Preparation method of display module and display module prepared by method

Abstract

The invention discloses a preparation method of a display module and the display module prepared by the method, and the method comprises the following steps: obtaining a substrate, and arranging a plurality of groups of supporting Chip type LED elements on a first surface of the substrate in a matrix manner; a staggered channel jointly formed by the multiple sets of LED elements is filled with colloid, the colloid is solidified to form a shading part flush with the top light-emitting face of any LED element, and the side light-emitting face of any LED element is completely shielded; a polaroid is formed on any top light-emitting surface; the light shielding part is formed by injecting the colloid, so that the influence of interference light formed by the side light emitting part of the LED element on the later imaging quality can be effectively prevented, and the polaroid enables a user to respectively receive corresponding images from the left eye and the right eye so as to form a corresponding three-dimensional effect in the brain; under the action of the process, the limitation of the LED element structure is effectively broken through, and the applicability is higher.

Description

Technical Field

[0001] This invention relates to the field of display modules, and more particularly to a method for manufacturing a display module and a display module manufactured using this method. Background Technology

[0002] Display screens are the primary display terminals for humans to obtain information. Especially with the development of human-computer interaction and big data technologies, human information acquisition is no longer simply through information display terminals, but requires precise and immersive interactive terminals to achieve personalized information delivery and interaction. Polarized 3D systems have the highest market share and are currently the most widely accepted and comfortable 3D display method. The combination of polarized 3D technology and high-density integrated LEDs offers various technical advantages such as comfort, portability, wide viewing angles, and high resolution, making it highly favored by the market. However, in the existing technology, the display capability of a display screen is inseparable from the fabrication of a display module. In the fabrication process of a display module, the selection of LED components is quite stringent. However, the commonly available Chip-type LED components are difficult to process into display modules. A major reason for this is that the light path cannot be arranged as expected due to the multiple light-emitting surfaces. Therefore, a more reasonable solution is urgently needed to fabricate display modules from Chip-type LED components. Summary of the Invention

[0003] To address the technical challenge of stringent LED component selection in the existing display module manufacturing process, this invention provides a solution.

[0004] To achieve the above objectives, the present invention provides a method for manufacturing a display module, comprising the following steps: A substrate is obtained, and multiple sets of Chip-type LED elements are arranged in a matrix on the first surface of the substrate. A colloid is injected into the staggered channel formed by multiple sets of LED elements. After solidification, the colloid forms a light-shielding portion that is at least flush with the top light-emitting surface of any LED element and completely blocks the side light-emitting surface of any LED element. A polarizer is formed on any of the top light-emitting surfaces, thus obtaining a display module; When any of the LED elements is working, the main light path formed by the LED element is emitted from the top light-emitting surface and deflected to the desired direction by the corresponding polarizer.

[0005] As an improvement of this application, after forming the polarizer, the method further includes: forming a transparent layer on the light-shielding portion and the surface of the polarizer.

[0006] As an improvement of this application, the light shield is flush with the emitted light surface of the polarizer.

[0007] As an improvement of this application, the polarizer includes a first specification sheet and a second specification sheet, which are arranged in a cyclic manner on the LED element described in the same row.

[0008] As an improvement to this application, the first and second specification sheets are arranged in a circular manner on the LED elements in the same row.

[0009] As an improvement of this application, adjacent first and second specification sheets form a first emitted light and a second emitted light, the first emitted light and the second emitted light are distributed in a mirror image on the emitted light normal, the emitted light normal is located between the corresponding first and second specification sheets.

[0010] As an improvement to this application, any of the LED elements described herein is composed of red light units, green light units, and blue light units.

[0011] As an improvement to this application, if the LED unit is an exposed RGB unit, the following steps are adjusted: A substrate is obtained, and multiple sets of RGB units are arranged in a matrix on the first surface of the substrate. A colloid is injected into the staggered channel formed by multiple sets of RGB units. After solidification, the colloid forms a first light-shielding part that is flush with the top light-emitting surface of any RGB unit and completely blocks the side light-emitting surface of any RGB unit. A first transparent layer is formed on the surfaces of the light-shielding portion and the top light-emitting surface; Multiple sets of polarizers are formed in the first transparent layer at the positions corresponding to the RGB units; A second transparent layer is formed on the surface of the first transparent layer to cover the polarizer. When any of the RGB units is working, the main light path formed by the RGB unit is emitted from the top light-emitting surface and deflected to the expected direction by the corresponding polarizer.

[0012] As an improvement to this application, before forming the second transparent layer, the method further includes: A colloid is injected at the location of any of the polarizers, and after the colloid solidifies, a second light-shielding portion is formed flush with the light-emitting surface of any of the polarizers. The first transparent layer and the second transparent layer together cover the polarizer and the second light-shielding part.

[0013] This application also provides a display module prepared by any of the foregoing methods.

[0014] The beneficial effects of this invention are as follows: Compared with the prior art, this invention provides a method for preparing a display module and a display module prepared by the method. The method includes the following steps: obtaining a substrate; arranging multiple sets of supporting chip-type LED elements in a matrix arrangement on the first surface of the substrate; injecting a colloid into the staggered channel formed by the multiple sets of LED elements; after the colloid solidifies, forming a light-shielding part that is at least flush with the top light-emitting surface of any LED element and completely shielding the side light-emitting surface of any LED element; forming a polarizer on any top light-emitting surface; when any LED element is working, the main light path formed by the LED element is emitted from the top light-emitting surface and deflected to the expected direction by the corresponding polarizer; by injecting the colloid to form a light-shielding part, it is possible to effectively prevent the side light-emitting part of the LED element from forming interference light that affects the subsequent imaging quality, while the arrangement of the polarizer can deflect the emitted light of the LED element, so that the user receives the corresponding image from the left eye and the right eye respectively, so as to form the corresponding stereoscopic effect in the mind; under the action of the above process, the limitations of LED element structure are effectively broken, and the applicability is higher. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the display module of the present invention; Figure 2 This is a schematic diagram of a display module according to another embodiment of the present invention; Figure 3 This is a schematic diagram of a display module according to another embodiment of the present invention; Figure 4 This is a schematic diagram of the arrangement of the polarizer in this invention; Figure 5 This is a process flow diagram of the present invention; Figure 6 This is a process flow diagram of another embodiment of the present invention; The symbols for the main components are explained below: 1. Substrate; 2. LED component; 3. Light-shielding part; 4. Transparent layer; 41. First part; 42. Part Two; 5. Polarizing Film; 51. First Specification Film; 52. Second Specification Film; a1, First transparent layer; a2, Second transparent layer; b, RGB unit; c1, First light-blocking part; c2, Second shading section. Detailed Implementation

[0016] To more clearly illustrate the present invention, the invention will be further described below with reference to the accompanying drawings.

[0017] In the following description, specific examples are given to provide a more in-depth understanding of the invention. It is obvious that the described embodiments are merely some, not all, of the embodiments of the invention. It should be understood that the specific embodiments described are for illustrative purposes only and are not intended to limit the scope of the invention.

[0018] It should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the said feature, integral, step, operation, element, or component, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, or combinations thereof.

[0019] To address the aforementioned technical problems, this application provides a method for manufacturing a display module. Please refer to the appendix. Figure 1 , Figure 2 , Figure 4 and Figure 5 This includes the following steps: Obtain a substrate 1, and arrange multiple sets of chip-type LED elements 2 in a matrix arrangement on the first surface of the substrate 1; A colloid is injected into the staggered channel formed by multiple LED elements 2. After the colloid solidifies, it forms a light-shielding part 3 that is at least flush with the top light-emitting surface of any LED element 2 and completely blocks the side light-emitting surface of any LED element 2. A polarizer 5 is formed on any of the top light-emitting surfaces; When any LED element 2 is working, the main light path formed by the LED element 2 is emitted from the top light-emitting surface and is deflected to the expected direction by the corresponding polarizer 5; By injecting colloid to form a light-shielding part, it is possible to effectively prevent interference light from the side light-emitting part of LED element 2 from affecting the subsequent imaging quality. The arrangement of polarizer 5 can deflect the emitted light of LED element 2, so that the user receives the corresponding images from the left and right eyes respectively, so as to form the corresponding stereoscopic effect in the mind. Under the above process, the structural limitations of LED element 2 are effectively broken through, and the applicability is higher.

[0020] In this embodiment, after the polarizer 5 is formed, a transparent layer 4 is formed on the surface of the light-shielding part 3 and the polarizer 5. The transparent layer 4 can effectively protect the light-shielding part 3 and the polarizer, and prevent scratches and wear during subsequent equipment and use.

[0021] In the optimized implementation, the light shield 3 is flush with the light-emitting surface of the polarizer 5, which prevents the polarizer from exposing light from the side, reduces stray light interference, and improves display quality.

[0022] In terms of specific materials, the colloid forming the light-shielding part is mainly made of industrial epoxy resin, polyurethane, and silicone resin; while the main material of the transparent layer 4 is a polymer substrate, such as acrylate and polyurethane. The above materials have the characteristics of transparency, temperature resistance, and wear resistance to fit the process of this application.

[0023] In this embodiment, the polarizer 5 includes a first specification sheet 51 and a second specification sheet 52, which are arranged in a circular manner on the LED element 2 in the same row. The two adjacent LED elements 2 deflect the emitted light in the expected direction by the first specification sheet 51 and the second specification sheet 52 mounted on them, so that the polarization of the output image presents different states. When used with polarized glasses, the polarized glasses can perceive a stereoscopic effect after secondary filtering.

[0024] In a preferred embodiment, the first-size sheet 51 and the second-size sheet 52 are arranged in a circular manner on the LED element 2 in the same column; this arrangement makes the 3D stereoscopic effect stronger and enriches the user experience.

[0025] Regarding the optical path, adjacent first standard sheet 51 and second standard sheet 52 form a first emitted light and a second emitted light. The first emitted light and the second emitted light are distributed in a mirror image on the emitted light normal, which is located between the corresponding first standard sheet 51 and second standard sheet 52. In this case, the first standard sheet 51 and the second standard sheet 52 form corresponding emitted light normals in both the longitudinal and transverse directions, resulting in better display effects in the later stages.

[0026] In this embodiment, each LED element 2 is composed of a red light unit, a green light unit, and a blue light unit; by adjusting the above three three-color light sources, the desired display image can be obtained.

[0027] In the above scheme, the LED element 2 is packaged on the substrate 1 using one of the packaging modes of MIP or SMD; the packaging strategy can be selected according to the needs of the later products and the customer's intentions; and for the COB packaging mode, this application also provides a corresponding preparation method for selecting the light-emitting element, specifically: This application also provides a method for manufacturing a display module; please refer to the appendix. Figure 3 and attached Figure 6 If the LED unit is an exposed RGB unit, then the following steps are performed: Obtain substrate 1, and arrange multiple sets of RGB units b in a matrix arrangement on the first surface of substrate 1; A colloid is poured into the staggered channels formed by multiple RGB units b. After solidification, the colloid forms a first light-shielding part c1 that is flush with the top light-emitting surface of any RGB unit b and completely blocks the side light-emitting surface of any RGB unit. The staggered channels are defined as those within the RGB units and between any adjacent RGB units. The colloid, in a flowing state, seeps into the staggered channels and solidifies to form the first light-shielding part c1. A first transparent layer a1 is formed on the surface of the light-shielding part and the top light-emitting surface; the first transparent layer a1 serves to initially protect the RGB unit b and the second light-shielding part c1, making the operation of the RGB unit b more stable; Multiple sets of polarizers are formed at the positions corresponding to the RGB units in the first transparent layer; the function of the polarizers is the same as that in the previous embodiment, and the layout method in the previous embodiment can continue to be used; A second transparent layer a2 is formed on the surface of the first transparent layer a1 to cover the polarizer. The second transparent layer a2 works in conjunction with the first transparent layer a1. Both the first transparent layer a1 and the second transparent layer a2 can be understood as layered structures that play a protective role, thus achieving a better protective effect. Specifically, the first transparent layer a2 can effectively protect the top light-emitting surface of the RGB unit b and the first light-shielding part c1. The second transparent layer a2 works in conjunction with the first transparent layer a1 to cover the polarizer 5, thereby more firmly protecting the polarizer 5 and enhancing the performance of the subsequent finished product.

[0028] When any RGB unit is working, the main light path formed by the RGB unit is emitted from the top light-emitting surface and deflected to the expected direction by the corresponding polarizer.

[0029] The above-mentioned solutions are well-suited for COB packaging to produce display modules with high display quality.

[0030] In this embodiment, before forming the second transparent layer, the method further includes: A colloid is injected into any polarizer 5, and after the colloid solidifies, a second light-shielding part c2 is formed flush with the light-emitting surface of any polarizer. A first transparent layer a1 and a second transparent layer together cover the polarizer and the second light-shielding part. It is easy to understand that the addition of the second light-shielding part can prevent the polarizer from exposing light from the side, reduce the interference of stray light, and make the display quality better.

[0031] This application also provides a display module prepared by the above method. The display module presents the structural form of the above embodiments and therefore has the same positive effects as the aforementioned embodiments, which will not be elaborated here.

[0032] The advantages of this invention are: By injecting colloid to form a light-shielding part, it is possible to effectively prevent interference light from the side light-emitting part of the LED element from affecting the subsequent imaging quality. The arrangement of the polarizer can deflect the emitted light of the LED element, so that the user receives the corresponding image from the left and right eyes respectively, so as to form the corresponding stereoscopic effect in the mind. Under the above process, the structural limitations of LED elements are effectively broken through, and the applicability is higher.

[0033] The above-disclosed embodiments are merely a few specific examples of the present invention, but the present invention is not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A method for manufacturing a display module, characterized by, The method comprises the following steps: obtaining a substrate, a plurality of Chip-type LED elements are arranged in a matrix on a first surface of the substrate; filling a colloid into interlaced channels formed by the plurality of LED elements, the colloid forms a light-shielding part after solidification, the light-shielding part is flush with a top light-emitting surface of any LED element and completely shields a side light-emitting surface of any LED element; forming a polarizer on any top light-emitting surface to obtain a display module; when any LED element works, a main light path formed by the LED element is emitted from the top light-emitting surface and deflected to a desired direction through the corresponding polarizer.

2. The method of claim 1, wherein the display module is prepared by the steps of: After the polarizer is formed, a transparent layer is further formed on the surface of the light-shielding part and the polarizer. ​ 3. The method of claim 2, wherein the display module is prepared by the steps of: The light-shielding part is flush with an exit light surface of the polarizer. ​ 4. The method of claim 1, wherein the display module is prepared by the steps of: The polarizer comprises a first specification sheet and a second specification sheet, the first specification sheet and the second specification sheet are arranged in a cycle on the same row of LED elements. ​ 5. The method of claim 4, wherein the display module is prepared by the steps of: The first specification sheet and the second specification sheet are arranged in a cycle on the same column of LED elements. ​ 6. The method of claim 4, wherein the display module is prepared by the steps of: The first specification sheet and the second specification sheet are adjacent to each other to form a first exit light and a second exit light, the first exit light and the second exit light are mirror-distributed on an exit light normal line between the corresponding first specification sheet and second specification sheet. ​ 7. The method for manufacturing a display module according to claim 1, characterized in that, Any LED element is composed of a red unit, a green unit and a blue unit.

8. The method for manufacturing a display module according to claim 1, characterized in that, If the LED unit is a bare RGB unit, the following steps are adjusted: obtaining a substrate, a plurality of RGB units are arranged in a matrix on a first surface of the substrate; filling a colloid into interlaced channels formed by the plurality of RGB units, the colloid forms a first light-shielding part flush with a top light-emitting surface of any RGB unit after solidification and completely shields a side light-emitting surface of any RGB unit; forming a first transparent layer on the surface of the light-shielding part and the top light-emitting surface; forming a plurality of polarizers on the first transparent layer corresponding to the positions of the RGB units; forming a second transparent layer on the surface of the first transparent layer to surface-coat the polarizers to obtain the display module; when any RGB unit works, a main light path formed by the RGB unit is emitted from the top light-emitting surface and deflected to a desired direction through the corresponding polarizer.

9. A method for manufacturing a display module according to claim 1, characterized in that, Before the second transparent layer is formed, the following steps are further included: filling a colloid at the position of any polarizer and forming a second light-shielding part flush with an exit light surface of any polarizer after the colloid is solidified; the first transparent layer and the second transparent layer jointly coat the polarizers and the second light-shielding part.

10. A display module, characterized by The display module is prepared by any method in claims 1-9.

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