CN107564455B - Display device and driving method thereof - Google Patents
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Abstract
The invention provides a display device and a driving method thereof. The display device comprises a plurality of data lines and a plurality of scanning lines. The plurality of data lines and the plurality of scanning lines are crossed to form a plurality of pixels. The driving method comprises the following steps: calculating a plurality of gray scale differences between two adjacent frames of a plurality of data voltages inputted to the plurality of pixels through each data line; calculating a total gray scale difference value between two adjacent frames of a plurality of data voltages input to a plurality of pixels through a plurality of data lines according to the plurality of gray scale difference values; judging a driving mode corresponding to the total gray scale difference value; and driving the display device according to the driving mode. The invention can effectively reduce the power consumption of the display device without reducing the efficiency of the display device.
Description
Technical Field
The present invention relates to a display device and a driving method thereof, and more particularly, to a display device and a driving method thereof capable of selecting different driving modes according to different loads.
Background
With the rapid development of display devices, people can use large and small display devices at any time in any occasion, such as: mobile phones, computers, etc. When the display device is used, different power consumption is caused every time the frame of the display device changes, and the power consumption directly influences more concerns of people for using the display device.
Various elements of the display device are often integrated through a precise design, so as to reduce power consumption and ensure a better display effect. A large number of scan driving circuits and data driving circuits are required in the display device to drive the respective pixels in the display device. Compared with a data driving circuit, the cost and the power consumption of the scanning driving circuit are lower, so that the number of data lines can be reduced through reasonable design, fewer data driving chips are used, and the purpose of reducing the power consumption of the display device is achieved.
For example, the left and right adjacent sub-pixels of the prior art hsd (half Source driving) pixel array share one data line, so that the number of data lines is reduced by half compared with the number of data lines of the conventional display device. The adjacent sub-pixels in the same row are connected with different scanning lines, and the sub-pixels in the same row, which are separated by one sub-pixel, are connected with the same scanning line, so that the number of the scanning lines is doubled compared with that of the scanning lines of the traditional display device, and the power consumption of the display device is reduced.
However, the number of scan lines is doubled, so that the scan time allocated to the scan lines is reduced, thereby reducing the charging time of each pixel. Because the data line has a certain impedance, the voltage signal will cause the delay distortion of the waveform in the transmission process, and cause the charging rate difference of each pixel, thereby generating the bright and dark lines.
Therefore, as people pay more attention to the problem of saving electricity and energy, it is one of the problems to be improved in the art to reduce the power consumption of the display device without reducing the performance of the display device.
Disclosure of Invention
Embodiments of the present invention provide a display device and a driving method thereof, so as to reduce power consumption of the display device without reducing performance of the display device.
One aspect of the present invention is to provide a driving method of a display device. The display device comprises a plurality of data lines and a plurality of scanning lines. The plurality of data lines and the plurality of scanning lines are crossed to form a plurality of pixels. The driving method comprises the following steps: calculating a plurality of gray scale differences between two adjacent frames of a plurality of data voltages inputted to the plurality of pixels through each data line; calculating a total gray scale difference value between two adjacent frames of a plurality of data voltages input to a plurality of pixels through a plurality of data lines according to the plurality of gray scale difference values; judging a driving mode corresponding to the total gray scale difference value; and driving the display device according to the driving mode.
Another aspect of the present invention is to provide a display device. The display device comprises a plurality of data lines, a plurality of scanning lines, a data driver, a scanning driver and a controller. And a plurality of scanning lines crossing the plurality of data lines to form a plurality of pixels. The data driver is used for outputting a plurality of data voltages to a plurality of data lines. The scan driver is used for outputting a plurality of scan signals to a plurality of scan lines. The controller is used for calculating a plurality of gray scale difference values between two adjacent frames of a plurality of data voltages input to the plurality of pixels through each data line, calculating a total gray scale difference value between two adjacent frames of a plurality of data voltages input to the plurality of pixels through the plurality of data lines according to the plurality of gray scale difference values, judging a driving mode corresponding to the total gray scale difference value, and driving the display device according to the driving mode.
Therefore, according to the technical aspects of the present invention, embodiments of the present invention provide a display device and a driving method thereof, and more particularly, to a display device and a driving method thereof capable of selecting different driving modes according to different loads, so as to effectively reduce the power consumption of the display device without reducing the performance of the display device.
Drawings
In order to make the aforementioned and other objects, features, advantages and embodiments of the invention more comprehensible, the following description is given:
FIG. 1 is a schematic diagram of a display device according to some embodiments of the invention;
FIG. 2 is a schematic diagram of a display device according to some embodiments of the invention;
FIG. 3 is a schematic diagram of a controller according to some embodiments of the invention;
FIG. 4 is a schematic diagram of a display device according to some embodiments of the invention;
FIG. 5 is a waveform diagram of a scanning signal wave according to some embodiments of the present invention;
FIG. 6 is a schematic diagram of a display device according to some embodiments of the invention;
FIG. 7 is a waveform diagram of a scanning signal wave according to some embodiments of the present invention;
FIG. 8 is a schematic diagram of a display device according to some embodiments of the invention;
FIG. 9 is a waveform diagram of a scanning signal wave according to some embodiments of the present invention;
FIG. 10 is a flow chart of a driving method according to some embodiments of the invention; and
FIG. 11 is a flow chart depicting one of the steps according to some embodiments of the present invention.
Description of the symbols:
100A, 100B, 200A, 200B, 200C: display device
110: data driver
130: scan driver
150: controller
170: active region
112: data controller
S1-SN: scanning line
D1-DM: data line
P11-PMN: pixel
A1-A3: switch with a switch body
152: comparator with a comparator circuit
154: counter with a memory
156: control unit
300A, 300B, 300C: scanning signal wave
VS1, VS2, VS 3: scanning signal
T1, T2, T3: pulse width
400: driving method
S410, S430, S450, S470: step (ii) of
S452, S454, S456, S458, S459: step (ii) of
Detailed Description
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. Elements and configurations in the specific illustrations are used in the following discussion to simplify the present disclosure. Any examples discussed are intended for illustrative purposes only and do not limit the scope or meaning of the invention or its illustrations in any way. Moreover, the present disclosure may repeat reference numerals and/or letters in the various examples, which are for purposes of simplicity and clarity, and do not in themselves dictate a relationship between the various embodiments and/or configurations discussed below.
The term (terms) used throughout the specification and claims has the ordinary meaning as commonly understood in the art, in the disclosure herein and in the claims, unless otherwise indicated. Certain terms used to describe the present disclosure will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present disclosure.
As used herein, to "couple" or "connect" may mean that two or more elements are in direct physical or electrical contact with each other, or in indirect physical or electrical contact with each other, and "couple" or "connect" may also mean that two or more elements are in operation or act with each other.
It will be understood that the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections. These elements, components, regions, layers and/or regions should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present invention. As used herein, the word "and/or" includes any combination of one or more of the associated listed items. Reference to "and/or" in this document refers to any combination of any one, all, or at least one of the listed elements.
Please refer to fig. 1. Fig. 1 is a schematic diagram of a display device 100A according to some embodiments of the invention. As shown in fig. 1, the display device 100A includes a data driver 110, a scan driver 130, a controller 150, and an active region 170. The scan driver 130 outputs scan signals to the scan lines S1 to SN. The data driver 110 outputs data voltages to the data lines D1 to DM. The active region 170 includes a plurality of pixels P11 to PMN formed by the intersections of the scan lines S1 to SN and the data lines D1 to DM. Each of the plurality of pixels P11-PMN is coupled to one of the scan lines S1-SN and one of the data lines D1-DM, respectively. The display screen of the active region 170 is changed according to the scan signals output to the scan lines S1 through SN and the data voltages output to the data lines D1 through DM. The display of the active area 170 displays several frames in one second, and when the data voltages inputted to the pixels P11-PMN between two adjacent frames are changed, the display of the active area 170 is changed accordingly.
In some embodiments, the controller 150 calculates a plurality of gray scale differences between two adjacent frames of the plurality of data voltages inputted to the plurality of pixels P11 through PMN through each data line, calculates a total gray scale difference between two adjacent frames of the plurality of data voltages inputted to the plurality of pixels P11 through PMN through the plurality of data lines D1 through DM according to the plurality of gray scale differences, determines a driving mode corresponding to the total gray scale difference, and drives the display device 100A according to the driving mode.
Please refer to fig. 2. Fig. 2 is a schematic diagram of a display device 100B according to some embodiments of the invention. The display device 100B is substantially the same as the display device 100A, except that the data driver 110 of the display device 100B further comprises a data controller 112. The data controller 112 is coupled to the controller 150, and the data controller 112 can control a plurality of switches in the data driver 110 to electrically connect the plurality of data lines D1 DM. For example, if the data controller 112 controls the switch a1 to be turned off, the data line D1 may be electrically connected to the data line D2, and if the data controller 112 controls the switch a1 to be turned on, the data line D1 and the data line D2 may not be electrically connected to each other. If the data controller 112 controls the switch a2 to be turned off, the data line D2 can be electrically connected to the data line D3, and if the data controller 112 controls the switch a2 to be turned on, the data line D2 and the data line D3 can be electrically disconnected from each other. And so on for the rest. In addition, for convenience of illustration, the switch A3 is disposed between the data line D3 and the data line DM, but in practice, the switch A3 is used to connect the data line D3 and its neighboring data lines.
Please refer to fig. 3. Fig. 3 is a schematic diagram of a controller 150 according to some embodiments of the invention. As shown in fig. 3, the controller 150 includes a comparator 152, a counter 154, and a control unit 156. In some embodiments, the comparator 152 compares gray scale differences between two adjacent frames of the data voltages input to the plurality of pixels P11 PMN through the data lines D1 DM and transmits the gray scale differences to the counter 154.
For example, as shown in FIG. 1, the data line D1 is coupled to the pixels P11-P1N. If the data voltage inputted to the pixel P11 through the data line D1 between two adjacent frames is +1V and-1V, respectively, the comparison result of the comparator 152 is the gray-scale difference 2V. If the data voltage inputted to the pixel P12 through the data line D1 between two adjacent frames is +1V and 0V, respectively, the comparison result of the comparator 152 is a gray-scale difference value of 1V. The comparator 152 calculates a plurality of gray-scale difference values respectively inputted to the pixels P11 through P1N between two adjacent frames through the data line D1, and transmits the calculated gray-scale difference values to the counter 154. When the gray-scale difference value is greater than the gray-scale difference threshold value, the counter 154 increments the first count value by 1. For example, if the gray level difference value inputted to the pixel P11 through the data line D1 between two adjacent frames is 2V and the gray level difference threshold value is 1V, the counter 154 increments the first count value by 1. The counter 154 does not increment the first count value by 1 if the gray-scale difference value inputted to the pixel P11 through the data line D1 between two adjacent frames is 0V and the gray-scale difference threshold value is 1V. The counter 154 compares the gray scale differences input to the pixels P11 to P1N via the data line D1 with the gray scale difference threshold to calculate a first count value of the data line D1, the counter 154 compares the gray scale differences input to the pixels P21 to P2N via the data line D2 with the gray scale difference threshold to calculate a first count value of the data line D2, and the first count values of the remaining data lines D3 to DM.
The counter 154 calculates a total gray scale difference value between two adjacent frames of the plurality of data voltages inputted to the plurality of pixels P11 PMN through the data lines D1 DM. In some embodiments, the total gray scale difference is calculated by the counter 154 incrementing the second count value by 1 when the first count value is greater than the first count threshold, and setting the total gray scale difference as the second count value when the second count value is counted. For example, assuming that a plurality of data lines D1-DM are respectively connected to 900 pixels, if the first count value of the data line D1 is 900 and the first count threshold value is 640, the counter 154 increments the second count value by 1. If the first count value of the data line D1 is 300 and the first count threshold is 640, the counter 154 does not increment the second count value by 1. After comparing all the data lines D1 through DM with the first count threshold, the counter 154 calculates a second count value, and sets the total gray-scale difference value as the second count value. That is, the counter 154 compares the first count value of each of the data lines D1-DM with the first count threshold, and calculates the second count value, which is the total gray-scale difference. For example, if the first count values of the data lines D1-DM are all greater than the first count threshold, the result of the counter 154 is that the second count value is M, and the total gray-scale difference value is set to M.
After the counter 154 calculates the total gray scale difference value, the total gray scale difference value is transmitted to the control unit 156. The control unit 156 determines a driving mode corresponding to the total gray-scale difference value. In some embodiments, the control unit 156 determines the driving mode to be the first driving mode when the total gray scale difference value is greater than or equal to the first total gray scale difference threshold, determines the driving mode to be the second driving mode when the total gray scale difference value is less than the first total gray scale difference threshold and greater than the second total gray scale difference threshold, and determines the driving mode to be the third driving mode when the total gray scale difference value is less than or equal to the second total gray scale difference threshold.
For example, in some embodiments, the first total grayscale difference threshold may be 2160 and the second total grayscale difference threshold may be 1080 for 3240 data lines of the display device. Specifically, the control unit 156 determines the driving mode as a normal mode (normal mode) when the total gray-scale difference is equal to or greater than 2160, determines the driving mode as a double-gate mode (bi-gate mode) when the total gray-scale difference is less than 2160 and greater than 1080, and determines the driving mode as a triple-gate mode (tri-gate mode) when the total gray-scale difference is less than or equal to 1080. The normal mode, the double gate mode, and the triple gate mode will be described below together with fig. 4 to 9. In response to different driving modes, the controller 150 adjusts the data voltages inputted to the data lines D1-DM and adjusts the scan signals inputted to the scan lines S1-SN. In some embodiments, the controller 150 may be a clock controller.
Please refer to fig. 4 and fig. 5. Fig. 4 is a schematic diagram illustrating a display device 200A according to an embodiment of the invention in a normal mode. Fig. 5 is a waveform diagram of the scanning signal wave 300A according to the embodiment of fig. 4. As can be seen from fig. 4, when the driving mode is the normal mode, the data lines D1 through DM are not connected to each other, i.e., each of the data lines D1 through DM receives a different data voltage. As can be seen from fig. 5, when the driving mode is the normal mode, the scan signal VS1 output to the scan line S1 and the scan signal VS2 output to the scan line S2 have the same pulse width T1, and the pulse of the scan signal VS1 and the pulse of the scan signal VS2 occur at the same time.
Please refer to fig. 6 and fig. 7. FIG. 6 is a schematic diagram of a display device 200B in a dual gate mode according to some embodiments of the invention. Fig. 7 is a waveform diagram of the scanning signal wave 300B according to the embodiment of fig. 6. As can be seen from fig. 6, when the driving mode is the dual gate mode, two adjacent data lines among the data lines D1 to DM are electrically connected to each other. For example, the data lines D1 and D2 are electrically connected to each other, the data lines D3 and D4 are electrically connected to each other, and so on. As can be seen from fig. 7, when the driving mode is the dual-gate mode, the scan signal VS1 output to the scan line S1 and the scan signal VS2 output to the scan line S2 have the same pulse width T2, and the pulse of the scan signal VS1 and the pulse of the scan signal VS2 occur sequentially.
The display device 200B is a schematic diagram of the display device 100A or 100B when the driving mode is the dual-gate mode. For example, in some embodiments, when the driving mode is the dual-gate mode, two adjacent data lines D1-DM of the display device 100B are electrically connected by controlling the switches of the data driver 110 of the display device 100B, as shown in the display device 200B.
Please refer to fig. 8 and fig. 9. Fig. 8 is a schematic diagram of a display device 200C in a tri-gate mode according to some embodiments of the invention. Fig. 9 is a waveform diagram of the scanning signal wave 300C according to the embodiment of fig. 8. As can be seen from fig. 8, when the driving mode is the triple-gate mode, three adjacent data lines among the plurality of data lines D1 to DM are electrically connected to each other. For example, the data lines D1, D2 and D3 are electrically connected to each other, the data lines D4, D5 and D6 are electrically connected to each other, and so on. As can be seen from fig. 9, when the driving mode is the tri-gate mode, the scan signal VS1 output to the scan line S1, the scan signal VS2 output to the scan line S2, and the scan signal VS3 output to the scan line S3 have the same pulse width T3, and the pulse of the scan signal VS1, the pulse of the scan signal VS2, and the pulse of the scan signal VS3 occur sequentially.
The display device 200C is a schematic diagram of the display device 100A or 100B when the driving mode is the triple-gate mode. For example, in some embodiments, when the driving mode is the triple-gate mode, every three adjacent data lines of the plurality of data lines D1-DM of the display device 200C are electrically connected by controlling the plurality of switches in the data driver 110 of the display device 200C, as shown in the display device 200C.
In an embodiment of the invention, a pulse width of the scan signal in the first driving mode is greater than a pulse width of the scan signal in the second driving mode, and the pulse width of the scan signal in the second driving mode is greater than a pulse width of the scan signal in the third driving mode. In other embodiments, the pulse width in the second drive mode is one-half of the pulse width in the first drive mode, and the pulse width in the third drive mode is one-third of the pulse width in the first drive mode. For example, referring to fig. 5, 7 and 9 together, the pulse width T2 is one-half of the pulse width T1, and the pulse width T3 is one-third of the pulse width T1. For example, in some embodiments, if the control unit 156 determines that the driving mode is the normal mode (normal mode), the scan signal is as shown in fig. 5. If the control unit 156 determines that the driving mode is a dual gate mode (bi-gate mode), the scan signals are as shown in fig. 7. If the control unit 156 determines that the driving mode is a tri-gate mode (tri-gate mode), the scan signals are as shown in fig. 9. The pulse width of the scanning signal in the double gate mode is one-half of the pulse width of the scanning signal in the normal mode, and the pulse width of the scanning signal in the triple gate mode is one-third of the pulse width of the scanning signal in the normal mode. For example, in some embodiments, the pulse width T1 is 12.9 microseconds (μ s) in the normal mode, the pulse width T2 is 6.45 microseconds (μ s) in the dual gate mode, and the pulse width T3 is 4.3 microseconds (μ s) in the triple gate mode, but the present invention is not limited to the above values, and is only used to illustrate one implementation manner of the present invention.
Please refer to fig. 10. Fig. 10 is a flow chart of a driving method 400 according to some embodiments of the invention. As shown in fig. 10, the driving method 400 includes the following steps:
step S410: calculating a plurality of gray scale differences between two adjacent frames of a plurality of data voltages input to the pixels through each data line;
step S430: calculating a total gray scale difference value between two adjacent frames of a plurality of data voltages input to the pixel through the data line according to the plurality of gray scale difference values;
step S450: judging a driving mode corresponding to the total gray scale difference value; and
step S470: and driving the display device according to the driving mode.
For easy understanding of the driving method 400 according to the embodiment of the present invention, please refer to fig. 1 to 9 together.
In step S410, a plurality of gray scale differences between two adjacent frames of the plurality of data voltages inputted to the pixels through each data line are calculated. In some embodiments, step S410 may be performed by the controller 150 in fig. 1 or fig. 2. For example, as shown in FIG. 1, the data line D1 is coupled to the pixels P11-P1N. If the data voltage inputted to the pixel P11 through the data line D1 between two adjacent frames is +1V and-1V, respectively, the calculation result of the controller 150 is the gray scale difference 2V. If the data voltage inputted to the pixel P12 through the data line D1 between two adjacent frames is +1V and 0V, respectively, the calculation result of the controller 150 is a gray-scale difference value of 1V.
In step S430, a total gray scale difference between two adjacent frames of the data voltages inputted to the pixels through the data lines is calculated according to the gray scale differences. In some embodiments, step S430 may be performed by the controller 150 in fig. 1 or fig. 2. For example, when the controller 150 calculates that the gray-scale difference value input to the pixel through the data line between two adjacent frames is greater than the gray-scale difference threshold, the controller 150 increments the first count value by 1. After the controller 150 calculates the first count values of the data lines D1 to DM, the controller 150 increments the second count value by 1 when the first count value is greater than the first count threshold. When the second count value is counted, the controller 150 sets the total gray-scale difference value as the second count value.
In step S450, a driving mode corresponding to the total gray-scale difference is determined. In some embodiments, step S450 may be performed by the controller 150 in fig. 1 or fig. 2.
Please refer to fig. 11. Fig. 11 is a flowchart of step S450 according to some embodiments of the invention. As shown in fig. 11, step S450 includes the following steps:
step S452: judging whether the total gray scale difference value is larger than or equal to a first total gray scale difference threshold value or not;
step S454: judging whether the total gray scale difference value is smaller than a first total gray scale difference threshold value and larger than a second total gray scale difference threshold value;
step S456: judging the driving mode to be a first driving mode;
step S458: judging the driving mode to be a second driving mode; and
step S459: the driving mode is determined to be the third driving mode.
In step S452, it is determined whether the total gray-scale difference is greater than or equal to the first total gray-scale difference threshold. If the total gray-scale difference value is greater than or equal to the first total gray-scale difference threshold value as a result of the determination in step S452, step S456 is performed. If the total gray-scale difference value is not greater than or equal to the first total gray-scale difference threshold value as a result of the determination in step S452, step S454 is executed.
In step S454, it is determined whether the total gray scale difference value is smaller than the first total gray scale difference threshold and larger than the second total gray scale difference threshold. If the total gray scale difference value is smaller than the first total gray scale difference threshold value and the total gray scale difference value is larger than the second total gray scale difference threshold value as a result of the determination in the step S454, the step S458 is executed. If the determination result in the step S454 is that the total gray scale difference is not smaller than the first total gray scale difference threshold and is larger than the second total gray scale difference threshold, the step S459 is executed.
In step S456, the driving mode is determined as the first driving mode. In some embodiments, the first driving mode is a normal mode. The detailed operation of the general mode is described in relation to fig. 4 and 5, and will not be repeated here.
In step S458, it is determined that the driving mode is the second driving mode. In some embodiments, the second drive mode is a double gate mode (bi-gate mode). The detailed operation of the dual gate mode is described in relation to fig. 6 and 7, and will not be repeated here.
In step S459, the driving mode is determined to be the third driving mode. In some embodiments, the third drive mode is a tri-gate mode. The detailed operation of the tri-gate mode is described in relation to fig. 8 and 9, and will not be repeated here.
Please refer back to fig. 10. In step S470, the display device is driven according to the driving mode. In some embodiments, the display device 200A of fig. 4 is a schematic diagram when the driving mode is the normal mode, and the scan signal wave 300A of fig. 5 is a scan signal when the driving mode is the normal mode. In some embodiments, the display device 200B of fig. 6 is illustrated when the driving mode is the dual-gate mode, and the scan signal wave 300B of fig. 7 is the scan signal when the driving mode is the dual-gate mode. In some embodiments, the display device 200C of fig. 8 is illustrated when the driving mode is the triple-gate mode, and the scan signal wave 300C of fig. 9 is the scan signal when the driving mode is the triple-gate mode. The detailed driving method of the normal mode, the double-gate mode, and the triple-gate mode is as described in relation to fig. 4 to 9, and will not be described again here.
Therefore, when the calculated total gray scale difference is larger, which represents that the load of the display device is higher, the scanning signal with longer pulse width is used for driving the display device, so that the pixel has longer charging time, and the distortion degree of the picture display device is further reduced. When the calculated total gray scale difference is smaller, the load of the display device is smaller, and the display device is driven by the scanning signal with the shorter pulse width because the higher distortion degree cannot be caused when the load of the display device is smaller, so that the power consumption of the display device is reduced.
In view of the foregoing, embodiments of the present invention provide a display device and a driving method thereof, and more particularly, to a display device and a driving method thereof capable of selecting different driving modes according to different loads, so as to effectively reduce the power consumption of the display device without reducing the performance of the display device.
Additionally, the above illustration includes exemplary steps in sequential order, but the steps need not be performed in the order shown. It is within the contemplation of the disclosure that the steps may be performed in a different order. Steps may be added, substituted, changed in order, and/or omitted as appropriate within the spirit and scope of embodiments of the present disclosure.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (8)
1. A driving method of a display device, the display device comprising a plurality of data lines and a plurality of scan lines, the data lines and the scan lines crossing to form a plurality of pixels, the method comprising:
calculating a plurality of gray scale differences between two adjacent frames of a plurality of data voltages inputted to the pixels through each of the data lines;
calculating a total gray scale difference value between two adjacent frames of the data voltage input to the pixel through the data line according to the gray scale difference value;
judging a driving mode corresponding to the total gray scale difference value; and
driving the display device according to the driving mode,
wherein the scan lines include a first scan line, a second scan line and a third scan line, and driving the display device according to the driving mode includes:
when the driving mode is determined to be a first driving mode, simultaneously outputting a first scanning signal, a second scanning signal and a third scanning signal in a period through the first scanning line, the second scanning line and the third scanning line;
when the driving mode is judged to be a second driving mode, the first scanning signal and the second scanning signal are sequentially output in the period; and
when the driving mode is determined to be a third driving mode, sequentially outputting the first scanning signal, the second scanning signal and the third scanning signal in the period,
wherein the first scan signal, the second scan signal and the third scan signal in the same driving mode have the same pulse width.
2. The driving method according to claim 1, wherein determining the driving mode corresponding to the total gray-scale difference value comprises:
when the total gray scale difference value is larger than or equal to a first total gray scale difference threshold value, judging the driving mode to be a first driving mode;
when the total gray scale difference value is smaller than the first total gray scale difference threshold value and larger than a second total gray scale difference threshold value, judging that the driving mode is a second driving mode; and
and when the total gray scale difference value is less than or equal to the second total gray scale difference threshold value, judging the driving mode to be a third driving mode.
3. The driving method according to claim 1, wherein the pulse width in the second driving mode is one-half of the pulse width in the first driving mode, and the pulse width in the third driving mode is one-third of the pulse width in the first driving mode.
4. A driving method of a display device, the display device comprising a plurality of data lines and a plurality of scan lines, the data lines and the scan lines crossing to form a plurality of pixels, the method comprising:
calculating a plurality of gray scale differences between two adjacent frames of a plurality of data voltages inputted to the pixels through each of the data lines;
calculating a total gray scale difference value between two adjacent frames of the data voltage input to the pixel through the data line according to the gray scale difference value;
judging a driving mode corresponding to the total gray scale difference value; and
driving the display device according to the driving mode,
wherein the scan lines include a first scan line, a second scan line and a third scan line, and driving the display device according to the driving mode includes:
when the driving mode is determined to be a first driving mode, simultaneously outputting a first scanning signal, a second scanning signal and a third scanning signal in a period through the first scanning line, the second scanning line and the third scanning line;
when the driving mode is judged to be a second driving mode, the first scanning signal and the second scanning signal are sequentially output in the period; and
when the driving mode is determined to be a third driving mode, sequentially outputting the first scanning signal, the second scanning signal and the third scanning signal in the period,
wherein the data line comprises a first data line, a second data line and a third data line, and driving the display device according to a driving mode comprises:
if the driving mode is judged to be the second driving mode, electrically connecting the first data line and the second data line; and
and if the driving mode is judged to be the third driving mode, electrically connecting the first data line, the second data line and the third data line.
5. A display device, comprising:
a plurality of data lines;
a plurality of scan lines crossing the data lines to form a plurality of pixels;
a data driver for outputting a plurality of data voltages to the data lines;
a scan driver for outputting a plurality of scan signals to the scan lines; and
a controller for calculating a plurality of gray scale differences between two adjacent frames of the data voltages inputted to the pixels through each of the data lines, calculating a total gray scale difference between two adjacent frames of the data voltages inputted to the pixels through the data lines according to the gray scale differences, determining a driving mode corresponding to the total gray scale difference, and driving the display device according to the driving mode,
when the driving mode is determined to be a first driving mode, the scan driver simultaneously outputs a first scan signal, a second scan signal and a third scan signal through the first scan line, the second scan line and the third scan line within a period; when the driving mode is determined to be a second driving mode, the scanning driver sequentially outputs the first scanning signal and the second scanning signal in the period; when the driving mode is determined to be a third driving mode, the scan driver sequentially outputs the first scan signal, the second scan signal and the third scan signal in the period.
6. The display device according to claim 5, wherein the first scan signal, the second scan signal, and the third scan signal in the same driving mode have the same pulse width.
7. The display device according to claim 6, wherein the pulse width in the second drive mode is one-half of the pulse width in the first drive mode, and wherein the pulse width in the third drive mode is one-third of the pulse width in the first drive mode.
8. A display device, comprising:
a plurality of data lines;
a plurality of scan lines crossing the data lines to form a plurality of pixels;
a data driver for outputting a plurality of data voltages to the data lines;
a scan driver for outputting a plurality of scan signals to the scan lines; and
a controller for calculating a plurality of gray scale differences between two adjacent frames of the data voltages inputted to the pixels through each of the data lines, calculating a total gray scale difference between two adjacent frames of the data voltages inputted to the pixels through the data lines according to the gray scale differences, determining a driving mode corresponding to the total gray scale difference, and driving the display device according to the driving mode,
the controller is further configured to electrically connect the first data line and the second data line when the driving mode is determined as a second driving mode, and electrically connect the first data line, the second data line and the third data line when the driving mode is determined as a third driving mode.
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| TW106124001 | 2017-07-18 | ||
| TW106124001A TWI620167B (en) | 2017-07-18 | 2017-07-18 | Display device and driving method thereof |
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| CN114937430B (en) * | 2022-05-30 | 2023-06-16 | 惠科股份有限公司 | Dynamic switching method of driving mode of display device and display device |
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| TWI620167B (en) | 2018-04-01 |
| CN107564455A (en) | 2018-01-09 |
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