CN107039013B - 一种显示驱动电路板、其驱动方法及显示装置 - Google Patents
一种显示驱动电路板、其驱动方法及显示装置 Download PDFInfo
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Abstract
本发明实施例提供的一种显示驱动电路板、其驱动方法及显示装置,采用在显示驱动电路板中增加显示刷新频率侦测单元和公共电压预存补偿单元的方式;通过显示刷新频率侦测单元检测时序控制电路输出的帧起始信号的显示刷新频率,之后公共电压预存补偿单元根据预先存储的各显示刷新频率与各公共电压的对应关系,确定与显示刷新频率侦测单元输出的显示刷新频率对应的公共电压,并控制电源管理电路输出与显示刷新频率对应的公共电压,使得显示驱动电路板可以根据显示刷新频率的变化,实时调整输出的公共电压为与显示刷新频率所匹配的最佳公共电压,有利于提升显示面板的稳定一致性,且可以缓解闪烁问题,从而提高显示面板的显示质量。
Description
技术领域
本发明涉及显示技术领域,尤指一种显示驱动电路板、其驱动方法及显示装置。
背景技术
目前,在液晶显示面板中,如图1所示,包括:显示面板Panel,与显示面板Panel连接的显示驱动电路板PCB,以及通过覆晶薄膜COF绑定于显示面板Panel的边框处的多个源极驱动芯片IC1、IC2、IC3、IC4。其中,显示驱动电路板PCB包括:时序控制电路(Tcon)和电源管理电路(DC-DC);时序控制电路用于以设定的显示刷新频率向各源极驱动芯片IC1、IC2、IC3、IC4输出帧起始信号(STV)A;电源管理电路用于根据显示面板的特性确定最佳公共电压(Vcom)后,向各源极驱动芯片IC1、IC2、IC3、IC4输出固定的公共电压B。
随着高解析度(UHD、WQ+)、大尺寸(12’-40’)的液晶显示面板的不断发展,液晶显示面板的功耗也在增加。因而出现了许多降低功耗的方法,例如:在显示静态画面时,将显示刷新频率从如图2a所示的60Hz,降低为如图2b所示的45Hz,并通过在两帧画面之间插入媒体流存储帧的方式,可以降低功耗。但是,会引起显示面板Panel特性的稳定一致性变差,显示刷新频率降低会导致闪烁(Flicker)会变差5-10db,使得在低功耗应用下,大大降低了显示面板的显示质量。
因此,如何改善显示面板在变频使用时闪烁变差的问题,是本领域亟需解决的问题。
发明内容
本发明实施例提供一种显示驱动电路板、其驱动方法及显示装置,用以解决现有技术中存在的显示面板在变频使用时闪烁变差的问题。
本发明实施例提供的一种显示驱动电路板,包括:时序控制电路,电源管理电路,显示刷新频率侦测单元,以及公共电压预存补偿单元;其中,
所述时序控制电路,用于以设定的显示刷新频率输出帧起始信号;
所述显示刷新频率侦测单元分别与所述时序控制电路和所述公共电压预存补偿单元电连接,用于检测所述时序控制电路输出的所述帧起始信号的显示刷新频率,并将检测出的所述显示刷新频率输出至所述公共电压预存补偿单元;
所述公共电压预存补偿单元与所述电源管理电路电连接,用于根据预先存储的各所述显示刷新频率与各公共电压的对应关系,确定与所述显示刷新频率侦测单元输出的所述显示刷新频率对应的公共电压,并控制所述电源管理电路输出与所述显示刷新频率对应的公共电压。
另一方面,本发明实施例还提供了一种显示装置,包括:显示面板,以及与所述显示面板连接的本发明实施例提供的上述显示驱动电路板。
另一方面,本发明实施例还提供了一种显示驱动电路板的驱动方法,包括:
时序控制电路在以设定的显示刷新频率输出帧起始信号时,显示刷新频率侦测单元检测所述时序控制电路输出的所述帧起始信号的显示刷新频率,并将检测出的所述显示刷新频率输出至所述公共电压预存补偿单元;
所述公共电压预存补偿单元根据预先存储的各所述显示刷新频率与各公共电压的对应关系,确定与所述显示刷新频率侦测单元输出的所述显示刷新频率对应的公共电压,并控制所述电源管理电路输出与所述显示刷新频率对应的公共电压。
本发明有益效果如下:
本发明实施例提供的一种显示驱动电路板、其驱动方法及显示装置,采用在显示驱动电路板中增加显示刷新频率侦测单元和公共电压预存补偿单元的方式;通过显示刷新频率侦测单元检测时序控制电路输出的帧起始信号的显示刷新频率,并将检测出的显示刷新频率输出至公共电压预存补偿单元,之后公共电压预存补偿单元根据预先存储的各显示刷新频率与各公共电压的对应关系,确定与显示刷新频率侦测单元输出的显示刷新频率对应的公共电压,并控制电源管理电路输出与显示刷新频率对应的公共电压,使得显示驱动电路板可以根据显示刷新频率的变化,实时调整输出的公共电压,以保证输出的公共电压为与显示刷新频率所匹配的最佳公共电压,这样,有利于提升显示面板的稳定一致性,且可以缓解闪烁问题,从而提高显示面板的显示质量,提升客户体验品味。
附图说明
图1为现有技术中的显示面板的结构示意图;
图2a为现有技术中采用60Hz的显示刷新频率进行显示时的示意图;
图2b为现有技术中降频为45Hz的显示刷新频率进行显示时的示意图;
图3为本发明实施例提供的显示驱动电路板的一种结构示意图;
图4a至图4d分别为本发明实施例提供的显示驱动电路板的另四种结构示意图;
图5a至图5c分别为本发明实施例提供的显示驱动电路板的另三种结构示意图;
图6为本发明实施例提供的显示驱动电路板的具体电路结构示意图;
图7为本发明实施例提供的显示驱动电路板的驱动方法的流程图;
图8为本发明实施例提供的显示装置的结构示意图;
图9为本发明实施例提供的显示装置的侧视结构示意图;
图10为本发明实施例提供的显示装置的产品示意图。
具体实施方式
下面结合附图,对本发明实施例提供的显示驱动电路板、其驱动方法及显示装置的具体实施方式进行详细地说明。
本发明实施例提供的一种显示驱动电路板,如图3所示,可以具体包括:时序控制电路100,电源管理电路200,显示刷新频率侦测单元300,以及公共电压预存补偿单元400;其中,
时序控制电路100,用于以设定的显示刷新频率输出帧起始信号(STV)A;
显示刷新频率侦测单元300分别与时序控制电路100和公共电压预存补偿单元400电连接,用于检测时序控制电路100输出的帧起始信号A的显示刷新频率,并将检测出的显示刷新频率输出至公共电压预存补偿单元400;
公共电压预存补偿单元400与电源管理电路200电连接,用于根据预先存储的各显示刷新频率与各公共电压的对应关系,确定与显示刷新频率侦测单元300输出的显示刷新频率对应的公共电压,并控制电源管理电路200输出与显示刷新频率对应的公共电压(Vcom)B。
具体地,在本发明实施例提供的上述显示驱动电路板中,相对于现有技术中的显示驱动电路板增加了显示刷新频率侦测单元300和公共电压预存补偿单元400。通过增加的显示刷新频率侦测单元300可以检测时序控制电路100输出的帧起始信号A的显示刷新频率,并将检测出的显示刷新频率输出至公共电压预存补偿单元400,之后,增加的公共电压预存补偿单元400可以根据预先存储的各显示刷新频率与各公共电压的对应关系,确定与显示刷新频率侦测单元300输出的显示刷新频率对应的公共电压,并控制电源管理电路200输出与显示刷新频率对应的公共电压B。使得显示驱动电路板可以根据显示刷新频率的变化,实时调整输出的公共电压B,以保证输出的公共电压B为与显示刷新频率所匹配的最佳公共电压,这样,有利于提升显示面板的稳定一致性,且可以缓解闪烁问题,从而提高显示面板的显示质量,提升客户体验品味。
在具体实施时,在本发明实施例提供的上述显示驱动电路板中,为了保证显示驱动电路板中各元器件的可靠性和稳定性,增加的显示刷新频率侦测单元300和公共电压预存补偿单元400,可以独立于显示驱动电路板中原有的元器件,即如图3所示,在显示驱动电路板中,时序控制电路100,电源管理电路200,显示刷新频率侦测单元300和公共电压预存补偿单元400相互独立存在。
或者,在具体实施时,在本发明实施例提供的上述显示驱动电路板中,为了提高显示驱动电路板中各元器件的集成性,可以将增加的显示刷新频率侦测单元300和公共电压预存补偿单元400其中之一集成于显示驱动电路板原有的元器件中。
在具体实施时,在本发明实施例提供的上述显示驱动电路板中,例如图4a所示,显示刷新频率侦测单元300可以集成于时序控制电路100内部,以便于时序控制电路100在输出帧起始信号A的同时直接向公共电压预存补偿单元400输出显示刷新频率。或者,如图4b所示,显示刷新频率侦测单元300也可以集成于电源管理电路200内部,在此不做限定。
在具体实施时,在本发明实施例提供的上述显示驱动电路板中,又如图4c所示,公共电压预存补偿单元400可以集成于电源管理电路200内部,以便于电源管理电路200在接收到显示刷新频率侦测单元300输出的显示刷新频率后,可以直接输出对应的公共电压。或者,如图4d所示,公共电压预存补偿单元400也可以集成于时序控制电路100内部,在此不做限定。
进一步地,在具体实施时,在本发明实施例提供的上述显示驱动电路板中,为了更进一步提高显示驱动电路板中各元器件的集成性,可以将增加的显示刷新频率侦测单元300和公共电压预存补偿单元400两者全部集成于显示驱动电路板原有的元器件中。
在具体实施时,在本发明实施例提供的上述显示驱动电路板中,例如图5a所示,显示刷新频率侦测单元300可以集成于时序控制电路100内部,同时,公共电压预存补偿单元400可以集成于电源管理电路200内部,以便于时序控制电路100在输出帧起始信号A的同时直接向电源管理电路200输出显示刷新频率,电源管理电路200在接收到显示刷新频率后,可以直接输出对应的公共电压。或者,图5b所示,显示刷新频率侦测单元300和公共电压预存补偿单元400可以同时集成于时序控制电路100内部,以便于时序控制电路100在输出帧起始信号A的同时直接控制电源管理电路200输出对应的公共电压。或者,如图5c所示,显示刷新频率侦测单元300和公共电压预存补偿单元400也可以同时集成于电源管理电路200内部,以便于电源管理电路200在检测出帧起始信号A的显示刷新频率后直接输出对应的公共电压,在此不做限定。
在具体实施时,在本发明实施例提供的上述显示驱动电路板中,公共电压预存补偿单元400预先存储的各显示刷新频率与各公共电压的对应关系为预先确定的帧起始信号A可能存在的多个显示刷新频率与对应的最佳公共电压之间的对应关系,其中最佳公共电压指的是在该显示刷新频率下可以使驱动的显示面板闪烁最小的公共电压。例如时序控制电路100输出的帧起始信号A可能以70Hz、60Hz、50Hz、40Hz四个显示刷新频率输出。此时,如下表1所示,列举了与这些显示刷新频率对应的公共电压。可以看出一般情况为:显示刷新频率越大,公共电压越小。
频率(Hz) | 70 | - | 60 | - | 50 | - | 40 |
公共电压(V) | 3 | - | 3.3 | - | 3.5 | - | 3.8 |
表1
在具体实施时,在本发明实施例提供的上述显示驱动电路板中,如图6所示,显示刷新频率侦测单元300具体可以采用单片机MCU实现其功能,公共电压预存补偿单元400具体可以采用电可擦除只读存储器EEPROM实现其功能。
基于同一发明构思,本发明实施例还提供了一种显示驱动电路板的驱动方法,由于该方法解决问题的原理与前述一种显示驱动电路板相似,因此该方法的实施可以参见上述显示驱动电路板的实施,重复之处不再赘述。
具体地,本发明实施例提供的一种显示驱动电路板的驱动方法,如图7所示,包括以下步骤:
S701、时序控制电路在以设定的显示刷新频率输出帧起始信号时,显示刷新频率侦测单元检测时序控制电路输出的帧起始信号的显示刷新频率,并将检测出的显示刷新频率输出至公共电压预存补偿单元;
S702、公共电压预存补偿单元根据预先存储的各显示刷新频率与各公共电压的对应关系,确定与显示刷新频率侦测单元输出的显示刷新频率对应的公共电压,并控制电源管理电路输出与显示刷新频率对应的公共电压。
具体地,在本发明实施例提供的上述显示驱动电路板的驱动方法中,通过显示刷新频率侦测单元检测时序控制电路输出的帧起始信号的显示刷新频率,并将检测出的显示刷新频率输出至公共电压预存补偿单元,之后公共电压预存补偿单元根据预先存储的各显示刷新频率与各公共电压的对应关系,确定与显示刷新频率侦测单元输出的显示刷新频率对应的公共电压,并控制电源管理电路输出与显示刷新频率对应的公共电压,使得显示驱动电路板可以根据显示刷新频率的变化,实时调整输出的公共电压,以保证输出的公共电压为与显示刷新频率所匹配的最佳公共电压,这样,有利于提升显示面板的稳定一致性,且可以缓解闪烁问题,从而提高显示面板的显示质量,提升客户体验品味。
基于同一发明构思,本发明实施例还提供了一种显示装置,如图8和图9所示,包括:显示面板Panel,以及与显示面板Panel连接的本发明实施例提供的上述显示驱动电路板PCB。该显示装置可以为:如图10所示的手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。该显示装置的实施可以参见上述显示驱动电路板的实施例,重复之处不再赘述。
具体地,在本发明实施例提供的上述显示装置中,采用在显示驱动电路板中增加显示刷新频率侦测单元和公共电压预存补偿单元的方式;通过显示刷新频率侦测单元检测时序控制电路输出的帧起始信号的显示刷新频率,并将检测出的显示刷新频率输出至公共电压预存补偿单元,之后公共电压预存补偿单元根据预先存储的各显示刷新频率与各公共电压的对应关系,确定与显示刷新频率侦测单元输出的显示刷新频率对应的公共电压,并控制电源管理电路输出与显示刷新频率对应的公共电压,使得显示驱动电路板可以根据显示刷新频率的变化,实时调整输出的公共电压,以保证输出的公共电压为与显示刷新频率所匹配的最佳公共电压,这样,有利于提升显示面板的稳定一致性,且可以缓解闪烁问题,从而提高显示面板的显示质量,提升客户体验品味。
在具体实施时,在本发明实施例提供的上述显示装置中,显示面板Panel可以为:液晶显示面板、有机电致发光显示面板、等离子体显示面板等。该显示面板Panel可以是刚性的显示面板也可以是柔性的显示面板,在此不做限定。
在具体实施时,在本发明实施例提供的上述显示装置中,当显示面板Panel为液晶显示面板时,液晶显示面板一般由相对而置的阵列基板和彩膜基板构成,如图8和图9所示,还可以包括:多个源极驱动芯片IC1、IC2、IC3、IC4,各源极驱动芯片IC1、IC2、IC3、IC4通过覆晶薄膜COF绑定于显示面板Panel的边框处,具体地,各源极驱动芯片IC1、IC2、IC3、IC4一般通过覆晶薄膜COF绑定于显示面板Panel的阵列基板的边框处。源极驱动芯片IC1、IC2、IC3、IC4用于接收显示驱动电路板Panel中时序控制电路100以设定的显示刷新频率输出的帧起始信号,并接收电源管理电路200输出的与显示刷新频率对应的公共电压。
本发明实施例提供的上述显示驱动电路板、其驱动方法及显示装置,采用在显示驱动电路板中增加显示刷新频率侦测单元和公共电压预存补偿单元的方式;通过显示刷新频率侦测单元检测时序控制电路输出的帧起始信号的显示刷新频率,并将检测出的显示刷新频率输出至公共电压预存补偿单元,之后公共电压预存补偿单元根据预先存储的各显示刷新频率与各公共电压的对应关系,确定与显示刷新频率侦测单元输出的显示刷新频率对应的公共电压,并控制电源管理电路输出与显示刷新频率对应的公共电压,使得显示驱动电路板可以根据显示刷新频率的变化,实时调整输出的公共电压,以保证输出的公共电压为与显示刷新频率所匹配的最佳公共电压,这样,有利于提升显示面板的稳定一致性,且可以缓解闪烁问题,从而提高显示面板的显示质量,提升客户体验品味。
显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。
Claims (9)
1.一种显示驱动电路板,包括:时序控制电路,电源管理电路,显示刷新频率侦测单元,以及公共电压预存补偿单元;其中,
所述时序控制电路,用于以设定的显示刷新频率输出帧起始信号;
所述显示刷新频率侦测单元分别与所述时序控制电路和所述公共电压预存补偿单元电连接,用于检测所述时序控制电路输出的所述帧起始信号的显示刷新频率,并将检测出的所述显示刷新频率输出至所述公共电压预存补偿单元;
所述公共电压预存补偿单元与所述电源管理电路电连接,用于根据预先存储的各所述显示刷新频率与各公共电压的对应关系,确定与所述显示刷新频率侦测单元输出的所述显示刷新频率对应的公共电压,并控制所述电源管理电路输出与所述显示刷新频率对应的公共电压,其中,所述公共电压预存补偿单元预先存储的各所述显示刷新频率与各公共电压的对应关系为:所述显示刷新频率越大,所述公共电压越小;所述公共电压预存补偿单元采用电可擦除只读存储器实现其存储功能。
2.如权利要求1所述的显示驱动电路板,其特征在于,所述显示刷新频率侦测单元集成于所述时序控制电路内部。
3.如权利要求1所述的显示驱动电路板,其特征在于,所述显示刷新频率侦测单元集成于所述电源管理电路内部。
4.如权利要求1-3任一项所述的显示驱动电路板,其特征在于,所述公共电压预存补偿单元集成于所述电源管理电路内部。
5.如权利要求1-3任一项所述的显示驱动电路板,其特征在于,所述公共电压预存补偿单元集成于所述时序控制电路内部。
6.一种显示装置,其特征在于,包括:显示面板,与所述显示面板连接的如权利要求1-5任一项所述的显示驱动电路板。
7.如权利要求6所述的显示装置,其特征在于,所述显示面板为液晶显示面板。
8.如权利要求6所述的显示装置,其特征在于,还包括:多个源极驱动芯片,各所述源极驱动芯片通过覆晶薄膜绑定于所述显示面板的边框处;
所述源极驱动芯片用于接收所述显示驱动电路板中所述时序控制电路以设定的显示刷新频率输出的帧起始信号,并接收所述电源管理电路输出的与所述显示刷新频率对应的公共电压。
9.一种显示驱动电路板的驱动方法,其特征在于,包括:
时序控制电路在以设定的显示刷新频率输出帧起始信号时,显示刷新频率侦测单元检测所述时序控制电路输出的所述帧起始信号的显示刷新频率,并将检测出的所述显示刷新频率输出至公共电压预存补偿单元;
所述公共电压预存补偿单元根据预先存储的各所述显示刷新频率与各公共电压的对应关系,确定与所述显示刷新频率侦测单元输出的所述显示刷新频率对应的公共电压,并控制电源管理电路输出与所述显示刷新频率对应的公共电压,其中,所述公共电压预存补偿单元预先存储的各所述显示刷新频率与各公共电压的对应关系为:所述显示刷新频率越大,所述公共电压越小;所述公共电压预存补偿单元采用电可擦除只读存储器实现其存储功能。
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CN113539191B (zh) * | 2021-07-07 | 2022-07-26 | 江西兴泰科技有限公司 | 一种用于降低电子纸功耗的电压驱动波形调试方法 |
CN113674713B (zh) * | 2021-08-20 | 2023-07-18 | 京东方科技集团股份有限公司 | 改善屏幕闪烁的方法、装置及显示装置 |
CN113808514B (zh) * | 2021-09-16 | 2024-01-26 | Tcl华星光电技术有限公司 | 显示屏控制方法、装置、显示屏控制设备和存储介质 |
CN113808515B (zh) | 2021-09-23 | 2022-07-12 | 惠科股份有限公司 | 公共电极结构、驱动方法及显示设备 |
CN113808537A (zh) | 2021-09-23 | 2021-12-17 | 惠科股份有限公司 | 驱动方法、驱动装置及显示设备 |
CN114299891B (zh) * | 2021-12-23 | 2023-04-25 | 长沙惠科光电有限公司 | 显示面板驱动方法、驱动器及显示装置 |
CN114842796B (zh) * | 2022-03-30 | 2023-11-24 | 北京京东方显示技术有限公司 | 显示驱动电路及显示装置 |
JP2023170026A (ja) * | 2022-05-18 | 2023-12-01 | シャープディスプレイテクノロジー株式会社 | 液晶表示装置およびその駆動方法 |
CN115240610A (zh) * | 2022-07-28 | 2022-10-25 | 紫光计算机科技有限公司 | 芯片的电压调整方法、装置、电子设备及存储介质 |
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CN104376820A (zh) * | 2013-08-15 | 2015-02-25 | 友达光电股份有限公司 | 显示装置及其调整方法 |
CN105551425B (zh) * | 2016-03-11 | 2018-10-30 | 京东方科技集团股份有限公司 | 一种图像处理方法及装置 |
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