CN201599666U - An ultra-thin medium-sized LED backlight - Google Patents

Abstract

The utility model relates to the technical field of displays, in particular to an ultra-thin and medium-sized LED backlight source, comprising a plastic frame in which a light guide plate, an LED circuit board and an optical film are arranged, and one side of the LED circuit board is An LED lamp is provided, and a strip-shaped plastic holder is provided on the inner wall of the plastic frame, and the light guide plate, the LED circuit board and the optical film are arranged on the strip-shaped rubber holder. In the utility model, other backlight components are supported in the plastic frame by arranging a strip-shaped rubber holder on the inner wall of the plastic frame, so that the lower iron frame can be canceled, and the function of the original lower iron frame is handed over to the bottom of the rubber frame The strip-shaped rubber support is used to support it, thereby reducing the thickness of the backlight. The utility model omits the lower iron frame in the existing backlight source, thereby making the utility model thinner and lower in cost.

Description

An ultra-thin medium-sized LED backlight

technical field

The utility model relates to the technical field of displays, in particular to an ultra-thin and medium-sized LED backlight source.

Background technique

As shown in Figure 1, the existing backlight module consists of an upper iron frame 1, a plastic frame 3, a lower iron frame 9 and other backlight components, the plastic frame 3 is closely attached to the edge of the lower iron frame 9, and other backlight components In the plastic frame 3, the upper iron frame 1 and the lower iron frame 9 are fastened together to lock other backlight components in it, and the backlight component includes glass 2, enhancement film 4, diffusion film 5, and light guide plate 6 , LED circuit board 7 and reflective film 8.

At present, due to the limitation of light guide plate molding technology and equipment, the thickness of the light guide plate is generally designed to be between 2 mm and 3 mm. At the same time, the LED adopts a thicker top-emission packaging form. Therefore, the current medium-sized backlight is limited by technology and materials. The overall thickness of the backlight module is usually designed to be more than 5mm, and the thickness of the light guide plate is usually more than 2mm. The thickness of the iron frame and optical film, and because the thickness of the TFTLCD glass is basically fixed, so the cumulative thickness of the entire module finally reaches more than 5mm.

Utility model content

In order to solve the above problems, the utility model provides an ultra-thin medium-sized LED backlight source with thinner thickness and lower cost.

For realizing above-mentioned object, the technical scheme that the utility model adopts is:

An ultra-thin medium-sized LED backlight source, comprising a plastic frame, a light guide plate, an LED circuit board and an optical film are arranged in the plastic frame, an LED lamp is arranged on one side of the LED circuit board, and the inner wall of the plastic frame A strip-shaped rubber holder is provided, and the light guide plate, LED circuit board and optical film are arranged on the strip-shaped rubber holder.

In order to make the produced backlight source thinner, the thickness of the light guide plate is less than or equal to 1 mm.

In order to make the produced backlight source thinner, the LED lamp is a side-emitting SMD LED lamp, and the LED circuit board is an FPC flexible circuit board.

In order to make the assembly of the produced backlight more firm, the inner wall of the plastic frame and the outer edge of the light guide plate are provided with stable hooks that cooperate with each other.

In the utility model, other backlight components are supported in the plastic frame by arranging a strip-shaped rubber holder on the inner wall of the plastic frame, so that the lower iron frame can be canceled, and the function of the original lower iron frame is handed over to the bottom of the rubber frame The strip-shaped rubber support is used to support it, thereby reducing the thickness of the backlight.

It can be known from the above that the utility model omits the lower iron frame in the existing backlight source, thus making the utility model thinner and lower in cost.

Moreover, applying the utility model to corresponding terminals, such as digital photo frame, P-DVD, PMP, etc., can bring a thinner design to it, make the terminal products more creative and characteristic, and can increase the value of the terminal products so that The self-value of the backlight module can be enhanced, and the trend and demand of ultra-thin design of modern products can be met.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the utility model, constitute a part of the application, and do not constitute an improper limitation of the utility model. In the accompanying drawings:

Figure 1 is an exploded view of the existing backlight structure;

Fig. 2 is the structural representation of the plastic frame of the present utility model;

Fig. 3 is the LED circuit board of the present utility model;

Fig. 4 is an exploded diagram of the structure of the backlight source of the present invention.

Labels in the figure:

1. Upper iron frame 2. Glass

3. Plastic frame 4. Enhancement film

5. Diffusion film 6. Light guide plate

7. LED circuit board 8. Reflective film

9. Lower iron frame 10. LED lights

11. Strip rubber support 12. Shading strip

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The schematic embodiments and descriptions of the utility model are used to explain the utility model, but not as a limitation to the utility model.

As shown in Figure 2, in order to reduce the thickness of the backlight source, the inner wall of the rubber frame 3 of the utility model is provided with a strip-shaped rubber holder 11, and the strip-shaped rubber holder 11 can support other backlight components, so that the lower The iron frame 9 is canceled, and the function of the former lower iron frame 9 is handed over to the bottom strip rubber holder 11 of the rubber frame 3 to support it.

As shown in Figure 3, since the side-emitting SMD LED is thinner than the existing top-emitting packaged LED, in order to further reduce the thickness of the backlight source, the LED lamp 10 used in the utility model is a side-emitting SMD LED lamp. The LED circuit board 7 of the luminescent patch LED lamp is an FPC flexible circuit board.

In order to make it thinner, the thickness of the light guide plate 6 used in the present invention is less than 1 mm. The light guide plate 6 is made of a high-speed machine injection molding machine with a tonnage of more than 100 tons, which can overcome the thinning of the light guide plate in the prior art. and optical homogeneity problems.

In order to assemble more stably, the inner wall of the plastic frame 3 and the outer edge of the light guide plate 6 are provided with stable hooks that cooperate with each other.

As shown in Figure 4, the utility model is an ultra-thin medium-sized LED backlight source, the main materials are light guide plate 6, plastic frame 3, upper iron frame 1, diffusion film 5, brightness enhancement film 4, reflection film 8, light-shielding strip 12. Composition of LED circuit board 7.

The ultra-thin medium-sized LED backlight disclosed in this embodiment is an ultra-thin backlight improved by an ultra-thin light guide plate, a thin plastic frame, an FPC flexible circuit board, and a side-emitting patch LED. The light guide plate and the optical film are assembled In the plastic frame with the bottom rubber support, the lower iron frame is therefore omitted, and the thickness of the backlight module can be reduced to less than 4 mm through the technical solution introduced in the embodiment.

The technical solutions provided by the embodiments of the present invention have been introduced in detail above. In this paper, specific examples have been used to illustrate the principles and implementation methods of the embodiments of the present invention. The descriptions of the above embodiments are only applicable to help understand the present invention. The principle of the embodiment; at the same time, for those of ordinary skill in the art, according to the embodiment of the present invention, there will be changes in the specific implementation and the scope of application. Utility model restrictions.

Claims (4)

1. A kind of ultra-thin medium-sized LED backlight source, comprise plastic frame, be provided with light guide plate, LED circuit board and optical diaphragm in described plastic frame, be provided with LED light on one side of described LED circuit board, it is characterized in that : The inner wall of the plastic frame is provided with a strip-shaped plastic holder, and the light guide plate, the LED circuit board and the optical film are arranged on the strip-shaped rubber holder. 2. The ultra-thin medium-sized LED backlight according to claim 1, wherein the thickness of the light guide plate is less than or equal to 1 mm. 3. The ultra-thin medium-sized LED backlight according to claim 1, wherein the LED lamp is a side-emitting SMD LED lamp, and the LED circuit board is an FPC flexible circuit board. 4. The ultra-thin medium-sized LED backlight according to claim 1, characterized in that: the inner wall of the plastic frame and the outer edge of the light guide plate are both provided with stable hooks that cooperate with each other.

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