Alignment jig and alignment method

Abstract

The invention discloses an alignment jig and an alignment method, the alignment jig is applied to three-color light combination fitting alignment of a display panel, the alignment jig comprises a substrate and a first light-emitting layer, the first light-emitting layer is arranged on one side of the substrate, the first light-emitting layer comprises at least one first light-emitting element, and the first light-emitting element is arranged on the substrate. Light emitted by the at least one first light-emitting element at least forms a first alignment pattern. In this way, the alignment efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to an alignment fixture and alignment method. Background Technology

[0002] In Micro-LED micro-display products, single-screen full-color display technology is currently a popular technology. In this technology, three monochrome screens are bonded to three sides of a cubic transparent light-combining prism to combine the light, and the light is superimposed through the light-combining prism to achieve color display. During the long-term research and development process, the applicant of this application discovered that the efficiency of screen movement for alignment during the current light-combining process is not high, and it is easy to damage the screen. Summary of the Invention

[0003] The main technical problem addressed by this application is to provide an alignment fixture and alignment method that can improve alignment efficiency.

[0004] To solve the above-mentioned technical problems, one technical solution adopted in this application is: to provide an alignment fixture, which is applied to the three-color light bonding and alignment of a display panel. The alignment fixture includes: a substrate; a first light-emitting layer disposed on one side of the substrate, the first light-emitting layer including at least one first light-emitting element, and the light emitted by the at least one first light-emitting element at least forms a first alignment pattern.

[0005] The first alignment pattern is located at the center of the alignment fixture; preferably, the first alignment pattern is a cross-shaped pattern.

[0006] The number of the first alignment patterns is multiple, wherein some of the first alignment patterns are arranged along the first diagonal direction of the substrate, and another part of the first alignment patterns are arranged along the second diagonal direction of the substrate; preferably, the first alignment pattern is a cross-shaped pattern, or the first alignment pattern is a straight line pattern.

[0007] The light emitted by the at least one first light-emitting element further forms a second alignment pattern, which is a grid pattern, wherein multiple first alignment patterns are distributed in the second alignment pattern.

[0008] The first light-emitting element includes a first semiconductor layer, a first active layer, and a second semiconductor layer sequentially stacked in a direction away from the substrate, wherein one of the first semiconductor layer and the second semiconductor layer is a P-type semiconductor layer and the other is an N-type semiconductor layer; and the first light-emitting element further includes a first electrode electrically connected to the first semiconductor layer and a second electrode electrically connected to the second semiconductor layer, wherein the first electrode is used to receive a first signal and the second electrode is used to receive a second signal; preferably, the first light-emitting element further includes a first insulating layer located on the side of the second semiconductor layer away from the substrate, wherein the first insulating layer has a first via exposing the first semiconductor layer and a second via exposing the second semiconductor layer, wherein the first electrode is at least partially filled in the first via and electrically connected to the first semiconductor layer, and the second electrode is at least partially filled in the second via and electrically connected to the second semiconductor layer; preferably, the material of the first electrode / second electrode includes indium tin oxide.

[0009] The alignment fixture further includes: a second light-emitting layer disposed on the side of the first light-emitting layer facing away from the substrate; the second light-emitting layer includes at least one second light-emitting element, wherein the light emission color of the first light-emitting element is different from the light emission color of the second light-emitting element; preferably, the orthographic projections of the first light-emitting element and the second light-emitting element on the substrate coincide; preferably, the first light-emitting element includes a first semiconductor layer, a first active layer, and a second semiconductor layer sequentially stacked in the direction facing away from the substrate, and the second light-emitting element includes a third semiconductor layer, a second active layer, and a fourth semiconductor layer sequentially stacked in the direction facing away from the substrate, wherein one of the first semiconductor layer and the second semiconductor layer... The first semiconductor layer is a P-type semiconductor layer, and the second semiconductor layer is an N-type semiconductor layer. The third semiconductor layer and the fourth semiconductor layer are either P-type or N-type. The first light-emitting element further includes a first electrode electrically connected to the first semiconductor layer and a second electrode electrically connected to the second semiconductor layer. The second light-emitting element further includes a third electrode electrically connected to the third semiconductor layer and a fourth electrode electrically connected to the fourth semiconductor layer. Preferably, the first semiconductor layer and the third semiconductor layer are both N-type semiconductor layers, and the second semiconductor layer and the fourth semiconductor layer are both P-type semiconductor layers. The first electrode is electrically connected to the third electrode, and the second electrode is electrically connected to the fourth electrode.

[0010] Wherein, all the light-emitting elements in the first light-emitting layer constitute a light-emitting unit, and the light emitted by the light-emitting unit forms the first alignment pattern; or, when some of the light-emitting elements in the first light-emitting layer emit light, they form the first alignment pattern.

[0011] The substrate is provided with a mounting structure for mounting the alignment fixture and the light-combining prism together; preferably, the mounting structure includes one of a clamp or a nesting structure.

[0012] Wherein, the substrate is an opaque substrate; preferably, the material of the substrate includes at least one of ceramic, polycarbonate, stainless steel, and glass.

[0013] To solve the above-mentioned technical problems, another technical solution adopted in this application is: providing an alignment method applied to the alignment fixture as described in any of the above claims, the method comprising: placing the alignment fixture on one side of the first light-incident surface of a beam combining prism, and aligning the center point of the alignment fixture with the center point of the beam combining prism; placing a first panel on one side of the second light-incident surface of the beam combining prism, and placing a second panel on one side of the third light-incident surface of the beam combining prism; adjusting the position of the first panel so that the alignment pattern displayed on the first panel coincides with the alignment pattern displayed on the alignment fixture after passing through the beam combining prism; adjusting the position of the second panel so that the alignment pattern displayed on the second panel coincides with the alignment pattern displayed on the alignment fixture after passing through the beam combining prism; removing the alignment fixture, and placing a third panel on one side of the first light-incident surface of the beam combining prism; adjusting the position of the third panel so that the alignment pattern displayed on the third panel coincides with the alignment pattern displayed on the first panel or the second panel after passing through the beam combining prism.

[0014] The beneficial effects of this application are as follows: This application sets the alignment fixture to display at least a first alignment pattern. Therefore, when aligning the first panel and the second panel, simply place the first panel, the second panel, and the alignment fixture on different light-incident surfaces of the light-combining prism. Then, adjust the position of the first panel until the alignment pattern displayed on the first panel and the alignment pattern displayed on the alignment fixture coincide after passing through the light-combining prism. Then, adjust the position of the second panel until the alignment pattern displayed on the second panel and the alignment pattern displayed on the alignment fixture coincide after passing through the light-combining prism. Finally, adjust the position of the third panel until the alignment pattern displayed on the third panel coincides with the alignment pattern displayed on the first panel or the second panel after passing through the light-combining prism. That is, the alignment of a single display panel with the light-combining prism is adjusted during the alignment process. Therefore, the solution of this application can improve the alignment efficiency, reduce the number of times the display panel is moved, and avoid damage to the display panel. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0016] Figure 1 This is a schematic diagram of the optical combining prism and the screen.

[0017] Figure 2 This is a structural schematic diagram of the beam combining prism, screen, and alignment fixture;

[0018] Figure 3 This is a schematic diagram of one embodiment of the alignment fixture of this application;

[0019] Figure 4 yes Figure 3 Top view;

[0020] Figure 5 This is a flowchart illustrating one embodiment of the alignment method of this application;

[0021] Figure 6 yes Figure 4 A schematic diagram of the structure of one embodiment of the first alignment pattern in the middle;

[0022] Figure 7 yes Figure 4 A schematic diagram of another embodiment of the first alignment pattern in the middle;

[0023] Figure 8 yes Figure 3 A schematic diagram of the cross-section of the middle luminescent layer;

[0024] Figure 9 This is a schematic diagram of another embodiment of the alignment fixture of this application;

[0025] Figure 10 yes Figure 9 A schematic diagram of the cross-section of the middle luminescent layer. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0027] Before introducing this application, let's first give a brief explanation of the optical combining prism:

[0028] A light-combining prism is a commonly used optical element in optical display devices. Its principle is to combine the images of three primary color monochromatic lights to form the final color pattern on the screen. Structurally, it is made by bonding prisms with different coatings together. For example, the red light reflector acts as a mirror for red light, reflecting it; for blue and green light, it acts like a pane of glass, allowing light to pass through. Similarly, the green light reflector acts as a mirror for green light, reflecting it; for blue and red light, it acts like a pane of glass, allowing light to pass through.

[0029] See Figure 1 In the current process, three monochrome screens 10 of red, green, and blue colors are bonded to the three light-incident surfaces of a light-combining prism 1 for light combining. During the light combining process, the three colored screens 10 emit light, which enters from the light-incident surfaces of the light-combining prism 1. The light is superimposed by the light-combining prism 1, thus displaying a color image on the light-out surface of the light-combining prism 1. Currently, in order to align the two screens 10 during the bonding process, both screens 10 are usually first driven and lit. Then, when the alignment mark images displayed on the two screens 10 overlap after passing through the light-combining prism 1, the two screens 10 are considered to be aligned. However, because the screens 10 need to achieve micron-level high-precision alignment, and the alignment moving mechanism requires two sets of structures to move the screens 10, and both screens 10 need to be moved simultaneously during the alignment process, the current solution not only results in high complexity and large size of the alignment moving mechanism, but also makes it easy for the alignment moving mechanism to damage the connecting lines of the screens 10 during the movement.

[0030] To address the above problems, this application proposes an alignment fixture 2, used for the three-color light bonding and alignment of a display panel or screen body. (See reference...) Figure 2 , Figure 3 and Figure 4 The alignment fixture 2 includes a substrate 21 and a first light-emitting layer 22. The first light-emitting layer 22 is disposed on one side of the substrate 21 and includes at least one first light-emitting element 220. The light emitted by the at least one first light-emitting element 220 forms at least a first alignment pattern 22a.

[0031] Specifically, the substrate 21 serves as a support in the alignment fixture 2. The first light-emitting layer 22 emits light, enabling the alignment fixture 2 to display the alignment pattern. The number of first light-emitting elements 220 can be one or more.

[0032] In this process, the light emitted by the first light-emitting element 220 in the first light-emitting layer 22 at least forms a first alignment pattern 22a. When using the alignment fixture 2, combined with... Figure 2 , Figure 5 and Figure 6 The alignment can be performed by following these steps:

[0033] S110: Place the alignment fixture 2 on one side of the first light-incident surface 11 of the light-combining prism 1, and make the center point of the alignment fixture 2 coincide with the center point of the light-combining prism 1.

[0034] S120: Place the first panel 3 on one side of the second light-incident surface 12 of the light-combining prism 1, and place the second panel 4 on one side of the third light-incident surface 13 of the light-combining prism 1.

[0035] Specifically, the first panel 3 is placed on the second light-incident surface 12 of the light-combining prism 1, and the second panel 4 is placed on the third light-incident surface 13, so that the light emitted by the first panel 3 can pass through the second light-incident surface 12, and the light emitted by the second panel 4 can pass through the third light-incident surface 13.

[0036] S130: Adjust the position of the first panel 3 so that the alignment pattern displayed on the first panel 3 coincides with the alignment pattern displayed on the alignment fixture 2 after passing through the light-combining prism 1.

[0037] Specifically, the alignment fixture 2 is first placed on one side of the first light-incident surface 11 of the light-combining prism 1, and the center point of the alignment fixture 2 is made to coincide with the center point of the light-combining prism 1. That is, the alignment fixture 2 and the light-combining prism 1 are aligned first. Then, the first panel 3 is placed on one side of the second light-incident surface 12 of the light-combining prism 1. If the alignment pattern displayed on the first panel 3 does not coincide with the alignment pattern displayed on the alignment fixture 2 (that is, the first alignment pattern 22a mentioned above) after passing through the light-combining prism 1, it means that the position of the first panel 3 is not accurate. Therefore, the position of the first panel 3 needs to be adjusted until the alignment pattern displayed on the first panel 3 coincides with the alignment pattern displayed on the alignment fixture 2 after passing through the light-combining prism 1.

[0038] The first alignment pattern 22a can be formed by light emitted from a single first light-emitting element 220, or the second alignment pattern 22b can be formed by light emitted from multiple first light-emitting elements 220. This application does not impose any restrictions.

[0039] S140: Adjust the position of the second panel 4 so that the alignment pattern displayed on the second panel 4 coincides with the alignment pattern displayed on the alignment fixture 2 after passing through the light-combining prism 1.

[0040] Specifically, the second panel 4 is placed on one side of the third light-incident surface 13. The alignment pattern displayed on the second panel 4 does not coincide with the alignment pattern displayed on the alignment fixture 2. The position of the second panel 4 needs to be adjusted so that the alignment pattern displayed on the second panel 4 coincides with the alignment pattern displayed on the alignment fixture 2 after passing through the light-combining prism 1.

[0041] S150: Take out the alignment fixture 2 and place the third panel on one side of the first light-incident surface 11 of the light-combining prism 1.

[0042] Specifically, after the first panel 3 and the second panel 4 are aligned with the light-combining prism 1, the alignment fixture 2 is taken out, and the third panel is placed on one side of the first light-incident surface 11 of the light-combining prism 1, so that the light emitted by the third panel can pass through the first light-incident surface 11.

[0043] S160: Adjust the position of the third panel so that the alignment pattern displayed on the third panel coincides with the alignment pattern displayed on the first panel 3 or the second panel 4 after passing through the light-combining prism.

[0044] Specifically, if the alignment pattern displayed on the third panel does not overlap with the alignment pattern displayed on the first panel 3 or the second panel 4, the position of the third panel is adjusted so that the alignment pattern displayed on the third panel overlaps with the alignment pattern displayed on the first panel 3 or the second panel 4 after passing through the beam combining prism, thus completing the alignment of the first panel, the second panel, and the third panel with the beam combining prism.

[0045] As can be seen from the above, this application sets the alignment fixture 2 to display at least the first alignment pattern 22a. Therefore, when aligning the first panel 3, as long as the first panel 3 and the alignment fixture 2 are placed on different light-incident surfaces of the light-combining prism 1, the position of the first panel 3 is adjusted until the alignment pattern displayed on the first panel 3 coincides with the alignment pattern displayed on the alignment fixture 2 after passing through the light-combining prism 1. Then, the position of the second panel 4 is adjusted until the alignment pattern displayed on the second panel 4 coincides with the alignment pattern displayed on the alignment fixture 2 after passing through the light-combining prism 1. Finally, the position of the third panel is adjusted until the alignment pattern displayed on the third panel coincides with the alignment pattern displayed on the first panel 3 or the second panel 4 after passing through the light-combining prism 1. That is, during the alignment process, each individual display panel is moved and the alignment of the individual display panel with the light-combining prism 1 is adjusted. Therefore, the solution of this application can improve the alignment efficiency, reduce the number of times the display panels are moved, and avoid damage to the display panels.

[0046] In one embodiment, see Figure 4 The first alignment pattern 22a is located at the center of the alignment fixture 2. Thus, the first alignment pattern 22a can not only align the first panel 3, but also ensure the alignment between the alignment fixture 2 and the light-combining prism 1. Specifically, in the above step S110, after the alignment fixture 2 is placed on the side of the first light-incident surface 11 of the light-combining prism 1, if the first alignment pattern 22a is not located at the center of the light-combining prism 1 after passing through the light-combining prism 1, it means that the alignment fixture 2 and the light-combining prism 1 are not aligned. Therefore, the position of the alignment fixture 2 can be adjusted until the first alignment pattern 22a is located at the center of the light-combining prism 1 after passing through the light-combining prism 1.

[0047] In other embodiments, the first alignment pattern 22a may also be offset from the center of the alignment fixture 2.

[0048] In one embodiment, see further. Figure 4 The first alignment pattern 22a is a cross-shaped pattern. The center point of the cross-shaped pattern is easy to observe. The position of the first panel 3 can be adjusted according to the offset of the cross-shaped pattern, which can simplify the process of adjusting the first panel 3. Of course, in other embodiments, the first alignment pattern 22a can also be a circular pattern, a triangular pattern or a straight pattern.

[0049] See Figure 6 and Figure 7 In one embodiment, there are multiple first alignment patterns 22a, wherein a portion of the first alignment patterns 22a are arranged along the first diagonal direction X1 of the substrate 21, and another portion of the first alignment patterns 22a are arranged along the second diagonal direction X2 of the substrate 21.

[0050] Specifically, in practical applications, when the first panel 3 and the light-combining prism 1 are bonded together, the presence of adhesive may cause the first panel 3 to shift or deform. The above-mentioned multiple first alignment patterns 22a can help to align the four corners of the light-combining prism 1 and the first panel 3, effectively solving the above problems and thus achieving precise alignment.

[0051] In one embodiment, see Figure 6 The first alignment pattern 22a is a cross-shaped pattern, which is specifically set as a cross-shaped pattern to facilitate the precise alignment of the first panel 3 and the light-combining prism 1.

[0052] In another embodiment, see Figure 7 The first alignment pattern 22a is a straight line pattern. In summary, this application does not limit the specific shape of the first alignment pattern 22a.

[0053] Furthermore, in one embodiment, when the first alignment pattern 22a is a line-shaped pattern, such as Figure 7 As shown, the linear pattern is also marked with scales, so that the position of the first panel 3 can be accurately adjusted according to the scales during the alignment process, further improving the alignment efficiency.

[0054] In one embodiment, see further. Figure 6 and Figure 7 The light emitted by at least one first light-emitting element 220 further forms a second alignment pattern 22b, which is a grid pattern, wherein multiple first alignment patterns 22a are distributed in the second alignment pattern 22b.

[0055] Specifically, the second alignment pattern 22b is a grid pattern, and the first alignment pattern 22a is set in the grid pattern, specifically in the mesh of the grid pattern. Setting the first alignment pattern 22a and the second alignment pattern 22b allows for more accurate alignment of the first panel 3 and also avoids pattern misalignment caused by the flow of the adhesive.

[0056] Of course, in other embodiments, the second alignment pattern 22b may not be provided.

[0057] In one embodiment, see Figure 8 The first light-emitting element 220 includes a first semiconductor layer 221, a first active layer 222, and a second semiconductor layer 223 sequentially stacked in the direction away from the substrate 21. One of the first semiconductor layer 221 and the second semiconductor layer 223 is a P-type semiconductor layer and the other is an N-type semiconductor layer. The first light-emitting element 220 further includes a first electrode 224 electrically connected to the first semiconductor layer 221 and a second electrode 225 electrically connected to the second semiconductor layer 223. The first electrode 224 is used to receive a first signal, and the second electrode 225 is used to receive a second signal.

[0058] Specifically, when the first electrode 224 is the anode, the first signal is a positive voltage signal and the second signal is a negative voltage signal; when the first electrode 224 is the cathode, the first signal is a negative voltage signal and the second signal is a positive voltage signal. When a voltage is applied to the first electrode 224 and the second electrode 225, the first light-emitting element 220 emits light; when no voltage is applied to the first electrode 224 and the second electrode 225, the first light-emitting element 220 does not emit light.

[0059] Furthermore, the first light-emitting element 220 further includes a first insulating layer 226, which is located on the side of the second semiconductor layer 223 away from the substrate 21. The first insulating layer 226 has a first via 227 exposing the first semiconductor layer 221 and a second via 228 exposing the second semiconductor layer 223. The first electrode 224 is at least partially filled in the first via 227 and electrically connected to the first semiconductor layer 221, and the second electrode 225 is at least partially filled in the second via 228 and electrically connected to the second semiconductor layer 223.

[0060] Specifically, a first insulating layer 226 is provided to cover the second semiconductor layer 223, and a hole is formed in the first insulating layer 226. A first electrode 224 is filled in the first via 227, and a second electrode 225 is filled in the second via 228. The first electrode 224 is electrically connected to the first semiconductor layer 221, and the second electrode 225 is electrically connected to the second semiconductor layer 223. The provision of the first insulating layer 226 can prevent moisture from entering the underlying film layer, thereby improving the durability and lifespan of the first light-emitting element 220.

[0061] In one embodiment, the material of the first electrode 224 includes indium tin oxide, and the material of the second electrode 225 includes indium tin oxide. Using the same material to prepare the first electrode 224 and the second electrode 225 can improve the preparation efficiency and reduce the cost. Of course, in other embodiments, the materials of the first electrode 224 and the second electrode 225 can also be different. In short, as long as the first electrode 224 and the second electrode 225 can conduct electricity, it is acceptable.

[0062] See Figure 9 In one embodiment, the alignment fixture 2 further includes a second light-emitting layer 23. The second light-emitting layer 23 is disposed on the side of the first light-emitting layer 22 away from the substrate 21, and the second light-emitting layer 23 includes at least one second light-emitting element 230, wherein the light emission color of the first light-emitting element 220 is different from the light emission color of the second light-emitting element 230.

[0063] Specifically, the second light-emitting layer 23 and the first light-emitting layer 22 are set to different colors, so that the alignment jig 2 can be used to align the first panel 3 of different colors. For example, when the light-emitting color of the first light-emitting layer 22 is red and the light-emitting color of the second light-emitting layer 23 is blue, when the alignment jig 2 is needed to align the first panel 3 with a red light-emitting color, the first light-emitting layer 22 can be controlled to emit light while the second light-emitting layer 23 does not emit light; when the alignment jig 2 is needed to align the first panel 3 with a blue light-emitting color, the first light-emitting layer 22 can be controlled to not emit light while the second light-emitting layer 23 emits light; when the alignment jig 2 is needed to align the first panel 3 with a green light-emitting color, one of the first light-emitting layer 22 and the second light-emitting layer 23 can be controlled to emit light while the other does not emit light.

[0064] In one embodiment, see Figure 9 The orthographic projections of the first light-emitting element 220 and the second light-emitting element 230 on the substrate 21 coincide. Of course, in other embodiments, the orthographic projections of the first light-emitting element 220 and the second light-emitting element 230 on the substrate 21 may not coincide, or may only partially coincide.

[0065] See Figure 10The first light-emitting element 220 includes a first semiconductor layer 221, a first active layer 222, and a second semiconductor layer 223 sequentially stacked in the direction away from the substrate 21. The second light-emitting element 230 includes a third semiconductor layer 231, a second active layer 232, and a fourth semiconductor layer 233 sequentially stacked in the direction away from the substrate 21. One of the first semiconductor layer 221 and the second semiconductor layer 223 is a P-type semiconductor layer and the other is an N-type semiconductor layer. One of the third semiconductor layer 231 and the fourth semiconductor layer 233 is a P-type semiconductor layer and the other is an N-type semiconductor layer. The first light-emitting element 220 further includes a first electrode 224 electrically connected to the first semiconductor layer 221 and a second electrode 225 electrically connected to the second semiconductor layer 223. The second light-emitting element 230 further includes a third electrode 234 electrically connected to the third semiconductor layer 231 and a fourth electrode 235 electrically connected to the fourth semiconductor layer 233. Specifically, when a voltage is applied to the first electrode 224 and the second electrode 225, the first light-emitting element 220 emits light; when a voltage is applied to the third electrode 234 and the fourth electrode 235, the second light-emitting element 230 emits light. It is understood that the first light-emitting element 220 and the second light-emitting element 230 can be controlled to emit light simultaneously, or they can be controlled to emit light at different times. The choice can be made according to actual needs and is not limited here.

[0066] In one embodiment, the first semiconductor layer 221 and the third semiconductor layer 231 are both N-type semiconductor layers, the second semiconductor layer 223 and the fourth semiconductor layer 233 are both P-type semiconductor layers, the first electrode 224 is electrically connected to the third electrode 234, and the second electrode 225 is electrically connected to the fourth electrode 235.

[0067] In one embodiment, all light-emitting elements in the first light-emitting layer 22 constitute a light-emitting unit, and the light emitted by the light-emitting unit forms a first alignment pattern 22a. Specifically, in this embodiment, when the alignment fixture 2 needs to display the first alignment pattern 22a, it is necessary to control all light-emitting elements in the first light-emitting layer 22 to emit light.

[0068] In another embodiment, a portion of the light-emitting elements in the first light-emitting layer 22 emit light to form a first alignment pattern 22a. Unlike the embodiments described above, only a portion of the light-emitting elements in the first light-emitting layer 22 need to emit light to display the first alignment pattern 22a. Therefore, in this embodiment, different alignment patterns can be displayed by controlling different numbers of the first light-emitting elements 220 to emit light, thus meeting more usage requirements.

[0069] In one embodiment, all the light-emitting elements in the second light-emitting layer 23 constitute a light-emitting unit, and the light emitted by the light-emitting unit forms a first alignment pattern 22a. Specifically, in this embodiment, when the alignment fixture 2 needs to display the first alignment pattern 22a, it is necessary to control all the light-emitting elements in the second light-emitting layer 23 to emit light.

[0070] In another embodiment, when some of the light-emitting elements in the second light-emitting layer 23 emit light, a first alignment pattern 22a is formed. Unlike the embodiment described above, only some of the light-emitting elements in the second light-emitting layer 23 need to emit light to display the first alignment pattern 22a. Therefore, in this embodiment, different alignment patterns can be displayed by controlling different numbers of the first light-emitting elements 220 to emit light, thus meeting more usage requirements.

[0071] In one embodiment, the substrate 21 is provided with a mounting structure for mounting the alignment fixture 2 and the beam-combining prism 1 together. Specifically, the beam-combining prism 1 is mounted on the alignment fixture 2, and the mounting structure fixes the beam-combining prism 1 to the substrate 21. In this case, in the above step S110, as long as the substrate 21 and the beam-combining prism 1 are mounted together, the center point of the alignment fixture 2 and the center point of the prism 1 can be ensured to coincide, so that there is no need to adjust the relative position of the two, which can improve the alignment efficiency.

[0072] Furthermore, the mounting structure includes either a clamp or a nesting structure. Specifically, in one application scenario, the clamp is fixed to the substrate 21, and the light-combining prism 1 can be fixed inside the clamp. In another application scenario, the nesting structure is mounted on the substrate 21, and the light-combining prism 1 is fixed within the nesting structure. In summary, this application does not impose specific limitations on the mounting structure, as long as the mounting structure can achieve the mounting of the alignment fixture 2 and the light-combining prism 1.

[0073] In one embodiment, the substrate 21 is an opaque substrate 21. Specifically, the opacity of the substrate 21 can reduce the light loss of the first light-emitting layer 22 and improve the light transmittance of the first light-emitting layer 22 to the light-combining prism 1.

[0074] In one embodiment, the substrate 21 is made of at least one of ceramic, polycarbonate, stainless steel, and glass to enhance the support strength of the substrate 21. The substrate 21 may be made of ceramic alone, or a mixture of ceramic and glass.

[0075] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A positioning fixture, characterized in that, The alignment fixture is used for the three-color light bonding and alignment of the display panel. The alignment fixture includes: substrate; A first light-emitting layer is disposed on one side of the substrate. The first light-emitting layer includes at least one first light-emitting element, and the light emitted by the at least one first light-emitting element forms at least a first alignment pattern.

2. The alignment fixture according to claim 1, characterized in that, The first alignment pattern is located at the center of the alignment fixture; Preferably, the first alignment pattern is a cross-shaped pattern.

3. The alignment fixture according to claim 1, characterized in that, The number of the first alignment patterns is multiple, wherein a portion of the first alignment patterns are arranged along the first diagonal direction of the substrate, and another portion of the first alignment patterns are arranged along the second diagonal direction of the substrate; Preferably, the first alignment pattern is a cross-shaped pattern, or the first alignment pattern is a straight line pattern.

4. The alignment fixture according to claim 3, characterized in that, The light emitted by the at least one first light-emitting element further forms a second alignment pattern, which is a grid pattern, wherein a plurality of the first alignment patterns are distributed in the second alignment pattern.

5. The alignment fixture according to claim 1, characterized in that, The first light-emitting element includes a first semiconductor layer, a first active layer, and a second semiconductor layer sequentially stacked in a direction away from the substrate, wherein one of the first semiconductor layer and the second semiconductor layer is a P-type semiconductor layer and the other is an N-type semiconductor layer; Furthermore, the first light-emitting element further includes a first electrode electrically connected to the first semiconductor layer and a second electrode electrically connected to the second semiconductor layer, wherein the first electrode is used to receive a first signal and the second electrode is used to receive a second signal; Preferably, the first light-emitting element further includes a first insulating layer, the first insulating layer being located on the side of the second semiconductor layer away from the substrate, the first insulating layer having a first via exposing the first semiconductor layer and a second via exposing the second semiconductor layer, the first electrode being at least partially filled in the first via and electrically connected to the first semiconductor layer, and the second electrode being at least partially filled in the second via and electrically connected to the second semiconductor layer. Preferably, the material of the first electrode / second electrode includes indium tin oxide.

6. The alignment fixture according to claim 1, characterized in that, The alignment fixture further includes: A second light-emitting layer is disposed on the side of the first light-emitting layer away from the substrate. The second light-emitting layer includes at least one second light-emitting element, wherein the light-emitting color of the first light-emitting element is different from the light-emitting color of the second light-emitting element. Preferably, the orthographic projections of the first light-emitting element and the second light-emitting element on the substrate coincide; Preferably, the first light-emitting element includes a first semiconductor layer, a first active layer, and a second semiconductor layer sequentially stacked in the direction away from the substrate; the second light-emitting element includes a third semiconductor layer, a second active layer, and a fourth semiconductor layer sequentially stacked in the direction away from the substrate; one of the first semiconductor layer and the second semiconductor layer is a P-type semiconductor layer and the other is an N-type semiconductor layer; one of the third semiconductor layer and the fourth semiconductor layer is a P-type semiconductor layer and the other is an N-type semiconductor layer; and the first light-emitting element further includes a first electrode electrically connected to the first semiconductor layer and a second electrode electrically connected to the second semiconductor layer; the second light-emitting element further includes a third electrode electrically connected to the third semiconductor layer and a fourth electrode electrically connected to the fourth semiconductor layer. Preferably, the first semiconductor layer and the third semiconductor layer are both N-type semiconductor layers, and the second semiconductor layer and the fourth semiconductor layer are both P-type semiconductor layers. The first electrode is electrically connected to the third electrode, and the second electrode is electrically connected to the fourth electrode.

7. The alignment fixture according to claim 1, characterized in that, All the light-emitting elements in the first light-emitting layer constitute a light-emitting unit, and the light emitted by the light-emitting unit forms the first alignment pattern; or, some of the light-emitting elements in the first light-emitting layer form the first alignment pattern when they emit light.

8. The alignment fixture according to claim 1, characterized in that, The substrate is provided with a mounting structure, which is used to mount the alignment fixture and the light-combining prism together. Preferably, the mounting structure includes either a clamp or a nesting structure.

9. The alignment fixture according to claim 1, characterized in that, The substrate is an opaque substrate; Preferably, the substrate is made of at least one of ceramic, polycarbonate, stainless steel, and glass.

10. A method for alignment, characterized in that, Applied to the alignment fixture as described in any one of claims 1 to 9, the method comprises: The alignment fixture is placed on one side of the first light-incident surface of the beam combining prism, and the center point of the alignment fixture coincides with the center point of the beam combining prism. The first panel is placed on the second light-incident surface side of the light-combining prism, and the second panel is placed on the third light-incident surface side of the light-combining prism. Adjust the position of the first panel so that the alignment pattern displayed on the first panel coincides with the alignment pattern displayed on the alignment fixture after passing through the light-combining prism; Adjust the position of the second panel so that the alignment pattern displayed on the second panel coincides with the alignment pattern displayed on the alignment fixture after passing through the light-combining prism; Remove the alignment fixture and place the third panel on the first light-incident surface side of the light-combining prism; Adjust the position of the third panel so that the alignment pattern displayed on the third panel coincides with the alignment pattern displayed on the first panel or the second panel after passing through the light-combining prism.

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