Abstract:
PROBLEM TO BE SOLVED: To provide a member for a semiconductor device which improves heat resistance, light resistance, film forming property and adhesion and is capable of sealing the semiconductor device without being cracked or exfoliated.SOLUTION: According to a method (I), heating weight reduction is 50 wt% or less and according to a method (II), an exfoliation rate is 30% or less. The method (I) includes: using 10 mg of fragments of the member; and measuring the weight reduction by means of a heating weight reduction/differential heat measuring device through heating from 35°C to 500°C under circulation of air at 200 ml/minute and at a temperature elevation speed of 10°C/minute. The method (II) includes: dripping and hardening a formation fluid into a copper cup in which the diameter is 9 mm and the depth of a recess is 1 mm and which has a surface plated with silver to obtain the member for the semiconductor device; absorbing moisture from the member for 20 hours in the temperature of 85°C and the humidity of 85%; holding the moisture absorbed member for 10 sec in the temperature of 260°C after the temperature is elevated from the room temperature to 260°C for 50 sec; cooling the member to the room temperature; observing whether the member is exfoliated from the cup; implementing such operations for each of ten members; and calculating an exfoliation rate.
Abstract:
PROBLEM TO BE SOLVED: To provide an illumination unit comprising at least one LED as a light source which is distinguished by high efficiency.SOLUTION: An illumination unit is based on a luminescence conversion LED emitting primary radiation in the range from 370 to 430 nm of the optical spectral region (peak wavelength), this radiation being converted into radiation of a longer wavelength using three phosphors which emit blue, green and red light.
Abstract:
The invention relates to an ultraviolet to green light region silicate phosphor capable of being excited by radiation light source and its manufacturing method, particularly to white and multicolor systems light-emitting device. The material has luminous color in the range from blue to red color system. The essential composition of the phosphor is aMO·bM'O·SiO 2 ·cR:xE·yLn·zLv·´Lm, wherein M is an element or a combination of elements selected from the group consisting of Sr, Ca, Ba and Zn; M' is an element or a combination of elements selected from the group consisting of Mg, Cd and Be; R is one or two of B 2 O 3 and P 2 O 5 ; Ln is an element or a combination of elements selected from the group consisting of Nd, Dy, Ho, Tm, La, Ce, Er, Pr, Bi, Sm, Sn, Y, Lu, Ga, Sb, Tb, Mn and Pb; Lv is an element or a combination of elements selected from the group consisting of Cl, F, Br, I and S; Lm is an element or a combination of elements selected from the group consisting of Li, Na and K
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor device member that seals semiconductor devices without cracks and peeling and is excellent in heat-resistance, light-resistance, film formation, and adhesiveness. SOLUTION: The semiconductor device member has a heating weight reduction of ≤50 wt.% measured by the method (I) below and a peeling rate of ≤30% measured by the method (II) below. The method (I) measures weight reduction of 10 mg of crushed pieces of the member by thermogravimetric/differential thermal analyzer under 200 ml/min air flow with heating from 35°C to 500°C at 10°C/min of heat-up rate. The method (II) determines the peeling rate by performing on ten pieces of the member a series of steps of dropping liquid for curing semiconductor device member in a silver-plated copper cup of 9 mm diameter and 1 mm depth of a recess to make a semiconductor device member, and letting the member absorb moisture for 20 hours at 85°C and 85% of humidity, heating the moisturized member from room temperature to 260°C in 50 second, holding at 260°C for 10 seconds and cooling it down to room temperature, observing the existence of peeling, and determining the separation rate. COPYRIGHT: (C)2009,JPO&INPIT