Fitting method of flexible OLED screen and curved surface cover plate

Abstract

The invention discloses a fitting method of a flexible OLED screen and a curved surface cover plate, and relates to the technical field of OLED screens, and the fitting method comprises the following steps: equipment preparation, equipment assembly, material preparation, equipment installation, pressing fitting, quality detection, edge shearing, and fitting repair. According to the fitting method for the flexible OLED screen and the curved-surface cover plate, the pressing curved-surface male die is arranged to be the same as the surface of the curved-surface steel plate and is matched with the lower die at the bottom, so that the OLED screen can be molded, the OLED screen is completely matched with the surface of the curved-surface steel plate, and therefore tight fitting of the flexible OLED screen and the curved-surface cover plate is achieved; the flexible OLED screen and the curved surface cover plate are tightly attached through the lower base table, the fixing bolts, the lower mold and the upper mold of the turnover machine, the whole mode is easy to operate, the requirement for small order demand of a single product can be met, the manufacturing cost is low, the lower mold can be detached from the lower base table and is convenient to replace, and the method is low in operation difficulty, low in technical requirement and suitable for large-scale popularization and application. Installation and operation are convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of OLED screens, and in particular to a method for bonding a flexible OLED screen to a curved cover plate. Background Art

[0002] OLED, also known as organic electric laser display and organic light-emitting semiconductor. OLED is a current-type organic light-emitting device. It is a phenomenon that emits light through the injection and recombination of carriers. The luminous intensity is proportional to the injected current. Under the action of the electric field, the holes generated by the anode and the electrons generated by the cathode will move, inject into the hole transport layer and the electron transport layer respectively, and migrate to the light-emitting layer. When the two meet in the light-emitting layer, energy excitons are generated, which excite the light-emitting molecules and finally produce visible light.

[0003] With the development of display technology, more and more related products are entering our lives. In addition to the handheld products such as mobile phones and tablets that are indispensable in daily life, wearable products such as smart watches, heart rate monitors and other portable small products are also gradually entering our lives. This kind of product has the advantages of being small, light and comfortable to wear, exquisite and fashionable appearance, bright screen color, wear resistance, drop resistance and power saving.

[0004] In order to meet the above needs, a flexible and bendable OLED screen is increasingly being used. This product has the advantages of being bendable, having a stylish curved surface, supporting multi-color display, and saving power. At the same time, in order to meet the needs of wear resistance and drop resistance, it is necessary to use OCA to bond with a curved tempered cover to achieve this goal. Traditional OCA bonding processes and equipment can only perform flat-to-flat bonding, which cannot meet the curved bonding requirements of this type of product; the curved bonding equipment is relatively expensive due to its special customization. If the demand for a single product order is small, the equipment cost cannot be met. Summary of the invention

[0005] The main purpose of the present invention is to provide a method for bonding a flexible OLED screen to a curved cover plate, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A method for bonding a flexible OLED screen to a curved cover plate, the bonding method comprising the following steps:

[0008] The first step is equipment preparation. Customize a curved load-bearing mold that matches the curved cover plate according to specified requirements, customize a pre-stressing module with the same curvature as the surface of the curved steel plate, inspect the quality of the curved load-bearing mold and the pre-stressing module, and remove inferior products with cracks and wrinkles.

[0009] The second step is to assemble the equipment. Place the curved surface bearing mold that has passed the inspection into the lower moving end of the customized flip machine, and install the fixed tooling on the upper moving end of the customized flip machine.

[0010] The third step is material preparation. Prepare an OLED screen of appropriate size and cut the edges of the OLED screen to fit the size of the curved surface bearing mold.

[0011] The fourth step is equipment installation, which involves installing the pre-pressing module on the tooling on top of the customized flap machine.

[0012] The fifth step is to press and fit. Place the cut OLED screen into the curved surface bearing mold and start the customized flip machine to press and shape it.

[0013] The sixth step is quality inspection. Take out the finalized flexible OLED screen and use professional testing equipment to check whether the flexible OLED screen can be used normally.

[0014] The seventh step is edge cutting. The edges of the flexible OLED screen are cut to fit the size of the curved steel plate.

[0015] The eighth step is to fit and repair. Fit the edge of the flexible OLED screen to the designated area of ​​the curved steel plate, and then repair the area with white edges on the side seams.

[0016] Preferably, in the first step, a hardness testing instrument is used to analyze the bearing mold and the pre-loading module, and visual observation is performed to confirm that there are no scratches on the surface. A high-precision measuring instrument is used to detect that the dimensions of the bearing mold and the pre-loading module are accurate.

[0017] Preferably, the customized tooling on the mobile end of the second step customized flip machine is compatible with the pre-pressing module and the curved steel plate.

[0018] Preferably, in the third step, a laser cutting device is used to cut the OLED screen.

[0019] Preferably, in the fourth step, after the pre-pressing module is installed on the tooling on the top of the customized flap machine, the customized flap machine needs to be operated to perform a simulation experiment to ensure that the positions correspond and are adapted.

[0020] Preferably, the pressing and shaping time in the fifth step is at least 5 minutes.

[0021] Preferably, in the seventh step, a laser shearing machine is used to shear the edges of the flexible OLED screen.

[0022] Preferably, in the eighth step, special sealing glue is used to fill the gap.

[0023] Preferably, it comprises a lower base of a turning machine, wherein the lower base of the turning machine is provided with two slide rails, a lower mold is slidably installed on the two slide rails, a fixing bolt is threadedly installed on the lower base of the turning machine near the slide rails, a slot is provided on the upper mold, and a pressing curved surface punch is installed on the slot.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. By setting the pressing curved surface convex mold to be the same as the surface of the curved steel plate, and matching it with the lower mold at the bottom, the OLED screen can be shaped so that the OLED screen is fully adapted to the surface of the curved steel plate, thereby achieving a close fit between the flexible OLED screen and the curved cover plate.

[0026] 2. By setting the lower base, fixing bolt, lower mold and upper mold of the flip machine, the flexible OLED screen and the curved cover can be tightly fitted. The whole method is simple to operate, can meet the requirements of small demand for single product orders, and has low production cost.

[0027] 3. By setting the lower mold, it can be disassembled on the lower base, which is convenient for replacement. This method has low operating difficulty, low technical requirements, and easy installation and operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a flow chart of a method for bonding a flexible OLED screen to a curved cover plate according to the present invention;

[0029] Figure 2 It is a three-dimensional structural schematic diagram of the lower base and the lower mold of the turning machine of the present invention;

[0030] Figure 3 It is a schematic diagram of the three-dimensional structure of the curved surface pressing punch of the present invention.

[0031] In the figure: 1. Lower base of the turning machine; 2. Fixing bolt; 3. Slide rail; 4. Lower mold; 5. Upper mold; 6. Pressing curved surface punch. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] Example 1

[0034] like Figure 1-3 As shown, a method for bonding a flexible OLED screen to a curved cover plate comprises the following steps:

[0035] The first step is equipment preparation. Customize a curved load-bearing mold that matches the curved cover plate according to specified requirements, customize a pre-stressing module with the same curvature as the surface of the curved steel plate, inspect the quality of the curved load-bearing mold and pre-stressing module, and remove inferior products with cracks and wrinkles.

[0036] The second step is to assemble the equipment. Place the curved surface bearing mold that has passed the inspection into the lower moving end of the customized flip machine, and install the fixed tooling on the upper moving end of the customized flip machine.

[0037] The third step is material preparation. Prepare an OLED screen of appropriate size and cut the edges of the OLED screen to fit the size of the curved surface bearing mold.

[0038] The fourth step is equipment installation, which involves installing the pre-pressing module on the tooling on top of the customized flap machine.

[0039] The fifth step is to press and fit. Place the cut OLED screen into the curved surface bearing mold and start the customized flip machine to press and shape it.

[0040] The sixth step is quality inspection. Take out the finalized flexible OLED screen and use professional testing equipment to check whether the flexible OLED screen can be used normally.

[0041] The seventh step is edge cutting. The edges of the flexible OLED screen are cut to fit the size of the curved steel plate.

[0042] The eighth step is to fit and repair. Fit the edge of the flexible OLED screen to the designated area of ​​the curved steel plate, and then repair the area with white edges on the side seams.

[0043] In this embodiment, in the first step, a hardness testing instrument is used to analyze the bearing mold and the pre-stressing module, and visual observation shows that there are no scratches on the surface. A high-precision measuring instrument is used to detect that the sizes of the bearing mold and the pre-stressing module are accurate; in the second step, the customized tooling on the mobile end of the customized flip machine is compatible with the pre-stressing module and the curved steel plate; in the third step, a laser shearing device is used to shear the OLED screen; in the fourth step, after the pre-stressing module is installed on the tooling on the top of the customized flip machine, the customized flip machine needs to be operated to perform a simulation experiment to ensure that the positions correspond and are compatible; in the fifth step, the pressing and shaping time is 5 minutes; in the seventh step, a laser shearing machine is used to shear the edges of the flexible OLED screen; in the eighth step, a special sealing glue is used to fill the gap.

[0044] Specifically, by setting the pressing curved surface punch 6 to be the same as the surface of the curved steel plate, and matching it with the lower mold 4 at the bottom, the OLED screen can be shaped so that the OLED screen is fully adapted to the surface of the curved steel plate, thereby achieving a tight fit between the flexible OLED screen and the curved cover plate, and setting the lower base 1, fixing bolt 2, lower mold 4 and upper mold 5 of the turning machine to achieve a tight fit between the flexible OLED screen and the curved cover plate. The whole method is simple to operate, can meet the requirements of a small order quantity of a single product, and has a low production cost.

[0045] In this embodiment, the turning machine includes a lower base 1 and 5, wherein the lower base 1 of the turning machine is provided with two slide rails 3, and lower molds 4 are slidably installed on the two slide rails 3. A fixing bolt 2 is threadedly installed on the lower base 1 of the turning machine near the slide rails 3, and a slot is provided on the upper mold 5, and a pressing curved surface punch is installed on the slot.

[0046] Specifically, by setting the lower mold 4, it can be disassembled on the lower base 1 of the turning machine, which is convenient for replacement. This method has low operating difficulty, low technical requirements, and convenient installation and operation.

[0047] The above pressing and shaping time is 5 minutes.

[0048] Example 2

[0049] like Figure 1-3 As shown, a method for bonding a flexible OLED screen to a curved cover plate comprises the following steps:

[0050] The first step is equipment preparation. Customize a curved load-bearing mold that matches the curved cover plate according to specified requirements, customize a pre-stressing module with the same curvature as the surface of the curved steel plate, inspect the quality of the curved load-bearing mold and pre-stressing module, and remove inferior products with cracks and wrinkles.

[0051] The second step is to assemble the equipment. Place the curved surface bearing mold that has passed the inspection into the lower moving end of the customized flip machine, and install the fixed tooling on the upper moving end of the customized flip machine.

[0052] The third step is material preparation. Prepare an OLED screen of appropriate size and cut the edges of the OLED screen to fit the size of the curved surface bearing mold.

[0053] The fourth step is equipment installation, which involves installing the pre-pressing module on the tooling on top of the customized flap machine.

[0054] The fifth step is to press and fit. Place the cut OLED screen into the curved surface bearing mold and start the customized flip machine to press and shape it.

[0055] The sixth step is quality inspection. Take out the finalized flexible OLED screen and use professional testing equipment to check whether the flexible OLED screen can be used normally.

[0056] The seventh step is edge cutting. The edges of the flexible OLED screen are cut to fit the size of the curved steel plate.

[0057] The eighth step is to fit and repair. Fit the edge of the flexible OLED screen to the designated area of ​​the curved steel plate, and then repair the area with white edges on the side seams.

[0058] In this embodiment, in the first step, a hardness testing instrument is used to analyze the bearing mold and the pre-stressing module, and visual observation shows that there are no scratches on the surface. A high-precision measuring instrument is used to detect that the sizes of the bearing mold and the pre-stressing module are accurate; in the second step, the customized tooling on the mobile end of the customized flip machine is compatible with the pre-stressing module and the curved steel plate; in the third step, a laser shearing device is used to shear the OLED screen; in the fourth step, after the pre-stressing module is installed on the tooling on the top of the customized flip machine, the customized flip machine needs to be operated to perform a simulation experiment to ensure that the positions correspond and are compatible; in the fifth step, the pressing and shaping time is 8 minutes; in the seventh step, a laser shearing machine is used to shear the edges of the flexible OLED screen; in the eighth step, a special sealing glue is used to fill the gap.

[0059] Specifically, by setting the pressing curved surface punch 6 to be the same as the surface of the curved steel plate, and matching it with the lower mold 4 at the bottom, the OLED screen can be shaped so that the OLED screen is fully adapted to the surface of the curved steel plate, thereby achieving a tight fit between the flexible OLED screen and the curved cover plate, and setting the lower base 1, fixing bolt 2, lower mold 4 and upper mold 5 of the turning machine to achieve a tight fit between the flexible OLED screen and the curved cover plate. The whole method is simple to operate, can meet the requirements of a small order quantity of a single product, and has a low production cost.

[0060] In this embodiment, the turning machine includes a lower base 1 and 5, wherein the lower base 1 of the turning machine is provided with two slide rails 3, and lower molds 4 are slidably installed on the two slide rails 3. A fixing bolt 2 is threadedly installed on the lower base 1 of the turning machine near the slide rails 3, and a slot is provided on the upper mold 5, and a pressing curved surface punch is installed on the slot.

[0061] Specifically, by setting the lower mold 4, it can be disassembled on the lower base 1 of the turning machine, which is convenient for replacement. This method has low operating difficulty, low technical requirements, and convenient installation and operation.

[0062] The above pressing and shaping time is 8 minutes.

[0063] Example 3

[0064] like Figure 1-3 As shown, a method for bonding a flexible OLED screen to a curved cover plate comprises the following steps:

[0065] The first step is equipment preparation. Customize a curved load-bearing mold that matches the curved cover plate according to specified requirements, customize a pre-stressing module with the same curvature as the surface of the curved steel plate, inspect the quality of the curved load-bearing mold and pre-stressing module, and remove inferior products with cracks and wrinkles.

[0066] The second step is to assemble the equipment. Place the curved surface bearing mold that has passed the inspection into the lower moving end of the customized flip machine, and install the fixed tooling on the upper moving end of the customized flip machine.

[0067] The third step is material preparation. Prepare an OLED screen of appropriate size and cut the edges of the OLED screen to fit the size of the curved surface bearing mold.

[0068] The fourth step is equipment installation, which involves installing the pre-pressing module on the tooling on top of the customized flap machine.

[0069] The fifth step is to press and fit. Place the cut OLED screen into the curved surface bearing mold and start the customized flip machine to press and shape it.

[0070] The sixth step is quality inspection. Take out the finalized flexible OLED screen and use professional testing equipment to check whether the flexible OLED screen can be used normally.

[0071] The seventh step is edge cutting. The edges of the flexible OLED screen are cut to fit the size of the curved steel plate.

[0072] The eighth step is to fit and repair. Fit the edge of the flexible OLED screen to the designated area of ​​the curved steel plate, and then repair the area with white edges on the side seams.

[0073] In this embodiment, in the first step, a hardness testing instrument is used to analyze the bearing mold and the pre-stressing module, and visual observation shows that there are no scratches on the surface. A high-precision measuring instrument is used to detect that the sizes of the bearing mold and the pre-stressing module are accurate; in the second step, the customized tooling on the mobile end of the customized flip machine is compatible with the pre-stressing module and the curved steel plate; in the third step, a laser shearing device is used to shear the OLED screen; in the fourth step, after the pre-stressing module is installed on the tooling on the top of the customized flip machine, the customized flip machine needs to be operated to perform a simulation experiment to ensure that the positions correspond and are compatible; in the fifth step, the pressing and shaping time is 10 minutes; in the seventh step, a laser shearing machine is used to shear the edges of the flexible OLED screen; in the eighth step, a special sealing glue is used to fill the gap.

[0074] Specifically, by setting the pressing curved surface punch 6 to be the same as the surface of the curved steel plate, and matching it with the lower mold 4 at the bottom, the OLED screen can be shaped so that the OLED screen is fully adapted to the surface of the curved steel plate, thereby achieving a tight fit between the flexible OLED screen and the curved cover plate, and setting the lower base 1, fixing bolt 2, lower mold 4 and upper mold 5 of the turning machine to achieve a tight fit between the flexible OLED screen and the curved cover plate. The whole method is simple to operate, can meet the requirements of a small order quantity of a single product, and has a low production cost.

[0075] In this embodiment, the turning machine includes a lower base 1 and 5, wherein the lower base 1 of the turning machine is provided with two slide rails 3, and lower molds 4 are slidably installed on the two slide rails 3. A fixing bolt 2 is threadedly installed on the lower base 1 of the turning machine near the slide rails 3, and a slot is provided on the upper mold 5, and a pressing curved surface punch is installed on the slot.

[0076] Specifically, by setting the lower mold 4, it can be disassembled on the lower base 1 of the turning machine, which is convenient for replacement. This method has low operating difficulty, low technical requirements, and convenient installation and operation.

[0077] The above pressing and shaping time is 10 minutes.

[0078] Working principle: In the present invention, the lower base 1 and the upper mold 5 of the turning machine are respectively installed on the upper and lower ends of the customized turning machine, and the lower mold 4 is a customized curved surface bearing mold. The slot on the upper mold 5 is adapted to the pressing curved surface punch 6 and the curved cover plate, and can be replaced. By setting the pressing curved surface punch 6 to be the same as the surface of the curved steel plate, and matching the lower mold 4 at the bottom, the OLED screen can be shaped so that the OLED screen is fully adapted to the surface of the curved steel plate, thereby achieving a tight fit between the flexible OLED screen and the curved cover plate. By setting the lower base 1 of the turning machine, the fixing bolt 2, the lower mold 4 and the upper mold 5, the flexible OLED screen and the curved cover plate can be tightly fitted. The whole method is simple to operate, can meet the requirements of a small order quantity of a single product, and has a low production cost. By setting the lower mold 4, it can be disassembled on the lower base 1 of the turning machine for easy replacement. The method has low operating difficulty, low technical requirements, and convenient installation and operation.

[0079] The circuits, electronic components and control modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0080] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for bonding a flexible OLED screen to a curved cover plate, characterized in that: The bonding method comprises the following steps: The first step is equipment preparation. Customize the curved bearing mold that matches the curved cover plate according to the specified requirements, customize the pre-pressing module with the same curvature as the curved steel plate surface, and inspect the quality of the curved bearing mold and pre-pressing module to eliminate cracked and wrinkled inferior products. The second step is equipment assembly. The qualified curved surface bearing mold is placed into the lower moving end of the customized flip machine, and the fixed tooling is installed on the upper moving end of the customized flip machine. The third step is material preparation. Prepare an OLED screen of appropriate size and cut the edge of the OLED screen to fit the size of the curved surface bearing mold. The fourth step is equipment installation, installing the pre-pressing module on the tooling on the top of the customized flap machine; The fifth step is pressing and fitting. Place the cut OLED screen into the curved surface bearing mold and start the customized flip machine to press and shape. The sixth step is quality inspection. Take out the finalized flexible OLED screen and use professional testing equipment to test whether the flexible OLED screen can be used normally. Step 7: Edge cutting: Cut the edges of the flexible OLED screen to make it fit the size of the curved steel plate. The eighth step is to fit and repair. Fit the edge of the flexible OLED screen to the designated area of ​​the curved steel plate, and then repair the area with white edges on the side seams.

2. The method for bonding a flexible OLED screen to a curved cover plate according to claim 1, characterized in that: In the first step, the shaft uses a hardness testing instrument to analyze the load-bearing mold and the pre-loading module. Visually observe that there are no scratches on the surface, and use high-precision measuring instruments to detect the accuracy of the dimensions of the load-bearing mold and the pre-loading module.

3. The method for bonding a flexible OLED screen to a curved cover plate according to claim 1, characterized in that: The second step is to customize the customized tooling on the mobile end of the flip machine to match the pre-pressing module and curved steel plate.

4. The method for bonding a flexible OLED screen to a curved cover plate according to claim 1, characterized in that: In the third step, laser cutting equipment is used to cut the OLED screen.

5. The method for bonding a flexible OLED screen to a curved cover plate according to claim 1, characterized in that: In the fourth step, after the pre-pressing module is installed on the tooling on the top of the customized flap machine, the customized flap machine needs to be operated to perform a simulation experiment to ensure that the positions correspond and are adapted.

6. The method for bonding a flexible OLED screen to a curved cover plate according to claim 1, characterized in that: In the fifth step, the pressing and shaping time is at least 5 minutes.

7. The method for bonding a flexible OLED screen to a curved cover plate according to claim 1, characterized in that: In the seventh step, a laser shearing machine is used to shear the edges of the flexible OLED screen.

8. The method for bonding a flexible OLED screen to a curved cover plate according to claim 1, characterized in that: In the eighth step, special sealing glue is used to fill the gaps.

9. The method for bonding a flexible OLED screen to a curved cover plate according to claim 1, characterized in that: The invention comprises a lower base (1) and (5) of a turning machine, wherein the lower base (1) of the turning machine is provided with two slide rails (3), and lower molds (4) are slidably mounted on the two slide rails (3); a fixing bolt (2) is threadedly mounted on the lower base (1) of the turning machine near the slide rails (3); and a slot is provided on the upper mold (5), and a pressing curved surface punch is mounted on the slot.

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