| 摘要 |
The invention provides a shift register which can function normally even with an abnormal register or a broken register while suppressing the manufacturing cost as little as possible. The shift register of the invention includes n regular registers (SR( 1 ) to SR(n)) connected in series and n output lines (L 1 to Ln) corresponding to the n regular registers, r (r<=n) redundant registers (SR(n+1) to SR(n+r)) connected in series to the n regular registers, and a switch circuit for selectively connecting the regular and redundant resistors to output lines. The switch circuit connects the n regular registers to the corresponding output lines in a normal state, connects normal registers of upper and lower stages of the broken register by skipping and disabling the broken register if any, and connects normal regular registers and the same number of redundant registers as the broken registers to the n output lines.
|
