CN208283584U - A kind of brightness enhancement film and backlight module - Google Patents
A kind of brightness enhancement film and backlight module Download PDFInfo
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- CN208283584U CN208283584U CN201721909937.6U CN201721909937U CN208283584U CN 208283584 U CN208283584 U CN 208283584U CN 201721909937 U CN201721909937 U CN 201721909937U CN 208283584 U CN208283584 U CN 208283584U
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- brightness enhancement
- enhancement film
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Abstract
The utility model discloses a kind of brightness enhancement film and backlight modules, the brightness enhancement film includes substrate, which has a pair of opposite surface, respectively entering light face and light-emitting surface, entering light face includes one layer of coarse bottom surface, and the first rough surface of at least one layer formed on coarse bottom surface.The entering light face of the brightness enhancement film of the utility model has multilayer rough surface structure, when light is by brightness enhancement film provided by the utility model, need the rough surface by multilayer, enhance the diffusion of entering light, the mist degree in the brightness enhancement film entering light face of the utility model is improved, the generation of water ripples and interference fringe phenomenon is advantageously reduced, and since the substrate in the utility model is without adulterating particle, reduces the adverse effect to assembling yield.
Description
Technical field
The utility model relates to field of liquid crystal display more particularly to a kind of brightness enhancement film and backlight modules.
Background technique
Currently, brightness enhancement film is one of most important optical film in the backlight module for be widely used in liquid crystal display, increase
Bright film plays the role of including: raising light utilization efficiency, reduces light loss, improves backlight illumination, reduces power consumption etc., brightness enhancement film
Principle mainly light is concentrated using special prism structure.
Although the brightness enhancement film conventionally produced has the effect of improving light utilization efficiency, it is easy to produce More's effect
The structure of improved brightness enhancement film should be proposed in the prior art, such as in blast with Newton's ring phenomenon in order to avoid these phenomenons
The entering light face doping particle of film increases the diffusion effect in entering light face, or reduce to the entering light face of brightness enhancement film the place of smoothness
Reason.In former scheme, brightness enhancement film is easy to fall particle therein when cutting, and influences backlight assembling yield and is unfavorable for
Application in high-precision product.In latter scheme, although the entering light face of brightness enhancement film has certain roughness, its
The coarse structure for forming rough surface is relatively smooth, slightly in regularly arranged, is easy to produce water ripple phenomenon and interference fringe.
Utility model content
The main purpose of the utility model is that proposing a kind of brightness enhancement film and backlight module, it is intended to which solution increases in the prior art
Bright film, which is easy to produce in water ripple phenomenon and interference fringe and brightness enhancement film, adulterates the problem of particle influences backlight assembling yield.
To achieve the above object, the utility model provides a kind of brightness enhancement film, which includes: substrate, and substrate has one
To opposite surface, respectively entering light face and light-emitting surface, entering light face includes one layer of coarse bottom surface, and is formed on coarse bottom surface
The first rough surface of at least one layer.
Further, the number of plies of the first rough surface is one layer.
Further, by being arranged in coarse bottom surface, multiple salient points are formed the first rough surface and/or the first rough surface is by thick
Rough bottom surface is arranged multiple concave points and is formed.
Further, multiple salient points and/or multiple concave points are in the region of the first thickness on coarse bottom surface.
Further, the density of multiple salient points and/or multiple concave points on coarse bottom surface is not less than the first density threshold.
Further, the first rough surface on coarse bottom surface in radium-shine, sandblasting, etching, plating and coating at least
A kind of mode is formed.
Further, coarse bottom surface is formed in such a way that machinery digs point.
Further, the range of the mist degree of the first rough surface is 10%-80%.
Further, the mist degree range on the surface of the first rough surface and one layer of second rough surface composition is 10%-60%.
To achieve the above object, the utility model also provides a kind of backlight module, the backlight module include light source, setting exist
The light guide plate of light source side, the reflecting plate being arranged in below light guide plate, the lower diffuser plate being arranged in above light guide plate, and setting
Above lower diffuser plate such as above-mentioned brightness enhancement film.
The utility model discloses a kind of brightness enhancement film and backlight module, which includes substrate, which has a pair
Opposite surface, respectively entering light face and light-emitting surface, entering light face include one layer of coarse bottom surface, and formed on coarse bottom surface
At least one layer of first rough surface.The entering light face of the brightness enhancement film of the utility model has multilayer rough surface structure, and light is practical by this
When the brightness enhancement film of novel offer, need the rough surface by multilayer, enhance the diffusion of entering light, the brightness enhancement film of the utility model into
The mist degree of smooth surface is improved, and advantageously reduces the generation of water ripples and interference fringe phenomenon, and due to the utility model
In substrate without adulterating particle, reduce the adverse effect to assembling yield.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of brightness enhancement film provided by the embodiment of the utility model
Fig. 2 is the schematic diagram of the coarse bottom surface of brightness enhancement film in the prior art；
Fig. 3 is to be formed in brightness enhancement film provided by the embodiment of the utility model by the first rough surface is arranged on coarse bottom surface
Entering light face schematic diagram.
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
It should be appreciated that specific embodiment described herein is only used to explain the utility model, it is not used to limit this
Utility model.
The following brightness enhancement film of the present embodiment refers to being applied in backlight module to improve entire back light system luminous efficiency
For the film or thin slice of objective, there are mainly four types of type, general prismatic lens (normal prism sheet), multi-functional prism
Piece, micro-lens film and reflective polaroid (reflective polarizer) etc..The blast provided in the present embodiment
Film can be applied to various display backlight fields, and backlight module is made as one of building block, can be applicable to such as TV,
In the backlight module of the terminals such as display, mobile phone, smartwatch.However, it is to be understood that the brightness enhancement film of the present embodiment is answered
With the backlight display field that it is not limited to the above example, other field, such as lighting area, key-press backlight field etc. can also be
Deng.
In order to solve in the prior art, the coarse structure of the rough surface in brightness enhancement film positioned at entering light side is relatively smooth, nothing
The coarse structure of the problem of method effectively promotes haze value, causes concealing insufficient, is easy to produce water ripple phenomenon and the rough surface
The problems such as having certain regularity, being easy to produce interference fringe, the present embodiment propose a kind of haze value in entering light face to enhancing
Brightness enhancement film, compared with the existing technology in brightness enhancement film, the water ripple phenomenon and interference fringe of the brightness enhancement film in the present embodiment be existing
As the probability of generation is reduced, as shown in Figure 1, the brightness enhancement film includes: substrate 11, substrate has a pair of opposite surface,
Respectively entering light face 111 and light-emitting surface 112, entering light face 111 include one layer of coarse bottom surface 1111, and the shape on the coarse bottom surface
At the first rough surface of at least one layer 1112.
The light-emitting surface 112 of substrate in the present embodiment is the surface with prism structure as shown in Figure 1.In the present embodiment
In one example, substrate can be integrally formed monolith articles, be also possible to multilayered structure composition, such as substrate at least wraps
Include two layers, one layer is basement membrane, and one layer is the prism layer with micro-structure (prism structure), the surface opposite with prism layer on basement membrane
It is the coarse bottom surface 1111 (the entering light face of substrate) of substrate, the surface opposite with basement membrane is prism structure surface (base in prism layer
The light-emitting surface 1112 of material).The material of basement membrane can be PET (Polyethyleneterephthalate, poly terephthalic acid second
Diol ester) etc., prism layer can be to be coated on basement membrane by the way of coating before rolling and be formed.Wherein, coating material can
To be that special Acrylic Resin acrylic acid (class) resin material is formed with UV initiator mixed configuration.In one example, base
Film and the prism layer before not rolling can also be and formed by way of co-extrusion, i.e., during preparing substrate, layer to be rolled
After PET basement membrane co-extrusion, curtain coating forms substrate.In the present embodiment, basement membrane and layer to be rolled in substrate can also be using existing
There is the other modes setting in technology, the present embodiment does not have any restrictions to this.
In the present embodiment, it is contemplated that the number of plies of the first rough surface 1112 is more, then the step of preparation process is more, process
It is more complicated, so the number of plies of the first rough surface 1112 is preferably one layer.The formation of the coarse bottom surface 1111 of substrate can be using existing
Some modes, in one example, the formation of coarse bottom surface 1111 includes but is not limited to: the certain thickness in the entering light face of substrate
It is interior, particle is adulterated, so that the entering light face of substrate has certain bulge-structure, forms coarse bottom surface；Or, in the entering light face of substrate
In a manner of machinery system point, the roughness for increasing entering light face forms coarse bottom surface.
Further, in the present embodiment, the first rough surface 1112 is by the micro concavo-convex structure that is arranged in coarse bottom surface 1111
It is formed.Further, the first rough surface 1112 is formed by multiple salient points are arranged on coarse bottom surface 1111；Alternatively, first is coarse
Face 1112 is formed by multiple concave points are arranged on coarse bottom surface 1111；Alternatively, the first rough surface 1112 is by coarse bottom surface 1111
The multiple salient points of upper setting and concave point are formed.
In one example, the first rough surface be on coarse bottom surface 1111 by radium-shine or sandblasting or etching or plating or
Another layer of rough surface that the mode of coating is formed.
Wherein, in order to enhance the first rough surface bring atomizing effect, salient point and concave point on the first rough surface it is big
Small size is small than the mechanical hole fabrication on coarse bottom surface or because of the size dimension for the protrusion that particle adulterates and is formed.As shown in Fig. 2,
For the coarse bottom surface (entering light face) of brightness enhancement film in the prior art, from figure 2 it can be seen that the body structure surface of existing coarse bottom surface
It is relatively smooth, and arrange slightly in regularly arranged, therefore, it is easy to produce water ripple phenomenon and is easy to generate with prism or glass dry
Relate to striped.Using the brightness enhancement film of the present embodiment, the formation (as shown in Figure 3) of multiple salient points is set on the coarse bottom surface of the brightness enhancement film
First rough surface, as can be seen from Figure 3 the size dimension of salient point is smaller than the size of the coarse structure on coarse bottom surface, and first is thick
Matte is not completely covered by coarse bottom surface.The region of the first thickness of salient point and concave point on coarse bottom surface in one example
Interior, which can determine according to the integral thickness of substrate and the entering light face mist degree to be reached of brightness enhancement film.For example, convex
Thickness of the thickness of point and concave point on rough surface is no more than 2% etc. of base material thickness.
It is contemplated that the Density Distribution of the present embodiment bumps and concave point in coarse bottom surface 1111 will affect substrate entering light face
Haze value promoted, the density of salient point and concave point is too low, cannot reduce the coarse structure surface flatness of coarse bottom surface well
And upsetting coarse structure slightly is in regular arrangement, so in practice, the Density Distribution of salient point and concave point can be according to reality
Needs be adjusted, it is preferred that the density of concave point and salient point on coarse bottom surface 1111 in the present embodiment is lower than
First density threshold.It is conceivable that in concave point and constant bump size, the face that it can also be used to occupy of density
The ratio with the area in entire entering light face is accumulated to indicate, for example, limiting area shared by concave point and salient point is not less than entire entering light
The 20% of face area, 30% etc..In the present embodiment, the shape of salient point and concave point can be regular shape such as spheroidal, ellipse
Ball bodily form etc., can also be irregular shape such as polyhedron shape etc., and the present embodiment is not limited in this respect.
If then the material of salient point is selected as it is understood that form the first rough surface by the way of salient point
The surface of bright material, salient point can change via chemical substance so that the refraction coefficient of its surface refraction coefficient and substrate is close.?
In one example, the surface of salient point can also have reflexive (such as bump surface is the surface by polishing or being coated with).
In the present embodiment, the mist degree range of coarse bottom surface is in 2%-50%, and the mist degree of the first rough surface is in 10%-
80%, behind coarse bottom surface and the superposition of the first rough surface the mist degree effect that reaches in 10%-60%, relative to only have one layer it is coarse
For the structure of bottom surface, according to the entering light face (coarse the+the first rough surface of bottom surface) for the brightness enhancement film that the method for the present embodiment is formed
Mist degree and concealing are improved.
Further, the present embodiment also provides a kind of backlight module, which includes light source, is arranged in the light source one
The light guide plate of side, the reflecting plate being arranged in below the light guide plate, the lower diffuser plate being arranged in above the light guide plate, and setting exist
Above the lower diffuser plate as above-described embodiment propose in brightness enhancement film.
Substrate in brightness enhancement film provided in this embodiment has a pair of opposite surface, respectively entering light face and light-emitting surface,
Entering light face includes one layer of coarse bottom surface, and the first rough surface of at least one layer formed on coarse bottom surface.The utility model
The entering light face of brightness enhancement film has multilayer rough surface structure, when light is by brightness enhancement film provided by the utility model, needs to pass through multilayer
Rough surface, enhance the diffusion of entering light, the mist degree in the brightness enhancement film entering light face of the utility model is improved, advantageously reduces
The generation of water ripples and interference fringe phenomenon, and since the substrate in the utility model is without adulterating particle, it reduces to group
Fill the adverse effect of yield.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
Above-mentioned the utility model embodiment serial number is for illustration only, does not represent the advantages or disadvantages of the embodiments.Pass through above reality
The description of mode is applied, it is required that those skilled in the art can be understood that above-described embodiment method can add by software
The mode of general hardware platform is realized, naturally it is also possible to which by hardware, but in many cases, the former is more preferably embodiment.
The embodiments of the present invention are described above in conjunction with attached drawing, but the utility model is not limited to
The specific embodiment stated, the above mentioned embodiment is only schematical, rather than restrictive, this field it is common
Technical staff is not departing from the utility model aims and scope of the claimed protection situation under the enlightenment of the utility model
Under, many forms can be also made, these are belonged within the protection of the utility model.
Claims (10)
1. a kind of brightness enhancement film characterized by comprising substrate, the substrate have a pair of opposite surface, respectively entering light face
And light-emitting surface, the entering light face include one layer of coarse bottom surface, and at least one layer first formed on the coarse bottom surface is thick
Matte, the coarse bottom surface and first rough surface are used to be promoted the mist degree in the entering light face.
2. brightness enhancement film as described in claim 1, which is characterized in that the number of plies of first rough surface is one layer.
3. brightness enhancement film as claimed in claim 2, which is characterized in that first rough surface is by more in the coarse bottom surface setting
A salient point is formed and/or first rough surface is formed by adding multiple concave points in the coarse bottom surface.
4. brightness enhancement film as claimed in claim 3, which is characterized in that the multiple salient point and/or the multiple concave point are described
In the region of first thickness on coarse bottom surface.
5. brightness enhancement film as claimed in claim 3, which is characterized in that the multiple salient point and/or multiple concave points are described coarse
Density on bottom surface is not less than default first density threshold.
6. brightness enhancement film as described in any one in claim 1-5, which is characterized in that described first on the coarse bottom surface is thick
Matte is formed in a manner of at least one of radium-shine, sandblasting, etching, plating and coating.
7. brightness enhancement film as described in any one in claim 1-5, which is characterized in that the coarse bottom surface is in such a way that machinery digs point
It is formed.
8. brightness enhancement film as described in any one in claim 1-5, which is characterized in that the range of the mist degree of first rough surface is
10%-80%.
9. brightness enhancement film as described in any one in claim 1-5, which is characterized in that one layer of first rough surface and described coarse
The mist degree range on the surface of bottom surface composition is 10%-60%.
10. a kind of backlight module, which is characterized in that including light source, light guide plate that the light source side is arranged in, be arranged described
Reflecting plate below light guide plate, the lower diffuser plate being arranged in above the light guide plate, and be arranged above the lower diffuser plate
Such as the described in any item brightness enhancement films of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721909937.6U CN208283584U (en) | 2017-12-29 | 2017-12-29 | A kind of brightness enhancement film and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721909937.6U CN208283584U (en) | 2017-12-29 | 2017-12-29 | A kind of brightness enhancement film and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208283584U true CN208283584U (en) | 2018-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721909937.6U Active CN208283584U (en) | 2017-12-29 | 2017-12-29 | A kind of brightness enhancement film and backlight module |
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| Country | Link |
|---|---|
| CN (1) | CN208283584U (en) |
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2017
- 2017-12-29 CN CN201721909937.6U patent/CN208283584U/en active Active
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