CN110556077B - 电压输出电路、驱动电路、显示面板及显示装置 - Google Patents

电压输出电路、驱动电路、显示面板及显示装置 Download PDF

Info

Publication number
CN110556077B
CN110556077B CN201910917947.1A CN201910917947A CN110556077B CN 110556077 B CN110556077 B CN 110556077B CN 201910917947 A CN201910917947 A CN 201910917947A CN 110556077 B CN110556077 B CN 110556077B
Authority
CN
China
Prior art keywords
voltage
dividing resistor
voltage output
resistors
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910917947.1A
Other languages
English (en)
Other versions
CN110556077A (zh
Inventor
陈刚
张志广
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BOE Technology Group Co Ltd, Chengdu BOE Optoelectronics Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to CN201910917947.1A priority Critical patent/CN110556077B/zh
Publication of CN110556077A publication Critical patent/CN110556077A/zh
Application granted granted Critical
Publication of CN110556077B publication Critical patent/CN110556077B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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 using controlled light sources
    • G09G3/30Control 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 using controlled light sources using electroluminescent panels
    • G09G3/32Control 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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208Control 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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225Control 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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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 using controlled light sources
    • G09G3/30Control 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 using controlled light sources using electroluminescent panels
    • G09G3/32Control 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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208Control 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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225Control 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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3258Control 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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the voltage across the light-emitting element
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/34Control 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
    • G09G3/36Control 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
    • G09G3/3611Control of matrices with row and column drivers
    • G09G3/3696Generation of voltages supplied to electrode drivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

本申请公开了一种电压输出电路、驱动电路、显示面板及显示装置,其中,电压输出电路,包括多个电阻串联形成的第一分压电阻串,所述第一分压电阻串包括多个电压输入端和多个电压输出端,所述电压输入端的数量大于所述电压输出端的数量,所述第一分压电阻串包括第一分压段和第二分压段;所述第一分压段中至少部分相邻的所述电压输出端之间间隔两个以上所述电阻,每两相邻的所述电压输出端之间间隔的两个以上的所述电阻中至少其中一个并联有开关元件;所述第二分压段中各相邻的所述电压输出端之间均间隔一个所述电阻。上述方案解决了现有技术中采用线性插值获得的GAMMA电压高于目标电压,造成低灰阶显示亮度不足的问题。

Description

电压输出电路、驱动电路、显示面板及显示装置
技术领域
本发明一般涉及显示技术领域,具体涉及一种电压输出电路、驱动电路、显示面板及显示装置。
背景技术
AMOLED(Active-Matrix Organic Light Emitting Diode;有源矩阵有机发光二极管)在显示图片时,需要满足灰阶与亮度的GAMMA 2.2曲线关系。
目前,在相邻电压输入点(亦可称为绑点)通过线性插值的方式获得低灰阶GAMMA电压,但是由于线性插值得到的GAMMA电压高于目标电压,因此得到的亮度曲线低于GAMMA2.2曲线,造成低灰阶显示亮度不足。
发明内容
本申请期望提供一种电压输出电路、驱动电路、显示面板及显示装置,用以解决现有技术中采用线性插值获得的GAMMA电压高于目标电压,造成低灰阶显示亮度不足的问题。
第一方面,本发明提供一种电压输出电路,包括多个电阻串联形成的第一分压电阻串,所述第一分压电阻串包括多个电压输入端和多个电压输出端,所述电压输入端的数量大于所述电压输出端的数量,所述第一分压电阻串包括第一分压段和第二分压段;
所述第一分压段中至少部分相邻的所述电压输出端之间间隔两个以上所述电阻,每两相邻的所述电压输出端之间间隔的两个以上的所述电阻中至少其中一个并联有开关元件;
所述第二分压段中各相邻的所述电压输出端之间均间隔一个所述电阻。
进一步地,所述开关元件为晶体管。
进一步地,各所述电阻的阻值相等。
第二方面,本发明提供一种驱动电路,包括第一分压电阻单元、多路选择单元及第二分压电阻单元,所述第一分压电阻单元的电压输出端与所述多路选择单元的输入端连接,所述多路选择单元的输出端与所述第二分压电阻单元的电压输入端连接,所述第二分压电阻单元为上述的电压输出电路。
进一步地,第一分压电阻单元包括多个串联的电阻。
进一步地,所述多路选择单元包括多个第一多路选择器,各所述第一多路选择器的输入端与所述第一分压电阻单元的电压输出端连接,各所述第一多路选择器的输出端连接一第一电压跟随器,各所述第一电压跟随器的输出端与所述第二分压电阻单元对应的电压输入端一一对应连接;
至少部分所述第一电压跟随器的输出端连接有第二分压电阻串,所述第二分压电阻串的电压输出端连接有第二多路选择器,第二多路选择器的输出端连接一第二电压跟随器,各所述第二电压跟随器的输出端与所述第二分压电阻单元对应的电压输入端一一对应连接。
第三方面,本发明提供一种显示面板,包括上述的驱动电路。
第四方面,本发明提供一种显示装置,包括上述的显示面板。
上述方案,可以通过开关元件的开启与闭合,较为便捷的改变对应灰阶的分压电阻值,提高了电压设定的灵活性,较现有线性插值的方案,本方案实现了非线性调节灰阶电压的目的,且调节后的灰阶电压可以低于或趋近目标电压,使得显示面板显示时得到的亮度曲线符合GAMMA 2.2曲线,提高了低灰阶显示亮度。
附图说明
通过阅读参照以下附图所作的对非限制性实施例所作的详细描述,本申请的其它特征、目的和优点将会变得更明显:
图1为实施本发明实施例电压输出电路的原理图;
图2为实施本发明实施例驱动电路的原理图;
图3为采用线性插值得到的亮度-灰阶图;
图4为本发明实施例得到的亮度-灰阶图;
图5为采用线性插值得到灰阶-GAMMA电压图;
图6为本发明实施例得到灰阶-GAMMA电压图。
具体实施方式
下面结合附图和实施例对本申请作进一步的详细说明。可以理解的是,此处所描述的具体实施例仅仅用于解释相关发明,而非对该发明的限定。另外还需要说明的是,为了便于描述,附图中仅示出了与发明相关的部分。
需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本申请。
本文涉及的电压输出电路、驱动电路可以用于LCD(Liquid Crystal Display;液晶显示器)、OLED(Organic Light-Emitting Diode;有机发光二极管)的GAMMA(伽马)校正,以使显示器件的亮度曲线满足或趋近GAMMA 2.2曲线。
如图1所示,本发明实施例提供的电压输出电路,包括多个电阻R串联形成的第一分压电阻串,第一分压电阻串包括多个电压输入端0gray、1gray、15gray、31gray、64gray……205gray、255gray和多个电压输出端V0、V1、V2、V3、V4……V254、V255,电压输入端的数量大于电压输出端的数量,第一分压电阻串包括第一分压段和第二分压段;第一分压段中至少部分相邻的电压输出端之间间隔两个以上电阻R,每两相邻的电压输出端之间间隔的两个以上的电阻R中至少其中一个并联有开关元件;第二分压段中各相邻的电压输出端之间均间隔一个电阻R。
如图1中,右侧V1-V15的具体电路连接图是左侧V1-V15的放大图,可以理解,左侧V1-V15以一个电阻来进行简化,但其具体的电路连接构成为右侧V1-V15的具体电路连接图。
此外,V15-V31、V31-V64……V205-V255每个区间段均是有多个电压输出端,图中省略未画出,区间段V15-V31实际是包括V15、V16、V17、V18……V30、V31这17个电压输出端,其他区间与此区间同理。
这里所说的电阻R可以是物理结构独立的一个电阻,也可以是一长条电阻中的一段,或由多个子电阻串联形成的一个电阻,子电阻的形式可以与电阻相同,区别可以仅在于阻值不同。
作为其中一种可实现方式,具有多个电压输入端(亦可称为绑点),依次记做0gray、1gray、15gray、31gray、64gray……205gray、255gray可以只在1gray与15gray之间,也即V1-V15的区间段中的部分电阻R中设置并联的开关元件,如V1-V5之间,相邻的电压输出端之间间隔一个电阻R,V5-V13之间,相邻的电压输出端之间间隔两个电阻,当然还可以多于两个电阻,V13-V15之间,相邻的电压输出端之间间隔一个电阻。在V5-V13之间,相邻的电压输出端之间间隔的两个电阻中的其中一个并联一个开关元件,依次表示为SW1、SW2、SW3……SW8,通过开关元件的打开与闭合来控制对应的电阻短路或接入电路。当然还可以是其他的区间段,如V1-V32的区间段中的部分电阻R中设置并联的开关元件等,具体区间段的选择,根据实际的电压调节精细度需要而定。
上述方案,可以通过开关元件的开启与闭合,较为便捷的改变对应灰阶的分压电阻值,提高了电压设定的灵活性,较现有线性插值的方案,本方案实现了非线性调节灰阶电压的目的,且调节后的灰阶电压可以低于或趋近目标电压,使得显示面板显示时得到的亮度曲线符合GAMMA 2.2曲线,提高了低灰阶显示亮度。
进一步地,开关元件为晶体管。该晶体管均可以为薄膜晶体管或场效应管,其可以是p型,也可以是n型。p型与n型的主要区别在于,p型为低电平导通,n型为高电平导通。
进一步地,各电阻R的阻值相等。
如图1所示,在本发明的其中一个方案中V1-V15之间共串联了22个电阻,而在现有技术中通过线性插值的方案中,V1-V15之间仅有14个电阻。以下以两电压输入端V1与V15(亦可称为绑点1gray与15gray)之间的V8、V11为例进行说明。
如图3所示,采用线性差值方案的V8、V11对应灰阶的亮度低于GAMMA 2.2曲线,根据电流公式
Figure BDA0002216648350000051
可知V8、V11对应的两灰阶的Vdata电压偏大,均需减小。
其中,现有技术中采用线性差值方案中:
V8=7/14(V15-V1)=0.5△V;
V11=10/14(V15-V1)=0.714△V;
△V=V15-V1;
也即,如图5所述,采用线性差值方案其电压输出端的电压与灰阶之间是线性关系。其中,横坐标表示灰阶Gray1-15,纵坐标表示电压输出端的电压值VoltageV1-V15。
而采用本发明方案,在开关元件均开启的情况下,即V1-V15之间的电阻均接入电路的情况下:
V8=10/22(V15-V1)=0.454△V;
V11=16/22(V15-V1)=0.727△V
可见,本发明方案,在开关元件开启的情况下,V8处的电压小于现有技术中V8的电压,V11处的电压大于现有技术中V11的电压,为了使得到的灰阶亮度曲线符合或趋近GAMMA2.2曲线,虽然本发明中V8处的电压小于现有技术中V8的电压,但是其还可以继续降低,例如闭合若干个V1-V8之间的开关元件,如闭合两个,此时V8=8/20△V=0.4△V,电压下降成功,依次规律,通过调节开关元件的闭合数量来控制V8的电压,直至V8处的灰阶亮度曲线符合或趋近GAMMA2.2曲线。在开关元件开启的情况下,V11处的电压大于现有技术中V11的电压,例如闭合若干个V1-V11之间的开关元件,如闭合一个,此时V11=15/21△V=0.714△V,电压下降成功,依次规律,通过调节开关元件的闭合数量来控制V11的电压,直至V11处的灰阶亮度曲线符合或趋近GAMMA 2.2曲线。如图4所述,经过上述开关元件的闭合,最终获得了符合或趋近GAMMA 2.2曲线的灰阶亮度曲线。
通过开关元件的闭合来调节电压输出端的电压值,如图6所示,电压输出端的电压与灰阶之间是非线性关系。其中,横坐标表示灰阶Gray1-15,纵坐标表示电压输出端的电压值VoltageV1-V15。
第二方面,如图2所示,本发明实施例提供一种驱动电路,包括第一分压电阻单元1、多路选择单元及第二分压电阻单元,第一分压电阻单元1的电压输出端与多路选择单元的输入端连接,多路选择单元的输出端与第二分压电阻单元的电压输入端连接,第二分压电阻单元为上述实施例的电压输出电路。
多路选择单元根据选择信号来选择第一分压电阻单元1的电压输出端。
该驱动电路的效果及原理参见上述电压输出电路的实施例,这里不再赘述。
进一步地,第一分压电阻单元1包括多个串联的电阻。
进一步地,多路选择单元包括多个第一多路选择器2,各第一多路选择器2的输入端与第一分压电阻单元1的电压输出端连接,各第一多路选择器2的输出端连接一第一电压跟随器3,各第一电压跟随器3的输出端与第二分压电阻单元对应的电压输入端一一对应连接;至少部分第一电压跟随器3的输出端连接有第二分压电阻串5,第二分压电阻串5的电压输出端连接有第二多路选择器4,第二多路选择器4的输出端连接一第二电压跟随器6,各第二电压跟随器6的输出端与第二分压电阻单元对应的电压输入端一一对应连接。
由于第一分压电阻单元1两端电压VGEGOUT、VGS之间电压输出端的电压信号在一个纯电阻+开关的网络中传递,为了提高其驱动能力,在对应的线路中设置了第一电压跟随器3及第二电压跟随器6。
第三方面,本发明提供一种显示面板,包括上述的驱动电路。
显示面板可以是LCD面板或OLED面板。
第四方面,本发明提供一种显示装置,包括上述的显示面板。
显示装置可以是手机、电脑显示器、电视、平板、增强现实眼镜等。
以上描述仅为本申请的较佳实施例以及对所运用技术原理的说明。本领域技术人员应当理解,本申请中所涉及的发明范围,并不限于上述技术特征的特定组合而成的技术方案,同时也应涵盖在不脱离发明构思的情况下,由上述技术特征或其等同特征进行任意组合而形成的其它技术方案。例如上述特征与本申请中公开的(但不限于)具有类似功能的技术特征进行互相替换而形成的技术方案。

Claims (4)

1.一种驱动电路,包括第一分压电阻单元、多路选择单元及第二分压电阻单元,所述第一分压电阻单元的电压输出端与所述多路选择单元的输入端连接,所述多路选择单元的输出端与所述第二分压电阻单元的电压输入端连接,其特征在于,所述第二分压电阻单元为电压输出电路;所述电压输出电路,包括多个电阻串联形成的第一分压电阻串,所述第一分压电阻串包括多个电压输入端和多个电压输出端,其特征在于,所述电压输入端的数量大于所述电压输出端的数量,所述第一分压电阻串包括第一分压段和第二分压段;
所述第一分压段中至少部分相邻的所述电压输出端之间间隔两个以上所述电阻,每两相邻的所述电压输出端之间间隔的两个以上的所述电阻中至少其中一个并联有开关元件;
所述第二分压段中各相邻的所述电压输出端之间均间隔一个所述电阻;
所述多路选择单元包括多个第一多路选择器,各所述第一多路选择器的输入端与所述第一分压电阻单元的电压输出端连接,各所述第一多路选择器的输出端连接一第一电压跟随器,各所述第一电压跟随器的输出端与所述第二分压电阻单元对应的电压输入端一一对应连接;
至少部分所述第一电压跟随器的输出端连接有第二分压电阻串,所述第二分压电阻串的电压输出端连接有第二多路选择器,第二多路选择器的输出端连接一第二电压跟随器,各所述第二电压跟随器的输出端与所述第二分压电阻单元对应的电压输入端一一对应连接。
2.根据权利要求1所述的驱动电路,其特征在于,第一分压电阻单元包括多个串联的电阻。
3.一种显示面板,其特征在于,包括权利要求1-2任一项所述的驱动电路。
4.一种显示装置,其特征在于,包括权利要求3所述的显示面板。
CN201910917947.1A 2019-09-26 2019-09-26 电压输出电路、驱动电路、显示面板及显示装置 Active CN110556077B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910917947.1A CN110556077B (zh) 2019-09-26 2019-09-26 电压输出电路、驱动电路、显示面板及显示装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910917947.1A CN110556077B (zh) 2019-09-26 2019-09-26 电压输出电路、驱动电路、显示面板及显示装置

Publications (2)

Publication Number Publication Date
CN110556077A CN110556077A (zh) 2019-12-10
CN110556077B true CN110556077B (zh) 2021-01-26

Family

ID=68741505

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910917947.1A Active CN110556077B (zh) 2019-09-26 2019-09-26 电压输出电路、驱动电路、显示面板及显示装置

Country Status (1)

Country Link
CN (1) CN110556077B (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11967264B2 (en) 2021-02-22 2024-04-23 Chengdu Boe Optoelectronics Technology Co., Ltd. Method and apparatus for obtaining correspondences between grayscales and grayscale voltages, and display apparatus
CN113409732B (zh) * 2021-06-30 2022-08-02 惠州华星光电显示有限公司 驱动电路以及驱动电路的驱动方法
CN116597782A (zh) * 2023-07-14 2023-08-15 上海视涯技术有限公司 伽马电压产生电路、驱动芯片和近眼显示装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100529853C (zh) * 2006-07-26 2009-08-19 群康科技(深圳)有限公司 伽马电压输出电路及采用该电路的液晶显示器
CN102682715B (zh) * 2012-04-26 2014-07-09 京东方科技集团股份有限公司 灰阶电压产生电路和方法、源极驱动芯片、液晶显示装置
CN103943088B (zh) * 2014-04-11 2016-04-06 京东方科技集团股份有限公司 一种显示面板的伽马电压调节装置及显示装置
CN108597447A (zh) * 2018-07-09 2018-09-28 武汉华星光电半导体显示技术有限公司 一种显示面板灰阶电压的调试方法及装置
CN109584826A (zh) * 2018-12-24 2019-04-05 惠科股份有限公司 驱动电路、显示面板驱动装置和显示装置

Also Published As

Publication number Publication date
CN110556077A (zh) 2019-12-10

Similar Documents

Publication Publication Date Title
CN110556077B (zh) 电压输出电路、驱动电路、显示面板及显示装置
US7808493B2 (en) Displaying apparatus using data line driving circuit and data line driving method
US10255871B2 (en) Display device including a MUX to vary voltage levels of a switching circuit used to drive a display panel
KR100637203B1 (ko) 유기 전계발광 표시장치 및 그 동작방법
US9472140B2 (en) Drive circuit, optoelectronic device, electronic device, and drive method
KR20030081610A (ko) 유기 전계발광 표시장치 및 이의 구동방법
KR20070053222A (ko) 플랫 디스플레이 장치 및 플랫 디스플레이 장치의 구동방법
US11244631B2 (en) Display device
CN109584818B (zh) 伽马分压电路、电压调节方法及液晶显示装置
WO2019053769A1 (ja) 表示装置およびその駆動方法
KR20050026990A (ko) 전류구동장치 및 표시장치
US7852304B2 (en) Driving circuit, system, and method to improve uniformity of column line outputs in display systems
US8638276B2 (en) Organic light emitting display and method for driving the same
US8605122B2 (en) Gamma voltage generation circuit
US20120320096A1 (en) Gamma curve voltage generation
KR20080105626A (ko) 액정 표시 장치 및 그 구동 방법
KR101182300B1 (ko) 액정표시장치의 구동회로 및 이의 구동방법
EP1865604A1 (en) Driving circuit and organic electroluminiscence display thereof
US7800562B2 (en) Display device
US11069278B2 (en) Gamma reference voltage output circuit of display device
US8743102B2 (en) Gamma tab voltage generator
US7649512B2 (en) Organic EL display device, and method for driving the organic EL display device
JP3903770B2 (ja) データ線駆動回路
KR20070069274A (ko) 액정표시장치
KR20200142623A (ko) 감마 보정 회로, 감마 보정을 위한 방법 및 감마 보정 회로를 포함하는 디스플레이 장치

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant