Lg Display Co., Ltd.

YoungGyu Kim

Hyunsuk Cho

SangHyuck Bae

CheolSe Kim

BuYeol Lee

Jongsung Kim

Deuksu Lee

HyungUk Jang

SeungRok Shin

Jaeseung Kim

NamYong Gong

Yoonnara Jang

Hyunwoo Jang

Byounggwan Lee

Kyounghwan Kim

DoYoung Jung

JongGu Heo

Juhong Kim

MyungHo Shin

SuWon Lee

Sujin Kwon

Myungho Shin

Embodiments described herein is able to provide a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method capable of efficiently providing a display function, a touch-sensing function, and a pen-touch-sensing function.

Touch display device, active pen, touch system, touch circuit, and pen recognition method

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

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

The present disclosure provides A touch sensing system comprising: a display panel having pixels and touch sensors; a display driving circuit that writes data to the pixels; a touch sensing part that senses touch input; a plurality of multiplexers that connect one of sensor lines connected to the touch sensing part; and a touch sensor controller that performs full sensing to detect a multiplexer with a sensed touch input by supplying a driving signal to the touch sensors within the touch sensing periods, performs pre-sensing to determine whether or not a touch input is sensed in multiplexers adjacent to the multiplexer with a sensed touch input, and performs local sensing to scan the touch sensors connected to the multiplexer with a sensed touch input based on the pre-sensing result and to calculate the coordinates of the touch input.

Touch sensing system and method of controlling the same

A display device includes a deviation compensating circuit to receive a feedback touch driving signal from a sensor line connected to one of a plurality of touch sensor, receive a first feedback AC (alternating current) signal from a data line connected to one of a plurality of pixels, receive a second feedback AC signal from a gate line connected to the pixels, detect a phase deviation and an amplitude deviation between the feedback touch driving signal and the first and the second feedback AC signals, and generate a compensation touch driving signal, a first compensation AC signal, and a second compensation AC signal for compensating for the phase deviation and the amplitude deviation.

Display device and method for driving the same

Provided are a touch sensor embedded display device and a method for driving the same. A method includes: sequentially, in the display period: performing a display scan of a first area of the display panel based on one display line; and applying data of an input image to the pixels of the first area; simultaneously performing: a touch scan of a first touch line of the display panel and a touch scan of a second touch line of the display panel in a touch period following the display period; and simultaneously sensing touch inputs of the touch sensors on the first and second touch lines in the touch period, wherein each of the first and second touch lines overlaps a plurality of display lines, and wherein a width of each of the first and second touch lines is greater than a width of each of the plurality of display lines.

Touch sensor embedded display device and method for driving the same

The present disclosure is related to a touch sensing system and a display apparatus decreasing a sensing time and enabling an effective touch sensing, although a number of sensing electrodes increases according to an increase of an area of a touch panel.

Touch sensing system and display apparatus

A touch sensing device includes a touch screen including Tx lines, Rx lines crossing the Tx lines, and touch sensors formed between the Tx lines and the Rx lines, and a touch screen driving circuit which senses all the touch sensors of the touch screen in a first sensing step to detect the presence or absence of a touch input, and then again senses the touch sensors, in which the touch input is detected as a first sensing result, in a second sensing step to detect a position of the touch input. When there is no touch sensor, in which the touch input is detected as the first sensing result, the touch screen driving circuit repeats the first sensing step.

Touch sensing device

A touch screen apparatus and a driving method thereof are provided. The touch screen drive circuit performs a setup operation for selecting Tx lines to be supplied with the drive signal and Rx lines to receive the voltages of the touch sensors, a sensing operation for supplying a drive signal to the Tx lines and receiving and sampling touch sensor voltages through the Rx lines, an ADC operation for converting the sampled voltages into digital data, a coordinate detection operation for analyzing the digital data by a preset touch detection algorithm and estimating the coordinates of a touch input position, and a data transmission operation for transmitting touch coordinate data comprising the coordinates to an external system. At least two operations among the setup operation, the sensing operation, and the ADC operation are performed in parallel.

Growing community of inventors

Paju-si, South Korea

YoungGyu Kim