Patent ID: 11967363
Assignee: AP MEMORY TECHNOLOGY CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 13:
14. A display system, comprising:
a display device; and
a display controller, coupled to and configured to control the display device, and the display controller comprising:
a first chip, configured to control the display device; and
a second chip, externally coupled to the first chip, and configured to be a random access memory; and
a protection circuit, comprising a first portion and a second portion;

wherein the first chip is further configured to provide a first supply power to the second chip according to a second supply power received externally and to access the second chip during the controlling of the display device;
wherein the protection circuit is configured to reduce an effect caused by a surge of the second supply power on the first supply power, the first portion is configured to be an electrostatic discharge (ESD) circuit and formed in the first chip, and the second portion is configured to be a low pass filter and coupled to the first chip and the second chip; and
wherein the first chip at least comprises a first pad, a second pad, and a third pad, the second chip at least, comprises a fourth pad and a fifth pad, the first pad is arranged to receive the second supply power, the fourth pad is arranged to receive the first supply power, the first portion is coupled between the first pad and the second pad, and the second portion is coupled to the first pad, the third pad, the fourth pad, and the fifth pad.