Lg Display Co., Ltd.

NamYong Gong

Youngsoo Lee

SungPil Choi

Jinyeol Kim

Jongsung Kim

HyungUk Jang

YoungGyu Kim

DoYoung Jung

Byoungchul Cho

Hyunsuk Cho

Sohee Choi

Junghoon Lee

SangHyuck Bae

Sohyung Lee

NamSeok Lee

Jungyul Yang

SungSoo Shin

Heesung Lee

Sangjae Park

HyunJun Min

JinYeol Kim

Sungsoo Shin

Discussed is a touch display device and a touch sensing method. More particularly, according to the number of pens that have been paired, the frame can be reconfigured by changing the type of all or part of the multiple touch time periods in the frame, and it is possible to provide high-speed pen search and pen pairing by designing a highly scalable pen protocol to flexibly change the pen mode.

Touch display device and touch sensing method

Embodiments of the present disclosure relate to a touch circuit, a touch display device, and a touch driving method, and more specifically, to a touch circuit, a touch display device, and a touch driving method for simply configuring a system for transmitting signals between a touch display device and a stylus by uniformly arranging intervals between touch driving periods in a touch frame.

Touch display device with a uniform interval between touch driving periods and touch driving method thereof

A display apparatus comprises a display panel including a pixel area in which a plurality of pixels is disposed and a peripheral area outside the pixel area; a transmissive light source disposed in a first area of the pixel area; and a timing controller which controls the transmissive light source not to emit light when pixels disposed corresponding to the first area of the pixel area among the plurality of pixels are present in at least one of an image data input period and a pixel light emission period.

Display apparatus including transmissive light source

Provided are a touch display device and a touch circuit that can effectively simultaneously sense a plurality of pens in a predetermined touch frame time (a driving time) by simultaneously performing sensing of pen information and sensing of a pen position using pen data.

Touch display device and touch circuit for sensing an active pen touch and finger touch

A display device includes a flexible display panel, an ultrasonic fingerprint sensor which is disposed below a rear surface of an active area of the flexible display panel and has a first thickness and a first width, a cushion structure which is disposed below the rear surface of the flexible display panel, surrounds the periphery of the ultrasonic fingerprint sensor, and has a second thickness larger than the first thickness, and a circuit board which is electrically connected to the ultrasonic fingerprint sensor and has a second width larger than the first width.

Display device including ultrasonic fingerprint sensor

Disclosed is a display device. The display device comprising a substrate, a display area including a fingerprint recognition area on the substrate, a support substrate configured to support the substrate, a fingerprint sensor positioned under a rear side of the support substrate and configured to output ultrasonic to the fingerprint recognition area, and an EMI (electromagnetic interference) shield member positioned between the support substrate and the fingerprint sensor.

Fingerprint sensing display apparatus

A display display is disclosed. The display device comprises a substrate and a transistor on the substrate. An electroluminescence element is on the transistor and an encapsulation unit is on the electroluminescence element. A fingerprint sensor is under the second surface of the substrate. A portion of the substrate, a portion of the transistor, a portion of the electroluminescence element, and a portion of the encapsulation unit that overlap the fingerprint sensor are an ultrasonic transmission and reception channel on the fingerprint sensor.

Disclosed is a display device. The display device comprising a display area including a fingerprint recognition area and a plurality of pixels disposed on a substrate, an ultrasonic fingerprint sensor, corresponding to the fingerprint recognition area, disposed under the substrate, and a pressure sensor disposed under a rear side of the ultrasonic fingerprint sensor.

Disclosed is a display device. The display device comprising a substrate, a display area including a fingerprint recognition area and a plurality of pixels on the substrate, a support substrate under a rear side of the substrate, a fingerprint sensor, corresponding to the fingerprint recognition area, under the support substrate, and an EMI (electro-magnetic interference) shield member positioned between the support substrate and the fingerprint sensor.

Disclosed is a display device. The display device comprises an electroluminescence display panel including a fingerprint recognition area in a display area including a plurality of pixels on a substrate, an ultrasonic fingerprint sensor, under a rear side of the electroluminescence display panel, arranged corresponding to the fingerprint recognition area, and a support substrate, between the electroluminescence display panel and the ultrasonic fingerprint sensor, configured to support the electroluminescence display panel and the ultrasonic fingerprint sensor.

Disclosed is a display. The display device, comprising an electroluminescence display panel including a display area configured to output sound and configured to recognized a fingerprint, an ultrasonic fingerprint sensor disposed at a first area of the electroluminescence display panel and a film-type speaker disposed at a second area of the electroluminescence display panel.

Disclosed is a display device. The display device comprising an electroluminescence display panel including an area capable of sensing a fingerprint, a display area, and a non-display area adjacent to the display area, a support substrate configured to support the electroluminescence display panel, a fingerprint sensor under the support substrate, and a light-shield member, under the support substrate, configured to light shield the fingerprint sensor.

An electroluminescence display is provided. The electroluminescence display comprises data lines and gate lines intersecting each other and pixels arranged in a matrix, wherein each of subpixels of each pixel comprises: a first driver configured to drive a light-emitting element by using a first EM switching element, which switches the current path between a power supply line to which a pixel driving voltage is applied and the light-emitting element in response to a first light-emission control signal, and a first driving element connected between the first EM switching element and the light-emitting element; and a second driver configured to drive the light-emitting element by using a second EM switching element, which switches the current path between the power supply line and the light-emitting element in response to a second light-emission control signal, and a second driving element connected between the second EM switching element and the light-emitting element.

Electroluminescence display

A display device is provided in which each subpixel includes a driving TFT, an organic light-emitting diode, and at least one switching TFT for driving the subpixel. At least one of the driving TFT and the switching TFT is formed as a double-gate TFT having a first gate node and a second gate node, and each subpixel comprises a compensation circuit that senses a threshold voltage of the double-gate TFT and applies the same to the first gate node or the second gate node of the double-gate TFT.

Display device having double gate transistors

A display device is disclosed. The display device includes subpixels including data lines, scan lines, and one or more thin film transistors (TFTs). The display device includes a second switching TFT configured to output a reference signal input through a drain node to a source node according to a second scan signal input through a gate node, a first switching TFT configured to have a drain node connected to the source node of the second switching TFT, and form a current path such that the reference signal input through the drain node is transmitted to the data line according to a first scan signal input to a gate node, and an integrated circuit (IC) unit configured to sense a voltage of a current transmitted to the data line through the first switching TFT and sense a threshold voltage of the first switching TFT based on the sensed voltage.

Growing community of inventors

Paju-si, South Korea

NamYong Gong