Lg Display Co., Ltd.

Samsung Electronics Co., Ltd.

HongJu Lee

Hyunwoo Kim

SungChul Kim

HoonBae Kim

Sungchul Kim

HyeongWon Kang

Youngwoo Jo

Beom-Jin Kim

HyunWoo Jang

Sungpyo Yoon

SunYeop Kim

Seongkyu Kang

KiYong Kim

SeungMok Shin

JaeKyu Park

Bongchoon Kwak

Seungmok Shin

JuneGun Chung

SungHoon Lee

JinBong Chung

Sunghoon Lee

Hoonbae Kim

Sunyeop Kim

Embodiments of the disclosure relate to a display device and a data driving circuit. Specifically, there may be provided a display device comprising a display panel where a plurality of gate lines, a plurality of data lines, and a plurality of subpixels are disposed, a gate driving circuit configured to supply scan signals to the plurality of gate lines, a data driving circuit configured to convert digital image data into an analog data voltage and supply the analog data voltage to the plurality of data lines, a timing controller configured to control the gate driving circuit and the data driving circuit, a first gamma circuit generating a first gamma voltage corresponding to a first pixel during a period corresponding to a first color selection signal, and a second gamma circuit generating a second gamma voltage corresponding to a second pixel during a period corresponding to a second color selection signal different from the first color selection signal.

Display device and data driving circuit

A touch display device can include a plurality of touch electrodes disposed on or in a display panel; and a touch driving circuit configured to drive the plurality of touch electrodes by outputting a touch driving signal having a first level period and a second level period. Also, the touch driving circuit includes a current regulator configured to receive an input current from at least one of the plurality of touch electrodes during at least a partial period of the first level period and at least a partial period of the second level period of the touch driving signal, and scale down the input current to a first current and output the first current; and a converting integrator configured to output a sensing voltage based on the first current or a second current adjusted from the first current.

Converting integrator, touch driving circuit, and touch display device

Disclosed is an amplifier circuit comprising a first stage having first and second input terminals, a second stage configured to amplify a voltage supplied from the first stage and including a pull-up node and a pull-down node, a third stage including an output terminal, a tenth PMOS transistor, and a tenth NMOS transistors having gate electrodes respectively connected to the pull-up node and the pull-down node of the second stage, the third stage configured to perform a pull-up driving and pull-down driving of the amplified voltage, a first boosting circuit including an eleventh PMOS transistor having a gate electrode connected to the pull-up node and the first boosting circuit configured to increase a current in the first stage, and a second boosting circuit including an eleventh NMOS transistor having a gate electrode connected to the pull-down node and configured to increase the current in the first stage.

Amplifier circuit and display apparatus having the same

The present embodiments may provide a touch display device including: a display panel in which a plurality of data lines, a plurality of gate lines, and a plurality of touch electrodes are disposed; a gate-driving circuit configured to drive the plurality of gate lines; a data-driving circuit configured to drive the plurality of data lines; and a touch-driving circuit configured to drive the plurality of touch electrodes while the plurality of data lines and the plurality of gate lines are driven. In this touch display device, while a touch-driving signal swings with a predetermined amplitude, a data signal and a gate signal may also swing with the predetermined amplitude. According to the present embodiments, it is possible to enable high-speed image display and high-speed touch sensing, to perform a display operation and a touch operation simultaneously, and to display an image normally without any image change.

Touch display device, method for driving the same, driving circuit, data-driving circuit, and gate-driving circuit

A user device which can provide information related to text, which is input into a messenger, on a background screen of the messenger, and a method for providing information in the user device are provided. The method includes displaying a conversation exchanged through a messenger, detecting text related to a content in the conversation, displaying a content image matched to the content on a background of the conversation, and providing information related to the content in response to selection of the content image.

Method and apparatus for providing information by using messenger

Discussed is a touch display device, including a display panel on which a touch screen panel including a plurality of touch electrodes is embedded, and a touch control unit configured to generate a pen detection signal corresponding to a pen driving signal of a stylus from a touch sensing signal transmitted from the display panel, and generate a touch driving signal synchronized with the pen driving signal of the stylus by using the pen detection signal.

Touch circuit, touch display device, and touch driving method thereof, for generating touch driving signal in sync with pen driving signal

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 driving circuit, and a touch sensing method, and enable differential sensing using a single-ended amplifier without using a differential amplifier, thereby not only accurately sensing a touch during display driving, but also significantly reducing the number of circuit components and the circuit area for differential sensing.

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

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 disclosure provides an integrator, a touch display device, and a driving method therefor which can perform amplification and integration functions together. The integrator includes an amplifier having a non-inverting input terminal to which a reference signal having a pulse waveform is supplied; at least one feedback capacitor; a first path switching unit configured to connect the feedback capacitor between an inverting input terminal and an output terminal of the amplifier during a rising period of the reference signal; and a second path switching unit configured to connect the feedback capacitor between the inverting input terminal and the output terminal of the amplifier during a falling period of the reference signal, wherein, during each of the rising period and the falling period of the reference signal, a voltage difference between the reference signal and a signal applied to the inverting input terminal of the amplifier is amplified and accumulated, and the amplified and accumulated voltage difference is output.

Integrator, touch display device, and driving methods therefor

A touch display device accurately distinguishes a touch input performed using a finger and a touch input performed using a pen, such as a stylus, significantly reduce a touch sensing time, simultaneously perform a display operation and a touch sensing operation, and operate in a power saving manner. Touch sensing does not restrict an image display time of a display panel. Touch inputs are sensed without degradation in touch performance, which would otherwise be caused by parasitic capacitance occurring in electrodes within the display panel, such as data lines or gate lines.

Touch display device

A touchscreen driver circuit and a touch sensor display device are discussed. The touch sensor display device and the touch sensing method can improve touch sensitivity and improve touch sensitivity and the uniformity of a touch sensing signal while reducing the size of a circuit area.

Touch screen driver circuit and touch sensor display device

A touch display device, a common driving circuit, and a driving method are discussed. The touch display device can include a common driving circuit configured to drive a plurality of common electrodes used for display driving and touch driving, wherein the common driving circuit can include a common signal stabilization amplifier configured to control the average of a first input signal and a second input signal, which are respectively received from a first common electrode and a second common electrode, to correspond to a reference common signal and to output a first control input signal and a second control input signal; and a differential amplifier configured to output a differential sensing signal that is proportional to the difference between the first control input signal and the second control input signal. Accordingly, the impact of display driving and touch driving on each other when simultaneously performing the display driving and the touch driving can be reduced.

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Seoul, South Korea

HongJu Lee