CN113261040A

CN113261040A - Stretchable display panel, display device and manufacturing method of display panel

Info

Publication number: CN113261040A
Application number: CN201980073006.2A
Authority: CN
Inventors: 周啟华; 林俊仪
Original assignee: Shenzhen Royole Technologies Co Ltd
Current assignee: Shenzhen Royole Technologies Co Ltd
Priority date: 2019-03-21
Filing date: 2019-03-21
Publication date: 2021-08-13
Also published as: WO2020186500A1

Abstract

A stretchable display panel (100), the stretchable display panel (100) comprises a substrate layer (10) and a device layer (20), the substrate layer (10) comprises a plurality of bearing parts (12) arranged at intervals and connecting parts (14) connected between the adjacent bearing parts (12), the device layer (20) is arranged on the bearing parts (12), the thickness of the bearing parts (12) is larger than that of the connecting parts (14), and when the stretchable display panel (100) is stretched, the connecting parts (14) deform. A display device and a method of manufacturing a stretchable display panel (100) are also provided. When the stretchable display panel (100) is stretched under stress, the connecting part (14) deforms and is stretched, the deformation of the bearing part (12) is small, the stretching effect is good, the influence of stretching on the device layer (20) on the bearing part (12) is small, and the display effect of the stretchable display panel (100) is not influenced.

Description

Stretchable display panel, display device and manufacturing method of display panel

Technical Field

The present application relates to the field of electronic devices, and in particular, to a stretchable display panel, a display device, and a method for manufacturing the display panel.

Background

Display devices such as mobile phones are common electronic devices in life, and people have increasingly kept away from the display devices. With the progress of technology, the application of the flexible display device is more and more extensive, and the flexible display device has the characteristic of being foldable, so that the flexible display device is convenient to carry and has a wide application range. In the prior art, the stretchable flexible display device affects devices on the display panel after stretching, thereby affecting the display effect and even possibly damaging the display panel of the devices.

Disclosure of Invention

The technical problem to be solved in the application is to provide a stretchable display panel, a display device and a manufacturing method of the display panel, so as to solve the problem that the stretching effect of a flexible display device in the prior art is not good.

In order to solve the above technical problem, on the one hand, the present application provides a stretchable display panel, the stretchable display panel includes a substrate layer and a device layer, the substrate layer includes the bearing part that a plurality of intervals set up, and connect in adjacent connecting portion between the bearing part, the device layer set up in on the bearing part, the thickness of bearing part is greater than the thickness of connecting portion, when stretching the stretchable display panel, connecting portion take place deformation.

On the other hand, the display device comprises a driving device and a stretchable display panel, wherein the driving device is electrically connected with the stretchable display panel to drive the stretchable display panel to display.

In another aspect, a method for manufacturing a display panel is provided, including:

coating an elastic material on a substrate;

patterning the elastic material to form a substrate layer, wherein the substrate layer comprises a plurality of bearing parts arranged at intervals and connecting parts connected between the adjacent bearing parts, and the thickness of each bearing part is larger than that of each connecting part;

and manufacturing the device layer on the bearing part.

The beneficial effects of the above technical scheme are as follows: can tensile display panel atress when being stretched, connecting portion deformation and elongated, the deformation of bearing part is little, and tensile effect is good, and the device layer on the bearing part receives tensile influence little, does not influence display panel's display effect.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a top view of a stretchable display panel according to an embodiment of the present application.

Fig. 2 is a cross-sectional view of a stretchable display panel according to an embodiment of the present application.

Fig. 3 is a schematic diagram illustrating deformation of the stretchable display panel when the stretchable display panel is stretched from two sides.

FIG. 4 is a cross-sectional view of one embodiment of a stretchable display panel.

Fig. 5 is a cross-sectional view of another embodiment of a stretchable display panel.

FIG. 6 is a cross-sectional view of another embodiment of a stretchable display panel.

Fig. 7 is a cross-sectional view of another embodiment of a stretchable display panel.

FIG. 8 is a top view of another embodiment of a stretchable display panel.

FIG. 9 is a top view of another embodiment of a stretchable display panel.

Fig. 10 is a cross-sectional view of a stretchable display panel according to the second embodiment of the present application.

Fig. 11 is a flowchart of a method for manufacturing a display panel according to an embodiment of the present application.

Detailed Description

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

The present disclosure provides a stretchable display panel, and particularly, the stretchable display panel includes, but is not limited to, an Organic Light-Emitting Diode (OLED) display panel, such as a passive matrix Organic Light-Emitting Diode (PMOLED) display panel or an active matrix Organic Light-Emitting Diode (AMOLED) display panel, and further, the stretchable display panel may be deformed to increase a dimension perpendicular to a thickness direction after being subjected to an external force. In fact, the stretchable display panel may be stretched to be in different use states, such as a flat state in which the display area is enlarged, a bent or folded state in which the display area is bent at a certain angle, a rolled state in which the display area is continuously bent, and the like, according to the direction of the external force applied to the stretchable display panel.

Referring to fig. 1 and fig. 2 together, fig. 1 is a top view of a stretchable display panel according to an embodiment of the present disclosure, and fig. 2 is a cross-sectional view of the stretchable display panel according to the embodiment of the present disclosure. In this embodiment, the stretchable display panel 100 includes a substrate layer 10 and a device layer 20, the substrate layer 10 includes a plurality of bearing portions 12 disposed at intervals, and a connection portion 14 connected between adjacent bearing portions 12, the device layer 20 is disposed on the bearing portions 12, a thickness of the bearing portion 12 is greater than a thickness of the connection portion 14, and the connection portion 14 deforms when the stretchable display panel 100 is stretched. In this embodiment, the base layer 10 is a film formed of a stretchable material, and the stretchable material is patterned to form the carrier portion 12 and the connecting portion 14. Specifically, the base layer 10 is a film formed on a substrate, and in one embodiment, the stretchable material is Polydimethylsiloxane (PDMS), and during the formation of the base layer 10, the PDMS is coated on the substrate, and then after a dry etching (coating photoresist, exposing, developing, removing photoresist) process, the patterned base layer 10, i.e., the bearing portion 12 and the connection portion 14, is formed. In this embodiment, the connection portion 14 is connected to the bottom end of the bearing portion 12, so as to connect the adjacent bearing portions 12 to each other, the thickness direction of the stretchable display panel 100 is a direction perpendicular to the display surface of the stretchable display panel 100, the device layer 20 is stacked on the bearing portion 12 in the thickness direction, further, the device layer 20 is a layer structure on the stretchable display panel 100 for implementing a display function or a touch function, and the device layer 20 may include a Thin Film Transistor (TFT), an organic light emitting diode (oled), and the like. In the present embodiment, the device layer 20 is a plurality of film layers stacked and patterned on the carrier 12, and the device layer 20 on each carrier 12 can operate independently, for example, the thin film transistor 22 of each device layer 20 can control the switch individually, so that each organic light emitting diode 24 can be controlled to emit light individually to display different images in combination.

Referring to fig. 3, fig. 3 is a schematic diagram illustrating deformation of the stretchable display panel 100 when the stretchable display panel 100 is stretched from two sides. In this embodiment, the direction of the external force applied to the stretchable display panel 100 is parallel to the display surface of the stretchable display panel 100. Specifically, because the thickness of the connecting portion 14 is smaller than the thickness of the bearing portion 12, the connecting portion 14 deforms greatly in the force-receiving direction, and the distance between adjacent bearing portions 12 increases, so that the size of the stretchable display panel 100 increases, and specifically, the stretchable display panel 100 is unfolded on the plane of the display surface, so that a larger display area can be provided, and different use requirements can be met. Furthermore, when the stretchable display panel is stretched under stress, the connecting portion 14 deforms and is stretched, the deformation of the bearing portion 12 is small, the stretching effect is good, the influence of the stretching on the device layer 20 on the bearing portion 12 is small, and the display effect of the display panel is not influenced.

Referring to fig. 1 and fig. 2, in one embodiment, a plurality of carrier portions 12 are arranged on a substrate in an array, specifically, the cross section of each carrier portion 12 is rectangular or square, the carrier portions 12 are arranged in a first direction X and a second direction Y at equal intervals, the first direction X is perpendicular to the second direction Y, the connection portion 14 includes a first connection section 142 and a second connection section 144, the first connection section 142 extends along the first direction X, and the second connection section 144 extends along the second direction Y. The device layers 20 on the carrier 12 are also distributed in an array, so that the stretchable display panel 100 emits light uniformly and displays images with good effect. Furthermore, the bearing parts 12 distributed in an array enable the stretchable display panel 100 to be stressed uniformly when deformed by stress, and the deformation effect is good. In other embodiments, the carrier portions 12 may be arranged in other ways through different patterning operations, for example, the pitch of the carrier portions 12 varies according to the position of the carrier portion 12 from the driving chip, or the cross section of the carrier portion 12 is triangular, and the adjacent carrier portions 12 are distributed axisymmetrically.

Referring to fig. 1 and 2, in the present embodiment, the device layer 20 includes a thin film transistor 22, and the stretchable display panel 100 further includes a scan line 42 and a data line 44, the thin film transistor includes a gate 22c, a first end 22a, and a second end 22b, wherein the first end 22a is a source and the second end 22b is a drain; alternatively, the first end 22a is a drain and the second end 22b is a source. The scan line 42 is electrically connected to the gate 22c of the thin film transistor 22, the data line 44 is electrically connected to the first end 22a of the thin film transistor 22, the orthographic projection of the scan line 42 on the base layer 10 is located on the carrier 12, and the orthographic projection of the data line 44 on the base layer 10 is located on the carrier 12. Specifically, the thin film transistor 22 includes an active layer, a gate insulating layer, a gate electrode 22c, and a source electrode and a drain electrode electrically connected to both ends of the active layer, respectively, which are stacked in this order. The scan line 42 is connected to the gate electrode 22c to supply a scan signal to the gate electrode 22c, and the data line 44 is connected to the source or drain electrode to supply a data signal to the source or drain electrode. In this embodiment, the number of the scan lines 42 is multiple, the scan lines 42 extend along the first direction X or the second direction Y, and the scan lines 42 are partially located on the carrier 12 and partially located on the connection portion 14, so that when the stretchable display panel 100 is stretched, since the carrier 12 is not deformed, the portions of the scan lines 42 located on the carrier 12 are not stretched, and the scan lines 42 are prevented from being broken due to being stretched excessively. Further, the number of the data lines 44 is plural, the data lines 44 extend along the first direction X or the second direction Y, the non-extending direction of the data lines 44 is perpendicular to the scan lines 42, the data lines 44 are partially disposed on the carrier portion 12 and partially disposed on the connecting portion 14, so that when the stretchable display panel 100 is stretched, since the carrier portion 12 is not deformed, the portion of the data lines 44 disposed on the carrier portion 12 is not stretched, and the data lines 44 are prevented from being broken due to being stretched excessively.

Referring to fig. 2, in the present embodiment, the stretchable display panel 100 further includes a buffer layer 50, and the buffer layer 50 is located between the carrier 12 and the tft 22 to isolate the carrier 12 from the tft 22. Specifically, the buffer layer 50 is an insulating material to prevent devices such as the thin film transistor 22 of the device layer 20 from contacting with the outside, and in fact, the buffer layer 50 is also used for isolating external moisture and the like to prevent the external environment from affecting the device layer 20.

Referring to fig. 2, in the present embodiment, the device layer 20 further includes an organic light emitting diode 24 disposed on the thin film transistor 22, the organic light emitting diode 24 is electrically connected to the second end 22b of the thin film transistor 22, and the thin film transistor 22 controls the organic light emitting diode 24 to emit light. Specifically, the organic light emitting diode 24 includes an anode, a light emitting layer, a cathode, and the like, which are sequentially stacked, and the anode is connected to the source or the drain of the thin film transistor 22 to receive a signal of the data line 44. In one embodiment, the organic light emitting diodes 24 may be stacked on the thin film transistors 22, so that the size of the orthographic projection of the device layer 20 on the carrier 12 is smaller, the stretchable display panel 100 may be designed to have a smaller carrier 12, and the stretchable display panel 100 having the same size may be provided with a larger number of carriers 12 and organic light emitting diodes 24, so that the display effect of the stretchable display panel 100 is good. In other embodiments, the organic light emitting diode 24 may be located on one side of the thin film transistor 22.

In one embodiment, each of the supporting portions 12 may be provided with one thin film transistor 22 and one organic light emitting diode 24 to correspond to one pixel, and in other embodiments, each of the supporting portions 12 may be provided with a plurality of thin film transistors 22 and a plurality of organic light emitting diodes 24 to correspond to a plurality of pixels.

Referring to fig. 2, in the embodiment, the carrier portion 12 includes a first end surface 12a and a second end surface 12b that are disposed opposite to each other, the device layer 20 is located on one side of the second end surface 12b, and an orthographic projection of the second end surface 12b on a plane where the first end surface 12a is located within a range of the first end surface 12 a. Specifically, the first end face 12a is a bottom face of the carrying portion 12, the second end face 12b is a top face of the carrying portion 12, and a size of the top face is smaller than a size of the bottom face, on one hand, the carrying portion 12 is more stable in structure, and is convenient for carrying the device layer 20, on the other hand, since the connecting portion 14 is connected to a bottom position of the carrying portion 12, when the stretchable display panel 100 is stretched, the connecting portion 14 pulls the bottom position, and the bottom position is large in size and is less affected by stretching of the connecting portion 14, so that deformation of the carrying portion 12 is small, and the device layer 20 is less affected. In one embodiment, the longitudinal cross-sectional shape of the supporting portion 12 is a trapezoid, further, the longitudinal cross-sectional shape of the supporting portion 12 is an isosceles trapezoid, the top surface of the connecting portion 14 and the second end surface 12b are connected by an inclined surface 12c, taking one supporting portion 12 as an example, when the connecting portion 14 at two sides of the supporting portion 12 applies a pulling force to the supporting portion 12 from the bottom position of the supporting portion 12, the bottom of the supporting portion 12 is slightly deformed, and along the direction from the first end surface 12a to the second end surface 12b, the deformation of the supporting portion 12 is gradually reduced, and the position of the second end surface 12b is not deformed, so that the device layer 20 on the second end surface 12b is not affected by the stretching of the stretchable display panel 100, and the device layer 20 can normally operate without being damaged.

Referring to fig. 1 and 4, in an embodiment, an arch 62 is disposed on the inclined plane 12c of the top surface of the connecting portion 14, the scan line 42 or the data line 44 is partially disposed on the inclined plane 12c, and the scan line 42 or the data line 44 is partially disposed on the arch 62, and a portion of the scan line 42 or the data line 44 that is partially disposed on the arch 62 is in a curved shape, so that when the stretchable display panel 100 is stretched, a portion of the scan line 42 or the data line 44 that is disposed on the arch 62 is straightened to a certain extent, so as to prevent the scan line 42 or the data line 44 from being pulled apart, in other words, a portion of the scan line 42 or the data line 44 that is disposed on the arch 62 provides a certain stretching margin.

Referring to fig. 5, in one embodiment, the second end surface 12b is recessed inward to form a receiving groove 70, and the device layer 20 is at least partially located in the receiving groove 70. Specifically, the accommodating groove 70 is formed by patterning when the substrate layer 10 is formed, and the device layer 20 is disposed in the groove, so that the overall thickness of the stretchable display panel 100 can be reduced, and the design of the stretchable display panel 100 that is light and thin is facilitated.

Referring to fig. 1 and fig. 6, in one embodiment, the connecting portion 14 includes a third end surface 14a and a fourth end surface 14b disposed opposite to each other, and the scan line 42 and the data line 44 are partially disposed on the fourth end surface 14 b. Specifically, the third end surface 14a is a bottom surface of the connecting portion 14, and the fourth end surface 14b is a top surface of the connecting portion 14. In the present embodiment, the fourth end surface 14b is provided with the arch 64, and the scan line 42 and the data line 44 are partially positioned on the arch 64, so that the scan line 42 and the data line 44 have a stretchable margin. Specifically, the portion of the scan line 42 or the data line 44 located on the arch 64 is in a curved shape, and when the stretchable display panel 100 is stretched, the portion of the scan line 42 or the data line 44 located on the arch 64 is straightened to a certain extent, so as to prevent the scan line 42 or the data line 44 from being pulled apart.

Referring to fig. 2, in the present embodiment, the third end surface 14a is flush with the first end surface 12a, and a vertical distance between the fourth end surface 14b and the third end surface 14a is smaller than a vertical distance between the second end surface 12b and the first end surface 12 a. Specifically, after the stretchable material is coated on the substrate, in the process of patterning the stretchable material to form the base layer 10, channels are formed in the base layer 10, and the portions of the base layer 10 corresponding to the remaining channels form the connection portions 14. It is also understood that the channel is formed by recessing the substrate layer 10 from the second end face 12b, and the substrate layer 10 forms the connecting portion 14 corresponding to the position of the channel. The connecting portion 14 and the bearing portion 12 are formed in a simple manner, the patterning process is simple and easy to implement, and the formed bearing portion 12 and the connecting portion 14 are stable.

Referring to fig. 7, in one embodiment, the thickness of the connecting portion 14 gradually decreases from the edge of the connecting portion 14 to the middle. On the one hand, the overall thickness of the connecting portion 14 is reduced, and when the stretchable display panel 100 is stretched, the connecting portion 14 is more easily deformed and elongated, so that the stretching effect is improved, correspondingly, the deformation amount of the bearing portion 12 is further reduced, and on the other hand, the phenomenon that the connecting portion 14 is too low in thickness to cause the connecting portion 14 to be broken after being stretched is avoided.

Referring to fig. 8, in one embodiment, the connection portion 14 includes a first connection section 142 extending along a first direction X and a second connection section 144 extending along a second direction Y, and a hollow hole 82 is formed at a junction of the first connection section 142 and the second connection section 144. Specifically, the first connecting section 142 and the second connecting section 144 are perpendicular to each other, and taking four adjacent carrying parts 12 as an example, the connecting part 14 connected to the upper and lower carrying parts 12 is the first connecting section 142, when the stretchable display panel 100 is stretched, the first connecting segment 142 is elongated in the second direction Y, the connecting portions 14 connected to the left and right carrying portions 12 are the second connecting segments 144, when the stretchable display panel 100 is stretched, the second connection segments 144 are elongated in the first direction X, so that, at the intersection of the first connecting section 142 and the second connecting section 144, the connecting portion 14 is elongated in both the first direction X and the second direction Y, the hollow hole 82 is disposed at the joint of the first connecting section 142 and the second connecting section 144, so that the position can be prevented from being greatly deformed due to pulling forces in multiple directions, and the overall stretching effect of the stretchable display panel 100 can be improved.

Referring to fig. 9, in one embodiment, the connecting portion 14 has a plurality of through holes 84 penetrating through the connecting portion 14, and the through holes 84 divide the connecting portion 14 into a plurality of connecting sections arranged at intervals. Specifically, the through hole 84 reduces the volume of the material of the connecting portion 14, and the connecting portion 14 is more easily stretched and deformed, so as to improve the stretching effect, and correspondingly, the deformation amount of the bearing portion 12 is further reduced, and meanwhile, the influence of the design of the through hole 84 on the strength of the connecting portion 14 is small, and the connecting portion 14 is prevented from being broken after being stretched.

In one embodiment, the substrate layer 10 is made of an elastic material, and the stretchable display panel 100 can be restored to its original state and size after the force applied to the stretchable display panel 100 is removed, so that the stretchable display panel 100 can have a plurality of working states and can be stretched repeatedly without being damaged.

When the stretchable display panel is stressed and stretched, the connecting part 14 deforms and is stretched, the deformation of the bearing part 12 is small, the stretching effect is good, the stretching influence on the device layer 20 on the bearing part 12 is small, and the display effect of the display panel is not influenced.

Referring to fig. 10, a stretchable display panel 100 provided in the second embodiment of the present application is substantially the same as the first embodiment, except that the fourth end surface 14b is flush with the second end surface 12b, and the stretchable display panel 100 further includes a spacer 90, where the spacer 90 is located at one side of the connection portion 14 to support the connection portion 14. Specifically, in this embodiment, the fourth end surface 14b is flush with the second end surface 12b, that is, the top surface of the connecting portion 14 is coplanar with the top surface of the carrying portion 12, and the scan line 42 and the data line 44 are located on the flat surface, which is beneficial to the manufacturing of the scan line 42 and the data line 44 and the signal transmission effect. Further, the spacer 90 is made of an insulating material. The spacer strips 90 serve to support the connecting portion 14 and facilitate the fabrication of the connecting portion 14. When the stretchable display panel 100 is stretched, the connection portions 14 are elongated, the spacer bars 90 are not deformed by force, and the spacer bars 90 serve only to support the connection portions 14.

In one embodiment, the fourth end surface 14b is provided with a bulge, and the scan lines 42 and the data lines 44 are partially positioned on the bulge to allow the scan lines 42 and the data lines 44 to have a stretchable margin. Specifically, the portion of the scan line 42 or the data line 44 on the arch is in a curved shape, and when the stretchable display panel 100 is stretched, the portion of the scan line 42 or the data line 44 on the arch is straightened to a certain extent, so as to prevent the scan line 42 or the data line 44 from being pulled apart.

In one embodiment, the thickness of the connecting portion 14 decreases uniformly from being closer to the carrier portion 12 to being farther from the carrier portion 12. Specifically, the thickness of the connection portion 14 gradually decreases from the edge position to the middle position of the connection portion 14. On the one hand, the overall thickness of the connecting portion 14 is reduced, and when the stretchable display panel 100 is stretched, the connecting portion 14 is more easily deformed and elongated, so that the stretching effect is improved, correspondingly, the deformation amount of the bearing portion 12 is further reduced, and on the other hand, the phenomenon that the connecting portion 14 is too low in thickness to cause the connecting portion 14 to be broken after being stretched is avoided.

The embodiment of the present application further provides a display device, the display device includes a driving device and the stretchable display panel 100 provided in the embodiment of the present application, and the driving device is electrically connected to the stretchable display panel 100 to drive the stretchable display panel 100 to display. According to the direction of the external force applied to the stretchable display panel 100, the display device may be in different use states after the stretchable display panel 100 is stretched, such as a flat state in which the display surface is enlarged, a bent or folded state in which the display device is bent at a certain angle, a rolled state in which the display device is continuously bent, and the like.

Referring to fig. 11, an embodiment of the present application further provides a method for manufacturing a display panel, which is used to manufacture the stretchable display panel provided in the embodiment of the present application. Specifically, the manufacturing steps of the display panel comprise the following steps:

s101, coating an elastic material on the substrate.

In one embodiment, the substrate is coated with PDMS with a thickness of 20um, and the PDMS has a stretchable characteristic.

S102, patterning the elastic material to form a base layer, wherein the base layer comprises a plurality of bearing parts arranged at intervals and connecting parts connected between the adjacent bearing parts, and the thickness of each bearing part is larger than that of each connecting part.

In this embodiment, after a dry etching (coating photoresist, exposing, developing, removing photoresist) process, the patterned base layer, i.e., the carrier portion and the connecting portion, is formed. In this embodiment, the connecting portion is connected to the bottom end of the bearing portion, so as to connect the adjacent bearing portions to each other, the thickness direction of the stretchable display panel is a direction perpendicular to the display surface of the stretchable display panel, and the device layers are stacked on the bearing portion in the thickness direction.

In one embodiment, the elastic material is dry etched to form a channel, and the base layer forms the connection portion corresponding to the channel. Specifically, the etching degree of depth can be 10um to form the connecting portion that thickness is 10um and the bearing part that thickness is 20um, be favorable to connecting portion atress tensile on the one hand, on the other hand does not arouse bearing part deformation.

The plurality of bearing parts are arrayed on the substrate, specifically, the orthographic projection of the bearing parts on the substrate is rectangular or square, the bearing parts are arrayed at equal intervals in a first direction and a second direction, the first direction is perpendicular to the second direction, the connecting part comprises a first connecting section and a second connecting section, the first connecting section extends along the first direction, and the second connecting section extends along the second direction. The device layers on the bearing parts distributed in an array are also distributed in an array mode, the stretchable display panel is uniform in light emitting, and the displayed image effect is good. Furthermore, the bearing parts distributed in the array enable the stretchable display panel to be stressed uniformly when deformed under stress, and the deformation effect is good. In other embodiments, the carrier portions may be arranged in other ways through different patterning operations, for example, the pitch of the carrier portions varies according to the distance from the driver chip to the carrier portions, or the orthogonal projection of the carrier portions on the substrate is triangular, and the adjacent carrier portions are distributed axisymmetrically. In this embodiment, the third end surface is flush with the first end surface, and a vertical distance between the fourth end surface and the third end surface is smaller than a vertical distance between the second end surface and the first end surface. Specifically, after the stretchable material is coated on the substrate, in the process of patterning the stretchable material to form the base layer, the channels are formed in the base layer, and the portions of the base layer, which correspond to the remaining channels, form the connection portions. It is also understood that the channel is formed by recessing the base layer from the second end surface, and the base layer forms the connecting portion corresponding to the position of the channel. The mode of forming connecting portion and bearing portion is simple, and the patterning technology is simple easily to realize, and bearing portion and connecting portion after forming are firm. In this embodiment, the carrier portion includes a first end surface and a second end surface that are disposed opposite to each other, the first end surface faces the substrate, the device layer is located on one side of the second end surface, and an orthographic projection of the second end surface on the substrate is located within an orthographic projection range of the first end surface on the substrate. Specifically, first terminal surface is the bottom surface of bearing part, and the second terminal surface is the top surface of bearing part, and the size of top surface is less than the size of bottom surface, and on the one hand, the bearing part structure is more stable, is convenient for bear the weight of the device layer, and on the other hand, because connecting portion connect in the bottom position of bearing part, when the display panel that can stretch receives tensile, bottom position is dragged to connecting portion, and bottom position size is great and receive the tensile influence of connecting portion less to the deformation of bearing part is less, and the influence that the device layer received is little. In one embodiment, the longitudinal cross-sectional shape of the bearing portion is a trapezoid, further, the longitudinal cross-sectional shape of the bearing portion is an isosceles trapezoid, the top surface of the connecting portion and the second end surface are connected by an inclined surface, for example, when the connecting portions on both sides of the bearing portion apply a tensile force to the bearing portion from the bottom position of the bearing portion, the bottom of the bearing portion is slightly deformed, and along the direction from the first end surface to the second end surface, the deformation of the bearing portion is gradually reduced, and the second end surface is not deformed, so that the device layer on the second end surface is not affected by the stretching of the stretchable display panel, and the device layer can normally operate without being damaged.

In another embodiment, before the step of "coating the elastic material on the substrate", the manufacturing method includes manufacturing spacer strips arranged at intervals on the substrate, and the elastic material is partially coated on the spacer strips. In this embodiment, the fourth end surface is flush with the second end surface, and the stretchable display panel further includes a spacer strip located between the substrate and the connecting portion to support the connecting portion. Specifically, in this embodiment, the fourth end surface is flush with the second end surface, that is, the top surface of the connecting portion is coplanar with the top surface of the supporting portion, and the scanning line and the data line are located on a flat surface, which is beneficial to the manufacturing of the scanning line and the data line and the signal transmission effect. Furthermore, the spacer strips are made of insulating materials and fixed on the substrate, and the spacer strips are not fixed with the connecting parts. The spacer bars are used for supporting the connecting parts and are beneficial to manufacturing the connecting parts. When the stretchable display panel is stretched, the connection portions are elongated, the spacer bars are not deformed by force, and the spacer bars are only used to support the connection portions.

S103, manufacturing a device layer on the bearing part.

In one embodiment, before the "fabricating the device layer on the carrier", the fabricating method further includes fabricating a buffer layer on the carrier. Specifically, the buffer layer is insulating material to prevent devices such as thin film transistors on the device layer from contacting with the outside, and in fact, the buffer layer is also used for isolating external water vapor and the like, and preventing the influence of the external environment on the device layer.

In this embodiment, the device layer includes a thin film transistor, the stretchable display panel further includes a scan line and a data line, the scan line is electrically connected to a gate of the thin film transistor, the data line is electrically connected to a source or a drain of the thin film transistor, an orthogonal projection portion of the scan line on the substrate layer is located on the carrying portion, and an orthogonal projection portion of the data line on the substrate layer is located on the carrying portion. Specifically, the thin film transistor includes an active layer, a gate insulating layer, a gate electrode, and a source electrode and a drain electrode electrically connected to both ends of the active layer, respectively, which are sequentially stacked on the substrate. The scan line is connected to the gate electrode to provide a scan signal to the gate electrode, and the data line is connected to the source electrode or the drain electrode to provide a data signal to the source electrode or the drain electrode. In this embodiment, the number of the scan lines is multiple, the scan lines extend along the first direction or the second direction, the scan lines are partially located on the carrying portion, and the scan lines are partially located on the connecting portion, so that when the stretchable display panel is stretched, the carrying portion is not deformed, and the scan lines are partially not stretched on the carrying portion, thereby preventing the scan lines from being broken due to over-stretching. Furthermore, the number of the data lines is multiple, the data lines extend along the first direction or the second direction, the non-extension direction of the data lines is perpendicular to the scanning lines, the data lines are partially located on the bearing part and partially located on the connecting part, so that when the stretchable display panel is stretched, the bearing part is not deformed, and the part of the data lines located on the bearing part is not stretched, so that the situation that the data lines are broken due to over-stretching is avoided.

In this embodiment, the device layer further includes an organic light emitting diode disposed on the thin film transistor, and the thin film transistor controls the organic light emitting diode to emit light. Specifically, the organic light emitting diode includes an anode, a light emitting layer, a cathode, and the like, which are sequentially stacked, and the anode is connected to a source or a drain of the thin film transistor to receive a signal of the data line, and the light emitting layer is self-luminous according to a potential difference between the anode and the cathode. In one embodiment, the organic light emitting diodes may be stacked on the thin film transistor, so that the size of the orthographic projection of the device layer on the bearing portion is smaller, the stretchable display panel may be designed to have a smaller bearing portion, the stretchable display panel with the same size may be provided with a larger number of bearing portions and organic light emitting diodes, and the stretchable display panel has a good display effect. In other embodiments, the organic light emitting diode may be located on one side of the thin film transistor.

In one embodiment, each of the supporting portions may have one thin film transistor and one organic light emitting diode corresponding to one pixel, and in other embodiments, each of the supporting portions may have a plurality of thin film transistors and a plurality of organic light emitting diodes corresponding to a plurality of pixels.

And S104, stripping the substrate.

After the substrate is removed, a stretchable display panel is formed.

Display panel's preparation mode is simple easily to be realized, and the tensile display panel atress that forms is when being stretched, connecting portion deformation and elongated, and the deformation of bearing part is little, and tensile effect is good, and the device layer on the bearing part receives tensile influence little, does not influence display panel's display effect.

It should be understood that in the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

In embodiments of the present application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The above disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the application. In order to simplify the disclosure of the embodiments of the present application, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. Furthermore, embodiments of the present application may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, embodiments of the present application provide examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

The stretchable display panel is characterized by comprising a substrate layer and a device layer, wherein the substrate layer comprises a plurality of bearing parts arranged at intervals and a connecting part connected between the adjacent bearing parts, the device layer is arranged on the bearing parts, the thickness of the bearing parts is larger than that of the connecting part, and when the stretchable display panel is stretched, the connecting part deforms.
The stretchable display panel of claim 1, wherein a plurality of the carriers are arranged in an array.
The stretchable display panel according to claim 2, wherein the device layer comprises a thin film transistor, the thin film transistor comprises a gate electrode, a first end, and a second end, the stretchable display panel further comprises a scan line and a data line, the scan line is electrically connected to the gate electrode of the thin film transistor, the data line is electrically connected to the first end of the thin film transistor, and the orthographic projection portions of the scan line and the data line on the substrate layer are both located on the bearing portion.
The stretchable display panel according to claim 3, further comprising a buffer layer between the carrier and the thin film transistor to isolate the carrier from the thin film transistor.
The stretchable display panel according to claim 3, wherein the carrier comprises a first end surface and a second end surface which are opposite to each other, the device layer is located on one side of the second end surface, and an orthographic projection of the second end surface on a plane where the first end surface is located within a range of the first end surface.
The stretchable display panel of claim 5, wherein the second end surface is recessed inwardly to form a receiving groove, and the device layer is at least partially located in the receiving groove.
A stretchable display panel according to claim 5, wherein the connection portion comprises third and fourth oppositely disposed end faces, the third end face faces away from the device layer, and the scan line and the data line portion are located on the fourth end face.
The stretchable display panel according to claim 7, wherein the fourth end surface is provided with a dome, and the scan lines and the data lines are partially positioned on the dome to have a stretchable margin.
A stretchable display panel according to claim 7, wherein the third end surface is flush with the first end surface, and the perpendicular distance between the fourth end surface and the third end surface is smaller than the perpendicular distance between the second end surface and the first end surface.
The stretchable display panel according to claim 7, wherein the fourth end surface is flush with the second end surface, and the stretchable display panel further comprises a spacer bar positioned at one side of the connection part to support the connection part.
The stretchable display panel according to any one of claims 1 to 10, wherein the thickness of the connection part is uniformly reduced from a direction close to the carrying part to a direction far away from the carrying part.
The stretchable display panel according to any one of claims 1 to 10, wherein the connecting portion comprises a first connecting section extending along a first direction, and a second connecting section extending along a second direction, and a hollow hole is formed at a junction of the first connecting section and the second connecting section.
A stretchable display panel according to any one of claims 1 to 10, wherein the connecting portion is provided with a plurality of through holes penetrating through the connecting portion, the through holes dividing the connecting portion into a plurality of connecting sections arranged at intervals.
A stretchable display panel according to any of claims 1 to 13, wherein the substrate layer is made of an elastic material.
A display device, comprising a stretchable display panel according to any one of claims 1 to 14 and a driving device, wherein the driving device is electrically connected to the stretchable display panel to drive the stretchable display panel to display.
A method for manufacturing a display panel is characterized by comprising the following steps:

coating an elastic material on a substrate;

patterning the elastic material to form a substrate layer, wherein the substrate layer comprises a plurality of bearing parts arranged at intervals and connecting parts connected between the adjacent bearing parts, and the thickness of each bearing part is larger than that of each connecting part;

manufacturing the device layer on the bearing part;

and stripping the substrate.
The method for manufacturing a display panel according to claim 16, wherein before the step of manufacturing the device layer on the carrier, the method further comprises manufacturing a buffer layer on the carrier.
The method as claimed in claim 17, wherein the patterning the elastic material to form a base layer comprises dry etching the elastic material to form a channel, and the base layer forms the connection portion corresponding to the channel.
The method as claimed in claim 17, wherein before the step of applying the elastic material on the substrate, the method comprises forming spacer strips on the substrate at intervals, and the elastic material is partially applied on the spacer strips.