CN209231659U

CN209231659U - Liquid crystal display laminating film and LCD backlight mould group

Info

Publication number: CN209231659U
Application number: CN201822266552.3U
Authority: CN
Inventors: 王清; 潘家鑫; 张宪锋; 许世峰; 孙亮; 刁全利; 胡祥发
Original assignee: CCS (SHANGHAI) FUNCTIONAL FILMS INDUSTRY CO LTD
Current assignee: Kaixinsen Shanghai Functional Film Industry Co ltd
Priority date: 2018-12-27
Filing date: 2018-12-27
Publication date: 2019-08-09
Anticipated expiration: 2028-12-27

Abstract

The utility model discloses liquid crystal display laminating film and LCD backlight mould groups.The liquid crystal display laminating film includes: first structure tunic and the second structure tunic from bottom to top, and the first structure tunic includes the first basement membrane, the first prism layer and back coating, and first prism layer is consecutively arranged to form by multiple first prisms；First prism layer is arranged in the first basement membrane upper surface；The lower surface of the first basement membrane is arranged in back coating；The second structure tunic includes the second basement membrane and the second prism layer, and second prism layer is consecutively arranged to form by multiple second prisms；Second prism layer is arranged in the second basement membrane upper surface；The lower surface of second basement membrane is provided with composite layer；Contain PBMA or PMMA microballon in the composite layer；First prism is bonded by the composite layer with second basement membrane.For the utility model under the premise of ensuring that brightness reaches liquid crystal display product requirement, shielding reaches requirement, it is ensured that without interference free from glare, visual effect is up to standard.

Description

Adhesive film for liquid crystal display and liquid crystal display backlight module

Technical Field

The utility model relates to a LCD is with laminating membrane and LCD backlight unit.

Background

With the popularization of TFT-LCD liquid crystal display technology, the demand of backlight module and related optical film is increasing. The previously adopted 4-piece diaphragm framework of downward diffusion, 90-degree light increasing, 0-degree light increasing and upward diffusion is gradually replaced by three or even two diaphragms. With the increasing of liquid crystal size, the stiffness requirement becomes high, products are continuously thinned, and the assembly requirement of assembly lines on membranes is easy, DOP (brightness enhancement + diffusion) lamination films and POP (brightness enhancement + diffusion) lamination films are also appeared in the market, but the application range is limited due to the fact that DOP is low in brightness and cannot adapt to the use of a plurality of high-resolution liquid crystal screens in the prior art, the existing POP products are poor in shielding performance, easy to scratch and incapable of directly contacting with the liquid crystal screens, covering membranes such as diffusion membranes must be added, the product cost is high, the brightness is affected, and the optical lamination membranes capable of improving the brightness and ensuring the shielding performance and the adaptability of the liquid crystal screens are needed to be solved in the industry.

One of the technical schemes of the existing POP laminating film is that two mutually vertical high-transmittance prisms are laminated together, although the brightness is high, because the two high-transmittance prisms are easy to interfere, poor in shielding performance and not scratch-resistant, a diffusion type protection plate needs to be added between the POP laminating film and a liquid crystal screen, the brightness is obviously reduced, and the production and assembly yield is reduced due to the fact that the two high-transmittance prisms are not scratch-resistant and poor in shielding performance, so that the POP laminating film is high in cost and cannot be widely applied.

The other scheme is that protective films are added on the front, the back and the upper and the lower parts of the two structural layers of the POP prism in the laminating process, so that the problem of easy scratching in the manufacturing process is solved, the production and assembly yield is improved, however, the poor interference resistance cannot be directly contacted with the liquid crystal screen, a diffusion protective sheet still needs to be added between the liquid crystal screens, the manufacturing process cost is also improved due to the addition of the protective film, the cost of the whole scheme is still higher, and the fundamental problem is not solved.

The third solution is the application mode of single-layer membrane. In order to save cost, two ways of intensifying light are adopted: the lower intensifying adopts (high-transmittance or high-fog) intensifying, the upper intensifying adopts small-space (16-25 micrometers) intensifying in order to solve the interference problem, and when the small-space intensifying is cut, different angles are required to be turned according to the matching property with the liquid crystal screen, generally 3-8 degrees, so that not only is the material loss increased and the cost is increased, but also the work of replacing the liquid crystal screen to verify the matching property is complicated, and the lead-in period and the cost are prolonged; in addition, the small-spacing light enhancement has low cost due to the small structure and low luminance, and the high-refractive-index resin is required to be selected to improve the luminance, and the small-spacing structure has poor scratch resistance, so that the production and assembly yield is low; in addition, the poor shielding performance of a single piece of intensifying film, particularly a small-distance intensifying product with the upper surface contacting the liquid crystal screen, can be clearly seen by slight deformation; when the film is applied to large size, the single film is insufficient in stiffness and easy to wrinkle, and the application to large size is limited; in addition, the risk of poor manufacturing process is increased due to the fact that the two membranes are respectively cut and assembled, and the loss is increased due to the fact that the rework rate is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the deficiencies in the prior art and providing a LCD is with laminating membrane and LCD backlight unit that shielding nature is good.

In order to achieve the above object, the utility model discloses a following technical scheme realizes:

the adhesive film for a liquid crystal display is characterized by comprising, from bottom to top:

the first structural layer film comprises a first base film, a first prism layer and a back coating layer, wherein the first prism layer is formed by continuously arranging a plurality of first prisms; the first prism layer is arranged on the upper surface of the first base film; the back coating is arranged on the lower surface of the first base film;

the second structure layer film comprises a second base film and a second prism layer, and the second prism layer is formed by continuously arranging a plurality of second prisms; the second prism layer is arranged on the upper surface of the second base film;

the lower surface of the second base film is provided with a composite adhesive layer; the composite glue layer contains PBMA or PMMA microbeads; the first prism is attached to the second base film through the composite adhesive layer.

According to an embodiment of the present invention, the first prism has three edges, including two first bottom edges and one first top edge; the first top edge protrudes out of the first base film; the distance between the first top edges of two adjacent first prisms is 60-70 micrometers; the first prism layer further comprises a first prism substrate, the two first bottom edges are arranged on the first prism substrate, and the first prism substrate are integrally formed; the cross section of the first prism is an isosceles triangle.

According to an embodiment of the invention, in the cross-section of the first prism, the apex angle a is 88-92 degrees and/or the apex angle B of the second prism is 89-93 degrees; or in the cross section of the second prism, the top of the peak of the apex angle A is a fillet with the radius of 0-5 microns.

According to an embodiment of the present invention, the second prism has three edges, including two second bottom edges and one second top edge; the second top edge protrudes out of the second base film; the distance between the second top edges of two adjacent second prisms is 25-70 micrometers; the second prism layer further comprises a second prism substrate, the two second bottom edges are arranged on the second prism substrate, and the second prism substrate are integrally formed; the cross section of the second prism is an isosceles triangle.

According to an embodiment of the present invention, the haze of the composite adhesive layer is 20% to 60%.

According to an embodiment of the present invention, PMMA microbeads or PBMA microbeads are dispersed in the composite glue layer, and the PMMA microbeads or PBMA microbeads make the haze of the composite glue layer reach 20% -60%, or,

the composite adhesive layer adopts a microstructure forming method to enable the haze of the composite adhesive layer to reach 20% -60%; or,

micro beads and spherical particles are dispersed in the composite adhesive layer, and the micro beads are PMMA micro beads or PBMA micro beads; the haze of the composite adhesive layer is up to 20% -60% due to the microbeads and the spherical particles; or

Spherical particles are dispersed in the composite adhesive layer, and the haze of the composite adhesive layer is up to 20% -60% by adopting a microstructure forming method.

According to an embodiment of the present invention, the second prism layer is made of a resin material, or;

the second prism layer is made of resin material, and spherical particles are dispersed in the resin.

According to an embodiment of the present invention, the spherical particles are selected from one or more of kaolin, aluminum hydroxide, magnesium hydroxide or powdered calcium carbonate.

According to an embodiment of the invention, the spherical particles have a particle size of 0.1-1 micrometer.

According to an embodiment of the present invention, the first prism has a first top edge and the second prism has a second top edge; and an included angle C between the overlooking projection line of the first top edge and the overlooking projection line of the second top edge is not a 90-degree angle.

According to an embodiment of the present invention, the first prism has a first top edge and the second prism has a second top edge; and the included angle C between the top-view projection line of the first top edge and the top-view projection line of the second top edge is 45-85 degrees or 95-135 degrees.

According to an embodiment of the present invention, the first prism has a first top edge and the second prism has a second top edge; the depth of the first top edge inserted into the composite adhesive layer is 0.5-2 microns.

According to an embodiment of the present invention, the first prism has a first top edge and the second prism has a second top edge; along the length direction of the second top edges, the height of the second top edges is changed, and the height difference is 1.5-3 micrometers; the first prisms are straight prisms or high-low prisms, the height of each prism on the extension line of the prism is unchanged, and the adjacent prisms are the same in height and are the straight prisms or the prisms with different heights.

According to an embodiment of the present invention, the back coating component comprises by mass:

9% -12% of 6-pipe aliphatic polyurethane acrylic prepolymer; 3-6% of aliphatic polyurethane acrylic prepolymer or 4-3% of aliphatic polyurethane acrylic prepolymer; 6% -9% of reactive diluent; 1.2 to 2.4 percent of photoinitiator; 0.3 to 0.6 percent of dispersant; 0.3 to 0.6 percent of antistatic agent; 0.2% -4% of PBMA or PMMA micro-beads with the diameter of 3-5 microns; the rest is solvent, and the solvent is two or three of toluene, butanone and cyclohexanone.

According to the utility model discloses an embodiment, the component of first prism layer includes according to mass percent:

25% -30% of OPPEA; 10-15% of epoxy acrylate prepolymer; 10% -15% of EOEOEA; BPA (EO)10DA 25% -30%; 3% -5% of hydroxyethyl acrylate; 2% -6% of a photoinitiator; 1 to 3 percent of flatting agent.

According to the utility model discloses an embodiment, the component of compound glue film includes according to mass percent: 6-8% of 2-functional aliphatic polyurethane acrylic prepolymer; 2% -4% of 4-membered aliphatic polyurethane acrylic prepolymer; 3% -5% of acryloyl morpholine; 0.2 to 0.4 percent of methacrylic acid phosphate; 1% -2% of HDDA; 0.8 to 1.6 percent of photoinitiator; 0.5% -2% of PBMA micro-beads or PMMA micro-beads with the diameter of 3-5 microns; the balance is solvent, and the solvent is one or two of butanone and toluene; or,

the composite glue layer comprises the following components in percentage by mass: 6-8% of 2-functional aliphatic polyurethane acrylic prepolymer; 2% -4% of 4-membered aliphatic polyurethane acrylic prepolymer; 3% -5% of acryloyl morpholine; 0.2 to 0.4 percent of methacrylic acid phosphate; 1% -2% of HDDA; 0.8 to 1.6 percent of photoinitiator; 0.5% -2% of PBMA micro-beads or PMMA micro-beads with the diameter of 3-5 microns; 0.5% -1.5% of spherical particles; the balance is solvent, and the solvent is one or two of butanone and toluene.

According to the utility model discloses an embodiment, the component of compound glue film includes according to mass percent: 6-8% of 2-functional aliphatic polyurethane acrylic prepolymer; 2% -4% of 4-membered aliphatic polyurethane acrylic prepolymer; 3% -5% of acryloyl morpholine; 0.2 to 0.4 percent of methacrylic acid phosphate; 1% -2% of HDDA; 0.5 to 1.6 percent of photoinitiator; 0.2 to 0.6 percent of phosphate ester monomer; the balance is solvent, and the solvent is one or two of butanone and toluene; or,

the composite glue layer comprises the following components in percentage by mass: 6-8% of 2-functional aliphatic polyurethane acrylic prepolymer; 2% -4% of 4-membered aliphatic polyurethane acrylic prepolymer; 3% -5% of acryloyl morpholine; 0.2 to 0.4 percent of methacrylic acid phosphate; 1% -2% of HDDA; 0.5 to 1.6 percent of photoinitiator; 0.2 to 0.6 percent of phosphate ester monomer; 0.5% -1.5% of spherical particles; the balance is solvent, and the solvent is one or two of butanone and toluene. More preferably, the composite bond lines made according to the present formulation are microstructured to achieve the desired haze.

According to the utility model discloses an embodiment, the component of second prism layer includes according to mass percent: 30% -35% of OPPEA; 10-15% of epoxy acrylate prepolymer; 5% -10% of EOEOEA; BPA (EO)20DA 5% -10%; BPA (EO)3DA 10% -15%; 5% -10% of DPHA; 3% -7% of a photoinitiator; 1-3% of a leveling agent; or

The second prism layer comprises the following components in percentage by mass: 30% -35% of OPPEA; 10-15% of epoxy acrylate prepolymer; 5% -10% of EOEOEA; BPA (EO)20DA 5% -10%; BPA (EO)3DA 10% -15%; 5% -10% of DPHA; 3% -7% of a photoinitiator; 1-3% of a leveling agent; 0.05 to 0.15 percent of spherical particles.

The backlight module of the liquid crystal display is characterized by comprising the adhesive film for the liquid crystal display.

The utility model provides a whole set of solution can effectively solve and be guaranteeing that luminance reaches under the liquid crystal display product requirement prerequisite, and the shielding nature reaches the liquid crystal display module assembly requirement, can with liquid crystal display panel glass direct contact, ensures that no interference is free from glare, looks the effect up to standard to the resistance to scraping satisfies the equipment demand, and the product deflection can satisfy jumbo size module requirement, thereby can effectively promote the application popularization of laminating product on the liquid crystal display field.

Drawings

Fig. 1 is a schematic structural diagram of a part of embodiments of the present invention of a bonding film for a liquid crystal display.

Fig. 2 is a schematic structural diagram of a first structural layer in some embodiments of the present invention.

FIG. 3 is a schematic diagram illustrating an included angle between the first top edge and the second top edge when the bonding film is viewed from above.

Fig. 4 is a schematic view of a structure of a laminating film according to some embodiments of the present invention.

Fig. 5 is a schematic structural diagram of embodiment 3, wherein the composite adhesive layer is processed by a microstructure forming method.

Fig. 6 is a schematic structural view of embodiment 7, in which spherical particles are added to the second prisms.

Fig. 7 is a schematic structural diagram of example 8, in which spherical particles and microbeads are added to the composite glue layer.

Fig. 8 is a schematic structural diagram of embodiment 9, wherein the composite adhesive layer is processed by a microstructure forming method and spherical particles are added.

Detailed Description

The second top edge spacing of the adjacent second prisms in the present invention is 25-70 microns, preferably 50-60 microns, and the specific value thereof can be selected within the range, such as 26, 30, 34, 38, 42, 46, 50, 52, 55, 58, 60, 63, 66, 68, 70 microns. The second prism has a vertex angle of 89-93 degrees, preferably 90-92 degrees, and an isosceles triangle-shaped cross section. The specific angle of the apex angle may be 89, 90, 91, 92 or 93 degrees. The top of the peak of the top corner can also adopt a round corner with the radius of 0-5 microns, preferably 2-3 microns, such as 0, 0.5, 1, 1.6, 2, 2.3, 2.6 and 3 microns. The composite film can reach proper brightness and the scratch resistance is improved.

The height of the second top edges varies along the length of the second top edges with a height difference of 1.5-3 microns, preferably no more than 2 microns, such as 1.5, 1.7, 1.9, 2.1, 2.3, 2.5, 2.7, 3 microns. The height of the second top edge can be changed regularly or irregularly, as long as the height difference is within the range. The projection line of the first top edge and the projection line of the second top edge form an included angle of 45-85 degrees or 95-135 degrees, which is not 90 degrees; preferably 69-76 degrees or 104-111 degrees; such as 69, 71, 73, 74, 75, 76 degrees or 104, 105, 106, 107, 109, 111 degrees. The size of the selected angle needs to be determined according to the matching effect of the selected angle and the matched liquid crystal screen, so that the problem of interference with the liquid crystal screen is solved, and the visual angle can be improved. In addition, a pre-rotation angle scheme is adopted, namely the second prism and/or the first prism are/is manufactured into a required angle in advance, and a line perpendicular to or parallel to the film edge is taken as a reference during pre-rotation.

The first top edge spacing of the adjacent first prisms in the present invention is 60-70 microns, preferably 60 and 70 microns, and the specific values thereof can be selected within the range, such as 60, 62, 64, 66, 68, 70 microns. The vertex angle of the first prism is 88 degrees-92 degrees, preferably 89 degrees-91 degrees, and the cross section is in the shape of an isosceles triangle; the specific angle of the apex angle may be 88, 89, 90, 91 or 92 degrees; the first prisms are straight prisms or high-low prisms, the height of each prism on the extension line of the first prism is not changed, and the heights of the adjacent prisms can be the same as the straight prisms or different from the height of the adjacent prisms.

The back coating resin of the first structural layer contains 3-5 micron PBMA or PMMA micro-beads, and an antistatic agent is added, so that the surface resistance is within 12 power of 10, the hardness is H-2H, and the problems of antistatic property and back scratch resistance of the composite membrane can be solved; in addition, the haze is continuously adjustable from 3 to 60%, preferably 3%, 15%, 18%, 20%, 24%, 30%, 34%, 40%, 45%; the requirements of different shielding properties of the composite film are met, and the requirements of different modules are met.

The composite glue layer adopts 20-60% of haze, so that the problem of shielding performance and glare of the composite film are solved.

The first prisms of the first structural film layer are inserted into the composite adhesive layer by 0.5-2 microns, the insertion depth is insufficient, the bonding force is poor, the bonding fastness is affected, and the luminance is affected if the insertion depth is too deep.

The first base film and the second base film can be transparent base materials such as PET film, PC film, PI film, PP film and the like with the surfaces being chemically treated, and the thickness is determined according to the actual application requirement, such as 36-250 micrometers, preferably 75, 100, 125, 188 micrometers.

Spherical particles can be added into the second prism structure of the second structure layer film, and the spherical particles have large optical specific surface area, so that the shielding performance is best on the premise of ensuring the brightness. The spherical particles are made of one or more powder materials of kaolin, aluminum hydroxide, magnesium hydroxide or powder calcium carbonate, preferably kaolin or powder calcium carbonate; the particle size is 0.1 to 1 micron, preferably 0.4 to 0.6 micron. Too large particle size affects the formation of structure, and too small particle size has poor shielding properties. The spherical particles are added, so that the visual angle can be improved, the shielding property and the anti-glare property can be improved on the premise of ensuring less brightness loss. After adding spherical particle in the second prism structure of second structure rete simultaneously, can suitably reduce the haze of compound glue film under guaranteeing same visual angle, shielding nature prerequisite to reduce the quantity of microballon in the glue of compound glue film, because PMMA or PBMA microballon particle diameter are big on the left and right sides, how much when quantity is more to the fastness of laminating glue have the influence, consequently the utility model discloses can improve the laminating fastness.

PMMA or PBMA microbeads are dispersed in the composite adhesive layer, the particle size is 3-5 microns, the haze is 20% -60%, and the purpose is to improve the haze of the composite adhesive to solve the problem of shielding performance and glare of the composite film. Meanwhile, spherical particles can be added, wherein the spherical particles are made of one or more powder materials of kaolin, aluminum hydroxide, magnesium hydroxide or powder calcium carbonate, and the kaolin or the powder calcium carbonate is preferred; the particle size is 0.1-1 micron, preferably 0.4-0.6 micron, the spherical particles with too large particle size cannot be complementary with PMMA & PBMA microbeads, and the shielding property is poor when the particle size is too small. Therefore, the two micro-particles are matched with each other, the shielding problem and the glare problem of the composite film are solved, the using amount of PMMA or PBMA micro-beads in the composite adhesive can be reduced, and the adhesive force of the composite adhesive is improved. Because the particle size of PMMA or PBMA micro beads is larger, the fastness of the adhesive is influenced when the amount of PMMA or PBMA micro beads is larger. In addition, after the using amount of PMMA or PBMA is reduced, the depth of the first prism inserted into the composite glue layer during the fitting is properly reduced on the premise of ensuring the same fitting fastness, so that the optical brightness can be improved.

The composite glue layer between the first structural layer film and the second structural layer film is used for manufacturing the matte effect in a micro-structure forming mode, the haze of 20-60% is achieved, and the purpose is to improve the haze of the composite glue so as to solve the problem of shielding performance and glare of the composite film. Meanwhile, spherical particles can be added to achieve 20-60% of haze, and 30-40% of haze is preferably adopted. The spherical particles are made of one or more powder materials of kaolin, aluminum hydroxide, magnesium hydroxide or powder calcium carbonate, preferably kaolin or powder calcium carbonate; the particle size is 0.1 to 1 micron, preferably 0.4 to 0.6 micron. Too large a particle diameter of the spherical particle affects the adhesion fastness, and too small a particle diameter results in poor shielding property. Therefore, the spherical particles and the matte microstructure are mutually matched, the shielding problem and the glare problem of the composite film are solved, and the haze in the process of manufacturing the matte structure can be reduced, so that the height fluctuation of the surface of the matte microstructure is reduced. Since the difference in height of the peaks and valleys of the matte structure is related to the haze, the difference in height is greater when the haze is higher, and vice versa. Therefore, the utility model can improve the adhesive force of the composite glue layer; in addition, after the haze of the matte structure is reduced, the depth of the first prism inserted into the composite adhesive layer during the fitting can be properly reduced on the premise of ensuring the same fitting fastness, so that the optical brightness can be improved.

The present invention will be described in detail with reference to the accompanying drawings:

example 1:

as shown in fig. 1, 2, and 3, the adhesive film 100 for a liquid crystal display includes a first structural layer film 110 and a second structural layer film 120 from the bottom to the top.

The first structural layer film 110 includes a first base film 111 and a first prism layer 112. The first base film 111 was a 125 micron optical grade chemically treated PET film. The first prism layer 112 includes a first prism base 119 and a plurality of first prisms 113. The plurality of first prisms 113 are arranged continuously without a space on the first prism base 119. The cross section of the first prism 113 is an isosceles triangle, and the vertex angle a is a right angle. The first prism 113 has three edges including two first bottom edges 115 and one first top edge 116. The two first base edges 115 are disposed on the first prism base 119. The height H1 of the first top edge 116 is 30 microns, and the spacing D1 of adjacent first top edges 116 is 60 microns. The first prism layer 112 is disposed on the upper surface of the first base film 111. The first prism 113 is integrally formed with a first prism base 119 disposed on an upper surface thereof. The first top ribs 116 protrude from the first base film 111.

The lower surface of the first base film 111 is provided with a back coating layer 118. The back coating 118 is UV resin and has 3-5 micron PBMA microbeads and antistatic agent dispersed therein. The surface resistance is 11 times of 10, the hardness is 2H, the haze is 3%, and the thickness is 5 micrometers.

The second structural layer film 120 includes a second base film 121 and a second prism layer 122. Second base film 121 is a 125 micron optical grade chemically treated PET film. The second prism layer 122 includes a second prism base 129 and a plurality of second prisms 123. The plurality of second prisms 123 are arranged on the second prism substrate 129 continuously without a space. A second prism layer 122 is disposed on the upper surface of the second base film 121; the cross section of the second prism 123 is an isosceles triangle, and the vertex angle B is a right angle. The second prism 123 has three edges including two second bottom edges 125 and one second top edge 126. The two second base edges 125 are disposed on the second prism substrate 129. The second top edge height H2 is 25 micrometers, and the height of the second top edge 126 varies along the length direction of the second prism 123, i.e., the direction perpendicular to the paper surface as shown in fig. 1, and in this embodiment, the height difference of the second top edge 126 is at most 2 micrometers. The spacing D2 between adjacent second top edges was 50 microns. The second prisms 123 are integrally formed with a second prism substrate 129, and the second prism substrate 129 is disposed on an upper surface of the second base film 1211. The second top ribs 126 protrude from the second base film 121.

The lower surface of the second base film 1211 is provided with a composite adhesive layer 130. The composite adhesive layer 130 is glue, and 3-5 micron PBMA microbeads are dispersed, so that 40% haze is achieved.

The first prisms 113 are attached to the second base film 121 through the composite adhesive layer 130. The first top edge is inserted into the composite adhesive layer by 0.5-2 microns. As shown in FIG. 3, the angle C formed by the projection line of the first top edge 116 and the projection line of the second top edge 126 is 76 degrees.

The back coating component of the first structural layer film comprises the following components in percentage by mass:

sartomer CN9006 (6-membered aliphatic polyurethane acrylic prepolymer) 12%; sadoma CN9008 (3-membered aliphatic polyurethane acrylic prepolymer) 6%; 4.5 percent of active diluent-TMPTA; active diluent-HDDA 4.5%; photoinitiator 1841%; 11731% of a photoinitiator; digao chemical TEGO-688 (dispersant) 0.5%; 0.3% of antistatic agent; 0.3 percent of PBMA or PMMA micro-beads with the diameter of 3 to 5 microns; the remainder is solvent, toluene, butanone and cyclohexanone in a ratio of 4:1: 1.

The first prism layer comprises the following components in percentage by mass:

30% of OPPEA; 15% of Zhanxin resin E3708 (epoxy acrylate prepolymer); EOEOEOEA 15%; BPA (EO)10DA 30%; 5% of hydroxyethyl acrylate; photoinitiator 1842%; 1% of photoinitiator TPO; gold lump chemical KEPERSURF-1577E (acrylate leveling agent) 2%.

The composite glue layer comprises the following components in percentage by mass:

sadoma CN966H90 (2-official fatty polyurethane acrylic prepolymer) 8%; rundao chemical L8112 (4-membered aliphatic polyurethane acrylic prepolymer) 4%; 5% of acryloyl morpholine; 0.2% of methacrylic acid phosphate; 1% of HDDA; 1840.8% of a photoinitiator; 11730.8% of a photoinitiator; 1.7 percent of PBMA or PMMA micro-beads with the diameter of 3 to 5 microns; the rest is solvent, the solvent is toluene and butanone, and the ratio of toluene: butanone 1: 1.

The second prism layer comprises the following components in percentage by mass:

OPPEA 35%; american chemical E3708 (epoxy acrylate prepolymer) 14%; EOEOEOEA 10%; BPA (EO)20DA 10%; BPA (EO)3DA 14%; 10% of DPHA; a photoinitiator 1843%; 2% of photoinitiator TPO; 2 percent of Pico chemical BYK-371 (reaction type organic silicon leveling agent).

Example 2

As shown in fig. 4, 2, and 3, the adhesive film 100 for a liquid crystal display includes a first structural layer film 110 and a second structural layer film 120 from the bottom to the top.

The first structural layer film 110 includes a first base film 111 and a first prism layer 112. The first base film 111 was a 125 micron optical grade chemically treated PET film. The first prism layer 112 is disposed on the upper surface of the first base film 111. The first prism layer 112 includes a first prism base 119 and a plurality of first prisms 113. The plurality of first prisms 113 are arranged continuously without a space on the first prism base 119. The cross section of the first prism 113 is an isosceles triangle, and the vertex angle a is a right angle. The first prism 113 has three edges including two first bottom edges 115 and one first top edge 116. The two first base edges 115 are disposed on the first prism base 119. The height H1 of the first top edge 116 is 30 or 35 microns. First prisms 113 having a first top edge height H1 of 30 microns are spaced apart from first prisms 113 having a first top edge height H1 of 35 microns. The spacing D1 between adjacent first top edges 116 is 70 or 60 microns. The distance D1 between two adjacent first top edges 116 with the height H1 of 30 micrometers is 60 micrometers. The distance D1 between two adjacent first top edges 116 with the height H1 of 35 microns is 70 microns. The first prisms 113 are integrally formed with a first prism substrate 119, and the first prism substrate 119 is disposed on an upper surface of the first base film 111. The first top ribs 116 protrude from the first base film 111.

The second structural layer film 120 includes a second base film 121 and a second prism layer 122. Second base film 121 is a 125 micron optical grade chemically treated PET film. The second prism layer 122 includes a second prism base 129 and a plurality of second prisms 123. A plurality of second prisms 123 are arranged on the second prism base 129. A second prism layer 122 is disposed on the upper surface of the second base film 121; the cross section of the second prism 123 is an isosceles triangle, and the vertex angle B is a fillet with the radius R of 2 microns. The second prism 123 has three edges including two second bottom edges 125 and one second top edge 126. The two second base edges 125 are disposed on the second prism substrate 129. The second top edge height H2 is 30 micrometers, and the height of the second top edge 126 varies along the length of the second prism 123, i.e., perpendicular to the plane of the paper as shown in fig. 1, and the height difference of the second top edge 126 is 2 micrometers at most. The spacing D2 between adjacent second top edges was 60 microns. The second prisms 123 are integrally formed with a second prism substrate 129, and the second prism substrate 129 is disposed on the upper surface of the second base film 121. The second top ribs 126 protrude from the second base film 121.

The lower surface of the second base film 121 is provided with a composite adhesive layer 130. The composite adhesive layer 130 is glue, and 3-5 micron PBMA microbeads are dispersed, so that 40% haze is achieved.

The first prisms 113 are attached to the second base film 121 through the composite adhesive layer 130. The first top edge is inserted into the composite adhesive layer by 0.5-2 microns. As shown in FIG. 3, the angle C between the projection line of the first top edge 116 and the projection line of the second top edge 126 is 73 degrees.

12% of Zhanxin resin E1290N (6-membered aliphatic polyurethane acrylic prepolymer); zhanxin resin E1258 (3-membered aliphatic polyurethane acrylic prepolymer) 6%; 4.5 percent of active diluent-TMPTA; active diluent-HDDA 4.5%; photoinitiator 1841%; 11731% of a photoinitiator; 0.5% of silook Silok771N (dispersant); 0.3% of antistatic agent; 0.3 percent of PBMA or PMMA micro-beads with the diameter of 3 to 5 microns; the rest is solvent which is toluene, butanone and cyclohexanone in a ratio of 4:1: 1.

The first prism layer comprises the following components in percentage by mass:

28% of OPPEA; 15% of Zhanxin resin E3708 (epoxy acrylate prepolymer); EOEOEOEA 15%; BPA (EO)10DA 30%; 5% of hydroxyethyl acrylate; a photoinitiator 1843%; 2% of photoinitiator TPO; friction energy chemical industryUV1201 (acrylate leveling agent) 2%.

8 percent of vertical chemical U-8663(2 tubes of fat polyurethane acrylic prepolymer); 3.6% of Ruan chemical L8112 (4-tube aliphatic polyurethane acrylic prepolymer); 4.8 percent of acryloyl morpholine; 0.4 percent of methacrylic acid phosphate; 1.5 percent of HDDA; 1840.8% of a photoinitiator; 11730.8% of a photoinitiator; 1.6 percent of PBMA micro-beads with the diameter of 3 to 5 microns; the rest is solvent which is toluene and butanone with the ratio of 1: 1.

OPPEA 33%; 15% of Zhanxin resin E3708 (epoxy acrylate prepolymer); EOEOEOEA 10%; BPA (EO)20DA 10%; BPA (EO)3DA 15%; 10% of DPHA; a photoinitiator 1843%; 2% of photoinitiator TPO; 2% of digao chemical TEGO2100 (reactive organosilicon leveling agent).

Example 3

As shown in fig. 5, 2, and 3, the adhesive film 100 for a liquid crystal display includes a first structural layer film 110 and a second structural layer film 120 from the bottom to the top.

The first structural layer film 110 includes a first base film 111 and a first prism layer 112. The first base film 111 was a 125 micron optical grade chemically treated PET film. The first prism layer 112 includes a first prism base 119 and a plurality of first prisms 113. The plurality of first prisms 113 are arranged continuously without a space on the first prism base 119. The cross section of the first prism 113 is an isosceles triangle, and the vertex angle a is a right angle. The first prism 113 has three edges including two first bottom edges 115 and one first top edge 116. The two first base edges 115 are disposed on the first prism base 119. First prisms 113 having a first top edge 116 height H1 of 30 or 35 microns and a first top edge height of 30 microns are spaced apart from first prisms 113 having a first top edge height of 35 microns. The spacing D1 between adjacent first top edges 116 is 70 or 60 microns. The distance D1 between two adjacent first top edges 116 with a height of 30 microns is 60 microns. The distance D1 between two adjacent first top edges 116 with a height of 35 microns is 70 microns. The first prism layer 112 is disposed on the upper surface of the first base film 111. The first prism 113 is integrally formed with a first prism base 119 disposed on an upper surface thereof. The first top ribs 116 protrude from the first base film 111.

The second structural layer film 120 includes a second base film 121 and a second prism layer 122. Second base film 121 is a 125 micron optical grade chemically treated PET film. The second prism layer 122 includes a second prism base 129 and a plurality of second prisms 123. The plurality of second prisms 123 are arranged on the second prism substrate 129 continuously without a space. A second prism layer 122 is disposed on the upper surface of the second base film 121; the cross section of the second prism 123 is an isosceles triangle, and the vertex angle B is a right angle. The second prism 123 has three edges including two second bottom edges 125 and one second top edge 126. The two second base edges 125 are disposed on the second prism substrate 129. The second top edge height H2 is 25 micrometers, and the height of the second top edge 126 varies along the length of the second prism 123, i.e., perpendicular to the plane of the paper as shown in fig. 1, and the height difference of the second top edge 126 is 2 micrometers at most. The spacing D2 between adjacent second top edges was 50 microns. The second prisms 123 are integrally formed with a second prism substrate 129, and the second prism substrate 129 is disposed on the upper surface of the second base film 121. The second top ribs 126 protrude from the second base film 121.

The lower surface of the second base film 121 is provided with a composite adhesive layer 130. The composite adhesive layer 130 is glue. As shown in fig. 5, the haze of the composite adhesive layer 130 is 40% by using a microstructure forming method.

The first prisms 113 are attached to the second base film 121 through the composite adhesive layer 130. The first top edge is inserted into the composite adhesive layer by 0.5-2 microns. The projection line of the first top edge 116 and the projection line of the second top edge 126 form an angle C of 76 degrees.

12% of Zhanxin resin E1290N (6-membered aliphatic polyurethane acrylic prepolymer); zhanxin resin E1258 (3-membered aliphatic polyurethane acrylic prepolymer) 6%; 4.5 percent of active diluent-TMPTA; active diluent-HDDA 4.5%; photoinitiator 1841%; 11731% of a photoinitiator; 0.5 percent of sartomer epoxy acrylate CN 151 (dispersant); 0.3% of antistatic agent; 0.3 percent of PBMA or PMMA micro-beads with the diameter of 3 to 5 microns; the balance of solvent, wherein the solvent is toluene, butanone and cyclohexanone, and the ratio of the solvent to the solvent is 4:1: 1.

the first prism layer comprises the following components in percentage by mass:

OPPEA 29%; american chemical ME2100 (epoxy acrylate prepolymer) 14%; EOEOEOEA 14%; BPA (EO)10DA 29%; 5% of hydroxyethyl acrylate; a photoinitiator 1843%; 3% of photoinitiator TPO; gold lump chemical KEPERSURF-1577E (acrylate leveling agent) 3 percent.

8 percent of vertical chemical U-8663(2 tubes of fat polyurethane acrylic prepolymer); rundao chemical L8112 (4-membered aliphatic polyurethane acrylic prepolymer) 4%; 4.8 percent of acryloyl morpholine; 0.4 percent of methacrylic acid phosphate; 1.5 percent of HDDA; 1840.5% of a photoinitiator; 11730.5% of a photoinitiator; photoinitiator TPO 0.4%; 0.5% of NTCADD FM30 Beijing Bai Yuan chemical company Limited (phosphate ester monomer); the rest is solvent, toluene and butanone are used as solvent, and the ratio of the solvent to the solvent is 2: 1.

OPPEA 35%; american chemical ME2100 (epoxy acrylate prepolymer) 12%; EOEOEOEA 10%; BPA (EO)20DA 10%; BPA (EO)3DA 15%; DPHA 9%; a photoinitiator 1843%; 3% of photoinitiator TPO; 3 percent of Pico chemical BYK-371 (reaction type organic silicon leveling agent).

Example 4

As shown in fig. 1 to 3, the adhesive film 100 for a liquid crystal display includes a first structural layer film 110 and a second structural layer film 120 from the bottom to the top.

The lower surface of the first base film 111 is provided with a back coating layer 118. The back coating 118 is UV resin and has 3-5 micron PBMA microbeads and antistatic agent dispersed therein. The surface resistance is 11 times of 10, the hardness is 2H, the fog is 40 percent, and the thickness is 5 microns.

The second structural layer film 120 includes a second base film 121 and a second prism layer 122. Second base film 121 is a 125 micron optical grade chemically treated PET film. The second prism layer 122 includes a second prism base 129 and a plurality of second prisms 123. A plurality of second prisms 123 are disposed on the second prism substrate 129 in a continuous non-spaced arrangement. A second prism layer 122 is disposed on the upper surface of the second base film 121; the cross section of the second prism 123 is an isosceles triangle, and the vertex angle B is a right angle. The second prism 123 has three edges including two second bottom edges 125 and one second top edge 126. The two second base edges 125 are disposed on the second prism substrate 129. The second top edge height H2 is 25 micrometers, and the height of the second top edge 126 varies along the length of the second prism 123, i.e., perpendicular to the plane of the paper as shown in fig. 1, and the height difference of the second top edge 126 is 2 micrometers at most. The spacing D2 between adjacent second top edges was 50 microns. The second prisms 123 are integrally formed with a second prism substrate 129, and the second prism substrate 129 is disposed on the upper surface of the second base film 121. The second top ribs 126 protrude from the second base film 121.

The first prisms 113 are attached to the second base film 121 through the composite adhesive layer 130. The first top edge is inserted into the composite adhesive layer by 0.5-2 microns. The included angle C between the projection line of the first top edge 116 and the projection line of the second top edge 126 is 73 degrees.

sartomer CN9006 (6-membered aliphatic polyurethane acrylic prepolymer) 12%; zhanxin resin E8210 (4-membered aliphatic polyurethane acrylic prepolymer) 6%; 4.5 percent of active diluent-TMPTA; active diluent-HDDA 4.5%; 1841.2% of a photoinitiator; 11731.2% of a photoinitiator; 0.6% of silook Silok771N (dispersant); 0.5% of antistatic agent; 3.3 percent of PBMA or PMMA micro-beads with the diameter of 3 to 5 microns; the rest is solvent which is toluene, butanone and cyclohexanone in a ratio of 3:1: 1.

The first prism layer comprises the following components in percentage by mass:

28% of OPPEA; american chemical ME2100 (epoxy acrylate prepolymer) 14.5%; EOEOEOEA 15%; BPA (EO)10DA 29.5%; 5% of hydroxyethyl acrylate; a photoinitiator 1843%; 3% of photoinitiator TPO; gold lump chemical KEPERSURF-1577E (acrylate leveling agent) 2%.

7.8 percent of vertical chemical U-8663(2 tubes of fat polyurethane acrylic prepolymer); 3.8% of Ruan chemical L8112 (4-tube aliphatic polyurethane acrylic prepolymer); 4.6 percent of acryloyl morpholine; 0.4 percent of methacrylic acid phosphate; 1.6 percent of HDDA; 1840.8% of a photoinitiator; 11730.8% of a photoinitiator; 1.8 percent of PBMA or PMMA micro-beads with the diameter of 3 to 5 microns; the balance of solvent, toluene and butanone, and the solvent ratio is 1: 1.

OPPEA 33%; american chemical ME2100 (epoxy acrylate prepolymer) 14%; EOEOEOEA 10%; BPA (EO)20DA 10%; BPA (EO)3DA 14%; 10% of DPHA; photoinitiator 1844%; 2% of photoinitiator TPO; 3% of digao chemical TEGO2100 (reactive organosilicon leveling agent).

Example 5

The first structural layer film 110 includes a first base film 111 and a first prism layer 112. The first base film 111 was a 125 micron optical grade chemically treated PET film. The first prism layer 112 includes a first prism base 119 and a plurality of first prisms 113. The plurality of first prisms 113 are arranged continuously without a space on the first prism base 119. The cross section of the first prism 113 is an isosceles triangle, and the vertex angle a is a right angle. The first prism 113 has three edges including two first bottom edges 115 and one first top edge 116. The two first base edges 115 are disposed on the first prism base 119. The height H1 of the first top edge 116 is 30 or 35 microns. First prisms 113 having a first peak height H1 of 30 microns are spaced apart from first prisms 113 having a first peak height of 35 microns. The spacing between adjacent first top edges 116 is 70 or 60 microns. The distance D1 between two adjacent first top edges 116 with a height of 30 microns is 60 microns. The distance D2 between two adjacent first top edges 116 with a height of 35 microns is 70 microns. The first prism layer 112 is disposed on the upper surface of the first base film 111. The first prism 113 is integrally formed with a first prism base 119 disposed on an upper surface thereof. The first top ribs 116 protrude from the first base film 111.

The lower surface of the first base film 111 is provided with a back coating layer 118. The back coating 118 is UV resin and has 3-5 micron PBMA microbeads and antistatic agent dispersed therein. The surface resistance is 11 times of 10, the hardness is 2H, the haze is 40%, and the thickness is 5 micrometers.

The second structural layer film 120 includes a second base film 121 and a second prism layer 122. Second base film 121 is a 125 micron optical grade chemically treated PET film. The second prism layer 122 includes a second prism base 129 and a plurality of second prisms 123. A plurality of second prisms 123 are disposed on the second prism substrate 129 in a continuous non-spaced arrangement. A second prism layer 122 is disposed on the upper surface of the second base film 121; the cross section of the second prism 123 is an isosceles triangle, and the vertex angle B is a fillet with a radius of 2 microns. The second prism 123 has three edges including two second bottom edges 125 and one second top edge 126. The two second base edges 125 are disposed on the second prism substrate 129. The second top edge height H2 is 30 micrometers, and the height of the second top edge 126 varies along the length of the second prism 123, i.e., perpendicular to the plane of the paper as shown in fig. 1, and the height difference of the second top edge 126 is 2 micrometers at most. The spacing D2 between adjacent second top edges was 60 microns. The second prisms 123 are integrally formed with a second prism substrate 129, and the second prism substrate 129 is disposed on the upper surface of the second base film 121. The second top ribs 126 protrude from the second base film 121.

The first prisms 113 are attached to the second base film 121 through the composite adhesive layer 130. The first top edge is inserted into the composite adhesive layer by 0.5-2 microns. The included angle C between the projection line of the first top edge 116 and the projection line of the second top edge 126 is 69 degrees.

sartomer CN9006 (6-membered aliphatic polyurethane acrylic prepolymer) 12%; rundao chemical L8112 (4-tube aliphatic polyurethane acrylic prepolymer) 6%; 4.5 percent of active diluent-TMPTA; active diluent-HDDA 4.5%; 1841.2% of a photoinitiator; 11731.2% of a photoinitiator; 0.6 percent of sartomer epoxy acrylate CN 151 (dispersant); 0.5% of antistatic agent; 3.3 percent of PBMA or PMMA micro-beads with the diameter of 3 to 5 microns; the balance of solvent, wherein the solvent is toluene, butanone and cyclohexanone, and the ratio of the solvent to the solvent is 3:1: 1.

the first prism layer comprises the following components in percentage by mass:

30% of OPPEA; american chemical ME2100 (epoxy acrylate prepolymer) 15%; EOEOEOEA 14%; BPA (EO)10DA 29.5%; 4.5 percent of hydroxyethyl acrylate; a photoinitiator 1843%; 2% of photoinitiator TPO; friction energy chemical industryUV1201 (acrylate leveling agent) 2%.

8 percent of vertical chemical U-8663(2 tubes of fat polyurethane acrylic prepolymer); 3.7% of Ruan chemical L8112 (4-membered aliphatic polyurethane acrylic prepolymer); 4.9 percent of acryloyl morpholine; 0.4 percent of methacrylic acid phosphate; 1.9 percent of HDDA; 1840.8% of a photoinitiator; 11730.8% of a photoinitiator; 1.7 percent of PBMA or PMMA micro-beads with the diameter of 3 to 5 microns; the balance of solvent, toluene and butanone, and the solvent ratio is 1: 1.

OPPEA 32%; 15% of Zhanxin resin E3708 (epoxy acrylate prepolymer); EOEOEOEA 10%; BPA (EO)20DA 10%; BPA (EO)3DA 15%; 10% of DPHA; photoinitiator 1844%; 2% of photoinitiator TPO; 2 percent of Pico chemical BYK-371 (reaction type organic silicon leveling agent).

Example 6

The first structural layer film 110 includes a first base film 111 and a first prism layer 112. The first base film 111 was a 125 micron optical grade chemically treated PET film. The first prism layer 112 includes a first prism base 119 and a plurality of first prisms 113. The plurality of first prisms 113 are arranged continuously without a space on the first prism base 119. The cross section of the first prism 113 is an isosceles triangle, and the vertex angle a is a right angle. The first prism 113 has three edges including two first bottom edges 115 and one first top edge 116. The two first base edges 115 are disposed on the first prism base 119. First prisms 113 having a first top edge 116 height H1 of 30 or 35 microns and a first top edge height H1 of 30 microns are spaced apart from first prisms 113 having a first top edge height of 35 microns. The spacing D1 between adjacent first top edges 116 is 70 or 60 microns. The distance D1 between two adjacent first top edges 116 with the height H1 of 30 micrometers is 60 micrometers. The distance D1 between two adjacent first top edges 116 with a height of 35 microns is 70 microns. The first prism layer 112 is disposed on the upper surface of the first base film 111, and the first prism layer 112 is disposed on the upper surface of the first base film 111. The first prism 113 is integrally formed with a first prism substrate 119 disposed on an upper surface thereof. The first top ribs 116 protrude from the first base film 111. The lower surface of the first base film 111 is provided with a back coating layer 118. The back coating 118 is UV resin and has 3-5 micron PBMA microbeads and antistatic agent dispersed therein. The surface resistance is 11 times of 10, the hardness is 2H, the haze is 40%, and the thickness is 5 micrometers.

The lower surface of the second base film 121 is provided with a composite adhesive layer 130. The composite adhesive layer 130 is glue. As shown in fig. 5, the composite adhesive layer 130 achieves 40% haze by using a microstructure forming method.

12% of Zhanxin resin E1290N (6-membered aliphatic polyurethane acrylic prepolymer); zhanxin resin E8210 (4-membered aliphatic polyurethane acrylic prepolymer) 6%; 4.5 percent of active diluent-TMPTA; active diluent-HDDA 4.5%; 1841.2% of a photoinitiator; 11731.2% of a photoinitiator; digao chemical TEGO-688 (dispersant) 0.6%; 0.5% of antistatic agent; 3.3 percent of PBMA or PMMA micro-beads with the diameter of 3 to 5 microns; the rest is solvent which is toluene, butanone and cyclohexanone in a ratio of 3:1: 1.

The first prism layer comprises the following components in percentage by mass:

OPPEA 29%; 15% of Zhanxin resin E3708 (epoxy acrylate prepolymer); EOEOEOEA 14%; BPA (EO)10DA 28%; 5% of hydroxyethyl acrylate; a photoinitiator 1843%; 3% of photoinitiator TPO; friction energy chemical industryUV1201 (acrylate leveling agent) 3%.

8 percent of vertical chemical U-8663(2 tubes of fat polyurethane acrylic prepolymer); rundao chemical L8112 (4-membered aliphatic polyurethane acrylic prepolymer) 4%; 4.8 percent of acryloyl morpholine; 0.4 percent of methacrylic acid phosphate; 1.5 percent of HDDA; 1840.5% of a photoinitiator; 11730.5% of a photoinitiator; photoinitiator TPO 0.4%; 0.5% of TANEX MAP (phosphate ester monomer) in Netherlands chemical industry; the rest is solvent, the solvent is toluene and butanone, and the ratio of the solvent is 2: 1.

OPPEA 34%; american chemical ME2100 (epoxy acrylate prepolymer) 13%; EOEOEOEA 10%;

BPA (EO)20DA 10%; BPA (EO)3DA 14%; 10% of DPHA; a photoinitiator 1843%; 3% of photoinitiator TPO; 3 percent of Pico chemical BYK-371 (reaction type organic silicon leveling agent).

Example 7

As shown in fig. 6, 2, and 3, the adhesive film 100 for a liquid crystal display includes a first structural layer film 110 and a second structural layer film 120 from the bottom to the top.

The first structural layer film 110 includes a first base film 111 and a first prism layer 112. The first base film 111 was a 125 micron optical grade chemically treated PET film. The first prism layer 112 includes a first prism base 119 and a plurality of first prisms 113. A plurality of first prisms 113 are disposed on the first prism base 119 in a continuous non-spaced arrangement. The cross section of the first prism 113 is an isosceles triangle, and the vertex angle a is a right angle. The first prism 113 has three edges including two first bottom edges 115 and one first top edge 116. The two first base edges 115 are disposed on the first prism base 119. The height H1 of the first top edge 116 is 30, and the distance D1 between adjacent first top edges 116 is 60 μm. The first prism layer 112 is disposed on an upper surface of the first base film 111, and the first prisms 113 are integrally formed with a first prism base 119 disposed on an upper surface thereof. The first top ribs 116 protrude from the first base film 111.

The second structural layer film 120 includes a second base film 121 and a second prism layer 122. Second base film 121 is a 125 micron optical grade chemically treated PET film. The second prism layer 122 includes a second prism base 129 and a plurality of second prisms 123. A plurality of second prisms 123 are disposed on the second prism substrate 129 in a continuous non-spaced arrangement. A second prism layer 122 is disposed on the upper surface of the second base film 121; the cross section of the second prism 123 is an isosceles triangle, and the vertex angle B is a right angle. The second prism 123 has three edges including two second bottom edges 125 and one second top edge 126. The two second base edges 125 are disposed on the second prism substrate 129. The second top edge height H2 is 25 micrometers, and the height of the second top edge 126 varies along the length of the second prism 123, i.e., perpendicular to the plane of the paper as shown in fig. 1, and the height difference of the second top edge 126 is 2 micrometers at most. The spacing D2 between adjacent second top edges was 50 microns. The second prisms 123 are integrally formed with a second prism substrate 129, and the second prism substrate 129 is disposed on the upper surface of the second base film 121. The second top ribs 126 protrude from the second base film 121. As shown in fig. 6, spherical particles are distributed in the second prism layer 122, and the second prism layer 122 has a desired haze due to the spherical particles. The manufacturing method comprises the following steps: adding the powder material into prism structure resin, grinding for 20-40 min with 1-3mm diameter pickaxe bead in a sand grinder to ensure particle size and spherical structure.

The lower surface of the second base film 121 is provided with a composite adhesive layer 130. The composite adhesive layer 130 is glue, and 3-5 micron PBMA microbeads are dispersed, so that 20% haze is achieved.

12% of 6-membered aliphatic polyurethane acrylic prepolymer; 6% of 3-4 parts of aliphatic polyurethane acrylic prepolymer; 4.5 percent of active diluent-TMPTA; active diluent-HDDA 4.5%; photoinitiator 1841%; 11731% of a photoinitiator; 0.5% of silook Silok771N (dispersant); 0.3% of antistatic agent; 0.3 percent of PBMA or PMMA micro-beads with the diameter of 3 to 5 microns; the rest is solvent which is toluene, butanone and cyclohexanone in a ratio of 4:1: 1.

The first prism layer comprises the following components in percentage by mass:

OPPEA 28.5%; 14.5 percent of epoxy acrylate prepolymer; EOEOEOEA 15%; BPA (EO)10DA 29%; 5% of hydroxyethyl acrylate; a photoinitiator 1843%; TPO 2%; gold lump chemical KEPERSURF-1577E (acrylate leveling agent) 3 percent.

sadoma CN966H90 (2-official fatty polyurethane acrylic prepolymer) 8%; rundao chemical E8210 (4-membered aliphatic polyurethane acrylic prepolymer) 4%; 5% of acryloyl morpholine; 0.2% of methacrylic acid phosphate; 1% of HDDA; 1840.8% of a photoinitiator; 11730.8% of a photoinitiator; 0.9 percent of PBMA or PMMA micro-beads with the diameter of 3 to 5 microns; the rest is solvent which is toluene and butanone with the ratio of 1: 1.

OPPEA 34%; 15% of Zhanxin resin E3708 (epoxy acrylate prepolymer); EOEOEOEA 9%; BPA (EO)20DA 10%; BPA (EO)3DA 14%; 10% of DPHA; a photoinitiator 1843%; 3% of photoinitiator TPO; 2% of dikegaku chemical TEGO2100 (reactive organosilicon leveling agent); 0.07 percent of kaolin.

Example 8

As shown in fig. 7, 2, and 3, the adhesive film 100 for a liquid crystal display includes a first structural layer film 110 and a second structural layer film 120 from the bottom to the top.

The first structural layer film 110 includes a first base film 111 and a first prism layer 112. The first base film 111 was a 125 micron optical grade chemically treated PET film. The first prism layer 112 includes a first prism base 119 and a plurality of first prisms 113. A plurality of first prisms 113 are arranged on the first prism base 119. The cross section of the first prism 113 is an isosceles triangle, and the vertex angle a is a right angle. The first prism 113 has three edges including two first bottom edges 115 and one first top edge 116. The two first base edges 115 are disposed on the first prism base 119. The height H1 of the first top edge 116 is 30 microns. The spacing D1 between adjacent first top edges 116 is 60 microns. The first prism layer 112 is disposed on the upper surface of the first base film 111. The first prism 113 is integrally formed with a first prism base 119 disposed on an upper surface thereof. The first top ribs 116 protrude from the first base film 111.

The lower surface of the second base film 121 is provided with a composite adhesive layer 130. As shown in fig. 7, the composite adhesive layer 130 is glue, and PBMA micro beads and spherical particles of 3-5 microns are dispersed, so as to achieve 40% haze. The manufacturing method comprises the following steps: adding the powder material into a composite glue solution (not containing PMMA or PBMA microbeads) to grind to obtain the coating liquid, grinding the powder material for 20 to 40 minutes by using pickaxe beads with the diameter of 1 to 3mm in a sand grinder to ensure the particle size and the spherical structure, and then adding PMMA or PBMA microbeads with the diameter of 3 to 5 microns to uniformly stir to obtain the coating liquid.

12% of Zhanxin resin E1290N (6-membered aliphatic polyurethane acrylic prepolymer); zhanxin resin E1258 (3-membered aliphatic polyurethane acrylic prepolymer) 6%; 4.5 percent of active diluent-TMPTA; active diluent-HDDA 4.5%; photoinitiator 1841%; 11731% of a photoinitiator; 0.5 percent of sartomer epoxy acrylate CN 151 (dispersant); 0.3% of antistatic agent; 0.3 percent of PBMA or PMMA micro-beads with the diameter of 3 to 5 microns; the rest is solvent which is toluene, butanone and cyclohexanone in a ratio of 4:1: 1.

The first prism layer comprises the following components in percentage by mass:

OPPEA 29%; 15% of Zhanxin resin E3708 (epoxy acrylate prepolymer); EOEOEOEA 14%; BPA (EO)10DA 29%; 4% of hydroxyethyl acrylate; a photoinitiator 1843%; 3% of photoinitiator TPO; friction energy chemical industryUV1201 (acrylate leveling agent) 3%.

7.8 percent of vertical chemical U-8663(2 tubes of fat polyurethane acrylic prepolymer); rundao chemical L8112 (4-membered aliphatic polyurethane acrylic prepolymer) 4%; 5% of acryloyl morpholine; 0.4 percent of methacrylic acid phosphate; 1.5 percent of HDDA; 1840.7% of a photoinitiator; 11730.8% of a photoinitiator; 0.9 percent of PBMA or PMMA micro-beads with the diameter of 3 to 5 microns; 1% of powdered calcium carbonate; the rest is solvent, the solvent is toluene and butanone, and the ratio of the solvent is 2: 1. The second prism layer comprises the following components in percentage by mass:

OPPEA 33%; american chemical ME2100 (epoxy acrylate prepolymer) 15%; EOEOEOEA 10%; BPA (EO)20DA 9%; BPA (EO)3DA 14%; 10% of DPHA; a photoinitiator 1843%; 3% of photoinitiator TPO; 3% of digao chemical TEGO2100 (reactive organosilicon leveling agent).

Example 9

As shown in fig. 8, 2, and 3, the adhesive film 100 for a liquid crystal display includes a first structural layer film 110 and a second structural layer film 120 from the bottom to the top.

The first structural layer film 110 includes a first base film 111 and a first prism layer 112. The first base film 111 was a 125 micron optical grade chemically treated PET film. The first prism layer 112 includes a first prism base 119 and a plurality of first prisms 113. A plurality of first prisms 113 are disposed on the first prism base 119 in a continuous non-spaced arrangement. The cross section of the first prism 113 is an isosceles triangle, and the vertex angle a is a right angle. The first prism 113 has three edges including two first bottom edges 115 and one first top edge 116. The two first base edges 115 are disposed on the first prism base 119. The height H1 of the first top edge 116 is 30 or 35 microns. First prisms 113 having a first peak height H1 of 30 microns are spaced apart from first prisms 113 having a first peak height of 35 microns. The spacing D1 between adjacent first top edges 116 is 70 or 60 microns. The distance D1 between two adjacent first top edges 116 with the height H1 of 30 micrometers is 60 micrometers. The distance D1 between two adjacent first top edges 116 with the height H1 of 35 microns is 70 microns. The first prism layer 112 is disposed on the upper surface of the first base film 111. The first prism 113 is integrally formed with a first prism base 119 disposed on an upper surface thereof. The first top ribs 116 protrude from the first base film 111.

The lower surface of the second base film 121 is provided with a composite adhesive layer 130. As shown in fig. 8, spherical particles are dispersed in the composite adhesive layer 130, and a microstructure forming method is adopted to achieve a haze of 40%. The manufacturing method comprises the following steps: adding the powder material into the composite glue for grinding to obtain the product, and grinding with pickaxe beads with the diameter of 1-3mm in a sand grinder for 20-40 minutes to ensure the particle size and the spherical structure.

sartomer CN9006 (6-membered aliphatic polyurethane acrylic prepolymer) 12%; sadoma CN9008 (3-membered aliphatic polyurethane acrylic prepolymer) 6%; 4.5 percent of active diluent-TMPTA; active diluent-HDDA 4.5%; photoinitiator 1841%; 11731% of a photoinitiator; 0.5 percent of sartomer epoxy acrylate CN 151 (dispersant); 0.3% of antistatic agent; 0.3 percent of PBMA or PMMA micro-beads with the diameter of 3 to 5 microns; the rest is solvent which is toluene, butanone and cyclohexanone in a ratio of 4:1: 1.

The first prism layer comprises the following components in percentage by mass:

OPPEA 29%; american chemical ME2100 (epoxy acrylate prepolymer) 14.5%; EOEOEOEA 14.5%; BPA (EO)10DA 28%; 5% of hydroxyethyl acrylate; a photoinitiator 1843%; 3% of photoinitiator TPO; gold lump chemical KEPERSURF-1577E (acrylate leveling agent) 3 percent.

sadoma CN966H90 (2-official fatty polyurethane acrylic prepolymer) 8%; rundao chemical L8112 (4-membered aliphatic polyurethane acrylic prepolymer) 4%; 4.8 percent of acryloyl morpholine; 0.4 percent of methacrylic acid phosphate; 2% of HDDA; 1840.5% of a photoinitiator; 11730.6% of a photoinitiator; photoinitiator TPO 0.4%; 0.6% of NTCADD FM30 Beijing Bai Yuan chemical company Limited (phosphate ester monomer); 0.8 percent of powdery calcium carbonate; the rest is solvent which is toluene and butanone with the ratio of 1: 1.

OPPEA 35%; 14% of a new resin E3708 (epoxy acrylate prepolymer); EOEOEOEA 9%; BPA (EO)20DA 9%; BPA (EO)3DA 15%; 10% of DPHA; a photoinitiator 1843%; 3% of photoinitiator TPO; 2 percent of Pico chemical BYK-371 (reaction type organic silicon leveling agent).

Example 10:

The first structural layer film 110 includes a first base film 111 and a first prism layer 112. The first base film 111 was a 125 micron optical grade chemically treated PET film. The first prism layer 112 includes a first prism base 119 and a plurality of first prisms 113. The plurality of first prisms 113 are arranged continuously without a space on the first prism base 119. The cross section of the first prism 113 is an isosceles triangle, and the vertex angle a is a right angle. The first prism 113 has three edges including two first bottom edges 115 and one first top edge 116. The two first base edges 115 are disposed on the first prism base 119. The height H1 of the first top edge 116 is 30 or 35 microns. First prisms 113 having a first peak height H1 of 30 microns are spaced apart from first prisms 113 having a first peak height of 35 microns. The spacing D1 between adjacent first top edges 116 is 70 or 60 microns. The distance D1 between two adjacent first top edges 116 with the height H1 of 30 micrometers is 60 micrometers. The distance D1 between two adjacent first top edges 116 with the height H1 of 35 microns is 70 microns. The first prism layer 112 is disposed on the upper surface of the first base film 111. The first prism 113 is integrally formed with a first prism base 119 disposed on an upper surface thereof. The first top ribs 116 protrude from the first base film 111.

The second structural layer film 120 includes a second base film 121 and a second prism layer 122. Second base film 121 is a 125 micron optical grade chemically treated PET film. The second prism layer 122 includes a second prism base 129 and a plurality of second prisms 123. A plurality of second prisms 123 are disposed on the second prism substrate 129 in a continuous non-spaced arrangement. A second prism layer 122 is disposed on the upper surface of the second base film 121; the cross section of the second prism 123 is an isosceles triangle, and the vertex angle B is a fillet with a radius of 3 microns. The second prism 123 has three edges including two second bottom edges 125 and one second top edge 126. The two second base edges 125 are disposed on the second prism substrate 129. The second top edge height H2 is 30 micrometers, and the height of the second top edge 126 varies along the length of the second prism 123, i.e., perpendicular to the plane of the paper as shown in fig. 1, and the height difference of the second top edge 126 is 2 micrometers at most. The spacing D2 between adjacent second top edges was 60 microns. The second prisms 123 are integrally formed with a second prism substrate 129, and the second prism substrate 129 is disposed on the upper surface of the second base film 121. The second top ribs 126 protrude from the second base film 121.

sartomer CN9006 (6-membered aliphatic polyurethane acrylic prepolymer) 12%; sadoma CN9008 (3-membered aliphatic polyurethane acrylic prepolymer) 6%; 4.5 percent of active diluent-TMPTA; active diluent-HDDA 4.5%; photoinitiator 1841%; 11731% of a photoinitiator; 0.5% of silook Silok771N (dispersant); 0.3% of antistatic agent; 0.3 percent of PBMA or PMMA micro-beads with the diameter of 3 to 5 microns; the rest is solvent, and the solvent is toluene, butanone and cyclohexanone. The solvent ratio was 4:1: 1.

The first prism layer comprises the following components in percentage by mass:

OPPEA 29%; american chemical ME2100 (epoxy acrylate prepolymer) 14%; EOEOEOEA 14%; BPA (EO)10DA 30%; 5% of hydroxyethyl acrylate; photoinitiator 1842%; 3% of photoinitiator TPO; friction energy chemical industryUV1201 (acrylate leveling agent) 3%.

7.9 percent of vertical chemical U-8663(2 tubes of fat polyurethane acrylic prepolymer); 3.8% of Ruan chemical L8112 (4-tube aliphatic polyurethane acrylic prepolymer); 4.6 percent of acryloyl morpholine; 0.3 percent of methacrylic acid phosphate; 1.6 percent of HDDA; 1840.7% of a photoinitiator; 11730.8% of a photoinitiator; the rest is solvent which is toluene and butanone. The solvent ratio was 1: 1.

The composite glue layer further comprises the following components in percentage by mass: 1.7 percent of PBMA or PMMA micro-beads with the diameter of 3 to 5 microns

OPPEA 34%; 14% of a new resin E3708 (epoxy acrylate prepolymer); EOEOEOEA 10%; BPA (EO)20DA 10%; BPA (EO)3DA 15%; DPHA 9%; a photoinitiator 1843%; 2% of photoinitiator TPO; 3 percent of Pico chemical BYK-371 (reaction type organic silicon leveling agent).

Example 11:

The first structural layer film 110 includes a first base film 111 and a first prism layer 112. The first base film 111 was a 125 micron optical grade chemically treated PET film. The first prism layer 112 includes a first prism base 119 and a plurality of first prisms 113. A plurality of first prisms 113 are disposed on the first prism base 119 in a continuous non-spaced arrangement. The cross section of the first prism 113 is an isosceles triangle, and the vertex angle a is a right angle. The first prism 113 has three edges including two first bottom edges 115 and one first top edge 116. The two first base edges 115 are disposed on the first prism base 119. The height H1 of the first top edge 116 is 30 microns, and the spacing D1 of adjacent first top edges 116 is 60 microns. The first prism layer 112 is disposed on the upper surface of the first base film 111. The first prism 113 is integrally formed with a first prism base 119 disposed on an upper surface thereof. The first top ribs 116 protrude from the first base film 111.

The lower surface of the second base film 121 is provided with a composite adhesive layer 130. The composite adhesive layer 130 is glue, and 3-5 micron PBMA microbeads are dispersed, so that 50% haze is achieved.

12% of Zhanxin resin E1290N (6-membered aliphatic polyurethane acrylic prepolymer); zhanxin resin E1258 (3-membered aliphatic polyurethane acrylic prepolymer) 6%; 4.5 percent of active diluent-TMPTA; active diluent-HDDA 4.5%; photoinitiator 1841%; 11731% of a photoinitiator; 0.5 percent of sartomer epoxy acrylate CN 151 (dispersant); 0.3% of antistatic agent; 0.3 percent of PBMA or PMMA micro-beads with the diameter of 3 to 5 microns; the rest is solvent, and the solvent is toluene, butanone and cyclohexanone. The solvent ratio was 4:1: 1.

The first prism layer comprises the following components in percentage by mass:

28% of OPPEA; american chemical ME2100 (epoxy acrylate prepolymer) 15%; EOEOEOEA 14%; BPA (EO)10DA 30%; 4.5 percent of hydroxyethyl acrylate; a photoinitiator 1843%; 2.5 percent of photoinitiator TPO; gold lump chemical KEPERSURF-1577E (acrylate leveling agent) 3 percent.

sadoma CN966H90 (2-official fatty polyurethane acrylic prepolymer) 7.8%; 3.8% of Ruan chemical L8112 (4-tube aliphatic polyurethane acrylic prepolymer); 4.9 percent of acryloyl morpholine; 0.4 percent of methacrylic acid phosphate; 1.8 percent of HDDA; 1840.7% of a photoinitiator; 11730.8% of a photoinitiator; the rest is solvent which is toluene and butanone. The solvent ratio was 1: 1.

The composite glue layer further comprises the following components in percentage by mass: 3-5 micron PBMA or PMMA micro-bead 2%

OPPEA 34%; american chemical ME2100 (epoxy acrylate prepolymer) 14%; EOEOEOEA 9%; BPA (EO)20DA 10%; BPA (EO)3DA 15%; 10% of DPHA; a photoinitiator 1843%; 3% of photoinitiator TPO; 2 percent of Pico chemical BYK-371 (reaction type organic silicon leveling agent).

Example 12:

The first structural layer film 110 includes a first base film 111 and a first prism layer 112. The first base film 111 was a 125 micron optical grade chemically treated PET film. The first prism layer 112 includes a first prism base 119 and a plurality of first prisms 113. A plurality of first prisms 113 are disposed on the first prism base 119 in a continuous non-spaced arrangement. The cross section of the first prism 113 is an isosceles triangle, and the vertex angle a is a right angle. The first prism 113 has three edges including two first bottom edges 115 and one first top edge 116. The two first base edges 115 are disposed on the first prism base 119. The height H1 of the first top edge 116 is 30 microns, and the spacing D1 of adjacent first top edges 116 is 60 microns. The first prism layer 112 is disposed on the upper surface of the first base film 111. The first prism 113 is integrally formed with a first prism substrate 119 disposed on an upper surface thereof. The first top ribs 116 protrude from the first base film 111.

The second structural layer film 120 includes a second base film 121 and a second prism layer 122. Second base film 121 is a 125 micron optical grade chemically treated PET film. The second prism layer 122 includes a second prism base 129 and a plurality of second prisms 123. A plurality of second prisms 123 are disposed on the second prism substrate 129 in a continuous non-spaced arrangement. A second prism layer 122 is disposed on the upper surface of the second base film 121; the cross section of the second prism 123 is an isosceles triangle, and the vertex angle B is a right angle. The second prism 123 has three edges including two second bottom edges 125 and one second top edge 126. The two second base edges 125 are disposed on the second prism substrate 129. The second top edge height H2 is 20 micrometers, and the height of the second top edge 126 varies along the length of the second prism 123, i.e., perpendicular to the plane of the paper as shown in fig. 1, and the height difference of the second top edge 126 is 2 micrometers at most. The spacing D2 between adjacent second top edges was 40 microns. The second prisms 123 are integrally formed with a second prism substrate 129, and the second prism substrate 129 is disposed on the upper surface of the second base film 121. The second top ribs 126 protrude from the second base film 121.

12% of Zhanxin resin E1290N (6-membered aliphatic polyurethane acrylic prepolymer); zhanxin resin E1258 (3-membered aliphatic polyurethane acrylic prepolymer) 6%; 4.5 percent of active diluent-TMPTA; active diluent-HDDA 4.5%; photoinitiator 1841%; 11731% of a photoinitiator; digao chemical TEGO-688 (dispersant) 0.5%; 0.3% of antistatic agent; 0.3 percent of PBMA or PMMA micro-beads with the diameter of 3 to 5 microns; the rest is solvent, and the solvent is toluene, butanone and cyclohexanone. The solvent ratio was 4:1: 1.

The first prism layer comprises the following components in percentage by mass:

28% of OPPEA; 14% of a new resin E3708 (epoxy acrylate prepolymer); EOEOEOEA 15%; BP A (EO)10DA 29%; 5% of hydroxyethyl acrylate; a photoinitiator 1843%; 3% of photoinitiator TPO; friction energy chemical industryUV1201 (acrylate leveling agent) 3%.

7.7 percent of vertical chemical U-8663 (2-tube aliphatic polyurethane acrylic prepolymer); 3.9% of Ruan chemical L8112 (4-tube aliphatic polyurethane acrylic prepolymer); 4.5 percent of acryloyl morpholine; 0.4 percent of methacrylic acid phosphate; 1.7 percent of HDDA; 1840.7% of a photoinitiator; 11730.8% of a photoinitiator; the rest is solvent which is toluene and butanone. The solvent ratio was 1: 1.

OPPEA 34%; american chemical ME2100 (epoxy acrylate prepolymer) 15%; EOEOEOEA 10%; BPA (EO)20DA 9%; BPA (EO)3DA 15%; DPHA 9%; a photoinitiator 1843%; 3% of photoinitiator TPO; 2% of digao chemical TEGO2100 (reactive organosilicon leveling agent).

EXAMPLES 1-2, 4-5, 7-8, 10-12 Process steps

1) A back coating is coated on the back of the first base film. Then drying at 80-130 ℃ for 30 seconds-1 minute, and then UV curing with UV brightness of 200-400 mj.

2) And then coating a first prism layer on the front side of the first base film, wherein the UV light quantity is 30-100 mj.

3) Coating composite glue on the back of the second base film, and drying at 80-130 ℃ for 30 seconds-1 minute; and then attaching the first prism layer in the step 2), and then carrying out UV curing, wherein the UV brightness is 600-800 mj.

4) And coating a second prism layer on the upper surface of the attached second base film, and then carrying out UV curing, wherein the UV brightness is 50-100mj and 300-500 mj.

Examples 3, 6, 9 process steps:

1) firstly coating a back coating on the back of a first base film, then drying at the drying temperature of 80-130 ℃ for 30 seconds-1 minute, and then carrying out UV curing with the UV brightness of 200-400 mj.

2) And coating a first prism layer on the upper surface of the first base film, and then carrying out UV curing with the UV light quantity of 30-100 mj.

3) Coating composite glue-matt on the back of the second base film, and enabling the composite glue to reach the needed haze through a microstructure forming technology; UV curing, and UV brightness is 30-100 mj. Then, attaching the first prism layer of 2); then UV curing is carried out, and the UV brightness is 600-800 mj.

4) And coating a second prism layer on the upper surface of the attached second base film, and then carrying out UV curing, wherein the UV brightness is 50-100mj + 300-500 mj.

Pre-rotation angle means that when producing second prism layer, the second base film is rectangular shape, the second apical edge of second prism and the edge of second base film set acute angle or obtuse angle contained angle in advance. If the first prism layer does not adopt the pre-rotation angle, the first top edges of the first prisms are perpendicular or parallel to the edge of the first base film. When the first prism layer is attached to the second prism layer, the edges of the first base film are aligned with the edges of the second base film, so that the first top edge and the second top edge are arranged according to an angle C (as shown in fig. 3). The first prism layer may also employ pre-rotation angles.

First, comparative example 1: the inside of the backlight is high-transmittance, 93 degrees are increased from bottom to top, and the small distance of the high fog is increased by 3 degrees

1) High penetration lower increase 93 degrees: the prism base film is a 250-micron optical-grade chemically-treated PET film; the interval between adjacent top edges is 50 micrometers, the height of the top edges is 25 micrometers, the cross section of the prism is an isosceles triangle, the vertex angle is a right angle, the top of a peak of the vertex angle is a sharp angle, the lower surface of the base film is provided with a back coating, and the haze of the back coating is 3%.

2) 3 degrees are increased on the high-fog small interval: the prism base film is a 250-micron optical-grade chemically-treated PET film; the interval between adjacent top edges is 20 micrometers, the height of the top edges is 10 micrometers, the cross section of each prism is an isosceles triangle, the vertex angle is a right angle, the top of a peak of the vertex angle is a sharp angle, the lower surface of the base film is provided with a back coating, and the haze of the back coating is 40%.

Second, comparative example 2: common POP (point of presence of oxygen) and high-transmittance diffusion are arranged in the backlight from bottom to top

1) And (3) common POP:

the second structural layer basal membrane is a 125-micron optical-grade chemically-treated PET membrane; the distance between adjacent top edges is 60 micrometers, the height of the top edges is 30 micrometers, the cross section of each prism is an isosceles triangle, the vertex angle is a right angle, and the top of a peak of the vertex angle is a sharp angle;

the back surface of the second structural layer is attached to the front surface of the first structural layer through composite glue, the composite glue does not contain microbeads and spherical particles, and a microstructure forming method is not adopted to realize haze;

the first structural layer base film is a 125-micron optical-grade chemically-treated PET film, the distance between adjacent top edges is 60 microns, straight prisms (the distance is constant), the height of each top edge is 30 microns, the cross section of each prism is an isosceles triangle, a vertex angle is a right angle, and the top of a peak at the vertex angle is a sharp angle;

and in the first structural layer, the lower surface of the base film is provided with a back coating, and the haze of the back coating is 3%.

An angle formed by extension lines of the second prism structure layer and the first prism structure layer is 90 °.

2) High-transmittance diffusion:

the haze and the light transmittance both reach 89 percent

Third, comparative example 3: the height fog is increased by 93 degrees from bottom to top in the backlight, and the height fog is increased by 3 degrees from small space

1) Increase 93 degrees under high fog: the prism base film is a 250-micron optical-grade chemically-treated PET film; the interval between adjacent apical edges of the prism structure is 50 micrometers, the apical edge height is 25 micrometers, the prism cross section is an isosceles triangle, the apex angle is a right angle, the peak top of the apex angle is a sharp angle, the lower surface of the base film is provided with a back coating, and the haze of the back coating is 40%.

2) 3 degrees are increased on the high-fog small interval: the prism base film is a 250-micron optical-grade chemically-treated PET film; the interval between adjacent top edges of the prism structure is 20 micrometers, the height of the top edges is 10 micrometers, the cross section of the prism is an isosceles triangle, the top angle is a right angle, the top of a peak of the top angle is a sharp angle, the lower surface of the base film is provided with a back coating, and the haze of the back coating is 40%.

Examples 1-3, 7-12 and comparative example 1 comparison: direct type backlight. Backlight diaphragm test architecture (from bottom to top): reflector plate, lamp pearl, diffuser plate, test diaphragm.

Examples 1-3, 7-12 and comparative example 2 compare: direct type backlight, backlight film test architecture (from bottom to top): reflector plate, lamp pearl, diffuser plate, test diaphragm.

Examples 4-6 are compared to comparative example 3: side-in backlight, backlight film test architecture (from bottom to top): reflector plate, lamp strip, light guide plate, test diaphragm.

The formula of each raw material of the utility model can be freely selected from the embodiment replacing the above in the content range, and the experiment detects that the utility model discloses the effect below the homoenergetic is realized.

Description of the detection method:

1. testing the brightness of the backlight module: and (4) lighting the backlight, placing the backlight into a testing membrane under normal working current and voltage after the backlight light source is stable, testing the 9-point luminance by using SR-3A equipment, and taking an average value.

2. Testing the visual angle of the backlight module: and (3) lighting the backlight, placing the backlight source into a test membrane after the backlight source is stable, testing the single-point luminance by using SR-3A equipment under normal working current and voltage, and testing the luminance at different angles, wherein an angle which is higher than and closest to one third of the single-point luminance is taken as a viewing angle value.

3. Backlight unit lid LCD screen back vision is imitated: the liquid crystal screen normally works at brightness, and WRGB four colors (under main white field) are observed by eyes at different angles.

4. And (3) testing the scratch resistance of the upper prism surface: the method comprises the steps of taking 40% haze back coating as a friction material, fixing the friction material on flat glass in an upward mode, placing an article to be tested on the friction material in a downward mode, enabling the prism peak direction to be perpendicular to the moving direction, placing a protective film on the back face of the article to be tested, placing a load weight on the protective film, drawing the article to be tested at a constant speed, observing under a three-wavelength lamp or a microscope, and taking the maximum weight without obvious scratches as test data.

To sum up, embodiment contrast data, the utility model provides a laminating film has following effect:

1. under DLED is shaded, compare (comparative example 1) with two intensifying, the utility model discloses an embodiment 1-12 is equal or slightly higher under the prerequisite at luminance, visual angle and scratch resistance all promote by a wide margin to do not have the interference problem.

2. Under the DLED backlight, compared with the common POP with a high-transmittance upward expansion (comparative example 2), the examples 2, 9 and 10 of the utility model are superior to the comparative example 2 in the aspects of brightness, visual angle and scratch resistance; the brightness and the scratch resistance of other comparative examples are greatly improved on the premise that the visual angle can meet the requirements of conventional products.

3. Under the ELED is shaded, and increase contrast on the high haze under the high haze (comparative example 3), the utility model discloses an example 4 and 6 are slightly greater than comparative example 3 in luminance, visual angle, and example 5 is equal with comparative example 3 luminance, and the visual angle is obviously greater than comparative example 3, and simultaneously example 4-6 have obvious promotion in the aspect of scratch resistance to do not have the interference problem.

With the popularization of TFT-LCD (thin film transistor-liquid crystal display) liquid crystal display technology, the demand of optical films for backlight modules is increasing, the requirement on stiffness is improved due to the continuous increase of the size, the whole thickness is gradually reduced, the assembly requirement is increasingly simplified and gradually automated, and the laminating film has become a great trend in the optical film industry; however, the problems that the shielding performance of the existing laminating film, particularly the POP laminating film with higher brightness, is poor, the film is easy to scratch and cannot directly contact the liquid crystal screen are not effectively solved, and the application and popularization of the laminating product are influenced; the utility model discloses technical scheme provides a whole set of solution, can effectively solve guaranteeing under the luminance reaches the liquid crystal display product requirement prerequisite basically, and the shielding nature reaches the liquid crystal display module assembly requirement, can with liquid crystal display panel glass direct contact, ensures that the noninterference does not have the glare, look to imitate up to standard to the anti scraping nature satisfies the equipment demand, and the product deflection can satisfy jumbo size module requirement, thereby can effectively promote the application promotion of laminating product in the liquid crystal display field.

The utility model provides a add microballon or spherical particle in the composite glue layer, owing to adopt suitable resin and formula combination, so the levelling nature is good for laminating fastness meet the requirements, solved conventional composite glue and added microballon or spherical particle and can lead to the poor or laminating fastness problem of worsening of levelling nature.

The utility model provides a compound glue film adopts micro-structure forming technique to reach the haze that needs, owing to chooseed for use suitable resin and formula combination, consequently can also laminate with first prism layer after the first UV solidification. The problem of conventional compound glue can't laminate with first prism smoothly because of losing viscidity after the micro-structure shaping UV solidifies is solved.

The embodiments of the present invention are only used for illustration, and do not limit the scope of the claims, and other substantially equivalent alternatives that may be conceived by those skilled in the art are within the scope of the present invention.

Claims

1. The adhesive film for a liquid crystal display is characterized by comprising, from bottom to top:

2. The bonding film for liquid crystal display according to claim 1, wherein the first prism has three edges including two first bottom edges and one first top edge; the first top edge protrudes out of the first base film; the distance between the first top edges of two adjacent first prisms is 60-70 micrometers; the first prism layer further comprises a first prism substrate, the two first bottom edges are arranged on the first prism substrate, and the first prism substrate are integrally formed; the cross section of the first prism is an isosceles triangle.

3. The adhesive film for liquid crystal display according to claim 1 or 2, wherein in the cross section of the first prism, the apex angle a is 88 to 92 degrees and/or the apex angle B of the second prism is 89 to 93 degrees; or in the cross section of the second prism, the top of the peak of the apex angle A is a fillet with the radius of 0-5 microns.

4. The bonding film for liquid crystal display according to claim 1, wherein the second prism has three edges including two second bottom edges and one second top edge; the second top edge protrudes out of the second base film; the distance between the second top edges of two adjacent second prisms is 25-70 micrometers; the second prism layer further comprises a second prism substrate, the two second bottom edges are arranged on the second prism substrate, and the second prism substrate are integrally formed; the cross section of the second prism is an isosceles triangle.

5. The laminating film for the liquid crystal display according to claim 1, wherein the haze of the composite adhesive layer is 20% to 60%.

6. The laminating film for the liquid crystal display according to claim 1, wherein PMMA micro beads or PBMA micro beads with the grain diameter of 3-5 microns are dispersed in the composite glue layer, and the PMMA micro beads or PBMA micro beads enable the haze of the composite glue layer to reach 20% -60%, or,

micro beads and spherical particles with the particle size of 3-5 microns are dispersed in the composite adhesive layer, and the micro beads are PMMA micro beads or PBMA micro beads; the haze of the composite adhesive layer is up to 20% -60% due to the microbeads and the spherical particles; or

7. The adhesive film for liquid crystal display according to claim 1, wherein the second prism layer is made of a resin material, or;

8. The adhesive film for liquid crystal displays according to claim 1, 6 or 7, wherein spherical particles are dispersed in the composite adhesive layer or the second prism layer, and the spherical particles are selected from one or more of kaolin, aluminum hydroxide, magnesium hydroxide or powdered calcium carbonate.

9. The adhesive film for liquid crystal display according to claim 8, wherein the spherical particles have a particle diameter of 0.1 to 1 μm.

10. The adhesive film for a liquid crystal display according to claim 1, wherein the first prism has a first top edge, and the second prism has a second top edge; and an included angle C between the overlooking projection line of the first top edge and the overlooking projection line of the second top edge is not a 90-degree angle.

11. The adhesive film for a liquid crystal display according to claim 10, wherein an angle C between a top-view projection line of the first top edge and a top-view projection line of the second top edge is 45 to 85 degrees or 95 to 135 degrees.

12. The adhesive film for a liquid crystal display according to claim 1, wherein the first prism has a first top edge, and the second prism has a second top edge; the depth of the first top edge inserted into the composite adhesive layer is 0.5-2 microns.

13. The adhesive film for a liquid crystal display according to claim 1, wherein the first prism has a first top edge, and the second prism has a second top edge; along the length direction of the second top edges, the height of the second top edges is changed, and the height difference is 1.5-3 micrometers; the first prisms are straight prisms or high-low prisms, the height of each prism on the extension line of the first prism is unchanged, and the adjacent prisms are the same in height and are the straight prisms or the prisms with different heights.

14. A backlight module for liquid crystal display, comprising the adhesive film for liquid crystal display according to any one of claims 1 to 13.