CN105702211B - The driving method of image element circuit and image element circuit, display device - Google Patents
The driving method of image element circuit and image element circuit, display device Download PDFInfo
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- CN105702211B CN105702211B CN201610284988.8A CN201610284988A CN105702211B CN 105702211 B CN105702211 B CN 105702211B CN 201610284988 A CN201610284988 A CN 201610284988A CN 105702211 B CN105702211 B CN 105702211B
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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
- G09G3/3241—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element the current through the light-emitting element being set using a data current provided by the data driver, e.g. by using a two-transistor current mirror
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention belongs to display technology field, and in particular to a kind of driving method of image element circuit and image element circuit, display device.The image element circuit includes writing module, reseting module, drive module and light emitting module, wherein：Said write module, it is connected with scanning signal, data-signal and the drive module, for for the drive module input image data；The reseting module, it is connected with reset signal, data-signal, initial voltage and the drive module, data-signal is write for resetting the drive module, and to drive module；The drive module, it is connected with LED control signal, auxiliary light emission control signal, high voltage input signal and the light emitting module, for providing driving current according to view data for the light emitting module, the light emitting module is lighted.The image element circuit eliminates the start splashette phenomenon caused by ELVDD rising, has more preferable display effect.
Description
Technical field
The invention belongs to display technology field, and in particular to a kind of driving method of image element circuit and image element circuit, display
Device.
Background technology
AMOLED (Active Matrix Organic Light Emission Display, active matrix organic electroluminescence
Luminescence display) displaying principle be by image element circuit by voltage ELVDD and ELVSS conversion be added to luminescent material the two poles of the earth, electric current
Driving luminescent material lights, so as to reach the purpose of display.Generally depletion type thin film transistor (TFT) is utilized in image element circuit
Being turned on and off of (Depletion mode Thin Film Transistor, abbreviation DTFT) carrys out the presence or absence of control voltage, but
It is that for AMOLED display panels in certain specific image element circuit structure, splashette phenomenon occurs in booting moment.
To find out its cause, the working characteristics signal of depletion type thin film transistor (TFT) as shown in Figure 1, the reason for splashette, analysis is such as
Under：The condition that depletion type thin film transistor (TFT) DTFT becomes conducting state by closed mode and need to met is：|VGS|>| Vth |, wherein,
VGS is DTFT gate source voltage, and Vth is DTFT threshold voltage.According to DTFT operation principle, ELVDD by 0V it is slow on
During rising to 4.6V, ELVDD change causes grid voltage to gradually rise, and causes | VGS |=| VG-ELVDD | it is increased to
It is more than | Vth |, i.e., | VGS |>| Vth |, DTFT enters conducting state by closed mode, produces electric current, due to ELVDD rising when
Between be millisecond magnitude, and it be musec order to control luminous LED control signal EM, so working as EM between low period, is necessarily deposited
The stage of linear zone is operated in DTFT.Now the quick increase of leakage current causes lumination of light emitting diode so that the first frame figure
As exception, namely appearance start splashette phenomenon occurs in display；With increase in current, DTFT working condition undergoes linear zone therewith
And saturation region, and clamper, in saturation region, ELVDD also has risen to 4.6V and keeps constant, LED control signal EM is low level
When, there is electric current to flow through in image element circuit and electric current is constant, lumination of light emitting diode, splashette phenomenon no longer occur.
Start splashette phenomenon can influence follow-up product development and influence display effect, therefore, design a kind of pixel electricity
Road, eliminate the technical problem that splashette phenomenon turns into urgently to be resolved hurrily at present of being started shooting caused by ELVDD rising.
The content of the invention
The technical problems to be solved by the invention are for above shortcomings in the prior art, there is provided a kind of pixel electricity
The driving method of road and image element circuit, display device, the image element circuit are good without start splashette, display effect.
Technical scheme is the image element circuit used by solving present invention problem, including writing module, reseting module,
Drive module and light emitting module, wherein：
Said write module, it is connected with scanning signal, data-signal and the drive module, for for the drive module
Input image data；
The reseting module, it is connected with reset signal, data-signal, initial voltage and the drive module, for resetting
The drive module, and write data-signal to drive module；
The drive module, with LED control signal, auxiliary light emission control signal, high voltage input signal and described luminous
Module connects, and for providing driving current according to view data for the light emitting module, the light emitting module is lighted.
Preferably, the drive module includes the first transistor, the 6th transistor, the 7th transistor, the 8th transistor
And storage capacitance, wherein：
The first transistor, its grid are connected with LED control signal, and the first pole is connected with reference voltage, the second pole with
The first end connection of the storage capacitance；
6th transistor, its grid are connected with the second end of the storage capacitance, and the first pole is believed with high voltage input
Number connection, the second pole is connected with the first pole of the 7th transistor；
7th transistor, its grid are connected with LED control signal, and the second pole is connected with the light emitting module；
8th transistor, its grid are connected with auxiliary light emission signal, and the first pole is connected with high voltage input signal, the
Two poles are connected with the second end of the storage capacitance.
Preferably, the reseting module includes second transistor and the 4th transistor, wherein：
The second transistor, its grid are connected with reset signal, and the first pole is connected with data-signal, the second pole with it is described
The first end connection of storage capacitance；
4th transistor, its grid are connected with reset signal, and the first pole is connected with initial voltage, the second pole with it is described
The second end connection of storage capacitance.
Preferably, said write module includes third transistor and the 5th transistor, wherein：
The third transistor, its grid are connected with scanning signal, and the first pole is connected with data-signal, the second pole with it is described
The first end connection of storage capacitance；
5th transistor, its grid are connected with scanning signal, and the first pole is connected with the second end of the storage capacitance,
Second pole is connected with the second pole of the 6th transistor.
Preferably, the light emitting module includes light emitting diode, and second pole of its positive pole and the 6th transistor connects
Connect, negative pole is connected with low-voltage input signal.
Preferably, the first transistor to the 8th transistor is p-type depletion type thin film transistor (TFT), or, institute
It is N-type depletion type thin film transistor (TFT) to state the first transistor to the 8th transistor.
A kind of display device, including above-mentioned image element circuit, multiple image element circuits are arranged in array.
A kind of driving method of above-mentioned image element circuit, including reseting stage, write phase and glow phase, wherein：
The reseting stage, under the control of reset signal, reset drives module, and believe to drive module write-in data
Number；
In the said write stage, under the control of scanning signal and data-signal, view data is write to drive module；
The glow phase, under the control of LED control signal and auxiliary light emission control signal, by drive module to
Light emitting module provides the driving current related to view data, light emitting module is lighted.
Preferably, reseting stage：Reset signal is low level, second transistor and the 4th transistor turns, and data are believed
The both ends of storage capacitance number are respectively written into initial voltage, initial voltage resets the grid voltage of the 6th transistor；
Write phase：Scanning signal is low level, third transistor and the 5th transistor turns；
Glow phase：LED control signal is low level, the first transistor and the 7th transistor turns：Inputted in high voltage
Signal ascent stage, auxiliary light emission control signal are low level, the 8th transistor turns, and the 6th transistor is in cut-off region, nothing
Electric current flows through light emitting diode, and light emitting diode is closed；Until high voltage input signal rises to the grid source electricity of the 6th transistor
When pressure is more than its own threshold voltage, the 6th transistor is begun to turn on, and gradually increase finally tends to be constant to electric current, increases in electric current
Stage keeps light emitting diode persistently to light.
Preferably, auxiliary light emission control signal is useful signal only during the first two field picture is shown, and useful signal
Duration 4.6V period is risen to by 0V for high voltage input signal.
The beneficial effects of the invention are as follows：The image element circuit is disappeared by using auxiliary light emission control signal in drive module
Except splashette phenomenon of being started shooting caused by ELVDD rising, there is more preferable display effect.
Brief description of the drawings
Fig. 1 is the working characteristics schematic diagram of thin film transistor (TFT)；
Fig. 2 is the high-level schematic functional block diagram of image element circuit in the embodiment of the present invention 1；
Fig. 3 is the circuit theory diagrams of image element circuit in the embodiment of the present invention 1；
Fig. 4 is the timing waveform of the driving method of the image element circuit in the embodiment of the present invention 1；
In figure：
1- drive modules；2- reseting modules；3- writing modules；4- light emitting modules.
Embodiment
To make those skilled in the art more fully understand technical scheme, below in conjunction with the accompanying drawings and specific embodiment party
Formula is described in further detail to the driving method of present invention pixel circuit and image element circuit, display device.
Embodiment 1：
The present embodiment provides a kind of image element circuit, and the image element circuit is good without start splashette, display effect.
As shown in Fig. 2 the image element circuit includes writing module 3, reseting module 2, drive module 1 and light emitting module 4, its
In：
Writing module 3, it is connected with scanning signal GATE, data-signal Vdata and drive module 1, for for drive module 1
Input image data；
Reseting module 2, it is connected, uses with reset signal REST, data-signal Vdata, initial voltage Vint and drive module 1
Data-signal is write in reset drives module 1, and to drive module；
Drive module 1, with LED control signal EM, auxiliary light emission control signal EMB, high voltage input signal ELVDD and
Light emitting module 4 connects, and for being that light emitting module 4 provides driving current according to view data, makes light emitting module 4 luminous.
As shown in figure 3, drive module 1 includes the first transistor T1, the 6th transistor T6, the 7th transistor T7, the 8th crystalline substance
Body pipe T8 and storage capacitance C, wherein：
The first transistor T1, its grid are connected with LED control signal EM, and the first pole is connected with reference voltage Vref, and second
Pole is connected with storage capacitance C first end；
6th transistor T6, its grid are connected with storage capacitance C the second end, the first pole and high voltage input signal
ELVDD connections, the second pole are connected with the 7th transistor T7 the first pole；
7th transistor T7, its grid are connected with LED control signal EM, and the second pole is connected with light emitting module 4；
8th transistor T8, its grid are connected with auxiliary light emission signal EMB, the first pole and high voltage input signal ELVDD
Connection, the second pole is connected with storage capacitance C the second end.
Reseting module 2 includes second transistor T2 and the 4th transistor T4, wherein：
Second transistor T2, its grid are connected with reset signal REST, and the first pole is connected with data-signal Vdata, and second
Pole is connected with storage capacitance C first end；
4th transistor T4, its grid are connected with reset signal REST, and the first pole is connected with initial voltage Vint, the second pole
It is connected with storage capacitance C the second end.
Writing module 3 includes third transistor T3 and the 5th transistor T5, wherein：
Third transistor T3, its grid are connected with scanning signal GATE, and the first pole is connected with data-signal Vdata, and second
Pole is connected with storage capacitance C first end；
5th transistor T5, its grid are connected with scanning signal GATE, and the first pole is connected with storage capacitance C the second end,
Second pole is connected with the 6th transistor T6 the second pole.
Light emitting module 4 includes light emitting diode, and its positive pole is connected with the 6th transistor T6 the second pole, negative pole and low-voltage
Input signal ELVSS connections.
For ease of follow-up circuit analysis, the tie point for defining T1, T2 and C first end is A points, and voltage thereon is shown as
VA；The tie point at T8, T4, T5, T6 and C the second end is B points, and voltage thereon is shown as VB.
The transistor used in all embodiments of the invention can for thin film transistor (TFT) or FET or other have
Identical voltage control capability characteristic identical device, the first transistor T1 to the 8th transistor T8 are that p-type depletion type film is brilliant
Body pipe, or, the first transistor T1 to the 8th transistor T8 is N-type depletion type thin film transistor (TFT).In embodiments of the present invention, when
During using N-type depletion mode transistor, it first extremely can be source electrode, and second extremely can be drain electrode, when using p-type depletion type crystal
Guan Shi, its first extremely can be drain electrode, second extremely can be source electrode.In type selecting, only need the transistor of selection type simultaneously
Port polarity make corresponding change in connection by the port polarity of the present embodiment transistor, it is any using and pixel electricity
Transistor in road is to cause the present invention to should be included in protection scope of the present invention according to the circuit of above-mentioned mode of operation
Interior, those skilled in the art can be changed according to being actually needed, and no longer be described in detail herein.
In the image element circuit of the present embodiment, transistor is that low level is effective, i.e., according to the switching characteristic of transistor, i.e. grid
When voltage is low, transistor turns.The level height being applied to by control on transistor gate, so as to control depletion type crystal
The closing and conducting of pipe.
Accordingly, the present embodiment also provides a kind of driving method of above-mentioned image element circuit, and the driving method includes resetting rank
Section, write phase and glow phase, wherein：
Reseting stage, under reset signal REST control, reset drives module 1, and believe to drive module write-in data
Number Vdata；
Write phase, under scanning signal GATE and data-signal Vdata control, picture number is write to drive module 1
According to；
Glow phase, under LED control signal EM and auxiliary light emission control signal EMB control, pass through drive module 1
The driving current related to view data is provided to light emitting module 4, makes light emitting module 4 luminous.
Timing waveform according to Fig. 4, during the first two field picture for being likely to occur abnormal show is shown so that play
Suppress the 8th transistor T8 conductings that light emitting diode is lighted extremely, high level input letter is provided for light emitting diode for set
Number ELVDD the 6th transistor T6 grid voltage；And the second two field picture normally shown since image element circuit is shown so that
8th transistor T8 is off state, i.e. grid voltage is high level.
In the driving method of the image element circuit：
Reseting stage (t1 stages)：Reset signal REST is low level, and second transistor T2 turns on the 4th transistor T4,
Data-signal Vdata and initial voltage Vint is respectively written into storage capacitance C both ends, and initial voltage Vint resets the 6th transistor
T6 grid voltage.In this stage, new data writes, and Vdata and Vint is respectively written into C both ends, and Vint resets T6 grids
Voltage.In this stage, VB=Vint, VA=Vdata.
Write phase (t2 stages)：Scanning signal GATE is low level, and third transistor T3 turns on the 5th transistor T5；
VB=ELVDD-Vth, VA=Vdata.In this stage, data-signal Vdata is written to C left side by T3, i.e. A points, its with
The difference of reference voltage Vref, determine the display brightness of light emitting diode.
Glow phase (t3 stages)：LED control signal EM is low level, and the first transistor T1 is led with the 7th transistor T7
It is logical：In high voltage input signal ELVDD ascent stages, auxiliary light emission control signal EMB is low level, and the 8th transistor T8 is led
Logical, the 6th transistor T6 is in cut-off region, and no current flows through light emitting diode, and light emitting diode is closed；Until high voltage inputs
When the gate source voltage that signal ELVDD rises to the 6th transistor T6 is more than its own threshold voltage, the 6th transistor T6 starts to lead
Logical, gradually increase finally tends to be constant to electric current, keeps light emitting diode persistently to light in the electric current increase stage.In this stage,
EMB is low level, and T8 conductings, during ELVDD rises, ELVDD is directly over T8 source-drain electrode, is added in T6 grid (i.e.
VB), T6 is in cut-off region during ELVDD rises, and so, when EM is low level, T6 is closed, and no current flows through
Light emitting diode, that is, be not in the first frame splashette phenomenon；Meanwhile EM is low level, T1 turns on T7, VA=Vref, so as to
There is VB=ELVDD- | Vth |+Vref-Vdata, now Vref-Vdata<0, work as VB<0 namely when reference voltage Vref and data
When signal Vdata difference is less than 0, T6 conductings, electric current flows through light emitting diode, makes lumination of light emitting diode.
However, in existing image element circuit, when ELVDD rises, make T6 gate source voltage | VGS |>Threshold voltage vt h,
T6 is begun to turn on, and electric current gradually crosses over linear zone during increase finally tends to be constant, due to there is electric current to pass through light-emitting diodes
Pipe therefore light by light emitting module, yet with the instability of driving current during this, therefore causes screen splashette occur and shows
As.And in the image element circuit of the present embodiment, by making auxiliary light emission control signal EMB only be during the first two field picture is shown
Useful signal, and the duration of useful signal is that high voltage input signal ELVDD rises to 4.6V (by display panel by 0V
Characteristic determines) period, you can the first two field picture of control show during without splashette, the second frame and its later image display phase
Between image element circuit can normally show.
Image element circuit in the present embodiment, addition T8 serves as switch between T6 grid source, in the first frame display picture,
T8 conductings are controlled by EMB, the ELVDD of T8 source electrode is transmitted to T6 grid, ensure T6 | VGS |<| Vth |, enter
And T6 is closed, avoiding T6 is operated in the stage of linear zone and directly enters saturation region from cut-off region, that is, exists
ELVDD ascent stage no current flows through light emitting diode, so during the first frame, splashette phenomenon would not occurs；Second
Frame and afterwards during T8 close, ensure normal display.
The image element circuit of the present embodiment, by directly provided for light emitting diode the transistor of glow current grid source it
Between switching transistor is set, and using the unlatching of auxiliary light emission control signal controlling switch transistor, eliminate due to ELVDD's
Start splashette phenomenon, has more preferable display effect, while also avoid the shadow to follow-up product development caused by rising
Ring.
Embodiment 2：
The present embodiment provides a kind of display device, and the display panel includes the image element circuit in embodiment 1, multiple pixel electricity
Road is arranged in array.
The display device can be：Electronic Paper, oled panel, mobile phone, tablet personal computer, television set, display, notebook electricity
Any product or part with display function such as brain, DPF, navigator.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, but the invention is not limited in this.For those skilled in the art, the essence of the present invention is not being departed from
In the case of refreshing and essence, various changes and modifications can be made therein, and these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
- A kind of 1. image element circuit, it is characterised in that including writing module, reseting module, drive module and light emitting module, wherein：Said write module, it is connected with scanning signal, data-signal and the drive module, for being inputted for the drive module View data；The reseting module, it is connected with reset signal, data-signal, initial voltage and the drive module, it is described for resetting Drive module, and write data-signal to drive module；The drive module, with LED control signal, auxiliary light emission control signal, high voltage input signal and the light emitting module Connection, for being carried under control of LED control signal and auxiliary light emission control signal according to view data for the light emitting module For driving current, the light emitting module is set to light.
- 2. image element circuit according to claim 1, it is characterised in that the drive module includes the first transistor, the 6th Transistor, the 7th transistor, the 8th transistor and storage capacitance, wherein：The first transistor, its grid are connected with LED control signal, and the first pole is connected with reference voltage, the second pole with it is described The first end connection of storage capacitance；6th transistor, its grid are connected with the second end of the storage capacitance, and the first pole connects with high voltage input signal Connect, the second pole is connected with the first pole of the 7th transistor；7th transistor, its grid are connected with LED control signal, and the second pole is connected with the light emitting module；8th transistor, its grid are connected with auxiliary light emission signal, and the first pole is connected with high voltage input signal, the second pole It is connected with the second end of the storage capacitance.
- 3. image element circuit according to claim 2, it is characterised in that the reseting module includes second transistor and the 4th Transistor, wherein：The second transistor, its grid are connected with reset signal, and the first pole is connected with data-signal, the second pole and the storage The first end connection of electric capacity；4th transistor, its grid are connected with reset signal, and the first pole is connected with initial voltage, the second pole and the storage The second end connection of electric capacity.
- 4. image element circuit according to claim 3, it is characterised in that said write module includes third transistor and the 5th Transistor, wherein：The third transistor, its grid are connected with scanning signal, and the first pole is connected with data-signal, the second pole and the storage The first end connection of electric capacity；5th transistor, its grid are connected with scanning signal, and the first pole is connected with the second end of the storage capacitance, and second Pole is connected with the second pole of the 6th transistor.
- 5. image element circuit according to claim 4, it is characterised in that the light emitting module includes light emitting diode, and it is just Pole is connected with the second pole of the 6th transistor, and negative pole is connected with low-voltage input signal.
- 6. image element circuit according to claim 4, it is characterised in that the first transistor to the 8th transistor is P-type depletion type thin film transistor (TFT), or, the first transistor to the 8th transistor is N-type depletion type thin film transistor (TFT).
- A kind of 7. display device, it is characterised in that including the image element circuit described in claim any one of 1-6, multiple pictures Plain circuit is arranged in array.
- 8. the driving method of any one of a kind of claim 1-6 image element circuit, it is characterised in that including reseting stage, write Enter stage and glow phase, wherein：The reseting stage, under the control of reset signal, reset drives module, and write data-signal to drive module；In the said write stage, under the control of scanning signal and data-signal, view data is write to drive module；The glow phase, under the control of LED control signal and auxiliary light emission control signal, by drive module to luminous Module provides the driving current related to view data, light emitting module is lighted.
- 9. the driving method of image element circuit according to claim 8, it is characterised in thatReseting stage：Reset signal is low level, second transistor and the 4th transistor turns, and data-signal divides with initial voltage Not Xie Ru storage capacitance both ends, initial voltage reset the 6th transistor grid voltage；Write phase：Scanning signal is low level, third transistor and the 5th transistor turns；Glow phase：LED control signal is low level, the first transistor and the 7th transistor turns：In high voltage input signal Ascent stage, auxiliary light emission control signal are low level, the 8th transistor turns, and the 6th transistor is in cut-off region, no current Light emitting diode is flowed through, light emitting diode is closed；Until the gate source voltage that high voltage input signal rises to the 6th transistor is big When its own threshold voltage, the 6th transistor is begun to turn on, and gradually increase finally tends to be constant to electric current, increases the stage in electric current Light emitting diode is kept persistently to light.
- 10. the driving method of image element circuit according to claim 9, it is characterised in that auxiliary light emission control signal only exists First two field picture is useful signal during showing, and the duration of useful signal is that high voltage input signal is risen to by 0V 4.6V period.
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| CN106710523B (en) | 2017-03-21 | 2019-03-12 | 昆山国显光电有限公司 | The driving method of organic light emitting display |
| CN106898302B (en) * | 2017-04-24 | 2019-01-25 | 京东方科技集团股份有限公司 | Pixel circuit control unit, driving method, pixel circuit and display device |
| CN107103877B (en) * | 2017-05-15 | 2019-06-14 | 京东方科技集团股份有限公司 | Pixel circuit and its driving method, display device |
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| CN113299230B (en) * | 2021-05-27 | 2023-01-10 | 昆山国显光电有限公司 | Pixel driving circuit, driving method of pixel driving circuit and display panel |
| CN113571013B (en) * | 2021-07-13 | 2022-09-09 | 京东方科技集团股份有限公司 | Pixel driving circuit, array substrate, preparation method of array substrate and display device |
| CN113920941B (en) * | 2021-11-16 | 2023-02-24 | 京东方科技集团股份有限公司 | Display module, driving method and display device |
| CN116312364B (en) * | 2023-03-21 | 2024-04-19 | 惠科股份有限公司 | Starting method of display panel and display panel |
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| KR100824852B1 (en) * | 2006-12-20 | 2008-04-23 | 삼성에스디아이 주식회사 | Organic light emitting display |
| KR100893482B1 (en) * | 2007-08-23 | 2009-04-17 | 삼성모바일디스플레이주식회사 | Organic Light Emitting Display and Driving Method Thereof |
| CN203882587U (en) * | 2014-06-13 | 2014-10-15 | 京东方科技集团股份有限公司 | Pixel drive circuit, array substrate and display device |
| CN104658480A (en) * | 2015-03-06 | 2015-05-27 | 京东方科技集团股份有限公司 | Pixel circuit, pixel circuit driving method and display device |
| CN104900194B (en) * | 2015-07-09 | 2017-07-18 | 京东方科技集团股份有限公司 | Image element circuit and driving method, display device |
| CN105405396B (en) * | 2016-01-11 | 2017-11-10 | 京东方科技集团股份有限公司 | A kind of driving method of Organic Light Emitting Diode, drive circuit and display device |
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