TWI658612B - Light-emitting diode structure capable of gaining light output performance - Google Patents

Abstract

A light emitting diode structure capable of gaining light output performance is a metal glass reflection layer provided in a light emitting diode (LED) structure to reflect the light emitted by the diode, thereby gaining the LED Light output to improve its efficiency.

Description

Light-emitting diode structure capable of gaining light output performance

The invention relates to a light-emitting diode structure capable of gaining light output efficiency. A metallic glass reflective layer is provided in a light-emitting diode (LED) structure to reflect the light emitted by the diode. Gain the light output of this LED to improve its efficiency.

In order to enhance the light-collecting and light-reflecting effect of the light-emitting diode (LED) and thereby improve the efficiency of the LED, a light-reflective layer is generally provided on the structure or base layer of the LED. The reflective layer can be plated with a metal reflective layer, including : Aluminum, Gold, Silver, Nickel, Tungsten, Titanium, Platinum, etc.

And more common users use aluminum coating as the reflective layer, such as disclosed in US Patent No. 9,406,837 B, which is based on an LED substrate coated with an aluminum coating, thereby forming a light reflective layer to enhance the LED Light exporter.

Only the use of aluminum metal as a reflective layer has the following disadvantages:

1. Generally, when aluminum is used as a reflective layer at the nanometer scale, its thickness is about 50 to 150 nanometers. At this time, aluminum is extremely active. When it comes into contact with air, it is immediately oxidized and blackened or atomized, and its reflectivity is lost , And greatly reduce the efficiency of LED.

2. In order to overcome the disadvantage of deteriorating the aluminum reflective layer due to oxidation, there is a plasma oxidation process. A small amount of inert gas, such as Kr, is used to perform plasma oxidation to form an aluminum reflective layer on the aluminum reflective layer. "Aluminum oxide" film (see Annex 2, U.S. Patent 7,331,695, column 9) to increase its corrosion resistance. Cost is particularly inappropriate in the context of fierce competition in this industry.

3. Even if the above aluminum oxide film can protect the aluminum reflective layer, the aluminum reflective film may still be oxidized (degraded) at the moment before the "plasma oxidation". At this time, the "cluster tool" ( cluster tool) (Annex 2, column 10) to prevent the possibility of oxidation (deterioration) of the aluminum reflective film. However, the process of this "cluster tool" is very complicated, resulting in costs and disadvantages.

In view of this, the inventor of this case has researched and innovated and revealed the light-emitting diode structure of the present invention that can gain light output efficiency.

An object of the present invention is to provide a light emitting diode structure capable of gaining light output performance. A metallic glass reflective layer is provided in a light emitting diode (LED) structure to reflect light emitted by the diode. In order to increase the light output of the LED to improve its efficiency.

1‧‧‧light-emitting diode

2‧‧‧ metallic glass reflective layer

3‧‧‧ Grassroots

Fig. 1 is a sectional view of a first embodiment of the present invention.

Fig. 2 is a sectional view of a second embodiment of the present invention.

Fig. 3 is a sectional view of a third embodiment of the present invention.

Fig. 4 is a sectional view of a fourth embodiment of the present invention.

Referring to FIG. 1, a light emitting diode structure capable of gaining light output efficiency according to the present invention includes: a light emitting diode (1, LED); a metallic glass reflective layer (2); and a base layer (3).

The light-emitting diode (1) generally refers to: a light-emitting diode, a light-emitting diode chip (LED chip), organic light emitting diode (OLED), etc., so as to form a package structure of a light emitting diode (package structure), which can be used for various light emitting, lighting, and optical display of the light emitting diode For optical applications, the present invention is not limited.

The metallic glass reflective layer (2) is sputtered, mounted or coated with metallic glass on the bottom of the light emitting diode (1), and is interposed between the light emitting diode (1) and the base layer. (3) between.

The metallic glass in the present invention generally refers to: metallic glass, liquid alloy, high entropy liquid alloy, amorphous alloy, etc., and is generally referred to as "metal glass", but the present invention does not limit the metals used Kind of glass.

The metallic glass of the present invention can be sputter-plated, plated, coated, adhered, shaped, or disposed on one or more faces of the light-emitting diode (1), or on one or more faces of the base layer (3). As shown in FIG. 1, the metallic glass reflective layer (2) is interposed between the light emitting diode (1) and the base layer (3), and the light of the light emitting diode (1) is reflected to the upper or peripheral direction. To gain the light energy output and efficiency of the light emitting diode (1).

As shown in FIG. 2, the metallic glass reflective layer (2) is placed on the bottom surface of the base layer (3). Of course, the base layer (3) should be made of a transparent or translucent material to play the metallic glass reflective layer (2). ) Reflection effect.

As shown in FIG. 3, the present invention includes: a light-emitting diode (1) is disposed under a base layer (3), and a metallic glass reflective layer (2) is cup-shaped, dish-shaped, frusto-conical, semi-circular The shape of the "lampshade", such as a sphere, is recessed below the "layer" formed by the diode (1) and the base layer (3), and the light is reflected or focused by the light emitting diode (1). . At this time, of course, the base layer (3) is preferably made of a transparent material.

As shown in FIG. 4, the "layer" of the light-emitting diode (1) and the base layer (3) is placed in a glass-shaped or bowl-shaped or frusto-conical shape of a metal-glass reflective layer (2). At the bottom to reflect the light from the light emitting diode (1) upwards.

The metallic glass reflective layer (2) shown in Figures 3 and 4 can actually be attached, glued, or placed on a reflector housing or support of the same shape to enhance its firmness and facilitate modeling or decorative patterns. The shaper. Or, the metallic glass reflective layer (2) and the supported reflector housing or support are molded, pressed, or integrated into a single body.

Because the present invention uses metallic glass as a reflective layer, it has the following advantages:

1. The metallic glass reflective layer (2) has strong anti-oxidation ability, and does not form a metal oxide on the surface of the reflective layer, thereby greatly reducing its reflection efficiency.

2. Once the metallic glass reflective layer is manufactured, it is unnecessary to plate a protective layer, which greatly reduces the production cost, greatly increases the process yield and production capacity, and improves the competitive advantage of the product.

3. Metal glass is resistant to scratches and has a strong anti-corrosion ability. It does not need to be eroded by atmospheric moisture or harmful pollutants, which can increase service life and reduce maintenance costs.

4. Metal glass has its easy processability, which is conducive to the molding of various package structure (artistic shapes). This is why modern optoelectronic products can beautify their artistic shapes every time they are monotonous, and integrate artistic elements into industrial products. In China, the aesthetic conception of the spiritual field beyond the material level is sublimated. This is because the metallic glass of the present invention can be easily processed and shaped with other LED components.

5. When the metallic glass reflective layer must also function as an electrode, it is no doubt because it is a good conductor of electricity.

Preferable examples of the present invention can be appropriately modified within the spirit and scope of the present invention. Decorations or changes are not limited by the present invention.

Claims (6)

A light emitting diode structure capable of gaining light output efficiency includes: a light emitting diode; a metallic glass reflective layer provided on at least one side or a bottom surface of the light emitting diode; and a base layer provided on the metallic glass reflection At least one side or bottom side of the layer is a structure that constitutes a light emitting diode. A light-emitting diode structure capable of gaining light output efficiency includes: a light-emitting diode; a base layer provided on at least one side or a bottom surface of the light-emitting diode; and a metallic glass reflective layer provided on at least the base layer One side or bottom side to constitute a light emitting diode structure. A light-emitting diode structure capable of gaining light output efficiency, comprising: a light-emitting diode provided on one surface of a base layer; and a metallic glass reflecting layer formed by cups, bowls, cones, hemispheres, etc. The shape is recessed below the laminated layer of the light-emitting diode and the base layer, and the light is reflected upward and outward, and condenses the light of the light-emitting diode. For example, a light-emitting diode structure capable of gaining light output efficiency in the third item of the patent application, wherein the light-emitting diode and the base layer are provided on the top surface or outside of the metal-glass reflective layer in the shape of the lampshade; the metal-glass reflective The layer reflects or condenses the light source projected by the light-emitting diode upward, outward. For example, a light-emitting diode structure capable of gaining light output efficiency in the third item of the patent application, wherein the light-emitting diode and the base layer are provided at the bottom of the recess of the metal-glass reflective layer in the shape of the lampshade; The body's light source reflects upwards, outwards or condenses. For example, the light-emitting diode structure capable of gaining light output performance in the scope of the patent application No. 1 or 3, wherein the base layer is made of transparent or translucent material.