CN114005415A - Drive circuit and display panel - Google Patents
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- CN114005415A CN114005415A CN202111186292.9A CN202111186292A CN114005415A CN 114005415 A CN114005415 A CN 114005415A CN 202111186292 A CN202111186292 A CN 202111186292A CN 114005415 A CN114005415 A CN 114005415A
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- 239000003990 capacitor Substances 0.000 claims description 53
- 239000010409 thin film Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 8
- 239000004065 semiconductor Substances 0.000 claims description 8
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 6
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 6
- 229920005591 polysilicon Polymers 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000005669 field effect Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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Abstract
The application relates to a driving circuit and a display panel, wherein the driving circuit comprises a switch module, a compensation module, a driving module and a control module; the first end of the switch module is connected with the current column data signal line, the second end of the switch module is connected with the current row scanning signal line, and the third end of the switch module is connected with the first end of the compensation module; the second end of the compensation module is connected with a common power line, the third end of the compensation module is connected with a row of scanning signal lines, the fourth end of the compensation module is respectively connected with the first end of the driving module and the first end of the control module, and the fifth end of the compensation module is connected with the second end of the driving module; the third end of the driving module is connected with a common power line; the second end of the control module is connected with the light-emitting device, and the third end of the control module is connected with the current row light-emitting control line; the compensation module is used for compensating the voltage of the driving module to eliminate the starting voltage of the driving module, and the compensation module is used for compensating the voltage of the driving module to eliminate the starting voltage of the driving module, so that the difference of the performance of components caused by production and manufacturing is eliminated.
Description
Technical Field
The present disclosure relates to display driving technologies, and particularly to a driving circuit and a display panel.
Background
With the development of display technology, devices with display functions (e.g., televisions) are increasingly used. In addition, as the user demands for the displayed image quality to be higher, the user demands for the backlight, which is an important factor affecting the displayed image quality, to be higher. At present, in order to improve the backlight quality, the backlight partition needs to be increased, but with the increase of the partition, a large number of driving circuit components are increased, so that the problems of increasing board space, difficult layout of driving boards and the like are caused.
In addition, the present inventors found that the following problems exist in the conventional technology during the implementation process, because the manufacturing difference of the MOS (Metal-Oxide-Semiconductor Field-Effect Transistor) Transistor in the driving circuit may cause the problem of non-uniform backlight emission: the conventional display panel has a problem of non-uniform light emission.
Disclosure of Invention
In view of the above, it is necessary to provide a driving circuit and a display panel for solving the problem of uneven light emission of the conventional display panel.
In order to achieve the above object, in one aspect, an embodiment of the present application provides a driving circuit, which includes a switching module, a compensation module, a driving module, and a control module;
the first end of the switch module is connected with the current column data signal line, the second end of the switch module is connected with the current row scanning signal line, and the third end of the switch module is connected with the first end of the compensation module;
the second end of the compensation module is connected with a common power line, the third end of the compensation module is connected with a row of scanning signal lines, the fourth end of the compensation module is respectively connected with the first end of the driving module and the first end of the control module, and the fifth end of the compensation module is connected with the second end of the driving module;
the third end of the driving module is connected with a common power line; the second end of the control module is connected with the light-emitting device, and the third end of the control module is connected with the current row light-emitting control line;
the compensation module is used for compensating the voltage of the driving module in the process of lighting the light-emitting device so as to eliminate the starting voltage of the driving module.
Optionally, the switch module comprises a first transistor;
the drain electrode of the first transistor is connected with the current column data signal line, the grid electrode of the first transistor is connected with the current row scanning signal line, and the source electrode of the first transistor is connected with the first end of the compensation module.
Optionally, the compensation module includes a second transistor, a third transistor, a first capacitor, and a second capacitor;
the drain electrode of the second transistor is respectively connected with the source electrode of the first transistor, the first end of the first capacitor and the second end of the second capacitor, the source electrode is connected with a common power line, and the grid electrode is connected with a row of scanning signal lines;
the second end of the first capacitor is connected with a common power line; the second end of the second capacitor is respectively connected with the source electrode of the third transistor and the second end of the driving module;
the grid electrode of the third transistor is connected with the scanning signal line on the previous row, and the drain electrode of the third transistor is respectively connected with the first end of the driving module and the first end of the control module.
Optionally, the driving module includes a fourth transistor;
the drain electrode of the fourth transistor is connected with a common power line, the grid electrode of the fourth transistor is respectively connected with the second end of the second capacitor and the source electrode of the third transistor, and the source electrode of the fourth transistor is respectively connected with the drain electrode of the third transistor and the first end of the control module.
Optionally, the control module includes a fifth transistor;
the drain electrode of the fifth transistor is connected with the source electrode of the fourth transistor, the grid electrode of the fifth transistor is connected with the current row light-emitting control line, and the source electrode of the fifth transistor is connected with the light-emitting device.
Optionally, the operation flow of the driving circuit includes an initial reset phase;
in an initial reset stage, a high level signal is input to a current row scanning signal line, a low level signal is input to a previous row scanning signal line, a high level signal is input to a light-emitting control line, the first transistor and the fifth transistor are turned off, and the second transistor, the third transistor and the fourth transistor are turned on, so that the voltages of the first capacitor and the second capacitor are equal to the voltage on the common power line.
Optionally, the operation flow of the driving circuit includes a data writing stage;
in the data writing stage, a low level signal is input into a current row scanning signal line, a high level signal is input into a previous row scanning signal line, a high level signal is input into a light-emitting control line, the second transistor and the fifth transistor are closed, and the first transistor, the third transistor and the fourth transistor are turned on, so that the voltage of the current column data signal line and the turn-on voltage of the fourth transistor are stored in the first capacitor and the second capacitor.
Optionally, the operation flow of the driving circuit includes a light-emitting control stage;
in the stage of controlling light emission, a high level signal is input into a current line scanning signal line, a high level signal is input into a previous line scanning signal line, a low level signal is input into a light emission control line, the first transistor, the second transistor and the third transistor are turned off, and the fourth transistor and the fifth transistor are turned on, so that the voltage stored in the first capacitor and the second capacitor compensates the fourth transistor, the turn-on voltage of the fourth transistor is eliminated, and the light emitting device is lightened.
Optionally, the first transistor is a low-temperature polysilicon thin film transistor, an oxide semiconductor thin film transistor, or an amorphous silicon thin film transistor.
In another aspect, an embodiment of the present application provides a display panel including the driving circuit described above.
One of the above technical solutions has the following advantages and beneficial effects:
the driving circuit comprises a switch module, a compensation module, a driving module and a control module, wherein the switch module is respectively connected with a current column data signal line, a current row scanning signal line and the compensation module. The compensation module is respectively connected with the common power line, the last row of scanning signal lines, the driving module and the control module. The driving module is also connected with a common power line. The control module is also connected with the light-emitting device and the current row light-emitting control line. The compensation module is used for compensating the voltage of the driving module so as to eliminate the starting voltage of the driving module and eliminate the performance difference of components caused by production and manufacturing.
Drawings
Fig. 1 is a schematic structural diagram of a driving circuit according to an embodiment of the present disclosure.
Fig. 2 is a circuit diagram of a driving circuit according to an embodiment of the present disclosure.
Fig. 3 is a schematic current flow diagram of the driving circuit in the initial reset phase according to the embodiment of the present disclosure.
Fig. 4 is a schematic current flow diagram of a data writing phase of a driving circuit according to an embodiment of the present disclosure.
Fig. 5 is a schematic diagram illustrating a driving circuit for controlling a current flow in a light emitting stage according to an embodiment of the present disclosure.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "first end," "second end," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The display panel includes a driving circuit for driving the Light Emitting device 19 to emit Light, for example, an Organic Light-Emitting Diode (OLED) device. The driving circuit is composed of electronic components such as capacitors and transistors, and the electronic components cannot have the same performance due to differences in production processes, materials and the like, and have differences, particularly, the transistors are used as important components of the driving circuit, and the turn-on voltage of the transistors can be added to the light-emitting devices 19 when the light-emitting devices 19 are driven to be lighted, and because of the differences in the performance of the transistors, the light-emitting devices 19 have different light-emitting characteristics, and finally the display panel has uneven light-emitting. In order to solve the above problem, as shown in fig. 1, the present application provides a driving circuit, which includes a switching module 11, a compensation module 13, a driving module 15, and a control module 17.
The switch module 11 is controlled by a signal input from a current row scan signal line (scan (n)), for example, the switch module 11 is turned on when a low level signal is input to the current row scan signal line, and the switch module 11 is turned off when a high level signal is input to the current row scan signal line. The switching module 11 receives a data signal written on a current column data signal line (data (n)), and transmits the data signal to the compensation module 13, so that the driving circuit controls the light emitting device 19 to be turned on based on the data signal. In order to realize the signal transmission, a first terminal of the switch module 11 is connected to the current column data signal line, a second terminal is connected to the current row scanning signal line, and a third terminal is connected to a first terminal of the compensation module 13. The current line scanning signal line is used for transmitting scanning signals. The current column data signal line is used for transmitting data signals.
The specific structure of the switch module 11 may be designed according to specific needs, and in one example, as shown in fig. 2, the switch module 11 includes a first transistor T1; the drain of the first transistor T1 is connected to the current column data signal line, the gate is connected to the current row scanning signal line, and the source is connected to the first end of the compensation module 13. It is understood that the drain of the first transistor T1 serves as the first terminal of the switch module 11, the gate of the first transistor T1 serves as the second terminal of the switch module 11, and the source of the first transistor T1 serves as the third terminal of the switch module 11. The first Transistor T1 is also called a MOS Transistor (Metal-Oxide-Semiconductor Field-Effect Transistor). In one example, the first transistor T1 is a low temperature polysilicon thin film transistor, an oxide semiconductor thin film transistor, or an amorphous silicon thin film transistor. The first transistor T1 may be a P-type transistor or an N-type transistor.
The compensation module 13 is configured to store the data signal input by the switch module 11 and the turn-on voltage of the driving module 15, and in the process of lighting the light emitting device 19, the compensation module 13 is configured to compensate the voltage of the driving module 15 to eliminate the turn-on voltage of the driving module 15, specifically, the compensation module 13 supplements the driving module 15 with the turn-on voltage of the driving module 15 stored thereon, and eliminates the turn-on voltage of the driving module 15 in the process of lighting the light emitting device 19. To realize the above process, the second terminal of the compensation module 13 is connected to the common power line (VCC), the third terminal is connected to the last row of SCAN signal lines (SCAN (n-1)), the fourth terminal is respectively connected to the first terminal of the driving module 15 and the first terminal of the control module 17, and the fifth terminal is connected to the second terminal of the driving module 15.
The specific structure of the compensation module 13 may be designed according to specific needs, in an example, as shown in fig. 2, the compensation module 13 includes a second transistor T2, a third transistor T3, a first capacitor C1, and a second capacitor C2, a drain of the second transistor T2 is connected to a source of the first transistor T1, a first end of the first capacitor C1, and a second end of the second capacitor C2, respectively, the source is connected to a common power line, a gate is connected to a scan signal line in a row, a second end of the first capacitor C1 is connected to the common power line, a second end of the second capacitor C2 is connected to a source of the third transistor T3 and a second end of the driving module 15, a gate of the third transistor T3 is connected to a scan signal line in a row, and a drain is connected to a first end of the driving module 15 and a first end of the control module 17, respectively. It is understood that the drain of the second transistor T2 serves as the first terminal of the compensation module 13, the source of the second transistor T2 and the second terminal of the first capacitor C1 serve as the second terminal of the compensation module 13, the gate of the second transistor T2 serves as the third terminal of the compensation module 13, the drain of the third transistor T3 serves as the fourth terminal of the compensation module 13, and the second terminal of the second capacitor C2 serves as the fifth terminal of the compensation module 13.
In one example, the second transistor T2 is a low temperature polysilicon thin film transistor, an oxide semiconductor thin film transistor, or an amorphous silicon thin film transistor. In one example, the third transistor T3 is a low temperature polysilicon thin film transistor, an oxide semiconductor thin film transistor, or an amorphous silicon thin film transistor. The second transistor T2 may be a P-type transistor or an N-type transistor. The third transistor T3 may be a P-type transistor or an N-type transistor.
During the process of lighting the light emitting device 19 by the driving module 15, the driving module 15 receives the turn-on voltage stored by the compensation module 13 to perform self-compensation. The driving module 15 receives the data signal stored in the compensation module 13 and drives the control module 17 to light the light emitting device 19 in combination with the voltage signal of the common power line. Specifically, the third terminal of the driving module 15 is connected to the common power line. The specific structure of the driving module 15 may be designed according to specific requirements, and in one example, as shown in fig. 2, the driving module 15 includes a fourth transistor T4, a drain of the fourth transistor T4 is connected to a common power line, a gate of the fourth transistor T4 is connected to the second terminal of the second capacitor C2 and a source of the third transistor T3, and a source of the fourth transistor T4 is connected to the first terminal of the control module 17. It is understood that the source of the fourth transistor T4 serves as the first terminal of the driving module 15, the gate of the fourth transistor T4 serves as the second terminal of the driving module 15, and the drain of the fourth transistor T4 serves as the third terminal of the driving module 15. In one example, the fourth transistor T4 is a low temperature polysilicon thin film transistor, an oxide semiconductor thin film transistor, or an amorphous silicon thin film transistor. The fourth transistor T4 may be a P-type transistor or an N-type transistor.
The control module 17 receives the driving of the driving module 15 to light the light emitting device 19, and a second end of the control module 17 is connected to the light emitting device 19 and a third end is connected to the current row light emitting control line (em (n)). The specific structure of the control module 17 may be designed according to specific needs, and in one example, as shown in fig. 2, optionally, the control module 17 includes a fifth transistor T5; the fifth transistor T5 has a drain connected to the source of the fourth transistor T4, a gate connected to the current row emission control line, and a source connected to the light emitting device 19. It is understood that the drain of the fifth transistor T5 serves as the first terminal of the control module 17, the source of the fifth transistor T5 serves as the second terminal of the control module 17, and the gate of the fifth transistor T5 serves as the third terminal of the control module 17.
The operation flow of the driving circuit of the present application is described in detail below, and the driving circuit of the present application includes a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a first capacitor C1, and a second capacitor C2.
The first transistor T1 has a drain connected to a current column data signal line, a gate connected to a current row scanning signal line, and a source connected to the drain of the second transistor T2.
The drain of the second transistor T2 is connected to the source of the first transistor T1, the first end of the first capacitor C1 and the second end of the second capacitor C2, respectively, the source is connected to a common power line, and the gate is connected to a row of scanning signal lines.
A second end of the first capacitor C1 is connected with a common power line; a second terminal of the second capacitor C2 is connected to the source of the third transistor T3 and the gate of the fourth transistor T4, respectively.
The third transistor T3 has a gate connected to a previous row of scan signal lines and a drain connected to the source of the fourth transistor T4 and the drain of the fifth transistor T5, respectively.
The drain of the fourth transistor T4 is connected to the common power line, the gate is connected to the second terminal of the second capacitor C2 and the source of the third transistor T3, and the source is connected to the drain of the third transistor T3 and the drain of the fifth transistor T5.
The fifth transistor T5 has a drain connected to the source of the fourth transistor T4, a gate connected to the current row emission control line, and a source connected to the light emitting device 19.
Based on the driving circuit, the driving circuit comprises an initial reset phase, a data writing phase and a light emitting control phase.
As shown in fig. 3, in the initial reset phase, a high level signal is input to the current row scan signal line, a low level signal is input to the previous row scan signal line, a high level signal is input to the light emission control line, the first transistor T1 and the fifth transistor T5 are turned off, and the second transistor T2, the third transistor T3 and the fourth transistor T4 are turned on, so that the voltages of the first capacitor C1 and the second capacitor C2 are equal to the Voltage (VCC) on the common power line. The initial reset phase is used to initialize the first capacitor C1 and the second capacitor C2.
As shown in fig. 4, in the data writing phase, the current row scan signal line inputs a low level signal, the previous row scan signal line inputs a high level signal, the light emitting control line inputs a high level signal, the second transistor T2 and the fifth transistor T5 are turned off, and the first transistor T1, the third transistor T3 and the fourth transistor T4 are turned on, so that the voltage of the current column data signal line and the fourth transistor T4 are turned onThe turn-on voltage of the transistor T4 is stored in the first capacitor C1 and the second capacitor C2. The voltage V stored by the first capacitor C1 and the second capacitor C2Data′＝VData-Vth(wherein, VDataIndicating the voltage on the data signal line, VthRepresenting the turn-on voltage of the transistor).
As shown in fig. 5, in the light emitting control phase, a high level signal is input to the current row scanning signal line, a high level signal is input to the previous row scanning signal line, a low level signal is input to the light emitting control line, the first transistor T1, the second transistor T2 and the third transistor T3 are turned off, the fourth transistor T4 and the fifth transistor T5 are turned on, so that the voltage stored in the first capacitor C1 and the second capacitor C2 compensates for the fourth transistor T4, the turn-on voltage of the fourth transistor T4 is removed, and the light emitting device 19 is turned on.
The above process may be expressed based on the following formula according to which the driving current of the fourth transistor T4 is calculated:
Id＝K*(Vgs-Vth)2
wherein, IdRepresents the drive current, VgsRepresenting the voltage between the gate and the source of the fourth transistor T4.
Calculate V based on the following equationgs：
Vgs＝VCC-VData’
Finally, the following can be obtained:
Id＝K*(VCC-VData)2
accordingly, the influence of the turn-on voltage of the fourth transistor T4 on the driving is eliminated, thereby eliminating the difference in the degree of inversion of the liquid crystal due to the difference of the transistors themselves.
The driving circuit comprises a switch module 11, a compensation module 13, a driving module 15 and a control module 17, wherein the switch module 11 is respectively connected with a current column data signal line, a current row scanning signal line and the compensation module 13. The compensation module 13 is respectively connected with the common power line, the previous row of scanning signal lines, the driving module 15 and the control module 17. The drive module 15 is also connected to a common power supply line. The control module 17 is also connected to the light emitting device 19 and the current row light emission control line. The compensation module 13 is used for compensating the voltage of the driving module 15 to eliminate the starting voltage of the driving module 15, so that the difference of the performance of the components caused by production and manufacturing is eliminated.
The embodiment of the application provides a display panel, which comprises the driving circuit.
It should be noted that the driving circuit in this embodiment is the same as the driving circuit described in the embodiments of the driving circuit of this application, and is not described herein again.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A driving circuit is characterized by comprising a switch module, a compensation module, a driving module and a control module;
the first end of the switch module is connected with the current column data signal line, the second end of the switch module is connected with the current row scanning signal line, and the third end of the switch module is connected with the first end of the compensation module;
the second end of the compensation module is connected with a common power line, the third end of the compensation module is connected with a row of scanning signal lines, the fourth end of the compensation module is respectively connected with the first end of the driving module and the first end of the control module, and the fifth end of the compensation module is connected with the second end of the driving module;
the third end of the driving module is connected with the common power line; the second end of the control module is connected with the light-emitting device, and the third end of the control module is connected with the current row light-emitting control line;
the compensation module is used for compensating the voltage of the driving module in the process of lighting the light-emitting device so as to eliminate the starting voltage of the driving module.
2. The driving circuit of claim 1, wherein the switching module comprises a first transistor;
the drain electrode of the first transistor is connected with the current column data signal line, the grid electrode of the first transistor is connected with the current row scanning signal line, and the source electrode of the first transistor is connected with the first end of the compensation module.
3. The driving circuit according to claim 2, wherein the compensation module comprises a second transistor, a third transistor, a first capacitor, and a second capacitor;
the drain electrode of the second transistor is respectively connected with the source electrode of the first transistor, the first end of the first capacitor and the second end of the second capacitor, the source electrode is connected with the common power line, and the grid electrode is connected with the upper row of scanning signal lines;
the second end of the first capacitor is connected with the common power line; a second end of the second capacitor is respectively connected with a source electrode of the third transistor and a second end of the driving module;
the grid electrode of the third transistor is connected with the scanning signal line on the upper row, and the drain electrode of the third transistor is respectively connected with the first end of the driving module and the first end of the control module.
4. The driving circuit according to claim 3, wherein the driving module comprises a fourth transistor;
the drain of the fourth transistor is connected to the common power line, the gate of the fourth transistor is respectively connected to the second end of the second capacitor and the source of the third transistor, and the source of the fourth transistor is respectively connected to the drain of the third transistor and the first end of the control module.
5. The driving circuit of claim 4, wherein the control module comprises a fifth transistor;
the drain electrode of the fifth transistor is connected with the source electrode of the fourth transistor, the grid electrode of the fifth transistor is connected with the current row light-emitting control line, and the source electrode of the fifth transistor is connected with the light-emitting device.
6. The driving circuit according to claim 5, wherein the operation flow of the driving circuit comprises an initial reset phase;
in the initial reset phase, the current row scanning signal line inputs a high level signal, the previous row scanning signal line inputs a low level signal, the light emitting control line inputs a high level signal, the first transistor and the fifth transistor are turned off, and the second transistor, the third transistor and the fourth transistor are turned on, so that the voltages of the first capacitor and the second capacitor are equal to the voltage on the common power line.
7. The driving circuit according to claim 6, wherein the operation flow of the driving circuit comprises a data writing phase;
in the data writing phase, the current row scanning signal line inputs a low level signal, the previous row scanning signal line inputs a high level signal, the light emitting control line inputs a high level signal, the second transistor and the fifth transistor are turned off, and the first transistor, the third transistor and the fourth transistor are turned on, so that the voltage of the current column data signal line and the turn-on voltage of the fourth transistor are stored in the first capacitor and the second capacitor.
8. The driving circuit according to claim 7, wherein the operation flow of the driving circuit comprises controlling a light emitting phase;
in the stage of controlling light emission, a high level signal is input to the current line scanning signal line, a high level signal is input to the previous line scanning signal line, a low level signal is input to the light emission control line, the first transistor, the second transistor and the third transistor are turned off, and the fourth transistor and the fifth transistor are turned on, so that the voltage stored in the first capacitor and the second capacitor compensates the fourth transistor, the turn-on voltage of the fourth transistor is eliminated, and the light emitting device is turned on.
9. The driver circuit according to any one of claims 2 to 8, wherein the first transistor is a low temperature polysilicon thin film transistor, an oxide semiconductor thin film transistor, or an amorphous silicon thin film transistor.
10. A display panel comprising the driver circuit according to any one of claims 1 to 9.
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| CN202111186292.9A CN114005415A (en) | 2021-10-12 | 2021-10-12 | Drive circuit and display panel |
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| CN202111186292.9A CN114005415A (en) | 2021-10-12 | 2021-10-12 | Drive circuit and display panel |
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| CN (1) | CN114005415A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106409227A (en) * | 2016-12-02 | 2017-02-15 | 武汉华星光电技术有限公司 | Pixel circuit and driving method thereof, and organic light-emitting display device |
| CN210982997U (en) * | 2019-12-31 | 2020-07-10 | 惠州视维新技术有限公司 | Color film substrate, display panel and display device |
| CN112703551A (en) * | 2018-11-23 | 2021-04-23 | 深圳市柔宇科技股份有限公司 | Pixel circuit, driving method and display panel |
-
2021
- 2021-10-12 CN CN202111186292.9A patent/CN114005415A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106409227A (en) * | 2016-12-02 | 2017-02-15 | 武汉华星光电技术有限公司 | Pixel circuit and driving method thereof, and organic light-emitting display device |
| CN112703551A (en) * | 2018-11-23 | 2021-04-23 | 深圳市柔宇科技股份有限公司 | Pixel circuit, driving method and display panel |
| CN210982997U (en) * | 2019-12-31 | 2020-07-10 | 惠州视维新技术有限公司 | Color film substrate, display panel and display device |
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Application publication date: 20220201 |