US 12,469,448 B2
Display device and driving method of the same
Chang Duk Ha, Paju-si (KR); and Jae Young Kim, Paju-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Jan. 23, 2024, as Appl. No. 18/420,470.
Claims priority of application No. 10-2023-0011008 (KR), filed on Jan. 27, 2023.
Prior Publication US 2024/0257738 A1, Aug. 1, 2024
Int. Cl. G09G 3/3233 (2016.01)
CPC G09G 3/3233 (2013.01) [G09G 2300/0426 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0852 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/045 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising: a display panel including a subpixel, the subpixel including a compensation circuit and a driving transistor, wherein the compensation circuit is configured to compensate for a driving current generated from the driving transistor based on a compensation voltage input from outside of the sub-pixel, and wherein the compensation circuit comprises: a compensation transistor configured to transmit the compensation voltage; and a compensation capacitor configured to store the compensation voltage output through the compensation transistor, and wherein the compensation capacitor has a first electrode electrically connected to an anode of a light-emitting diode included in the subpixel, and wherein the first electrode of the compensation capacitor overlaps with the anode of the light-emitting diode.
 
15. A method of driving a display device comprising a display panel comprising a plurality of subpixels, the method comprising: compensating for a threshold voltage of a driving transistor included in each of a plurality of subpixels included in the display device; applying a compensation voltage to the plurality of subpixels to compensate for driving current deviation between the plurality of subpixels; and causing the plurality of subpixels to emit light, wherein the compensation voltage is applied to each of the plurality of subpixels by an operation of a compensation circuit, and wherein the compensation circuit comprises: a compensation transistor configured to transmit the compensation voltage; and a compensation capacitor configured to store the compensation voltage output through the compensation transistor, wherein the compensation capacitor has a first electrode electrically connected to an anode of a light-emitting diode included in the subpixel, and wherein the first electrode of the compensation capacitor overlaps with the anode of the light-emitting diode.
 
18. A display device comprising: a display panel including a subpixel, the subpixel including a compensation circuit and a driving transistor, wherein the compensation circuit is configured to compensate for a driving current generated from the driving transistor based on a compensation voltage input from outside of the sub-pixel, and wherein the compensation circuit comprises: a compensation transistor configured to transmit the compensation voltage; and a compensation capacitor configured to store the compensation voltage output through the compensation transistor, wherein the compensation capacitor has a first electrode electrically connected to an anode of a light-emitting diode included in the subpixel, and wherein the compensation capacitor comprises the anode of the light-emitting diode, the first electrode, and an insulating material layer located between the anode and the first electrode.