Liquid crystal grating and stereoscopic display device

Abstract

A liquid crystal grating and a stereoscopic display device. The liquid crystal grating comprises a plurality of electrode sets (50), and each electrode set (50) comprises N driving electrodes arranged in sequence. In a same electrode set (50) of the liquid crystal grating, a data signal is written into a first driving electrode within an i-th data writing period, and a data signal is written into an n-th driving electrode within a j-th data writing period, wherein i and j are not equal, the difference value between i and j is smaller than N-1, 1≤i≤N, 1≤j≤N, i and j are positive integers, and N is a positive integer greater than 1.

Description

Liquid crystal grating and stereoscopic display device

[0001] This application claims priority to the Chinese patent application No. 202410536669.6 filed on April 29, 2024 with the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of display, for example, to a liquid crystal grating and a stereoscopic display device. BACKGROUND

[0003] The liquid crystal grating forms a sawtooth grating by writing a specific data signal to drive the liquid crystal molecules to flip. In an electrode group of the liquid crystal grating, a plurality of driving electrodes write data signals in sequence according to the arrangement position. When the conversion period is over, the voltage polarity of the electrodes in the electrode group starts to flip, and then there is a long positive-negative voltage difference at the junction position of the adjacent two electrode groups, resulting in the problem of uneven display.

[0004] SUMMARY

[0005] The present application provides a liquid crystal grating and a stereoscopic display device to reduce the length of time that the two driving electrodes closest to each other between adjacent electrode groups have a positive-negative voltage difference after the voltage polarity is converted, and to improve the uniformity of the image displayed by the liquid crystal grating.

[0006] In a first aspect, the embodiments of the present application provide a liquid crystal grating, which comprises a plurality of electrode groups, and each electrode group comprises N driving electrodes arranged in sequence.

[0007] At least part of the working period of the liquid crystal grating comprises a first stage, and the first stage comprises:

[0008] In the same electrode group, the first driving electrode is written with a data signal at the i-th data writing period, and the Nth driving electrode is written with a data signal at the j-th data writing period, i and j are not equal, and the difference between i and j is less than N-1.

[0009] Wherein, 1≤i≤N, 1≤j≤N, i, j are positive integers, and N is a positive integer greater than 1.

[0010] In a second aspect, the embodiments of the present application also provide a stereoscopic display device, which comprises the liquid crystal grating of any of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0011] FIG. 1 is a schematic diagram of the voltage writing sequence of a driving electrode in the related art;

[0012] FIG. 2 is a timing diagram of data writing of a driving electrode in the related art;

[0013] Figure 3 is a schematic diagram of a cross-sectional structure of a liquid crystal grating according to an embodiment of the present application;

[0014] Figure 4 is a timing diagram of data writing for a driving electrode according to an embodiment of the present application;

[0015] Figure 5 is a timing diagram of data writing for a driving electrode according to another embodiment of the present application;

[0016] Figure 6 is a timing diagram of data writing for a driving electrode according to yet another embodiment of the present application;

[0017] Figure 7 is a timing diagram of data writing for a driving electrode according to another embodiment of the present application;

[0018] Figure 8 is a timing diagram of data writing for a driving electrode according to another embodiment of the present application;

[0019] Figure 9 is a timing diagram of data writing for a driving electrode according to another embodiment of the present application;

[0020] Figure 10 is a timing diagram of data writing for a driving electrode according to another embodiment of the present application;

[0021] Figure 11 is a timing diagram of data writing for a driving electrode according to another embodiment of the present application;

[0022] Figure 12 is a timing diagram of data writing for a driving electrode according to another embodiment of the present application;

[0023] Figure 13 is a timing diagram of data writing for a driving electrode according to another embodiment of the present application;

[0024] Figure 14 is a timing diagram of data writing for a driving electrode according to yet another embodiment of the present application;

[0025] Figure 15 is a timing diagram of data writing for a driving electrode according to yet another embodiment of the present application;

[0026] Figure 16 is a timing diagram of data writing for a driving electrode according to yet another embodiment of the present application;

[0027] Figure 17 is a timing diagram of data writing for a driving electrode according to another embodiment of the present application;

[0028] Figure 18 is a timing diagram of data writing for a driving electrode according to another embodiment of the present application;

[0029] Figure 19 is a timing diagram of data writing for a driving electrode according to another embodiment of the present application;

[0030] Figure 20 is a timing diagram of data writing for a driving electrode according to yet another embodiment of the present application;

[0031] FIG. 21 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0032] FIG. 22 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0033] FIG. 23 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0034] FIG. 24 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0035] FIG. 25 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0036] FIG. 26 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0037] FIG. 27 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0038] FIG. 28 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0039] FIG. 29 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0040] FIG. 30 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0041] FIG. 31 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0042] FIG. 32 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0043] FIG. 33 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0044] FIG. 34 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0045] FIG. 35 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0046] FIG. 36 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0047] FIG. 37 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0048] FIG. 38 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0049] FIG. 39 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0050] FIG. 40 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0051] FIG. 41 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0052] FIG. 42 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0053] FIG. 43 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0054] FIG. 44 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0055] FIG. 45 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0056] FIG. 46 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0057] FIG. 47 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0058] FIG. 48 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0059] FIG. 49 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0060] FIG. 50 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0061] FIG. 51 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0062] FIG. 52 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0063] FIG. 53 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0064] FIG. 54 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0065] FIG. 55 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0066] FIG. 56 is a data write timing diagram of another driving electrode provided by an embodiment of the present application;

[0067] FIG. 57 is a data write timing diagram of another driving electrode provided by an embodiment of the application;

[0068] FIG. 58 is a data write timing diagram of another driving electrode provided by an embodiment of the application;

[0069] FIG. 59 is a data write timing diagram of another driving electrode provided by an embodiment of the application;

[0070] FIG. 60 is a data write timing diagram of another driving electrode provided by an embodiment of the application;

[0071] FIG. 61 is a data write timing diagram of another driving electrode provided by an embodiment of the application;

[0072] FIG. 62 is a data write timing diagram of another driving electrode provided by an embodiment of the application;

[0073] FIG. 63 is a data write timing diagram of another driving electrode provided by an embodiment of the application;

[0074] FIG. 64 is a data write timing diagram of another driving electrode provided by an embodiment of the application;

[0075] FIG. 65 is a data write timing diagram of another driving electrode provided by an embodiment of the application;

[0076] FIG. 66 is a data write timing diagram of another driving electrode provided by an embodiment of the application;

[0077] FIG. 67 is a data write timing diagram of another driving electrode provided by an embodiment of the application;

[0078] FIG. 68 is a data write timing diagram of another driving electrode provided by an embodiment of the application;

[0079] FIG. 69 is a data write timing diagram of another driving electrode provided by an embodiment of the application;

[0080] FIG. 70 is a data write timing diagram of another driving electrode provided by an embodiment of the application;

[0081] FIG. 71 is a data write timing diagram of another driving electrode provided by an embodiment of the application;

[0082] FIG. 72 is a data write timing diagram of a sub-group of electrodes provided by an embodiment of the application;

[0083] FIG. 73 is a data write timing diagram of another sub-group of electrodes provided by an embodiment of the application;

[0084] FIG. 74 is a data write timing diagram of another sub-group of electrodes provided by an embodiment of the application;

[0085] FIG. 75 is a data write timing diagram of another electrode sub-group according to an embodiment of the present application;

[0086] FIG. 76 is a data write timing diagram of another electrode sub-group according to an embodiment of the present application;

[0087] FIG. 77 is a data write timing diagram of another electrode sub-group according to an embodiment of the present application;

[0088] FIG. 78 is a data write timing diagram of another electrode sub-group according to an embodiment of the present application;

[0089] FIG. 79 is a data write timing diagram of another electrode sub-group according to an embodiment of the present application;

[0090] FIG. 80 is a circuit structure diagram of a liquid crystal grating according to an embodiment of the present application;

[0091] FIG. 81 is a timing diagram of a multiplexing circuit according to an embodiment of the present application;

[0092] FIG. 82 is a timing diagram of another multiplexing circuit according to an embodiment of the present application. DETAILED DESCRIPTION

[0093] The technical solutions of the present application will be described below in conjunction with the drawings in the embodiments of the present application, through specific embodiments. Obviously, the described embodiments are part of the embodiments of the present application, and all other embodiments obtained by a person of ordinary skill in the art without creative labor based on the embodiments of the present application, fall within the protection scope of the present application.

[0094] FIG. 1 is a voltage write sequence diagram of a driving electrode in the related art, referring to FIG. 1, the liquid crystal grating includes a plurality of electrode groups 50, each electrode group 50 includes six driving electrodes arranged in sequence, and the six driving electrodes arranged in sequence are respectively a first driving electrode D1, a second driving electrode D2, a third driving electrode D3, a fourth driving electrode D4, a fifth driving electrode D5 and a sixth driving electrode D6. In the last data write period t0 of the last period, the voltage written for the sixth driving electrode D6 is 6V. Thus, the voltages of the data signals written in sequence for the six driving electrodes according to the arrangement order of the spatial positions are respectively 1V, 2V, 3V, 4V, 5V and 6V.

[0095] Figure 2 is a data write timing diagram of a driving electrode in the related art, in which the voltage values of the driving electrode written with data signals during the data write period are omitted, and the driving electrodes arranged sequentially in space (in the horizontal direction of Figures 1 and 2) and sequentially written with data signals in time (in the vertical direction of Figures 1 and 2) are highlighted. As shown by the arrows in Figure 2, the polarity of the voltage of the driving electrodes in the electrode group 50 is sequentially changed in time order after the transformation period (i.e., in the current period). The writing order of the first driving electrode D1 to the sixth driving electrode D6 in time is consistent with the writing order of the first driving electrode D1 to the sixth driving electrode D6 in space. In the 1st data write period t1, the voltage written by the first driving electrode D1 changes from 1V in the previous period to -1V in the current period. In the 2nd data write period t2, the voltage written by the second driving electrode D2 changes from 2V in the previous period to -2V in the current period. In the 3rd data write period t3, the voltage written by the third driving electrode D3 changes from 3V in the previous period to -3V in the current period. In the 4th data write period t4, the voltage written by the fourth driving electrode D4 changes from 4V in the previous period to -4V in the current period. In the 5th data write period t5, the voltage written by the fifth driving electrode D5 changes from 5V in the previous period to -5V in the current period. In the 6th data write period t6, the voltage written by the sixth driving electrode D6 changes from 6V in the previous period to -6V in the current period.

[0096] Referring to Figures 1 and 2, the two electrode groups 50 are respectively the first electrode group 501 and the second electrode group 502 which are adjacent. During the voltage polarity transformation, there is a large positive-negative voltage difference (6V-(-1V)=7V) between the last driving electrode (the sixth driving electrode D6) of the first electrode group 501 and the first driving electrode D1 of the second electrode group 502, i.e., there is a positive-negative voltage difference between the two driving electrodes closest in distance between the two adjacent electrode groups 50. As shown by the dashed oval in Figure 2, this large positive-negative voltage difference lasts from the 1st data write period t1 to the 5th data write period t5, and the large positive-negative voltage difference lasts for 5 data write periods. It can be understood that when the electrode group 50 includes N driving electrodes, the last driving electrode of the first electrode group 501 and the first driving electrode of the second electrode group 502 have a positive-negative voltage difference that lasts for N-1 data write periods. The long positive-negative voltage difference means that the two driving electrodes closest in distance between the adjacent electrode groups have a long transverse electric field, which long-term affects the normal deflection angle of the liquid crystal molecules, causes the image quality corresponding to the junction position between the adjacent electrode groups to decrease, and is visible to the human eye, thereby affecting the display effect of the image projected by the liquid crystal grating to the view window and affecting the uniformity of the display image projected by the liquid crystal grating.

[0097] To solve the above technical problems, the embodiment of the present application provides a liquid crystal grating, which comprises a plurality of electrode groups, and each electrode group comprises N driving electrodes arranged in sequence. At least part of the working period of the liquid crystal grating comprises a first stage. In the first stage, in the same electrode group, the first driving electrode is written with a data signal in the ith data writing period, and the Nth driving electrode is written with a data signal in the jth data writing period, i and j are not equal, and the difference between i and j is less than N-1. 1≤i≤N, 1≤j≤N, i and j are positive integers, and N is a positive integer greater than 1. In this way, in the same electrode group, the difference between the number of data writing periods between the first driving electrode and the Nth driving electrode is less than N-1. The driving electrodes with the same order number in different electrode groups write data signals in the same data writing period. For example, two electrode groups are adjacent first and second electrode groups. The first driving electrode in the first electrode group and the first driving electrode in the second electrode group write data signals in the same data writing period, and the second driving electrode in the first electrode group and the second driving electrode in the second electrode group write data signals in the same data writing period. Therefore, in the adjacent electrode groups, the difference between the number of data writing periods between the Nth driving electrode of the first electrode group and the first driving electrode of the second electrode group is less than N-1. The embodiment of the present application reduces the number of data writing periods in which the two driving electrodes closest to each other between adjacent electrode groups have a positive and negative voltage difference after the voltage polarity is changed, reduces the length of time in which the two driving electrodes closest to each other between adjacent electrode groups have a positive and negative voltage difference after the voltage polarity is changed, and improves the uniformity of the image projected and displayed by the liquid crystal grating.

[0098] The above is the core idea of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0099] FIG. 3 is a schematic diagram of a cross-sectional structure of a liquid crystal grating according to an embodiment of the present application. As shown in the embodiment of FIG. 3, the liquid crystal grating includes a first substrate 10, a second substrate 20, and a liquid crystal layer 30. The liquid crystal layer 30 is located between the first substrate 10 and the second substrate 20. The liquid crystal layer 30 includes a plurality of liquid crystal molecules, which can be positive liquid crystal molecules or negative liquid crystal molecules. The liquid crystal grating further includes a counter electrode 40 and a plurality of electrode groups 50. The electrode groups 50 are located between the first substrate 10 and the liquid crystal layer 30 in a direction perpendicular to the plane on which the first substrate 10 lies. The electrode groups 50 include N driving electrodes arranged in sequence. The counter electrode 40 is located between the second substrate 20 and the liquid crystal layer 30 in a direction perpendicular to the plane on which the first substrate 10 lies. A first dielectric layer (not shown in the figure) can be included between the first substrate 10 and the electrode groups 50, and a second dielectric layer (not shown in the figure) can be included between the second substrate 20 and the counter electrode 40. The first dielectric layer and the second dielectric layer can protect the liquid crystal grating from the external environment, and can effectively isolate the charges between the electrodes to prevent leakage of the charges and occurrence of electric arcs, thereby ensuring normal operation of the liquid crystal grating. The driving electrodes 510 are independently arranged, and a gap is provided between adjacent driving electrodes 510. The counter electrode 40 can be a full-area electrode. When a voltage difference exists between the driving electrodes 510 and the counter electrode 40, a longitudinal electric field is formed between the driving electrodes 510 and the counter electrode 40, and the liquid crystal molecules in the liquid crystal layer 30 can be driven to rotate by the longitudinal electric field.

[0100] FIG. 4 is a timing diagram of data writing of a driving electrode according to an embodiment of the present application. As shown in FIG. 4, at least part of the working period of the liquid crystal grating includes a first stage, which includes: in the same electrode group 50, a first driving electrode is written with a data signal in an i-th data writing period, and an N-th driving electrode is written with a data signal in a j-th data writing period, i and j are not equal, and the difference between i and j is less than N-1. Wherein, 1≤i≤N, 1≤j≤N, i and j are positive integers, and N is a positive integer greater than 1.

[0101] In the N data write periods, the N driving electrodes are written with data signals one by one, and any two driving electrodes are written with data signals in different data write periods. In other words, in the N data write periods, the N driving electrodes are written with data signals one by one, and each driving electrode is written with data signals in different data write periods. When the first driving electrode is written with data signals in the first data write period t1 and the Nth driving electrode is written with data signals in the Nth data write period, the difference between i and j is equal to N-1. Therefore, to ensure that the difference between i and j is less than N-1, it means that the first driving electrode is not written with data signals in the first data write period t1 and / or the Nth driving electrode is not written with data signals in the Nth data write period. Similarly, when the first driving electrode is written with data signals in the Nth data write period and the Nth driving electrode is written with data signals in the first data write period t1, the difference between i and j is equal to N-1. Therefore, to ensure that the difference between i and j is less than N-1, it means that the Nth driving electrode is not written with data signals in the Nth data write period and / or the first driving electrode is not written with data signals in the first data write period t1. In this way, the difference between the number of data write periods between the first driving electrode and the Nth driving electrode in the same electrode group 50 is less than N-1. Since the driving electrodes 510 at the same position in different electrode groups 50 are written with data signals in the same data write period. In adjacent electrode groups 50, the difference between the number of data write periods between the Nth driving electrode of the first electrode group 501 and the first driving electrode of the second electrode group 502 is less than N-1, which reduces the length of time during which the two driving electrodes closest to each other between adjacent electrode groups have a positive and negative voltage difference after the voltage polarity is changed, and improves the uniformity of the image projected and displayed by the liquid crystal grating.

[0102] For example, as shown in the embodiment of FIG. 4, the same electrode group 50 includes six driving electrodes, and the six driving electrodes are written with data signals one by one in six data write periods. The six driving electrodes arranged in sequence are a first driving electrode D1, a second driving electrode D2, a third driving electrode D3, a fourth driving electrode D4, a fifth driving electrode D5, and a sixth driving electrode D6. The first driving electrode D1 is written with data signals in the first data write period t1, and the sixth driving electrode D6 is written with data signals in the fifth data write period t5. That is, N=6, i=1, and j=5, and the difference between i and j is 4. The length of time during which the two driving electrodes closest to each other between adjacent electrode groups 50 have a positive and negative voltage difference after the voltage polarity is changed is four data write periods, which is less than five data write periods in the related art. Therefore, the embodiment of the present application reduces the length of time during which the two driving electrodes closest to each other between adjacent electrode groups have a positive and negative voltage difference after the voltage polarity is changed, and improves the uniformity of the image projected and displayed by the liquid crystal grating.

[0103] It should be noted that FIG. 4 only exemplarily illustrates that the data signal is written to the first driving electrode D1 at the first data writing period t1, and the data signal is written to the sixth driving electrode D6 at the fifth data writing period t5, but the present application is not limited thereto, and in other embodiments, other writing sequences can also be used, as long as the data signal is written to the first driving electrode at the i th data writing period and the data signal is written to the N th driving electrode at the j th data writing period in the same electrode group 50, i and j are not equal, and the difference between i and j is less than N-1.

[0104] Optionally, continuing to refer to FIG. 4, the data signal is written to the k th driving electrode at the f th data writing period and the data signal is written to the k+1 th driving electrode at the g th data writing period in the same electrode group 50. f and g are not equal, and the difference between f and g is less than N-1, where 1≤f≤N, 1≤g≤N, 1≤k≤N-1, f, g, and k are positive integers.

[0105] The k th driving electrode and the k+1 th driving electrode are two adjacent driving electrodes in the same electrode group 50. The difference between f and g is less than N-1, which means that the data signal is not written to the k th driving electrode at the first data writing period t1, and / or the data signal is not written to the k+1 th driving electrode at the N th data writing period. The data signal is not written to the k+1 th driving electrode at the first data writing period t1, and / or the data signal is not written to the k th driving electrode at the N th data writing period. The embodiments of the present application can reduce the number of data writing periods in which there is a voltage difference between adjacent driving electrodes 510 in the same electrode group 50, reduce the length of time in which there is a voltage difference between adjacent driving electrodes 510 in the same electrode group 50, and improve the uniformity of the image projected and displayed by the liquid crystal grating.

[0106] Exemplarily, in the embodiment shown in FIG. 4, the data signal is written to the fourth driving electrode D4 at the second data writing period t2, and the data signal is written to the fifth driving electrode D5 at the sixth data writing period t6. f=2, g=6, k=4, and N=6, and the difference between f and g is 4. That is, in the same electrode group 50, there are four data writing periods in which there is a voltage difference between adjacent driving electrodes 510, which reduces the length of time in which there is a voltage difference between adjacent driving electrodes 510 in the same electrode group 50. In addition, in the embodiment shown in FIG. 4, the number of data writing periods in which there is a voltage difference between adjacent driving electrodes 510 in the same electrode group 50 can also include one data writing period or two data writing periods, which further improves the uniformity of the image projected and displayed by the liquid crystal grating compared to the scheme in the related art in which there are five data writing periods.

[0107] It should be noted that FIG. 4 only exemplarily illustrates that the number of data write periods in which the voltage difference exists between adjacent drive electrodes 510 includes 1 data write period, 2 data write periods and 4 data write periods, but is not limited thereto.

[0108] Optionally, continuing to refer to FIG. 4, in the same electrode group 50, the kth drive electrode is written with a data signal in the fth data write period, and the s th drive electrode is written with a data signal in the f+1th data write period, the kth drive electrode and the s th drive electrode are spaced by at least one drive electrode. Wherein, 1≤f≤N-1, 1≤k≤N, 1≤s≤N, f, k, s are positive integers.

[0109] In the adjacent two data write periods, the kth drive electrode and the s th drive electrode are written with data signals respectively. The kth drive electrode and the s th drive electrode are spaced by at least one drive electrode, so that at least part of the number of drive electrodes 510 are not written with data signals in time sequence one by one according to the arrangement position, the time length of the voltage difference existing between adjacent drive electrodes 510 in the same electrode group 50 is reduced, and the uniformity of the image projected and displayed by the liquid crystal grating is improved.

[0110] Exemplarily, in the embodiment shown in FIG. 4, the fourth drive electrode D4 is written with a data signal in the 2nd data write period t2, and the second drive electrode D2 is written with a data signal in the 3rd data write period t3. f=2, s=2, k=4, N=6, then the difference between s and k is 2. That is, in the same electrode group 50, the two drive electrodes written with data signals in the adjacent two data write periods are spaced by 1 drive electrode.

[0111] FIG. 5 is another data write timing diagram of a drive electrode provided by an embodiment of the present application, and FIG. 6 is still another data write timing diagram of a drive electrode provided by an embodiment of the present application. Referring to FIGS. 5 and 6, i=1, j=2, in the same electrode group 50, the 1st drive electrode is written with a data signal in the 1st data write period t1, and the Nth drive electrode is written with a data signal in the 2nd data write period t2.

[0112] Exemplarily, in the embodiment shown in FIG. 5, the 6 drive electrodes are arranged from left to right in sequence, the first drive electrode D1 is located at the leftmost side in the same electrode group 50, and the sixth drive electrode D6 is located at the rightmost side in the same electrode group 50. It should be noted that the arrangement order of the drive electrodes 510 is not limited by the embodiments of the present application. In other embodiments, as shown in FIG. 6, the 6 drive electrodes can also be arranged from right to left in sequence, that is, the first drive electrode D1 is located at the rightmost side in the same electrode group 50, and the sixth drive electrode D6 is located at the leftmost side in the same electrode group 50.

[0113] For example, in the embodiment shown in FIG. 5, the first data write period t1 is used to write data signals to the first driving electrode D1, and the second data write period t2 is used to write data signals to the sixth driving electrode D6. In the adjacent electrode groups 50, the difference between the number of data write periods between the last driving electrode (i.e., the sixth driving electrode D6) of the first electrode group 501 and the first driving electrode (i.e., the first driving electrode D1) of the second electrode group 502 is 1, which reduces the length of time during which the two driving electrodes closest to each other between the adjacent electrode groups 50 have a positive-negative voltage difference after the voltage polarity is changed, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0114] FIG. 7 is a data write timing diagram of another driving electrode provided by an embodiment of the present application. Referring to FIG. 7, the electrode group 50 includes a first-type sub-group 50A. In the same first-type sub-group 50A, the data signals are written to the driving electrodes 510 in the order from the edge of the first-type sub-group 50A to the center of the first-type sub-group 50A, and the first and last driving electrodes are alternately arranged. The edge of the first-type sub-group 50A can be understood as the first driving electrode or the last driving electrode of the first-type sub-group 50A. The center of the first-type sub-group 50A can be understood as the driving electrodes 510 in the central region of the first-type sub-group 50A. When the first-type sub-group 50A includes an even number of driving electrodes, the center of the first-type sub-group 50A includes two driving electrodes. When the first-type sub-group 50A includes an odd number of driving electrodes, the center of the first-type sub-group 50A includes one driving electrode.

[0115] For example, in the embodiment shown in FIG. 7, one first-type sub-group 50A is included in one electrode group 50. In the embodiment, the first driving electrode in the electrode group 50 is the first driving electrode in the first-type sub-group 50A, and the sixth driving electrode in the electrode group 50 is the sixth driving electrode in the first-type sub-group 50A. In the embodiment, the first-type sub-group 50A is the electrode group 50. When the first-type sub-group 50A includes an even number of driving electrodes (N is even), the time sequence of writing data signals to the N driving electrodes in the first-type sub-group 50A is: the first driving electrode, the Nth driving electrode, the second driving electrode, the N-1th driving electrode, the (N-2)th driving electrode, the third driving electrode, the (N-3)th driving electrode, the (N-4)th driving electrode, the fourth driving electrode, the (N-5)th driving electrode, the fifth driving electrode, and the (N-6)th driving electrode. ​There are one driving electrode. On the one hand, within the same electrode group 50 (i.e., the first type of subgroup 50A), the difference in the number of data writing periods between the first driving electrode and the Nth driving electrode is 1. In adjacent electrode groups 50 (i.e., the first type of subgroup 50A), the difference in the number of data writing periods between the Nth driving electrode of the first electrode group 501 and the first driving electrode of the second electrode group 502 is also 1. This reduces the time length during which the two closest driving electrodes in adjacent first type subgroups 50A have a positive and negative voltage difference after voltage polarity reversal. On the other hand, within the same electrode group 50 (i.e., the first type of subgroup 50A), since data signals are written to the driving electrodes 510 in an alternating manner, the number of data writing periods between adjacent driving electrodes at the center of the first type of subgroup 50A, where adjacent data writing periods are for adjacent driving electrodes, is 2, except at the center of the first type of subgroup 50A. In other words, within the same first type subgroup 50A, the number of data writing periods with a voltage difference between adjacent driving electrodes 510 is one or two, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0116] In the embodiment shown in Figure 7, taking N=6 as an example, the time sequence of writing data signals to the 6 driving electrodes is as follows: the 1st driving electrode (first driving electrode D1), the 6th driving electrode (sixth driving electrode D6), the 2nd driving electrode (second driving electrode D2), the 5th driving electrode (fifth driving electrode D5), the 3rd driving electrode (third driving electrode D3), and the 4th driving electrode (fourth driving electrode D4).

[0117] It is understood that Figure 7 is only an exemplary embodiment, but is not intended to limit the scope of the invention. Other embodiments will be described below with reference to the accompanying drawings.

[0118] Figure 8 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 8, an electrode group 50 includes a first subgroup 50A. In this embodiment, the first subgroup 50A is the electrode group 50. During the first data writing period t1, the Nth driving electrode writes a data signal; during the second data writing period t2, the first driving electrode writes a data signal; and when the first subgroup 50A includes an even number of driving electrodes (N is even), the time order of the N driving electrode write data signals is: Nth driving electrode, 1st driving electrode, (N-1)th driving electrode, 2nd driving electrode, ..., ... The driving electrode, the first N driving electrodes. In this way, in the adjacent electrode groups 50 (i.e., the first type of sub-group 50A), the difference in the number of data writing time periods between the Nth driving electrode of the first electrode group 501 and the 1st driving electrode of the second electrode group 502 is 1, which reduces the length of time during which the two driving electrodes closest to each other between adjacent first type of sub-groups 50A have a positive-negative voltage difference after the voltage polarity is changed. In addition, in the same first type of sub-group 50A, the number of data writing time periods during which there is a voltage difference between adjacent driving electrodes 510 is 1 or 2, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0119] The example in FIG. 8 is explained with N = 6, i.e., the time sequence of writing data signals by the 6 driving electrodes is: the 6th driving electrode (sixth driving electrode D6), the 1st driving electrode (first driving electrode D1), the 5th driving electrode (fifth driving electrode D5), the 2nd driving electrode (second driving electrode D2), the 4th driving electrode (fourth driving electrode D4), and the 3rd driving electrode (third driving electrode D3).

[0120] FIG. 9 is a data writing timing diagram of another driving electrode provided in an embodiment of the present application. As shown in the embodiment of FIG. 9, one electrode group 50 includes one first type of sub-group 50A, which in this embodiment is the electrode group 50. When the 1st data writing time period t1 is for writing a data signal by the 1st driving electrode, the 2nd data writing time period t2 is for writing a data signal by the Nth driving electrode, and the first type of sub-group 50A includes an odd number of driving electrodes (N is an odd number), the time sequence of writing data signals by the N driving electrodes is: the 1st driving electrode, the Nth driving electrode, the 2nd driving electrode, the N-1th driving electrode,..., the (N / 2+1)th driving electrode, the (N / 2-1)th driving electrode,..., the 3rd driving electrode, the 2nd driving electrode, the 1st driving electrode, the 2nd driving electrode, the 3rd driving electrode,..., the (N / 2+1)th driving electrode, the (N / 2-1)th driving electrode,..., the Nth driving electrode, and the 1st driving electrode. N driving electrodes. In this way, in the adjacent electrode groups 50 (i.e., the first type of sub-group 50A), the difference in the number of data writing time periods between the Nth driving electrode of the first electrode group 501 and the 1st driving electrode of the second electrode group 502 is 1, which reduces the length of time during which the two driving electrodes closest to each other between adjacent first type of sub-groups 50A have a positive-negative voltage difference after the voltage polarity is changed. In addition, in the same first type of sub-group 50A, the number of data writing time periods during which there is a voltage difference between adjacent driving electrodes 510 is 1 or 2, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0121] The time sequence of the data signal written by the 7 driving electrodes is: the 1st driving electrode (the first driving electrode D1), the 7th driving electrode (the seventh driving electrode D7), the 2nd driving electrode (the second driving electrode D2), the 6th driving electrode (the sixth driving electrode D6), the 3rd driving electrode (the third driving electrode D3), the 5th driving electrode (the fifth driving electrode D5), and the 4th driving electrode (the fourth driving electrode D4).

[0122] FIG. 10 is a data writing time sequence diagram of another driving electrode provided by the embodiment of the present application. As shown in the embodiment of FIG. 10, one electrode group 50 includes one first-type sub-group 50A. In this embodiment, the first-type sub-group 50A is the electrode group 50. When the 1st data writing period t1 is for the Nth driving electrode to write the data signal, the 2nd data writing period t2 is for the 1st driving electrode to write the data signal, and the first-type sub-group 50A includes an odd number of driving electrodes (N is an odd number), the time sequence of the data signal written by the N driving electrodes is: the Nth driving electrode, the 1st driving electrode, the N-1th driving electrode, the 2nd driving electrode, the N-2th driving electrode, the 3rd driving electrode, the N-3th driving electrode, the 4th driving electrode, the N-4th driving electrode, the 5th driving electrode, the N-5th driving electrode, the 6th driving electrode, the N-6th driving electrode, the 7th driving electrode, the N-7th driving electrode, the 8th driving electrode, the N-8th driving electrode, the 9th driving electrode, the N-9th driving electrode, and the 10th driving electrode. In this way, in the adjacent electrode groups 50 (i.e., the first-type sub-groups 50A), the difference between the number of data writing periods of the Nth driving electrode of the first electrode group 501 and the 1st driving electrode of the second electrode group 502 is 1, which reduces the length of time during which the two driving electrodes closest to each other between the adjacent first-type sub-groups 50A have a positive-negative voltage difference after the voltage polarity is changed. In addition, in the same first-type sub-group 50A, the number of data writing periods during which the adjacent driving electrodes 510 have a voltage difference is 1 or 2, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0123] The time sequence of the data signal written by the 7 driving electrodes is: the 7th driving electrode (the seventh driving electrode D7), the 1st driving electrode (the first driving electrode D1), the 6th driving electrode (the sixth driving electrode D6), the 2nd driving electrode (the second driving electrode D2), the 5th driving electrode (the fifth driving electrode D5), the 3rd driving electrode (the third driving electrode D3), and the 4th driving electrode (the fourth driving electrode D4).

[0124] It should be noted that the above embodiments are described by way of example with the N driving electrodes arranged from left to right, but the embodiments of the present application are not limited in this regard.

[0125] FIG. 11 is a timing diagram of data writing of another driving electrode according to an embodiment of the present application. Referring to FIG. 11, the electrode group 50 includes a second type of sub-group 50B. In the same second type of sub-group 50B, the first driving electrode in the second type of sub-group 50B sequentially writes data signals to the last driving electrode in the second type of sub-group 50B one by one. In the same second type of sub-group 50B, the arrangement order of the driving electrodes 510 is the same as the time order of the driving electrodes 510 writing data signals, or the arrangement order of the driving electrodes 510 is opposite to the time order of the driving electrodes 510 writing data signals. For example, when the driving electrodes in the electrode group 50 are arranged from left to right, the time order of the driving electrodes 510 writing data signals in the second type of sub-group 50B can be from left to right, or the time order of the driving electrodes 510 writing data signals in the second type of sub-group 50B can be from right to left.

[0126] For example, as shown in the embodiment of FIG. 11, the electrode group 50 includes one second type of sub-group 50B. The six driving electrodes in the electrode group 50 are arranged from left to right, the first driving electrode D1 is located at the leftmost side of the same electrode group 50, and the sixth driving electrode D6 is located at the rightmost side of the same electrode group 50. The second driving electrode D2 in the electrode group 50 is the first driving electrode in the second type of sub-group 50B, and the fourth driving electrode D4 in the electrode group 50 is the last driving electrode in the second type of sub-group 50B. When the first data writing period t1 is for the first driving electrode to write data signals, the second data writing period t2 is for the Nth driving electrode to write data signals, and the third data writing period t3 is for the (N-1)th driving electrode to write data signals, the time order of the driving electrodes in the second type of sub-group 50B writing data signals is the second driving electrode, the third driving electrode, …, the (N-2)th driving electrode. That is, the time order of the driving electrodes in the second type of sub-group 50B writing data signals is the same as the arrangement order of the driving electrodes 510. In this way, in the same second type of sub-group 50B, the number of data writing periods in which there is a voltage difference between adjacent driving electrodes 510 is one, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0127] The time sequence of writing data signals by the 6 driving electrodes is: the 1st driving electrode (the first driving electrode D1), the 6th driving electrode (the sixth driving electrode D6), the 5th driving electrode (the fifth driving electrode D5), the 2nd driving electrode (the second driving electrode D2), the 3rd driving electrode (the third driving electrode D3), and the 4th driving electrode (the fourth driving electrode D4) as an example illustrated in FIG. 11.

[0128] The above embodiment is described by taking the example that the arrangement order of the driving electrodes 510 in the second-type sub-group 50B is the same as the time sequence of writing data signals. The following describes the example that the arrangement order of the driving electrodes 510 in the second-type sub-group 50B is opposite to the time sequence of writing data signals by combining with specific drawings.

[0129] FIG. 12 is a data writing timing diagram of another driving electrode provided by the embodiment of the present application. As shown in the embodiment of FIG. 12, the first electrode group 50 includes one second-type sub-group 50B. The 6 driving electrodes in the electrode group 50 are arranged from left to right, the first driving electrode D1 is located at the leftmost side of the same electrode group 50, and the sixth driving electrode D6 is located at the rightmost side of the same electrode group 50. The 3rd driving electrode (the third driving electrode D3) in the electrode group 50 is the first driving electrode in the second-type sub-group 50B, and the 5th driving electrode (the fifth driving electrode D5) in the electrode group 50 is the last driving electrode in the second-type sub-group 50B. When the Nth driving electrode writes data signals in the 1st data writing period t1, the 1st driving electrode writes data signals in the 2nd data writing period t2, and the 2nd driving electrode writes data signals in the 3rd data writing period t3, the time sequence of writing data signals by the multiple driving electrodes in the second-type sub-group 50B is the N-1th driving electrode, the N-2th driving electrode, …, and the 3rd driving electrode. That is, the time sequence of writing data signals by the multiple driving electrodes 510 in the second-type sub-group 50B is opposite to the arrangement order of the driving electrodes 510 in the second-type sub-group 50B. In this way, in the same second-type sub-group 50B, the number of data writing periods in which there is a voltage difference between adjacent driving electrodes 510 is 1, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0130] The time sequence of writing data signals by the 6 driving electrodes is: the 6th driving electrode (the sixth driving electrode D6), the 1st driving electrode (the first driving electrode D1), the 2nd driving electrode (the second driving electrode D2), the 5th driving electrode (the fifth driving electrode D5), the 4th driving electrode (the fourth driving electrode D4), and the 3rd driving electrode (the third driving electrode D3) as an example illustrated in FIG. 12.

[0131] Figure 13 is a data writing timing diagram of another driving electrode provided by the embodiment of the present application. Referring to Figure 13, the second driving electrode, the third driving electrode,..., the N-1th driving electrode in the electrode group 50 constitute a second type sub-group 50B. In the same electrode group 50, the time sequence of writing data signals for the N driving electrodes is: the first driving electrode, the Nth driving electrode, the second type sub-group 50B.

[0132] For example, in the embodiment shown in Figure 13, one electrode group 50 includes one second type sub-group 50B. The six driving electrodes in the electrode group 50 are arranged from left to right in sequence. The second driving electrode (second driving electrode D2) in the electrode group 50 is the first driving electrode in the second type sub-group 50B, and the fifth driving electrode (fifth driving electrode D5) in the electrode group 50 is the last driving electrode in the second type sub-group 50B. In other words, the second driving electrode, the third driving electrode,..., the N-1th driving electrode in the electrode group 50 constitute the second type sub-group 50B. In the first data writing period t1, the first driving electrode writes a data signal, and in the second data writing period t2, the Nth driving electrode writes a data signal. The time sequence of writing data signals by the plurality of driving electrodes in the second type sub-group 50B is the same as or opposite to the arrangement sequence of the driving electrodes 510, and thus in the same electrode group 50, the time sequence of writing data signals for the N driving electrodes is: the first driving electrode, the Nth driving electrode, the second type sub-group 50B. In this way, in the same second type sub-group 50B, the number of data writing periods in which there is a voltage difference between adjacent driving electrodes 510 is one, and the difference in the number of data writing periods between the Nth driving electrode of the first electrode group 501 and the first driving electrode of the second electrode group 502 in adjacent electrode groups 50 is one, thereby reducing the length of time during which there is a positive-negative voltage difference between the two driving electrodes that are closest to each other between adjacent electrode groups 50 after the voltage polarity is changed, and thus improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0133] For example, in Figure 13, N=6 is taken as an example for illustration, i.e., the time sequence of writing data signals by the six driving electrodes is: the first driving electrode (first driving electrode D1), the sixth driving electrode (sixth driving electrode D6), the second driving electrode (second driving electrode D2), the third driving electrode (third driving electrode D3), the fourth driving electrode (fourth driving electrode D4), and the fifth driving electrode (fifth driving electrode D5).

[0134] FIG. 14 is a timing diagram of data writing of driving electrodes according to another embodiment of the present application, and FIG. 15 is a timing diagram of data writing of driving electrodes according to another embodiment of the present application. Referring to FIGS. 14 and 15, i=N-1, j=N, in the same electrode group 50, the first driving electrode is written with data signals in the N-1th data writing period, and the Nth driving electrode is written with data signals in the Nth data writing period.

[0135] For example, in the embodiment shown in FIG. 14, six driving electrodes are arranged from left to right, the first driving electrode D1 is located at the leftmost side of the same electrode group 50, and the sixth driving electrode D6 is located at the rightmost side of the same electrode group 50. The first driving electrode D1 is written with data signals in the 5th data writing period t5, and the sixth driving electrode D6 is written with data signals in the 6th data writing period t6. In other words, the two driving electrodes located at the edges of the electrode group 50 (the first driving electrode D1 and the sixth driving electrode D6) are written with data signals in the last data writing period and the second last data writing period, respectively. In the adjacent electrode groups 50, the difference between the last driving electrode (the sixth driving electrode D6) of the first electrode group 501 and the first driving electrode (the first driving electrode D1) of the second electrode group 502 is one data writing period, which reduces the time length of the positive and negative voltage difference between the two driving electrodes closest to each other in the adjacent electrode groups 50 after the voltage polarity is changed, and improves the uniformity of the image projected and displayed by the liquid crystal grating.

[0136] It should be noted that the present embodiment only limits the last two data writing periods to be the first driving electrode and the last driving electrode of the electrode group 50, respectively, and does not limit the driving electrode 510 written with data signals in the first data writing period. FIGS. 14 and 15 both take the driving electrode 510 located at the center of the electrode group 50 as an example to illustrate the first data writing period. For example, in the embodiment shown in FIG. 14, N is even, and the driving electrode 510 located at the center of the electrode group 50 is the third driving electrode D3 and the fourth driving electrode D4. The third driving electrode D3 is written with data signals in the 1st data writing period t1. In other embodiments, the fourth driving electrode D4 can also be written with data signals in the 1st data writing period t1. That is, when N is even, the driving electrode located at the center of the electrode group 50 is written with data signals in the 1st data writing period t1. For example, in the embodiment shown in FIG. 14, six driving electrodes are arranged from left to right, the first driving electrode D1 is located at the leftmost side of the same electrode group 50, and the sixth driving electrode D6 is located at the rightmost side of the same electrode group 50. The first driving electrode D1 is written with data signals in the 5th data writing period t5, and the sixth driving electrode D6 is written with data signals in the 6th data writing period t6. In other words, the two driving electrodes located at the edges of the electrode group 50 (the first driving electrode D1 and the sixth driving electrode D6) are written with data signals in the last data writing period and the second last data writing period, respectively. In the adjacent electrode groups 50, the difference between the last driving electrode (the sixth driving electrode D6) of the first electrode group 501 and the first driving electrode (the first driving electrode D1) of the second electrode group 502 is one data writing period, which reduces the time length of the positive and negative voltage difference between the two driving electrodes closest to each other in the adjacent electrode groups 50 after the voltage polarity is changed, and improves the uniformity of the image projected and displayed by the liquid crystal grating.​ the data signal is written to the driving electrodes.

[0137] Figure 16 is a timing diagram of data writing of a driving electrode according to an embodiment of the present application. Referring to Figure 16, the electrode group 50 includes a third type of sub-group 50C. In the same third type of sub-group 50C, the data signal is written to the driving electrodes 510 from the center of the third type of sub-group 50C to the edge of the third type of sub-group 50C, and the head and tail are alternately arranged. The edge of the third type of sub-group 50C can be understood as the first driving electrode or the last driving electrode of the third type of sub-group 50C. The center of the third type of sub-group 50C can be understood as the driving electrodes 510 in the central region of the third type of sub-group 50C. When the third type of sub-group 50C includes an even number of driving electrodes, the center of the third type of sub-group 50C includes two driving electrodes. When the third type of sub-group 50C includes an odd number of driving electrodes, the center of the third type of sub-group 50C includes one driving electrode.

[0138] For example, in the embodiment shown in Figure 16, the electrode group 50 includes one third type of sub-group 50C. The first driving electrode in the electrode group 50 is the first driving electrode in the third type of sub-group 50C, and the sixth driving electrode in the electrode group 50 is the sixth driving electrode in the third type of sub-group 50C. In this embodiment, the third type of sub-group 50C is the electrode group 50. When the first driving electrode is written with the data signal in the 5th(N-1) data writing period, the Nth driving electrode is written with the data signal in the 6th(N) data writing period, and the third type of sub-group 50C includes an even number of driving electrodes (N is even), the time sequence of writing the data signal to the N driving electrodes in the same electrode group 50 is: the first driving electrode, the (N-1)th driving electrode, the second driving electrode, the (N-2)th driving electrode, the third driving electrode, the (N-3)th driving electrode, and so on, until the Nth driving electrode. ​​​The driving electrodes are: the first driving electrode, the second driving electrode, and the third driving electrode. On one hand, within the same electrode group 50 (i.e., the third type subgroup 50C), the difference in the number of data writing periods between the first driving electrode and the Nth driving electrode is 1. In adjacent electrode groups 50 (i.e., the third type subgroup 50C), the difference in the number of data writing periods between the Nth driving electrode of the first electrode group 501 and the first driving electrode of the second electrode group 502 is also 1, reducing the time length during which the two closest driving electrodes in adjacent third type subgroups 50C have a positive and negative voltage difference after voltage polarity reversal. On the other hand, within the same electrode group 50 (i.e., the third type subgroup 50C), since data signals are written to the driving electrodes 510 alternately starting from the center of the third type subgroup 50C, adjacent data writing periods at the center of the third type subgroup 50C are for adjacent driving electrodes 510 respectively. That is, except for the center of the third type subgroup 50C, the number of data writing periods with a voltage difference between adjacent driving electrodes 510 at other locations is 2. In other words, within the same third subgroup 50C, the number of data writing periods with voltage differences between adjacent driving electrodes 510 is one or two, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0139] In the embodiment shown in Figure 16, with N=6, the time sequence of writing data signals to the 6 driving electrodes is as follows: the 3rd driving electrode (third driving electrode D3), the 4th driving electrode (fourth driving electrode D4), the 2nd driving electrode (second driving electrode D2), the 5th driving electrode (fifth driving electrode D5), the 1st driving electrode (first driving electrode D1), and the 6th driving electrode (sixth driving electrode D6).

[0140] It is understood that Figure 16 is only an exemplary embodiment, but is not intended to limit the scope of the invention. Other embodiments will be described below with reference to the accompanying drawings.

[0141] Figure 17 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 17, an electrode group 50 includes a third subgroup 50C. In this embodiment, the third subgroup 50C is the electrode group 50. The 5th (N-1)th data writing period is for the Nth driving electrode to write the data signal, and the 6th (N)th data writing period is for the 1st driving electrode to write the data signal. The third subgroup 50C includes an even number of driving electrodes (when N is even). The timing order of the N driving electrode data writing signals is as follows: The driving electrode, the first The driving electrode, the first The driving electrode, the first The sequence is: first driving electrode, ..., Nth driving electrode, 1st driving electrode. Thus, in adjacent electrode groups 50 (i.e., third subgroups 50C), the difference in the number of data writing periods between the Nth driving electrode of the first electrode group 501 and the 1st driving electrode of the second electrode group 502 is 1, reducing the time length during which a positive and negative voltage difference exists between the two closest driving electrodes in adjacent third subgroups 50C after a voltage polarity change. Furthermore, within the same third subgroup 50C, the number of data writing periods with a voltage difference between adjacent driving electrodes 510 is either 1 or 2, thereby improving the uniformity of the image projected and displayed by the liquid crystal raster.

[0142] Figure 17 illustrates an example with N=6, where the time sequence of the data signals written by the 6 driving electrodes is as follows: the 4th driving electrode (D4), the 3rd driving electrode (D3), the 5th driving electrode (D5), the 2nd driving electrode (D2), the 6th driving electrode (D6), and the 1st driving electrode (D1).

[0143] Figure 18 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 18, an electrode group 50 includes a third subgroup 50C, which in this embodiment is the electrode group 50. When the 6th (N-1)th data writing period is the first driving electrode data writing signal, and the 7th (N)th data writing period is the Nth driving electrode data writing signal, and the third subgroup 50C includes an odd number of driving electrodes (N is odd), the timing order of the N driving electrode data writing signals is as follows: The driving electrode, the first The driving electrode, the first The driving electrode, the first The driving electrodes are arranged in order: the first driving electrode, the second driving electrode, and the Nth driving electrode. Thus, in adjacent electrode groups 50 (i.e., the third type subgroup 50C), the difference in the number of data writing periods between the Nth driving electrode of the first electrode group 501 and the first driving electrode of the second electrode group 502 is 1, reducing the time length during which a positive and negative voltage difference exists between the two closest driving electrodes in adjacent third type subgroups 50C after a voltage polarity change. Furthermore, within the same third type subgroup 50C, the number of data writing periods with a voltage difference between adjacent driving electrodes 510 is either one or two, thereby improving the uniformity of the image projected and displayed by the liquid crystal raster.

[0144] Figure 18 illustrates an example with N=7, where the time sequence of the data signals written by the 7 driving electrodes is as follows: the 4th driving electrode (D4), the 3rd driving electrode (D3), the 5th driving electrode (D5), the 2nd driving electrode (D2), the 6th driving electrode (D6), the 1st driving electrode (D1), and the 7th driving electrode (D7).

[0145] Figure 19 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 19, an electrode group 50 includes a third subgroup 50C. In this embodiment, the third subgroup 50C is the electrode group 50. When the Nth driving electrode writes a data signal during the 6(N-1)th data writing period and the 1st driving electrode writes a data signal during the 7th(N-1)th data writing period, and the third subgroup 50C includes an odd number of driving electrodes (N is odd), the timing order of the N driving electrode write data signals is as follows: The driving electrode, the first The driving electrode, the first The driving electrode, the first The sequence is: first driving electrode, ..., Nth driving electrode, 1st driving electrode. Thus, in adjacent electrode groups 50 (i.e., third subgroups 50C), the difference in the number of data writing periods between the Nth driving electrode of the first electrode group 501 and the 1st driving electrode of the second electrode group 502 is 1, reducing the time length during which a positive and negative voltage difference exists between the two closest driving electrodes in adjacent third subgroups 50C after a voltage polarity change. Furthermore, within the same third subgroup 50C, the number of data writing periods with a voltage difference between adjacent driving electrodes 510 is either 1 or 2, thereby improving the uniformity of the image projected and displayed by the liquid crystal raster.

[0146] Figure 19 illustrates an example with N=7, where the time sequence of the data signals written by the 7 driving electrodes is as follows: the 4th driving electrode (fourth driving electrode), the 5th driving electrode (fifth driving electrode D5), the 3rd driving electrode (third driving electrode D3), the 6th driving electrode (sixth driving electrode D6), the 2nd driving electrode (second driving electrode D2), the 7th driving electrode (seventh driving electrode D7), and the 1st driving electrode (first driving electrode D1).

[0147] The above embodiments are all described using the example of an electrode group 50 including one electrode subgroup. The following describes the electrode group 50 including multiple electrode subgroups in conjunction with specific embodiments.

[0148] Figure 20 is a timing diagram of data writing of driving electrodes according to another embodiment of the present application. Referring to Figure 20, the electrode group 50 includes M electrode subgroups 520 arranged in sequence, and each electrode subgroup 520 includes a plurality of driving electrodes 510. The M electrode subgroups 520 are written with data signals one by one in M subgroup writing periods, and each subgroup writing period includes a plurality of data writing periods, where M is a positive integer greater than 1.

[0149] For example, in the embodiment shown in Figure 20, the same electrode group 50 includes 8 driving electrodes 510 arranged in sequence from left to right. The electrode group 50 includes two electrode subgroups 520, which are the first electrode subgroup 521 and the second electrode subgroup 522. Each electrode subgroup 520 includes 4 driving electrodes 510. The number of electrode subgroups 520 corresponds to the number of subgroup writing periods, and the number of data writing periods in each subgroup writing period corresponds to the number of driving electrodes 510 in each electrode subgroup 520. In the embodiment of the present application, scanning can be performed in the manner of electrode subgroup. That is, the driving electrodes 510 in one electrode subgroup 520 are written with data signals in one subgroup writing period, and the data signal writing of the driving electrodes 510 in another electrode subgroup 520 is performed after all the driving electrodes 510 in the electrode subgroup 520 are written with data signals. That is, the driving electrodes 510 in different electrode subgroups 520 are written with data signals in different subgroup writing periods. In this way, data signals are written one electrode subgroup by one electrode subgroup, which can reduce the length of time during which there is a voltage difference between the first driving electrode 510 and the last driving electrode 510 in the same electrode group 50, reduce the length of time during which there is a positive-negative voltage difference between the two driving electrodes closest to each other between adjacent electrode groups 50 after the voltage polarity is changed, and improve the uniformity of the image projected and displayed by the liquid crystal grating.

[0150] Figure 21 is a timing diagram of data writing of driving electrodes according to another embodiment of the present application. Referring to Figure 21, the plurality of electrode subgroups 520 include the first electrode subgroup 521 and the second electrode subgroup 522, the driving electrodes 510 in the first electrode subgroup 521 are written with data signals in the u-th subgroup writing period, and the driving electrodes 510 in the second electrode subgroup 522 are written with data signals in the v-th subgroup writing period, where v > u, and u and v are positive integers. The first electrode subgroup 521 is a third-type subgroup 50C, and in the same third-type subgroup 50C, the driving electrodes 510 are written with data signals from the center of the third-type subgroup 50C to the edge of the third-type subgroup 50C in an alternating manner from the beginning to the end. The second electrode subgroup 522 is a first-type subgroup 50A, and in the same first-type subgroup 50A, the driving electrodes 510 are written with data signals from the edge of the first-type subgroup 50A to the center of the first-type subgroup 50A in an alternating manner from the beginning to the end.

[0151] For example, as shown in the embodiment of FIG. 21, M=2, and the two electrode subsets 520 are a first electrode subset 521 and a second electrode subset 522. The first electrode subset 521 includes the first driving electrode to the hth driving electrode, and the second electrode subset 522 includes the (h+1)th driving electrode to the Nth driving electrode, where h is a positive integer greater than 1. The two subset write periods are a first subset write period and a second subset write period. The first subset write period includes the first data write period t1 to the hth data write period, and the second subset write period includes the (h+1)th data write period to the Nth data write period. When the first subset write period is used to write data signals to the driving electrodes 510 in the first electrode subset 521, the second subset write period is used to write data signals to the driving electrodes in the second electrode subset 522, and h and N are both even numbers, since the first electrode subset 521 is the third type of subset 50C and the second electrode subset 522 is the first type of subset 50A, the time sequence of writing data signals to the N driving electrodes 510 in the same electrode group 50 is: the Nth driving electrode, the (N-1)th driving electrode, the (h+2)th driving electrode, the (h+1)th driving electrode, the hth driving electrode, the first driving electrode, the (h+2)th driving electrode, the (h+1)th driving electrode, the hth driving electrode, the first driving electrode, the (h+2)th driving electrode, the (h+1)th driving electrode, the hth driving electrode, the first driving electrode, and so on. ​​​​​The data write sequence of the driving electrodes 510 in the first electrode subgroup 521 is from the center to the edge, and is alternately from the head to the tail, so the data write time of the first driving electrode is close to the last data write time period (the second last data write time period in the first subgroup write time period, i.e. the fifth data write time period t5) in the first subgroup write time period. The data write sequence of the driving electrodes 510 in the second electrode subgroup 522 is from the edge to the center, and is alternately from the head to the tail, so the data write time of the Nth driving electrode is close to the first data write time period (the second data write time period in the second subgroup write time period, i.e. the eighth data write time period t8) in the second subgroup write time period. After sequentially writing the data signals in each electrode subgroup 520, in the same electrode group 50, the data write time of the first driving electrode is close to the data write time of the last driving electrode (the difference is three data write time periods), and in the adjacent electrode groups 50, the data write time of the Nth driving electrode in the first electrode group 501 is close to the data write time of the first driving electrode in the second electrode group 502, which reduces the time length of the positive and negative voltage difference between the two driving electrodes closest to each other in the adjacent electrode groups 50 after the voltage polarity is changed. In addition, in the first electrode subgroup 521, the number of data write time periods in which there is a voltage difference between adjacent driving electrodes 510 is one or two. In the second electrode subgroup 522, the number of data write time periods in which there is a voltage difference between adjacent driving electrodes 510 is one or two, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0152] The time sequence of writing data signals by the 12 driving electrodes is: the 3rd driving electrode, the 4th driving electrode, the 2nd driving electrode, the 5th driving electrode, the 1st driving electrode, the 6th driving electrode, the 7th driving electrode, the 12th driving electrode, the 8th driving electrode, the 11th driving electrode, the 9th driving electrode, and the 10th driving electrode. In the 1st data writing period t1, the 3rd driving electrode D3 writes data signals; in the 2nd data writing period t2, the 4th driving electrode D4 writes data signals; in the 3rd data writing period t3, the 2nd driving electrode D2 writes data signals; in the 4th data writing period t4, the 5th driving electrode D5 writes data signals; in the 5th data writing period t5, the 1st driving electrode D1 writes data signals; in the 6th data writing period t6, the 6th driving electrode D6 writes data signals; in the 7th data writing period t7, the 7th driving electrode D7 writes data signals; in the 8th data writing period t8, the 12th driving electrode D12 writes data signals; in the 9th data writing period t9, the 8th driving electrode D8 writes data signals; in the 10th data writing period t10, the 11th driving electrode D11 writes data signals; in the 11th data writing period t11, the 9th driving electrode D9 writes data signals; and in the 12th data writing period t12, the 10th driving electrode D10 writes data signals.

[0153] In yet another embodiment, FIG. 22 is a data writing timing diagram of another driving electrode provided by the embodiments of the present application. As shown in the embodiment of FIG. 22, when h is an even number and N is an even number, the time sequence of writing data signals by the N driving electrodes 510 in the same electrode group 50 is: the 1st driving electrode, the 2nd driving electrode, the 3rd driving electrode, the 4th driving electrode, the 5th driving electrode, the 6th driving electrode, the 7th driving electrode, the 8th driving electrode, the 9th driving electrode, the 10th driving electrode, the 11th driving electrode, and the 12th driving electrode. ​​​​​The data writing sequence of the driving electrodes 510 in the first electrode subgroup 521 is from the center to the edge, and alternately from the head to the tail, so the data writing time of the first driving electrode is close to the last data writing time period (the second last data writing time period in the first subgroup writing time period, i.e., the fifth data writing time period t5) in the first subgroup writing time period. The data writing sequence of the driving electrodes 510 in the second electrode subgroup 522 is from the edge to the center, and alternately from the tail to the head, so the data writing time of the Nth driving electrode is the first data writing time period (the first data writing time period in the second subgroup writing time period, i.e., the seventh data writing time period t7) in the second subgroup writing time period. After sequentially writing the data signals in each electrode subgroup, the data writing time of the first driving electrode and the last driving electrode in the same electrode group 50 is close (differing by two data writing time periods), which reduces the time length of the positive and negative voltage difference between the two driving electrodes closest to each other in the adjacent electrode groups 50 after the voltage polarity is changed, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0154] The time sequence of writing the data signals by the N driving electrodes in the same electrode group 50 is: the third driving electrode (the third driving electrode D3), the fourth driving electrode (the fourth driving electrode D4), the second driving electrode (the second driving electrode D2), the fifth driving electrode (the fifth driving electrode D5), the first driving electrode (the first driving electrode D1), the sixth driving electrode (the sixth driving electrode D6), the twelfth driving electrode (the twelfth driving electrode D12), the seventh driving electrode (the seventh driving electrode D7), the eleventh driving electrode (the eleventh driving electrode D11), the eighth driving electrode (the eighth driving electrode D8), the tenth driving electrode (the tenth driving electrode D10), and the ninth driving electrode (the ninth driving electrode D9).

[0155] FIG. 23 is a data writing timing diagram of another driving electrode provided by an embodiment of the present application. As shown in the embodiment of FIG. 23, when h is an even number and N is an even number, the time sequence of writing the data signals by the N driving electrodes 510 in the same electrode group 50 is: the first driving electrode, the second driving electrode, the third driving electrode, the fourth driving electrode, the fifth driving electrode, the sixth driving electrode, the seventh driving electrode, the eighth driving electrode, the ninth driving electrode, the tenth driving electrode, the eleventh driving electrode, and the twelfth driving electrode. ​​​​​the first electrode subgroup 521 is the last data write time interval (the sixth data write time interval t6) in the first electrode subgroup. The data write time interval of the Nth driving electrode is close to the first data write time interval (the eighth data write time interval t8) in the second electrode subgroup. After the data signals are sequentially written in each electrode subgroup, the data write time of the first driving electrode and the last driving electrode in the same electrode group 50 is close (differing by three data write time intervals), which reduces the time length of the positive and negative voltage difference between the two driving electrodes closest to each other in the adjacent electrode groups 50 after the voltage polarity is changed, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0156] The time sequence of writing data signals by the N=12 driving electrodes is: the fourth driving electrode (the fourth driving electrode D4), the third driving electrode (the third driving electrode D3), the fifth driving electrode (the fifth driving electrode D5), the second driving electrode (the second driving electrode D2), the sixth driving electrode (the sixth driving electrode D6), the first driving electrode (the first driving electrode D1), the seventh driving electrode (the seventh driving electrode D7), the twelfth driving electrode (the twelfth driving electrode D12), the eighth driving electrode (the eighth driving electrode D8), the eleventh driving electrode (the eleventh driving electrode D11), the ninth driving electrode (the ninth driving electrode D9), and the tenth driving electrode (the tenth driving electrode D10).

[0157] The time sequence of writing data signals by the N=12 driving electrodes is: the fourth driving electrode (the fourth driving electrode D4), the third driving electrode (the third driving electrode D3), the fifth driving electrode (the fifth driving electrode D5), the second driving electrode (the second driving electrode D2), the sixth driving electrode (the sixth driving electrode D6), the first driving electrode (the first driving electrode D1), the seventh driving electrode (the seventh driving electrode D7), the twelfth driving electrode (the twelfth driving electrode D12), the eighth driving electrode (the eighth driving electrode D8), the eleventh driving electrode (the eleventh driving electrode D11), the ninth driving electrode (the ninth driving electrode D9), and the tenth driving electrode (the tenth driving electrode D10). The time sequence of writing data signals by the N=12 driving electrodes is: the fourth driving electrode (the fourth driving electrode D4), the third driving electrode (the third driving electrode D3), the fifth driving electrode (the fifth driving electrode D5), the second driving electrode (the second driving electrode D2), the sixth driving electrode (the sixth driving electrode D6), the first driving electrode (the first driving electrode D1), the seventh driving electrode (the seventh driving electrode D7), the twelfth driving electrode (the twelfth driving electrode D12), the eighth driving electrode (the eighth driving electrode D8), the eleventh driving electrode (the eleventh driving electrode D11), the ninth driving electrode (the ninth driving electrode D9), and the tenth driving electrode (the tenth driving electrode D10). The time sequence of writing data signals by the N=12 driving electrodes is: the fourth driving electrode (the fourth driving electrode D4), the third driving electrode (the third driving electrode D3), the fifth driving electrode (the fifth driving electrode D5), the second driving electrode (the second driving electrode D2), the sixth driving electrode (the sixth driving electrode D6), the first driving electrode (the first driving electrode D1), the seventh driving electrode (the seventh driving electrode D7), the twelfth driving electrode (the twelfth driving electrode D12), the eighth driving electrode (the eighth driving electrode D8), the eleventh driving electrode (the eleventh driving electrode D11), the ninth driving electrode (the ninth driving electrode D9), and the tenth driving electrode (the tenth driving electrode D10). The time sequence of writing data signals by the N=12 driving electrodes is: the fourth driving electrode (the fourth driving electrode D4), the third driving electrode (the third driving electrode D3), the fifth driving electrode (the fifth driving electrode D5), the second driving electrode (the second driving electrode D2), the sixth driving electrode (the sixth driving electrode D6), the first driving electrode (the first driving electrode D1), the seventh driving electrode (the seventh driving electrode D7), the twelfth driving electrode (the twelfth driving electrode D12), the eighth driving electrode (the eighth driving electrode D8), the eleventh driving electrode (the eleventh driving electrode D11), the ninth driving electrode (the ninth driving electrode D9), and the tenth driving electrode (the tenth driving electrode D10). The time sequence of writing data signals by the N=12 driving electrodes is: the fourth driving electrode (the fourth driving electrode D4), the third driving electrode (the third driving electrode D3), the fifth driving electrode (the fifth driving electrode D5), the second driving electrode (the second driving electrode D2), the sixth driving electrode (the sixth driving electrode D6), the first driving electrode (the first driving electrode D1), the seventh driving electrode (the seventh driving electrode D7), the twelfth driving electrode (the twelfth driving electrode D12), the eighth driving electrode (the eighth driving electrode D8), the eleventh driving electrode (the eleventh driving electrode D11), the ninth driving electrode (the ninth driving electrode D9), and the tenth driving electrode (the tenth driving electrode D10). The time sequence of writing data signals by the N=12 driving electrodes is: the fourth driving electrode (the fourth driving electrode D4), the third driving electrode (the third driving electrode D3), the fifth driving electrode (the fifth driving electrode D5), the second driving electrode (the second driving electrode D2), the sixth driving electrode (the sixth driving electrode D6), the first driving electrode (the first driving electrode D1), the seventh driving electrode (the seventh driving electrode D7), the twelfth driving electrode (the twelfth driving electrode D12), the eighth driving electrode (the eighth driving electrode D8), the eleventh driving electrode (the eleventh driving electrode D11), the ninth driving electrode (the ninth driving electrode D9), and the tenth driving electrode (the tenth driving electrode D10). The data writing sequence of the driving electrodes 510 in the first electrode subgroup 521 is from the center to the edge, and alternately from the tail to the head, and the data writing time of the first driving electrode is the last data writing time period in the first subgroup writing time period (the last data writing time period in the first subgroup writing time period, i.e., the sixth data writing time period t6). The data writing sequence of the driving electrodes 510 in the second electrode subgroup 522 is from the edge to the center, and alternately from the tail to the head, and the data writing time of the Nth driving electrode is the first data writing time period in the second subgroup writing time period (the first data writing time period in the second subgroup writing time period, i.e., the seventh data writing time period t7). After sequentially writing the data signals in each electrode subgroup, the data writing time of the first driving electrode and the last driving electrode in the same electrode group 50 is close (differing by two data writing time periods), which reduces the time length of the positive and negative voltage difference between the two driving electrodes closest to each other in the adjacent electrode groups 50 after the voltage polarity is changed, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0158] For example, FIG. 24 illustrates the case where N=12 and h=6, i.e., the time sequence of writing the data signals by the 12 driving electrodes is: the fourth driving electrode (fourth driving electrode D4), the third driving electrode (third driving electrode D3), the fifth driving electrode (fifth driving electrode D5), the second driving electrode (second driving electrode D2), the sixth driving electrode (sixth driving electrode D6), the first driving electrode (first driving electrode D1), the twelfth driving electrode (twelfth driving electrode D12), the seventh driving electrode (seventh driving electrode D7), the eleventh driving electrode (eleventh driving electrode D11), the eighth driving electrode (eighth driving electrode D8), the tenth driving electrode (tenth driving electrode D10), and the ninth driving electrode (ninth driving electrode D9).

[0159] The above embodiments take the case where N is even and h is even as an example, and the following embodiments take the case where N is odd and h is even as an example, which will not be described herein again.

[0160] FIG. 25 is a data writing timing diagram of another driving electrode provided by an embodiment of the present application. As shown in the embodiment of FIG. 25, N is odd and h is even, and the time sequence of writing the data signals by the N driving electrodes 510 in the same electrode group 50 is: the first driving electrode, the second driving electrode, the third driving electrode, the fourth driving electrode, the fifth driving electrode, the sixth driving electrode, the seventh driving electrode, the eighth driving electrode, the ninth driving electrode, the tenth driving electrode, the eleventh driving electrode, and the twelfth driving electrode. ​​​The driving electrode, ..., the 1st driving electrode, the hth driving electrode, the (h+1)th driving electrode, the Nth driving electrode, the (h+2)th driving electrode, the (N-1)th driving electrode, ..., the... One driving electrode.

[0161] For example, Figure 25 illustrates the case with N=11 and h=6, where the time sequence of the 11 driving electrodes writing data signals is as follows: the 3rd driving electrode (D3), the 4th driving electrode (D4), the 2nd driving electrode (D2), the 5th driving electrode (D5), the 1st driving electrode (D1), the 6th driving electrode (D6), the 7th driving electrode (D7), the 11th driving electrode (D11), the 8th driving electrode (D8), the 10th driving electrode (D10), and the 9th driving electrode (D9).

[0162] Figure 26 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 26, when N is odd and h is even, the timing sequence of writing data signals to the N driving electrodes 510 in the same electrode group 50 is as follows: ... The driving electrode, the first The driving electrode, the first The driving electrode, the first The driving electrode, ..., the 1st driving electrode, the hth driving electrode, the Nth driving electrode, the (h+1)th driving electrode, the (N-1)th driving electrode, the (h+2)th driving electrode, ..., the... One driving electrode.

[0163] Figure 26 illustrates an example with N=11 and h=6, where the time sequence of the 11 driving electrodes writing data signals is as follows: the 3rd driving electrode (D3), the 4th driving electrode (D4), the 2nd driving electrode (D2), the 5th driving electrode (D5), the 1st driving electrode (D1), the 6th driving electrode (D6), the 11th driving electrode (D11), the 7th driving electrode (D7), the 10th driving electrode (D10), the 8th driving electrode (D8), and the 9th driving electrode (D9).

[0164] Figure 27 is a data write timing diagram of another driving electrode provided by an embodiment of the present application. As shown in the embodiment of Figure 27, N is odd, h is even, and the time sequence of the N driving electrodes 510 in the same electrode group 50 for writing data signals is as follows: the 4th driving electrode (the fourth driving electrode D4), the 3rd driving electrode (the third driving electrode D3), the 5th driving electrode (the fifth driving electrode D5), the 2nd driving electrode (the second driving electrode D2), the 6th driving electrode (the sixth driving electrode D6), the 1st driving electrode (the first driving electrode D1), the 7th driving electrode (the seventh driving electrode D7), the 11th driving electrode (the eleventh driving electrode D11), the 8th driving electrode (the eighth driving electrode D8), the 10th driving electrode (the tenth driving electrode D10), and the 9th driving electrode (the ninth driving electrode D9). the 4th driving electrode, the 3rd driving electrode, the 5th driving electrode, the 2nd driving electrode, the 6th driving electrode, the 1st driving electrode, the 7th driving electrode, the 11th driving electrode, the 8th driving electrode, the 10th driving electrode, and the 9th driving electrode. the 4th driving electrode, the 3rd driving electrode, the 5th driving electrode, the 2nd driving electrode, the 6th driving electrode, the 1st driving electrode, the 7th driving electrode, the 11th driving electrode, the 8th driving electrode, the 10th driving electrode, and the 9th driving electrode. the 4th driving electrode, the 3rd driving electrode, the 5th driving electrode, the 2nd driving electrode, the 6th driving electrode, the 1st driving electrode, the 7th driving electrode, the 11th driving electrode, the 8th driving electrode, the 10th driving electrode, and the 9th driving electrode. the 4th driving electrode, the 3rd driving electrode, the 5th driving electrode, the 2nd driving electrode, the 6th driving electrode, the 1st driving electrode, the 7th driving electrode, the 11th driving electrode, the 8th driving electrode, the 10th driving electrode, and the 9th driving electrode. the 4th driving electrode, the 3rd driving electrode, the 5th driving electrode, the 2nd driving electrode, the 6th driving electrode, the 1st driving electrode, the 7th driving electrode, the 11th driving electrode, the 8th driving electrode, the 10th driving electrode, and the 9th driving electrode.

[0165] Figure 27 exemplarily takes N = 11 and h = 6 as an example for illustration, i.e., the time sequence of the 11 driving electrodes for writing data signals is as follows: the 4th driving electrode (the fourth driving electrode D4), the 3rd driving electrode (the third driving electrode D3), the 5th driving electrode (the fifth driving electrode D5), the 2nd driving electrode (the second driving electrode D2), the 6th driving electrode (the sixth driving electrode D6), the 1st driving electrode (the first driving electrode D1), the 7th driving electrode (the seventh driving electrode D7), the 11th driving electrode (the eleventh driving electrode D11), the 8th driving electrode (the eighth driving electrode D8), the 10th driving electrode (the tenth driving electrode D10), and the 9th driving electrode (the ninth driving electrode D9).

[0166] Figure 28 is a data write timing diagram of another driving electrode provided by an embodiment of the present application. As shown in the embodiment of Figure 28, N is odd, h is even, and the time sequence of the N driving electrodes 510 in the same electrode group 50 for writing data signals is as follows: the 4th driving electrode (the fourth driving electrode D4), the 3rd driving electrode (the third driving electrode D3), the 5th driving electrode (the fifth driving electrode D5), the 2nd driving electrode (the second driving electrode D2), the 6th driving electrode (the sixth driving electrode D6), the 1st driving electrode (the first driving electrode D1), the 7th driving electrode (the seventh driving electrode D7), the 11th driving electrode (the eleventh driving electrode D11), the 8th driving electrode (the eighth driving electrode D8), the 10th driving electrode (the tenth driving electrode D10), and the 9th driving electrode (the ninth driving electrode D9). the 4th driving electrode, the 3rd driving electrode, the 5th driving electrode, the 2nd driving electrode, the 6th driving electrode, the 1st driving electrode, the 7th driving electrode, the 11th driving electrode, the 8th driving electrode, the 10th driving electrode, and the 9th driving electrode. the 4th driving electrode, the 3rd driving electrode, the 5th driving electrode, the 2nd driving electrode, the 6th driving electrode, the 1st driving electrode, the 7th driving electrode, the 11th driving electrode, the 8th driving electrode, the 10th driving electrode, and the 9th driving electrode. the 4th driving electrode, the 3rd driving electrode, the 5th driving electrode, the 2nd driving electrode, the 6th driving electrode, the 1st driving electrode, the 7th driving electrode, the 11th driving electrode, the 8th driving electrode, the 10th driving electrode, and the 9th driving electrode. the 4th driving electrode, the 3rd driving electrode, the 5th driving electrode, the 2nd driving electrode, the 6th driving electrode, the 1st driving electrode, the 7th driving electrode, the 11th driving electrode, the 8th driving electrode, the 10th driving electrode, and the 9th driving electrode. the 4th driving electrode, the 3rd driving electrode, the 5th driving electrode, the 2nd driving electrode, the 6th driving electrode, the 1st driving electrode, the 7th driving electrode, the 11th driving electrode, the 8th driving electrode, the 10th driving electrode, and the 9th driving electrode.

[0167] Figure 28 illustrates an example with N=11 and h=6, where the time sequence of the 11 driving electrodes writing data signals is as follows: the 4th driving electrode (D4), the 3rd driving electrode (D3), the 5th driving electrode (D5), the 2nd driving electrode (D2), the 6th driving electrode (D6), the 1st driving electrode (D1), the 11th driving electrode (D11), the 7th driving electrode (D7), the 10th driving electrode (D10), the 8th driving electrode (D8), and the 9th driving electrode (D9).

[0168] The above embodiments are illustrated with N being odd and h being even. The following embodiments are illustrated with h being odd and N being even. The embodiments of this application will not be described in detail here.

[0169] Figure 29 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 29, h is an odd number and N is an even number. In the same electrode group 50, the time order of writing data signals by N driving electrodes 510 is as follows: The driving electrode, the first The driving electrode, the first The driving electrode, the first The driving electrode, ..., the h-th driving electrode, the 1st driving electrode, the (h+1)th driving electrode, the Nth driving electrode, the (h+2)th driving electrode, the (N-1)th driving electrode, ..., the... One driving electrode.

[0170] For example, Figure 29 illustrates the case with N=12 and h=7, where the time sequence of the 12 driving electrodes writing data signals is as follows: the 4th driving electrode (D4), the 5th driving electrode (D5), the 3rd driving electrode (D3), the 6th driving electrode (D6), the 2nd driving electrode (D2), the 7th driving electrode (D7), the 1st driving electrode (D1), the 8th driving electrode (D8), the 12th driving electrode (D12), the 9th driving electrode (D9), the 11th driving electrode (D11), and the 10th driving electrode (D10).

[0171] Figure 30 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 30, h is an odd number and N is an even number. In the same electrode group 50, the time order of writing data signals by N driving electrodes 510 is as follows: The driving electrode, the first The driving electrode, the first The driving electrode, the first The driving electrode, ..., the h-th driving electrode, the 1st driving electrode, the Nth driving electrode, the (h+1)th driving electrode, the (N-1)th driving electrode, the (h+2)th driving electrode, ..., the... One driving electrode.

[0172] Figure 30 illustrates an example with N=12 and h=7, where the time sequence of the 12 driving electrodes writing data signals is as follows: the 4th driving electrode (D4), the 5th driving electrode (D5), the 3rd driving electrode (D3), the 6th driving electrode (D6), the 2nd driving electrode (D2), the 7th driving electrode (D7), the 1st driving electrode (D1), the 12th driving electrode (D12), the 8th driving electrode (D8), the 11th driving electrode (D11), the 9th driving electrode (D9), and the 10th driving electrode (D10).

[0173] Figure 31 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 30, h is an odd number and N is an even number. In the same electrode group 50, the time order of writing data signals by N driving electrodes 510 is as follows: The driving electrode, the first The driving electrode, the first The driving electrode, the first The driving electrode, ..., the 1st driving electrode, the hth driving electrode, the (h+1)th driving electrode, the Nth driving electrode, the (h+2)th driving electrode, the (N-1)th driving electrode, ..., the... One driving electrode.

[0174] FIG. 31 illustrates an example with N=12 and h=7, i.e., the time sequence of the data signals written by the 12 driving electrodes is: the 4th driving electrode (the fourth driving electrode D4), the 3rd driving electrode (the third driving electrode D3), the 5th driving electrode (the fifth driving electrode D5), the 2nd driving electrode (the second driving electrode D2), the 6th driving electrode (the sixth driving electrode D6), the 1st driving electrode (the first driving electrode D1), the 7th driving electrode (the seventh driving electrode D7), the 8th driving electrode (the eighth driving electrode D8), the 12th driving electrode (the twelfth driving electrode D12), the 9th driving electrode (the ninth driving electrode D9), the 11th driving electrode (the eleventh driving electrode D11), and the 10th driving electrode (the tenth driving electrode D10).

[0175] FIG. 32 is a data writing timing diagram of another driving electrode provided by an embodiment of the present application. As shown in the embodiment of FIG. 32, h is an odd number and N is an even number. In the same electrode group 50, the time sequence of the data signals written by the N driving electrodes 510 is: the 1st driving electrode, the 2nd driving electrode, the 3rd driving electrode, the 4th driving electrode, the 5th driving electrode, the 6th driving electrode, the 7th driving electrode, the 8th driving electrode, the 9th driving electrode, the 10th driving electrode, the 11th driving electrode, the 12th driving electrode, the 13th driving electrode, the 14th driving electrode, the 15th driving electrode, the 16th driving electrode, the 17th driving electrode, the 18th driving electrode, the 19th driving electrode, the 20th driving electrode, the 21st driving electrode, the 22nd driving electrode, the 23rd driving electrode, the 24th driving electrode, the 25th driving electrode, the 26th driving electrode, the 27th driving electrode, the 28th driving electrode, the 29th driving electrode, the 30th driving electrode, the 31st driving electrode, the 32nd driving electrode, the 33rd driving electrode, the 34th driving electrode, the 35th driving electrode, the 36th driving electrode, the 37th driving electrode, the 38th driving electrode, the 39th driving electrode, the 40th driving electrode, the 41st driving electrode, the 42nd driving electrode, the 43rd driving electrode, the 44th driving electrode, the 45th driving electrode, the 46th driving electrode, the 47th driving electrode, the 48th driving electrode, the 49th driving electrode, the 50th driving electrode, the 51st driving electrode, the 52nd driving electrode, the 53rd driving electrode, the 54th driving electrode, the 55th driving electrode, the 56th driving electrode, the 57th driving electrode, the 58th driving electrode, the 59th driving electrode, the 60th driving electrode, the 61st driving electrode, the 62nd driving electrode, the 63rd driving electrode, the 64th driving electrode, the 65th driving electrode, the 66th driving electrode, the 67th driving electrode, the 68th driving electrode, the 69th driving electrode, the 70th driving electrode, the 71st driving electrode, the 72nd driving electrode, the 73rd driving electrode, the 74th driving electrode, the 75th driving electrode, the 76th driving electrode, the 77th driving electrode, the 78th driving electrode, the 79th driving electrode, the 80th driving electrode, the 81st driving electrode, the 82nd driving electrode, the 83rd driving electrode, the 84th driving electrode, the 85th driving electrode, the 86th driving electrode, the 87th driving electrode, the 88th driving electrode, the 89th driving electrode, the 90th driving electrode, the 91st driving electrode, the 92nd driving electrode, the 93rd driving electrode, the 94th driving electrode, the 95th driving electrode, the 96th driving electrode, the 97th driving electrode, the 98th driving electrode, the 99th driving electrode, and the 100th driving electrode.

[0176] FIG. 32 illustrates an example with N=12 and h=7, i.e., the time sequence of the data signals written by the 12 driving electrodes is: the 4th driving electrode (the fourth driving electrode D4), the 3rd driving electrode (the third driving electrode D3), the 5th driving electrode (the fifth driving electrode D5), the 2nd driving electrode (the second driving electrode D2), the 6th driving electrode (the sixth driving electrode D6), the 1st driving electrode (the first driving electrode D1), the 7th driving electrode (the seventh driving electrode D7), the 12th driving electrode (the twelfth driving electrode D12), the 8th driving electrode (the eighth driving electrode D8), the 11th driving electrode (the eleventh driving electrode D11), the 9th driving electrode (the ninth driving electrode D9), and the 10th driving electrode (the tenth driving electrode D10).

[0177] The above embodiments take h as an odd number and N as an even number as an example for illustration. The following embodiments take h as an odd number and N as an odd number as an example for illustration. The embodiments of the present application will not be repeated here.

[0178] ​​​​​Figure 33 is a data write timing diagram of another driving electrode provided by the embodiments of the present application. In the embodiment shown in Figure 33, h is an odd number, N is an odd number, and the time sequence of the N driving electrodes 510 in the same electrode group 50 for writing data signals is: the hth driving electrode, the 1st driving electrode, the (N-1)th driving electrode, the (h+1)th driving electrode, the 2nd driving electrode, the (N-2)th driving electrode, the (h+2)th driving electrode, the 3rd driving electrode, the (N-3)th driving electrode, the (h+3)th driving electrode, the 4th driving electrode, the (N-4)th driving electrode, the (h+4)th driving electrode, the 5th driving electrode, the (N-5)th driving electrode, the (h+5)th driving electrode, the 6th driving electrode, the (N-6)th driving electrode, the (h+6)th driving electrode, the 7th driving electrode, the (N-7)th driving electrode, the (h+7)th driving electrode, the 8th driving electrode, the (N-8)th driving electrode, the (h+8)th driving electrode, the 9th driving electrode, the (N-9)th driving electrode, the (h+9)th driving electrode, the 10th driving electrode, and the (N-10)th driving electrode.

[0179] Figure 33 illustrates an example with N=11 and h=7, i.e., the time sequence of the 11 driving electrodes for writing data signals is: the 4th driving electrode (the fourth driving electrode D4), the 5th driving electrode (the fifth driving electrode D5), the 3rd driving electrode (the third driving electrode D3), the 6th driving electrode (the sixth driving electrode D6), the 2nd driving electrode (the second driving electrode D2), the 7th driving electrode (the seventh driving electrode D7), the 1st driving electrode (the first driving electrode D1), the 8th driving electrode (the eighth driving electrode D8), the 11th driving electrode (the eleventh driving electrode D11), the 9th driving electrode (the ninth driving electrode D9), and the 10th driving electrode (the tenth driving electrode D10).

[0180] Figure 34 is a data write timing diagram of another driving electrode provided by the embodiments of the present application. In the embodiment shown in Figure 34, h is an odd number, N is an odd number, and the time sequence of the N driving electrodes 510 in the same electrode group 50 for writing data signals is: the hth driving electrode, the 1st driving electrode, the (N-1)th driving electrode, the (h+1)th driving electrode, the 2nd driving electrode, the (N-2)th driving electrode, the (h+2)th driving electrode, the 3rd driving electrode, the (N-3)th driving electrode, the (h+3)th driving electrode, the 4th driving electrode, the (N-4)th driving electrode, the (h+4)th driving electrode, the 5th driving electrode, the (N-5)th driving electrode, the (h+5)th driving electrode, the 6th driving electrode, the (N-6)th driving electrode, the (h+6)th driving electrode, the 7th driving electrode, the (N-7)th driving electrode, the (h+7)th driving electrode, the 8th driving electrode, the (N-8)th driving electrode, the (h+8)th driving electrode, the 9th driving electrode, the (N-9)th driving electrode, the (h+9)th driving electrode, the 10th driving electrode, and the (N-10)th driving electrode.

[0181] ​​​​​​​​​​​​Figure 34 illustrates an example with N=11 and h=7, where the time sequence of the 11 driving electrodes writing data signals is as follows: the 4th driving electrode (D4), the 5th driving electrode (D5), the 3rd driving electrode (D3), the 6th driving electrode (D6), the 2nd driving electrode (D2), the 7th driving electrode (D7), the 1st driving electrode (D1), the 11th driving electrode (D11), the 8th driving electrode (D8), the 10th driving electrode (D10), and the 9th driving electrode (D9).

[0182] Figure 35 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 35, h is an odd number, N is an odd number, and the time order of writing data signals to the N driving electrodes 510 in the same electrode group 50 is as follows: The driving electrode, the first The driving electrode, the first The driving electrode, the first The driving electrode, ..., the 1st driving electrode, the hth driving electrode, the (h+1)th driving electrode, the Nth driving electrode, the (h+2)th driving electrode, the (N-1)th driving electrode, ..., the... The driving electrode, the first One driving electrode.

[0183] Figure 35 illustrates an example with N=11 and h=7, where the time sequence of the 11 driving electrodes writing data signals is as follows: 4th driving electrode (D4), 3rd driving electrode (D3), 5th driving electrode (D5), 2nd driving electrode (D2), 6th driving electrode (D6), 1st driving electrode (D1), 7th driving electrode (D7), 8th driving electrode (D8), 11th driving electrode (D11), 9th driving electrode (D9), and 10th driving electrode (D10).

[0184] Figure 36 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 36, h is an odd number, N is an odd number, and the time order of writing data signals to the N driving electrodes 510 in the same electrode group 50 is as follows: The driving electrode, the first The driving electrode, the first The driving electrode, the first the 1st drive electrode, the hth drive electrode, the Nth drive electrode, the (h+1)th drive electrode, the (N-1)th drive electrode, the (h+2)th drive electrode, …, the (N+1)th drive electrode. the 1st drive electrode, the hth drive electrode, the Nth drive electrode, the (h+1)th drive electrode, the (N-1)th drive electrode, the (h+2)th drive electrode, …, the (N+1)th drive electrode. the 1st drive electrode, the hth drive electrode, the Nth drive electrode, the (h+1)th drive electrode, the (N-1)th drive electrode, the (h+2)th drive electrode, …, the (N+1)th drive electrode.

[0185] FIG. 36 illustrates an example of N=11 and h=7, i.e., the time sequence of the 11 drive electrodes for writing data signals is: the 4th drive electrode (the fourth drive electrode D4), the 3rd drive electrode (the third drive electrode D3), the 5th drive electrode (the fifth drive electrode D5), the 2nd drive electrode (the second drive electrode D2), the 6th drive electrode (the sixth drive electrode D6), the 1st drive electrode (the first drive electrode D1), the 7th drive electrode (the seventh drive electrode D7), the 11th drive electrode (the eleventh drive electrode D11), the 8th drive electrode (the eighth drive electrode D8), the 10th drive electrode (the tenth drive electrode D10), and the 9th drive electrode (the ninth drive electrode D9).

[0186] FIG. 37 is a data writing timing diagram of another drive electrode provided by an embodiment of the present application. Referring to FIG. 37, the plurality of electrode subgroups 520 include a 1st electrode subgroup 521 and a 2nd electrode subgroup 522, the drive electrodes 510 in the 1st electrode subgroup 521 are written with data signals in a u-th subgroup writing period, the drive electrodes 510 in the 2nd electrode subgroup 522 are written with data signals in a v-th subgroup writing period, and v>u, u and v are positive integers. The 1st electrode subgroup 521 and the 2nd electrode subgroup 522 are the first type of subgroup 50A. In the same first type of subgroup 50A, the drive electrodes 510 are written with data signals from the edge of the first type of subgroup 50A to the center of the first type of subgroup 50A, and the head and tail are alternately arranged.

[0187] As shown in the embodiment of FIG. 37, for example, M = 2, and the two electrode subgroups 520 are a first electrode subgroup 521 and a second electrode subgroup 522. The first electrode subgroup 521 includes the first driving electrode to the hth driving electrode. The second electrode subgroup 522 includes the (h+1)th driving electrode to the Nth driving electrode, h is a positive integer greater than 1. The two subgroup write periods are a first subgroup write period and a second subgroup write period. The first subgroup write period includes the first data write period t1 to the hth data write period, and the second subgroup write period includes the (h+1)th data write period to the Nth data write period. When the first subgroup write period is used to write data signals to the driving electrodes 510 in the first electrode subgroup 521, the second subgroup write period is used to write data signals to the driving electrodes in the second electrode subgroup 522, and h is an even number and N is an even number, since the first electrode subgroup 521 and the second electrode subgroup 522 are both the first type of subgroup 50A, the time sequence of writing data signals to the N driving electrodes 510 in the same electrode group 50 is: the first driving electrode, the hth driving electrode, the second driving electrode, the (h-1)th driving electrode, …, the (N-1)th driving electrode, the (h+1)th driving electrode, the Nth driving electrode, the (h+2)th driving electrode, the (N-1)th driving electrode, …, the (N-h)th driving electrode, the (h+1)th driving electrode. In this way, the driving electrodes 510 in the first electrode subgroup 521 and the second electrode subgroup 522 are both written with data signals from the edge to the center, and the data signals are written in the first-to-last alternating sequence, so the data write time of the first driving electrode is the first data write period in the first subgroup write period (the first data write period t1 in the first subgroup write period). The data write time of the Nth driving electrode is close to the first data write period in the second subgroup write period (the second data write period in the second subgroup write period), and after sequentially writing data signals in each electrode subgroup, the data write times of the first driving electrode and the last driving electrode in the same electrode group 50 are close to each other (differ by 7 data write periods, which is less than N-1 = 11 data write periods), and the data write times of the Nth driving electrode in the first electrode group 501 and the first driving electrode in the second electrode group 502 are close to each other in adjacent electrode groups 50, thereby reducing the length of time during which the two driving electrodes closest to each other between adjacent electrode groups 50 have a positive-negative voltage difference after the voltage polarity is changed. In addition, the number of data write periods during which there is a voltage difference between adjacent driving electrodes 510 in the first electrode subgroup 521 and the second electrode subgroup 522 is 1 or 2, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0188] ​​​​The example in FIG. 37 is explained with N=12 and h=6, i.e. the time sequence of the data signals written by the 12 driving electrodes is: the 1st driving electrode (the first driving electrode D1), the 6th driving electrode (the sixth driving electrode D6), the 2nd driving electrode (the second driving electrode D2), the 5th driving electrode (the fifth driving electrode D5), the 3rd driving electrode (the third driving electrode D3), the 4th driving electrode (the fourth driving electrode D4), the 7th driving electrode (the seventh driving electrode D7), the 12th driving electrode (the twelfth driving electrode D12), the 8th driving electrode (the eighth driving electrode D8), the 11th driving electrode (the eleventh driving electrode D11), the 9th driving electrode (the ninth driving electrode D9), and the 10th driving electrode (the tenth driving electrode D10).

[0189] In yet another embodiment, FIG. 38 is another data writing time sequence diagram of the driving electrodes provided by the embodiments of the present application. As shown in the embodiment of FIG. 38, when h is an even number and N is an even number, the time sequence of the data signals written by the N driving electrodes 510 in the same electrode group 50 is: the 1st driving electrode, the hth driving electrode, the 2nd driving electrode, the (h-1)th driving electrode, …, the (N-h+1)th driving electrode, the (N-1)th driving electrode, the h+1th driving electrode, the (N-h)th driving electrode, the (h+2)th driving electrode, …, the (N-h+2)th driving electrode, the (N-h+1)th driving electrode, and the Nth driving electrode. In this way, the data writing sequence of the driving electrodes 510 in the 1st electrode subgroup 521 is from the edge to the center and alternately from the head to the tail, so the data writing time of the 1st driving electrode is the first data writing time period (the 1st data writing time period t1) in the 1st subgroup writing time period. The data writing sequence of the driving electrodes 510 in the 2nd electrode subgroup 522 is from the edge to the center and alternately from the tail to the head, so the data writing time of the Nth driving electrode is the first data writing time period (the 7th data writing time period t7) in the 2nd subgroup writing time period. After the data signals are written in the electrode subgroups one by one, the data writing times of the first driving electrode and the last driving electrode in the same electrode group 50 are close (differ by 6 data writing time periods), which reduces the length of time during which the two driving electrodes closest to each other between the adjacent electrode groups 50 have a positive-negative voltage difference after the voltage polarity is changed, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0190] ​​​The time sequence of writing data signals of the 12 driving electrodes is as follows: the 1st driving electrode (the first driving electrode D1), the 6th driving electrode (the sixth driving electrode D6), the 2nd driving electrode (the second driving electrode D2), the 5th driving electrode (the fifth driving electrode D5), the 3rd driving electrode (the third driving electrode D3), the 4th driving electrode (the fourth driving electrode D4), the 12th driving electrode (the twelfth driving electrode D12), the 7th driving electrode (the seventh driving electrode D7), the 11th driving electrode (the eleventh driving electrode D11), the 8th driving electrode (the eighth driving electrode D8), the 10th driving electrode (the tenth driving electrode D10), and the 9th driving electrode (the ninth driving electrode D9).

[0191] FIG. 39 is a data writing time sequence diagram of another driving electrode provided in the embodiments of the present application. As shown in the embodiment of FIG. 39, when h is an even number and N is an even number, the time sequence of writing data signals of the N driving electrodes 510 in the same electrode group 50 is as follows: the hth driving electrode, the 1st driving electrode, the (h-1)th driving electrode, the 2nd driving electrode, …, the (N-h)th driving electrode, the (N-h+1)th driving electrode, the (h+1)th driving electrode, the Nth driving electrode, the (h+2)th driving electrode, the (N-1)th driving electrode, …, the (N-h+1)th driving electrode, and the (N-h+2)th driving electrode. In this way, the data writing sequence of the driving electrodes 510 in the 1st electrode subgroup 521 is from the edge to the center and alternately from the tail to the head, so the data writing time of the 1st driving electrode is close to the first data writing time period (the 2nd data writing time period t2 in the 1st subgroup writing time period) in the 1st subgroup writing time period. The data writing sequence of the driving electrodes 510 in the 2nd electrode subgroup 522 is from the edge to the center and alternately from the head to the tail, so the data writing time period of the Nth driving electrode is close to the first data writing time period (the 8th data writing time period t8 in the 2nd subgroup writing time period) in the 2nd subgroup writing time period. After sequentially writing data signals in each electrode subgroup, the data writing time of the first driving electrode is close to that of the last driving electrode (with a difference of 6 data writing time periods) in the same electrode group 50, so the time length of the positive and negative voltage difference between the two driving electrodes closest to each other in the adjacent electrode groups 50 after the voltage polarity is changed is reduced, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0192] ​​​The time sequence of writing data signals of the 12 driving electrodes is: the 6th driving electrode (the sixth driving electrode D6), the 1st driving electrode (the first driving electrode D1), the 5th driving electrode (the fifth driving electrode D5), the 2nd driving electrode (the second driving electrode D2), the 4th driving electrode (the fourth driving electrode D4), the 3rd driving electrode (the third driving electrode D3), the 7th driving electrode (the seventh driving electrode D7), the 12th driving electrode (the twelfth driving electrode D12), the 8th driving electrode (the eighth driving electrode D8), the 11th driving electrode (the eleventh driving electrode D11), the 9th driving electrode (the ninth driving electrode D9), and the 10th driving electrode (the tenth driving electrode D10).

[0193] FIG. 40 is a data writing time sequence diagram of another driving electrode provided by the embodiment of the application. As shown in the embodiment of FIG. 40, when h is even and N is even, the time sequence of writing data signals of the N driving electrodes 510 in the same electrode group 50 is: the hth driving electrode, the 1st driving electrode, the (h-1)th driving electrode, the 2nd driving electrode, …, the (N-h)th driving electrode, the (N-h+1)th driving electrode, the (N-1)th driving electrode, the (h+1)th driving electrode, the (N-h+2)th driving electrode, …, the (N-2)th driving electrode, the (h+2)th driving electrode, the (N-1)th driving electrode, the (h+3)th driving electrode, the (N-3)th driving electrode, …, the (N-4)th driving electrode, the (h+4)th driving electrode, the (N-4)th driving electrode, the (h+5)th driving electrode, and the Nth driving electrode. In this way, the data writing sequence of the driving electrodes 510 in the 1st electrode subgroup 521 is from the edge to the center and alternately from the tail to the head, so the data writing time of the 1st driving electrode is close to the first data writing time period (the 2nd data writing time period t2 in the 1st subgroup writing time period) in the 1st subgroup writing time period. The data writing sequence of the driving electrodes 510 in the 2nd electrode subgroup 522 is from the edge to the center and alternately from the tail to the head, so the data writing time of the Nth driving electrode is the first data writing time period (the 7th data writing time period t7 in the 2nd subgroup writing time period) in the 2nd subgroup writing time period. After sequentially writing data signals in each electrode subgroup, the data writing time of the first driving electrode and the last driving electrode in the same electrode group 50 is close (5 data writing time periods apart), which reduces the time length of the positive and negative voltage difference between the two driving electrodes closest to each other in the adjacent electrode groups 50 after the voltage polarity is changed, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0194] ​​​The example in FIG. 40 is explained with N=12 and h=6, i.e., the time sequence of the data signals written by the 12 driving electrodes is: the 6th driving electrode (sixth driving electrode D6), the 1st driving electrode (first driving electrode D1), the 5th driving electrode (fifth driving electrode D5), the 2nd driving electrode (second driving electrode D2), the 4th driving electrode (fourth driving electrode D4), the 3rd driving electrode (third driving electrode D3), the 12th driving electrode (twelfth driving electrode D12), the 7th driving electrode (seventh driving electrode D7), the 11th driving electrode (eleventh driving electrode D11), the 8th driving electrode (eighth driving electrode D8), the 10th driving electrode (tenth driving electrode D10), and the 9th driving electrode (ninth driving electrode D9).

[0195] The above embodiment is explained with N being even and h being even. The following embodiment is explained with N being odd and h being even. The embodiments of the present application will not be repeated here.

[0196] FIG. 41 is a data writing timing diagram of another driving electrode provided by an embodiment of the present application. As shown in the embodiment of FIG. 41, N is odd and h is even. In the same electrode group 50, the time sequence of the data signals written by the N driving electrodes 510 is: the 1st driving electrode, the hth driving electrode, the 2nd driving electrode, the (h-1)th driving electrode,..., the (N-h+1)th driving electrode, the (h+1)th driving electrode, the Nth driving electrode, the (h+2)th driving electrode, the (N-1)th driving electrode,..., and the (N-h)th driving electrode.

[0197] The example in FIG. 41 is explained with N=11 and h=6, i.e., the time sequence of the data signals written by the 11 driving electrodes is: the 1st driving electrode (first driving electrode D1), the 6th driving electrode (sixth driving electrode D6), the 2nd driving electrode (second driving electrode D2), the 5th driving electrode (fifth driving electrode D5), the 3rd driving electrode (third driving electrode D3), the 4th driving electrode (fourth driving electrode D4), the 7th driving electrode (seventh driving electrode D7), the 11th driving electrode (eleventh driving electrode D11), the 8th driving electrode (eighth driving electrode D8), the 10th driving electrode (tenth driving electrode D10), and the 9th driving electrode (ninth driving electrode D9).

[0198] ​​​Figure 42 is a data write timing diagram of another driving electrode provided by the embodiment of the present application. As shown in the embodiment of Figure 42, when N is odd and h is even, the time sequence of the N driving electrodes 510 in the same electrode group 50 for writing data signals is: the 1st driving electrode, the hth driving electrode, the 2nd driving electrode, the h-1th driving electrode,..., the (N-1)th driving electrode, the Nth driving electrode, the (h+1)th driving electrode, the (N-1)th driving electrode, the (h+2)th driving electrode,..., the (N-1)th driving electrode.

[0199] Figure 42 illustrates the case of N=11 and h=6, i.e., the time sequence of the 11 driving electrodes for writing data signals is: the 1st driving electrode (the first driving electrode D1), the 6th driving electrode (the sixth driving electrode D6), the 2nd driving electrode (the second driving electrode D2), the 5th driving electrode (the fifth driving electrode D5), the 3rd driving electrode (the third driving electrode D3), the 4th driving electrode (the fourth driving electrode D4), the 11th driving electrode (the eleventh driving electrode D11), the 7th driving electrode (the seventh driving electrode D7), the 10th driving electrode (the tenth driving electrode D10), the 8th driving electrode (the eighth driving electrode D8), and the 9th driving electrode (the ninth driving electrode D9).

[0200] Figure 43 is a data write timing diagram of another driving electrode provided by the embodiment of the present application. As shown in the embodiment of Figure 43, when N is odd and h is even, the time sequence of the N driving electrodes 510 in the same electrode group 50 for writing data signals is: the hth driving electrode, the 1st driving electrode, the h-1th driving electrode, the 2nd driving electrode,..., the (N-1)th driving electrode, the Nth driving electrode, the (h+1)th driving electrode, the (N-1)th driving electrode, the (h+2)th driving electrode,..., the (N-1)th driving electrode.

[0201] ​​​​​​The example of N=11 and h=6 is shown in FIG. 43, i.e., the time sequence of the data signals written by the 11 driving electrodes is: the 6th driving electrode (the sixth driving electrode D6), the 1st driving electrode (the first driving electrode D1), the 5th driving electrode (the fifth driving electrode D5), the 2nd driving electrode (the second driving electrode D2), the 4th driving electrode (the fourth driving electrode D4), the 3rd driving electrode (the third driving electrode D3), the 7th driving electrode (the seventh driving electrode D7), the 11th driving electrode (the eleventh driving electrode D11), the 8th driving electrode (the eighth driving electrode D8), the 10th driving electrode (the tenth driving electrode D10), and the 9th driving electrode (the ninth driving electrode D9).

[0202] FIG. 44 is a data writing timing diagram of another driving electrode provided by an embodiment of the present application. As shown in the embodiment of FIG. 44, N is an odd number and h is an even number, and the time sequence of the data signals written by the N driving electrodes in the same electrode group 50 is: the hth driving electrode, the 1st driving electrode, the (h-1)th driving electrode, the 2nd driving electrode,..., the (N-h)th driving electrode, the (N-h+1)th driving electrode, the (N-h+2)th driving electrode,..., the (N-1)th driving electrode, and the Nth driving electrode.

[0203] The example of N=11 and h=6 is shown in FIG. 43, i.e., the time sequence of the data signals written by the 11 driving electrodes is: the 6th driving electrode (the sixth driving electrode D6), the 1st driving electrode (the first driving electrode D1), the 5th driving electrode (the fifth driving electrode D5), the 2nd driving electrode (the second driving electrode D2), the 4th driving electrode (the fourth driving electrode D4), the 3rd driving electrode (the third driving electrode D3), the 11th driving electrode (the eleventh driving electrode D11), the 7th driving electrode (the seventh driving electrode D7), the 10th driving electrode (the tenth driving electrode D10), the 8th driving electrode (the eighth driving electrode D8), and the 9th driving electrode (the ninth driving electrode D9).

[0204] The above embodiments take the example of N being an odd number and h being an even number, and the following embodiments take the example of h being an odd number and N being an even number, which will not be described herein again by the embodiments of the present application.

[0205] ​​​Figure 45 is a data write timing diagram of another driving electrode provided by the embodiment of the present application. As shown in the embodiment of Figure 45, h is an odd number, N is an even number, and in the same electrode group 50, the time sequence of the N driving electrodes 510 writing data signals is: the first driving electrode, the hth driving electrode, the second driving electrode, the (h-1)th driving electrode,..., the (N-h+1)th driving electrode, the Nth driving electrode, the (h+1)th driving electrode, the (N-1)th driving electrode,..., the (N+h-1)th driving electrode.

[0206] In Figure 45, the example of N=12 and h=7 is explained, that is, the time sequence of the 12 driving electrodes writing data signals is: the first driving electrode (the first driving electrode D1), the seventh driving electrode (the seventh driving electrode D7), the second driving electrode (the second driving electrode D2), the sixth driving electrode (the sixth driving electrode D6), the third driving electrode (the third driving electrode D3), the fifth driving electrode (the fifth driving electrode D5), the fourth driving electrode (the fourth driving electrode D4), the eighth driving electrode (the eighth driving electrode D8), the twelfth driving electrode (the twelfth driving electrode D12), the ninth driving electrode (the ninth driving electrode D9), the eleventh driving electrode (the eleventh driving electrode D11), and the tenth driving electrode (the tenth driving electrode D10).

[0207] Figure 46 is a data write timing diagram of another driving electrode provided by the embodiment of the present application. As shown in the embodiment of Figure 46, h is an odd number, N is an even number, and in the same electrode group 50, the time sequence of the N driving electrodes 510 writing data signals is: the first driving electrode, the hth driving electrode, the second driving electrode, the (h-1)th driving electrode,..., the (N-h+1)th driving electrode, the Nth driving electrode, the (h+1)th driving electrode, the (N-1)th driving electrode,..., the (N+h-1)th driving electrode.

[0208] ​​​​Figure 46 illustrates an example with N=12 and h=7, where the time sequence of the 12 driving electrodes writing data signals is as follows: the 1st driving electrode (first driving electrode D1), the 7th driving electrode (seventh driving electrode D7), the 2nd driving electrode (second driving electrode D2), the 6th driving electrode (sixth driving electrode D6), the 3rd driving electrode (third driving electrode D3), the 5th driving electrode (fifth driving electrode D5), the 4th driving electrode (fourth driving electrode D4), the 12th driving electrode (twelfth driving electrode D12), the 8th driving electrode (eighth driving electrode D8), the 11th driving electrode (eleventh driving electrode D11), and the 10th driving electrode (tenth driving electrode D10).

[0209] Figure 47 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 47, h is an odd number and N is an even number. In the same electrode group 50, the time order for writing data signals to the N driving electrodes 510 is: the h-th driving electrode, the 1st driving electrode, the (h-1)-th driving electrode, the 2nd driving electrode, ..., the... The driving electrode, the (h+1)th driving electrode, the Nth driving electrode, the (h+2)th driving electrode, the (N-1)th driving electrode, ..., the... One driving electrode.

[0210] Figure 47 illustrates an example with N=12 and h=7, where the time sequence of the 12 driving electrodes writing data signals is as follows: the 7th driving electrode (seventh driving electrode D7), the 1st driving electrode (first driving electrode D1), the 6th driving electrode (sixth driving electrode D6), the 2nd driving electrode (second driving electrode D2), the 5th driving electrode (fifth driving electrode D5), the 3rd driving electrode (third driving electrode D3), the 4th driving electrode (fourth driving electrode D4), the 8th driving electrode (eighth driving electrode D8), the 12th driving electrode (twelfth driving electrode D12), the 9th driving electrode (ninth driving electrode D9), the 11th driving electrode (eleventh driving electrode D11), and the 10th driving electrode (tenth driving electrode D10).

[0211] Figure 48 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 48, h is an odd number and N is an even number. In the same electrode group 50, the time order for writing data signals to the N driving electrodes 510 is: the h-th driving electrode, the 1st driving electrode, the (h-1)-th driving electrode, the 2nd driving electrode, ..., the... The driving electrode, the Nth driving electrode, the (h+1)th driving electrode, the (N-1)th driving electrode, the (h+2)th driving electrode, ..., the... a driving electrode.

[0212] The time sequence of the data signals written by the 12 driving electrodes is as follows: the 7th driving electrode (the seventh driving electrode D7), the 1st driving electrode (the first driving electrode D1), the 6th driving electrode (the sixth driving electrode D6), the 2nd driving electrode (the second driving electrode D2), the 5th driving electrode (the fifth driving electrode D5), the 3rd driving electrode (the third driving electrode D3), the 4th driving electrode (the fourth driving electrode D4), the 12th driving electrode (the twelfth driving electrode D12), the 8th driving electrode (the eighth driving electrode D8), the 11th driving electrode (the eleventh driving electrode D11), the 9th driving electrode (the ninth driving electrode D9), and the 10th driving electrode (the tenth driving electrode D10).

[0213] The above embodiment takes h as an odd number and N as an even number as an example for description, and the following embodiment takes h as an odd number and N as an odd number as an example for description, which will not be described here again.

[0214] FIG. 49 is a data writing timing diagram of another driving electrode provided by an embodiment of the present application. As shown in the embodiment of FIG. 49, h is an odd number and N is an odd number, and the time sequence of the data signals written by the N driving electrodes in the same electrode group 50 is as follows: the 1st driving electrode, the hth driving electrode, the 2nd driving electrode, the (h-1)th driving electrode, …, the (N-1)th driving electrode, and the Nth driving electrode. the (N-1)th driving electrode, and the Nth driving electrode.

[0215] The time sequence of the data signals written by the 12 driving electrodes is as follows: the 7th driving electrode (the seventh driving electrode D7), the 1st driving electrode (the first driving electrode D1), the 6th driving electrode (the sixth driving electrode D6), the 2nd driving electrode (the second driving electrode D2), the 5th driving electrode (the fifth driving electrode D5), the 3rd driving electrode (the third driving electrode D3), the 4th driving electrode (the fourth driving electrode D4), the 12th driving electrode (the twelfth driving electrode D12), the 8th driving electrode (the eighth driving electrode D8), the 11th driving electrode (the eleventh driving electrode D11), the 9th driving electrode (the ninth driving electrode D9), and the 10th driving electrode (the tenth driving electrode D10).

[0216] ​Figure 50 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 50, h is an odd number, N is an odd number, and the time order for writing data signals to the N driving electrodes 510 in the same electrode group 50 is: the 1st driving electrode, the hth driving electrode, the 2nd driving electrode, the (h-1)th driving electrode, ..., the ... The driving electrode, the Nth driving electrode, the (h+1)th driving electrode, the (N-1)th driving electrode, the (h+2)th driving electrode, ..., the... One driving electrode.

[0217] Figure 50 illustrates an example with N=11 and h=7, where the time sequence of the 11 driving electrodes writing data signals is as follows: the 1st driving electrode (first driving electrode D1), the 7th driving electrode (seventh driving electrode D7), the 2nd driving electrode (second driving electrode D2), the 6th driving electrode (sixth driving electrode D6), the 3rd driving electrode (third driving electrode D3), the 5th driving electrode (fifth driving electrode D5), the 4th driving electrode (fourth driving electrode D4), the 11th driving electrode (eleventh driving electrode D11), the 8th driving electrode (eighth driving electrode D8), the 10th driving electrode (tenth driving electrode D10), and the 9th driving electrode (ninth driving electrode D9).

[0218] Figure 51 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 51, h is an odd number, N is an odd number, and the time order for writing data signals to the N driving electrodes 510 in the same electrode group 50 is: the h-th driving electrode, the 1st driving electrode, the (h-1)-th driving electrode, the 2nd driving electrode, ..., the... The driving electrode, the (h+1)th driving electrode, the Nth driving electrode, the (h+2)th driving electrode, the (N-1)th driving electrode, ..., the... One driving electrode.

[0219] Figure 51 illustrates an example with N=11 and h=7, where the time sequence of the 11 driving electrodes writing data signals is as follows: the 7th driving electrode (seventh driving electrode D7), the 1st driving electrode (first driving electrode D1), the 6th driving electrode (sixth driving electrode D6), the 2nd driving electrode (second driving electrode D2), the 5th driving electrode (fifth driving electrode D5), the 3rd driving electrode (third driving electrode D3), the 4th driving electrode (fourth driving electrode D4), the 8th driving electrode (eighth driving electrode D8), the 11th driving electrode (eleventh driving electrode D11), the 9th driving electrode (ninth driving electrode D9), and the 10th driving electrode (tenth driving electrode D10).

[0220] Figure 52 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 52, h is an odd number, N is an odd number, and the time order of writing data signals to the N driving electrodes 510 in the same electrode group 50 is: the h-th driving electrode, the 1st driving electrode, the (h-1)-th driving electrode, the 2nd driving electrode, ..., the... The driving electrode, the Nth driving electrode, the (h+1)th driving electrode, the (N-1)th driving electrode, the (h+2)th driving electrode, ..., the... One driving electrode.

[0221] Figure 52 illustrates an example with N=11 and h=7, where the time sequence of the 11 driving electrodes writing data signals is as follows: the 7th driving electrode (7th driving electrode D7), the 1st driving electrode (1st driving electrode D1), the 6th driving electrode (6th driving electrode D6), the 2nd driving electrode (2nd driving electrode D2), the 5th driving electrode (5th driving electrode D5), the 3rd driving electrode (3rd driving electrode D3), the 4th driving electrode (4th driving electrode D4), the 11th driving electrode (11th driving electrode D11), the 8th driving electrode (8th driving electrode D8), the 10th driving electrode (10th driving electrode D10), and the 9th driving electrode (9th driving electrode D9).

[0222] Figure 53 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. Referring to Figure 53, multiple electrode subgroups 520 include a first electrode subgroup 521 and a second electrode subgroup 522. During the u-th subgroup writing period, the driving electrode 510 in the first electrode subgroup 521 writes data signals, and during the v-th subgroup writing period, the driving electrode 510 in the second electrode subgroup 522 writes data signals, where v > u, and u and v are positive integers. The first electrode subgroup 521 and the second electrode subgroup 522 constitute a third type of subgroup 50C. Within the same third type of subgroup 50C, data signals are written to the driving electrode 510 sequentially from the center of the third type of subgroup 50C to its edge, alternating between the beginning and end.

[0223] For example, in the embodiment shown in FIG53, M=2, and the two electrode subgroups 520 are the first electrode subgroup 521 and the second electrode subgroup 522, respectively. During the writing period of the first subgroup, the driving electrode 510 in the first electrode subgroup 521 writes data signals, and during the writing period of the second subgroup, the driving electrode 510 in the second electrode subgroup 522 writes data signals. When h is even and N is even, since both the first electrode subgroup 521 and the second electrode subgroup 522 are third-type subgroups 50C, the time order of writing data signals by the N driving electrodes 510 in the same electrode group 50 is: the first driving electrode, the second driving electrode, the third driving electrode, the fourth driving electrode, the fifth driving electrode, the sixth driving electrode, the seventh driving electrode, the eighth driving electrode, the ninth driving electrode, the tenth driving electrode, the eleventh driving electrode, the twelfth driving electrode the first driving electrode, the second driving electrode, the third driving electrode, the fourth driving electrode, the fifth driving electrode, the sixth driving electrode, the seventh driving electrode, the eighth driving electrode, the ninth driving electrode, the tenth driving electrode, the eleventh driving electrode, the twelfth driving electrode the first driving electrode, the second driving electrode, the third driving electrode, the fourth driving electrode, the fifth driving electrode, the sixth driving electrode, the seventh driving electrode, the eighth driving electrode, the ninth driving electrode, the tenth driving electrode, the eleventh driving electrode, the twelfth driving electrode the first driving electrode, the second driving electrode, the third driving electrode, the fourth driving electrode, the fifth driving electrode, the sixth driving electrode, the seventh driving electrode, the eighth driving electrode, the ninth driving electrode, the tenth driving electrode, the eleventh driving electrode, the twelfth driving electrode the first driving electrode, the second driving electrode, the third driving electrode, the fourth driving electrode, the fifth driving electrode, the sixth driving electrode, the seventh driving electrode, the eighth driving electrode, the ninth driving electrode, the tenth driving electrode, the eleventh driving electrode, the twelfth driving electrode the first driving electrode, the second driving electrode, the third driving electrode, the fourth driving electrode, the fifth driving electrode, the sixth driving electrode, the seventh driving electrode, the eighth driving electrode, the ninth driving electrode, the tenth driving electrode, the eleventh driving electrode, the twelfth driving electrode the first driving electrode, the second driving electrode, the third driving electrode, the fourth driving electrode, the fifth driving electrode, the sixth driving electrode, the seventh driving electrode, the eighth driving electrode, the ninth driving electrode, the tenth driving electrode, the eleventh driving electrode, the twelfth driving electrode the first driving electrode, the second driving electrode, the third driving electrode, the fourth driving electrode, the fifth driving electrode, the sixth driving electrode, the seventh driving electrode, the eighth driving electrode, the ninth driving electrode, the tenth driving electrode, the eleventh driving electrode, the twelfth driving electrode In this way, the driving electrodes 510 in the first electrode subgroup 521 and the second electrode subgroup 522 are alternately written with data signals from the center to the edge and from the first to the last, and the data writing time of the first driving electrode is close to the last data writing time period (the second last data writing time period in the first subgroup writing time period, i.e., the fifth data writing time period t5) in the first subgroup writing time period. The data writing time period of the Nth driving electrode is the last data writing time period in the second subgroup writing time period (the last data writing time period in the second subgroup writing time period, i.e., the twelfth data writing time period t12). After sequentially writing data signals in each electrode subgroup, the data writing time of the first driving electrode and the last driving electrode in the same electrode group 50 is close (the difference is 7 data writing time periods, which is less than N-1=11 data writing time periods), and the data writing time between the Nth driving electrode of the first electrode group 501 and the first driving electrode of the second electrode group 502 is close, which reduces the length of time during which the two driving electrodes closest to each other between adjacent electrode groups 50 have a positive and negative voltage difference after the voltage polarity is changed. In addition, the number of data writing time periods in which there is a voltage difference between adjacent driving electrodes 510 in the first electrode subgroup 521 and the second electrode subgroup 522 is 1 or 2, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0224] In FIG. 53, N=12 and h=6 are taken as examples for illustration, i.e., the time sequence of writing data signals by the 12 driving electrodes is: the third driving electrode (third driving electrode D3), the fourth driving electrode (fourth driving electrode D4), the second driving electrode (second driving electrode D2), the fifth driving electrode (fifth driving electrode D5), the first driving electrode (first driving electrode D1), the sixth driving electrode (sixth driving electrode D6), the ninth driving electrode (ninth driving electrode D9), the tenth driving electrode (tenth driving electrode D10), the eighth driving electrode (eighth driving electrode D8), the eleventh driving electrode (eleventh driving electrode D11), the seventh driving electrode (seventh driving electrode D7), and the twelfth driving electrode (twelfth driving electrode D12).

[0225] In another embodiment, Figure 54 is a data writing timing diagram of another driving electrode provided in this application embodiment. In the embodiment shown in Figure 54, when h is even and N is even, the timing order of writing data signals to the N driving electrodes 510 in the same electrode group 50 is as follows: The driving electrode, the first The driving electrode, the first The driving electrode, the first The first driving electrode, ..., the first driving electrode, the h-th driving electrode, the... The driving electrode, the first The driving electrode, the first The driving electrode, the first The driving electrodes are numbered from the first driving electrode to the next driving electrode, and so on, up to the Nth driving electrode and the (h+1)th driving electrode. Thus, the data writing order of the driving electrodes 510 in the first electrode subgroup 521 is from the center to the edge, and alternates from the beginning to the end. Therefore, the data writing time of the first driving electrode is close to the last data writing period in the writing period of the first subgroup (the second to last data writing period in the writing period of the first subgroup, i.e., the 5th data writing period t5). The data writing sequence of the driving electrodes 510 in the second electrode subgroup 522 is from the center to the edge and alternates from the tail to the head. Therefore, the data writing time of the Nth driving electrode is close to the last data writing time in the second subgroup (the second to last data writing time in the second subgroup, the 11th data writing time t11). After writing data signals sequentially to each electrode subgroup, the data writing time of the first driving electrode and the last driving electrode in the same electrode group 50 is close (difference of 6 data writing time periods). This reduces the time length of positive and negative voltage difference between the two closest driving electrodes in adjacent electrode groups 50 after voltage polarity change, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0226] Figure 54 illustrates an example with N=12 and h=6, where the time sequence of the 12 driving electrodes writing data signals is as follows: the 3rd driving electrode (D3), the 4th driving electrode (D4), the 2nd driving electrode (D2), the 5th driving electrode (D5), the 1st driving electrode (D1), the 6th driving electrode (D6), the 10th driving electrode (D10), the 9th driving electrode (D9), the 11th driving electrode (D11), the 8th driving electrode (D8), the 12th driving electrode (D12), and the 7th driving electrode (D7).

[0227] Figure 55 is a data writing timing diagram of another driving electrode provided by the embodiments of the present application. As shown in the embodiment of Figure 55, h is an even number, and N is an even number. In the same electrode group 50, the time sequence of the N driving electrodes 510 writing data signals is: the 4th driving electrode, the 3rd driving electrode, the 5th driving electrode, the 2nd driving electrode, the 6th driving electrode, the 1st driving electrode, the 9th driving electrode, the 10th driving electrode, the 8th driving electrode, the 11th driving electrode, the 7th driving electrode, the 12th driving electrode, and so on.

[0228] Figure 55 illustrates an example of N=12 and h=6, i.e., the time sequence of the 12 driving electrodes writing data signals is: the 4th driving electrode (the fourth driving electrode D4), the 3rd driving electrode (the third driving electrode D3), the 5th driving electrode (the fifth driving electrode D5), the 2nd driving electrode (the second driving electrode D2), the 6th driving electrode (the sixth driving electrode D6), the 1st driving electrode (the first driving electrode D1), the 9th driving electrode (the ninth driving electrode D9), the 10th driving electrode (the tenth driving electrode D10), the 8th driving electrode (the eighth driving electrode D8), the 11th driving electrode (the eleventh driving electrode D11), the 7th driving electrode (the seventh driving electrode D7), and the 12th driving electrode (the twelfth driving electrode D12).

[0229] ​​​​​​​​Figure 56 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 56, when h and N are even numbers, the timing order of writing data signals to the N driving electrodes 510 in the same electrode group 50 is as follows: The driving electrode, the first The driving electrode, the first The driving electrode, the first The first driving electrode, ..., the h-th driving electrode, the 1st driving electrode, the... The driving electrode, the first The driving electrode, the first The driving electrode, the first The data writing sequence of the driving electrodes 510 within the first electrode subgroup 521 is from the center to the edge, and alternates from the tail to the head. Therefore, the data writing time of the first driving electrode is the last data writing period in the first subgroup's writing time (the last data writing period in the first subgroup's writing time, i.e., the 6th data writing period t6). Similarly, the data writing sequence of the driving electrodes 510 within the second electrode subgroup 522 is from the center to the edge, and alternates from the tail to the head. Therefore, the data writing time of the Nth driving electrode is close to the last data writing period in the second subgroup's writing time (the second to last data writing period in the second subgroup's writing time, i.e., the 11th data writing period t11). After writing data signals sequentially to each electrode subgroup, the data writing time of the first driving electrode and the last driving electrode in the same electrode group 50 is similar (difference of 5 data writing time periods). This reduces the time length during which there is a positive and negative voltage difference between the two driving electrodes that are closest to each other in adjacent electrode groups 50 after the voltage polarity change, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0230] Figure 56 illustrates an example with N=12 and h=6, where the time sequence of the 12 driving electrodes writing data signals is as follows: the 4th driving electrode (D4), the 3rd driving electrode (D3), the 5th driving electrode (D5), the 2nd driving electrode (D2), the 6th driving electrode (D6), the 1st driving electrode (D1), the 10th driving electrode (D10), the 9th driving electrode (D9), the 11th driving electrode (D11), the 8th driving electrode (D8), the 12th driving electrode (D12), and the 7th driving electrode (D7).

[0231] The above embodiment takes N even number and h even number as an example to illustrate, the following embodiment takes N odd number and h even number as an example to illustrate, and the embodiments of the application will not be repeated here.

[0232] FIG. 57 is a data write timing diagram of another driving electrode provided by an embodiment of the application. As shown in the embodiment of FIG. 25, N is an odd number, h is an even number, and the time sequence of N driving electrodes 510 in the same electrode group 50 for writing data signals is: the 3rd driving electrode, the 4th driving electrode, the 2nd driving electrode, the 5th driving electrode, the 1st driving electrode, the 6th driving electrode, the 9th driving electrode, the 10th driving electrode, the 8th driving electrode, the 11th driving electrode, and the 7th driving electrode.

[0233] FIG. 57 exemplarily takes N=11 and h=6 as an example to illustrate, that is, the time sequence of 11 driving electrodes for writing data signals is: the 3rd driving electrode (the third driving electrode D3), the 4th driving electrode (the fourth driving electrode D4), the 2nd driving electrode (the second driving electrode D2), the 5th driving electrode (the fifth driving electrode D5), the 1st driving electrode (the first driving electrode D1), the 6th driving electrode (the sixth driving electrode D6), the 9th driving electrode (the ninth driving electrode D9), the 10th driving electrode (the tenth driving electrode D10), the 8th driving electrode (the eighth driving electrode D8), the 11th driving electrode (the eleventh driving electrode D11), and the 7th driving electrode (the seventh driving electrode D7).

[0234] FIG. 58 is a data write timing diagram of another driving electrode provided by an embodiment of the application. As shown in the embodiment of FIG. 58, when N is an odd number and h is an even number, the time sequence of N driving electrodes 510 in the same electrode group 50 for writing data signals is: the 3rd driving electrode, the 4th driving electrode, the 2nd driving electrode, the 5th driving electrode, the 1st driving electrode, the 6th driving electrode, the 9th driving electrode, the 10th driving electrode, the 8th driving electrode, the 11th driving electrode, and the 7th driving electrode.

[0235] ​​​​​​​​​​​​​​Figure 58 illustrates an example with N=11 and h=6, where the time sequence of the 11 driving electrodes writing data signals is as follows: the 3rd driving electrode (D3), the 4th driving electrode (D4), the 2nd driving electrode (D2), the 5th driving electrode (D5), the 1st driving electrode (D1), the 6th driving electrode (D6), the 9th driving electrode (D9), the 8th driving electrode (D8), the 10th driving electrode (D10), the 7th driving electrode (D7), and the 11th driving electrode (D11).

[0236] Figure 59 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 59, N is odd and h is even. In the same electrode group 50, the timing order of writing data signals by the N driving electrodes 510 is as follows: The driving electrode, the first The driving electrode, the first The driving electrode, the first The first driving electrode, ..., the h-th driving electrode, the 1st driving electrode, the... The driving electrode, the first The driving electrode, the first The driving electrode, ..., the Nth driving electrode, and the (h+1)th driving electrode.

[0237] Figure 59 illustrates an example with N=11 and h=6, where the time sequence of the 11 driving electrodes writing data signals is as follows: the 4th driving electrode (D4), the 3rd driving electrode (D3), the 5th driving electrode (D5), the 2nd driving electrode (D2), the 6th driving electrode (D6), the 1st driving electrode (D1), the 9th driving electrode (D9), the 10th driving electrode (D10), the 8th driving electrode (D8), the 11th driving electrode (D11), and the 7th driving electrode (D7).

[0238] Figure 60 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 60, N is odd and h is even. In the same electrode group 50, the timing sequence of writing data signals to the N driving electrodes 510 is as follows: The driving electrode, the first The driving electrode, the first The driving electrode, the first The first driving electrode, ..., the h-th driving electrode, the 1st driving electrode, the... The driving electrode, the first The driving electrode, the first The driving electrode, ..., the (h+1)th driving electrode, the Nth driving electrode.

[0239] Figure 60 illustrates an example with N=11 and h=6, where the time sequence of the 11 driving electrodes writing data signals is as follows: the 4th driving electrode (D4), the 3rd driving electrode (D3), the 5th driving electrode (D5), the 2nd driving electrode (D2), the 6th driving electrode (D6), the 1st driving electrode (D1), the 9th driving electrode (D9), the 8th driving electrode (D8), the 10th driving electrode (D10), the 7th driving electrode (D7), and the 11th driving electrode (D11).

[0240] The above embodiments are illustrated with N being odd and h being even. The following embodiments are illustrated with h being odd and N being even. The embodiments of this application will not be described in detail here.

[0241] Figure 61 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 61, h is an odd number and N is an even number. In the same electrode group 50, the time order of writing data signals by N driving electrodes 510 is as follows: The driving electrode, the first The driving electrode, the first The driving electrode, the first The first driving electrode, ..., the h-th driving electrode, the 1st driving electrode, the... The driving electrode, the first The driving electrode, the first The driving electrode, ..., the Nth driving electrode, and the (h+1)th driving electrode.

[0242] Figure 61 illustrates an example with N=12 and h=7, where the time sequence of the 12 driving electrodes writing data signals is as follows: 4th driving electrode (D4), 5th driving electrode (D5), 3rd driving electrode (D3), 6th driving electrode (D6), 2nd driving electrode (D2), 7th driving electrode (D7), 1st driving electrode (D1), 10th driving electrode (D10), 11th driving electrode (D11), 9th driving electrode (D9), 12th driving electrode (D12), and 8th driving electrode (D8).

[0243] Figure 62 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 62, h is an odd number and N is an even number. In the same electrode group 50, the time order of writing data signals by N driving electrodes 510 is as follows: The driving electrode, the first The driving electrode, the first The driving electrode, the first The first driving electrode, ..., the h-th driving electrode, the 1st driving electrode, the... The driving electrode, the first The driving electrode, the first The driving electrode, ..., the (h+1)th driving electrode, the Nth driving electrode.

[0244] Figure 62 illustrates an example with N=12 and h=7, where the time sequence of the 12 driving electrodes writing data signals is as follows: the 4th driving electrode (D4), the 5th driving electrode (D5), the 3rd driving electrode (D3), the 6th driving electrode (D6), the 2nd driving electrode (D2), the 7th driving electrode (D7), the 1st driving electrode (D1), the 10th driving electrode (D10), the 9th driving electrode (D9), the 11th driving electrode (D11), and the 8th driving electrode (D8).

[0245] Figure 63 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 63, h is an odd number and N is an even number. In the same electrode group 50, the time order of writing data signals by N driving electrodes 510 is as follows: The driving electrode, the first The driving electrode, the first the first driving electrode, the hth driving electrode, the (h+1)th driving electrode, the Nth driving electrode. the first driving electrode, the hth driving electrode, the (h+1)th driving electrode, the Nth driving electrode. the first driving electrode, the hth driving electrode, the (h+1)th driving electrode, the Nth driving electrode. the first driving electrode, the hth driving electrode, the (h+1)th driving electrode, the Nth driving electrode. the first driving electrode, the hth driving electrode, the (h+1)th driving electrode, the Nth driving electrode.

[0246] FIG. 63 illustrates an example of N=12 and h=7, i.e., the time sequence of the 12 driving electrodes writing data signals is: the fourth driving electrode (fourth driving electrode D4), the third driving electrode (third driving electrode D3), the fifth driving electrode (fifth driving electrode D5), the second driving electrode (second driving electrode D2), the sixth driving electrode (sixth driving electrode D6), the first driving electrode (first driving electrode D1), the tenth driving electrode (tenth driving electrode D10), the eleventh driving electrode (eleventh driving electrode D11), the ninth driving electrode (ninth driving electrode D9), the twelfth driving electrode (twelfth driving electrode D12), and the eighth driving electrode (eighth driving electrode D8).

[0247] FIG. 64 is a data writing timing diagram of another driving electrode provided by an embodiment of the present application. As shown in the embodiment of FIG. 64, h is an odd number and N is an even number, and in the same electrode group 50, the time sequence of the N driving electrodes 510 writing data signals is: the first driving electrode (first driving electrode D1), the hth driving electrode (hth driving electrode Dh), the (h+1)th driving electrode (h+1)th driving electrode Dh+1), the Nth driving electrode (Nth driving electrode DN). the first driving electrode, the hth driving electrode, the (h+1)th driving electrode, the Nth driving electrode. the first driving electrode, the hth driving electrode, the (h+1)th driving electrode, the Nth driving electrode. the first driving electrode, the hth driving electrode, the (h+1)th driving electrode, the Nth driving electrode. the first driving electrode, the hth driving electrode, the (h+1)th driving electrode, the Nth driving electrode. the first driving electrode, the hth driving electrode, the (h+1)th driving electrode, the Nth driving electrode. the first driving electrode, the hth driving electrode, the (h+1)th driving electrode, the Nth driving electrode. the first driving electrode, the hth driving electrode, the (h+1)th driving electrode, the Nth driving electrode.

[0248] FIG. 64 illustrates an example of N=12 and h=7, i.e., the time sequence of the 12 driving electrodes writing data signals is: the fourth driving electrode (fourth driving electrode D4), the third driving electrode (third driving electrode D3), the fifth driving electrode (fifth driving electrode D5), the second driving electrode (second driving electrode D2), the sixth driving electrode (sixth driving electrode D6), the first driving electrode (first driving electrode D1), the tenth driving electrode (tenth driving electrode D10), the ninth driving electrode (ninth driving electrode D9), the eleventh driving electrode (eleventh driving electrode D11), the eighth driving electrode (eighth driving electrode D8), and the twelfth driving electrode (twelfth driving electrode D12).

[0249] The above embodiment takes h as an odd number and N as an even number as an example for description, and the following embodiment takes h as an odd number and N as an odd number as an example for description, which will not be described here again.

[0250] FIG. 65 is a data write timing diagram of another driving electrode provided by an embodiment of the present application. As shown in the embodiment of FIG. 65, h is an odd number and N is an odd number, and the time sequence of N driving electrodes 510 in the same electrode group 50 for writing data signals is: the hth driving electrode, the (h+1)th driving electrode, the (h+2)th driving electrode, the (h+3)th driving electrode, the (h+4)th driving electrode, the (h+5)th driving electrode, the (h+6)th driving electrode, the (h+7)th driving electrode, the (h+8)th driving electrode, the (h+9)th driving electrode, the (h+10)th driving electrode, the (h+11)th driving electrode.

[0251] FIG. 65 exemplarily takes N=11 and h=7 as an example for description, that is, the time sequence of 11 driving electrodes for writing data signals is: the 4th driving electrode (the fourth driving electrode D4), the 5th driving electrode (the fifth driving electrode D5), the 3rd driving electrode (the third driving electrode D3), the 6th driving electrode (the sixth driving electrode D6), the 2nd driving electrode (the second driving electrode D2), the 7th driving electrode (the seventh driving electrode D7), the 1st driving electrode (the first driving electrode D1), the 9th driving electrode (the ninth driving electrode D9), the 10th driving electrode (the tenth driving electrode D10), the 8th driving electrode (the eighth driving electrode D8), and the 11th driving electrode (the eleventh driving electrode D11).

[0252] FIG. 66 is a data write timing diagram of another driving electrode provided by an embodiment of the present application. As shown in the embodiment of FIG. 66, h is an odd number and N is an odd number, and the time sequence of N driving electrodes 510 in the same electrode group 50 for writing data signals is: the hth driving electrode, the (h+1)th driving electrode, the (h+2)th driving electrode, the (h+3)th driving electrode, the (h+4)th driving electrode, the (h+5)th driving electrode, the (h+6)th driving electrode, the (h+7)th driving electrode, the (h+8)th driving electrode, the (h+9)th driving electrode, the (h+10)th driving electrode, the (h+11)th driving electrode. FIG. 66 exemplarily takes N=11 and h=7 as an example for description, that is, the time sequence of 11 driving electrodes for writing data signals is: the 4th driving electrode (the fourth driving electrode D4), the 5th driving electrode (the fifth driving electrode D5), the 3rd driving electrode (the third driving electrode D3), the 6th driving electrode (the sixth driving electrode D6), the 2nd driving electrode (the second driving electrode D2), the 7th driving electrode (the seventh driving electrode D7), the 1st driving electrode (the first driving electrode D1), the 9th driving electrode (the ninth driving electrode D9), the 10th driving electrode (the tenth driving electrode D10), the 8th driving electrode (the eighth driving electrode D8), and the 11th driving electrode (the eleventh driving electrode D11).​​​​​​​​​​​​​​​

[0253] Figure 66 illustrates an example with N=11 and h=7, where the time sequence of the 11 driving electrodes writing data signals is as follows: the 4th driving electrode (D4), the 5th driving electrode (D5), the 3rd driving electrode (D3), the 6th driving electrode (D6), the 2nd driving electrode (D2), the 7th driving electrode (D7), the 1st driving electrode (D1), the 10th driving electrode (D10), the 9th driving electrode (D9), the 11th driving electrode (D11), and the 8th driving electrode (D8).

[0254] Figure 67 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 67, h is an odd number, N is an odd number, and the time order of writing data signals to the N driving electrodes 510 in the same electrode group 50 is as follows: The driving electrode, the first The driving electrode, the first The driving electrode, the first The first driving electrode, ..., the first driving electrode, the h-th driving electrode, the... The driving electrode, the first The driving electrode, the first The driving electrode, the first The driving electrode, ..., the (h+1)th driving electrode, the Nth driving electrode.

[0255] Figure 67 illustrates an example with N=11 and h=7, where the time sequence of the 11 driving electrodes writing data signals is as follows: 4th driving electrode (D4), 3rd driving electrode (D3), 5th driving electrode (D5), 2nd driving electrode (D2), 6th driving electrode (D6), 1st driving electrode (D1), 7th driving electrode (D7), 9th driving electrode (D9), 10th driving electrode (D10), 8th driving electrode (D8), and 11th driving electrode (D11).

[0256] Figure 68 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 68, h is an odd number, N is an odd number, and the time order of writing data signals to the N driving electrodes 510 in the same electrode group 50 is as follows: The driving electrode, the first The driving electrode, the first The driving electrode, the first The first driving electrode, ..., the first driving electrode, the h-th driving electrode, the... The driving electrode, the first The driving electrode, the first The driving electrode, the first The driving electrode, ..., the Nth driving electrode, and the (h+1)th driving electrode.

[0257] Figure 68 illustrates an example with N=11 and h=7, where the time sequence of the 11 driving electrodes writing data signals is as follows: 4th driving electrode (D4), 3rd driving electrode (D3), 5th driving electrode (D5), 2nd driving electrode (D2), 6th driving electrode (D6), 1st driving electrode (D1), 7th driving electrode (D7), 10th driving electrode (D10), 9th driving electrode (D9), 11th driving electrode (D11), and 8th driving electrode (D8).

[0258] Figure 69 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. Referring to Figure 69, multiple electrode subgroups 520 include a first electrode subgroup 521 and a second electrode subgroup 522. During the u-th subgroup writing period, data signals are written to the driving electrode 510 in the first electrode subgroup 521, and during the v-th subgroup writing period, data signals are written to the driving electrode 510 in the second electrode subgroup 522, where v > u, and u and v are positive integers. The first electrode subgroup 521 and the second electrode subgroup 522 are a second type of subgroup 50B. Within the same second type of subgroup 50B, data signals are written sequentially from the first driving electrode to the last driving electrode in the second type of subgroup 50B to the driving electrode 510.

[0259] For example, in the embodiment shown in FIG69, M=2, and the two electrode subgroups 520 are the first electrode subgroup 521 and the second electrode subgroup 522, respectively. When N is an even number, the first electrode subgroup 521 includes the first electrode subgroup 521. From the first driving electrode to the Nth driving electrode, the... The first driving electrode is the first driving electrode of the first electrode subgroup 521. The second electrode subgroup 522 includes the first driving electrode. From the first driving electrode to the second driving electrode, where the first driving electrode is... The first driving electrode of the second electrode subgroup 522. In the first subgroup write period, the driving electrode 510 in the first electrode subgroup 521 writes the data signal, in the second subgroup write period, the driving electrode in the second electrode subgroup 522 writes the data signal, and when N is even, since the first electrode subgroup 521 and the second electrode subgroup 522 are both the second type of subgroup 50B, in the same electrode group 50, the time sequence of the N driving electrodes 510 writing the data signal is: the sixth driving electrode (sixth driving electrode D6), the seventh driving electrode (seventh driving electrode D7), the eighth driving electrode (eighth driving electrode D8), the ninth driving electrode (ninth driving electrode D9), the tenth driving electrode (tenth driving electrode D10), the eleventh driving electrode (eleventh driving electrode D11), the twelfth driving electrode (twelfth driving electrode D12), the fifth driving electrode (fifth driving electrode D5), the sixth driving electrode (sixth driving electrode D6), the fourth driving electrode (fourth driving electrode D4), the third driving electrode (third driving electrode D3), the second driving electrode (second driving electrode D2), and the first driving electrode (first driving electrode D1). The first driving electrode of the second electrode subgroup 522. In the first subgroup write period, the driving electrode 510 in the first electrode subgroup 521 writes the data signal, in the second subgroup write period, the driving electrode in the second electrode subgroup 522 writes the data signal, and when N is even, since the first electrode subgroup 521 and the second electrode subgroup 522 are both the second type of subgroup 50B, in the same electrode group 50, the time sequence of the N driving electrodes 510 writing the data signal is: the sixth driving electrode (sixth driving electrode D6), the seventh driving electrode (seventh driving electrode D7), the eighth driving electrode (eighth driving electrode D8), the ninth driving electrode (ninth driving electrode D9), the tenth driving electrode (tenth driving electrode D10), the eleventh driving electrode (eleventh driving electrode D11), the twelfth driving electrode (twelfth driving electrode D12), the fifth driving electrode (fifth driving electrode D5), the sixth driving electrode (sixth driving electrode D6), the fourth driving electrode (fourth driving electrode D4), the third driving electrode (third driving electrode D3), the second driving electrode (second driving electrode D2), and the first driving electrode (first driving electrode D1). The first driving electrode of the second electrode subgroup 522. In the first subgroup write period, the driving electrode 510 in the first electrode subgroup 521 writes the data signal, in the second subgroup write period, the driving electrode in the second electrode subgroup 522 writes the data signal, and when N is even, since the first electrode subgroup 521 and the second electrode subgroup 522 are both the second type of subgroup 50B, in the same electrode group 50, the time sequence of the N driving electrodes 510 writing the data signal is: the sixth driving electrode (sixth driving electrode D6), the seventh driving electrode (seventh driving electrode D7), the eighth driving electrode (eighth driving electrode D8), the ninth driving electrode (ninth driving electrode D9), the tenth driving electrode (tenth driving electrode D10), the eleventh driving electrode (eleventh driving electrode D11), the twelfth driving electrode (twelfth driving electrode D12), the fifth driving electrode (fifth driving electrode D5), the sixth driving electrode (sixth driving electrode D6), the fourth driving electrode (fourth driving electrode D4), the third driving electrode (third driving electrode D3), the second driving electrode (second driving electrode D2), and the first driving electrode (first driving electrode D1). The first driving electrode of the second electrode subgroup 522. In the first subgroup write period, the driving electrode 510 in the first electrode subgroup 521 writes the data signal, in the second subgroup write period, the driving electrode in the second electrode subgroup 522 writes the data signal, and when N is even, since the first electrode subgroup 521 and the second electrode subgroup 522 are both the second type of subgroup 50B, in the same electrode group 50, the time sequence of the N driving electrodes 510 writing the data signal is: the sixth driving electrode (sixth driving electrode D6), the seventh driving electrode (seventh driving electrode D7), the eighth driving electrode (eighth driving electrode D8), the ninth driving electrode (ninth driving electrode D9), the tenth driving electrode (tenth driving electrode D10), the eleventh driving electrode (eleventh driving electrode D11), the twelfth driving electrode (twelfth driving electrode D12), the fifth driving electrode (fifth driving electrode D5), the sixth driving electrode (sixth driving electrode D6), the fourth driving electrode (fourth driving electrode D4), the third driving electrode (third driving electrode D3), the second driving electrode (second driving electrode D2), and the first driving electrode (first driving electrode D1). The first driving electrode of the second electrode subgroup 522. In the first subgroup write period, the driving electrode 510 in the first electrode subgroup 521 writes the data signal, in the second subgroup write period, the driving electrode in the second electrode subgroup 522 writes the data signal, and when N is even, since the first electrode subgroup 521 and the second electrode subgroup 522 are both the second type of subgroup 50B, in the same electrode group 50, the time sequence of the N driving electrodes 510 writing the data signal is: the sixth driving electrode (sixth driving electrode D6), the seventh driving electrode (seventh driving electrode D7), the eighth driving electrode (eighth driving electrode D8), the ninth driving electrode (ninth driving electrode D9), the tenth driving electrode (tenth driving electrode D10), the eleventh driving electrode (eleventh driving electrode D11), the twelfth driving electrode (twelfth driving electrode D12), the fifth driving electrode (fifth driving electrode D5), the sixth driving electrode (sixth driving electrode D6), the fourth driving electrode (fourth driving electrode D4), the third driving electrode (third driving electrode D3), the second driving electrode (second driving electrode D2), and the first driving electrode (first driving electrode D1).

[0260] The first driving electrode of the second electrode subgroup 522. In the first subgroup write period, the driving electrode 510 in the first electrode subgroup 521 writes the data signal, in the second subgroup write period, the driving electrode in the second electrode subgroup 522 writes the data signal, and when N is even, since the first electrode subgroup 521 and the second electrode subgroup 522 are both the second type of subgroup 50B, in the same electrode group 50, the time sequence of the N driving electrodes 510 writing the data signal is: the sixth driving electrode (sixth driving electrode D6), the seventh driving electrode (seventh driving electrode D7), the eighth driving electrode (eighth driving electrode D8), the ninth driving electrode (ninth driving electrode D9), the tenth driving electrode (tenth driving electrode D10), the eleventh driving electrode (eleventh driving electrode D11), the twelfth driving electrode (twelfth driving electrode D12), the fifth driving electrode (fifth driving electrode D5), the sixth driving electrode (sixth driving electrode D6), the fourth driving electrode (fourth driving electrode D4), the third driving electrode (third driving electrode D3), the second driving electrode (second driving electrode D2), and the first driving electrode (first driving electrode D1).

[0261] In yet another embodiment, FIG. 70 is another data write timing diagram of the driving electrode provided by the embodiments of the present application. As shown in the embodiment of FIG. 70, N is even, the first electrode subgroup 521 includes the From the first driving electrode to the Nth driving electrode, the... The first driving electrode is the first driving electrode of the first electrode subgroup 521. The second electrode subgroup 522 includes the first driving electrode. From the first driving electrode to the second driving electrode, where the first driving electrode is... The first driving electrode is the first driving electrode of the second electrode subgroup 522. Therefore, in the same electrode group 50, the time sequence for writing data signals to the N driving electrodes 510 is as follows: The driving electrode, the first The first driving electrode, ..., the Nth driving electrode, the... The driving electrode, the first The process involves writing data signals sequentially to each electrode subgroup. Within the same electrode group 50, the data writing times for the first and last driving electrodes are similar (difference of 6 data writing periods, less than N-1 = 11 data writing periods). In adjacent electrode groups 50, the data writing times between the Nth driving electrode of the first electrode group 501 and the first driving electrode of the second electrode group 502 are similar. This reduces the time length during which the two closest driving electrodes in adjacent electrode groups 50 have a positive and negative voltage difference after voltage polarity reversal, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0262] Figure 70 illustrates an example with N=12, where the time sequence of writing data signals to the 12 driving electrodes is as follows: the 7th driving electrode (D7), the 8th driving electrode (D8), the 9th driving electrode (D9), the 10th driving electrode (D10), the 11th driving electrode (D11), the 12th driving electrode (D12), the 6th driving electrode (D6), the 5th driving electrode (D5), the 6th driving electrode (D6), the 4th driving electrode (D4), the 3rd driving electrode (D3), the 2nd driving electrode (D2), and the 1st driving electrode (D1).

[0263] Figure 71 is a data writing timing diagram of another driving electrode provided in an embodiment of this application. In the embodiment shown in Figure 71, N is an odd number, and the first electrode subgroup 521 includes the first... From the first driving electrode to the Nth driving electrode, the... The first driving electrode is the first driving electrode of the first electrode subgroup 521. The second electrode subgroup 522 includes the first driving electrode. From the first driving electrode to the second driving electrode, where the first driving electrode is... The first driving electrode is the first driving electrode of the second electrode subgroup 522. Then in the same electrode group 50, the time sequence of the N driving electrodes 510 writing data signals is: the first driving electrode, the second driving electrode, the third driving electrode, …, the Nth driving electrode, the (N+1)th driving electrode, the (N+2)th driving electrode, …, the (2N-1)th driving electrode, the (2N)th driving electrode.

[0264] The time sequence of the 12 driving electrodes writing data signals is: the fourth driving electrode D4, the fifth driving electrode D5, the sixth driving electrode D6, the seventh driving electrode D7, the third driving electrode D3, the second driving electrode D2, the first driving electrode D1.

[0265] FIG. 72 is a data writing timing diagram of an electrode subgroup provided by an embodiment of the present application. Referring to FIG. 72, M>2. In the same electrode group 50, the driving electrodes 510 in the first electrode subgroup 521 write data signals in the pth subgroup writing period, and the driving electrodes 510 in the Mth electrode subgroup write data signals in the qth subgroup writing period, where p and q are not equal, and the difference between p and q is less than M-1. Wherein, 1≤p≤M, 1≤q≤M, p and q are positive integers.

[0266] ​​​​In the M electrode sub-groups 520 of the same electrode group 50, the M electrode sub-groups 520 are written with data signals in the M sub-group write periods, and any two electrode sub-groups 520 are written with data signals in different sub-group write periods. In other words, the M electrode sub-groups 520 are written with data signals in the M sub-group write periods one by one in the sub-group write periods. The sub-group write periods in which each electrode sub-group 520 is written with data signals are different. When the first electrode sub-group 521 is written with data signals in the first sub-group write period and the Mth electrode sub-group is written with data signals in the Mth sub-group write period, the difference between p and q is equal to M-1. Therefore, to ensure that the difference between p and q is less than M-1, it means that the first electrode sub-group 521 is not written with data signals in the first sub-group write period, and / or the Mth electrode sub-group is not written with data signals in the Nth sub-group write period. Similarly, the Mth electrode sub-group is not written with data signals in the first sub-group write period, and / or the first electrode sub-group 521 is not written with data signals in the last sub-group write period. In this way, the difference between the number of data write periods between the first electrode sub-group 521 and the Mth electrode sub-group in the same electrode group 50 is less than M-1. Therefore, in adjacent electrode groups 50, the difference between the number of sub-group write periods between the Mth electrode sub-group of the first electrode group 501 and the first electrode sub-group 521 of the second electrode group 502 is less than M-1. The length of time during which the two driving electrodes closest to each other in adjacent electrode groups have a positive and negative voltage difference after the voltage polarity is changed is reduced, and the uniformity of the image projected and displayed by the liquid crystal grating is improved.

[0267] On the basis of the above-mentioned embodiments, continuing to refer to FIG. 72, in the same electrode group 50, the electrode sub-groups 520 are written with data signals from the edge of the electrode group 50 to the center of the electrode group 50, and the first and last electrode sub-groups are alternately written with data signals. The edge of the electrode group 50 can be understood as the first electrode sub-group (the first electrode sub-group 521) or the last electrode sub-group (the Mth electrode sub-group) of the electrode group 50. The center of the electrode group 50 can be understood as the electrode sub-groups 520 in the central region of the electrode group 50. When the electrode group 50 includes an even number of electrode sub-groups 520, the center of the electrode group 50 includes two electrode sub-groups 520. When the electrode group 50 includes an odd number of electrode sub-groups 520, the center of the electrode group 50 includes one electrode sub-group 520.

[0268] For example, in the embodiment shown in FIG72, an electrode group 50 includes six electrode subgroups 520, namely the first electrode subgroup 521, the second electrode subgroup 522, the third electrode subgroup 523, the fourth electrode subgroup 524, the fifth electrode subgroup 525, and the sixth electrode subgroup 526. The first subgroup write time period is when the first electrode subgroup 521 writes a data signal, the second subgroup write time period is when the Mth electrode subgroup writes a data signal, and when the electrode group 50 includes an even number of electrode subgroups 520 (M is even), the time order of the M electrode subgroup write data signals is: the first electrode subgroup, the Mth electrode subgroup, the second electrode subgroup, the (M-1)th electrode subgroup, ..., the... The first electrode subgroup, the first There are several electrode subgroups. Thus, the difference in the number of subgroup write periods between the first electrode subgroup 521 and the Mth electrode subgroup in the same electrode group 50 is 1. Similarly, in adjacent electrode groups 50, the difference in the number of subgroup write periods between the Mth electrode subgroup of the first electrode group 501 and the first electrode subgroup 521 of the second electrode group 502 is also 1. This reduces the time length during which a positive and negative voltage difference exists between the two closest electrode subgroups in adjacent electrode groups 50 after voltage polarity reversal. Furthermore, in the same electrode group 50, since data signals are written to electrode subgroups 520 in an alternating manner, adjacent subgroup write periods exist at the center of the electrode group 50, and these periods represent the data signals written to adjacent electrode subgroups. Outside the center of the electrode group 50, the number of subgroup write periods with voltage differences between adjacent electrode subgroups 520 is 2. In other words, in the same electrode group 50, the number of data write periods with voltage differences between adjacent electrode subgroups 520 is either 1 or 2, thereby improving the uniformity of the image projected and displayed by the liquid crystal raster.

[0269] In the embodiment shown in Figure 72, taking M=6 as an example, the time sequence of writing data signals to the 6 electrode subgroups is as follows: 1st electrode subgroup 521, 6th electrode subgroup 526, 2nd electrode subgroup 522, 5th electrode subgroup 525, 3rd electrode subgroup 523, and 4th electrode subgroup 524.

[0270] Exemplarily, the 1st electrode subgroup 521 includes a 1st driving electrode D1, a 2nd driving electrode D2, a 3rd driving electrode D3 and a 4th driving electrode D4. The 2nd electrode subgroup 522 includes a 5th driving electrode D5, a 6th driving electrode D6, a 7th driving electrode D7 and an 8th driving electrode D8. The 3rd electrode subgroup 523 includes a 9th driving electrode D9, a 10th driving electrode D10, an 11th driving electrode D11 and a 12th driving electrode D12. The 4th electrode subgroup 524 includes a 13th driving electrode D13, a 14th driving electrode D14, a 15th driving electrode D15 and a 16th driving electrode D16. The 5th electrode subgroup 525 includes a 17th driving electrode D17, an 18th driving electrode D18, a 19th driving electrode D19 and a 20th driving electrode D20. The 6th electrode subgroup 526 includes a 21st driving electrode D21, a 22nd driving electrode D22, a 23rd driving electrode D23 and a 24th driving electrode D24.

[0271] Exemplarily, the first data write period t1 is for writing data signals to the second driving electrode D2, the second data write period t2 is for writing data signals to the third driving electrode D3, the third data write period t3 is for writing data signals to the first driving electrode D1, and the fourth data write period t4 is for writing data signals to the fourth driving electrode D4. The fifth data write period t5 is for writing data signals to the twenty-second driving electrode D22, the sixth data write period t6 is for writing data signals to the twenty-third driving electrode D23, the seventh data write period t7 is for writing data signals to the twenty-first driving electrode D21, the eighth data write period t8 is for writing data signals to the twenty-fourth driving electrode D24, the ninth data write period t9 is for writing data signals to the sixth driving electrode D6, the tenth data write period t10 is for writing data signals to the seventh driving electrode D7, the eleventh data write period t11 is for writing data signals to the fifth driving electrode D5, and the twelfth data write period t12 is for writing data signals to the eighth driving electrode D8. The thirteenth data write period t13 is for writing data signals to the eighteenth driving electrode D18, the fourteenth data write period t14 is for writing data signals to the nineteenth driving electrode D19, the fifteenth data write period t15 is for writing data signals to the seventeenth driving electrode D17, and the sixteenth data write period t16 is for writing data signals to the twentieth driving electrode D20. The seventeenth data write period t17 is for writing data signals to the tenth driving electrode D10, the eighteenth data write period t18 is for writing data signals to the eleventh driving electrode D11, the nineteenth data write period t19 is for writing data signals to the ninth driving electrode D9, and the twentieth data write period t20 is for writing data signals to the twelfth driving electrode D12. The twenty-first data write period t21 is for writing data signals to the fourteenth driving electrode D14, the twenty-second data write period t22 is for writing data signals to the fifteenth driving electrode D15, the twenty-third data write period t23 is for writing data signals to the thirteenth driving electrode D13, and the twenty-fourth data write period t24 is for writing data signals to the sixteenth driving electrode D16.

[0272] It can be understood that the embodiment shown in FIG. 72 is exemplary but not limited thereto, and other embodiments will be described below in conjunction with the drawings.

[0273] Figure 73 is a data writing timing diagram of another electrode subgroup provided in an embodiment of this application. In the embodiment shown in Figure 73, the first subgroup writing period is for the writing data signal of the first electrode subgroup 521, and the second subgroup writing period is for the writing data signal of the Mth electrode subgroup. When the electrode group 50 includes an even number of electrode subgroups 520 (M is even), the time order of the writing data signals of the M electrode subgroups is: the Mth electrode subgroup, the first electrode subgroup, the (M-1)th electrode subgroup, the second electrode subgroup, ..., the... The first electrode subgroup, the first There are several electrode subgroups. Thus, in adjacent electrode groups 50, the difference in the number of subgroup writing periods between the Mth electrode subgroup of the first electrode group 501 and the 1st electrode subgroup 521 of the second electrode group 502 is 1, reducing the time length during which a positive and negative voltage difference exists between the two closest electrode subgroups in adjacent electrode groups 50 after a voltage polarity change. Furthermore, within the same electrode group 50, the number of data writing periods with voltage differences between adjacent electrode subgroups is either one or two, thereby improving the uniformity of the image projected and displayed by the liquid crystal raster.

[0274] Figure 73 illustrates an example with M=6, where the time sequence of writing data signals to the 6 electrode subgroups is: 6th electrode subgroup 526, 1st electrode subgroup 521, 5th electrode subgroup 525, 2nd electrode subgroup 522, 4th electrode subgroup 524, and 3rd electrode subgroup 523.

[0275] Figure 74 is a data writing timing diagram of another electrode subgroup provided in an embodiment of this application. In the embodiment shown in Figure 74, the first subgroup writing period is for the writing data signal of the first electrode subgroup 521, and the second subgroup writing period is for the writing data signal of the Mth electrode subgroup. When the electrode group 50 includes an odd number of electrode subgroups 520 (M is odd), the time order of the writing data signals of the M electrode subgroups is: the first electrode subgroup, the Mth electrode subgroup, the second electrode subgroup, the (M-1)th electrode subgroup, ..., the... There are several electrode subgroups. Thus, in adjacent electrode groups 50, the difference in the number of subgroup writing periods between the Mth electrode subgroup of the first electrode group 501 and the 1st electrode subgroup 521 of the second electrode group 502 is 1, reducing the time length during which a positive and negative voltage difference exists between the two closest electrode subgroups in adjacent electrode groups 50 after a voltage polarity change. Furthermore, within the same electrode group 50, the number of data writing periods with voltage differences between adjacent electrode subgroups is either one or two, thereby improving the uniformity of the image projected and displayed by the liquid crystal raster.

[0276] The time sequence of writing data signals by the 5 electrode subgroups is: the 1st electrode subgroup 521, the 5th electrode subgroup 525, the 2nd electrode subgroup 522, the 4th electrode subgroup 524, and the 3rd electrode subgroup 523.

[0277] FIG. 75 is a data writing timing diagram of another electrode subgroup according to an embodiment of the present application. As shown in the embodiment of FIG. 75, when the 1st subgroup writing period is used to write data signals to the 1st electrode subgroup 521, the 2nd subgroup writing period is used to write data signals to the Mth electrode subgroup, and the electrode group 50 includes an odd number of electrode subgroups 520 (M is an odd number), the time sequence of writing data signals by the M electrode subgroups is: the Mth electrode subgroup, the 1st electrode subgroup, the M-1th electrode subgroup, the 2nd electrode subgroup, …, and the M-2th electrode subgroup. Thus, in the adjacent electrode groups 50, the difference between the number of subgroup writing periods of the Mth electrode subgroup of the 1st electrode group 501 and the 1st electrode subgroup 521 of the 2nd electrode group 502 is 1, which reduces the length of time during which the two electrode subgroups closest to each other between the adjacent electrode groups 50 after the voltage polarity is changed have a positive-negative voltage difference. In addition, in the same electrode group 50, the number of data writing periods during which there is a voltage difference between the adjacent electrode subgroups is 1 or 2, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0278] The time sequence of writing data signals by the 5 electrode subgroups is: the 1st electrode subgroup 521, the 5th electrode subgroup 525, the 2nd electrode subgroup 522, the 4th electrode subgroup 524, and the 3rd electrode subgroup 523.

[0279] It should be noted that the present application only exemplarily takes the case where the plurality of electrode subgroups 520 are all the third type of subgroups 50C as an example for description, but the present application is not limited thereto, and in other embodiments, the plurality of electrode subgroups 520 can include at least one of the first type of subgroups 50A or the third type of subgroups 50C, wherein in the same first type of subgroup 50A, the driving electrodes 510 are sequentially written with data signals from the edge of the first type of subgroup 50A to the center of the first type of subgroup 50A in an alternating manner.

[0280] FIG. 76 is a data writing timing diagram of another electrode subgroup according to an embodiment of the present application. As shown in FIG. 76, in the same electrode group 50, the electrode subgroups 520 are sequentially written with data signals from the center of the electrode group 50 to the edge of the electrode group 50 in an alternating manner.

[0281] For example, as shown in the embodiment of FIG. 76, when the 5th (M-1)th data writing period is used to write data signals to the 1st driving electrode, the 6th (M)th data writing period is used to write data signals to the Mth driving electrode, and the electrode group 50 includes an even number of electrode subgroups (M is even), in the same electrode group 50, the time sequence of writing data signals to the M electrode subgroups is: the 3rd electrode subgroup 523, the 4th electrode subgroup 524, the 2nd electrode subgroup 522, the 5th electrode subgroup 525, the 1st electrode subgroup 521, and the 6th electrode subgroup 526.

[0282] For example, as shown in the embodiment of FIG. 76, when the 5th (M-1)th data writing period is used to write data signals to the 1st driving electrode, the 6th (M)th data writing period is used to write data signals to the Mth driving electrode, and the electrode group 50 includes an even number of electrode subgroups (M is even), in the same electrode group 50, the time sequence of writing data signals to the M electrode subgroups is: the 3rd electrode subgroup 523, the 4th electrode subgroup 524, the 2nd electrode subgroup 522, the 5th electrode subgroup 525, the 1st electrode subgroup 521, and the 6th electrode subgroup 526.

[0283] It should be understood that the embodiment of FIG. 76 is only illustrative, and the present application is not limited thereto. Other embodiments will be described below with reference to the accompanying drawings.

[0284] FIG. 77 is another data writing timing diagram of an electrode subgroup according to an embodiment of the present application. As shown in the embodiment of FIG. 77, when the 5th (M-1)th data writing period is used to write data signals to the 1st driving electrode, the 6th (M)th data writing period is used to write data signals to the Mth driving electrode, and the electrode group 50 includes an even number of electrode subgroups (M is even), in the same electrode group 50, the time sequence of writing data signals to the M electrode subgroups is: the 3rd electrode subgroup 523, the 4th electrode subgroup 524, the 2nd electrode subgroup 522, the 5th electrode subgroup 525, the 1st electrode subgroup 521, and the 6th electrode subgroup 526. ​​​​The first electrode subgroup, the first The first electrode subgroup, the first The first electrode subgroup, the first The electrode subgroups are named as follows: the first electrode subgroup 501, ..., the Mth electrode subgroup, and the 1st electrode subgroup. Thus, in adjacent electrode groups 50, the difference in the number of subgroup writing time periods between the Mth electrode subgroup of the first electrode group 501 and the 1st electrode subgroup 521 of the second electrode group 502 is 1, reducing the time length during which a positive and negative voltage difference exists between the two closest electrode subgroups of adjacent electrode groups 50 after a voltage polarity change. Furthermore, within the same electrode group 50, the number of data writing time periods with a voltage difference between adjacent electrode subgroups 520 is either 1 or 2, thereby improving the uniformity of the image projected and displayed by the liquid crystal raster.

[0285] Figure 77 illustrates an example with M=6, where the time sequence of writing data signals to the 6 electrode subgroups is: 4th electrode subgroup 524, 3rd electrode subgroup 523, 5th electrode subgroup 525, 2nd electrode subgroup 522, 6th electrode subgroup 526, and 1st electrode subgroup 521.

[0286] Figure 78 is a data writing timing diagram of another electrode subgroup provided in an embodiment of this application. In the embodiment shown in Figure 78, the first driving electrode writes the data signal during the 4th (M-1)th data writing period, and the Mth driving electrode writes the data signal during the 5th (M)th data writing period. When the electrode group 50 includes an odd number of electrode subgroups 520 (M is odd), the timing order of the data writing signals for the M electrode subgroups within the same electrode group 50 is as follows: The first electrode subgroup, the first The first electrode subgroup, the first The first electrode subgroup, the first The electrode subgroups are named as follows: the Mth electrode subgroup, ..., the Mth electrode subgroup, and the 1st electrode subgroup. Thus, in adjacent electrode groups 50, the difference in the number of subgroup writing time periods between the Mth electrode subgroup of the first electrode group 501 and the 1st electrode subgroup 521 of the second electrode group 502 is 1, reducing the time length during which a positive and negative voltage difference exists between the two closest electrode subgroups in adjacent electrode groups 50 after a voltage polarity change. Furthermore, within the same electrode group 50, the number of data writing time periods with voltage differences between adjacent electrode subgroups is either 1 or 2, thereby improving the uniformity of the image projected and displayed by the liquid crystal raster.

[0287] Figure 78 illustrates an example with M=5, where the time sequence of writing data signals to the 5 electrode subgroups is: 3rd electrode subgroup 523, 4th electrode subgroup 524, 2nd electrode subgroup 522, 5th electrode subgroup 525, and 1st electrode subgroup 521.

[0288] FIG. 79 is a data writing timing diagram of another electrode sub-group according to an embodiment of the present application. As shown in the embodiment of FIG. 79, when the first (M-1) data writing period is used to write data signals to the first driving electrode, the fifth (M) data writing period is used to write data signals to the Mth driving electrode, and the electrode group 50 includes an odd number of electrode sub-groups 520 (M is an odd number), the time sequence of writing data signals to the M electrode sub-groups in the same electrode group 50 is: the Mth electrode sub-group of the first electrode group 501, the first electrode sub-group of the second electrode group 502, the (M-1)th electrode sub-group of the second electrode group 502, the second electrode sub-group of the third electrode group 503, the (M-2)th electrode sub-group of the third electrode group 503, the third electrode sub-group of the fourth electrode group 504, the (M-3)th electrode sub-group of the fourth electrode group 504, the fourth electrode sub-group of the fifth electrode group 505, the (M-4)th electrode sub-group of the fifth electrode group 505, the fifth electrode sub-group of the sixth electrode group 506, and so on, the first electrode sub-group of the Mth electrode group 506, and the Mth electrode sub-group of the (M+1)th electrode group 507. In this way, in adjacent electrode groups 50, the difference between the number of sub-group writing periods between the Mth electrode sub-group of the first electrode group 501 and the first electrode sub-group of the second electrode group 502 is 1, which reduces the length of time during which the two electrode sub-groups closest to each other between adjacent electrode groups 50 after the voltage polarity is changed have a positive-negative voltage difference. In addition, in the same electrode group 50, the number of data writing periods during which there is a voltage difference between adjacent electrode sub-groups is 1 or 2, thereby improving the uniformity of the image projected and displayed by the liquid crystal grating.

[0289] FIG. 79 illustrates an example in which M=5, i.e., the time sequence of writing data signals to the five electrode sub-groups is: the third electrode sub-group 523, the second electrode sub-group 522, the fourth electrode sub-group 524, the first electrode sub-group 521, and the fifth electrode sub-group 525.

[0290] It should be noted that the present application only illustrates an example in which the plurality of electrode sub-groups 520 are all third-type sub-groups 50C, but this is not limiting. In other embodiments, the plurality of electrode sub-groups 520 can include at least one of the first-type sub-groups 50A or the third-type sub-groups 50C, wherein in the same first-type sub-group 50A, the driving electrodes 510 are sequentially written with data signals from the edge of the first-type sub-group 50A to the center of the first-type sub-group 50A, and the first and last electrodes are alternately connected. In the same third-type sub-group 50C, the driving electrodes 510 are sequentially written with data signals from the center of the third-type sub-group 50C to the edge of the third-type sub-group 50C, and the first and last electrodes are alternately connected.

[0291] FIG. 80 is a circuit structure diagram of a liquid crystal grating according to an embodiment of the present application. Referring to FIG. 80, the liquid crystal grating further includes a multiplexing circuit 60 and a source line 70. The multiplexing circuit 60 includes an input end and N output ends, the input end is electrically connected to the source line 70, and the N output ends are electrically connected to the N driving electrodes in the same electrode group 50 in one-to-one correspondence. The multiplexing circuit 60 is used to electrically connect one of the N output ends to the source line 70 during a data writing period. ​​​​

[0292] As shown in the embodiment shown in FIG. 80, one electrode group 50 includes 6 driving electrodes arranged in sequence from left to right, and the 6 driving electrodes arranged in sequence are respectively a first driving electrode D1, a second driving electrode D2, a third driving electrode D3, a fourth driving electrode D4, a fifth driving electrode D5, and a sixth driving electrode D6.

[0293] The multiplexing circuit 60 includes 6 transistors, input ends of the 6 transistors are electrically connected with the source line 70, output ends of the 6 transistors are electrically connected with the 6 driving electrodes in the same electrode group 50 one by one, and control ends of the 6 transistors are electrically connected with the 6 control signal output ends one by one. In this way, one of the 6 output ends is turned on with the source line 70 by the control signal output end, so as to write the data signal into the corresponding driving electrode 510 by the source line 70. For example, as shown in the embodiment shown in FIG. 80, the first control signal output end Mux1 corresponds to the first driving electrode D1, the second control signal output end Mux2 corresponds to the second driving electrode D2, the third control signal output end Mux3 corresponds to the third driving electrode D3, the fourth control signal output end Mux4 corresponds to the fourth driving electrode D4, the fifth control signal output end Mux5 corresponds to the fifth driving electrode D5, and the sixth control signal output end Mux6 corresponds to the sixth driving electrode D6. Then, in one data writing period, the first control signal output end Mux1 outputs a conduction signal, and the corresponding transistor is turned on to write the data signal into the first driving electrode D1 by the source line 70.

[0294] It should be noted that the adjacent source lines include a first source line 710 and a second source line 720, and the adjacent electrode groups 50 include a first electrode group 501 and a second electrode group 502. The first source line 710 writes the data signal into the first electrode group 501, and the second source line 720 writes the data signal into the second electrode group 502. The driving electrodes 510 at the same position in different electrode groups 50 write the data signal in the same data writing period.

[0295] FIG. 81 is a timing diagram of a multiplexing circuit according to an embodiment of the present application. Referring to FIG. 81, at least part of the working period includes a first period S1 and a second period S2, the first period S1 includes the first stage, and the second period S2 includes the first stage. The voltage polarity of the data signal in the first period S1 is opposite to the voltage polarity of the data signal in the second period S2.

[0296] Referring to FIG. 4, FIG. 80 and FIG. 81, the second time period S2 includes the first phase. In the first time period S1, the voltage polarity provided by the source line 70 is positive polarity. For example, a data signal of 1V is written to the first driving electrode D1, a data signal of 2V is written to the second driving electrode D2, a data signal of 3V is written to the third driving electrode D3, a data signal of 4V is written to the fourth driving electrode D4, a data signal of 5V is written to the fifth driving electrode D5, and a data signal of 6V is written to the sixth driving electrode D6. In the second time period S2, the voltage polarity provided by the source line 70 is negative polarity. In the first data writing time period t1 within the second time period S2, the first control signal output terminal Mux1 is at low level, and a data signal of -1V on the source line 70 is written to the first driving electrode D1. In the second data writing time period t2 within the second time period S2, the fourth control signal output terminal Mux4 is at low level, and a data signal of -4V on the source line 70 is written to the fourth driving electrode D4. In the third data writing time period t3 within the second time period S2, the second control signal output terminal Mux2 is at low level, and a data signal of -2V on the source line 70 is written to the second driving electrode D2. In the fourth data writing time period t4 within the second time period S2, the third control signal output terminal Mux3 is at low level, and a data signal of -3V on the source line 70 is written to the third driving electrode D3. In the fifth data writing time period t5 within the second time period S2, the sixth control signal output terminal Mux6 is at low level, and a data signal of -6V on the source line 70 is written to the sixth driving electrode D6. In the sixth data writing time period t6 within the second time period S2, the fifth control signal output terminal Mux5 is at low level, and a data signal of -5V on the source line 70 is written to the fifth driving electrode D5. Thus, the transformation of the voltage polarity on the plurality of driving electrodes is realized. It can be understood that the first time period S1 includes the first phase, and the first time period S1 can transform the voltage polarity on the plurality of driving electrodes in a manner similar to the second time period S2, compared to the time period before the first time period S1. The sixth data writing time period t6 within the first time period S1 is referred to as the "data writing time period t0" of the second time period S2.

[0297] FIG. 82 is a timing diagram of another multiplexing circuit according to an embodiment of the present application. Referring to FIG. 82, at least part of the working time period includes the first time period S1, the first time period S1 includes a plurality of writing sub-time periods S10, and the first writing sub-time period S10 includes the first phase.

[0298] Exemplarily, the first time period S1 includes two write sub-periods S10, which are respectively a first write sub-period S11 and a second write sub-period S12. The first write sub-period S11 is before the second write sub-period S12, and the first write sub-period S11 is the first write sub-period S10 in the first time period S1, and the second write sub-period S12 is the second write sub-period S10 in the first time period S1. The first write sub-period S11 has a long positive and negative voltage difference with the previous time period, and therefore the data signal is written to the driving electrodes according to the time sequence of the first stage in the first write sub-period S11. In the second write sub-period S12 after the first write sub-period S11, the voltage polarity of the data signal is the same as that in the first write sub-period S11 because the voltage polarity of the driving electrodes has been changed in the first write sub-period S11. The time sequence of writing the data signal to the driving electrodes in the second write sub-period S12 is not limited. For example, the data signal can be written to the driving electrodes according to the conventional time sequence, and the data writing sequence of the driving electrodes is simple on the basis of ensuring the uniformity of the display image projected by the liquid crystal grating.

[0299] Exemplarily, in the second write sub-period S12, the low level of the first control signal output terminal Mux1, the low level of the second control signal output terminal Mux2, the low level of the third control signal output terminal Mux3, the low level of the fourth control signal output terminal Mux4, the low level of the fifth control signal output terminal Mux5 and the low level of the sixth control signal output terminal Mux6 appear in time sequence, so that the data signal of 1V is written to the first driving electrode D1, the data signal of 2V is written to the second driving electrode D2, the data signal of 3V is written to the third driving electrode D3, the data signal of 4V is written to the fourth driving electrode D4, the data signal of 5V is written to the fifth driving electrode D5, and the data signal of 6V is written to the sixth driving electrode D6 in time sequence.

[0300] In other embodiments, the first time period S1 includes a plurality of write sub-periods S10, and each of the plurality of write sub-periods S10 includes the first stage.

[0301] Based on the above inventive concept, the embodiments of the present application further provide a stereoscopic display device. The stereoscopic display device includes the liquid crystal grating of any of the embodiments of the present application. Exemplarily, the stereoscopic display device can be a mobile phone, a tablet computer, a notebook computer, or a television, a display area, a digital photo frame, a navigator, a smart wearable display device, or any product or component having a display function, and the embodiments of the present application do not specially limit this.

Claims

1. A liquid crystal grating, comprising a plurality of electrode groups, each of the electrode groups comprising N driving electrodes arranged in sequence; At least part of the working period of the liquid crystal grating comprises a first stage, the first stage comprising: In the same electrode group, the first driving electrode is written with a data signal at the i th data writing period, and the N th driving electrode is written with a data signal at the j th data writing period, i and j are not equal, and the difference between i and j is less than N-1; Wherein, 1≤i≤N, 1≤j≤N, i, j are positive integers, and N is a positive integer greater than 1.

2. The liquid crystal grating of claim 1, wherein, In the same electrode group, the k th driving electrode is written with a data signal at the f th data writing period, and the k+1 th driving electrode is written with a data signal at the g th data writing period; f and g are not equal, and the difference between f and g is less than N-1; Wherein, 1≤f≤N, 1≤g≤N, 1≤k≤N-1, f, g, k are positive integers.

3. The liquid crystal grating of claim 1, wherein, In the same electrode group, the k th driving electrode is written with a data signal at the f th data writing period, and the s th driving electrode is written with a data signal at the f+1 th data writing period, the k th driving electrode and the s th driving electrode are separated by at least one driving electrode; Wherein, 1≤f≤N-1, 1≤k≤N, 1≤s≤N, f, k, s are positive integers.

4. The liquid crystal grating of claim 1, wherein, i=1, j=2.

5. The liquid crystal grating of claim 1, wherein, The electrode group comprises a first type of subgroup; In the same first type of subgroup, the driving electrodes are written with data signals in turn from the edge of the first type of subgroup to the center of the first type of subgroup, and the head and tail are alternated.

6. The liquid crystal grating of claim 1, wherein, The electrode group comprises a second type of subgroup; In the same second type of subgroup, the driving electrodes are written with data signals in turn from the first driving electrode to the last driving electrode in the second type of subgroup.

7. The liquid crystal grating of claim 6, wherein, The 2 nd driving electrode, the 3 rd driving electrode, …, the N-1 th driving electrode in the electrode group constitute the second type of subgroup; In the same electrode group, the time sequence of writing the data signal for the N driving electrodes is: the 1 st driving electrode, the N th driving electrode, and the second type of subgroup.

8. The liquid crystal grating of claim 1, wherein, i=N-1, j=N.

9. The liquid crystal grating of claim 1, wherein, The electrode group comprises a third type of subgroup; In the same third type of subgroup, the driving electrodes are written with data signals in turn from the center of the third type of subgroup to the edge of the third type of subgroup, and the head and tail are alternated. The electrode group comprises M electrode subgroups arranged in sequence, and each of the electrode subgroups comprises a plurality of driving electrodes; 10. The liquid crystal grating of claim 1, wherein, M electrode subgroups are written with data signals in turn at M sub-group writing periods, and the sub-group writing period comprises a plurality of data writing periods; Wherein, M is a positive integer greater than 1. The plurality of electrode subgroups comprises a first electrode subgroup and a second electrode subgroup, and the driving electrodes in the first electrode subgroup are written with data signals at the u th sub-group writing period, and the driving electrodes in the second electrode subgroup are written with data signals at the v th sub-group writing period; v>u, u, v are positive integers.

11. The liquid crystal grating of claim 10, wherein, ​ The first electrode sub-group is a third type sub-group; in the same third type sub-group, from the center of the third type sub-group to the edge of the third type sub-group, and alternately from the beginning to the end, the driving electrodes write data signals in turn; The second electrode sub-group is a first type sub-group; in the same first type sub-group, from the edge of the first type sub-group to the center of the first type sub-group, and alternately from the beginning to the end, the driving electrodes write data signals in turn.

12. The liquid crystal grating of claim 10, wherein, The plurality of electrode sub-groups comprises a first electrode sub-group and a second electrode sub-group, in the u-th sub-group writing period, the driving electrodes in the first electrode sub-group write data signals, and in the v-th sub-group writing period, the driving electrodes in the second electrode sub-group write data signals; v>u, u and v are positive integers; The first electrode sub-group and the second electrode sub-group are first type sub-groups; in the same first type sub-group, from the edge of the first type sub-group to the center of the first type sub-group, and alternately from the beginning to the end, the driving electrodes write data signals in turn.

13. The liquid crystal grating of claim 10, wherein, The plurality of electrode sub-groups comprises a first electrode sub-group and a second electrode sub-group, in the u-th sub-group writing period, the driving electrodes in the first electrode sub-group write data signals, and in the v-th sub-group writing period, the driving electrodes in the second electrode sub-group write data signals; v>u, u and v are positive integers; The first electrode sub-group and the second electrode sub-group are third type sub-groups; in the same third type sub-group, from the center of the third type sub-group to the edge of the third type sub-group, and alternately from the beginning to the end, the driving electrodes write data signals in turn.

14. The liquid crystal grating of claim 10, wherein, The plurality of electrode sub-groups comprises a first electrode sub-group and a second electrode sub-group, in the u-th sub-group writing period, the driving electrodes in the first electrode sub-group write data signals, and in the v-th sub-group writing period, the driving electrodes in the second electrode sub-group write data signals; v>u, u and v are positive integers; The first electrode sub-group and the second electrode sub-group are second type sub-groups; in the same second type sub-group, from the first driving electrode to the last driving electrode in the second type sub-group, the driving electrodes write data signals in turn.

15. The liquid crystal grating of claim 10, wherein, M＞2； In the same electrode group, in the p-th sub-group writing period, the driving electrodes in the first electrode sub-group write data signals, and in the q-th sub-group writing period, the driving electrodes in the M-th electrode sub-group write data signals, p and q are not equal, and the difference between p and q is less than M-1; Wherein, 1≤p≤M, 1≤q≤M, p and q are positive integers.

16. The liquid crystal grating of claim 15, wherein, In the same electrode group, from the edge of the electrode group to the center of the electrode group, and alternately from the beginning to the end, the electrode sub-groups write data signals in turn.

17. The liquid crystal grating of claim 15, wherein, In the same electrode group, from the center of the electrode group to the edge of the electrode group, and alternately from the beginning to the end, the electrode sub-groups write data signals in turn.

18. The liquid crystal grating of claim 1, further comprising a multiplexing circuit and a source line. The multiplexing circuit comprises an input end and N output ends, the input end is electrically connected with the source line, and N output ends are electrically connected with N driving electrodes in the same electrode group one by one, and the multiplexing circuit is used for electrically connecting one of N output ends with the source line in a data writing period.

19. The liquid crystal grating of claim 1, wherein, The at least partial working period comprises a first period and a second period, the first period comprises the first stage, and the second period comprises the first stage, wherein the voltage polarity of the data signal in the first period is opposite to the voltage polarity of the data signal in the second period.

20. The liquid crystal grating of claim 1, wherein, The at least partial working period comprises a first period, and the first period comprises a plurality of writing sub-periods, and the first writing sub-period comprises the first stage.

21. A stereoscopic display device comprising the liquid crystal grating of any one of claims 1-20.

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