CN110068881A - A kind of brightness enhancement film - Google Patents
A kind of brightness enhancement film Download PDFInfo
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- CN110068881A CN110068881A CN201910360513.6A CN201910360513A CN110068881A CN 110068881 A CN110068881 A CN 110068881A CN 201910360513 A CN201910360513 A CN 201910360513A CN 110068881 A CN110068881 A CN 110068881A
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- 229920002521 macromolecule Polymers 0.000 claims description 108
- 230000003287 optical effect Effects 0.000 claims description 27
- 238000009792 diffusion process Methods 0.000 claims description 7
- 239000002052 molecular layer Substances 0.000 claims description 3
- 239000004973 liquid crystal related substance Substances 0.000 claims description 2
- 239000010408 film Substances 0.000 description 62
- 238000010586 diagram Methods 0.000 description 18
- 230000011664 signaling Effects 0.000 description 13
- 239000000463 material Substances 0.000 description 9
- 239000011521 glass Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000012788 optical film Substances 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
- G02B5/045—Prism arrays
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
Abstract
The invention discloses a kind of brightness enhancement film for fingerprint recognition in LCD screen, the surface of brightness enhancement film is equipped with multiple lens arrangements and multiple platform structures；The platform structure includes platform part；And the platform structure is set between multiple lens arrangements and/or on multiple lens arrangements, so that the substantially vertical plane through brightness enhancement film of exterior light.Brightness enhancement film makes LCD mould group that fingerprint recognition signal be enabled to effectively to penetrate simultaneously Precise collection in LCD mould group, realizes that fingerprint identification function identifies in the screen of LCD display device.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of brightness enhancement films and LCD for fingerprint recognition in LCD screen
Mould group.
Background technique
Fingerprint sensing and matching are a kind of reliable and widely used technologies.The common methods of fingerprint recognition are related to scanning sample
This fingerprint or its image and the image and/or specific characteristic for storing fingerprint image, can by the feature of sample fingerprint with deposited
It is that the information of the reference fingerprint in database is compared, to determine the correct identification of user, such as verification purposes.It is special
Not, (in display) fingerprint recognition by its ease for operation and multifunctionality and is suitable for compact portable in screen at present
Formula electronic equipment, and become to become more and more popular.
Currently, fingerprint recognition shows equipment mainly using OLED display in shielding, this is primarily due to OLED and shows
Device is thinner to be gentlier also easier to integrate fingerprint Identification sensor.However, relative to OLED to have more cost excellent for liquid crystal display (LCD)
Gesture.Fingerprint recognition shows that the solution of equipment is that (under display) is schemed using CMOS under LCD screen in existing LCD screen
As sensor (Complementary Metal Oxide Semiconductor, complementary metal oxide semiconductor), CMOS figure
As sensor is not exclusively built in display, but can be referred in the zone of action of display by sacrificing some thickness realizations
Line induction.But fingerprint recognition shows equipment not yet full maturity in the screen based on LCD display, especially cannot be considered in terms of finger
Line identification signal effectively penetrating in LCD mould group and Precise collection.
Fingerprint recognition is shown in equipment in the screen of LCD display, as shown in Figure 1, by identifying that it is aobvious that pressing is covered on LCD
The fingerprint on glass cover-plate 140 in display screen；However the optical signalling of fingerprint is at least through LCD display and glass for identification
Glass cover board 140, and since LCD display screen is made of LCD mould group 130 and backlight module 120, in addition glass cover-plate has centainly
Thickness.Therefore, optical signalling can occur more serious during through LCD mould group, backlight module and glass cover-plate
Refraction and scattering, or even total reflection.Especially, the feedback optical signal of biological fingerprint information is carried by function multiple in backlight module
Energy optical diaphragm seriously affects, such as the refraction, scattering and reflection of brightness enhancement film, diffusion sheet, reflector plate to light signal fed back, from
And cause light signal fed back loss or optical noise seriously polluted, cause the optical sensor 110 under LCD screen to be collected not
To effective and accurate signal, and then it can not identify biological fingerprint information.
Influencing maximum optical diaphragm to optical signalling Precise collection in backlight module is brightness enhancement film.In the prior art, increase
Bright film is arranged in the backlight module of LCD, to improve luminous efficiency.Fig. 2 is the diagram of conventional brightness enhancement film.As shown in Fig. 2, blast
Film 310 includes main part 320 and multiple lens arrangements 330.Lens arrangement 130 is isosceles right triangle prism and again
It is formed in main part 320 and is arranged to array to multiple bank column.Fig. 3 is between the visual angle and brightness for the brightness enhancement film for showing Fig. 2
Relationship curve graph.As shown in figure 3, wherein abscissa indicates that light passes through the light output angle after traditional brightness enhancement film, ordinate table
Show the brightness of light.The relation curve in vertical direction of the brightness at thick line expression visual angle and traditional brightness enhancement film in Fig. 3, and filament
Indicate the relation curve in the horizontal direction of the brightness of visual angle and traditional brightness enhancement film.Therefore, traditional brightness enhancement film has light aggregation
Effect.But for acquiring the optical signalling of biological fingerprint information when through traditional brightness enhancement film, aggregation and indefinite can also occur
To scattering, to cause object feedback loss of optical signal or optical noise seriously polluted.
Therefore, in the screen of LCD display fingerprint identification function realization, need the whole design to backlight module to improve,
The especially optical facilities design and the matched adjustment for designing other optical diaphragms of brightness enhancement film.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of brightness enhancement films and LCD for fingerprint recognition in LCD screen
Mould group enables to fingerprint recognition signal effectively to penetrate simultaneously Precise collection in LCD mould group.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: provide a kind of brightness enhancement film, wherein increase
The surface of bright film is equipped with multiple lens arrangements and multiple platform structures；Platform structure includes platform part；Platform structure is set to multiple
Between lens arrangement and/or on multiple lens arrangements, so that the substantially vertical plane through brightness enhancement film of exterior light.Here, base
This, which is vertically penetrated, refers to through the optical signalling of platform structure and the angle of brightness enhancement film within the scope of 90 ± 15 °.Here, it puts down
Incident or outgoing optical signalling is adjusted to the directional light of substantially vertical brightness enhancement film, the setting solution of platform structure by platform structure
The problem of light of having determined is totally reflected in the lens arrangement of traditional brightness enhancement film and non-directional scatters.Brightness enhancement film of the invention is for detecting
Outgoing optical signalling arcuate propagation to detected object detected, the light signal fed back of another aspect test object can connect
Brightness enhancement film and backlight module are closely nondestructively penetrated, and is accurately and efficiently acquired by the optical sensor under LCD screen, Jin Ershi
Fingerprint identification function identification in the screen of existing LCD display.Platform structure be continuously or discontinuously set between multiple lens arrangements and/
Or on multiple lens arrangements.
Preferably, brightness enhancement film includes the first macromolecule layer and the second macromolecule layer.First macromolecule layer has micro-structural
Surface, lens arrangement and platform structure setting are on microstructured surface；Lens arrangement and platform structure are in microstructured surface
Upper array arrangement.Second macromolecule layer between the first macromolecule layer and diffusion sheet and adjacent with the first macromolecule layer is set
It sets.The microstructured surface of first macromolecule layer is arranged in parallel with light guide plate or reflector plate, so that the light of backlight and fingerprint are known
Other optical signalling can be penetrated sufficiently.First macromolecule layer and the second macromolecule layer also have the function of UV Absorption, are filled in
The ultraviolet absorber of first macromolecule layer and the second macromolecule layer can reduce LCD and polymeric optical film because ultraviolet radioactive is bad
Change.
Preferably, the angle between the plane of platform part and the plane of microstructured surface is less than 10 °.
Preferably, the width of platform part is less than 1/2 of minimum range between adjacent lens structure.
Preferably, the refractive index of platform structure is substantially equal to the refractive index of the first macromolecule layer.
Preferably, refractive index of the refractive index of platform structure less than the first macromolecule layer.
Preferably, lens arrangement and platform structure are also disposed on the second macromolecule layer.
Preferably, the orientation of the lens arrangement on the microstructured surface of the first macromolecule layer is different from the second macromolecule
The orientation of lens arrangement on layer.Further, the orientation of the lens arrangement on the microstructured surface of the first macromolecule layer, base
Originally perpendicular to the orientation of the lens arrangement on the second macromolecule layer.
Preferably, the lens knot on the lens arrangement and the second macromolecule layer on the microstructured surface of the first macromolecule layer
Structure respectively includes multiple triangular prisms or the rounded triangle prism with rounded vertex.
Embodiment according to the present invention, the brightness enhancement film of the present invention can be applied to LCD display and the electricity for fingerprint recognition
Sub-device.The brightness enhancement film of the present invention is applied to the electronic device of fingerprint recognition, and the accurate knowledge to biological fingerprint information may be implemented
Not and verify.
Detailed description of the invention
The present invention and its advantage will be provided by way of non-limiting example by research, and by shown in appended attached drawing
Particular implementation detailed description and better understand, in which:
Fig. 1 is that fingerprint recognition shows equipment in the screen of the LCD display of the prior art.
Fig. 2 is the diagram of brightness enhancement film in the prior art.
Fig. 3 is the curve graph of the relationship between the visual angle and brightness of brightness enhancement film in the prior art.
Fig. 4 is the schematic diagram according to the backlight module of the embodiment of the present invention 1.
Fig. 5 is the cross section structure diagram of the brightness enhancement film of the embodiment of the present invention 1.
Fig. 6 is the cross section structure diagram of the brightness enhancement film of the embodiment of the present invention 7.
Fig. 7 is the cross-sectional view of light direction of travel in platform structure shown in fig. 5 of the invention.
Fig. 8 is the first macromolecule layer of the brightness enhancement film of the embodiment of the present invention 1 and the cross section structure diagram of the second macromolecule layer.
Fig. 9 is that the first macromolecule layer of the brightness enhancement film of the embodiment of the present invention 2 and the cross section structure of the second macromolecule layer show
Figure.
Figure 10 is that the first macromolecule layer of the brightness enhancement film of the embodiment of the present invention 3 and the cross section structure of the second macromolecule layer show
Figure.
Figure 11 is that the first macromolecule layer of the brightness enhancement film of the embodiment of the present invention 4 and the cross section structure of the second macromolecule layer show
Figure.
Figure 12 is the first macromolecule layer cross section structure diagram of the brightness enhancement film of 5 backlight module of the embodiment of the present invention.
Figure 13 is the first macromolecule layer cross section structure diagram of the brightness enhancement film of 6 backlight module of the embodiment of the present invention.
Figure 14 is the first macromolecule layer cross section structure diagram of the brightness enhancement film of 8 backlight module of the embodiment of the present invention.
Figure 15 is the first macromolecule layer cross section structure diagram of the brightness enhancement film of 9 backlight module of the embodiment of the present invention.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Embodiment 1
Firstly, being illustrated by Fig. 4, Fig. 5, Fig. 7 with regard to the brightness enhancement film of the embodiment of the present invention 1.Implement according to the present invention
Example 1 be applied to backlight module, conventional backlit mould group include light source 221 and be arranged in light source 221 side light guide plate 220,
Reflector plate 210 below light guide plate 220 is set, the diffusion sheet 230 of 220 upside of light guide plate is set, is arranged on diffusion sheet
The brightness enhancement film 240 of side；Wherein, 2401 surface of substrate of brightness enhancement film 240 is equipped with multiple lens arrangements 2402 and multiple platform structures
2403；Platform structure includes platform part 24031；Platform structure is set between multiple lens arrangements 2402, so that exterior light is basic
Vertical incidence and substantially vertical outgoing penetrate the plane of brightness enhancement film 240.
Here, as shown in fig. 7, incident or outgoing optical signalling is adjusted to substantially vertical brightness enhancement film by platform structure 2403
The directional light of 240 planes.Through platform part outgoing there are mainly two types of mode, do not worn directly in 2403 side glazing of platform structure
Cross platform part outgoing L1；On the other hand, optical signalling again passes by reflector plate after the reflection of the side of platform structure 2403
L2 is emitted from platform part after 210 reflections.It here, can be from the platform by the optical signalling of 2403 offside reflection of platform structure
Structure 2403 is emitted, and can also be emitted from other adjacent platform structures of the platform structure.Therefore, the feedback light letter of test object
It number can be close to nondestructively through brightness enhancement film 240 and backlight module, on the other hand the outgoing optical signalling for detection accurately passes
It casts to detected object to be detected, and is accurately and efficiently acquired by the optical sensor under LCD screen, and then realize LCD
Fingerprint identification function identifies in the screen of display.
Brightness enhancement film 240 includes the first macromolecule layer 310 and the second macromolecule layer 320.First macromolecule layer 310 has micro- knot
Structure surface, lens arrangement 2402 and platform structure 2403 are set on microstructured surface；Lens arrangement 2402 and platform knot
The array arrangement on microstructured surface of structure 2403.Second macromolecule layer 320 is located at the first macromolecule layer 310 and diffusion sheet
Between and be disposed adjacent with the first macromolecule layer 310.The microstructured surface and light guide plate or reflector plate of first macromolecule layer 310
It is arranged in parallel, the light of backlight and fingerprint recognition optical signalling is sufficiently penetrated.First macromolecule layer 310 and second is high
Molecular layer 320 also has the function of UV Absorption, is filled in the ultraviolet suction of the first macromolecule layer 310 and the second macromolecule layer 320
Receive agent can reduce LCD and polymeric optical film because ultraviolet radioactive deteriorates.
Angle between the plane of platform part and the plane of microstructured surface is 0 °；The width of platform part is equal to adjacent
The 1/5 of minimum range between mirror structure 2402.The refractive index of platform structure 2403 is substantially equal to the folding of the first macromolecule layer 310
Rate is penetrated, platform structure 2403 and the first macromolecule layer 310 can be same optical material.
As shown in figure 8, lens arrangement 2402 and platform structure 2403 are also disposed on the second macromolecule layer 320, first is high
Platform structure 2403 on molecule is corresponding with the platform structure 2403 on the second macromolecule layer 320, and platform structure 2403 protrudes
320 plane of first macromolecule layer 310 or the second macromolecule layer has trapezoid cross section, and further promoting optical signal can penetrate
The efficiency and accuracy of brightness enhancement film 240.The orientation of lens arrangement 2402A on the microstructured surface of first macromolecule layer 310,
Orientation basically perpendicular to the lens arrangement 2402B on the second macromolecule layer 320.
It is saturating on lens arrangement 2402 and the second macromolecule layer 320 on the microstructured surface of first macromolecule layer 310
Mirror structure 2402 respectively includes multiple triangular prisms.The microstructured surface upper mounting plate structure 2403 of first macromolecule layer 310
Discontinuous to be set between multiple lens arrangements 2402, here, platform structure 2403 is set as being alternately arranged with lens arrangement 2402
Array.
Embodiment 2
Fig. 9 is please referred to, is the first macromolecule layer 310 and the second macromolecule layer 320 of 2 brightness enhancement film of the embodiment of the present invention
Cross section structure diagram.Only with regard to embodiment 2, different place is illustrated with embodiment 1 below, herein no longer about similarity
It repeats, is provided only with lens arrangement 2402 on the second macromolecule layer 320 of brightness enhancement film, is not provided with platform structure 2403.At this point,
Light can carry out optically focused movement and diverging movement by lens arrangement 2402, to homogenize respectively by the first macromolecule layer 310
The light issued avoids out the situation of light uneven (Mura).
Embodiment 3
Figure 10 is please referred to, is the first macromolecule layer 310 and the second macromolecule layer of the brightness enhancement film of the embodiment of the present invention 3
320 cross section structure diagram.Only with regard to embodiment 3, different place is illustrated with embodiment 1 below, is existed about similarity
This is repeated no more, and 310 upper surface of the first macromolecule layer of brightness enhancement film is provided with the platform structure 2403A with trapezoid cross section, the
The position opposite with platform structure 2403A of one macromolecule layer, 310 lower surface is provided with platform structure 2403B.Here, platform
Structure 2403B and the first macromolecule layer 310 are same material, are set to the gap of 2402 array of lens arrangement.
Platform structure 2403C and the second macromolecule layer 320 on second macromolecule layer 320 are same material, are set to
The gap of 2402 array of mirror structure.Here, on the platform structure 2403B of the first macromolecule layer 310 and the second macromolecule layer 320
Platform structure 2403C it is corresponding.
Embodiment 4
Figure 11 is please referred to, is the first macromolecule layer 310 and the second macromolecule layer of the brightness enhancement film of the embodiment of the present invention 4
320 cross section structure diagram.Only with regard to embodiment 4, different place is illustrated with embodiment 1 below, is existed about similarity
This is repeated no more, and 310 upper and lower surfaces of the first macromolecule layer of brightness enhancement film are provided with the platform knot with trapezoid cross section
Structure 2403, position is opposite.Here, platform structure 2403 is different from 310 material of the first macromolecule layer, the folding of platform structure 2403
Rate is penetrated lower than the refractive index with the first macromolecule layer 310, platform structure 2403 is set to the gap of 2402 array of lens arrangement.
The refractive index of platform structure 2403 on second macromolecule layer 320 is lower than the second macromolecule layer 320, platform structure
2403 are set to the gap of 2402 array of lens arrangement.Here, the platform structure 2403 and the second high score of the first macromolecule layer 310
Platform structure 2403 in sublayer 320 is corresponding.
Embodiment 5
Figure 12 is please referred to, is the 310 cross section structure diagram of the first macromolecule layer of the brightness enhancement film of the embodiment of the present invention 5.With
Under only with regard to embodiment 5, different place is illustrated with embodiment 1, about similarity, details are not described herein, the of brightness enhancement film
One macromolecule layer, 310 upper surface is provided with the platform structure 2403 of cube, and position is opposite.Here, platform structure 2403 with
First macromolecule layer, 310 material is different, and the refractive index of platform structure 2403 is put down lower than the refractive index with the first macromolecule layer 310
Platform structure 2403 is set to the gap of 2402 array of lens arrangement.
Embodiment 6
Figure 13 is please referred to, is the 310 cross section structure diagram of the first macromolecule layer of 6 brightness enhancement film of the embodiment of the present invention.Below
Only with regard to embodiment 5, different place is illustrated with embodiment 1, and about similarity, details are not described herein, and the first of brightness enhancement film
310 upper surface of macromolecule layer is provided with the platform structure 2403 with inverted trapezoid cross section, and platform structure 2403 is set to
In mirror structure 2402 and fill the gap of 2402 array of lens arrangement.Here, platform structure 2403 and the first macromolecule layer 310
Material is identical.
Embodiment 7
Fig. 6 is please referred to, is 310 cross section structure of the first macromolecule layer of the brightness enhancement film of 7 backlight module of the embodiment of the present invention
Diagram.Only with regard to embodiment 7, different place is illustrated with embodiment 1 below, and about similarity, details are not described herein, blast
310 upper surface of the first macromolecule layer of film is continuously provided with the platform structure 2403 with trapezoid cross section.Here, platform structure
2403 is different from 2401 material of substrate of the first macromolecule layer 310, and the refractive index of platform structure 2403 is lower than and the first macromolecule
The refractive index of layer 310,2403 array of platform structure are set to the gap of 2402 array of lens arrangement.
Embodiment 8
Figure 14 is please referred to, is 310 cross section structure of the first macromolecule layer of the brightness enhancement film of 8 backlight module of the embodiment of the present invention
Diagram.Only with regard to embodiment 8, different place is illustrated with embodiment 1 below, and about similarity, details are not described herein, blast
310 upper surface of the first macromolecule layer of film is embedded to be provided with the platform structure 2403 with inverted trapezoid cross section.Here, it puts down
Platform structure 2403 is different from 2401 material of substrate of the first macromolecule layer 310, and it is high that the refractive index of platform structure 2403 is equal to first
The refractive index of molecular layer 310,2403 array of platform structure are set to the gap of 2402 array of lens arrangement.
Embodiment 9
Figure 15 is please referred to, is 310 cross section structure of the first macromolecule layer of the brightness enhancement film of 9 backlight module of the embodiment of the present invention
Diagram.Only with regard to embodiment 9, different place is illustrated with embodiment 1 below, and about similarity, details are not described herein, blast
310 upper surface of the first macromolecule layer of film is embedded to be provided with the platform structure 2403 with triangular-section, platform structure 2403
It can be triangle cone or tetrahedron.Here, 2401 material of substrate of platform structure 2403 and the first macromolecule layer 310 is not
Together, the refractive index of platform structure 2403 is equal to the refractive index of the first macromolecule layer 310, and platform structure 2403 is set to lens arrangement
The gap of 2402 arrays.
Although hereinbefore by reference to some embodiments, invention has been described, of the invention not departing from
In the case where range, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as not
There are structural conflict, the various features in presently disclosed each embodiment can be combined with each other by any way
It uses, the description for not carrying out exhaustive to the case where these combinations in the present specification is for omission length and to economize on resources
Consider.Therefore, the invention is not limited to specific embodiments disclosed herein, but including falling within the scope of the appended claims
All technical solutions.
Claims (10)
1. the surface of a kind of brightness enhancement film, the brightness enhancement film is equipped with multiple lens arrangements and multiple platform structures；The platform structure
Including platform part；And
The platform structure is set between multiple lens arrangements and/or on multiple lens arrangements, so that exterior light is substantially vertical
Through the plane of brightness enhancement film.
2. brightness enhancement film according to claim 1, it is characterised in that: the brightness enhancement film includes that the first macromolecule layer and second are high
Molecular layer；
Wherein, first macromolecule layer and second macromolecule layer are disposed adjacent；First macromolecule layer has micro- knot
Structure surface, the lens arrangement and the platform structure are set on microstructured surface；Second macromolecule layer is located at
Between first macromolecule layer and the diffusion sheet；Second macromolecule layer is also equipped with the lens arrangement on surface.
3. brightness enhancement film according to claim 2, it is characterised in that: the plane of the platform part and the microstructured surface
Plane between angle less than 10 °.
4. brightness enhancement film according to claim 2, it is characterised in that: the width of the platform part be less than adjacent lens structure it
Between minimum range 1/2.
5. brightness enhancement film according to claim 2, it is characterised in that: the refractive index of the platform structure is substantially equal to described
The refractive index of one macromolecule layer；Or the refractive index of the platform structure is less than the refractive index of first macromolecule layer.
6. according to any brightness enhancement film of claim 2-5, it is characterised in that: second macromolecule layer surface is also equipped with
The platform structure.
7. brightness enhancement film according to claim 6, it is characterised in that: the microstructured surface of first macromolecule layer
The orientation of the upper lens arrangement, different from the orientation of the lens arrangement on second macromolecule layer.
8. brightness enhancement film according to claim 7, it is characterised in that: the microstructured surface of first macromolecule layer
The orientation of the upper lens arrangement, the orientation basically perpendicular to the lens arrangement on second macromolecule layer.
9. brightness enhancement film according to claim 2, it is characterised in that: the microstructured surface of first macromolecule layer
Lens arrangement on the upper lens arrangement and second macromolecule layer respectively includes multiple triangular prisms or has a circle
The rounded triangle prism on shape vertex.
10. a kind of LCD mould group, comprising: any in liquid crystal display panel, reflector plate, light source, light guide plate, diffusion sheet and claim 1-9
The brightness enhancement film and photosensitive element, to receive the feedback optical signal through the LCD mould group.
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|---|---|---|---|
| CN201910360513.6A CN110068881A (en) | 2019-04-30 | 2019-04-30 | A kind of brightness enhancement film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910360513.6A CN110068881A (en) | 2019-04-30 | 2019-04-30 | A kind of brightness enhancement film |
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| CN201910360513.6A Pending CN110068881A (en) | 2019-04-30 | 2019-04-30 | A kind of brightness enhancement film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021103888A1 (en) * | 2019-11-25 | 2021-06-03 | 华为技术有限公司 | Liquid crystal display apparatus |
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| CN205562850U (en) * | 2016-02-04 | 2016-09-07 | 东莞市纳利光学材料有限公司 | Anti blue light brightness enhancement film |
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