JPS55138865A - Semiconductor device - Google Patents

Abstract

PURPOSE:To improve the availability of a plurality of transistors of symmetrical mirror surface structure that base terminals are separated at the farthest distance by symmetrically arraying the transistors with respect to axial direction of the mirror surface as a transistor array and disposing the array perpendiculary to the symmetrical axis of the mirror surface. CONSTITUTION:Transistors are so disposed symmetrically with respect to the mirror surface axis 109 that the base terminals 103 and 104 thereof are located at the farthest distance from each other, this transistors array is as a minimum unit of repeated dispositions in a chip. A transistor cell 110 thus formed is repeatedly disposed in the direction of a symmetrical mirror surface axis 109 as a transistor array 111. The array 111 thus formed is repeatedly disposed as designated by 113, 114 at an interval required with each other in a direction 112 perpendicular to the axis 109. Thus, an LSI is largely integrated so that, the larger the LSI is arrayed, the number of the space transistors at the transistor array end becomes substantially constant in mean value and one space transistor is created only in case that the circuit block using odd transistors is aligned in a direction of odd arrays.