TWI228837B - Light emitting device - Google Patents

Abstract

A light emitting device is characterized in including: at least one blue light semiconductor as a blue light emitting light source; at least one red light semiconductor as a red light emitting light source; and a fluorescent layer formed by uniformly mixing a fluorescent powder with a transparent glue. The fluorescent layer can be adhered to the blue light semiconductor and the red light semiconductor. The blue light and the red light are mixed, the blue light and the red light have different wavelengths and are emitted from the blue light semiconductor and the red light semiconductor respectively, the fluorescent layer is mainly excited by the blue light, and emits a light with a wavelength different from the wavelengths of the blue light and the red light.

Description

1228837

According to the invention, the two-color fluorescent layer was previously described as "pure light with blue light generated by different sources, which is excited by different wavelengths. The technical field belongs to: I provides a light-emitting device, specifically-a kind of M, red light Because one or more optical semiconductors are used to excite green or yellow :: the light layer emits light with a wavelength different from the two wavelengths of blue and red.? A true light emitting device, a typical example. Taiwan Announcement No. 3 8 3 5 08 No. "No., No. No." patent case, which only uses a single blue light carcass, and uses the emitted blue light to excite the yellow fluorescent layer. Production = white light manifestation Because only a single wavelength of light is mixed with some unglazed, its color rendering is poor, that is, white light is not distorted. ^ Announcement No. 3 8 5 0 6 new white LED patent case, it has a single The UV semiconductor is used as a light source to excite a fluorescent layer composed of red, green, blue, > GB) two-color phosphors to generate white light. = It uses a single-type ultraviolet light source, the material light will cause the current flooding%: the damage of the oxygen resin structure, will cause the white light to have the problem of light attenuation. #Excitation of white light is not strong. Based on the above, how to create a light-emitting device with high brightness and color rendering is the subject studied in this case. Summary of the Invention: The reason is that the present invention is to provide a light emitting device, which uses two or more semiconductors of blue light and red light as two color light sources to excite green or

1228837 V. Description of the invention (2) Yellow fluorescent layer to produce white light with good index and high efficiency ~ ^ (c〇l〇r rendering First, please blame the reviewer for the 3rd and the first color appearance The light emitting device includes the following features. As shown in FIG. 1, the present invention provides at least one blue light semiconducting device and at least one red half light source as a blue light emitting light source. The fluorescent layer 30 is made of fluorescent light. The powder plus ^ ^ is used as a red light source; the light layer 30 can be glued on: ^, and gelatin is evenly mixed. On this screen, blue light semiconductors 10 and 20 are different from light and red light semiconductors. The wavelength of the light _ 2 〇 and two colors of two colors excite the camping light layer 30, and: camp ==: which mainly uses blue light to wait for different wavelengths of light. Θ30 ^ The output wavelength and blue and red light are based on the aforementioned main factors. Blue, red 弁 -ben, tower ~ &'; /, / 氺 umbrella in the middle fluorescent layer 30, address, and the light source excited by the industrial light source should be defined by the human eye It is white light or tends to be white:;, 'λ The light from this mouth can be stimulated by the main chiral light according to the foregoing The phosphors with a wavelength between 50 and 30 in the light layer 30 are affected by 摅, +, and V + U 0 ~ 5 8 5 nm. According to the main characteristics of other light, the wavelength of 苴 is about 360 ' , Ma Xian + ^ Blue 10 issued by the body 10, * p ^ 8 0 nm 'red light semiconducting, output, .. I think 5 8 5 ~ 78_.… Body 20 issued according to the main characteristics of the other features Beans are aluminum garnet series (Ytt, θ 3 〇 Fluoro powder / 0 mn 4, 11 Aluminium Garnet) ^: 摅 Λ 酸盐 蝶 酸盐 11 (Bx0,) material composition. Salt basis is described Main features, among which blue light semiconductor 10 and red light half Page 1228837 V. Description of the invention (3) Conductor 2 0 can be connected to one can be filled according to the conductor 2 0 Fluorescent layer 3 The fluorescent light can be fluorescent depending on the material The powder is made of Ce3 +); the fluorescent powder is made of fluorescent powder by the device shown in the figure, at least one of which is at least one fluorescent layer 3 3 0 / is a transparent adhesive layer, in which the output wavelength and 0 are transmitted out, to be implemented Layer 3 〇 The aforementioned main can be connected to the main 0 and filled in the recessed layer 30 and the main following composition: As shown in um three, the system features include: The above blue light is more than the red light. 0 / The blue light is semi-conductive by the fluorescent light. 70 The fluorescent blue light is used to stimulate the blue light. The red light makes the different definition as another way: Reflective cover. In the groove 5 2 of 50, the groove 〇 features, among which the blue light semiconductor 10 and the red lead frame 6 0 are preset in the groove 6 2 in the groove 6 2, a bulb-shaped transparent resin lead frame 60 0 upper end package Covered and covered. Features, in which one or a combination of two or three kinds of fluorescent light in the fluorescent layer 30 is selected and contains an aluminum garnet series of Y and A1 (YAG: Stone Extraction System (YAG: EU2 + / 3 +);) Element-activated pomegranate series (YAG: Tb3 +) Another embodiment of this case is to provide a semiconductor 1 0 as a light source for blue light emission, and a semiconductor 20 as a light source for red light emission, plus a transparent glue, which is uniformly mixed. The body 10 is packaged and encapsulated; layer 30> and the red semiconductor 20 are packaged with a fluorescent layer 30, so that the fluorescent layer 30 has two different wavelengths of light, and the wavelength of the transparent glue is different from that of blue and red light. Light of mixed wavelengths appears in light. In the light half, 6 4 powder use: luminescent layer cover / hair layer 7 through

1228837 V. Description of the invention (4) (1). As shown in Figure 1, the blue light is connected to a reflective cover 5 2 0. The positive and negative conductive frames 4 2, 4 4 1 2, 1 4 are connected to the left and right respectively. Rack 4 2 circuits. Fluorescent layer 3 0 YAG) or silicate

Ce3 +, YAG: Or when these 5 0 0 ～ 5 yellow light, respectively, among blue light, red light half 5 8 5 ～ 7 light (B, R (as shown in the fluorescent layer 3 〇 (B) , Red), the different light (ie, the 8 5 nm color of the EU2 + / 3 + material of the human eye. 'Is produced by R and its photoconductor 2 8 0 nm) are shown to each other), the green light (R) Waves of light, green light G are visible in the grooves 52 of the semiconductor 1 〇 and the red light semiconductor 2 〇 respectively, wherein the red light semiconductor electrical pins 2 2 and 24 are connected to the two blue light semiconductor 1 〇 The conductive pins are connected to the two conductive frames 42 and 44. The two and four are insulated to form a fluorescent powder in the electrical system. The aluminum garnet (SmOn4_) or borate (Bx〇y3) -) In terms of material steps, phosphors can choose one or two of YAG :, YAG: Tb3 +, or a combination of them. The wavelength of the light of the phosphor layer 30 is between 'green or yellow', or green and blue semiconductor 1 〇 and red light semiconductors 〇 blue and red light sources, as shown in Figure 4, the source wavelength is between 3 6 0 ~ 4 8 0 nm, the red light R light source The wavelengths are in between. When the two are independent blue and red, they are emitted outward and pass through the reflection cover 50, and the inner wall surface 5 3 reflects the light, which is an excited color or a yellow labor powder. It produces light with different wavelengths than blue light (that is, the green light G has a length between 5 1 0 and 5 7 nm, and it does not mix with the blue and red light (B, r) wavelengths), which is defined as White light W (as shown in Figure 4

Page 8 1228837 V. Description of the invention (5)). Since the (B, R) has a fluorescent layer of 30 degrees and color rendering (2), as shown in FIG. 3, the blue light is filled and coated on the fluorescent blue light semiconductor 3 0 / the fluorescent light and the blue light When mixed, the layer 70 appears (3) · In this case, the wavelength of the non-blue and red semi-conductive light is input; the wavelength is 570 nm, and the fluorescence layer light (such as orange, which changes the length of the camp light, can be determined ( 4) As shown in Figure 2, the white frame of the wire frame 6 〇 packaged with white light W has high emission and better fluorescence in the white system. This is the semiconductor 1 light layer 3 0 1 0 emitting light layer 3 0 and red light. Seen and emitted by people. The same height, low body 10, such as red light layer 30 phosphor powder 30 will emit light). The fluorescent layer 3 of the layer 30 is transparent in this case, and the generation is caused by two independent ones to excite the characteristics of green or yellow south, whereby there can be powder 'to reach three wavelengths of light. In another implementation, the fluorescent layer 3 is a transparent colloid 20, and the blue light emits another wavelength and is mixed with the blue wavelength, so that the three-colored 0 package and the light source of the red semi-conductive blue light are defined as a kind of blue and red light. The fluorescent layer is mixed to highlight 0 due to the excitation of the efficiency. The single layer 70 can be refilled, thereby exciting the fluorescent layer and red light with different wavelengths and different currents from the transparent glue. Changing the luminous intensity of 2 0 and affecting the blue and red R can be changed to the wavelength of the fluorescent powder between orange red and red. If the blue and red (B, R) two light sources excite another about 5 9 0 The wavelength of light with a wavelength of nm wavelength and the color of the light emitted by wave 0 of the blue and red light source. Bright resin 6 4 connects the fluorescent layer 30 and the dominant blue and red semiconductors 10 and 20.

1228837 V. Description of the invention (6) Feet 2 2, 1 2, 1 4 are connected to the left and right lead frames 6 6 and 6 8 respectively to form an electrical circuit. The fluorescent layer 30 is excited by the blue and red light sources, and emits another light having a wavelength different from that of the blue and red light, and is emitted from the transparent resin 64. In summary, this case uses two light sources with different wavelengths and active light emission to excite the phosphors in the fluorescent layer to further generate light with different wavelengths from blue and red. Such light has excellent color rendering and brightness enhancement. The applicant has already possessed the requirements for invention, and the applicant has submitted an application in accordance with the law.

Page 10 1228837 Brief Description of Drawings The first drawing is a sectional view 曱 of an embodiment of the present invention. The second figure is a sectional view B of the embodiment of the present invention. The third figure is a sectional view C of the embodiment of the present invention. The fourth figure is a schematic plan view of a mixture of blue, red, and green light wavelengths to display white light. Component number: Blu-ray semiconductor—10 pins ----- 1 2, 1 4

Red semiconductor-2 0 pins-22, 24 fluorescent layer-3 0 fluorescent layer-3 0-fluorescent layer-31, 32, 33, 34 conductive Shelf ---- 42,44 Reflective cover ---- 5 0 Groove ----- 5 2 Inner wall surface one by one 5 3

Lead frame ---- 6 0 Groove ----- 6 2 Transparent resin --- 64 Left lead frame --- 66 Right lead frame --- 6 8 Transparent adhesive layer --- 7 0

Page 11 1228837 Schematic description of white light ----- w

Green Light ----- G

Blu-ray ----- B

Red light ----- R ιιηιι PAGE 12

Claims (1)

1228837 6. Scope of patent application 1 'A light-emitting device' characterized by including: at least one or more blue semiconductors as a blue light source; at least one or more red semiconductors as a red light source; the fluorescent layer is composed of Fluorescent powder and transparent glue are evenly mixed. The fluorescent layer can be glued on the blue light semiconductor and red light semiconductor. The two light sources of two colors, blue light semiconductor and red light semiconductor, emit blue and red with different wavelengths. Light is mixed, in which the fluorescent layer is mainly excited by blue light, and the fluorescent layer emits light with a wavelength different from that of blue light and red light. 2. The light-emitting device according to item 1 of the declared patent scope, in which the fluorescent powder in the fluorescent layer is mixed with the light excited by the blue and red light sources and the blue and red light, which can be defined by the human eye. White light or light tending to white. 3. The light-emitting device according to item x in the scope of the patent application, wherein the light-excitation wavelength of the working powder in the fluorescent layer is between 500 and 5 8 5 nm 4. According to the item 1 in the scope of patent application In the light emitting device, the wavelength of the blue light emitted by the blue semiconductor is about 360 to 4800 nm, and the wavelength of the red light emitted by the red conductor is 5 8 5 to 78 nm. 5. The light-emitting device according to item 1 of the patent scope, according to which the f-light powder in the fluorescent layer can be Yttrium Aluminium Garnet or silicate (-ο #) or borate Class (BxO wide) material f. 〆 6. According to the light-emitting device described in the item of the scope of the patent application, in which the blue light Page 13! 228837 Benefits '' Semiconductors and red light semiconductors can be connected to the groove of a reflective cover. The groove can be filled with a fluorescent layer. According to the light-emitting device described in the first item of the scope of the patent application, the semiconductor and the red light semiconductor can be connected to the pre-groove above the main wire frame, the fluorescent layer is filled in the groove, and a light bulb type transparent 8 fluorescent layer And the upper end of the main wire frame is covered and integrated. According to the light-emitting device described in item 1 of the scope of the patent application, the material of the phosphor in the layer may be selected from one or a combination of the following compositions. The phosphor is activated by the europium element and contains γ and Human 丨 aluminum garnet Ce3 +); phosphor powder activated by plutonium element (YAG: EU2 + m) phosphor powder activated by plutonium CTerbium) element pomegranate series (YAG Tb3 +) 〇 The blue resin can be two types of fluorescent resin (YAG: 9, a light-emitting device, which has at least one blue light and at least one more red fluorescent layer. The blue light semiconductor package is coated with a transparent adhesive layer by fluorescent powder. The fluorescent layer and the fluorescent layer are used to excite the fluorescent layer, so that two wavelengths of light with different wavelengths than blue and red light appear. Features include: Semiconductor as blue light emitting light semiconductor as red light emitting light The transparent glue is uniformly mixed on the light, and the fluorescent coating is covered; the light-emitting layer emits wavelength and blue light, and is transmitted through the transparent glue layer, so that the non-wavelengths are mixed and transmitted to determine the source; the source; Blue light Red light is the same light Page 14