TW201816483A - Double-sided electronic billboard - Google Patents

Abstract

A double-sided electronic billboard includes a backlight module, a display panel, a printed image, and a reflective element. The backlight module has a first surface and a second surface opposite to the first surface. The display panel is disposed on the first surface of the backlight module. The printed image is disposed on the second surface of the backlight module. The reflective element is disposed between the backlight module and the printed image. The reflectivity of the reflective element is greater than 50% and less than 100%.

Description

 Double-sided electronic board  

The disclosure relates to a double-sided electronic signage.

Advertising billboards are often placed outdoors for advertising, landscape viewing or beautifying living spaces to achieve advertising purposes. Some advertising billboards are printed, which are clearly visible during the day, but at night they lose the effect of advertising and advertising. In addition, if only print ads are used, the content of the advertisement may appear boring and lack the shortcomings of instant update.

One aspect of the present disclosure provides a double-sided electronic kanban comprising a backlight module, a display panel, a printed image, and a reflective element. The backlight module has opposite first and second surfaces. The display panel is placed on the first surface of the backlight module. The printed image is placed on the second surface of the backlight module. The reflective element is placed between the backlight module and the printed image. The reflectivity of the reflective element is greater than 50% and less than 100%.

The double-sided electronic signboard of the above embodiment can utilize a single backlight module to achieve a double-sided display function, that is, as a light source of the display panel and the printed image. The brightness of the display panel and the printed image is different, so the backlight module can provide a large amount of light to the display panel, and provide a small amount of light to the printed image, not only does not reduce the brightness required by the display panel, but also Providing the remaining light to the printed image is environmentally friendly.

110‧‧‧Backlight module

112‧‧‧Light source

114‧‧‧Light guide plate

114a‧‧‧ first surface

114b‧‧‧second surface

114c‧‧‧ side

120‧‧‧ display panel

130‧‧‧Printed imagery

140‧‧‧reflecting elements

150‧‧‧Adhesive components

160‧‧‧Brightening film

170‧‧‧Diffuser

180‧‧‧Frame

182‧‧‧ accommodating space

184‧‧‧ openings

FIG. 1 is a schematic diagram of a double-sided electronic signboard according to an embodiment of the present disclosure.

Figure 2 is a schematic cross-sectional view of the double-sided electronic kanban along the first Figure.

FIG. 3 is a schematic diagram of a double-sided electronic signboard according to another embodiment of the present disclosure.

The embodiments of the present disclosure are disclosed in the following drawings, and for the sake of clarity, many of the details of the practice will be described in the following description. However, it should be understood that these practical details are not intended to limit the disclosure. That is, in some embodiments of the disclosure, these practical details are not necessary. In addition, some of the conventional structures and elements are shown in the drawings in a simplified schematic manner in order to simplify the drawings.

1 is a schematic view of a double-sided electronic signboard according to an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of the double-sided electronic board taken along the first drawing. The double-sided electronic signboard includes a backlight module 110, a display panel 120, a printed image 130, and a reflective element 140. The backlight module 110 has a first surface 114a and a second surface 114b opposite to each other. The display panel 120 is placed on the first surface 114a of the backlight module 110. The printed image 130 is placed on the second surface 114b of the backlight module 110. The reflective element 140 is disposed between the backlight module 110 and the printed image 130. The reflectivity of the reflective element 140 is greater than 50% and less than 100%.

In the embodiment, the first surface 114 a of the backlight module 110 is a light emitting surface to provide a light source of the display panel 120 . With such a structure, the display panel 120 can display an electronic (digital) pattern. On the other hand, the reflective component 140 can reflect most of the light emitted from the second surface 114b of the backlight module 110 back to the backlight module 110 to increase the light extraction rate of the first surface 114a. However, the reflectivity of the reflective component 140 is not Up to 100%, the backlight module 110 still has a small portion of the light transmissive reflective element 140. This portion of the light can be used as a light source for printing the image 130, and the printed image 130 is illuminated from the back side to increase its brightness. In this way, the double-sided electronic signboard of the present embodiment can achieve the function of double-sided display to increase the application surface thereof. The double-sided electronic signboard not only realizes the electronic display, but also has the advantage of instantly changing the image. The space on the back side can also be used to brighten the printed image 130, which has the advantages of making full use of the display space and having the environmental protection of light energy.

Please refer to Figure 2. In the embodiment, the backlight module 110 includes a light source 112 and a light guide plate 114. The light guide plate 114 has a first surface 114a, a second surface 114b and at least one side surface 114c, and the side surface 114c connects the first surface 114a and the second surface 114b. For example, in FIGS. 1 and 2, the light guide plate 114 has a rectangular shape, and thus the light guide plate 114 has four side faces 114c. In other embodiments, the light guide plate 114 may be a cylinder or a multi-faceted cylinder. The disclosure is not limited thereto. The first surface 114a is a light emitting surface of the light guide plate 114, and the second surface 114b is a backlight surface of the light guide plate 114. The light source 112 is disposed on at least one side surface 114c of the light guide plate 114, so that the light emitted by the light source 112 can enter the light guide plate 114 from the side surface 114c. In other words, the backlight module 110 can be a side-lit backlight module.

After the light beam provided by the light source 112 enters the light guide plate 114, it is reflected multiple times in the light guide plate 114, part of the light is directly emitted from the first surface 114a, and the other part of the light is emitted from the second surface 114b. Since the reflective element 140 is located on the second surface 114b, most of the light reaching the second surface 114b is reflected back to the light guide plate 114, and then emitted by the first surface 114a, and only a portion of the light can penetrate the reflective element 140. Therefore, the brightness of the first surface 114a of the backlight module 110 is greater than the brightness of the second surface 114b, that is, most of the light is emitted by the first surface 114a. The backlight module 110 provides a large amount of light to the display panel 120 while also providing a small amount of light to the printed image 130 to achieve the effect of double-sided display at the same time.

In some embodiments, the printed image 130 is a paper product, a cloth product, a plastic article, or a combination thereof. For example, the printed image 130 can be a paper poster, a cloth strip, a plastic kanban, or other semi-transparent material. The printed image 130 is printed on the bottom of the paper, cloth, plastic or other material. The light of the backlight module 110 can be lighted from the back side of the printed image 130, and the light partially penetrates the printed image 130 to increase the brightness of the printed image 130.

Please refer to Figure 1. In some embodiments, the double-sided electronic signboard further includes at least one adhesive component 150 for fixing the printed image 130 to the second surface 114b of the backlight module 110. The adhesive component 150 can be a transparent or opaque tape, or a double-sided tape, in some embodiments, can be adhered to the periphery of the printed image 130 to fix the printed image 130 to the second surface 114b of the backlight module 110 (or the reflective component 140). )on. However, the disclosure is not limited thereto. In other embodiments, as long as the printed image 130 can be fixed on the second surface 114b (or the reflective element 140) of the backlight module 110, it is within the scope of the disclosure.

In some embodiments, the display panel 120 is a liquid crystal display panel. The liquid crystal display panel comprises a plurality of liquid crystal molecules, and the electric field can change the steering of the liquid crystal molecules, so that the light of the backlight module 110 can be blocked by the liquid crystal molecules or penetrate the liquid crystal molecules, whereby the liquid crystal molecules can block the backlight module 110 Light is modulated into an image. However, in other embodiments, the display panel 120 can be other types of panels, such as an electrowetting display panel, an electrophoretic display panel, or other panel capable of modulating the light of the backlight module 110 into an image. limit.

Please refer to Figure 2. In some embodiments, the double-sided electronic kanban further includes at least one optical film disposed between the display panel 120 and the backlight module 110. For example, in FIG. 2, the display panel 120 and the backlight module 110 have two layers of optical films, respectively, a light-enhancement film 160 and a diffusion plate 170. The brightness enhancement film 160 is disposed between the diffusion plate 170 and the display panel 120, and the diffusion plate 170 is disposed between the brightness enhancement film 160 and the backlight module 110. The brightness enhancing film 160 is, for example, a film having a microstructure that can change the direction of travel of the light, such as changing the oblique light to direct light to increase the brightness of the light. In addition, the diffusion plate 170 may be a membrane having a microstructure or a membrane composed of diffusion particles having different refractive indices. The light passes through a series of refraction, reflection and scattering in the diffuser plate 170, thereby changing the traveling direction of the light, so that the incident light is sufficiently scattered to achieve the effect of optical diffusion.

In other embodiments, the type and number of layers of the optical film are not limited to the above, and for example, an optical film having more than two layers, or a polarizing plate, may be included in the scope of the present disclosure. In addition, in some embodiments, there may be no optical film between the reflective element 140 and the printed image 130, that is, light that penetrates the reflective element 140 directly enters the printed image 130.

Next, please refer to FIG. 3 , which is a schematic diagram of a double-sided electronic signboard according to another embodiment of the disclosure. The difference between Fig. 3 and Fig. 1 lies in the frame 180. In FIG. 3, the frame 180 is placed on the second surface 114b of the backlight module 110 (as indicated in FIG. 2). The frame 180 includes an accommodating space 182 in which the printed image 130 is removably placed. Specifically, the frame 180 can be a hollow shelf, and the accommodating space 182 is exposed from a side of the frame 180 away from the backlight module 110. Therefore, when the printed image 130 is placed in the accommodating space 182, the printed image 130 can be self-framed. 180 exposed. In some embodiments, the frame 180 further has an opening 184 connecting the receiving space 182. The printed image 130 can be inserted into the accommodating space 182 from the opening 184 , and the printed image 130 can be extracted from the accommodating space 182 from the opening 184 . Although in FIG. 3, the position of the opening 184 is located on the upper surface of the frame 180, in other embodiments, the opening 184 may be located on the side or the lower surface of the frame 180, and the disclosure is not limited thereto. In addition, the form of the frame 180 of FIG. 3 is exemplified. In other embodiments, the frame 180 may include two parallel slide rails or other suitable structures, and the disclosure is not limited thereto. Other details of the present embodiment are similar to those of Figs. 1 and 2, and therefore will not be described again.

In summary, the double-sided electronic signboard of the above embodiment can utilize a single backlight module to achieve a double-sided display function, that is, as a light source for the display panel and the printed image. The display panel and the printed image require different brightness, so the backlight module can provide a large amount of light to the display panel, and provide a small amount of light to the printed image, not only does not reduce the brightness required by the display panel, but also Providing the remaining light to the printed image has an environmentally friendly effect and at the same time achieves the functions of electronic display and printed display.

The present disclosure has been disclosed in the above embodiments, and is not intended to limit the disclosure. Any one skilled in the art can make various modifications and retouchings without departing from the spirit and scope of the disclosure. The scope is subject to the definition of the scope of the patent application attached.

Claims (10)

 A double-sided electronic kanban comprising: a backlight module having a first surface and a second surface; a display panel disposed on the first surface of the backlight module; a printed image placed in the backlight The second surface of the module; and a reflective element disposed between the backlight module and the printed image, wherein the reflective element has a reflectivity greater than 50% and less than 100%.    The double-sided electronic kanban of claim 1, wherein the first surface of the backlight module has a light-emitting brightness greater than a light-emitting brightness of the second surface.    The double-sided electronic signage of claim 1, wherein the printed image is a paper product, a cloth product, a plastic product, or a combination thereof.    The double-sided electronic signage of claim 1, wherein the printed image is a poster.    The double-sided electronic kanban according to claim 1, further comprising an adhesive component for fixing the printed image on the second surface of the backlight module.    The double-sided electronic kanban of claim 1 further comprising a frame disposed on the second surface of the backlight module, wherein the frame includes an accommodating space, and the printed image is removably placed in the vacant space in.    The double-sided electronic kanban according to claim 1, wherein the backlight module is a side-lit backlight module.    The double-sided electronic signage of claim 1, wherein the display panel is a liquid crystal display panel.    The double-sided electronic kanban of claim 1 further comprising at least one optical film disposed between the display panel and the backlight module.    The double-sided electronic kanban of claim 9, wherein the at least one optical film is a diffusion plate or a brightness enhancement film.