CN102162868B - Optical sheet and backlight module with same - Google Patents
Optical sheet and backlight module with same Download PDFInfo
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- CN102162868B CN102162868B CN 201110114020 CN201110114020A CN102162868B CN 102162868 B CN102162868 B CN 102162868B CN 201110114020 CN201110114020 CN 201110114020 CN 201110114020 A CN201110114020 A CN 201110114020A CN 102162868 B CN102162868 B CN 102162868B
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Abstract
The invention provides an optical sheet, comprising a base material and a plurality of first optical patterns. The plurality of first optical patterns are protrudent and are arranged on a light outgoing surface of the base material randomly; the first optical patterns are in a snowman shape; snowman-shaped plane projection is formed by partially overlapping a first protruding part and a second protruding part which are round or elliptical; a plurality of second optical patterns and third optical patterns are arranged among the first optical patterns; and the shapes of the first optical patterns, the second optical patterns and the third optical patterns of the optical sheet are different and play the role of mutual complementation, thus improving the density of the formed optical patterns. Through the maximization of the density of the optical patterns on the optical sheets, the light diffusion and light gathering functions at different degrees can be realized by the optical patterns, thus obtaining high luminance. The invention also provides a backlight module with the optical sheet, thereby the backlight module with high luminance can be acquired.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly optical sheet and possess the backlight module of optical sheet.
Background technology
Recently, develop the various panel display apparatus that overcome leonard's tube (cathode ray tube) display device weight and volume shortcoming.Such panel display apparatus has liquid crystal indicator (Liquid Crystal Display, LCD), field-emission display device (Field Emission Display, FED), plasma display panel (Plasma Display Panel, PDP) and Organic Electricity laser display apparatus (Organic Luminescence Display, OLED) etc., and for these panel display apparatus, actively develop and be intended to the research that improves quality and realize large-scale picture.
Especially, in above-mentioned liquid crystal indicator (LCD), the problem such as the former high electric power that is used as its shortcoming and visual angle is improved gradually by positive research.
Different from other display devices, in liquid crystal indicator, the liquid crystal material that injects between TFT substrate and color filter is not the luminous photism material of oneself, but need to be subjected to the photosensitiveness material from external light source by regulating, therefore, must possess the independent illuminator for the irradiating liquid crystal display board, i.e. backlight module (Back Light Unit).
Fig. 1 is the backlight module sectional view of the liquid crystal indicator of prior art, and about side entering type, and Fig. 2 is the prismatic lens sectional view of Fig. 1.
Generally speaking, backlight module is divided into side entering type (Edge-light Method) and straight-down negative (Direct Lighting) according to the set-up mode of illuminating source.
As shown in Figure 1, backlight module 10 comprises light source portion 11, light guide plate 14, reflector plate 15 and optical device 20.
Light source reflecting plate 13 is along the outer peripheral face of light source 12 around light source 12, thereby the light that light source 12 produces reflexed to light guide plate 14 1 sides that will illustrate, so that the light that light source 12 produces is incident to light guide plate 14 effectively.
In the light that reflector plate 15 produces light source 12, see through light guide plate 14 and outgoing to the light at light guide plate 14 back sides, again reflex to light guide plate 14 1 sides.Therefore, the effect of reflector plate 15 is to improve optical efficiency.
Optical device 20 is made of diffusion sheet 21, optical sheet 22 and screening glass 23.
Be incident to diffusion sheet 21 from the light of light guide plate 14 outgoing, spread so that this incident light briliancy becomes evenly through diffusion sheet 21.Simultaneously, in seeing through the process of diffusion sheet 21, the briliancy of this incident light will reduce.
Optical sheet 22 is the prism of the standby triangular prism shape that repeats to form of mask at an upper portion thereof.Optical sheet 22 is assembled the light by diffusion sheet 21 diffusions, and vertically outgoing to superposed liquid crystal indicator.That is, optical sheet 22 is by the light of refraction loss briliancy in seeing through the process of diffusion sheet 21, to be focused to the direction vertical with the back side of liquid crystal indicator.Therefore, again improve the briliancy of the light that sees through optical sheet 22.
Be provided with screening glass 23 on the top of optical device 20, play the effect of protection optical sheet 22.
Fig. 2 is the sectional view of optical sheet shown in Figure 1.As shown in Figure 2, the optical sheet 22 of prior art comprises: base material 31 makes the light incident for the first time by light guide plate and diffusion sheet diffusion; Teat 32, have the isosceles triangle post shapes so that above-mentioned through the diffusion light advance; And above-mentioned teat 32 on above-mentioned base material 31 with the shape of stripes linear array.
In addition, the teat 32 of above-mentioned isosceles triangle post shapes have the spacing of 10～100 μ m, and along with the angle of trequetrous drift angle (α) is less, briliancy is higher, but the visual angle narrows down.
In addition, as shown in Figure 2, if the teat 32 of triangular prism shape arranges to the front, be that teat is towards LCD panel, although the light through diffusion that flows into by base material 31 forwards reflects and assembles, but be incident to the light of the dip plane of teat, can be because of inner full-reflection, and in the situation that fail to improve the place ahead briliancy and lose.
In order to address the above problem, the triangle of above-mentioned optical sheet 22 is set to the isosceles shape, or reverse prismatic lens is set so that the teat 32 of above-mentioned optical sheet 22 to light guide plate.But this method also fails to obtain satisfied effect aspect briliancy and visual angle.
Another kind of solution has, and forms the pattern of various shapes on optical sheet, but when forming pattern, key is how pattern to be set denselyr to improve the density of pattern on optical sheet.Therefore, need to develop the pattern with suitable shape and the technology that is formed at optical sheet.
Summary of the invention
Fundamental purpose of the present invention is to solve problems of the prior art, provide a kind of snowman's of having shape optical design optical sheet and possess the backlight module of this optical sheet, to optimize, to maximize the pattern density that is formed at optical sheet.
The objective of the invention is to be achieved by following technical proposals:
A kind of optical sheet is characterized in that, comprising:
Base material;
A plurality of the first optical designs, outstanding formation and random alignment are in the light-emitting face of described base material; This first optical design is snowman's shape; The plane projection of described snowman's shape is overlapped by the first teat and the second teat and forms; This first teat and the second teat are circular or oval.
A kind of backlight module that possesses optical sheet comprises: light source portion and optical device; Described light source portion is for generation of light; Described optical device by diffusion sheet, optical sheet is stacked consists of; Described diffusion sheet is used for the light of diffusion incident; Described optical sheet is used for assembling and spreading the light that sees through diffusion sheet; It is characterized in that, described optical sheet comprises:
Base material;
A plurality of the first optical designs, outstanding formation and random alignment are in the light-emitting face of described base material; This first optical design is snowman's shape; The plane projection of described snowman's shape is overlapped by the first teat and the second teat and forms; This first teat and the second teat are circular or oval.
Described the first teat and the second teat are circle; The diameter of the second teat is less than the diameter of the first teat; In the plane projection of described the first optical design, the center of circle of this first teat and the second teat connects the maximum length of the outline that is positioned at described plane projection on straight line and is the long axis length a of this first optical design; The diameter of this second teat is c; C/ (a-c) is in 40%～95% scope.
Have at least one to be oval in described the first teat and the second teat; The diameter of the second teat or long axis length are less than diameter or the long axis length of the first teat; In the plane projection of described the first optical design, the center of circle of this first teat and the second teat or the oval heart connect the maximum length of the outline that is positioned at described plane projection on straight line and are the major axis of this first optical design, and this long axis length is a; The length of the major axis of described the first optical design in the second teat is c; C/ (a-c) is in 40%～95% scope.
The long axis length a of described the first optical design is 80 μ m～120 μ m.
A plurality of the second optical designs are arranged between described the first optical design.
Described the second optical design is the pearl shape, and the plane projection of described the second optical design is circular or oval; The ratio of the long axis length a of the diameter of the plane projection of described the second optical design or long axis length and described the first optical design is in 30%～90% scope.
A plurality of the 3rd optical designs are arranged between described the first optical design and the second optical design.
Described the 3rd optical design is the pearl shape, and the plane projection of described the 3rd optical design is circular or oval; The diameter of the plane projection of the diameter of the plane projection of described the 3rd optical design or long axis length and described the second optical design or the ratio of major axis are in 20%～90% scope.
Form and random alignment has the pearl of a plurality of light-transmissive the light entrance face of described base material is outstanding.
The plane projection of described pearl is circular or oval, and the diameter of its plane projection or long axis length are between 1 μ m～10 μ m.
The Haze value that described pearl produces is in 4%～30% scope.
By the embodiment of the present invention, the shape of the first to the 3rd optical design of optical sheet is different, and second and third optical design plays the effect that mutually replenishes and is arranged between a plurality of the first optical designs, thereby can improve the density that forms optical design.By the maximization of optics pattern density on optical sheet, each optical design can be suitable for each diffusion of big or small light and light-focusing function, thereby obtains high briliancy.
By the embodiment of the present invention, the backlight module with above-mentioned optical sheet also is provided, thereby obtains the backlight module of high briliancy.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, does not consist of limitation of the invention.In the accompanying drawings:
Fig. 1 is the backlight module sectional view of the liquid crystal indicator of prior art;
Fig. 2 is the optical sheet sectional view of prior art;
Fig. 3 is the optical sheet structural representation of the first embodiment;
Fig. 4 is the optical sheet sectional view of the first embodiment;
Fig. 5 is the schematic diagram of the first optical design in optical sheet;
Fig. 6 is the optical sheet section of structure of the second embodiment;
Fig. 7 is the backlight module summary section that possesses optical sheet.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in further details.At this, exemplary embodiment of the present invention and explanation thereof are used for explanation the present invention, but not as a limitation of the invention.
Fig. 3 is the optical sheet structural representation of the first embodiment.Fig. 4 is the sectional view of Fig. 3, and Fig. 5 is the schematic diagram that is formed at the first optical design in the optical sheet of Fig. 3 and Fig. 4.
As shown in Figures 3 and 4, optical sheet 100 comprises: base material 110; A plurality of the first optical designs 120, outstanding formation and random alignment are in the light-emitting face of described base material 110; This first optical design 120 is snowman's shape; The plane projection of described snowman's shape is overlapped by the first teat and the second teat and forms; This first teat and the second teat are circular or oval.
As shown in the figure, also can comprise in this optical sheet 100: a plurality of the second optical designs 130 and a plurality of the 3rd optical design 140; These a plurality of second optical designs 130 and a plurality of the 3rd optical design 140 are arranged between described the first optical design.
The first to the 3rd optical design has from the outstanding structure of the upper side of base material 110, and the first optical design 120 is snowman's shape, the second optical design 130 and the 3rd optical design 140 are the pearl shape, and from the first optical design to the three optical designs, the size of pattern becomes more and more less.That is, the first optical design 120 maximums, secondly, the second optical design 130 is less than the first optical design 120, but greater than the 3rd optical design 140.
If the shape that is as the criterion to above-mentioned each optical design with plane projection describes, the first optical design 120 has snowman's shape, and the first teat in the plane projection of this snowman's shape and the second teat are circular or oval.Second and third optical design 130,140 is the pearl shape, and its plane projection is circular or oval.And if can suitably fill space between all the other first optical designs 120, this second and third optical design 130,140 shape also can be unrestricted.
Be formed at the first to the 3rd optical design 120,130,140 on the base material 110 of optical sheet 100 of the present invention, form each lenticule.That is, the lenticule of the first optical design 120 for having snowman's shape, and second and third optical design 130,140 is for being arranged at the lenticule with pearl shape in space between the first optical design 120.
Due to, the first optical design 120 random alignment are on base material 110, and the second optical design 130 and the 3rd optical design 140 are arranged at the space between the first optical design 120.As mentioned above, the first optical design 120 has snowman's shape, and second and third optical design 130,140 has the pearl shape and be arranged between the first optical design, and therefore, maximizing is arranged at the density of the optical design on base material 110.
That is, optical sheet 100 comprises the optical design with all size and shape, i.e. optical design 120,130,140, in addition, these optical designs, namely optical design 120,130,140 big or small different, and different patterns can replenish mutually.Therefore, can improve to greatest extent and be formed at the density with first to the 3rd optical design on the long-pending optical sheet 100 of certain surface.Optical sheet 100 with optical design of various shapes and size can be assembled to greatest extent and spread from the light of light source (not shown) incident, thereby can obtain maximum briliancy under the prerequisite that guarantees certain visual angle.
Optical design on base material 110 both can be by the first to the 3rd optical design 120,130,140 integrally formed, also coated thin film and forming on base material 110.
The plate that base material 110 consists of for the transparent material by light-transmissive, for example, can be consisted of by polycarbonate (poly carbonate) class material, polysulfones (poly sulfone) class material, polyacrylate (poly acrylate) class material, polystyrene (poly styrene) class material, Polyvinylchloride (poly vinyl chloride) class material, polyvinyl alcohol (PVA) (polyvinyl alcohol) class material, polynorbornene (poly norbornene) class material, dacron (poly ester) class material.Preferably, transparent base 110 is by formations such as polyethylene terephthalate (poly ethylene terephtalate) or PENs (poly ethylene naphthalate).
Optical design 120,130,140 can be made by the heat reactive resins such as acrylic resin, potassamide esters of gallic acid resin and dacron resinoid or the ultraviolet curable resins such as Epoxy Acrylates resin, urethane acrylate resinoid and silica acrylic acid esters resin.
Fig. 5 is the schematic diagram of the first optical design 120 in above-mentioned optical sheet 100.As shown in the figure, the first optical design 120 is snowman's shape.As previously mentioned, the plane projection of so-called snowman's shape is to be overlapped by the first teat and the second teat to form.Described the first teat 121 and the second teat 122 are circle; The diameter of the second teat 122 is less than the diameter of the first teat 121; In the plane projection of described the first optical design 120, the center of circle of this first teat 121 and the second teat 122 connects the maximum length of the outline that is positioned at described plane projection on straight line and is the long axis length a of this first optical design; The diameter of this second teat is c; C/ (a-c) is in 40%～95% scope.
Certainly, first and second teat that consists of the plane projection of described snowman's shape may not be positive circle, can also be oval.Suppose to have at least one to be oval in described the first teat and the second teat; The diameter of the second teat or long axis length are less than diameter or the long axis length of the first teat; In the plane projection of described the first optical design, the center of circle of this first teat and the second teat or the oval heart connect the maximum length of the outline that is positioned at described plane projection on straight line and are the major axis of this first optical design, and this long axis length is a; The length of the major axis of described the first optical design in the second teat is c; C/ (a-c) is in 40%～95% scope.
Preferably, the long axis length a of the first optical design 120 is within 80～120 μ m scopes.
If the plane projection of the second optical design 130 is circular or oval, the diameter of its plane projection or long axis length be the first optical design 120 long axis length a 30～90%.And if the plane projection of the 3rd optical design 140 is circular or oval, the diameter of its plane projection or long axis length are 20～90% of the diameter of plane projection of the second optical design 130 or long axis length.
According to the structural design of above-mentioned the first to the 3rd optical design of the present invention, when using optical sheet, can make the surperficial area that consists of lens shape of optical sheet reach maximization, thereby can reach the effect that increases the brightness of optical sheet printing opacity.
Fig. 6 is the optical sheet section of structure of second embodiment of the invention.
The optical sheet of the present embodiment and Fig. 3 be to the difference of the optical sheet of the first embodiment shown in Figure 5, possesses pearl (bead) 150 at the light entrance face of base material 110.All the other are with as identical to structure shown in Figure 5 in Fig. 3, thereby give identical Reference numeral to identical structure, and therefore, the part of repetition does not repeat them here.
Described pearl 150 is made by the material of light-transmissive, such as being made by the heat reactive resins such as acrylic resin, potassamide esters of gallic acid resin and dacron resinoid or the ultraviolet curable resins such as Epoxy Acrylates resin, urethane acrylate resinoid and silica acrylic acid esters resin.
The plane projection of pearl 150 is circular or oval, and the diameter of its plane projection or long axis length are between 1 μ m～10 μ m.And this pearl 150 produces the Haze value within 4～30% scopes at base material 110 back sides.Described Haze value is light diffusion value, is a kind of bioassay standard when using optical sheet.
As mentioned above, by possess a plurality of pearls 150 on optical sheet 170, suitably diffusion is incident to the light of optical sheet 170 from light source (not shown), thereby obtains uniform briliancy.If becoming uniform light, briliancy sees through the first to the 3rd optical design 120,130,140 by base material 110, light will be evenly distributed to whole optical sheet 170, and briliancy is also even, and therefore, the light that sees through optical design 120,130,140 outgoing is more favourable aspect briliancy and visual angle.
Fig. 7 possesses Fig. 3 to the summary section of the backlight module of optical sheet shown in Figure 5.
As shown in the figure, this backlight module 200 comprises light source portion 210, light guide plate 220, reflector plate 230 and optical sheet 240.
Light source portion 210 is arranged at a side of backlight module 200, comprising: light source 211, the light of liquid crystal board (not shown) that be provided for throwing light on; Light source reflecting plate 212 is arranged at the radial outside of light source 211.Backlight module in this embodiment adopts side entering type.Certainly, light source portion 210 also can be arranged at the two sides of light guide plate 220.Above-mentioned side entering type is a wherein example and unrestricted the present invention just, though not shown, backlight module also can adopt straight-down negative.
Light source 211 can utilize cold-cathode fluorescence lamp or external electrode fluorescent lamp (External Electrode Fluorescent Lamp, EEFL).Certainly, also can utilize light emitting diode (LED).
Light source reflecting plate 212 will reflex to the side of light guide plate 220 from the light of light source 211 radiation, so that light is incident to light guide plate 220.Therefore, for reflected light more effectively, light source reflecting plate 212 can be at its surface-coated silver materials such as (Ag).
Light guide plate 220 makes by being arranged at the light entrance face of its side the liquid crystal board that becomes evenly and be directed to the section of being located thereon from light source 211 incident lights.Utilize light guide plate 220 to utilize total reflection principle to make after incident light becomes evenly, be emitted to liquid crystal board one side by its exit facet.
Light guide plate 220 generally is made of transparent acrylic resins such as polymethylmethacrylates (Poly Methyl MethAcrylate, PMMA).PMMA is because intensity is high and non-friable, and distortion is few, and is lightweight, and the high material of visible rays transmitance.
Reflecting plate 230 is arranged at light guide plate 220 bottoms, plays the effect that the light that will arrive light guide plate 220 bottoms reflexes to light guide plate 220 1 sides again.In order to improve reflectivity, reflector plate 230 is coated with silver (Ag) on the stock that is made of aluminium etc.In addition, also be coated with titanium in order to prevent temperature distortion.
Backlight module 200 comprises the optical device 240 that is arranged between light guide plate 220 and liquid crystal board.Optical device 240 makes from the light of light guide plate 220 outgoing and effectively is incident to the visible surface (viewing plane) of liquid crystal board to improve briliancy.Especially, optical sheet 100 plays the effect that improves briliancy by optically focused.
Optical device 240 is made of diffusion sheet 241, optical sheet 100 and screening glass 242.
Diffusion sheet 241 diffusions and gathering are by the light of light guide plate 220 incidents, so that briliancy becomes evenly and enlarge the visual angle.But in seeing through the process of diffusion sheet 241, the briliancy of light will reduce.
As Fig. 7, Fig. 3 and shown in Figure 4, optical sheet 100 comprises: base material 110; A plurality of the first optical designs 120, outstanding formation and random alignment are in the light-emitting face of described base material 110; This first optical design 120 is snowman's shape; The plane projection of described snowman's shape is overlapped by the first teat and the second teat and forms; This first teat and the second teat are circular or oval.
As shown in the figure, also can comprise in this optical sheet 100: a plurality of the second optical designs 130 and a plurality of the 3rd optical design 140; These a plurality of second optical designs 130 and a plurality of the 3rd optical design 140 are arranged between described the first optical design.
The first to the 3rd optical design has from the outstanding structure of the upper side of base material 110, and the first optical design 120 is snowman's shape, the second optical design 130 and the 3rd optical design 140 are the pearl shape, and from the first optical design to the three optical designs, the size of pattern becomes more and more less.That is, the first optical design 120 maximums, secondly, the second optical design 130 is less than the first optical design 120, but greater than the 3rd optical design 140.
If the shape that is as the criterion to above-mentioned each optical design with plane projection describes, the first optical design 120 has snowman's shape, and the first teat in the plane projection of this snowman's shape and the second teat are circular or oval.Second and third optical design 130,140 is the pearl shape, and its plane projection is circular or oval.And if can suitably fill space between all the other first optical designs 120, this second and third optical design 130,140 shape also can be unrestricted.
Be formed at the first to the 3rd optical design 120,130,140 on the base material 110 of optical sheet 100 of the present invention, form each lenticule.That is, the lenticule of the first optical design 120 for having snowman's shape, and second and third optical design 130,140 is for being arranged at the lenticule with pearl shape in space between the first optical design 120.
Due to, the first optical design 120 random alignment are on base material 110, and the second optical design 130 and the 3rd optical design 140 are arranged at the space between the first optical design 120.As mentioned above, the first optical design 120 has snowman's shape, and second and third optical design 130,140 has the pearl shape and be arranged between the first optical design, and therefore, maximizing is arranged at the density of the optical design on base material 110.
That is, optical sheet 100 comprises the optical design with all size and shape, i.e. optical design 120,130,140, in addition, these optical designs, namely optical design 120,130,140 big or small different, and different patterns can replenish mutually.Therefore, can improve to greatest extent and be formed at the density with first to the 3rd optical design on the long-pending optical sheet 100 of certain surface.Optical sheet 100 with optical design of various shapes and size can be assembled to greatest extent and spread from the light of light source (not shown) incident, thereby can obtain maximum briliancy under the prerequisite that guarantees certain visual angle.
Optical design on base material 110 both can be by the first to the 3rd optical design 120,130,140 integrally formed, also coated thin film and forming on base material 110.
The plate that base material 110 consists of for the transparent material by light-transmissive, for example, can be consisted of by polycarbonate (poly carbonate) class material, polysulfones (poly sulfone) class material, polyacrylate (poly acrylate) class material, polystyrene (poly styrene) class material, Polyvinylchloride (poly vinyl chloride) class material, polyvinyl alcohol (PVA) (poly vinyl alcohol) class material, polynorbornene (poly norbornene) class material, dacron (poly ester) class material.Preferably, transparent base 110 is by formations such as polyethylene terephthalate (poly ethylene terephtalate) or PENs (poly ethylene naphthalate).
Optical design 120,130,140 can be made by the heat reactive resins such as acrylic resin, potassamide esters of gallic acid resin and dacron resinoid or the ultraviolet curable resins such as Epoxy Acrylates resin, urethane acrylate resinoid and silica acrylic acid esters resin.
Fig. 5 is the schematic diagram of the first optical design 120 in above-mentioned optical sheet 100.As shown in the figure, the first optical design 120 is snowman's shape.As previously mentioned, the plane projection of so-called snowman's shape is to be overlapped by the first teat and the second teat to form.Described the first teat 121 and the second teat 122 are circle; The diameter of the second teat 122 is less than the diameter of the first teat 121; In the plane projection of described the first optical design 120, the center of circle of this first teat 121 and the second teat 122 connects the maximum length of the outline that is positioned at described plane projection on straight line and is the long axis length a of this first optical design; The diameter of this second teat is c; C/ (a-c) is in 40%～95% scope.
Certainly, first and second teat that consists of the plane projection of described snowman's shape may not be positive circle, can also be oval.Suppose to have at least one to be oval in described the first teat and the second teat; The diameter of the second teat or long axis length are less than diameter or the long axis length of the first teat; In the plane projection of described the first optical design, the center of circle of this first teat and the second teat or the oval heart connect the maximum length of the outline that is positioned at described plane projection on straight line and are the major axis of this first optical design, and this long axis length is a; The length of the major axis of described the first optical design in the second teat is c; C/ (a-c) is in 40%～95% scope.
Preferably, the long axis length a of the first optical design 120 is within 80～120 μ m scopes.
If the plane projection of the second optical design 130 is circular or oval, the diameter of its plane projection or long axis length be the first optical design 120 long axis length a 30～90%.And if the plane projection of the 3rd optical design 140 is circular or oval, the diameter of its plane projection or long axis length are 20～90% of the diameter of plane projection of the second optical design 130 or major axis.
Above-described embodiment is only unrestricted in order to the present invention to be described; those of ordinary skill in the art is to be understood that; can modify, be out of shape or be equal to replacement to the present invention, and not break away from the spirit and scope of the present invention, it all should be encompassed in the middle of claim protection domain of the present invention.
Claims (16)
1. an optical sheet, is characterized in that, comprising:
Base material;
A plurality of the first optical designs, outstanding formation and random alignment are in the light-emitting face of described base material; This first optical design is snowman's shape; The plane projection of described snowman's shape is overlapped by the first teat and the second teat and forms; This first teat and the second teat are circular or oval;
A plurality of the second optical designs are arranged between described the first optical design;
When described the first teat and the second teat are circle; The diameter of the second teat is less than the diameter of the first teat; In the plane projection of described the first optical design, the center of circle of this first teat and the second teat connects the maximum length of the outline that is positioned at described plane projection on straight line and is the major axis of this first optical design, and this long axis length is a; The diameter of this second teat is c; C/(a-c) in 40% ~ 95% scope;
Have at least one to be oval in described the first teat and the second teat; The diameter of the second teat or long axis length are less than diameter or the long axis length of the first teat; In the plane projection of described the first optical design, the center of circle of this first teat and the second teat or the oval heart connect the maximum length of the outline that is positioned at described plane projection on straight line and are the major axis of this first optical design, and this long axis length is a; The length of the major axis of described the first optical design in the second teat is c; C/(a-c) in 40% ~ 95% scope.
2. a kind of optical sheet as claimed in claim 1 is characterized in that:
The long axis length a of described the first optical design is 80 μ m ~ 120 μ m.
3. a kind of optical sheet as claimed in claim 1 is characterized in that:
Described the second optical design is the pearl shape, and the plane projection of described the second optical design is circular or oval; The ratio of the long axis length a of the diameter of the plane projection of described the second optical design or long axis length and described the first optical design is in 30% ~ 90% scope.
4. a kind of optical sheet as claimed in claim 1, is characterized in that, also comprises:
A plurality of the 3rd optical designs are arranged between described the first optical design and the second optical design.
5. a kind of optical sheet as claimed in claim 4 is characterized in that:
Described the 3rd optical design is the pearl shape, and the plane projection of described the 3rd optical design is circular or oval; The diameter of the plane projection of the diameter of the plane projection of described the 3rd optical design or long axis length and described the second optical design or the ratio of long axis length are in 20% ~ 90% scope.
6. a kind of optical sheet as claimed in claim 1 is characterized in that:
Form and random alignment has the pearl of a plurality of light-transmissive the light entrance face of described base material is outstanding.
7. a kind of optical sheet as claimed in claim 6 is characterized in that:
The plane projection of described pearl is circular or oval, and the diameter of its plane projection or long axis length are between 1 μ m ~ 10 μ m.
8. a kind of optical sheet as claimed in claim 6 is characterized in that:
The Haze value that described pearl produces is in 4% ~ 30% scope.
9. a backlight module that possesses optical sheet, comprising: light source portion and optical device; Described light source portion is for generation of light; Described optical device by diffusion sheet, optical sheet is stacked consists of; Described diffusion sheet is used for the light of diffusion incident; Described optical sheet is used for assembling and spreading the light that sees through diffusion sheet; It is characterized in that, described optical sheet comprises:
Base material;
A plurality of the first optical designs, outstanding formation and random alignment are in the light-emitting face of described base material; This first optical design is snowman's shape; The plane projection of described snowman's shape is overlapped by the first teat and the second teat and forms; This first teat and the second teat are circular or oval;
A plurality of the second optical designs are arranged between described the first optical design;
When described the first teat and the second teat are circle; The diameter of the second teat is less than the diameter of the first teat; In the plane projection of described the first optical design, the center of circle of this first teat and the second teat connects the maximum length of the outline that is positioned at described plane projection on straight line and is the major axis of this first optical design, and this long axis length is a; The diameter of this second teat is c; C/(a-c) in 40% ~ 95% scope;
Have at least one to be oval in described the first teat and the second teat; The diameter of the second teat or long axis length are less than diameter or the long axis length of the first teat; In the plane projection of described the first optical design, the center of circle of this first teat and the second teat or the oval heart connect the maximum length of the outline that is positioned at described plane projection on straight line and are the major axis of this first optical design, and this long axis length is a; The length of the major axis of described the first optical design in the second teat is c; C/(a-c) in 40% ~ 95% scope.
10. a kind of backlight module that possesses optical sheet as claimed in claim 9 is characterized in that:
The long axis length a of described the first optical design is 80 μ m ~ 120 μ m.
11. a kind of backlight module that possesses optical sheet as claimed in claim 9 is characterized in that:
Described the second optical design is the pearl shape, and the plane projection of described the second optical design is circular or oval; The ratio of the long axis length a of the diameter of the plane projection of described the second optical design or long axis length and described the first optical design is in 30% ~ 90% scope.
12. a kind of backlight module that possesses optical sheet as claimed in claim 9 is characterized in that, also comprises:
A plurality of the 3rd optical designs are arranged between described the first optical design and the second optical design.
13. a kind of backlight module that possesses optical sheet as claimed in claim 12 is characterized in that:
Described the 3rd optical design is the pearl shape, and the plane projection of described the 3rd optical design is circular or oval; The diameter of the plane projection of the diameter of the plane projection of described the 3rd optical design or long axis length and described the second optical design or the ratio of long axis length are in 20% ~ 90% scope.
14. a kind of backlight module that possesses optical sheet as claimed in claim 9 is characterized in that:
Form and random alignment has the pearl of a plurality of light-transmissive the light entrance face of described base material is outstanding.
15. a kind of backlight module that possesses optical sheet as claimed in claim 14 is characterized in that:
The plane projection of described pearl is circular or oval, and the diameter of its plane projection or long axis length are between 1 μ m ~ 10 μ m.
16. a kind of backlight module that possesses optical sheet as claimed in claim 14 is characterized in that:
The Haze value that described pearl produces is in 4% ~ 30% scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110114020 CN102162868B (en) | 2011-05-04 | 2011-05-04 | Optical sheet and backlight module with same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110114020 CN102162868B (en) | 2011-05-04 | 2011-05-04 | Optical sheet and backlight module with same |
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| Publication Number | Publication Date |
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| CN102162868A CN102162868A (en) | 2011-08-24 |
| CN102162868B true CN102162868B (en) | 2013-05-22 |
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| CN 201110114020 Active CN102162868B (en) | 2011-05-04 | 2011-05-04 | Optical sheet and backlight module with same |
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| CN (1) | CN102162868B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9933133B2 (en) | 2013-11-14 | 2018-04-03 | Coretronic Corporation | Light adjusting sheet and backlight module using the same |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540290B (en) * | 2012-02-03 | 2014-04-16 | 凯鑫森(上海)功能性薄膜产业有限公司 | Diffusing piece and liquid crystal display device |
| KR102214157B1 (en) * | 2018-10-15 | 2021-02-10 | 주식회사 엘엠에스 | Optical film |
| TWI710837B (en) * | 2019-11-21 | 2020-11-21 | 友達光電股份有限公司 | Backlight module |
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| CN1967345A (en) * | 2005-11-19 | 2007-05-23 | 三星电子株式会社 | Backlight unit and liquid crystal display comprising the same |
| CN1991416A (en) * | 2005-12-29 | 2007-07-04 | Lg.菲利浦Lcd株式会社 | Optical sheet and backlight unit using the same |
| CN101936499A (en) * | 2009-06-29 | 2011-01-05 | 奇菱科技股份有限公司 | Optical film and application thereof |
| CN101960335A (en) * | 2008-03-21 | 2011-01-26 | 木本股份有限公司 | Light controlling film, backlight device using light controlling film, and method for manufacturing die for forming uneven pattern |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202049249U (en) * | 2011-05-04 | 2011-11-23 | 上海凯鑫森产业投资控股有限公司 | Optical sheet and backlight module with same |
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2011
- 2011-05-04 CN CN 201110114020 patent/CN102162868B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1967345A (en) * | 2005-11-19 | 2007-05-23 | 三星电子株式会社 | Backlight unit and liquid crystal display comprising the same |
| CN1991416A (en) * | 2005-12-29 | 2007-07-04 | Lg.菲利浦Lcd株式会社 | Optical sheet and backlight unit using the same |
| CN101960335A (en) * | 2008-03-21 | 2011-01-26 | 木本股份有限公司 | Light controlling film, backlight device using light controlling film, and method for manufacturing die for forming uneven pattern |
| CN101936499A (en) * | 2009-06-29 | 2011-01-05 | 奇菱科技股份有限公司 | Optical film and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9933133B2 (en) | 2013-11-14 | 2018-04-03 | Coretronic Corporation | Light adjusting sheet and backlight module using the same |
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| Publication number | Publication date |
|---|---|
| CN102162868A (en) | 2011-08-24 |
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Address after: 200122, room 838, 101-18 Dongfang Road, Shanghai, Pudong New Area Applicant after: Shanghai CCS Industrial Investment Holding Co., Ltd. Address before: 201100, 188, Exhibition Road, East Industrial Zone, Cao Jing Zhen, Shanghai, Jinshan District Applicant before: Shanghai CCS Industrial Investment Holding Co., Ltd. |
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Owner name: CCS (SHANGHAI) FUNCTIONAL FILMS INDUSTRY CO., LTD. Free format text: FORMER OWNER: SHANGHAI CCS INDUSTRIAL INVESTMENT HOLDING CO., LTD. Effective date: 20130402 |
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Address after: No. 196 Hezhan Road, Caojing Town, Jinshan District, Shanghai, 201507 Patentee after: Kaixinsen (Shanghai) functional film industry Co.,Ltd. Address before: No. 188 Hezhan Road, Caojing Town, Jinshan District, Shanghai, 201507 Patentee before: CCS (SHANGHAI) FUNCTIONAL FILMS INDUSTRY Co.,Ltd. |
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