CN-121995679-A - Phased array driving control method, time sequence controller, phased array driving method and driving system

CN121995679ACN 121995679 ACN121995679 ACN 121995679ACN-121995679-A

Abstract

The disclosure provides a phased array driving control method, a time sequence controller, a phased array driving method and a phased array driving system, belongs to the technical field of phased arrays, and can solve the problems of low beam flexibility and low scanning speed of an existing phased array antenna. The phased array comprises at least one phase adjustment unit, the phase adjustment unit comprises a plurality of grid lines and a plurality of data lines, the grid lines and the data lines are crossed to define a plurality of phase shift areas, each phase shift area is provided with a switch element and a phase shift unit, the switch elements of the same row are connected with the same grid line, the switch elements of the same column are connected with the same data line, the control method comprises the steps of controlling each phase adjustment unit, controlling any phase adjustment unit comprises the step of controlling the phase shift units to be written with driving voltages row by row, and controlling any row of phase shift units to be written with driving voltages, and comprises the step of controlling a grid driver to provide scanning signals for the grid lines in response to the driving voltages written in by the data lines.

Inventors

FU BO
ZHONG WENJIE
WANG YONGHUI
LIU XIANTAO
QU FENG

Assignees

北京京东方光电科技有限公司
京东方科技集团股份有限公司

Dates

Publication Date: 20260508
Application Date: 20241108

Claims (12)

1. The driving control method of the phased array comprises at least one phase adjustment unit, wherein the phase adjustment unit comprises a plurality of grid lines and a plurality of data lines, a plurality of phase shift areas are defined by the crossing of the grid lines and the data lines, each phase shift area is provided with a switching element and a phase shift unit, the switching elements positioned in the same row are connected with the same grid line, and the switching elements positioned in the same column are connected with the same data line; the control method comprises the steps of controlling each phase adjustment unit; Controlling any one of the phase adjustment units includes controlling the phase shift unit to be written with a driving voltage row by row; Controlling the phase shift cells of any one row to be written with a drive voltage includes controlling a gate driver to provide a scan signal to the gate line in response to the data line being written with the drive voltage.
2. The drive control method of a phased array according to claim 1, wherein before the control phase shift unit is written to the drive voltage row by row, further comprising: In response to the frame driving data, the frame driving data is transferred row by row to the source driver to cause the source driver to convert the received driving data into a driving voltage.
3. The drive control method of a phased array according to claim 2, wherein before transmitting the frame drive data row by row to the source driver in response to the frame drive data, further comprising: and receiving the frame driving data according to an LVDS interface protocol through an LVDS interface.
4. The drive control method of a phased array according to claim 3, wherein the data line is written with the drive voltage, comprising: controlling a TP1 signal of the source driver to be at a working level and lasting for a first preset time, so that the source driver receives the driving data and latches the driving data in a data register of the source driver; After the TP1 signal keeps the working level for a first preset time, the TP1 signal is controlled to be at a non-working level, driving data in the data register are transmitted to a digital-to-analog converter, and after the driving data are converted into the driving voltage through the digital-to-analog converter, the driving voltage is written into the data line.
5. The drive control method of the phased array according to claim 4, wherein the controlling the gate driver to supply the scan signal to the gate line includes: And controlling the CPV signal of the gate driver to be at an operating level for a second preset time, and controlling the OE signal of the gate driver to be at an operating level for a third preset time so as to provide a scanning signal for the gate line, so that the switching element connected with the gate line is turned on for the third preset time.
6. The drive control method of a phased array according to any one of claims 1 to 5, wherein the phased array includes a plurality of the phase adjustment units; the controlling of each of the phase adjustment units includes: The phase shift units in the phase adjustment units are synchronously controlled to be written with driving voltages row by row.
7. A timing controller for controlling the driving of a phased array using the control method of any one of claims 1 to 6.
8. The driving method of the phased array comprises at least one phase adjusting unit, wherein the phase adjusting unit comprises a plurality of grid lines and a plurality of data lines, a plurality of phase shifting areas are defined by the crossing of the grid lines and the data lines, each phase shifting area is provided with a switching element and a phase shifting unit, the switching elements positioned in the same row are connected with the same grid line, and the switching elements positioned in the same column are connected with the same data line; Wherein the driving method includes: The time schedule controller receives frame driving data and transmits the frame driving data to the source driver row by row; The source driver converts the received driving data into corresponding driving voltages and writes the driving voltages into the data lines; The grid driver responds to a first control signal, provides a scanning signal for the grid line so as to enable the switching element to be opened, controls the phase shifting unit to shift the phase of the received microwave signal, and the first control signal is a control signal output by the time sequence controller after the data line is written with the driving voltage.
9. The method of driving a phased array of claim 8, wherein the source driver converts the received driving data into corresponding driving voltages, comprising: the driving data is converted into corresponding driving voltages based on gamma reference voltages provided by a gamma voltage module.
10. The method of driving a phased array of claim 9, wherein the source driver converts the received driving data into corresponding driving voltages and writes the data lines, comprising: the TP1 signal of the source driver is set to be at a working level and lasts for a first preset time, and the source driver receives the driving data and is latched in a data register of the source driver; And after the TP1 signal keeps the working level for a first preset time, the working level is set as the non-working level, the source driver transmits the driving data in the data register to the digital-to-analog converter, and the driving voltage is written into the data line after the driving data is converted into the driving voltage by the digital-to-analog converter.
11. The method of driving a phased array of claim 10, wherein the gate driver providing a scan signal to the gate line to turn on the switching element in response to a first control signal, comprising: The CPV signal of the grid driver is set to be at a working level and lasts for a second preset time, the OE signal is set to be at a working level and lasts for a third preset time, the grid driver provides scanning signals for the grid lines, and the switching element connected with the grid lines is opened and lasts for the third preset time.
12. A phased array drive system employing the drive method of any one of claims 8-11 to effect drive of the phased array.

Description

Phased array driving control method, time sequence controller, phased array driving method and driving system Technical Field The disclosure belongs to the technical field of phased arrays, and particularly relates to a phased array driving control method, a time sequence controller, a phased array driving method and a phased array driving system. Background The liquid crystal phased array is an electrically-controlled programmable optical phase control device based on liquid crystal and has the advantages of small volume, light weight, low power consumption, easiness in control and the like. The liquid crystal phased array accurately controls beam steering through modulating the phase of an incident beam, has the advantages of wide band, wide double-refractive index range, small volume, low power consumption, wide field of view, easiness in microelectronic circuit control and the like, and is widely applied to the fields of laser radars, antennas, high-energy lasers and the like. The liquid crystal is a uniaxial crystal, the long axis of the liquid crystal molecule has fixed orientation, the orientation of the liquid crystal molecule can deflect under the action of an external electric field, and the dielectric constant of the liquid crystal molecule also changes. The liquid crystal phased array is a phase modulation device which uses liquid crystal as a phase modulation material and combines an electrically-controlled programmable electrode array, wherein each electrode and the liquid crystal in the area controlled by the electrode form a controllable unit. When different driving voltages are applied to each controllable unit, the orientation of the liquid crystal molecules is deflected to different degrees, so that the effective refractive index of the liquid crystal molecules is affected, the light beams incident to the device are subjected to phase modulation, the emergent direction of the light beams is changed, far-field interference is generated in the appointed direction, and the light beam deflection is realized. In short, the liquid crystal phased array has the advantages of wide band, wide birefringence range, high damage threshold, small volume, low power consumption, wide field of view, easiness in control by a microelectronic circuit and the like, and has wide application prospects in various fields, such as satellite communication in motion, laser radar and the like. The demand of the communication-in-motion antenna terminal bursts, however, the liquid crystal phased array is lack of commercial liquid crystal phased arrays which can be applied to the communication-in-motion antenna and can flexibly and rapidly switch beams due to the wide technical range, imperfect industrial chain, high technical difficulty and imperfect design especially in the aspect of a driving system related to the liquid crystal phased array. Disclosure of Invention The invention aims to at least solve one of the technical problems in the prior art, and in one aspect, the invention provides a driving control method of a phased array, which comprises at least one phase adjustment unit, wherein the phase adjustment unit comprises a plurality of grid lines and a plurality of data lines, the grid lines and the data lines are crossed to define a plurality of phase shift areas, each phase shift area is provided with a switching element and a phase shift unit, the switching elements positioned in the same row are connected with the same grid line, the switching elements positioned in the same column are connected with the same data line, the control method comprises the steps of controlling each phase adjustment unit, controlling any phase adjustment unit comprises the step of controlling the phase shift units to be written with driving voltages row by row, and controlling any row of the phase shift units to be written with driving voltages comprises the step of controlling the grid driver to provide scanning signals for the grid lines in response to the step of writing the driving voltages into the data lines. In some embodiments, before the controlling the phase shift unit is written to the driving voltage row by row, the method further includes: In response to frame driving data, the frame driving data is transferred to the source driver row by row to cause the source driver to convert the received driving data into driving voltages. In some embodiments, before transmitting the frame driving data to the source driver row by row in response to the frame driving data, further comprising: and receiving the frame driving data according to an LVDS interface protocol through an LVDS interface. In some embodiments, the data line is written to the driving voltage, comprising: controlling a TP1 signal of the source driver to be at a working level and lasting for a first preset time, so that the source driver receives the driving data and latches the driving data in a data register of the source driver; After the TP1 signal keeps t