TWM467186U - Flexible led module - Google Patents

Description

Soft LED light source module

The present invention is to provide an LED package structure, and more particularly to a thin flexible LED light source module with flexible and single-sided or double-sided illumination.

According to the light emitting diode (LED), it has the advantages of power saving, long service life, small size, and planar packaging. It has gradually replaced traditional light sources for automotive, communication, consumer electronics, industrial instrumentation, etc. Various fields. As the application range of LED continues to expand, there are two major directions for the development of LEDs today, one is to provide a high uniformity light source, and the other is to provide a high-brightness light source, because the brightness of a single LED chip cannot meet the general lighting needs. Therefore, it is desirable to improve the external light extraction rate and photoelectric conversion efficiency by the improvement of the packaging technology.

In the field of illumination, a single LED light source can be assembled into a light source module in a continuous arrangement and flexibly designed for architectural decoration or general lighting purposes. For example, the Chinese Patent No. M316972 discloses an illuminating light bar comprising an inner layer fixing seat, an LED light string group and an outer layer fixing body LED illuminating light bar, wherein the LED illuminating unit is connected to the wire group. And through the flexible printed circuit board (FPC) to achieve flexible characteristics.

In addition, Chinese Patent Nos. 558803 and 558804 disclose a flexible illuminator device and a method of manufacturing the same, which are obtained by soldering a plurality of LEDs, resistors and wires to a pre-formed inner layer mount and The main line is electrically connected. Most of the above flexible light source modules use LED components through SMD programs and soft The combination of the substrate; however, the installation and fixing methods limit the application of the size, size, illumination angle and perspective of the LED product, and the uniform surface light source effect of single and double-sided illumination cannot be achieved.

The main purpose of this creation is to provide a flexible LED light source module formed by using a package method, which can solve the problem that the traditional flexible LED light source module cannot be thinned, and can not achieve the uniform surface of single and double-sided illumination. Light source effect.

According to an embodiment of the present invention, the flexible LED light source module includes a flexible transparent substrate, a bendable driving circuit, at least one light emitting diode, and a soft transparent cover, wherein the soft light transmitting The substrate has an upper surface and a lower surface, the bendable driving circuit is disposed on the upper surface of the flexible transparent substrate, and the light emitting diode is disposed on the upper surface of the flexible transparent substrate and is connected to the bendable The driving transparent circuit covers the light emitting diode and the bendable driving circuit.

In an embodiment of the present invention, the flexible transparent substrate includes a plurality of uniformly distributed or non-uniformly distributed diffusion particles.

In an embodiment of the present invention, the outer surface of the light emitting diode is coated with a phosphor layer.

In an embodiment of the present invention, the flexible transparent substrate includes a plurality of uniformly distributed or non-uniformly distributed diffusion particles and a fluorescent powder.

In an embodiment of the present invention, a reflective layer is further included, and the reflective layer covers the flexible transparent cover.

In an embodiment of the present invention, the flexible transparent cover plate includes a plurality of uniformly distributed or non-uniformly distributed diffusion particles.

In an embodiment of the present invention, the outer surface of the light emitting diode is coated with a phosphor layer.

In an embodiment of the present invention, the flexible transparent cover plate includes a plurality of uniformly distributed or non-uniformly distributed diffusion particles and a fluorescent powder.

In an embodiment of the present invention, the flexible transparent substrate is a plastic substrate.

In an embodiment of the present invention, the flexible transparent cover is a high transparent plastic cover.

This creation has at least the following advantages:

1. The soft LED light source module of this creation uses a flexible and transparent upper and lower substrate to form a thin light source and circuit package. In addition to meeting the requirements of thin products, its flexible characteristics can be used for various illuminations and backlights. Or other scope of application.

Second, the soft LED light source module of the present invention can further add a diffusing agent in the soft transparent substrate or the soft transparent cover plate, and selectively add a reflective layer on the soft transparent cover plate to achieve one-sided or double-sided The effect of uniform illumination.

The above description of the present invention and the following description of the embodiments are provided to illustrate and explain the principles of the present invention, and to provide further explanation of the scope of the patent application of the present invention.

100, 100a, 100b, 100c‧‧‧soft LED light source module

1, 1'‧‧‧Soft transparent substrate

11‧‧‧ upper surface

2‧‧‧Flexible drive lines

3‧‧‧Lighting diode

31‧‧‧Fluorescent layer

4, 4'‧‧‧Soft translucent cover

5‧‧‧Diffusion particles

6‧‧‧Fluorescent powder

7‧‧‧reflective layer

8‧‧‧Aluminum extruded frame

L1‧‧‧ incident light

L2‧‧‧ penetrating light

L3‧‧‧ reflected light

1 is a schematic cross-sectional view of a soft LED light source module according to a first embodiment of the present invention.

2 is a cross-sectional view showing a soft LED light source module according to a second embodiment of the present invention.

3 is a cross-sectional view showing a soft LED light source module according to a third embodiment of the present invention.

4 is a cross-sectional view showing a soft LED light source module according to a fourth embodiment of the present invention.

Figure 5 is a schematic cross-sectional view of the planar light fixture of the present invention.

The "soft LED light source module" of the present invention is mainly formed by using a flexible and transparent material upper and lower substrate combined with a thin light source and a circuit to form a thinned function, and a uniform surface light source for single or double-sided illumination. The effect is suitable for lighting, backlight and other areas. Hereinafter, the specific implementation of the present creation will be described in detail.

[First Embodiment]

Please refer to FIG. 1 , which is a cross section of the soft LED light source module according to the first embodiment of the present invention. Schematic diagram. The flexible LED light source module 100 of the present embodiment includes a flexible transparent substrate 1, a bendable driving circuit 2, at least one light emitting diode 3, and a flexible transparent cover 4.

Specifically, the flexible transparent substrate 1 is made of a material that is flexible and transparent to light, such as polyethylene terephthalate (PET), polyvinyl chloride (PVC), polyethylene (PE), A plastic substrate made of materials such as polyamine (PI), but this creation is not limited to this. In the present embodiment, the flexible transparent substrate 1 is made of a transparent material, and the thickness of the flexible transparent substrate 1 is preferably less than 1 mm.

The driving circuit 2 is formed by printing a bendable conductive material on the upper surface 11 of the flexible transparent substrate 1 (having upper and lower surfaces). The selected conductive material may be silver paste (including silver, filler), but is not limited thereto. Thus, the flexible transparent substrate 1 does not cause the drive line 2 to open when bent.

The light emitting diode 3 is disposed on the upper surface 11 of the flexible transparent substrate 1 and electrically connected to the driving circuit 2, and the light emitting diode 3 is a light emitting diode of the transparent substrate, such as sapphire or tantalum carbide (Sic). The light-emitting diode of the substrate is not limited thereto, and the outer surface of the light-emitting diode 3 is further covered with a fluorescent layer 31, which can provide a light source of different color lights.

In this embodiment, the number of the light-emitting diodes 3 is three, but is not limited thereto, and the number thereof may be adjusted according to actual application requirements; the light-emitting diodes 3 are disposed at intervals on the driving circuit 2 In addition, the positive and negative electrodes are connected to the drive line 2 to achieve electrical communication. Alternatively, in a modified real state, a plurality of metal pads (not shown) may be disposed on the upper surface 11 of the flexible transparent substrate 1 in the same number as the number of the light emitting diodes. 3, respectively, disposed on the metal pads; or alternatively, a plurality of conductive connection pads (not shown) may be disposed on the edge of the flexible transparent substrate 1, and the LEDs 3 may pass through a plurality of bonding wires (Fig. Not shown) the positive and negative electrodes are respectively connected to the conductive connection pads to achieve electrical communication.

The flexible transparent cover 4 is disposed on the upper surface 11 of the flexible transparent substrate 1 and covers the LED 3 and the driving circuit 2, and the material of the flexible transparent cover 4 is a high translucent plastic, such as a thermosetting type or Thermoplastic plastic, which contains at least epoxy resin (Epoxy), poly Polystyrene (PS), Acrylonitrile-Butadene-Styrene (ABS), Polymethyl methacrylate (PMMA), Acrylic resin , but not limited to this, the material of the flexible transparent cover 4 of the embodiment can be adjusted according to product requirements.

Furthermore, the flexible transparent cover 4 of the embodiment may further comprise a plurality of uniformly distributed or non-uniformly distributed diffusion particles 5, which can mix high refractive index particles or high reflectivity opaque particles into the manufacturing process. The light-transmissive resin is formed to allow light to be emitted in a diffused manner, which increases the uniformity of the light source. It should be noted that the closer the refractive index of the flexible transparent substrate 1 and the flexible transparent cover 4 is, the better the loss of light in the flexible LED light source module 100 of the embodiment can be improved to improve the external light extraction efficiency.

In this way, the light L1 emitted by the partial light-emitting diodes 3 can penetrate the flexible transparent cover 4 to form the outgoing light L2, and the other part of the light L1 forms the reflected light L3 through the metal reflective effect of the reflective layer 7. The flexible LED light source module 100 of the present embodiment can provide a thinned and uniform illumination on both sides.

[Second embodiment]

Please refer to FIG. 2 , which is a cross-sectional view of a soft LED light source module according to a second embodiment of the present invention. The difference from the first embodiment is that the soft LED light source module 100a of the present embodiment adjusts the emitted color light by mixing the phosphor powders 6 of the respective colors on the flexible transparent cover 4'. In other words, the flexible transparent cover 4' of the embodiment includes uniformly or non-uniformly distributed diffusion particles 5 and phosphor powder 6; thus, the outer surface of the LED 3 does not need to be covered with fluorescent light. Layer 31.

[Third embodiment]

Please refer to FIG. 3 , which is a cross-sectional view of a soft LED light source module according to a third embodiment of the present invention. The difference from the first embodiment is that the flexible LED light source module 100b of the embodiment further includes a reflective layer 7, and the diffusion particles 5 are The flexible transparent substrate 1 of the present embodiment includes diffused particles 5 uniformly distributed or non-uniformly distributed.

Specifically, the reflective layer 7 is a layer of high reflectivity material formed by lamination, coating or sputtering outside the flexible translucent cover 4, but the creation of the reflective layer 7 is not limited. Accordingly, the light L1 emitted by a small portion of the light-emitting diodes 3 can penetrate the soft transparent cover 4 to form the outgoing light L2, and most of the light L1 is reflected by the metal reflection effect of the reflective layer 7. Since the light L3 is emitted to the outside through the flexible transparent substrate 1, the light source module 100b of the present embodiment can provide a thinned and uniform illumination on one side. It is worth mentioning that this embodiment can control the ratio of light penetration and reflection by adjusting the thickness of the reflective layer 7.

[Fourth embodiment]

Please refer to FIG. 4 , which is a cross-sectional view of a soft LED light source module according to a fourth embodiment of the present invention. The difference from the previous embodiment is that the soft LED light source module 100c of the present embodiment adjusts the emitted color light by mixing the phosphor powders 6 of the respective colors on the flexible transparent substrate 1'. In other words, the flexible transparent substrate 1' of the present embodiment includes the uniformly distributed or non-uniformly distributed diffusing particles 5 and the phosphor powder 6; thus, the outer surface of the light emitting diode 3 does not need to be coated with the fluorescent layer. 31.

[Fifth Embodiment]

Please refer to FIG. 5 , which is a schematic cross-sectional view of a planar luminaire to which the soft LED light source module of the present invention is applied. In the planar light fixture of the embodiment, an aluminum extruded frame 8 is disposed on the outermost edge of the flexible LED light source module 100, and covers a portion of the flexible transparent substrate 1 and a portion of the flexible transparent substrate 4; The aluminum extruded frame 8 covers the non-optical surface of the flexible LED light source module 100 to form a planar light fixture of the present double-sided uniform illumination type; in addition, the planar light fixture may further include at least one light guide plate, which is provided The optical surface of the flexible LED light source module 100 is used to impart different optical effects to the planar light fixture.

Therefore, compared with the traditional flexible LED lighting module, the creation has the following features and functions:

1. The soft LED light source module of this creation uses a flexible and transparent upper and lower substrate to form a thin light source and circuit package. In addition to meeting the requirements of thin products, its flexible characteristics can be used for various illuminations and backlights. Or other scope of application.

Second, the soft LED light source module of the present invention can further add a diffusing agent in the soft transparent substrate or the soft transparent cover plate, and selectively add a reflective layer on the soft transparent cover plate to achieve one-sided or double-sided The effect of uniform illumination.

Third, the soft LED light source module of the present invention can control the ratio of light penetration and reflection by adjusting the thickness of the reflective layer to increase the applicability of the soft LED light source module.

In summary, this creation has already met the requirements of the new patent and applied in accordance with the law. However, the above disclosures are only preferred embodiments of the present invention, and the scope of rights of the present invention cannot be limited thereto. Therefore, the equal changes or modifications made according to the scope of the application of the present application are still covered by the present application.

100‧‧‧Soft LED light source module

1‧‧‧Soft transparent substrate

11‧‧‧ upper surface

2‧‧‧Flexible drive lines

3‧‧‧Lighting diode

31‧‧‧Fluorescent layer

4‧‧‧Soft transparent cover

5‧‧‧Diffusion particles

L1‧‧‧ incident light

L2‧‧‧ penetrating light

L3‧‧‧ reflected light

Claims (10)

A flexible LED light source module comprises: a flexible transparent substrate having an upper surface and a lower surface; a bendable driving circuit disposed on the upper surface of the flexible transparent substrate; at least one light emitting diode, And disposed on the upper surface of the flexible transparent substrate and connected to the bendable driving circuit; and a flexible transparent cover plate covering the light emitting diode and the bendable driving circuit. The flexible LED light source module of claim 1, wherein the flexible transparent substrate comprises a plurality of uniformly distributed or non-uniformly distributed diffusion particles. The soft LED light source module of claim 2, wherein the outer surface of the light emitting diode is coated with a phosphor layer. The flexible LED light source module of claim 2, wherein the flexible transparent substrate comprises a plurality of uniformly distributed or non-uniformly distributed diffusion particles and a fluorescent powder. The flexible LED light source module of claim 1, further comprising a reflective layer covering the flexible transparent cover. The flexible LED light source module of claim 5, wherein the flexible transparent cover plate comprises a plurality of uniformly distributed or non-uniformly distributed diffusion particles. The soft LED light source module of claim 6, wherein the outer surface of the light emitting diode is coated with a phosphor layer. The flexible LED light source module of claim 6, wherein the flexible transparent cover comprises a plurality of uniformly distributed or non-uniformly distributed diffusion particles and a fluorescent powder. The flexible LED light source module of claim 1, wherein the flexible transparent substrate is a plastic substrate. The soft LED light source module of claim 1, wherein the flexible transparent cover is a high transparent plastic cover.