Lg Display Co., Ltd.

Other

KiYong Kim

Youngwoo Jo

JaeKyu Park

Injae Chung

Chulsang Jang

Insu Joo

Jaewon Lee

HoonBae Kim

HyeongWon Kang

SunYeop Kim

Seongkyu Kang

HongJu Lee

Woojin Nam

HyunWoo Jang

JaeYoung Oh

Hyunkyu Park

Jaekyun Lee

Kyungjin Jang

MyungHo Shin

SungKi Kim

SungUk Byun

Dongkyu Lee

WooJin Nam

YongWoo Choi

MinWoo Hwang

Youngho Kwon

YongSu An

SunChul Kim

Minwoo Hwang

Jaekyu Park

A touch display device and a display panel are disclosed. The touch display device comprises a display panel including touch electrodes arranged into touch blocks, each of the touch blocks including a respective portion of the touch electrodes; touch lines including touch block lines connected to the touch blocks and touch electrode lines connected to the touch electrodes; and a touch driving circuit configured to sense a touch of a touch block from the touch blocks based on a first touch signal received from a touch block line from the touch block lines that is connected to the touch block, and sense a touch of a touch electrode from the touch electrodes included in the touch block based on a second touch signal received from a touch electrode line from the touch electrode lines that is connected to the touch electrode.

Touch display device

Embodiments of the present disclosure relate to a touch display device, a touch circuit and a touch driving method thereof, and more particularly, a touch display device, a touch circuit and a touch driving method thereof enable to reduce effectively a ghost phenomenon in touch electrode groups by dividing a plurality of touch electrodes into a plurality of touch electrode groups with same patterns. The touch display device may include a display panel including a touch electrode group in which a plurality of long touch electrodes with long length and a plurality of short touch electrodes with short length in a first direction are alternately arranged in a second direction; and a touch circuit sequentially performing a self-capacitance sensing operation and a mutual-capacitance sensing operation for the touch electrode group.

Touch display device, touch circuit and touch driving method thereof

A touch display device includes: a touch panel including N touch electrodes; a sensor sensing unit block including M sensor sensing units and to sense two or more touch electrodes among the N touch electrodes; a front multiplexer to select two or more touch electrodes from among the N touch electrodes and connect the selected touch electrodes to the sensor sensing unit block. The front multiplexer is configured to select M touch electrodes, which are disposed in a sensing active region corresponding to a first sensing period, from among the N touch electrodes, and to match and connect the M touch electrodes to the M sensor sensing units, wherein M is greater than or equal to 2, and N is greater than M. The M sensor sensing units are configured to simultaneously sense the M touch electrodes disposed in the sensing active region during the first sensing period.

Touch display device and touch driving circuit

Embodiments of the present disclosure relate to a touch display device, a touch circuit, and a pen sensing method, allows various pen protocols to be adaptively set, thereby sensing various types of pens or sensing a pen by using various pen protocols.

Touch display device, touch circuit, and pen sensing method for sensing various types of pens

A display device having a built-in touchscreen and a driving chip, a circuit film, and a chip-on-film (COF) type driving circuit included in the display device. The COF type driving circuit performs data driving and touch driving in a combined manner. A source driving circuit outputs image data voltages through data channels. At least one touch driving circuit outputs touch driving signals through touch channels. The source driving circuit and the at least one touch driving circuit are mounted on an integrated circuit film. Data channel lines electrically connected to the data channels and touch channel lines electrically connected to the touch channels are disposed on the integrated circuit film. The noise avoidance line disposed on the integrated circuit film is located outward of an at least one outermost touch channel line.

Driving chip, circuit film, chip-on-film type driving circuit, and display device having built-in touchscreen

A touch sensing method, a touch sensing circuit, and a touch display device perform multifrequency touch driving by varying the frequencies of touch driving signals when sensing a touch or a touched position by outputting pulse-type touch driving by which one or more touch electrodes among a number of touch electrodes disposed on a display panel are driven sequentially. Undesired parasitic capacitance that would otherwise be caused by touch driving signals is prevented from occurring, and EMI influence is reduced.

Touch sensing method, touch sensing circuit, and touch display device

An organic light emitting diode display device and a driving method thereof are disclosed. The organic light emitting diode display device according to an embodiment of the invention comprises a display panel including a plurality of data lines, a plurality of gate line pairs crossing the data lines, and a plurality of light emitting cells which include an organic light emitting diode device, first and second cell driving circuits for alternately driving the organic light emitting diode device; a data voltage generator supplying a data voltage of a first polarity to the data lines; a compensation voltage generator supplying a compensation voltage of a second polarity to the data lines; and a scan driver for sequentially supplying scan pulses to the gate line pairs, wherein the first and second cell driving circuits are alternately supplied with the data voltage and the compensation voltage in response to the scan pulses to alternately driven the organic light.

Organic light emitting diode display device and driving method thereof

In a method for fabricating a lightweight and thin liquid crystal display (LCD), a first mother substrate, a subsidiary substrate and a thin second mother substrate are provided. An edge cut is formed by cutting edges of the first and second mother substrates and the subsidiary substrate to be inclined at a predetermined angle. An array process is performed on the first mother substrate. The subsidiary substrate is attached to the second mother substrate. A color filter process is performed on the second mother substrate having the subsidiary substrate attached thereto. The first and second mother substrates are attached together. The subsidiary substrate is separated from the first and second substrates by spraying air between the second mother substrate and the subsidiary substrate, in which the edge cut is formed.

Method of fabricating lightweight and thin liquid crystal display

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Gyeonggi-do, South Korea

KiYong Kim