CN113077743A - Driving method and driver for improving refresh rate of display panel and display device - Google Patents
Driving method and driver for improving refresh rate of display panel and display device Download PDFInfo
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Abstract
The application provides a driving method, a driver and a display device for improving the refresh rate of a display panel, wherein when the display panel receives an original image signal with the resolution not larger than the resolution of the display panel, the driving method reduces the resolution of the original image signal and then expands the original image signal to the resolution of the display panel, so that the original image signal is normally displayed in the display panel after the refresh rate of the original image signal is improved. The method includes the steps that original image signals with reduced resolution are expanded to the resolution of a display panel, and the original image signals with reduced resolution are input into each group or each column of data lines respectively after charge sharing circuits of drivers (source drivers and/or gate drivers) divide data lines and/or scanning lines of the display panel into multiple groups and connect all data lines in each group of data lines together and/or all scanning lines in each group of scanning lines together.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a driving method, a driver and a display device for improving a refresh rate of a display panel.
Background
Fig. 1 is a schematic diagram of a driving structure of a display device in the prior art, and as shown in fig. 1, the driving structure of the display device is: a System-on-a-Chip (SoC), a timing controller TCON, drivers (a Gate driver Gate IC and a Source driver Source IC), and a display panel (each small box therein represents a pixel unit) are connected in sequence.
At present, with the size of the display panel gradually increasing, the resolution of the display panel is also increasing, and since the high resolution display panel can support higher resolution, the high resolution display panel has been widely used, but due to the limitation of the interface and bandwidth between each chip or device between the SOC chip and the display panel, and the limitation of the manufacturing process of each chip and device, most of the high resolution display panels need a larger data transmission amount due to the higher resolution, so that the supported refresh rate is limited, which affects the improvement of the high resolution display panel on the refresh rate. For example, a display panel with a resolution of 4K × 2K can support a refresh rate of typically up to 161Hz, and sometimes even only 144 Hz.
Therefore, it is necessary to provide a driving method capable of increasing the refresh rate of the high-resolution display panel so that the high-resolution display panel can support a higher refresh rate.
Disclosure of Invention
In order to further improve the refresh rate of the display panel, the embodiment of the application provides a driving method, a driver and a display device for improving the refresh rate of the display panel.
In a first aspect, an embodiment of the present application provides a driving method for increasing a refresh rate of a display panel, including:
the display panel receives an original image signal with a first resolution and a first refresh rate, wherein the original image signal is sent by a front-end device, and the first resolution is not greater than the resolution of the display panel.
Reducing the resolution of the original image signal from the first resolution to a second resolution, and increasing the refresh rate of the original image signal from the first refresh rate to a second refresh rate to obtain a display image signal of the second resolution and the second refresh rate, wherein the number of pixels in each row in the first refresh rate is V times the number of pixels in each row in the second resolution, and/or the number of pixels in each column in the first resolution is G times the number of pixels in each column in the second resolution, and V and G are positive integers greater than 1.
Dividing each V column of data lines of the display panel from the 1 st column of data lines into one group and connecting each group of V column of data lines together, and/or dividing each G row of scanning lines of the display panel from the 1 st row of scanning lines into one group and connecting each group of G rows of scanning lines together.
Correspondingly inputting each line of data signals of the image display signals to each group of data lines of the display panel, so that the original image signals are displayed in the display panel at the first resolution and the second refresh rate according to the display image signals.
In some embodiments, the resolution of the display panel is m × n, where m and n are positive integers, and the driving method includes:
and the display panel receives an original image signal which is sent by the front-end device and has the first resolution m × n and the first refresh rate.
Reducing the first resolution of the original image signal from m x n to k x n to obtain a second resolution k x n, the second refresh rate being m/k times the first refresh rate, wherein k is a positive integer and m/k is G, and the second refresh rate is a second refresh rate.
Dividing each G columns of data lines of the display panel from the 1 st column of data lines into one group and connecting each group of G columns of data lines together.
And sequentially inputting the 1 st row data signal to the kth row data signal of the display image signal to the 1 st row data line to the kth row data line of the display panel respectively, so that the pixels driven by each group of data lines display the same data, and the original image signal is displayed in the display panel at the first resolution and the second refresh rate.
In some embodiments, the resolution of the display panel is m × n, where m and n are positive integers, and the driving method includes:
and the display panel receives an original image signal with a first resolution m × n and a first refresh rate, which is sent by the front-end device.
Reducing the first resolution of the original image signal from m × n to m × j to obtain a second resolution m × j, the second refresh rate being n/j times the first refresh rate, wherein j is a positive integer and n/j is V, and the second refresh rate is a display image signal of the second refresh rate.
Dividing each V-row scanning line of the display panel from the 1 st row scanning line into one group and connecting each group of V-row scanning lines together.
And sequentially inputting the 1 st column data signal to the m th column data signal of the display image signal to the 1 st column data line to the m th column data line of the display panel respectively, so that the pixels driven by each row of the scanning lines display the same data, and the original image signal is displayed in the display panel at the first resolution and the second refresh rate.
In some embodiments, the resolution of the display panel is m × n, where m and n are positive integers, and the driving method includes:
and the display panel receives an original image signal with a first resolution m × n and a first refresh rate, which is sent by the front-end device.
Reducing the first resolution of the original image signal from m × n to k × j to obtain a second resolution k × j, the second refresh rate being (m/k) × (n/j) times the first refresh rate, wherein k, j is a positive integer, and m/k is G, and n/j is V.
The display panel is divided into a group from a 1 st column data line, each G column data line is connected together, the display panel is divided into a group from a 1 st row scanning line, each V row scanning line is divided into a group, and each group of V row scanning lines are connected together.
And sequentially inputting the 1 st row data signal to the kth row data signal of the display image signal to the 1 st row data line to the kth row data line of the display panel respectively, so that the pixels driven by each group of the data lines display the same data, and the pixels driven by each group of the scanning lines display the same data, so that the original image signal is displayed in the display panel at the first resolution and the second refresh rate.
In a second aspect, an embodiment of the present application further provides a driver for applying the driving method for increasing the refresh rate of a display panel to the display panel, where the driver includes:
the receiving module is used for receiving an original image signal of a first resolution and a first refresh rate sent by a front-end device, wherein the first resolution is not greater than the resolution of the display panel.
The conversion module is configured to reduce the resolution of the original image signal from the first resolution to a second resolution, and increase the refresh rate of the original image signal from the first refresh rate to a second refresh rate, so as to obtain the display image signal of the second resolution and the second refresh rate, where the number of pixels in each row in the first refresh rate is V times the number of pixels in each row in the second resolution, and/or the number of pixels in each column in the first resolution is G times the number of pixels in each column in the second resolution, and V and G are positive integers greater than 1.
The connecting module is used for dividing each V column of data lines of the display panel from the 1 st column of data lines into one group and connecting each group of V column of data lines together, and/or dividing each G row of scanning lines of the display panel from the 1 st row of scanning lines into one group and connecting each group of G rows of scanning lines together.
And the display module is used for correspondingly inputting each line of data signals of the image display signals to each group of data lines of the display panel, so that the original image signals are displayed in the display panel at the first resolution and the second refresh rate according to the display image signals.
In some embodiments, the resolution of the display panel is m × n, wherein m and n are positive integers; the driver is a source driver, the source driver including:
the receiving module is specifically configured to receive an original image signal, which is sent by the front-end device and has the first resolution m × n and the first refresh rate.
The conversion module is specifically configured to reduce the first resolution of the original image signal from m × n to k × n to obtain a display image signal with a second resolution k × n and a second refresh rate, where the second refresh rate is m/k times of the first refresh rate, k is a positive integer, and m/k is G.
The connecting module is specifically configured to divide each G column of data lines of the display panel from the 1 st column of data lines into one group and connect each group of G column of data lines together.
The display module is specifically configured to sequentially input a 1 st column data signal to a kth column data signal of the display image signal to a 1 st group of data lines to a kth group of data lines of the display panel, so that pixels driven by each group of data lines display the same data, and the original image signal is displayed on the display panel at the first resolution and the second refresh rate.
In some embodiments, the resolution of the display panel is m × n, wherein m and n are positive integers; the driver is a gate driver, the gate driver including:
the receiving module is specifically configured to receive an original image signal, which is sent by the front-end device and has the first resolution m × n and the first refresh rate.
The conversion module is specifically configured to reduce the first resolution of the original image signal from m × n to m × j to obtain a display image signal with a second resolution m × j and a second refresh rate, where the second refresh rate is n/j times the first refresh rate, j is a positive integer, and n/j is V.
The conversion module is specifically configured to divide each V rows of scan lines of the display panel from the 1 st row of scan lines into one group and connect each group of V rows of scan lines together.
The display module is specifically configured to sequentially input a 1 st column data signal to an m th column data signal of the display image signal to a 1 st column data line to an m th column data line of the display panel, so that pixels driven by the scan lines in each row display the same data, and the original image signal is displayed on the display panel at the first resolution and the second refresh rate.
In some embodiments, the resolution of the display panel is m × n, where m and n are positive integers, and the driving method includes:
the receiving module is specifically configured to receive an original image signal, which is sent by a front-end device and has a first resolution m × n and a first refresh rate.
The conversion module is specifically configured to reduce the first resolution of the original image signal from m × n to k × j to obtain a second resolution k × j, and the second refresh rate is a display image signal at a second refresh rate (m/k) × (n/j) times the first refresh rate, where k and j are positive integers, and m/k is G, and n/j is V.
The connection module is specifically configured to divide the display panel into one group from a 1 st column of data lines, connect the G columns of data lines in each group, and divide the display panel into one group from a 1 st row of scan lines and connect the V rows of scan lines in each group.
The display module is specifically configured to sequentially input a 1 st column data signal to a kth column data signal of the display image signal to a 1 st group of data lines to a kth group of data lines of the display panel, so that pixels driven by each group of data lines display the same data, and pixels driven by each group of scan lines display the same data, so that the original image signal is displayed in the display panel at the first resolution and the second refresh rate.
In a third aspect, an embodiment of the present application further provides a display device, which includes a display panel, and the driver as described above, and is configured to input a data signal and a scan signal to the display panel.
In some embodiments, the driver is specifically configured to:
receiving an original image signal of a first resolution and a first refresh rate sent by a front-end device, wherein the first resolution is not greater than the resolution of the display panel.
Reducing the resolution of the original image signal from the first resolution to a second resolution, and increasing the refresh rate of the original image signal from the first refresh rate to a second refresh rate to obtain a display image signal of the second resolution and the second refresh rate, wherein the number of pixels in each row in the first refresh rate is V times the number of pixels in each row in the second resolution, and/or the number of pixels in each column in the first resolution is G times the number of pixels in each column in the second resolution, and V and G are positive integers greater than 1.
Dividing each V column of data lines of the display panel from the 1 st column of data lines into one group and connecting each group of V column of data lines together, and/or dividing each G row of scanning lines of the display panel from the 1 st row of scanning lines into one group and connecting each group of G rows of scanning lines together.
Correspondingly inputting each line of data signals of the image display signals to each group of data lines of the display panel, so that the original image signals are displayed in the display panel at the first resolution and the second refresh rate according to the display image signals.
According to the driving method, the driver and the display device for improving the refresh rate of the display panel, provided by the embodiment of the application, on the premise that the data transmission quantity is not improved, when an original image signal with the resolution not larger than that of the display panel is received, the resolution of the original image signal is reduced and then the original image signal is expanded to the display image with the resolution of the display panel, so that the original image signal is normally displayed in the display panel after the refresh rate of the original image signal is improved. The expanding of the original image signals with reduced resolution to the resolution of the display panel is accomplished by a charge sharing circuit of a driver (a source driver and/or a gate driver), the charge sharing circuit divides data lines and/or scanning lines of the display panel into a plurality of groups, and after each group of data lines and/or each group of scanning lines are connected, the same column of data signals corresponding to each group of data lines in the original image signals with reduced resolution are respectively input to each group of data lines.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a driving architecture of a display device in the prior art.
Fig. 2 is a schematic structural diagram of a charge sharing circuit according to an embodiment of the present disclosure.
Fig. 3 is a schematic flowchart of a driving method for increasing a refresh rate of a display panel according to an embodiment of the present disclosure.
Fig. 4 is a schematic structural diagram of a driver 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 is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that, the image signal different from the resolution of the display panel is scaled to adapt to the resolution of the display panel, so that the image signal is displayed in the display panel, which can be realized by an interpolation algorithm, the interpolation algorithm has high accuracy and wide application range, and is particularly applied to a scaling process in which an image is not in an integer proportion, but the interpolation algorithm has a complex calculation process and a long time delay, and for the scaling process in which the image signal is in the integer proportion, such as the scaling process in which the image signal is in the integer proportion between rows and the scaling process in which the image signal is in the integer proportion between columns, a charge sharing circuit of a driver (a gate driver or a source driver) can be used to simplify the scaling process.
Fig. 2 is a schematic structural diagram of a charge sharing circuit according to an embodiment of the present disclosure, as shown in fig. 2, where a horizontal direction is a scan line, and a vertical direction is a data line, a charge sharing circuit of a driver (Source driver Source IC or Gate driver Gate IC) in the embodiment of the present disclosure refers to connecting a plurality of data lines or a plurality of scan lines (in fig. 4, each 2 data lines or each 2 scan lines are connected as an example, a curve between each 2 data lines or each 2 scan lines represents a connection line between each group of 2 data lines or each group of 2 scan lines), when a plurality of data lines are connected, two columns of pixels can share a data signal provided by the same data line, so that two columns of pixels display the same data; when a plurality of scanning lines are connected, the two rows of pixels can share the data signals provided by the same data line after being simultaneously opened, so that the two rows of pixels can display the same data. It is understood that the integer-scale scaling process means that the scale before and after scaling is an integer.
Fig. 3 is a schematic flow chart of a driving method for increasing a refresh rate of a display panel according to an embodiment of the present disclosure, and as shown in fig. 3, the driving method for increasing the refresh rate of the display panel according to the embodiment of the present disclosure includes:
s1, the display panel receives the original image signal of the first resolution and the first refresh rate sent by the front-end device, wherein the first resolution is not greater than the resolution of the display panel.
The front-end device is a system-on-chip SOC and a timing control chip TCON which transmit image data to the display panel.
It should be noted that, since the physical resolution of the display panel determines the maximum resolution that can support the display, the embodiment of the present application is directed to increasing the refresh rate of the original image signal with a resolution no greater than the resolution of the display panel. The physical resolution of the display panel refers to the number of pixels in each row and the number of pixels in each column of the display panel.
S2, reducing the resolution of the original image signal from the first resolution to the second resolution, and increasing the refresh rate of the original image signal from the first refresh rate to the second refresh rate to obtain a display image signal of the second resolution and the second refresh rate, wherein the number of pixels in each row in the first refresh rate is V times the number of pixels in each row in the second resolution, and/or the number of pixels in each column in the first resolution is G times the number of pixels in each column in the second resolution, and both V and G are positive integers greater than 1.
It should be noted that, on the premise of not increasing the data transmission amount, the resolution of the original image signal and the refresh rate are in an inverse relationship, that is, the lower the resolution, the higher the refresh rate; since the higher the resolution is, the lower the refresh rate is, the higher the refresh rate of the original image signal is, the lower the resolution of the original image signal can be.
Specifically, the first resolution of the original signal image is reduced to the second resolution to increase the first refresh rate of the original signal image to the second refresh rate, thereby obtaining the display image signal of the second resolution and the second refresh rate actually provided to the display panel.
In addition, the original image signal is scaled by an integer ratio, that is, the number of pixels in each row in the first refresh rate is limited to be V times the number of pixels in each row in the second resolution, and/or the number of pixels in each column in the first resolution is G times the number of pixels in each column in the second resolution, and V and G are positive integers greater than 1.
And S3, dividing each V column data line of the display panel from the 1 st column data line into one group and connecting each group of V column data lines together, and/or dividing each G row scanning line of the display panel from the 1 st row scanning line into one group and connecting each group of G rows scanning lines together.
Specifically, since the resolution is reduced when the refresh rate is increased so as not to increase the data transmission amount, the resolution (second resolution) of the display image signal is smaller than the resolution of the display panel, and thus the display image signal cannot be directly displayed in the display panel, in the embodiment of the present application, each V column data line of the display panel from the 1 st column data line is divided into one group by the charge sharing circuit of the source driver, and each V column data line group is connected together, and/or each G row scanning line of the display panel from the 1 st row scanning line is divided into one group by the charge sharing circuit of the gate driver, and each G row scanning line group is connected together.
And S4, correspondingly inputting each column of data signals of the image display signals to each group or each data line of the display panel, so that the original image signals are displayed in the display panel at the first resolution and the second refresh rate according to the display image signals.
Specifically, when the number of pixels in each row in the first refresh rate is V times of the number of pixels in each row in the second resolution, dividing each V-column data line of the display panel starting from the 1 st column data line into one group and connecting each group of V-column data lines together, and at this time, correspondingly inputting each column of data signals of image display signals to each group of data lines of the display panel, so that the pixels driven by each group of data lines display the same data; and when the number of the pixel points of each row in the first resolution is G times of the number of the pixel points of each row in the second resolution, dividing each G rows of scanning lines of the display panel starting from the 1 st row of scanning lines into a group and connecting each group of G rows of scanning lines together, and correspondingly inputting each row of data signals of image display signals into each data line of the display panel at the moment to enable the pixels driven by each group of scanning lines to display the same data, so that the original image signals are displayed in the display panel at the first resolution and the second refresh rate according to the display image signals, namely, the original image signals are displayed in the display panel from the first refresh rate to the second refresh rate.
According to the driving method, the driver and the display device for improving the refresh rate of the display panel, provided by the embodiment of the application, on the premise that the data transmission quantity is not improved, when a signal image with the resolution not larger than that of the display panel is received, the resolution of the signal image is reduced and then the signal image is expanded to the display image with the resolution of the display panel, so that the refresh rate of an original image signal is improved and then the signal image is normally displayed in the display panel. The expanding of the original image signals with reduced resolution to the resolution of the display panel is accomplished by a charge sharing circuit of a driver (a source driver and/or a gate driver), the charge sharing circuit divides data lines and/or scanning lines of the display panel into a plurality of groups, and after each group of data lines and/or each group of scanning lines are connected, the same column of data signals corresponding to each group of data lines in the original image signals with reduced resolution are respectively input to each group of data lines.
Based on the above embodiment, if the resolution of the display panel is m × n, where m and n are positive integers, the driving method for increasing the refresh rate of the display panel may include:
the display panel receives an original image signal which is sent by a front-end device and has a first resolution of m × n and a first refresh rate;
reducing the first resolution of the original image signal from m × n to k × n to obtain a display image signal with a second resolution k × n and a second refresh rate, wherein the second refresh rate is m/k times the first refresh rate, k is a positive integer, and m/k is G;
dividing each G columns of data lines of the display panel from the 1 st column of data lines into one group and connecting each group of G columns of data lines together;
sequentially inputting a 1 st column data signal to a k th column data signal of a display image signal to the 1 st to k th group data lines of the display panel respectively, so that pixels driven by each group of data lines display the same data, and displaying the original image signal in the display panel at a first resolution and a second refresh rate.
For example, where m is 3840, n is 2160, k is 1920, G is m/k is 2, the first refresh rate is 120Hz, the second refresh rate is 240Hz, that is, the resolution of the display panel is 3840 2160, the display panel receives the original image signal with the resolution of 3840 2160@120Hz, the resolution of the original image signal is reduced from 3840 2160 to 1920 2160, the refresh rate of the original image signal is increased from 120Hz to 240Hz, so as to obtain a display image signal with the resolution of 1920 2160@240Hz, then the display panel is divided into 1920 groups from the 1 st data line, each 2 columns of data lines, so as to divide 3820 data lines of the display panel into 1920 groups, each 2 columns of data lines are connected together by using a charge sharing circuit, then the 1 st group to the 1920 th group of data lines of the display image signal are respectively connected to the 1 st row to the 1920 th row of data lines, so as to make the pixels of the same group display image signal at the same time, finally, the original image signal is displayed in the display panel at 3840 × 2160@240Hz, so that the refresh rate of the display panel is increased from 120Hz to 240 Hz.
Alternatively, based on the above embodiment, if the resolution of the display panel is m × n, where m and n are positive integers, the driving method for increasing the refresh rate of the display panel may include:
the display panel receives an original image signal which is sent by a front-end device, wherein the first resolution is m x n and the first refresh rate is;
reducing the first resolution of the original image signal from m × n to m × j to obtain a display image signal with a second resolution of m × j and a second refresh rate, wherein the second refresh rate is n/j times of the first refresh rate, j is a positive integer, and n/j is V;
dividing each V-row scanning line of the display panel from the 1 st row scanning line into one group and connecting each group of V-row scanning lines together;
the 1 st column data line to the m th column data line of the display panel are respectively and sequentially input with the 1 st column data signal to the m th column data signal of the display image signal, so that the pixels driven by each row of scanning lines display the same data, and the original image signal is displayed in the display panel at a first resolution and a second refresh rate.
For example, m 3840, n 2160, j 1080, V n/j 2, the first refresh rate is 120Hz, the second refresh rate is 240Hz, i.e. the resolution of the display panel is 3840 2160, the display panel receives the original image signal with the resolution of 3840 2160@120Hz, the resolution of the original image signal is reduced from 3840 2160 to 3840 1080, the refresh rate of the original image signal is increased from 120Hz to 240Hz, thereby obtaining a display image signal with the resolution of 3840 1080@240Hz, then the display panel is divided into one group from the 1 st row scanning line, every 2 rows of scanning lines, thereby dividing the 2160 rows of scanning lines of the display panel into 1080 groups, each group of 2 rows of scanning lines are connected together by using the charge sharing circuit, then the 1 st to 3840 th data lines of the display image signal are respectively connected to the 1 st to 3840 th data lines, thereby the same data of each group is displayed at the same time of scanning of the same pixel, the original image signal is displayed in the display panel at 3840 × 2160@240Hz, so that the refresh rate of the display panel is increased from 120Hz to 240 Hz.
Or, based on the foregoing embodiment, if the resolution of the display panel is m × n, where m and n are positive integers, the driving method for increasing the refresh rate of the display panel may include:
the display panel receives an original image signal which is sent by a front-end device, wherein the first resolution is m x n and the first refresh rate is;
reducing the first resolution of the original image signal from m × n to k × j to obtain a display image signal with a second resolution k × j and a second refresh rate which is (m/k) × (n/j) times the first refresh rate, wherein k and j are positive integers, and m/k is G, and n/j is V;
starting from a 1 st column of data lines, dividing each G column of data lines into one group, connecting each group of G column of data lines together, starting from a 1 st row of scanning lines, dividing each V row of scanning lines into one group, and connecting each group of V rows of scanning lines together;
the method comprises the steps that 1 st to k th data lines of a display panel are respectively and sequentially input 1 st to k th data signals of display image signals, so that pixels driven by each group of data lines display the same data, and pixels driven by each group of scanning lines display the same data, and the original image signals are displayed in the display panel at a first resolution and a second refresh rate.
For example, m 3840, n 2160, k 1920, j 1080, G m/k 2, V n/j 2, the first refresh rate is 120Hz, the second refresh rate is 480Hz, that is, the resolution of the display panel is 3840 2160, the display panel receives the original image signal with the resolution of 3840 2160@120Hz, the resolution of the original image signal is reduced from 3840 2160 to 1920 1080, the refresh rate of the original image signal is increased from 120Hz to 480Hz, thereby obtaining a display image signal with 1920 1080@480Hz, then the display panel is divided into one group from the 1 st column data line and 2 nd column data line, thereby dividing 3820 data lines of the display panel into 1920 groups, and simultaneously the display panel is divided into one group from the 1 st row scanning line and 2 nd row scanning line, thereby dividing the row scanning line group of the display panel into 0, and the 1080 group is connected together by the charge sharing circuit, and respectively connecting 2 rows of scanning lines in each group, then respectively leading the data signals from the 1 st group to the 1920 th group of the data lines of the display panel into the data signals from the 1 st column to the 1920 th column of the display image signals, so that the pixels driven by the data lines in each group display the same data at the same time, and the pixels driven by the scanning lines in each group display the same data, and finally displaying the original image signals in the display panel at 3840 × 2160@480Hz, so that the refresh rate of the display panel is increased from 120Hz to 480 Hz.
Fig. 4 is a schematic structural diagram of a driver provided in an embodiment of the present application, and as shown in fig. 4, the embodiment of the present application further provides a driver, where the driver applies the driving method for increasing the refresh rate of the display panel to the display panel, and the driver includes:
a receiving module 401, configured to receive an original image signal with a first resolution and a first refresh rate sent by a front-end device, where the first resolution is not greater than a resolution of a display panel;
a conversion module 402, configured to reduce the resolution of the original image signal from a first resolution to a second resolution, and increase the refresh rate of the original image signal from the first refresh rate to a second refresh rate, so as to obtain a display image signal with the second resolution and the second refresh rate, where the number of pixels in each row in the first refresh rate is V times the number of pixels in each row in the second resolution, and/or the number of pixels in each column in the first resolution is G times the number of pixels in each column in the second resolution, and V and G are positive integers greater than 1;
the connecting module 403 is configured to divide each V columns of data lines of the display panel from the 1 st column of data lines into one group and connect each group of V columns of data lines together, and/or divide each G rows of scan lines of the display panel from the 1 st row of scan lines into one group and connect each group of G rows of scan lines together.
The display module 404 is configured to correspondingly input each column of data signals of the image display signals to each group or each data line of the display panel, so that the original image signals are displayed in the display panel at the first resolution and the second refresh rate according to the display image signals.
The driver provided in the embodiment of the application, the interface and the bandwidth between each chip or device in the driving structure of the display device, and the limitation of the manufacturing process of each chip and device, on the premise of not increasing the data transmission amount, when receiving the original image signal with the resolution not greater than the resolution of the display panel, the resolution of the original image signal is reduced and then expanded to the display image with the resolution of the display panel, so that the display image with the resolution of the display panel is normally displayed in the display panel after the refresh rate of the original image signal is increased.
Based on the above embodiment, the resolution of the display panel is m × n, where m and n are positive integers; the driver is a source driver, the source driver comprising:
a receiving module 401, specifically configured to receive an original image signal with a first resolution m × n and a first refresh rate, which is sent by a front-end device;
a conversion module 402, configured to reduce a first resolution of the original image signal from m × n to k × n to obtain a display image signal with a second resolution k × n and a second refresh rate, where the second refresh rate is m/k times the first refresh rate, k is a positive integer, and m/k is G;
a connecting module 403, configured to divide each G column of data lines of the display panel from the 1 st column of data lines into one group and connect each group of G column of data lines together;
the display module 404 is specifically configured to sequentially input a 1 st column data signal to a kth column data signal of a display image signal to the 1 st to kth group data lines of the display panel, so that pixels driven by each group of data lines display the same data, and the original image signal is displayed on the display panel at a first resolution and a second refresh rate.
Or, based on the above embodiment, the resolution of the display panel is m × n, where m and n are positive integers; the driver is a gate driver, the gate driver comprising:
a receiving module 401, specifically configured to receive an original image signal with a first resolution m × n and a first refresh rate, which is sent by a front-end device;
a conversion module 402, configured to reduce a first resolution of the original image signal from m × n to m × j to obtain a display image signal with a second resolution of m × j and a second refresh rate, where the second refresh rate is n/j times the first refresh rate, j is a positive integer, and n/j is V;
a connecting module 403, configured to divide each V rows of scan lines of the display panel from the 1 st row of scan lines into one group and connect each group of V rows of scan lines together;
the display module 404 is specifically configured to sequentially input a row 1 data signal to a row m data signal of a display image signal to a row 1 data line to a row m data line of the display panel, so that pixels driven by each row of scan lines display the same data, and the original image signal is displayed in the display panel at a first resolution and a second refresh rate.
Still alternatively, based on the above embodiment, the resolution of the display panel is m × n, where m and n are positive integers, the driver includes a source driver and a gate driver, and the driver includes:
a receiving module 401, specifically configured to receive an original image signal with a first resolution m × n and a first refresh rate sent by a front-end device;
a conversion module 402, configured to reduce a first resolution of the original image signal from m × n to k × j to obtain a display image signal with a second resolution k × j and a second refresh rate (m/k) × (n/j) times the first refresh rate, where k and j are positive integers, and m/k is G, and n/j is V;
the connection module 403 is specifically configured to divide the display panel into one group from the 1 st column of data lines, divide each G column of data lines into one group, connect the G columns of data lines together, and divide the display panel into one group from the 1 st row of scan lines, and divide each V rows of scan lines into one group, and connect each V rows of scan lines together;
the display module 404 is specifically configured to sequentially input a 1 st column data signal to a kth column data signal of a display image signal to the 1 st to kth group data lines of the display panel, so that the pixels driven by each group of data lines display the same data, and the pixels driven by each group of scan lines display the same data, so as to display the original image signal in the display panel at the first resolution and the second refresh rate.
Based on the same inventive concept, embodiments of the present application also provide a display device including a display panel, and the driver as described above for inputting a data signal and a scan signal to the display panel.
Based on the above embodiment, the driver is specifically configured to:
the display panel receives an original image signal of a first resolution and a first refresh rate, wherein the original image signal is sent by a front-end device, and the first resolution is not greater than the resolution of the display panel;
reducing the resolution of the original image signal from a first resolution to a second resolution, and increasing the refresh rate of the original image signal from the first refresh rate to a second refresh rate to obtain a display image signal of the second resolution and the second refresh rate, wherein the number of pixels in each row in the first refresh rate is V times the number of pixels in each row in the second resolution, and/or the number of pixels in each column in the first resolution is G times the number of pixels in each column in the second resolution, and both V and G are positive integers greater than 1;
dividing each V column of data lines of the display panel from the 1 st column of data lines into one group and connecting each group of V column of data lines together, and/or dividing each G row of scanning lines of the display panel from the 1 st row of scanning lines into one group and connecting each group of G rows of scanning lines together;
and correspondingly inputting each line of data signals of the image display signals to each group or each data line of the display panel, so that the original image signals are displayed in the display panel at a first resolution and a second refresh rate according to the display image signals.
According to the driving method, the driver and the display device for improving the refresh rate of the display panel provided by the embodiment of the application, the interface and the bandwidth between each chip or device in the driving structure of the display device and the limit of the manufacturing process of each chip and device are arranged, on the premise of not improving the data transmission quantity, when an original image signal with the resolution not greater than the resolution of the display panel is received, the resolution of the original image signal is reduced and then expanded to the resolution of the display panel, and finally the refresh rate of the original image signal is improved and then displayed in the display panel. The expanding of the original image signals with reduced resolution to the resolution of the display panel is accomplished by a charge sharing circuit of a driver (a source driver and/or a gate driver), the charge sharing circuit divides data lines and/or scanning lines of the display panel into a plurality of groups, and after each group of data lines and/or each group of scanning lines are connected, the same column of data signals corresponding to each group of data lines in the original image signals with reduced resolution are respectively input to each group of data lines.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The above description of the embodiments is only for assisting understanding of the technical solutions and the core ideas thereof; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A driving method for increasing a refresh rate of a display panel, comprising:
the display panel receives an original image signal with a first resolution and a first refresh rate, wherein the original image signal is sent by a front-end device, and the first resolution is not greater than the resolution of the display panel;
reducing the resolution of the original image signal from the first resolution to a second resolution, and increasing the refresh rate of the original image signal from the first refresh rate to a second refresh rate to obtain a display image signal of the second resolution and the second refresh rate, wherein the number of pixels in each row in the first refresh rate is V times the number of pixels in each row in the second resolution, and/or the number of pixels in each column in the first resolution is G times the number of pixels in each column in the second resolution, and V and G are positive integers greater than 1;
dividing each V column of data lines of the display panel from a 1 st column of data lines into one group and connecting each group of V column of data lines together, and/or dividing each G row of scanning lines of the display panel from a 1 st row of scanning lines into one group and connecting each group of G rows of scanning lines together;
correspondingly inputting each line of data signals of the image display signals to each group or each data line of the display panel, so that the original image signals are displayed in the display panel at the first resolution and the second refresh rate according to the display image signals.
2. The driving method for increasing the refresh rate of a display panel according to claim 1, wherein the resolution of the display panel is m x n, where m and n are positive integers, the driving method comprising:
the display panel receives an original image signal which is sent by the front-end device and has the first resolution m × n and the first refresh rate;
reducing the first resolution of the original image signal from m x n to k x n to obtain a second resolution k x n, the second refresh rate being m/k times the first refresh rate, wherein k is a positive integer and m/k is G, and the second refresh rate is a second refresh rate;
dividing each G columns of data lines of the display panel from the 1 st column of data lines into one group and connecting each group of G columns of data lines together;
and sequentially inputting the 1 st row data signal to the kth row data signal of the display image signal to the 1 st row data line to the kth row data line of the display panel respectively, so that the pixels driven by each group of data lines display the same data, and the original image signal is displayed in the display panel at the first resolution and the second refresh rate.
3. The driving method for increasing the refresh rate of a display panel according to claim 1, wherein the resolution of the display panel is m x n, where m and n are positive integers, the driving method comprising:
the display panel receives an original image signal with a first resolution m x n and a first refresh rate, which is sent by the front-end device;
reducing the first resolution of the original image signal from m × n to m × j to obtain a second resolution m × j, the second refresh rate being n/j times the first refresh rate, wherein j is a positive integer and n/j is V;
dividing each V-row scanning line of the display panel from the 1 st row scanning line into one group and connecting each group of V-row scanning lines together;
and sequentially inputting the 1 st column data signal to the m th column data signal of the display image signal to the 1 st column data line to the m th column data line of the display panel respectively, so that the pixels driven by each row of the scanning lines display the same data, and the original image signal is displayed in the display panel at the first resolution and the second refresh rate.
4. The driving method for increasing the refresh rate of a display panel according to claim 1, wherein the resolution of the display panel is m x n, where m and n are positive integers, the driving method comprising:
the display panel receives an original image signal with a first resolution m x n and a first refresh rate, which is sent by the front-end device;
reducing the first resolution of the original image signal from m × n to k × j to obtain a second resolution k × j, the second refresh rate being (m/k) × (n/j) times the first refresh rate, wherein k, j is a positive integer, and m/k is G, and n/j is V;
starting from a 1 st column of data lines, dividing each G column of data lines into one group, connecting each group of G column of data lines together, starting from a 1 st row of scanning lines, dividing each V row of scanning lines into one group, and connecting each group of V rows of scanning lines together;
and sequentially inputting the 1 st row data signal to the kth row data signal of the display image signal to the 1 st row data line to the kth row data line of the display panel respectively, so that the pixels driven by each group of the data lines display the same data, and the pixels driven by each group of the scanning lines display the same data, so that the original image signal is displayed in the display panel at the first resolution and the second refresh rate.
5. A driver for applying the driving method for increasing the refresh rate of a display panel according to any one of claims 1 to 4 to a display panel, the driver comprising:
the display device comprises a receiving module, a display module and a control module, wherein the receiving module is used for receiving an original image signal of a first resolution and a first refresh rate, which is sent by a front-end device, and the first resolution is not greater than the resolution of the display panel;
a conversion module, configured to reduce the resolution of the original image signal from the first resolution to a second resolution, and increase the refresh rate of the original image signal from the first refresh rate to a second refresh rate, so as to obtain a display image signal of the second resolution and the second refresh rate, where the number of pixels in each row in the first refresh rate is V times the number of pixels in each row in the second resolution, and/or the number of pixels in each column in the first resolution is G times the number of pixels in each column in the second resolution, and V and G are positive integers greater than 1;
the connecting module is used for dividing each V column of data lines of the display panel from the 1 st column of data lines into one group and connecting each group of V column of data lines together, and/or dividing each G row of scanning lines of the display panel from the 1 st row of scanning lines into one group and connecting each group of G rows of scanning lines together;
and the display module is used for correspondingly inputting each line of data signals of the image display signals to each group or each data line of the display panel, so that the original image signals are displayed in the display panel at the first resolution and the second refresh rate according to the display image signals.
6. The driver of claim 5, wherein the resolution of the display panel is m x n, where m and n are positive integers; the driver is a source driver, the source driver including:
the receiving module is specifically configured to receive an original image signal, which is sent by the front-end device and has the first resolution m × n and the first refresh rate;
the conversion module is specifically configured to reduce the first resolution of the original image signal from m × n to k × n to obtain a display image signal with a second resolution k × n and a second refresh rate, where the second refresh rate is m/k times of the first refresh rate, k is a positive integer, and m/k is G;
the connecting module is specifically used for dividing each G columns of data lines of the display panel from the 1 st column of data lines into one group and connecting each group of G columns of data lines together;
the display module is specifically configured to sequentially input a 1 st column data signal to a kth column data signal of the display image signal to a 1 st group of data lines to a kth group of data lines of the display panel, so that pixels driven by each group of data lines display the same data, and the original image signal is displayed on the display panel at the first resolution and the second refresh rate.
7. The driver of claim 5, wherein the resolution of the display panel is m x n, where m and n are positive integers; the driver is a gate driver, the gate driver including:
the receiving module is specifically configured to receive an original image signal, which is sent by the front-end device and has the first resolution m × n and the first refresh rate;
the conversion module is specifically configured to reduce the first resolution of the original image signal from m × n to m × j to obtain a display image signal with a second resolution m × j and a second refresh rate, where the second refresh rate is n/j times the first refresh rate, j is a positive integer, and n/j is V;
the connecting module is specifically used for dividing each V-row scanning line of the display panel from the 1 st row scanning line into one group and connecting each group of V-row scanning lines together;
the display module is specifically configured to sequentially input a 1 st column data signal to an m th column data signal of the display image signal to a 1 st column data line to an m th column data line of the display panel, so that pixels driven by the scan lines in each row display the same data, and the original image signal is displayed on the display panel at the first resolution and the second refresh rate.
8. The driver of claim 5, wherein the resolution of the display panel is m x n, where m and n are positive integers; the driver includes a source driver and a gate driver, the driver including:
the receiving module is specifically configured to receive an original image signal, which is sent by the front-end device and has a first resolution m × n and a first refresh rate;
the conversion module is specifically configured to reduce the first resolution of the original image signal from m × n to k × j to obtain a second resolution k × j, where k and j are positive integers, and m/k is G, and n/j is V, and the second refresh rate is (m/k) × (n/j) times the first refresh rate;
the connecting module is specifically configured to divide the display panel into one group from a 1 st column of data lines, connect the G columns of data lines in each group, and divide the display panel into one group from a 1 st row of scanning lines and each V row of scanning lines in each group from a V row of scanning lines in each group;
the display module is specifically configured to sequentially input a 1 st column data signal to a kth column data signal of the display image signal to a 1 st group of data lines to a kth group of data lines of the display panel, so that pixels driven by each group of data lines display the same data, and pixels driven by each group of scan lines display the same data, so that the original image signal is displayed in the display panel at the first resolution and the second refresh rate.
9. A display device comprising a display panel, and the driver according to any one of claims 6 to 8, for inputting a data signal and a scan signal to the display panel.
10. The display device of claim 9, wherein the driver is specifically configured to:
receiving an original image signal of a first resolution and a first refresh rate sent by a front-end device, wherein the first resolution is not greater than the resolution of the display panel;
reducing the resolution of the original image signal from the first resolution to a second resolution, and increasing the refresh rate of the original image signal from the first refresh rate to a second refresh rate to obtain a display image signal of the second resolution and the second refresh rate, wherein the number of pixels in each row in the first refresh rate is V times the number of pixels in each row in the second resolution, and/or the number of pixels in each column in the first resolution is G times the number of pixels in each column in the second resolution, and V and G are positive integers greater than 1;
dividing each V column of data lines of the display panel from a 1 st column of data lines into one group and connecting each group of V column of data lines together, and/or dividing each G row of scanning lines of the display panel from a 1 st row of scanning lines into one group and connecting each group of G rows of scanning lines together;
correspondingly inputting each line of data signals of the image display signals to each group or each data line of the display panel, so that the original image signals are displayed in the display panel at the first resolution and the second refresh rate according to the display image signals.
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