US 12,380,861 B2
Source amplifier control for power consumption reduction in display drivers
Atsushi Maruyama, Tokyo (JP)
Assigned to Synaptics Incorporated, San Jose, CA (US)
Filed by Synaptics Incorporated, San Jose, CA (US)
Filed on Oct. 24, 2023, as Appl. No. 18/493,091.
Prior Publication US 2025/0131888 A1, Apr. 24, 2025
Int. Cl. G09G 3/3291 (2016.01)
CPC G09G 3/3291 (2013.01) [G09G 2300/0819 (2013.01); G09G 2310/027 (2013.01); G09G 2310/0291 (2013.01); G09G 2320/0276 (2013.01); G09G 2330/021 (2013.01); G09G 2330/028 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display driver, comprising:
a first source output coupled to a display panel;
a second source output coupled to the display panel;
a first source amplifier configured to:
provide a first data voltage to the first source output based on first pixel data during a display update period; and
provide a predetermined voltage to the first source output during a non-display update period, wherein the predetermined voltage corresponds to a voltage level which reduces charge leakage from storage capacitors of pixels of the display panel during the non-display update period, the pixels being coupled to the first and second source outputs;
a second source amplifier configured to:
provide a second data voltage to the second source output based on second pixel data during the display update period; and
be deactivated during the non-display update period; and
a first switch configured to electrically connect an output of the first source amplifier to the second source output to provide the predetermined voltage to the second source output during the non-display update period.