US 11,875,716 B2
Dual source drivers, display devices having the same, and methods of operating the same
Sungho Lee, Hwaseong-si (KR); Hohak Rho, Seongnam-si (KR); and Junjae Lee, Seongnam-si (KR)
Assigned to Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Mar. 10, 2022, as Appl. No. 17/691,584.
Application 17/691,584 is a continuation of application No. 16/928,480, filed on Jul. 14, 2020, granted, now 11,315,462.
Claims priority of application No. 10-2019-0176979 (KR), filed on Dec. 27, 2019.
Prior Publication US 2022/0198983 A1, Jun. 23, 2022
Int. Cl. G09G 3/20 (2006.01)
CPC G09G 3/20 (2013.01) [G09G 2310/0291 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0673 (2013.01); G09G 2330/023 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An operating method of a display device, the display device including a first driving cell and a second driving cell, the method comprising,
latching first data at a first line time period;
latching second data at a second line time period;
converting the first data to a first voltage with a first digital-to-analog converter in a latency operation;
amplifying the first voltage with a first output amplifier within 2-line time in a charging operation;
converting the second data to a second voltage by a second digital-to-analog converter;
amplifying the second voltage in a second output amplifier within 2-line time;
outputting the amplified first voltage to a single source line within 1-line time overlapping the converting the first data to the first voltage with the first digital-to-analog converter; and
outputting the amplified second voltage to the single source line within 1-line time,
wherein the first driving cell and the second driving cell are connected to the single source line in parallel, such that
the first driving cell outputs the amplified first voltage to the single source line within 1-line time in the charging operation concurrently with the second driving cell performing the latency operation based on a first switching operation, and
the second driving cell outputs the amplified second voltage to the single source line within 1-line time in the charging operation concurrently with the first driving cell performing the latency operation based on a second switching operation,
wherein the first switching operation and the second switching operation operate complementarily to each other.