Lg Display Co., Ltd.

Seungjin Yoo

Kyujin Kim

Ooksang Yoo

Sangjin Nam

Taehun Kim

Dongwon Park

Wookyu Sang

Joonhee Lee

Byeongseong So

Yongchul Kwon

Juyoung Lee

Dongkyu Lee

Donggun Lee

Heejung Hong

Janghwan Kim

A display device is proposed, the display device including a display panel and a driving circuit, and pixels included in the display panel includes a driving transistor, a light emitting element, a capacitor, and first to sixth switching transistors Tto T. Tsenses threshold voltage of the driving transistor, the capacitor stores data voltage and a threshold voltage in both electrodes, Tapplies data voltage to the capacitor, Tinitializes the storage capacitor to reference voltage, and Tinitialize the light emitting element to reference voltage, Tcontrols current flow between the driving transistor and the light emitting element, and Tconnects both electrodes of the capacitor. The driving circuit divides one frame into an initialization period, a program period, and a light emission period to drive a pixel, and stops light emission of the light emitting device and make equal voltage across the capacitor, in the initialization period.

Display device

A display panel comprises a plurality of pixels into which pixel data of an input image is written; a plurality of data lines connected to the plurality of pixels; a plurality of photo sensors configured to sense light; a plurality of read-out lines connected to the plurality of photo sensors; and a plurality of gate lines connected to the pixels and the photo sensors, wherein the plurality of photo sensors comprises at least one first photo sensor to which a first bias voltage is supplied and at least one second photo sensor to which a second bias voltage different from the first bias voltage is supplied.

Display panel with photo sensor and display device using the same

The present disclosure relates to a compensation method of a display device and the display device having a compensation value storage unit, and more particularly, to a method of performing the compensation by changing a compensation density for pixels included in the display device, and the display device having a storage unit for storing a compensation value for performing the method. According to the present disclosure, the compensation method is provided that includes dividing a display panel into a foveated area and a non-foveated area; performing high-density compensation for a plurality of pixels in the foveated area; and performing low-density compensation for a plurality of pixels in the non-foveated area.

Compensation method of display device and display device having compensation value storage unit

A two-panel display device includes first source driver ICs arranged at one side of a first display area, supplying a first data voltage, second source driver ICs arranged at one side of a second display area arranged to adjoin the first display area, supplying a second data voltage, and at least one or more read out ICs arranged between the first display area and the second display area, being supplied with sensing voltages sensed in the first and second display areas, wherein the first source driver ICs are arranged in a direction opposite to the read out ICs with the first display area interposed therebetween, and the second source driver ICs are arranged in a direction opposite to the read out ICs with the second display area interposed therebetween.

Two-panel display device

A light valve panel and a liquid crystal display using the same are discussed. The light valve panel according to an aspect includes a liquid crystal layer, a first electrode receiving a light valve data voltage through a light valve data line, and a second electrode facing the first electrode with the liquid crystal layer interposed therebetween, and receiving a common voltage swinging in the same phase in synchronization with the light valve data voltage. The liquid crystal display device according to another aspect includes a display panel, a backlight unit, and a light valve panel.

Light valve panel and liquid crystal display using the same

A light valve panel and a liquid crystal display using the same are discussed. The light valve panel according to an aspect includes a liquid crystal layer, a first electrode including a block corresponding one-to-one with a light valve data line, and a second electrode facing the first electrode with the liquid crystal layer interposed therebetween. An angle between a vertical edge of the block and the light valve data line is greater than 0&#xb0; and less than 90&#xb0;. The liquid crystal display device according to another aspect includes a display panel, a backlight unit, and a light valve panel.

A touch sensor integrated type display device includes: a display panel including: pixels connected to data lines and gate lines and division-driven into a plurality of panel blocks, and a plurality of touch sensors connected to the pixels, a display driving circuit providing data of an input image to the pixels in multiple display periods divided from one frame period, and a touch sensing circuit driving the touch sensors and sensing a touch input in a touch sensing period allocated between the display periods of the frame period, adjacent panel blocks being division-driven in the display periods that are separated from each other with the touch sensing period, in which the touch sensors are driven, interposed therebetween, the display driving circuit including a shift register: shifting a gate pulse in accordance with a shift clock timing, and sequentially supplying the gate pulse to the gate lines.

Touch sensor integrated type display device and method of operating the same

A display device is disclosed. A display panel includes a plurality of subpixels of a plurality of colors arranged in a matrix form, and a plurality of gate lines and data lines respectively connected to the subpixels. A data driver is configured to supply data voltages to the subpixels through a plurality of source channels and the data lines. A switch circuit is configured to connect one of the source channels selectively to one of the data lines during a first scan period in one horizontal period and to a different one of the data lines during a second scan period in the one horizontal period. The data driver is configured to supply data voltages of one color to the one of the source channels during both the first scan period and the second scan period in the one horizontal period.

A mirror display is described. The mirror display includes a plurality of first electrodes disposed on a first substrate, a plurality of sensor lines disposed on the first substrate, the plurality of sensor lines connected to the plurality of first electrodes, a plurality of second electrodes disposed on a second substrate, the plurality of second electrodes facing the first substrate, a liquid crystal layer interposed between the plurality of first electrodes and the plurality of second electrodes, a plurality of mirror driving lines on the second substrate, the plurality of mirror driving lines connected to the plurality of second electrodes, and a reflective polarizing film attached to the second substrate.

Mirror display

A light valve panel and a liquid crystal display using the same are discussed. The light valve panel according to an embodiment includes a transparent electrode layer having a plurality of blocks supplied with a voltage through data input lines. The transparent electrode layer has a low resistance or has a high resistance. When a transparent electrode layer has low resistance, each block is divided into a plurality of segment electrodes connected through a resistance pattern. A voltage is distributed to the plurality of segment electrodes of each block based on the resistance pattern. When a transparent electrode layer has high resistance, the voltage distribution in each block is based on a resistance difference that varies based on a distance between voltage feeding positions.

A display device includes a pixel array having a plurality of pixels arranged in a matrix form based on a crossing structure of data lines and gate lines, a data driver having a plurality of output channels and configured to output a data voltage, a multiplexer configured to distribute the data voltage output from the data driver to the data lines in response to first and second control signals, and a gate driver configured to output a gate pulse synchronized with the data voltage in a non-sequential manner. The first and second control signals are in antiphase, and a switching cycle of the first and second control signals is one horizontal period or two horizontal periods.

Growing community of inventors

Paju-si, South Korea

Seungjin Yoo