Semiconductor device with chip layout having inner electrode con

Details Semiconductor device with chip layout having inner electrode con Semiconductor device with chip layout having inner electrode con

1994-12-19

1996-12-17

Crane, Sara W.

Active solid-state devices (e.g., transistors, solid-state diode

Lead frame

On insulating carrier other than a printed circuit board

257786, 257207, H01L 23495

Patent

active

055856667

ABSTRACT:
A semiconductor integrated circuit for driving an LCD. The circuit has a shift register circuit portion (3) and a driver circuit portion (7). All the stages of the shift register circuit portion are formed adjacently to the outer fringe of a chip (30). All the stages of the driver circuit portion are formed along the central line (L.sub.1) of the chip. Signal electrodes (8.sub.1 -8.sub.N) for individual bits are formed in a belt-like region (33) extending in the X-direction along the central line (L.sub.1) and adjacently to the driver circuit portion. Output electrodes are arranged in a zigzag fashion. Since the output electrodes overlap with each other in the Y-direction, the width of the chip can be suppressed. Power supply voltages (V.sub.H, V.sub.0, V.sub.2, V.sub.3, V.sub.5) are applied to the driver circuit portion (7) through leads (36-40). These leads are connected so as to form a closed loop making one revolution around the output electrodes (8.sub.1 -8.sub.N) located in the center of the chip. The leads do not intersect with each other, thus making the impedances of the leads uniform. As a result, the nonuniformity of the-contrast of the display can be suppressed.

REFERENCES:
patent: 4535531 (1985-08-01), Bhatia et al.
patent: 4811081 (1989-03-01), Lyden
patent: 4930000 (1990-05-01), Kantz
patent: 5008728 (1991-04-01), Yamamura et al.
patent: 5064706 (1991-11-01), Ueda et al.
patent: 5083181 (1992-01-01), Yoshida et al.
patent: 5208782 (1993-05-01), Sakuta et al.

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