Semiconductor device with chip layout having inner electrode configuration and liquid crystal display apparatus employing the semiconductor device
US5585666A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 1994 |
| Grant date | Dec 17, 1996 |
| Priority date | — |
| Expiry date | Dec 19, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/3011
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.