CN101620338A - Flexible backlight module structure - Google Patents

Abstract

The invention relates to a flexible backlight module structure, which comprises: a light source module and a flexible light guide plate. The flexible light guide plate has a light incident surface, a light reflecting surface and a light emitting surface. The light incident surface of the flexible light guide plate is combined with the light source module in a direct optical coupling mode, so that incident light of the light source module can be completely coupled into the flexible light guide plate, the light loss rate is reduced, and the light use efficiency is improved. The incident light is reflected to the light-emitting surface by the reflecting surface to emit light after entering the flexible light guide plate, and the flexible light guide plate can be bent according to actual requirements due to the flexible characteristic, so that the application range is wider.

Description

Flexible backlight module structure

technical field

The invention relates to a flexible backlight module structure, in particular to a flexible backlight module structure applied to the backlight module.

Background technique

Liquid crystal display is a kind of display widely used in the market at present, and its application range includes mobile phone screen, notebook computer, digital camera, etc. Generally speaking, a liquid crystal display panel and a backlight module are two important components constituting a liquid crystal display. Among them, the liquid crystal display panel is responsible for color presentation, but since the liquid crystal display panel itself does not have the function of emitting light, it is necessary to configure a backlight module behind the liquid crystal display panel, and the backlight module can provide sufficient light source to make the liquid crystal display image can be displayed.

Most of the currently actively developed large-size displays are used for outdoor advertising, such as displays on the walls of large buildings. When making displays for large outdoor advertisements, if you face irregularly shaped exterior walls, you need to make several small displays first, and then join each other to form a large display. However, such a step of manufacturing a small display first and then bonding will affect the production cost and time of a large display. As for the small-sized display, the scope of application is also limited due to the limitation of the standard shape.

A flexible backlight module as disclosed in Taiwan Invention Patent No. I270724 "Flexible Backlight Module and Its Manufacturing System" includes a soft board with a plurality of grooves; at least one light guide element , which is arranged in the groove, the light guide element can provide light to exit from the opening of the groove; and an upper flexible board, which is covered on the lower flexible board, and the upper flexible board can receive light emitted from the groove The light is finally emitted from the upper soft board.

In the above-mentioned prior art, the backlight module can be bent due to the flexible characteristics of the flexible soft board, so the backlight module can be attached to objects with irregular shapes, so the manufacturing steps of large-scale displays can be simplified . However, the backlight module uses a light guide material to couple the light emitted by the light source into the backlight module. Therefore, the light emitted by the light source may cause light leakage during the optical coupling process, which affects the overall performance of the backlight module.

It can be seen that the above-mentioned existing flexible backlight module obviously still has inconveniences and defects in structure and use, and needs to be further improved. In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and the general products do not have a suitable structure to solve the above-mentioned problems. This is obviously the relevant industry. urgent problem to be solved. Therefore, how to create a new type of flexible backlight module structure is one of the current important research and development topics, and it has also become a goal that the industry needs to improve.

In view of the above-mentioned defects existing in the existing flexible backlight module, the inventor actively researches and innovates based on years of rich practical experience and professional knowledge engaged in the design and manufacture of such products, and cooperates with the application of academic theories, in order to create a The novel flexible backlight module structure can improve the general existing flexible backlight module and make it more practical. Through continuous research, design, and after repeated trial samples and improvements, the present invention with practical value is finally created.

Contents of the invention

The purpose of the present invention is to overcome the defects existing in the existing flexible backlight module and provide a novel structure of the flexible backlight module. The technical problem to be solved is to make it consist of the light source module and the flexible The light guide plate is composed of a flexible light guide plate, which is flexible, so it can be bent and can be used in combination with various types of products, which is very suitable for practical use.

Another object of the present invention is to provide a new type of flexible backlight module structure, the technical problem to be solved is to make the light incident surface of the flexible light guide plate integrally formed and combined with the optical coupling of the light source module , so the assembling steps and components of the flexible backlight module can be simplified, which is more suitable for practical use.

Another object of the present invention is to provide a new type of flexible backlight module structure, the technical problem to be solved is that the light source provided by the light source module can be completely coupled into the flexible light guide plate to avoid light leakage And increase the luminous efficiency of the flexible backlight module, so it is more suitable for practical use.

The purpose of the present invention and the solution to its technical problems are achieved by adopting the following technical solutions. A flexible backlight module structure according to the present invention includes: a light source module and a flexible light guide plate, the flexible light guide plate has a light incident surface, a reflective surface and a light exit surface, And the light incident surface is directly optically coupled with the light source module.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

In the aforementioned flexible backlight module structure, the light source module is a cold cathode tube light source module or a light emitting diode light source module.

In the aforementioned flexible backlight module structure, the flexible light guide plate is in the shape of a plate or a strip.

In the aforementioned flexible backlight module structure, the material of the flexible light guide plate is a flexible light guide material, a silica gel, an epoxy resin or a mixture of a silica gel and an epoxy resin.

In the aforementioned flexible backlight module structure, the reflective surface has a plurality of reflective structures.

In the aforementioned flexible backlight module structure, the reflective surface is formed with a plurality of reflective protrusions or a metal reflective layer.

In the aforementioned flexible backlight module structure, a plurality of microlenses are formed on the light-emitting surface.

In the aforementioned flexible backlight module structure, there are a plurality of microstructures on the light-emitting surface.

In the aforementioned flexible backlight module structure, the reflective surface has a plurality of reflective structures, and the light-emitting surface has a plurality of microstructures.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. As can be seen from the above, in order to achieve the above object, the present invention provides a flexible backlight module structure, which includes: a light source module and a flexible light guide plate, the flexible light guide plate has a light incident surface, A reflective surface and a light emitting surface, and the light incident surface is closely attached to the light source module.

With the above technical solution, the flexible backlight module structure of the present invention has at least the following advantages and beneficial effects:

1. The light source module of the present invention is directly coupled with the light guide plate, so that the light loss rate is effectively reduced, thereby increasing the luminous intensity of the backlight module.

2. The present invention simplifies assembly steps and components, thereby reducing the manufacturing cost of the backlight module.

3. The flexible backlight module of the present invention can be bent according to usage requirements, thus increasing applicability.

To sum up, the present invention relates to a flexible backlight module structure, which includes: a light source module and a flexible light guide plate. Wherein the flexible light guide plate has a light incident surface, a reflection surface and a light exit surface. The light incident surface of the flexible light guide plate is a combination of direct optical coupling with the light source module, so that the incident light of the light source module can be completely coupled into the flexible light guide plate, thus reducing the light loss rate and improving light use efficiency . After the incident light enters the flexible light guide plate, it is reflected by the reflective surface to the light-emitting surface to emit light, and because the flexible light guide plate has the characteristics of flexibility, it can be bent according to actual needs, thus making the application range wider . The present invention has the advantages and practical value mentioned above, and it has great improvement in product structure and function, significant progress in technology, and has produced easy-to-use and practical effects, and is more flexible than the existing flexible ones. The backlight module has enhanced outstanding functions, so it is more suitable for practical use, and it is a novel, progressive and practical new design.

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the following preferred embodiments are specifically cited below, and are described in detail as follows in conjunction with the accompanying drawings.

Description of drawings

FIG. 1 is a perspective view of a preferred embodiment of the flexible backlight module structure of the present invention.

FIG. 2 is a perspective view of another embodiment of the structure of the flexible backlight module of the present invention.

Fig. 3 is a cross-sectional view along line A-A in Fig. 2 .

FIG. 4 is a cross-sectional view of a third embodiment of the flexible backlight module structure of the present invention.

FIG. 5 is a cross-sectional view of a fourth embodiment of the structure of the flexible backlight module of the present invention.

10: Flexible backlight module structure 20: Light source module

30: Flexible light guide plate 31: Light incident surface

32: Reflective surface 321: Reflective structure

322: Metal reflective layer 33: Light-emitting surface

331: Microstructure

Detailed ways

In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation, structure and characteristics of the flexible backlight module structure proposed according to the present invention will be described below in conjunction with the accompanying drawings and preferred embodiments. and its efficacy are described in detail below.

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with reference to the drawings. Through the description of the specific implementation mode, when the technical means and functions adopted by the present invention to achieve the predetermined purpose can be obtained a deeper and more specific understanding, but the accompanying drawings are only for reference and description, and are not used to explain the present invention be restricted.

Please refer to Figure 1, Figure 2 and Figure 3, Figure 1 is a perspective view of a preferred embodiment of the structure of the flexible backlight module of the present invention, and Figure 2 is a perspective view of another embodiment of the structure of the flexible backlight module of the present invention Perspective view, Fig. 3 is a cross-sectional view along the section line A-A in Fig. 2 . The flexible backlight module structure 10 of the preferred embodiment of the present invention includes: a light source module 20 and a flexible light guide plate 30 .

The above-mentioned light source module 20 can be a cold cathode tube light source module 20 or an LED light source module 20 . When the cold cathode tube light source module 20 is used, a line of light source will be provided. When a single LED light source module 20 is used, a point light source can be provided, and if a plurality of LED light source modules 20 are used simultaneously, a line light source can also be formed.

The above-mentioned flexible light guide plate 30 can be in the shape of a strip or a plate, and each has a light incident surface 31, a reflective surface 32 and a light exit surface 33, and the material of the flexible light guide plate 30 can be It is a flexible light guide material, a silica gel, an epoxy resin or a mixture of a silica gel and an epoxy resin.

The light incident surface 31 of the flexible light guide plate 30 is directly optically coupled with the light source module 20 , for example, the combination of silica gel and the light source module 20 is integrally molded by mold injection molding.

Due to the integrated design of the light incident surface 31 and the light source module 20 , the components in the flexible backlight module 10 are simplified and the overall manufacturing cost is reduced. At the same time, since the light incident surface 31 and the light source module 20 are tightly bonded without a medium, the light emitted from the light source module 20 can be completely coupled to the flexible light guide plate 30 after passing through the light incident surface 31 middle. To avoid light leakage and light loss, and further increase the luminous efficiency of the flexible backlight module 10 .

When the incident light of the light source module 20 enters the strip-shaped or plate-shaped flexible light guide plate 30 through the light-incident surface 31 , it is reflected to the light-emitting surface 33 by the reflective surface 32 to emit light. And the reflective surface 32 can have a plurality of reflective structures 321, for example: a plurality of reflective protrusions, a plurality of conical protrusions, a plurality of square dot structures, a plurality of irregular dot structures, grooves, grooves.. .wait. The arrangement of multiple reflective structures 321 can help to control the reflection angle of the incident light, so that all the incident light can be reflected to the light-emitting surface 33 .

At the same time, the light-emitting surface 33 of the above-mentioned flexible light guide plate 30 can be provided with a plurality of microstructures 331, for example: a plurality of micro-lenses, a plurality of grooves, a plurality of light-collecting prisms, a plurality of point-shaped protrusions... .wait. The plurality of microstructures 331 are used to regulate the light from the reflective surface 32 , and through the action of the plurality of microstructures 331 , can be used to regulate the exit angle of the light. The light passing through the light-emitting surface 33 of the flexible light guide plate 30 can exhibit the effect of uniform or concentrated light.

When the flexible light guide plate 30 is strip-shaped, it can be applied to a small-sized flexible backlight module structure 10 . And when the flexible light guide plate 30 is plate-shaped, it can be applied to the large flexible backlight module structure 10 . And because they are all flexible, they can be bent and deformed according to actual needs, and can even fit objects with irregular shapes without being limited by their shapes, thus increasing their applicability.

Please refer to FIG. 4 , which is a cross-sectional view of a third embodiment of the flexible backlight module structure of the present invention. In the flexible light guide plate 30 in the third embodiment of the present invention, a metal reflective layer 322 can be formed on the reflective surface 32 to increase the amount of light emitted from the light emitting surface.

Please refer to FIG. 5 , which is a cross-sectional view of a fourth embodiment of the structure of the flexible backlight module of the present invention. In the fourth embodiment of the present invention, since the flexible light guide plate 30 has a flexible property, the flexible backlight module 10 can be applied to bending deformation. And when the flexible light guide plate 30 is formed into a curved shape, the reflective surface 32 and the light-emitting surface 33 thereof will both be curved at the same time.

In order to avoid the incident light from the light source module 20 , the light path is distorted due to the curved shape formed by the reflective surface 32 and the light output surface 33 , resulting in the problem of weakening of light source intensity in areas far away from the light source module 20 . The reflective surface 32 and the light-emitting surface 33 of the flexible light guide plate 30 can be provided with a plurality of reflective structures 321 and a plurality of microstructures 331 respectively at the same time.

By cooperating with the multiple reflective structures 321 and the multiple microstructures 331, the incident light is not affected by the bending of the flexible light guide plate 30, and can be evenly distributed in the overall flexible backlight module structure 10, thereby producing the best Excellent luminous efficiency. Therefore, the flexible backlight module structure 10 can be bent freely according to actual application requirements, and still provide the best luminous efficiency stably.

The plurality of reflective structures 321 and metal reflective layers 322 on the reflective surface 32 of the above-mentioned flexible light guide plate 30, as well as the plurality of microstructures 331 on the light-emitting surface 33 of the flexible light guide plate 30, will all be based on actual conditions. It needs to be selected and implemented to achieve the best effect.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all the content that does not depart from the technical solution of the present invention, according to the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments by the technical essence still belong to the scope of the technical solution of the present invention.

Claims (9)

1, a kind of flexible backlight module structure is characterized in that it comprises:

One light source module; And

One type flexible leaded light plate, it has an incidence surface, a reflecting surface and an exiting surface, and this incidence surface is and combining that this light source module direct sunshine is coupled.

2, flexible backlight module structure according to claim 1 is characterized in that wherein said light source module is a cold-cathode tube light source module or a LED light source module.

3, flexible backlight module structure according to claim 1 is characterized in that wherein said type flexible leaded light plate is a tabular or strip.

4, flexible backlight module structure according to claim 1, the material that it is characterized in that wherein said type flexible leaded light plate are the potpourri of a pliability light guide, a silica gel, an epoxy resin or a silica gel and an epoxy resin.

5, flexible backlight module structure according to claim 1 is characterized in that wherein said reflecting surface is to have most reflection configurations.

6, flexible backlight module structure according to claim 1 is characterized in that wherein said reflecting surface is to form to be provided with most reflection protuberances or a metallic reflector.

7, flexible backlight module structure according to claim 1 is characterized in that on the wherein said exiting surface it being to form to be provided with most lenticules.

8, flexible backlight module structure according to claim 1 is characterized in that on the wherein said exiting surface it being to have most microstructures.

9, flexible backlight module structure according to claim 1 is characterized in that wherein said reflecting surface is to have most reflection configurations, and is to have most microstructures on this exiting surface.

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