CN114067683B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN114067683B CN114067683B CN202111210495.7A CN202111210495A CN114067683B CN 114067683 B CN114067683 B CN 114067683B CN 202111210495 A CN202111210495 A CN 202111210495A CN 114067683 B CN114067683 B CN 114067683B
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- circuit board
- printed circuit
- flexible printed
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- flexible
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- 239000006185 dispersion Substances 0.000 claims abstract description 42
- 239000010410 layer Substances 0.000 claims description 148
- 239000011241 protective layer Substances 0.000 claims description 24
- 239000000758 substrate Substances 0.000 claims description 22
- 230000002093 peripheral effect Effects 0.000 claims description 19
- 230000000694 effects Effects 0.000 abstract description 8
- 239000003292 glue Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2380/00—Specific applications
- G09G2380/02—Flexible displays
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application relates to the technical field of display panels, in particular to a display panel and a display device, wherein the display panel comprises a flexible screen body, a touch layer, a first flexible printed circuit board, a second flexible printed circuit board, a connecting piece and a pressure dispersion layer, the touch layer is arranged on one side of a light emitting surface of the flexible screen body, the first flexible printed circuit board is bound with the flexible screen body, and one end of the second flexible printed circuit board is bound with the touch layer; the connecting piece is positioned at one side of the backlight surface of the flexible screen body and is used for electrically connecting the first flexible printed circuit board and the second flexible printed circuit board; the pressure dispersion layer is positioned in a pressure conduction path between the connecting piece and the flexible screen body and is used for reducing the pressure of the connecting piece to the flexible screen body. The display panel can improve the top printing condition of the flexible screen body at the position near the connecting piece and improve the display effect of the display panel.
Description
Technical Field
The present application relates to the field of display panels, and in particular, to a display panel and a display device.
Background
The flexible display panel has the advantages of small size, light weight, flexibility and portability, and meanwhile, the power consumption is lower than that of the traditional hard screen display panel, so that the cruising ability of equipment is improved, and the flexible display panel is more and more widely applied to various fields. However, due to the light, thin and flexible characteristics of the screen, when the screen is assembled inside the product, the hardware attached to the flexible screen body easily causes the flexible screen to generate top printing, and the display effect is affected.
Disclosure of Invention
In view of the above, the present application mainly solves the technical problem of providing a display panel and a display device, so as to improve the phenomenon of top printing generated by a flexible screen body, thereby improving the display effect.
In order to solve the technical problems, the application adopts a technical scheme that: a display panel comprises a flexible screen body, a touch layer, a first flexible printed circuit board, a second flexible printed circuit board, a connecting piece and a pressure dispersing layer, wherein the touch layer is arranged on one side of a light emitting surface of the flexible screen body, the first flexible printed circuit board is bound with the flexible screen body, and one end of the second flexible printed circuit board is bound with the touch layer; the connecting piece is positioned at one side of the backlight surface of the flexible screen body and is used for electrically connecting the first flexible printed circuit board and the second flexible printed circuit board; the pressure dispersion layer is positioned in a pressure conduction path between the connecting piece and the flexible screen body and is used for reducing the pressure of the connecting piece to the flexible screen body.
The pressure dispersing layer is arranged on the outer peripheral side of the contact area between the connecting piece and the first flexible printed circuit board or the second flexible printed circuit board, and is at least connected with the outer peripheral side of the connecting piece.
Wherein the pressure dispersion layer is disposed around the connection member and connects the first flexible printed circuit board or the second flexible printed circuit board adjacent to the connection member.
Wherein a portion of the pressure dispersing layer is located between the connection member and the first flexible printed circuit board, or a portion of the pressure dispersing layer is located between the connection member and the second flexible printed circuit board.
Wherein a portion of the pressure dispersion layer is connected to the first flexible printed circuit board or the second flexible printed circuit board.
The pressure dispersing layer is positioned between the connecting piece and the flexible screen body, and the area of the pressure dispersing layer is larger than the area of the contact area between the connecting piece and the first flexible printed circuit board or the second flexible printed circuit board.
Wherein the first flexible printed circuit board or/and the second flexible printed circuit board is/are positioned between the connecting piece and the flexible screen body; the pressure dispersion layer is arranged in the first flexible printed circuit board or/and the second flexible printed circuit board, and the orthographic projection of the pressure dispersion layer on the flexible screen body at least covers the orthographic projection of the connecting piece on the flexible screen body.
Wherein the first flexible printed circuit board comprises a first substrate layer and a first protective layer, and the second flexible printed circuit board comprises a second substrate layer and a second protective layer
The pressure dispersion layer is arranged between the first substrate layer and the first protective layer, or/and the pressure dispersion layer is arranged at one side of the first protective layer, which is away from the first substrate layer;
or/and, the pressure dispersion layer is arranged between the second substrate layer and the second protection layer, or/and, the pressure dispersion layer is arranged on one side of the second protection layer away from the second substrate layer.
Wherein the structure of the pressure dispersion layer comprises a honeycomb layered structure.
The first flexible printed circuit board and the second flexible printed circuit board are positioned at two opposite ends or two adjacent sides of the flexible screen body.
The application also comprises a second technical scheme, a display device comprises a driving circuit board and the display panel, wherein the display panel comprises a first flexible printed circuit board and a second flexible printed circuit board; the driving circuit board is bound with the first flexible printed circuit board or the second flexible printed circuit board and is used for driving the display panel.
The beneficial effects of the application are as follows: the display panel is different from the display panel in the embodiment of the application in the prior art, the pressure of the connecting piece to the flexible screen body is reduced by arranging the pressure dispersing layer in the pressure conduction path between the connecting piece and the flexible screen body, the stress generated by the flexible screen body is dispersed, the top printing condition of the flexible screen body at the position near the connecting piece is improved, and the display effect of the display panel is further improved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a display panel;
FIG. 2 is a schematic view of the state of FIG. 1;
FIG. 3 is a schematic cross-sectional view of a first embodiment of a display panel according to the present application;
FIG. 4 is a schematic view of the state of FIG. 3;
FIG. 5 is a schematic top view of FIG. 3;
FIG. 6 is a schematic cross-sectional view of a second embodiment of the display panel of the present application;
FIG. 7 is a schematic cross-sectional view of a third embodiment of a display panel according to the present application;
FIG. 8 is a schematic cross-sectional view of a fourth embodiment of a display panel according to the present application;
FIG. 9 is a schematic plan view of an embodiment of a pressure dispersing layer of the present application;
fig. 10a to 10d are schematic views showing an assembly process of the display panel according to the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.
As shown in fig. 3 and 4, the embodiment of the application provides a display panel, which comprises a flexible screen body 10, a touch layer 20, a first flexible printed circuit board 30, a second flexible printed circuit board 40, a connecting piece 50 and a pressure dispersing layer 60, wherein the touch layer 20 is arranged on one side of the light emitting surface of the flexible screen body 10, the first flexible printed circuit board 30 is bound with the flexible screen body 10, and one end of the second flexible printed circuit board 40 is bound with the touch layer 20; the connecting piece 50 is located at the backlight surface side of the flexible screen body 10, and the connecting piece 50 is used for electrically connecting the first flexible printed circuit board 30 and the second flexible printed circuit board 40; the pressure dispersion layer 60 is located in the pressure conduction path between the connection member 50 and the flexible screen 10 for reducing the pressure of the connection member 50 against the flexible screen 10.
As shown in fig. 1, the connection member 50 in the display panel is hardware, when the first flexible printed circuit board 30 and the second flexible printed circuit board 40 are connected, the connection member 50 is located on the backlight surface of the flexible screen body 10, as shown in fig. 2, the connection member 50 receives a pressure force when being perpendicular to the backlight surface of the flexible screen body 10, so that the first flexible printed circuit board 30 and the second flexible printed circuit board 40 are electrically connected, and the pressure causes the flexible screen body 10 to generate a top print near the position of the connection member 50, so that the flexible screen body 10 generates a print or bends, and the display of the flexible screen body 10 is affected. As shown in fig. 3 and 4, in the display panel according to the embodiment of the present application, the pressure of the connecting member 50 on the flexible screen 10 is reduced by providing the pressure dispersion layer 60 in the pressure conduction path between the connecting member 50 and the flexible screen 10, so as to disperse the stress generated by the flexible screen 10, and improve the top printing condition of the flexible screen 10 near the position of the connecting member 50, thereby improving the display effect of the display panel.
In the embodiment of the present application, the first flexible printed circuit board 30 and the second flexible printed circuit board 40 are electrically connected through the connection member 50, so that the flexible screen body 10 connected with the first flexible printed circuit board 30 and the touch layer 20 connected with the second flexible printed circuit board 40 are electrically connected to a driving circuit board (not shown) of the display device together, simplifying a connection circuit.
In the embodiment of the present application, the connection member 50 is located on the side of the first flexible printed circuit board 30 facing away from the flexible screen body 10, and in other embodiments, the connection member 50 may be located on the side of the second flexible printed circuit board 40 facing away from the flexible screen body 10.
In the embodiment of the present application, as further shown in fig. 3 and 4, the connector 50 includes a socket 51 and a press-fit cover 52, the socket 51 is electrically connected with one of the first flexible printed circuit board 30 or the second flexible printed circuit board 40, the socket 51 is used for accommodating the other of the first flexible printed circuit board 30 or the second flexible printed circuit board 40, and the socket 51 is electrically connected with the first flexible printed circuit board 30 and the second flexible printed circuit board 40; the pressing cover 52 is used to press the other of the first flexible printed circuit board 30 or the second flexible printed circuit board 40 to be electrically connected with the socket 51, and to contact-connect the first flexible printed circuit board 30 and the second flexible printed circuit board 40 through the socket 51.
In an embodiment of the present application, as shown in fig. 3, the bottom of the socket 51 is soldered to the first flexible printed circuit board 30, and the second flexible printed circuit board 40 is inserted into the socket 51, and as shown in fig. 4, by applying a force to the pressing cover 52, the pressing cover 52 presses the second flexible printed circuit board 40, so that the second flexible printed circuit board 40 is connected to the socket 51, and thus the first flexible printed circuit board 30 and the second flexible printed circuit board 40 are electrically connected. In other embodiments, the bottom of the socket 51 may also be soldered to the second flexible printed circuit board 40, and the first flexible printed circuit board 30 is inserted into the socket 51, and the pressing cover 52 applies a force to the pressing cover 52, so that the pressing cover 52 presses the first flexible printed circuit board 30, so that the first flexible printed circuit board 30 is connected to the socket 51, and further, the first flexible printed circuit board 30 is electrically connected to the second flexible printed circuit board 40.
In the embodiment of the present application, as shown in fig. 3 to 5, the pressure dispersing layer 60 is disposed at the outer peripheral side of the contact area between the connection member 50 and the first flexible printed circuit board 30 or the second flexible printed circuit board 40, and the pressure dispersing layer 60 is connected to at least the outer peripheral side of the connection member 50. In the embodiment of the present application, the pressure dispersing layer 60 is directly connected to the outer peripheral side of the connection member 50, and in other embodiments, the pressure dispersing layer 60 may be indirectly connected to the outer peripheral side of the connection member 50. In the embodiment of the application, the pressure dispersing layer 60 is disposed on the outer peripheral side of the connecting piece 50, so that the pressure dispersing layer 60 can increase the contact area between the connecting piece 50 and the first flexible printed circuit board 30 or the second flexible printed circuit board 40, so that the pressure dispersing layer 60 can disperse the pressure applied to the first flexible printed circuit board 30 by the connecting piece 50, thereby further dispersing the pressure applied to the flexible screen body 10 by the connecting piece 50, reducing the pressure applied to the flexible screen body 10 by the connecting piece 50, improving the condition that the flexible screen body 10 generates top printing, and achieving the effect of improving the display of the display panel. In the embodiment of the present application, the connection member 50 is in direct contact with the first flexible printed circuit board 30, that is, the bottom of the socket 51 is soldered with the first flexible printed circuit board 30, the pressure dispersing layer 60 is disposed on the outer peripheral side of the contact area between the connection member 50 and the first flexible printed circuit board 30, and the pressure dispersing layer 60 is connected to the outer peripheral side of the connection member 50. In other embodiments, the connection member 50 is in direct contact with the second flexible printed circuit board 40, i.e. the bottom of the socket 51 is soldered with the second flexible printed circuit board 40, the pressure dispersion layer 60 may be disposed on the outer peripheral side of the contact area between the connection member 50 and the second flexible printed circuit board 40, and the pressure dispersion layer 60 is connected to the outer peripheral side of the connection member 50.
In the embodiment of the present application, the pressure dispersion layer 60 is disposed around the connection member 50 and connects the first flexible printed circuit board 30 or the second flexible printed circuit board 40 adjacent to the connection member 50. In the embodiment of the application, the pressure dispersing layer 60 is disposed around the connection 50, so that the pressure dispersing layer 60 can greatly increase the stress area in the pressure conduction path between the connection piece 50 and the flexible screen body 10, which is beneficial to reducing the pressure of the connection piece 50 on the flexible screen body 10. Meanwhile, the pressure dispersing layer 60 is connected with the first flexible printed circuit board 30 or the second flexible printed circuit board 40, so that the pressure dispersing layer 60 is tightly contacted with the first flexible printed circuit board 30 or the second flexible printed circuit board 40, the stability of the pressure dispersing layer 60 acting on the flexible screen body 10 is improved, and the pressure of the connecting piece 50 on the flexible screen body 10 is reduced.
Specifically, in the embodiment of the present application, the material of the pressure dispersing layer 60 is a cured liquid colloid, in the embodiment of the present application, a method of dispensing glue is adopted at the periphery of the contact area between the connector 50 and the first flexible printed circuit board 30, so that the glue is dispersed at the periphery of the contact area between the connector 50 and the first flexible printed circuit board 30, that is, in the embodiment of the present application, the glue is dispersed at the periphery of the contact area between the socket 51 and the first flexible printed circuit board 30, after the glue is cured, the glue is connected with the peripheral side of the bottom of the connector 50, and the cured glue forms the pressure dispersing layer 60, so that the stress bearing area can be increased, and in the process of pressing the connector to press the cover 52, the stress of the flexible screen 10 is dispersed, thereby reducing the impact on the top seal of the flexible screen 10 after the stress concentration. In other embodiments, the pressure dispersing layer 60 formed by curing the liquid colloid made of other materials may be used as an example of the glue. In another embodiment, the socket 51 of the connector 50 is directly contacted with the second flexible printed circuit board 40, and a method of dispensing glue is adopted at the periphery of the contact area between the connector 50 and the second flexible printed circuit board 40, so that the glue is dispersed at the periphery of the contact area between the connector 50 and the second flexible printed circuit board 40, that is, the glue is dispersed at the periphery of the contact area between the socket 51 and the second flexible printed circuit board 40, after the glue is cured, the glue is connected with the periphery side of the bottom of the connector 50, and the cured glue forms the pressure dispersion layer 60.
In another embodiment of the present application, as shown in fig. 6, a part of the pressure dispersion layer 61 is provided on the outer peripheral side of the connection member 50 and the first flexible printed circuit board 30, and the part of the pressure dispersion layer 61 is connected to at least the outer peripheral side of the connection member 50; a portion of the pressure dispersing layer 62 is located between the connection member 50 and the first flexible printed circuit board 30. In the embodiment of the application, the pressure dispersing layer 60 is simultaneously disposed on the outer peripheral side of the connecting piece 50 and the bottom of the connecting piece 50, so that the contact area between the connecting piece 50 and the first flexible printed circuit board 30 can be increased, when the connecting piece 50 applies an acting force, the acting force of the connecting piece 50 on the first flexible printed circuit board 30 is dispersed by the pressure dispersing layer 60, and the acting force of the connecting piece 50 on the first flexible printed circuit board 30 can be reduced, so that the acting force of the connecting piece 50 on the flexible screen body 10 can be dispersed, and the top printing condition of the flexible screen body 10 can be improved. In still another embodiment, a part of the pressure dispersion layer 61 is provided on the outer peripheral sides of the connection member 50 and the second flexible printed circuit board 40, and the part of the pressure dispersion layer 61 is connected to at least the outer peripheral side of the connection member 50; a portion of the pressure dispersing layer 62 is located between the connection member 50 and the second flexible printed circuit board 40.
In the embodiment of the present application, a part of the pressure dispersion layer 62 is connected to the first flexible printed circuit board 30. In the embodiment of the present application, a part of the pressure dispersing layer 62 is connected with the first flexible printed circuit board 30, so that the pressure dispersing layer 60 is connected with the first flexible printed circuit board 30 and the connecting piece 50 at the same time, which can improve the contact tightness between the pressure dispersing layer 60 and the first flexible printed circuit board 30, and is helpful for the acting force acting on the connecting piece 50 to diffuse along the plane of the pressure dispersing layer 60. In other embodiments, when the socket 51 of the connector 50 is soldered to the second flexible printed circuit board 40, a portion of the pressure dispersion layer 62 may also be connected to the second flexible printed circuit board 40. In the embodiment of the present application, as shown in fig. 6, the connecting piece 50 is welded with the first flexible printed circuit board 30, and a welding liquid 70 exists between the socket 51 and the bottom of the first flexible printed circuit board 30; in the embodiment of the present application, the method of dispensing glue is still adopted, so that the glue is dispersed at the periphery of the contact area between the connecting piece 50 and the first flexible printed circuit board 30 or the second flexible printed circuit board 40, and at the same time, the glue permeates between the connecting piece 50 and the first flexible printed circuit board 30 or the second flexible printed circuit board 40, and the glue is solidified to form the pressure dispersion layer 60.
In an embodiment of the present application, as shown in fig. 7, the pressure dispersing layer 60 is located between the connection member 50 and the flexible screen body 10, and the area of the pressure dispersing layer 60 is larger than the contact area between the connection member 50 and the first flexible printed circuit board 30 or the second flexible printed circuit board 40. In the embodiment of the present application, the area of the contact area between the connecting piece 50 and the first flexible printed circuit board 30 or the second flexible printed circuit board 40 is the bottom area of the connecting piece 50, and the pressure dispersing layer 60 is set to be larger than the bottom area of the connecting piece 50, so that the pressure dispersing layer 60 can disperse the acting force exerted on the flexible printed circuit board by the connecting piece 50, increase the contact area between the connecting piece 50 and the flexible printed circuit board, reduce the stress of the flexible display panel, and improve the top printing condition of the flexible display panel.
In the embodiment of the present application, the pressure dispersing layer 60 and the connecting member 50 may be directly connected or indirectly connected.
In the embodiment of the present application, as shown in fig. 7 and 8, the first flexible printed circuit board 30 is located between the connector 50 and the flexible screen 10; the pressure dispersion layer 60 is disposed in the first flexible printed circuit board 30, and a projection of the pressure dispersion layer 60 on the flexible screen body 10 covers at least a projection of the connection member 50 on the flexible screen body 10. In other embodiments, the pressure dispersing layer 60 may be disposed on the first flexible printed circuit board 30 and the second flexible printed circuit board 40, or the second flexible printed circuit board 40 may be disposed between the connector 50 and the flexible screen body 10, and the pressure dispersing layer 60 may be disposed on the second flexible printed circuit board 40. The pressure dispersion layer 60 is directly disposed in the first flexible printed circuit board 30 or/and the second flexible printed circuit board 40, so that the pressure dispersion layer 60 disposed in the first flexible printed circuit board 30 or/and the second flexible printed circuit board 40 can increase the mechanical strength of the first flexible printed circuit board 30 or/and the second flexible printed circuit board 40 contacting the connection member 50, thereby increasing the effect of the first flexible printed circuit board 30 or/and the second flexible printed circuit board 40 in dispersing the pressure of the connection member 50 acting on the flexible screen body 10, and thus reducing the pressure of the connection member 50 acting on the flexible screen body 10. In the present embodiment, the area of the pressure dispersing layer 60 in the first printed circuit board is the same as that of the first printed circuit board, and the area of the pressure dispersing layer 60 in the second printed circuit board is the same as that of the second printed circuit board. In another embodiment, the area of the pressure dispersing layer 60 may be smaller than the area of the first flexible printed circuit board 30 or/and the second flexible printed circuit board 40, and only the area of the bottom of the connecting member 50 needs to be larger than the area of the bottom of the connecting member 50, and the projection of the connecting member 50 on the first flexible printed circuit board 30 or the second flexible printed circuit board 40 is located in the pressure dispersing layer 60, so that the pressure acting between the connecting member 50 and the flexible screen body 10 can be reduced.
In the embodiment of the present application, the first flexible printed circuit board 30 includes a first substrate layer 31 and a first protective layer 32, and the second flexible printed circuit board 40 includes a second substrate layer (not shown) and a second protective layer (not shown). In the embodiment of the present application, the first protection layer 32 and the second protection layer are insulation layers, and protect the first substrate layer 31 and the second substrate layer. In other embodiments, the first protective layer 32 and the second protective layer may be made of other materials.
In one embodiment of the present application, as shown in fig. 7 and 8, the pressure dispersion layer 60 is disposed between the first substrate layer 31 and the first protective layer 32; or/and, the pressure dispersing layer 60 is disposed on the side of the first protective layer 32 facing away from the first substrate layer 31; or/and, the pressure dispersing layer 60 is disposed between the second substrate layer and the second protective layer, or/and, the pressure dispersing layer 60 is disposed on a side of the second protective layer away from the second substrate layer. That is, the pressure dispersing layer 60 is provided in any one or more of the first base material layer 31 and the first protective layer 32, the side of the first protective layer 32 facing away from the first base material layer 31, the between the second base material layer and the second protective layer, and the side of the second protective layer facing away from the second base material layer. By disposing the pressure dispersing layer 60 in the middle or/and the surface of the first flexible printed circuit board 30 and in the middle or/and the surface of the second flexible printed circuit board 40, the pressure dispersing layer 60 in the first flexible printed circuit board 30 or/and the second flexible printed circuit board 40 can reduce the pressure of the connecting piece 50 acting on the flexible screen body 10, and improve the top printing condition of the flexible screen body 10.
Specifically, in the embodiment of the present application, the pressure dispersing layer 60 is disposed between the first substrate layer 31 and the first protective layer 32, and between the second substrate layer and the second protective layer, and the pressure dispersing layer 60 can disperse the pressure brought by the connecting piece 50 along the direction parallel to the first flexible printed circuit board 30 and the second flexible printed circuit board 40, so that the pressure generated by the contact between the dispersing connecting piece 50 and the first flexible printed circuit board 30 or the second flexible printed circuit board 40 can be better enlarged, the pressure of the connecting piece 50 on the flexible screen body 10 is reduced, and the top printing condition of the flexible display panel is improved. In other embodiments, the pressure dispersing layer 60 may also be disposed on the surface of the first flexible printed circuit board 30 and form an integral structure with the first flexible printed circuit board 30; meanwhile, the pressure dispersing layer 60 may also be disposed on the surface of the second flexible printed circuit board 40, and form an integral structure with the second flexible printed circuit board 40; it is also possible to achieve that the pressure dispersion layer 60 reduces the pressure of the connection 50 against the flexible screen body 10.
In the embodiment of the present application, as shown in fig. 8 and 9, the structure of the pressure dispersing layer 60 includes a honeycomb-shaped layered structure, the pressure dispersing layer 60 of the honeycomb-shaped layered structure includes a plurality of hole structures 63, and the central axis direction of the hole structures 63 faces the connecting piece 50, so that the honeycomb-shaped layered structure has a better dispersing effect in a direction parallel to the plane direction of the first flexible printed circuit board 30 or the second flexible printed circuit board 40, and the stress area of the connecting piece 50 contacting the flexible screen body 10 is enlarged. In other embodiments, the central axis of the hole structure 63 of the honeycomb layered structure may be parallel to the first flexible printed circuit board 30 or the second flexible printed circuit board 40, or may extend the stress area of the connection member 50 contacting the flexible screen body 10 to some extent.
In an embodiment of the present application, as shown in fig. 10a to 10d, a first flexible printed circuit board 30 and a second flexible printed circuit board 40 are positioned at opposite ends of the flexible screen body 10. In other embodiments, the first and second flexible printed circuit boards 30 and 40 are located on adjacent sides of the flexible screen body 10.
Specifically, in the embodiment of the present application, as shown in fig. 10a, in the process of assembling the display panel, the flexible screen body 10 is bound to the first flexible printed circuit board 30, and the flexible screen body 10 and the first flexible printed circuit board 30 are located on the same plane, the connecting piece 50 is welded on the first flexible printed circuit board 30, and the connecting piece 50 is located at the light-emitting surface side of the flexible screen body 10 at this time; the touch layer 20 is bound with the second flexible printed circuit board 40; as shown in fig. 10b, the touch layer 20 is attached to the light-emitting surface side of the flexible screen body 10, and at this time, the first flexible printed circuit board 30 and the second flexible printed circuit board 40 are located at opposite ends of the flexible screen body 10; as shown in fig. 10c, the first flexible printed circuit board 30 and the second flexible printed circuit board 40 are folded to the back of the flexible screen body 10, and at this time, the connecting piece 50 is located at the side of the first flexible printed circuit board 30 facing away from the flexible screen body 10; as shown in fig. 10d, the second flexible printed circuit board 40 is inserted into the socket 51 of the connector 50 and pressure is applied to the pressing cover 52 so that the second flexible printed circuit board 40 is brought into close contact with the pressing cover 52 to make electrical connection, thereby electrically connecting the first flexible printed circuit board 30 with the second flexible printed circuit board 40.
The above is just one embodiment in which the flexible screen body 10 of the display panel is attached to the touch layer 20, and the first flexible printed circuit board 30 and the second flexible printed circuit board 40 are connected. In other embodiments, the connector 50 may also be soldered to the second flexible printed circuit board 40, the first flexible printed circuit board 30 is inserted into the socket 51 of the connector 50, and the pressing cover 52 is pressed, so that the first flexible printed circuit board 30 is in close contact with the pressing cover 52. In another embodiment, when the touch layer 20 is attached to the light-emitting surface side of the flexible screen body 10, the first flexible printed circuit board 30 and the second flexible printed circuit board 40 are located on two adjacent sides of the flexible screen body 10.
The present application further includes a second technical solution, a display device, including a driving circuit board (not shown) and the display panel described above, where the display panel is shown in fig. 3 and 4, and includes a first flexible printed circuit board 30 and a second flexible printed circuit board 40; the driving circuit board is bound with the first flexible printed circuit board 30 or the second flexible printed circuit board 40 for driving the display panel.
According to the display device provided by the embodiment of the application, the pressure dispersing layer 60 is arranged on the display panel, so that the contact stress area of the connecting piece 50 and the first flexible printed circuit board 30 or the second flexible printed circuit board 40 can be enlarged, the pressure generated by the connecting piece 50 on the flexible screen body 10 is dispersed, the stress generated by the flexible screen body 10 is dispersed, the pressure of the flexible screen body 10 is reduced, and the top printing condition of the flexible screen body 10 at the position nearby the connecting piece 50 is improved; meanwhile, in the display device of the embodiment of the application, the display panel is connected with the first flexible printed circuit board 30 and the second flexible printed circuit board 40 through the connecting piece 50, so that the driving circuit board only needs to be bound with the first flexible printed circuit board 30 or the driving circuit board only needs to be bound with the second flexible printed circuit board 40, and the driving circuit board can be electrically connected with the flexible screen body 10 and the touch control layer 20, so that the driving circuit board can control the flexible screen body 10 and the touch control layer 20, and the connection mode of the display device is simplified.
The foregoing is only the embodiments of the present application, and therefore, the patent scope of the application is not limited thereto, and all equivalent structures or equivalent processes using the descriptions of the present application and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the application.
Claims (10)
1. A display panel, comprising:
a flexible screen;
the touch control layer is arranged on one side of the light emitting surface of the flexible screen body;
a first flexible printed circuit board bonded to the flexible screen,
one end of the second flexible printed circuit board is bound with the touch control layer;
the connecting piece is positioned on one side of the backlight surface of the flexible screen body and is used for electrically connecting the first flexible printed circuit board and the second flexible printed circuit board;
and the pressure dispersing layer is positioned in a pressure conduction path between the connecting piece and the flexible screen body and is used for reducing the pressure of the connecting piece to the flexible screen body.
2. The display panel according to claim 1, wherein the pressure dispersion layer is provided on an outer peripheral side of a contact area of the connection member with the first flexible printed circuit board or the second flexible printed circuit board, and the pressure dispersion layer is connected to at least an outer peripheral side of the connection member.
3. The display panel according to claim 2, wherein the pressure dispersion layer is disposed around the connection member and connects the first flexible printed circuit board or the second flexible printed circuit board adjacent to the connection member.
4. The display panel according to claim 2, wherein a part of the pressure dispersion layer is located between the connection member and the first flexible printed circuit board or a part of the pressure dispersion layer is located between the connection member and the second flexible printed circuit board.
5. The display panel of claim 1, wherein the pressure dispersion layer is located between the connection member and the flexible screen body, and an area of the pressure dispersion layer is larger than an area of a contact area of the connection member with the first flexible printed circuit board or the second flexible printed circuit board.
6. The display panel of claim 5, wherein the first flexible printed circuit board or/and the second flexible printed circuit board is located between the connector and the flexible screen;
the pressure dispersion layer is arranged in the first flexible printed circuit board or/and the second flexible printed circuit board, and the orthographic projection of the pressure dispersion layer on the flexible screen body at least covers the orthographic projection of the connecting piece on the flexible screen body.
7. The display panel of claim 5, wherein the first flexible printed circuit board comprises a first substrate layer and a first protective layer, and the second flexible printed circuit board comprises a second substrate layer and a second protective layer;
the pressure dispersing layer is arranged between the first substrate layer and the first protective layer, or/and the pressure dispersing layer is arranged on one side of the first protective layer, which is away from the first substrate layer;
or/and, the pressure dispersion layer is arranged between the second substrate layer and the second protective layer, or/and, the pressure dispersion layer is arranged on one side of the second protective layer away from the second substrate layer.
8. The display panel of claim 5, wherein the structure of the pressure-dispersing layer comprises a honeycomb-like layered structure.
9. The display panel of claim 1, wherein the display panel comprises,
the first flexible printed circuit board and the second flexible printed circuit board are positioned at two opposite ends or two adjacent sides of the flexible screen body.
10. A display device comprising a drive circuit board and the display panel of any one of claims 1-9, the display panel comprising a first flexible printed circuit board and a second flexible printed circuit board;
the driving circuit board is bound with the first flexible printed circuit board or the second flexible printed circuit board and is used for driving the display panel.
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| CN202111210495.7A CN114067683B (en) | 2021-10-18 | 2021-10-18 | Display panel and display device |
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| CN202111210495.7A CN114067683B (en) | 2021-10-18 | 2021-10-18 | Display panel and display device |
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| CN114067683A (en) | 2022-02-18 |
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