CN101639201A - Optical sheet and preparation method thereof - Google Patents

Optical sheet and preparation method thereof Download PDF

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Publication number
CN101639201A
CN101639201A CN200910160851A CN200910160851A CN101639201A CN 101639201 A CN101639201 A CN 101639201A CN 200910160851 A CN200910160851 A CN 200910160851A CN 200910160851 A CN200910160851 A CN 200910160851A CN 101639201 A CN101639201 A CN 101639201A
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CN
China
Prior art keywords
optical sheet
basement membrane
prism pattern
diffusion
light
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
Application number
CN200910160851A
Other languages
Chinese (zh)
Other versions
CN101639201B (en
Inventor
李大焕
金雨泰
李敬秀
金锡�
黄材善
安光俊
郑镇溶
卞达锡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Li Dahuan
Xiubo Ruiyin Optoelectronics Co.,Ltd.
Original Assignee
Nano Vision Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020080074235A external-priority patent/KR100898102B1/en
Priority claimed from KR1020080101952A external-priority patent/KR100898047B1/en
Application filed by Nano Vision Co Ltd filed Critical Nano Vision Co Ltd
Publication of CN101639201A publication Critical patent/CN101639201A/en
Application granted granted Critical
Publication of CN101639201B publication Critical patent/CN101639201B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G02B5/045—Prism arrays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/30—Fillers, e.g. particles, powders, beads, flakes, spheres, chips

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

An optical sheet includes a base film in which light is incident from a lower side, a plurality of prism patterns and a diffusion member. The prism patterns are protruded to be spaced apart from eachother on the base film to enhance the front luminance of light incident from the lower side of the base film. The diffusion member is disposed between prism patterns to have a diffusion surface in parallel with the base film. The diffusion member includes a plurality of diffusion dots capable of enhancing the luminance uniformity of light incident from the lower side of the base film. Thus, frontluminance and luminance uniformity may be enhanced due to a juxtaposition of the prism patterns and the diffusion portion, and the viewing angle of the LCD device may be enhanced.

Description

Optical sheet and manufacture method thereof
Prioity claim
According to 35 USC § 119,2008-74226 number of requiring to submit to Korea S Department of Intellectual Property (KIPO) on July 29th, 2008 of the application and 2008-74235 korean patent application and on October 17th, 2008 priority to the 2008-101952 korean patent application of Korea S Department of Intellectual Property submission, its content is incorporated this paper by reference and all into.
Background technology
1. FIELD OF THE INVENTION
Illustrative embodiments of the present invention relates to a kind of optical sheet and manufacture method thereof.More specifically, illustrative embodiments of the present invention relates to a kind of optical sheet and manufacture method thereof with enhanced optical characteristic.
2. description of related art
The LCD panel of liquid crystal display in general, (LCD) device comprises two substrates that face with each other and inserts two liquid crystal layers between the substrate.The light transmittance of LCD panel control liquid crystal layer is with display image.
The LCD device compare with other display unit for example have thin thickness, in light weight, driving voltage is low and characteristic such as low-power consumption, thereby the LCD device has been used for many industrial circles and has been widely used in portable computer, communicator and TV.Yet, since the LCD panel of LCD device be itself can not be luminous non-luminescent device, therefore in the LCD device, need to provide the backlight assembly of light for the LCD panel.
Backlight assembly comprises that light source and being used to strengthens the optical sheet of the optical characteristics of the light that light source produces.Optical sheet comprises prismatic lens, diffusion disk, LGP etc.
When optical sheet comprises various optical sheet, can strengthen the optical characteristics of backlight assembly.Yet when the quantity of optical sheet increased, the characteristic of assembly may descend and manufacturing cost may improve.
In addition, the defective that produces owing to cut may occur in the zone that optical sheet contacts with each other.
In addition, the visual angle of LCD device may be restricted because of the thickness of liquid crystal layer.
Summary of the invention
Exemplary of the present invention provides a kind of optical sheet with enhanced optical characteristic.
Exemplary of the present invention also provides a kind of method of making above-mentioned optical sheet.
According to an aspect of the present invention, optical sheet comprises basement membrane, a plurality of prism pattern and diffusing member, and in basement membrane, light is from downside incident.Prism pattern is outstanding with separated from one another on basement membrane, thereby enhancing is from the front face brightness of the light of the downside incident of basement membrane.Diffusing member is arranged between the prism pattern, to have the diffusing surface parallel with basement membrane.Diffusing member comprises a plurality of diffusion points, and the diffusion point can strengthen from the brightness uniformity of the light of the downside incident of basement membrane.
According to another aspect of the present invention, optical sheet comprises basement membrane, a plurality of prism pattern and diffusing member, and in basement membrane, light is from downside incident.Prism pattern is outstanding with separated from one another on basement membrane, thereby enhancing is from the front face brightness of the light of the downside incident of basement membrane.Diffusing member is arranged between the prism pattern, to have the diffusing surface parallel with basement membrane.Diffusing member comprises a plurality of diffusion grooves, and the diffusion groove strengthens from the brightness uniformity of the light of the downside incident of basement membrane.
According to a further aspect of the invention, optical sheet comprises basement membrane, a plurality of prism pattern, diffusing member and auxiliary diffusing member.Basement membrane comprises prism district, diffusive regions and the auxiliary diffusive regions between prism district and diffusive regions.Prism pattern comprises the right angled triangle that is formed by the inclined-plane that is separated from each other in the epilamellar prism district.Diffusing member is arranged in the epilamellar diffusive regions, and between the adjacent downside of adjacent prism pattern.Diffusing member comprises the diffusing surface parallel with basement membrane.Diffusing member comprises a plurality of diffusion points that are positioned on the diffusing surface.Auxiliary diffusing member is arranged in auxiliary diffusive regions to have and prism pattern and diffusing member identical materials.Auxiliary diffusing member and prism pattern and diffusing member are integrally formed.Auxiliary diffusing member is between the adjacent upside of prism pattern, the light that passes its incident is reflected or reflect.
According to a further aspect of the invention, optical sheet comprises first basement membrane and light control film.Light control film comprises a plurality of air ducts, a plurality of prism pattern and organic layer.Air duct is positioned on first basement membrane, thereby arranges on the direction parallel with first basement membrane.Prism pattern attaches on the upper surface of first basement membrane.Organic layer covers the top edge of prism pattern, to limit the upper surface of air duct.The lateral edge of each air duct is circular.
According to also aspect of the present invention, optical sheet comprises first basement membrane, temporary transient adhesion coating and second basement membrane.Temporary transient adhesion coating is positioned on first basement membrane, and temporary transient adhesion coating comprises formed thereon and is parallel to a plurality of grooves that first basement membrane arranges and is positioned at contact portion between adjacent groove.Second basement membrane is attached to contact portion to cover groove.
According to a further aspect of the invention, optical sheet comprises first basement membrane, the first temporary transient adhesion coating, second basement membrane, second temporary transient adhesion coating and the 3rd basement membrane.The first temporary transient adhesion coating is positioned on first basement membrane.The first temporary transient adhesion coating comprises formed thereon and is parallel to a plurality of first grooves that first basement membrane arranges and is positioned at first contact portion between the first adjacent groove.Second basement membrane is attached on first contact portion, to cover first groove.The second temporary transient adhesion coating is positioned on second basement membrane.The second temporary transient adhesion coating comprises formed thereon and a plurality of second grooves of being arranged in parallel with each other and is positioned at second contact portion between the second adjacent groove.The 3rd basement membrane is attached on second contact portion, to cover second groove.
According to a further aspect of the invention, provide a kind of method of making optical sheet.In the method, form a plurality of prism pattern, a plurality of prism pattern extend parallel to each other on first basement membrane.Then, coating is coated on second basement membrane.Then, in substrate, arrange second basement membrane, so that coat side is to prism pattern.Then, by pushing second basement membrane top of prism pattern is inserted in the coating towards first basement membrane.Then, coating is solidified to form organic layer.
According to also aspect of the present invention, provide a kind of method of making optical sheet.In the method, by on first basement membrane, depositing temporary adhesion solution to form temporary transient adhesion coating.Then, by being carried out composition, the adhesion coating forms a plurality of grooves parallel and the contact portion between adjacent groove with first basement membrane.Then, second basement membrane is adhered to the contact portion of adhesion coating, to cover groove.
According to a further aspect of the invention, provide a kind of method of making optical sheet.In the method, on first basement membrane, deposit photocurable resin to form photo-induced curing coating.Then, photo-induced curing coating is carried out composition, to form and a plurality of grooves that first basement membrane is arranged in parallel and the contact portion between adjacent grooves.Then, second basement membrane temporarily is adhered to the contact portion of photo-induced curing coating, to cover groove.Afterwards, photo-induced curing coating is solidified.
According to the present invention, front face brightness and brightness uniformity can partly adjoin because of prism pattern and diffusion and strengthened, and the visual angle of liquid crystal display (LCD) device also can strengthen.Thereby can strengthen the display quality of LCD device.In addition, in the LCD device, adopt the diffuser that does not adopt by utilizing refraction and reflection characteristic that light is carried out the recess of diffusion or projection by utilizing scattering properties that light is carried out diffusion, thereby can strengthen the brightness of LCD device.
In addition, in light control film, be formed with air duct, to strengthen the front face brightness of LCD device.In addition, the top edge of prism pattern is not exposed to its outside, therefore can prevent to produce cut in another optical sheet.Moreover optical sheet comprises diffusion part or air bag, therefore can improve the brightness uniformity of LCD device.In addition, omitted additional diffusion disk, so the assembling process of LCD device can be simplified and the manufacturing cost of LCD device can reduce.
In addition, optical sheet comprises temporary transient adhesion coating, therefore can easily repair the flaw that produces because of external impact.In addition, temporary transient adhesion pattern according to the present invention keeps active bonding state, therefore can improve the ability of resisting external impact.In addition, can pass through the display quality that display unit are improved at enhanced brightness, visual angle etc., and the thickness of backlight assembly or LCD device can reduce, thereby can make that the display unit of making is thinner.And the manufacture process of described optical sheet can become simply, thereby can reduce the defect rate of described optical sheet, to reduce the manufacturing cost of optical sheet.
Description of drawings
By the reference accompanying drawing exemplary of the present invention is described in detail, above-mentioned and other feature and advantage of the present invention will become more obvious, in the accompanying drawings:
Fig. 1 is the profile of explanation according to liquid crystal display (LCD) device of exemplary 1;
Fig. 2 is the perspective view of the optical sheet in the key diagram 1;
Fig. 3 is the enlarged perspective of " A " part among Fig. 2;
Fig. 4 A is the profile of explanation light transmission by the optical sheet among Fig. 3;
Fig. 4 B is the image that the optical sheet among Fig. 4 A is shown;
Fig. 5 A is the profile of explanation according to the optical sheet of exemplary 2 of the present invention;
Fig. 5 B is the image that the optical sheet among Fig. 5 A is shown;
Fig. 5 C is the image that illustrates according to the optical sheet of another embodiment of the invention;
Fig. 5 D is the image that illustrates according to the optical sheet of another embodiment of the present invention;
Fig. 6 is the perspective view of explanation according to the optical sheet of exemplary 3 of the present invention;
Fig. 7 A is the profile of the optical sheet in the key diagram 6;
Fig. 7 B is the image that the optical sheet among Fig. 6 is shown;
Fig. 7 C is the image that illustrates according to the optical sheet of another embodiment of the invention;
Fig. 8 is the perspective view of explanation according to the optical sheet of exemplary 4 of the present invention;
Fig. 9 is the profile of the optical sheet in the key diagram 8;
Figure 10 is the perspective view of explanation according to the optical sheet of exemplary 5 of the present invention;
Figure 11 is the profile of explanation light transmission by the optical sheet among Figure 10;
Figure 12 is the image that illustrates according to the optical sheet of another embodiment of the invention;
Figure 13 is the image that illustrates according to the optical sheet of another embodiment of the present invention;
Figure 14 is the image that illustrates according to the optical sheet of another embodiment of the present invention;
Figure 15 is the image that illustrates according to the optical sheet of another embodiment of the present invention;
Figure 16 is the profile of explanation according to the LCD device of exemplary 6 of the present invention;
Figure 17 is the perspective view of the optical sheet among explanation Figure 16;
Figure 18 is the enlarged perspective of " B " part among Figure 17;
Figure 19 A, 20,21,22 and 23A be the profile of the manufacture method of the optical sheet of explanation among Figure 18;
Figure 19 B is the image that the prism pattern among Figure 19 A is shown;
Figure 23 B is the profile of explanation optical sheet according to another embodiment of the invention;
Figure 24 is the profile of explanation according to the optical sheet of exemplary 7 of the present invention;
Figure 25 A is the perspective view that shows according to the optical sheet of exemplary 8 of the present invention;
Figure 25 B and 25C are the image that shows the optical sheet of Figure 25 A;
Figure 26,27 and 28 is the cutaway view that shows the method for the optical sheet among the shop drawings 25A;
Figure 29 A is the perspective view that shows according to the optical sheet of exemplary 9 of the present invention;
Figure 29 B and 29C are the image that shows the optical sheet of Figure 29 A;
Figure 30 A, 33 and 34 the perspective views of method for the optical sheet that shows shop drawings 29A;
Figure 30 B is the image that shows the prism pattern of Figure 30 A;
Figure 31 and 32 the cutaway views of method for the optical sheet that shows shop drawings 29A;
Figure 34 B, 34C and 34D are the image that shows the optical sheet of Figure 34 A;
Figure 35 A is the cutaway view that shows according to the optical sheet of exemplary 10 of the present invention;
Figure 35 B and 35C are the image that shows the optical sheet of Figure 35 A;
Figure 36 A is the cutaway view that shows according to the optical sheet of exemplary 11 of the present invention;
Figure 36 B is the image that shows the prism pattern of Figure 36 A;
Figure 36 C and 36D are the image that shows the optical sheet of Figure 36 A;
Figure 37 A is the perspective view that shows according to the optical sheet of exemplary 12 of the present invention;
Figure 37 B and 37C are the image that shows optical sheet according to another embodiment of the invention;
Figure 37 D, 37E and 37F are the image that shows according to another example of the optical sheet of exemplary 12 of the present invention;
Figure 38 is the perspective view that shows according to the optical sheet of exemplary 13 of the present invention;
Figure 39 A is the perspective view that shows according to the optical sheet of exemplary 14 of the present invention;
Figure 39 B and 39C are the image that shows the optical sheet of Figure 39 A;
Figure 39 D and 39E are the image that shows according to another example of the optical sheet of exemplary 14 of the present invention;
Figure 40 A is the perspective view that shows according to the optical sheet of exemplary 15 of the present invention;
Figure 40 B and 40C are the image that shows the optical sheet of Figure 40 A;
Figure 40 D and 40E are the image that shows according to another example of the optical sheet of exemplary 15 of the present invention;
Figure 41 A is to be the perspective view that according to the optical sheet of exemplary 16 of the present invention;
Figure 41 B and 41C are the image that shows the optical sheet of Figure 41 A;
Figure 42 A is the perspective view that shows according to the optical sheet of exemplary 17 of the present invention;
Figure 42 B and Figure 42 C are the image that shows the optical sheet of Figure 42 A;
Figure 43 A is the perspective view that shows according to the optical sheet of exemplary 18 of the present invention;
Figure 43 B and 43C are the image that shows the optical sheet of Figure 43 A;
Figure 44 A is the perspective view that shows according to the optical sheet of exemplary 19 of the present invention;
Figure 44 B and 44C are the image that shows the optical sheet of Figure 44 A;
Figure 45 is the profile of explanation according to the LCD device of exemplary 20 of the present invention;
Figure 46 is the perspective view of the optical sheet of explanation Figure 45;
Figure 47 is the perspective view of the amplification of Figure 46 ' C ' part;
Figure 48,49,50 and 51 is profiles that the method for the optical sheet of making Figure 47 is described;
Figure 52 is the perspective view of explanation according to the optical sheet of exemplary 21 of the present invention;
Figure 53,54,55 and 56 is profiles that the method for the optical sheet of making Figure 52 is described;
Figure 57 is the profile of explanation manufacturing according to the part of the method for the optical sheet of exemplary 22 of the present invention;
Figure 58 is the profile of explanation according to the optical sheet of exemplary 23 of the present invention;
Figure 59 is the profile that the method for the optical sheet of making Figure 58 is described;
Figure 60 is the profile of explanation according to the optical sheet of exemplary 24 of the present invention;
Figure 61 is the profile of explanation according to the optical sheet of exemplary 25 of the present invention;
Figure 62 is the perspective view of explanation according to the optical sheet of exemplary 26 of the present invention;
Figure 63 is the perspective view of explanation according to the optical sheet of exemplary 27 of the present invention;
Figure 64 is the perspective view of explanation according to the optical sheet of exemplary 28 of the present invention;
Figure 65 is the perspective view of explanation according to the optical sheet of exemplary 29 of the present invention;
Figure 66 is the perspective view of explanation according to the optical sheet of exemplary 30 of the present invention;
Figure 67 is the perspective view of explanation according to the optical sheet of exemplary 31 of the present invention;
Figure 68 is the profile of explanation according to the optical sheet of exemplary 32 of the present invention;
Figure 69 is the perspective view of explanation according to the optical sheet of exemplary 33 of the present invention;
Figure 70 is the perspective view of explanation according to the optical sheet of exemplary 34 of the present invention;
Figure 71 is the perspective view of explanation according to the optical sheet of exemplary 35 of the present invention;
Figure 72 is the perspective view of explanation according to the optical sheet of exemplary 36 of the present invention;
Figure 73 is the perspective view of explanation according to the optical sheet of exemplary 37 of the present invention;
Figure 74 is the profile of the optical sheet of explanation Figure 73.
The specific embodiment
Hereinafter the present invention is described more all sidedly with reference to the accompanying drawing that wherein shows exemplary of the present invention.Yet, can implement the present invention by different form, and the present invention should not be interpreted as being subjected to the restriction of the exemplary of this paper.On the contrary, the purpose that these exemplary are provided is to make the disclosure thoroughly complete, and will pass on scope of the present invention fully to those skilled in the art.In the accompanying drawings, may amplify the size and the relative size in layer and zone for clarity.
Should be appreciated that it can be located immediately at, is connected to or is coupled on other elements or the layer, perhaps may have the element or the layer of insertion when speaking of element or layer " being positioned at ", " being connected to " or " being coupled to " another element or layer and go up.On the contrary, element " is located immediately at " when speaking of, when " being connected directly to " or " coupling directly to " another element or layer are gone up, then do not have the element or the layer of insertion.Identical label refers to components identical in full.Term used herein " and/or " comprise one or more any combinations and all combinations in the cited relevant item.
Can be used for describing various elements, parts, zone, layer and/or part in this article though should be appreciated that the term first, second, third, etc., these elements, parts, zone, layer and/or part should not be limited to these projects.These terms only are used for an element, parts, zone, layer and/or part and another zone, layer or part are distinguished.Thereby hereinafter first element of Tao Luning, parts, zone, layer or part also can be called second element, parts, zone, layer or part, and without departing the teaching of the invention.
Relative term on herein can usage space, for example " ... under ", " .... the below ", " below ", " top ", " top " etc. so that describe the relativeness of element shown in the accompanying drawing or feature and other elements or feature.Should be appreciated that term relative on the space is intended to comprise equipment and is using or the different azimuth except the orientation described in accompanying drawing during operation.For example, if the upset of the equipment in the accompanying drawing, the element that is described as " below other elements or feature " or " under other elements or feature " will be oriented to " being positioned at other elements or feature top ".Thereby, exemplary term " ... the below " can comprise top direction and below direction.Described equipment can be otherwise directed (rotate 90 degree or be in other orientation), thereby relative description language on the space of correspondingly using in the herein interpreted.
Term used herein only is intended to describe specific exemplary and unrestricted the present invention.When using in this article, " (a or an) " of singulative and " being somebody's turn to do (the) " also are intended to comprise plural form, unless offer some clarification in addition in the context.Also can further understand, when using in this manual, term " comprises (comprise and/or comprising) ", and expression exists described feature, integral body, step, operation, element and/or parts, but do not get rid of to exist or add one or more further features, integral body, step, operation, element, parts and/or its combination is not arranged.
This paper reference is described exemplary of the present invention as the sectional view of the indicative icon of Utopian exemplary of the present invention (and intermediate structure).Therefore, for example can expect the variation of the shape shown that causes owing to manufacturing technology and/or tolerance.Thereby exemplary of the present invention should not be construed as the given shape in the zone that is confined to illustrate herein, but should be interpreted as comprising the form variations that is for example produced by manufacturing.For example, the injection region that is depicted as rectangle will have rounding or crooked feature usually and/or will have the implantation concentration gradient in its edge, rather than the binary from the injection region to non-injection region changes.Similarly, the buried regions that forms by injection may cause some injections in the zone between buried regions and surface of take place injecting by it.Thereby the zone shown in the accompanying drawing is actually schematically, and its shape is not the true form that is intended to the zone of indication device, and is not to be intended to limit the scope of the invention.
Unless otherwise defined, all terms used herein (comprising technology and scientific terminology) are identical with the common implication of understanding of those skilled in the art.Further be further appreciated that such as defined those terms in the common dictionary should be interpreted as having with its association area in the corresponding to implication of implication, unless and this paper define clearly, can not make an explanation to it with idealized or too regular mode.
Hereinafter describe the present invention with reference to the accompanying drawings in detail.
Exemplary 1
Fig. 1 is the profile of explanation according to liquid crystal display (LCD) device of exemplary 1.
With reference to Fig. 1, this LCD device comprises light source module 110, optical sheet 120 and LCD panel 130.
Light source module 110 provides light to optical sheet 120.Light source module 110 can be classified as direct illumination type light source module or edge light type light source module.
When light source module 110 is direct illumination type light source module, can be with a plurality of light sources (not shown), for example cold-cathode fluorescence lamp (CCFL), plane fluorescent lamp (FFL), light emitting diode (LED) etc. are arranged in the plane.
When light source module 110 was edge light type light source module, light source module 110 can comprise light source (for example being fluorescent lamp, LED etc.) and the LGP (not shown) that the light that this light source sends is guided to optical sheet 120.
Optical sheet 120 is arranged on the optical characteristics of the light that sends with enhancing light source module 110 on the light source module 110.For example, optical sheet 120 can strengthen front face brightness, brightness uniformity etc.Optical sheet 120 can comprise diffusing panel, diffusion disk, prismatic lens, pellicle, diaphragm etc.In the present embodiment, optical sheet 120 can comprise the prismatic lens that will describe hereinafter.
LCD panel 130 is arranged on the optical sheet 120, to come display image by the light that passes optical sheet 120 is transmitted by the liquid crystal layer that is placed between two substrates.As selection, also can replace LCD panel 130 with various passive type display floaters (for example electrophoretic display device, EDD).
Fig. 2 is the perspective view of the optical sheet in the key diagram 1.Fig. 3 is the enlarged perspective of " A " part among Fig. 2.
With reference to Fig. 2 and Fig. 3, optical sheet comprises basement membrane 1201, prism pattern 1210 and diffusing member 1220.In the present embodiment, optical sheet can also comprise a plurality of prism pattern 1210 and a plurality of diffusing member 1220.
Basement membrane 1201 can have film shape.Basement membrane 1201 can comprise lucite.For example, lucite can comprise polyethylene terephthalate (PET), methacrylic resin, acrylic resin, polycarbonate (PC) resin, mylar, vinyl chloride resin etc.In the present embodiment, basement membrane 1201 comprises polyethylene terephthalate (PET).
Prism pattern 1210 separates each other on basement membrane 1201 and gives prominence to.In the present embodiment, prism pattern 1210 is integrally formed with basement membrane 1201.
Prism pattern 1210 has many different shape of cross sections.In Fig. 2 and Fig. 3, the cross section of each prism pattern 1210 can be isosceles triangle.In this case, the cross section of each prism pattern 1210 can have right-angle triangle.In another embodiment, the cross section of each prism pattern 1210 can have 3 to 32 limits.For example, each prism pattern 1210 can have trapezoidal, pentagon, heptagon etc. than downside.
When the cross section of each prism pattern 1210 had isosceles triangle, the drift angle of isosceles triangle can have about 1 and spend the scope of about 179 degree.
Prism pattern 1210 comprises lucite.In the present embodiment, prism pattern 1210 comprises photocurable material, Thermocurable material etc., also comprises the material that is different from basement membrane 1201.In this case, thus prism pattern 1210 will can be enhanced along the front face brightness perpendicular to the direction guiding LCD device of basement membrane 1201 from the light of basement membrane 1201 incidents.
Diffusing member 1220 is set between the prism pattern 1210.Diffusing member 1220 is set between the side surface of adjacent prism pattern 1210.For example, diffusing member 1220 can be integrally formed with basement membrane 1201 and prism pattern 1210.Diffusing member 1220 and prism pattern 1210 are from forming with one deck.
The diffusing surface of diffusing member 1220 is parallel with basement membrane 1201.
The diffusing surface that a plurality of diffusion points spread all over diffusing member 1220 forms.In the present embodiment, the diffusion point comprises a plurality of recesses 1225 that are formed on the diffusion point.Recess 1225 is embedded in each prism pattern 1210 towards the direction opposite with the projected direction of each prism pattern 1210 with respect to diffusing surface.
When observing from vertical view, the center of adjacent recesses 1225 is aligned to triangle.As selection, the center of adjacent recesses can be arranged in rectangle.
For example, recess 1225 can have hemispherical.That is, when observing from vertical view, prism pattern 1210 has in the upwardly extending shape of first party; But each recess 1225 has examples of dot shaped.As selection, each recess 1225 can have for example different shape such as elliptical point, polygon form point.
In the present embodiment, recess 1225 is provided with adjacent to each other.In another embodiment, recess 1225 is separated each other, and can be planar section between adjacent recess 1225.
Fig. 4 A is the profile of explanation light transmission by the optical sheet among Fig. 3.Fig. 4 B is the image that the optical sheet among Fig. 4 A is shown.
With reference to Fig. 1,2,3,4A and 4B, light L1, L2, L3 and the L4 that light source module 110 sends incides the lower surface of basement membrane 1201.Optical sheet comprises corresponding to the prism region PR of refractive pattern 1210 with corresponding to the diffusion area DR of diffusing member 1220.
Light L1 to the prism region PR of optical sheet transmission reflects at the outer surface of prism pattern 1210, on the vertical direction that is directed to basement membrane 1201.
To light L2, the L3 of the diffusion area DR of optical sheet transmission and L4 recess 1225 diffusions by diffusing member 1220.
Part is reflected by recess 1225 to the light of diffusion area DR transmission, and subsequently by the lateral surface total reflection of each prism pattern 1210 with on the vertical direction that is directed to basement membrane 1201.
And, part to the light L3 of diffusion area DR transmission by the surperficial total reflection of recess 1225, and subsequently by each prism pattern 1210 refraction to be directed on the direction vertical with basement membrane 1201.
In this case, part is also reflected by recess 1225 to the light L4 of diffusion area DR transmission, and is directly incident on LCD panel 130 subsequently.
In the present embodiment, the recess 1225 of diffusing member 1220 can be used as the lenticule that light L2, L3 and L4 are reflected or reflect.
According to the present embodiment, prism pattern 1210 and diffusing member 1220 side by side are provided with, thereby front face brightness and brightness uniformity are enhanced simultaneously.
And, owing in the LCD device, adopted the recess 1225 that utilizes refraction and reflection characteristic that light is carried out diffusion, and do not adopt the diffusion device that utilizes scattering nature that light is carried out diffusion, thus the brightness of LCD device can be enhanced.
Exemplary 2
Fig. 5 A is the profile of explanation according to the optical sheet of exemplary 2 of the present invention.Fig. 5 B is the image that the optical sheet among Fig. 5 A is shown.In the present embodiment, except diffusing member, the optical sheet optical sheet with exemplary 1 substantially is identical, any the describing in further detail about similar elements in Therefore, omited.
With reference to Fig. 5 A and Fig. 5 B, diffusing member 1230 is set between the prism pattern 1210.
A plurality of juts 1235 are formed on the diffusing surface of diffusing member 1230.Jut 1235 is outstanding on the direction identical with the projected direction of each prism pattern 1210 with respect to diffusing surface.
For example, jut 1235 can have hemispherical.That is, when observing from vertical view, prism pattern 1210 has in the upwardly extending shape of first party; But each jut 1235 has examples of dot shaped.As selection, each jut 1235 can have shapes such as elliptical point, polygon form point.In another embodiment, each jut 1235 can have the arbitrary polygon pattern.
In the present embodiment, jut 1235 is provided with adjacent to each other.In another embodiment, jut 1235 is provided with separating each other, and can be planar section between adjacent jut 1235.
Fig. 5 C is the image that illustrates according to the optical sheet of another embodiment of the invention.In the present embodiment, except diffusing member, the optical sheet optical sheet with exemplary 2 substantially is identical, any the describing in further detail about similar elements in Therefore, omited.
With reference to Fig. 5 C, diffusing member is arranged on the prism pattern, and a plurality of recess is formed on the diffusing surface parallel with the base substrate.This recess has hemispherical.
Fig. 5 D is the image that illustrates according to the optical sheet of another embodiment of the present invention.In the present embodiment, except diffusing member, optical sheet is identical with optical sheet among Fig. 5 C substantially, any the describing in further detail about similar elements in Therefore, omited.
With reference to Fig. 5 D, a plurality of juts are formed on the diffusing surface of diffusing member.Jut has hemispherical.
Exemplary 3
Fig. 6 is the perspective view of explanation according to the optical sheet of exemplary 3 of the present invention.Fig. 7 A is the profile of the optical sheet in the key diagram 6.Fig. 7 B is the image that the optical sheet among Fig. 6 is shown.In the present embodiment, except diffusing member, the optical sheet optical sheet with exemplary 1 substantially is identical, any the describing in further detail about similar elements in Therefore, omited.
With reference to Fig. 6,7A and 7B, a plurality of recesses 1245 are formed on the diffusing surface of diffusing member 1240.Recess 1245 is recessed on the direction opposite with the projected direction of each prism pattern 1210 with respect to diffusing surface.In another embodiment, a plurality of juts (not shown) can form on the diffusing surface on the direction identical with the projected direction of each prism pattern 1210 outstanding.
For example, recess 1245 can have pyramid.That is, prism pattern 1210 has in the upwardly extending shape of first party; But each recess 1245 has the rectangular dots shape.
In Fig. 7 A, with respect to the vertical direction of basement membrane 1201, the interior angle θ 1 of the drift angle of each prism pattern 1210 is different with the interior angle θ 2 of the drift angle of each recess 1245.For example, the interior angle θ 1 of the drift angle of each prism pattern 1210 can be bigger than the interior angle θ 2 of the drift angle of each recess 1245.
In the present embodiment, recess 1245 is provided with adjacent to each other.In another embodiment, recess 1245 is provided with separating each other, and can have planar section between adjacent recesses 1245.
Fig. 7 C is the image of expression according to the optical sheet of another embodiment of the invention.In the present embodiment, except diffusing member, the optical sheet optical sheet with exemplary 3 substantially is identical, any the describing in further detail about similar elements in Therefore, omited.
With reference to Fig. 7 C, a plurality of diffusing members are arranged on the prism pattern, and a plurality of recess is formed on the diffusing surface parallel with the base substrate.Recess is a pyramid.
Exemplary 4
Fig. 8 is the perspective view of explanation according to the optical sheet of exemplary 4 of the present invention.Fig. 9 is the profile of the optical sheet in the key diagram 8.In the present embodiment, except auxiliary diffusing member, the optical sheet optical sheet with exemplary 1 substantially is identical, any the describing in further detail about similar elements in Therefore, omited.
With reference to Fig. 8 and Fig. 9, optical sheet comprises basement membrane 1201, a plurality of prism pattern 1210, diffusing member 1250 and auxiliary diffusing member 1257.In the present embodiment, on optical sheet, be limited with prism region PR, corresponding to the diffusion area DR1 of diffusing member 1250 and corresponding to the auxiliary diffusion area DR2 of auxiliary diffusing member 1257 corresponding to prism pattern 1210.
Diffusing member 1250 is arranged between the adjacent prisms pattern 1210.In the present embodiment, diffusing member 1250 separates with adjacent prism pattern 1210.
A plurality of recesses 1255 are formed on the diffusing surface of diffusing member 1250.
A plurality of diffusing members 1257 are arranged between diffusing member 1250 and the prism pattern 1210, to connect diffusing member 1250 and prism pattern 1210.
Auxiliary diffusing member 1257 has the slight curving surface configuration parallel with prism pattern 1210, be transferred to the light of auxiliary diffusion area DR2 with refraction or reflection, thereby auxiliary diffusing member 1257 can strengthen the front face brightness and the brightness uniformity of LCD device.In the present embodiment, auxiliary diffusing member 1257 can have for example different shape such as jut, recess.
In the present embodiment, prism pattern 1210, diffusing member 1250 and auxiliary diffusing member 1257 be by forming with one deck, and integrally formed with basement membrane 1201.
According to the present embodiment, optical sheet has auxiliary diffusing member 1257, thereby the front face brightness of LCD device and brightness uniformity can be enhanced.
Exemplary 5
Figure 10 is the perspective view of explanation according to the optical sheet of exemplary 5 of the present invention.In the present embodiment, except prism pattern and auxiliary diffusing member, the optical sheet optical sheet with exemplary 1 substantially is identical, any the describing in further detail about similar elements in Therefore, omited.
With reference to Figure 10, optical sheet comprises basement membrane 1201, a plurality of prism pattern 1310 and 1315, diffusing member 1220 and auxiliary diffusing member 1330.In the present embodiment, corresponding to the prism region PR of prism pattern 1310, be limited on the optical sheet corresponding to the diffusion area LDR of diffusing member 1220 and corresponding to the auxiliary diffusion area HDR of auxiliary diffusing member 1330.
Prism pattern 1310 and 1315 is configured to separate each other on basement membrane 1201.In the present embodiment, prism pattern 1310 and 1315 has the rectangular shape that faces with each other.Prism pattern 1310 and 1315 and basement membrane 1201 integrally formed by photocurable resin.
Diffusing member 1220 is set at adjacent prisms pattern 1310 and 1315 adjacent than between the downside to connect the adjacent of the two than downside.
A plurality of recesses 1225 are formed on the diffusing surface of diffusing member 1220.In the present embodiment, each recess 1225 has semi-spherical shape.In this case, each recess 1225 can have shapes such as semielliptical shape, polygonal pyramid shape.In another embodiment, a plurality of juts (not shown) can be formed on the diffusing surface of diffusing member 1220.
Auxiliary diffusing member 1330 is arranged between the adjacent upper side of adjacent pyramid pattern 1310 and 1315 to connect the adjacent upper side of the two.
A plurality of supplementary projection parts 1335 are formed on the auxiliary diffusing surface of auxiliary diffusing member 1330.In the present embodiment, each supplementary projection part 1335 has semi-spherical shape.As selection, each supplementary projection part 1335 can have shapes such as hemispherical, semielliptical shape, polygonal pyramid shape.In another embodiment, a plurality of recesses (not shown) can be formed on the auxiliary diffusing surface of auxiliary diffusing member 1330.
In the present embodiment, prism pattern 1310 and 1315, diffusing member 1220 and auxiliary diffusing member 1330 have photocurable resin with integrally formed with basement membrane 1201.
Figure 11 is the profile of explanation light transmission by the optical sheet among Figure 10.
With reference to Fig. 1,10 and 11, light L5, L6, L7 and the L8 that light source module 110 sends is from the lower surface incident of basement membrane 1201.Optical sheet comprises corresponding to the prism region IR of prism pattern 1310 and 1315, corresponding to the diffusion area LDR of diffusing member 1220 and corresponding to the auxiliary diffusion area HDR that assists diffusing member 1330.
Refraction takes place to be directed on the direction vertical with basement membrane 1201 to the light L6 of the prism region IR of optical sheet transmission in prism pattern 1310 and 1315 outer surface.
In incident ray L5, L6, L7 and L8, part is to the light L7 and the L8 of the diffusion area LDR of optical sheet transmission, promptly, light L7 is by recess 1225 diffusions of diffusing member 1220, and the light of remainder is light L8 by diffusing member 1220 diffusions with by prism pattern 1310 and 1315 diffusions or refraction.
To the light L5 of the auxiliary diffusion area HDR of optical sheet transmission jut 1335 diffusions by auxiliary diffusing member 1330.
In the present embodiment, the recess 1225 of diffusing member 1220 and the jut 1335 of auxiliary diffusing member 1330 can play the effect that light L5, L7 and L8 are reflected or reflect.
According to the present embodiment, optical sheet has auxiliary diffusing member 1330, thereby the front face brightness of LCD device and brightness uniformity can be enhanced.
Figure 12 is the image that illustrates according to the optical sheet of another embodiment of the present invention.In the present embodiment, except diffusing member, the optical sheet optical sheet with exemplary 1 substantially is identical, any the describing in further detail about similar elements in Therefore, omited.
With reference to Figure 12, diffusing member is arranged on the auxiliary prism pattern to comprise that a plurality of edges direction parallel with prism pattern extended between the adjacent prisms pattern.In the present embodiment, the auxiliary prism pattern is recessed between the adjacent prisms pattern.
Figure 13 is the image that illustrates according to the optical sheet of another embodiment of the present invention.In the present embodiment, except diffusing member, the optical sheet optical sheet with exemplary 1 substantially is identical, any the describing in further detail about similar elements in Therefore, omited.
With reference to Figure 13, diffusing member is arranged on each prism pattern.Diffusing member is included in the upwardly extending diffusion groove in the side parallel with prism pattern.In the present embodiment, the diffusion groove has triangular cross-sectional shape.
Figure 14 is the image that illustrates according to the optical sheet of another embodiment of the present invention.In the present embodiment, except diffusing member, the optical sheet optical sheet with exemplary 1 substantially is identical, any the describing in further detail about similar elements in Therefore, omited.
With reference to Figure 14, diffusing member is arranged between the adjacent prism pattern to comprise a plurality of auxiliary prism patterns.
Figure 15 is the image that illustrates according to the optical sheet of another embodiment of the present invention.In the present embodiment, except diffusing member, the optical sheet optical sheet with exemplary 1 substantially is identical, any the describing in further detail about similar elements in Therefore, omited.
With reference to Figure 15, diffusing member is arranged on the top of each prism pattern, with comprise a plurality of in the side parallel with prism pattern upwardly extending diffusion groove.In the present embodiment, each diffusion groove has triangular cross-sectional shape.
In another embodiment, because thin cut or minute crack is formed on the surface of each prism pattern and diffusion point, thereby the half-power angle of brightness uniformity, visual angle and optical sheet can be enhanced.
According to the present invention, front face brightness and brightness uniformity can by and put prism pattern and diffusion part and be enhanced, and the visual angle of LCD device can strengthen.And for example display defects such as white point, stain, moore phenomenon can improve.
And, utilize refraction and reflection characteristic that recess or the jut that light carries out diffusion is used in the LCD device, do not utilize diffusive properties to come light is carried out the diffusion device of diffusion and do not adopt, thereby the brightness of LCD device can be enhanced.
And optical sheet has auxiliary diffusing member, thereby the front face brightness of LCD device and brightness uniformity can be enhanced.
Exemplary 6
Figure 16 is the profile of explanation according to the LCD device of exemplary 6 of the present invention.
With reference to Figure 16, the LCD device comprises light source module 210, optical sheet 220 and LCD panel 230.
Light source module 210 provides light to optical sheet 220.Light source module 210 can comprise direct illumination type light source module and edge light type light source module.
When light source module 210 is direct illumination type light source module, can be with a plurality of light sources (not shown), for example CCFL, FFL, LED etc. are arranged on the flat board.
When light source module 210 was edge light type light source module, light source module 210 can comprise light source (for example fluorescent lamp, LED etc.) and the LGP (not shown) that the light that light source sends is guided to optical sheet 220.
Optical sheet 220 is arranged on the optical characteristics of the light that sends with enhancing light source module 210 on the light source module 210.In the present embodiment, optical sheet 220 strengthens front face brightness, brightness uniformity etc.In the present embodiment, optical sheet 220 can comprise the prismatic lens that will describe hereinafter.
In another embodiment, the LCD device may further include various optical sheets, for example diffusing panel, diffusion disk, prismatic lens, pellicle, second basement membrane etc.
LCD panel 230 is arranged on the optical sheet 220, makes the light transmission of passing optical sheet 220 by putting into the liquid crystal layer between two substrates, with display image.As selection, also can adopt various passive type display floaters (for example electrophoretic display device, EDD) to replace LCD panel 230.
Figure 17 is the perspective view of the optical sheet among explanation Figure 16.Figure 18 is the enlarged perspective of " B " part among Figure 17.
With reference to Figure 17 and 18, optical sheet 220 comprises first basement membrane 2201, light control film 2210 and second basement membrane 2202.
First basement membrane 2201 can have film shape.First basement membrane 2201 can comprise lucite.For example, synthetic resin can comprise polyethylene terephthalate (PET), methacrylic resin, acrylic resin, polycarbonate (PC) resin, mylar, vinyl chloride resin etc.In the present embodiment, first basement membrane 2201 comprises polyethylene terephthalate (PET).
Light control film 2210 is arranged on first basement membrane 2201 air duct 2220 to comprise that a plurality of edges direction parallel with first basement membrane 2201 arranged.
In the present embodiment, a plurality of prism pattern 2212 and organic layer 2214 are bonded to each other and form the air duct 2220 of light control film 2210, thereby air duct 2220 has triangular cross section.As selection, each air duct 2220 can have isosceles triangle, right angled triangle, shape such as trapezoidal.In another embodiment, each air duct 2220 can have for example polygon, the shape of a hoof, semicircle, circular iso-cross-section shape.
Prism pattern 2212 is attached to the upper surface of first basement membrane 2201 to limit the surface of air duct 2220.
Prism pattern 2212 comprises lucite.In the present embodiment, prism pattern 2212 comprises photocurable material, Thermocurable material etc., also comprises the material that is different from first basement membrane 2201.In this case, the prism pattern 2212 and first basement membrane 2201 can be by forming with one deck.That is, the material of prism pattern 2212 is identical with the material of first basement membrane 2201.Therefore, from the light of first basement membrane, 2201 incidents by first basement membrane 2201 along direction guiding, to strengthen the front face brightness of LCD device perpendicular to first basement membrane 2201.
Organic layer 2214 covers the top edge of prism pattern 2212 to limit the upper surface of air duct 2220.In the present embodiment, organic layer 2214 has the material identical materials with prism pattern 2212, with integrally formed with prism pattern 2212.
Two sides of prism pattern 2212 extend and the degree of depth at the imaginary edge that arrives less than the thickness of organic layer 2214.
In the present embodiment, the prism pattern 2210 and first basement membrane 2201 are integrally formed.
Second basement membrane 2202 is arranged on the organic layer 2214 of light control film 2210 with protection light control film 2210.In the present embodiment, second basement membrane 2202 has the material identical materials with first basement membrane 2201.As selection, can omit second basement membrane 2202.
First basement membrane 2201, light control film 2210 and second basement membrane 2202 can form each other.
Figure 19 A, 20,21,22 and 23A be the profile of the manufacture method of the optical sheet of explanation among Figure 18.Figure 19 B is the image that the prism pattern among Figure 19 A is shown.Figure 19 A is the profile of explanation step of formation prism pattern 2212 ' on first basement membrane 2201, and Figure 19 B is the image that the prism pattern 2212 ' among Figure 19 A is shown.
With reference to Figure 19 A and Figure 19 B, a plurality ofly be formed on first basement membrane 2201 in the upwardly extending prism pattern 2212 ' in side parallel to each other.Prism pattern 2212 ' can be formed on first basement membrane 2201 by for example the whole bag of tricks such as roller, press, printing, etching.
Figure 20 is the profile of explanation step of applying coating 2214 ' on second basement membrane 2202.
With reference to Figure 20, coating 2214 ' is not cured thereby has flowability.For example, coating 2214 ' can comprise polyvinyl resin.
Figure 21 is the profile of explanation step of irradiates light on coating.
With reference to Figure 21, ultraviolet lighting is mapped to the coating 2214 ' (as shown in figure 20) that is coated on second basement membrane 2202 to increase viscosity.In the present embodiment, control will shine the ultraviolet light intensity on the coating 2214 ', thereby be had the gel form that keeps mobile by the coating 2214 ' of UV-irradiation.
In another embodiment, solvent evaporates from the coating 2214 ' that is coated on second basement membrane 2202, thereby coating 2214 ' can have gel form.When the coating 2214 ' on being coated in second basement membrane 2202 has full-bodied gel form, can omit the step of irradiating ultraviolet light.
Figure 22 is for arranging the profile of the step of second basement membrane among Figure 21 on first basement membrane of explanation in Figure 19 A.
With reference to Figure 22, second basement membrane 2202 is arranged on first basement membrane 2201, thus feasible coating 2214 through UV-irradiation " towards prism pattern 2212 '.
In the present embodiment, through the coating 2214 of UV-irradiation " have high viscosity, thus coating 2214 " can be to the side surface sputter of prism pattern 2212 ', so the side surface edge of air duct 2220 has acute angle.
Then, be embedded into the top with prism pattern 2212 ' to 2201 extruding of first basement membrane will be by the coating 2214 ' of UV-irradiation for second basement membrane 2202.For example, second basement membrane 2202 can be extruded by machineries such as press, rollers.
Figure 23 A is the profile of the prism pattern among explanation and Figure 22 that coating combines.
With reference to Figure 22 and 23A, ultraviolet lighting is mapped to coating 2214 " on, to form organic layer 2214.
Prism pattern 2212 ' is inserted into will be by the coating 2214 of UV-irradiation " depth ratio coating 2214 " thickness little.That is, two of each prism pattern 2212 sides extend and the degree of depth " d " at the imaginary edge that reaches less than the thickness " h " of organic layer 2214.
Therefore, side surface is limited by prism pattern 2212, and upper surface is limited by organic layer 2214, thereby forms air duct 2220.
According to the present embodiment, air duct 2220 is formed at the inside of light control film 2210 to strengthen the front face brightness of LCD device.And the top edge of prism pattern 2212 also is not exposed to its outside, thereby can prevent to form cut on another optical sheet.
Figure 23 B is the profile of explanation optical sheet according to another embodiment of the invention.In the present embodiment, outside the deacration passage 2226, optical sheet is identical with the optical sheet of exemplary 6 substantially, any the describing in further detail about similar elements in Therefore, omited.
With reference to Figure 23 B, optical sheet comprises first basement membrane 2201, light control film 2216 and second basement membrane 2202.
Light control film 2216 is arranged on first basement membrane 2201 to comprise a plurality of air ducts of arranging 2226 on the direction parallel with first basement membrane 2201.In the present embodiment, the lateral edges of each air duct 2226 has sharp shape.
In the present embodiment, a plurality of prism pattern 2212, organic layer 2214 and diffusion marginal portion 2226a are bonded to each other to limit the air duct 2226 of light control film 2216.
Organic layer 2214 covers the top edge of prism pattern 2212 to limit the upper surface of air duct 2226.In the present embodiment, organic layer 2214 have with prism pattern 2212 identical materials with integrally formed with prism pattern 2212.In another embodiment, organic layer 2214 can comprise the tackifying resin different with the material of prism pattern 2212.
Diffusion marginal portion 2226a is formed on boundary member between prism pattern 2212 and the organic layer 2214 with diffused ray along the direction parallel with air duct 2226.
According to the manufacture method of the present embodiment substantially with Figure 19 A, 19B, 20,21,22 and 23A in the manufacture method of optical sheet identical.But in the step of the irradiating ultraviolet light in Figure 21, in order to form the diffusion marginal portion 2226a of each air duct 2226, the exposure of ultraviolet light is compared exemplary 6 to be increased to some extent, thereby has increased the viscosity of coating.
Exemplary 7
Figure 24 is the profile of explanation according to the optical sheet of exemplary 7 of the present invention.In the present embodiment, except diffusing layer, the optical sheet optical sheet with exemplary 1 substantially is identical, any the describing in further detail about similar elements in Therefore, omited.
With reference to Figure 24, optical sheet comprises first basement membrane 2201, light control film 2210, second basement membrane 2202 and diffusing layer 2230.
Diffusing layer 2230 is attached on second basement membrane 2202 to comprise a plurality of diffusion particles 2232 and resin 2234.Resin 2234 attaches to diffusion particle 2232 on second basement membrane 2202.In another embodiment, diffusion particle 2232 can be arranged in second basement membrane 2202 or first basement membrane 2201.
According to the present embodiment, optical sheet comprises diffusing layer 2230, thereby the brightness uniformity of LCD device can be enhanced.And, owing to omitted additional diffusion disk, thereby can simplify the assembling process of LCD device and can reduce the manufacturing cost of LCD device.
Exemplary 8
Figure 25 A is the perspective view of explanation according to the optical sheet of exemplary 8 of the present invention.Figure 25 B and 25C are the image that shows the optical sheet of Figure 25 A.In the present embodiment, except light control film, the optical sheet of optical sheet and exemplary 1 is basic identical, therefore, will omit describing in further detail about similar elements.
Referring to Figure 25 A, 25B and 25C, optical sheet comprises first basement membrane 2201, light control film 2310 and second basement membrane 2202.
Light control film 2310 is arranged on first basement membrane 2201, thereby comprises a plurality of air ducts 2320, and air duct 2320 is arranged on the direction parallel with first basement membrane 2201.In this exemplary, the lateral edges of air duct 2320 can be circle.
In the present embodiment, a plurality of prism pattern 2212, organic layer 2314 and curvature portion 2316 are connected, to form the air duct 2320 of light control film 2310.
Organic layer 2314 covers the top edge of prism pattern 2212, to limit the upper surface of air duct 2320.In the present embodiment, organic layer 2314 has and prism pattern 2212 identical materials, thereby integrally formed with prism pattern 2212.
Two sides of prism pattern 2212 extend to imaginary edge, and the degree of depth at this imagination edge is less than the thickness of organic layer 2314.
Curvature portion 2316 forms along the boundary member of the direction parallel with air duct 2320 between prism pattern 2212 and organic layer 2314, so that light is carried out diffusion.
In the present embodiment, prism pattern 2212, organic layer 2314 and curvature portion 2316 have mutually the same material, thereby integrally formed each other.
Figure 26,27 and 28 is the cutaway view that shows the method for the optical sheet among the shop drawings 25A.
Shown in Figure 19 A, on first basement membrane 2201, form a plurality of prism pattern 2212 '.
Figure 26 is for showing the cutaway view of the step of applying coating 2314 ' on second basement membrane 2202.
Referring to Figure 26, therefore coating 2314 ' uncured has flowability.In the present embodiment, omitted the step of the extra light of as shown in figure 21 irradiation.
Figure 27 is the cutaway view that shows the step of second basement membrane that Figure 26 is set on first basement membrane of Figure 19 A.
Referring to Figure 28, second basement membrane 2202 is set on first basement membrane 2201, thereby makes coating 2314 ' facing to prism pattern 2212 '.
Then, push second basement membrane 2202, thereby the top of prism pattern 2212 ' is inserted in the coating 2314 ' towards first basement membrane 2201.
In the present embodiment, coating 2314 ' has lower viscosity.Therefore, coating 2314 ' can be to the side diffusion of prism pattern 2212 '.
Figure 28 shows the cutaway view that as shown in figure 27 prism pattern is connected with coating.
Referring to Figure 27 and 28, because the surface tension that prism pattern 2212 causes, the part of coating 2314 ' diffuses to and diffusion part 2316 corresponding positions.
Then, ultraviolet lighting is incident upon on the coating 2314 ', to form organic layer 2314 and diffusion part 2316.
The degree of depth that each prism pattern 2212 ' is inserted is less than the thickness of coating 2314 '.That is to say, two sides of each prism pattern 2212 extend and the degree of depth " d " at the imaginary edge that arrives less than the thickness " h " of organic layer 2214.
Thereby, formed air duct 2320.The edge of the rounding that air duct 2320 comprises the side that limited by prism pattern 2212, limited by diffusion part 2316 and the upper surface that limits by organic layer 2214.
According to the present embodiment, light control film 2310 comprises curvature portion 2316, thereby makes the lateral edge of each air duct 2320 be circle.In addition, because curvature portion 2316 not having under the situation of additional dispersant light to be carried out diffusion, does not reduce brightness so can improve the uniformity of brightness.
Exemplary 9
Figure 29 A is the perspective view that shows according to the optical sheet of exemplary 9 of the present invention.Figure 29 B and 29C are the image that shows the optical sheet of Figure 29 A.In the present embodiment, except air bag, the optical sheet of optical sheet and exemplary 6 is basic identical, therefore, has omitted describing in further detail about similar elements.
Referring to Figure 29 A, 29B and 29C, optical sheet comprises first basement membrane 2201, light control film 2410 and second basement membrane 2202.
Light control film 2410 is arranged on first basement membrane 2201, thereby is included in a plurality of air ducts 2220 of arranging on the direction parallel with first basement membrane 2201.
In the present embodiment, prism pattern 2412 and organic layer 2412 interconnect, to form the air duct 2220 of light control film 2410.
On the top of each prism pattern 2412, form a plurality of air bags 2416.In the present embodiment, air bag 2416 is arranged between prism pattern 2412 and the organic layer 2414.For example, air bag 2416 can be hemispherical, polygonal pyramid shape, hexahedron etc.
The part of light that is incident to optical sheet is by air bag 2416 diffusions, thereby can improve brightness uniformity.
Figure 30 A, 33 and 34 the perspective views of method for the optical sheet that shows shop drawings 29A.Figure 30 B is the image that shows the prism pattern of Figure 30 A.Figure 31 and 32 the cutaway views of method for the optical sheet that shows shop drawings 29A.Figure 30 A is for showing the perspective view that forms the step of prism pattern 2412 ' on first basement membrane 2201.Figure 30 B is the image that shows the prism pattern 2412 ' of Figure 30 A.
Referring to Figure 30 A and 30B, each prism pattern 2412 ' all has the shape that its top is cut off.On the upper surface of prism pattern 2412 ', be formed with a plurality of recesses 2416 ' respectively.
In the present embodiment, recess 2416 ' is provided with adjacent to each other.Here, recess 2416 ' also can be separated mutually.
Figure 31 is for showing the cutaway view of the step of applying coating 2414 ' on second basement membrane 2202.
Referring to Figure 31, therefore coating 2414 ' uncured has flowability.
Figure 32 is the cutaway view that shows the step of irradiating ultraviolet light on the coating of Figure 31.
Referring to Figure 32, applying coating on second basement membrane 2202 (as shown in figure 31 2414 ') to increase viscosity, is incident upon ultraviolet lighting on this coating.
Figure 33 is the cutaway view that shows the step of second basement membrane that Figure 31 is set on first basement membrane of Figure 30 A.
Referring to Figure 33, second basement membrane 2202 is set on first basement membrane 2201, thereby makes coating 2414 " in the face of prism pattern 2412 '.In this case, the distance between first basement membrane 2201 and second basement membrane 2202 equals the height Tp and the coating 2414 of prism pattern 2412 ' substantially " thickness " h " sum.
Then, push second basement membrane 2202 towards first basement membrane 2201, thereby coating 2214 ' is inserted on the top of prism pattern 2212 ', ultraviolet lighting is incident upon on the coating 2214 '.
Figure 34 A shows the cutaway view that the prism pattern with Figure 33 is connected with coating.Figure 34 B, 34C and 34D are the image that shows the optical sheet of Figure 34 A.
Referring to Figure 33,34A, 34B, 34C and 34D, coating 2412 " a part covered the top of going up the recess 2416 ' that forms in prism pattern 2412 ', to form air bag 2416.
Prism pattern 2412 ' is inserted coating 2414 " the degree of depth less than coating 2414 " thickness " h ".Therefore, the lower surface of prism pattern 2412 and coating 2414 " lower surface between apart from the height Tp of Tf less than prism pattern 2412 ' before pushing.
Then, ultraviolet lighting is incident upon coating 2412 ", to form organic layer 2412.
Thereby, form air duct 2320 and air bag 2416.Air duct 2320 has side that is limited by prism pattern 2412 and the upper surface that is limited by organic layer 2414.Air bag 2416 has side and the lower surface that is limited by the recess 2416 ' that forms on the upper surface of prism pattern 2412, also have the upper surface that is limited by organic layer 2414.
According to the present embodiment, light control film 2410 comprises air bag 2416, thereby makes light not have diffusion under the situation of additional dispersant.Therefore, can improve brightness uniformity and not reduce brightness.
Exemplary 10
Figure 35 A is the cutaway view that shows according to the optical sheet of exemplary 10 of the present invention.Figure 35 B and 35C are the image that shows the optical sheet of Figure 35 A.In the present embodiment, except diffusing member, the optical sheet of optical sheet and exemplary 6 is basic identical, therefore, and with the further specific descriptions of omitting about similar elements.
Referring to Figure 35 A, 35B and 35C, light control film 2510 comprises a plurality of prism pattern 2512, a plurality of diffusion part 2515 and organic layer 2514.
Diffusion part 2515 is arranged between the prism pattern adjacent one another are 2512, so that light is carried out diffusion.
In the present embodiment, diffusion part 2515 comprises a plurality of hemispherical juts 2516.
The lower surface of the upper surface of the side of prism pattern 2512, diffusion part 2512 and organic layer 2514 can limit a plurality of air ducts 2520.
The light that is incident to optical sheet guides to its frontal from the peripheral part of air duct 2520 and the boundary face between the prism pattern 2512, and in the middle body of air duct 2520 and the edge surface diffusion between the diffusion part 2515.
Exemplary 11
Figure 36 A is the cutaway view that shows according to the optical sheet of exemplary 11 of the present invention.Figure 36 B is the image that shows the prism pattern of Figure 36 A.Figure 36 C and 36D are the image that shows the optical sheet of Figure 36 A.In the present embodiment, except diffusing member, the optical sheet of optical sheet and exemplary 10 is basic identical, therefore, will omit describing in further detail about similar elements.
Referring to Figure 36 A, 36B, 36C and 36D, light control film 2530 comprises a plurality of prism pattern 2512, a plurality of diffusing member 2535 and organic layer 2534.
Diffusing member 2535 is arranged between the adjacent prism pattern, so that light is carried out diffusion.
In the present embodiment, diffusing member 2535 comprises a plurality of hemispherical concave depressions 2536.
The lower surface of the bottom surface of the side of prism pattern 2512, diffusion part 2535 and organic layer 2534 can limit a plurality of air ducts 2540.
Exemplary 12
Figure 37 A is the perspective view that shows according to the optical sheet of exemplary 12 of the present invention.Figure 37 B and 37D are the image that shows optical sheet according to another embodiment of the invention.In the present embodiment, except diffusing member, the optical sheet of optical sheet and exemplary 5 is basic identical, therefore, will omit describing in further detail about similar elements.
Referring to Figure 37 A, 37B and 37C, light control film 2550 comprises a plurality of prism pattern 2552, a plurality of diffusion part 2565 and organic layer 2554.
Diffusion part 2565 is arranged between the prism pattern adjacent one another are 2552, so that light is carried out diffusion.
In the present embodiment, diffusion part 2565 comprises a plurality of pyramid juts 2516.
The lower surface of the upper surface of the side of prism pattern 2552, diffusion part 2562 and organic layer 2554 can limit a plurality of air ducts 2560.
Figure 37 D, 37E and 37F are the image that shows according to another example of the optical sheet of exemplary 12 of the present invention.In the present embodiment, except diffusing member, the optical sheet of optical sheet and exemplary 12 is basic identical, therefore, will omit describing in further detail about similar elements.
Referring to Figure 37 D, 37E and 37F, diffusion partly comprises the pyramid air bag that is arranged between the air duct adjacent one another are.
Exemplary 13
Figure 38 is the perspective view that shows according to the optical sheet of exemplary 13 of the present invention.In the present embodiment, except diffusing member, the optical sheet of optical sheet and exemplary 12 is basic identical, therefore, will omit describing in further detail about similar elements.
Referring to Figure 38, light control film 2570 comprises a plurality of prism pattern 2572, a plurality of diffusion part 2585 and organic layer 2574.
Diffusion part 2585 is arranged between the adjacent prism pattern 2572, so that light is carried out diffusion.
In the present embodiment, diffusion part 2585 comprises a plurality of pyramid recesses 2586.
The lower surface of the upper surface of the side of prism pattern 2572, diffusion part 2585 and organic layer 2574 can limit a plurality of air ducts 2580.
Exemplary 14
Figure 39 A is the perspective view that shows according to the optical sheet of exemplary 14 of the present invention.Figure 39 B and 39C are the image that shows the optical sheet of Figure 39 A.In the present embodiment, except diffusing member, the optical sheet of optical sheet and exemplary 5 is basic identical, therefore, will omit describing in further detail about similar elements.
Referring to Figure 39 A, 39B and 39C, light control film 2620 comprises prism pattern 2622, a plurality of diffusion part 2635 and organic layer 2624.
Diffusion part 2635 is arranged between the adjacent prism pattern 2622, so that light is carried out diffusion.
In the present embodiment, diffusion part 2635 comprises a plurality of prism-type juts 2636.
The lower surface of the upper surface of the side of prism pattern 2622, diffusion part 2635 and organic layer 2624 can limit a plurality of air ducts 2630.
Figure 39 D and 39E are the image that shows according to another example of the optical sheet of exemplary 14 of the present invention.In the present embodiment, except diffusing member, the optical sheet of optical sheet and exemplary 14 is basic identical, therefore, will omit describing in further detail about similar elements.
Referring to Figure 39 A and 39E, diffusion partly comprises a plurality of auxiliary air channel that are arranged between the air duct adjacent one another are.Auxiliary air channel is extended on the direction identical with air duct.Accessory channel can be triangle.
Exemplary 15
Figure 40 A is the perspective view that shows according to the optical sheet of exemplary 15 of the present invention.Figure 40 B and 40C are the image that shows the optical sheet of Figure 40 A.In the present embodiment, except diffusing member, the optical sheet of optical sheet and exemplary 14 is basic identical, therefore, omits describing in further detail about similar elements.
Referring to Figure 40 A, 40B and 40C, light control film 2620 ' comprises a plurality of prism pattern 2622, a plurality of diffusion part 2635 ' and organic layer 2624.
Diffusion part 2635 ' is arranged between the prism pattern adjacent one another are 2622, so that light is carried out diffusion.
In the present embodiment, diffusion part 2635 ' comprises pyramid ledge 2636 '.
The lower surface of the side of prism pattern 2622, the upper surface of diffusion 2635 ' and organic layer 2624 can limit a plurality of air ducts 2630.
Figure 40 D and 40E are the image that shows according to another example of the optical sheet of exemplary 15 of the present invention.In the present embodiment, except diffusing member, the optical sheet of optical sheet and exemplary 15 is basic identical, therefore, omits describing in further detail about similar elements.
Referring to Figure 40 D and 40E, diffusion partly comprises the auxiliary air channel that is arranged between the adjacent air duct.In the present embodiment, an auxiliary air channel is set between adjacent air duct.The section of auxiliary air channel is a triangle.
Exemplary 16
Figure 41 A is the perspective view that shows according to the optical sheet of exemplary 16 of the present invention.Figure 41 B and 41C are the image that shows the optical sheet of Figure 41 A.In the present embodiment, except last prism pattern 2242, the optical sheet of optical sheet and exemplary 8 is basic identical, therefore, will omit describing in further detail about similar elements.
Referring to Figure 41 A, 41B and 41C, optical sheet comprises first basement membrane 2201, light control film 2310, second basement membrane 2202 and a plurality of prism pattern 2242 that goes up.
Light control film 2310 is arranged on first basement membrane 2201, thereby is included in a plurality of air ducts 2320 of arranging on the direction parallel with first basement membrane 2201.In the present embodiment, the lateral edge of each air duct 2320 has the shape of rounding.In the present embodiment, the lateral edge of each air duct 2320 can be triangle, pointed etc.
Last prism pattern 2242 is arranged on second basement membrane 2202, thereby arranges on the direction that the bearing of trend with air duct 2320 intersects.For example, the bearing of trend of last prism pattern 2242 can be basically perpendicular to the bearing of trend of air duct 2320.In the present embodiment, last prism pattern 2242 can comprise and prism pattern 2212 identical materials.Alternatively, last prism pattern 2242 can comprise the material different with prism pattern 2212.
According to the present embodiment, air duct 2320 and last prism pattern 2242 interconnect, thereby can improve front face brightness.
Exemplary 17
Figure 42 A is the perspective view that shows according to the optical sheet of exemplary 17 of the present invention.Figure 42 B and Figure 42 C are the image that shows the optical sheet of Figure 42 A.In the present embodiment, except control light pattern 2252, the optical sheet of optical sheet and exemplary 11 is basic identical, therefore, will omit describing in further detail about similar elements.
Referring to Figure 42 A, 42B and 42C, control light pattern 2252 is arranged on second basement membrane 2202, thereby extends on the direction of intersecting with air duct 2320.For example, control light pattern 2252 can have shape of a hoof section.
According to the present embodiment, horseshoe-shaped control light pattern 2252 interconnects with last prism pattern 2242, thereby can improve the visual angle.
Exemplary 18
Figure 43 A is the perspective view that shows according to the optical sheet of exemplary 18 of the present invention.Figure 43 B and 43C are the image that shows the optical sheet of Figure 43 A.In the present embodiment, except light control film 2330, the optical sheet of optical sheet and exemplary 16 is basic identical, therefore, will omit describing in further detail about similar elements.
Referring to Figure 43 A, 43B and 43C, light control film 2330 is arranged on first basement membrane 2202, thereby is included in a plurality of air ducts 2340 of arranging on the direction parallel with first basement membrane 2201.
In the present embodiment, each air duct 2340 all has shape of a hoof section.Prism pattern 2335 adjacent one another are can limit horseshoe-shaped circumference.
According to the present embodiment, horseshoe-shaped air duct 2340 and last prism pattern 2242 interconnect, thereby can improve the visual angle.
Exemplary 19
Figure 44 A is the perspective view that shows according to the optical sheet of exemplary 19 of the present invention.Figure 44 B and 44C are the image that shows the optical sheet of Figure 44 A.In the present embodiment, except light control film 2640, the optical sheet of optical sheet and exemplary 11 is basic identical, therefore, will omit describing in further detail about similar elements.
Referring to Figure 44 A, 44B and 44C, light control film 2640 is arranged on first basement membrane 2201, thereby is included in a plurality of air ducts 2650 of arranging on the direction parallel with first basement membrane 2201.
Light control film 2640 further comprises the diffusion part 2655 that is arranged between the adjacent prism pattern 2642, so that light is carried out diffusion.Diffusion part 2655 comprises auxiliary prism 2656, and auxiliary prism 2656 extends on the direction identical with prism pattern 2642.
Measured the optical characteristics of the optical sheet of Figure 44 A with respect to the bright enhancement film (BEF) of 3M company.To open up Pu Kang (Topcon) BM-7 instrument as the measurement mechanism of measuring optical characteristics.
About 100% the time when the front face brightness of BEF is assumed to, can see that the brightness of the optical sheet of the present embodiment is about 127.8%, thereby has improved brightness to a great extent.
In above embodiment, a light control film is set between two basement membranes.In another embodiment; optical sheet can further comprise second light control film; this second light control film is arranged on second basement membrane; thereby comprise a plurality of air ducts; these a plurality of air ducts and second basement membrane are arranged in parallel; optical sheet also can comprise the 3rd basement membrane, and the 3rd basement membrane is arranged on second light control film, to protect second light control film.In addition, optical sheet can have sandwich construction, and this sandwich construction comprises at least four basement membranes and is separately positioned at least three light control films between the basement membrane.
According to the present embodiment, air duct is formed in the light control film, to improve the front face brightness of LCD device.In addition, the top edge of prism pattern is not exposed to its outside, thereby can prevent from cut to occur in another optical sheet.
In addition, optical sheet comprises diffusion part or air bag, thereby can improve the brightness uniformity of LCD device.In addition, omitted additional diffusion disk, thereby the assembling process of LCD device is become simply, thereby can reduce its manufacturing cost.
Exemplary 20
Figure 45 is the profile of explanation according to the LCD device of exemplary 20 of the present invention.
With reference to Figure 45, described LCD device comprises light source module 310, optical sheet 320 and LCD panel 330.
Light source module 310 offers optical sheet 320 with light.Light source module 310 is divided into direct illumination type light source module or edge light type light source module.
When light source module 310 is direct illumination type light source module, can arrange for example a plurality of light source (not shown) such as CCFL, FFL, LED onboard.
When light source module 310 is edge light type light source module, light source module 310 can comprise the light source of for example fluorescent lamp, LED etc. and photoconduction that light source is produced to the LGP (not shown) of optical sheet 320.
Optical sheet 320 places on the light source module 310 to strengthen the optical characteristics of the light that is produced by light source module 310.For example, optical sheet 320 can strengthen front face brightness, luminance uniformity etc.In the present embodiment, optical sheet 320 can comprise the optical sheet that will be described below.
In another embodiment, the LCD device can further comprise for example various optical sheets of diffusing panel, diffusion disk, optical sheet, semi-transparent film and diaphragm etc.
LCD panel 330 is placed on the optical sheet 320, makes the light that passes optical sheet 320 transmit by the liquid crystal layer between two substrates with display image.Alternatively, for example can using, the passive display board of electro phoretic display device replaces LCD panel 330.
Figure 46 is the perspective view of the optical sheet of explanation Figure 45.Figure 47 is the perspective view of the amplification of Figure 46 ' C ' part.
With reference to Figure 46 and 47, optical sheet 320 comprises first basement membrane 3201, temporary transient adhesion coating 3210 and second basement membrane 3202.
First basement membrane 3201 can have film shape.First basement membrane 3201 can comprise transparent synthetic resin.For example, synthetic resin can comprise PETG (PET), methacrylic resin, acrylic acid (class) resin, Merlon (PC) resin, alkyd resin, (gathering) vinyl chloride resin etc.In the present embodiment, first basement membrane 3201 comprises ethylene glycol terephthalate (PET).
Temporary transient adhesion coating 3210 is placed on first basement membrane 3201 a plurality of groove 3212b and the contact portion 3212a between adjacent groove 3212b that arranges on the direction parallel with first basement membrane 3201 to be included in.
Temporary transient adhesion coating 3210 comprises temporary transient sticky material.In the present embodiment, temporary transient sticky material is different from permanent adhesive materials.Permanent adhesive materials is the material that solidifies adhesion strength disappearance afterwards.Even the part that temporary transient sticky material is adhesion is separated and the still maintained material of adhesion strength from the adhesion body, thereby can temporary transient sticky material be adhered to the adhesion body once more by compacting.
In the present embodiment, term " temporary transient adhesion " is different from term " attached " and " permanent adhesion "." temporary transient adhesion " body that refers to adhere is adhered to sticker and semipermanent ground maintenance adhesion strength.Otherwise " attached " and " permanent adhesion " refers to that adhesion strength only exists during the course, and adhesion strength just disappears after process finishes.
For example, temporary transient sticky material can comprise rubber resin, acrylic acid [ester] base polymer, acrylate, silicon etc.In this case, temporary transient sticky material can further comprise for example auxiliary agent of ester rubber, phenolic resins etc. and the low molecular weight material of for example castor oil, polyisobutene etc.In the present embodiment, when temporary transient adhesion coating 3210 is temporarily adhered to second basement membrane 3202,, therefore may be not easy temporary transient adhesion coating 3210 is removed from second basement membrane 3202 because temporary transient sticky material has high adhesion strength.
In the present embodiment, the temporary transient sticky material 3210 and first basement membrane 3201 are integrally formed.
Second basement membrane 3202 is temporarily adhered to the contact portion 3210 of temporary transient adhesion coating 3210 to form a plurality of air ducts 3220 between the lower surface of the groove 3212b and second basement membrane 3202.Groove 3212b defines the side surface of air duct 3220, and the lower surface of second basement membrane 3202 defines the upper surface of air duct 3220.
In the present embodiment, air duct 3220 has leg-of-mutton cross section.In the case, each the had isosceles triangle in the air duct 3220, right angled triangle, shape such as trapezoidal.In another embodiment, each in the air duct 3220 can have for example polygon, the shape of a hoof, semicircle, circular prismatic shapes.
In the present embodiment, second basement membrane 3202 and first basement membrane 3201 have identical materials.
Temporary transient adhesion coating 3210 comprises a plurality of prism pattern 3212 that limited by groove 3212b.In the present embodiment, the top of removing prism pattern 3212 is to form contact portion 3212a.Prism pattern 3212 exposes by air duct 3220 at groove 3212b place, thereby light can be refracted at the interface place between prism pattern 3212 and the air duct 3220.Thereby, be directed in the direction vertical from the light of first basement membrane, 3201 incidents, thereby can strengthen the front face brightness of LCD device with first basement membrane 3201.
Distance ' d ' between the outermost part of groove 3212b and second basement membrane 3202 is less than the imagination height ' h ' of prism pattern 3212.
In the present embodiment, second basement membrane 3202 temporarily adhered to the integrally formed temporary transient adhesion coating 3210 of first basement membrane 3201 on, to form optical sheet 320.
Figure 48,49,50 and 51 is the profiles that illustrate the method for the optical sheet of making Figure 17.Figure 48 is explanation forms viscous coating 3212 ' on first basement membrane 3201 a profile.
With reference to Figure 48, viscous coating 3212 ' is formed on first basement membrane 3201.In the present embodiment, the temporary transient adhesive solution that will have high viscosity is coated on first basement membrane 3201 to form temporary transient adhesion coating 3212 '.
Figure 49 is the profile that explanation forms the temporary transient viscous coating 3212 ' of Figure 48.
With reference to Figure 50, form temporary transient viscous coating 3212 ' to form groove 3212b and contact portion 3212a.In the present embodiment, form groove 3212b and contact portion 3212a by the whole bag of tricks such as for example roller, compacting, printing, etchings.In the present embodiment, contact portion 3212a is surperficial parallel with first basement membrane 3201.
Then, be formed with on it groove 3212b and contact portion 3212a and with the viscosity of the integrally formed Photosetting photo-induced curing coating 3212 ' (as shown in figure 48) of first basement membrane 3201.For example, can pass through the viscosity that drying process, heating process, exposure technology etc. strengthen temporary transient adhesion coating 3212 '.In the case, exposure technology can be used for example ultraviolet light, visible light etc.In another embodiment, can carry out simultaneously the step of temporary transient viscous coating 3212 ' composition with the viscosity that strengthens temporary transient viscous coating 3212 '.
Figure 50 is the profile that explanation forms second basement membrane 3202.
With reference to Figure 50, second basement membrane 3202 has plane surface.
In the present embodiment, can on the first surface of second basement membrane 3202, form the primer coating (not shown).For example, can be coated on second basement membrane 3202 at liquid resin with high viscosity after, form primer coating by drying process, heating process, exposure technology etc.
Described primer coating comprises the organic material different with the remainder of second basement membrane 3202, with the temporary transient adhesion strength of the refractive index that strengthens second basement membrane 3202 and temporary transient adhesion coating 3212.
Figure 51 is that explanation temporarily adheres to second basement membrane 3202 of Figure 50 the profile on the temporary transient adhesion coating 3210 of Figure 49.
With reference to Figure 51, second basement membrane 3202 temporarily is adhered to the contact portion 3212a of temporary transient adhesion coating 3210.In the present embodiment, temporary transient adhesion coating 3210 is to pressure-sensitive temporary transient adhesion coating.When pushing second basement membrane 3202, the lower surface of second basement membrane 3202 is temporarily adhered to the contact portion 3212a of temporary transient adhesion coating 3210.
In the present embodiment, only working pressure temporarily adheres to second basement membrane 3202 on the temporary transient adhesion coating 3210.In another embodiment, by working pressure second basement membrane 3202 is temporarily adhered on the temporary transient adhesion coating 3210 in advance, for example the light of ultraviolet light shines on the temporary transient adhesion coating 3210 once more then, with the temporary transient adhesion strength of the temporary transient adhesion coating 3210 of further enhancing, thereby second basement membrane 3202 can firmly adhere on the temporary transient adhesion coating 3210.When working pressure temporarily adhered to second basement membrane 3202 on the temporary transient adhesion coating 3210, the manufacturing process of comparing this step with irradiating ultraviolet light once more may be fairly simple.In addition, when irradiating ultraviolet light once more, thereby the part of ultraviolet light is disperseed to have increased energy consumption by second basement membrane 3202.Thereby the temperature that is used for once more the lamp of irradiating ultraviolet light may raise, thus but fire hazard.
According to the present embodiment, air duct 3220 is to strengthen the front face brightness of LCD device in optical sheet 320.In addition, the top edge of prism pattern 3212 can not be exposed to the outside of prism pattern, thereby prevents to swipe another optical sheet.
In addition, owing to after making optical sheet 320, still keep the temporary transient adhesion strength of the contact portion 3212a of temporary transient adhesion coating 3210, even thereby because collision and divest the part of second basement membrane 3202, also can temporarily adhere to contact portion 3212a by pushing the part that second basement membrane 3202 will be divested once more from contact portion 3212a.
In addition, the manufacturing process of optical sheet 320 may be simple, thereby the manufacturing cost of optical sheet 320 can be lowered.
Exemplary 21
Figure 52 is the perspective view of explanation according to the optical sheet of exemplary 21 of the present invention.In the present embodiment, except optical waveguide layer, this optical sheet is identical with Figure 46,47,48,50 and 51 optical sheet basically, thereby any further detailed description relevant with same parts will be omitted.
With reference to Figure 52, optical sheet 320 comprises first basement membrane 3201, optical waveguide layer 3310 and second basement membrane 3202.
In the present embodiment, optical waveguide layer 3310 comprises photocurable resin.Optical waveguide layer 3310 comprises a plurality of groove 3312b and adhesion part 3312a.At this, optical waveguide layer 3310 can comprise that thermosetting resin, thermoplastic resin, light moulds resin etc.Adhesion part 3312a directly is attached to the lower surface of second basement membrane 3202.
Second basement membrane 3202 can have film shape.Second film 3202 comprises transparent synthetic resin.For example, synthetic resin can comprise, methacrylic resin, acrylic acid (class) resin, Merlon (PC) resin, alkyd resin, (gathering) vinyl chloride resin etc.In the present embodiment, second basement membrane 3202 comprises PETG (PET).
Figure 53,54,55 and 56 is profiles that the method for the optical sheet of making Figure 52 is described.Figure 53 is explanation forms photo-induced curing coating 3312 ' on first basement membrane 3201 a profile.
With reference to Figure 53, on first basement membrane 3201, form photo-induced curing coating 3312 '.In the present embodiment, photo-induced curing coating 3312 ' can comprise the material that solidifies by irradiating ultraviolet light.In another embodiment, can on first basement membrane 3201, form the heat-curable coating (not shown).
Figure 54 is composition is carried out in explanation to the photo-induced curing coating 3312 ' of Figure 53 a profile.
With reference to Figure 54, photo-induced curing coating 3312 ' is carried out composition, to form groove 3312b and adhesion part 3312a.In the present embodiment, by roller for example, push, the whole bag of tricks such as printing, etching form groove 3312b and adhesion part 3312a.In the present embodiment, adhesion part 3312a is surperficial parallel with first basement membrane 3201.
Figure 55 is the profile that the viscosity of the photo-induced curing coating 3312 ' that strengthens Figure 54 is described.
With reference to Figure 55, be formed with the viscosity of the photo-induced curing coating 3312 ' (shown in Figure 54) of groove 3312b and adhesion part 3312a on it.For example, can pass through the viscosity that drying process, heating process, exposure technology etc. strengthen photo-induced curing coating 3312 '.In the present embodiment, can strengthen the viscosity of photo-induced curing coating 3312 ' by using ultraviolet light.In the case, can carry out simultaneously the step of photo-induced curing coating 3312 ' composition and the step of the viscosity that strengthens photo-induced curing coating 3312 '.In another embodiment, can omit the step of the viscosity that strengthens photo-induced curing coating 3312 '.
Figure 56 is that explanation is by using the photo-induced curing coating 3312 of Figure 55 " form the profile of the step of optical sheet.
With reference to Figure 56, second basement membrane 3202 is attached at photo-induced curing coating 3312 " on the adhesion part 3312 of (shown in Figure 55).In the present embodiment, photo-induced curing coating 3312 " keep mobile, thereby because photo-induced curing coating 3312 " second basement membrane 3202 surface tension and second basement membrane 3202 is attached at photo-induced curing coating 3312 " adhesion part 3312a on.
Then, place the photo-induced curing coating 3312 between first basement membrane 3201 and second basement membrane 3202 " be cured, to form and first basement membrane 3201 and the integrally formed optical waveguide layer 3310 of second basement membrane 3202.
According to the present embodiment, the optical waveguide layer 3310 and first basement membrane 3201 and second basement membrane 3202 are integrally formed to strengthen the physical stability of optical sheet.
In addition, the manufacturing process of optical sheet is simplified, thereby its manufacturing cost can reduce.
Exemplary 22
Figure 57 is the profile of explanation manufacturing according to a part of method of the optical sheet of exemplary 22 of the present invention.In the present embodiment, except contact portion, this optical sheet is identical with Figure 46,47,48,49,50 and 51 optical sheet basically, thereby any further detailed description relevant with identical parts will be omitted.
With reference to Figure 57, on first basement membrane 3201, form temporary transient adhesion coating 3212 ' (as shown in figure 48), form temporary transient adhesion coating 3212 ' then, to form a plurality of groove 322b and contact portion 3222a.
In the present embodiment, contact portion 3222a has the high surface of roughness.For example, contact portion 3222a can have the different shape of for example irregular convex-concave pattern, embossed pattern, outstanding pattern, recessed pattern etc.
Then, second basement membrane 3202 (shown in Figure 51) is temporarily adhered on the contact portion 3222a of temporary transient adhesion coating 3210.
According to the present embodiment, strengthened the roughness of contact portion 3222a, thereby can strengthen the adherence between the contact portion 3222a and second basement membrane 3202.
Exemplary 23
Figure 58 is the profile of explanation according to the optical sheet of exemplary 23 of the present invention.In the present embodiment, except contact portion with activity between second basement membrane combines, this optical sheet is identical with Figure 46,47,48,49,50 and 51 optical sheet basically, thereby any further detailed description relevant with identical parts will be omitted.
With reference to Figure 58, this optical sheet comprises first basement membrane 3201, temporary transient adhesion coating 3230 and second basement membrane 3202.
Temporary transient adhesion coating 3230 places on first basement membrane 3201 to comprise a plurality of groove 3232b and contact portion 3232a.Groove 3232b is arranged on the direction parallel with first basement membrane 3201.Contact portion 3232a is formed between the adjacent groove 3232b.Temporary transient adhesion coating 3230 comprises temporary transient sticky material.
Second basement membrane 3202 is temporarily adhered to contact portion 3232a and is gone up to form the air grooves 3220 between the groove 3232b and second basement membrane 3202.
The contact portion 3232a and second basement membrane 3202 of temporary transient adhesion coating 3230 can be active combinations.In the present embodiment, active in being meant, at the central area PA that compression stress is applied to contact portion 3232a and tensile stress is applied under the situation of neighboring area TA, temporary transient adhesion coating 3230 is temporarily adhered to second basement membrane 3202.
When external impact acts on the optical sheet, because therefore the balance of compression stress and tensile stress can absorb external impact with active in conjunction with corresponding part.Thereby, can firmly keep in touch being connected between part 3232a and second basement membrane 3202.
Figure 59 is the profile that the method for the optical sheet of making Figure 58 is described.
With reference to Figure 59, on first basement membrane 3201, form viscous coating (as shown in figure 48 3212 '), then to temporary transient viscous coating 3212 ' composition to form groove 3232b and contact portion 3232a.
In the present embodiment, contact portion 3232a has convex shape, and the central area PA of contact portion is outstanding from its neighboring area TA.For example, the second contact portion 3232a can be included in protuberance that the direction parallel with groove 3232b extend and at a plurality of protuberances of the direction discontinuous layout parallel with groove 3232b.
Then, second basement membrane 3202 (shown in Figure 51) is temporarily adhered on the temporary transient adhesion coating 3230.
According to the present embodiment, because the activity combination of contact portion 3232a and second basement membrane 3202, thereby can strengthen cushion effect for external impact.
Exemplary 24
Figure 60 is the profile of explanation according to the optical sheet of exemplary 24 of the present invention.In the present embodiment, except diffusing member, this optical sheet is identical with the optical sheet shown in Figure 46,47,48,49,50 and 51 basically, thereby the further detailed description relevant with similar elements will be omitted.
With reference to Figure 60, this optical sheet comprises first basement membrane 3201, temporary transient adhesion coating 3240 and second basement membrane 3202.
Temporary transient adhesion coating 3240 is placed on first basement membrane 3201 to comprise a plurality of prism pattern 3242 and diffusion part 3245.Prism pattern 3242 is extended on the direction parallel with first basement membrane 3201 and is had trapezoidal cross section, and the top of prism pattern 3242 has flat shape.Diffusion part 3245 is placed between the adjacent prism pattern 3242.Contact portion 3242a is formed at the top of prism pattern 3242, and contact portion 3242a is temporarily adhered to second basement membrane 3202.
Inclined-plane 3242b is formed at the both sides of contact portion 3242a, thereby inclined-plane 3242b is to the light of frontal guiding from the bottom incident of inclined-plane 3242b.
In the present embodiment, diffusion part 3245 comprises a plurality of hemispheric protuberances 3246.In another embodiment, diffusion part 3245 can have for example different shape of pyramid protuberance, prismatic shape protuberance, hemispherical concave depressions, pyramid recess, prism portion recess etc.
According to the present embodiment, this optical sheet comprises prism pattern 3242 and diffusion part 3245, thereby the front face brightness and the luminance uniformity that pass the light of optical sheet are strengthened simultaneously.
Exemplary 25
Figure 61 is the profile of explanation according to the optical sheet of exemplary 25 of the present invention.In the present embodiment, except diffusing member, this optical sheet optical sheet with Figure 60 basically is identical, thereby any further detailed description relevant with same parts will be omitted.
With reference to Figure 61, this optical sheet comprises first basement membrane 3201, temporary transient adhesion coating 3240a and second basement membrane 3202.
Temporary transient adhesion coating 3240a is placed on first basement membrane 3201 to comprise a plurality of prism pattern 3242 and diffusion part 3245a.Prism pattern 3242 is extended to have the trapezoid cross section in the direction parallel with first basement membrane 3201, and the top of prism pattern 3242 has flat shape.Diffusion part 3245a is placed between the adjacent prism pattern 3242.Contact portion 3242a is formed at the top of prism pattern 3242, and contact portion 3242a is temporarily adhered to second basement membrane 3202.
In the present embodiment, diffusion part 3245a comprises a plurality of hemispheric recess 3246a.
Exemplary embodiment 26
Figure 62 is the perspective view of explanation according to the optical sheet of exemplary 26 of the present invention.In the present embodiment, except diffusing member, this optical sheet optical sheet with Figure 60 basically is identical, thereby any further detailed description relevant with same parts will be omitted.
With reference to Figure 62, this optical sheet comprises first basement membrane 3201, temporary transient adhesion coating 3240b and second basement membrane 3202.
Temporary transient adhesion coating 3240b is placed on first basement membrane 3201 to comprise a plurality of prism pattern and diffusion part 3245b.Prism pattern 3242 with the direction of first basement membrane 3201 on extend to have trapezoidal cross section, the top of prism pattern 3242 has flat shape.Diffusion part 3245b is placed between the adjacent prism pattern 3242.Contact portion 3242a is formed at the top of prism pattern 3242, and contact portion 3242a is temporarily adhered to second basement membrane 3202.
In the present embodiment, diffusion part 3245b comprises the projection 3246b of a plurality of pyramidal shape.
Exemplary 27
Figure 63 is the perspective view of explanation according to the optical sheet of exemplary 27 of the present invention.In the present embodiment, except diffusing member, this optical sheet optical sheet with Figure 60 basically is identical, thereby any further detailed description relevant with same parts will be omitted.
With reference to Figure 63, this optical sheet comprises first basement membrane 3201, temporary transient adhesion coating 3240c and second basement membrane 3202.
Temporary transient adhesion coating 3240c is placed in first basement membrane 3201 to comprise a plurality of prism pattern and diffusion part 3245c.Prism pattern 3242 is extended to have trapezoidal cross section on the direction parallel with first basement membrane 3201, and the top of prism pattern 3242 has flat shape.Diffusion part 3245c is placed between the adjacent prism pattern 3242.Contact portion 3242a is formed at the top of prism pattern 3242, and contact portion 3242a is temporarily adhered to second basement membrane 3202.
In the present embodiment, diffusion part 3245c comprises the recess 3246c of a plurality of pyramids.
Exemplary 28
Figure 64 is the perspective view of explanation according to the optical sheet of exemplary 28 of the present invention.In the present embodiment, except diffusing member, this optical sheet optical sheet with Figure 60 basically is identical, thereby any further detailed description relevant with same parts will be omitted.
With reference to Figure 64, this optical sheet comprises first basement membrane 3201, adhesion coating 3240d and second basement membrane 3202.
Temporary transient adhesion coating 3240d is placed on first basement membrane 3201 to comprise a plurality of prism pattern 3242 and diffusion part 3245d.Prism pattern 3242 is extended to have trapezoidal cross section on the direction parallel with first basement membrane 3201, and the top of prism pattern 3242 has flat shape.Diffusion part 3245d is placed between the adjacent prism pattern 3242.Contact portion 3242a is formed at the top of prism pattern 3242, and contact portion 3242a is temporarily adhered to second basement membrane 3202.
In the present embodiment, diffusion part 3245d comprises a plurality of auxiliary prism pattern 3246d.
According to the present embodiment, because auxiliary prism pattern 3246d, the front face brightness and the luminance uniformity that therefore pass the light of this optical sheet can be enhanced.
Exemplary 29
Figure 65 is the perspective view of explanation according to the optical sheet of exemplary 29 of the present invention.In the present embodiment, except the quantity of auxiliary prism pattern, this optical sheet optical sheet with Figure 60 basically is identical, thereby any further detailed description relevant with same parts will be omitted.
With reference to Figure 65, this optical sheet comprises first basement membrane 3201, adhesion coating 3240c and second basement membrane 3203.
Temporary transient adhesion coating 3240e is placed on first basement membrane 3201 to comprise a plurality of prism pattern 3242 and diffusion part 3245e.Prism pattern 3242 is extended to have trapezoidal cross section on the direction parallel with first basement membrane 3201, and the top of prism pattern 3242 has flat shape.Diffusion part 3245e is placed between the adjacent prism pattern 3242.Contact portion 3242a is formed at the top of prism pattern 3242, and contact portion 3242a is temporarily adhered to second basement membrane 3202.
In the present embodiment, diffusion part 3245e comprises a plurality of auxiliary prism pattern 3246e, and auxiliary prism pattern 3246e is formed between the adjacent prism pattern 3242.
Exemplary 30
Figure 66 is the perspective view of explanation according to the optical sheet of exemplary 30 of the present invention.In the present embodiment, except air bag, this optical sheet is identical with Figure 46,47,48,49,50 and 51 optical sheet basically, thereby any further detailed description relevant with same parts will be omitted.
With reference to Figure 66, this optical sheet comprises first basement membrane 3201, temporary transient adhesion coating 3250 and second basement membrane 3202.
Temporary transient adhesion coating 3250 is placed on first basement membrane 3201 to be included in a plurality of groove 3252b that arrange on the direction parallel with first basement membrane 3201 and to be arranged at contact portion 3252a between the adjacent groove 3252b.Temporary transient adhesion coating 3250 comprises temporary transient sticky material.
In the present embodiment, contact portion 3252a comprises a plurality of recesses.
Second basement membrane 3202 temporarily is adhered to contact portion 3252a to comprise a plurality of air ducts 3220 and a plurality of air bag 3255.Air duct 3220 is formed between the lower surface of the groove 3252b and second basement membrane 3202, and air bag 3255 is formed between the lower surface of the recess of contact portion 3252a and second basement membrane 3202.
In the present embodiment, air bag 3255 has hemispherical.Alternatively, air bag 3255 can have for example different shape such as pyramid, prismatic shape.
According to the present embodiment, this optical sheet comprises that air bag 3255 passes the light of this optical sheet by the zone of diffusion with increase, thereby strengthens diffusion effect.Thereby front face brightness and luminance uniformity are strengthened simultaneously.In addition, thus the visual angle increases display quality can strengthen.
Exemplary 31
Figure 67 is the perspective view of explanation according to the optical sheet of exemplary 31 of the present invention.In the present embodiment, except air bag, this optical sheet optical sheet with Figure 66 basically is identical, thereby any further detailed description relevant with same parts will be omitted.
With reference to Figure 67, this optical sheet comprises first basement membrane 3201, temporary transient adhesion coating 3256 and second basement membrane 3202.
Temporary transient adhesion coating 3256 is placed on first basement membrane 3201 to be included in a plurality of groove 3257b that are provided with on the direction parallel with first basement membrane 3201 and to be arranged at contact portion 3257a between the adjacent groove 3257b.Temporary transient adhesion coating 3256 comprises temporary transient sticky material.
In the present embodiment, contact portion 3257a comprises a plurality of protuberances 3258.
Second basement membrane 3202 is temporarily adhered to the top of protuberance 3258 of contact portion 3257a of temporary transient adhesion coating 3256 to form a plurality of air ducts 3220 and a plurality of air net 3220a.Air duct 3220 is formed between the lower surface of the groove 3257b and second basement membrane 3202, and air net 3220a is formed between the lower surface of the recess of contact portion 3257a and second basement membrane 3202.
According to the present embodiment, this optical sheet comprises that air net 3220a passes the light of this optical sheet by the zone of diffusion with increase, thereby strengthens diffusion effect.Thereby front face brightness and luminance uniformity are strengthened simultaneously.In addition, thus the visual angle increases display quality to strengthen.
Exemplary 32
Figure 68 is the profile of explanation according to the optical sheet of exemplary 32 of the present invention.In the present embodiment, except diffusing layer, this optical sheet is identical with Figure 46,47,48,49,50 and 51 optical sheet basically, thereby any further detailed description relevant with same parts will be omitted.
With reference to Figure 68, this optical sheet comprises first basement membrane 3201, temporary transient adhesion coating 3210, second basement membrane 3202 and diffusing layer 3204.
Diffusing layer 3204 is attached to second basement membrane 3202 to comprise a plurality of diffusion particle 3204a and resin 3204b.Resin 3204b is attached at diffusion particle 3204a on second basement membrane 3202.For example, diffusion particle 3204a can comprise the optical transparency particle with refractive index different with the refractive index of resin 3204b.Described optical transparency particle can be bubble.In another embodiment, diffusion particle 3202a can be placed in second basement membrane 3202 or first basement membrane 3201.
According to aforesaid the present embodiment, optical sheet comprises diffusing layer 3204, thereby the luminance uniformity of LCD device can be enhanced.In addition, omitted additional diffusion disk, thereby the packaging technology of LCD device can become simply, thereby its manufacturing cost can reduce.
Exemplary 33
Figure 69 is the perspective view of explanation according to the optical sheet of exemplary 33 of the present invention.In the present embodiment, except the prism pattern of top, this optical sheet optical sheet with exemplary 9 basically is identical, thereby any further detailed description relevant with same parts will be omitted.
With reference to Figure 69, this optical sheet comprises first basement membrane 3201, adhesion coating 3210 and second basement membrane 3203.
Second basement membrane 3203 can have the film shape, and a plurality of prism pattern 3203a are formed at this film in shape.Second film 3203 comprises transparent synthetic resin.For example, this synthetic resin can comprise PETG (PET), methacrylic resin, acrylic acid (class) resin, Merlon (PC) resin, alkyd resin, (gathering) vinyl chloride resin etc.In the present embodiment, second basement membrane 3203 comprises PETG (PET).
In the present embodiment, the prism pattern 3203a of second basement membrane 3203 with the vertical substantially direction of the prism pattern 3212 of temporary transient adhesion coating 3210 on extend.In another embodiment, prism pattern 3203a can have for example different shape of the shape of a hoof, hemispherical etc.
Exemplary 34
Figure 70 is the perspective view of explanation according to the optical sheet of exemplary 34 of the present invention.In the present embodiment, except the diffusing pattern of top, this optical sheet optical sheet with Figure 69 basically is identical, and any further detailed description relevant with same parts will be omitted.
With reference to Figure 70, this optical sheet comprises first basement membrane 3201, adhesion coating and second basement membrane 3204.
Second basement membrane 3204 can have the film shape, and a plurality of top diffusing pattern 3204a are formed on this film.In the present embodiment, top diffusing pattern 3204a has shape of a hoof cross section.
According to the present embodiment, can strengthen front face brightness by the air duct 3220 of temporary transient adhesion coating 3210, the uniformity can highlight by the top diffusing pattern 3204a of second basement membrane 3204.In addition, can increase the visual angle by air duct 3220 and top diffusing pattern 3204a.
Exemplary 35
Figure 71 is the perspective view of explanation according to the optical sheet of exemplary 35 of the present invention.In the present embodiment, except adhesion coating, this optical sheet optical sheet with Figure 69 basically is identical, thereby any further detailed description relevant with same parts will be omitted.
With reference to Figure 71, this optical sheet comprises first basement membrane 3201, adhesion coating 31210 and second basement membrane 3203.
Temporary transient adhesion coating 31320 comprises a plurality of grooves 31212 with shape of a hoof cross section.Temporary transient adhesion coating 31320 is connected to second basement membrane 3203 to form a plurality of air ducts 31220 with shape of a hoof cross section.
According to the present embodiment, the uniformity that can highlight by the air duct 31220 of temporary transient adhesion coating 3120 can strengthen front face brightness by the prism pattern 3203a of second basement membrane 3203.In addition, can increase the visual angle by air duct 31220 and prism pattern 3203a.
Exemplary 36
Figure 72 is the perspective view of explanation according to the optical sheet of exemplary 36 of the present invention.In the present embodiment, except temporary transient adhesion coating, this optical sheet optical sheet with Figure 69 basically is identical, thereby any further detailed description relevant with same parts will be omitted.
With reference to Figure 72, this optical sheet comprises first basement membrane 3201, adhesion coating 3260 and second basement membrane 3203.
Temporary transient layer 3260 is placed on first basement membrane 3201 to comprise a plurality of prism pattern 3212 and auxiliary optical part 3265.Prism pattern 3212 is extended to have trapezoidal cross section on the direction parallel with first basement membrane 3201, and the top of prism pattern 3212 is planes.Auxiliary optical part 3265 is placed between the adjacent prism pattern 3212.
In the present embodiment, a plurality of auxiliary prism pattern 3265a are formed on the auxiliary optical part 3265 with front face brightness and the visual angle of enhancing from the light of the lower surface incident of optical sheet.In another embodiment, auxiliary optical part 3265 comprises a plurality of protuberances, and a plurality of recesses etc. are with the luminance uniformity of enhancing from the light of the lower surface incident of optical sheet.For example, protuberance or recess can have for example different shape of hemispherical, pyramid etc.
Exemplary 37
Figure 73 is the perspective view of explanation according to the optical sheet of exemplary 37 of the present invention.Figure 74 is the profile of the optical sheet of explanation Figure 73.
With reference to Figure 73 and 74, optical sheet 320 comprises first basement membrane 3201, first adhesive layer 3260, second basement membrane 3204, second adhesion coating 3270 and the 3rd basement membrane 3205.
First basement membrane 3201 can have the film shape.First basement membrane 3201 can comprise transparent synthetic resin.In the present embodiment, a plurality of first diffusion point 3201a are formed on the lower surface of first basement membrane 3201.For example, the first diffusion point 3201a can be spaced apart from each other.The first diffusion point 3201a can strengthen from the luminance uniformity of the light of the lower surface incident of optical sheet, and can prevent that first basement membrane 3201 is subjected to physical impact or the scraping from the outside.
First adhesion coating 3260 is placed on first basement membrane to have sticky material.First adhesion coating 3260 comprise a plurality of prism pattern 3212 of arranging along direction parallel to each other and place the first adjacent prism pattern 3212 between the first auxiliary optical part 3265.
In the present embodiment, a plurality of first auxiliary prism pattern 3265a are formed on the first auxiliary optical part 3265 at first to strengthen from the front face brightness and the visual angle of the light of the lower surface incident of optical sheet.In another embodiment, the first auxiliary optical part 3265 can comprise a plurality of recesses, a plurality of protuberance, a plurality of semicircle cylinders etc.
Second basement membrane 3204 is temporarily adhered to the contact portion 3212a of first prism pattern 3212 of the first temporary transient adhesion coating 3260 to form a plurality of air ducts 3266 between the lower surface of the first groove 3212b, the first auxiliary optical part 3265 and second basement membrane 3204 of first prism pattern 3212.The first groove 3212b defines a plurality of side surfaces of first air duct 3266, and the lower surface of second basement membrane 3204 defines the upper surface of first air duct 3266, and the first auxiliary optical part 3265 defines the lower surface of first air duct 3266.
Temporary transient adhesion coating 3270 is placed on second basement membrane 3204 to comprise a plurality of second prism pattern 3272 and the second auxiliary optical part 3275.Second prism pattern 3272 is along direction setting parallel to each other.In the present embodiment, the bearing of trend of first prism pattern 3212 bearing of trend with second prism pattern 3272 basically is vertical.In another embodiment, first prism pattern 3212 can be extended on identical direction, opposite direction, the direction of formation acute angle etc. with second prism pattern 3272.The second temporary transient adhesion coating 3270 comprises temporary transient sticky material.
In the present embodiment, a plurality of second auxiliary prism pattern 3275a are formed on the second auxiliary optical part 3275 to strengthen once more from the front face brightness and the visual angle of the light of the lower surface incident of second basement membrane 3204.In another embodiment, the second auxiliary optical part 3275 can comprise a plurality of recesses, a plurality of protuberance, a plurality of semicircle cylinders etc.
The 3rd basement membrane 3205 is temporarily adhered to the contact portion 3272a of second prism pattern 3272 of the second temporary transient adhesion coating 3270, with a plurality of air ducts 3276 of formation between the lower surface of the second groove 3272b, the second auxiliary optical part 3275 and the 3rd basement membrane 3205 of second prism pattern 3272.The second groove 3272b defines a plurality of side surfaces of second air duct 3276, and the lower surface of the 3rd basement membrane 3205 defines the upper surface of second air duct 3276, and the second auxiliary optical part 3275 defines the lower surface of second air duct 3276.
In the present embodiment, a plurality of second diffusion point 3205a are formed on the 3rd basement membrane 3205.For example, the second diffusion point 3205a can strengthen from the luminance uniformity of the lower surface incident of the 3rd basement membrane 3205, and can protect the 3rd basement membrane 3205 to avoid physical impact and scraping from the outside.
When the prism pattern of optical sheet is exposed, need expensive boundary belt in transportation, to protect prism pattern.Especially, when boundary belt was attached at the both sides of optical sheet, cost of transportation significantly increased.In addition, in the assembling process of backlight assembly, can easily boundary belt be separated from optical sheet, thereby owing to static, external impact etc., this optical sheet can be damaged.Yet, in the present embodiment,, thereby can under the situation that does not have the supplementary protection band, easily transport optical sheet respectively by first basement membrane 3201 and the 3rd basement membrane 3205 protection first temporary transient adhesion coating 3260 and the second temporary transient adhesion coatings 3270.In addition, because the existence of the first dot pattern 3201a and the second dot pattern 3205a, the resistance of swiping for the outside can be enhanced.
In the present embodiment, the density of the first dot pattern 3201e is less than the density of the second dot pattern 3205e.Alternatively, the density of the first dot pattern 3201a is equal to or greater than the density of the second dot pattern 3205e.
And when optical sheet only comprised a basement membrane, the thickness of basement membrane increased the influence of avoiding external impact with the protection optical sheet.Thereby, when use comprises the prism assemblies of a plurality of optical sheets,, the thickness of each optical sheet can increase thereby increasing the thickness of whole optics chip module.Yet, a plurality of basement membrane 3201,3204 and 3205 is stacked to form an optical sheet according to the present embodiment, even the thickness of basement membrane 3201,3204 and 3205 increases, but because the complex function of basement membrane 3201,3204 and 3205, also can be enhanced to the resistivity of external impact.Therefore the integral thickness of optical sheet can reduce.
As mentioned above, according to the present invention, optical sheet comprises temporary transient adhesion coating, thus since the defective that causes of external impact can easily be repaired.In addition, temporary transient adhesion pattern according to the present invention keeps active bonding state, thereby can be strengthened the resistance of external impact.
In addition, optical sheet comprises diffusion part or air bag, thereby the luminance uniformity of LCD device can strengthen.
In addition, can improve the display quality of display device, and the thickness of backlight assembly or LCD device can reduce, thereby display device can be made thinlyyer by enhanced brightness, visual angle etc.
In addition, the manufacturing process with optical sheet of complex function can become simply, thereby the defect rate of optical sheet can reduce, thereby the manufacturing cost of optical sheet can reduce.
Above be exemplary description of the present invention, and the present invention be not construed as limiting.Although described some exemplary of the present invention, those skilled in the art can easily understand under the situation that does not deviate from new instruction of the present invention and advantage in itself can carry out many modifications to exemplary.Therefore, all this modifications are included in the scope of the present invention of claim qualification.In the claims, device adds the structure that the function subordinate clause has covered the described function of describing of realization herein, and has covered structural being equal to and equivalent configurations.Therefore, above be exemplary description of the present invention and disclosed concrete exemplary be not construed as limiting, the modification of disclosed embodiment and other exemplary is comprised within the scope of the appended claims.The present invention is defined by the claims, and being equal to of claim is also contained in the scope of the present invention.

Claims (74)

1. the optical sheet on the LGP that is arranged on backlight assembly comprises:
Basement membrane, in described basement membrane, light is from downside incident;
A plurality of prism pattern, outstanding with separated from one another on described basement membrane, thus enhancing is from the front face brightness of the light of the downside incident of described basement membrane; And
Diffusing member is arranged between the described prism pattern to have the diffusing surface parallel with described basement membrane, and described diffusing member comprises a plurality of diffusion points, and described diffusion point can strengthen from the brightness uniformity of the light of the downside incident of described basement membrane.
2. optical sheet as claimed in claim 1, each the diffusion point in wherein said a plurality of diffusion points includes recess formed thereon.
3. optical sheet as claimed in claim 2, wherein said recess comprise hemispherical, semielliptical shape or polygonal pyramid shape.
4. optical sheet as claimed in claim 1, each the diffusion point in wherein said a plurality of diffusion points includes jut.
5. optical sheet as claimed in claim 4, wherein said jut comprise hemispherical, semielliptical shape or polygonal pyramid shape.
6. optical sheet as claimed in claim 1, the material of wherein said diffusing member is identical with the material of described prism pattern.
7. optical sheet as claimed in claim 1, the height of wherein said diffusing surface is lower than the height of described prism pattern.
8. optical sheet as claimed in claim 1 further comprises:
Be arranged on the auxiliary diffusing member in the auxiliary diffusive regions, described auxiliary diffusive regions is limited at corresponding between the diffusive regions of described diffusing member and the prism district corresponding to described prism pattern, so that described auxiliary diffusing member has and described prism pattern and described diffusing member identical materials, and described auxiliary diffusing member and described prism pattern and described diffusing member are integrally formed, thereby reflect or reflect being incident to light in it.
9. optical sheet as claimed in claim 8, wherein said auxiliary diffusing member have the curve form that extends along the direction parallel with described prism pattern.
10. optical sheet as claimed in claim 1, the cross sectional shape of each prism pattern in wherein said a plurality of prism pattern have 3 to 32 limits.
11. optical sheet as claimed in claim 10, the downside of each prism pattern in wherein said a plurality of prism pattern have trapezoidal, pentagon or the heptagon that is parallel to described basement membrane.
12. optical sheet as claimed in claim 10, the cross section of each prism pattern in wherein said a plurality of prism pattern is an isosceles triangle, the drift angle of described isosceles triangle be about 1 spend about 179 the degree.
13. optical sheet as claimed in claim 1, wherein, when observing from vertical view, triangularity is arranged at the center of adjacent diffusion point.
14. optical sheet as claimed in claim 1, wherein, when observing from vertical view, the center of adjacent diffusion point is arranged in rectangle.
15. optical sheet as claimed in claim 1 wherein passes the surface of each described prism pattern and the surface of described diffusion point and forms cut or crack, with brightness uniformity, visual angle and the half-power angle that strengthens described optical sheet.
16. the optical sheet on the LGP that is arranged on backlight assembly comprises:
Basement membrane, in described basement membrane, light is from downside incident;
A plurality of prism pattern, outstanding with separated from one another on described basement membrane, thus enhancing is from the front face brightness of the light of the downside incident of described basement membrane; And
Diffusing member is arranged between the prism pattern to have the diffusing surface parallel with described basement membrane, and described diffusing member comprises a plurality of diffusion grooves, and described diffusion groove strengthens from the brightness uniformity of the light of the downside incident of described basement membrane.
17. optical sheet as claimed in claim 16 wherein, forms cut or crack, with brightness uniformity, visual angle and the half-power angle that strengthens described optical sheet on the surface of each described prism pattern.
18. the optical sheet on the LGP that is arranged on backlight assembly comprises:
Basement membrane, it comprises prism district, diffusive regions and the auxiliary diffusive regions between described prism district and described diffusive regions;
A plurality of prism pattern, it comprises the right angled triangle that is formed by the inclined-plane that is separated from each other in the described epilamellar described prism district;
Diffusing member, be arranged in the described epilamellar described diffusive regions, and between the adjacent downside of adjacent prism pattern, described diffusing member comprises the diffusing surface parallel with described basement membrane, and described diffusing member comprises a plurality of diffusion points that are positioned on the described diffusing surface; And
Auxiliary diffusing member, be arranged in described auxiliary diffusive regions to have and described prism pattern and described diffusing member identical materials, described auxiliary diffusing member and described prism pattern and described diffusing member are integrally formed, and described auxiliary diffusing member is between the adjacent upside of described prism pattern, the light that passes its incident is reflected or reflect.
19. optical sheet as claimed in claim 18, wherein said auxiliary diffusing member have the curve form that extends along the direction parallel with described prism pattern, and described auxiliary diffusing member comprises a plurality of auxiliary diffusion point that is positioned on the described auxiliary diffusing surface.
20. optical sheet as claimed in claim 19, the auxiliary diffusion point of each in wherein said a plurality of auxiliary diffusion points includes a plurality of hemispherical juts.
21. optical sheet as claimed in claim 18 wherein forms cut or crack, with brightness uniformity, visual angle and the half-power angle that strengthens described optical sheet on the surface of each described prism pattern.
22. the optical sheet on the LGP that is arranged on backlight assembly comprises:
First basement membrane; And
Light control film, it comprises a plurality of air ducts, a plurality of prism pattern and organic layer, described a plurality of air duct is positioned on described first basement membrane, thereby on the direction parallel, arrange with described first basement membrane, described a plurality of prism pattern attaches on the upper surface of described first basement membrane, described organic layer covers the top edge of described prism pattern, and to limit the upper surface of described air duct, wherein the lateral edge of each described air duct is by rounding.
23. optical sheet as claimed in claim 22, wherein each described air duct all has the Tp shape.
24. optical sheet as claimed in claim 22, wherein two of each described prism pattern sides extend and the degree of depth at the imaginary edge that forms substantially less than the thickness of described organic layer.
25. optical sheet as claimed in claim 22, wherein said light control film further comprises curvature portion, described curvature portion is along the direction parallel with described air duct, and the boundary section between described prism pattern and described organic layer forms, so that light is carried out diffusion.
26. optical sheet as claimed in claim 22, wherein said light control film further comprise the diffusion part between adjacent prism pattern, so that light is carried out diffusion.
27. optical sheet as claimed in claim 26, wherein said diffusion partly comprise a plurality of hemispherical projections parts.
28. optical sheet as claimed in claim 22, wherein said light control film comprises:
A plurality of prism pattern attach on the upper surface of described first basement membrane, to limit the side of described air duct;
Organic layer covers the top edge of described prism pattern, to limit the upper surface of described air duct; And
The diffusion part, between adjacent prism pattern, so that light is carried out diffusion,
Wherein said diffusion partly has a plurality of recesses, and described recess has hemispherical.
29. optical sheet as claimed in claim 22, wherein said light control film comprises:
A plurality of prism pattern attach on the upper surface of described first basement membrane, to limit the side of described air duct;
Organic layer covers the top edge of described prism pattern, to limit the upper surface of described air duct; And
The diffusion part, between adjacent prism pattern, so that light is carried out diffusion,
Wherein said diffusion partly has a plurality of juts, and described jut has pyramid-shaped.
30. optical sheet as claimed in claim 22, wherein said light control film comprises:
A plurality of prism pattern attach on the upper surface of described first basement membrane, to limit the side of described air duct;
Organic layer covers the top edge of described prism pattern, to limit the upper surface of described air duct; And
The diffusion part, between adjacent prism pattern, so that light is carried out diffusion,
Wherein said diffusion partly has a plurality of recesses, and described recess has pyramid-shaped.
31. optical sheet as claimed in claim 22, wherein said light control film comprises:
A plurality of prism pattern attach on the upper surface of described first basement membrane, to limit the side of described air duct;
Organic layer covers the top edge of described prism pattern, to limit the upper surface of described air duct; And
The diffusion part, between adjacent prism pattern, so that light is carried out diffusion,
Wherein said diffusion partly comprises the auxiliary prism that extends along the direction identical with described prism pattern.
32. optical sheet as claimed in claim 22, wherein said organic layer have and described prism pattern identical materials.
33. optical sheet as claimed in claim 32, wherein said organic layer comprises photocurable material.
34. optical sheet as claimed in claim 22, wherein said light control film further comprises the air bag between adjacent air duct.
35. optical sheet as claimed in claim 34, wherein said air bag is arranged along the lateral edge of adjacent air duct.
36. optical sheet as claimed in claim 22 further comprises:
Second basement membrane is arranged on the described light control film, to protect described light control film; And
Diffusing layer comprises the diffusion particle and described diffusion particle is attached to resin on the upper surface of described second basement membrane.
37. optical sheet as claimed in claim 22 further comprises:
Second basement membrane is arranged on the described light control film, to protect described light control film; And
A plurality of tops prism pattern is arranged to extend along the direction of intersecting with described air duct on described second basement membrane.
38. optical sheet as claimed in claim 37, wherein said air duct has shape of a hoof cross section.
39. optical sheet as claimed in claim 38, wherein said light control film further comprises the diffusion part between adjacent prism pattern, so that light is carried out diffusion, described diffusion part further comprises the auxiliary prism that extends along the direction identical with described prism pattern.
40. optical sheet as claimed in claim 22 further comprises:
Second basement membrane is arranged on the described light control film, to protect described light control film; And
A plurality of control light patterns are arranged to extend across with described air duct on described second basement membrane, and described control light pattern has shape of a hoof cross section.
41. optical sheet as claimed in claim 22 further comprises:
Second basement membrane is arranged on the described light control film, to protect described light control film; And
Second light control film is positioned on described second basement membrane, to comprise a plurality of second air ducts of arranging along the direction parallel with described second basement membrane.
42. optical sheet as claimed in claim 41 further comprises:
The 3rd basement membrane is arranged on described second light control film, to protect described second light control film.
43. optical sheet as claimed in claim 42, wherein said optical sheet has sandwich construction, comprises at least four basement membranes and lay respectively at least three light control films between the described basement membrane in described sandwich construction.
44. a method of making optical sheet, described optical sheet are arranged on the LGP of backlight assembly, described method comprises:
Form a plurality of prism pattern, described a plurality of prism pattern extend parallel to each other on first basement membrane;
Coating is coated on second basement membrane;
In substrate, arrange described second basement membrane, so that described coat side is to described prism pattern;
By pushing described second basement membrane towards described first basement membrane and the top of described prism pattern being inserted in the described coating; And
Described coating is solidified to form organic layer.
45. method as claimed in claim 44 further comprises:
By utilizing surface tension to make the side diffusion of the part of described coating towards described prism pattern, and the boundary between described prism pattern and described coating forms curvature portion.
46. method as claimed in claim 45 further comprises: irradiates light on described coating.
47. method as claimed in claim 45 wherein forms described prism pattern and further is included in formation diffusion part between the adjacent prism pattern.
48. method as claimed in claim 45, wherein said coating comprises photocurable material.
49. method as claimed in claim 45 wherein forms a plurality of recesses on the top of described prism pattern.
50. the optical sheet on the LGP that is arranged on backlight assembly comprises:
First basement membrane;
Temporary transient adhesion coating is positioned on described first basement membrane, and described temporary transient adhesion coating comprises formed thereon and is parallel to a plurality of grooves that described first basement membrane arranges and is positioned at contact portion between adjacent groove; And
Second basement membrane is attached to described contact portion to cover described groove.
51. optical sheet as claimed in claim 50, wherein said temporary transient adhesion coating comprises pressure sensitive material, increases temporary transient adhesion strength with described second basement membrane by external pressure in described pressure sensitive material.
52. optical sheet as claimed in claim 50, wherein compression puts on the middle body of described contact portion, and tensile stress puts on the peripheral part of described contact portion.
53. optical sheet as claimed in claim 50, wherein said adjacent groove and described contact portion form prism pattern, and described optical sheet further comprises the diffusion part, and described diffusion part is between adjacent prism pattern, to have shape for lugs, recess shapes or groove shapes.
54. optical sheet as claimed in claim 50, wherein said contact portion comprise a plurality of recesses formed thereon, described recess and described second basement membrane form a plurality of diffusion capsules.
55. optical sheet as claimed in claim 50 wherein is formed with a plurality of prism pattern on described second basement membrane.
56. optical sheet as claimed in claim 50, wherein said second basement membrane further comprises primer coating, described primer coating has increased the refractive index relevant with the bottom of described second basement membrane, and has increased the temporary transient adhesion strength with described temporary transient adhesion coating and described second basement membrane.
57. the optical sheet on the LGP that is arranged on backlight assembly comprises:
First basement membrane;
The first temporary transient adhesion coating is positioned on described first basement membrane, and the described first temporary transient adhesion coating comprises formed thereon and is parallel to a plurality of first grooves that described first basement membrane arranges and is positioned at first contact portion between the first adjacent groove;
Second basement membrane is attached on described first contact portion, to cover described first groove;
The second temporary transient adhesion coating is positioned on described second basement membrane, and the described second temporary transient adhesion coating comprises formed thereon and a plurality of second grooves of being arranged in parallel with each other and is positioned at second contact portion between the second adjacent groove; And
The 3rd basement membrane is on described second contact portion, to cover described second groove.
58. optical sheet as claimed in claim 57 further comprises a plurality of dot patterns on the lower surface that is positioned at described first basement membrane.
59. optical sheet as claimed in claim 58, wherein said dot pattern is spaced apart from each other.
60. optical sheet as claimed in claim 57 further comprises a plurality of dot patterns on the upper surface that is positioned at described the 3rd basement membrane.
61. optical sheet as claimed in claim 60, wherein said a plurality of dot patterns are arranged to located adjacent one another.
62. optical sheet as claimed in claim 57, the first wherein adjacent groove limits first prism pattern, and the described first temporary transient adhesion coating further comprises the first auxiliary optical part that is arranged between described adjacent first prism pattern.
63. optical sheet as claimed in claim 62, wherein said first auxiliary optical part further comprises a plurality of first auxiliary prism patterns.
64. optical sheet as claimed in claim 62, the second wherein adjacent groove limits second prism pattern, and the described second temporary transient adhesion coating further comprises the second auxiliary optical part that is arranged between described adjacent second prism pattern.
65. as the described optical sheet of claim 64, wherein said second auxiliary optical part further comprises a plurality of second auxiliary prism patterns.
66. a method of making optical sheet, described optical sheet are arranged on the LGP of backlight assembly, described method comprises:
By on first basement membrane, depositing temporary adhesion solution to form temporary transient adhesion coating;
Form a plurality of grooves parallel and the contact portion between adjacent groove by described adhesion coating being carried out composition with described first basement membrane; And
Second basement membrane is adhered to the contact portion of described adhesion coating, to cover described groove.
67., further comprise as the described method of claim 66:
Before described temporary transient coating is carried out composition, increase the viscosity of described temporary adhesion solution.
68. as the described method of claim 66, wherein form described groove and described contact portion further comprises: on described contact portion, form relief pattern, to increase the roughness of described contact portion.
69., wherein form described groove and described contact portion further comprises: make the middle body of described contact portion but not the peripheral part projection as the described method of claim 66.
70. as the described method of claim 69, wherein, in the process of the described contact portion that second basement membrane is adhered to described adhesion coating, by described second basement membrane compression stress is put on the described middle body of described contact portion, and tensile stress is put on the described peripheral part of described contact portion by described second basement membrane.
71. as the described method of claim 66, the described contact portion that wherein second basement membrane is adhered to described adhesion coating further comprises: push described second basement membrane towards described temporary transient coating.
72. a method of making optical sheet, described optical sheet are arranged on the LGP of backlight assembly, described method comprises:
On first basement membrane, deposit photocurable resin, to form photo-induced curing coating;
Described photo-induced curing coating is carried out composition, to form and a plurality of grooves that described first basement membrane is arranged in parallel and the contact portion between adjacent grooves;
Second basement membrane temporarily is adhered to the described contact portion of described photo-induced curing coating, to cover described groove; And
Described photo-induced curing coating is solidified.
73., further comprise as the described method of claim 72:
Before temporarily being adhered to described second basement membrane on the described contact portion, increase the viscosity of the photo-induced curing coating of composition.
74., further comprise as the described method of claim 72:
Before temporarily being adhered to described second basement membrane on the described contact portion, liquid resin is coated on the lower surface of described second basement membrane; And
Described liquid resin is carried out drying, heating or exposure, to form primer coating.
CN200910160851.1A 2008-07-29 2009-07-29 Optical sheet and preparation method thereof Active CN101639201B (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
KR10-2008-0074235 2008-07-29
KR1020080074235 2008-07-29
KR1020080074226A KR100898100B1 (en) 2008-07-29 2008-07-29 Prism sheet
KR10-2008-0074226 2008-07-29
KR1020080074226 2008-07-29
KR1020080074235A KR100898102B1 (en) 2008-07-29 2008-07-29 Optical member and method of manufacturing the same
KR10-2008-0101952 2008-10-17
KR1020080101952 2008-10-17
KR1020080101952A KR100898047B1 (en) 2008-10-17 2008-10-17 Optical member and method of manufacturing the same

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Cited By (12)

* Cited by examiner, † Cited by third party
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CN102933891A (en) * 2010-03-17 2013-02-13 三菱丽阳株式会社 Surface light source device, light guide element used for surface light source device, and method for producing light guide element
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CN103439830A (en) * 2013-07-23 2013-12-11 宁波激智科技股份有限公司 Multifunctional film applied to side-light type backlight module
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CN111602074A (en) * 2019-07-23 2020-08-28 深圳市汇顶科技股份有限公司 Brightness enhancement film and diffuser film for liquid crystal display assembly
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CN114442370A (en) * 2021-12-31 2022-05-06 厦门天马微电子有限公司 Backlight module and display device

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