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Purple red light-emitting diode

A technology of light-emitting diodes and manufacturing methods, which is applied to semiconductor devices, electrical components, circuits, etc., can solve problems such as complex die-bonding and wiring, and achieve the effects of good excitation spectrum and luminous efficiency, long life, and good weather resistance

Inactive Publication Date: 2005-09-21
SOLIDLITE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the color of light-emitting diodes has the following colors under the range of visible light, such as red, orange, orange-red, yellow, yellow-green, green, blue, purple and other colors. Since there are no other mixed colors to choose from, we need to develop colors with different wavelengths. The light-emitting diode is one of the key points of light-emitting diode research at present. Traditionally, if you want to make a light source with mixed colors, you need to use more than two light-emitting chips of different colors to be packaged together. Different colors of light-emitting grains have different materials and require different driving voltages. Therefore, when designing, different driving currents must be added to each grain to adjust the brightness and color. This is its disadvantage.

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  • Purple red light-emitting diode
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  • Purple red light-emitting diode

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Embodiment Construction

[0030] The content of the manufacturing method of the purple-red light-emitting diode of the present invention will be described below in conjunction with related drawings and examples.

[0031] Such as figure 1 As shown, select a purple LED crystal grain 1 with a wavelength of 405-430nm, and through the die-bonding process, the purple LED crystal grain is fixed on the wire support 2 and connected through the wire 5, and the red phosphor powder (1) is taken. Its composition is 6MgO·As 2 o 5 : Mn, or red fluorescent powder (two) 3.5MgO 0.5MgF 2 · GeO 2 : Mn, weigh out an appropriate amount of fluorescent powder and transparent glue 3 to mix into fluorescent glue 4, and apply the fluorescent glue 4 directly or indirectly on the purple LED crystal grain 1 by dispensing, and then seal the glue Packaged into lamp type (Lamp) or surface mount type (SMD). Under the excitation of purple light, the red phosphor produces red light with a wavelength of about 650nm, such as Figure...

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Abstract

A method for processing a purple LED is to coat by irradiation crystal grains of violet light LED with wavelength between 405-430 nm onto red fluorescent powder on its surface to excite the powder to generate a red light with wavelength of 650 nm by the voice light and utilize the excited red light and the original violet light from the violet LED to mix them to generate purple (or pink) LED which is widely used in handset of liquid crystal electronic products due to the new color system LED.

Description

technical field [0001] The invention relates to a method for manufacturing a light-emitting diode (LED), in particular to a method for manufacturing a purple-red light-emitting diode. Background technique [0002] Compared with general traditional lighting, light-emitting diodes have the advantages of power saving, long life, and environmental protection. With the improvement of brightness and the reduction of cost, semiconductor lighting will be realized in the future. [0003] At present, the color of light-emitting diodes has the following colors under the range of visible light, such as red, orange, orange-red, yellow, yellow-green, green, blue, purple and other colors. Since there are no other mixed colors to choose from, we need to develop colors with different wavelengths. The light-emitting diode is one of the key points of light-emitting diode research at present. Traditionally, if you want to make a light source with mixed colors, you need to use more than two ligh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/50
CPCH01L2224/8592H01L2924/181H01L2224/48091H01L2224/48247H01L2924/00014H01L2924/00012
Inventor 陈兴
Owner SOLIDLITE CORP