CN107369423A - 液晶显示器、显示面板及其充电控制方法 - Google Patents
液晶显示器、显示面板及其充电控制方法 Download PDFInfo
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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Abstract
本发明公开了一种显示面板的充电控制方法,包括以下步骤:当显示面板的触摸和显示同步进行时,通过控制数据线提供的源极充电电压波形,以使源极充电电压波形跟随显示面板的公共电极的电压波形进行变化。从而使得显示面板上的每个像素点的充电保持一致,进而有效地改善充电问题,提升画面品质。本发明还公开了一种显示面板和一种液晶显示器。
Description
技术领域
本发明涉及显示控制技术领域,特别涉及一种显示面板的充电控制方法、一种显示面板和一种液晶显示器。
背景技术
触摸屏按照组成结构可分为:外挂式触摸屏、覆盖表面式触摸屏和内嵌式触摸屏,其中,内嵌式触摸屏是将触摸屏的触控电极设置在液晶显示屏内部,不仅可以减小整体模组的厚度,又可以降低触摸屏的制作成本;触摸屏按照工作原理可分为:电阻式触摸屏和电容式触摸屏,其中,电容式触摸屏支持多点触控功能,拥有较高的透光率和较低的整体功耗,且接触面硬度高、使用寿命较长。因此,目前多采用电容式内嵌触摸屏。
在电容式内嵌触摸屏中,可借助于栅极线、数据线及公共电极来实现显示屏的显示和触控功能,但是当显示和触控同步进行时,由于公共电极的电压不断变化,很容易导致像素充电不足,影响显示效果。
发明内容
本发明旨在至少从一定程度上解决上述技术中的技术问题之一。为此,本发明的第一个目的在于提出一种显示面板的充电控制方法,能够使得显示面板上的每个像素点的充电保持一致,从而有效地改善充电问题,提升画面品质。
本发明的第二个目的在于提出一种显示面板。本发明的第三个目的在于提出一种液晶显示器。
为达到上述目的,本发明第一方面实施例提出了一种显示面板的充电控制方法,包括以下步骤:当所述显示面板的触摸和显示同步进行时,通过控制数据线提供的源极充电电压波形,以使所述源极充电电压波形跟随所述显示面板的公共电极的电压波形进行变化。
根据本发明实施例的显示面板的充电控制方法,当显示面板的触摸和显示同步进行时,通过控制数据线提供的源极充电电压波形,以使源极充电电压波形跟随显示面板的公共电极的电压波形进行变化,从而使得显示面板上的每个像素点的充电保持一致,进而有效地改善充电问题,提升画面品质。
根据本发明的一个实施例,通过调整所述源极充电电压波形以使所述源极充电电压波形与所述公共电极的电压波形保持一致。
根据本发明的一个实施例,在每个像素点的充电过程中,所述公共电极的电压与源极充电电压之间的压差保持不变。
根据本发明的一个实施例,每个所述像素点对应设置一个晶体管,所述晶体管为多列,每列所述晶体管的源极连接到一条数据线,每列所述晶体管的漏极连接到所述公共电极。
为达到上述目的,本发明第二方面实施例还提出了一种显示面板,包括:第一电压提供单元,用于向所述显示面板的公共电极提供电压波形;第二电压提供单元,用于向所述显示面板的数据线提供源极充电电压波形;调整单元,用于在所述显示面板的触摸和显示同步进行时,通过控制所述源极充电电压波形,以使所述源极充电电压波形跟随所述公共电极的电压波形进行变化。
根据本发明实施例的显示面板,在显示面板的触摸和显示同步进行时,通过调整单元控制源极充电电压波形,以使源极充电电压波形跟随公共电极的电压波形进行变化,从而使得显示面板上的每个像素点的充电保持一致,进而有效地改善充电问题,提升画面品质。
根据本发明的一个实施例,所述调整单元还用于通过控制所述第二电压提供单元调整所述源极充电电压波形,以使所述源极充电电压波形与所述公共电极的电压波形保持一致。
根据本发明的一个实施例,在每个像素点的充电过程中,所述公共电极的电压与源极充电电压之间的压差保持不变。
根据本发明的一个实施例,每个所述像素点对应设置一个晶体管,所述晶体管为多列,每列所述晶体管的源极连接到一条数据线,每列所述晶体管的漏极连接到所述公共电极。
此外,本发明的实施例还提出了一种液晶显示器,其包括上述的显示面板。
本发明实施例的液晶显示器,采用上述的显示面板,能够保证显示面板上的每个像素点的充电保持一致,从而有效地改善充电问题,提升画面品质。
附图说明
图1为相关技术中电容式内嵌显示面板的结构示意图;
图2为相关技术中电容式内嵌显示面板的数据电压和公共电极电压的波形图;
图3为根据本发明实施例的显示面板的充电控制方法的流程图;
图4a为根据本发明一个实施例的显示面板的源极充电电压和公共电极电压的波形图;
图4b为根据本发明另一个实施例的显示面板的源极充电电压和公共电极电压的波形图;
图5为根据本发明一个实施例的像素点的电路结构图;
图6为根据本发明一个实施例的显示面板的结构示意图。
具体实施方式
下面详细描述本发明的实施例,所述实施例的示例在附图中示出,其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的,旨在用于解释本发明,而不能理解为对本发明的限制。
下面参照附图来描述根据本发明实施例提出的显示面板的充电控制方法、显示面板和液晶显示器。
在描述本发明实施例的显示面板的充电控制方法之前,先结合一个具体示例来详细说明下本发明所要解决的技术问题。
图1为相关技术中电容式内嵌显示面板的结构示意图。如图1所示,该电容式内嵌显示面板可包括阵列基板和液晶层,阵列基板包括栅极线、数据线、公共电极、像素电极以及在公共电极与像素电极之间的TFT器件,其中公共电极、像素电极和TFT器件构成了一个像素点。
通常,为了实现显示面板的显示和触控功能,可将公共电极作为复用电极,一方面作为公共电极为显示面板的画面显示提供基准参考电压,另一方面作为触控电极为显示面板的触控功能提供触控驱动电压。具体而言,当显示面板工作时,外部IC输出数据信号至数据线以对像素点进行点亮控制,同时给公共电极供电,在公共电极电压的作用下,实现显示面板的显示功能和触控功能。
但是通常情况下,当显示和触控同步进行时,在像素点充电的过程中,如图2所示,由于公共电极受到人体触控,其电压Vcom会不停地发生变化,而如果此时数据电压Source保持不变,就会导致像素点充电时,Source与Vcom之间的电压差值不断地发生变化,从而导致像素点充电不足,无法保证充电的一致性,进而影响显示效果。因此,基于该技术问题,本发明提出了一种显示面板的充电控制方法。
图3为根据本发明实施例的显示面板的充电控制方法的流程图。如图3所示,本发明实施例的显示面板的充电控制方法可包括以下步骤:
S1,当显示面板的触摸和显示同步进行时,通过控制数据线提供的源极充电电压波形,以使源极充电电压波形跟随显示面板的公共电极的电压波形进行变化。
根据本发明的一个实施例,通过调整源极充电电压波形以使源极充电电压波形与公共电极的电压波形保持一致。其中,当公共电极的电压波形为高电平时,源极充电电压波形对应为高电平;当公共电极的电压波形为低电平时,源极充电电压波形对应为低电平。
进一步地,在每个像素点的充电过程中,公共电极的电压与源极充电电压之间的压差保持不变。
具体地,仍以图1所示的显示面板为例。在显示面板工作时,外部IC给公共电极提供的电压波形保持不变,但是外部IC输出的数据电压Source(即源极充电电压)不再是维持原有的恒定状态,而是随着公共电极的电压Vcom的变化而变化。具体地,在显示和触控同步进行时,外部IC给公共电极供电,同时实时检测公共电极的电压Vcom,其中,在没有人体触控的情况下,公共电极的电压Vcom与外部IC提供的电压相同,但在有人体触控的情况下,公共电极的电压Vcom将发生变化,如果此时数据电压Source保持不变,将影响充电的一致性,所以外部IC在输出数据电压Source时,可在公共电极的电压Vcom的基础上加上正常情况下所需的数据电压,以获得当前需要的数据电压Source,然后再进行输出。这样即使有人体触控导致公共电极的电压Vcom发生变化,但由于数据电压Source随着公共电极电压Vcom的变化而变化,所以可以有效降低数据电压Source与公共电极电压Vcom之间的电压差值,使得像素充电保持一致,保证了显示面板的显示效果。
在实际控制时,如图4a所示,数据电压Source可以与公共电极的电压Vcom保持一致,即,当公共电极的电压Vcom为高电平时,数据电压Source为高电平;当公共电极的电压Vcom为低电平时,数据电压Source为低电平,并且数据电压Source与公共电极电压Vcom之间的电压差值保持不变。另外,数据电压Source与公共电极电压Vcom之间也可以有一定的微小时间差,例如,如图4b所示,公共电极的电压Vcom的上升沿提前于数据电压Source,并且公共电极的电压Vcom的下降沿提前于数据电压Source,当然,公共电极的电压Vcom的上升沿也可以滞后于数据电压Source,下降沿也可以滞后于数据电压Source等,只要在像素点的晶体管关断的瞬间保持同一个电压差即可。
因此,根据本发明实施例的显示面板的充电控制方法,当显示面板的触摸和显示同步进行时,通过控制数据线提供的源极充电电压波形跟随显示面板的公共电极的电压波形进行变化,可以使得显示面板上的每个像素点的充电保持一致,从而有效地改善充电问题,提升画面品质。
进一步地,根据本发明的一个实施例,如图5所示,每个像素点对应设置一个晶体管,晶体管为多列,每列晶体管的源极连接到一条数据线,每列晶体管的漏极连接到公共电极。
具体地,在实际设计中,每行像素点对应的公共电极可以采用一整块电极,或者采用多块电极电连接而成,其中,每个像素点中的晶体管(TFT)的源极与相应的数据线如Source1相连,栅极与相应的栅极线如G1相连,漏极通过充电电容与各自对应的公共电极如Vcom1相连。
当显示面板工作时,外部IC给公共电极供电,同时根据检测的公共电极电压和正常显示所需的数据电压获取当前需要输出的数据电压,即源极充电电压,并将该电压输出至数据线,以使晶体管的源极充电电压与公共电极电压之间的电压差值保持一致,从而使得显示面板上的每个像素点的充电一致,有效地改善了充电问题,提升了画面的品质。
需要说明的是,图1仅作为本发明应用的一个示例,本发明的充电控制方法还可以应用于其它结构的显示面板中,例如,可用于触控电极在CF侧的显示面板中,具体这里不做限制。
综上所述,根据本发明实施例的显示面板的充电控制方法,当显示面板的触摸和显示同步进行时,通过控制数据线提供的源极充电电压波形,以使源极充电电压波形跟随显示面板的公共电极的电压波形进行变化,从而使得显示面板上的每个像素点的充电保持一致,进而有效地改善充电问题,提升画面品质。
图6为根据本发明一个实施例的显示面板的结构示意图。如图6所示,该显示面板可包括:第一电压提供单元10、第二电压提供单元20和调整单元30。
其中,第一电压提供单元10用于向显示面板的公共电极提供电压波形,第二电压提供单元20用于向显示面板的数据线提供源极充电电压波形。调整单元30用于在显示面板的触摸和显示同步进行时,通过控制源极充电电压波形,以使所述源极充电电压波形跟随公共电极的电压波形进行变化。
根据本发明的一个实施例,调整单元30还用于通过控制第二电压提供单元20调整源极充电电压波形,以使源极充电电压波形与公共电极的电压波形保持一致。其中,当公共电极的电压波形为高电平时,源极充电电压波形对应为高电平;当公共电极的电压波形为低电平时,源极充电电压波形对应为低电平。
进一步地,在每个像素点的充电过程中,公共电极的电压与源极充电电压之间的压差保持不变。
具体而言,如图6所示,在显示面板工作时,第一电压提供单元10给公共电极提供的电压波形保持不变,但是第二电压提供单元20输出的数据电压Source(即源极充电电压)不再是维持原有的恒定状态,而是随着公共电极的电压Vcom的变化而变化。具体地,在显示和触控同步进行时,第一电压提供单元10给公共电极供电,同时实时检测公共电极的电压Vcom,其中,在没有人体触控的情况下,公共电极的电压Vcom与第一电压提供单元10提供的电压相同,但在有人体触控的情况下,公共电极的电压Vcom将发生变化,如果此时第二电压提供单元20提供的数据电压Source保持不变,将影响充电的一致性,所以在第二电压提供单元20输出数据电压Source时,先通过调整单元30在公共电极的电压Vcom的基础上加上正常情况下所需的数据电压,以获得当前需要的数据电压Source,然后第二电压提供单元20再进行输出。这样即使有人体触控导致公共电极的电压Vcom发生变化,但由于数据电压Source随着公共电极电压Vcom的变化而变化,所以可以有效降低数据电压Source与公共电极电压Vcom之间的电压差值,使得像素充电保持一致,保证了显示面板的显示效果。
在实际控制时,如图4a所示,数据电压Source可以与公共电极的电压Vcom保持一致,即,当公共电极的电压Vcom为高电平时,数据电压Source为高电平;当公共电极的电压Vcom为低电平时,数据电压Source为低电平,并且数据电压Source与公共电极电压Vcom之间的电压差值保持不变。另外,数据电压Source与公共电极电压Vcom之间也可以有一定的微小时间差,例如,如图4b所示,公共电极的电压Vcom的上升沿提前于数据电压Source,并且公共电极的电压Vcom的下降沿提前于数据电压Source,当然,公共电极的电压Vcom的上升沿也可以滞后于数据电压Source,下降沿也可以滞后于数据电压Source等,只要在像素点的晶体管TFT关断的瞬间保持同一个电压差即可。
因此,根据本发明实施例的显示面板,在显示面板的触摸和显示同步进行时,通过调整单元控制源极充电电压波形跟随公共电极的电压波形进行变化,可以使得显示面板上的每个像素点的充电保持一致,从而有效地改善充电问题,提升画面品质。
进一步地,根据本发明的一个实施例,如图5所示,每个像素点(如像素点41、42和43等)对应设置一个晶体管TFT,晶体管TFT为多列,每列晶体管TFT的源极连接到一条数据线(如数据线Source1、Source2、…),每列晶体管TFT的漏极连接到公共电极(如公共电极Vcom1、Vcom2、…)。
具体地,在实际设计中,每行像素点对应的公共电极可以采用一整块电极,或者采用多块电极电连接而成,其中,每个像素点中的晶体管TFT的源极与相应的数据线如Source1相连,栅极与相应的栅极线如G1相连,漏极通过充电电容与各自对应的公共电极如Vcom1相连。
当显示面板工作时,第一电压提供单元10给公共电极供电,调整单元30根据检测的公共电极电压和正常显示所需的数据电压获取当前需要输出的数据电压,即源极充电电压,并通过第二电压提供单元20将该电压输出至数据线,以使晶体管TFT的源极充电电压与公共电极电压之间的电压差值保持一致,从而使得显示面板上的每个像素点的充电一致,有效地改善了充电问题,提升了画面的品质,而且在公共电极的作用下,能够实现触控功能。
需要说明的是,图6所示的显示面板仅作为示例性说明,具体还可以采用其它的结构形式,例如,可将触控电极设置在CF侧等,具体这里不做限制。
根据本发明实施例的显示面板,在显示面板的触摸和显示同步进行时,通过调整单元控制源极充电电压波形,以使源极充电电压波形跟随公共电极的电压波形进行变化,从而使得显示面板上的每个像素点的充电保持一致,进而有效地改善充电问题,提升画面品质。
此外,本发明的实施例还提出了一种液晶显示器,其包括上述的显示面板。
本发明实施例的液晶显示器,采用上述的显示面板,能够保证显示面板上的每个像素点的充电保持一致,从而有效地改善充电问题,提升画面品质。
在本发明的描述中,需要理解的是,术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。
在本说明书的描述中,参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构或者特点包含于本发明的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且,描述的具体特征、结构或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外,在不相互矛盾的情况下,本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本发明的实施例,可以理解的是,上述实施例是示例性的,不能理解为对本发明的限制,本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。
Claims (9)
1.一种显示面板的充电控制方法,其特征在于,包括以下步骤:
当所述显示面板的触摸和显示同步进行时,通过控制数据线提供的源极充电电压波形,以使所述源极充电电压波形跟随所述显示面板的公共电极的电压波形进行变化。
2.如权利要求1所述的显示面板的充电控制方法,其特征在于,通过调整所述源极充电电压波形以使所述源极充电电压波形与所述公共电极的电压波形保持一致。
3.如权利要求1或2所述的显示面板的充电控制方法,其特征在于,在每个像素点的充电过程中,所述公共电极的电压与源极充电电压之间的压差保持不变。
4.如权利要求1所述的显示面板的充电控制方法,其特征在于,每个所述像素点对应设置一个晶体管,所述晶体管为多列,每列所述晶体管的源极连接到一条数据线,每列所述晶体管的漏极连接到所述公共电极。
5.一种显示面板,其特征在于,包括:
第一电压提供单元,用于向所述显示面板的公共电极提供电压波形;
第二电压提供单元,用于向所述显示面板的数据线提供源极充电电压波形;
调整单元,用于在所述显示面板的触摸和显示同步进行时,通过控制所述源极充电电压波形,以使所述源极充电电压波形跟随所述公共电极的电压波形进行变化。
6.如权利要求5所述的显示面板,其特征在于,所述调整单元还用于通过控制所述第二电压提供单元调整所述源极充电电压波形,以使所述源极充电电压波形与所述公共电极的电压波形保持一致。
7.如权利要求5或6所述的显示面板,其特征在于,在每个像素点的充电过程中,所述公共电极的电压与源极充电电压之间的压差保持不变。
8.如权利要求5所述的显示面板,其特征在于,每个所述像素点对应设置一个晶体管,所述晶体管为多列,每列所述晶体管的源极连接到一条数据线,每列所述晶体管的漏极连接到所述公共电极。
9.一种液晶显示器,其特征在于,包括如权利要求5-8中任一项所述的显示面板。
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WO2019041924A1 (zh) * | 2017-08-30 | 2019-03-07 | 京东方科技集团股份有限公司 | 液晶显示器、显示面板及其充电控制方法 |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101430466A (zh) * | 2007-11-06 | 2009-05-13 | 瀚宇彩晶股份有限公司 | 像素驱动方法、像素驱动装置及液晶显示器 |
CN103018994A (zh) * | 2013-01-09 | 2013-04-03 | 旭曜科技股份有限公司 | 内嵌式多点触控液晶显示面板系统 |
CN104217679A (zh) * | 2014-08-26 | 2014-12-17 | 京东方科技集团股份有限公司 | 像素电路及其驱动方法、显示装置 |
CN104503610A (zh) * | 2014-12-04 | 2015-04-08 | 上海天马微电子有限公司 | 一种触控扫描方法及触控显示面板、显示装置 |
CN204256709U (zh) * | 2014-12-22 | 2015-04-08 | 上海天马微电子有限公司 | 一种触控显示面板及触控显示装置 |
CN104571701A (zh) * | 2014-12-29 | 2015-04-29 | 深圳市华星光电技术有限公司 | 图像均匀性显示的方法、装置及系统 |
CN106557195A (zh) * | 2015-09-30 | 2017-04-05 | 乐金显示有限公司 | 显示设备及其驱动方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8614654B2 (en) * | 2009-07-30 | 2013-12-24 | Apple Inc. | Crosstalk reduction in LCD panels |
KR101106141B1 (ko) | 2010-09-17 | 2012-01-20 | 이성호 | 도트 인버전 방식의 액정패널 구동 방법 및 장치 |
KR101441957B1 (ko) * | 2012-05-24 | 2014-09-18 | 엘지디스플레이 주식회사 | 인-셀 터치 구조 액정표시장치 및 이의 구동방법 |
KR102043299B1 (ko) | 2012-12-26 | 2019-11-11 | 엘지디스플레이 주식회사 | 터치 스크린 일체형 디스플레이 장치와 터치 패널의 검사 방법 |
KR101721611B1 (ko) | 2013-04-30 | 2017-03-30 | 엘지디스플레이 주식회사 | 터치 패널 표시장치, 데이터 드라이버 및 터치 패널 표시장치의 구동방법 |
KR102088421B1 (ko) * | 2013-08-01 | 2020-03-13 | 삼성디스플레이 주식회사 | 터치센서 내장형 액정표시장치 |
TWI534678B (zh) * | 2014-11-21 | 2016-05-21 | 業鑫科技顧問股份有限公司 | 內嵌式觸控顯示裝置及驅動方法 |
CN106128374A (zh) * | 2015-05-06 | 2016-11-16 | 义隆电子股份有限公司 | 非分时触控及显示的内嵌式液晶显示器及其驱动方法 |
WO2016195388A1 (ko) * | 2015-06-04 | 2016-12-08 | 주식회사 실리콘웍스 | 패널을 구동하는 기술 |
CN107369423B (zh) * | 2017-08-30 | 2021-01-26 | 京东方科技集团股份有限公司 | 液晶显示器、显示面板及其充电控制方法 |
-
2017
- 2017-08-30 CN CN201710765604.9A patent/CN107369423B/zh active Active
-
2018
- 2018-05-31 WO PCT/CN2018/089118 patent/WO2019041924A1/zh unknown
- 2018-05-31 US US16/317,630 patent/US11269205B2/en active Active
- 2018-05-31 EP EP18826909.6A patent/EP3678125B1/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101430466A (zh) * | 2007-11-06 | 2009-05-13 | 瀚宇彩晶股份有限公司 | 像素驱动方法、像素驱动装置及液晶显示器 |
CN103018994A (zh) * | 2013-01-09 | 2013-04-03 | 旭曜科技股份有限公司 | 内嵌式多点触控液晶显示面板系统 |
CN104217679A (zh) * | 2014-08-26 | 2014-12-17 | 京东方科技集团股份有限公司 | 像素电路及其驱动方法、显示装置 |
CN104503610A (zh) * | 2014-12-04 | 2015-04-08 | 上海天马微电子有限公司 | 一种触控扫描方法及触控显示面板、显示装置 |
CN204256709U (zh) * | 2014-12-22 | 2015-04-08 | 上海天马微电子有限公司 | 一种触控显示面板及触控显示装置 |
CN104571701A (zh) * | 2014-12-29 | 2015-04-29 | 深圳市华星光电技术有限公司 | 图像均匀性显示的方法、装置及系统 |
CN106557195A (zh) * | 2015-09-30 | 2017-04-05 | 乐金显示有限公司 | 显示设备及其驱动方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019041924A1 (zh) * | 2017-08-30 | 2019-03-07 | 京东方科技集团股份有限公司 | 液晶显示器、显示面板及其充电控制方法 |
US11269205B2 (en) | 2017-08-30 | 2022-03-08 | Beijing Boe Optoelectronics Technology Co., Ltd. | Display panel with charging control as well as liquid crystal display and control method associated therewith |
CN110890075A (zh) * | 2019-11-15 | 2020-03-17 | Tcl华星光电技术有限公司 | 驱动方法、显示面板及显示装置 |
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US20200355952A1 (en) | 2020-11-12 |
WO2019041924A1 (zh) | 2019-03-07 |
EP3678125A1 (en) | 2020-07-08 |
EP3678125B1 (en) | 2024-03-13 |
US11269205B2 (en) | 2022-03-08 |
EP3678125A4 (en) | 2021-06-09 |
CN107369423B (zh) | 2021-01-26 |
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