CN114434767B

CN114434767B - Preparation method of polaroid compensation film for OLED flexible display

Info

Publication number: CN114434767B
Application number: CN202111643150.0A
Authority: CN
Inventors: 竹文坤; 何嵘; 孙囡; 陈涛; 罗林; 袁长迎; 马寒冰
Original assignee: Southwest University of Science and Technology
Current assignee: Southwest University of Science and Technology
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2023-09-12
Anticipated expiration: 2041-12-29
Also published as: CN114434767A

Abstract

The invention discloses a preparation method of a polaroid compensation film for OLED flexible display, which comprises the following steps: step one, preparing a pair of molten bodies from a high polymer forming a polarizer compensation film through a melting machine; step two, preparing the molten mass obtained in the step one into a sheet or thick film through an elongated machine head matched with a melting machine; step three, conveying the material to synchronous optical oblique stretching equipment through a first transmission assembly to perform synchronous oblique stretching treatment; and fourthly, performing rim charge cutting treatment through two cutter assemblies arranged at two ends of the outlet of the synchronous optical oblique stretching device. The invention provides a preparation method of a polaroid compensation film for OLED flexible display, which simplifies the production process of the compensation film by limiting the process, and sets the production of a base film and the production of the compensation film on a continuous production line, so that the utilization of a production field can be maximized, the links of intermediate unnecessary material rolling, stacking and the like are simplified, and the yield is improved.

Description

Preparation method of polaroid compensation film for OLED flexible display

Technical Field

The invention relates to a method for processing a film. More particularly, the invention relates to the preparation of a polarizer compensation film for OLED flexible display.

Background

The preparation process of the polarizer compensation film generally comprises a base film manufacturing process technology and an optical compensation film manufacturing technology, in practical application, the base film manufacturing is the basis of the polarizing film manufacturing, mainly uses raw materials such as COP, PMMA, modified PC and the like, processes the raw materials into film coiled materials through batching, a plurality of hot processing steps and process quality detection, and supplies the film coiled materials to a stretching process to manufacture the polarizing film, the base film manufacturing process flow chart is shown in fig. 5, the optical compensation film manufacturing technology is realized through a synchronous biaxial stretching manufacturing process technology, and is the core technology of optical compensation film stretching manufacturing (the molecular structure arrangement of the improved film material realizes special characteristics), and the conventional synchronous biaxial stretching manufacturing process technology only can realize transverse and longitudinal stretching, so that the molecular arrangement structure of the film material cannot meet the manufacturing requirements of the optical film for OLED flexible display in the processes such as refractive index detection, thickness detection and the like, and the conventional optical compensation film manufacturing process flow chart is shown in fig. 6.

From the above, the two process flows are complex, the derivatization performance is poor, the process operation is complex, the flow production is not facilitated, the complexity of the production line is high, and the occupied area is large.

Disclosure of Invention

It is an object of the present invention to address at least the above problems and/or disadvantages and to provide at least the advantages described below.

To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a method for preparing a polarizer compensation film for an OLED flexible display, comprising:

step one, preparing a pair of molten bodies from a high polymer forming a polarizer compensation film through a melting machine;

step two, preparing the molten mass obtained in the step one into a sheet or thick film through an elongated machine head matched with a melting machine;

step three, conveying the sheet or thick film obtained in the step two to synchronous optical oblique stretching equipment through a first transmission assembly to carry out synchronous oblique stretching treatment;

fourthly, the polarizer compensation film after the stretching treatment is subjected to rim charge cutting treatment through two cutter assemblies arranged at two ends of an outlet of the synchronous optical oblique stretching equipment;

and fifthly, conveying the cut polarizer compensating film finished product to one side of a winding machine through a matched second transmission mechanism for winding operation.

Preferably, in the first step, the melting process of the high molecular polymer in the melting machine is configured to include:

s10, sucking the raw materials of the high-molecular polymer into a hopper at the front end of a melting machine through a first matched material sucking mechanism, and mixing the raw materials through a mixing mechanism arranged in the hopper;

s11, conveying the materials subjected to material mixing treatment through the hopper to the temporary storage hopper through a first conveying pipe which is matched with the discharge end and is in inclined design in space;

s12, sucking out the materials in the temporary storage hopper through a second material sucking mechanism, and communicating the materials with the feeding end of the melting machine through a flat second feeding pipe;

s13, the materials entering the melting machine are subjected to melting treatment through a first preheating section, a first middle temperature section and a first high temperature section and then output.

Preferably, in S10, the device further includes a controller matched with each first suction mechanism, and the controller controls the working method of each first suction mechanism to include;

s110, the controller receives the proportion of each raw material input by a user, and switches the suction state of each first suction mechanism into an input state according to the proportion, so as to control the suction flow and the speed;

s111, after the first material sucking mechanisms suck materials, the controller controls the first blocking pieces of the first material sucking mechanisms, which are inclined, on the corresponding discharging pipes to be in a closed state so as to switch the communication state of the discharging pipes and the hopper to be closed, controls the second blocking pieces on the discharging pipes to be in an open state, and switches the communication state of the discharging pipes and the quantitative hopper to be in an open state;

s112, weighing the materials for a preset time by a gravity sensor arranged at the bottom of the weighing hopper, and transmitting the materials back to the controller;

s113, the controller compares the weight ratio received from each gravity sensor with the previous weight ratio to obtain raw material suction weight in a preset time so as to determine whether the suction amount of each raw material meets the input requirement of a user, if not, the suction flow and the suction rate of each first suction mechanism are subjected to secondary fine adjustment, the second judgment is carried out, if yes, the controller controls the first baffle to be in an open state, the communication state of the discharge pipe and the hopper is switched to be in communication, the second baffle is controlled to be in a closed state, the communication state of the discharge pipe and the quantitative hopper is switched to be in a closed state, and the feeding operation is started;

wherein, first inhale material mechanism and raw materials case matched with one side is provided with the feed hose, the free end of feed hose is provided with matched with inclined plane.

Preferably, in step two, the outer portion of the elongated handpiece is configured to adopt a double-layered structure so as to define a space therebetween for accommodating the insulating layer.

Preferably, in step three, the synchronous optical oblique stretching device is configured to include:

two annular transmission components which are oppositely arranged in a splayed shape;

a housing for enclosing the endless drive assembly;

the heating roller is arranged in the shell and positioned at the input front end of the annular transmission assembly;

wherein, the inner side wall of the shell is provided with a plurality of groups of heating mechanisms matched with the conveying direction of the sheet or thick film so as to form a second preheating section, a second middle temperature section and a second high temperature section which are matched in the shell;

the second preheating sections, the second medium temperature sections and the second high temperature sections are separated through air pipes arranged in the shell, the air pipes are provided with strip-shaped air outlets which are matched with each other so as to form an air curtain for separation in space, and a third medium temperature section and a low temperature section are arranged on one side, adjacent to the second high temperature section, of the shell;

the second high-temperature section pumps out the high-temperature air in the second high-temperature section through the matched first fan, and the high-temperature air flows into the second medium-temperature section after dehumidification treatment;

the second medium-temperature section pumps out the internal medium-temperature air through a matched second fan, and flows into a second preheating section after dehumidification treatment;

the second preheating section pumps out the internal preheated air through a matched third fan, and flows into a third medium-temperature section after dehumidification treatment;

the low-temperature section is matched with a fourth fan, and the drawn sheet or thick film is cooled by the drawn cold air.

Preferably, each endless drive assembly is configured to include:

a transmission section matched with the second preheating section;

at least one annular track matched with the second medium temperature section, the second high temperature section, the third medium temperature section and the low temperature section;

a plurality of chain clips disposed on the endless track for performing a gripping operation on the edges of the sheet or thick film;

wherein, at least one magnetic sensor matched with the driving chain clamp is respectively arranged at two ends of the annular track;

each magnetic sensor is in communication connection with the control main board.

Preferably, the method for synchronous oblique stretching treatment by the synchronous optical oblique stretching device is configured to include:

s30, after the sheet or thick film is output from the long and narrow machine head, carrying out primary delay pressing treatment through driving rollers which are arranged up and down in opposite directions in the first driving assembly;

s31, performing primary heating treatment on the sheet or thick film subjected to primary delay treatment through a heating roller;

s32, performing secondary heating treatment on the sheet or thick film subjected to the primary heating treatment through a second preheating section;

s33, the control main board senses the position state of the transmission chain clamp through the real-time magnetic sensor, and when the transmission chain clamp is positioned at the input end of the annular track, the opening state is switched to the closing state so as to input the sheet or thick film subjected to secondary heating treatment to the second medium-temperature section;

the control main board senses the position state of the transmission chain clamp through the real-time magnetic sensor, and when the transmission chain clamp is positioned at the output end of the annular track, the control main board switches the closed state into the open state so as to output the film subjected to stretching treatment from the low-temperature section;

s34, the control main board is in communication connection with the power input mechanisms of the annular tracks, the output speed of the annular tracks on the two sides is adjusted, and then the film is stretched in the output process, and the output delay of the annular track on one end is used for stretching the film in the stretching process, so that the film can be stretched in the width based on the arrangement layout of the annular tracks, and is stretched obliquely in the stretching process.

Preferably, the annular track is configured to include:

the control main board is used for respectively and independently controlling the transmission speed of each annular transmission section according to the requirement so as to ensure that the film is matched with the oblique stretching ratios of the second medium temperature section and the second high temperature section.

Preferably, in step four, each cutter assembly is configured to cooperate with the position of the chain clamp at the exit end of the synchronous optical diagonal draw machine to effect trimming of the film prior to opening of the chain clamp.

The invention at least comprises the following beneficial effects: firstly, the invention simplifies the production process of the compensation film by limiting the process, and sets the production of the base film and the production of the compensation film on a continuous production line, so that the utilization of the production field can be maximized, the links of unnecessary material rolling, stacking and the like in the middle are simplified, and the yield is improved.

Secondly, the invention can meet the requirement of accurate feeding by automatically and accurately adjusting and controlling the equipment, reduce the testing links at the front end, improve the processing efficiency of products, save raw materials and reduce waste.

Thirdly, the invention realizes stretching in the longitudinal direction, the transverse direction and the oblique direction by respectively and sectionally adjusting the transmission rates of the annular tracks which are oppositely arranged in the synchronous optical oblique stretching equipment and matching with the application of the transmission assembly, the stretching range and the angle of the stretching device can be adjusted according to the needs, and the performance index of the film can be ensured to meet the use needs.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic view of a front hopper and a temporary storage hopper of a melting machine according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the first suction mechanism in combination with a hopper and a raw box according to another embodiment of the present invention;

FIG. 3 is a schematic view of the spatial layout of the endless track, heated rolls;

FIG. 4 is a schematic drawing of the stretching of a film in a synchronous optical oblique stretching apparatus;

FIG. 5 is a flow chart of a prior art base film manufacturing process;

FIG. 6 is a flow chart of a prior art optical compensation film manufacturing process.

Detailed Description

The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.

It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

It should be noted that, in the description of the present invention, the orientation or positional relationship indicated by the term is based on the orientation or positional relationship shown in the drawings, which are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "engaged/connected," "connected," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, may be a detachable connection, or may be an integral connection, may be a mechanical connection, may be an electrical connection, may be a direct connection, may be an indirect connection via an intermediary, may be a communication between two elements, and for one of ordinary skill in the art, the specific meaning of the terms in this disclosure may be understood in a specific case.

According to the implementation form of the preparation method of the polaroid compensation film for the OLED flexible display, the preparation method comprises the following steps:

step three, conveying the sheet or thick film obtained in the step two into synchronous optical oblique stretching equipment through a first transmission component to carry out synchronous oblique stretching treatment, wherein the first transmission component simultaneously carries out multistage calendaring treatment in the transmission process to reduce the thickness of the sheet or thick film to obtain a corresponding base film, and the base film enters the synchronous optical oblique stretching equipment to carry out synchronous oblique stretching treatment to obtain a corresponding optical compensation film (polaroid compensation film), in practical application, stretching the base film through precise control of temperature and pressure and matching with specific stretching conditions to obtain the optical compensation film with different optical compensation performance requirements, and naturally, in practical application, when the equipment is in debugging test production, after the temperature, the pressure and the specific stretching conditions are adjusted, refractive index detection and thickness detection are required to be carried out on the stretched compensation film, and after the base film meets the conditions, online production, protective film pasting, packaging operation and the like are carried out;

and fifthly, conveying the cut polarizer compensation film finished product to one side of a winding machine through a matched second transmission mechanism for winding operation, wherein in the scheme, the steps are limited, so that compared with the prior art, the process is simpler, the flow controllability is better, namely, the prepared optical base film product is in practical application, and the molecular arrangement structure of a film material is changed by applying certain longitudinal, transverse and oblique stretching forces under a certain temperature condition, so that the refractive index detection and thickness detection of the film material meet the optical film manufacturing index, and the uniformity effect of the product production is good.

As shown in fig. 1, in another example, in the first step, the melting process of the high molecular polymer in the melting machine is configured to include:

s10, sucking the raw materials of the high-molecular polymer into a hopper 2 at the front end of a melting machine through a first matched suction mechanism 1, mixing the raw materials through a mixing mechanism arranged in the hopper, providing power for a mixing mechanism power mechanism 3, and enabling a stirring shaft 4 to be provided with a plurality of stirring paddles 5 in the axial direction in a space manner, wherein the bottom blades are provided with inclined scrapers 6 so as to lift the bottom materials completely in a spiral lifting manner;

s11, conveying the materials subjected to material mixing treatment through the hopper to the temporary storage hopper 8 through a first conveying pipe 7 which is matched with the discharge end and is in inclined design in space, wherein, of course, a matched electromagnetic valve is arranged on the first conveying pipe so as to be opened after material mixing is finished, and the working state of the first conveying pipe is switched into an open state;

s12, sucking out materials in the temporary storage hopper through a second sucking mechanism, communicating the materials with a feeding end of the melting machine through a flat second feeding pipe, feeding the materials through a flat structure, ensuring that the materials are not stacked together, and ensuring better working stability of the equipment;

s13, materials entering the melting machine are output after being subjected to melting treatment through the first preheating section, the first medium-temperature section and the first high-temperature section, in the scheme, the hopper is matched with the temporary storage hopper, so that the output of the materials is continuous, the materials are processed through the first preheating section, the first medium-temperature section and the first high-temperature section of the melting machine, the melting effect is ensured to meet the use requirement when the materials are output, and the melting completeness meets the output performance index.

In another example, in S10, a controller matched with each first suction mechanism is further included, and the controller controls the working method of each first suction mechanism to be configured to include;

s110, the controller receives the proportion of each raw material input by a user, and switches the suction state of each first suction mechanism into an input state according to the proportion, so as to control the suction flow and the speed, namely, the controller can control the accuracy through a metering pump in use;

s111, as shown in FIG. 2, after the first suction mechanisms suck materials, the controller controls the first baffle plates 10 of the first suction mechanisms, which are inclined, on the corresponding discharge pipes 9 to be in a closed state, so as to switch the communication state of the discharge pipes and the hopper to be closed, and controls the second baffle plates 11 on the discharge pipes to be in an open state, so as to switch the communication state of the discharge pipes and the weighing hopper 12 to be in an open state;

s112, weighing the materials in preset time by a gravity sensor 13 arranged at the bottom of the weighing hopper, and returning the materials to the controller;

wherein, a feeding hose 15 is arranged on one side of the first suction mechanism matched with the raw material box 14, a matched inclined surface 16 is arranged at the free end of the feeding hose, the feeding hose is matched with the raw material through the action of the inclined surface, the feeding hose is guaranteed to have a better input effect, the material at the bottom of the raw material box can be effectively sucked, a matched gravity sensor or a light sensor can be arranged at the bottom of the raw material box according to the use requirement, when the quality of the material is reduced to a preset position or the position of the material is reduced to a specified position, a corresponding notification is sent out, the raw material is fed, the hose is enabled to be correspondingly deformed, the feeding operation is completed according to the degree of the raw material, in this scheme, the proportional feeding of the raw material is realized through the matching limitation of each step and structure, the operation of a quantitative hopper at the front end is guaranteed, the input flow of the raw material is matched with the proportion of the raw material of the polymer in the same working time, and the accurate control of the material input is realized, and compared with the existing manual weighing of the raw material is realized.

In another example, in the second step, the outer part of the long and narrow machine head is configured to be of a double-layer structure so as to define a space for accommodating the heat insulation layer between the two, in this structure, molten materials are extruded through the long and narrow machine head, and the long and narrow machine head can be extruded into a tubular double-layer structure or a flat single-layer structure according to requirements, so as to meet the use requirements of different scenes.

In another example, in step three, the synchronous optical diagonal draw apparatus is configured to include:

as shown in fig. 3, two endless transmission members 17 disposed opposite in a splayed shape, which stretch a sheet or thick film to a predetermined width by adjustment of the space ratio;

the shell for packaging the annular transmission component can be arranged into double layers according to the requirement, and the middle cavity is provided with a heat preservation layer and/or a heat insulation layer which are matched with each other, and a silencing and noise reduction layer;

a heating roller 18 disposed inside the housing and at the input front end of the endless drive assembly for performing a first heat pretreatment, or may be referred to as a soak treatment, on the sheet or thick film;

in the structure, the temperature of each position in the shell is controlled by setting each heating mechanism, and matched temperature sensors can be arranged on each section according to the requirement, so that the working state of the heating mechanism is switched after the temperature reaches the use requirement, the power of each heating mechanism can be adjusted according to the requirement, and meanwhile, the temperature of each section is raised faster, kept better and the preheating time before the equipment works can be effectively shortened by the cooperation of fans of each section;

the second preheating sections, the second middle-temperature sections and the second high-temperature sections are separated through air pipes arranged in the shell, the air pipes are provided with matched strip-shaped air outlets so as to form an air curtain for separation in space, the shell is provided with a third middle-temperature section and a low-temperature section at one side adjacent to the second high-temperature sections, in the structure, the air pipes are used for forming the air curtain in space through air blown upwards or downwards by the air outlets on the air pipes, the temperature sections in the shell are separated, the third middle-temperature sections are used for performing middle-temperature cooling treatment on the film after the second Gao Wengu stretching treatment, the low-temperature sections are used for performing low-temperature treatment on the film subjected to the middle-temperature cooling treatment, and the performance index of the film is increased through the hot-cold treatment, and meanwhile, the output temperature is ensured to meet the winding requirement without natural cooling by prolonging the conveying path length of the film;

the low temperature section is matched with the fourth fan, the stretched sheet or thick film is cooled by the pumped cold air, in the scheme, the structure of the synchronous optical oblique stretching equipment is defined, a plurality of working areas are arranged in the synchronous optical oblique stretching equipment so as to be matched with performance indexes of each temperature stage of the sheet or thick film, the stretching treatment operation of the sheet or thick film is completed, meanwhile, the fans are matched with corresponding air pipes to complete the secondary recycling of temperatures of different stages, the influence of the fans on the environment is reduced, the heat energy utilization rate is improved, the environment-friendly and energy-saving effect is achieved, after the film is stretched, the surface temperature of the film after being stretched and output from the equipment is well controllable by the first middle-temperature cooling and the second-temperature section, the product performance is regulated, and the OLED using performance requirement is met.

In another example, as in fig. 3, each endless drive assembly is configured to include:

the transmission section 19 matched with the second preheating section can be subjected to preheating and pressure-delaying treatment by relative to two designed transmission rollers with heating shafts;

at least one annular track 20 mated with the second intermediate temperature section, the second high temperature section, the third intermediate temperature section, the low temperature section;

a plurality of chain clips 21 provided on the endless track for performing a gripping operation on the edges of the sheet or thick film;

wherein, at least one magnetic sensor (not shown) matched with the driving chain clamp is respectively arranged at two ends of the annular track;

each magnetic sensor is in communication connection with the control main board, in the structure, the structure of the annular transmission assembly is limited, the annular transmission assembly is subjected to preheating treatment through the transmission section, the space proportion of the annular track is reduced, meanwhile, the treatment rate of sheets or thick films in the second middle temperature section, the second high temperature section and the third middle temperature section is improved, the annular track is used for circularly conveying the transmission chain clamp to the input side and the output side of the annular track, namely, the transmission chain clamp is controlled to be in a working state, the edges of the sheets or thick films are clamped, the splayed annular track can transversely stretch the clamped sheets or thick films in space to form a more uniform membranous structure, more preferably, the clamping end of the transmission chain clamp is provided with an arc-shaped part on one side matched with the thin films to prevent the thin films from being damaged, the number of the transmission chain clamp and the clamping width limit the number of the transmission chain clamp are used for keeping the edges of the thin films in a clamping state so as to ensure that the stretching effect meets the requirement, and the magnetic sensor (magnetic sensor) is used for sensing the positions of the transmission chain clamp so as to ensure that the opening and closing of the transmission chain clamp and the transmission chain clamp are matched with the transmission state.

In another example, the method of synchronous optical diagonal draw processing by the synchronous optical diagonal draw apparatus is configured to include:

s34, the control main board is in communication connection with the power input mechanisms of all the annular tracks, the output speed of the annular tracks on the two sides is adjusted, and then the film is stretched and output in the process of outputting through the output delay of the annular tracks on one end, so that the film can be stretched in the width direction based on the arrangement layout of the annular tracks in the stretching process, and simultaneously is obliquely stretched in the stretching process.

In another example, the annular track is configured to include:

the control main board is used for respectively controlling the transmission rate of each annular transmission section according to the requirement so as to ensure that the film is matched with the oblique stretching ratio of the second intermediate temperature section and the second high temperature section, in the scheme, the structure of the annular track is limited, so that the film can be matched with the film stretching ratio at different positions by limiting the film transmission rate at different positions in actual operation, namely, the transmission ratio of the driving rollers at two ends of the second preheating section is consistent, the flexibility of the film is increased so as to ensure that the effect of the subsequent stretching treatment meets the use requirement, and the speed of the second intermediate temperature Duan Liangduan independent annular transmission section is different, namely one side is fast in transmission and the other side is slower (1/2-3/4 of the speed of the other side), so that a sheet or thick film can generate oblique stretching acting force in space to ensure the performance index of the film, and in the second high-temperature section, the speed difference of the independent annular transmission sections at two ends of the second high-temperature section is set to be larger because the film has the highest flexibility in the temperature in the high-temperature section, namely one side is fast in transmission and the other side is 1/3-1/2 of the speed of the other side, the film in transmission is obliquely stretched through the difference of the two sides to ensure that the stretching ratio meets the use requirement, specifically, as shown in figure 4, the invention performs differential setting through the working speed of the annular track, so that the film is synchronously and bidirectionally obliquely stretched in the direction with a certain angle in the advancing direction of the film, and the film is manufactured after special processing such as proper cooling or heat treatment, and the like, and the synchronous optical oblique stretching technology directly overcomes the defects of the traditional optical compensation film technology, realizes stretching (0-90 degrees) at any angle, is not easy to scratch and scratch, and can realize the improvement of the optical compensation film manufacturing technology by more stretched raw materials.

In another example, as shown in fig. 3, in the fourth step, each cutter assembly 22 is configured to cooperate with the position of the driving chain clamp at the outlet end of the synchronous optical oblique stretching device to complete the trimming operation of the film before the driving chain clamp is opened, in this scheme, the clamping part of the driving chain clamp is removed by the operation of the cutter assembly, so as to ensure better uniformity and stability of the film properties after the film rolling operation, and in the actual operation, the cutter assembly can be arranged as scissors with a V-shaped structure so as to divide the film through the intersecting points formed in the space.

The above is merely illustrative of a preferred embodiment, but is not limited thereto. In practicing the present invention, appropriate substitutions and/or modifications may be made according to the needs of the user.

The number of equipment and the scale of processing described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be readily apparent to those skilled in the art.

Although embodiments of the invention have been disclosed above, they are not limited to the use listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.

Claims

1. The preparation method of the polaroid compensation film for the OLED flexible display is characterized by comprising the following steps of:

step five, conveying the cut polarizer compensation film finished product to one side of a winding machine through a matched second transmission mechanism for winding operation;

in step three, the synchronous optical diagonal draw apparatus is configured to include:

a housing for enclosing the endless drive assembly;

the low-temperature section is matched with the fourth fan, and the drawn sheet or thick film is cooled by the drawn cold air;

each endless drive assembly is configured to include:

a transmission section matched with the second preheating section;

each magnetic sensor is in communication connection with the control main board; the method for synchronous oblique drawing treatment by the synchronous optical oblique drawing device is configured to comprise the following steps:

s34, the control main board is in communication connection with the power input mechanisms of the annular tracks, and the output speed of the annular tracks on the two sides is adjusted, so that the film is stretched and output in the stretching and output process, and the film can be stretched in the width based on the arrangement layout of the annular tracks in the stretching process by delaying the output of the annular track on one end, and is obliquely stretched in the stretching process;

the annular track is configured to include:

the control main board is used for respectively and independently controlling the transmission speed of each annular transmission section according to the need so as to ensure that the film is matched with the oblique stretching ratios of the second medium temperature section and the second high temperature section;

in the second preheating section, the transmission ratio of the transmission rollers at the two ends is consistent;

the rates of the independent annular transmission sections at the second medium temperature Duan Liangduan are different, namely, the transmission rate at one side is 1/2-3/4 of the transmission rate at the other side;

the speed difference of the independent annular transmission sections at the two ends of the second high-temperature section is larger than that of the second medium-temperature section, namely, the transmission speed at one side is 1/3-1/2 of that at the other side;

the working speed of the annular track is set differently, so that the film advancing direction is synchronously and obliquely stretched within the range of 0-90 degrees.

2. The method for preparing a polarizer compensation film for OLED flexible display as claimed in claim 1, wherein in the first step, a melting process of the high molecular polymer in a melting machine is configured to include:

3. The method for preparing a polarizer compensation film for OLED flexible display as claimed in claim 2, wherein in S10, a controller is further included in cooperation with each first suction mechanism, and the controller controls the operation method of each first suction mechanism to be configured to include;

4. The method of manufacturing a polarizer compensation film for OLED flexible display as claimed in claim 1, wherein in the second step, the outer portion of the elongated handpiece is configured to have a double-layered structure so as to define a space for accommodating the heat insulating layer therebetween.

5. The method of preparing a polarizer compensation film for OLED flexible display as claimed in claim 1, wherein in step four, each cutter assembly is configured to cooperate with a position of a driving chain clip at an outlet end of the synchronous optical oblique stretching apparatus to finish trimming the film before the driving chain clip is opened.