公开(公告)号：US20230128086A1

公开(公告)日：2023-04-27

申请号：US18088394

申请日：2022-12-23

Applicant: LG DISPLAY CO., LTD.

Inventor： Jaehun JUN ,  Hyunkyu PARK

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/3275

Abstract: A display device can include a display panel having data lines, gate lines and subpixels; a data driver to supply a video data signal including a first signal segment and a second signal segment maintaining a predetermined voltage difference to each of the data lines, and output readout data in response to signal sensing through each of the data lines; and a touch controller. Also, the video data signal serves as both a display driving signal and a touch driving signal, and in the video data signal, the second signal segment has a variable voltage representing a gray level for image display, the predetermined voltage difference is substantially constantly maintained so the video data signal serves as a touch driving signal, and the first signal segment has a variable voltage configured to maintain the predetermined voltage difference in accordance with the variable voltage of the second signal segment.

公开(公告)号：US20190173454A1

公开(公告)日：2019-06-06

申请号：US16208761

申请日：2018-12-04

Applicant: LG DISPLAY CO., LTD.

Inventor： Jaehun JUN ,  Hyunkyu PARK

IPC: H03K3/013 ,  H03L7/08 ,  H03L7/107 ,  G06F3/044 ,  G09G3/3225 ,  G09G3/36

Abstract: A spread spectrum clock generation apparatus includes a frequency modulator configured to generate an output clock signal, a frequency of which is variable with reference to a predetermined center frequency, by frequency-modulating an input clock signal according to a modulation profile signal; and a profile generator configured to generate a nested-modulation profile for controlling the frequency of the output clock signal, generate the modulation profile signal according to the nested-modulation profile, and output the modulation profile signal to the frequency modulator, wherein the profile generator is further configured to generate the nested-modulation profile by varying a cycle and a change range of a triangle modulation profile having a triangle waveform pattern having a pre-designated cycle and a pre-designated amplitude with reference to the center frequency in a time-frequency domain.

公开(公告)号：US20190121468A1

公开(公告)日：2019-04-25

申请号：US16163571

申请日：2018-10-18

Applicant: LG Display Co., Ltd.

Inventor： Jaehun JUN ,  HyeongWon KANG ,  Youngwoo JO

IPC: G06F3/044 ,  G06F3/045 ,  G02F1/1333

Abstract: A touch display device includes a display panel having a plurality of data lines, gate lines, and common electrodes, a data driving circuit supplying a data signal to the data lines, a common electrode driving circuit supplying a common signal to the common electrodes and outputting sensing data by detecting sensing signals from one or more of the common electrodes, and a touch controller sensing touch based on the sensing data, in which the common electrodes are arranged in two or more common electrode columns, the two or more common electrode columns each include two or more common electrodes, and while the data signal is supplied to the data lines, the two or more common electrode columns are supplied with a common signal respectively through local buffers. It is possible to perform touch sensing even while display driving by removing noise due to display driving.

公开(公告)号：US20160098141A1

公开(公告)日：2016-04-07

申请号：US14875502

申请日：2015-10-05

Applicant: LG Display Co., Ltd.

Inventor： Hyeongwon KANG ,  Jaehun JUN ,  Dukhyo LEE ,  Beomjin KIM

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F1/3262 ,  G06F1/3265 ,  G06F3/0412 ,  G06F3/044 ,  G06F2203/04112 ,  Y02D10/153

Abstract: A display device that comprises a plurality of touch electrodes and a touchscreen driving circuit coupled to the plurality of touch electrodes. In a normal display mode of the display device, the touchscreen driving circuit senses touch via the plurality of touch electrodes using self capacitance touch sensing. In a sleep mode of the display device, the touchscreen driving circuit senses touch via the plurality of touch electrodes using mutual capacitance touch sensing.

Abstract translation: 一种显示装置，包括耦合到所述多个触摸电极的多个触摸电极和触摸屏驱动电路。 在显示装置的正常显示模式中，触摸屏驱动电路使用自身电容触摸感测通过多个触摸电极来感测触摸。 在显示装置的睡眠模式中，触摸屏驱动电路使用互电容触摸感测来感测经由多个触摸电极的触摸。