WO2018120139A1

WO2018120139A1 - Flexible display screen and display device

Info

Publication number: WO2018120139A1
Application number: PCT/CN2016/113772
Authority: WO
Inventors: 朱剑磊
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2016-12-30
Filing date: 2016-12-30
Publication date: 2018-07-05
Also published as: CN107995988A

Abstract

Disclosed are a flexible display screen (100) and a display device, wherein the flexible display screen (100) comprises a display area (10) and a lead area (20). The lead area (20) is connected to an edge of the display area (10). The lead area (20) comprises a plurality of bent parts (22) in a bent shape; along the bending direction of the bent part (22), the bent part (22) is in a tapered shape; and between two adjacent bent parts (22), a bending axis (102) of the flexible display screen (100) is defined by the bent parts and the display area (10). In the above-mentioned flexible display screen (100) and display device, the bent parts (22) in a bent shape are capable of reducing a frame of the flexible display screen (100); and since the bent parts (22) are in the tapered shape, two adjacent bent parts (22) and the display area (10) can define the bending axis (102) between the bent parts, so that the flexible display screen (100) can be bent along the bending axis (102), such that the flexible display screen (100) can be displayed with a narrow border and also has bendability at the same time.

Description

Flexible display and display device

Technical field

The present invention relates to the field of display technologies, and in particular, to a flexible display screen and a display device.

Background technique

At present, flexible display screens have very good development prospects because of their self-illumination, flexibility and flexibility. The display screen includes a display area and a lead area connecting the display areas, and the lead area is provided with leads connecting the display areas. In order to increase the proportion of the display area relative to the display screen and to achieve a narrow bezel, the lead area is generally bent. However, the flexible display screen of the existing external driving chip is difficult to bend the display area after the lead area is bent. Therefore, the flexible display screen of the existing external driving chip cannot balance the narrow frame display and the bending property.

Summary of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a flexible display screen and a display device.

A flexible display screen in accordance with an embodiment of the present invention includes a display area and a lead area. The lead area connects to the edge of the display area. The lead region includes a plurality of bent portions in a bent shape, and the bent portion has a tapered shape along a direction in which the bent portion is bent, and a flexible display screen is defined between the adjacent two bent portions and the display portion. Bend the shaft.

In some embodiments, the display area has a rectangular shape, and the bent portion has a tapered shape in a direction away from a long edge of the display area when the bent portion is tiled.

In some embodiments, the number of the bent portions is two, and the two bent portions are arranged side by side, and both of the bent portions are connected to the same long edge of the display area.

In some embodiments, the lead region further includes a rectangular connecting portion, the adjacent two bent portions are connected to the display region through the connecting portion, the connecting portion and the connecting portion The two bent portions that are connected are located at the same long edge of the display area.

In some embodiments, the number of the bent portions is two, and the two bent portions are arranged side by side, and the two bent portions are connected to the same long edge of the display area through one of the connecting portions. .

In some embodiments, each of the long edges of the display area is coupled to one of the connecting portion and two of the bent portions, and the two of the bent portions on each of the long edges Side by side settings.

In certain embodiments, the flexible display screen comprises a flexible OLED.

In some embodiments, the display area is rectangular and includes a first edge and a second edge that are vertically connected, the lead area connecting the first edge and extending to the first edge and the second edge Connection.

In some embodiments, the flexible display screen includes a first circuit board connecting the second edge and a first chip disposed on the first circuit board.

In some embodiments, the flexible display screen further includes:

Connecting the second edge to a bent bead; the curling portion has a tapered shape along a direction in which the bead portion is bent;

a first chip disposed on the beading portion, the first chip being electrically connected to the display area; and

A first circuit board connecting the bead portions.

In some embodiments, the flexible display screen includes a second circuit board that connects the bends and a second chip that is disposed on the second circuit board.

In some embodiments, the flexible display screen includes a second chip disposed on the bend and electrically coupled to the display area.

A display device according to an embodiment of the present invention includes the flexible display panel of any of the above embodiments.

In the above flexible display screen and display device, the bent portion can reduce the frame of the flexible display screen, and the bent portion has a tapered shape so that the adjacent two bent portions and the display area can be defined The bending axis is bent so that the flexible display screen can be bent along the bending axis, so that the flexible display screen can simultaneously take care of the narrow bezel display and the bending property.

The additional aspects and advantages of the invention will be set forth in part in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a schematic side view of a flexible display screen according to an embodiment of the present invention;

Figure 2 is a schematic view of the flexible display screen of Figure 1 after being bent;

Figure 3 is a plan view of the flexible display screen of Figure 1;

4 is another plan view of a flexible display screen according to an embodiment of the present invention;

FIG. 5 is still another plan view of a flexible display screen according to an embodiment of the present invention; FIG.

6 is a further plan view of a flexible display screen according to an embodiment of the present invention;

Fig. 7 is still another plan view of the flexible display screen of the embodiment of the present invention.

The main component symbol description:

Flexible display screen 100, bending shaft 102, bending area 110;

Display area 10, display surface 12, back surface 14, long edge 15, short edge 16, first edge 17, second edge 18;

Lead area 20, bent portion 22, lead 24, connecting portion 25;

Crimping portion 30;

First circuit board 40;

First chip 50;

a second circuit board 60;

The second chip 70.

detailed description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, The same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientations of "post", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the present invention and the simplified description, and is not intended to indicate or imply that the device or component referred to has a specific orientation, and is constructed and operated in a specific orientation. Therefore, it should not be construed as limiting the invention. Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include one or more of the described features either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; may be mechanically connected, may be electrically connected or may communicate with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the present invention, the first feature "on" or "under" the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.

The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described below. Of course, they are merely examples and are not intended to limit the invention. In addition, the present invention may be repeated with reference to the numerals and/or reference numerals in the various examples, which are for the purpose of simplicity and clarity, and do not indicate the relationship between the various embodiments and/or arrangements discussed. Moreover, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the use of other processes and/or the use of other materials.

Referring to FIGS. 1-3 together, the flexible display screen 100 of the embodiment of the present invention includes a display area 10 and a lead area 20. The lead area 20 is connected to the edge of the display area 10. The lead region 20 includes a plurality of bent portions 22 in a bent shape. The bent portion 22 has a tapered shape along a direction R in which the bent portion 22 is bent, and the adjacent two bent portions 22 and the display portion 10 defines a bending axis 102 of the flexible display screen 100.

In the above flexible display screen 100, the bent portion 22 is formed to reduce the frame of the flexible display screen 100, and the bent portion 22 has a tapered shape so that the adjacent two bent portions 22 and the display area are The bend axis 102 can be defined such that the flexible display screen 100 can be bent along the bend axis 102 such that the flexible display screen 100 can simultaneously accommodate both narrow bezel display and bendability.

Specifically, a plurality of leads 24 are formed on the lead region 20, and the leads 24 are used for connection with an external circuit. In the direction in which the bent portion 22 is bent, the plurality of leads 24 are gathered to match the arrangement shape of the lead wires 24 with the bent portion 22.

It will be understood that the display area 10 includes a display surface 12 and a back surface 14. The display surface 12 and the back surface 14 are disposed opposite each other. The display surface 12 is for displaying information such as text and images.

In one example, when manufacturing the flexible display 100, a monolithic display screen can be first cut to form the display area 10 and the lead area 20, and the bent portion 22 is elongated along the display area 10 when tiled. The edge 15 has a tapered shape, and then a gathered lead 24 is formed on the lead region 20, and finally the bent portion 22 with the lead 24 is bent to the back surface 14 of the display region 10, so that the area and flexibility of the display region 10 can be made. The aspect ratio of the front side of the display screen 100 is large, so that the flexible display screen 100 has a narrow bezel display.

As shown in FIG. 3, the bending shaft 102 extends in the Y direction. When the bending portion 22 is bent to the back surface 14 of the display area 10, the flexible display screen 100 can be bent along the bending axis 102 to make the flexible display screen The areas of the X direction of 100 overlap, as shown in FIG. 2, so that the flexible display screen 100 has a bendability, which facilitates bending the flexible display screen 100 into different shapes, such as a curved shape, a folded shape, and the like.

In some embodiments, the flexible display screen 100 includes a flexible OLED (Organic Light-Emitting Diode).

The flexible OLED has the advantages of low power consumption, low manufacturing cost, and the like, so that the cost of the flexible display screen 100 can be reduced.

In some embodiments, the display area 10 has a rectangular shape. When the bent portion 22 is tiled, the bent portion 22 has a tapered shape in a direction away from the long edge 15 of the display area 10, as shown in FIG.

Thus, the rectangular display area 10 is easy to manufacture and conforms to the habit of the user viewing the display information using the flexible display area 10, thereby improving the user experience.

In some embodiments, the number of the bent portions 22 is two, and the two bent portions 22 are arranged side by side, and the two bent portions 22 are both connected to the same long edge 15 of the display area 10, as shown in FIG. .

As such, the bends 22 are located at the same long edge 15 of the display region 10 such that the bend axis 102 is substantially parallel to the short edge 16 of the display region 10, thereby making the flexible display screen 100 more easily bent along the bend axis 102.

Referring to FIG. 4, in some embodiments, the lead region 20 further includes a rectangular connecting portion 25, and the adjacent two bent portions 22 are connected to the display region 10 through the connecting portion 25. The connecting portion 25 and the two bent portions 22 connected to the connecting portion 25 are located at the same long edge 15 of the display region 10.

Thus, after the bent portion 22 is bent to the back surface 14 of the display area 10, when the information is displayed on the display area 10, the connecting portion 25 can be presented as a black area located at the edge of the display area 10, so that the flexible display screen 100 can be appropriately increased. The area of the non-display area to meet different user needs.

It can be understood that the connecting portion 24 is also formed with leads connecting the display regions 10, the leads may be right-angled bends or straight lines or a combination thereof, and the connecting portion 24 may be provided to increase the area of the flexible display screen 100 that can be bent.

As shown in FIG. 4, the bending axis 102 can be located in the bending region 110. The connecting portion 24 increases the bend of the flexible display screen 100 in the X direction as compared to the flexible display screen 100 omitting the connecting portion, such as the example of FIG. The area of the folded area facilitates bending of the flexible display screen 100 at different positions.

Specifically, in one embodiment, the number of the bent portions 22 is two, and the two bent portions 22 are arranged side by side, and the two bent portions 22 are connected to the same long edge 15 of the display area 10 through a connecting portion 25, such as Figure 4 shows.

As such, the non-display area formed by the connecting portion 25 is located on the side of the long edge 15 of the display area 10, so that the layout of the flexible display screen 100 is more coordinated to enhance the user experience.

Referring to FIG. 5, in another embodiment, each of the long edges 15 of the display area 10 is connected with a connecting portion 25 and two bent portions 22, and the two bent portions 22 on each long edge 15 are side by side. Settings.

Thus, the upper and lower edge positions of the display area 10 are each formed with a non-display area to meet the needs of the user.

In summary, the specific positions of the bent portion 22 and the connecting portion 25 can be specifically set according to actual conditions.

Referring again to FIG. 3, in some embodiments, the display area 10 is rectangular and includes a first edge 17 and a second edge 18 that are vertically connected. The lead area 20 connects the first edge 17 and extends to the first edge 17 and The junction of the two edges 18.

Specifically, the display area 10 includes a plurality of columns of display pixels, and the display pixels are connected to an external circuit through the leads 24 on the lead area 20, and the external circuit can drive the display pixels to display different information through the leads 24.

The lead region 20 connects the first edge 17 and extends to the junction of the first edge 17 and the second edge 18 such that the leads 24 on the lead region 20 can connect each column of pixels of the display region 10 such that an external circuit can drive the display region Each area of 10 can display information content.

Referring to FIGS. 3-6, in some embodiments, the flexible display screen 100 includes a first circuit board 40 and a first chip 50. The first circuit board 40 is connected to the second edge 18. The first chip 50 is disposed on the first circuit board 40.

The first circuit board 40 is, for example, a flexible circuit board, and the first circuit board 40 can be connected to an external component such as a power source. The first chip 50 can be disposed on the first circuit board 40 by a COF (Chip On Flex) technology. The first circuit board 40 is connected to the external circuit to supply a voltage to the display area 10 of the flexible display screen 100 to cause the display area 10 to emit light, thereby displaying information such as characters and images, and the first chip 50 controls the content displayed on the display area 10. For example, an external circuit connected to the lead region 20 can be used to connect the column pixel electrodes of the display region 20, and the first chip 50 can be used to connect the row pixel electrodes of the display region 10.

Referring to FIG. 7, in some embodiments, the flexible display screen 100 further includes a beading portion 30 that is connected to the second edge 18 and has a bent shape, which is crimped in the direction in which the beading portion 30 is bent. The portion 30 has a tapered shape. The first chip 50 is disposed on the beading portion 30, and the first chip 50 is electrically connected to the display region 10. The first circuit board 40 is connected to the beading portion 30.

Specifically, the first chip 50 may be disposed on the beading portion 30 by a COG (Chip On Glass) technology. When the curling portion 30 is laid, the first chip 50 may be first placed on the beading portion 30, and then the bead portion 30 with the first chip 50 may be bent to the back surface 14 of the display region 10.

It can be understood that the beading portion 30 can be formed with leads to connect the display area 10 and the first chip 50, and connect the display area 10 and the first circuit board 40.

Referring to FIGS. 3-5, in some embodiments, the flexible display screen 100 includes a second circuit board 60 and a second chip 70. The second circuit board 60 is connected to the bent portion 22, and the second chip 70 is disposed at the second portion. On the circuit board 60.

Specifically, the second chip 70 may be a gate chip and/or an SD (drain/source) chip. The second chip 70 can drive the display area 10 to display text, images, and the like.

Of course, the second circuit board 60 can also be a flexible circuit board, and the second chip 70 is disposed on the second circuit board 60, for example, by COF technology.

Referring to FIG. 7 , in some embodiments, the second circuit board 60 may be omitted, and the second chip 70 is directly disposed on the bent portion 22 . The second chip 70 is fixed to the bent portion 22 by, for example, COG technology.

A display device according to an embodiment of the present invention includes the flexible display screen 100 of any of the above embodiments. The display device can include a housing that can secure the flexible display screen 100 to a particular shape.

In the above display device, the bent portion 22 is formed to reduce the frame of the flexible display screen 100, and the bent portion 22 has a tapered shape so that the adjacent two bent portions 22 and the display portion 10 are Limit the bend The folding shaft 102 allows the flexible display screen 100 to be bent along the bending axis 102, so that the flexible display screen 100 can simultaneously achieve both narrow bezel display and bending.

The display device is, for example, an electronic device such as a television, a mobile phone, a tablet computer or the like having the above flexible display screen 100.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples", etc. The specific features, structures, materials or characteristics described in the embodiments or examples are included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

While the embodiments of the present invention have been shown and described, the embodiments of the invention may The scope of the invention is defined by the claims and their equivalents.

Claims

A flexible display screen, comprising:

Display area; and

a lead region connecting the edge of the display area, the lead region includes a plurality of bent portions in a bent shape, and the bent portion has a tapered shape in a direction in which the bent portion is bent, adjacent to A bending axis of the flexible display screen is defined between the two bent portions and the display area.
A flexible display screen according to claim 1, wherein said display area has a rectangular shape, and said bent portion is tapered in a direction away from a long edge of said display area when said bent portion is tiled shape.
The flexible display screen according to claim 2, wherein the number of the bent portions is two, and the two bent portions are arranged side by side, and the two bent portions are connected to the display area. The same long edge.
A flexible display screen according to claim 2, wherein said lead region further comprises a rectangular connecting portion, said adjacent two bent portions being connected to said display region through said connecting portion, said The connecting portion and the two bent portions connected to the connecting portion are located at the same long edge of the display area.
The flexible display screen according to claim 4, wherein the number of the bent portions is two, and the two bent portions are arranged side by side, and the two bent portions are connected by one of the connecting portions. The same long edge of the display area.
A flexible display screen according to claim 4, wherein each of said display areas The long edges are each connected with one of the connecting portions and two of the bent portions, and the two bent portions on each of the long edges are arranged side by side.
The flexible display screen of claim 1 wherein said flexible display screen comprises a flexible OLED.
The flexible display screen of claim 1 wherein said display area is rectangular and includes a first edge and a second edge that are vertically connected, said lead area connecting said first edge and extending to said first a junction of an edge and the second edge.
The flexible display screen of claim 8 wherein said flexible display screen comprises a first circuit board connecting said second edge and a first chip disposed on said first circuit board.
The flexible display screen according to claim 8, wherein the flexible display screen further comprises:

a curling portion connecting the second edge and having a bent shape, wherein the curling portion has a tapered shape in a direction in which the curling portion is bent;

a first chip disposed on the beading portion, the first chip being electrically connected to the display area; and

A first circuit board connecting the bead portions.
A flexible display screen according to claim 1, wherein said flexible display screen comprises a second circuit board connecting said bent portions and a second chip disposed on said second circuit board.
The flexible display screen of claim 1 wherein said flexible display screen comprises a second chip disposed on said bent portion and electrically coupled to said display area.
A display device comprising the flexible display screen of any of claims 1-12.