US 12,431,099 B1
Charge cancellation to minimize transient ripple
Jonathan D Paolucci, Santa Clara, CA (US); Jingdong Chen, San Jose, CA (US); Jason N Gomez, Campbell, CA (US); Yanhui Xie, Cupertino, CA (US); Nathan Y Tang, Oakland, CA (US); Kevin Ho, San Jose, CA (US); and Bo Xu, Saratoga, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Sep. 26, 2024, as Appl. No. 18/897,513.
Int. Cl. G09G 3/3291 (2016.01)
CPC G09G 3/3291 (2013.01) [G09G 2300/0819 (2013.01); G09G 2310/0291 (2013.01); G09G 2320/0209 (2013.01); G09G 2320/0219 (2013.01); G09G 2320/0223 (2013.01); G09G 2330/028 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A display system for an electronic device, the display system comprising:
a power supply that supplies power to a display panel via a power delivery network;
wherein the display panel further comprises:
one or more power rails that receives power from the power supply at a power input of the display panel via the power delivery network;
row programming circuitry that receives drive signals from a display driver; and
a plurality of data lines connecting the row programming circuitry to pixels of the display panel, wherein the data lines are capacitively coupled to the one or more power rails via parasitic capacitance associated with the layout of the display panel;
the display system further comprising a charge injection circuit coupled to the power input of the display panel by an injection capacitance, wherein the charge injection circuit receives an input signal corresponding to the drive signals from the display driver and generates an inverted output signal that is delivered to the power input of the display panel via the injection capacitance.