CN214587758U - Screen assembly and terminal equipment - Google Patents

Abstract

The disclosure relates to a screen assembly and a terminal device, and belongs to the technical field of terminal devices. The screen assembly includes: the flexible screen, mainboard, flexible circuit board and first cushion. Wherein the main board has opposite first and second surfaces, the first surface facing the back of the flexible screen; the flexible circuit board is respectively connected with the back of the flexible screen and the second surface of the main board, the middle part of the flexible circuit board is a bent part, and the bent part is turned over from the side edge of the main board to the second surface of the main board; the first cushion is located the first part of kink with between the flexible screen, the first part of kink is the kink is located the flexible screen with the part between the mainboard.

Description

Screen assembly and terminal equipment

Technical Field

The disclosure relates to the field of terminal equipment, in particular to a screen assembly and terminal equipment.

Background

With the development of electronic devices, the development of screen assembly technology is increasing. The flexible screen is adopted as a display screen of the screen assembly, which is an important direction for the development of the screen assembly at present.

SUMMERY OF THE UTILITY MODEL

The utility model provides a screen subassembly and terminal equipment can solve the problem that the flexible screen receives the extrusion of flexible circuit board and produces the white spot.

At least one embodiment of the present disclosure provides a screen assembly, including: the flexible screen, mainboard, flexible circuit board and first cushion.

Wherein the main board has opposite first and second surfaces, the first surface facing the back of the flexible screen; the flexible circuit board is respectively connected with the back of the flexible screen and the second surface of the main board, the middle part of the flexible circuit board is a bent part, and the bent part is turned over from the side edge of the main board to the second surface of the main board; the first cushion is located the first part of kink with between the flexible screen, the first part of kink is the kink is located the flexible screen with the part between the mainboard.

Optionally, the first pad is connected to the first portion of the bending portion and the flexible screen, respectively.

Optionally, the flexible circuit board further has a binding part connected with a back surface of the flexible screen;

the screen assembly further includes: the middle frame and the second cushion block;

the middle frame is provided with a frame and a front shell, the edge of the front shell is connected with the inner wall of the frame, and the front shell is positioned between the binding part of the flexible circuit board and the mainboard; the edge of the front shell is provided with a through hole, and the middle part of the bent part is positioned in the through hole;

the second cushion block is located in the through hole, located in the concave surface of the bending part and between the front shells, and connected with the bending part and at least one of the front shells.

Optionally, the thickness of the second spacer is equal to the thickness of the front cover in a direction perpendicular to the back surface of the flexible screen.

Optionally, in the width direction of the flexible screen, the width of the second pad is in a range from 0.5 mm to 0.7 mm;

in the length direction of the flexible screen, the length of the second cushion block is equal to that of the through hole.

Optionally, the screen assembly further comprises: carrying out gum application on the flexible circuit board;

the flexible circuit board back adhesive is positioned between the binding part of the flexible circuit board and the flexible screen, and is respectively bonded with the flexible circuit board and the flexible screen;

in the perpendicular to in the direction of the back of flexible screen, the thickness of binding portion is greater than the thickness of kink, the thickness of first cushion equals the binding portion with the thickness sum of flexible circuit board gum with the difference of the thickness of kink.

Optionally, the binding portion of the flexible circuit board is in a strip shape, and the length direction of the binding portion is the same as the width direction of the flexible screen;

in the length direction of the flexible screen, the length of the first cushion block is equal to the width of the bending part of the flexible circuit board, and in the width direction of the flexible screen, the width range of the first cushion block is 7-10 mm.

Optionally, at least one of the first head block and the second head block is a flexible head block.

Optionally, the first cushion block is a double-sided tape cushion block.

Optionally, the second cushion block is a foam cushion block.

At least one embodiment of the present disclosure provides a terminal device comprising a screen assembly as described in any one of the preceding claims.

In the embodiment of the disclosure, the main board is connected with the flexible screen through the flexible circuit board, so that the main board can drive the flexible screen. The middle part of flexible circuit board is the kink, make the flexible circuit board can turn over the second surface and the mainboard connection that turn over to the mainboard through the side of mainboard through the kink, because the kink of flexible circuit board can have certain surplus because the needs design of lighting test, consequently in order to avoid the kink in redundant part to support and lean on the flexible screen, set up first cushion between kink and flexible screen, support the kink through first cushion for the surplus of kink can't support again and lean on the flexible screen. Therefore, the stress deformation of the flexible screen is avoided, the poor display problems such as white spots and the like caused by deformation of the flexible screen are avoided, and the display effect of the flexible screen in the screen assembly is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a diagram showing a positional relationship between a flexible screen and a flexible circuit board in a screen assembly in the related art;

fig. 2 is a diagram showing a positional relationship among a flexible screen, a flexible circuit board, and a main board in a screen assembly according to the related art;

FIG. 3 is a schematic cross-sectional view of a screen assembly provided by an embodiment of the present disclosure;

FIG. 4 is a diagram of a positional relationship between a flexible circuit board and other components provided by an embodiment of the present disclosure;

FIG. 5 is a schematic cross-sectional view of a screen assembly provided by an embodiment of the present disclosure;

FIG. 6 is a diagram of a positional relationship between a flexible circuit board and other components provided by an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a middle frame provided in the embodiment of the present disclosure;

FIG. 8 is a schematic cross-sectional view of a screen assembly provided by an embodiment of the present disclosure;

FIG. 9 is a diagram of a positional relationship between a flexible circuit board and other components provided by an embodiment of the present disclosure;

FIG. 10 is a schematic cross-sectional view of a screen assembly provided by an embodiment of the present disclosure;

fig. 11 is a diagram of a positional relationship between a flexible circuit board and other components provided in an embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," "third," and similar terms in the description and claims of the present disclosure are not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.

The technical problems in the related art are explained below with reference to fig. 1 and 2:

fig. 1 is a diagram showing a positional relationship between a flexible screen and a flexible circuit board in a screen assembly in the related art. As shown in fig. 1, a Flexible circuit board (FPC) 300 has a binding portion 302, a bending portion 301, and a connector 303 connected in this order. In the assembly process of the screen assembly, the binding portion 302 of the flexible circuit board 300 is bound with the flexible screen 100 to realize electrical connection. The surface on which the flexible screen 100 is bound to the binding portion 302 is the back surface of the flexible screen 100, and the back surface of the flexible screen is the surface opposite to the light exit surface (display surface) of the flexible screen 100. The binding part 302 has a binding terminal 3020 thereon, and the binding part 302 is bound with the connection terminal on the back surface of the flexible screen 100 through the binding terminal.

After the binding is completed, the lighting test of the flexible screen 100 is required, and during the test, the connector 303 is required to be connected with the test equipment, and in order to connect the connector 303 with the test equipment, one end of the flexible circuit board 300 close to the connector 303 extends out of the screen from the side of the flexible screen 100, so that the connector 303 is outside the flexible screen 100. At this time, the bent portion 301 is not yet bent.

Since one end of the flexible circuit board 300 close to the connector 303 needs to extend out from the side of the flexible screen 100, during the design, the flexible circuit board 300 is designed to have a certain length margin, and the bent part 301 of the flexible circuit board 300 is longer than what is actually needed, but this design brings new problems to the assembly of the subsequent screen components.

Fig. 2 is a diagram showing a positional relationship among a flexible screen, a flexible circuit board, and a main board in a screen assembly according to the related art. In order to better show the position relationship, fig. 2 is a schematic sectional view. As shown in fig. 2, after the assembly is completed, the connector 303 of the flexible circuit board 300 is connected to one surface of the main board 200, at this time, the main board 200 is located between the binding portion 302 and the connector 303, and in order to connect the connector 303 and the main board 200, the bent portion 301 needs to go around the side of the main board 200, and at this time, the bent portion 301 is in a bent state.

As described above, due to the requirement of testing, the bent portion 301 of the flexible circuit board 300 may have a certain length margin, and a redundant portion (the portion of the bent portion 301 in the region a in fig. 2) in the bent portion 301 may abut against the flexible screen 100, so that the flexible screen 100 is deformed by a force, and the flexible screen 100 may generate a display defect problem such as white spots due to the deformation.

In order to solve the above display failure problem, the embodiment of the present disclosure provides a screen assembly, and the following describes in detail the solution provided by the embodiment of the present disclosure with reference to fig. 3 to 11.

Fig. 3 is a schematic cross-sectional view of a screen assembly provided by an embodiment of the present disclosure. Referring to fig. 3, the screen assembly includes: the flexible screen 100, the main board 200, the flexible circuit board 300, and the first spacer 400. Fig. 4 is a diagram of a positional relationship between the flexible circuit board 300 and other components, and it should be noted that, in addition to the flexible circuit board 300 and the first spacer 400, other components such as the flexible screen 100, the main board 200, and the like are only partially shown, but this does not affect the description of the positional relationship between the components.

Referring to fig. 3 and 4, the flexible screen 100 has a back side 101, the back side 101 being the side opposite to the light exit side 102 of the flexible screen 100; the motherboard 200 has opposite first and second surfaces 201, 202, the first surface 201 facing the back surface 101; the flexible circuit board 300 is connected to the back 101 of the flexible screen 100 and the second surface 202 of the main board 200, respectively, a bent portion 301 is formed in the middle of the flexible circuit board 300, and the bent portion 301 is folded from a side of the main board 200 to the second surface 202 of the main board 200.

The first pad 400 is located between a first portion of the bending part 301 and the flexible screen 100, and the first portion of the bending part 301 is a portion of the bending part 301 located between the flexible screen 100 and the main board 200.

In the embodiment of the disclosure, the main board is connected with the flexible screen through the flexible circuit board, so that the main board can drive the flexible screen. The middle part of flexible circuit board is the kink, make the flexible circuit board can turn over the second surface and the mainboard connection that turn over to the mainboard through the side of mainboard through the kink, because the kink of flexible circuit board can have certain surplus because the needs design of lighting test, consequently in order to avoid the kink in redundant part to support and lean on the flexible screen, set up first cushion between kink and flexible screen, support the kink through first cushion for the surplus of kink can't support again and lean on the flexible screen. Therefore, the stress deformation of the flexible screen is avoided, the poor display problems such as white spots and the like caused by deformation of the flexible screen are avoided, and the display effect of the flexible screen in the screen assembly is improved.

Referring to fig. 3 and 4 again, the flexible circuit board 300 further includes a binding portion 302 and a connector 303 in addition to the bending portion 301, the binding portion 302 is located on the back surface 101 of the flexible screen 100, the binding portion 302 is connected to the flexible screen 100, the connector 303 is located on the second surface 202 of the main board 200, the connector 303 is connected to the main board 200, and the bending portion 301 is connected to the binding portion 302 and the connector 303 respectively.

In the embodiment of the present disclosure, the first pad 400 is connected to at least one of the first portion of the bending part 301 and the flexible screen 100.

Illustratively, the first pads 400 are respectively connected to the first portions of the bending portions 301 and the flexible screen 100.

Illustratively, the flexible screen 100 is an organic light emitting Diode (organic light emitting Diode) display screen.

Illustratively, the main Board 200 is a Printed Circuit Board (PCB) on which electrical components required for various screen assemblies, such as a processor, a memory, and the like, may be integrated.

As described above, the first spacer 400 can be positioned by connecting the first spacer 400 to at least one of the flexible screen 100 and the flexible circuit board 300, thereby supporting the bent portion of the flexible circuit board 300.

Illustratively, the first spacer 400 is connected to the flexible screen 100 and the flexible circuit board 300, respectively.

In order to ensure the supporting effect of the first spacer 400 and simultaneously reduce the force transmitted from the bending part 301 of the flexible circuit board 300 to the flexible screen, the first spacer 400 is a flexible spacer.

For example, the first pad 400 is a double-sided tape pad or a foam pad. When the double-sided adhesive tape cushion block is adopted, the double-sided adhesive tape cushion block can be directly bonded with the flexible screen 100 and the flexible circuit board 300 besides ensuring that the first cushion block has flexibility. When the foam cushion block is used, the foam cushion block may be bonded to one of the flexible screen 100 and the flexible circuit board 300 by glue.

Fig. 5 is a schematic cross-sectional view of a screen assembly provided by an embodiment of the present disclosure. Referring to fig. 5, the screen assembly is different from fig. 3 and 4 in that it further includes a middle frame 500 and a second mat 600. Fig. 6 is a diagram of a positional relationship between the flexible circuit board 300 and other components, and it should be noted that, in addition to the flexible circuit board 300 and the first and second pads 400 and 600, other components such as the flexible screen 100, the main board 200, the middle frame 500, and the like are only partially shown, but this does not affect the description of the positional relationship between the components.

As shown in fig. 5 and 6, the middle frame 500 has a rim 501 and a front case 502, an edge of the front case 502 is connected to an inner wall of the rim 501, and the front case 502 is located between the binding portion 302 of the flexible circuit board 300 and the main board 200; the edge of the front case 502 has a through hole 5021, and the middle of the bent portion 301 is located in the through hole 5021.

The second spacer 600 is located in the through hole 5021, the second spacer 600 is located between the inner concave surface of the bent portion 301 and the front case 502, and the second spacer 600 is connected to at least one of the bent portion 301 and the front case 502.

In this implementation, through setting up the center, preceding shell in the center can play the positioning action to mainboard, flexible screen etc. and frame in the center can protect components and parts such as screen, mainboard among the screen pack. In order to facilitate the routing of the flexible circuit board, a through hole is formed in the edge of the front shell and is used for the bent part of the flexible circuit board to pass through. Generally, in order to facilitate the flexible circuit board to pass through the through hole, the size of the through hole is designed to be large. At this moment, increase the second cushion between the interior concave surface of kink and preceding shell for flexible circuit board's kink is closer to the frame, thereby carries to the part that is located the kink between first cushion and the preceding shell and draws, and then further reduces the kink and to the extrusion of flexible screen, guarantees the display effect of flexible screen.

Fig. 7 is a schematic structural diagram of a middle frame according to an embodiment of the present disclosure. Referring to fig. 7, the middle frame 501 is a rectangular frame structure, which can ensure that the flexible screen 100 of fig. 1 is embedded therein. The front case 502 is a plate-shaped structure, one side of which is used to fix the motherboard 200, and the other side of which is connected to the flexible panel 100 (the connection structure between the two is not shown). The through hole 5021 is located at a side edge of the front case 502.

Similar to the design of the first head block 400, the second head block 600 is also designed as a flexible head block, such as a double-sided tape head block or a foam head block.

The thickness of the second spacer 600 is equal to the thickness of the front case 502 in a direction perpendicular to the rear surface 101 of the flexible screen 100, i.e., a direction B (a direction perpendicular to the paper surface in fig. 1) in the drawing, and the width of the second spacer 600 ranges from 0.5 mm to 0.7 mm in a width direction of the flexible screen 100, i.e., a row direction of the flexible screen, i.e., a direction C (a direction from left to right in fig. 1) in the drawing. In the length direction of the flexible screen 100, that is, the column direction of the flexible screen, direction D in the drawing (direction from top to bottom in fig. 1), the length of the second spacer 600 is equal to the length of the through hole 5021 in the direction.

Illustratively, the width of the second spacer 600 is 0.7 mm.

Fig. 8 is a schematic cross-sectional view of a screen assembly provided by an embodiment of the present disclosure. Referring to fig. 8, the screen assembly is different from fig. 5 and 6 in that it further includes a flexible circuit board adhesive 700. Fig. 9 is a diagram of a positional relationship between the flexible circuit board 300 and other components, and it should be noted that, in addition to the flexible circuit board 300 and the first and second spacers 400 and 600, other components such as the flexible screen 100, the main board 200, the middle frame 500, the flexible circuit board adhesive 700, and the like are only partially shown, but this does not affect the description of the positional relationship between the components.

As shown in fig. 8 and 9, in a direction perpendicular to the rear surface 100 of the flexible screen 100, the thickness H1 of the binding portion 302 is greater than the thickness H2 of the folding portion 301. Since the surfaces of the bending portion 301 and the binding portion 302 facing the main board 200 are flush, and the thickness of the bending portion 301 is smaller than that of the binding portion 302, the bending portion 301 faces the flexible screen 100 in a suspended manner, so that the bending portion 301 can abut against the flexible screen due to the redundant portion as shown in fig. 2.

The flexible circuit board adhesive 700 is located between the binding portion 302 of the flexible circuit board 300 and the flexible screen 100, and the flexible circuit board adhesive 700 is respectively bonded to the flexible circuit board 300 and the flexible screen 100. The flexible circuit board adhesive 700 serves to fix the binding portion of the flexible circuit board 300 and the flexible screen 100.

The binding portion 302 of the flexible circuit board 300 has a bar shape, and the length direction of the binding portion 302 is the same as the width direction of the flexible screen 100.

The thickness H3 of the first pad 400 is equal to the difference between the sum of the thickness H1 of the binding part 302 and the thickness H4 of the flexible circuit board adhesive 700 and the thickness H2 of the bending part 301. The thickness H3 referred to above can refer to the natural thickness of the flexible pad, or the compressed thickness of the flexible pad, if the first pad 400 is a flexible pad.

Referring to fig. 9, the length of the first spacer 400 is equal to the width of the bent portion 301 of the flexible circuit board 300 in the length direction of the flexible screen 100, and the width of the first spacer 400 ranges from 7 mm to 10 mm in the width direction of the flexible screen 100.

Illustratively, the width of the first spacer 400 is 7 millimeters.

The first cushion block 400 is designed according to the size, so that the first cushion block 400 can play a role in supporting the flexible circuit board 300, and meanwhile, the size of the first cushion block 400 is not too large, and the assembly of the whole screen assembly is not affected.

Fig. 10 is a schematic cross-sectional view of a screen assembly provided by an embodiment of the present disclosure. Referring to fig. 10, the screen assembly is different from fig. 8 and 9 in that it further includes a cover plate 800 and a rear case 900. Fig. 11 is a diagram of a positional relationship between the flexible circuit board 300 and other components, and it should be noted that, in addition to the flexible circuit board 300 and the first and second spacers 400 and 600, other components such as the flexible screen 100, the main board 200, the middle frame 500, the flexible circuit board adhesive 700, the cover plate 800, and the rear case 900 are only partially shown, but this does not affect the description of the positional relationship between the components.

The cover 800 is located on a light emitting surface of the flexible screen 100, and the cover 800 is used to protect the flexible screen 100.

To ensure the display of the flexible screen 100, the cover 800 is typically a transparent cover, such as a glass cover or a plastic cover.

The rear case 900 is located on the second surface of the main board 200, and the rear case 900 is used to protect the main board 200 and the like.

The cover plate 800, the rear case 900 and the rim 501 of the middle frame 500 cooperate with each other to form a box, i.e., a housing of the entire screen assembly.

The embodiment of the present disclosure also provides a terminal device, which includes a screen assembly as shown in any one of fig. 3 to 11.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (11)

1. A screen assembly comprising a flexible screen (100), a main board (200), a flexible circuit board (300), and a first spacer (400);

the main board (200) has a first surface (201) and a second surface (202) opposite to each other, the first surface (201) faces the back surface (101) of the flexible screen (100);

the flexible circuit board (300) is respectively connected with the back surface (101) of the flexible screen (100) and the second surface (202) of the main board (200), the middle part of the flexible circuit board (300) is a bent part (301), and the bent part (301) is folded from the side edge of the main board (200) to the second surface (202) of the main board (200);

the first cushion block (400) is located between a first part of the bending part (301) and the flexible screen (100), and the first part of the bending part (301) is the part of the bending part (301) located between the flexible screen (100) and the main board (200).

2. A screen assembly according to claim 1, wherein the first spacer (400) is connected to the first portion of the bend (301) and the flexible screen (100), respectively.

3. A screen assembly according to claim 1, wherein the flexible circuit board (300) further has a binding portion (302), the binding portion (302) being connected with the back side (101) of the flexible screen (100);

the screen assembly further comprises a middle frame (500) and a second spacer block (600);

the middle frame (500) is provided with a frame (501) and a front shell (502), the edge of the front shell (502) is connected with the inner wall of the frame (501), and the front shell (502) is positioned between the binding part (302) of the flexible circuit board (300) and the mainboard (200); the edge of the front shell (502) is provided with a through hole (5021), and the middle part of the bent part (301) is positioned in the through hole (5021);

the second cushion block (600) is located in the through hole (5021), and the second cushion block (600) is located between the inner concave face of the bent portion (301) and the front shell (502).

4. A screen assembly according to claim 3, wherein the thickness of the second spacer (600) is equal to the thickness of the front shell (502) in a direction perpendicular to the rear face (101) of the flexible screen (100).

5. A screen assembly according to claim 3, wherein the width of the second spacer (600) in the width direction of the flexible screen (100) is in the range of 0.5 mm to 0.7 mm;

in the length direction of the flexible screen (100), the length of the second cushion block (600) is equal to that of the through hole (5021).

6. A screen assembly as recited in claim 3, further comprising a flexible circuit board adhesive (700);

the flexible circuit board back adhesive (700) is positioned between the binding part (302) of the flexible circuit board (300) and the flexible screen (100), and the flexible circuit board back adhesive (700) is respectively bonded with the flexible circuit board (300) and the flexible screen (100);

in the direction of perpendicular to back (101) of flexible screen (100), the thickness of portion of tying (302) is greater than the thickness of kink (301), the thickness of first cushion (400) equals the difference of the thickness sum of portion of tying (302) and flexible circuit board gum (700) with the thickness of kink (301).

7. The screen assembly according to any one of claims 1 to 6, wherein the binding portion (302) of the flexible circuit board (300) is elongated, and a length direction of the binding portion (302) is the same as a width direction of the flexible screen (100);

in the length direction of the flexible screen (100), the length of the first cushion block (400) is equal to the width of the bending part (301) of the flexible circuit board (300), and in the width direction of the flexible screen (100), the width range of the first cushion block (400) is 7-10 mm.

8. A screen assembly according to any one of claims 3 to 6, wherein at least one of the first spacer (400) and the second spacer (600) is a flexible spacer.

9. The screen assembly of claim 8, wherein the first tile (400) is a double-sided adhesive tile.

10. A screen assembly according to claim 8, wherein the second spacer (600) is a foam spacer.

11. A terminal device, characterized in that it comprises a screen assembly according to any one of claims 1 to 10.

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