阅读说明：本技术 柔性面板的贴合方法及贴合装置 (Method and device for attaching flexible panel ) 是由 邓佳 王家林 范荣坤 吴胜强 孟雪 文元泓 马森林 秦朝学 王鹏 于 2020-03-31 设计创作，主要内容包括：本公开提供了一种柔性面板的贴合方法及贴合装置,在进行保护盖板和柔性面板贴合的过程中采用加热型光学胶,在常温下光学胶具有较低的粘性且低于可贴合阈值,使得在柔性面板与保护盖板的边缘贴合之前,光学胶和保护盖板的边缘提前接触后可以有效分离,避免弯折区存在的贴合不良,产生气泡和裂纹的风险较小,可以提高贴合良率。且在光学胶加热后粘性增大,可以保证柔性面板贴合在保护盖板上。并且,上述贴合方法可以适用于柔性面板与大弧度保护盖板之间的全贴合,尤其适用于180°倒扣式保护盖板的贴合。(The utility model provides a laminating method and laminating device of flexible panel, adopt heating type optical cement at the in-process of carrying out the laminating of protection apron and flexible panel, optical cement has lower viscidity and is less than can laminating threshold value at normal atmospheric temperature for before the edge laminating of flexible panel and protection apron, the edge of optical cement and protection apron can effectively separate after contacting in advance, avoid the laminating that the bending region exists bad, the risk that produces bubble and crackle is less, can improve the laminating yield. And the viscosity is increased after the optical cement is heated, so that the flexible panel can be attached to the protective cover plate. Moreover, the attaching method can be suitable for full attaching between the flexible panel and the large-radian protective cover plate, and is particularly suitable for attaching the 180-degree inverted protective cover plate.)

1. A method for attaching a flexible panel, comprising:

fixing the protective cover plate in the accommodating space of the attaching jig;

placing a flexible panel with optical cement on the surface on a bearing film, wherein the viscosity of the optical cement at normal temperature is smaller than a threshold value capable of being attached;

controlling a sliding block bearing the bearing film to move in the accommodating space along a set attaching direction, simultaneously controlling a driving piece to drive a flexible panel on the bearing film to form a shape matched with the protective cover plate, and attaching the flexible panel to the protective cover plate through heated optical cement; wherein the viscosity of the optical cement after heating is greater than the conformable threshold.

2. The attaching method according to claim 1, wherein the optical paste is heated by heating the slider.

3. The bonding method according to claim 1, wherein the optical paste is heated by locally heating a bonding jig bonded to the optical paste.

4. A method of applying according to claim 2 or 3, wherein the optical glue is heated before the flexible panel is applied to the protective cover sheet.

5. The attaching method according to claim 1, wherein the optical paste is heated at a temperature of 50 to 60 degrees.

6. The bonding method according to claim 5, wherein the viscosity of the optical adhesive at normal temperature is less than 100g/inch, and the viscosity of the optical adhesive after heating is more than 2000 g/inch.

7. The attaching method according to claim 1, wherein the protective cover plate includes a main body portion and two bent portions at both ends of the main body portion; the laminating jig comprises a first sub part and two second sub parts positioned at two ends of the first sub part, and the first sub part is detachably connected with the two second sub parts respectively;

in being fixed in the accommodation space of laminating tool, will protect the apron, specifically include:

detaching and separating the two second parts of the bonding jig from the first part;

the main body part of the protective cover plate is in contact matching with the first sub-part of the attaching jig;

and covering the two second parts of the attaching jig on the two bending parts of the protective cover plate respectively, and fixedly installing the two second parts on the first parts respectively.

8. The attaching method according to claim 7, wherein the controlling of the slider carrying the carrier film to move in the accommodating space along a set attaching direction specifically comprises:

controlling the sliding block to move at the first sub-part of the attaching jig so that the flexible panel is attached to the main body part of the protective cover plate;

and controlling the sliding block to move from the first subsection of the laminating jig to the second subsection, so that the flexible panel is laminated with the bent part of the protective cover plate.

9. The bonding method of claim 8, wherein the controlling the slider to move from the first section to the second section of the bonding tool comprises:

controlling the sliding block to move from the first subsection of the attaching jig to the second subsection of one side, and attaching the flexible panel to the bent part of one side of the protective cover plate;

and controlling the sliding block to move to the second subsection of the other side from the second subsection of one side of the laminating jig after passing through the first subsection, so that the flexible panel is laminated with the bent part of the other side of the protective cover plate.

10. The attaching method according to claim 8, wherein the controlling of the driving member drives the flexible panel on the carrier film to form a shape matching the protective cover, specifically comprising:

when the sliding block moves from the first subsection to the second subsection of the attaching jig, the driving piece is controlled to drive the edge of the flexible panel on the bearing film to form a curved surface with a bending degree larger than that of the bending part.

11. The bonding method of claim 8, wherein the first section of the bonding tool is heated before the slider is controlled to move on the first section of the bonding tool;

and heating the second part of the bonding jig when the slide block is controlled to move from the first part to the second part of the bonding jig.

12. A bonding apparatus applied to the bonding method according to any one of claims 1 to 11, comprising:

the attaching jig is configured to fix the protective cover plate; the shape of the attaching jig is the same as or similar to that of the protective cover plate, and the attaching jig is arranged in a bent mode to form an accommodating space; the protective cover plate is fixed in the accommodating space;

a carrier film configured to carry a flexible panel having an optical glue on a surface thereof;

a driving member configured to drive the flexible panel on the carrier film to match the shape of the protective cover plate;

the sliding block is configured to bear the bearing film to move in the accommodating space along a set attaching direction.

13. The laminating device of claim 12, wherein the protective cover includes a main body portion and two bent portions at opposite ends of the main body portion;

the attaching jig comprises a first sub-part and two second sub-parts positioned at two ends of the first sub-part; the first part has the same or similar shape with the main body part of the protective cover plate, and the two second parts have the same or similar shape with the two bending parts of the protective cover plate respectively; the first section is detachably connected to the two second sections, respectively.

14. The laminating device of claim 13, wherein the main body portion includes a flat plate portion and two 1/4 arc bending portions at opposite ends of the flat plate portion; the bending part comprises an 1/4 arc bending area, and the 1/4 arc bending area of the bending part is connected with the 1/4 arc bending area of the main body part to form 180-degree bending between the main body part and the bending part.

15. The laminating device of claim 12, wherein the carrier film includes a stretch beyond an edge of the flexible panel;

the drive includes a clamp configured to grip an edge of the stretching portion and a roller configured to support the stretching portion and change a shape of the stretching portion to change a degree of bending of the flexible panel edge.

16. The laminating apparatus according to claim 12, wherein the slider includes a plate-shaped bearing portion and a rod-shaped supporting portion, the plate-shaped bearing portion is fixedly connected to the rod-shaped supporting portion, the plate-shaped bearing portion is configured to bear the bearing film, the rod-shaped supporting portion is configured to support the plate-shaped bearing portion, and the slider has a T-shape in a cross-section perpendicular to a bearing surface of the plate-shaped bearing portion.

Technical Field

The present disclosure relates to display technologies, and particularly to a method and an apparatus for attaching a flexible panel.

Background

At present, the OLED flexible panel has been widely applied to various electronic products as a display component of electronic equipment, and with the development of a curved screen, the length of an arc region of a glass cover plate outside an OLED module is also longer and longer, which puts higher requirements on a full-lamination method of the glass cover plate and the flexible OLED. The current vacuum laminating technology can only meet the laminating of a glass cover plate with a small arc length and a display panel, and a corresponding coping scheme is lacked for the laminating of the glass cover plate with a large arc length and the display panel, particularly for the mode of 180-degree back-off laminating.

Disclosure of Invention

The embodiment of the disclosure provides a method for attaching a flexible panel, which includes:

fixing the protective cover plate in the accommodating space of the attaching jig;

placing a flexible panel with optical cement on the surface on a bearing film, wherein the viscosity of the optical cement at normal temperature is smaller than a threshold value capable of being attached;

controlling a sliding block bearing the bearing film to move in the accommodating space along a set attaching direction, simultaneously controlling a driving piece to drive a flexible panel on the bearing film to form a shape matched with the protective cover plate, and attaching the flexible panel to the protective cover plate through heated optical cement; wherein the viscosity of the optical cement after heating is greater than the conformable threshold.

In a possible implementation manner, in the attaching method provided by the embodiment of the present disclosure, the optical adhesive is heated by heating the slider.

In a possible implementation manner, in the above attaching method provided in the embodiment of the present disclosure, the optical cement is heated by locally heating the attaching jig attached to the optical cement.

In a possible implementation manner, in the above attaching method provided by the embodiment of the present disclosure, the optical adhesive is heated before the flexible panel is attached to the protective cover plate.

In a possible implementation manner, in the foregoing attaching method provided in the embodiments of the present disclosure, the temperature at which the optical cement is heated is 50 to 60 degrees.

In a possible implementation manner, in the attaching method provided by the embodiment of the present disclosure, the viscosity of the optical adhesive at normal temperature is less than 100g/inch, and the viscosity of the optical adhesive after heating is greater than 2000 g/inch.

In a possible implementation manner, in the attaching method provided by the embodiment of the present disclosure, the protective cover plate includes a main body portion and two bending portions located at two ends of the main body portion; the laminating jig comprises a first sub part and two second sub parts positioned at two ends of the first sub part, and the first sub part is detachably connected with the two second sub parts respectively;

in being fixed in the accommodation space of laminating tool, will protect the apron, specifically include:

detaching and separating the two second parts of the bonding jig from the first part;

the main body part of the protective cover plate is in contact matching with the first sub-part of the attaching jig;

and covering the two second parts of the attaching jig on the two bending parts of the protective cover plate respectively, and fixedly installing the two second parts on the first parts respectively.

In a possible implementation manner, in the foregoing attaching method provided in the embodiment of the present disclosure, the controlling the slider bearing the carrier film to move in the accommodating space along a set attaching direction specifically includes:

controlling the sliding block to move on the first sub-part of the attaching jig so that the flexible panel is attached to the main body part of the protective cover plate;

and controlling the sliding block to move from the first subsection of the laminating jig to the second subsection, so that the flexible panel is laminated with the bent part of the protective cover plate.

In a possible implementation manner, in the foregoing attaching method provided in an embodiment of the present disclosure, the controlling the slider to move from the first sub-portion to the second sub-portion of the attaching jig specifically includes:

controlling the sliding block to move from the first subsection of the attaching jig to the second subsection of one side, and attaching the flexible panel to the bent part of one side of the protective cover plate;

and controlling the sliding block to move to the second subsection of the other side from the second subsection of one side of the laminating jig after passing through the first subsection, so that the flexible panel is laminated with the bent part of the other side of the protective cover plate.

In a possible implementation manner, in the above attaching method provided in the embodiment of the present disclosure, the controlling driving part drives the flexible panel on the carrier film to form a shape matching the protection cover plate, which specifically includes:

when the sliding block moves from the first subsection to the second subsection of the attaching jig, the driving piece is controlled to drive the edge of the flexible panel on the bearing film to form a curved surface with a bending degree larger than that of the bending part.

In a possible implementation manner, in the bonding method provided in the embodiment of the present disclosure, before the slider is controlled to move on the first section of the bonding jig, the first section of the bonding jig is heated;

and heating the second part of the bonding jig when the slide block is controlled to move from the first part to the second part of the bonding jig.

On the other hand, the embodiment of the present disclosure further provides a bonding apparatus, which is applied to the bonding method provided by the embodiment of the present disclosure, and includes:

the attaching jig is configured to fix the protective cover plate; the shape of the attaching jig is the same as or similar to that of the protective cover plate, and the attaching jig is arranged in a bent mode to form an accommodating space; the protective cover plate is fixed in the accommodating space;

a carrier film configured to carry a flexible panel having an optical glue on a surface thereof;

a driving member configured to drive the flexible panel on the carrier film to match the shape of the protective cover plate;

the sliding block is configured to bear the bearing film to move in the accommodating space along a set attaching direction.

In a possible implementation manner, in the above pasting device provided in this disclosure, the protective cover plate includes a main body portion and two bending portions located at two ends of the main body portion;

the attaching jig comprises a first sub-part and two second sub-parts positioned at two ends of the first sub-part; the first part has the same or similar shape with the main body part of the protective cover plate, and the two second parts have the same or similar shape with the two bending parts of the protective cover plate respectively; the first section is detachably connected to the two second sections, respectively.

In one possible implementation manner, in the above pasting device provided by the embodiment of the present disclosure, the main body portion includes a flat plate area and two 1/4 circular arc bending areas respectively located at two ends of the flat plate area; the bending part comprises an 1/4 arc bending area, and the 1/4 arc bending area of the bending part is connected with the 1/4 arc bending area of the main body part to form 180-degree bending between the main body part and the bending part.

In one possible implementation manner, in the above laminating device provided by the embodiment of the present disclosure, the carrier film includes a stretching portion that extends beyond the edge of the flexible panel;

the drive includes a clamp configured to grip an edge of the stretching portion and a roller configured to support the stretching portion and change a shape of the stretching portion to change a degree of bending of the flexible panel edge.

In a possible implementation manner, in the above pasting device provided in this disclosure, the slider includes a plate-shaped bearing portion and a rod-shaped supporting portion, the plate-shaped bearing portion is fixedly connected to the rod-shaped supporting portion, the plate-shaped bearing portion is configured to bear the bearing film, the rod-shaped supporting portion is configured to support the plate-shaped bearing portion, and a cross-sectional shape of the slider along a direction perpendicular to a bearing surface of the plate-shaped bearing portion is "T" shaped.

Drawings

FIG. 1 is a schematic structural view of a bonding apparatus in the related art;

fig. 2 is a flowchart of a fitting method provided in the embodiment of the present disclosure;

fig. 3 is a flowchart of a fitting method provided in the embodiment of the present disclosure;

fig. 4 is a flowchart of a fitting method provided in the embodiment of the present disclosure;

fig. 5a to 5d are schematic structural views of a bonding apparatus according to an embodiment of the present disclosure;

fig. 6 is a schematic structural view of a bonding jig in the bonding apparatus provided in the embodiment of the present disclosure.

Detailed Description

At present, after the flexible OLED display panel is manufactured, a protective cover plate is required to be attached to the outer side of a display screen of the flexible OLED display panel so as to protect the OLED display panel. In order to realize 3D display of the OLED display panel, the edge face of the OLED display panel is generally configured as an arc-shaped face, so that when displaying, an image of the edge area can be normally displayed, and therefore, the edge face of the protective cover plate is also generally configured as an arc-shaped face.

The flexible OLED display panel is attached to the protective cover plate through an attaching jig. The existing bonding jig may be configured to be an integral block structure, as shown in fig. 1, a carrying surface of the existing bonding jig is used for carrying a carrying film 4, and the carrying film 4 is used for carrying a flexible OLED display panel 7. During fitting, the block-shaped structure 10 moves upwards to be close to the protective cover plate 8, the clamping structure 9 clamps the bearing film 4 to realize profiling of the flexible OLED display panel 7, namely, the flexible OLED display panel 7 is similar to the protective cover plate 8 in shape, and therefore the flexible OLED display panel 7 and the protective cover plate 8 are integrally fitted.

As can be seen from fig. 1, in the process of upward moving and attaching the block-shaped structure 10, the moving space of the clamping structure 9 in the auxiliary profiling process is particularly limited, which easily results in insufficient profiling of the flexible OLED display panel 7, the flexible OLED display panel 7 contacts the edge of the protective cover plate 8 in advance, thereby resulting in too tight or too loose of the flexible OLED display panel 7 in the attaching process, the too loose of the flexible OLED display panel is easy to generate bubbles between the flexible OLED display panel 7 and the protective cover plate 8, the too tight of the flexible OLED display panel 7 is easy to crack and damage, and the attaching quality of the flexible OLED display panel and the protective cover plate 8 is seriously affected.

In addition, in the laminating process of the protective cover plate bent in a large radian and the flexible substrate, due to the stress influence of the OLED display panel 7, the phenomenon of advanced contact between the Optical Cement (OCA) and the edge of the protective cover plate 8 inevitably occurs during laminating in a bending area, and once the optical cement and the protective cover plate are contacted, the protective cover plate cannot be effectively separated and laminated again, so that the problems of incomplete laminating in the bending area, generation of bubbles/wrinkles and the like are caused.

The embodiment of the disclosure provides a flexible panel laminating method and a flexible panel laminating device, aiming at the problem of low laminating yield between a protective cover plate and a flexible substrate which are bent in a large radian. In order to make the purpose, technical solutions and advantages of the present disclosure more clear, specific embodiments of a method and an apparatus for attaching a flexible panel according to an embodiment of the present disclosure are described in detail below with reference to the accompanying drawings. It is to be understood that the preferred embodiments described below are for purposes of illustration and explanation only and are not intended to limit the present disclosure. And the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.

The shapes and sizes of the various elements in the drawings are not to scale and are merely intended to illustrate the present disclosure.

The attaching method of the flexible panel provided by the embodiment of the present disclosure, as shown in fig. 2, may include the following steps:

s101, fixing a protective cover plate in an accommodating space of the attaching jig;

s102, placing a flexible panel with optical cement on the surface on a bearing film, wherein the viscosity of the optical cement at normal temperature is smaller than a threshold value capable of being attached;

s103, controlling the slide block bearing the bearing film to move in the accommodating space along a set attaching direction, controlling the driving piece to drive the flexible panel on the bearing film to form a shape matched with the protective cover plate, and attaching the flexible panel to the protective cover plate through heated optical cement; wherein the viscosity of the optical cement after heating is larger than the conformable threshold.

Specifically, in the above attaching method provided in the embodiment of the present disclosure, the heating type optical adhesive is used in the process of attaching the protective cover plate and the flexible panel, and the optical adhesive has lower viscosity at normal temperature, so that the interference problem existing when the flexible panel is attached to the bending region of the protective cover plate can be prevented, that is, the optical adhesive and the edge of the protective cover plate are contacted in advance to prevent the optical adhesive from being unable to be effectively separated, so that the bending region generates bubbles or wrinkles, and other undesirable problems. Because the optical cement is low in viscosity at normal temperature and lower than the laminating threshold, the laminating threshold refers to a numerical value that the viscosity can enable the flexible panel and the protective cover plate to be inseparable after being contacted, and therefore before the flexible panel is laminated with the edge of the protective cover plate, the optical cement can be effectively separated after being contacted with the edge of the protective cover plate in advance, poor lamination in a bending area is avoided, risks of bubbles and cracks are low, and the laminating yield can be improved. And the viscosity is increased after the optical cement is heated, so that the flexible panel can be attached to the protective cover plate. Moreover, the attaching method can be suitable for full attaching between the flexible panel and the large-radian protective cover plate, and is particularly suitable for attaching the 180-degree inverted protective cover plate.

Optionally, in the attaching method provided by the embodiment of the present disclosure, the optical adhesive may be heated by heating the slider.

Or, optionally, in the attaching method provided in the embodiment of the present disclosure, the optical adhesive may be heated by locally heating the attaching jig attached to the optical adhesive.

And, optionally, in the above attaching method provided in the embodiment of the present disclosure, the optical adhesive may be heated before the flexible panel is attached to the protective cover plate. Specifically, when the optical cement is heated by heating the slider, the slider can be heated before the carrier film carried by the slider is attached to the protective cover plate in the accommodating space, so that the optical cement on the surface of the flexible panel above the carrier film is heated by the action of heat conduction. When optical cement is heated by adopting a mode of locally heating the attaching jig, the bearing film borne by the slider can heat the corresponding area of the attaching jig before attaching to the protective cover plate in the accommodating space, so that the protective cover plate is heated through the heat conduction effect, and the optical cement to be contacted with the protective cover plate is heated.

Alternatively, optionally, in the attaching method provided in the embodiment of the present disclosure, the optical adhesive may also be heated while the flexible panel is attached to the protective cover plate, which is not limited herein. Specifically, when the optical cement is heated by adopting the mode of heating the slider, the slider can be heated while the bearing film borne by the slider is attached to the protective cover plate in the accommodating space, so that the optical cement on the surface of the flexible panel above the bearing film is heated through the action of heat conduction. When optical cement is heated by adopting a mode of locally heating the laminating jig, the bearing film borne by the slider can be laminated with the protective cover plate in the accommodating space, and meanwhile, the corresponding region of the laminating jig is heated, so that the protective cover plate is heated through the heat conduction effect, and the optical cement in contact with the protective cover plate is heated.

Optionally, in the attaching method provided by the embodiment of the present disclosure, the heating temperature of the optical cement may be controlled to be 50-60 degrees, so as to ensure that the heated optical cement has a relatively high viscosity, fix the flexible panel on the protective cover plate, and avoid damaging the film layer function on the flexible panel due to high temperature.

Optionally, in the attaching method provided by the embodiment of the present disclosure, the viscosity of the optical adhesive at normal temperature is generally less than 100g/inch, so as to ensure that the optical adhesive and the edge of the protective cover plate can be effectively separated even after contacting in advance; the viscosity of the heated optical cement is generally larger than 2000g/inch, so that the heated optical cement can be effectively attached to the protective cover plate and the flexible panel.

Optionally, in the attaching method provided in the embodiment of the present disclosure, as shown in fig. 6, the protective cover 2 may include a main body 21 and two bending portions 22 located at two ends of the main body 21; correspondingly, the attaching jig 1 may include a first part 11 and two second parts 12 located at two ends of the first part 11, and the first part 11 is detachably connected to the two second parts 12 respectively;

in the step S101, the protection cover plate is fixed in the accommodating space of the attaching jig, as shown in fig. 3, the protection cover plate may specifically include:

s201, detaching and separating two second parts of the bonding jig from the first part;

s202, contacting and matching the main body part of the protective cover plate with the first sub-part of the attaching jig;

and S203, covering the two second parts of the attaching jig on the two bending parts of the protective cover plate respectively, and fixedly installing the two second parts on the first parts respectively.

Specifically, setting up laminating tool 1 into detachable triplex (first subdivision 11 and two second subdivisions 12 that are located first subdivision 11 both ends), can be convenient for place 180 back-off formula protection cover plate 2 in laminating tool 1's accommodation space to and with operations such as 180 back-off formula protection cover plate 2 is fixed. Moreover, the attaching jig 1 may be heated locally, that is, when the main body 21 of the protective cover 2 needs to be attached to the flexible panel 5, only the first sub-portion 11 of the attaching jig 1 may be heated, and the edge of the flexible panel 5 may be effectively separated from the bent portion 22 of the protective cover 2 after being brought into contact with the bent portion in advance.

Optionally, in the attaching method provided in this embodiment of the disclosure, the step 103 of controlling the slider bearing the carrier film to move in the accommodating space along the set attaching direction may specifically include:

s301, controlling the sliding block to move at the first sub-part of the attaching jig, and attaching the flexible panel to the main body part of the protective cover plate; specifically, as shown in fig. 5a, the slider may be controlled to move first in the central region of the first part of the bonding jig, and then slide from the central region to the edge region;

s302, the sliding block is controlled to move from the first subsection to the second subsection of the attaching jig, and the flexible panel is attached to the bending part of the protective cover plate.

Specifically, in the attaching process, the flexible panel is first attached to the main body portion of the protective cover plate, and then the flexible panel is attached to the bent portion of the protective cover plate. The flexible panel is firstly attached to the non-bending part of the protective cover plate, the flexible panel is convenient to fix on the protective cover plate, then the flexible panel is extended to the edge bending part from the non-bending part to be attached, the attaching process is convenient to control accurately, bubbles or damage of the flexible panel in the attaching process are avoided, and the attaching quality is improved.

Optionally, in the attaching method provided in the embodiment of the present disclosure, when there is one slider, the step S302 of controlling the slider to move from the first part to the second part of the attaching jig may specifically include:

firstly, the slide block is controlled to move from the first subsection of the attaching jig to the second subsection of one side, so that the flexible panel is attached to the bent part of one side of the protective cover plate, as shown in fig. 5 b;

then, the control slider passes through the first subsection from the second subsection on one side of the bonding jig (as shown in fig. 5 c) and then moves to the second subsection on the other side, as shown in fig. 5d, so that the flexible panel is bonded with the other side bending part of the protective cover plate.

Specifically, after a slider is adopted to slide to a first subsection of a bonding jig for bonding as shown in fig. 5a, the slider slides to a second subsection on one side, as shown in fig. 5b, the bonding of a bent part on one side is completed, and then, as shown in fig. 5c, the slider slides to a second subsection on the other side through the first subsection, as shown in fig. 5d, the sliding track of the slider can be accurately controlled, so that the bonding quality can be accurately controlled.

Alternatively, when there are two sliders, the step S302 of controlling the sliders to move from the first part to the second part of the bonding jig may specifically include: and simultaneously controlling the two sliding blocks to move to the second subsection on one side from the first subsection of the laminating jig respectively so as to laminate the flexible panel and the bending parts on the two sides of the protective cover plate.

Specifically, after the two sliding blocks slide to be attached to the first sub-portion of the attaching jig, the two sliding blocks slide to the second sub-portions on the two sides respectively and simultaneously, the attaching of the bending portions on the two sides is completed, attaching time can be saved, and time cost is saved.

Optionally, in the attaching method provided in the embodiment of the present disclosure, the step S103 of controlling the driving element to drive the flexible panel on the carrier film to form a shape matching the protection cover plate may specifically include:

when the slider moves from the first subsection to the second subsection of the attaching jig, the driving part is controlled to drive the edge of the flexible panel on the bearing film to form a curved surface with a bending degree larger than that of the bending part, so that the optical cement is prevented from contacting the edge of the protective cover plate in advance as far as possible.

Optionally, in the attaching method provided in the embodiment of the present disclosure, before the slider is controlled to move on the first part of the attaching jig, the first part of the attaching jig may be heated, as shown by an arrow in fig. 5a, so that when the slider moves on the first part of the attaching jig, the heated optical glue may directly attach the flexible panel to the region corresponding to the protective cover plate;

when the slider is controlled to move from the first part to the second part of the bonding jig, as shown by arrows in fig. 5b and 5d, the second part of the bonding jig is heated, so that when the slider moves on the second part of the bonding jig, the heated optical cement can directly bond the flexible panel to the region corresponding to the protective cover plate.

Based on the same inventive concept, an embodiment of the present disclosure further provides a bonding apparatus, which is applied to the bonding method provided in the embodiment of the present disclosure, and the bonding apparatus is shown in fig. 5a to 5d, and specifically includes:

a bonding jig 1 configured to fix a protective cover plate 2; the shape of the attaching jig 1 is the same as or similar to that of the protective cover plate 2, and the attaching jig 1 is arranged in a bent mode to form an accommodating space; the protective cover plate 2 is fixed in the accommodating space; specifically, the protective cover 2 may be a glass cover;

a carrier film 3 configured to carry a flexible panel 5 having an optical adhesive 4 on a surface thereof;

a driving member 6 configured to drive the flexible panel 5 on the carrier film 3 to match the shape of the protective cover 2;

and a slider 7 configured to move the carrier film 3 in the predetermined attaching direction in the accommodating space.

Specifically, in the above-mentioned bonding device provided in the embodiment of the present disclosure, the bonding jig 1, the driving element 6, and the slider 7 may be installed at the bottom of the vacuum chamber, and the carrier film 3 is placed on the slider 7, and both ends of the carrier film are fixed to the driving element 6.

Specifically, the above attaching device provided by the embodiment of the present disclosure is used in cooperation with the above attaching method, and the heating type optical cement 4 is adopted in the attaching process of the protective cover plate 2 and the flexible panel 5, and the optical cement 4 has lower viscosity at normal temperature, so that the problem of interference existing when the flexible panel 5 is attached to the bending region of the protective cover plate 2 can be prevented, that is, the optical cement 4 and the edge of the protective cover plate 2 are contacted in advance to cause ineffective separation, and the bending region generates bubbles or wrinkles and other undesirable problems. Because the viscidity is lower and be less than can laminating threshold value at ordinary temperature for optical cement 4, wherein can laminate the threshold value and refer to viscidity and can make flexible panel 5 and protective cover plate 2 inseparable numerical value after the contact, like this for before the edge laminating of flexible panel 5 and protective cover plate 2, optical cement 4 can effectively separate after contacting in advance with protective cover plate 2's edge, avoid the laminating that the bending region exists bad, the risk that produces bubble and crackle is less, can improve the laminating yield. And the viscosity is increased after the optical cement 4 is heated, so that the flexible panel 5 can be ensured to be attached to the protective cover plate 2. Moreover, the laminating device can be suitable for the full lamination between the flexible panel 5 and the large-radian protective cover plate 2, and is particularly suitable for the lamination of the 180-degree reverse buckling protective cover plate 2.

Alternatively, in the above-described attaching device provided in the embodiment of the present disclosure, as shown in fig. 6, the protective cover 2 may include a main body portion 21 and two bent portions 22 located at two ends of the main body portion 21;

correspondingly, the attaching jig 1 comprises a first part 11 and two second parts 12 positioned at two ends of the first part 11; the first sub-part 11 has the same or similar shape as the main body part 21 of the protective cover 2, and the two second sub-parts 12 have the same or similar shape as the two bent parts 22 of the protective cover 2; the first subsection 11 is detachably connected to two second subsections 12, respectively.

Specifically, laminating tool 1 is unanimous with protection apron 1's shape, both can realize the good fixed effect to protection apron 2, can support for protection apron 2 again, avoids the pressure of laminating process to lead to protection apron 2 broken. And will laminate tool 1 and set up to detachable triplex (first subdivision 11 and be located two second subdivisions 12 at first subdivision 11 both ends), can be convenient for place protection cover plate 2 in the accommodation space of laminating tool 1, and will protect operation such as cover plate 2 is fixed, and, also can be convenient for local heating laminating tool 1, when the main part 21 that will protect cover plate 2 is laminated flexible panel 5 promptly, only heat first subdivision 11 of laminating tool 1, can effectively separate after the edge of flexible panel 5 and kink 22 of protection cover plate 2 contact in advance.

Alternatively, in the above-described pasting device provided in the embodiment of the present disclosure, as shown in fig. 6, the main body portion 21 may include a flat plate region D and two 1/4 circular arc bending regions R1 located at both ends of the flat plate region D; the bending part 22 comprises an 1/4 arc bending region R2, and the 1/4 arc bending region R2 of the bending part 22 is connected with the 1/4 arc bending region R1 of the main body part 21 to form a 180-degree bend between the main body part 21 and the bending part 22. In other words, the protective cover 2 has two ends bent at 180 degrees, the bent portion has a semicircular arc shape, and the body 21 and the bent portion 22 equally divide the semicircular arc-shaped bent portion and each have 1/4 arc bent regions. Accordingly, the first part 11 and the two second parts 12 of the bonding jig 1 are provided in the same manner as the main body portion 21 and the two bent portions 22 of the protective cover 2.

Specifically, when the operation of fixing the protective cover 2 is performed, the two second sub-portions 12 of the bonding jig 1 may be detached from the first sub-portion 11; then, the main body part 21 of the protective cover plate 2 is in contact matching with the first subsection 11 of the attaching jig 1; afterwards, the two second subsections 12 of the attaching jig 1 are respectively covered on the two bending parts 22 of the protective cover 2, and the two second subsections 12 are respectively fixedly installed on the first subsections 11, so that the protective cover 2 can be fixed in the accommodating space of the attaching jig 1.

Alternatively, in the above-described laminating device provided in the embodiment of the present disclosure, as shown in fig. 5a to 5d, the carrier film 3 may include a stretching portion 31 extending beyond the edge of the flexible panel 5;

the driving member 6 may include a jig 61 and a roller 62, the jig 61 being configured to grip an edge of the stretching portion 31, the roller 62 being configured to support the stretching portion 31 and change a shape of the stretching portion 31 to change a degree of bending of the edge of the flexible panel 5.

Specifically, the roller shaft 62 coincides with the edge extension direction of the stretching part 31. The clamp 61 has a certain width along the extending direction of the edge of the stretching part 31, and can be clamped on a section of wider edge in the extending direction of the edge of the stretching part 31, so that the tensile force acting on the stretching part 31 is uniformly distributed, and the acting effect is better. The driving member 6 may further include a servo motor, and the servo motor may be in transmission connection with the clamp 61 to drive the clamp 61 to stretch the edge of the stretching portion 31 of the carrier film 3. As shown in fig. 5a to 5d, taking the orientation in fig. 5a to 5d as an example, the carrier film 3 is attached to one side of the flexible panel 5 and placed on the slider 7 together with the flexible panel 5, the stretching portion 31 of the carrier film 3 can extend downward around the roller 62, the edge of the stretching portion 31 clamps the clamp 61, the clamp 61 can be connected to the servo motor, the servo motor drives the clamp 61 to stretch the edge of the stretching portion 31, and under the action of the tensile force, the carrier film 3 can change the bending shape and drive to change the bending degree of the edge of the flexible panel 5.

Alternatively, in the above-mentioned pasting device provided in the embodiment of the present disclosure, as shown in fig. 5a to 5d, the slider 7 includes a plate-shaped bearing portion 71 and a rod-shaped supporting portion 72, the plate-shaped bearing portion 71 is fixedly connected to the rod-shaped supporting portion 72, the plate-shaped bearing portion 71 is configured to bear the carrier film 3, the rod-shaped supporting portion 72 is configured to support the plate-shaped bearing portion 71, and the slider 7 has a T-shaped cross section along a direction perpendicular to a bearing surface of the plate-shaped bearing portion 71.

Specifically, through making the cross sectional shape of platelike bearing part 71 and shaft-like supporting part 72 be "T" font, for current massive structure, can make driving piece 6 at the removal regulation space increase of flexible panel 5 with the profile modeling laminating in-process of protection apron 2, thereby make the profile modeling of flexible panel 5 more abundant, avoid flexible panel 5 to contact protection apron 2 edge in advance as far as possible, then avoid the laminating in-process to produce the bubble or make flexible panel 5 break and damage, the laminating quality of flexible panel 5 with protection apron 2 has been promoted.

According to the laminating method and the laminating device of the flexible panel, the heating type optical cement is adopted in the process of laminating the protective cover plate and the flexible panel, the optical cement has lower viscosity and is lower than a laminating threshold value at normal temperature, so that before the edge of the flexible panel and the protective cover plate is laminated, the optical cement and the edge of the protective cover plate can be effectively separated after contacting in advance, the laminating defect existing in a bending area is avoided, the risk of generating bubbles and cracks is lower, and the laminating yield can be improved. And the viscosity is increased after the optical cement is heated, so that the flexible panel can be attached to the protective cover plate. Moreover, the attaching method can be suitable for full attaching between the flexible panel and the large-radian protective cover plate, and is particularly suitable for attaching the 180-degree inverted protective cover plate.

It will be apparent to those skilled in the art that various changes and modifications can be made in the present disclosure without departing from the spirit and scope of the disclosure. Thus, if such modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include such modifications and variations as well.