US 12,482,403 B2
Power-supply adjusting circuit and display terminal
Han Wu, Guangdong (CN); and Haijiang Yuan, Guangdong (CN)
Assigned to HKC CORPORATION LIMITED, Guangdong (CN)
Filed by HKC Corporation Limited, Guangdong (CN)
Filed on Apr. 12, 2024, as Appl. No. 18/634,330.
Claims priority of application No. 202310460183.4 (CN), filed on Apr. 20, 2023.
Prior Publication US 2024/0355264 A1, Oct. 24, 2024
Int. Cl. G09G 3/20 (2006.01); G06F 1/26 (2006.01); G06F 1/30 (2006.01); G09G 3/3283 (2016.01); G09G 3/3291 (2016.01); G09G 3/36 (2006.01)
CPC G09G 3/2096 (2013.01) [G06F 1/26 (2013.01); G06F 1/30 (2013.01); G09G 3/3283 (2013.01); G09G 3/3291 (2013.01); G09G 3/3696 (2013.01); G09G 2320/0223 (2013.01); G09G 2330/021 (2013.01); G09G 2330/028 (2013.01); G09G 2330/04 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A power-supply adjusting circuit applicable to a display panel for image display, wherein the power-supply adjusting circuit is connected to a driving power output terminal of a power-supply circuit, the power-supply circuit is configured to output driving power to a plurality of data driving circuits of the display panel via the driving power output terminal; and the power-supply adjusting circuit is configured to receive reverse current and absorb-and-store the reverse current or the power-supply adjusting circuit is configured to receive the reverse current and discharge the reverse current to a ground terminal, when the power-supply adjusting circuit detects that the reverse current is input via the driving power output terminal;
wherein the power-supply adjusting circuit comprises a detecting circuit, a first adjusting circuit, an energy storage circuit, and a second adjusting circuit;
wherein the detecting circuit is connected to the driving power output terminal, the first adjusting circuit is connected to the detecting circuit and the energy storage circuit, and the second adjusting circuit is connected to the energy storage circuit;
wherein the driving power output terminal is electrically connected to the plurality of data driving circuits via a power transmission line, the detecting circuit comprises a first resistor, a first node, and a second node, the first node and the second node are two nodes at different positions in the power transmission line, the first resistor is connected in the power transmission line via the first node and a second node, the first node is disposed at one end of the first resistor away from the power-supply circuit, and the second node is located at one end of the first resistor close to the power-supply circuit; and
wherein the detecting circuit further comprises a comparator, the comparator has comparison input ends connected to the first node and the second node respectively, the comparator is configured to detect and compare a voltage at the first node and a voltage at the second node; and the comparator is configured to output the first control signal from a first comparison output terminal to the first adjusting circuit in response to detecting that the voltage at the first node is greater than the voltage at the second node, and the comparator is configured to output the second control signal from a second comparison output terminal to the second adjusting circuit in response to detecting that the voltage at the second node is greater than the voltage at the first node.