CN218825070U - High bright microstructure of LED backlight unit - Google Patents
High bright microstructure of LED backlight unit Download PDFInfo
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- CN218825070U CN218825070U CN202223295747.3U CN202223295747U CN218825070U CN 218825070 U CN218825070 U CN 218825070U CN 202223295747 U CN202223295747 U CN 202223295747U CN 218825070 U CN218825070 U CN 218825070U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model discloses a high-brightness microstructure of an LED backlight module, which relates to the technical field of high-brightness microstructures and comprises a light guide positive layer group and a fluorescence brightening layer, wherein the fluorescence brightening layer is just attached to the outer peripheral side of the light guide positive layer group; the light guide positive layer group comprises an inner light guide layer, a light diffusion layer, an incremental soft light layer, a first soft light film and a protective layer which are oppositely attached in sequence; the inner light guide layer faces the light emitting position; the fluorescent brightening layer is used for reflecting residual light on the periphery of the light guide layer group; guiding and coarse homogenizing treatment of the light source by the inner light guide layer, after homogenizing the light by the light diffusion layer to complete homogenization treatment of the light, the light enters the fluorescent brightening layer and is subjected to brightening-primary softening-brightening treatment, so that the light keeps high color rendering performance; and then, light leakage of the light guide positive layer group is emitted into the first soft light film and the protective layer to be mixed through the fluorescent brightening layer to carry out secondary mixing of side light, so that the utilization rate of emitted light and the softening effect are improved under the condition of keeping the color rendering performance of the light.
Description
Technical Field
The utility model relates to a highlight micro-structure technical field, in particular to high bright micro-structure of LED backlight unit.
Background
With the establishment of a low-carbon life mode in society, low-carbon circular economy is derived, a multi-energy-saving product is promoted through the low-carbon life mode and the low-carbon circular economy, and the energy-saving LED lamp is one of the energy-saving products.
As disclosed in the chinese patent: direct type backlight high-brightness optical film microstructure, publication number: CN212675317U, which utilizes the characteristics of various optical coatings to brighten and soften the light of LCD light source, so that the eyes will not be damaged too much when people look at the screen for a long time.
However, the edges of the microstructure are not optically sealed, and light leaks from the edges of the microstructure during the brightening and softening process of the light source, so that the utilization rate of the light source is not the highest.
As another example of the published chinese patents: the utility model provides a high bright microstructure optical film structure of LED backlight unit, the publication number: CN217279209U, which uses multiple side masks to seal the edge of the high brightness microstructure optical film structure, and further uses the light leaking from the edge of the high brightness microstructure optical film structure.
However, in the first scheme, the multi-prism film in the microstructure is arranged to refract a large amount of light in a short distance, and finally, the sharpness of the light is reduced through the diffusion film and the soft film, so that the light has a short conduction distance in the process, and the softening of the light is not gradual, so that the brightness and color rendering performance of the light are too low, the light is easy to distort and the softening effect is poor.
In the second scheme, the light reflected by the edge of the microstructure is not subjected to the soft light treatment, so that when the light at the edge enters the front surface of the microstructure again, part of the light enters the front surface of the microstructure after the soft light treatment, and the light which is not subjected to the soft light treatment is mixed into the front surface of the microstructure, so that the light mixing is not mediated, the whole soft light treatment effect is reduced, and the light color rendering degree is reduced.
Therefore, in order to solve the problems of reduced light color rendering performance and poor soft light processing effect in the existing highlight microstructure technology, a highlight microstructure of an LED backlight module, which can achieve finer light processing, is urgently needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high bright microstructure of LED backlight unit, current high bright microstructure technique, light is handled and is had light color rendering property to descend, and the poor problem of effect is handled to the sheen.
In order to solve the technical problem, the utility model provides a high bright microstructure of LED backlight module, including light guide positive layer group and fluorescence blast layer, the fluorescence blast layer just to laminating on the periphery side of light guide positive layer group; the light guide positive layer group comprises an inner light guide layer, a light diffusion layer, an incremental soft light layer, a first soft light film and a protective layer which are oppositely attached in sequence; the inner light guide layer faces the light emitting position; the fluorescent brightening layer is used for reflecting residual light on the periphery of the light guide positive layer group.
In one embodiment, the light diffusion layer is a light diffusion film.
In one embodiment, the incremental soft light layer comprises a near-beam prism film, a second soft light film and a far-beam prism film which are oppositely attached in a near-sequence manner; the near-beam prism film is attached to the light diffusion layer in a right-to-right mode; the high beam prism film is just attached to the first soft light film.
In one embodiment, the cross-sectional shape of the prisms on the low beam prism film is an isosceles triangle.
In one embodiment, the vertex angle of the isosceles triangle is 113-119 degrees.
In one embodiment, the cross-sectional shape of the prisms on the high beam prism film is an isosceles trapezoid.
In one embodiment, the vertex angle of the isosceles trapezoid is 132-138 degrees.
In one embodiment, the protective layer is a light guide plate.
In one embodiment, the fluorescence brightening layer comprises a reflecting film and a fluorescent film which are oppositely attached from outside to inside in sequence; the fluorescent film is attached to the outer periphery side of the light guide positive layer group in a facing mode.
The utility model has the advantages as follows:
light homogenization treatment: because the inner light guide layer faces the light emitting position, the inner light guide layer is used as a plate for filtering the light source for the first time, and can preliminarily and uniformly convert the linear light emitted by the light source into surface light so as to form a roughly processed surface light source; the surface light source is incident into the light diffusion layer, namely the light diffusion film, the roughly processed surface light source is filtered by the light diffusion film, and the roughly processed surface light source is secondarily homogenized to become a finely processed surface light source.
Brightening by light-primary softening-brightening treatment: the surface light source of fine processing incides to near light prism membrane with very even state, accomplishes preliminary brightening, in order to reduce the sharpness of light, light passes through the filtration of the gentle membrane of second accomplishes homogenization behind the first softening meter brightening, and light then gets into far light prism membrane carries out the secondary brightening, and the secondary brightening makes light after the first softening promote luminance and brilliance, reduces the reduction of the color rendering property of light.
Secondary mixing of side light: the fluorescent brightening layer comprises a reflecting film and a fluorescent film which are sequentially and oppositely attached from outside to inside; the fluorescent film is attached to the outer periphery side of the light guide positive layer group; the fluorescent film firstly absorbs the light leakage at the side surface of the light guide positive layer group for the first time, the rest light rays passing through the fluorescent film are reflected by the reflecting film and then pass through the fluorescent film again, the fluorescent film absorbs the energy of the light rays again, and the fluorescent film emits light to enable the softened light rays to be emitted into the light guide positive layer group; the utilization rate of the light is improved, and meanwhile the light reflected into the light guide positive layer group can be softened.
The light rays processed by the increment light softening layer on the front surface and the light rays processed by the fluorescence brightening layer on the side surface are softened and mixed by the first light softening film, and then enter the light guide plate of the protective layer to be homogenized for three times before being emitted; the light of light source carries out homogenization and softening treatment gradually for a plurality of times before penetrating the protective layer, so that the light penetrating the protective layer can be fully softened, the reduction of the color rendering performance of the light can be reduced, and the utilization rate and the softening effect of the light are improved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required for the embodiments will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of the overall cross-sectional structure of the present invention;
fig. 2 is a schematic structural view of a low beam prism film of the present invention;
fig. 3 is a schematic cross-sectional structure view of the low beam prism film of the present invention;
fig. 4 is a schematic structural view of the high beam prism film of the present invention;
fig. 5 is a schematic cross-sectional structure view of the high beam prism film of the present invention.
The reference numbers are as follows:
1. a light guide positive layer group; 11. an inner light guide layer; 12. a light diffusion layer; 13. a first light softening film; 14. a protective layer;
2. an incremental softening layer; 21. a low-beam prism film; 211. an isosceles triangle; 22. a second light-softening film; 23. a high beam prism film; 231. an isosceles trapezoid;
3. a fluorescent brightness enhancing layer; 31. a reflective film; 32. a fluorescent film.
Detailed Description
The technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
One embodiment of the highlight microstructure is shown in fig. 1 to 5, and comprises a light guide positive layer group 1 and a fluorescent brightening layer 3, wherein the fluorescent brightening layer 3 is attached to the outer peripheral side of the light guide positive layer group 1 in a facing mode; the light guide positive layer group 1 comprises an inner light guide layer 11, a light diffusion layer 12, an incremental soft layer 2, a first soft film 13 and a protective layer 14 which are oppositely attached in sequence; the inner light guide layer 11 faces the light emitting position; the fluorescent brightening layer 3 is used for reflecting residual light on the peripheral side of the light guide layer group 1.
Regarding the specific function of the inner light guide layer 11, the inner light guide layer is used for mounting a light guide plate. The light guide plate is characterized in that light guide points are printed on the bottom surface of an optical acrylic plate by using an optical acrylic/PC plate and then using a high-tech material with extremely high refractive index and no light absorption through laser engraving, V-shaped cross grid engraving and UV screen printing technologies. The optical-grade acrylic sheet is used for absorbing the light emitted from the lamp to stay on the surface of the optical-grade acrylic sheet, when the light irradiates each light guide point, the reflected light can be diffused towards each angle, and then the reflected light is damaged, so that the light is emitted from the front surface of the light guide plate. The light guide plate can uniformly emit light through various light guide points with different densities and sizes. The inner light guide layer 11 can convert a linear light source into a surface light source, and is used as a pretreatment step for light source homogenization, so that the surface light source formed after pretreatment can enter the light diffusion layer 12 in a uniform state to perform further light source homogenization treatment.
As for the specific material used for the light diffusion layer 12, the light diffusion layer 12 is a light diffusion film.
Specifically, the light diffusion film uses PET as a base material, and optical scattering particles are coated on the base material. Light from the light source passes through the diffusion layer using PET as the base material and passes through media with different refractive indexes, so that a plurality of refraction, reflection and scattering phenomena occur.
The light diffusion film mainly functions to correct the diffusion angle, which increases the light radiation area, but reduces the light intensity per unit area, i.e., reduces the luminance. After the light source is diffused by the diffusion material, the light source can be changed into a secondary light source with larger area, better uniformity and stable chromaticity. The light scattering plate has the function of diffusing light, namely, the light can be scattered on the surface of the light scattering plate, and the light can be scattered softly and uniformly.
In the specific configuration of the incremental soft light layer 2, the incremental soft light layer 2 includes a low beam prism film 21, a second soft light film 22, and a high beam prism film 23, which are bonded to face each other in a close-to-close manner; the low beam prism film 21 faces the attached light diffusion layer 12; the high beam prism film 23 is attached to the first light diffusing film 13.
Regarding the specific prism microstructure of the low beam prism film 21, as shown in fig. 1, 2 and 3, the cross-sectional shape of the prisms on the low beam prism film 21 is an isosceles triangle 211. The vertex angle of the isosceles triangle 211 is 113-119 degrees.
Specifically, the vertex angle of the isosceles triangle 211 is 116 degrees.
Regarding the specific prism microstructure of the high-beam prism film 23, as shown in fig. 1, 4 and 5, the cross-sectional shape of the prisms on the high-beam prism film 23 is an isosceles trapezoid 231. The apex angle of the isosceles trapezoid 231 is 132-138 degrees.
Specifically, the angle of the isosceles trapezoid 231 is 135 degrees.
As a specific material of the protective layer 14, the protective layer 14 is a light guide plate. The light guide plate made of hard material protects the multilayer film structure inside the light guide plate, and meanwhile, the light guide plate is made of optical acrylic or PC material, so that the light guide plate cannot reduce the output of light.
With regard to the specific structure of the above-mentioned fluorescent brightness enhancing layer 3, in this embodiment, as shown in fig. 1, the fluorescent brightness enhancing layer 3 comprises a reflective film 31 and a fluorescent film 32 which are attached to face each other from the outside to the inside; the phosphor layer 32 is attached to the outer peripheral side of the light guide positive layer group 1 in a facing manner.
The reflecting film 31 is a retro-reflecting material which is made into a film and can be directly applied, and can effectively reflect and converge light leaked from the edge of the front light guide front layer group 1; in order to reduce the sharpness and the brightness of the reflected light, a fluorescent film 32 is arranged between the reflecting film 31 and the edge of the light guide positive layer group 1, the energy of the light passing through the fluorescent film 32 can be absorbed, the light is emitted in a self-luminous mode to form a secondary light source, the brightness of the light can be reduced by the fluorescent film 32, the light is softened, the light entering the light guide positive layer group 1 from the edge of the light guide positive layer group 1 can be better mixed with the positive light, the reduction of the light color rendering caused by the disordered light mixing is avoided, and the soft light effect of the light is improved while the light utilization rate is improved.
Processing light rays in the highlight microstructure:
light homogenization treatment: the inner light guide layer 11 is used as a plate for filtering the light source for the first time, and can preliminarily and uniformly convert linear light emitted by the light source into surface light so as to form a roughly processed surface light source; the surface light source is incident into the light diffusion layer 12, that is, the light diffusion film, and the surface light source subjected to the rough treatment is filtered by the light diffusion film to be secondarily homogenized so as to be a surface light source subjected to the fine treatment.
Brightening by light-primary softening-brightening treatment: the area source of fine processing is with very even state, incides to passing light prism membrane 21, accomplishes preliminary brightening, in order to reduce the sharpness of light, the homogenization treatment after the first softening meter brightening is accomplished in the filtration of light through second gentle membrane 22, light then gets into far-reaching light prism membrane 23 and carries out the secondary brightening, the secondary brightening makes light after the first softening promote luminance and brilliance, reduces the reduction of the color rendering property of light.
Secondary mixing of side light: the fluorescence brightness enhancement layer 3 comprises a reflecting film 31 and a fluorescent film 32 which are oppositely attached from outside to inside in sequence; the fluorescent film 32 is attached to the outer peripheral side of the light guide positive layer group 1; the fluorescent film 32 firstly absorbs light leaked from the side of the light guide layer group 1, the rest light passing through the fluorescent film 32 is reflected by the reflective film and then passes through the fluorescent film 32 again, the fluorescent film 32 absorbs the energy of the light again, and the fluorescent film 32 emits light to enable the softened light to be emitted into the light guide layer group 1; the utilization rate of the light is improved, and meanwhile, the light reflected into the light guide positive layer group 1 can be softened.
The light processed by the incremental soft layer 2 on the front surface and the light processed by the fluorescent brightening layer 3 on the side surface are softened and mixed in the first soft film 13, and then enter the light guide plate of the protective layer 14 to be homogenized for three times before being emitted; before the light of the light source is emitted out of the protective layer 14, the light is gradually homogenized and softened for a plurality of times, so that the utilization rate and the softening effect of the emitted light are improved.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (9)
1. A high brightness microstructure of LED backlight module is characterized in that,
the fluorescent brightening layer is right attached to the outer peripheral side of the light guide positive layer group;
the light guide positive layer set comprises an inner light guide layer, a light diffusion layer, an incremental soft light layer, a first soft light film and a protective layer which are sequentially and oppositely attached;
the inner light guide layer faces to the light ray emitting position;
the fluorescent brightening layer is used for reflecting residual light on the periphery of the light guide positive layer group.
2. The highlight microstructure of claim 1,
the light diffusion layer is a light diffusion film.
3. The highlight microstructure of claim 1,
the incremental soft light layer comprises a dipped beam prism film, a second soft light film and a high beam prism film which are closely and sequentially opposite to each other;
the near-beam prism film is attached to the light diffusion layer in a right-to-right mode;
the far-reaching prism film is just attached to the first light softening film.
4. The highlight microstructure of claim 3,
the cross section of the prism on the low-beam prism film is in an isosceles triangle shape.
5. The highlight microstructure of claim 4,
the vertex angle of the isosceles triangle is 113-119 degrees.
6. The highlight microstructure of claim 3,
the cross section of the prism on the high beam prism film is in an isosceles trapezoid shape.
7. The highlight microstructure of claim 6,
the vertex angle of the isosceles trapezoid is 132-138 degrees.
8. The highlight microstructure of claim 1,
the protective layer is a light guide plate.
9. The highlight microstructure of claim 1,
the fluorescent brightening layer comprises a reflecting film and a fluorescent film which are oppositely attached from outside to inside in sequence;
the fluorescent film is attached to the outer periphery of the light guide positive layer group in a facing mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223295747.3U CN218825070U (en) | 2022-12-08 | 2022-12-08 | High bright microstructure of LED backlight unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223295747.3U CN218825070U (en) | 2022-12-08 | 2022-12-08 | High bright microstructure of LED backlight unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218825070U true CN218825070U (en) | 2023-04-07 |
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| CN202223295747.3U Active CN218825070U (en) | 2022-12-08 | 2022-12-08 | High bright microstructure of LED backlight unit |
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- 2022-12-08 CN CN202223295747.3U patent/CN218825070U/en active Active
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