CN100483759C - LED of brightening pink light - Google Patents

Abstract

A LED emitting pink light consists of blue light chip enabling to emit blue light spectrum with main peak wavelength of 430-480nm and red light fluorescent powder enabling to emit red light spectrum with main peak wavelength of 600-620nm by absorbing partial said blue light spectrum. It is featured as color-mixing said blue light spectrum with said red light spectrum to form pink light.

Description

A kind of LED production method of brightening pink light

Technical field

The present invention relates to a kind of manufacture method of light-emitting diode, belong to lighting technical field, especially relate to a kind of manufacture method of light-emitting diode of brightening pink light.

Background technology

At present, with LED wafer and phosphor combination, the optical excitation fluorescent material and the colour mixture formation pink that utilize LED wafer to send are to make the modal a kind of method of pink LED.

The Taiwan patent No. for example: 01120644.6, name is called: " a kind of preparation method of high-luminance pink LED ", this technology is to utilize can to send wavelength and can send wavelength for the visible light of 370nm to 410nm or ultraviolet light-emitting diodes excite and be the orange light of 585nm to the 700nm Yttrium aluminium garnet (YAG) type fluorescent powder to ruddiness, and the light of the two produces pink after mixing.

The Taiwan patent No. and for example: 02119348.7, name is called: " purple red light-emitting diode ", this technology is to utilize the purple-light LED crystal grain of wavelength between 405-430nm, irradiation is coated in its surface and can produces the red fluorescence powder that wavelength is about the 650nm red light, and two kinds of color colour mixtures produce the light-emitting diode of purplish red light (or pink).

The Taiwan patent No. for another example: 03103515.9, name is called: " pink light-emitting diode ", this technology is to utilize to send the blue light-emitting diode crystal grain of wavelength for 422-455nm, excites yellow fluorescent powder and red fluorescence powder to mix the light-emitting diode that the back produces pink.

More than utilize the light-emitting diode of the pink of mixed light making, reality is a kind of approach that realizes the light-emitting diode brightening pink light, from practicality, use the purple light wafer price too expensive, be not suitable for production in enormous quantities, sale to this light-emitting diode; And used Yttrium aluminium garnet (YAG) type fluorescent powder production process is loaded down with trivial details, is difficult for obtaining; Simultaneously, apply more than one fluorescent material on a wafer, its cost height is not said, and material is too many, and the also bad grasp of proportioning ratio each other makes the light colour cast of sending easily.

Summary of the invention

In view of this, the objective of the invention is, a kind of, manufacture method of making the light-emitting diode of simple, practical and a kind of brightening pink light that can be used to produce in enormous quantities low than the prior art cost is provided in order to solve the above-mentioned problem that proposes.

To achieve these goals, the technical solution adopted in the present invention is a kind of manufacture method of light-emitting diode of brightening pink light, it is characterized in that, this manufacture method may further comprise the steps:

A, the blue light wafer is fixed on the support, welds conductor wire then, described blue light wafer sends the blue spectrum with peak wavelength in 430nm-480nm;

B, with silica gel, silica gel curing agent and red fluorescence powder by 1:1:(0.1-0.6) weight ratio evenly be hybridly prepared into fluorescent glue, described red fluorescence powder can send the red-light spectrum with peak wavelength in 600nm-620nm, the compound that described red fluorescence powder is made up of silicate and europium, its molecular formula is: (SrBa) ₂SiO ₄: Eu ²⁺

C, the fluorescent glue that configures is coated on the blue light wafer top surface;

D, baking fluorescent glue;

E, seal peripheral glue;

F, slotting support;

G, just roasting;

H, from mould;

I, long roasting;

J, test repeatedly.

In the described making step with the colourity of the light that light-emitting diode was sent of how much regulating brightening pink light that adds red fluorescence powder.

The present invention compared with prior art, its beneficial effect is: the blue spectrum that the present invention adopts the blue light wafer to send absorbs the red-light spectrum colour mixture of sending behind a part of blue light with red fluorescence powder, to obtain pink.Than the used purple light wafer of prior art, blue light wafer cost is low; And red fluorescence powder is made simply acquisition easily; Simultaneously, the light-emitting diode material therefor kind of the brightening pink light that the present invention makes is less, and proportioning is easy, and according to the variation of proportioning can also make color by baby pink to any colourity requirement the rediance; Therefore, comprehensively described, not only cost is low, making is simple but also practicality is stronger in the present invention, and also is easy to make the light-emitting diode of large batch of brightening pink light.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 makes the technological process of the light-emitting diode of brightening pink light for the present invention;

The light emitting diode light color bits of the brightening pink light that Fig. 3 makes for the present invention is in cie color coordinate schematic diagram.

Embodiment

Is the function and benefit of further understanding architectural feature of the present invention in depth and can reach, now enumerates specific embodiment, and detailed introduction of conjunction with figs. is described as follows:

See figures.1.and.2, a kind of manufacture method of light-emitting diode of brightening pink light may further comprise the steps: a, blue light wafer 11 is fixed on the support 13, and welding conductor wire 14; B, with silica gel, silica gel curing agent and red fluorescence powder 12 by 1:1:(0.1-0.6) weight ratio evenly be hybridly prepared into fluorescent glue; C, the fluorescent glue that configures is coated on blue light wafer 11 end faces; D, baking fluorescent glue; E, seal peripheral glue, promptly with a glue look whiter epoxide-resin glue 15 be sealed in two stands 13 upper ends and on the light transmission part; F, slotting support are about to send out two stands 13 and insert in the model that pre-sets; G, carry out the baking of preliminary short time, make its basic forming; H, from model, take out; I, put into baking box and toast for a long time; J, last repeatedly test again.Can finish a kind of making of brightening pink light modulation type light-emitting diode, in this making step, the colourity of the light that is sent with the light-emitting diode of how much regulating brightening pink light 10 that adds red fluorescence powder 12 can make color by the light-emitting diode of baby pink to any colourity the rediance.

More than making principle is the blue spectrum of utilizing blue light-emitting diode wafer 11 to be sent, and excitated red fluorescent powder 12 sends red-light spectrum, falls within coordinate (0.335,0.27) on the cie color coordinate diagram by the color of the blue light of proper proportion and ruddiness colour mixture; (0.365,0.19); 4 zones that line constituted of (0.505,0.39) and (0.535,0.29) expression, as shown in Figure 3.

Based on technical characterictic of the present invention and embodiment, easily just can realize the light-emitting diode production of brightening pink light in enormous quantities.And the used silica gel of the present invention is a kind of rare silica gel, mainly plays the high temperature of anti-the welding, little, the hard power of convergent force is little, in case heating-up temperature too high damage and silica gel distortion to the blue light wafer; The used silica gel curing agent mainly is that fluorescent material can better be solidificated on the surface of blue light wafer.

Claims (1)

1, a kind of manufacture method of light-emitting diode of brightening pink light is characterized in that, this manufacture method may further comprise the steps:

A, the blue light wafer is fixed on the support, welds conductor wire then, described blue light wafer sends the blue spectrum with peak wavelength in 430nm-480nm;

B, with silica gel, silica gel curing agent and red fluorescence powder by 1:1:(0.1-0.6) weight ratio evenly be hybridly prepared into fluorescent glue, described red fluorescence powder can send the red-light spectrum with peak wavelength in 600nm-620nm, the compound that described red fluorescence powder is made up of silicate and europium, its molecular formula is: (SrBa) ₂SiO ₄: u ²⁺

C, the fluorescent glue that configures is coated on the blue light wafer top surface;

D, baking fluorescent glue;

E, seal peripheral glue;

F, slotting support;

G, just roasting;

H, from mould;

I, long roasting;

J, test repeatedly.

Images