Maintenance circuit for display panel

摘要

A maintenance circuit for a display panel, the display panel being divided by a plurality of source driver integrated circuits into a plurality of partitions(X1-X8) corresponding thereto, wherein each of source driver integrated circuits controls one partition, each four of adjacent partitions form a group of partitions, each of the maintenance circuit units comprises: a first maintenance line(RP1, RP3) and a second maintenance line(RP2, RP4) each provided with a half-turn shape surrounding around a group of partitions corresponding thereto; a first operational amplifier(OP1, OP3) and a second operational amplifier(OP2, OP4), the inverting input terminal of each of which is connected to an output terminal thereof and is connected to a corresponding maintenance line; and a plurality of resistors(R1-R8, L1-L8) selectively connected in accordance with two partitions of the group of the partitions to be maintained, so as to respectively import the two partitions to non-inverting input terminals of the two operational amplifiers via signals outputted from a corresponding source driver integrated circuits, and to feed the signals outputted from the two operational amplifiers back to the corresponding partitions.

主权项

1. A maintenance circuit for a display panel for maintaining broken lines occurred in the display panel, the display panel being divided by a plurality of source driver integrated circuits into a plurality of partitions corresponding thereto, wherein each of the source driver integrated circuits is configured to control one partition, each four of adjacent the partition are configured to form a group of partitions, the maintenance circuit for the display panel comprises a plurality of maintenance circuit units independent of each other, each of the maintenance circuit units corresponds to a group of partitions and is configured to maintain this group of the partitions, and each of the maintenance circuit units comprises:
a first maintenance line and a second maintenance line surrounding around a group of partitions corresponding thereto; a first operational amplifier and a second operational amplifier, an inverting input terminal of each of which is connected to an output thereof and is connected to a corresponding maintenance line; and a plurality of resistors selectively connected in accordance with two partitions of the group of the partitions to be maintained, so as to respectively import the two partitions to be maintained to non-inverting input terminals of the two operational amplifiers via signals outputted from corresponding source driver integrated circuits respectively, and to feed signals outputted from the two operational amplifiers back to the corresponding partitions; wherein each of the maintenance circuit units comprises a first resistor, a second resistor, a third resistor and a fourth resistor, and each group of the partitions comprises a first partition, a second partition, a third partition and a fourth partition; the first partition is connected to the non-inverting input terminal of the first operational amplifier through a first signal output terminal imported from the source driver integrated circuit corresponding thereto; the second partition is connected to a second terminal of the third resistor and a second terminal of the fourth resistor through a second signal output terminal imported from the source driver integrated circuit corresponding thereto, a first terminal of the third resistor is connected to a non-inverting input terminal of the first operational amplifier, and the first terminal of the fourth resistor is connected to the non-inverting input terminal of the second operational amplifier; the third partition is connected to a second terminal of the first resistor and a second terminal of the second resistor through a third signal output terminal imported from the source driver integrated circuit corresponding thereto, a first terminal of the first resistor is connected to a non-inverting input terminal of the second operational amplifier, and a first terminal of the second resistor is connected to the non-inverting input terminal of the first operational amplifier; the fourth partition is connected to the non-inverting input terminal of the second operational amplifier through a fourth signal output terminal imported from a source driver integrated circuit corresponding thereto; an output terminal of the first operational amplifier is connected to the second maintenance line; and an output terminal of the second operational amplifier is connected to the first maintenance line.