CN104064144B - A kind of display control circuit of display panel, display device and display control method - Google Patents
A kind of display control circuit of display panel, display device and display control method Download PDFInfo
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- CN104064144B CN104064144B CN201410265018.4A CN201410265018A CN104064144B CN 104064144 B CN104064144 B CN 104064144B CN 201410265018 A CN201410265018 A CN 201410265018A CN 104064144 B CN104064144 B CN 104064144B
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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]
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Abstract
Embodiments provide the display control method of a kind of display control circuit of display panel, display device and display device, during to solve the display mode adopting existing display panel, because refresh rate is lower, be easy to the problem causing visual fatigue.Display panel in the display control circuit of the display panel that the embodiment of the present invention provides comprises pixel cell and the data line of the arrangement in matrix, wherein, each row pixel cell connects a different data line, and display control circuit comprises data transmission unit, controllable switch unit and control module; At least one data line connects described data transmission unit by controllable switch unit, and a controllable switch unit only connects a data line; Described control module, switches between conducting and shutoff for controlling each controllable switch unit; Described data transmission unit, for exporting the data of the image that this pixel cell needs show by data line or by controllable switch unit and data line to each pixel cell.
Description
Technical field
The present invention relates to display technique field, particularly relate to the display control method of a kind of display control circuit of display panel, display device and display device.
Background technology
In current Organic Light Emitting Diode (OLED, OrganicLightEmittingDiode) display driver mode, mainly OLED pixel is made to keep identical brightness degree in a frame time by the mode of memory capacitance.OLED display panel, when showing, needs to light line by line, and this kind of display mode is easy to because refresh rate (number of times be refreshed per second of the picture on screen) is lower make human eye produce visual fatigue.
When OLED display panel needs to show the picture shown in Fig. 1, its DISPLAY ORDER as shown in Figure 2, light simultaneously by the first row pixel cell time first in display panel; Then the second row pixel cell in display panel is lighted simultaneously, and now, the first row pixel cell in display panel still maintainings lights state; Then the third line pixel cell in display panel is lighted simultaneously, and now, the first row pixel cell in display panel and the second row pixel cell still maintaining lights.
If the frame rate of OLED display panel is 24Hz, namely 24 frames are shown in 1 second, if so total capable pixel cell of m in OLED display panel, so, picture in this OLED display panel refreshes 24*m time p.s., and because picture refreshing frequency p.s. on display panel is more, image is more stable, image display nature is clear, also less on the impact of eyes.And picture refreshing frequency p.s. on display panel is fewer, image flicker and shake more severe, eye fatigue must be faster.Therefore, the display mode shown in Fig. 2, because the refreshing frequency of the picture p.s. on display panel is less, namely refresh rate is lower, is easy to cause visual fatigue.
In sum, when adopting the display mode of the display panel of existing Organic Light Emitting Diode, because refresh rate is lower, be easy to cause visual fatigue.
Summary of the invention
Embodiments providing the display control method of a kind of display control circuit of display panel, display device and display device, during for solving the display mode adopting existing display panel, because refresh rate is lower, being easy to the problem causing visual fatigue.
Based on the problems referred to above, the display control circuit of a kind of display panel that the embodiment of the present invention provides, described display panel comprises pixel cell and the data line of the arrangement in matrix, wherein, each row pixel cell connects a different data line, and described display control circuit comprises data transmission unit, controllable switch unit and control module;
At least one data line connects described data transmission unit by described controllable switch unit, and a controllable switch unit only connects a data line;
Described control module, switches between conducting and shutoff for controlling described controllable switch unit;
Described data transmission unit, for exporting the data of the image that this pixel cell needs show by described data line or by described controllable switch unit and described data line to each pixel cell.
A kind of display device that the embodiment of the present invention provides, comprises the display control circuit of the display panel that the embodiment of the present invention provides, display panel and scanning element; Every a line pixel cell in described display panel connects a different gate line;
Described scanning element, for controlling the order gating of each bar gate line according to setting, the data that can receive described data transmission unit to make the pixel cell be connected with this gate line and export.
The display control method of the display device that the embodiment of the present invention provides, comprising:
For a gate line in each bar gate line on the display panel in described display device, determine that this gate line is strobed;
If there is the data line directly connecting described data transmission unit in described display device, then within the time period that this gate line is strobed, control at least one controllable switch unit and start conducting at predetermined time, described predetermined time is the moment from the initial time that this gate line is strobed after preset duration;
If there is not the data line directly connecting described data transmission unit in described display device, then within the time period that this gate line is strobed, control each controllable switch unit different time conducting.
The beneficial effect of the embodiment of the present invention comprises:
The display control circuit of a kind of display panel that the embodiment of the present invention provides, the display control method of display device and display device, because data transmission unit needs to export the data of the image that these pixel cell needs show by controllable switch unit and data line to pixel cell, therefore, when the gate line that same a line pixel cell connects is strobed, if there is the data line of direct connection data transmission unit in this display device, then can control at least one controllable switch unit and start conducting at predetermined time, predetermined time is the moment from the initial time that this gate line is strobed after preset duration, with the data making this row pixel cell can not receive data transmission unit transmission simultaneously, if there is not the data line of direct connection data transmission unit in this display device, then conducting when can pass through to control each controllable switch unit difference, with the data making this row pixel cell can not receive data transmission unit transmission simultaneously, thus the pixel cell of same a line can not be lighted simultaneously, and then improve the refresh rate of the picture on display panel, reduce visual fatigue.
Accompanying drawing explanation
Fig. 1 is image to be shown on display panel;
When Fig. 2 is for employing existing display mode, the schematic diagram of the DISPLAY ORDER of the image to be shown shown in Fig. 1;
One of structural representation of the display control circuit of the display panel that Fig. 3 a provides for the embodiment of the present invention;
The structural representation two of the display control circuit of the display panel that Fig. 3 b provides for the embodiment of the present invention;
The structural representation three of the display control circuit of the display panel that Fig. 4 provides for the embodiment of the present invention;
One of structural representation of the display device that Fig. 5 a provides for the embodiment of the present invention;
The structural representation two of the display device that Fig. 5 b provides for the embodiment of the present invention;
The structural representation of a kind of pixel cell that Fig. 6 provides for the embodiment of the present invention;
One of process flow diagram of the display control method of the display device that Fig. 7 provides for the embodiment of the present invention;
The process flow diagram two of the display control method of the display device that Fig. 8 provides for the embodiment of the present invention;
Image to be shown in the display device that Fig. 9 provides for the embodiment of the present invention;
When Figure 10 is for adopting the display control method of the display device that provides of the embodiment of the present invention, the schematic diagram of the DISPLAY ORDER of the image shown in Fig. 9;
The schematic diagram of the signal that the control module in the display device that Figure 11 provides for the embodiment of the present invention exports;
The process flow diagram three of the display control method of the display device that Figure 12 provides for the embodiment of the present invention.
Embodiment
The display control method of the display control circuit of a kind of display panel that the embodiment of the present invention provides, display device and display device, when the gate line that same a line pixel cell connects is strobed, can by controlling each controllable switch unit, make this row pixel cell all can not receive the data of data transmission unit transmission simultaneously, thus the pixel cell of same a line can not be lighted simultaneously, and then improve the refresh rate of the picture on display panel.
Below in conjunction with Figure of description, the embodiment of the display control method of the display control circuit of a kind of display panel that the embodiment of the present invention provides, display device and display device is described.
The display control circuit of a kind of display panel that the embodiment of the present invention provides, as shown in Figure 3 a, wherein, display panel 31 comprises pixel cell 32 and the data line 33 of the arrangement in matrix, wherein, each row pixel cell connects a different data line, and this display control circuit comprises data transmission unit 34, controllable switch unit 35 and control module 36;
At least one data line 33 is by described controllable switch unit 35 connection data transmission unit 34, and a controllable switch unit 35 only connects a data line 33;
Control module 36, switches between conducting and shutoff for controlling each controllable switch unit 35;
Data transmission unit 34, for exporting the data of the image that this pixel cell needs show by data line 33 or by controllable switch unit 35 and data line 33 to each pixel cell.
Wherein, data transmission unit 34, controllable switch unit 35 and control module 36 can be positioned on display panel 31, also can be positioned at outside display panel 31.Be positioned at beyond display panel 31 for data transmission unit 34, controllable switch unit 35 and control module 36 in Fig. 3 and be described.
Alternatively, as shown in Figure 3 b, every bar data line 33 is all by controllable switch unit 35 connection data transmission unit 34, and namely every bar data line 33 passes through.Display panel 31, pixel cell 32 and control module 36 is also comprised in Fig. 3 b.
Only all be described by controllable switch unit connection data transmission unit for every bar data line below, the structure that there is display panel during the data line of direct connection data transmission unit in display panel with, every bar data line all by the similar of display panel during controllable switch unit connection data transmission unit, does not repeat them here.
Alternatively, as shown in Figure 4, each controllable switch unit comprises a thin film transistor (TFT) (TFT, ThinFilmTransistor); The drain electrode of the source electrode connection data transmission unit 34, this TFTT of each TFTT connects the grid connection control unit 36 of the data line 33, this TFTT that the controllable switch unit that comprises this TFTT connects.Fig. 4 is all described by controllable switch unit 35 connection data transmission unit 34 for every bar data line 33.
TFT in each controllable switch unit can be p-type TFT, can be also N-shaped TFT, be described in Fig. 4 for N-shaped TFT.
Certainly, each controllable switch unit can also comprise multiple TFT, and the grid of this multiple TFT links together, and connection control unit, multiple TFT series/parallel is together.
The display device that the embodiment of the present invention provides, as shown in Figure 5 a, comprises the display control circuit of the display panel that the embodiment of the present invention provides, display panel 31 and scanning element 51; Every a line pixel cell in display panel 31 connects a different gate line 52;
Scanning element 51, for controlling the order gating of each bar gate line 52 according to setting, the data that can receive data transmission unit 34 to make the pixel cell be connected with this gate line 52 and export.
If controllable switch unit comprises TFT, then the display device that provides of the embodiment of the present invention as shown in Figure 5 b.
Wherein, the pixel cell in the display device that provides of the embodiment of the present invention can adopt the structure shown in Fig. 6.In figure 6, the grid of the first transistor T1 receives sweep signal Scan, the source electrode of the first transistor T1 receives data-signal Data, the drain electrode of the first transistor T1 connects the grid of transistor seconds T2, the source electrode of transistor seconds T2 and the source electrode of third transistor T3 all receive high level signal Vdd, the grid of third transistor T3 connects the drain electrode of transistor seconds T2, the drain electrode of third transistor T3 is connected with the anode of OLED OLED, the plus earth of Organic Light Emitting Diode OLED, one end of first electric capacity connects the grid of third transistor T3, the other end ground connection of the first electric capacity C1, the source electrode of the 4th transistor T4 connects the grid of third transistor T3, the grid of the 4th transistor T4 receives reset signal Reset, the grounded drain of the 4th transistor T4.
Wherein, the sweep signal Scan that the grid of the first transistor T1 receives is identical with the signal on the gate line that this pixel cell connects, therefore, when the gate line that this pixel cell connects is strobed, the first transistor T1 conducting, the data-signal Data that the source electrode of the first transistor T1 receives is transferred to the grid of transistor seconds T2, and data-signal Data is the signal on the data line that connects of this pixel cell; Transistor seconds T2 is source follower, i.e. a voltage follower, and the Main Function of transistor seconds T2 is power amplification; Signal on last article of gate line of grid the reset signal Reset received and the gate line that this pixel cell connects of the 4th transistor T4 is identical, like this in kth frame picture, need to the capable data charging of l, and l+1 capable be still now k-1 frame data, the 4th transistor T4 conducting is controlled by reset signal reset, thus give the capacitor discharge in the pixel cell that l+1 is capable, Organic Light Emitting Diode OLED is shown normal.
Certainly, the pixel cell in the display device that provides of the embodiment of the present invention also can adopt other structure.
Every bar data line is only gived all by the structure of display device during controllable switch unit connection data transmission unit in Fig. 5 a and Fig. 5 b, certainly, the situation of the data line of direct connection data transmission unit can also be there is in the display device that the embodiment of the present invention provides.
The display control method of the display device that the embodiment of the present invention provides, as shown in Figure 7, comprising:
S701, for a gate line in each bar gate line on the display panel in display device, determine that this gate line is strobed;
If there is the data line of direct connection data transmission unit in this display device of S702, then within the time period that this gate line is strobed, control at least one controllable switch unit and start conducting at predetermined time, predetermined time is the moment from the initial time that this gate line is strobed after preset duration;
If there is not the data line of direct connection data transmission unit in this display device of S703, namely the pieces of data line in display device is all by controllable switch unit connection data transmission unit, then within the time period that this gate line is strobed, control each controllable switch unit different time conducting.
Wherein, the sequencing on S702 and S703 has no time when performing, concrete perform in S702 and S703 which to see that the structure of display device meets any condition.
When only there being a data line by controllable switch unit connection data transmission unit in display device, so the structure of display device only meets in display device the condition of the data line that there is direct connection data transmission unit, therefore, perform S702.When having the data line of more than two in display device by controllable switch unit connection data transmission unit, and when there is the data line of direct connection data transmission unit in display device, so the structure of display device not only meets in display device the condition of the data line that there is direct connection data transmission unit, and meet in display device the condition having at least two data lines by controllable switch unit connection data transmission unit, therefore, S702 can be performed, also S703 can be performed, S702 can also be performed to a part of controllable switch unit, S703 is performed to another part controllable switch unit.
Such as, when only there being a data line by controllable switch unit connection data transmission unit in display device, if within the time period of (t1, t2), the gate line that certain a line pixel cell connects is strobed, so, the controllable switch unit that can control the connection of this data line starts conducting at predetermined time t3, wherein, and t3>t1, t3<t2, preset duration is t3-t1.Like this, the refresh rate of the picture on display panel is doubled compared to the refresh rate of picture during the existing display mode of employing, it reduces visual fatigue.
Such as, when having at least two data lines in display device by controllable switch unit connection data transmission unit, and when there is the data line of direct connection data transmission unit in display device, if at (t1, t2) in time period, the gate line that certain a line pixel cell connects is strobed, so, each controllable switch unit that can control in display device all starts conducting at predetermined time t3, wherein, t3>t1, t3<t2, preset duration is t3-t1, that is, control these controllable switch unit and start conducting simultaneously, at least one controllable switch unit that also can control in display device all starts conducting at predetermined time t3, and other controllable switch unit controlled in display device is at (t1, t2) other moment in time period starts conducting, that is, conducting when control controllable switch unit is different.These two kinds of control methods can both improve the refresh rate of the picture on display panel, thus reduce visual fatigue.
When the every bar data line in display device is all by controllable switch unit connection data transmission unit, when namely there is not the data line of direct connection data transmission unit in display device, so the structure of display device meets in display device the condition having at least two data lines by controllable switch unit connection data transmission unit, therefore, S703 be performed.
Such as, when bar data line every in display device is all by controllable switch unit connection data transmission unit, suppose display panel there is 2n row pixel cell, if at (t1, t2) in time period, the gate line that certain a line pixel cell connects is strobed, control module can control the 1st in this row to n pixel cell at (t1, (t1+t2) data of data transmission unit transmission are received in the time period/2), control (n+1)th in this row to 2n pixel cell in ((t1+t2)/2, t2) data of data transmission unit transmission are received in time period, thus make the 1st in this row start to light from the t1 moment to n pixel cell, in this row (n+1)th to 2n pixel cell is made to start to light from the moment of (t1+t2)/2, like this, if by the capable pixel cell of m on display panel, the refresh rate of the picture so on display panel is doubled compared to the refresh rate of picture during the existing display mode of employing, it reduce visual fatigue.
Preferably, as shown in Figure 8, within the time period that this gate line is strobed, control each controllable switch unit different time conducting specifically comprise: S801, within the time period that this gate line is strobed, control each controllable switch unit conducting successively according to the order of setting.
Such as, suppose display panel there is 2n row pixel cell, if at (t1, t2) in time period, the gate line that certain a line pixel cell connects is strobed, control module can control the 1st pixel cell in this row at (t1, t1+ (t2-t1)/2n) time period in receive data transmission unit transmission data, control p pixel cell in this row at (t1+ (p-1) (t2-t1)/2n, t1+p* (t2-t1)/2n) time period in receive data transmission unit transmission data, wherein, p is more than or equal to 1, and be less than or equal to 2n, thus make p pixel cell in this row start to light from t1+ (p-1) (t2-t1)/2n moment, like this, if by the capable pixel cell of m on display panel, the 2n of the refresh rate of the picture when refresh rate of the picture so on display panel is employing existing display mode doubly, it reduces visual fatigue.
Suppose to need in display panel to show the picture shown in Fig. 9, when so adopting the display display control method shown in Fig. 8, device DISPLAY ORDER as shown in Figure 10.
If controllable switch unit comprises p-type TFT, display panel then in embodiment of the present invention display device there is n bar data line, then control module can export the signal shown in Figure 11, with control TFT conducting, wherein P1 is the signal that the grid of TFT that Article 1 data line connects receives, P2 is the signal that the grid of the TFT that Article 2 data line connects receives, P3 is the signal that the grid of the TFT that Article 3 data line connects receives, Pn-1 is the signal that the grid of the TFT that (n-1)th data line connects receives, Pn is the signal that the grid of the TFT that n-th data line connects receives.
Preferably, the display control method of the display device that the embodiment of the present invention provides, as shown in figure 12, also comprises:
S1201, determine in this display device display panel on each bar gate line be not all strobed;
S1202, control each controllable switch unit turn off.
That is, when showing when display device is not opened, control each controllable switch unit and turn off, if controllable switch unit comprises p-type TFT, namely to the grid output low level signal of each TFT.
The display control method of the display device that the embodiment of the present invention provides, exactly by charging separately only to a pixel cell a moment, such as, first charge to the pixel cell of the first row, the first moment charged to first of the first row pixel cell, and the second moment charged to second of the first row pixel cell, after the pixel cell charging of the first row terminates, then charge to the pixel cell of the second row, by that analogy until give last pixel cell charging complete of last column.
Through the above description of the embodiments, those skilled in the art can be well understood to the embodiment of the present invention can by hardware implementing, and the mode that also can add necessary general hardware platform by software realizes.Based on such understanding, the technical scheme of the embodiment of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions and perform method described in each embodiment of the present invention in order to make a computer equipment (can be personal computer, server, or the network equipment etc.).
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device in embodiment can carry out being distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices being different from the present embodiment.The module of above-described embodiment can merge into a module, also can split into multiple submodule further.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (7)
1. the display control circuit of a display panel, described display panel comprises pixel cell and the data line of the arrangement in matrix, wherein, each row pixel cell connects a different data line, it is characterized in that, described display control circuit comprises data transmission unit, controllable switch unit and control module;
At least one data line connects described data transmission unit by described controllable switch unit, and a controllable switch unit only connects a data line;
Described control module, switches between conducting and shutoff for controlling described controllable switch unit; And every bar data line is when all connecting described data transmission unit by described controllable switch unit, control each described controllable switch unit different time conducting;
Described data transmission unit, for exporting the data of the image that this pixel cell needs show by described data line or by described controllable switch unit and described data line to each pixel cell.
2. circuit as claimed in claim 1, it is characterized in that, every bar data line all connects described data transmission unit by described controllable switch unit.
3. circuit as claimed in claim 1, it is characterized in that, each described controllable switch unit comprises a thin film transistor (TFT);
The source electrode of each thin film transistor (TFT) connects described data transmission unit, and the drain electrode of this thin film transistor (TFT) connects the data line that the controllable switch unit that comprises this thin film transistor (TFT) connects, and the grid of this thin film transistor (TFT) connects described control module.
4. a display device, is characterized in that, comprises the display control circuit of the arbitrary described display panel of claims 1 to 3, display panel and scanning element; Every a line pixel cell in described display panel connects a different gate line;
Described scanning element, for controlling the order gating of each bar gate line according to setting, the data that can receive described data transmission unit to make the pixel cell be connected with this gate line and export.
5. a display control method for display device as claimed in claim 4, is characterized in that, comprising:
For a gate line in each bar gate line on the display panel in described display device, determine that this gate line is strobed;
If there is the data line directly connecting described data transmission unit in described display device, then within the time period that this gate line is strobed, control at least one controllable switch unit and start conducting at predetermined time, described predetermined time is the moment from the initial time that this gate line is strobed after preset duration;
If there is not the data line directly connecting described data transmission unit in described display device, then within the time period that this gate line is strobed, control each controllable switch unit different time conducting.
6. method as claimed in claim 5, is characterized in that, within the time period that this gate line is strobed, control each controllable switch unit different time conducting, specifically comprise:
Within the time period that this gate line is strobed, control each controllable switch unit conducting successively according to the order of setting.
7. method as claimed in claim 5, it is characterized in that, described method also comprises:
Determine that each bar gate line on the display panel in described display device is not all strobed;
Control each controllable switch unit to turn off.
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| CN201410265018.4A CN104064144B (en) | 2014-06-13 | 2014-06-13 | A kind of display control circuit of display panel, display device and display control method |
| PCT/CN2014/087926 WO2015188531A1 (en) | 2014-06-13 | 2014-09-30 | Display control circuit of display panel, display device and display control method therefor |
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| CN201410265018.4A CN104064144B (en) | 2014-06-13 | 2014-06-13 | A kind of display control circuit of display panel, display device and display control method |
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| CN104064144B (en) * | 2014-06-13 | 2016-03-09 | 北京京东方视讯科技有限公司 | A kind of display control circuit of display panel, display device and display control method |
| CN108986749B (en) * | 2017-06-05 | 2020-07-10 | 京东方科技集团股份有限公司 | Pixel unit, driving method, display panel, display method and display device |
| CN107633813B (en) * | 2017-09-15 | 2019-08-27 | 上海天马有机发光显示技术有限公司 | A kind of electroluminescence display panel, its driving method and display device |
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| WO2015188531A1 (en) | 2015-12-17 |
| CN104064144A (en) | 2014-09-24 |
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