TWM248028U - Assembled device of white-light LED - Google Patents

Description

M248028 IV. Creation Instructions (l)-[Technical Field of New Type] This creation is about a white light emitting diode combination device, and more about a light emitting device that can have both luminous efficiency and color rendering, and can flexibly use light. Powder white light emitting diode combination device. 77 [Prior art] At least white light is a multi-color mixed light 'that can be perceived by human eyes as white light, and includes mixed light of two or more wavelengths. For example, when the human eye is stimulated by red, blue, and green light at the same time, or when it is stimulated by blue and yellow light at the same time, it can be perceived as white light. Therefore, a semiconductor light-emitting device capable of emitting white light can be manufactured according to this principle. There are mainly four manufacturing methods of the conventional white-light semiconductor light-emitting device, which are described below. $

The first method uses three light-emitting diodes made of aluminum gallium indium phosphide (A1 lnGap), nitride (InGaN), and gallium phosphide (GaP) as materials to control the current passing through each light-emitting diode. And make it emit red, green and blue light respectively. The two light-emitting diode crystals are arranged in the same bulb (1 Mρ), and the three colors of light are mixed by a lens to generate white light. W The second method is to use InGaN and AlInGaP or Gap as a material to remove steam green light, and then mix to produce white light. The third method is the technology developed by Japan ’s Nichia Chemica D in 196. It uses an indium gallium nitride blue light-emitting diode in combination with an yttrium aluminum garnet-type fluorescent light that can be excited to emit yellow light. Powder to make a white light source. Because this method only requires a set of light-emitting diode chips, it can greatly reduce manufacturing costs. Nowadays, it is equipped with a fluorescent powder modulation technology

Page 6 M248028, the creative description has matured, the fourth blue-green three-color photodiodes mentioned above and the principle of overall color complementation (sunlight, 700 nm) class of eye-high optics whose color rendering is as long as the phosphor wavelength of white light. These fluorescence coefficients are not close to the best use of fluorescent materials [new intrinsic and innovative, and can determine the above habits (2), so existing products have been presented. One way is to use ultraviolet light emitting diodes (U V L E D) 'to excite red fluorescent powder to emit fluorescent light of different colors, and to produce white light after color mixing. The common disadvantage of the first and second methods is that when one of the different light-colored hairs fails, normal white light cannot be obtained, and the luminous efficiency is poor. Both the second and third methods use each other to generate white light, and the continuity of the spectral wavelength distribution is not as good as the real one. Therefore, after color light is mixed, it will appear in the visible light spectral range (400 nm ~ color unevenness, resulting in color saturation is relatively low). Low. Although people can ignore this phenomenon and only see white light, the color rendering property such as camera or camera is still substantially lower under the sense of some precision than the detector. The fourth method The disadvantage is that it uses a three-band visible light source to improve its color rendering. Therefore, three or more of them must be used. To use multiple fluorescent powders at the same time to make them emit different light, one of the prerequisites is The selected excitation light must be exactly absorbed by the powder, and the absorption of light of this wavelength by each fluorescent powder differs too much, and the quantum efficiency of light energy conversion needs to be as far as possible. These factors greatly limit the application The type of fluorescent material makes it difficult to select materials. The main purpose of the task is to provide a white light that can use both fluorescent efficiency and color rendering flexibility. Diode light combining means, known to alleviate the disadvantages of the white light emitting diodes.

M248028 4. Creation Instructions (3) " In order to achieve the above-mentioned purpose of creation, this creation provides a white light emitting diode combination device including at least two kinds of white light emitting units selected from the following groups. (A) red, blue and green White light-emitting unit consisting of three-color light-emitting diodes; (B) White light-emitting unit consisting of monitor light and yellow-green light-emitting diodes; (C) White-light emitting unit with blue light-emitting diodes and yellow phosphors; (D) UV The light emitting diode is a white light emitting unit with red, blue and green fluorescent powder. In other words, according to the white light emitting diode combination device created by this creation, there can be the following 11 combinations: A + B (white light emitting unit with red, blue and green three-color light emitting diodes and blue and yellow-green light emitting diodes The body is composed of white light emitting units B), A + C, A + D, ..., A + B + C, _ .. A + B + C + D. Therefore, the white light emitting diode combination device based on this creation can have both luminous efficiency and color rendering, and flexible use of fluorescent powder. In order to allow your reviewers to better understand the characteristics and technology of this creation, please refer to the following detailed description and drawings of this creation. However, the drawings are provided for reference and explanation only, and are not intended to limit the creation. [Embodiment] Referring to the first figure, it is a schematic diagram of a white light emitting diode combination device 10 according to the first preferred specific example of the creation. The white light emitting diode combination device 10 is used on an LCD backlight panel and includes a plurality of first white light emitting units 1 10, which are composed of red, blue and green three color light emitting diodes; a plurality of second white light The light emitting unit 120 is composed of blue and yellow-green light emitting diodes; a plurality of second white light emitting early elements 130 ′ are composed of a blue light emitting diode and yellow fluorescent powder; and a fourth white light emitting unit 140 By

M248028 4. Creation instructions (4) The ultraviolet light emitting diode is composed of red, blue and green phosphors. In the above specific examples, it should be noted that the white light emitting diode combination device 10 does not necessarily have to have all the white light emitting units Π0 to 140, but may have at least two of them. For example, the white light emitting diode combination device 10 of this creation may also include a group of first white light emitting units 11 0 (which is composed of red, blue and green three-color light emitting diodes) and a group of third white light emitting units 1 3 0 (composed of blue light emitting diode and yellow light emitting powder). Although the third white light emitting unit 1 3 0 has higher luminous efficiency, the absorption peak of the yellow light emitting powder may not be consistent with the blue light emitting diode; and the red, blue and green three color light emitting diodes can provide a wider light emission. Spectrum, so phosphors can be used more effectively. Referring to FIGS. 2A to 2C, there are an independent third white light emitting unit 130, an independent first white light emitting unit 11 0, and a white light emitting diode combination device 10 (which is based on this creation) It is composed of a group of first white light emitting units 110 and a group of third white light emitting units 130. The second A picture shows the light emission spectrum of the independent third white light emitting unit 130. It can be seen that there is a deficiency in the red light part, so it will affect the color rendering of the light source. The second diagram B is the light emission spectrum of the independent first white light emitting unit 110. Although it has better color rendering, it has poor efficiency and requires large power consumption to emit illuminance. Figure 2C is the light emission spectrum of the white light emitting diode combination device 10 based on this creation. It can be seen that it has quite excellent color rendering and emits light with low power consumption. In order to further control the color rendering of the white light emitting diode combination device 10, a control unit may be provided in the white light emitting diode combination device 10

M248028 4. Creation Instructions (5) 1 6 0. As shown in the third figure, it is a schematic diagram illustrating that the first white light emitting unit n 0 of the white light emitting monopole combination device 10 is controlled by the control unit 160. The first white light emitting unit Π0 includes a plurality of r GB light emitting diode elements A — 1 1 OH, and each of the RGB light emitting diode elements includes red, blue, and green three light emitting diodes 0, and are respectively electrically connected. To the red light control part 16 0 A of the control unit 16 0, the green light control part 16 0 B and the blue light control part 16 0 c. As shown in Figures 4A and 4b, the anode of each light-emitting diode in the Rgb light-emitting diode element 110A-110H can be connected to the red light-controlling part i 60A through the wires A, β, and c. Corresponding contacts of green light control section 160B and blue light control section 160C; RGB light-emitting diode element ii 〇a — 1 The cathode of each light-emitting diode in the anode can be connected through wiring 〇, E and F are connected to the corresponding contact points of the red light control part 160 A, the green light control part i 6 〇β and the blue light control part 601 c. Therefore, each of the R q light-polar element 11 can be controlled by the red light control part 60a, the green light control part 160B, and the blue light control part 6o of the control unit i60. Α — η is the driving current of each light-emitting diode, which in turn controls the temperature of each RG Β light-emitting diode element η〇Α-11〇Η. Coincidentally, it can also be combined in a white light-emitting diode. A control unit (not shown) is set up in the third white light-emitting unit 130 of 10 to control the color temperature of the third white light-emitting unit 130. — The white light-emitting diode combination of this creation is shown in the fifth figure. Device 5〇 庑 = Another schematic diagram on the back panel, the white light emitting diode combination device is installed on the-side of a backlight plate (product number), and includes a plurality of-white light emitting units 5 1 0 ' It is composed of red, blue, and green three-color light-emitting diodes. Plural number M248028. 4. Creative instructions (6) Two white-light emitting units 520, which are composed of blue and yellow-green light-emitting diodes. 530, which is composed of blue light-emitting diode and yellow light-emitting phosphor And a plurality of fourth white light emitting units 540, which are composed of ultraviolet light emitting diodes and red, blue and green phosphors. Similarly, the white light emitting diode combination device 50 does not necessarily have to have all the white light emitting units. 510-540, at least two of them can be used. The sixth and seventh figures are schematic diagrams of the white light emitting diode combination device used in the creation of this creation. The white light emitting diode combination device 60 and 70 can be presented in multiple rows or single rows. The schematic diagram of the white light emitting diode combination device shown in Figure 8 applied to a flashlight is based on the above three specific examples. The combination device does not necessarily have to have all the white light emitting units, but may have at least two of them. In summary, the white light emitting diode combination device of this creation can have both luminous efficiency and color rendering, and can The flexible use of fluorescent powder is a rare new creative product, which is extremely industrially applicable, novel and progressive, and fully meets the requirements for new patent applications. Please make a detailed investigation and grant the patent in this case to protect the rights and interests of the creator. However, the above is only a preferred embodiment of this creation, and all modifications and changes made in accordance with the scope of the patent application for this creation , All should be covered by this creative patent.

M248028 Brief description of the diagram (1) Illustrated diagram: The first diagram is a schematic diagram of a white light emitting diode combination device according to the first preferred specific example of this creation; the second A to the second C are diagrams for three different light sources Spectral measurement pattern; the third figure is a schematic diagram illustrating the creative control unit; the fourth A and the fourth B are schematic diagrams further explaining the creative control unit, and the fifth figure is the second preferred specific example based on the creative Schematic diagram of a white light emitting diode combination device;

Figure 6 is a schematic diagram of a white light emitting diode combination device according to the third preferred embodiment of the present invention; Figure 7 is a schematic diagram of a white light emitting diode combination device according to the fourth preferred embodiment of the present invention; Figure 8 is a schematic diagram of a white light emitting diode combination device according to the fifth preferred embodiment of the present invention. (II) Component symbol description: 10, 50, 60, 70, 80 0 white light emitting diode combination device

110, 120, 130, 140 White light emitting unit 510, 5 2 0, 5 3 0, 540 White light emitting unit 610, 6 2 0, 6 3 0, 640 White light emitting unit 710, 72 0, 7 3 0, 740 White light emitting Unit 810, 82 0, 8 3 0, 840 White light emitting unit 1 6 0 Control unit 110A-110H RGB light emitting diode

Page 12 M248028 Schematic description 1 6 〇 A red light control part 1 6 〇 B green light control part 1 6 0 C blue light control part

Claims (1)

M248028 5. Scope of patent application 1. A white light emitting diode combination device comprising at least two kinds of white light emitting units selected from the following groups; (A) a first white light emitting light consisting of red, blue, and green three-color light emitting diodes Unit; (B) a second white light emitting unit composed of blue and yellow-green light emitting diodes; (C) a third white light emitting unit with blue light emitting diodes and yellow phosphors; (D) an ultraviolet light emitting diode with red The fourth white light emitting unit of the blue-green fluorescent powder. 2. For example, the white light emitting diode combination device of the first patent application scope further includes a control unit to control the brightness of each light emitting diode in the white light emitting diode combination device. 3. For example, the white light emitting diode combination device of the first patent application range, wherein the red, green and blue light emitting diodes of the first white light emitting unit are respectively composed of aluminum gallium indium phosphide (AlInGaP), gallium nitride (InGaN) ) And phosphating (GaP) are made of materials. 4. For example, the white light emitting diode combination device of the first patent application range, wherein the white light emitting diode combination device includes a white light emitting unit composed of red, blue and green three color light emitting diodes and a blue light emitting diode. A white light emitting unit composed of a polar body and a yellow fluorescent powder. 5. The white light emitting diode combination device according to item 4 of the scope of the patent application, wherein the red, green and blue light emitting diodes of the first white light emitting unit are respectively made of indium phosphide (AlInGaP) and gallium nitride (InGaN). Made with Ga P. 6. The white light emitting diode combination device according to item 2 of the patent application, wherein each control unit has a memory unit to store driving current data for each light emitting diode. Page 14 M248028 5. Scope of patent application 7. If the patent application strictly encloses the white light emitting diode combination device, the control unit is a control IC. 8. If the white light emitting diode combination device of the first scope of the patent application, its f can be applied to lighting lamps and LCD backlight panels. Page 15