Display panel composite structure, micro optical projector and electronic device

Abstract

A display panel assembly structure, a micro-projection optical engine, and an electronic device are disclosed, relating to the field of display technology. The display panel assembly structure includes: a first micro-display panel having at least two first connector portions, which are electrically connected to each other via first electrical connectors; at least two second micro-display panels, each having a second connector portion; the at least two first connector portions of the first micro-display panel can be electrically connected to the second connector portions of the at least two second micro-display panels. By distributing at least two electrical connection points of the at least three micro-display panels on different sides, the problem of occupying a large area by placing multiple electrical connection points on the same side can be avoided, thus reducing the assembly volume of the electronic device and facilitating miniaturization.

Description

Technical Field

[0001] This invention relates to the field of display, and in particular to a display panel assembly structure, a micro-projection optical engine, and an electronic device. Background Technology

[0002] In recent years, with the continuous development of Micro LED (Micro Light Emitting Diode Display) technology, more and more electronic devices have begun to use Micro LED technology, bringing great convenience to people's lives.

[0003] Currently, in practical applications, micro-display panels composed of Micro LEDs typically need to be assembled with lenses and other structures to form an optomechanical (or light engine) structure. Solving the assembly problem between the micro-display panel and the lens / other structures is one of the urgent issues that needs to be addressed.

[0004] Furthermore, with the miniaturization of electronic devices, the miniaturization of the optical engine structure in micro-projection optical engines has also become a trend. Especially in wearable electronic devices, the miniaturization and weight reduction of micro-projection optical engines are among the urgent problems to be solved. Summary of the Invention

[0005] The technical problem solved by this invention is to provide a display panel assembly structure, a micro-projection optical engine, and an electronic device to reduce the assembly size of the electronic device.

[0006] To address the aforementioned problems, the present invention provides a display panel assembly structure, comprising: a first micro-display panel having at least two first connector portions, different first connector portions being electrically connected to each other via first electrical connectors; at least two second micro-display panels, each second micro-display panel having a second connector portion; the at least two first connector portions of the first micro-display panel being electrically connected to the second connector portions of the at least two second micro-display panels; and the light emission paths of the first micro-display panel and the at least two second micro-display panels being able to correspond to at least three light incident surfaces of a light combining component.

[0007] Optionally, the first micro-display panel further includes: a first display unit, wherein the first display unit and any one of the first connector units are electrically connected via the first electrical connector; the second micro-display panel further includes: a second display unit, wherein the second display unit and the second connector unit are electrically connected via a second electrical connector.

[0008] Optionally, the first connector portion includes a first connector; the second connector portion includes a second connector.

[0009] Optionally, either the first microdisplay panel or the at least two second microdisplay panels may further include an external connector, which is disposed on a different and opposite surface from the first connector corresponding to the first microdisplay panel, or on a different and opposite surface from the second connector corresponding to the second microdisplay panel.

[0010] Optionally, both the first electrical connector and the second electrical connector are flexible circuit boards.

[0011] Optionally, the first micro-display panel and the at least two second micro-display panels are all in a folded state.

[0012] Optionally, one or more of the first micro-display panel and the at least two second micro-display panels are in an unfolded state.

[0013] Optionally, when the external connector is disposed on any one of the second micro-display panels, the corresponding second micro-display panel is in a folded state, and the second display part of the second micro-display panel and the external connector are stacked.

[0014] Optionally, when the external connector is disposed on any one of the second micro-display panels, the corresponding second micro-display panel is in a bent state, and the second display part of the corresponding second micro-display panel and the external connector are distributed on different sides.

[0015] Optionally, when the first micro-display panel or the second micro-display panel with the external connector is in an unfolded state, the first display part of the first micro-display panel and the external connector are distributed on different sides, or the second display part of the second micro-display panel and the external connector are distributed on different sides.

[0016] Optionally, the second display portion of the second micro-display panel and the external connector are distributed on different sides perpendicular to each other.

[0017] Optionally, the first display portion of the first microdisplay panel and the external connector are distributed on different and opposite sides, or the second display portion of the second microdisplay panel and the external connector are distributed on different and opposite sides.

[0018] Accordingly, the present invention also provides a micro-projection optical engine, comprising: a first micro-display panel having at least two first connector portions, different first connector portions being electrically connected to each other via first electrical connectors; at least two second micro-display panels, each second micro-display panel having a second connector portion; the at least two first connector portions of the first micro-display panel being electrically connected to the second connector portions of the at least two second micro-display panels; and a light combining component, the light combining component comprising a light emitting surface and at least three light incident surfaces; the first micro-display panel and the at least two second micro-display panels surrounding the light combining component, the light emitting paths of the first micro-display panel and the at least two second micro-display panels corresponding to the at least three light incident surfaces of the light combining component, and light emitted by the first micro-display panel and the at least two second micro-display panels entering the light combining component through the at least three light incident surfaces and exiting through the light emitting surface.

[0019] Optionally, the first micro-display panel further includes: a first display unit, wherein the first display unit and any one of the first connector units are electrically connected via the first electrical connector; the second micro-display panel further includes: a second display unit, wherein the second display unit and the second connector unit are electrically connected via a second electrical connector.

[0020] Optionally, light is emitted from the first display portion of the first microdisplay panel and the second display portion of the second microdisplay panel.

[0021] Optionally, the first connector portion includes a first connector; the second connector portion includes a second connector.

[0022] Optionally, either the first microdisplay panel or the at least two second microdisplay panels may further include an external connector, which is disposed on a different and opposite surface from the first connector corresponding to the first microdisplay panel, or on a different and opposite surface from the second connector corresponding to the second microdisplay panel.

[0023] Optionally, both the first electrical connector and the second electrical connector are flexible circuit boards.

[0024] Optionally, when the external connector is disposed on any one of the second micro-display panels, the corresponding second micro-display panel is in a folded state, and the second display part of the second micro-display panel and the external connector are stacked.

[0025] Optionally, when the external connector is disposed on any one of the second micro-display panels, the corresponding second micro-display panel is in a bent state, and the second display part of the corresponding second micro-display panel and the external connector are distributed on different sides.

[0026] Optionally, the second display portion of the second micro-display panel and the external connector are distributed on different sides perpendicular to each other.

[0027] Optionally, it may also include: a lens assembly, which corresponds to the light-emitting surface, wherein the light emitted from the light-emitting surface passes through the lens assembly and is emitted to the outside, and the lens assembly is used to collimate the light emitted from the light-emitting surface.

[0028] Optionally, it also includes: a mounting frame having an installation space, wherein the light combining component is assembled and fixed within the installation space.

[0029] Optionally, the side of the mounting frame is provided with a light-emitting port and at least three light-in ports communicating with the mounting space; the at least three light-in surfaces correspond to the at least three light-in ports, and the light-emitting surfaces correspond to the light-emitting ports; the display parts of the at least three micro-display panels correspond one-to-one with the at least three light-in ports of the mounting frame.

[0030] Optionally, the display portions of the at least three micro-display panels are respectively fixedly connected to the side of the mounting frame with the light inlet; the lens assembly corresponds to the light outlet of the mounting frame, and the lens assembly is fixedly connected to the side of the mounting frame with the light outlet.

[0031] Optionally, along the light-emitting direction of the lens assembly, the thickness of the lens assembly is less than half the width of the mounting frame.

[0032] Optionally, the diameter of the lens assembly is greater than half the length of the mounting frame, and the diameter of the lens assembly is less than the length of the mounting frame, with the length of the mounting frame perpendicular to the light emission direction of the lens assembly.

[0033] Optionally, each light inlet has a guide angle at its edge to provide a guide for the installation space.

[0034] Optionally, along the side direction perpendicular to the mounting frame, the projected area of ​​each electrical connection position is located within the side area of ​​the mounting frame opposite to the electrical connection position.

[0035] Accordingly, the present invention also provides an electronic device, including a micro-projection optical engine as described in any of the above technical solutions.

[0036] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0037] In the display panel assembly structure of the present invention, at least two first connector portions of the first micro-display panel can be electrically connected to at least two second connector portions of the second micro-display panel, so that at least two electrical connection positions formed by the electrical connection can be distributed on different sides. This avoids the problem of occupying a large area by setting multiple electrical connection positions on the same side, reduces the space required for the electronic device to accommodate the display panel assembly structure, and facilitates the miniaturization of the electronic device.

[0038] Furthermore, when the external connector is mounted on any one of the second micro-display panels, the corresponding second micro-display panel is folded in half, and the second display portion of the second micro-display panel and the external connector are stacked. By folding the second micro-display panels in half, the volume of the display panel assembly structure can be further reduced.

[0039] Furthermore, when the external connector is placed on any one of the second micro-display panels, the corresponding second micro-display panel is in a bent state, and the second display part and the external connector are distributed on different sides of the corresponding second micro-display panel. By placing the external connector on a different side from the second display part, the external connector can be fully exposed, thereby facilitating the electrical connection between the external test device and the external connector to complete the testing of the display panel assembly structure.

[0040] In the micro-projection optical engine of the present invention, by surrounding the light-combining component with a first micro-display panel and at least two second micro-display panels, the space occupied by the light-combining component and the micro-display panel as a whole can be effectively reduced, which is beneficial to reducing the size of the micro-projection optical engine. Furthermore, at least two first connector portions of the first micro-display panel are electrically connected to corresponding second connector portions of at least two second micro-display panels, allowing at least two electrical connection points to be distributed on different sides. This avoids the problem of occupying a large area by placing multiple electrical connection points on the same side, reducing the space required to accommodate the micro-projection optical engine in the electronic device, and facilitating the miniaturization of the electronic device.

[0041] Furthermore, when the external connector is mounted on any one of the second micro-display panels, the corresponding second micro-display panel is folded in half, and the second display portion of the second micro-display panel and the external connector are stacked. By folding the second micro-display panels in half, the volume of the display panel assembly structure can be further reduced.

[0042] Furthermore, when the external connector is placed on any one of the second micro-display panels, the corresponding second micro-display panel is in a bent state, and the second display part and the external connector are distributed on different sides of the corresponding second micro-display panel. By placing the external connector on a different side from the second display part, the external connector can be fully exposed, thereby facilitating the electrical connection between the external test device and the external connector to complete the testing of the display panel assembly structure.

[0043] Furthermore, it also includes: a mounting frame with an installation space within which the light combining component is assembled and fixed. The mounting frame protects the light combining component, reducing damage during use and improving the overall strength and durability of the micro-projection optical engine.

[0044] Furthermore, along the light-emitting direction of the lens assembly, the thickness of the lens assembly is less than half the width of the mounting frame. Since the size of the light-combining assembly cannot be further compressed, further reducing the size of the lens assembly helps to reduce the size of the micro-projection optical engine.

[0045] Furthermore, the diameter of the lens assembly is greater than half the length of the mounting frame, while the diameter of the lens assembly is less than the length of the mounting frame, and the direction of the length of the mounting frame is perpendicular to the light emission direction of the lens assembly. When the diameter of the lens assembly is less than half the length of the mounting frame, the light transmission and brightness of the micro-projection optical engine are insufficient, thus failing to meet the basic application requirements of electronic devices (such as AR products). When the diameter of the lens assembly is greater than the length of the mounting frame, the connection between the lens assembly and the mounting frame is poor, reducing the strength of the micro-projection optical engine.

[0046] Furthermore, each light inlet has guide angles at its edge to guide the mounting space. These guide angles facilitate guiding each display unit to its corresponding light inlet surface. After the display unit is assembled with its corresponding light inlet, the guide angles create a gap, which allows for the application of adhesive when fixing the display unit to the mounting frame. This results in better adhesion between the display unit and the mounting frame, thereby improving the overall strength of the micro-projection optical engine.

[0047] Furthermore, along the side direction perpendicular to the mounting frame, the projection area of ​​each electrical connection point is located within the side area of ​​the mounting frame opposite the electrical connection point. This further ensures that the micro-display panel corresponding to each electrical connection point does not have a maximum area size issue in a single region, thereby reducing the space required by the electronic device to accommodate the micro-projection optical engine, which is beneficial for the miniaturization of electronic devices. Attached Figure Description

[0048] Figure 1 This is a three-dimensional structural diagram of a micro-projection optical engine from a first-view perspective according to an embodiment of the present invention;

[0049] Figure 2 This is a three-dimensional structural diagram of the micro-projection optical engine from a second perspective according to an embodiment of the present invention;

[0050] Figure 3 This is an exploded view of the light combining component and the micro display panel in a micro projection optical engine according to an embodiment of the present invention;

[0051] Figure 4 yes Figure 1 Side view of the micro-projection optical mechanism along direction A;

[0052] Figure 5 This is a front view of the unfolded first micro-display panel in a micro-projection optical engine according to an embodiment of the present invention;

[0053] Figure 6 This is a schematic diagram of the unfolded back of the first micro-display panel in a micro-projection optical engine according to an embodiment of the present invention;

[0054] Figure 7 This is a front view of one of the second micro-display panels in a micro-projection optical engine according to an embodiment of the present invention;

[0055] Figure 8 This is a front view of the unfolded second micro-display panel in a micro-projection optical engine according to an embodiment of the present invention;

[0056] Figure 9 This is a schematic diagram of the unfolded back of another second micro-display panel in a micro-projection optical engine according to an embodiment of the present invention;

[0057] Figure 10 This is a schematic diagram of the projection principle structure of a micro-projection optical engine according to an embodiment of the present invention;

[0058] Figure 11 yes Figure 1 Side view of the micro-projection optical mechanism along direction B;

[0059] Figure 12 yes Figure 1 Side view of the micro-projection optical mechanism along direction C;

[0060] Figure 13 This is a three-dimensional structural schematic diagram of the micro-projection optical engine from a first-view perspective according to another embodiment of the present invention;

[0061] Figure 14 This is a three-dimensional structural diagram of a display panel assembly structure according to an embodiment of the present invention, viewed from a first perspective.

[0062] Figure 15 This is a first-view perspective three-dimensional structural diagram of the micro-projection optical engine display panel assembly structure according to another embodiment of the present invention. Detailed Implementation

[0063] As mentioned in the background section, miniaturization and weight reduction of micro-projection optical engines are among the urgent problems that need to be solved.

[0064] Based on this, the present invention provides a display panel assembly structure, a micro-projection optical engine, and an electronic device. By electrically connecting at least three micro-display panels, at least two electrical connection positions can be distributed on different sides, which avoids the problem of occupying a large area by setting multiple electrical connection positions on the same side. This reduces the assembly volume of the electronic device and facilitates the miniaturization of the electronic device.

[0065] To make the above-mentioned objectives, features, and advantages of the present invention more apparent and understandable, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0066] In the description of this invention, it should be understood that the terms "upper," "lower," "top surface," "bottom surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of the invention. Furthermore, the terms "first" and "second" are used only to distinguish an entity or operation from another entity or operation, and do not require or imply any actual relationship, order, or relative importance between these entities or operations.

[0067] Figure 5 This is a front view of the unfolded first micro-display panel in a display panel assembly structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the unfolded back of the first micro-display panel in a display panel assembly structure according to an embodiment of the present invention; Figure 7 This is a front view of one of the second micro-display panels in a display panel assembly structure according to an embodiment of the present invention; Figure 8 This is a front view of the unfolded second micro-display panel in a display panel assembly structure according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the unfolded back of another second micro-display panel in a display panel assembly structure according to an embodiment of the present invention; Figure 14 This is a three-dimensional structural diagram of a display panel assembly structure according to an embodiment of the present invention, viewed from a first perspective. Figure 15 This is a three-dimensional structural diagram of a display panel assembly structure from a first perspective, representing another embodiment of the present invention.

[0068] Please refer to Figures 5 to 9 ,as well as Figure 14 A display panel assembly structure includes: a first microdisplay panel 300, the first microdisplay panel 300 having at least two first connector portions 3003, the different first connector portions 3003 being electrically connected to each other via a first electrical connector 3002; at least two second microdisplay panels 400, each second microdisplay panel 400 having a second connector portion 4003; the at least two first connector portions 3003 of the first microdisplay panel 300 being electrically connected to the second connector portions 4003 of the at least two second microdisplay panels 400; and the light exit paths of the first microdisplay panel 300 and the at least two second microdisplay panels 400 being able to correspond to at least three light incident surfaces of a light combining component.

[0069] Understandably, if multiple electrical connection points are distributed on the same side, these points will occupy a large area on that side. This necessitates that the micro-display panel in that area provide a sufficiently large area to accommodate all the connections. Subsequently, when assembling the display panel assembly into an electronic device, the device must provide space to accommodate the largest area within the display panel assembly.

[0070] Therefore, by making corresponding electrical connections between at least two first connector portions 3003 of the first micro-display panel 300 and at least two second connector portions 4003 of the second micro-display panel 400, the at least two electrical connection positions formed by the electrical connections can be distributed on different sides. This avoids occupying a large area by setting multiple electrical connection positions on the same side, and prevents the problem of the maximum area size of a single region of the micro-display panel caused by multiple electrical connection positions being distributed on the same side. This reduces the space required for the electronic device to accommodate the display panel assembly structure, which is conducive to the miniaturization of electronic devices.

[0071] Please continue to refer to this. Figures 5 to 9 ,as well as Figure 14 In this embodiment, taking one first microdisplay panel 300 and two second microdisplay panels 400 as an example, the number of first connector portions 3003 in the corresponding first microdisplay panel 300 is also two.

[0072] In other embodiments, the number of second micro-display panels may be greater than two, that is, the number of second micro-display panels may be three, four, five, six, etc.

[0073] Please continue to refer to this. Figures 5 to 9In this embodiment, the first micro-display panel 300 further includes: a first display part 3001, which is electrically connected to any one of the first connector parts 3003 via a first electrical connector 3002; the second micro-display panel 400 further includes: a second display part 4001, which is electrically connected to the second connector part 4003 via a second electrical connector 4002.

[0074] Please continue to refer to this. Figures 5 to 9 In this embodiment, the first micro-display panel 300 further includes a first temporary register 3004; the second micro-display panel 400 further includes a second temporary register 4004.

[0075] It should be noted that the first connector section 3003 and the second connector section 4003 are used to realize the insertion between micro display panels; the first temporary register 3004 and the second temporary register 4004 are used to store the data after the corresponding micro display panel is calibrated, such as color accuracy, display uniformity, grayscale value, color temperature, etc.

[0076] Please continue to refer to the diagram. Figures 5 to 9 ,as well as Figure 14 In this embodiment, the first display unit 3001 includes a first display chip 30011, and the second display unit 4001 includes a second display chip 40011. Since there are two second micro-display panels 400, there are also two corresponding first electrical connectors 3002 for the first micro-display panels 300. Each first connector portion 3003 includes a first connector 30031, and each second connector portion includes a second connector 40031. Specifically, one first electrical connector 3002 is electrically connected at both ends to the first display chip 30011 and one of the first connector portions 3003, while the other first electrical connector 3002 is electrically connected at both ends to the two first connector portions 3003. One of the second connectors 40031 of the second micro-display panel 400 is electrically connected to one of the first connectors 30031 of the first micro-display panel 300, forming a first electrical connection position S1; the other second connector 40031 of the second micro-display panel 400 is electrically connected to the other first connector 30031 of the first micro-display panel 300, forming a second electrical connection position S2.

[0077] In other embodiments, when the number of microdisplay panels is greater than three, the corresponding number of electrical connection locations also increases accordingly.

[0078] In this embodiment, all three microdisplay panels are monochrome microdisplay panels. For example, the three microdisplay panels are a red microdisplay panel, a blue microdisplay panel, and a green microdisplay panel. For instance, the first microdisplay panel 300 can be a red microdisplay panel, and the two second microdisplay panels 400 can be blue and green microdisplay panels, respectively. Correspondingly, the first display portion 3001 of the first microdisplay panel 300 generates red light. The second display portions 4001 of the two second microdisplay panels 400 generate blue light and green light, respectively.

[0079] It should be noted that in this embodiment, each electrical connection position avoids the light emission path of each micro-display panel, that is, each electrical connection position will not block the light emitted by the display part of each micro-display panel.

[0080] Please continue to refer to this. Figures 5 to 9 In this embodiment, the first display unit 3001 further includes a first reinforcing plate 30012, to which the first display chip 30011 is fixedly connected; each first connector unit 3003 further includes a second reinforcing plate 30032, to which two first connectors 30031 are respectively fixedly connected. The first electrical connector 3002 is a flexible circuit board, thereby allowing the angle between the first reinforcing plate 30012 and the two second reinforcing plates 30032 to be adjusted according to usage requirements.

[0081] Please continue to refer to this. Figures 7 to 9 In this embodiment, the second display unit 4001 further includes a third reinforcing plate 40012, to which the second display chip 40011 is fixedly connected; the second connector unit 4003 further includes a fourth reinforcing plate 40032, to which the second connector 40031 is fixedly connected. The second electrical connector 4002 is a flexible circuit board, thereby allowing the angle between the third reinforcing plate 40012 and the fourth reinforcing plate 40032 to be adjusted according to usage requirements.

[0082] Please continue to refer to this. Figure 2 and Figure 3 The first micro-display panel 300 and at least two second micro-display panels 400 are all in a folded state.

[0083] Specifically, in this embodiment, the first electrical connector 3002 between the two second reinforcing plates 30032 in the first micro-display panel 300 is bent at 90°, and the first electrical connector 3002 between the first reinforcing plate 30012 in the first micro-display panel 300 and the second reinforcing plate 30032 connected thereto is also bent at 90°; the second electrical connector 4002 between the third reinforcing plate 40012 and the fourth reinforcing plate 40032 in one second micro-display panel 400 is also bent at 90°; the second electrical connector 4002 between the third reinforcing plate 40012 and the fourth reinforcing plate 40032 in another second micro-display panel 400 is in a folded state, that is, the third reinforcing plate 40012 and the fourth reinforcing plate 40032 are in a relative state.

[0084] Please continue to refer to this. Figures 7 to 9 In this embodiment, one of the two second micro-display panels 400 in the unfolded state is linear, and the other is "L" shaped.

[0085] Please continue to refer to this. Figures 7 to 9 In this embodiment, the two second micro-display panels 400 may be equipped with shielding covers (not shown), and the shielding covers and the second connectors 40031 are respectively disposed on opposite sides of the fourth reinforcing plate 40032. The shielding covers can shield the electronic components of the second connectors 40031, protect the electronic components of the connectors, and reduce the interference of the external environment on the electronic components of the second connectors 40031.

[0086] Please continue to refer to this. Figure 14 and Figure 9 The first microdisplay panel 300 and any one of the at least two second microdisplay panels 400 further includes an external connector 600, which is disposed on a different and opposite surface from the first connector 3003 corresponding to the first microdisplay panel 300, or on a different and opposite surface from the second connector 4003 corresponding to the second microdisplay panel 400.

[0087] Specifically, in this embodiment, an external connector 600 is formed on one of the second micro-display panels 400, and the external connector 600 and the second connector 40031 corresponding to the second micro-display panel 400 are disposed on different and opposite surfaces.

[0088] In other embodiments, the external connector may also be formed on the first microdisplay panel, with the external connector and the first connector corresponding to the first microdisplay panel disposed on different and opposite surfaces.

[0089] Please continue to refer to this. Figure 14In this embodiment, the external connector 600 is disposed on one of the second micro-display panels 400, and the corresponding second micro-display panel 400 is in a folded state. The second display portion 4001 of the second micro-display panel 400 and the external connector 600 are stacked. By folding the micro-display panel, the volume of the display panel assembly structure can be further reduced.

[0090] In this embodiment, the first microdisplay panel 300 and the two second microdisplay panels 400 have very small volumes, with length and width dimensions between 500μm and 50000μm, and the light-emitting areas of the first microdisplay panel 300 and the two second microdisplay panels 400 are very small, such as 1mm×1mm, 2.64mm×2.02mm, 3mm×5mm, etc.

[0091] In this embodiment, the light-emitting areas of the first microdisplay panel 300 and the two second microdisplay panels 400 include multiple micro-LED pixels arranged in an array. The specific pixel arrangement can be one of 320×240, 640×480, 1600×1200, 1920×1080, or 2560×1440. The size of a single micro-LED pixel is between 100 nm and 100 micrometers. For example, the size of a single micro-LED pixel is between 150 nm and 15 micrometers, or the size of a single micro-LED pixel can be less than 10 micrometers.

[0092] A driving backplane is disposed on the back of the micro-LED pixel array. The driving backplane is electrically connected to the micro-LEDs in the micro-LED pixel array. The driving backplane can acquire signals such as image data from the outside world and can control the corresponding micro-LEDs to emit light or not emit light. The driving backplane is a TFT (Thin Film Transistor) board or an IC (Integrated Circuit) board.

[0093] In this embodiment, a frame buffer, column driving circuit, and row driving circuit are integrated in the driving backplane of the first micro-display panel 300 and the two second micro-display panels 400. The frame buffer includes a first pixel storage area, and the micro-LED pixel array includes a second pixel storage area. A complete frame of pixel grayscale data from the outside world can first enter the first pixel storage area of ​​the frame buffer. The column driving circuit can load the pixel grayscale data in the first pixel storage area of ​​the frame buffer into the second pixel storage area of ​​the micro-LED pixel array. The row driving circuit can scan the pixel grayscale data in the second pixel storage area and generate a pulse modulation signal to achieve the purpose of displaying different grayscale levels. When driving multiple micro-LED pixels in the micro-LED pixel array, either a single pixel can be driven independently, or multiple pixel units can be driven independently. The specific driving method should not constitute a limitation of this application.

[0094] Figure 15 This is a first-view perspective three-dimensional structural diagram of a display panel assembly structure according to another embodiment of the present invention.

[0095] This embodiment further describes the display panel assembly structure based on the above embodiment. The rest is the same as the above embodiment, except that the display panel assembly structure can also have an unfolded state. The following will provide a detailed description with reference to the accompanying drawings.

[0096] Please refer to Figure 15 One or more of the first micro-display panel 300 and at least two second micro-display panels 400 are in an unfolded state.

[0097] Specifically, in this embodiment, the first micro-display panel 300 and one of the second micro-display panels 400 are in an unfolded state, while the other second micro-display panel 400 is in a folded state. That is, the first electrical connector 3002 between the two second reinforcing plates 30032 in the first micro-display panel 300 is not bent, nor is the first electrical connector 3002 between the first reinforcing plate 30012 and the connected second reinforcing plate 30032 in the first micro-display panel 300; the second electrical connector 4002 between the third reinforcing plate 40012 and the fourth reinforcing plate 40032 in one of the second micro-display panels 400 is not bent; and the second electrical connector 4002 between the third reinforcing plate 40012 and the fourth reinforcing plate 40032 in the other second micro-display panel 400 is in a folded state.

[0098] In this embodiment, the second micro-display panel 400 is folded such that the second electrical connector 4002 between the third reinforcing plate 40012 and the fourth reinforcing plate 40032 in the second micro-display panel 400 is bent at 90°.

[0099] Please continue to refer to this. Figure 15 In this embodiment, the external connector 600 is disposed on one of the second micro-display panels 400, which is in a bent state. The second display portion 4001 of the second micro-display panel 400 and the external connector 600 are distributed on different sides. By disposing the external connector 600 on a different side from the display portion, the external connector 600 can be fully exposed, thereby facilitating the electrical connection between external test devices and the external connector 600 to complete the testing of the display panel assembly structure.

[0100] In other embodiments, when the first microdisplay panel or the second microdisplay panel with the external connector is in an unfolded state, the first display portion of the first microdisplay panel and the external connector are distributed on different sides, or the second display portion of the second microdisplay panel and the external connector are distributed on different sides. Specifically, the first display portion of the first microdisplay panel and the external connector are distributed on different and opposite sides, or the second display portion of the second microdisplay panel and the external connector are distributed on different and opposite sides.

[0101] Please continue to refer to this. Figure 15 In this embodiment, the second display portion 4001 of the second micro display panel 400 and the external connector 600 are distributed on different sides perpendicular to each other.

[0102] It should be noted that, in other embodiments, the at least three microdisplay panels may be in a separate state, without electrical connection between them, but each microdisplay panel has a corresponding electrical connection interface. After the at least three microdisplay panels are assembled, the electrical connection of the at least three microdisplay panels has at least two electrical connection points. The at least two electrical connection points can be distributed on different sides by adjusting the flexible circuit board, and each electrical connection point avoids the light emission path of each microdisplay panel.

[0103] Figure 1 This is a three-dimensional structural diagram of a micro-projection optical engine from a first-view perspective according to an embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of the micro-projection optical engine from a second perspective according to an embodiment of the present invention; Figure 3 This is an exploded view of the light combining component and the micro display panel in a micro projection optical engine according to an embodiment of the present invention; Figure 4 yes Figure 1 Side view of the micro-projection optical mechanism along direction A; Figure 5 This is a front view of the unfolded first micro-display panel in a micro-projection optical engine according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the unfolded back of the first micro-display panel in a micro-projection optical engine according to an embodiment of the present invention; Figure 7 This is a front view of one of the second micro-display panels in a micro-projection optical engine according to an embodiment of the present invention; Figure 8 This is a front view of the unfolded second micro-display panel in a micro-projection optical engine according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the unfolded back of another second micro-display panel in a micro-projection optical engine according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the projection principle structure of a micro-projection optical engine according to an embodiment of the present invention; Figure 11 yes Figure 1 Side view of the micro-projection optical mechanism along direction B; Figure 12 yes Figure 1 Side view of the micro-projection optical mechanism along direction C.

[0104] Accordingly, this invention also provides a micro-projection optical engine, please refer to... Figures 1 to 3 ,as well as Figures 5 to 9 The system includes: a first microdisplay panel 300, the first microdisplay panel 300 having at least two first connector portions 3003, the different first connector portions 3003 being electrically connected to each other via a first electrical connector 3002; at least two second microdisplay panels 400, each second microdisplay panel 400 having a second connector portion 4003; the at least two first connector portions 3003 of the first microdisplay panel 300 can be electrically connected to the second connector portions 4003 of the at least two second microdisplay panels 400. The light combining component 100 includes a light emitting surface 100a and at least three light incident surfaces. A first microdisplay panel 300 and at least two second microdisplay panels 400 surround the light combining component 100. The light emitting paths of the first microdisplay panel 300 and at least two second microdisplay panels 400 correspond to the at least three light incident surfaces of the light combining component 100. The light emitted by the first microdisplay panel 300 and at least two second microdisplay panels 400 enters the light combining component 100 through the at least three light incident surfaces and exits through the light emitting surfaces.

[0105] By surrounding the light combining assembly 100 with the first micro-display panel 300 and at least two second micro-display panels 400, the space occupied by the light combining assembly 100 and at least one micro-display panel can be effectively reduced, which is beneficial to reducing the size of the micro-projection optical engine.

[0106] Understandably, if multiple electrical connection points are distributed on the same side, these points will occupy a large area on that side, requiring the micro-display panel in that area to have a sufficiently large area to accommodate them. Subsequently, when the micro-projection optical engine is assembled into the electronic device, the electronic device needs to provide space to accommodate the largest area of ​​the micro-projection optical engine.

[0107] Therefore, by making at least two first connector portions 3003 of the first micro-display panel 300 electrically connected to at least two second connector portions 4003 of the second micro-display panel 400, the at least two electrical connection positions formed by the electrical connection are distributed on different sides. This avoids occupying a large area by setting multiple electrical connection positions on the same side, and prevents the problem of the maximum area size of a single region of the micro-display panel caused by multiple electrical connection positions being distributed on the same side. This reduces the space required for the electronic device to accommodate the micro-projection optical engine, which is conducive to the miniaturization of the electronic device.

[0108] Please continue to refer to this. Figure 3 , Figures 5 to 9In this embodiment, taking one first microdisplay panel 300 and two second microdisplay panels 400 as an example, the number of first connector portions 3003 in the corresponding first microdisplay panel 300 is also two.

[0109] In other embodiments, the number of second micro-display panels may be greater than two, that is, the number of second micro-display panels may be three, four, five, six, etc.

[0110] Please continue to refer to this. Figures 1 to 3 In this embodiment, the micro-projection optical engine further includes a lens assembly 200, which corresponds to the light-emitting surface 100a. The light emitted from the light-emitting surface 100a is emitted to the outside through the lens assembly 200, and the lens assembly 200 is used to collimate the light emitted from the light-emitting surface 100a.

[0111] Please continue to refer to this. Figures 1 to 3 The micro-projection optical engine also includes: a mounting frame 500, which has an installation space 500a, within which the light combining component 100 is assembled and fixed. The mounting frame 500 protects the light combining component 100, reducing damage to it during use and improving the overall strength and durability of the micro-projection optical engine.

[0112] Please continue to refer to this. Figure 3 The mounting space 500a has a light outlet 500b communicating with the mounting space 500a and at least three light inlets; at least three light inlets correspond to at least three light inlets, and the light outlet 100a corresponds to the light outlet 500b; the lens assembly 200 corresponds to the light outlet 500b of the mounting frame 500, and the lens assembly 200 is fixedly connected to the side of the mounting frame 500 with the light outlet 500b.

[0113] Specifically, in this embodiment, since there are three micro-display panels, the corresponding mounting frame 500 also has three light-inlet ports, namely: a first light-inlet port 500c, a second light-inlet port 500d, and a third light-inlet port 500e; the corresponding light-combining component 100 also has three light-inlet surfaces, namely: a first light-inlet surface 100b, a second light-inlet surface 100c, and a third light-inlet surface 100d. The first light-inlet port 500c corresponds to the first light-inlet surface 100b, the second light-inlet port 500d corresponds to the second light-inlet surface 100c, and the third light-inlet port 500e corresponds to the third light-inlet surface 100d.

[0114] Please refer to Figure 4In this embodiment, along the light-emitting direction X of the lens assembly 200, the thickness d1 of the lens assembly 200 is less than half the width d2 of the mounting frame 500. Since the size of the light combining assembly 100 cannot be further compressed, further reducing the volume of the lens assembly 200 is beneficial to reducing the volume of the micro-projection optical engine.

[0115] Please continue to refer to this. Figure 1 In this embodiment, the diameter d3 of the lens assembly 200 is greater than half the length d4 of the mounting frame 500, and the diameter d3 of the lens assembly 200 is less than the length d4 of the mounting frame 500. The direction of the length d4 of the mounting frame 500 is perpendicular to the light emission direction X of the lens assembly 200. When the diameter d3 of the lens assembly 200 is less than half the length d4 of the mounting frame 500, the light transmission and brightness of the micro-projection optical engine are easily insufficient, thus failing to meet the basic application requirements of electronic devices (such as AR products). When the diameter d3 of the lens assembly 200 is greater than the length d4 of the mounting frame 500, the connection between the lens assembly 200 and the mounting frame 500 is poor, resulting in a reduction in the strength of the micro-projection optical engine.

[0116] Please continue to refer to this. Figures 5 to 9 In this embodiment, the first micro-display panel 300 further includes a first temporary register 3004; the second micro-display panel 400 further includes a second temporary register 4004.

[0117] It should be noted that the first connector section 3003 and the second connector section 4003 are used to realize the insertion between micro display panels; the first temporary register 3004 and the second temporary register 4004 are used to store the data after the corresponding micro display panel is calibrated, such as color accuracy, display uniformity, grayscale value, color temperature, etc.

[0118] Please continue to refer to this. Figure 1 , Figures 5 to 9In this embodiment, the first display unit 3001 includes a first display chip 30011, and the second display unit 4001 includes a second display chip 40011. Since there are two second micro-display panels 400, there are also two corresponding first electrical connectors 3002 for the first micro-display panels 300. Each first connector portion 3003 includes a first connector 30031, and each second connector portion includes a second connector 40031. Specifically, one first electrical connector 3002 is electrically connected at both ends to the first display chip 30011 and one of the first connector portions 3003, while the other first electrical connector 3002 is electrically connected at both ends to the two first connector portions 3003. One of the second connectors 40031 of the second micro-display panel 400 is electrically connected to one of the first connectors 30031 of the first micro-display panel 300, forming a first electrical connection position S1; the other second connector 40031 of the second micro-display panel 400 is electrically connected to the other first connector 30031 of the first micro-display panel 300, forming a second electrical connection position S2.

[0119] In other embodiments, when the number of microdisplay panels is greater than three, the corresponding number of electrical connection locations also increases accordingly.

[0120] In this embodiment, all three microdisplay panels are monochrome microdisplay panels. For example, the three microdisplay panels are a red microdisplay panel, a blue microdisplay panel, and a green microdisplay panel. For instance, the first microdisplay panel 300 can be a red microdisplay panel, and the two second microdisplay panels 400 can be blue and green microdisplay panels, respectively. Correspondingly, the first display portion 3001 of the first microdisplay panel 300 generates red light. The second display portions 4001 of the two second microdisplay panels 400 generate blue light and green light, respectively.

[0121] It should be noted that in this embodiment, each electrical connection position avoids the light emission path of each micro-display panel, that is, each electrical connection position will not block the light emitted by the display part of each micro-display panel.

[0122] Please continue to refer to this. Figures 5 to 9 In this embodiment, the first display unit 3001 further includes a first reinforcing plate 30012, to which the first display chip 30011 is fixedly connected; each first connector unit 3003 further includes a second reinforcing plate 30032, to which two first connectors 30031 are respectively fixedly connected. The first electrical connector 3002 is a flexible circuit board, thereby allowing the angle between the first reinforcing plate 30012 and the two second reinforcing plates 30032 to be adjusted according to usage requirements.

[0123] Please continue to refer to this. Figures 7 to 9In this embodiment, the second display unit 4001 further includes a third reinforcing plate 40012, to which the second display chip 40011 is fixedly connected; the second connector unit 4003 further includes a fourth reinforcing plate 40032, to which the second connector 40031 is fixedly connected. The second electrical connector 4002 is a flexible circuit board, thereby allowing the angle between the third reinforcing plate 40012 and the fourth reinforcing plate 40032 to be adjusted according to usage requirements.

[0124] Please continue to refer to this. Figure 2 and Figure 3 The first micro-display panel 300 and at least two second micro-display panels 400 are all in a folded state.

[0125] Specifically, in this embodiment, the first electrical connector 3002 between the two second reinforcing plates 30032 in the first micro-display panel 300 is bent at 90°, and the first electrical connector 3002 between the first reinforcing plate 30012 in the first micro-display panel 300 and the second reinforcing plate 30032 connected thereto is also bent at 90°; the second electrical connector 4002 between the third reinforcing plate 40012 and the fourth reinforcing plate 40032 in one second micro-display panel 400 is also bent at 90°; the second electrical connector 4002 between the third reinforcing plate 40012 and the fourth reinforcing plate 40032 in another second micro-display panel 400 is in a folded state, that is, the third reinforcing plate 40012 and the fourth reinforcing plate 40032 are in a relative state.

[0126] Please continue to refer to this. Figures 7 to 9 In this embodiment, one of the two second micro-display panels 400 in the unfolded state is linear, and the other is "L" shaped.

[0127] Please continue to refer to this. Figures 7 to 9 In this embodiment, the two second micro-display panels 400 may be equipped with shielding covers (not shown), and the shielding covers and the second connectors 40031 are respectively disposed on opposite sides of the fourth reinforcing plate 40032. The shielding covers can shield the electronic components of the second connectors 40031, protect the electronic components of the connectors, and reduce the interference of the external environment on the electronic components of the second connectors 40031.

[0128] Please continue to refer to this. Figure 3 The first microdisplay panel 300 and at least two second microdisplay panels 400 correspond one-to-one with at least three light inlets of the mounting frame 500. The first display portion 3001 of the first microdisplay panel 300 and the second display portion 4001 of the second microdisplay panel 400 are respectively fixedly connected to the side of the mounting frame 500 with the light inlets.

[0129] Specifically, in this embodiment, the first display portion 3001 of the first micro-display panel 300 corresponds to the first light inlet 500c, and the first display portion 3001 of the first micro-display panel 300 is fixedly connected to the side of the mounting frame 500 with the first light inlet 500c. The second display portions 4001 of the two second micro-display panels 400 correspond to the second light inlet 500d and the third light inlet 500e, respectively, and the second display portions 4001 of the two second micro-display panels 400 are fixedly connected to the side of the mounting frame 500 with the second light inlet 500d and the third light inlet 500e, respectively.

[0130] Please continue to refer to this. Figure 1 , Figure 2 and Figure 9 The first microdisplay panel 300 and any one of the at least two second microdisplay panels 400 further includes an external connector 600, which is disposed on a different and opposite surface from the first connector 3003 corresponding to the first microdisplay panel 300, or on a different and opposite surface from the second connector 4003 corresponding to the second microdisplay panel 400.

[0131] Specifically, in this embodiment, an external connector 600 is formed on one of the second micro-display panels 400, and the external connector 600 and the second connector 40031 corresponding to the second micro-display panel 400 are disposed on different and opposite surfaces.

[0132] In other embodiments, the external connector may also be formed on the first microdisplay panel, with the external connector and the first connector corresponding to the first microdisplay panel disposed on different and opposite surfaces.

[0133] Please continue to refer to this. Figure 1 and Figure 2 In this embodiment, the external connector 600 is disposed on one of the second micro-display panels 400, and the corresponding second micro-display panel 400 is in a folded state. The second display portion 4001 of the second micro-display panel 400 and the external connector 600 are stacked. By folding the micro-display panel, the volume of the display panel assembly structure can be further reduced.

[0134] Please continue to refer to this. Figure 1 and Figure 2 Each light inlet has a guide angle 5001 with a guide mounting space 500a at its edge. The guide angles 5001 facilitate guiding each display unit to its corresponding light inlet surface. After the display unit is assembled with the corresponding light inlet, the guide angles 5001 will form a gap, which facilitates the filling of glue when fixing the display unit to the mounting frame 500, resulting in better adhesion between the display unit and the mounting frame 500, thereby improving the overall strength of the micro-projection optical engine.

[0135] Specifically, in this embodiment, the edges of the first light inlet 500c, the second light inlet 500d, and the third light inlet 500e are all provided with guide angles 5001 for the guide mounting space 500a, so that after the first display unit 3001 is assembled with the corresponding first light inlet 500c, and after the two second display units 4001 are assembled with the corresponding second light inlet 500d and the third light inlet 500e respectively, the guide angles 5001 will form gaps.

[0136] Please refer to Figure 11 and Figure 12 Along the side direction perpendicular to the mounting frame 500, the projection area of ​​each electrical connection position is located within the side area of ​​the mounting frame 500 opposite to the electrical connection position. This further ensures that the micro-display panel corresponding to each electrical connection position does not have a maximum area size problem in a single region, thereby reducing the space required by the electronic device to accommodate the micro-projection optical engine, which is conducive to the miniaturization of electronic devices.

[0137] Specifically, in this embodiment, along the side direction perpendicular to the mounting frame 500, the projection area of ​​the first electrical connection position S1 is located within the side area of ​​the mounting frame 500 opposite to the first electrical connection position S1; the projection area of ​​the second electrical connection position S2 is located within the side area of ​​the mounting frame 500 opposite to the second electrical connection position S2.

[0138] Please refer to Figure 10 In this embodiment, the light combining component 100 includes a mirror body 1001, a first semi-reflective and semi-transparent film 1002, and a second semi-reflective and semi-transparent film 1003. The first semi-reflective and semi-transparent film 1002 and the second semi-reflective and semi-transparent film 1003 are alternately arranged on the mirror body 1001. The light emitted from the first micro-display panel 300 enters the interior of the light combining component 100 after passing through the first light incident surface 100b, and then passes through the first semi-reflective and semi-transparent film 1002 and the second semi-reflective and semi-transparent film 1003 before exiting through the light emitting surface 100a. Light emitted from one of the second microdisplay panels 400 enters the light combining assembly 100 through the second light-incident surface 100c. Part of the light is reflected by the first semi-reflective membrane 1002, passes through the second semi-reflective membrane 1003, and exits through the light-emitting surface 100a. Another part of the light passes through the second semi-reflective membrane 1003, is reflected by the first semi-reflective membrane 1002, and exits through the light-emitting surface 100a. Similarly, light emitted from another second microdisplay panel 400 enters the light combining assembly 100 through the third light-incident surface 100d. Part of the light is reflected by the second semi-reflective membrane 1003, passes through the first semi-reflective membrane 1002, and exits through the light-emitting surface 100a. Another part of the light passes through the second semi-reflective membrane 1003, is reflected by the first semi-reflective membrane 1002, and exits through the light-emitting surface 100a.

[0139] Please continue to refer to this. Figure 10 In this embodiment, the shape of the light combining component 100 is a cuboid, such as a rectangular prism or a cube. For example, the light combining component 100 can be composed of four sub-prisms with triangular cross-sections. A sub-semi-reflective and semi-transparent membrane is attached to a preset surface of the four sub-prisms. When the four sub-prisms are spliced ​​together, the sub-semi-reflective and semi-transparent membranes are interconnected to form a first semi-reflective and semi-transparent membrane 1002 and a second semi-reflective and semi-transparent membrane 1003.

[0140] In this embodiment, the first microdisplay panel 300 and the two second microdisplay panels 400 have very small volumes, with length and width dimensions between 500μm and 50000μm, and the light-emitting areas of the first microdisplay panel 300 and the two second microdisplay panels 400 are very small, such as 1mm×1mm, 2.64mm×2.02mm, 3mm×5mm, etc.

[0141] In this embodiment, the light-emitting areas of the first microdisplay panel 300 and the two second microdisplay panels 400 include multiple micro-LED pixels arranged in an array. The specific pixel arrangement can be one of 320×240, 640×480, 1600×1200, 1920×1080, or 2560×1440. The size of a single micro-LED pixel is between 100 nm and 100 micrometers. For example, the size of a single micro-LED pixel is between 150 nm and 15 micrometers, or the size of a single micro-LED pixel can be less than 10 micrometers.

[0142] A driving backplane is disposed on the back of the micro-LED pixel array. The driving backplane is electrically connected to the micro-LEDs in the micro-LED pixel array. The driving backplane can acquire signals such as image data from the outside world and can control the corresponding micro-LEDs to emit light or not emit light. The driving backplane is a TFT (Thin Film Transistor) board or an IC (Integrated Circuit) board.

[0143] In this embodiment, a frame buffer, column driving circuit, and row driving circuit are integrated in the driving backplane of the first micro-display panel 300 and the two second micro-display panels 400. The frame buffer includes a first pixel storage area, and the micro-LED pixel array includes a second pixel storage area. A complete frame of pixel grayscale data from the outside world can first enter the first pixel storage area of ​​the frame buffer. The column driving circuit can load the pixel grayscale data in the first pixel storage area of ​​the frame buffer into the second pixel storage area of ​​the micro-LED pixel array. The row driving circuit can scan the pixel grayscale data in the second pixel storage area and generate a pulse modulation signal to achieve the purpose of displaying different grayscale levels. When driving multiple micro-LED pixels in the micro-LED pixel array, either a single pixel can be driven independently, or multiple pixel units can be driven independently. The specific driving method should not constitute a limitation of this application.

[0144] Figure 13 This is a three-dimensional structural diagram of the micro-projection optical engine from a first-view perspective, according to another embodiment of the present invention.

[0145] This embodiment further describes the micro-projection optical engine based on the above embodiment. The rest is the same as the above embodiment, except that the micro-projection optical engine can also have an unfolded state. The following will provide a detailed description with reference to the accompanying drawings.

[0146] Please refer to Figure 13 The micro-display panel with the external connector 600 is bent, with the display section and the external connector 600 distributed on different sides. By placing the external connector 600 on a different side from the display section, the external connector 600 can be fully exposed, facilitating the electrical connection between external test devices and the external connector 600 to complete the testing of the micro-projection optical engine.

[0147] Specifically, in this embodiment, the second electrical connector 4002 of the second micro-display panel 400, which is provided with the external connector 600, is bent at 90°, and the second display part 4001 of the second micro-display panel 400 and the external connector 600 are distributed on different sides.

[0148] Please continue to refer to this. Figure 13 The display section of the micro-display panel and the external connector 600 are distributed on different sides perpendicular to each other.

[0149] Specifically, in this embodiment, the second display portion 4001 of the second micro-display panel 400 and the external connector 600 are distributed on different sides perpendicular to each other.

[0150] Accordingly, the present invention also provides an electronic device, including a micro-projection optical engine as described in any of the above embodiments.

[0151] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A display panel assembly structure, characterized in that, include: A first micro-display panel, the first micro-display panel having at least two first connector portions, the different first connector portions being electrically connected to each other via a first electrical connector; At least two second microdisplay panels, each second microdisplay panel having a second connector portion; The at least two first connector portions of the first microdisplay panel can be electrically connected to the second connector portions of the at least two second microdisplay panels; The light emission paths of the first microdisplay panel and the at least two second microdisplay panels can correspond to at least three light incident surfaces of the light combining component; wherein, At least two electrical connection positions are formed by corresponding electrical connections between at least two first connector portions of the first micro-display panel and at least two second connector portions of the second micro-display panel. These two electrical connection positions are located on different sides of the light combining component, and each electrical connection position avoids the light emission path of each micro-display panel.

2. The display panel assembly structure as described in claim 1, characterized in that, The first micro-display panel further includes: a first display unit, wherein the first display unit and any one of the first connector units are electrically connected via the first electrical connector; the second micro-display panel further includes: a second display unit, wherein the second display unit and the second connector unit are electrically connected via a second electrical connector.

3. The display panel assembly structure as described in claim 2, characterized in that, The first connector portion includes a first connector; the second connector portion includes a second connector.

4. The display panel assembly structure as described in claim 3, characterized in that, The first microdisplay panel and any one of the at least two second microdisplay panels further includes an external connector, which is disposed on a different and opposite surface from the first connector corresponding to the first microdisplay panel, or on a different and opposite surface from the second connector corresponding to the second microdisplay panel.

5. The display panel assembly structure as described in claim 4, characterized in that, Both the first electrical connector and the second electrical connector are flexible circuit boards.

6. The display panel assembly structure as described in claim 5, characterized in that, The first micro-display panel and the at least two second micro-display panels are all in a folded state.

7. The display panel assembly structure as described in claim 5, characterized in that, One or more of the first micro-display panel and the at least two second micro-display panels are in an unfolded state.

8. The display panel assembly structure as described in claim 5, characterized in that, When the external connector is installed on any one of the second micro-display panels, the corresponding second micro-display panel is in a folded state, and the second display part of the second micro-display panel and the external connector are stacked.

9. The display panel assembly structure as described in claim 5, characterized in that, When the external connector is installed on any one of the second micro-display panels, the corresponding second micro-display panel is in a bent state, and the second display part of the corresponding second micro-display panel and the external connector are distributed on different sides perpendicular to each other.

10. The display panel assembly structure as described in claim 5, characterized in that, When the first micro-display panel or the second micro-display panel with the external connector is in the unfolded state, the first display part of the first micro-display panel and the external connector are distributed on different and opposite sides of the first micro-display panel, or the second display part of the second micro-display panel and the external connector are distributed on different and opposite sides of the second micro-display panel.

11. A micro-projection optical engine, characterized in that, include: A first micro-display panel, the first micro-display panel having at least two first connector portions, the different first connector portions being electrically connected to each other via a first electrical connector; At least two second microdisplay panels, each second microdisplay panel having a second connector portion; The at least two first connector portions of the first microdisplay panel are electrically connected to the second connector portions of the at least two second microdisplay panels. A light combining component, the light combining component including a light emitting surface and at least three light incident surfaces; The first microdisplay panel and the at least two second microdisplay panels are arranged to surround the light combining component. The light emission paths of the first microdisplay panel and the at least two second microdisplay panels correspond to the at least three light incident surfaces of the light combining component. Light emitted from the first microdisplay panel and the at least two second microdisplay panels enters the light combining component through the at least three light incident surfaces and exits through the light emission surfaces. At least two electrical connection positions are formed by corresponding electrical connections between at least two first connector portions of the first micro-display panel and at least two second connector portions of the second micro-display panel. These two electrical connection positions are located on different sides of the light combining component, and each electrical connection position avoids the light emission path of each micro-display panel.

12. The micro-projection optical engine as described in claim 11, characterized in that, The first micro-display panel further includes: a first display unit, wherein the first display unit and any one of the first connector units are electrically connected via the first electrical connector; the second micro-display panel further includes: a second display unit, wherein the second display unit and the second connector unit are electrically connected via a second electrical connector.

13. The micro-projection optical engine as described in claim 12, characterized in that, Light is emitted from the first display portion of the first micro-display panel and the second display portion of the second micro-display panel.

14. The micro-projection optical engine as described in claim 13, characterized in that, The first connector portion includes a first connector; the second connector portion includes a second connector.

15. The micro-projection optical engine as described in claim 14, characterized in that, The first microdisplay panel and any one of the at least two second microdisplay panels further includes an external connector, which is disposed on a different and opposite surface from the first connector corresponding to the first microdisplay panel, or on a different and opposite surface from the second connector corresponding to the second microdisplay panel.

16. The micro-projection optical engine as described in claim 15, characterized in that, Both the first electrical connector and the second electrical connector are flexible circuit boards.

17. The micro-projection optical engine as described in claim 15, characterized in that, When the external connector is installed on any one of the second micro-display panels, the corresponding second micro-display panel is in a folded state, and the second display part of the second micro-display panel and the external connector are stacked.

18. The micro-projection optical engine as described in claim 15, characterized in that, When the external connector is installed on any one of the second micro-display panels, the corresponding second micro-display panel is in a bent state, and the second display part of the corresponding second micro-display panel and the external connector are distributed on different sides perpendicular to each other.

19. The micro-projection optical engine as described in claim 11, characterized in that, Also includes: A lens assembly, which corresponds to the light-emitting surface, through which light emitted from the light-emitting surface is emitted to the outside, and the lens assembly is used to collimate the light emitted from the light-emitting surface.

20. The micro-projection optical engine as described in claim 19, characterized in that, Also includes: The mounting frame has an installation space, and the light combining component is assembled and fixed within the installation space.

21. The micro-projection optical engine as described in claim 20, characterized in that, The mounting frame has a light-emitting port and at least three light-in ports communicating with the mounting space on its side; the at least three light-in ports correspond to the at least three light-in surfaces, and the light-emitting surfaces correspond to the light-emitting ports; the display sections of the at least three micro-display panels correspond one-to-one with the at least three light-in ports of the mounting frame.

22. The micro-projection optical engine as described in claim 20, characterized in that, The display portions of the at least three micro-display panels are respectively fixedly connected to the side of the mounting frame with the light inlet; the lens assembly corresponds to the light outlet of the mounting frame, and the lens assembly is fixedly connected to the side of the mounting frame with the light outlet.

23. The micro-projection optical engine as described in claim 20, characterized in that, Along the light-emitting direction of the lens assembly, the thickness of the lens assembly is less than half the width of the mounting frame.

24. The micro-projection optical engine as described in claim 20, characterized in that, The diameter of the lens assembly is greater than half the length of the mounting frame, and the diameter of the lens assembly is less than the length of the mounting frame. The direction of the length of the mounting frame is perpendicular to the light output direction of the lens assembly.

25. The micro-projection optical engine as described in claim 21, characterized in that, Each light inlet has a guide angle with a guide installation space at its edge.

26. The micro-projection optical engine as described in claim 22, characterized in that, Along the side direction perpendicular to the mounting frame, the projected area of ​​each electrical connection position is located within the side area of ​​the mounting frame opposite to the electrical connection position.

27. An electronic device, characterized in that, Includes the micro-projection optical engine as described in any one of claims 11 to 26.

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