Abstract: A color-adjustable luminescent powder is provided, the chemical general formula of which is (YaGdbEuc)2O3·xZn(1-m)AlmO, wherein 0?a?0.99, 0?b?0.99, 0.01?c?0.08, provided that a+b+c=1 and a and b are not 0 simultaneously; x is the molar ratio between Zn(1-m)AlmO and (YaGdbEuc)2O3, 0.01?x?0.20, and 0.001?m?0.05. A preparation method of the above luminescent powder is also provided, which comprises the following steps: adding an aqueous alcohol solution containing a complexing agent, and a surfactant to a mixed solution containing needed components to obtain a precursor solution, then aging the precursor solution, undergoing calcination treatment and cooling to obtain the said luminescent powder.

Abstract: The invention discloses a liquid crystal substrate, a manufacturing method thereof, and an LCD device. A liquid crystal substrate comprises electrode(s), and the electrode is made of transparent conductive colloid. In the invention, because the transparent conductive colloid is used to replace ITO films to make the electrodes, and the transparent conductive colloid (such as nanometer silver colloid, carbon nanotube colloid and the like) forms a film after being applied and cured. Thus, the liquid crystal substrate has the advantages of low cost, simple process, immediate etching after being applied and dried. The cost of equipment required by PVD during ITO preparation is reduced, the FAB space is effectively used, the use amount of metal such as indium, tin and the like is reduced, the cost of equipment for manufacturing LCDs and liquid waste disposal is reduced, the manufacturing time is reduced, and the output is increased.

Abstract: Fluorescent materials and preparation methods thereof are provided. The fluorescent materials are represented by the general formula: Y2O3: Re, M, Zn1-xAlxO, wherein Re is at least one selected from Eu and Tb, M is at least one selected from Ag, Au, Pt and Pd in the form of nano-particle, and 0<x?0.05. The said methods include the following steps: step 1, preparing a colloid of Zn1-xAlxO; step 2, preparing a colloid of Y and Re containing the metal element M; step 3, mixing the colloid of Zn1-xAlxO with the colloid of Y and Re, aging and heating treatment to form the fluorescent materials. Compared to the Y2O3 fluorescent materials in the art the present fluorescent materials have higher luminescence efficiency, conductivity, long life and industrial applicability.

Abstract: Fluorescent materials used in field emission and preparation methods thereof are provided. The said fluorescent materials are a mixture consisting of Zn1-xAlxO, europium yttrium oxide or terbium yttrium oxide, wherein 0<x?0.05. The said methods include the following steps: step 1, preparing Zn1-xAlxO, wherein 0<x?0.05; step 2, weighing yttrium oxide or yttrium oxalate and europium oxide or terbium oxide or oxalate thereof, grinding to form a mixture; step 3, mixing Zn1-xAlxO with the mixture in step 2, stirring, drying to form a mixture; step 4, calcining the mixture in step 3 to form the said fluorescent material used in field emission. The fluorescent materials increase luminescent intensity and the said preparation methods have simple technique, low equipment requirement and short preparation cycle.

Abstract: Double core-shell fluorescent materials and preparation methods thereof are provided. The double core-shell fluorescent materials include inner core, inner shell coating the inner core and outer shell coating the said inner shell. The inner core is metal particle and the chemical constitution of the inner shell is silicon dioxide. The outer shell is fluorescent powder represented by the following chemical formula: (R1-x, Eux)2O3, wherein R is Y, Gd or combination thereof, 0.02?x?0.1. The double core-shell fluorescent materials with uniform and stable luminous effect not only increase luminous intensity, but also decrease usage amount of fluorescent powder by using metal particle as inner core.