US 2024/0257686 A1 · Display Apparatus and Driving Power Control Method Thereof

Abstract

A display apparatus includes a display panel; a gate driver configured to drive gate lines of the display panel, the gate driver including gate stages that are connected to a power line that supplies an output voltage to the gate stages; a comparator circuit coupled with the gate driver through a feedback line, the comparator circuit configured to compare a first divided voltage of a first node of the comparator circuit that is based on a feedback current in the feedback line and a second divided voltage of a second node of the comparator circuit that based on a reference voltage, and supply the output voltage to a third node of the comparator circuit that is connected to the power line, the output voltage based on the comparison between the first divided voltage and the second divided voltage.

Claims20

Dependent claims

A display apparatus comprising:

a display panel including gate lines, data lines, and pixels connected to the gate lines and the data lines;
a gate driver configured to drive the gate lines of the display panel, the gate driver including a plurality of gate stages that are connected to a power line that supplies an output voltage to the plurality of gate stages;
and
a comparator circuit coupled with the gate driver through a feedback line, the comparator circuit configured to compare a first divided voltage of a first node of the comparator circuit that is based on a feedback current in the feedback line and a second divided voltage of a second node of the comparator circuit that is based on a reference voltage, and supply the output voltage to a third node of the comparator circuit that is connected to the power line, the output voltage based on the comparison between the first divided voltage and the second divided voltage.

1 more element

A driving power control method of a display apparatus including a gate driver driving gate lines of a display panel where the gate driver includes a plurality of gate stages that are connected to a power line that supplies an output voltage to the plurality of gate stages, the driving power control method comprising:

comparing, by a comparator circuit that is coupled with the gate driver, a first divided voltage of a first node of the comparator circuit that is based on a feedback current in a feedback line that is connected to the gate driver and a second divided voltage of a second node of the comparator circuit that is based on a reference voltage;
and
supplying the output voltage to a third node of the comparator circuit that is connected to the power line, the output voltage based on the comparison between the first divided voltage and the second divided voltage.

A display apparatus comprising:

a display panel including gate lines, data lines, and pixels connected to the gate lines and the data lines;
a data driver configured to provide data voltages to the data lines;
a power line that supplies a source voltage;
a gate driver including a plurality of gate stages having output nodes connected to the gate lines and a monitoring stage having an output node that is not connected to the gate lines, the plurality of gate stages and the monitoring stage connected to the power line and receive the source voltage from the power line;
a feedback line connected to the output node of the monitoring stage;
and
a driving power control circuit that is connected to the feedback line, the driving power control circuit configured to output the source voltage to the power line that is connected to the monitoring stage and the plurality of gate stages based on a comparison of a first voltage that is dependent on a feedback current in the feedback line and a second voltage that is dependent on a reference voltage supplied to the driving power control circuit,
wherein the driving power control circuit is further configured to adjust a voltage level of the reference voltage based on the source voltage output by the driving power control circuit being outside of a target voltage range.

5 more elements

Dependencies are inferred from the claim text.

Display Apparatus and Driving Power Control Method Thereof

Life of this patent

Display Apparatus and Driving Power Control Method Thereof

Life of this patent

Abstract

Claims20