Laminating jig for liquid crystal display screen
By using a double-pressure method on the upper and lower sides of the LCD screen bonding fixture, the problems of air bubbles and poor bonding during the LCD screen bonding process are solved, achieving a tighter and more uniform bonding, and improving product quality and reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN CHUANGFU DISPLAY TECHNOLOGY CO LTD
- Filing Date
- 2025-04-02
- Publication Date
- 2026-04-21
AI Technical Summary
Air bubbles and poor bonding are common problems during the lamination process of LCD screens.
A liquid crystal display screen bonding fixture was designed, which adopts a double-pressure method. By squeezing from below with an airbag and pressing from above, a tight fit between the liquid crystal display screen and the machine body is ensured. The expansion force of the airbag and the deformation properties of the plastic fixture are used to achieve uniform pressure.
It effectively reduces the generation of bubbles and voids, improves the connection and tightness between the LCD screen and the body, and enhances the overall quality and reliability of the product.
Smart Images

Figure CN224152791U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of display screen fixture technology, and in particular to a liquid crystal display screen bonding fixture. Background Technology
[0002] An LCD screen bonding fixture is an auxiliary tool used in the assembly process of an LCD screen, primarily for precisely bonding a touchscreen to the LCD screen. The working principle of the LCD screen bonding fixture is relatively simple yet highly effective.
[0003] In the bonding process, the LCD screen is first placed inside the fixture, then the touch screen is placed on top of the LCD screen, adhesive is applied, and then the touch screen and LCD screen are manually pressed together to form a complete display screen. However, this method only applies pressure from the top of the display screen, which can easily lead to air bubbles at the adhesive joint and poor bonding of the LCD screen. Therefore, a new LCD screen bonding fixture is proposed to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.
[0005] Therefore, one objective of this utility model is to provide a liquid crystal display screen bonding fixture to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.
[0006] To achieve the above objectives, one embodiment of the present invention provides a liquid crystal display screen bonding fixture, including a fixture, a support column, and mounting feet. The support column is fixedly connected to the four corners of the bottom surface of the fixture, and the bottom end of the support column is fixedly connected to the mounting feet with holes.
[0007] The fixture is a flat plate type, with an inner groove on the top surface and a plate groove on the top surface, the plate groove being located above the inner groove;
[0008] The fixture has corner grooves at the four corners of the plate groove and the inner groove, and a notch is provided in the middle of the edge of the plate groove and the inner groove;
[0009] The fixture has connectors fixedly connected to the four corners of its bottom surface, and a frame is fixedly connected to the bottom end of each connector.
[0010] An airbag is fixedly connected to the top of the frame, and the top of the airbag abuts against the bottom surface of the fixture.
[0011] An air inlet pipe and an air outlet pipe are fixedly connected to one side of the airbag, and valves are installed on both the air inlet pipe and the air outlet pipe.
[0012] The airbag is located above the edge of the inner groove.
[0013] Preferably, according to any of the above solutions, the fixture is made of plastic, and the fixture is bonded to the support column.
[0014] Adopting the above technical solution: This fixture is specifically used for the lamination of liquid crystal display screens.
[0015] In this fixture, the body of the display screen is snapped into the inner groove, and the inner groove is designed to exactly match the body.
[0016] The liquid crystal display screen is snapped into the board groove, and the board groove is designed to exactly match the liquid crystal display screen. The length and width of the board groove are slightly larger than those of the inner groove.
[0017] Preferably, according to any of the above solutions, the mounting feet are flat feet, and the upper part of the inner groove is connected to the board groove.
[0018] Adopting the above technical solution: In this fixture, corner grooves are provided at the four corners of the board groove and the inner groove, and gaps are provided in the middle of the edges of the board groove and the inner groove, which is convenient for taking the liquid crystal display screen and its body.
[0019] Preferably, according to any of the above solutions, the length and width of the inner groove are both smaller than the length and width of the board groove.
[0020] Preferably, according to any of the above solutions, reserved positions for adapting chips and circuit boards are provided on the bottom surface of the inner groove, and the joint is thermally melted and connected to the bottom surface of the fixture.
[0021] Adopting the above technical solution: This device can be divided into two parts. The first part is the fixture body, which is composed of a fixture, a support column, mounting feet, an inner groove, a board groove, a corner groove, and a gap.
[0022] The second part is the fastening part, which is composed of a joint, a frame, an airbag, an air inlet pipe, an air outlet pipe, and a valve.
[0023] Preferably, according to any of the above solutions, the top surface of the frame is bonded to the bottom surface of the airbag. The airbag is generally in a "mouth" shape, and the material of the airbag is rubber.
[0024] The core structure of this device, using the above technical solution, consists of: fixture, support column, mounting feet, connector, frame, airbag, air inlet pipe, air outlet pipe, and valve. The core advantages of this device are: an improvement on the original desktop flatbed fixture. The fixture is fixed to the desktop platform by mounting feet and elevated by support columns. Space is provided below the fixture for installing connectors, frames, and airbag structures. During LCD screen bonding, the machine body is located in the inner groove. A ring of adhesive is applied to the surface of the machine body near the edge. Then, the LCD screen is inserted into the groove, and pressed to ensure full adhesion between the LCD screen and the adhesive. Simultaneously, the air outlet valve is closed, and the air inlet pipe is opened, inflating the airbag and pushing it upwards against the fixture. The top of the airbag corresponds to the edge of the inner groove. The fixture is made of plastic and has a certain degree of deformation resistance. During LCD screen bonding, a double-pressure method is used—the airbag squeezes from below while the operator presses from above—ensuring a tighter and more secure bond between the LCD screen and the machine body. This strengthens the connection between the machine body and the LCD screen, helping to eliminate bonding problems caused by uneven local pressure and improving the overall quality and reliability of the product.
[0025] This dual-pressure method (airbag below + manual on top) effectively increases the contact pressure between the LCD screen and the body, ensuring a tight and uniform fit and reducing the generation of air bubbles and gaps.
[0026] Preferably, in any of the above solutions, the outer end of the air intake pipe is connected to an air pump.
[0027] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:
[0028] This LCD screen bonding fixture improves upon traditional desktop flat panel fixtures through the coordinated design of the fixture, support pillars, mounting feet, connectors, frame, airbag, air inlet pipe, air outlet pipe, and valves. The fixture is fixed to the desktop platform by the mounting feet and elevated by the support pillars. Space beneath the fixture is provided for mounting the connector, frame, and airbag structure. During LCD screen bonding, the machine body is positioned within the inner groove. A ring of adhesive is applied to the machine body surface near the edge, and then the LCD screen is inserted into the corresponding groove position. Pressing is then applied to ensure full adhesion between the LCD screen and the adhesive. Simultaneously, the exhaust valve is closed and the intake pipe is opened, allowing gas to be injected into the airbag. The airbag inflates and pushes against the fixture. The upper part of the airbag corresponds to the edge of the inner groove. The fixture is made of plastic and has a certain degree of deformation performance. When bonding the LCD screen, a double-pressure method is adopted, that is, the airbag squeezes from below while the operator presses from above. This allows the LCD screen to bond more tightly and securely to the machine body, making the connection between the machine body and the LCD screen more robust. This helps to eliminate bonding problems caused by uneven local pressure, thereby improving the overall quality and reliability of the product.
[0029] This dual-pressure method (airbag below + manual on top) effectively increases the contact pressure between the LCD screen and the body, ensuring a tight and uniform fit and reducing the generation of air bubbles and gaps.
[0030] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0031] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0032] Figure 1 This is a first-view structural schematic diagram of the present invention;
[0033] Figure 2 This is a structural schematic diagram of the present invention from a second perspective;
[0034] Figure 3 This is a structural schematic diagram of the present invention from a third-view perspective;
[0035] Figure 4 This utility model Figure 3 A magnified structural diagram of point A in the middle.
[0036] In the diagram: 1-Jig, 2-Support, 3-Mounting foot, 4-Inner groove, 5-Plate groove, 6-Corner groove, 7-Notch, 8-Connector, 9-Frame, 10-Airbag, 11-Inlet pipe, 12-Outlet pipe, 13-Valve. Detailed Implementation
[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0039] like Figure 1-4As shown in the figure, this liquid crystal display bonding fixture includes a fixture 1, support columns 2, and mounting feet 3. At the four corners of the bottom surface of the fixture 1, support columns 2 are fixedly connected, and at the bottom ends of the support columns 2, perforated mounting feet 3 are fixedly connected;
[0040] The fixture 1 is of a flat plate type. An inner groove 4 is provided on the top surface of the fixture 1, and a plate groove 5 is provided on the top surface of the fixture 1. The plate groove 5 is located above the inner groove 4;
[0041] At the four corners of the fixture 1 at the plate groove 5 and the inner groove 4, corner grooves 6 are provided, and at the middle parts of the edges of the plate groove 5 and the inner groove 4, gaps 7 are provided;
[0042] At the four corners of the bottom surface of the fixture 1, connectors 8 are fixedly connected, and at the bottom ends of the connectors 8, a frame 9 is fixedly connected;
[0043] At the top of the frame 9, an airbag 10 is fixedly connected, and the top of the airbag 10 abuts against the bottom surface of the fixture 1;
[0044] On one side of the airbag 10, an air inlet pipe 11 and an air outlet pipe 12 are fixedly connected, and valves 13 are installed on both the air inlet pipe 11 and the air outlet pipe 12;
[0045] Above the airbag 10, corresponding to the edge of the inner groove 4.
[0046] Example 1: The material of the fixture 1 is plastic, and the fixture 1 is bonded to the support columns 2. This fixture 1 is dedicated to the bonding of liquid crystal displays.
[0047] In this fixture 1, the body of the display screen is snapped into the inner groove 4, and the inner groove 4 is designed to just match the body,
[0048] The liquid crystal display screen is snapped into the plate groove 5, and the plate groove 5 is designed to just match the liquid crystal display screen. The length and width of the plate groove 5 are slightly larger than those of the inner groove 4. The mounting feet 3 are flat feet, and the inner groove 4 is connected to the plate groove 5 above.
[0049] Example 2: In this fixture 1, corner grooves 6 are provided at the four corners of the plate groove 5 and the inner groove 4, and gaps 7 are provided at the middle parts of the edges of the plate groove 5 and the inner groove 4, which is convenient for taking the liquid crystal display screen and its body. The length and width of the inner groove 4 are both smaller than the length and width of the plate groove 5. Reserved positions for adapting chips and circuit boards are provided on the bottom surface of the inner groove 4, and the connector 8 is heat-melted and connected to the bottom surface of the fixture 1. This device can be divided into two parts. The first part is the fixture 1 body, which consists of the fixture 1, support columns 2, mounting feet 3, inner groove 4, plate groove 5, corner grooves 6, and gaps 7;
[0050] The second part is the fastening part, which consists of the top surface of the connecting frame 9 being bonded to the bottom surface of the airbag 10. The airbag 10 is in an overall "mouth" shape, and the material of the airbag 10 is rubber. It consists of the connector 8, frame 9, airbag 10, air inlet pipe 11, air outlet pipe 12, and valve 13. The outer end of the air inlet pipe 11 is connected to an air pump.
[0051] The working principle of this utility model is as follows:
[0052] Fixture 1 is fixed to the desktop platform by mounting feet 3. Fixture 1 is raised by support pillar 2. There is space under fixture 1 for installing connector 8, frame 9, and airbag 10. When the LCD screen is bonded, the machine body is located in the inner groove 4. A ring of adhesive is applied to the surface of the machine body near the edge. Then, the LCD screen is inserted into the corresponding position of the plate groove 5 and pressed to make the LCD screen fully bonded to the adhesive. At the same time, the air outlet pipe 12 valve 13 is closed and the air inlet pipe 11 is opened to inflate the airbag 10. The airbag 10 expands and pushes up the fixture 1. The top of the airbag 10 corresponds to the edge of the inner groove 4. Fixture 1 is made of plastic and has a certain deformation performance. When the LCD screen is bonded, a double pressure method is adopted, that is, the airbag 10 is squeezed from below and the manual presses from above, which can make the LCD screen bonded to the machine body more tightly and securely.
[0053] After the LCD screen is attached to the body, the attached product is removed at notch 7.
[0054] Compared with the prior art, the present invention has the following advantages:
[0055] This LCD screen bonding fixture improves upon the original desktop flat panel fixture 1 through the coordinated arrangement of fixture 1, support column 2, mounting feet 3, connector 8, frame 9, airbag 10, air inlet pipe 11, air outlet pipe 12, and valve 13. Fixture 1 is fixed to the desktop platform by mounting feet 3 and raised by support column 2. There is space below fixture 1 for installing connector 8, frame 9, and airbag 10. During LCD screen bonding, the machine body is located in the inner groove 4, and a ring of adhesive is applied to the surface of the machine body near the edge. Then, the LCD screen is inserted into the corresponding position of the plate groove 5 and pressed to fill the adhesive between the LCD screen and the groove. During the bonding process, the air outlet 12 valve 13 is closed, and the air inlet 11 is opened, allowing gas to be injected into the airbag 10. The airbag 10 inflates and pushes against the fixture 1. The upper part of the airbag 10 corresponds to the edge of the inner groove 4. The fixture 1 is made of plastic and has certain deformation properties. When bonding the LCD screen, a double-pressure method is adopted, that is, the airbag 10 is squeezed from below, and the operator presses from above. This makes the LCD screen bonded to the machine body more tightly and securely, and the connection between the machine body and the LCD screen more firmly. This helps to eliminate bonding problems caused by uneven local pressure and improves the overall quality and reliability of the product.
[0056] This dual-pressure method (airbag below + manual on top) effectively increases the contact pressure between the LCD screen and the body, ensuring a tight and uniform fit and reducing the generation of air bubbles and gaps.
Claims
1. A liquid crystal display panel attaching jig characterized by comprising: It includes a jig (1), a support column (2), and a mounting foot (3). At the four corners of the bottom surface of the jig (1), the support columns (2) are fixedly connected. At the bottom ends of the support columns (2), the perforated mounting feet (3) are fixedly connected. The jig (1) is of a flat plate type. An inner groove (4) is formed on the top surface of the jig (1), and a plate groove (5) is formed on the top surface of the jig (1). The plate groove (5) is located above the inner groove (4). At the four corners of the jig (1) where the plate groove (5) and the inner groove (4) are located, corner grooves (6) are formed. At the middle of the edges of the plate groove (5) and the inner groove (4), gaps (7) are formed. At the four corners of the bottom surface of the jig (1), connectors (8) are fixedly connected. At the bottom ends of the connectors (8), a frame (9) is fixedly connected. At the top of the frame (9), an airbag (10) is fixedly connected. The top of the airbag (10) abuts against the bottom surface of the jig (1). On one side of the airbag (10), an air inlet pipe (11) and an air outlet pipe (12) are fixedly connected. Valves (13) are installed on both the air inlet pipe (11) and the air outlet pipe (12). Above the airbag (10) corresponds to the edge of the inner groove (4).
2. The liquid crystal display screen attaching jig according to claim 1, wherein: The material of the jig (1) is plastic, and the jig (1) is bonded to the support column (2).
3. The liquid crystal display screen attaching jig according to claim 2, wherein: The mounting foot (3) is a flat foot, and the upper part of the inner groove (4) is connected to the plate groove (5).
4. The liquid crystal display screen attaching jig according to claim 3, wherein: The length and width of the inner groove (4) are both smaller than the length and width of the plate groove (5).
5. The liquid crystal display screen attaching jig according to claim 4, wherein: On the bottom surface of the inner groove (4), reserved positions for adapting to chips and circuit boards are provided. The connector (8) is heat-melted and connected to the bottom surface of the jig (1).
6. The liquid crystal display panel attaching jig according to claim 5, wherein: The top surface of the frame (9) is bonded to the bottom surface of the airbag (10). The airbag (10) is integrally in a "mouth" shape, and the material of the airbag (10) is rubber.
7. The liquid crystal display screen attaching jig according to claim 6, wherein: The outer end of the air inlet pipe (11) is connected to an air pump.