CN209821421U - One-way light-emitting light guide plate - Google Patents
One-way light-emitting light guide plate Download PDFInfo
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- CN209821421U CN209821421U CN201920742839.0U CN201920742839U CN209821421U CN 209821421 U CN209821421 U CN 209821421U CN 201920742839 U CN201920742839 U CN 201920742839U CN 209821421 U CN209821421 U CN 209821421U
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Abstract
The utility model relates to an one-way light-emitting light guide plate, include: a light guide plate body; the light guide plate comprises a light guide plate body, a plurality of dots and a light source, wherein the plurality of dots are arranged on one side of the light guide plate body, each dot comprises a first ink layer and a second ink layer, the first ink layer is arranged on the light guide plate body and used for reflecting light, the second ink layer is arranged on the first ink layer, and the second ink layer is used for preventing the light from passing through; when light irradiates each mesh point, the first ink layer reflects the light and reflects the light out of the light guide plate body through the other side of the light guide plate body, and the second ink layer prevents the light from penetrating through the first ink layer and then penetrating out of the light guide plate body. The utility model discloses a first printing ink layer reflection light makes light jet out through the opposite side of light guide plate body to prevent light through second printing ink layer and jet out the light guide plate body through first printing ink layer, realize the function of one-way light-emitting, can effectual reduction LCD transparent display back highlight to the harmful effects of environment.
Description
Technical Field
The utility model relates to a light guide plate especially relates to an one-way light-emitting light guide plate.
Background
With the improvement of living standard of people, the requirements on display technology are more and more, wherein transparent display is more and more popular among consumers with unique visual perception, scientific and technological feeling, special purposes and the like.
In the transparent Display in the prior art, the transparent LCD is commonly used because the technology of the transparent Liquid Crystal Display (LCD) is mature, the performance is stable, and the price of the product is low.
However, since the transparent LCD itself cannot emit light, a backlight unit is required to provide a light source thereto.
The backlight module in the prior art generally includes a Light Emitting Diode (LED) and a Light guide plate, and converts the LED point Light source into a uniform surface Light source through a plurality of dots on the Light guide plate, so as to provide a Light source for the transparent LCD.
In the process of implementing the present invention, the inventor finds that the prior art has at least the following problems:
the mesh points on the light guide plate in the prior art are generally made of synthetic resin containing reflective particles or materials (generally PMMA, PC, glass and the like) of the light guide plate, and are manufactured by printing, mold forming, hot pressing, ink-jet printing and other methods, light can penetrate through the materials, the light extraction ratio of the front side and the back side of the light guide plate is basically about 1:1 after testing, and unidirectional light extraction cannot be realized.
Therefore, the light guide plate in the prior art has the characteristic of emitting light from two sides, when the light guide plate is used in cooperation with a transparent LCD, transparent display is realized on one side of the light guide plate, and meanwhile, redundant strong light rays are generated on the other side (back side) of the light guide plate, so that light pollution is caused, for example, when the light guide plate is used in environments such as public places, vehicles and the like, the light pollution is caused to the environment.
Therefore, there is an urgent need for a light guide plate that can provide a uniform light source for a transparent LCD and realize unidirectional light emission to solve the problem of light pollution caused by the light guide plate of the prior art.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem that exists among the above-mentioned prior art, the embodiment of the utility model provides an one-way light-emitting light guide plate. The specific technical scheme is as follows:
in a first aspect, a unidirectional light-emitting light guide plate is provided, wherein the unidirectional light-emitting light guide plate comprises:
a light guide plate body; and
the light guide plate comprises a light guide plate body, a plurality of dots and a plurality of light sources, wherein the plurality of dots are arranged on one side of the light guide plate body, each dot comprises a first ink layer and a second ink layer, the first ink layer is arranged on the light guide plate body and used for reflecting light, the second ink layer is arranged on the first ink layer, and the second ink layer is used for preventing light from transmitting;
when light irradiates each mesh point, the first ink layer reflects the light and reflects the light out of the light guide plate body through the other side of the light guide plate body, and the second ink layer prevents the light from penetrating through the first ink layer and then penetrating out of the light guide plate body.
In a first possible implementation manner of the first aspect, the material of the light guide plate body is glass, organic glass, or polycarbonate.
In a second possible implementation manner of the first aspect, the thickness of the light guide plate body is 1-10 mm.
In a third possible implementation manner of the first aspect, the thickness of each dot is greater than or equal to 30 micrometers.
In a fourth possible implementation manner of the first aspect, the main material of each dot includes titanium dioxide, aluminum powder, and an adhesive, where the titanium dioxide is located on the first ink layer, and the aluminum powder is located on the second ink layer.
With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the main material of the titanium dioxide is titanium dioxide, the main material of the aluminum powder is aluminum, and the binder is synthetic resin.
With reference to the fourth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the weight content of the titanium dioxide is 33%, the weight content of the aluminum powder is greater than or equal to 27%, and the balance is the weight content of the binder.
Compared with the prior art, the utility model the advantage that has have:
the utility model discloses an one-way light-emitting light guide plate makes light jet out through the opposite side of light guide plate body through first printing ink layer reflection light to prevent light through second printing ink layer and jet out the light guide plate body through first printing ink layer, realize the function of one-way light-emitting, can effectual reduction LCD transparent display back highlight to the harmful effects of environment.
And simultaneously, the utility model discloses a manufacturing method is simple and convenient to need not special equipment or technology, low cost can effectively improve the added value of product.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural view of a unidirectional light-emitting light guide plate according to an embodiment of the present invention.
Fig. 2 is a schematic view of the principle of the light reflected by the one-way light-emitting light guide plate according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a window of a vehicle or a building to which the one-way light-emitting light guide plate according to the second embodiment of the present invention is applied.
Fig. 4 is a schematic structural diagram of a method for manufacturing a unidirectional light-emitting light guide plate according to three embodiments of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
In an embodiment of the present invention, please refer to fig. 1, which shows a schematic structural diagram of an unidirectional light-emitting light guide plate 1 according to an embodiment of the present invention. The unidirectional light-emitting light guide plate 1 comprises a light guide plate body 2 and a plurality of mesh points 3, wherein:
the light guide plate body 2 is mainly used for converting an LED point light source into a uniform surface light source and providing a light source for the transparent LCD; there is no particular requirement for the selection of the structure of the light guide plate body 2 in the present embodiment, and it is sufficient to refer to the conventional selection of those skilled in the art.
In a preferred embodiment, the light guide plate body 2 is made of glass, polymethyl methacrylate (PMMA) or Polycarbonate (PC), but not limited thereto. In another preferred embodiment, the thickness of the light guide plate body 2 is 1-10 millimeters (mm), for example, 1mm, 3mm, 5mm, 7mm or 10mm, but not limited thereto.
The dots 3 are disposed on one side of the light guide plate body 2, and preferably, the dots 3 are disposed on the outer side of the light guide plate body 2, but not limited thereto. The main material of each dot 3 disclosed in this embodiment is an oil film formed by mixing titanium dioxide, aluminum powder and an adhesive, and the adhesive is preferably a synthetic resin, but not limited thereto. The embodiment further discloses that the weight content of the titanium dioxide is 33%, the weight content of the aluminum powder is greater than or equal to 27%, and the balance is the weight content of the binder, but not limited thereto.
Referring to fig. 1 again, each dot 3 includes a first ink layer 31 and a second ink layer 32, the first ink layer 31 is disposed on the light guide plate body 2, the first ink layer 31 is used for reflecting light, the titanium white disclosed in this embodiment is disposed on the first ink layer 31, and the main material of the titanium white is titanium dioxide (TiO)2) Due to titanium dioxide (TiO)2) Has a refractive index of 2.72, greater than 1.9 (typically a refractive index of 1.9 to have good retro-reflective effect), and therefore contains TiO2The ink (first ink layer 31) is a good light-reflecting substance, and can play a role of reflecting light, but not limited to this, and those skilled in the art can also select other suitable light-reflecting substances to be added into the first ink layer 31 according to the teachings of the embodiment.
The second ink layer 32 is disposed on the first ink layer 31, the second ink layer 32 is used for preventing light from passing through, the aluminum powder disclosed in this embodiment is disposed on the second ink layer 32, the aluminum powder is made of aluminum (Al) with light color and high metallic luster, and its surface is smooth and clean, and can reflect 60% -90% of visible light, ultraviolet light and infrared light, so that the surface of the ink (the first ink layer 31) containing the aluminum powder is silvery white and bright, and has good light-shielding property, and can play a role in shielding light, and prevent light from irradiating one side (outside) of the light guide plate body 2 through the first ink layer 31, but not limited thereto.
In a preferred embodiment, the thickness of each dot 3 is greater than or equal to 30 μm, and each dot 3 (the first ink layer 31) within the thickness range can effectively reflect light and the second ink layer 32 can effectively prevent light from penetrating through, but not limited thereto.
Please refer to fig. 2, which shows a schematic diagram of the principle of the light reflected by the one-way light-emitting light guide plate 1 according to an embodiment of the present invention. LED5 transmitted light gets into light guide plate body 2, and when light shined each site 3, first printing ink layer 31 reflected light to light guide plate body 2 is reflected out through opposite side (inboard) of light guide plate body 2, and second printing ink layer 32 prevents that light from penetrating light guide plate body 2 (outside) through first printing ink layer 31, makes light guide plate body 2 be one side (inboard) luminous, and the outside is luminous not, and then realizes the function of the one-way light-emitting of light guide plate body 2.
In two embodiments of the present invention, please refer to fig. 3, which shows a schematic structural diagram of the one-way light-emitting light guide plate 1 applied to a window of a vehicle or a building. When a display function is added to a window of a vehicle or a building, the transparent LCD9 is preferably installed in such a manner that the transparent LCD9 is generally attached to the inner side of the window (cover glass 7) of the vehicle or the building, and the transparent LCD9 and the transparent LCD9 are installed in the structural member 6 and are installed on the vehicle or the building through the structural member 6.
Since the transparent LCD9 itself is not capable of emitting light, it needs the LED5 and the light guide plate to provide light source, the light guide plate is selected from the above-mentioned one-way light-emitting light guide plate 1 as shown in the embodiment, and is disposed between the transparent LCD9 and the cover glass 7, and the LED5 is disposed on the side of the one-way light-emitting light guide plate 1. Meanwhile, a PDLC film 8 is required to be disposed on the back of the transparent LCD9 to adjust the light source of the transparent LCD 9.
When the transparent LCD9 is used in the daytime, the PDLC film 8 can be turned on and the LED5 can be turned off by means of natural light, so that the content played by the transparent LCD9 can be viewed, and the scenery outside the window can also be viewed; when used at night, the PDLC film 8 is closed, the LED5 is turned on, and the one-way light-emitting light guide plate 1 of the embodiment provides a uniform light source for the transparent LCD9, so that the transparent LCD9 is supported to continue working, and meanwhile, no light pollution exists outside.
In the three embodiments of the present invention, please refer to fig. 4, which shows a schematic structural diagram of a manufacturing method 4 of the unidirectional light-emitting light guide plate 1 according to the three embodiments of the present invention. The manufacturing method 4 of the unidirectional light-emitting light guide plate 1 includes the following steps 401 and 403, wherein:
step 401, providing a carrier. A light guide plate body 2 is provided.
Specifically, the material of the light guide plate body 2 is preferably selected from glass, Polymethyl methacrylate (PMMA), or Polycarbonate (PC), but not limited thereto.
More specifically, the thickness of the light guide plate body 2 is selected to be 1 to 10 millimeters (mm), and may be, for example, 1mm, 3mm, 5mm, 7mm, or 10mm, but is not limited thereto.
Step 402, forming an ink. Mixing the aluminum powder, the titanium dioxide and the synthetic resin to form the ink.
Specifically, the weight content of the titanium dioxide is 33%, the weight content of the aluminum powder is greater than or equal to 27%, and the balance is the weight content of the binder, but not limited thereto.
Specifically, the weight ratio of the aluminum powder, the titanium dioxide and the synthetic resin is 27:33:40, but not limited thereto.
Specifically, titanium dioxide (TiO) in the ink2) Specific gravity of 4.26g/cm3The specific gravity of aluminum (Al) is 2.7g/cm3Due to titanium dioxide (TiO)2) Is greater than that of aluminum (Al), and titanium dioxide (TiO) when the two substances are mixed together2) Will sink and the aluminum (Al) will float upwards to form a layered structureThe resin is adhesive to bond the two materials together.
At step 403, a plurality of dots are formed. A plurality of screen dots 3 are formed on one side of the light guide plate body 2 by using ink as a raw material.
Specifically, the printing ink is coated on the outer side of the light guide plate body 2 by adopting a printing or ink-jet printing mode, and the printing ink is titanium dioxide (TiO)2) The layered aluminum (Al) layer is formed on the lower layer, and the layered dots 3 are layered, i.e. the first ink layer 31 and the second ink layer 32, the first ink layer 31 is located on the light guide plate body 2, and the titanium dioxide (TiO) layer is formed on the upper layer2) On the first ink layer 31, the second ink layer 32 is on the first ink layer 31, and aluminum (Al) is on the second ink layer 32.
Specifically, the thickness of each dot 3 is greater than or equal to 30 micrometers, and each dot 3 (the first ink layer 31) within the thickness range can effectively reflect light, and the second ink layer 32 can effectively prevent light from penetrating through, but not limited thereto.
Compared with the traditional design method of the mesh points of the light guide plate, the manufacturing method 4 of the unidirectional light-emitting light guide plate 1 disclosed by the embodiment is characterized by changing the formula of the ink and the using effect of the product, does not need special equipment or process, and is low in cost, the unidirectional light-emitting light guide plate 1 manufactured by the embodiment can not only meet the requirement of a uniform surface light source, but also has slight influence on the vision (silver white in the application), and especially can be watched at a far distance.
The utility model discloses a four embodiments, according to the one-way light-emitting light guide plate 1 of the preparation method 4 preparation of the one-way light-emitting light guide plate 1 that shows in the above-mentioned three embodiments, wherein, the aluminite powder: titanium dioxide: the ratio of synthetic resin was 27:33:40 and the ink thickness was 35 microns.
For a common television, the brightness requirement is about 300nit, since the transmittance of the transparent LCD is about 40%, if the requirement is to be met, the brightness of the backlight needs to be over 800nit, that is, the light guide plate needs to provide the brightness of 800 nit.
When the light guide plate of the prior art is used, since the light extraction ratio of the front side and the back side is substantially 1:1, the light guide plate of the prior art provides a brightness of 800nit on the front side, and the brightness of the back side is also 800nit, which has a large impact on the environment and causes light pollution.
When the unidirectional light-emitting light guide plate 1 prepared in the embodiment is used, the brightness of 800nit is provided on the front surface, and the brightness of the back surface is reduced to 20nit, so that the ratio of the light emitted from the front surface to the back surface of the unidirectional light-emitting light guide plate 1 in the embodiment can reach 40:1, and compared with the light guide plate in the prior art, the light-emitting rate of the back surface of the light guide plate can be effectively reduced, and the adverse effect of light on the environment is further reduced.
While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive of other embodiments, and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed above, or as otherwise known in the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (7)
1. The utility model provides a one-way light-emitting light guide plate which characterized in that, one-way light-emitting light guide plate includes:
a light guide plate body; and
the light guide plate comprises a light guide plate body, a plurality of dots and a plurality of ink layers, wherein the plurality of dots are arranged on one side of the light guide plate body, each dot comprises a first ink layer and a second ink layer, the first ink layer is arranged on the light guide plate body and used for reflecting light, the second ink layer is arranged on the first ink layer and used for preventing the light from transmitting through the second ink layer;
when the light irradiates each mesh point, the first ink layer reflects the light and reflects the light out of the light guide plate body through the other side of the light guide plate body, and the second ink layer prevents the light from penetrating through the first ink layer and exiting the light guide plate body.
2. The unidirectional light-emitting light guide plate of claim 1, wherein the light guide plate body is made of glass, organic glass or polycarbonate.
3. The light guide plate of claim 1, wherein the light guide plate body has a thickness of 1-10 mm.
4. The light guide plate of claim 1, wherein the thickness of each dot is greater than or equal to 30 μm.
5. The unidirectional light-emitting light guide plate according to claim 1, wherein the main material of each dot comprises titanium dioxide, aluminum powder and an adhesive, the titanium dioxide is located in the first ink layer, and the aluminum powder is located in the second ink layer.
6. The unidirectional light-emitting light guide plate according to claim 5, wherein the titanium dioxide is mainly made of titanium dioxide, the aluminum powder is mainly made of aluminum, and the adhesive is synthetic resin.
7. The unidirectional light-emitting light guide plate according to claim 5, wherein the titanium dioxide accounts for 33% by weight, the aluminum powder accounts for 27% by weight or more, and the balance is the binder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920742839.0U CN209821421U (en) | 2019-05-22 | 2019-05-22 | One-way light-emitting light guide plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920742839.0U CN209821421U (en) | 2019-05-22 | 2019-05-22 | One-way light-emitting light guide plate |
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| CN209821421U true CN209821421U (en) | 2019-12-20 |
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| CN201920742839.0U Active CN209821421U (en) | 2019-05-22 | 2019-05-22 | One-way light-emitting light guide plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045454A (en) * | 2019-05-22 | 2019-07-23 | 江苏铁锚玻璃股份有限公司 | Unidirectionally go out light guide tabula rasa and preparation method thereof |
-
2019
- 2019-05-22 CN CN201920742839.0U patent/CN209821421U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045454A (en) * | 2019-05-22 | 2019-07-23 | 江苏铁锚玻璃股份有限公司 | Unidirectionally go out light guide tabula rasa and preparation method thereof |
| CN110045454B (en) * | 2019-05-22 | 2024-04-02 | 江苏铁锚玻璃股份有限公司 | Unidirectional light-emitting guide light plate and manufacturing method thereof |
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