CN108538254A - Display panel and its driving method, display device - Google Patents
Display panel and its driving method, display device Download PDFInfo
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- CN108538254A CN108538254A CN201810381183.4A CN201810381183A CN108538254A CN 108538254 A CN108538254 A CN 108538254A CN 201810381183 A CN201810381183 A CN 201810381183A CN 108538254 A CN108538254 A CN 108538254A
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- 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]
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- 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 Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
A kind of display panel and its driving method, display device.Multiple photo-electric conversion elements that the display panel includes multiple pixel units in array distribution and is set between multiple pixel units.Multiple pixel units include each pixel circuit and light-emitting component；Multiple photo-electric conversion elements are each connected with the pixel circuit at least one pixel unit adjacent thereto with light-emitting component, and are configured to power to the pixel circuit and light-emitting component of coupled at least one pixel unit.The display panel can reduce the resistance of the cabling of transmission voltage, the problem of liter so as to avoid voltage drop caused by electric energy loss and cabling and voltage pressure, improve the display quality of display panel.
Description
Technical field
The embodiment of the present disclosure is related to a kind of display panel and its driving method, display device.
Background technology
Micro- light emitting diode (Micro-LED) display device is due to can be by the length micro of light emitting diode (LED) extremely
1% originally is for example contracted to 100 microns (μm) below and compared to Organic Light Emitting Diode (Organic Light
Emitting Diode, OLED) display device have higher light emission luminance and luminous efficiency and lower operation power consumption etc.
Advantage and gradually get more and more people's extensive concerning.Due to These characteristics, Micro-LED can be adapted for mobile phone, display, notes
This computer, digital camera, instrument and meter etc. have the device of display function.
Micro-LED technologies, i.e. LED micros and matrixing technology can will show the red, green, blue three of micron grade
The Micro-LED of color is moved in array substrate.Meanwhile each Micro-LED in array substrate can be considered as one
Individual pixel unit can be lighted by individually driving, so that display device shows sophistication higher, contrast
Stronger picture.
Invention content
A disclosure at least embodiment provides a kind of display panel, includes in multiple pixel units of array distribution and setting
Multiple photo-electric conversion elements between the multiple pixel unit.The multiple pixel unit includes each pixel circuit and hair
Optical element；Pixel electricity of the multiple photo-electric conversion element each and at least one pixel unit adjacent thereto
Road is connected with the light-emitting component, and be configured to coupled at least one pixel unit the pixel circuit and
The light-emitting component power supply.
For example, in the display panel that one embodiment of the disclosure provides, the pixel circuit includes that driving circuit, data are write
Enter circuit and storage circuit.The driving circuit includes control terminal, first end and second end, and configuration flows through described the in order to control
The driving current for driving the light-emitting component luminous of one end and the second end；The data write circuit is connected to institute
It states the control terminal of driving circuit and is configured to that data-signal is written to the control terminal of the driving circuit in response to scanning signal；Institute
It states storage circuit to connect with the first end of the control terminal of the driving circuit and the driving circuit, and is configured to described in storage
The data-signal of data write circuit write-in.
For example, in the display panel that one embodiment of the disclosure provides, the driving circuit includes the first transistor；It is described
Control terminal of the grid of the first transistor as the driving circuit, the first pole of the first transistor is as driving electricity
The first end on road, the second end of the second pole of the first transistor as the driving circuit.
For example, in the display panel that one embodiment of the disclosure provides, the data write circuit includes second transistor；
The gate configuration of the second transistor is to be connected with scanning signal end to receive the scanning signal, the second transistor
First pole is configured to connect with data signal end to receive the data-signal, the second pole of the second transistor be configured to and
The control terminal of the driving circuit connects.
For example, in the display panel that one embodiment of the disclosure provides, the storage circuit includes storage capacitance；It is described to deposit
The first pole that storing up electricity is held is configured to connect with the control terminal of the driving circuit, and the second pole of the storage capacitance is configured to and institute
State the first end connection of driving circuit.
For example, one embodiment of the disclosure provide display panel, further include at least one energy storage device, wherein it is described extremely
Each of few energy storage device is connect at least one photo-electric conversion element, and is configured to store the photoelectric conversion element
The electric energy of part conversion.
For example, in the display panel that one embodiment of the disclosure provides, the energy storage device includes accumulator.
For example, in the display panel that one embodiment of the disclosure provides, the photo-electric conversion element includes solar cell.
For example, in the display panel that one embodiment of the disclosure provides, the solar cell is organic solar batteries.
For example, in the display panel that one embodiment of the disclosure provides, the multiple photo-electric conversion element is connected in parallel.
For example, the display panel that one embodiment of the disclosure provides, further includes pixel defining layer, wherein the pixel defines
Layer includes the opening corresponding to the opening of the light-emitting component and corresponding to the photo-electric conversion element.
A disclosure at least embodiment also provides a kind of display device, including the display surface that disclosure any embodiment provides
Plate.
For example, the display device that one embodiment of the disclosure provides, further includes multi-strip scanning line and multiple data lines.Described
In the case that pixel circuit includes data write circuit, the multi-strip scanning line is correspondingly connected with the pixel electricity of every row pixel unit
The data write circuit on road is to provide scanning signal；The multiple data lines are correspondingly connected with the pixel circuit of each column pixel unit
Data write circuit to provide data-signal.
A disclosure at least embodiment also provides a kind of driving method of display panel, including：The photo-electric conversion element
Convert light energy into electric energy with into coupled at least one pixel unit pixel circuit and light-emitting component power；
Driving current is applied to the light-emitting component so that it shines by the pixel circuit in the pixel unit.
For example, the driving method for the display panel that one embodiment of the disclosure provides, includes driving electricity in the pixel circuit
In the case of road, data write circuit and storage circuit, the driving method includes：Scanning signal and data-signal are inputted, is opened
The data write circuit and the driving circuit are opened, the storage electricity is written in the data-signal by the data write circuit
Driving current is applied to the light-emitting component so that it shines by road, the driving circuit according to the data-signal.
Description of the drawings
In order to illustrate more clearly of the technical solution of the embodiment of the present disclosure, will simply be situated between to the attached drawing of embodiment below
It continues, it should be apparent that, the accompanying drawings in the following description merely relates to some embodiments of the present disclosure, rather than the limitation to the disclosure.
Figure 1A is a kind of schematic diagram of 2T1C pixel circuits；
Figure 1B is the schematic diagram of another kind 2T1C pixel circuits；
Fig. 2 is a kind of schematic block diagram for display panel that one embodiment of the disclosure provides；
Fig. 3 is an exemplary schematic block diagram of the concrete structure of display panel shown in Fig. 2；
Fig. 4 is a kind of exemplary circuit structure diagram of specific implementation of display panel shown in Fig. 3；
Fig. 5 is a kind of connection signal block diagram of the energy storage device for display panel that one embodiment of the disclosure provides；
A kind of planar structure schematic diagram of the pixel defining layer for display panel that one embodiment of Fig. 6 disclosure provides；
Fig. 7 is the sequence diagram for the driving method that one embodiment of the disclosure provides；
Fig. 8 is the circuit diagram that display panel corresponds to the first stage shown in fig. 7 shown in Fig. 4；
Fig. 9 is the circuit diagram that display panel corresponds to second stage shown in fig. 7 shown in Fig. 4；
Figure 10 is the circuit diagram for another display panel that one embodiment of the disclosure provides；And
Figure 11 is a kind of schematic diagram for display device that one embodiment of the disclosure provides.
Specific implementation mode
To keep the purpose, technical scheme and advantage of the embodiment of the present disclosure clearer, below in conjunction with the embodiment of the present disclosure
Attached drawing, the technical solution of the embodiment of the present disclosure is clearly and completely described.Obviously, described embodiment is this public affairs
The a part of the embodiment opened, instead of all the embodiments.Based on described embodiment of the disclosure, ordinary skill
The every other embodiment that personnel are obtained under the premise of without creative work belongs to the range of disclosure protection.
Unless otherwise defined, the technical term or scientific terminology that the disclosure uses should be tool in disclosure fields
There is the ordinary meaning that the personage of general technical ability is understood." first ", " second " and the similar word used in the disclosure is simultaneously
It does not indicate that any sequence, quantity or importance, and is used only to distinguish different component parts.Equally, "one", " one " or
The similar word such as person's "the" does not indicate that quantity limits yet, but indicates that there are at least one." comprising " or "comprising" etc. are similar
Word mean to occur the element before the word either object cover the element for appearing in the word presented hereinafter or object and its
It is equivalent, and it is not excluded for other elements or object.The similar word such as " connection " or " connected " be not limited to physics or
The connection of person's machinery, but may include electrical connection, either directly or indirectly."upper", "lower", " left side ",
" right side " etc. is only used for indicating relative position relation, after the absolute position for being described object changes, then the relative position relation
May correspondingly it change.
The basic pixel circuit used in Micro-LED display devices or OLED display is usually 2T1C pixel electricity
Road utilizes two thin film transistor (TFT)s (Thin-Film Transistor, TFT) and a storage capacitance Cs to realize driving hair
Basic function luminous optical element LED.Figure 1A and Figure 1B is respectively the schematic diagram for showing two kinds of 2T1C pixel circuits.
As shown in Figure 1A, a kind of 2T1C pixel circuits include switching transistor T0, driving transistor N0 and storage capacitance
Cs.For example, the grid of switching transistor T0 connects scan line to receive scanning signal Scan1, such as source electrode is connected to data
For line to receive data-signal Vdata, drain electrode is connected to the grid of driving transistor N0；The source electrode of driving transistor N0 is connected to
For one voltage end to receive first voltage Vdd (high voltage), drain electrode is connected to the positive terminal of LED；One end of storage capacitance Cs connects
To the drain electrode of switching transistor T0 and the grid of driving transistor N0, the other end be connected to driving transistor N0 source electrode and
First voltage end；The negative pole end of LED is connected to second voltage end to receive second voltage Vss (low-voltage, such as ground voltage).
The type of drive of the 2T1C pixel circuits is to control the light and shade (grayscale) of pixel via two TFT and storage capacitance Cs.When
When applying scanning signal Scan1 by scan line to open switching transistor T0, data drive circuit is sent by data line
Data-signal Vdata will charge to storage capacitance Cs via switching transistor T0, and data-signal Vdata is thus stored in storage
In capacitance Cs, and it is brilliant to flow through driving for the conducting degree of the data-signal Vdata control driving transistors N0 of this storage, thus control
Body pipe determines the luminous grayscale of the pixel unit with the size of current for driving LED luminous, i.e. this electric current.In 2T1C shown in figure 1A
In pixel circuit, switching transistor T0 is N-type transistor and driving transistor N0 is P-type transistor.
As shown in Figure 1B, another 2T1C pixel circuits also include switching transistor T0, driving transistor N0 and storage
Capacitance Cs, but its connection type is slightly changed, and driving transistor N0 is N-type transistor.The pixel circuit of Figure 1B relative to
Include in place of the variation of Figure 1A：The positive terminal of LED is connected to first voltage end to receive first voltage Vdd (high voltage), and bears
The extreme drain electrode for being connected to driving transistor N0, the source electrode of driving transistor N0 are connected to second voltage end to receive second voltage
Vss (low-voltage, such as ground voltage).One end of storage capacitance Cs is connected to drain electrode and the driving crystal of switching transistor T0
The grid of pipe N0, the other end are connected to source electrode and the second voltage end of driving transistor N0.The work of the 2T1C pixel circuits
Mode is substantially essentially identical with pixel circuit shown in figure 1A, and which is not described herein again.
In addition, for pixel circuit shown in Figure 1A and Figure 1B, switching transistor T0 is not limited to N-type transistor, can also
For P-type transistor, the polarity for thus controlling the scanning signal Scan1 of its on or off correspondingly change.
Micro-LED display devices generally include multiple pixel units by array arrangement, and each pixel unit for example may be used
To include above-mentioned pixel circuit.In Micro-LED display devices, first voltage Vdd (such as high voltage) and second voltage Vss
(low-voltage, such as ground voltage) is exporting from integrated circuit (Integrated Circuit, IC) and is being sent to pixel unit
During, it has electric current due to there is resistance on cabling, in cabling and flows through, loss is produced electricl energy, so as to cause first voltage Vdd
Voltage drop, the voltage pressure of second voltage Vss rises, to make voltage at the both ends of the LED at the nearly ends IC and the remote ends IC
Or flow through the electric current of the LED there are deviations, it influences to show there are luminance deviation at the nearly ends IC and the remote ends IC so as to cause display screen
Show picture.
A disclosure at least embodiment provides a kind of display panel, includes in multiple pixel units of array distribution and setting
Multiple photo-electric conversion elements between multiple pixel units.Multiple pixel units include each pixel circuit and light-emitting component；
Multiple photo-electric conversion elements are each connected with the pixel circuit at least one pixel unit adjacent thereto with light-emitting component, and
It is configured to power to the pixel circuit and light-emitting component of coupled at least one pixel unit.
A disclosure at least embodiment also provides the driving method and display device corresponding to above-mentioned display panel.
The display panel and its driving method, display device that a disclosure at least embodiment provides, on the one hand, due to display
Photo-electric conversion element range pixel circuit in panel is close, it is possible to reduce the resistance for transmitting the cabling of voltage, so as to avoid
The problem of voltage drop caused by electric energy loss and trace resistances to high voltage and the voltage pressure to low-voltage rise, improves aobvious
Show the display quality of panel；On the other hand, electric energy is converted light energy into realize renewable energy by using photo-electric conversion element
Source efficiently uses, and to save electric energy, reduces the pollution to environment.
Embodiment of the disclosure and its example are described in detail below in conjunction with the accompanying drawings.It should be noted that different
Identical reference numeral is for referring to the identical element described in attached drawing.
Fig. 2 provides a kind of schematic block diagram of display panel 11 for an example of the embodiment of the present disclosure.As shown in Fig. 2, should
Display panel 11 includes the multiple pixel units 111 and multiple light for being set between multiple pixel units 111 in array distribution
Electric transition element 112.
For example, the photo-electric conversion element 112 can luminous energy (such as including sunlight, ambient light (light) and display
The light etc. that device oneself is sent out) it is converted into electric energy, so as to power for display device, thereby reduce the energy of display device
Consumption.Moreover, luminous energy is regenerative resource, therefore it is powered using photo-electric conversion element 112 and has not only saved the energy but also will not
Pollution is generated to environment.For example, the photo-electric conversion element 112 is solar cell, which is, for example, the inorganic sun
Energy battery or organic solar batteries, to prepared respectively with Micro-LED display panels or for OLED display panel
It is mutually compatible in technique.For example, the luminous energy of sunlight is converted into electric energy by solar cell using the photoelectric effect of semiconductor PN.
For example, can generate photoelectric inorganic material has monocrystalline silicon, polysilicon, non-crystalline silicon, GaAs and selenium indium copper etc., this public affairs
The embodiment opened is not restricted this.Organic solar batteries include dye-sensitized solar cells, full stress-strain solar cell,
Macromolecule adulterates inorganic nano-particle solar cell etc., and embodiment of the disclosure is not restricted this.
As shown in Fig. 2, multiple pixel units 111 include each pixel circuit 10 and light-emitting component 20.The pixel circuit 10
Such as the sub-pixel for Micro-LED display panels or the sub-pixel for OLED display panel.For example, the pixel circuit
10 configurations flow through the driving current of light-emitting component 20 to drive light-emitting component 20 to shine in order to control.At least the one of the disclosure
In a embodiment, Micro-LED display panels are for example prepared by silicon substrate, and OLED display panel is for example by glass substrate system
Standby, the conventional method in this field may be used with preparation process in concrete structure, and I will not elaborate, and embodiment of the disclosure
This is not restricted.
As shown in Fig. 2, multiple photo-electric conversion elements 112 are each and at least one pixel unit 111 adjacent thereto
Pixel circuit 10 and light-emitting component 20 connect, and are configured to the pixel circuit to coupled at least one pixel unit 111
10 and light-emitting component 20 power.For example, photo-electric conversion element 112 can only with a picture in a pixel unit 111
Plain circuit 10 and light-emitting component 20 connect, can in multiple pixel units 111 multiple pixel circuits 10 and multiple hairs
Optical element 20 connects, and embodiment of the disclosure is not restricted this.For example, the voltage that the photo-electric conversion element 112 provides is in picture
Light-emitting component 20 is flowed through under the control of plain circuit 10 to drive the light-emitting component 20 to shine.
It should be noted that in order to indicate clear, succinct, illustrated only in Fig. 2 a photo-electric conversion element 112 at least
The connection structure of one pixel unit 111, it is without being limited thereto, can also include multiple such connection structures in display panel 11,
Embodiment of the disclosure is not restricted this.It is another to should be noted that indicate clear, succinct, the display surface is not provided
The entire infrastructure of plate 11.For realize display panel necessary function, those skilled in the art can according to concrete application scene into
Other unshowned structures are arranged in row, and the embodiment of the present invention is without limitation.
Since the photo-electric conversion element 112 is close at a distance from pixel circuit 10 and light-emitting component 20, which turns
Changing the electric energy of the conversion of element 112 can be transmitted to avoid by very long cabling, so as to reduce the cabling of transmission voltage
Resistance, so as to avoid caused by electric energy loss and trace resistances to the voltage drop of high voltage and to low-voltage voltage press rise
The problem of, improve the display quality of display panel, meanwhile, the photo-electric conversion element 112 can convert light energy into electric energy with
It realizes efficiently using for regenerative resource, to save electric energy, reduces the pollution to environment.
Fig. 3 is an exemplary schematic block diagram of the concrete structure of display panel shown in Fig. 2.As shown in figure 3, this is aobvious
Show that pixel circuit 10 includes driving circuit 100, data write circuit 200 and storage circuit 300 in panel 11.
Driving circuit 100 includes control terminal 130, first end 110 and second end 120, and configuration flows through first end in order to control
110 and second end 120 the driving current for driving light-emitting component 20 luminous.The control terminal 130 and first of driving circuit 100
Node N1 connections, the first end 110 of driving circuit 100 is connected with second node N2, such as second node N2 and storage circuit
300 and photo-electric conversion element 112 first end 1121 (such as high level is provided) connection carried with receiving photo-electric conversion element 112
The second end 120 of the electric energy of confession, driving circuit 100 is connect with light-emitting component 20.It is flowed through for example, driving circuit 100 can control
The driving current of light-emitting component 20 is to drive light-emitting component 20 to shine, and " gray scale " that can be as needed shines.For example,
The driving current is provided by photo-electric conversion element 112.For example, LED may be used in light-emitting component 20, and it is configured to and driving circuit
100 second end 120 and second end 1122 (for example, low level is provided) connection of photo-electric conversion element 112, the reality of the disclosure
It includes but not limited to this situation to apply example.
For example, data write circuit 200 is connect with the control terminal 130 (first node N1) of driving circuit 100, and it is configured to
In response to scanning signal by the control terminal 130 of data-signal write driver circuit 100.For example, data write circuit 200 respectively and
Data line (data signal end Vdata), first node N1 and scan line (scanning signal end Gate) connection.For example, from sweeping
Retouch signal end Gate scanning signal be applied to data write circuit 200 with control data write circuit 200 open whether.Example
Such as, data write circuit 200 can be opened in response to scanning signal, so as to which data-signal Vdata write drivers is electric
Then data-signal Vdata can be stored in storage circuit 300, with basis by the control terminal 130 (first node N1) on road 100
Data-signal Vdata generates the luminous driving current of driving light-emitting component 20.For example, the size of data-signal Vdata is determined
The gray scale that the pixel unit is shown is determined.
For example, the control terminal 130 (first node N1) and driving circuit 100 of storage circuit 300 and driving circuit 100
First end 110 (second node N2) connects, and is configured to the data-signal Vdata that storage data write circuit 200 is written.For example,
Storage circuit 300 can store data-signal Vdata and be carried out to driving circuit 100 using the data-signal Vdata of storage
Control.For example, in the case of storage circuit 300 includes storage capacitance, storage circuit 300 can write data into circuit 200
The data-signal Vdata of write-in is stored in storage capacitance, and what it is to utilize storage in such as glow phase includes number
It is believed that the voltage of number Vdata controls driving circuit 100.
As shown in figure 3, light-emitting component 20 includes first end 21 and second end 22 in the display panel 11, light-emitting component 20
First end 21 is configured to receive driving current from the second end 120 of driving circuit 100, and the second end 22 of light-emitting component 20 is configured to
It is connect with the second end 1122 (such as providing low level) of photo-electric conversion element 112.
As shown in figure 3, photo-electric conversion element 112 includes first end 1121 and second end 1122 in the display panel 11.Example
Such as, in this example, the first end 110 (first node N1) of the first end 1121 of photo-electric conversion element 112 and driving circuit 100
It is connected with storage circuit 300 to provide first voltage (such as the first voltage is high level)；The second of photo-electric conversion element 112
End 1122 is connect with the second end 22 of light-emitting component 20 to provide second voltage (for example, the second voltage is low level).
It should be noted that the first end 1121 of the photo-electric conversion element 112 in the presently disclosed embodiments is for example kept
The direct current high level is known as first voltage by input direct-current high level signal, and the second end 1122 of photo-electric conversion element 112 is for example
Input direct-current low level signal is kept, which is known as second voltage；And second voltage is less than first voltage.Below
Each embodiment is identical with this, and is repeated no more.
It should be noted that in the description of the presently disclosed embodiments, symbol Vdata can both indicate data signal end
It can indicate that the level of data-signal, following embodiment are identical with this, repeat no more again.
Since the photo-electric conversion element 112 is close at a distance from pixel circuit 10 and light-emitting component 20, which turns
Changing the electric energy of the conversion of element 112 can be transmitted to avoid by very long cabling, so as to reduce the cabling of transmission voltage
Resistance, so as to avoid caused by electric energy loss and trace resistances to the voltage drop of high voltage and to low-voltage voltage press rise
The problem of, the display quality of display panel is improved, meanwhile, by the photo-electric conversion element 112 to the first of driving circuit 100
End 110 provides first voltage, second voltage is provided to the second end 22 of light-emitting component 20, it is achieved that effective profit of luminous energy
With to save resource.
Fig. 4 is a kind of exemplary circuit structure diagram of specific implementation of display panel shown in Fig. 3.As shown in figure 4, this is aobvious
Show that panel 11 includes pixel circuit 10, light-emitting component LED and photo-electric conversion element 112.As shown in figure 4, the pixel circuit 10 wraps
It includes：First and second transistor T1, T2 and including storage capacitance C.For example, the first transistor T1 is used as driving transistor,
Second transistor T2 is used as switching transistor.For example, light-emitting component LED can be various types, such as top emitting, bottom hair
It penetrates, bilateral transmitting etc., can glow, green light or blue light etc., embodiment of the disclosure is not restricted this.
For example, as shown in figure 4, in more detail, driving circuit 100 can be implemented as the first transistor T1.The first transistor
The grid of T1 is connected as the control terminal 130 of driving circuit 100 with first node N1；The first pole conduct of the first transistor T1
The first end 110 of driving circuit 100 is connected with second node N2；The second pole of the first transistor T1 is as driving circuit 100
Second end 120 is connected with light-emitting component LED.It should be noted that without being limited thereto, driving circuit 100 can also be by others
The circuit of component composition, to realize corresponding function.
Data write circuit 200 can be implemented as second transistor T2.The gate configuration of second transistor T2 is and scans
To receive scanning signal, the first pole of second transistor T2 is configured to connect with data signal end Vdata for signal end Gate connections
To receive data-signal, the second pole of second transistor T2 is configured to and 130 (i.e. first node of the control terminal of driving circuit 100
N1 it) connects.It should be noted that without being limited thereto, data write circuit 200 can also be the circuit being made of other components.
Storage circuit 300 can be implemented as storage capacitance C.The first pole of storage capacitance C is configured to and driving circuit 100
Control terminal 130 (i.e. first node N1) connects, and the second pole of storage capacitance C is configured to and the first end of driving circuit 100 (i.e. the
Two node N2) connection.It should be noted that without being limited thereto, storage circuit 300 can also be the electricity being made of other components
Road, to realize corresponding function.
It should be noted that in embodiment of the disclosure, first node N1 and second node N2 not indicate actually to deposit
Component, but in representative circuit schematic related electrical connection point.
It should be noted that the structure of the pixel circuit in the embodiment of the present disclosure is not limited to circuit shown in Fig. 3 or Fig. 4
Structure, can further include the various pixel circuits with threshold voltage compensation function for example and can be 4T1C, 4T2C or
Other pixel circuits such as 8T1C, embodiment of the disclosure are not restricted this.
The display panel that the embodiment of the present disclosure provides can also include at least one energy storage device.Fig. 5 shows the disclosure
A kind of connection signal block diagram of the energy storage device for display panel that one embodiment provides.As shown in figure 5, at least one energy storage dress
It sets each of 113 to connect at least one photo-electric conversion element 112, and is configured to the electric energy of storage photo-electric conversion element conversion.
As shown in figure 5, multiple photo-electric conversion element 112 is connected in parallel, and it is connect with energy storage device 113 to be converted
Electric energy be stored in energy storage device 113.For example, the electric energy that energy storage device 113 will be received from multiple photo-electric conversion elements 112
It is converted to chemical energy to store, under the conditions of the use environment of display panel does not have light or illumination is insufficient, i.e., photoelectricity turns
Change that element 112 does not work or in the case that working condition is undesirable, it is in pixel unit 11 which, which is then converted to electric energy,
Pixel circuit and 20 (not shown) of light-emitting component be powered so that the display panel no light or illumination not
It can also normally be shown under conditions of foot, ensure that the stability that display device is shown.For example, energy storage device 113 can be with
For accumulator, such as lithium ion battery, nickel-cadmium cell etc..
For example, display panel 11 shown in fig. 5 further includes at least one pixel unit being connect with photo-electric conversion element 112
Pixel circuit 10 in 11 and light-emitting component 20, in order to indicate clear, succinct, the pixel circuit 10 and light-emitting component 20 are in Fig. 5
In be not shown.
It should be noted that the conventional method real-time control opto-electronic conversion in software mode or other this fields can be passed through
The working condition of element 112 and energy storage device 113, details are not described herein.
It should be noted that multiple photo-electric conversion elements 112 can be serially connected after connect with energy storage device 113 with
The electric energy converted is stored in energy storage device 113 or multiple photo-electric conversion elements 112 can mixed connection (both include each other
Series connection also includes parallel connection), specific connection type is determined on a case-by-case basis, and embodiment of the disclosure is not restricted this.
The display panel that the embodiment of the present disclosure provides can also include pixel defining layer.Fig. 6 shows that the disclosure one is implemented
A kind of planar structure schematic diagram of the pixel defining layer for display panel that example provides.As shown in fig. 6, pixel defining layer 114 includes
Opening corresponding to light-emitting component 20 and the opening corresponding to photo-electric conversion element 112, so that display panel is by opening
Mouth can show the light that light-emitting component 20 is sent out and can be by the luminous energy in opening reception external environment for display panel
The luminous energy is converted to electric energy by the photo-electric conversion element 112 in 11.It should be noted that corresponding to light-emitting component 20 opening and
The opening of photo-electric conversion element 112, which can be the same opening, can also be different opening, and position can also regard specific feelings
Depending on condition, embodiment of the disclosure is not restricted this.
For example, as shown in fig. 6, pixel defining layer 114 is arranged on underlay substrate, the pixel defining layer 114 is for limiting
Multiple pixel units of array substrate.As shown in fig. 6, the pixel defining layer 114 includes multiple openings, at least partly set in opening
Set the structures such as pixel circuit 10, light-emitting component 20 or photo-electric conversion element 112.For example, the material of pixel defining layer 114 can wrap
Include organic insulating material or inorganic insulating material, organic insulating material for example including polyimides, polyamide, acrylic resin,
One or more in phenolic resin, the embodiment of the present disclosure is not construed as limiting the material of pixel defining layer 114.
Fig. 7 is a kind of signal timing diagram for display panel that one embodiment of the disclosure provides.With reference to letter shown in Fig. 7
Number sequence diagram, illustrates the operation principle of display panel 11 shown in Fig. 4, and here using each transistor as p-type crystalline substance
It is illustrated for body pipe, but embodiment of the disclosure is without being limited thereto.
As shown in fig. 7, the display process of each frame image includes two stages, respectively first stage 1 and second stage
The timing waveform of each signal in each stage is shown in 2, Fig. 7.
It should be noted that Fig. 8 is circuit signal of the display panel 11 shown in Fig. 4 corresponding to the first stage 1 in Fig. 7
Figure, Fig. 9 are the circuit diagram that display panel 11 corresponds to second stage 2 in Fig. 7 shown in Fig. 4.Broken line representation is used in Fig. 9
Transistor indicate to be in cut-off state within the corresponding stage, dotted line with the arrow indicates that display panel 11 exists in Fig. 8 and Fig. 9
Current direction in the corresponding stage.Transistor shown in Fig. 8 and Fig. 9 is illustrated by taking P-type transistor as an example, i.e., each crystalline substance
The grid of body pipe is connected when accessing low level, and ends when accessing high level.Following embodiment is identical with this, no longer superfluous
It states.
In the first stage 1, scanning signal and data-signal, turn-on data write circuit 200 and driving circuit 100 are inputted,
For data write circuit 200 by data-signal Vdata write storage circuits 300, driving circuit 100 will according to data-signal Vdata
Driving current is applied to light-emitting component LED so that it shines.
As shown in Figure 7 and Figure 8, in the first stage 1, second transistor T2 are scanned the low level conducting of signal, and first is brilliant
Body pipe T1 is connected by the low level of first node N1.
As shown in figure 8, in the first stage 1, a data write paths (as shown in dotted line 1 with the arrow in Fig. 8) are formed,
Data-signal Vdata carries out charge or discharge by second transistor T2 to storage capacitance C, to write data-signal Vdata
Enter in storage capacitance C, meanwhile, the level of first node N1 becomes the level of data-signal Vdata.As shown in fig. 7, the data are believed
The level of number Vdata is low level, and the low level of data-signal Vdata can carry out fluctuating up and down in a certain range,
So that data-signal Vdata includes the low level of different values, and the low level of the different values within the scope of this can
So that the first transistor (driving transistor) conducting, so as to according to the variation of the level of data-signal Vdata control the
The conducting degree of one transistor T1 (driving transistor), to which control flows through the first transistor T1 to drive light-emitting component LED to send out
The size of the electric current of light, so that light-emitting component LED shows different grayscale.When between first node N1 and second node N2
When voltage difference is more than threshold voltage vt h, the first transistor T1 conductings, to make light-emitting component LED under the action of driving current
It shines.It should be noted that Vth indicates the threshold voltage of the first transistor T1, due in the present embodiment, the first transistor T1
It is illustrated by taking P-type transistor as an example, so threshold voltage vt h can be a negative value herein.In other embodiments, if
The first transistor T1 is N-type transistor, then threshold voltage vt h can be a positive value.
As shown in figure 8, in this stage, a driving light emitting path is formed simultaneously (such as 2 institute of dotted line with the arrow in Fig. 8
Show), since the first transistor T1 is connected, driving current can be provided to light-emitting component LED, light-emitting component LED is in driving current
Under the action of shine.
In second stage 2, light-emitting component LED keeps the luminance in the first stage 1, until it is aobvious to carry out next frame image
When showing, shining for corresponding " gray scale " is carried out according to the data-signal Vdata re-write.
As shown in figures 7 and 9, in second stage 2, second transistor T2 is scanned the high level cut-off of signal, and first is brilliant
Body pipe T1 is connected by the low level of first node N1.
As shown in figure 9, in second stage 2, form a driving light emitting path (as shown in dotted line with the arrow in Fig. 9).
In this stage, first node N1 keeps the level in the first stage 1, the i.e. level of data-signal Vdata, the first transistor T1
Continue to be held under the control of the level of first node N1.It, can be to light-emitting component LED since the first transistor T1 is connected
Driving current is provided, light-emitting component LED shines under the action of driving current.
It should be noted that the transistor used in the presently disclosed embodiments all can be thin film transistor (TFT) or field-effect
Transistor or other characteristics identical switching device are illustrated by taking thin film transistor (TFT) as an example in the presently disclosed embodiments.
Here the source electrode of the transistor used, drain electrode can be symmetrical in structure, so its source electrode, drain electrode can be in structure
It is not different.In the presently disclosed embodiments, in order to distinguish the two poles of the earth of transistor in addition to grid, directly describe wherein
One extremely the first pole, another extremely the second pole.
In addition, it is necessary to illustrate, the transistor in display panel 11 shown in Fig. 4 is by taking P-type transistor as an example
It illustrates, at this point, first extremely can be source electrode, second extremely can be drain electrode.Transistor in display panel 11 can also
P-type transistor and N-type transistor are used only with N-type transistor or mixing, is only needed the end of the transistor of selection type simultaneously
Mouth polarity is accordingly connected according to the port polarity of the respective transistor in embodiment of the disclosure.
For example, as shown in Figure 10, in another example, the first transistor T1 and second transistor T2 are all made of N-type crystalline substance
Body pipe, connection type difference lies in：The first end of light-emitting component LED and the first end 1121 of photo-electric conversion element 112 connect
It connects, the second end of light-emitting component LED is connected with the second pole of the first transistor T1, the second end 1122 of photo-electric conversion element 112
It is connected with second node N2.It should be noted that be supplied at this time the first transistor T1 and second transistor T2 signal (such as
Data-signal and scanning signal) level needs be changed to high level accordingly.For example, in this example, data-signal Vdata
Level be high level, and the high level of data-signal Vdata can carry out in a certain range up and down fluctuate so that
Data-signal Vdata includes the high level of different values, and the high level of the different values within the scope of this can make first
Transistor (driving transistor) is connected, so as to control the first transistor T1 according to the variation of the level of data-signal Vdata
The conducting degree of (driving transistor), to which control flows through the first transistor T1 with the electric current that drives light-emitting component LED luminous
Size, so that light-emitting component LED shows different grayscale.Institute in the operation principle and Fig. 4 of display panel shown in Figure 10
The operation principle of the display panel shown is similar, and details are not described herein.
It should be noted that when using N-type transistor, indium gallium zinc (Indium Gallium Zinc may be used
Oxide, IGZO) active layer as thin film transistor (TFT), relative to using low temperature polycrystalline silicon (Low Temperature Poly
Silicon, LTPS) or active layer of the non-crystalline silicon (such as amorphous silicon hydride) as thin film transistor (TFT), crystal can be effectively reduced
The size of pipe and prevent leakage current.
The embodiment of the present disclosure also provides a kind of display device 1, and as shown in figure 11, which includes that the disclosure is any
Display panel 11, multi-strip scanning control line GL and a plurality of data signal line DL that embodiment provides.For example, the display panel 11 wraps
It includes and the multiple pixel units in array distribution limited is intersected according to multi-strip scanning control line GL and a plurality of data signal line DL
111.For example, in the case that the pixel circuit 10 in pixel unit 111 includes data write circuit 200, multi-strip scanning line pair
The scanning signal end Gate that the data write circuit 200 of the pixel circuit 10 of every row pixel unit 111 should be connected to is swept with providing
Retouch signal；Multiple data lines are correspondingly connected with the data of the data write circuit 200 of the pixel circuit 10 of each column pixel unit 111
Signal end Vdata is to provide data-signal.For example, each pixel unit 111, which is connected to a scan line GL, (provides scanning letter
Number) and a data line DL (data-signal is provided).
It should be noted that illustrating only the pixel unit 111 of part, scan control line GL and data-signal in fig. 11
Line DL.For example, each pixel unit 111 may include any pixel circuit 10 provided in above-described embodiment, such as including Fig. 4
Shown in pixel circuit 10.It should be noted that without being limited thereto, which can also be with threshold voltage compensation
The various pixel circuits of function other pixel circuits such as can be 4T1C, 4T2C or 8T1C, embodiment of the disclosure is to this
It is not restricted.
As shown in figure 11, which can also include gate drivers 12, data driver 14 and timing controller
13.The gate drivers 12 are for driving multi-strip scanning signal wire GL；The data driver 14 is for driving a plurality of data-signal
Line DL；The timing controller 13 is carried for handling from 1 externally input image data RGB of display device, to data driver 14
For processing image data RGB and export scan control signal GCS and data to gate drivers 12 and data driver 14
Signal DCS is controlled, to control gate drivers 12 and data driver 14.
For example, gate drivers 12 according to multiple scan control signal GCS from timing controller 13 to multiple scannings
Control line GL provides multiple gating signals.Multiple gating signals are determined on a case-by-case basis, for example, in the embodiments of the present disclosure can be with
Including scanning signal.These signals are supplied to each pixel unit 111 by multiple scan control line GL.
For example, data driver 14 controls letter using reference gamma voltage according to multiple data from timing controller 13
The digital image data RGB inputted from timing controller 13 is converted into data-signal Vdata by number DCS.Data driver 14 to
A plurality of data signal line DL provides the data-signal Vdata of conversion.
For example, timing controller 13 handles to match the big of display panel 11 externally input image data RGB
Small and resolution ratio, then to the image data that carries that for processing of data driver 14.13 use of timing controller is outside display device
Synchronizing signal (such as Dot Clock DCLK, data enable signal DE, horizontal synchronizing signal Hsync and the vertical synchronization of portion's input
Signal Vsync) generate multi-strip scanning control signal GCS and a plurality of data controlling signal DCS.Timing controller 13 is respectively to grid
Driver 12 and data driver 14 provide the scan control signal GCS generated and data controlling signal DCS, are driven for grid
The control of dynamic device 12 and data driver 14.
For example, gate drivers 12 and data driver 14 can be implemented as semiconductor chip.The display device 1 can be with
Including other component, such as signal decoding circuit, voltage conversion circuit etc., existing routine portion for example may be used in these components
Part, I will not elaborate.
For example, display device 1 provided in this embodiment can be Electronic Paper, mobile phone, tablet computer, television set, display,
Any product or component with display function such as laptop, Digital Frame, navigator.
The technology of the display panel 11 provided in embodiment of the disclosure can be provided about the technique effect of display device 1
Effect, which is not described herein again.
Embodiment of the disclosure also provides a kind of driving method, the display that can be used for that embodiment of the disclosure is driven to provide
Panel 11.For example, the driving method includes：
Photo-electric conversion element 112 converts light energy into electric energy with into coupled at least one pixel unit 111
Pixel circuit 10 and light-emitting component 20 are powered；
Driving current is applied to light-emitting component 20 so that it shines by the pixel circuit 10 in pixel unit 111.
For example, including driving circuit 100,200 and of data write circuit in pixel circuit 10 in the example depicted in fig. 3
In the case of storage circuit 300, which includes following operation：
Input scanning signal and data-signal, turn-on data write circuit 200 and driving circuit 100, data write circuit
Driving current is applied to light-emitting component by data-signal write storage circuit 300, driving circuit 100 by 200 according to data-signal
20 so that it shines.
It should be noted that the detailed description about the driving method can refer in embodiment of the disclosure for display
The description of the operation principle of panel 11, which is not described herein again.
Driving method provided in this embodiment, on the one hand, the resistance that the cabling of transmission voltage can be reduced, so as to avoid
The problem of rising is pressed to the voltage drop of high voltage and to low-voltage voltage caused by electric energy loss and trace resistances, improves display
On the other hand the display quality of panel can convert light energy into electric energy to realize efficiently using for regenerative resource, to save
About electric energy, reduces the pollution to environment.
The above, the only specific implementation mode of the disclosure, but the protection domain of the disclosure is not limited thereto, this public affairs
The protection domain opened should be based on the protection scope of the described claims.
Claims (15)
1. a kind of display panel includes multiple pixel units in array distribution and is set between the multiple pixel unit
Multiple photo-electric conversion elements；Wherein,
The multiple pixel unit includes each pixel circuit and light-emitting component；
The pixel circuit in each and adjacent thereto at least one pixel unit of the multiple photo-electric conversion element
It is connected with the light-emitting component, and is configured to the pixel circuit to coupled at least one pixel unit and institute
State light-emitting component power supply.
2. display panel according to claim 1, wherein the pixel circuit includes driving circuit, data write circuit
And storage circuit；
The driving circuit includes control terminal, first end and second end, and configuration flows through the first end and described the in order to control
The driving current for driving the light-emitting component luminous at two ends；
The data write circuit is connected to the control terminal of the driving circuit and is configured to believe data in response to scanning signal
The control terminal of number write-in driving circuit；
The storage circuit is connect with the first end of the control terminal of the driving circuit and the driving circuit, and is configured to deposit
Store up the data-signal of the data write circuit write-in.
3. display panel according to claim 2, wherein the driving circuit includes the first transistor；
Control terminal of the grid of the first transistor as the driving circuit, the first pole of the first transistor is as institute
State the first end of driving circuit, the second end of the second pole of the first transistor as the driving circuit.
4. display panel according to claim 2, wherein the data write circuit includes second transistor；
The gate configuration of the second transistor is to be connected with scanning signal end to receive the scanning signal, second crystal
First pole of pipe is configured to be connected with data signal end to receive the data-signal, the second pole configuration of the second transistor
To be connected with the control terminal of the driving circuit.
5. display panel according to claim 2, wherein the storage circuit includes storage capacitance；
First pole of the storage capacitance is configured to connect with the control terminal of the driving circuit, the second pole of the storage capacitance
It is configured to connect with the first end of the driving circuit.
Further include at least one energy storage device 6. according to any display panels of claim 1-5, wherein it is described at least
Each of one energy storage device is connect at least one photo-electric conversion element, and is configured to store the photo-electric conversion element
The electric energy of conversion.
7. display panel according to claim 6, wherein the energy storage device includes accumulator.
8. according to any display panels of claim 1-5, wherein the photo-electric conversion element includes solar cell.
9. display panel according to claim 8, wherein the solar cell is organic solar batteries.
10. according to any display panels of claim 1-5, wherein the multiple photo-electric conversion element is connected in parallel.
Further include pixel defining layer, wherein the pixel defining layer 11. according to any display panels of claim 1-5
Include the opening corresponding to the light-emitting component and the opening corresponding to the photo-electric conversion element.
12. a kind of display device includes the display panel as described in claim 1-11 is any.
13. display device according to claim 12 further includes multi-strip scanning line and multiple data lines；Wherein, described
In the case that pixel circuit includes data write circuit,
The multi-strip scanning line is correspondingly connected with the data write circuit of the pixel circuit of every row pixel unit to provide scanning letter
Number；
The multiple data lines are correspondingly connected with the data write circuit of the pixel circuit of each column pixel unit to provide data letter
Number.
14. a kind of driving method of display panel as described in claim 1-11 is any, including：
The photo-electric conversion element converts light energy into electric energy with the picture into coupled at least one pixel unit
Plain circuit and light-emitting component power supply；
Driving current is applied to the light-emitting component so that it shines by the pixel circuit in the pixel unit.
15. the driving method of display panel according to claim 14 includes driving circuit, data in the pixel circuit
In the case of write circuit and storage circuit, the driving method includes：
Scanning signal and data-signal are inputted, the data write circuit and the driving circuit are opened,
Wherein, the storage circuit is written in the data-signal by the data write circuit, and the driving circuit is according to
Driving current is applied to the light-emitting component so that it shines by data-signal.
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| CN201810381183.4A CN108538254A (en) | 2018-04-25 | 2018-04-25 | Display panel and its driving method, display device |
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