TW200827779A - Brightness enhancement film having curved prism units with various wave valleys - Google Patents

Abstract

A brightness enhancement film comprises a base plate having a first surface and a second surface, and a plurality of curved prism units arranged on the first surface. Each of the curved prism units are formed with a wave peak while each two of the adjacent curved prism units are formed with a wave valley therebetween. The wave valley of the curved prism unit forms a 3D height variation along a meandering direction. Each of the curved prism units is further formed with at least one curved extended facet which is extended and suitably varied in curvature. Thus, the 3D height variations of the wave valleys and the curvature variations of the curved extended facets can uniformly scatter a light emitted from the second surface of the base plate and guide the light so that the light is refract in at least two dimensions to penetrate outward the curved prism units.

Description

200827779 IX. Description of the Invention: [Technical Field] The present invention relates to a curved prismatic concentrating sheet having a variation in trough depth, and more particularly to a concentrating sheet applied to a liquid crystal display (UqUid Clystal Display), a surface of which is formed a plurality of curved prism units, and the valley bottom depth of each curved prism unit has different depth changes in the bending direction of the trough, which can solve the defect problem of impurities or substrate irregularities, and the foreign matter is discontinuously protruded The position of the trough reduces the effect of the interlacing interference, which in turn increases the image quality. [Prior Art] Conventional concentrating sheet 'shows as shown in Figs. 1 and 2', which discloses a concentrating sheet 9, "containing a substrate 91 and a plurality of prism units 92, which are arranged in parallel on one of the substrates 91 On the first surface, the prism unit 92 is composed of two inclined surfaces for refracting light to generate a condensing phenomenon. The prism unit 92 has a peak 921, respectively, and each of the two adjacent prism units is respectively A valley 922 is formed. Each of the valleys 922 of the prism unit 92 has a coplanar same trough depth with respect to the first surface of the substrate 91. Therefore, when a light is incident on a second surface of the substrate 91, a larger incident occurs. When the angle is incident on the substrate 91, the light can smoothly refract the prism unit 92 that emits the first surface of the substrate 91. However, when the prism unit 9 2 is formed by applying the ultraviolet ray on the substrate 91 The foreign matter 93 may be mixed in the ultraviolet curable adhesive or in the substrate, for example, impurities, particles or stains, etc. During the manufacturing process, the foreign matter 9 3 may be easily extended to protrude from the plurality of valleys 922. And random Distributed throughout the condensing plate 9

In the valley 922 of Linda\PK Pa.UW丨0丨Ud« 〇200827779, as shown in Fig. 2, the 93-line continuity of the foreign object protrudes out of the two waves, thus causing the trough 922 of the concentrating sheet 9. There are many foreign objects 930 inside. Therefore, in the case of the entire concentrating sheet 9, when a plurality of foreign matter spots 930 appear in the troughs 922, the product yield of the concentrating sheet 9 is seriously affected and the service life of the forming wheel is shortened. Another conventional concentrating sheet, such as the invention patent of "Optical Film" in U.S. Patent No. 6,354,7,9, discloses an optical film comprising a substrate and a microstructure layer having a surface on one surface of the substrate. The structural layer, the microstructure layer is arranged with a plurality of triangular prisms each having a peak, and the peaks of each of the triangular prisms have different peak height variations, which are used to refract light to form a diffusion effect. Furthermore, each of the two $ adjacent to the two prisms has a valley between them, and there are still many foreign matter points in the trough, thereby seriously affecting the product yield of the concentrating sheet and shortening the molding", i round The service life. Another conventional concentrating sheet, such as the invention patent of PCT Patent No. 2005/003851 "Prism Sheet of Back Light Unit for LCD", discloses that a slab also contains a substrate and a micro The structural layer 'the surface of one of the substrates has the microstructure layer, the microstructure layer is arranged with a plurality of triangular prisms each having a peak, and the peaks of each of the triangular prisms have a maximum height and a minimum height of the non-planar The height of the peak changes to refract light so that the light forms a diffusion effect. Moreover, each of the two adjacent triangular prisms has a valley' and a plurality of foreign matter points still appear in the trough, thereby seriously affecting the product yield of the concentrating sheet and shortening the service life of the forming wheel. —7 — D:\0H LindnXPK Pat\P«|〇lu 06/12/21/02:21 P« 200827779 Another conventional concentrating sheet, such as PCT Patent No. 2006/046791 "Optical film and its backlight unit [ The invention relates to an optical film comprising a substrate, a first microstructure layer, a second microstructure layer and a third microstructure layer. A first surface of the substrate has the first microstructure layer, and a second surface of the substrate has the second and third microstructure layers. The first microstructure layer is for refracting incident light to cause the incident light to form a diffusion effect. The second microstructure layer is also used to refract and scatter the incident light. The third microstructure layer is formed along the surface of the second microstructure layer and has an optical cross section for guiding the incident light to exit the optical film. Furthermore, each of the two adjacent layers has a valley between the second microstructure layers, and a plurality of foreign matter points still appear in the valley, thereby seriously affecting the product yield of the concentrating sheet and shortening the service life of the forming wheel. Another conventional concentrating sheet, such as the invention patent of PCT Patent No. 02/04858, "Backlight with Structured Surfaces /", discloses that a backlight unit also includes a substrate and an optical a microstructure layer having a surface on one surface of the substrate, the optical microstructure layer arranging a plurality of triangular prisms each having a peak, each of the peaks of the triangular prism having different peak height variations, Used to refract light to create a diffusing effect. Furthermore, each of the two adjacent prisms has a -valve between the prisms, and a plurality of foreign matter points still appear in the troughs, thereby seriously affecting the product yield of the concentrating sheet and shortening the service life of the forming wheel. In addition, the conventional concentrating film, such as the Republic of China Announcement No. M291542 "Qu 8 D: \0I-l LindaVPl PalVPKIOMldoc 06/12/21/02: 21 f«l 200827779 linear optical modulation element and backlight module having the same A novel patent discloses a curved optical modulation element comprising a substrate and a curved microstructure layer, the curved surface of the substrate having the curved microstructure layer, the curved microstructure layer having a curve extending and mutual The parallel diffuser and the set=section are respectively available for light diffusion and light collection. The diffusing portion = the light collecting portions each have an arcuate surface and a prismatic surface. Furthermore, there is a valley between the adjacent diffusing portion and the collecting portion, and a plurality of foreign matter points still appear in the trough, thereby seriously affecting the product yield of the concentrating sheet and shortening the service life of the forming rim. The conventional concentrating sheet is provided with a refractive pattern 之一 (for example, a Μ夂 mirror unit or the like) on one surface of the substrate, and a plurality of foreign matter points appear in the valley of the refracting pattern layer, and the shape of the trough is not further improved. . In view of the above, the present invention improves the disadvantages of the conventional concentrating sheet, which is formed by forming a plurality of curved prism units on one surface of the substrate, and the curved prism unit is used for opening and adjusting the surface curvature. . A valley is formed between each of the two adjacent curved prisms and the trough has a change in valley depth with respect to the first surface of the substrate. In the section of the curved prism unit in the longitudinal direction [extending 2 directions], the valley bottom depth of the trough is extended at the curved edge of the trough. There is a depth variation of (4), which is substantially regular or irregular, such as linear or streamlined; in the width direction of the curved prism element [eighth], the change in the depth of the Weigu is substantive or irregular. Li ί 'like, for example, curved. In particular, the trough depth varies almost at the points of the valleys of all the 1^ track elements. By the way, the invention can solve the problem of the shortage of the raw material base material and make the foreign matter

06/12/21/02:21 W —9 — 200827779 Non-continuous performance highlights the position of the trough and reduces the effect of the embossing, thereby increasing the image quality. [The present invention] The main object of the present invention is to provide a variation with the depth of the trough The curved, prismatic concentrating > 1, which is formed by a plurality of curved ribs 7G, and the valley-deep depth phase-surface of each curved prism unit is respectively in the bending direction of the trough Differently, to solve the defect problem of the smoothness of the silk material, the foreign matter is discontinuously protruded from the trough position, so that the gamma has the effect of increasing the product yield and extending the service life of the wheel. A secondary object of the present invention is to provide a curved HkS sheet having a variation in trough depth, wherein the surface of the substrate is formed into a plurality of curved prisms, and the valleys of the curved prism units are first relative to the substrate. The surface has a change in the depth of the valley, respectively, so that the incident light tends to produce at least two-dimensional refraction and scattering, and the money is exposed to the effect of increasing the light_self-degree and low fringe interference effect. ^

Another object of the present invention is to provide a bending having a variation in the depth of a trough, wherein the surface of the substrate is formed with a plurality of curved prisms, and the valleys of the respective column elements are separated from the surface of the substrate. The variation of the valley depth is such that the incident light tends to produce at least two-dimensional refraction and scattering, and the present invention has the effect of increasing the overall luminance (brightness) performance. A curved prismatic concentrating sheet having a varying trough depth according to the present invention comprises a substrate and a plurality of curved prism units. The substrate has a first surface -10 - O:\Ol-l LindaNPI Pit\p||〇iu doc 〇β/Ι2/2|/Π2:2ί Ρ)| 200827779 and a second surface. The curved prism unit is arranged on the first surface of the substrate. The curved prisms each have a peak, and each of the two adjacent curved prism units is provided with a valley. Each of the valleys of the curved prism unit has a change in valley depth with respect to the first surface of the substrate, and the valley depth of the valley has a different depth variation in the direction of the curvature of the trough. The curved prism unit has at least a curved extended curved surface to form a suitable S curvature change to promote scattering of light from a second surface of the substrate and to direct the light to produce at least two-dimensional refraction, and to project the curved prism unit . The variation of the trough depth can solve the defect problem of impurities or unevenness of the substrate, so that the foreign matter is discontinuously protruded from the trough position, so that the invention has the effects of increasing the yield of the product and prolonging the service life of the forming wheel. [Embodiment] -S1 in order to make the above and other objects, features and advantages of the present invention become more apparent, and the description of the present invention will be described in detail below with reference to the accompanying drawings . / Referring to Figures 3 and 4, the curved prism concentrating sheet 1 having the f-depth variation of the first preferred embodiment of the present invention comprises a substrate 11 and a plurality of curved prism units 12, which are required by the demand. The substrate 11 has a first surface 11a and a second surface lib for allowing light to pass therethrough. The first surface 11a of the substrate 11 is preferably used as the light exit side of the substrate 11, and the second surface 11b is preferably used as the light incident side of the substrate 11, but vice versa. The curved prism unit 12 is a microstructure having an extension of the octagonal curve, and the curved prisms 70 12 are arranged flush on the first surface 11a of the substrate 11, and D:\0M LindiiNPI Pat\ttt〇 H4.doc

-12 2 丨 02: 2» W 200827779 The f-curve prism unit 12 is preferably located on the light-emitting side of the substrate, but may also be located on the light incident side. The curved prism unit 12 is composed of a first inclined surface 12a and a second inclined surface 12b. At least one of the first inclined surface and the second inclined surface i2b is selected from a curved extended surface, and the Ge can form a regular or Irregular wavy bends to create a change in surface curvature that in turn produces a refracting of light in at least two dimensions to produce a good concentrating phenomenon. The first inclined surface i2a and the second inclined surface 12b of each of the curved prism units 12 are respectively formed with a peak 121. Further, the first inclined surface 12a of the curved prism unit 12 and the second inclined surface 12b adjacent to the curved prism unit 12 form a valley 122. Referring to Figures 3, 4 and 5, in more detail, the angle between the first inclined surface 12a of the curved prism unit 12 and the peak 121 of the first inclined surface 12b of the first preferred embodiment of the present invention is more Good between 7 〇. To 16 baht. Between the 'especially between 85. To 95. between. Preferably, the peaks 121 of the two adjacent curved prism units 12 have substantially the same vertical height (the vertical height refers to the height perpendicular to the first surface 11a of the substrate n), and the vertical twist is preferably Between (microns) and 1 〇〇/zm, especially between 20/zm and 75# m. Furthermore, each of the two adjacent curved prism units 12 preferably has substantially the same horizontal width (the horizontal width refers to the width of the first surface 11a parallel to the substrate 11), and the horizontal width is preferably Between (microns) and 250//m, in particular between 25/zm and 80/m. In addition, each of the two adjacent curved prism units 12 may be selected to vary along the same regular curved path, for example, bending to the right 5 (micro-finish) and then to the left, but may also choose along different rules or not D:\OM LindaVPK Pat\PK10Mldoc I 12 – 06/12/21/02:21 W - 200827779 The curved path of the rule changes. In particular, referring to Figures 4, 5 and 6, the valleys between the two adjacent sounding column units 12 of the preferred embodiment are preferably formed in a regular or irregular manner. The change, the two depths, refers to the depth relative to the first surface 11a of the substrate U. That is, the curved prism is single-opened on the 9th and the #士人I卩 is on the section of the length of the early 70th (extending longitudinal direction), and the valley bottom depth of the f valley is different in the trough_sounding direction. The chemical system is regular or irregular, for example, an arc; a section in the width direction of the prism unit 12 (extending the lateral direction). The depth of the valley bottom has a depth variation of (4), which is substantially regular or irregular. , for example, curved. In Fig. 6, the depth and surface curvature are measured at 10 different point positions in the same valley 122. In the same valley 22, the depth difference between the maximum depth and the minimum depth of the valley 122 is between 1.07/m (micrometer) and 5G/m, especially about 3.3/zm. It is worth noting that, as shown in Figures 3, 4, and 5, the depth of the trough of the trough in the direction of the curvature of the trough varies linearly on the giant view, but in fact, as shown in Fig. 6. The depth of the valley bottom of the trough is non-linear in microscopic variation in the direction of the curvature of the trough, and the variation of the trough depth is substantially substantially dispersed in all of the curved prism unit on the entirety of the concentrating sheet 1. In addition, as shown in FIG. 4a, in the curved prism concentrating sheet having the variation of the trough depth of the second preferred embodiment of the present invention, the curved prism unit 12 is The first inclined surface 12a and the second inclined surface 12b (that is, at least one curved D:\01-l Lin*i\Pl Pat\W!0M4doc

ΠΓ»/丨2/21/02:2丨 W 200827779 extended surface) can further select several side ridges 123 which are interlaced with each other according to product requirements, in order to choose to present continuous changes, the same surface curvature change or different surface curvature changes. Referring to FIGS. 3, 4 and 5 again, the substrate 11 and the curved prism unit 12 of the first preferred embodiment of the present invention can be manufactured by the same transparent material by integral molding; or the substrate 11 And the curved prism unit 1 can also be manufactured by different light-transmissive materials, such as lamination, stamping, rolling or molding or eight-effect forming, to meet different characteristics or manufacturing requirements, and to increase the scope of application of the present invention. With the margin of manufacturing. For example, the material 11 J is obtained from various flexible transparent substrates selected from the group consisting of polyethylene terephthalate (P〇lyethylene_terepht M^^, polyethylene naphthalate (PEN), poly Carbonate (PC), polyvinyl alcohol (PVA) ♦ ♦ At least one of pvc and other high molecular polymers or a composition thereof. The curved prism unit 12 is preferably obtained from a UV curable adhesive (UV adhesive) Referring to Figures 3, 4 and 5 again, the cushion layer 13 of the first preferred embodiment of the present invention is made of a transparent material f, preferably selected from the group consisting of ultraviolet curable glue (uv glue), or It can be selected from acrylic transparent resin Ucrylicresin. In particular, the material quality of the underlayer 13 is relatively high, relatively higher than the material hardness of the substrate n, so that the underlayer 13 can be used to protect the substrate n, The substrate 11 is prevented from being worn. At the same time, by appropriately controlling the shrinkage ratio of the light-transmitting material of the cushion layer 13 to be substantially the same or similar to the shrinkage ratio of the light-transmitting material of the substrate 11, the cushion layer 13 can be further used. In order to prevent the substrate n from warping. Further, the surface of the underlayer 13 has a plurality of micro-convex structural units - 14 O:\OI-l LindeXPK Pat\«I〇M4 doe 06/12/21/02:21 Ρ» 200827779. The diameter of the micro-convex structure unit 131 is preferably maintained between 〇·2# m (micrometer) to Between 100/ζιη, especially between 1 〇//m (micrometer) to the other, in order to control the processing quality. The shape of the micro-convex structure unit 131 may be selected from a spherical arc, a ball-like arc, an ellipse. At least one of a shape, a sapphire, an ovate, and an irregular polyhedron, or a mixture thereof. In particular, the micro-convex structure unit 131 has at least two kinds of convex height variations with respect to the surface lib of the substrate 11 It is spread on the surface of the mat 13 in a random irregular manner. More specifically, the mat 13 of the first preferred embodiment of the present invention can optionally be rolled, coated, pasted, evaporated, splashed. A plating or the like covers the second surface lib of the substrate 11, and the pad layer 13 is preferably located on the light incident side of the substrate. In particular, the present invention can prepare a molding roller (not shown) And at least one type of sand (not shown), which is sprayed on the surface of the 5-shaped forming roller by sandblasting, and controlled by spraying The speed, the nozzle size or the moving speed thereof are specifically adjusted to adjust the sand blasting density on the forming roller. After the blasting treatment, the irregular surface of the forming roller is randomly distributed with an irregular concave structure (not shown). Next, a UV-curable adhesive (UV adhesive) is applied to the first surface 11a of the substrate n, and the curved prism unit 12 is formed in advance. After Ik, the second surface 11b of the substrate 11 is further coated with a UV-curable adhesive. And using the above-mentioned forming roller with a dimple structure to roll the ultraviolet curing adhesive, so that the surface of the ultraviolet curing adhesive is randomly distributed with a regular micro-convex structure το 131, and the shape of the micro-convex structure is complementary to $131 The dimple structure may be selected from at least one of the above-described shapes such as a spherical arc or a bulb-like arc or a mixture thereof. After the UV-curable adhesive of the second surface 11b is cured, it is shaped as 1>gt;:\01-1 Linda\P« PatXPilOlU doc-15-200827779.

Referring to FIG. 5, in the concentrating sheet 1 of the first preferred embodiment of the present invention, when the light is first incident on the surface of the mat 13 into the concentrating sheet i (that is, from the substrate 11) When the surface of the second surface 11b is incident, since the micro-convex structure unit 131 of the pad layer 13 is irregularly dispersed on the surface of the pad layer η, the surface of each of the micro-convex structure units 131 can provide a light beam. The interface causes the light 14 or 15 to form a variety of refractions and scattering from the surface and into the underlayer 13 to relatively increase the probability of diffusion and angle change. Further, since the first inclined surface 12& and the first inclined surface 12b of the curved prism unit 12 may be the same or different, at least one of the first inclined surface 12a and the second inclined surface 12b is selected from the group consisting of Curved extended curved surface, which can form a regular or irregular wave-like curvature, so that a change in surface curvature is generated, which is advantageous to guide the second surface of the substrate U to "at least two-dimensionally incident light ray 14 or 15" In particular, please refer to Figures 5 and 6 again, the valleys 122 between the two adjacent curved prisms 12 also have a change in the valley depth, the valley bottom depth in the trough, the curved extension direction The change in depth is not only linear on the microscopic, but also the depth of the bottom of the trough is almost substantially uniform in the direction of the curvature of the trough. The position of each point of the trough m of the prism unit u is curved. Therefore, even if the concentrating sheet 1 is accidentally mixed with the foreign matter 16 (for example, impurities, lions, stains, etc., the size of the foreign matter) is formed when the curved prism unit 12 is formed. Can continuously protrude from a plurality of troughs 122), on the whole of the concentrating sheet i, the majority of the troughs 122 can still maintain the average wave D of the same quality of f:\0I-I LindaVPK ^l\PKI0M4< Loc 16 - 06/12/21/02:21 13⁄4 200827779 Valley depth 'Therefore, the trough 122 of the present invention can achieve substantially uniform scattering and concentrating effects by varying trough depths. Therefore, regardless of whether or not the concentrating sheet 1 contains the foreign matter 16, the actual refracting and diffusion efficiency of the concentrating sheet is not affected, so that the product yield and the stack which affect the concentrating sheet can be further greatly improved. Pattern interference effect (Morie effect;). Furthermore, as shown in FIG. 5, the light 14 is incident on the underlayer 13 and the substrate 11 at a relatively large incident angle with respect to the underlayer 13 and the second surface lib (ie, the light 14 is less A surface perpendicular to the surface of the micro-convex structure unit 131 or the light ray 15 is incident on the underlayer 13 and the base at a small incident angle (less than 6 to 9 Å) with respect to the 塾 layer 13 and the second surface nb. The material (that is, the light 15 is perpendicular to the surface of the micro-convex structure unit 131), and the light rays 14 and 15 can be diffused by the angle of the micro-convex structure unit 131 of the pad layer 13, and the light 14 And the micro-convex structure unit 131 of the pad layer 13 also generates a plurality of diffusion spectroscopic lights to correct the emission angle and the concentrated light, so that the first inclined surface 12a and the second inclined surface of the curved prism unit 12 can be smoothly refracted. I2b can also improve the uniformity of the light source. More specifically, the underlayer 13 of the present invention is effective in reducing the probability of total light reflection. Furthermore, the first inclined surface 12a and the second inclined surface 12b of the curved prism unit 12 can also provide a curved surface to reduce the probability of total light reflection, and concentrate the scattered light that has spread out, thereby increasing the brightness of the concentrating sheet. Therefore, the present invention can greatly improve the primary penetration efficiency of the light rays 14 and 15 and reduce the light loss rate, and at least obtain an excellent two-dimensional condensing effect. Furthermore, the substrate 11 is often in the form of the first and second surfaces Ua, 11b D: \0I-1 Linda\p| ^'WlOJUdoc 〇β/Ι2/2»/02:2Ι t>« —17 — 200827779 Different and spontaneous trends in warping. At this time, the tantalum layer η' of the present invention can provide a higher hardness to relatively reduce, reduce, and avoid the probability of the substrate being thinned, and thus has a better resistance to (four). Furthermore, during the stacking or handling of the concentrating sheet 1, the enamel layer 13 of the present invention can also provide a hardness of f to protect the lower surface 11b of the substrate n, and the underlayer 13 is not sharp. Therefore, it does not cause a ship, and has a better wear resistance of θ. Thereby, the present invention will be able to contribute to a relative increase in product yield. In other words, the present invention not only provides two-dimensional concentrating, uniform sentence diffusion, modification defects and anti-wear effects, but further increases anti-wetting (Anti_wet_out), reduces Newton, s ring and The moie effect is reduced. On the other hand, as shown in FIG. 7 , in the third preferred embodiment of the present invention, the material of the curved prism unit 12 may also be randomly selected according to a predetermined ratio. Mixing a plurality of diffusing particles 124, the weight ratio of the diffusing particles-vine 124 to the curved prism unit 12 is preferably between about ～5% and 5%, especially between about 1°/〇 and 35°. /. between. The diffusing particles 124 are preferably made of a material different from the curved prism unit 12, for example, a material made of acrylic material and/or a glass material, and the glass material may be further selected from two. Oxide Oxidation (Si〇2) >2O2 (8-12〇3), Boron Oxide (B2〇3), Oxidation Ma (ca〇), Magnesium Oxide (Mg〇), Shixi Gum (silic〇ne) At least one of a resin, a p〇iyester resin, and a styrene resin, or a composition thereof. Therefore, at the time of preparation, the present invention can be blended by any conventional blending method, for example, 1 to 35 weight units of acrylic material or glass can be appropriately mixed in every 1 unit weight-unit of ultraviolet curable adhesive. The material is thus prepared to be blended with the diffusing particles 124-18-p:\OI>i Liad«\RK Pat\PKlfll44.doc (wxznwmix w 200827779). The particle size is preferably maintained between Ο.ίμιη (micrometer) to 3〇//m, especially between 〇1 //m (micrometer) to l〇/zm, in order to control the processing quality. The shape of the diffusion particles 124 may be selected from at least one of a training, a spheroidal shape, a rounded shape, a (four) shape, an ovate shape, and an irregular polyhedral shape, or a mixture thereof.

Referring to FIG. 7 again, when the light is first incident on the surface of the enamel layer 13 from the surface of the concentrating sheet 1 (the second surface 11b of the substrate 11), due to the micro layer 13 The convex structure unit 13U is irregularly distributed on the surface of the layer 13, so that the surface of each of the micro-convex structure units 131 can provide a ray-refractive interface, so that the light forms a variety of refraction and scattering on the surface (eg, 5 is shown) and enters the layer 13 to relatively increase the probability of diffusion and angle change. Further, at least one of the first inclined surface 12a and the second inclined surface 12b of the concentrating sheet 1 曲 4 curved prism unit 12 of the present invention is selected from a curved extended curved surface to generate a surface curvature change, and each of the two phases The valleys 122 adjacent to the curved prism unit 12 also exhibit a variation in trough depth. Furthermore, depending on the material, the diffusion particles 124 of the present invention are irregularly or regularly mixed in the curved prism unit a, and the interface between the diffusion particles 124 and the curved prism unit 12 (not shown) Further, a light refracting interface may be further provided, so that the light is further refracted and scattered by the interface, and then the curved prismatic soap element 12 is injected to hunt to increase the probability of diffusion and angle change. As described above, the concentrating sheet 9 which is conventionally used in FIG. 2 is easily re-exposed from the second surface of the substrate 91 due to the total reflection of the ray 94, thereby reducing the efficiency and increasing the penetration efficiency of the ray 94. Disadvantages such as light loss rate, 6:19 - Ρ»»1\Ρ1ίΙ0ΙΗΑκ ^12/21/02:21 Μ 200827779 The present invention forms the curved prism unit 12 on the first surface 11a of the substrate u, The valleys 122 between the two adjacent curved prism units 12 have a variation in trough depth. Further, the pad layer 13 is selected to be formed on the second surface 11b, and the micro-convex structure unit 131 of the pad layer 13 has at least two kinds of protrusion height variations. Alternatively, the curved prism unit 12 may optionally be mixed with the diffusion particles 124. Thereby, the present invention can provide at least two-dimensional concentrating, uniform diffusion, anti-wetting, reducing Newton's rings, reducing the effects of reducing the interlacing interference, modifying defects and anti-wear, and simultaneously reducing incident light at a small angle. The probability of anti-all shots, thereby effectively improving product yield, primary penetration efficiency and reducing light loss rate. Although the present invention has been disclosed in detail by the foregoing preferred embodiments, it is not intended to limit the invention, and the invention may be practiced without departing from the spirit and scope of the invention. The protection of Fan Fan is regarded as the post-consultation of the company. —20 O:\OI-I Linda\« PhtNPICIOUl doe

0(1/12/21/02:21 PJI 200827779 [Simplified illustration] Fig. 1 is a perspective view of a conventional concentrating sheet. Fig. 2 is a side view of a conventional concentrating sheet. Fig. 3 A perspective view of a curved prism concentrator having a change in trough depth in a preferred embodiment. Fig. 4 is a partially enlarged perspective view of a book prism prism concentrating sheet having a variation in trough depth according to a first preferred embodiment of the present invention. 4a is a partially enlarged perspective view of a curved prismatic concentrating sheet having a variation in trough depth according to a second preferred embodiment of the present invention. FIG. 5 is a sharp curved prism having a variation of trough depth according to a first preferred embodiment of the present invention. Schematic diagram of condensing light for light refraction. 6th: The curve of the variation of the trough depth of the column concentrating sheet with the variation of the trough depth of the first preferred embodiment of the present invention. FIG. 7 is the third embodiment of the present invention. The preferred embodiment has a % of the trough depth variation of the curved tooth concentrator. 11 substrate lib second surface 12a first inclined surface 121 peak 123 side ridge 13 cushion layer 14 light [main component symbol said B] 1 concentrating sheet 11a first surface 12 curved prism unit 12b second inclined surface 122 trough 124 diffusing particles 131 micro convex structure unit D: \01-l UndaVPK t^tXPKlQUidoe a 21 —

06/12/21/02:21 PS 200827779 15 Light 16 Foreign matter 9 Condenser 91 Substrate 92 Prism Early 921 Crest 922 Wave 93 Foreign matter 94 Light

Claims (1)

200827779 X. Patent Application Range·· A curved prismatic concentrating sheet having a variation of wave-valence, comprising: a first surface and a second surface; the substrate is permeable to light; and a plurality of curved prism units , which are adjacent to each other on the first surface of the substrate, which has a peak, and each of the two prismatic units 2 Between the prismatic units, there are - valleys, each of which: the valley bottom of the prism unit has a different depth variation with respect to the first surface of the substrate in the direction of the wave, and the "parent %" The curved text unit has at least one curved curved surface, and the curved curved surface can form a wave material to change the curvature of the curved surface, so that the light generates at least two-dimensional refraction and reduces the effect of the interlacing interference. The curved prism concentrating sheet according to the first aspect, wherein the valley bottom depth (10) of the trough in the longitudinal direction of the curved prism unit is substantially an arc-shaped or streamlined bending fluctuation. According to the invention, the curved prismatic water-splitting sheet with the variation of the trough depth as described in the item i of the patent scope is in the section of the length of the curved prism unit, and the valley bottom depth of the trough is fluctuating randomly. Or, the rules fluctuate and change. 4 According to the claim, the curved prismatic concentrating sheet with the variation of the trough depth described in the paragraph 1 of the patent, wherein the same - the trough - the maximum depth and _ The depth difference of the minimum depth is between 1·〇 micron and 5.0 micron. 5. The curved edge with the variation of the trough depth according to the application patent (4)! – 23 — l>:\0M LindaVW PatMUIOHidoc 〇β/ Ι2/2ί/〇2:2Ι W 200827779 column concentrating sheet, I. Each AA~zhong on the concentrating sheet as a whole, the trough depth varies by 6, and the yin's gas has the curved prism unit The position of each point of the trough. The curved edge of the variation of the trough depth as described in item 1 of the ⦥ the curved prism is composed of a single rhyme--the inclined surface and a slant: a bevel, the first At least one of the inclined surface and the second inclined surface, the T extends from the curved curved surface. & Shen Long/, the bending edge _ κ optical sheet with the variation of the trough depth described in the sixth item of the patent range, wherein each of the bending The angle between the first inclined surface of the prism unit and the peak of the first bevel is between 70 and 160. The curved prism with varying trough depth as described in the first paragraph of the patent scope, the light sheet, wherein each phase The curved prism unit adjacent to the substrate has substantially the same Vertical height. ^ Towel according to the patent in item 8% range variation with depth of the trough edge bent Si "ray" wherein the vertical height of the curved prismatic cells lines between 1〇 microns to 100 microns. A curved prismatic concentrating sheet having a variation in trough depth as recited in claim 1, wherein each of the two adjacent curved prism elements has substantially the same horizontal width with respect to the substrate. The curved, prismatic concentrating sheet having a variation in trough depth according to claim 10, wherein the horizontal width of the curved prism unit is between 10 micrometers and 250 micrometers. 12. A curved prismatic concentrating sheet having a variation in trough depth according to the first aspect of the patent application, wherein the substrate is obtained from a transparent transparent substrate. 13. Bending with varying trough depth as described in item 12 of the patent application scope: D:\0I-1 LindaVilC PaiMIClOlU doc — 24 — OR/I2/2t/02: 21 PS 200827779 , column concentrating > The flexible transparent substrate is selected from the group consisting of polyethylene terephthalate, polyethylene, polyethylene naphthalate, polycarbonate, ♦ vinyl alcohol, polyfluoroethylene, and polymer polymerization. At least one of the things. 14. A curved prism ♦ light sheet having a variation in trough depth as described in the scope of the patent, wherein each of the two adjacent curved prism elements varies along a curved path of the same rule. 15. The curved prismatic concentrating sheet having the variation of the trough depth as described in the second section of the stipulations of the stipulations of the invention, wherein the two adjacent curved prism elements vary along different curved paths. The curved prismatic light-emitting sheet with the variation of the trough depth according to Item 6 of the claim patent scope, wherein the first inclined surface and the second inclined surface of the curved prism unit are selected to form a plurality of side ridges interlaced with each other, The surface curvature is formed according to the scope of the claimed patent! The curved prismatic concentrating sheet having the variation of the trough depth is characterized in that the material of the curved prism unit is mixed with a plurality of diffusing particles, and the diffusing particles cause scattering of light incident from the second surface, and then the bending is emitted. Prism unit. 18. A curved prismatic concentrating sheet having a variation in trough depth according to the scope of the patent application 帛17, wherein the shape of the diffusing particle is selected from the group consisting of a spherical shape, a globular shape, an elliptical shape, a cymbidium shape, an oval shape, and no At least one of the regular polyhedral shapes. The curved prismatic concentrating sheet having a variation in trough depth according to claim 17 of the patent application, wherein the diffusion particles have a particle diameter of between 1 μm and 30 μm. D:\0M LindaXPK Pat\»10IUd〇c 〇β/Ι2/2Ι/〇2:2Ι PS —25 — 200827779 2〇, curved prismatic concentrating sheet with varying trough depth as described in item 1 of the patent application scope The second surface of the substrate is further provided with a pad layer having a plurality of micro convex structure units, the micro convex structure unit having at least two kinds of convex height variations with respect to the second surface, the second surface The micro-convex structure sheet 70 causes scattering of light incident from the second surface, and then bends the prism unit. 21. Bending with varying trough depth as described in item 2 of the scope of the patent application A prismatic concentrating sheet, wherein the micro-convex structural unit is randomly irregularly scattered on a surface of the underlayer. 22 The bending of the variation of the trough depth as described in the second section of the patent application scope is ~ her concentrating sheet' wherein the micro-convex structural unit has a diameter ranging from 02 micrometers to 100 micrometers. ～23. A curved prismatic concentrating sheet having a variation of trough depth according to the second aspect of the patent application scope, wherein the shape of the slanted convex structural unit is selected from the group consisting of a spherical arc, a spherical arc, an ellipse, a sapphire, At least one of green and irregular polyhedron. 24. A curved prismatic concentrating sheet having a variation in trough depth as described in claim 20, wherein the material hardness of the enamel layer is relatively higher than the hardness of the material of the substrate. Μ, = apply for the bending of the deep valley of the wave described in Section 2G of Weiwei. The shrinkage of the material of the concentrating sheet/transfer layer is substantially the same as the negative shrinkage of the material of the substrate. D:\0M LitidaXPI PalNPKIOUl doc 0(5/12/21/02:2丨 PS( ~ 26 ~