Micro display device, control device and control system

Abstract

The application discloses a micro display device, a control device and a control system, and is characterized in that: by utilizing the principle that the piezoelectric ceramic can be used for high-precision positioning and actuation through the inverse piezoelectric effect of the piezoelectric ceramic, and the characteristic that a large displacement two-dimensional motion can be obtained after the piezoelectric ceramic shear piece is stacked, the two-dimensional motion of the micro display device is controlled through the displacement modulation of the piezoelectric ceramic, so that one pixel point of the micro display device can become nine projection pixel points, and the pixel array has the characteristic of a large pitch, thereby reducing the technical difficulty of adding a microlens or other light shaping structure for the micro display device such as a MicroLED when the micro display device is used for projection display; meanwhile, the resolution and the pixel density of the micro display device are significantly reduced, which is beneficial to improving the production yield and reducing the cost, and the piezoelectric ceramic regulation and control device has the characteristics of high positioning control precision, fast response, long service life, simple structure and the like.

Description

Technical Field

[0001] This invention relates to the field of microdisplay device technology, and in particular to a microdisplay device, control device and control system. Background Technology

[0002] In addition to traditional passive light-emitting devices such as DMDs (Digital Micromirror Devices) and LCOS (Liquid Crystal on Silicon) for projection displays, next-generation active light-emitting devices such as MicroLEDs (Micro Light Emitting Diodes) are considered to have great application prospects. However, regardless of the display principle, achieving 4K or higher resolution in microdisplay devices is extremely difficult and costly to produce. For DMDs, Texas Instruments (TI) proposed a technology called "galvanometer," which involves adding a movable optical lens to the projection optical path of the DMD device. The lens's movement transforms a single pixel on the DMD into two or four projected pixels. For example, using a dual-axis projection galvanometer can transform one pixel into four. With the cooperation of the DMD display driving circuit, a 2K DMD device can be upgraded to display 4K projection quality. However, this technology requires color wheel control and coordinated operation between the DMD drive and the galvanometer. Furthermore, it often suffers from uncontrollable lens tilt angles and poor precision during use, and it cannot further improve projection resolution.

[0003] For self-emissive microdisplay devices such as MicroLED, achieving 4K or higher resolutions is not only difficult, but also requires reshaping the pixel emission angle to improve the light coupling efficiency between the display device and the projection lens when used for projection displays, aiming for collimated emission. One possible solution is to add a microlens to each pixel. However, regardless of the method, the extremely high pixel density and tiny pixel pitch (typically only 1–3 μm) of microdisplay devices make it difficult to fabricate microlens arrays that prevent interference between pixels while satisfying optical reshaping requirements. This is another common technical challenge faced by the industry. Summary of the Invention

[0004] The purpose of this invention is to provide a micro-display device, control device, and control system to solve the problem of achieving high-resolution projection display using micro-display devices such as MicroLEDs. This invention utilizes the principle that the inverse piezoelectric effect of piezoelectric ceramics can be used for high-precision positioning and actuation, and the characteristic that large displacement two-dimensional motion can be obtained by stacking piezoelectric ceramic shear sheets. By modulating the displacement of the piezoelectric ceramics, the two-dimensional motion of the micro-display device is controlled, so that one pixel of the micro-display device can be transformed into nine projection pixels. Thus, it is possible to obtain high-resolution, high-definition projection images using only low-resolution, low-pixel-density micro-display devices.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] A microdisplay device is provided, comprising a plurality of rows and columns of pixels arranged in a matrix, wherein each pixel is a square with a side length of D, the side length of the effective light-emitting area of ​​the pixel is d, the edge of the pixel is also d, the spacing between adjacent pixels is 2d, and D = 3d.

[0007] A further embodiment is that the microdisplay device is any one of MicroLED, MicroOLED, or LCOS.

[0008] In another aspect, the present invention provides a micro-display device display control device, including a base, a first adhesive layer on the base, a piezoelectric ceramic positioner on the first adhesive layer, a second adhesive layer on the piezoelectric ceramic positioner, and a micro-display device on the second adhesive layer.

[0009] A further embodiment is that the piezoelectric ceramic positioner is a piezoelectric ceramic shear stack device. When a voltage is applied to its electrode lines X+ and X-, it will generate displacement along the X direction, and when a voltage is applied to its electrode lines Y+ and Y-, it will generate displacement along the Y direction.

[0010] A further embodiment is that the microdisplay device is a microdisplay device with a pixel arrangement structure;

[0011] The first adhesive layer and the second adhesive layer are thin adhesive layers formed by coating and curing a low-viscosity adhesive, wherein the low-viscosity adhesive is epoxy resin adhesive.

[0012] In another aspect, the present invention provides a micro-display device display control system, including a micro-display device, a piezoelectric ceramic positioner, a subframe decomposition module, and a positioning drive module;

[0013] The subframe decomposition module is used to decompose an input one-frame video image into nine subframes and input the subframe signals into the microdisplay device; at the same time, the subframe decomposition module outputs a synchronization signal that is synchronized with the subframes.

[0014] The positioning drive module is used to generate electrode control voltages to regulate the two-dimensional motion of the piezoelectric ceramic positioner. When movement is required along the X direction, the control voltage is output to electrodes X+ and X-. When movement is required along the Y direction, the control voltage is output to electrodes Y+ and Y-. The change of the control voltage is controlled by the synchronization signal output by the subframe decomposition module.

[0015] A further solution is that the subframe decomposition module decomposes the image into 9 low-resolution images from frame f0 to f8 by following the characteristics of “3n-2 rows, 3m-2 columns”, “3n-2 rows, 3m-1 columns”, “3n-2 rows, 3m columns”, “3n-1 rows, 3m columns”, “3n rows, 3m columns”, “3n rows, 3m-1 columns”, “3n rows, 3m-2 columns”, “3n-1 rows, 3m-2 columns”, and “3n-1 rows, 3m-1 columns”.

[0016] A further proposed approach includes the following control timing steps:

[0017] Step 1: During the first subframe f0, both control electrodes X+ and Y+ output positive voltages. The piezoelectric ceramic positioner simultaneously undergoes displacement along the positive X and positive Y directions, which is related to the magnitude of the control voltage. This causes the micro-display device to also translate in the positive X and positive Y directions, and pixel P shifts to position p0 to emit light.

[0018] Step 2: In the second subframe f1, the control electrode X+ outputs a voltage of 0V, and the control electrode Y+ outputs a positive voltage. The piezoelectric ceramic is in its original position in the X direction without displacement, but it is displaced in the positive Y direction, which drives the micro-display device to translate in the positive Y direction, and the pixel P shifts to the p1 position to emit light.

[0019] Step 3: In the third subframe f2, the control electrode X+ outputs a negative voltage and the control electrode Y+ outputs a positive voltage. The piezoelectric ceramic is simultaneously displaced in the negative X direction and the positive Y direction, which drives the micro-display device to also translate in the negative X direction and the positive Y direction. Pixel P shifts to position p2 and emits light.

[0020] Step 4: At the fourth subframe f3, the control electrode X+ outputs a negative voltage, and the control electrode Y+ outputs a voltage of 0V. The piezoelectric ceramic is displaced in the negative X direction, and remains in its original position in the Y direction without displacement. This causes the micro-display device to translate in the negative X direction, and pixel P shifts to position p3 to emit light.

[0021] Step 5: At the fifth subframe f4, both control electrodes X+ and Y+ output negative voltages, and the piezoelectric ceramic is simultaneously displaced in the negative X and Y directions, causing the micro-display device to also translate in the negative X and Y directions, and pixel P shifts to position p4 to emit light;

[0022] Step 6: At the sixth subframe f5, the control electrode X+ outputs a voltage of 0V, and the control electrode Y+ outputs a negative voltage. The piezoelectric ceramic is in its original position in the X direction without displacement, but it is displaced in the negative Y direction, which drives the micro-display device to translate in the negative Y direction. Pixel P shifts to position p5 and emits light.

[0023] Step 7: At the seventh subframe f6, the control electrode X+ outputs a positive voltage and the control electrode Y+ outputs a negative voltage. The piezoelectric ceramic is simultaneously displaced in the positive X direction and the negative Y direction, which drives the micro-display device to also translate in the positive X direction and the negative Y direction. Pixel P shifts to position p6 and emits light.

[0024] Step 8: At the eighth subframe f7, the control electrode X+ outputs a positive voltage, the control electrode Y+ outputs a voltage of 0V, the piezoelectric ceramic is displaced in the positive X direction, and remains in its original position in the Y direction without displacement, which drives the micro-display device to translate in the positive X direction, and the pixel P shifts to the p7 position to emit light.

[0025] Step 9: At the ninth subframe f8, the control electrodes X+ and Y+ both output voltage 0V, the piezoelectric ceramic is in its original position without displacement in both the X and Y directions, the micro-display device is in its original position without translation, and the pixel P returns to its original position p8 to emit light.

[0026] Step 10: When the first subframe of the next frame arrives, both control electrodes X+ and Y+ output positive voltages, and the pixel P of the microdisplay device shifts to position p1 to emit light, starting the display control cycle of the new frame image.

[0027] A further embodiment is that the distance by which the microdisplay device moves in a controlled manner along the X and / or Y directions is the side length d of the effective light-emitting area of ​​the pixel of the microdisplay device.

[0028] The final aspect of the present invention also provides a projector, including the microdisplay device described above, the microdisplay device display control device described above, and the microdisplay device display control system described above.

[0029] The beneficial effects of this invention are as follows:

[0030] This invention discloses a micro-display device, control device, and control system. Utilizing the inverse piezoelectric effect of piezoelectric ceramics for high-precision positioning and actuation, and the characteristic of achieving large-displacement two-dimensional motion by stacking sheared piezoelectric ceramic sheets, the two-dimensional motion of the micro-display device is controlled by modulating the displacement of the piezoelectric ceramics. This allows one pixel of the micro-display device to be transformed into nine projected pixels, and the pixel array features a large spacing. This reduces the technical difficulty of adding microlenses and other light-shaping structures when using MicroLED and other micro-display devices for projection displays. Simultaneously, this invention significantly reduces the resolution and pixel density of the micro-display device, which is beneficial for improving production yield and reducing costs. Furthermore, the piezoelectric ceramic control device features high positioning control accuracy, fast response, long lifespan, and simple structure. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A schematic diagram of the pixel arrangement structure of the microdisplay device of the present invention;

[0033] Figure 2 A schematic diagram of the structure of the projection display control device of the present invention;

[0034] Figure 3 Circuit block diagram of the display control device of the present invention;

[0035] Figure 4 The control timing of the display control device described in this invention;

[0036] Figure 5 A schematic diagram illustrating how one pixel projects nine pixels according to the present invention;

[0037] Figure 6 A schematic diagram of the 2x2 pixel array displaying a 6x6 pixel image according to the present invention. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0039] In any embodiment, such as Figure 1-6 As shown, the present invention provides a micro-display device, control device, and control system, comprising:

[0040] A microdisplay device for achieving high-resolution projection display, wherein the pixel arrangement structure is as follows: Figure 1 For simplicity, only a 2x2 pixel array is used as an example. The microdisplay device consists of several rows and columns of pixels arranged in a matrix. Each pixel is a square with a side length of D. The side length of the effective light-emitting area of ​​the pixel is d, and the pixel edge is also d. The spacing between adjacent pixels is 2d, and D = 3d. This embodiment is a 0.7-inch MicroLED microdisplay device with a resolution of 1280x720 (i.e., 720P resolution). The pixel side length D is 12µm, the side length d of the effective light-emitting area of ​​the pixel is 4µm, the pixel edge size is also 4µm, and the spacing between adjacent pixels is 8µm.

[0041] A display control device for achieving high-resolution projection display, such as Figure 2 The invention includes a MicroLED microdisplay device 1 with a pixel arrangement structure, an adhesive layer 2, a piezoelectric ceramic positioner 3, an adhesive layer 4, and a base 5. The base 5 has a first adhesive layer 4, the first adhesive layer 4 has a piezoelectric ceramic positioner 3, the piezoelectric ceramic positioner 3 has a second adhesive layer 2, and the second adhesive layer 2 has the microdisplay device 1. The microdisplay device 1 is a microdisplay device with a pixel arrangement structure.

[0042] The adhesive layers 2 and 4 are thin adhesive layers formed by coating and curing with a low-viscosity adhesive, preferably epoxy resin. The piezoelectric ceramic positioner 3 is a piezoelectric ceramic shear stack device capable of generating two-dimensional motion along the X and Y directions. In this embodiment, a NAC2903-H4.2 type piezoelectric ceramic shear stack is selected. This device has external dimensions of 10 × 10 × 4.2 mm (length, width, and height), a maximum displacement of 5 μm in both the X direction (length direction) and Y direction (width direction), a response time of 25 ns, a displacement control accuracy of 0.1 nm, and a maximum electrode driving voltage of ±120 V. The displacement characteristics fully meet the motion control requirements of the micro-display device. Epoxy resin is coated on the upper surface of the piezoelectric ceramic positioner, and its length and width directions are aligned with the length and width directions of the MicroLED micro-display device, respectively. The piezoelectric ceramic positioner is then bonded and fixed to the center of the back (non-light-emitting surface) of the MicroLED micro-display device to form an assembly. Then, epoxy resin is applied to the upper surface of the base 5, and the assembly of the MicroLED micro-display device and the piezoelectric ceramic positioner is bonded and fixed to the base.

[0043] A circuit block diagram of a display control device is shown below. Figure 3 The invention includes a MicroLED microdisplay device with the pixel arrangement structure described in this invention, the piezoelectric ceramic positioner, a positioning driving module, and a subframe decomposition module. The subframe decomposition module decomposes one frame of the input high-resolution video signal Data_In into nine low-resolution subframes, which are input to the microdisplay device via the signal interface Data_Out. Simultaneously, the subframe decomposition module outputs a synchronization signal Vsyc synchronized with the nine subframes. The positioning driving module generates electrode voltages to regulate the two-dimensional motion of the piezoelectric ceramic positioner. When motion is required along the X direction, it outputs control voltages to electrodes X+ and X-; when motion is required along the Y direction, it outputs control voltages to electrodes Y+ and Y-. The switching of motion direction is controlled by the synchronization signal Vsyc output by the subframe decomposition module.

[0044] The subframe decomposition module uses the following method: A single high-resolution original image is sequentially decomposed into nine low-resolution images according to the following sequence: "3n-2 rows, 3m-2 columns", "3n-2 rows, 3m-1 columns", "3n-2 rows, 3m columns", "3n-1 rows, 3m columns", "3n rows, 3m columns", "3n rows, 3m-1 columns", "3n rows, 3m-2 columns", "3n-1 rows, 3m-2 columns", and "3n-1 rows, 3m-1 columns". Each subframe is then sequentially input to the microdisplay device via the Data_Out signal interface. In this embodiment, n = 1–3840, m = 1–2160, the resolution of the original image Data_In is 3840 x 2160 (i.e., 4K resolution), and the resolution of the nine decomposed subframe Data_Out signals is 1280 x 720 (720P resolution). The resolution of the subframe signals is consistent with the resolution of the MicroLED microdisplay device.

[0045] The control timing of a display control device is as follows: Figure 4 The control electrode X- is the inverse polarity signal of X+, and Y- is the inverse polarity signal of Y+. For simplicity, only the waveforms of X+ and Y+ are shown in the figure, and the following description will only focus on the control electrodes X+ and Y+. A frame F0 of the 4K resolution Data_In signal is decomposed into nine subframes F0 to F8 with a resolution of 720P. The synchronization signal corresponding to each subframe is Vsyc, and the level changes of the control electrodes X+ and Y+ are synchronized with the synchronization signal Vsyc in timing. The spatial displacement of any pixel on the MicroLED microdisplay device in each subframe is as follows: Figure 5During the first subframe f0, both control electrodes X+ and Y+ output positive voltages, which in this embodiment are both +90V. The upper surface of the piezoelectric ceramic positioner (the contact surface with the MicroLED microdisplay device) undergoes a 4µm displacement simultaneously along the positive X and Y directions (i.e., a tensile displacement along both the X and Y directions), causing the MicroLED microdisplay device to also translate 4µm in both the positive X and Y directions, and pixel P shifts to position p0 to emit light. During the second subframe f1, the control electrode X+ outputs a voltage of 0V, and the control electrode Y+ outputs a positive voltage of +90V. The piezoelectric ceramic remains in its original position without displacement in the X direction, but undergoes displacement in the positive Y direction, causing the microdisplay device to move in the positive Y direction. In the first subframe (f2), the piezoelectric ceramic shifts to position p1 and emits light. In the second subframe (f3), the control electrode X+ outputs a negative voltage of -90V, and the control electrode Y+ outputs a positive voltage of +90V. The piezoelectric ceramic shifts simultaneously in both the negative X and positive Y directions, causing the microdisplay device to also shift in both directions, and pixel P shifts to position p2 and emits light. In the third subframe (f4), the control electrode X+ outputs a negative voltage of -90V, and the control electrode Y+ outputs 0V. The piezoelectric ceramic shifts in the negative X direction but remains in its original position in the Y direction, causing the microdisplay device to shift in the negative X direction, and pixel P shifts to position p3 and emits light. In the fifth subframe (f4), both the control electrodes X+ and Y+ output a negative voltage of -90V. At 0V, the piezoelectric ceramic simultaneously displaces in both the negative X and Y directions, causing the micro-display device to also translate in both directions, and pixel P shifts to position p4 to emit light. In the sixth subframe f5, the control electrode X+ outputs 0V, and the control electrode Y+ outputs a negative voltage of -90V. The piezoelectric ceramic remains in its original position in the X direction without displacement, but displaces in the negative Y direction, causing the micro-display device to translate in the negative Y direction, and pixel P shifts to position p5 to emit light. In the seventh subframe f6, the control electrode X+ outputs a positive voltage of +90V, and the control electrode Y+ outputs a negative voltage of -90V. The piezoelectric ceramic simultaneously displaces in both the positive X and negative Y directions, causing the micro-display device to also shift in both directions. In the first subframe (f7), the piezoelectric ceramic shifts to position p6 and emits light. In the second subframe (f8), the control electrode X+ outputs a positive voltage of +90V, and the control electrode Y+ outputs a voltage of 0V. The piezoelectric ceramic shifts in the positive X direction but remains in its original position in the Y direction, causing the microdisplay device to shift in the positive X direction and the pixel P to position p7 and emit light. In the third subframe (f8), both the control electrodes X+ and Y+ output a voltage of 0V. The piezoelectric ceramic remains in its original position in both the X and Y directions without shifting, and the microdisplay device remains in its original position without shifting. The pixel P returns to its original position p8 and emits light. After all nine subframes have been displayed, the display control cycle for the next frame begins when the first subframe of the next frame arrives.

[0046] The distance the MicroLED microdisplay device is translated along the X and / or Y directions is 4 μm, which is equal to the length d of the effective light-emitting area of ​​the pixel of the microdisplay device.

[0047] As in the above embodiments, Figure 1 The microdisplay device with the pixel arrangement structure shown, through the shift control of the display control device described in this invention, will form a 2x2 pixel array composed of four pixels P0 to P3 in space. Figure 6 The image shown is a 6x6 pixel array consisting of 36 pixels, from Px0 to Px8. For this purpose, a video input image with a resolution of 3840x2160 is converted into nine subframes with a resolution of 1280x720 by a subframe decomposition module. Then, under the motion control of a piezoelectric ceramic positioner, a MicroLED microdisplay device with a resolution of 1280x720 allows each physical pixel of the MicroLED microdisplay device to display nine adjacent image pixels in a time-division manner. Finally, the spatial aliasing of the nine subframes yields the original image with a resolution of 3840x2160. This solves the problem of displaying high-resolution images using low-resolution MicroLED microdisplay devices. Furthermore, the pixel array of the pixel arrangement structure described in this invention has a large spacing, which not only reduces the manufacturing process difficulty of the microdisplay device but also provides the technical conditions for adding light-shaping structures such as microlenses to the pixel array to meet the collimation and light emission requirements of projection displays.

[0048] The present invention also provides a projector, the projector comprising a microdisplay device, a display control device, and a display control system according to the pixel arrangement structure described above.

[0049] Furthermore, the pixel shape described in this invention is not limited to the square shape in the embodiments, but also includes other shapes such as rectangles and circles.

[0050] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims. It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. Furthermore, various different embodiments of the present invention can also be arbitrarily combined, as long as they do not violate the spirit of the present invention, they should also be considered as the content disclosed in the present invention.

Claims

1. A display control system for a microdisplay device, characterized in that, This includes microdisplay devices, piezoelectric ceramic positioners, subframe decomposition modules, and positioning drive modules; The microdisplay device consists of several rows and columns of pixels arranged in a matrix. Each pixel is a square with a side length of D. The side length of the effective light-emitting area of ​​the pixel is d, the edge of the pixel is also d, the spacing between adjacent pixels is 2d, and D=3d. The piezoelectric ceramic positioner is a piezoelectric ceramic shear stack device. When a voltage is applied to its electrode lines X+ and X-, it will generate displacement along the X direction. When a voltage is applied to its electrode lines Y+ and Y-, it will generate displacement along the Y direction. The subframe decomposition module is used to decompose an input one-frame video image into nine subframes and input the subframe signals into the microdisplay device; at the same time, the subframe decomposition module outputs a synchronization signal that is synchronized with the subframes. The positioning drive module is used to generate electrode control voltages to regulate the two-dimensional motion of the piezoelectric ceramic positioner. When movement is required along the X direction, the control voltage is output to electrodes X+ and X-. When movement is required along the Y direction, the control voltage is output to electrodes Y+ and Y-. The change of the control voltage is controlled by the synchronization signal output by the subframe decomposition module.

2. The microdisplay device display control system as described in claim 1, characterized in that, The microdisplay device is any one of MicroLED, MicroOLED, and LCOS.

3. The microdisplay device display control system as described in claim 1, characterized in that, A microdisplay device display control device includes a base, a first adhesive layer on the base, a piezoelectric ceramic positioner on the first adhesive layer, a second adhesive layer on the piezoelectric ceramic positioner, and a microdisplay device on the second adhesive layer.

4. The microdisplay device display control system as described in claim 3, characterized in that, The microdisplay device is a microdisplay device with a pixel arrangement structure; The first adhesive layer and the second adhesive layer are thin adhesive layers formed by coating and curing a low-viscosity adhesive, wherein the low-viscosity adhesive is epoxy resin adhesive.

5. A microdisplay device display control system as described in claim 1, characterized in that, The subframe decomposition module decomposes the image into 9 low-resolution images (f0 to f8) in sequence according to the following characteristics: "3n-2 rows, 3m-2 columns", "3n-2 rows, 3m-1 columns", "3n-2 rows, 3m columns", "3n-1 rows, 3m columns", "3n rows, 3m columns", "3n rows, 3m-1 columns", "3n rows, 3m-2 columns", "3n-1 rows, 3m-2 columns", "3n-1 rows, 3m-1 columns".

6. A microdisplay device display control system as described in claim 1 or 5, characterized in that, Its control timing includes the following steps: Step 1: During the first subframe f0, both control electrodes X+ and Y+ output positive voltages. The piezoelectric ceramic positioner simultaneously undergoes displacement along the positive X and positive Y directions, which is related to the magnitude of the control voltage. This causes the micro-display device to also translate in the positive X and positive Y directions, and pixel P shifts to position p0 to emit light. Step 2: In the second subframe f1, the control electrode X+ outputs a voltage of 0V, and the control electrode Y+ outputs a positive voltage. The piezoelectric ceramic is in its original position in the X direction without displacement, but it is displaced in the positive Y direction, which drives the micro-display device to translate in the positive Y direction, and the pixel P shifts to the p1 position to emit light. Step 3: In the third subframe f2, the control electrode X+ outputs a negative voltage and the control electrode Y+ outputs a positive voltage. The piezoelectric ceramic is simultaneously displaced in the negative X direction and the positive Y direction, which drives the micro-display device to also translate in the negative X direction and the positive Y direction. Pixel P shifts to position p2 and emits light. Step 4: At the fourth subframe f3, the control electrode X+ outputs a negative voltage, and the control electrode Y+ outputs a voltage of 0V. The piezoelectric ceramic is displaced in the negative X direction, and remains in its original position in the Y direction without displacement. This causes the micro-display device to translate in the negative X direction, and pixel P shifts to position p3 to emit light. Step 5: At the fifth subframe f4, both control electrodes X+ and Y+ output negative voltages, and the piezoelectric ceramic is simultaneously displaced in the negative X and Y directions, causing the micro-display device to also translate in the negative X and Y directions, and pixel P shifts to position p4 to emit light; Step 6: At the sixth subframe f5, the control electrode X+ outputs a voltage of 0V, and the control electrode Y+ outputs a negative voltage. The piezoelectric ceramic is in its original position in the X direction without displacement, but it is displaced in the negative Y direction, which drives the micro-display device to translate in the negative Y direction. Pixel P shifts to position p5 and emits light. Step 7: At the seventh subframe f6, the control electrode X+ outputs a positive voltage and the control electrode Y+ outputs a negative voltage. The piezoelectric ceramic is simultaneously displaced in the positive X direction and the negative Y direction, which drives the micro-display device to also translate in the positive X direction and the negative Y direction. Pixel P shifts to position p6 and emits light. Step 8: At the eighth subframe f7, the control electrode X+ outputs a positive voltage, the control electrode Y+ outputs a voltage of 0V, the piezoelectric ceramic is displaced in the positive X direction, and remains in its original position in the Y direction without displacement, which drives the micro-display device to translate in the positive X direction, and the pixel P shifts to the p7 position to emit light. Step 9: At the ninth subframe f8, the control electrodes X+ and Y+ both output voltage 0V, the piezoelectric ceramic is in its original position without displacement in both the X and Y directions, the micro-display device is in its original position without translation, and the pixel P returns to its original position p8 to emit light. Step 10: When the first subframe of the next frame arrives, both control electrodes X+ and Y+ output positive voltages, and the pixel P of the microdisplay device shifts to position p1 to emit light, starting the display control cycle of the new frame image.

7. A microdisplay device display control system as described in claim 1 or 5, characterized in that, The distance that the microdisplay device moves in a controlled manner along the X and / or Y directions is the side length d of the effective light-emitting area of ​​the pixel of the microdisplay device.

8. A projector, characterized in that, The microdisplay device display control system includes any one of claims 1-7.

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