CN109637458A - AMOLED panel and driving method - Google Patents
AMOLED panel and driving method Download PDFInfo
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- CN109637458A CN109637458A CN201910143079.6A CN201910143079A CN109637458A CN 109637458 A CN109637458 A CN 109637458A CN 201910143079 A CN201910143079 A CN 201910143079A CN 109637458 A CN109637458 A CN 109637458A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3266—Details of drivers for scan electrodes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention relates to a kind of AMOLED panel and driving methods.The AMOLED panel includes: multiple pixel units in panel effective display area in display arrangement, and every row pixel unit connects corresponding scan line, and each column pixel unit connects corresponding data line and detection lines；Each pixel unit respectively includes corresponding AMOLED pixel-driving circuit, the first scanning signal (WR) and the second scanning signal (RD) of the AMOLED pixel-driving circuit that the pixel unit of line n is included in the panel are respectively the first scanning signal (WR (n)) and the second scanning signal (RD (n)) of the pixel unit of line n, in the panel, the first scanning signal (WR (n+1)) of the pixel unit of the second scanning signal (RD (n)) and the (n+1)th row of the pixel unit of the line n is shorted.The present invention is able to use single gate scheme driving AMOLED pixel-driving circuit, so as to reduce gate drivers or array substrate horizontal drive circuit cost, and improves AMOLED panel aperture opening ratio.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of AMOLED panel and driving methods.
Background technique
Organic Light Emitting Diode (OLED) display device has self-luminous, and driving voltage is low, and luminous efficiency is high, the response time
It is short, it many advantages, such as use temperature range is wide, is known as being the display device for most having development potentiality by industry.
OLED display panel according to driving method can be divided into passive matrix OLED (Passive Matrix OLED,
) and active array type OLED (Active Matrix OLED, AMOLED) two major classes PMOLED.Wherein, AMOLED panel has
In the pixel that array is arranged, belong to active display type, luminous efficacy is high, commonly used in large scale high-definition display dress
It sets.
It is a kind of existing AMOLED pixel-driving circuit schematic diagram, the AMOLED pixel-driving circuit master referring to Fig. 1
It include: first film transistor T1, as the second thin film transistor (TFT) T2, the third thin film transistor (TFT) of driving thin film transistor (TFT)
T3, first capacitor Cst, the second capacitor Csen and Organic Light Emitting Diode D1；The AMOLED pixel-driving circuit passes through detecting
Line connection sensing circuit is to realize that detecting function, circuit for detecting obtain detecting electricity from AMOLED pixel-driving circuit by detection lines
Vsamp is pressed, circuit for detecting may include in source electrode driver, can compensate for the second thin film transistor (TFT) using detecting voltage Vsamp
The threshold voltage vt h of T2 drives the uniformity of thin film transistor (TFT) and steady since AMOLED panel is current-driven display
Qualitative to will affect display effect, the threshold voltage vt h by compensating the second thin film transistor (TFT) T2 can promote display quality.
The grid of first film transistor T1 connects the first scanning signal WR, and source electrode and drain electrode is separately connected data-signal
Data-signal Data is transferred to by Data and first node g, first film transistor T1 under the control of the first scanning signal WR
The grid of second thin film transistor (TFT) T2；The grid of second thin film transistor (TFT) T2 connects first node g, and source electrode and drain electrode is separately connected
Second node s and power supply high voltage VDD；The grid of third thin film transistor (TFT) T3 connects the second scanning signal RD, source electrode and drain electrode
It is separately connected second node s and detection lines；The both ends of first capacitor Cst are separately connected first node g and second node s；Second
The both ends of capacitor Csen are separately connected detection lines and ground connection；The anode of Organic Light Emitting Diode D1 connects second node s, and cathode connects
Meet power supply low-voltage VSS.
Circuit for detecting mainly includes detecting pin ADC and reference voltage output terminal；It detects pin ADC and passes through first switch K1
Detection lines are connected, detecting pin ADC is connect by first switch K1 under the control of detection signal samp with detection lines, draws detecting
Foot ADC can obtain detecting voltage Vsamp from AMOLED pixel-driving circuit by detection lines, and detecting pin ADC can be further
It is connect with analog to digital conversion circuit to convert detecting voltage Vsamp；Reference voltage output terminal passes through second switch K2 connection detection lines,
Reference voltage output terminal is connect by second switch K2 under the control of control signal sen_pre with detection lines, keeps reference voltage defeated
Outlet can be pre-charged by detection lines to AMOLED pixel-driving circuit output reference voltage Vref.
AMOLED panel comprising existing AMOLED pixel-driving circuit generally uses bigrid (Two Gate) scanning to drive
Dynamic scheme, be derived from outside AMOLED pixel-driving circuit two groups of the first scanning signal WR and the second scanning signal RD are independent
Gated sweep signal, and gated sweep signal is then typically from the gate drivers outside AMOLED pixel-driving circuit
(Gate Driver) or array substrate row drive (GOA) circuit.
Referring to fig. 2, it is the bigrid turntable driving timing diagram of existing AMOLED panel, is understood in combination with Fig. 1.Its
In, CPV_WR and DIO_WR respectively indicate clock signal and scanning initial signal for the first scanning signal WR, can be used for producing
First scanning signal WR of each row pixel of dough plate；CPV_RD and DIO_RD respectively indicates the clock for the second scanning signal RD
Signal and scanning initial signal, can be used for generating the second scanning signal RD of each row pixel of panel；WR (1) ... WR (n) is respectively
Indicate the first scanning signal WR of the 1st row ... line n pixel；RD (1) ... RD (n) respectively indicates the 1st row ... line n picture
Second scanning signal RD of element；Data indicates that data-signal, Line (1) ... Line (n) are respectively indicated to the 1st row ... n-th
Row pixel conveys data-signal；The control signal of sen_pre expression second switch K2.
For large-sized AMOLED panel, the design of two groups of gated sweep signals can sacrifice biggish aperture opening ratio,
Two groups of gated sweep signals will increase gate drivers or array substrate horizontal drive circuit cost simultaneously.
Summary of the invention
Therefore, the purpose of the present invention is to provide a kind of AMOLED panel and driving methods, use single grid (One
Gate) mode drives AMOLED pixel-driving circuit.
To achieve the above object, the present invention provides a kind of AMOLED panels, are included in panel effective display area in display
Multiple pixel units of arrangement, every row pixel unit connect corresponding scan line, and each column pixel unit connects corresponding data line
And detection lines；Each pixel unit respectively includes corresponding AMOLED pixel-driving circuit, the AMOLED pixel-driving circuit
Include:
First film transistor, grid connect the first scanning signal, and source electrode and drain electrode is separately connected data-signal and the
One node；
Second thin film transistor (TFT), grid connect first node, and source electrode and drain electrode is separately connected second node and power supply is high
Voltage；
Third thin film transistor (TFT), grid connect the second scanning signal, and source electrode and drain electrode is separately connected second node and detects
Survey line；
First capacitor, both ends are separately connected first node and second node；
Second capacitor, both ends are separately connected detection lines and ground connection；
Organic Light Emitting Diode, anode connect second node, and cathode connects power supply low-voltage；
First scanning signal of the AMOLED pixel-driving circuit that the pixel unit of line n is included in the panel and
Two scanning signals are respectively the first scanning signal and the second scanning signal of the pixel unit of line n, described in the panel
First scanning signal of the pixel unit of the second scanning signal and the (n+1)th row of the pixel unit of line n is shorted.
Wherein, when the panel being driven to be shown, it is assumed that show every row pixel unit in the time in a frame of panel
Sweep time is t, then in the AMOLED pixel-driving circuit, first scanning signal persistently opens the first film crystal
The time of pipe is 2t, and the time that second scanning signal persistently opens third thin film transistor (TFT) is 2t, and described first thin
Film transistor is prior to third thin film transistor (TFT) opening time t.
Wherein, line n controlling grid scan line of the first scanning signal of the pixel unit of the line n from panel.
Wherein, the circuit for detecting includes detecting pin and reference voltage output terminal；Pin is detected to connect by first switch
Detection lines are connect, detecting pin is connect conducting with detection lines under the control of detection signal by first switch, so that detecting pin is logical
It crosses detection lines and obtains detecting voltage from AMOLED pixel-driving circuit；Reference voltage output terminal is connected by second switch and is detected
Line, reference voltage output terminal is connect by second switch with detection lines under control of the control signal, so that reference voltage output terminal
By detection lines to AMOLED pixel-driving circuit output reference voltage.
Wherein, the detecting pin is further connect to convert detecting voltage with analog to digital conversion circuit.
Wherein, the control signal remains high voltage in a frame of panel shows the time to open second switch.
Wherein, each pixel unit includes tetra- sub-pixels of RGBW.
Wherein, the data line includes tetra- kinds of data lines of RGBW.
The present invention also provides a kind of driving methods of aforementioned AMOLED panel, comprising: the panel is driven to be shown
When, it is assumed that the sweep time that every row pixel unit in the time is shown in a frame of panel is t, then in the AMOLED pixel driver
In circuit, the time that first scanning signal persistently opens first film transistor is 2t, and second scanning signal continues
The time for opening third thin film transistor (TFT) is 2t, and the first film transistor is prior to third thin film transistor (TFT) opening time
t。
To sum up, AMOLED panel of the invention and driving method are able to use single gate scheme driving AMOLED pixel driver
Circuit so as to reduce gate drivers or array substrate horizontal drive circuit cost, and improves AMOLED panel aperture opening ratio；It is logical
Pixel pre-charging functions can be realized by crossing setting driver' s timing, can be applied to large scale, the driving of the AMOLED panel of high-res.
Detailed description of the invention
With reference to the accompanying drawing, by the way that detailed description of specific embodiments of the present invention, technical solution of the present invention will be made
And other beneficial effects are apparent.
In attached drawing,
Fig. 1 is a kind of existing AMOLED pixel-driving circuit schematic diagram；
Fig. 2 is the bigrid turntable driving timing diagram of existing AMOLED panel；
Fig. 3 is the driving configuration diagram of one preferred embodiment of AMOLED panel of the present invention；
Fig. 4 is single gated sweep driver' s timing figure of one preferred embodiment of AMOLED panel of the present invention.
Specific embodiment
It is the driving configuration diagram of one preferred embodiment of AMOLED panel of the present invention referring to Fig. 3.It is provided by the present invention
AMOLED panel include multiple pixel units 1 in panel effective display area in display arrangement, every row pixel unit 1 connects phase
Scan line G (1), the G (2) ... answered, each column pixel unit 1 connect corresponding data line R, G, B, W and detection lines S；Each picture
Plain unit 1 respectively includes the AMOLED pixel-driving circuit of respective numbers, and each AMOLED pixel-driving circuit can correspond to drive
A sub-pixel is moved, such as the pixel unit 1 of four sub-pixels of RGBW sub-pixel, pixel unit 1 may include four
AMOLED pixel-driving circuit is to respectively drive tetra- sub-pixels of RGBW, the pixel of the namely line n of pixel unit 1 of line n
Several AMOLED pixel-driving circuits that unit 1 is included can be obtained by connecting the line n controlling grid scan line G (n) of panel
The corresponding gated sweep signal from gate drivers or array substrate horizontal drive circuit is obtained, it can also be in full by data line
Source electrode driver is connected to according to line R, G, B and W to obtain the corresponding data-signal of each sub-pixel, or is connected by detection lines S
Circuit for detecting is to realize that detecting function, circuit for detecting may include in source electrode driver；Each pixel unit 1 is namely picture
The AMOLED pixel-driving circuit that plain unit 1 is included also needs corresponding first scanning signal WR and the second scanning signal RD,
First scanning signal WR (n) of line n pixel unit 1 may come from the line n controlling grid scan line G (n) of panel, line n picture
Second scanning signal RD (n) of plain unit 1 may come from the (n+1)th row controlling grid scan line G (n+1) of panel.The present invention improves
Place is the pixel list by the second scanning signal RD of the i.e. AMOLED pixel-driving circuit of the pixel unit 1 of every row and next line
First scanning signal WR of the i.e. AMOLED pixel-driving circuit of member 1 is shorted together, so as to use identical gated sweep
Signal is to omit a gated sweep signal.
It referring to fig. 4, is single gated sweep driver' s timing figure of one preferred embodiment of AMOLED panel of the present invention.The present invention
When the driven pixel of AMOLED pixel-driving circuit in panel is located at panel line n, the first scanning signal WR is line n picture
First scanning signal WR (n) of element, the second scanning signal RD are the second scanning signal RD (n) of line n pixel, and second sweeps
The the first scanning signal WR (n+1) for retouching signal RD (n) and the (n+1)th row pixel is shorted, that is, two signals are identical.The present invention is logical
It crosses and is shorted together WR (n+1) with RD (n), become a signal, one group of gated sweep signal of panel can be reduced；Such as Fig. 4
In, WR (2) is identical as RD (1), eliminates original required RD (1) signal, and WR (2n+1) is identical as RD (2n), eliminates original
Required RD (2n) signal.In Fig. 4, CPV and DIO respectively indicate clock signal and scanning initial signal, can be used for generating multiple
First scanning signal WR and/or the second scanning signal RD；WR (1) ... WR (2n+1) respectively indicates the 1st row ... 2n+1 row
First scanning signal WR, RD (1) ... RD (2n) of pixel respectively indicates the second scanning signal of the 1st row ... 2n row pixel
RD, Data indicate that data-signal, Line (1) ... Line (n) respectively indicate the data for being delivered to the 1st row ... line n pixel
Data-signal when Display panel, using progressive scan mode, is supplied to corresponding sub-pixel by data line by signal；sen_pre
Indicate the control signal of second switch K2: as it can be seen that compared with Fig. 2, number of signals is substantially reduced in Fig. 4.
In addition to improvements of the present invention, the structure of AMOLED pixel-driving circuit according to the present invention can refer to Fig. 1,
Specifically include that first film transistor T1, as the second thin film transistor (TFT) T2, the third thin film transistor (TFT) of driving thin film transistor (TFT)
T3, first capacitor Cst, the second capacitor Csen and Organic Light Emitting Diode D1；The AMOLED pixel-driving circuit passes through detecting
Line connection sensing circuit is to realize that detecting function, circuit for detecting obtain detecting electricity from AMOLED pixel-driving circuit by detection lines
Press Vsamp.The grid of first film transistor T1 connects the first scanning signal WR, and source electrode and drain electrode is separately connected data-signal
Data-signal Data is transferred to by Data and first node g, first film transistor T1 under the control of the first scanning signal WR
The grid of second thin film transistor (TFT) T2；The grid of second thin film transistor (TFT) T2 connects first node g, and source electrode and drain electrode is separately connected
Second node s and power supply high voltage VDD；The grid of third thin film transistor (TFT) T3 connects the second scanning signal RD, source electrode and drain electrode
It is separately connected second node s and detection lines；The both ends of first capacitor Cst are separately connected first node g and second node s；Second
The both ends of capacitor Csen are separately connected detection lines and ground connection；The anode of Organic Light Emitting Diode D1 connects second node s, and cathode connects
Meet power supply low-voltage VSS.
Circuit for detecting may include in source electrode driver, and referring to Fig. 1, main includes detecting pin ADC and reference voltage
Output end；Pin ADC is detected by first switch K1 connection detection lines, first switch K1 will under the control of detection signal samp
Detecting pin ADC is connect with detection lines, detects detecting pin ADC from AMOLED pixel-driving circuit by detection lines
Voltage Vsamp is surveyed, detecting pin ADC can be further connect to convert detecting voltage Vsamp with analog to digital conversion circuit；Reference voltage
Output end is by second switch K2 connection detection lines, and second switch K2 is under the control of control signal sen_pre by reference voltage
Output end is connect with detection lines, is exported reference voltage output terminal to AMOLED pixel-driving circuit by detection lines and is referred to
Voltage Vref.
Further, from the timing of signal each in Fig. 4, it is assumed that show every row pixel unit in the time in a frame of panel
Sweep time be t, then the first scanning signal WR persistently open first film transistor T1 time be 2t, the second scanning signal
RD persistently open third thin film transistor (TFT) T3 time be 2t, and first film transistor T1 third thin film transistor (TFT) T3 it
Preceding time t is opened；Further, control signal sen_pre is shown in a frame of panel remains high voltage in the time to open the
Two switch K2.Therefore, according to timing shown in Fig. 4, in a frame time, the controlling grid scan line of panel can open simultaneously 2 rows simultaneously
Progressive scan, exports every row by data line and corresponds to display data, exports Vref voltage, it can be achieved that pixel preliminary filling by detection lines
Electricity is suitable for large scale, high-res AMOLED panel drives.
Based on timing shown in present invention AMOLED panel above-mentioned and Fig. 4, the present invention also provides the corresponding faces AMOELD
The driving method of plate, when the panel being driven to be shown, it is assumed that show every row pixel unit in the time in a frame of panel
Sweep time is t, then in the AMOLED pixel-driving circuit, the first scanning signal WR persistently opens the first film crystalline substance
The time of body pipe T1 is 2t, and the second scanning signal RD opens the time of third thin film transistor (TFT) T3 persistently as 2t, and institute
First film transistor T1 is stated prior to third thin film transistor (TFT) T3 opening time t；Further, it is possible to make to control signal sen_pre
High voltage is remained to open second switch K2, to be pre-charged in a frame of panel shows the time.
To sum up, AMOLED panel of the invention and driving method are able to use single gate scheme driving AMOLED pixel driver
Circuit so as to reduce gate drivers or array substrate horizontal drive circuit cost, and improves AMOLED panel aperture opening ratio；It is logical
Pixel pre-charging functions can be realized by crossing setting driver' s timing, can be applied to large scale, the driving of the AMOLED panel of high-res.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding changes and modifications are made in design, and all these change and modification all should belong to the appended right of the present invention
It is required that protection scope.
Claims (9)
1. a kind of AMOLED panel characterized by comprising in panel effective display area in multiple pixel lists of display arrangement
Member, every row pixel unit connect corresponding scan line, and each column pixel unit connects corresponding data line and detection lines；Each pixel
Unit respectively includes corresponding AMOLED pixel-driving circuit, and the AMOLED pixel-driving circuit includes:
First film transistor (T1), grid connect the first scanning signal (WR), and source electrode and drain electrode is separately connected data-signal
(Data) and first node (g)；
Second thin film transistor (TFT) (T2), grid connect first node (g), source electrode and drain electrode be separately connected second node (s) and
Power supply high voltage (VDD)；
Third thin film transistor (TFT) (T3), grid connect the second scanning signal (RD), and source electrode and drain electrode is separately connected second node
(s) and detection lines；
First capacitor (Cst), both ends are separately connected first node (g) and second node (s)；
Second capacitor (Csen), both ends are separately connected detection lines and ground connection；
Organic Light Emitting Diode (D1), anode connect second node (s), and cathode connects power supply low-voltage (VSS)；
The first scanning signal (WR) for the AMOLED pixel-driving circuit that the pixel unit of line n is included in the panel and
Two scanning signals (RD) are respectively the first scanning signal (WR (n)) and the second scanning signal (RD of the pixel unit of line n
(n)), in the panel, the pixel unit of the second scanning signal (RD (n)) and the (n+1)th row of the pixel unit of the line n
The first scanning signal (WR (n+1)) be shorted.
2. AMOLED panel as described in claim 1, which is characterized in that when the panel being driven to be shown, it is assumed that in face
One frame of plate shows that the sweep time of every row pixel unit in the time is t, then described in the AMOLED pixel-driving circuit
The time that first scanning signal (WR) persistently opens first film transistor (T1) is 2t, and second scanning signal (RD) continues
The time for opening third thin film transistor (TFT) (T3) is 2t, and the first film transistor (T1) is prior to third thin film transistor (TFT)
(T3) opening time t.
3. AMOLED panel as described in claim 1, which is characterized in that the first scanning letter of the pixel unit of the line n
The line n controlling grid scan line (G (n)) of number (WR (n)) from panel.
4. AMOLED panel as described in claim 1, which is characterized in that the circuit for detecting include detecting pin (ADC) and
Reference voltage output terminal；It detects pin (ADC) and detection lines is connected by first switch (K1), first switch (K1) is in detection signal
(samp) under control will detecting pin (ADC) connect conducting with detection lines so that detect pin (ADC) pass through detection lines from
AMOLED pixel-driving circuit obtains detecting voltage；Reference voltage output terminal by second switch (K2) connect detection lines, second
Reference voltage output terminal is connect by switch (K2) under the control of control signal (sen_pre) with detection lines, so that reference voltage
Output end passes through detection lines to AMOLED pixel-driving circuit output reference voltage (Vref).
5. AMOLED panel as claimed in claim 4, which is characterized in that the detecting pin (ADC) further turns with modulus
Circuit connection is changed to convert detecting voltage.
6. AMOLED panel as claimed in claim 4, which is characterized in that the control signal (sen_pre) is the one of panel
Frame, which was shown in the time, remains high voltage to open second switch (K2).
7. AMOLED panel as described in claim 1, which is characterized in that each pixel unit includes tetra- sub-pixels of RGBW.
8. AMOLED panel as claimed in claim 7, which is characterized in that the data line includes tetra- kinds of data lines of RGBW.
9. a kind of driving method of AMOLED panel as described in claim 1, which is characterized in that the panel is driven to be shown
When showing, it is assumed that the sweep time for showing every row pixel unit in the time in a frame of panel is t, then drives in the AMOLED pixel
In dynamic circuit, the time that first scanning signal (WR) persistently opens first film transistor (T1) is 2t, and described second sweeps
Retouch signal (RD) persistently open third thin film transistor (TFT) (T3) time be 2t, and the first film transistor (T1) prior to
Third thin film transistor (TFT) (T3) opening time t.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110322827A (en) * | 2019-08-15 | 2019-10-11 | 云谷（固安）科技有限公司 | A kind of digital driving method and display panel of display panel |
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