| abstract |
Disclosed is a polymer fine particle that enables electrical connection with excellent connection reliability. In the compression test in which the polymer fine particles are compressed at a loading rate of 0.2275 gf / sec, the polymer fine particles of the present invention are polymerized in advance before exhibiting the main fracture behavior in which the whole polymer fine particles are broken. The preliminary fracture behavior in which a part of the fine particles is broken is shown. [Selection] Figure 1 |