CN109410841A - Pixel circuit, display device and image element driving method - Google Patents
Pixel circuit, display device and image element driving method Download PDFInfo
- Publication number
- CN109410841A CN109410841A CN201811368380.9A CN201811368380A CN109410841A CN 109410841 A CN109410841 A CN 109410841A CN 201811368380 A CN201811368380 A CN 201811368380A CN 109410841 A CN109410841 A CN 109410841A
- Authority
- CN
- China
- Prior art keywords
- driving
- transistor
- signal
- data
- driving transistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
The invention discloses a kind of pixel circuit, display device and image element driving methods, comprising: the first drive sub-circuits, the second drive sub-circuits and luminescent device；First drive sub-circuits are configured as: the control of the grid driving signal provided in response to grid line and the first data-signal of the first data line offer, corresponding driving current is exported to luminescent device in first time period, and stops output driving current in second time period；Second drive sub-circuits are configured as: the control of the grid driving signal provided in response to grid line and the second data-signal of the second data line offer, corresponding driving current is exported to luminescent device in second time period, and stops output driving current in first time period；Luminescent device is used to be carried out according to the driving current received luminous；First drive sub-circuits and the second drive sub-circuits replace output driving current.Technical solution of the present invention can slow down the aging speed of driving transistor, promote display quality.
Description
Technical field
The present invention relates to field of display technology, in particular to pixel circuit, display device and image element driving method.
Background technique
Organic Light Emitting Diode (Organic Light Emitting Diode, OLED) display device have self-luminous,
Many advantages, such as driving voltage is low, luminous efficiency is high, the response time is short, clarity is high etc., is known as being most to have development by industry
The display device of potentiality.
Minimum luminescence unit in OLED display is pixel circuit, include in pixel circuit driving transistor and
OLED, OLED are current drive-type luminescent device, and driving transistor drives for the output of the data-signal according to provided by data line
Streaming current, to drive OLED to shine.
However, driving material aging, the variation of transistor with the passage for using the time, leading to the threshold for driving transistor
The problems such as threshold voltage drifts about, and in OLED display different driving transistor threshold voltage shift amount it is different, at this time
It is uneven to will appear OLED display light emission luminance, influences display quality.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art, a kind of pixel circuit, aobvious is proposed
Showing device and image element driving method.
To achieve the above object, the present invention provides a kind of pixel circuits, comprising: the first drive sub-circuits, the second driving
Sub-circuit and luminescent device；
First drive sub-circuits, first end, grid line, the first data line and the first power end with the luminescent device
Connection, is configured as: the grid driving signal provided in response to the grid line and the first data of first data line offer are believed
Number control, export corresponding driving current to the luminescent device in first time period, and stop in second time period
Only output driving current；
Second drive sub-circuits, first end, grid line, the second data line and first electricity with the luminescent device
Source connection, is configured as: the second number of the grid driving signal provided in response to the grid line and second data line offer
It is believed that number control, export corresponding driving current to the luminescent device in second time period, and in first time period
When stop output driving current；
The luminescent device, second end are connect with second source end, for being sent out according to the driving current received
Light；
First drive sub-circuits and second drive sub-circuits replace output driving current.
In some embodiments, first drive sub-circuits include: first switch transistor, first driving transistor and
First capacitor；
The control electrode of the first switch transistor is connect with the grid line, the first pole of the first switch transistor with
The control electrode of the first data line connection, the second pole of the first switch transistor and the first driving transistor connects
It connects；
The control electrode of the first driving transistor is connect with the first end of the first capacitor, the first driving crystal
First pole of pipe is connect with first power end, the second pole and the first of the luminescent device of the first driving transistor
End connection；
The second end of the first capacitor is connect with the second source end；
Second drive sub-circuits include: second switch transistor, the second driving transistor and the second capacitor；
The control electrode of the second switch transistor is connect with the grid line, the first pole of the second switch transistor with
The control electrode of the second data line connection, the second pole of the second switch transistor and the second driving transistor connects
It connects；
The control electrode of the second driving transistor is connect with the first end of second capacitor, the second driving crystal
First pole of pipe is connect with first power end, the second pole and the first of the luminescent device of the second driving transistor
End connection；
The second end of second capacitor is connect with the second source end.
In some embodiments, the first switch transistor, the second switch transistor, the first driving crystal
Pipe and the second driving transistor are simultaneously N-type transistor or are simultaneously P-type transistor.
In some embodiments, first data line and second data line are same data line；
First drive sub-circuits and second drive sub-circuits include shared first switch transistor and first
Capacitor, first drive sub-circuits further include: the first driving transistor, second drive sub-circuits further include: second drives
Dynamic transistor；
The control electrode of the first switch transistor is connect with the grid line, the first pole of the first switch transistor with
Control electrode, the institute of the first data line connection, the second pole of the first switch transistor and the first driving transistor
State the control electrode connection of the second driving transistor；
The control electrode of the first driving transistor is connect with the first end of the first capacitor, the first driving crystal
First pole of pipe is connect with first power end, the second pole of the first driving crystal and the first end of the luminescent device
Connection；
The control electrode of the second driving transistor is connect with the first end of the first capacitor, the second driving crystal
First pole of pipe is connect with first power end, the second pole of the second driving crystal and the first end of the luminescent device
Connection；
The second end of the first capacitor is connect with the second source end；
One of the first driving transistor and the second driving transistor are N-type transistor, and another one is p-type
Transistor.
In some embodiments, one of the first time period and the second time period are odd number frame period,
Another one is even number frame period.
To achieve the above object, the present invention also provides a kind of display devices, comprising: such as above-mentioned pixel circuit.
To achieve the above object, the present invention also provides a kind of image element driving method, the image element driving method is based on picture
Plain circuit, the pixel circuit use above-mentioned pixel circuit, comprising:
Step a, first time period, the grid driving signal and institute that first drive sub-circuits are provided in response to the grid line
The control of first data-signal of the first data line offer is provided and exports corresponding driving current to the luminescent device, described second
Second data-signal of grid driving signal and second data line offer that drive sub-circuits are provided in response to the grid line
Control not output driving current；
Step b, second time period, the grid driving signal and institute that second drive sub-circuits are provided in response to the grid line
The control of second data-signal of the second data line offer is provided and exports corresponding driving current to the luminescent device, described first
First data-signal of grid driving signal and first data line offer that drive sub-circuits are provided in response to the grid line
Control not output driving current；
The step a and the step b are alternately performed.
In some embodiments, when first drive sub-circuits include: first switch transistor, the first driving transistor
And first capacitor, second drive sub-circuits include: second switch transistor, the second driving transistor and the second capacitor, and
When the first driving transistor and the second driving transistor are N-type transistor or are simultaneously P-type transistor simultaneously；
The step a is specifically included:
The first switch transistor is connected in response to being in the control of the grid driving signal of significant level state,
First data-signal in the first level state is written brilliant to first driving by the first switch transistor
The control electrode of body pipe, so that the first driving transistor turns, the first driving transistor is according to first data
Signal exports corresponding driving current；The second switch transistor drives letter in response to the grid in significant level state
Number control and be connected, second data-signal in second electrical level state by the second switch transistor be written to
The control electrode of the second driving transistor, so that the second driving transistor cutoff；
The step b is specifically included:
The second switch transistor is connected in response to being in the control of the grid driving signal of significant level state,
Second data-signal in the first level state is written brilliant to second driving by the second switch transistor
The control electrode of body pipe, so that the second driving transistor turns, the second driving transistor is according to second data
Signal exports corresponding driving current；The first switch transistor drives letter in response to the grid in significant level state
Number control and be connected, first data-signal in second electrical level state by the first switch transistor be written to
The control electrode of the first driving transistor, so that the first driving transistor cutoff；
One of first level state and the second electrical level state are high level state, and another one is low level
State.
In some embodiments, when first drive sub-circuits include: first switch transistor, the first driving transistor
And first capacitor, second drive sub-circuits include: second switch transistor, the second driving transistor and the second capacitor, and
One of the first driving transistor and the second driving transistor are N-type transistor, and another one is P-type transistor
When；
The step a is specifically included:
The first switch transistor is connected in response to being in the control of the grid driving signal of significant level state,
First data-signal in the first level state is written brilliant to first driving by the first switch transistor
The control electrode of body pipe, so that the first driving transistor turns, the first driving transistor is according to first data
Signal exports corresponding driving current；The second switch transistor drives letter in response to the grid in significant level state
Number control and be connected, second data-signal in the first level state by the second switch transistor be written to
The control electrode of the second driving transistor, so that the second driving transistor cutoff；
The step b is specifically included:
The second switch transistor is connected in response to being in the control of the grid driving signal of significant level state,
Second data-signal in second electrical level state is written brilliant to second driving by the second switch transistor
The control electrode of body pipe, so that the second driving transistor turns, the second driving transistor is according to second data
Signal exports corresponding driving current；The first switch transistor drives letter in response to the grid in significant level state
Number control and be connected, first data-signal in second electrical level state by the first switch transistor be written to
The control electrode of the first driving transistor, so that the first driving transistor cutoff；
One of first level state and the second electrical level state are high level state, and another one is low level
State.
In some embodiments, when first data line and second data line are same data line；Described
One drive sub-circuits and second drive sub-circuits include shared first switch transistor and first capacitor, and described first drives
Mover circuit further includes the first driving transistor, when second drive sub-circuits further include the second driving transistor, the step
Rapid a is specifically included:
The first switch transistor is connected in response to being in the control of the grid driving signal of significant level state,
First data-signal in the first level state is written brilliant to first driving by the first switch transistor
The control electrode of the control electrode of body pipe and the second driving transistor, so that the first driving transistor turns, described the
Two driving transistor cutoffs, the first driving transistor export corresponding driving current according to first data-signal；
The step b includes: the first switch transistor in response to the grid driving letter in significant level state
Number control and be connected, first data-signal in second electrical level state by the first switch transistor be written to
The control electrode of the control electrode of the first driving transistor and the second driving transistor, so that the first driving crystal
Pipe cut-off, the second driving transistor turns, the second driving transistor are answered according to the first data-signal output phase
Driving current；
One of first level state and the second electrical level state are high level state, and another one is low level
State.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of pixel circuit in the prior art；
Fig. 2 is a kind of electrical block diagram for pixel circuit that the embodiment of the present invention one provides；
Fig. 3 is a kind of electrical block diagram of pixel circuit provided by Embodiment 2 of the present invention；
Fig. 4 is the working timing figure of pixel circuit shown in Fig. 3；
Fig. 5 is a kind of electrical block diagram for pixel circuit that the embodiment of the present invention three provides；
Fig. 6 is the working timing figure of pixel circuit shown in Fig. 5；
Fig. 7 is a kind of structural schematic diagram for pixel circuit that the embodiment of the present invention four provides；
Fig. 8 is the working timing figure of pixel circuit shown in Fig. 7；
Fig. 9 is a kind of flow chart for image element driving method that the embodiment of the present invention five provides.
Specific embodiment
To make those skilled in the art more fully understand technical solution of the present invention, the present invention is mentioned with reference to the accompanying drawing
Pixel circuit, display device and the image element driving method of confession are described in detail.
It includes light emitting diode (Light Emitting that luminescent device in the present invention can be in the prior art
Diode, LED) or Organic Light Emitting Diode (Organic Light Emitting Diode, OLED) including electric current driving
Luminescent device is the explanation carried out by taking OLED as an example in the present invention.
Fig. 1 is the structural schematic diagram of pixel circuit in the prior art, as shown in Figure 1, existing pixel-driving circuit uses
2T1C circuit, the 2T1C circuit specifically include: 1 switching transistor T0,1 driving transistor DTFT and 1 storage capacitance C.
In the driving stage of each frame, data voltage is written to driving transistor DTFT for switching transistor T0 conducting
Grid, driving transistor DTFT conducting and work in saturation state, drive transistor DTFT according to data voltage output driving
Electric current, to drive luminescent device OLED to shine.After the driving stage terminates, switching transistor T0 cut-off, but in storage electricity
Under the action of holding C, voltage at the grid of transistor DTFT is driven to maintain data voltage, driving transistor DTFT continues output driving
Electric current, luminescent device maintain to shine.When the driving stage of next frame starts, switching transistor T0 is connected again, new data
Voltage is written to the grid of driving transistor DTFT, and transistor DTFT is according to new data-signal output driving current for driving, with
Luminescent device OLED is driven to shine, luminescent device light emission luminance can change at this time.It repeats the above process, to complete continuous
Display.
During display, each driving transistor DTFT on display panel can continual output driving electricity
Stream, to drive luminescent device to shine；With the increase of use time, material aging, the variation of transistor DTFT, threshold value electricity are driven
Pressure is easy to happen drift.
In order to solve the above technical problems, the present invention provides a kind of pixel circuit, display device and image element driving methods.
Embodiment one
Fig. 2 is a kind of electrical block diagram for pixel circuit that the embodiment of the present invention one provides, as shown in Fig. 2, the picture
Plain circuit includes: the first drive sub-circuits 1, the second drive sub-circuits 2 and luminescent device OLED.
Wherein, the first end of the first drive sub-circuits 1 and luminescent device OLED, grid line Gate, the first data line Data1 and
The connection of first power end, is configured as: providing in response to the grid line Gate grid driving signal provided and the first data line Data1
The control of first data-signal exports corresponding driving current to luminescent device OLED in first time period, and second
Stop output driving current when the period.
The first end of second drive sub-circuits 2 and luminescent device OLED, grid line Gate, the second data line Data2 and first
Power end connection, is configured as: second provided in response to the grid line Gate grid driving signal provided and the second data line Data2
The control of data-signal exports corresponding driving current to luminescent device OLED in second time period, and at the first time
Stop output driving current when section.
The second end of luminescent device OLED is connect with second source end, for being sent out according to the driving current received
Light.
First drive sub-circuits 1 and the second drive sub-circuits 2 replace output driving current.
During continuously displaying, the first drive sub-circuits 1 and the second drive sub-circuits 2 are worked alternatively, and can be effectively shortened
The time of driving transistor output current, that is, shorten the working time of driving transistor in drive module, thus can slow down driving
The aging speed of transistor.
In the present embodiment, it is preferable that the duration of a first time period and a second time period is equal, such as both
Can be 1 frame, 2 frames, multiframe or any suitable period, at this time in two drive modules driving transistor aging speed base
This is consistent.As a kind of optional embodiment, one of first time period and second time period are odd number frame period, another
Person is even number frame period (duration of first time period and second time period is a frame).
Embodiment two
Fig. 3 is a kind of electrical block diagram of pixel circuit provided by Embodiment 2 of the present invention, as shown in figure 3, Fig. 3 institute
Show that pixel circuit is a kind of materialization scheme based on pixel circuit shown in Fig. 2, wherein the first drive sub-circuits 1 include: first
Switching transistor T1, the first driving transistor DTFT1 and first capacitor C1, the second drive sub-circuits 2 include: second switch crystal
Pipe T2, the second driving transistor DTFT2 and the second capacitor C2.
The control electrode of first switch transistor T1 is connect with grid line Gate, the first pole and first of first switch transistor T1
Data line Data1 connection, the second pole of first switch transistor T1 are connect with the control electrode of the first driving transistor DTFT1.
The control electrode of first driving transistor DTFT1 is connect with the first end of first capacitor C1, the first driving transistor
The first pole of DTFT1 is connect with the first power end, the second pole and the first of luminescent device OLED of the first driving transistor DTFT1
End connection.
The second end of first capacitor C1 is connect with second source end.
The control electrode of second switch transistor T2 is connect with grid line Gate, the first pole and second of second switch transistor T2
Data line Data2 connection, the second pole of second switch transistor T2 are connect with the control electrode of the second driving transistor DTFT2.
The control electrode of second driving transistor DTFT2 is connect with the first end of the second capacitor C2, the second driving transistor
The first pole of DTFT2 is connect with the first power end, the second pole and the first of luminescent device OLED of the second driving transistor DTFT2
End connection.
The second end of second capacitor C2 is connect with second source end.
It should be noted that the transistor in the present invention can be selected from polycrystal silicon film transistor, amorphous silicon film transistor, oxygen
One of compound thin film transistor (TFT) and Organic Thin Film Transistors." control electrode " of transistor specifically refers to the grid of transistor
Pole, " the first pole " specifically refer to the source electrode of transistor, and correspondingly " the second pole " specifically refers to the drain electrode of transistor.Certainly, ability
The technical staff in domain is it should also be understood that being somebody's turn to do " the first pole " can be interchangeable with " the second pole ".
In the present invention, the first power end provides the first operating voltage VDD, and second source end provides the second operating voltage
Vss.In being described below, the high/low level state of data-signal is using the first operating voltage VDD as reference, when data are believed
Number voltage value be greater than the first operating voltage VDD when, then data-signal is in high level state, when the voltage of data-signal is less than
When the first operating voltage VDD, then data-signal is in low level working condition.In addition, when the data in high level state are believed
When number being delivered to the grid of N-type driving transistor, it may make N-type driving transistor turns and work in saturation state；When being in
When the data-signal of low level state is delivered to the grid of N-type driving transistor, N-type may make to drive transistor cutoff；Work as place
When the data-signal of high level state is delivered to the grid of p-type driving transistor, p-type may make to drive transistor cutoff；When
Data-signal in low level state be delivered to p-type driving transistor grid when, may make p-type driving transistor turns and
Work in saturation state.
In the present invention, it is preferred to first switch transistor T1, second switch transistor T2, the first driving transistor
DTFT1, the second driving transistor DTFT2 are simultaneously N-type transistor or are simultaneously P-type transistor, and identical work can be used at this time
Skill to prepare above-mentioned each switching transistor and driving transistor simultaneously.
The course of work of pixel circuit shown in Fig. 3 is described in detail below in conjunction with attached drawing.Wherein, first switch
Transistor T1, second switch transistor T2, the first driving transistor DTFT1, the second driving transistor DTFT2 are N-type crystalline substance simultaneously
The duration of body pipe, first time period and second time period is 1 frame.
It should be noted that display device when showing a frame picture, can be divided into two stages: driving stage and stabilization
The display stage；In the driving stage, grid driving signal is progressively scanned, and data line data-signal is written each to respective column
Pixel unit, so that the luminescent device OLED in each pixel unit shines；Stablizing the display stage, under the action of capacitor,
The luminescent device OLED of each pixel unit maintains to shine.
Fig. 4 is the working timing figure of pixel circuit shown in Fig. 3, as shown in figure 4, for a pixel circuit,
The course of work in one frame time can also be divided into two stages: driving stage and display stage.
Shown in Figure 4, in n-th frame (corresponding first time period), when driving stage t1, the grid in grid line Gate are driven
Dynamic signal is in high level state, and the first data-signal in the first data line Data1 is in high level state, the second data line
The second data-signal in Data2 is in low level state.At this point, first switch transistor T1 and second switch transistor T2 are equal
Conducting, the first data-signal are written by first switch transistor T1 to the grid of the first driving transistor DTFT1, the second data
Signal is written by second switch transistor T2 to the grid of the second driving transistor DTFT2.Since the first data-signal is in
High level state then the first driving transistor DTFT1 conducting and works in saturation state, the first driving transistor DTFT1 according to
The voltage swing of first data-signal and the first operating voltage VDD export corresponding driving current, to drive luminescent device OLED
It shines；At the same time, since the second data-signal is in low level state, then the second driving transistor DTFT2 cut-off, does not export
Driving current.
In n-th frame (corresponding first time period), when showing stage t2, the grid driving signal in grid line Gate is in low
Signal is not loaded in level state, the first data line Data1 and the second data line Data2.At this point, first switch transistor T1 and
Second switch transistor T2 is turned off.But due to the presence of first capacitor C1 and the second capacitor C2, the first driving transistor
Voltage is maintained at the size at the stage of driving, the first driving transistor at the grid of the driving of DTFT1 and second transistor DTFT2
DTFT1 continues output driving current, and the second driving transistor DTFT2 maintains off state.
In the (n+1)th frame (corresponding second time period), when driving stage t1, the grid driving signal in grid line Gate is in
High level state, the first data-signal in the first data line Data1 are in low level state, in the second data line Data2
Second data-signal is in high level state.At this point, first switch transistor T1 and second switch transistor T2 are both turned on, first
Data-signal is written by first switch transistor T1 to the grid of the first driving transistor DTFT1, and the second data-signal passes through
Second switch transistor T2 is written to the grid of the second driving transistor DTFT2.Since the first data-signal is in low level shape
State, then the first driving transistor DTFT1 cut-off, stops output driving current；At the same time, since the second data-signal is in height
Level state then the second driving transistor DTFT2 conducting and works in saturation state, and the second driving transistor DTFT2 is according to the
The voltage swing of two data-signals and the first operating voltage VDD export corresponding driving current, to drive luminescent device OLED to send out
Light.
In the (n+1)th frame (corresponding second time period), when showing stage t2, the grid driving signal in grid line Gate is in
Signal is not loaded in low level state, the first data line Data1 and the second data line Data2.At this point, first switch transistor T1
It is turned off with second switch transistor T2.But due to the presence of first capacitor C1 and the second capacitor C2, the first driving crystal
Voltage is maintained at the size at the stage of driving, the first driving crystal at the grid of the driving of pipe DTFT1 and second transistor DTFT2
Pipe DTFT1 maintains off state, and the second driving transistor DTFT2 continues output driving current.
Similarly, in n+2 frame, the first driving transistor DTFT1 output driving current, the second driving transistor DTFT2 is cut
Only；In n+3 frame, the first driving transistor DTFT1 cut-off, the second driving transistor DTFT2 output driving current；With such
It pushes away.
It is assumed that a length of t when display device continuously displays, then in the prior art respectively driving transistor output driving current when
A length of t, and the when a length of t/2 of each driving transistor in the present embodiment in each pixel unit；Compared to the prior art, this implementation
Example technical solution can effectively shorten driving transistor operating time, delay drive transistor aging speed.
P-type transistor can also be used in first switch transistor T1 and second switch transistor T2 in the present embodiment；In addition,
First driving transistor DTFT1 and the second driving transistor DTFT2 can also use N-type transistor simultaneously.
It should be noted that in the present embodiment, as the first driving transistor DTFT1 and the second driving transistor DTFT2
When being N-type driving transistor, the voltage for the data-signal in low level state that first/second data line Data2 is provided
Size can be the arbitrary value less than VDD or a definite value less than VDD.As the first driving transistor DTFT1 and the second driving
When transistor DTFT2 is p-type driving transistor, the data in high level state of first/second data line Data2 offer
The voltage swing of signal can be the arbitrary value greater than VDD or a definite value greater than VDD.
Embodiment three
Fig. 5 is a kind of electrical block diagram for pixel circuit that the embodiment of the present invention three provides, as shown in figure 5, and Fig. 3
Shown pixel circuit is different, one in the first driving transistor DTFT1 and the second driving transistor DTFT2 in the present embodiment
Person is N-type transistor, and another one is P-type transistor.
The course of work of pixel circuit shown in Fig. 5 is described in detail below in conjunction with attached drawing.Wherein, first switch
Transistor T1, second switch transistor T2, the first driving transistor DTFT1 are N-type transistor, the second driving transistor DTFT2
For P-type transistor, the duration of first time period and second time period is 1 frame.
Fig. 6 is the working timing figure of pixel circuit shown in Fig. 5, as shown in fig. 6, in n-th frame (corresponding first time period),
When driving stage t1, the grid driving signal in grid line Gate is in high level state, the first number in the first data line Data1
It is believed that number being in high level state, the second data-signal in the second data line Data2 is in high level state.At this point, first
Switching transistor T1 and second switch transistor T2 are both turned on, and the first data-signal is written by first switch transistor T1 to
The grid of one driving transistor DTFT1, the second data-signal are written by second switch transistor T2 to the second driving transistor
The grid of DTFT2.It is N-type transistor since the first data-signal is in high level state and the first driving transistor DTFT1, then
First driving transistor DTFT1 is connected and works in saturation state, and the first driving transistor DTFT1 is according to the first data-signal
Voltage swing and the first operating voltage VDD export corresponding driving current, to drive luminescent device OLED to shine；At the same time,
It is P-type transistor since the second data-signal is in high level state and the second driving transistor DTFT2, then second drives crystal
Pipe DTFT2 ends, not output driving current.
In n-th frame (corresponding first time period), when showing stage t2, the grid driving signal in grid line Gate is in low
Signal is not loaded in level state, the first data line Data1 and the second data line Data2.At this point, first switch transistor T1 and
Second switch transistor T2 is turned off.But due to the presence of first capacitor C1 and the second capacitor C2, the first driving transistor
Voltage is maintained at the size at the stage of driving, the first driving transistor at the grid of the driving of DTFT1 and second transistor DTFT2
DTFT1 continues output driving current, and the second driving transistor DTFT2 maintains off state.
In the (n+1)th frame (corresponding second time period), when driving stage t1, the grid driving signal in grid line Gate is in
High level state, the first data-signal in the first data line Data1 are in low level state, in the second data line Data2
Second data-signal is in low level state.At this point, first switch transistor T1 and second switch transistor T2 are both turned on, first
Data-signal is written by first switch transistor T1 to the grid of the first driving transistor DTFT1, and the second data-signal passes through
Second switch transistor T2 is written to the grid of the second driving transistor DTFT2.Since the first data-signal is in low level shape
State and first driving transistor DTFT1 be N-type transistor, then first driving transistor DTFT1 cut-off, stop output driving electricity
Stream；It at the same time, is P-type transistor since the second data-signal is in low level state and the second driving transistor DTFT2, then
Second driving transistor DTFT2 is connected and works in saturation state, and the second driving transistor DTFT2 is according to the second data-signal
Voltage swing and the first operating voltage VDD export corresponding driving current, to drive luminescent device OLED to shine.
In the (n+1)th frame (corresponding second time period), when showing stage t2, the grid driving signal in grid line Gate is in
Low level state, the first data line Data1 are neutralized in the second data line Data2 and are not loaded signal.At this point, first switch transistor
T1 and second switch transistor T2 are turned off.But due to the presence of first capacitor C1 and the second capacitor C2, the first driving is brilliant
Voltage is maintained at the size at the stage of driving at the grid of the driving of body pipe DTFT1 and second transistor DTFT2, and the first driving is brilliant
Body pipe DTFT1 maintains off state, and the second driving transistor DTFT2 continues output driving current.
In the present embodiment, when the first driving transistor DTFT1 is P-type transistor, the second driving transistor DTFT2 is N
When transistor npn npn, the course of work is similar, is not described in detail herein.
It should be noted that in the present embodiment, when the first driving transistor DTFT1 is N-type transistor, the second driving crystalline substance
When body pipe DTFT2 is P-type transistor, the voltage for the data-signal in low level state that the first data line Data1 is provided is big
Small can be the arbitrary value less than VDD or a definite value less than VDD, and what the second data line Data2 was provided is in high level shape
The voltage swing of the data-signal of state can be the arbitrary value greater than VDD or a definite value greater than VDD；When the first driving crystal
When pipe DTFT1 is P-type transistor, the second driving transistor DTFT2 is N-type transistor, what the first data line Data1 was provided is in
The voltage swing of the data-signal of high level state can be the arbitrary value greater than VDD or a definite value greater than VDD, the second number
Voltage swing according to the line Data2 data-signal in low level state provided can be arbitrary value less than VDD or be less than
A definite value of VDD.
Example IV
Fig. 7 is a kind of structural schematic diagram for pixel circuit that the embodiment of the present invention four provides, as shown in fig. 7, picture shown in Fig. 7
Plain circuit is a kind of materialization scheme based on pixel circuit shown in Fig. 2, wherein the first data line Data1 and the second data line
Data2 is same data line (being referred to as the first data line Data1), the first drive sub-circuits 1 and the second drive sub-circuits 2 packet
Include shared first switch transistor T1 and first capacitor C1, the first drive sub-circuits 1 further include: the first driving transistor
DTFT1, the second drive sub-circuits 2 further include: the second driving transistor DTFT2.
The control electrode of first switch transistor T1 is connect with grid line Gate, the first pole and first of first switch transistor T1
Data line Data1 connection, the second pole of first switch transistor T1 drive the control electrode of transistor DTFT1, second to drive with first
The control electrode connection of dynamic transistor DTFT2.
The control electrode of first driving transistor DTFT1 is connect with the first end of first capacitor C1, the first driving transistor
The first pole of DTFT1 is connect with the first power end, and the second pole of the first driving crystal is connect with the first end of luminescent device OLED.
The control electrode of second driving transistor DTFT2 is connect with the first end of first capacitor C1, the second driving transistor
The first pole of DTFT2 is connect with the first power end, and the second pole of the second driving crystal is connect with the first end of luminescent device OLED.
The second end of first capacitor C1 is connect with second source end.
One of first driving transistor DTFT1 and the second driving transistor DTFT2 are N-type transistor, another one P
Transistor npn npn.
The course of work of pixel circuit shown in Fig. 7 is described in detail below in conjunction with attached drawing.Wherein, first switch
Transistor T1, second switch transistor T2, the first driving transistor DTFT1 are N-type transistor, the second driving transistor DTFT2
For P-type transistor, the duration of first time period and second time period is 1 frame.
Fig. 8 is the working timing figure of pixel circuit shown in Fig. 7, as shown in figure 8, in n-th frame (corresponding first time period),
When driving stage t1, the grid driving signal in grid line Gate is in high level state, the first number in the first data line Data1
It is believed that number be in high level state.At this point, first switch transistor T1 is connected, the first data-signal passes through first switch transistor
T1 is written to the grid of the first driving transistor DTFT1 and the second driving transistor DTFT2.Since the first data-signal is in height
Level state and first driving transistor DTFT1 be N-type transistor, then first driving transistor DTFT1 conducting and work in full
And state, the first driving transistor DTFT1 are answered according to the voltage swing and the first operating voltage VDD output phase of the first data-signal
Driving current, with drive luminescent device OLED shine；At the same time, since the first data-signal is in high level state and
Two driving transistor DTFT2 are P-type transistor, then the second driving transistor DTFT2 cut-off, not output driving current.
In n-th frame (corresponding first time period), when showing stage t2, the grid driving signal in grid line Gate is in low
Level state does not load signal in the first data line Data1.At this point, first switch transistor T1 ends.But due to first capacitor
C1 exists, therefore voltage is maintained in driving rank at the grid of the first driving transistor DTFT1 and the second driving transistor DTFT2
Size when section, the first driving transistor DTFT1 continue output driving current, and the second driving transistor DTFT2 maintains cut-off shape
State.
In the (n+1)th frame (corresponding second time period), when driving stage t1, the grid driving signal in grid line Gate is in
High level state, the first data-signal in the first data line Data1 are in low level state.At this point, first switch transistor
T1 conducting, the first data-signal are written by first switch transistor T1 to the grid of the first driving transistor DTFT1.Due to
It is N-type transistor that one data-signal, which is in low level state and the first driving transistor DTFT1, then the first driving transistor
DTFT1 cut-off, stops output driving current；At the same time, since the first data-signal is in low level state and the second driving
Transistor DTFT2 is P-type transistor, then the second driving transistor DTFT2 is connected and works in saturation state, the second driving crystal
Pipe DTFT2 exports corresponding driving current according to the voltage swing of the first data-signal and the first operating voltage VDD, to drive hair
Optical device OLED shines.
In the (n+1)th frame (corresponding second time period), when showing stage t2, the grid driving signal in grid line Gate is in
Low level state does not load signal in the first data line Data1.At this point, first switch transistor T1 ends.But due to the first electricity
Hold the presence of C1, therefore voltage is maintained at and is driving at the grid of the first driving transistor DTFT1 and the second driving transistor DTFT2
Size when the dynamic stage, the first driving transistor DTFT1 maintain off state, and the second driving transistor DTFT2 persistently exports drive
Streaming current.
Compared with the technical solution in embodiment three, the technical solution of the present embodiment can save a switching transistor and one
Data line effectively simplifies the complexity of pixel circuit.
It should be noted that in the present embodiment, what is provided in the first data line Data1 is in high level state or low electricity
The voltage swing of the data-signal of level state, need to be corresponding with the light emission luminance of luminescent device OLED.
Embodiment five
Fig. 9 is a kind of flow chart for image element driving method that the embodiment of the present invention five provides, as shown in figure 9, the pixel is driven
The pixel circuit in one~example IV, the image element driving method include: dynamic method based on the above embodiment
Step a, first time period, the grid driving signal and the first data line that the first drive sub-circuits are provided in response to grid line
The control of the first data-signal provided exports corresponding driving current to luminescent device, and the second drive sub-circuits are in response to grid line
The control for the second data-signal that the grid driving signal of offer and the second data line provide not output driving current.
Step b, second time period, the grid driving signal and the second data line that the second drive sub-circuits are provided in response to grid line
The control of the second data-signal provided exports corresponding driving current to luminescent device, and the first drive sub-circuits are in response to grid line
The control for the first data-signal that the grid driving signal of offer and the first data line provide not output driving current.
Wherein, step a and step b are alternately performed.
It is then walked as a kind of specific optinal plan when pixel circuit is the pixel circuit provided in above-described embodiment two
Detailed process is as follows by rapid a and step b:
Step a is specifically included: control of the first switch transistor in response to the grid driving signal in significant level state
And be connected, the first data-signal in the first level state is written by first switch transistor to the first driving transistor
Control electrode, so that the first driving transistor turns, the first driving transistor export corresponding driving according to the first data-signal
Electric current；Second switch transistor is connected in response to being in the control of the grid driving signal of significant level state, in the second electricity
Second data-signal of level state is written by second switch transistor to the control electrode of the second driving transistor, so that second
Drive transistor cutoff.
Step b is specifically included: control of the second switch transistor in response to the grid driving signal in significant level state
And be connected, the second data-signal in the first level state is written by second switch transistor to the second driving transistor
Control electrode, so that the second driving transistor turns, the second driving transistor export corresponding driving according to the second data-signal
Electric current；First switch transistor is connected in response to being in the control of the grid driving signal of significant level state, in the second electricity
First data-signal of level state is written by first switch transistor to the control electrode of the first driving transistor, so that first
Drive transistor cutoff.
One of first level state and second electrical level state are high level state, and another one is low level state.
It should be noted that the significant level state in the present invention refers to the shape for enabling to corresponding switching transistor conducting
State；Wherein, when switching transistor is N-type transistor, then significant level state is high level state；When switching transistor is P
When transistor npn npn, then significant level state is low level state.
The specific descriptions of above-mentioned steps a and step b can be found in the content in previous embodiment two.
As another specific optinal plan, when pixel circuit is the pixel circuit provided in above-described embodiment three, then
Detailed process is as follows by step a and step b:
Step a is specifically included: control of the first switch transistor in response to the grid driving signal in significant level state
And be connected, the first data-signal in the first level state is written by first switch transistor to the first driving transistor
Control electrode, so that the first driving transistor turns, the first driving transistor export corresponding driving according to the first data-signal
Electric current；Second switch transistor is connected in response to being in the control of the grid driving signal of significant level state, in the first electricity
Second data-signal of level state is written by second switch transistor to the control electrode of the second driving transistor, so that second
Drive transistor cutoff.
Step b is specifically included: control of the second switch transistor in response to the grid driving signal in significant level state
And be connected, the second data-signal in second electrical level state is written by second switch transistor to the second driving transistor
Control electrode, so that the second driving transistor turns, the second driving transistor export corresponding driving according to the second data-signal
Electric current；First switch transistor is connected in response to being in the control of the grid driving signal of significant level state, in the second electricity
First data-signal of level state is written by first switch transistor to the control electrode of the first driving transistor, so that first
Drive transistor cutoff.
One of first level state and second electrical level state are high level state, and another one is low level state.
The specific descriptions of above-mentioned steps a and step b can be found in the content in previous embodiment three.
As another specific optinal plan, when pixel circuit is the pixel circuit provided in above-described embodiment four, then
Detailed process is as follows by step a and step b:
Step a is specifically included: control of the first switch transistor in response to the grid driving signal in significant level state
And be connected, the first data-signal in the first level state is written by first switch transistor to the first driving transistor
The control electrode of control electrode and the second driving transistor, so that the first driving transistor turns, the second driving transistor cutoff, the
One driving transistor exports corresponding driving current according to the first data-signal.
Step b is specifically included: control of the first switch transistor in response to the grid driving signal in significant level state
And be connected, the first data-signal in second electrical level state is written by first switch transistor to the first driving transistor
The control electrode of control electrode and the second driving transistor, so that the first driving transistor cutoff, the second driving transistor turns, the
Two driving transistors export corresponding driving current according to the first data-signal.
The specific descriptions of above-mentioned steps a and step b can be found in the content in previous embodiment four.
Embodiment six
The embodiment of the present invention six provides a kind of display device, which includes: pixel circuit, which adopts
With the pixel circuit of offer any in one~example IV of above-described embodiment, specifically describes and can be found in above-described embodiment one~implementation
Content in example four, details are not described herein again.
It should be noted that the display device in the present invention can specifically include: Electronic Paper, oled panel, mobile phone, plate
Any products or components having a display function such as computer, television set, display, laptop, Digital Frame, 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, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a kind of pixel circuit characterized by comprising the first drive sub-circuits, the second drive sub-circuits and luminescent device；
First drive sub-circuits connect with first end, grid line, the first data line and the first power end of the luminescent device
It connects, is configured as: the first data-signal of the grid driving signal provided in response to the grid line and first data line offer
Control, export corresponding driving current to the luminescent device in first time period, and stop in second time period
Output driving current；
Second drive sub-circuits, first end, grid line, the second data line and first power end with the luminescent device
Connection, is configured as: the grid driving signal provided in response to the grid line and the second data of second data line offer are believed
Number control, export corresponding driving current to the luminescent device in second time period, and stop in first time period
Only output driving current；
The luminescent device, second end are connect with second source end, luminous for being carried out according to the driving current received；
First drive sub-circuits and second drive sub-circuits replace output driving current.
2. pixel circuit according to claim 1, which is characterized in that first drive sub-circuits include: first switch
Transistor, the first driving transistor and first capacitor；
The control electrode of the first switch transistor is connect with the grid line, the first pole of the first switch transistor with it is described
The connection of first data line, the second pole of the first switch transistor are connect with the control electrode of the first driving transistor；
The control electrode of the first driving transistor is connect with the first end of the first capacitor, the first driving transistor
First pole is connect with first power end, and the second pole of the first driving transistor and the first end of the luminescent device connect
It connects；
The second end of the first capacitor is connect with the second source end；
Second drive sub-circuits include: second switch transistor, the second driving transistor and the second capacitor；
The control electrode of the second switch transistor is connect with the grid line, the first pole of the second switch transistor with it is described
The connection of second data line, the second pole of the second switch transistor are connect with the control electrode of the second driving transistor；
The control electrode of the second driving transistor is connect with the first end of second capacitor, the second driving transistor
First pole is connect with first power end, and the second pole of the second driving transistor and the first end of the luminescent device connect
It connects；
The second end of second capacitor is connect with the second source end.
3. pixel circuit according to claim 2, which is characterized in that the first switch transistor, the second switch
Transistor, the first driving transistor and the second driving transistor are simultaneously N-type transistor or are simultaneously P-type crystal
Pipe.
4. pixel circuit according to claim 1, which is characterized in that first data line is with second data line
Same data line；
First drive sub-circuits and second drive sub-circuits include shared first switch transistor and first capacitor,
First drive sub-circuits further include: the first driving transistor, second drive sub-circuits further include: the second driving crystal
Pipe；
The control electrode of the first switch transistor is connect with the grid line, the first pole of the first switch transistor with it is described
The control electrode of the connection of first data line, the second pole of the first switch transistor and the first driving transistor, described the
The control electrode connection of two driving transistors；
The control electrode of the first driving transistor is connect with the first end of the first capacitor, the first driving transistor
First pole is connect with first power end, and the second pole of the first driving crystal and the first end of the luminescent device connect
It connects；
The control electrode of the second driving transistor is connect with the first end of the first capacitor, the second driving transistor
First pole is connect with first power end, and the second pole of the second driving crystal and the first end of the luminescent device connect
It connects；
The second end of the first capacitor is connect with the second source end；
One of the first driving transistor and the second driving transistor are N-type transistor, and another one is P-type crystal
Pipe.
5. pixel circuit according to any one of claims 1-4, which is characterized in that the first time period and described second
One of period is odd number frame period, and another one is even number frame period.
6. a kind of display device characterized by comprising such as above-mentioned pixel circuit as claimed in any one of claims 1 to 5.
7. a kind of image element driving method, which is characterized in that the image element driving method is based on pixel circuit, and the pixel circuit is adopted
With the pixel circuit any in the claims 1-5, comprising:
Step a, first time period, the grid driving signal and described that first drive sub-circuits are provided in response to the grid line
The control for the first data-signal that one data line provides exports corresponding driving current, second driving to the luminescent device
The control of second data-signal of grid driving signal and second data line offer that sub-circuit is provided in response to the grid line
Not output driving current；
Step b, second time period, the grid driving signal and described that second drive sub-circuits are provided in response to the grid line
The control for the second data-signal that two data lines provide exports corresponding driving current, first driving to the luminescent device
The control of first data-signal of grid driving signal and first data line offer that sub-circuit is provided in response to the grid line
Not output driving current；
The step a and the step b are alternately performed.
8. image element driving method according to claim 7, which is characterized in that when the pixel circuit is wanted using aforesaid right
Pixel circuit described in 2 is sought, and the first driving transistor and the second driving transistor are N-type transistor or same simultaneously
When be P-type transistor when；
The step a is specifically included:
The first switch transistor is connected in response to being in the control of the grid driving signal of significant level state, is in
First data-signal of first level state is written by the first switch transistor to the first driving transistor
Control electrode so that it is described first driving transistor turns, it is described first driving transistor according to first data-signal
Export corresponding driving current；The second switch transistor is in response to the grid driving signal in significant level state
It controls and is connected, second data-signal in second electrical level state is written by the second switch transistor to described
The control electrode of second driving transistor, so that the second driving transistor cutoff；
The step b is specifically included:
The second switch transistor is connected in response to being in the control of the grid driving signal of significant level state, is in
Second data-signal of first level state is written by the second switch transistor to the second driving transistor
Control electrode so that it is described second driving transistor turns, it is described second driving transistor according to second data-signal
Export corresponding driving current；The first switch transistor is in response to the grid driving signal in significant level state
It controls and is connected, first data-signal in second electrical level state is written by the first switch transistor to described
The control electrode of first driving transistor, so that the first driving transistor cutoff；
One of first level state and the second electrical level state are high level state, and another one is low level shape
State.
9. image element driving method according to claim 7, which is characterized in that when the pixel circuit is wanted using aforesaid right
Pixel circuit described in 2 is sought, and one of the first driving transistor and the second driving transistor are N-type crystal
Pipe, when another one is P-type transistor；
The step a is specifically included:
The first switch transistor is connected in response to being in the control of the grid driving signal of significant level state, is in
First data-signal of first level state is written by the first switch transistor to the first driving transistor
Control electrode so that it is described first driving transistor turns, it is described first driving transistor according to first data-signal
Export corresponding driving current；The second switch transistor is in response to the grid driving signal in significant level state
It controls and is connected, second data-signal in the first level state is written by the second switch transistor to described
The control electrode of second driving transistor, so that the second driving transistor cutoff；
The step b is specifically included:
The second switch transistor is connected in response to being in the control of the grid driving signal of significant level state, is in
Second data-signal of second electrical level state is written by the second switch transistor to the second driving transistor
Control electrode so that it is described second driving transistor turns, it is described second driving transistor according to second data-signal
Export corresponding driving current；The first switch transistor is in response to the grid driving signal in significant level state
It controls and is connected, first data-signal in second electrical level state is written by the first switch transistor to described
The control electrode of first driving transistor, so that the first driving transistor cutoff；
One of first level state and the second electrical level state are high level state, and another one is low level shape
State.
10. image element driving method according to claim 7, which is characterized in that when the pixel circuit uses aforesaid right
It is required that described in 4 when pixel circuit；
The step a is specifically included:
The first switch transistor is connected in response to being in the control of the grid driving signal of significant level state, is in
First data-signal of first level state is written by the first switch transistor to the first driving transistor
Control electrode and it is described second driving transistor control electrode so that it is described first driving transistor turns, it is described second drive
Dynamic transistor cutoff, the first driving transistor export corresponding driving current according to first data-signal；
The step b includes: the first switch transistor in response to the grid driving signal in significant level state
It controls and is connected, first data-signal in second electrical level state is written by the first switch transistor to described
The control electrode of the control electrode of first driving transistor and the second driving transistor, so that the first driving transistor is cut
Only, the second driving transistor turns, the second driving transistor export corresponding drive according to first data-signal
Streaming current；
One of first level state and the second electrical level state are high level state, and another one is low level shape
State.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368380.9A CN109410841B (en) | 2018-11-16 | 2018-11-16 | Pixel circuit, display device and pixel driving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368380.9A CN109410841B (en) | 2018-11-16 | 2018-11-16 | Pixel circuit, display device and pixel driving method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109410841A true CN109410841A (en) | 2019-03-01 |
| CN109410841B CN109410841B (en) | 2021-08-06 |
Family
ID=65473650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811368380.9A Active CN109410841B (en) | 2018-11-16 | 2018-11-16 | Pixel circuit, display device and pixel driving method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109410841B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110675805A (en) * | 2019-09-30 | 2020-01-10 | 南京中电熊猫液晶显示科技有限公司 | Pixel circuit, display device and pixel driving method |
| CN110767154A (en) * | 2019-06-14 | 2020-02-07 | 友达光电股份有限公司 | Pixel circuit, pixel circuit driving method and related display device |
| 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 |
| CN111210762A (en) * | 2019-07-17 | 2020-05-29 | 友达光电股份有限公司 | Pixel circuit |
| WO2020186811A1 (en) * | 2019-03-20 | 2020-09-24 | 京东方科技集团股份有限公司 | Pixel circuit and driving method, display panel and driving method, and display device |
| WO2020215884A1 (en) * | 2019-04-23 | 2020-10-29 | 京东方科技集团股份有限公司 | Pixel drive circuit and driving method therefor, display panel and display device |
| WO2020228062A1 (en) * | 2019-05-14 | 2020-11-19 | 深圳市华星光电半导体显示技术有限公司 | Pixel drive circuit and display panel |
| CN111986615A (en) * | 2020-08-27 | 2020-11-24 | 武汉华星光电技术有限公司 | Pixel circuit and display panel |
| CN112164369A (en) * | 2020-10-26 | 2021-01-01 | 京东方科技集团股份有限公司 | Drive circuit, display panel and display device |
| WO2021077487A1 (en) * | 2019-10-25 | 2021-04-29 | 深圳市华星光电半导体显示技术有限公司 | Pixel unit and display panel |
| WO2021082122A1 (en) * | 2019-10-29 | 2021-05-06 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and pixel driving method |
| CN112785961A (en) * | 2021-03-11 | 2021-05-11 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and display panel |
| US11238784B1 (en) | 2020-08-27 | 2022-02-01 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Pixel circuit and display panel |
| CN114333690A (en) * | 2021-12-28 | 2022-04-12 | 厦门天马微电子有限公司 | Drive circuit, display panel and display device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1474371A (en) * | 2002-08-07 | 2004-02-11 | 友达光电股份有限公司 | Pixel unit of organic light-emitting diode |
| CN102982764A (en) * | 2012-11-30 | 2013-03-20 | 南京中电熊猫液晶显示科技有限公司 | Active matrix organic light-emitting diode display and driving method thereof |
| CN103927991A (en) * | 2014-04-29 | 2014-07-16 | 何东阳 | AMOLED pixel circuit |
| US20160253014A1 (en) * | 2014-09-23 | 2016-09-01 | Boe Technology Group Co., Ltd. | Pixel circuit, its driving method, organic light-emitting diode display panel and display device |
| CN107123396A (en) * | 2017-07-13 | 2017-09-01 | 京东方科技集团股份有限公司 | A kind of OLED pixel circuit and its driving method, display device |
| CN107731163A (en) * | 2017-10-30 | 2018-02-23 | 合肥鑫晟光电科技有限公司 | Pixel-driving circuit and its driving method, display device |
-
2018
- 2018-11-16 CN CN201811368380.9A patent/CN109410841B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1474371A (en) * | 2002-08-07 | 2004-02-11 | 友达光电股份有限公司 | Pixel unit of organic light-emitting diode |
| CN102982764A (en) * | 2012-11-30 | 2013-03-20 | 南京中电熊猫液晶显示科技有限公司 | Active matrix organic light-emitting diode display and driving method thereof |
| CN103927991A (en) * | 2014-04-29 | 2014-07-16 | 何东阳 | AMOLED pixel circuit |
| US20160253014A1 (en) * | 2014-09-23 | 2016-09-01 | Boe Technology Group Co., Ltd. | Pixel circuit, its driving method, organic light-emitting diode display panel and display device |
| CN107123396A (en) * | 2017-07-13 | 2017-09-01 | 京东方科技集团股份有限公司 | A kind of OLED pixel circuit and its driving method, display device |
| CN107731163A (en) * | 2017-10-30 | 2018-02-23 | 合肥鑫晟光电科技有限公司 | Pixel-driving circuit and its driving method, display device |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020186811A1 (en) * | 2019-03-20 | 2020-09-24 | 京东方科技集团股份有限公司 | Pixel circuit and driving method, display panel and driving method, and display device |
| WO2020215884A1 (en) * | 2019-04-23 | 2020-10-29 | 京东方科技集团股份有限公司 | Pixel drive circuit and driving method therefor, display panel and display device |
| WO2020228062A1 (en) * | 2019-05-14 | 2020-11-19 | 深圳市华星光电半导体显示技术有限公司 | Pixel drive circuit and display panel |
| CN110767154A (en) * | 2019-06-14 | 2020-02-07 | 友达光电股份有限公司 | Pixel circuit, pixel circuit driving method and related display device |
| CN111210762A (en) * | 2019-07-17 | 2020-05-29 | 友达光电股份有限公司 | Pixel circuit |
| CN110675805A (en) * | 2019-09-30 | 2020-01-10 | 南京中电熊猫液晶显示科技有限公司 | Pixel circuit, display device and pixel driving method |
| WO2021077487A1 (en) * | 2019-10-25 | 2021-04-29 | 深圳市华星光电半导体显示技术有限公司 | Pixel unit and display panel |
| WO2021082122A1 (en) * | 2019-10-29 | 2021-05-06 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and pixel driving method |
| 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 |
| US11289023B2 (en) | 2019-12-02 | 2022-03-29 | Shenzhen China Star Optoeleetronies Semiconductor Display Technology Co., Ltd. | Pixel driver having two driving time periods and display panel |
| US11238784B1 (en) | 2020-08-27 | 2022-02-01 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Pixel circuit and display panel |
| WO2022041329A1 (en) * | 2020-08-27 | 2022-03-03 | 武汉华星光电技术有限公司 | Pixel circuit and display panel |
| CN111986615A (en) * | 2020-08-27 | 2020-11-24 | 武汉华星光电技术有限公司 | Pixel circuit and display panel |
| CN112164369A (en) * | 2020-10-26 | 2021-01-01 | 京东方科技集团股份有限公司 | Drive circuit, display panel and display device |
| CN112785961A (en) * | 2021-03-11 | 2021-05-11 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and display panel |
| CN114333690A (en) * | 2021-12-28 | 2022-04-12 | 厦门天马微电子有限公司 | Drive circuit, display panel and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109410841B (en) | 2021-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109410841A (en) | Pixel circuit, display device and image element driving method | |
| JP2022043138A (en) | Pixel of organic electroluminescent display device | |
| CN1551076B (en) | Image display device | |
| CN103165080B (en) | Pixel circuit and driving method and display device thereof | |
| US9496293B2 (en) | Pixel circuit and method for driving the same, display panel and display apparatus | |
| CN103440840B (en) | A kind of display device and image element circuit thereof | |
| CN106782338B (en) | Shift register cell and its driving method, gate driving circuit, display device | |
| WO2016188367A1 (en) | Shift register unit and driving method therefor, gate driving circuit, and display device | |
| CN114758619A (en) | Pixel circuit, driving method thereof, display panel and display device | |
| CN102651196B (en) | Drive circuit and drive method of AMOLED (Active Matrix Organic Light-Emitting Diode), and display device | |
| CN105913802B (en) | A kind of organic electroluminescent LED display panel and its driving method | |
| CN109509433A (en) | Pixel circuit, display device and image element driving method | |
| EP3067878A1 (en) | Scan driver and organic light-emitting display using same | |
| CN106782301A (en) | A kind of driving method of array base palte, display panel and display panel | |
| CN103021331A (en) | Pixel drive circuit, pixel drive method, pixel array substrate and pixel displaying device | |
| TW201528241A (en) | Scanning drive circuit and organic light-emitting displayer | |
| KR20130143318A (en) | Stage circuit and organic light emitting display device using the same | |
| CN106816140A (en) | Display panel and its driving method | |
| TW201137823A (en) | Pixel circuit relating to organic light emitting diode and display using the same and driving method thereof | |
| CN105139801A (en) | Array substrate line driving circuit, shift register, array substrate, and display | |
| CN103198794A (en) | Pixel circuit, drive method, organic luminance display panel and display device thereof | |
| WO2015051682A1 (en) | Pixel circuit and driving method thereof, and thin film transistor backplane | |
| CN107871471A (en) | A kind of pixel-driving circuit and its driving method, display device | |
| CN102693696B (en) | Image element circuit structure and the method driving image element circuit structure | |
| TW201519196A (en) | Pixel structure and driving method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |