US 12,242,144 B2
Display device
Kengo Konuma, Fukushima (JP)
Assigned to ALPS ALPINE CO., LTD., Tokyo (JP)
Filed by ALPS ALPINE CO., LTD., Tokyo (JP)
Filed on Mar. 11, 2024, as Appl. No. 18/601,702.
Claims priority of application No. 2023-041638 (JP), filed on Mar. 16, 2023.
Prior Publication US 2024/0310666 A1, Sep. 19, 2024
Int. Cl. G02F 1/133 (2006.01); G02F 1/1333 (2006.01); G02F 1/1345 (2006.01); G02F 1/1368 (2006.01); G06F 3/041 (2006.01)
CPC G02F 1/13306 (2013.01) [G02F 1/13338 (2013.01); G02F 1/13452 (2013.01); G02F 1/1368 (2013.01); G06F 3/0412 (2013.01); G06F 3/04166 (2019.05)] 12 Claims
OG exemplary drawing
 
1. A display device including a liquid crystal display (LCD) panel configured such that common electrodes to which a potential based on a ground level is applied, liquid crystal, and pixel electrodes are stacked, and a display driver for driving the pixel electrodes of the LCD panel, the display device comprising:
a power source section configured to supply a power source used by the display driver to drive the pixel electrodes;
a capacitor having one end connected to wiring of the power source between the power source section and the display device; and
an impedance device disposed between the other end of the capacitor and the ground of the display device;
wherein the capacitor and the impedance device have such impedance characteristics that a DC component is blocked and impedance in a predetermined frequency band set as a frequency band in which ground noise is generated is reduced.