CN112072003B

CN112072003B - OLED screen body back repairing method and OLED screen body double-face repairing method

Info

Publication number: CN112072003B
Application number: CN202010872188.4A
Authority: CN
Inventors: 吴超进; 王正根; 孟祥宽
Original assignee: Suzhou Maxwell Technologies Co Ltd
Current assignee: Maiwei Technology Zhuhai Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2022-06-21
Anticipated expiration: 2040-08-26
Also published as: CN112072003A

Abstract

The invention discloses a method for repairing the back surface of an OLED screen body and a method for repairing the back surface of the OLED screen body, and belongs to the field of production of OLED flexible display screens. The method for repairing the back of the OLED screen body comprises the steps of firstly, overturning the OLED screen body on a loading platform in a posture that the back of the OLED screen body faces upwards by utilizing an overturning plate; then placing the turned OLED screen body on a movable carrier, and lightening the OLED screen body by utilizing an electrical contact of a lightening mechanism; then, the point to be repaired on the back of the OLED screen body is enabled to be aligned to the laser unit in a mode of moving the carrier and the lighting mechanism synchronously; and finally, completing the repair of the point to be repaired by using the laser unit. The method is simple, and the point to be repaired on the back of the OLED screen body placed on the front side can be effectively repaired. The OLED screen body double-face repairing method comprises a front face repairing process and a back face repairing process, switching between the front face and the back face of the OLED screen body is achieved through the turnover plate, the double-face repairing process can be completed quickly and efficiently, and the repairing effect is good.

Description

OLED screen body back repairing method and OLED screen body double-face repairing method

Technical Field

The invention relates to the technical field of OLED flexible display screen processing methods, in particular to an OLED screen body back repairing method and a double-side repairing method.

Background

The biggest difference between the OLED flexible display screen and the liquid crystal display is that the OLED flexible display screen can be bent and deformed, so that curved surface display is realized. In addition, compared with a 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.

In the production process of the OLED flexible display screen, a plurality of detection processes need to be executed, and the purpose is to detect defective products as early as possible and avoid the waste of cost. The detection processes generally include substrate detection, panel detection, screen body detection and the like, and the detection processes are distributed in each link of the production of the OLED flexible display screen. Wherein, when the defective item is detected, the defective item can be simply classified and the repairable defective item can be repaired.

In the related art, a feasible repair method for the screen body of the OLED flexible display screen is generally laser repair, for example, an OLED Cell defect repair device disclosed in chinese patent application No. 2017213293601, which is provided with at least two parallel transportation rails with a moving carrier; and the movable laser repair device can move to the defect position according to the identity information of the corresponding OLED Cel1 to maintain the OLED Cel1, the inclination detection device and the lighting device can control the electric contact of the movable laser repair device to move to the proper position according to the inclination of the position of the OLED Ce11 to be repaired on the movable carrier detected by the inclination detection device, and accurately realize the electric contact with the OLED Ce11, so that the OLED Ce11 is lighted to judge whether the repair is successful or not.

In addition, in the production process of the flexible OLED display screen body, the defect distribution of the flexible OLED display screen body is uncertain easily caused by diversified interference factors, namely, points to be repaired of the flexible OLED display screen body may exist on the front side of the flexible OLED display screen body, may exist on the back side of the flexible OLED display screen body, and may also exist on the front side and the back side of the flexible OLED display screen body.

However, the OLED panel is usually placed in a tray with the front side facing upward before entering the laser repair system, and thus it is difficult to repair the point to be repaired on the back side of the OLED panel by using the laser repair system.

Disclosure of Invention

1. Technical problem to be solved by the invention

In order to overcome the defect that the point to be repaired on the back of the OLED screen body is inconvenient to repair in the prior art, the invention provides the method for repairing the back of the OLED screen body, and aims to efficiently repair the point to be repaired on the back of the OLED screen body.

The invention also aims to provide a double-sided repair method of the OLED screen body, so as to improve the efficiency of laser repair on two sides of the OLED screen body.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

the invention relates to a method for repairing the back of an OLED screen body, which comprises the following steps,

and (3) turning: the OLED screen body is turned over by using a turning plate of the feeding turning mechanism, and the OLED screen body is placed on the feeding carrying platform in a posture that the back face of the OLED screen body faces upwards; then, the OLED screen body on the loading carrier is transferred to a moving carrier positioned at a material moving position;

a preparation stage: the mobile carrier carrying the OLED screen body moves towards the lighting mechanism provided with the electric contacts and converges with the lighting mechanism at an initial position; then, the movable carrier is connected with the lighting mechanism;

and (3) repairing: the electric contact lights the OLED screen body, the movable carrier and the lighting mechanism synchronously move in the first direction to enable the point to be repaired of the OLED screen body to be aligned to the laser unit in the first direction, and the relative distance between the movable carrier and the lighting mechanism and the laser unit is simultaneously adjusted in the second direction to enable the point to be repaired of the OLED screen body to be aligned to the laser unit in the second direction; then, the laser unit finishes repairing the point to be repaired;

and (5) finishing: the movable carrier sends the lighting mechanism back to the initial position; then, the movable stage is separated from the lighting mechanism, and the movable stage returns to the material transfer position.

Further, in a blanking stage after the finishing stage, the OLED screen body is transferred to a turnover plate of the blanking turnover mechanism; then, the OLED screen body is turned over to a blanking carrying platform by a turning plate of the blanking turning mechanism, and the blanking carrying platform moves the OLED screen body to a blanking position for blanking.

Further, in the process that the OLED screen body is transferred onto the turnover plate of the blanking turnover mechanism, the blanking carrying platform moves to the turnover position parallel to the turnover plate.

Further, in a loading stage before the turning stage, the OLED screen body is loaded by a loading and unloading device and is placed on a loading platform; then, in the overturning phase, the OLED screen body is transferred onto an overturning plate of the feeding overturning mechanism by the transferring mechanism.

Furthermore, in the process of turning over the OLED screen body, the plurality of turning-over adsorption discs arranged on the turning plate are utilized to adsorb and fix the OLED screen body.

Further, a plurality of the inverted suction plates form a plurality of suction plate groups suitable for use with non-sized OLED panels.

Further, the group of adsorption trays is formed by four overturning adsorption trays located at each vertex of the same rectangle.

Further, the movable carrier and the spot light mechanism can be connected in a separable mode to realize the conversion of synchronous motion and relative motion.

Furthermore, the movable carrying platform and the lighting mechanism and a first sliding rail for bearing the movable carrying platform and the lighting mechanism form a follow-up module, and the point to be repaired of the OLED screen body is aligned to the laser unit in the second direction by using the mode that the follow-up module moves in the second direction.

The invention relates to a double-sided repair method of an OLED screen body, which comprises a front-side repair process and a back-side repair process, wherein the back-side repair process is carried out according to the back-side repair method;

the front-side repair process includes the steps of,

a judging stage: when the front side of the OLED screen body faces upwards, the OLED screen body is directly placed on the loading platform; when the back of the OLED screen body faces upwards, the OLED screen body is placed on a turnover plate of a feeding turnover mechanism, then the OLED screen body is turned over by the turnover plate, and the OLED screen body is placed on a feeding carrying platform in a posture that the front face of the OLED screen body faces upwards;

a preparation stage: placing the OLED screen body on the feeding carrier on a movable carrier, then moving the movable carrier towards a lighting mechanism provided with an electric contact, and converging the movable carrier with the lighting mechanism at an initial position; then, the movable carrier is connected with the lighting mechanism;

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

(1) the method for repairing the back of the OLED screen body comprises the steps of firstly, overturning the OLED screen body on a loading platform in a posture that the back of the OLED screen body faces upwards by utilizing an overturning plate; then placing the turned OLED screen body on a movable carrier, and lightening the OLED screen body by utilizing an electrical contact of a lightening mechanism; then, the point to be repaired on the back of the OLED screen body is enabled to be aligned to the laser unit in a mode of moving the carrier and the lighting mechanism synchronously; and finally, completing the repair of the point to be repaired by using the laser unit. The method is simple, the point to be repaired on the back of the OLED screen body placed on the front side can be effectively repaired, the repairing effect is good, and the repairing efficiency is high.

(2) According to the invention, the OLED screen body is adsorbed and fixed by utilizing the plurality of overturning adsorption disks arranged on the overturning plate, and then the OLED screen body is overturned by utilizing the overturning plate, so that the OLED screen body can be stably overturned and placed on the loading platform; in addition, a plurality of upset adsorption disc forms a plurality of adsorption disc group, and the adsorption disc group is formed by four upset adsorption discs that are located each summit department of same rectangle, and the rectangle size that every group adsorption disc group corresponds is different, therefore the upset can be realized overturning the not unidimensional OLED screen body, and application scope is wide.

(3) The OLED screen body double-face repairing method comprises a front face repairing process and a back face repairing process, switching between the front face and the back face of the OLED screen body is achieved through the turnover plate, the double-face repairing process can be completed quickly and efficiently, and the repairing effect is good.

Drawings

FIG. 1 is a schematic diagram of a system for implementing the OLED panel backside and dual-side repair method of the present invention;

FIG. 2 is a schematic structural diagram of a laser repair apparatus according to the present invention;

FIG. 3 is a schematic view of the repairing mechanism and the follower module of the present invention;

FIG. 4 is a schematic structural diagram of a servo module according to the present invention;

FIG. 5 is a schematic diagram of a structure of a middle moving stage according to the present invention;

fig. 6 is a schematic structural view of the lighting mechanism of the present invention;

FIG. 7 is a schematic view of the structure of the locking hole of the present invention;

FIG. 8 is a schematic view of the locking mechanism of the present invention;

FIG. 9 is a diagram showing the relationship between the material transfer device and the follower module according to the present invention;

FIG. 10 is a schematic view of the transfer mechanism of the present invention;

fig. 11 is a schematic structural view of the feeding turnover mechanism in the invention.

The reference numerals in the schematic drawings illustrate: 100. a laser repair device; 101. a base; 110. a gantry; 111. a support; 112. a cross beam; 120. a follow-up module; 121. a first sliding rail; 122. moving the carrier; 1221. a bearing surface; 1222. placing bits; 1223. a support rim; 1224. a stage sliding seat; 1225. a fine adjustment mechanism; 1226. a first connecting member; 1227. connecting holes; 123. a lighting mechanism; 1231. a support arm; 1232. a lifting arm; 1233. an electrical contact; 1234. a lighting sliding seat; 1235. a locking hole; 1236. a second connecting member; 1237. a connecting projection; 1238. a buffer member; 1239. a backlight source; 124. a locking mechanism; 1241. a locking head; 1242. a mounting seat; 1243. locking the drive member; 130. a moving module; 131. a second sliding rail; 140. a calibration mechanism; 150. a repair mechanism; 160. a detection mechanism;

200. a material transfer device; 210. a loading platform; 211. loading the material; 212. feeding a sliding rail; 220. a feeding turnover mechanism; 221. a turnover plate; 222. turning over the adsorption disc; 223. a rotating shaft; 230. a blanking carrying platform; 240. a blanking turnover mechanism; 250. a transfer mechanism; 251. transferring the adsorption tray; 252. a rotating arm; 253. an adsorption tray lifting member; 300. a loading and unloading device.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

The structure, proportion, size and the like shown in the drawings are only used for matching with the content disclosed in the specification, so that the person skilled in the art can understand and read the description, and the description is not used for limiting the limit condition of the implementation of the invention, so the method has no technical essence, and any structural modification, proportion relation change or size adjustment still falls within the scope of the technical content disclosed by the invention without affecting the effect and the achievable purpose of the invention. In addition, the terms "upper", "lower", "left", "right" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.

In the related art, the repair of the OLED screen is generally achieved using a laser repair technique. The laser unit for generating laser is arranged on the movable portal frame in a sliding mode, the laser unit can move in a first direction through the movement of the portal frame, and can move in a second direction through the movement of the sliding base in sliding connection with the beam of the portal frame, so that the alignment process of the laser unit and a point to be repaired on the OLED screen body is achieved, and therefore the repairing method can be called as an active laser repairing method of the laser unit.

Specifically, the active laser repair method for the laser unit comprises the following steps:

a preparation stage: the mobile carrier carrying the OLED screen body and the lighting mechanism provided with the electric contacts relatively move in a first direction and converge; after that, the movable stage and the lighting mechanism are connected.

And (3) repairing: the electrical contact lights the OLED screen body, the gantry moves relative to the OLED screen body in the first direction so that the laser unit is aligned to a point to be repaired of the OLED screen body in the first direction, and the laser unit on the sliding base is aligned to the point to be repaired of the OLED screen body in the second direction in a mode of moving the sliding base on the gantry in the second direction; and then, the laser unit finishes repairing the point to be repaired.

And (5) finishing: and the movable carrier returns to the material moving position, and the laser unit returns to the initial position.

The active alignment process of the laser unit has many problems. The problem that the repair effect of the OLED screen body is most easily affected is that the gantry is heavy, and laser units on the gantry are prone to violent shaking or vibration in the moving process, so that the alignment accuracy of the laser units and the OLED screen body is reduced. In addition, the efficiency/effect of laser repair of the OLED screen is reduced due to the problems that more electric energy is consumed for driving the heavy gantry to move frequently, the displacement precision of the gantry relative to the movement of the OLED screen is small, the consumed time of a single gantry moving among a plurality of OLED screens is long, and the like.

In order to solve the above problem, the present embodiment provides a method for repairing an OLED panel by laser, which makes a point to be repaired on the OLED panel align with a laser unit by moving a lighting mechanism and a carrier relative to the laser unit, so as to directly avoid the jitter or vibration of the laser unit.

Specifically, the repairing method of the present embodiment includes the following steps:

And (3) repairing: the electric contact lights the OLED screen body, the movable carrier and the lighting mechanism synchronously move in the first direction to enable the point to be repaired of the OLED screen body to be aligned to the laser unit in the first direction, and the relative distance between the movable carrier and the lighting mechanism and the laser unit is simultaneously adjusted in the second direction to enable the point to be repaired of the OLED screen body to be aligned to the laser unit in the second direction; and then, the laser unit finishes repairing the point to be repaired.

And (5) finishing: the movable carrier returns to the material moving position, and the lighting mechanism returns to the initial position.

It should be noted that the first direction referred to in the present embodiment may be a direction in which both the moving stage and the lighting mechanism are connected, for example, an x direction indicated in the drawing; the second direction may be a direction perpendicular to the first direction and lying in the plane of motion of the moving stage, for example the y-direction as indicated in the figures; the third direction may be a direction perpendicular to the plane of movement of the moving stage, for example the z-direction as identified in the figures.

It is obvious that the first direction, the second direction, or the third direction in this embodiment is not a single direction, but two opposite directions. For example, it is not contradictory that the movement in the first direction may be either forward or backward in the first direction, i.e., the movement in the first direction may refer to movement in the x direction in the drawings or movement in the direction opposite to the x direction in the drawings.

In the repair phase, after the OLED panel is lit by the electrical contacts, in order to achieve synchronous movement of the mobile carrier carrying the OLED panel and the lighting mechanism provided with the electrical contacts in the first direction, the mobile carrier and the lighting mechanism may be connected detachably to achieve conversion between the synchronous movement and the relative movement.

The detachable connection means that the movable carrier and the lighting mechanism can be in a connected state or in a separated state. When the movable carrier and the lighting mechanism are in a separated state, the movable carrier and the lighting mechanism can perform relative motion in a first direction, so that the movable carrier can convey the OLED screen body between the laser repairing device and the upstream and downstream processes of the laser repairing device; when the movable stage and the lighting mechanism are in a connected state, the movable stage and the lighting mechanism may be moved synchronously in the first direction.

It should be noted that the synchronous movement in this embodiment means that when the movable stage and the lighting mechanism move in the first direction at the same time, the movable stage and the lighting mechanism are kept relatively still in the first direction, so as to ensure that the electrical contact of the lighting mechanism and the OLED panel maintain stable electrical connection, and prevent the electrical contact and the OLED panel from short circuit, disconnection and poor contact, thereby preventing the OLED panel from being unable to be repaired.

In order to ensure the stability of the electrical connection between the electrical contact and the OLED panel, the moving stage and the lighting mechanism are connected while being positioned and limited, so that the movement of the moving stage and the lighting mechanism in the first direction is completely synchronous. Therefore, the separable connection mode between the movable carrier and the spot light mechanism can be electromagnetic connection, can also be connection realized through a zero point positioning mechanism, and can also be connection through other connection modes such as snap connection, interference connection, pin connection and the like.

When the movable stage and the lighting mechanism are in a connected state, the synchronous movement of the movable stage and the lighting mechanism in the first direction can be realized by pulling/pushing the lighting mechanism through the movable stage, or can be realized by pulling/pushing the movable stage through the lighting mechanism. Further, the moving stage and the lighting mechanism may be moved, respectively, and the speeds in the first direction of both may be controlled to be the same.

In order to realize the movement of the movable stage and the lighting mechanism in the second direction, the movable stage and the lighting mechanism may be provided on the same first slide rail and formed as a follower module. At this time, the position of the OLED screen body in the second direction may be adjusted by moving the follower module in the second direction, so that the point to be repaired on the OLED screen body is aligned with the laser unit in the second direction.

The follower modules may be provided in more than two, for example in two, or three, or more. Therefore, when one of the follow-up modules executes the repair phase, the other follow-up modules can execute the preparation phase, or execute the finish phase first and then execute the preparation phase. Compared with the method that only one follow-up module is arranged, more than two follow-up modules are arranged, so that the laser unit can repair different OLED screens without waiting for the follow-up modules to finish the finishing stage and the preparation stage, and the repair efficiency of the repair method of the embodiment is improved.

Further, the relative distance between the moving stage and the lighting mechanism and the laser unit may be adjusted by moving the laser unit in the second direction. Although the laser unit still needs to be moved, the gantry itself is fixed, so the jitter of the laser unit is relatively small, and the technical effect to be obtained by the embodiment can be achieved.

In order to implement the repair method provided above, the present embodiment provides a corresponding OLED panel laser repair system, and a specific structure of the repair system will be described below.

Fig. 1 shows a structure of the OLED screen laser repair system of this embodiment, and the system specifically includes a laser repair device 100, a material transfer device 200, and a loading and unloading device 300. According to the step sequence of the whole repairing method, the feeding and discharging device 300 is firstly used for feeding the OLED screen body, then the material transfer device 200 is used for transferring the OLED screen body into the laser repairing device 100, the laser repairing device 100 completes repairing 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 classification and discharging of the OLED screen body.

Fig. 2 shows a structure of the laser repair apparatus 100 in this embodiment, and the laser repair apparatus 100 specifically includes a base 101, and a gantry 110, a moving module 130 and a plurality of follower modules 120 that are disposed on the base 101. 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 body; the calibration mechanism 140 is configured to acquire relative position information between the OLED screen and the mobile carrier 122; the detection mechanism 160 is used for collecting information of a point to be repaired on the OLED screen body.

The gantry 110 may include two brackets 111, and a beam 112 connected between the two brackets 111. The support 111 is fixedly connected with the base 101, and the beam 112 is fixed relative to the base 101.

Fig. 3 shows the matching relationship between the repairing mechanism 150 and the follower module 120 in this embodiment. The moving stage 122 and the lighting mechanism 123 of the follow-up module 120 can move in the first direction synchronously, and the follow-up module 120 can move on the moving module 130 in the second direction, so that the repair mechanism 150 can be aligned and positioned with the OLED screen body carried on the follow-up module 120, and the repair process of the repair mechanism 150 on the OLED screen body can be realized.

Fig. 4 shows a specific structure of the follower module 120 in the present embodiment. Specifically, the follow-up module 120 may include a first sliding rail 121, a moving stage 122, and a lighting mechanism 123. The first slide rail 121 may be provided along the first direction, and the moving stage 122 and the lighting mechanism 123 may be provided to slide on the first slide rail 121, so that the moving stage 122 and the lighting mechanism 123 may move along the first direction.

In the repair process, the point to be repaired of the OLED panel may be aligned with the laser unit in the first direction by moving the first sliding rail in the second direction, and 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 disposed on the second sliding rail 131, and the OLED panel carried on the movable stage 122 and the laser unit are aligned in the first direction by the way that the first sliding rail 121 integrally slides on the second sliding rail 131.

In this embodiment, two follow-up modules 120 are provided, and the two follow-up modules 120 are disposed on the moving module 130 side by side. The two follow-up modules 120 can be alternately moved to the position below the repair mechanism 150, so that the moving stages 122 on different follow-up modules 120 are respectively moved to the positions corresponding to the laser units.

Fig. 5 shows a specific structure of the moving stage 122 in this example. Specifically, the moving stage 122 may include a stage slide 1224, a first connector 1226, and a bearing surface 1221. Wherein, the stage slide base 1224 is slidably connected to the first slide rail 121; the bearing surface 1221 is located on the stage sliding base 1224 and is used for bearing the OLED screen; the first connector 1226 is provided on the stage slider 1224 on the side facing the lighting mechanism 123, and is connected to the lighting mechanism 123.

The carrying surface 1221 is provided with a plurality of placing positions 1222, the different placing positions 1222 have different sizes, but all the placing positions 1222 close to the lighting mechanism 123 are aligned, so that the electrical contacts 1233 can conveniently light the OLED screens with different sizes. A supporting edge 1223 may be disposed on a side of the supporting surface 1221 close to the lighting mechanism 123, and the supporting edge 1223 may be disposed to protrude from the supporting surface 1221, and is used for placing an edge of the OLED screen contacting the electrical contact 1233. The supporting edge 1223 may be provided with micro holes for adsorbing the OLED panel. In addition, a backlight bar for providing a light source may be disposed on the supporting rim 1223 to illuminate the OLED screen body.

In order to precisely adjust the relative position between the OLED panel and the electrical contact 1233, and ensure the accuracy and stability of the electrical connection between the electrical contact 1233 and the OLED panel, the fine adjustment mechanism 1225 is further disposed on the moving stage 122 of this embodiment. Specifically, the fine adjustment mechanism 1225 may be disposed on the stage sliding base 1224, the bearing surface 1221 is disposed on the moving end of the fine adjustment mechanism 1225, and the position of the bearing surface 1221 relative to the electrical contact 1233 is adjusted by the fine adjustment mechanism 1225, so as to complete fine adjustment of the position between the electrical contact 1233 and the OLED screen.

The fine adjustment mechanism 1225 may include a first fine adjustment rail and a second fine adjustment rail that are perpendicular to each other, and a rotation axis, where the first fine adjustment rail and the second fine adjustment rail are perpendicular to each other, the first fine adjustment rail is slidably disposed on the stage sliding base 1224, the second fine adjustment rail is slidably disposed on the first fine adjustment rail, the rotation axis is disposed on the second fine adjustment rail, and the bearing surface 1221 is disposed on the rotation axis, so that the bearing surface 1221 may adjust a position and an angle in two directions with respect to the stage sliding base 1224, thereby adjusting a relative position between the OLED panel and the electrical contact 1233 on the bearing surface 1221.

In addition, referring to fig. 6, the fine adjustment mechanism 1225 of this embodiment may also be an XY θ positioning platform commonly used in the related art to finely adjust the position of an object to be positioned in two directions, such as, but not limited to, the XY θ positioning platform disclosed in chinese patent application No. 2018201100157. It should be noted that the specific structure of the XY θ positioning stage is not limited as long as the adjustment of the position of the bearing surface 1221 in two directions with respect to the stage slide 1224 can be achieved.

Fig. 6 shows the structure of the lighting mechanism 123 of the present embodiment. Specifically, the lighting mechanism 123 may include a lighting slider 1234, a second connector 1236, and electrical contacts 1233. The lighting slider 1234 is slidably connected to the first sliding rail 121; the second connecting part 1236 is arranged on the first sliding rail 121 on a side facing the moving stage 122, and is matched with the first connecting part 1226 to realize connection between the moving stage 122 and the spot light mechanism 123; the electrical contact 1233 is disposed on the first sliding rail 121 and can move in the third direction relative to the first sliding rail 121, 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 and contact with the OLED screen to achieve electrical connection.

The lighting slider 1234 may have a support arm 1231, a lift arm 1232 slidably provided on the support arm 1231, and an electric contact 1233 provided on the lift arm 1232. The lifting arm 1232 is specifically driven by a lifting driver provided on the support arm 1231 or the lighting slider 1234, and the lifting driver may be one of an air cylinder, a hydraulic cylinder, and a motor, and is not particularly limited as long as the lifting arm 1232 can slide in the third direction.

After the movable carrier 122 is connected to the lighting mechanism 123, the electrical contact 1233 is located above the OLED panel, and at this time, the lifting driving member drives the lifting arm 1232 to move toward the OLED panel, so that the electrical contact 1233 is in contact with the OLED panel to achieve electrical connection.

Referring to fig. 4, the movable stage 122 and the lighting mechanism 123 can be connected by the connection hole 1227 and the connection protrusion 1237. A plurality of coupling claws which can move in the radial direction of the coupling protrusion 1237 are provided in the coupling hole 1227. When connecting, after the connecting protrusion 1237 is inserted into the connecting hole 1227, the connecting claws may be extended radially along the connecting protrusion 1237, and the connecting protrusion 1237 may be clamped by a plurality of connecting claws.

In addition, the present embodiment may also realize separable connection through a zero point positioning mechanism, and specifically, the present embodiment may be a zero point positioning mechanism commonly used for realizing positioning connection of two components in the related art, for example, but not limited to, the zero point positioning device disclosed in chinese patent application No. 2019211271594, and the specific structure of the zero point positioning mechanism of the present embodiment is not limited as long as the connection between the movable stage 122 and the spot light mechanism 123 can be realized.

As an embodiment, the zero point positioning joint of the zero point positioning mechanism may be disposed on the first connecting member 1226, and the zero point positioning seat may be disposed on the second connecting member 1236; as another embodiment, the zero point positioning joint may be disposed on the second connecting member 1236, and the zero point positioning seat may be disposed on the first connecting member 1226. During connection, after the zero point positioning joint extends into the zero point positioning seat, the zero point positioning joint is clamped tightly by utilizing the zero point positioning seat through air pressure, oil pressure or mechanical force, so that the connection between the movable carrier 122 and the spot light mechanism 123 is realized.

The specific process and the corresponding principle of clamping the zero point positioning joint by the zero point positioning seat can be implemented by referring to the scheme disclosed in the related field or according to the mode suggested by the manufacturer, so that the related contents are not repeated in this embodiment.

In order to improve the connection stability and the positioning effect between the moving stage 122 and the spot mechanism 123, the zero point positioning mechanism may be provided in more than two groups, for example, two groups, or three groups, or more groups. Specifically, the zero point positioning seats of all the zero point positioning mechanisms may be arranged on the mobile carrier 122; the zero point chucks of all the zero point positioning mechanisms can also be arranged on the movable stage 122; a part of the zero point positioning base may be provided on the movable stage 122, and another part of the zero point positioning base may be provided on the lighting mechanism 123. The setting mode of the zero point positioning mechanism is not limited.

In addition, the movable stage 122 and the spot light mechanism 123 may be connected detachably by means of an electromagnetic connection. Specifically, as an embodiment, the first connection element 1226 may be an electromagnet, which can generate a magnetic force when being powered on, so as to attract the second connection element 1236 made of a magnetic material or a magnetizable material to the first connection element 1226, thereby realizing the connection between the first connection element 1226 and the second connection element 1236; when the electromagnet is powered off, the first connecting member 1226 no longer has magnetic force, and the first connecting member 1226 and the second connecting member 1236 are no longer attracted to each other, so that the movable stage 122 and the lighting mechanism 123 are separated.

As another example, the second coupling element 1236 may be an electromagnet, and the first coupling element 1226 may be made of a magnetic or magnetizable material, such that the second coupling element 1236 may attract the first coupling element 1226 when it is energized, while the first coupling element 1226 and the second coupling element 1236 are separated when the second coupling element 1236 is de-energized.

The first connector 1226 and the second connector 1236 may both be electromagnets, and when the first connector 1226 and the second connector 1236 are both powered on, the first connector 1226 and the second connector 1236 generate magnetic fields that attract each other, so that the movable stage 122 and the lighting mechanism 123 can attract each other.

In the present embodiment, as an example, when the movable stage 122 and the lighting mechanism 123 are in a separated state, the two can move independently in the first direction, so as to complete convergence; as another example, when the moving stage 122 and the lighting mechanism 123 are in the separated state, the lighting mechanism 123 cannot move in the first direction, that is, the lighting mechanism 123 can only be pulled/pushed by the moving stage 122 to move in the first direction.

Specifically, the movable stage 122 may be driven to move by a stage driving member disposed on the first sliding rail 121, the stage driving member may be an air cylinder, a hydraulic cylinder, or a motor, and the specific type of the stage driving member is not limited. The lighting mechanism 123 is slidably connected only to the first slide rail 121. When the movable stage 122 and the lighting mechanism 123 are in a connected state, the movable stage 122 may drive the lighting mechanism 123 to slide along the first sliding rail 121; when the moving stage 122 and the lighting mechanism 123 are in the separated state, the lighting mechanism 123 stays on the first slide rail 121, and the position thereof in the first direction does not change.

When the movable stage 122 moves toward the lighting mechanism 123 while carrying the OLED panel, the movable stage 122 may contact the lighting mechanism 123, which causes the lighting mechanism 123 to move, making it difficult to accurately connect the movable stage 122 and the lighting mechanism 123. Therefore, when the moving stage 122 and the lighting mechanism 123 are in the separated state, the lighting mechanism 123 can be fixed on the first slide rail 121, thereby facilitating the connection between the moving stage 122 and the lighting mechanism 123.

Fig. 7 shows the structure of the lock hole 1235 in the present embodiment, and fig. 8 shows the structure of the lock mechanism 124 in the present embodiment. Specifically, a locking hole 1235 may be formed in the lower side surface of the lighting slide holder 1234, and the locking mechanism 124, for example, the first sliding rail 121, may be disposed below the lighting slide holder 1234. By extending and contracting the lock head 1241 of the lock mechanism 124, the lock hole 1235 of the lock mechanism 124 is engaged, and the lock/release of the lighting mechanism 123 by the lock mechanism 124 is completed.

Specifically, the locking mechanism 124 can include a mount 1242, and a lock drive 1243 disposed on the mount 1242. The moving end of the locking driving member 1243 is connected to the locking head 1241 for driving the locking head 1241 to extend and retract relative to the mounting seat 1242.

The locking hole 1235 may be opened on a side surface of the lighting mechanism 123 or on a top surface, for example, a side surface of the support arm 1231. The position of the locking mechanism 124 corresponds to the position of the locking hole 1235, while the locking head 1241 is extended and contracted in the direction perpendicular to the first direction.

Further, the lighting mechanism 123 may be provided with a lock head 1241, and the lock mechanism 124 for opening the lock hole 1235 may be provided at a position corresponding to the lock head 1241. For example, when the locking head 1241 is provided on the lower side of the lighting slide holder 1234 of the lighting mechanism 123, the locking mechanism 124 may be provided on the first slide rail 121 such that the locking head 1241 is provided toward the locking mechanism 124, and the locking hole 1235 may be opened in the locking mechanism 124 on a surface facing the locking head 1241.

In the present embodiment, a buffer 1238 may be provided between the lighting mechanism 123 and the moving stage 122 in order to reduce the impact of the moving stage 122 on the lighting mechanism 123 when the lighting mechanism 123 and the lock mechanism 124 are engaged. The buffer 1238 may be disposed on the lighting mechanism 123, with the compressible end of the buffer 1238 disposed toward the mobile carrier 122; the buffer 1238 may be provided on the moving stage 122, and the compressible end of the buffer 1238 may be provided toward the lighting mechanism 123.

A backlight 1239 may also be disposed on the second connector 1236, the backlight 1239 being disposed toward the electrical contacts 1233. After the movable stage 122 and the lighting mechanism 123 are connected in a converging manner, the supporting edge 1223 is located between the backlight source 1239 and the electrical contact 1233, and after the OLED screen is lit, the backlight source 1239 is also lit for providing backlight to the OLED screen, so that the detection mechanism 160 can conveniently detect the position of the point to be repaired on the OLED screen.

The loading and unloading device 300 is provided with a feeding station F, a temporary storage station S and a plurality of unloading stations G. After the carrying disc loaded with the plurality of OLED screens reaches the feeding station F, the OLED screens on the carrying disc are sequentially transferred away by the material transfer device 200, and the empty carrying disc is conveyed into the blanking station G; when the unloading station G is provided with the carrier disc which is not filled, the empty carrier disc is conveyed to a temporary storage station S; when the blanking station G needs the empty carrying disc and the carrying disc of the feeding station F still carries the OLED screen body, the empty carrying disc is taken out from the temporary storage station S and is placed in the corresponding blanking station G.

In the related art, after the repair of the OLED panel is completed, it is generally required to perform detection and repair effect evaluation on the OLED panel, and divide the OLED panel into several levels according to the result. Therefore, the loading and unloading device 300 of the embodiment is provided with three unloading stations G, namely, the unloading station G1, the unloading station G2 and the unloading station G3, which correspond to three different levels respectively. Of course, the number of the blanking stations G is not limited, and different numbers of blanking stations G can be set according to specific implementation conditions.

Fig. 9 shows the matching relationship of the material transfer device and the follower module. The material transferring device 200 may comprise a transferring mechanism 250 and several stocking stations for placing/transporting OLED panels.

In order to repair the back of the OLED screen body by the repair system of this embodiment, the plurality of material storage stations may include a feeding stage 210, a feeding turnover mechanism 220, a discharging stage 230, and a discharging turnover mechanism 240. The feeding carrier 210 is communicated with the feeding station F, and the OLED screen body can be transferred between the feeding carrier 210 and the feeding station F; the feeding turnover mechanism 220 can turn over the OLED screen body and place the OLED screen body on the feeding carrier 210; the blanking carrying platform 230 is communicated with the blanking station G, and the OLED screen body can be transferred between the blanking carrying platform 230 and the blanking station G; the blanking turnover mechanism 240 can turn over the OLED screen body and place the OLED screen body on the blanking carrier 230.

Fig. 10 shows the structure of the transfer mechanism 250. The transfer mechanism 250 can transfer the OLED screens on different material storage stations. Specifically, the transfer mechanism 250 may include a plurality of rotating arms 252 disposed in the same plane and rotatably connected to each other, an adsorption tray lifting member 253 is disposed on the endmost rotating arm 252, and a transfer adsorption tray 251 is disposed on a moving end of the adsorption tray lifting member 253.

The number of arms 252 may be set according to the overall size of the material transfer device 200. When the number of the swing arms 252 is different, the transfer mechanism 250 may be formed as a four-axis robot, a five-axis robot, or a six-axis robot. The transfer mechanism 250 may also be a mechanism commonly used in the related art for transferring OLED panels.

The transfer mechanism 250 adjusts the different rotation angle of each rotating arm 252, so that the transfer adsorption disc 251 can stay at any position in the web of the transfer mechanism 250, and then the transfer adsorption disc 251 can be driven by the adsorption disc lifting piece 253 to lift, thereby completing the lifting/falling of the OLED screen body relative to the storage station.

In addition, the transfer mechanism 250 can also transfer the OLED screen between the material storage station and the movable carrier 122, so that the transfer efficiency of the OLED screen between the laser repair device 100 and the material transfer device 200 is improved.

Of course, the transfer mechanism 250 can also transfer the OLED panels between the feeding and discharging device 300 and the material transfer device 200. However, when the size of the laser repair system is large and the transfer mechanism 250 can not cover the loading and unloading device 300, the loading and unloading transfer mechanism can be arranged on the loading and unloading device 300, so that the OLED screen body can be transferred between the loading stage 210 and the feeding station F, and the OLED screen body can be transferred between the unloading stage 230 and the unloading station G. The feeding and discharging transfer mechanism can be a four-axis manipulator with a vacuum chuck, a five-axis manipulator or a mechanism commonly used for transferring OLED screens in the related field.

Fig. 11 shows the structure of the loading and overturning mechanism 220 in this embodiment. Specifically, the feeding turnover mechanism 220 may include a fixing base, and a turnover plate 221 rotatably connected to the fixing base. The flipping panel 221 may be rotated by a rotation shaft 223, and the panel surface of the flipping panel 221 is disposed parallel to the rotation shaft 223.

The upper side of the turnover plate 221 is provided with a plurality of turnover adsorption discs 222, and the OLED screen body is adsorbed on the turnover plate 221 through the turnover adsorption discs 222, so that the OLED screen body is prevented from falling off in the turnover process.

The plurality of turnover adsorption trays 222 are formed with a plurality of adsorption tray groups, and the size of each adsorption tray group is different, so that the turnover plate 221 can stably adsorb OLED screens with different sizes.

The number of the inverted adsorption trays 222 for constituting one adsorption tray group may be set to four, and the four inverted adsorption trays 222 may be located at each vertex of the same rectangle. Meanwhile, the positions of the turnover adsorption disc 222 can correspond to the positions of four vertexes of the OLED screen body, so that the stability of the turnover plate 221 on adsorption of the OLED screen body is improved. Further, different groups of discs may share the same inverted suction disc 222.

Different adsorption plate groups can be stacked from small to large, namely, the adsorption plate group with a small size can be arranged in the adsorption plate group with a large size, so that the larger the size of the OLED screen body adsorbed by the turnover plate 221 is, the more the turnover adsorption plate 222 for adsorbing the OLED screen body is, and the stability of the turnover plate 221 for adsorbing the OLED screen body is further improved.

The feeding stage 210 is attached to the feeding and turning mechanism 220, the feeding stage 210 is disposed on a feeding sliding rail 212 disposed along the first direction, and the feeding stage 210 can slide on the feeding sliding rail 212. The upper side surface of the loading carrier 210 is a loading position 211, and the loading position 211 can be set to be multiple according to the size of the OLED screen.

The feeding sliding rail 212 is arranged between the laser repairing device 100 and the feeding and discharging device 300, the feeding turnover mechanism 220 is arranged on one side of the feeding sliding rail 212, one end, close to the feeding and discharging device 300, of the feeding sliding rail 212 is a feeding position, the position, corresponding to the turnover plate 221 of the feeding turnover mechanism 220, of the feeding sliding rail 212 is a turnover position, and one end, close to the laser repairing device 100, of the feeding sliding rail 212 is a material moving and feeding position.

The discharging carrying platform 230 of the material transfer device 200 is basically the same as the feeding carrying platform 210, and the discharging turnover mechanism 240 is basically the same as the feeding turnover mechanism 220. The difference between the discharging carrier 230 and the feeding carrier 210, and between the discharging turnover mechanism 240 and the feeding turnover mechanism 220 is only that the placing position and the realized function are different, and the discharging carrier 230 and the discharging turnover mechanism 240 are specifically used for conveying and turning over at the discharging stage after the repair of the OLED screen body is completed, so that the relevant contents are not described in detail in this embodiment.

The method for performing laser repair on the front surface of the OLED panel by using the repair system of the present embodiment will be described below.

When the follower modules are arranged as a group, a specific method may include the following stages,

1. a feeding stage:

step 1.1, the OLED screen body located at the feeding station F of the loading and unloading device 300 is transferred to the loading carrier 210 located at the loading position.

2. A preparation stage:

and 2.1, transferring the OLED screen body on the loading carrier 210 to the moving carrier 122 at the material moving position.

Step 2.2, the moving carrier 122 carries the OLED screen to move toward the lighting mechanism 123 located at the initial position, and converges with the lighting mechanism 123 at the initial position.

And 2.3, completing connection of the movable carrier 122 and the lighting mechanism 123.

Step 2.4, the position of the bearing surface 1221 is adjusted by the movable stage 122 through the fine adjustment mechanism 1225, so that the OLED screen corresponds to the position of the electrical contact 1233; electrical contact 1233 then moves toward and contacts the OLED screen.

The process of adjusting the position of the carrying surface 1221 of the movable stage 122 by the fine adjustment mechanism 1225 can be completed before the movable stage 122 is connected to the lighting mechanism 123, that is, after the fine adjustment mechanism 1225 has adjusted the positions of the OLED screen and the electrical contacts 1233, the movable stage 122 is connected to the lighting mechanism 123 by the zero positioning mechanism.

3. And (3) repairing:

step 3.1, the electrical contacts 1233 illuminate the OLED screen.

In step 3.2, the locking head 1241 of the locking mechanism 124 retracts, the lighting mechanism 123 moves in the first direction along the first sliding rail 121 under the traction of the moving stage 122, and the point to be repaired on the OLED screen is aligned with the laser unit in the first direction.

And 3.3, moving the follow-up module at the initial position along the second sliding rail 131 in the second direction, and enabling the point to be repaired on the OLED screen body to be aligned to the laser unit in the second direction.

And 3.4, after the to-be-repaired point on the OLED screen body is aligned with the finished position of the laser unit, performing laser repair on the to-be-repaired point on the OLED screen body by the laser unit.

The step 3.2 and the step 3.3 can be performed synchronously, so that the time required for aligning the to-be-repaired point on the OLED screen body with the position of the laser unit is reduced, and the laser repair efficiency is improved.

4. And (5) finishing:

step 4.1, the follower module moves along the second sliding rail 131 in the second direction, so that the follower module returns to the initial position.

Step 4.2, the lighting mechanism 123 moves in the first direction along the first sliding rail 121 under the pushing of the moving stage 122, so that the lighting mechanism 123 returns to the initial position; the locking head 1241 of the locking mechanism 124 is extended and locks the lighting mechanism 123.

And 4.3, extinguishing the OLED screen body, and enabling the electric contact 1233 to be separated from the OLED screen body and move away from the OLED screen body.

And 4.4, separating the movable carrying platform 122 from the lighting mechanism 123 through a zero point positioning mechanism, wherein the movable carrying platform 122 bears the OLED screen body and returns to the material moving position.

Wherein, step 4.1 and step 4.2 can be carried out simultaneously, thus improving the laser repair efficiency. Step 4.3 may be performed at any time between step 4.4 and step 4.4, such as between step 4.4 and step 4.1, such as between step 4.1 and step 4.2, such as simultaneously with step 4.1 and step 4.2.

5. A blanking stage:

step 5.1, after the OLED screen body is transferred to a blanking carrying platform, the blanking carrying platform moves the OLED screen body to a blanking position; and then transferring the OLED screen body to a blanking station G to finish blanking.

When the follow-up modules are arranged into two groups or more than two groups, in the process of executing the repair stage, the other follow-up modules can execute the ending stage and the starting stage, so that the waiting time of the laser unit is reduced as much as possible, and the efficiency of laser repair is improved.

In addition, when one group of follow-up modules finishes the repair stage, the other group of follow-up modules can immediately start to execute the repair stage, namely when one group of follow-up modules finishes the repair stage and starts to execute the finish stage, the other group of follow-up modules can start to execute the repair stage, namely when the previous follow-up module is far away from the lower part of the laser unit in the first direction and the second direction, the next module starts to move towards the lower part of the laser unit in the first direction and the second direction, and alignment of the point to be repaired of the OLED screen body and the position of the laser unit is completed.

The method for performing laser repair on the back surface of the OLED panel by using the repair system of the present embodiment will be described below.

1. A feeding stage:

2. And (3) turning:

step 2.1, placing the OLED screen body on a turnover plate 221 of the feeding turnover mechanism 220, then utilizing the turnover plate 221 to turn over the OLED screen body, and placing the OLED screen body on the feeding carrier 210 in a posture that the back face of the OLED screen body faces upwards.

2.2, transferring the OLED screen body on the loading carrier to a moving carrier positioned at the material moving position;

3. a preparation stage:

and 3.1, transferring the OLED screen body on the loading carrier 210 to the moving carrier 122 at the material moving position.

Step 3.2, the moving stage 122 carries the OLED panel to move toward the lighting mechanism 123 located at the initial position, and converges with the lighting mechanism 123 at the initial position.

And 3.3, completing connection of the movable carrier 122 and the spot light mechanism 123.

Step 3.4, the position of the bearing surface 1221 is adjusted by the movable stage 122 through the fine adjustment mechanism 1225, so that the OLED screen corresponds to the position of the electrical contact 1233; electrical contact 1233 then moves toward and contacts the OLED screen.

4. And (3) repairing:

and 4.1, lighting the OLED screen body by the electric contact 1233.

In step 4.2, the locking head 1241 of the locking mechanism 124 retracts, the lighting mechanism 123 moves along the first sliding rail 121 in the first direction under the traction of the moving stage 122, and the point to be repaired on the OLED screen is aligned with the laser unit in the first direction.

And 4.3, moving the follow-up module at the initial position along the second sliding rail 131 in the second direction, and enabling the point to be repaired on the OLED screen body to be aligned to the laser unit in the second direction.

And 4.4, after the to-be-repaired point on the OLED screen body is aligned with the finished position of the laser unit, performing laser repair on the to-be-repaired point on the OLED screen body by the laser unit.

5. And (5) finishing:

step 5.1, the follower module moves along the second sliding rail 131 in the second direction, so that the follower module returns to the initial position.

Step 5.2, the lighting mechanism 123 moves in the first direction along the first sliding rail 121 under the pushing of the moving stage 122, so that the lighting mechanism 123 returns to the initial position; the locking head 1241 of the locking mechanism 124 is extended and locks the lighting mechanism 123.

And 5.3, extinguishing the OLED screen body, and enabling the electric contact 1233 to be separated from the OLED screen body and move away from the OLED screen body.

And 5.4, separating the movable carrying platform 122 from the lighting mechanism 123 through a zero point positioning mechanism, wherein the movable carrying platform 122 bears the OLED screen body and returns to the material moving position.

6. A blanking stage:

and 6.1, transferring the OLED screen body onto a turnover plate of a blanking turnover mechanism 240, moving the blanking carrying platform to a turnover position parallel to the turnover plate, turning the OLED screen body by the turnover plate, and placing the OLED screen body on the blanking carrying platform in a posture with the front side upward.

6.2, moving the OLED screen body to a blanking position by a blanking carrying platform; and then transferring the OLED screen body to a blanking station G to finish blanking.

When the two or more sets of the follow-up modules are arranged, the repair stage of the back repair method of the OLED panel may refer to the repair stage of the front repair method, and the two are not substantially different, so that the related contents are not described in detail in this embodiment.

The embodiment also provides an OLED screen body double-sided repairing method. Specifically, the double-sided repair method may include a front-side repair process and a back-side repair process. The front repair process may be performed according to the method for repairing the front of the OLED panel in this embodiment, and the back repair process may be performed according to the method for repairing the back of the OLED panel in this embodiment.

Of course, it should be understood that, when the front repair process and the back repair process are performed on the same OLED panel, only one feeding stage and one discharging stage need to be performed, and the feeding stage and the discharging stage in the connection of the front repair process and the back repair process are omitted.

In addition, for the same OLED screen body, no matter the back is repaired firstly, or the front is repaired firstly, then the back is repaired, before the preparation stage of the back repairing process, the OLED screen body is placed on the loading platform in a posture that the front faces upwards, and therefore the back repairing process needs to execute the overturning stage.

However, different from the back repairing process, when the front repairing process of the OLED screen body is carried out, the front repairing is carried out firstly, and the OLED screen body is placed on the feeding carrier in a posture that the front is upward without being turned over; when the back repair is firstly carried out and then the front repair is carried out, the OLED screen body is placed on the feeding carrying platform in a posture that the back face is upward, so that the OLED screen body needs to be turned over. Therefore, in the double-sided repair method for the OLED panel, before the preparation stage, a judgment stage needs to be performed once to ensure that the OLED panel is in a posture with the front side facing upwards when entering the laser repair device.

The specific process of the judging stage is as follows:

when the front side of the OLED screen body faces upwards, the OLED screen body is directly placed on the loading platform; when the back of the OLED screen body faces upwards, the OLED screen body is placed on the turnover plate of the feeding turnover mechanism, then the turnover plate is utilized to turn over the OLED screen body, and the OLED screen body is placed on the feeding carrying platform in a posture that the front face of the OLED screen body faces upwards.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, without departing from the spirit of the present invention, a person of ordinary skill in the art should understand that the present invention shall not be limited to the embodiments and the similar structural modes without creative design.

Claims

1. The method for repairing the back of the OLED screen body is characterized by comprising the following steps: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

and (3) turning: the method comprises the following steps of firstly placing an OLED screen body on a turnover plate of a feeding turnover mechanism, then utilizing the turnover plate to turn over the OLED screen body, and placing the OLED screen body on a feeding carrying platform in a posture that the back face of the OLED screen body is upward; then, the OLED screen body on the loading carrier is transferred to a moving carrier positioned at a material moving position;

and (5) finishing: the movable carrier sends the lighting mechanism back to the initial position; then, the movable carrier is separated from the lighting mechanism, and the movable carrier returns to the material moving position; wherein, the mobile carrier sends back the lighting mechanism to the initial position as follows: the lighting mechanism moves in a first direction along the first sliding rail under the pushing of the moving carrier, so that the lighting mechanism returns to an initial position;

the locking mechanism is arranged on the first sliding rail; the locking mechanism locks/releases the lighting mechanism; the conversion of synchronous motion and relative motion is realized between the movable carrier and the spot light mechanism through a separable connection mode.

2. The method for repairing the back of the OLED screen body as claimed in claim 1, wherein: in the blanking stage after the finishing stage, the OLED screen body is firstly transferred to a turnover plate of the blanking turnover mechanism and then is turned over to a blanking carrying platform by the turnover plate of the blanking turnover mechanism; and then, the blanking carrying platform moves the OLED screen body to a blanking position for blanking.

3. The method for repairing the back of the OLED screen body as claimed in claim 2, wherein: in the process that the OLED screen body is transferred onto the turnover plate of the blanking turnover mechanism, the blanking carrying platform moves to the turnover position parallel to the turnover plate.

4. The method for repairing the back of the OLED screen body as claimed in claim 1, wherein: in the feeding stage before the turning stage, the OLED screen body is fed by a feeding and discharging device and is placed on a feeding carrying platform; then, in the overturning stage, the OLED screen body is transferred onto an overturning plate of the feeding overturning mechanism by the transfer mechanism.

5. The method for repairing the back surface of the OLED screen body as claimed in any one of claims 1 to 4, wherein: in the process of turning the OLED screen body, the OLED screen body is fixedly adsorbed by the aid of the plurality of turning adsorption disks arranged on the turning plate.

6. The method for repairing the back surface of the OLED screen body according to claim 5, wherein: a plurality of the inverted suction cups form a plurality of suction cup groups adapted for use with non-sized OLED panels.

7. The method for repairing the back surface of the OLED screen body according to claim 6, wherein: the adsorption disc group is formed by four overturning adsorption discs positioned at each vertex of the same rectangle.

8. The method for repairing the back of the OLED screen body as claimed in claim 1, wherein: the movable carrier and the spot lighting mechanism and a first sliding rail for bearing the movable carrier and the spot lighting mechanism form a follow-up module, and the spot to be repaired of the OLED screen body is aligned to the laser unit in the second direction by utilizing the mode that the follow-up module moves in the second direction.

9. A double-sided repair method for an OLED screen body is characterized by comprising the following steps: the method comprises a front repairing process and a back repairing process, wherein the back repairing process is carried out according to the back repairing method of claim 1;

the front-side repair process includes the steps of,

a preparation stage: placing the OLED screen body on the feeding carrier on a movable carrier, then moving the movable carrier towards a lighting mechanism provided with an electric contact, and converging the lighting mechanism at an initial position; then, the movable carrier is connected with the lighting mechanism;

and (3) repairing: the electrical contact lights the OLED screen body, the movable carrier and the lighting mechanism synchronously move in the first direction so that the point to be repaired of the OLED screen body is aligned with the laser unit in the first direction, and the relative distance between the movable carrier and the lighting mechanism and the laser unit is simultaneously adjusted in the second direction so that the point to be repaired of the OLED screen body is aligned with the laser unit in the second direction; then, the laser unit finishes repairing the point to be repaired;