OLED flexible glass substrate processing device and method based on LTPO process

Abstract

The invention relates to the technical field of glass substrate processing, in particular to an OLED flexible glass substrate processing device and method based on an LTPO process. The device comprises a machine box, and an extension box is installed on one side of the machine box; the grinding structure is arranged on one side of the case; the cooling structure is arranged on one side of the extension box; the auxiliary structure is arranged on the side, close to the grinding structure, of the case; wherein the grinding structure comprises a grinding assembly, a feeding assembly and a rolling brush assembly, the grinding assembly comprises a grinding motor, the grinding motor is installed on one side of the machine box, the output end of the grinding motor is fixedly connected with a grinding wheel, the feeding assembly comprises an assembling frame, and the assembling frame is fixedly connected with the side, away from the extending box, of the machine box; the upper surface of the assembly frame is fixedly connected with an assembly plate. The problem that glass edge particles are high due to the fact that glass powder falls off in the corrosive processes such as acid pickling in a panel factory and in the conveying process is solved.

Description

Technical Field

[0001] This application relates to the field of glass substrate processing technology, and in particular to an apparatus and method for processing OLED flexible glass substrates based on the LTPO process. Background Technology

[0002] LTPO stands for Low Temperature Polycrystalline Oxide. OLED displays based on LTPO process technology are the core carrier of modern information output. Rigid and flexible displays (foldable phones, curved TVs) with high resolution, high contrast, wide color gamut, and wide refresh rate range have become mainstream. The flexible display glass substrate for OLED based on LTPO process technology must meet comprehensive physical and chemical performance requirements such as high heat resistance, low thermal shrinkage, and high Young's modulus. Compared with traditional display substrate glass, its manufacturing difficulty is greatly increased, and it is recognized globally as the most difficult glass type to manufacture.

[0003] Prior art, such as the invention disclosed in CN103619537B, relates to a method for finishing the edges of glass materials, and more particularly to a grinding machine. A method for finishing the edges of a glass plate includes a first grinding step and a second polishing step using different grinding wheels. This method results in consistent edge quality after finishing and improved edge quality in terms of subsurface damage (SSD). This method can be advantageously used for finishing the edges of thin glass substrates used as substrates for display devices such as LCD displays.

[0004] In the existing technology for producing OLED flexible glass substrates using the overflow pull-down method, the molten glass material overflows and is pulled down to form a board, which is then cut into individual pieces by a cutting machine below the forming furnace and flows into subsequent processing steps.

[0005] The inventors discovered that, compared to traditional glass substrates, OLED flexible display glass substrates manufactured using the LTPO process are less prone to deformation during processing, ensuring dimensional stability. During processing, it is necessary to eliminate defects such as fine cracks and chip loss at the glass cutting edges, reducing the risk of breakage during downstream and customer process transfers. However, in existing technologies, the glass edge grinding width is relatively rough, and glass powder shedding during corrosive processes such as acid washing in panel factories and during transfer results in high glass edge particle counts. Therefore, a processing method is needed to improve the smoothness of the glass edge grinding and reduce the occurrence of glass edge particles. Summary of the Invention

[0006] One of the technical problems this application aims to solve is the issue of high particle size at the glass edges caused by glass powder shedding during corrosive processes such as pickling in panel factories and during transportation.

[0007] To address the aforementioned technical problems, this application provides an OLED flexible glass substrate processing apparatus based on LTPO process, comprising: a chassis, with an extension box mounted on one side of the chassis; a grinding structure, with a grinding structure provided on one side of the chassis; a cooling structure, with a cooling structure provided on one side of the extension box; and an auxiliary structure, with an auxiliary structure provided on the side of the chassis near the grinding structure. The grinding structure includes a grinding assembly, a feeding assembly, and a brush assembly. The grinding assembly includes a grinding motor mounted on one side of the chassis, with a grinding wheel fixedly connected to its output end. The feeding assembly includes an assembly frame fixedly connected to the side of the chassis away from the extension box, with an assembly plate fixedly connected to its upper surface. The assembly has two guide rails. An adjusting motor is fixedly connected to the upper surface of the assembly plate. A ball screw is fixedly connected to the output end of the adjusting motor. A support base is fixedly connected to the upper surface of the assembly plate. The support base is rotatably connected to the ball screw. A nut connector is threaded to the arc surface of the ball screw. A slide is fixedly connected to the upper surface of the nut connector. Three sliders are slidably connected to the upper surfaces of the two guide rails respectively. All six sliders are fixedly connected to the slide. The roller brush assembly includes an L-shaped connecting plate, which is fixedly connected to the slide. A fixed base is installed at the short arm end of the L-shaped connecting plate. A brush motor is mounted on the L-shaped connecting plate with the fixed base. A brush roller is fixedly connected to the output end of the brush motor. Several brush bristles are fixedly connected to the arc surface of the brush roller.

[0008] The effects achieved by the above components are as follows: by setting up a grinding structure, even if the OLED flexible display glass substrate of the LTPO process is ground extensively, the glass substrate will not be deformed or damaged, greatly improving the processing quality of the glass substrate edge. In addition, the roller brush bristles are made of nylon material, which can effectively clean the grinding surface without causing surface damage.

[0009] In some embodiments, a grinding cover is fixedly connected to the side of the chassis near the grinding motor, and a roller brush cover is fixedly connected to one side of the L-shaped connecting plate, with the roller brush cover abutting against the fixed base.

[0010] The effect achieved by the above components is that by adding a grinding guard and a roller brush guard, debris can be prevented from flying out directly during grinding and brushing.

[0011] In some embodiments, a guide cover is fixedly connected to the inner wall of the grinding cover, and the guide cover consists of four downwardly inclined base plates.

[0012] The effect achieved by the above components is that by adding a guide cover, debris can be guided and concentrated in the same area.

[0013] In some embodiments, three first triangular support plates are fixedly connected to the side of the assembly frame away from the chassis, and the long arm end and short arm end of the L-shaped connecting plate are jointly fixedly connected to a second triangular support plate.

[0014] The effects achieved by the above components are as follows: the stability of the assembly frame can be improved by the first triangular support plate, and the stability of the L-shaped connecting plate can be improved by the second triangular support plate.

[0015] In some embodiments, the cooling structure includes three mounting brackets, which are all fixedly connected to a water tank. A motor bracket is fixedly connected to one side of the extension box, and a water pump motor is fixedly connected to the upper surface of the motor bracket. The water inlet of the water pump motor is connected to the water tank, and the output end of the water pump motor is connected to a water supply pipe. The water supply pipe is connected to an annular pipe, and three cooling nozzles are installed on the arc surface of the annular pipe.

[0016] The effects achieved by the above components are as follows: by adding a cooling structure in conjunction with the wet grinding process, cooling, chip removal and protection of the processed surface are achieved. The cooling nozzle is installed near the grinding wheel and sprays water in a directional manner to the grinding point, which washes away glass fragments and abrasive residues in real time and cools the grinding wheel and glass substrate, avoiding thermal deformation of the glass substrate and ensuring edge dimensional accuracy.

[0017] In some embodiments, a pressure gauge is installed on the arc surface of the water supply pipe, and the pressure gauge is located between the water pump motor and the annular pipe.

[0018] The effect achieved by the above components is that water pressure can be detected by installing a pressure gauge, ensuring that the water pressure is stable within the process requirements.

[0019] In some embodiments, a triangular support frame is fixedly connected to the lower surface of the motor frame, and the triangular support frame is fixedly connected to the extension box.

[0020] The effect achieved by the above components is to increase the stability of the water pump motor and reduce the load on the pipeline by adding a triangular support frame.

[0021] In some embodiments, the auxiliary structure includes a collection component and an auxiliary component. The collection component includes an extension tube that is connected in communication with a guide cover. The auxiliary component includes a sliding frame that is fixedly connected to a chassis. Two sliding plates are slidably connected to the inner wall of the sliding frame. A debris collection box is fixedly connected to one side of the two sliding plates that are close to each other. A guide tube is fixedly connected to the bottom wall of the debris collection box. An assembly ring abuts against the upper surface of the guide tube. A connecting tube is fixedly connected to the inner wall of the assembly ring. A filter screen is fixedly connected to the inner wall of the connecting tube. The upper surface of the assembly ring abuts against the extension tube. A plurality of guide grooves are formed on the lower surface of the guide tube. Two abutting frames are fixedly connected to the bottom wall of the sliding frame. The two abutting frames abut against the debris collection box.

[0022] The effect achieved by the above components is that, by adding auxiliary structures, the debris generated during the grinding process can be collected and filtered, and the filtered water will also be collected by the debris collection box for reuse.

[0023] In some embodiments, a sealing ring is fitted on the lower surface of the extension tube, and an abutment pad is fixedly connected to the side of the abutment frame near the debris collection box. The sealing ring is a rubber ring, and the abutment pad is a rubber pad. Two rotating frames are fixedly connected to the lower surface of the debris collection box, and a rotating wheel is rotatably connected to the inner wall of the rotating frame. Two extension frames are fixedly connected to the side of the debris collection box away from the abutment frame, and a pull rod is rotatably connected to the debris collection box by means of the two extension frames.

[0024] The effects achieved by the above components are as follows: adding a rubber sealing ring can improve the sealing between the extension tube and the guide tube; the abutment gasket can reduce the wear between the abutment frame and the debris collection box; and adding components such as rollers and pull rods can make it easier to pull out the debris collection box.

[0025] In some embodiments, S1, the glass is first ground to achieve edge shaping using a 400-600 grit grinding wheel, preferably a 500 grit grinding wheel. A second grinding is performed to remove tiny pits on the surface of the grinding wheel using a 400-800 grit polishing wheel, preferably a 500 grit polishing wheel. Testing shows that the rotation direction of the polishing wheel is consistent with the edge grinding direction for better results. The polishing wheel is not a grinding wheel. A third grinding is performed to improve the smoothness of the grinding using a 500-1000 grit polishing wheel, preferably a 500 grit silicon carbide polishing wheel. Testing shows that the rotation direction of the polishing wheel is consistent with the edge grinding direction for better results. S2. Brush the surface of the grinding band to remove tiny particles adhering to the surface of the grinding band and further improve the smoothness of the grinding band. Use a brush roller to brush the surface. The brush roller is made of nylon, the brush hardness is 11A to 15A, and the bristle diameter is 0.2 to 0.3 mm. It is preferable to use a brush with a hardness of 11A and a bristle diameter of 0.2 mm. S3. During the multiple grinding processes of the glass by the grinding wheel, the water pump motor needs to be started. Water is sprayed from the cooling nozzle to cool and rinse the grinding wheel and glass. The debris is carried by the water flow to the guide cover and enters the guide pipe through the extension pipe. After passing through the filter screen, the debris is filtered and the cooling water enters the debris collection box.

[0026] The above technical solution involves first starting the grinding motor to rotate the grinding wheel and grinding the glass substrate multiple times. Then, as needed, the adjusting motor is started to rotate the ball screw and move the adjusting slide. During this process, the L-shaped connecting plate moves together to control the feed or retraction of the brush roller and control the contact force. By setting the grinding structure, even with extensive grinding, the OLED flexible display glass substrate produced by the LTPO process will not be deformed or damaged, greatly improving the processing quality of the glass substrate edges. Furthermore, the brush bristles are made of nylon, which can effectively clean the surface of the grinding area without causing surface damage.

[0027] The grinding method for the glass substrate in this invention is as follows: First, the glass is ground for the first time to achieve the purpose of edge shaping, using a 400-600 grit grinding wheel, preferably a 500 grit grinding wheel. Second, the glass is ground for the second time to remove tiny pits on the surface of the grinding wheel, using a 400-800 grit polishing wheel, preferably a 500 grit polishing wheel. Testing shows that the rotation direction of the polishing wheel is consistent with the edge grinding direction for better results. The polishing wheel is not a grinding wheel. The third step is to perform a third grinding on the glass to improve the smoothness of the grinding surface. Use a 500-1000 grit polishing wheel, preferably a 500 grit silicon carbide polishing wheel. Testing shows that the rotation direction of the polishing wheel is consistent with the grinding direction for better results. The fourth step is to brush the surface of the grinding surface to remove tiny particles adhering to it and further improve the smoothness. Use a brush roller to brush the surface. The brush bristles are made of nylon with a hardness of 11A to 15A and a bristle diameter of 0.2 to 0.3 mm. It is preferable to use a brush with a hardness of 11A and a bristle diameter of 0.2 mm.

[0028] During the multiple grinding processes of the glass substrate, the water pump motor needs to be started simultaneously. The water flows to the annular pipe and is sprayed out by three cooling nozzles to continuously rinse the grinding wheel and the glass substrate. The water pump motor can be turned off after grinding is completed. The pressure gauge can monitor the water pressure to ensure that the water pressure is stable within the process requirements. The triangular support frame increases the stability of the water pump motor and reduces the load on the pipeline. By adding a cooling structure in conjunction with the wet grinding process, cooling, chip removal, and protection of the processed surface are achieved. The cooling nozzles are installed near the grinding wheel and spray water in a directional manner to the grinding point to wash away glass fragments and abrasive residues in real time and cool the grinding wheel and the glass substrate to prevent thermal deformation of the glass substrate and ensure edge dimensional accuracy.

[0029] After the debris is washed down, the debris and water flow are guided to the extension pipe by the guide cover. As the debris and water flow pass through the guide pipe, they are filtered by the filter screen inside the guide pipe. The debris remains on the filter screen, while the water is guided to the debris collection box by the guide channel. After grinding is completed, the entire debris collection box can be pulled out with the pull rod to store the collected water for reuse. The addition of a rubber sealing ring can improve the sealing between the extension pipe and the guide pipe, and the abutment gasket can reduce the wear between the abutment frame and the debris collection box. The rollers and pull rods make it easier to pull out the debris collection box. By adding auxiliary structures, the debris generated during the grinding process can be collected and filtered, and the filtered water is also collected in the debris collection box for reuse. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment disclosed in this application; Figure 2 This is a schematic diagram of the grinding structure, cooling structure, and auxiliary structure disclosed in the embodiments of this application; Figure 3 This is disclosed in the embodiments of this application. Figure 2 A bottom view; Figure 4 This is disclosed in the embodiments of this application. Figure 2 A partial structural diagram; Figure 5 This is a schematic diagram of the feed assembly and brush assembly disclosed in the embodiments of this application; Figure 6 This is disclosed in the embodiments of this application. Figure 5 Schematic diagram of partial structural disassembly; Figure 7 This is a partial structural disassembly diagram of the feed assembly disclosed in an embodiment of this application; Figure 8 This is disclosed in the embodiments of this application. Figure 6 A partial structural disassembly diagram; Figure 9 This is disclosed in the embodiments of this application. Figure 3 A partial structural diagram; Figure 10 This is disclosed in the embodiments of this application. Figure 9 A partial structural diagram; Figure 11 This is a schematic diagram of the cooling structure disclosed in the embodiments of this application; Figure 12 This is a schematic diagram of the auxiliary structure disclosed in the embodiments of this application; Figure 13 This is disclosed in the embodiments of this application. Figure 12 A partial structural diagram; Figure 14 This is a partial structural disassembly diagram of the auxiliary component disclosed in an embodiment of this application; Figure 15 This is a partial structural diagram of the collection component disclosed in an embodiment of this application; Figure 16 This is disclosed in the embodiments of this application. Figure 13 Schematic diagram of partial structural disassembly.

[0032] Explanation of reference numerals in the attached drawings: 1. Chassis; 2. Grinding structure; 21. Grinding assembly; 211. Grinding motor; 212. Grinding wheel; 213. Grinding guard; 214. Guide base cover; 22. Feed assembly; 221. Assembly frame; 222. Assembly plate; 223. Guide rail; 224. Adjusting motor; 225. Ball screw; 226. Support base; 227. Nut connector; 228. Slide table; 229. Slider; 23. Brush assembly; 231. L-shaped connecting plate; 232. Fixed base; 233. Brush motor; 234. Brush roller; 235. Brush bristles; 236. Brush guard; 237. First triangular support plate; 238. Second triangular support plate; 3. Cooling structure; 31. Mounting bracket; 32. Water tank; 33. Motor bracket; 34. Water pump motor; 35. Water supply pipe; 36. Ring pipe; 37. Cooling nozzle; 38. Pressure gauge; 39. Triangular support frame; 4. Auxiliary structure; 41. Collection assembly; 411. Extension pipe; 412. Guide pipe; 413. Guide channel; 414. Assembly ring; 415. Connecting pipe; 416. Filter screen; 417. Debris collection box; 418. Rotating frame; 419. Rotating wheel; 42. Auxiliary assembly; 421. Sliding frame; 422. Sliding plate; 423. Abutment frame; 424. Abutment pad; 425. Extension frame; 426. Tie rod; 427. Sealing ring; 5. Extension box. Detailed Implementation

[0033] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application. This application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0034] These embodiments are provided to make the application thorough and complete, and to fully express the scope of the application to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​illustrated in these embodiments should be interpreted as merely exemplary and not as limiting.

[0035] It should be noted that, in the description of this application, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0036] Furthermore, the terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well.

[0037] It should also be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0038] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0039] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0040] Reference Figure 1 and Figure 2 As shown, the present invention provides a technical solution: an OLED flexible glass substrate processing apparatus and method based on LTPO process, including a chassis 1, and an extension box 5 installed on one side of the chassis 1; Grinding structure 2 is provided on one side of the casing 1; Cooling structure 3 is provided on one side of the extension box 5; Auxiliary structure 4 is provided on the side of the chassis 1 near the grinding structure 2.

[0041] The specific setup and function of grinding structure 2, cooling structure 3, and auxiliary structure 4 will be discussed below.

[0042] Reference Figures 2 to 10As shown in this embodiment: the grinding structure 2 includes a grinding assembly 21, a feeding assembly 22, and a roller brush assembly 23. The grinding assembly 21 includes a grinding motor 211, which is mounted on one side of the housing 1. A grinding wheel 212 is fixedly connected to the output end of the grinding motor 211. The feeding assembly 22 includes an assembly frame 221, which is fixedly connected to the side of the housing 1 away from the extension box 5. An assembly plate 222 is fixedly connected to the upper surface of the assembly frame 221. Two guide rails 223 are fixedly connected to the upper surface of the assembly plate 222. An adjustment mechanism is fixedly connected to the upper surface of the assembly plate 222. The motor 224 is adjusted, and a ball screw 225 is fixedly connected to the output end of the motor 224. A support base 226 is fixedly connected to the upper surface of the assembly plate 222. The support base 226 is rotatably connected to the ball screw 225. A nut connector 227 is threadedly connected to the arc surface of the ball screw 225. A slide table 228 is fixedly connected to the upper surface of the nut connector 227. Three sliders 229 are slidably connected to the upper surfaces of the two guide rails 223 respectively. All six sliders 229 are fixedly connected to the slide table 228. The roller brush assembly 23 includes an L-shaped connecting plate 231, which is fixed to the slide table 228. The L-shaped connecting plate 231 has a fixed base 232 installed on its short arm end. A brush motor 233 is mounted on the L-shaped connecting plate 231 via the fixed base 232. A brush roller 234 is fixedly connected to the output end of the brush motor 233. Several brush bristles 235 are fixedly connected to the arc surface of the brush roller 234. A grinding cover 213 is fixedly connected to the side of the housing 1 near the grinding motor 211. A brush cover 236 is fixedly connected to one side of the L-shaped connecting plate 231. The brush cover 236 abuts against the fixed base 232. The grinding cover 213 and the brush cover 236 prevent breakage during grinding and brushing. The chips will not fly out directly. The inner wall of the grinding cover 213 is fixedly connected to the guide cover 214, which consists of four downwardly inclined base plates. By adding the guide cover 214, the chips can be guided and concentrated in the same area. The side of the assembly frame 221 away from the chassis 1 is fixedly connected to three first triangular support plates 237. The long arm end and the short arm end of the L-shaped connecting plate 231 are fixedly connected to the second triangular support plate 238. The stability of the assembly frame 221 can be improved by the first triangular support plate 237, and the stability of the L-shaped connecting plate 231 can be improved by the second triangular support plate 238.

[0043] Reference Figure 2 , Figure 3 , Figure 4 and Figure 11As shown in this embodiment: the cooling structure 3 includes three mounting brackets 31, which are all fixedly connected to a water tank 32. A motor bracket 33 is fixedly connected to one side of the extension box 5. A water pump motor 34 is fixedly connected to the upper surface of the motor bracket 33. The water inlet of the water pump motor 34 is connected to the water tank 32. The output of the water pump motor 34 is connected to a water supply pipe 35. The water supply pipe 35 is connected to an annular pipe 36. Three cooling nozzles 37 are installed on the arc surface of the annular pipe 36. A pressure gauge 38 is installed on the arc surface of the water supply pipe 35. The pressure gauge 38 is located between the water pump motor 34 and the annular pipe 36. By installing the pressure gauge 38, the water pressure can be monitored to ensure that the water pressure is stable within the process requirements. A triangular support bracket 39 is fixedly connected to the lower surface of the motor bracket 33. The triangular support bracket 39 is fixedly connected to the extension box 5. By adding the triangular support bracket 39, the stability of the water pump motor 34 is increased and the pipeline load is reduced.

[0044] Reference Figure 2 , Figure 3 , Figure 4 , Figure 10 , Figure 12 , Figure 13 , Figure 14 , Figure 15 and Figure 16As shown in this embodiment: the auxiliary structure 4 includes a collection component 41 and an auxiliary component 42. The collection component 41 includes an extension tube 411, which is connected to the guide cover 214. The auxiliary component 42 includes a sliding frame 421, which is fixedly connected to the chassis 1. Two sliding plates 422 are slidably connected to the inner wall of the sliding frame 421. A debris collection box 417 is fixedly connected to the side of the two sliding plates 422 that are close to each other. A guide tube 412 is fixedly connected to the bottom wall of the debris collection box 417. An assembly ring 414 abuts against the upper surface of the guide tube 412. A connecting tube 415 is fixedly connected to the inner wall of the assembly ring 414. A filter screen 41 is fixedly connected to the inner wall of the connecting tube 415. 6. The upper surface of the assembly ring 414 abuts against the extension tube 411. Several guide grooves 413 are formed on the lower surface of the guide tube 412. Two abutment brackets 423 are fixedly connected to the bottom wall of the sliding frame 421. The two abutment brackets 423 abut against the debris collection box 417. A sealing ring 427 is fitted onto the lower surface of the extension tube 411. An abutment pad 424 is fixedly connected to the side of the abutment bracket 423 near the debris collection box 417. The sealing ring 427 is a rubber ring, and the abutment pad 424 is a rubber pad. Adding a rubber sealing ring 427 can improve the sealing performance between the extension tube 411 and the guide tube 412. The abutment pad 424 can reduce wear between the abutment bracket 423 and the debris collection box 417. Two rotating frames 418 are fixedly connected to the lower surface of the collection box 417. A rotating wheel 419 is rotatably connected to the inner wall of the rotating frame 418. Two extension frames 425 are fixedly connected to the side of the debris collection box 417 away from the abutment frame 423. A pull rod 426 is rotatably connected to the debris collection box 417 via the two extension frames 425. The rollers and pull rod 426 and other components allow the debris collection box 417 to be pulled out more easily. S1. The glass is first ground to achieve edge shaping using a 400-600 grit grinding wheel 212, preferably a 500 grit grinding wheel 212. The glass is then second ground to remove tiny pits on the surface of the grinding wheel using a 400-800 grit polishing wheel, preferably... Using a 500-grit polishing wheel, testing shows that aligning the wheel's rotation direction with the edge-grinding direction yields better results. The polishing wheel is not the grinding wheel 212. A third grinding process is performed on the glass to improve the smoothness of the grinding surface. A 500-1000 grit polishing wheel is used, preferably a 500-grit silicon carbide polishing wheel. Testing shows that aligning the wheel's rotation direction with the edge-grinding direction yields better results. S2. The surface of the grinding surface is brushed to remove tiny particles adhering to it, further improving smoothness. A brush roller 234 is used for brushing. The brush roller 234 is made of nylon, with a brush hardness of 11A to 15A and a bristle diameter of 0.2 to 0.3 mm. A brush with a hardness of 11A and a bristle diameter of 0.3 mm is preferred.A 2mm brush; S3, during the repeated grinding of the glass by the grinding wheel 212, the water pump motor 34 needs to be started. Water is sprayed from the cooling nozzle 37, spraying the grinding wheel 212 and the glass for cooling and rinsing. Debris is carried by the water flow to the guide cover 214, and then enters the guide pipe 412 through the extension pipe 411. After passing through the filter screen 416, the debris is filtered, and the cooling water enters the debris collection box 417.

[0045] Working principle: Through the above technical solution, when grinding the glass substrate, the grinding motor 211 is first started to drive the grinding wheel 212 to rotate, and the glass substrate is ground multiple times. Then, according to the requirements, the adjustment motor 224 is started to drive the ball screw 225 to rotate, and the adjustment slide 228 moves. During this process, it moves together with the L-shaped connecting plate 231 to control the feed or retraction of the brush roller 234 and control the contact force. By setting the grinding structure 2, for OLED flexible display glass substrates of LTPO process, the glass substrate will not be deformed or damaged even if it is ground extensively, which greatly improves the processing quality of the glass substrate edge. Moreover, the brush bristles 235 are made of nylon material, which can effectively clean the surface of the grinding area without causing surface damage.

[0046] The grinding method for the glass substrate in this invention is as follows: First, the glass is ground for the first time to achieve the purpose of edge shaping, using a 400-600 grit grinding wheel 212, preferably a 500 grit grinding wheel 212. Second, the glass is ground for the second time to remove tiny pits on the surface of the grinding wheel, using a 400-800 grit polishing wheel, preferably a 500 grit polishing wheel. Testing shows that the rotation direction of the polishing wheel is consistent with the edge grinding direction for better results. The polishing wheel is not the grinding wheel 212. The third step is to perform a third grinding on the glass to improve the smoothness of the grinding surface. Use a 500-1000 grit polishing wheel, preferably a 500 grit silicon carbide polishing wheel. Tests show that the effect is better if the rotation direction of the polishing wheel is consistent with the grinding direction. The fourth step is to brush the surface of the grinding surface to remove the tiny particles adhering to the surface of the grinding surface and further improve the smoothness of the grinding surface. Use a brush roller 234 for brushing. The brush bristles 235 are made of nylon with a hardness of 11A to 15A and a bristle diameter of 0.2 to 0.3 mm. It is preferable to use a brush with a hardness of 11A and a bristle diameter of 0.2 mm.

[0047] During the multiple grinding processes of the glass substrate, the water pump motor 34 needs to be started simultaneously. The water flows to the annular pipe 36 and is sprayed out by three cooling nozzles 37 to rinse the grinding wheel 212 and the glass substrate in real time. The water pump motor 34 can be turned off after grinding is completed. The pressure gauge 38 can monitor the water pressure to ensure that the water pressure is stable within the process requirements. The triangular support frame 39 increases the stability of the water pump motor 34 and reduces the load on the pipeline. By adding a cooling structure 3 in conjunction with the wet grinding process, cooling, chip removal and protection of the processed surface are achieved. The cooling nozzles 37 are installed near the grinding wheel 212 and spray water in a directional manner to the grinding point to rinse away glass fragments and abrasive residues in real time and cool the grinding wheel 212 and the glass substrate to avoid thermal deformation of the glass substrate and ensure edge dimensional accuracy.

[0048] After the debris is washed down, the debris and water flow are guided by the bottom cover 214 to the extension pipe 411. When the debris and water flow pass through the guide pipe 412, they are filtered by the filter screen 416 inside the guide pipe 412. The debris stays on the filter screen 416, while the water is guided by the guide channel 413 to the debris collection box 417. After grinding is completed, the entire debris collection box 417 can be pulled out with the help of the pull rod 426 to store the collected water for reuse. The addition of a rubber sealing ring 427 can improve the sealing between the extension pipe 411 and the guide pipe 412. The abutment gasket 424 can reduce the wear between the abutment frame 423 and the debris collection box 417. The rollers and pull rod 426 and other components can make it easier to pull out the debris collection box 417. By adding the auxiliary structure 4, the debris generated during the grinding process can be collected and filtered, and the filtered water will also be collected by the debris collection box 417 for reuse.

[0049] The embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0050] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent modifications can be made to some technical features without departing from the scope and spirit of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any manner.

Claims

1. An apparatus for processing an OLED flexible glass substrate based on an LTPO process, characterized in that, Include: The cabinet (1), one side of the cabinet (1) is provided with an extension box (5); Grinding structure (2), one side of the cabinet (1) is provided with grinding structure (2); Cooling structure (3), one side of the extension box (5) is provided with cooling structure (3); Auxiliary structure (4), one side of the cabinet (1) is provided with auxiliary structure (4) close to the grinding structure (2); Wherein, the grinding structure (2) includes grinding assembly (21), feeding assembly (22) and rolling brush assembly (23), the grinding assembly (21) includes grinding motor (211), the grinding motor (211) is installed on one side of the cabinet (1), the output end of the grinding motor (211) is fixedly connected with grinding wheel (212), the feeding assembly (22) includes assembly frame (221), the assembly frame (221) is fixedly connected with one side of the cabinet (1) away from the extension box (5), the upper surface of the assembly frame (221) is fixedly connected with assembly plate (222), the upper surface of the assembly plate (222) is fixedly connected with two guide rails (223), the upper surface of the assembly plate (222) is fixedly connected with adjusting motor (224), the output end of the adjusting motor (224) is fixedly connected with ball screw (225), the upper surface of the assembly plate (222) is fixedly connected with support seat (226), the support seat (226) is rotatably connected with the ball screw (225), the circular arc surface of the ball screw (225) is threadedly connected with nut connecting piece (227), the upper surface of the nut connecting piece (227) is fixedly connected with sliding table (228), the upper surfaces of two guide rails (223) are respectively slidably connected with three sliding blocks (229), six sliding blocks (229) are fixedly connected with sliding table (228), the rolling brush assembly (23) includes L-shaped connecting plate (231), the L-shaped connecting plate (231) is fixedly connected with the sliding table (228), the short arm end of the L-shaped connecting plate (231) is provided with fixing seat (232), the L-shaped connecting plate (231) is provided with brush motor (233) by means of fixing seat (232), the output end of the brush motor (233) is fixedly connected with brush roller (234), the circular arc surface of the brush roller (234) is fixedly connected with a plurality of rolling brush bristles (235).

2. The LTPO process based OLED flexible glass substrate processing apparatus according to claim 1, wherein, The one side of the L-shaped connecting plate (231) is fixedly connected with the rolling brush guard (236), and the rolling brush guard (236) abuts against the fixing seat (232).

3. The LTPO process based OLED flexible glass substrate processing apparatus of claim 2, wherein, The inner wall of the grinding guard (213) is fixedly connected with the guide bottom cover (214), and the guide bottom cover (214) is composed of four downward inclined bottom plates.

4. The LTPO process based OLED flexible glass substrate processing apparatus of claim 3, wherein, The side of the assembly frame (221) away from the cabinet (1) is fixedly connected with three first triangular supporting plates (237), and the long arm end and the short arm end of the L-shaped connecting plate (231) are fixedly connected with the second triangular supporting plate (238).

5. The LTPO process based OLED flexible glass substrate processing apparatus of claim 4, wherein, The cooling structure (3) comprises three mounting racks (31), the three mounting racks (31) are fixedly connected with a water tank (32) in common, one side of the extension box (5) is fixedly connected with a motor rack (33), the upper surface of the motor rack (33) is fixedly connected with a water pump motor (34), the water inlet end of the water pump motor (34) is in communication connection with the water tank (32), the output end of the water pump motor (34) is in communication connection with a water delivery pipe (35), the water delivery pipe (35) is in communication connection with a ring pipe (36), and the circular arc surface of the ring pipe (36) is provided with three cooling nozzles (37).

6. The LTPO process based OLED flexible glass substrate processing apparatus of claim 5, wherein, The circular arc surface of the water delivery pipe (35) is provided with a pressure gauge (38), and the pressure gauge (38) is located between the water pump motor (34) and the ring pipe (36).

7. The LTPO process based OLED flexible glass substrate processing apparatus of claim 6, wherein, The lower surface of the motor rack (33) is fixedly connected with a triangular support frame (39), and the triangular support frame (39) is fixedly connected with the extension box (5).

8. The LTPO process based OLED flexible glass substrate processing apparatus of claim 7, wherein, The auxiliary structure (4) comprises a collecting assembly (41) and an auxiliary assembly (42), the collecting assembly (41) comprises an extension pipe (411), the extension pipe (411) is in communication connection with the guide bottom cover (214), the auxiliary assembly (42) comprises a sliding frame (421), the sliding frame (421) is fixedly connected with the case (1), the inner wall of the sliding frame (421) is slidably connected with two sliding plates (422), the two sliding plates (422) are fixedly connected with a debris collecting box (417) on the side close to each other, the bottom wall of the debris collecting box (417) is fixedly connected with a flow guide pipe (412), the upper surface of the flow guide pipe (412) is abutted with an assembly ring (414), the inner wall of the assembly ring (414) is fixedly connected with a connecting pipe (415), the inner wall of the connecting pipe (415) is fixedly connected with a filter screen (416), the upper surface of the assembly ring (414) is abutted with the extension pipe (411), the lower surface of the flow guide pipe (412) is provided with a plurality of flow guide grooves (413), and the bottom wall of the sliding frame (421) is fixedly connected with two abutment frames (423), and the two abutment frames (423) are abutted with the debris collecting box (417).

9. The LTPO process based OLED flexible glass substrate processing apparatus of claim 8, wherein, The lower surface of the extension pipe (411) is sleeved with a sealing ring (427), the side of the abutment frame (423) close to the debris collecting box (417) is fixedly connected with an abutment pad (424), the sealing ring (427) is a rubber ring, the abutment pad (424) is a rubber pad, the lower surface of the debris collecting box (417) is fixedly connected with two rotating frames (418), the inner wall of the rotating frame (418) is rotatably connected with a rotating wheel (419), and the side of the debris collecting box (417) away from the abutment frame (423) is fixedly connected with two extension frames (425), and the debris collecting box (417) is rotatably connected with a pull rod (426) through the two extension frames (425).

10. A method of processing an OLED flexible glass substrate based on LTPO process, using the apparatus for processing an OLED flexible glass substrate based on LTPO process according to any one of claims 1-9, characterized in that, The method comprises the following steps: S1, the first grinding of glass, to achieve the purpose of edge shaping, using 400-600 mesh grinding wheel (212), preferably using 500 mesh grinding wheel (212), the second grinding of glass, to remove the small pits on the grinding surface, using 400-800 mesh polishing wheel, preferably using 500 mesh polishing wheel, through the test, the polishing wheel rotation direction is consistent with the grinding direction of the effect is better, the polishing wheel is not a grinding wheel (212), the third grinding of glass, to improve the smoothness of grinding, using 500-1000 mesh polishing wheel, preferably using 500 mesh silicon carbide polishing wheel, through the test, the polishing wheel rotation direction is consistent with the grinding direction of the effect is better; S2, the surface of the grinding width is brushed to remove the small particles adhered to the surface of the grinding width, further improving the smoothness of the grinding width, using a brush roller (234) for brushing, the brush roller (234) is made of nylon, the brush hardness is 11A-15A, the brush diameter is 0.2-0.3mm, preferably using a brush with a hardness of 11A and a brush diameter of 0.2mm; S3, during the multiple grinding processes of the grinding wheel (212) on the glass, the water pump motor (34) needs to be started, the water flow is sprayed from the cooling nozzle (37), and the grinding wheel (212) and the glass are cooled and washed, the debris is carried by the water flow to the guide bottom cover (214), and is uniformly introduced into the flow guide pipe (412) from the extension pipe (411), after passing through the filter screen (416), the debris is filtered, and the cooling water enters the debris collection box (417).

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