Method for manufacturing 3D display unit and method for manufacturing 3D display

Abstract

The present invention provides a method for manufacturing a 3D display unit and a method for manufacturing a 3D display. The method comprises the following steps: providing a polarizing film; cutting the polarizing film to form a first polarizing film sheet and a second polarizing film sheet; extracting the first polarizing film sheet using an extraction device and affixing it to the surface of a first pixel of the display unit; extracting the second polarizing film sheet using an extraction device, rotating it 90° relative to the first polarizing film sheet, and affixing it to the surface of a second pixel adjacent to the first pixel. The above technical solution utilizes only one polarizing film and can achieve the production of a 3D display device by making minor modifications to conventional SMT equipment. Furthermore, since the pixel units are independently processed, they can subsequently be encapsulated with epoxy resin sealant to achieve optical isolation between the pixel units and reduce crosstalk.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a method for manufacturing a 3D display unit and a method for manufacturing a 3D display. Background Art

[0002] Currently, there are various 3D display screens designed and manufactured based on polarization technology on the market. However, they basically use two different polarizing films, which are processed using different film-laminating technologies to form a new polarizing film. The polarizing film is then bonded to the display module using back-laminated adhesive technology to form a polarized 3D display screen. However, most of the preparation processes are complicated and are restricted by the molding principle and manufacturing precision of the entire product, resulting in mediocre display effects and the crosstalk problem cannot be well solved. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a method for manufacturing a 3D display unit and a method for manufacturing a 3D display, so as to improve the manufacturing accuracy of the products.

[0004] In order to solve the above problems, the present invention provides a method for manufacturing a 3D display unit, comprising the following steps: providing a polarizing film; cutting the polarizing film to form a first polarizing film sheet and a second polarizing film sheet; using an extraction device to extract the first polarizing film sheet and pasting it on the surface of a first pixel point of the display unit; using an extraction device to extract the second polarizing film sheet, and rotating it 90° relative to the first polarizing film sheet, and pasting it on the surface of a second pixel point adjacent to the first pixel point.

[0005] The above technical solution uses only one polarizer and can be used to manufacture 3D display devices with minimal modifications to conventional SMT equipment. Furthermore, because the pixel units are independently processed, they can be subsequently encapsulated with epoxy resin to achieve optical isolation and reduce crosstalk. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Attachment Figure 1 Shown is a flow chart of a specific implementation method of the manufacturing method of the 3D display unit of the present invention.

[0007] Attachment Figure 2A To the attached Figure 2E Shown is a schematic diagram of the process steps of the above specific embodiment. DETAILED DESCRIPTION

[0008] The specific implementation methods of the manufacturing method of the 3D display unit and the manufacturing method of the 3D display provided by the present invention are described in detail below with reference to the accompanying drawings.

[0009] Attachment Figure 1The flowchart of a specific embodiment of the method for manufacturing a 3D display unit according to the present invention comprises: step S10, providing a polarizing film; step S11, cutting the polarizing film into a first polarizing film sheet and a second polarizing film sheet; step S12, applying UV-curable glue to the surface of the display unit; step S13, using an extraction device to extract the first polarizing film sheet and affixing it to the surface of a first pixel of the display unit; step S14, while maintaining the orientation of the display unit, using the extraction device to extract the second polarizing film sheet, rotating it 90° relative to the first polarizing film sheet, and affixing it to the surface of a second pixel adjacent to the first pixel; step S15, irradiating the mounted display unit with a UV lamp.

[0010] Attachment Figure 2A To the attached Figure 2E Shown is a schematic diagram of the process steps of the above specific embodiment.

[0011] Attachment Figure 2A As shown, referring to step S10, a polarizing film 20 is provided. The polarizing film 20 is a film that can filter ordinary light into polarized light. The polarization direction of the filtered polarized light is also commonly referred to as the polarization direction of the polarizing film. For the same film, the polarization direction of different regions is the same. The polarization direction of the polarizing film 20 is represented by a dotted line in the figure.

[0012] Attachment Figure 2B As shown, referring to step S11, the polarizing film 20 is cut to form a first polarizing film sheet 201 and a second polarizing film sheet 202. This step is described using the example of cutting to form multiple polarizing films. A corresponding number of polarizing films are cut to form the number of pixel units in the display unit to be processed for subsequent attachment. The cutting operation is performed in situ and does not change the polarization direction of the films. Therefore, the first polarizing film sheet 201 and the second polarizing film sheet 202 still have the same polarization direction.

[0013] Attachment Figure 2C As shown, referring to step S12, UV-curable glue 22 is applied to the surface of the display unit 21. This step is optional. The display unit 21 can be directly processed to form a 3D display. In order to improve the adhesion of the polarizing film, UV curing technology can be used to strengthen the adhesion. Before coating, the display unit 21 is cleaned to remove dust and debris on its surface. The viscosity of the glue is 5000, which has the worst fluidity. The coating thickness is controlled to be 0.02mm.

[0014] Attachment Figure 2DAs shown, referring to step S13, an extraction device 23 is used to extract the first polarizing film 201 pasted on the surface of the first pixel point 211 of the display unit 21. In order to better utilize the machines that have been mass-produced to implement the above process, the extraction device 23 in this step preferably uses the material picking gripper of the SMT equipment. Furthermore, the end of the material picking gripper is transformed into a rectangular suction nozzle 231. The size of the suction nozzle 231 can be designed to be the same as the size of the polarizing film, or slightly larger or smaller than the size of the polarizing film. The surface of the suction nozzle 231 can be further covered with a high-density rubber layer to increase the vacuum force of the suction nozzle. Further, as shown in the attached Figure 2D As shown in the cross-sectional view of the extraction device 23 along the AA direction, the interior of the suction nozzle 231 has a gas passage hole 232 to form vacuum adsorption.

[0015] Attachment Figure 2E As shown, referring to step S14, the orientation of the display unit 21 remains unchanged, while the extraction device 23 is used to extract the second polarizing film 202, rotate it 90 degrees relative to the first polarizing film, and adhere it to the surface of the second pixel 212 adjacent to the first pixel 211. The above steps rotate the polarization direction of the polarizing film by 90 degrees, which can be clockwise or counterclockwise, while maintaining the orientation of the display unit 21 unchanged, thereby forming a polarization effect in a different direction from the adjacent polarizing film, allowing viewers to achieve 3D display by wearing polarized glasses. In other specific embodiments, the extraction device 23 can be stationary and the display unit can be rotated 90 degrees, or both can be rotated to achieve a 90-degree rotation in the relative position between the extraction device 23 and the display unit 21. In other specific embodiments, a double-headed extraction device can be used to extract two polarizing films at the same time, rotate one of them 90 degrees, and then adhere them simultaneously, so as to achieve the above structure.

[0016] In the above specific embodiment, the extraction device 23 extracts the first polarizing film 201 pasted on the surface of the first pixel point 211 of the display unit 21, and the extraction device does not move. In other specific embodiments, the extraction device 23 can also rotate an angle of, for example, 45° during the process of extracting the first polarizing film 201, and correspondingly rotate 135° during the process of extracting the first polarizing film 201 to ensure that the relative angle between the two remains 90°.

[0017] For specific embodiments with multiple polarizing films and display unit pixels, steps S13 and S14 can be performed alternately to form an array of pixels with alternating polarization directions on the surface of the display unit 21, thereby achieving 3D display. The above steps use a single polarizer and can be used to fabricate a 3D display device by making minor modifications to conventional SMT equipment. Furthermore, since the pixel units are independently processed, they can subsequently be encapsulated with epoxy resin sealant to achieve optical isolation between the pixel units and reduce crosstalk.

[0018] Referring to step S15, the mounted display unit is illuminated with a UV lamp. This step is optional. For technical solutions using UV curing technology to enhance adhesion, the UV curing adhesive must be reinforced after the above process to allow for UV curing and dehydration. During the UV curing process, a flat glass plate must be used to level the display unit with the polarizing film attached. This glass plate cannot be removed until the UV curing adhesive is fully cured.

[0019] Furthermore, after the above steps are completed, the above-mentioned product as a whole needs to be surface encapsulated. Use epoxy resin sealant mixed with black masterbatch to pot the display unit after the polarizing film is mounted on the light-emitting surface of the mold and UV curing is completed. After potting is completed, vacuum is drawn once, and then the demolding protective film is affixed, the surface fixture is installed, and it is placed in a high-temperature box to enter the high-temperature accelerated curing stage. After the entire curing process is completed, the surface fixture and the special mold can be removed to complete the production and processing of the entire product. After the entire product is completed, the demolding protective film on the surface of the final product does not need to be removed, and it can be removed after the end user completes the product assembly.

[0020] The above method can be further used to manufacture a display unit part in a 3D display.

[0021] The above description is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for manufacturing a 3D display unit, characterized in that: The steps include: providing a polarizing film; Cutting the polarizing film to form a first polarizing film sheet and a second polarizing film sheet, wherein the first polarizing film sheet and the second polarizing film sheet have the same polarization direction; Using an extraction device to extract the first polarizing film attached to the first pixel surface of the display unit; A second polarizing film is extracted by an extraction device, rotated 90 degrees relative to the first polarizing film, and affixed to the surface of a second pixel adjacent to the first pixel. The second polarizing film is affixed to the surface of the second pixel adjacent to the first pixel while maintaining the orientation of the display unit. The extraction device is rotated by an angle and affixed to the surface of the second pixel adjacent to the first pixel. The extraction device is the material grabber of the SMT equipment; The material picking gripper comprises a rectangular suction nozzle with a gas passage hole inside the suction nozzle to form vacuum adsorption; The display unit, which has been placed in a mold, has a polarizing film mounted on the light-emitting surface and has been UV-cured, is potted using epoxy resin sealant mixed with black masterbatch.

2. The method according to claim 1, characterized in that The step of using an extracting device to extract the first polarizing film adhered to the surface of the first pixel of the display unit includes the step of rotating the first polarizing film by an angle.

3. The method according to claim 1, characterized in that Before pasting, the display unit is coated with ultraviolet curing glue on the surface.

4. The method according to claim 3, characterized in that The viscosity of the UV curing glue is 5000 and the coating thickness is 0.02mm.

5. The method according to claim 3, characterized in that Use ultraviolet light to irradiate the mounted display unit to dehydrate and cure the ultraviolet curing glue.

6. The method according to claim 5, characterized in that During the UV-curing glue curing step, a flat plate is used to press the surface of the display unit on which the polarizing film is attached to perform a leveling operation.

7. A method for manufacturing a 3D display, characterized in that: The display unit is manufactured using the method according to claim 1.

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