Light combination connector, micro-display module and assembling method of micro-display module

Abstract

The invention relates to the technical field of micro-projection light machines, and discloses a light combination connector, a micro-display module and an assembling method of the micro-display module, the light combination connector comprises three micro-display panels, an X-CUBE prism and a light machine lens, the light combination connector is characterized in that light rays are emitted by the micro-display panels and are emitted from the light-emitting surface of the X-CUBE prism, the light combination connector further comprises the light combination connector, and the X-CUBE prism is arranged on the light combination connector. Three connecting ends of the light combining connector are respectively connected with the micro display panel in a combined mode, and the other connecting end of the light combining connector is used for being connected with an external mainboard. According to the invention, the adapter connector is directly integrated into a novel external assembly in an independent manner, and the adapter connector and the light combination assembly are assembled in a manner that the top and the three side surfaces are directly surrounded, so that the adapter connector becomes an independent functional part except for the light combination assembly, and the space waste caused by the adapter connector is reduced; space optimization and length optimization of the micro-projection light machine are realized, and signal synchronization is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of micro projection light machines, in particular to a light combining connector, a micro display module and an assembly method of the micro display module. BACKGROUND

[0002] The core component of micro projection technology is a light combining light machine, which integrates multiple display chips inside. The display chips need to be connected and transmitted by flexible circuit boards (FPCs). In recent years, as devices gradually develop towards miniaturization and thinness, how to maximize the use of internal space of the light machine and make the internal structure of the light machine more compact and synchronous signal transmission has become the main breakthrough direction.

[0003] Currently, the mainstream approach is to make a separate adapter connector, and then multiple display screens are connected to the adapter FPC connector by the FPC end on the display screen. Due to the design of the adapter connector, the current scheme has the following inherent defects:

[0004] 1. Space occupation: the independent adapter connector itself has a height and volume, and needs to reserve a mounting position, which increases the overall size of the light combining light machine.

[0005] 2. Long signal path: the signal needs to pass through a longer FPC wire from the display chip to the adapter connector, which may introduce more impedance and interference, causing signal asynchronization.

[0006] Therefore, the existing design of the adapter connector cannot meet the demand of the next generation of ultra-thin micro projection devices for the limit of internal space utilization. How to use a simpler FPC adapter connector while ensuring normal operation of the light machine, reduce space occupation, and make the space occupation rate of the micro projection device lower is a problem that needs to be solved. SUMMARY

[0007] In view of the shortcomings of the prior art, the present application provides a light combining connector, a micro display module and an assembly method of the micro display module, which solves the problems of large installation space occupation of the adapter connector in the existing micro projection light machine, long FPC length between several display chips causing signal delay and asynchronization, etc.

[0008] To achieve the above purpose, the present application is realized by the following technical scheme:

[0009] A light combining connector, comprising a first flexible circuit board and four connection ends connected to the first flexible circuit board, the connection ends are T-shaped and arranged on the same side of the first flexible circuit board.

[0010] A micro display module, comprising a micro display panel, an X-CUBE prism and an optical machine lens, characterized in that the micro display panel is arranged with three single-color micro display screens for red light, green light and blue light respectively, the X-CUBE prism comprises an outlight surface and three inlight surfaces, the three micro display panels are assembled on the three inlight surfaces of the X-CUBE prism respectively, and the optical machine lens is assembled at the position of the outlight surface of the X-CUBE prism; light is emitted from the micro display panel and emitted from the outlight surface of the X-CUBE prism to realize aggregation of the three single-color screens and formation of full color on the outlight surface; and the micro display module further comprises a light combination connector as described in the above technical solution, three connection ends of the light combination connector are connected with the micro display panel in a composite manner, and the other connection end is used to connect with an external mainboard.

[0011] Preferably, the exposed surface of the connection end does not exceed the maximum envelope contour of the X-CUBE prism.

[0012] Preferably, the micro display panel comprises a micro display screen and a second flexible circuit board connected with the micro display screen in a composite manner, one end of the second flexible circuit board away from the micro display screen is connected with an interface end in a composite manner, and the micro display screen is assembled on the three inlight surfaces of the X-CUBE prism respectively.

[0013] An assembly method of a micro display module, the micro display module is assembled and formed by the light combination connector in the above technical solution, and the assembly method comprises the following steps:

[0014] The three micro display screens are assembled on the three inlight surfaces of the X-CUBE prism, and the optical machine lens is assembled on the outlight surface of the X-CUBE prism.

[0015] The four connection ends of the light combination connector are folded and gathered towards the center of the X-CUBE prism and are arranged in a flat manner on the back surface of the micro display screen and the end surface of the X-CUBE prism; the interface ends of the three micro display screens are connected with the corresponding connection ends in a back folding manner.

[0016] The present application has the following beneficial effects:

[0017] (1) The light combination connector, the micro display module and the assembly method of the micro display module, by integrating the FPC adapter connector into a new external component containing multiple connection ends in an independent manner, assembling the component with the X-CUBE prism in a manner of being directly surrounded by the top and three sides, making it an independent functional part outside the X-CUBE prism, reducing the space waste caused by the size of the connector itself, realizing the space optimization and length optimization of the micro projection optical machine to realize signal synchronization, and being more conducive to the development of the subsequent micro projection optical machine towards the direction of AR+AI glasses application with more miniaturization. The composite connection realizes the connection mode of power supply and signal transmission in one.

[0018] (2) The optical combining connector, microdisplay module, and assembly method of the microdisplay module integrate their functions into the existing main structure of the X-CUBE prism by establishing an integrated connector, simplifying the bill of materials and assembly process, reducing manufacturing costs, and significantly reducing the space occupied by the optical combining connector due to the flexible circuit board wiring. This provides key technical support for the thin design of the optomechanical system. At the same time, it shortens the signal transmission path between the microdisplay panel and the connector, which is conducive to improving the synchronization and integrity of the optical combining signal. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the optical combining connector of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of the micro-display panel of the present invention;

[0021] Figure 3 This is a schematic diagram of the X-CUBE prism structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the optical-mechanical lens structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the assembly steps of the microdisplay module of the present invention.

[0024] In the figure: 1. First flexible circuit board; 2. Connection end; 3. Interface end; 4. Second flexible circuit board; 5. Micro display screen; 6. X-CUBE prism; 7. Optical-mechanical lens. Detailed Implementation

[0025] 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.

[0026] Example 1

[0027] A photoelectric connector includes a first flexible circuit board 1 and four connecting ends 2 connected thereto. The connecting ends 2 are T-shaped and all arranged on the same side of the first flexible circuit board 1. Figure 1As shown, in the technical solution, the FPC adapter connector is directly integrated into a new external component containing multiple connection ends 2 in an independent manner, and the assembly is assembled with the X-CUBE prism 6 in a manner of being directly surrounded by the top and three sides, so that it becomes an independent functional part outside the X-CUBE prism 6, reduces the space waste caused by the size of the connector itself, realizes the space optimization and length optimization of the micro projection light machine to realize signal synchronization, and is more conducive to the subsequent development of the micro projection light machine towards the AR+AI glasses application direction of more miniaturization. The composite connection is a connection mode that realizes the integration of power supply and signal transmission.

[0028] Embodiment 2

[0029] A micro display module includes a micro display panel, an X-CUBE prism 6, and a light machine lens 7. The micro display panel is arranged with three, respectively used as a single-color micro display screen for red light, green light, and blue light. The X-CUBE prism 6 includes an outlight surface and three inlight surfaces. The three micro display panels are assembled at the three inlight surfaces of the X-CUBE prism 6. The light machine lens 7 is assembled at the outlight surface of the X-CUBE prism 6. Light is emitted by the micro display panel and emitted from the outlight surface of the X-CUBE prism 6. The micro display module further includes a light-combining connector as in Embodiment 1. The three connection ends 2 in the light-combining connector are respectively connected to the micro display panel in a composite manner. Another connection end 2 is used to connect to an external mainboard.

[0030] As shown in Figures 1-5 In the above technical solution, the function of the integrated connector is "divided into parts" and integrated into the existing main structure of the X-CUBE prism 6. The connector is connected to the X-CUBE prism 6 in a wrapping manner, which simplifies the bill of materials and assembly process, and reduces the cost. The space occupied by the connector due to the circuit board wiring is greatly reduced, which provides key technical support for the thin design of the light machine. At the same time, the signal transmission path between the micro display panel and the connector is shortened, which is conducive to improving the synchronization and integrity of the light-combining signal.

[0031] The X-CUBE prism is a light-combining assembly commonly used in the art. The X-CUBE prism includes an outlight surface and three inlight surfaces. The X-CUBE prism aggregates three single-color screens together to form a full-color on the outlight surface.

[0032] The exposed surface of the connection end 2 does not exceed the maximum envelope contour of the X-CUBE prism 6. In the technical solution, the overall size of the connector is limited, so that after the connector is assembled with the X-CUBE prism 6, the overall size is limited within the volume limit of the X-CUBE prism 6 (i.e., the light-combining assembly), which helps to make the micro display module assembled as a whole more miniaturized in volume.

[0033] The micro display panel comprises a micro display screen 5 and a second flexible circuit board 4 connected therewith, and an interface end 3 is connected to the end of the second flexible circuit board 4 away from the micro display screen 5, and the micro display screen 5 is assembled on the three light-in surfaces of the X-CUBE prism 6.

[0034] Embodiment 3

[0035] An assembling method of a micro display module, which is assembled into the micro display module as in Embodiment 2 through the light-combining connector as in Embodiment 1, and specifically comprises the following steps:

[0036] The three micro display screens 5 are assembled on the three light-in surfaces of the X-CUBE prism 6, and the optical machine lens 7 is assembled on the light-out surface of the X-CUBE prism 6.

[0037] The four connecting ends 2 of the light-combining connector are folded towards the center of the X-CUBE prism 6 and are arranged flat on the back surface of the micro display screen 5 and the end surface of the X-CUBE prism 6.

[0038] The interface ends 3 of the three micro display screens 5 are connected to the corresponding connecting ends 2 in a back-folding manner. In the whole method, the connector is quickly assembled with the X-CUBE prism 6 and the micro display panel through the direct surrounding of the top and three sides by using the compact light-combining connector, the whole light-combining connector is “divided into parts” and integrated into the existing main structure of the light-combining assembly, which greatly improves the assembly efficiency of the module, simplifies the bill of materials and assembly process, and reduces the production and processing cost.

[0039] The electrical part of the light-combining connector is combined with the mechanical structure of the light-combining assembly in a pasting and folding manner, creating a brand-new, highly integrated component. At the same time, it effectively reduces the space waste caused by the light-combining connector, optimizes the space of the micro display module, reduces the space occupation caused by the flexible circuit board wiring of the light-combining connector, and provides key technical support for the thin design of the micro display module. Moreover, the signal transmission path of the micro display panel and the connecting end 2 of the light-combining connector is shortened, which is conducive to improving the synchronization and integrity of the light-combining signal and realizing efficient signal synchronization.

[0040] It has to be noted that, in the present document, the terms "first", "second", etc. merely serve to identify different entities or actions and do not necessarily require or imply any actual relationship or order between these entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. In other words, without further restriction, reference to elements will not, without more limitations, exclude additional, unrecited elements of a process, method, article, or apparatus.

[0041] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since numerous modifications and changes can be made to the embodiments without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A light-combining connector, characterized in that, It includes a first flexible circuit board and four connection terminals connected to it. The connection terminals are T-shaped and are all arranged on the same side of the first flexible circuit board.

2. A microdisplay module, comprising a microdisplay panel, an X-CUBE prism, and an optical-mechanical lens, characterized in that, The system includes three microdisplay panels, which serve as monochrome microdisplay screens for red, green, and blue light, respectively. The X-CUBE prism includes one light-emitting surface and three light-receiving surfaces. The three microdisplay panels are respectively assembled on the three light-receiving surfaces of the X-CUBE prism. An optical engine lens is assembled at the light-emitting surface of the X-CUBE prism. Light is emitted from the microdisplay panels and exits from the light-emitting surface of the X-CUBE prism, thereby combining the three monochrome screens together and forming a full-color display on the light-emitting surface. The system also includes a light-combining connector as described in claim 1, wherein three of the connector's connection ends are respectively connected to the microdisplay panels, and the other connection end is used to connect to an external motherboard.

3. The microdisplay module according to claim 2, characterized in that: The exposed surface of the connection end does not exceed the maximum envelope contour of the X-CUBE prism.

4. The microdisplay module according to claim 3, characterized in that: The microdisplay panel includes a microdisplay screen and a second flexible circuit board connected to it. The end of the second flexible circuit board away from the microdisplay screen is connected to an interface end. The microdisplay screen is assembled on the three light-incident surfaces of the X-CUBE prism.

5. A method for assembling a microdisplay module, characterized in that, Assembling the microdisplay module as described in claim 4 using the light-combining connector as described in claim 1 includes the following steps: Three micro-displays are respectively assembled on the three light-incident surfaces of the X-CUBE prism, and the optical-mechanical lens is assembled on the light-outcrystal surface of the X-CUBE prism. The four connection ends of the optical connector are folded and laid flat on the back of the micro-display and the end face of the X-CUBE prism, facing the center of the X-CUBE prism. The interface ends of the three micro-displays are connected to the corresponding connection ends in sequence by back folding.

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