US 12,322,348 B2
Low-power active matrix display with row and/or data driver energy recycling techniques
Sheida Gohardehi, Waterloo (CA); and Manoj Sachdev, Waterloo (CA)
Filed by Sheida Gohardehi, Waterloo (CA); and Manoj Sachdev, Waterloo (CA)
Filed on Oct. 31, 2023, as Appl. No. 18/385,570.
Claims priority of provisional application 63/421,701, filed on Nov. 2, 2022.
Prior Publication US 2024/0144887 A1, May 2, 2024
Int. Cl. G09G 3/3275 (2016.01)
CPC G09G 3/3275 (2013.01) [G09G 2300/0852 (2013.01); G09G 2310/08 (2013.01); G09G 2330/023 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A system for recycling energy in an active matrix display comprising:
an array of pixels, the array of pixels arranged in an N×M configuration where N represents a number of pixel rows and M represents a number of pixel columns;
a set of data lines, each data line associated with an individual pixel column;
a set of row lines, each row line associated with an individual pixel row;
a set of row capacitors, each row capacitor associated with one of the set of row lines;
a set of switches, each switch associated with one of the set of row lines;
a capacitor bank connected to each of the set of row lines for storing charge from one of the set of capacitors and sharing the charge with another of the set of capacitors; and
a signal generator for generating and transmitting a switch enable signal to at least one of the set of switches to isolate its associated row line for a period of time whereby, during the period of time, charge stored in the row capacitor associated with a same row line is passed from the associated row line to a row capacitor of another row line of the set of row lines.