CN101639201B

CN101639201B - Optical sheet and preparation method thereof

Info

Publication number: CN101639201B
Application number: CN200910160851.1A
Authority: CN
Inventors: 李大焕; 金雨泰; 李敬秀; 金锡�; 黄材善; 安光俊; 郑镇溶; 卞达锡
Original assignee: Tsc Photoelectric Co Ltd
Current assignee: Li Dahuan; Xiubo Ruiyin Optoelectronics Co.,Ltd.
Priority date: 2008-07-29
Filing date: 2009-07-29
Publication date: 2015-06-10
Anticipated expiration: 2029-07-29
Also published as: KR100898100B1; CN101639201A

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 each other 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, front luminance 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, this application claims the right of priority of No. 2008-74226 and 2008-74235 korean patent application submitting on July 29th, 2008 to Korean Intellectual Property Office (KIPO) and the 2008-101952 korean patent application submitted on October 17th, 2008 to Korean Intellectual Property Office, its content is incorporated to herein by reference and all.

Background technology

2. description of related art

In general, the LCD of liquid crystal display (LCD) device comprises the liquid crystal layer between two substrates facing with each other and insertion two substrates.LCD controls the transmittance of liquid crystal layer, to show image.

LCD device has compared with other display device that such as thickness is thin, lightweight, driving voltage is low and the characteristic such as low-power consumption, and thus LCD device is widely used in portable computer, communicator and TV for many industrial circles.But the LCD due to LCD device is the non-luminescent device that itself can not be luminous, therefore need in LCD device for LCD provides the backlight assembly of light.

Backlight assembly comprises light source and the optical sheet for the optical characteristics that strengthens the light that light source produces.Optical sheet comprises prismatic lens, diffusion disk, light guide plate etc.

When optical sheet comprises various optical sheet, the optical characteristics of backlight assembly can be strengthened.But when the quantity of optical sheet increases, the characteristic of assembly may decline and manufacturing cost may improve.

In addition, the region that the defect produced due to cut may contact with each other at optical sheet occurs.

In addition, the visual angle of LCD device may be restricted because of the thickness of liquid crystal layer.

1. the field of 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 the manufacture method thereof with the optical characteristics of enhancing.

Summary of the invention

Exemplary of the present invention provides a kind of optical sheet with the optical characteristics of enhancing.

Exemplary of the present invention additionally provides a kind of method manufacturing above-mentioned optical sheet.

According to an aspect of the present invention, optical sheet comprises basement membrane, multiple prism pattern and diffusing member, and in basement membrane, light is incident from downside.Prism pattern is outstanding with separated from one another on basement membrane, thus strengthens the front face brightness from the light of the downside incidence of basement membrane.Diffusing member is arranged between prism pattern, to have the diffusing surface parallel with basement membrane.Diffusing member comprises multiple diffusion point, and diffusion point can strengthen the brightness uniformity of the light of the downside incidence from basement membrane.

According to another aspect of the present invention, optical sheet comprises basement membrane, multiple prism pattern and diffusing member, and in basement membrane, light is incident from downside.Prism pattern is outstanding with separated from one another on basement membrane, thus strengthens the front face brightness from the light of the downside incidence of basement membrane.Diffusing member is arranged between prism pattern, to have the diffusing surface parallel with basement membrane.Diffusing member comprises multiple diffusion groove, and diffusion groove strengthens the brightness uniformity from the light of the downside incidence of basement membrane.

According to a further aspect of the invention, optical sheet comprises basement membrane, multiple 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-angle triangle formed by the inclined-plane be separated from each other in epilamellar prism district.Diffusing member is arranged in 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 the multiple diffusion points be positioned on diffusing surface.Auxiliary diffusing member is arranged in auxiliary diffusive regions to have the material identical with diffusing member with prism pattern.Diffusing member and prism pattern and diffusing member is assisted to be integrally formed.Assist diffusing member between the adjacent upside of prism pattern, to reflect the light through its incidence or to reflect.

According to a further aspect of the invention, optical sheet comprises the first basement membrane and light control film.Light control film comprises multiple air duct, multiple prism pattern and organic layer.Air duct is positioned on the first basement membrane, thus arranges on the direction parallel with the first basement membrane.Prism pattern attaches on the upper surface of the first basement membrane.Organic layer covers the coboundary of prism pattern, to limit the upper surface of air duct.The lateral edge of each air duct is circular.

According to an also aspect of the present invention, optical sheet comprises the first basement membrane, temporarily adhesive coating and the second basement membrane.Temporary transient adhesive coating is positioned on the first basement membrane, and temporary transient adhesive coating comprises formed thereon and is parallel to multiple groove that the first basement membrane arranges and the contact portion be positioned 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 the first basement membrane, the first temporary transient adhesive coating, the second basement membrane, the second temporary transient adhesive coating and the 3rd basement membrane.First temporary transient adhesive coating is positioned on the first basement membrane.First temporary transient adhesive coating comprises formed thereon and is parallel to multiple first groove that the first basement membrane arranges and the first contact portion be positioned between the first adjacent groove.Second basement membrane is attached in the first contact portion, to cover the first groove.Second temporary transient adhesive coating is positioned on the second basement membrane.Second temporary transient adhesive coating comprises formed thereon and multiple second groove be arranged in parallel with each other and the second contact portion be positioned between the second adjacent groove.3rd basement membrane is attached in the second contact portion, to cover the second groove.

According to a further aspect of the invention, a kind of method manufacturing optical sheet is provided.In the method, form multiple prism pattern, multiple prism pattern extends parallel to each other on the first basement membrane.Then, coating is coated on the second basement membrane.Then, substrate is arranged the second basement membrane, to make coat side to prism pattern.Then, by pressing the second basement membrane towards the first basement membrane, the top of prism pattern is inserted in coating.Then, make curing of coatings to form organic layer.

According to an also aspect of the present invention, provide a kind of method manufacturing optical sheet.In the method, by depositing temporary adhesion solution to form coating of temporarily adhering on the first basement membrane.Then, the multiple groove parallel with the first basement membrane and the contact portion between adjacent groove is formed by carrying out composition to adhesion coating.Then, the second basement membrane is adhered to the contact portion of adhesion coating, to cover groove.

According to a further aspect of the invention, a kind of method manufacturing optical sheet is provided.In the method, the first basement membrane deposits photocurable resin to form photo-induced curing coating.Then, composition is carried out to photo-induced curing coating, to be formed and multiple groove that the first basement membrane is arranged in parallel and the contact portion between adjacent grooves.Then, the second basement membrane is temporarily 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 adjoin because of prism pattern and diffused section and be strengthened, and the visual angle of liquid crystal display (LCD) device also can strengthen.Thus the display quality of LCD device can be strengthened.In addition, adopt in LCD device by utilizing refraction and reflection characteristic to carry out the recess of diffusion or projection to light and do not adopt by utilizing scattering properties to carry out the diffuser of diffusion to light, thus the brightness of LCD device can be strengthened.

In addition, in light control film, air duct is formed with, to strengthen the front face brightness of LCD device.In addition, the coboundary of prism pattern is not exposed to its outside, therefore can prevent from producing cut in another optical sheet.Moreover optical sheet comprises diffused section or air bag, the brightness uniformity of LCD device therefore can be improved.In addition, eliminate additional diffusion disk, therefore the assembling process of LCD device can simplify and the manufacturing cost of LCD device can reduce.

In addition, optical sheet comprises temporary transient adhesive coating, therefore can easily repair the flaw produced because of external impact.In addition, temporary transient adhesion pattern according to the present invention keeps active bonding state, therefore can improve the ability resisting external impact.In addition, brightness, visual angle etc. by strengthening improve the display quality of display device, and the thickness of backlight assembly or LCD device can reduce, thus the display device of manufacture can be made thinner.And the manufacture process of described optical sheet can become simple, thus can reduce the defect rate of described optical sheet, to reduce the manufacturing cost of optical sheet.

Accompanying drawing explanation

Be described in detail exemplary of the present invention by referring to accompanying drawing, above-mentioned and other feature and advantage of the present invention will become more obvious, in the accompanying drawings:

Fig. 1 illustrates the sectional view according to liquid crystal display (LCD) device of exemplary 1;

Fig. 2 is the skeleton view of the optical sheet in key diagram 1;

Fig. 3 is the enlarged perspective of " A " part in Fig. 2;

Fig. 4 A illustrates the sectional view of light transmission by the optical sheet in Fig. 3;

Fig. 4 B is the image of the optical sheet illustrated in Fig. 4 A;

Fig. 5 A illustrates the sectional view according to the optical sheet of exemplary 2 of the present invention;

Fig. 5 B is the image of the optical sheet illustrated in Fig. 5 A;

Fig. 5 C is the image of the optical sheet illustrated according to another embodiment of the invention;

Fig. 5 D is the image of the optical sheet illustrated according to another embodiment of the invention;

Fig. 6 illustrates the skeleton view according to the optical sheet of exemplary 3 of the present invention;

Fig. 7 A is the sectional view of the optical sheet in key diagram 6;

Fig. 7 B is the image of the optical sheet illustrated in Fig. 6;

Fig. 7 C is the image of the optical sheet illustrated according to another embodiment of the invention;

Fig. 8 illustrates the skeleton view according to the optical sheet of exemplary 4 of the present invention;

Fig. 9 is the sectional view of the optical sheet in key diagram 8;

Figure 10 illustrates the skeleton view according to the optical sheet of exemplary 5 of the present invention;

Figure 11 illustrates the sectional view of light transmission by the optical sheet in Figure 10;

Figure 12 is the image of the optical sheet illustrated according to another embodiment of the invention;

Figure 13 is the image of the optical sheet illustrated according to another embodiment of the invention;

Figure 14 is the image of the optical sheet illustrated according to another embodiment of the present invention;

Figure 15 is the image of the optical sheet illustrated according to another embodiment of the present invention;

Figure 16 illustrates the sectional view according to the LCD device of exemplary 6 of the present invention;

Figure 17 is the skeleton view of the optical sheet illustrated in Figure 16;

Figure 18 is the enlarged perspective of " B " part in Figure 17;

Figure 19 A, 20,21,22 and 23A be the sectional view of the manufacture method of the optical sheet illustrated in Figure 18;

Figure 19 B is the image of the prism pattern illustrated in Figure 19 A;

Figure 23 B is the sectional view of the optical sheet illustrated according to another embodiment of the invention;

Figure 24 illustrates the sectional view according to the optical sheet of exemplary 7 of the present invention;

Figure 25 A is the skeleton view of the optical sheet shown according to exemplary 8 of the present invention;

Figure 25 B and 25C is the image of the optical sheet showing Figure 25 A;

Figure 26,27 and 28 is for showing the cut-open view of the method for the optical sheet in shop drawings 25A;

Figure 29 A is the skeleton view of the optical sheet shown according to exemplary 9 of the present invention;

Figure 29 B and 29C is the image of the optical sheet showing Figure 29 A;

Figure 30 A, 33 and 34 is for showing the skeleton view of the method for the optical sheet of shop drawings 29A;

Figure 30 B is the image of the prism pattern showing Figure 30 A;

Figure 31 and 32 is for showing the cut-open view of the method for the optical sheet of shop drawings 29A;

Figure 34 B, 34C and 34D are the image of the optical sheet showing Figure 34 A;

Figure 35 A is the cut-open view of the optical sheet shown according to exemplary 10 of the present invention;

Figure 35 B and 35C is the image of the optical sheet showing Figure 35 A;

Figure 36 A is the cut-open view of the optical sheet shown according to exemplary 11 of the present invention;

Figure 36 B is the image of the prism pattern showing Figure 36 A;

Figure 36 C and 36D is the image of the optical sheet showing Figure 36 A;

Figure 37 A is the skeleton view of the optical sheet shown according to exemplary 12 of the present invention;

Figure 37 B and 37C is the image of the optical sheet shown according to another embodiment of the invention;

Figure 37 D, 37E and 37F are the image of another example of the optical sheet shown according to exemplary 12 of the present invention;

Figure 38 is the skeleton view of the optical sheet shown according to exemplary 13 of the present invention;

Figure 39 A is the skeleton view of the optical sheet shown according to exemplary 14 of the present invention;

Figure 39 B and 39C is the image of the optical sheet showing Figure 39 A;

Figure 39 D and 39E is the image of another example of the optical sheet shown according to exemplary 14 of the present invention;

Figure 40 A is the skeleton view of the optical sheet shown according to exemplary 15 of the present invention;

Figure 40 B and 40C is the image of the optical sheet showing Figure 40 A;

Figure 40 D and 40E is the image of another example of the optical sheet shown according to exemplary 15 of the present invention;

Figure 41 A is be the skeleton view of the optical sheet according to exemplary 16 of the present invention;

Figure 41 B and 41C is the image of the optical sheet showing Figure 41 A;

Figure 42 A is the skeleton view of the optical sheet shown according to exemplary 17 of the present invention;

Figure 42 B and Figure 42 C is the image of the optical sheet showing Figure 42 A;

Figure 43 A is the skeleton view of the optical sheet shown according to exemplary 18 of the present invention;

Figure 43 B and 43C is the image of the optical sheet showing Figure 43 A;

Figure 44 A is the skeleton view of the optical sheet shown according to exemplary 19 of the present invention;

Figure 44 B and 44C is the image of the optical sheet showing Figure 44 A;

Figure 45 is the sectional view of the LCD device illustrated according to exemplary 20 of the present invention;

Figure 46 is the skeleton view of the optical sheet that Figure 45 is described;

Figure 47 is the skeleton view of the amplification of Figure 46 ' C ' part;

Figure 48,49,50 and 51 is the sectional views of the method that the optical sheet manufacturing Figure 47 is described;

Figure 52 is the skeleton view of the optical sheet illustrated according to exemplary 21 of the present invention;

Figure 53,54,55 and 56 is the sectional views of the method that the optical sheet manufacturing Figure 52 is described;

Figure 57 illustrates the sectional view manufactured according to a part for the method for the optical sheet of exemplary 22 of the present invention;

Figure 58 is the sectional view of the optical sheet illustrated according to exemplary 23 of the present invention;

Figure 59 is the sectional view of the method that the optical sheet manufacturing Figure 58 is described;

Figure 60 is the sectional view of the optical sheet illustrated according to exemplary 24 of the present invention;

Figure 61 is the sectional view of the optical sheet illustrated according to exemplary 25 of the present invention;

Figure 62 is the skeleton view of the optical sheet illustrated according to exemplary 26 of the present invention;

Figure 63 is the skeleton view of the optical sheet illustrated according to exemplary 27 of the present invention;

Figure 64 is the skeleton view of the optical sheet illustrated according to exemplary 28 of the present invention;

Figure 65 is the skeleton view of the optical sheet illustrated according to exemplary 29 of the present invention;

Figure 66 is the skeleton view of the optical sheet illustrated according to exemplary 30 of the present invention;

Figure 67 is the skeleton view of the optical sheet illustrated according to exemplary 31 of the present invention;

Figure 68 is the sectional view of the optical sheet illustrated according to exemplary 32 of the present invention;

Figure 69 is the skeleton view of the optical sheet illustrated according to exemplary 33 of the present invention;

Figure 70 is the skeleton view of the optical sheet illustrated according to exemplary 34 of the present invention;

Figure 71 is the skeleton view of the optical sheet illustrated according to exemplary 35 of the present invention;

Figure 72 is the skeleton view of the optical sheet illustrated according to exemplary 36 of the present invention;

Figure 73 is the skeleton view of the optical sheet illustrated according to exemplary 37 of the present invention;

Figure 74 is the sectional view of the optical sheet that Figure 73 is described.

Embodiment

Hereinafter more all sidedly the present invention is described with reference to the accompanying drawing that illustrated therein is exemplary of the present invention.But, the present invention can be implemented by different forms, and the present invention should not be interpreted as the restriction by exemplary herein.On the contrary, provide the object of these exemplary to be make the disclosure thoroughly complete, and scope of the present invention will be passed on fully to those skilled in the art.In the accompanying drawings, may amplify the size in layer and region and relative size for clarity.

Should be appreciated that when speak of element or layer " is positioned at ", on " being connected to " or " being coupled to " another element or layer time, it can be located immediately at, is connected to or is coupled on other elements or layer, or may there is element or the layer of insertion.On the contrary, during when speaking of that element " is located immediately at ", on " being connected directly to " or " coupling directly to " another element or layer, then there is not element or the layer of insertion.The element that numbers identical is in full identical.Term "and/or" used herein comprises the one or more combination in any in cited relevant item and all combines.

Although should be appreciated that term first, second, third, etc. can be used for describing various element, parts, region, layer and/or part in this article, these elements, parts, region, layer and/or part should not be limited to these projects.These terms are only used for an element, parts, region, layer and/or part and another region, layer or part to distinguish.Thus, the first element discussed below, parts, region, layer or part also can be called the second element, parts, region, layer or part, and without departing the teaching of the invention.

Term that herein can be relative in usage space, such as " ... under ", " .... below ", " below ", " top ", " top " etc. so that describe the relativeness of the element of shown in accompanying drawing or feature and other elements or feature.Should be appreciated that spatially relative term is intended to comprise the different azimuth of equipment when using or operate except the orientation described in accompanying drawing.Such as, if the equipment upset in accompanying drawing, the element being described as " below other elements or feature " or " under other elements or feature " will be oriented to " being positioned at above other elements or feature ".Thus, exemplary term " ... below " direction, top and direction, below can be comprised.Described equipment can otherwise directed (rotate 90 degree or be in other orientation), thus the spatially relative description language correspondingly used in herein interpreted.

Term used herein is only intended to describe specific exemplary and unrestricted the present invention.When with time in this article, " one (a or an) " of singulative and " should (the) " be also intended to comprise plural form, unless separately clearly stated in context.Also can understand further, when using in this manual, term " comprises (comprise and/or comprising) " and represents the feature described in existing, entirety, step, operation, element and/or parts, but does not get rid of existence or be attached with one or more further feature, entirety, step, operation, element, parts and/or its combination.

With reference to the sectional view as the indicative icon of Utopian exemplary (and intermediate structure) of the present invention, exemplary of the present invention is described herein.Therefore, it is expected to the change of the diagram shape such as caused due to manufacturing technology and/or tolerance.Thus, exemplary of the present invention should not be construed as the given shape in the region being confined to illustrate herein, but should be interpreted as comprising the form variations such as produced by manufacturing.Such as, the injection region being depicted as rectangle its edge usually by there is rounding or bending feature and/or will have implantation concentration gradient, instead of the binary from injection region to non-injection regions changes.Similarly, the buried regions formed by injecting may cause some injections in the region between buried regions and the surface that injection is occurred by it.Thus, the region shown in accompanying drawing is actually schematic, its shape the true form in the region of not intended to be indication device, and and not intended to be limit the scope of the invention.

Unless otherwise defined, all terms used herein (comprising technology and scientific terminology) are identical with usual the understood implication of those skilled in the art.Be further appreciated that those terms defined in such as common dictionary should be interpreted as having the implication consistent with implication in its association area further, unless and define clearly herein, in idealized or too regular mode, it can not be made an explanation.

Hereinafter describe the present invention in detail with reference to the accompanying drawings.

exemplary 1

Fig. 1 illustrates the sectional view 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 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-illumination type light source module.

When light source module 110 is direct-illumination type light source module, can by multiple light source (not shown), such as the arrangement such as cold-cathode fluorescence lamp (CCFL), plane fluorescent lamp (FFL), light emitting diode (LED) is in the plane.

When light source module 110 is edge-illumination type light source module, light source module 110 can comprise the light guide plate (not shown) that light source (such as fluorescent light, LED etc.) and the light that sent by this light source guide to optical sheet 120.

Optical sheet 120 is arranged on light source module 110 to strengthen the optical characteristics of the light that light source module 110 sends.Such as, optical sheet 120 can strengthen front face brightness, brightness uniformity etc.Optical sheet 120 can comprise diffusing panel, diffusion disk, prismatic lens, semi-permeable diaphragm, diaphragm etc.In the present embodiment, optical sheet 120 can comprise the prismatic lens that will describe hereinafter.

LCD 130 is arranged on optical sheet 120, with by making the optical transport through optical sheet 120 show image by the liquid crystal layer be placed in two substrates.As selection, also LCD 130 can be replaced with various passive type display panel (such as electrophoretic display device, EDD).

Fig. 2 is the skeleton view of the optical sheet in key diagram 1.Fig. 3 is the enlarged perspective of " A " part in 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 multiple prism pattern 1210 and multiple diffusing member 1220.

Basement membrane 1201 can have film shape.Basement membrane 1201 can comprise lucite.Such as, lucite can comprise polyethylene terephthalate (PET), methacrylic resin, acryl resin, polycarbonate (PC) resin, vibrin, vestolit etc.In the present embodiment, basement membrane 1201 comprises polyethylene terephthalate (PET).

Prism pattern 1210 is spaced and outstanding on basement membrane 1201.In the present embodiment, prism pattern 1210 and basement membrane 1201 are integrally formed.

Prism pattern 1210 has many different shape of cross sections.In Fig. 2 and Fig. 3, the xsect of each prism pattern 1210 can be isosceles triangle.In this case, the xsect of each prism pattern 1210 can have right-angle triangle.In another embodiment, the xsect of each prism pattern 1210 can have 3 to 32 limits.Such as, each prism pattern 1210 can have trapezoidal, pentagon, heptagon etc. compared with downside.

When the xsect of each prism pattern 1210 has isosceles triangle, the drift angle of isosceles triangle can have the scope of about 1 degree to about 179 degree.

Prism pattern 1210 comprises lucite.In the present embodiment, prism pattern 1210 comprises photocurable material, thermoset materials etc., also comprises the material being different from basement membrane 1201.In this case, prism pattern 1210 will guide from the light of basement membrane 1201 incidence along the direction perpendicular to basement membrane 1201 thus the front face brightness of LCD device can be enhanced.

Diffusing member 1220 is arranged between prism pattern 1210.Diffusing member 1220 is arranged between the side surface of adjacent prism pattern 1210.Such as, diffusing member 1220 can be integrally formed with basement membrane 1201 and prism pattern 1210.Diffusing member 1220 and prism pattern 1210 are formed from same layer.

The diffusing surface of diffusing member 1220 is parallel with basement membrane 1201.

Multiple diffusion point is formed throughout the diffusing surface of diffusing member 1220.In the present embodiment, diffusion point comprises multiple recess 1225 be formed on diffusion point.Recess 1225 is embedded in each prism pattern 1210 towards the direction contrary with the projected direction of each prism pattern 1210 relative 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.

Such as, recess 1225 can have hemispherical.That is, when observing from vertical view, prism pattern 1210 has the shape extended in a first direction; But each recess 1225 has examples of dot shaped.As selection, each recess 1225 can have various shape such as such as elliptical point, polygon form point etc.

In the present embodiment, recess 1225 is arranged adjacent to each other.In another embodiment, recess 1225 is separated from each other, and can be planar section between adjacent recess 1225.

Fig. 4 A illustrates the sectional view of light transmission by the optical sheet in Fig. 3.Fig. 4 B is the image of the optical sheet illustrated in Fig. 4 A.

With reference to Fig. 1,2,3,4A and 4B, light L1, L2, L3 and L4 that light source module 110 sends incide the lower surface of basement membrane 1201.Optical sheet comprises the prism region PR corresponding to the refractive pattern 1210 and diffusion area DR corresponding to diffusing member 1220.

The light L1 transmitted to the prism region PR of optical sheet reflects at the outside surface of prism pattern 1210, to be directed in the vertical direction of basement membrane 1201.

Light L2, L3 and L4 of transmitting to the diffusion area DR of optical sheet are by recess 1225 diffusion of diffusing member 1220.

Part is reflected to the light of diffusion area DR transmission by recess 1225, and is totally reflected by the lateral surface of each prism pattern 1210 to be directed in the vertical direction of basement membrane 1201 subsequently.

And part is totally reflected to the light L3 of diffusion area DR transmission by the surface of recess 1225, and is reflected to be directed on the direction vertical with basement membrane 1201 by each prism pattern 1210 subsequently.

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 130 subsequently.

In the present embodiment, the recess 1225 of diffusing member 1220 can as the lenticule reflecting light L2, L3 and L4 or reflect.

According to the present embodiment, prism pattern 1210 and diffusing member 1220 are arranged one by one, thus front face brightness and brightness uniformity are enhanced simultaneously.

And, utilize refraction and reflection characteristic to carry out the recess 1225 of diffusion to light owing to have employed in LCD device, and do not adopt and utilize scattering nature to carry out the diffusing device of diffusion to light, thus the brightness of LCD device can be enhanced.

exemplary 2

Fig. 5 A illustrates the sectional view according to the optical sheet of exemplary 2 of the present invention.Fig. 5 B is the image of the optical sheet illustrated in Fig. 5 A.In the present embodiment, except diffusing member, optical sheet is identical with the optical sheet of exemplary 1 substantially, therefore omits any describing in further detail about similar elements.

With reference to Fig. 5 A and Fig. 5 B, diffusing member 1230 is arranged between prism pattern 1210.

Multiple jut 1235 is formed on the diffusing surface of diffusing member 1230.Jut 1235 projects upwards in the side identical with the projected direction of each prism pattern 1210 relative to diffusing surface.

Such as, jut 1235 can have hemispherical.That is, when observing from vertical view, prism pattern 1210 has the shape extended in a first direction; But each jut 1235 has examples of dot shaped.As selection, each jut 1235 can have the shape such as elliptical point, polygon form point.In another embodiment, each jut 1235 can have arbitrary polygon pattern.

In the present embodiment, jut 1235 is arranged adjacent to each other.In another embodiment, jut 1235 is arranged with being separated from each other, and can be planar section between adjacent jut 1235.

Fig. 5 C is the image of the optical sheet illustrated according to another embodiment of the invention.In the present embodiment, except diffusing member, optical sheet is identical with the optical sheet of exemplary 2 substantially, therefore omits any describing in further detail about similar elements.

With reference to Fig. 5 C, diffusing member is arranged in prism pattern, and multiple recess is formed on the diffusing surface parallel with base.This recess has hemispherical.

Fig. 5 D is the image of the optical sheet illustrated according to another embodiment of the invention.In the present embodiment, except diffusing member, optical sheet is identical with the optical sheet in Fig. 5 C substantially, therefore omits any describing in further detail about similar elements.

With reference to Fig. 5 D, multiple jut is formed on the diffusing surface of diffusing member.Jut has hemispherical.

exemplary 3

Fig. 6 illustrates the skeleton view according to the optical sheet of exemplary 3 of the present invention.Fig. 7 A is the sectional view of the optical sheet in key diagram 6.Fig. 7 B is the image of the optical sheet illustrated in Fig. 6.In the present embodiment, except diffusing member, optical sheet is identical with the optical sheet of exemplary 1 substantially, therefore omits any describing in further detail about similar elements.

With reference to Fig. 6,7A and 7B, multiple recess 1245 is formed on the diffusing surface of diffusing member 1240.Recess 1245 is recessed on the direction contrary with the projected direction of each prism pattern 1210 relative to diffusing surface.In another embodiment, multiple jut (not shown) can be formed as projecting upwards in the side identical with the projected direction of each prism pattern 1210 on diffusing surface.

Such as, recess 1245 can have pyramid.That is, prism pattern 1210 has the shape extended in a first direction; But each recess 1245 has rectangular dots shape.

In fig. 7, relative to the vertical direction of basement membrane 1201, the interior angle θ 1 of the drift angle of each prism pattern 1210 is different from the interior angle θ 2 of the drift angle of each recess 1245.Such as, the interior angle θ 1 of the drift angle of each prism pattern 1210 can be larger than the interior angle θ 2 of the drift angle of each recess 1245.

In the present embodiment, recess 1245 is arranged adjacent to each other.In another embodiment, recess 1245 is arranged with being separated from each other, and can there is planar section between adjacent recesses 1245.

Fig. 7 C represents the image according to the optical sheet of another embodiment of the invention.In the present embodiment, except diffusing member, optical sheet is identical with the optical sheet of exemplary 3 substantially, therefore omits any describing in further detail about similar elements.

With reference to Fig. 7 C, multiple diffusing member is arranged in prism pattern, and multiple recess is formed on the diffusing surface parallel with base.Recess is pyramid.

exemplary 4

Fig. 8 illustrates the skeleton view according to the optical sheet of exemplary 4 of the present invention.Fig. 9 is the sectional view of the optical sheet in key diagram 8.In the present embodiment, except auxiliary diffusing member, optical sheet is identical with the optical sheet of exemplary 1 substantially, therefore omits any describing in further detail about similar elements.

With reference to Fig. 8 and Fig. 9, optical sheet comprises basement membrane 1201, multiple prism pattern 1210, diffusing member 1250 and auxiliary diffusing member 1257.In the present embodiment, optical sheet is limited with the prism region PR corresponding to prism pattern 1210, the diffusion area DR1 corresponding to diffusing member 1250 and corresponds to the auxiliary diffusion area DR2 of auxiliary diffusing member 1257.

Diffusing member 1250 is arranged between adjacent prisms pattern 1210.In the present embodiment, diffusing member 1250 and adjacent prism pattern 1210 separate.

Multiple recess 1255 is formed on the diffusing surface of diffusing member 1250.

Multiple diffusing member 1257 is arranged between diffusing member 1250 and 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, with reflect or bounce transmission to the light of auxiliary diffusion area DR2, thus assist diffusing member 1257 can strengthen front face brightness and the brightness uniformity of LCD device.In the present embodiment, auxiliary diffusing member 1257 can have various shape such as such as jut, recess etc.

In the present embodiment, prism pattern 1210, diffusing member 1250 and auxiliary diffusing member 1257 are formed by same layer, and are integrally formed with basement membrane 1201.

According to the present embodiment, optical sheet has auxiliary diffusing member 1257, thus the front face brightness of LCD device and brightness uniformity can be enhanced.

exemplary 5

Figure 10 illustrates the skeleton view according to the optical sheet of exemplary 5 of the present invention.In the present embodiment, except prism pattern and auxiliary diffusing member, optical sheet is identical with the optical sheet of exemplary 1 substantially, therefore omits any describing in further detail about similar elements.

With reference to Figure 10, optical sheet comprises basement membrane 1201, multiple prism pattern 1310 and 1315, diffusing member 1220 and auxiliary diffusing member 1330.In the present embodiment, corresponding to prism pattern 1310 prism region PR, be limited on optical sheet corresponding to the diffusion area LDR of the diffusing member 1220 and auxiliary diffusion area HDR that corresponds to auxiliary diffusing member 1330.

Prism pattern 1310 and 1315 is configured to spaced on basement membrane 1201.In the present embodiment, prism pattern 1310 and 1315 has rectangular shape facing with each other.Prism pattern 1310 and 1315 and basement membrane 1201 are integrally formed by photocurable resin.

Diffusing member 1220 be arranged on adjacent prisms pattern 1310 and 1315 adjacent compared with between downside with the adjacent comparatively downside both connecting.

Multiple recess 1225 is 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 the shape such as semielliptical shape, polygonal pyramid shape.In another embodiment, multiple jut (not shown) can be formed on the diffusing surface of diffusing member 1220.

With the adjacent upper side both connecting between the adjacent upper side that auxiliary diffusing member 1330 is arranged on adjacent pyramid pattern 1310 and 1315.

Multiple supplementary projection part 1335 is 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 the shapes such as semisphere, semielliptical shape, polygonal pyramid shape.In another embodiment, multiple recess (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 to be integrally formed with basement membrane 1201.

Figure 11 illustrates the sectional view of light transmission by the optical sheet in Figure 10.

With reference to Fig. 1,10 and 11, light L5, L6, L7 and L8 that light source module 110 sends are incident from the lower surface of basement membrane 1201.Optical sheet comprises the prism region IR corresponding to prism pattern 1310 and 1315, the diffusion area LDR corresponding to diffusing member 1220 and corresponds to the auxiliary diffusion area HDR of auxiliary diffusing member 1330.

The light L6 transmitted to the prism region IR of optical sheet prism pattern 1310 with 1315 outer surface there is refraction to be directed on the direction vertical with basement membrane 1201.

In incident ray L5, L6, L7 and L8, partly to light L7 and L8 that the diffusion area LDR of optical sheet transmits, namely, light L7 by recess 1225 diffusion of diffusing member 1220, the light of remainder and light L8 by diffusing member 1220 diffusion with by prism pattern 1310 and 1315 diffusion or refraction.

To the light L5 of the auxiliary diffusion area HDR transmission of optical sheet by jut 1335 diffusion of assisting 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 reflecting light L5, L7 and L8 or reflect.

According to the present embodiment, optical sheet has auxiliary diffusing member 1330, thus the front face brightness of LCD device and brightness uniformity can be enhanced.

Figure 12 is the image of the optical sheet illustrated according to another embodiment of the invention.In the present embodiment, except diffusing member, optical sheet is identical with the optical sheet of exemplary 1 substantially, therefore omits any describing in further detail about similar elements.

With reference to Figure 12, diffusing member is arranged between adjacent prisms pattern to comprise the auxiliary prism pattern that the direction parallel with prism pattern, multiple edge extends.In the present embodiment, auxiliary prism pattern is recessed between adjacent prisms pattern.

Figure 13 is the image of the optical sheet illustrated according to another embodiment of the invention.In the present embodiment, except diffusing member, optical sheet is identical with the optical sheet of exemplary 1 substantially, therefore omits any describing in further detail about similar elements.

With reference to Figure 13, diffusing member is arranged in each prism pattern.Diffusing member is included in the diffusion groove that the direction parallel with prism pattern extends.In the present embodiment, diffusion groove has triangular cross-sectional shape.

Figure 14 is the image of the optical sheet illustrated according to another embodiment of the invention.In the present embodiment, except diffusing member, optical sheet is identical with the optical sheet of exemplary 1 substantially, therefore omits any describing in further detail about similar elements.

With reference to Figure 14, diffusing member is arranged between adjacent prism pattern to comprise multiple auxiliary prism pattern.

Figure 15 is the image of the optical sheet illustrated according to another embodiment of the invention.In the present embodiment, except diffusing member, optical sheet is identical with the optical sheet of exemplary 1 substantially, therefore omits any describing in further detail about similar elements.

With reference to Figure 15, diffusing member is arranged on the top of each prism pattern, to comprise multiple diffusion groove extended on the direction parallel with prism pattern.In the present embodiment, each diffusion groove has triangular cross-sectional shape.

In another embodiment, because thin cut or minute crack are formed on the surface of each prism pattern and diffusion point, thus 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 be enhanced by juxtaposition prism pattern and diffused section, and the visual angle of LCD device can strengthen.Further, the display defect such as such as white point, stain, moore phenomenon can improve.

And, utilize refraction and reflection characteristic to carry out the recess of diffusion to light or jut is used in LCD device, and do not adopt and utilize diffusive properties to carry out the diffusing device of diffusion to light, thus the brightness of LCD device can be enhanced.

And optical sheet has auxiliary diffusing member, thus the front face brightness of LCD device and brightness uniformity can be enhanced.

exemplary 6

Figure 16 illustrates the sectional view according to the LCD device of exemplary 6 of the present invention.

With reference to Figure 16, LCD device comprises light source module 210, optical sheet 220 and LCD 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-illumination type light source module.

When light source module 210 is direct-illumination type light source module, can by multiple light source (not shown), such as CCFL, FFL, LED etc. are arranged on flat board.

When light source module 210 is edge-illumination type light source module, light source module 210 can comprise the light guide plate (not shown) that light source (such as fluorescent light, LED etc.) and the light that sent by light source guide to optical sheet 220.

Optical sheet 220 is arranged on light source module 210 to strengthen the optical characteristics of the light that light source module 210 sends.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, LCD device may further include various optical sheet, such as diffusing panel, diffusion disk, prismatic lens, semi-permeable diaphragm, the second basement membrane etc.

LCD 230 is arranged on optical sheet 220, makes optical transport through optical sheet 220 by putting into the liquid crystal layer two substrates, to show image.As selection, various passive type display panel (such as electrophoretic display device, EDD) also can be adopted to replace LCD 230.

Figure 17 is the skeleton view of the optical sheet illustrated in Figure 16.Figure 18 is the enlarged perspective of " B " part in Figure 17.

With reference to Figure 17 and 18, optical sheet 220 comprises the first basement membrane 2201, light control film 2210 and the second basement membrane 2202.

First basement membrane 2201 can have film shape.First basement membrane 2201 can comprise lucite.Such as, synthetic resin can comprise polyethylene terephthalate (PET), methacrylic resin, acryl resin, polycarbonate (PC) resin, vibrin, vestolit etc.In the present embodiment, the first basement membrane 2201 comprises polyethylene terephthalate (PET).

Light control film 2210 is arranged on the first basement membrane 2201 to comprise the air duct 2220 that the direction parallel with the first basement membrane 2201, multiple edge arranges.

In the present embodiment, multiple prism pattern 2212 and organic layer 2214 are bonded to each other and form the air duct 2220 of light control film 2210, thus air duct 2220 has triangular cross section.As selection, each air duct 2220 can have isosceles triangle, right-angle triangle, the shape such as trapezoidal.In another embodiment, each air duct 2220 can have such as polygon, the shape of a hoof, semicircle, circular iso-cross-section shape.

Prism pattern 2212 is attached to the upper surface of the 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, thermoset materials etc., also comprises the material being different from the first basement membrane 2201.In this case, prism pattern 2212 and the first basement membrane 2201 can be formed by same layer.That is, the material of prism pattern 2212 is identical with the material of the first basement membrane 2201.Therefore, guided along the direction perpendicular to the first basement membrane 2201, to strengthen the front face brightness of LCD device from the light of the first basement membrane 2201 incidence by the first basement membrane 2201.

Organic layer 2214 covers the coboundary of prism pattern 2212 to limit the upper surface of air duct 2220.In the present embodiment, organic layer 2214 has the material identical with the material of prism pattern 2212, to be integrally formed with prism pattern 2212.

The degree of depth at the imaginary edge that two sides of prism pattern 2212 extend and arrive is less than the thickness of organic layer 2214.

In the present embodiment, prism pattern 2210 and the first basement membrane 2201 are integrally formed.

To protect light control film 2210 on the organic layer 2214 that second basement membrane 2202 is arranged on light control film 2210.In the present embodiment, the second basement membrane 2202 has the material identical with the material of the first basement membrane 2201.As selection, the second basement membrane 2202 can be omitted.

First basement membrane 2201, light control film 2210 and the second basement membrane 2202 can be formed integral with one anotherly.

Figure 19 A, 20,21,22 and 23A be the sectional view of the manufacture method of the optical sheet illustrated in Figure 18.Figure 19 B is the image of the prism pattern illustrated in Figure 19 A.Figure 19 A illustrates the sectional view forming the step of prism pattern 2212 ' on the first basement membrane 2201, and Figure 19 B is the image of the prism pattern 2212 ' illustrated in Figure 19 A.

With reference to Figure 19 A and Figure 19 B, multiple prism pattern 2212 ' extended in a direction parallel to each other is formed on the first basement membrane 2201.Prism pattern 2212 ' can be formed on the first basement membrane 2201 by various methods such as such as roller, press, printing, etchings.

Figure 20 is for illustrating the sectional view of the step of applying coating 2214 ' on the second basement membrane 2202.

With reference to Figure 20, coating 2214 ' is not cured and thus has mobility.Such as, coating 2214 ' can comprise polyvinyl resin.

Figure 21 illustrates the sectional view irradiating the step of light in coating.

With reference to Figure 21, ultraviolet lighting is mapped to and is coated in coating 2214 ' (as shown in figure 20) on the second basement membrane 2202 to increase viscosity.In the present embodiment, control the intensity of the ultraviolet light that will be irradiated in coating 2214 ', thus be there is by the coating 2214 ' of UV-irradiation the gel form keeping mobility.

In another embodiment, solvent evaporates from the coating 2214 ' be coated in the second basement membrane 2202, thus coating 2214 ' can have gel form.When being coated in the coating 2214 ' on the second basement membrane 2202 and there is full-bodied gel form, the step of irradiating ultraviolet light can be omitted.

Figure 22 illustrates the sectional view the first basement membrane in fig. 19 a arranging the step of the second basement membrane in Figure 21.

With reference to Figure 22, the second basement membrane 2202 is arranged on the first basement membrane 2201, thus makes the coating 2214 through UV-irradiation " towards prism pattern 2212 '.

In the present embodiment, the coating 2214 through UV-irradiation " there is high viscosity, thus coating 2214 " can not sputter to the side surface of prism pattern 2212 ', therefore the side surface edge of air duct 2220 has acute angle.

Then, extruded to the first basement membrane 2201 will by the coating 2214 ' of UV-irradiation to be embedded on the top of prism pattern 2212 ' for the second basement membrane 2202.Such as, the second basement membrane 2202 can be extruded by the machinery such as press, roller.

Figure 23 A is the sectional view of the prism pattern illustrated in Figure 22 of being combined with coating.

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 by the coating 2214 of UV-irradiation " depth ratio coating 2214 " thickness little.That is, two sides of each prism pattern 2212 extend and the degree of depth " d " at imaginary edge that reaches is 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, thus 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 coboundary of prism pattern 2212 is also not exposed to outside it, thus can prevent from forming cut on another optical sheet.

Figure 23 B is the sectional view of the optical sheet illustrated according to another embodiment of the invention.In the present embodiment, except air duct 2226, optical sheet is substantially identical with the optical sheet of exemplary 6, therefore omits any describing in further detail about similar elements.

With reference to Figure 23 B, optical sheet comprises the first basement membrane 2201, light control film 2216 and the second basement membrane 2202.

Light control film 2216 is arranged on the first basement membrane 2201 to comprise multiple air duct 2226 arranged on the direction parallel with the first basement membrane 2201.In the present embodiment, the lateral edges of each air duct 2226 has sharp shape.

In the present embodiment, multiple prism pattern 2212, organic layer 2214 and diffuse edges part 2226a are bonded to each other the air duct 2226 limiting light control film 2216.

Organic layer 2214 covers the coboundary of prism pattern 2212 to limit the upper surface of air duct 2226.In the present embodiment, organic layer 2214 has the material identical with prism pattern 2212 to be integrally formed with prism pattern 2212.In another embodiment, organic layer 2214 can comprise the tackifying resin different from the material of prism pattern 2212.

Diffuse edges part 2226a is formed in boundary member between prism pattern 2212 and 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 irradiating ultraviolet light in figure 21, in order to form the diffuse edges part 2226a of each air duct 2226, the exposure of ultraviolet light compares exemplary 6 to be increased to some extent, thus adds the viscosity of coating.

exemplary 7

Figure 24 illustrates the sectional view according to the optical sheet of exemplary 7 of the present invention.In the present embodiment, except diffusing layer, optical sheet is identical with the optical sheet of exemplary 1 substantially, therefore omits any describing in further detail about similar elements.

With reference to Figure 24, optical sheet comprises the first basement membrane 2201, light control film 2210, second basement membrane 2202 and diffusing layer 2230.

Diffusing layer 2230 is attached on the second basement membrane 2202 to comprise multiple diffuser particles 2232 and resin 2234.Diffuser particles 2232 attaches on the second basement membrane 2202 by resin 2234.In another embodiment, diffuser particles 2232 can be arranged in the second basement membrane 2202 or the first basement membrane 2201.

According to the present embodiment, optical sheet comprises diffusing layer 2230, thus the brightness uniformity of LCD device can be enhanced.Further, owing to eliminating additional diffusion disk, thus the assembling process that can simplify LCD device also can reduce the manufacturing cost of LCD device.

exemplary 8

Figure 25 A illustrates the skeleton view according to the optical sheet of exemplary 8 of the present invention.Figure 25 B and 25C is the image of the optical sheet showing Figure 25 A.In the present embodiment, except light control film, optical sheet is substantially identical with the optical sheet of exemplary 1, therefore, by omission describing in further detail about similar elements.

See Figure 25 A, 25B and 25C, optical sheet comprises the first basement membrane 2201, light control film 2310 and the second basement membrane 2202.

Light control film 2310 is arranged on the first basement membrane 2201, thus comprises multiple air duct 2320, and air duct 2320 arranges on the direction parallel with the first basement membrane 2201.In this exemplary, the lateral edges of air duct 2320 can be circle.

In the present embodiment, multiple prism pattern 2212, organic layer 2314 are connected with curvature portion 2316, to form the air duct 2320 of light control film 2310.

Organic layer 2314 covers the coboundary of prism pattern 2212, to limit the upper surface of air duct 2320.In the present embodiment, organic layer 2314 has the material identical with prism pattern 2212, thus is integrally formed with prism pattern 2212.

Two sides of prism pattern 2212 extend to imaginary edge, and the degree of depth at this imaginary edge is less than the thickness of organic layer 2314.

The boundary member of curvature portion 2316 along the direction parallel with air duct 2320 between prism pattern 2212 and organic layer 2314 is formed, to carry out diffusion to light.

In the present embodiment, prism pattern 2212, organic layer 2314 and curvature portion 2316 have mutually the same material, thus formation integral with one another.

Figure 26,27 and 28 is for showing the cut-open view of the method for the optical sheet in shop drawings 25A.

As shown in Figure 19 A, the first basement membrane 2201 forms multiple prism pattern 2212 '.

Figure 26 is for showing the cut-open view of the step of applying coating 2314 ' on the second basement membrane 2202.

See Figure 26, coating 2314 ' uncured, therefore has mobility.In the present embodiment, the step of the extra light of irradiation is as shown in figure 21 eliminated.

Figure 27 is the cut-open view of the step showing the second basement membrane arranging Figure 26 on first basement membrane of Figure 19 A.

See Figure 28, the first basement membrane 2201 arranges the second basement membrane 2202, thus makes coating 2314 ' facing to prism pattern 2212 '.

Then, press the second basement membrane 2202 towards the first basement membrane 2201, thus the top of prism pattern 2212 ' is inserted in coating 2314 '.

In the present embodiment, coating 2314 ' has lower viscosity.Therefore, coating 2314 ' can to the side diffusion of prism pattern 2212 '.

Figure 28 shows cut-open view prism pattern be as shown in figure 27 connected with coating.

See Figure 27 and 28, due to the surface tension that prism pattern 2212 causes, a part for coating 2314 ' diffuses to the position corresponding with diffused section 2316.

Then, ultraviolet lighting is incident upon in coating 2314 ', to form organic layer 2314 and diffused section 2316.

The degree of depth that each prism pattern 2212 ' is inserted is less than the thickness of coating 2314 '.That is, two sides of each prism pattern 2212 extend and the degree of depth " d " at imaginary edge that arrives is less than the thickness " h " of organic layer 2214.

Thus, define air duct 2320.Air duct 2320 comprises the side limited by prism pattern 2212, the edge of the rounding limited by diffused section 2316 and the upper surface that limited by organic layer 2214.

According to the present embodiment, light control film 2310 comprises curvature portion 2316, thus makes the lateral edge of each air duct 2320 for circular.In addition, because curvature portion 2316 carries out diffusion when not having additional dispersant to light, so the homogeneity of brightness can be improved and do not reduce brightness.

exemplary 9

Figure 29 A is the skeleton view of the optical sheet shown according to exemplary 9 of the present invention.Figure 29 B and 29C is the image of the optical sheet showing Figure 29 A.In the present embodiment, except air bag, optical sheet is substantially identical with the optical sheet of exemplary 6, therefore, eliminates describing in further detail about similar elements.

See Figure 29 A, 29B and 29C, optical sheet comprises the first basement membrane 2201, light control film 2410 and the second basement membrane 2202.

Light control film 2410 is arranged on the first basement membrane 2201, thus is included in multiple air ducts 2220 that the direction parallel with the first basement membrane 2201 arranges.

In the present embodiment, prism pattern 2412 and organic layer 2412 are interconnected, to form the air duct 2220 of light control film 2410.

The top of each prism pattern 2412 is formed multiple air bag 2416.In the present embodiment, air bag 2416 is arranged between prism pattern 2412 and organic layer 2414.Such as, air bag 2416 can be semisphere, polygonal pyramid shape, hexahedron etc.

Be incident to a part for the light of optical sheet by air bag 2416 diffusion, thus can brightness uniformity be improved.

Figure 30 A, 33 and 34 is for showing the skeleton view of the method for the optical sheet of shop drawings 29A.Figure 30 B is the image of the prism pattern showing Figure 30 A.Figure 31 and 32 is for showing the cut-open view of the method for the optical sheet of shop drawings 29A.Figure 30 A forms the skeleton view of the step of prism pattern 2412 ' on the first basement membrane 2201 for showing.Figure 30 B is the image of the prism pattern 2412 ' showing Figure 30 A.

See Figure 30 A and 30B, each prism pattern 2412 ' all has the shape that its top is cut off.The upper surface of prism pattern 2412 ' is formed with multiple recess 2416 ' respectively.

In the present embodiment, recess 2416 ' is arranged adjacent to each other.Here, recess 2416 ' also can be separated mutually.

Figure 31 is for showing the cut-open view of the step of applying coating 2414 ' on the second basement membrane 2202.

See Figure 31, coating 2414 ' uncured, therefore has mobility.

Figure 32 is the cut-open view of the step showing irradiating ultraviolet light in the coating of Figure 31.

See Figure 32, applying coating (as shown in figure 31 2414 ') on the second basement membrane 2202, to increase viscosity, is incident upon ultraviolet lighting in this coating.

Figure 33 is the cut-open view of the step showing the second basement membrane arranging Figure 31 on first basement membrane of Figure 30 A.

See Figure 33, the first basement membrane 2201 arranges the second basement membrane 2202, thus makes coating 2414 " in the face of prism pattern 2412 '.In this case, the distance between the first basement membrane 2201 and the second basement membrane 2202 equals height Tp and the coating 2414 of prism pattern 2412 ' substantially " thickness " h " sum.

Then, press the second basement membrane 2202 towards the first basement membrane 2201, thus coating 2214 ' is inserted on the top of prism pattern 2212 ', ultraviolet lighting is incident upon in coating 2214 '.

Figure 34 A shows the cut-open view prism pattern of Figure 33 be connected with coating.Figure 34 B, 34C and 34D are the image of the optical sheet showing Figure 34 A.

See Figure 33,34A, 34B, 34C and 34D, coating 2412 " a part cover on the top of the upper recess 2416 ' formed of prism pattern 2412 ', to form air bag 2416.

Prism pattern 2412 ' insert coating 2414 " the degree of depth be less than coating 2414 " thickness " h ".Therefore, the lower surface of prism pattern 2412 and coating 2414 " lower surface between distance Tf be less than the height Tp of prism pattern 2412 ' before pressing.

Then, ultraviolet lighting is incident upon coating 2412 ", to form organic layer 2412.

Thus, form air duct 2320 and air bag 2416.Air duct 2320 has the side limited by prism pattern 2412 and the upper surface limited by organic layer 2414.Air bag 2416 has the side and lower surface that are limited by the recess 2416 ' formed on the upper surface of prism pattern 2412, also has the upper surface limited by organic layer 2414.

According to the present embodiment, light control film 2410 comprises air bag 2416, thus makes light can the diffusion when not having additional dispersant.Therefore, can brightness uniformity be improved and not reduce brightness.

exemplary 10

Figure 35 A is the cut-open view of the optical sheet shown according to exemplary 10 of the present invention.Figure 35 B and 35C is the image of the optical sheet showing Figure 35 A.In the present embodiment, except diffusing member, optical sheet is substantially identical with the optical sheet of exemplary 6, therefore, will omit the further specific descriptions about similar elements.

See Figure 35 A, 35B and 35C, light control film 2510 comprises multiple prism pattern 2512, multiple diffused section 2515 and organic layer 2514.

Diffused section 2515 is arranged between prism pattern 2512 adjacent one another are, to carry out diffusion to light.

In the present embodiment, diffused section 2515 comprises multiple hemispherical jut 2516.

The lower surface of the side of prism pattern 2512, the upper surface of diffused section 2512 and organic layer 2514 can limit multiple air duct 2520.

The light being incident to optical sheet guides to its frontal from the boundary surface between the peripheral part and prism pattern 2512 of air duct 2520, and the edge surface diffusion between the middle body and diffused section 2515 of air duct 2520.

exemplary 11

Figure 36 A is the cut-open view of the optical sheet shown according to exemplary 11 of the present invention.Figure 36 B is the image of the prism pattern showing Figure 36 A.Figure 36 C and 36D is the image of the optical sheet showing Figure 36 A.In the present embodiment, except diffusing member, optical sheet is substantially identical with the optical sheet of exemplary 10, therefore, by omission describing in further detail about similar elements.

See Figure 36 A, 36B, 36C and 36D, light control film 2530 comprises multiple prism pattern 2512, multiple diffusing member 2535 and organic layer 2534.

Diffusing member 2535 is arranged between adjacent prism pattern, to carry out diffusion to light.

In the present embodiment, diffusing member 2535 comprises multiple hemispherical concave depressions 2536.

The lower surface of the side of prism pattern 2512, the bottom surface of diffused section 2535 and organic layer 2534 can limit multiple air duct 2540.

exemplary 12

Figure 37 A is the skeleton view of the optical sheet shown according to exemplary 12 of the present invention.Figure 37 B and 37D is the image of the optical sheet shown according to another embodiment of the invention.In the present embodiment, except diffusing member, optical sheet is substantially identical with the optical sheet of exemplary 5, therefore, by omission describing in further detail about similar elements.

See Figure 37 A, 37B and 37C, light control film 2550 comprises multiple prism pattern 2552, multiple diffused section 2565 and organic layer 2554.

Diffused section 2565 is arranged between prism pattern 2552 adjacent one another are, to carry out diffusion to light.

In the present embodiment, diffused section 2565 comprises multiple pyramid jut 2516.

The lower surface of the side of prism pattern 2552, the upper surface of diffused section 2562 and organic layer 2554 can limit multiple air duct 2560.

Figure 37 D, 37E and 37F are the image of another example of the optical sheet shown according to exemplary 12 of the present invention.In the present embodiment, except diffusing member, optical sheet is substantially identical with the optical sheet of exemplary 12, therefore, by omission describing in further detail about similar elements.

See Figure 37 D, 37E and 37F, diffused section comprises the pyramid air bag be arranged between air duct adjacent one another are.

exemplary 13

Figure 38 is the skeleton view of the optical sheet shown according to exemplary 13 of the present invention.In the present embodiment, except diffusing member, optical sheet is substantially identical with the optical sheet of exemplary 12, therefore, by omission describing in further detail about similar elements.

See Figure 38, light control film 2570 comprises multiple prism pattern 2572, multiple diffused section 2585 and organic layer 2574.

Diffused section 2585 is arranged between adjacent prism pattern 2572, to carry out diffusion to light.

In the present embodiment, diffused section 2585 comprises multiple pyramid recess 2586.

The lower surface of the side of prism pattern 2572, the upper surface of diffused section 2585 and organic layer 2574 can limit multiple air duct 2580.

exemplary 14

Figure 39 A is the skeleton view of the optical sheet shown according to exemplary 14 of the present invention.Figure 39 B and 39C is the image of the optical sheet showing Figure 39 A.In the present embodiment, except diffusing member, optical sheet is substantially identical with the optical sheet of exemplary 5, therefore, by omission describing in further detail about similar elements.

See Figure 39 A, 39B and 39C, light control film 2620 comprises prism pattern 2622, multiple diffused section 2635 and organic layer 2624.

Diffused section 2635 is arranged between adjacent prism pattern 2622, to carry out diffusion to light.

In the present embodiment, diffused section 2635 comprises multiple prism-type jut 2636.

The lower surface of the side of prism pattern 2622, the upper surface of diffused section 2635 and organic layer 2624 can limit multiple air duct 2630.

Figure 39 D and 39E is the image of another example of the optical sheet shown according to exemplary 14 of the present invention.In the present embodiment, except diffusing member, optical sheet is substantially identical with the optical sheet of exemplary 14, therefore, by omission describing in further detail about similar elements.

See Figure 39 A and 39E, diffused section comprises the multiple auxiliary air channel be arranged between air duct adjacent one another are.Auxiliary air channel extends on the direction identical with air duct.Accessory channel can be triangle.

exemplary 15

Figure 40 A is the skeleton view of the optical sheet shown according to exemplary 15 of the present invention.Figure 40 B and 40C is the image of the optical sheet showing Figure 40 A.In the present embodiment, except diffusing member, optical sheet is substantially identical with the optical sheet of exemplary 14, therefore, omits describing in further detail about similar elements.

See Figure 40 A, 40B and 40C, light control film 2620 ' comprises multiple prism pattern 2622, multiple diffused section 2635 ' and organic layer 2624.

Diffused section 2635 ' is arranged between prism pattern 2622 adjacent one another are, to carry out diffusion to light.

In the present embodiment, diffused section 2635 ' comprises pyramid outshot 2636 '.

The lower surface of the side of prism pattern 2622, the upper surface of diffusion 2635 ' and organic layer 2624 can limit multiple air duct 2630.

Figure 40 D and 40E is the image of another example of the optical sheet shown according to exemplary 15 of the present invention.In the present embodiment, except diffusing member, optical sheet is substantially identical with the optical sheet of exemplary 15, therefore, omits describing in further detail about similar elements.

See Figure 40 D and 40E, diffused section comprises the auxiliary air channel be arranged between adjacent air duct.In the present embodiment, an auxiliary air channel is set between adjacent air duct.The section of auxiliary air channel is triangle.

exemplary 16

Figure 41 A is the skeleton view of the optical sheet shown according to exemplary 16 of the present invention.Figure 41 B and 41C is the image of the optical sheet showing Figure 41 A.In the present embodiment, except upper prism pattern 2242, optical sheet is substantially identical with the optical sheet of exemplary 8, therefore, by omission describing in further detail about similar elements.

See Figure 41 A, 41B and 41C, optical sheet comprises the first basement membrane 2201, light control film 2310, second basement membrane 2202 and multiple upper prism pattern 2242.

Light control film 2310 is arranged on the first basement membrane 2201, thus is included in multiple air ducts 2320 that the direction parallel with the first basement membrane 2201 arranges.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.

Upper prism pattern 2242 is arranged on the second basement membrane 2202, thus arranges on the direction that the bearing of trend with air duct 2320 intersects.Such as, the bearing of trend of upper prism pattern 2242 can be basically perpendicular to the bearing of trend of air duct 2320.In the present embodiment, upper prism pattern 2242 can comprise the material identical with prism pattern 2212.Alternatively, upper prism pattern 2242 can comprise the material different from prism pattern 2212.

According to the present embodiment, air duct 2320 and upper prism pattern 2242 are interconnected, thus can improve front face brightness.

exemplary 17

Figure 42 A is the skeleton view of the optical sheet shown according to exemplary 17 of the present invention.Figure 42 B and Figure 42 C is the image of the optical sheet showing Figure 42 A.In the present embodiment, except control light pattern 2252, optical sheet is substantially identical with the optical sheet of exemplary 11, therefore, by omission describing in further detail about similar elements.

See Figure 42 A, 42B and 42C, control light pattern 2252 is arranged on the second basement membrane 2202, thus extends on the direction intersected with air duct 2320.Such as, control light pattern 2252 and can have shape of a hoof section.

According to the present embodiment, horseshoe-shaped control light pattern 2252 is interconnected with upper prism pattern 2242, thus can improve visual angle.

exemplary 18

Figure 43 A is the skeleton view of the optical sheet shown according to exemplary 18 of the present invention.Figure 43 B and 43C is the image of the optical sheet showing Figure 43 A.In the present embodiment, except light control film 2330, optical sheet is substantially identical with the optical sheet of exemplary 16, therefore, by omission describing in further detail about similar elements.

See Figure 43 A, 43B and 43C, light control film 2330 is arranged on the first basement membrane 2202, thus is included in multiple air ducts 2340 that the direction parallel with the first basement membrane 2201 arranges.

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 upper prism pattern 2242 are interconnected, thus can improve visual angle.

exemplary 19

Figure 44 A is the skeleton view of the optical sheet shown according to exemplary 19 of the present invention.Figure 44 B and 44C is the image of the optical sheet showing Figure 44 A.In the present embodiment, except light control film 2640, optical sheet is substantially identical with the optical sheet of exemplary 11, therefore, by omission describing in further detail about similar elements.

See Figure 44 A, 44B and 44C, light control film 2640 is arranged on the first basement membrane 2201, thus is included in multiple air ducts 2650 that the direction parallel with the first basement membrane 2201 arranges.

Light control film 2640 comprises the diffused section 2655 be arranged between adjacent prism pattern 2642 further, to carry out diffusion to light.Diffused section 2655 comprises auxiliary prism 2656, and auxiliary prism 2656 extends on the direction identical with prism pattern 2642.

The optical characteristics of the optical sheet of Figure 44 A is measured relative to the bright enhancement film (BEF) of 3M company.The measurement mechanism that Pu Kang (Topcon) BM-7 instrument is used as to measure optical characteristics will be opened up.

When the front face brightness of BEF is assumed to about 100%, can see, the brightness of the optical sheet of the present embodiment is about 127.8%, thus improves brightness to a great extent.

In above embodiment, a light control film is set between two basement membranes.In another embodiment; optical sheet can comprise the second light control film further; this second light control film is arranged on the second basement membrane; thus comprise multiple air duct; the plurality of air duct and the second basement membrane arranged in parallel; optical sheet also can comprise the 3rd basement membrane, and the 3rd basement membrane is arranged on the second light control film, to protect the 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 basement membrane.

According to the present embodiment, air duct is formed in light control film, to improve the front face brightness of LCD device.In addition, the coboundary of prism pattern is not exposed to outside it, thus can prevent from occurring cut in another optical sheet.

In addition, optical sheet comprises diffused section or air bag, thus can improve the brightness uniformity of LCD device.In addition, eliminate additional diffusion disk, thus the assembling process of LCD device can be made to become simple, thus its manufacturing cost can be reduced.

exemplary 20

Figure 45 is the sectional view of the LCD device illustrated according to exemplary 20 of the present invention.

With reference to Figure 45, described LCD device comprises light source module 310, optical sheet 320 and LCD 330.

Light is supplied to optical sheet 320 by light source module 310.Light source module 310 is divided into direct-illumination type light source module or edge-illumination type light source module.

When light source module 310 is direct-illumination type light source modules, multiple light source (not shown) such as such as CCFL, FFL, LED etc. can be arranged onboard.

When light source module 310 is edge-illumination type light source modules, the light source that light source module 310 can comprise such as fluorescent light, LED etc. and the photoconduction that produced by light source are to the light guide plate (not shown) of optical sheet 320.

Optical sheet 320 is placed on light source module 310 to strengthen the optical characteristics of the light produced by light source module 310.Such as, 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, LCD device can comprise the various optical sheets of such as diffusing panel, diffusion disk, optical sheet, semi-transparent film and diaphragm etc. further.

LCD 330 is placed on optical sheet 320, makes optical transport through optical sheet 320 by liquid crystal layer between two substrates to show image.Alternatively, the passive display panels of such as electro phoretic display device can be used to replace LCD 330.

Figure 46 is the skeleton view of the optical sheet that Figure 45 is described.Figure 47 is the skeleton view of the amplification of Figure 46 ' C ' part.

With reference to Figure 46 and 47, optical sheet 320 comprises the first basement membrane 3201, temporarily adhesive coating 3210 and the second basement membrane 3202.

First basement membrane 3201 can have film shape.First basement membrane 3201 can comprise transparent synthetic resin.Such as, synthetic resin can comprise polyethylene terephthalate (PET), methacrylic resin, acrylic acid (class) resin, polycarbonate (PC) resin, alkyd resin, (gathering) vestolit etc.In the present embodiment, the first basement membrane 3201 comprises ethylene glycol terephthalate (PET).

Temporary transient adhesive coating 3210 is placed on the first basement membrane 3201 to be included in multiple groove 3212b that the direction parallel with the first basement membrane 3201 is arranged and the contact portion 3212a between adjacent groove 3212b.

Temporary transient adhesive coating 3210 comprises temporary transient sticky material.In the present embodiment, temporary transient sticky material is different from permanent adhesive materials.Permanent adhesive materials be solidification after clinging power disappear material.Even if temporary transient sticky material is the part material that clinging power is still kept from the separation of adhesion body of adhesion, thus by compacting, temporary transient sticky material is adhered to adhesion body again.

In the present embodiment, term " is temporarily adhered " and is different from term " attachment " and " forever adhering "." temporarily adhere " and refer to that adhesion body is semi-permanently kept clinging power by adhering to sticker.Otherwise " attachment " and " forever adhering " refers to that clinging power only exists during the course, and after process terminates, clinging power just disappears.

Such as, temporary transient sticky material can comprise rubber resin, acrylic acid [ester] base polymer, acrylate, silicon etc.In this case, temporary transient sticky material can comprise the auxiliary agent of such as ester rubber, phenolics etc. and the low molecular weight material of such as castor oil, polyisobutylene etc. further.In the present embodiment, when temporary transient adhesive coating 3210 is temporarily adhered to the second basement membrane 3202, because temporary transient sticky material has high clinging power, temporary transient adhesive coating 3210 therefore may be not easy to remove from the second basement membrane 3202.

In the present embodiment, temporary transient sticky material 3210 and the first basement membrane 3201 are integrally formed.

Second basement membrane 3202 is temporarily adhered to the contact portion 3210 of temporary transient adhesive coating 3210 to form multiple air duct 3220 between groove 3212b and the lower surface of the second basement membrane 3202.Groove 3212b defines the side surface of air duct 3220, and the lower surface of the 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 air duct 3220, right-angle triangle, the shape such as trapezoidal.In another embodiment, each in air duct 3220 can have such as polygon, the shape of a hoof, semicircle, circular prismatic shapes.

In the present embodiment, the second basement membrane 3202 has identical material with the first basement membrane 3201.

Temporary transient adhesive coating 3210 comprises the multiple prism pattern 3212 limited by groove 3212b.In the present embodiment, the upper part of prism pattern 3212 is removed to form contact portion 3212a.Prism pattern 3212 is exposed by air duct 3220 at groove 3212b place, thus light can be refracted at the interphase place between prism pattern 3212 and air duct 3220.Thus, directed in the direction vertical with the first basement membrane 3201 from the light of the first basement membrane 3201 incidence, thus the front face brightness of LCD device can be strengthened.

Distance ' d ' between the outermost part of groove 3212b and the second basement membrane 3202 is less than imagination height ' h ' of prism pattern 3212.

In the present embodiment, the second basement membrane 3202 is temporarily adhered on the temporary transient adhesive coating 3210 that is integrally formed with the first basement membrane 3201, to form optical sheet 320.

Figure 48,49,50 and 51 is sectional views that diagram manufactures the method for the optical sheet of Figure 17.Figure 48 illustrates the sectional view forming viscous coating 3212 ' on the first basement membrane 3201.

With reference to Figure 48, viscous coating 3212 ' is formed on the first basement membrane 3201.In the present embodiment, the temporary transient adhesive solution with high viscosity is coated on the first basement membrane 3201 to form temporary transient adhesive coating 3212 '.

Figure 49 is the sectional view that the temporary transient viscous coating 3212 ' forming Figure 48 is described.

With reference to Figure 50, form temporary transient viscous coating 3212 ' to form groove 3212b and contact portion 3212a.In the present embodiment, groove 3212b and contact portion 3212a is formed by various method such as such as roller, compacting, printing, etching etc.In the present embodiment, contact portion 3212a is parallel with the surface of the first basement membrane 3201.

Then, it is formed with groove 3212b and contact portion 3212a and the viscosity of the Photosetting photo-induced curing coating 3212 ' (as shown in figure 48) be integrally formed with the first basement membrane 3201.Such as, the viscosity of temporary transient adhesive coating 3212 ' is strengthened by drying process, heating process, exposure technology etc.In the case, exposure technology can use such as ultraviolet light, visible ray etc.In another embodiment, can perform the step of temporary transient viscous coating 3212 ' composition with the viscosity of the temporary transient viscous coating 3212 ' of enhancing simultaneously.

Figure 50 is the sectional view that formation second basement membrane 3202 is described.

With reference to Figure 50, the second basement membrane 3202 has plane surface.

In the present embodiment, primer coating (not shown) can be formed on the first surface of the second basement membrane 3202.Such as, after being coated in by the liquid resin of high viscosity on the second basement membrane 3202, primer coating can be formed by drying process, heating process, exposure technology etc.

Described primer coating comprises the organic material different from the remainder of the second basement membrane 3202, with the temporary transient clinging power of the refractive index and temporary transient adhesive coating 3212 that strengthen the second basement membrane 3202.

Figure 51 illustrates the sectional view temporarily adhered to by second basement membrane 3202 of Figure 50 on the temporary transient adhesive coating 3210 of Figure 49.

With reference to Figure 51, the second basement membrane 3202 is temporarily adhered to the contact portion 3212a of temporary transient adhesive coating 3210.In the present embodiment, temporary transient adhesive coating 3210 is to pressure-sensitive temporary transient adhesive coating.When pressing the second basement membrane 3202, the lower surface of the second basement membrane 3202 is temporarily adhered to the contact portion 3212a of temporary transient adhesive coating 3210.

In the present embodiment, pressure is only used temporarily to be adhered on temporary transient adhesive coating 3210 by the second basement membrane 3202.In another embodiment, by using pressure, the second basement membrane 3202 is temporarily adhered on temporary transient adhesive coating 3210 in advance, then the light of such as ultraviolet light is irradiated to again on temporary transient adhesive coating 3210, to strengthen the temporary transient clinging power of temporary transient adhesive coating 3210 further, thus the second basement membrane 3202 can firmly adhere on temporary transient adhesive coating 3210.When using pressure temporarily to be adhered on temporary transient adhesive coating 3210 by the second basement membrane 3202, the manufacturing process of this step may be fairly simple compared with irradiating ultraviolet light again.In addition, when irradiating ultraviolet light again, a part for ultraviolet light is disperseed by the second basement membrane 3202 thus adds energy ezpenditure.Thus, the temperature for the lamp of irradiating ultraviolet light again may raise, thus can fire hazard.

According to the present embodiment, in optical sheet 320, air duct 3220 is to strengthen the front face brightness of LCD device.In addition, the coboundary of prism pattern 3212 can not be exposed to the outside of prism pattern, thus prevents another optical sheet of swiping.

In addition, owing to still keeping the temporary transient clinging power of the contact portion 3212a of temporary transient adhesive coating 3210 after manufacturing optical sheet 320, even if thus divest a part for the second basement membrane 3202 from contact portion 3212a due to collision, also again temporarily adhere to contact portion 3212a by by the part divested by pressing the second basement membrane 3202.

In addition, the manufacturing process of optical sheet 320 may be simple, thus the manufacturing cost of optical sheet 320 can be lowered.

exemplary 21

Figure 52 is the skeleton view of the optical sheet illustrated according to exemplary 21 of the present invention.In the present embodiment, except optical waveguide layer, this optical sheet substantially with Figure 46,47,48,50 identical with the optical sheet of 51, thus any further detailed description relevant to same parts will be omitted.

With reference to Figure 52, optical sheet 320 comprises the first basement membrane 3201, optical waveguide layer 3310 and the second basement membrane 3202.

In the present embodiment, optical waveguide layer 3310 comprises photocurable resin.Optical waveguide layer 3310 comprises multiple groove 3312b and adhesion part 3312a.At this, optical waveguide layer 3310 can comprise thermoset resin, thermoplastic resin, light mould resin etc.Adhesion part 3312a is directly attached to the lower surface of the second basement membrane 3202.

Second basement membrane 3202 can have film shape.Second film 3202 comprises transparent synthetic resin.Such as, synthetic resin can comprise, methacrylic resin, acrylic acid (class) resin, polycarbonate (PC) resin, alkyd resin, (gathering) vestolit etc.In the present embodiment, the second basement membrane 3202 comprises polyethylene terephthalate (PET).

Figure 53,54,55 and 56 is the sectional views of the method that the optical sheet manufacturing Figure 52 is described.Figure 53 illustrates the sectional view forming photo-induced curing coating 3312 ' on the first basement membrane 3201.

With reference to Figure 53, the first basement membrane 3201 forms photo-induced curing coating 3312 '.In the present embodiment, photo-induced curing coating 3312 ' can comprise the material solidified by irradiating ultraviolet light.In another embodiment, heat-curable coating (not shown) can be formed on the first basement membrane 3201.

Figure 54 illustrates that the photo-induced curing coating 3312 ' to Figure 53 carries out the sectional view of composition.

With reference to Figure 54, composition is carried out to photo-induced curing coating 3312 ', to form groove 3312b and adhesion part 3312a.In the present embodiment, groove 3312b and adhesion part 3312a is formed by various method such as such as roller, pressing, printing, etching etc.In the present embodiment, the part 3312a that adheres is parallel with the surface of the first basement membrane 3201.

Figure 55 is the sectional view of the viscosity that the photo-induced curing coating 3312 ' strengthening Figure 54 is described.

With reference to Figure 55, it is formed with the viscosity of the photo-induced curing coating 3312 ' (as shown in Figure 54) of groove 3312b and adhesion part 3312a.Such as, the viscosity of photo-induced curing coating 3312 ' is strengthened by drying process, heating process, exposure technology etc.In the present embodiment, the viscosity by using ultraviolet light to strengthen photo-induced curing coating 3312 '.In the case, the step to the step of photo-induced curing coating 3312 ' composition and the viscosity of enhancing photo-induced curing coating 3312 ' can be performed simultaneously.In another embodiment, the step of the viscosity strengthening photo-induced curing coating 3312 ' can be omitted.

Figure 56 illustrates by using the photo-induced curing coating 3312 of Figure 55 " form the sectional view of the step of optical sheet.

With reference to Figure 56, the second basement membrane 3202 is attached at photo-induced curing coating 3312 " in the adhesion part 3312 of (as shown in fig. 55).In the present embodiment, photo-induced curing coating 3312 " keep mobility, thus due to photo-induced curing coating 3312 " the second basement membrane 3202 surface tension and the second basement membrane 3202 is attached at photo-induced curing coating 3312 " adhesion part 3312a on.

Then, be placed in the photo-induced curing coating 3312 between the first basement membrane 3201 and the second basement membrane 3202 " be cured, to form the optical waveguide layer 3310 be integrally formed with the first basement membrane 3201 and the second basement membrane 3202.

According to the present embodiment, optical waveguide layer 3310 and the first basement membrane 3201 and the second basement membrane 3202 are integrally formed the physical stability strengthening optical sheet.

In addition, the manufacturing process of optical sheet is simplified, thus its manufacturing cost can reduce.

exemplary 22

Figure 57 illustrates the sectional view manufactured 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 substantially with Figure 46,47,48,49,50 identical with the optical sheet of 51, thus any further describe relevant with identical parts will be omitted.

With reference to Figure 57, the first basement membrane 3201 forms temporarily adhesion coating 3212 ' (as shown in figure 48), then form temporarily adhesion coating 3212 ', to form multiple groove 322b and contact portion 3222a.

In the present embodiment, contact portion 3222a has the high surface of roughness.Such as, contact portion 3222a can have the various shapes of such as irregular convex-concave pattern, embossed pattern, outstanding pattern, concave pattern etc.

Then, the second basement membrane 3202 (as shown in figure 51) is temporarily adhered on the contact portion 3222a of temporary transient adhesive coating 3210.

According to the present embodiment, enhance the roughness of contact portion 3222a, thus the stickability between contact portion 3222a and the second basement membrane 3202 can be strengthened.

exemplary 23

Figure 58 is the sectional view of the optical sheet illustrated according to exemplary 23 of the present invention.In the present embodiment, except the activity between contact portion with the second basement membrane is combined, this optical sheet substantially with Figure 46,47,48,49,50 identical with the optical sheet of 51, thus any further describe relevant with identical parts will be omitted.

With reference to Figure 58, this optical sheet comprises the first basement membrane 3201, temporarily adhesive coating 3230 and the second basement membrane 3202.

Temporary transient adhesive coating 3230 is placed on the first basement membrane 3201 to comprise multiple groove 3232b and contact portion 3232a.Groove 3232b is arranged on the direction parallel with the first basement membrane 3201.Contact portion 3232a is formed between adjacent groove 3232b.Temporary transient adhesive coating 3230 comprises temporary transient sticky material.

Second basement membrane 3202 is temporarily adhered on contact portion 3232a to form the air grooves 3220 between groove 3232b and the second basement membrane 3202.

The contact portion 3232a of temporary transient adhesive coating 3230 and the second basement membrane 3202 can be active combinations.In the present embodiment, active combination refers to, when compression stress being applied to the central area PA of contact portion 3232a and tension stress being applied to neighboring area TA, temporary transient adhesive coating 3230 is temporarily adhered to the second basement membrane 3202.

When external impact acts on optical sheet, due to the balance of compression stress and tension stress, therefore with activity in conjunction with corresponding part Absorbable rod external impact.Thus, the connection between part 3232a and the second basement membrane 3202 can firmly be kept in touch.

Figure 59 is the sectional view of the method that the optical sheet manufacturing Figure 58 is described.

With reference to Figure 59, the first basement membrane 3201 forms 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 gives prominence to from its neighboring area TA.Such as, the second contact portion 3232a can be included in protuberance that the direction parallel with groove 3232b extend and the multiple protuberances in the discontinuous layout in the direction parallel with groove 3232b.

Then, the second basement membrane 3202 (as shown in figure 51) is temporarily adhered on temporary transient adhesive coating 3230.

According to the present embodiment, because the activity of contact portion 3232a and the second basement membrane 3202 combines, the cushion effect for external impact thus can be strengthened.

exemplary 24

Figure 60 is the sectional view of the optical sheet illustrated according to exemplary 24 of the present invention.In the present embodiment, except diffusing member, this optical sheet substantially with Figure 46,47,48,49, the optical sheet shown in 50 with 51 is identical, thus the further detailed description relevant to similar elements will be omitted.

With reference to Figure 60, this optical sheet comprises the first basement membrane 3201, temporarily adhesive coating 3240 and the second basement membrane 3202.

Temporary transient adhesive coating 3240 is placed on the first basement membrane 3201 to comprise multiple prism pattern 3242 and diffused section 3245.Prism pattern 3242 extends and has trapezoidal cross section on the direction parallel with the first basement membrane 3201, and the top of prism pattern 3242 has flat shape.Diffused section 3245 is placed between adjacent prism pattern 3242.The top of prism pattern 3242 forms contact portion 3242a, contact portion 3242a and is temporarily adhered to the second basement membrane 3202.

Inclined-plane 3242b is formed at the both sides of contact portion 3242a, thus inclined-plane 3242b guides the light from the bottom incidence of inclined-plane 3242b to frontal.

In the present embodiment, diffused section 3245 comprises multiple hemispheric teat 3246.In another embodiment, diffused section 3245 can have the various shapes of such as pyramid teat, prismatic shape teat, hemispherical concave depressions, pyramid recess, prism portion recess etc.

According to the present embodiment, this optical sheet comprises prism pattern 3242 and diffused section 3245, thus is strengthened through the front face brightness of light of optical sheet and luminance uniformity simultaneously.

exemplary 25

Figure 61 is the sectional view of the optical sheet illustrated according to exemplary 25 of the present invention.In the present embodiment, except diffusing member, this optical sheet is substantially identical with the optical sheet of Figure 60, thus any further detailed description relevant to same parts will be omitted.

With reference to Figure 61, this optical sheet comprises the first basement membrane 3201, temporarily adhesive coating 3240a and the second basement membrane 3202.

Temporary transient adhesive coating 3240a is placed on the first basement membrane 3201 to comprise multiple prism pattern 3242 and diffused section 3245a.Prism pattern 3242 extends to have trapezoid cross section in the direction parallel with the first basement membrane 3201, and the top of prism pattern 3242 has flat shape.Diffused section 3245a is placed between adjacent prism pattern 3242.The top of prism pattern 3242 forms contact portion 3242a, contact portion 3242a and is temporarily adhered to the second basement membrane 3202.

In the present embodiment, diffused section 3245a comprises multiple hemispheric recess 3246a.

exemplary embodiment 26

Figure 62 is the skeleton view of the optical sheet illustrated according to exemplary 26 of the present invention.In the present embodiment, except diffusing member, this optical sheet is substantially identical with the optical sheet of Figure 60, thus any further detailed description relevant to same parts will be omitted.

With reference to Figure 62, this optical sheet comprises the first basement membrane 3201, temporarily adhesive coating 3240b and the second basement membrane 3202.

Temporary transient adhesive coating 3240b is placed on the first basement membrane 3201 to comprise multiple prism pattern and diffused section 3245b.Prism pattern 3242 with the direction of the first basement membrane 3201 on extend that there is trapezoidal cross section, the top of prism pattern 3242 has flat shape.Diffused section 3245b is placed between adjacent prism pattern 3242.The top of prism pattern 3242 forms contact portion 3242a, contact portion 3242a and is temporarily adhered to the second basement membrane 3202.

In the present embodiment, diffused section 3245b comprises the projection 3246b of multiple pyramidal shape.

exemplary 27

Figure 63 is the skeleton view of the optical sheet illustrated according to exemplary 27 of the present invention.In the present embodiment, except diffusing member, this optical sheet is substantially identical with the optical sheet of Figure 60, thus any further detailed description relevant to same parts will be omitted.

With reference to Figure 63, this optical sheet comprises the first basement membrane 3201, temporarily adhesive coating 3240c and the second basement membrane 3202.

Temporary transient adhesive coating 3240c is placed in the first basement membrane 3201 to comprise multiple prism pattern and diffused section 3245c.Prism pattern 3242 extends to have trapezoidal cross section on the direction parallel with the first basement membrane 3201, and the top of prism pattern 3242 has flat shape.Diffused section 3245c is placed between adjacent prism pattern 3242.The top of prism pattern 3242 forms contact portion 3242a, contact portion 3242a and is temporarily adhered to the second basement membrane 3202.

In the present embodiment, diffused section 3245c comprises the recess 3246c of multiple pyramid.

exemplary 28

Figure 64 is the skeleton view of the optical sheet illustrated according to exemplary 28 of the present invention.In the present embodiment, except diffusing member, this optical sheet is substantially identical with the optical sheet of Figure 60, thus any further detailed description relevant to same parts will be omitted.

With reference to Figure 64, this optical sheet comprises the first basement membrane 3201, adhesive coating 3240d and the second basement membrane 3202.

Temporary transient adhesive coating 3240d is placed on the first basement membrane 3201 to comprise multiple prism pattern 3242 and diffused section 3245d.Prism pattern 3242 extends to have trapezoidal cross section on the direction parallel with the first basement membrane 3201, and the top of prism pattern 3242 has flat shape.Diffused section 3245d is placed between adjacent prism pattern 3242.The top of prism pattern 3242 forms contact portion 3242a, contact portion 3242a and is temporarily adhered to the second basement membrane 3202.

In the present embodiment, diffused section 3245d comprises multiple auxiliary prism pattern 3246d.

According to the present embodiment, due to 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 skeleton view of the optical sheet illustrated according to exemplary 29 of the present invention.In the present embodiment, except the quantity of auxiliary prism pattern, this optical sheet is substantially identical with the optical sheet of Figure 60, thus any further detailed description relevant to same parts will be omitted.

With reference to Figure 65, this optical sheet comprises the first basement membrane 3201, adhesive coating 3240c and the second basement membrane 3203.

Temporary transient adhesive coating 3240e is placed on the first basement membrane 3201 to comprise multiple prism pattern 3242 and diffused section 3245e.Prism pattern 3242 extends to have trapezoidal cross section on the direction parallel with the first basement membrane 3201, and the top of prism pattern 3242 has flat shape.Diffused section 3245e is placed between adjacent prism pattern 3242.The top of prism pattern 3242 forms contact portion 3242a, contact portion 3242a and is temporarily adhered to the second basement membrane 3202.

In the present embodiment, diffused section 3245e comprises multiple auxiliary prism pattern 3246e, and auxiliary prism pattern 3246e is formed between adjacent prism pattern 3242.

exemplary 30

Figure 66 is the skeleton view of the optical sheet illustrated according to exemplary 30 of the present invention.In the present embodiment, except air bag, this optical sheet substantially with Figure 46,47,48,49,50 identical with the optical sheet of 51, thus any further detailed description relevant to same parts will be omitted.

With reference to Figure 66, this optical sheet comprises the first basement membrane 3201, temporarily adhesive coating 3250 and the second basement membrane 3202.

Temporary transient adhesive coating 3250 is placed on the first basement membrane 3201 to be included in multiple groove 3252b that the direction parallel with the first basement membrane 3201 is arranged and the contact portion 3252a be arranged between adjacent groove 3252b.Temporary transient adhesive coating 3250 comprises temporary transient sticky material.

In the present embodiment, contact portion 3252a comprises multiple recess.

Second basement membrane 3202 is temporarily adhered to contact portion 3252a to comprise multiple air duct 3220 and multiple air bag 3255.Air duct 3220 is formed between the lower surface of groove 3252b and the second basement membrane 3202, and air bag 3255 is formed between the recess of contact portion 3252a and the lower surface of the second basement membrane 3202.

In the present embodiment, air bag 3255 has semisphere.Alternatively, air bag 3255 can have various shape such as such as pyramid, prismatic shape etc.

According to the present embodiment, this optical sheet comprises air bag 3255 to increase the region be diffused through the light of this optical sheet, thus strengthens diffusion effect.Thus, front face brightness and luminance uniformity are strengthened simultaneously.In addition, visual angle increase thus display quality can strengthen.

exemplary 31

Figure 67 is the skeleton view of the optical sheet illustrated according to exemplary 31 of the present invention.In the present embodiment, except air bag, this optical sheet is substantially identical with the optical sheet of Figure 66, thus any further detailed description relevant to same parts will be omitted.

With reference to Figure 67, this optical sheet comprises the first basement membrane 3201, temporarily adhesive coating 3256 and the second basement membrane 3202.

Temporary transient adhesive coating 3256 is placed on the first basement membrane 3201 to be included in multiple groove 3257b that the direction parallel with the first basement membrane 3201 is arranged and the contact portion 3257a be arranged between adjacent groove 3257b.Temporary transient adhesive coating 3256 comprises temporary transient sticky material.

In the present embodiment, contact portion 3257a comprises multiple teat 3258.

Second basement membrane 3202 is temporarily adhered to the top of the teat 3258 of the contact portion 3257a of temporary transient adhesive coating 3256 to form multiple air duct 3220 and multiple air net 3220a.Air duct 3220 is formed between the lower surface of groove 3257b and the second basement membrane 3202, and air net 3220a is formed between the recess of contact portion 3257a and the lower surface of the second basement membrane 3202.

According to the present embodiment, this optical sheet comprises air net 3220a to increase the region be diffused through the light of this optical sheet, thus strengthens diffusion effect.Thus, front face brightness and luminance uniformity are strengthened simultaneously.In addition, visual angle increases thus display quality enhancing.

exemplary 32

Figure 68 is the sectional view of the optical sheet illustrated according to exemplary 32 of the present invention.In the present embodiment, except diffusing layer, this optical sheet substantially with Figure 46,47,48,49,50 identical with the optical sheet of 51, thus any further detailed description relevant to same parts will be omitted.

With reference to Figure 68, this optical sheet comprises the first basement membrane 3201, temporarily adhesive coating 3210, second basement membrane 3202 and diffusing layer 3204.

Diffusing layer 3204 is attached to the second basement membrane 3202 to comprise multiple diffuser particles 3204a and resin 3204b.Diffuser particles 3204a is attached on the second basement membrane 3202 by resin 3204b.Such as, diffuser particles 3204a can comprise the optical transparency particle with the refractive index different from the refractive index of resin 3204b.Described optical transparency particle can be bubble.In another embodiment, diffuser particles 3202a can be placed in the second basement membrane 3202 or the first basement membrane 3201.

According to the present embodiment as above, optical sheet comprises diffusing layer 3204, thus the luminance uniformity of LCD device can be enhanced.In addition, eliminate additional diffusion disk, thus the packaging technology of LCD device can become simple, thus its manufacturing cost can reduce.

exemplary 33

Figure 69 is the skeleton view of the optical sheet illustrated according to exemplary 33 of the present invention.In the present embodiment, except the prism pattern of top, this optical sheet is substantially identical with the optical sheet of exemplary 9, thus any further detailed description relevant to same parts will be omitted.

With reference to Figure 69, this optical sheet comprises the first basement membrane 3201, adhesive coating 3210 and the second basement membrane 3203.

Second basement membrane 3203 can have film shape, and multiple prism pattern 3203a is formed at this film in shape.Second film 3203 comprises transparent synthetic resin.Such as, this synthetic resin can comprise polyethylene terephthalate (PET), methacrylic resin, acrylic acid (class) resin, polycarbonate (PC) resin, alkyd resin, (gathering) vestolit etc.In the present embodiment, the second basement membrane 3203 comprises polyethylene terephthalate (PET).

In the present embodiment, the prism pattern 3203a of the second basement membrane 3203 extends on the direction substantially vertical with the prism pattern 3212 of temporary transient adhesive coating 3210.In another embodiment, prism pattern 3203a can have the various shapes of the such as shape of a hoof, semisphere etc.

exemplary 34

Figure 70 is the skeleton view of the optical sheet illustrated according to exemplary 34 of the present invention.In the present embodiment, except the diffusing pattern of top, this optical sheet is substantially identical with the optical sheet of Figure 69, and any further detailed description relevant to same parts will be omitted.

With reference to Figure 70, this optical sheet comprises the first basement membrane 3201, adhesive coating and the second basement membrane 3204.

Second basement membrane 3204 can have film-form, and multiple top diffusing pattern 3204a is formed on this film.In the present embodiment, top diffusing pattern 3204a has horseshoe shaped section.

According to the present embodiment, the air duct 3220 by temporary transient adhesive coating 3210 strengthens front face brightness, and the top diffusing pattern 3204a by the second basement membrane 3204 highlights uniformity coefficient.In addition, visual angle is increased by air duct 3220 and top diffusing pattern 3204a.

exemplary 35

Figure 71 is the skeleton view of the optical sheet illustrated according to exemplary 35 of the present invention.In the present embodiment, except adhesive coating, this optical sheet is substantially identical with the optical sheet of Figure 69, thus any further detailed description relevant to same parts will be omitted.

With reference to Figure 71, this optical sheet comprises the first basement membrane 3201, adhesive coating 31210 and the second basement membrane 3203.

Temporary transient adhesive coating 31320 comprises multiple groove 31212 with horseshoe shaped section.Temporary transient adhesive coating 31320 is connected to the second basement membrane 3203 to form multiple air duct 31220 with horseshoe shaped section.

According to the present embodiment, the air duct 31220 by temporary transient adhesive coating 3120 highlights uniformity coefficient, and the prism pattern 3203a by the second basement membrane 3203 strengthens front face brightness.In addition, visual angle is increased by air duct 31220 and prism pattern 3203a.

exemplary 36

Figure 72 is the skeleton view of the optical sheet illustrated according to exemplary 36 of the present invention.In the present embodiment, except temporary transient adhesive coating, this optical sheet is substantially identical with the optical sheet of Figure 69, thus any further detailed description relevant to same parts will be omitted.

With reference to Figure 72, this optical sheet comprises the first basement membrane 3201, adhesive coating 3260 and the second basement membrane 3203.

Temporary transient layer 3260 is placed on the first basement membrane 3201 to comprise multiple prism pattern 3212 and auxiliary optical part 3265.Prism pattern 3212 extends to have trapezoidal cross section on the direction parallel with the first basement membrane 3201, and the top of prism pattern 3212 is planes.Auxiliary optical part 3265 is placed between adjacent prism pattern 3212.

In the present embodiment, multiple auxiliary prism pattern 3265a is formed in auxiliary optical part 3265 to strengthen from the front face brightness of the light of the lower surface incidence of optical sheet and visual angle.In another embodiment, auxiliary optical part 3265 comprises multiple teat, and multiple recesses etc. are to strengthen the luminance uniformity from the light of the lower surface incidence of optical sheet.Such as, teat or recess can have the various shapes of such as semisphere, pyramid etc.

exemplary 37

Figure 73 is the skeleton view of the optical sheet illustrated according to exemplary 37 of the present invention.Figure 74 is the sectional view of the optical sheet that Figure 73 is described.

With reference to Figure 73 and 74, optical sheet 320 comprises the first basement membrane 3201, first bonding coat 3260, second basement membrane 3204, second adhesive coating 3270 and the 3rd basement membrane 3205.

First basement membrane 3201 can have film-form.First basement membrane 3201 can comprise transparent synthetic resin.In the present embodiment, multiple first diffusion point 3201a is formed on the lower surface of the first basement membrane 3201.Such as, the first diffusion point 3201a can be spaced apart from each other.First diffusion point 3201a can strengthen the luminance uniformity of the light of the lower surface incidence from optical sheet, and the first basement membrane 3201 can be prevented to be subject to physical impact from outside or scraping.

First adhesive coating 3260 is placed on the first basement membrane to have sticky material.First adhesive coating 3260 comprises multiple prism pattern 3212 of arranging along direction parallel to each other and the first auxiliary optical part 3265 be placed between the first adjacent prism pattern 3212.

In the present embodiment, multiple first auxiliary prism pattern 3265a is formed in the first auxiliary optical part 3265 first to strengthen front face brightness and the visual angle of the light of the lower surface incidence from optical sheet.In another embodiment, the first auxiliary optical part 3265 can comprise multiple recess, multiple teat, multiple semi-circular cylinders etc.

Second basement membrane 3204 by the contact portion 3212a that temporarily adheres to the first prism pattern 3212 of the first temporary transient adhesive coating 3260 to form the multiple air ducts 3266 between the lower surface of the first groove 3212b of the first prism pattern 3212, the first auxiliary optical part 3265 and the second basement membrane 3204.First groove 3212b defines multiple side surfaces of the first air duct 3266, and the lower surface of the second basement membrane 3204 defines the upper surface of the first air duct 3266, and the first auxiliary optical part 3265 defines the lower surface of the first air duct 3266.

Temporary transient adhesive coating 3270 is placed on the second basement membrane 3204 to comprise multiple second prism pattern 3272 and the second auxiliary optical part 3275.Second prism pattern 3272 is arranged along direction parallel to each other.In the present embodiment, the bearing of trend of the first prism pattern 3212 can be substantially vertical with the bearing of trend of the second prism pattern 3272.In another embodiment, the first prism pattern 3212 can extend with the second prism pattern 3272 on identical direction, contrary direction, the acutangulate direction of shape etc.Second temporary transient adhesive coating 3270 comprises temporary transient sticky material.

In the present embodiment, multiple second auxiliary prism pattern 3275a is formed in the second auxiliary optical part 3275 again to strengthen front face brightness and the visual angle of the light of the lower surface incidence from the second basement membrane 3204.In another embodiment, the second auxiliary optical part 3275 can comprise multiple recess, multiple teat, multiple semi-circular cylinders etc.

3rd basement membrane 3205 is temporarily adhered to the contact portion 3272a of the second prism pattern 3272 of the second temporary transient adhesive coating 3270, to be formed at the second groove 3272b of the second prism pattern 3272, the multiple air ducts 3276 between the second auxiliary optical part 3275 and the lower surface of the 3rd basement membrane 3205.Second groove 3272b defines multiple side surfaces of the second air duct 3276, and the lower surface of the 3rd basement membrane 3205 defines the upper surface of the second air duct 3276, and the second auxiliary optical part 3275 defines the lower surface of the second air duct 3276.

In the present embodiment, multiple second diffusion point 3205a is formed on the 3rd basement membrane 3205.Such as, the second diffusion point 3205a can strengthen the luminance uniformity of the lower surface incidence from the 3rd basement membrane 3205, and the 3rd basement membrane 3205 can be protected from from the physical impact in outside and scraping.

When the prism pattern of optical sheet is exposed, need the boundary belt of high cost to protect prism pattern in transportation.Especially, when boundary belt is attached at the both sides of optical sheet, transportation cost significantly increases.In addition, can easily boundary belt be separated from optical sheet in the assembling process of backlight assembly, thus due to electrostatic, external impact etc., this optical sheet can be damaged.But, in the present embodiment, protect the first temporary transient adhesive coating 3260 and the second temporary transient adhesive coating 3270 respectively by the first basement membrane 3201 and the 3rd basement membrane 3205, thus can when there is no supplementary protection band easily delivery of optical sheet.In addition, due to the existence of the first dot pattern 3201a and second point pattern 3205a, the resistibility for outside scraping can be enhanced.

In the present embodiment, the density of the first dot pattern 3201e is less than the density of second point pattern 3205e.Alternatively, the density of the first dot pattern 3201a is equal to or greater than the density of second point pattern 3205e.

And when optical sheet only comprises a basement membrane, the thickness of basement membrane increases to protect optical sheet from the impact of external impact.Thus, when use comprises the prism assemblies of multiple optical sheet, the thickness of each optical sheet increases thus the thickness of whole optical sheet component can increase.But, multiple basement membrane 3201,3204 and 3205 stacked with the optical sheet formed according to the present embodiment, even if the thickness of basement membrane 3201,3204 and 3205 increases, but due to 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 adhesive coating, thus the defect caused due to external impact can easily be repaired.In addition, temporary transient adhesion pattern according to the present invention keeps active bonding state, thus can be strengthened the resistibility of external impact.

In addition, optical sheet comprises diffused section or air bag, thus the luminance uniformity of LCD device can strengthen.

In addition, the display quality of display device can be improved by the brightness, visual angle etc. strengthened, and the thickness of backlight assembly or LCD device can reduce, thus display device can manufacture thinner.

In addition, the manufacturing process with the optical sheet of complex function can become simple, thus the defect rate of optical sheet can reduce, and thus the manufacturing cost of optical sheet can reduce.

Be exemplary description of the present invention above, 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 when not deviating from the new instruction of the present invention and advantage in itself can carry out many amendments to exemplary.Therefore, all this amendments are included in the scope of the present invention of claim restriction.In the claims, device adds function subordinate clause and covers the structure realizing described function described herein, and covers structural equivalent and equivalent structure.Therefore, be exemplary description of the present invention above and disclosed concrete exemplary be not construed as limiting, the amendment of disclosed embodiment and other exemplary is comprised within the scope of the appended claims.The present invention is defined by the claims, and the equivalent of claim is also contained in scope of the present invention.

Claims

1. be arranged on the optical sheet in the light guide plate of backlight assembly, comprise:

Basement membrane, in described basement membrane, light is incident from downside;

Multiple prism pattern, outstanding with separated from one another on described basement membrane, thus strengthen the front face brightness from the light of the downside incidence of described basement membrane; And

Diffusing member, to be arranged between adjacent described prism pattern and to have the diffusing surface parallel with described basement membrane in the similar face being positioned at described basement membrane with prism pattern, described diffusing member comprises multiple diffusion point, described diffusion point can strengthen the brightness uniformity of the light of the downside incidence from described basement membrane, each diffusion point in wherein said multiple diffusion point includes recess formed thereon

Wherein, the surface of the surface of each described prism pattern and described diffusion point forms cut or crack, to strengthen the brightness uniformity of described optical sheet, visual angle and half-power angle.

2. optical sheet as claimed in claim 1, wherein said recess comprises semisphere, semielliptical shape or polygonal pyramid shape.

3. optical sheet as claimed in claim 1, the material of wherein said diffusing member is identical with the material of described prism pattern.

4. optical sheet as claimed in claim 1, the height of wherein said diffusing surface is lower than the height of described prism pattern.

5. optical sheet as claimed in claim 1, comprises further:

Be arranged on the auxiliary diffusing member in auxiliary diffusive regions, described auxiliary diffusive regions is limited between the diffusive regions corresponding to described diffusing member and the prism district corresponding to described prism pattern, to make described auxiliary diffusing member, there is the material identical with described diffusing member with described prism pattern, and described auxiliary diffusing member and described prism pattern and described diffusing member are integrally formed, thus reflect the light be incident in it or reflect.

6. optical sheet as claimed in claim 5, wherein said auxiliary diffusing member has the curve form extended along the direction parallel with described prism pattern.

7. optical sheet as claimed in claim 1, the cross sectional shape of each prism pattern in wherein said multiple prism pattern has 3 to 32 limits.

8. optical sheet as claimed in claim 7, the comparatively downside being parallel to described basement membrane of each prism pattern in wherein said multiple prism pattern has trapezoidal shape, pentagon shaped or heptagon shape.

9. optical sheet as claimed in claim 7, the cross section of each prism pattern in wherein said multiple prism pattern is isosceles triangle, and the drift angle of described isosceles triangle is about 1 degree to about 179 degree.

10. optical sheet as claimed in claim 1, wherein, when observing from vertical view, the center arrangement triangularity of adjacent diffusion point.

11. optical sheets as claimed in claim 1, wherein, when observing from vertical view, the center arrangement of adjacent diffusion point is orthogonal.

12. 1 kinds are arranged on the optical sheet in the light guide plate of backlight assembly, comprise:

Diffusing member, is arranged on the top of each prism pattern, and described diffusing member comprises multiple diffusion groove extended on the direction parallel with described prism pattern, and described diffusion groove strengthens the brightness uniformity from the light of the downside incidence of described basement membrane,

Wherein, the surface of each described prism pattern forms cut or crack, to strengthen the brightness uniformity of described optical sheet, visual angle and half-power angle.

13. 1 kinds are arranged on the optical sheet in the light guide plate of backlight assembly, comprise:

Basement membrane, it comprises prism district, diffusive regions and auxiliary diffusive regions;

Multiple prism pattern, it is configured to spaced and has rectangular shape facing with each other on described basement membrane;

Diffusing member, be arranged in 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 the multiple diffusion points be positioned on described diffusing surface; And

Auxiliary diffusing member, be arranged in described auxiliary diffusive regions to have the material identical with described diffusing member with described prism pattern, 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, to reflect the light through its incidence or to reflect

14. optical sheets as claimed in claim 13, wherein said auxiliary diffusing member has the curve form extended along the direction parallel with described prism pattern, and described auxiliary diffusing member comprises the multiple auxiliary diffusion point be positioned on described auxiliary diffusing surface.

15. optical sheets as claimed in claim 14, each auxiliary diffusion point in wherein said multiple auxiliary diffusion point includes multiple hemispherical jut.