TWI574247B - Active matrix organic light emitting diode circuit and driving method thereof - Google Patents

Description

Active organic light emitting diode circuit and driving method thereof

The present disclosure relates to a diode circuit and a driving method thereof, and more particularly to an active organic light emitting diode circuit and a driving method thereof.

In various current digital display devices, the Active Matrix Organic Light Emitting Display (AMOLED) has self-luminous, high brightness, high luminous efficiency, high contrast, fast response, wide viewing angle, and The use of a wide temperature range and the like is therefore highly competitive in the market for digital display devices.

A conventional AMOLED device includes a scan driving circuit, a data driving circuit, and a plurality of display units. Each display unit in the conventional AMOLED device includes an input transistor, a driving transistor, a storage capacitor, and an organic light emitting diode.

The scan driving circuit and the data driving circuit are respectively used for providing scanning signals and data signals to the input transistors in each display unit, and each display unit controls the driving transistor to generate driving current, thereby driving organic signals. The light diode operates and emits light.

However, in the operation of the active organic light emitting diode display device, the driving current is affected by the threshold voltage of the driving transistor, because the threshold voltage of the driving transistor of each display unit in the AMOLED device exists. With a certain error, the drive current will cause a difference. When the driving current is different, the luminance of the organic light emitting diodes is inconsistent, so that the active organic light emitting diode display device has uneven brightness when displaying images.

One aspect of the present disclosure is to provide an active organic light emitting diode circuit including a first capacitor, an organic light emitting diode, a first transistor, a second transistor, a third transistor, and a fourth transistor. a fifth transistor, a sixth transistor, and a second capacitor. The first capacitor has a first end and a second end. The organic light emitting diode is coupled to the first reference voltage. The first transistor has a first end coupled to the organic light emitting diode, a second end, and a control end for receiving the first scan signal. The second transistor has a first end for receiving the second reference voltage, a second end, and a control end for receiving the first scan signal. The third transistor has a first end coupled to the second end of the second transistor, a second end coupled to the second end of the first transistor, and a control end coupled to the second end of the first capacitor. The fourth transistor has a first end coupled to the first end of the first capacitor, a second end coupled to the second end of the second transistor and a first end of the third transistor, and a control end for receiving the second scan Signal. The fifth transistor has a first end coupled to the second end of the first capacitor, a second end coupled to the second end of the first transistor, and a second end of the third transistor The terminal and the control terminal are configured to receive the second scan signal. The sixth transistor has a first end for receiving the data signal, a second end coupled to the first end of the first capacitor and a first end of the fourth transistor, and a control end for receiving the third scan signal. The second capacitor has a first end coupled to the first end of the first capacitor, a first end of the fourth transistor, and a second end of the sixth transistor, and the second end for receiving the second reference voltage.

A second aspect of the present disclosure is to provide an active organic light emitting diode circuit including a first capacitor, an organic light emitting diode, a switching circuit, a driving circuit, a compensation circuit, a data input circuit, and a voltage stabilizing circuit. The first capacitor has a first end and a second end. The organic light emitting diode is coupled to the first reference voltage for receiving the driving current. The switching circuit is coupled to the organic light emitting diode and the second reference voltage for supplying the driving current to the organic light emitting diode according to the first scanning signal. The driving circuit is coupled to the switching circuit for outputting a driving current. The compensation circuit is coupled to the first capacitor, the switching circuit and the driving circuit for controlling the voltage across the first capacitor according to the second scanning signal, so that the driving circuit outputs the driving current according to the voltage of the second end of the first capacitor. The data input circuit is coupled to the first capacitor and the compensation circuit for controlling the voltage of the first end of the first capacitor according to the third scan signal and the data signal. The voltage stabilizing circuit is coupled to the first capacitor, the compensation circuit, the data input circuit and the second reference voltage for stabilizing the voltage of the first end of the first capacitor and avoiding floating.

100‧‧‧Active Organic Light Emitting Diode Circuit

110‧‧‧Switching circuit

120‧‧‧Drive circuit

130‧‧‧Compensation circuit

140‧‧‧Data input circuit

150‧‧‧Variable circuit

C1‧‧‧first capacitor

C2‧‧‧second capacitor

Id‧‧‧ drive current

V _DATA ‧‧‧Information Signal

V _SS ‧‧‧First reference voltage

V _DD ‧‧‧second reference voltage

M1‧‧‧first transistor

M2‧‧‧second transistor

M3‧‧‧ third transistor

M4‧‧‧ fourth transistor

M5‧‧‧ fifth transistor

M6‧‧‧ sixth transistor

OLED‧‧ Organic Light Emitting Diode

S1‧‧‧ first scan signal

S2‧‧‧ second scan signal

S3‧‧‧ third scan signal

First time of T1‧‧

T2‧‧‧ second period

T3‧‧‧ third period

The above and other objects, features, advantages and embodiments of the present invention will become more apparent. However, you should understand In order to meet the practical use in the industry, many of the features are not shown in proportion. In fact, the dimensions of many of the features may be arbitrarily increased or decreased in order to clarify the following discussion. 1 is a schematic diagram of an active organic light emitting diode circuit according to an embodiment of the present disclosure; [Fig. 2] is a schematic view showing an active organic light emitting diode circuit of Fig. 1; FIG. 3 is a timing diagram showing the operation of an active organic light emitting diode circuit in the driving method of FIG. 1 and FIG. 2; FIG. 4 is a second diagram in the first time period. A schematic diagram of states of respective transistors in the active organic light emitting diode circuit; [Fig. 5] is a schematic view showing states of respective transistors in the active organic light emitting diode circuit of Fig. 2 in the second period; [Fig. 6] is a schematic view showing states of respective transistors in the active organic light emitting diode circuit of Fig. 2 in the third period.

The following disclosure provides many different embodiments or illustrations for implementing different features of the invention. The elements and configurations of the specific illustrations are used in the following discussion to simplify the disclosure. Any examples discussed are for illustrative purposes only and are not intended to limit the scope and meaning of the invention or its examples. In addition, the present disclosure may repeatedly recite numerical symbols and/or letters in different examples, which are for simplicity and elaboration, and do not specify the relationship between the various embodiments and/or configurations in the following discussion.

"Coupling" or "connecting" as used herein may mean that two or more elements are in direct physical or electrical contact with each other, or indirectly in physical or electrical contact with each other, and "coupled" or " Connections may also mean that two or more component elements operate or interact with each other. The use of the terms first, second, and third, etc., is used to describe various elements, components, regions, layers and/or blocks. However, these elements, components, regions, layers and/or blocks should not be limited by these terms. These terms are only used to identify a single element, component, region, layer, and/or block. Thus, a singular element, component, region, layer and/or block may be referred to as a second element, component, region, layer and/or block, without departing from the spirit of the invention. As used herein, the term "and/or" encompasses any combination of one or more of the listed associated items.

Please refer to FIG. 1 , which illustrates a schematic diagram of an active organic light emitting diode circuit 100 in accordance with an embodiment of the present disclosure. In an actual application, the active organic light emitting diode circuit 100 of the present embodiment can be used for an active matrix organic light emitting display (AMOLED). The display device may include a plurality of active organic light emitting diode circuits 100 as shown in FIG. 1 to form a complete display screen.

As shown in FIG. 1 , the active organic light emitting diode circuit 100 includes a first capacitor C1 , an organic light emitting diode OLED, a switching circuit 110 , a driving circuit 120 , a compensation circuit 130 , a data input circuit 140 , and a voltage stabilization circuit 150 . .

The first capacitor C1 has a first end N1 and a second end N2. Yu Shi In the application, the first capacitor C1 can be used as a storage capacitor for storing the control voltage of the driving circuit 120.

The organic light emitting diode OLED is coupled to the first reference voltage V _SS for receiving the driving current Id.

The switching circuit 110 is coupled to the organic light emitting diode OLED and the second reference voltage V _{DD for} supplying the driving current Id to the organic light emitting diode OLED according to the first scanning signal S1.

The driving circuit 120 is coupled to the switching circuit 110 for outputting the driving current Id.

The compensation circuit 130 is coupled to the first capacitor C1, the switching circuit 110, and the driving circuit 120 for controlling the voltage across the first capacitor C1 according to the second scanning signal S2, so that the driving circuit 120 is based on the second end N2 of the first capacitor C1. The voltage output drives the current Id. For example, when the second scan signal S2 is enabled, the compensation circuit 130 can adjust the voltage across the first capacitor C1, thereby compensating for the threshold voltage of the driving circuit 120.

The data input circuit 140 is coupled to the first capacitor C1 and the compensation circuit 130 for controlling the voltage of the first terminal N1 of the first capacitor C1 according to the third scan signal S3 and the data signal V _DATA . For example, when the third scan signal S3 is enabled, the data input circuit 140 inputs the data signal V _DATA to the first terminal N1 of the first capacitor C1.

The voltage stabilizing circuit 150 is coupled to the first capacitor C1, the compensation circuit 130, the data input circuit 140 and the second reference voltage V _DD for stabilizing the voltage of the first terminal N1 of the first capacitor C1 and avoiding floating. For example, when the organic light emitting diode OLED is emitting light, the voltage of the first terminal N1 of the first capacitor C1 is ensured to be coupled to the stable potential (for example, the second reference voltage V _DD ) through the voltage stabilizing circuit 150.

Please refer to FIG. 2, which is a schematic diagram of the active organic light emitting diode circuit 100 in FIG.

As shown in FIG. 2, the switching circuit 110 includes a first transistor M1 and a second transistor M2 for supplying a driving current Id to the organic light emitting diode OLED according to the first scanning signal S1. The first end of the first transistor M1 is coupled to the organic light emitting diode OLED to provide a driving current Id to the organic light emitting diode OLED. The second end of the first transistor M1 is coupled to the driving circuit 120 for receiving the driving current Id. The control end of the first transistor M1 is configured to receive the first scan signal S1. The first end of the second transistor M2 is configured to receive the second reference voltage V _DD . The second end of the second transistor M2 is coupled to the driving circuit 120. The control end of the second transistor M2 is configured to receive the first scan signal S1.

As shown in FIG. 2, the driving circuit 120 includes a third transistor M3 for outputting a driving current Id. The first end of the third transistor M3 is coupled to the switching circuit 110 (the second end of the second transistor M2). The second end of the third transistor M3 is coupled to the switching circuit (the second end of the first transistor M1) for outputting the driving current Id. The control terminal of the third transistor M3 is coupled to the second terminal N2 of the first capacitor C1. The magnitude of the driving current Id depends on the conduction state of the third transistor M3. In general, the magnitude of the current of the drive current (Id) can be known by the following formula (1): Where Vsg ₃ is the voltage difference between the source (first end) and the gate (control terminal) of the third transistor M3 in the driving circuit 120, and Vth ₃ is the threshold voltage of the third transistor M3. W represents the channel width of the third transistor M3, L represents the channel length of the third transistor M2, C represents the gate capacitance of the third transistor M3, and μ represents the equivalent carrier mobility of the third transistor M3 (equivalent Carrier mobility).

As shown in FIG. 2, the compensation circuit 130 includes a fourth transistor M4 and a fifth transistor M5 for controlling the voltage across the first capacitor C1 according to the second scanning signal S2 (the first terminal N1 and the second terminal N2). The driving circuit 120 outputs the driving current Id according to the voltage of the second terminal N2 of the first capacitor C1. The first end of the fourth transistor M4 is coupled to the first end N1 of the first capacitor C1. The second end of the fourth transistor M4 is coupled to the switching circuit 110 (the second end of the second transistor M2) and the driving circuit 120 (the first end of the third transistor M3). The control end of the fourth transistor M4 is configured to receive the second scan signal S2. The first end of the fifth transistor M5 is coupled to the second end N2 of the first capacitor C1. The second end of the fifth transistor M5 is coupled to the switching circuit 110 (the second end of the first transistor M1) and the driving circuit (the second end of the third transistor M3). The control end of the fifth transistor M5 is configured to receive the second scan signal S2. For example, when the second scan signal S2 is enabled, the fourth transistor M4 and the fifth transistor M5 in the compensation circuit 130 are turned on, and respectively control the voltage across the first capacitor C1 (the first end N1 and the second end) N2), thereby compensating for the threshold voltage of the drive circuit 120. Detailed compensation operations will be further detailed in subsequent paragraphs.

As shown in FIG. 2, the data input circuit 140 includes a sixth transistor M6 for controlling the voltage of the first terminal N1 of the first capacitor C1 according to the third scan signal S3 and the data signal V _DATA . The first end of the sixth transistor M6 is configured to receive the data signal V _DATA . The second end of the sixth transistor M6 is coupled to the first end N1 of the first capacitor C1 and the compensation circuit 130 (the first end of the fourth transistor). The control end of the sixth transistor M6 is configured to receive the third scan signal S3. For example, when the third scan signal S3 is enabled, the sixth transistor M6 in the data input circuit 140 is turned on, and the data signal V _{DATA is} input to the first terminal N1 of the first capacitor C1.

As shown in FIG. 2, the voltage stabilizing circuit 150 includes a second capacitor C2 for stabilizing the voltage of the first terminal N1 of the first capacitor C1 and avoiding floating. The first end of the second capacitor C2 is coupled to the first end N1 of the first capacitor C1, the compensation circuit 130 (the first end of the fourth transistor), and the data input circuit 140 (the second end of the sixth transistor). The second end of the second capacitor C2 is configured to receive the second reference voltage V _DD . For example, when the organic light emitting diode OLED is emitting light, ensure that the voltage of the first terminal N1 of the first capacitor C1 is coupled to the second capacitor C2 of the voltage stabilizing circuit 150 to a stable potential (eg, the second reference voltage V _DD ). .

Please refer to FIG. 3, which is a schematic diagram showing the timing of the operation of an active organic light-emitting diode circuit 100 in the driving method of FIG. 1 and FIG. As shown in FIG. 2 and FIG. 3, in the first time period T1, the driving method provides the first scanning signal S1 with the first level to the switching circuit 110, and provides the second scanning signal S2 with the second level to The compensation circuit 130 provides a third scan signal S3 with a first level to the data input circuit 140.

The second level is different from the first level. In this embodiment, the second level represents the voltage level of the enable state, and the first level represents the voltage level of the off state. In the embodiment of FIG. 2, the first transistor M1 to the sixth transistor M6 are exemplified by a low-energy transistor, and correspondingly, the first standard shown in FIG. 3 in this example The bit is at a high level and the second level is Low level, but the invention is not limited thereto, or a high-energy transistor can be used, and the definitions of the first and second levels can be adjusted accordingly, which is well known to those skilled in the art. .

Please refer to FIG. 4, which is a schematic diagram showing states of the transistors in the active organic light-emitting diode circuit 100 of FIG. 2 in the first period T1. In this embodiment, the first time period T1 corresponds to the compensation period of the active organic light emitting diode circuit 100.

During the first time period T1, the fourth transistor M4 is turned on to connect the first end of the third transistor M3 to the first end N1 of the first capacitor C1. At the same time, the fifth transistor M5 is turned on to form a path between the second end of the third transistor M3 and the control terminal. Thereby, a threshold voltage compensation operation is performed on the third transistor M3 of the driving circuit 120. After the fifth transistor M5 is turned on to compensate the voltage of the control terminal of the third transistor M3 and stabilized (even if the third transistor M3 is just in the on state), at this time, the source voltage of the third transistor M3 The potential difference between the voltage of the second terminal N2 and the gate voltage (voltage of the control terminal) is exactly equal to |Vth ₃ |, where Vth ₃ is the threshold voltage of the third transistor M3. That is to say, the voltage across the first capacitor C1 is equal to |Vth ₃ |, and the threshold voltage of the third transistor M3 can be stored/recorded in the first capacitor C1 and subsequently in the third transistor M3. The generated drive current Id is compensated so that the drive current Id is not affected by the threshold voltage of the third transistor M3.

During the first time period T1, the first transistor M1, the second transistor M2, and the sixth transistor M6 are not turned on. It should be added that the operation of the first time period T1 is controlled by the independent second scanning signal S2, and the length of time is not limited to the single line time (Line Time), which mainly means that the data signal V _DATA can be input to each column. The time of the first capacitor C1 of the active organic light-emitting diode circuit 100 is, in this embodiment, the second period T2 in FIG. The first time period T1 is also not limited to the clock length of other actions (such as data input, illumination, etc.), and the period of the first time period T1 may be, for example, N times of the single column scan time (second time period T2), and N is 2 In the above positive integer, for example, in the embodiment of FIG. 3, the duration of the first time period T1 may be twice the second time period T2. In this way, it can be ensured that the active organic light emitting diode circuit 100 has sufficient time to complete the threshold voltage compensation operation, that is, the threshold voltage of the third transistor M3 can be sufficiently compensated.

As shown in FIG. 2 and FIG. 3, in the second time period T2 after the first time period T1, the driving method switches the second scanning signal S2 from the second level to the first level to disable the compensation circuit 130. The threshold voltage compensation operates and switches the third scan signal S3 from the first level to the second level.

Please refer to FIG. 5, which is a schematic diagram showing states of the transistors in the active organic light-emitting diode circuit 100 of FIG. 2 in the second period T2. In this embodiment, the second time period T2 corresponds to the data input period of the active organic light emitting diode circuit 100.

During the second time period T2, the sixth transistor M6 is turned on, and then the data signal V _{DATA is} fed to the first terminal N1 of the first capacitor C1, and the voltage of the first terminal N1 is thus changed to V _DATA . It can be noted that the potential difference between the first ends of the first capacitor C1 is |Vth ₃ |, and there is no other current conduction path in the second period T2, so the voltage transition at the first end N1 of the first capacitor C1 When V _DATA is used, since the potential difference across the first capacitor C1 still needs to maintain |Vth ₃ |, the voltage of the second terminal N2 of the first capacitor C1 will be converted to V _DATA -|Vth ₃ |.

Further, in the second period T2, the first transistor M1, the second transistor M2, the fourth transistor M4, and the fifth transistor M5 are not turned on. Since the first transistor M1 and the second transistor M2 are not yet turned on, the organic light emitting diode OLED does not emit light.

As shown in FIG. 2 and FIG. 3, the driving method further includes switching the first scanning signal S1 from the first level to the second level. The third scan signal S3 is switched from the second level to the first level to disable the operation of the data input circuit 140.

Please refer to FIG. 6 , which is a schematic diagram showing states of the transistors in the active organic light emitting diode circuit 100 of FIG. 2 in the third period T3. In this embodiment, the third time period T3 corresponds to the light emission period of the active organic light emitting diode circuit 100.

In the third period T3, the first transistor M1 and the second transistor M2 are turned on, and the driving current Id is further fed to the organic light emitting diode OLED. It should be noted that if the first terminal N1 of the first capacitor C1 is floating, voltage drift may occur, thereby affecting the voltage of the second terminal N2 and the driving current Id generated by the third transistor M3. The second end of the second capacitor C2 in the voltage stabilizing circuit 150 is coupled to the second reference voltage V _DD and maintains a certain voltage difference across the capacitor circuit 150 to ensure that the voltage of the first terminal N1 of the first capacitor C1 passes through the voltage stabilizing circuit 150. The second capacitor C2 is coupled to a stable potential.

In the third period T3, it can be seen that the voltage difference between the source (first end) and the gate (control terminal) of the third transistor M3 is Vsg ₃ = V _DD - (V _DATA - | Vth ₃ |)

In the third time period T3, the magnitude of the current of the driving current Id can be known by the formula (2): In other words, ideally, through the active organic light emitting diode circuit 100 and the driving method of the embodiment, the magnitude of the current of the driving current Id in the light emitting period is not affected by the component characteristics of the driving transistor (such as different threshold voltages). Can provide a relatively stable drive current Id.

In summary, the present disclosure provides an active organic light emitting diode circuit having a threshold voltage compensation mechanism. The compensation time of the threshold voltage can be adjusted, and is not limited by the length of the single column scan time (that is, the time when a column of pixels inputs the data signal). In addition, during the light-emitting period of the organic light-emitting diode, the voltage of the capacitor is further stabilized and floated, thereby improving its stability.

The present disclosure has been disclosed in the above embodiments, but it is not intended to limit the disclosure, and any person skilled in the art can make various changes and refinements without departing from the spirit and scope of the disclosure. The scope of protection of the disclosure is subject to the definition of the scope of the patent application.

100‧‧‧Active Organic Light Emitting Diode Circuit

110‧‧‧Switching circuit

120‧‧‧Drive circuit

130‧‧‧Compensation circuit

140‧‧‧Data input circuit

150‧‧‧Variable circuit

C1‧‧‧first capacitor

Id‧‧‧ drive current

V _DATA ‧‧‧Information Signal

V _SS ‧‧‧First reference voltage

V _DD ‧‧‧second reference voltage

OLED‧‧ Organic Light Emitting Diode

S1‧‧‧ first scan signal

S2‧‧‧ second scan signal

S3‧‧‧ third scan signal

Claims (17)

An active organic light emitting diode circuit includes: a first capacitor having a first end and a second end; an organic light emitting diode coupled to a first reference voltage; and a first transistor having a first end is coupled to the organic light emitting diode, a second end, and a control end for receiving a first scan signal; a second transistor having a first end for receiving a second reference voltage a second end, and a control end for receiving the first scan signal; a third transistor having a first end coupled to the second end of the second transistor, and a second end coupled to the first a second end of the transistor and a control end coupled to the second end of the first capacitor; a fourth transistor having a first end coupled to the first end of the first capacitor and a second end coupled The second end of the second transistor and the first end of the third transistor, and a control end for receiving a second scan signal; a fifth transistor having a first end coupled to the first The second end of the capacitor is coupled to the second end of the first transistor and the third transistor a second end, and a control end for receiving the second scan signal; a sixth transistor having a first end for receiving a data signal, a second end coupled to the first end of the first capacitor, and the second end a first end of the fourth transistor, and a control end for receiving a third scan signal; and a second capacitor having a first end coupled to the first end of the first capacitor, the fourth transistor The first end and the second end of the sixth transistor and a second end are configured to receive the second reference voltage. An active organic light emitting diode circuit driving method for driving an active organic light emitting diode circuit according to claim 1, wherein the driving method comprises: enabling the first time period a short circuit is formed between the first end of the third transistor and the first end of the first capacitor, and a short circuit is formed between the second end of the third transistor and the control end of the third transistor; During a second time period after the time period, a data signal is fed to the first end of the first capacitor; and during a third time period after the second time period, the first transistor and the second transistor are turned on. The driving method of claim 2, wherein the driving method further comprises: providing the first scan signal having a first level to the first transistor and the second a second scan signal having a second level to the fourth transistor and the fifth transistor; and a third scan signal having the first level to the sixth transistor. The driving method of claim 3, wherein the driving method further comprises: switching the second scanning signal from the second level to the first level to disable the driving method. a threshold voltage compensation operation of the third transistor; and switching the third scan signal from the first level to the second level. The driving method of claim 4, wherein the driving method further comprises: switching the first scanning signal from the first level to the second level; and The third scan signal is switched from the second level to the first level to disable the operation of the sixth transistor. The driving method according to any one of claims 2 to 5, wherein the period of the first period is N times the period of the second period, and N is a positive integer of 1 or more. An active organic light emitting diode circuit includes: a first capacitor having a first end and a second end; and an organic light emitting diode coupled to a first reference voltage for receiving a driving current; a switching circuit, coupled to the organic light emitting diode and a second reference voltage, for supplying the driving current to the organic light emitting diode according to a first scanning signal; a driving circuit coupled to the switching circuit, The driving circuit has a first end, a second end, and a control end, the control end is coupled to the second end of the first capacitor; a compensation circuit is connected to the first capacitor, The switching circuit and the first end and the second end of the driving circuit are configured to control the first signal according to a second scanning signal a voltage across the capacitor, the driving circuit outputs the driving current according to the voltage of the second end of the first capacitor; a data input circuit coupled to the first capacitor and the compensation circuit for using a third scan signal a data signal controls a voltage of the first end of the first capacitor; and a voltage stabilizing circuit coupled to the first capacitor, the compensation circuit, the data input circuit and the second reference voltage for stabilizing the first capacitor The voltage at the first end. The active organic light emitting diode circuit of claim 7, wherein the switching circuit comprises: a first transistor having a first end coupled to the organic light emitting diode for providing the driving current The OLED is coupled to the driving circuit for receiving the driving current, and a control terminal for receiving the first scanning signal; and a second transistor having a first end Receiving the second reference voltage, a second end coupled to the driving circuit, and a control end for receiving the first scan signal. The active organic light emitting diode circuit of claim 7, wherein the driving circuit comprises a third transistor, the third transistor having a first end coupled to the switching circuit and a second end The switching circuit is coupled to output the driving current, and a control end is coupled to the second end of the first capacitor. The active organic light-emitting diode circuit of claim 7, wherein the compensation circuit comprises: a fourth transistor having a first end coupled to the first end of the first capacitor, and a second The terminal is coupled to the switching circuit and the driving circuit, and a control terminal is configured to receive the second scanning signal; and a fifth transistor has a first end coupled to the second end of the first capacitor, and a second The terminal is coupled to the switching circuit and the driving circuit, and a control terminal is configured to receive the second scanning signal. The active organic light emitting diode circuit of claim 7, wherein the data input circuit comprises a sixth transistor, the sixth transistor has a first end for receiving the data signal, The second end is coupled to the first end of the first capacitor and the compensation circuit, and a control end is configured to receive the third scan signal. The active organic light emitting diode circuit of claim 7, wherein the voltage stabilizing circuit includes a second capacitor, the second capacitor having a first end coupled to the first end of the first capacitor, The compensation circuit and the data input circuit are configured to stabilize the voltage of the first end of the first capacitor and prevent it from floating, and a second end is configured to receive the second reference voltage. An active organic light emitting diode circuit driving method for driving active organic light emitting as described in claim 7 The driving method includes: driving the compensation circuit through the second scanning signal and controlling the voltage of the second end of the first capacitor through an output voltage of the driving circuit in a first time period, thereby The driving circuit performs a threshold voltage compensation operation. The data input circuit is driven by the third scan signal and the voltage of the first end of the first capacitor is controlled by the data signal during a second time period after the first time period. And controlling, by the first capacitive coupling, a voltage of the second end of the first capacitor; and driving the driving circuit through the voltage of the second end of the first capacitor to output the driving in a third period after the second period The current is driven by the first scan signal to drive the switching circuit to feed the driving current into the organic light emitting diode, and the voltage of the first end of the first capacitor is stabilized by the voltage stabilizing circuit and is prevented from floating. The driving method of claim 13, wherein the driving method further comprises: providing the first scanning signal with a first level to the switching circuit; providing a second And locating the second scan signal to the compensation circuit; and providing the third scan signal having the first level to the data input circuit. The driving method of claim 14, wherein in the second time period, the driving method further comprises: Switching the second scan signal from the second level to the first level to disable the threshold voltage compensation operation of the compensation circuit; and switching the third scan signal from the first level to the second level Bit. The driving method of claim 15, wherein the driving method further comprises: switching the first scanning signal from the first level to the second level; and The third scan signal is switched from the second level to the first level to disable the operation of the data input circuit. The driving method according to any one of claims 13 to 16, wherein the period of the first period is N times the period of the second period, and N is a positive integer of 1 or more.