Microdisplay Dimming System and Dimming Method

Abstract

The present application provides a microdisplay dimming system and a dimming method, relating to the field of display technologies. The system includes: a dimming configuration module, an encoding and gating enable module, a dimming module, and a pixel circuit module; the encoding and gating enable module is respectively connected to the dimming configuration module and the pixel circuit module; the dimming module is respectively connected to the dimming configuration module and the pixel circuit module; the pixel circuit module includes: a row driving unit, a column driving unit, and pixel circuits; the pixel circuits include: a plurality of sub-pixel units; the encoding and gating enable module is used to generate deformed data and gating enable signals; the dimming module is used to generate dimming signals according to dimming commands; the pixel circuit module turns on target sub-pixel units according to the received gating enable signals; the pixel circuit module controls the display materials corresponding to the respective target sub-pixel units to perform display according to the dimming signals. This method can avoid problems such as color deviation and uneven gray-scale transition, and improve the dimming effect.

Description

Technical Field

[0001] The present application relates to the field of display technologies, and more particularly, to a microdisplay dimming system and a dimming method. Background Art

[0002] With the continuous development of display technologies, the function of adjusting display brightness will be widely applied to various display screens, bringing more convenience to people's lives and work. By adjusting the display brightness of a display chip, the brightness of the display screen can be made more in line with the visual habits of the human eye, reducing eye fatigue and discomfort, and improving the user's viewing experience.

[0003] Traditional dimming systems achieve the adjustment of display brightness by adding a constant current DC / DC (Direct Current / Direct Current) converter that can quickly control current on the basis of a DC constant voltage source, or by adding a pulse width modulation (PWM) chopper switch at the output of a constant current power supply.

[0004] However, when dimming is performed using the above methods, problems such as color deviation and uneven gray-scale transition will occur, resulting in poor adjustment effects. Summary of the Invention

[0005] The purpose of the present application is to provide a microdisplay dimming system and a dimming method for improving the dimming effect of the dimming system in view of the above deficiencies in the prior art.

[0006] To achieve the above purpose, the technical solutions adopted in the embodiments of the present application are as follows:

[0007] In a first aspect, an embodiment of the present application provides a microdisplay dimming system, including: a dimming configuration module, an encoding and strobe enabling module, a dimming module, and a pixel circuit module; the encoding and strobe enabling module is connected to the dimming configuration module and is also connected to the pixel circuit module; the dimming module is respectively connected to the dimming configuration module and the pixel circuit module;

[0008] The pixel circuit module includes: a row driving unit, a column driving unit, and a pixel circuit; the pixel circuit includes: a plurality of sub-pixel units;

[0009] The dimming configuration module is configured to receive a dimming command; the dimming command is used to indicate a dimming mode or brightness adjustment information;

[0010] The encoding and strobe enabling module is configured to perform encoding processing on the input video source data according to the dimming command to generate deformed data and a strobe enabling signal corresponding to the deformed data;

[0011] The dimming module is used to generate a dimming signal according to the dimming command, and the dimming signal includes: a grayscale quantization refresh signal and a global co-control pulse signal;

[0012] The pixel circuit module is used to turn on at least one target sub-pixel unit among a plurality of sub-pixel units through the row driving unit and the column driving unit according to the received strobe enable signal;

[0013] The pixel circuit module is further used to control the display driving circuit corresponding to each target sub-pixel unit to turn on according to the dimming signal, so as to drive the display material corresponding to the target sub-pixel unit to display.

[0014] Optionally, it further includes: a dimming strategy module; the dimming strategy module is respectively connected to the dimming configuration module and the encoding and strobe enable module;

[0015] The dimming strategy module is used to identify the dimming command and determine the dimming strategy indicated by the dimming command;

[0016] The encoding and strobe enable module is specifically used to perform encoding processing on the video source data according to the dimming strategy, generate deformed data and a strobe enable signal corresponding to the deformed data.

[0017] Optionally, the dimming module is specifically used to generate a grayscale quantization refresh signal and a global co-control pulse signal according to the dimming strategy, and the global co-control pulse signal includes: pulse signal duty cycle and signal flip frequency; the grayscale quantization refresh signal is used to control the voltage magnitude to complete the grayscale conversion of the target sub-pixel unit; the global co-control pulse signal is used to control the display duration of the display material of the target sub-pixel unit.

[0018] Optionally, the row driving unit is connected to one end of a first switch component in each sub-pixel unit; the other end of the first switch component is respectively connected to one end of a pixel capacitor and the first end of a second switch component;

[0019] The second end of the second switch component is connected to the first end of a third switch component;

[0020] The second end of the third switch component is connected to one end of the display material;

[0021] The column driving unit is connected to the third end of the second switch component in each sub-pixel unit.

[0022] Optionally, the row driving unit is used to determine the target row to be turned on currently according to the row driving signal in the strobe enable signal;

[0023] The column driving unit is configured to turn on each target sub-pixel unit in the target row according to the column driving signal in the strobe enable signal, charge the pixel capacitors of the target sub-pixel units through the gray-scale quantization refresh signal, and when the charging voltage of the pixel capacitor reaches a preset voltage, control the conduction or cut-off of the third switching component in each target sub-pixel unit through the global co-control pulse signal, so as to drive the display materials corresponding to the target sub-pixel units to display.

[0024] Optionally, if the dimming command indicates a dimming mode, the dimming strategy module determines a dimming strategy corresponding to the dimming mode according to the dimming mode, and preprocesses the pixel circuit module according to the dimming strategy; the dimming modes include: maintaining the resolution and reducing the refresh rate or maintaining the refresh rate and reducing the resolution.

[0025] Optionally, if the dimming mode is to maintain the resolution and reduce the refresh rate, the dimming strategy module determines the number of sub-frames to be divided for each frame and the number of rows and columns to be displayed in each sub-frame in the pixel circuit module according to the original resolution, the original refresh rate, and the refresh rate to be displayed.

[0026] Optionally, if the dimming mode is to maintain the refresh rate and reduce the resolution, the dimming strategy module divides the multiple sub-pixel units into regions according to the original resolution and the resolution to be displayed, obtains multiple groups of pixel units, and determines the number of sub-pixel units to be displayed in each group of pixel units.

[0027] Optionally, the dimming module is specifically configured to determine a gray-scale quantization refresh signal according to the dimming strategy;

[0028] Determine differential pressure information according to the gray-scale quantization refresh signal;

[0029] Determine the pulse signal duty ratio in the global co-control pulse signal according to the differential pressure information and the brightness adjustment information.

[0030] In a second aspect, an embodiment of the present application further provides a dimming method, which is applied to the pixel circuit module in the micro-display dimming system described in the first aspect above. The method includes:

[0031] Receiving a strobe enable signal and a dimming signal; the dimming signal includes: a gray-scale quantization refresh signal and a global co-control pulse signal;

[0032] Turn on the target sub-pixel units in the multiple sub-pixel units through the row driving unit and the column driving unit according to the strobe enable signal;

[0033] Control the corresponding display driving circuit of the target sub-pixel unit to conduct according to the dimming signal, so as to drive the display material corresponding to the target sub-pixel unit to display.

[0034] The beneficial effects of this application are:

[0035] This application provides a microdisplay dimming system and a dimming method. The system includes: a dimming configuration module, an encoding and strobe enabling module, a dimming module, and a pixel circuit module; the encoding and strobe enabling module is connected to the dimming configuration module, and the encoding and strobe enabling module is connected to the pixel circuit module; the dimming module is respectively connected to the dimming configuration module and the pixel circuit module; the pixel circuit module includes: a row driving unit, a column driving unit, and a pixel circuit; the pixel circuit includes: a plurality of sub-pixel units; the dimming configuration module is used to receive a dimming command; the dimming command is used to indicate a dimming mode or brightness adjustment information; the encoding and strobe enabling module is used to encode the input video source data according to the dimming command to generate deformed data and a strobe enabling signal corresponding to the deformed data; the dimming module is used to generate a dimming signal according to the dimming command, and the dimming signal includes: a gray-scale quantization refresh signal and a global co-control pulse signal; the pixel circuit module is used to conduct at least one target sub-pixel unit among the plurality of sub-pixel units through the row driving unit and the column driving unit according to the received strobe enabling signal; the pixel circuit module is further used to control the corresponding display driving circuit of each target sub-pixel unit to conduct according to the dimming signal, so as to drive the display material corresponding to the target sub-pixel unit to display. By introducing the dimming configuration module and the dimming module in this system, the dimming module can generate the required dimming signal for dimming control according to the dimming command input by the dimming configuration module. Among them, by combining the gray-scale quantization refresh signal and the global co-control pulse signal as the dimming signal, the gray-scale quantization refresh signal is used to control the voltage magnitude to complete gray-scale conversion, and the global co-control pulse signal is used as a global signal to control the display duration of the display material to enhance or weaken the overall display brightness, so as to adjust the display screen brightness of the display to the human eye visual comfort zone, which not only ensures that the color of the display screen does not deviate, but also makes the gray-scale transition more uniform and improves the display efficiency. Brief Description of the Drawings

[0036] In order to more clearly illustrate the technical solutions of the embodiments of this application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0037] Figure 1 It is a schematic diagram of the architecture of a microdisplay dimming system provided by an embodiment of this application;

[0038] Figure 2 Schematic diagram of another microdisplay dimming system provided by an embodiment of the present application;

[0039] Figure 3 Dimming timing diagram provided by an embodiment of the present application;

[0040] Figure 4 Schematic diagram of the pixel circuit structure of a microdisplay dimming system provided by an embodiment of the present application;

[0041] Figure 5 Schematic diagram of the working principle in the scenario of maintaining resolution and reducing refresh rate provided by an embodiment of the present application;

[0042] Figure 6 Schematic diagram of the working principle in the scenario of maintaining refresh rate and reducing resolution provided by an embodiment of the present application;

[0043] Figure 7 Schematic diagram of the dimming effect provided by an embodiment of the present application;

[0044] Figure 8 Schematic diagram of the pixel circuit structure of another microdisplay dimming system provided by an embodiment of the present application;

[0045] Figure 9 Schematic diagram of the pixel circuit structure of yet another microdisplay dimming system provided by an embodiment of the present application;

[0046] Figure 10 Schematic diagram of the flow of a dimming method provided by an embodiment of the present application;

[0047] Figure 11 Schematic diagram of the structure of an electronic device provided by an embodiment of the present application. Detailed implementation manners

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. It should be understood that the accompanying drawings in the present application are only for the purposes of illustration and description, and are not used to limit the protection scope of the present application. In addition, it should be understood that the schematic drawings are not drawn to actual scale. The flowcharts used in the present application illustrate the operations implemented according to some embodiments of the present application. It should be understood that the operations in the flowchart may not be implemented in sequence, and the steps without logical context relationships may be reversed in order or implemented simultaneously. In addition, those skilled in the art may add one or more other operations to the flowchart or remove one or more operations from the flowchart under the guidance of the content of the present application.

[0049] In addition, the described embodiments are only a part of the embodiments of the present application, rather than all embodiments. The components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents the selected embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0050] It should be noted that the term "including" will be used in the embodiments of the present application to indicate the existence of the features stated thereafter, but does not exclude the addition of other features.

[0051] Figure 1 The figure is a schematic diagram of the architecture of a microdisplay dimming system provided for the embodiments of the present application. The system includes: a dimming configuration module, an encoding and strobe enabling module, a dimming module, and a pixel circuit module; the encoding and strobe enabling module is connected to the dimming configuration module, and the encoding and strobe enabling module is connected to the pixel circuit module; the dimming module is respectively connected to the dimming configuration module and the pixel circuit module.

[0052] The pixel circuit module includes: a row driving unit, a column driving unit, and a pixel circuit; the pixel circuit includes: a plurality of sub-pixel units.

[0053] The pixel circuit module may include a plurality of pixel circuits, and each pixel circuit may include a plurality of sub-pixel units. Therefore, the plurality of sub-pixel units in the pixel circuit module may be composed of a plurality of sub-pixel units under one pixel, or may be composed of a plurality of sub-pixel units under a plurality of pixels.

[0054] That is to say, the plurality of sub-pixel units included in the pixel circuit module are not necessarily a plurality of sub-pixel units under one pixel, and may also be a plurality of sub-pixel units under a plurality of pixels.

[0055] Among them, the plurality of sub-pixel units are arranged in an array form to form a structure of multiple rows and multiple columns. The row driving unit and the column driving unit are respectively connected to each sub-pixel unit. The row driving unit is used to select a target row from multiple rows as the currently to-be-controlled row, and the column driving unit is used to turn on each column sub-pixel unit in the currently selected target row.

[0056] The dimming configuration module is used to receive a dimming command; the dimming command is used to indicate a dimming mode or brightness adjustment information.

[0057] The dimming configuration module is used to receive the dimming commands automatically sent by the host computer or the dimming commands manually input by the user. The dimming commands can include different forms of content. In the automatic mode, the dimming commands can include brightness adjustment information, which is used to indicate the current brightness information of the display and the brightness information to be adjusted to. In the manual mode, the dimming commands can include dimming mode information and brightness adjustment information. Among them, the dimming mode information is used to indicate whether to keep the refresh rate and reduce the resolution or keep the resolution and reduce the refresh rate during dimming.

[0058] It is worth noting that the refresh rate refers to the number of times the display refreshes the image per second, usually measured in Hertz (Hz). A high refresh rate means that more images can be displayed per second, making the picture smoother and reducing latency and blurring.

[0059] The resolution refers to the number of pixels that the display can show, usually expressed in the form of width multiplied by height (such as 1920x1080, that is, 1080p). A high resolution means that more details and clarity can be shown on the screen.

[0060] Keeping the refresh rate and reducing the resolution means that when adjusting the display settings, in order to maintain a high refresh rate, the resolution is selected to be reduced. Keeping the refresh rate and reducing the resolution is a trade-off choice under hardware performance limitations. It is suitable for scenarios that require fast response and smooth pictures, but may sacrifice some clarity and detail performance of the picture.

[0061] Keeping the resolution and reducing the refresh rate means that when adjusting the display settings, in order to maintain a high resolution, the refresh rate is selected to be reduced. Keeping the resolution and reducing the refresh rate is a trade-off choice when high resolution needs to be maintained. It is suitable for scenarios with extremely high requirements for image clarity and details, but may sacrifice some smoothness and visual comfort of the picture.

[0062] The encoding and strobe enable module is used to perform encoding processing on the input video source data according to the dimming command, generating the deformed data and the strobe enable signal corresponding to the deformed data.

[0063] The video source data can be obtained by processing the video signal and contains the pixel data of the image or video. The video signal can be acquired by an external source (such as a camera or a video file), and these signals may be analog (such as composite analog video signal, S-video signal) or digital (such as RGB component video, network video, etc.).

[0064] The video source data indicates the content that each pixel finally needs to display, including the color, component value, etc. of the pixel.

[0065] The encoding and strobe enable module can perform encoding processing on the input video source data according to the dimming strategy corresponding to the dimming command, and output the deformed data and the strobe enable signal corresponding to the deformed data.

[0066] The strobe enable signal includes: a row strobe signal and a column strobe signal. The strobe enable signal is output to the pixel circuit module, so that the pixel circuit module uses the row driving unit and the column driving unit to control the display of the sub-pixel units according to the strobe enable signal.

[0067] Among them, the reason for deforming the video source data is that different displays and display methods have specific requirements for the data format, and the video source data needs to be processed into a format that meets the display requirements.

[0068] The dimming module is used to generate a dimming signal according to the dimming command. The dimming signal includes: a grayscale quantization refresh signal and a global co-control pulse signal.

[0069] In this embodiment, the dimming module can generate a dimming signal according to the dimming command, and the generated dimming signal is output to the pixel circuit module for digital-to-analog conversion to obtain an analog voltage, so as to cooperate with the control of the display of the sub-pixel units selected by the row driving unit and the column driving unit.

[0070] Optionally, the dimming signal may include a grayscale quantization refresh signal and a global co-control pulse signal. By combining the grayscale quantization refresh signal and the global co-control pulse signal, different driving level combinations can be achieved. Among them, the grayscale quantization refresh signal is used to control the voltage magnitude to complete grayscale conversion, and the global co-control pulse signal, as a global signal, enhances or weakens the overall display brightness by increasing or decreasing the pulse width, that is, the display duration of the display material.

[0071] The pixel circuit module is used to conduct at least one target sub-pixel unit among a plurality of sub-pixel units through the row driving unit and the column driving unit according to the received strobe enable signal.

[0072] The pixel circuit module is used to complete digital-to-analog conversion of the column data in the column driving unit to obtain an analog voltage, and charge the pixel capacitors of the sub-pixel unit R, the sub-pixel unit G, and the sub-pixel unit B at the corresponding column positions. Since the column strobe signal controls all the sub-pixel units in a column, and combined with the row selection control of the row strobe signal, independent control of each sub-pixel unit can be achieved to complete display and refresh.

[0073] Among them, the row strobe signal can be a signal sequence, and the signal sequence indicates the control order of the row sub-pixel units. The column strobe signal may include digital voltage signals corresponding to each sub-pixel unit.

[0074] The row driving unit is used to determine the target row to be controlled currently according to the row strobe signal; the column driving unit is used to turn on each sub-pixel unit in the target row in time-sharing manner according to the column strobe signal. The sub-pixel units controlled to be turned on by the row driving unit and the column driving unit are used as the target sub-pixel units.

[0075] In some embodiments, the row driving unit can determine the target row to be controlled currently according to the row strobe signal, and the column driving unit can first convert the digital voltage signals corresponding to each sub-pixel unit into analog voltages according to the column strobe signal, and then turn on each sub-pixel unit in the target row in time-sharing manner according to the target row to be controlled currently.

[0076] The pixel circuit module is further used to control the display driving circuits corresponding to the target sub-pixel units to be turned on according to the dimming signal, so as to drive the display materials corresponding to the target sub-pixel units to display.

[0077] In some embodiments, during the process of turning on the target sub-pixel units, the column driving unit can control the charging of the pixel capacitors in the target sub-pixel units according to the gray-scale quantization refresh signal and the analog voltages corresponding to the turned-on target sub-pixel units, complete the gray-scale conversion, and after the charging is completed, control the display duration of the display materials of the target sub-pixel units through the global co-control pulse signal, so as to adjust the brightness of the display screen of the display to the human eye visual comfort zone, which not only ensures that the color of the display screen does not deviate, but also makes the gray-scale transition more uniform and improves the display efficiency.

[0078] In summary, the microdisplay dimming system provided in this embodiment includes: a dimming configuration module, an encoding and strobe enabling module, a dimming module, and a pixel circuit module; the encoding and strobe enabling module is connected to the dimming configuration module and is also connected to the pixel circuit module; the dimming module is respectively connected to the dimming configuration module and the pixel circuit module; the pixel circuit module includes: a row driving unit, a column driving unit, and pixel circuits; the pixel circuits include: a plurality of sub-pixel units; the dimming configuration module is used to receive a dimming command; the dimming command is used to indicate a dimming mode or brightness adjustment information; the encoding and strobe enabling module is used to perform encoding processing on the input video source data according to the dimming command, generate deformed data and a strobe enabling signal corresponding to the deformed data; the dimming module is used to generate a dimming signal according to the dimming command, and the dimming signal includes: a gray-scale quantization refresh signal and a global co-control pulse signal; the pixel circuit module is used to conduct at least one target sub-pixel unit among the plurality of sub-pixel units through the row driving unit and the column driving unit according to the received strobe enabling signal; the pixel circuit module is further used to control the display driving circuit corresponding to each target sub-pixel unit to conduct according to the dimming signal, so as to drive the display material corresponding to the target sub-pixel unit to display. By introducing the dimming configuration module and the dimming module, the dimming module can generate the required dimming signal for dimming control according to the dimming command input by the dimming configuration module. Among them, by combining the gray-scale quantization refresh signal and the global co-control pulse signal as the dimming signal, the gray-scale quantization refresh signal is used to control the voltage magnitude to complete gray-scale conversion, and the global co-control pulse signal is used as a global signal to control the display duration of the display material, so as to enhance or weaken the overall display brightness, thereby adjusting the display screen brightness of the display to the human eye visual comfort zone, which not only ensures that the color of the display screen does not deviate, but also makes the gray-scale transition more uniform and improves the display efficiency.

[0079] Figure 2 FIG. is a schematic diagram of the architecture of another microdisplay dimming system provided by an embodiment of the present application. As Figure 2 shown, the dimming configuration module may include: an automatic dimming configuration interface module and a manual dimming configuration interface module. The automatic dimming configuration interface module is used to receive a dimming command sent by the host computer; the host computer can detect the ambient brightness information, and judge the display brightness to which the display should be adjusted according to the current display brightness of the display and the ambient brightness information, so that the host computer can generate a dimming command, and the dimming command may include: the current brightness information of the display and the display brightness information to be adjusted to.

[0080] The manual dimming configuration interface module is used to receive the dimming commands manually input by the user; the user can manually input the dimming commands according to the display requirements. Among them, in the manual mode, not only can the generation of dimming commands in the automatic mode be achieved, but also the input of dimming modes can be supported. The dimming modes can include: maintaining the refresh rate and reducing the resolution or maintaining the resolution and reducing the refresh rate.

[0081] Continue to refer to Figure 2 , the system may further include: a dimming policy module; the dimming policy module is respectively connected to the dimming configuration module and the encoding and strobe enabling module.

[0082] The dimming policy module is used to identify the dimming commands and determine the dimming policies indicated by the dimming commands.

[0083] Optionally, the dimming policy module is used to determine the corresponding dimming policies according to the input dimming commands. The implementation principle of the dimming policy module is similar to that of a multi - select switch. Each switch corresponds to enabling a dimming policy. The dimming policy module can turn on the corresponding switch according to the dimming commands, so as to output the corresponding dimming policies.

[0084] The encoding and strobe enabling module is specifically used to perform encoding processing on the video source data according to the dimming policy, generate the deformed data and the strobe enabling signal corresponding to the deformed data.

[0085] In some embodiments, the encoding and strobe enabling module can perform encoding on the input video source data according to the dimming policy determined by the dimming policy module, and then output the deformed data and the strobe enabling signal corresponding to the deformed data.

[0086] Optionally, the dimming module is specifically used to generate a grayscale quantization refresh signal and a global co - control pulse signal according to the dimming policy. The global co - control pulse signal includes: the duty cycle of the pulse signal and the signal inversion frequency; the grayscale quantization refresh signal is used to control the voltage magnitude to complete the grayscale conversion of the target sub - pixel unit; the global co - control pulse signal is used to control the display duration of the display material of the target sub - pixel unit.

[0087] Figure 3A dimming timing diagram provided by an embodiment of the present application. The grayscale quantization refresh signal is used to control the completion of grayscale conversion. Taking the 256 grayscale display with a maximum of 5V, a minimum of 0V, and 8 bits as an example, the voltage difference is 5V, and a linear resistor string is used for equal division. The display accuracy can reach 5 / 256 V; when it is determined according to the dimming strategy that the display brightness needs to be reduced to 80%, the maximum is adjusted to 4V, the minimum is 0V, the voltage difference is 4V, and a linear resistor string is used for equal division. The display accuracy can reach 4 / 256 V. The brightness of the 128 grayscale display equivalently drops from (128x5) / 256 to (128x4) / 256. When the dimming range is very large and the display brightness is reduced to 10%, if the maximum voltage is adjusted to 0.5V, the display accuracy can reach 0.5 / 256 V. Considering that the display material has a turn-on voltage requirement, assuming the turn-on voltage is 0.0195V, for the low grayscale part, such as grayscale levels 1 to 10, will be lost, resulting in grayscale loss. Therefore, there are defects in using only the grayscale quantization refresh signal for dimming, such as Figure 3 as shown

[0088] In this embodiment, a global co-control pulse signal is introduced. This is a digital signal that cannot control the grayscale brightness conversion in the analog circuit alone, but can be used as a global signal to increase or decrease the driving duration of the pixel driving part for a certain grayscale, that is, the display duration of the display material, to enhance or weaken the overall emission brightness. Taking the 256 grayscale display with a maximum of 5V, a minimum of 0V, and 8 bits as an example above, when the duty cycle of the global co-control pulse signal is 80% and the flip frequency is 2160 hz (to prevent discomfort caused by flicker to the human eye), the display accuracy can reach 4 / 256 V; for the above case of reducing the display brightness to 10%, if the maximum voltage is adjusted to 0.5V, the display accuracy can reach 0.5 / 256 V. Continuing to refer to Figure 3 , considering that the light-emitting material has a turn-on voltage requirement, assuming the turn-on voltage is 0.0195V, for the low grayscale part, such as grayscale levels 1 to 10 will be lost. For this situation, the maximum voltage can be maintained at 5V, the duty cycle of the global co-control pulse signal is 10%, and the flip frequency is 2160 hz to achieve the same effect of reducing the display brightness to 10% without losing grayscale, or the maximum voltage can be adjusted to 4V, the duty cycle of the global co-control pulse signal is 12.5%, and the flip frequency is 2160 hz.

[0089] It can be seen that by combining the global co-control pulse signal and the grayscale quantization refresh signal, the display brightness of the display can be adjusted to any desired brightness.

[0090] Figure 4 A schematic diagram of the pixel circuit structure of a microdisplay dimming system provided by an embodiment of the present application. The display material used in this pixel circuit structure is a self-luminous liquid crystal material. As Figure 4As shown, the row driving unit in the pixel circuit module is connected to one end of the first switching component in each sub-pixel unit; the other end of the first switching component is respectively connected to one end of the pixel capacitor and the first end of the second switching component;

[0091] the second end of the second switching component is connected to the first end of the third switching component;

[0092] the second end of the third switching component is connected to one end of the display material;

[0093] the column driving unit is connected to the third end of the second switching component in each sub-pixel unit.

[0094] The circuit structures of each sub-pixel unit are the same. Taking one sub-pixel unit as an example, the sub-pixel unit includes a first switching component, a pixel capacitor, a second switching component, a third switching component, a display material, and a load switching component; wherein, the row driving unit is connected to one end of the first switching component of the sub-pixel unit, and the other end of the first switching component is respectively connected to one end of the pixel capacitor and the first end of the second switching component; the second end of the second switching component is connected to the first end of the third switching component; the second end of the third switching component is connected to one end of the display material, and the first end of the third switching component is also connected to the load switching component; the column driving unit is connected to the third end of the second switching component in each sub-pixel unit.

[0095] The gray-scale quantization refresh signal is input through the third end of the second switching component to charge the pixel capacitor of the sub-pixel unit; the global co-control pulse signal is input through the third end of the third switching component.

[0096] Optionally, the row driving unit is configured to determine the target row to be turned on currently according to the row driving signal in the strobe enable signal; the column driving unit is configured to turn on each target sub-pixel unit in the target row according to the column driving signal in the strobe enable signal, and charge the pixel capacitors of each target sub-pixel unit through the gray-scale quantization refresh signal, and when the charging voltage of the pixel capacitor reaches the preset voltage, control the third switching component in each target sub-pixel unit to be turned on or off through the global co-control pulse signal, so as to drive the display material corresponding to each target sub-pixel unit to display.

[0097] Optionally, the dimming module is specifically configured to determine the gray-scale quantization refresh signal according to the dimming strategy; determine the pressure difference information according to the gray-scale quantization refresh signal; determine the pulse signal duty ratio in the global co-control pulse signal according to the pressure difference information and the brightness adjustment information. The pressure difference information refers to the pressure difference between the highest voltage and the lowest voltage of the driving voltage.

[0098] Continue to refer to Figure 4, after the row driving unit determines the target row to be turned on currently, the column driving unit can turn on each target sub-pixel unit in the target row in sequence. For a currently turned-on target sub-pixel unit, the pixel capacitor in the target sub-pixel unit can be charged through a grayscale quantization refresh signal. When the charging voltage reaches the voltage corresponding to the required grayscale value, the charging stops. At this time, the first switch component disconnects, and the pixel capacitor discharges to charge the display material of the target sub-pixel unit, so as to control the display material to display according to the required brightness level. During this process, the global co-control pulse signal can control the conduction or turning off of the third switch component in the target sub-pixel unit, thereby controlling the display duration of the display material of the target sub-pixel unit to achieve the purpose of adjusting the display brightness.

[0099] The global co-control pulse signal may include: the duty cycle of the global co-control pulse signal and the signal inversion frequency. In some embodiments, the duty cycle of the global co-control pulse signal can be determined according to the dimming signal. Assuming that the voltage difference between the highest voltage and the lowest voltage of the driving voltage in the pixel circuit is a (100%), the full brightness is q, and it is necessary to dim to the brightness p. The voltage difference can be kept unchanged. At this time, the duty cycle of the global co-control pulse signal is adjusted to p / q. When the voltage difference is adjusted to b, the duty cycle of the global co-control pulse signal needs to be adjusted to (a p) / (b q).

[0100] Since the full brightness is q under the full voltage difference a, and to reach the brightness p under the new voltage difference b, we can assume that there is a coefficient k inversely proportional to the voltage difference (this coefficient actually depends on the specific relationship between the voltage difference and the brightness), such that:

[0101] p = k b (new duty cycle)

[0102] At the same time, we know that the brightness is q under the full voltage difference a and the full duty cycle (i.e., 1), so there is:

[0103] q = k a 1

[0104] Substitute the second equation into the first equation to solve for the new duty cycle, and we get:

[0105] New duty cycle = (p / q) (a / b) = (a p) / (b q).

[0106] In addition, the signal inversion frequency is adjustable according to the comfort of the human eye, and both the highest voltage and the lowest voltage are adjustable.

[0107] The signal inversion frequency refers to the number of signal inversions within one signal period. A group of pulse signals consisting of one high level and one low level, one inversion corresponds to a group of pulse signals. The higher the signal inversion frequency, the more pulse signals it contains.

[0108] In some embodiments, the introduction timing of the global co - control pulse signal is after the gray - scale quantization refresh signal has charged the pixel capacitor, avoiding interference to the charging process caused by the rising or falling switching of the global co - control pulse signal. Different from the previous methods of adding a constant - current DC / DC converter that can quickly control current on the basis of a DC constant - voltage source, or adding a PWM chopper switch at the output of a constant - current power supply, problems such as color deviation and uneven gray - scale transition brought by PWM dimming, especially at low brightness.

[0109] Optionally, since the rising or falling switching of the dimming signal is random, in order to avoid interference to the charging processes of adjacent rows or nearby rows, resulting in inconsistent display gray - scale problems, in this embodiment, the dimming signal generated by the dimming module can be output row - by - row.

[0110] Of course, the interference between the charging processes of adjacent rows can also be reduced by any of the following methods:

[0111] Synchronization mechanism: Design a synchronization mechanism to ensure that the dimming signal is output row - by - row in sequence. This can be achieved by using a line synchronization signal or a timer. The synchronization mechanism can ensure that each row of pixels is only affected by the dimming signal of its own row during charging, thus avoiding interference between adjacent rows.

[0112] Debounce processing: Perform debounce processing on the dimming signal to reduce the instantaneous noise caused by signal switching. Debounce processing can be achieved by introducing a short delay time after signal switching to ensure the signal is stable before subsequent operations.

[0113] Signal smoothing processing: Perform smoothing processing on the dimming signal to reduce the sudden change during signal switching. Smoothing processing can be achieved by using a filter or an interpolation algorithm to make the dimming signal smoother during switching, thus reducing interference to the charging processes of adjacent rows.

[0114] Inter - row isolation: In hardware design, inter - row isolation measures can be considered, such as using a physical barrier or increasing the row spacing, etc. These measures can further reduce the electrical interference between adjacent rows and improve the display quality.

[0115] Software optimization: In software algorithms, the generation and output logic of the dimming signal can be optimized to reduce the impact of randomness on the display quality. For example, a prediction algorithm can be used to calculate and output the dimming signal in advance, thus avoiding interference during the charging processes of adjacent rows.

[0116] Optionally, if the dimming command indicates a dimming mode, the dimming strategy module determines the dimming strategy corresponding to the dimming mode according to the dimming mode, and preprocesses the pixel circuit module according to the dimming strategy; the dimming modes include: maintaining the resolution and reducing the refresh rate, or maintaining the refresh rate and reducing the resolution.

[0117] In some embodiments, when the dimming command indicates a dimming mode, the dimming strategy module may also preprocess the pixel circuit module according to the dimming mode to reduce the data processing amount of the encoding and gating enable module.

[0118] In the dimming mode of maintaining the resolution and reducing the refresh rate, or maintaining the refresh rate and reducing the resolution, it is possible that only some or all of the sub-pixel units in some rows or some columns are turned on within one frame. In this case, the dimming strategy module may first preprocess the row and column data in the pixel circuit module according to the dimming strategy, only retain the information of some rows or columns, and output the preprocessed information to the pixel circuit module. In this way, the pixel circuit module only processes and controls the signals of the sub-pixel units in the remaining rows or columns.

[0119] Optionally, if the dimming mode is to maintain the resolution and reduce the refresh rate, the dimming strategy module determines the number of sub-frames to be divided for each frame and the number of rows and columns to be displayed for each sub-frame in the pixel circuit module according to the original resolution, the original refresh rate, and the refresh rate to be displayed.

[0120] In some embodiments, for the dimming mode of maintaining the resolution and reducing the refresh rate, let the original resolution be r c, the original refresh rate be m, and the refresh rate to be displayed be n. Then, the source frame needs to be divided into mn sub-frames for display, and the number of rows and columns displayed each time is (r c) / (m / n), and the division method is not limited.

[0121] Figure 5 This is a working principle diagram in the scenario of maintaining the resolution and reducing the refresh rate provided by the embodiments of the present application. In the application scenario of maintaining the resolution and reducing the refresh rate, a video source frame is divided into 2 sub-frames for display. Figure 5 Taking 2 sub-frames as an example, (0,0) represents the position of the sub-pixel unit in the first row and the first column, (0,1919) represents the position of the sub-pixel unit in the first row and the 1920th column, (1079,0) represents the position of the sub-pixel unit in the 1080th row and the first column, (1079,1919) represents the position of the sub-pixel unit in the 1080th row and the 1920th column. The first sub-frame is odd rows and odd columns, even rows and even columns, and the second sub-frame is odd rows and even columns, even rows and odd columns, and they are alternately displayed. The refresh rate is reduced to 180hz, and the resolution remains 1920x1080; the division method and the number of sub-frames are variable.

[0122] Optionally, if the dimming mode is to maintain the refresh rate and reduce the resolution, the dimming strategy module divides multiple sub-pixel units into regions according to the original resolution and the resolution to be displayed, obtains multiple groups of pixel units, and determines the number of sub-pixel units to be displayed in each group of pixel units.

[0123] In some other embodiments, for the dimming mode of maintaining the refresh rate and reducing the resolution, let the original resolution be r c, the original refresh rate be m, and the resolution to be displayed be r c / j. One sub-pixel unit out of every j sub-pixel units in one frame from the source needs to be used to display the information of these j sub-pixel units. The position of the one sub-pixel unit used for display among the j sub-pixel units is not limited, and the determination method of the one sub-pixel unit used for display among the i sub-pixel units is not limited.

[0124] Figure 6 This is a working principle diagram for the scenario of maintaining the refresh rate and reducing the resolution provided by the embodiments of the present application. In the application scenario of maintaining the refresh rate and reducing the resolution, a 2x2-sized rectangular window slides through all sub-pixel units, and only one sub-pixel unit within the rectangular window is displayed each time. The black-filled boxes in the figure represent the lit sub-pixel units, and the rest are unlit sub-pixel units. Taking the resolution of 1920x1080 as an example, (0,0) represents the position of the sub-pixel unit in the first row and the first column, (0,1918) represents the position of the sub-pixel unit in the first row and the 1919th column, and so on. (1079,1919) represents the position of the sub-pixel unit in the 1080th row and the 1920th column. In this figure, the positions of the lit sub-pixel units are in odd rows and odd columns. Since only one sub-pixel unit out of four sub-pixel units is lit, the screen brightness is reduced to 1 / 4 of the original, and at the same time, the resolution also becomes 1 / 4 of the original, while the refresh rate remains 360hz; the size of the rectangular window and the number and position of the selected lit sub-pixel units within the window are all variable.

[0125] Figure 7 This is a schematic diagram of the dimming effect provided by the embodiments of the present application. Assume that the driving voltage difference is 5V when the system is at normal full brightness. Now, it is necessary to adjust the brightness to 40% of the full brightness. Figure 7 In (a) of, the lit area 1 represents the effect diagram of adjustment using the conventional method in the past. The driving voltage difference is adjusted to 2V and displayed for one frame duration. The area enclosed by the xy axes is equivalent to the display brightness L1.

[0126] Figure 7 In (b) of, the lit area 2 represents the effect diagram of adjustment using the method of the present application. The driving voltage difference is maintained at 5V, the duty cycle of the global co-control pulse signal is 40%, the inversion frequency is 2160hz, and it is displayed for one frame duration. The area enclosed by the xy axes is equivalent to the display brightness L2.

[0127] Figure 7 In (c) thereof, the lit area 3 represents another effect diagram adjusted by the method of the present application. The driving voltage difference is adjusted to 4V, the duty cycle of the global co-control pulse signal is 50%, the inversion frequency is 2160 hz, and the display duration is 1 frame. The area enclosed by the xy-axis is equivalent to the display brightness L3. Among them, L1 = L2 = L3.

[0128] Figure 8 It is a schematic diagram of the pixel circuit structure of another microdisplay dimming system provided by the embodiment of the present application. The display material used in this pixel circuit structure is a non-self-luminous liquid crystal material. That is to say, the method of the present application can be used for both self-luminous liquid crystal materials, where the self-luminous materials include but are not limited to: LED (light-emitting diode), OLED (organic light-emitting diode), micro LED (micro light-emitting diode), and Q-LED (quantum dot light-emitting diode), and can also be used for non-self-luminous liquid crystal materials.

[0129] Self-luminous means that the material itself has the ability to emit light and can emit light without an external light source. Non-self-luminous liquid crystal materials refer to liquid crystal materials that do not have the ability to emit light by themselves and need to rely on an external light source (such as a backlight module) to achieve display. Different from Figure 4 is that Figure 8 in the pixel circuit structure of Figure 4 is the same. In order to distinguish the two capacitors, the pixel capacitor connected to the first switch component can be called the first pixel capacitor, and the pixel capacitor replacing the display material can be called the second pixel capacitor.

[0130] By subtracting the voltage of the first pixel capacitor from the applied common voltage VCOM, the pressure difference result is obtained. When there is a pressure difference between VCOM and the first pixel capacitor, the non-self-luminous liquid crystal material can be displayed, and when there is no pressure difference between VCOM and the first pixel capacitor, the non-self-luminous liquid crystal material is not displayed.

[0131] Figure 9 It is a schematic diagram of the pixel circuit structure of yet another microdisplay dimming system provided by the embodiment of the present application, Figure 4 and Figure 8 the pixel circuit structure of Figure 9 belongs to an analog pixel structure, while

[0132] shown in Figure 9As shown, taking a sub-pixel unit as an example, it includes a first inverter, a second inverter, a fourth switch component, a fifth switch component, and a sixth switch component; the column driving unit is respectively connected to the first end of the fourth switch component and the first end of the fifth switch component, the row driving unit is respectively connected to the second end of the fourth switch component and the second end of the fifth switch component, the third end of the fourth switch component is connected to the input end of the first inverter, the third end of the fourth switch component is also connected to the output end of the second inverter, the third end of the fifth switch component is connected to the output end of the first inverter, and the third end of the fifth switch component is also connected to the input end of the second inverter; the first end of the sixth switch component is used to input a global co-control pulse signal, and the second end of the sixth switch component is respectively connected to the input end of the first inverter and the third end of the fourth switch component.

[0133] In principle, the voltage remains unchanged, and gray-scale conversion is performed by controlling the duration of PWM (Pulse Width Modulation). The gray-scale quantization refresh signal VDDA can be selected as multi-level. The PWM signal is normally connected to the column driving line, and the global co-control pulse signal is connected to one end of the pixel electrode, so that the brightness adjustment of the common cathode self-luminous material can be realized.

[0134] Among them, PWM is a method of digital encoding of analog signal levels. It converts a time signal with amplitude variation into a signal with pulse width variation. This technology controls the average output of an analog circuit by adjusting the duty cycle of the pulse signal (the ratio of the pulse width to the pulse period). Specifically, within a fixed period, by changing the duration of the high level (or low level), the average voltage or current level of the output signal is indirectly controlled.

[0135] Figure 10 It is a schematic flow chart of a dimming method provided by an embodiment of the present application. This method can be applied to the pixel circuit module in the microdisplay dimming system of the above embodiment, such as Figure 10 As shown, this method may include:

[0136] S101. Receive a strobe enable signal and a dimming signal.

[0137] Among them, the dimming signal includes: a gray-scale quantization refresh signal and a global co-control pulse signal.

[0138] S102. According to the strobe enable signal, turn on the target sub-pixel unit among multiple sub-pixel units through the row driving unit and the column driving unit.

[0139] S103. Control the corresponding display driving circuit of the target sub-pixel unit to turn on according to the dimming signal, so as to drive the display material corresponding to the target sub-pixel unit to display.

[0140] It should be noted that the implementation principles of the above method steps and the corresponding effects have been described in detail in the previous system introduction, and will not be elaborated here.

[0141] In summary, the microdisplay dimming system provided in this embodiment includes: a dimming configuration module, an encoding and strobe enabling module, a dimming module, and a pixel circuit module; the encoding and strobe enabling module is connected to the dimming configuration module and is also connected to the pixel circuit module; the dimming module is respectively connected to the dimming configuration module and the pixel circuit module; the pixel circuit module includes: a row driving unit, a column driving unit, and a pixel circuit; the pixel circuit includes: a plurality of sub-pixel units; the dimming configuration module is used to receive a dimming command; the dimming command is used to indicate a dimming mode or brightness adjustment information; the encoding and strobe enabling module is used to perform encoding processing on the input video source data according to the dimming command to generate deformed data and a strobe enabling signal corresponding to the deformed data; the dimming module is used to generate a dimming signal according to the dimming command, and the dimming signal includes: a grayscale quantization refresh signal and a global co-control pulse signal; the pixel circuit module is used to conduct at least one target sub-pixel unit among the plurality of sub-pixel units through the row driving unit and the column driving unit according to the received strobe enabling signal; the pixel circuit module is further used to control the display driving circuit corresponding to each target sub-pixel unit to conduct according to the dimming signal to drive the display material corresponding to the target sub-pixel unit to display. By introducing the dimming configuration module and the dimming module, this system enables the dimming module to generate the required dimming signal for dimming control according to the dimming command input by the dimming configuration module. Among them, by combining the grayscale quantization refresh signal and the global co-control pulse signal as the dimming signal, the grayscale quantization refresh signal is used to control the voltage magnitude to complete grayscale conversion, and the global co-control pulse signal, as a global signal, enhances or weakens the overall display brightness by controlling the display duration of the display material, so as to adjust the display screen brightness of the display to the human eye visual comfort zone, which not only ensures that the color of the display screen does not deviate, but also makes the grayscale transition more uniform and improves the display efficiency.

[0142] It should be noted that some modules in the above system can be one or more integrated circuits configured to implement the above methods. For example: one or more application specific integrated circuits (ASICs), or, one or more digital signal processors (DSPs), or, one or more field programmable gate arrays (FPGAs), etc. Again, when a certain module above is implemented in the form of a processing element scheduling program code, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call program code. Again, these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0143] The above modules can be connected or communicate with each other via wired connections or wireless connections. Wired connections can include metal cables, optical cables, hybrid cables, etc., or any combination thereof. Wireless connections can include connections in the form of LAN, WAN, Bluetooth, ZigBee, or NFC, etc., or any combination thereof. Two or more modules can be combined into a single module, and any one module can be divided into two or more units. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems and devices described above can refer to the corresponding processes in the method embodiments, and will not be elaborated in this application.

[0144] Figure 11 FIG. is a schematic structural diagram of an electronic device provided by an embodiment of the present application, and the electronic device is used to execute the above dimming method.

[0145] The device may include: a processor 801 and a storage medium 802.

[0146] The storage medium 802 is used to store a program, and the processor 801 calls the program stored in the storage medium 802 to execute the above method embodiments. The specific implementation manners and technical effects are similar and will not be elaborated here.

[0147] Among them, the storage medium 802 stores program code, and when the program code is executed by the processor 801, the processor 801 is caused to execute various steps in the dimming method according to various exemplary embodiments of the present application described in the "Exemplary Method" section of this specification.

[0148] The processor 801 may be a general-purpose processor, such as a central processing unit (CPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

[0149] The storage medium 802, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. The storage medium may include at least one type of storage medium, for example, it may include flash memory, a hard disk, a multimedia card, a card-type storage medium, a random access memory (RAM), a static random access memory (SRAM), a programmable read-only memory (PROM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic storage medium, a disk, an optical disc, and so on. The storage medium is any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The storage medium 802 in the embodiments of the present application may also be a circuit or any other device capable of implementing a storage function, for storing program instructions and / or data.

[0150] Optionally, the present application also provides a program product, such as a computer-readable storage medium, including a program that is used to execute the above method embodiments when executed by a processor.

[0151] In several embodiments provided by the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of the devices or units can be in electrical, mechanical or other forms.

[0152] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0153] In addition, the functional units in each embodiment of the present application can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of a combination of hardware and software functional units.

[0154] The above-mentioned integrated units implemented in the form of software functional units can be stored in a computer-readable storage medium. The above-mentioned software functional units stored in a storage medium include several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (English: processor) to execute some steps of the methods described in each embodiment of the present application. The foregoing storage medium includes: USB flash drives, mobile hard disks, read-only storage media (English: Read-Only Memory, abbreviated as: ROM), random access storage media (English: Random Access Memory, abbreviated as: RAM), magnetic disks or optical discs and other various media that can store program codes.

Claims

1. A micro display dimming system, characterized in that: include: A dimming configuration module, a coding and gating enabling module, a dimming module and a pixel circuit module; the coding and gating enabling module is connected to the dimming configuration module, and the coding and gating enabling module is connected to the pixel circuit module; the dimming module is respectively connected to the dimming configuration module and the pixel circuit module; The pixel circuit module includes: a row driving unit, a column driving unit and a pixel circuit; the pixel circuit includes: a plurality of sub-pixel units; The dimming configuration module is used to receive a dimming command; the dimming command is used to indicate a dimming mode or brightness adjustment information; The encoding and strobe enable module is used to encode the input video source data according to the dimming command to generate deformed data and a strobe enable signal corresponding to the deformed data; The dimming module is used to generate a dimming signal according to the dimming command, and the dimming signal includes: a grayscale quantization refresh signal and a global coordination pulse signal; The pixel circuit module is used to turn on at least one target sub-pixel unit among the plurality of sub-pixel units through the row driving unit and the column driving unit according to the received gate enable signal; The pixel circuit module is also used to control the display driving circuit corresponding to each of the target sub-pixel units to be turned on according to the dimming signal, so as to drive the display material corresponding to the target sub-pixel unit to display; The row driving unit is connected to one end of the first switch component in each sub-pixel unit; the other end of the first switch component is respectively connected to one end of the pixel capacitor and the first end of the second switch component; The second end of the second switch component is connected to the first end of the third switch component; The second end of the third switch component is connected to one end of the display material; The column driving unit is connected to the third end of the second switch component in each sub-pixel unit.

2. The micro display dimming system according to claim 1, characterized in that: Also includes: A dimming strategy module; the dimming strategy module is connected to the dimming configuration module and the code and gating enable module respectively; The dimming strategy module is used to identify the dimming command and determine the dimming strategy indicated by the dimming command; The encoding and gating enable module is specifically used to encode the video source data according to the dimming strategy to generate deformed data and a gating enable signal corresponding to the deformed data.

3. The micro display dimming system according to claim 2, characterized in that: The dimming module is specifically used to generate a grayscale quantization refresh signal and a global co-control pulse signal according to the dimming strategy, and the global co-control pulse signal includes: a pulse signal duty cycle and a signal flipping frequency; the grayscale quantization refresh signal is used to control the voltage size to complete the grayscale conversion of the target sub-pixel unit; the global co-control pulse signal is used to control the display time of the display material of the target sub-pixel unit.

4. The micro display dimming system according to claim 1, characterized in that: The row driving unit is used to determine the target row to be turned on currently according to the row driving signal in the gate enable signal; The column driving unit is used to turn on each target sub-pixel unit in the target row according to the column driving signal in the selection enable signal, and charge the pixel capacitor of each target sub-pixel unit through the grayscale quantization refresh signal, and when the charging voltage of the pixel capacitor reaches a preset voltage, control the conduction or closing of the third switch component in each target sub-pixel unit through the global coordination pulse signal to drive the display material corresponding to each target sub-pixel unit to display.

5. The micro display dimming system according to claim 2, characterized in that: If the dimming command indicates a dimming mode, the dimming strategy module determines a dimming strategy corresponding to the dimming mode according to the dimming mode, and pre-processes the pixel circuit module according to the dimming strategy; The dimming modes include: maintaining resolution and reducing refresh rate or maintaining refresh rate and reducing resolution.

6. The micro display dimming system according to claim 5, characterized in that: If the dimming mode is to maintain resolution and reduce refresh rate, the dimming strategy module determines the number of sub-frames to be divided into for each frame and the number of rows and columns to be displayed in each sub-frame in the pixel circuit module according to the original resolution, the original refresh rate and the refresh rate to be displayed.

7. The micro display dimming system according to claim 5, characterized in that: If the dimming mode is to maintain refresh rate and reduce resolution, the dimming strategy module divides the multiple sub-pixel units into regions according to the original resolution and the resolution to be displayed, obtains multiple groups of pixel units, and determines the number of sub-pixel units to be displayed in each group of pixel units.

8. The micro display dimming system according to claim 3, characterized in that: The dimming module is specifically used to determine the grayscale quantization refresh signal according to the dimming strategy; Determining pressure difference information according to the grayscale quantization refresh signal; The duty cycle of the pulse signal in the global cooperative control pulse signal is determined according to the pressure difference information and the brightness adjustment information.

9. A dimming method, characterized in that: A pixel circuit module used in a micro-display dimming system according to any one of claims 1 to 8, the method comprising: Receive a gating enable signal and a dimming signal; the dimming signal includes: a grayscale quantization refresh signal and a global coordination pulse signal; According to the gate enable signal, turning on a target sub-pixel unit among the plurality of sub-pixel units through the row driving unit and the column driving unit; The display driving circuit corresponding to the target sub-pixel unit is controlled to be turned on according to the dimming signal, so as to drive the display material corresponding to the target sub-pixel unit to display.

Images