CN212965501U

CN212965501U - One-way light emitting and guiding structure

Info

Publication number: CN212965501U
Application number: CN202022461021.7U
Authority: CN
Inventors: 吴贲华; 路林; 王亮; 王银茂; 温建林; 朱海平
Original assignee: Jiangsu Tiemao Glass Co Ltd
Current assignee: Jiangsu Tiemao Glass Co Ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-04-13
Anticipated expiration: 2030-10-29

Abstract

The application discloses one-way light-emitting light guide structure, it includes light guide plate, low refraction rete and high refraction rete. The light guide plate comprises a first surface and a second surface opposite to the first surface, and the second surface is provided with a plurality of screen dots. The low-refraction film layer is coated on the first surface of the light guide plate. The high-refraction film layer is coated on the second surface of the light guide plate and covers the plurality of mesh points. The application's two relative surfaces of light guide plate have low refraction rete and high refraction rete, make most light get into the light guide plate after, light can concentrate and jet out towards the surface direction on low refraction rete, and reduce light and jet out by the surface on high refraction rete.

Description

One-way light emitting and guiding structure

Technical Field

The application relates to the technical field of light guide structure, especially, relate to a one-way light-emitting light guide structure.

Background

With the progress of science and technology, the requirements for display technology are more and more, wherein transparent display is more and more popular among consumers with unique visual perception, science and technology feeling, special purposes and the like. The liquid crystal display technology is mature, the performance is stable, and the product price is low. However, the lcd panel itself cannot emit light, and thus a backlight module is required to provide a light source for the lcd panel. The light guide plate can convert point light sources of the light emitting diodes into uniform surface light sources, and is a core light guide device in the backlight module. After the light source is emitted into the light guide plate by the light emitting diode, both sides of the light guide plate can emit light, and the liquid crystal display panel is arranged on one side of the light guide plate, so that the light guide plate can provide the light source for the liquid crystal display panel, but the other side of the light guide plate can also emit the light source.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a one-way light-emitting light guide structure, which can effectively solve the problem that the light utilization rate of the existing light guide plate is not high.

In order to solve the technical problem, the present application is implemented as follows:

the application provides a one-way light-emitting light guide structure, include: the light guide plate, the low refraction film layer and the high refraction film layer. The light guide plate comprises a first surface and a second surface opposite to the first surface, the second surface is provided with a plurality of mesh points, the low-refraction film layer is arranged on the first surface of the light guide plate, and the high-refraction film layer is arranged on the second surface of the light guide plate and covers the mesh points.

In the embodiment of the present application, two surfaces opposite to the light guide plate have the low refraction film layer and the high refraction film layer, so that most of light rays enter the light guide plate, the light rays can be concentrated to be emitted towards the surface direction of the low refraction film layer, and the light rays are reduced to be emitted from the surface of the high refraction film layer.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a perspective view of a unidirectional light extraction and guide structure of the present application;

fig. 2 is another perspective view of the unidirectional light-emitting and guiding structure of the present application;

FIG. 3 is a light path diagram of the unidirectional light extraction and guide structure of the present application;

FIG. 4 is another light path diagram of the unidirectional light extraction light guide structure of the present application; and

fig. 5 is a step diagram of a method for manufacturing a unidirectional light-emitting and guiding structure according to the present application.

Detailed Description

Embodiments of the present application are illustrated in the drawings and, for purposes of clarity, numerous implementation details are set forth in the following description. It should be understood, however, that these implementation details should not be used to limit the application. That is, in some embodiments of the present application, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings. In the following embodiments, the same or similar components will be denoted by the same reference numerals.

Fig. 1 is a perspective view of a unidirectional light emitting and guiding structure according to the present application. As shown in the drawings, the present embodiment provides a unidirectional light emitting and guiding structure 1, which includes a light guiding plate 11, a low refractive film layer 13 and a high refractive film layer 15. The light guide plate 11 includes a first surface 111 and a second surface 113 opposite to the first surface 111, and the second surface 113 has a plurality of dots 1131. The low refractive film layer 13 is disposed on the first surface 111 of the light guide plate 11. The high refractive film layer 15 is disposed on the second surface 113 of the light guide plate 11 and covers the plurality of mesh points 1131.

In the present embodiment, the light is incident into the light guide plate 11, the light is emitted to the first surface 111 or the second surface 113 of the light guide plate 11, and when the light is emitted to the first surface 111, the low-refraction film layer 13 on the first surface 111 reduces the condition that the light is refracted, thereby increasing the passing rate of the light passing through the first surface 111 directly. When the light beam is emitted to the second surface 113, if the light beam is emitted to the dots 1131 on the second surface 113, the dots 1131 will reflect the light beam back into the light guide plate 11. If the light hits the high refractive film layer 15 on the second surface 111, the high refractive film layer 15 will increase the refraction of the light, so that the light is refracted back into the light guide plate 11, and the passing rate of the light directly passing through the second surface 113 is reduced.

As mentioned above, the light guide plate 11 of the present application can improve the light extraction rate of the light from the first surface 111 through the low refractive film layer 13, and reduce the light extraction rate of the light from the second surface 113 through the high refractive film layer 15. Meanwhile, the light emitted to the second surface 113 is reflected by the dots 1131 and guided to exit from the first surface 111, so as to obtain a better light guiding structure for emitting light from the first surface 111 in a single direction.

Please refer to fig. 2, which is another perspective view of the unidirectional light emitting and guiding structure of the present application. As shown in the drawings, in the present embodiment, the unidirectional light-emitting and guiding structure 1 can be applied to a window of a vehicle or a building to add a display function, the unidirectional light-emitting and guiding structure 1 further includes a frame 21, a liquid crystal display panel 23 (i.e., an LCD), a light-adjusting film 25 (i.e., a PDLC), a cover glass 27 and a light-emitting element 29 (i.e., an LED), the frame 21 has a first opening 211 and a second opening 213 opposite to the first opening 211, the light-guiding plate 11 is disposed in the frame 21, the first surface 111 corresponds to the first opening 211, and the second surface 113 corresponds to the second opening 213. The liquid crystal display panel 23 is located between the low refractive film layer 13 and the first opening 211, wherein the liquid crystal display panel 23 is used for displaying pictures.

The light adjusting film 25 is located between the liquid crystal display panel 23 and the low refractive film layer 13, wherein when the light adjusting film 25 is turned off, the polymer liquid crystal material therebetween is randomly arranged, and the light adjusting film 25 is milky opaque. When the light adjusting film 25 is powered on, the polymer liquid crystal material in the middle of the film is orderly arranged under the action of an electric field, so that light can penetrate through the film, and the light adjusting film 25 is in a transparent and colorless film state.

The protective glass 27 is located between the high refractive film layer 15 and the second opening 213, and the protective glass 27 serves as a light-transmitting protective structure for protecting the light guide plate 11. The light emitting element 29 is disposed on one side of the light guide plate 11, wherein the light guide plate 11 further includes a first side 115 and a second side 117 opposite to the first side 115, the first side 115 and the second side 117 are respectively connected between the first surface 111 and the second surface 113, and the light emitting element 29 is disposed on the first side 115 and the second side 117.

Fig. 3 and fig. 4 are a light path diagram and another light path diagram of the unidirectional light-emitting and guiding structure of the present application. As shown in the figure, the unidirectional light-emitting and guiding structure 1 is used as a display device on a window of a vehicle or a building, a is the outside of the vehicle or the building, and B is the inside of the vehicle or the building. When the unidirectional light-emitting and guiding structure 1 is used in daytime, the lcd panel 23 can help to display the image by the external (i.e. side a) natural light, and the external light sequentially passes through the protective glass 27, the light guiding plate 11 and the powered dimming film 25 (i.e. transparent state), and then the external light is provided to the lcd panel 23 to display the image. Thus, the user can watch the contents displayed on the liquid crystal display panel 23 and can watch the outdoor scenery.

Furthermore, when the unidirectional light-emitting light guide structure 1 is used at night, the liquid crystal display panel 23 uses the light source of the light-emitting member 29, and after the point light source of the light-emitting member 29 is emitted into the light guide plate 11, the light guide plate 11 can convert the point light source of the light-emitting member 29 into a uniform surface light source, and the unidirectional light-emitting light guide structure of the light guide plate 11 concentrates light to emit light toward the first surface 111, and the light emitted by the light guide plate 11 passes through the unpowered light modulation film 25 (i.e., a fog surface state). When light passes through the non-energized dimming film 25, the light spots generated by the light reflected by the plurality of dots 1131 in the light guide plate 11 can be scattered by the fog surface of the non-energized dimming film 25, and meanwhile, the light emitted by the light guide plate 11 can be emitted more uniformly by the fog surface of the non-energized dimming film 25, so that the display images can be provided for the liquid crystal display panel 23. The non-energized dimming film 25 may partially shield the light outside at night, such as an advertisement lamp or a car lamp, and reduce the influence of the outside light on the liquid crystal display panel 23.

Fig. 5 is a step diagram of a method for manufacturing a unidirectional light emitting and guiding structure according to the present application. As shown in the drawings, the present embodiment provides a method for manufacturing a unidirectional light emitting and guiding structure, which includes the steps of: step S100: taking a light guide plate 11, wherein the light guide plate 11 includes a first surface 111 and a second surface 113 opposite to the first surface 111.

Step S200: a plurality of dots 1131 are formed on the second surface 113 of the light guide plate 11, wherein the dots 1131 are formed by printing or inkjet, and the material of the dots 1131 includes titanium dioxide, aluminum powder and synthetic resin.

Step S300: the low refractive film layer 13 is plated on the first surface 111 of the light guide plate 11, wherein the low refractive film layer 13 is made of silicon dioxide, magnesium fluoride or aluminum fluoride.

Step S400: the high refractive film layer 15 is plated on the second surface 113 of the light guide plate 11 and covers the plurality of mesh points 1131, wherein the high refractive film layer 15 is composed of lanthanum titanate, titanium dioxide or zinc selenide.

The light guide plate 11 of this application is through the leaded light effect of the 15 components of the low refraction rete 13 of 111 on the first surface and the high refraction rete on the second surface 113, increases light and is by the light through rate of low refraction rete 13, reduces light and is by the light through rate of high refraction rete 15. Meanwhile, the light is reflected back to the light guide plate 11 through the dots 1131 on the second surface 113, so that the light is concentrated as much as possible and is emitted toward the first surface 111.

To sum up, this application provides an one-way light-emitting light guide structure, two surfaces that the light guide plate is relative have low refraction rete and high refraction rete, make most light get into the light guide plate after, light can all concentrate and jet out towards the surface direction on low refraction rete, and reduce light and jet out by the surface on high refraction rete.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

While the foregoing specification illustrates and describes several preferred embodiments of this application, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the invention as expressed herein, either by the above teachings or by the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.

Claims

1. A unidirectional light-emitting and light-guiding structure is characterized by comprising:

the light guide plate comprises a first surface and a second surface opposite to the first surface, wherein the second surface is provided with a plurality of screen dots;

a low refractive film layer disposed on the first surface of the light guide plate; and

and the high-refraction film layer is arranged on the second surface of the light guide plate and covers the plurality of mesh points.

2. The unidirectional light-emitting and light-guiding structure of claim 1, further comprising a frame body, wherein the frame body has a first opening and a second opening opposite to the first opening, the light guide plate is disposed in the frame body, the first surface corresponds to the first opening, and the second surface corresponds to the second opening.

3. The unidirectional light-emitting and light-guiding structure of claim 2, further comprising a liquid crystal display panel positioned between the low-refractive film layer and the first opening.

4. The unidirectional light extraction and guide structure of claim 3, further comprising a light modulation film, wherein the light modulation film is positioned between the liquid crystal display panel and the low refractive film layer.

5. The unidirectional light-emitting and light-guiding structure of claim 2, further comprising a protective glass, wherein the protective glass is positioned between the high-refraction film layer and the second opening.

6. The structure of claim 2, further comprising a light emitting element, wherein the light guide plate further comprises a first side and a second side opposite to the first side, the first side and the second side are respectively connected between the first surface and the second surface, and the light emitting element is disposed on the first side and the second side.