CN114815036A - Light guide plate, light guide plate assembly and light guide plate manufacturing method - Google Patents
Light guide plate, light guide plate assembly and light guide plate manufacturing method Download PDFInfo
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- CN114815036A CN114815036A CN202210549322.6A CN202210549322A CN114815036A CN 114815036 A CN114815036 A CN 114815036A CN 202210549322 A CN202210549322 A CN 202210549322A CN 114815036 A CN114815036 A CN 114815036A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
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- 238000001259 photo etching Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 4
- 238000005253 cladding Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
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- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000004891 communication Methods 0.000 claims 1
- 238000005498 polishing Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 abstract description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 10
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- 238000012986 modification Methods 0.000 description 2
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- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000010147 laser engraving Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0065—Manufacturing aspects; Material aspects
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0073—Light emitting diode [LED]
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/009—Positioning aspects of the light source in the package
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a light guide plate, a light guide plate assembly and a light guide plate manufacturing method.A light guide plate comprises a light guide layer, a grating layer and a reflecting grating layer, wherein the grating layer and the reflecting grating layer are respectively adhered and fixed on the front surface and the back surface of the light guide layer; the light guide plate assembly comprises a bottom plate and two light sources, a light reflecting surface is formed on the inner side surface of the bottom plate in a polishing mode, second right-angle edges are formed by bending the front side edge and the rear side edge of the bottom plate, clearance grooves are formed in the left side edge and the right side edge of the bottom plate, and the two light sources are installed in the clearance grooves in a one-to-one corresponding clearance fit mode; the manufacturing method of the light guide plate comprises the following steps of 1, extruding plastic original particles into a plate-shaped structure by using a plate extruding machine; 2, processing an upper die and a lower die by using a photoetching machine; and 3, putting the plate-shaped structure into the lower die, and manufacturing the light guide layer by using an extrusion device.
Description
Technical Field
The invention relates to the field of light guide plates, in particular to a light guide plate, a light guide plate assembly and a light guide plate manufacturing method.
Background
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 and 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.
When the light guide plate is applied to the LED liquid crystal display, since the liquid crystal cell itself does not emit light, the light source needs to be used to illuminate the liquid crystal cell through the light guide plate, but the light guide plate on the market has the following defects:
the bottom plate, the reflecting layer, the light guide layer, the light enhancement layer, the diffusion layer and the prism are required to be stacked together, so that the thickness is large, the development of lightness and thinness of the display is not facilitated, the assembly is inconvenient, and the phenomenon of dirt is easy to occur in the assembly process;
light leakage easily occurs at the side edge of the light guide layer, so that the consumed energy consumption of the display under the same brightness is higher;
when the light source is closer to the light guide layer, a light-gathering point is easily formed on the liquid crystal unit, which is not favorable for the development of the lightness and thinness of the display.
Disclosure of Invention
The invention provides a technical scheme capable of solving the problems in order to overcome the defects.
The utility model provides a light guide plate, including the leaded light layer, grating layer and reflection grating layer are pasted respectively and are fixed at the front and the back on leaded light layer, the left and right sides border on leaded light layer all is provided with the light incident face, the front on leaded light layer is provided with the play polished surface, grating layer covers the play polished surface setting, the back on leaded light layer is provided with a plurality of first miniature prism posts, the cross-section of first miniature prism post is the triangle-shaped structure, reflection grating layer covers a plurality of first miniature prism post settings, reflection grating layer's front and back both sides border all extends the setting of leaded light layer, the shaping of all buckling in both sides has first right angle limit around the reflection grating layer, two first right angle limits are the cladding respectively at the front and back both sides border of leaded light layer.
As a further scheme of the invention: the length direction of first miniature prism post and the light incidence face between mutually perpendicular set up, the left and right sides border of emergent face all is provided with a plurality of miniature prism posts of second, mutually perpendicular set up between the length direction of first miniature prism post and the length direction of second miniature prism post.
As a further scheme of the invention: the section of the second micro prism column is in a continuous arc structure, and the refractive index of the first micro prism column is larger than that of the second micro prism column.
Light guide plate subassembly, install on foretell light guide plate, including bottom plate and two light sources, the inboard side finish polishing shaping of bottom plate has the plane of reflection, the shaping of all buckling at both sides border around the bottom plate has second right-angle side, the cladding of second right-angle side one-to-one is in the outside on first right-angle side, the bottom plate covers the back at the reflecting grating layer, the light guide layer setting is all extended to the left and right sides of bottom plate, the equal shaping in the left and right sides of bottom plate has the clearance fluting, two light source one-to-ones clearance fit install in the clearance fluting, the light source sets up towards the light incident plane.
As a further scheme of the invention: the light source adopts LED lamp strip, and one side that the light source is close to the light incidence face is provided with equal worn-out fur.
The light guide plate manufacturing method is used for manufacturing the light guide plate and comprises the following steps:
and 4, processing the light grating layer and the reflection grating layer by using a grating mold, wherein the front side and the rear side of the reflection grating layer are provided with first right-angle edges, the square sizes of the grating layer and the reflection grating layer correspond to those of the light guide layer, and then bonding the light guide layer between the grating layer and the reflection grating layer by using bonding glue to form the light guide plate.
As a further scheme of the invention: and 3, heating the temperature of the plate-shaped structure to the melting point temperature of the plastic raw particles before extrusion.
As a further scheme of the invention: and coating a diffusant on the upper surface of the grating layer.
Compared with the prior art, the invention has the beneficial effects that:
1. the grating layer and the reflecting grating layer are respectively adhered to two surfaces of the light guide layer, multi-layer assembly is not needed, dirt is prevented from appearing at an assembled gap, and development of lightness and thinness of the display is facilitated;
2. the reflective grating layer can be used for reflecting light rays, the grating layer diffracts by using transmitted light, a light source irradiates the light guide layer through the light incidence surface and then can be converted into linear light through the grating layer to illuminate the liquid crystal unit, screen display is realized by uniformly illuminating the liquid crystal unit, and the reflective grating layer and the first right-angle edge thereof can reduce the phenomenon of light leakage;
3. the second micro prism column can shield the light source, so that a light-gathering point is prevented from being generated on the liquid crystal unit, the display effect is better, and the development of the lightness and thinness of the display is facilitated.
4. The light-tight can effectively be prevented to the inboard reflection of light face of bottom plate and second right-angle side, and the light source can be absorbed in and keep away the installation in the open slot, has reduced the frame size of display, is favorable to the development of the narrow frame of display.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of an explosive structure of the present invention.
Shown in the figure: 1. a light guide layer; 2. a grating layer; 3. a reflective grating layer; 4. a light incident surface; 5. a light emitting surface; 6. a first micro prism column; 7. a first right-angle side; 8. a second micro prism column; 9. a light source; 10. a light-reflecting surface; 11. a second right-angle side; 12. carrying out clearance grooving; 13. a light homogenizing plate; 14. a base plate.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the light guide plate of the present invention includes a light guide layer 1, a grating layer 2 and a reflective grating layer 3, the grating layer 2 and the reflective grating layer 3 are respectively adhered and fixed on the front and back of the light guide layer 1, the left and right edges of the light guide layer 1 are respectively provided with a light incident surface 4, the front of the light guide layer 1 is provided with a light emergent surface 5, the grating layer 2 covers the light emergent surface 5, the back of the light guide layer 1 is provided with a plurality of first micro prism columns 6, the cross section of the first micro prism columns 6 is in a triangular structure, the reflective grating layer 3 covers the plurality of first micro prism columns 6, the front and back edges of the reflective grating layer 3 are respectively extended out of the light guide layer 1, the front and back sides of the reflective grating layer 3 are respectively bent and formed with first right angle edges 7, and the front and back edges of the two first right angle edges 7 are respectively covered on the front and back edges of the light guide layer 1;
the principle is as follows: paste grating layer 2 and reverberation grating layer 3 respectively and lead the two sides of light layer 1, need not the multilayer and assemble, avoid dirty appearance to the clearance department of assembling, be favorable to the development of the light thin nature of display, reverberation grating layer 3 can be used for the light reflection, grating layer 2 utilizes the transmitted light to diffract, light source 9 shines can be changed into straight line light through grating layer 2 and shine the liquid crystal unit through light incident surface 4 after leading light layer 1, guarantee that the liquid crystal unit that evenly shines realizes the screen display, reverberation grating layer 3 and its first right angle limit 7 can alleviate the phenomenon of light leak.
As a further scheme of the invention: the length direction of the first micro prism column 6 and the light incident surface 4 are arranged vertically, the left and right side edges of the light emergent surface 5 are provided with a plurality of second micro prism columns 8, and the length direction of the first micro prism column 6 and the length direction of the second micro prism columns 8 are arranged vertically; the second micro prism column 8 can shield the light source 9, so that a light-gathering point is prevented from being generated on the liquid crystal unit, the display effect is better, and the development of the lightness and thinness of the display is facilitated.
As a further scheme of the invention: the section of the second micro prism column 8 is in a continuous arc structure, and the refractive index of the first micro prism column 6 is larger than that of the second micro prism column 8.
The light guide plate assembly is installed on the light guide plate and comprises a bottom plate 14 and two light sources 9, a light reflecting surface 10 is formed on the inner side surface of the bottom plate 14 in a polishing mode, second right-angle edges 11 are formed by bending the edges of the front side and the rear side of the bottom plate 14 respectively, the second right-angle edges 11 are coated on the outer sides of the first right-angle edges 7 in a one-to-one correspondence mode, the bottom plate 14 covers the back surface of the reflecting grating layer 3, light guide layers 1 extend from the left side and the right side of the bottom plate 14 respectively, clearance grooves 12 are formed in the left side and the right side of the bottom plate 14 respectively, the two light sources 9 are installed in the clearance grooves 12 in a one-to-one correspondence mode in a clearance fit mode, and the light sources 9 are arranged towards the light incident surface 4; the light-reflecting surface 10 on the inner side of the bottom plate 14 and the second right-angle side 11 can effectively prevent light leakage, and the light source 9 can be sunk into the clearance groove 12 for installation, so that the size of the frame of the display is reduced, and the development of the narrow frame of the display is facilitated.
As a further scheme of the invention: the light source 9 adopts an LED lamp bar, and a light homogenizing plate 13 is arranged on one side of the light source 9 close to the light incident surface 4; the light source 9 is illuminated toward the light incident surface 4 through the light uniformizing plate 13, thereby preventing the formation of a light condensing point on the light guide layer 1.
The light guide plate manufacturing method is used for manufacturing the light guide plate and comprises the following steps:
and 4, processing the light grating layer 2 and the reflection light grating layer 3 by using a grating mold, wherein the front side and the rear side of the reflection grating layer 2 are provided with first right-angle edges 7, the square sizes of the grating layer 2 and the reflection light grating layer 3 correspond to those of the light guide layer 1, and then bonding the light guide layer 1 between the grating layer 2 and the reflection light grating layer 3 by using bonding glue to form the light guide plate.
As a further scheme of the invention: and 3, heating the temperature of the plate-shaped structure to the melting point temperature of the plastic raw particles before extrusion, and reducing the pressure required by extrusion forming.
As a further scheme of the invention: and coating a diffusant on the upper surface of the grating layer 2 to enable the grating layer 2 to have the function of diffusing and atomizing light.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a light guide plate, a serial communication port, including the leaded light layer, grating layer and reflection grating layer are pasted respectively and are fixed at the front and the back on leaded light layer, the left and right sides border of leaded light layer all is provided with the light incident face, the front of leaded light layer is provided with the light emergence face, grating layer covers the setting of light emergence face, the back on leaded light layer is provided with a plurality of first miniature prism columns, the cross-section of first miniature prism column is the triangle-shaped structure, reflection grating layer covers a plurality of first miniature prism columns and sets up, reflection grating layer's front and back both sides border all extends the setting of leaded light layer, reflection grating layer's front and back both sides are all buckled the shaping and are had first right angle limit, two first right angle limits are the cladding respectively at the front and back both sides border of leaded light layer.
2. The light guide plate according to claim 1, wherein the first micro prism columns are arranged to be perpendicular to the light incident surface in a longitudinal direction, the second micro prism columns are arranged to be perpendicular to the light exit surface in a left and right side edges, and the first micro prism columns and the second micro prism columns are arranged to be perpendicular to each other in a longitudinal direction.
3. The light guide plate of claim 2, wherein the second micro-prism columns have a continuous arc-shaped cross section, and the refractive index of the first micro-prism columns is greater than that of the second micro-prism columns.
4. The light guide plate assembly is installed on the light guide plate according to any one of claims 1 to 3, and comprises a bottom plate and two light sources, wherein the inner side surface of the bottom plate is polished and formed with a light reflecting surface, the front side edge and the rear side edge of the bottom plate are bent and formed with second right-angle edges, the second right-angle edges are wrapped on the outer sides of the first right-angle edges in a one-to-one correspondence manner, the bottom plate covers the back surface of the reflecting grating layer, the left side and the right side of the bottom plate are respectively extended with a light guide layer, the left side and the right side of the bottom plate are respectively formed with a clearance groove, the two light sources are installed in the clearance grooves in a one-to-one correspondence manner, and the light sources are arranged towards the light incident surface.
5. The light guide plate of claim 4, wherein the light source is an LED light bar, and a light homogenizing plate is disposed on a side of the light source adjacent to the light incident surface.
6. A method for manufacturing a light guide plate according to any one of claims 1 to 3, comprising the steps of:
step 1, manufacturing a light guide layer: putting the plastic raw particles into a hopper of a plate extruding machine, extruding the plastic raw particles into a plate-shaped structure after high-temperature heating, and cutting the plate-shaped structure into a proper square size;
step 2, processing an upper die and a lower die of the light guide layer die by using a photoetching machine, wherein the left side and the right side in the upper die are provided with a groove position of a second micro prism column, and the lower die is internally provided with a groove position of a first micro prism column;
step 3, assembling the upper die and the lower die into an extrusion device, putting the plate-shaped structure with the proper square size in the step 1 into the lower die, and pressing down the upper die to extrude the plate-shaped structure so as to manufacture the light guide layer with the first micro prism column and the second micro prism column;
and 4, processing the light grating layer and the reflection grating layer by using a grating mold, wherein the front side and the rear side of the reflection grating layer are provided with first right-angle edges, the square sizes of the grating layer and the reflection grating layer correspond to those of the light guide layer, and then bonding the light guide layer between the grating layer and the reflection grating layer by using bonding glue to form the light guide plate.
7. The method for manufacturing a light guide plate according to claim 6, wherein the temperature of the plate-shaped structure is heated to the melting point of the plastic raw particles before the pressing in step 3.
8. The method of manufacturing a light guide plate according to claim 6, wherein a diffusing agent is coated on the upper surface of the grating layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210549322.6A CN114815036B (en) | 2022-05-20 | 2022-05-20 | Light guide plate, light guide plate assembly and light guide plate manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210549322.6A CN114815036B (en) | 2022-05-20 | 2022-05-20 | Light guide plate, light guide plate assembly and light guide plate manufacturing method |
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| CN114815036A true CN114815036A (en) | 2022-07-29 |
| CN114815036B CN114815036B (en) | 2024-05-31 |
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