CN108269526B - OLED display device and pixel circuit thereof, pixel unit circuit and driving method - Google Patents
OLED display device and pixel circuit thereof, pixel unit circuit and driving method Download PDFInfo
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- CN108269526B CN108269526B CN201710005474.9A CN201710005474A CN108269526B CN 108269526 B CN108269526 B CN 108269526B CN 201710005474 A CN201710005474 A CN 201710005474A CN 108269526 B CN108269526 B CN 108269526B
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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
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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
- G09G2310/00—Command of the display device
- G09G2310/06—Details of flat display driving waveforms
Abstract
The invention relates to an OLED display device, a pixel circuit, a pixel unit circuit and a driving method thereof. The first thin film transistor of the pixel unit circuit: the first end inputs a data signal, the second end is connected with the second thin film transistor, and the third end is used for inputting a first signal; a second thin film transistor: the second end inputs a first power supply voltage, and the third end is used for inputting a second signal; a third thin film transistor: the third end is connected with the second end of the second thin film transistor through the first capacitor; a fourth thin film transistor: the second end is connected with a second power supply voltage through an organic light emitting diode, and the third end is used for inputting a third signal; a fifth thin film transistor: the first end is connected with the third end of the third thin film transistor, and the third end inputs a first signal; two ends of the second capacitor are respectively connected with the first end of the first thin film transistor and the first end of the fifth thin film transistor. The OLED display device and the pixel circuit thereof, and the pixel unit circuit occupy less layout area, and can realize screen body display with higher resolution.
Description
Technical Field
The invention relates to the technical field of OLED display, in particular to an OLED pixel unit circuit.
Background
Fig. 1 is a schematic structural diagram of an OLED display device. The OLED display device 11 includes a data driving module 12, a gate driving module 13, and a pixel circuit 101. Wherein the pixel circuit 101 comprises a plurality of pixel unit circuits R, G, B, each of which is connected to the data line 121 of the data driving module 12 for receiving the data signal provided by the data driving module 12; each pixel unit circuit is connected to the scan line 131 of the gate driving module 13 for receiving a scan signal provided by the gate driving module 13. The pixel circuit 101 causes the sub-pixels to emit light according to the data signal supplied from the data driving block 12 and the scan signal supplied from the gate driving block 13, thereby displaying an image.
The pixel unit circuit of the conventional OLED display device mostly takes the form of 2T1C, as shown in fig. 2. The pixel unit circuit comprises two thin film transistors T1 and T2 and a capacitor C1, so the pixel unit circuit is called a 2T1C circuit. In the pixel unit circuit, the current flowing through the OLED is:
however, the LTPS process usually causes the threshold voltage Vth of the tft to be inconsistent, resulting in uneven screen brightness.
One solution to this problem is to compensate for the threshold voltage Vth of the thin film transistor, as shown in fig. 3. However, the number of devices and input voltage signals adopted by the scheme is large, the area occupied by the layout is large, and the realization of high resolution is very difficult.
Disclosure of Invention
In view of this, it is necessary to provide a pixel unit circuit having a simple structure that can compensate for the threshold voltage of the thin film transistor.
A pixel unit circuit comprises a first thin film transistor, a second thin film transistor, a third thin film transistor, a fourth thin film transistor, a fifth thin film transistor, a first capacitor, a second capacitor and an organic light emitting diode;
the first thin film transistor: the first end inputs a data signal, the second end is connected with the first end of the second thin film transistor, and the third end is used for inputting a first signal;
the second thin film transistor: the second end is used for inputting a first power supply voltage, and the third end is used for inputting a second signal;
the third thin film transistor: the first end of the first thin film transistor is connected with the second end of the first thin film transistor, the second end of the first thin film transistor is connected with the first end of the fourth thin film transistor, and the third end of the first thin film transistor is connected with the second end of the second thin film transistor through a first capacitor;
the fourth thin film transistor: the second end is connected with a second power supply voltage through the organic light emitting diode, and the third end is used for inputting a third signal; wherein a second terminal of the fourth thin film transistor is connected to an anode of the organic light emitting diode;
the fifth thin film transistor: the first end of the third thin film transistor is connected with the third end of the third thin film transistor, the second end of the third thin film transistor is connected with the first end of the fourth thin film transistor, and the third end of the fourth thin film transistor is used for inputting the first signal;
two ends of the second capacitor are respectively connected with the third end of the first thin film transistor and the first end of the fifth thin film transistor;
the first end and the second end are respectively a source electrode or a drain electrode, and the third end is a grid electrode; the first signal, the second signal and the third signal are high and low level signals for turning on or off the thin film transistor; the first power supply voltage is a positive voltage and the second power supply voltage is a negative voltage.
In one embodiment, the first thin film transistor, the second thin film transistor, the third thin film transistor, the fourth thin film transistor and the fifth thin film transistor are all PMOS transistors.
In one embodiment, the first thin film transistor, the second thin film transistor, the third thin film transistor, the fourth thin film transistor and the fifth thin film transistor are all NMOS transistors.
A pixel circuit comprises a plurality of pixel unit circuits.
An OLED display device comprises a data driving module, a grid driving module and the pixel circuit.
In one embodiment, the gate driving module is configured to output the first signal, the second signal and the third signal.
In one embodiment, the gate driving module and the pixel circuit are integrated in a screen body of the OLED display device.
A driving method of a pixel unit circuit is based on the pixel unit circuit and comprises the following steps:
setting the first signal and the third signal to turn on the first thin film transistor, the fourth thin film transistor and the fifth thin film transistor, and setting the second signal to turn off the second thin film transistor in a first period;
keeping the first thin film transistor and the fifth thin film transistor on and keeping the second thin film transistor off in a next second period; and setting the third signal to turn off a fourth thin film transistor;
then, setting the first signal to turn off the first thin film transistor and the fifth thin film transistor, and setting the second signal to turn on the second thin film transistor; setting the third signal to turn on a fourth thin film transistor.
In one embodiment, the first thin film transistor, the second thin film transistor, the third thin film transistor, the fourth thin film transistor and the fifth thin film transistor are all PMOS transistors;
setting the first signal and the third signal to be low level and setting the second signal to be high level in a first period;
setting the first signal to a low level, and setting the second signal and the third signal to a high level in a second period;
then, the first signal is set to a high level, and the second signal and the third signal are set to a low level.
In one embodiment, the first thin film transistor, the second thin film transistor, the third thin film transistor, the fourth thin film transistor and the fifth thin film transistor are all NMOS transistors;
setting the first signal and the third signal to be high level and setting the second signal to be low level in a first period;
setting the first signal to a high level, and setting the second signal and the third signal to a low level in a second period;
then, the first signal is set to a low level, and the second signal and the third signal are set to a high level.
According to the OLED display device, the pixel circuit, the pixel unit circuit and the driving method, the threshold voltage can be compensated by setting the first signal, the second signal and the third signal, so that the problem of uneven screen brightness is solved, the circuit structure is simpler, the area occupied by the layout is smaller, and the OLED display device can be applied to the design of a screen with higher resolution.
Drawings
FIG. 1 is a schematic structural diagram of an OLED display device;
FIG. 2 is a circuit diagram of a pixel cell of 2T 1C;
FIG. 3 is a circuit diagram of a conventional pixel unit capable of threshold compensation;
FIG. 4 is a schematic structural diagram of an OLED display device according to an embodiment;
FIG. 5 is a circuit diagram of a pixel cell according to an embodiment;
FIG. 6 is a timing diagram corresponding to a circuit diagram of a pixel unit according to an embodiment.
Detailed Description
The following further description is made in conjunction with the accompanying drawings and examples.
Fig. 4 is a schematic structural diagram of an OLED display device according to an embodiment. The OLED display device 111 includes a data driving module 112, a gate driving module 113, and a pixel circuit 1101. The pixel circuit 1101 includes a plurality of pixel unit circuits R, G, B, each of which is connected to the data line 1121 of the data driving module 112 for receiving the data signal provided by the data driving module 112; each pixel unit circuit is connected to the scan line 1131 of the gate driving module 113 for receiving a scan signal provided by the gate driving module 113. The pixel circuit 1101 causes the sub-pixels to emit light according to the data signal supplied from the data driving module 112 and the scan signal supplied from the gate driving module 113, thereby displaying an image.
As shown in fig. 5, the pixel unit circuit of an embodiment includes a first thin film transistor T1, a second thin film transistor T2, a third thin film transistor T3, a fourth thin film transistor T4, a fifth thin film transistor T5, a first capacitor C1, a second capacitor C2, and an organic light emitting diode OLED, which is exemplified by PMOS, but is not limited to PMOS, and other devices, such as NMOS, may be used.
The first thin film transistor T1: the first terminal receives the data signal VDATA, the second terminal is connected to the first terminal of the second thin film transistor T2, and the third terminal is used for receiving the first signal S1.
The second thin film transistor T2: the second terminal is used for connecting the first power voltage VDD, and the third terminal is used for inputting the second signal S2.
The third thin film transistor T3: the first terminal is connected to the second terminal of the first thin film transistor T1, the second terminal is connected to the first terminal of the fourth thin film transistor T4, and the third terminal is connected to the second terminal of the second thin film transistor T2 through the first capacitor C1.
The fourth thin film transistor T4: the second end is connected with the anode of the organic light emitting diode OLED, the cathode of the OLED is connected with a second power supply voltage VSS, and the third end is used for inputting a third signal S3.
The fifth thin film transistor T5: the first terminal is connected to the third terminal of the third tft T3, the second terminal is connected to the first terminal of the fourth tft T4, and the third terminal is used for inputting the first signal S1.
Two ends of the second capacitor C2 are respectively connected to the third end of the first thin film transistor T1 and the first end of the fifth thin film transistor T5;
the first end and the second end are respectively a source electrode or a drain electrode, and the third end is a grid electrode; the first signal S1, the second signal S2, and the third signal S3 are all high and low level signals for turning on or off the thin film transistor. The gate driving module 113 may be used to provide the first signal S1, the second signal S2, and the third signal S3.
In one embodiment, the gate driving module 113 may be integrated with the pixel circuit in a panel of the display device to form a GIP structure.
In one embodiment, the first thin film transistor, the second thin film transistor, the third thin film transistor, the fourth thin film transistor and the fifth thin film transistor are all PMOS transistors. In other embodiments, both NMOS transistors may be used.
Based on the pixel unit circuit, a driving method of the pixel unit circuit is provided, taking a PMOS transistor as an example, and includes:
step S100: in the first period, the first signal S1 is set to a low level, the second signal S2 is set to a high level, and the third signal S3 remains unchanged and is set to a low level. The first and fifth thin film transistors T1 and T5 are turned on, and the second signal S2 is set such that the second thin film transistor T2 is turned off. The gate voltage of the driving thin film transistor T3 is initialized by the negative voltage of the second power supply voltage VSS.
Step S200: in the next second period, the first signal S1 and the second signal S2 are set to remain unchanged, and the third signal S3 is set to a high level. The first thin film transistor T1 and the fifth thin film transistor T5 are kept turned on, and the second thin film transistor T2 is kept in an off state; the fourth thin film transistor T4 becomes an off state. The gate voltage of the driving thin film transistor T3 at this time becomes VDATA-Vth, which is an absolute value.
Step S300: in the third stage, the first signal S1 is set to high level, and the second signal S2 and the third signal S3 are set to low level. The first thin film transistor T1 and the fifth thin film transistor T5 are turned from on to off, and the second thin film transistor T2 is turned from off to on; the fourth thin film transistor T4 changes from off to on, and at this time, the threshold voltage compensation of the driving transistor T3 is completed, and the current of the light emitting diode OLED is:
IOLED＝1/2·μ·Cox·W/L·(VDD-VDATA)2
according to the expression, the OLED luminous current has no relation with the threshold voltage of the driving transistor, namely the compensation of the driving transistor is completed, the display consistency of the whole screen body is improved by adopting the screen body of the circuit, and the display quality is improved.
Meanwhile, the pixel circuit is initialized by using the second power supply voltage, the number of input voltages and input signal lines of the whole circuit is small, and the number of transistors of the circuit is small, so that the layout has a small area, and the pixel circuit can be applied to an AMOLED screen body with higher resolution.
If the above steps are based on the structure of the NMOS transistor, the high and low levels are all set in opposite directions to correspond to the change of the device.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A pixel unit circuit comprises a first thin film transistor, a second thin film transistor, a third thin film transistor, a fourth thin film transistor, a fifth thin film transistor, a first capacitor, a second capacitor and an organic light emitting diode;
the first thin film transistor: the first end inputs a data signal, the second end is connected with the first end of the second thin film transistor, and the third end is used for inputting a first signal;
the second thin film transistor: the second end is used for inputting a first power supply voltage, and the third end is used for inputting a second signal;
the third thin film transistor: the first end of the first thin film transistor is connected with the second end of the first thin film transistor, the second end of the first thin film transistor is connected with the first end of the fourth thin film transistor, and the third end of the first thin film transistor is connected with the second end of the second thin film transistor through a first capacitor;
the fourth thin film transistor: the second end is connected with a second power supply voltage through the organic light emitting diode, and the third end is used for inputting a third signal; wherein a second terminal of the fourth thin film transistor is connected to an anode of the organic light emitting diode;
the fifth thin film transistor: the first end of the third thin film transistor is connected with the third end of the third thin film transistor, the second end of the third thin film transistor is connected with the first end of the fourth thin film transistor, and the third end of the fourth thin film transistor is used for inputting the first signal;
two ends of the second capacitor are respectively connected with the third end of the first thin film transistor and the first end of the fifth thin film transistor;
the first end and the second end are respectively a source electrode or a drain electrode, and the third end is a grid electrode; the first signal, the second signal and the third signal are high and low level signals for turning on or off the thin film transistor; the first power supply voltage is a positive voltage, and the second power supply voltage is a negative voltage;
in a first time period, the first signal and the third signal are set to turn on the first thin film transistor, the fourth thin film transistor and the fifth thin film transistor, and the second signal is set to turn off the second thin film transistor to initialize and drive a gate voltage of the third thin film transistor.
2. The pixel cell circuit according to claim 1, wherein the first, second, third, fourth, and fifth thin film transistors are all PMOS transistors.
3. The pixel cell circuit according to claim 1, wherein the first, second, third, fourth, and fifth thin film transistors are all NMOS transistors.
4. A pixel circuit comprising a plurality of pixel cell circuits as claimed in any one of claims 1 to 3.
5. An OLED display device comprising a data driving module, a gate driving module, and the pixel circuit of claim 4.
6. The OLED display device according to claim 5, wherein the gate driving module is configured to output the first signal, the second signal and the third signal.
7. The OLED display device according to claim 5, wherein the gate driving module and the pixel circuit are integrated in a screen body of the OLED display device.
8. A driving method of a pixel unit circuit based on the pixel unit circuit of claim 1, comprising:
setting the first signal and the third signal to turn on the first thin film transistor, the fourth thin film transistor and the fifth thin film transistor, and setting the second signal to turn off the second thin film transistor in a first period;
keeping the first thin film transistor and the fifth thin film transistor on and keeping the second thin film transistor off in a next second period; and setting the third signal to turn off a fourth thin film transistor;
then, setting the first signal to turn off the first thin film transistor and the fifth thin film transistor, and setting the second signal to turn on the second thin film transistor; setting the third signal to turn on a fourth thin film transistor.
9. The method for driving the pixel unit circuit according to claim 8, wherein the first thin film transistor, the second thin film transistor, the third thin film transistor, the fourth thin film transistor, and the fifth thin film transistor are all PMOS transistors;
setting the first signal and the third signal to be low level and setting the second signal to be high level in a first period;
setting the first signal to a low level, and setting the second signal and the third signal to a high level in a second period;
then, the first signal is set to a high level, and the second signal and the third signal are set to a low level.
10. The method for driving the pixel unit circuit according to claim 8, wherein the first thin film transistor, the second thin film transistor, the third thin film transistor, the fourth thin film transistor, and the fifth thin film transistor are all NMOS transistors;
setting the first signal and the third signal to be high level and setting the second signal to be low level in a first period;
setting the first signal to a high level, and setting the second signal and the third signal to a low level in a second period;
then, the first signal is set to a low level, and the second signal and the third signal are set to a high level.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003224437A (en) * | 2002-01-30 | 2003-08-08 | Sanyo Electric Co Ltd | Current drive circuit and display device equipped with the current drive circuit |
| CN101630481A (en) * | 2008-07-18 | 2010-01-20 | 三星移动显示器株式会社 | Pixel and organic light emitting display device using the same |
| CN102314829A (en) * | 2010-06-30 | 2012-01-11 | 三星移动显示器株式会社 | Pixel and organic light emitting display using the same |
| CN102339586A (en) * | 2010-07-19 | 2012-02-01 | 三星移动显示器株式会社 | Pixel and organic light emitting display using the same |
| CN106067291A (en) * | 2016-08-18 | 2016-11-02 | 成都京东方光电科技有限公司 | A kind of pixel-driving circuit and driving method, display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070126663A1 (en) * | 2005-12-07 | 2007-06-07 | Gyu Hyun Kim | Pixel driving circuit with threshold voltage compensation circuit |
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- 2017-01-04 CN CN201710005474.9A patent/CN108269526B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003224437A (en) * | 2002-01-30 | 2003-08-08 | Sanyo Electric Co Ltd | Current drive circuit and display device equipped with the current drive circuit |
| CN101630481A (en) * | 2008-07-18 | 2010-01-20 | 三星移动显示器株式会社 | Pixel and organic light emitting display device using the same |
| CN102314829A (en) * | 2010-06-30 | 2012-01-11 | 三星移动显示器株式会社 | Pixel and organic light emitting display using the same |
| CN102339586A (en) * | 2010-07-19 | 2012-02-01 | 三星移动显示器株式会社 | Pixel and organic light emitting display using the same |
| CN106067291A (en) * | 2016-08-18 | 2016-11-02 | 成都京东方光电科技有限公司 | A kind of pixel-driving circuit and driving method, display device |
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Effective date of registration: 20201203 Address after: No.146 Tianying Road, high tech Zone, Chengdu, Sichuan Province Patentee after: Chengdu CHENXIAN photoelectric Co.,Ltd. Address before: 215300, 188, Feng Feng Road, Kunshan hi tech Zone, Suzhou, Jiangsu, Kunshan Patentee before: Kunshan New Flat Panel Display Technology Center Co.,Ltd. |