White-light luminous diode

A technology of light-emitting diodes and diodes, applied in electrical components, electric solid-state devices, circuits, etc., can solve the problems of poor color saturation and display color temperature, low luminous efficiency, etc., and achieve the effect of good color saturation and display color temperature

Inactive Publication Date: 2006-06-07
CHUNGHWA PICTURE TUBES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low luminous efficiency of this kind of white light emitting diode, and it is a two-wavelength white light emitting diode (only blue light and yellow light are mixed), it is not as good as the other three wavelengths in terms of color saturation and display color temperature. white light emitting diode

Method used

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Embodiment Construction

[0035] Please also refer to Figure 1A and 1B ,in Figure 1A It is a schematic cross-sectional view of a white light emitting diode according to a preferred embodiment of the present invention, and Figure 1B for Figure 1A The circuit diagram of white light emitting diode. In addition, in order to simplify the drawings to clearly express the features of the present invention, Figure 1A The cross-sectional schematic diagram does not show the relevant connecting wires or circuit of the substrate. Such as Figure 1A and 1B As shown, the white light emitting diode 100 includes a red light emitting diode chip 110, a blue light emitting diode chip 120 and a carrier 102, wherein the carrier 102 is, for example, a packaging substrate, and the red light emitting diode chip 110 and the blue light emitting diode chip 120 are, for example, disposed on In the cavity 102a on the surface of the carrier 102. In addition, the red light emitting diode chip 110 is connected in series with t...

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Abstract

A white light LED includes a loader and a luminous unit on it, a second LED chip and phosphor powder, in which, the luminous unit is formed by connecting a first LED chip and a resistor element in series and the first LED chip is suitable for emitting a first color light, a second luminous LED chip is suitable for emitting a second color light and is parallel to the luminous unit, besides, the phosphor powder is set above the second luminous LED chip to generate a third color light excited by the chip.

Description

technical field [0001] The present invention relates to a light-emitting diode, and in particular to a three-wavelength white light-emitting diode. Background technique [0002] Light-emitting diodes use III-V elements as the main material of the light-emitting layer, and apply current to the light-emitting layer to release excess energy in the form of light through the combination of electrons and holes, thereby achieving the purpose of light emission. Different from traditional lighting methods such as heating or discharging, since the lighting phenomenon of LEDs is cold lighting, their service life is longer, and no warm-up time (idling time) is required. In addition, light-emitting diodes also have the advantages of fast response speed, small size, low power consumption, low pollution (mercury-free), high reliability, and suitable for mass production, so they can be used in a wide range of fields. In recent years, due to the continuous improvement of the luminous effici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/075
Inventor 陈庆仲
Owner CHUNGHWA PICTURE TUBES LTD
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