CN111984067A

CN111984067A - Display device

Info

Publication number: CN111984067A
Application number: CN202010894653.4A
Authority: CN
Inventors: 孙拓; 张硕; 梁魁
Original assignee: BOE Technology Group Co Ltd; Beijing BOE Technology Development Co Ltd
Current assignee: BOE Technology Group Co Ltd; Beijing BOE Technology Development Co Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2020-11-24
Anticipated expiration: 2040-08-31
Also published as: CN111984067B

Abstract

The invention relates to the technical field of display, and discloses a display device, wherein a first display assembly and a second display assembly are connected through an elastic connecting piece to realize elastic connection, so that the display device can be switched between a folded state and an unfolded state, and when the display device is in the folded state, display screens in the first display assembly and the second display assembly do not deform but deform through an elastic electric connecting part in the elastic connecting piece, so that the display screens in the first display assembly and the second display assembly can avoid larger stress generated by folding.

Description

Display device

Technical Field

The invention relates to the technical field of display, in particular to a display device.

Background

Part of the functionality of Lap Top PCs (notebook computers) has turned to productivity applications. Various manufacturers expand the application of the Lap Top PC in the aspects of image processing/design business/data processing and the like through 3:2 screen design, introduction of high-performance devices and the like.

Due to the requirements of the PC on size and portability, the screen cannot be made very large, and under the condition of not influencing the portability, 15.6-16 inch reaches the limit. However, they are still insufficient in design and image processing.

In order to simultaneously consider larger display area and portability, some manufacturers have designed folding screen notebooks, which have great advantages in terms of multitasking.

However, in the existing folding screen notebook, the two folded display screens are integrated, and the folding position of the display screen bears larger stress, so that the reliability is poorer.

Disclosure of Invention

The invention discloses a display device, which is used for avoiding a display screen when the display device is folded.

In order to achieve the purpose, the invention provides the following technical scheme:

the application provides a display device, this display device includes: the display device comprises a first display assembly, a second display assembly and an elastic connecting piece; the elastic connecting piece comprises a first electric connection part, a second electric connection part and an elastic electric connection part, the first electric connection part and the second electric connection part are electrically connected through the elastic electric connection part, the first electric connection part is electrically connected with the first display assembly, and the second electric connection part is electrically connected with the second display assembly; when the display device is in a folded state, the light-emitting surface of the first display assembly is opposite to the light-emitting surface of the second display assembly; when the display device is in the unfolded state, the light-emitting surface of the first display assembly and the light-emitting surface of the second display assembly face to the same direction.

In above-mentioned display device, first display module and second display module pass through elastic connection spare to be connected and realize elastic connection, therefore, display device can switch between fold condition and expansion state to, when display device is in fold condition, the display screen among first display module and the second display module does not take place to warp, but takes place to warp through the elastic electrical connection portion among the elastic connection spare, consequently, the display screen among first display module and the second display module all can avoid because of the great stress of folding production. In addition, the elastic connecting piece electrically connects the first display assembly and the second display assembly, and the coordinated communication between the first display assembly and the second display assembly can be realized.

Optionally, the resilient electrical connection has a redundant structure.

Optionally, the bent portion of the redundant structure is a rounded corner structure.

Optionally, the redundant structure further comprises a straight line segment connected between adjacent rounded corner structures.

Optionally, the bent part of the redundant structure is a folded angle structure.

Optionally, the redundant structure is in a "zigzag" shape.

Optionally, the redundant structure is a typing structure.

Optionally, the redundant structure is a mesh structure.

Optionally, the resilient electrical connection comprises: a third substrate; and a set of conductive lines distributed on at least one side of the third substrate;

the first electric connection part is provided with a first golden finger, the second electric connection part is provided with a second golden finger, the lead group is connected with the first golden finger and the second golden finger, the first golden finger is electrically connected with the first display assembly, and the second golden finger is electrically connected with the second display assembly.

Optionally, the first display component and/or the second display component have a touch function.

Drawings

Fig. 1 is a schematic view of a display device provided in an embodiment of the present application in a folded state;

FIG. 2 is a schematic view of the display device of FIG. 1 in an expanded state;

FIG. 3 is a schematic view of the display device of FIG. 1 in an expanded state;

FIG. 4 is a schematic view of the display device of FIG. 1 in a folded state;

FIG. 5 is a cross-sectional view taken at A1-A2 of FIG. 3;

fig. 6 is a schematic view of a display device provided in an embodiment of the present application in a notebook state when the display device is a folding screen notebook;

fig. 7 is a schematic view of a display device provided in an embodiment of the present application in an unfolded state when the display device is a folding screen notebook;

FIG. 8 is a schematic diagram of a flexible connecting member in a display device according to an embodiment of the present disclosure;

FIG. 9 is a schematic view of another flexible connector in a display device according to an embodiment of the present disclosure;

FIG. 10 is a schematic view of another flexible connector in a display device according to an embodiment of the present disclosure;

FIG. 11 is a schematic view of another flexible connector in a display device according to an embodiment of the present disclosure;

FIG. 12 is a schematic view of another flexible connector in a display device according to an embodiment of the present disclosure;

fig. 13 is a diagram illustrating a positional relationship between a first fixing member and a second fixing member in a display device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

With reference to fig. 1 to 4:

the embodiment of the present application provides a display device 01, and the display device 01 includes: a first display assembly 10, a second display assembly 20 and an elastic connector 30; the elastic connecting member 30 includes a first electrical connection portion 31, a second electrical connection portion 35, and an elastic electrical connection portion 33, the elastic electrical connection portion 33 electrically connects the first electrical connection portion 31 and the second electrical connection portion 35, the first electrical connection portion 31 is electrically connected to the first display assembly 10, and the second electrical connection portion 35 is electrically connected to the second display assembly 20;

referring to fig. 1, when the display device 01 is in a folded state, the light-emitting surface G1 of the first display element 10 is disposed opposite to the light-emitting surface G2 of the second display element 20; referring to fig. 2, when the display device 01 is in the unfolded state, the light-emitting surface G1 of the first display element 10 and the light-emitting surface G2 of the second display element 20 face the same direction (in fig. 2, the light-emitting surfaces of both faces upward).

In the above-mentioned display device 01, the first display module 10 and the second display module 20 are connected by the elastic connection member 30 to realize elastic connection, so that the display device 01 can be switched between the folded state and the unfolded state, and when the display device 01 is in the folded state, the display screens in the first display module 10 and the second display module 20 are not deformed, but are deformed by the elastic electrical connection portion 33 in the elastic connection member 30, so that the display screens in the first display module 10 and the second display module 20 can both avoid large stress generated by folding. In addition, the elastic connection member 30 electrically connects the first display assembly 10 and the second display assembly 20, and thus, the coordinated communication between the first display assembly 10 and the second display assembly 20 can be achieved.

Specifically, referring to fig. 1 and fig. 2, the first display assembly 10 includes a first display panel 11 and a first substrate 13, which are stacked, the first display panel 11 may be a panel that does not need a frame, such as an organic light-emitting diode (OLED) or a Micro LED (Micro LED), a surface of the first display panel 11 facing the first substrate 13 is provided with first pins 11i that are communicated with an internal circuit of the first display panel 11, the first substrate 13 is provided with first metal electrodes 13i, the first pins 11i and the first metal electrodes 13i may be in a one-to-one correspondence, each first metal electrode 13i is provided with a first docking pin exposed on a surface of the first substrate 13 facing the first display panel 11, and each first docking pin may be opposite to the corresponding first pin 11 i. A first conductive connector 12 is filled between the first display panel 11 and the first substrate 13, and the first conductive connector 12 may be an anisotropic conductive adhesive, a eutectic bonding or a silver paste. When the first conductive connector 12 is made of anisotropic conductive adhesive, the first conductive connector 12 can be spread out between the first display 11 and the first substrate 13 in a whole layer, and especially, the first conductive connector 12 is filled between the first pin 11i and the first butting pin of the first metal electrode 13i, so that the first pin 11i is electrically connected to the first butting pin of the first metal electrode 13 i; when the first conductive connector 12 is made of a material with a relatively high conductivity, such as eutectic bonding or silver paste, the first conductive connector 12 may be formed only between the first lead 11i and the first mating lead of the first metal electrode 13i, and an insulating paste may be formed in a region around the first mating lead of the first metal electrode 13i to electrically isolate different first metal electrodes 13 i.

Similarly, with continued reference to fig. 1 and fig. 2, the second display assembly 20 includes a second display panel 21 and a second substrate 23, which are stacked, the second display panel 21 may be a panel that does not need a frame, such as an OLED (organic light-emitting diode) or a ULED, a surface of the second display panel 21 facing the second substrate 23 is provided with a second pin 21i that is in communication with an internal circuit of the second display panel 21, the second substrate 23 has a second metal electrode 23i, the second pin 21i and the second metal electrode 23i may be in a one-to-one correspondence, each second metal electrode 23i has a second docking pin exposed on a surface of the second substrate 23 facing the second display panel 21, and each second docking pin may be opposite to the corresponding second pin 21 i. A second conductive connector 22 is filled between the second display screen 21 and the second substrate 23, and the second conductive connector 22 may be an anisotropic conductive adhesive, a eutectic bonding or a silver paste. When the second conductive connector 22 is made of anisotropic conductive adhesive, the second conductive connector 22 can be spread out between the second display screen 21 and the second substrate 23 in a whole layer, and especially, the second conductive connector 22 is filled between the second pin 21i and the second butt-joint pin of the second metal electrode 23i, so that the second pin 21i is electrically connected with the second butt-joint pin of the second metal electrode 23 i; when the second conductive connector 22 is made of a material with a relatively high conductivity, such as eutectic bonding and silver paste, the second conductive connector 22 may be formed only between the second lead 21i and the second butt-joint lead of the second metal electrode 23i, and an insulating paste may be formed in a region around the second butt-joint lead of the second metal electrode 23i to electrically isolate different second metal electrodes 23i and avoid short circuit.

The specific structure of the elastic connection member 30 can refer to fig. 3 and 4, and the elastic connection member 30 includes a first electrical connection portion 31, a second electrical connection portion 35, and an elastic electrical connection portion 33; the first electrical connection portion 31 has a first gold finger, and the second electrical connection portion 35 has a second gold finger; the first electrical connection portion 31 may further include a first circuit board 32, the second electrical connection portion 35 may further include a second circuit board 34, both the first circuit board 32 and the second circuit board 34 may be flexible circuit boards, the first electrical connection portion 31 is formed on a surface of the first circuit board 32, the first circuit board 32 serves as a carrier of the first electrical connection portion 31, the second electrical connection portion 35 is formed on a surface of the second circuit board 34, and the second circuit board 34 serves as a carrier of the second electrical connection portion 35.

Then, referring to fig. 5, the elastic electrical connection portion 33 may specifically include a third substrate 33c and a lead group (33a and 33e), wherein the lead group 33a and the lead group 33e each include a plurality of metal leads, the plurality of metal leads included in the lead group 33a are respectively connected to the first gold finger and the second gold finger, and the metal leads in the lead group 33e are similar; the lead group 33a is formed on one side of the third substrate 33c, the lead group 33e is formed on the other side of the third substrate 33c, the surface of the lead group 33a may be covered with an insulating protection layer 33b, the surface of the lead group 33e may be covered with an insulating protection layer 33d, both the insulating protection layer 33b and the insulating protection layer 33d may be polyimide, PMMA (polymethyl methacrylate), or PDMS (polydimethylsiloxane), the insulating protection layer 33b may prevent the lead group 33a from being collided, oxidized, or short-circuited between metal leads therein, and the function of the insulating protection layer 33d is similar. It should be understood that only one of the lead group 33a and the lead group 33e may be left. The third substrate 33c may be a flexible circuit board.

The first golden finger of the first electrical connection portion 31 is electrically connected with a portion of the first metal electrode 13i, which is exposed out of the surface of the first substrate 13 away from the first display screen 11, the portion of the first metal electrode 13i, which is exposed out of the first substrate 13, forms a metal slip sheet, the first golden finger is electrically connected with the metal slip sheet in a sliding fit manner, specifically, the metal slip sheet is formed on an inner wall of a slot structure, and the first golden finger is electrically connected with the metal slip sheet on the inner wall when inserted into the slot structure, so that the first golden finger is electrically connected with the first display assembly 10. The connection manner of the second golden finger of the second electrical connection portion 35 and the second metal electrode 23i may be similar, so that the second golden finger is electrically connected to the second display assembly 20, and further description is omitted.

In order to avoid that the elastic electrical connection portion 33 has a certain elasticity and can sufficiently release stress when the display device 01 is switched between the folded state and the unfolded state, and avoid breaking due to fatigue, the elastic electrical connection portion 33 may have a redundant structure. The term "redundant structure" should be understood as follows: the extension path is nonlinear, the part between the two ends is not fixed and has a certain deformation redundancy, when the display device 01 is switched between the folding state and the unfolding state, the deformation of each part of the elastic electric connection part 33 including the redundant structure can be dispersed to each part of the partial structure in the redundant structure, and the generated stress is released in the redundant structure.

There are many forms in which the elastic electrical connection portion 33 forms a redundant structure.

As shown in fig. 3 and 4, the elastic electrical connection portion 33 has a zigzag structure as a whole, and the zigzag structure forms the redundant structure. When the display device 01 is in an expanded state (fig. 2), or a notebook state, the "few" font structure is compressed (fig. 3); when the display device 01 is in a folded state (fig. 1), the zigzag structure is unfolded and the stress is released. Specifically, the elastic electric connection portion 33 includes a first segment a, a second segment b, a third segment c, a fourth segment d and a fifth segment e which are connected in sequence, the second segment b, the third segment c and the fourth segment d form a U-shaped structure, the first segment a and the second segment b are connected with one end far away from the third segment c and are bent towards the direction far away from the fourth segment d, and the fifth segment e and the fourth segment d are connected with one end far away from the third segment c and are bent towards the direction far away from the second segment b, so that the structure in the shape of a Chinese character 'ji' is formed. Wherein the length of the second segment b may be equal to the length of the fourth segment d, and the length of the fourth segment L2 is at least 2 times the length L1 of the third segment L1 to reduce the stress spread on the third segment L1; the length L1 of the third segment c is at least 1.5 times of the total thickness of the first display panel 11, the first substrate 13, the second display panel 21 and the second substrate 23 after the display device 01 is folded, so as to ensure that the third segment L1 with larger stress does not contact the sharp side of the first display panel 11, the first substrate 13, the second display panel 21 and the second substrate 23 and is damaged.

In addition to this, the redundant structure of the elastic electrical connection portion 33 can have various forms.

For example, the bending of the redundant structure of the elastic electrical connection portion 33 is a rounded structure.

Specifically, as shown in fig. 8, the redundant structure is formed by splicing a plurality of fillet structures. The fillet structure can avoid the stress from being concentrated too much.

As shown in fig. 9, the redundant structure of the elastic electrical connection portion 33 is a serpentine reciprocating structure, and the redundant structure includes a plurality of fillet structures, the openings of every two adjacent fillet structures face in opposite directions, and every two fillet structures are connected through a straight line segment. Specifically, fillet structure k1 and fillet structure k2 are connected through straight line segment v1, fillet structure k2 and fillet structure k3 are connected through straight line segment v2, fillet structure k3 and fillet structure k4 are connected through straight line segment v3, and fillet structure k4 and fillet structure k5 are connected through straight line segment v 4.

In addition, as shown in fig. 10, the bending portion of the redundant structure of the elastic electrical connection portion 33 may be a folded angle structure.

To further increase the redundancy of the various redundant structures described above, the redundant structures may be split structures. Referring specifically to fig. 11, a plurality of small U-shaped structures are connected in sequence to form one or more large U-shaped structures.

Still alternatively, as shown in fig. 12, the redundant structure of the elastic electrical connection portion 33 is a mesh structure. Due to the hollow-out parts in the net-shaped structure, the net-shaped structure can also have a certain redundancy.

In the display device 01, the first display element 10 and/or the second display element 20 have a touch function. Specifically, the first display device 10 has a touch function, and the second display device 20 has a touch function, or both the first display device 10 and the second display device 20 have a touch function.

For example, the display device 01 is exemplarily a folding screen notebook, and specifically, referring to fig. 6, the display device 01 is in a notebook state, that is, an included angle between the light emitting surface G1 of the first display screen 11 of the first display assembly 10 and the light emitting surface G2 of the second display screen 21 of the second display assembly 20 is greater than 0 degree and less than 180 degrees. The first display screen 11 and the second display screen 21 are separated by a flat axis L. At least the second display screen 21 is a touch screen.

The partial area of the first display screen 11 forms a desktop display area S1, the partial area of the second display screen S2 forms a virtual keyboard area S21 and a virtual touchpad area S22, the virtual touchpad area S22 is located on the side of the virtual keyboard area S21 away from the flat axis L, the virtual keyboard area S21 is used for inputting characters and the like, and functions similar to a physical keyboard, and the virtual touchpad area S22 is used for selecting positions similar to a mouse.

Referring to fig. 7 again, the display device 01 shown in fig. 6 is developed, the light-emitting surface G1 of the first display screen 11 and the light-emitting surface G2 of the second display screen 21 both face the same direction, and an included angle between the two surfaces may be 180 degrees, the first display screen 11 has a first display area S1, the second display screen 12 has a second display area S2, the first display area S1 and the second display area S2 are combined together to form a large display area, so that the display area is enlarged, and then a peripheral keyboard and a mouse are used for inputting. As described in the foregoing embodiments, the first display panel 11 and the second display panel 12 are electrically connected, so that signal interconnection and power interconnection can be realized between the two, and coordinated display of a screen can be realized.

Continuing back to fig. 3 and 4, the surface of the first substrate 13 facing away from the first display screen 11 is provided with a first supporting member 14 on the side close to the flexible connecting member 30, and the surface of the second substrate 23 facing away from the second display screen 21 is provided with a second supporting member 24 on the side close to the flexible connecting member 30. Referring to fig. 6 and 7, the display device 01 further includes a first rear case 10k and a second rear case 20 k. The first rear shell 10k is arranged on one side, away from the first display screen 11, of the first substrate 13 and is connected with the first fixing and supporting piece 14, the first fixing and supporting piece 14 plays a role in supporting and isolating between the first substrate 13 and the first rear shell 10k, and wrinkles formed by the influences of the first rear shell 10k on the first substrate 13, the extrusion of the second rear shell 20k on the second substrate 23 and the like are controlled between the first fixing and supporting piece 14 and the second fixing and supporting piece 24, so that the wrinkles are reduced, and the first substrate 13 is prevented from being directly contacted with the first rear shell 10 k; the second rear case 20k is disposed on a side of the second substrate 23 away from the second display screen 21, and the second spacer 24 plays a role of supporting and isolating between the second substrate 23 and the second rear case 20k, so as to prevent the second substrate 23 from directly contacting the second rear case 20 k. The positions of the first and

second anchors

14, 24 and the flexible connector 30 can be seen in fig. 13.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A display device, comprising: the display device comprises a first display assembly, a second display assembly and an elastic connecting piece;

the elastic connecting piece comprises a first electric connection part, a second electric connection part and an elastic electric connection part, the first electric connection part and the second electric connection part are electrically connected through the elastic electric connection part, the first electric connection part is electrically connected with the first display assembly, and the second electric connection part is electrically connected with the second display assembly;

when the display device is in a folded state, the light-emitting surface of the first display assembly is opposite to the light-emitting surface of the second display assembly;

when the display device is in the unfolded state, the light-emitting surface of the first display assembly and the light-emitting surface of the second display assembly face to the same direction.

2. The display device according to claim 1, wherein the elastic electrical connection portion has a redundant structure.

3. The display device according to claim 2, wherein the bend of the redundant structure is a rounded corner structure.

4. The display device of claim 3, wherein the redundant structure further comprises a straight line segment connected between adjacent rounded corner structures.

5. The display device according to claim 2, wherein the bend of the redundant structure is a dog-ear structure.

6. The display device according to claim 2, wherein the redundant structure is in a zigzag shape.

7. A display device as claimed in any one of claims 3 to 6, wherein the redundant structure is a fractal structure.

8. The display device according to claim 2, wherein the redundant structure is a mesh structure.

9. The display device according to claim 1, wherein the elastic electrical connection portion comprises: a third substrate; and a set of conductive lines distributed on at least one side of the third substrate;

10. The display device according to claim 1, wherein the first display element and/or the second display element has a touch function.