CN108873152A - The production method of the production method and display device of light guide plate - Google Patents
The production method of the production method and display device of light guide plate Download PDFInfo
- Publication number
- CN108873152A CN108873152A CN201810786444.0A CN201810786444A CN108873152A CN 108873152 A CN108873152 A CN 108873152A CN 201810786444 A CN201810786444 A CN 201810786444A CN 108873152 A CN108873152 A CN 108873152A
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- Prior art keywords
- guide plate
- light guide
- daughter board
- foaming agent
- polymer material
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Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
-
- 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
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0041—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided in the bulk of the light guide
Abstract
The embodiment of the invention discloses a kind of production methods of light guide plate, including：Polymer material is provided；Foaming agent is provided；And the polymer material is mixed into simultaneously injection moulding mold with the foaming agent with predetermined manner, the light guide plate of the bubble comprising being generated by the foaming agent is made.The embodiment of the invention also discloses a kind of production methods of display device.The embodiment of the present invention can mitigate the weight of light guide plate by being formed with bubble in light guide plate in the case where not reducing light guide plate；Furthermore, bubble in light guide plate can destroy the total reflection of light in light guide plate, the light-out effect of atomization is generated, so that more light are projected from the light-emitting surface of light guide plate, finally realizes the weight for mitigating light guide plate while guaranteeing light guide plate and the technical effect for improving show uniformity.
Description
Technical field
The present invention relates to field of display technology more particularly to the production methods and a kind of system of display device of a kind of light guide plate
Make method.
Background technique
Currently, often forming area source, side entering type light by light guide plate combination side entering type light source in field of display technology
The light that source issues enters light guide plate from the incidence surface of light guide plate side, after the transmitting and diffusion of light guiding points on light guide plate
From the light-emitting surface of light guide plate project, with to display panel provide work needed for light.
However, needing to inject its most of light in light guide plate, often leading to for the light source for making full use of LED to issue
Crossing makes the light guide plate of production reach certain thickness to solve problem above, although the light guide plate for using this kind of method to make can be with
The impingement rate of light is improved, it can also cause the thickness of the display device with the light guide plate increases, does not meet current display
The development trend of device lightness, and emergent ray uniformity is bad.
Summary of the invention
To solve the above-mentioned problems, the embodiment of the present invention provides the production method and a kind of display device of a kind of light guide plate
Production method can reduce the weight of light guide plate and display device through the embodiment of the present invention and improve show uniformity.
To achieve the above object, the production method of a kind of light guide plate provided in an embodiment of the present invention, including：Polymer is provided
Material；Foaming agent is provided；And the polymer material is mixed into simultaneously injection moulding mold with the foaming agent with predetermined manner,
The light guide plate of the bubble comprising being generated by the foaming agent is made.
The polymer material is polymethyl methacrylate or polycarbonate in one of the embodiments,.
It is described in one of the embodiments, that the polymer material is mixed and infused with predetermined manner with the foaming agent
Enter molding die, includes so that the light guide plate of the bubble comprising being generated by the foaming agent is made：By the polymer material and institute
It states foaming agent and uniformly mixes and inject the molding die, to be made comprising gas that is equally distributed and being generated by the foaming agent
The light guide plate of bubble.
It is described in one of the embodiments, that the polymer material is mixed and infused with predetermined manner with the foaming agent
Enter molding die, includes so that the light guide plate of the bubble comprising being generated by the foaming agent is made：First time period to it is described at
The injection polymer material in pattern tool；Continue injection into the molding die for the polymeric material in second time period
The mixture that material and the foaming agent are uniformly mixed to get；And continue to inject institute into the molding die in the third period
State polymer material.
The time span of the first time and third time are equal in one of the embodiments,.
It is described in one of the embodiments, that the polymer material is mixed and infused with predetermined manner with the foaming agent
Enter molding die, includes so that the light guide plate of the bubble comprising being generated by the foaming agent is made：The polymer material is injected
First submodule tool, the first daughter board is made；The mixture that the polymer material and the foaming agent are uniformly mixed to get is infused
Enter the second submodule tool, the second daughter board comprising bubble that is equally distributed and being generated by the foaming agent is made；It will be described poly-
Object material injection third submodule tool is closed, third daughter board is made；And by first daughter board, second daughter board and described
The alignment of three daughter boards and in a thickness direction superposition synthesis are to obtain the light guide plate；Wherein, first daughter board, second son
Plate is identical and of same size with the length of the third daughter board, and second daughter board is located at first daughter board and third
Between plate.
The thickness of first daughter board and the second daughter board is different in one of the embodiments,.
It is described in one of the embodiments, that the polymer material is mixed and infused with predetermined manner with the foaming agent
Enter molding die, includes so that the light guide plate of the bubble comprising being generated by the foaming agent is made：The polymer material is injected
First submodule tool, the first daughter board is made；The mixture that the polymer material and the foaming agent are uniformly mixed to get is infused
Enter the second submodule tool, the second daughter board comprising bubble that is equally distributed and being generated by the foaming agent is made；It will be described poly-
Object material injection third submodule tool is closed, third daughter board is made；The polymer material is uniformly mixed with the foaming agent
The mixture arrived injects the 4th submodule tool, the 4th son comprising bubble that is equally distributed and being generated by the foaming agent is made
Plate；The polymer material is injected into the 5th submodule tool, the 5th daughter board is made；And by first daughter board, described second
Daughter board, the third daughter board, the 4th daughter board and the 5th daughter board alignment and in a thickness direction superposition synthesis are to obtain
The light guide plate；Wherein, first daughter board, second daughter board, the third daughter board, the 4th daughter board and the described 5th
The length of daughter board is identical and of same size, first daughter board, second daughter board, the third daughter board, the 4th daughter board
Successively connect with the 5th daughter board.
It is described in one of the embodiments, that the polymer material is mixed and infused with predetermined manner with the foaming agent
Enter molding die, includes so that the light guide plate of the bubble comprising being generated by the foaming agent is made：First time period to it is described at
The mixture that the polymer material and the foaming agent are mixed to get with the first ratio uniform is injected in pattern tool；At second
Between section continue to inject the polymer material into the molding die and the foaming agent is mixed to get with the second ratio uniform
Mixture；And the third period continue to inject into the molding die polymer material and the foaming agent with
The mixture that third ratio uniform is mixed to get；Wherein, second ratio is less than first ratio and the third ratio.
A kind of production method for display device that the embodiment of the present invention also provides, including：Light guide plate, the light guide plate are provided
The production method of light guide plate described in previous embodiment any one is made and the light guide plate includes：Ontology, in the ontology
It is formed with bubble；Incidence surface, the incidence surface are located at the side of the ontology；And light-emitting surface, the light-emitting surface are located at described
The top of ontology；Backboard is provided, and the backboard is mounted on the bottom of the ontology far from the side at the top, the back
Plate face to the surface of the ontology be smooth surface by mirror surface treatment；Luminescence unit is provided, and the luminescence unit is adjacent
The nearly incidence surface setting；Optical diaphragm group is provided, the top is arranged in far from the bottom in the optical diaphragm group
Side.
The embodiment of the present invention can be subtracted by being formed with bubble in light guide plate in the case where not reducing light guide plate
The weight of light light guide plate；In addition, the bubble in light guide plate can destroy the total reflection of light in light guide plate, generate atomization goes out light
Effect finally realizes mitigation while guaranteeing light guide plate so that more light are projected from the light-emitting surface of light guide plate
The weight of light guide plate and the technical effect for improving show uniformity.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes the embodiment of the present invention
A part, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, does not constitute improper limitations of the present invention.
In the accompanying drawings：
Fig. 1 is a kind of flow diagram of the production method for light guide plate that one embodiment of the invention provides；
Fig. 2 is a kind of process signal of the production method for display device that one embodiment of the invention provides；
Fig. 3 is using light guide plate and the display including the light guide plate obtained by method provided by one embodiment of the present invention
The schematic diagram of device；
Fig. 4 is using light guide plate and the display including the light guide plate obtained by method provided by one embodiment of the present invention
The schematic diagram of device；
Fig. 5 is using light guide plate and the display including the light guide plate obtained by method provided by one embodiment of the present invention
The schematic diagram of device；
Fig. 6 is using light guide plate and the display including the light guide plate obtained by method provided by one embodiment of the present invention
The schematic diagram of device；
Fig. 7 is using light guide plate and the display including the light guide plate obtained by method provided by one embodiment of the present invention
The schematic diagram of device.
Appended drawing reference：
100a- display device；
10a- light source module；11a- luminescence unit；12a- circuit board；20a- backboard；
30a- light guide plate；31a- ontology；311a- bubble；
32a- incidence surface；33a- light-emitting surface；34a- reflecting surface.
100b- display device；
10b- light source module；11b- luminescence unit；12b- circuit board；20b- backboard；
30b- light guide plate；31b- ontology；311b- bubble；
32b- incidence surface；33b- light-emitting surface；34b- reflecting surface.
100c- display device；
10c- light source module；11c- luminescence unit；12c- circuit board；20c- backboard；
30c- light guide plate；31c- ontology；311c- bubble；
32c- incidence surface；33c- light-emitting surface；34c- reflecting surface.
100d- display device；
10d- light source module；11d- luminescence unit；12d- circuit board；20d- backboard；
30d- light guide plate；31d- ontology；311d- bubble；
32d- incidence surface；33d- light-emitting surface；34d- reflecting surface.
100e- display device；
10e- light source module；11e- luminescence unit；12e- circuit board；20e- backboard；
30e- light guide plate；31e- ontology；311e- bubble；
32e- incidence surface；33e- light-emitting surface；34e- reflecting surface.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
The display device of the embodiment of the present invention can be liquid crystal display panel, OLED (Organic Light Emitting
Diode, Organic Light Emitting Diode) display device, QLED (Quantum Dot Light Emitting Diode, quantum dot hair
Optical diode) display device, curved-surface display device or other display devices.
As shown in Figure 1, the embodiment of the present invention provides a kind of production method of light guide plate, mainly include：
Step S11:Polymer material is provided；
Step S13:Foaming agent is provided；And
Step S15:The polymer material is mixed into simultaneously injection moulding mold with the foaming agent with predetermined manner, with system
Obtain the light guide plate of the bubble comprising being generated by the foaming agent.
Wherein, the polymer material is, for example, PMMA (Polymethylmethacrylate, poly-methyl methacrylate
Ester) or the polymer materials such as transparent PC (Polycarbonate, polycarbonate).The foaming agent is, for example, nitrogen or titanium dioxide
The foaming agents such as carbon.
In some embodiments, step S15 for example including：The polymer material is uniformly mixed simultaneously with the foaming agent
The molding die is injected, the light guide plate comprising bubble that is equally distributed and being generated by the foaming agent is made.
In further embodiments, step S15 for example including：Described in being injected in first time period into the molding die
Polymer material；Continue injection into the molding die in second time period the polymer material and the foaming agent is equal
The even mixture being mixed to get；And continue to inject the polymer material into the molding die in the third period.Tool
Body, the time span of the first time is for example equal to the time span of third time.
In some other embodiment, step S15 for example including：The polymer material is injected into the first submodule tool, with
The first daughter board is made；The mixture that the polymer material and the foaming agent are uniformly mixed to get injects the second submodule tool,
The second daughter board comprising bubble that is equally distributed and being generated by the foaming agent is made；By polymer material injection the
Three submodules tool, third daughter board is made；And by first daughter board, second daughter board and the third daughter board be aligned and
Superposition synthesis is on thickness direction to obtain the light guide plate；Wherein, first daughter board, second daughter board and third
The length of plate is identical and of same size, and second daughter board is between first daughter board and the third daughter board.Specifically,
The thickness of first daughter board and the thickness of the second daughter board are for example different.
In yet other embodiments, step S15 for example including：The polymer material is injected into the first submodule tool, with system
At the first daughter board；The mixture that the polymer material and the foaming agent are uniformly mixed to get injects the second submodule tool, with
The second daughter board comprising bubble that is equally distributed and being generated by the foaming agent is made；The polymer material is injected into third
Submodule tool, third daughter board is made；The mixture injection that the polymer material and the foaming agent are uniformly mixed to get the
Four submodules tool, the 4th daughter board comprising bubble that is equally distributed and being generated by the foaming agent is made；By the polymer
Material injects the 5th submodule tool, the 5th daughter board is made；And it is first daughter board, second daughter board, the third is sub
Plate, the 4th daughter board and the 5th daughter board alignment and in a thickness direction superposition synthesis are to obtain the light guide plate；Wherein,
First daughter board, second daughter board, the third daughter board, the 4th daughter board it is identical with the length of the 5th daughter board and
It is of same size, first daughter board, second daughter board, the third daughter board, the 4th daughter board and the 5th daughter board according to
It is secondary to connect.
The superposition synthesis is, for example, successively to connecing between the adjacent daughter board of the every two for being superimposed alignment in a thickness direction
Optical cement OCA (Optically Clear Adhesive) is used to bond for contacting surface or the modes such as heat welded are connected to obtain
State light guide plate.Herein it is noted that the embodiment of the present invention is without being limited thereto, as long as the light transmission rate that can have guaranteed and connection
The superposition synthesis mode of intensity is all in the scope of the present invention.
In other embodiments, step S15 for example including：Institute is injected into the molding die in first time period
State the mixture that polymer material and the foaming agent are mixed to get with the first ratio uniform；In second time period to the molding
Continue to inject the mixture that the polymer material and the foaming agent are mixed to get with the second ratio uniform in mold；And
It is mixed with third ratio uniform that the third period continues to inject into the molding die polymer material and the foaming agent
Close obtained mixture；Wherein, second ratio is less than first ratio and the third ratio.
As shown in Fig. 2, being a kind of production method of display device provided in an embodiment of the present invention, mainly include：
Step S21:Light guide plate, the production side of light guide plate light guide plate as described in aforementioned any one embodiment are provided
Method is made and the light guide plate includes：Ontology is formed with bubble in the ontology；Incidence surface, the incidence surface are located at described
The side of body；And light-emitting surface, the light-emitting surface are located at the top of the ontology；
Step S23:Backboard is provided, and the backboard is mounted on the bottom of the ontology far from the side at the top,
Surface of the backboard towards the ontology is the smooth surface by mirror surface treatment；
Step S25:Luminescence unit is provided, and the luminescence unit is arranged adjacent to the incidence surface；
Step S27:Optical diaphragm group is provided, one of the top far from the bottom is arranged in the optical diaphragm group
Side.
The production side using light guide plate provided by present invention is discussed in detail by taking attached drawing 2-7 as an example below
Light guide plate obtained by the production method of method and display device and display device.
As shown in figure 3, when step S15 includes：" polymer material is uniformly mixed with the foaming agent and injects institute
Molding die is stated, the light guide plate comprising bubble that is equally distributed and being generated by the foaming agent is made " when, obtained one
The example of one embodiment of the kind light guide plate 30a and display device 100a comprising light guide plate 30a.Display device 100a further includes
Light source module 10a and backboard 20a.
Light guide plate 30a includes ontology 31a, the light out positioned at the incidence surface 32a of the side ontology 31a, at the top of ontology 32a
Face 33a and positioned at the bottom ontology 31a and the reflecting surface 34a that is oppositely arranged with light-emitting surface 33a, and reflecting surface in one embodiment
34a is provided with multiple sites or is fitted with reflector plate.Incidence surface 32a can be only positioned at the side of ontology 31a, can also be symmetrical
It is distributed in the opposite sides of ontology 31a, it might even be possible to be on the side of the surrounding of ontology 31a.Light source module 10a includes neighbouring leads
The circuit board 12a of the luminescence unit 11a and support luminescence unit 11a of tabula rasa incidence surface 32a setting.Backboard 20a, which is set to, to be led
The bottom of tabula rasa 30a, backboard 20a are mirror surface treatment towards the surface of light guide plate 30a, and self-reflection face 34a is mapped to backboard 20a
On light be reflected on the light-emitting surface 33a of light guide plate 30a.Mirror surface treatment refers to that the surface is smooth, and light is incident on the surface
Mirror-reflection can occur greatly afterwards.
Bubble 311a is formed in the ontology 31a of light guide plate 30a, the setting of bubble 311a can not reduce light guide plate
In the case where 30a thickness, mitigate the weight of light guide plate 30a.The thickness of light guide plate 30a is constant, the big portion that luminescence unit 11a is issued
Light splitter can still inject light guide plate 30a, and bubble 311a is arranged in ontology 31a, will not greatly detract from light guide plate 30a
Structural strength.In addition, bubble 311a can destroy the total reflection of light in ontology 31a, the light-out effect of atomization is generated, so that
More light are uniformly projected from the light-emitting surface 33a at the top of light guide plate 30a.Use the display device 100a of light guide plate 30a
Weight be also effectively reduced.
It can have multiple equally distributed bubble 311a in ontology 31a.The diameter range of bubble 311a in ontology 31a
For 0.1mm to 2mm, the weight set that can specifically reduce according to the thickness and needs of light guide plate 30a.For example, in light guide plate 30a
With a thickness of 4mm when, the diameter of bubble 311a can be 0.5mm；When light guide plate 30a is with a thickness of 6mm, the diameter of bubble 311a can
To be 0.8mm；When light guide plate 30a thickness 9mm, the diameter of bubble 311a can be 1.5mm.
The space that bubble 311a is occupied in ontology 31a greatly influences the self weight of light guide plate 30a, when the reduced weight of needs
When measuring smaller, the total volume of bubble 311a can be smaller；When needing reduced weight larger, the total volume of bubble 311a can
With larger, but in order to guarantee that light guide plate 30a has certain intensity, the total volume of bubble 311a be should not be too large.In the present embodiment,
The ratio between the volume of bubble 311a and ontology 31a range is 1:9 to 4:6.For example, when needing small size loss of weight, bubble 311a and sheet
The ratio between volume of body 31a can be 2:8；When needing substantially loss of weight, the ratio between volume of bubble 311a and ontology 31a can be 3:
7。
As shown in figure 4, when step S15 includes：" polymeric material is injected into the molding die in first time period
Material；Continue injection into the molding die in second time period uniformly to mix the polymer material and the foaming agent
The mixture arrived；And continue to inject the polymer material into the molding die in the third period, when described first
Between time span for example equal to the time span of third time " when, a kind of obtained light guide plate 30b and include light guide plate
The example of one embodiment of the display device 100b of 30b.Display device 100b further includes light source module 10b and backboard 20b.
Light guide plate 30b includes ontology 31b, the light out positioned at the incidence surface 32b of the side ontology 31b, at the top of ontology 32b
Face 33b and positioned at the bottom ontology 31b and the reflecting surface 34b that is oppositely arranged with light-emitting surface 33b.Incidence surface 32b can be only positioned at this
The side of body 31b can also be symmetrically distributed in the opposite sides of ontology 31b, it might even be possible to be the side of the surrounding of ontology 31b
On.Light source module 10b includes the luminescence unit 11b and the support luminescence unit that the incidence surface 32b of neighbouring light guide plate 30b is arranged
The circuit board 12b of 11b.Backboard 20b is set to the bottom of light guide plate 30b, backboard 20b towards the surface of light guide plate 30b be mirror surface
Processing, the 34b light being mapped on backboard 20b in self-reflection face is reflected on the light-emitting surface 33b of light guide plate 30b.Mirror surface treatment
Refer to that the surface is smooth, light, which is incident on behind the surface, can occur greatly mirror-reflection.
Bubble 311b is formed in the ontology 31b of light guide plate 30b, the setting of bubble 311b can not reduce light guide plate
In the case where 30b thickness, mitigate the weight of light guide plate 30b.The thickness of light guide plate 30b is constant, the big portion that luminescence unit 11b is issued
Light splitter can still inject light guide plate 30b, and bubble 311b is arranged in ontology, will not greatly detract from light guide plate 30b's
Structural strength.In addition, bubble 311b can destroy the total reflection of light in ontology 31b, the light-out effect of atomization is generated, so that more
More light is uniformly projected from the light-emitting surface 33b at the top of light guide plate 30b.Use the display device 100b of light guide plate 30b
Weight is also effectively reduced.
It can have a bubble 311b in ontology 31b, i.e. light guide plate 30b forms hollow structure.Perpendicular to reflecting surface
On the direction of 34b or light-emitting surface 33b, the bubble 311b can approximate rounded or rectangle, be set to the center in ontology 31b
Place.For example, the length of light guide plate 30b is 400mm, width 300mm, if bubble 311b is rounded, which can
Think 50mm to 100mm, such as 80mm；If bubble 311b is in rectangle, the length of rectangle bubble 311b can be 80mm,
Width is 60mm.
The center line of bubble 311b can be centrally located between reflecting surface 34b and light-emitting surface 33b, can also be to reflecting surface
The biasing of the direction 34b.
Bubble with a thickness of 0.1mm to 3mm, the thickness of concrete foundation light guide plate 30b determines, and is set to reflecting surface 34b
Bubble 311b between light-emitting surface 33b, and should keeping at a distance for reflecting surface 34b and light-emitting surface 33b, so that its light guide plate
30b still has enough intensity.Light guide plate 30b with a thickness of 4mm when, bubble 311b with a thickness of 0.5mm to 2mm, such as
1mm。
As shown in figure 5, when step S15 includes：" polymer material is injected into the first submodule tool, the first son is made
Plate；The mixture that the polymer material and the foaming agent are uniformly mixed to get injects the second submodule tool, includes to be made
The second daughter board of bubble that is equally distributed and being generated by the foaming agent；Polymer material injection third submodule is had,
Third daughter board is made；And by the alignment of first daughter board, second daughter board and the third daughter board and in thickness direction
Upper superposition synthesis is to obtain the light guide plate；Wherein, the length of first daughter board, second daughter board and the third daughter board
Identical and of same size, second daughter board is between first daughter board and the third daughter board.First daughter board
When thickness is for example different with the thickness of the second daughter board ", a kind of obtained light guide plate 30c and the display dress comprising light guide plate 30c
Set the example of one embodiment of 100c.Display device 100c further includes light source module 10c, backboard 20c and optical diaphragm group.
Light guide plate 30c includes ontology 31c, the light out positioned at the incidence surface 32c of the side ontology 31c, at the top of ontology 32c
Face 33c and positioned at the bottom ontology 31c and the reflecting surface 34c that is oppositely arranged with light-emitting surface 33c.Incidence surface 32c can be only positioned at this
The side of body 31c can also be symmetrically distributed in the two sides of ontology 31c, it might even be possible to be on the side of the surrounding of ontology 31c.Light
Source module 10c includes the electricity of the luminescence unit 11c that the incidence surface 32c of neighbouring light guide plate 30c is arranged and support luminescence unit 11c
Road plate 12c, luminescence unit 11c is LED in one embodiment, and corresponding light source module 10c is LED light bar.Backboard 20c is set
It is placed in the bottom of light guide plate 30c, backboard 20c is mirror surface treatment towards the surface of light guide plate 30c, and self-reflection face 34c is mapped to
Light on backboard 20c is reflected on the light-emitting surface 33c of light guide plate 30c.Mirror surface treatment refers to that the surface is smooth, and light is incident on
Mirror-reflection can occur behind the surface greatly.In addition, optical diaphragm group (not indicating in Fig. 5) is located at the light out of light guide plate 30c
The top of face 33c, for example including optical diaphragms such as diffusion sheets.
Bubble 311c is formed in the ontology 31c of light guide plate 30c, the setting of bubble 311c can not reduce light guide plate
In the case where 30c thickness, mitigate the weight of light guide plate 30c.The thickness of light guide plate 30c is constant, the big portion that luminescence unit 11c is issued
Light splitter can still inject light guide plate 30c, and bubble 311c is arranged in ontology, will not greatly detract from light guide plate 30c's
Structural strength.In addition, bubble 311c can destroy the total reflection of light in ontology 31c, the light-out effect of atomization is generated, so that more
More light is uniformly projected from the light-emitting surface 33c at the top of light guide plate 30c.Use the display device 100c of light guide plate 30c
Weight is also effectively reduced.
On one layer between light-emitting surface 33c and reflecting surface 34c, multiple bubble 311c are located substantially at same bubble 311c
In plane, the plane is parallel with reflecting surface 34c and light-emitting surface 33c, and close to reflecting surface 34c far from light-emitting surface 33c.Bubble 311c
Be arranged close to reflecting surface 34c so that the light of ontology 31c inner total reflection scattered when close to reflecting surface 34c by bubble 311c and
It is projected from light-emitting surface 33c, improves the luminous flux on light-emitting surface 33c.
The diameter range of bubble 311c in ontology 31c is 0.3mm to 1.5mm, specifically can be according to the thickness of light guide plate 30c
Spend and need reduced weight set.For example, the diameter of bubble 311c can be when light guide plate 30c is with a thickness of 5mm
0.4mm；When light guide plate 30c is with a thickness of 6mm, the diameter of bubble 311c can be 1.0mm；When light guide plate 30c thickness 10mm, bubble
The diameter of 311c can be 1.3mm.
The space that bubble 311c is occupied in ontology 31c greatly influences the self weight of light guide plate 30c, when the reduced weight of needs
When measuring smaller, the total volume of bubble 311c can be smaller；When needing reduced weight larger, the total volume of bubble 311c can
With larger, but in order to guarantee that light guide plate 30c has certain intensity, the total volume of bubble 311c be should not be too large.In the present embodiment,
The ratio between the volume of bubble 311c and ontology 31c range is 1:9 to 3:7.For example, when needing small size loss of weight, bubble 311c and sheet
The ratio between volume of body 31c can be 1:9；When needing substantially loss of weight, the ratio between volume of bubble 311c and ontology 31c can be 2:
8。
As shown in fig. 6, when step S15 includes：" polymer material is injected into the first submodule tool, the first son is made
Plate；The mixture that the polymer material and the foaming agent are uniformly mixed to get injects the second submodule tool, includes to be made
The second daughter board of bubble that is equally distributed and being generated by the foaming agent；Polymer material injection third submodule is had,
Third daughter board is made；The mixture that the polymer material and the foaming agent are uniformly mixed to get injects the 4th submodule
Tool, the 4th daughter board comprising bubble that is equally distributed and being generated by the foaming agent is made；The polymer material is infused
Enter the 5th submodule tool, the 5th daughter board is made；And by first daughter board, second daughter board, the third daughter board, described
4th daughter board and the 5th daughter board alignment and in a thickness direction superposition synthesis are to obtain the light guide plate；Wherein, described
One daughter board, second daughter board, the third daughter board, the 4th daughter board be identical with the length of the 5th daughter board and width phase
Together, first daughter board, second daughter board, the third daughter board, the 4th daughter board and the 5th daughter board successively connect "
When, the example of one embodiment of a kind of obtained light guide plate 30d and the display device 100d comprising light guide plate 30d.Display
Device 100d further includes light source module 10d, backboard 20d and optical diaphragm group.
Light guide plate 30d includes ontology 31d, the light out positioned at the incidence surface 32d of the side ontology 31d, at the top of ontology 32d
Face 33d and positioned at the bottom ontology 31d and the reflecting surface 34d that is oppositely arranged with light-emitting surface 33d.Incidence surface 32d can be only positioned at this
The side of body 31d can also be symmetrically distributed in the two sides of ontology 31d, it might even be possible to be on the side of the surrounding of ontology 31d.Light
Source module 10d includes the electricity of the luminescence unit 11d that the incidence surface 32d of neighbouring light guide plate 30d is arranged and support luminescence unit 11d
Road plate 12d.Backboard 20d is set to the bottom of light guide plate 30d, backboard 20d towards the surface of light guide plate 30d be mirror surface treatment, with
The 34d light being mapped on backboard 20d in self-reflection face is reflected on the light-emitting surface 33d of light guide plate 30d.Mirror surface treatment refers to the table
Face is smooth, and light, which is incident on behind the surface, can occur greatly mirror-reflection.In addition, optical diaphragm group (does not indicate) position in Fig. 6
In the top of the light-emitting surface 33d of light guide plate 30d, for example including optical diaphragms such as diffusion sheets.
Bubble 311d is formed in the ontology 31d of light guide plate 30d, the setting of bubble 311d can not reduce light guide plate
In the case where 30d thickness, mitigate the weight of light guide plate 30d.The thickness of light guide plate 30d is constant, the big portion that luminescence unit 11d is issued
Light splitter can still inject light guide plate 30d, and bubble 311d is arranged in ontology, will not greatly detract from light guide plate 30d's
Structural strength.In addition, bubble 311d can destroy the total reflection of light in ontology 31d, the light-out effect of atomization is generated, so that more
More light is uniformly projected from the light-emitting surface 33d at the top of light guide plate 30d.Use the display device 100d of light guide plate 30d
Weight is also effectively reduced.
For bubble 311d in two layers between light-emitting surface 33d and reflecting surface 34d, multiple bubble 311d are located at two
In the plane being parallel to each other, two planes being parallel to each other are parallel with reflecting surface 34d and light-emitting surface 33d, and two be parallel to each other it is flat
The whole close reflecting surface 34d in face is far from light-emitting surface 33d.Bubble 311d is arranged close to reflecting surface 34d, so that being all-trans in ontology 31d
The light penetrated is scattered by bubble 311d when close to reflecting surface 34d and is projected from light-emitting surface 33d, improves the light on light-emitting surface 33d
Flux.
The diameter range of bubble 311d in ontology 31d is 0.1mm to 1.5mm, specifically can be according to the thickness of light guide plate 30d
Spend and need reduced weight set.For example, the diameter of bubble 311d can be when light guide plate 30d is with a thickness of 5mm
0.5mm；When light guide plate 30d is with a thickness of 6mm, the diameter of bubble 311d can be 1.0mm；When light guide plate 30d thickness 10mm, bubble
The diameter of 311d can be 1.2mm.
The space that bubble 311d is occupied in ontology 31d greatly influences the self weight of light guide plate 30d, when the reduced weight of needs
When measuring smaller, the total volume of bubble 311d can be smaller；When needing reduced weight larger, the total volume of bubble 311d can
With larger, but in order to guarantee that light guide plate 30d has certain intensity, the total volume of bubble 311d be should not be too large.In the present embodiment,
The ratio between the volume of bubble 311d and ontology 31d range is 1:9 to 4:6.For example, when needing small size loss of weight, bubble 311d and sheet
The ratio between volume of body 31d can be 1:9；When needing substantially loss of weight, the ratio between volume of bubble 311d and ontology 31d can be 2:
8。
As shown in fig. 7, when step S15 includes：" polymeric material is injected into the molding die in first time period
The mixture that material and the foaming agent are mixed to get with the first ratio uniform；Continue in second time period into the molding die
Inject the mixture that the polymer material and the foaming agent are mixed to get with the second ratio uniform；And in the third period
Continue to inject into the molding die polymer material and the foaming agent be mixed to get with third ratio uniform it is mixed
Close object；Wherein, second ratio is less than first ratio and the third ratio " when, a kind of obtained light guide plate 30e
With the example of one embodiment of the display device 100e comprising light guide plate 30e.Display device 100e further includes light source module
10e, backboard 20e and optical diaphragm group.
Light guide plate 30e includes ontology 31e, the light out positioned at the incidence surface 32e of the side ontology 31e, at the top of ontology 32e
Face 33e and positioned at the bottom ontology 31e and the reflecting surface 34e that is oppositely arranged with light-emitting surface 33e.Incidence surface 32e can be only positioned at this
The side of body 31e can also be symmetrically distributed in the two sides of ontology 31e, it might even be possible to be on the side of the surrounding of ontology 31e.Light
Source module 10e includes the electricity of the luminescence unit 11e that the incidence surface 32e of neighbouring light guide plate 30e is arranged and support luminescence unit 11e
Road plate 12e.Backboard 20e is set to the bottom of light guide plate 30e, backboard 20e towards the surface of light guide plate 30e be mirror surface treatment, with
The 34e light being mapped on backboard 20e in self-reflection face is reflected on the light-emitting surface 33e of light guide plate 30e.Mirror surface treatment refers to the table
Face is smooth, and light, which is incident on behind the surface, can occur greatly mirror-reflection.In addition, optical diaphragm group (does not indicate) position in Fig. 7
In the top of the light-emitting surface 33e of light guide plate 30e, for example including optical diaphragms such as diffusion sheets.
Bubble 311e is formed in the ontology 31e of light guide plate 30e, the setting of bubble 311e can not reduce light guide plate
In the case where 30e thickness, mitigate the weight of light guide plate 30e.The thickness of light guide plate 30e is constant, the big portion that luminescence unit 11e is issued
Light splitter can still inject light guide plate 30e, and bubble 311e is arranged in ontology, will not greatly detract from light guide plate 30e's
Structural strength.In addition, bubble 311e can destroy the total reflection of light in ontology 31e, the light-out effect of atomization is generated, so that more
More light is uniformly projected from the light-emitting surface 33e at the top of light guide plate 30e.Use the display device 100e of light guide plate 30e
Weight is also effectively reduced.
Ontology 31e includes central area and the peripheral region around central area, the especially thickness gauge in light guide plate 30e
It is very little smaller, when the bubble 311e quantity on ontology 31e can significantly reduce the intensity of light guide plate 30e, the bubble of peripheral region
311e can make central area have higher intensity than peripheral region than the bubble 311e more crypto set of central area.
The diameter range of bubble 311e in ontology 31e is 0.1mm to 1.5mm, specifically can be according to the thickness of light guide plate 30e
Spend and need reduced weight set.For example, the diameter of bubble 311e can be when light guide plate 30e is with a thickness of 5mm
0.5mm；When light guide plate 30e is with a thickness of 6mm, the diameter of bubble 311e can be 1.0mm；When light guide plate 30e thickness 10mm, bubble
The diameter of 311e can be 1.2mm.
The space that bubble 311e is occupied in ontology 31e greatly influences the self weight of light guide plate 30e, when the reduced weight of needs
When measuring smaller, the total volume of bubble 311e can be smaller；When needing reduced weight larger, the total volume of bubble 311e can
With larger, but in order to guarantee that light guide plate 30e has certain intensity, the total volume of bubble 311e be should not be too large.In the present embodiment,
The ratio between the volume of bubble 311e and ontology 31e range is 1:9 to 4:6.Specifically, the bubble volume accounting of central area can be
1:9, the bubble volume accounting of peripheral region can be 3:7.For example, when needing small size loss of weight, the bubble volume of central area
Accounting can be 1:9, the bubble volume accounting of peripheral region can be 2:8；When needing substantially loss of weight, the bubble of central area
Volume accounting can be 2:8, the bubble volume accounting of peripheral region can be 3:7.
Bubble 311e is located in ontology 31e, and bubble 311e and incidence surface 32e keep spacing, and spacing dimension is 2 to 10mm,
Such as 5mm.
In the embodiment of the present invention, due to being formed with bubble 311e in the ontology 31e of light guide plate 30e obtained, not
In the case where reducing light guide plate 30e thickness and light guide plate 30e intensity not being greatly lowered, the weight of light guide plate 30e is alleviated.Make
The display device 100e with light guide plate 30e obtained also more lightness.And bubble 311e can be used as scattering knot
Structure is scattered light.
Finally it is worth mentioning that the display device 100a-100e in previous embodiment is in addition to including light source die above-mentioned
It can also include this field except block 10a-10e, backboard 20a-20e, edge-type light guide plate 30a-30e even optical diaphragm group
Structure known to technical staff such as glue frame, front frame, panel etc..
In several embodiments provided herein, it should be understood that disclosed system, device and/or method, it can
To realize by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit/
The division of module, only a kind of logical function partition, there may be another division manner in actual implementation, such as multichannel unit
Or module can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, institute
Display or the mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, device or unit
Indirect coupling or communication connection can be electrical property, mechanical or other forms.
The units/modules as illustrated by the separation member may or may not be physically separated, as
The component that units/modules are shown may or may not be physical unit, it can and it is in one place, or can also be with
It is distributed on multi-channel network unit.Some or all of units/modules therein can be selected to realize according to the actual needs
The purpose of this embodiment scheme.
In addition, each functional unit/module in each embodiment of the present invention can integrate in a processing unit/module
In, it is also possible to each unit/module and physically exists alone, one can also be integrated in two or more units/modules
In units/modules.Above-mentioned integrated units/modules both can take the form of hardware realization, can also add software using hardware
Functional unit/module form is realized.
The above-mentioned integrated units/modules realized in the form of SFU software functional unit/module, can store and calculate at one
In machine read/write memory medium.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions use so that
The one or more processors of one computer equipment (can be personal computer, server or the network equipment etc.) execute
The part steps of each embodiment the method for the present invention.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only storage
Device (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic
The various media that can store program code such as dish or CD.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that：It still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of production method of light guide plate, which is characterized in that including：
Polymer material is provided；
Foaming agent is provided；And
The polymer material is mixed into simultaneously injection moulding mold with the foaming agent with predetermined manner, to be made comprising by described
The light guide plate for the bubble that foaming agent generates.
2. the production method of light guide plate as described in claim 1, which is characterized in that the polymer material is polymethyl
Sour methyl esters or polycarbonate.
3. the production method of light guide plate as described in claim 1, which is characterized in that it is described by the polymer material with it is described
Foaming agent is with predetermined manner mixing and injection moulding mold, the light guide plate packet of the bubble comprising being generated by the foaming agent is made
It includes：
The polymer material is uniformly mixed to the foaming agent and is injected the molding die, to be made comprising being uniformly distributed
And the light guide plate of bubble that is generated by the foaming agent.
4. the production method of light guide plate as described in claim 1, which is characterized in that it is described by the polymer material with it is described
Foaming agent is with predetermined manner mixing and injection moulding mold, the light guide plate packet of the bubble comprising being generated by the foaming agent is made
It includes：
The polymer material is injected into the molding die in first time period；
Continue injection into the molding die in second time period uniformly to mix the polymer material and the foaming agent
Obtained mixture；And
Continue to inject the polymer material into the molding die in the third period.
5. the production method of light guide plate as claimed in claim 4, which is characterized in that the first time and third time when
Between equal length.
6. the production method of light guide plate as described in claim 1, which is characterized in that it is described by the polymer material with it is described
Foaming agent is with predetermined manner mixing and injection moulding mold, the light guide plate packet of the bubble comprising being generated by the foaming agent is made
It includes：
The polymer material is injected into the first submodule tool, the first daughter board is made；
The mixture that the polymer material and the foaming agent are uniformly mixed to get injects the second submodule tool, includes to be made
The second daughter board of bubble that is equally distributed and being generated by the foaming agent；
By polymer material injection third submodule tool, third daughter board is made；And
First daughter board, second daughter board and the third daughter board are aligned and superposition is synthesized to obtain in a thickness direction
The light guide plate；
Wherein, first daughter board, second daughter board are identical and of same size with the length of the third daughter board, and described second
Daughter board is between first daughter board and the third daughter board.
7. the production method of light guide plate as claimed in claim 6, which is characterized in that the thickness of first daughter board and the second daughter board
Degree is different.
8. the production method of light guide plate as described in claim 1, which is characterized in that it is described by the polymer material with it is described
With predetermined manner mixing and injection moulding mold, the light guide plate with the obtained bubble comprising being generated by the foaming agent is foaming agent
Including：
The polymer material is injected into the first submodule tool, the first daughter board is made；
The mixture that the polymer material and the foaming agent are uniformly mixed to get injects the second submodule tool, includes to be made
The second daughter board of bubble that is equally distributed and being generated by the foaming agent；
By polymer material injection third submodule tool, third daughter board is made；
The mixture that the polymer material and the foaming agent are uniformly mixed to get injects the 4th submodule tool, includes to be made
The 4th daughter board of bubble that is equally distributed and being generated by the foaming agent；
The polymer material is injected into the 5th submodule tool, the 5th daughter board is made；And
By first daughter board, second daughter board, the third daughter board, the 4th daughter board and the 5th daughter board alignment and
Superposition synthesis is in a thickness direction to obtain the light guide plate；
Wherein, first daughter board, second daughter board, the third daughter board, the 4th daughter board and the 5th daughter board
Length is identical and of same size, first daughter board, second daughter board, the third daughter board, the 4th daughter board and described
5th daughter board successively connects.
9. the production method of light guide plate as described in claim 1, which is characterized in that it is described by the polymer material with it is described
With predetermined manner mixing and injection moulding mold, the light guide plate with the obtained bubble comprising being generated by the foaming agent is foaming agent
Including：
The polymer material and the foaming agent are injected into the molding die with the first ratio uniform in first time period
The mixture being mixed to get；
Continue to inject the polymer material and the foaming agent into the molding die in second time period with the second ratio
The mixture being uniformly mixed to get；And
Continue to inject the polymer material and the foaming agent into the molding die in the third period with third ratio
The mixture being uniformly mixed to get；
Wherein, second ratio is less than first ratio and the third ratio.
10. a kind of production method of display device, which is characterized in that including：
Light guide plate is provided, the production method of light guide plate light guide plate described in claim 1 to 9 any one is made and institute
Stating light guide plate includes：Ontology is formed with bubble in the ontology；Incidence surface, the incidence surface are located at the side of the ontology；With
And light-emitting surface, the light-emitting surface are located at the top of the ontology；
Backboard is provided, and the backboard is mounted on the bottom of the ontology far from the side at the top, the backboard towards
The surface of the ontology is the smooth surface by mirror surface treatment；
Luminescence unit is provided, and the luminescence unit is arranged adjacent to the incidence surface；
Optical diaphragm group is provided, side of the top far from the bottom is arranged in the optical diaphragm group.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810786444.0A CN108873152B (en) | 2018-07-17 | 2018-07-17 | Manufacturing method of light guide plate and manufacturing method of display device |
| PCT/CN2019/082295 WO2020015401A1 (en) | 2018-07-17 | 2019-04-11 | Manufacturing method for light guide plate and manufacturing method for display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810786444.0A CN108873152B (en) | 2018-07-17 | 2018-07-17 | Manufacturing method of light guide plate and manufacturing method of display device |
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| CN108873152B CN108873152B (en) | 2021-04-27 |
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| WO (1) | WO2020015401A1 (en) |
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| WO2020015329A1 (en) * | 2018-07-17 | 2020-01-23 | 惠科股份有限公司 | Light guide plate and display device |
| WO2020015401A1 (en) * | 2018-07-17 | 2020-01-23 | 惠科股份有限公司 | Manufacturing method for light guide plate and manufacturing method for display device |
| WO2020015399A1 (en) * | 2018-07-17 | 2020-01-23 | 惠科股份有限公司 | Light guide plate and display device |
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Also Published As
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| CN108873152B (en) | 2021-04-27 |
| WO2020015401A1 (en) | 2020-01-23 |
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