CN115236791B - Light guide glass, composite light guide glass, preparation method of composite light guide glass and light guide glass device - Google Patents
Light guide glass, composite light guide glass, preparation method of composite light guide glass and light guide glass device Download PDFInfo
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- CN115236791B CN115236791B CN202210891003.3A CN202210891003A CN115236791B CN 115236791 B CN115236791 B CN 115236791B CN 202210891003 A CN202210891003 A CN 202210891003A CN 115236791 B CN115236791 B CN 115236791B
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- 239000011521 glass Substances 0.000 title claims abstract description 174
- 239000002131 composite material Substances 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title abstract description 5
- 239000000758 substrate Substances 0.000 claims abstract description 51
- 238000002834 transmittance Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 20
- 239000010410 layer Substances 0.000 claims description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 239000012790 adhesive layer Substances 0.000 claims description 12
- 238000010147 laser engraving Methods 0.000 claims description 10
- 239000004417 polycarbonate Substances 0.000 claims description 6
- 239000012994 photoredox catalyst Substances 0.000 claims description 5
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 5
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 230000001788 irregular Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000013329 compounding Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 2
- 230000000007 visual effect Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 description 22
- 239000005038 ethylene vinyl acetate Substances 0.000 description 5
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 5
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
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- 230000001795 light effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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- 238000003672 processing method Methods 0.000 description 1
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/362—Laser etching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/40—Removing material taking account of the properties of the material involved
- B23K26/402—Removing material taking account of the properties of the material involved involving non-metallic material, e.g. isolators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
- B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
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- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention belongs to the technical field of light guide materials and discloses light guide glass, composite light guide glass, a preparation method thereof and a light guide glass device, wherein the light guide glass comprises a glass substrate, the light transmittance of the glass substrate is 90% -98%, the glass substrate is provided with a light emitting surface and a backlight surface opposite to the light emitting surface, the backlight surface of the glass substrate is provided with a plurality of light guide points, the size of the light guide points is 0.02-2.0 mu m, and the distance between the light guide points is 0.3-1.5 mm; wherein, a plurality of light guide points form a target graph. According to the light guide glass provided by the invention, the glass substrate with the light transmittance of 90% -98% is adopted as the light guide plate, the size of the light guide points is set to be 0.02-2.0 mu m, and the distance between the light guide points is set to be 0.3-1.5 mm, so that the purpose of improving the visual effect of a target pattern is achieved.
Description
Technical Field
The invention belongs to the technical field of light guide materials, and particularly relates to light guide glass, composite light guide glass, a preparation method thereof and a light guide glass device.
Background
The mature light guide plate in the market is mainly used in various household decorative lamps, guide lamps, ultrathin advertising lamp boxes, backlight sources of liquid crystal displays, X-ray film viewers for medical industry, planar lamp decoration illumination, light effect application of light engineering, luminous sign plates and other related fields.
The light guide plate has the function of converting the side light source into a surface light source and uniformly emitting light. The principle structure is that light reflecting dots are printed or laser engraved on transparent acrylic or PC plates according to different sizes, areas and sharpness, and the light is uniformly diffused by utilizing the light reflecting dots printed or engraved on the surface of the light guide plate, so that the line light source illumination is converted into a surface light source illumination mode, namely, the light is guided to the direction required by a designer. However, the existing light guide plate uses acrylic or PC as a base material, and the base material has limitations in terms of light refractive index and light transmittance, so that the concave-convex points of the light reflecting dots are obvious, especially under the condition of lighting, and the visual effect of the final target pattern is poor.
Disclosure of Invention
Aiming at the defects or shortcomings in the prior art, the invention provides light guide glass, composite light guide glass, a preparation method thereof and a light guide glass device, and aims to solve the technical problem that the target pattern of the traditional light guide plate is poor in visual effect.
In order to achieve the above object, the present invention provides a light guide glass, wherein the light guide glass comprises a glass substrate, the light transmittance of the glass substrate is 90% -98%, the glass substrate has a light emitting surface and a backlight surface opposite to the light emitting surface, the backlight surface of the glass substrate is provided with a plurality of light guide points, the size of the light guide points is 0.02-2.0 μm, and the distance between the light guide points is 0.3 mm-1.5 mm; wherein, a plurality of light guide points form a target graph.
In the embodiment of the invention, the size of the light guide points is 0.1-1.0 mu m, and the distance between the light guide points is 0.5-1.0 mm.
In the embodiment of the invention, the light transmittance of the glass substrate is 92-96%.
In the embodiment of the invention, the shape of the light guide point is any one or a combination of at least two of a circle, an ellipse, a regular polygon and an irregular polygon.
In the embodiment of the invention, the shape of the light guide point is circular, and the diameter of the light guide point is 0.3-1.3 mu m.
In the embodiment of the invention, the thickness of the glass substrate is 1.5-5 mm.
In the embodiment of the invention, the light guide point is formed on the backlight surface of the glass substrate by adopting a laser engraving method.
In the embodiment of the invention, the laser power is 10-40W, the laser frequency is 200-800 KHZ, and the laser speed is 800-1500 mm/s.
In order to achieve the above object, the present invention further provides a composite light guide glass, wherein the composite light guide glass includes the light guide glass described above, the composite light guide glass further includes a composite reinforcing layer and an adhesive layer, the adhesive layer adheres the light guide glass and the composite reinforcing layer together, the composite light guide glass can be bent into a curved surface structure under a specific process, and a target pattern of the composite light guide glass is not distorted.
In embodiments of the present invention, the adhesive layer is formed from an EVA film or a PVB film.
In the embodiment of the invention, the material of the composite reinforcing layer is glass, PC or PMMA.
In order to achieve the above object, the present invention further provides a method for preparing a composite light guide glass, wherein the method for preparing the composite light guide glass comprises:
Providing a glass substrate, wherein the glass substrate is provided with a light emitting surface and a backlight surface opposite to the light emitting surface;
Forming a plurality of light guide points on the backlight surface of the glass substrate by adopting a laser engraving method, wherein the size of the light guide points is 0.02-2.0 mu m, and the distance between the light guide points is 0.3-1.5 mm, and the plurality of light guide points form a target pattern;
And compounding the composite reinforcing layer on the backlight surface of the glass substrate through the adhesive layer to obtain the planar composite light guide glass.
In the embodiment of the invention, after the planar composite light guide glass is obtained, the planar composite light guide glass is heated to 580-650 ℃, and the temperature is kept for 5-30min, so that the composite light guide glass with a curved surface structure is obtained.
In order to achieve the above object, the present invention further provides a light guiding glass device, where the light guiding glass device includes a light source and the light guiding glass or the composite light guiding glass described above, and the light source is disposed on a side surface of the light guiding glass or the composite light guiding glass.
Through the technical scheme, the light guide glass provided by the embodiment of the invention has the following beneficial effects:
The light transmittance of the glass substrate is 90% -98%, the light transmittance effect is good, the brightness of the target pattern and the hiding effect of the light guide points can be improved, meanwhile, the size of the light guide points is set to be 0.02-2.0 mu m, the distance between the light guide points is set to be 0.3-1.5 mm, the fineness of the target pattern can be improved, and the hiding effect of the light guide points can be guaranteed. When no side light source exists or human eyes observe the light barrier from one side of the light emitting surface under normal natural light conditions, the light guide points on the light guide glass are difficult to observe due to the hiding effect of the light guide points, so that the light guide glass is like common glass, when the light guide glass is irradiated by the side light source, the light guide points emit light to form a target pattern, the concave and convex of the light guide points are not obvious due to the hiding effect, and the brightness and the fineness of the target pattern are greatly improved due to the size, the density and the light transmittance of the light guide points, so that the visual effect of the target pattern is improved. In summary, the light guide glass provided by the invention adopts the glass substrate with the light transmittance of 90% -98% as the light guide plate, and simultaneously the size of the light guide points is set to be 0.02-2.0 mu m, and the distance between the light guide points is set to be 0.3-1.5 mm, so that the purpose of improving the visual effect of a target graph is achieved.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate the invention and together with the description serve to explain, without limitation, the invention. In the drawings:
FIG. 1 is a schematic view of a light guide glass according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a composite light guide glass according to an embodiment of the present invention;
FIG. 3 is a microscopic view of a photosite formed by laser engraving under parameters one to six;
FIG. 4 is a flow chart of a method of making a composite light guide glass.
Description of the reference numerals
1. Light guide glass 11 glass substrate
111. Light-emitting surface 112 backlight surface
12. Light guide point 2 adhesive layer
3. Composite reinforcing layer 4 light source
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present invention.
The duct fixing apparatus of the present invention is described below with reference to the accompanying drawings.
The invention provides a light guide glass 1, wherein, as shown in figure 1, the light guide glass 1 comprises a glass substrate 11, the light transmittance of the glass substrate 11 is 90% -98%, the glass substrate 11 is provided with a light emitting surface 111 and a backlight surface 112 opposite to the light emitting surface 111, the backlight surface 112 of the glass substrate 11 is provided with a plurality of light guide points 12, the size of the light guide points 12 is 0.02-2.0 mu m, and the distance between the light guide points 12 is 0.3-1.5 mm; wherein a number of light guide points 12 constitute a target pattern.
Since the light transmittance of the glass substrate 11 is 90% -98%, the light transmittance effect is good, the brightness of the target pattern and the hiding effect of the light guide points 12 can be increased, meanwhile, the size of the light guide points 12 is set to be 0.02-2.0 μm, the distance between the light guide points 12 is set to be 0.3-1.5 mm, the fineness of the target pattern can be increased, and the hiding effect of the light guide points 12 can be ensured. Referring to fig. 1, when there is no side light source 4, or a human eye observes the light guide point 12 from one side of the light exit surface 111 under the condition of normal natural light, the light guide point 12 on the light guide glass 1 is difficult to observe due to the hiding effect of the light guide point 12, so that the light guide glass 1 is as common glass, when the light guide glass 1 is irradiated by the side light source 4, the light guide point 12 emits light to form a target pattern, the concave-convex effect of the light guide point 12 is not obvious due to the hiding effect, and the brightness and the fineness of the target pattern are greatly improved due to the size, the density and the light transmittance of the light guide point 12, so that the visual effect of the target pattern is increased. In summary, the light guide glass 1 provided by the invention adopts the glass substrate 11 with the light transmittance of 90% -98% as the light guide plate, and simultaneously the size of the light guide points 12 is set to be 0.02-2.0 μm, and the distance between the light guide points 12 is set to be 0.3-1.5 mm, so that the purpose of improving the visual effect of a target graph is achieved.
It should be noted that, when the light transmittance is less than 90%, the brightness of the target pattern displayed by the light guide point 12 is low, and the visual effect is poor; the light transmittance of the glass substrate 11 is set to be between 90% and 98%. Meanwhile, considering the influence of the size and the spacing of the light guide points 12 on the hiding effect, the size of the light guide points 12 is set between 0.02 and 2.0 mu m, and the distance between the light guide points 12 is set between 0.3 and 1.5 mm; if the size of the light guide point 12 is too small, the light cannot be guided out, and if the size is too large, the hiding effect becomes poor; similarly, if the pitch between the light guide points 12 is too small, the hiding effect becomes poor, and if the pitch is too large, the resolution of the target pattern at the time of turning on the lamp becomes too low, and the visual effect becomes poor.
In the embodiment of the present invention, the size of the light guide points 12 is preferably 0.1 to 1.0 μm, and the distance between the light guide points 12 is preferably 0.5mm to 1.0mm. Namely, the size of the light guide points 12 is set within the range of 0.1-1.0 mu m, the distance between the light guide points 12 is set within the range of 0.5-1.0 mm, and the fineness of the target pattern and the hiding effect of the light guide points 12 can be ensured to be in a good state.
In the embodiment of the present invention, the transmittance of the glass substrate 11 is preferably 92% to 96%. That is, the light transmittance of the glass substrate 11 is set to 92% to 96%, so that both the brightness of the target pattern and the hiding effect of the light guide point 12 can be in a good state.
In the embodiment of the present invention, the shape of the light guide point 12 may be any one or a combination of at least two of a circle, an ellipse, a regular polygon, and an irregular polygon. The shape of the light guide point 12 affects the visual effect of the target pattern and the hiding effect of the light guide point 12, so that the shape of the light guide point 12 can be adjusted according to different usage scenes of the light guide glass 1 to match the current usage scene.
In the embodiment of the present invention, the shape of the light guide point 12 is preferably a circle, and the diameter of the light guide point 12 is 0.3 to 1.3 μm. The circular light guide point 12 is simple to process, low in processing cost and capable of adapting to most of use scenes, and when the circular light guide point 12 is used, the display effect of the light guide point 12 is better when the size of the light guide point 12 is between 0.3 and 1.3 mu m.
In the embodiment of the present invention, the thickness of the glass substrate 11 is preferably 1.5 to 5mm. Considering that the glass substrate 11 is too thick, on the premise of ensuring the light transmittance, the use of glass with higher grade as the glass substrate 11 inevitably leads to the increase of production cost, while the glass substrate 11 is too thin, and the hiding effect of the light guide points 12 and the strength of the light guide glass 1 are reduced, so that the light guide glass 1 is easy to damage, and therefore, the glass substrate 11 is preferably arranged at 1.5-5 mm.
In the embodiment of the invention, the light guide point 12 is engraved on the backlight surface 112 of the glass substrate 11 by using a laser engraving method. The laser engraving method is a common processing method in the field of light guide plates, has a mature process, can adapt to fine processing, and has high accuracy and low production cost.
In the embodiment of the invention, the laser power is 10-40W, the laser frequency is 200-800 KHZ, and the laser speed is 800-1500 mm/s. The laser power, the laser frequency and the laser speed play an important role in forming the light guide point 12 and affecting the internal structure of the glass, if the laser power, the laser frequency and the laser speed are higher, the deeper the recess depth of the light guide point 12 is, the glass substrate 11 is easy to crack, and the larger the deviation value between the target size and the actual size of the light guide point 12 is. The target pattern formed by the light guide points 12 of the light guide glass 1 produced in the way can show the phenomenon of uneven light under the irradiation of the side light source 4, the concave-convex of the light guide points 12 is obvious, the light guide glass can be seen by human eyes, and the display effect is poor. If the laser power and the laser frequency are too low, the concave depth of the light guide point 12 is too shallow, so that the light guide glass 1 produced by the method has low light output of a target pattern formed by the light guide point 12 under the irradiation of the side light source 4, and has poor visual effect. Specifically, as shown in fig. 3, a to F in fig. 3 are microscopic views of the light guide points 12 formed by the laser engraving method under different parameters, respectively; wherein,
Parameter one: the laser power is 20W, the laser frequency is 400KHZ, and the laser speed is 1000 mm/s;
and (2) parameters II: the laser power is 30W, the laser frequency is 600KHZ, and the laser speed is 1200 mm/s;
and (3) parameters III: the laser power is 40W, the laser frequency is 800KHZ, and the laser speed is 1500 mm/s;
Parameter four: the laser power is 20W, the laser frequency is 400KHZ, and the laser speed is 600 mm/s;
Parameter five: the laser power is 20W, the laser frequency is 1000KHZ, and the laser speed is 1000 mm/s;
Parameter six: the laser power is 50W, the laser frequency is 400KHZ, and the laser speed is 1000 mm/s;
Wherein the shape of the target light guide point 12 of the laser engraving is a circle with a diameter of 0.04 μm.
A-F are microscopic images of actual light guide points formed under the conditions of parameters one to six respectively.
As shown in FIG. 3A, the light guide points 12 formed under the condition of the parameter one have diameters of 0.055/0.055/0.051/0.053 μm, respectively; as shown in FIG. 3B, the diameter of the photosites 12 formed under the condition of the second parameter is 0.056/0.058/0.056/0.055 μm, respectively; as shown in FIG. 3C, the diameter of the photosites 12 formed under the condition of parameter three is 0.059/0.059/0.056/0.055 μm, respectively; it can be seen that the light guide point 12 formed under the conditions of the parameters one to three is approximately circular in shape, and the deviation of the actual diameter from the target diameter is small.
As shown in FIG. 3D, the diameter of the photosites 12 formed under the condition of parameter four is 0.069/0.068/0.079/0.074 μm, respectively; as shown in FIG. 3E, the diameter of the photosites 12 formed under the condition of parameter five is 0.079/0.092/0.074/0.078 μm, respectively; as shown in F in FIG. 3, the diameter of the photosites 12 formed under the condition of parameter six is 0.080/0.089/0.086/0.087 μm, respectively; from this, it is clear that the circles of the light guide points 12 formed under the D-F condition are irregular, and the actual diameter deviates greatly from the target diameter.
In addition, the edges of the light guide points 12 formed under the conditions of the parameters one to three are smoother, and the edges of the light guide points 12 formed under the conditions of the parameters four to six are more burrs, so that the hiding effect of the light guide points 12 formed under the conditions of the parameters one to three is better than that of the light guide points 12 formed under the conditions of the parameters four to six. In conclusion, the laser power is set in the range of 10-40W, the laser frequency is set in the range of 200-800 KHZ, the laser speed is set in the range of 800-1500 mm/s, the engraved light guide point 12 is more accurate in size and better in hiding effect.
As shown in fig. 2, to achieve the above objective, the present invention further provides a composite light guide glass, where the composite light guide glass includes the light guide glass 1 described above, and since the composite light guide glass adopts all the technical solutions of the above embodiments, the composite light guide glass at least has all the beneficial effects brought by the technical solutions of the above embodiments, which are not described in detail herein. The composite light guide glass further comprises a composite reinforcing layer 3 and an adhesive layer 2, wherein the adhesive layer 2 is used for adhering the light guide glass 1 and the composite reinforcing layer 3 together, the composite light guide glass can be bent into a curved surface structure under a specific process, and the target graph of the composite light guide glass is not distorted. The bonding layer can bond the light guide glass 1 and the composite reinforcing layer 3 together, and the composite reinforcing layer 3 can increase the strength and ductility of the light guide glass 1, so that the composite light guide glass is processed into a curved surface to avoid cracking.
In the embodiment of the present invention, the adhesive layer 2 is formed of an EVA (ETHYLENE VINYL ACETATE Copolymer, ethylene-vinyl acetate) film or a PVB (Polyvinyl Butyral ) film. The EVA material or PVB material has good ductility, not only can play a role in adhesion, but also can play a role in glass breakage prevention.
In the embodiment of the present invention, the material of the composite reinforcement layer 3 may be glass, PC (Polycarbonate) or PMMA (polymethyl methacrylate ). Glass, PC and PMMA are the comparatively common substrate in light guide plate field, acquire simply, and the cost is lower.
As shown in fig. 4, to achieve the above object, the present invention further provides a method for preparing a composite light guide glass, which can be used for producing the composite light guide glass, where the method for preparing the composite light guide glass includes:
S10: providing a glass substrate 11, wherein the glass substrate 11 is provided with a light emergent surface 111 and a backlight surface 112 opposite to the light emergent surface 111;
s20: forming a plurality of light guide points 12 on a backlight surface 112 of a glass substrate 11 by adopting a laser engraving method, wherein the size of the light guide points 12 is 0.02-2.0 mu m, the distance between the light guide points 12 is 0.3-1.5 mm, and the plurality of light guide points 12 form a target pattern;
s30: the composite reinforcing layer 3 is laminated on the backlight surface 112 of the glass substrate 11 by the adhesive layer 2 to obtain a planar composite light guide glass.
As shown in fig. 4, in an embodiment of the present invention, after obtaining the planar composite light guide glass, the method further includes:
S40: and heating the planar composite light guide glass to 580-650 ℃, and preserving heat for 5-30min to obtain the composite light guide glass with the curved surface structure.
In order to achieve the above object, the present invention further provides a light guiding glass device, where the light guiding glass device includes a light source 4 and the light guiding glass 1 or the composite light guiding glass described above, the light source 4 is disposed on a side surface of the light guiding glass 1 or the composite light guiding glass and is capable of irradiating the light guiding glass 1 or the composite light guiding glass, so that a target pattern formed by the light guiding points 12 emits light, and the light source 4 may be an LED or the like or others. Meanwhile, the light guide glass device adopts all the technical schemes of the embodiment, so that the light guide glass device has at least all the beneficial effects brought by the technical schemes of the embodiment, and the details are not repeated here.
In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (13)
1. The light guide glass is characterized by comprising a glass substrate, wherein the light transmittance of the glass substrate is 90% -98%, the glass substrate is provided with a light emitting surface and a backlight surface opposite to the light emitting surface, the backlight surface of the glass substrate is provided with a plurality of light guide points, the size of each light guide point is 0.02-2.0 mu m, the distance between the light guide points is 0.3 mm-1.5 mm, and the thickness of the glass substrate is 1.5-5 mm; wherein, a plurality of light guide points form a target graph.
2. The light guide glass according to claim 1, wherein the size of the light guide points is 0.1-1.0 μm, and the distance between the light guide points is 0.5 mm-1.0 mm.
3. The light guide glass according to claim 1, wherein the glass substrate has a light transmittance of 92% to 96%.
4. The light guide glass according to claim 1, wherein the light guide point has a shape of any one or a combination of at least two of a circle, an ellipse, a regular polygon, and an irregular polygon.
5. The light guide glass according to claim 4, wherein the light guide point is circular in shape and has a diameter of 0.3 to 1.3 μm.
6. The light guide glass according to claim 1, wherein the light guide point is formed on the backlight surface of the glass substrate by a laser engraving method.
7. The light guide glass according to claim 6, wherein the laser power is 10 to 40w, the laser frequency is 200 to 800khz, and the laser speed is 800 to 1500 mm/sec.
8. The composite light guide glass is characterized by comprising the light guide glass as claimed in any one of claims 1-7, and further comprising a composite reinforcing layer and an adhesive layer, wherein the adhesive layer is used for bonding the light guide glass and the composite reinforcing layer together, the composite light guide glass can be bent into a curved surface structure under a specific process, and the target graph of the composite light guide glass is not distorted.
9. The composite light guide glass of claim 8, wherein the adhesive layer is formed from an EVA film or a PVB film.
10. The composite light guide glass of claim 8, wherein the material of the composite reinforcing layer is glass, PC or PMMA.
11. A method for producing a composite light guide glass, for producing a light guide glass according to any one of claims 1 to 7, comprising the steps of:
providing a glass substrate, wherein the glass substrate is provided with a light emitting surface and a backlight surface opposite to the light emitting surface;
forming a plurality of light guide points on the backlight surface of the glass substrate by adopting a laser engraving method, wherein the size of the light guide points is 0.02-2.0 mu m, the distance between the light guide points is 0.3-1.5 mm, and the light guide points form a target pattern;
And compounding the compound reinforcing layer on the backlight surface of the glass substrate through the bonding layer to obtain the planar compound light guide glass.
12. The method for preparing the composite light guide glass according to claim 11, further comprising heating the planar composite light guide glass to 580-650 ℃ and preserving heat for 5-30min after obtaining the planar composite light guide glass, thereby obtaining the composite light guide glass with a curved surface structure.
13. A light guide glass device comprising a light source and the light guide glass of any one of claims 1 to 7 or the composite light guide glass of any one of claims 8 to 10, the light source being disposed on a side of the light guide glass or the composite light guide glass.
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