WO2019104535A1

WO2019104535A1 - Special-shaped curved display screen and manufacturing method therefor

Info

Publication number: WO2019104535A1
Application number: PCT/CN2017/113607
Authority: WO
Inventors: 陈世敏
Original assignee: 武汉华星光电半导体显示技术有限公司
Priority date: 2017-11-28
Filing date: 2017-11-29
Publication date: 2019-06-06
Also published as: CN107886849A

Abstract

A special-shaped curved display screen and a manufacturing method therefor, and a display device comprising a touch OLED display panel. The manufacturing method comprises: providing a flexible display panel (11) and a protective cover (12) matching each other in length, the protective cover (12) being a flat structure or an arc-shaped structure having a central angle of not more than 180°; bonding the flexible display panel (11) and the protective cover (12) to each other to prepare a sub-display screen (10a, 10b, 10c), the sub-display screen (10a, 10b, 10c) being a flat display screen or an arc-shaped display screen having a central angle of not more than 180°; selecting a plurality of sub-display screens (10a, 10b, 10c), each of the sub-display screens (10a, 10b, 10c) being independently selected from the flat display screen or the arc-shaped display screen having a central angle of not more than 180°; and respectively splicing and integrating the flexible display panels (11) and the protective covers (12) of the selected sub-display screens (10a, 10b, 10c) in sequence by means of a seamless splicing process to form a special-shaped curved structure, so as to obtain a special-shaped curved display screen.

Description

Shaped curved display screen and preparation method thereof

Technical field

The present invention relates to the field of display technologies, and in particular, to a profiled curved display screen and a method of fabricating the same.

Background technique

With the evolution and breakthrough of display technology, based on the reasons for users to have a better visual experience when viewing, or to make the appearance of the device more design, or to increase the overall display area in a limited device space, nowadays The display screens configured on mobile devices and wearable devices have adopted various non-planar curved display screens, such as the curved display with narrow borders as shown in Figure 1a, and the borderless curved display shown in Figure 1b. A curved display with a back display as shown in 1c. Among them, the curved display screen shown in FIG. 1b and FIG. 1c has a complicated shape and can be called a profiled curved display.

In the display products of small and medium-sized intelligent terminals, it is a common way to fit the two structural members of the flexible display panel (Clan) and the curved cover glass to form a curved display screen. Specifically, the first is to provide a curved glass cover and a flat flexible display panel, and then attach the optical adhesive on the flexible display panel, and then attach the flexible display panel to the inner surface of the curved glass cover to make the plane flexible. The display panel is curved into the same shape as the curved glass cover, and is integrally formed with the curved glass cover to form a curved display. For the curved display screen with a narrow frame as shown in FIG. 1a, the above bonding method can be easily prepared and the production yield is relatively high. However, for the profiled curved display screen shown in FIG. 1b and FIG. 1c, since the curved shape is complicated, the region having a small radius of curvature is included, and the space for the bonding industry is limited, and the production method is the same as the above bonding method. It is prone to problems such as uneven thickness of the optical adhesive and generation of bubbles at the bonding interface, and the quality of the product is poor and the production yield is also low.

Summary of the invention

In view of the above, the present invention provides a profiled curved display screen and a preparation method thereof, which solves the problem that the bonding process of the profiled curved display screen in the prior art is difficult and the production yield is low, and the profiled surface display is also improved. The product quality of the screen.

In order to achieve the above object, the present invention adopts the following technical solutions:

A method for preparing a special-shaped curved display screen, comprising:

Providing a flexible display panel and a protective cover plate whose lengths are matched with each other, the protective cover plate being a planar structure or an arc-shaped structure having a central angle of not more than 180°;

The flexible display panel and the protective cover plate are adhered to each other to prepare a sub-display screen, wherein the sub-display screen is a flat display screen or an arc-shaped display screen having a central angle of not more than 180°;

Selecting a plurality of the sub-display screens, each of the sub-display screens being independently selected from a flat display screen or an arc-shaped display screen having a central angle of not more than 180°;

The seamless splicing process is applied, and the flexible display panel and the protective cover of the selected sub-display are sequentially spliced and integrated to form a special-shaped curved structure, and a special-shaped curved display screen is obtained.

The selected sub-display screen includes a first sub-display screen and two second sub-display screens, wherein the first sub-display screen is a flat display screen, and the second sub-display screen has a central angle of not more than 180 An arc-shaped display screen of °; applying a seamless splicing process, respectively connecting the two second sub-displays to opposite ends of the first sub-display and extending toward the back of the first sub-display .

Wherein, the second sub-display screen is an arc-shaped display screen with a central angle of 180°.

The selected sub-display screen further includes a third sub-display screen, wherein the third sub-display screen is a flat display screen; and the third sub-display screen is connected to the second sub-application by applying a seamless splicing process Display.

The third sub-display screen and the first sub-display screen are parallel to each other.

The selected sub-display includes a first sub-display, two second sub-displays and two third sub-displays, the first sub-display, the second sub-display and the third sub-display The screens are all flat display screens; the two second sub-display screens are respectively connected to opposite ends of the first sub-display screen and extend toward the back of the first sub-display screen; The two third sub-displays are respectively connected to the two second sub-displays.

The second sub display screen and the first sub display screen are perpendicular to each other.

Wherein, the flexible display panel is a flexible OLED display panel.

The embodiment of the present invention further provides a special-shaped curved display screen, which is prepared by the preparation method as described above, wherein the irregular curved display screen comprises a plurality of sub-display screens which are sequentially spliced, and the sub-display screen includes mutual a flexible display panel and a protective cover, each of which is selected from the group consisting of A flat display or an arc-shaped display with a central angle of no more than 180°. The flexible display panels of all sub-displays are integrally joined to form a profiled curved structure. The protective covers of all sub-displays are seamless. The splicing is integrated to form a corresponding shaped curved surface structure.

The irregular curved display screen and the preparation method thereof are provided by the embodiment of the invention, and the shaped curved display screen is divided into a plurality of sub-display screens, each sub-display screen is a flat display screen or an arc-shaped display screen having a central angle of not more than 180° The sub-display's bonding process is difficult, easy to implement, and has high production yield. Then, the multiple splicing screens are sequentially spliced and integrated into a single splicing process to form a profiled curved structure, and a special-shaped curved display screen is prepared. Therefore, the problem that the bonding process of the special-shaped curved display screen in the prior art is difficult and the production yield is low is solved, and the product quality of the profiled curved display screen is also improved.

DRAWINGS

1a to 1c are exemplary illustrations of curved shapes of a conventional curved display screen;

2 is a process flow diagram of a method for preparing a deformed curved display screen according to an embodiment of the present invention;

3 is an exemplary illustration of a bonding process of a planar sub-display screen in an embodiment of the present invention;

4 is an exemplary illustration of a bonding process of a circular arc-shaped sub-display screen in an embodiment of the present invention;

5 is a schematic structural view of a profiled curved display screen in Embodiment 1 of the present invention;

6 is a schematic structural view of a profiled curved display screen in Embodiment 2 of the present invention;

7 is a schematic structural view of a profiled curved display screen in Embodiment 3 of the present invention.

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the drawings. The embodiments of the invention shown in the drawings and described in the drawings are merely exemplary, and the invention is not limited to the embodiments.

In this context, it is also to be noted that in order to avoid obscuring the invention by unnecessary detail, only the structures and/or processing steps closely related to the solution according to the invention are shown in the drawings, and the Other details that are not relevant to the present invention.

Example 1

The embodiment provides a method for preparing a special-shaped curved display screen, as shown in FIG. 2, the preparation is as follows. The method includes the steps of:

Step S101: Preparing a sub-display screen, wherein the sub-display screen comprises a flat display screen and an arc-shaped display screen having a central angle of not more than 180°.

Specifically, referring to FIG. 3 and FIG. 4, firstly, a flexible display panel 11 and a protective cover 12 whose lengths are matched with each other are provided, and then an optical adhesive (not shown) is attached to the flexible display panel 11, and then the flexible display is displayed. The panel 11 is attached to the inner surface of the protective cover 12 such that the flat flexible display panel 11 is formed in the same shape as the protective cover 12, and is integrally formed with the protective cover 12 to form the sub-display screen 10.

As shown in FIG. 3, the protective cover 12 has a planar structure, and the prepared sub-display 10 is a flat display. As shown in FIG. 4, the protective cover 12 has an arc-shaped structure with a central angle ω of not more than 180°, and the prepared sub-display 10 is an arc-shaped display having a central angle of not more than 180°. For a flat display screen and an arc-shaped display with a central angle of not more than 180°, the shape of the protective cover 12 is regular and relatively simple, and when the flexible display panel 11 is attached, the difficulty of the bonding industry is small, and the improvement is small. The work efficiency is high, and the problem of uneven thickness of the bonding and bubble generation at the bonding interface can be effectively avoided, and the production yield is high.

It should be noted that, for the planar sub-display screen 10, the length thereof can be set to various specifications according to actual needs. For the arc-shaped sub-display 10, the radius of curvature and the arc length can be set to various specifications according to actual needs. By setting the radius of curvature of the protective cover 12 and the arc length, an arc-shaped sub-routine of a corresponding specification can be obtained. The display screen 10, but it is ensured that the central angle is not more than 180°, so as to avoid the opening of the inner surface of the protective cover 12 being too small, resulting in a limited space for the bonding industry.

Further, the protective cover 12 is generally selected as a glass cover, and the flexible display panel 11 may be selected as a flexible LCD display panel or a flexible OLED display panel, preferably using a flexible OLED display panel.

Step S102: Select a plurality of the sub-display screens, and each of the sub-display screens is independently selected from a flat display screen or an arc-shaped display screen having a central angle of not more than 180°.

In the present embodiment, referring to FIG. 5-(a), the selected sub-display screen 10 includes a first sub-display screen 10a and two second sub-display screens 10b. The first sub-display screen 10a is planar. In the display screen, the second sub-display screen 10b is an arc-shaped display screen having a central angle of 180°, that is, the second sub-display screen 10b is an arc-shaped display screen having a semicircular structure.

Step S103: Applying a seamless splicing process, respectively, the flexible display panel and the protective cover of the selected sub-display are sequentially spliced and integrated to form a special-shaped curved structure, and the shaped curved display screen is obtained.

In this embodiment, referring to FIG. 5-(b), applying the seamless splicing process, the two second sub-display screens 10b are respectively connected to opposite ends of the first sub-display screen 10a, and the The second sub-display screen 10b extends toward the back side of the first sub-display screen 10a on the side of the first sub-display screen 10a. Specifically, applying the seamless splicing process, the

flexible display panels

11a, 11b of the first sub-display screen 10a and the two second sub-display screens 10b are sequentially spliced together to form a profiled curved structure, and at the same time, The

protective cover plates

12a, 12b of the first sub-display screen 10a and the two second sub-display screens 10b are sequentially joined together to form a corresponding profiled curved structure.

As shown in FIG. 5-(b), the deformed curved display screen prepared in this embodiment is a curved display without borders, and includes a first sub-display screen 10a and two second sub-displays which are sequentially spliced. Screen 10b. The first sub-display screen 10a is a flat display screen as a front display area of the deformed curved display screen; the two second sub-display screens 10b are respectively arc-shaped display screens, which serve as the profiled The side display area of the curved display.

Example 2

The difference between this embodiment and Embodiment 1 is that, in step S102, the selected sub-display screen further includes a third sub-display screen. Referring to FIG. 6-(a), the selected sub-display screen 10 includes a first sub-display. The display screen 10a, the two second sub-display screens 10b, and the two third sub-display screens 10c are planar display screens. In step S103, referring to FIG. 6-(b), the two third sub-display screens 10c are respectively connected to the ends of the two second sub-display screens 10b. Further, in the embodiment, the third sub-display screen 10c is disposed in parallel with the first sub-display screen 10a. Of course, in another embodiment, the connection angle of the third sub-display screen 10c can also be set to other connection angles according to actual needs. For example, the end of the third sub-display screen 10c may extend in a direction (non-parallel direction) toward or away from the first sub-display screen 10a.

It should be noted that although the first sub-display screen 10a and the third sub-display screen 10c are both flat display screens, the lengths of the two are not the same.

The rest of the content in this embodiment is the same as that of Embodiment 1, and therefore will not be described again.

As shown in FIG. 6-(b), the deformed curved display screen prepared in this embodiment is a curved display screen having a back display, which includes a first sub-display screen 10a and two second sub-blocks which are sequentially spliced. The display screen 10b and the two third sub-display screens 10c. The first sub-display screen 10a is a flat display screen as a front display area of the deformed curved display screen; the two second sub-display screens 10b are respectively arc-shaped display screens, which serve as the profiled a side display area of the curved display; the two third sub-displays The screen 10c is a flat display screen as a rear display area of the shaped curved display.

Example 3

The difference between this embodiment and Embodiment 2 is that in step S102, the selected sub-displays are all flat display screens. Specifically, referring to FIG. 7-(a), the selected sub-display 10 includes a first sub-display 10a, two second sub-displays 10b, and two third sub-displays 10c, the first sub- The display screen 10a, the second sub-display screen 10b, and the third sub-display screen 10c are all flat display screens. In step S103, referring to FIG. 7-(b), the two second sub-display screens 10b are respectively connected to opposite ends of the first sub-display screen 10a, and the second sub-display screen 10b is The side of the first sub-display screen 10a extends toward the back of the first sub-display screen 10a; the two third sub-display screens 10c are respectively connected to the ends of the two second sub-display screens 10b.

Further, in this embodiment, the second sub-display screen 10b is disposed perpendicular to the first sub-display screen 10a, and the third sub-display screen 10c is disposed to be opposite to the first sub-display screen 10a. Parallel to each other. Of course, in another embodiment, the connection angle between the first sub-display screen 10a, the second sub-display screen 10b, and the third sub-display screen 10c may be set to other connection angles according to actual needs.

It should be noted that although the first sub-display screen 10a, the second sub-display screen 10b, and the third sub-display screen 10c are all flat display screens, the lengths of the three are not the same.

The rest of the content in this embodiment is the same as that of Embodiment 1 or Embodiment 2, and therefore will not be described again.

As shown in FIG. 7-(b), the shaped curved display screen prepared in this embodiment is a curved display screen having a back display, which includes a first sub-display screen 10a and two second sub-blocks which are sequentially spliced. The display screen 10b and the two third sub-display screens 10c. The first sub-display screen 10a is a flat display screen as a front display area of the deformed curved display screen; the two second sub-display screens 10b are respectively flat display screens, and the curved surface display screen is used as the shaped curved surface. The side display area of the display screen; the two third sub-display screens 10c are planar display screens as the back display area of the shaped curved display screen.

In summary, the irregular curved display screen and the preparation method thereof are provided, and the shaped curved display screen is divided into a plurality of sub-display screens, each sub-display screen is a flat display screen or a central angle of not more than 180°. The arc-shaped display screen has a small difficulty in the bonding process of the sub-display, is easy to implement, and has high production yield. Then, the multiple splicing screens are successively spliced and integrated into a single splicing process to form a profiled curved structure, and the preparation is obtained. The special-shaped curved display screen solves the problem that the fitting process of the profiled curved display screen in the prior art is difficult and the production yield is low, and the product quality of the profiled curved display screen is also improved.

It should be noted that, in this context, relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply such entities or operations. There is any such actual relationship or order between them. Furthermore, the term "comprises" or "comprises" or "comprises" or any other variations thereof is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device that comprises a plurality of elements includes not only those elements but also Other elements, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

The above description is only a specific embodiment of the present application, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present application. It should be considered as the scope of protection of this application.

Claims

A method for preparing a special-shaped curved display screen, comprising:

Providing a flexible display panel and a protective cover plate whose lengths are matched with each other, the protective cover plate being a planar structure or an arc-shaped structure having a central angle of not more than 180°;

The flexible display panel and the protective cover plate are adhered to each other to prepare a sub-display screen, wherein the sub-display screen is a flat display screen or an arc-shaped display screen having a central angle of not more than 180°;

Selecting a plurality of the sub-display screens, each of the sub-display screens being independently selected from a flat display screen or an arc-shaped display screen having a central angle of not more than 180°;

The seamless splicing process is applied, and the flexible display panel and the protective cover of the selected sub-display are sequentially spliced and integrated to form a special-shaped curved structure, and a special-shaped curved display screen is obtained.
The method for preparing a deformed curved display screen according to claim 1, wherein the selected sub-display screen comprises a first sub-display screen and two second sub-display screens, wherein the first sub-display screen is a flat display a second sub-display screen is an arc-shaped display screen having a central angle of not more than 180°; applying the seamless splicing process to connect the two second sub-displays to the first sub-display The opposite ends extend toward the back of the first sub-display.
The method for preparing a deformed curved display screen according to claim 2, wherein the second sub-display screen is an arc-shaped display screen having a central angle of 180°.
The method for preparing a deformed curved display screen according to claim 2, wherein the selected sub-display screen further comprises a third sub-display screen, wherein the third sub-display screen is a flat display screen; Connecting the third sub-display to the second sub-display.
The method of manufacturing a deformed curved display screen according to claim 4, wherein the third sub-display screen and the first sub-display screen are parallel to each other.
The method for preparing a deformed curved display screen according to claim 1, wherein the selected sub-display screen comprises a first sub-display screen, two second sub-display screens, and two third sub-display screens, a sub-display screen, a second sub-display screen and a third sub-display screen are flat display screens; and the two second sub-display screens are respectively connected to the first sub-display screen by applying a seamless splicing process The two second sub-displays are respectively connected to the two second sub-displays at opposite ends and extending toward the back of the first sub-display.
The method of manufacturing a profiled curved display screen according to claim 6, wherein the second sub-display screen and the first sub-display screen are perpendicular to each other.
The method of manufacturing a deformed curved display screen according to claim 7, wherein the third sub-display screen and the first sub-display screen are parallel to each other.
The method of manufacturing a profiled curved display screen according to claim 6, wherein the third sub-display screen and the first sub-display screen are parallel to each other.
The method of manufacturing a deformed curved display screen according to claim 1, wherein the flexible display panel is a flexible OLED display panel.
A profiled curved display screen, wherein the shaped curved display screen comprises a plurality of sub-display screens that are sequentially spliced, the sub-display screens comprising a flexible display panel and a protective cover that are attached to each other, each of the sub-displays They are respectively selected from a flat display screen or an arc-shaped display with a central angle of not more than 180°. The flexible display panels of all the sub-displays are integrally joined to form a special-shaped curved structure through the seamless splicing, and the protective cover of all the sub-displays The corresponding irregular curved structure is formed by seamlessly joining together.
The shaped curved display screen according to claim 11, wherein the shaped curved display screen comprises a first sub-display screen and two second sub-display screens, wherein the first sub-display screen is a flat display screen. The second sub-display screen is an arc-shaped display screen having a central angle of not more than 180°; the two second sub-display screens are respectively seamlessly spliced to opposite ends of the first sub-display screen and facing the first The back of a sub display extends.
The profiled curved display screen according to claim 12, wherein the second sub-display screen is an arc-shaped display screen having a central angle of 180°.
The shaped curved display screen of claim 12, wherein the shaped curved display screen further comprises a third sub-display screen, the third sub-display screen being a flat display screen; the third sub-display screen is seamless Spliced to the second sub display.
The profiled curved display screen of claim 14, wherein the third sub-display screen and the first sub-display screen are parallel to each other.
The shaped curved display screen of claim 11 wherein said profiled curved display comprises a first sub-display, two second sub-displays and two third sub-displays, said first sub-display The screen, the second sub-display screen and the third sub-display screen are all flat display screens; the two second sub-display screens are respectively seamlessly spliced to opposite ends of the first sub-display screen and facing the first One child display The back of the screen extends, and the two third sub-displays are respectively seamlessly spliced to the two second sub-displays.
The profiled curved display screen of claim 16 wherein said second sub-display screen and said first sub-display screen are perpendicular to each other.
A profiled curved display screen according to claim 17, wherein said third sub-display screen and said first sub-display screen are parallel to each other.
The profiled curved display screen of claim 16 wherein said third sub-display screen and said first sub-display screen are parallel to each other.
The profiled curved display screen of claim 11 wherein the flexible display panel is a flexible OLED display panel.