CN114420025A - Display panel driving method, driving device and display device - Google Patents
Display panel driving method, driving device and display device Download PDFInfo
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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
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Abstract
The disclosure provides a driving method and a driving device of a display panel and a display device, belongs to the technical field of display, and can solve the problem that when the conventional display device adopts a high refresh rate to display, a pixel unit still faces insufficient charging caused by short charging time. The display panel driving method of the present disclosure includes: receiving a selection signal aiming at a refreshing frequency sent by a user; selecting a corresponding scanning mode to scan the grid lines in the display panel according to the selection signal aiming at the refreshing frequency; wherein the scanning mode includes simultaneously turning on the number of the gate lines.
Description
Technical Field
The disclosure belongs to the technical field of display, and particularly relates to a driving method and a driving device of a display panel and a display device.
Background
With the continuous improvement of the requirements of users on high picture quality and smoothness in use, the mode of improving resolution and increasing refresh rate is mainly adopted at present to achieve better display effect.
Inevitably, however, the charging time of the pixel unit is shortened rapidly due to the simultaneous improvement of the resolution and the refresh rate, although the design material can be changed by adjusting the process of the display panel, and the charging time of the pixel unit is increased by adopting the driving chip with stronger driving capability and other modes, the current display device still faces the problem of insufficient charging caused by shorter charging time when the display device adopts a high refresh rate to display, so that the display is poor and the display effect is affected.
Disclosure of Invention
The present disclosure is directed to at least one of the technical problems in the prior art, and provides a driving method, a driving device and a display device for a display panel.
In a first aspect, an embodiment of the present disclosure provides a method for driving a display panel, including:
receiving a selection signal aiming at a refreshing frequency sent by a user;
selecting a corresponding scanning mode to scan the grid lines in the display panel according to the selection signal aiming at the refreshing frequency; wherein the scanning mode includes simultaneously turning on the number of the gate lines.
Optionally, the selecting a corresponding scanning manner to scan the gate lines in the display panel according to the selection signal for the refresh frequency includes:
when the refreshing frequency is a first refreshing frequency, controlling each grid line to be opened line by line;
when the refreshing frequency is a second refreshing frequency, controlling a plurality of grid lines to be opened simultaneously;
wherein the first refresh frequency is less than the second refresh frequency.
Optionally, the display panel includes: a plurality of gate line groups; each of the gate line groups includes: a plurality of gate lines;
and when the refreshing frequency is a second refreshing frequency, controlling a plurality of grid lines of the same grid line group to be simultaneously opened, and sequentially opening the grid lines of different grid line groups.
Optionally, each of the gate line groups includes: two grid lines; the second refresh frequency is twice the first refresh frequency;
when the refreshing frequency is the first refreshing frequency, controlling the grid lines to be opened line by line;
and when the refresh frequency is the second refresh frequency, controlling two grid lines in the same grid line group to be simultaneously opened, and sequentially opening the grid lines in different grid line groups.
Optionally, when the gate lines in the display panel are switched between different scanning modes, performing power-down restart on the gate lines in the display panel.
In a second aspect, an embodiment of the present disclosure provides a driving apparatus of a display panel, including:
a receiving module configured to receive a selection signal for a refresh frequency sent by a user;
the selection module is configured to select a corresponding scanning mode to scan the grid lines in the display panel according to the selection signal aiming at the refreshing frequency; wherein the scanning mode includes simultaneously turning on the number of the gate lines.
Optionally, the selecting module is specifically configured to control each gate line to be turned on line by line when the refresh frequency is a first refresh frequency;
when the refreshing frequency is a second refreshing frequency, controlling a plurality of grid lines to be opened simultaneously;
wherein the first refresh frequency is less than the second refresh frequency.
Optionally, the display panel includes: a plurality of gate line groups; each of the gate line groups includes: a plurality of gate lines;
the selection module is specifically configured to control a plurality of gate lines of the same gate line group to be simultaneously turned on and the gate lines of different gate line groups to be sequentially turned on when the refresh frequency is the second refresh frequency.
Optionally, each of the gate line groups includes: two grid lines; the second refresh frequency is twice the first refresh rate; (ii) a
The selection module is specifically configured to control each gate line to be opened line by line when the refresh frequency is the first refresh frequency;
and when the refresh frequency is the second refresh frequency, controlling two grid lines in the same grid line group to be simultaneously opened, and sequentially opening the grid lines in different grid line groups.
In a third aspect, an embodiment of the present disclosure provides a display device, including: a display panel; the display device further comprises a driving device of the display panel provided as above;
the driving device of the display panel is connected with the grid lines of the display panel.
Drawings
Fig. 1 is a flowchart illustrating a driving method of a display panel according to an embodiment of the disclosure;
fig. 2 is a schematic structural diagram of a driving apparatus of a display panel according to an embodiment of the disclosure.
Detailed Description
For a better understanding of the technical aspects of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
With the continuous improvement of the requirements of users on high picture quality and smoothness in use, the mode of improving resolution and increasing refresh rate is mainly adopted at present to achieve better display effect. For example, in an Ultra High Definition (UHD) display panel, the pixel cell arrangement is 3840 × 2160, and the refresh frequency can reach 240 hertz (Hz), however, the charging time of a single row of pixels is only 1.89 microseconds (us), which is much shorter than the charging time of the pixels of a currently mainstream Full High Definition (FHD) display panel (the pixel cell arrangement is 1920 × 1080, and the refresh frequency is 144Hz) 6.17 us. If the refresh rate is continuously increased for the UHD display panel, the charging time is further shortened, and the pixels are severely insufficiently charged, resulting in poor display images. In order to solve the above technical problem, embodiments of the present disclosure provide a driving method and a driving apparatus for a display panel, and a display apparatus. The UHD display panel is taken as an example, and the driving method, the driving device and the display device provided by the present disclosure are further described in detail with reference to the drawings and the detailed description.
Example one
Fig. 1 is a schematic flow chart of a driving method of a display panel according to an embodiment of the present disclosure, and as shown in fig. 1, the driving method of the display panel includes the following steps:
step S101, receiving a selection signal aiming at the refresh frequency sent by a user.
It should be noted that, in the embodiment of the present disclosure, a user may select a refresh frequency of a display screen in a display panel according to an actual requirement, for example, when the user is in an office or watching a video, there is no special requirement for the refresh frequency, and in order to make a display screen have stronger sense of delicacy and clearer details, the display panel may display with a lower refresh frequency and a higher resolution; when a user plays a game such as shooting, in order to prevent a display screen from being torn when the display screen is switched quickly, the display panel needs to be displayed at a high refresh rate, and some resolution can be appropriately sacrificed. It will be appreciated that the high and low refresh rates referred to herein are relative, for example the high refresh rate may be 480Hz and the low refresh rate may be 240 Hz. In practical application, a user can send a selection signal aiming at the refresh frequency to the display panel through a switching button in a system menu according to requirements so as to select to display with a high refresh frequency or select to display with a low refresh frequency, and realize the switching between the high refresh frequency display and the low refresh frequency display. Compared with the driving method of the display panel in the related art, the driving method of the display panel in the embodiment of the disclosure is different in that the display panel has a receiving function and can receive a selection signal aiming at a refresh frequency sent by a user.
S102, selecting a corresponding scanning mode to scan the grid lines in the display panel according to a selection signal aiming at the refreshing frequency; the scanning mode comprises the step of simultaneously opening the number of the grid lines.
It should be noted that, a plurality of timing signals for controlling the scanning modes corresponding to different refresh frequencies may be stored in advance, and after receiving a selection signal for a display frequency sent by a user, the scanning mode corresponding to the selection signal may be selected from the stored correspondence relationship to scan the gate lines in the display panel according to whether the selection signal is a high refresh frequency selection signal or a low refresh frequency selection signal. Specifically, the scanning mode may include simultaneously turning on the number of gate lines, and taking the UHD display panel as an example, when performing high refresh frequency display, the scanning mode may be used to simultaneously turn on a larger number of gate lines, and when performing low refresh frequency display, the scanning mode may be used to simultaneously turn on a smaller number of gate lines, thereby implementing high refresh frequency display and low refresh frequency display, and switching between high refresh frequency display and low refresh frequency display.
In the driving method of the display panel provided by the embodiment of the disclosure, the display panel can receive a selection signal aiming at the refresh frequency sent by a user, and display with different refresh frequencies and switching between displays with different refresh frequencies are realized by controlling the number of simultaneously opened grid lines in the display panel according to the selection signal. When the high refresh frequency is selected for displaying, a large number of grid lines can be simultaneously started, the starting time of each grid line is unchanged, the charging time of the pixel unit connected with each grid line is guaranteed to be unchanged, the display time of a frame of picture can be reduced, and the refresh frequency of the display picture can be improved under the condition that the charging time of the pixel unit is not reduced. Under the condition of no particularly high requirement on the refresh rate, the display picture can still take the actual refresh rate and resolution of the display panel as the main, and a small number of grid lines can be simultaneously opened, so that the picture sensing quality is better. It can be seen that, by using the driving method of the display panel provided by the embodiment of the present disclosure, not only high refresh frequency display but also low refresh frequency display can be achieved, and switching between high refresh frequency display and low refresh frequency display can be achieved, so that the display panel has a wide application range, and meets the requirement of a user on diversified display.
In some embodiments, the step S102, selecting a corresponding scanning mode to scan the gate lines in the display panel according to the selection signal for the refresh frequency may specifically include: when the refreshing frequency is a first refreshing frequency, controlling each grid line to be opened line by line; when the refreshing frequency is the second refreshing frequency, controlling a plurality of grid lines to be opened simultaneously; wherein the first refresh frequency is less than the second refresh frequency.
It should be noted that, in a specific example, a first refresh frequency and a second refresh frequency may be preset, and the first refresh frequency is smaller than the second refresh frequency, that is, the first refresh frequency is a low refresh frequency, and the second refresh frequency is a high refresh frequency. When a user selects to display by adopting a low refreshing frequency, the grid lines in the display panel can be controlled to be opened line by line according to a traditional mode, so that the display picture has higher resolution, the fineness of the display picture is stronger, and the detail expression is clearer. When a user selects to display by adopting a high refresh frequency, a plurality of grid lines in the display panel can be controlled to be simultaneously opened, so that a plurality of rows of pixel units are simultaneously charged, the opening time of each grid line is unchanged, the charging time of the pixel unit connected with each grid line is unchanged, the display time of a frame of picture can be reduced, the refresh frequency of the displayed picture can be improved under the condition that the charging time of the pixel units is not reduced, and the requirement of the user on high refresh rate display is met.
In some embodiments, a display panel includes: a plurality of gate line groups; each gate line group includes: a plurality of gate lines; and when the refreshing frequency is the second refreshing frequency, controlling a plurality of grid lines of the same grid line group to be simultaneously opened, and sequentially opening the grid lines of different grid line groups.
It should be noted that the gate lines in the display panel may be divided into a plurality of gate line groups, each gate line group includes a plurality of gate lines, where the plurality of gate lines may be adjacently disposed or may be disposed at intervals, for convenience of description, in this embodiment of the disclosure, each gate line group includes a plurality of gate lines adjacently disposed, and the number of the gate lines may be set according to actual needs, for example, 2 or 3. It can be understood that, while the refresh frequency is increased, the number of gate lines in each gate line group is not too large to ensure the resolution of the display. When a user selects to display by adopting a high refresh frequency, a plurality of grid lines of the same grid line group in the display panel can be controlled to be simultaneously opened, so that a plurality of rows of pixel units are simultaneously charged, the opening time of each grid line is unchanged, the charging time of the pixel units connected with each grid line is ensured to be unchanged, and the grid lines of different grid line groups are not simultaneously opened, so that high refresh rate display is realized, the display time of a frame of picture can be reduced, the refresh frequency of a display picture can be improved under the condition of not reducing the charging time of the pixel units, and the requirement of the user on high refresh rate display is met.
In some embodiments, each gate line group comprises: two grid lines; the second refresh frequency is twice the first refresh frequency; when the refreshing frequency is a first refreshing frequency, controlling each grid line to be opened line by line; and when the refreshing frequency is the second refreshing frequency, controlling two grid lines in the same grid line group to be simultaneously opened, and sequentially opening the grid lines in different grid line groups.
Specifically, taking a UHD display panel as an example, the UHD display panel has a fixed refresh frequency of 240Hz, the pixel arrangement is 3840 × 2160, each row of pixel units in the display panel is connected to one gate line, that is, there are 2160 gate lines in the display panel, all the gate lines can be divided into a plurality of gate line groups, and each gate line group includes two gate lines disposed adjacently. When all the grid lines are opened line by line, the refreshing frequency of the display panel is 240Hz, the resolution is 3840 × 2160, and the display panel displays at a lower refreshing rate and a higher resolution, so that the picture is more greasy, the detail expression is clearer, and the requirement of a user on high-resolution display is met. When two grid lines in the same grid line group are simultaneously opened and the grid lines in different grid line groups are sequentially opened, at the moment, the refresh rate of the display panel can reach 480Hz, and the resolution is 3840X 1080. Because two rows of grid lines are opened simultaneously, in order to ensure the integrity of the picture, the resolution of the picture is correspondingly reduced from 3840 × 2160 to 3840 × 1080, but the 3840 × 1080 resolution still has more pixels, the picture sensing performance is still stronger, and the requirement of a user on the picture resolution can be completely met.
In some embodiments, when the gate lines in the display panel are switched between different scanning modes, the power-down restart is performed on the gate lines in the display panel.
It should be noted that when the gate lines in the display panel are switched between different scanning modes, that is, when the display frames with different refresh rates are switched, because the timing signals corresponding to different refresh rates are different, the gate driving signals transmitted to each gate line are different from those before the switching, the gate lines in the display panel are restarted in a power-down manner, and the gate driving signals in each gate line can be initialized during the switching, so as to prevent interference on the subsequently input gate driving signals, thereby avoiding the mischarging of data signals and causing poor display.
Example two
Fig. 2 is a schematic structural diagram of a driving apparatus of a display panel according to an embodiment of the disclosure, and as shown in fig. 2, the driving apparatus of the display panel includes: a receiving module 201 and a selecting module 202. The receiving module 201 is configured to receive a selection signal for a refresh frequency sent by a user. The selecting module 202 is configured to select a corresponding scanning mode to scan the gate lines in the display panel according to a selection signal for the refresh frequency; the scanning mode comprises the step of simultaneously opening the number of the grid lines.
In the driving apparatus of the display panel provided by the embodiment of the present disclosure, the receiving module 201 may receive a selection signal for the refresh frequency sent by a user, and the selecting module 202 may control the number of gate lines simultaneously opened in the display panel according to the selection signal to realize the display with different refresh frequencies and the switching between the displays with different refresh frequencies. When the high refresh frequency is selected for displaying, a large number of grid lines can be simultaneously started, the starting time of each grid line is unchanged, the charging time of the pixel unit connected with each grid line is guaranteed to be unchanged, the display time of a frame of picture can be reduced, and the refresh frequency of the display picture can be improved under the condition that the charging time of the pixel unit is not reduced. Under the condition of no particularly high requirement on the refresh rate, the display picture can still take the actual refresh rate and resolution of the display panel as the main, and a small number of grid lines can be simultaneously opened, so that the picture sensing quality is better. It can be seen that, by using the driving device of the display panel provided by the embodiment of the disclosure, not only high refresh frequency display but also low refresh frequency display can be realized, and switching between high refresh frequency display and low refresh frequency display can be realized, so that the application range of the display panel is wider, and the requirements of users on diversified display products are met.
It can be understood that, in order to satisfy the requirement that the display panel has the above functions, circuit structures such as gate lines, data lines, and pixel driving circuits in the display panel need to be changed correspondingly, so as to satisfy that the gate lines in the display panel can be scanned in a plurality of different scanning modes, so as to improve the refresh frequency of the display panel and switch between different refresh frequencies, and a specific structure thereof can be specifically set according to actual applications, and is not described herein again. The cascade relationship of the gate driving circuit in the display panel also needs to be changed correspondingly to connect with the gate lines, so as to provide the gate driving signals corresponding to the refresh frequency for each gate line, and the specific structure of the gate driving circuit can be set according to the specific structures of the gate lines, the data lines and the pixel circuits, which is not described herein again. Meanwhile, the time sequence controller in the display panel needs to pre-store time sequence signals corresponding to different scanning modes one to one so as to provide the time sequence signals for the gate driving circuit, and then grid lines in the display panel can be scanned in different scanning modes.
In some embodiments, the selecting module 202 is specifically configured to control each gate line to be turned on line by line when the refresh frequency is the first refresh frequency; when the refreshing frequency is the second refreshing frequency, controlling a plurality of grid lines to be opened simultaneously; wherein the first refresh frequency is less than the second refresh frequency.
In some embodiments, a display panel includes: a plurality of gate line groups; each gate line group includes: a plurality of gate lines; the selecting module 202 is specifically configured to control the gate lines of the same gate line group to be simultaneously turned on and the gate lines of different gate line groups to be sequentially turned on when the refresh frequency is the second refresh frequency.
In some embodiments, each gate line group comprises: two grid lines; the second refresh frequency is twice the first refresh frequency; the selecting module 202 is specifically configured to control each gate line to be turned on line by line when the refresh frequency is the first refresh frequency; and when the refreshing frequency is the second refreshing frequency, controlling two grid lines in the same grid line group to be simultaneously opened, and sequentially opening the grid lines in different grid line groups.
It should be noted that, the receiving module 201 and the selecting module 202 in the driving apparatus for a display panel provided in the embodiment of the present disclosure may respectively implement step S101 and step S102 in the driving method for a display panel provided in the above embodiment, and the implementation manner of the receiving module and the step S102 is the same as that of the driving method for a display panel provided in the above embodiment, and therefore, no further description is given here.
EXAMPLE III
An embodiment of the present disclosure provides a display device, including: the display device further comprises a driving device of the display panel provided in any of the above embodiments, wherein the driving device of the display panel is connected to the gate lines in the display panel.
In the display device provided by the embodiment of the present disclosure, the receiving module in the driving device of the display panel may receive a selection signal for the refresh frequency sent by a user, and the selecting module may control the number of the gate lines simultaneously opened in the display panel according to the selection signal to realize the display with different refresh frequencies and the switching between the displays with different refresh frequencies. When the high refresh frequency is selected for displaying, a large number of grid lines can be simultaneously started, the starting time of each grid line is unchanged, the charging time of the pixel unit connected with each grid line is guaranteed to be unchanged, the display time of a frame of picture can be reduced, and the refresh frequency of the display picture can be improved under the condition that the charging time of the pixel unit is not reduced. Under the condition of no particularly high requirement on the refresh rate, the display picture can still take the actual refresh rate and resolution of the display panel as the main, and a small number of grid lines can be simultaneously opened, so that the picture sensing quality is better. It can be seen that the display device provided by the embodiment of the disclosure can not only realize high refresh frequency display, but also realize low refresh frequency display, and can also realize switching between high refresh frequency display and low refresh frequency display, so that the display panel has a wide application range, and meets the requirement of a user on diversified display.
It is to be understood that the above embodiments are merely exemplary embodiments that are employed to illustrate the principles of the present disclosure, and that the present disclosure is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the disclosure, and these are to be considered as the scope of the disclosure.
Claims (10)
1. A method of driving a display panel, comprising:
receiving a selection signal aiming at a refreshing frequency sent by a user;
selecting a corresponding scanning mode to scan the grid lines in the display panel according to the selection signal aiming at the refreshing frequency; wherein the scanning mode includes simultaneously turning on the number of the gate lines.
2. The method according to claim 1, wherein selecting a corresponding scanning mode to scan the gate lines in the display panel according to the selection signal for the refresh frequency comprises:
when the refreshing frequency is a first refreshing frequency, controlling each grid line to be opened line by line;
when the refreshing frequency is a second refreshing frequency, controlling a plurality of grid lines to be opened simultaneously;
wherein the first refresh frequency is less than the second refresh frequency.
3. The method for driving a display panel according to claim 2, wherein the display panel comprises: a plurality of gate line groups; each of the gate line groups includes: a plurality of gate lines;
and when the refreshing frequency is a second refreshing frequency, controlling a plurality of grid lines of the same grid line group to be simultaneously opened, and sequentially opening the grid lines of different grid line groups.
4. The method for driving a display panel according to claim 3, wherein each of the gate line groups comprises: two grid lines; the second refresh frequency is twice the first refresh rate;
when the refresh frequency is the first refresh rate, controlling each grid line to be opened line by line;
and when the refresh frequency is the second refresh rate, controlling two gate lines in the same gate line group to be simultaneously opened, and sequentially opening the gate lines in different gate line groups.
5. The method according to claim 1, wherein when the gate lines in the display panel are switched between the different scanning modes, the gate lines in the display panel are restarted with power down.
6. A driving apparatus of a display panel, comprising:
a receiving module configured to receive a selection signal for a refresh frequency sent by a user;
the selection module is configured to select a corresponding scanning mode to scan the grid lines in the display panel according to the selection signal aiming at the refreshing frequency; wherein the scanning mode includes simultaneously turning on the number of the gate lines.
7. The apparatus according to claim 6, wherein the selection module is specifically configured to control the gate lines to be turned on line by line when the refresh rate is a first refresh rate;
when the refreshing frequency is a second refreshing frequency, controlling a plurality of grid lines to be opened simultaneously;
wherein the first refresh frequency is less than the second refresh frequency.
8. The device according to claim 7, wherein the display panel comprises: a plurality of gate line groups; each of the gate line groups includes: a plurality of gate lines;
the selection module is specifically configured to control a plurality of gate lines of the same gate line group to be simultaneously turned on and the gate lines of different gate line groups to be sequentially turned on when the refresh frequency is the second refresh frequency.
9. The display panel according to claim 8, wherein each of the gate line groups comprises: two grid lines; the second refresh frequency is twice the first refresh frequency;
the selection module is specifically configured to control each gate line to be opened line by line when the refresh frequency is the first refresh frequency;
and when the refresh frequency is the second refresh rate frequency, controlling two gate lines in the same gate line group to be simultaneously opened, and sequentially opening the gate lines in different gate line groups.
10. A display device, comprising: a display panel; characterized in that the display device further comprises driving means of the display panel according to any one of claims 6 to 9;
the driving device of the display panel is connected with the grid lines of the display panel.
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| CN116798375A (en) * | 2023-06-30 | 2023-09-22 | 长沙惠科光电有限公司 | Scan driving circuit and display panel |
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