A liquid crystal molecule arrangement system compatible with both straight lines and curves and its data processing method

Abstract

This invention relates to the field of optical technology, and discloses a liquid crystal molecule arrangement system compatible with both straight lines and curves, and its data processing method, to improve resource utilization and reduce system deployment and maintenance costs. The system includes a main controller that establishes communication connections with a host computer, an acousto-optic crystal, an electro-optic crystal, and various drivers for displacement control. The main controller performs the following steps: determining the task mode set by the user via the host computer; after obtaining the configuration information corresponding to the current task mode, executing linkage control corresponding to the current task mode; wherein, in straight line mode, the acousto-optic crystal maintains the optical path in an open state and links with the first driver until a single straight line is recorded, and links with the second driver during the process of the acousto-optic crystal switching to an off state to achieve a phased straight line switching process; in curve mode, the acousto-optic crystal controls its switching state according to the arrival pulse signal of the third driver.

Description

Technical Field

[0001] This invention relates to the field of optical technology, and in particular to a liquid crystal molecule arrangement system compatible with both straight lines and curves, and its data processing method. Background Technology

[0002] In the fabrication of diffractive optical elements (DOEs), the alignment of liquid crystal molecules is usually required. Furthermore, the alignment paths of liquid crystal molecules in different elements can generally be divided into two types: straight lines and curves. For example, liquid crystal polarization gratings typically use a straight alignment path, while vortex fragments (whose fast axis alignment is consistent radially along the substrate and gradually changes angularly along the substrate) typically use a curve alignment path. This necessitates that existing manufacturers develop different fabrication equipment for different alignment paths.

[0003] By integrating two different liquid crystal molecule arrangement functions—linear and curved—a single system can significantly reduce system deployment and maintenance costs while improving resource utilization. Summary of the Invention

[0004] The purpose of this invention is to disclose a liquid crystal molecule arrangement system compatible with both straight lines and curves, and its data processing method, so as to improve resource utilization and reduce the cost of system deployment and maintenance.

[0005] To achieve the above objectives, the system disclosed in this invention includes:

[0006] First driver for driving the horizontal displacement stage to move in the X-axis direction;

[0007] A second driver for driving the horizontal displacement stage to move in the Y-axis direction;

[0008] A third actuator for driving the horizontal displacement stage to rotate;

[0009] A fourth actuator for adjusting the Z-axis spacing between the objective lens and the substrate; the substrate is supported on the horizontal displacement stage, and the objective lens is deployed on the vertical displacement stage.

[0010] Acousto-optic crystals used to control optical circuit switches;

[0011] Electro-optic crystals used to control the phase change of a beam;

[0012] A main controller that establishes communication connections with the host computer and the first driver, second driver, third driver, fourth driver, acousto-optic crystal, and electro-optic crystal, respectively;

[0013] The main controller includes a memory, a processor, and a computer program stored in the memory and executable on the processor. The processor executes the computer program to perform the following steps:

[0014] Step S1: Determine the task mode set by the user through the host computer. The task mode includes at least: straight line mode and curve mode; the curve type includes circle and spiral line.

[0015] Step S2: After obtaining the configuration information corresponding to the current task mode, execute the linkage control corresponding to the current task mode;

[0016] In linear mode, the acousto-optic crystal keeps the optical path in the open state and is linked with the first driver until a single linear line is recorded. During the process of the acousto-optic crystal switching to the off state, it is linked with the second driver to realize the phased linear switching process.

[0017] In curve mode, the acousto-optic crystal controls the switching state of the acousto-optic crystal according to the arrival pulse signal of the third driver; and it is linked with the first driver or the second driver to realize the switching of the phase-separated circles or the gradual change of the distance between each orientation point on the vortex line and the center of the circle.

[0018] Preferably, the system of the present invention further includes a rotary stage capable of linearly controlling the light intensity incident on the substrate in a rotational manner, and a fifth driver for driving the rotary stage to position the rotation angle, the fifth driver establishing a communication connection with the main controller; the main controller is also used to maintain the light intensity output by the rotary stage constant in linear mode; and to control the rotary stage to linearly increase with the distance between the current orientation point and the center of the circle in curved mode.

[0019] Preferably, the electro-optic crystal is used to control the phase change of the light beam according to the received voltage.

[0020] Preferably, the signals from the acousto-optic crystal and the electro-optic crystal originate from a square wave controller linked to the main controller. The square wave controller includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it performs the following steps:

[0021] Step B1: Obtain the trigger mode set by the user. The trigger mode includes at least a first trigger mode and a second trigger mode. The first trigger mode is triggered by a host computer signal, and the second trigger mode is triggered by an external signal.

[0022] Step B2: According to the current triggering mode, convert the trigger signal into a digital output signal and convert the digital voltage signal transmitted by the host computer into an analog output signal; the digital output signal is used to control the switching of the optical path of the beam for liquid crystal molecule orientation, and the analog output signal is used to control the phase of the beam;

[0023] Wherein, the voltage switching frequency corresponding to the first trigger mode is less than the voltage switching frequency corresponding to the second trigger mode; the external signal is the positioning signal of the substrate to which the liquid crystal molecule belongs, which is controlled by the third driver for displacement; and in the second trigger mode, before the analog output signal is output, the digital output signal that has completed the conversion in advance is subjected to a delay waiting process.

[0024] Furthermore, the first trigger mode is paired with the straight line mode and is used to align liquid crystal molecules on the substrate in a manner of parallel straight line trajectories spaced apart, and each straight line corresponds to the same voltage signal continuously; the second trigger mode is paired with the curve mode and is used to align liquid crystal molecules on the substrate in a manner of curved trajectories spaced apart, and during the alignment process, the angle formed by the two alignment points on the running trajectory and the center of the circle is the same fixed value.

[0025] To achieve the above objectives, the present invention also discloses a data processing method applied to the liquid crystal molecule arrangement system compatible with both straight lines and curves as described above, comprising:

[0026] Step S1: The main controller determines the task mode set by the user via the host computer. The task mode includes at least: straight line mode and curve mode; the curve type includes circle and spiral line.

[0027] Step S2: After obtaining the configuration information corresponding to the current task mode, the main controller executes the linkage control corresponding to the current task mode.

[0028] In the linear mode, the optical path is kept open by the acousto-optic crystal and linked with the first driver until a single linear line is recorded. During the process of the acousto-optic crystal switching to the off state, it is linked with the second driver to realize the phase-interval linear switching process.

[0029] In curve mode, the acousto-optic crystal controls the switching state of the acousto-optic crystal according to the positioning pulse signal of the third driver, and is linked with the first driver or the second driver to realize the switching of the phase-separated circles or the gradual change of the distance between each orientation point on the vortex line and the center of the circle; the third driver is used to drive the horizontal displacement stage to rotate, and the first driver and the second driver are used to drive the horizontal displacement stage to move in the X-axis and Y-axis directions, respectively.

[0030] The present invention has the following beneficial effects:

[0031] 1. The rotation function is integrated into the traditional three-axis displacement stage, laying the foundation for users to flexibly switch between different task modes.

[0032] 2. In different task modes, the linkage and timing control methods can be set differently to meet different accuracy requirements and ensure product yield and preparation efficiency in each task mode.

[0033] 3. It achieves the functions of two traditional systems in one system with two modes, improving resource utilization and reducing system deployment and maintenance costs.

[0034] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0035] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0036] Figure 1 This is a flowchart illustrating the steps implemented by processor A executing a computer program according to an embodiment of the present invention.

[0037] Figure 2 This is a flowchart illustrating the steps implemented by processor B executing a computer program according to an embodiment of the present invention. Detailed Implementation

[0038] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0039] Example 1

[0040] This embodiment discloses a liquid crystal molecule arrangement system compatible with both straight lines and curves, including:

[0041] The first driver is used to drive the horizontal displacement stage to move in the X-axis direction.

[0042] A second driver is used to drive the horizontal displacement stage to move in the Y-axis direction.

[0043] A third actuator for driving the rotation of the horizontal displacement stage.

[0044] A fourth actuator for adjusting the distance between the objective lens and the substrate in the Z-axis direction; the substrate is supported on the horizontal displacement stage, and the objective lens is deployed on the vertical displacement stage.

[0045] Acousto-optic crystals used to control optical circuit switches.

[0046] Electro-optic crystals used to control the phase change of a light beam.

[0047] The main controller establishes communication connections with the host computer and the first driver, second driver, third driver, fourth driver, acousto-optic crystal, and electro-optic crystal, respectively.

[0048] The main controller includes a memory A, a processor A, and a computer program stored in the memory A and capable of running on the processor A, such as... Figure 1 As shown, processor A executes the computer program to perform the following steps:

[0049] Step S1: Determine the task mode set by the user through the host computer. The task mode includes at least: straight line mode and curve mode; the curve type includes circle and spiral line.

[0050] Step S2: After obtaining the configuration information corresponding to the current task mode, execute the linkage control corresponding to the current task mode.

[0051] In linear mode, the acousto-optic crystal keeps the optical path in the open state and is linked with the first driver until a single linear line is recorded. During the process of the acousto-optic crystal switching to the off state, it is linked with the second driver to realize the phased linear switching process.

[0052] In curve mode, the acousto-optic crystal controls the switching state of the acousto-optic crystal according to the arrival pulse signal of the third driver, and is linked with the first driver or the second driver to realize the switching of phase-separated circles or the gradual change of the distance between each orientation point on the vortex line and the center of the circle.

[0053] Furthermore, the system in this embodiment also includes a rotary stage capable of linearly controlling the intensity of light incident on the substrate in a rotational manner, and a fifth driver for driving the rotary stage to position its rotation angle. The fifth driver establishes a communication connection with the main controller. The main controller is also used to maintain a constant light intensity output by the rotary stage in linear mode, and to control the rotary stage to linearly increase with the distance between the current orientation point and the center of the circle in curved mode. For example, a lower light intensity is used for processing the center of the circle, and a higher light intensity is used when processing the outer perimeter of the circle. The change from lower to higher light intensity is linear with the processing radius. Conversely, if the light intensity used at the center of the circle is too high, there is a risk of repeated erasure and rewriting; if the light intensity used at the outer perimeter of the circle is too low, there is a risk of insufficient orientation dose. This improves the product preparation yield and overall performance.

[0054] Preferably, the electro-optic crystal is used to control the phase change of the beam according to the received voltage. This allows the polarization state of the output beam to differ depending on the voltage received by the electro-optic crystal.

[0055] Preferably, the signals from the acousto-optic crystal and the electro-optic crystal originate from a square wave controller linked to the main controller. The square wave controller includes a memory B, a processor B, and a computer program stored in the memory B and executable on the processor, such as... Figure 2 As shown, when processor B executes the computer program, it performs the following steps:

[0056] Step B1: Obtain the trigger mode set by the user. The trigger mode includes a first trigger mode and a second trigger mode. The first trigger mode is triggered by a host computer signal, and the second trigger mode is triggered by an external signal.

[0057] Step B2: Based on the current triggering mode, convert the trigger signal into a digital output signal and convert the digital voltage signal transmitted by the host computer into an analog output signal; wherein, the digital output signal is used to control the switching of the optical path of the beam for aligning liquid crystal molecules, and the analog output signal is used to control the phase of the beam.

[0058] Wherein, the voltage switching frequency corresponding to the first trigger mode is less than the voltage switching frequency corresponding to the second trigger mode; the external signal is the positioning signal of the substrate to which the liquid crystal molecule belongs, which is controlled by the third driver for displacement; and in the second trigger mode, before the analog output signal is output, the digital output signal that has completed the conversion in advance is subjected to a delay waiting process.

[0059] Optionally, the above-mentioned delay waiting process can be implemented by the processor B in conjunction with the electronic control switch. That is, after the rising edge of the pulse signal used for each trigger arrives, the digital output signal is first switched to a low level to cut off the optical path, and at the same moment while waiting for the analog output signal to complete the conversion and output, the digital output signal is switched back to a high level. In the specific application scenario of the applicant in this case, the delay waiting time is generally less than or equal to 20 microseconds.

[0060] Preferably, the first triggering mode is paired with the linear mode to align liquid crystal molecules on the substrate using parallel linear trajectories spaced apart, with each linear trajectories corresponding to the same continuous voltage signal. Simultaneously, the second triggering mode is paired with the curved mode to align liquid crystal molecules on the substrate using curved trajectories, where the angle between the center of the circle and two consecutive alignment points on the trajectory is the same fixed value during the alignment process.

[0061] Typically, in the second trigger mode, the corresponding orientation points are distributed on alternately spaced circles or gradually changing vortex lines. Since the second trigger mode corresponds to high-frequency voltage switching, the controller can employ double-buffering technology to support it. Therefore, preferably, in the second trigger mode, during the process of reading voltage signal data packets from the host computer into the first buffer, the controller converts the discrete voltage signals between each orientation point in the previously read voltage data packets into corresponding analog output signals one by one according to the external trigger signal.

[0062] Furthermore, when the first trigger mode is applied to a linear alignment scenario, a redundant region can be extended around the actual alignment area of ​​the substrate. This redundant region is not equipped with liquid crystal. Preferably, this redundant region can be a blank area that supports the substrate displacement stage. The timing relationship between the analog output signal and the digital output signal can then be calculated based on the physical parameters of this redundant region. This allows the substrate to complete the switching between spaced-apart lines and the timing alignment between the analog and digital output signals before being displaced to the actual alignment area. In other words, timing alignment between the two output signals is achieved in advance within the aforementioned redundant region. Simultaneously, the redundant region ensures reliable alignment of the edge portion of the alignment area, thereby further improving overall performance.

[0063] In a specific application scenario, the system used to generate and focus a laser beam to write on a substrate includes a laser, an acousto-optic crystal, an electro-optic crystal, an objective lens, a shaping aperture, and a lens. Its motion control component includes:

[0064] During system operation, the debugging work before substrate writing includes:

[0065] In step S00, the horizontal displacement stage carries the substrate and moves it to the bottom of the ranging sensor. The marking height of different substrates and the center point of the substrate are found by the value fed back by the ranging sensor. This center point is also the center of the circle during the rotational orientation process.

[0066] The process of writing lines in the first trigger mode specifically includes the following steps:

[0067] Step S11: The horizontal displacement stage moves to the starting point of the scribing mode, the rotary stage is adjusted so that the light intensity of the orientation spot meets the requirements, and the square wave controller starts the first trigger mode.

[0068] Step S12: The host computer (the host computer refers to the host computer corresponding to the square wave controller; in this embodiment, the term "host computer" will continue to refer to the same concept and will not be elaborated further; preferably, the host computer can be integrated with the host computer corresponding to the main controller on the same physical computer device to reduce costs) sends the voltage value (±5V) corresponding to the n lines to the square wave controller and sends an on-light command, and the X-axis moves to process the width W to complete the writing of the n lines.

[0069] Step S13: The host computer sends a light-off command, and the Y-axis moves a distance of one spot size D in the positive direction.

[0070] Step S14: The host computer sends the voltage value (±5V) corresponding to the n+1th row to the square wave controller and sends the light-on command. The X-axis moves to process the width -W to complete the writing of the n+1th row.

[0071] Step S15: The host computer sends a light-off command, and the Y-axis moves a distance of one spot size D in the positive direction.

[0072] Step S16: Repeat the above steps until the writing is complete.

[0073] The linear inscription process corresponding to the second trigger mode specifically includes the following steps:

[0074] Step S21: The horizontal displacement stage moves to the starting point of the circular engraving mode, and the square wave controller activates the second trigger mode.

[0075] Step S22: The host computer sends the voltage values ​​written in the first two sets (16 lines, 360 voltage data per line, one set: 8*360=2880 voltage data) to the square wave controller.

[0076] Step S23: After the rotating shaft enabled by the third driver reaches a speed of 8 revolutions per second, the PEG output signal is activated (the signal is set to: 360 signals per revolution, and the angle between two adjacent orientation points and the center of the circle is 1 degree). This PEG output signal is the rotation angle arrival pulse signal.

[0077] Step S24: In order to make the product preparation efficiency close to that of the above linear mode, the Y-axis or X-axis runs at a speed of spot size D*8 per second, and the drive rotary table changes linearly with the distance between the current orientation point and the center of the circle.

[0078] Step S25: When the square wave controller receives the PEG pulse signal, it triggers the corresponding output voltage value of the electro-optic and acousto-optic ports. After triggering one set of data, the square wave controller requests the host computer to send the next set of data. At the receiving end, different voltages received by the electro-optic crystal result in different polarization states of the output beam.

[0079] Step S26: When the host computer sends all the phase data or reaches the fixed size radius, the circular marking is completed.

[0080] In this way, the linear writing mode adopts an "arch" shaped motion trajectory, and the circular writing mode adopts a continuous PEG method, which greatly improves production efficiency.

[0081] Example 2

[0082] This invention discloses a data processing method applied to the liquid crystal molecule arrangement system compatible with both straight lines and curves disclosed in the above embodiments, comprising the following steps:

[0083] Step S1: The main controller determines the task mode set by the user through the host computer. The task mode includes at least: straight line mode and curve mode; the curve type includes circle and spiral line.

[0084] Step S2: After obtaining the configuration information corresponding to the current task mode, the main controller executes the linkage control corresponding to the current task mode.

[0085] In linear mode, the optical path is kept open by the acousto-optic crystal and linked with the first driver until a single linear line is recorded. During the process of the acousto-optic crystal switching to the off state, it is linked with the second driver to realize the phased linear switching process.

[0086] In curve mode, the acousto-optic crystal controls the switching state of the acousto-optic crystal according to the positioning pulse signal of the third driver, and is linked with the first driver or the second driver to realize the switching of the phase-separated circles or the gradual change of the distance between each orientation point on the vortex line and the center of the circle; the third driver is used to drive the horizontal displacement stage to rotate, and the first driver and the second driver are respectively used to drive the horizontal displacement stage to move in the X-axis and Y-axis directions.

[0087] Furthermore, when the application system also includes the aforementioned rotary table and fifth drive, the method of this embodiment further includes:

[0088] In linear mode, the main controller maintains the light intensity output by the rotary table constant; in curved mode, it controls the rotary table to change linearly with the distance between the current orientation point and the center of the circle.

[0089] Optionally, the electro-optic crystal controls the phase change of the light beam according to the received voltage.

[0090] Preferably, the signals from the acousto-optic crystal and the electro-optic crystal originate from a square wave controller linked to the main controller. The square wave controller includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it performs the following steps:

[0091] Step B1: Obtain the trigger mode set by the user. The trigger mode includes at least a first trigger mode and a second trigger mode. The first trigger mode is triggered by a host computer signal, and the second trigger mode is triggered by an external signal. Typically, conventional touch modes also include self-test modes, which are existing technologies well-known to those skilled in the art and will not be elaborated upon.

[0092] Step B2: Based on the current triggering mode, convert the trigger signal into a digital output signal and convert the digital voltage signal transmitted by the host computer into an analog output signal; the digital output signal is used to control the switching of the optical path of the beam for liquid crystal molecule orientation, and the analog output signal is used to control the phase of the beam.

[0093] Wherein, the voltage switching frequency corresponding to the first trigger mode is less than the voltage switching frequency corresponding to the second trigger mode; the external signal is the positioning signal of the substrate to which the liquid crystal molecule belongs, which is controlled by the third driver for displacement; and in the second trigger mode, before the analog output signal is output, the digital output signal that has completed the conversion in advance is subjected to a delay waiting process.

[0094] Furthermore, the first trigger mode is paired with the straight line mode and is used to align liquid crystal molecules on the substrate in a manner of parallel straight line trajectories spaced apart, and each straight line corresponds to the same voltage signal continuously; the second trigger mode is paired with the curve mode and is used to align liquid crystal molecules on the substrate in a manner of curved trajectories spaced apart, and during the alignment process, the angle formed by the two alignment points on the running trajectory and the center of the circle is the same fixed value.

[0095] In summary, the methods and systems disclosed in the embodiments of the present invention have at least the following beneficial effects:

[0096] 1. The rotation function is integrated into the traditional three-axis displacement stage, laying the foundation for users to flexibly switch between different task modes.

[0097] 2. In different task modes, the linkage and timing control methods can be set differently to meet different accuracy requirements and ensure product yield and preparation efficiency in each task mode.

[0098] 3. It achieves the functions of two traditional systems in one system with two modes, improving resource utilization and reducing system deployment and maintenance costs.

[0099] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A liquid crystal molecule arrangement system compatible with both straight lines and curves, characterized in that, include: First driver for driving the horizontal displacement stage to move in the X-axis direction; A second driver for driving the horizontal displacement stage to move in the Y-axis direction; A third actuator for driving the horizontal displacement stage to rotate; A fourth actuator for adjusting the Z-axis spacing between the objective lens and the substrate; the substrate is supported on the horizontal displacement stage, and the objective lens is deployed on the vertical displacement stage. Acousto-optic crystals used to control optical circuit switches; Electro-optic crystals used to control the phase change of a beam; A main controller that establishes communication connections with the host computer and the first driver, second driver, third driver, fourth driver, acousto-optic crystal, and electro-optic crystal, respectively; The main controller includes a memory, a processor, and a computer program stored in the memory and executable on the processor. The processor executes the computer program to perform the following steps: Step S1: Determine the task mode set by the user through the host computer. The task mode includes at least: straight line mode and curve mode; the curve type includes circle and spiral line. Step S2: After obtaining the configuration information corresponding to the current task mode, execute the linkage control corresponding to the current task mode; In linear mode, the acousto-optic crystal keeps the optical path in the open state and is linked with the first driver until a single linear line is recorded. During the process of the acousto-optic crystal switching to the off state, it is linked with the second driver to realize the phased linear switching process. In curve mode, the acousto-optic crystal controls the switching state of the acousto-optic crystal according to the arrival pulse signal of the third driver; and it is linked with the first driver or the second driver to realize the switching of the phase-separated circles or the gradual change of the distance between each orientation point on the vortex line and the center of the circle.

2. The system according to claim 1, characterized in that, It also includes a rotating stage that can control the linear change of light intensity incident on the substrate in a rotating manner, and a fifth driver for driving the rotating stage to position the rotation angle, the fifth driver establishing a communication connection with the main controller; The main controller is also used to: maintain the light intensity output by the rotary table unchanged in linear mode; and control the rotary table to change linearly with the distance between the current orientation point and the center of the circle in curved mode.

3. The system according to claim 2, characterized in that, The electro-optic crystal is used to control the phase change of the light beam according to the received voltage.

4. The system according to claim 3, characterized in that, The signals from the acousto-optic crystal and the electro-optic crystal originate from a square wave controller linked to the main controller. The square wave controller includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it performs the following steps: Step B1: Obtain the trigger mode set by the user. The trigger mode includes at least a first trigger mode and a second trigger mode. The first trigger mode is triggered by a host computer signal, and the second trigger mode is triggered by an external signal. Step B2: According to the current triggering mode, convert the trigger signal into a digital output signal and convert the digital voltage signal transmitted by the host computer into an analog output signal; the digital output signal is used to control the switching of the optical path of the beam for liquid crystal molecule orientation, and the analog output signal is used to control the phase of the beam; Wherein, the voltage switching frequency corresponding to the first trigger mode is less than the voltage switching frequency corresponding to the second trigger mode; the external signal is the positioning signal of the substrate to which the liquid crystal molecule belongs, which is controlled by the third driver for displacement; and in the second trigger mode, before the analog output signal is output, the digital output signal that has completed the conversion in advance is subjected to a delay waiting process. Furthermore, the first trigger mode is paired with the straight line mode and is used to align liquid crystal molecules on the substrate in a manner of parallel straight line trajectories spaced apart, and each straight line corresponds to the same voltage signal continuously; the second trigger mode is paired with the curve mode and is used to align liquid crystal molecules on the substrate in a manner of curved trajectories spaced apart, and during the alignment process, the angle formed by the two alignment points on the running trajectory and the center of the circle is the same fixed value.

5. A data processing method, applied to a liquid crystal molecule arrangement system compatible with both straight lines and curves as described in any one of claims 1 to 4, characterized in that, include: Step S1: The main controller determines the task mode set by the user via the host computer. The task mode includes at least: straight line mode and curve mode; the curve type includes circle and spiral line. Step S2: After obtaining the configuration information corresponding to the current task mode, the main controller executes the linkage control corresponding to the current task mode. In the linear mode, the optical path is kept open by the acousto-optic crystal and linked with the first driver until a single linear line is recorded. During the process of the acousto-optic crystal switching to the off state, it is linked with the second driver to realize the phase-interval linear switching process. In curve mode, the acousto-optic crystal controls the switching state of the acousto-optic crystal according to the positioning pulse signal of the third driver, and is linked with the first driver or the second driver to realize the switching of the phase-separated circles or the gradual change of the distance between each orientation point on the vortex line and the center of the circle; the third driver is used to drive the horizontal displacement stage to rotate, and the first driver and the second driver are used to drive the horizontal displacement stage to move in the X-axis and Y-axis directions, respectively.

6. The method according to claim 5, characterized in that, The system further includes a rotating stage capable of linearly controlling the intensity of light incident on the substrate in a rotating manner, and a fifth driver for driving the rotating stage to position the rotation angle, the fifth driver establishing a communication connection with the main controller; the method further includes: In linear mode, the main controller maintains the light intensity output by the rotary table constant; in curved mode, it controls the rotary table to change linearly with the distance between the current orientation point and the center of the circle.

7. The method according to claim 6, characterized in that, The electro-optic crystal controls the phase change of the light beam according to the received voltage.

8. The method according to claim 7, characterized in that, The signals from the acousto-optic crystal and the electro-optic crystal originate from a square wave controller linked to the main controller. The square wave controller includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it performs the following steps: Step B1: Obtain the trigger mode set by the user. The trigger mode includes at least a first trigger mode and a second trigger mode. The first trigger mode is triggered by a host computer signal, and the second trigger mode is triggered by an external signal. Step B2: According to the current triggering mode, convert the trigger signal into a digital output signal and convert the digital voltage signal transmitted by the host computer into an analog output signal; the digital output signal is used to control the switching of the optical path of the beam for liquid crystal molecule orientation, and the analog output signal is used to control the phase of the beam; Wherein, the voltage switching frequency corresponding to the first trigger mode is less than the voltage switching frequency corresponding to the second trigger mode; the external signal is the positioning signal of the substrate to which the liquid crystal molecule belongs, which is controlled by the third driver for displacement; and in the second trigger mode, before the analog output signal is output, the digital output signal that has completed the conversion in advance is subjected to a delay waiting process. Furthermore, the first trigger mode is paired with the straight line mode and is used to align liquid crystal molecules on the substrate in a manner of parallel straight line trajectories spaced apart, and each straight line corresponds to the same voltage signal continuously; the second trigger mode is paired with the curve mode and is used to align liquid crystal molecules on the substrate in a manner of curved trajectories spaced apart, and during the alignment process, the angle formed by the two alignment points on the running trajectory and the center of the circle is the same fixed value.

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