CN113450732B - Pixel circuit, driving method thereof, display device and electronic equipment - Google Patents
Pixel circuit, driving method thereof, display device and electronic equipment Download PDFInfo
- Publication number
- CN113450732B CN113450732B CN202010220495.4A CN202010220495A CN113450732B CN 113450732 B CN113450732 B CN 113450732B CN 202010220495 A CN202010220495 A CN 202010220495A CN 113450732 B CN113450732 B CN 113450732B
- Authority
- CN
- China
- Prior art keywords
- charging voltage
- pixel
- period
- unit
- pixel unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The embodiment of the application provides a pixel circuit, a driving method thereof, a display device and electronic equipment, wherein the pixel circuit comprises a pixel unit and a grid driving unit, the grid driving unit is electrically connected with the pixel unit, and the grid driving unit is used for inputting a first charging voltage to the pixel unit in a first time period of each display period and inputting a second charging voltage to the pixel unit in a second time period of each display period so as to charge the pixel unit; wherein the first charging voltage is greater than the second charging voltage. Because the first charging voltage is larger than the second charging voltage, the pixel voltage of the pixel unit in the first time period can be improved, so that the charging speed of the pixel unit can be improved, and the display effect of the display device can be improved.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a pixel circuit, a driving method thereof, a display device, and an electronic device.
Background
The pixel driving circuit is a circuit structure for writing data voltages to pixel electrodes in a pixel unit in a liquid crystal display device (Liquid Crystal Display, abbreviated as LCD).
Along with the improvement of the resolution of the display device, the refresh frequency of the pixel units is higher and higher, so that the time for charging the pixel electrodes by the pixel circuits is shorter and shorter, and the phenomenon of uneven brightness of the display device caused by insufficient charging of the pixel electrodes is easy to occur.
Disclosure of Invention
The embodiment of the application provides a pixel circuit, a driving method thereof, a display device and electronic equipment, which can improve the charging speed of a pixel unit, thereby improving the display effect of the display device.
In a first aspect, embodiments of the present application provide a pixel circuit, including:
a pixel unit; a kind of electronic device with high-pressure air-conditioning system
The grid driving unit is electrically connected with the pixel unit and is used for inputting a first charging voltage to the pixel unit in a first time period of each display period and inputting a second charging voltage to the pixel unit in a second time period of each display period so as to charge the pixel unit;
wherein the first charging voltage is greater than the second charging voltage.
In a second aspect, an embodiment of the present application further provides a display device, where the display device includes a pixel circuit, and the pixel circuit is the above pixel circuit.
In a third aspect, an embodiment of the present application further provides an electronic device, including a display device, where the display device is the display device.
In a fourth aspect, embodiments of the present application further provide a driving method of a pixel circuit, where the pixel circuit includes a pixel unit and a gate driving unit, and the gate driving unit is electrically connected to the pixel unit; the method comprises the following steps:
when the pixel circuit works, the grid driving unit inputs a first charging voltage in a first time period of each display period;
the gate driving unit inputs a second charging voltage in a second period of each display period;
wherein the first charging voltage is greater than the second charging voltage.
According to the pixel circuit, the first charging voltage is input to the pixel unit in the first time period of the display period by the grid driving unit, and the second charging voltage is input to the pixel unit in the second time period of the display period, and the first charging voltage is larger than the second charging voltage, so that the pixel voltage of the pixel unit in the first time period can be improved, the charging speed of the pixel unit can be improved, and the display effect of the display device can be improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present application.
Fig. 2 is a schematic diagram of a first structure of a pixel circuit according to an embodiment of the present application.
Fig. 3 is a schematic diagram of a second structure of a pixel circuit according to an embodiment of the present application.
Fig. 4 is a first charge waveform diagram of a pixel circuit on a time axis according to an embodiment of the present application.
Fig. 5 is a second charge waveform diagram of the pixel circuit on the time axis according to the embodiment of the present application.
Fig. 6 is a third charge waveform diagram of the pixel circuit on the time axis according to the embodiment of the present application.
Fig. 7 is a flow chart of a driving method of a pixel circuit according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The electronic device may be, but is not limited to, a computer, a mobile phone, a tablet, a smart watch, a smart bracelet, a monitor, etc., and the electronic device includes a display device for displaying a picture.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a display device provided in an embodiment of the present application, and the display device 100 may be, but is not limited to, an electronic device having a liquid crystal display, such as a computer, a mobile phone, a tablet, a smart watch, a smart bracelet, a monitor, etc., and the display device 100 in the embodiment of the present application is illustrated in detail by taking a mobile phone as an example.
The display device 100 includes a display panel 10 and a pixel circuit 20, wherein the pixel circuit 20 is electrically connected to the display panel 10, and the pixel circuit 20 is used for charging the display panel 10 to realize that the display panel 10 displays images.
Referring to fig. 2, fig. 2 is a schematic diagram of a first structure of a pixel circuit provided in an embodiment of the present application, the pixel circuit 20 includes a pixel unit 21 and a gate driving unit 22, the gate driving unit 22 is electrically connected to the pixel unit 22, and the gate driving unit 22 is used for charging the pixel unit 22.
The number of the pixel units 21 may be plural, and the plural pixel units 21 are arranged in an array.
It will be appreciated that the pixel circuit 20 further includes Scan Lines (SL), which are traces of voltage signals for turning on and off the thin film transistors, and Data Lines (DL), which are generally pulse signals. The data lines are used to provide wiring for pixel data of liquid crystal display (Liquid Crystal Display, LCD) pixels or Organic Light-Emitting diodes (OLEDs).
The gate driving unit 22 is electrically connected to the pixel units 22 through the scan lines, for example, one scan line may be electrically connected to a plurality of pixel units 22, that is, the gate driving unit 22 may be electrically connected to a plurality of pixel units 22 through one scan line, so that the number of scan lines may be saved.
The number of the scanning lines may be N, where N is a positive integer greater than or equal to 2, and N scanning lines are parallel to each other, and N scanning lines extend from one end to the other end opposite to the one end.
It is understood that N scan lines may extend in the Y-axis direction.
The number of the data lines may be N, where N is a positive integer greater than or equal to 2, the N data lines are parallel to each other, and the N data lines and the N scan lines are perpendicular to each other, for example, when the N scan lines extend in the X-axis direction, the N data lines may extend in the Y-axis direction, and when the N scan lines extend in the Y-axis direction, the N data lines may extend in the X-axis direction.
It is understood that the number of data lines may be equal to the number of scan lines, for example, when the number of scan lines is 20, the number of data lines is 20.
The gate driving unit 22 may employ a gate driving chip, which is used to drive the switching power supply to turn on and off. For example, before the switching power supply is turned on, the capacitor needs to be charged, and when the capacitor voltage is greater than the threshold voltage, the switching power supply starts to be turned on, and the faster the capacitor voltage reaches the threshold voltage, the better the display effect of the display device. Therefore, the conventional common high level is used for charging the capacitor, the charging speed is low, and the phenomenon of uneven brightness of the display device caused by insufficient charging of the pixel electrode is easy to occur.
In order to solve the above-mentioned problem, the present application inputs a first charging voltage to the pixel unit 21 in a first period of each display period and inputs a second charging voltage to the pixel unit 22 in a second period of each display period through the gate driving unit 22, so as to charge the pixel unit 21, wherein the first charging voltage is greater than the second charging voltage. Since the first charging voltage is greater than the second charging voltage, the Pixel Voltage (VP) of the Pixel unit 21 in the first period of time can be increased, so that the Pixel voltage can quickly reach the voltage threshold, and thus the charging speed of the Pixel unit 21 can be increased, the phenomenon that the Pixel unit 21 is not sufficiently charged and the display device 100 is uneven due to the low charging speed is avoided, and the display effect of the display device 100 can be improved.
It can be appreciated that the second charging voltage may be greater than the first charging voltage, so that the pixel voltage of the pixel unit 21 in the second period of time may be increased, and thus the charging speed of the pixel unit 21 may be increased, and further the display effect of the display device 100 may be improved. The magnitude of the first charging voltage and the second charging voltage is not limited, and the first charging voltage and the second charging voltage are different.
The process of displaying the picture by the display device 100 may include a plurality of display periods, and the display periods may include a first period (T1), a second period (T2), and a third period (T3), where the display period is an on time of the scan line, and the on time of the scan line is a time required for the switching power supply to be turned on, that is, a time required for the pixel voltage to reach the threshold voltage.
It will be appreciated that the gate drive unit 22 is also configured to stop charging the pixel cells for the third period of each display period.
It should be noted that in the description of the present application, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first", "second", "third" may include one or more of the stated features, either explicitly or implicitly.
Referring to fig. 3, fig. 3 is a schematic diagram of a second structure of a pixel circuit according to an embodiment of the present application. The gate driving unit 22 includes a timing controller 221 and a gate driving subunit 222, the gate driving subunit 222 is electrically connected to the timing controller 221 and the pixel unit 21, respectively, the timing controller 221 is configured to generate a first clock signal during a first period of each display period, and generate a second clock signal during a second period of each display period, and the gate driving subunit 222 is configured to input the first charging voltage to the pixel unit 21 according to the first clock signal, and input the second charging voltage to the pixel unit 21 according to the second clock signal.
The timing controller 221 is configured to generate a Clock signal (CK) that forms a rectangular wave on a time axis. The gate driving sub-unit 222 generates a first charging voltage when the first clock signal is received in the first period of each display period and generates a second charging voltage when the second clock signal is received in the second period of each display period, and the gate driving sub-unit 222 inputs the first charging voltage to the pixel unit 21 in the first period and inputs the second charging voltage to the pixel unit 21 in the second period to charge the pixel unit 21. The clock controller 221 of the embodiment of the present application may generate two clock signals, that is, a first clock signal and a second clock signal, where the first clock signal includes a first high level, and the second clock signal includes a second high level, and the first high level is greater than the second high level. It is understood that the second high level may also be greater than the first high level.
It will be appreciated that the clock controller 221 may also generate three clock signals, i.e. a first clock signal, a second clock signal and a third clock signal, the clock controller 221 generating the first clock signal during a first period of each display period, the second clock signal during a second period of each display period, and the third clock signal during a third period of each display period, wherein the first clock signal comprises a first high level, the second clock signal comprises a second high level, the third clock signal comprises a low level, and the gate driving unit 22 is configured to stop charging the pixel unit 21 when the third clock signal is used. For example, the gate driving unit 22 does not generate the first charging voltage and the second charging voltage when receiving the third clock signal for the third period of time, and stops charging the pixel unit 21.
It should be noted that the clock controller 221 may be a part of the gate driving unit 22, or the clock controller 221 may be a separate component, for example, the clock controller 221 may be electrically connected to the gate driving unit 22.
The gate driving sub-unit 222 may be array substrate row scanning driving units (Gate Driver on Array, GOA), each of which is configured to input the first charging voltage and the second charging voltage to the pixel unit 21 connected thereto.
It is understood that the number of the clock controller 221 and the gate driving subunit 222 may be N, where N is a positive integer greater than or equal to 2. Each clock controller 221 is electrically connected to a gate drive subunit 222.
The N GOA units are arranged along the Y-axis direction, and the N GOA units are electrically connected step by step from top to bottom, for example, the topmost GOA unit is a first GOA unit, the second GOA unit is located below the first GOA unit and is electrically connected with the first GOA unit, the third GOA unit is located below the second GOA unit and is electrically connected with the second GOA unit, and the nth GOA unit is located below and is electrically connected with the (N-1) th GOA unit.
And, each GOA unit is electrically connected to one pixel unit 21 to input the first charging voltage and the second charging voltage output from the GOA unit to the corresponding pixel unit 21, for example: the first GOA unit is electrically connected with the first pixel unit, the first GOA unit inputs the output first charging voltage and the second charging voltage to the first pixel unit, the second GOA unit is electrically connected with the second pixel unit, the second GOA unit inputs the output first charging voltage and the second charging voltage to the corresponding second pixel unit, the N-th GOA unit is electrically connected with the N-th pixel unit, and the N-th GOA unit inputs the output first charging voltage and the second charging voltage to the corresponding N-th pixel unit.
It should be noted that, in the embodiment of the present application, the first charging voltages and the second charging voltages output by all the GOA units are the same, for example, the first charging voltage output by the first GOA unit is 12V, the second charging voltage is 8V, the first charging voltage output by the second GOA unit is also 12V, and the second charging voltage is also 8V.
Referring to fig. 4, fig. 4 is a first charging waveform diagram of the pixel circuit on a time axis according to the embodiment of the present application. The first charging voltage is greater than the second charging voltage, for example, the ratio of the first charging voltage to the second charging voltage may be 2:1, which not only increases the charging speed of the pixel unit 21, but also does not increase the load of the pixel circuit 20, so that the display effect of the display device 100 may be improved.
It can be appreciated that the ratio of the first charging voltage to the second charging voltage may be 3:2, which is not limited in the embodiment of the present application, as long as the charging speed of the pixel circuit 20 to the pixel unit 21 can be improved, and is the protection scope of the embodiment of the present application.
The gate driving unit 22 may input a first charging voltage to the pixel unit 21 during a first period of each display period and input a second charging voltage to the pixel unit 21 during a second period of each display period, and it is understood that the gate driving unit 20 may also input a second charging voltage to the pixel unit 21 during the first period of each display period and input the first charging voltage to the pixel unit 21 during the second period of each display period.
Referring to fig. 5, fig. 5 is a second charging waveform diagram of the pixel circuit on a time axis according to the embodiment of the present application. In the first period, the first charging voltage is gradually increased, so that the charging speed of the pixel circuit to the pixel unit 21 can be better improved, and the display effect of the display device 100 can be better improved.
Wherein the first charging voltage is stepped up, for example, the pixel is charged with 10V for one third of the first period, the pixel is charged with 12V for two thirds of the first period, and the pixel is charged with 15V for the last third of the first period.
The first charging voltage is gradually increased, and it can be understood that the first charging voltage can be gradually increased in steps, the first charging voltage can also be linearly increased, and the first charging voltage can also be gradually increased in curves, wherein the first charging voltage can enable the display panel to display pictures more uniformly in the curve increasing mode. The incremental curve may be J-shaped or S-shaped.
The voltage required for the data line to transfer data to the pixel unit 21 may be the second charging voltage, or may be a voltage value lower than the second charging voltage.
In addition, since the first charging voltage for charging the pixel unit in the first period is greater than the second charging voltage in the second period, the pixel voltage can be quickly reached to the preset voltage value in the first period, so that the pixel unit 21 can be driven at a higher refresh rate, which is helpful for improving the display effect of the display device 100.
Referring to fig. 6, fig. 6 is a third charging waveform diagram of the pixel circuit on the time axis according to the embodiment of the present application. Each display period includes a first period, a second period and a third period, where the charging speed of the first period is greater than that of the second period, and the time of the first period is greater than or equal to that of the second period, so that the charging speed of the pixel circuit to the pixel unit 21 can be further improved, and further, the display effect of the display device 100 can be improved.
Wherein, the ratio of the duration of the first time period to the duration of the second time period may be 3:2, the charging speed of the pixel circuit to the pixel unit can be further improved, and further, the display effect of the display device 100 can be better improved.
It will be appreciated that the ratio of the duration of the first period to the duration of the second period may also be 5:4, the charging speed of the pixel circuit to the pixel unit 21 can be increased without increasing the load of the pixel circuit. The ratio of the duration of the first time period to the duration of the second time period in the embodiment of the present application is not limited to the above example, and other situations that the charging speed of the pixel circuit 20 to the pixel unit 21 can be improved without increasing the load of the pixel circuit all belong to the protection scope of the embodiment of the present application.
It can be appreciated that when the first charging voltage is greater than the second charging voltage, the duration of the first period may also be less than the duration of the second period, and the charging speed of the pixel circuit to the pixel unit may be increased without increasing the load of the pixel circuit. For example, when the ratio of the first charging voltage to the second charging voltage is 2:1, the ratio of the duration of the first period to the duration of the second period is 2:3.
In this embodiment of the present application, the ratio of the first charging voltage to the second charging voltage, the ratio of the duration of the first period to the duration of the second period are not limited to the above examples, and other situations that the charging speed of the pixel circuit to the pixel unit can be improved without increasing the load of the pixel circuit all belong to the protection scope of the embodiment of the present application.
It can be appreciated that when the ratio of the duration of the first period to the duration of the second period is 3:2, the first charging voltage is gradually increased in the first period, so that the charging speed of the pixel circuit 20 to the pixel unit 21 can be better improved, and the display effect of the display device 100 can be improved.
Wherein the first charging voltage is stepped up during said first period, for example, during one third of the first period, the pixel is charged with 10V, during two thirds of the first period, the pixel is charged with 12V, and during the last third of the first period, the pixel is charged with 15V.
The first charging voltage is gradually increased, which can be understood that the first charging voltage can be gradually increased in steps, the first charging voltage can also be linearly increased, and the first charging voltage can also be understood that the first charging voltage is gradually increased in curves, wherein the first charging voltage is gradually increased in curves, so that the display panel can display pictures more uniformly. The incremental curve may be J-shaped or S-shaped.
An embodiment of the present application further provides a method for driving a pixel circuit, referring to fig. 7, fig. 7 is a schematic flow chart of the method for driving a pixel circuit, where the method includes:
s101, when the pixel circuit works, the grid driving unit inputs a first charging voltage in a first time period of each display period.
S102, the pixel unit inputs a second charging voltage in a second time period of each display period; wherein the first charging voltage is greater than the second charging voltage.
According to the driving method of the pixel circuit, the grid driving unit inputs the first charging voltage to the pixel unit in the first time period of each display period, and inputs the second charging voltage to the pixel unit in the second time period of each display period, and the first charging voltage is larger than the second charging voltage, so that the pixel voltage of the pixel unit in the first time period can be improved, the charging speed of the pixel unit can be improved, and the display effect of the display device can be improved.
The pixel circuit, the driving method thereof, the display device and the electronic device provided by the embodiment of the application are described in detail above. Specific examples are set forth herein to illustrate the principles and embodiments of the present application, with the description of the examples given above only to assist in understanding the present application. Meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.
Claims (10)
1. A pixel circuit, comprising:
a pixel unit; a kind of electronic device with high-pressure air-conditioning system
The grid driving unit is electrically connected with the pixel unit and is used for inputting a first charging voltage to the pixel unit in a first time period of each display period and inputting a second charging voltage to the pixel unit in a second time period of each display period so as to charge the pixel unit;
the first time period comprises a plurality of first sub-time periods, the first charging voltage in each first sub-time period corresponds to different voltage values and is increased gradually, and the first charging voltage is larger than the second charging voltage;
the grid driving unit is connected with the pixel unit through a scanning line;
the duration of the first time period is longer than the duration of the second time period;
the gate driving unit includes: the time sequence controller and the grid driving subunit are N in number, and N is a positive integer greater than or equal to 2; each clock controller is electrically connected with one grid driving subunit, each grid driving subunit is electrically connected with one pixel unit so as to input a first charging voltage and a second charging voltage to the corresponding pixel unit, and each grid driving subunit outputs the same first charging voltage.
2. The pixel circuit of claim 1, wherein the timing controller is configured to generate a first clock signal during a first time period of each display period and to generate a second clock signal during a second time period of each display period; a kind of electronic device with high-pressure air-conditioning system
The grid driving subunit is respectively and electrically connected with the time schedule controller and the pixel unit, and is used for inputting the first charging voltage to the pixel unit according to the first clock signal and inputting the second charging voltage to the pixel unit according to the second clock signal.
3. The pixel circuit of claim 2, wherein the first clock signal comprises a first high level and the second clock signal comprises a second high level, wherein the first high level is greater than the second high level.
4. The pixel circuit of claim 2, wherein the gate drive unit is further configured to stop charging the pixel cell for a third period of the each display period.
5. The pixel circuit of claim 4, wherein the timing controller is further configured to generate a third clock signal during a third time period of each display period, and wherein the gate drive subunit is further configured to stop charging the pixel cell based on the third clock signal.
6. The pixel circuit of claim 5, wherein the third clock signal comprises a low level.
7. The pixel circuit according to any one of claims 1-6, wherein a ratio of a duration of the first period to a duration of the second period is 3:2.
8. a display device comprising a pixel circuit according to any one of claims 1 to 7.
9. An electronic device comprising a display device according to claim 8.
10. The driving method of the pixel circuit is applied to the pixel circuit and is characterized in that the pixel circuit comprises a pixel unit and a grid driving unit, and the grid driving unit is electrically connected with the pixel unit; the driving method of the pixel circuit comprises the following steps:
the grid driving unit inputs a first charging voltage to the pixel unit in a first time period of each display period;
the gate driving unit inputs a second charging voltage to the pixel unit in a second period of each display period;
the first time period comprises a plurality of first sub-time periods, the first charging voltage in each first sub-time period corresponds to different voltage values and is increased gradually, and the first charging voltage is larger than the second charging voltage;
the grid driving unit is connected with the pixel unit through a scanning line;
the time length of the first time period is greater than or equal to the time length of the second time period;
the gate driving unit includes: the time sequence controller and the grid driving subunit are N in number, and N is a positive integer greater than or equal to 2; each clock controller is electrically connected with one grid driving subunit, each grid driving subunit is electrically connected with one pixel unit so as to input a first charging voltage and a second charging voltage to the corresponding pixel unit, and each grid driving subunit outputs the same first charging voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010220495.4A CN113450732B (en) | 2020-03-25 | 2020-03-25 | Pixel circuit, driving method thereof, display device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010220495.4A CN113450732B (en) | 2020-03-25 | 2020-03-25 | Pixel circuit, driving method thereof, display device and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113450732A CN113450732A (en) | 2021-09-28 |
| CN113450732B true CN113450732B (en) | 2023-06-02 |
Family
ID=77807499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010220495.4A Active CN113450732B (en) | 2020-03-25 | 2020-03-25 | Pixel circuit, driving method thereof, display device and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113450732B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114519985A (en) * | 2022-01-21 | 2022-05-20 | 重庆惠科金渝光电科技有限公司 | Pixel charging method and liquid crystal display device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI383352B (en) * | 2007-10-18 | 2013-01-21 | Chunghwa Picture Tubes Ltd | Low power driving method and driving signal generation method for image display apparatus |
| WO2011162057A1 (en) * | 2010-06-25 | 2011-12-29 | シャープ株式会社 | Scanning signal line drive circuit and display device provided with same |
| CN102779494B (en) * | 2012-03-29 | 2015-08-05 | 北京京东方光电科技有限公司 | A kind of gate driver circuit, method and liquid crystal display |
| KR101952936B1 (en) * | 2012-05-23 | 2019-02-28 | 삼성디스플레이 주식회사 | Display device and driving method thereof |
| CN104778931A (en) * | 2015-03-27 | 2015-07-15 | 京东方科技集团股份有限公司 | Gate drive method of pixel transistors and gate drive circuit |
| CN105489190B (en) * | 2016-02-15 | 2019-03-15 | 京东方科技集团股份有限公司 | Shifting deposit unit and its driving method, gate driving circuit, array substrate |
-
2020
- 2020-03-25 CN CN202010220495.4A patent/CN113450732B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113450732A (en) | 2021-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10741139B2 (en) | Goa circuit | |
| US11127478B2 (en) | Shift register unit and driving method thereof, gate driving circuit, and display device | |
| JP6227530B2 (en) | Gate driver integrated circuit, shift register and display screen | |
| CN101383133B (en) | Shifting cache unit for eliminating ghost | |
| JP4425556B2 (en) | DRIVE DEVICE AND DISPLAY MODULE HAVING THE SAME | |
| EP1923859A2 (en) | Liquid crystal display and method of driving the same | |
| KR101264709B1 (en) | A liquid crystal display device and a method for driving the same | |
| US10748465B2 (en) | Gate drive circuit, display device and method for driving gate drive circuit | |
| US8106871B2 (en) | Liquid crystal display and driving method thereof | |
| US11024399B2 (en) | Shift register unit, gate drive circuit, display device and driving method | |
| US20210256927A1 (en) | Circuit and method for preventing screen flickering, drive circuit for display panel, and display apparatus | |
| KR20180057975A (en) | Shift resister, image display device containing the same and method of driving the same | |
| CN109584825B (en) | Display driving assembly and display device | |
| US20080252622A1 (en) | Systems for displaying images and driving method thereof | |
| CN114677986A (en) | Display device | |
| US20120032941A1 (en) | Liquid crystal display device with low power consumption and method for driving the same | |
| CN113450732B (en) | Pixel circuit, driving method thereof, display device and electronic equipment | |
| US9805683B2 (en) | Gate driver on array circuit for different resolutions, driving method thereof, and display device including the same | |
| CN108986757B (en) | GOA circuit driving method and GOA circuit driving device | |
| CN113990265B (en) | Driving method and driving circuit thereof | |
| TW201513086A (en) | Power saving method and related wave-shaping circuit | |
| KR102051389B1 (en) | Liquid crystal display device and driving circuit thereof | |
| CN108399905B (en) | Display driving circuit and display driving method | |
| JP2006011004A (en) | Liquid crystal display device, and its driving circuit and driving method | |
| CN115019741B (en) | Array grid driving unit, circuit, driving method and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |