CN104835901B - Ultrathin flexible double-side LED light source based on secondary optical design - Google Patents

Abstract

The invention provides an ultra-thin flexible double-sided light-emitting LED light source based on secondary optical design, which includes: a flexible substrate, several LED chips, and a fluorescent film; a first light-emitting circuit is arranged on the flexible substrate, and several LED chips, a number of LED chips are distributed on the flexible substrate in the form of an array, and are electrically connected with the first light-emitting circuit; the fluorescent films are respectively arranged on both sides of the flexible substrate, and several LED chips are sealed, and the fluorescent films on both sides The surface of the surface is treated or pressed with micro-lenses, and the fluorescent films on both sides are respectively provided with a second light-emitting circuit, the second light-emitting circuit is electrically connected to a number of LED chips, and wires are drawn from the fluorescent films on both sides. . The LED light source of the invention has good flexibility, wide application range and small thickness. In addition, the LED light source of the present invention expands the light-emitting area by forming double-sided light-emitting light paths on the fluorescent film, and the secondary optical design on the fluorescent film improves the luminous efficiency of the LED light source.

Description

Ultra-thin flexible double-sided light-emitting LED light source based on secondary optical design

technical field

The invention relates to the technical field of lighting, in particular to an ultra-thin and flexible double-sided light-emitting LED light source based on secondary optical design.

Background technique

A light-emitting diode (Light-Emitting Diode, LED) is a semiconductor electronic component capable of emitting light. This electronic component appeared as early as 1962. In the early days, it could only emit red light with low luminosity. Later, other monochromatic light versions were developed. Today, the light that can be emitted has covered visible light, infrared rays and ultraviolet rays, and the luminosity has also increased to a considerable extent. of luminosity. And the use is also used as indicator lights, display panels, etc. from the beginning; with the continuous advancement of technology, light-emitting diodes have been widely used in displays, TV lighting decoration and lighting.

However, the existing light sources using light-emitting diodes often have small light-emitting areas, poor flexibility, and low luminous efficiency, which cannot fully meet people's needs for use.

Therefore, in order to solve the above problems, it is necessary to propose further solutions.

Contents of the invention

The object of the present invention is to provide an ultra-thin flexible double-sided light-emitting LED light source based on secondary optical design, so as to overcome the deficiencies in the prior art.

In order to achieve the above purpose, the present invention provides an ultra-thin flexible double-sided LED light source based on secondary optical design, which includes: a flexible substrate, several LED chips, and a fluorescent film;

A first light-emitting circuit is arranged on the flexible substrate, and the plurality of LED chips are also arranged on the flexible substrate. making electrical connections;

The fluorescent films are respectively arranged on both sides of the flexible substrate, and seal the plurality of LED chips, the surfaces of the fluorescent films on both sides are surface treated or pressed with microlenses, and the fluorescent films on both sides are There are also second light emitting circuits respectively arranged on the top, and the second light emitting circuits are electrically connected with the plurality of LED chips, and wires are led out from the fluorescent films on both sides.

As an improvement of the ultra-thin flexible double-sided light-emitting LED light source based on the secondary optical design of the present invention, the first light-emitting circuit is arranged on the above-mentioned flexible substrate by means of pressing, printing or sputtering.

As an improvement of the ultra-thin flexible double-sided light-emitting LED light source based on the secondary optical design of the present invention, the plurality of LED chips are arranged on the flexible substrate in a front-mount or flip-chip manner.

As an improvement of the ultra-thin flexible double-sided light-emitting LED light source based on secondary optical design of the present invention, the fixing methods between the LED chips and the flexible substrate can be: conductive glue, reflow soldering, and eutectic soldering.

As an improvement of the ultra-thin flexible double-sided light-emitting LED light source based on the secondary optical design of the present invention, the thickness of the LED chip is 100-150 um.

As an improvement of the ultra-thin flexible double-sided light-emitting LED light source based on the secondary optical design of the present invention, the thickness of the LED light source is 300-350um.

As an improvement of the ultra-thin flexible double-sided light-emitting LED light source based on secondary optical design of the present invention, the flexible fluorescent substrate includes fluorescent powder or quantum dots, and the flexible fluorescent substrate also includes one of the following components: PET, PI, or silica gel.

Compared with the prior art, the beneficial effects of the present invention are: the ultra-thin flexible double-sided light-emitting LED light source based on the secondary optical design of the present invention has good flexibility, wide application range, and small thickness. In addition, the LED light source of the present invention expands the light-emitting area by forming double-sided light-emitting light paths on the fluorescent film, and the secondary optical design on the fluorescent film improves the luminous efficiency of the LED light source.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments described in the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic plan view of a specific embodiment of the ultra-thin flexible double-sided light-emitting LED light source based on the secondary optical design of the present invention.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

As shown in FIG. 1 , the ultra-thin flexible double-sided light-emitting LED light source based on the secondary optical design of the present invention includes: a flexible substrate 10 , several LED chips 20 , and a fluorescent film 30 .

The flexible substrate 10 is used to carry the plurality of LED chips 20, and at the same time, it is made of flexible materials, so that the LED light source of the present invention has good flexibility. Specifically, a first light-emitting circuit is disposed on the flexible substrate 10 , and the first light-emitting circuit can be disposed on the flexible substrate by means of pressing, printing, or sputtering. The plurality of LED chips 20 are disposed on the flexible substrate 10 , and the plurality of LED chips 20 are distributed on the flexible substrate 10 in an array form. Several LED chips 20 are electrically connected to the first light-emitting circuit at the same time, and the fixing methods between the several LED chips 20 and the flexible substrate 10 can be: conductive glue, reflow soldering, eutectic soldering, etc. In addition, the plurality of LED chips 20 can be disposed on the flexible substrate 10 in a front-mount or flip-chip manner.

Furthermore, in the above embodiment, the thickness of any LED chip is 100-150um, and the thickness of the LED light source of the present invention is generally controlled at 300-350um, so as to realize the ultra-thin design of the LED light source of the present invention.

The fluorescent films 30 are arranged on both sides of the flexible substrate 10 respectively, and several LED chips 20 can emit light from the fluorescent films 30 on both sides, thereby forming a double-sided light emitting path with a larger light emitting area. The fluorescent film 30 includes fluorescent powder or quantum dots, the flexible fluorescent substrate includes fluorescent powder or quantum dots, and the flexible fluorescent substrate further includes one of the following components: PET, PI, or silica gel. Therefore, the fluorescent film 30 may include fluorescent powder doped with PET, PI, or silica gel, or may include quantum dots doped with PET, PI, or silica gel.

The fluorescent films 30 on both sides seal the LED chips 20 disposed on the flexible substrate 10 . At the same time, the fluorescent film 30 is redesigned by performing surface treatment on the surface of the fluorescent film 30 on both sides or pressing the microlens, so as to improve the luminous efficiency.

Further, the fluorescent films 30 on both sides are respectively provided with second light-emitting circuits, and the second light-emitting circuits are electrically connected to the plurality of LED chips 20, and the fluorescent films on both sides are also connected to each other. Wires are drawn out.

In summary, the ultra-thin flexible double-sided light-emitting LED light source based on the secondary optical design of the present invention has good flexibility, wide application range, and small thickness. In addition, the LED light source of the present invention expands the light-emitting area by forming double-sided light-emitting light paths on the fluorescent film, and the secondary optical design on the fluorescent film improves the luminous efficiency of the LED light source.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (7)

1. A kind of 1. ultrathin flexible double-side LED light source based on secondary optical design, it is characterised in that the LED light source bag Include：Flexible base board, some LED chips, fluorescent film；

   The first illuminating circuit is provided with the flexible base board, some LED chips, institute are additionally provided with the flexible base board State some LED chips to be distributed in the form of an array on the flexible base board, and be electrically connected with first illuminating circuit；

   The fluorescent film is respectively arranged at the both sides of the flexible base board, and some LED chips is sealed, described two The surface of the fluorescent film of side is surface-treated or is suppressed with lenticule, and second is also respectively provided with the fluorescent film of the both sides Illuminating circuit, second illuminating circuit are electrically connected with some LED chips, from the fluorescent film of the both sides also Lead to wire.
2. 2. the ultrathin flexible double-side LED light source according to claim 1 based on secondary optical design, its feature exist In first illuminating circuit is arranged at by way of suppressing, printing or sputter on above-mentioned flexible base board.
3. 3. the ultrathin flexible double-side LED light source according to claim 1 based on secondary optical design, its feature exist In some LED chips are arranged on the flexible base board by the way of formal dress or upside-down mounting.
4. 4. the ultrathin flexible double-side LED light source according to claim 1 based on secondary optical design, its feature exist In the fixed form between some LED chips and the flexible base board can be：Conducting resinl, Reflow Soldering, eutectic weldering.
5. 5. the ultrathin flexible double-side LED light source according to claim 1 based on secondary optical design, its feature exist In the thickness of the LED chip is 100~150um.
6. 6. the ultrathin flexible double-side LED light source according to claim 1 based on secondary optical design, its feature exist In the thickness of the LED light source is 300~350um.
7. 7. the ultrathin flexible double-side LED light source according to claim 1 based on secondary optical design, its feature exist Include fluorescent material or quantum dot in, the flexible fluorescence substrate, the flexible fluorescence substrate also comprise the following components in one kind： PET, PI or silica gel.