CN106716012A - Production method for light guide plate - Google Patents
Production method for light guide plate Download PDFInfo
- Publication number
- CN106716012A CN106716012A CN201580010308.7A CN201580010308A CN106716012A CN 106716012 A CN106716012 A CN 106716012A CN 201580010308 A CN201580010308 A CN 201580010308A CN 106716012 A CN106716012 A CN 106716012A
- Authority
- CN
- China
- Prior art keywords
- roller
- makrolon
- sheet
- light guide
- guide plate
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 52
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 126
- 239000004417 polycarbonate Substances 0.000 claims abstract description 32
- 239000004425 Makrolon Substances 0.000 claims description 112
- 238000000034 method Methods 0.000 claims description 45
- 150000002148 esters Chemical class 0.000 claims description 14
- 238000001125 extrusion Methods 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000003825 pressing Methods 0.000 abstract 1
- 239000011347 resin Substances 0.000 description 30
- 229920005989 resin Polymers 0.000 description 30
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 7
- 239000004925 Acrylic resin Substances 0.000 description 6
- 229920000178 Acrylic resin Polymers 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000004381 surface treatment Methods 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical class OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- 238000005227 gel permeation chromatography Methods 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 229920001225 polyester resin Polymers 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000007261 regionalization Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Landscapes
- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The objective of the invention is to produce a light guide plate on which shapes such as dot patterns can be accurately applied, and, despite being thin, has high strength, is readily handled, and can be put into practical use. The production method for a polycarbonate light guide plate comprises steps of: rotating a first roll and a second roll while sandwiching a sheet-form polycarbonate between a flexible support and the second roll so as to apply pressure while co-transporting the flexible support, thereby pressing the sheet-form polycarbonate against the second roll; and causing the sheet-form polycarbonate pressed against the second roll and supported on the surface of the second roll by the flexible support to be transported in the rotation direction of the second roll, and separating the sheet-form polycarbonate from the flexible support, at a position where the rotation angle of the second roll is 45 to 150 degrees, as referenced from the position where the surfaces of the first roll and the second roll are closest to one another.
Description
Technical field
The present invention relates to a kind of manufacture method of light guide plate, the light guide plate is in such as smart mobile phone, portable phone, movement
Terminal, portable data assistance (PDA), plate PC (PC), notebook type PC, vehicle-mounted instrument face plate, PC use aobvious
Show the backlight and such as smart mobile phone, portable phone, mobile terminal, portable information of the liquid crystal display panel of device etc.
Used in the lighting device inside such as the backlight of keyboard of terminal (PDA), plate PC (PC), notebook type PC etc..
Background technology
Make the light entered from side diffusion and be used as the backlight of liquid crystal display panel etc. from the light guide plate of surface emergent light
Source.Because light guide plate makes the surface outgoing from the incident light internally propagated in its side from light guide plate, therefore in most cases
Generally the shapes such as dot pattern are formed on the surface of light guide plate.
For the lighting device for having used light guide plate, it is desirable to lighter, thinner, more cheap.Therefore, for light guide plate,
Asking makes thickness thinner, and requires more accurately to form the shapes such as dot pattern (improving shape imparting property), and requires to improve this
The productivity ratio of the light guide plate of sample.In the past, light guide plate was manufactured by injection moulding and extrusion processing etc., had carried out various tasting
Examination.
Patent document 1 describes the light guide plate and its manufacture method for having convex portion on two sides.Patent document 1 describes one kind
Light guide plate, the light guide plate has the base portion of the sheet for possessing photopermeability, and shape is respectively formed with the surface and the back side of base portion
Into convex position, wherein the face of a side as convex position by with base portion identical material, poly- with ester ring type structure
The melting extrusion resin of polymer resin etc. is constituted, and the convex position that formed for being formed at the face of the opposing party is consolidated by acrylic acid series ultraviolet
The ionizing radiation curable resin of change type resin etc. is constituted (with reference to patent document 1 [claim 1], [0009], [0026]).Patent
The thickness that document 1 describes light guide plate can be set to less than 500 μm (with reference to patent document 1 [0036], [Fig. 5]).As so
Light guide plate manufacture method, patent document 1 described by tiretube process (ス リ ー Block method) the melting extrusion processing (ginseng that carries out
According to patent document 1 [0037]~[0038], [Fig. 7]~[Fig. 8]).
Patent document 2 describes optical sheet and its manufacture method with thin double-sided light guide plate.Patent document 2 is described
A kind of optical sheet, the optical sheet is the optical sheet with multiple light guide plates：It is resin extruded to the first backer roll and by first
One pattern forms the roll gap between roller, so as to form with the face for being formed without pattern and be formed the ground floor in figuratum face；
Ground floor is transported to the roll gap between the second pattern formation roller and the second backer roll；Formed in the second backer roll and the second pattern
The second layer is extruded into being formed without on the face of pattern to ground floor in roll gap between roller, pattern is formed with so as to be formed and had
Face the second layer, wherein, the ground floor and the second layer being integrally formed include multiple light guide plate patterns (with reference to [power of patent document 2
Profit requires 1]).The thickness that patent document 2 describes optical sheet is 0.05mm~about 2mm (with reference to [claim of patent document 2
4]).Patent document 2 describe such optical sheet manufactured by extruding casting method (with reference to patent document 2 [0034]~
[0039], [Fig. 8 A]).Used as the resin of melting, the example of patent document 2 goes out makrolon, PMMA and polyolefin polymer
(with reference to patent document 2 [0041]).
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2015-69849 publications
Patent document 2：Japanese Unexamined Patent Publication 2012-68633 publications
The content of the invention
Invent problem to be solved
Although patent document 1 and 2 describes the method that thinner light guide plate is manufactured by extrusion molding, for institute's shape
Into pattern shape accuracy pattern shape assign property (transferability) do not have any disclosure.
And then, although patent document 1 and 2 illustrates used resin, but when by thickness it is thinning be the poly- carbon of the application
During the thickness of this degree of acid esters light guide plate, for example, because acrylic resin is soft and easy breakage, therefore substantially can not be real
Border uses.When the light guide plate of thickness of thin is manufactured using acrylic resin, in order to actually used, consider from strength problem, it is necessary to
It is combined with other base materials.It is therefore, actual not disclose the manufacture method for having used specific resin in embodiment,
Therefore patent document 1 and 2 can not say the light guide plate disclosed using the material exemplified by them and the actually used thickness of thin of energy
Manufacture method invention.
If it is considered that the light guide plate of thickness of thin is actually used, then the intensity from light guide plate is higher and more easily handled
Viewpoint is set out, it is contemplated that is preferably used the resin with higher intensity and is manufactured, but not yet report have it is actually used this
The resin of sample and impart the shapes such as dot pattern, the light guide plate that shape imparting rate (transferring rate) is high manufacture method exactly.
Assign that property is insufficient, shape that can not be accurately and desired by being adequately formed on the surface of light guide plate feelings in shape
Under condition, the problem of the luminance shortage of light guide plate can be also produced.
And then additionally, in recent years, specific requirement is with the leaded light of thickness of thin that is more cheap and stably manufacturing less than 600 μm
Plate.As described above, when using acrylic resin etc., if thickness is thinning (if being more specifically changed into less than 600 μm),
Also can there is a problem of that intensity is not enough.
The means used to solve the problem
The present inventor etc. is repeated further investigation, is as a result found that the manufacture method of following makrolon light guide plates can be accurate
The shapes such as dot pattern really are assigned, can be more manufactured inexpensively that the intensity although thickness of thin is high, be easily processed, actually used can lead
Tabula rasa, so as to complete the present invention.The manufacture method includes：Use this specific thermoplastic of the makrolon with independence
Property resin, obtains the sheet makrolon of molten condition, wherein, sheet makrolon and this specific branch of pliability supporting mass
Hold body and be attached to surface together and form figuratum roller；Sheet makrolon to be supported on the state of pliability supporting mass,
Formed and walk and solidify on figuratum roller, afterwards, the sheet makrolon that have cured is separated with pliability supporting mass.
That is, the present invention provides a kind of manufacture method of makrolon light guide plate, and it includes：
Makrolon is heated and is melted, from die head extrusion, so as to obtain sheet makrolon；
Abreast the first roller of configuration supporting pliability supporting mass and surface have the second roller of preformed pattern,
Configuration pliability supporting mass is so that it passes through between the first roller and the second roller, and is wound in the circumference side of the second roller
To at least a portion,
First roller and the second roller are held between pliability supporting mass and the second roller according to by sheet makrolon, and one
While make pliability supporting mass be conveyed along with sheet makrolon, while the mode pressurizeed is rotated, so as to by sheet
Makrolon is attached to the second roller；
The sheet makrolon for being attached to the second roller (keeps pressure by the surface that pliability supporting mass is supported on the second roller
Power), and along the direction of rotation conveying of the second roller, sheet makrolon and pliability supporting mass are with the first roller and the surface of the second roller
The anglec of rotation on the basis of immediate position in the second roller is that 45~150 ° of position separates；And
The 3rd roller and second is rolled out row, and be configured at the opposition side of the first roller,
Sheet makrolon is set to pass through between the second roller and the 3rd roller, and at least one of circumferencial direction by the 3rd roller
Branch holds, the 3rd roller to pull sheet makrolon in the way of rotated.
A kind of mode of the invention is, there is provided a kind of manufacture method of light guide plate, wherein, the surface of the first roller has bullet
Property.
Another way of the invention is, there is provided a kind of manufacture method of light guide plate, wherein,
I () is minute surface (by mirror surface treatment) with the surface of the bendable sheets of sheet polycarbonate contacts, in the poly- carbon of sheet
The one side of acid esters forms pattern, or
(ii) pattern form is pre-formed on the surface with the bendable sheets of sheet polycarbonate contacts, in the poly- carbonic acid of sheet
The two sides of ester forms pattern.
Other purports of the invention are, there is provided it is a kind of it is being manufactured by above-mentioned manufacture method, be formed with one or both sides
The makrolon light guide plate of pattern.
Preferred purport of the invention is, there is provided a kind of with the makrolon light guide plate manufactured by above-mentioned manufacture method
Display device.
Further purport of the invention is, there is provided one kind is by MVR (Melt Volume Rates：300 DEG C, 1.2kg) for 10~
90th, weight average molecular weight (Mw) be 16000~27000 makrolon be made, the poly- carbonic acid with 100~600 μm of thickness
Ester light guide plate.
The purport of present invention further optimization is, there is provided a kind of display device with above-mentioned makrolon light guide plate.
Invention effect
Because manufacture method of the invention has above-mentioned feature, therefore shape formative can be manufactured it is improved (from shape
Be improved to the shape transfer of makrolon into the roller for having shape), form desired precision on the surface of light guide plate
Shape makrolon light guide plate.Thus, can more be manufactured inexpensively intensity it is higher, be easier treatment, the leaded light of more high brightness
Plate, and then the backlight of high brightness can be manufactured.Further, since the light guide plate that thickness is less than 600 μm can be manufactured, therefore can be more honest and cleaner
Thinner, more light weight the backlight of valency ground manufacture.
The surface of the first roller have elasticity in the case of, can manufacture shape formative (transferring rate) further improve, more
The transfer plate of high brightness.
In the case where the surface of bendable sheets is minute surface, can manufacture and form figuratum light guide plate in one side, flexible
In the case that the surface of property piece is formed with pattern, can manufacture and form figuratum light guide plate on two sides.
By MVR (Melt Volume Rates：300 DEG C, 1.2kg) it is that 10~90, weight average molecular weight (Mw) is 16000~27000
The makrolon light guide plate that is made of makrolon can be that intensity is high, be easier treatment, the light guide plate of more high brightness, and then,
Because thickness is 100~600 μm, therefore it can be the backlight of thinner more light weight.
Brief description of the drawings
Fig. 1 schematically shows the manufacture method of the makrolon light guide plate of form of the invention.
Fig. 2 schematically shows the dot pattern for being formed at light guide plate.
Fig. 3 schematically shows and is formed at the triangular prism of light guide plate and is matched somebody with somebody in the way of making the plane contact of side and light guide plate
Put the channel-shaped or linear pattern for obtaining.
Specific embodiment
Hereinafter, while with reference to appended by accompanying drawing, while being described in detail to embodiments of the present invention.But, have
When can save detailed description slightly above essential limit.For example, omit sometimes the detailed description of item to having been well known or
Repeat specification to substantially identical composition.This be in order to avoid it is following illustrate become unnecessary it is tediously long, make people in the art
Member is readily appreciated that.
It should be noted that due to it is following explanation be in order that those skilled in the art be completely understood by the present invention and provide
, therefore should not be construed as being intended to being illustrated by these limiting described theme in claims.
The invention of form of the invention provides a kind of manufacture method of makrolon light guide plate.
In this manual, so-called " light guide plate " is to instigate the light entered from side to expand to penetrate and from surface emergent light, logical
Understand the object for light guide plate.
Light guide plate is generally in such as smart mobile phone, portable phone, mobile terminal, portable data assistance (PDA), flat board
The backlight of the liquid crystal display panel of type PC (PC), notebook type PC, vehicle-mounted instrument face plate, PC displays etc.,
And for example smart mobile phone, portable phone, mobile terminal, portable data assistance (PDA), plate PC (PC),
Used inside the lighting devices such as the backlight of the keyboard of notebook type PC etc..
" the makrolon light guide plate " of form of the invention refers to the light guide plate manufactured using makrolon.
" the makrolon light guide plate " of form of the invention is to use transparent and with independence makrolon (carbonic ester
It is resin) manufactured as thermoplastic resin.For makrolon, as long as being typically used as makrolon, and the present invention can be obtained
Just it is not particularly limited as the makrolon light guide plate of purpose, can suitably contains additive etc..
MVR (the Melt Volume Rates of makrolon：300 DEG C, 1.2kg) it is preferably 10~90, more preferably 15~60.It is poly-
The MVR of carbonic ester is measured by JIS K7210.
The weight average molecular weight (Mw) of makrolon is preferably 16000~28000, more preferably 18000~25200.
The weight average molecular weight (Mw) of makrolon is to by gel permeation chromatography using single dispersing molecular weight polystyrene
(GPC) obtained from the value that device measure is obtained is converted.More specifically, Japanese Waters company systems Alliance is used
HPLC System determine chromatogram as GPC devices using UV detectors.Use Agilent Technologies company systems
5 μm of Mixed-C of PLgel as GPC posts.Sample is dissolved in tetrahydrofuran, and makes it with the flow velocity of 1ml/min 40
DEG C column temperature under flow.Measured value is converted using the standard curve obtained by single dispersing molecular weight polystyrene, is obtained
Mw。
For the manufacture method of the makrolon light guide plate of form of the invention,
First, makrolon is heated and is melted, from die head extrusion, so as to obtain the sheet makrolon of molten condition.
230~290 DEG C are preferably from the temperature of the makrolon of die head extrusion, it is more preferably 240~280 DEG C, especially excellent
Elect 250~270 DEG C as.In the case where the temperature of the makrolon extruded from die head is for 230~290 DEG C, because mobility is high
And transferring rate is further improved, therefore preferably.
As long as although die head can manufacture light guide plate of the present invention as purpose, being just not particularly limited, T can be gone out with example
Pattern head.
Then, the first roller and surface that prepare supporting pliability supporting mass have the second roller of preformed pattern, with
The mode that the central shaft of the first roller and the second roller is parallel to each other is configured.Configuration pliability supporting mass so that its from the first roller with
Pass through between second roller, and be wound at least a portion of the circumferencial direction of the second roller.
First roller and the second roller make the sheet makrolon of molten condition be held on pliability supporting mass and according to one side
Between two rollers, while make pliability supporting mass be rotated along with the mode that sheet makrolon is conveyed, so as to by molten
The sheet makrolon of state is attached to the second roller.
By being attached to the second roller, the shape for being formed at the surface of the second roller is transferred, so as in the piece of molten condition
The one side of shape makrolon forms pattern.
When using figuratum pliability supporting mass is formed in the face with sheet polycarbonate contacts, and then, it is formed at
The shape on the surface of pliability supporting mass is transferred, so as to form pattern on the two sides of the sheet makrolon of molten condition.Just
For the shape of pattern, two sides can be with identical, it is also possible to different.
Therefore, a kind of manufacture method of light guide plate can be also provided, wherein, the pliability of (i) and sheet polycarbonate contacts
The surface of piece is minute surface (or by mirror surface treatment), and pattern is formed in the one side of sheet makrolon, or
(ii) pattern form is pre-formed on the surface with the bendable sheets of sheet polycarbonate contacts, in the poly- carbonic acid of sheet
The two sides of ester forms pattern.
And then, the sheet makrolon for being attached to the second roller is supported on the surface of the second roller by pliability supporting mass, and
Pressure (or keeping pressure so that pressure does not decline) is kept, is conveyed along the direction of rotation of the second roller, the poly- carbon of sheet of molten condition
Acid esters is cooled, and is preferably solidified, and sheet makrolon and pliability supporting mass are most connect with the first roller with the surface of the second roller
On the basis of near position, separated in the position of 45~150 ° of the anglec of rotation along the direction of rotation of the second roller.With the first roller with
When on the basis of the immediate position in surface of the second roller, the position that the sheet makrolon and pliability supporting mass that have cured are separate
, the anglec of rotation of the second roller be preferably 45~150 °, particularly preferably more preferably 50~135 °, 60~120 °.
From bringing shape more accurately to transfer, transferability is further improved, be easier to make for bendable sheets and sheet is poly-
From the point of view of the stripping of carbonic ester, when on the basis of the immediate position in the surface of the first roller and the second roller, the piece that have cured
Position, the second roller the anglec of rotation that shape makrolon and pliability supporting mass are separate is preferably 45~150 °.
The temperature of the first roller is preferably 5~40 DEG C, particularly preferably more preferably 5~35 DEG C, 10~30 DEG C.
The temperature of the second roller is preferably 110~180 DEG C, particularly preferably more preferably 120~170 DEG C, 130~160 DEG C.
The first roller temperature be 5~40 DEG C, the temperature of the second roller for 110~180 DEG C in the case of, due to bringing shape
More accurately transfer, transferability is further improved, being easier to make for bendable sheets and the stripping of sheet makrolon, thus it is excellent
Choosing.
Temperature around first roller and the second roller is preferably so-called room temperature (5~35 DEG C).
As long as the pliability supporting mass for from sheet makrolon separate can carry out appropriate treatment, just do not have for its treatment
It is particularly limited to.For example, there is following manner：The mode batched with coiling machine；To again return to the first roller and to imported into
Mode that mode between one roller and the second roller is returned etc..In the case where resin film is used as pliability supporting mass, preferably
Use the mode for batching with coiling machine pliability supporting mass.
And then, preferably the 3rd roller is configured at rolling out row (central shaft of the 3rd roller and the second roller is parallel to each other) with second
The opposition side of the first roller.
Then, the sheet makrolon for being formed with shape passes through between the second roller and the 3rd roller, by the circumference of the 3rd roller
Direction at least a portion supporting, the 3rd roller to pull sheet makrolon in the way of rotated.
Without being pressurizeed (clamp) to sheet makrolon between the 3rd roller and the second roller, preferably reserve the 3rd roller with
The interval of the second roller.For should being spaced, as long as the 3rd roller can at least partially be supported by it, pull sheet makrolon,
Just it is not particularly limited.
As long as having pliability, the form with sheet can gather sheet " the pliability supporting mass " of form of the invention
Carbonic ester is supported on the second roller, can manufacture makrolon light guide plate of the present invention as purpose, is just not particularly limited.
As pliability supporting mass, for example, can use polyester based resin film, acrylic resin film, polycarbonate-based tree
The resin films such as adipose membrane, stainless steel system sheet metal, nickel system sheet metal, surface nickel system plating process copper system sheet metal, surface
The sheet metals such as chromium system plating treatment copper system sheet metal.
Pliability supporting mass preferably uses resin film, more preferably uses polyester based resin film.
For pliability supporting physical efficiency shape is simultaneously pre-formed at it.When using such pliability supporting mass, energy
Manufacture is formed with the light guide plate of shape on two sides.As long as can manufacture form of the invention is formed with the leaded light of shape on two sides
Plate, the pliability supporting mass for being pre-formed with shape in one side is just not particularly limited.
As the pliability supporting mass of shape is simultaneously being pre-formed, for example, can be gone out with example and be supported in above-mentioned pliability
The one side of body forms the supporting mass of shape.As such pliability supporting mass for being formed with shape, for example, can be gone out with example
It is solid using acrylic acid series light on the surface of the resin films such as polyester based resin film, acrylic resin film, polycarbonate-based resin film
Change the light-cured resin such as resin and form the resin film of shape；In stainless steel system sheet metal, nickel system sheet metal, copper system
The surface of the sheet metals such as sheet metal forms shape using methods such as laser processing method, plating, machining method, etching methods
The sheet metal of shape.
As the pliability supporting mass of shape is simultaneously being pre-formed, preferably uses light-cured resin and form shape
Resin film, the resin film of shape is more preferably formd using acrylic photo-curing resin on the surface of polyester based resin film.
First roller of form of the invention, the second roller and the 3rd roller are that typically in the extrusion molding of resin what is used
Roller, as long as light guide plate of the invention can be manufactured, is just not particularly limited.
And then, the first roller~the 3rd roller is each made of a metal, and surface both can be metal, or other materials
Material.The surface of the first roller is preferably generally minute surface (or by mirror surface treatment).The surface of the second roller is formed with shape.3rd roller
Surface is preferably generally minute surface.
Although the configuration of the first roller~the 3rd roller is not particularly limited, there are horizontal arrangement, arranged perpendicular etc., preferred levels
Configuration.
First roller of form of the invention preferably its surface has elasticity.
For the elasticity of the first roller, measured value of the durometer hardness specified by JIS K6253 in terms of A type hardness testers is counted,
Preferably 40~85, more preferably 50~85, particularly preferably 60~80.
In the case where the surface of the first roller has elasticity, due to bringing shape more accurately to transfer, transferability is set to enter one
Step is improved, and then, it becomes difficult to being changed by manufacturing condition is influenceed, and can absorb the variation of manufacturing condition, is more stably carried out
Manufacture, therefore preferably.
In order to the surface to the first roller assigns elasticity, its surface can be covered with elastomer.Can be supported on the first roller
When the makrolon from the melting of T-shaped mould head extrusion is clamped between flexible strip and the second roller and being pressurizeed, as long as being capable of bullet
Property deformation elastomer be just not particularly limited.The surface of the first roller is preferably with from silicon systems elastic resin, nitrile rubber (ニ ト リ Le
Block チ Le go system) it is that at least one elastomer of the middle selection such as elastic resin is covered, more preferably with from silicon systems elastic resin
At least one of middle selection is covered.
As described above, the second roller of form of the invention is formed with the shape for being transferred to light guide plate on its surface.Although shape
As long as the pattern of light guide plate can be used in into the shape in the second roller, just it is not particularly limited, but it is for example preferred dot pattern, micro-
Lens pattern etc..
The thickness of the makrolon light guide plate of form of the invention is preferably 100~600 μm, more preferably 125~400 μ
M, particularly preferably 150~300 μm.
Makrolon light guide plate thickness in the case of 100~600 μm, can maintain it while thinner, more light weight
Intensity, can be actually used, therefore preferably.
It should be noted that the thickness of makrolon light guide plate refers to the part of the not thickness including pattern forming portion.
Although pattern can have 2 kinds of convex and concavity on the basis of being formed without the part of the light guide plate of pattern, preferably
Convex shape.
For example, schematically showing the dot pattern for being formed at light guide plate in fig. 2.
And then, triangular prism is schematically shown in figure 3 to be configured in the way of making the plane contact of its side and light guide plate
The pattern of wire obtaining, being formed at light guide plate or channel-shaped.
For the face with the pattern of the part contact of the light guide plate for being formed without pattern, by the chi of the part most wide in this face
Very little " width (w) " for being referred to as this pattern.
For the face with the pattern of the part contact of the light guide plate for being formed without pattern, by apart from this face vertical direction most
The size of part high is referred to as " height (h) " of this pattern.
The shape of pattern typically has a maximum dimension of less than 100 μm, preferably less than 50 μm, other sizes for its 10% with
On.
Wherein, have compared with the part in other directions in the part that pattern is such a direction such as channel-shaped or wire
It is (described later to be configured in the way of making the plane contact of its side and light guide plate in triangular prism in the case of the shape of size extremely long
In the case of the pattern for obtaining), the size of the part in this groove direction or line direction is not considered.Hung down with this groove direction or line direction
Straight direction, the size of the part in the direction parallel with the plane of sheet makrolon is referred to as " width (w) ".With this groove side
To or the vertical direction in line direction, the size of the part in the direction vertical with the plane of sheet makrolon is referred to as " height
(h)”.In " width " and " height ", maximum size is usually less than 100 μm, preferably less than 50 μm.
For the manufacture method of form of the invention, the transferring rate of the pattern for being formed is to consider formed pattern
The both sides of the transferring rate of the width of bottom surface and the transferring rate of height are studied.Herein, the width of the pattern for being formed and
Height is as described above.
For example, if point shape, then due to that substantially can be hemispherical, therefore the width of bottom surface refers at the bottom of toroidal
Maximum diameter, highly refers to the height of substantial highest part in face.
For example, if in triangular prism on the direction parallel with the surface of roller to make its contacts side surfaces in the way of configure and obtain
Wire or channel-shaped pattern, then because the side of triangular prism is extremely elongated rectangle, therefore its width refers to triangular prism
Side short side length, highly refer to the height from one side of the triangle of the bottom surface of triangular prism to opposed summit.
If dot pattern, then the transferring rate for putting the diameter of the circular bottom surface of shape is preferably 90~100%, more preferably
It is 92~100%, particularly preferably 95~100%.The transferring rate of the height of point shape is preferably 80~100%, more preferably
85~100%, particularly preferably 90~100%.Hereinafter, it is also referred to as transferring rate 1.
It is 90~100% in the transferring rate of the diameter of the circular bottom surface of a shape, the transferring rate for putting the height of shape is
In the case of 80~100%, the light guide plate of more high brightness can be manufactured, therefore preferably.
If in triangular prism on the direction parallel with the surface of roller to make its contacts side surfaces in the way of configure the line for obtaining
The pattern of shape or channel-shaped, then the transferring rate of the length of the short side of the side of triangular prism be preferably 90~100%, more preferably 92~
100%, particularly preferably 95~100%.From one side turning to the height on opposed summit of the triangle of the bottom surface of triangular prism
Print rate is preferably 70~100%, more preferably 80~100%, particularly preferably 90~100%.Hereinafter, it is also referred to as transfer
Rate 2.
It is 90~100% in the transferring rate of the length of the short side of the side of triangular prism, from the triangle of the bottom surface of triangular prism
One side to the height on opposed summit transferring rate in the case of 70~100%, the light guide plate of more high brightness can be manufactured, because
This is preferred.
Fig. 1 with reference to appended by, the more specifically manufacture method to form of the invention is described in detail.
Fig. 1 schematically shows the manufacture method of the light guide plate of form of the invention.
First roller 10, the second roller 20 and the 3rd roller 30 this 3 rollers are in their order with respect to their central shaft abreast
To configure.
Pliability supporting mass 40 is unreeled from let off roll 50, is supported on the first roller 10, between the first roller 10 and the second roller 20
Pass through, after being supported on the second roller, separated from the second roller, and be directed to roller 52 and roller 54, rolled by wind-up roll 56.First roller 10
Surface be minute surface (or by mirror surface treatment).The surface of the first roller can also have elasticity.
Second roller 20 is formed with shape on its surface.
The surface of the 3rd roller 30 is minute surface (or by mirror surface treatment).
The makrolon of melting is extruded from T-shaped mould first 60 as the sheet makrolon 70 of melting.First roller 10 and second
Roller 20 is rotated, and between the roller 20 of pliability supporting mass 40 and second, sheet makrolon 70 is pressed from both sides together with pliability supporting mass
It is pressurized while holding.Sheet makrolon 70 is attached to the second roller, so as to the shape of the second roller 20 is transferred to sheet gather
On carbonic ester 70.
The sheet makrolon 70 for being attached to the second roller 20 is supported on the surface of the second roller 20 by pliability supporting mass 40
While, conveyed on the direction of rotation of the second roller 20.It is preferred that now sheet makrolon 70 is solidified.Sheet makrolon
72 and pliability supporting mass 40 on the basis of the immediate position in surface of the first roller 10 and the second roller 20, along the second roller 20
Direction of rotation separates in the position of 45~150 ° of the anglec of rotation (θ).
Pliability supporting mass 40 passes through from roller 52 and 54, is rolled by wind-up roll 56.Pliability supporting mass 40 for example can also
Let off roll 50 is back to, without being rolled by wind-up roll 56.
The sheet makrolon 72 for pliability supporting mass 40 separate is further conveyed on the surface of the second roller 20, from
Pass through between second roller 20 and the 3rd roller 30, supported by least a portion of the circumferencial direction of the 3rd roller 30.3rd roller 30 is with drawing
The mode for taking sheet makrolon 72 is rotated.Sheet makrolon 72 can be rolled up by other rollers (not shown)
Take.
The present invention provide it is a kind of it is being manufactured by above-mentioned manufacture method, form figuratum makrolon in one or both sides
Light guide plate.
And then, the present invention provides a kind of display dress with the makrolon light guide plate manufactured by above-mentioned manufacture method
Put.
The present invention provides one kind by MVR (Melt Volume Rates：300 DEG C, 1.2kg) it is 10~90, weight average molecular weight (Mw)
For 16000~28000 makrolon be made, the makrolon light guide plate with 100~600 μm of thickness.
The present invention provides a kind of display device with above-mentioned makrolon light guide plate.
The makrolon light guide plate of form of the invention is in the backlight of such as liquid crystal display panel and the backlight of keyboard
Used inside the lighting device in source etc., the present invention provides such lighting device.
And then, such lighting device is used as such as smart mobile phone, portable phone, mobile terminal, portable information terminal
The display device of end (PDA), plate PC (PC), notebook type PC, vehicle-mounted instrument face plate, PC displays etc. makes
With the present invention provides such display device.
Embodiment
Below, although by embodiment and comparative example to of the invention specific and be described in detail, but these embodiments
Only a form of the invention, of the invention by any restriction of these examples.
It should be noted that in the record of embodiment, as long as no especially record, just being made with not considering the part of solvent
It is weight portion and the benchmark of weight %.
Embodiment 1
The use of the external diameter of screw rod is the non-vented single -screw extruder of 40mm φ.Effective width using die lip is
The T-shaped mould head of 450mm is used as die head.Following 3 rollers are flatly configured as cold in the parallel mode in the direction of each central shaft
But roller unit is used, i.e.,：The resilient roller (first that width is 500mm, external diameter is covered for 300mm φ and surface by silicon rubber
Roller)；Configured in the way of the surface in roller is randomly formed the point shape that external diameter is 50 μm, depth is 5 μm, width is
500mm, external diameter are the metallic roll (the second roller) of 300mm φ；Surface is that minute surface and width are that 500mm, external diameter are 300mm φ's
Metallic roll (the 3rd roller).
(firmly change Si Tailong makrolon company system, weight average molecular weight (Mw) using polycarbonate resin：21400、MVR：
29) as thermoplastic transparent resin.
Using following sheet material as pliability supporting mass, i.e. use acrylic acid series on the polyester film that thickness is 0.125mm
Light-cured resin on surface so that be formed parallel to the sheet material of 25 μm of spacing, the triangular prism shape of 7 μm of depth.
The makrolon melted at 250~270 DEG C is squeezed from T-shaped mould head as the sheet makrolon for having melted
Go out.First roller and the second roller rotate, between pliability supporting mass and the second roller, sheet makrolon and pliability supporting mass one
Rise, pressurized while being clamped, the shape of the second roller is transferred to sheet makrolon.
While sheet makrolon is supported on the surface of the second roller by pliability supporting mass, in the direction of rotation of the second roller
Upper conveying, sheet makrolon is solidified, on the basis of the immediate position in the surface of the first roller and the second roller, in the second roller
The anglec of rotation be 90 ° of position, the sheet makrolon that have cured is separated with pliability supporting mass.Pliability supporting mass passes through
Roller, is batched by wind-up roll.
The temperature of the first roller is 10~30 DEG C, and the temperature of the second roller is 140~160 DEG C.Around first roller and the second roller
Temperature be room temperature.
The thickness of manufactured makrolon light guide plate is 0.250mm.By Keyence company system digit microscopes VHX-
2000 types (trade name) observe the surface of light guide plate, determine transferring rate (transferring rate 1), as a result, the bottom surface of point shape is straight
The transferring rate in footpath is 97%~100%, and the transferring rate for putting the height of shape is 92%~98%.
To the triangular prism on the direction parallel with surface to make its contacts side surfaces in the way of configure the channel-shaped or wire that obtain
Pattern determines transferring rate (transferring rate 2), as a result, the transferring rate of the length of the short side of the side of triangular prism be 98~
100%, the transferring rate from one side of the triangle of the bottom surface of triangular prism to the height on opposed summit is 95~97%.
Comparative example 1
Makrolon light guide plate is manufactured using method same as Example 1.
But, the sheet makrolon of molten condition is not supported on the surface of the second roller, pliability by pliability supporting mass
Supporting mass is separated from sheet makrolon.That is, sheet makrolon is supported on pliability supporting mass and the anglec of rotation θ realities for conveying
It is 0 ° in matter.
Along surface for the resilient roller of silicon rubber is returned and is batched by coiling machine, the poly- of thickness 0.250mm has been manufactured
Carbonic ester light guide plate.
The surface of light guide plate is observed same as Example 1ly, transferring rate is determined, as a result, the bottom surface of point shape is straight
The transferring rate in footpath is 94%~97%, and the transferring rate for putting the height of shape is 57%~69%.
For the triangular prism on the direction parallel with surface to make its contacts side surfaces in the way of configure the wire or groove that obtain
The pattern of shape, the transferring rate of the length of the short side of the side of triangular prism is 98~100%, from the triangle of the bottom surface of triangular prism
While the transferring rate to the height on opposed summit is 63~68%.
Using method same as Example 1, the light guide plate of manufacture embodiment 2~6 and comparative example 2~3.
Wherein, respectively with the part different from embodiment 1, conclude its details and result is shown in table 1~2.
It should be noted that in comparative example 3, using acrylic resin (Mitsubishi Rayon Co. Ltd. systems, VH6 (commodity
Name), MFR=1.7 (JISK7210)) replace makrolon.
[table 1]
[table 2]
When studying embodiment and comparative example, it is possible to understand that when the anglec of rotation is between 45~150 °, even if
It is thinness as 0.250mm, for the short transverse of pattern, can be also led with more than 80% transferring rate high manufacture makrolon
Tabula rasa.It is because the manufacture method of form of the invention uses extrusion method therefore easy to manufacture.And then, due to can be once
Property ground form shape on two sides, therefore can more easily manufacture the makrolon light guide plate that there is shape on two sides.
As described above, as the example of technology of the invention, being illustrated to implementation method.Therefore, describe in detail
Explanation.
Therefore, in the inscape described in detailed description, will not only for being constituted necessary to solve problem
Element, for the above-mentioned technology of example, can also include for the nonessential inscape of solve problem.Therefore should not be non-because of these
Required inscape is recorded in detailed description, and it is required that these nonessential inscapes are just regarded as immediately.
Further, since above-mentioned implementation method is used for example technology of the invention, therefore can be in claims or its is equal
Various changes, replacement, additional, omission etc. are carried out Deng in the range of.
Industrial applicability
Manufacture method on light guide plate of the invention, can be significantly increased using by conventional injection molding, extrusion
The autofrettage of light guide plate that processing is carried out and by not sufficient enough transferring rate in the method for shape transfer to resin surface, Jin Erneng
Stably manufacture and form the light guide plate of 100~600 μm of the thickness of the shape of precision on the surface of light guide plate.Therefore, because can carry
Light guide plate for being deliberately formed shape in light guide plate surface, can realize the high brightness of backlight, therefore industrial utility value
It is high.
Description of reference numerals
10：First roller
20：Second roller
30：3rd roller
40：Pliability supporting mass
50：Pliability supporting mass let off roll
52 and 54：Roller
56：Pliability supporting mass wind-up roll
60：T-shaped mould head
70：The sheet makrolon of molten condition
72：The sheet makrolon of solid state
w：Width
h：Highly
Claims (5)
1. a kind of manufacture method of makrolon light guide plate, it includes：
Makrolon is heated and is melted, from die head extrusion, so as to obtain sheet makrolon；
Abreast the first roller of configuration supporting pliability supporting mass and surface have the second roller of preformed pattern,
Configuration pliability supporting mass is wound in the circumferencial direction of the second roller so that it passes through between the first roller and the second roller
At least partially,
First roller and the second roller are held between pliability supporting mass and the second roller according to by sheet makrolon, and while are made
Pliability supporting mass is conveyed along with sheet makrolon, while the mode pressurizeed is rotated, so as to by the poly- carbon of sheet
Acid esters is attached to the second roller；
The sheet makrolon for being attached to the second roller is supported on the surface of the second roller by pliability supporting mass, and along the second roller
Direction of rotation conveys, sheet makrolon and pliability supporting mass with the immediate position in the surface of the first roller and the second roller be base
The accurate anglec of rotation in the second roller is that 45~150 ° of position separates；And
The 3rd roller and second is rolled out row, and be configured at the opposition side of the first roller,
Sheet makrolon is passed through between the second roller and the 3rd roller, and the circumferencial direction by the 3rd roller at least a portion branch
Hold, the 3rd roller to pull sheet makrolon in the way of rotated.
2. the manufacture method of light guide plate according to claim 1, wherein,
The surface of the first roller has elasticity.
3. the manufacture method of light guide plate according to claim 1 and 2, wherein,
I () is minute surface with the surface of the bendable sheets of sheet polycarbonate contacts, pattern is formed in the one side of sheet makrolon,
Or
(ii) pattern form is pre-formed on the surface with the bendable sheets of sheet polycarbonate contacts, in sheet makrolon
Two sides forms pattern.
4. a kind of makrolon light guide plate, it passes through manufacture method manufacture any one of claims 1 to 3, and one
Face or two sides are formed with pattern.
5. a kind of display device, it has the makrolon manufactured by the manufacture method any one of claims 1 to 3
Light guide plate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2015/073896 WO2017033290A1 (en) | 2015-08-25 | 2015-08-25 | Production method for light guide plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106716012A true CN106716012A (en) | 2017-05-24 |
| CN106716012B CN106716012B (en) | 2020-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580010308.7A Active CN106716012B (en) | 2015-08-25 | 2015-08-25 | Method for manufacturing light guide plate |
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| Country | Link |
|---|---|
| JP (1) | JP5973110B1 (en) |
| CN (1) | CN106716012B (en) |
| TW (1) | TWI707770B (en) |
| WO (1) | WO2017033290A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111674055A (en) * | 2019-03-11 | 2020-09-18 | 松下知识产权经营株式会社 | Manufacturing method and manufacturing apparatus of thin film structure |
| TWI777012B (en) * | 2017-12-28 | 2022-09-11 | 日商日東樹脂工業股份有限公司 | Manufacturing method and manufacturing device of light guide plate |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109228236A (en) * | 2018-09-30 | 2019-01-18 | 深圳市普耐科技有限公司 | A kind of shaped form extrusion molding mould |
| CN109228235A (en) * | 2018-09-30 | 2019-01-18 | 深圳市普耐科技有限公司 | A kind of linear type extrusion molding mould |
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| CN111674055A (en) * | 2019-03-11 | 2020-09-18 | 松下知识产权经营株式会社 | Manufacturing method and manufacturing apparatus of thin film structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106716012B (en) | 2020-03-27 |
| JP5973110B1 (en) | 2016-08-23 |
| WO2017033290A1 (en) | 2017-03-02 |
| JPWO2017033290A1 (en) | 2017-08-24 |
| TWI707770B (en) | 2020-10-21 |
| TW201710059A (en) | 2017-03-16 |
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