JPS60186575A - X-ray curable adhesive - Google Patents

Abstract

PURPOSE:An adhesive to which a substance emitting fluorescence with X-rays is added as a filler and the components causing photoreactions is excited with the fluorescence to effect curing, thus adhering non-permeable materials without strains at the adhesion sites and cleavage caused by thermal expansion. CONSTITUTION:A substance emitting fluorescence with X-rays such as CaWO4 or CaSiO3:Pb is added as a fillter to excite the components which cause photoreaction by the fluorescence emitted with X-ray such as polyvinyl cinnamate to start the reaction of curing an acrylic or polybutadiene resin which is active to the light of, e.g., about 470nm wavelength.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a resin for bonding and fixing or botting elements such as semiconductors at precise positions.

Conventionally, elements have been bonded together by filtering or soldering. Epoxy or silicone resin is also used as the botting agent. However, since 7J11 requires heating or being left unattended, it is inevitable that the element will deteriorate or become misaligned due to expansion of the resin.

The object of the present invention is to provide a resin which is characterized in that it is cured by X-rays in order to eliminate these drawbacks.

This will be explained in detail below. Polyvinyl cinnamate is 470 m
It is cured by reacting with an acrylic or polybutadiene resin that is active toward elements around m. The spectral sensitivity of this polyvinyl cinnamate is shown in FIG. The phosphor to be added is CaWO4, Ca8i0a, which contains almost no iodine or gold halide that adversely affects elements or wiring:
pb etc't-[use.

These fluorescence spectra are shown in FIG. CaWo 4
When 't- is used, it is necessary to add a Sankei term sensitizer to excite the narrow polyvinyl cinnamate whose fluorescent wavelength by X-rays is relatively long. In the case of Ca5iOa:Pb, this sensitizer is not required; this resin is anaerobic and the excess portion in contact with air does not harden and can be removed with an IV solvent. Further, at time t of botting, it is cured in an N2 gas atmosphere. 1. Curing speed can be adjusted by adjusting the X-ray intensity and irradiation time.

It can also be adjusted by adjusting the a shoulder of the filler.

The resins described below are especially suitable for contact H' that requires high accuracy.
When carrying out fc, by monitoring X-rays from the outside, the deviation of about 1d can be corrected while curing with O. Increasing the M content of the indigo filler is an effective means for adhesion to the heat conductor.

As explained above, according to the present invention, all 19 defects such as distortion and cracking of the adhesive part due to thermal expansion, such as thermosetting pear resin, are eliminated, and optical resistance, such as bonding between metals, is eliminated. An X-ray cured resin that is effective for adhesion between transparent materials can be obtained.

[Brief explanation of drawings]

Figure 1 shows the spectral sensitivity of polycrystalline vinyl, and Figure 2 shows the emission spectrum of the phosphor. Tsu (范いいくTY＞RL SL＼°71− I+／skewer Zushi」 Sakae 1 is 1

Claims (1)

[Claims] By adding a phosphor that fully generates fluorescence in the presence of X-rays as a filler, the components that undergo a chemical reaction are excited by the fluorescence generated by the X-ray pre-irradiation, thereby initiating a reaction and curing (i71
Adhesive for X-ray hard pear with ￥f characteristics.