| 摘要 |
<p>An insulating spacer comprises a plurality of unit spacers each of which has a hollow portion. The unit spacers are disposed between two members, such as electrodes, so that side walls of peripheral portions of the unit spacers are not aligned on a plane between the two members. There is no possibility that the space between the two members may be filled, for the most part, with insulating solid material and a narrow gap may be present at the remaining minor part of the space. Therefore, there is no possibility of a local concentration of electric field between the two members.</p> |
