WO2019104657A1

WO2019104657A1 - Flexible display device, fabrication method for flexible display device and electronic device

Info

Publication number: WO2019104657A1
Application number: PCT/CN2017/113989
Authority: WO
Inventors: 邬强; 谭小平; 周锦杰
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2017-11-30
Filing date: 2017-11-30
Publication date: 2019-06-06
Also published as: CN110785800A

Abstract

A flexible display device (100), a fabrication method for the flexible display device (100) and an electronic device (1000), the flexible display device (100) comprising: a display panel (20), a driver integrated circuit (40), an electronic component module (60) and a connector (80). The display panel (20) comprises a flexible substrate (21). The flexible substrate (21) comprises a display screen area (212) and an electric extension area (214) which are connected to each other, the display screen area comprising a display area (2122) which may display an image frame. The driver integrated circuit (40), the electronic component module (60) and the connector (80) are all arranged on the electric extension area (214).

Description

Flexible display device, method of manufacturing flexible display device, and electronic device

Technical field

The present invention relates to a display device, and more particularly to a flexible display device, a method of manufacturing the flexible display device, and an electronic device.

Background technique

In the flexible display device, a plurality of substrates such as a substrate of a display panel, a substrate for mounting a driving integrated circuit, and a substrate of an electronic component are connected by a bonding process, since the joint is difficult to bend or bend It is easy to break, thus limiting the bendability of the flexible display device.

Summary of the invention

Embodiments of the present invention provide a flexible display device, a method of manufacturing the flexible display device, and an electronic device.

The present invention provides a flexible display device including a display panel, a driving integrated circuit, an electronic component module, and a connector, the display panel including a flexible substrate, the flexible substrate including an adjacent display screen area and an electrical extension area, The display area includes a display area capable of displaying an image frame, and the driver integrated circuit, the electronic component module, and the connector are both disposed on the electrical extension.

The invention provides an electronic device comprising:

Housing; and

The flexible display device is mounted on the housing.

The present invention provides a method of manufacturing a flexible display device, the method of manufacturing comprising:

Forming a display panel on a flexible substrate, the flexible substrate comprising an adjacent display screen area and an electrical extension area, the display screen area including a display area capable of displaying an image frame;

A driver integrated circuit, an electronic component module, and a connector are attached to the electrical extension to form the flexible display device.

A flexible display device, a method of manufacturing a flexible display device, and an electronic device according to an embodiment of the present invention solve a plurality of flexible substrates by disposing a driving integrated circuit, an electronic component module, and a connector on an electrical extension region of a flexible substrate of a display panel The connection caused by the connection is difficult to bend, thereby improving the bendability of the flexible display device.

The additional aspects and advantages of the embodiments of the present 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 structural view of a flexible display device according to an embodiment of the present invention;

2 is a schematic flow chart of a method of manufacturing a flexible display device according to an embodiment of the present invention;

3 is a schematic diagram of an electronic device according to an embodiment of the present invention;

4 is another schematic flow chart of a method of manufacturing a flexible display device according to an embodiment of the present invention;

FIG. 5 is another schematic structural view of a flexible display device according to an embodiment of the present invention; FIG.

6 is a schematic structural view of a display panel according to an embodiment of the present invention;

FIG. 7 is another schematic structural view of a display panel according to an embodiment of the present invention.

The main component symbol drawing description:

The electronic device 1000, the flexible display device 100, the display panel 20, the flexible substrate 21, the display screen area 212, the display area 2122, the non-display area 2124, the electrical extension area 214, the mounting sub-area 2142, the electrical connection sub-area 2144, and the organic light-emitting diode The layer 22, the flexible encapsulation film layer 23, the polarizer 24, the display layer 25, the touch layer 26, the driver integrated circuit 40, the electronic component module 60, the connector 80, and the housing 900.

Detailed ways

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals indicate 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 connected in one piece. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, which can be the internal communication of two elements or the interaction of two elements. 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.

Referring to FIG. 1, a flexible display device 100 according to an embodiment of the present invention includes a display panel 20, a driver IC 40, an electronic component module 60, and a connector 80. The display panel 20 includes a flexible substrate 21. The flexible substrate 21 includes a display screen area 212 and an electrical extension area 214 that are connected to each other. The display screen area 212 includes a display area 2122 capable of displaying an image of the image. Driver integrated circuit 40, electronic component module 60, and connector 80 are all disposed on electrical extension region 214.

Referring to FIG. 2, a method for manufacturing a flexible display device 100 according to an embodiment of the present invention includes:

Step 02: manufacturing a display panel 20 on the flexible substrate 21, the flexible substrate 21 includes a display screen area 212 and an electrical extension area 214, and the display screen area 212 includes a display area 2122 capable of displaying an image screen;

Step 04: The driver integrated circuit 40, the electronic component module 60, and the connector 80 are attached to the electrical extension region 214 to form the flexible display device 100.

In some embodiments, the flexible substrate 21 is a single flexible substrate, and the flexible substrate 21 is integrally formed.

The manufacturing method of the embodiment of the present invention can be used to manufacture the flexible display device 100 of the embodiment of the present invention.

Referring to FIG. 3 , the flexible display device 100 of the embodiment of the present invention may be applied to the electronic device 1000 of the embodiment of the present invention, or the electronic device 1000 of the embodiment of the present invention includes the flexible display device 100 of the embodiment of the present invention. In addition, the electronic device 1000 of the embodiment of the present invention further includes a housing 900 on which the flexible display device 100 can be mounted.

The flexible display device 100 of the embodiment of the present invention, the manufacturing method of the flexible display device 100, and the electronic device 1000 are disposed on the electrical extension region 214 of the flexible substrate 21 of the display panel 20 by disposing the driving integrated circuit 40, the electronic component module 60, and the connector 80. Therefore, the problem that the joints are difficult to be bent due to the interconnection of the plurality of flexible substrates is solved, thereby improving the bendability of the flexible display device 100.

In some embodiments, the electronic device 1000 includes a mobile phone, a tablet, a smart bracelet, a smart watch, and the like. The following uses the electronic device 1000 as a mobile phone as an example: Please refer to FIG. 3. The mobile phone in FIG. 3 includes a flexible display device 100 and a housing 900 on which the flexible display device 100 is mounted.

In some embodiments, the connector 80 includes solder joints, connecting wires, plugs, sockets, etc., and the electronic component module 60 can be connected through the connector 80 and other electronic devices of the electronic device 1000, such as electronic components. The module 60 is connected to the main board of the electronic device 1000 through the connector 80.

In some embodiments, the material used for the flexible substrate 21 includes polyimide (PI).

In this way, the performance of the flexible substrate 21 can be improved.

Specifically, polyimide can be used for a long period of time in the temperature range of -200 degrees Celsius - 300 degrees Celsius, high temperature resistance up to 400 degrees Celsius, high insulation performance, and high bendability, so polyimide can be used as A material for manufacturing the flexible substrate 21. In one embodiment, the flexible substrate 21 uses polyimide as a substrate.

In some embodiments, the flexible substrate 21 may also be made of other materials such as a polyester material, and is not specifically limited herein.

Referring to FIG. 4, in some embodiments, step 04 includes:

Step 042: The driver integrated circuit 40, the electronic component module 60, and the connector 80 are formed on the electrical extension region 214 by a COP (chip on PI) package.

As such, the screen ratio of the electronic device 1000 provided with the flexible display device 100 can be increased.

In some embodiments, COP refers to disposing the driving integrated circuit 40, the electronic component module 60, and the connector 80 on the back side of the display panel 20, thereby increasing the screen ratio of the electronic device 1000. Specifically, referring to FIG. 5, the flexible extension substrate 21 can be bent, the electrical extension region 214 and the display screen region 212 are oppositely disposed, and the driving integrated circuit 40, the electronic component module 60, and the connector 80 are electrically extended. Area 214.

In some embodiments, the display screen area 212 and the electrical extension area 214 can be disposed in the same plane, that is, the flexible substrate 21 is in a flattened state, so that the thickness of the flexible substrate 21 can be reduced, and the flexible substrate 21 can be bent. The folding property further increases the bendability of the flexible display device 100.

Referring to FIG. 1, in some embodiments, display screen area 212 also includes a non-display area 2124 that surrounds display area 2122.

As such, the display panel 20 can be routed through the non-display area 2124.

Specifically, the display panel 20 generally needs to be connected to the driving integrated circuit 40. For example, the display panel 20 is connected to the driving integrated circuit 40 through a connecting line. Therefore, the display screen area 212 generally includes a non-display area 2124 in addition to the display area 2122. A connection line may be disposed on the non-display area 2124 to connect the display panel 20 with the driving integrated circuit 40.

It should be noted that, in some embodiments, the area occupied by the non-display area 2124 may be reduced by reasonably arranging the connection lines or the non-display area 2124 may be bent to the back side of the display area 2122 to increase the screen ratio. Make specific limits.

In some embodiments, the driver integrated circuit 40 is used to drive the display panel 20 to output a display screen.

As such, the display panel 20 can be controlled to output a preset display screen by the driver integrated circuit 40.

Specifically, the display panel 20 generally includes a plurality of rows and columns of pixels, and the driving integrated circuit 40 can be connected to the pixels through a connection line, for example, including scan lines and data lines, and the driving integrated circuit 40 controls a certain line through the scan lines. The (row drive) or a column (column drive) pixel operates, and the drive integrated circuit 40 controls the display brightness of the corresponding pixel point through the data line, thereby causing the display panel 20 to output a preset display screen.

In some embodiments, the electronic component module 60 is formed from a plurality of electronic component packages.

In this way, the bendability of the flexible display device 100 can be improved.

In particular, since the electronic component module 60 is generally packaged with a semiconductor process, the size of the electronic component module 60 is generally greatly reduced relative to the total size of the plurality of electronic components, so that the space occupied by the electronic component module 60 can be reduced, and the electronic component The module 60 is packaged as a device without peripheral components, and the wiring is easier and simpler, thereby preventing the scattered electronic components from affecting the bendability of the flexible display device 100.

In some embodiments, the plurality of electronic components include electronic components such as capacitors, resistors, inductors, and control chips, which are not specifically limited herein.

Referring to FIG. 6 , in some embodiments, the display panel 20 is an Organic Light-Emitting Diode (OLED) display screen. The display panel 20 includes a flexible substrate 21 in sequence along the light emitting direction of the display panel 20 . The LED layer 22, the flexible encapsulation layer 23, and the polarizer 24.

As such, the display panel 20 can display an image screen in the display area 2122.

Specifically, the display panel 20 is formed with a flexible substrate 21 as a substrate on which an organic light emitting diode layer 22 is formed, wherein the organic light emitting diode layer 22 can be formed by vaporizing a light emitting material on the flexible substrate 21, in order to form a full color display panel 20 The luminescent material may include a red luminescent material, a green luminescent material, and a blue luminescent material. A flexible encapsulation film layer 23 is formed on the organic light emitting diode 22, and the organic light emitting diode layer 22 is protected by the flexible substrate 21 and the flexible encapsulation film layer 23 to prevent the organic light emitting diode layer 22 from being easily damaged. Further, the polarizer 24 is a polarizing element, and the light emitted from the organic light emitting diode layer 22 can be corrected by the polarizer 24, thereby improving the look and feel of the image screen displayed by the user on the display panel 20.

Referring to FIG. 7, in some embodiments, the display panel 20 includes a display layer 25 for outputting a display screen and a touch layer 26 for sensing a user's touch to form a touch signal.

As such, the display panel 20 can be a touch display panel, and the flexible display device 100 can be a flexible touch display device.

Specifically, the display layer 25 may include, for example, an organic light emitting diode layer 22, a flexible packaging film layer 23, and a polarizer 24, and the display layer 25 may be disposed between the flexible substrate 21 and the touch layer 26. Touch layer 26 can be, for example, a capacitive touch layer or a resistive touch layer. In some embodiments, the display layer 25 and the touch layer 26 are laminated and disposed such that the display panel 20 can output a display image by using the display layer 25, and the touch layer 26 is used to sense a user's touch to form a touch signal, thereby The touch signal controls the electronic device 1000.

Referring to FIG. 1 , in some embodiments, the electrical extension region 214 includes a mounting sub-region 2142 and an electrical connection sub-region 2144. The mounting sub-region 2142 is located between the electrical connection sub-region 2144 and the display panel region 212, and the driving integrated circuit 40 The electronic component module 60 is mounted to the mounting sub-area 2142, and the connector 80 is mounted to the electrical connection sub-area 2144.

As such, the display panel 20 and the driver integrated circuit 40 can be conveniently connected, and the connector 80 can be easily connected to other electronic devices of the electronic device 1000.

Specifically, the mounting sub-area 2124 is located between the electrical connection sub-area 2144 and the display screen area 212. Therefore, mounting the driving integrated circuit 40 on the mounting sub-area 2142 can cause the driving integrated circuit to be disposed close to the display panel 20, thereby facilitating connection of the driving integrated circuit. 40 and display panel 20. The electronic component module 60 can also be mounted to the mounting sub-area 2142 to coordinate operation with the driver integrated circuit 40. In addition, mounting the connector 80 in the electrical connection sub-area 2144 can facilitate the connector 80 and other electronic devices of the electronic device 1000 to be connected, thereby preventing the connector 80 and the other electronic devices of the electronic device 1000 from being connected to affect the driving integrated circuit 40 or The electronic component module 60 operates normally.

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.

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. Particular features, structures, materials or features described in the 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 device, comprising: a display panel, a driving integrated circuit, an electronic component module and a connector, the display panel comprising a flexible substrate, the flexible substrate comprising a connected display screen area and an electrical extension area, The display screen area includes a display area capable of displaying an image frame, and the driver integrated circuit, the electronic component module, and the connector are disposed on the electrical extension region.
The flexible display device of claim 1, wherein the display screen area further comprises a non-display area surrounding the display area.
The flexible display device according to claim 1, wherein the electronic component module is formed by a plurality of electronic component packages.
The flexible display device of claim 1, wherein the material used for the flexible substrate comprises polyimide.
The flexible display device according to claim 1, wherein the display panel is a flexible organic light emitting diode display screen, and the display panel comprises a flexible substrate, an organic light emitting diode layer, and the like in sequence along the light emitting direction of the display panel. a flexible encapsulating film layer, and a polarizer.
The flexible display device according to claim 1, wherein the display panel comprises a display layer for outputting a display screen, and a touch layer for sensing a touch of the user to form a touch signal.
The flexible display device according to claim 1, wherein the driving integrated circuit is configured to drive the display panel to output a display screen.
The flexible display device according to claim 1, wherein the electrical extension region comprises a mounting sub-region and an electrical connection sub-region, the mounting sub-region being located between the electrical connection sub-region and the display panel region The driver integrated circuit and the electronic component module are mounted in the mounting sub-area, and the connector is mounted in the electrical connection sub-area.
An electronic device, comprising:

Housing; and

The flexible display device according to any one of claims 1 to 8, wherein the flexible display device is mounted on the casing.
A method of manufacturing a flexible display device, characterized in that the manufacturing method comprises:

Forming a display panel on a flexible substrate, the flexible substrate comprising an adjacent display screen area and an electrical extension area, the display screen area including a display area capable of displaying an image frame;

A driver integrated circuit, an electronic component module, and a connector are attached to the electrical extension to form the flexible display device.
The manufacturing method according to claim 10, wherein the step of bonding the driving integrated circuit, the electronic component module, and the connector to form the flexible display device on the electrical extension region comprises:

The driving integrated circuit, the electronic component module, and the connector are formed on the electrical extension region by COP packaging.