WO2020186500A1

WO2020186500A1 - Stretchable display panel, display device and manufacture method for display panel

Info

Publication number: WO2020186500A1
Application number: PCT/CN2019/078982
Authority: WO
Inventors: 周啟华; 林俊仪
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2019-03-21
Filing date: 2019-03-21
Publication date: 2020-09-24
Also published as: CN113261040A

Abstract

Disclosed is a stretchable display panel (100), comprising a base layer (10) and a component layer (20). The base layer (10) comprises a plurality of bearing parts (12) arranged at intervals and a connection portion (14) connected between adjacent bearing parts (12). The component layer (20) is disposed on the bearing part (12), and the thickness of the bearing part (12) is greater than that of the connection portion (14). When the stretchable display panel (100) is stretched, the connection portion (14) deforms. Further provided are a display device and a manufacture method for the stretchable display panel (100). When the stretchable display panel (100) is stretched under force, the connection portion (14) deforms to be lengthened. The bearing part (12) has small deformation and good stretching effect. The component layer (20) on the bearing part (12) is less affected by stretching, not influencing the display effect of the stretchable display panel (100).

Description

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

Technical field

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

Background technique

Display devices such as mobile phones are common electronic devices in life, and people's lives are increasingly inseparable from display devices. With the advancement of technology, flexible display devices have become more and more widely used, and flexible display devices have the feature of being foldable, so they are easy to carry and have a wide range of applications. In the prior art, the stretchable flexible display device will affect the devices on the display panel after being stretched, thereby affecting the display effect, and may even damage the device display panel.

Summary of the invention

The technical problem to be solved by this 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 of poor stretching effect of the flexible display device in the prior art.

In order to solve the above technical problems, on the one hand, the present application provides a stretchable display panel, the stretchable display panel includes a base layer and a device layer, the base layer includes a plurality of spaced bearing parts, and connected to The connecting portion between the adjacent bearing portions, the device layer is disposed on the bearing portion, the thickness of the bearing portion is greater than the thickness of the connecting portion, when the stretchable display panel is stretched , The connecting portion is deformed.

On the other hand, a display device is also provided, including a driving device and a stretchable display panel, the driving device is electrically connected to the stretchable display panel to drive the stretchable display panel to display.

On the other hand, a manufacturing method of a display panel is also provided, including:

Coating elastic material on the substrate;

The elastic material is patterned to form a base layer, the base layer includes a plurality of bearing portions arranged at intervals, and a connecting portion connected between adjacent bearing portions, the thickness of the bearing portion is greater than the connecting portion thickness of;

The device layer is fabricated on the carrying part.

The beneficial effects of the above technical solutions are as follows: when the stretchable display panel is stretched under force, the connecting part is deformed and elongated, the deformation of the carrying part is small, the stretching effect is good, and the device layer on the carrying part is stretched The impact is small and does not affect the display effect of the display panel.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings.

FIG. 1 is a top view of a stretchable display panel provided by Embodiment 1 of the application.

FIG. 2 is a cross-sectional view of a stretchable display panel provided by Embodiment 1 of the application.

FIG. 3 is a schematic diagram of the deformation of the stretchable display panel when the stretchable display panel is stretched from both sides.

FIG. 4 is a cross-sectional view of an 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 the stretchable display panel provided in the second embodiment of the application.

FIG. 11 is a flowchart of a manufacturing method of a display panel provided by an embodiment of the application.

detailed description

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The embodiments of the present application provide a stretchable display panel. Specifically, the stretchable display panel includes, but is not limited to, an Organic Light-Emitting Diode (OLED) display panel, such as a passively driven organic light-emitting diode display panel ( PMOLED) or Actively Driven Organic Light-Emitting Diode Display Panel (AMOLED). Further, the stretchable display panel can deform after being subjected to an external force to make the dimension perpendicular to the thickness direction larger. In one embodiment, After external force, the stretchable display panel can be restored to the size before stretching. In fact, depending on the direction of the external force applied to the stretchable display panel, the stretchable display panel can be stretched to be in different usage states, such as a flattened state with an enlarged display surface, or a stretchable display panel that is bent at a certain angle. Bending or folding state, continuous bending state, etc.

Please refer to FIG. 1 and FIG. 2 together. FIG. 1 is a top view of the stretchable display panel provided in the first embodiment of the application, and FIG. 2 is a cross-sectional view of the stretchable display panel provided in the first embodiment of the application. In this embodiment, the stretchable display panel 100 includes a base layer 10 and a device layer 20. The base layer 10 includes a plurality of bearing portions 12 arranged at intervals, and connecting portions 14 connected between adjacent bearing portions 12. The layer 20 is disposed on the bearing portion 12, and the thickness of the bearing portion 12 is greater than the thickness of the connecting portion 14. When the stretchable display panel 100 is stretched, the connecting portion 14 is deformed. In this embodiment, the base layer 10 is a film layer formed of a stretchable material, and the stretchable material is patterned to form the carrying portion 12 and the connecting portion 14. Specifically, the base layer 10 is a film layer formed on a substrate. In one embodiment, the stretchable material is polydimethylsiloxane (PDMS). In the process of forming the base layer 10, on the substrate The PDMS is coated, and then after a dry etching (photoresist coating, exposure, development, and photoresist removal) process, a patterned base layer 10, that is, the carrying portion 12 and the connecting portion 14 are formed. In this embodiment, the connecting portion 14 is connected to the bottom end of the supporting portion 12, so that the adjacent supporting portions 12 are connected to each other, and the thickness direction of the stretchable display panel 100 is perpendicular to the display surface of the stretchable display panel 100. Direction, the device layer 20 is stacked on the supporting portion 12 in the thickness direction. Further, the device layer 20 is a layer structure on the stretchable display panel 100 for realizing display function or touch function, and the device layer 20 may include a film Transistor (Thin Film Transistor, TFT), organic light emitting diode, etc. In this embodiment, the device layer 20 is a multilayer film layer formed on the carrying portion 12 after being stacked and patterned. The device layer 20 on each carrying portion 12 can work independently, for example, the thin film transistor of each device layer 20 22 can individually control the switch, so that each organic light emitting diode 24 can be individually controlled to emit light to display different images in combination.

Please refer to FIG. 3, which is a schematic diagram of the deformation of the stretchable display panel 100 when the stretchable display panel 100 is stretched from both 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 undergoes a relatively large deformation in the force direction, and the distance between adjacent bearing portions 12 increases, thereby making the display panel stretchable. The size of 100 is increased, specifically that the stretchable display panel 100 is expanded on the plane where the display surface is located, which can provide a larger display area and meet different usage requirements. Further, when the stretchable display panel is stretched under force, the connecting portion 14 is deformed and elongated, the deformation of the bearing portion 12 is small, and the stretching effect is good. The device layer 20 on the bearing portion 12 is stretched. The impact is small and does not affect the display effect of the display panel.

Please continue to refer to FIGS. 1 and 2. In one embodiment, a plurality of carrying parts 12 are arranged on the substrate in an array. Specifically, the cross section of the carrying part 12 is rectangular or square, and the carrying part 12 is in the first direction X Arranged at equal intervals in the second direction Y, the first direction X and the second direction Y are perpendicular, the connecting portion 14 includes a first connecting section 142 and a second connecting section 144, the first connecting section 142 extends along the first direction X, The second connecting section 144 extends in the second direction Y. The device layers 20 on the carrying portion 12 arranged in an array are also arranged in an array, so that the stretchable display panel 100 emits uniform light and displays a good image effect. Further, the array-distributed carrying parts 12 make the stretchable display panel 100 uniformly receive the force when deformed by force, and the deformation effect is good. In other embodiments, through different patterning operations, the arrangement of the carrying portion 12 formed may also be other arrangements. For example, the spacing of the carrying portion 12 varies according to the position of the carrying portion 12 from the driving chip, or the carrying portion The cross section of 12 is triangular, and the adjacent bearing parts 12 are distributed axisymmetrically.

Please continue to refer to FIGS. 1 and 2. In this embodiment, the device layer 20 includes a thin film transistor 22. The stretchable display panel 100 also includes a scan line 42 and a data line 44. The thin film transistor includes a gate 22c and a first terminal 22a. And the second end 22b, wherein the first end 22a is the source and the second end 22b is the drain; or the first end 22a is the drain and the second end 22b is the 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 scan line 42 is located on the carrier 12 in the orthographic projection portion of the base layer 10, and the data line 44 is on the base layer The orthographic projection part of 10 is located on the carrying portion 12. Specifically, the thin film transistor 22 includes an active layer, a gate insulating layer, and a gate 22c stacked in sequence, and a source electrode and a drain electrode electrically connected to both ends of the active layer. The scan line 42 is connected to the gate 22c to provide a scan signal to the gate 22c, and the data line 44 is connected to the source or drain to provide a data signal to the source or drain. In this embodiment, the number of scan lines 42 is multiple. The scan lines 42 extend in the first direction X or the second direction Y. The scan lines 42 are partially located on the carrying portion 12 and partially located on the connecting portion 14, so that when stretched When the display panel 100 can be stretched, since the supporting portion 12 is not deformed, the portion of the scan line 42 on the supporting portion 12 is not stretched, which prevents the scan line 42 from being excessively stretched and broken. Further, there are multiple data lines 44, the data lines 44 extend in 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, and the data lines 44 are partially located on the carrying portion 12 and partially It is located on the connecting portion 14, so that when the stretchable display panel 100 is stretched, since the bearing portion 12 is not deformed, the portion of the data line 44 on the bearing portion 12 is not stretched, which prevents the data line 44 from being overstretched And the break occurs.

Please refer to FIG. 2. In this embodiment, the stretchable display panel 100 further includes a buffer layer 50, and the buffer layer 50 is located between the carrying portion 12 and the thin film transistor 22 to isolate the carrying portion 12 and the thin film transistor 22. Specifically, the buffer layer 50 is an insulating material to prevent devices such as thin film transistors 22 of the device layer 20 from contacting the outside. In fact, the buffer layer 50 is also used to isolate external moisture and the like to prevent the external environment from affecting the device layer 20.

Please continue to refer to FIG. 2. In this 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 terminal 22b of the thin film transistor 22. The thin film transistor 22 controls the organic light emitting diode. 24 shines. Specifically, the organic light-emitting diode 24 includes an anode, a light-emitting layer, a cathode and other structures stacked in sequence, and the anode is connected to the source or drain of the thin film transistor 22 to receive a signal from the data line 44. In one embodiment, the organic light emitting diode 24 may be laminated on the thin film transistor 22, so that the orthographic projection of the device layer 20 on the carrying portion 12 has a smaller size, and the stretchable display panel 100 can be designed with a smaller carrying portion 12 The stretchable display panel 100 of the same size can be provided with a larger number of carrying parts 12 and organic light emitting diodes 24, and the stretchable display panel 100 has a good display effect. In other embodiments, the organic light emitting diode 24 may also be located on one side of the thin film transistor 22.

In one embodiment, each carrying portion 12 may be provided with a thin film transistor 22 and an organic light-emitting diode 24, so as to correspond to one pixel. In other embodiments, each carrying portion 12 may also be provided with multiple thin film transistors. 22. Multiple organic light emitting diodes 24, corresponding to multiple pixels.

Referring to FIG. 2, in this embodiment, the carrying portion 12 includes a first end surface 12a and a second end surface 12b disposed oppositely, the device layer 20 is located on the side of the second end surface 12b, and the second end surface 12b is on the plane of the first end surface 12a. The orthographic projection is located within the range of the first end surface 12a. Specifically, the first end surface 12a is the bottom surface of the bearing portion 12, and the second end surface 12b is the top surface of the bearing portion 12. The size of the top surface is smaller than the size of the bottom surface. On the one hand, the structure of the bearing portion 12 is more stable, which is convenient for bearing the device layer 20. On the other hand, since the connecting portion 14 is connected to the bottom position of the supporting portion 12, when the stretchable display panel 100 is stretched, the connecting portion 14 pulls the bottom position, and the bottom position is larger in size and affected by the stretching of the connecting portion 14. If it is smaller, the deformation of the carrying portion 12 is smaller, and the device layer 20 is less affected. In one embodiment, the longitudinal cross-sectional shape of the bearing portion 12 is trapezoidal. Further, the longitudinal cross-sectional shape of the bearing 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 to form a single bearing For example, when the connecting portions 14 on both sides of the bearing portion 12 exert a tensile force on the bearing portion 12 from the bottom position of the bearing portion 12, the bottom of the bearing portion 12 undergoes minor deformation and moves along the first end surface 12a to the first end surface 12a. In the direction of the two end faces 12b, the deformation of the carrying portion 12 gradually decreases, and the position of the second end face 12b is not deformed, so that the device layer 20 on the second end face 12b is not affected by the stretching of the stretchable display panel 100. The device layer 20 can work normally without being damaged.

1 and FIG. 4, in one embodiment, the top surface of the connecting portion 14 is provided with an arch 62 on the inclined surface 12c, the scan line 42 or the data line 44 is partially located on the inclined surface 12c, and the scan line 42 or data The portion of the line 44 is located on the arch 62, and the portion of the scan line 42 or the data line 44 located on the arch 62 has a curved shape. When the stretchable display panel 100 is stretched, the scan line 42 or the data line 44 The part located on the arch 62 is straightened to a certain extent to prevent the scan line 42 or the data line 44 from being pulled off. In other words, the part of the scan line 42 or the data line 44 on the arch 62 provides a certain degree of tension. Stretch margin.

Referring to FIG. 5, in an embodiment, the second end surface 12 b 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 receiving groove 70 is formed by patterning when the base layer 10 is formed, and the device layer 20 is arranged in the groove, which can reduce the overall thickness of the stretchable display panel 100, which is conducive to the lightweight and thin design of the stretchable display panel 100 .

1 and FIG. 6, in an embodiment, the connecting portion 14 includes a third end surface 14a and a fourth end surface 14b disposed oppositely, and the scan line 42 and the data line 44 are partially located on the fourth end surface 14b. Specifically, the third end surface 14 a is the bottom surface of the connecting portion 14, and the fourth end surface 14 b is the top surface of the connecting portion 14. In this embodiment, the fourth end surface 14b is provided with an arch 64, and the scan line 42 and the data line 44 are partially located 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 has a curved shape. When the stretchable display panel 100 is stretched, the scan line 42 or the data line 44 is located on the arch 64. The part is straightened to a certain extent, preventing the scan line 42 or the data line 44 from being pulled off.

Referring to FIG. 2, in this embodiment, the third end surface 14a is flush with the first end surface 12a, and the vertical distance between the fourth end surface 14b and the third end surface 14a is smaller than the vertical distance between the second end surface 12b and the first end surface 12a. Specifically, after the stretchable material is coated on the substrate, in the process of patterning the stretchable material to form the base layer 10, a channel is formed in the base layer 10, and the base layer 10 forms a connection corresponding to the remaining part of the channel.部14. It can also be understood that the channel is formed by recessing the base layer 10 from the second end surface 12b, and the base layer 10 forms the connecting portion 14 corresponding to the channel position. The method of forming the connecting portion 14 and the carrying portion 12 is simple, the patterning process is simple and easy to implement, and the carrying portion 12 and the connecting portion 14 after formation are stable.

Please refer to FIG. 7, specifically in one embodiment, the thickness of the connecting portion 14 gradually decreases from the edge position to the middle position of the connecting portion 14. On the one hand, the overall thickness of the connecting portion 14 is reduced. When the stretchable display panel 100 is stretched, the connecting portion 14 is more likely to be deformed and elongated, thereby improving the effect of stretching. Correspondingly, the bearing portion is further reduced. The amount of deformation of 12, on the other hand, avoids that the thickness of the connecting portion 14 is too low to cause the connecting portion 14 to break after being stretched.

Referring to FIG. 8, in an embodiment, the connecting portion 14 includes a first connecting section 142 extending in a first direction X, and a second connecting section 144 extending in a second direction Y. The first connecting section 142 and the second connecting section 142 A hollow hole 82 is provided at the junction of the connecting section 144. Specifically, the first connecting section 142 and the second connecting section 144 are perpendicular to each other. Taking four adjacent bearing portions 12 as an example, the connecting portion 14 connected to the upper and lower bearing portions 12 is the first connecting section 142. When the stretchable display panel 100 is stretched, the first connecting section 142 is stretched in the second direction Y, and the connecting portion 14 connected to the left and right bearing portions 12 is the second connecting section 144. When the panel 100 is used, the second connecting section 144 is elongated in the first direction X, so that at the junction of the first connecting section 142 and the second connecting section 144, the connecting portion 14 is simultaneously subjected to the first direction X and the second direction Y. The hollow hole 82 is provided at the junction of the first connecting section 142 and the second connecting section 144, which can prevent the position from being pulled in multiple directions and cause greater deformation, thereby helping to improve the stretchable display panel 100 overall stretching effect.

Please refer to FIG. 9, in one embodiment, the connecting portion 14 is provided with a plurality of through holes 84 penetrating 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 material volume of the connecting portion 14, and the connecting portion 14 is more easily stretched and deformed, thereby improving the effect of stretching. Correspondingly, the amount of deformation of the carrying portion 12 is further reduced. At the same time, the design of the through hole 84 has a small influence on the strength of the connecting portion 14 to prevent the connecting portion 14 from being broken after being stretched.

In one embodiment, the base layer 10 is made of an elastic material. After removing the force on the stretchable display panel 100, the stretchable display panel 100 can be restored to its original state and size, so that the display panel can be stretched. 100 can have a variety of working conditions, and can be repeatedly stretched without being easily damaged.

When the stretchable display panel is stretched under force, the connecting portion 14 is deformed and elongated, the deformation of the bearing portion 12 is small, the stretching effect is good, and the device layer 20 on the bearing portion 12 is less affected by the stretching. Does not affect the display effect of the display panel.

Please refer to FIG. 10, the 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 also includes a spacer The cushion strip 90 and the spacer strip 90 are located at one side of the connecting portion 14 to support the connecting 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 and the top surface of the carrying portion 12 are coplanar, and the scan line 42 and the data line 44 are located on a flat surface. It is beneficial to the production of the scan line 42 and the data line 44 and the signal transmission effect. Further, the spacer strip 90 is made of insulating material. The spacer strip 90 is used to support the connecting portion 14 and facilitate the production of the connecting portion 14. When the stretchable display panel 100 is stretched, the connecting portion 14 is elongated, and the spacer strip 90 is not deformed by force, and the spacer strip 90 is only used to support the connecting portion 14.

In one embodiment, the fourth end surface 14b is provided with an arch, and the scan line 42 and the data line 44 are partially located on the arch, 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 is curved. When the stretchable display panel 100 is stretched, the portion of the scan line 42 or the data line 44 located on the arch is A certain degree of straightening prevents the scan line 42 or the data line 44 from being pulled off.

In an embodiment, the thickness of the connecting portion 14 is uniformly reduced from a direction close to the bearing portion 12 to a direction away from the bearing portion 12. Specifically, from the edge position of the connecting portion 14 to the middle position, the thickness of the connecting portion 14 gradually decreases. On the one hand, the overall thickness of the connecting portion 14 is reduced. When the stretchable display panel 100 is stretched, the connecting portion 14 is more likely to be deformed and elongated, thereby improving the effect of stretching. Correspondingly, the bearing portion is further reduced. The amount of deformation of 12, on the other hand, avoids that the thickness of the connecting portion 14 is too low to cause the connecting portion 14 to break after being stretched.

The embodiment of the present application also 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. 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 stretchable display panel 100 can be stretched, and the display device can be in a different state of use, such as a flattened state with an enlarged display surface, and a certain bending state. Angle bending or folding state, continuous bending state, etc.

Referring to FIG. 11, an embodiment of the present application also provides a manufacturing method of a display panel for manufacturing the stretchable display panel provided by the embodiment of the present application. Specifically, the manufacturing steps of the display panel include the following:

S101, coating an elastic material on a substrate.

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

S102. The patterned elastic material forms a base layer. The base layer includes a plurality of bearing portions arranged at intervals and connecting portions connected between adjacent bearing portions. The thickness of the bearing portion is greater than the thickness of the connecting portion.

In this embodiment, after a dry etching (photoresist coating, exposure, development, and photoresist removal) process, a patterned base layer, namely, the carrying portion and the connecting portion are formed. In this embodiment, the connecting portion is connected to the bottom end of the supporting portion, so that adjacent supporting portions are connected to each other, the thickness direction of the stretchable display panel is perpendicular to the display surface of the stretchable display panel, and the device layer is The thickness direction is laminated and arranged on the supporting part. Further, the device layer is a layer structure used to realize a display function or a touch function on a stretchable display panel, and the device layer may include thin film transistors, organic light emitting diodes, and the like.

In one embodiment, the elastic material is dry-etched to form a channel, and the connecting portion is formed at the base layer corresponding to the channel. Specifically, the etching depth may be 10 um, so as to form a connecting portion with a thickness of 10 um and a bearing portion with a thickness of 20 um. On the one hand, it is advantageous for the connecting portion to be stretched under force, and on the other hand, it does not cause deformation of the bearing portion.

A plurality of carrying parts are arrayed on the substrate. Specifically, the orthographic projection of the carrying parts on the substrate is rectangular or square, and the carrying parts are arranged at equal intervals in the first direction and the second direction. Vertically, the connecting portion includes a first connecting section and a second connecting section, the first connecting section extends in a first direction, and the second connecting section extends in a second direction. The device layers on the array-distributed load-bearing part are also distributed in an array, so that the stretchable display panel emits light uniformly, and the displayed image effect is good. Furthermore, the array-distributed load-bearing parts enable the stretchable display panel to receive uniform force when deformed by force, and the deformation effect is good. In other embodiments, through different patterning operations, the arrangement of the carrying parts formed can also be other arrangements, for example, the spacing of the carrying parts varies according to the position of the carrying part from the driving chip, or the carrying part is on the substrate The orthographic projection of is a triangle, and the adjacent bearing parts are distributed axisymmetrically. In this embodiment, the third end surface is flush with the first end surface, and the vertical distance between the fourth end surface and the third end surface is smaller than the 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, a channel is formed in the base layer, and the base layer forms a connecting portion corresponding to the remaining part of the channel. It can also be understood that the channel is formed by recessing the base layer from the second end surface, and the base layer forms a connecting portion corresponding to the position of the channel. The method of forming the connecting portion and the bearing portion is simple, the patterning process is simple and easy to implement, and the formed bearing portion and the connecting portion are stable. In this embodiment, the carrying portion includes a first end surface and a second end surface that are opposed to each other. The first end surface faces the substrate, the device layer is located on the side of the second end surface, and the orthographic projection of the second end surface on the substrate is located on the front of the first end surface. Within the projection range. Specifically, the first end surface is the bottom surface of the bearing portion, and the second end surface is the top surface of the bearing portion. The size of the top surface is smaller than the size of the bottom surface. On the one hand, the structure of the bearing portion is more stable, which is convenient for supporting the device layer. The connecting part is connected to the bottom position of the carrying part. When the stretchable display panel is stretched, the connecting part pulls the bottom position. The bottom position is larger and less affected by the stretching of the connecting part, so that the deformation of the carrying part is smaller. The device layer is less affected. In one embodiment, the longitudinal cross-sectional shape of the carrying part is trapezoid. Further, the longitudinal cross-sectional shape of the carrying part is an isosceles trapezoid, and the top surface and the second end surface of the connecting part are connected by an inclined plane. Taking one carrying part as an example, when When the connecting parts on both sides of the carrying part exert a tensile force on the carrying part from the bottom position of the carrying part, the bottom of the carrying part undergoes minor deformation, and along the direction from the first end surface to the second end surface, the deformation of the carrying part gradually decreases , The position of the second end surface does not deform, 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 work normally without being damaged.

In another embodiment, before the "coating an elastic material on the substrate", the manufacturing method includes making spacer strips arranged at intervals on the substrate, and the elastic material is partially coated on the spacer. On the mat. In this embodiment, the fourth end surface is flush with the second end surface, and the stretchable display panel further includes spacer strips. The spacer strips are 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 carrying portion, and the scan lines and data lines are located on a flat surface, which is beneficial to scan lines and data. Line production and signal transmission effect. Further, the spacer strip is made of insulating material, the spacer strip is fixed on the substrate, and the spacer strip has no fixed relationship with the connecting part. The spacer strip is used to support the connecting part and facilitate the production of the connecting part. When the stretchable display panel is stretched, the connecting part is elongated, and the spacer strip is not deformed by force, and the spacer strip is only used to support the connecting part.

S103, fabricating a device layer on the carrying part.

In one embodiment, before the "fabricating the device layer on the carrying portion", the manufacturing method further includes fabricating a buffer layer on the carrying portion. Specifically, the buffer layer is an insulating material to prevent devices such as thin film transistors in the device layer from contacting the outside. In fact, the buffer layer is also used to isolate external moisture and the like to prevent the external environment from affecting the device layer.

In this embodiment, the device layer includes thin film transistors, and the stretchable display panel also includes scan lines and data lines. The scan lines are electrically connected to the gate of the thin film transistor, and the data lines are electrically connected to the source or drain of the thin film transistor. The orthographic projection part of the base layer is located on the bearing portion, and the orthographic projection portion of the data line on the base layer is located on the bearing portion. Specifically, the thin film transistor includes an active layer, a gate insulating layer, and a gate sequentially stacked on a substrate, and a source electrode and a drain electrode respectively electrically connected to both ends of the active layer. The scan line is connected to the gate to provide scan signals to the gate, and the data line is connected to the source or the drain to provide data signals to the source or the drain. In this embodiment, the number of scan lines is multiple, the scan lines extend in the first direction or the second direction, and the scan lines are partially located on the carrying portion and partially located on the connecting portion, so that when the stretchable display panel is stretched, Since the bearing portion is not deformed, the portion of the scan line on the bearing portion is not stretched, which prevents the scan line from being excessively stretched and broken. Further, the number of data lines is multiple, the data lines extend in the first direction or the second direction, the non-extending direction of the data lines is perpendicular to the scan lines, and the data lines are partly located on the carrying part and partly on the connecting part, so that when pulled When the display panel is stretched and stretched, since the bearing part is not deformed, the part of the data line on the bearing part is not stretched, which prevents the data line from being overstretched and broken.

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 other structures stacked in sequence. The anode is connected to the source or drain of the thin film transistor to receive a signal from the data line, and the light-emitting layer is made according to the potential difference between the anode and the cathode. Self-luminous. In one embodiment, the organic light emitting diode can be laminated on the thin film transistor, so that the size of the orthographic projection of the device layer on the carrying part is small, and the stretchable display panel can be designed with a smaller carrying part, and the same size can be stretched. The stretched display panel can be provided with more carrying parts and organic light emitting diodes, and the stretchable display panel has a good display effect. In other embodiments, the organic light emitting diode may also be located on one side of the thin film transistor.

In one embodiment, one thin film transistor and one organic light-emitting diode may be provided on each bearing portion, so as to correspond to one pixel. In other embodiments, each bearing portion may also be provided with multiple thin film transistors and multiple organic light emitting diodes. Light-emitting diodes, which correspond to multiple pixels.

S104, peel off the substrate.

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

The manufacturing method of the display panel is simple and easy to realize. When the formed stretchable display panel is stretched under force, the connecting part is deformed and elongated, the deformation of the carrying part is small, the stretching effect is good, and the device layer on the carrying part is affected The stretching effect is small and does not affect the display effect of the display panel.

It should be understood that in the description of the embodiments of the present application, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front" ", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and other indications The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the implementation of the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation and Therefore, it cannot be understood as a limitation to the implementation of this application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, "plurality" means two or more, unless otherwise clearly defined.

In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it may be a fixed connection or It is a detachable connection or an integral connection; it can be a mechanical connection, or it can be an electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two components or two components The interaction relationship. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the embodiments of the present application can be understood according to specific circumstances.

In the implementation of the present application, unless otherwise clearly defined and defined, the "on" or "under" of the first feature of the second feature may include direct contact between the first and second features, or include the first and The second feature is not in direct contact but through another feature between them. Moreover, "above", "above" and "above" the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or it simply means that the level of the first feature is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly above and obliquely above the second feature, or it simply means that the first feature has a lower level than the second feature.

The above disclosure provides many different embodiments or examples to realize the different structures of the embodiments of the present application. In order to simplify the disclosure of the embodiments of the present application, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the application. In addition, the embodiments of the present application may repeat reference numbers and/or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and/or settings discussed. . In addition, the embodiments of the present application provide examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and/or the use of other materials.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" etc. means to combine the described implementations The specific features, structures, materials, or characteristics described in the manners or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above-mentioned terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials, or characteristics can be combined in any one or more embodiments or examples in an appropriate manner.

The above are only specific implementations of this application, but the scope of protection of this application is not limited to this. Any person skilled in the art can easily think of various equivalents within the technical scope disclosed in this application. Modifications or replacements, these modifications or replacements shall be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

A stretchable display panel, characterized in that the stretchable display panel comprises a base layer and a device layer, the base layer comprises a plurality of bearing parts arranged at intervals, and a connection between the adjacent bearing parts. The device layer is disposed on the bearing portion, and the thickness of the bearing portion is greater than the thickness of the connecting portion. When the stretchable display panel is stretched, the connecting portion deforms.
The stretchable display panel of claim 1, wherein a plurality of the supporting parts 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, a first terminal, and a second terminal, and the stretchable display panel further It includes a scan line and a data line, the scan line is electrically connected to the gate of the thin film transistor, the data line is electrically connected to the first end of the thin film transistor, the scan line and the data line are in the base layer The orthographic projection parts are all located on the carrying part.
The stretchable display panel according to claim 3, wherein the stretchable display panel further comprises a buffer layer, and the buffer layer is located between the carrying portion and the thin film transistor to isolate the The carrying part and the thin film transistor.
The stretchable display panel according to claim 3, wherein the carrying portion comprises a first end surface and a second end surface that are oppositely disposed, the device layer is located on a side of the second end surface, and the second end surface The orthographic projection of the end surface on the plane where the first end surface is located is within the range of the first end surface.
The stretchable display panel of claim 5, wherein the second end surface is recessed inward to form a receiving groove, and the device layer is at least partially located in the receiving groove.
The stretchable display panel of claim 5, wherein the connecting portion comprises a third end surface and a fourth end surface disposed oppositely, the third end surface faces away from the device layer, and the scan line And the data line part is located on the fourth end surface.
The stretchable display panel according to claim 7, wherein the fourth end surface is provided with an arch, and the scan line and the data line are partially located on the arch, so that the scan line And the data line has a stretchable margin.
The stretchable display panel according to claim 7, wherein the third end surface is flush with the first end surface, and the vertical distance between the fourth end surface and the third end surface is smaller than that of the second end surface. The vertical distance between the 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 strip, and the spacer strip is located at One side of the connecting part supports the connecting part.
The stretchable display panel according to any one of claims 1 to 10, wherein the thickness of the connecting portion is uniformly reduced from a direction close to the supporting portion to a direction away from the supporting portion.
The stretchable display panel according to any one of claims 1 to 10, wherein the connecting portion comprises a first connecting section extending in a first direction, and a second connecting section extending in a second direction, Hollow holes are provided at the junction of the first connecting section and the second connecting section.
The 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 the connecting portion, and the through holes divide the connecting portion into Multiple connection segments set at intervals.
The stretchable display panel according to any one of claims 1 to 13, wherein the base layer is made of elastic material.
A display device, comprising a driving device and the stretchable display panel according to any one of claims 1 to 14, the driving device is electrically connected to the stretchable display panel to drive the stretchable display panel The display panel shows.
A manufacturing method of a display panel, characterized in that it comprises:

Coating elastic material on the substrate;

The elastic material is patterned to form a base layer, the base layer includes a plurality of bearing portions arranged at intervals, and a connecting portion connected between adjacent bearing portions, the thickness of the bearing portion is greater than the connecting portion thickness of;

Fabricating the device layer on the carrying portion;

Peel off the substrate.
The method of manufacturing a display panel according to claim 16, wherein before the "fabricating the device layer on the carrying portion", the manufacturing method further comprises: fabricating a buffer layer on the carrying portion .
The method for manufacturing a display panel according to 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 corresponds to the groove The connecting portion is formed at the road.
The manufacturing method of the display panel according to claim 17, wherein before the "coating an elastic material on the substrate", the manufacturing method comprises: manufacturing spacer strips arranged at intervals on the substrate, and The elastic material is partially coated on the spacer strip.