Reflection type display method for liquid crystal on silicon

Abstract

The invention relates to the technical field of intelligent display, and provides a silicon-based liquid crystal reflection type display method which comprises the following steps: light emitted by a light source is subjected to dodging and shaping and irradiates a liquid crystal layer through a polarized light beam separator; based on a preset strategy, obtaining an optimal display gray scale and a brightness value, and calculating an initial voltage according to the optimal display gray scale and the brightness value; constructing an evaluation function according to the flatness of the surface of the current silicon-based liquid crystal metal reflecting layer recorded in the silicon-based liquid crystal manufacturing process, and obtaining compensation voltage according to the evaluation function and a preset algorithm; driving voltage is obtained according to the initial voltage and the compensation voltage, the light transmission performance of the liquid crystal layer is controlled according to the driving voltage, so that light entering the metal reflecting layer is adjusted, the light is reflected by the metal reflecting layer and then penetrates through the liquid crystal layer and the polarized light beam separator to enter a projection light path, and a picture is displayed on a screen. The display quality of the silicon-based liquid crystal can be effectively improved.

Description

Technical Field

[0001] The present application belongs to the field of intelligent display technology, and specifically relates to a silicon-based liquid crystal reflective display method. Background Art

[0002] Display technology is a key means and important way for people to obtain external information. With the development of science and technology and the potential needs of military and civilian use, miniaturization, high resolution and low power consumption are becoming the development direction of the next generation of display technology. As a product of the combination of semiconductor integrated circuits and liquid crystal displays, silicon-based liquid crystals have attracted much attention.

[0003] Silicon-based liquid crystal uses a CMOS integrated circuit chip coated with liquid crystal silicon as the substrate of the reflective LCD. It is polished using advanced technology and then plated with aluminum as a reflector to form a CMOS substrate. The CMOS substrate is then bonded to a glass substrate containing a transparent electrode and then injected with liquid crystal for packaging. Silicon-based liquid crystal places the control circuit behind the liquid crystal to increase the light transmittance, thereby achieving greater light output and higher resolution.

[0004] However, in a LCOS projection system, any defects in the optical engine, mechanical structure, system circuit or driver chip itself will affect the image display effect, resulting in the failure to fully exert or reflect the high-resolution advantage of LCOS. Summary of the invention

[0005] The embodiment of the present application provides a silicon-based liquid crystal reflective display method to solve the above-mentioned technical problems in the prior art.

[0006] A first aspect of an embodiment of the present application provides a silicon-based liquid crystal reflective display method, comprising:

[0007] The light emitted by the light source is homogenized and shaped, and then irradiates the liquid crystal layer through the polarization beam splitter;

[0008] Based on the preset strategy, the optimal display grayscale and brightness value are obtained, and the initial voltage is calculated according to the optimal display grayscale and brightness value;

[0009] An evaluation function is constructed according to the flatness of the surface of the metal reflective layer of the current LCOS recorded during the LCOS manufacturing process, and a compensation voltage is obtained according to the evaluation function and a preset algorithm;

[0010] The driving voltage is obtained according to the initial voltage and the compensation voltage, and the light transmittance of the liquid crystal layer is controlled according to the driving voltage, thereby adjusting the light incident on the metal reflective layer. The light is reflected by the metal reflective layer, and then passes through the liquid crystal layer and the polarized beam splitter to enter the projection light path, and the picture is displayed on the screen.

[0011] In some embodiments, the light emitted by the light source is homogenized and shaped, and irradiates the liquid crystal layer through a polarization beam splitter, wherein two fly-eye lenses are used to homogenize the light emitted by the light source, specifically:

[0012] The first fly-eye lens collects light emitted from the light source, and the second fly-eye lens is arranged at an interval corresponding to the first fly-eye lens in the light emitting direction, so that each single eye of the first fly-eye lens is imaged to the single eye corresponding to the second fly-eye lens.

[0013] In some embodiments, the optimal display grayscale and brightness value is obtained based on a preset strategy, and the initial voltage is calculated according to the optimal display grayscale and brightness value, wherein the optimal display grayscale and brightness value is obtained based on the preset strategy, including the following steps:

[0014] Taking grayscale and brightness as optimization variables, a mathematical model between field order, field weight, display circuit common pole voltage and optimization variables is constructed. The mathematical model is used as the objective function model, and the preset algorithm is applied to solve the Pareto optimal solution set to obtain the optimal grayscale and brightness values.

[0015] In some embodiments, the method of taking grayscale and brightness as optimization variables and constructing a mathematical model between field sequence, field weight, display circuit common electrode voltage and optimization variables comprises the following steps:

[0016] Obtaining the grayscale and brightness of the display screen, and several groups of sample data between the field sequence, field weight, and the common electrode voltage of the display circuit;

[0017] The grayscale and brightness data of the display screen are respectively fitted with regression models to obtain corresponding regression equations of the grayscale and brightness of the display screen.

[0018] In some embodiments, the evaluation function is constructed according to the current flatness of the surface of the silicon-based liquid crystal metal reflective layer recorded during the silicon-based liquid crystal manufacturing process, and the compensation voltage is obtained according to the evaluation function and a preset algorithm, wherein the flatness of the current surface of the silicon-based liquid crystal metal reflective layer recorded during the silicon-based liquid crystal manufacturing process includes the following steps:

[0019] A silicon-based liquid crystal metal reflective layer is manufactured by a preset method. During the manufacturing process of the silicon-based liquid crystal metal reflective layer, the flatness of the current silicon-based liquid crystal metal reflective layer surface is detected, and the flatness is associated and stored with the current silicon-based liquid crystal through a preset identity identification code.

[0020] In some embodiments, the method of manufacturing the liquid crystal on silicon metal reflective layer by a predetermined method includes the following steps:

[0021] A driving circuit is embedded on a silicon wafer substrate to obtain a driving circuit layer, an insulating layer is arranged on the driving circuit layer, and then a metal reflective layer and a composite protective layer are deposited in sequence, wherein the composite protective layer comprises a lower layer and an upper layer, wherein the lower layer is a soft layer in contact with the surface of the metal reflective layer, and the upper layer is a hard layer covering the surface of the lower layer;

[0022] The composite protection layer, the metal reflective layer and the insulating layer are etched to form grooves so that the bottom of the grooves exposes the upper surface of the driving circuit layer;

[0023] The groove is filled with a dielectric, and the dielectric is covered with a composite protective layer to obtain a dielectric layer;

[0024] The dielectric layer is subjected to mechanical polishing, and the polishing stops when the upper layer of the composite protective layer is polished;

[0025] The lower layer of the composite protective layer is etched to expose the upper surface of the metal reflective layer.

[0026] In some embodiments, the step of constructing an evaluation function based on the flatness of the surface of the metal reflective layer of the current LCOS recorded during the LCOS manufacturing process, and obtaining the compensation voltage based on the evaluation function and a preset algorithm includes the following steps:

[0027] The evaluation function is obtained according to the flatness of the upper surface of the metal reflective layer by using the ring energy method;

[0028] Set the random disturbance voltage with mean 0 and equal variance;

[0029] Positive and negative random disturbance voltages are applied to the silicon-based optical phased array chip, and two performance evaluation function values ​​are obtained according to the evaluation function.

[0030] According to the two performance evaluation function values ​​and the preset objective function calculation formula, the change amount of the objective function is obtained;

[0031] According to the change of the objective function and the preset expression, the voltage signal loaded on the electrode of the silicon-based optical phased array chip is calculated;

[0032] The corresponding light intensity distribution is obtained according to the current voltage signal. If the evaluation function corresponding to the current light intensity distribution is at a maximum value, the current voltage signal is used as the compensation voltage.

[0033] In some embodiments, the voltage signal loaded on the electrode of the silicon-based optical phased array chip is calculated based on the change amount of the objective function and a preset expression.

[0034] In some embodiments, the method of obtaining a driving voltage according to the initial voltage and the compensation voltage, and controlling the light transmission performance of the liquid crystal layer according to the driving voltage, thereby adjusting the light incident on the metal reflective layer, the light is reflected by the metal reflective layer, and then passes through the liquid crystal layer and the polarization beam splitter to enter the projection light path, and the picture is displayed on the screen, further comprising:

[0035] An application scenario selection signal is received, and a refresh mode matching the application scenario is determined according to the application scenario selection signal.

[0036] In some embodiments, the receiving of the application scenario selection signal and determining the refresh mode matching the application scenario according to the application scenario selection signal are specifically:

[0037] In application scenarios where the intensity or modulation phase synchronization of the entire image is required to exceed a preset threshold, the global refresh mode is used; otherwise, the line-by-line refresh mode is used.

[0038] It can be seen from the above that the embodiment of the present application can effectively meet the lighting uniformity requirement and thus improve the display image quality by performing light homogenization and shaping processing on the light source of the silicon-based liquid crystal.

[0039] At the same time, the embodiment of the present application obtains the optimal display grayscale and brightness value based on the preset strategy, and calculates the initial voltage according to the optimal display grayscale and brightness value, which can ensure the optimal display effect of the picture and thus improve the display picture quality.

[0040] Moreover, a key factor in the display quality of silicon-based liquid crystal is the flatness of the metal reflective layer surface. Only when the metal reflective layer is sufficiently flat can the light reflection path be accurately controlled, thereby obtaining the expected picture quality. However, in the manufacturing process of silicon-based liquid crystal, for example, polishing and grinding, there are inevitably structural errors, and the structural errors are not uniform values, but there are individual differences. Based on this, in the silicon-based liquid crystal manufacturing process, the embodiment of the present application separately detects and records the flatness of the metal reflective layer surface of each silicon-based liquid crystal, and constructs an evaluation function based on the recorded flatness, and then obtains the compensation voltage based on the evaluation function and the preset algorithm. Obviously, it can specifically eliminate the display picture quality defects caused by the structural errors in the manufacturing process.

[0041] It can be seen that the embodiments of the present application comprehensively consider multiple factors such as the lighting source, driving parameters and manufacturing structure characteristics, and can effectively improve the image quality of silicon-based liquid crystal displays.

[0042] A second aspect of an embodiment of the present application provides a terminal, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method described in the first aspect when executing the computer program.

[0043] A third aspect of an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method described in the first aspect are implemented.

[0044] A fourth aspect of the present application provides a computer program product, which, when executed on a terminal, enables the terminal to execute the steps of the method described in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0046] Figure 1 It is a schematic flow chart of a silicon-based liquid crystal reflective display method provided in an embodiment of the present application;

[0047] Figure 2 It is a structural diagram of a terminal provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0049] In order to illustrate the technical solution described in this application, a specific embodiment is provided below for illustration.

[0050] See also Figure 1 , Figure 1 FIG. 1 is a flow chart of a silicon-based liquid crystal reflective display method provided in an embodiment of the present application. Figure 1 As shown, a silicon-based liquid crystal reflective display method, the method comprising the following steps:

[0051] Step 1, the light emitted by the light source is homogenized and shaped, and then irradiates the liquid crystal layer through a polarization beam splitter;

[0052] Step 2, based on a preset strategy, obtaining the optimal display grayscale and brightness value, and calculating the initial voltage according to the optimal display grayscale and brightness value;

[0053] Step 3, constructing an evaluation function according to the flatness of the surface of the metal reflective layer of the current LCOS recorded during the LCOS manufacturing process, and obtaining a compensation voltage according to the evaluation function and a preset algorithm;

[0054] Step 4, obtain the driving voltage according to the initial voltage and the compensation voltage, and control the light transmittance of the liquid crystal layer according to the driving voltage, thereby adjusting the light incident on the metal reflective layer. The light is reflected by the metal reflective layer, and then passes through the liquid crystal layer and the polarized beam splitter to enter the projection light path, and the picture is displayed on the screen.

[0055] Obviously, the embodiment of the present application can effectively meet the illumination uniformity by performing light homogenization and shaping processing on the light source of the silicon-based liquid crystal, thereby improving the display image quality;

[0056] At the same time, the embodiment of the present application obtains the optimal display grayscale and brightness value based on the preset strategy, and calculates the initial voltage according to the optimal display grayscale and brightness value, which can ensure the optimal display effect of the picture, thereby improving the display picture quality;

[0057] Moreover, a key factor in the display quality of silicon-based liquid crystal is the flatness of the metal reflective layer surface. Only when the metal reflective layer is sufficiently flat can the light reflection path be accurately controlled, thereby obtaining the expected picture quality. However, in the manufacturing process of silicon-based liquid crystal, for example, polishing and grinding, there are inevitably structural errors, and the structural errors are not uniform values, but there are individual differences. Based on this, in the silicon-based liquid crystal manufacturing process, the embodiment of the present application separately detects and records the flatness of the metal reflective layer surface of each silicon-based liquid crystal, and constructs an evaluation function based on the recorded flatness, and then obtains the compensation voltage based on the evaluation function and the preset algorithm. Obviously, it can specifically eliminate the display picture quality defects caused by the structural errors in the manufacturing process.

[0058] It can be seen that the embodiments of the present application comprehensively consider multiple factors such as the lighting source, driving parameters and manufacturing structure characteristics, and can effectively improve the image quality of silicon-based liquid crystal displays.

[0059] In the embodiment of the present application, in step 1, the light emitted by the light source is homogenized and shaped, and irradiates the liquid crystal layer through a polarization beam splitter, wherein two fly-eye lenses can be used to homogenize the light emitted by the light source, specifically:

[0060] The first fly-eye lens collects light emitted from the light source, and the second fly-eye lens is arranged at an interval corresponding to the first fly-eye lens in the light emitting direction, so that each single eye of the first fly-eye lens is imaged to the single eye corresponding to the second fly-eye lens.

[0061] The compound eye lens is a bionic fly compound eye used in the light source processing of the projection system, which can make the illumination uniform and maintain high brightness. At the same time, this embodiment can not only achieve better uniform light effect by arranging two compound eye lenses at intervals based on the Köhler illumination principle, but also has good resolution within the range of 180°, thereby improving the display quality to a certain extent.

[0062] Among them, the compound eye lens can be made of optical glass, which has excellent properties such as high surface hardness and high impact resistance, and can meet the demanding light uniformity requirements.

[0063] In addition, after the light passes through the compound eye lens group, it can be collimated and shaped by a condenser.

[0064] In the embodiment of the present application, step 2, based on the preset strategy, obtains the optimal display grayscale and brightness value, and calculates the initial voltage according to the optimal display grayscale and brightness value, wherein, based on the preset strategy, obtaining the optimal display grayscale and brightness value may include the following steps:

[0065] Taking grayscale and brightness as optimization variables, a mathematical model between field order, field weight, display circuit common pole voltage and optimization variables is constructed. The mathematical model is used as the objective function model, and the preset algorithm is applied to solve the Pareto optimal solution set to obtain the optimal grayscale and brightness values.

[0066] For example, taking grayscale and brightness as optimization variables, constructing a mathematical model between field sequence, field weight, display circuit common electrode voltage and optimization variables may include the following steps:

[0067] Obtaining the grayscale and brightness of the display screen, and several groups of sample data between the field sequence, field weight, and the common electrode voltage of the display circuit;

[0068] The grayscale and brightness data of the display screen are respectively fitted with regression models to obtain corresponding regression equations of the grayscale and brightness of the display screen.

[0069] Obviously, the regression equation is a mathematical expression obtained through regression analysis based on sample data, which can accurately reflect the regression relationship between one variable (dependent variable) and another or a group of variables (independent variables). Therefore, the use of the regression equation can accurately reflect the relationship between the grayscale and brightness of the display screen and the field sequence, field weight, and common pole voltage of the display circuit.

[0070] For example, a preset algorithm is applied to solve the Pareto optimal solution set to obtain the optimal grayscale and brightness values, wherein the preset algorithm is a multi-objective optimization genetic algorithm, which may include the following steps:

[0071] Step 21, randomly generate an initial population of a certain size according to the preset algorithm parameter table and the grayscale and brightness parameter value space range of the display screen, and calculate the objective function value corresponding to the individuals in the initial population;

[0072] Step 22, according to the objective function values ​​corresponding to the individuals in the initial population, the individuals in the initial population are non-dominated and sorted, the dominance level of each individual in the initial population is determined, and then selection, crossover and mutation operations are performed to obtain a sub-population;

[0073] Step 23, merging the initial population with the sub-population to obtain a new population, performing non-dominated sorting on the new population to obtain the front-end individuals of the non-dominated solution, and calculating the individual crowding degree of the front-end individuals of the non-dominated solution;

[0074] Select N new individuals with high dominance level and high crowding degree as the first new individuals; randomly select some individuals from the initial population for mutation as the second new individuals;

[0075] The first new individual and the second new individual are merged into the initial population to form a new generation population; the new generation population is subjected to non-dominated sorting and individual crowding calculation, and then selection, crossover, and mutation operations are performed to obtain a new generation sub-population;

[0076] Step 24, determine whether the maximum number of algebraic times reaches the set upper limit. If it does, the operation stops and the final population individual is used as the optimal grayscale and brightness value. Otherwise, go to step 23 and calculate again.

[0077] Obviously, the above multi-objective optimization genetic algorithm can accurately and quickly screen out the optimal grayscale and brightness values ​​by selecting individuals with high dominance levels and high crowding degrees and merging them into the initial population through continuous iteration.

[0078] For example, step 21, according to the preset algorithm parameter table and the grayscale and brightness parameter value space range of the display screen, randomly generate an initial population with a certain size, and calculate the objective function value corresponding to the individuals in the initial population, wherein the preset algorithm parameter table is shown in Table 1, but is not limited to this, and can be specifically set as needed;

[0079] Table 1 Algorithm parameters:

[0080]

[0081] In the embodiment of the present application, step 3, according to the current flatness of the surface of the silicon-based liquid crystal metal reflective layer recorded in the silicon-based liquid crystal manufacturing process, an evaluation function is constructed, and a compensation voltage is obtained according to the evaluation function and a preset algorithm, wherein, according to the current flatness of the surface of the silicon-based liquid crystal metal reflective layer recorded in the silicon-based liquid crystal manufacturing process, the following steps may be included:

[0082] The silicon-based liquid crystal metal reflective layer is manufactured by a preset method, and in the process of manufacturing the silicon-based liquid crystal metal reflective layer, the flatness of the current silicon-based liquid crystal metal reflective layer surface is detected, and the flatness is associated and stored with the current silicon-based liquid crystal through a preset identity code, wherein the silicon-based liquid crystal metal reflective layer is manufactured by a preset method, and the following steps may be included:

[0083] Step 31, embedding a driving circuit on a silicon wafer substrate to obtain a driving circuit layer, setting an insulating layer on the driving circuit layer, and then depositing a metal reflective layer and a composite protective layer in sequence, wherein the composite protective layer includes a lower layer and an upper layer structure, wherein the lower layer is a soft layer in contact with the surface of the metal reflective layer, and the upper layer is a hard layer covering the surface of the lower layer;

[0084] Step 32, etching grooves in the composite protective layer, the metal reflective layer and the insulating layer so that the bottom of the grooves exposes the upper surface of the driving circuit layer;

[0085] Step 33, the trench is filled with a dielectric, and the dielectric is covered with a composite protective layer to obtain a dielectric layer;

[0086] Step 34, mechanically polishing the dielectric layer, and stopping when polishing reaches the upper layer of the composite protective layer;

[0087] Step 35, etching the lower layer of the composite protective layer to expose the upper surface of the metal reflective layer.

[0088] It is shown that by setting the composite protective layer to a double-layer structure, the upper layer can be a hard silicon nitride layer, and the lower layer can be a soft silicon dioxide layer. When the mechanical polishing reaches the upper hard layer of the composite protective layer, the mechanical polishing stops, so that the lower soft layer can play a protective role on the metal reflective layer, and then the lower layer of the composite protective layer is removed by etching, thereby effectively improving the flatness of the surface of the silicon-based liquid crystal metal reflective layer, and then effectively improving the display picture quality.

[0089] In addition, the flatness of the upper surface of the exposed metal reflective layer may be detected by a laser rangefinder method.

[0090] For example, according to the flatness of the surface of the metal reflective layer of the current LCOS recorded during the manufacturing process of LCOS, an evaluation function is constructed, and the compensation voltage is obtained according to the evaluation function and a preset algorithm, which may include the following steps:

[0091] The evaluation function is obtained according to the flatness of the upper surface of the metal reflective layer by using the ring energy method;

[0092] Set the random disturbance voltage with mean 0 and equal variance;

[0093] Positive and negative random disturbance voltages are applied to the silicon-based optical phased array chip, and two performance evaluation function values ​​are obtained according to the evaluation function.

[0094] According to the two performance evaluation function values ​​and the preset objective function calculation formula, the change amount of the objective function is obtained;

[0095] According to the change of the objective function and the preset expression, the voltage signal loaded on the electrode of the silicon-based optical phased array chip is calculated;

[0096] The corresponding light intensity distribution is obtained according to the current voltage signal. If the evaluation function corresponding to the current light intensity distribution is at a maximum value, the current voltage signal is used as the compensation voltage.

[0097] Obviously, the above compensation voltage calculation method has a small amount of calculation and the calculation result is reliable.

[0098] For example, the surrounding energy method is used to obtain an evaluation function according to the flatness of the upper surface of the metal reflective layer, wherein the evaluation function can be expressed by the following formula:

[0099] J=∫∫F(ξ, η)I(ξ, η)dξdη

[0100] In the above formula, J represents the surrounding energy, I(ξ, η) represents the light intensity distribution, and F(ξ, η) represents the flatness of the upper surface of the metal reflective layer.

[0101] For example, a random disturbance voltage with a mean of 0 and an equal variance is set, wherein the random disturbance voltage can be expressed by the following formula:

[0102]

[0103] In the above formula, k represents the number of iterations, δu (k) represents the random disturbance voltage, and N represents the number of array elements of the silicon-based optical phased array chip.

[0104] For example, according to the two performance evaluation function values ​​and the preset objective function calculation formula, the change amount of the objective function is obtained, wherein the preset objective function calculation formula can be expressed by the following formula:

[0105]

[0106] In the above formula, ΔJ (k) represents the change of the objective function, represents the performance evaluation function value obtained by applying a positive random disturbance voltage, Represents the performance evaluation function value obtained by applying a negative random disturbance voltage.

[0107] For example, according to the change amount of the objective function and the preset expression, the voltage signal loaded on the electrode of the silicon-based optical phased array chip is calculated, wherein the preset expression can be expressed by the following formula:

[0108] u (k+1) =u (k) +γδu (k) ΔJ (k)

[0109] In the above formula, k represents the number of iterations, u represents the voltage signal loaded on the electrode of the silicon-based optical phased array chip, ΔJ represents the change in the energy evaluation function, γ represents the gain coefficient, which may be 0.85, and δu represents the disturbance voltage.

[0110] In the embodiment of the present application, step 4, obtaining a driving voltage according to the initial voltage and the compensation voltage, controlling the light transmission performance of the liquid crystal layer according to the driving voltage, thereby adjusting the light incident on the metal reflective layer, the light is reflected by the metal reflective layer, and then passes through the liquid crystal layer and the polarization beam splitter to enter the projection light path, and the picture is displayed on the screen, and can also include:

[0111] Receive an application scenario selection signal, and determine a refresh mode matching the application scenario according to the application scenario selection signal, which may be:

[0112] In application scenarios where the intensity or modulation phase synchronization of the entire image is required to exceed a preset threshold, the global refresh mode is used; otherwise, the line-by-line refresh mode is used.

[0113] Obviously, the above settings can not only ensure the actual needs of the application scenario, but also save power consumption and reduce noise.

[0114] Figure 2 2 is a structural diagram of a terminal provided in an embodiment of the present application. As shown in the figure, the terminal 2 of the embodiment includes: at least one processor 20 ( Figure 2 Only one is shown in the figure), a memory 21, and a computer program 22 stored in the memory 21 and executable on the at least one processor 20, wherein the processor 20 implements the steps of any of the above-mentioned method embodiments when executing the computer program 22.

[0115] The terminal 2 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The terminal 2 may include, but is not limited to, a processor 20 and a memory 21. Those skilled in the art will appreciate that Figure 2 It is only an example of terminal 2 and does not constitute a limitation on terminal 2. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the terminal may also include input and output devices, network access devices, buses, etc.

[0116] The processor 20 may be a central processing unit, or other general-purpose processors, digital signal processors, application-specific integrated circuits, field programmable gate arrays or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0117] The memory 21 may be an internal storage unit of the terminal 2, such as a hard disk or memory of the terminal 2. The memory 21 may also be an external storage device of the terminal 2, such as a plug-in hard disk, a smart memory card, a secure digital card, a flash memory card, etc. equipped on the terminal 2. Further, the memory 21 may also include both an internal storage unit of the terminal 2 and an external storage device. The memory 21 is used to store the computer program and other programs and data required by the terminal. The memory 21 may also be used to temporarily store data that has been output or is to be output.

[0118] In a specific implementation, the terminal described in the embodiments of the present application includes, but is not limited to, other portable devices such as mobile phones, laptop computers, or tablet computers with touch-sensitive surfaces (e.g., touch screen displays and / or touch pads). It should also be understood that in some embodiments, the device is not a portable communication device, but a desktop computer with a touch-sensitive surface (e.g., touch screen displays and / or touch pads).

[0119] The terminal supports various applications, such as one or more of the following: a drawing application, a presentation application, a word processing application, a website creation application, a disk burning application, a spreadsheet application, a game application, a telephone application, a video conferencing application, an email application, an instant messaging application, a workout support application, a photo management application, a digital camera application, a digital camcorder application, a web browsing application, a digital music player application, and / or a digital video player application.

[0120] Various applications that can be executed on the terminal can use at least one common physical user interface device such as a touch-sensitive surface. One or more functions of the touch-sensitive surface and corresponding information displayed on the terminal can be adjusted and / or changed between applications and / or within corresponding applications. In this way, the common physical architecture of the terminal (e.g., the touch-sensitive surface) can support various applications with user interfaces that are intuitive and transparent to the user.

[0121] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0122] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0123] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0124] In the embodiments provided in the present application, it should be understood that the disclosed devices / terminals and methods can be implemented in other ways. For example, the device / terminal embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as 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 mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0125] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0126] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0127] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory, random access memory, electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electric carrier signals and telecommunication signals.

[0128] The present application implements all or part of the processes in the above-mentioned embodiment method, and may also be implemented through a computer program product. When the computer program product runs on a terminal, the terminal can implement the steps in the above-mentioned method embodiments when executing the computer program product.

[0129] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A liquid crystal on silicon reflective display method, characterized in that: include: The light emitted by the light source is homogenized and shaped, and then irradiates the liquid crystal layer through the polarization beam splitter; Based on the preset strategy, the optimal display grayscale and brightness value are obtained, and the initial voltage is calculated according to the optimal display grayscale and brightness value; An evaluation function is constructed according to the flatness of the surface of the metal reflective layer of the current LCOS recorded during the LCOS manufacturing process, and a compensation voltage is obtained according to the evaluation function and a preset algorithm; The driving voltage is obtained according to the initial voltage and the compensation voltage, and the light transmittance of the liquid crystal layer is controlled according to the driving voltage, thereby adjusting the light incident on the metal reflective layer. The light is reflected by the metal reflective layer, and then passes through the liquid crystal layer and the polarized beam splitter to enter the projection light path, and the picture is displayed on the screen.

2. The liquid crystal on silicon reflective display method according to claim 1, characterized in that: The light emitted by the light source is homogenized and shaped, and then irradiates the liquid crystal layer through a polarization beam splitter, wherein two fly-eye lenses are used to homogenize the light emitted by the light source, specifically: The first fly-eye lens collects light emitted from the light source, and the second fly-eye lens is arranged at an interval corresponding to the first fly-eye lens in the light emitting direction, so that each single eye of the first fly-eye lens is imaged to the single eye corresponding to the second fly-eye lens.

3. The liquid crystal on silicon reflective display method according to claim 1, characterized in that: The method of obtaining the optimal display grayscale and brightness value based on the preset strategy and calculating the initial voltage according to the optimal display grayscale and brightness value comprises the following steps: Taking grayscale and brightness as optimization variables, a mathematical model between field order, field weight, display circuit common pole voltage and optimization variables is constructed. The mathematical model is used as the objective function model, and the preset algorithm is applied to solve the Pareto optimal solution set to obtain the optimal grayscale and brightness values.

4. The liquid crystal on silicon reflective display method according to claim 3, characterized in that: The method of taking grayscale and brightness as optimization variables and constructing a mathematical model between field sequence, field weight, display circuit common electrode voltage and optimization variables comprises the following steps: Obtaining the grayscale and brightness of the display screen, and several groups of sample data between the field sequence, field weight, and the common electrode voltage of the display circuit; The grayscale and brightness data of the display screen are respectively fitted with regression models to obtain corresponding regression equations of the grayscale and brightness of the display screen.

5. The liquid crystal on silicon reflective display method according to claim 1, characterized in that: The evaluation function is constructed according to the current flatness of the surface of the silicon-based liquid crystal metal reflective layer recorded in the silicon-based liquid crystal manufacturing process, and the compensation voltage is obtained according to the evaluation function and the preset algorithm, wherein the flatness of the surface of the silicon-based liquid crystal metal reflective layer recorded in the silicon-based liquid crystal manufacturing process includes the following steps: A silicon-based liquid crystal metal reflective layer is manufactured by a preset method. During the manufacturing process of the silicon-based liquid crystal metal reflective layer, the flatness of the current silicon-based liquid crystal metal reflective layer surface is detected, and the flatness is associated and stored with the current silicon-based liquid crystal through a preset identity identification code.

6. The liquid crystal on silicon reflective display method according to claim 5, characterized in that: The method of manufacturing the silicon-based liquid crystal metal reflective layer by a preset method comprises the following steps: A driving circuit is embedded on a silicon wafer substrate to obtain a driving circuit layer, an insulating layer is arranged on the driving circuit layer, and then a metal reflective layer and a composite protective layer are deposited in sequence, wherein the composite protective layer comprises a lower layer and an upper layer, wherein the lower layer is a soft layer in contact with the surface of the metal reflective layer, and the upper layer is a hard layer covering the surface of the lower layer; The composite protection layer, the metal reflective layer and the insulating layer are etched to form grooves so that the bottom of the grooves exposes the upper surface of the driving circuit layer; The groove is filled with a dielectric, and the dielectric is covered with a composite protective layer to obtain a dielectric layer; The dielectric layer is subjected to mechanical polishing, and the polishing stops when the upper layer of the composite protective layer is polished; The lower layer of the composite protective layer is etched to expose the upper surface of the metal reflective layer.

7. The liquid crystal on silicon reflective display method according to claim 5, characterized in that: The method of constructing an evaluation function according to the flatness of the surface of the metal reflective layer of the current LCOS recorded during the LCOS manufacturing process and obtaining the compensation voltage according to the evaluation function and a preset algorithm includes the following steps: The evaluation function is obtained according to the flatness of the upper surface of the metal reflective layer by using the ring energy method; Set the random disturbance voltage with mean 0 and equal variance; Positive and negative random disturbance voltages are applied to the silicon-based optical phased array chip, and two performance evaluation function values ​​are obtained according to the evaluation function. According to the two performance evaluation function values ​​and the preset objective function calculation formula, the change amount of the objective function is obtained; According to the change of the objective function and the preset expression, the voltage signal loaded on the electrode of the silicon-based optical phased array chip is calculated; The corresponding light intensity distribution is obtained according to the current voltage signal. If the evaluation function corresponding to the current light intensity distribution is at a maximum value, the current voltage signal is used as the compensation voltage.

8. The liquid crystal on silicon reflective display method according to claim 7, characterized in that: The voltage signal loaded on the electrode of the silicon-based optical phased array chip is calculated based on the change amount of the objective function and the preset expression.

9. The liquid crystal on silicon reflective display method according to claim 1, characterized in that: The method obtains a driving voltage according to the initial voltage and the compensation voltage, controls the light transmission performance of the liquid crystal layer according to the driving voltage, thereby adjusting the light incident on the metal reflective layer, the light is reflected by the metal reflective layer, and then passes through the liquid crystal layer and the polarization beam splitter to enter the projection light path, and displays the picture on the screen, and also includes: An application scenario selection signal is received, and a refresh mode matching the application scenario is determined according to the application scenario selection signal.

10. The liquid crystal on silicon reflective display method according to claim 9, characterized in that: The receiving of the application scenario selection signal and determining the refresh mode matching the application scenario according to the application scenario selection signal is specifically: In application scenarios where the intensity or modulation phase synchronization of the entire image is required to exceed a preset threshold, the global refresh mode is used; otherwise, the line-by-line refresh mode is used.

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