US 12,307,957 B2
Display driving circuit
Min-Nan Liao, Jhubei (TW)
Assigned to Sitronix Technology Corp., Jhubei (TW)
Filed by SITRONIX TECHNOLOGY CORP., Jhubei (TW)
Filed on Jul. 22, 2019, as Appl. No. 16/518,026.
Claims priority of provisional application 62/701,040, filed on Jul. 20, 2018.
Prior Publication US 2020/0193901 A1, Jun. 18, 2020
Int. Cl. G09G 3/32 (2016.01); G09G 3/3225 (2016.01)
CPC G09G 3/3225 (2013.01) [G09G 2310/0243 (2013.01); G09G 2310/027 (2013.01); G09G 2330/028 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A display driving circuit, comprising:
a power circuit, receiving an input voltage, said input voltage being the electrical potential difference between a first input electrical potential and a second input electrical potential, producing a first reference electrical potential and a second reference electrical potential according to said first input electrical potential and said second input electrical potential, producing only a first supply electrical potential and only a second supply electrical potential according to said first input electrical potential said second input electrical potential, said first reference electrical potential and said second reference electrical potential for providing a supply voltage, said supply voltage being the electrical potential difference between said first supply electrical potential and said second supply electrical potential, said first supply electrical potential being higher than said second supply electrical potential, and said second supply electrical potential being between said first input electrical potential and said second input electrical potential, said first reference electrical potential being higher than said second reference electrical potential; and
a panel driving circuit, coupled to said first supply electrical potential and said second supply electrical potential of said power circuit for receiving said supply voltage and generating a plurality of driving signals;
wherein said panel driving circuit includes:
a gamma circuit directly coupled to said first supply electrical potential and said second supply electrical potential of said power circuit, and producing a plurality of gamma voltages solely based upon the difference of said first and said second supply electrical potentials;
a plurality of digital-to-analog converters, coupled to said gamma circuit, receiving said gamma voltages and a plurality of pixel data, and selecting said gamma voltages according to said pixel data for generating a plurality of pixel signals; and
a plurality of buffer circuits, coupled to said digital-to-analog converters, and buffering said pixel signals for generating said driving signals.