CN114509894A - Even light film and backlight source packaging module - Google Patents
Even light film and backlight source packaging module Download PDFInfo
- Publication number
- CN114509894A CN114509894A CN202111456541.1A CN202111456541A CN114509894A CN 114509894 A CN114509894 A CN 114509894A CN 202111456541 A CN202111456541 A CN 202111456541A CN 114509894 A CN114509894 A CN 114509894A
- Authority
- CN
- China
- Prior art keywords
- light
- micro
- concave
- film
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 239000002096 quantum dot Substances 0.000 claims description 7
- 239000010408 film Substances 0.000 abstract description 70
- 230000000694 effects Effects 0.000 abstract description 16
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 239000012788 optical film Substances 0.000 abstract description 2
- 230000001795 light effect Effects 0.000 abstract 1
- 239000012528 membrane Substances 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention relates to the field of optical films, in particular to a light homogenizing film and a backlight source packaging module. The invention provides a light homogenizing film which comprises a substrate, wherein a plurality of micro-concave lenses are tightly arranged on the first end surface of the substrate, two adjacent micro-concave lenses form partial stack, and the mutual relation of the micro-concave lenses accords with that the bottoms of the concave parts of the micro-concave lenses are not completely flush with each other and/or the concave depths of the micro-concave lenses are not all equal. The uniform light film has higher duty ratio of the micro-lens surface, higher haze without influencing the light transmission effect, and better uniform light effect. The invention also provides a backlight source packaging module adopting the light homogenizing film, which has a good light homogenizing effect.
Description
Technical Field
The invention relates to the field of optical films, in particular to a light homogenizing film and a backlight source packaging module.
Background
The application scene of the LCD display module is wide, the existing LCD display module comprises a display screen and a backlight source module, the display screen does not emit light, and light emitted by the backlight source module is used for imaging. The backlight source module is provided with a backlight lamp plate, a plurality of Mini LED light sources are arranged on the backlight lamp plate, light rays emitted by each Mini LED light source are regarded as a point light source, and the light intensity of the point light source is concentrated at the center. If the Mini LED light sources are directly projected on the display screen, the image formed by the display screen will be dark and uneven, and the visual effect of the image frame will be affected. The utility model provides a current even light membrane, its body is the base plate, be equipped with the microstructure that a plurality of structural shapes are the same on the first terminal surface of base plate, the refraction takes place when light passes first terminal surface, thereby it becomes the line source to make the light dispersion after passing first terminal surface become by the pointolite, thereby light is become the area source by the pointolite after passing the first terminal surface of a plurality of even light membranes in succession by the multiple dispersion, the distribution of area source light intensity is more dispersed than the pointolite, the visual effect of the formation of image picture of display screen is also better.
The single light homogenizing film has good and bad light homogenizing effect, and is related to the haze and the micro-lens surface duty ratio. The higher the haze of the light homogenizing film is, the more spread the light passes through the light homogenizing film, and the better the light homogenizing effect is. The factors influencing the haze are relatively complex, the haze is generally related to the factors such as the material quality of the light homogenizing film, the surface abrasion degree (irregularity degree) and the like, and after the material quality is determined, if the surface of the light homogenizing film is abraded intentionally to pursue high haze, the light transmitting effect is influenced, so in the actual production, people mainly design and adjust the duty ratio of the microlens surface of the light homogenizing film to improve the light homogenizing effect of the light homogenizing film. However, the light uniformizing effect of the existing light uniformizing film is still unsatisfactory.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a light homogenizing film, the duty ratio of a micro-lens surface is higher, the haze is higher, but the light transmission effect is not influenced, and the light homogenizing effect of the light homogenizing film is better; the invention also provides a backlight source packaging module adopting the light homogenizing film, which has a good light homogenizing effect.
In order to solve the above problems, the present invention provides a light uniformizing film, which includes a substrate, a first end surface of the substrate is closely arranged with a plurality of micro-concave lenses, two adjacent micro-concave lenses form a partial stack, and the interrelation of the micro-concave lenses conforms to the following relationship one and/or relationship two and/or relationship three:
relationship one: the bottoms of the depressions of the micro-concave lenses are not all parallel and level with each other;
the second relation: the concave parts of the micro-concave lenses are not all flush with each other;
relationship three: the individual micro-concave lens depressions are not all equal in depth.
Further, the second relationship is that, in the second embodiment, the concave recesses of the micro-concave lenses are not all flush with each other, and not all the concave recesses of the micro-concave lenses are parallel to or on the first end surface.
Further, the relationship III specifically shows that the depth of each dimple lens depression is 0.1 μm to 5 μm.
Further, a plurality of micro grooves are arranged on the second end face of the substrate, the concave space of each micro groove is an congruent pyramid, the bottom face of each pyramid is polygonal, the pyramid is positioned on the second end face of the substrate, and the pyramid is a rectangular pyramid or a triangular pyramid, specifically:
the polygon of the bottom surface of the micro-groove rectangular pyramid is a parallelogram, each parallelogram is arranged on the second end surface, every two adjacent parallelograms are adjacent at intervals, adjacent sides are equal and parallel, or closely adjacent sides are equal and coincident;
the polygon on the bottom surface of the micro-groove triangular pyramid is triangular, each triangle is arranged on the second end surface, every two adjacent triangles are adjacent at intervals, adjacent sides are equal and parallel, or closely adjacent, adjacent sides are equal and coincident.
Further, the bottom surface of each micro-groove rectangular pyramid is a square or non-square rectangle; the bottom surface of each micro-groove triangular pyramid is a regular triangle.
Has the advantages that: in the light homogenizing film, two adjacent micro-concave lenses of the first end surface are partially stacked, so that no micro-concave lens structure exists in the first end surface, the space of the light homogenizing film is relatively high, the concave bottoms of the micro-concave lenses of each micro-concave lens are not completely parallel to each other, or the concave depths of the micro-concave lenses are not completely equal, so that the first end surface is relatively irregular, the haze is relatively high, and the light transmission effect of the light homogenizing film is not influenced because the surface of the first end surface does not need to be abraded. The duty ratio of the light-homogenizing film is high, and the haze is also high, so that the light-homogenizing effect of the light-homogenizing film is correspondingly good.
The invention also provides a backlight source packaging module which comprises a backlight lamp panel and at least two light homogenizing films which are overlapped together, wherein the light homogenizing films take the first end face as an incident end face and the second end face as an emergent end face, and the light homogenizing films are all as described above.
Further, each of the light leveling films is the same.
Further, the backlight device comprises a quantum dot film which is positioned between the backlight lamp panel and the light homogenizing film.
Further, the backlight lamp panel is specifically a Mini LED backlight lamp panel.
The light homogenizing film further comprises two light intensifying triangular prisms located outside the emergent end face of the light homogenizing film, a plurality of transverse triangular prisms are arranged on the emergent end face of each light intensifying triangular prism, the prism axes of the triangular prisms of the same light intensifying triangular prism are parallel to each other, the arrangement directions of the two light intensifying triangular prisms are different by 90 degrees, and the deviation range of the angle difference is within plus or minus 1 degree, or within plus or minus 3 degrees, or within plus or minus 5 degrees, or within plus or minus 10 degrees.
Has the advantages that: the backlight source packaging module comprises a plurality of light homogenizing films, and each light homogenizing film is superior to the existing light homogenizing film, so that compared with the prior art, the backlight source packaging module can better disperse and homogenize light, and has a better light homogenizing effect.
Drawings
FIG. 1 is a schematic perspective view of a first light uniformizing film (each micro-groove concave space is a regular rectangular pyramid).
Fig. 2 is a partial structural view (top view) of a first end face of a first light uniformizing film under a microscope.
FIG. 3 is a schematic side view of the first end face of the first light distributing film (with the second end face hidden).
FIG. 4 is a simplified side view of the first end of the first dodging film (with the second end hidden and with the recess depth D, recess bottom B and recess T).
FIG. 5 is a top view of a second end face of a first light distributing film.
Fig. 6 is a schematic perspective view of a second light-diffusing film (each micro-groove concave space is a regular triangular pyramid).
FIG. 7 is a top view of a second end face of a second light distributing film.
Fig. 8 is a schematic structural diagram of a backlight source packaging module (packaged with a light homogenizing film).
Description of the symbols:
11-each micro-groove concave space is a regular rectangular pyramid light homogenizing film; 12-each micro-groove concave space is a light homogenizing film of a regular triangular pyramid; 2-a substrate; 21-a first end face; 22-a second end face; 3-a micro-concave lens; 4-micro grooves; 41-a recessed space; 42-adjacent edge; 5-a backlight source packaging module; 51-Mini LED backlight panel; 511-Mini LED light source; 52-quantum dot film; 53-intensifying triangular prism; 6-LCD display screen; d-the depression depth; b-the bottom of the depression; t-notch.
Detailed Description
The invention is described in further detail below with reference to specific embodiments.
The light uniformizing film 11 as shown in fig. 1 comprises a substrate 2, a plurality of micro-concave lenses 3 (see fig. 2) are closely arranged on a first end face 21 of the substrate 2, the micro-concave lenses 3 are fully paved on the first end face 21 of the light uniformizing film 11, and two adjacent micro-concave lenses 3 are partially stacked, so that the duty ratio of the first end face 21 reaches 100%. The individual micro-concave lenses 3 are different in size, see in particular fig. 3 and 4: the concave depth D of each micro-concave lens 3 is not all equal, but is in the range of 0.1-5 μm; the concave bottoms B of the micro-concave lenses 3 are not all flush with each other; the concave recesses T of the respective micro-concave lenses 3 are not all flush with each other. The partial micro-concave lens 3 also has its notches T themselves non-parallel to the first end surface 21, each notch T being higher or lower than the first end surface 21 or just above the first end surface 21. The haze of the light uniformizing film 11 is higher than that of the plane-shaped micro concave lens 3 because the micro concave lens 3 is in an irregular wavy shape.
The substrate 2 of the light homogenizing film 11 has a second end surface 22, see fig. 5, on which a plurality of micro grooves 4 are arrayed, the concave spaces 41 of the micro grooves 4 are congruent regular rectangular pyramids, the bottom surfaces of the regular rectangular pyramids are square, and the regular rectangular pyramids are located on the second end surface 22 of the substrate 2. The bottom squares are arranged in the same direction and are arranged in an array on the second end surface 22, every two adjacent bottom squares are adjacent at intervals, and the adjacent sides 42 of the two adjacent bottom squares are equal and parallel to each other. Of course, each two adjacent bottom squares may not be spaced apart from each other but may instead be closely adjacent to each other, and the adjacent sides 42 of the two bottom squares may instead be parallel to each other, respectively, but may instead coincide with each other. In addition, the concave spaces 41 of the micro-grooves 4 of the light uniformizing film 11 can be changed into congruent non-regular rectangular pyramids, so that the bottom surface of the pyramid is a non-square rectangle or even just a parallelogram, the light uniformizing effect of the light uniformizing film is slightly inferior to that of the light uniformizing film 11 with the square bottom surface as shown in fig. 5, but the point light sources can still be uniformly opened as linear light sources.
In actual use, the light-diffusing film 11 and other devices need to be packaged together into a backlight packaging module 5, which is located on the back surface of the LCD panel 6, as shown in fig. 8. The backlight source packaging module 5 is sequentially provided with a Mini LED backlight lamp panel 51, a quantum dot film 52, two superposed light homogenizing films 11 and two superposed light intensifying triangular prisms 53 from the back to the front, wherein the front of the Mini LED backlight lamp panel 51 is provided with a plurality of Mini LED light sources 511 aligned with the LCD display screen 6. Two identical dodging films 11 are aligned and stacked together, and both have the first end face 21 as an incident end face and the second end face 22 as an emergent end face. A plurality of prisms (not shown) are arranged in a row on the exit end face of the light-increasing prism 53, prism axes (not shown) of the prisms of the same light-increasing prism 53 are parallel to each other, and the arrangement directions of the two light-increasing prisms 53 are different by 90 ° (that is, the projections of the prism axes of the two light-increasing prisms 53 on the exit end face are perpendicular to each other). The quantum dot film 52, the two light homogenizing films 11 and the two light intensifying triangular lenses 53 are sequentially aligned and stacked and then placed on the front face of the Mini LED backlight lamp plate 51, the quantum dot film 52, the two light homogenizing films 11 and the two light intensifying triangular lenses 53 are packaged on the Mini LED backlight lamp plate 51 together through packaging glue, and the required backlight source packaging module 5 is obtained after packaging is completed. Mini LED light source 511 of Mini LED backlight plate 51 sends the light towards LCD display 6, every Mini LED light source 511 can be regarded as a pointolite, the pointolite light passes quantum dot membrane 52 at first, the light passes two even light membrane 11 in proper order afterwards, it is even opened evenly to be spread by two even light membrane 11, evenly open into the line light source by the pointolite, the line light source increases light through two light enhancement triangular prism pieces 53 in proper order again, project the LCD display 6 back, LCD display 6 shows the light darkness from this evenly, the image that visual effect is good.
Referring to fig. 6 and 7, the concave spaces 41 of the micro-grooves 4 on the second end surface 22 of the light homogenizing film are not rectangular pyramids but congruent regular triangular pyramids, and the bottom surface of each regular triangular pyramid is located on the second end surface 22 of the substrate 2. The regular triangles on the bottom surface of the light homogenizing film 12 are arranged adjacently at intervals, and the adjacent sides 42 of every two adjacent regular triangles on the bottom surface are equal and parallel. Similarly, each two adjacent base surface regular triangles may not be spaced apart but may instead be closely adjacent, and the adjacent sides 42 of the two base surface regular triangles are correspondingly changed from being parallel to being coincident with each other. Unpreferably, the concave space 41 of each micro-groove 4 of the light homogenizing film 12 can also be changed into a congruent non-regular triangular pyramid, namely a general triangle with a non-regular triangle bottom surface, the light homogenizing effect of the light homogenizing film is slightly inferior to that of the light homogenizing film 12 with a regular triangle bottom surface as shown in fig. 7, but the point light sources can still be homogenized into a linear light source. The way of packaging the light homogenizing film 12 with the recessed space 41 being a triangular pyramid into the backlight packaging module 5 is the same as the way of packaging the light homogenizing film 11 with the recessed space 41 being a rectangular pyramid, and details are not repeated here.
In this embodiment, the number of the light equalizing films of the backlight source encapsulation module 5 is two. In other embodiments, the number of light homogenizing films can also be three or more. In addition, all the angle difference values can be within plus or minus 1 degree (for example, the angle difference is 45 degrees, and can be within the range of 44-46 degrees), or within plus or minus 3 degrees, or within plus or minus 5 degrees, or within plus or minus 10 degrees, as long as the light homogenizing effect of the light homogenizing film is better than that of the prior art within the deviation range.
The above description is only the embodiments of the present invention, and the scope of protection is not limited thereto. The insubstantial changes or substitutions will now be made by those skilled in the art based on the teachings of the present invention, which fall within the scope of the claims.
Claims (10)
1. A light homogenizing film comprises a substrate, wherein a first end face of the substrate is closely provided with a plurality of micro-concave lenses, and the light homogenizing film is characterized in that two adjacent micro-concave lenses form a partial stack, and the mutual relation of the micro-concave lenses meets the following relation I and/or relation II and/or relation III:
relationship one: the bottoms of the depressions of the micro-concave lenses are not all parallel and level with each other;
the second relation: the concave parts of the micro-concave lenses are not all flush with each other;
relationship three: the individual micro-concave lens depressions are not all equal in depth.
2. The light distributing film as claimed in claim 1, wherein in the second relation, the concave recesses of the micro-concave lenses are not all flush with each other, and not all of the concave recesses of the micro-concave lenses are parallel to or on the first end surface.
3. The light unifying film according to claim 1, wherein the relationship is that each of the micro-concave lens depressions has a depth of 0.1 μm to 5 μm.
4. The light unifying film according to claim 1, wherein: a plurality of micro grooves are arranged on the second end face of the substrate, the concave space of each micro groove is an congruent pyramid, the bottom face of the pyramid is a polygon and is positioned on the second end face of the substrate, and the pyramid is a rectangular pyramid or a triangular pyramid, specifically:
the polygon of the bottom surface of the micro-groove rectangular pyramid is a parallelogram, each parallelogram is arranged on the second end surface, every two adjacent parallelograms are adjacent at intervals, adjacent sides are equal and parallel, or closely adjacent sides are equal and coincident;
the polygon on the bottom surface of the micro-groove triangular pyramid is triangular, each triangle is arranged on the second end surface, every two adjacent triangles are adjacent at intervals, adjacent sides are equal and parallel, or closely adjacent, adjacent sides are equal and coincident.
5. The light homogenizing film according to claim 4, characterized in that: the bottom surface of each micro-groove rectangular pyramid is a square or non-square rectangle; the bottom surface of each micro-groove triangular pyramid is a regular triangle.
6. A backlight source packaging module comprises a backlight lamp panel and at least two light homogenizing films which are overlapped together, wherein the light homogenizing films take a first end face as an incident end face and a second end face as an emergent end face, and the light homogenizing films are all as claimed in any one of claims 1 to 5.
7. The backlight packaging module of claim 6, wherein the light spreading films are identical.
8. The backlight packaging module of claim 6, comprising a quantum dot film between the backlight panel and the light spreading film.
9. The backlight source package module of claim 6, wherein the backlight panel is a Mini LED backlight panel.
10. The backlight source packaging module according to any one of claims 6 to 9, comprising two light-enhancing triangular prisms outside the exit end face of the light-homogenizing film, wherein a plurality of transverse triangular prisms are arranged on the exit end face of the light-enhancing triangular prism, prism axes of the triangular prisms of the same light-enhancing triangular prism are parallel to each other, the two light-enhancing triangular prisms are arranged in directions different by 90 °, and the deviation range of the angle difference is within plus or minus 1 °, or within plus or minus 3 °, or within plus or minus 5 °, or within plus or minus 10 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111456541.1A CN114509894A (en) | 2021-12-01 | 2021-12-01 | Even light film and backlight source packaging module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111456541.1A CN114509894A (en) | 2021-12-01 | 2021-12-01 | Even light film and backlight source packaging module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114509894A true CN114509894A (en) | 2022-05-17 |
Family
ID=81548275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111456541.1A Pending CN114509894A (en) | 2021-12-01 | 2021-12-01 | Even light film and backlight source packaging module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114509894A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4321659B1 (en) * | 2008-09-25 | 2009-08-26 | 凸版印刷株式会社 | Optical device, optical uniform device, optical sheet, backlight unit and display device |
| CN101625483A (en) * | 2008-07-10 | 2010-01-13 | 鸿富锦精密工业（深圳）有限公司 | Backlight module and diffusion plate thereof |
| US20100245713A1 (en) * | 2006-10-26 | 2010-09-30 | Tadashi Yano | Light source device, backlight device, and liquid crystal display |
| US20200225398A1 (en) * | 2019-01-15 | 2020-07-16 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Light guide assembly, backlight module, and display panel |
| CN113156550A (en) * | 2021-03-19 | 2021-07-23 | 苏州维旺科技有限公司 | Mini LED light homogenizing sheet, preparation process thereof and backlight module |
| CN113156558A (en) * | 2021-03-19 | 2021-07-23 | 苏州维旺科技有限公司 | Mini LED diffusion sheet, preparation process thereof and backlight module |
| CN216411807U (en) * | 2021-12-01 | 2022-04-29 | 广州森万象新材料科技有限公司 | Even light film and backlight source packaging module |
-
2021
- 2021-12-01 CN CN202111456541.1A patent/CN114509894A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100245713A1 (en) * | 2006-10-26 | 2010-09-30 | Tadashi Yano | Light source device, backlight device, and liquid crystal display |
| CN101625483A (en) * | 2008-07-10 | 2010-01-13 | 鸿富锦精密工业（深圳）有限公司 | Backlight module and diffusion plate thereof |
| JP4321659B1 (en) * | 2008-09-25 | 2009-08-26 | 凸版印刷株式会社 | Optical device, optical uniform device, optical sheet, backlight unit and display device |
| US20200225398A1 (en) * | 2019-01-15 | 2020-07-16 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Light guide assembly, backlight module, and display panel |
| CN113156550A (en) * | 2021-03-19 | 2021-07-23 | 苏州维旺科技有限公司 | Mini LED light homogenizing sheet, preparation process thereof and backlight module |
| CN113156558A (en) * | 2021-03-19 | 2021-07-23 | 苏州维旺科技有限公司 | Mini LED diffusion sheet, preparation process thereof and backlight module |
| CN216411807U (en) * | 2021-12-01 | 2022-04-29 | 广州森万象新材料科技有限公司 | Even light film and backlight source packaging module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7539172B2 (en) | Backlight units for backlit displays | |
| TWI660389B (en) | Multiview backlight, display and method employing fluorescent multibeam element | |
| US8432512B2 (en) | Backlight assembly and display device having the same | |
| US8240906B2 (en) | Backlight unit of liquid crystal display | |
| US20060012993A1 (en) | Surface light source device, illumination unit and light flux control member | |
| US9013790B1 (en) | High contrast rear projection screen for use with a diverging illumination source | |
| US10514552B2 (en) | Auto stereoscopic three-dimensional panel display systems and methods supporting improved fidelity display to multiple simultaneous viewers | |
| US10877316B2 (en) | Lighting device and display device | |
| CN114019727A (en) | Light homogenizing film for backlight source packaging module and backlight source packaging module | |
| US11822158B2 (en) | Back light unit for backlit displays | |
| US20200292881A1 (en) | Multilayer of light diffusers, backlight unit, and liquid crystal display device | |
| US11906842B2 (en) | Optical film for back light unit and back light unit including same | |
| CN216411807U (en) | Even light film and backlight source packaging module | |
| US20090040155A1 (en) | Display device and liquid crystal display device | |
| CN216817124U (en) | Light homogenizing film for backlight source packaging module and backlight source packaging module | |
| KR20230084276A (en) | Active emitter multi-view backlight employing a diffuser, display and method | |
| CN210982932U (en) | Three-dimensional display device | |
| CN216622914U (en) | Even membrane and backlight encapsulation module with two-sided microstructure | |
| CN114509894A (en) | Even light film and backlight source packaging module | |
| CN217279200U (en) | Even membrane, backlight encapsulation module with little groove structure in clearance | |
| JP5321044B2 (en) | Surface light source device, backlight unit, and display device | |
| US20240111186A1 (en) | Back Light Unit for Backlit Displays | |
| US12032242B1 (en) | Back light unit for backlit displays | |
| US11933999B2 (en) | Optical structure film and light source module | |
| US20240094446A1 (en) | Light diffusion sheet, backlight unit, liquid crystal display device, and information device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |