CN114019727A - A kind of uniform light film for backlight source packaging module, backlight source packaging module - Google Patents
A kind of uniform light film for backlight source packaging module, backlight source packaging module Download PDFInfo
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- CN114019727A CN114019727A CN202111455072.1A CN202111455072A CN114019727A CN 114019727 A CN114019727 A CN 114019727A CN 202111455072 A CN202111455072 A CN 202111455072A CN 114019727 A CN114019727 A CN 114019727A
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- 238000004806 packaging method and process Methods 0.000 title claims description 25
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 239000010408 film Substances 0.000 abstract description 83
- 230000000694 effects Effects 0.000 abstract description 16
- 238000005538 encapsulation Methods 0.000 abstract description 3
- 230000001795 light effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000012788 optical film Substances 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 description 7
- 239000002096 quantum dot Substances 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
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- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
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- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
Abstract
本发明涉及光学膜材领域，具体涉及一种用于背光源封装模组的匀光膜和一种背光源封装模组。本发明提供一种匀光效果较好的匀光膜，包括基板，基板第一端面紧密排布有多个微凹透镜，基板第二端面间隔排布有多个微凹槽，各微凹槽的凹陷空间为全等的棱锥体，棱锥体的底面为多边形，位于基板的第二端面上，棱锥体为四棱锥或三棱锥，具体地：微凹槽四棱锥的底面多边形为平行四边形，在第二端面上间隔排布，每相邻的两个平行四边形两者相邻边平行且相等；微凹槽三棱锥的底面多边形为三角形，在第二端面上间隔排布，每相邻的两个三角形两者相邻边平行且相等。本发明还提供一种背光源封装模组，其匀光效果好。
The invention relates to the field of optical film materials, in particular to a light homogenizing film used for a backlight source encapsulation module and a backlight source encapsulation module. The invention provides a homogenizing film with better homogenizing effect, which comprises a substrate, a first end face of the substrate is closely arranged with a plurality of micro-concave lenses, a second end face of the substrate is arranged with a plurality of micro grooves at intervals, The concave space is a congruent pyramid, the bottom surface of the pyramid is a polygon, which is located on the second end surface of the substrate, and the pyramid is a quadrangular pyramid or a triangular pyramid, specifically: the bottom surface of the micro-grooved quadrangular pyramid is a parallelogram. The two end faces are arranged at intervals, and the adjacent sides of each adjacent two parallelograms are parallel and equal; The adjacent sides of a triangle are parallel and equal. The present invention also provides a backlight source package module, which has a good uniform light effect.
Description
Technical Field
The invention relates to the field of optical film materials, in particular to a light homogenizing film for a backlight source packaging module and the 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 on the display screen will be dark and uneven, and the visual effect of the image frame will be affected. Common even membrane of bare, it includes the base plate, is equipped with microstructures such as prism on the first terminal surface of base plate, and the refraction takes place when light passes first terminal surface for thereby the light dispersion after passing first terminal surface becomes the pointolite that the light intensity is more weak and mixes with the line source by the pointolite that the light intensity is stronger, and line source light distribution is more dispersed than the pointolite, and the picture visual effect that becomes after the display screen is projected is better. However, the even light effect of the even light membrane of current still can not be satisfied, need be more even light membrane superpose just can be better even division line light source to the pointolite after together, so need reserve the space that supplies more even light membrane installation, be unfavorable for the miniaturization of LCD display module assembly.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a light homogenizing film for a backlight source packaging module, which has a good light homogenizing effect; the invention also provides a backlight source packaging module which is good in light uniformizing effect.
In order to solve the above problems, the present invention provides a light uniformizing film for a backlight packaging module, including a substrate, wherein a first end surface of the substrate is closely distributed with a plurality of micro-concave lenses, a second end surface of the substrate is distributed with a plurality of micro-grooves at intervals, a recessed space of each micro-groove is an congruent pyramid, a bottom surface of the pyramid is a polygon, and the pyramid is located on the second end surface of the substrate, and is a rectangular pyramid or a triangular pyramid, specifically:
the polygon of the bottom surface of the micro-groove rectangular pyramid is a parallelogram, the polygons are arranged on the second end surface at intervals, and the adjacent sides of every two adjacent parallelograms are parallel and equal;
the polygon of the bottom surface of the micro-groove triangular pyramid is triangular, the polygons are arranged on the second end surface at intervals, and the adjacent sides of every two adjacent triangles are parallel and equal.
Furthermore, the adjacent sides of every two adjacent polygons have a distance, and the width of the distance is 13% -17% of the length of the adjacent sides.
Further, the pitch width is 15% of the adjacent side length.
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.
Further, on the first end face, two adjacent micro-concave lenses form a partial stack, and the mutual relationship 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.
Has the advantages that: the light homogenizing film substrate is characterized in that a plurality of micro-concave lenses are tightly distributed on the first end face of the light homogenizing film substrate, a plurality of micro-grooves are distributed on the second end face at intervals, point light sources are refracted when passing through the first end face and the second end face, so that the point light sources are more easily homogenized, the micro-grooves on the second end face of the light homogenizing film are distributed at intervals, two adjacent micro-grooves are separated from each other, the point light sources are refracted through the second end face to form a linear light source more easily, and therefore the light homogenizing effect of the light homogenizing film is better.
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 first end face of each light homogenizing film is used as an incident end face, the second end face of each light homogenizing film is used 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.
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 the light homogenizing effect of each light homogenizing film is superior to that of the existing light homogenizing film, so that compared with the prior art, the backlight source packaging module can better disperse light uniformly and has a better light homogenizing effect. The backlight source packaging module can play the effect of uniformly opening point light sources only by less uniform light films, so that the LCD display module does not need to reserve more installation space, and the miniaturization of the LCD display module is facilitated.
Drawings
Fig. 1 is a graph showing the simulated light pattern of the light from a point light source after being refracted by a light-homogenizing film with a rectangular pyramid-shaped concave space and a 0% pitch width (i.e., no pitch).
Fig. 2 is a graph of simulated light patterns of a point light source after being refracted by a light uniformizing film with a rectangular pyramid-shaped concave space and a 6% pitch width.
Fig. 3 is a graph of simulated light patterns of a point light source after being refracted by a light uniformizing film with a rectangular pyramid-shaped concave space and a 15% pitch width.
Fig. 4 is a graph of simulated light patterns of a point light source after being refracted by a light uniformizing film with a rectangular pyramid-shaped concave space and a pitch width of 20%.
FIG. 5 is a graph of simulated light from a point source after refraction by a light homogenizing film with a recessed space of triangular pyramid and a pitch width of 0% (i.e., no pitch).
Fig. 6 is a simulated light pattern of a point light source after being refracted by a uniform light film with a concave space of a triangular pyramid and a pitch width of 6%.
FIG. 7 is a graph of simulated light from a point source after being refracted by a uniform film having a concave space of triangular pyramid and a pitch width of 15%.
Fig. 8 is a simulated light pattern of a point light source after being refracted by a uniform light film having a concave space of a triangular pyramid and a pitch width of 20%.
Fig. 9 is a schematic perspective view of a first light-diffusing film (each micro-groove concave space is a regular rectangular pyramid).
Fig. 10 is a partial structural view (top view) of a first end face of a first light uniformizing film under a microscope.
FIG. 11 is a schematic side view of the first end face of the first dodging film (with the second end face hidden).
FIG. 12 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. 13 is a top view of a second end face of a first light distributing film.
Fig. 14 is a partial view of fig. 13.
Fig. 15 is a schematic structural view of a backlight source packaging module (packaged with a light homogenizing film).
Fig. 16 is a schematic perspective view of a second light uniformity film (each micro-groove depression space is a regular triangular pyramid).
FIG. 17 is a top view of a second end face of a second light distributing film.
Fig. 18 is a partial view of fig. 17.
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; a T-notch; w-pitch width.
Detailed Description
The invention is described in further detail below with reference to specific embodiments.
Referring to fig. 9, the light uniformizing film 11 has a plurality of micro-concave lenses 3 densely arranged on the first end surface 21 of the substrate 2. referring to fig. 10, these micro-concave lenses 3 are fully paved on the first end surface 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 surface 21 reaches 100%. Referring to fig. 11, the sizes of the micro-concave lenses 3 are different, and specifically, refer to fig. 12: 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. Since the first end surface 21 of the light-uniformizing film 11 is irregularly waved, the haze is higher than that of a light-uniformizing film whose first end surface is flat.
The second end face 22 of the substrate 2 of the light uniformizing film 11 is shown in fig. 13 and 14, a plurality of micro grooves 4 are arranged on the substrate at intervals in an array, the recessed space 41 of each micro groove 4 is a congruent regular rectangular pyramid, the bottom surface of the regular rectangular pyramid is square, and the regular rectangular pyramid is positioned on the second end face 22 of the substrate 2. The bottom surface squares are arranged in the same direction at intervals in an array on the second end surface 22, every two adjacent bottom surface squares are adjacent at intervals, the adjacent sides 42 of the two adjacent bottom surface squares are equal and parallel to each other, a space is reserved between the two adjacent sides 42, and point light source light rays are refracted by the second end surface 22 with the space to form a line light source more easily. The same point light source was used to irradiate four light-homogenizing films having pitch widths W of 0% (i.e., no pitch light-homogenizing film 11), 6%, 15%, and 20% of the length of the adjacent side 42, and the obtained simulated light patterns were shown in fig. 1, 2, 3, and 4, respectively. The simulation light pattern diagram of the non-interval light homogenizing film is shown in fig. 1, point light sources refract light homogenizing through the non-interval light homogenizing film, light intensity distribution is still concentrated to form four point light sources which are brighter and stronger in light intensity, line light source light intensity is weaker and not obvious, and the light homogenizing effect is poor. The spacing width W of the dodging film is 6% of the length of the adjacent edges 42 of the two adjacent conical bottom surfaces, and the simulated light pattern is shown in FIG. 2; the spacing width W of the dodging film is 15% of the length of the adjacent edges 42 of the two adjacent conical bottom surfaces, and a simulated light type graph is shown in FIG. 3; the light homogenizing film with the spacing width W being 20% of the length of the adjacent edge 42 of the two adjacent conical bottom surfaces has a simulated light pattern as shown in FIG. 4. Therefore, after the light is refracted by the light homogenizing films with the intervals to homogenize the light, a large sheet of obvious line light source can be formed, and the light intensity distribution of the line light source is uniform and strong; the light homogenizing effect of the two light homogenizing films with the numerical values of 15 percent and 20 percent is better than that of the light homogenizing film with the numerical value of 6 percent. Through experiments, if the spacing is too narrow (for example, the spacing width W is only 6% of the length of the adjacent edge 42), the light homogenizing effect of the light homogenizing film is poor, and if the spacing is too wide (for example, the spacing width W is 20% of the length of the adjacent edge 42), the light homogenizing effect of the light homogenizing film is not obviously improved, but the duty ratio of the light homogenizing film is reduced to influence the light homogenizing effect, so that the light homogenizing effect of the light homogenizing film is good within the numerical range of 13% -17% of the length of the adjacent edge 42, and the spacing width W is preferably 15%.
Unpreferably, the concave spaces 41 of the micro-grooves 4 on the second end surface 22 of the light uniformizing film 11 can also be changed into congruent non-regular rectangular pyramids, i.e. 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 11 is slightly inferior to that of the light uniformizing film 11 with a square bottom surface, but the point light sources can still be uniformly distributed into line light sources.
In actual use, the light uniformizing film 11 and other devices are packaged together to form the backlight packaging module 5 shown in fig. 15, for example, which is located on the back surface of the LCD panel 6. 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 angle difference value may be within plus or minus 1 ° (for example, the angle difference value is 90 °, and may be within 89 ° to 91 °), or within plus or minus 3 °, or within plus or minus 5 °, or within plus or minus 10 °, as long as the light uniformizing effect of the light uniformizing film 11 is better than that of the prior art within the deviation range.
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. In this embodiment, the number of the light equalizing films 11 of the backlight source encapsulation module 5 is two. In other embodiments, the number of the light uniformizing films 11 may be three or more.
Another light homogenizing film 12 is shown in fig. 16, and this light homogenizing film 12 has the same structure as the light homogenizing film 11 described above, except that the concave spaces 41 of the micro grooves 4 of the first end face 21 of this light homogenizing film 12 are not rectangular pyramids, but congruent regular triangular pyramids, see fig. 17 and 18, whose bottom faces are regular triangles, and are located on the first end face 21 of the substrate 2. Every two adjacent bottom surface regular triangles of the light homogenizing film 12 are adjacent at intervals, the adjacent sides 42 of the two adjacent bottom surface regular triangles are equal and parallel to each other, a space is reserved between the two adjacent sides 42, and the width W of the space is 13% -17% of the length of the adjacent sides 42, preferably 15% (see fig. 5-8). Similarly, the concave spaces 41 of the micro-grooves 4 on the first end surface 21 of the light-homogenizing film 12 can also be changed into congruent non-regular triangular pyramids, that is, the bottom surfaces of the pyramids are only in a general triangle of a non-regular triangle, and the light-homogenizing effect of the light-homogenizing film is slightly inferior to that of the light-homogenizing film 12 with the bottom surface in a regular triangle, but the point light sources can still be uniformly opened into line light sources. 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.
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)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111455072.1A CN114019727B (en) | 2021-12-01 | 2021-12-01 | A light-uniform film for backlight source packaging module and backlight source packaging module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111455072.1A CN114019727B (en) | 2021-12-01 | 2021-12-01 | A light-uniform film for backlight source packaging module and backlight source packaging module |
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| CN114019727A true CN114019727A (en) | 2022-02-08 |
| CN114019727B CN114019727B (en) | 2025-01-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114637144A (en) * | 2022-04-27 | 2022-06-17 | 重庆翰博显示科技研发中心有限公司 | High-brightness light homogenizing film and ultrathin backlight module |
| CN114706246A (en) * | 2022-03-28 | 2022-07-05 | 东莞市光志光电有限公司 | Light splitting film and processing method thereof, backlight module, rolling wheel and processing method thereof |
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| US20090244715A1 (en) * | 2008-04-01 | 2009-10-01 | Hon Hai Precision Industry Co., Ltd. | Prism sheet |
| 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 |
| 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 |
| 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 |
| CN216817124U (en) * | 2021-12-01 | 2022-06-24 | 广州森万象新材料科技有限公司 | A kind of uniform light film for backlight source packaging module, backlight source packaging module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20090244715A1 (en) * | 2008-04-01 | 2009-10-01 | Hon Hai Precision Industry Co., Ltd. | Prism sheet |
| 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 |
| 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 |
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| CN216817124U (en) * | 2021-12-01 | 2022-06-24 | 广州森万象新材料科技有限公司 | A kind of uniform light film for backlight source packaging module, backlight source packaging module |
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| CN114706246A (en) * | 2022-03-28 | 2022-07-05 | 东莞市光志光电有限公司 | Light splitting film and processing method thereof, backlight module, rolling wheel and processing method thereof |
| CN114637144A (en) * | 2022-04-27 | 2022-06-17 | 重庆翰博显示科技研发中心有限公司 | High-brightness light homogenizing film and ultrathin backlight module |
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| Publication number | Publication date |
|---|---|
| CN114019727B (en) | 2025-01-07 |
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