CN101260298A - Wide color region cold cathode fluorophor composition - Google Patents

Abstract

A wide-color-gamut cold-cathode fluophor compound belongs to the fluorescent powder fluorescent powder field. The three basic-color powders adopted by the fluophor compound provided by the invention include a red powder R with the peak wavelength of 611nm, a blue powder B with the peak wavelength of 435nm, and a green powder G with the peak the wavelength of 515nm. When the fluophor compound provided by the invention is used to produce CCFL cold-cathode fluorescent tubes, the reductive effect of the colors are enhanced, the color purity is improved, therefore the saturation degree is increased, and the color-rendering property is raised to more than 90 percent from the prior 72 percent.

Description

Wide color region cold cathode fluorophor composition

Technical field

The present invention relates to a kind of wide colour gamut cathode fluorescent tube fluorescencer composition, in particular, relate to a kind of tricolor powder composition that improves the employing particular peak wavelength of saturation ratio.

Technical background

Along with the appearance of liquid-crystal display, growing with the demand of the various liquid-crystal displays of commercialization as family expenses.Simultaneously, people have also had higher requirement to the sharpness and the sense of reality of indicating meter, this has also just had higher requirement to the liquid-crystal display background light source with saturation ratio, color developing and the sense of reality of CCFL CCFL, and the effective fluor of preparation CCFL cold-cathode lamp is to saturation ratio, color developing and the sense of reality decisive role of CCFL CCFL.

As the effective traditional three-color phosphor composition of preparation CCFL cold-cathode lamp, be by low saturated, example: the rouge and powder R (Y that purity is not high ₂O ₃, glow, peak wavelength is 609nm), green powder G (LaPO ₄: Ce, Tb, green light, peak wavelength is 545nm), blue powder B (BaMgAL ₁₀O ₁₇, blue light-emitting, peak wavelength are 450nm) and powder mix NP (BaMgAL ₁₀O ₁₇: Eu, LaPO ₄: Ce, Tb, Y ₂O ₃: Eu) according to colourity, composite by a certain percentage.The colourity of this tricolor powder is R (0.644,0.353), G (0.351,0.586), B (0.148,0.056), NP (0.295,0.276), its saturation ratio is lower, colour rendering index only reaches 72%, so color effect is bad, the sense of reality is not strong, the reductive water adjustment can not demonstrate the most real color of object.

Summary of the invention

It is good to the purpose of this invention is to provide a kind of color effect, strong sense of reality, and the reduced level height can demonstrate the wide color region cold cathode fluorophor composition of the true colors of object.

The object of the present invention is achieved like this: a kind of wide color region cold cathode fluorophor composition, and the tricolor powder that fluorescencer composition adopts is respectively that peak wavelength is the rouge and powder R of 611nm, peak wavelength is the blue powder B of 435nm and the green powder G that peak wavelength is 515nm.

The present invention is because the employing peak wavelength is the rouge and powder R of 611nm, peak wavelength is that the blue powder B of 435nm and peak wavelength are that the green powder G of 515nm mixes and obtains fluorescencer composition, when this fluorescencer composition is used for producing the CCFL cathode fluorescent tube, the color rendition effect that has strengthened, colour purity is improved, thereby saturation ratio is improved, and color developing rises to more than 90% by original about 72%.Saturation ratio: the shared ratio of spectrally pure color, the i.e. purity of color in the component of certain color.Think very pure color by the spectrum color that monochromatic ray causes, visually be called the high saturation color.Purity drop when being mixed with white light in the monochromatic ray, corresponding desaturation.For example wavelength is that the coloured light of 650 nanometers is very pure redness, and after a certain amount of white light was added, mixing resultant produced pink, and the white light of adding is many more, and mixture colors is just impure more, and visual saturation ratio is just more little.Be equipped with the liquid-crystal display of this type of fluorescent tube, color developing rises to more than 90% by present 72%, has improved color developing greatly, can show general indicating meter the effect that can not show, as darker redness, bright-coloured yellow etc. have strengthened the sense of reality of the reduction effect and the color of color.

Embodiment

Embodiment:

The tricolor powder that fluorescencer composition adopts in following examples 2 is respectively that peak wavelength is the rouge and powder R of 611nm, and peak wavelength is the blue powder B of 435nm and the green powder G that peak wavelength is 515nm.

Example 1:

Rouge and powder R is Y ₂O ₃: Eu.

Blue powder B is Sr ₅(PO ₄) ₃Cl:Eu, La ₂O ₃

Green powder G is BaMgAL ₁₀O ₁₇: Eu, Mn, La ₂O ₃

Female powder NP is Sr ₅(PO ₄) ₃CL:Eu, BaMgAL ₁₀O ₁₇: Eu, Mn, Y ₂O ₃

Example 2:

Rouge and powder R is Y ₂O ₃: Eu.

Blue powder B be (Sr, Ca, Ba, Mg) ₁₀(PO ₄) ₆Cl ₂: Eu.

Green powder G is BaMgAL ₁₀O ₁₇: Eu, Mn.

Female powder NP is Y ₂O ₃: Eu, BaMgAL ₁₀O ₁₇: Eu:Mno, (Sr, Ca, Ba, Mg) ₁₀(PO ₄) ₆Cl ₂: Eu:Mg ₃(PO ₄) ₂

Produce the wide colour gamut fluorescent tube bulb of 3.0*728, with its colourity mediation be (X=0.26 Y=0.24), just needs following proportioning:

The wide colour gamut powder mix of the binding agent 30-50%+ adhesion agent 4-8%+ performance auxiliary agent wide colour gamut of dispersion agent 3-7%+ wide colour gamut rouge and powder 7-11%+ green powder 4-8%+ wide colour gamut blue powder 2-3%+ 30-50% (total amount of pressing fluorescent material liquid is distributed).

Example 1: produce the 3.0*728mm fluorescent tube with common three primary colors fluorescent powder, it is X=0.26 that colourity is in harmonious proportion, Y=0.24.

Example 2: produce the 3.0*728mm fluorescent tube with wide colour gamut three primary colors fluorescent powder, it is X=0.26 that colourity is in harmonious proportion, Y=0.24.

As follows:

Technical process:

1, preparation binding agent: adopts the electronic vacuum cotton of 1/2nd seconds or 20 seconds or 120 seconds or two kiloseconds, in 1: 40-1: 80 ratio adds acetate butyl stirring liquid after one to five day in the agitator of 120-500 commentaries on classics.Flow velocity: 30 seconds to 120 seconds;

2, preparation adhesion agent: press solid (routine 1:0.3CaO0.7BaO1.6B ₂O ₃Ca ₂P ₂O ₇) 1: 1-1: 2 add caking agent again by 1: 4-1: 10 add acetate butyl, put into ball milling cylinder mill again one day to four days, obtain the flow velocity 30-90 liquid of second;

3, various compositions are in harmonious proportion in proportion:

A) 50%-80% of required high saturated fluorescence powder summation adds caking agent;

B) 15%-30% of required high saturated fluorescence powder summation adds adhesion agent:

C) 1%-10% of required high saturated fluorescence powder summation adds performance auxiliary agent dispersion agent;

D) add the high saturated fluorescence powder of required three primary colours it is uniformly dispersed, its proportional range: R: G: B＞0: specifically decide according to customer requirement.

E) add acetate butyl and converted flow velocity 25-50S, can try powder production.

Claims (1)

1, a kind of wide color region cold cathode fluorophor composition is characterized in that:

The tricolor powder that the fluor combination is adopted is respectively that peak wavelength is the rouge and powder R of 611nm, and peak wavelength is the blue powder B of 435nm and the green powder G that peak wavelength is 515nm.