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公开(公告)号：US09733778B2
公开(公告)日：2017-08-15
申请号：US14983328
申请日：2015-12-29
Applicant: LG Display Co., Ltd.
Inventor： Sangyong Lee , Kyungjin Jang , Jaekyu Park , Youngwoo Jo
CPC classification number: G06F3/044 , G06F3/0412 , G06F3/0416 , G09G3/20
Abstract: A touch sensing circuit is configured to supply touch drive signals to electrodes of a touch sensitive display device and detect corresponding touch sense signals from the electrodes in response to the supplied touch drive signals, a touch sense signal indicating a change in self-capacitance of a driven electrode in response to a touch input on the driven electrode. The touch sensing circuit is further configured to integrate, for a first predetermined duration of time, a measure of each of the touch sense signals, to generate a first integrated signal corresponding to each touch sense signal; integrate, for a second predetermined duration of time, the first integrated signal, to generate a second integrated signal corresponding to each touch sense signal; and determine presence of one or more touch inputs on one or more of the electrodes based on the second integrated signal.
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公开(公告)号：US20170003780A1
公开(公告)日：2017-01-05
申请号：US14983328
申请日：2015-12-29
Applicant: LG Display Co., Ltd.
Inventor： Sangyong Lee , Kyungjin Jang , Jaekyu Park , Youngwoo Jo
CPC classification number: G06F3/044 , G06F3/0412 , G06F3/0416 , G09G3/20
Abstract: A touch sensing circuit is configured to supply touch drive signals to electrodes of a touch sensitive display device and detect corresponding touch sense signals from the electrodes in response to the supplied touch drive signals, a touch sense signal indicating a change in self-capacitance of a driven electrode in response to a touch input on the driven electrode. The touch sensing circuit is further configured to integrate, for a first predetermined duration of time, a measure of each of the touch sense signals, to generate a first integrated signal corresponding to each touch sense signal; integrate, for a second predetermined duration of time, the first integrated signal, to generate a second integrated signal corresponding to each touch sense signal; and determine presence of one or more touch inputs on one or more of the electrodes based on the second integrated signal.
Abstract translation: 触摸感测电路被配置为向触摸敏感显示装置的电极提供触摸驱动信号，并响应于所提供的触摸驱动信号检测来自电极的相应的触摸感测信号，触摸感测信号指示电容的自身电容的变化 驱动电极响应于驱动电极上的触摸输入。 触摸感测电路还被配置为在第一预定持续时间内集成每个触摸感测信号的测量值，以产生对应于每个触摸感测信号的第一集成信号; 在第二预定持续时间内积分第一积分信号，以产生对应于每个触摸感测信号的第二积分信号; 并且基于第二积分信号确定一个或多个电极上的一个或多个触摸输入的存在。
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公开(公告)号：US12216853B2
公开(公告)日：2025-02-04
申请号：US18389501
申请日：2023-11-14
Applicant: LG Display Co., Ltd.
Inventor： Hongju Lee , Hyunwoo Kim , Jaekyu Park
Abstract: 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.
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