CN106469539A - 显示面板和像素电路 - Google Patents
显示面板和像素电路 Download PDFInfo
- Publication number
- CN106469539A CN106469539A CN201610628214.2A CN201610628214A CN106469539A CN 106469539 A CN106469539 A CN 106469539A CN 201610628214 A CN201610628214 A CN 201610628214A CN 106469539 A CN106469539 A CN 106469539A
- Authority
- CN
- China
- Prior art keywords
- signal
- reference signal
- light
- electrically connected
- drive signal
- 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.)
- Pending
Links
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 16
- 239000003990 capacitor Substances 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 9
- 230000000052 comparative effect Effects 0.000 claims description 5
- 238000004020 luminiscence type Methods 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 3
- 208000034699 Vitreous floaters Diseases 0.000 claims 9
- 210000001367 artery Anatomy 0.000 claims 4
- 210000003462 vein Anatomy 0.000 claims 4
- 239000000126 substance Substances 0.000 claims 2
- 230000002035 prolonged effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 18
- 230000005611 electricity Effects 0.000 description 3
- 108010076504 Protein Sorting Signals Proteins 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—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 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
- G09G3/3233—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 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 current through the light-emitting element
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—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 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
- G09G3/3233—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 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 current through the light-emitting element
- G09G3/3241—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 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 current through the light-emitting element the current through the light-emitting element being set using a data current provided by the data driver, e.g. by using a two-transistor current mirror
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—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 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
- G09G3/3258—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 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0833—Several active elements per pixel in active matrix panels forming a linear amplifier or follower
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
- G09G2300/0861—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0243—Details of the generation of driving signals
- G09G2310/0259—Details of the generation of driving signals with use of an analog or digital ramp generator in the column driver or in the pixel circuit
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/06—Details of flat display driving waveforms
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/06—Details of flat display driving waveforms
- G09G2310/066—Waveforms comprising a gently increasing or decreasing portion, e.g. ramp
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
- Control Of El Displays (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
本申请公开一种像素电路,包括发光元件、驱动信号产生单元和开关单元。驱动信号产生单元将数据信号与参考信号进行比较,而产生脉宽调变驱动信号,脉宽调变驱动信号的状态依据数据信号与参考信号的比较结果而定。开关单元则电性连接工作电源和该发光元件,并依据脉宽调变驱动信号而产生驱动电流驱动发光元件发光。
Description
技术领域
本发明涉及一种像素电路,特别涉及发光二极管显示面板的像素电路。
背景技术
图1A绘示为公知的模拟驱动的有机发光二极管像素的等效电路图。请参照图1A,公知的有机发光二极管(以下简称OLED)像素10,可以适用在显示装置,并且OLED像素10包括晶体管102和晶体管104。其中,晶体管102的源极端电性连接至数据线112,而栅极端则电性连接扫描线114。另外,晶体管102的漏极端电性连接至晶体管104的栅极端,而晶体管104的漏极端和源极端分别电性连接工作电源VDD以及有机发光二极管106。
当扫描线114被使能时,晶体管102会被导通。此时,数据信号电压Vdata就会被晶体管102传送到晶体管104的栅极端。因此,晶体管104会依据数据信号电压Vdata而被使能,并且依据工作电源VDD而产生驱动电流I1来驱动OLED 106发光。由于在此电路中,驱动电流I1的大小是取决于数据电压Vdata的电位,而并非定电流,因此容易让晶体管104和OLED106发生损坏,而造成元件的寿命较短。
图1B绘示为公知的数字驱动的有机发光二极管像素的等效电路图。请参照图1B,此公知OLED像素14,也可以适用于显示装置,并且此OLED像素14包括驱动电路142、晶体管144和OLED 146。驱动电路142电性连接扫描线152和数据线154,并且驱动电路142还电性连接至晶体管144的栅极端。晶体管144的源极端电性连接至工作电源VDD,而漏极端则电性连接OLED 146。
图1C绘示OLED像素14的信号时序图。请合并参照图1B和图1C,当扫描信号Scan被使能时,驱动电路142会依据数据信号电压Vdata而输出开关信号SW至晶体管144的栅极端。在此,当开关信号SW为低电位时,晶体管144会被启动,而工作电源VDD所产生的驱动电流Idrive就会驱动OLED 146。由于开关信号SW的电压大小是固定的,因此驱动电流Idrive的大小也是固定的。
因此在数字驱动的OLED像素中,OLED 146的亮度是与开关信号SW的工作周期有关。由图1B可知,当开关信号SW的工作周期愈长,OLED 146的亮度愈低,反之,OLED 146的亮度愈高。然而,若是如图1C所示,在图框F1中,开关信号SW的工作周期非常长,例如是75%,此时,大约仅有1/4图框F1时间中,OLED 146是被点亮。换句话说,将近3/4图框F1时间中,OLED 146是熄灭的状态。此时,当下一个图框F2的时间内的扫描信号Scan被使能时,显示画面就会发生闪烁(flicker)的现象。
公知要解决此闪烁现象的方式,就是加快扫描信号扫描的频率。然而,在上述的例子中,就需要将扫描信号扫描的频率增加4倍。这显然是不切实际的作法,因为这样的作法不但导致显示装置的耗能提升,并且使得电路设计更加复杂。此外,由于每一扫描在线的负载会有变化,因此当扫描信号扫描的频率增加时,会导致每一条扫描线后面的像素可能来不及更新,除上述有机发光二极管像素之外,一般发光二极管显示面板也具备上述现象。
因此,相比公知技术而言,要如何解决LED面板闪烁的现象,已成为重要课题之一。
发明内容
本发明的目的为提供一种显示面板和像素电路,可以解决因为像素的工作周期过短而造成闪烁的现象。
为实现上述目的,本发明提供一种像素电路,包括发光元件、驱动信号产生单元和开关单元。驱动信号产生单元将数据信号与参考信号进行比较,而产生脉宽调变驱动信号,脉宽调变驱动信号的状态依据数据信号与参考信号的比较结果而定。开关单元电性连接工作电源和发光元件,并依据脉宽调变驱动信号而产生驱动电流驱动发光元件发光。
在一个实施例中,开关单元是第一晶体管,具有第一源/漏极端,选择性地电性连接工作电源或通过发光元件电性连接工作电源,且第一晶体管具有第二源/漏极端,选择性地通过发光单元而接地或直接接地,且第一晶体管具有栅极端,电性连接驱动信号产生单元,以接收脉宽调变驱动信号。
在一个实施例中,发光元件是发光二极管或有机发光二极管。
在一个实施例中,脉宽调变驱动信号产生单元包括比较器、第二晶体管和电容器。比较器具有第一输入端和第二输入端,第二输入端接收参考信号。第二晶体管接收数据线所发出的数据信号以及扫描线所发出的扫描信号。第二晶体管电性连接至比较器的第一输入端,以依据扫描信号的状态而将数据信号送至第一输入端。电容器的其中一端电性连接第一输入端,另一端则接地,以储存数据信号的电位。其中比较器将储存在电容器中的数据信号的电位与参考信号比较,以产生脉宽调变驱动信号。
在一个实施例中,比较器在参考信号的电位大于输入电压的电位时,输出具有第一状态的脉宽调变驱动信号,且在参考信号的电位小于输入电压的电位时,输出具有第二状态的脉宽调变驱动信号。
在一个实施例中,参考信号是三角波信号、方波信号或弦波信号。
为实现上述目的,本发明提供一种显示面板。显示面板包括基板和多个像素电路。多个像素电路排列于基板。至少其中一个像素电路包括发光元件、驱动信号产生单元和开关单元。驱动信号产生单元,将数据信号与参考信号进行比较,而产生脉宽调变驱动信号,脉宽调变驱动信号的状态依据数据信号与参考信号的比较结果而定。开关单元电性连接工作电源和发光元件,并依据脉宽调变驱动信号而产生驱动电流驱动发光元件发光。
在一个实施例中,开关单元是第一晶体管,具有第一源/漏极端,选择性地电性连接工作电源或通过发光元件电性连接工作电源,且第一晶体管具有第二源/漏极端,选择性地通过发光单元而接地或直接接地,且第一晶体管具有栅极端,电性连接驱动信号产生单元,以接收脉宽调变驱动信号。
在一个实施例中,发光元件是发光二极管或有机发光二极管。
在一个实施例中,驱动信号产生单元包括比较器、第二晶体管和电容器。比较器具有第一输入端和第二输入端,第二输入端接收参考信号。第二晶体管接收数据线所发出的数据信号以及扫描线所发出的扫描信号,第二晶体管电性连接至比较器的第一输入端,以依据扫描信号的状态而将数据信号送至第一输入端。电容器的其中一端电性连接第一输入端,另一端接地,以储存数据信号的电位而产生输入电压。其中比较器将储存在电容器中数据信号的电位与参考信号比较,以产生脉宽调变驱动信号。
在一个实施例中,比较器在参考信号的电位大于输入电压的电位时,输出具有第一状态的脉宽调变驱动信号,且在参考信号的电位小于输入电压的电位时,输出具有第二状态的脉宽调变驱动信号。在一个实施例中,显示面板,进一步包括多条扫描线、多条数据线和多条参考信号线。多条扫描线电性连接像素电路,以传送扫描信号,扫描线朝第一方向延伸,并沿第二方向排列于基板,第一方向和该第二方向彼此实质上互相垂直。多条数据线也电性连接像素电路,以传送数据信号,数据线朝该第二方向延伸,并沿第一方向排列于基板,且每一数据线与每一扫描线彼此交错,而在基板上定义出多个像素区域,使得像素电路分别配置于像素区域中。多条参考信号线也电性连接像素电路,且参考信号线分别传送对应的参考信号。
在一个实施例中,参考信号线沿第一方向或第二方向排列,且其中至少一条参考信号线所传送的参考信号的波形与另一参考信号线所传送的参考信号的波形不同。
在一个实施例中,所有参考信号线所传送的参考信号都相同。
在一个实施例中,参考信号是三角波信号、方波信号或弦波信号。
综上所述,由于本发明是比较数据信号和参考信号来产生脉宽调变驱动信号,并且驱动发光元件发光,因此本发明可以避免画面发生闪烁的现象。另外,本发明在画面闪烁时,只需要调高参考信号Vref的频率,就可以避免闪烁的现象发生,因此本发明不需要复杂的电路,也不会太大的耗能。
附图说明
图1A绘示为公知的模拟驱动的有机发光二极管像素的等效电路图。
图1B绘示为公知的数字驱动的有机发光二极管像素的等效电路图。
图1C绘示图1B的OLED像素的信号时序图。
图2绘示为依照本发明的优选实施例的一种像素电路的方块图。
图3A绘示为依照本发明第一实施例的一种比较器的电路图。
图3B绘示为依照本发明第二实施例的一种比较器的电路图。
图4A绘示为依照本发明第一实施例的一种图2的像素电路的信号时序图。
图4B绘示为依照本发明第二实施例的一种图2的像素电路的信号时序图。
图4C绘示为依照本发明第三实施例的一种图2的像素电路的信号时序图。
图5绘示为依照本发明的优选实施例的一种显示装置的方块图。
图6绘示为依照本发明的实施例的图5显示面板中的信号时序图。
具体实施方式
以下将参照相关附图,说明依据本发明优选实施例的像素电路及显示面板,其中相同的元件将以相同的附图标记加以说明。
图2绘示为依照本发明的优选实施例的一种像素电路的方块图。请参照图2,本实施例所提供的像素电路2包括发光元件22、开关单元24、驱动信号产生单元26和工作电源VDD。开关单元24的一端电性连接发光元件22,而另一端则电性连接工作电源VDD。另外,开关单元24还电性连接驱动信号产生单元26。本发明的像素电路为主动矩阵式阵列电路,其可应用于各类显示装置,例如:户外广告广告牌、照明装置、有机发光二极管显示装置、发光二极管显示装置等,本发明不作限制。
驱动信号产生单元26接收来自数据线的数据信号Data和来自扫描线的扫描信号Scan,并且将数据信号Data和参考信号Vref进行比较,而输出脉宽调变驱动信号PWM至开关单元24。如此一来,开关单元24就可以依据脉宽调变驱动信号PWM而产生驱动电流Idrive,以驱动发光元件22发光。优选地,驱动电流Idrive是固定的大小,本发明并不限定。
开关单元24可以利用第一晶体管242来实现,在本实施例中,第一晶体管242例如是PMOS晶体管,本发明并不限定。第一晶体管242的第一源/漏极端(或称源极端)电性连接工作电源VDD,其第二源/漏极端(或称漏极端)则电性连接发光元件22,并通过发光元件22接地。而在另外一些实施例中,第一晶体管242的源极端可以通过发光元件22电性连接至工作电源VDD,而其漏极端则可以直接接地。另外,在本实施例中,发光元件22可以是有机电致发光二极管,其一端连接第一晶体管242,而另一端则是接地。在其它实施例中,发光元件22也可以是无机发光二极管,本发明并不限定。
请继续参照图2,驱动信号产生单元26包括比较器262、第二晶体管264和电容器266。第二晶体管264的漏极端电性连接数据信号Data,而栅极端则是电性连接扫描信号Scan。另外,第二晶体管264的源极端则是电性连接至比较器262。此外,电容器266的一端电性连接第二晶体管264,另一端接地。在本实施例中,第二晶体管264例如是NMOS晶体管。
比较器262具有第一输入端IN1、第二输入端IN2和输出端OUT。第一输入端IN1电性连接第二晶体管264的源极端,而第二输入端IN2则是接收参考信号Vref。另外,比较器262的输出端OUT则是电性连接至第一晶体管242的栅极端,以将脉宽调变驱动信号PWM输出给第一晶体管242。
图3A绘示为依照本发明第一实施例的一种比较器的电路图。请参照图3A,在本实施例中,比较器262包括晶体管302、304、306、308和310。其中,晶体管302和304为PMOS晶体管,而晶体管306、308和310则是NMOS晶体管。晶体管302和304的源极端电性连接工作电压VCC,而栅极端则彼此电性连接。另外,晶体管302的栅极端和漏极端彼此电性连接。晶体管306和308的漏极端分别电性连接至晶体管302和304的漏极端,其中晶体管308的漏极端电性连接至比较器262的输出端OUT,并且通过输出端OUT电性连接至第一晶体管242的栅极端。此外,晶体管306的栅极端是上述的第一输入端IN1,并且电性连接第二晶体管264的源极端。相对地,晶体管308的栅极端则是上述的第二输入端IN2,并且电性连接参考信号Vref。晶体管310的漏极端电性连接晶体管306和308的源极端,而晶体管310的栅极端和源极端则分别电性连接偏压VBS和接地。
图3B绘示为依照本发明第二实施例的一种比较器的电路图。请参照图3B,在本实施例中,比较器262也包括晶体管312、314、316、318和320。其中,晶体管312和314为NMOS晶体管,而晶体管316、318和320则是PMOS晶体管。晶体管312和314的源极端接地,而栅极端则彼此电性连接。另外,晶体管312的栅极端和漏极端彼此电性连接。晶体管316和318的漏极端分别电性连接至晶体管312和314的漏极端,其中晶体管318的漏极端电性连接至比较器262的输出端OUT,并且通过输出端OUT电性连接至第一晶体管242的栅极端。此外,晶体管316的栅极端是上述的第一输入端IN1,并且电性连接第二晶体管264的源极端。相对地,晶体管318的栅极端则是上述的第二输入端IN2,并且电性连接参考信号Vref。晶体管320的漏极端电性连接晶体管316和318的源极端,而晶体管320的栅极端和源极端则分别电性连接偏压VBS和工作电压VCC。
虽然上述提供了两种不同的比较器电路,然而并不用来限定本发明。本领域具有通常知识者当知,不同的比较器电路并不会影响本发明主要的精神。
图4A绘示为依照本发明第一实施例的一种图2的像素电路的信号时序图。请合并参照图2和图4A,本实施例的信号时序图中绘示了相邻的图框时间F1、F2和F3为例说明。当扫描信号Scan被使能时,代表一个图框时间的开始,而第二晶体管264会被导通。此时,数据信号Data就会通过第二晶体管264而储存在电容器266中。因此,在比较器262的第一输入端IN1就会输入数据信号电压Vdata。接着,比较器262会将数据信号电压Vdata与参考信号Vref进行比对。
在本实施例中,参考信号Vref是三角波信号,然而本发明并不以此为限。在其它的实施例中,参考信号Vref也可以是弦波信号、方波信号、脉冲信号等。当参考信号Vref的电位比数据信号Data的电位(也就是数据信号电压Vdata的电位,图中以虚线表示)低时,比较器262就会输出低电位的脉宽调变驱动信号PWM。相对地,当参考信号Vref的电位比数据信号Data的电位高时,比较器262就会输出具有高电位的脉宽调变驱动信号PWM。当脉宽调变驱动信号PWM是低电位时,第一晶体管242就会被启动,而产生驱动电流Idrive来驱动发光元件(在此以LED为例)22发光。相反的,若是第一晶体管242为NMOS晶体管,则就会在脉宽调变驱动信号PWM是高电位时被启动,进而驱动发光元件22发光。
由于在本发明中,发光元件22是依据脉宽调变驱动信号PWM而被驱动,并且脉宽调变驱动信号PWM是依据数据信号Data与参考信号Vref的比较结果而产生。而特别的是,参考信号Vref的频率大于图框的更新时间(frame time),并且优选地参考信号Vref的频率是图框更新时间的倍数(本发明并不限制),优选地参考信号Vref的频率是图框更新时间的四倍以上,五倍、六倍则更佳。因此,即便在发光元件22以较暗的形式被驱动时,例如为50%以下的亮度被驱动时,发光元件22没有被点亮的时间也不会太长。以25%的亮度为例,在公知的数字驱动技术中(如图1C),OLED 146发光的时间会集中在时间t0中。若是图框的时间为X,则图1C中OLED未被点亮的时间则为X-t0。相对地,在图4A的图框F3的期间内,发光元件22也是以25%的亮度被驱动,但是其被点亮的时间则大致平均分配到时间t1、t2、t3和t4中。换句话说,发光元件22的发光频率大于公知技术中图1C的OLED146的发光频率。如此一来,本实施例就可以解决像素的闪烁现象。另外,在本实施例中,参考信号Vref的各信号起始点F是对齐扫描信号Scan(n+1)的起始时间,因此,在图框F1期间内,上述发光元件22被点亮的时间平均分配在图框F1中。
另外,由于人眼容易在待观察物体的发光频率于180Hz以下,发现闪烁的情况,部分视觉敏锐者,甚至可以在发光频率240Hz以下也可以发现闪烁情况,因此当本发明的像素仍旧有闪烁的现象时,则仅需要调整参考信号Vref的频率,使发光元件22在图框F1期间的发光频率加快(大于180Hz,优选地大于240Hz),就不需要复杂的程序即可以解决闪烁的现象。
图4B绘示为依照本发明第二实施例的一种图2的像素电路的信号时序图。请参照图4B,在本实施例中,参考信号Vref的各信号起始点F并未对齐扫描信号Scan(n+1)的起始时间,因此,在图框F1期间内,上述发光元件22被点亮的时间并不是平均分配在图框F1中。参考信号Vref的各信号起始点F可根据实际应用情况,对齐或不对齐信号Scan(n+1)的起始时间,本发明不作其它限制。
图4C绘示为依照本发明第三实施例的一种图2的像素电路的信号时序图。请参照图4C,在本实施例中,参考信号Vref的波形并非规则。因此,上述发光元件22被点亮的时间也不会平均分配在图框中。
图5绘示为依照本发明的优选实施例的一种显示装置的方块图。请参照图5,本实施例所提供的显示装置5,包括显示面板50,以及多条扫描线SL和多条数据线DL。各扫描线SL朝X方向延伸,并且沿着Y方向依序排列。相对地,各数据线DL朝Y方向延伸,并且沿着X方向依序排列。因此,每一扫描线SL和数据线DL分别围出像素区域PA。其中,扫描线SL和数据线DL彼此不相交。另外,在每一像素区域PA分别配置至少一个像素电路,例如502,并且至少一个像素电路采用图2的像素电路架构。在本实施例中,显示面板50上的所有像素电路皆都采用图2的像素电路架构。其中,各像素电路分别对应电性连接至其中扫描线SL和数据线DL。
此外,显示装置5还包括扫描驱动器52和数据驱动器54。扫描驱动器52电性连接扫描线SL,以输出扫描信号Scan在扫描线SL上传送。相对地,数据驱动器54则是电性连接至数据线DL,并且输出数据信号Data在数据线DL上传送。
另外,特别的是,在本实施例中的显示装置5中,还具有多条参考信号线VL,同样配置于显示面板50上,并且分别电性连接至显示面板50中的像素电路。而这些条参考信号线VL分别传送参考信号Vref给所电性连接的像素电路。在一些实施例中,其中参考信号线VL所传送的参考信号Vref的波形与另一参考信号线VL所传送的参考信号Vref的波形不同。然而,在本实施例中,每一参考信号线VL所传送的参考信号Vref的波形都可以相同,本发明并不限定。
图6绘示为依照本发明的实施例的图5显示面板中的信号时序图。请参照图6,在本实施例中,第n列的参考信号在线所传送的参考信号Vref(n)与第n+1列参考信号在线所传送的参考信号Vref(n+1)的波形并不相同。因此,第n列扫描在线的发光元件LED(n)与第n+1列上的发光元件LED(n+1)的发光模式并不相同。
从图5可知,在本实施例中,整个显示面板可以共享一个参考信号Vref,因此调整起来非常方便。当然,也可以是显示面板上部分的区域共享参考信号Vref,这也保持了系统设计上的弹性。
综上所述,由于本发明是比较数据信号和参考信号来产生脉宽调变驱动信号,并且驱动发光元件发光,因此本发明可以避免画面发生闪烁的现象。另外,本发明在画面闪烁时,只需要调高参考信号Vref的频率,就可以避免闪烁的现象发生,因此本发明不需要复杂的电路,也不会太大的耗能。
以上所述仅为举例性,而非为限制性者。任何未脱离本发明的精神与范畴,而对其进行的等效修改或变更,均应包含在随附的权利要求范围中。
Claims (15)
1.一种像素电路,包括:
发光元件;
驱动信号产生单元,将数据信号与参考信号进行比较,而产生脉宽调变驱动信号,该脉宽调变驱动信号的状态依据该数据信号与该参考信号的比较结果而定;以及
开关单元,电性连接工作电源和该发光元件,并依据该脉宽调变驱动信号而产生驱动电流驱动该发光元件发光。
2.如权利要求第1项所述的像素电路,其中该开关单元是第一晶体管,具有第一源/漏极端,选择性地电性连接该工作电源或通过该发光元件电性连接该工作电源,且该第一晶体管具有第二源/漏极端,选择性地通过该发光单元而接地或直接接地,且该第一晶体管具有栅极端,电性连接该驱动信号产生单元,以接收该脉宽调变驱动信号。
3.如权利要求第1项所述的像素电路,其中该发光元件是发光二极管或有机发光二极管。
4.如权利要求第1项所述的像素电路,其中该脉宽调变驱动信号产生单元包括:
比较器,具有第一输入端和第二输入端,该第二输入端接收该参考信号;
第二晶体管,接收数据线所发出的该数据信号以及扫描线所发出的扫描信号,该第二晶体管电性连接至该比较器的该第一输入端,以依据该扫描信号的状态而将该数据信号送至该第一输入端;以及
电容器,其中一端电性连接该第一输入端,另一端接地,以储存该数据信号的电位,
其中该比较器将储存在该电容器中该数据信号的电位与该参考信号比较,以产生该脉宽调变驱动信号。
5.如权利要求第4项所述的像素电路,其中该比较器在该参考信号的电位大于该输入电压的电位时,输出具有第一状态的脉宽调变驱动信号,且在该参考信号的电位小于该输入电压的电位时,输出具有第二状态的脉宽调变驱动信号。
6.如权利要求第1项所述的像素电路,其中该参考信号是三角波信号、方波信号或弦波信号。
7.一种显示面板,包括:
基板;
多个像素电路,排列于该基板,至少其中一个像素电路包括:
发光元件;
驱动信号产生单元,将数据信号与参考信号进行比较,而产生脉宽调变驱动信号,该脉宽调变驱动信号的状态依据该数据信号与该参考信号的比较结果而定;以及
开关单元,电性连接工作电源和该发光元件,并依据该脉宽调变驱动信号而产生驱动电流驱动该发光元件发光。
8.如权利要求第7项所述的显示面板,其中该开关单元是第一晶体管,具有第一源/漏极端,选择性地电性连接该工作电源或通过该发光元件电性连接该工作电源,且该第一晶体管具有第二源/漏极端,选择性地通过该发光单元而接地或直接接地,且该第一晶体管具有栅极端,电性连接该驱动信号产生单元,以接收该脉宽调变驱动信号。
9.如权利要求第7项所述的显示面板,其中该发光元件是发光二极管或有机发光二极管。
10.如权利要求第7项所述的显示面板,其中该驱动信号产生单元包括:
比较器,具有第一输入端和第二输入端,该第二输入端接收该参考信号;
第二晶体管,接收数据线所发出的该数据信号以及扫描线所发出的扫描信号,该第二晶体管电性连接至该比较器的该第一输入端,以依据该扫描信号的状态而将该数据信号送至该第一输入端;以及
电容器,其中一端电性连接该第一输入端,另一端接地,以储存该数据信号的电位而产生输入电压,
其中该比较器将储存在该电容器中该数据信号的电位与该参考信号比较,以产生该脉宽调变驱动信号。
11.如权利要求第10项所述的显示面板,其中该比较器在该参考信号的电位大于该输入电压的电位时,输出具有第一状态的脉宽调变驱动信号,且在该参考信号的电位小于该输入电压的电位时,输出具有第二状态的脉宽调变驱动信号。
12.如权利要求第8项所述的显示面板,进一步包括:
多条扫描线,电性连接所述像素电路,以传送该扫描信号,所述扫描线朝第一方向延伸,并沿第二方向排列于该基板,该第一方向和该第二方向彼此实质上互相垂直;
多条数据线,电性连接所述像素电路,以传送该数据信号,所述数据线朝该第二方向延伸,并沿该第一方向排列于该基板,且每一所述数据线与各该扫描线彼此交错,而在该基板上定义出多个像素区域,使得各该像素电路分别配置于各该像素区域;以及
多条参考信号线,电性连接所述像素电路,且各所述参考信号线分别传送对应的参考信号。
13.如权利要求第12项所述的显示面板,其中所述参考信号线沿该第一方向或该第二方向排列,且其中至少一条参考信号线所传送的参考信号的波形与另一参考信号线所传送的参考信号的波形不同。
14.如权利要求第12项所述的显示面板,其中所有所述参考信号线所传送的参考信号都相同。
15.如权利要求第7项所述的显示面板,其中该参考信号是三角波信号、方波信号或弦波信号。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW104125303A TW201706978A (zh) | 2015-08-04 | 2015-08-04 | 顯示面板和畫素電路 |
TW104125303 | 2015-08-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN106469539A true CN106469539A (zh) | 2017-03-01 |
Family
ID=56567533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610628214.2A Pending CN106469539A (zh) | 2015-08-04 | 2016-08-03 | 显示面板和像素电路 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20170039935A1 (zh) |
EP (1) | EP3128511A1 (zh) |
CN (1) | CN106469539A (zh) |
TW (1) | TW201706978A (zh) |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107068059A (zh) * | 2017-05-27 | 2017-08-18 | 北京大学深圳研究生院 | 像素装置、驱动像素装置的方法和显示设备 |
CN109272940A (zh) * | 2018-11-15 | 2019-01-25 | 京东方科技集团股份有限公司 | 像素驱动电路及其驱动方法、显示基板 |
CN109686299A (zh) * | 2018-09-21 | 2019-04-26 | 友达光电股份有限公司 | 像素结构 |
CN109741707A (zh) * | 2019-03-14 | 2019-05-10 | 昆山工研院新型平板显示技术中心有限公司 | 一种像素电路和显示面板 |
CN111243521A (zh) * | 2020-03-31 | 2020-06-05 | 厦门天马微电子有限公司 | 像素驱动电路、驱动方法及显示面板 |
CN111402782A (zh) * | 2018-12-14 | 2020-07-10 | 昆山工研院新型平板显示技术中心有限公司 | 一种数字驱动像素电路及数字驱动像素的方法 |
CN111527537A (zh) * | 2017-12-28 | 2020-08-11 | 艾利迪公司 | 具有发光二极管的显示屏 |
WO2020211509A1 (zh) * | 2019-04-19 | 2020-10-22 | 京东方科技集团股份有限公司 | 驱动电路、显示面板及显示面板的制作方法 |
CN111968568A (zh) * | 2020-09-03 | 2020-11-20 | 上海天马微电子有限公司 | 发光面板及显示装置 |
WO2020244129A1 (en) * | 2019-06-03 | 2020-12-10 | Boe Technology Group Co., Ltd. | Pixel driving circuit, driving method, and display apparatus |
TWI714071B (zh) * | 2019-05-01 | 2020-12-21 | 友達光電股份有限公司 | 畫素電路和顯示裝置 |
CN112119448A (zh) * | 2018-05-18 | 2020-12-22 | 株式会社半导体能源研究所 | 显示装置以及显示装置的驱动方法 |
CN112289255A (zh) * | 2019-12-24 | 2021-01-29 | 友达光电股份有限公司 | 显示面板以及其像素电路 |
CN112331131A (zh) * | 2019-07-30 | 2021-02-05 | 群创光电股份有限公司 | 显示装置 |
US10930204B2 (en) | 2019-05-30 | 2021-02-23 | Shanghai Tianma Micro-electronics Co., Ltd. | Pixel circuit, drive method thereof and display panel |
CN113077760A (zh) * | 2017-12-11 | 2021-07-06 | 成都晶砂科技有限公司 | 一种像素驱动电路的驱动方法 |
CN113557562A (zh) * | 2019-01-24 | 2021-10-26 | 拉修姆有限公司 | 背板配置和操作 |
CN113674680A (zh) * | 2021-08-20 | 2021-11-19 | 南京大学 | 一种基于像素分享的pwm驱动电路及驱动方法 |
CN113674681A (zh) * | 2021-08-20 | 2021-11-19 | 南京大学 | 一种基于nmos管的pwm像素电路、驱动方法及显示装置 |
WO2022000695A1 (zh) * | 2020-07-02 | 2022-01-06 | 深圳市华星光电半导体显示技术有限公司 | 一种像素驱动电路、显示面板以及显示装置 |
CN113948040A (zh) * | 2021-11-22 | 2022-01-18 | 合肥视涯技术有限公司 | 显示面板 |
CN114333704A (zh) * | 2021-12-31 | 2022-04-12 | 厦门天马微电子有限公司 | 一种像素驱动电路及其驱动方法、显示面板 |
CN115527483A (zh) * | 2022-09-21 | 2022-12-27 | 北京奕斯伟计算技术股份有限公司 | 像素电路及其控制方法、显示装置 |
CN116013192A (zh) * | 2023-01-28 | 2023-04-25 | 天马微电子股份有限公司 | 微集成电路、微集成电路组件、显示面板及显示装置 |
US11922859B2 (en) | 2018-05-17 | 2024-03-05 | Semiconductor Energy Laboratory Co., Ltd. | Display panel, display device, input/output device, and data processing device |
TWI837990B (zh) * | 2022-12-06 | 2024-04-01 | 錼創顯示科技股份有限公司 | 畫素電路及顯示面板 |
US12106708B2 (en) | 2023-07-24 | 2024-10-01 | Google Llc | Backplane configurations and operations |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10102795B2 (en) * | 2016-06-06 | 2018-10-16 | Mikro Mesa Technology Co., Ltd. | Operating method of display device and display device |
KR102619139B1 (ko) * | 2016-11-30 | 2023-12-27 | 엘지디스플레이 주식회사 | 전계 발광 표시 장치 |
TW202405777A (zh) * | 2017-12-25 | 2024-02-01 | 日商半導體能源研究所股份有限公司 | 顯示器及包括該顯示器的電子裝置 |
TWI668508B (zh) * | 2018-08-13 | 2019-08-11 | 友達光電股份有限公司 | 畫素單元 |
CN112102771B (zh) * | 2019-06-17 | 2022-02-25 | 京东方科技集团股份有限公司 | 像素电路、驱动方法和显示装置 |
TWI707328B (zh) | 2019-09-17 | 2020-10-11 | 友達光電股份有限公司 | 驅動晶片與相關的顯示器 |
CN113327554B (zh) * | 2020-02-28 | 2022-07-08 | 北京小米移动软件有限公司 | 显示控制方法和装置、驱动模组、电子设备 |
TW202145191A (zh) * | 2020-05-20 | 2021-12-01 | 曾世憲 | 使用脈衝寬度調變產生器之畫素電路和顯示裝置 |
KR20220001034A (ko) * | 2020-06-26 | 2022-01-05 | 삼성디스플레이 주식회사 | 표시 장치 및 이의 구동 방법 |
JP7507637B2 (ja) | 2020-08-28 | 2024-06-28 | 三星電子株式会社 | 表示装置及びその制御方法 |
TWI771895B (zh) * | 2021-02-03 | 2022-07-21 | 友達光電股份有限公司 | 畫素電路及其驅動方法 |
CN114446224B (zh) * | 2022-02-15 | 2023-04-14 | 上海天马微电子有限公司 | 像素结构、显示面板及显示设备 |
CN114627805B (zh) * | 2022-05-12 | 2022-08-16 | 镭昱光电科技(苏州)有限公司 | 驱动电路、led单元的驱动方法和显示面板 |
CN115294923B (zh) | 2022-08-29 | 2023-11-21 | 惠科股份有限公司 | 稳压电路及显示面板 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2367413A (en) * | 2000-09-28 | 2002-04-03 | Seiko Epson Corp | Organic electroluminescent display device |
JP3973471B2 (ja) * | 2001-12-14 | 2007-09-12 | 三洋電機株式会社 | デジタル駆動型表示装置 |
JP3854161B2 (ja) * | 2002-01-31 | 2006-12-06 | 株式会社日立製作所 | 表示装置 |
-
2015
- 2015-08-04 TW TW104125303A patent/TW201706978A/zh unknown
-
2016
- 2016-08-03 CN CN201610628214.2A patent/CN106469539A/zh active Pending
- 2016-08-03 EP EP16182625.0A patent/EP3128511A1/en not_active Withdrawn
- 2016-08-03 US US15/227,244 patent/US20170039935A1/en not_active Abandoned
Cited By (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107068059A (zh) * | 2017-05-27 | 2017-08-18 | 北京大学深圳研究生院 | 像素装置、驱动像素装置的方法和显示设备 |
CN107068059B (zh) * | 2017-05-27 | 2019-10-08 | 北京大学深圳研究生院 | 像素装置、驱动像素装置的方法和显示设备 |
CN113077760A (zh) * | 2017-12-11 | 2021-07-06 | 成都晶砂科技有限公司 | 一种像素驱动电路的驱动方法 |
CN111527537A (zh) * | 2017-12-28 | 2020-08-11 | 艾利迪公司 | 具有发光二极管的显示屏 |
US11922859B2 (en) | 2018-05-17 | 2024-03-05 | Semiconductor Energy Laboratory Co., Ltd. | Display panel, display device, input/output device, and data processing device |
CN112119448A (zh) * | 2018-05-18 | 2020-12-22 | 株式会社半导体能源研究所 | 显示装置以及显示装置的驱动方法 |
US11823614B2 (en) | 2018-05-18 | 2023-11-21 | Semiconductor Energy Laboratory Co., Ltd. | Display device and method for driving display device |
CN109686299A (zh) * | 2018-09-21 | 2019-04-26 | 友达光电股份有限公司 | 像素结构 |
CN109272940A (zh) * | 2018-11-15 | 2019-01-25 | 京东方科技集团股份有限公司 | 像素驱动电路及其驱动方法、显示基板 |
US11222594B2 (en) | 2018-12-14 | 2022-01-11 | Chengdu Vistar Optoelectronics Co., Ltd. | Digital pixel driving circuit and digital pixel driving method |
CN111402782A (zh) * | 2018-12-14 | 2020-07-10 | 昆山工研院新型平板显示技术中心有限公司 | 一种数字驱动像素电路及数字驱动像素的方法 |
CN113557562A (zh) * | 2019-01-24 | 2021-10-26 | 拉修姆有限公司 | 背板配置和操作 |
CN109741707A (zh) * | 2019-03-14 | 2019-05-10 | 昆山工研院新型平板显示技术中心有限公司 | 一种像素电路和显示面板 |
WO2020211509A1 (zh) * | 2019-04-19 | 2020-10-22 | 京东方科技集团股份有限公司 | 驱动电路、显示面板及显示面板的制作方法 |
TWI714071B (zh) * | 2019-05-01 | 2020-12-21 | 友達光電股份有限公司 | 畫素電路和顯示裝置 |
US10930204B2 (en) | 2019-05-30 | 2021-02-23 | Shanghai Tianma Micro-electronics Co., Ltd. | Pixel circuit, drive method thereof and display panel |
WO2020244129A1 (en) * | 2019-06-03 | 2020-12-10 | Boe Technology Group Co., Ltd. | Pixel driving circuit, driving method, and display apparatus |
US11289009B2 (en) | 2019-06-03 | 2022-03-29 | Beijing Boe Optoelectronics Technology Co., Ltd. | Pixel driving circuit, driving method, and display apparatus |
CN112331131A (zh) * | 2019-07-30 | 2021-02-05 | 群创光电股份有限公司 | 显示装置 |
CN112331131B (zh) * | 2019-07-30 | 2022-02-22 | 群创光电股份有限公司 | 显示装置 |
CN112289255A (zh) * | 2019-12-24 | 2021-01-29 | 友达光电股份有限公司 | 显示面板以及其像素电路 |
CN112289255B (zh) * | 2019-12-24 | 2022-11-22 | 友达光电股份有限公司 | 显示面板以及其像素电路 |
CN111243521A (zh) * | 2020-03-31 | 2020-06-05 | 厦门天马微电子有限公司 | 像素驱动电路、驱动方法及显示面板 |
WO2022000695A1 (zh) * | 2020-07-02 | 2022-01-06 | 深圳市华星光电半导体显示技术有限公司 | 一种像素驱动电路、显示面板以及显示装置 |
US11410615B2 (en) | 2020-07-02 | 2022-08-09 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Pixel driving circuit, display panel and display device |
CN111968568A (zh) * | 2020-09-03 | 2020-11-20 | 上海天马微电子有限公司 | 发光面板及显示装置 |
US11263938B1 (en) | 2020-09-03 | 2022-03-01 | Shanghai Tianma Micro-electronics Co., Ltd. | Light-emitting panel and display device |
CN113674680B (zh) * | 2021-08-20 | 2023-03-14 | 南京大学 | 一种基于像素分享的pwm驱动电路及驱动方法 |
CN113674681A (zh) * | 2021-08-20 | 2021-11-19 | 南京大学 | 一种基于nmos管的pwm像素电路、驱动方法及显示装置 |
CN113674680A (zh) * | 2021-08-20 | 2021-11-19 | 南京大学 | 一种基于像素分享的pwm驱动电路及驱动方法 |
CN113948040A (zh) * | 2021-11-22 | 2022-01-18 | 合肥视涯技术有限公司 | 显示面板 |
CN114333704A (zh) * | 2021-12-31 | 2022-04-12 | 厦门天马微电子有限公司 | 一种像素驱动电路及其驱动方法、显示面板 |
CN115527483A (zh) * | 2022-09-21 | 2022-12-27 | 北京奕斯伟计算技术股份有限公司 | 像素电路及其控制方法、显示装置 |
TWI837990B (zh) * | 2022-12-06 | 2024-04-01 | 錼創顯示科技股份有限公司 | 畫素電路及顯示面板 |
CN116013192A (zh) * | 2023-01-28 | 2023-04-25 | 天马微电子股份有限公司 | 微集成电路、微集成电路组件、显示面板及显示装置 |
US12106708B2 (en) | 2023-07-24 | 2024-10-01 | Google Llc | Backplane configurations and operations |
Also Published As
Publication number | Publication date |
---|---|
EP3128511A1 (en) | 2017-02-08 |
US20170039935A1 (en) | 2017-02-09 |
TW201706978A (zh) | 2017-02-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106469539A (zh) | 显示面板和像素电路 | |
KR102592012B1 (ko) | 화소 및 이를 포함하는 유기발광 표시장치 | |
JP7066339B2 (ja) | 画素及びこれを用いた有機電界発光表示装置並びにその駆動方法 | |
CN107481673B (zh) | 一种有机发光显示面板及其驱动方法和驱动装置 | |
JP5070266B2 (ja) | 画素及びこれを用いた有機電界発光表示装置 | |
TW574529B (en) | Organic electro-luminescence display device | |
JP5074468B2 (ja) | 画素及びこれを用いた有機電界発光表示装置 | |
CN106531075A (zh) | 有机发光像素驱动电路、驱动方法以及有机发光显示面板 | |
WO2015000249A1 (zh) | 像素电路、显示面板及显示装置 | |
KR101898695B1 (ko) | 유기전계발광 표시장치 및 그의 구동방법 | |
KR101040855B1 (ko) | 발광 제어선 구동부 및 이를 이용한 유기전계발광 표시장치 | |
KR100952814B1 (ko) | 화소 및 이를 이용한 유기전계발광 표시장치 | |
TWI396161B (zh) | 顯示裝置與其驅動方法 | |
KR102099311B1 (ko) | 표시장치 | |
KR20160008706A (ko) | 화소 및 이를 이용한 유기전계발광 표시장치 | |
KR20160010804A (ko) | 유기전계발광 표시장치 및 그의 구동방법 | |
JP2010128491A (ja) | 有機電界発光表示装置及びその駆動方法 | |
US20150379928A1 (en) | Pixel unit, pixel circuit and driving method thereof | |
KR20120060451A (ko) | 유기전계발광 표시장치 및 그의 구동방법 | |
KR20110131959A (ko) | 화소를 포함하는 유기전계발광 표시장치 및 이를 이용한 구동방법 | |
KR20150057547A (ko) | 유기전계발광 표시장치 | |
TW201421442A (zh) | 電激發光畫素電路 | |
TW201619944A (zh) | 畫素單元及其驅動方法 | |
CN104218066A (zh) | 像素及使用该像素的有机发光显示装置 | |
KR102021013B1 (ko) | 화소 및 이를 이용한 유기전계발광 표시장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170301 |
|
WD01 | Invention patent application deemed withdrawn after publication |