CN108258148A - OLED display panel and its driving method and display device - Google Patents
OLED display panel and its driving method and display device Download PDFInfo
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- CN108258148A CN108258148A CN201810048777.3A CN201810048777A CN108258148A CN 108258148 A CN108258148 A CN 108258148A CN 201810048777 A CN201810048777 A CN 201810048777A CN 108258148 A CN108258148 A CN 108258148A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/82—Cathodes
- H10K50/822—Cathodes characterised by their shape
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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
Abstract
The disclosure provides a kind of OLED display panel and its driving method and display device, belongs to display technology field.The OLED display panel includes：First electrode layer, the second electrode lay, the luminescent layer between the first electrode layer and the second electrode lay and with the second electrode lay be electrically connected pixel-driving circuit described in the second electrode lay include it is multiple in matrix form arrangement block type electrodes, and close to the pixel-driving circuit the block type electrode area be less than far from the pixel-driving circuit the block type electrode area.By being designed using differentiation multiple block type electrodes, the area of distal end block type electrode is big, and arrives the connection line width of pixel-driving circuit；And the area of proximal end block type electrode is small, the connecting line to pixel-driving circuit is narrow, so as to maximumlly to reduce cathode far and near end difference caused by segmentation, approach distal end block type electrode and the resistance of the connecting line of proximal end block type electrode to pixel-driving circuit.
Description
Technical field
This disclosure relates to display technology field, in particular to a kind of OLED display panel and its driving method and shows
Showing device.
Background technology
OLED (Organic Light Emitting Diode, Organic Light Emitting Diode) is because of its low energy consumption, self-luminous, width
Visual angle, can be increasingly becoming the important development direction of display industry at fast response time around the advantages that rolling over.
In general, the advantages of in order to maximumlly play OLED, show OLED more intelligent, in the prior art by OLED
Cathode carry out patterned process, for example the performances such as touch-control, pressure sensitivity, light sensation are integrated into OLED, so as to realize become more meticulous, it is excellent
Matter, lightening product.But when being patterned to cathode, often inevitably face because patterning segmentation causes
Display screen distance end resistance holds mismatch, and the display quality of display screen is caused to be deteriorated, life of product is also resulted in and shortens.
Therefore, also there is the part that has much room for improvement in technical solution of the prior art.
It should be noted that information is only used for strengthening the reason to the background of the disclosure disclosed in above-mentioned background technology part
Solution, therefore can include not forming the information to the prior art known to persons of ordinary skill in the art.
Invention content
The disclosure is designed to provide a kind of OLED display panel and its driving method and display device, and then at least exist
One or more is overcome the problems, such as caused by the limitation of the relevant technologies and defect to a certain extent.
Other characteristics and advantages of the disclosure will be by the following detailed description apparent from or partially by this public affairs
The practice opened and acquistion.
According to one aspect of the disclosure, a kind of OLED display panel is provided, including：
First electrode layer；
The second electrode lay；
Luminescent layer between the first electrode layer and the second electrode lay；And
The pixel-driving circuit being electrically connected with the second electrode lay；
Wherein described the second electrode lay includes multiple block type electrodes in matrix form arrangement, and close to the pixel driver
The area of the block type electrode of circuit is less than the area of the block type electrode far from the pixel-driving circuit.
In a kind of exemplary embodiment of the disclosure, further include：
Connecting line, for connecting the block type electrode and the pixel-driving circuit, and close to the pixel-driving circuit
The block type electrode and the pixel-driving circuit between the width of connecting line be less than far from the pixel-driving circuit
The width of connecting line between the block type electrode and the pixel-driving circuit.
In a kind of exemplary embodiment of the disclosure, the multiple block type electrode is according to the pixel-driving circuit
Distance is arranged line by line from small to large, and in the connecting line of the block type electrode with a line to the pixel-driving circuit
Length and width is identical.
In a kind of exemplary embodiment of the disclosure, the pixel-driving circuit is by the connecting line in same
The capable block type electrode provides numerical value identical reference voltage.
In a kind of exemplary embodiment of the disclosure, the pixel-driving circuit is to close to the pixel-driving circuit
The numerical value for the reference voltage that the block type electrode provides, which is more than to the block type electrode far from the pixel-driving circuit, to be provided
Reference voltage numerical value.
In a kind of exemplary embodiment of the disclosure, the block type electrode positioned at same row is described in the extraction of the same side
Connecting line.
In a kind of exemplary embodiment of the disclosure, the block type electrode that is partly arranged in block type electrode described in multiple row
The lead direction of connecting line is opposite with the lead direction of the connecting line of the block type electrode that remainder arranges.
According to the second aspect of the disclosure, a kind of display device is also provided, including using above-described OLED display surfaces
Plate.
According to the third aspect of the disclosure, a kind of driving method of Organic Light Emitting Diode OLED display panel is also provided,
For controlling the driving of above-described OLED display panel, including：
In the display stage, according to capable distribution, multiple block type electrodes in matrix form arrangement into second electrode carry respectively
For different reference voltages.
In a kind of exemplary embodiment of the disclosure, into cathode it is multiple in matrix form arrangement block type electrode according to
Capable distribution provides different reference voltages and includes respectively：
The data look-up table of the OLED display panel is obtained, is shown wherein recording the OLED in the data look-up table
The resistance and voltage drop of panel distal end block type electrode and proximal end block type electrode；
According to the mapping of picture to be shown and the data look-up table, obtain opposite with described picture each region to be shown
The reference voltage for the block type electrode answered, wherein the number of reference voltage provided to the block type electrode close to pixel-driving circuit
Value is more than the numerical value of the reference voltage provided to the block type electrode far from the pixel-driving circuit.
The OLED display panel and its driving method and display device that some embodiments of the disclosure provide, on the one hand, logical
It crosses and multiple block type electrodes is designed using differentiation, the area of distal end block type electrode is big, and arrives the connecting line of pixel-driving circuit
It is wide；And the area of proximal end block type electrode is small, the connecting line to pixel-driving circuit is narrow, thus maximumlly to reduce cathode because dividing
Far and near end difference, the resistance for making distal end block type electrode to the connecting line of pixel-driving circuit are arrived with proximal end block type electrode caused by cutting
The resistance of the connecting line of pixel-driving circuit approaches；On the other hand, display the stage, according to capable distribution to multiple block type electrodes
Different reference voltages is provided respectively, the voltage of block type electrode is output to by compensating the pixel-driving circuit during display
Value is the same, voltage loss difference caused by connecting line resistance difference after compensation segmentation, after solving cathode segmentation, because of far and near end block
The voltage difference of shape electrode is inconsistent to lead to the non-uniform problem of display image quality.
It should be understood that above general description and following detailed description are only exemplary and explanatory, not
The disclosure can be limited.
Description of the drawings
Attached drawing herein is incorporated into specification and forms the part of this specification, shows the implementation for meeting the disclosure
Example, and for explaining the principle of the disclosure together with specification.It should be evident that the accompanying drawings in the following description is only the disclosure
Some embodiments, for those of ordinary skill in the art, without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Conventional segmentation cabling mode schematic diagram when Fig. 1 shows to pattern OLED in disclosure related embodiment.
Fig. 2 shows the structure diagrams of a kind of OLED display panel provided in the embodiment of the present disclosure.
Fig. 3 shows the circuit diagram of typical 2T1C pixel-driving circuits in the embodiment of the present disclosure.
Fig. 4 shows the distribution schematic diagram of multiple block type electrodes in Fig. 2 cathodes in the embodiment of the present disclosure.
Fig. 5 shows the flow chart of the driving method of a kind of OLED display panel provided in another embodiment of the disclosure.
Fig. 6 shows to provide the schematic diagram of reference voltage in another embodiment of the disclosure to block type electrodes multiple shown in Fig. 4.
Fig. 7 shows the reference electricity provided respectively to distal end block type electrode and proximal end block type electrode in another embodiment of the disclosure
The oscillogram of pressure.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to example set forth herein；On the contrary, these embodiments are provided so that the disclosure will more
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Attached drawing is only the disclosure
Schematic illustrations, be not necessarily drawn to scale.Identical reference numeral represents same or similar part in figure, thus
Repetition thereof will be omitted.
In addition, described feature, structure or characteristic can be incorporated in one or more implementations in any suitable manner
In mode.In the following description, many details are provided to fully understand embodiment of the present disclosure so as to provide.So
And it will be appreciated by persons skilled in the art that one in the specific detail can be omitted with technical solution of the disclosure
Or more or may be used other methods, constituent element, device, step etc..In other cases, it is not shown in detail or describes
Known features, method, apparatus, realization, material or operation are to avoid a presumptuous guest usurps the role of the host and all aspects of this disclosure is caused to become mould
Paste.
Herein, " inside ", " outside " directional terminology refer respectively to towards the side of liquid crystal layer and away from liquid crystal layer
Side, for example, referring to one layer towards liquid crystal layer of underlay substrate on the inside of underlay substrate.In addition, " on ", " under ", " left side " with
And the directional terminologies such as " right side " are defined relative to the orientation that display device signal is put in attached drawing.It is it is to be understood that above-mentioned
Directional terminology is opposite concept, they be used for relative to description and clarification, can be placed according to display device
The variation in orientation and correspondingly change.
By touch-control, pressure sensitivity, photosensitive when sensing functions are integrated in OLED in the related embodiment of the disclosure, to be production
Product realize High precision, high quality, lightening, pattern OLED by facing.It is conventional when Fig. 1 shows to pattern OLED
Segmentation cabling mode schematic diagram, as shown in Figure 1, when the cathode to OLED patterns, handled using even partition, i.e.,
Each block type electrode 01 it is equal in magnitude, and each block type electrode (distal end block type electrode or proximal end block type electrode) arrives
02 width of cabling of pixel-driving circuit (Integrated Circuit, integrated circuit) (not shown in figure 1) is also consistent, in this way
It is easy to cause the impedance Z of proximal end block type electrode (the shorter block type electrode of cabling i.e. between pixel-driving circuit)Proximal endIt is small, and it is remote
Hold the impedance Z of block type electrode (the longer block type electrode of cabling i.e. between pixel-driving circuit)DistallyGreatly so that shown
When, far and near end block type electrode is there are inconsistent voltage difference, i.e. the anode tap of OLED device corresponding to the block type electrode of proximal end
Pressure drop is small, and display brightness is high, and the pressure drop of the anode tap of the OLED device corresponding to the block type electrode of distal end is big, and display brightness is low, from
And cause display image quality uneven, while the uneven service life that can also influence screen of long-term display image quality.
It should be noted that if when touch function is integrated in OLED, block type electrode here can correspond to tactile
Control unit；If when pressure sensitivity function is integrated in OLED, block type electrode here can correspond to voltage-controlled element；It if will
When photosensitive function is integrated in OLED, block type electrode here can correspond to photosensitive unit.
Based on the above problem, the disclosure provides far and near terminal voltage difference caused by one kind can solve the segmentation of OLED cathodes and differs
Cause causes picture to show non-uniform problem.
Fig. 2 shows a kind of structure diagram for OLED display panel that the disclosure provides, as shown in Fig. 2, the OLED is shown
Panel includes：First electrode layer 21, the second electrode lay 22 and shining between first electrode layer 21 and the second electrode lay 22
Layer 23, luminescent layer 23 include hole injection layer, hole transmission layer, organic luminous layer, electron transfer layer and electron injecting layer successively,
Wherein hole injection layer is adjacent with anode, and electron injecting layer is adjacent with cathode.
In an embodiment of the present invention, first electrode layer 21 can be anode, and the second electrode lay 11 can be cathode.At this
In invention other embodiment, it can also be that the second electrode lay is cathode hereinafter using first electrode layer as anode in the present embodiment
For illustrate, therefore hereinafter after represented with anode 21, cathode 22.
As shown in Fig. 2, the OLED display panel further includes underlay substrate 24, anode 21 is formed on the underlay substrate 24,
It it should be noted that underlay substrate 24 here is flexible, can also be rigid, can be selected according to specific requirements
It selects.
In addition, further including pixel-driving circuit (not shown) in the OLED display panel, pixel-driving circuit is used
It, being capable of persistently lighting for OLED in providing anode 21 from corresponding voltage to OLED luminescent devices and cathode 22 in the display stage
Realization condition is provided.Exist in addition, further including peripheral drive circuit (usually simplifying becomes driving circuit) in OLED display panel
Each pixel when row, column scanning is effective into OLED display panel inputs corresponding scanning signal and data-signal, with reality
Excessive restriction and explanation are not done peripheral drive circuit in the write-in of existing gradation data herein.
Fig. 3 shows the circuit diagram of typical 2T1C pixel-driving circuits, as shown in figure 3, the driving circuit includes switch
Transistor M1, driving transistor M2, storage capacitance C and OLED (Organic Light Emitting Diode, organic light emission two
Pole pipe), the grid connection scan line SW of switching transistor M1, the drain electrode of switching transistor M1 connects data line Vdata, opens respectively
The grid of the source electrode connection driving transistor M2 of transistor M1 is closed, the both ends of storage capacitance C are connected to the grid of driving transistor M2
Between the source electrode of pole and driving transistor M2, the source electrode of driving transistor M2 connects the first power supply ELVDD, driving transistor M2's
The anode of drain electrode connection OLED, the cathode connection second source ELVSS of OLED.
It should be noted that the pixel-driving circuit shown in Fig. 3 is only a kind of example, in specific circuit design,
The structure of driving circuit can be changed according to demand, carried as long as meeting the first power supply ELVDD by driving transistor M2 to anode
For the first supply voltage, second source ELVSS is connected with cathode, and provides second source voltage to cathode, wherein second
Supply voltage is exactly reference voltage, is shown so that corresponding OLED luminescent devices carry out picture.
By carrying out patterned process to cathode 22 in the present embodiment, cathode 22 is divided into multiple block type electrodes, and will
The functions such as touch-control, pressure sensitivity, light sensation are integrated among these block type electrodes of cathode 22.The touch-control of structural representation OLED shown in Fig. 2
For display panel, using embedded (in-cell) touch-control structure, cathode 22 therein is split multiplexing as touch-control electricity
Pole, therefore it is used as public electrode in display stage cathode 22；And in the touch-control stage, cathode 22 is multiplexed with touch control electrode, and
A layer insulating 25 is provided on touch control electrode (i.e. cathode 22), for protecting OLED display device.
Fig. 4 shows the distribution schematic diagram of multiple block type electrodes in Fig. 2 cathodes, as shown in figure 4, wherein cathode 22 is including multiple
In matrix form arrange block type electrode 01, multiple block type electrodes according to the distance to pixel-driving circuit from small to large line by line into
Row arrangement, and the area of the block type electrode close to pixel-driving circuit is less than the face of the block type electrode far from pixel-driving circuit
Product.
In addition, as shown in figure 4, connecting line is further included in OLED display panel, for connecting block type electrode and above-mentioned Fig. 3
Shown pixel-driving circuit, and in the connecting line length and width phase of the block type electrode with a line to pixel-driving circuit
Together, the length and width of the connecting line in the block type electrode do not gone together to pixel-driving circuit is also different, i.e., is driven close to pixel
The width of connecting line between the block type electrode and pixel-driving circuit of dynamic circuit is less than the bulk electricity far from pixel-driving circuit
The width of connecting line between pole and pixel-driving circuit.
Only schematically anticathode segmentation situation illustrates by taking 3 row, 4 row block type electrode as an example in Fig. 4.1st row block shape
Electrode is the distal end block type electrode of range pixel driving circuit farther out, and area is larger, and connecting line is wider；2nd row block type electrode is
The closer proximal end block type electrode of range pixel driving circuit, area is smaller, and connecting line is more relatively narrow；3rd row block shape electricity
The extremely proximal end block type electrode of range pixel driving circuit more recently, area is smaller, and connecting line is more narrower.Connecting line
Width as the length of connecting line shortens and becomes smaller, and close to pixel-driving circuit block type electrode and pixel-driving circuit
Between connecting line it is more shorter, far from pixel-driving circuit block type electrode and pixel-driving circuit between connecting line it is longer
Some.
According to resistance calculations formula R=Rs*L/W, wherein Rs is the blocky resistance of cathode material, and W is that each block type electrode arrives
The width of the connecting line of pixel-driving circuit, L are length of each block type electrode to the connecting line of pixel-driving circuit.Block in Fig. 2
Shape electrode area is equal in magnitude, if block type electrode to the connecting line of pixel-driving circuit width all, resistance with
It connects the elongated of line length and increases so that the resistance of the connecting line of distal end block type electrode to pixel-driving circuit and proximal end are blocky
There is notable difference in the resistance of electrode to the connecting line of pixel-driving circuit.
The embodiment of the present invention is by designing multiple block type electrodes using differentiation, according to above-mentioned resistance calculations formula, far
The area for holding block type electrode is big, since the length of the connecting line of distal end block type electrode to pixel-driving circuit is longer, needs
By the wider of connecting line design；And the area of proximal end block type electrode is small, the length to the connecting line of pixel-driving circuit is shorter
Some, need to design connecting line it is narrower so that distal end block type electrode to the connecting line of pixel-driving circuit resistance with
The resistance of proximal end block type electrode to the connecting line of pixel-driving circuit approaches, and it is far and near caused by segmentation maximumlly to reduce cathode
Hold difference.
Shown in Figure 4, the design method of the connecting line of block type electrode to pixel-driving circuit can be：Positioned at same row
Block type electrode in the same side outconnector, as shown in figure 4, the connecting line of the 1st row block type electrode to pixel-driving circuit is equal
It is arranged on the right side of the 1st row block type electrode.
Further, the lead direction and remainder of the connecting line of block type electrode partly arranged in multiple row block type electrode
The lead direction of the connecting line of the block type electrode of row is on the contrary, for example the connecting line of multiple row block type electrode can be with OLED display panel
In center line symmetrically from the opposite side of block type electrode draw, certainly in other embodiments can not also be symmetrical.As shown in figure 4,
The connecting line of block type electrode to the pixel-driving circuit of 1st row and the 2nd row is arranged at the right side of the row block type electrode, the 3rd row
The left side of the row block type electrode is arranged at the connecting line of block type electrode to the pixel-driving circuit of the 4th row, can be made in this way
The left and right side frame of OLED display panel is symmetrical.
It should be noted that Fig. 4 only shows the situation by taking 4 row block type electrodes as an example, in actual design, OLED display surfaces
The width of the block type electrode, the then connecting line of each block type electrode to pixel-driving circuit of more multiple row and more multirow can be included in plate
Degree meets to be gradually changed according to behavior unit, and the block type electrode of each row is symmetrical i.e. with the center line of OLED display panel
It can.
In one embodiment of this invention, in the display stage, pixel-driving circuit is provided by connecting line to block type electrode
Reference voltage, and pixel-driving circuit is electric to the identical reference of numerical value is provided in the block type electrode with a line by connecting line
Pressure provides numerical value different reference voltages in the block type electrode do not gone together.The present embodiment passes through to the bulk electricity after segmentation
Pole is using other power supply mode is grouped, and without being to provide same reference voltage, is provided according to the difference of far and near end block type electrode
Different reference voltages, by compensate during display pixel-driving circuit be output to block type electrode voltage value it is the same,
Voltage loss difference caused by connecting line resistance difference after compensation segmentation, after solving cathode segmentation shown in Fig. 2, because of distance
Hold the voltage difference of block type electrode is inconsistent to lead to the non-uniform problem of display image quality, specific driving method is referring to subsequent embodiment
Introduction.
During OLED device display each due to the display stage, the first supply voltage of the first power supply ELVDD is applied to OLED
Anode, the second source voltage (i.e. reference voltage) of second source ELVSS is applied to the cathode of OLED, the first supply voltage with
Reference voltage forms voltage difference at the both ends of OLED device, flows through the electric current of OLED device so as to generate to drive the OLED device
It shines.Since the first power supply ELVDD voltages that the anode of OLED is applied in actual circuit can generate pressure drop, that is, with
The voltage of one power supply ELVDD inputs is different, and the pressure drop of distance end OLED is had differences due to the distance apart from driving circuit,
Therefore the embodiment of the present invention is input to OLED cathodes by corresponding to adjustment according to the pressure drop of the first power supply of OLED anode taps ELVDD
Second source ELVSS can solve the problems, such as that OLED display panel shows that picture is non-uniform.
It should be noted that the OLED display panel in the present embodiment is in addition to that can be that OLED touch-controls shown in Fig. 2 are shown
Other than panel, the voltage-controlled display panels of OLED or oled light sense display panel can also be, i.e., respectively by pressure sensitivity function and light sensation work(
It can be integrated into the cathode of OLED, principle and structure are similar with Fig. 1 and above-described embodiment, and details are not described herein.
The OLED display panel that some embodiments of the disclosure provide, on the one hand, poor by being used to multiple block type electrodes
Alienation designs, and the area of distal end block type electrode is big, and arrives the connection line width of pixel-driving circuit；And the area of proximal end block type electrode
Small, the connecting line to pixel-driving circuit is narrow, so as to maximumlly to reduce cathode far and near end difference caused by segmentation, make remote
Block type electrode is held to the resistance of the connecting line of pixel-driving circuit and proximal end block type electrode to the connecting line of pixel-driving circuit
Resistance approaches；On the other hand, in the display stage, it is electric that according to capable distribution multiple block type electrodes are provided with different reference respectively
Pressure, by compensate during display pixel-driving circuit be output to block type electrode voltage value it is the same, compensation divide after connect
Voltage loss difference caused by wiring impedance difference, after solving cathode segmentation, because the voltage difference of far and near end block type electrode differs
Cause leads to the non-uniform problem of display image quality.
Another embodiment of the present invention also provides a kind of driving method of OLED display panel, for providing above-described embodiment
The driving of OLED display panel controlled, have with conventional drive method to the identical reference voltage of each block type electrode offer
Institute is different, which is：In the display stage, arranged according to capable distribution is multiple into second electrode respectively in matrix form
Block type electrode different reference voltage is provided, the wherein second electrode can be cathode.
Fig. 5 shows the flow chart of the driving method of above-mentioned OLED display panel, and the driving method of OLED is introduced.
As shown in figure 5, in step s 51, receive picture to be shown.
As shown in figure 5, in step S52, data look-up table is obtained.Due to being directed to each OLED display panel, can all lead to
Cross the data such as manufacture test record OLED display panel resistance difference (i.e. resistance difference) proximally and distally, voltage drop, shape
Into a database, i.e. data look-up table, therefore record in data look-up table OLED display panel distal end block type electrode and near
Hold resistance and the voltage drop of block type electrode.
As shown in figure 5, in step S53, according to the mapping of picture to be shown and data look-up table, obtain and picture to be shown
The reference voltage of the corresponding block type electrode in face each region.The reference electricity provided to the block type electrode close to pixel-driving circuit
The numerical value of pressure is more than the numerical value of the reference voltage provided to the block type electrode far from pixel-driving circuit.
As shown in figure 5, in step S54, respectively according to distal end block type electrode and the corresponding reference of proximal end block type electrode
Voltage carries out data processing, i.e., provides different reference voltages to distal end block type electrode and proximal end block type electrode respectively, and grouping is defeated
Go out to be directed to the display data of each row block type electrode.
As shown in figure 5, in step S55, by data line by display data transmissions to corresponding block type electrode, to realize
To cathode, each block type electrode carries out differentiation compensation so that pixel-driving circuit is output to the voltage of block type electrode during display
Value is the same.
Fig. 6 shows to provide the schematic diagram of reference voltage to block type electrodes multiple shown in Fig. 4, as shown in fig. 6, to the 1st row block
Shape electrode provides the voltage ELVSS1 that second source provides, and the voltage of second source offer is provided to the 2nd row block type electrode
ELVSS2 provides the voltage ELVSS3 of second source offer to the 1st row block type electrode, i.e., provides difference respectively according to capable distribution
Second source voltage (i.e. reference voltage).
Fig. 7 shows the second electricity that step S54 is provided respectively to distal end block type electrode and proximal end block type electrode in the present embodiment
The oscillogram of source voltage (i.e. reference voltage), still for touch function is integrated into cathode, as shown in fig. 7, wherein EN is
Enable signal, when OLED display panel shows each frame, including display stage T1 and touch-control stage T2, specifically：When EN is
During high level, OLED display panel is in the display stage；When EN is low level, OLED display panel is in the touch-control stage.
As shown in fig. 7, in the touch-control stage, touch scanning signals are inputted to the cathode of OLED display panel shown in Fig. 2, it is real
Now position of touch is determined.
As shown in fig. 7, in the display stage, the first power supply ELVDD inputs electricity to the anode of OLED display panel shown in Fig. 2
Pressure, second source ELVSS is to cathode input voltage, as shown in fig. 7, to the 1st row block type electrode (i.e. distal end block type electrode), the 2nd
Row block type electrode and the 3rd row block type electrode (i.e. proximal end block type electrode) output second source ELVSS provide voltage be respectively
The voltage value that ELVSS1, ELVSS2 and ELVSS3, i.e. second source are provided is sequentially increased, and is hindered with connecting line line after dividing to cathode
Voltage loss difference caused by robust is different compensates so that display panel reaches homogenization display, solves because of far and near terminal impedance
The display non-uniform problem of picture caused by difference can also further extend the service life of OLED display panel.
The driving method for the OLED display panel that some embodiments of the disclosure provide, in the display stage, according to capable point
Cloth provides multiple block type electrodes different reference voltages respectively, is exported by compensating the pixel-driving circuit during display
Voltage value to block type electrode is the same, voltage loss difference caused by connecting line resistance difference after compensation segmentation, to solve cathode
After segmentation, lead to the non-uniform problem of display image quality because the voltage difference of far and near end block type electrode is inconsistent.
The embodiment of the present invention also provides a kind of display device, including the OLED display panel in above-described embodiment, have with
Previous embodiment identical structure and advantageous effect.Since previous embodiment is to the structure of OLED display panel and beneficial to effect
Fruit is described in detail, and details are not described herein again.
It should be noted that it should be noted that the display device can be：Display panel, Electronic Paper, mobile phone, tablet
Any product or component with display function such as computer, television set, display, laptop, Digital Frame, navigator.
It will be clearly understood that the present disclosure describes how to be formed and using particular example, but the principle of the disclosure is not limited to
These exemplary any details.On the contrary, the introduction based on disclosure disclosure, these principles can be applied to many other
Embodiment.
It is particularly shown and described the illustrative embodiments of the disclosure above.It should be appreciated that the disclosure is unlimited
In detailed construction described herein, set-up mode or implementation method；On the contrary, disclosure intention covers included in appended claims
Spirit and scope in various modifications and equivalence setting.
Claims (10)
1. a kind of Organic Light Emitting Diode OLED display panel, which is characterized in that including：
First electrode layer；
The second electrode lay；
Luminescent layer between the first electrode layer and the second electrode lay；And
The pixel-driving circuit being electrically connected with the second electrode lay；
Wherein described the second electrode lay includes multiple block type electrodes in matrix form arrangement, and close to the pixel-driving circuit
The block type electrode area be less than far from the pixel-driving circuit the block type electrode area.
2. OLED display panel according to claim 1, which is characterized in that further include：
Connecting line, for connecting the block type electrode and the pixel-driving circuit, and close to the institute of the pixel-driving circuit
The width for stating the connecting line between block type electrode and the pixel-driving circuit is less than the described of the separate pixel-driving circuit
The width of connecting line between block type electrode and the pixel-driving circuit.
3. OLED display panel according to claim 2, which is characterized in that the multiple block type electrode is according to the picture
The distance of plain driving circuit is arranged line by line from small to large, and in the block type electrode with a line to the pixel driver
The connecting line length and width of circuit is identical.
4. OLED display panel according to claim 2, which is characterized in that the pixel-driving circuit passes through the connection
Line provides numerical value identical reference voltage in the block type electrode with a line.
5. OLED display panel according to claim 2, which is characterized in that the pixel-driving circuit is to close to the picture
The numerical value for the reference voltage that the block type electrode of plain driving circuit provides is more than to far from described in the pixel-driving circuit
The numerical value for the reference voltage that block type electrode provides.
6. OLED display panel according to claim 2, which is characterized in that the block type electrode positioned at same row is same
Draw the connecting line in side.
7. OLED display panel according to claim 6, which is characterized in that the institute partly arranged in block type electrode described in multiple row
It states the lead direction of the connecting line of block type electrode and the lead direction of the connecting line of the block type electrode that remainder arranges is opposite.
8. a kind of display device, which is characterized in that including using OLED display panel according to any one of claims 1 to 7.
9. a kind of driving method of Organic Light Emitting Diode OLED display panel, for described in any one of claim 1~7
The driving of OLED display panel controlled, which is characterized in that including：
In the display stage, according to capable distribution, multiple block type electrodes in matrix form arrangement into second electrode provide not respectively
Same reference voltage.
10. the driving method of OLED display panel according to claim 9, which is characterized in that distinguish according to capable distribution
Into second electrode, multiple block type electrodes in matrix form arrangement provide different reference voltages and include：
The data look-up table of the OLED display panel is obtained, wherein recording the OLED display panel in the data look-up table
The resistance and voltage drop of distal end block type electrode and proximal end block type electrode；
According to the mapping of picture to be shown and the data look-up table, obtain corresponding with described picture each region to be shown
The reference voltage of block type electrode, wherein the numerical value of reference voltage provided to the block type electrode close to pixel-driving circuit is big
In the numerical value of the reference voltage provided to the block type electrode far from the pixel-driving circuit.
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