Lg Display Co., Ltd.

Kimin Son

Seok Noh

Kyung-Rok Kim

Haejin Park

Taegung Kim

Insu Hwang

EunJi Park

Myungho Ban

Joondong Kim

Dongyoon Lee

Inhyo Han

Changhee Kim

Eunji Song

Injune Kim

A display device is disclosed. The display device comprises: a driving transistor drives a light emitting element; a scanning transistor connected between a first node of the driving transistor and a data line; and a sensing transistor connected between a second node of the driving transistor and a reference voltage line, wherein a period of time during which a characteristic value of the sensing transistor is sensed includes a voltage control period, a voltage tracking period, and a sampling period, and during the voltage control period, a first sensing voltage is supplied to the data line, a second sensing voltage is supplied to a third node of the driving transistor, a third sensing voltage is supplied to gate nodes of the scanning transistor and the sensing transistor, and a fourth sensing voltage is supplied to the reference voltage line. Accordingly, changes of characteristic values of the sensing transistor are sensed.

Display device and driving method

A data driving circuit and a display device are provided. A display device includes: a display panel including a plurality of subpixels, each of the plurality of subpixels including: a light-emitting device, and a driving transistor configured to drive the light-emitting device, and a data driving circuit configured to: supply a data voltage to the plurality of subpixels, and supply, in a display period, to at least one subpixel among the plurality of subpixels: the data voltage, obtained by adding a first voltage corresponding to a luminance of the light-emitting device, and a second voltage smaller than a change value of a threshold voltage of the driving transistor.

Data driving circuit and display device

The light emitting display apparatus includes a substrate including a display area including a plurality of pixel areas and a non-display area surrounding the display area, a plurality of gate lines passing through the display area of the substrate, a plurality of data lines passing through the display area of the substrate, a plurality of pixel driving power lines passing through the display area of the substrate, a plurality of pixels respectively provided in the plurality of pixel areas of the substrate and connected to an adjacent gate line, an adjacent data line, and an adjacent pixel driving power line, and a gate buffer provided in the display area of the substrate and connected to a corresponding gate line of the plurality of gate lines.

Light emitting display apparatus

Disclosed is a display apparatus. The display apparatus includes a substrate, a first wiring part on the substrate, a first insulation layer on the first wiring part, a microchip on the first insulation layer, a second wiring part on the microchip, and an organic light emitting device on the second wiring part. The microchip includes a first surface and a second surface opposite to each other, a first pad part on the first surface, and a second pad part on the second surface. The first pad part is connected to the first wiring part, and the second pad part is connected to the second wiring part.

Display apparatus including microchip

A current sensing device and an organic light emitting display device including the same are disclosed. The current sensing device includes a sensing unit selectively connected to a pixel and a reference current source through a sensing line. The sensing unit includes a plurality of resistors connected to a first node and setting a divided voltage according to a pixel current input from the pixel and a reference current input from the reference current source, a first MOS transistor connected between the first node and a second node, a second MOS transistor diode-connected to the second node, and a comparator having an inverting input terminal connected to a third node, a non-inverting input terminal connected to a fourth node, comparing a reference voltage charged at the third node when the reference current is input and a pixel voltage charged at the fourth node when the pixel current is input, and outputting a comparison result.

Current sensing device and organic light emitting display device including the same

The display apparatus may include gate lines passing through a display area of a substrate, data lines passing through the display area of the substrate, pixel driving power lines passing through the display area of the substrate, a plurality of pixels having a pixel driving chip mounted on at least one pixel area defined on the substrate and connected and connected to an adjacent gate line and data line and a light emission part connected to the pixel driving chip, a gate driving chip array part mounted in a non-display area of the substrate and connected to the gate lines, and a data driving chip array part mounted in the non-display area of the substrate and connected to the data lines.

Display apparatus

A gate driver includes a gate shift register in which an A block and a B block each having a plurality of stages, the A block and the B block being alternately arranged; scan clock lines inputting a first scan clock group and a second scan clock group each including both image data writing (IDW) scan clocks synchronized with an image write timing and black data insertion (BDI) scan clocks synchronized with a black write timing to the A block and the B block; and carry clock lines inputting carry clocks to the A block and the B block and sense clock lines inputting sense clocks to the A block and the B block, wherein each of the stages belonging to the A block and the B block includes a BDI memory storing a BDI carry signal for outputting the BDI scan clocks.

Gate driver and display device including the same

A display device comprises: a pixel array including pixels connected to gate lines; a gate driver that sequentially supplies scan signals to the gate lines by using a plurality of stages connected in cascade; and a driving voltage generator that supplies first and second driving voltages to the gate driver and inverts the first and second driving voltages of opposite phases at given intervals, wherein an nth stage (n is a natural number), among the stages of the gate driver, comprises: a start controller that charges a Qnode in a period when an (n&#x2212;1)th scan signal and a first clock signal are synchronized, and charges a QB node in a period when an (n&#x2212;1)th carry signal, opposite in phase to the (n&#x2212;1)th scan signal, and the first clock signal are synchronized; a first node controller that charges a Qnode or a QB node in response to a voltage at the Qnode; a first output control transistor that outputs an nth scan signal through a Q node in response to a voltage at the Qnode; and a second output control transistor that charges the Q node with the second driving voltage in response to a voltage at the QB node.

Display device

A display device and a method of driving the same are disclosed. The display device includes a display panel configured to display an image, a plurality of data lines arranged in a first diagonal direction of the display panel, a plurality of scan lines arranged in a second diagonal direction intersecting the first diagonal direction of the display panel, a plurality of data drivers connected to the plurality of data lines, and a plurality of scan drivers connected to the plurality of scan lines.

Growing community of inventors

Osan-si, South Korea

Kimin Son