Follow-up module, OLED screen body laser repair device and method, and defect repair system

Abstract

The application discloses a follow-up module, an OLED screen body laser repairing device and method, and a defect repairing system, and belongs to the field of OLED flexible display screen production. The follow-up module comprises a moving carrier for carrying an OLED screen body, a lighting mechanism provided with an electric contact, and a first sliding rail arranged along a first direction; the moving carrier and the lighting mechanism are in separable connection, and when the moving carrier and the lighting mechanism are in the connected state, can move synchronously on the first sliding rail, so as to maintain the lighting state of the OLED screen body, thereby making the defect repairing process of the OLED screen body be carried out in a gantry fixed manner, and laser unit shaking or vibration caused by gantry movement can be directly avoided, thereby improving the repairing effect of the OLED screen body. The laser repairing device and the OLED screen body defect repairing system comprising the laser repairing device are good in repairing effect and efficiency of the OLED screen body defects, and the yield of the OLED screen body after repairing is higher.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of OLED flexible display screen processing methods, and more particularly to a follow-up module, an OLED screen body laser repair device and method, and a defect repair system. BACKGROUND

[0002] The biggest difference between an OLED flexible display screen and a liquid crystal display is that the OLED flexible display screen can be bent and deformed to realize curved display. In addition, compared with the liquid crystal display, the OLED flexible display screen has lower energy consumption and longer service life, and is one of the mainstream directions of future display technology development.

[0003] In the production process of the OLED flexible display screen, multiple detection processes need to be performed to detect defective products as early as possible to avoid waste of cost. The detection processes generally include substrate detection, panel detection, screen body detection, etc., and these detection processes are distributed in various links of the production of the OLED flexible display screen. After the defective products are detected, the defective products can be simply classified, and the repairable defective products can be repaired.

[0004] In the related art, a feasible repair method for the OLED flexible display screen screen body is generally laser repair, for example, a kind of OLED Cell defect repair equipment disclosed in the Chinese patent document with the application number 2017213293601. The equipment is provided with at least two parallel transport tracks with movable carriages. The movable laser repair device can move to the defect position according to the identity information of the corresponding OLED Cell to repair the OLED Cell. The slope detection device and the lighting device can control the movement of the electrical contact to the appropriate position according to the slope of the position of the OLED Cell to be repaired on the movable carriage detected by the slope detection device, and accurately realize the electrical contact with the OLED Cell, so as to light up the OLED Cell to judge whether the repair is successful or not.

[0005] However, the weight of the laser repair device is large, and the center of gravity is relatively high. Therefore, during the movement of the laser repair device to the defect position, the detection mechanism thereon is prone to large amplitude vibration or shaking, so it is difficult to accurately position the defect on the screen body. At the same time, after the laser repair device stops moving, it will still continue to vibrate under the action of its own inertia, thereby reducing the repair effect of the laser mechanism of the laser repair device on the screen body and reducing the yield of the repaired screen body. SUMMARY

[0006] 1. Technical problems to be solved by the application

[0007] In order to overcome the problem of large vibration amplitude of the laser repair device when moving to find defects on the OLED screen body in the prior art, the present application provides a follow-up module for aligning the OLED screen body, which aims to complete the alignment before laser repair by moving the OLED screen body, thereby avoiding large vibration of the laser repair device.

[0008] Another object of the present application is to provide a laser repair device and method, and an OLED screen body defect repair system comprising the laser repair device, so as to improve the repair effect and efficiency of the defects of the OLED screen body.

[0009] 2. Technical solution

[0010] In order to achieve the above-mentioned object, the technical solution provided by the present application is as follows:

[0011] The follow-up module of the present application comprises a moving platform, a lighting mechanism and a first sliding rail arranged in a first direction, the moving platform is used for carrying an OLED screen body, the lighting mechanism is provided with an electrical contact for lighting the OLED screen body; the moving platform and the lighting mechanism are in separable connection, and when the moving platform and the lighting mechanism are in the connected state, they can move synchronously on the first sliding rail.

[0012] Further, the separable connection between the moving platform and the lighting mechanism is realized by a zero-point positioning mechanism.

[0013] Further, the zero-point positioning mechanism comprises a zero-point positioning joint and a zero-point positioning seat capable of clamping the zero-point positioning joint; the zero-point positioning joint is arranged on the side of the moving platform facing the lighting mechanism, and the zero-point positioning seat is arranged on the lighting mechanism and faces the zero-point positioning joint.

[0014] Further, the zero-point positioning mechanism is arranged in at least two groups.

[0015] Further, the first sliding rail is provided with a locking mechanism, and when the moving platform and the lighting mechanism are in the separated state, the locking mechanism locks and positions the lighting mechanism in the first direction.

[0016] Further, the locking mechanism is arranged inside the track of the first sliding rail, the lower side of the lighting mechanism is provided with a locking hole, and the locking head of the locking mechanism extends into the lighting mechanism from the locking hole to lock the lighting mechanism on the first sliding rail.

[0017] Further, the moving platform is driven to move by a platform driving member arranged on the first sliding rail, and the lighting mechanism is pulled / pushed to move by the moving platform in the connected state.

[0018] Further, the mobile carrier comprises a carrier sliding seat in sliding connection with the first sliding rail, and a fine adjustment structure is arranged on the carrier sliding seat, a bearing surface for placing the OLED screen body is arranged on the movement end of the fine adjustment structure, and the fine adjustment structure is used for adjusting the relative position between the bearing surface and the carrier sliding seat.

[0019] The present application discloses a follow-up module, which comprises a mobile carrier, a lighting mechanism and a first sliding rail arranged in a first direction.

[0020] Further, an electromagnet is arranged on the mobile carrier, a second connecting piece made of magnetic material or magnetizable material is arranged on the lighting mechanism, and the connection / separation of the mobile carrier and the lighting mechanism is realized by controlling the power-on / power-off of the electromagnet.

[0021] Further, a buffer piece is arranged on the lighting mechanism, and the compressible end of the buffer piece is arranged towards the mobile carrier.

[0022] The present application discloses an OLED screen body laser repair device, which comprises a base, a gantry and a mobile module arranged on the base, and the follow-up module.

[0023] Further, the follow-up module is arranged in at least two, and the at least two follow-up modules are arranged side by side on the mobile module.

[0024] The present application discloses an OLED screen body laser repair device, which comprises a base, a gantry and a mobile module arranged on the base, and the follow-up module.

[0025] Further, the gantry is provided with a calibration mechanism and / or a detection mechanism, the calibration mechanism is used to collect the relative position information of the OLED screen body and the moving carrier; and the detection mechanism is used to collect the position information of the defects on the OLED screen body.

[0026] In the preparation stage, when the moving carrier passes the position of the calibration mechanism, the calibration mechanism collects the relative position information of the OLED screen body and the moving carrier; and the fine adjustment mechanism adjusts the relative position of the OLED screen body and the electrical contact according to the relative position information of the OLED screen body and the moving carrier.

[0027] In the repair stage, when the moving carrier passes the position of the detection mechanism, the detection mechanism is used to collect the position information of the defects on the OLED screen body.

[0028] The OLED screen body defect repair system comprises a laser repair device, a feeding and discharging device and a material transfer device, the material transfer device is used to transfer the OLED screen body between the laser repair device and the feeding and discharging device; the laser repair device comprises a base, a gantry and at least one follow-up module according to any one of claims 1-11, the gantry is fixedly arranged on the base, and a laser unit is arranged on the gantry; the laser unit and the follow-up module can move relatively in the second direction, and the moving carrier and the lighting mechanism of the follow-up module can move synchronously in the first direction, so that the defects of the OLED screen body carried by the moving carrier are located on the laser unit on the gantry.

[0029] 3. Beneficial effects

[0030] Compared with the prior art, the technical scheme provided by the present application has the following beneficial effects:

[0031] (1) The follow-up module of the present application comprises a moving carrier, a lighting mechanism and a first sliding rail arranged in the first direction, the moving carrier is used to carry the OLED screen body, and the lighting mechanism is provided with an electrical contact for lighting the OLED screen body; the moving carrier and the lighting mechanism are in separable connection, and when the moving carrier and the lighting mechanism are in the connected state, they can move synchronously on the first sliding rail to maintain the lighting state of the OLED screen body, so that the defect repair process of the OLED screen body can be carried out in the mode of fixed gantry, which can directly avoid the laser unit shaking or vibrating caused by the movement of the gantry, thereby improving the repair effect of the OLED screen body and improving the yield of the repaired OLED screen body.

[0032] (2) In the present application, the detachable connection between the mobile platform and the lighting mechanism is realized through electromagnetic connection, so as to realize the conversion between the synchronous movement and the relative movement. Specifically, the connection / detachment between the mobile platform and the lighting mechanism is controlled by controlling the power-on / power-off of the electromagnet on the mobile platform or the lighting mechanism; or the detachable connection between the mobile platform and the lighting mechanism is realized through the zero-point positioning mechanism. Therefore, during the movement, the mobile platform or the lighting mechanism is stably connected, so that the electrical connection between the electrical contact and the OLED screen body is stable, and the OLED screen body can be stably and continuously lighted.

[0033] (3) The laser repair device of the present application, when one of the at least two follow-up modules performs the repair stage, the remaining follow-up modules perform the preparation stage and / or the repair stage, so as to effectively shorten the interval time of the OLED screen body defect repair performed by the different follow-up modules alternately, and improve the efficiency of the OLED screen body defect repair. At the same time, the OLED screen body defect repair system comprising the laser repair device has good laser repair effect on the OLED screen body. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 The system structure schematic diagram of the OLED screen body laser repair method of the present application;

[0035] Figure 2 The structure schematic diagram of the laser repair device in the present application;

[0036] Figure 3 The schematic diagram of the repair mechanism cooperating with the follow-up module in the present application;

[0037] Figure 4 The structure schematic diagram of the follow-up module in the present application;

[0038] Figure 5 The structure schematic diagram of the mobile platform in the present application;

[0039] Figure 6 The structure schematic diagram of the XYθ positioning platform in the present application;

[0040] Figure 7 The structure schematic diagram of the lighting mechanism in the present application;

[0041] Figure 8 The cooperation relationship schematic diagram of the support arm and the lifting arm in the present application;

[0042] Figure 9 The cooperation relationship schematic diagram of the electrical contact and the mobile platform in the present application;

[0043] Figure 10 The cooperation relationship schematic diagram of the mobile platform and the lighting mechanism in the present application;

[0044] Figure 11 Figure 3 is a schematic view of the cooperation relationship between the mobile carrier and the lighting mechanism in a separated state of the present application;

[0045] Figure 12 Figure 4 is a schematic view of the structure of the locking hole of the present application;

[0046] Figure 13 Figure 5 is a schematic view of the structure of the locking mechanism of the present application;

[0047] Figure 14 Figure 6 is a schematic view of the structure of the electromagnetic connection type laser repair device of the present application;

[0048] Figure 15 Figure 7 is a schematic view of the cooperation between the repair mechanism and the follow-up module in the electromagnetic connection type laser repair device of the present application;

[0049] Figure 16 Figure 8 is a schematic view of the cooperation relationship between the first connecting member and the second connecting member in the electromagnetic connection type laser repair device of the present application;

[0050] Figure 17 Figure 9 is a schematic view of the cooperation relationship between the electrical contact and the mobile carrier in the electromagnetic connection type laser repair device of the present application;

[0051] Figure 18 Figure 10 is a schematic view of the cooperation relationship between the lighting mechanism and the locking mechanism in the electromagnetic connection type laser repair device of the present application.

[0052] Explanation of the reference numerals in the schematic view: 100, laser repair device; 101, base; 102, base frame; 110, gantry; 111, support; 112, cross beam; 120, follow-up module; 121, first sliding rail; 122, mobile carrier; 1221, bearing surface; 1222, placement position; 1223, support edge; 1224, carrier sliding seat; 1225, fine adjustment mechanism; 1226, first connecting member; 1227, connecting hole; 123, lighting mechanism; 1231, support arm; 1232, lifting arm; 1233, electrical contact; 1234, lighting sliding seat; 1235, locking hole; 1236, second connecting member; 1237, connecting protrusion; 1238, buffer member; 1239, backlight source; 124, locking mechanism; 1241, locking head; 1242, mounting seat; 1243, locking driving member; 130, mobile module; 131, second sliding rail; 140, calibration mechanism; 150, repair mechanism; 160, detection mechanism; 200, material transfer device; 300, feeding and discharging device. DETAILED DESCRIPTION

[0053] For further understanding of the present application, the present application is described in detail in combination with the drawings and examples.

[0054] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0055] In related fields, laser repair technology is commonly used to repair OLED screens. In this method, a laser unit that generates the laser is slidably mounted on a movable gantry. The laser unit can move in a first direction by moving the gantry, and in a second direction by moving a sliding base that is slidably connected to the crossbeam of the gantry. This allows for the alignment of the laser unit with defects on the OLED screen. Therefore, this repair method can be called an active laser repair method using a laser unit.

[0056] The reason why the commonly used laser unit active laser repair method is to repair OLED screens is that the length of the wiring harness used to power the lighting mechanism and / or transmit signals is limited, which does not allow the lighting mechanism to move directly to the receiving position to transport the OLED screen. Therefore, the laser unit active laser repair method can be used to repair OLED screens directly without considering the length of the wiring harness or the stability of the connection between the OLED screen and the electrical contacts when the moving platform moves synchronously with the lighting mechanism.

[0057] Specifically, the active laser repair method using laser units includes the following stages:

[0058] Preparation phase: The mobile platform carrying the OLED screen and the lighting mechanism equipped with electrical contacts move relative to each other in the first direction and meet; then, the mobile platform and the lighting mechanism complete the connection.

[0059] Repair phase: The electrical contacts illuminate the OLED screen, and the gantry moves relative to the OLED screen in the first direction so that the laser unit is aligned with the defect of the OLED screen in the first direction. Then, by moving the sliding base on the gantry along the second direction, the laser unit located on the sliding base is aligned with the defect of the OLED screen in the second direction. After that, the laser unit completes the repair of the defect.

[0060] End phase: The moving platform returns to the material transfer position, and the laser unit returns to its initial position.

[0061] The above-mentioned active alignment process of the laser unit has many problems. Among them, the problem that most easily has a negative impact on the repair effect of the OLED screen body is that the gantry itself is relatively heavy, and it is easy to cause the laser unit on it to shake or vibrate violently during movement, thereby reducing the accuracy of the alignment of the laser unit and the OLED screen body. In addition, the problems of the large amount of electrical energy consumed by the frequent movement of the gantry with a large weight, the small displacement accuracy of the gantry relative to the OLED screen body, and the long time consumed by a single gantry when moving between multiple OLED screen bodies will all reduce the efficiency / effect of laser repair of the OLED screen body.

[0062] To solve the above-mentioned problems, the embodiment provides a light-on mechanism follow-up OLED screen body laser repair method. By moving the light-on mechanism and the moving platform relative to the laser unit, i.e. in a way that the light-on mechanism moves synchronously with the moving platform, the defects on the OLED screen body are aligned with the laser unit, thereby directly avoiding the shaking or vibration of the laser unit.

[0063] Specifically, the repair method of the embodiment includes the following stages:

[0064] Preparation stage: the moving platform carrying the OLED screen body and the light-on mechanism configured with the electrical contact move relative to each other in the first direction and meet; then, the moving platform and the light-on mechanism are connected.

[0065] Repair stage: the electrical contact lights up the OLED screen body, the moving platform and the light-on mechanism move synchronously in the first direction to align the defects of the OLED screen body with the laser unit in the first direction, and simultaneously adjust the relative distance between the moving platform, the light-on mechanism and the laser unit in the second direction to align the defects of the OLED screen body with the laser unit in the second direction; then, the laser unit completes the repair of the defects.

[0066] End stage: the moving platform returns to the material moving position, and the light-on mechanism returns to the initial position.

[0067] It should be pointed out that the first direction referred to in the embodiment can be the direction in which the line connecting the moving platform and the light-on mechanism is located, for example, the x direction identified in the drawings; the second direction can be a direction perpendicular to the first direction and located in the movement plane of the moving platform, for example, the y direction identified in the drawings; and the third direction can be a direction perpendicular to the movement plane of the moving platform, for example, the z direction identified in the drawings.

[0068] Obviously, the first direction, or the second direction, or the third direction, as referred to in the embodiment, is not a single direction, but two opposite directions. For example, moving in the first direction can mean moving forward in the first direction, or moving backward in the first direction, that is, moving in the first direction can mean moving along the x direction in the drawing, or moving in the opposite direction of the x direction in the drawing, which is not contradictory.

[0069] In terms of the repair stage, in order to realize the synchronous movement of the mobile carrier carrying the OLED screen and the lighting mechanism provided with the electrical contacts in the first direction, the mobile carrier and the lighting mechanism can realize the conversion between synchronous movement and relative movement through separable connection.

[0070] The separable connection specifically means that the mobile carrier and the lighting mechanism can be in a connected state or a separated state. When the mobile carrier and the lighting mechanism are in the separated state, the mobile carrier and the lighting mechanism can move relative to each other in the first direction, so as to realize the transportation of the OLED screen between the laser repair device and the upstream and downstream processes of the laser repair device by the mobile carrier; when the mobile carrier and the lighting mechanism are in the connected state, the mobile carrier and the lighting mechanism can move synchronously in the first direction.

[0071] It should be pointed out that the synchronous movement as referred to in the embodiment means that when the mobile carrier and the lighting mechanism move in the first direction at the same time, the mobile carrier and the lighting mechanism remain relatively stationary in the first direction, so as to ensure that the electrical contacts of the lighting mechanism and the OLED screen maintain stable electrical connection, prevent short circuit, open circuit, and poor contact between the electrical contacts and the OLED screen, and prevent the OLED screen from being unable to complete repair.

[0072] In order to ensure the stability of the electrical connection between the electrical contacts and the OLED screen, the mobile carrier and the lighting mechanism are positioned and limited between each other while being connected, so that the movement of the mobile carrier and the lighting mechanism in the first direction is completely synchronous. Therefore, the separable connection between the mobile carrier and the lighting mechanism can be electromagnetic connection, or can be realized through a zero positioning mechanism, or can be connected through buckle connection, interference connection, pin shaft connection, or other connection modes.

[0073] When the mobile carrier and the lighting mechanism are in the connected state, the synchronous movement of the mobile carrier and the lighting mechanism in the first direction can be realized by pulling / pushing the lighting mechanism by the mobile carrier, or can be realized by pulling / pushing the mobile carrier by the lighting mechanism. In addition, the mobile carrier and the lighting mechanism can also move respectively, and the speeds of the mobile carrier and the lighting mechanism in the first direction are controlled to be the same.

[0074] To realize the movement of the mobile platform and the lighting mechanism in the second direction, the mobile platform and the lighting mechanism can be arranged on the same first sliding rail and formed as a servo module. At this time, the position of the OLED screen body in the second direction can be adjusted by moving the servo module in the second direction, so that the defects on the OLED screen body are aligned with the laser unit in the second direction.

[0075] The servo module can be arranged in two or more, for example, two, three or more. Therefore, when one of the servo modules is performing the repair stage, the remaining servo modules can perform the preparation stage, or perform the end stage, or perform the end stage first and then perform the preparation stage. Compared with only one servo module, arranging two or more servo modules can make the laser unit not need to wait for the servo module to complete the end stage and the preparation stage, and can repair different OLED screens, thereby improving the repair efficiency of the repair method of the embodiment.

[0076] In addition, the relative distance between the mobile platform and the lighting mechanism and the laser unit can also be adjusted by moving the laser unit in the second direction. Although this method still needs to move the laser unit, the gantry itself is fixed, so the jitter of the laser unit is relatively small, and the technical effect of the embodiment can also be achieved.

[0077] To implement the repair method provided above, the embodiment provides a corresponding OLED screen laser repair system.

[0078] The following,

[0079] As a specific example, Figure 1 The structure of the OLED screen laser repair system is shown, which specifically includes a laser repair device 100, a material transfer device 200 and a feeding and discharging device 300. According to the order of steps of the whole repair method, the feeding and discharging device 300 is used to feed the OLED screen body first, then the material transfer device 200 is used to transfer the OLED screen body into the laser repair device 100, the laser repair device 100 completes the repair of the OLED screen body, then the material transfer device 200 transfers the repaired OLED screen body into the feeding and discharging device 300, and finally the feeding and discharging device 300 completes the classification and discharging of the OLED screen body.

[0080] More specifically, the feeding and discharging device 300 has a feeding station F, a temporary storage station S and a plurality of discharging stations G. After the tray loaded with a plurality of OLED screens reaches the feeding station F, the OLED screens on the tray are transferred away by the material transfer device 200 in sequence, and the empty tray is conveyed into the discharging station G; when there is an un-filled tray in the discharging station G, the empty tray is conveyed into the temporary storage station S; when the discharging station G needs an empty tray and the tray of the feeding station F still carries OLED screens, the empty tray is taken out from the temporary storage station S and placed in the corresponding discharging station G.

[0081] In the related art, after the repair of the OLED screen is completed, the OLED screen usually needs to be detected and the repair effect is evaluated, and the OLED screen is divided into a plurality of levels according to the result. Therefore, the feeding and discharging device 300 of this embodiment is provided with three discharging stations G, i.e. a discharging station G1, a discharging station G2 and a discharging station G3, which correspond to three different levels respectively. Of course, the number of discharging stations G is not limited, and different numbers of discharging stations G can be set according to the specific implementation.

[0082] The material transfer device 200 can include a plurality of storage stations for placing / transferring OLED screens, and a transfer mechanism capable of transferring OLED screens on different storage stations. The transfer mechanism can be a four-axis robot, a five-axis robot, a six-axis robot, or a mechanism commonly used in the related art for transferring OLED screens. The structure of the transfer mechanism is not specifically limited, and the number of transfer mechanisms is also not specifically limited.

[0083] Figure 2 The structure of the laser repair device 100 in this embodiment is shown, which specifically includes a base 101, and a gantry 110, a moving module 130 and a plurality of follow-up modules 120 arranged on the base 101. Among them, the gantry 110 is fixedly arranged on the base 101, and the gantry 110 is provided with a calibration mechanism 140, a repair mechanism 150 and a detection mechanism 160. The laser unit of the repair mechanism 150 is used for repairing the OLED screen; the calibration mechanism 140 is used to collect the relative position information of the OLED screen and the moving stage 122; the detection mechanism 160 is used to collect the defect information on the OLED screen. The calibration mechanism 140 and the detection mechanism 160 can be cameras.

[0084] Specifically, in the preparation stage, when the moving stage passes through the position where the calibration mechanism is located, the calibration mechanism collects the relative position information of the OLED screen and the moving stage, and the fine adjustment mechanism adjusts the relative position of the OLED screen and the electrical contact according to the relative position information of the OLED screen and the moving stage.

[0085] Specifically, in the repairing stage, when the moving carrier passes the position of the detecting mechanism, the detecting mechanism can be used to collect the position information of the defects on the OLED screen body, and the defects on the OLED screen body can be aligned with the laser unit according to the position information.

[0086] Figure 3 The cooperation relationship between the repairing mechanism 150 and the following module 120 in this embodiment is shown. The moving carrier 122 and the lighting mechanism 123 of the following module 120 can move synchronously in the first direction, and the following module 120 can move on the moving module 130 in the second direction, so that the repairing mechanism 150 can be aligned with the OLED screen body carried on the following module 120, and the repairing process of the repairing mechanism 150 on the OLED screen body can be realized.

[0087] Figure 4 The specific structure of the following module 120 in this embodiment is shown. Specifically, the following module 120 can include a first sliding rail 121, a moving carrier 122 and a lighting mechanism 123. The first sliding rail 121 can be arranged in the first direction, and the moving carrier 122 and the lighting mechanism 123 are slidably arranged on the first sliding rail 121, so that the moving carrier 122 and the lighting mechanism 123 have the possibility of moving in the first direction.

[0088] In the repairing process, the defects on the OLED screen body can be aligned with the laser unit in the first direction by moving the first sliding rail in the second direction. Specifically, the moving module 130 includes a plurality of second sliding rails 131 arranged in the second direction, for example, two second sliding rails 131, or three second sliding rails 131, or more second sliding rails 131. The first sliding rail 121 is slidably arranged on the second sliding rail 131, and the alignment of the OLED screen body carried on the moving carrier 122 with the laser unit in the first direction is realized by the overall sliding of the first sliding rail 121 on the second sliding rail 131.

[0089] In this embodiment, two following modules 120 are arranged side by side on the moving module 130. The two following modules 120 can be alternately moved below the repairing mechanism 150, so that the moving carriers 122 on the different following modules 120 can be moved to the positions corresponding to the laser units, respectively.

[0090] Figure 5The specific structure of the mobile carrier 122 in the present example is shown. Specifically, the mobile carrier 122 can include a carrier sliding seat 1224, a first connecting member 1226, and a bearing surface 1221. The carrier sliding seat 1224 is in sliding connection with the first sliding rail 121; the bearing surface 1221 is located above the carrier sliding seat 1224 and is used to carry the OLED screen body; and the first connecting member 1226 is arranged on the carrier sliding seat 1224 and is located on the side of the carrier sliding seat 1224 facing the lighting mechanism 123, and is used to connect with the lighting mechanism 123.

[0091] The bearing surface 1221 is provided with a plurality of placement positions 1222, the sizes of different placement positions 1222 are different, but the edges of all the placement positions 1222 close to the lighting mechanism 123 are aligned, thereby facilitating the electric contact 1233 to light up OLED screen bodies of different sizes. The side of the bearing surface 1221 close to the lighting mechanism 123 can be provided with a supporting rim 1223, the supporting rim 1223 can protrude from the bearing surface 1221 and is used to place the edge of the OLED screen body in contact with the electric contact 1233. The supporting rim 1223 can be provided with micro-holes for adsorbing the OLED screen body. In addition, the supporting rim 1223 can also be provided with a backlight strip for providing a light source, thereby illuminating the OLED screen body.

[0092] In order to fine-tune the relative position between the OLED screen body and the electric contact 1233 and ensure the accuracy and stability of the electrical connection between the electric contact 1233 and the OLED screen body, the mobile carrier 122 of the embodiment is further provided with a fine-tuning mechanism 1225. Specifically, the fine-tuning mechanism 1225 can be arranged on the carrier sliding seat 1224, the bearing surface 1221 is arranged on the movement end of the fine-tuning mechanism 1225, and the position of the bearing surface 1221 relative to the electric contact 1233 is adjusted by the fine-tuning mechanism 1225, thereby completing the fine-tuning of the position between the electric contact 1233 and the OLED screen body.

[0093] The fine-tuning mechanism 1225 can include a first fine-tuning rail and a second fine-tuning rail arranged perpendicular to each other, and a rotating shaft, the first fine-tuning rail and the second fine-tuning rail are arranged perpendicular to each other, the first fine-tuning rail is slidingly arranged on the carrier sliding seat 1224, the second fine-tuning rail is slidingly arranged on the first fine-tuning rail, the rotating shaft is arranged on the second fine-tuning rail, and the bearing surface 1221 is arranged on the rotating shaft. Thus, the bearing surface 1221 can adjust the position and angle in two directions relative to the carrier sliding seat 1224, thereby realizing the adjustment of the relative position between the OLED screen body on the bearing surface 1221 and the electric contact 1233.

[0094] In addition, with reference to Figure 6The fine adjustment mechanism 1225 of this embodiment can also be an XYθ positioning platform commonly used in the related field to fine adjust the position of the to-be-positioned object in two directions, such as but not limited to the XYθ positioning platform disclosed in the Chinese patent document with the application number 2018201100157. It should be noted that the specific structure of the XYθ positioning platform is not limited as long as it can achieve the adjustment of the position of the bearing surface 1221 in two directions relative to the stage sliding seat 1224.

[0095] Figure 7 The structure of the lighting mechanism 123 of this embodiment is shown. Specifically, the lighting mechanism 123 can include a lighting sliding seat 1234, a second connecting piece 1236, and an electrical contact 1233. Among them, the lighting sliding seat 1234 is in sliding connection with the first sliding rail 121; the second connecting piece 1236 is arranged on the first sliding rail 121 towards the side of the moving stage 122, and cooperates with the first connecting piece 1226 to realize the connection of the moving stage 122 and the lighting mechanism 123; the electrical contact 1233 is arranged above the first sliding rail 121 and can move relative to the first sliding rail 121 in the third direction, so that after the moving stage 122 and the lighting mechanism 123 are connected, the electrical contact 1233 can move relative to the OLED screen body and contact it to realize electrical connection.

[0096] Figure 8 The specific implementation mode of the movement of the electrical contact 1233 relative to the lighting sliding seat 1234 in the third direction is shown. Specifically, a support arm 1231 is arranged on the lighting sliding seat 1234, a lifting arm 1232 is slidingly arranged on the support arm 1231, and the electrical contact 1233 is arranged above the lifting arm 1232. The lifting arm 1232 is specifically driven by a lifting drive arranged on the support arm 1231 or the lighting sliding seat 1234. The lifting drive can be one of a gas cylinder, a hydraulic cylinder, and a motor, and the specific type is not limited as long as it can realize the sliding of the lifting arm 1232 in the third direction.

[0097] Figure 9 The cooperation relationship between the electrical contact 1233 and the moving stage 122 is shown. After the moving stage 122 and the lighting mechanism 123 are connected, the electrical contact 1233 is located above the OLED screen body. At this time, the lifting arm 1232 can be driven by the lifting drive to move towards the OLED screen body, and the electrical contact 1233 can be brought into contact with the OLED screen body to realize electrical connection.

[0098] Figure 10The cooperation between the mobile platform and the lighting mechanism is shown. In this embodiment, the mobile platform 122 and the lighting mechanism 123 can be connected in a snap-fit manner, which can be achieved by the cooperation of the connecting hole 1227 and the connecting protrusion 1237. The connecting hole 1227 is provided with a plurality of connecting claws that can move radially along the connecting protrusion 1237. When the connecting protrusion 1237 extends into the connecting hole 1227, the connecting claws can extend radially along the connecting protrusion 1237 and clamp the connecting protrusion 1237 through the plurality of connecting claws.

[0099] In addition, the snap-fit connection can be achieved by a zero-point positioning mechanism, that is, the separable connection can also be achieved by a zero-point positioning mechanism. Specifically, it can be a zero-point positioning mechanism commonly used in the related field to achieve the positioning connection of two components, such as but not limited to the zero-point positioning device disclosed in the Chinese patent document with the application number 2019211271594. The specific structure of the zero-point positioning mechanism of this embodiment is not limited, as long as it can achieve the connection of the mobile platform 122 and the lighting mechanism 123.

[0100] As an implementation, the zero-point positioning joint of the zero-point positioning mechanism can be arranged on the first connecting piece 1226, and the zero-point positioning seat can be arranged on the second connecting piece 1236. As another implementation, the zero-point positioning joint can also be arranged on the second connecting piece 1236, and the zero-point positioning seat can be arranged on the first connecting piece 1226. When connected, the zero-point positioning joint extends into the zero-point positioning seat, and then clamped by the zero-point positioning seat through air pressure, oil pressure, or mechanical force, thereby achieving the connection of the mobile platform 122 and the lighting mechanism 123.

[0101] The specific process and corresponding principle of clamping the zero-point positioning joint by the zero-point positioning seat can be implemented according to the scheme disclosed in the related field or the way recommended by the manufacturer, so the related content of this embodiment will not be described again.

[0102] In order to improve the connection stability and positioning effect between the mobile platform 122 and the lighting mechanism 123, the zero-point positioning mechanism can be arranged in two or more groups, such as two groups, three groups, or more groups. Specifically, the zero-point positioning seats of all zero-point positioning mechanisms can be arranged on the mobile platform 122; the zero-point clamping seats of all zero-point positioning mechanisms can be arranged on the mobile platform 122; a part of the zero-point positioning seats can be arranged on the mobile platform 122, and the other part of the zero-point positioning seats can be arranged on the lighting mechanism 123. The arrangement of the zero-point positioning mechanism is not limited.

[0103] Figure 11The cooperation relationship between the mobile carrier 122 and the lighting mechanism 123 in the disengaged state is shown, that is, in the disengaged state, the lighting mechanism 123 cannot be moved in the first direction, that is, the lighting mechanism 123 can only be pulled / pushed by the mobile carrier 122 in the first direction.

[0104] Specifically, the carrier driving member can be a pneumatic cylinder, a hydraulic cylinder or a motor, and the specific type of the carrier driving member is not limited. The lighting mechanism 123 is only slidingly connected to the first sliding rail 121. When the mobile carrier 122 and the lighting mechanism 123 are in the connected state, the mobile carrier 122 can drive the lighting mechanism 123 to slide along the first sliding rail 121; when the mobile carrier 122 and the lighting mechanism 123 are in the disengaged state, the lighting mechanism 123 is stationary on the first sliding rail 121, and the position of the lighting mechanism 123 in the first direction does not change.

[0105] When the mobile carrier 122 carries the OLED screen body to move towards the lighting mechanism 123, the mobile carrier 122 can contact the lighting mechanism 123, thereby causing the lighting mechanism 123 to move, so that it is difficult to accurately connect between the mobile carrier 122 and the lighting mechanism 123. Therefore, when the mobile carrier 122 and the lighting mechanism 123 are in the disengaged state, the lighting mechanism 123 can be fixed on the first sliding rail 121, thereby facilitating the connection between the mobile carrier 122 and the lighting mechanism 123.

[0106] Figure 12 The structure of the locking hole 1235 in this embodiment is shown, Figure 13 The structure of the locking mechanism 124 in this embodiment is shown. Specifically, a locking hole 1235 can be formed on the lower side of the lighting sliding seat 1234, and the locking mechanism 124 is arranged below the lighting sliding seat 1234, for example, on the first sliding rail 121. By extending / retracting the locking head 1241 of the locking mechanism 124, the locking mechanism 124 cooperates with the locking hole 1235 to complete the locking / release of the lighting mechanism 123 by the locking mechanism 124.

[0107] Figure 13 The structure of the locking mechanism in this embodiment is shown. Specifically, the locking mechanism 124 can include a mounting seat 1242 and a locking driving member 1243 arranged on the mounting seat 1242. The movement end of the locking driving member 1243 is connected with the locking head 1241 to drive the locking head 1241 to extend / retract relative to the mounting seat 1242.

[0108] The locking hole 1235 can also be formed on the side surface or the top surface of the lighting mechanism 123, for example, on the side surface of the supporting arm 1231. The position of the locking mechanism 124 corresponds to the position of the locking hole 1235, and the locking head 1241 extends / retracts along a direction perpendicular to the first direction.

[0109] In addition, the locking head 1241 can be arranged on the lighting mechanism 123, and the locking mechanism 124 for opening the locking hole 1235 can be arranged at the position corresponding to the locking head 1241. For example, when the locking head 1241 is arranged on the lower side of the lighting sliding seat 1234 of the lighting mechanism 123, the locking mechanism 124 can be arranged on the first sliding rail 121, and the locking head 1241 is arranged towards the locking mechanism 124, and the locking hole 1235 is opened on the locking mechanism 124 towards the locking head 1241.

[0110] In the following,

[0111] As another embodiment of the separable connection between the moving platform 122 and the lighting mechanism 123, Figure 14 The structure of the laser repair device 100 in this embodiment is shown. The base 101 can be fixedly connected to the chassis 102; the gantry 110 can include two supports 111 and a cross beam 112 connected between the two supports 111. The supports 111 are fixedly connected to the base 101, and the cross beam 112 is fixed relative to the base 101.

[0112] Figure 15 The cooperation between the repair mechanism 150 and the follow-up module 120 in this embodiment is shown. The repair mechanism 150 is located above the follow-up module 120, and the laser unit of the repair mechanism 150 is arranged towards the follow-up module 120. The follow-up module 120 can move relative to the laser unit along the second direction on the moving module, and the moving platform 122 on the follow-up module 120 can move the lighting mechanism 123 along the first sliding rail 121 in the first direction. The moving platform 122 and the lighting mechanism 123 are connected in a separable manner by electromagnetic connection.

[0113] Figure 16 The cooperation between the first connecting piece 1226 and the second connecting piece 1236 in this embodiment is shown. Specifically, as an embodiment, the first connecting piece 1226 can be an electromagnet, which can generate a magnetic force under power-on condition, thereby attracting the second connecting piece 1236 made of magnetic material or magnetizable material to the first connecting piece 1226, realizing the connection between the first connecting piece 1226 and the second connecting piece 1236; when the electromagnet is in power-off condition, the first connecting piece 1226 no longer has a magnetic force, and the first connecting piece 1226 and the second connecting piece 1236 no longer attract each other, thereby realizing the separation of the moving platform 122 and the lighting mechanism 123.

[0114] As another implementation, the second connecting member 1236 can be an electromagnet, and the first connecting member 1226 is made of magnetic or magnetizable material, so that the second connecting member 1236 can attract the first connecting member 1226 when powered, while the first connecting member 1226 and the second connecting member 1236 are separated when the second connecting member 1236 is powered off.

[0115] In addition, the first connecting member 1226 and the second connecting member 1236 can both be electromagnets, and when both the first connecting member 1226 and the second connecting member 1236 are powered, they generate mutually attractive magnetic fields, so that the moving platform 122 and the lighting mechanism 123 can be attracted to each other.

[0116] Figure 17 The cooperation between the electrical contact 1233 and the moving platform 122 in this embodiment is shown in the schematic view. The electrical contact 1233 can move relative to the moving platform 122 and cooperate with the moving platform 122 to press the OLED screen body, so as to realize the electrical connection between the electrical contact 1233 and the OLED screen body.

[0117] Figure 18 The cooperation between the lighting mechanism 123 and the locking mechanism 124 in this embodiment is shown. When the lighting mechanism 123 and the moving platform 122 are in a separated state, the locking head 1241 of the locking mechanism 124 can extend into the locking hole 1235 of the lighting mechanism 123, thereby realizing the locking of the lighting mechanism 123.

[0118] In addition, in this embodiment, a buffer 1238 can also be arranged between the lighting mechanism 123 and the moving platform 122, to reduce the impact force of the moving platform 122 on the lighting mechanism 123 when the lighting mechanism 123 meets the locking mechanism 124. The buffer 1238 can be arranged on the lighting mechanism 123, and the compressible end of the buffer 1238 is arranged towards the moving platform 122; or the buffer 1238 can be arranged on the moving platform 122, and the compressible end of the buffer 1238 is arranged towards the lighting mechanism 123.

[0119] The second connecting member 1236 can also be provided with a backlight 1239, which is arranged towards the electrical contact 1233. When the moving platform 122 and the lighting mechanism 123 meet and connect, the supporting rim 1223 is located between the backlight 1239 and the electrical contact 1233, and when the OLED screen body is lit, the backlight 1239 is also lit, to provide backlight for the OLED screen body, thereby facilitating the detection of the position of defects on the OLED screen body by the detection mechanism 160.

[0120] In the following,

[0121] As another embodiment of the way the moving platform 122 and the lighting mechanism 123 move in the first direction, the moving platform 122 can be driven to move by a platform driving device arranged on the first sliding rail 121; the lighting mechanism 123 can be driven to move by a lighting driving mechanism arranged on the first sliding rail 121. The lighting driving mechanism and the platform driving device can be a pneumatic cylinder, a hydraulic cylinder or an electric motor, and the specific type is not limited.

[0122] Therefore, when the moving platform 122 and the lighting mechanism 123 are in the separated state, they can move respectively and meet at any connecting position between the material moving position of the moving platform 122 and the initial position of the lighting mechanism 123, and complete the connection, thereby shortening the time of the preparation stage; after the repair stage is completed, the moving platform 122 and the lighting mechanism 123 can move reversely at the same time, the moving platform 122 returns to the material moving position, and the lighting mechanism 123 returns to the initial position, thereby shortening the time of the ending stage and further improving the repair efficiency.

[0123] When the moving platform 122 and the lighting mechanism 123 meet at the connecting position, in order to improve the stability of the connection between the moving platform 122 and the lighting mechanism 123, a locking mechanism 124 can be arranged on the first sliding rail 121 at a position corresponding to the connecting position, and the locking of the lighting mechanism 123 or the locking of the moving platform 122 is completed through the locking mechanism 124.

[0124] For a single follow-up module 120, the specific method of repairing the OLED screen body by using the repair system of the embodiment can include the following stages,

[0125] The following,

[0126] As another embodiment of the arrangement of the fine adjustment mechanism 1225, the fine adjustment mechanism 1225 can be arranged on the lighting mechanism, so that the position between the OLED screen body and the electric contact 1233 can be adjusted by adjusting the lighting mechanism 123 through the fine adjustment mechanism 1225.

[0127] Specifically, the fine adjustment mechanism 1225 can be arranged on the lighting sliding seat 1234 of the lighting mechanism 123, the supporting arm 1231 is arranged on the moving end of the fine adjustment mechanism 1225, and the position of the electric contact 1233 relative to the bearing surface 1221 is adjusted through the fine adjustment mechanism 1225, so as to complete the fine adjustment of the electric contact 1233 and the OLED screen body.

[0128] Similarly, in this embodiment, the fine adjustment mechanism 1225 can include a first fine adjustment rail and a second fine adjustment rail, and the first fine adjustment rail and the second fine adjustment rail are arranged perpendicular to each other. The second fine adjustment rail is used to adjust the position of the electric contact 1233 in the first direction, and the first fine adjustment rail is used to adjust the position of the first fine adjustment rail in the second direction.

[0129] In addition, the fine adjustment mechanism 1225 can also be an XYθ positioning platform, and the detailed description can refer to the foregoing embodiment, which will not be repeated here.

[0130] Of course, the fine adjustment mechanism 1225 can also be arranged on the moving platform 122. At this time, the relative position between the electrical contact 1233 and the OLED screen body can be fine adjusted by adjusting the fine adjustment mechanism 1225 on the lighting mechanism 123 and the fine adjustment mechanism 1225 on the moving platform 122; or the fine adjustment mechanism 1225 on the lighting mechanism 123 or the fine adjustment mechanism 1225 on the moving platform 122 can be adjusted separately.

[0131] In the following,

[0132] As another embodiment of the way of aligning the defect of the OLED screen body with the laser unit in the second direction, the gantry 110 is fixedly arranged on the base 101, the beam 112 of the gantry 110 is arranged in the second direction, and the repairing mechanism 150 is arranged on the beam 112 and can slide in the second direction. The follow-up module 120 is arranged below the beam 112, and the first sliding rail 121 of the follow-up module 120 is arranged perpendicularly to the beam 112, and the moving platform 122 on the first sliding rail 121 can pull / push the lighting mechanism 123 to move in the first direction.

[0133] In the repairing stage, the moving platform 122 moves with the OLED screen body on the first sliding rail 121, so that the defect of the OLED screen body is aligned with the beam 112 in the first direction; the repairing mechanism 150 slides on the beam 112 in the second direction, so that the laser unit is aligned with the defect of the OLED screen body in the second direction.

[0134] The foregoing description is illustrative of the present application and its embodiments, and the description is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the description, without departing from the spirit of the present application, similar structural modes and embodiments can be designed without creativity, which should belong to the protection scope of the present application.

Claims

1. A follow-up module, characterized in that: The device includes a movable platform, a lighting mechanism, and a first sliding rail arranged along a first direction. The movable platform is used to support an OLED screen, and the lighting mechanism is provided with electrical contacts for lighting up the OLED screen. The movable platform and the lighting mechanism are detachably connected, and when connected, they can move synchronously on the first sliding rail. The first sliding rail is provided with a locking mechanism, which locks the lighting mechanism in the first direction when the movable platform and the lighting mechanism are separated. The movable platform is driven to move by a platform drive member provided on the first sliding rail, and the lighting mechanism is pulled / pushed by the movable platform when connected. During the repair phase, the electrical contacts illuminate the OLED screen, and the moving platform and the lighting mechanism move synchronously in the first direction so that the defects of the OLED screen are aligned with the laser unit in the first direction.

2. The follow-up module according to claim 1, characterized in that: The mobile platform and the lighting mechanism are detachably connected via a zero-point positioning mechanism.

3. A follow-up module according to claim 2, characterized in that: The zero-point positioning mechanism includes a zero-point positioning connector and a zero-point positioning seat capable of holding the zero-point positioning connector; the zero-point positioning connector is disposed on the side of the movable platform facing the lighting mechanism, and the zero-point positioning seat is disposed on the lighting mechanism and facing the zero-point positioning connector.

4. A follow-up module according to claim 2, characterized in that: The zero-point positioning mechanism is configured in at least two sets.

5. A follow-up module according to claim 1, characterized in that: The locking mechanism is located inside the first sliding rail. The lower side of the lighting mechanism has a locking hole. The locking head of the locking mechanism locks the lighting mechanism onto the first sliding rail by extending into the lighting mechanism through the locking hole.

6. A follow-up module according to claim 1, characterized in that: The mobile platform includes a platform slide seat that is slidably connected to the first sliding rail. The platform slide seat is provided with a fine-tuning structure. The moving end of the fine-tuning structure is provided with a bearing surface for placing the OLED screen. The fine-tuning structure is used to adjust the relative position between the bearing surface and the platform slide seat.

7. A follow-up module, characterized in that: The device includes a movable platform, a lighting mechanism, and a first sliding rail arranged along a first direction. The movable platform is used to support an OLED screen, and the lighting mechanism is provided with electrical contacts for lighting up the OLED screen. The movable platform and the lighting mechanism are detachably connected by electromagnetic connection, and when the movable platform and the lighting mechanism are connected, they can move synchronously on the first sliding rail to maintain the lighting state of the OLED screen. The first sliding rail is provided with a locking mechanism, which locks and positions the lighting mechanism in the first direction when the movable platform and the lighting mechanism are separated.

8. A follow-up module according to claim 7, characterized in that: An electromagnet is provided on the movable platform, and a second connector made of magnetic or magnetizable material is provided on the lighting mechanism. By controlling the energization / de-energization of the electromagnet, the connection / separation of the movable platform and the lighting mechanism can be realized.

9. A follow-up module according to claim 8, characterized in that: The lighting mechanism is equipped with a buffer, and the compressible end of the buffer is positioned toward the movable platform.

10. A laser repair device for OLED screens, characterized in that: The system includes a base, a gantry and a movable module mounted on the base, and a follow-up module as described in any one of claims 1 to 9. The gantry is fixedly mounted on the base, the movable module is located below the gantry, and the follow-up module is slidably mounted on the movable module. The follow-up module is capable of moving along a second direction on the movable module, and the movable platform and the lighting mechanism of the follow-up module are capable of moving synchronously in a first direction to direct the defects of the OLED screen carried by the movable platform to the laser unit located on the gantry.

11. The OLED screen laser repair device according to claim 10, characterized in that: The following module is configured to be at least two, and at least two following modules are arranged side by side on the moving module.

12. A laser repair device for OLED screens, characterized in that: The device includes a base, a gantry frame mounted on the base, and a follow-up module as described in any one of claims 1 to 9. The gantry frame is fixedly mounted on the base, and a laser unit is mounted on the gantry frame. The follow-up module is located below the gantry frame. The laser unit is slidable along a second direction on the gantry frame, and the moving platform and lighting mechanism of the follow-up module are slidable synchronously in a first direction to direct the defects of the OLED screen carried by the moving platform to the laser unit located on the gantry frame.

13. An OLED screen laser repair device according to any one of claims 10 to 12, characterized in that: The gantry is equipped with a calibration mechanism and / or a testing mechanism. The calibration mechanism is used to collect the relative position information between the OLED screen and the moving stage; the testing mechanism is used to collect the position information of defects on the OLED screen.

14. An OLED screen defect repair system, characterized in that: The device includes a laser repair unit, a loading / unloading unit, and a material transfer unit. The material transfer unit is used to transfer an OLED screen between the laser repair unit and the loading / unloading unit. The laser repair unit includes a base, a gantry frame disposed on the base, and at least one follower module as described in any one of claims 1 to 9. The gantry frame is fixedly disposed on the base, and a laser unit is disposed on the gantry frame. The laser unit and the follower module are capable of relative movement in a second direction, and the moving platform and the lighting mechanism of the follower module are capable of synchronous movement in a first direction to direct the defects of the OLED screen carried by the moving platform to the laser unit located on the gantry frame.

Images