TW202011378A - Method for driving the multiplexer and display device - Google Patents

Abstract

A method for driving the multiplexer is disclosed herein. The method includes the following operations: distinguishing a plurality of data lines and a plurality of sub pixels to a plurality of groups according to an amount of multiplexer, wherein each groups includes a multiplexer, part of the data lines, and part of the sub pixels; calculating a transient value of each groups according to a gray value of first frame and a gray value of second frame; calculating a charging time of liquid crystal corresponding to the transient value of each groups; and determining an enable time of a driving signal of the multiplexer according to the charging time of liquid crystal.

Description

Multiplexer driving method and display device

This disclosure relates to a driving method and a display device, in particular to a multiplexer driving method and a display device that can adjust the opening time of the multiplexer according to the display data.

Low temperature poly-silicon thin-film transistors (LTPS TFT) have the characteristics of high carrier mobility and small size, and are suitable for display panels with high resolution, narrow bezels and low power consumption. At present, the industry widely uses multiplexer switches to reduce the use of source driver ICs, which can reduce the area of finished products and source driver ICs. However, when the number of multiplexer switches increases, the charging time of the liquid crystal decreases, which leads to insufficient charging of some sub-pixels, resulting in a problem of reduced contrast in some or all areas of the display panel due to insufficient charging .

The main purpose of the present invention is to provide a multiplexer driving method and a display panel using the same, which mainly calculates the length of time required to charge the liquid crystal by comparing the difference in display data, and adjusts the opening of the multiplexer Time, to reduce the use of source driver IC (Source driver IC), but also to solve the display device due to insufficient charging effect of reducing the display screen contrast.

To achieve the above purpose, the first aspect of this case is to provide a multiplexer driving method. The multiplexer driving method is applied to a display device, and includes the following steps: dividing a plurality of data lines and a plurality of sub-pixels into a plurality of groups according to the number of multiplexers, where each group includes a multiplexer and a data line Data lines and some sub-pixels of sub-pixels; calculate the transient value of each group according to the gray-scale value of the first frame and the gray-scale value of the second frame; calculate the corresponding value of each transient value Liquid crystal charging time; and determining the enabling time of the drive signal of the multiplexer according to the liquid crystal charging time.

The second aspect of this case is to provide a display device. The display device includes a plurality of sub-pixels, a plurality of data lines, a plurality of multiplexers, and a processor. A plurality of multiplexers are electrically coupled to the data line and the sub-pixels, and the processor is electrically coupled to the multiplexer. The processor is used to divide the data lines and sub-pixels into a plurality of groups according to the number of multiplexers, and calculate the transient value of each group according to the gray scale value of the first frame picture and the gray scale value of the second frame picture, and then Calculate the liquid crystal charging time corresponding to each transient value, and determine the enabling time of the drive signal of the multiplexer according to the liquid crystal charging time. Each group includes one of the multiplexers, some data lines of the data lines, and some sub-pixels of the sub-pixels.

The multiplexer driving method and the display panel using the method of the present invention can adjust the turn-on time of the multiplexer by comparing the difference of the display data and calculating the length of time required to charge the liquid crystal, so as to reduce the source driving chip The use of (Source driver IC) also solves the effect of reduced display contrast due to insufficient charging.

100‧‧‧Pixel circuit

110‧‧‧ processor

120、121、122‧‧‧multiplexer

130‧‧‧ Subpixel

140‧‧‧ source driver chip

200‧‧‧Multiplexer driving method

DL, DL(1)~DL(n), DL(n+1)~DL(2n)‧‧‧Data cable

GL, GL(1)~GL(n)‧‧‧Gate line

CTL‧‧‧Drive signal

SW1~SWn‧‧‧switch

P1_1, P1_2, P2_1, P2_2 ‧‧‧ subpixel

S210~S250, S221A~S222A, S221B~S222B

T1~T10‧‧‧time

In order to make the above and other objects, features, advantages and embodiments of the disclosed document more obvious and understandable, the drawings are described as follows: FIG. 1 is a circuit diagram of a display device according to an embodiment of the disclosed document; FIG. 2 Is a flowchart of a multiplexer driving method according to an embodiment of the present disclosure; FIG. 3A is a flowchart of step S220 shown according to an embodiment of the case; FIG. 3B is a flowchart according to another embodiment of the case Flowchart of step S220 shown; FIG. 4 is a schematic diagram of a portion of a display device according to an embodiment of the present disclosure; FIG. 5 is a timing diagram of the operation of a multiplexer according to an embodiment of the present disclosure; Figure 7 is a timing diagram of the operation of a multiplexer according to an embodiment of the present disclosure; Figure 7 is a flowchart of a multiplexer driving method according to an embodiment of the present disclosure; and Figure 8 is an implementation of a multiplexer according to the present disclosure Example of a schematic view of a part of a display device

The embodiments of the present invention will be described below in conjunction with related drawings. In the drawings, the same reference numerals indicate the same or similar elements or method flows.

Please refer to Figure 1. FIG. 1 is a circuit diagram of a display device 100 according to an embodiment of the present disclosure. As shown in FIG. 1, the display device 100 includes a processor 110, a plurality of multiplexers 120, a plurality of sub-pixels 130, a source driver chip 140, a plurality of data lines DL, and a plurality of gate lines GL(1) ~GL(n). The multiplexer 120 is electrically coupled to the data line DL, the sub-pixel 130 and the source driving chip 140. In the embodiment shown in FIG. 1, only two multiplexers 121 and 122 are shown. Multiplexer 121 controls switches SW1~SWn and connects data lines DL(1)~DL(n) and sub-pixel 130, and multiplexer 122 controls switches SW1~SWn and connects data line DL(n+1)~ DL(2n) and sub-pixel 130, multiplexers 121 and 122 each include a plurality of switches SW1~SWn, and each switch SW1~SWn is electrically connected to a data line DL. For example, the switch SW1 is electrically connected to the data line DL(1) and the data line DL(n+1), so when the switch SW1 is turned on, the data lines DL(1) and DL(n+1) will also simultaneously connect the data The voltage is written to the sub-pixel 130.

Please refer to Figure 1 and Figure 2 together. FIG. 2 is a flowchart of a multiplexer driving method 200 according to an embodiment of the present disclosure. In an embodiment, the multiplexer driving method 200 shown in FIG. 2 can be applied to the display device 100 shown in FIG. 1 and shown, and the processor 110 is used according to the steps described in the following multiplexer driving method 200 According to the liquid crystal charging time, the enabling time of the driving signal CTL of the multiplexer 120 is determined.

As shown in FIG. 2, the multiplexer driving method 200 first executes step S210 to divide the plurality of data lines DL and the plurality of sub-pixels 130 into a plurality of groups according to the number of multiplexers. In one embodiment, the number of multiplexers 120 is determined by the number of data lines and the data lines to which the multiplexer can be connected, and the data lines are grouped according to the number of switches. For example, if the number of data lines is 1024 And the multiplexer is a 1 to 2 multiplexer. In this case, 512 multiplexers are needed, and because the 1 to 2 multiplexer has only 2 switches, the data line is divided into 2 groups.

Next, the multiplexer driving method 200 executes step S220 to calculate the transient value of each group according to the grayscale value of the first frame picture and the grayscale value of the second frame picture. Please refer to FIG. 3A, which is a flowchart of step S220 according to some embodiments of the present case. As shown in FIG. 3A, step S220 includes step S221A and step S222A.

In an embodiment, the multiplexer driving method 200 performs step S221A, compares the gray level value of the first frame picture and the gray level value of the second frame picture corresponding to each sub-pixel in each group, and calculates Multiple comparison results. Please also refer to FIG. 4, which is a schematic diagram of a portion of the display device 100 according to an embodiment of the present disclosure. FIG. 4 is a diagram showing the part of FIG. 1 regarding switches and pixels. As shown in Figure 4, the data lines are divided into two groups (because there are two switches SW1, SW2), here the data line controlled by the switch SW1 is called the first group, and the data line controlled by the switch SW2 This is called the second group, and only the first group and the second group are used as examples. The data lines DL(1) and DL(n+1) controlled by the first group, and the data lines DL(2) and DL(n+2) controlled by the second group, assuming the data lines DL(1) and DL( 2). DL(n+1) and DL(n+2) are only electrically connected to one of the gate lines GL. Here, the first gate line GL(1) is taken as an example. Of course, the present disclosure is not limited to 2 groups, but may also be n groups as shown in FIG. 1 (because there are n switches SW1~SWn).

According to the above, the first group has {sub-pixel P11, sub-pixel P12} a total of 2 sub-pixels (located on the data line DL(1) and the data line DL(n+1)), assuming The gray scale value of the two sub-pixels P11 and P12 in the first frame picture is {50,50}, and the gray scale value in the second picture frame is {100,100}. The calculation method of the comparison result is the gray of the second frame picture The level value is subtracted from the gray level value of the first frame image and then the absolute value is taken. Therefore, the difference between the gray level value of the first frame image and the second frame image of the first two sub-pixels P11 and P12 is {50,50}. As can be seen from the above embodiment, the second group also has {sub-pixel P21, sub-pixel P22} a total of 2 sub-pixels (located on the data line DL(2) and the data line DL(n+2)), the second The two sub-pixels P21 and P22 in the group have a gray level value of {0,125} in the first frame and {255,255} in the second frame. The calculation method of the comparison result is the same as that of the first group. Also, the gray value of the second frame is subtracted from the gray value of the first frame, and then the absolute value is taken. Therefore, the first and second frames of the second group of two sub-pixels P21 and P22 The difference of the gray scale value is {255,130}.

Next, the multiplexer driving method 200 executes step S222A, and sets the maximum value in the comparison result to be the transient value. Continuing the above embodiment, the gray level value of the first frame of the first group and the gray level of the second frame are worth comparing to {50,50}, the difference between the two sub-pixels P11 and P12 in the first group The maximum value is 50, and the transient value of the first group is 50 after the above calculation. The gray level value of the first frame of the second group and the gray level of the second frame are worth comparing to {255,130}. The maximum difference between the two sub-pixels P21 and P22 in the second group is 255. The transient value of the second group is 255 after the above calculation.

In another embodiment, the multiplexer driving method 200 executes step S220, and the transient value required in step S220 can also be calculated according to the steps shown in FIG. 3B. Please refer to FIG. 3B, which is a flowchart of step S220 according to some embodiments of the present case. As shown in FIG. 3B, step S220 includes step S221B and step S222B.

According to the above, the multiplexer driving method 200 executes step S221B, averages the gray level values of the first frame picture corresponding to each sub-pixel in each group, and calculates the average value of the first frame picture; The gray level values of the second frame picture corresponding to each sub-pixel in a group are averaged, and the average value of the second frame picture is calculated. Please refer to FIG. 4 as well, as in the embodiment shown in FIG. 4, the first group has {sub-pixel P11, sub-pixel P12} a total of 2 sub-pixels, assuming that the first group has 2 sub-pixels P11 , The gray scale value of P12 in the first frame is {50,50}, and the gray scale value in the second frame is {100,100}. The average value of the first group of pictures in the first group is calculated by adding the grayscale values of the two sub-pixels P11 and P12 in the first group and dividing by the number of sub-pixels. The value is 50. Similarly, the average value of the second frame is calculated in the same way as described above, so the average value of the second group of frames in the first group is 100.

Then, as can be seen from the above embodiment, the second group also has {sub-pixel P21, sub-pixel P22} a total of 2 sub-pixels, and the second group of 2 sub-pixels P21, P22 in the gray level of the first frame The value is {0,50}, and the grayscale value of the second frame is {255,255}. The calculation method of the comparison result is the same as that of the first group, which is not repeated here. Therefore, the first frame of the second group The average value of the pictures is 25, and the average value of the second group of second-frame pictures is 255.

Next, the multiplexer driving method 200 executes step S222B to set the difference between the average value of the first frame picture and the average value of the second frame picture as a transient value. Continuing the above embodiment, the average value of the first group of frames in the first group is 50, the average value of the second group of frames in the first group is 100, and the calculation method of the transient value of the first group is The average value of one frame of pictures is subtracted from the average value of the second frame of pictures before taking the absolute value, so the transient value of the first group is 50. The average value of the first group of frames in the second group is 25, the average value of the second group of frames in the second group is 255, and the calculation method of the transient value of the second group is the same as that of the first group. This is not repeated here, so the transient value of the second group is 230.

Next, after the transient value is obtained from the steps shown in FIG. 3A or FIG. 3B, the multiplexer driving method 200 executes step S230 to calculate the liquid crystal charging time corresponding to each transient value. In an embodiment, the liquid crystal charging time corresponding to each transient value can be generated through a look-up table (LUT). For example, the comparison table can be represented by the following virtual code (Pseudo code): if(GroupK=0)MUXK=T0

TH1)MUXK=T1 else if(0<GroupK

TH1)MUXK=T1

TH2)MUXK=T2 else if(TH1<GroupK

TH2)MUXK=T2

⋮

THy)MUXK=Ty else if(THy-1<GroupK

THy)MUXK=Ty

In the above virtual code, GroupK is the transient value of the Kth group, K represents a total of several groups, TH1~THy represents the gray scale value, and THy is determined by the resolution of the panel (for example, 8bit display panel , THy is 255), T1~Ty represents the liquid crystal charging time, y depends on the characteristics of the liquid crystal and the resolution of the display panel, for example, under the 8bit display panel, the three colors of red, green and blue have a total of 256 gray levels. y depends on how many categories you want to divide the 256 gray scales. Assuming y=10, TH1 may be 25, and TH2 may be 50. Therefore, the transient value between 25~50 will correspond to the liquid crystal charging of T2. time. The K, y, and TH1~THy described here can be adjusted according to the actual situation, and this is only an exemplary description.

Next, the multiplexer driving method 200 executes step S240 to determine the enable time of the drive signal of the multiplexer according to the liquid crystal charging time. Please refer to FIG. 5, which is a multiplexer 120 according to an embodiment of the present disclosure. Timing diagram of operation. Continuing the above embodiment, the liquid crystal charging time corresponding to the first group is T1, and the liquid crystal charging time corresponding to the second group is T9, as shown in FIG. Take one group and the second group as an example (that is, the multiplexers 121 and 122 both control the switches SW1 and SW2). During the period when the gate line GL(1) is pulled up to the enable level, the first group The time when the switch SW1 corresponding to the group is enabled is T1, the time when the switch SW2 corresponding to the second group is enabled is T9, the liquid crystal charging time T1 plus the liquid crystal charging time T9 is the gate line GL(1) is pulled up Time to enable level. After the gate line GL(1) is pulled down to the disabled level, the gate line GL(2) is then pulled up to the enabled level, and the gate line GL(2) is pulled up to the enabled level In the period of time, the time when the switch SW1 corresponding to the first group is enabled is T3, the time when the switch SW2 corresponding to the second group is enabled is T5, and the liquid crystal charging time T3 plus the liquid crystal charging time T5 is the gate line The time when GL(2) is pulled up to enable level. It can be seen from the above that the total enable time of the switches SW1 and SW2 is the same as the enable time of the gate lines GL(1) and GL(2).

According to the above, the multiplexer driving method 200 executes step S250 to add the liquid crystal charging time of each group, calculate the total time, and determine the enabling time of the gate signal according to the total time. In one embodiment, the enabling time of the gate signal can be determined by the sum of the liquid crystal charging time of each group. Please also refer to FIG. 6, which is a timing diagram of the operation of the multiplexer 120 according to an embodiment of the present disclosure. As shown in Fig. 6, there are a total of switches SW1~SWn, a total of n switches, which can be understood that the multiplexers 121 and 122 both control the switches SW1~SWn, and the opening time of each switch SW1~SWn is in accordance with the aforementioned liquid crystal The calculation method of the charging time is determined, and the total enabling time of the switches SW1~SWn can determine the enabling time of the gate lines GL(1)~GL(n). It can be seen from the example shown in FIG. 6 that since the enable time of the gate lines GL(1) and GL(2) is determined according to the enable time of the switches SW1~SWn, for example, the gate line GL(1) The enable time is the sum of the opening time T1 of the switch SW1, the opening time T1 of the switch SW2, the opening time T6 of the switch SW3, and the opening time T2 of the switch SWn. The enabling time of the gate line GL(2) is the sum of the opening time T6 of the switch SW1, the opening time T6 of the switch SW2, the opening time T7 of the switch SW3, and the opening time T10 of the switch SWn. Therefore, the enabling times of the gate lines GL(1) and GL(2) are not necessarily the same.

In another embodiment, please refer to FIG. 7, which is a flowchart of a multiplexer driving method 700 according to an embodiment of the present disclosure. The multiplexer driving method 700 shown in FIG. 7 can be applied to the display device 100 shown in FIG. 1 and shown. The processor 110 is used to determine the liquid crystal charging time according to the steps described in the following multiplexer driving method 700 The enabling time of the drive signal CTL of the multiplexer 120. As shown in FIG. 7, the multiplexer driving method 700 first executes step S710 to divide the plurality of data lines DL and the plurality of sub-pixels 130 into a plurality of groups according to the number of multiplexers. The implementation of step S710 is the same as that of step S210, and will not be repeated here.

Next, the multiplexer driving method 700 executes step S720 to determine whether the grayscale value of the first frame picture corresponding to each sub-pixel in each group is the same as the grayscale value of the second frame picture. Please also refer to FIG. 8, which is a schematic diagram of a portion of the display device 100 according to an embodiment of the present disclosure. Figure 8 has a first group and a second group. The first group of gate lines GL(1) has 2 sub-pixels {sub-pixel P111, sub-pixel P121}, and the gate line GL(1 )'S second group has {sub-pixel P211, sub-pixel P221} a total of 2 sub-pixels; the first group of gate lines GL(2) has {sub-pixel P112, sub-pixel P122} a total of 2 Sub-pixels, the second group of gate lines GL(2) has {sub-pixel P212, sub-pixel P222} a total of 2 sub-pixels. For example, suppose the grayscale value of the first group of two sub-pixels P111 and P121 in the first frame is {50,50}, and the grayscale value in the second frame is {50,50}, so The first frame picture and the second frame picture of the two sub-pixels P111 and P121 of the first group are the same. Suppose that the two sub-pixels P211 and P221 of the second group have a grayscale value of {100,50} in the first frame, and a grayscale value of {100,50} in the second frame, so that the second group The first frame picture and the second frame picture of the two sub-pixels P211 and P221 are the same.

Next, the multiplexer driving method 700 executes step S721 to generate a first judgment result corresponding to each group. Following the above embodiment, the first frame picture and the second frame picture of the sub-pixel P111 in the first group are the same, and the first frame picture and the second frame picture of the sub-pixel P121 in the first group are also It is the same, so a logical or operation can be performed on the comparison result of the pixel P111 and the pixel P121 to generate a first judgment result corresponding to the first group. The first judgment result corresponding to the second group can also be obtained according to the above, and will not be repeated here. However, if the comparison results of any sub-pixels are different, the first judgment result will also be different when performing a logical or operation. Therefore, the case where step S720 is established should occur when the picture is still.

Next, the multiplexer driving method 700 executes step S730 to determine the gray level value of each sub-pixel of the N-th gate line in each group and the N-1 level of the gate line in each group Whether the gray scale value of each sub-pixel is the same. In the embodiment shown in FIG. 8, suppose that the gray level value of the two sub-pixels P111 and P121 of the first group of the gate line GL(1) is {50,50}, and it is assumed that the gate line GL(1) The grayscale value of the two sub-pixels P211 and P221 in the second group of the second group is {100,100}; the grayscale value of the two sub-pixels P112 and P122 of the first group of the gate line GL(2) is {50, 50}, assuming that the gray scale value of the two sub-pixels P212 and P222 of the second group of the gate line GL(2) is {100,100}. Compare the two sub-pixels P111, P121 of the first group of the gate line GL(1) and the two sub-pixels P112, P122 of the first group of the gate line GL(2) with each other, the comparison result is the same ; Then compare the two sub-pixels P211, P221 of the first group of the gate line GL(2) and the two sub-pixels P212, P222 of the first group of the gate line GL(2) with each other, the comparison result is For the same.

Next, the multiplexer driving method 700 executes step S731 to generate a second judgment result corresponding to each group. Following the above embodiment, the gray levels of the sub-pixel P112 and the pixel P111 in the first group of the gate line GL(2) are the same, and the sub-pixel P122 in the first group of the gate line GL(2) The gray scale value of the pixel P121 is also the same. Therefore, a logical or operation can be performed on the comparison result of the pixel P112 and the pixel P122 to generate a second judgment result corresponding to the first group. The second judgment result corresponding to the second group of the gate line GL(2) can also be obtained according to the above, and will not be repeated here. However, if the comparison results of any sub-pixels are different, the first judgment result will also be different when performing a logical or operation. Therefore, the situation that step S730 is established should occur when the grayscale values of the pixels on the two front and back gate lines are the same (probably the color blocks of the same color).

Next, the multiplexer driving method 700 executes step S740 to control the multiplexer corresponding to each group according to the first judgment result corresponding to each group and the second judgment result corresponding to each group. Continuing the above embodiment, the comparison of step S720 is in the comparison of the gray scale values of the sub-pixels of the current picture and the previous picture; and the comparison of step S730 is in the sub-pixels of the current gate line and the previous gate line Comparison of gray scale values. Perform a logical OR operation on the first judgment result and the second judgment result corresponding to the first group. If the result is "Yes", the processor 110 can use the control signal CTL to switch the switch SW1 to non-conduction during the data writing stage status. Perform a logical or operation on the first judgment result and the second judgment result corresponding to the second group. If the result is "Yes", the processor 110 can use the control signal CTL to switch SW2 during the data writing stage Switch to non-conducting state. However, if the first judgment result and the second judgment result have a "No" result in the aforementioned logical OR operation, the processor 110 will not have any additional control over the switches SW1, SW2, so during the data writing stage The switches SW1 and SW2 will normally open and close, and the processor 110 will not have additional control over the switches SW1 and SW2.

Next, if the determination of step S720 or step S730 is negative, then step S750 to step S780 are performed, and the implementation of step S750 to step S780 is the same as step S220 to step S250, and will not be repeated here. The execution order of step S720 and step S730 may be reversed. It is not necessary to perform step S720 before performing step S730, or step S730 may be performed before step S720.

In another embodiment, the display device 100 includes a processor 110, a plurality of multiplexers 120, a plurality of sub-pixels 130, and a plurality of data lines DL. The multiplexer 120 is electrically coupled to the data line DL and the sub-pixel 130, and the processor 110 is electrically coupled to the multiplexer 120. The processor 110 is used for determining the first enabling time according to the first gray level value and the second gray level value, and determining the second enabling time based on the third gray level value and the fourth gray level value. The output of the processor 110 has the first The driving signal CTL of the enable time drives one of the multiplexers 120, and outputs the driving signal CTL having the second enable time to drive the other of the multiplexer 120, wherein the first enable time and The second enabling time is different.

In summary, the multiplexer driving method and the display panel using the method of the present invention can adjust the turn-on time of the multiplexer by comparing the difference of the display data and calculating the length of time required to charge the liquid crystal. The gate driver circuit can also dynamically adjust the gate line on and off time according to the total time of the multiplexer. This not only reduces the use of the source driver IC (Source driver IC), but also ensures each sub-pixel All can be charged according to their own needs to achieve the effect of reducing the contrast of the display screen due to insufficient charging.

Certain words are used in the specification and patent application scope to refer to specific elements. However, those of ordinary skill in the art should understand that the same elements may be referred to by different nouns. The specification and the scope of patent application do not use the difference in names as a way to distinguish the components, but the difference in the functions of the components as the basis for distinguishing. "Inclusion" mentioned in the description and the scope of patent application is an open term, so it should be interpreted as "including but not limited to." In addition, "coupling" here includes any direct and indirect connection means. Therefore, if it is described that the first element is coupled to the second element, it means that the first element can be directly connected to the second element through electrical connection, wireless transmission, optical transmission, or other signal connection, or through other elements or connections The means is indirectly electrically or signally connected to the second element.

In addition, unless otherwise specified in the description, any singular expressions also include the meaning of plural expressions.

The above are only preferred embodiments of the present invention, and any equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

100‧‧‧Pixel circuit

110‧‧‧ processor

120、121、122‧‧‧multiplexer

130‧‧‧ Subpixel

140‧‧‧ source driver chip

DL, DL(1)~DL(n), DL(n+1)~DL(2n)‧‧‧Data cable

GL(1)~GL(n)‧‧‧Gate line

CTL‧‧‧Drive signal

SW1~SWn‧‧‧switch

Claims (17)

A multiplexer driving method applied to a display device includes: dividing a plurality of data lines and a plurality of sub-pixels into a plurality of groups according to the number of a multiplexer, wherein each group includes a multiplexer, Part of the data line of the data line and part of the sub-pixels of the sub-pixels; calculate a transient value for each group based on the gray-scale value of a first frame and the gray-scale value of a second frame Calculate a liquid crystal charging time corresponding to each transient value; and determine the enabling time of a drive signal of the multiplexer according to the liquid crystal charging time. The multiplexer driving method according to claim 1, further comprising: summing the charging time of the liquid crystal of each group to calculate a total time; and determining the enabling time of a gate signal according to the total time. The multiplexer driving method according to claim 1, further comprising: determining whether the gray scale value of the first frame picture and the gray scale value of the second frame picture corresponding to each sub-pixel in each group Same; and generate a first judgment result corresponding to each group. The multiplexer driving method according to claim 3, further comprising: determining the gray level value of each sub-pixel of the N-th gate line in each group and the N-1th in each group Whether the gray level value of each sub-pixel of the level gate line is the same; and a second judgment result corresponding to each group is generated. The multiplexer driving method according to claim 4, further comprising: controlling the multiplexer corresponding to each group according to the first judgment result corresponding to each group and the second judgment result corresponding to each group . The multiplexer driving method according to claim 1, wherein calculating the transient value of each group according to the gray scale value of the first frame picture and the gray scale value of the second frame picture, further comprising: comparing each Calculate a plurality of comparison results for the grayscale value of the first frame picture and the grayscale value of the second frame picture corresponding to each sub-pixel in a group; and set the maximum value among the comparison results to The transient value. The multiplexer driving method according to claim 1, wherein calculating the transient value of each group according to the gray scale value of the first frame picture and the gray scale value of the second frame picture further includes: The grayscale value of the first frame picture corresponding to each sub-pixel in a group is averaged to calculate the average value of the first frame picture; the corresponding The gray-scale values of the two frame pictures are averaged to calculate the average value of a second frame picture; and the difference between the average value of the first frame picture and the average value of the second frame picture is set as the transient value. The multiplexer driving method according to claim 1, wherein the liquid crystal charging time corresponding to each transient value is generated through a look-up table. A display device includes: a plurality of sub-pixels; a plurality of data lines; a plurality of multiplexers, electrically coupled to the data lines and the sub-pixels; and a processor, electrically coupled to the plurality of pixels A multiplexer, the processor is used to divide the data lines and the sub-pixels into a plurality of groups according to the number of a multiplexer, according to the gray scale value of a first frame and the gray scale of a second frame Value calculates a transient value for each group, then calculates a liquid crystal charging time corresponding to each transient value, and determines the enabling time of a driving signal of the multiplexer according to the liquid crystal charging time; wherein, each The group includes one of the multiplexers, part of the data lines of the data lines, and part of the sub-pixels of the sub-pixels. The display device according to claim 9, wherein the processor is further used to sum the charging time of the liquid crystal for each group, calculate a total time, and use the total time to determine the enabling time of a gate signal . The display device according to claim 9, wherein the processor is further used for performing the following steps: determining the gray level value of the first frame picture and the second frame picture corresponding to each sub-pixel in each group Whether the grayscale values of are the same; and a first judgment result corresponding to each group is generated. The display device according to claim 11, wherein the processor is further used to perform the following steps: determine the gray level value of each sub-pixel of the Nth-level data line in each group and the Whether the gray level value of each sub-pixel of the N-1th level data line is the same; and a second judgment result corresponding to each group is generated. The display device according to claim 12, wherein the processor is further configured to perform the following steps: control each group according to the first judgment result corresponding to each group and the second judgment result corresponding to each group Corresponding multiplexer. The display device according to claim 9, wherein the processor is further configured to perform the following steps: compare the grayscale value of the first frame picture corresponding to each sub-pixel in each group with the second frame picture Calculate the plural comparison results; and set the maximum value among the comparison results as the transient value. The display device according to claim 9, wherein the processor is further configured to perform the following steps: average the grayscale values of the first frame of pictures corresponding to each sub-pixel in each group, and calculate a first The average value of one frame picture; average the gray level value of the second frame picture corresponding to each sub-pixel in each group to calculate the average value of the second frame picture; and set the first frame picture The difference between the average value of and the average value of the second frame is the transient value. The display device according to claim 9, wherein the liquid crystal charging time corresponding to each transient value is generated through a look-up table. A display device includes: a plurality of sub-pixels; a plurality of data lines; a plurality of multiplexers, electrically coupled to the data lines and the sub-pixels; and a processor, electrically coupled to the plurality of pixels A multiplexer, the processor is used to determine a first enabling time based on a first gray level value and a second gray level value, and a second enabling level based on a third gray level value and a fourth gray level value At time, the processor outputs a driving signal with the first enabling time to drive one of the multiplexers, and outputs a driving signal with the second enabling time to drive one of the multiplexers Another; wherein, the first enabling time is different from the second enabling time.

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