Display screen laminating method, device and display screen

Abstract

The present application discloses a display screen bonding method, device and display screen, which include applying bonding glue on the display screen body and frame respectively; placing the display screen body and the frame in a dust-free box, and obtaining the vertical distance between the display screen body and the frame, and gradually moving the display screen in a direction close to the frame to bond based on the vertical distance between the display screen body and the frame; setting marking glue at the four corners of the frame, and obtaining the spreading angle and spreading duration of each marking glue in the process of the display screen moving in a direction close to the frame to bonding; judging whether the vertical moving direction between the display screen body and the frame is stable based on the spreading angle of the marking glue, and if not, dynamically adjusting the position of the display screen body and / or the frame; judging whether the bonding glue flow between the display screen body and the frame is stable based on the spreading duration of the marking glue, and if not, replenishing and / or removing the bonding glue. The present application has the effect of improving the bonding accuracy of the display screen.

Description

Technical Field

[0001] The present application relates to the technical field of display screens, and in particular to a display screen bonding method, device and display screen. Background Art

[0002] At present, electronic display screens and cover plates are generally connected by frame pasting, which is also called glue pasting. Double-sided tape is used to fix the touch screen and the four sides of the display screen. There is an air layer between the display screen and the touch screen, which leads to poor display effect and easy entry of dust and moisture, resulting in a shorter life of the display screen.

[0003] In the related technology, in order to improve the defects of frame bonding, optical bonding is increasingly used in display screens. Optical bonding can reduce the air gap between the display screen and the cover plate, improve the display effect and service life. However, during the optical bonding process, the touch screen and the display screen are prone to offset, which affects the display effect and needs to be improved urgently. Summary of the invention

[0004] In order to improve the accuracy of display screen lamination, the present application provides a display screen lamination method, device and display screen.

[0005] In a first aspect, the present application provides a display screen bonding method, which adopts the following technical solution:

[0006] A display screen bonding method comprises the following steps:

[0007] Applying adhesive to the display screen body and the frame respectively, wherein the adhesive on the frame is matched with the adhesive on the display screen body;

[0008] Place the display screen body and the frame in a dust-free box, and obtain the vertical distance between the display screen body and the frame;

[0009] Based on the vertical distance between the display screen body and the frame, gradually move the display screen toward the frame until they fit together;

[0010] Setting marking glue at the four corners of the frame, and obtaining the spreading angle and spreading duration of each marking glue during the process of the display screen moving in a direction close to the frame to the bonding process;

[0011] Based on the spreading angle of the marking glue, judging whether the vertical movement direction between the display screen body and the frame is stable, and if not, dynamically adjusting the position of the display screen body and / or the frame;

[0012] Based on the spreading time of the marking glue, it is judged whether the bonding glue between the display screen body and the frame body flows smoothly. If it is not smooth, the bonding glue is supplemented and / or removed.

[0013] Preferably, the step of applying adhesive to the display screen body and the frame respectively, wherein the adhesive on the frame is matched with the adhesive on the display screen body, specifically comprises:

[0014] Place the frame under the display screen body;

[0015] Apply a first bonding adhesive to the middle of the display screen, and apply a second bonding adhesive to the middle of the frame;

[0016] Use an air gun to blow dust-free air toward the middle of the frame, so that the second bonding glue spreads around the frame to form a dam glue.

[0017] Preferably, the area of ​​the interval formed by the dam glue is the same as the area of ​​the first bonding glue.

[0018] Preferably, the step of placing the display screen body and the frame in a dust-free box and obtaining the vertical distance between the display screen body and the frame specifically includes:

[0019] A first mounting bracket and a second mounting bracket are set up in a dust-free box, wherein the second mounting bracket is located below the first mounting bracket, and the first mounting bracket can move in a direction close to or away from the second mounting bracket based on an external force;

[0020] Install the display screen body on the first mounting bracket, and install the frame on the second mounting bracket;

[0021] The distance between the first mounting bracket and the second mounting bracket is acquired based on the infrared rangefinder.

[0022] Preferably, the step of setting marking glue at the four corners of the frame and obtaining the spreading angle and spreading duration of each marking glue during the process of the display screen moving in the direction close to the frame to the bonding process specifically includes:

[0023] Inverted triangle-shaped marking glue is set at the four corners of the frame, and marking glue displacement traction auxiliary glue is pre-set at the four corners of the frame, wherein the traction auxiliary glue can attract the marking glue to move along a preset track;

[0024] Slowly moving the display screen toward the frame until it fits with the frame;

[0025] Real-time acquisition of the sharp-corner spreading angle and spreading duration of the marking glue set at the four corners of the frame on the preset track;

[0026] Count and record the displacement distance of the marked intersection angles within the same time interval.

[0027] Preferably, the step of providing inverted triangle-shaped marking glue at the four corners of the frame specifically includes:

[0028] The sharp corners of the marking glue are arranged toward the four corners of the frame, and irreversible temperature-changing color powder is doped in the marking glue.

[0029] Preferably, the step of pre-arranging the marking glue displacement traction auxiliary glue at the four corners of the frame, wherein the traction auxiliary glue can attract the marking glue to move along a preset track, specifically includes:

[0030] Linear traction auxiliary glue is coated on the four corners of the frame, wherein the concentration of the traction auxiliary glue is less than the concentration of the marking glue.

[0031] Preferably, after determining that the vertical moving direction between the display screen body and the frame is stable based on the spreading angle of the marking glue and that the bonding glue between the display screen body and the frame flows smoothly based on the spreading time of the marking glue, the following steps are also included:

[0032] Placing the frame on a heating platform and heating it to a preset heating temperature so that the bonding glue, marking glue and traction auxiliary glue are cured to form an optical glue layer;

[0033] The preset temperature exceeds the color changing temperature of the irreversible temperature-changing powder.

[0034] In a second aspect, the present application provides a display screen bonding device, which adopts the following technical solution:

[0035] A display screen laminating device, comprising:

[0036] A coating module, configured to apply bonding glue to the display screen body and the frame respectively;

[0037] A driving module is configured to gradually move the display screen toward the frame until it is in contact with the frame;

[0038] An image acquisition module is configured to obtain the spreading angle and spreading duration of each marking glue during the process of the display screen moving in a direction close to the frame body to the bonding process;

[0039] A judgment module configured to judge whether the vertical movement direction between the display screen body and the frame is stable based on the spreading angle of the marking glue and whether the bonding glue flow between the display screen body and the frame is smooth based on the spreading time of the marking glue;

[0040] The adjustment module is configured to dynamically adjust the position of the display screen body and / or the frame and to supplement and / or remove the bonding glue.

[0041] In a third aspect, the present application provides a display screen, which adopts the following technical solution: it is made by applying the above-mentioned display screen bonding method.

[0042] In summary, the present application includes at least one of the following beneficial technical effects:

[0043] 1. By applying bonding glue on the display screen body and the frame respectively, and the bonding glue on the frame is matched with the bonding glue on the display screen body, when the display screen body and the frame are bonded, the bonding state of the display screen is judged by the spreading angle and spreading time of the marking glue. When an unstable situation occurs, the position of the display screen body and / or the frame is dynamically adjusted, and the bonding glue is supplemented and / or removed, which helps to improve the accuracy of the display screen bonding;

[0044] 2. By doping the marking glue with irreversible temperature-changing color powder, and pre-setting the marking glue displacement traction auxiliary glue at the four corners of the frame, wherein the traction auxiliary glue can attract the marking glue to move along the preset trajectory, the concentration of the marking glue is greater than the concentration of the traction auxiliary glue, and the part of the marking glue containing the irreversible temperature-changing color powder is reversely transferred from high concentration to low concentration, and because the traction auxiliary glue is linear, the displacement of the marking glue is more obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a flow chart of a display screen bonding method mainly embodied in an embodiment of the present application.

[0046] Figure 2 It is a schematic block diagram of a display screen bonding device mainly embodied in an embodiment of the present application.

[0047] Explanation of the accompanying drawings: 1. coating module; 2. driving module; 3. image acquisition module; 4. judgment module; 5. adjustment module. DETAILED DESCRIPTION

[0048] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0049] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0050] The present application embodiment discloses a display screen bonding method. Figure 1 is a flow chart of a display screen bonding method according to an embodiment of the present invention. Figure 2 As shown, the process includes the following steps:

[0051] S1. Apply bonding glue to the display screen body and the frame respectively, wherein the bonding glue on the frame is matched with the bonding glue on the display screen body.

[0052] Wherein, step S1 specifically includes the following sub-steps:

[0053] Place the frame under the display screen body;

[0054] Apply a first bonding adhesive to the middle of the display screen, and apply a second bonding adhesive to the middle of the frame;

[0055] Use an air gun to blow dust-free air toward the middle of the frame, so that the second bonding adhesive spreads around the frame to form a dam adhesive. It should be noted that the area of ​​the dam adhesive is the same as the area of ​​the first bonding adhesive. In the process of using the air gun to blow dust-free air toward the middle of the frame, the air volume of the air gun is controlled by a computer program to calculate the size of the area formed by the dam adhesive. When the area of ​​the dam adhesive is the same as the area of ​​the first bonding adhesive, the air gun is controlled to stop supplying air. In addition, in the process of blowing dust-free air, the air gun can further blow away the dust remaining on the frame and the bubbles in the first bonding adhesive.

[0056] S2. Place the display screen body and the frame in a dust-free box, and obtain the vertical distance between the display screen body and the frame. Based on the vertical distance between the display screen body and the frame, gradually move the display screen toward the frame until they are in contact.

[0057] Specifically, step S2 specifically includes the following sub-steps:

[0058] A first mounting bracket and a second mounting bracket are set up in a dust-free box, wherein the second mounting bracket is located below the first mounting bracket, and the first mounting bracket can move in a direction close to or away from the second mounting bracket based on an external force;

[0059] Install the display screen body on the first mounting bracket, and install the frame on the second mounting bracket;

[0060] The distance between the first mounting bracket and the second mounting bracket is acquired based on the infrared rangefinder.

[0061] S3. Setting marking glue at the four corners of the frame, and obtaining the spreading angle and spreading duration of each marking glue during the process of the display screen moving in a direction close to the frame to be attached.

[0062] Specifically, step S3 includes the following sub-steps:

[0063] An inverted triangle-shaped marking glue is set at the four corners of the frame, wherein the sharp corners of the marking glue are set toward the four corners of the frame. It should be noted that the sharp corners of the marking glue are set toward the four corners of the frame, and irreversible temperature-changing color powder is doped in the marking glue. Among them, the irreversible temperature-changing color powder is commonly used in blue, red, and black. The irreversible temperature-changing color powder is colored at room temperature, and it disappears when the temperature reaches 65℃-75℃. The color of the irreversible temperature-changing color powder can be eliminated by heating, and it has the characteristics of clean color elimination without residue. In actual use, the marking effect of the marking glue can be magnified by using the colored marking glue, and the display is clearer.

[0064] A marking glue displacement traction auxiliary glue is pre-set at the four corners of the frame, wherein the traction auxiliary glue can attract the marking glue to move along a preset track. It should be noted that linear traction auxiliary glue is applied to the four corners of the frame, wherein the concentration of the traction auxiliary glue is less than the concentration of the marking glue. The concentration of the marking glue is greater than that of the traction auxiliary glue, and the part of the marking glue containing irreversible thermochromic powder is reversely transferred from high concentration to low concentration, and because the traction auxiliary glue is linear, the displacement of the marking glue is more obvious.

[0065] Slowly moving the display screen toward the frame until it fits with the frame;

[0066] The sharp angle and duration of the spread of the marking glue set at the four corners of the frame on the preset track are collected in real time. Specifically, the spread angle and duration can be counted and calculated by real-time shooting with an industrial CCD camera or by obtaining image frames in a monitoring video.

[0067] Count and record the displacement distance of the marked intersection angles within the same time interval.

[0068] S4. Based on the spreading angle of the marking glue, determine whether the vertical movement direction between the display screen body and the frame is stable. If not, dynamically adjust the position of the display screen body and / or the frame. Based on the spreading time of the marking glue, determine whether the bonding glue flow between the display screen body and the frame is smooth. If not, add and / or remove the bonding glue.

[0069] After determining that the vertical moving direction between the display screen body and the frame is stable based on the spreading angle of the marking glue and that the bonding glue between the display screen body and the frame flows smoothly based on the spreading time of the marking glue, the following steps are also included:

[0070] S5. Place the frame on a heating platform and heat it to a preset heating temperature so that the bonding glue, marking glue and traction auxiliary glue are cured to form an optical glue layer, wherein the preset temperature exceeds the color change temperature of the irreversible thermochromic powder.

[0071] Reference Figure 2 , the embodiment of the present application provides a display screen bonding device, comprising:

[0072] A coating module 1 is configured to apply bonding glue to the display screen body and the frame respectively;

[0073] A driving module 2 is configured to gradually move the display screen toward the frame until it is in contact with the frame;

[0074] An image acquisition module 3 is configured to obtain the spreading angle and spreading duration of each marking glue during the process of the display screen moving in a direction close to the frame;

[0075] A judgment module 4 is configured to judge whether the vertical movement direction between the display screen body and the frame is stable based on the spreading angle of the marking glue and whether the bonding glue flow between the display screen body and the frame is smooth based on the spreading time of the marking glue;

[0076] The adjustment module 5 is configured to dynamically adjust the position of the display screen body and / or the frame and to supplement and / or remove the bonding glue.

[0077] The embodiment of the present application also provides a display screen, which is manufactured by the above-mentioned display screen bonding method.

[0078] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A display screen bonding method, characterized in that: The following steps are involved: Applying adhesive to the display screen body and the frame respectively, wherein the adhesive on the frame is matched with the adhesive on the display screen body; Place the display screen body and the frame in a dust-free box, obtain the vertical distance between the display screen body and the frame, and gradually move the display screen toward the frame until they are in contact based on the vertical distance between the display screen body and the frame; Marking glue is set at the four corners of the frame, and the spreading angle and spreading duration of each marking glue during the process of the display screen moving in the direction close to the frame to the bonding process are obtained; specifically including: Inverted triangle-shaped marking glue is arranged at the four corners of the frame, wherein the sharp corners of the marking glue are arranged toward the four corners of the frame; A marking glue displacement traction auxiliary glue is pre-set at the four corners of the frame, wherein the traction auxiliary glue can attract the marking glue to move along a preset track; Slowly moving the display screen toward the frame until it fits with the frame; Real-time acquisition of the sharp-corner spreading angle and spreading duration of the marking glue set at the four corners of the frame on the preset track; Count and record the displacement distance of the tip corner of the marked glue within the same time interval; Based on the spreading angle of the marking glue, judging whether the vertical movement direction between the display screen body and the frame is stable, and if not, dynamically adjusting the position of the display screen body and / or the frame; Based on the spreading time of the marking glue, it is judged whether the bonding glue between the display screen body and the frame body flows smoothly. If it is not smooth, the bonding glue is supplemented and / or removed.

2. A display screen bonding method according to claim 1, characterized in that: The step of applying adhesive to the display screen body and the frame respectively, wherein the adhesive on the frame is matched with the adhesive on the display screen body, specifically includes: Place the frame under the display screen body; Apply a first bonding adhesive to the middle of the display screen, and apply a second bonding adhesive to the middle of the frame; Use an air gun to blow dust-free air toward the middle of the frame, so that the second bonding glue spreads around the frame to form a dam glue.

3. A display screen bonding method according to claim 2, characterized in that: The area of ​​the interval formed by the dam glue is the same as the area of ​​the first bonding glue.

4. A display screen bonding method according to claim 1, characterized in that: The step of placing the display screen body and the frame in a dust-free box and obtaining the vertical distance between the display screen body and the frame specifically includes: A first mounting bracket and a second mounting bracket are set up in a dust-free box, wherein the second mounting bracket is located below the first mounting bracket, and the first mounting bracket can move in a direction close to or away from the second mounting bracket based on an external force; Install the display screen body on the first mounting bracket, and install the frame on the second mounting bracket; The distance between the first mounting bracket and the second mounting bracket is acquired based on the infrared rangefinder.

5. A display screen bonding method according to claim 1, characterized in that: The step of providing inverted triangle-shaped marking glue at the four corners of the frame specifically includes: The sharp corners of the marking glue are arranged toward the four corners of the frame, and irreversible temperature-changing color powder is doped in the marking glue.

6. A display screen bonding method according to claim 5, characterized in that: The step of pre-arranging the marking glue displacement traction auxiliary glue at the four corners of the frame, wherein the traction auxiliary glue can attract the marking glue to move along the preset track, specifically includes: Linear traction auxiliary glue is coated on the four corners of the frame, wherein the concentration of the traction auxiliary glue is less than the concentration of the marking glue.

7. A display screen bonding method according to claim 6, characterized in that: After determining that the vertical moving direction between the display screen body and the frame is stable based on the spreading angle of the marking glue and that the bonding glue between the display screen body and the frame flows smoothly based on the spreading time of the marking glue, the following steps are also included: Placing the frame on a heating platform and heating it to a preset heating temperature so that the bonding glue, marking glue and traction auxiliary glue are cured to form an optical glue layer; The preset temperature exceeds the color changing temperature of the irreversible temperature-changing powder.

8. A display screen bonding device, applied to the display screen bonding method according to any one of claims 1 to 7, characterized in that: include: A coating module (1) is configured to apply bonding glue to the display screen body and the frame respectively; A driving module (2) is configured to gradually move the display screen in a direction close to the frame until it is in contact with the frame; An image acquisition module (3) is configured to obtain the spreading angle and spreading duration of each marking glue during the process of the display screen moving in a direction close to the frame body; A judgment module (4) is configured to judge whether the vertical movement direction between the display screen body and the frame is stable based on the spreading angle of the marking glue and whether the bonding glue flow between the display screen body and the frame is smooth based on the spreading time of the marking glue; The adjustment module (5) is configured to dynamically adjust the position of the display screen body and / or the frame body and to supplement and / or remove the bonding glue.

9. A display screen, characterized in that: The method for bonding a display screen according to any one of claims 1 to 7 is used.

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