CN208351033U - A kind of composite bright enhancement film and backlight module - Google Patents
A kind of composite bright enhancement film and backlight module Download PDFInfo
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- CN208351033U CN208351033U CN201821139937.7U CN201821139937U CN208351033U CN 208351033 U CN208351033 U CN 208351033U CN 201821139937 U CN201821139937 U CN 201821139937U CN 208351033 U CN208351033 U CN 208351033U
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- Prior art keywords
- prismatic lens
- enhancement film
- prism structure
- bright enhancement
- binder
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Abstract
The utility model provides a kind of composite bright enhancement film, including at least the first prismatic lens and the second prismatic lens, and the second prismatic lens include PET base material and multiple high prism structures and low prism structure in PET base material.First prismatic lens include PET base material and multiple prism structures in PET base material, and the prism structure shape and size are identical.Coating is set in the lower surface of the first prismatic lens, coating is resin colloid, can play the role of protection and light transmission.Binder is set away from the face of the first prismatic lens in coating, the top of high prism structure is contacted with binder with for being adhesively fixed, low prism structure is not contacted with binder.Gathered by low prism structure deflecting light beams to the centre of composite bright enhancement film, to promote luminance.Fixation is contacted with binder for the ease of high prism structure, may be configured as cylindricality or trapezoidal at the top of high prism structure.The utility model also proposed a kind of backlight module including above-mentioned composite bright enhancement film.
Description
Technical field
The utility model relates to optical film and backlight technology fields, and in particular to a kind of composite bright enhancement film and backlight module.
Background technique
In liquid crystal display (LCD), LCD panel itself does not shine, and needs to provide one in the lower section of LCD panel
Backlight module is allowed to obtain enough brightness and contrast, and then realize display with area source needed for providing LCD panel
Function.
Bright enhancement film is the common structure in backlight module, generally comprises bright enhancement film and lower bright enhancement film, can issue light source
Dispersed light to positive direction assemble, to improve display brightness.With the demand to product is lightening and technique is simplified, compound increasing
Light film is developed and applies, and has the advantages that thinner thickness and assembling are simple.Commonly increase compared to the two panels in backlight module
The brightness effects of light film, 10% or more the brightness difference of current composite bright enhancement film, cause to reduce market share.
Traditional composite bright enhancement film structure is as shown in Figure 1 comprising the mutually perpendicular first prismatic lens 1a of prism angle and
Second prismatic lens 2a concentrates light to increase luminance (luminance is the luminous intensity on unit projected area), and connection first
The binder 3a of prismatic lens 1a and the second prismatic lens 2a.Binder is packed at the top of the prism structure 20a of second prismatic lens 2a
The inside of 3a.Optical path as shown in Fig. 2, the parallel light beam L1 and L2 of two beams from the prism structure 20a of the second prismatic lens 2a respectively from
Non-stick interface and bond regions are projected.Light beam L1 is propagated from optically denser medium to optically thinner medium, and emergent light is to middle part deviation, i.e., in
Portion's optically focused.Light beam L2 from the top of prism structure 20a inject binder 3a, the refractive index of two kinds of materials all between 1.4-1.5,
Therefore the deviation angle of its emergent light is smaller.Therefore, the top spotlight effect for being placed in the prism structure 20a in binder 3a is unknown
It is aobvious, to affect overall brightness effect.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of composite bright enhancement film, the first prismatic lens and second are included at least
Prismatic lens.Second prismatic lens include PET substrate and multiple high prism structures and low prism structure on PET substrate,
The low prism structure is set between the adjacent high prism structure.High prism structure is contacted with binder, and low prism structure is not
It is contacted with binder, propagates light from optically denser medium to optically thinner medium by low prism structure, it can be to composite bright enhancement film
Centre is gathered, to promote luminance.
In order to solve the above-mentioned technical problem, the solution of the utility model is:
A kind of composite bright enhancement film includes at least the first prismatic lens and the second prismatic lens, and the second prismatic lens include PET substrate
Multiple high prism structures and low prism structure with being located on PET substrate, are arranged institute between the adjacent high prism structure
State low prism structure；Coating is set in the lower surface of first prismatic lens, in the coating away from first prismatic lens
Binder is arranged in face, and the top of the high prism structure is contacted with the binder for being adhesively fixed.
As a kind of improvement of composite bright enhancement film provided by the utility model, the first prismatic lens include PET substrate and are located at
Multiple prism structures on PET substrate, the prism structure shape and size are identical.
As a kind of improvement of composite bright enhancement film provided by the utility model, the top of the high prism structure be cylindricality or
It is trapezoidal.
As a kind of improvement of composite bright enhancement film provided by the utility model, the low prism structure not with the binder
Contact.
As a kind of improvement of composite bright enhancement film provided by the utility model, the coating is resin colloid.
A kind of backlight module, including light guide plate, including above-mentioned composite bright enhancement film, the composite bright enhancement film are placed in the leaded light
The side of the light-emitting surface of plate.
Compared with prior art, the utility model has the beneficial effects that
The utility model provides a kind of composite bright enhancement film, includes at least at least the first prismatic lens and the second prismatic lens, the
Two prismatic lens include PET substrate and multiple high prism structures and low prism structure on PET substrate, in the first prism
Coating is arranged in the lower surface of piece, and coating is resin colloid, can play the role of protection and light transmission.In coating away from the first prismatic lens
Face be arranged binder, the top of high prism structure contacted with binder be used for be adhesively fixed, low prism structure not with binder
Contact.It is propagated by low prism structure deflecting light beams from optically denser medium to optically thinner medium to gather to the centre of composite bright enhancement film,
To promote luminance.Fixation is contacted with binder for the ease of high prism structure, may be configured as cylindricality at the top of high prism structure
Or it is trapezoidal.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of composite bright enhancement film of the prior art；
Fig. 2 is the light path schematic diagram of the structural schematic diagram and composite bright enhancement film shown in FIG. 1 in Fig. 1 shown in A；
Fig. 3 be the utility model proposes a kind of composite bright enhancement film structural schematic diagram；
Fig. 4 be structural schematic diagram in Fig. 3 shown in B and the utility model proposes the optical path of composite bright enhancement film a kind of show
It is intended to；
Fig. 5 is a kind of prism structure schematic diagram of prismatic lens.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and examples, the examples of the embodiments are in attached drawing
In show, in which the same or similar labels are throughly indicated same or similar elements or with the same or similar functions
Element.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to for explaining the utility model, and cannot understand
For limitations of the present invention.
In the description of the present invention, it should be understood that term " length ", " width ", "upper", "lower", " preceding ",
The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" be based on
Orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
The limitation of the utility model.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
Calmly ", the terms such as " setting " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；
It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also may be used also indirectly connected through an intermediary
To be the interaction relationship of connection or two elements inside two elements.For the ordinary skill in the art,
The concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
Embodiment 1
As shown in figure 3, its display the utility model proposes a kind of composite bright enhancement film, including at least two layers of prismatic lens.?
In the present embodiment, it is illustrated by taking two layers of prismatic lens as an example.
Do and further improve, the composite bright enhancement film include the second prismatic lens and on second prismatic lens
One prismatic lens.First prismatic lens include the first PET substrate 1 and multiple prism knots on the first PET substrate 1
Structure 10, multiple prism structures 10 are triangular in shape.Existing prismatic lens generally use multiple regular shapes and equidistantly arrange
Prism structure, when the prism structure is overlapped with the pixel unit of the liquid crystal display panel equally equidistantly arranged, it is possible to form
The visible pattern of interference fringe causes the clarity for showing image to reduce.With raising to LCD pixel request and right
In the case that the pixel size desired size of LCD panel reduces, the spacing of pixel unit is smaller, the prism structure on prismatic lens
It is more easy to produce interference fringe, influences imaging effect.Therefore, multiple prism knots on the first PET substrate 1
The shape and size of structure 10 can be identical, and preferably not exactly the same, gap is preferably not exactly the same, to reduce interference fringe
It generates, promotes imaging effect.
Prismatic lens are also known as brightness enhancement film, are that prism structure made of the materials such as acrylic resin is produced on transparent PET base
On material, thus a kind of optical thin film produced.The function of prismatic lens is the prism knot by being formed on transparent PET substrate
The inclined-plane of structure make the emergent light within a certain angular range from diffusion barrier deflect to positive direction refraction, remaining light because
It is unsatisfactory for refracting condition and light source is reflected back by prism edge, then reflected again from light source bottom.Work of the light in prism structure
It under, constantly recycles, is transmitted to positive view directions to the light that all directions dissipate originally, improve luminance, from
And play the effect for increasing brightness.
It does and further improves, second prismatic lens are including the 2nd PET substrate 2 and are located at the 2nd PET substrate 2
On multiple high prism structures 20 and multiple low prism structures 21.It is arranged at least one between the adjacent high prism structure 20
The quantity of the low prism structure 21, the high prism structure 20 and the low prism structure 21 can be depending on service condition.
It does and further improves, coating 4 is set without the face of prism structure in first prismatic lens, is carried on the back in the coating 4
Binder 3 is arranged in face from first prismatic lens, and the top of the high prism structure 21 is contacted with the binder 3 to be used for
It is adhesively fixed.The cured formation of resin colloid can be used in the coating 4, can to the first PET substrate 1 by the coating 4
Play the role of certain protective action, while light transmission is played to light.The high prism structure 20 can be filled into the binder 3
It is interior, it is in contact with it and is adhesively fixed.The low prism structure 21 is not filled in the binder 3, is not in contact with it.Compared to existing
There is structure, prism structure changes into height by equal height and is staggered, so that most of prism structure 21 is not filled out by the binder 3
It fills.Optical path is as shown in figure 4, the light that light beam L3 and light beam L4 is projected from the prism structure 21 can be gathered to centre, to mention
Rise luminance.
The top of the low prism structure 21 is not bonded by the binder 3, and it is insecure to easily lead to contact.It is asked for this
Topic, as shown in figure 5, the high prism structure 20 is set as including bottom 200 and the top 201 on bottom 200, the top
Portion 201 is set as cylindricality or that lower part is small, top is big is trapezoidal, for increasing and the contact bond area of the binder 3.
Compared to conventional composite bright enhancement film structure, be arranged in the composite bright enhancement film structure the high prism structure 20,
The low prism structure 21 and it is further improved include the bottom 200 and the top on the bottom 200
The 201 high prism structure 20, makes the luminance gain range of the composite bright enhancement film between 5-10%.
It should be noted that being illustrated by taking two layers of prismatic lens as an example to composite bright enhancement film in the present embodiment.But according to
Use demand is not limited to two layers of prismatic lens, increases the first prismatic lens and the by basic structure of the structure of above-mentioned two layers of prismatic lens
The quantity and relative positional relationship of two prismatic lens, increased first prismatic lens and the second prismatic lens are depending on use demand.
Embodiment 2
The utility model also proposed a kind of backlight module, including above-mentioned composite bright enhancement film, light guide plate, reflector plate, lamp bar,
Lower frame and center.The light guide plate includes incidence surface, light-emitting surface and the back side, and the reflector plate is placed in the guide-lighting back, institute
It states lamp bar and is placed in light guide plate incidence surface side.The center and the lower frame match, as support construction.The reflection
Piece is placed in the back side of the light guide plate, and the light that bottom surface is exposed is reflected back into the light guide plate, the service efficiency of light is improved.
General optical film includes diffusion barrier, lower bright enhancement film and upper bright enhancement film.The diffusion barrier primarily serves amendment angle of flare
The effect of degree increases light radiation area, but reduces the luminous intensity of unit area to a certain extent.Lower bright enhancement film and upper increasing
Light film is placed in the diffusion barrier side, and the dispersed light that light source is issued is assembled to positive direction, to improve display brightness.It is described
Composite bright enhancement film is placed in the side of the light-emitting surface of the light guide plate, can play the role of lower bright enhancement film and upper bright enhancement film, and thickness
It is thinner and easy to assembly simple.By improving, the luminance of the composite bright enhancement film is increased, and can meet backlighting requirements.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvement and replacement can also be made, these change
It also should be regarded as the protection scope of the utility model into replacement.
Claims (6)
1. a kind of composite bright enhancement film, which is characterized in that include at least the first prismatic lens and the second prismatic lens, the second prismatic lens include
PET substrate and multiple high prism structures and multiple low prism structures on PET substrate, in the adjacent high prism knot
At least one low prism structure is set between structure；Coating is set without the face of prism structure in first prismatic lens, described
Coating away from first prismatic lens face be arranged binder, the top of the high prism structure contacted with the binder with
In being adhesively fixed.
2. composite bright enhancement film according to claim 1, which is characterized in that the first prismatic lens include PET substrate and are located at
Multiple prism structures on PET substrate, the prism structure shape and size are identical.
3. composite bright enhancement film according to claim 1, which is characterized in that the top of the high prism structure is cylindricality or ladder
Shape.
4. composite bright enhancement film according to claim 1, which is characterized in that the low prism structure does not connect with the binder
Touching.
5. composite bright enhancement film according to claim 1, which is characterized in that the coating is resin colloid.
6. a kind of backlight module, including light guide plate, which is characterized in that including described in the claims 1-5 any claim
Composite bright enhancement film, the composite bright enhancement film is placed in the side of the light-emitting surface of the light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821139937.7U CN208351033U (en) | 2018-07-18 | 2018-07-18 | A kind of composite bright enhancement film and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821139937.7U CN208351033U (en) | 2018-07-18 | 2018-07-18 | A kind of composite bright enhancement film and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208351033U true CN208351033U (en) | 2019-01-08 |
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ID=64905180
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821139937.7U Active CN208351033U (en) | 2018-07-18 | 2018-07-18 | A kind of composite bright enhancement film and backlight module |
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| Country | Link |
|---|---|
| CN (1) | CN208351033U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466978A (en) * | 2021-06-30 | 2021-10-01 | 纳晶科技股份有限公司 | Brightness enhancement film and display device |
-
2018
- 2018-07-18 CN CN201821139937.7U patent/CN208351033U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466978A (en) * | 2021-06-30 | 2021-10-01 | 纳晶科技股份有限公司 | Brightness enhancement film and display device |
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