CN110111753B - Driving method and device of display panel - Google Patents
Driving method and device of display panel Download PDFInfo
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- CN110111753B CN110111753B CN201910283190.5A CN201910283190A CN110111753B CN 110111753 B CN110111753 B CN 110111753B CN 201910283190 A CN201910283190 A CN 201910283190A CN 110111753 B CN110111753 B CN 110111753B
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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
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- 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
-
- 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
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
Abstract
The application provides a driving method and a device of a display panel, and the driving method of the display panel comprises the following steps: acquiring a first driving voltage of a first area of the target panel; detecting an abnormality of the target panel according to the first driving voltage; when the first driving voltage is smaller than a threshold value, reducing the first common voltage of the first area; when the first driving voltage is equal to a threshold value, the first common voltage of the first region is restored. According to the display panel, the first driving voltage of the display panel is detected, the first driving voltage can be the output voltage of a public signal line or the input voltage of a data signal line, when the two voltages are smaller than a preset threshold value, the display panel is judged to generate transverse crosstalk, the input voltage of the public signal line corresponding to the first area is reduced through a preset device, the voltage difference between the public signal line before and after input and output is reduced, the stability of the public voltage in the first area is ensured, and the transverse crosstalk of a display panel picture is avoided.
Description
Technical Field
The present disclosure relates to display technologies, and in particular, to a method and an apparatus for driving a display panel.
Background
In the existing 3T pixel structure, the sub-area pixel is connected to the common voltage a _ com through the shared thin film transistor TFT _ share to discharge the sub-area, and the main area and the sub-area form a potential difference to make the liquid crystal in the main area and the sub-area not in the same direction, so as to compensate the viewing angle. The voltage of the common voltage a _ com changes at different gray levels because the voltage source of the common voltage a _ com cannot stabilize an excessive current difference.
When the voltage variation of the common voltage a _ com is too large, the voltage cannot be timely recovered to the value before the variation, so that the common voltage a _ com is unstable, and the transverse crosstalk occurs on the display panel picture.
Therefore, a driving method of a display panel is needed to solve the above problems.
Disclosure of Invention
The application provides a driving method and device of a display panel, which aim to solve the technical problem that the voltage of a common electrode of the existing display panel is unstable.
In order to solve the technical problem, the technical scheme provided by the application is as follows:
the application provides a driving method of a display panel, which comprises the following steps:
s10, acquiring a first driving voltage of a first area of the target panel;
s20, detecting the abnormity of the target panel according to the first driving voltage;
s30, when the first driving voltage is smaller than a threshold value, the target panel is abnormal, and the first common voltage of the first area is reduced;
s40, when the first driving voltage is equal to a threshold value, the target panel is normal, and the first common voltage of the first region is restored;
the first common voltage is an input voltage of a common signal line of the pixel circuits in the first region.
In the driving method of the present application, step S10 includes:
scanning the target panel;
acquiring a first data voltage of a first area of the target panel;
the first data voltage is an input voltage of a data signal line in the pixel circuit in the first area.
In the driving method of the present application, the driving method of the display panel includes:
s30, when the first data voltage is smaller than a first threshold value, the target panel is abnormal, and the first common voltage of the first area is reduced through a preset device;
s40, when the first data voltage is equal to a first threshold value, the target panel is normal, and the first common voltage of the first area is restored by the predetermined means.
In the driving method of the present application, step S10 includes:
scanning the target panel;
acquiring a second common voltage of the first area of the target panel;
the second common voltage is the output voltage of the common signal line of the pixel circuit in the first area.
In the driving method of the present application, the driving method of the display panel includes:
s30, when the second common voltage is smaller than a second threshold value, the target panel is abnormal, and the first common voltage of the first area is reduced through a preset device;
s40, when the second common voltage is equal to a second threshold, the target panel is normal, and the first common voltage of the first area is restored by the predetermined means.
The application also provides a driving device of the display panel, which comprises an acquisition module, a detection module, a first regulation and control module and a second regulation and control module;
the acquisition module is used for acquiring a first driving voltage of a first area of a target panel;
the detection module is used for detecting the abnormity of the target panel according to the first driving voltage;
the first regulation and control module is used for reducing the first public voltage of the first area when the first driving voltage is smaller than a threshold value and the target panel is abnormal;
the second regulation and control module is used for recovering the first common voltage of the first area when the target panel is normal when the first driving voltage is equal to a threshold value;
the first common voltage is an input voltage of a common signal line of the pixel circuits in the first region.
In the driving apparatus of the present application, the acquisition module includes a scanning unit and an acquisition unit;
the scanning unit is used for scanning the target panel;
the acquisition unit acquires a first data voltage of a first area of the target panel;
the first data voltage is an input voltage of a data signal line in the pixel circuit in the first area.
In the drive device of the present application,
the first regulation and control module is used for reducing the first common voltage of the first area through a preset device when the first data voltage is smaller than a first threshold value and the target panel is abnormal;
the second regulating module is used for recovering the first common voltage of the first area through the predetermined device when the target panel is normal when the first data voltage is equal to a first threshold value.
In the drive device of the present application,
the acquisition module comprises a scanning unit and an acquisition unit;
the scanning unit is used for scanning the target panel;
the acquisition unit acquires a second common voltage of a first area of the target panel;
the second common voltage is the output voltage of the common signal line of the pixel circuit in the first area.
In the drive device of the present application,
the first regulation and control module is used for reducing the first public voltage of the first area through a preset device when the second public voltage is smaller than a second threshold value and the target panel is abnormal;
the second regulation and control module is used for recovering the first common voltage of the first area through the predetermined device when the target panel is normal when the second common voltage is equal to a second threshold value.
The beneficial effects are that: according to the display panel, the first driving voltage of the display panel is detected, the first driving voltage can be the output voltage of a public signal line or the input voltage of a data signal line, when the two voltages are smaller than a preset threshold value, the display panel is judged to generate transverse crosstalk, the input voltage of the public signal line corresponding to the first area is reduced through a preset device, the voltage difference between the public signal line before and after input and output is reduced, the stability of the public voltage in the first area is guaranteed, and the transverse crosstalk of a picture of the display panel is avoided.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a circuit diagram of a 3T pixel structure of a conventional display panel;
FIG. 2 is a step diagram of a display panel driving method according to the present application;
FIG. 3 is a first structural diagram of a display panel driving apparatus according to the present application;
fig. 4 is a second structural view of the display panel driving apparatus according to the present application.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments that can be implemented by the application. Directional phrases used in this application, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and understanding, and is in no way limiting. In the drawings, elements having similar structures are denoted by the same reference numerals.
Referring to fig. 1, fig. 1 is a circuit diagram of a 3T pixel structure of a conventional display panel.
The liquid crystal display panel comprises a plurality of sub-pixels which are arranged in an array mode, and each sub-pixel comprises a main area and a sub area.
The main area is internally provided with a main area thin film transistor TFT _ m, a main area liquid crystal capacitor Clc _ m and a main area storage capacitor Cst _ m.
And a sub-region thin film transistor TFT _ s, a sub-region liquid crystal capacitor Clc _ s, a sub-region storage capacitor Cst _ s and a shared thin film transistor TFT _ share are arranged in the sub-region.
The liquid crystal display panel also comprises a scanning line Gate corresponding to each row of sub-pixels and a Data line Data corresponding to each column of sub-pixels.
In the structure of fig. 1, the Gate of the main region thin film transistor TFT _ m is connected to the scan line Gate, and the source/drain of the main region thin film transistor TFT _ m is connected to the Data line Data.
The main-region liquid crystal capacitance Clc _ m is connected in parallel between the drain/source of the main-region thin film transistor TFT _ m and a first common voltage a _ com 1. A main region storage capacitor Cst _ m is connected in parallel between the drain/source of the main region thin film transistor TFT _ m and C _ com.
In the structure of fig. 1, the Gate of the sub-region thin film transistor TFT _ s is connected to the scan line Gate, and the source/drain of the sub-region thin film transistor TFT _ s is connected to the Data line Data.
The sub-area storage capacitor Cst _ s is connected in parallel between the drain/source of the sub-area thin film transistor TFT _ s and the first common voltage a _ com 1. A sub-field liquid crystal capacitor Clc _ s is connected in parallel between a drain/source of the sub-field thin film transistor TFT _ s and C _ com.
In the structure of fig. 1, the Gate of the shared thin film transistor TFT _ share is connected to the scan line Gate, and the source/drain of the shared thin film transistor TFT _ share is connected to the drain/source of the sub-area thin film transistor TFT _ s and the second common voltage a _ com2, respectively.
In the structure of fig. 1, the first common voltage a _ com1 is an input voltage of a common signal line in a pixel circuit, and the second common voltage a _ com2 is an output voltage of the common signal line in the pixel circuit.
Based on the above pixel structure circuit diagram, the present application provides a driving method of a display panel, and please refer to fig. 2, the driving method of the display panel includes:
s10, acquiring a first driving voltage of a first area of the target panel;
step S10 specifically includes:
s101, scanning the target panel by using a first device;
s102, acquiring a first driving voltage of a first area of the target panel;
in this embodiment, the first area may be any area of the target panel, and the application is not particularly limited. Step S101 of the present application may be understood that the first device may be any region for scanning the target panel.
In this embodiment, the first driving voltage may be an input voltage of a data signal line in the corresponding pixel circuit or an output voltage in a common signal line. The input voltage of the Data signal line corresponds to the input voltage of the Data line Data in fig. 1, and the output voltage of the common signal line corresponds to the second common voltage a _ com2 in fig. 1.
S20, detecting the abnormity of the target panel according to the first driving voltage;
in step S10, the first driving voltage may be an input voltage of a data signal line in the corresponding pixel circuit or an output voltage of a common signal line. When a disturbance occurs in the input voltage of the data signal line, the output voltage in the common signal line also fluctuates with the input voltage of the data signal line. Therefore, the monitoring of the target panel only needs to correspond to one of the input voltage of the data signal line in the pixel circuit or the output voltage in the common signal line.
S30, when the first driving voltage is less than the threshold value, the target panel is abnormal, and the first common voltage a _ com1 of the first zone is reduced;
s40, when the first driving voltage is equal to the threshold value, the target panel is normal, and the first common voltage a _ com1 of the first zone is restored;
in steps S30 and S40, when the first driving voltage is an input voltage of a data signal line in a corresponding pixel circuit, the driving method of the display panel includes:
s30, when the first data voltage is less than a first threshold value, the target panel is abnormal, and the first common voltage a _ com1 of the first zone is lowered by a predetermined means;
s40, when the first data voltage is equal to a first threshold value, the target panel is normal, and the first common voltage a _ com1 of the first zone is restored by the predetermined means.
In this embodiment, the first threshold is an input voltage value of the data signal line when the corresponding pixel circuit normally operates.
Or, when the first driving voltage is an output voltage in a common signal line, the driving method of the display panel includes:
s30, when the second common voltage a _ com2 is less than a second threshold value, the target panel is abnormal, and the first common voltage a _ com1 of the first zone is lowered by a predetermined means;
s40, when said second common voltage a _ com2 is equal to a second threshold value, said target panel is normal, and said first common voltage a _ com1 of said first zone is restored by said predetermined means.
In this embodiment, the second threshold is an output voltage value of the common signal line when the corresponding pixel circuit normally operates.
In the above steps, the first common voltage a _ com1 is an input voltage of a pixel circuit common signal line in the first area.
Since the first data voltage pulls the second common voltage a _ com2 of the corresponding pixel unit down to the same level when the first data voltage is less than the first threshold, and the second common voltage a _ com2 of the corresponding pixel unit is less than the second threshold, the corresponding gray scale voltage of the corresponding pixel unit will decrease, and the brightness will decrease, resulting in abnormal display of the target panel.
The present application increases the stability of the common voltage of the corresponding region and avoids the occurrence of the lateral crosstalk of the target panel display panel by lowering the first common voltage a _ com1 to reduce the difference between the first common voltage a _ com1 and the second common voltage a _ com 2.
When the first data voltage is equal to the first threshold or the second common voltage a _ com2 is equal to the second threshold, the target panel is normally displayed, and the reduced first common voltage a _ com1 needs to be restored to the original level, so as to avoid the brightness of the corresponding pixel unit from being too low due to the reduction of the first common voltage a _ com 1.
According to the display panel, the first driving voltage of the display panel is detected, the first driving voltage can be the output voltage of a public signal line or the input voltage of a data signal line, when the two voltages are smaller than a preset threshold value, the display panel is judged to generate transverse crosstalk, the input voltage of the public signal line corresponding to the first area is reduced through a preset device, the voltage difference between the public signal line before and after input and output is reduced, the stability of the public voltage in the first area is guaranteed, and the transverse crosstalk of a picture of the display panel is avoided.
The application also provides a controller, wherein the controller is used for executing a plurality of instructions stored in the memory so as to realize the driving method of the display panel. The specific content is the same as or similar to the above driving method, and is not described herein again.
Referring to fig. 3, fig. 3 is a first structural diagram of a display panel driving apparatus according to the present application.
The driving apparatus 200 of the display panel includes an obtaining module 201, a detecting module 202, a first regulating module 203, and a second regulating module 204.
The obtaining module 201 is configured to obtain a first driving voltage of a first region of a target panel.
The detecting module 202 is configured to detect an abnormality of the target panel according to the first driving voltage.
The first regulating module 203 is configured to reduce the first common voltage a _ com1 of the first region when the target panel is abnormal when the first driving voltage is less than a threshold.
The second regulating module 204 is configured to restore the first common voltage a _ com1 of the first region when the target panel is normal when the first driving voltage is equal to a threshold.
In the present embodiment, the first common voltage a _ com1 is an input voltage of a pixel circuit common signal line in the first area.
Referring to fig. 4, fig. 4 is a second structural diagram of the display panel driving device of the present application.
In this embodiment, the acquiring module 201 includes a scanning unit 2011 and an acquiring unit 2012.
The scanning unit 2011 is used for scanning the target panel.
The obtaining unit 2012 obtains a first data voltage of the first region of the target panel.
In this embodiment, the first area may be any area of the target panel, and the application is not particularly limited. Step S101 of the present application may be understood that the first device may be any region for scanning the target panel.
In this embodiment, the first driving voltage may be an input voltage of a data signal line in the corresponding pixel circuit or an output voltage in a common signal line. The input voltage of the Data signal line corresponds to the input voltage of the Data line Data in fig. 1, and the output voltage of the common signal line corresponds to the second common voltage a _ com2 in fig. 1.
In this embodiment, the first driving voltage may be an input voltage of a data signal line in the corresponding pixel circuit or an output voltage in a common signal line. When a disturbance occurs in the input voltage of the data signal line, the output voltage in the common signal line also fluctuates with the input voltage of the data signal line. Therefore, the monitoring of the target panel only needs to correspond to one of the input voltage of the data signal line in the pixel circuit or the output voltage in the common signal line.
The acquiring unit in the present embodiment may also acquire the second common voltage a _ com2 of the target panel first area.
In this embodiment, when the first driving voltage is an input voltage of a data signal line in a corresponding pixel circuit:
said first conditioning module 203 may be configured to lower said first common voltage a _ com1 of said first area by a predetermined means when said first data voltage is less than a first threshold value, said target panel is abnormal.
Said second regulating module 204 may be configured to restore said first common voltage a _ com1 of said first zone by said predetermined means when said first data voltage is equal to a first threshold value, said target panel is normal.
Or, when the first driving voltage is an output voltage in a common signal line:
said first conditioning module 203 may be configured for reducing said first common voltage a _ com1 of said first zone by predetermined means, when said second common voltage a _ com2 is less than a second threshold value, said target panel is abnormal.
Said second regulation module 204 may be configured for restoring said first common voltage a _ com1 of said first zone by said predetermined means, when said second common voltage a _ com2 is equal to a second threshold value, said target panel is normal.
Since the first data voltage pulls the second common voltage a _ com2 of the corresponding pixel unit down to the same level when the first data voltage is less than the first threshold, and the second common voltage a _ com2 of the corresponding pixel unit is less than the second threshold, the corresponding gray scale voltage of the corresponding pixel unit will decrease, and the brightness will decrease, resulting in abnormal display of the target panel.
The application increases the stability of the common voltage of the corresponding area and avoids the occurrence of the lateral crosstalk of the display panel of the target panel by reducing the first common voltage A _ com1 and reducing the difference value between the first common voltage A _ com1 and the second common voltage A _ com 2.
When the first data voltage is equal to the first threshold or the second common voltage a _ com2 is equal to the second threshold, the target panel is normally displayed, and the reduced first common voltage a _ com1 needs to be restored to the original level, so as to avoid the brightness of the corresponding pixel unit from being too low due to the reduction of the first common voltage a _ com 1.
The application provides a driving method and a device of a display panel, wherein the driving method of the display panel comprises the following steps: acquiring a first driving voltage of a first area of the target panel; detecting an abnormality of the target panel according to the first driving voltage; when the first driving voltage is smaller than a threshold value, reducing a first common voltage of the first region; restoring the first common voltage of the first region when the first driving voltage is equal to a threshold. According to the display panel, the first driving voltage of the display panel is detected, the first driving voltage can be the output voltage of a public signal line or the input voltage of a data signal line, when the two voltages are smaller than a preset threshold value, the display panel is judged to generate transverse crosstalk, the input voltage of the public signal line corresponding to the first area is reduced through a preset device, the voltage difference between the public signal line before and after input and output is reduced, the stability of the public voltage in the first area is guaranteed, and the transverse crosstalk of a picture of the display panel is avoided.
In summary, although the present application has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.
Claims (10)
1. A method of driving a display panel, comprising:
s10, acquiring a first driving voltage of a first area of a target panel;
s20, detecting the abnormity of the target panel according to the first driving voltage;
s30, when the first driving voltage is smaller than a threshold value, the target panel is abnormal, and the first common voltage of the first area is reduced;
s40, when the first driving voltage is equal to a threshold value, the target panel is normal, and the first common voltage of the first region is restored;
the first common voltage is an input voltage of a common signal line of the pixel circuits in the first area;
the pixel circuit comprises a main area thin film transistor, a secondary area thin film transistor, a shared thin film transistor, a main area storage capacitor and a secondary area storage capacitor;
the scanning line is connected with the grid electrode of the main area thin film transistor, the grid electrode of the secondary area thin film transistor and the grid electrode of the shared thin film transistor; a data line connected to one of the drain/source electrodes of the main region thin film transistor and one of the drain/source electrodes of the sub region thin film transistor; the other of the drain/source of the main region thin film transistor is connected to the first end of the main region storage capacitor; the other of the drain/source electrodes of the sub-region thin film transistor is connected with the first end of the sub-region storage capacitor and one of the drain/source electrodes of the shared thin film transistor; the other of the drain/source of the shared thin film transistor is connected to a second common voltage; the first common voltage is connected to a second terminal of the main region storage capacitor and/or a second terminal of the sub region storage capacitor.
2. The driving method according to claim 1,
step S10 includes:
scanning the target panel;
acquiring a first data voltage of a first area of the target panel;
the first data voltage is an input voltage of a data signal line in the pixel circuit in the first area.
3. The driving method according to claim 2,
the driving method of the display panel includes:
s30, when the first data voltage is smaller than a first threshold value, the target panel is abnormal, and the first common voltage of the first area is reduced through a preset device;
s40, when the first data voltage is equal to a first threshold value, the target panel is normal, and the first common voltage of the first area is restored by the predetermined means.
4. The driving method according to claim 1,
step S10 includes:
scanning the target panel;
acquiring the second common voltage of the first area of the target panel;
the second common voltage is the output voltage of the common signal line of the pixel circuit in the first area.
5. The driving method according to claim 4,
the driving method of the display panel includes:
s30, when the second common voltage is smaller than a second threshold value, the target panel is abnormal, and the first common voltage of the first area is reduced through a preset device;
s40, when the second common voltage is equal to a second threshold, the target panel is normal, and the first common voltage of the first area is restored by the predetermined means.
6. A driving device of a display panel is characterized by comprising an acquisition module, a detection module, a first regulation module and a second regulation module;
the acquisition module is used for acquiring a first driving voltage of a first area of a target panel;
the detection module is used for detecting the abnormity of the target panel according to the first driving voltage;
the first regulation and control module is used for reducing the first public voltage of the first area when the first driving voltage is smaller than a threshold value and the target panel is abnormal;
the second regulation and control module is used for recovering the first common voltage of the first area when the target panel is normal when the first driving voltage is equal to a threshold value;
the first common voltage is an input voltage of a common signal line of the pixel circuits in the first area;
the pixel circuit comprises a main area thin film transistor, a secondary area thin film transistor, a shared thin film transistor, a main area storage capacitor and a secondary area storage capacitor;
the scanning line is connected with the grid electrode of the main area thin film transistor, the grid electrode of the secondary area thin film transistor and the grid electrode of the shared thin film transistor; a data line connected to one of the drain/source electrodes of the main region thin film transistor and one of the drain/source electrodes of the sub region thin film transistor; the other of the drain/source of the main region thin film transistor is connected to the first end of the main region storage capacitor; the other of the drain/source electrodes of the sub-region thin film transistor is connected with the first end of the sub-region storage capacitor and one of the drain/source electrodes of the shared thin film transistor; the other of the drain/source of the shared thin film transistor is connected to a second common voltage; the first common voltage is connected to a second terminal of the main region storage capacitor and/or a second terminal of the sub region storage capacitor.
7. The drive device according to claim 6, wherein the acquisition module includes a scanning unit and an acquisition unit;
the scanning unit is used for scanning the target panel;
the acquisition unit acquires a first data voltage of a first area of the target panel;
the first data voltage is an input voltage of a data signal line in the pixel circuit in the first area.
8. The drive device according to claim 7,
the first regulation and control module is used for reducing the first common voltage of the first area through a preset device when the first data voltage is smaller than a first threshold value and the target panel is abnormal;
the second regulating module is used for recovering the first common voltage of the first area through the predetermined device when the target panel is normal when the first data voltage is equal to a first threshold value.
9. The drive device according to claim 6,
the acquisition module comprises a scanning unit and an acquisition unit;
the scanning unit is used for scanning the target panel;
the acquisition unit acquires the second common voltage of the first area of the target panel;
the second common voltage is the output voltage of the common signal line of the pixel circuit in the first area.
10. The drive device according to claim 9,
the first regulation and control module is used for reducing the first public voltage of the first area through a preset device when the second public voltage is smaller than a second threshold value and the target panel is abnormal;
the second regulation and control module is used for recovering the first common voltage of the first area through the predetermined device when the target panel is normal when the second common voltage is equal to a second threshold value.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910283190.5A CN110111753B (en) | 2019-04-10 | 2019-04-10 | Driving method and device of display panel |
| PCT/CN2019/086122 WO2020206786A1 (en) | 2019-04-10 | 2019-05-09 | Driving method and apparatus for display panel, and controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910283190.5A CN110111753B (en) | 2019-04-10 | 2019-04-10 | Driving method and device of display panel |
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| JP3027126B2 (en) * | 1996-11-26 | 2000-03-27 | 松下電器産業株式会社 | Liquid crystal display |
| JP5328169B2 (en) * | 2007-02-28 | 2013-10-30 | キヤノン株式会社 | Imaging apparatus and radiation imaging system |
| CN101311781B (en) * | 2007-05-25 | 2012-02-08 | 群康科技(深圳)有限公司 | LCD device and its public voltage drive method |
| CN201293901Y (en) * | 2008-11-24 | 2009-08-19 | 上海广电光电子有限公司 | Liquid crystal display panel |
| CN102842280B (en) * | 2012-08-31 | 2016-03-30 | 京东方科技集团股份有限公司 | A kind of common electric voltage compensating circuit, method and liquid crystal indicator |
| CN103065591A (en) * | 2012-09-17 | 2013-04-24 | 友达光电股份有限公司 | Dynamic switching method of liquid craystal display panel drive modes |
| CN103065594B (en) * | 2012-12-14 | 2017-04-12 | 深圳市华星光电技术有限公司 | Data driving circuit, liquid crystal display device and driving method |
| KR102171259B1 (en) * | 2014-06-10 | 2020-10-29 | 삼성전자 주식회사 | Liquid crystal display device for improving crosstalk characteristic |
| KR20160055368A (en) * | 2014-11-07 | 2016-05-18 | 삼성디스플레이 주식회사 | Display apparatus and method of driving the same |
| CN104882104B (en) * | 2015-05-11 | 2017-05-31 | 深圳市华星光电技术有限公司 | A kind of liquid crystal display panel and device |
| CN106097964B (en) * | 2016-08-22 | 2018-09-18 | 京东方科技集团股份有限公司 | Pixel circuit, display panel, display equipment and driving method |
| CN106782427B (en) * | 2017-03-31 | 2019-09-27 | 深圳市华星光电技术有限公司 | The data voltage method of adjustment and device of liquid crystal display panel |
| CN106847226B (en) * | 2017-04-13 | 2019-04-02 | 深圳市华星光电半导体显示技术有限公司 | The best method for adjusting common voltage of 3T pixel |
| CN107274851A (en) * | 2017-08-14 | 2017-10-20 | 京东方科技集团股份有限公司 | display panel and its driving method and display device |
| CN107464537A (en) * | 2017-08-18 | 2017-12-12 | 深圳市华星光电技术有限公司 | Driving method for liquid crystal display panel |
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