CN107564488B - Display panel and display device - Google Patents
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- CN107564488B CN107564488B CN201710898742.4A CN201710898742A CN107564488B CN 107564488 B CN107564488 B CN 107564488B CN 201710898742 A CN201710898742 A CN 201710898742A CN 107564488 B CN107564488 B CN 107564488B
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- 238000005401 electroluminescence Methods 0.000 description 4
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- 238000000034 method Methods 0.000 description 2
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- 238000004020 luminiscence type Methods 0.000 description 1
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Abstract
The invention discloses a display panel and a display device.A release control module is arranged to output a starting control signal to each conduction control module when the potential of a signal at a release control signal end changes, namely when the display panel is in a state of lightening to a message screen. By arranging the conduction control module and the charge release module in each pixel unit, when the conduction control module receives a starting control signal, the driving electrode and the charge release module can be conducted so as to output the charge on the driving electrode to the charge release module, and the charge on the driving electrode is released through the charge release module. When the display panel is in a lighting state, the potential of the signal at the release control signal end does not change, so that the release control module does not output the opening control signal. Therefore, when the display panel enters the information screen, the residual charges on the driving electrodes in the pixel units are released, so that the problem of screen flashing when the display panel is lightened due to direct current bias can be avoided.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
At present, electronic display products such as mobile phones and tablet computers need to light and screen a display panel in the using process. This is typically done by charging the pixels in the display panel when the display panel is lit to display the image picture. However, when the display panel enters the information screen, the switch transistor in the pixel for controlling charging is in an off state, thereby causing a part of the charges for display to remain in the pixel. The residual charges can cause direct current bias due to long-term existence, and when the display panel is lighted again, the display has the problem of screen flashing due to the action of the direct current bias.
Disclosure of Invention
Embodiments of the present invention provide a display panel and a display device, so as to solve a problem of a screen flashing occurring when a display panel is turned on due to a dc offset in the prior art.
Accordingly, an embodiment of the present invention provides a display panel, including: the display panel comprises a plurality of pixel units, a plurality of driving electrodes and a plurality of control circuits, wherein each pixel unit comprises a driving electrode for driving the display panel to emit light; the display panel further includes: the charge releasing module is positioned in each pixel unit;
the first end of the release control module is connected with a release control signal end, the second end of the release control module is connected with an input reference signal end, and the third end of the release control module is connected with the first end of each conduction control module; the release control module is used for outputting a starting control signal to each conduction control module when the potential of a signal at the release control signal end changes;
for each pixel unit, a second end of the conduction control module is connected with the driving electrode, a third end of the conduction control module is connected with a first end of the charge release module, and a second end of the charge release module is connected with a ground end; the conduction control module is used for outputting the electric charges on the driving electrodes connected to the first end of the electric charge releasing module under the control of a starting control signal; the charge releasing module is used for outputting the charge output by the conduction control module to the grounding terminal.
Optionally, in the display panel provided in the embodiment of the present invention, the release control module includes: an edge D flip-flop;
the control end of the edge D trigger is connected with the release control signal end, the input end of the edge D trigger is connected with the input reference signal end, the positive phase output end of the edge D trigger is connected with the first end of each conduction control module, or the negative phase output end of the edge D trigger is connected with the first end of each conduction control module.
Optionally, in the display panel provided in the embodiment of the present invention, when the non-inverting output terminal of the edge D flip-flop is connected to the first terminal of each of the conduction control modules, the conduction control module includes: a first switching transistor of N-type;
the grid electrode of the first switch transistor is connected with the positive phase output end of the edge D trigger, the source electrode of the first switch transistor is connected with the corresponding driving electrode, and the drain electrode of the first switch transistor is connected with the first end of the corresponding charge releasing module.
Optionally, in the display panel provided in the embodiment of the present invention, when the negative phase output terminal of the edge D flip-flop is connected to the first terminal of each of the conduction control modules, the conduction control module includes: a second switching transistor of P-type;
the grid electrode of the second switch transistor is connected with the negative phase output end of the edge D trigger, the source electrode of the second switch transistor is connected with the corresponding driving electrode, and the drain electrode of the second switch transistor is connected with the first end of the corresponding charge releasing module.
Optionally, in the display panel provided in the embodiment of the present invention, the release control module includes: an edge D flip-flop;
the control end of the edge D trigger is connected with the release control signal end, the input end of the edge D trigger is connected with the input reference signal end, the positive phase output end of the edge D trigger is connected with the first end of the partial conduction control module, and the negative phase output end of the edge D trigger is connected with the first end of the rest partial conduction control module.
Optionally, in the display panel provided in the embodiment of the present invention, the conduction control module connected to the non-inverting output terminal of the edge D flip-flop includes: a third switching transistor of N-type; the grid electrode of the third switching transistor is connected with the positive phase output end of the edge D trigger, the source electrode of the third switching transistor is connected with the driving electrode, and the drain electrode of the third switching transistor is connected with the first end of the corresponding charge releasing module;
the conduction control module connected with the negative phase output end of the edge D trigger comprises: a fourth switching transistor of P-type; the grid electrode of the fourth switching transistor is connected with the negative phase output end of the edge D trigger, the source electrode of the fourth switching transistor is connected with the driving electrode, and the drain electrode of the fourth switching transistor is connected with the first end of the corresponding charge release module.
Optionally, in the display panel provided in the embodiment of the present invention, the charge discharging module includes: a fifth switching transistor of N type and a sixth switching transistor of P type;
the grid electrode and the source electrode of the fifth switching transistor are both connected with the third end of the conduction control module, and the drain electrode of the fifth switching transistor is connected with the grounding end;
and the grid electrode and the source electrode of the sixth switching transistor are both connected with the third end of the conduction control module, and the drain electrode of the sixth switching transistor is connected with the grounding end.
Optionally, in the display panel provided in the embodiment of the present invention, the display panel further includes an amplifier located in each of the pixel units; wherein, for each pixel unit, the third terminal of the conduction control module is connected with the first terminal of the charge releasing module through the amplifier.
Optionally, in the display panel provided in the embodiment of the present invention, the display panel is a liquid crystal display panel, and the driving electrode is a pixel electrode; or,
the display panel is an electroluminescent display panel, and the driving electrode is an anode of an electroluminescent device.
Correspondingly, the embodiment of the invention also provides a display device which comprises any one of the display panels provided by the embodiment of the invention.
The invention has the following beneficial effects:
according to the display panel and the display device provided by the embodiment of the invention, the release control module is arranged, so that the starting control signal can be output to each conducting control module when the potential of the signal at the release control signal end changes, namely when the display panel is in a state of being lightened to a message screen. By arranging the conduction control module and the charge release module in each pixel unit, when the conduction control module receives a starting control signal, the driving electrode and the charge release module can be conducted, so that the charge on the driving electrode is output to the charge release module, and the charge on the driving electrode is released through the charge release module. When the display panel is in a lighting state, the potential of the signal at the release control signal end does not change, so that the release control module does not output the opening control signal. Therefore, a normal display function can be realized, and when the display panel enters a screen, residual charges on the driving electrodes in the pixel units can be released, so that the problem of screen flashing caused by direct current bias when the display panel is lightened can be avoided.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2a is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2b is a second schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2c is a third schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a timing diagram provided in accordance with an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, specific embodiments of a display panel and a display device according to an embodiment of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments described below are only for illustrating and explaining the present invention and are not to be used for limiting the present invention. And the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The shapes and sizes of the figures in the drawings do not reflect the true scale of the display panel and are intended to be illustrative only of the present invention.
An embodiment of the present invention provides a display panel, as shown in fig. 1, including: a plurality of pixel units 100, each pixel unit 100 including a driving electrode 110 for driving the display panel to emit light; the display panel further includes: a release control module 200, and a conduction control module 120 and a charge release module 130 located in each pixel unit 100;
a first end of the release control module 200 is connected to a release control signal end VCP, a second end of the release control module 200 is connected to an input reference signal end VD, and a third end of the release control module 200 is connected to a first end of each conduction control module 120; the release control module 200 is configured to output a start control signal to each conduction control module 120 when the potential of the signal at the release control signal terminal VCP changes;
for each pixel unit 100, the second terminal of the conduction control module 120 is connected to the driving electrode 110, the third terminal of the conduction control module 120 is connected to the first terminal of the charge discharging module 130, and the second terminal of the charge discharging module 130 is connected to the ground GND; the conduction control module 120 is configured to output the electric charge on the connected driving electrode 110 to the first end of the charge discharging module 130 under the control of the start control signal; the charge discharging module 130 is configured to output the charge output by the turn-on control module 120 to the ground GND.
According to the display panel provided by the embodiment of the invention, the release control module is arranged, so that the on control signal can be output to each conducting control module when the potential of the signal at the release control signal end changes, namely when the display panel is in a state from being lightened to a screen. By arranging the conduction control module and the charge release module in each pixel unit, when the conduction control module receives a starting control signal, the driving electrode and the charge release module can be conducted, so that the charge on the driving electrode is output to the charge release module, and the charge on the driving electrode is released through the charge release module. When the display panel is in a lighting state, the potential of the signal at the release control signal end does not change, so that the release control module does not output the opening control signal. Therefore, the display panel provided by the embodiment of the invention can realize a normal display function when being lighted, and can release charges remained on the driving electrode in the pixel unit when entering the information screen, so that the problem of screen flashing when the display panel is lighted due to direct current bias can be avoided.
In specific implementation, when the potential of the signal at the control signal end is released to change, the corresponding display panel is in a state of being lighted to a message screen.
The liquid crystal display panel generally includes an opposite substrate and an array substrate disposed opposite to each other, and a liquid crystal layer disposed between the opposite substrate and the array substrate. And a thin film transistor and a pixel electrode connected to the thin film transistor are generally disposed in the pixel unit on the array substrate. The liquid crystal display panel supplies voltage to the pixel electrode by opening the thin film transistor so as to charge the pixel electrode, and then forms an electric field between the pixel electrode and the common voltage on the common electrode so as to drive liquid crystal molecules to deflect and control the emission or shielding of light rays, thereby realizing the display function. When the liquid crystal display panel turns off, the thin film transistor is in an off state, so that partial charges are left on the pixel electrode, and in order to avoid the charges left on the pixel electrode when the liquid crystal display panel turns off, in a specific implementation, the display panel provided by the embodiment of the invention can be a liquid crystal display panel, and the driving electrode can be a pixel electrode. Therefore, the electric charges can be released for the pixel electrode through the releasing control module, the conducting control module and the electric charge releasing module.
The electroluminescent display panel has attracted attention due to its advantages of self-luminescence and wide viewing angle. In an electroluminescent display panel, an electroluminescent device and a pixel control circuit for controlling the electroluminescent device to emit light are generally provided in a pixel unit. In general, an electroluminescent device includes an anode, an electroluminescent layer, and a cathode, which are stacked. The pixel control circuit supplies a voltage to the anode electrode to inject holes, and at the same time, injects electrons by applying a voltage to the cathode electrode, and emits light by recombination of the holes and the electrons in the electroluminescent layer, thereby realizing a display function. However, when the electroluminescence display panel turns off, the transistor in the pixel control circuit is turned off, so that a part of charges may remain on the anode, and in order to avoid remaining charges on the anode when the electroluminescence display panel turns off, in a specific implementation, the display panel provided in the embodiment of the present invention may be an electroluminescence display panel, and the driving electrode may be an anode of an electroluminescence device. Thus, the electric charge can be released for the anode through the releasing control module, the conducting control module and the electric charge releasing module.
The present invention will be described in detail with reference to specific examples. It should be noted that the present embodiment is intended to better explain the present invention, but not to limit the present invention.
Specifically, in the display panel provided in the embodiment of the present invention, as shown in fig. 2a to 2c, the release control module 200 may include: an edge D flip-flop 210; the control end CP of the edge D flip-flop 210 is connected to the release control signal end VCP, and the input end D of the edge D flip-flop 210 is connected to the input reference signal end VD. As shown in fig. 2a, the positive phase output terminal Q of the edge D flip-flop 210 is connected to the first terminal of each conduction control module 120, and the negative phase output terminal Q is connected to the first terminal of each conduction control module 120
And (4) floating. Alternatively, as shown in FIG. 2b, the negative output of edge D flip-flop 210
Connected to the first terminal of each conduction control module 120, and the positive phase output terminal Q is floating. Alternatively, as shown in fig. 2c, the positive phase output terminal Q of the edge D flip-flop 210 is connected to the first terminal of the partial conduction control module 120, and the negative phase output terminal of the edge D flip-flop 210
Connected to a first end of the remaining portion conduction control module 120.
In a specific implementation, in the display panel provided in the embodiment of the present invention, the edge D flip-flop may be a falling edge flip-flop. And at the moment, the edge D trigger triggers at the falling edge when the signal of the control signal releasing end is changed from high potential to low potential, so that the positive phase output end of the edge D trigger outputs a high-potential starting control signal, and the negative phase output end outputs a low-potential starting control signal. Before the signal of the release control signal end is changed from high potential to low potential, the positive phase output end of the edge D trigger outputs a low potential signal, and the negative phase output end outputs a high potential signal. The signal of the input reference signal end is a high potential signal at least before the signal of the release control signal end is changed from high potential to low potential, and the falling edge of the signal of the release control signal end when the signal is changed from high potential to low potential corresponds to the state that the display panel is lightened to a screen. In specific implementation, the specific structure of the edge D flip-flop may be substantially the same as that in the prior art, and it can be understood by those skilled in the art, and will not be described herein again.
In order to save signal lines and simplify wiring difficulty, in the display panel provided in the embodiment of the present invention, the signal at the release control signal end may be the VGH signal.
In a specific implementation, when the non-inverting output terminal Q of the edge D flip-flop 210 is connected to the first terminal of each conduction control module 120, as shown in fig. 2a, in the display panel provided in the embodiment of the present invention, the conduction control module 120 may include: a first switching transistor M1 of N type; the gate of the first switching transistor M1 is connected to the non-inverting output Q of the edge D flip-flop 210, the source of the first switching transistor M1 is connected to the corresponding driving electrode 110, and the drain of the first switching transistor M1 is connected to the first end of the corresponding charge discharging module 130. Also, the first switching transistor M1 is in a conducting state under the control of the on control signal of the high potential output from the non-inverting output terminal Q of the edge D flip-flop 210, and can conduct the driving electrode 110 and the charge discharging module 130 to output the charge on the driving electrode 110 to the charge discharging module 130.
In one embodiment, the negative output of the edge D flip-flop 210
When connected to the first end of each conduction control module 120, in the display panel provided in the embodiment of the present invention, as shown in fig. 2b, the conduction control module 120 may include: p-type second switching transistor M2; wherein the gate of the second switching transistor M2 and the negative phase output terminal of the edge D flip-flop 210
To each other, the source of the second switching transistor M2 is connected to the corresponding driving electrode 110, and the drain of the second switching transistor M2 is connected to the first terminal of the corresponding charge discharging module 130. And, the second switching transistor M2 is on the negative phase output of the edge D flip-flop 210
The output low-level on control signal is in a conducting state, so that the driving electrode 110 and the charge discharging module 130 can be conducted, and the charge on the driving electrode 110 can be output to the charge discharging module 130.
In specific implementation, the positive phase output terminal Q of the edge D flip-flop 210 is connected to the first terminal of the partial conduction control module 120, and the negative phase output terminal of the edge D flip-flop 210
When connected to the first end of the remaining conduction control module 120, in the display panel provided in the embodiment of the present invention, as shown in fig. 2c, the conduction control module 120 connected to the non-inverting output terminal Q of the edge D flip-flop 210 may include: a third switching transistor M3 of N type; the gate of the third switching transistor M3 is connected to the non-inverting output Q of the edge D flip-flop 210, the source of the third switching transistor M3 is connected to the driving electrode 110, and the drain of the third switching transistor M3 is connected to the first end of the corresponding charge discharging module 130. Also, the third switching transistor M3 is in a conducting state under the control of the on control signal of the high potential output from the non-inverting output terminal Q of the edge D flip-flop 210, and can conduct the driving electrode 110 with the charge discharging module 130 to output the charge on the driving electrode 110 to the charge discharging module 130.
In the display panel according to the embodiment of the present invention, as shown in fig. 2c, the negative phase output terminal of the edge D flip-flop 210 is connected to the negative phase output terminal
The connected conduction control module 120 may include: a fourth switching transistor M4 of P-type; wherein the gate of the fourth switching transistor M4 and the negative phase output terminal of the edge D flip-flop 210
To the driving electrode 110, a source of the fourth switching transistor M4 is connected, and a drain of the fourth switching transistor M4 is connected to the first terminal of the corresponding charge discharging module 130. And, the fourth switching transistor M4 is at the negative phase output of the edge D flip-flop 210
The output low-level on control signal is in a conducting state, so that the driving electrode 110 and the charge discharging module 130 can be conducted, and the charge on the driving electrode 110 can be output to the charge discharging module 130.
In the display panel provided by the embodiment of the present invention, as shown in fig. 2a to 2c, the charge discharging module 130 may include: an N-type fifth switching transistor M5 and a P-type sixth switching transistor M6. The gate and the source of the fifth switching transistor M5 are both connected to the third terminal of the on-state control module 120, and the drain of the fifth switching transistor M5 is connected to the ground GND. The gate and the source of the sixth switching transistor M6 are both connected to the third terminal of the turn-on control module 120, and the drain of the sixth switching transistor M6 is connected to the ground GND. When the charge on the driving electrode 110 is a positive charge, the fifth switching transistor M5 can be made to be in a conducting state to discharge the positive charge on the driving electrode 110. When the charge on the driving electrode 110 is negative, the sixth switching transistor M6 can be made to be in a conducting state to release the negative charge on the driving electrode 110.
In order to amplify the charges input to the charge discharging module 130, in a specific implementation, in the display panel provided in the embodiment of the present invention, as shown in fig. 2a to 2b, the display panel may further include an amplifier 140 located in each pixel unit 100; wherein, for each pixel unit 100, the third terminal of the conduction control module 120 is connected to the first terminal of the charge discharging module 130 through the amplifier 140; the input terminal of the amplifier 140 is connected to the third terminal of the conduction control module 120, and the output terminal of the amplifier 140 is connected to the first terminal of the charge discharging module 130. In this way, the charge on the driving electrode 110 output by the turn-on control module 120 can be amplified and then output to the first end of the charge discharging module 130, so as to control the fifth switching transistor M5 or the sixth switching transistor M6 in the charge discharging module 130 to be turned on rapidly to discharge the charge as rapidly as possible.
The above is merely to illustrate the specific structure of each module in the display panel provided in the embodiment of the present invention, and in the implementation, the specific structure of each module is not limited to the structure provided in the embodiment of the present invention, and may be other structures known to those skilled in the art, and is not limited herein.
Preferably, in the display panel provided by the embodiment of the present invention, the switching transistors are transistors generally made of the same material. In the specific implementation, the N-type switch transistor is turned on under the action of high potential and is turned off under the action of low potential; the P-type switching transistor is turned off under the action of a high potential and turned on under the action of a low potential.
It should be noted that the switching Transistor mentioned in the above embodiments of the present invention may be a Thin Film Transistor (TFT) or a Metal oxide semiconductor field effect Transistor (MOS), and is not limited herein. In specific implementation, the source and drain of these transistors may be different according to the type of the transistor and the input signal, and their functions may be interchanged and are not specifically distinguished herein.
The following describes the operation process of the display panel provided by the embodiment of the present invention with reference to a timing chart, taking the display panel shown in fig. 2a as an example. As shown in fig. 3, the timing chart mainly selects two phases, i.e., the lighting phase T1 and the blanking phase T2 in the timing chart shown in fig. 3.
In the lighting period T1, the driving electrodes 110 in the display panel are charged, and the display function is realized. Since the signal at the release control signal terminal VCP is always a high signal at this stage, the non-inverting output terminal Q of the edge D flip-flop 210 outputs a low signal to control the N-type first switching transistor M1 to be turned off. Therefore, no charge release is performed at this stage to ensure the normal display function of the display panel.
In the screen turning-off period T2, the display panel stops the display function. Since the signal of the release control signal terminal VCP changes from the high potential to the low potential in the lighting period T1 in this stage, that is, the signal of the release control signal terminal VCP has a falling edge, the non-inverting output terminal Q of the edge D flip-flop 210 outputs a high-potential turn-on control signal to control the N-type first switching transistor M1 to be turned on, and the charge on the driving electrode 110 is input to the amplifier 140, and the input charge is amplified by the amplifier 140 and then output to the charge releasing module 130. When the charge is positive, the fifth switching transistor M5 can be controlled to be turned on to rapidly discharge the positive charge on the driving electrode 110. When the charge is negative, the sixth switching transistor M6 can be controlled to turn on to rapidly release the positive charge on the driving electrode 110, so as to achieve rapid and complete release of the positive and negative charges.
Based on the same inventive concept, the embodiment of the invention further provides a display device, which comprises any one of the display panels provided by the embodiment of the invention. The display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. Other essential components of the display device are understood by those skilled in the art, and are not described herein or should not be construed as limiting the invention. The display device can be implemented by referring to the above embodiments of the display panel, and repeated descriptions are omitted.
According to the display panel and the display device provided by the embodiment of the invention, the release control module is arranged, so that the starting control signal can be output to each conducting control module when the potential of the signal at the release control signal end changes, namely when the display panel is in a state of being lightened to a message screen. By arranging the conduction control module and the charge release module in each pixel unit, when the conduction control module receives a starting control signal, the driving electrode and the charge release module can be conducted, so that the charge on the driving electrode is output to the charge release module, and the charge on the driving electrode is released through the charge release module. When the display panel is in a lighting state, the potential of the signal at the release control signal end does not change, so that the release control module does not output the opening control signal. Therefore, a normal display function can be realized, and when the display panel enters a screen, residual charges on the driving electrodes in the pixel units can be released, so that the problem of screen flashing caused by direct current bias when the display panel is lightened can be avoided.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A display panel, comprising: the display panel comprises a plurality of pixel units, a plurality of driving electrodes and a plurality of control circuits, wherein each pixel unit comprises a driving electrode for driving the display panel to emit light; characterized in that, the display panel still includes: the charge releasing module is positioned in each pixel unit;
the first end of the release control module is connected with a release control signal end, the second end of the release control module is connected with an input reference signal end, and the third end of the release control module is connected with the first end of each conduction control module; the release control module is used for outputting a starting control signal to each conduction control module when the potential of a signal at the release control signal end changes;
for each pixel unit, a second end of the conduction control module is connected with the driving electrode, a third end of the conduction control module is connected with a first end of the charge release module, and a second end of the charge release module is connected with a ground end; the conduction control module is used for outputting the electric charges on the driving electrodes connected to the first end of the electric charge releasing module under the control of a starting control signal; the charge releasing module is used for outputting the charge output by the conduction control module to the grounding terminal;
the charge discharging module includes: a fifth switching transistor of N type and a sixth switching transistor of P type;
the grid electrode and the source electrode of the fifth switching transistor are both connected with the third end of the conduction control module, and the drain electrode of the fifth switching transistor is connected with the grounding end;
and the grid electrode and the source electrode of the sixth switching transistor are both connected with the third end of the conduction control module, and the drain electrode of the sixth switching transistor is connected with the grounding end.
2. The display panel of claim 1, wherein the release control module comprises: an edge D flip-flop;
the control end of the edge D trigger is connected with the release control signal end, the input end of the edge D trigger is connected with the input reference signal end, the positive phase output end of the edge D trigger is connected with the first end of each conduction control module, or the negative phase output end of the edge D trigger is connected with the first end of each conduction control module.
3. The display panel of claim 2, wherein when the non-inverting output terminal of the edge D flip-flop is connected to the first terminal of each of the conduction control blocks, the conduction control blocks comprise: a first switching transistor of N-type;
the grid electrode of the first switch transistor is connected with the positive phase output end of the edge D trigger, the source electrode of the first switch transistor is connected with the corresponding driving electrode, and the drain electrode of the first switch transistor is connected with the first end of the corresponding charge releasing module.
4. The display panel of claim 2, wherein when the negative phase output terminal of the edge D flip-flop is connected to the first terminal of each of the conduction control blocks, the conduction control blocks comprise: a second switching transistor of P-type;
the grid electrode of the second switch transistor is connected with the negative phase output end of the edge D trigger, the source electrode of the second switch transistor is connected with the corresponding driving electrode, and the drain electrode of the second switch transistor is connected with the first end of the corresponding charge releasing module.
5. The display panel of claim 1, wherein the release control module comprises: an edge D flip-flop;
the control end of the edge D trigger is connected with the release control signal end, the input end of the edge D trigger is connected with the input reference signal end, the positive phase output end of the edge D trigger is connected with the first end of the partial conduction control module, and the negative phase output end of the edge D trigger is connected with the first end of the rest partial conduction control module.
6. The display panel of claim 5, wherein the turn-on control module connected to the non-inverting output terminal of the edge D flip-flop comprises: a third switching transistor of N-type; the grid electrode of the third switching transistor is connected with the positive phase output end of the edge D trigger, the source electrode of the third switching transistor is connected with the driving electrode, and the drain electrode of the third switching transistor is connected with the first end of the corresponding charge releasing module;
the conduction control module connected with the negative phase output end of the edge D trigger comprises: a fourth switching transistor of P-type; the grid electrode of the fourth switching transistor is connected with the negative phase output end of the edge D trigger, the source electrode of the fourth switching transistor is connected with the driving electrode, and the drain electrode of the fourth switching transistor is connected with the first end of the corresponding charge release module.
7. The display panel according to any one of claims 1 to 6, further comprising an amplifier in each of the pixel cells; wherein, for each pixel unit, the third terminal of the conduction control module is connected with the first terminal of the charge releasing module through the amplifier.
8. The display panel according to any one of claims 1 to 6, wherein the display panel is a liquid crystal display panel, and the driving electrode is a pixel electrode; or,
the display panel is an electroluminescent display panel, and the driving electrode is an anode of an electroluminescent device.
9. A display device characterized by comprising the display panel according to any one of claims 1 to 8.
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| CN201710898742.4A CN107564488B (en) | 2017-09-28 | 2017-09-28 | Display panel and display device |
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| CN201710898742.4A CN107564488B (en) | 2017-09-28 | 2017-09-28 | Display panel and display device |
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| CN107564488B true CN107564488B (en) | 2020-04-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108304095A (en) * | 2018-02-09 | 2018-07-20 | 广东欧珀移动通信有限公司 | Display panel control method, device and display drive circuit |
| CN108334235A (en) * | 2018-02-09 | 2018-07-27 | 广东欧珀移动通信有限公司 | Display panel control method, device and equipment |
| CN111048054B (en) * | 2020-01-03 | 2022-04-12 | 京东方科技集团股份有限公司 | Pixel driving method and pixel driving circuit |
| CN115457910B (en) * | 2022-09-28 | 2024-10-18 | 厦门天马显示科技有限公司 | Display module, driving method thereof and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1447306A (en) * | 2002-03-26 | 2003-10-08 | 华邦电子股份有限公司 | Control device and method for eliminating ghost on panels of liquid crystal |
| CN2881871Y (en) * | 2005-12-08 | 2007-03-21 | 群康科技(深圳)有限公司 | Control circuit device and liquid crystal display using the control circuit device |
| TWI413074B (en) * | 2009-03-05 | 2013-10-21 | Wintek Corp | Liquid crystal display |
| CN102867491B (en) * | 2012-09-03 | 2014-12-10 | 京东方科技集团股份有限公司 | LCD (Liquid Crystal Display) panel drive circuit and method as well as display unit |
| CN104036716A (en) * | 2014-06-24 | 2014-09-10 | 上海中航光电子有限公司 | Drive and control circuit and display device of display panel |
| CN104795040B (en) * | 2015-04-30 | 2017-05-10 | 京东方科技集团股份有限公司 | Array substrate, display device and shutdown ghost improving circuit for display device |
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