Abstract: The invention refers to a diffusion plate and a backlight module having the diffusion plate. The diffusion plate comprises a plate-body and a plurality of pyramid-like structures arranged on a surface of the plate-body. Each pyramid-like structure has a bottom surface, a first convex portion and a second convex portion. The first convex portion and the second convex portion have different vertex angles, and therefore the pyramid-like structure can also be called as “pyramid-like structure with multiple vertex angles”. The pyramid-like structures with multiple vertex angles can increase the light splitting points, which can improve the light splitting effect of the diffusion plate. The light source of a single light-emitting diode can be divided into eight point-light sources (light splitting points) or more, which is double the number of light splitting points compared with the traditional pyramid structure with single vertex, and thus can greatly improve the light diffusion effect.

Abstract: A multilayer light diffuser plate and a method for manufacturing the same are disclosed. The multilayer light diffusion plate comprises a main layer and a partially-transmissive and partially-reflective layer located under the main layer. The top surface of the main layer is the light-emitting surface, and the light-incident surface is the bottom surface of the partially-transmissive and partially-reflective layer. The partially-transmissive and partially-reflective layer comprises a plurality of first base material layers and a plurality of second base material layers stacked alternately. The materials of the first and second base material layers have different refractive indices. The partially-transmissive and partially-reflective layer formed by alternately stacking the first and second base material layers with different refractive indices is arranged on the light-incident surface of the light diffuser plate by means of extrusion, which is simpler and less expensive to manufacture.

Abstract: The invention refers to a diffusion plate and a backlight module having the diffusion plate. The diffusion plate comprises a plate-body and a plurality of pyramid-like structures arranged on a surface of the plate-body. Each pyramid-like structure has a bottom surface, a first convex portion and a second convex portion. The first convex portion and the second convex portion have different vertex angles, and therefore the pyramid-like structure can also be called as “pyramid-like structure with multiple vertex angles”. The pyramid-like structures with multiple vertex angles can increase the light splitting points, which can improve the light splitting effect of the diffusion plate. The light source of a single light-emitting diode can be divided into eight point-light sources (light splitting points) or more, which is double the number of light splitting points compared with the traditional pyramid structure with single vertex, and thus can greatly improve the light diffusion effect.

Abstract: A multilayer light diffuser plate and a method for manufacturing the same are disclosed. The multilayer light diffusion plate comprises a main layer and a partially-transmissive and partially-reflective layer located under the main layer. The top surface of the main layer is the light-emitting surface, and the light-incident surface is the bottom surface of the partially-transmissive and partially-reflective layer. The partially-transmissive and partially-reflective layer comprises a plurality of first base material layers and a plurality of second base material layers stacked alternately. The materials of the first and second base material layers have different refractive indices. The partially-transmissive and partially-reflective layer formed by alternately stacking the first and second base material layers with different refractive indices is arranged on the light-incident surface of the light diffuser plate by means of extrusion, which is simpler and less expensive to manufacture.

Abstract: The invention refers to a quantum dot light diffuser plate that can be assembled on a backlight module with blue LEDs as the bottom light source. Microstructures having concave portions and convex portions are formed on the surface of the diffuser plate. A quantum dot layer comprising green quantum dots and red quantum dots is applied only on the concave portions of the microstructures, and thus is separated by the convex portions into small parts independent of each other. A water-blocking and gas-blocking layer is arranged on the upper surface of the quantum dot layer. The water vapor and oxygen from the outside cannot penetrate the side end faces of the quantum dot layer and invade the entire quantum dot layer, such that, the diffuser plate of the invention can have the advantages of simple process, low cost and high production yield.

Abstract: The invention refers to a diffusion plate and a backlight module having the diffusion plate. The diffusion plate comprises a plate-body and a plurality of pyramid-like structures arranged on a surface of the plate-body. Each pyramid-like structure has a bottom surface, a first convex portion and a second convex portion. The first convex portion and the second convex portion have different vertex angles, and therefore the pyramid-like structure can also be called as “pyramid-like structure with multiple vertex angles”. The pyramid-like structures with multiple vertex angles can increase the light splitting points, which can improve the light splitting effect of the diffusion plate. The light source of a single light-emitting diode can be divided into eight point-light sources (light splitting points) or more, which is double the number of light splitting points compared with the traditional pyramid structure with single vertex, and thus can greatly improve the light diffusion effect.

Abstract: The invention refers to a diffusion plate and a backlight module having the diffusion plate. The diffusion plate comprises a plate-body and a plurality of pyramid-like structures arranged on a surface of the plate-body. Each pyramid-like structure has a bottom surface, a first convex portion and a second convex portion. The first convex portion and the second convex portion have different vertex angles, and therefore the pyramid-like structure can also be called as “pyramid-like structure with multiple vertex angles”. The pyramid-like structures with multiple vertex angles can increase the light splitting points, which can improve the light splitting effect of the diffusion plate. The light source of a single light-emitting diode can be divided into eight point-light sources (light splitting points) or more, which is double the number of light splitting points compared with the traditional pyramid structure with single vertex, and thus can greatly improve the light diffusion effect.

Abstract: A light diffusion plate is configured to be assembled with a blue light source module having blue Mini LEDs to form a white light backlight module. The light diffusion plate is added with organic dyes with light-emission wavelength of 490-650 nm in order to convert the blue light into white light. The light diffusion plate is made by a foaming extrusion process and contains a plurality of micro-bubbles with a size of 60-400 ?m and a weight-reduction ratio of 15-25% for improving the uniformity of white light and resolving the MURA problem. The size of micro-bubbles is controlled by reducing the temperature of at the exit end of the T-die head, such that the wavelength of the white light emitted from the light diffusion plate can be narrower to achieve the effect of wider color gamut display.

Abstract: A direct back-lit light guide structure is applied to a light guide plate and a back-lit module. The light guide plate has a light-ejection surface and a light-inject surface opposite to the light-ejection surface. The back-lit module comprises at least one point-light source located on the light-ejection surface. The direct back-lit light guide structure comprises at least one asymmetric concave structure formed on the light-ejection surface, and each the point-light source is corresponding to one asymmetric concave structure in such a manner that the point-light source projects light directly toward the asymmetric concave structure. Each the asymmetric concave structure has a central lowest point. The point-light source is located right below the central lowest point. The direct back-lit light guide structure has advantages of better optical uniformity, higher illumination efficiency, fewer point-light sources required, lower cost, narrower side-frame and thinner light guide plate.

Abstract: A method for manufacturing a retardation film by using a dual-axial stretching process uses a PMMA to produce a cast film. The cast film is stretched in both a proceeding direction and a width direction simultaneously by 1.0˜5.0 times in both the length and the width. By using a predetermined annealing temperature to co-coordinate shrinking of the film in both directions simultaneously, decrease of the refraction ability caused by the stretching can be controlled. To attain high uniformity of the optical characteristics of the film, the surface temperature of the film during the stretching process is controlled within a predetermined range, then the optical variation thereof is improved, and thus the following optical characteristics are achieved: R0: 0˜3 nm and Rth: ?40˜0 nm; wherein R0=?*?Te+?*?Xe+?*?Ts+?*?Xs+C1 and Rth=a*?Te+b*?Xe+c*?Ts+d*?Xs+C2.

Abstract: A direct back-lit light guide structure is applied to a light guide plate and a back-lit module. The light guide plate has a light-ejection surface and a light-inject surface opposite to the light-ejection surface. The back-lit module comprises at least one point-light source located on the light-ejection surface. The direct back-lit light guide structure comprises at least one asymmetric concave structure formed on the light-ejection surface, and each the point-light source is corresponding to one asymmetric concave structure in such a manner that the point-light source projects light directly toward the asymmetric concave structure. Each the asymmetric concave structure has a central lowest point. The point-light source is located right below the central lowest point. The direct back-lit light guide structure has advantages of better optical uniformity, higher illumination efficiency, fewer point-light sources required, lower cost, narrower side-frame and thinner light guide plate.

Abstract: An optical microstructure film includes a base and multiple microstructure units. The base has at least a surface. The microstructure units are disposed in an array manner on the surface of the base. Each microstructure unit is formed to be a polygonal cone having the bottom face is attached to the surface of the base. The concave region is a surface part of a pseudo-spherical structure having a lower point on the microstructure unit. The distance from the lower point to the bottom face is defined as a second height, the sum of a radius of the spherical structure and the second height is defined as a first height, and the ratio of the second height to the first height is ranged from 0.1 to 0.8.

Abstract: A uniform reflective light-guide for accompanying an edge light source to form a backlight module for an LCD display includes a light-guiding layer and a reflective layer. The light-guiding layer further defines a light-introducing surface and a light-exiting surface. The light-introducing surface is to allow lights emitted from the edge light source to enter the light-guiding layer. The light-exiting surface perpendicular to the light-introducing surface is to allow at least a portion of the lights to leave the light-guiding layer. The reflective layer is to reflect the incident lights back to the light-guiding layer. The reflective layer and the light-guiding layer are manufactured integrally into a unique piece by a co-extrusion process so as to avoid possible existence of an air spacing in between. A reflective surface is defined to interface the reflective layer and the light-guiding layer, and a three-dimensional micro-structure is constructed on the reflective surface.

Abstract: A uniform reflective light-guide apparatus can accompany an optional edge light source and includes a light-guiding layer, a reflective layer and a light-exiting surface. The light-guiding layer further has a lateral side to define a light-introducing surface for allowing entrance of lights from the edge light source. The reflective layer is to reflect incident lights back to the light-guiding layer. The light-exiting surface perpendicular to the light-introducing surface is to allow at least a portion of the lights in the light-guiding layer to leave the light-guide apparatus. The reflective layer and the light-guiding layer are manufactured integrally by a co-extrusion process so as to avoid possible existence of an air spacing between the reflective layer and the light-guiding layer.

Abstract: A light-guide apparatus for accompanying an edge light source to form a backlight module for an LCD display includes an upper light-distributing layer, a middle light-guiding layer and a lower reflective layer. The light-guiding layer further defines a light-introducing surface for allowing lights emitted from the edge light source to enter the light-guiding layer. The reflective layer reflects the lights back to the light-guiding layer. A light-exiting surface for allowing at least a portion of the lights to leave the light-guiding layer is defined on the top surface of the light-distributing layer and is perpendicular to the light-introducing surface. The light-distributing layer, the light-guiding layer and the reflective layer are manufactured integrally into a unique piece by a co-extrusion process so as to avoid possible existence of air spacing in between. Three-dimensional micro-structures are constructed on a reflective surface interfacing the reflective layer and the light-guiding layer.

Abstract: The instant disclosure relates to a manufacturing method of a porous composite film. The manufacturing method includes processing a first porous film and a second porous film and includes the following steps: providing a pressing unit, a film-shaping unit, and a cooling unit; intersecting the first and second porous films at an angle; stacking the first and second porous films in forming a half-finished porous composite film; pressing the half-finished porous composite film by the pressing unit at a temperature T1 and under a tension S1; relieving the pressing force against the half-finished porous composite film thermally by the film-shaping unit at a temperature T2; and maintaining the half-finished porous composite film at a pre-determined tension by the cooling unit at a temperature T3.

Abstract: The backlight module comprises a light guide device, pluralities of light sources and at least one optical film. The light guide device further contains body, first microstructures, second microstructures, flat portions and diffusive beads. The first microstructures are disposed on reflective surface. A first point and a second point are disposed at two ends of the first microstructure with a first width (P1). Each flat portion has a gap (G) defined between two adjacent first microstructures. The second microstructure connects to the body by means of two edge portions. Two edge portions have a second width (P2) defined on the incident surface; wherein a first depth (H1) is defined to be the distance between the crossing point of two edge portions away from the incident surface. Pluralities of diffusive beads have weight Mb. The body has weight Mt. Then the equations of H 1 P 2 * P 1 G ? 0.288 and H 1 P 2 * P 1 G * M t M b ? 96.0 are satisfied.

Abstract: The instant disclosure relates to a manufacturing method of a porous composite film. The manufacturing method includes processing a first porous film and a second porous film and includes the following steps: providing a pressing unit, a film-shaping unit, and a cooling unit; intersecting the first and second porous films at an angle; stacking the first and second porous films in forming a half-finished porous composite film; pressing the half-finished porous composite film by the pressing unit at a temperature T1 and under a tension S1; relieving the pressing force against the half-finished porous composite film thermally by the film-shaping unit at a temperature T2; and maintaining the half-finished porous composite film at a pre-determined tension by the cooling unit at a temperature T3.

Abstract: A light guide device includes a main body, a first surface, and a plurality of cloud form microstructures. The plurality of cloud form microstructures is disposed on the first surface. Each of the cloud form microstructures has an outer contour which is consisted of at least three connecting points and a plurality of curved lines formed by connecting adjacent connecting points. Each the cloud form microstructure is defined with a maximum length (L), a maximum width (W) perpendicular to the maximum length, and a maximum height (H) perpendicular to both the maximum length and the maximum width; wherein, the ratio of L to W is between 1:1 and 5:1, and the ratio of L to H is between 2.5:1 and 36:1.

Abstract: A multi-layer fluororesin film includes a substrate layer having substantially parallel first and second surfaces, a first fluororesin layer formed on at least one of the first and second surfaces and a second fluororesin layer formed on the first fluororesin layer. The first fluororesin layer has a first fluorine polymer and a first adhesive polymer, and the ratio between the first fluorine polymer and the first adhesive polymer ranges from 0.05 to 0.9. The second fluororesin layer has a second fluorine polymer and a second adhesive polymer, and the ratio between the second fluorine polymer and the second adhesive polymer ranges from 1.2 to 19.