CN114973991A

CN114973991A - Camera alignment mechanism, method and system for attaching cube three-color light-combination prism and micro display screen

Info

Publication number: CN114973991A
Application number: CN202210397979.5A
Authority: CN
Inventors: 邓忠光; 杨坤涛; 郑增强; 欧昌东; 刘荣华
Original assignee: Wuhan Gatlin Optical Instrument Co ltd; Wuhan Jingli Electronic Technology Co Ltd
Current assignee: Wuhan Gatlin Optical Instrument Co ltd; Wuhan Jingli Electronic Technology Co Ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-08-30

Abstract

The invention discloses a camera alignment mechanism, a method and a system for attaching a cubic three-color light-combining prism to a micro display screen, which are used for realizing alignment between an attaching end of the micro display screen and an attaching surface of the cubic three-color light-combining prism, and comprise at least two first cameras and two second cameras with different multiplying powers, and a reflector, wherein the multiplying power of the first camera is greater than that of the second camera; the reflector is located at the position of a light outlet of the cube three-color light-combining prism and used for changing the light path of emergent light, so that the cameras at different positions with different multiplying powers receive the light emergent from the light outlet of the cube three-color light-combining prism in a time-sharing manner. The invention has compact integral structure, can ensure accurate alignment between the bonding end of the micro display screen and the bonding surface of the cubic three-color light-combining prism, and provides a good foundation for adjusting the relative distance between the bonding end of the micro display screen and the bonding surface of the cubic three-color light-combining prism in the bonding process.

Description

Camera alignment mechanism, method and system for attaching cube three-color light-combining prism and micro display screen

Technical Field

The invention belongs to the technical field of micro display screens, and particularly discloses a camera alignment mechanism, a method and a system for attaching a cube three-color light-combining prism to a micro display screen.

Background

At present, display panels are widely applied to various scenes of people's lives and become an essential part of people's lives. The types of displays on the market are more and more, and at present, the displays produced based on micron light emitting diode (Micro LED) technology slowly enter the field of vision of people.

Since Micro LEDs can only produce single-color displays in batch in the prior art, it is imperative to integrate single-color displays into three RGB colors for light combination to form various patterns. Three sides of the cubic three-color light-combining prism in the same circle are respectively attached to Micro LED displays (Micro display screens) with three different colors, so that the Micro display screen capable of obtaining a light-combining image is obtained, and the method is a feasible scheme.

At present, in the laminating process of a Micro LED screen and a cube prism, a zoom camera is usually used as an alignment camera to assist in realizing alignment between a laminating end of the Micro display screen and a laminating surface of the cube three-color light-combining prism, and the method comprises the following specific steps: firstly, a zoom camera carries out rough alignment on a frame of a cube three-color light-combining prism and a frame of a light-emitting area of a micro display screen, and the camera takes full view at low magnification; then, the alignment camera is continuously used for shooting the pixel dot matrix of the micro display screen to carry out fine alignment adjustment, and at the moment, the camera carries out high-resolution shooting with the high-magnification and high-resolution ratio lower than 1 um. The technical scheme has the defects that: because the zoom camera has the problems of picture chromatic aberration and image quality, the alignment between the attaching end of the micro display screen and the attaching surface of the cubic three-color light-combining prism is not accurate.

Based on the above technical defects, it is necessary to provide a camera alignment mechanism, method and system for attaching a cube three-color light-combining prism to a micro display screen, so as to solve the above technical problems.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides a camera alignment mechanism, a camera alignment method and a camera alignment system for the lamination of a cubic tristimulus combination prism and a micro display screen, which not only have compact integral structure, but also can ensure the accurate alignment between the lamination end of the micro display screen and the lamination surface of the cubic tristimulus combination prism, and provide a good foundation for the subsequent adjustment of the relative distance between the lamination end of the micro display screen and the lamination surface of the cubic tristimulus combination prism, thereby greatly reducing the damage rate of the micro display screen and the cubic tristimulus combination prism on the premise of ensuring the lamination accuracy of the micro display screen and the cubic tristimulus combination prism.

The invention discloses a camera alignment mechanism for the attachment of a cubic three-color light-combining prism and a micro display screen, which is used for realizing the alignment between the attachment end of the micro display screen and the attachment surface of the cubic three-color light-combining prism, and comprises at least two first cameras and two second cameras with different multiplying powers, and a reflector, wherein the multiplying power of the first camera is greater than that of the second camera; the reflector is located at the position of a light outlet of the cube three-color light-combining prism and used for changing the light path of emergent light, so that the cameras at different positions with different multiplying powers receive the light emergent from the light outlet of the cube three-color light-combining prism in a time-sharing manner.

In a preferred embodiment of the present invention, the first camera faces the light emitting surface of the cubic tristimulus prism, and is configured to receive the original light emitted from the cubic tristimulus prism; the second camera is arranged at a right angle to the first camera and used for receiving the light rays emitted from the light emitting surface of the cubic three-color light-combining prism and reflected by the reflector.

In a preferred embodiment of the invention, the mirror is connected to a rotary drive unit for driving the mirror in rotation.

In a preferred embodiment of the invention, a position adjustment module for adjusting the spatial position and/or the spatial angle of the camera and/or the mirror is connected to the camera and/or the mirror.

The invention also discloses a method for attaching the cubic three-color light-combining prism and the micro display screen by using the camera alignment mechanism, which comprises the steps of controlling the attachment end of the micro display screen to move to a first preset position, wherein the actual distance between the attachment end of the micro display screen and the attachment surface of the cubic three-color light-combining prism is not more than a first preset distance; a rough alignment step, namely acquiring a frame of the attaching end of the micro display screen from the light-emitting surface of the cubic three-color light-combining prism by using a second camera, and adjusting the position of the attaching end of the micro display screen to enable the frame of the attaching end of the micro display screen to be positioned in the center of the visual field of the second camera; and a fine alignment step, namely, lighting the micro display screen, acquiring an image of the attaching end of the micro display screen from the light-emitting surface of the cubic three-color light-combining prism by using a first camera, acquiring the actual position of the marking pixel point of the attaching end of the micro display screen from the image, and correcting the position of the attaching end of the micro display screen based on the offset of the actual position of the marking pixel point of the attaching end of the micro display screen relative to the theoretical position of the marking pixel point of the attaching end of the micro display screen.

In a preferred embodiment of the present invention, before the rough alignment step, the second camera is used to obtain the border of the adhesion surface of the cubic three-color light combining prism from the light exit surface of the cubic three-color light combining prism, and the position of the second camera and/or the cubic three-color light combining prism is adjusted, so that the border of the adhesion surface of the cubic three-color light combining prism is located in the center of the view field of the second camera.

In a preferred embodiment of the present invention, the obtaining, by the second camera, the border of the attached end of the microdisplay from the light-emitting surface of the cubic tristimulus prism includes rotating a reflector so that light emitted from the light-emitting surface of the cubic tristimulus prism is incident on the reflector, the incident light of the reflector and a normal of the reflector are 45 °, and the second camera receives light emitted from the light-emitting surface of the cubic tristimulus prism and reflected by the reflector; and the first camera is used for acquiring the image of the attaching end of the micro display screen from the light-emitting surface of the cube three-color light-combining prism, and the method comprises the step of rotating the reflector so that the first camera acquires the original image of the attaching end of the micro display screen from the light-emitting surface of the cube three-color light-combining prism.

The invention also discloses a system for attaching the cube three-color light-combining prism to the micro display screen, which comprises a camera alignment mechanism for attaching the cube three-color light-combining prism to the micro display screen; the attaching mechanism is used for acquiring the micro display screen and moving an attaching end of the micro display screen to a position corresponding to an attaching surface of the cubic three-color light-combining prism; and the interval control mechanism is used for controlling the interval between the attaching end of the micro display screen and the attaching surface of the cubic three-color light-combining prism.

In a preferred embodiment of the present invention, the attaching mechanism includes three fixedly disposed attaching mechanisms, and the three attaching mechanisms are disposed opposite to three attaching surfaces of the cubic three-color light-combining prism.

In a preferred embodiment of the present invention, the attaching mechanism comprises a fixedly disposed attaching mechanism;

the three-color light combining mechanism is used for combining three binding surfaces of the cubic three-color light combining prism;

the camera alignment mechanism is connected with the rotating mechanism, and the camera alignment mechanism is fixed relative to the position of the cube three-color light-combination prism.

In a preferred embodiment of the present invention, the attaching mechanism includes an attaching mechanism base, a position adjusting device for adjusting the position of the micro display screen is disposed on the attaching mechanism base, and a material taking device for obtaining the micro display screen is disposed at a free end of the position adjusting device.

In a preferred embodiment of the present invention, the base of the attaching mechanism includes a multi-degree-of-freedom moving platform capable of moving in space, and the position adjusting device includes a six-axis fine alignment platform.

In a preferred embodiment of the present invention, the distance control mechanism includes a distance stop monitoring camera suspended above the cubic three-color-combination prism, and the distance stop monitoring camera is configured to detect a distance between the attaching surface of the cubic three-color-combination prism and the attaching end of the micro display screen.

In a preferred embodiment of the present invention, a dot screen press mechanism is included for illuminating the micro-display.

The invention has the beneficial effects that: the camera alignment mechanism disclosed by the invention has the advantages of simple structure and convenience in use, and through the design scheme of the double cameras and the reflecting mirror, when in coarse alignment, the reflecting mirror is rotated to 45 degrees, and the patterns of the light outlet of the cubic three-color light-combining prism are reflected to the low-magnification camera for processing; when the high-precision precise positioning is carried out, the reflector is rotated to a 0-degree state, the pattern of the light outlet of the cubic three-color light-combining prism is not reflected, and the pattern is directly transmitted to a high-magnification camera for processing, so that the precise measurement of the cubic three-color light-combining prism frame under the rough alignment and the high-resolution measurement of the bonding precision of the micro display screen lower than 1um under the precise alignment are realized;

furthermore, the invention discloses a specific arrangement scheme, which comprises a first camera and a second camera, wherein the first camera is over against the light-emitting surface of the cubic three-color light-combination prism, the first camera and the second camera are arranged vertically, and the multiplying power of the first camera is greater than that of the second camera;

furthermore, the reflector is connected with the rotary driving unit, and the rotary driving unit drives the reflector to rotate, so that light rays emitted from the light emitting surface of the cubic three-color light-combining prism are reflected to different cameras in a time-sharing manner, and the reflector has the advantages of high automation degree and good stability;

furthermore, the camera and/or the reflector are/is connected with a position adjusting module for adjusting the space position and/or the space angle of the camera and/or the reflector, so that the assembly difficulty of the camera and/or the reflector is reduced, the compatibility of the camera and/or the reflector is improved, and the camera and/or the reflector can be suitable for the alignment of micro display screens with various sizes and models and cubic three-color light-combining prisms;

further, the invention discloses a method for attaching a cubic three-color light-combining prism and a micro display screen, which is characterized in that the attachment end of the micro display screen 6 and the attachment surface of the cubic three-color light-combining prism 7 are aligned in two steps based on the camera alignment mechanism, and when the alignment is coarse, a reflector is rotated to 45 degrees, and the pattern of the light outlet of the cubic three-color light-combining prism is reflected to a low-magnification camera for processing; when high accuracy fine positioning, rotatory speculum to 0 state, the pattern of the light-emitting window of cube tristimulus amax light combination prism is not reflected, let it directly launch and handle in the high magnification camera, the accurate measurement of cube tristimulus light combination prism frame under having realized the coarse alignment and the fine resolution that little display screen is less than 1um laminating precision under the accurate alignment are measured, this technical scheme can avoid single variable rate camera to have picture colour difference and image quality problem effectively, improve the counterpoint precision between the laminating end of little display screen and the laminating face of cube tristimulus light combination prism.

Furthermore, the system for the lamination of the cubic three-color light-combining prism and the micro display screen, disclosed by the invention, has the advantages of compact structure, low cost and convenience in assembly and maintenance, and can effectively realize the adjustment of the relative distance between the laminating end of the micro display screen and the laminating surface of the cubic three-color light-combining prism in the laminating process, so that the damage rates of the micro display screen and the cubic three-color light-combining prism are greatly reduced on the premise of ensuring the laminating precision of the micro display screen and the cubic three-color light-combining prism; according to the invention, the alignment between the attaching end of the micro display screen and the attaching surface of the cubic three-color light-combining prism is realized by arranging the camera aligning mechanism, the distance control between the attaching end of the micro display screen and the attaching surface of the cubic three-color light-combining prism is realized by the space detection mechanism based on the relative adjustment between the attaching end of the micro display screen of the attaching mechanism and the attaching surface of the cubic three-color light-combining prism, and the mutual contact and collision between the attaching end of the micro display screen and the attaching surface of the cubic three-color light-combining prism are avoided in the attaching process;

furthermore, according to the technical scheme that the camera alignment mechanism is fixedly arranged at the rotating end of the rotating mechanism, and the laminating mechanism is fixedly arranged beside the rotating mechanism, the rotating mechanism drives three different laminating surfaces of the cubic three-color light combining prism to sequentially rotate to the laminating mechanism, so that the manufacturing cost of the system is effectively reduced;

furthermore, the camera alignment mechanism comprises an alignment camera assembly and a displacement sliding table, wherein the alignment camera assembly and the displacement sliding table are arranged on the rotating mechanism and are fixed relative to the position of the cubic tristimulus combination prism, and the alignment camera assembly is opposite to the light emergent surface of the cubic tristimulus combination prism;

furthermore, the multiplying power of the contraposition camera assembly in the camera contraposition mechanism is adjustable, so that the requirements of different stages of contraposition between the joint end of the micro display screen and the joint surface of the cubic three-color light-combination prism on the multiplying power of the camera are met.

Furthermore, the attaching mechanism of the invention is composed of three parts: the modular design can conveniently and quickly realize the adjustment of the attaching end of the micro display screen, and is convenient to assemble and replace;

furthermore, the base of the laminating mechanism is a multi-degree-of-freedom moving platform capable of moving in space, the position adjusting device is a six-axis fine alignment platform, and the six-axis fine alignment platform are both standard finished parts, so that assembly and replacement are facilitated;

furthermore, the spacing detection mechanism is a fixed-distance parking monitoring camera 5.1, can effectively detect the spacing between the binding surface of the cubic three-color light-combining edge and the binding end of the micro display screen, avoids collision or interference between the binding surface of the three-color light-combining edge and the binding end of the micro display screen in the binding process, and can ensure that the final spacing between the binding surface of the three-color light-combining edge and the binding end of the micro display screen meets the preset standard range;

furthermore, a sliding table adjusting module is connected to the fixed-distance-adjusting parking monitoring camera 5.1, and the sliding table adjusting module is more favorable for installation and debugging of the fixed-distance-adjusting parking monitoring camera 5.1, so that the fixed-distance-adjusting parking monitoring camera is suitable for attaching micro display screens of various models and sizes to a cubic three-color light-combining prism;

furthermore, the invention also comprises at least two suspended glue dispensing devices, each glue dispensing device is connected with a displacement device capable of driving the glue dispensing device to realize displacement in space, and the glue dispensing devices can ensure that the relative positions of the gluing end of the micro display screen and the gluing surface of the cubic three-color light-combining prism are fixed after the gluing process is finished, so that the positions of the two rotating mechanisms are prevented from being deviated when the rotating mechanisms work;

furthermore, the invention also comprises a positioning and clamping mechanism, wherein the positioning and clamping mechanism comprises a lower positioning device and an upper pressing plate, and can stably realize the positioning and clamping of the cubic three-color light-combining prism;

furthermore, the upper pressing plate comprises a connecting part, a transition part and a pressing part, and is arranged between the camera alignment mechanism and the positioning cube three-color light-combining prism, so that the cube three-color light-combining prism can be stably loaded, and the upper pressing plate is prevented from interfering the camera alignment mechanism to capture images;

furthermore, the whole machine is arranged on a base with a portal frame, and has the advantages of compact structure and convenience in assembly, transportation and debugging.

Drawings

FIG. 1 is a schematic view of a first embodiment of a camera alignment mechanism for attaching a three-color cube light-combining prism to a micro-display according to the present invention (two cameras are arranged vertically);

FIG. 2 is a schematic view of a second embodiment of the camera aligning mechanism for attaching the three-color combiner to the micro display screen (two cameras are vertically arranged) according to the present invention;

FIG. 3 is a schematic view of a third embodiment of a camera alignment mechanism for attaching a three-color cube light-combining prism to a micro-display according to the present invention (two cameras are arranged opposite to each other);

FIG. 4 is a schematic view of a first embodiment of a system for bonding a cube tri-color light-combining prism to a micro-display according to the present invention (3 bonding mechanisms);

FIG. 5 is a schematic diagram of a first embodiment of a system for attaching a cube tri-color light-combining prism to a micro-display according to the present invention (3 attaching mechanisms);

FIG. 6 is a schematic view of a second embodiment of a system for bonding a cube three-color light-combining prism to a micro-display according to the present invention (1 bonding mechanism +1 rotating mechanism);

FIG. 7 is a schematic view of a second embodiment of a system for bonding a cube three-color light-combining prism to a micro-display according to the present invention (1 bonding mechanism +1 rotating mechanism);

FIG. 8 is a schematic view of a microdisplay;

in the figure, 1-camera; 2-a mirror; 3-a rotating mechanism; 4-a laminating mechanism; 5-a spacing control mechanism; 6-micro display screen; 7-cubic three-color light-combining prism; 8, positioning and clamping the mechanism; 9-a base; 10-a portal frame and 12-a glue dispensing device; 1.1-a first camera; 1.2-a second camera; 4.1-attaching the base of the mechanism; 4.2-position adjusting means; 4.3-a material taking device; and 5.1-stopping the monitoring camera at a certain distance.

Detailed Description

The invention will now be described in further detail, including the preferred embodiments, with reference to the accompanying drawings and by way of illustration of some alternative embodiments of the invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Further, in the present application, relational terms such as "first" and "second", and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

As shown in fig. 1-2, a camera alignment mechanism for attaching a cubic three-color light-combining prism to a micro display screen is used for aligning an attachment end of the micro display screen 6 with an attachment surface of the cubic three-color light-combining prism 7, and includes at least two cameras 1 and reflectors 2 with different magnifications; the reflector 2 is located at a light outlet of the cube three-color light-combining prism 7 and is used for changing a light path of emergent light, so that the cameras 1 with different magnifications at different positions receive the light emergent from the light outlet of the cube three-color light-combining prism 7 in a time-sharing manner.

In a preferred embodiment of the invention, a first camera 1.1 and a second camera 1.2 are included; the first camera 1.1 is opposite to the light-emitting surface of the cube three-color light-combining prism 7 and is used for receiving the original light emitted from the cube three-color light-combining prism 7; the second camera 1.2 is placed at a right angle to the first camera 1.1, and is configured to receive light emitted from the light emitting surface of the cubic three-color light combining prism 7 and reflected by the reflecting mirror 2, and a magnification of the first camera 1.1 is greater than a magnification of the second camera 1.2; during coarse alignment, the reflector is rotated to 45 degrees, and the patterns of the light outlet of the cubic three-color light-combination prism are reflected to the low-magnification camera for processing; when high accuracy fine positioning, rotatory speculum to 0 state, the pattern of the light-emitting window of cube tristimulus sum light prism of not reflecting lets it directly launch and handles in the high magnification camera, has realized that the accurate measurement of cube tristimulus sum light prism frame under the thick counterpoint is less than the high resolution measurement of 1um laminating precision with little display screen under the accurate counterpoint.

In another embodiment, as shown in fig. 3, a first camera 1.1 and a second camera 1.2 are included, the first camera 1.1 and the second camera 1.2 being arranged oppositely, both on a horizontal line. During rough alignment, rotating the reflector to 45 degrees, namely the normal of the reflector and the horizontal line form 45 degrees, and reflecting the pattern of the light outlet of the cubic three-color light-combination prism into a low-magnification camera for processing; when high accuracy fine positioning, the rotating mirror makes the normal line of speculum is 135 with the water flat line, will light the pattern reflection of display screen back cube tristimulus sum light prism's light-emitting window to handle in the high magnification camera, has realized that the accurate measurement of cube tristimulus sum light prism frame under the coarse alignment is less than the high resolution measurement of 1um laminating precision with little display screen under the accurate alignment. Compared with the solution in which the first camera 1.1 and the second camera 1.2 are arranged perpendicular to each other, in the high-precision fine positioning stage, the precision of the solution is slightly lower, because the influence of phase difference due to reflection needs to be considered.

It is further noted that the present invention is not limited to the above two specific embodiments, and the number of pages in the case that a specific included angle exists between the two central optical axes of the first camera 1.1 and the second camera 1.2 is within the protection scope of the present invention.

In a preferred embodiment of the invention, the mirror 2 is connected to a rotary drive unit which drives it in rotation.

In a preferred embodiment of the invention, a position adjustment module for adjusting the spatial position and/or the spatial angle of the camera 1 and/or the mirror 2 is connected thereto.

The invention also discloses a method for attaching the cube three-color light-combining prism and the micro display screen by using the camera alignment mechanism, which comprises the steps of controlling the attachment end of the micro display screen 6 to move to a first preset position, wherein the actual distance between the attachment end of the micro display screen 6 and the attachment surface of the cube three-color light-combining prism 7 is not more than a first preset distance;

a rough alignment step, namely acquiring a frame of an attaching end of the micro display screen 6 from a light-emitting surface of the cubic three-color light-combining prism 7 by using a second camera 1.2 with a lower magnification in the at least two cameras 1 with different magnifications, and adjusting the position of the attaching end of the micro display screen 6 to enable the frame of the attaching end of the micro display screen 6 to be positioned in the center of the visual field of the second camera 1.2;

and a fine alignment step, namely, lighting the micro display screen 6, acquiring an image of the bonding end of the micro display screen 6 from the light-emitting surface of the cubic three-color light-combining prism 7 by using the first camera 1.1 with higher magnification among the at least two cameras 1 with different magnifications, acquiring the actual position of the marking pixel point of the bonding end of the micro display screen 6 from the image, and correcting the position of the bonding end of the micro display screen 6 based on the offset of the actual position of the marking pixel point of the bonding end of the micro display screen 6 relative to the theoretical position of the marking pixel point of the bonding end of the micro display screen 6.

In a preferred embodiment of the present invention, before the rough alignment step, the second camera 1.2 is used to obtain the border of the adhesion surface of the cubic three-color light combining prism 7 from the light exit surface of the cubic three-color light combining prism 7, and the position of the or cubic three-color light combining prism 7 is adjusted, so that the border of the adhesion surface of the cubic three-color light combining prism 7 is located in the center of the visual field of the second camera 1.2.

In a preferred embodiment of the present invention, the obtaining of the frame of the attached end of the micro display screen 6 from the light emitting surface of the cubic three-color combining prism 7 by using the second camera 1.2 includes rotating the reflector 2 so that the light emitted from the light emitting surface of the cubic three-color combining prism 7 is incident on the reflector 2, the incident light of the reflector 2 is 45 ° to the normal of the reflector 2, and the second camera 1.2 receives the light emitted from the light emitting surface of the cubic three-color combining prism 7 and reflected by the reflector 2;

the method includes the steps that the first camera 1.1 is used for obtaining an image of the attaching end of the micro display screen 6 from the light emitting surface of the cube three-color light-combination prism 7, and the reflecting mirror 2 is rotated, so that the first camera 1.1 obtains an original image of the attaching end of the micro display screen 6 from the light emitting surface of the cube three-color light-combination prism 7.

To facilitate the understanding of the method according to the invention, the following will be explained in further detail, taking as an example an embodiment in which the second camera 1.2 is placed at right angles to the first camera 1.1: the method comprises the steps of controlling the attaching end of the micro display screen 6 to move to a first preset position, wherein the actual distance between the attaching end of the micro display screen 6 and the attaching surface of the cubic three-color light-combining prism 7 is not larger than a first preset distance (pointed out, the first preset distance is preset according to the model of a product and can be regarded as a reference distance);

a coarse alignment step, namely acquiring a frame of the attaching end of the micro display screen 6 from the light-emitting surface of the cubic three-color light-combining prism 7 by using the second camera 1.2, and adjusting the position of the attaching end of the micro display screen 6 to enable the frame of the attaching end of the micro display screen 6 to be positioned in the center of the visual field of the second camera 1.2;

a fine alignment step, namely, a lighted micro display screen 6, acquiring an image of an attaching end of the micro display screen 6 from a light-emitting surface of a cubic three-color light-combining prism 7 by using a first camera 1.1, acquiring an actual position of a marking pixel point of the attaching end of the micro display screen 6 from the image, and correcting the position of the attaching end of the micro display screen 6 based on the offset of the actual position of the marking pixel point of the attaching end of each micro display screen 6 relative to the theoretical position of the marking pixel point of the attaching end of each micro display screen 6;

the magnification of the second camera 1.2 is smaller than the magnification of the first camera 1.1.

In a preferred embodiment of the present invention, before the rough alignment step, the second camera 1.2 is used to obtain the border of the adhesion surface of the cubic three-color combining prism 7 from the light emitting surface of the cubic three-color combining prism 7, and the positions of the second camera 1.2 and/or the cubic three-color combining prism 7 are adjusted, so that the border of the adhesion surface of the cubic three-color combining prism 7 is located in the center of the visual field of the second camera 1.2.

In a preferred embodiment of the present invention, before the first camera 1.1 is used to obtain the image of the attached end of the micro display 6 from the light-emitting surface of the cube three-color light-combining prism 7, the method includes rotating the reflector 2 so that the first camera 1.1 can receive the light emitted from the light-emitting surface of the cube three-color light-combining prism 7.

As shown in fig. 4-5, the present invention further discloses a system for attaching the cube three-color light-combining prism to the micro display screen, which comprises a camera alignment mechanism for attaching the cube three-color light-combining prism to the micro display screen;

the attaching mechanism 4 is used for acquiring the micro display screen 6 and moving an attaching end of the micro display screen 6 to a position corresponding to an attaching surface of the cubic three-color light-combining prism 7;

the space control mechanism 5 is used for controlling the space between the attaching end of the micro display screen 6 and the attaching surface of the cubic three-color light-combining prism 7;

wherein, laminating mechanism 4 is used for will showing different monochromatic little display screen 6 and laminating to the three binding face that the cube tristimulus sum light prism 7 that treats the laminating corresponds, and counterpoint camera mechanism is used for just treating the play plain noodles that the cube tristimulus sum light prism 7 of laminating, and is used for cube tristimulus sum light prism 7 and/or little display screen 6's location, and interval control mechanism 5 is used for detecting the distance between little display screen 6 to the binding face that corresponds.

It can be understood that, with the microdisplay bonding system in this embodiment, the microdisplay 6 can be bonded to the cube three-color light-combining prism 7, and during the bonding process, the alignment camera mechanism disposed on the light exit surface of the cube three-color light-combining prism 7 can be used for detecting to adjust the positions of the microdisplay 6 and/or the cube three-color light-combining prism 7, thereby completing the bonding between the microdisplay and the cube three-color light-combining prism.

It should be noted that in this embodiment, the bonding surface of the cube three-color combining prism 7 is used to bond the monochromatic micro-display 6 (for example, R, G, B), and the light emitting surface of the cube three-color combining prism 7 is used as a light outlet and does not participate in bonding the micro-display 6. The specific arrangement and distribution of the bonding surface and the light-emitting surface need to be determined by combining the shape of the cubic three-color light-combining prism 7. Due to the cubic three-color light-combining prism 7, for example, a group of opposite two surfaces can be selected as working surfaces during feeding and placing respectively, and the two working surfaces can be designed into frosted surfaces to increase friction. Four surfaces between the working surfaces during feeding and placing are three binding surfaces and light emitting surfaces.

The alignment camera mechanism is used for detecting the offset of the micro display screen 6 on the attaching mechanism 4, and it should be noted that the alignment camera mechanism in this embodiment is used for taking a picture at a position right opposite to the light-emitting surface of the cube three-color light-combining prism 7 to obtain the offset of the micro display screen 6.

The attaching mechanism 4 is used to adjust the position of the micro-display 6 thereon, and the adjustment range is derived from the offset of the micro-display 6 obtained by the alignment camera mechanism 1. After the micro display screen 6 is adjusted in place, the corresponding micro display screen 6 is attached to three attachment surfaces corresponding to the cubic three-color light-combining prism 7 to be attached by the attachment mechanism 4.

It can be understood that, according to the arrangement position and the arrangement number of the attaching mechanisms 4, the present invention can be divided into two embodiments: the first embodiment is as follows: the attaching mechanism 4 comprises three attaching mechanisms 4 which are fixedly arranged, and the three attaching mechanisms 4 are arranged just opposite to three attaching surfaces of the cubic three-color light-combining prism 7.

In a preferred embodiment of the present invention, the attaching mechanism 4 includes an attaching mechanism base 4.1, a position adjusting device 4.2 for adjusting the position of the micro display screen 6 is disposed on the attaching mechanism base 2, and a material taking device 4.3 for obtaining the micro display screen 6 is disposed at the free end of the position adjusting device 22.

In a preferred embodiment of the present invention, the attaching mechanism base 4.1 includes a multi-degree-of-freedom moving platform capable of moving in space, and the position adjusting device 4.2 includes a six-axis fine alignment platform, i.e., the position adjusting device 4.2 can move along XYZ axes and can rotate along XYZ axes.

In a preferred embodiment of the invention, the material extracting device 4.3 is used for acquiring the micro-display 6 to be attached, for example, the material extracting device may be a suction cup. In some embodiments, the microdisplay bonding system further comprises a feeding mechanism, the feeding mechanism comprises a grabbing device and an adsorption device which are integrally arranged and used for feeding, the grabbing device of the feeding mechanism is used for grabbing the microdisplay 6 and then transmitting the microdisplay 6 to the fetching device 4.3 for adsorption, and the adsorption device of the feeding mechanism is used for adsorbing the cubic prism and feeding the cubic prism to a fixing mechanism of the prism, so that the microdisplay 6 can be bonded conveniently.

In a preferred embodiment of the present invention, the spacing control mechanism 5 comprises a spacer parking monitoring camera 5.1 suspended above the cubic tri-color combiner prism 7, the spacer parking monitoring camera 5.1 being configured to detect a spacing between the attachment face of the cubic tri-color combiner prism 7 and the attachment end of the micro display screen 6. The fixed-distance parking monitoring camera 5.1 is used for detecting the distance between the micro display screen 6 and the corresponding binding surface. After laminating mechanism 4 acquires little display screen 6, laminating mechanism 4 can carry little display screen 6 according to predetermineeing the route and move towards cube tristimulus composition prism 7, need carry out the essence to little display screen 6 before the laminating and counterpoint, and before the essence counterpoint, then need stop laminating mechanism 4 temporarily, the position that laminating mechanism 4 here was stopped needs strict control to avoid influencing the laminating of little display screen 6 and arouse even the damage. Therefore, the fixed-distance parking monitoring camera 5.1 is arranged in the embodiment to ensure that the distance between the micro display screen 6 and the binding surface is in a reasonable range. In a preferred embodiment, the microdisplay bonding system includes three bonding mechanisms 4, and the three bonding mechanisms 4 are arranged to face the three bonding surfaces of the cubic three-color light combining prism 7. That is to say, when the three-color-combination cube 7 is adjusted in place, the three bonding mechanisms 4 are opposite to the three bonding surfaces of the three-color-combination cube 7, and the alignment camera mechanism 1 is opposite to the light-emitting surface of the three-color-combination cube 7. It will be appreciated that the provision of three bonding mechanisms 4 may improve the efficiency of bonding without having to wait for a bonding mechanism 4 until the bonding of a microdisplay is completed, at least in some processes, and may utilize three bonding mechanisms 4 to work simultaneously.

Furthermore, the fixed stop surveillance camera 5.1 can be adjusted in multiple directions in space to detect the distance between the micro display screen 6 to the corresponding attachment face above the cubic tristimulus prism 7. In some embodiments, the fixed-distance parking monitoring camera 5.1 captures the side micro display screen 6 and the corresponding attachment surface from above the cube three-color light-combining prism 7 to obtain the distance therebetween, so as to control the distance between the side surface of the prism and the corresponding micro display screen 6 in the whole attachment process.

It can be understood that, before laminating mechanism 4 laminates micro display screen 6, need counterpoint micro display screen 6, if the position that micro display screen 6 docked is too far and near, micro display screen 6 is at the in-process of counterpointing then not enough regulation space, if the position that micro display screen 6 docked is too far, because the influence of divergent light, the image area is very big, be difficult for detecting, distance parking monitoring camera 5.1 in this embodiment is in order to guarantee this spacing distance promptly for the distance between micro display screen 6 and the corresponding binding face is close enough and has enough regulation space.

It should be noted that the distance control mechanism 5 is not limited to the above-mentioned fixed-distance parking monitoring camera 5.1, and other mechanical structures capable of ensuring that the attaching end of the micro display 7 is attached to the attaching surface of the cubic three-color light-combining prism 7 in parallel also belong to the protection scope of the present invention.

In a preferred embodiment of the invention, a dot screen press mechanism is included for illuminating the micro-display 6.

In a preferred embodiment of the present invention, the microdisplay bonding system further includes three dispensing devices 12, and the three dispensing devices 12 are respectively located at the sides of the three bonding mechanisms 4. Each of the dispensing devices 12 includes a dispensing alignment camera. The dispensing device 12 is used for dispensing after the material taking device obtains the micro display screen 6 to be bonded, or dispensing at a gap between the micro display screen 6 and the corresponding bonding surface after the corresponding micro display screen 6 is precisely positioned.

In a preferred embodiment of the present invention, the present invention further comprises a prism attitude fine adjustment platform for adjusting the attitude of the cubic three-color light-combination prism 7. It can be understood that, for the laminating that can be accurate, before on the laminating face of the cube three-color light-combination prism 7 with the laminating of little display screen 6, need adjust the gesture of cube three-color light-combination prism 7 earlier, the gesture of cube three-color light-combination prism 7 can be obtained through counterpoint camera mechanism.

In a preferred embodiment of the present invention, the prism attitude fine tuning platform can be used to support the cubic three-color-combination prism 7, and on the other hand, the platform can rotate to adjust the orientation of the cubic three-color-combination prism 7, so that the cubic three-color-combination prism 7 reaches a predetermined position. For example, cube tristimulus combination prism has adopted under the condition of three laminating mechanism 4 simultaneously, because laminating mechanism 4 is fixed the setting, need drive cube tristimulus combination prism 7 through the rotation of prism gesture fine setting platform this moment and rotate for three binding face and the alignment of three laminating mechanism 4 of cube tristimulus combination prism 7.

In a preferred embodiment of the present invention, a pressing mechanism is further included for pressing and fixing the cube three-color light-combining prism 7. It can be understood that, because the cube three-color light-combination prism 7 is placed on the prism posture fine adjustment platform, and then is pressed and held above through the pressing mechanism, the fixation of the cube three-color light-combination prism 7 can be realized.

In a preferred embodiment of the invention, the adhesive tape further comprises a curing mechanism for curing the adhesive tape, and the curing mechanism can be adjusted in multiple spatial directions. In some embodiments, the curing mechanism may be an ultraviolet lamp.

It can be understood that, after dispensing is completed, in order to make the micro display screen 6 stably adhere to the adhering surface of the cubic three-color light-combining prism 7, the ultraviolet lamp is required to irradiate the dispensing point to complete curing, and in order to achieve a better curing effect, it is desirable that the ultraviolet lamp can well cover the dispensing area, so that the present embodiment further includes an adjusting mechanism for adjusting the ultraviolet lamp in multiple directions, so as to facilitate rotation of the irradiation angle of the ultraviolet lamp.

To simplify the construction of the microdisplay mount system and to provide a desirable layout, in some embodiments the pitch detection mechanism, the pressing mechanism and the curing mechanism are integrated into a single console.

In a preferred embodiment of the present invention, a dot screen pressing mechanism is further included for lighting the micro display screen 6. When the alignment camera mechanism detects the micro display screen 6 on the attaching mechanism 4, sometimes the screen of the micro display screen 6 needs to be lighted, the micro display screen 6 generally includes three parts, as shown in fig. 8, a substrate 6.1 with a screen part for attaching, a lighting opening 6.3, and an FPC flexible circuit board 6.2 connecting the substrate 6.1 and the lighting opening 6.3, in the detection stage, the screen part of the micro display screen 6 is usually fixed on the attaching surface, and the lighting screen crimping mechanism will directly act on the lighting opening 6.3 to light the micro display screen 6.

In a preferred embodiment of the present invention, there are three dot screen pressing mechanisms, which are correspondingly arranged along three abutting surfaces of the cubic three-color light-combining prism 7. It can be understood that cube tristimulus combination prism has adopted the condition of three laminating mechanism 2 simultaneously, when three screen was lighted simultaneously this moment, then need set up three point screen crimping mechanism, and it corresponds the setting along three binding face of cube tristimulus combination prism 7.

In a preferred embodiment of the present invention, in order to facilitate fixing of each component, the microdisplay bonding system further includes a base plate for carrying each component, and for example, the alignment camera mechanism, the bonding mechanism 4, the pitch control mechanism, and the prism attitude fine-tuning platform, which need to be fixedly arranged, are all fixed on the base plate.

When the attaching mechanism 4 includes a fixedly disposed attaching mechanism, the second embodiment is as follows:

as shown in fig. 6-7, the system for bonding the cube three-color light-combining prism and the micro display screen disclosed by the present invention includes a camera alignment mechanism for aligning the bonding end of the micro display screen 6 and the bonding surface of the cube three-color light-combining prism 7, and the camera alignment mechanism is opposite to the light-emitting surface of the cube three-color light-combining prism 7; the attaching mechanism 4 is used for acquiring the micro display screen 6 and moving an attaching end of the micro display screen 6 to a position corresponding to an attaching surface of the cubic three-color light-combination prism 7; the space control mechanism 5 is used for controlling the space between the attaching end of the micro display screen 6 and the attaching surface of the cubic three-color light-combining prism 7; the rotating mechanism 3 is used for rotating the cubic three-color light combination prism 7 to enable different binding surfaces of the cubic three-color light combination prism 7 to correspond to the binding mechanism 4 in a time-sharing manner; the camera aligning mechanism is connected with the rotating mechanism 3, and the camera aligning mechanism 1 is fixed relative to the position of the cubic three-color light-combination prism 7.

It can be understood that, with the system for laminating the cube three-color light-combining prism and the micro display screen in this embodiment, it can laminate the micro display screen 6 to the cube three-color light-combining prism 7, and in the laminating process, the camera aligning mechanism 1 and the spacing control mechanism 5 placed on the light-emitting surface of the cube three-color light-combining prism 7 can be utilized to cooperate to adjust the relative position between the laminating end of the micro display screen 6 and the laminating surface of the cube three-color light-combining prism 7, thereby completing the laminating of the two.

It should be noted that in this embodiment, the bonding surface of the cube three-color-combining prism 7 is used to bond the monochromatic microdisplay 6 (for example, R, G, B), and the light-emitting surface of the cube three-color-combining prism 7 is used as a light-emitting port and does not participate in bonding the microdisplay 6. The specific arrangement and distribution of the bonding surface and the light-emitting surface need to be determined by combining the shape of the cubic three-color light-combining prism 7. Due to the cubic three-color light-combining prism 7, for example, a group of opposite two surfaces can be selected as working surfaces during feeding and placing respectively, and the two working surfaces can be designed into frosted surfaces to increase friction. Four surfaces between the working surfaces during feeding and placing are three binding surfaces and light emitting surfaces.

Meanwhile, it is to be noted that the camera alignment mechanism is used for detecting the offset of the micro display screen 6 on the attachment mechanism 4, and the camera alignment mechanism 1 is used for taking a picture at the position right opposite to the light-emitting surface of the cube three-color light-combining prism 7 so as to obtain the offset of the attachment end of the micro display screen 6. It should be noted that, in the attaching process, in order to ensure the accuracy of the attaching, obtaining the offset of the attaching end of the micro display screen 6 is divided into multiple stages, for example, firstly, the frame of the prism and the frame of the light-emitting area of the micro display screen need to be roughly aligned, so that the frames of the prism and the frame of the light-emitting area of the micro display screen are both located in the center of the field of view of the camera, and at this time, the low-magnification camera needs to be used to take all the fields of view. Then the alignment camera assembly shoots the pixel dot matrix subsequently to carry out fine alignment adjustment, and the high-resolution shooting lower than 1um is carried out by the camera with high magnification and high resolution.

The attaching mechanism 4 is used for adjusting the position of the micro display screen 6 thereon, and the adjustment range is derived from the offset of the micro display screen 6 obtained by the camera aligning mechanism 1. After the micro display screen 6 is adjusted in place, the corresponding micro display screen 6 is attached to three attachment surfaces corresponding to the cubic three-color light-combining prism 7 to be attached by the attachment mechanism 4.

The spacing control mechanism 5 is used for detecting the distance between the micro display screen 6 and the corresponding binding surface. After laminating mechanism 4 acquires little display screen 6, laminating mechanism 4 can carry little display screen 6 according to predetermineeing the route and move towards cube tristimulus conjugate prism 7, need carry out the accurate counterpoint to little display screen 6 before the laminating, and before the accurate counterpoint, then need stop laminating mechanism 4 temporarily, the position that laminating mechanism 4 was here berthhed needs strict control to thereby avoid influencing little display screen 6 and cube tristimulus conjugate prism 7 to take place to interfere and arouse the damage at the laminating in-process. Therefore, the distance control mechanism 5 is arranged in the embodiment, so that the distance between the attaching end of the micro display screen 6 and the attaching surface of the cubic three-color light-combining prism 7 can be ensured within a reasonable range.

Preferably, a camera alignment mechanism is fixedly arranged at the rotating end of the rotating mechanism 3, a laminating mechanism 4 is fixedly arranged beside the rotating mechanism 3, a spacing control mechanism 5 is fixedly arranged beside the rotating mechanism 3, and the laminating mechanism 4 and the rotating mechanism 3 are arranged at corresponding positions; the rotating mechanism 3 drives the camera alignment mechanism 1 and the square three-color light-combination prism 7 to synchronously rotate, and each binding surface of the square three-color light-combination prism 7 is respectively moved to the corresponding positions of the binding mechanism 4 and the spacing control mechanism 5. It should be pointed out that, in the above technical scheme, time-sharing bonding of 3 bonding surfaces on the cubic three-color light-combining prism 7 can be realized only by one bonding mechanism 4; after 1 binding face finishes laminating on cube three colour closes light prism 7, rotary mechanism 3 rotates 90 degrees, laminates 1 binding face about the cube three colour closes light prism 7.

Preferably, the attaching mechanism 4 comprises an attaching mechanism base 4.1 fixedly arranged beside the rotating mechanism 3, a position adjusting device 4.2 for adjusting the position of the micro display screen 6 is arranged on the attaching mechanism base 4.1, and a material taking device 4.3 for obtaining the micro display screen 6 is arranged at the free end of the position adjusting device 4.2; extracting device 4.3 is used for acquireing the micro display screen 6 that waits to laminate, for example extracting device 4.3 can be the sucking disc.

Preferably, in order to flexibly control the movement of the pasting mechanism 4 along various directions, the pasting mechanism base 4.1 comprises a multi-degree-of-freedom moving platform capable of moving in space, and the position adjusting device 4.2 comprises a six-axis fine alignment platform, i.e. the alignment device 4.2 can move along the XYZ axes and can rotate around the XYZ axes.

Preferably, the distance control mechanism 5 includes a distance parking monitoring camera 5.1 suspended above the cube three-color light-combining prism 7, and the distance parking monitoring camera 5.1 is used for detecting the distance between the attaching surface of the cube three-color light-combining prism 7 and the attaching end of the micro display screen 6. The fixed-distance parking monitoring camera 5.1 is used for detecting the distance between the micro display screen 6 and the corresponding binding surface. After laminating mechanism 4 acquires little display screen 6, laminating mechanism 4 can carry little display screen 6 according to predetermineeing the route and move towards cube tristimulus combination prism 7, need carry out the essence to little display screen 6 before the laminating and counterpoint, and before the essence counterpoint, then need berth laminating mechanism 4 temporarily, the position that laminating mechanism 4 was berthhed here needs strict control to avoid influencing little display screen 6's laminating and arouse the damage even. Therefore, the fixed-distance parking monitoring camera 5.1 is arranged in the embodiment to ensure that the distance between the micro display screen 6 and the binding surface is in a reasonable range. In a preferred embodiment, the microdisplay bonding system includes three bonding mechanisms 4, and the three bonding mechanisms 4 are arranged to face the three bonding surfaces of the cubic three-color light combining prism 7. That is to say, when the three-color-combination cube 7 is adjusted in place, the three bonding mechanisms 4 are opposite to the three bonding surfaces of the three-color-combination cube 7, and the alignment camera mechanism 1 is opposite to the light-emitting surface of the three-color-combination cube 7. It will be appreciated that the provision of three bonding mechanisms 4 may improve the efficiency of bonding without having to wait for a bonding mechanism 4 until the bonding of a microdisplay is completed, at least in some processes, and may utilize three bonding mechanisms 4 to work simultaneously.

In addition, the fixed parking monitoring camera 5.1 can be adjusted in a plurality of spatial directions to detect the distance between the micro display screen 6 and the corresponding attaching surface above the cubic three-color light-combining prism 7. In some embodiments, the fixed-distance parking monitoring camera 5.1 captures the side micro display 6 and the corresponding attaching surface from above the cubic tristimulus prism 7 to obtain the distance therebetween, so as to control the distance between the side of the prism and the corresponding micro display 6 in the whole attaching process.

Preferably, at least two suspended glue dispensing devices 12 are provided, the two glue dispensing devices 12 are symmetrically arranged relative to the cubic three-color light combining prism 7, and each glue dispensing device 12 is connected with a displacement device capable of driving the displacement device to realize displacement in space.

Preferably, each dispensing device 12 includes a dispensing alignment camera, and the dispensing device 12 is configured to dispense after the material taking device obtains the micro display screen 6 to be bonded, or dispense at a gap between the micro display screen 6 and the corresponding bonding surface after the micro display screen 6 is precisely positioned.

Preferably, the device comprises a positioning and clamping mechanism for positioning and clamping the cubic three-color light-combining prism 7; the positioning and clamping mechanism 8 comprises a lower positioning device 81 for positioning the cube three-color light-combining prism 7 and an upper pressing plate 82 for lifting and pressing the cube three-color light-combining prism 7, the lower positioning device 81 is arranged on the rotating end of the rotating mechanism 3, the upper pressing plate 82 does not interfere with the spacing control mechanism to detect the spacing between the bonding end of the micro display screen 6 and the bonding surface of the cube three-color light-combining prism 7, it needs to be pointed out that the upper pressing plate 82 can be lifted through a sliding table module, when the bonding mechanism 4 and the spacing control mechanism 5 are cooperatively used for bonding the bonding end of the micro display screen 6 and the bonding surface of the cube three-color light-combining prism 7, the upper pressing plate 82 is loaded on the upper end surface of the cube three-color light-combining prism 7, when the bonding mechanism 4 and the spacing control mechanism 5 are cooperatively used for bonding the bonding end of the micro display screen 6 and the bonding surface of the cube three-color light-combining prism 7, after the upper press plate 82 is lifted and separated from the upper end face of the cube three-color light-combination prism 7, the rotating mechanism 3 can work and rotate 90 degrees, and the next binding face of the cube three-color light-combination prism 7 is rotationally moved to the corresponding position of the binding mechanism 4 and the spacing control mechanism 5.

Further, it should be noted that "the upper press plate 82 does not interfere with the gap control mechanism 5 to detect the gap between the bonding end of the micro display screen 6 and the bonding surface of the cube three-color light-combining prism 7" can be understood as follows: the symmetrical central axis of the projection shape of the positioning and clamping mechanism 8 on the horizontal plane coincides with the symmetrical central axis of the projection shape of the camera alignment mechanism on the horizontal plane or has an included angle, when the fixed-distance parking monitoring camera 5.1 shoots the attaching end of the micro display screen 6 and the attaching surface of the cube three-color light-combining prism 7 from top to bottom, the upper pressure plate 82 cannot block the shooting path.

Preferably, lower positioner 81 is the prism gesture fine setting platform that is used for adjusting cube tristimulus combination prism 7 gesture, and it can be understood that, in order to can be accurate laminating, before on the laminating face of the cube tristimulus combination prism 7 with the laminating of little display screen 6, need adjust the gesture of cube tristimulus combination prism 7 earlier, the gesture of cube tristimulus combination prism 7 can be obtained through camera counterpoint mechanism 1. Prism gesture fine setting platform can be used for bearing cube tristimulus combination prism 7 on the one hand, and on the other hand can adjust the position of cube tristimulus combination prism 7 through the platform rotation for cube tristimulus combination prism 7 reaches preset position. For example, cube tristimulus combination prism has adopted under the condition of three laminating mechanism 4 simultaneously, because laminating mechanism 4 is fixed the setting, need drive cube tristimulus combination prism 7 through the rotation of prism gesture fine setting platform this moment and rotate for the binding face of cube tristimulus combination prism 7 aligns with laminating mechanism 4.

Preferably, the upper press plate 82 includes a connecting portion 82.1, a transition portion 82.2 and a pressing portion 82.3, the pressing portion 82.3 is arranged in parallel with the upper end face of the cubic three-color light-combining prism 7, the transition portion 82.2 is located between the connecting portion 82.1 and the pressing portion 82.3, and an included angle between the transition portion 82.2 and the connecting portion 82.1 is an obtuse angle.

Preferably, including base 9, the rigid coupling has rotary mechanism 3 and laminating mechanism 4 on base 9, and the rigid coupling has camera counterpoint mechanism 1 on rotary mechanism 3, and the rigid coupling has portal frame 10 on base 9, is connected with the distance on portal frame 10 and berths monitoring camera 5.1.

Preferably, at least two symmetrically arranged dispensing devices 12 are arranged on the gantry 10.

Preferably, the adhesive tape further comprises a curing mechanism for curing the adhesive tape, and the curing mechanism can be adjusted in multiple spatial directions. In some embodiments, the curing mechanism may be an ultraviolet lamp.

It can be understood that, after completing the point, in order to make the microdisplay 6 stably attached to the attaching surface of the three-color light combining cube prism 7, it is still necessary to use the uv lamp to irradiate the point to complete the curing, and in order to achieve a better curing effect, it is desirable that the uv lamp can well cover the point region, so the present embodiment further includes an adjusting mechanism for adjusting the uv lamp in multiple directions, which is convenient for rotating the irradiation angle of the uv lamp.

Preferably, the micro display screen further comprises a dot screen pressing mechanism which is used for lighting the micro display screen. When the alignment camera mechanism detects the micro display screen on the attaching mechanism, sometimes the screen of the micro display screen needs to be lighted, the micro display screen 6 generally comprises three parts, namely a substrate 6.1 with a screen part for attaching, a lighting opening 6.3 and an FPC (flexible printed circuit) flexible circuit board 6.2 connecting the substrate 6.1 and the lighting opening 6.3, in the detection stage, the screen part of the micro display screen 6 is usually fixed on the attaching surface, and the lighting screen crimping mechanism can directly act on the lighting opening 6.3 to light the micro display screen 6.

In summary, the system for bonding the cube three-color light-combining prism and the micro display screen in the present invention includes the camera alignment mechanism and the bonding mechanism 4, which are fixedly disposed, the bonding mechanism 4 can bond the micro display screen 6 to the cube three-color light-combining prism 7, and the alignment camera mechanism disposed on the light-emitting surface of the cube three-color light-combining prism 7 can be used for detecting during the bonding process to adjust the position of the micro display screen 6, and the distance control mechanism 5 can ensure the distance between the micro display screen 6 and the cube three-color light-combining prism 7, so that the distance between the micro display screen 6 and the corresponding bonding surface is close enough and has enough adjustment space to complete the bonding of the micro display screen 6 and the corresponding bonding surface. Can control Micro LED screen and cube tristimulus amalgamation prism like this at the relative distance of laminating in-process to solve the easy impaired problem of Micro LED screen when accurate counterpoint.

It should be understood by those skilled in the art that the above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, and any modification, combination, replacement, improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a camera counterpoint mechanism that is used for cube tristimulus prism and little display screen laminating which characterized in that: the alignment device is used for realizing alignment between an attaching end of a micro display screen (6) and an attaching surface of a cubic three-color light-combining prism (7), and comprises at least two first cameras (1.1) and two second cameras (1.2) with different magnifications and a reflector (2), wherein the magnification of the first camera (1.1) is greater than that of the second camera (1.2);

the reflector (2) is located at a light outlet of the cube three-color light-combining prism (7) and used for changing a light path of emergent light, so that the cameras (1) with different magnifications at different positions receive the light emergent from the light outlet of the cube three-color light-combining prism (7) in a time-sharing manner.

2. The camera alignment mechanism for attaching a cube tri-color light-combining prism to a micro-display according to claim 1, further comprising:

the first camera (1.1) is opposite to the light-emitting surface of the cube three-color light-combining prism (7) and is used for receiving original light rays emitted from the cube three-color light-combining prism (7);

the second camera (1.2) is arranged at a right angle to the first camera (1.1) and is used for receiving light rays which are emitted from the light emitting surface of the cube three-color light-combination prism (7) and reflected by the reflector (2).

3. The camera aligning mechanism of claim 1 for attaching a cube tri-color light-combining prism to a micro-display screen, wherein: the reflector (2) is connected with a rotary driving unit for driving the reflector to rotate.

4. The camera aligning mechanism of claim 1 for attaching a cube tri-color light-combining prism to a micro-display screen, wherein: the camera (1) and/or the reflector (2) are/is connected with a position adjusting module for adjusting the space position and/or the space angle.

5. A method for attaching a cube three-color light-combining prism to a micro display screen by using the camera alignment mechanism of any one of claims 1 to 4, comprising the following steps: comprises that

Controlling the attaching end of the micro display screen (6) to move to a first preset position, wherein the actual distance between the attaching end of the micro display screen (6) and the attaching surface of the cubic three-color light-combination prism (7) is not larger than a first preset distance;

a coarse alignment step, namely acquiring a frame of the attaching end of the micro display screen (6) from a light-emitting surface of the cubic three-color light-combining prism (7) by using the second camera (1.2), and adjusting the position of the attaching end of the micro display screen (6) to enable the frame of the attaching end of the micro display screen (6) to be positioned in the center of the visual field of the second camera (1.2);

and a fine alignment step, namely lighting the micro display screen (6), acquiring an image of the attaching end of the micro display screen (6) from the light-emitting surface of the cube three-color light-combining prism (7) by using the first camera (1.1), acquiring the actual position of the marking pixel point of the attaching end of the micro display screen (6) from the image, and correcting the position of the attaching end of the micro display screen (6) based on the offset of the actual position of the marking pixel point of the attaching end of the micro display screen (6) relative to the theoretical position of the marking pixel point of the attaching end of the micro display screen (6).

6. The method of bonding a cube tristimulus prism to a microdisplay of claim 5 in which:

before the rough alignment step, a second camera (1.2) is used for obtaining a frame of a binding face of the cubic three-color light-combining prism (7) from a light-emitting face of the cubic three-color light-combining prism (7), and the position of the second camera (1.2) and/or the cubic three-color light-combining prism (7) is adjusted, so that the frame of the binding face of the cubic three-color light-combining prism (7) is positioned in the center of the visual field of the second camera (1.2).

7. The method of bonding a cube tristimulus prism to a microdisplay of claim 5 in which:

the frame of the attaching end of the micro display screen (6) is obtained from the light-emitting surface of the cube three-color light-combining prism (7) by using a second camera (1.2), the frame comprises a rotating reflector (2), so that light emitted from the light-emitting surface of the cube three-color light-combining prism (7) is incident to the reflector (2), the incident light of the reflector (2) and the normal line of the reflector (2) are 45 degrees, and the second camera (1.2) receives the light emitted from the light-emitting surface of the cube three-color light-combining prism (7) and reflected by the reflector (2);

the method comprises the steps of acquiring an image of a bonding end of the micro display screen (6) from a light-emitting surface of the cube three-color light-combining prism (7) by using the first camera (1.1), and rotating the reflector (2) to enable the first camera (1.1) to acquire an original image of the bonding end of the micro display screen (6) from the light-emitting surface of the cube three-color light-combining prism (7).

8. The utility model provides a system that is used for cube tristimulus prism and little display screen laminating which characterized in that: the camera alignment mechanism comprises the camera alignment mechanism for attaching the cubic three-color light-combining prism to the micro display screen according to any one of claims 1 to 4;

the attaching mechanism (4) is used for acquiring the micro display screen (6) and moving the attaching end of the micro display screen (6) to a position corresponding to the attaching surface of the cubic three-color light-combining prism (7);

and the spacing control mechanism (5) is used for controlling the spacing between the attaching end of the micro display screen (6) and the attaching surface of the cubic three-color light-combining prism (7).

9. The system of claim 8, wherein the cube tristimulus prism is attached to the microdisplay: laminating mechanism (4) include three fixed laminating mechanism (4) that set up, three laminating mechanism (4) just arrange three binding face to cube tristimulus merger prism (7).

10. The system of claim 8, wherein the cube tristimulus prism is attached to the microdisplay: the attaching mechanism (4) comprises an attaching mechanism (4) which is fixedly arranged;

the three-color laminating mechanism further comprises a rotating mechanism, wherein the rotating mechanism is used for rotating the cubic three-color laminating prism (7) to enable three laminating surfaces of the cubic three-color laminating prism (7) to correspond to the laminating mechanism (4) in a time sharing mode;

the camera alignment mechanism is connected with the rotating mechanism, and the camera alignment mechanism is fixed relative to the position of the cube three-color light-combination prism (7).

11. The system of claim 8, wherein the cube tristimulus prism is attached to the microdisplay: laminating mechanism (4) are including laminating mechanism base (4.1), be provided with position control device (4.2) that are used for adjusting little display screen (6) position on laminating mechanism base (2), the free end of position control device (22) is provided with extracting device (4.3) that are used for acquireing little display screen (6).

12. The system of claim 11, wherein the cube tristimulus prism is attached to the microdisplay: the laminating mechanism base (4.1) comprises a multi-degree-of-freedom moving platform capable of moving in space, and the position adjusting device (4.2) comprises a six-axis precise alignment platform.

13. The system of claim 8, wherein the cube tristimulus prism is attached to the microdisplay: the distance control mechanism (5) comprises a distance parking monitoring camera (5.1) which is suspended above the cube three-color light-combining prism (7), and the distance parking monitoring camera (5.1) is used for detecting the distance between the binding face of the cube three-color light-combining prism (7) and the binding end of the micro display screen (6).

14. The system of claim 8, wherein the cube tristimulus prism is attached to the microdisplay: the device comprises a point screen pressing mechanism which is used for lightening the micro display screen (6).