Lg Display Co., Ltd.

Ki Tae Kwon

Yong Won Jo

Yong Hwa Park

Jong Wook Jang

A power circuit can include a direct current to direct current converter configured to output a first voltage; a digital-to-analog converter configured to convert input data to an analog voltage and output a second voltage; and a voltage regulating circuit configured to receive the first voltage and the second voltage as inputs and output a voltage in which the second voltage is added to the first voltage, and reduce a slope of the voltage. Also, the input data to the digital-to-analog converter is updated during one horizontal period of a display device, and the voltage regulating circuit is further configured to commonly supply the voltage to pixels of the display device.

Display device having a voltage regulating circuit for outputting to pixel circuit

A display panel can include a plurality of first pixel circuits configured to receive a pixel driving voltage and a reference voltage for displaying an image; and a plurality of second pixel circuits including a power line supplied with the pixel driving voltage and a reference voltage line supplied with the reference voltage, the plurality of second pixel circuits being configured to short-circuit the power line to the reference voltage line for at least some amount of time within a vertical blank period. Also, the plurality of second pixel circuits can maintain uniform luminance of the plurality of first pixel circuits.

Display panel and display device including the same

A display device receives a feedback signal for a pulse signal supplied to a display panel, senses a pulse width of a scan signal, and changes one or both of a pulse width of the shift clock and a pulse voltage of the shift clock for each screen position of the display panel in response to a pulse width of the feedback signal.

Growing community of inventors

Paju-si, South Korea

Ki Tae Kwon