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公开(公告)号：US11768563B2
公开(公告)日：2023-09-26
申请号：US17972461
申请日：2022-10-24
Applicant: LG Display Co., Ltd.
Inventor： SunYeop Kim , SungChul Kim , HoonBae Kim , Junghan Lee , Seongkyu Kang
CPC classification number: G06F3/04184 , G06F3/0412 , G06F3/0443 , G06F3/041662 , G06F2203/04106
Abstract: A touch display device includes a display controller configured to output a control signal and a first touch synchronization signal defining a display period and a touch period, a gate driving circuit configured to receive a high-level gate voltage and the control signal, and output a gate voltage pulse, a display panel comprising gate lines to which the gate voltage pulse is input and sub-pixels, a touch controller configured to receive the first touch synchronization signal, and output a pulse width modulation signal, and a touch power circuit configured to output a voltage generated based on the pulse width modulation signal to the gate driving circuit in at least a first period of the touch period, and output the high-level gate voltage to the gate driving circuit based on a second touch synchronization signal that defines a pseudo display period in a second period of the touch period.
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公开(公告)号：US11257452B2
公开(公告)日：2022-02-22
申请号：US16440187
申请日：2019-06-13
Applicant: LG Display Co., Ltd.
Inventor： SungChul Kim , CheolSe Kim , HoonBae Kim , SunYeop Kim , Seongkyu Kang
IPC: G09G3/36 , G02F1/1333 , G06F3/041
Abstract: The present disclosure relates to a touch display device, a touch sensing circuit, and a driving method. Further, the present disclosure relates to a touch display device, a touch sensing circuit, and a driving method, in which multiple touch electrodes are grouped into multiple touch electrode groups, and sensing is concurrently performed for each of the multiple touch electrode groups, so that excellent touch sensitivity and a fast touch sensing speed are allowed.
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公开(公告)号：US11194201B2
公开(公告)日：2021-12-07
申请号：US15931401
申请日：2020-05-13
Applicant: LG Display Co., Ltd.
Inventor： SeongKyu Kang , SungChul Kim , HoonBae Kim , SunYeop Kim
IPC: G06F3/038 , G09G5/00 , G02F1/1362 , G09G3/36
Abstract: A display device includes a plurality of gate lines; a plurality of data lines; a plurality of pixel electrodes electrically connected with the plurality of data lines; a plurality of common electrodes corresponding to two or more pixel electrodes among the plurality of pixel electrodes; a data driving circuit outputting data voltages to the plurality of data lines; and a driving circuit outputting a first driving signal with a first voltage level to at least one common electrode among the plurality of common electrodes during a first driving period and a second driving signal with a second voltage level and a third voltage level to the at least one common electrode during a second driving period, the second driving signal being a pulse signal, wherein the second voltage level and the third voltage level differ from the first voltage level.
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公开(公告)号：US11054939B2
公开(公告)日：2021-07-06
申请号：US16539686
申请日：2019-08-13
Applicant: LG Display Co., Ltd.
Inventor： JungHan Lee , HongChul Kim , SungChul Kim , JeongSeop Lee , SeungEun Pyo
Abstract: Discussed are a display device with an integrated touch screen and a method of operating the same. The display device according to an embodiment includes a display panel including a plurality of pixel electrodes; a touch screen including m number of electrodes which are formed to overlap with the plurality of pixel electrodes, wherein m is a multiple of n, and n is an integer equal to or greater than two, and wherein the m electrodes are divided into n number of electrode groups; a touch driver configured to generate a touch scan signal and to supply the generated touch scan signal to a display driver; and the display driver configured to apply a common voltage or the touch scan signal to one or more of the m electrodes depending on a driving mode of the display device.
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公开(公告)号：US10120490B2
公开(公告)日：2018-11-06
申请号：US15216656
申请日：2016-07-21
Applicant: LG Display Co., Ltd.
Inventor： SungChul Kim , JuHan Kim
Abstract: A driving circuit, a touch display device, and a method of driving the touch display device, in which, when a user touches a screen, not only can a touch point be sensed, but also a level of touch force with which the user presses the screen can also be efficiently sensed, in order to provide a range of functions. It is possible to provide a variety of functions that are not supported by related-art touch sensing technologies.
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Patent Agency Ranking
公开(公告)号：US10082907B2
公开(公告)日：2018-09-25
申请号：US15829671
申请日：2017-12-01
Applicant: LG Display Co., Ltd.
Inventor： Seungkyeom Kim , SungChul Kim , Sungsu Han , JiYeon Park
CPC classification number: G06F3/0416 , G06F3/0412 , G06F3/044
Abstract: A driving circuit, a touch display device, and a method of driving the touch display device. A plurality of first electrodes are disposed within a display panel. A second electrode is disposed outside of the display panel. A driving circuit detects at least one of a touch position and a touching force of a touch by sequentially applying a first electrode driving signal to at least one first electrode among the plurality of first electrodes and applying a second electrode driving signal to the second electrode in a touch driving period. When a user touches a screen, not only can a touch position be sensed, but also a touching force with which the user presses the screen can also be efficiently sensed. This provides a range of functions that existing touch position-detecting technologies have failed to provide.
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公开(公告)号：US10048797B2
公开(公告)日：2018-08-14
申请号：US15405239
申请日：2017-01-12
Applicant: LG Display Co., Ltd.
Inventor： SungChul Kim
Abstract: Disclosed is a display device including: a display panel including data lines and gate lines; a touch screen including a plurality of touch screens; a data driving circuit for supplying a data voltage to the data lines; a gate driving circuit for supplying a gate voltage to the gate lines; a touch sensing circuit for applying a driving signal to the touch sensors to sense a change in a voltage or a capacitance value of the touch sensors; and a timing controller for time-dividing a first frame period into a first driving period for sensing the touch sensors and a second driving period for performing display on the display panel, wherein the timing controller performs a control to supply a data voltage to a first area of the first driving period adjacent to a boundary surface between the first driving period and the second driving period.
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公开(公告)号：US09864459B2
公开(公告)日：2018-01-09
申请号：US15222876
申请日：2016-07-28
Applicant: LG Display Co., Ltd.
Inventor： Seungkyeom Kim , SungChul Kim , Sungsu Han , JiYeon Park
CPC classification number: G06F3/0416 , G06F3/0412 , G06F3/044
Abstract: A driving circuit, a touch display device, and a method of driving the touch display device. A plurality of first electrodes are disposed within a display panel. A second electrode is disposed outside of the display panel. A driving circuit detects at least one of a touch position and a touching force of a touch by sequentially applying a first electrode driving signal to at least one first electrode among the plurality of first electrodes and applying a second electrode driving signal to the second electrode in a touch driving period. When a user touches a screen, not only can a touch position be sensed, but also a touching force with which the user presses the screen can also be efficiently sensed. This provides a range of functions that existing touch position-detecting technologies have failed to provide.
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29.发明授权公开(公告)号：US09619083B1
公开(公告)日：2017-04-11
申请号：US14957574
申请日：2015-12-02
Applicant: LG Display Co., Ltd.
Inventor： Seongkyu Kang , SungChul Kim
CPC classification number: G06F3/0416 , G06F3/0412 , G06F3/0418 , G06F3/044 , G09G5/006 , G09G2300/0413 , G09G2310/0245 , G09G2310/0275 , G09G2310/0297 , G09G2310/08
Abstract: A touch circuit, a display driver circuit, a touch display device, and a method of driving the same. After display driving is ended and before touch driving begins to be performed, touch driving and touch sensing are accurately performed through pre-setting driving without the influence of display driving that was ended already. An accurate touch sensing result without touch sensing noise is obtained.
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公开(公告)号：US09442593B2
公开(公告)日：2016-09-13
申请号：US14522561
申请日：2014-10-23
Applicant: LG DISPLAY CO., LTD.
Inventor： SungChul Kim , JuHan Kim , YongChan Park , Sujin Kwon
CPC classification number: G06F3/0412 , G06F3/0418 , G06F3/044 , G09G3/2092 , G09G2300/0426
Abstract: The present invention relates to touch screen panel integrated display panel and display device. The touch screen panel integrated display panel comprises: a common electrode to which a common voltage is applied in a display mode and a touch driving signal is applied in a touch mode; a gate line that transfers a scan signal to a pixel row; and a gate driving integrated circuit that is connected to the gate line and outputs the scan signal to the gate line, wherein the gate driving integrated circuit includes a pull-up transistor and a pull-down transistor for outputting the scan signal to the gate line in the display mode, and additionally includes a touch mode transistor for outputting the touch driving signal applied to the common electrode or a signal corresponding to the touch driving signal to the gate line in the touch mode.
Abstract translation: 本发明涉及触摸屏面板集成显示面板和显示装置。 触摸屏面板集成显示面板包括：以显示模式施加公共电压的公共电极，并且以触摸模式施加触摸驱动信号; 将扫描信号传送到像素行的栅极线; 以及栅极驱动集成电路，其连接到栅极线并将扫描信号输出到栅极线，其中栅极驱动集成电路包括上拉晶体管和用于将扫描信号输出到栅极线的下拉晶体管 并且还包括用于在触摸模式中将施加到公共电极的触摸驱动信号或对应于触摸驱动信号的信号输出到栅极线的触摸模式晶体管。
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