Lg Display Co., Ltd.

JuneGun Chung

Youngwoo Jo

HongJu Lee

HyunWoo Jang

A communication interface that can decrease a transmission time between a touch driving circuit and a touch controller at the time of performing a pen touch sensing operation is provided. The touch display device can include a touch panel in which touch electrodes are arranged; a touch controller that outputs a first master signal to a first master pin corresponding to one end of a first interface, outputs a second master signal to a second master pin corresponding to one end of a second interface, receives first slave data from the first master pin, and receives second slave data from the second master pin; and a touch driving circuit that receives the first and second master signals, and outputs the first slave data to a first slave pin and outputs the second slave data to a second slave pin in response to the first master signal and the second master signal.

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

A touch sensor display device and an interface method thereof are provided. The touch sensor display device comprises a display panel in which a touch panel, gate lines, data lines, sensing lines, and subpixels are disposed; a gate driver circuit drives the gate lines; a data driver circuit drives the data lines; a touchscreen driver circuit drives the sensing lines, and includes a sleep module which controls switching to a sleep mode, and a wake-up module which performs a wake-up function to cancel and return to a normal state, and transmitting a sleep mode signal pattern or a wake-up signal pattern to the micro control unit; and a micro control unit determining whether a touch is detected, by the touchscreen driver circuit. Accordingly, power consumption is reduced in the display device. A mode change is performed by a driver circuit to enable rapid mode changes while reducing power consumption.

Touch sensor display device and interface method thereof

Provided are a touch display device and a touch driving method thereof. Touch electrodes are grouped into a touch sensing block and non-touch blocks. The touch electrodes in the touch sensing block and the touch electrodes in the non-touch blocks are sensed at different sensing ratios. Power consumption is efficiently managed and sensitivity in touch sensing is maintained.

Touch display device and touch driving method thereof

The present disclosure provides a touch driving circuit, a touch display device, and a pen data recognition method by a touch circuit, and the touch circuit supplies a touch driving signal to two or more touch electrodes from among the plurality of touch electrodes in a pen data mode, generates sensing data for recognizing pen data which is transmitted from an active pen via the two or more touch electrodes in response to the touch driving signal, and performs range conversion and merger of two or more pieces of sensing data generated by detecting the pen data of same bit value, so as to generate summation sensing data.

Touch driving circuit, touch display device, and pen data recognition method by touch circuit

Disclosed are a touch display device, a touch system, a touch master, and a communication method and, more particularly, are a touch display device, a touch system, a touch master, and a communication method which can provide a communication protocol and a communication interface based on a master-slave system in which a touch driving device operates as a touch slave and a touch controller operates as a touch master. Communication between the touch driving device and the touch controller can be accurately and rapidly performed and data transmission efficiency can increase.

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Gyeonggi-do, South Korea

JuneGun Chung