Multi-wavelength LED construction & manufacturing proces
a technology of led construction and manufacturing process, applied in the field of multi-wavelength led construction, can solve the problems of poor pseudo-white gloss, compromise the light emitting efficiency to produce light at lower luminance, and poor pseudo-white gloss, and achieve the effect of facilitating quality control of multi-wavelength led, and easy control of the amount and ratio of fluorescent powder
Inactive Publication Date: 2008-08-28
TAIWAN OASIS TECH CO LTD
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Benefits of technology
The present invention is about a new way to make LEDs that can emit light of different colors without interfering with each other. This is important because it makes it easier to control the quality of the LEDs. The invention involves coating the LED chip with a special material that can be excited by a specific wavelength of light. This allows for easy control of the amount and ratio of different fluorescent materials in different parts of the LED. Overall, this invention results in LEDs that are more efficient and have better color control.
Problems solved by technology
However, the prior art relies upon only fluorescent powders in a straight color as the complementary light excited by the light-emitting chip, the resultant pseudo-white gloss is poor and blamed for yellow halo phenomenon.
However, the amount and proportion of the fluorescent powders in different colors prevent easy control for effective control of the quality of the finished product; and interference exists due to that different colors of fluorescent powders are excited at the same position at the same time by the light source from the light-emitting chip.
Method used
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Embodiment Construction
[0012]Referring to FIG. 3, a first preferred embodiment of the present invention, a construction of a multi-wavelength LED has a chip mounting gel 40 to place a light-emitting chip 10 in a carrier 20; a golden plated wire 30 constitutes the connection between the blue light emitting chip 10 and two electrodes 21; and a fluorescent gel 50 containing fluorescent powders is applied to cover up the light-emitting chip 10. When the light-emitting chip 10 is conducted, the fluorescent powders in the fluorescent gel 50 are excited by the light source from the light-emitting chip 10 to emit the light in an expected color.
[0013]Wherein, the base layer and the peripheral of the light-emitting chip 10 are respectively coated with one or a plurality of fluorescent material of a given wavelength. When the light-emitting chip is conducted, the fluorescent materials are respectively excited to emit the light with expected color without mutual interference. The process not only achieves the higher ...
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A multi-wavelength LED construction and its manufacturing process having respectively coated on the base layer and the position above the peripheral of the light emitting chip a fluorescent material of a specific wavelength to be excited to provide higher light emitting efficiency and expected light color without mutual interference when the chip is conducted so to facilitate quality control of the multi-wavelength LED.
Description
BACKGROUND OF THE INVENTION[0001](a) Field of the Invention[0002]The present invention is related to an art of presenting LED light emitting efficiency and light color, and more particularly, to a multi-wavelength LED construction and its manufacturing process that produce highly light emitting efficiency and accurate gloss.[0003](b) Description of the Prior Art[0004]As illustrated in FIG. 1 for a schematic view of a basic construction of a multi-wavelength LED of the prior art, a chip mounting gel 40 is used to place a light-emitting chip 10 in a bowl shaped carrier 20; a golden plated wire 30 constitutes the connection between the blue light emitting chip 10 and two electrodes 21; and a fluorescent gel 50 containing fluorescent powders is applied to cover up the light-emitting chip 10. When the light-emitting chip 10 is conducted, the fluorescent powders in the fluorescent gel 50 are excited by the light source from the light-emitting chip 10 to emit the light in an expected color...
Claims
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IPC IPC(8): H01J9/02
CPCH01L33/504H01L2224/48091H01L2924/181H01L2224/48247H01L2224/48257H01L2224/73265H01L2224/8592H01L2924/00014H01L2924/00012
InventorLEE, MING-SHUNHO, CHANG-WEI
OwnerTAIWAN OASIS TECH CO LTD