TWI382134B - Multi-color light emitting diodes array structure with uniformity color mixing - Google Patents

Description

Uniform color mixing multi-color light emitting diode array structure

The invention relates to an array of multi-color light-emitting diodes, in particular to a multi-color light-emitting diode array structure with uniform color mixing.

In recent years, the luminous efficiency of Light Emitting Diodes (LEDs) has been increasing, so the application is more and more extensive, including traffic lights, street lights, automotive lighting, outdoor lighting and some common electronic products. LEDs are characterized by power saving, light weight, long life and high durability. More and more products are gradually introducing new light sources. Especially for LED applications in lighting and displays, it has gradually replaced the common light source.

In order to generate white light, the light output of the light-emitting diodes of different color lights is currently mixed into white, and the white light output is currently produced by mixing red (R, R), green (Green), and blue (Blue) LEDs. Mainly. Among them, determining the quality of white light output (white light purity, brightness, etc.), the arrangement of the color light-emitting diodes has a crucial influence.

Please refer to the fourth and fifth figures. At present, in the technique of mixing white light of three different color light-emitting diodes of red, green and blue, it also includes many different combinations of combinations and combinations, in which squares (A, such as The fifth figure), the triangle (60, as shown in the fourth figure) or the line is mainly arranged. However, the white light produced by the mixing of the foregoing alignment methods is of poor quality, which often causes problems such as ribbon, poor uniformity of white light, and poor brightness value.

In order to solve the technical problem that the white light output generated by the multi-color light-emitting diodes is mixed and mixed side by side, the white light output is easy to produce ribbon, uniformity and brightness due to poor alignment planning, the present invention is developed by the Breault Research Organization. The ASAP optical software analysis finds the optimal arrangement of the color light-emitting diodes, which not only can obtain good color light output, but also can have a good brightness surface to achieve the purpose of improving white light color mixing quality.

In order to solve the foregoing problems and achieve the object of the invention, the present invention provides a uniform color mixing multi-color light emitting diode array structure, comprising a plurality of adjacent array of array periodic units, each array period unit comprising a plurality of first color light emitting two The polar body, the plurality of second color light emitting diodes and the plurality of third color light emitting diode circuits respectively generate different color light outputs, and the light outputs of the different colors are mutually mixed to generate another color light output, each array period unit Each of the first color light emitting diodes, the second color light emitting diodes, and the third color light emitting diodes that generate the same color light output are not adjacent to each other.

The first color light emitting diodes, the second color light emitting diodes, and the third color light emitting diodes are arranged in a hexagonal shape, and the array periodic cells arranged in a hexagonal shape include six sides. Each side contains three different light emitting diodes.

Wherein, the first color light emitting diodes, the second color light emitting diodes, and the third color light emitting diodes are arranged in a hexagonal shape, and the hexagonal array periodic unit includes six sides, each of which has six sides. The sides contain two light-emitting diodes that are different from each other.

Wherein, the first color light emitting diodes, the second color light emitting diodes, and the third color light emitting diodes are arranged in a square shape of the nine squares, and the array of the nine squares is a square. The periodic unit includes four sides, each of which has four sides. The sides contain three different light emitting diodes.

The compensation unit is a 2×2 LED array, and the compensation unit comprises a first color light emitting diode, two closely arranged A second color light emitting diode and a third color light emitting diode.

Wherein, the compensation unit of the center space of each array period unit is a third color light emitting diode.

The first color light emitting diode outputs red light, the second color light emitting diode outputs green light, and the third color light emitting diode outputs blue light.

Thereby, the array period unit of the present invention can produce a very uniform white light mixing effect, and if a compensation unit is added, the brightness can be further improved.

Please refer to the first to third figures, which are the multi-color light-emitting diode array structure of the uniform color mixing of the present invention, which comprises a plurality of adjacent array array periodic units (10A, 10B, 10C) and a plurality of compensation units (20A). 20C).

Each of the array period units (10A, 10B, 10C) includes a plurality of first color light emitting diodes (R), a plurality of second color light emitting diodes (G), and a plurality of third color light emitting diodes ( B) respectively generating different color light outputs, and the light outputs of different colors are mixed with each other to produce another color light output (ie, ternary color), and the first color light emitting diode (R) of the embodiment can be output. The red light, the second color light emitting diode (G) can output green light, and the third color light emitting diode (B) can output blue light.

Each of the array period units (10A, 10B, 10C) generates a first color light emitting diode (R), a second color light emitting diode (G), and a third color light of the same color light output. The light emitting diodes (B) are not adjacent to each other, and the first color light emitting diodes (R), the second color light emitting diodes (G), and the third color lights are respectively subjected to technical analysis results of the ASAP software. The arrangement of the light-emitting diodes (B) is hexagonal (as shown in the first figure, 10A), hexagonal (as shown in the second figure, 10B) or squared outside the square (as shown in the third figure, 10C).

As shown in the first figure, the array period unit (10A) arranged in a hexagonal shape includes six sides, each side including three mutually different light emitting diodes.

As shown in the second figure, the hexagonal array period unit (10B) includes six sides, each side comprising two mutually different light emitting diodes.

As shown in the third figure, the array period unit (10C) which is extraordinarily square is composed of four sides, and each side includes three mutually different light emitting diodes.

In order to compensate for the brightness and color uniformity of the array period units (10A, 10C), the compensation unit (20A, 20C) can be placed at the center of the array period unit (10A, 10C), the compensation unit (20A, 20C) is a 2x2 light emitting diode array (20A) or a third color light emitting diode (B), as shown in the first figure, in the central space of the array period unit (10A) arranged in a hexagonal shape The compensation unit (20A) is a 2x2 LED array comprising a first color light emitting diode (R), two second color light emitting diodes (G) and a first Three-color light-emitting diode (B).

As shown in the third figure, the compensation unit (20C) disposed in the center space of the array period unit (10C) which is square in a square shape is a third color light-emitting diode (B).

(10A, 10B, 10C). . . Array cycle unit

(20A, 20C). . . Compensation unit

(R). . . First color light emitting diode

(G). . . Second color light emitting diode

(B). . . Third color light emitting diode

The first figure is a schematic view of a first embodiment of the invention.

The second figure is a schematic view of a second embodiment of the present invention.

The third figure is a schematic view of a third embodiment of the present invention.

The fourth figure is a schematic diagram of an existing white light mixed color LED array.

The fifth figure is a schematic diagram of another conventional white light mixed color LED array.

(10A). . . Array cycle unit

(20A). . . Compensation unit

(R). . . First color light emitting diode

(G). . . Second color light emitting diode

(B). . . Third color light emitting diode

Claims (7)

A uniform color mixing multi-color light emitting diode array structure comprising a plurality of adjacent array array periodic units, each array period unit comprising a plurality of first color light emitting diodes and a plurality of second color light emitting diodes And a plurality of third color light emitting diode systems respectively generate different color light outputs, and the light outputs of the different colors are mixed with each other to generate another color light output, and each of the array period units can generate the first color light output. The color light emitting diode, each of the second color light emitting diodes, and each of the third color light emitting diodes are not adjacent to each other. The uniform color mixing multi-color light emitting diode array structure according to claim 1, wherein each of the first color light emitting diodes, the second color light emitting diodes, and the third color light emitting diodes The array periodic cells arranged in a hexagonal shape and arranged in a hexagon shape include six sides, and each side includes three mutually different light emitting diodes. The uniform color mixing multi-color light emitting diode array structure according to claim 1, wherein each of the first color light emitting diodes, the second color light emitting diodes, and the third color light emitting diodes Arranged in a hexagonal shape, the hexagonal periodic cell comprises six sides, each side comprising two mutually different light emitting diodes. The uniform color mixing multi-color light emitting diode array structure according to claim 1, wherein each of the first color light emitting diodes, the second color light emitting diodes, and the third color light emitting diodes Arranged in the square of the square of the nine squares, the array of cells in the square is extraordinarily square. The periodic unit consists of four sides, each of which contains three different light-emitting diodes. For example, in the uniform color mixing multi-color light-emitting diode array structure described in claim 2, a compensation unit is disposed at the center of each array period unit, and the compensation unit is a 2×2 light-emitting diode. In the array, the compensation unit comprises a first color light emitting diode, two second color light emitting diodes and a third color light emitting diode arranged closely. For example, in the uniform color mixing multi-color light-emitting diode array structure described in claim 4, a compensation unit is disposed in a central color space of each array period unit as a third color light-emitting diode. The uniform color mixing multi-color light emitting diode array structure according to claim 1 or 2 or 3 or 4 or 5 or 6, wherein the first color light emitting diode outputs red light, and the second color light emits light The diode outputs green light, and the third color light emitting diode outputs blue light.