Samsung Display Co., Ltd.

Gwangteak Lee

Songyi Han

Won-hyoung Kang

Min-Soo Choi

Seongsik Choi

Jin-won Jang

Seunghwan Moon

Jin-Taek Hong

Yong-sik Hwang

Hwanwoong Lee

SeungYoung Choi

Seung-Wan Kim

Seung-wan Kim

Yong-Sik Jung

Jin-Won Jang

Won-Hyoung Kang

The present disclosure relates to a display device. The display device includes a substrate. The substrate includes a first display area, a second display area, a plurality of first pixels, a plurality of second pixels, and a plurality of diffraction patterns. The plurality of first pixels are disposed on the first display area. The plurality of second pixels are disposed on the second display area. The plurality of diffraction patterns are disposed on the second pixels When viewed in a plane orientation, an array density of the first pixels disposed in the first display area is greater than an array density of the second pixels disposed in the second display area.

Display device

A backlight unit includes a light source module including a first connection pin and a second connection pin electrically connected to the first connection pin, a power converter which provides a driving voltage to the light source module, a connector which receives a first enable signal via a first signal line and provides a second enable signal via a second signal line and a driving circuit which controls a generation of the driving voltage from the power converter in response to the second enable signal. When the connector is electrically connected to the first and second connection pins, the first enable signal is transmitted to the first connection pin via the first signal line and the connector, and the second enable signal from the second connection pin is provided to the driving circuit via the connector and the second signal line.

Backlight unit including connector for improved reliability, method of driving the same, and display device including the same

Provided is a display device including a plurality of light sources configured to be driven by a driving voltage, turned on during an on section, and turned off during an off section, a display panel configured to display an image by using light outputted from the light sources, a voltage converter connected to the light sources and configured to generate the driving voltage, and a backlight control circuit including a light source driving circuit and a voltage drop circuit. The light source driving circuit includes a pulse generator including a control input terminal configured to receive a first voltage during the on section and receive a second voltage during the off section and output a control pulse signal to control a level of the driving voltage based on a voltage applied to the control input terminal. The voltage drop circuit applies the second voltage to the control input terminal during the off section. The second voltage is smaller than the first voltage.

Display device and driving method thereof

A backlight unit includes a power supply converter including a primary winding connected to an input power supply voltage, and a secondary winding which is connected to an output node and outputs a light emitting diode drive voltage to the output node in response to a mode signal and a switching control signal; and a light emitting diode string connected to the output node of the power supply converter, where the power supply converter serially connects a boosting winding to the secondary winding and the output node and when the mode signal represents a three dimensional image display mode, and outputs a boosted light emitting diode drive voltage to the output node through the boosting winding.

Backlight unit and display device including the same

Growing community of inventors

Cheonan-si, South Korea

Gwangteak Lee