CN110930880A - Display module and manufacturing method thereof - Google Patents
Display module and manufacturing method thereof Download PDFInfo
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- CN110930880A CN110930880A CN201911181623.2A CN201911181623A CN110930880A CN 110930880 A CN110930880 A CN 110930880A CN 201911181623 A CN201911181623 A CN 201911181623A CN 110930880 A CN110930880 A CN 110930880A
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- display panel
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- panel body
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention relates to a display module and a manufacturing method thereof, wherein the display module comprises a display panel body, a support film and a protective film; the protective film is arranged on one side of the support film, and the display panel body is attached to one side of the support film, which is far away from the protective film; the orthographic projection of display panel body and support membrane orientation protection film overlaps each other with the part of protection film, another part and display panel body and support membrane that is equivalent to the protection film do not overlap, the lateral wall of the relative display panel body of a part of protection film is salient, can touch external member earlier in the transportation, bear external member's striking, and make the flexible display panel who supports on the membrane avoid external member, prevent that flexible display panel from receiving external member's striking, especially to the striking of flexible display panel side, prevent that flexible display panel from damaging in display module's production process.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display module and a manufacturing method of the display module.
Background
The OLED (Organic Light Emitting diode) has the advantages of wide viewing angle, high contrast, low power consumption, fast response speed, wide working temperature range, etc., and has attracted much attention in the display field. With the progress of science and technology and the development of society, the flexible display panel gradually walks into the visual field of consumers, and the bendable and stretchable panel brings brand-new user experience to the consumers while facilitating the life of the consumers. The flexible display panel is lighter and thinner in size and lower in power consumption, the cruising ability of equipment is improved, meanwhile, the application field of products is greatly widened due to the characteristics of flexibility and good flexibility, and interpersonal interaction feeling is improved.
In the actual production and manufacturing process, a flexible display panel is usually manufactured and formed on a glass substrate, then the manufactured flexible display panel is peeled off from the glass substrate, the peeled flexible display panel is loaded on a support film, the support film provides stiffness for the flexible display panel, and the flexible display panel is loaded on a production line and transferred to other stations for product performance detection, dispensing or module assembly. However, when the conventional flexible display panel is transported and detected in a production line, the screen body may be damaged.
Disclosure of Invention
Accordingly, there is a need for a display module that prevents damage to a flexible display panel during the manufacturing process.
A display module comprises a display panel body, a support film and a protective film;
the protective film is arranged on one side of the support film, and the display panel body is attached to one side, away from the protective film, of the support film;
an orthographic projection of the display panel body and the support film toward the protective film overlaps with a portion of the protective film.
The supporting structure is used for bearing the flexible display panel, after the flexible display panel is manufactured, the flexible display panel is attached to the surface, back to the protective film, of the supporting film, and the flexible display surface is supported through the supporting film. Simultaneously, the orthographic projection of display panel body and support membrane orientation protection film overlaps each other with the part of protection film, another part and display panel body and the support membrane who is equivalent to the protection film do not overlap, the lateral wall protrusion of the relative display panel body of a part of protection film, can touch external member earlier in the transportation, bear external member's striking, and make the flexible display panel who supports on the membrane avoid external member, prevent that flexible display panel from receiving external member's striking, especially to the striking of flexible display panel side, prevent that flexible display panel from damaging in display module's production process.
In one embodiment, the orthographic projection of the display panel body towards the protective film falls within the range of the orthographic projection of the support film towards the protective film;
in one embodiment, an orthographic projection of the display panel body towards the protective film completely overlaps with an orthographic projection of the support film towards the protective film.
In one embodiment, an orthographic projection of the display panel body and the support film toward the protective film completely falls within a range of the protective film.
In one embodiment, the edge of the support film is spaced a first predetermined distance from the edge of the protection film.
In one embodiment, the display panel further comprises a chip on film, wherein the display panel body is provided with a binding region;
the binding end of the chip on film is connected to one surface of the binding area, which faces away from the support film, and the support film is retracted by a second preset distance relative to the edge of the binding area.
The present invention also provides a display module, comprising:
the flexible display panel comprises a support film and a display panel body arranged on one side of the support film; and
a protective film attached to a side of the support film facing away from the display panel body;
an orthographic projection of the flexible display panel and the support film toward the protective film overlaps with a portion of the protective film.
In one embodiment, the orthographic projection of the flexible display panel towards the protective film falls into the orthographic projection of the support film towards the protective film.
In one embodiment, the protective film is detachably disposed on the support film.
In one embodiment, the display module further comprises an adhesive glue layer with variable viscosity in response to the change of the environmental conditions of the environment;
the protective film is attached to the support film through the adhesive layer.
The invention also provides a manufacturing method of the display module, which comprises the following steps:
providing a support film;
attaching a protective film on one side of a support film, and attaching a display panel body to one side, opposite to the protective film, of the support film;
wherein an orthographic projection of the display panel body and the support film toward the protective film and a portion of the protective film overlap each other.
Drawings
FIG. 1 is a schematic view of a display module according to an embodiment of the present invention;
FIG. 2 is a schematic view of the display module shown in FIG. 1;
fig. 3 is a schematic structural diagram of the display module shown in fig. 1 in another state.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As described in the background, conventional flexible display panels are easily damaged during processes such as transportation. Because the flexible display panel is light and thin, the strength of the flexible display panel is low, and the flexible display panel is easy to damage under external force impact. In order to solve the above problems, the present invention provides a display module, which can better solve the above problems.
FIG. 1 is a schematic view of a display module according to an embodiment of the present invention;
FIG. 2 is a schematic view of another view angle of the display module shown in FIG. 1; fig. 3 is a schematic structural diagram of the display module shown in fig. 1 in another state. For convenience of description, the present application only shows structures related to the present application.
As shown in fig. 1 and fig. 2, an embodiment of the invention provides a display module 100, which includes a flexible display panel 10 and a cover plate, wherein the flexible display panel 10 is used for displaying images, and the cover plate is disposed outside the flexible display panel 10 to protect the flexible display panel 10.
Specifically, the flexible display panel 10 includes a display panel body 12 and a support film 14.
The display panel body 12 may be a flexible organic light emitting display panel, specifically, a flexible OLED light emitting display panel, and the display panel body 12 may also be other flexible and bendable screens, for example, a Micro LED flexible display panel, a quantum dot flexible display panel, and the like, which is not limited herein. Specifically, in some embodiments, the display panel body 12 is an OLED display panel, and at least includes a substrate, a driving layer group, a planarization layer, an anode, a pixel defining layer, an organic light emitting unit, and a cathode, which are sequentially disposed, and a voltage is applied between the anode and the cathode to excite carrier migration, so as to act on the organic light emitting unit, thereby emitting light. It should be noted that, since the structural configuration of the display panel body 12 is not the focus of the present invention, the detailed structure and principle thereof are not described herein.
The support film 14 is disposed on one side of the display panel body 12 to support the display panel body 12. On one hand, the support film 14 provides support for the flexible display panel body 12, so that the display panel body 12 has certain stiffness, and the display panel body 12 can keep the due shape thereof, thereby facilitating assembly. On the other hand, the support film 14 supports the display panel body 12, and the display panel body 12 is not easily damaged due to its thinness, so as to protect the display panel body 12.
The display panel body 12 has a light-emitting side, and the support film 14 is located on a side of the display panel body 12 departing from the light-emitting side. For example, as shown in fig. 1, the left side surface of the display panel body 12 is a light emitting surface, and the support film 14 is supported on the non-light emitting surface of the display panel body 12, that is, the right side surface of the display panel body 12. Of course, the display module further includes a bonding adhesive layer for bonding the display panel body 12 and the support film 14. The adhesive layer is used to attach the display panel body 12 and the support film 14, and thus may be pre-attached to the display panel body 12 or the support film 14.
The display module 100 further includes a protection film 30, the protection film 30 is disposed on one side of the support film 14, the display panel body 12 is attached to one side of the support film 14 opposite to the protection film 30, and the orthographic projections of the display panel body 12 and the support film 14 to the protection film 300 are overlapped with the portion of the protection film 30, which is equivalent to that the other portion of the protection film 30 is not overlapped with the display panel body 12 and the support film 14, and a portion of the protection film 30 protrudes out of the sidewall of the display panel body 12.
After the display panel body 12 is manufactured, the display panel body 12 is attached to the side of the support film 14 opposite to the protection film 30, and the display panel body 12 is supported by the support film 14. Meanwhile, a part of the protection film 30 protrudes from the side wall of the display panel body 12, and can contact with external components to bear the impact of the external components in the transferring process, so that the display panel body 12 on the support film 14 avoids the external components, the display panel body 12 is prevented from being impacted by the external components, especially the impact on the side surface of the display panel body 12, and the display panel body 12 is prevented from being damaged in the production process of the display module 100.
Further, the orthographic projection of the display panel body 12 towards the protective film 30 falls within the range of the orthographic projection of the support film 14 towards the protective film 30, so that the display panel body 12 and the support film 14 are stacked on each other, and the display panel body 12 is supported by the support film 14.
Specifically, in some embodiments, the edge of the support film 14 is spaced apart from the edge of the protection film 30 by a first predetermined distance in a direction parallel to the display panel body 12, such that the protection film 30 protrudes from the support film 14 and the display panel body 12. When the display panel body 12 is transported on a production line, the moving direction of the display panel body 12 is a direction parallel to itself. Therefore, the protective film 30 is disposed long in a direction parallel to the display panel body 12, and the protective film 30 may first hit and block the external component during the transportation process, so that the display panel body 12 avoids the external component and protects the display panel body 12.
That is, the projection of the protection film 30 to the display panel body 12 at least partially exceeds the display panel body 12, and the protection film 30 protrudes from the display panel body 12 in a direction parallel to the display panel body 12.
In some embodiments, the orthographic projection of the display panel body 12 and the support film 14 toward the protection film 30 completely falls within the range of the protection film 30, which is equivalent to that the whole display panel body 12 and the whole support film 14 are located on the protection film 30, and a portion of the protection film 30 exceeds the display panel body 12 in a direction parallel to the display panel body 12, so as to protect the display panel body 12.
Further, the projection of the protection film 30 to the display panel body 12 completely exceeds the whole periphery of the flexible display surface 10, which is equivalent to that in the direction parallel to the display panel body 12, the whole periphery of the protection film 30 completely protrudes out of the periphery of the display panel body 12, so that external components are blocked from all sides of the display panel body 12, and the display panel body 12 is protected in all directions.
In particular, in some embodiments, the orthographic projection of the display panel body 12 towards the protective film 30 completely overlaps with the orthographic projection of the support film 30 towards the protective film 30. That is, the display panel body 12 is aligned with the outer periphery of the support film 14, and the edge of the protection film 30 protrudes beyond the support film 30 and the display panel body 12.
As shown in fig. 1 and fig. 3, in other embodiments, the display module 100 further includes a Chip On Film (COF) 50, the display panel body 12 has a bonding area 121, and the bonding end 52 of the COF 50 is connected to a side of the bonding area 121 opposite to the supporting film 14, so as to electrically connect the display panel to the control circuit through the COF 50. Moreover, the edge of the support film 14 opposite to the bonding region 121 is retracted by a second predetermined distance, a stepped dispensing space is formed between the support film 14 and the bonding region 121 as well as between the support film and the chip on film 50, and a sealant 70 covering at least a portion of the bonding region 121 and at least a portion of the chip on film 50 is disposed in the dispensing space, so as to seal a gap between the display panel body 12 and the chip on film 50 through the sealant 70, thereby preventing water vapor from entering between the display panel body 12 and the chip on film 50 and protecting electrical components on the chip on film 50.
Moreover, when the edge of the support film 14 opposite to the binding region 121 is retracted to reserve a dispensing space, and then the dispensing space is transferred and detected in a production line, the glue body 70 is not arranged in the dispensing space, and the binding region 121 protrudes out of the support film 14, so that the support film is easily damaged by collision. Therefore, in order to protect the display panel body 12, the orthographic projection of the display panel body 12 facing the protective film 30 and the part of the protective film 30 are overlapped, and the other part of the protective film 30 is displaced from the display panel body 12 and protrudes relative to the side wall of the display panel body 12, so as to resist the impact of the components on the production line from the side surface and protect the display panel body 12. Specifically, in the present embodiment, the protection film 30 protrudes at least relative to the side wall of the bonding region 121, so as to prevent the bonding region 121 from being impacted during the transportation process due to protruding from the support film 14, and protect the display panel body 12.
In any of the above embodiments, the protection film 30 is detachably disposed on the support film 14, so that the protection film 30 is removed during the subsequent processes of dispensing and assembling the display module 100, and the protection film 30 does not affect the normal processing of the display module 100.
Specifically, the display module 100 further includes an adhesive layer having a variable viscosity in response to environmental adjustment of an environment where the adhesive layer is located, and the viscosity of the adhesive layer can be reduced by changing the environment where the adhesive layer is located. The protective film 30 is attached to the support film 14 through the adhesive layer, and when the protective film 30 needs to be torn off, the adhesive layer can reduce the viscosity by changing the environment where the adhesive layer is located, so that the protective film 30 can be easily torn off without damaging the support film 14. Alternatively, the adhesive layer is a UV-vis-breaking layer, which reduces viscosity and even fails after exposure to UV light (UV light). It is understood that the adhesive layer may be made of other materials, and the viscosity can be controlled to decrease, which is not limited herein.
In the embodiment, the protection film 30 is made of PET (polyethylene terephthalate), has good mechanical properties, has 3 to 5 times of impact strength as compared with other films, and can bear impact with larger strength so as to reliably protect the display panel body 12. Meanwhile, the protective film 30 made of PET may allow UV light to pass therethrough to fail the adhesive bond line between the protective film 30 and the support film 14. Alternatively, the protective film 30 is made of PI (polyimide), has excellent mechanical properties, can withstand impacts of greater intensity, and can allow UV light to pass through, so that the adhesive layer between the protective film 30 and the support film 14 fails.
In an embodiment of the present invention, a method for manufacturing a display module 100 is further provided, including the following steps:
in step S100, a support film 14 is provided.
Step S300, attaching the protection film 30 to one side of the support film 14, and attaching the display panel body 12 to one side of the support film 14 opposite to the protection film 30;
the orthographic projection of the display panel body 12 and the support film 14 towards the protection film 30 and the part of the protection film 30 are mutually overlapped, namely, the other part of the protection film 30 is not overlapped with the display panel body 12 and the support film 14, and the protection film 30 at least partially protrudes out of the display panel body 12 in the direction parallel to the display panel body 12.
After the display panel body 12 is manufactured, the display panel body 12 is attached to the side of the support film 14 opposite to the protection film 30, and the display panel body 12 is supported by the support film 14. Meanwhile, in the direction parallel to the display panel body 12, a part of the protection film 30 protrudes out of the display panel body 12, and can contact with external components in the transferring process to bear the impact of the external components, so that the display panel body 12 on the support film 14 is kept away from the external components, the display panel body 12 is prevented from being impacted by the external components, especially the impact on the side surface of the display panel body 12, and the display panel body 12 is prevented from being damaged in the production process of the display module 100.
Specifically, the protective film 30 is attached to the support film 14 by an adhesive layer whose adhesiveness is variable in response to a change in environmental conditions of the environment, such as UV-decreasing adhesive.
In step S500, the supporting film 14 and the display panel body 12 are carried by the protective film 30 and transported to a dispensing station.
After the display panel body 12 is manufactured, the display panel body 12 is attached to the side of the support film 14 opposite to the protection film 30, and the display panel body 12 is supported by the support film 14. Meanwhile, the protective film 30 is longer in the direction parallel to the support film 14, and can contact with external components first in the transfer process to bear the impact of the external components, so that the display panel body 12 on the support film 14 is kept away from the external components, the display panel body 12 is prevented from being impacted by the external components, especially the impact on the side surface of the display panel body 12, and the display panel body 12 is prevented from being damaged in the production process of the display module 100.
In step S700, the protective film 30 is removed, and the gap between the display panel body 12 and the flip-chip film 50 is sealed by the sealant 70. When the gap between the display panel body 12 and the flip-chip film 50 is sealed by dispensing, dispensing is performed from the side of the support film 14 opposite to the display panel body 12 to the boundary between the display panel body 12 and the flip-chip film 50, so that the dispensing process can be performed after the protective film 30 disposed on the side of the support film 14 opposite to the display panel body 12 is torn off.
Specifically, the adhesive protective film 30 is removed after the adhesive layer is lowered in viscosity by changing the environmental conditions under which the adhesive layer is placed. For example, the protective film 30 attached by the UV-ray-reducing adhesive is irradiated with UV light (ultraviolet rays) to reduce the viscosity of the UV-ray-reducing adhesive, and even after the viscosity is lost, the protective film 30 can be easily removed without damaging the support film 14 during the removal.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A display module is characterized by comprising a display panel body, a support film and a protective film;
the protective film is arranged on one side of the support film, and the display panel body is attached to one side, away from the protective film, of the support film;
an orthographic projection of the display panel body and the support film toward the protective film overlaps with a portion of the protective film.
2. The display module assembly according to claim 1, wherein the orthographic projection of the display panel body towards the protective film falls within the range of the orthographic projection of the support film towards the protective film;
preferably, an orthographic projection of the display panel body towards the protective film completely overlaps with an orthographic projection of the support film towards the protective film.
3. The display module according to claim 1 or 2, wherein an orthographic projection of the display panel body and the support film toward the protective film completely falls within a range of the protective film.
4. The display module of claim 3, wherein the edge of the support film is spaced a first predetermined distance from the edge of the protection film.
5. The display module according to any one of claims 1-4, further comprising a flip-chip film, wherein the display panel body has a bonding area;
the binding end of the chip on film is connected to one surface of the binding area, which faces away from the support film, and the support film is retracted by a second preset distance relative to the edge of the binding area.
6. A display module, comprising:
the flexible display panel comprises a support film and a display panel body arranged on one side of the support film; and
a protective film attached to a side of the support film facing away from the display panel body;
an orthographic projection of the flexible display panel and the support film toward the protective film overlaps with a portion of the protective film.
7. The display module of claim 6, wherein the orthographic projection of the flexible display panel towards the protective film falls into the orthographic projection of the support film towards the protective film.
8. The display module according to any one of claims 1 to 7, wherein the protective film is removably disposed on the support film.
9. The display module of claim 8, further comprising an adhesive layer having a variable viscosity in response to a change in an environmental condition of an environment in which the display module is disposed;
the protective film is attached to the support film through the adhesive layer.
10. A manufacturing method of a display module is characterized by comprising the following steps:
providing a support film;
attaching a protective film on one side of a support film, and attaching a display panel body to one side, opposite to the protective film, of the support film;
wherein an orthographic projection of the display panel body and the support film toward the protective film and a portion of the protective film overlap each other.
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| CN201911181623.2A CN110930880A (en) | 2019-11-27 | 2019-11-27 | Display module and manufacturing method thereof |
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| CN201911181623.2A CN110930880A (en) | 2019-11-27 | 2019-11-27 | Display module and manufacturing method thereof |
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| CN111415592A (en) * | 2020-04-29 | 2020-07-14 | 京东方科技集团股份有限公司 | Back film for laminating flexible display panel, display device and laminating method |
| CN111477099A (en) * | 2020-04-20 | 2020-07-31 | 京东方科技集团股份有限公司 | Display module and display device |
| CN111605282A (en) * | 2020-05-29 | 2020-09-01 | 昆山国显光电有限公司 | Flexible display panel attaching method and primary assembly |
| CN111755389A (en) * | 2020-06-29 | 2020-10-09 | 无锡睿勤科技有限公司 | Chip on film assembly |
| CN112164312A (en) * | 2020-09-28 | 2021-01-01 | 湖北长江新型显示产业创新中心有限公司 | Sliding scroll display device |
| CN112216214A (en) * | 2020-10-23 | 2021-01-12 | 昆山工研院新型平板显示技术中心有限公司 | Display panel manufacturing method |
| CN112270890A (en) * | 2020-10-27 | 2021-01-26 | 合肥维信诺科技有限公司 | Flexible display panel and flexible display device |
| WO2024082513A1 (en) * | 2022-10-20 | 2024-04-25 | 广州国显科技有限公司 | Display module, manufacturing method, and display device |
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