TWI444980B - Active matrix displaypanel and driving method thereof - Google Patents

Description

Active matrix display panel and driving method thereof

The present invention relates to an active matrix display panel and a driving method thereof, and more particularly to an active matrix display panel suitable for low frequency operation and a driving method thereof.

In recent years, with the rapid development of semiconductor technology, portable electronic products and flat panel display products have also emerged. Among the many types of flat panel displays, the liquid crystal panel has become the mainstream of display products based on its low voltage operation, no radiation scattering, light weight and small size.

In view of the power consumption of the liquid crystal display panel, the high frequency driving and the polarity inversion signal output of the driving IC account for a large proportion. Therefore, when the liquid crystal display panel is down-converted, the lower frequency signal output can achieve the energy saving effect. However, when the liquid crystal display panel performs low frequency operation, it may cause the result of flickering of the screen, and the main cause of flickering (<60Hz) causing the flickering of the screen is because the holding time is too long, resulting in a frame. The leakage voltage of the liquid crystal voltage (Vlc) through the thin film transistor is so large that the brightness which can be discerned by the human eye is lowered, and when charging is performed on the next picture, the brightness is obviously increased, thereby generating regular brightness and dark flicker.

Therefore, under the original display architecture, if you want to operate high frequency (60Hz) and low frequency (~1Hz) drivers at the same time, you will encounter a dilemma. In order to operate smoothly at high frequencies, it may be considered to store capacitors (Cs, storage) The capacitor) is reduced, but such a design will have a severe voltage change due to leakage current when switching to low frequency operation, and the flicker is severe. If the operation is to perform a low-frequency operation, the storage capacitor is increased, but when it is replaced with a high-frequency operation, the charging time will be insufficient. Therefore, the conventional liquid crystal display panel is limited by the on/off ratio of the thin film transistor, that is, the ratio between the current when the same thin film transistor is turned on and the current when it is turned off will be limited. Due to the nature of thin film transistor technology, it is difficult to make great changes in panel design. In general, the panel will take into account the high-frequency charging time, so it is necessary to use the low-frequency operation to save energy and cause serious flicker.

The invention provides an active matrix display panel and a driving method for low frequency driving of an active matrix display panel to reduce power consumption.

The invention provides an active matrix display panel and a driving method. When the active matrix display panel performs low frequency operation, the pixel charging time can be extended and the picture flickering condition can be reduced without increasing the charging load.

The present invention provides an active matrix display panel comprising a data line, a pixel, and a first scan line, wherein the pixel comprises a first thin film transistor, a pixel electrode and a storage capacitor, and the first thin film transistor The source is electrically connected to the data line, and the first drain of the first thin film transistor is electrically connected to the pixel electrode and the storage capacitor. The first scan line intersects the data line and controls the switching of the first thin film transistor. The active matrix display panel of the present invention further includes a second thin film transistor, a compensation capacitor and a second scan line. The source of the second thin film transistor is electrically connected to the first drain of the first thin film transistor. The second thin film transistor is electrically connected to the compensation capacitor, the second scan line intersects the data line, and controls the switching of the second thin film transistor.

In an embodiment of the invention, the compensation capacitor includes a compensation electrode electrically coupled to the pair of compensation electrodes, and the compensation electrode is electrically connected to the drain of the second thin film transistor.

In an embodiment of the invention, the compensation electrode and the opposite compensation electrode are located between the pixel electrode and the first scan line.

In an embodiment of the invention, the second scan line is located between the pixel electrode and the first scan line.

In an embodiment of the invention, the storage capacitor includes a storage electrode electrically coupled to the portion of the pixel electrode.

In an embodiment of the invention, the first scan line, the second scan line, the opposite compensation electrode, and the storage electrode belong to the same patterned metal layer.

In an embodiment of the invention, the first thin film transistor further includes a first drain metal layer, and the first drain metal layer is electrically connected to the pixel electrode and the second thin film transistor, respectively. Source.

In an embodiment of the invention, the compensation electrode is electrically connected to the second drain of the first thin film transistor.

In an embodiment of the invention, the compensation capacitor includes a compensation electrode electrically coupled to the pair of compensation electrodes, and the compensation electrode is electrically connected to the drain of the second thin film transistor.

In an embodiment of the invention, the compensation electrode and the opposite compensation electrode are located between the pixel electrode and the first scan line.

In an embodiment of the invention, the second scan line is located between the pixel electrode and the first scan line.

In an embodiment of the invention, the storage capacitor includes a storage electrode electrically coupled to the portion of the pixel electrode.

In an embodiment of the invention, the first scan line, the second scan line, the opposite compensation electrode, and the storage electrode belong to the same patterned metal layer.

In an embodiment of the invention, the first thin film transistor further includes a first drain metal layer, and the first drain metal layer is electrically connected to the pixel electrode and the second thin film transistor, respectively. Source.

The active matrix display panel is driven by the active matrix display panel according to the foregoing item. The driving method of the active matrix display panel includes providing a data signal to the data line. And providing a driving signal to the first scan line, wherein when the frequency of the driving signal is greater than or equal to a predetermined value, the first thin film transistor is turned on during charging and the second thin film transistor is turned off; when the driving signal is When the frequency is less than the predetermined value, the first thin film transistor and the second thin film transistor are simultaneously turned on.

In an embodiment of the invention, the second thin film transistor is turned on when the frequency of the driving signal is less than the predetermined value and during the closing of the first thin film transistor after charging according to the above.

In an embodiment of the invention, according to the above, when the frequency of the driving signal is less than the predetermined value and during the closing of the first thin film transistor after charging, the number of times the second thin film transistor is turned on is greater than or equal to 1.

In an embodiment of the present invention, according to the above, when the frequency of the driving signal is less than a predetermined value and is turned off after the charging of the first thin film transistor, the period of opening the second thin film transistor accounts for 0.5 or less of the total charging time. .

In an embodiment of the invention, according to the above, when the frequency of the driving signal is less than a predetermined value and is turned off after the charging of the first thin film transistor, the frequency of opening the second thin film transistor is greater than or equal to 10 Hz.

In an embodiment of the invention, the predetermined value is greater than 0.001 Hertz (Hz), as described above.

In an embodiment of the invention, according to the above, the pixels are designed to be light transmissive, totally reflective or semi-transflective.

In an embodiment of the present invention, the active matrix display panel further includes a plurality of pixel structures and a plurality of second scan lines, and each of the second scan lines is electrically connected or fully electrically connected.

The invention provides an active matrix display panel comprising a data line, a pixel, a first scan line and a second scan line. The pixel includes a first thin film transistor, a second thin film transistor, a pixel electrode, and a storage capacitor, wherein a source of the first thin film transistor is electrically connected to the data line, and a source of the second thin film transistor is electrically The drain of the first thin film transistor is electrically connected to the drain of the second thin film transistor, and the storage capacitor is electrically connected to the drain of the second thin film transistor. The first scan line intersects the data line and controls the switching of the first thin film transistor. a second scan line intersecting the data line and controlling a switch of the second thin film transistor.

In an embodiment of the invention, the storage capacitor includes electrical coupling A storage electrode and a portion of the pixel electrode.

Based on the above, according to the active matrix display panel and the driving method of the present invention, when the display panel performs high frequency driving, the second thin film transistor is turned off, so that the compensation capacitor is not charged without burdening the power, and at the same time does not exceed The charging time is limited, or the compensation capacitor does not affect the electrical properties of the pixel; and when the display panel displays a static picture and is driven at a low frequency, the second thin film transistor is turned on to simultaneously charge the pixel and the compensation capacitor. The compensation capacitor is used to supplement the voltage of the pixel, so that the entire storage capacitor size can be increased without increasing the size of the pixel, so that the retention time is extended to achieve the effect of frequency reduction. Therefore, the present invention can break through the on/off ratio characteristics of the thin film transistor while operating at high frequency and low frequency.

The active matrix display panel and the driving method of the invention supplement and drain the leakage current of the pixel by using an additional compensation capacitor. When the active matrix display panel performs low frequency operation, the charging load can be increased without increasing the charging load. Extend the pixel charging time and reduce the flickering of the picture. Therefore, the present invention can be used for active matrix display panels for low frequency driving to reduce power consumption.

The above described features and advantages of the present invention will be more apparent from the following description.

(First Embodiment)

Please refer to FIG. 1 , which is an active moment of the first embodiment of the present invention. Schematic diagram of the layout of the electrical components of the array display panel. The active matrix display panel 100 of the present invention includes a data line 110, a pixel 120, a first scan line 130, a second scan line 160, and a compensation capacitor 150 disposed on a transparent substrate (not shown). The first scan line 130 and the second scan line 160 are respectively disposed at intersection with the data line 110, and the pixel 120 can be designed to be transparent, fully reflective or semi-transparent.

The pixel 120 includes a first thin film transistor 122, a pixel electrode 124, and a storage capacitor 126. The first thin film transistor 122 is disposed above the first scan line 130, the source 1220 is electrically connected to the data line 110, and the drain 1222 is connected to the pixel electrode 124 by a drain metal layer 1224. The capacitor 126 is electrically connected. The storage capacitor 126 is composed of a storage electrode 1260 disposed on the substrate and a partial pixel electrode 124 disposed thereon. A second thin film transistor 140 is disposed above the second scan line 160, and a second scan line 160 is disposed on the substrate between the first scan line 130 and the pixel electrode 124, so the second thin film transistor 140 The source 142 is electrically connected to the drain 1222 of the first thin film transistor 122, the pixel electrode 124, and the storage capacitor 126 by the drain metal layer 1224.

The compensation capacitor 150 is composed of a compensation electrode 152 electrically coupled to each other and a pair of compensation electrodes 154 on the substrate. The compensation electrode 152 and the opposite compensation electrode 154 are located on the pixel electrode 124 and the first scan line. Between 130. The compensation electrode 152 is electrically connected to the drain 144 of the second thin film transistor 140. As can be seen from FIG. 1, the first scan line 130, the second scan line 160, the opposite compensation electrode 154, and the storage electrode 1260 belong to the same patterned metal layer (so-called metal 1). Figure 2 is the initiative according to Figure 1. Schematic diagram of the equivalent circuit of the matrix display panel.

It should be noted that when the data line 110 provides a data signal and simultaneously provides a driving signal to the first scanning line 130 and the second scanning line 160, the first thin film transistor 122 located above the first scanning line 130 at this time. And the second thin film transistor 140 located above the second scan line 160 is turned on, so that the data signal on the data line 110 is loaded into the pixel 120 and the compensation capacitor 150, and the pixel electrode of the voltage pair of the data signal is made. 124. The storage capacitor 126 and the compensation capacitor 150 are charged to reach a predetermined voltage. The circuit architecture of the active matrix display panel 100 is designed such that the voltage of the data signal in the data line 110 can simultaneously charge the pixel 120 and the compensation capacitor 150. Then, when the timing is in the period in which the first thin film transistor 122 is turned off, and the voltage in the pixel 120 drops, adjusting the charge in the compensation capacitor 150 can replenish the pixel 120 in time, avoiding the voltage drop and overspeed and causing the brightness to drop.

Referring to FIG. 3A, it is a timing diagram of the first scan line and the second scan line of the active matrix display panel according to the first embodiment of the present invention under high frequency driving. Therefore, when the display panel 100 is driven at a high frequency (60 Hz or more), since the charge of the pixel 120 is quickly updated and supplemented, there is no need to worry about the result of the leakage, and therefore it is not necessary to supplement the charge in the compensation capacitor 150, Therefore, in the high frequency driving state, the second scan line can be turned off to provide a turn-off voltage to turn off the second thin film transistor 140, so that the voltage of the data signal does not need to charge the compensation capacitor 150, thereby reducing the burden of charging.

Referring to FIG. 3B, it is a timing diagram of the first scan line and the second scan line of the active matrix display panel according to the first embodiment of the present invention under low frequency driving. No. Schematic. However, when the display panel 100 is driven by an extremely low frequency (60 Hz or less, for example, 1 to 3 Hz) to achieve energy saving, when the data line 110 provides a data signal, the first scan line is simultaneously 130 and the second scan line 160 respectively provide a driving signal to turn on the first thin film transistor 122 and the second thin film transistor 140, so that the pixel electrode 124, the storage capacitor 126 and the compensation capacitor 150 of the voltage pair of the data signal are performed. Charging and reaching a predetermined voltage. Thereafter, the first thin film transistor 122 and the second thin film transistor 140 are then turned off.

Since the display panel 100 is driven at an extremely low frequency at this time, the holding time is quite long (1-1/3 second). Since the brightness of the pixel 120 is reduced due to long-term leakage, the second film is opened at least once or more intermittently (including periodically or non-periodically) during the timing when the first thin film transistor 122 is turned off. The transistor 140 is such that the charge stored in the compensation capacitor 150 can continuously replenish the charge lost by the pixel 120, and the brightness of the entire pixel 120 is maintained to a certain extent or more during the holding time, so that the attenuation is not too fast.

According to the design of the active matrix display panel according to the first embodiment of the present invention, when the display panel performs high frequency driving, the second thin film transistor is turned off, so that the compensation capacitor does not have to be charged, so that the charging time is not insufficient; When the display panel displays a static picture and is driven at a low frequency, the second thin film transistor is turned on, and at the same time, the pixels and the compensation capacitor are charged, and the amount of the entire storage capacitor is increased without increasing the entire pixel size. Extend the hold time to achieve the effect of down-clocking. Therefore, the present invention can break through the on/off ratio characteristics of the thin film transistor while simultaneously It can be operated at high frequency and low frequency.

(Second embodiment)

Please refer to FIG. 4 , which is a schematic diagram of an electrical component layout of an active matrix display panel according to a second embodiment of the present invention. The active matrix display panel 100 of the present invention includes a data line 110, a pixel 120, a first scan line 130, a second scan line 160, and a compensation capacitor 150 disposed on a transparent substrate (not shown). The first scan line 130 and the second scan line 160 are respectively disposed at intersection with the data line 110, and the pixel 120 can be designed to be transparent, fully reflective or semi-transparent.

The pixel 120 includes a first thin film transistor 122, a pixel electrode 124, and a storage capacitor 126. The first thin film transistor 122 is disposed above the first scan line 130, the source 1220 is electrically connected to the data line 110, and the first drain 1222 is connected to the pixel by a first drain metal layer 1224. The electrode 124 and the storage capacitor 126 are electrically connected. The storage capacitor 126 is composed of a storage electrode 1260 disposed on the substrate and a partial pixel electrode 124 disposed thereon. A second thin film transistor 140 is disposed above the second scan line 160, and a second scan line 160 is disposed on the substrate between the first scan line 130 and the pixel electrode 124, so the second thin film transistor 140 The source 142 is electrically connected to the first drain 1222, the pixel electrode 124 and the storage capacitor 126 of the first thin film transistor 122 by the first drain metal layer 1224.

The compensation capacitor 150 is composed of a compensation electrode 152 electrically coupled to each other and a pair of compensation electrodes 154 on the substrate. The compensation electrode 152 The counter compensation electrode 154 is located between the pixel electrode 124 and the first scan line 130. One end of the compensation electrode 152 is electrically connected to the drain 144 of the second thin film transistor 140, and the other end thereof is electrically connected to the second drain 1226 of the first thin film transistor 122. As can be seen from FIG. 4, the first scan line 130, the second scan line 160, the opposite compensation electrode 154, and the storage electrode 1260 belong to the same patterned metal layer (so-called metal 1). FIG. 5 is a schematic diagram of an equivalent circuit of the active matrix display panel according to FIG.

In this embodiment, since the compensation electrode 152 of the compensation capacitor 150 is electrically connected to the second drain 1226 of the first thin film transistor 122 and the drain 144 of the second thin film transistor 140, respectively, when the data line 110 When a data signal is provided and a driving signal is supplied to the first scanning line 130 (the first thin film transistor 122 is turned on), a driving signal is not necessarily provided to the second scanning line 160 (the second thin film transistor 140 is turned on). The data signal on the data line 110 can be loaded into the pixel 120 and the compensation capacitor 150, and the voltage of the data signal is matched to the pixel electrode 124, the storage capacitor 126 and the compensation capacitor 150, and according to the design of the thin film transistor. The pixel electrode 124 and the storage capacitor 126 reach a predetermined voltage, and the compensation capacitor 150 does not have to reach a predetermined voltage during the charging time. Similarly, the design of the second thin film transistor 140 is such that after the voltage of the data signal is charged, when the timing is in the period in which the first thin film transistor 122 is turned off, and the voltage in the pixel 120 drops, the compensation capacitor 150 can be adjusted. The charge can be added to the pixel 120 in time to avoid the voltage drop and the brightness is reduced. Because in the present embodiment, the second thin film transistor 140 does not play the role of charging the compensation capacitor 150, the line width of the second scan line 160 is added thereto. The burden of turning on the voltage signal can be appropriately reduced by design.

The difference between the present embodiment and the first embodiment is that the compensation electrode 152 of the compensation capacitor 150 and the second drain 1226 of the first thin film transistor 122 and the drain 144 of the second thin film transistor 140 are respectively included in this embodiment. The electrical connection is made, and in the first embodiment, the compensation electrode 152 is only electrically connected to the drain 144 of the second thin film transistor 140. Therefore, in comparison with the high-frequency driving, the compensation electrode 152 of the first embodiment is a floating electrode because the second thin film transistor 140 is always in a closed state, so that the potential is opposite to the panel under different driving conditions. The impact of quality is difficult to control and predict. In the second embodiment, regardless of the frequency at which the display panel is driven, the first scan line 130 is turned on, and the compensation electrode 152 is charged to a voltage close to the data line signal, and the display quality is turned on. The second scanning line 160 is therefore relatively stable in electrical control of the second embodiment.

Referring to FIG. 6A, it is a timing diagram of the first scan line and the second scan line of the active matrix display panel according to the second embodiment of the present invention under high frequency driving. According to the above, when the display panel 100 performs high frequency driving (60 Hz or more), since the electric charge of the pixel 120 is quickly updated and replenished, there is no fear of leakage, and the pixel electrode is designed according to the design of the thin film transistor. The compensation capacitor 150 may not need to reach a predetermined voltage during the charging time, but in the high frequency driving state, a second closing voltage may be applied to the second scan line to turn off the second thin film transistor 140, so that the charge stored in the compensation capacitor 150 is not Will enter the pixel 120 for charging.

Referring to FIG. 6B, it is a time when the active matrix display panel of the second embodiment of the present invention is driven by a low frequency and the first scan line and the second scan line are Schematic diagram of the sequence signal. When the display panel 100 is driven by an extremely low frequency (60 Hz or less, for example, 1 to 3 Hz) to achieve energy saving, when the data line 110 provides a data signal, the first scan line 130 is simultaneously applied. And the second scan line 160 respectively provides a driving signal to turn on the first thin film transistor 122 and the second thin film transistor 140. According to the thin film transistor, the pixel electrode 124 and the storage capacitor 126 of the voltage pair of the data signal are designed. The compensation capacitor 150 is charged and reaches a predetermined voltage when driven at a low frequency. Thereafter, the first thin film transistor 122 and the second thin film transistor 140 are then turned off. In another embodiment of the invention, the frequency of the extreme low frequency drive is, for example, less than 0.001 Hz.

Since the display panel 100 is driven at an extremely low frequency at this time, the holding time is quite long (1-1/3 second). Since the brightness of the pixel 120 is reduced due to long-term leakage, the second film is opened at least once or more intermittently (including periodically or non-periodically) during the timing when the first thin film transistor 122 is turned off. The transistor 140 is such that the charge stored in the compensation capacitor 150 can continuously replenish the charge lost by the pixel 120, and the brightness of the entire pixel 120 is maintained to a certain extent or more during the holding time, so that the attenuation is not excessively fast.

According to the design of the active matrix display panel of the second embodiment of the present invention, when the display panel performs high frequency driving, the second thin film transistor is turned off, so that the compensation capacitor does not affect the electrical properties of the pixel; and when the display panel displays When the static picture is driven at a low frequency, whether the second thin film transistor is turned on or off, the pixel and the compensation capacitor can be simultaneously charged while the signal is being updated, and the second pixel is passed through the first thin film transistor 122. Pole 1226 The design can extend the hold time to achieve the effect of frequency reduction without affecting the high-frequency operation charging time limit. Therefore, the present invention can break through the on/off ratio characteristics of the thin film transistor while operating at high frequency and low frequency.

(Third embodiment)

Please refer to FIG. 7 , which is a schematic diagram of an electrical component layout of an active matrix display panel according to a third embodiment of the present invention. FIG. 8 is a schematic diagram of an equivalent circuit of the active matrix display panel according to FIG. The active matrix display panel 100 of the present invention comprises a data line 110, a pixel 120, a first scan line 130 and a second scan line 160 disposed on a transparent substrate (not shown), wherein the first scan The line 130 and the second scan line 160 are respectively disposed to intersect the data line 110, and the pixel 120 can be designed to be a light transmissive, a total reflection type or a semi-transmissive type.

The pixel 120 includes a first thin film transistor 122, a second thin film transistor 140, a pixel electrode 124, and a storage capacitor 126. The first thin film transistor 122 is disposed above the first scan line 130, the source 1220 is electrically connected to the data line 160, and the drain 1222 is connected to the second thin film transistor by a metal layer (not labeled). The source 142 of 140 is electrically connected. The second thin film transistor 140 is disposed above the second scan line 160, and the second scan line 160 is disposed on the substrate between the first scan line 130 and the pixel electrode 124, and the drain of the second thin film transistor 140 The 144 is electrically connected to the pixel electrode 124 and the storage capacitor 126 by a metal layer (not labeled). The storage capacitor 126 is a storage electrode 1260 disposed on the substrate and spanned thereon It is composed of a partial pixel electrode 124 electrically coupled thereto.

In this embodiment, the first thin film transistor 122 is connected in series with the second thin film transistor 140, and the first scan line 130 and the second scan line 160 are respectively operated at different negative voltages when the channel is closed, due to the film. The transistor has the lowest leakage current at a specific voltage, so that the series connection of the first thin film transistor 122 and the second thin film transistor 140 can improve the element's equivalent on/off ratio.

In summary, the active matrix display panel and the driving method of the present invention use an additional compensation capacitor to supplement the leakage current of the pixel and charge sharing. When the active matrix display panel performs low frequency operation, it can be Increase the charging load, extend the pixel charging time, and reduce the flickering of the picture. Therefore, the present invention can be used for active matrix display panels for low frequency driving to reduce power consumption.

Furthermore, according to the active matrix display panel and the driving method of the present invention, when the display panel performs high frequency driving, the second thin film transistor is turned off, so that the compensation capacitor is not charged without burdening the charging, or The compensation capacitor does not affect the electrical properties of the pixel; when the display panel displays a static picture and is driven at a low frequency, the second thin film transistor is turned on to simultaneously charge the pixel and the compensation capacitor, and the pixel is supplemented by the compensation capacitor. The voltage can increase the amount of the entire storage capacitor without increasing the size of the entire pixel, which can lengthen the charging time and reduce the power load during charging.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art does not deviate. In the spirit and scope of the present invention, the scope of protection of the present invention is defined by the scope of the appended claims.

100‧‧‧Active Matrix Display Panel

110‧‧‧Information line

120‧‧‧ pixels

122‧‧‧First film transistor

1220‧‧‧First film transistor source

1222‧‧‧First thin film transistor drain, first thin film transistor first drain

1224‧‧‧汲metal layer, first drain metal layer

1226‧‧‧First film transistor second bungee

126‧‧‧ Storage Capacitor

1260‧‧‧ Storage electrode

130‧‧‧First scan line

140‧‧‧Second thin film transistor

142‧‧‧Second thin film transistor source

144‧‧‧Second thin film transistor bungee

150‧‧‧Compensation capacitor

152‧‧‧Compensation electrode

154‧‧‧ opposite compensation electrode

160‧‧‧Second scan line

1 is a schematic diagram showing the layout of electrical components of an active matrix display panel according to a first embodiment of the present invention.

2 is a schematic diagram of an equivalent circuit of the active matrix display panel according to FIG.

FIG. 3A is a timing diagram of the first scan line and the second scan line of the active matrix display panel according to the first embodiment of the present invention.

FIG. 3B is a timing diagram of the first scan line and the second scan line of the active matrix display panel according to the first embodiment of the present invention.

4 is a schematic diagram showing the layout of electrical components of an active matrix display panel according to a second embodiment of the present invention.

FIG. 5 is a schematic diagram of an equivalent circuit of the active matrix display panel according to FIG.

FIG. 6A is a timing diagram of the first scan line and the second scan line of the active matrix display panel according to the second embodiment of the present invention.

6B is a timing diagram of the first scan line and the second scan line of the active matrix display panel of the second embodiment of the present invention under low frequency driving.

FIG. 7 is a schematic diagram showing the layout of electrical components of an active matrix display panel according to a third embodiment of the present invention.

8 is an equivalent circuit diagram of the active matrix display panel according to FIG. intention.

100‧‧‧Active Matrix Display Panel

110‧‧‧Information line

120‧‧‧ pixels

122‧‧‧First film transistor

1220‧‧‧First film transistor source

1222‧‧‧First thin film transistor bungee

1224‧‧‧汲metal layer

126‧‧‧ Storage Capacitor

1260‧‧‧ Storage electrode

130‧‧‧First scan line

140‧‧‧Second thin film transistor

142‧‧‧Second thin film transistor source

144‧‧‧Second thin film transistor bungee

150‧‧‧Compensation capacitor

152‧‧‧Compensation electrode

154‧‧‧ opposite compensation electrode

160‧‧‧Second scan line

Claims (11)

An active matrix display panel includes: a data line; a pixel comprising: a first thin film transistor, the source is electrically connected to the data line; and a pixel electrode electrically connected to the first thin film transistor a first drain; and a storage capacitor electrically connected to the first drain of the first thin film transistor, the storage capacitor comprising: a storage electrode; and a portion of the pixel electrode, a portion of the pixel electrode and the storage Electrode is electrically coupled; a first scan line intersects the data line and controls a switch of the first thin film transistor; and a second thin film transistor whose source is electrically connected to the first of the first thin film transistor a compensation capacitor includes: a compensation electrode; and a pair of compensation electrodes electrically coupled to the compensation electrode, the compensation electrode being electrically connected to the drain of the second thin film transistor, and The compensation electrode and the opposite compensation electrode are located between the pixel electrode and the first scan line; and a second scan line intersects the data line, and control the switch of the second thin film transistor, wherein the the first Scanning line, the second scan line, the pair The compensation electrode and the storage electrode belong to the same patterned metal layer. The active matrix display panel of claim 1, wherein the first thin film transistor further comprises a first drain metal layer, wherein the first drain metal layer is electrically connected to the pixel electrode and The source of the second thin film transistor. The active matrix display panel of claim 1, wherein the compensation electrode is electrically connected to the second drain of the first thin film transistor. The active matrix display panel of claim 3, wherein the first thin film transistor further comprises a first drain metal layer, wherein the first drain metal layer is electrically connected to the pixel electrode and The source of the second thin film transistor. An active matrix display panel driving method according to the first aspect of the patent application, the driving method of the active matrix display panel includes: providing a data signal to the data line; The first scan line provides a driving signal, wherein when the frequency of the driving signal is greater than or equal to a predetermined value, the first thin film transistor is turned on and the second thin film transistor is turned off, when the frequency of the driving signal is less than the predetermined value. Opening the first thin film transistor and the second thin film transistor simultaneously. The driving method of the active matrix display panel according to claim 5, wherein the second film is opened when the frequency of the driving signal is less than the predetermined value and during the closing of the first thin film transistor after charging Transistor. The driving method of the active matrix display panel according to claim 6, wherein the second thin film is turned on when the frequency of the driving signal is less than the predetermined value and is turned off after the first thin film transistor is charged. The number of crystals is greater than or equal to 1. The driving method of the active matrix display panel according to claim 7, wherein the second thin film is turned on when the frequency of the driving signal is less than the predetermined value and is turned off after the first thin film transistor is charged. The ratio of the period of the crystal to the total charging time is less than or equal to 0.5. The driving method of the active matrix display panel according to claim 7, wherein the second thin film is turned on when the frequency of the driving signal is less than the predetermined value and is turned off after the first thin film transistor is charged. The frequency of the crystal is greater than or equal to 10 Hz. The driving method of the active matrix display panel according to claim 9, wherein the predetermined value is greater than 0.001 Hertz (Hz). The method for driving an active matrix display panel according to claim 9, wherein the active matrix display panel further comprises a plurality of pixel structures and a plurality of second scan lines, and each of the second scan lines is electrically connected. Or all electrical connections.