into rolls, the radius of inner side is the flexibility of below 2.5cm, and the radius more preferably with inner side is the flexibility of below 1.5cm.Fig. 3 and Fig. 9 is utilized to specifically describe.Under Fig. 3 and Fig. 9 is shown schematically in state light guide plate being wound in roller, cross-section structure when cutting with the section orthogonal with the center line of roller.When light guide plate 10 to be wound in radius be roller 50 of R, preferred light guide plate 10 has light guide plate 10 can be made to be wound in closely flexibility that radius R is the degree of the roller 50 of below 2.5cm, and more preferably light guide plate 10 has and light guide plate 10 can be wound in closely the flexibility that radius R is the degree of the roller 50 of below 1.5cm.If light guide plate base part 11 has identical flexibility, then the flexibility as described above of light guide plate 10 can realize.
As shown in Figure 1, when light scattering portion 12 is the light scattering point of lenticular or dome shape, the plan view shape (shape from the thickness of slab direction of light guide plate base part 11 is observed) of light scattering point is roughly circle.Like this, when diameter plan view shape being roughly circular light scattering portion 12 is set to F, in one embodiment, F/D is preferably less than 0.33, is more preferably less than 0.13.
The manufacturing installation that the light guide plate 10 of said structure can utilize Fig. 4 to represent manufactures.Fig. 4 is the accompanying drawing of the schematic configuration of an example of the device representing the light guide plate that shop drawings 1 represents.Light guide plate 10 is the manufacturing installations 40 utilizing Fig. 4 to represent, molding by extrusion and manufacture.
Manufacturing installation 40 is configured to mainly comprise: extruder 41, and the material resin of the light guide plate base part 11 of heating and melting state is extruded by it; Die head (die) 42, the material resin of its machine of self compaction in the future 41 is extruded with sheet state continuously and forms rectangular resin sheet S; And be separated from each other and the first compression roller 43A configured successively, the second compression roller 43B and the 3rd compression roller 43C in the downstream of die head 42.The example of die head 42 is T-shaped die head.
Fig. 5 is the flow chart of the manufacture method of light guide plate.As shown in Figure 5, the method manufacturing light guide plate 10 comprises: resin sheet manufacturing process S10, carrying operation S11, printing process S12 and cutting action S13.Each operation is described.
(resin sheet manufacturing process S10)
Manufacturing installation 40 is utilized to manufacture resin sheet S.Specifically, material resin is put into the resin input port 41a of extruder 41.Extruder 41 carries out melting mixing to the material resin dropped into.Then, the material resin after melting mixing is supplied to die head 42 by extruder 41, and extrudes continuously as sheet from die head 42, thus forms resin sheet S.
From the resin sheet S that die head 42 is discharged, by between the first compression roller 43A and the second compression roller 43B.Now, resin sheet S is clipped in a thickness direction by the first compression roller 43A and the second compression roller 43B, and by they extruding.Resin sheet S after passing through between the first compression roller 43A and the second compression roller 43B, is then extruded between the second compression roller 43B and the 3rd compression roller 43C.
By the resin sheet S after the 3rd compression roller 43C, there is flexibility.Therefore as shown in Figure 4, the resin sheet S wound into rolls after the 3rd compression roller 43C will be passed through.
(carrying operation S11)
After the resin sheet S wound into rolls of certain constant length, cutting resin sheet S.The cutting machine 44 in the downstream being configured at the 3rd compression roller 43C can be used, implement the cutting of resin sheet S.Then, the resin sheet S of web-like is carried to the place of implementing printing process.The resin sheet S of wound into rolls is called that resin sheet is rolled up.
(printing process S12)
While extract resin sheet S out, while print multiple light scattering portion 12 at the interarea of resin sheet S from resin sheet volume.The example of printing process is above-mentioned method (such as, ink jet printing etc.).
(cutting action S13)
By the resin sheet S implementing printing at interarea being cut into the size of regulation, thus obtain light guide plate 10.The cutting of resin sheet S can utilize the cutting machine same with cutting machine 44 to carry out.
In the light guide plate 10 of said structure, from the light of the plane of incidence 11a incidence of light guide plate base part 11, specifically carry out being totally reflected propagating in light guide plate base part 11 in light guide plate 10.In its communication process, if light is in light scattering portion 12 scattering, then the light propagated by light scattering portion 12 scattering and to exit facet 11b side, penetrates from exit facet 11b.Propagate in light guide plate 10 from the light of plane of incidence 11a incidence, and its part penetrates from exit facet 11b, thus the light of planar can be penetrated from exit facet 11b.
Light guide plate 10 has flexibility, therefore as schematically represented in Fig. 3 and Fig. 9, light guide plate 10 can be wound in roller 50.Its result, even the light guide plate 10 that the large-scale like this transmission-type image display device of the such as liquid crystal indicator of more than 32 inches uses, also easily carries.Particularly when light guide plate 10 has illustrative flexibility, the state of wound into rolls easily becomes compacter, thus easily carries.In addition, in illustrative manufacture method, owing to light guide plate base part 11 wound into rolls can be carried to subsequent handling, carrying when therefore manufacturing light guide plate is also easy.
As shown in Figure 1, when being formed with multiple light scattering portion 12 by print process etc. on the back side 11c of light guide plate base part 11, with back side 11c itself is implemented the such processing for scattering of concaveconvex shape situation, being embedded with compared with the situation etc. in light scattering portion in light guide plate base part 11, the stress that can relax when making light guide plate 10 bending in the position in light scattering portion 12 is concentrated.Its result can realize the raising of the durability of light guide plate 10.
In addition, because light guide plate 10 has flexibility, the transmission-type image display device therefore possessing light guide plate 10 also can become flexible transmission-type image display device.
Fig. 6 is the schematic diagram of the schematic configuration representing the transmission-type image display device using light guide plate 10.In figure 6, the cross-section structure of transmission-type image display device 1 is represented with decomposing.Transmission-type image display device 1 suitably can utilize as the display unit of mobile phone, various electronic equipment and television equipment etc.
Transmission-type image display device 1 possesses: light guide plate 10, be configured at the light source portion 2 of the side of light guide plate 10 and be configured at the transmission-type image displaying part 3 of face side (upside in Fig. 1) of light guide plate 10.At least a slice blooming can be configured between light guide plate 10 and transmission-type image displaying part 3.The example of blooming is that diffusion barrier, prism film and brightness improve film etc.Blooming has flexibility.
Light source portion 2 possesses the multiple spot light 2A being arranged as wire.The example of spot light 2A is light emitting diode.Light source portion 2 is not limited to spot light, also can be the such linear light source of fluorescent lamp (cold cathode line lamp).Light source portion 2, in order to light being incident in efficiently light guide plate 10 side, also can possess the reflecting piece of reverberation in the side contrary with light guide plate 10.
The light guide plate 10 that Fig. 6 represents and light source portion 2, form the planar light source device 4 supplying the light of planar to transmission-type image displaying part 3.When arranging blooming between transmission-type image displaying part 3 and light guide plate 10, blooming also can be considered as the inscape of planar light source device 4.
Transmission-type image displaying part 3 is by the optical illumination of planar that penetrates from light guide plate 10 and show image.The example of transmission-type image displaying part 3 is the display panels of the Polarizer fitting body being configured with linear polarization plate as the two sides at liquid crystal cell.Transmission-type image displaying part 3 has flexibility.There is flexible transmission-type image displaying part 3, the glass baseplate used in existing display panels etc. can being replaced to realize by utilizing flexible plastic.
In the transmission-type image display device 1 of said structure, make the framework of maintenance transmission-type image displaying part 3, light guide plate 10 and light source portion 2 etc. have flexibility, can bend thus.By forming by having flexible resin etc., therefore, it is possible to realize flexible framework.Usually, the framework of transmission-type image displaying part 3, light guide plate 10 and light source portion 2 etc. is kept to have: keep the face side framework of transmission-type image displaying part 3 and keep the rear side framework of light guide plate 10 and light source portion 2.Face side framework is fixed on rear side framework.
Above an embodiment of the invention are illustrated, but the present invention is not limited to above-mentioned embodiment, can various change be carried out in the scope of purport not departing from invention.
Such as, also printing process S12 can be implemented before carrying operation S11.In this case, as shown in Figure 7, before by the continuous resin sheet wound into rolls by the 3rd compression roller 43C, Printing Department 45 is utilized, in the interarea printing light scattering portion 12 of resin sheet S.In the figure 7, the expression in light scattering portion 12 is omitted.Printing Department 45 is the devices carrying out above-mentioned printing process, and such as, when ink jet printing, Printing Department 45 comprises ink gun.
Or, even if do not possess resin sheet S wound into rolls and carry out the carrying operation S11 that carries, as long as the materials'use of light guide plate 10 has flexible material, just can manufacturing flexible light guide plate 10.In this case, such as also to after implementing printing treatment by the resin sheet S after the 3rd compression roller 43C, the cutting action S13 of cutting resin sheet S can be implemented.Or, also after obtaining light guide plate base part 11, printing process S12 can be implemented to light guide plate base part 11 implementing cutting action S13 to resin sheet S.
Represent an example of method for winding when light guide plate 10 wound into rolls in Fig. 3 and Fig. 9, but the method for winding of light guide plate 10 is not limited to the mode that Fig. 3 and Fig. 9 represents.Such as, as shown in Fig. 8 and Figure 10, the mode that also can be positioned at inner side with light scattering portion 12 reels light guide plate 10.That is, when by light guide plate 10 wound into rolls, the exit facet 11b of light guide plate base part 11 and any surface of back side 11c can towards inner sides.This is with as represented in Fig. 7, and the situation that winding is printed with the resin sheet S in light scattering portion 12 is identical.
In Fig. 3, Fig. 8, Fig. 9 and Figure 10, in order to conclusively show the structure of light guide plate 10, enlarged drawing illustrates light guide plate base part 11 and light scattering portion 12 emphatically, especially light scattering portion 12.But the thickness in light scattering portion 12 is such as generally less than 100 μm, is mostly less than 50 μm.That is, when with by during the state of light guide plate 10 wound into rolls, the radius of inner side carrys out the flexibility of regulation light guide plate 10, the little degree to ignoring of thickness in light scattering portion 12.Even if light guide plate 10 is wound in roller 50 as core by the mode therefore becoming inner side using light scattering portion 12, also identical with the situation of Fig. 3 and Fig. 9, the radius of roller 50 can be considered as the radius of the inner side of the light guide plate 10 of wound into rolls.Or, the mode inside becoming with light scattering portion 12 is by light guide plate 10 wound into rolls, also can with the back side 11c of light guide plate base part 11 for benchmark decides above-mentioned radius.Represent state light guide plate 10 being wound in the roller 50 as core in Fig. 3, Fig. 8, Fig. 9 and Figure 10, but the mode inside can becoming with light scattering portion 12 reels, the situation of light guide plate 10, identical with the situation of the roller 50 not being used as core.
Also multiple protuberance can be formed with at exit facet 11b.Each protuberance, along the light conducting direction of the light from plane of incidence 11a incidence, namely extends along from plane of incidence 11a towards the direction of side 11d.The example of the section shape of the protuberance orthogonal with the bearing of trend of protuberance, comprises the such lens shape of lens pillar and prism shape.Multiple protuberance configures side by side on the direction orthogonal with light conducting direction.Can be such as any one roller in the first compression roller 43A, the second compression roller 43B and the 3rd compression roller 43C, form the transfer mold for the formation of multiple protuberance, and utilize this transfer mold to form such protuberance.Possess multiple protuberance at exit facet 11b, thus improve the linearity being incident in the light of light guide plate 10.Its result, when transmission-type image display device 1 uses light guide plate 10, can carry out local dimming control.
In addition, the plane of incidence 11a as light guide plate base part 11 exemplifies a side, but also can by light from the incident sideways beyond illustrative plane of incidence 11a in light guide plate base part 11.Such as, side 11d also can play a role as the plane of incidence.And then the either one or both of (such as, orthogonal) other two sides intersected with the plane of incidence 11a, 11d in light guide plate base part 11, also can play a role as the plane of incidence.
Description of reference numerals: 1 ... transmission-type image display device; 2 ... light source portion; 3 ... transmission-type image displaying part; 4 ... planar light source device; 10 ... light guide plate; 11 ... light guide plate base part; 11a ... the plane of incidence; 11b ... exit facet; 11c ... the back side; 12 ... light scattering portion; 20 ... sample (mensuration base part); 20a ... the plane of incidence; 20b ... side.
Claims (9)
1. a light guide plate, penetrate from the light of plane of incidence incidence from the exit facet intersected with the described plane of incidence as the light of planar, the feature of described light guide plate is,
Possess light guide plate base part, this light guide plate base part has the described plane of incidence and described exit facet, and is made up of the transparent and material with flexibility.
2. light guide plate according to claim 1, is characterized in that,
Also possess multiple light scattering portion in described light guide plate base part, described light scattering portion is arranged on the back side being positioned at the side contrary with described exit facet, make from the light of described plane of incidence incidence at least partially to described exit facet sidescattering.
3. light guide plate according to claim 1 and 2, is characterized in that,
The described material of described light guide plate base part is the full light transmittance of the mensuration base part be made up of this material is the material of more than 80%,
The plan view shape of described mensuration base part is the length of long side direction is the cuboid of 250mm,
The amount of the light penetrated from the first incident sideways orthogonal with described long side direction and from the second side of the side contrary with described first side is being set to Q
out, the amount of the light being incident in described first side is set to Q
intime,
Described full light transmittance Q
out/ Q
indefine.
4. the light guide plate according to any one of claims 1 to 3, is characterized in that,
Have following flexibility, namely when wound into rolls, the radius of inner side is below 2.5cm.
5. the light guide plate according to any one of Claims 1 to 4, is characterized in that,
The thickness of described light guide plate base part is below 0.7mm.
6. the light guide plate according to any one of Claims 1 to 5, is characterized in that,
Also possess multiple light scattering portion in described light guide plate base part, described light scattering portion is arranged on the back side being positioned at the side contrary with described exit facet, make from the light of described plane of incidence incidence at least partially to described exit facet sidescattering,
Described light scattering portion is the roughly rounded light scattering point of plan view shape,
When the thickness of described light guide plate base part being set to D, the diameter in described light scattering portion being set to F, F/D is less than 0.33.
7. a planar light source device, is characterized in that, possesses:
Light guide plate according to any one of claim 1 ~ 6; And
Light source, it is to the described plane of incidence supply light of described light guide plate.
8. a transmission-type image display device, is characterized in that, possesses:
Light guide plate according to any one of claim 1 ~ 6;
Light source, it is to the described plane of incidence supply light of described light guide plate; And
Transmission-type image displaying part, it accepts the light from the planar of described light guide plate and shows image.
9. a manufacture method for light guide plate, be manufacture transparent and have flexibility and penetrate the method for the light guide plate of the light as planar from the exit facet intersected with the plane of incidence, the feature of the manufacture method of described light guide plate is, possesses following operation:
Transparent and the thermoplastic resin of softness is extruded in the molten state continuously, manufactures the operation of resin sheet;
Described resin sheet wound into rolls is carried out the operation of carrying;
Print the operation in multiple light scattering portion at the interarea of described resin sheet, described light scattering portion for make from the light of described plane of incidence incidence at least partially to described exit facet sidescattering; And
The operation of light guide plate is obtained by the size resin sheet being printed with multiple described light scattering portion being cut into regulation.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-266481 | 2012-12-05 | ||
| JP2012266481A JP2014112487A (en) | 2012-12-05 | 2012-12-05 | Light guide plate |
| PCT/JP2013/065498 WO2014087688A1 (en) | 2012-12-05 | 2013-06-04 | Light guide plate, planar light source apparatus, transmissive image display apparatus, and light guide plate manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104903641A true CN104903641A (en) | 2015-09-09 |
Family
ID=50883123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380062839.1A Pending CN104903641A (en) | 2012-12-05 | 2013-06-04 | Light guide plate, planar light source apparatus, transmissive image display apparatus, and light guide plate manufacturing method |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2014112487A (en) |
| KR (1) | KR20150091398A (en) |
| CN (1) | CN104903641A (en) |
| TW (1) | TW201423178A (en) |
| WO (1) | WO2014087688A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353441A (en) * | 2015-11-13 | 2016-02-24 | 重庆鑫翎创福光电科技股份有限公司 | Light guide plate made of PMMA material and provided with light output surface with large round dot structures |
| CN105353442A (en) * | 2015-11-13 | 2016-02-24 | 重庆鑫翎创福光电科技股份有限公司 | Light guide plate of PS material and with projection structures |
| CN105353440A (en) * | 2015-11-13 | 2016-02-24 | 重庆鑫翎创福光电科技股份有限公司 | Light guide plate made of MS material and provided with light output surface with large round dot structures |
| CN107703672A (en) * | 2017-11-21 | 2018-02-16 | 武汉华星光电技术有限公司 | Array base palte and preparation method thereof, flexible display panels, flexible display |
| CN109080100A (en) * | 2018-08-07 | 2018-12-25 | 浙江建设职业技术学院 | A kind of Intelligent platform rear-projection film processing unit (plant) and method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6415239B2 (en) * | 2014-10-21 | 2018-10-31 | 株式会社クラレ | Light permeable leather-like sheet, leather-like luminescent sheet, and leather-like luminescent belt |
| EP3517826B1 (en) | 2016-09-21 | 2023-12-27 | EXA Electronics Co., Ltd. | Lighting member using light-guiding film |
| JP7313000B2 (en) * | 2019-02-27 | 2023-07-24 | パナソニックＩｐマネジメント株式会社 | lighting equipment |
| DE102019105068B4 (en) * | 2019-02-28 | 2021-11-11 | Sll Service Gmbh | Light box and light box group herewith |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004288570A (en) * | 2003-03-25 | 2004-10-14 | Toshiba Corp | Backlight and liquid crystal display device using the same |
| CN1853068A (en) * | 2003-09-19 | 2006-10-25 | 索尼株式会社 | Backlight device and liquid crystal display |
| US20090086506A1 (en) * | 2007-09-28 | 2009-04-02 | Fujifilm Corporation | Light guide plate, light guide plate unit, and planar lighting device |
| CN101793381A (en) * | 2009-01-30 | 2010-08-04 | 惠和株式会社 | Light guide sheet and backlight unit using the same |
| CN101994995A (en) * | 2009-08-21 | 2011-03-30 | 喜星电子株式会社 | Light guide board and side lighting backlight source device using the same |
| US20110242847A1 (en) * | 2010-04-06 | 2011-10-06 | Skc Haas Display Films Co., Ltd. | Laminated double-sided light guide plate |
| KR101102131B1 (en) * | 2011-07-12 | 2012-01-02 | 레이젠 주식회사 | Device for extrusion molding |
| CN102385099A (en) * | 2010-08-31 | 2012-03-21 | Skc哈斯显示器薄膜有限公司 | Optical sheet having printed double-sided light guide plate |
| CN102681082A (en) * | 2011-03-18 | 2012-09-19 | 傑诚应用材料股份有限公司 | Method for roll-to-roll manufacturing light guide film and structure thereof |
| JP2012212612A (en) * | 2011-03-31 | 2012-11-01 | Nippon Zeon Co Ltd | Light guide member and backlight device |
| JP2012234692A (en) * | 2011-04-28 | 2012-11-29 | Sumitomo Chemical Co Ltd | Optical sheet |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005005062A (en) * | 2003-06-10 | 2005-01-06 | Yuka Denshi Co Ltd | Surface light source device and display device using the same |
| JP2012128178A (en) * | 2010-12-15 | 2012-07-05 | Dainippon Printing Co Ltd | Optical sheet, surface light source device and liquid crystal display device |
-
2012
- 2012-12-05 JP JP2012266481A patent/JP2014112487A/en active Pending
-
2013
- 2013-06-04 KR KR1020157017742A patent/KR20150091398A/en not_active Application Discontinuation
- 2013-06-04 CN CN201380062839.1A patent/CN104903641A/en active Pending
- 2013-06-04 WO PCT/JP2013/065498 patent/WO2014087688A1/en active Application Filing
- 2013-06-19 TW TW102121812A patent/TW201423178A/en unknown
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004288570A (en) * | 2003-03-25 | 2004-10-14 | Toshiba Corp | Backlight and liquid crystal display device using the same |
| CN1853068A (en) * | 2003-09-19 | 2006-10-25 | 索尼株式会社 | Backlight device and liquid crystal display |
| US20090086506A1 (en) * | 2007-09-28 | 2009-04-02 | Fujifilm Corporation | Light guide plate, light guide plate unit, and planar lighting device |
| CN101793381A (en) * | 2009-01-30 | 2010-08-04 | 惠和株式会社 | Light guide sheet and backlight unit using the same |
| CN101994995A (en) * | 2009-08-21 | 2011-03-30 | 喜星电子株式会社 | Light guide board and side lighting backlight source device using the same |
| US20110242847A1 (en) * | 2010-04-06 | 2011-10-06 | Skc Haas Display Films Co., Ltd. | Laminated double-sided light guide plate |
| CN102385099A (en) * | 2010-08-31 | 2012-03-21 | Skc哈斯显示器薄膜有限公司 | Optical sheet having printed double-sided light guide plate |
| CN102681082A (en) * | 2011-03-18 | 2012-09-19 | 傑诚应用材料股份有限公司 | Method for roll-to-roll manufacturing light guide film and structure thereof |
| JP2012212612A (en) * | 2011-03-31 | 2012-11-01 | Nippon Zeon Co Ltd | Light guide member and backlight device |
| JP2012234692A (en) * | 2011-04-28 | 2012-11-29 | Sumitomo Chemical Co Ltd | Optical sheet |
| KR101102131B1 (en) * | 2011-07-12 | 2012-01-02 | 레이젠 주식회사 | Device for extrusion molding |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353441A (en) * | 2015-11-13 | 2016-02-24 | 重庆鑫翎创福光电科技股份有限公司 | Light guide plate made of PMMA material and provided with light output surface with large round dot structures |
| CN105353442A (en) * | 2015-11-13 | 2016-02-24 | 重庆鑫翎创福光电科技股份有限公司 | Light guide plate of PS material and with projection structures |
| CN105353440A (en) * | 2015-11-13 | 2016-02-24 | 重庆鑫翎创福光电科技股份有限公司 | Light guide plate made of MS material and provided with light output surface with large round dot structures |
| CN107703672A (en) * | 2017-11-21 | 2018-02-16 | 武汉华星光电技术有限公司 | Array base palte and preparation method thereof, flexible display panels, flexible display |
| CN109080100A (en) * | 2018-08-07 | 2018-12-25 | 浙江建设职业技术学院 | A kind of Intelligent platform rear-projection film processing unit (plant) and method |
| CN109080100B (en) * | 2018-08-07 | 2021-12-03 | 浙江建设职业技术学院 | Intelligent platform rear-projection film processing device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20150091398A (en) | 2015-08-10 |
| WO2014087688A1 (en) | 2014-06-12 |
| TW201423178A (en) | 2014-06-16 |
| JP2014112487A (en) | 2014-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104903641A (en) | Light guide plate, planar light source apparatus, transmissive image display apparatus, and light guide plate manufacturing method | |
| US8899815B2 (en) | Uniform reflective light-guide apparatus with micro-structure, and backlight module and LCD device having the same | |
| US8264622B2 (en) | Light guides | |
| US20090040428A1 (en) | Lightguide plate, planar light unit and display apparatus | |
| JP2008139819A (en) | Liquid crystal display, surface light source device, prism sheet, and method of manufacturing them | |
| TWI374315B (en) | ||
| US11016240B2 (en) | Light guide film and backlight unit | |
| KR101268961B1 (en) | Fabricating method of light guiding plate and backlight unit with the same | |
| KR101660088B1 (en) | Optical films laminate and lighting device comprising the same | |
| KR20090024129A (en) | Diffuser films and methods for making and using the same | |
| KR20110064854A (en) | Optical plate assembly and method thereof | |
| JP2014044912A (en) | Method for manufacturing resin sheet | |
| KR20160047440A (en) | Light guide plate including optical sheet and backlight unit containing the same | |
| TWI518385B (en) | Light guide plate and backlight unit assembly | |
| KR101147108B1 (en) | Light Guide Plate having Serration Film, and Backlight Unit Using the Same | |
| JP2009103892A (en) | Light diffusing body | |
| KR101778961B1 (en) | Light Guide Plate and Backlight Unit Assembly Comprising the Same | |
| US20060077555A1 (en) | Diffuse optical films | |
| CN102401930B (en) | Optical sheet, planar light source device and transmission image display device | |
| KR101661774B1 (en) | Light Guide Plate and Backlight Unit Assembly Comprising the Same | |
| KR101574133B1 (en) | Optical sheet, backlight unit including the same, and preparing method of the backligh unit | |
| TW200408836A (en) | Light guide plate and lightsource system with it | |
| CN112005146B (en) | Light guide plate, surface light source device, display device, and method for manufacturing light guide plate | |
| KR20110083006A (en) | Method of manufacturing composite sheet and optical plate assembly using the same | |
| JP2008242002A (en) | Diffusion plate with prism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150909 |
|
| WD01 | Invention patent application deemed withdrawn after publication |