CN117995083A - Display panel and driving method thereof - Google Patents
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- CN117995083A CN117995083A CN202311810185.8A CN202311810185A CN117995083A CN 117995083 A CN117995083 A CN 117995083A CN 202311810185 A CN202311810185 A CN 202311810185A CN 117995083 A CN117995083 A CN 117995083A
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
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Abstract
The application discloses a display panel and a driving method thereof, wherein the driving method of the display panel provides a reset signal for a corresponding display pixel through a reset line, and the reset signal comprises a plurality of effective levels; temporarily starting a display period for display by each row of the display pixels at each active level in the reset signal; according to the application, the independent control of each row of display pixels is realized by arranging the independent reset line for each row of display pixels, so that the light-emitting time of each row of display pixels can not be influenced by the whole scanning time, and the display effect of the display panel can be improved conveniently.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a driving method thereof.
Background
Along with the increasing requirements of direct display products on image quality, the driving mode of the direct display products is also required to be continuously improved. Most direct display products on the market at present use a PAM (Pulse Amplitude Modulation:pulse amplitude modulation) driving mode or a PWM (Pulse Width Modulation:pulse width modulation) driving mode, the PWM controls brightness change by adjusting the duty ratio of the LED charging time, the data voltage amplitude is kept unchanged, but due to the dark state, the luminous efficiency is relatively low, and flicker can be generated; PAM driving controls brightness variation by adjusting peak current amplitude of LEDs within one frame time, but has a problem of poor uniformity of small current light efficiency of LEDs due to a limited number of color depth bits. In order to improve the disadvantages of both, PHM (pam+pwm hybrid drive) driving is generated, for example, PWM driving is used at low gray scales, and PAM driving is used at high gray scales.
PHM driving in the current 5T2C/7T2C pixel circuit controls a driving transistor through PAM_data to realize current change, and PWM_data controls the on and off of a discharging transistor to realize charging time change; after the PAM_data and the PWM_data of all the rows are written, the light is emitted synchronously, the light emitting duty ratio is influenced by the data writing time, the light emitting duty ratio is compressed seriously along with the increase of the pixel resolution, the light emitting duration is influenced, and in the low gray scale, the refresh rate of the light emitting stage is lower, the flicker and other problems are easy to occur, and the display effect of the display panel is further influenced.
Disclosure of Invention
The application provides a driving method of a display panel and the display panel, which can effectively improve the display effect of the display panel.
The application provides a driving method of a display panel, wherein the display panel comprises a plurality of rows of display pixels, each row of display pixels is correspondingly connected with a reset line, and the time for displaying a frame of picture by each row of display pixels comprises a plurality of display periods; the driving method of the display panel comprises the following steps: providing reset signals for the corresponding display pixels by the reset lines, wherein the reset signals comprise a plurality of effective levels; each row of display pixels starts a display period to display according to each active level in the reset signal.
In some embodiments, the reset signal is further used to control the light emitting duration of the display pixels in one display period.
In some embodiments, the display period includes a reset phase, a data writing phase, and a light emitting phase, an active level of a reset signal is a high level, and a voltage corresponding to the high level is a first voltage; temporarily starting a display period for each row of display pixels at each active level in the reset signal comprises: in a reset phase, resetting the display pixels by a reset signal through a first voltage; in the data writing stage, the reset signal is switched from high level to low level to maintain the data signal written by the display pixel; the voltage corresponding to the low level is a second voltage; in the light-emitting stage, the reset signal is gradually increased from the second voltage to a preset voltage so that the display pixel is reset to stop light emission; wherein the preset voltage is equal to the first voltage.
In some embodiments, the driving method of the display panel includes a reset phase, a data writing phase, and a light emitting phase, the light emitting phase including a first sub-phase and a second sub-phase; the effective level of the reset signal is a high level, and the voltage corresponding to the high level is a first voltage; temporarily starting a display period for each row of display pixels at each active level in the reset signal comprises: in a reset phase, resetting the display pixels by a reset signal through a first voltage; in the data writing stage, the reset signal is switched from high level to low level to maintain the data signal written by the display pixel; the voltage corresponding to the low level is a second voltage; in the first sub-stage, the reset signal is gradually increased from the second voltage to a preset voltage so that the display pixel is reset and light emission is stopped; in the second sub-stage, the reset signal is gradually increased from the preset voltage to the first voltage so that the display pixel continuously does not emit light; wherein the preset voltage is equal to the first voltage.
In some embodiments, the first voltages in each display period are the same or at least partially the same.
The embodiment of the application also provides a display panel which comprises a plurality of rows of display pixels, wherein each row of display pixels is correspondingly connected with a reset line, the reset lines provide reset signals for the display pixels of the corresponding row, and the display pixels start a display period to display according to each effective level in the corresponding reset signals.
In some embodiments, the active level of the reset signal is a high level, and the voltage corresponding to the high level is a first voltage, and each subpixel includes a reset module, a data writing module, a driving module, and a light emitting device; the light-emitting device is connected in series between the first power line and the second power line; the driving module is connected with the light-emitting device in series, and drives the light-emitting device to light in a light-emitting stage; the data writing module writes data signals in a data writing stage; the reset module is connected with the reset line and the control end of the driving module, resets the control end potential of the driving module according to the first voltage in the reset stage, and controls the light emitting device to stop lighting according to the reset signal after the light emitting device is lighted.
In some embodiments, the display panel further includes a switching module connected in series with the light emitting device, the switching module being turned off during a reset period and turned on during a light emitting period.
In some embodiments, the display panel includes a reset module including a first switching tube, a second switching tube, and a first capacitor, the data writing module includes a third switching tube, a first end of the first switching tube is connected to the first control line, a second end of the first switching tube is connected to the data line, a third end of the first switching tube is connected to the first end of the second switching tube, one end of the first capacitor is connected to the first end of the second switching tube, the other end of the first capacitor is connected to the reset line, a second end of the second switching tube is connected to the reference line, and a third end of the second switching tube is connected to the control end of the driving module; the first end of the third switching tube is connected with the second control line, the second end of the third switching tube is connected with the data line, and the third end of the third switching tube is connected with the control end of the driving module.
In some embodiments, the display panel further includes a third switching transistor, a first end of the third switching transistor is connected to the third control line, a second end of the third switching transistor is connected to the third end of the driving transistor, and a third end of the third switching transistor is connected to the anode of the light emitting device.
According to the display panel and the driving method thereof, in the driving method of the display panel, the independent control of each row of display pixels is realized by arranging the independent reset line for each row of display pixels, so that the light-emitting time of each row of display pixels can not be influenced by the whole scanning time, the refresh rate of a frame of display picture can be improved by improving the number of the effective levels of the reset signals, and the flicker problem generated during low-gray-scale driving is further improved, so that the display effect of the display panel is improved.
Drawings
The technical solution and other advantageous effects of the present application will be made apparent by the following detailed description of the specific embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present application.
Fig. 2 is a first driving timing chart of a display pixel in a display panel according to an embodiment of the application.
Fig. 3 is a flowchart illustrating a driving method of a display panel according to an embodiment of the application.
Fig. 4 is a schematic flow chart of a first step 200 in the driving method of the display panel according to the embodiment of the application.
Fig. 5 is a second driving timing chart of a display pixel in the display panel according to the embodiment of the application.
Fig. 6 is a second flowchart of step 200 in the driving method of the display panel according to the embodiment of the present application.
Fig. 7 is a schematic structural diagram of a subpixel in a display panel 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 accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Furthermore, the terms "first," "second," and the like, 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, whereby a feature defining "first," "second," or the like, may explicitly or implicitly include one or more features, and in the description of the present invention, a meaning of "a plurality" is two or more, unless otherwise specifically defined.
Referring to fig. 1, the present embodiment provides a display panel 10, where the display panel 10 includes a plurality of rows of display pixels 11, and each row of display pixels 11 is correspondingly connected to a reset line. For example, the display pixels 11 are arranged in 6 rows, and then 6 independent reset lines are correspondingly arranged, and each reset line is correspondingly connected with one row of display pixels 11. As shown in fig. 2, the time for displaying one frame of image by each row of display pixels 11 includes a plurality of display periods M1.
Referring to fig. 3, the present application further provides a driving method of the display panel 10 based on the above display panel, which includes:
100. providing reset signals for the corresponding display pixels by the reset lines, wherein the reset signals comprise a plurality of effective levels;
200. each row of display pixels starts a display period to display according to each active level in the reset signal.
In the application, each row of display pixels 11 is correspondingly connected with one reset line, each reset line provides corresponding reset signals for the corresponding display pixels 11, and each row of display pixels 11 is mutually independently controlled by the corresponding reset signals. The reset signal has a plurality of active levels, and when each active level is active, the temporary display pixel 11 starts displaying one display period M1, and when the next active level is active, the current display period M1 ends and starts displaying the next display period M1. That is, the display pixels 11 update the display period M1 according to the active level of the reset signal, and if the number of active levels is greater, the corresponding display pixels 11 display more display periods M1 of one frame of picture, so that the refresh rate of the display of the frame of picture can be effectively improved, so as to improve the flicker problem generated during the low-gray-scale driving.
That is, in the present application, independent control of each row of display pixels 11 is achieved by providing an independent reset line for each row of display pixels 11, so that the light emission time of each row of display pixels 11 can be made independent of the entire scanning time. The refresh rate of a frame of display picture can be improved by increasing the number of the effective levels of the reset signals, so that the flicker problem generated during low-gray-scale driving is improved, and the display effect of the display panel 10 is improved.
With continued reference to fig. 2, in some embodiments, the display period M1 includes a reset phase M1, a data writing phase M2, and a light emitting phase M3, the effective level of the reset signal is a high level, and the voltage corresponding to the high level is a first voltage V1; specifically, referring to fig. 4 together, temporarily starting a display period for each active level of the reset signal for each row of display pixels 11 includes:
210. in a reset phase, resetting the display pixels by a reset signal through a first voltage;
220. In the data writing stage, the reset signal is switched from high level to low level to maintain the data signal written by the display pixel; the voltage corresponding to the low level is a second voltage;
230. In the light-emitting stage, the reset signal is gradually increased from the second voltage to a preset voltage so that the display pixel is reset to stop light emission; wherein the preset voltage is equal to the first voltage.
In the application, the first voltage V1 of the reset signal in the reset phase m1 resets the display pixel 11; in the data writing stage m2, the reset signal is switched from the high level to the low level to stop the reset so as to maintain the data signal written by the display pixel 11, and the subsequent display pixel 11 is ensured to emit light. The second voltage V2 in the present embodiment may be 0V. At the time of entering the light emitting stage M3, the voltage of the reset signal gradually rises from the second voltage V2, and when the voltage of the reset signal rises to the second voltage V2, the display pixel 11 stops emitting light, and the display period M1 ends. Then, the display pixel 11 enters the display of the next display period M1, and the display pixel 11 is reset again by the second voltage V2. Thus, by setting a plurality of active levels of the reset signal, it is possible to realize a plurality of refresh display of the display pixels 11 within one frame of the display screen, so that the refresh rate at the time of low-gradation driving is improved, and the display effect of the display panel 10 is improved.
As an embodiment, the reset signal in the present application is also used to control the light emission duration of the display pixel 11 in one display period M1. Specifically, if the preset voltage is the first voltage V1, the light emitting duration of the light emitting stage m3, that is, the duration of m3 in fig. 2, can be adjusted by changing the speed at which the second voltage V2 rises to the first voltage V1.
Referring to fig. 5 and 6 together, in some embodiments, the light-emitting phase M3 includes a first sub-phase M31 and a second sub-phase M32, and temporarily starting a display period M1 for each row of display pixels 11 at each active level in the reset signal includes:
201. in a reset phase, resetting the display pixels by a reset signal through a first voltage;
202. in the data writing stage, the reset signal is switched from high level to low level to maintain the data signal written by the display pixel; the voltage corresponding to the low level is a second voltage;
203. In the first sub-stage, the reset signal is gradually increased from the second voltage to a preset voltage so that the display pixel is reset and light emission is stopped; in the second sub-stage, the reset signal is gradually increased from the preset voltage to the first voltage so that the display pixel continuously does not emit light; wherein the preset voltage is smaller than the first voltage.
The display pixel 11 is reset by the first voltage V1 of the reset signal at the reset phase m1 in the present application. In the data writing stage m2, the reset signal is switched from the high level to the low level to stop the reset so as to maintain the data signal written by the display pixel 11, and the subsequent display pixel 11 is ensured to emit light. In the light-emitting stage m3, if the preset voltage is smaller than the first voltage V1, in the process that the voltage of the reset signal rises from the second voltage V2 to the first voltage V1, if the voltage of the reset signal rises from the second voltage V2 to the preset voltage, the display pixel 11 emits light at this stage, and the first sub-stage m31 corresponds to the display pixel 11 emitting light; when the voltage of the reset signal rises to be greater than the preset voltage to the first voltage V1, the display pixel 11 does not emit light at this stage, and the second sub-stage m32 corresponds to the display pixel 11 not emitting light. The present application can thus also control the light emission duration, i.e., the duration of m31 in fig. 5, by setting the magnitude of the preset voltage.
In some embodiments, the first voltage V1 in each display period M1 is the same or at least partially the same; that is, the first voltage V1 in each display period M1 may be the same, or the first voltage V1 may be the same between partial display periods M1, whereby the duration of the second sub-phase M32 may be changed.
Referring to fig. 1, 5 and 7, as an embodiment, each row of display pixels 11 includes a plurality of sub-pixels 101, and the plurality of sub-pixels 101 in the row of display pixels 11 share a reset line. Each subpixel 101 includes at least one of a reset module 1, a data writing module 2, a driving module 3, a light emitting device 4, and a switching module 5. The reset module 1 is connected with a reset line, a control end of the driving module 3 and a first control line, the data writing module 2 is connected with the control end of the driving module 3 and a second control line, the driving module 3 is connected with the light emitting device 4 in series, the light emitting device 4 is connected between the first power line and the second power line in series, a first end of the switch module 5 is connected with a third control line, and the switch module 5 is connected with the light emitting device 4 in series.
Wherein, the driving module 3 is connected with the light emitting device 4 in series, and the driving module 3 drives the light emitting device 4 to light up in the light emitting stage; the data writing module 2 is connected with the control end of the driving module 3, and the data writing module 2 writes data signals in a data writing stage; the reset module 1 is connected with the reset line and the control end of the driving module 3, the reset module 1 resets the potential of the control end of the driving module 3 according to the first voltage in the reset stage, and controls the lighting device 4 to stop lighting according to the reset signal after the lighting device is lighted; the switching module 5 is turned off in the reset phase m1 and turned on in the light emitting phase m 3.
Specifically, in the reset phase m1, the reset module 1 resets the control terminal of the driving module 3, i.e., the Q-point potential, according to the first voltage V1 of the reset line; at the same time, the switch module 5 is in an off state; in the data writing stage m2, writing a data signal into the control end of the driving module 3 by the data writing module 2, and switching a reset signal from a high level to a low level so as to maintain the potential of the control end of the driving module 3; in the lighting stage M3, the switch module 5 is turned on to ensure that the lighting passage of the lighting device 4 is turned on, meanwhile, the driving module 3 drives the lighting device 4 to light according to the data signal, and after the reset signal is gradually raised to the preset voltage from the second voltage V2, the reset module 1 is controlled to reset the control terminal potential of the driving module 3, so that the lighting device 4 stops lighting, and one display period M1 is completed. As an embodiment, the reset module 1 includes a first switch tube T1, a second switch tube T2, and a first capacitor C1, where a first end of the first switch tube T1 is connected to a first control line, a second end of the first switch tube T1 is connected to a data line, a third end of the first switch tube T1 is connected to a first end of the second switch tube T2, one end of the first capacitor C1 is connected to a first end of the second switch tube T2, another end of the first capacitor C1 is connected to a reset line, a second end of the second switch tube T2 is connected to a reference line, and a third end of the second switch tube T2 is connected to a control end of the driving module 3; the data writing module 2 comprises a third switching tube T3, a first end of the third switching tube T3 is connected with the second control line, a second end of the third switching tube T3 is connected with the data line, and a third end of the third switching tube T3 is connected with the control end of the driving module 3; the driving module 3 includes a driving transistor T0, a first end of the driving transistor T0 is connected to a third end of the second switching transistor T2 and a third end of the third switching transistor T3, a second end of the driving transistor T0 is connected to the first power line, and a third end of the driving transistor T0 is connected to the light emitting device 4.
In the reset phase M1 in the first display period M1, the first switching transistor T1 is controlled to be turned on by the first control line, and the data line writes a data signal to the control terminal of the second switching transistor T2 through the first switching transistor T1. Then, in the data writing stage m2, the third switching transistor T3 is controlled to be turned on by the second control line, and the data line is a data signal written to the Q point, which is the control terminal of the driving transistor T0. When each frame of display picture starts to display, the first switch tube T1 is controlled to be conducted by the first control line, namely, the first control line participates in control in the first display period M1 of each frame, and then the first switch tube T1 is kept in an off state in each display period M1.
In a specific implementation, the switch module 5 includes a fourth switch tube T4, a first end of the fourth switch tube T4 is connected to the third control line, a second end of the fourth switch tube T4 is connected to the third end of the driving transistor T0, and the third end of the fourth switch tube T4 is connected to the anode of the light emitting device 4. In this embodiment, by setting the fourth switching tube T4 and the third control line for controlling the fourth switching tube T4, the third control line controls the fourth switching tube T4 to be turned off in the reset phase m1 and turned on in the light emitting phase m3, so as to avoid the first end of the fourth switching tube T4 being always in a high level state and turned on, and ensure the working stability of the fourth switching tube T4.
In some embodiments, each sub-pixel 101 further includes a second capacitor C2 and a fifth switching tube T5, one end of the second capacitor C2 is connected to the first end of the driving transistor T0, the other end of the second capacitor C2 is connected to the third end of the driving transistor T0, the first end of the fifth switching tube T5 is connected to the fourth control line, the second end of the fifth switching tube T5 is connected to the third end of the driving transistor T0, and the third end of the fifth switching tube T5 is connected to the reference line.
The reference line is used for providing a reference voltage Vref, the data line is used for providing a PWM data signal or a PAM data signal, the first control line is used for providing a control signal SPWM, the second control line is used for providing a control signal SPAM, the third control line is used for providing a control signal Sense2, the fourth control line is used for providing a control signal Sense1, the reset line is used for providing a reset signal Sweep (n), the first power line is used for providing a first power supply voltage VDD, and the second power supply line is used for providing a second power supply voltage VSS.
In the first display period M1, in the reset phase M1, the control signal SPWM is at a high level, the first switching tube T1 is turned on, the point P is written Vspwm, the second switching tube T2 is turned on, and the point Q is written with the reference voltage Vref; the voltage corresponding to the reset signal is V_Sweep; the first capacitor C1 has a potential difference of left and right ends=v_sweep-Vpwm.
Then, in the data writing stage m2, the control signal SPAM and the control signal Sense1 are at high level, the third switching tube T3 is turned on, vspam is written into the Q point, vq= Vpam; meanwhile, the fourth switching tube T4 and the fifth switching tube T5 are turned on, and vs1=vref, at which time the light emitting device 4 cannot be turned on; meanwhile, the first switching tube T1 is closed, V_Sweep is changed from V1 to V2, and the P point is coupled to be Vp=Vpwm-V_Sweep, so that the second switching tube T2 is closed; the potential difference between the left and right ends of the second capacitor C2= Vpam-Vref.
In the lighting stage m3, the third switching tube T3, the fourth switching tube T4 and the fifth switching tube T5 are disconnected, and the Q point is saved as Vpam; the driving switch tube is conducted, VDD charges to the point S1 through the driving switch tube, the point S is charged to Vs, and the light emitting device 4 emits light; vq= Vpam + (Vs-Vref) at this time. Along with the rising of the potential of the reset signal, the potential of the point P gradually increases until the second switching tube T2 is turned on when (vp+Δvsweep) -Vref > Vth, (Vth is the on voltage of the second switching tube T2, that is, the preset voltage) Q point is pulled down to Vref, the driving transistor T0 is turned off, the light emitting device 4 stops emitting light, and along with the continuous rising of the voltage of the reset signal, the first display period M1 ends when the voltage Vp is Vpwm, at this time, the second switching tube T2 is continuously turned on, and the light emitting device 4 continuously does not emit light.
Then, the display pixel 11 enters a second display period M1 according to the reset signal, the reset phase M1 of the second period has no writing of the PWM data signal, enters the data writing phase M2 when the voltage of the reset signal is changed from V1 to V2, and then enters the light emitting phase M3 when the voltage of the reset signal is gradually increased from V2; when the voltage of the reset signal rises to V1, the display period M1 is ended, and then the next display period M1 is entered, so that the repeated refreshing of low gray scale in a frame of display picture can be realized, the refreshing rate is improved, the duty ratio of the light-emitting time of the low gray scale is further improved, and the problem of flicker of the low gray scale is solved; the display pixels 11 in each row start to emit light after the data is written, and each row is independently controlled, so that the light emission time is not affected by the whole scanning time.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The driving method of the display panel provided by the embodiment of the application is described in detail, and specific examples are applied to illustrate the principle and implementation of the application, and the description of the above embodiments is only used for helping to understand the technical scheme and core idea of the application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (10)
1. The driving method of the display panel is characterized in that the display panel comprises a plurality of rows of display pixels, each row of display pixels is correspondingly connected with a reset line, and the time for displaying a frame of picture by each row of display pixels comprises a plurality of display periods; the driving method of the display panel comprises the following steps:
Providing a reset signal for the corresponding display pixel by the reset line, the reset signal including a plurality of active levels;
each row of the display pixels starts a display period according to each of the active levels in the corresponding reset signal.
2. The driving method of a display panel according to claim 1, wherein the reset signal is further used to control a light emission period of the display pixels in one of the display periods.
3. The method according to claim 2, wherein the display period includes a reset phase, a data writing phase, and a light emitting phase, an active level of the reset signal is a high level, and a voltage corresponding to the high level is a first voltage; temporarily starting a display period for each of said display pixels of each row at each of said active levels in said reset signal comprises:
resetting the display pixels by the reset signal through the first voltage in the reset phase;
In the data writing stage, the reset signal is switched from the high level to the low level to maintain the data signal written by the display pixel; the voltage corresponding to the low level is a second voltage;
in the light-emitting stage, the reset signal is gradually increased from the second voltage to a preset voltage so that the display pixel is reset to stop light emission; wherein the preset voltage is equal to the first voltage.
4. The driving method of a display panel according to claim 2, wherein the display period includes a reset phase, a data writing phase, and a light emitting phase, the light emitting phase including a first sub-phase and a second sub-phase; the effective level of the reset signal is a high level, and the voltage corresponding to the high level is a first voltage; temporarily starting a display period for each of said display pixels of each row at each of said active levels in said reset signal comprises:
resetting the display pixels by the reset signal through the first voltage during the reset phase;
In the data writing stage, the reset signal is switched from the high level to the low level to maintain the data signal written by the display pixel; the voltage corresponding to the low level is a second voltage;
In the first sub-stage, the reset signal is gradually increased from the second voltage to a preset voltage so that the display pixel is reset to stop emitting light; in the second sub-stage, the reset signal is gradually increased from the preset voltage to the first voltage so that the display pixel continuously does not emit light; wherein the preset voltage is equal to the first voltage.
5. A method of driving a display panel according to claim 3 or 4, wherein the first voltages in each of the display periods are the same or at least partially the same.
6. The display panel is characterized by comprising a plurality of rows of display pixels, wherein each row of display pixels is correspondingly connected with a reset line;
the reset line provides a reset signal for the display pixels of the corresponding row;
The display pixels start one display period display in accordance with each of the active levels in the respective reset signals.
7. The display panel according to claim 6, wherein an active level of the reset signal is a high level, a voltage corresponding to the high level is a first voltage, each row of the display pixels includes a plurality of sub-pixels, the plurality of sub-pixels in the row of the display pixels share one reset line, and each sub-pixel includes:
the light-emitting device is connected in series between the first power line and the second power line;
The driving module is connected with the light-emitting device in series and drives the light-emitting device to light in a light-emitting stage;
the data writing module is connected with the control end of the driving module and is used for writing data signals in a data writing stage;
the reset module is connected with the reset line and the control end of the driving module, resets the control end potential of the driving module according to the first voltage in the reset stage, and controls the light emitting device to stop lighting according to the reset signal after the light emitting device is lighted.
8. The display panel of claim 7, wherein the sub-pixel further comprises a switching module in series with the light emitting device, the switching module being turned off during the reset phase and turned on during the light emitting phase.
9. The display panel according to claim 7, wherein the reset module includes a first switching tube, a second switching tube, and a first capacitor, the data writing module includes a third switching tube, a first end of the first switching tube is connected to a first control line, a second end of the first switching tube is connected to a data line, a third end of the first switching tube is connected to a first end of the second switching tube, one end of the first capacitor is connected to a first end of the second switching tube, the other end of the first capacitor is connected to the reset line, a second end of the second switching tube is connected to a reference line, and a third end of the second switching tube is connected to a control end of the driving module; the first end of the third switching tube is connected with the second control line, the second end of the third switching tube is connected with the data line, and the third end of the third switching tube is connected with the control end of the driving module.
10. The display panel according to claim 8, wherein the switching module includes a fourth switching tube, a first end of the fourth switching tube is connected to a third control line, a second end of the fourth switching tube is connected to the driving module, and a third end of the fourth switching tube is connected to an anode of the light emitting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311810185.8A CN117995083A (en) | 2023-12-26 | 2023-12-26 | Display panel and driving method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311810185.8A CN117995083A (en) | 2023-12-26 | 2023-12-26 | Display panel and driving method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN117995083A true CN117995083A (en) | 2024-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311810185.8A Pending CN117995083A (en) | 2023-12-26 | 2023-12-26 | Display panel and driving method thereof |
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| Country | Link |
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| CN (1) | CN117995083A (en) |
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