TW546854B - White light emitting device - Google Patents

Abstract

This invention discloses the usage of red phosphor glue which has broader wavelength spectrum coverage to replace red chip which has narrower wavelength spectrum coverage, then combining green chip and blue chip to emit more realistic colorless light. This invention also discloses the usage of green phosphor glue which has broader wavelength spectrum coverage to replace green chip which has narrower wavelength spectrum coverage, then combining red chip and blue chip to emit more realistic colorless light. This invention further discloses the usage of red phosphor glue which has broader wavelength spectrum coverage and green phosphor glue which has broader wavelength spectrum coverage to replace red chip and green chip respectively, then combining blue chip to emit more realistic colorless light. The glue used in this invention to spray over the chip(s) also provides protection to the chip(s).

Description

546854 V. Description of the invention ⑴ ^ 1. Background description The conventional technique is shown in Figure 1 A. The substrate 10 is provided with a red light emitting diode (R), a green light emitting diode (G), and a blue light. Colored light-emitting diodes ° (B) 'Co-Juice Two> Kunhe Luminescence produces white light-emitting (colorless) light-emitting units, which are protected by encapsulation gel 1 1 on the chip. Figure 1B shows the spectral distribution of Figure 1A. The spectrum of the red light-emitting chip is about 58 0-6800 nm, and the peak is about 6 40nm. The spectrum of the green light-emitting chip is about 480nm-580nm. The peak is approximately 53nm? The spectrum of the κ-color light-emitting chip is approximately 480 nm-580 nm, and the peak is approximately 530nm. The spectral distribution of white light in nature is approximately 400nm-720 η m? And the spectrum of artificial white light is only a part of the full spectrum of natural light '. For example, as shown in Figure 1B, the white light synthesized by RGB light-emitting diodes has a peak of 64 0nm, 5 3 0 nm, and Compared with the full spectrum of white light of natural light, the synthesis of the three sets of spectra at 480 nm lacks light such as below 330 nm, around 500 nm, around 580 nm, and above 68 nm. "SrS: Eu" and "SrGa2S4: Eu" products have matured development, and the price is lower than that of light-emitting diode chips. Using these photoresists to replace the corresponding light-emitting chips can provide a wider Broad spectrum color ‘the synthesized white light emitting unit’ can produce a more realistic white light spectrum? ^

Page 5 546854 V. Description of the invention (2) 2 · Field of application of this technology This technology is applicable to a light-emitting unit that generates white light by combining a light-emitting diode and a fluorescent glue. 3. · Excerpt from this technique | Explanation (1) One of the purposes of this technique is to develop a white light emitting unit that is closer to the true spectrum. (2) The second purpose of this technique is to develop a white light emitting unit composed of a blue-green light emitting wafer 'and an I color first fluorescent glue. (3) The third purpose of this technique is to develop a white light emitting unit composed of blue and red light emitting wafers ~ 5 green and green fluorescent glue. (4) The fourth objective of this technology κ μ human red is to develop a white light-emitting sheet composed of a blue light-emitting chip, a red light-emitting photoresist, and a green light-emitting fluorescent light. 4 · A detailed description of this technology, Μ is the first example of this technique f: 5 materials 1! On & a blue light emitting chip B is provided, which provides blue light $ # sign noisy first light emitting chip provides green light emission. A red light-emitting crystal covers the aforementioned two wafers. When the aforementioned blue light R1 ^ emits an emerald light, the aforementioned red light fluorescent glue is excited, and the red i emits light; by simultaneously emitting the three-color light,

Page 6 546854

V. Description of the invention (3) The color is mixed to obtain the white outgoing light. Figure 2B is the pre-spectrum distribution chart of Figure 2A. It shows that the spectral distribution of R1 fluorescent gel is between 55nm and 730nm, and the peak is about 63nm. Compared to the conventional art of FIG. 1B, which provides a white light emitting unit closer to the true white light spectrum? FIG. 3A shows a second embodiment of a display substrate 10 with a blue light emitting chip B disposed thereon to provide blue light emission, and red light emitting chip r to provide red light emission; green light fluorescent glue G1 ' L is covered on the two wafers. When the blue light emitting chip B emits blue light, the green fluorescent glue is excited to produce green light. The light is obtained by mixing and emitting the three colors of light at the same time. Emitted light from white light. Fig. 3B is the prior spectrum distribution diagram of Fig. 3A. It shows that the spectral distribution of G 1 fluorescent gel is between 480 nm and 62 Onm, and the peak is about 5 3 Onm? Compared to the conventional technique of FIG. 1B, which provides a white light emitting unit closer to the true white light spectrum? FIG. 4A is a third embodiment of the display substrate 10, and a blue light emitting chip B is disposed on the display substrate 10 to provide blue light emission; red first fluorescent glue R1 and green fluorescent glue G1 cover the foregoing wafer B. When # 述 之 blue light emitting chip b emits blue light,

546854 V. Description of the invention (4) Exciting the described red light fluorescent glue to emit red light, and also exciting the aforementioned green light fluorescent glue G1, so as to emit green light; by the simultaneous emission of the three-color light, the color mixture is translated into Emitted light from white light. The red glory glue R1 in this embodiment can be covered on or under the green fluorescent glue G1, or a user who mixes the two. Fig. 4B is the spectral distribution diagram of Fig. 4A. ^ Shows the use of luminescent glue and G1 fluorescent glue. Compared with the conventional technique of Fig. 1B, Lu 'provides a white light emitting unit that is closer to the true white light spectrum? The description discloses the preferred embodiments and design drawings of the present invention. However, the preferred embodiment is only an illustration with the design drawings. Longfei is not used to limit the scope of the right of the present invention. Anyone who implements the present invention with equal technical means or technology ^, or implements extravagance with the rights covered by the "Patent Application Garden" described below, does not depart from the spirit of the present invention and is within the scope of the applicant.

546854 Simple description of the diagram 5. Simple description of the diagram Figure 1 A is the conventional technique " Figure 1 B is the distribution chart of begging spectrum of Figure 1 A Figure 2A is the first example of the technique f Figure 2B is the map of Figure M Spectral distribution chart Figure 3A is the second example of the technique f Figure 3B is the prior spectrum distribution of Figure 3A Figure 4A is the third example of the technique f Figure 4B is the prior spectrum distribution of Figure 4A 6. Element number table substrate 1 0 Packaging gel 11 Red light emitting chip R Green light emitting chip G Blue light emitting chip B Red light fluorescent adhesive Rl ·

Green light fluorescent glue GL

Claims (1)

546854 VI. Scope of patent application1. A white light-emitting light unit, including: I-color light-emitting chip 'provides blue light emission; green light-emitting chip provides green light emission; substrate, which carries the escape chip; red light Fluorescent glue covers the two chips. When the blue light emitting chip emits basket-color light, the red light fluorescent glue is excited to generate red light. The color is mixed by emitting the three-color light simultaneously. Get the white light out of the light. 2. A white light emitting unit including a blue light emitting chip to provide a blue light emission; a red light emitting chip to provide a red light emission; a substrate carrying a evanescent wafer; and a green light fluorescent glue covering the foregoing On the two wafers, when the blue light emitting chip emits blue light, the green fluorescent glue is excited to generate a green light exiting line; the three colors of light are emitted simultaneously to mix and obtain white light. Light. 3. A kind of white light emitting unit, comprising: a blue light emitting wafer 'to provide the emission of blue light; a substrate, which carries the front wafer; Page 10 546854 Patent application scope Red light fluorescent glue, covering the former red light fluorescent glue, when the light chip emits blue light, the former Putian is excited ... the light light red light emits light and image; and the green light Fluorescent glue, covering the above 4, +, said # above film emission log β 2 Ί, when the aforementioned blue light emission = light emission i% I 'excites the aforementioned green light fluorescent glue' to produce ί 2 ίΐ 'By combining the aforementioned three-color light and emitting simultaneously, a white-colored outgoing light is obtained. 4. A white light emitting unit, including a blue light emitting chip that provides blue light emission; a substrate that carries a front escape chip; and a red light fluorescent J glue and a green light fluorescent glue that cover the above wafer When it is stated that = the color first luminescence chip emits blue light, the aforementioned red fluorescent glue is excited to generate red light exit light; when the aforementioned blue light emission chip emits k colors first, the aforementioned green light is excited Fluorescent glue produces green light to emit light; the three colors of light are emitted simultaneously to mix colors to obtain white light to emit light. 5. The white light emitting unit according to item 3 of the scope of patent application, wherein the red fluorescent glue is covered on the green fluorescent glue. 6. The white light emitting unit according to item 3 of the patent application scope, wherein the red light fluorescent glue is covered under the green light fluorescent glue. 546854 VI. Application for patent scope 7 · A method for manufacturing a white light emitting unit, including: preparing an M-color light emitting chip to provide blue light emission; preparing a green light emitting chip to provide green light emission; preparing a substrate, Carry the aforementioned wafer; and prepare red light fluorescent glue to cover the two wafers. When the winter light emitting wafer emits blue light, the blue glue mentioned in the red is excited, and the red light is emitted first; By using the aforementioned three-color = fluorescent color mixing, a white-first emitted light is obtained. Simultaneous emission and 8 · —A method for manufacturing a white light emitting unit, including: preparing a basket-color light emitting chip to provide blue light emission; preparing a red light emitting chip to provide red light emission; preparing a substrate And prepare green light fluorescent glue to cover the two chips, when the light emitting chip emits blue light, before the excitation: the blue glue mentioned above produces green light first; by the three The color light is mixed to obtain the white first emitted light. 9．A method for making a white optical light unit at the same time includes: Page 12 546854 VI. Apply for a patent. Prepare the substrate and wear the aforementioned wafer. Prepare the red light glue to cover the above wafer. When the aforementioned blue light wafer comes out of 1 color light, the aforementioned red color is excited. The light-emitting fluorescent glue produces ten light rays from rural labor; and prepares green light-emitting fluorescent glue to cover the above chip. When the blue light-emitting chip emits blue light, the green light-emitting fluorescent glue is excited. Green light is emitted; light is emitted through the simultaneous emission of the three-color light to obtain white light. 1 〇 · A method for manufacturing a white light emitting unit, including preparing a blue light emitting wafer and providing blue light emission; preparing a substrate and carrying out the aforementioned wafer; and preparing red light fluorescent glue and green light fluorescent glue 'Covered on the aforementioned chip, when the aforementioned ocher light emitting chip emits blue light, the aforementioned red light fluorescent light is excited' to generate a red emission light; when the aforementioned blue light emitting chip emits ocher light, the aforementioned &Amp; & light. The green light fluorescent glue produces peak green sound and light. To the out of white light 彳! ^ Method for making white light-emitting unit described in item 9 of Psychic Psychosphere, # σ described in 1 ^ Red light fluorescent glue covers green light fluorescent glue Surface 0 Page 13 546854 VI. Application scope of patent 1 2. The method for making white light emitting unit as described in item 9 of the scope of application for patent, wherein the red light fluorescent glue is covered under the green light fluorescent glue. Page 14