US 11,967,260 B2
Display device with power management circuit for transforming period
Jinwon Kim, Paju-si (KR); and MooKyoung Hong, Paju-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Nov. 3, 2022, as Appl. No. 17/980,195.
Claims priority of application No. 10-2021-0191004 (KR), filed on Dec. 29, 2021.
Prior Publication US 2023/0206798 A1, Jun. 29, 2023
Int. Cl. G09G 3/00 (2006.01); G09G 3/20 (2006.01); G09G 3/3233 (2016.01); G09G 3/3283 (2016.01); G09G 3/32 (2016.01)
CPC G09G 3/035 (2020.08) [G09G 3/2074 (2013.01); G09G 3/3233 (2013.01); G09G 3/3283 (2013.01); G09G 3/32 (2013.01); G09G 2300/0408 (2013.01); G09G 2300/0426 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01); G09G 2330/021 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel including one or more sub-pixels in a display area, the one or more sub-pixels having a light emitting device and a driving transistor configured to drive the light emitting device, and the display panel having a shape that is changed during a transforming period;
a timing controller configured to receive image data and a command signal defining the transforming period, the timing controller configured to convert the image data to output converted image data;
a data driving circuit configured to receive the converted image data and output a data voltage; and
a power management circuit configured to output a first initialization voltage applied to a first initialization voltage supply node and a low potential driving voltage to the display panel,
wherein, in the transforming period, at least one sub-pixel emits light based on the image data input to the timing controller, and emits light with a luminance that is less than a luminance corresponding to a grayscale of the image data,
wherein the command signal defines a transforming period and a normal state in which the shape of the display panel is fixed,
wherein a voltage level of the first initialization voltage output by the power management circuit during the transforming period is greater than a voltage level of the first initialization voltage output by the power management circuit in the normal state.