CN111369901B

CN111369901B - OLED display

Info

Publication number: CN111369901B
Application number: CN202010215010.2A
Authority: CN
Inventors: 张潇斐; 李梁梁; 陈周煜; 李增荣; 付婉霞; 邹振游
Original assignee: BOE Technology Group Co Ltd; Fuzhou BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Fuzhou BOE Optoelectronics Technology Co Ltd
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2021-08-31
Anticipated expiration: 2040-03-24
Also published as: CN111369901A

Abstract

The invention provides an OLED display, which comprises four display screens distributed in a2 x 2 array shape on a plane, wherein two display screens in the same row share one driving integrated circuit and one flexible circuit board to realize synchronous display. The two ends of the side edge of each display screen facing the other display screen in the same row are respectively provided with a first corner part and a second corner part, and the first corner part and the second corner part are respectively far away from and close to the other row of display screens. Two first corners of two display screens of same row are connected through a set of adapter assembly rotation, and two second corners of two display screens of same row are connected through a set of adapter assembly rotation. The OLED display can enable the four display screens to relatively rotate on a plane, and enable the two rows of display screens to relatively turn over. The OLED display provided by the invention can realize the rotation of each display screen on the plane, and can realize another display size. In addition, the two display screens in the same row share the drive integrated circuit and the flexible circuit board, so that the synchronous control of the two display screens can be realized.

Description

OLED display

Technical Field

The invention relates to the technical field of flexible OLED panel module design and packaging, in particular to an OLED display.

Background

The flat panel display device has many advantages of thin body, power saving, no radiation, etc., and is widely used. The conventional flat panel display device mainly includes a liquid crystal display device and an organic electroluminescent display device.

The OLED display device has the advantages of self-luminescence, full solid state, high contrast, and the like, and thus becomes a novel display device having the most potential in recent years. The most important characteristic of the OLED display device is that flexible display can be realized, and the flexible display device which is made of the flexible substrate, light in weight, bendable and convenient to carry is an important development direction of the OLED display device.

The flexible substrate applied to the flexible organic electroluminescent device is mainly a polymer substrate at present, and the polymer substrate is light, thin, firm and excellent in flexibility. The flexible OLED display panel not only can be lighter and thinner in size, but also can reduce power consumption, and is beneficial to improving the endurance performance of corresponding products. Meanwhile, due to the flexibility and the flexibility of the flexible OLED panel, the durability of the flexible OLED panel is higher than that of a common hard panel. The flexible OLED display panel can be widely applied to various products with display functions, such as tablet computers, televisions, display terminals and various wearable display devices. When the OLED display panel uses a flexible substrate, double-sided display can be performed by bending, but when the OLED display panel is used for a long time, metal lines in a screen are easily broken, and defects such as bright lines are easily caused.

Disclosure of Invention

It is a primary object of the present invention to overcome at least one of the above-mentioned disadvantages of the prior art and to provide an OLED display capable of implementing screen folding, display size conversion, and multi-screen synchronous display.

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

according to an aspect of the present invention, there is provided an OLED display. The OLED display comprises four display screens distributed in a2 x 2 array shape on a plane, and the two display screens in the same row share one driving integrated circuit and one flexible circuit board to realize synchronous display. Every another piece of orientation of display screen is in the same row the side both ends of display screen have first bight and second bight respectively, first bight with the second bight is kept away from and is close to another row respectively the display screen. Two of the same row of two of display screen first bights rotates through a set of adapter assembly and connects, and two of the same row of two of display screen second bights rotates through a set of adapter assembly and connects. Wherein the OLED display is configured to enable four pieces of the display screens to relatively rotate on the plane, and is configured to enable two rows of the display screens to relatively turn over.

According to one embodiment of the present invention, each display screen includes an OLED substrate, an upper cover plate, the flexible circuit board, and the driving integrated circuit is located between the flexible circuit board and the OLED substrate. And in the two display screens in the same row, the shared flexible circuit board and the drive integrated circuit are bridged between the two display screens.

According to one embodiment of the present invention, the flexible circuit board is configured to be disposed over a flexible substrate. And/or the driving integrated circuit is configured to be arranged on the flexible substrate.

According to one embodiment of the present invention, the flexible substrate is made of a polyimide copper foil.

According to one embodiment of the invention, the part of the flexible circuit board, which is bridged between the two display screens, is provided with a corrugated structure. And/or the part of the driving integrated circuit, which is bridged between the two display screens, is provided with a corrugated structure.

According to one embodiment of the present invention, the connection assembly connected between the two display panels in the same row comprises two rotation shafts and an elastic connecting rod. One end of each rotating shaft is fixed on the lower surface of the driving integrated circuit, and the other end of each rotating shaft extends out of the back of the display screen. The elastic connecting rod is positioned on the back of the display screen, and two ends of the elastic connecting rod are respectively and rotatably connected with the two rotating shafts.

According to one embodiment of the invention, a UV adhesive layer is disposed on a lower surface of the driving integrated circuit, and the rotating shaft is configured to be fixed to the driving integrated circuit through the UV adhesive layer.

According to one embodiment of the present invention, the connection assembly connected between the two display screens in the same column comprises two rotation shafts and an elastic connecting rod. Each rotating shaft is fixed and extends out of the lower surface of the OLED substrate, namely extends out of the back of the display screen. The elastic connecting rod is positioned on the back of the display screen, and two ends of the elastic connecting rod are respectively and rotatably connected with the two rotating shafts.

According to one embodiment of the present invention, the adapter assembly includes two rotating shafts and an elastic link. The two rotating shafts are respectively fixed and extend out of the back sides of the two display screens. The elastic connecting rod is positioned on the back of the display screen, and two ends of the elastic connecting rod are respectively and rotatably connected with the two rotating shafts.

According to one embodiment of the invention, the end of the rotating shaft extending out of the back of the display screen is provided with a limiting end, two ends of the elastic connecting rod are respectively provided with a sleeve ring, the two sleeve rings of the elastic connecting rod are respectively sleeved on the two rotating shafts, and the sleeve rings are limited between the back of the display screen and the limiting end.

According to the technical scheme, the OLED display has the advantages and positive effects that:

the OLED display provided by the invention can solve the problem that the flexible OLED is easy to generate defects in the bending process, and can provide a larger and adjustable display area. Compared with the existing flexible OLED design scheme, the flexible OLED display screen can realize that two rows of display screens are turned and folded 180 degrees relatively, can also realize that each display screen rotates on the plane, and can realize another display size when the two rows of display screens are turned and folded 180 degrees relatively after rotating. In addition, the two display screens in the same row share the drive integrated circuit and the flexible circuit board, so that synchronous control of the two display screens in the same row can be realized, and thus, picture synchronization can be realized on the two display screens in the same row, and the effect of enlarging the area of a display area is achieved.

Further, in one embodiment of the present invention, the two display screens are connected by the elastic connecting rod, and compared with the existing foldable display device that is folded, the flexible touch screen in the device must be folded in half, and if the flexible touch screen is folded in half or bent excessively, the screen is likely to be abnormal or damaged. The invention adopts the elastic connecting rod to avoid poor reliability easily generated in the existing flexible OLED design.

Drawings

Various objects, features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:

FIG. 1 is a schematic view of a display area of an OLED display in a first display mode according to an exemplary embodiment;

FIG. 2 is a schematic view of a display area of the OLED display shown in FIG. 1 in a second display mode;

FIG. 3 is a schematic diagram of the OLED display shown in FIG. 1 during a transition between two display modes;

FIG. 4 is a schematic diagram of the OLED display shown in FIG. 1 in a first display mode;

FIG. 5 is a schematic diagram of the OLED display shown in FIG. 1 in a second display mode;

FIG. 6 is a schematic view of a stacked structure of a display screen of the OLED display shown in FIG. 1;

FIG. 7 is a schematic view of a portion of the OLED display shown in FIG. 1 in a first display mode;

fig. 8 is a partial structural schematic view of the OLED display shown in fig. 1 in a second display mode.

The reference numerals are explained below:

100a. a display screen;

100b, displaying screen;

100c, displaying screen;

100d, displaying a screen;

101. a first corner portion;

102. a second corner portion;

an OLED substrate;

120. an optical adhesive layer;

130. a polarizer;

140. an upper cover plate;

150. a flexible circuit board;

160. a drive integrated circuit;

170, UV glue layer;

200. a switching component;

210. a rotating shaft;

211. a limiting end;

220. an elastic link;

221. a collar;

aa1. display area;

aa2. display area;

aa3. display area;

aa4. a display area;

sa, bridging area;

s1, turning over a shaft;

s2, turning over the shaft.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are accordingly to be regarded as illustrative in nature and not as restrictive.

In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples described in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of the invention.

Referring to fig. 1, a schematic diagram of a display area of an OLED display in a first display mode is representatively shown, which particularly shows the structure as viewed from the back of the OLED display. In the exemplary embodiment, the OLED display proposed by the present invention is described as being applied to a flat panel display as an example. Those skilled in the art will readily appreciate that many modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to apply the inventive concepts described herein to other types of displays or other devices, and such changes are within the scope of the OLED display principles set forth herein.

The OLED display provided by the invention can be switched between two display modes. Referring to fig. 2 to 8, fig. 2 representatively illustrates a schematic view of a display area of the OLED display in a second display mode; FIG. 3 is a schematic diagram of the operation of an OLED display for switching between two display modes; FIG. 4 representatively illustrates a schematic view of an OLED display in a first display mode; FIG. 5 representatively illustrates a schematic view of an OLED display in a second display mode; a schematic view of a stack-up structure of a display screen of an OLED display is representatively illustrated in fig. 6; FIG. 7 is a schematic diagram of a portion of an OLED display in a first display mode; FIG. 8 is a schematic diagram of a portion of an OLED display in a second display mode; wherein fig. 2, 7 and 8 decibels show in detail the corresponding structures as seen from the back of the OLED display. The following describes in detail representative structures, connection manners and functional relationships of the main components of the OLED display according to the present invention with reference to the above drawings.

As shown in fig. 1 and fig. 2, in this embodiment, the OLED display provided by the invention includes four

display panels

100a, 100b, 100c, 100d. In the OLED display shown in fig. 1 and 2, the four

display panels

100a, 100b, 100c, and 100d are disposed on the same plane and are distributed in a2 × 2 array on the plane. In addition to the above distribution pattern, the slits of the four

display panels

100a, 100b, 100c, 100d adjacent to each other in pairs are substantially cross-shaped, and the shapes of the four

display panels

100a, 100b, 100c, 100d are preferably point-symmetrical with the intersection center of the cross-shaped slits as a point of symmetry in this state. In the present embodiment, the

display panels

100a, 100b, 100c, and 100d are illustrated as being substantially rectangular, and the

display panels

100a, 100b, 100c, and 100d have the same length and width. As shown in fig. 1, in the first display mode, the two

display panels

100a and 100b (100c and 100d) in the same row are disposed with their long sides facing each other, and the two

display panels

100a and 100c (100b and 100d) in the same column are disposed with their short sides facing each other. In contrast, as shown in fig. 2, in the second display mode, the two

display panels

100a and 100b (100c and 100d) in the same row are disposed with their short sides facing each other, and the two

display panels

100a and 100c (100b and 100d) in the same column are disposed with their long sides facing each other.

As shown in fig. 1, 2, 7, and 8, in the present embodiment, two

display panels

100a, 100b (100c, 100d) in the same row share one driver integrated circuit 160(IC) and one flexible circuit board 150 (FPC). Accordingly, the two

display panels

100a, 100b (100c, 100d) in the same row can realize synchronous display. That is, the two

display panels

100a and 100b (100c and 100d) in the same row can realize synchronous display in the display areas of the two

display panels

100a and 100b (100c and 100d) by the above-described design. Specifically, two display areas of the display screen 100a and the display screen 100b in the same row macroscopically provide the overall display effect of one display area, that is, the display area AA1 in the first display mode or the display area AA3 in the second display mode. Meanwhile, the two display areas of the display screen 100c and the display screen 100d in the same row macroscopically provide the overall display effect of the other display area, that is, the display area AA2 in the first display mode or the display area AA4 in the second display mode. Through the design, the OLED display provided by the invention can realize synchronous control on the two display screens in the same row, so that the picture synchronization can be realized on the two display screens in the same row, and the effect of enlarging the area of a display area is achieved. In addition, when the two rows of display screens are overturned by 180 degrees through the overturning shaft, double-sided display of the OLED display can be realized. As shown in fig. 7, in the first display mode, after the two rows of display screens are turned over by 180 °, the OLED display forms a double-sided display structure similar to a square screen, and is more suitable for applications such as video-audio playing and text reading. As shown in fig. 8, in the second display mode, after the two rows of display screens are turned over by 180 °, the OLED display forms a double-sided display structure similar to a bar screen, and is more suitable for applications in narrow spaces of vehicle navigation and the like.

As shown in fig. 1 and 2, in the present embodiment, each display panel has a first corner 101 and a second corner 102 at both ends of a side facing another display panel in the same row, and the first corner 101 and the second corner 102 are respectively distant from and adjacent to the other display panel in the same row. It should be noted that, in the present specification, the above-mentioned positional relationship between the first corner 101 and the second corner 102 is described based on the state of the OLED display in the first display mode, so as to facilitate understanding and description. Specifically, taking the display panel 100a as an example, in the state shown in fig. 1, the display panel 100a faces the side of the display panel 100b in the other row in the same row, and actually is the long side of the display panel 100a. The side of the display screen 100a has two ends respectively distant from and adjacent to the display screen 100c, wherein the end distant from the display screen 100c has a first corner 101, and wherein the end adjacent to the display screen 100c has a second corner 102. It is easily understood that, still taking the display screen 100a as an example, in the state shown in fig. 2, the display screen 100a is a display screen 100b whose short side is opposite to the same row, and at this time, the long side of the display screen 100a is opposite to the display screen 100c in the same column, but the first corner 101 and the second corner 102 of the display screen 100a are still located at both ends of the long side. The first corner 101 and the second corner 102 of the remaining three

display panels

100b, 100c, 100d correspond to the design of the display panel 100a, and are not described herein.

As shown in fig. 1 and 2, in the present embodiment, the two first corners 101 of the two

display panels

100a and 100b (100c and 100d) in the same row are pivotally connected to each other via a set of adapter assemblies 200, and the two second corners 102 of the two

display panels

100a and 100c (100b and 100d) in the same column are pivotally connected to each other via a set of adapter assemblies 200. That is, the OLED display includes four sets of the switching assemblies 200. Specifically, the first corner 101 of the display screen 100a and the first corner 101 of the display screen 100b in the same row are rotatably connected through the first set of adapter assemblies 200, the second corner 102 of the display screen 100a and the second corner 102 of the display screen 100c in the same column are rotatably connected through the second set of adapter assemblies 200, the second corner 102 of the display screen 100b and the second corner 102 of the display screen 100d in the same column are rotatably connected through the third set of adapter assemblies 200, and the first corner 101 of the display screen 100c and the first corner 101 of the display screen 100d in the same row are rotatably connected through the fourth set of adapter assemblies 200. Accordingly, as shown in fig. 3 to fig. 5, the OLED display of the present invention can make the four

display panels

100a, 100b, 100c, and 100d rotate relatively on the plane, and can also make the two rows of display panels turn relatively (fig. 4 is a state after the two rows of display panels in fig. 1 are turned by 180 °, and fig. 5 is a state after the two rows of display panels in fig. 2 are turned by 180 °). Wherein, as shown in fig. 1, the OLED display is flipped about the flipping axis S1 in the first display mode, and as shown in fig. 2, the OLED display is flipped about the flipping axis S2 in the second display mode. Through the design, the OLED display provided by the invention can solve the problem that the flexible OLED is easy to generate defects in the bending process, and can provide a larger and adjustable display area. Compared with the existing flexible OLED design scheme, the flexible OLED display screen can realize that two rows of display screens are turned and folded 180 degrees relatively, can also realize that each display screen rotates on the plane, and can realize another display size when the two rows of display screens are turned and folded 180 degrees relatively after rotating.

Preferably, as shown in fig. 6, in the present embodiment, each display panel may preferably include an OLED substrate 110, an optical adhesive layer 120, a polarizer 130, an upper cover plate 140, a flexible circuit board 150, and a driving integrated circuit 160. Specifically, in the cross-sectional structure of the display panel shown in fig. 6, the OLED substrate 110, the optical adhesive layer 120, the polarizer 130, and the upper cover plate 140 are sequentially stacked from bottom to top. The OLED substrate 110 includes an OLED display structure and an OLED substrate. Optical adhesive layer 120 may preferably be an oca (optical Clear adhesive) optical adhesive. The driving integrated circuit 160 and the flexible circuit board 150 are also located between the OLED substrate 110 and the upper cover plate 140, and the driving integrated circuit 160 is located between the flexible circuit board 150 and the OLED substrate 110. As shown in fig. 1, 2, 7, and 8, in the two

display panels

100a, 100b (100c, 100d) in the same row, the flexible circuit board 150 and the driver ic 160 common to both are connected across the two

display panels

100a, 100b (100c, 100 d).

Further, based on the above-mentioned design of the flexible circuit board 150 bridge, in the present embodiment, the flexible circuit board 150 may be preferably disposed on a flexible substrate. For example, the flexible circuit board 150 may be fabricated on a flexible substrate during the fabrication process of the flexible circuit board 150, and the flexible substrate may form the flexible substrate on the back side of the flexible circuit board 150. Through the design, the flexible circuit board 150 is not easy to break due to structural bending when rotating and overturning.

Further, based on the design in which the flexible circuit board 150 is provided on a flexible substrate, in the present embodiment, the flexible substrate may preferably be made of a polyimide copper foil.

Further, as shown in fig. 7, based on the above-mentioned design of the flexible circuit board 150 bridging, in the present embodiment, the portion of the flexible circuit board 150 bridging between the two display screens is defined as the bridging area SA thereof, and the bridging area SA of the flexible circuit board 150 preferably has a corrugated structure. The corrugated structure may be corrugated, or may be zigzag or irregular.

Further, based on the design of the driver integrated circuit 160 crossover described above, in the present embodiment, the driver integrated circuit 160 may be preferably disposed on another flexible substrate. For example, the driving integrated circuit 160 may be fabricated on another flexible substrate during the fabrication process of the driving integrated circuit 160, and the flexible substrate may form the flexible substrate on the back side of the driving integrated circuit 160. Through the above design, the present invention can make the driving integrated circuit 160 less prone to fracture due to structural bending during rotation and inversion.

Further, based on the design in which the driver integrated circuit 160 is provided on the flexible substrate, in the present embodiment, the flexible substrate may be preferably made of a polyimide copper foil.

Further, as shown in fig. 7, based on the design of the bridge of the driving integrated circuit 160, in the present embodiment, the part of the driving integrated circuit 160 that bridges between the two display panels is defined as the bridge area SA, and the bridge area SA of the driving integrated circuit 160 preferably has a corrugated structure. The corrugated structure may be corrugated, or may be zigzag or irregular.

Further, as shown in fig. 6, based on the above-mentioned stacked structure of the OLED substrate 110, the optical adhesive layer 120, the flexible circuit board 150 and the driving ic 160 of the display panel, in the present embodiment, the switching assembly 200 connected between the two

display panels

100a and 100b (100c and 100d) in the same row may preferably include two rotating shafts 210 and one elastic link 220. Specifically, one end of each of the rotation shafts 210 is fixed to the lower surface (back surface) of the driving integrated circuit 160, and the other end thereof extends out of the back surface of the display screen. The elastic link 220 is located on the back of the display screen, and two ends of the elastic link 220 are respectively rotatably connected to the two rotating shafts 210. The elastic link 220 may be preferably made of an elastic material, which may include a high polymer material, such as elastic rubber, and has high elasticity and reversible deformation characteristics. In the above description, taking a set of adapter assemblies 200 connected between the display panel 100a and the display panel 100b as an example, one of the rotation shafts 210 of the adapter assemblies 200 is fixed to the lower surface of the portion of the common driving ic 160 corresponding to the first corner 101 of the display panel 100a, and the other rotation shaft 210 is fixed to the lower surface of the portion of the common driving ic 160 corresponding to the first corner 101 of the display panel 100b. In addition, when the driving ic 160 is disposed on a flexible substrate, the shaft 210 of the adapter module 200 is actually fixed on the lower surface of the flexible substrate of the driving ic 160.

Further, as shown in fig. 6, based on the design that the rotating shaft 210 of the adaptor assembly 200 is fixed on the lower surface of the driving integrated circuit 160, in the present embodiment, the lower surface of the driving integrated circuit 160 may be preferably provided with a UV glue layer 170(Ultraviolet glue, shadowless glue, also called photosensitive glue, Ultraviolet curing glue), and on this basis, the rotating shaft 210 may be preferably fixed on the lower surface of the driving integrated circuit 160 through the UV glue layer 170. In addition, a UV glue layer 170 may be disposed in a gap between the driving integrated circuit 160 and the flexible circuit board 150 and the polarizer 130.

Further, as shown in fig. 1, 2, 6 to 8, based on the design that the adapter assembly 200 comprises two rotating shafts 210 and one elastic connecting rod 220, in the present embodiment, the end of the rotating shaft 210 protruding out of the back of the display screen may be preferably provided with a limiting end 211, and the limiting end 211 is expanded to form a structure such as a nut. The two ends of the elastic connecting rod 220 are respectively provided with a sleeve ring 221, the inner diameter of the sleeve ring 221 is preferably smaller than or equal to the outer diameter of the limiting end 211, and the two sleeve rings 221 of the elastic connecting rod 220 are respectively sleeved on the two rotating shafts 210, so that the sleeve rings 221 are limited between the back of the display screen and the limiting end 211.

Further, based on the above-mentioned stacked structure of the OLED substrate 110, the optical adhesive layer 120, the flexible circuit board 150 and the driving ic 160 of the display panel, in the present embodiment, the switching assembly 200 connected between the two

display panels

100a and 100c (100b and 100d) in the same row may preferably adopt a design similar to the switching assembly 200 connected between the two

display panels

100a and 100b (100c and 100d) in the same row, that is, may also include two rotating shafts 210 and one elastic link 220, which is different in that: one end of each rotating shaft 210 is fixed on the lower surface of the OLED substrate 110, and the other end thereof extends downward from the lower surface of the OLED substrate 110, i.e., extends out of the back of the display screen.

It should be noted that, when the adapter assembly 200 adopts a design including two rotation shafts 210 and the elastic link 220, in other embodiments, regardless of the specific stacking structure of the display screen, the fixing positions of the two rotation shafts 210 of the adapter assembly 200 can be selected from other positions of the stacking structure of the display screen, and of course, the distribution positions of the rotation shafts 210 on the plane should be located at the first corner 101 or the second corner 102. In addition, the hinge 210 preferably extends downward from the back of the display screen to avoid affecting the normal display of the display area on the front of the display screen. The elastic link 220 is preferably located at the back of the display screen, and both ends of the elastic link 220 are rotatably connected to the two rotation shafts 210, respectively.

It should be noted herein that the OLED displays shown in the drawings and described in this specification are but a few examples of the wide variety of OLED displays that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are in no way limited to any of the details of the OLED display or any of the components of the OLED display shown in the drawings or described in this specification.

Exemplary embodiments of the OLED display proposed by the present invention are described and/or illustrated in detail above. Embodiments of the invention are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or step of one embodiment can also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. described and/or illustrated herein, the articles "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and the description are used merely as labels, and are not numerical limitations of their objects.

While the OLED display proposed by the present invention has been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.

Claims

1. The OLED display is characterized by comprising four display screens distributed in a2 x 2 array shape on a plane, wherein two display screens in the same row share one driving integrated circuit and one flexible circuit board to realize synchronous display; two ends of the side edge of each display screen facing to the other display screen in the same row are respectively provided with a first corner part and a second corner part, and the first corner part and the second corner part are respectively far away from and close to the other row of display screens; two first corners of two display screens in the same row are rotatably connected through a group of switching components, and two second corners of two display screens in the same column are rotatably connected through a group of switching components; wherein the OLED display is configured to enable four pieces of the display screens to relatively rotate on the plane, and is configured to enable two rows of the display screens to relatively turn over.

2. The OLED display of claim 1, wherein each of the display screens comprises an OLED substrate, an upper cover plate, the flexible circuit board, and the driving integrated circuit, the driving integrated circuit being located between the flexible circuit board and the OLED substrate; and in the two display screens in the same row, the shared flexible circuit board and the drive integrated circuit are bridged between the two display screens.

3. The OLED display of claim 2, wherein the flexible circuit board is configured to be disposed over a flexible substrate; and/or the driving integrated circuit is configured to be arranged on the flexible substrate.

4. The OLED display claimed in claim 3, wherein the flexible substrate is made of polyimide copper foil.

5. The OLED display according to claim 2, wherein the portion of the flexible circuit board spanning between the two display screens has a corrugated structure; and/or the part of the driving integrated circuit, which is bridged between the two display screens, is provided with a corrugated structure.

6. The OLED display device claimed in claim 2, wherein the switching assembly connected between two display panels in the same row comprises:

one end of each rotating shaft is fixed on the lower surface of the driving integrated circuit, and the other end of each rotating shaft extends out of the back surface of the display screen; and

and the elastic connecting rod is positioned on the back of the display screen, and two ends of the elastic connecting rod are respectively and rotatably connected with the two rotating shafts.

7. The OLED display of claim 6, wherein a UV adhesive layer is disposed on a lower surface of the driving IC, and the hinge is configured to be fixed to the driving IC through the UV adhesive layer.

8. The OLED display device claimed in claim 2, wherein the switching assembly connected between two display panels in the same column comprises:

each rotating shaft is fixed and extends out of the lower surface of the OLED substrate, namely extends out of the back of the display screen; and

9. The OLED display of claim 1, wherein the switching assembly comprises:

the two rotating shafts are respectively fixed and extend out of the back sides of the two display screens; and

10. The OLED display according to claim 9, wherein a limiting end is disposed at an end of the rotating shaft extending out of the back surface of the display screen, two ends of the elastic connecting rod are respectively provided with a sleeve ring, the two sleeve rings of the elastic connecting rod are respectively sleeved on the two rotating shafts, and the sleeve rings are limited between the back surface of the display screen and the limiting end.