CN113707030A - Flexible display module and display terminal - Google Patents
Flexible display module and display terminal Download PDFInfo
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- CN113707030A CN113707030A CN202111056161.9A CN202111056161A CN113707030A CN 113707030 A CN113707030 A CN 113707030A CN 202111056161 A CN202111056161 A CN 202111056161A CN 113707030 A CN113707030 A CN 113707030A
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- 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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Abstract
The application provides a flexible display module and a display terminal; this flexible display module assembly includes: the flexible display panel comprises a first plane part, a second plane part and a bending part, wherein the first plane part comprises a display part and a first terminal part, an optical functional layer is arranged on the flexible display panel, the orthographic projection of the display part on the optical functional layer is positioned in the optical functional layer, a protective layer is arranged on the bending part and extends towards the first terminal part, and the distance between the protective layer and the optical functional layer is smaller than or equal to a first threshold value in the direction from the display part to the first terminal part; the protective layer is arranged on the bending portion and extends towards the first terminal portion to reduce the distance between the protective layer and the optical function layer, and meanwhile the area of the protective layer covering the first terminal portion is increased, so that the risk of line fracture on the first terminal portion is reduced, and the product yield is improved.
Description
Technical Field
The application relates to the field of flexible display screens, in particular to a flexible display module and a display terminal.
Background
Flexible products are a development trend of current small and medium-sized panels, wherein a binding end Bending (Pad Bending) technology has gradually become a mainstream Bending technology in a display panel because the width of a frame of the display panel can be significantly reduced.
At present, in the bending design of a flexible product, a terminal circuit bound in a terminal area is easy to generate a circuit fracture problem due to the pulling action force in the folding process, and a larger risk of the terminal area circuit fracture exists.
Disclosure of Invention
The application provides a flexible display module and display terminal to there is great technical problem of hindering the risk in the terminal area circuit of improving current flexible product.
In order to solve the technical problem, the technical scheme provided by the application is as follows:
the application provides a flexible display module assembly, include:
the flexible display panel comprises a first plane part, a second plane part and a bending part arranged between the first plane part and the second plane part, wherein the second plane part is bent to one side departing from the light emitting direction of the first plane part, and the first plane part comprises a display part and a first terminal part arranged between the display part and the bending part;
the optical function layer is arranged on the flexible display panel, and the orthographic projection of the display part on the optical function layer is positioned in the optical function layer; and the number of the first and second groups,
a protection layer disposed on the bending portion and extending toward the first terminal portion;
wherein a distance between the protective layer and the optical function layer in a direction from the display section to the first terminal section is less than or equal to a first threshold value.
In the flexible display module of this application, on the top view direction of flexible display module, the display part with the coincidence of optical function layer.
In the flexible display module of the present application, in a top view direction of the flexible display module, the area of the protective layer extending onto the first terminal portion exceeds half of the area of the first terminal portion.
In the flexible display module of the present application, the first threshold is 150 micrometers.
In the flexible display module of this application, the second plane portion includes the second terminal part, the protective layer extends to on the second terminal part.
In the flexible display module of the present application, the protection layer includes a second protection segment located on the bending portion, a first protection segment extending to the first terminal portion, and a third protection segment extending to the second terminal portion;
wherein the area of the first protection section is larger than the area of the third protection section.
In the flexible display module of the present application, an area of the third protection segment is less than or equal to half of an area of the second terminal portion.
In the flexible display module, the optical function layer comprises a polaroid arranged on the display part, an optical adhesive layer arranged on the polaroid and a flexible cover plate arranged on the optical adhesive layer;
the flexible cover plate protrudes out of the optical adhesive layer and the polarizer in the direction from the display part to the first terminal part; and the number of the first and second groups,
in the light emitting direction of the first plane part, the thickness of the first protection section is equal to the sum of the thicknesses of the polarizer and the optical cement.
In the flexible display module, the optical function layer comprises a polaroid arranged on the display part, an optical adhesive layer arranged on the polaroid and a flexible cover plate arranged on the optical adhesive layer;
the flexible cover plate protrudes out of the optical adhesive layer and the polarizer in the direction from the display part to the first terminal part; and the number of the first and second groups,
a cushion layer is arranged between the first terminal part and the flexible cover plate.
The application also provides a display terminal, including terminal main part and above-mentioned flexible display module assembly, flexible display module assembly with terminal main part combination is as an organic whole.
Has the advantages that: the protective layer is arranged on the bent part and extends towards the first terminal part, so that the protective layer can protect not only the terminal circuit on the bent part, but also the connection part between the first terminal part and the bent part; in addition, the distance between the protective layer and the optical function layer is smaller than the first threshold, so that the distance between the protective layer and the optical function layer can be reduced, the area of the first terminal part covered by the protective layer is increased, and the area, which is not covered by the protective layer, on the first terminal part is far away from the bending part, thereby reducing the risk of line fracture on the first terminal part and improving the product yield.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of a first tiled structure of a flexible display module according to the present application;
fig. 2 is a schematic diagram of a second tiled structure of a flexible display module according to the present application;
FIG. 3 is a schematic diagram of the relative positions of the protective layer and the flexible display panel in FIG. 2;
FIG. 4 is a schematic view of a bending structure of the flexible display module according to the present application;
fig. 5 is a schematic diagram of a third tiled structure of a flexible display module according to the present application;
fig. 6 is a schematic diagram of a fourth tiled structure of the flexible display module according to the present application.
Description of reference numerals:
the flexible display module 100, the flexible display panel 200, the first planar portion 210, the display portion 211, the first terminal portion 212, the second planar portion 220, the second terminal portion 221, the bending portion 230, the optical function layer 300, the polarizer 310, the optical adhesive layer 320, the flexible cover 330, the protection layer 400, the first protection section 410, the second protection section 420, the third protection section 430, the cushion layer 500, the back plate layer 600, the first back plate portion 610, and the second back plate portion 620.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.
At present, in the Pad bonding design of a flexible product, a terminal circuit bound in a terminal area is easy to generate a circuit fracture problem due to a pulling action force in a folding process, and a larger risk of fracture of the terminal area circuit exists. The present application proposes the following solutions based on the above technical problems.
Referring to fig. 1 to 6, the present application provides a flexible display module, including:
a flexible display panel 200, including a first planar portion 210, a second planar portion 220, and a bending portion 230 disposed between the first planar portion 210 and the second planar portion 220, wherein the second planar portion 220 is bent toward a side away from a light emitting direction of the first planar portion 210, and the first planar portion 210 includes a display portion 211 and a first terminal portion 212 disposed between the display portion 211 and the bending portion 230;
an optical function layer 300 disposed on the flexible display panel 200, wherein an orthographic projection of the display portion 211 on the optical function layer 300 is located in the optical function layer 300; and the number of the first and second groups,
a passivation layer 400 disposed on the bending portion 230 and extending toward the first terminal portion 212;
wherein a distance d1 between the protective layer 400 and the optically functional layer 300 in a direction from the display portion 211 to the first terminal portion 212 is less than or equal to a first threshold value.
In the present invention, by providing the protection layer 400 on the bent portion 230 and extending the protection layer 400 toward the first terminal portion 212, the protection layer 400 can protect not only the terminal lines on the bent portion 230 but also the connection portion between the first terminal portion 212 and the bent portion 230; in addition, by making the distance d1 between the protection layer 400 and the optical function layer 300 smaller than the first threshold, the distance between the protection layer 400 and the optical function layer 300 can be reduced, and the area of the first terminal portion 212 covered by the protection layer 400 is increased, and the area of the first terminal portion 212 not covered by the protection layer 400 is away from the bending portion 230, so that the risk of breaking the circuit on the first terminal portion 212 is reduced, and the yield of the product is improved.
In this embodiment, the flexible display panel 200 may be one of an OLED display panel, a Mini-LED display panel, or a Micro-LED display panel.
In this embodiment, the protection layer 400 may be made of UV glue.
The technical solution of the present application will now be described with reference to specific embodiments. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.
Referring to fig. 1, fig. 1 is a schematic diagram of a first tiled structure of the flexible display module 100 according to the present application, in the flexible display module according to the present application, in a top view direction of the flexible display module 100, the display portion 211 coincides with the optical function layer 300. That is, in the present embodiment, the edge of the optically functional layer 300 is flush with the boundary line between the display portion 211 and the first terminal portion 212.
Through the above arrangement, the problem that the UV glue cannot cover the circuit of the protection terminal area due to the fact that the optical function layer 300 covers part of the terminal area in the conventional display module can be solved, so that the UV glue serving as the protection layer 400 can further extend to one side of the display portion 211 onto the first terminal portion 212, thereby providing a protection effect for the circuit on the first terminal portion 212. In addition, the above configuration can make the area of the first terminal portion 212 not covered by the protection layer 400 away from the bending portion 230, thereby reducing the risk of wire breakage on the first terminal portion 212 during Pad bonding and improving the product yield.
Referring to fig. 1, in the flexible display module of the present application, in a top view direction of the flexible display module 100, an area of the protection layer 400 extending to the first terminal portion 212 exceeds half of an area of the first terminal portion 212.
In the present embodiment, in the direction from the bending portion 230 to the first terminal portion 212, the minimum width of the protection layer 400 extending to the first terminal portion 212 is greater than half of the width of the first terminal portion 212.
With the above arrangement, the protection layer 400 can cover most of the area of the first terminal portion 212, so as to provide a more stable and reliable protection effect for the circuit on the first terminal portion 212, and further reduce the problem of breaking the circuit on the first terminal portion 212.
Referring to fig. 1, in the flexible display module of the present application, the first threshold is 150 micrometers, that is, in a direction from the display portion 211 to the first terminal portion 212, a distance between the protection layer 400 and the optical function layer 300 is smaller than or equal to 150 micrometers, so that the distance between the protection layer 400 and the optical function layer 300 is small enough, and an area of the protection layer 400 covering the first terminal portion 212 is large enough to better protect the circuit of the terminal area.
It should be noted that, in this embodiment, when the flexible display module 100 is applied to a dynamic folding product, the distance between the protective layer 400 and the optical function layer 300 may be zero, that is, the protective layer 400 may extend to be connected to the optical function layer 300, so as to improve the durability of the protective layer 400 and achieve multiple bending.
Referring to fig. 2, fig. 2 is a schematic diagram of a second flat structure of the flexible display module 100 according to the present application, in the flexible display module according to the present application, the second flat portion 220 includes a second terminal portion 221, and the protective layer 400 extends to the second terminal portion 221. In this embodiment, the arrangement of the traces on the second terminal portion 221 corresponds to the arrangement of the traces on the first terminal portion 212, and the traces on the first terminal portion 212 extend to the second terminal portion 221 through the folded portion. In this embodiment, the protection layer 400 is extended onto the second terminal portion 221, so that a good protection effect can be provided for the terminal circuit bent to the side of the first plane portion 210 away from the light emitting direction, and the risk of breaking the circuit in the terminal area is further reduced.
Referring to fig. 3, fig. 3 is a schematic diagram illustrating a relative position of the passivation layer 400 and the flexible display panel 200 in fig. 2, in the flexible display module of the present application, the passivation layer 400 includes a second protection segment 420 located on the bending portion 230, a first protection segment 410 extending to the first terminal portion 212, and a third protection segment 430 extending to the second terminal portion 221, and an area of the first protection segment 410 is larger than an area of the third protection segment 430.
Since the stress at the junction of the first terminal portion 212 and the bending portion 230 is the largest and the stress at the junction of the second terminal portion 221 and the bending portion 230 is the second when the terminal area of the flexible display panel 200 is bent, the first protection segment 410, the second protection segment 420 and the third protection segment 430 are disposed to achieve a good protection effect for two positions with larger stress. Moreover, the first protection segment 410 with a larger area can bear a larger bending stress, so as to be more suitable for the interface position between the first terminal portion 212 and the bending portion 230.
Referring to fig. 3, in the flexible display module of the present application, an area of the third protection segment 430 is less than or equal to half of an area of the second terminal portion 221. In the present embodiment, in the direction from the bending portion 230 to the second terminal portion 221, the maximum width of the protection layer 400 extending to the second terminal portion 221 is less than or equal to half of the width of the first terminal portion 212.
In this embodiment, by the above arrangement, a sufficient area is reserved on a side of the second terminal portion 221 away from the bending portion 230, so that an electrical device (not shown) for signal transmission, such as a flexible printed circuit board, a driving chip, and the like, can be connected to the second terminal portion 221, thereby achieving a good and stable signal transmission function on the second terminal portion 221.
Referring to fig. 4, fig. 4 is a schematic view of a bending structure of the flexible display module 100 according to the present application, in the flexible display module according to the present application, the flexible display module 100 further includes a back plate layer 600 disposed on a side of the flexible display panel 200 away from a light emitting direction, the back plate layer 600 includes a first back plate portion 610 and a second back plate portion 620, the first back plate portion 610 corresponds to the first plane portion 210, and the second back plate portion 620 corresponds to the second plane portion 220. The first back plate portion 610 and the second back plate portion 620 support the first plane portion 210 and the second plane portion 220, respectively.
In this embodiment, the first back plate portion 610 and the second back plate portion 620 are disposed at an interval, and the interval between the first back plate portion 610 and the second back plate portion 620 corresponds to the bending portion 230, so as to reduce the bending resistance of the bending portion 230 during bending.
In this embodiment, the first back plate portion 610 and the second back plate portion 620 may extend into the region corresponding to the bending portion 230, so that the boundary between the first terminal portion 212 and the bending portion 230 and the boundary between the second terminal portion 221 and the bending portion 230 are both located on the back plate layer 600, thereby providing a good supporting effect and a structure reinforcing effect for the boundary positions with large bending stress, and further reducing the risk of breaking the lines in the terminal area.
Referring to fig. 5, fig. 5 is a schematic diagram of a third tiled structure of the flexible display module 100 according to the present application, in which the optical function layer 300 includes a polarizer 310 disposed on the display portion 211, an optical adhesive layer 320 disposed on the polarizer 310, and a flexible cover 330 disposed on the optical adhesive layer 320. In this embodiment, in a direction from the display portion 211 to the first terminal portion 212, the flexible cover 330 protrudes from the optical adhesive layer 320 and the polarizer 310, so that the flexible cover 330 can shield and protect the first terminal portion 212.
In this embodiment, in the light emitting direction of the first plane portion 210, the thickness of the first protection section 410 is equal to the sum of the thicknesses of the polarizer 310 and the optical adhesive. That is, in the light emitting direction of the first plane portion 210, the thickness of the first protection section 410 is equal to the distance from the flexible cover plate 330 to the first terminal portion 212, so that the first protection section 410 not only covers and protects the first terminal portion 212, but also plays a certain role in buffering and protecting, thereby further improving the protection effect of the protection layer 400.
Referring to fig. 6, fig. 6 is a schematic diagram of a fourth tiled structure of the flexible display module 100 according to the present application, in which a buffer layer 500 is disposed between the first terminal portion 212 and the flexible cover plate 330. In this embodiment, the cushion layer 500 is disposed between the first terminal portion 212 and the flexible cover 330, so that the cushion layer 500 can provide a good buffering protection effect for the first terminal portion 212, and when a user presses a portion of the flexible cover 330 corresponding to the first terminal portion 212, the cushion layer 500 can effectively prevent or reduce a problem of a circuit breaking on the first terminal portion 212.
In this embodiment, the cushion layer 500 may be made of a foam rubber material, an elastic plastic material or a UV rubber material, as long as it has a certain function of buffering deformation.
In this embodiment, when the cushion layer 500 is made of a UV glue material, the cushion layer 500 may be integrally formed with the protection layer 400, so that the cushion layer 500 and the protection layer 400 form a whole, and the protection effect is further improved.
In this embodiment, in the light emitting direction of the first plane portion 210, the thickness of the cushion layer 500 may be equal to the distance between the flexible cover 330 and the first terminal portion 212, or the thickness of the cushion layer 500 may be slightly larger than the distance between the flexible cover 330 and the first terminal portion 212. Therefore, the buffer layer can fully fill the space between the flexible cover plate 330 and the first terminal part 212 to form a solid buffer structure, which has a better buffer protection effect on the first terminal part 212.
Referring to fig. 6, in the flexible display module of the present application, the cushion layer 500 may be disposed on a region of the first terminal portion 212 not covered by the first protection segment 410, so that the cushion layer 500 and the first protection segment 410 jointly play a role in buffering and protecting the first terminal portion 212.
In this embodiment, in the light exiting direction of the first plane portion 210, the thickness of the cushion layer 500 and the thickness of the first protection segment 410 may be equal to the sum of the thicknesses of the polarizer 310 and the optical adhesive layer 320, and equal to the distance between the flexible cover 330 and the first terminal portion 212.
The embodiment of the application further provides a display terminal, which comprises a terminal main body and the flexible display module 100, wherein the flexible display module 100 is combined with the terminal main body into a whole. In this embodiment, the terminal main body may include an intelligent electronic device such as a mobile phone, a notebook computer, a tablet, a television, and a watch.
In the present invention, by providing the protection layer 400 on the bent portion 230 and extending the protection layer 400 toward the first terminal portion 212, the protection layer 400 can protect not only the terminal lines on the bent portion 230 but also the connection portion between the first terminal portion 212 and the bent portion 230; in addition, by making the distance d1 between the protection layer 400 and the optical function layer 300 smaller than the first threshold, the distance between the protection layer 400 and the optical function layer 300 can be reduced, and the area of the first terminal portion 212 covered by the protection layer 400 is increased, and the area of the first terminal portion 212 not covered by the protection layer 400 is away from the bending portion 230, so that the risk of breaking the circuit on the first terminal portion 212 is reduced, and the yield of the product is improved.
The flexible display module and the display terminal provided by the embodiment of the application are described in detail, a specific example is applied in the description to explain the principle and the implementation of the application, and the description of the embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. The utility model provides a flexible display module assembly which characterized in that includes:
the flexible display panel comprises a first plane part, a second plane part and a bending part arranged between the first plane part and the second plane part, wherein the second plane part is bent to one side departing from the light emitting direction of the first plane part, and the first plane part comprises a display part and a first terminal part arranged between the display part and the bending part;
the optical function layer is arranged on the flexible display panel, and the orthographic projection of the display part on the optical function layer is positioned in the optical function layer; and the number of the first and second groups,
a protection layer disposed on the bending portion and extending toward the first terminal portion;
wherein a distance between the protective layer and the optical function layer in a direction from the display section to the first terminal section is less than or equal to a first threshold value.
2. The flexible display module of claim 1, wherein the display portion coincides with the optically functional layer in a top view of the flexible display module.
3. The flexible display module of claim 1, wherein the protective layer extends over more than half of an area of the first terminal portion in a top view direction of the flexible display module.
4. The flexible display module of claim 3, wherein the first threshold is 150 microns.
5. The flexible display module of claim 4, wherein the second planar portion comprises a second terminal portion, and the protective layer extends onto the second terminal portion.
6. The flexible display module according to claim 5, wherein the protection layer comprises a second protection segment located on the bending portion, a first protection segment extending to the first terminal portion, and a third protection segment extending to the second terminal portion;
wherein the area of the first protection section is larger than the area of the third protection section.
7. The flexible display module of claim 6, wherein the area of the third protection segment is less than or equal to half of the area of the second terminal portion.
8. The flexible display module according to claim 6, wherein the optically functional layer comprises a polarizer disposed on the display portion, an optical adhesive layer disposed on the polarizer, and a flexible cover disposed on the optical adhesive layer;
the flexible cover plate protrudes out of the optical adhesive layer and the polarizer in the direction from the display part to the first terminal part; and the number of the first and second groups,
in the light emitting direction of the first plane part, the thickness of the first protection section is equal to the sum of the thicknesses of the polarizer and the optical cement.
9. The flexible display module according to claim 6 or 8, wherein the optical function layer comprises a polarizer disposed on the display portion, an optical adhesive layer disposed on the polarizer, and a flexible cover plate disposed on the optical adhesive layer;
the flexible cover plate protrudes out of the optical adhesive layer and the polarizer in the direction from the display part to the first terminal part; and the number of the first and second groups,
a cushion layer is arranged between the first terminal part and the flexible cover plate.
10. A display terminal, comprising a terminal body and the flexible display module according to any one of claims 1 to 9, wherein the flexible display module is integrated with the terminal body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111056161.9A CN113707030A (en) | 2021-09-09 | 2021-09-09 | Flexible display module and display terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111056161.9A CN113707030A (en) | 2021-09-09 | 2021-09-09 | Flexible display module and display terminal |
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| WO2023103033A1 (en) * | 2021-12-09 | 2023-06-15 | 武汉华星光电半导体显示技术有限公司 | Display module and mobile terminal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023103033A1 (en) * | 2021-12-09 | 2023-06-15 | 武汉华星光电半导体显示技术有限公司 | Display module and mobile terminal |
| CN114446174A (en) * | 2022-02-11 | 2022-05-06 | 武汉华星光电半导体显示技术有限公司 | Display panel and mobile terminal |
| CN114446174B (en) * | 2022-02-11 | 2024-03-15 | 武汉华星光电半导体显示技术有限公司 | Display panel and mobile terminal |
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Application publication date: 20211126 |