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Mixed-color LED

A light-emitting diode and color-mixing technology, which is applied in the direction of electrical components, circuits, semiconductor devices, etc., can solve the problems of difficult control of light-emitting colors, great differences, and high production costs, and achieve a wide and stable color temperature range, control output wavelength, and stable output Effect

Inactive Publication Date: 2008-04-09
EPISTAR CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to adjust the wavelength and brightness of the three light-emitting diodes separately to obtain a purer white color, so it is not easy to control the light-emitting color
Also, because there are three independent light sources, it may cause uneven color mixing
In addition, the semiconductor materials of the three primary colors of red, green, and blue light-emitting diodes are very different from each other, so the design of the driving circuit has become extremely cumbersome and complicated, resulting in high production costs

Method used

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Embodiment Construction

[0041] The present invention relates to a structure of color-mixing LEDs that can emit different colors of LEDs in series and / or in parallel to produce other colored lights. Please also refer to Figure 1A and Figure 1B The top views of the yellow light emitting diode and the blue light emitting diode in the color mixing light emitting diode of a preferred embodiment of the present invention respectively shown in . Figure 1A The yellow light-emitting diode 110 shown in has a positive electrode 120 on it, and Figure 1B The blue LED 130 shown in FIG. 1 has a negative electrode 140 and a positive electrode 150 thereon. Please refer to Figure 2A A top view of a color-mixing LED according to a preferred embodiment of the present invention is shown. Figure 2A The color-mixing light-emitting diodes are made of transparent glue (not shown) Figure 1B The blue LED 130 in the Figure 1A generated above the yellow LED 110. In addition, the positive electrode 120 on the yellow li...

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Abstract

The present invention provides one kind of mixed color LED, and features that several LED dies to emit light of different colors are manufactured and connected serially and / or parallelly to form LED emitting light of other color. For example, the first LED emitting yellow light and the second LED emitting blue light may be combined to for mixed color LED emitting white light. In addition, the first LED chip may be light excited diode chip to excite the second LED chip to emit light, and the light of the first LED chip and the light of the second chip is then mixed into light of other color.

Description

technical field [0001] The present invention relates to a structure of a light emitting diode (Light Emitting Diode; LED), in particular to a structure of a color-mixing light emitting diode in which multiple light emitting diodes that can emit different colors are connected in series and / or in parallel in a chip manufacturing manner to produce other colored lights . Background technique [0002] Regarding the structure of the color-mixing light-emitting diode and its manufacturing method, people familiar with this technology have provided some related documents. For example, Nichia Chemical Industries, Ltd. (Nichia Chemical Industries, Ltd.) proposed a method of using phosphor powder (US Patent No. 5,998,925 / 6,069,440) to excite Yttrium-Aluminum-Garnet (Yttrium-Aluminum-Garnet; YAG ) Phosphor produces yellow light, thereby producing yellow light and mixing with the original blue light to form white light. This method is to cover the YAG fluorescent substance on the InGaN ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/00
Inventor 陈锡铭
Owner EPISTAR CORP
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