CN109151122B

CN109151122B - Display screen assembly, electronic equipment and assembling method of display screen assembly

Info

Publication number: CN109151122B
Application number: CN201811243898.XA
Authority: CN
Inventors: 刘求文; 杨金胜
Original assignee: Oppo Chongqing Intelligent Technology Co Ltd
Current assignee: Oppo Chongqing Intelligent Technology Co Ltd
Priority date: 2018-10-24
Filing date: 2018-10-24
Publication date: 2020-10-09
Anticipated expiration: 2038-10-24
Also published as: CN109151122A

Abstract

The embodiment of the application provides a display screen assembly, electronic equipment and an assembling method of the display screen assembly, wherein the display screen assembly comprises: the display device comprises a middle frame, a display module, a flexible circuit board and a conductive piece, wherein the middle frame is provided with a first surface and a second surface which are arranged oppositely, and the middle frame comprises a through hole which penetrates through the middle frame from the first surface to the second surface; the frame is provided with a third surface and a fourth surface which are arranged oppositely; the display module is arranged on the fourth surface and used for displaying; one end of the flexible circuit board is electrically connected with the display module, and the other end of the flexible circuit board can penetrate through the through hole and extend into the second surface; and a conductive member is arranged on the flexible circuit board, and the conductive member can pass through the through hole to connect the frame and the middle frame, so that the frame is grounded. The embodiment of the application can improve the performance of the display module in the display screen assembly.

Description

Display screen assembly, electronic equipment and assembling method of display screen assembly

Technical Field

The present disclosure relates to the field of electronic technologies, and in particular, to a display screen assembly, an electronic device, and an assembling method of the display screen assembly.

Background

With the development of communication technology, electronic devices such as smart phones are becoming more and more popular. In the using process of the electronic equipment, the electronic equipment can display the picture by using the display screen of the electronic equipment.

In the related art, a display screen of an electronic device is fixed on a middle frame of the electronic device through a metal frame, and the metal frame of the display screen interferes with functions of the display screen, such as a touch function and a display function.

Disclosure of Invention

The embodiment of the application provides a display screen assembly, electronic equipment and an assembling method of the display screen assembly, and the performance of a display module in the display screen assembly can be improved.

The embodiment of the application provides a display screen subassembly, the display screen subassembly includes:

the middle frame is provided with a first surface and a second surface which are arranged oppositely, and the middle frame comprises a through hole which penetrates through the middle frame from the first surface to the second surface;

a frame having a third face and a fourth face disposed oppositely;

the display module is arranged on the fourth surface and used for displaying;

one end of the flexible circuit board is electrically connected with the display module, and the other end of the flexible circuit board can penetrate through the through hole and extend into the second surface;

and the conductive piece is arranged on the flexible circuit board and can penetrate through the through hole to connect the frame and the middle frame, so that the frame is grounded.

The embodiment of the application provides an electronic equipment, including display screen subassembly and mainboard, the display screen subassembly be as above the display screen subassembly, the mainboard sets up the second face of center, the mainboard with flexible circuit board electric connection, the mainboard is used for control the display module assembly shows.

The embodiment of the application provides an assembling method of a display screen assembly, which comprises the following steps:

providing a middle frame, a display module, a frame and a flexible circuit board; the middle frame is provided with a first surface and a second surface which are arranged oppositely, and the middle frame comprises a through hole which penetrates through the middle frame from the first surface to the second surface; the frame is provided with a third surface and a fourth surface which are arranged oppositely; the display module is arranged on the fourth surface; one end of the flexible circuit board is electrically connected with the display module;

arranging a conductive piece on the flexible circuit board;

fixing a portion of the conductive member and a portion of the flexible circuit board to the fourth surface, with the portion of the conductive member being connected between the fourth surface and the portion of the flexible circuit board;

and passing another part of the conductive member and another part of the flexible circuit board through the through hole from the first surface, fixing the another part of the conductive member and the another part of the flexible circuit board on the second surface, and connecting the another part of the conductive member between the second surface and the another part of the flexible circuit board, so that the frame is connected with the middle frame through the conductive member.

In the embodiment of the application, the frame and the middle frame are connected through the conductive piece, so that the frame can be grounded, the interference of the frame on the display module can be reduced, and the performance of the display module is improved. And this application embodiment sets up the through-hole position at the center with electrically conductive, can reduce electrically conductive occupy the space between frame and the center, reduces electrically conductive influence to display module assembly, promotes display module assembly's performance.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

FIG. 2 is a first cross-sectional view of the display screen assembly of the electronic device of FIG. 1 taken along the direction P1-P1.

FIG. 3 is a cross-sectional view of the display screen assembly of the electronic device of FIG. 1 taken along the line P2-P2.

FIG. 4 is a second cross-sectional view of the display screen assembly of the electronic device of FIG. 1 taken along the direction P1-P1.

FIG. 5 is a third cross-sectional view of the display screen assembly of the electronic device of FIG. 1 taken along the direction P1-P1.

Fig. 6 is a flowchart illustrating an assembly method of a display screen assembly in an electronic device according to an embodiment of the present application.

Detailed Description

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. An electronic device, such as electronic device 10 of fig. 1, may include a display screen assembly, such as display screen assembly 20, and a motherboard, such as motherboard 16.

The electronic device 10 may be a computing device such as a laptop computer, a computer monitor containing an embedded computer, a tablet computer, a cellular telephone, a media player, or other handheld or portable electronic devices, smaller devices such as a wrist-watch device, a hanging device, a headset or earpiece device, a device embedded in eyeglasses, or other device worn on the head of a user, or other wearable or miniature devices, a television, a computer display not containing an embedded computer, a gaming device, a navigation device, an embedded system such as a system in which an electronic device with a display is installed in a kiosk or automobile, a device that implements the functionality of two or more of these devices, or other electronic devices. In the exemplary configuration of fig. 1, the electronic device 10 is a portable device, such as a cellular telephone, media player, tablet computer, or other portable computing device. Other configurations may be used for the electronic device 10, if desired. The example of fig. 1 is merely exemplary.

The display screen assembly 20 may include, among other things, a display such as display 14 and a middle frame such as middle frame 12. The display 14 may be mounted in the center frame 12. The middle frame 12 may be formed from plastic, glass, ceramic, fiber composite, metal (e.g., stainless steel, aluminum, etc.), other suitable materials, or a combination of any two or more of these materials. The housing 12 may be formed using a one-piece configuration in which some or all of the housing 12 is machined or molded as a single structure, or may be formed using multiple structures (e.g., an inner frame structure, one or more structures that form an exterior housing surface, etc.). In some embodiments, the bezel 12 may form the overall ground for the electronic device 10.

Display 14 may be a touch screen display incorporating conductive capacitive touch sensor electrode layers or other touch sensor components (e.g., resistive touch sensor components, acoustic touch sensor components, force-based touch sensor components, light-based touch sensor components, etc.), or may be a non-touch sensitive display. Capacitive touch screen electrodes may be formed from an array of indium tin oxide pads or other transparent conductive structures.

Display 14 may include an array of display pixels formed from Liquid Crystal Display (LCD) components, an electrophoretic display pixel array, a plasma display pixel array, an organic light emitting diode display pixel array, an electrowetting display pixel array, or display pixels based on other display technologies.

Display 14 may be protected using a display cover layer such as a transparent glass layer, light-transmissive plastic, sapphire, or other transparent dielectric layer. An opening may be formed in the display cover layer. For example, openings may be formed in the display cover layer to accommodate buttons, such as push buttons. Openings may also be formed in the display cover layer to accommodate ports such as speaker ports. Openings may be formed in the housing 12 to form communication ports (e.g., audio jack ports, digital data ports, etc.). Openings in the housing 12 may also be formed for audio components such as speakers and/or microphones.

Referring to fig. 2, fig. 2 is a first cross-sectional view of the display screen assembly of the electronic device shown in fig. 1 along the direction P1-P1. The display screen assembly 20 may include a bezel 12, a display module such as display module 142, a frame such as frame 144, and a flexible circuit board such as flexible circuit board 146. The display 14 in the screen assembly 20 may include, among other things, a display module such as display module 142, a frame such as frame 144, and a flexible circuit board such as flexible circuit board 146. The display module 142 can be used for displaying images, the frame 144 can be used as a carrier of the display module 142, and the flexible circuit board 146 can be used for electrically connecting the main board 16 and the display module 142.

As shown in fig. 2, the bezel 12 has oppositely disposed first sides, such as first side 122, and second sides, such as second side 124. The display module 142 and the frame 144 can be disposed on the first surface 122 of the middle frame 12, and the main board 16 can be disposed on the second surface 124 of the middle frame 12. The middle frame 12 includes a through hole 126 penetrating the middle frame 12 from the first face 122 toward the second face 124, or the middle frame 12 is provided with a through hole 126 penetrating the middle frame 12 in its thickness direction. The through hole 126 can be closed to the flexible circuit board 146, one end of the flexible circuit board 146 is electrically connected with the display module 142, and the flexible circuit board 146 penetrates through the through hole 126 and is electrically connected with the main board 16 through the other end of the flexible circuit board 146, so that the display module 142 is electrically connected with the main board 16.

As shown in fig. 2, the frame 144 has oppositely disposed third, such as third, 1442 and fourth, such as fourth, 1444 faces. Wherein the fourth surface 1444 of the frame 144 may abut the first surface 122 of the middle frame 12. The third face 1442 of the frame 144 can be used for carrying the display module 142, or the display module 142 is disposed on the third face 1442 of the frame 144. In some embodiments, the frame 144 may be a metallic material, such as stainless steel, aluminum, or the like.

As shown in fig. 2, the flexible circuit board 146 includes a first section 1462, a second section 1464, and a third section 1466 connected in series. The first section 1462 of the flexible circuit board 146 may be disposed on the second side 124 of the middle frame 12, and an end of the first section 1462 may be electrically connected to the motherboard 16. The second section 1464 of the flexible circuit board 146 may be disposed within the through-hole 126 and an outer surface of the second section 1464 of the flexible circuit board 146 may be attached to a portion of a sidewall of the through-hole 126. The third section 1466 of the flexible circuit board 146 may be disposed on the fourth surface 14444 of the frame 144, and an end of the third section 1466 may be electrically connected to the display module 142 by bypassing an edge of the frame 144.

It should be noted that the display module 142 is electrically connected to the motherboard 16 through the flexible circuit board 146 to display an image, and the frame 144 interferes with the display of the display module 142 during the process of displaying the image by the display module 142. Thereby affecting the quality of the display image displayed by the display module 142.

To this end, embodiments of the present application may ground the frame 144, such as by connecting the frame 144 to the middle frame 12. The middle frame 12 is used as the whole ground of the electronic device 10, and the frame 144 is connected with the middle frame 12, so that the frame 144 can be grounded.

Referring to fig. 3, fig. 3 is a cross-sectional view of the display screen assembly of the electronic device shown in fig. 1 taken along the direction P2-P2. The display screen assembly 20 may also include conductive foam, such as conductive foam 148. The conductive foam 148 is arranged between the middle frame 12 and the frame 144, and the middle frame 12 and the frame 144 are connected through the conductive foam 148. The first surface 122 of the middle frame 12 is connected to the fourth surface 1444 of the frame 144 via the conductive foam 148. The conductive foam 148 may be a foam material having conductive properties to ground the frame 144. The conductive foam 148 may have a strip structure, and the conductive foam 148 may have one, two or more strips. When there are two pieces of the conductive foam 148, the two pieces of the conductive foam can be respectively adjacent to two opposite edges of the middle frame 12.

It should be noted that, in order to prevent the conductive foam 148 from occupying too much space due to being too thick, and to prevent the display module 142 from being acted by force due to the too thick conductive foam 148, which causes the display module 142 to have abnormal white spots. The thickness of the conductive foam 148 may be set to be less than 0.05mm, such as 0.05mm, 0.048mm, etc. for example, the thickness of the conductive foam 148 is set to be 0.05 mm. The thickness of the conductive foam 148 may be a distance between the first surface 122 of the frame 12 and the fourth surface 1444 of the frame 144 at the position where the conductive foam 148 is disposed.

It should be noted that when the thickness of the conductive foam 148 is less than 0.05mm, the stability of the connection between the frame 144 and the middle frame 12 is reduced, and the frame 144 and the middle frame 12 are in poor contact.

Referring to fig. 4, fig. 4 is a second cross-sectional view of the display screen assembly of the electronic device shown in fig. 1 along the direction P1-P1. Display screen assembly 20 may also include a conductive member such as conductive member 141, with conductive member 141 being a conductive material. The conductive member 141 may be a conductive cloth. One surface of the conductive member 141 may be adhered to the flexible circuit board 146 by conductive glue.

In some embodiments, conductive element 141 includes a first portion 1411, a second portion 1412, and a third portion 1413. First portion 1411 of conductive element 141 is adhered to first section 1462 of flexible circuit board 146 by conductive glue, second portion 1412 of conductive element 141 is adhered to second section 1464 of flexible circuit board 146 by conductive glue, and third portion 1413 of conductive element 141 is adhered to third section 1466 of flexible circuit board 146 by conductive glue.

The other side of the conductive member 141 may connect the frame 144 and the middle frame 12 such that the frame 144 is grounded. In some embodiments, first portion 1411 of conductive element 141 is coupled to second side 124 of middle frame 12 by conductive glue, i.e., first portion 1411 of conductive element 141 is coupled between first section 1462 of flexible circuit board 146 and second side 124 of middle frame 12 by conductive glue. Second portion 1412 of conductor 141 is connected to the sidewall around via 126 by conductive glue, i.e., second portion 1412 of conductor 141 is connected between the sidewall of via 126 and second section 1464 of flexible circuit board 146 by conductive glue. Third portion 1413 of conductive element 141 is connected to fourth face 1444 of frame 144 by conductive glue, i.e., third portion 1413 of conductive element 141 is connected between third section 1466 of flexible circuit board 146 and fourth face 1444 of frame 144 by conductive glue. The frame 144 is connected to the middle frame 12 through the conductive member 141, so that the frame 144 is grounded, and the interference of the frame 144 to the display module 142 can be reduced.

Wherein the connection locations of the first and

second segments

1462, 1464 can be perpendicular to each other and the connection locations of the second and

third segments

1464, 1466 can be perpendicular to each other. Wherein, the connection positions of the first portion 1411 and the second portion 1412 may be perpendicular to each other, and the connection positions of the second portion 1412 and the third portion 1413 may be perpendicular to each other. The connection locations of the first and

second segments

1462, 1464 may be angularly disposed relative to one another, and the connection locations of the second and

third segments

1464, 1466 may be angularly disposed relative to one another. Wherein, the connection positions of the first portion 1411 and the second portion 1412 may be disposed to be inclined to each other, and the connection positions of the second portion 1412 and the third portion 1413 may be disposed to be inclined to each other. Such as: the conductive member 141 has a Z-shaped structure.

In some embodiments, the length of first portion 1411 of conductive element 141 is less than the length of first segment 1462 of flexible circuit board 146, and the length of third portion 1413 of conductive element 141 is less than the length of third segment 1466 of flexible circuit board 146.

Referring to fig. 5, fig. 5 is a third cross-sectional view of the display screen assembly of the electronic device shown in fig. 1 along the direction P1-P1. The connection location of the first and

second segments

1462, 1464 can be an arcuate configuration and the connection location of the second and

third segments

1464, 1466 can be an arcuate configuration. The connection position of the first portion 1411 and the second portion 1412 may be an arc-shaped structure, and the connection position of the second portion 1412 and the third portion 1413 may be an arc-shaped structure.

It should be noted that second portion 1412 of conductive element 141 may be connected to a portion of the sidewall of through-hole 126. Second portion 1412 of conductor 141 may also be unconnected to the sidewalls of via 126.

The conductive member 141 is connected to the second surface 124 of the middle frame 12 and the fourth surface 1444 of the frame 144 through different positions of the flexible circuit board 146, so that the connection stability is high, the frame 144 can be connected to the middle frame 12, the frame 144 is grounded, and interference of the frame 144 on the display module 142 is reduced. The connection stability of the conductive member 141 is high, and the thickness of the conductive member 141 may be limited to 0.03mm to 0.04mm, that is, the thickness of the conductive member 141 is 0.03mm to 0.04 mm. The thickness of the conductive member 141 may be 0.032mm, 0.035mm, 0.037mm, 0.04mm, etc. Therefore, the embodiment of the application can not only reduce the thickness of the conductive element 141, but also prevent the display module 142 from being influenced by the excessive acting force generated by the conductive element 141 on the display module 142. In addition, the embodiment of the application can also increase the grounding stability of the frame 144 through the conductive member 141, and reduce the interference of the frame 144 to the display module 142.

It should be noted that, when the flexible circuit board 146 is assembled, the conductive member 141 may be adhered to the flexible circuit board 146, and when the flexible circuit board 146 passes through the through hole 126, the conductive member 141 may be connected to the frame 144 and the middle frame 12, respectively. In the actual process, the connection of the conductive member 141 can be completed in the process of assembling the flexible circuit board 146, and the process and cost can be saved without additionally increasing the process and production process.

For example, a first placing groove may be provided on the second surface 124 of the middle frame 12, the first placing groove may communicate with the through hole 126, and the first portion 1411 of the conductive member 141 may be placed in the first placing groove.

For example, a second placing groove may be provided on the fourth surface 1444 of the frame 144, and the third portion 1413 of the conductive member 141 may be placed in the second placing groove.

To further describe the connection manner of the conductive member 141 with the flexible circuit board 146, the middle frame 12 and the frame 144, the following description is made from the perspective of the assembly method of the display panel assembly.

Referring to fig. 6, fig. 6 is a flowchart illustrating an assembly method of a display screen assembly in an electronic device according to an embodiment of the present disclosure. The display screen assembly can refer to fig. 4 and 5. The assembling method of the display screen assembly comprises the following steps:

101, providing a middle frame, a display module, a frame and a flexible circuit board.

The middle frame is provided with a first surface and a second surface which are arranged oppositely, and the middle frame comprises a through hole which penetrates through the middle frame from the first surface to the second surface. The middle frame can refer to the middle frame 12, and is not described in detail here.

Wherein the frame has a third face and a fourth face which are oppositely arranged. The frame can be referred to the above frame 144, and is not described herein.

Wherein, the display module is arranged on the fourth surface. The display module can refer to the display module 142, and is not described herein again.

Wherein, one end of the flexible circuit board is electrically connected with the display module. The flexible circuit board can be referred to the flexible circuit board 146, and is not described herein again.

102, a conductive member is disposed on the flexible circuit board.

The conductive piece has a conductive characteristic, conductive cloth can be adopted as the conductive piece, and the conductive cloth can be adhered to the flexible circuit board through conductive glue. The conductive elements may refer to the above details, and are not described herein again.

103, a part of the conductive member and a part of the flexible circuit board are fixed on the fourth surface, and a part of the conductive member is connected between the fourth surface and a part of the flexible circuit board.

The third part of the conductive member is disposed between the fourth surface and the third section of the flexible circuit board through the conductive glue, which can be referred to above specifically, and is not described herein again.

And 104, penetrating the other part of the conductive piece and the other part of the flexible circuit board from the first surface through the through hole, fixing the other part of the conductive piece and the other part of the flexible circuit board on the second surface, and connecting the other part of the conductive piece between the second surface and the other part of the flexible circuit board, so that the frame is connected with the middle frame through the conductive piece.

The first portion of the conductive member is disposed between the second surface and the first section of the flexible circuit board through the conductive glue, which is not described herein.

In the process of assembling the display screen assembly, the conductive piece is bonded on the flexible circuit board, so that the operation is simple, and the process and the cost are saved.

The display screen assembly, the electronic device and the assembling method of the display screen assembly provided by the embodiment of the application are described in detail above. The principles and implementations of the present application are described herein using specific examples, which are presented only to aid in understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A display screen assembly, the display screen assembly comprising:

the frame is provided with a third surface and a fourth surface which are arranged oppositely, conductive foam is arranged between the fourth surface and the first surface, the conductive foam enables the frame to be grounded, and the frame is a metal frame;

the display module is arranged on the third surface and used for displaying;

2. The display screen assembly of claim 1, wherein the flexible circuit board includes a first section disposed on the second face, a second section disposed within the through hole, and a third section disposed on the fourth face, and wherein the conductive member includes a first portion connected between the first section and the second face, a second portion disposed within the through hole, and a third portion connected between the third section and the fourth face.

3. A display screen assembly according to claim 2, wherein the second portion is connected between a side wall of the through-hole and the second section.

4. The display screen assembly of claim 2, wherein the connection location of the first segment and the second segment is an arc-shaped configuration, the connection location of the second segment and the third segment is an arc-shaped configuration, the connection location of the first portion and the second portion is an arc-shaped configuration, and the connection location of the second portion and the third portion is an arc-shaped configuration.

5. The display screen assembly of claim 2, wherein the conductive member is Z-shaped.

6. The display screen assembly of claim 2, wherein the first portion has a length less than a length of the first segment and the third portion has a length less than a length of the third segment.

7. The display screen assembly of claim 2, wherein the middle frame is provided with a first placement groove for placing the first portion, the first placement groove being formed at the second face, the first placement groove communicating with the through hole.

8. A display screen assembly according to claim 2, wherein the frame is provided with a second placement groove formed in the fourth face for placement of the third portion.

9. The display screen assembly of any of claims 2 to 8, wherein the conductive member comprises conductive cloth, and the conductive cloth is connected to the middle frame and the frame by conductive glue.

10. The display screen assembly of claim 9, wherein the conductive cloth is connected to the flexible circuit board by a conductive adhesive.

11. A display screen assembly according to any of claims 2 to 8, wherein the conductive member has a thickness of from 0.03mm to 0.04 mm.

12. An electronic device, comprising a display screen assembly and a motherboard, wherein the display screen assembly is the display screen assembly according to any one of claims 1 to 11, the motherboard is disposed on the second surface of the middle frame, the motherboard is electrically connected to the flexible circuit board, and the motherboard is configured to control the display module to display.

13. A method of assembling a display screen assembly, comprising:

providing a middle frame, a display module, a frame and a flexible circuit board; the middle frame is provided with a first surface and a second surface which are arranged oppositely, and the middle frame comprises a through hole which penetrates through the middle frame from the first surface to the second surface; the frame is provided with a third surface and a fourth surface which are arranged oppositely, and the frame is a metal frame; the display module is arranged on the third surface; one end of the flexible circuit board is electrically connected with the display module;

a piece of conductive foam is arranged between the fourth surface and the first surface, and the frame is grounded through the conductive foam;

arranging a conductive piece on the flexible circuit board;