Screen optical laminating process and medical display

Abstract

The embodiment of the invention discloses a screen optical laminating process and a medical display, and the process comprises the steps: preparing an optical adhesive which is provided with a first surface and a second surface which are oppositely arranged, and the first surface and the second surface of the optical adhesive are provided with release films; the first face of the optical cement is attached to the screen protection component; after the first surface of the optical cement is attached to the screen protection component, defoaming treatment is carried out; the second face of the optical cement is attached to the OC of the display screen; and connecting the backlight fixing bracket with the screen protection component. According to the invention, after the protective iron frame of the display screen is dismounted, optical cement lamination is realized in an overturning manner, so that the problems of OC scratch damage and secondary pollution of the backlight module caused by dismounting the backlight module during lamination are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of displays, and more specifically to a screen optical bonding process and a medical display. Background Art

[0002] In the medical industry, due to the requirement for sterility, liquids are often used to clean monitors, especially surgical monitors. When using the monitor, the surgeon may touch the monitor with hands containing blood or other liquids. The relevant liquid may flow into the monitor and cause the internal electronic components of the monitor to short-circuit, resulting in the monitor not being able to display normally. The risk may cause the operation to be unable to proceed normally, or even cause a major medical accident, endangering the patient's life. In view of this, it is necessary to add a protective layer to the front of the monitor. At present, the industry generally adds protective glass (CG) or touch screen (TP) on the surface. Due to the high requirements of the medical industry for display, the protective glass (CG) and touch screen (TP) are mainly fixed to the front of the monitor through optical bonding.

[0003] Currently, there are two main processes for optical bonding: OCA optical bonding and OCR optical bonding.

[0004] The characteristics of OCA optical bonding are simple bonding process and high efficiency. The bonding adhesive layer is uniform and the OC is subjected to force in one direction, so the bonding display effect is good. The bonding light leakage and yellow spot problems will be greatly improved. The current mature OCA optical bonding process is that the OC of the LCD screen is directly bonded to the protective glass (CG) or touch screen (TP), and the backlight is assembled after the bonding is completed. For medical display manufacturers, due to the small production quantity and many types, it is impossible to perform OC bonding and assembling the backlight at the LCD screen manufacturer before shipping. You can only buy a complete LCD screen, remove the backlight for OC bonding. After the backlight is removed from the complete LCD screen, there will be problems of OC scratches and fragments and secondary contamination of the backlight. Therefore, OCA optical bonding is less used in the medical display industry.

[0005] The OCR optical bonding process is complex, the production cycle is long, and the bonding adhesive layer has the problem of uneven thickness. Since the OCR optical glue is liquid, a dam needs to be built around the OC. The dam allows the OC to be fixed to multiple different LCD screen parts through structural glue. The display will generate heat when it is running. Due to the differences in size and thermal deformation coefficients of different parts of the LCD screen, the OC is subjected to forces in multiple directions, so the OCR bonding effect is poor, and it is easy to produce display MURA problems such as light leakage and yellow spots. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a screen optical bonding process and a medical display, aiming to solve the problem of OC scratches and damage and secondary contamination of the backlight module caused by the need to remove the backlight module during the bonding process.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] In one aspect, the present invention provides a screen optical bonding process, comprising:

[0009] Prepare an optical adhesive, wherein the optical adhesive has a first surface and a second surface arranged opposite to each other, and a release film is provided on both the first surface and the second surface of the optical adhesive;

[0010] Lay the first side of the optical adhesive on the screen protection component;

[0011] After the first side of the optical adhesive is attached to the screen protection component, a degassing process is performed;

[0012] Lay the second side of the optical adhesive to the OC of the display screen;

[0013] Connect the backlight fixing bracket to the screen protection assembly.

[0014] Furthermore, the step of laminating the first surface of the optical adhesive to the screen protection component includes:

[0015] Place the cleaned screen protection component with its back side facing upward on the first bonding plane and fix it;

[0016] Placing the optical adhesive on the second bonding plane with the first surface of the optical adhesive facing upwards;

[0017] Tear off the release film on the first side of the optical adhesive;

[0018] Turn the screen protector 180 degrees so that its back is facing downward, and move the screen protector over the optical adhesive;

[0019] The second bonding plane is rolled by rolling to make the first surface of the optical adhesive contact and adhere to the back surface of the screen protection component.

[0020] Furthermore, the first bonding plane is a hard plane, and the second bonding plane is a soft plane.

[0021] Furthermore, after the first surface of the optical adhesive is bonded to the screen protection component and a degassing process is performed, the method further includes:

[0022] Apply tape to the back of the screen protector except for the area where the optical adhesive is located.

[0023] Furthermore, the step of laminating the second surface of the optical adhesive to the OC of the display screen includes:

[0024] Remove the protective iron frame of the display screen to make the OC of the display screen active;

[0025] Place the display screen with the protective iron frame removed in the fitting and positioning fixture, with the OC of the display screen facing upwards;

[0026] Tear off the release film on the second side of the optical adhesive after bonding with the screen protection component, and place it in the bonding and positioning fixture, with the screen protection component located above the display screen with the protective iron frame removed, and the second side of the optical adhesive facing downward;

[0027] After the fitting positioning fixture is locked, it is turned 180 degrees to exchange the position of the screen protection component with the display screen with the protective iron frame removed. The OC of the display screen moves towards the screen protection component under its own gravity and contacts the second surface of the optical adhesive for fitting;

[0028] Carry out vacuum and degassing treatment;

[0029] After vacuum and degassing treatment, the positioning fixture is fitted and then turned 180 degrees to reset.

[0030] Furthermore, the step of connecting the backlight fixing bracket to the screen protection component includes:

[0031] Place the screen protector with the back facing downwards;

[0032] Assemble a backlight fixing bracket around the backlight module of the display screen and the OC of the display screen, so that the backlight module of the display screen and the OC of the display screen are stored within the frame range of the backlight fixing bracket;

[0033] Remove the tape and apply glue to the joint between the backlight fixing bracket and the back of the screen protection component;

[0034] After dispensing, let it stand to allow the glue to solidify.

[0035] Furthermore, the weight of the release film on the second surface of the optical adhesive is greater than the weight of the release film on the first surface of the optical adhesive.

[0036] Furthermore, the screen protection component is a touch screen and a protection glass.

[0037] Furthermore, the optical glue is T-OCA glue.

[0038] On the other hand, the present invention also provides a medical display prepared using the above-mentioned screen optical bonding process.

[0039] Compared with the prior art, the present invention has the following beneficial effects: a screen optical bonding process, comprising: preparing optical glue, the optical glue having a first surface and a second surface arranged relatively, the first surface and the second surface of the optical glue both being provided with release films; bonding the first surface of the optical glue to the screen protection component; performing a degassing treatment after bonding the first surface of the optical glue to the screen protection component; bonding the second surface of the optical glue to the OC of the display screen; connecting the backlight fixing bracket to the screen protection component. The present invention achieves optical bonding by removing the protective iron frame of the display screen and flipping it, thereby avoiding the problem of scratches and damage to the OC and secondary contamination of the backlight module caused by the need to remove the backlight module during bonding.

[0040] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0042] Figure 1 A main flow chart of a screen optical bonding process provided by a specific embodiment of the present invention;

[0043] Figure 2 A sub-process of a screen optical bonding process provided for a specific embodiment of the present invention Figure 1 ;

[0044] Figure 3 A sub-process of a screen optical bonding process provided for a specific embodiment of the present invention Figure 2 ;

[0045] Figure 4 A sub-process of a screen optical bonding process provided for a specific embodiment of the present invention Figure 3 . DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0048] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0049] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0050] like Figure 1 As shown, an embodiment of the present invention provides a screen optical bonding process, including the following steps: S10-S50.

[0051] S10, preparing an optical adhesive, wherein the optical adhesive has a first surface and a second surface that are arranged opposite to each other, and both the first surface and the second surface of the optical adhesive are provided with a release film.

[0052] Optical adhesive uses T-OCA adhesive, which is a sheet-like silicon optical bonding adhesive material with a thickness of 0.3-0.9mm. This thickness can achieve good optical performance and bonding strength while taking into account the bonding stability and cost of large-size LCD screens. T-OCA adhesive is colorless and transparent, with a light transmittance of more than 99%, which can ensure that the screen display is clear and undistorted after bonding, and restore the original color and brightness of the image to the greatest extent. Its adhesive bonding strength is high, and after bonding, there is no need to make a separate reinforcing adhesive on the side like some other optical adhesives, which simplifies the process steps and ensures long-term reliability.

[0053] The first and second sides of the optical adhesive are both provided with release films, wherein the weight of the release film on the second side is greater than that of the release film on the first side. For example, the release film on the first side is made of a lightweight PET release film with a conventional thickness of 50μm, which meets the convenience of operation in the initial stage of bonding and prevents the adhesive surface from being easily damaged; the release film on the second side is made of a thickened high-strength PET release film of 80μm. In the subsequent OC bonding with the display screen, due to its heavier weight, it can better provide support for the T-OCA adhesive, avoid deformation or wrinkles of the optical adhesive during complex operations, and ensure bonding accuracy, which is particularly critical in the bonding scene of large-size LCD screens, to prevent uneven display after bonding or MURA problems such as dark lines and bright lines due to the influence of the physical properties of the adhesive itself.

[0054] S20, laminating the first surface of the optical adhesive to the screen protection component.

[0055] In one embodiment, if Figure 2 As shown, step S20 specifically includes the following steps: S201-S205.

[0056] S201, placing the cleaned screen protection component with its back side facing upward on a first bonding plane and fixing it.

[0057] The screen protection component can be a touch screen (TP) or protective glass (CG) commonly used in medical displays. Taking the protective glass (CG) as an example, it needs to be strictly cleaned before bonding. Use a dust-free cloth dipped in a special LCD screen cleaner and wipe it at least three times in a spiral from the center to the edge to remove dust, oil and other tiny particles that may be contaminated on the glass surface, ensure that the bonding surface is absolutely clean, and avoid foreign matter mixed in the adhesive layer to affect the bonding effect and display clarity.

[0058] Place the cleaned screen protection component (such as CG) with the back facing up on the first bonding plane of the mesh cage bonding equipment and fix it. The first bonding plane is a hard plane, specifically made of cemented carbide. The surface is ultra-precision ground and the flatness error is controlled within ±0.001mm. The preset positioning line is etched by high-precision laser with an accuracy of ±0.05mm, ensuring that the CG can be accurately positioned after placement, providing a reference position for subsequent bonding. Activate the vacuum adsorption button of the mesh cage bonding equipment to firmly adsorb the CG through the tiny vacuum adsorption holes distributed on the first bonding plane to prevent displacement in subsequent operations.

[0059] S202, placing the optical adhesive on the second bonding plane with the first surface of the optical adhesive facing upward.

[0060] Cut the optical glue to the corresponding length and width, such as 700mm in length and 400mm in width for a 32-inch medical display, and place it flat on the second bonding plane of the mesh box bonding equipment. The second bonding plane is a soft plane made of soft silicone with a Shore hardness of 30A, which can buffer the roller pressure and adapt to slight deformation of the glue material to ensure uniform bonding and make the first side of the optical glue face up.

[0061] S203, tearing off the release film on the first surface of the optical adhesive.

[0062] Tear off the release film on the first side, and immediately use a high-resolution microscope (magnification 50 times) to check the surface integrity of the optical adhesive and whether it is contaminated by secondary pollution. If scratches, bubbles or foreign matter are found on the adhesive surface, immediately replace the adhesive material and operate again.

[0063] S204, turning the screen protection component 180 degrees so that its back side faces downward, and moving the screen protection component above the optical adhesive.

[0064] The rotating mechanism of the mesh box bonding equipment is used to flip the first bonding plane 180 degrees. Since the screen protection component is vacuum-adsorbed on the first bonding plane, the screen protection component is also flipped 180 degrees following the first bonding plane, so that the back of the screen protection component faces downward, which is convenient for subsequent bonding operations with optical glue.

[0065] S205 , rolling the second bonding plane by rolling, so that the first surface of the optical adhesive contacts and adheres to the back surface of the screen protection component.

[0066] An electric roller of the mesh cage bonding equipment is used. The roller is made of rubber and has fine horizontal lines on the surface to increase friction. The lower surface of the second bonding plane is rolled at a uniform speed from left to right. Since the second bonding plane is a soft plane, the second bonding plane is deformed during the rolling of the roller, so that the back side of the first screen protection component of the optical glue located on the second bonding plane contacts and adheres.

[0067] S30, performing a degassing process after the first surface of the optical adhesive is bonded to the screen protection component.

[0068] After the bonding is completed, it is placed in a professional vacuum degassing equipment for degassing treatment. The vacuum degree in the equipment is maintained at -95kPa, the temperature is set at 50℃, and the processing time is 30 minutes. This can effectively eliminate the tiny bubbles and stress that may be generated inside, improve the optical performance of the product after bonding, reduce the light refraction and scattering problems caused by bubbles, and make the display screen pure and flawless.

[0069] In one embodiment, step S30 further includes the following steps: S35.

[0070] S35, attaching adhesive tape to the back side of the screen protection component except for the area where the optical adhesive is located.

[0071] Use a 10mm wide masking tape, 5mm away from the edge of the optical tape, and attach it around the screen protection component. In the subsequent assembly of the backlight fixing bracket, it can effectively prevent the metal bracket from scratching the screen protection component, ensure the integrity of the appearance, and avoid abnormal light refraction due to minor scratches that affect the display effect. Especially for medical displays, it can prevent bacteria from growing due to appearance damage and meet sterility requirements.

[0072] S40, attaching the second side of the optical adhesive to the OC of the display screen.

[0073] In one embodiment, if Figure 3 As shown, step S40 specifically includes the following steps: S401-S406.

[0074] S401, removing the protective iron frame of the display screen to make the OC of the display screen active.

[0075] The display screen can generally be divided into three parts: protective iron frame, OC (Open Cell), and backlight module. Among them, the protective iron frame is a metal material fixed on the four sides of the display screen. Its function is to prevent OC from falling out. In order to avoid the interference of the protective iron frame on the fitting of OC, the protective iron frame needs to be removed. After removal, the OC of the display screen is in an active state and can fall out freely, which is convenient for subsequent precise alignment and fitting.

[0076] S402, placing the display screen with the protective iron frame removed in a fitting and positioning fixture, with the OC of the display screen facing upward.

[0077] The fitting and positioning fixture includes two parts, the upper and lower parts, which can be closed and locked. The display screen with the protective iron frame removed is placed between the two parts, and the OC of the display screen is kept facing upward.

[0078] S403, tear off the release film on the second side of the optical adhesive after bonding with the screen protection component, and place it in a bonding and positioning fixture, with the screen protection component located above the display screen with the protective iron frame removed, and the second side of the optical adhesive facing downward.

[0079] The screen protection component (at this time, the back of the screen protection component has been bonded with optical adhesive) is also placed between the upper and lower parts of the bonding and positioning fixture and is located above the display screen except for the protective iron frame.

[0080] The film tearing operation also needs to be carried out in a dust-free environment. After tearing the film, an ion blower is used to neutralize the static electricity that may be generated, and then the film is placed in a fixture. The whole process must be quick to reduce the exposure time of the display's OC and optical glue to the air to prevent dust absorption.

[0081] S404, the fitting positioning fixture is locked and then turned 180 degrees to exchange the positions of the screen protection component and the display screen with the protective iron frame removed. The OC of the display screen moves toward the screen protection component under the action of its own gravity and contacts and fits with the second surface of the optical adhesive.

[0082] After the bonding and positioning fixture is locked, the bonding and positioning fixture is flipped 180 degrees by the flipping machine to ensure that the OC of the display screen falls vertically under its own gravity and naturally and evenly bonds with the second side of the optical adhesive, avoiding uneven force, deformation or damage to the OC caused by external force in the traditional bonding method, thereby improving the bonding yield and reducing display MURA problems (such as light leakage, yellow spots, etc.) caused by poor bonding, ensuring that the medical display screen is clear and uniform.

[0083] S405, performing vacuum and degassing treatment.

[0084] The flipped bonding positioning fixture is translated to a large vacuum degassing chamber. Through the vacuum pump, the vacuum degree in the chamber is increased to -98kPa within 10-15 minutes. At the same time, the heating system is turned on to increase the temperature of the chamber to 60°C at a heating rate of 0.5°C / min. The vacuum and temperature conditions are maintained for 40-50 minutes for degassing. High temperature causes small molecule volatiles and residual bubbles in the optical glue to expand and escape, and the vacuum environment accelerates the discharge of bubbles, further improving the bonding quality, eliminating the interference of tiny bubbles on light propagation, enhancing the optical performance of the screen, and ensuring that the medical display presents pure and flawless images to meet the high requirements for subtle tissue observation during surgery.

[0085] S406, after vacuum and degassing treatment, the positioning fixture is turned 180 degrees to reset.

[0086] After degassing is completed, the laminating and positioning jig is flipped 180 degrees by the flipping machine to reset it. After reset, the laminating and positioning jig is unlocked, and the laminating products are carefully taken out by automated equipment or manually, and transferred to the inspection area to check whether the laminating surface is flat, whether there are bubbles or impurities remaining, to ensure that the product meets the quality standards.

[0087] S50, connecting the backlight fixing bracket to the screen protection component.

[0088] In one embodiment, if Figure 4 As shown, step S50 specifically includes the following steps:

[0089] S501, place the screen protection component with its back side facing downward.

[0090] At this time, there are optical glue, the OC of the display screen and the backlight module under the screen protection component in sequence. Since the screen protection component and the OC of the display screen are glued together by optical glue, and the backlight module and the OC of the display screen remain relatively independent due to the removal of the protective iron frame, that is, the backlight module is easy to move relative to the OC of the display screen and the screen protection component, so a subsequent backlight fixing bracket is required to fix the three.

[0091] S502, assembling a backlight fixing bracket around the backlight module of the display screen and the OC of the display screen, so that the backlight module of the display screen and the OC of the display screen are stored within the frame range of the backlight fixing bracket.

[0092] S503, tear off the tape, and apply glue to the connection position between the backlight fixing bracket and the back of the screen protection component.

[0093] The masking tape that was attached to prevent the screen protection component from being scratched during the assembly of the backlight fixing bracket should be carefully removed at this time. Make sure that the tape is completely removed and no glue stains are left on the back of the screen protection component. If a small amount of residual glue is found, immediately wipe it clean with a dust-free cloth dipped in a small amount of special glue remover. The glue remover evaporates quickly and is non-corrosive, and will not damage the back material of the screen protection component.

[0094] RTV (room temperature vulcanized) silicone is used for dispensing. This glue has good sealing, bonding properties, and heat and aging resistance, and is suitable for complex working conditions of medical displays. The dispensing equipment uses a high-precision pneumatic glue gun, and the diameter of the glue gun outlet is precisely controlled to be 1.2mm. With the automated dispensing control system, it can accurately operate according to the preset path and glue quantity parameters. Along the gap where the backlight fixing bracket and the screen protection component are connected, the glue is applied at a uniform speed of 2mm / s, and the amount of glue is controlled to be 0.18ml per 10mm gap to ensure that the glue is filled fully and evenly without any gaps, forming a continuous and sealed glue layer, effectively blocking dust and water vapor from invading the interior of the display, enhancing the integrity of the structure, improving product reliability and service life, ensuring the stable operation of the electronic components inside the medical display, and maintaining a stable display effect.

[0095] S504: After the glue dispensing is completed, the glue is left to stand to solidify.

[0096] The products with glue dispensing are transferred to a constant temperature and humidity static room. The temperature in the room is stably controlled at 25°C, the humidity is maintained at 50%, and the environmental fluctuation range is extremely small, providing ideal conditions for glue curing. The products are placed on special anti-static racks with a spacing of 20cm between each layer of the rack to ensure that the products do not interfere with each other and the air circulation is smooth. The static time is set to 4 hours. During this period, the glue is gradually vulcanized and cross-linked under a suitable temperature and humidity environment to form a high-strength and high-elasticity solidified glue layer, which firmly bonds the backlight fixing bracket and the screen protection component to make the overall structure stable and reliable. After this static treatment, the product can smoothly enter the subsequent electrical measurement and appearance inspection process, reduce the test errors and appearance defects caused by incomplete curing of the glue, improve the product yield, ensure that each medical display meets the strict quality standards from structure to performance, and escort the accurate display of medical images. Ordinary technicians can achieve the expected process effect by following the above process specifications.

[0097] It should be noted that, since a backlight fixing bracket is used and the backlight fixing bracket has the fixing function of the original protective iron frame, the protective iron frame can be replaced by the backlight fixing bracket, and the protective iron frame is no longer needed after this process.

[0098] The present invention realizes optical adhesive bonding by removing the protective iron frame of the display screen and flipping it over, thereby avoiding the problem of OC scratches and damage and secondary contamination of the backlight module caused by the need to remove the backlight module during bonding.

[0099] In one embodiment, the present invention further provides a medical display, which is prepared using the above-mentioned screen optical bonding process.

[0100] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A screen optical bonding process, characterized in that: include: Prepare an optical adhesive, wherein the optical adhesive has a first surface and a second surface arranged opposite to each other, and both the first surface and the second surface of the optical adhesive are provided with a release film; Lay the first side of the optical adhesive on the screen protection component; After the first side of the optical adhesive is attached to the screen protection component, a degassing process is performed; Lay the second side of the optical adhesive to the OC of the display screen; Connect the backlight fixing bracket to the screen protection assembly.

2. A screen optical bonding process according to claim 1, characterized in that: The step of laminating the first surface of the optical adhesive to the screen protection component comprises: Place the cleaned screen protection component with its back side facing upward on the first bonding plane and fix it; Placing the optical adhesive on the second bonding plane with the first surface of the optical adhesive facing upwards; Tear off the release film on the first side of the optical adhesive; Turn the screen protector 180 degrees so that its back is facing downward, and move the screen protector over the optical adhesive; The second bonding plane is rolled by rolling to make the first surface of the optical adhesive contact and adhere to the back surface of the screen protection component.

3. A screen optical bonding process according to claim 2, characterized in that: The first bonding plane is a hard plane, and the second bonding plane is a soft plane.

4. The screen optical bonding process according to claim 1, characterized in that: After the first surface of the optical adhesive is bonded to the screen protection component and a degassing process is performed, the method further comprises: Apply tape to the back of the screen protector except for the area where the optical adhesive is located.

5. The screen optical bonding process according to claim 1, characterized in that: The step of laminating the second surface of the optical adhesive to the OC of the display screen includes: Remove the protective iron frame of the display screen to make the OC of the display screen active; Place the display screen with the protective iron frame removed in the fitting and positioning fixture, with the OC of the display screen facing upwards; Tear off the release film on the second side of the optical adhesive after bonding with the screen protection component, and place it in the bonding and positioning fixture, with the screen protection component located above the display screen with the protective iron frame removed, and the second side of the optical adhesive facing downward; After the fitting positioning fixture is locked, it is turned 180 degrees to exchange the position of the screen protection component with the display screen with the protective iron frame removed. The OC of the display screen moves towards the screen protection component under its own gravity and contacts the second surface of the optical adhesive for fitting; Carry out vacuum and degassing treatment; After vacuum and degassing treatment, the positioning fixture is fitted and then turned 180 degrees to reset.

6. The screen optical bonding process according to claim 4, characterized in that: The method of connecting the backlight fixing bracket to the screen protection component comprises: Place the screen protector with the back facing downwards; Assemble a backlight fixing bracket around the backlight module of the display screen and the OC of the display screen, so that the backlight module of the display screen and the OC of the display screen are stored within the frame range of the backlight fixing bracket; Remove the tape and apply glue to the joint between the backlight fixing bracket and the back of the screen protection component; After dispensing, let it stand to allow the glue to solidify.

7. The screen optical bonding process according to claim 1, characterized in that: The weight of the release film on the second side of the optical adhesive is greater than the weight of the release film on the first side of the optical adhesive.

8. The screen optical bonding process according to claim 1, characterized in that: The screen protection components include the touch screen and the protection glass.

9. A screen optical bonding process according to any one of claims 1 to 8, characterized in that: The optical glue is T-OCA glue.

10. A medical display, characterized in that: Prepared by the screen optical bonding process described in any one of claims 1-9.

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