| 摘要 |
PURPOSE:To shorten the signal delay time at the time of propagating signals with an extremely simple constitution, by gradually reducing the average width of the wiring as going further from one end of the array of plural unit circuits. CONSTITUTION:It is arranged that memory cells 11a, 11b, and 11c are driven by a signal which is propagated through a word line 12 continuously installed from one end of the array of these memory cells through each memory cell and made of polycrystalline silicon. The horizontal shape of the word line 12 has not any periodicity which is equal to the array pitch of the above mentioned memory cells and is different for each memory cell. Moreover, average width of the wiring in each memory cell 11a, 11b, and 11c becomes gradually narrower as going further from the signal input terminal when the left side end of the diagram is considered as the word signal input terminal. |
