Lg Display Co., Ltd.

Hanwha Techwin Co., Ltd.

SeonYeong Kim

JaeHoon Park

Sungjin Lee

YoungJang Lee

TaeHyoung Moon

Jaesung Yu

SeungMin Cho

ChongHan Park

SunAe Seo

SoMyeong Shin

Aram Kim

TaeKwang Kim

A display device can include a display panel including a plurality of data lines, a plurality of scan lines, a plurality of light emission control lines, and a plurality of sub-pixels; a first driving circuit configured to drive the plurality of data lines; a second driving circuit configured to drive the plurality of scan lines; and a third driving circuit configured to drive the plurality of light emission control lines, in which the display panel includes an active area in which an image is displayed and a non-active area which is an edge area of the active area.

Display device and display panel

The present disclosure relates to ultrasonic sensors, ultrasonic sensing devices and display devices. The ultrasonic sensor includes an array of thin film transistors in which first electrodes are disposed, a piezoelectric material, and second electrodes. In order to generate ultrasonic waves and perform sensing, the second electrode is disposed in a patterned structure in which the second electrode is divided into multiple second electrodes, and a high voltage in the form of pulse is applied to the second electrode. Thus, in accordance with embodiments of the present disclosure, a high voltage is not applied to the array of thin film transistors; therefore, it is possible to reduce or overcome degradation of circuit elements disposed in the array of thin film transistors. Accordingly, it is possible to improve the reliability and lifetime of the circuit elements disposed in the array of thin film transistors, while performing sensing.

Ultrasonic sensor, ultrasonic sensing device and display device

The pixel circuit which controls the driving of the organic light emitting diode includes a driving TFT which supplies a driving current to the organic light emitting diode; a sampling TFT which samples a threshold voltage of the driving TFT; a first initializing TFT which supplies an initialization voltage to one electrode of the organic light emitting diode; and a storage capacitor which stores a voltage applied to the driving TFT, and at least one of the driving TFT, the sampling TFT, and the first initializing TFT includes a shielding electrode disposed between the substrate and the active layer. Therefore, even though the external light is irradiated onto a transparent substrate, a full white gray-level and a full black gray-level can be expressed so that the gray-level expressiveness may not be degraded.

Organic light emitting display device

A display panel and a display device. A driving voltage line disposed in an active area is disposed to overlap a reference voltage line. The aperture ratio of a display panel is improved, and the transparency of a transparent display device is improved. The width of the driving voltage line disposed in the display panel gradually decreases in a direction away from a driver circuit supplying a driving voltage. Differences in the variation of the driving voltage according to the areas of the display panel are reduced, thereby improving brightness uniformity of the display panel according to the areas of the display panel.

Display panel and display device

A display panel having a display area where an image is displayed and a non-display area outside the display area, comprising first and second gate drive units disposed in a first outer area and a second outer area of the non-display area corresponding to both sides of the display area in a horizontal direction. Here, the first gate drive unit disposed in the first outer area includes a first signal block supplying a first drive control signal to respective horizontal lines having pixels, which are arranged successively in the horizontal direction, of the plurality of pixels and a second signal block supplying a second drive control signal having pulses different from those of the first drive control signal to the respective horizontal lines, and the second gate drive unit disposed in the second outer area includes the second signal block and a third signal block supplying a third drive control signal having pulses different from those of the first and second drive control signals to the respective horizontal lines.

Display panel

Provided are a method of preparing a graphene-based thin-film laminate and the graphene-based thin-film laminate prepared by using the method. The method may include repeating following operations 60 times or less, the cycle including: (a) to (d) processes described above, a graphene-based thin-film laminate prepared using the same, and an electrode and electronic device including the graphene-based thin-film laminate.

Growing community of inventors

Seoul, South Korea

SeonYeong Kim