CN114170917B - Display module and display device - Google Patents

Display module and display device Download PDF

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Publication number
CN114170917B
CN114170917B CN202210032745.0A CN202210032745A CN114170917B CN 114170917 B CN114170917 B CN 114170917B CN 202210032745 A CN202210032745 A CN 202210032745A CN 114170917 B CN114170917 B CN 114170917B
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China
Prior art keywords
extension
connection portion
display panel
connection
circuit board
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CN202210032745.0A
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Chinese (zh)
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CN114170917A (en
Inventor
郑财
丁立薇
王佳男
李锋
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Kunshan Govisionox Optoelectronics Co Ltd
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Kunshan Govisionox Optoelectronics Co Ltd
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Priority to CN202210032745.0A priority Critical patent/CN114170917B/en
Publication of CN114170917A publication Critical patent/CN114170917A/en
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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
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13452—Conductors connecting driver circuitry and terminals of panels
    • 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
    • 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
    • G09F9/35—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 liquid crystals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The application provides a display module and a display device, wherein the display module comprises a display panel and a flexible circuit board, one of the display panel and the flexible circuit board comprises a first connecting part, the other of the display panel and the flexible circuit board comprises a second connecting part, the first connecting part and the second connecting part are at least partially overlapped along the thickness direction of the display module and are in binding connection at the overlapping position, the edge of the first connecting part is provided with an extension part, and the extension part and the first connecting part are respectively attached to the outer surfaces of the second connecting part in different directions. The extension portion may increase a connection area between the display panel and the flexible circuit board. Therefore, the display module and the display device provided by the embodiment of the application can improve the connection strength between the display panel and the flexible circuit board, and ensure the signal transmission stability between the IC and the display panel so as to ensure the signal stability of the display module and the display device.

Description

Display module and display device
Technical Field
The application relates to the technical field of display devices, in particular to a display module and a display device.
Background
An Organic Light-Emitting Diode (OLED) has the characteristics of active Light emission, high contrast, ultra-thin, low temperature resistance, fast response speed, low power consumption, wide viewing angle, strong shock resistance and the like, so that the OLED is increasingly applied.
In the related art, chip On Film (COF) technology is a die-On Film packaging technology for fixing a driving circuit (Integrated Circuit, IC) On a flexible circuit board (Flexible Printed Circuit, FPC). The IC on the display panel is integrated on the FPC to form the COF flexible circuit board, the COF flexible circuit board is connected with the display panel in a binding mode, and meanwhile the COF flexible circuit board is bent to the backlight surface of the display panel, so that the space of the lower frame is saved, and the narrowing of the lower frame is realized.
However, the connection strength between the display panel and the flexible circuit board is low, resulting in poor signal transmission stability between the IC and the display panel.
Disclosure of Invention
In view of at least one technical problem described above, embodiments of the present application provide a display module and a display device, which can improve the connection strength between a display panel and a flexible circuit board, and ensure the signal transmission stability between an IC and the display panel, so as to ensure the signal stability of the display module and the display device.
In order to achieve the above object, the embodiment of the present application provides the following technical solutions:
the first aspect of the embodiment of the application provides a display module, which comprises a display panel and a flexible circuit board, wherein one of the display panel and the flexible circuit board comprises a first connecting part, the other of the display panel and the flexible circuit board comprises a second connecting part, the first connecting part and the second connecting part are at least partially overlapped along the thickness direction of the display module and are in binding connection at an overlapping position, an extension part is arranged at the edge of the first connecting part, and the extension part and the first connecting part are respectively attached to the outer surfaces of the second connecting part in different directions.
The display module provided by the embodiment of the application comprises the display panel and the flexible circuit board, wherein one of the display panel and the flexible circuit board comprises the first connecting part, and the other of the display panel and the flexible circuit board comprises the second connecting part, and the first connecting part and the second connecting part are in binding connection, so that signal transmission on the display panel and the flexible circuit board is realized. The first connecting part and the second connecting part are at least partially overlapped along the thickness direction of the display module, and are in binding connection at the overlapped position. The edge of the first connecting part is provided with an extension part, and the extension part and the first connecting part are respectively attached to the outer surfaces of the second connecting part in different directions. The second connecting part is connected with the first connecting part through the joint surface between the second connecting part and the first connecting part, and the second connecting part is also connected with the extension part through the joint surface between the second connecting part and the extension part. Like this, the extension can increase the area of connection between display panel and the flexible circuit board to improve the joint strength between display panel and the flexible circuit board, improve the signal transmission stability between IC and the display panel, with the signal stability of assurance display module assembly and display device.
In one possible implementation, the extension portion is located at an edge of the first connection portion extending in a length direction, and an extending direction of the extension portion intersects with an extending direction of the first connection portion;
it is possible to realize that the extension direction of the extension portion is perpendicular to the extension direction of the first connection portion.
In this way, the extension part and the first connecting part are positioned on different planes, so that the overlarge total area of the extension part and the first connecting part on the same plane can be avoided.
In one possible implementation, the extension portion is attached to a side surface of the second connection portion extending in the thickness direction;
it is possible to realize that the side surfaces of the second connection portion extending in the thickness direction include a first side surface and a second side surface, the first side surface and the second side surface being disposed opposite each other in the width direction of the second connection portion, and the extension portion being attached to the first side surface and/or the second side surface.
Thus, the connection between the extension part and the second connection part is simpler and the operability is strong.
In one possible implementation, the extension portion includes a first extension portion and a second extension portion, the first extension portion and the second extension portion are respectively located on opposite sides of the first connection portion in the width direction, the first extension portion is attached to the first side surface, and the second extension portion is attached to the second side surface.
Like this, the structure of epitaxial portion is comparatively simple, and first epitaxial portion and second epitaxial portion play spacing effect to the second connecting portion.
In one possible implementation, the extension is attached to a surface of the second connection portion facing away from the first connection portion.
Like this, extension and first connecting portion can play limiting displacement to the second connecting portion, and extension and second connecting portion's connection area is great, can guarantee extension and second connecting portion's connection stability.
In one possible implementation, the second connection portion has a thickened portion, the thickness of which is greater than the thickness of the remaining portion of the second connection portion, and the extension portion is attached to a side surface of the thickened portion extending in the thickness direction;
it is possible to provide that the extension is attached to the surface of the thickened portion facing away from the first connection portion.
Thus, the thickened portion can increase the area of the side surface of the second connecting portion extending in the thickness direction, so that the connection area of the extension portion and the second connecting portion is increased, and the connection stability of the extension portion and the second connecting portion is improved.
In one possible implementation manner, the first connection portion is provided with a first pin on a surface facing the second connection portion, and the second connection portion is provided with a second pin on a surface facing the first connection portion, and the first pin is electrically connected with the second pin.
Therefore, the first connecting part and the second connecting part are connected in a binding mode, and the operability is high.
In one possible implementation, the first pin is located on a face of the extension portion facing the second connection portion, and the second pin is located on a face of the second connection portion facing the extension portion.
Therefore, the binding connection between the extension part and the second connection part can improve the binding connection stability between the display panel and the flexible circuit board.
In one possible implementation, the first connection portion is located at an end of the display panel near a side of the flexible circuit board, and the second connection portion is located at an end of the flexible circuit board near a side of the display panel.
Like this, first connecting portion and second connecting portion all are located the border position, and first connecting portion and second connecting portion connect comparatively simply, and maneuverability is strong, and the mutual influence is less between display panel and the flexible circuit board.
A second aspect of the embodiments of the present application provides a display device, including the display module set in the first aspect.
The display device provided by the embodiment of the application comprises a display module, wherein the display module comprises a display panel and a flexible circuit board, one of the display panel and the flexible circuit board comprises a first connecting part, and the other of the display panel and the flexible circuit board comprises a second connecting part, and the first connecting part and the second connecting part are in binding connection, so that signal transmission on the display panel and the flexible circuit board is realized. The first connecting part and the second connecting part are at least partially overlapped along the thickness direction of the display module, and are in binding connection at the overlapped position. The edge of the first connecting part is provided with an extension part, and the extension part and the first connecting part are respectively attached to the outer surfaces of the second connecting part in different directions. The second connecting part is connected with the first connecting part through the joint surface between the second connecting part and the first connecting part, and the second connecting part is also connected with the extension part through the joint surface between the second connecting part and the extension part. Like this, the extension can increase the area of connection between display panel and the flexible circuit board to improve the joint strength between display panel and the flexible circuit board, improve the signal transmission stability between IC and the display panel, with the signal stability of assurance display module assembly and display device.
The construction of the application, together with other objects and advantages thereof, will be best understood from the following description of the preferred embodiments when read in connection with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an assembly structure of a display panel and a flexible circuit board according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an assembled display module according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an epitaxial portion according to an embodiment of the present application;
FIG. 4 is a cross-sectional view taken along the B-B direction of FIG. 2;
FIG. 5 is another cross-sectional view taken along the direction B-B of FIG. 2;
FIG. 6 is a schematic diagram of a thickened portion according to an embodiment of the present application;
fig. 7 is a schematic view of another structure of an epitaxial portion according to an embodiment of the present application;
fig. 8 is another schematic structural view of an epitaxial portion according to an embodiment of the present application;
fig. 9 is another schematic structural diagram of an epitaxial portion according to an embodiment of the present application.
Reference numerals illustrate:
100-a display module; 110-a display panel;
110 a-a display area; 110 b-inflection region;
110 c-binding area; 111-a first connection;
120-extension; 121-a first extension;
122-a second epitaxial portion; 123-a third extension;
124-fourth extension; 125-fifth extension;
130-a flexible circuit board; 131-a second connection;
132-thickening; 133-a second pin;
140-anisotropic conductive adhesive.
Detailed Description
In the related art, the display panel comprises a display area and a binding area, the display panel positioned in the binding area is connected with the flexible circuit board in a binding way, and a driving circuit is arranged on the flexible circuit board, so that electric signal transmission between the IC and the display panel is realized. The flexible circuit board and the display panel are provided with an overlapping area along the thickness direction of the display panel, and the flexible circuit board is attached to the display panel in the overlapping area and is connected through binding surfaces of the flexible circuit board and the display panel.
However, the area of binding and laminating between the display panel and the flexible circuit board is smaller, so that the connection strength between the display panel and the flexible circuit board is lower, the signal transmission stability between the IC and the display panel is poorer, and the signal stability of the display module and the display device is poorer.
Based on at least one technical problem described above, an embodiment of the present application provides a display module and a display device, where the display module includes a display panel and a flexible circuit board, one of the display panel and the flexible circuit board includes a first connection portion, and the other of the display panel and the flexible circuit board includes a second connection portion, and the first connection portion and the second connection portion are bound and connected, so as to realize signal transmission on the display panel and the flexible circuit board. The first connecting part and the second connecting part are at least partially overlapped along the thickness direction of the display module, and are in binding connection at the overlapped position. The edge of the first connecting part is provided with an extension part, and the extension part and the first connecting part are respectively attached to the outer surfaces of the second connecting part in different directions. The second connecting part is connected with the first connecting part through the joint surface between the second connecting part and the first connecting part, and the second connecting part is also connected with the extension part through the joint surface between the second connecting part and the extension part. Like this, the extension can increase the area of connection between display panel and the flexible circuit board to improve the joint strength between display panel and the flexible circuit board, improve the signal transmission stability between IC and the display panel, with the signal stability of assurance display module assembly and display device.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of 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, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The display device according to the embodiment of the present application will be described with reference to fig. 1 to 9.
The present embodiment provides a display device, which includes a display module 100. The display device may be a mobile or fixed terminal with a display module 100, such as electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, an ultra-personal computer, a navigator, etc.
The display module 100 according to the embodiment of the present application will be described below.
As shown in fig. 1 and 2, the display module 100 may include a display panel 110 and a flexible circuit board 130, the display panel 110 and the flexible circuit board 130 may be connected in a binding manner, and an IC may be disposed on the flexible circuit board 130, so as to implement electrical signal transmission between the IC and the display panel 110.
The display panel 110 may be an Organic Light-Emitting Diode (OLED) display panel, a Micro Light-Emitting Diode (Micro Light Emitting Diode LED or μled) display panel, or a liquid crystal (Liquid Crystal Display LCD) display panel.
As shown in fig. 3, the display panel 110 includes a display area 110a and a binding area 110c, and the display area 110a is disposed adjacent to the binding area 110c. The display panel 110 located within the bonding area 110c may be used for bonding the flexible circuit board 130.
In addition, the display panel 110 may further include a bending region 110b, the bending region 110b is located between the display region 110a and the binding region 110c, and the bending region 110b connects the display region 110a and the binding region 110c. By bending the bending region 110b, the binding region 110c can be bent to the backlight surface of the display panel 110, so that the frame width of the display device can be reduced.
One of the display panel 110 and the flexible circuit board 130 includes a first connection part 111, and the other of the display panel 110 and the flexible circuit board 130 includes a second connection part 131. Wherein, as shown in fig. 4, the first connection part 111 may be disposed on the display panel 110, and the second connection part 131 may be disposed on the flexible circuit board 130; alternatively, the first connection part 111 may be disposed on the flexible circuit board 130, and the second connection part 131 may be disposed on the display panel 110.
The embodiment of the application is described taking the display panel 110 including the first connection portion 111 and the flexible circuit board 130 including the second connection portion 131 as an example.
As shown in fig. 2 and 4, the first connection part 111 may be disposed on the display panel 110, and the second connection part 131 may be disposed on the flexible circuit board 130. The first connection portion 111 may be located at an end of the display panel 110 near the flexible circuit board 130, for example, the first connection portion 111 may be located in a binding region 110c of the display panel 110, and the first connection portion 111 has less influence on other structural layouts on the display panel 110.
The second connection portion 131 may be located at an end portion of the flexible circuit board 130 near the side of the display panel 110, and the second connection portion 131 has less influence on other structural layouts on the flexible circuit board 130. In addition, the first connection portion 111 and the second connection portion 131 are located at edge positions, the connection between the first connection portion 111 and the second connection portion 131 is simple, the operability is high, and the interaction between the display panel 110 and the flexible circuit board 130 is small.
In this embodiment, as shown in fig. 1, the first connection portion 111 and the second connection portion 131 are at least partially stacked along the thickness direction of the display module 100, and the first connection portion 111 and the second connection portion 131 are bonded and connected at the stacked position. Here, a portion a in fig. 1 shows an overlapping region of the first connection portion 111 and the second connection portion 131. The first and second connection parts 111 and 131 may partially overlap or completely overlap. The surface of the first connecting portion 111 facing the second connecting portion 131 is bonded to the surface of the second connecting portion 131 facing the first connecting portion 111, and connects the first connecting portion 111 and the second connecting portion 131.
In this embodiment, as shown in fig. 3, the edge of the first connecting portion 111 is provided with the extension portion 120, and the extension portion 120 may be attached and connected to the outer surface of the second connecting portion 131. The extension portion 120 can increase the connection area between the display panel 110 and the flexible circuit board 130, thereby improving the connection strength between the display panel 110 and the flexible circuit board 130, and improving the signal transmission stability between the IC and the display panel 110, so as to ensure the signal stability of the display module 100 and the display device.
As shown in fig. 4, the surface of the first connection portion 111 facing the second connection portion 131 is located on a different plane from the surface of the extension portion 120 facing the second connection portion 131, and the extension portion 120 and the first connection portion 111 are respectively attached to the outer surfaces of the second connection portion 131 facing different directions, so that the extension portion 120 and the first connection portion 111 can be prevented from being located on the same plane, and the total occupied area of the extension portion 120 and the first connection portion 111 on the same plane is prevented from being excessively large.
It should be noted that, in the embodiment of the present application, the display panel 110 having a substantially rectangular shape is taken as an example for illustration, and the first direction of the present application, i.e. the X direction in fig. 3; the second direction of the present application, the Y direction in fig. 3; the third direction of the present application, the Z direction in fig. 3. The width directions of the display panel 110 (the display region 110a, the binding region 110c, and the bending region 110 b), the first connection portion 111, and the second connection portion 131 may be the first direction X; the length direction (i.e., the extending direction) of the display panel 110, the first connection portion 111, and the second connection portion 131 may be the second direction Y; the thickness direction of the display panel 110, the first connection portion 111, and the second connection portion 131 may be the third direction Z. The length direction, width direction, thickness direction in the present application are for convenience of description only and are not meant to limit any dimension, e.g., the length may be smaller, equal to, or greater than the width.
Specifically, as shown in fig. 3, the first connection portion 111 has an edge extending in the length direction Y, to which the extension portion 120 is connected. As shown in fig. 4, the extending direction of the extension portion 120 intersects with the extending direction of the first connection portion 111, the extension portion 120 and the first connection portion 111 are located in different planes, and the extension portion 120 and the first connection portion 111 are respectively attached to the outer surfaces of the second connection portion 131 with different orientations, so that an excessive total area of the extension portion 120 and the first connection portion 111 on the same plane can be avoided.
As shown in fig. 4, the extending direction of the extension portion 120 is perpendicular to the extending direction of the first connection portion 111, the extension portion 120 extends along the Z direction, the first connection portion 111 extends along the X direction, the angle between the extending direction of the extension portion 120 and the extending direction of the first connection portion 111 is 90 °, the angle between the extension portion 120 and the first connection portion 111 is easier to determine, and the bonding difficulty between the extension portion 120 and the second connection portion 131 can be reduced.
The extension portion 120 is attached to the second connecting portion 131, one end of the extension portion 120 away from the first connecting portion 111 may incline toward the center direction of the first connecting portion 111, an included angle between the extending direction of the extension portion 120 and the extending direction of the first connecting portion 111 is an acute angle, the extension portion 120 may prevent the second connecting portion 131 from moving toward the direction away from the first connecting portion 111, the extension portion 120 plays a limiting role on the second connecting portion 131, the extension portion 120 may better fix the second connecting portion 131, and connection stability of the display panel 110 and the flexible circuit board 130 is improved.
A description will be given below of an implementation of the bonding connection between the extension 120 and the second connection portion 131.
In some examples, as shown in fig. 4, the extension portion 120 may be attached to a side surface of the second connection portion 131 extending in the thickness direction, so that a connection area between the display panel 110 and the flexible circuit board 130 may be increased, thereby improving a connection strength between the display panel 110 and the flexible circuit board 130, and improving a signal transmission stability between the IC and the display panel 110, so as to ensure a signal stability of the display module 100 and the display device.
Specifically, the side surfaces of the second connection portion 131 extending in the thickness direction include a first side surface, a second side surface, and a third side surface, where the first side surface and the second side surface are disposed opposite to each other in the width direction X of the second connection portion 131, and the third side surface is an outer surface of the second connection portion 131 near the display area 110a side. The extension 120 may be attached to at least one of the first side surface, the second side surface, and the third side surface. When the extension part 120 is simultaneously attached to the first side surface and the second side surface, the first side surface and the second side surface can prevent the second connection part 131 from moving along the width direction X, so as to limit the second connection part 131, fix the second connection part 131 better, and improve the connection stability of the display panel 110 and the flexible circuit board 130.
In other examples, as shown in fig. 5, the extension 120 may also be attached to a surface of the second connection portion 131 facing away from the first connection portion 111. At this time, the extension portion 120 can prevent the second connection portion 131 from moving towards the direction away from the first connection portion 111, and the extension portion 120 and the first connection portion 111 play a limiting role on the second connection portion 131, so that the second connection portion 131 can be better fixed, and the connection stability of the display panel 110 and the flexible circuit board 130 is improved.
Embodiments of the present application are described with the epitaxial portion 120 attached to the first side surface and the second side surface.
In some embodiments, the second connection portion 131 may integrally form a thickened portion 132, and the thickness of the thickened portion 132 is greater than that of the rest of the flexible circuit board 130. I.e., the thickness of the second connection portion 131 is greater than the thickness of the rest of the flexible circuit board 130, the area of the side surface of the second connection portion 131 extending in the thickness direction is greater, i.e., the areas of the first side surface and the second side surface are greater, and the connection area of the extension portion 120 and the second connection portion 131 is greater. In addition, the thickness of the rest part of the flexible circuit board 130 except the thickened part 132 is smaller, so that the bending performance of the rest part of the flexible circuit board 130 is better, and the volume occupied by the flexible circuit board 130 is smaller.
In other examples, the portion of the second connection portion 131 may form a thickened portion 132, and the thickness of the thickened portion 132 may be greater than the thickness of the remaining portion of the second connection portion 131, and the thickness of the thickened portion 132 may also be greater than the thickness of the remaining portion of the flexible circuit board 130 (i.e., the portion other than the second connection portion 131). The thickened portion 132 can increase the area of the side surface of the second connection portion 131 extending in the thickness direction, that is, the areas of the first side surface and the second side surface, thereby increasing the connection area of the extension portion 120 with the first side surface and the second side surface.
In other examples, the outer extension 120 may be further attached to a surface of the thickened portion 132 on a side facing away from the first connection portion 111, and the principle thereof is the same as that of the outer extension 120 attached to a surface of the second connection portion 131 on a side facing away from the first connection portion 111, which is not described herein.
It will be appreciated that in the embodiment having the thickened portion 132 on the flexible circuit board 130, the thickened portion 132 may include a fourth side surface, the fourth side surface being an outer surface of the thickened portion 132 on a side away from the display area 110a, and the third side surface and the fourth side surface being two outer surfaces disposed opposite to each other along the length direction Y of the second connecting portion 131. The extension 120 may be fitted on the fourth side surface, thereby increasing the connection area between the extension 120 and the second connection 131. When the extension 120 is attached to the third side surface and the fourth side surface at the same time, the extension 120 plays a limiting role on the second connection portion 131.
The binding connection between the flexible circuit board 130 and the display panel 110 is described below.
In some examples, a first pin may be disposed on a surface of the first connecting portion 111 facing the second connecting portion 131, a second pin 133 may be disposed on a surface of the second connecting portion 131 facing the first connecting portion 111, the first pin and the second pin 133 are electrically connected, and the first connecting portion 111 and the second connecting portion 131 are bound and connected by a bonding surface of the first connecting portion and the second connecting portion, so that a binding manner is simpler and implementation is easier.
In other examples, the first pins may be further located on a surface of the outer portion 120 facing the second connection portion 131, and the second pins 133 may be further located on a surface of the second connection portion 131 facing the outer portion 120 (fig. 6), where the outer portion 120 and the second connection portion 131 are bound and connected by an abutting surface of the outer portion 120 and the second connection portion, so as to increase an area of the binding connection between the display panel 110 and the flexible circuit board 130, and improve stability of signal transmission between the display panel 110 and the flexible circuit board 130.
The first pins and the second pins 133 may be plural, the first pins may be distributed on the first connection portion 111 at intervals, the first pins may be further distributed on the epitaxial portion 120 at intervals, and the second pins 133 may be distributed on the second connection portion 131 at intervals. Wherein, a first pin is correspondingly connected with a second pin 133.
The first pins and the second pins 133 may be soldered, or, as shown in fig. 4, the first pins and the second pins 133 are connected by anisotropic conductive adhesive 140 (Anisotropic Conductive Film, abbreviated as ACF).
The implementation of the epitaxial portion 120 is explained below.
In some examples, as shown in fig. 3, the extension part 120 may include a first extension part 121, the first extension part 121 being located at one side of the first connection part 111 in the width direction X, the first extension part 121 being attached to a first side surface, the first extension part 121 increasing a connection area between the display panel 110 and the flexible circuit board 130. Alternatively, the extension 120 may include a second extension 122, the second extension 122 being positioned at the other side of the first connection portion 111 in the width direction X, the second extension 122 being attached to the second side surface, the second extension 122 increasing the connection area between the display panel 110 and the flexible circuit board 130. Or, the extension portion 120 includes the first extension portion 121 and the second extension portion 122, the second connection portion 131 is located between the first extension portion 121 and the second extension portion 122, the first extension portion 121 and the second extension portion 122 play a limiting role on the second connection portion 131, the extension portion 120 can better fix the second connection portion 131, and connection stability of the display panel 110 and the flexible circuit board 130 is improved.
In other examples, as shown in fig. 5 and 7, the extension 120 may further include a fifth extension 125, where the fifth extension 125 is configured to be attached to a surface of the second connection portion 131 on a side facing away from the first connection portion 111. The fifth extension 125 may be connected to a side of the first extension 121 facing away from the first connection portion 111, or the fifth extension 125 may be further connected to a side of the second extension 122 facing away from the first connection portion 111, or the fifth extension 125 may be simultaneously connected to a side of the first extension 121 and the second extension 122 facing away from the first connection portion 111.
In other examples, as shown in fig. 7, the extension 120 may further include a third extension 123, where the third extension 123 is configured to be attached to the third side surface. The third epitaxial portion 123 may be connected to one side of any one or more of the first epitaxial portion 121, the second epitaxial portion 122, and the fifth epitaxial portion 125, which is adjacent to the display region 110 a.
In other examples, as shown in fig. 8 and 9, the extension 120 may further include a fourth extension 124, and the fourth extension 124 may be configured to conform to a fourth side surface. The fourth extension 124 may be connected to one side of any one or more of the first extension 121, the second extension 122, and the fifth extension 125 facing away from the display area 110 a.
It is understood that the connection manner between the first extension 121, the second extension 122, the third extension 123, the fourth extension 124 and the fifth extension 125 may be other connection manners, as long as each extension 120 can be used to attach to the first side surface, the second side surface, the third side surface, the fourth side surface, and the surface of the second connection portion 131 facing away from the first connection portion 111, respectively.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims (13)

1. The utility model provides a display module assembly, its characterized in that, includes display panel and flexible circuit board, display panel with one of flexible circuit board includes first connecting portion, display panel with the other of flexible circuit board includes second connecting portion, first connecting portion with second connecting portion are followed display module assembly's thickness direction is at least partly to be folded, and bind in folding the position and connect, the edge of first connecting portion is provided with epitaxial portion, epitaxial portion with first connecting portion laminate respectively on the surface of the different orientation of second connecting portion.
2. The display module assembly of claim 1, wherein the extension portion is located at an edge of the first connection portion extending in a length direction, and an extending direction of the extension portion intersects an extending direction of the first connection portion.
3. The display module assembly of claim 2, wherein the extension direction of the extension portion is perpendicular to the extension direction of the first connection portion.
4. The display module assembly according to claim 1, wherein the extension portion is attached to a side surface of the second connection portion extending in a thickness direction.
5. The display module assembly according to claim 4, wherein the side surfaces of the second connection portion extending in the thickness direction include a first side surface and a second side surface, the first side surface and the second side surface being disposed opposite each other in the width direction of the second connection portion, and the extension portion is attached to the first side surface and/or the second side surface.
6. The display module assembly of claim 5, wherein the extension includes a first extension and a second extension, the first extension and the second extension being located on opposite sides of the first connection portion in a width direction, respectively, the first extension being attached to the first side surface, and the second extension being attached to the second side surface.
7. The display module assembly of any one of claims 1-6, wherein the extension portion is attached to a surface of the second connection portion on a side facing away from the first connection portion.
8. The display module assembly of any one of claims 1-6, wherein the second connection portion has a thickened portion, the thickened portion having a thickness greater than a thickness of a remaining portion of the second connection portion, and the extension portion is attached to a side surface of the thickened portion extending in a thickness direction.
9. The display module assembly of claim 8, wherein the extension is attached to a surface of the thickened portion on a side facing away from the first connection portion.
10. The display module assembly of any one of claims 1-6, wherein a first pin is disposed on a surface of the first connection portion facing the second connection portion, a second pin is disposed on a surface of the second connection portion facing the first connection portion, and the first pin and the second pin are electrically connected.
11. The display module assembly of claim 10, wherein the first pin is located on a face of the extension portion facing the second connection portion side, and the second pin is located on a face of the second connection portion facing the extension portion side.
12. The display module assembly of any one of claims 1-6, wherein the first connection portion is located at an end of the display panel near the side of the flexible circuit board, and the second connection portion is located at an end of the flexible circuit board near the side of the display panel.
13. A display device comprising a display module according to any one of the preceding claims 1-12.
CN202210032745.0A 2022-01-12 2022-01-12 Display module and display device Active CN114170917B (en)

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CN113473695A (en) * 2021-06-29 2021-10-01 昆山国显光电有限公司 Flexible circuit module and display panel

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