CN111559164B - Curved surface transfer printing device and curved surface transfer printing method for flexible electronic device - Google Patents
Curved surface transfer printing device and curved surface transfer printing method for flexible electronic device Download PDFInfo
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- CN111559164B CN111559164B CN202010534781.8A CN202010534781A CN111559164B CN 111559164 B CN111559164 B CN 111559164B CN 202010534781 A CN202010534781 A CN 202010534781A CN 111559164 B CN111559164 B CN 111559164B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F16/00—Transfer printing apparatus
- B41F16/0006—Transfer printing apparatus for printing from an inked or preprinted foil or band
- B41F16/0073—Transfer printing apparatus for printing from an inked or preprinted foil or band with means for printing on specific materials or products
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F16/00—Transfer printing apparatus
- B41F16/0006—Transfer printing apparatus for printing from an inked or preprinted foil or band
- B41F16/0093—Attachments or auxiliary devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Non-Metallic Protective Coatings For Printed Circuits (AREA)
- Supply And Installment Of Electrical Components (AREA)
Abstract
A curved surface transfer apparatus and a curved surface transfer method of a flexible electronic device are provided. The transfer printing device comprises a push-pull part and a pressing part, wherein the pressing part comprises a bracket and an elastic membrane, the bracket is provided with a cavity, the elastic membrane is sleeved on the bracket and covers an opening of the cavity, and the push-pull part is aligned with the opening; the push-pull portion is used for installing the curved surface part, the surface of the part, which covers the opening, of the elastic film and faces the push-pull portion is used for installing the flexible electronic device, the curved surface part can enter and exit the cavity under the driving of the push-pull portion and/or the pressing portion can enable the curved surface part to enter and exit the cavity, and the elastic film deforms when the curved surface part enters the cavity to press the flexible electronic device to the curved surface part. The characteristic of elastic deformation when the elastic membrane is stressed is utilized, the push-pull part and the elastic membrane are matched to be used, so that the flexible electronic device is automatically pressed to be attached to a curved surface part, the precision of transfer printing is controllable through mechanical operation, the repeatability is good, and the elastic membrane is uniform in force application and is favorable for the flexible electronic device to be attached tightly.
Description
Technical Field
The present disclosure relates to the field of flexible electronic device transfer printing technologies, and in particular, to a curved surface transfer printing apparatus and a curved surface transfer printing method for a flexible electronic device.
Background
With the continuous development of flexible electronic technology, it is applied in more and more fields. In many applications of flexible electronic devices, it is necessary to integrate a large-area flexible electronic device array onto a non-developable surface, such as arranging copper wires on a spherical substrate to form a spherical antenna, integrating a semiconductor photosensitive element onto a spherical surface to form a human eye-like camera, and forming a medical ellipsoidal balloon with low-frequency electrodes distributed on the surface.
The curved surface transfer technique refers to transferring an array of flexible electronic devices on a rigid substrate to a non-developable surface using a temporary substrate. The existing transfer process is as follows: firstly, preparing a flexible electronic device array with ductility on a plane hard substrate by using traditional processes such as photoetching and the like; then, transferring the prepared flexible electronic device array to a temporary substrate, wherein the temporary substrate usually has certain viscosity, and for example, a water-soluble adhesive tape, a heat release adhesive tape and the like are used for forming the temporary substrate; and finally, manually attaching the temporary substrate with the flexible electronic device array to the non-developable surface subjected to adhesive treatment, and removing the temporary substrate after attachment is finished so as to transfer the flexible electronic device array to the non-developable surface from the plane hard substrate.
It can be seen that the current curved surface transfer printing technology relies on manual work, and the combination of the temporary substrate and the flexible electronic device needs to be manually attached to the non-developable surface, which often results in that the combination cannot be precisely aligned with the non-developable surface, so that the transfer printing precision is reduced, and when the area of the flexible electronic device array is large, the missing and debonding are easy to occur, so that the combination and the non-developable surface are not tightly attached. In addition, the process repeatability of manual transfer is poor, and the transfer efficiency is low.
Disclosure of Invention
The present disclosure is made in view of the state of the art described above. The invention aims to provide a curved surface transfer printing device and a curved surface transfer printing method of a flexible electronic device, which can improve the precision and efficiency of curved surface transfer printing, obtain good transfer printing effect and reduce the transfer printing cost.
The curved surface transfer printing device of the flexible electronic device comprises a push-pull part and a pressing part, wherein the push-pull part and/or the pressing part can move;
the push-pull part is used for mounting a curved part, the surface of the part, which covers the opening, of the elastic film, facing the push-pull part is used for mounting a flexible electronic device, the curved part can move towards and away from the cavity under the driving of the push-pull part and can enter and exit the cavity, and/or the pressing part can move towards and away from the push-pull part and can enter and exit the cavity, so that the curved part enters and exits the cavity, and the elastic film is deformed when the curved part enters the cavity, so that the flexible electronic device is pressed to the curved part.
Preferably, the curved surface transfer device includes an actuating portion, and the actuating portion drives the elastic membrane to deform to wrap the curved surface part, so that the elastic membrane is driven by the actuating portion to press the unpressed part of the flexible electronic device to the curved surface part.
Preferably, the curved surface transfer device includes a cover, the elastic film is always sleeved on the support in the deformation process, the cover is used for covering the opening of the cavity and pressing the elastic film to the support after the push-pull portion moves relative to the support, the actuating portion includes an air port and a sealing cavity, the sealing cavity is formed by the portion of the elastic film located in the cavity and the cover, and the air port is located in the push-pull portion and located in the sealing cavity.
Preferably, the cover is connected to the push-pull part, and the cover moves together with the push-pull part.
Preferably, the push-pull portion comprises a rod body, one end of the rod body is used for installing the curved surface part, the air port is arranged close to the one end of the rod body, an air suction path is arranged inside the rod body, and the air suction path is communicated with the air port.
Preferably, the push-pull portion is provided with a vacuum chuck assembly, the vacuum chuck assembly comprises a vacuum chuck and a chuck gas circuit, the vacuum chuck is used for sucking the curved surface part, and the chuck gas circuit is arranged in the push-pull portion and communicated with the vacuum chuck so that the vacuum chuck has a vacuum area.
Providing a curved surface transfer printing method, wherein the curved surface transfer printing method adopts the curved surface transfer printing device in any one of the technical schemes, and the transfer printing method comprises the following steps:
the installation step: mounting the curved surface part on the push-pull part, and mounting the flexible electronic device on the surface of the elastic film facing the push-pull part;
a pretreatment step: making the surface of the curved surface part have viscosity;
a pushing step: pushing the curved part into the cavity by the push-pull part by bringing the push-pull part and the holder close to each other so that at least a part of the flexible electronic device is pressed to the curved part;
a drawing step: and taking out the curved part attached with the flexible electronic device from the cavity by making the push-pull part and the bracket far away from each other.
Preferably, in the mounting step, the flexible electronic device is placed on a surface of the elastic film facing the push-pull portion.
Preferably, in the mounting step, a combination of the flexible electronic device and a temporary substrate is mounted to the elastic film, and after the pulling step:
disassembling: detaching the curved surface part and the flexible electronic device from the push-pull part;
post-treatment: removing the temporary substrate from the curved part and the flexible electronic device.
Providing a curved surface transfer printing method, wherein the curved surface transfer printing method adopts the curved surface transfer printing device in any one of the technical schemes, and the transfer printing method comprises the following steps:
the installation step: mounting the curved surface part on the push-pull part, and mounting the flexible electronic device on the surface of the elastic film facing the push-pull part;
a pretreatment step: making the surface of the curved surface part have viscosity;
a pushing step: pushing the curved surface part into the cavity by the push-pull portion by bringing the push-pull portion and the holder close to each other, the elastic film deforming and pressing a portion of the flexible electronic device located at least immediately in front of an advancing direction of the curved surface part to the curved surface part;
a suction step: drawing gas from the sealed chamber through the gas port to deform the elastic membrane to wrap the curved part;
a drawing step: and taking out the curved part attached with the flexible electronic device from the cavity by making the push-pull part and the bracket far away from each other.
The technical scheme provided by the disclosure at least has the following beneficial effects:
the characteristic of elastic deformation when utilizing the elastic membrane atress, thereby the cooperation uses push-and-pull portion and elastic membrane to realize exerting pressure automatically to flexible electron device and make it laminate in curved surface part, replaces current artifical laminating, and mechanized operation makes the precision of rendition controllable, and the repeatability is better, thereby and the elastic membrane application of force is even to be favorable to the attached inseparable transfer printing effect of assurance of flexible electron device.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a curved surface transfer device of a flexible electronic device provided by the present disclosure.
FIG. 2 is a schematic view of one embodiment of a temporary substrate carrying flexible electronic devices for curved surface transfer.
Fig. 3 is a schematic view of a part of the curved surface transfer device in a pushing step in the process of performing curved surface transfer.
Fig. 4 is a partial schematic view of the curved surface transfer device further in the pushing step than fig. 3, showing the cover covering the cavity.
Fig. 5 is a schematic view of a portion of the curved surface transfer device in a suction step during the curved surface transfer process.
Fig. 6 is a schematic view of a combination of a flexible electronic device, a temporary substrate and a curved part.
Fig. 7 is a schematic view of the combination of the flexible electronic device and the curved surface feature after removal of the temporary substrate.
Description of reference numerals:
1 frame, 21 rod body, 22 cover body, 23 vacuum chuck, 24 air ports, 3 supports, 31 cavities, 4 elastic films, 41 elastic bottom parts, 42 elastic wall parts, 5 curved surface parts, 6 flexible electronic devices and 7 temporary substrates.
Detailed Description
Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings. It should be understood that the detailed description is intended only to teach one skilled in the art how to practice the disclosure, and is not intended to be exhaustive or to limit the scope of the disclosure.
As shown in fig. 1 and 2, the present disclosure provides a curved surface transfer device of a flexible electronic device 6, which includes a frame 1, a push-pull portion and a pressing portion, the push-pull portion and the pressing portion being mounted on the frame 1. The push-pull part can be supported by the frame 1 and move under stress, and the push-pull part is used for installing the curved surface part 5. Specifically, the push-pull portion includes, for example, a rod 21, one end of the rod 21 is mounted with the curved part 5, and the moving path of the push-pull portion is parallel to the axis of the rod 21.
The body of rod 21 can install the vacuum chuck subassembly, and the vacuum chuck subassembly includes vacuum chuck 23 and sucking disc gas circuit, and vacuum chuck 23 is used for absorbing curved surface part 5, and the sucking disc gas circuit can be located in the push-and-pull portion, for example in the body of rod 21, the sucking disc gas circuit communicates in vacuum chuck 23 so that vacuum chuck 23 has the vacuum area. Thus, when the curved surface part 5 is to be mounted, the suction path sucks air from the vacuum suction cup 23 to form a vacuum region, and the curved surface part 5 is stably mounted by the atmospheric pressure.
The vacuum cup 23 is preferably made of rubber, plastic, etc., and the rod body 21 is preferably made of metal such as steel.
The pressing portion includes a holder 3 and an elastic membrane 4, the holder 3 may be, for example, a cylinder with two open ends, so that the holder 3 has, for example, a cylindrical cavity 31 and has openings at its two axial ends, and the elastic membrane 4 is fitted over the holder 3 and covers one opening of the cavity 31.
The holder 3 is made of a metal such as a steel material, and the elastic film 4 is made of PDMS (polydimethylsiloxane), Ecoflex (copolyester), or the like.
In other embodiments, the support 3 may also be a bottomed cylinder open at one end and closed at the other end, and accordingly, the cavity 31 has an opening only at one axial end thereof.
The frame 1 positions the rod body 21 and the bracket 3 in a direction perpendicular to a moving path of the rod body 21 (hereinafter, the rod body 21 is explained as an example of a push-pull portion), and an axis of the rod body 21 may pass through a center of an opening of the cavity 31, that is, an axis of the rod body 21 is collinear with an axis of the cylindrical cavity 31, so that the rod body 21 can push the curved part 5 into a center of the cavity 31.
The rod 21 is located outside the cavity 31 and aligned with the opening of the cavity 31, and the surface of the portion of the elastic membrane 4 covering the opening of the cavity 31 facing the rod 21 is used for mounting the flexible electronic device 6. The elastic film 4 is formed into a bottomed cylindrical body after being fitted to the holder 3, so that the elastic film 4 has an elastic bottom portion 41 covering the opening of the cavity 31 and an elastic wall portion 42 covering the holder 3, the rod body 21 and the cavity 31 are respectively located on opposite sides of the elastic bottom portion 41 (the opening of the cavity 31), and the flexible electronic device 6 is mounted to the elastic bottom portion 41.
Specifically, the flexible electronic device 6 may be combined with the temporary substrate 7, and the combination of the flexible electronic device 6 and the temporary substrate 7 is mounted to the elastic base 41, the combination being formed after the flexible electronic device 6 is processed on a hard base and the flexible electronic device 6 is transferred to the temporary substrate 7. The temporary substrate 7 is in contact with the elastic membrane 4 and the flexible electronic device 6 is located on the side of the temporary substrate 7 facing away from the elastic membrane 4, i.e. towards the curved part 5.
As shown in fig. 2, similar to the temporary substrate 7 for curved surface transfer in the prior art, in one example, the temporary substrate 7 used in the present disclosure is a centrosymmetric pattern, for example, a petal shape, having a plurality of slits along the circumference so as to smoothly fit to the curved surface part 5 without generating wrinkles when being coated on the curved surface part 5. The curved part 5 has an axis of symmetry, and in the present embodiment, the curved part 5 is, for example, a sphere. In other embodiments, the curved part 5 may be an ellipsoid, a hemisphere, a cone, etc., and the axis of the curved part 5 is along the push-pull direction (up-down direction in fig. 1) of the push-pull portion when the curved part is installed (described in detail below).
When the flexible electronic device 6 is to be transferred to the curved part 5, the push-pull portion pushes the curved part 5, the curved part 5 moves towards the cavity 31 under the driving of the push-pull portion, so that the flexible electronic device 6 is pushed into the cavity 31, and meanwhile, the elastic film 4 deforms to press the flexible electronic device 6 to the curved part 5, for example, each petal-shaped temporary substrate 7 is pressed to the curved part 5 by the elastic film 4.
In other embodiments it is also possible to move the pressing part towards the curved part 5 so that the curved part 5 enters the cavity 31.
Utilize the characteristic of elastic deformation when the elastic membrane 4 atress, thereby the cooperation uses push-and-pull portion and elastic membrane 4 to realize exerting pressure automatically to flexible electron device 6 and make it laminate in curved surface part 5, replaces current artifical laminating, and mechanized operation makes the precision of rendition controllable, and the repeatability is better, thereby and the 4 application of force of elastic membrane evenly is favorable to the attached inseparable transfer effect of guaranteeing of flexible electron device 6.
It will be understood that the elastic membrane 4 is large enough to always fit over the support 3 during its deformation, i.e. the elastic membrane 4 always has a portion (elastic wall portion 42) outside the support 3 during the deformation by the curved element 5, the elastic wall portion 42 becoming progressively smaller during this process.
The above-described transfer process will achieve a good transfer effect in the case where the flexible electronic device 6 (which refers to the combination of all the flexible electronic devices 6 transferred, also referred to as a flexible electronic device array) or the temporary substrate 7 is small, such as the size of the flexible electronic device 6 in the push-pull direction perpendicular to the push-pull portion is not larger than the diameter of the curved part 5, and at most not larger than the length of the portion of the longitudinal sectional profile of the curved part 5 before the diameter (in front of the advancing direction).
The applicable scenario of the curved surface transfer device is related to the sizes of the cavity 31 and the curved surface part 5, for example, when the difference between the inner diameter of the cylindrical cavity 31 and the outer diameter of the curved surface part 5 is not more than 2 times the sum of the thickness of the elastic film and the thickness of the combination of the flexible electronic device 6 and the temporary substrate 7, the dimension of the flexible electronic device 6 in the direction perpendicular to the push-pull direction of the push-pull portion may be equal to the half circumference of the longitudinal section of the curved surface part 5. At this time, the flexible electronic devices 6 can be all pressed to the curved surface part 5.
However, when the size of the flexible electronic component 6 in the push-pull direction perpendicular to the push-pull portion is larger than the half cycle length of the longitudinal section of the curved surface part 5, a part of the flexible electronic component 6 is located laterally rearward of the curved surface part 5 in the advancing direction thereof (downward in fig. 1), and the part is not yet pressed. When the difference between the inner diameter of the cylindrical cavity 31 and the (largest) outer diameter of the curved surface part 5 is large, portions of the flexible electronic device 6 located on the side front and the front side of the curved surface part 5 in the advancing direction thereof may not yet be pressed.
For this case, an actuator may be added, as described in detail below.
When the flexible electronic device 6 is large and needs to be transferred to more parts of the curved part 5, the actuating part is started, the actuating part drives the elastic membrane 4 to deform to wrap the curved part 5, so that the elastic membrane 4 is driven by the actuating part to press the parts of the flexible electronic device 6, which are positioned behind the unpressed side and/or in front of the front side in the advancing direction of the curved part 5, to the curved part 5.
The actuating part may comprise a gas port 24 and a sealed cavity, the curved surface part 5 is located in the sealed cavity, the gas port blows gas into the sealed cavity or sucks gas from the sealed cavity, and pressure change in the sealed cavity can be realized through the blowing and the sucking of the gas port, so that the elastic membrane 4 is driven to deform under the action of the internal and external pressure difference of the sealed cavity.
The curved surface transfer device further includes, for example, a cover 22 attached to the rod 21, the cover 22 moving along with the rod 21, the cover 22 being located behind the curved surface part 5 in the advancing direction of the curved surface part 5. During the process of pushing the curved part 5 by the rod 21, as the curved part 5 gradually enters the cavity 31, the elastic membrane 4 gradually deforms, and the cover 22 gradually approaches the cavity 31 until it presses against the portion of the bracket 3 located at the opening of the cavity 31.
A sealed chamber may be formed by the portion of the flexible membrane 4 located within the cavity 31 and the cover 22, and the air port 24 may be located in the stem 21 and within the sealed chamber. The rod body 21 may have a suction passage therein, and when the suction passage sucks air from the sealed cavity, the pressure of the sealed cavity becomes lower, and the elastic membrane 4 is elastically deformed to wrap the curved surface part 5 and the rod body 21 under the pressure of the portion of the cavity 31 located outside the sealed cavity, so as to press the flexible electronic device 6, particularly, the portion located behind and/or in front of and/or right side of the advancing direction of the curved surface part 5, which is not yet pressed, to the curved surface part 5.
The curved surface transfer printing of the flexible electronic device 6 can be performed by the curved surface transfer printing apparatus as follows.
Installation step (as shown in fig. 1): the curved surface part 5 is mounted to the rod body 21 (push-pull portion), and the flexible electronic device 6 is mounted, for example, on the surface of the elastic film 4 facing the rod body 21, specifically, the axis of the curved surface part 5 is made collinear with the axis of the rod body 21, and the center of the flexible electronic device 6 (the center of the temporary substrate 7) is made to be located on the axis of the cylindrical cavity 31, i.e., coincident with the center of the opening of the cavity 31.
A pretreatment step: the surface of the curved part 5 is rendered tacky, for example by coating the surface of the curved part 5 with an epoxy glue.
Push step (as shown in fig. 3 and 4): by bringing the rod 21 and the holder 3 closer to each other so that the rod 21 pushes the curved part 5 into the cavity 31, the elastic film 4 is deformed by the force of the rod 21 and the curved part 5 so that a part of the flexible electronic device 6, for example, a part located forward, laterally forward, and directly lateral in the advancing direction (for example, downward in fig. 3 to 5) of the curved part 5 is pressed against the curved part 5, for example, a front half part of the curved part 5.
As shown in fig. 4, in the pushing step, as the rod body 21 is continuously pushed, the cover 22 is pressed against the portion of the bracket 3 located at the opening of the cavity 31 to form a sealed cavity within the cavity 31.
Suction step (as shown in fig. 5): the sealed cavity is sucked through the air port 24, the elastic membrane 4 wraps the curved part 5 under the action of the pressure difference between the inside and the outside of the sealed cavity, and the elastic membrane 4 presses the portion of the flexible electronic device 6 located laterally behind the curved part 5 in the advancing direction (e.g., below in fig. 3 to 5) to the curved part 5, e.g., the rear half portion of the curved part 5.
Referring to fig. 4, in order to facilitate the formation of a pressure difference between the inside and outside of the elastic membrane 4, that is, in order to make it difficult to generate a negative pressure between the elastic membrane 4 and the holder 3, it is preferable to form a gap between the elastic membrane 4 and the holder 3 in the state shown in fig. 5. In other words, the difference between the inner diameter of the cylindrical cavity 31 and the outer diameter of the curved surface part 5 is preferably slightly larger than 2 times the sum of the thickness of the elastic membrane 4 and the thickness of the combination of the flexible electronic device 6 and the temporary substrate 7. Further, a plurality of vent holes may be formed in the upper end of the holder 3 (see fig. 5, in the portion of the holder 3 located above the curved part 5).
A blowing step: the air is blown into the sealed cavity through the air port 24, so that the pressure in the sealed cavity is increased to make the elastic membrane 4 rebound to the state before the suction step is carried out, namely, the elastic membrane 4 is separated from the rear half part of the curved surface part 5.
It will be appreciated that this blowing step is merely optional and not necessary. When the rod body 21 is pulled upward from the state shown in fig. 5, a gap is formed between the cover 22 and the elastic membrane 4, and air is introduced between the cover 22 and the elastic membrane 4 to eliminate the above-mentioned pressure difference. In this way, the elastic membrane 4 may naturally spring back to be separated (partially) from the flexible electronic device 6 and the temporary substrate 7.
A drawing step: the curved part 5 to which the flexible electronic device 6 is attached is taken out of the cavity 31 by moving the rod 21 and the holder 3 away from each other, for example, the rod 21 pulls out the curved part 5 to which the flexible electronic device 6 is attached from the cavity 31.
Disassembly step (shown in fig. 6): detaching the curved part 5 combined with the flexible electronic device 6 and the temporary substrate 7 from the rod body 21 to obtain a combined body of the temporary substrate 7, the flexible electronic device 6 and the curved part 5;
post-treatment step (as shown in fig. 7): the temporary substrate 7 is removed from the curved part 5 and the flexible electronic device 6 to obtain a combination of the flexible electronic device 6 and the curved part 5, and when the temporary substrate 7 is a heat release tape, for example, the temporary substrate 7 is heated by a heat gun to lose its adhesiveness and is removed.
A post-processing step is performed after the removal step so that the temporary substrate 7 protects the flexible electronic device 6 when the curved part 5 is removed.
The mounting step is followed by a preprocessing step, which makes it possible to take off the curved surface part 5 in a state where the temporary substrate 7 protects the flexible electronic device 6, thereby avoiding direct contact of a jig or the like with the flexible electronic device 6, and thus effectively protecting the flexible electronic device 6.
Of course, in other embodiments, the mounting step and the pre-treatment step may be reversed, but additional protective measures may be required to protect the adhesion.
In other embodiments, the disassembly step and post-processing step may be reversed. In this way, in the post-processing step, the temporary substrate 7 can be easily removed from the curved part 5 and the flexible electronic device 6 with the curved part 5 held by the rod body 21 and the vacuum chuck 23. In the detachment step, since the curved surface part 5 and the flexible electronic device 6 can be released by evacuating the vacuum chuck 23 without particularly holding the curved surface part 5 and the flexible electronic device 6, the detachment step can also be easily performed.
In the mounting step, the flexible electronic device 6 may be placed on the surface of the elastic membrane 4 without being connected to the elastic membrane 4. Thus, the flexible electronic device 6 has a high degree of freedom in adjusting the relative position with the curved surface part 5 in the process of being attached to the curved surface part 5, and when the curved surface part 5 is separated from the elastic film 4 after the flexible electronic device 6 is pressed, the elastic film 4 can be prevented from pulling the flexible electronic device 6 and causing the flexible electronic device to fall off.
It should be understood that the curved surface transfer device provided by the present disclosure is still applicable in the case where the flexible electronic device 6 is placed on the elastic film 4 alone without being combined with the temporary substrate 7.
It should be understood that the above-described embodiments are exemplary only, and are not intended to limit the present disclosure. Various modifications and alterations of the above-described embodiments may be made by those skilled in the art in light of the teachings of this disclosure, without departing from the scope of this disclosure.
Claims (10)
1. The curved surface transfer printing device of the flexible electronic device is characterized by comprising a push-pull part and a pressing part, wherein the push-pull part and/or the pressing part can move, the pressing part comprises a bracket (3) and an elastic film (4), the bracket (3) is provided with a cavity (31), the elastic film (4) is sleeved on the bracket (3) and covers an opening of the cavity (31), and the push-pull part is aligned with the opening;
the push-pull part is used for installing a curved part (5), the surface of the part, which covers the opening, of the elastic film (4) facing the push-pull part is used for installing a flexible electronic device (6), the curved part (5) can move towards and away from the cavity (31) under the driving of the push-pull part to enter and exit the cavity (31) and/or the pressing part can move towards and away from the push-pull part to enable the curved part (5) to enter and exit the cavity (31), and when the curved part (5) enters the cavity (31), the elastic film (4) deforms to press the flexible electronic device (6) to the curved part (5).
2. The curved surface transfer device of the flexible electronic device according to claim 1, wherein the curved surface transfer device comprises an actuating portion, and the actuating portion drives the elastic membrane (4) to deform to wrap the curved surface part (5), so that the elastic membrane (4) is driven by the actuating portion to press the unpressed part of the flexible electronic device (6) to the curved surface part (5).
3. The curved surface transfer printing apparatus of the flexible electronic device according to claim 2, wherein the curved surface transfer printing apparatus comprises a cover (22), the elastic membrane (4) is always sleeved on the support (3) during the deformation process, the cover (22) is used for covering the opening of the cavity (31) and pressing the elastic membrane (4) to the support (3) after the push-pull portion moves relative to the support (3), the actuating portion comprises an air port (24) and a sealing cavity, the sealing cavity is formed by the portion of the elastic membrane (4) located in the cavity (31) and the cover (22), and the air port (24) is located in the push-pull portion and located in the sealing cavity.
4. The curved surface transfer printing apparatus of flexible electronic device according to claim 3, wherein said cover (22) is connected to said push-pull portion, said cover (22) moving with said push-pull portion.
5. The curved surface transfer printing device of the flexible electronic device according to claim 3, wherein the push-pull portion comprises a rod body (21), one end of the rod body (21) is used for mounting the curved surface part (5), the air port (24) is disposed near the one end of the rod body (21), and an air suction path is formed inside the rod body (21) and is communicated with the air port (24).
6. The curved surface transfer printing apparatus of flexible electronic device according to claim 1, wherein said push-pull portion is installed with a vacuum chuck assembly, said vacuum chuck assembly comprises a vacuum chuck (23) and a chuck gas circuit, said vacuum chuck (23) is used for sucking said curved surface part (5), said chuck gas circuit is disposed in said push-pull portion and connected to said vacuum chuck (23) to make said vacuum chuck (23) have a vacuum area.
7. A curved surface transfer method using the curved surface transfer apparatus according to any one of claims 1, 2, or 6, the curved surface transfer method comprising the steps of:
the installation step: -mounting the curved surface part (5) to the push-pull part, and mounting the flexible electronic device (6) to the surface of the elastic membrane (4) facing the push-pull part;
a pretreatment step: making the surface of the curved surface part (5) sticky;
a pushing step: pushing the curved part (5) into the cavity (31) by the push-pull portion by bringing the push-pull portion and the holder (3) closer to each other so that at least a part of the flexible electronic device (6) is pressed to the curved part (5);
a drawing step: the curved surface part (5) to which the flexible electronic component (6) is attached is taken out of the cavity (31) by moving the push-pull portion and the holder (3) away from each other.
8. The curved surface transfer method according to claim 7, wherein in the mounting step, the flexible electronic device (6) is placed on a surface of the elastic film (4) facing the push-pull portion.
9. The curved surface transfer method according to claim 7, wherein in the mounting step, a combination of the flexible electronic device (6) and a temporary substrate (7) is mounted to the elastic film (4), and after the pulling step:
disassembling: detaching the curved surface part (5) and the flexible electronic device (6) from the push-pull part;
post-treatment: removing the temporary substrate (7) from the curved part (5) and the flexible electronic device (6).
10. A curved surface transfer method using the curved surface transfer apparatus according to any one of claims 3 to 5, the curved surface transfer method comprising the steps of:
the installation step: -mounting the curved surface part (5) to the push-pull part, and mounting the flexible electronic device (6) to the surface of the elastic membrane (4) facing the push-pull part;
a pretreatment step: making the surface of the curved surface part (5) sticky;
a pushing step: pushing the curved part (5) into the cavity (31) by the push-pull portion by bringing the push-pull portion and the holder (3) closer to each other, the elastic film (4) deforming and pressing a portion of the flexible electronic device (6) located at least immediately before an advancing direction of the curved part (5) to the curved part (5);
a suction step: drawing gas from the sealed chamber through the gas port (24) to deform the elastic membrane (4) to wrap the curved part (5);
a drawing step: the curved surface part (5) to which the flexible electronic component (6) is attached is taken out of the cavity (31) by moving the push-pull portion and the holder (3) away from each other.
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| CN202010534781.8A CN111559164B (en) | 2020-06-12 | 2020-06-12 | Curved surface transfer printing device and curved surface transfer printing method for flexible electronic device |
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| CN114120830B (en) * | 2021-11-19 | 2022-12-06 | 大连理工大学 | Surface tension driven nano-scale flexible electronic transfer printing method |
| CN115230357B (en) * | 2022-08-08 | 2024-03-19 | 东莞市轩驰智能科技有限公司 | Concave curved surface printing method |
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| JP2891665B2 (en) * | 1996-03-22 | 1999-05-17 | 株式会社日立製作所 | Semiconductor integrated circuit device and method of manufacturing the same |
| NL1016431C2 (en) * | 2000-10-18 | 2002-04-22 | Univ Nijmegen | Method for separating a film and a substrate. |
| TWI283906B (en) * | 2001-12-21 | 2007-07-11 | Esec Trading Sa | Pick-up tool for mounting semiconductor chips |
| JP5717595B2 (en) * | 2011-03-29 | 2015-05-13 | 株式会社ミマキエンジニアリング | Curved surface printing method and printing system |
| CN110033704B (en) * | 2019-04-19 | 2022-07-19 | 京东方科技集团股份有限公司 | Transfer device and transfer method |
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