CN109830212A - A kind of OLED display panel - Google Patents
A kind of OLED display panel Download PDFInfo
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- CN109830212A CN109830212A CN201910196276.4A CN201910196276A CN109830212A CN 109830212 A CN109830212 A CN 109830212A CN 201910196276 A CN201910196276 A CN 201910196276A CN 109830212 A CN109830212 A CN 109830212A
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- film transistor
- tft
- thin film
- display panel
- oled display
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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]
- 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]
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
-
- 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 application provides a kind of OLED display panel, the pixel unit including data line, scan line and array distribution, and a pixel unit includes red sub-pixel, green sub-pixels, blue subpixels.Each sub-pixel includes first film transistor, the second thin film transistor (TFT), third thin film transistor (TFT)；Wherein, one of the second thin film transistor (TFT) and third thin film transistor (TFT) are P-type TFT, and another one is N-type TFT, for driving sub-pixel for emitting light.Data line alternate transport positive voltage data-signal and negative voltage data signal, so that the second thin film transistor (TFT) and third thin film transistor (TFT) are alternately in an open state in one, another one is in off state, the phenomenon that improvement threshold variation.
Description
Technical field
This application involves field of display technology more particularly to a kind of OLED display panels.
Background technique
Traditional OLED pixel structure is controlled the electric current for flowing through OLED using single thin film transistor (TFT) (TFT), referred to as " driven
Dynamic pipe ".Because it is not ideal enough that the unstability of luminescent material and manufacturing process will lead to display effect.Common way is compensation
Method, such as optical compensation, internal compensation and external compensation.Optical compensation captures display picture by camera, is converted into
Data are corrected in the drive system by feeding back display screen after algorithm process again.External compensation is added in OLED anode
Circuit for detecting all the way is handled and then is compensated to the voltage value or current value that detect by algorithm.Internal compensation is
A series of thin film transistor (TFT) and capacitor are added, the threshold voltage (Vth) of driving tube is collected in capacitor in advance, then is fed back
It is compensated into pixel circuit.
It due to the system that optical compensation depends on camera and complex proprietary, is generally all only carried out in panel output, visitor
It family can not voluntarily optical compensation.External compensation dot structure is simple, but the detecting time of compensation model takes a long time, general only to exist
The driving tube that several rows are detected in free area between frame and frame shows situation.The detecting time of internal compensation is extremely short, can be realized reality
When compensate, but the quantity of thin film transistor (TFT) is more, influences aperture opening ratio and technology difficulty is larger.
Therefore, the prior art is defective, needs to improve.
Summary of the invention
The application provides a kind of OLED display panel, can improve the threshold for driving the thin film transistor (TFT) of sub-pixel for emitting light
Threshold voltage shift phenomenon is chronically under positive electricity compression to solve it and the phenomenon that threshold voltage continues positively biased occurs.
To solve the above problems, technical solution provided by the present application is as follows:
The application provides a kind of OLED display panel, the pixel unit including data line, scan line and array distribution, and one
The pixel unit includes red sub-pixel, green sub-pixels, blue subpixels；
The OLED display panel further includes the first power supply and second source, and each sub-pixel includes the first film crystal
Pipe, the second thin film transistor (TFT), third thin film transistor (TFT)；
The grid of the first film transistor connects the scan line, and the source electrode of the first film transistor connects institute
Data line is stated, it is thin that the drain electrode of the first film transistor is connected in parallel the grid of second thin film transistor (TFT), the third
The grid of film transistor；
The source electrode of second thin film transistor (TFT) accesses first power supply, the drain electrode access of second thin film transistor (TFT)
The second source；
The source electrode of the third thin film transistor (TFT) accesses first power supply, the drain electrode access of the third thin film transistor (TFT)
The second source；
Wherein, the data line alternately transmits positive voltage data-signal and negative voltage data signal, so that described second
Thin film transistor (TFT) and the third thin film transistor (TFT) are alternately in an open state in one, and another one is in off state, to
Improvement threshold variation.
In the OLED display panel of the application, each sub-pixel further includes storage capacitance, the storage capacitance
First pole plate is connect with the drain electrode of the first film transistor, the second pole plate access of the storage capacitance second electricity
Source.
In the OLED display panel of the application, the scanning signal and the data line that the scan line is transmitted are transmitted
The data-signal for making the sub-pixel for emitting light jointly.
In the OLED display panel of the application, the red sub-pixel, the green sub-pixels, the blue subpixels
Share a scan line.
In the OLED display panel of the application, the red sub-pixel, the green sub-pixels, the blue subpixels
Respectively correspond the data line.
In the OLED display panel of the application, second thin film transistor (TFT) is N-type TFT, and the third is thin
Film transistor is P-type TFT.
In the OLED display panel of the application, when M frame, M is positive integer, the data letter of the data line input
Number voltage when being positive voltage, second thin film transistor (TFT) is opened, and the third thin film transistor (TFT) is closed；
When M+1 frame, when the voltage of the data-signal of the data line input is negative voltage, second film is brilliant
Body pipe is closed, and the third thin film transistor (TFT) is opened.
In the OLED display panel of the application, when M frame, the voltage of the scanning signal of the scan line input is positive electricity
Pressure, the threshold voltage of second thin film transistor (TFT) are positive value.
In the OLED display panel of the application, when M+1 frame, the voltage of the scanning signal of the scan line input is positive
Voltage, the threshold voltage of the third thin film transistor (TFT) are negative value.
In the OLED display panel of the application, the threshold voltage of second thin film transistor (TFT) and the third film are brilliant
The threshold voltage of body pipe forms complementation.
The application's has the beneficial effect that compared to existing OLED display panel, OLED display panel provided by the present application,
By the way that two thin film transistor (TFT)s to drive sub-pixel for emitting light, specially N-type TFT and P are arranged in pixel circuit
Type thin film transistor (TFT) carries out collocation in parallel, and the alternating for being achieved in two thin film transistor (TFT)s cooperates, with stable threshold voltage
Offset situation promotes display effect.The application had not both needed to expend the very long detecting time as external compensation, for single
Sub-pixel, the quantity of thin film transistor (TFT) can also be controlled effectively, and overall structure is simple and practical, can largely change
The display effect of kind OLED display panel.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of embodiment or technical solution in the prior art
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only some of application
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the pixel circuit figure of OLED display panel provided by the embodiments of the present application；
The waveform diagram of pixel circuit when Fig. 2 is M frame provided by the embodiments of the present application；
The waveform diagram of pixel circuit when Fig. 3 is M+1 frame provided by the embodiments of the present application.
Specific embodiment
The explanation of following embodiment is referred to the additional illustration, the particular implementation that can be used to implement to illustrate the application
Example.The direction term that the application is previously mentioned, such as [on], [under], [preceding], [rear], [left side], [right side], [interior], [outer], [side]
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the application, rather than to
Limit the application.The similar unit of structure is with being given the same reference numerals in the figure.
The application is directed to existing OLED display panel, there is the threshold value for driving the thin film transistor (TFT) of sub-pixel for emitting light
Variation phenomenon, so that the present embodiment is able to solve the defect the technical issues of influencing display panel display effect.
As shown in Figure 1, being the pixel circuit figure of OLED display panel provided by the embodiments of the present application.The OLED display surface
Plate includes: underlay substrate, and the multiple data lines and multi-strip scanning line and array distribution that are prepared on the underlay substrate
Pixel unit.One pixel unit includes red sub-pixel R, green sub-pixels G, blue subpixels B.The OLED is shown
Panel further includes the first power supply and second source, and first power supply is for providing the first power supply high level VDD, second electricity
Source is for providing second source low level VSS.Each sub-pixel includes anode, cathode, first film transistor, the second film
Transistor, third thin film transistor (TFT) and storage capacitance.Wherein, to the single sub-pixel by taking the red sub-pixel R as an example
Pixel circuit framework be illustrated.
The red sub-pixel R includes first film transistor T11, the second thin film transistor (TFT) T12, third thin film transistor (TFT)
T13 and storage capacitance Cst1.The grid of the first film transistor T11 connects scan line Scan-R, the first film
The source electrode of transistor T11 connects data line Date-R, and it is thin that the drain electrode of the first film transistor T11 is connected in parallel described second
First pole plate of the grid of film transistor T12, the grid of the third thin film transistor (TFT) T13 and the storage capacitance Cst1.
The source electrode of the second thin film transistor (TFT) T12 accesses the first power supply high level VDD, the second thin film transistor (TFT) T12's
Drain electrode connects the anode, and accesses the second source low level VSS by the cathode.The third thin film transistor (TFT)
The source electrode of T13 accesses the first power supply high level VDD, and the drain electrode of the third thin film transistor (TFT) T13 connects the anode, and
The second source low level VSS is accessed by the cathode.The second pole plate of the storage capacitance Cst1 connects the anode,
And the second source low level VSS is accessed by the cathode.
The pixel of the green sub-pixels G, the pixel circuit framework of the blue subpixels B and the red sub-pixel R
Circuit architecture is consistent, and details are not described herein again.
For the single sub-pixel, still by taking the red sub-pixel R as an example, the first film transistor T11 is used as
Switching tube, for controlling the write-in of data-signal；The second thin film transistor (TFT) T12 and third thin film transistor (TFT) T13 is used
Make driving tube, for the size by control electric current to drive the red sub-pixel R to shine.The data line Date-R is used for
Alternate transmission positive voltage data-signal and negative voltage data signal, so that the second thin film transistor (TFT) T12 and the third
Thin film transistor (TFT) T13 is alternately in an open state in one, and another one is in off state.The green sub-pixels G with it is described
Blue subpixels B is also similarly to design, and details are not described herein again.
Wherein, the data-signal that the scanning signal and the data line that the scan line is transmitted are transmitted is for altogether
It is same to make the sub-pixel for emitting light.
Since the driving tube has a kind of characteristic, i.e. when Vgs (voltage difference of grid and source electrode) is positive value, Vth (driving
The threshold voltage of pipe) it can positively biased；And Vgs is when being negative value, Vth can negative bias.Since the write-in of the data-signal of the application uses just
Voltage mode and the alternate form of negative electricity die pressing type, can improve the threshold voltage shift of the driving tube, aobvious so as to improve OLED
The stability of photoluminescence for showing panel promotes the display effect of screen.
For the sub-pixel, the scanning voltage signal of the first film transistor input of data-signal write-in is controlled
Waveform it is consistent, therefore the red sub-pixel R, the green sub-pixels G, the blue subpixels B share one described in sweep
Line is retouched, the quantity of display panel cabling, increasing opening rate so can be substantially reduced；It is certainly not limited to this, the different sub- pictures
Element can also be independently arranged the scan line.
The red sub-pixel R, the green sub-pixels G, the blue subpixels B respectively correspond the data
Line.
For the sub-pixel, wherein second thin film transistor (TFT) is N-type TFT, the third film crystal
Pipe is that P-type TFT, or both is opposite.When the voltage of the effective data-signal of input is positive voltage, N-type film
Transistor is opened, and P-type TFT is closed；When the voltage of the effective data-signal of input is negative voltage, p-type film is brilliant
Body pipe is opened, and N-type TFT is closed.
Specifically referring to figure 2. and shown in Fig. 3, it is illustrated by taking Nth row (N is positive integer) scan line as an example.(M when M frame
For positive integer), the voltage of the scanning signal of the scan line Scan-R/G/B input is positive voltage, the data line Date-R/
The voltage of the data-signal of G/B input is positive voltage, and second thin film transistor (TFT) is opened, the third thin film transistor (TFT)
It closes, i.e., the threshold voltage of described second thin film transistor (TFT) is positive value.When M+1 frame, the scan line Scan-R/G/B input
The voltage of scanning signal be positive voltage, the voltage of the data-signal of data line Date-R/G/B input is negative electricity
Pressure, second thin film transistor (TFT) are closed, and the third thin film transistor (TFT) is opened, i.e., the threshold value electricity of the described third thin film transistor (TFT)
Pressure is negative value.Therefore, the threshold voltage of second thin film transistor (TFT) and the threshold voltage of the third thin film transistor (TFT) are formed
Complementation deviates situation with stable threshold voltage, promotes display effect.
The characteristic of each driving tube can be variant when in view of panel output, therefore when panel output early period, Ying Jin
Row optical compensation answers the voltage data signal of grayscale to calculate output phase, ultimately generates look-up table (Look-up-
Table), import in the display system of panel.The subsequent data most will directly be referred to as voltage data signal.Subsequent
The display stage inputs specific waveform, carries out picture and shows.
In conclusion OLED display panel provided by the present application, by the way that two are arranged in pixel circuit to drive son
The collocation in parallel with P-type TFT progress of the thin film transistor (TFT) of pixel light emission, specially N-type TFT, is achieved in
The alternating of two thin film transistor (TFT)s cooperates, and deviates situation with stable threshold voltage, promotes display effect.The application was both not required to
The very long detecting time is expended as external compensation, for single sub-pixel, the quantity of thin film transistor (TFT) can also be had
The control of effect, overall structure is simple and practical, can largely improve the display effect of OLED display panel.
Although above preferred embodiment is not to limit in conclusion the application is disclosed above with preferred embodiment
The application processed, those skilled in the art are not departing from spirit and scope, can make various changes and profit
Decorations, therefore the protection scope of the application subjects to the scope of the claims.
Claims (10)
1. a kind of OLED display panel, which is characterized in that the pixel unit including data line, scan line and array distribution, one
The pixel unit includes red sub-pixel, green sub-pixels, blue subpixels；
The OLED display panel further includes the first power supply and second source, each sub-pixel include first film transistor,
Second thin film transistor (TFT), third thin film transistor (TFT)；
The grid of the first film transistor connects the scan line, and the source electrode of the first film transistor connects the number
According to line, it is brilliant that the drain electrode of the first film transistor is connected in parallel the grid of second thin film transistor (TFT), the third film
The grid of body pipe；
The source electrode of second thin film transistor (TFT) accesses first power supply, described in the drain electrode access of second thin film transistor (TFT)
Second source；
The source electrode of the third thin film transistor (TFT) accesses first power supply, described in the drain electrode access of the third thin film transistor (TFT)
Second source；
Wherein, the data line alternately transmits positive voltage data-signal and negative voltage data signal, so that second film
Transistor and the third thin film transistor (TFT) are alternately in an open state in one, and another one is in off state, to improve
Threshold voltage shift.
2. OLED display panel according to claim 1, which is characterized in that each sub-pixel further includes storage electricity
Hold, the first pole plate of the storage capacitance is connect with the drain electrode of the first film transistor, the second pole of the storage capacitance
Plate accesses the second source.
3. OLED display panel according to claim 1, which is characterized in that scanning signal that the scan line is transmitted and
The data-signal that the data line is transmitted for making the sub-pixel for emitting light jointly.
4. OLED display panel according to claim 1, which is characterized in that the red sub-pixel, the sub- picture of green
Plain, the described blue subpixels share a scan line.
5. OLED display panel according to claim 1, which is characterized in that the red sub-pixel, the sub- picture of green
Plain, the described blue subpixels respectively correspond the data line.
6. OLED display panel according to claim 1, which is characterized in that second thin film transistor (TFT) is N-type film
Transistor, the third thin film transistor (TFT) are P-type TFT.
7. OLED display panel according to claim 6, which is characterized in that when M frame, M is positive integer, the data line
When the voltage of the data-signal of input is positive voltage, second thin film transistor (TFT) is opened, the third thin film transistor (TFT)
It closes；
When M+1 frame, when the voltage of the data-signal of the data line input is negative voltage, second thin film transistor (TFT)
It closes, the third thin film transistor (TFT) is opened.
8. OLED display panel according to claim 7, which is characterized in that when M frame, the scanning of the scan line input
The voltage of signal is positive voltage, and the threshold voltage of second thin film transistor (TFT) is positive value.
9. OLED display panel according to claim 7, which is characterized in that when M+1 frame, the scan line input is swept
The voltage for retouching signal is positive voltage, and the threshold voltage of the third thin film transistor (TFT) is negative value.
10. OLED display panel according to claim 8 or claim 9, which is characterized in that the threshold value of second thin film transistor (TFT)
Voltage forms complementary with the threshold voltage of the third thin film transistor (TFT).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910196276.4A CN109830212A (en) | 2019-03-15 | 2019-03-15 | A kind of OLED display panel |
| PCT/CN2019/082147 WO2020186578A1 (en) | 2019-03-15 | 2019-04-10 | Oled display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910196276.4A CN109830212A (en) | 2019-03-15 | 2019-03-15 | A kind of OLED display panel |
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| Publication Number | Publication Date |
|---|---|
| CN109830212A true CN109830212A (en) | 2019-05-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910196276.4A Pending CN109830212A (en) | 2019-03-15 | 2019-03-15 | A kind of OLED display panel |
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| Country | Link |
|---|---|
| CN (1) | CN109830212A (en) |
| WO (1) | WO2020186578A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110930943A (en) * | 2019-12-02 | 2020-03-27 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and display panel |
| CN114217895A (en) * | 2021-12-07 | 2022-03-22 | 惠州视维新技术有限公司 | Picture display method and device, electronic equipment and computer readable storage medium |
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