CN101034170A - Multi-stage light-collecting optical film and its manufacturing method - Google Patents
Multi-stage light-collecting optical film and its manufacturing method Download PDFInfo
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- CN101034170A CN101034170A CN 200610056864 CN200610056864A CN101034170A CN 101034170 A CN101034170 A CN 101034170A CN 200610056864 CN200610056864 CN 200610056864 CN 200610056864 A CN200610056864 A CN 200610056864A CN 101034170 A CN101034170 A CN 101034170A
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Abstract
一种多段式集光的光学膜片，其包括一基材薄膜及若干棱镜，所述基材薄膜为高穿透率物质，所述棱镜连结于基材薄膜上，各棱镜间连结形成阵列，且各棱镜包括至少一上棱镜元件及至少一下棱镜元件，该下棱镜元件连结基材薄膜，且下棱镜元件顶峰形成一第一顶峰角，所述上棱镜元件连结下棱镜元件的上端，且上棱镜元件顶峰形成一第二顶峰角，通过所述下棱镜元件的第一顶峰角与上棱镜元件的第二顶峰角使光线在上、下棱镜元件间的光线全反射或折射的光损降低，并通过所述上、下棱镜元件上、下连结成一体而不需通过任何界面元件连结，可以有效提升背光模块的辉度及光通量。本发明还包括用以制造上述光学膜片的方法。
A multi-stage light-collecting optical film, comprising a substrate film and a plurality of prisms, wherein the substrate film is a high-transmittance material, the prisms are connected to the substrate film, the prisms are connected to form an array, and each prism comprises at least one upper prism element and at least one lower prism element, the lower prism element is connected to the substrate film, and the apex of the lower prism element forms a first apex angle, the upper prism element is connected to the upper end of the lower prism element, and the apex of the upper prism element forms a second apex angle, the light loss caused by total reflection or refraction of light between the upper and lower prism elements is reduced by the first apex angle of the lower prism element and the second apex angle of the upper prism element, and the upper and lower prism elements are connected to form an integral whole without being connected through any interface element, so that the brightness and luminous flux of the backlight module can be effectively improved. The present invention also includes a method for manufacturing the above optical film.
Description
Technical field
The present invention relates to a kind of blooming piece of multisection type light collecting, be meant a kind of brightness enhancement film that is applied to LCD especially, and the prism microstructure that the different prism angles of multisection type are set on the optical microstructures of brightness enhancement film, use the briliancy and the luminous flux that improve brightness enhancement film.
Background technology
The topmost functional requirement of existing LCD is a high brightness, high evenness and can improve contrast.The backlight module of available liquid crystal display is if add brightness enhancement film (Brightness enhancementfilm in module; BEF) or prismatic lens (prism film), just can do not increase electric power consume and the fluorescent tube number under, and reach the functional requirement of high brightness.Prismatic lens light harvesting principle is by refraction and inner full-reflection (internal totalreflection), will be transmitted into ghost line from all directions from light guide plate (lightguide) to be concentrated to approximately ± 35 ° positive visual angle (on-axis) direction.The optical texture of existing prismatic lens, as international publication number is pct international patent application and the U.S.'s patent of invention the 6th of WO96/23649,280, technology shown in No. 063 " Brightness enhancement film ", its simple technology synoptic diagram please refer to shown in Figure 1, disclose a prismatic lens 1 in this technology, this prismatic lens 1 comprises a base material transparent membrane 2 and a last prism array 3 thereof, and this prism array 3 is made up of the first plane 3a and the second plane 3b, about 90 ° of each prism peak angle.
In addition, No. 5771328 " Light directing film having variableheight structured surface and light directing article constructed therefrom " discloses at United States Patent (USP), can eliminate optical coupled (wet-out) phenomenon by the small variation of prism peak height, in the hope of best light harvesting effect, make the audience can obtain under normal operation optimal brightness and all together the degree.The preparation technology of this prismatic lens is on the base film of a high penetration, evenly is coated with photonasty UV resin such as acrylic resin (acrylic resin), utilizes micron stamping technique and the crosslinked volume production moulding of UV again.For most of backlight modules, whenever put a slice prism agreement that contracts a film or TV play to an actor or actress and can increase by 60% briliancy, but 2 prismatic lenses with under the vertical overlapping more the hoisting module briliancy reach 120% approximately, that is, reducing power consumption and prolonging under the battery prerequisite of service time, can make the brightness of liquid crystal display equipment screen increase by 2.2 times.In the optical texture design of prismatic lens, influencing the briliancy (luminance) of module and the dependency structure parameter of luminous flux (luminous flux) comprising: the height of prism grooves angle (groove direction degree), prism structure (height of the prism structure), base film thickness (thickness of the basal film) and base material and UV glue refractive index (refractive ofthe film and UV resin) wherein have the greatest impact to luminance gain value (gain) with the prism grooves angle again.
Existing prism structure designing technique shown in Figure 1 still has the light loss of small part to produce, consult shown in Figure 2 again, when light is issued to after scattered light enters prism structure of diffusion barrier from all directions from light guide plate, can be divided into four kinds of light path runnings approximately, the incident light of first nearly 50% can be reflected and be utilized once more, shown in a district among Fig. 2; The light of second portion can increase the briliancy of 40%-70% shown in the b district among Fig. 2 by refraction and total reflection; The light of third part, enters adjacent prisms once more and is used to going into air dielectric from prismatic refraction, shown in the c district among Fig. 2; But tetrameric refract light can't enter adjacent prisms and be used, and causes light loss (light loss) shown in the d district among Fig. 2.
In addition, aspect relevant previous patent documentation, for example: United States Patent (USP) the 5th, 592, No. 332 " Renticular Lens, Surface Light Source; and Liquid Crystal Display Apparatus " discloses with upper and lower two-layer recessed or dome arc prism, with crisscross structure and the technology of vertical 90 degree, described upper and lower layer of prism separately links coupling and is difficult for, and the briliancy of backlight module is not had too big benefiting; Again, U.S.'s patent of invention the 6th, 277, No. 471 " Brightness enhancement film " discloses existing unimodal prism structure, and the backlight module brightness of available liquid crystal display and the not good problem of all neat degree are arranged equally.
In view of this, the present invention proposes a kind of prism structure of novelty, makes it reduce the light loss that produces as tetrameric d district among Fig. 2, and then can improve the briliancy and the luminous flux of backlight module.
Summary of the invention
Fundamental purpose of the present invention provides a kind of blooming piece of multisection type light collecting, wherein, base film surface in high briliancy brightness enhancement film is provided with some prismatic lenses, this prismatic lens comprises that at least one prism element of going up reaches prism element, on, following prism element parallel connection is composited, described prism element peak down forms angle, one first peak, last prism element peak forms angle, one second peak, angle, described first peak forms corresponding with angle, second peak mutually, by described angle, first peak and angle, second peak light loss of some light total reflections and refraction is reduced, and described upward prism element reaches down, and prism element fuses up and down, do not need to link, can effectively promote the briliancy and the luminous flux of backlight module by interface element.
For reaching above-mentioned purpose, the blooming piece of multisection type light collecting of the present invention, comprise a base film and some prisms, described base film is the high penetration material, and described prism is linked on the base film, and links the formation array between each prism, and each prism comprises that at least one prism element of going up reaches prism element, described down prism element links base film, and following prism element comprises a pair of prism facets down, and the described prism element of going up links down on the prism element; The described prism element of going up comprises a pair of prism facets that goes up, prism facets and the upper and lower corresponding binding of following prism facets on this, and described going up forms an angle between prism facets and following prism facets.
Described prism element peak down forms angle, one first peak, the described prism element of going up links the top of prism element down, should go up the prism element peak and form angle, one second peak, by the described angle, first peak of prism element down and the angle, second peak of last prism element, the light loss of the light that the light of light between upper and lower prism element goes out by total reflection or refraction is reduced, and connect to one and need not see through any interface element and link by described upper and lower prism element is upper and lower, can effectively promote the briliancy and the luminous flux of backlight module.
Described base film is a polyethylene terephthalate.
Described base film is a polycarbonate.
The inclined-plane axis of the following prism facets of the following prism element of described prism extends upward and intersects to form angle, one first peak.
The inclined-plane axis of the last prism facets of the last prism element of described prism extends upward and intersects to form angle, one second peak.
The peak that the following prism facets of the following prism element of described prism forms is that triangle is tip-shape.
The peak of the following prism facets of the following prism element of described prism is circular-arc.
The peak of the last prism facets of the last prism element of described prism is that triangle is tip-shape.
The peak of the last prism facets of the last prism element of described prism is circular-arc.
In on the base film of a tool high penetration molded and shaped with most prisms on described base film; Each prism comprises that prism element (containing a pair of prism facets down) is connected with on described prism element down with at least one prism element (containing a pair of prism facets that goes up) of going up; Form an angle between the corresponding prism facets of each of each upper and lower prism element.
The present invention also provides a kind of method of making the blooming piece of multisection type light collecting, comprises the following steps:
A. on a base film evenly coating with ground floor (lower floor) but hard resin-layer;
B. with the second layer (upper strata) but the scratch-resistant material comprises the nanoscale polymer-based composite is uniformly coated on the described ground floor hard resin-layer to form a lamination again; And
Molded microstructure and is solidified, is shaped to and has most microstructures (comprising prism) and respectively contain the down optical thin film of layer elements and last layer elements on described lamination.
By the blooming piece and the manufacture method thereof of multisection type light collecting of the present invention, can effectively promote the briliancy and the luminous flux of backlight module.
Description of drawings
Fig. 1 is the prism structure synoptic diagram of existing backlight module;
Fig. 2 is the lens optical reflection and refraction path figure of existing backlight module;
Fig. 3 is first embodiment of the present invention figure;
Fig. 4 (a) is that prismatic refraction light of the present invention reclaims the opticpath figure that light increases briliancy;
Fig. 4 (b) and Fig. 4 (c) converge to the opticpath figure at positive visual angle for prismatic refraction light of the present invention;
Fig. 4 (d) can't reclaim the path profile of refract light for prism of the present invention;
Fig. 5 is the optics emulation mechanism structural drawing of checking prism effect of the present invention;
Fig. 6 is the optical shaft orientation light intensity data curve map of lens optical simulation result in comparative example one of the present invention, comparative example two and the operational example one to four;
Fig. 7 is second embodiment of the present invention figure;
Fig. 8 is third embodiment of the present invention figure;
Fig. 9 is fourth embodiment of the present invention figure;
Figure 10 is fifth embodiment of the present invention figure;
Figure 11 is sixth embodiment of the present invention figure.
The main element symbol description:
1 prismatic lens, 2 base material transparent membranes
3 prism array 3a, first plane
3b second plane 4 blooming pieces
5 base films, 6 prisms
Prism facets under 61 times prism element 6a
Prism element on the prism facets 62 under the 6b
The last prism element 7b of 7a goes up prism element
The last prism element α of 8b angle
α 1 angle theta
1Angle, first peak
θ
2Second peak angle θ
3Angle, the 3rd peak
W bottom width H
1First vertical height
H
2The second vertical height ray1 incident light
A refraction point γ
1Incident angle
γ
2Refraction angle N
1Normal line vector
Ray1 refract light A refraction point
Ray2 refract light N
2Normal line vector
θ
4Angle theta
5The refraction angle
ε
1Angle ε
2The refraction angle
X1～X6 curve 20 optics emulation mechanisms
10 side direction light sources, 11 mirror surfaces
12 light guide plate, 13 reflecting plates
14 scattering points, 15 diffusion barriers
17 times prismatic lenses of prismatic lens on 16
18 light receiving surface H
3The 3rd vertical height
C point of contact, C point of contact
D tie point D tie point
The E mid point
Embodiment
Below in conjunction with accompanying drawing, describe specific embodiments of the invention in detail.
See also shown in Figure 3, first embodiment for the blooming piece 4 of multisection type light collecting of the present invention, wherein, described blooming piece 4 comprises a base film 5 and some prisms 6, base film 5 is made of a high penetration material, this base film 5 need have enough printing opacity sharpness and structural strength, be enough to be applied in specific optical articles and preferable opposing temperature and aging, be preferably polyethylene terephthalate (Polyethylene Terephthalate, PET), or polycarbonate (Polycarbonate, PC), but the material of above-listed base film material 5 discloses only for ease of the characteristic of this base film 5 is described, is not in order to limit category of the present invention.
Above-mentioned prism 6 is located on the base film 5, and 6 adjacent bindings of each prism form prism array, each prism 6 comprises prism element 62 at least one prism element 61 and down, described prism element 61 down is linked on the base film 5, and described prism element 61 down comprises a pair of prism facets 6a and 6b down, described prism facets 6a down extends upward with 6b inclined-plane axis and intersects, and makes the described peak of prism element 61 down form one first peak angle θ
1, described upward prism element 62 is linked to down the upper end of prism element 61, and prism element 62 comprises a pair of prism facets 7a of going up and 7b on this, and last prism facets 7a and 7b inclined-plane axis extend upward intersection, make prism element 62 tops form one second peak angle θ
2, and form an angle α respectively between described prism facets 6a down and 6b and last prism facets 7a and 7b, and make described prism element 62 and the following prism element 61 upper and lower one that connect to of going up, needn't see through any interface element, described first peak angle θ
1, second peak angle θ
2The scope that reaches angle α is not limit, and in the first embodiment of the present invention, is to enumerate first peak angle θ
1＞the second peak angle θ
2Be example, and go up the last prism facets 7a of prism element 62 and 7b inclined-plane axis and extend upward the peak shape that intersects to form and be not limited to the triangle pointed shape shown in Fig. 3 that last prism element 62 peak shapes also can be the shapes as circular arc (round).
The bottom width W of the following prism element 61 of above-mentioned each prism 6 is not limited, and can be same widths or width inequality, the first vertical height H of the last prism facets 7a of last prism element 62 and 7b
1The following prism facets 6a of prism element 61 and the second vertical height H of 6b under reaching
2Magnitude range do not add restriction yet, can be by the described first vertical height H
1And the second vertical height H
2Ratio allotment, and obtain different light loss control and briliancy and luminous flux control and adjust.
Please cooperate again shown in Fig. 4 a, Fig. 4 b, Fig. 4 c and Fig. 4 d, the blast principle of blooming piece 4 on actual optics functional operation that shows multisection type light collecting of the present invention, wherein, shown in Fig. 4 a, for entering prism 6 from base film 5, for following prism element 61 as incident light ray1, this incident light ray1 is by descending prism facets 6a through reflexing to down prism element 61 inside, refraction point A by following prism facets 6b is refracted to air again, knows n by Snell ' s law
1Sin γ
1=n
2Sin γ
2, n wherein
1, n
2Be respectively the refractive index of prism and air, γ
1With γ
2Be respectively incident angle and refraction angle.If prism 6 constitutes example with the acrylic resin material, n
1=1.494, air n
2=1, if the reflection ray of incident light ray1 and following prism facets 6b are along the normal line vector N that stretches refraction point A
1Angle is θ
4, the normal line vector N of refract light ray1 ' and refraction point A then
1Refraction angle θ
5=sin-1 (1.494sin θ
4), at some θ
4With the prism dimensions value, refract light ray1 ' can directly refract to outside the optical frames 4, and can't incide contiguous prism 6, thereby causes light loss.
But optical prism 4 with multisection type of the present invention, after identical incident light ray1 enters prism element 62 via following prism facets 6a reflection, then can reflect a smooth ray2 ' from the refraction point A of last prism facets 7b, if the reflection ray of incident light ray1 and the normal line vector N of last prism facets 7b to air
2Angle be ε
1, the normal line vector N of refract light ray2 ' and refraction point A '
2The refraction angle be ε
2=sin
-1(1.494sin ε
1), shown in Fig. 4 a, at some θ
4With the prism dimensions value, refract light ray2 ' folds into into adjacent prisms 6 than refract light ray1 ' downward bias, can reclaim light, and then can reach the effect that increases its briliancy and luminous flux.
For another example shown in Fig. 4 b and Fig. 4 c, in like manner can push away, the blooming piece of multisection type light collecting of the present invention, each prism 6 is via the optical prism structure of the multisection type that descends 62 of prism element 61 and last prism elements, make refract light ray2 ' can converge to positive visual angle (on-axis) direction, and can increase its briliancy and luminous flux than refract light ray1 '.
Can not dare not or would not speak up, the optical prism structural design of this kind multisection type at some ray trajectories, can't effectively reclaim, but these light also are to reclaim at traditional about 90 ° prism of prism peak angle, see Fig. 4 d.But,, really can effectively reclaim some light to increase its briliancy via blooming piece 4 structures of multisection type light collecting of the present invention based on above-mentioned explanation.
Please cooperate shown in Figure 5ly again, below be actual increase briliancy and the effect of luminous flux of the blooming piece 4 of checking multisection type light collecting of the present invention, the optics emulation of now enumerating some comparative examples and operational example is with contrast demonstration effect of the present invention, wherein:
Comparative example 1:
Comparative example 1 does not have prismatic lens to have only optics emulation diffusion sheet under for existing, and via preliminary checking of this cover software do of TracePro, its optics simulation architecture as shown in Figure 5.The optics emulation mechanism 20 of backlight module adopts side light type back light module, and side direction light source 10 is to adopt cold cathode fluorescent tube (coldcathode fluorescent lamp; CCFL) or light emitting diode (LED), light source enters light guide plate 12 (light guide plate) via mirror surface 11 (reflector), pass through the scattering point 14 (scattering dots) of reflecting plate 13 (reflector) again, in light reflected back light guide plate, prevent that light source from leaking outside, to increase the service efficiency of light, then light enters diffusion barrier 15 (diffuser sheet) so that a uniform surface light source to be provided, make the light of ejaculation more even, can't see the reflection spot shade from the front.Place a light receiving surface 18 on the diffusion barrier 15.Simulation result is shown in the curve X1 among Fig. 6, wherein the curve X1 of Fig. 6 is the graph of a relation (rectangular candela distribution plot) of the light intensity of an optical design to the visual angle, be made for the comparison of the following all embodiment of the present invention, the usefulness of contrast, and horizontal axis coordinate axis (x axle) is represented visual angle (ViewingAngle); Vertical axial coordinate (y axle) is represented the axial light intensity rate.And 0 degree view axis is made as 1 to light intensity ratio in this comparative example.
Comparative example 2:
Comparative example 2 is that the peak crest line perpendicular quadrature of two of 90 ° last prismatic lens 16 and following prismatic lenses 17 (prismsheet) places between diffusion barrier 15 and the light receiving surface 18 with existing prism facets angle, this structure is done a preliminary checking via this cover software of TracePro, via optics emulation mechanism 20 emulation of Fig. 5, simulation result is shown in the curve X2 among Fig. 6.Wherein the curve X2 of Fig. 6 is the rectangle candle light distribution plan (rectangular candela distribution plot) of an optical design, is used for being made for the usefulness of comparison of the present invention, contrast.
Operational example 1:
Operational example 1 is first operational example of the blooming piece 4 of multisection type light collecting of the present invention, wherein, and first peak angle θ
1It is 104 °; Second peak angle θ
2It is 90 °.Following prism element 61 bottom width W are 50 μ m, the first vertical height H
1/ the second vertical height H
2=1/6, the manufacture method of this prism 6 is unrestricted, and the material of selecting for use is high transparent material, and this embodiment is that its refractive index of employing acrylic resin (acrylic resin) is 1.494.6 two on the multistage prism of this embodiment is placed between diffusion barrier 15 and the light receiving surface 18 with peak crest line perpendicular quadrature, do a preliminary checking via this cover software of TracePro, and via optics emulation mechanism 20 simulating, verifyings shown in Figure 5, and simulation results is shown in the curve X3 among Fig. 6, and wherein the curve X3 of Fig. 6 is the rectangular candela distribution plot of optical design of the present invention.This shows that the axial light intensity rate that the present invention obtains is better than existing axial light intensity rate (X2).
Operational example 2:
Operational example 2 is second operational example of the blooming piece 4 of multisection type light collecting of the present invention, wherein, and first peak angle θ
1It is 104 °; Second peak angle θ
2It is 94 °.Following prism element 61 bottom width W are 50 μ m, wherein the first vertical height H
1/ the second vertical height H
2=1/6, the manufacture method of prism 6 is unrestricted, and the material of selecting for use is high transparent material, and this embodiment is that its refractive index of employing acrylic resin (acrylic resin) is 1.494.6 two on the multistage prism of this optical texture is placed between diffusion barrier 15 and the light receiving surface 18 with peak crest line perpendicular quadrature, do a preliminary checking via this cover software of TracePro, and via optics emulation mechanism shown in Figure 5 20 simulating, verifying in addition, and simulation results is shown in the curve X4 among Fig. 6, and wherein the curve X4 of Fig. 6 is the rectangle candle light distribution plan (rectangular candela distribution plot) of optical design of the present invention.
Operational example 3:
Operational example 3 is the 3rd operational example of the blooming piece 4 of multisection type light collecting of the present invention, wherein, and first peak angle θ
1It is 104 °; Second peak angle θ
2It is 94 °.Following prism element 61 bottom width W are 50 μ m, wherein the first vertical height H
1/ the second vertical height H
2=1/2, the manufacture method of prism 6 is unrestricted, and the material of selecting for use is high transparent material, and this embodiment is that its refractive index of employing acrylic resin (acrylic resin) is 1.494.6 two on the multistage prism of this optical texture is placed between diffusion barrier 15 and the light receiving surface 18 with peak crest line perpendicular quadrature, do a preliminary checking via this cover software of TracePro, and through optics emulation mechanism shown in Figure 5 20 simulating, verifying in addition, and simulation results is shown in the curve X5 among Fig. 6, and wherein the curve X5 of Fig. 6 is the rectangle candle light distribution plan (rectangularcandela distribution plot) of optical design of the present invention.
Operational example 4:
Operational example 4 is the 4th operational example of the blooming piece 4 of multisection type light collecting of the present invention, wherein, and first peak angle θ
1It is 104 °; Second peak angle θ
2It is 94 °.Following prism element 61 bottom width W are 50 μ m, wherein the first vertical height H
1/ the second vertical height H
2=2/3, the manufacture method of prism 6 is unrestricted, and the material of selecting for use is high transparent material, and this embodiment is that its refractive index of employing acrylic resin (acrylic resin) is 1.494.6 two on the multistage prism of this optical texture is placed between diffusion barrier 15 and the light receiving surface 18 with peak crest line perpendicular quadrature, do a preliminary checking via this cover software of TracePro, and through optics emulation mechanism shown in Figure 5 20 simulating, verifying in addition, and simulation results is shown in the curve X6 among Fig. 6, and wherein the curve X6 of Fig. 6 is the rectangle candle light distribution plan (rectangularcandela distribution plot) of optical design of the present invention.
Simulating, verifying data between above-listed comparative example 1, comparative example 2 and first operational example of the present invention～the 4th operational example are listed as follows with contrast now, wherein:
| Project data is other | 0 degree visual angle luminous intensity (luminous intensity) | 0 degree visual angle briliancy (luminance) ratio | Luminous flux (luminous flux) ratio |
| First comparative example | 1.0 | 1.0 | 1.0 |
| Second comparative example | 1.72 | 1.55 | 1.62 |
| First operational example | 1.85 | 1.73 | 1.89 |
| Second operational example | 1.77 | 1.65 | 1.84 |
| The 3rd operational example | 1.74 | 1.63 | 1.79 |
| The 4th operational example | 1.77 | 1.65 | 1.80 |
Annotate: the value on above-listed second comparative example, first operational example～the 4th each hurdle of operational example is to discuss with respect to first comparative example.
0 degree view axis by the blooming piece 4 that can obviously verify multisection type light collecting of the present invention among the last table result all is better than first comparative example and second comparative example to luminous intensity, 0 degree view axis to data such as briliancy and luminous fluxes, and described first peak angle θ
1And second peak angle θ
2Between value do not limited which for big which for little, wherein the illustrated embodiments state is first peak angle θ
1Greater than second peak angle θ
2Condition under, can produce best briliancy and luminous flux.
Please cooperate shown in Figure 7 again, second embodiment for the blooming piece 4 of multisection type light collecting of the present invention, wherein, show that prism 6 comprises prism element 61, prism element 62 and 63 on two, described prism element 62 and the following prism element 61 gone up is with as on shown in Figure 3, under link the structure mode and make up, last prism element 63 then comprises a pair of prism facets 8a of going up and 8b, last prism facets 8a and 8b be corresponding respectively directly be linked to described go up prism element 62 two on prism facets 7a and 7b, the described prism element 63 of going up is incorporated on the prism element 62, and form an angle α 1 between last prism facets 8a and 8b and last prism facets 7a and 7b, the inclined-plane axis of last prism facets 8a and 8b extends upward and intersects to form one the 3rd peak angle θ
3, and through descending the upper and lower connecting structure of prism element 62 on the prism element 61, two and 63 thus, the last prism facets 8a of last prism element 63 and 8b also are formed with one the 3rd vertical height H
3, again according to above-mentioned first peak angle θ
1, second peak angle θ
2, the 3rd peak angle θ
3, down prism element 61 bottom width W, the first vertical height H
1, the second vertical height H
2As reaching the 3rd vertical height H
3Etc. structure and parameter and also can reach the cited the present invention of above-listed Fig. 3～Fig. 6 and make the backlight liquid crystal display module increase the effect of briliancy and luminous flux, and in like manner can demonstrate,prove, at first peak angle θ
1＞the second peak angle θ
2＞the three peak angle θ
3Etc. being most preferred embodiment under the condition, can make the prism 6 whole best increase briliancy and the effects of luminous flux of producing.
Please consult shown in Figure 8 again, the 3rd embodiment for the blooming piece 4 of multisection type light collecting of the present invention, wherein, show that the following prism facets 6a of following prism element 61 of this prism 6 and the peak that 6b extends upward formation are shaped as circular shape, and the last prism facets 7a and the upwardly extending peak of 7b of going up prism element 62 are shaped as the triangled tip peak shape, and connecting structure and position that the circular arc peak of following prism element 61 and last prism element are 62 are not limit, be to enumerate down the connecting structure of the point of contact C of both sides, circular arc peak lower edge that two tie point D of the both sides, circular arc peak of prism element 61 and last prism element 62 and D be higher than prism element 61 down and following prism facets 6a and 6b and C and position embodiment in the present invention, and the combination of the following prism element 61 of this kind and last prism element 62 still can reach the effect that the invention described above makes backlight liquid crystal display module increase briliancy and luminous flux for its explanation.
Please cooperate shown in Figure 9 again, the 4th embodiment for the blooming piece 4 of multisection type light collecting of the present invention, wherein, the following prism facets 6a of the following prism element 61 of demonstration prism 6 and the peak that 6b extends upward formation are shaped as the triangled tip peak shape, and the last prism facets 7a and the upwardly extending peak of 7b of going up prism element 62 are shaped as circular shape, and connecting structure and position that the circular arc peak of last prism element 62 and following prism element are 61 are not limit, be the connecting structure of mid point E at the circular arc peak that is linked to prism element 62, the most advanced and sophisticated peak of triangle of enumerating down prism element 61 and position embodiment in the present invention, and the combination of the following prism element 61 of this kind and last prism element 62 still can reach the effect that the invention described above makes backlight liquid crystal display module increase briliancy and luminous flux for its explanation.
Please consult shown in Figure 10 again, the 5th embodiment for the blooming piece 4 of multisection type light collecting of the present invention, wherein, the following prism facets 6a of the following prism element 61 of demonstration prism 6 and the peak that 6b extends upward formation are shaped as the triangled tip peak shape, and the last prism facets 7a and the upwardly extending peak of 7b of going up prism element 62 are shaped as the triangled tip peak shape, and the last prism facets 8a and the upwardly extending peak of 8b of going up prism element 63 are shaped as circular shape, and the following prism element 61 of this kind, last prism element 62 reaches the combination of going up prism element 63 still can reach the effect that the invention described above makes backlight liquid crystal display module increase briliancy and luminous flux, and the embodiment that Figure 10 disclosed, only be convenient to the example of explanation for the present invention, such as be at the following prism facets 6a of following prism element 61 and 6b extend upward formation be shaped as circular shape or go up the last prism facets 7a of prism element 62 and the upwardly extending circular shape etc. of being shaped as of 7b independent or descend prism element 61, last prism element 62 reaches change and the combination that the peak of going up 63 wantonly two elements of prism element is shaped as circular shape, does not still take off opinion category of the present invention.
Please cooperate shown in Figure 11 again, the 6th embodiment for the blooming piece 4 of multisection type light collecting of the present invention, wherein, on the base film 5 of display optical diaphragm 4 by among first embodiment shown in Figure 3 with several two-part prisms of forming by following prism element 61 and last prism element 62 6, adjacent binding shown in Figure 7 with several by following prism element 61, last prism element 62 reaches goes up the syllogic prism 6 that prism element 63 is formed, increase the briliancy of LCD and the effect of luminous flux and reach the present invention, and the small variation by each prism 6 peak height, can further eliminate optical coupled (wet-out) shortcoming of available liquid crystal display backlight module.And the combination of above-mentioned prism 6 arrays, be not to exceed with Fig. 3 and shown in Figure 7 two sections or 6 combinations of multisection type prism, such as be with adjacent blooming piece 4 structures that connect to prism array of at least two kinds of prisms 6 between the prism 6 shown in the 3rd embodiment～the 5th embodiment of Fig. 8～shown in Figure 10 and this Fig. 3 and first embodiment shown in Figure 7 and second embodiment, also do not take off opinion category of the present invention.That is the multisection type prism 6 by differing heights is arranged in array or lines up optical coupled (wet-out) phenomenon that array can be eliminated existing backlight module in random mode (atactic) with height interleaved (syntactic), can significantly improve the briliancy and the luminous flux of LCD.
The blooming piece of above Fig. 3～multisection type light collecting of the present invention shown in Figure 11, wherein, the description that is disclosed and graphic, only for ease of illustrating and illustrating the one side of the technology of the present invention content and the cited preferred embodiment of technological means, be not in order to arrest limit category of the present invention, such as be that the equivalence element of doing at structure of the present invention, technology and means is replaced and displacement, when the category that does not take off the present invention and advocated, its scope will be defined by the scope of claim.
The blooming piece of the above-mentioned multisection type light collecting of the present invention can be on a base film, and straight forming has the described prism of upper and lower prism element.
But the present invention is positioned at the last prism element 62 on upper strata more easily by scraping, wearing and tearing, so each prism if can make down the material of prism element 61 with lower cost, and last prism element 62 sides that are positioned at the top select the material (its price is higher) of scratch-resistant for use, and needn't all make with the expensive material of scratch-resistant by upper and lower prism element, the cost of manufacture of optical thin film so can be fallen greatly.
For example lower floor's (ground floor) but select cheap hardening resin for use, and upper strata (the 2nd layer) side selects for use the scratch-resistant material to comprise the nanoscale polymer-based composite, can reduce cost of manufacture like this.
The multisection type blooming that relevant above-mentioned manufacturing the present invention contains microstructure can use the distinct methods manufacturing, for example comprises the following step: (a) preparation one nanoscale polymer-based composite; (b) but after ground floor hardening resin (curable resin) is uniformly coated on a base film layer (supporting layer) surface; (c) but second layer nanoscale polymer-based composite is uniformly coated on the hardening resin surface again; (d) macromolecular material of bilayer is inserted the inside of microstructure die and fill up die cavity (this moment, the interface of double layer material was not must a straight line, caused the disturbance at interface because fail to be convened for lack of a quorum at the mould of stowing operation); (e) double-deck macromolecular material of curing reaches (f) demoulding and makes the multisection type blooming.But wherein said hardening resin can be photo-hardening type or thermmohardening type resin.The polymer-based composite that present embodiment uses is to use the photonasty acryl resin.Optical thin film basic unit (supporting layer) must possess the sharpness of enough printing opacities, and structural strength is enough to be applied in specific optical articles and preferable opposing temperature and aging.Basic unit commonly used comprises polyethylene terephthalate (PET), styrene-propene (styrene-acrylonitrile), cellulose acetate butyrate (cellulose acetate butyrate), cellulose acetate propionate (cellulose acetate propionate), cellulose acetate three esters (cellulose triacetate), polyethers (polyether sulfone), polymethyl-benzene olefin(e) acid ester (po1ymethylmethacrylate), polyurethane (polyurethane polyester), polycarbonate (polycarbonate), Polyvinylchloride (polyvinyl chloride), polystyrene (polystyrene), poly-to chatting dioctyl phthalate second diester (polyethylene naphthalate).The optical thin film basic unit that present embodiment uses is polyethylene terephthalate (PET).The nanoscale polymer-based composite is evenly to be mixed and given light or thermmohardening forms by interlinkage type polymer base material and nano-grade inorganics filled thing.Wherein polymer base material can be by a diluting solvent (diluter), oligomer (oligomers), monomer (monomers) and corresponding smooth initiator (photoinitial) and adjuvant interlinkage and other useful adjuvant, as surfactant, antistatic agent and other possible composition.The refractive index of nano inorganic particles is more preferably greater than 1.56.Wherein the nano inorganic uniform particles of surfaction is scattered at polymer base material, can roll up durability and refractive index or other optical property, and the nano particle of surfaction can increase the compatibility of nano particle and resin, nano particle is evenly distributed in the macromolecule resin system, and can increase the interfacial reaction between nano particle and macromolecule resin, make that composition is more durable.The nano particle of surfaction can be greater than 1nm or less than the oxide particle of single particle size or the combination particle size of 100nm.The nano inorganic particle comprises metal oxide, as aluminium, tin-oxide, and sb oxide, silicon dioxide, zirconia, titania mix.The nanoscale polymer-based composite that present embodiment uses is made up of five principal ingredients: (1) polypropylene amido ethyl formate (polyurethane-acrylate; PUA) oligomer (M:160g) (65wt%); (2) reactive diluent uses the two propylene esters (hexanediol diacrylate) of hexanediol (28wt%); (3) two kinds of light initiators: hydroxy phenyl ketone (hydroxyphenylketone) (2wt%), anilide hydrogen phosphide oxide (acylphosphine oxide) is (1wt%); (4) water wettability clay (beidelite): Na
0.6(Si
3.4Al
0.6) (Al
2) O
10(OH, F)
2.nH
2O; (5) clay surface modifier: acrylate functional alkyl amine (acrylate functionalized alkylammonium).Nanoscale polymer-based composite modulation is as follows: at first with the nano clay behind the surfaction in 45 ℃ of UV acryl glue that add ultraviolet hardenings, and with the full and uniform stirring of high speed shear mixing and blending machine 3 hours, then be placed on following 5 hours of 25 ℃ of unglazed down (avoiding producing polyreaction) Supersonic wave troughs and disperse to form stabilized nano clay dispersed system, be modulated into uncured type nanoscale polymer-based composite with ultrasonic.
Above embodiment only is used to illustrate the present invention, but not is used to limit the present invention.
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100568640A CN100470263C (en) | 2006-03-09 | 2006-03-09 | Multi-section light-collecting optical diaphragm and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100568640A CN100470263C (en) | 2006-03-09 | 2006-03-09 | Multi-section light-collecting optical diaphragm and manufacturing method thereof |
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| CN101034170A true CN101034170A (en) | 2007-09-12 |
| CN100470263C CN100470263C (en) | 2009-03-18 |
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ID=38730807
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|---|---|---|---|
| CNB2006100568640A Expired - Fee Related CN100470263C (en) | 2006-03-09 | 2006-03-09 | Multi-section light-collecting optical diaphragm and manufacturing method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102016656A (en) * | 2008-04-02 | 2011-04-13 | 3M创新有限公司 | Methods and systems for fabricating optical films having superimposed features |
| CN102695613A (en) * | 2010-02-07 | 2012-09-26 | 三菱树脂株式会社 | Laminated polyester film |
| CN102741050A (en) * | 2010-02-07 | 2012-10-17 | 三菱树脂株式会社 | Laminated polyester film |
| WO2013013597A1 (en) * | 2011-07-28 | 2013-01-31 | 京东方科技集团股份有限公司 | Prism sheet and display device |
| CN105074553A (en) * | 2013-03-25 | 2015-11-18 | 3M创新有限公司 | Dual-sided film with compound prisms |
| CN105074325A (en) * | 2013-03-29 | 2015-11-18 | 夏普株式会社 | Illumination device and display device |
| CN105334669A (en) * | 2015-12-09 | 2016-02-17 | 青岛海信电器股份有限公司 | Backlight module and liquid crystal display device |
| CN113917584A (en) * | 2021-09-08 | 2022-01-11 | 东莞市光志光电有限公司 | Brightness enhancement film, backlight module, rolling wheel and processing method of brightness enhancement film |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000041009A1 (en) * | 1998-12-31 | 2000-07-13 | Microsharp Corporation Limited | Stepped surface diffuser |
| WO2002063352A2 (en) * | 2000-12-15 | 2002-08-15 | Reflexite Corporation | Light redirecting film |
| US7282272B2 (en) * | 2003-09-12 | 2007-10-16 | 3M Innovative Properties Company | Polymerizable compositions comprising nanoparticles |
| CN100533265C (en) * | 2004-04-08 | 2009-08-26 | 精碟科技股份有限公司 | projection screen and lens thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102016656A (en) * | 2008-04-02 | 2011-04-13 | 3M创新有限公司 | Methods and systems for fabricating optical films having superimposed features |
| CN102695613A (en) * | 2010-02-07 | 2012-09-26 | 三菱树脂株式会社 | Laminated polyester film |
| CN102741050A (en) * | 2010-02-07 | 2012-10-17 | 三菱树脂株式会社 | Laminated polyester film |
| WO2013013597A1 (en) * | 2011-07-28 | 2013-01-31 | 京东方科技集团股份有限公司 | Prism sheet and display device |
| US8964318B2 (en) | 2011-07-28 | 2015-02-24 | Boe Technology Group Co., Ltd. | Prism sheet and display device |
| CN105074553A (en) * | 2013-03-25 | 2015-11-18 | 3M创新有限公司 | Dual-sided film with compound prisms |
| CN105074553B (en) * | 2013-03-25 | 2019-07-02 | 3M创新有限公司 | Two-sided film with composite prism |
| CN105074325A (en) * | 2013-03-29 | 2015-11-18 | 夏普株式会社 | Illumination device and display device |
| CN105334669A (en) * | 2015-12-09 | 2016-02-17 | 青岛海信电器股份有限公司 | Backlight module and liquid crystal display device |
| CN105334669B (en) * | 2015-12-09 | 2018-12-28 | 青岛海信电器股份有限公司 | A kind of backlight module and liquid crystal display |
| CN113917584A (en) * | 2021-09-08 | 2022-01-11 | 东莞市光志光电有限公司 | Brightness enhancement film, backlight module, rolling wheel and processing method of brightness enhancement film |
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| CN100470263C (en) | 2009-03-18 |
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