WO2019006826A1 - 一种柔性显示面板及其制备方法、柔性显示装置 - Google Patents
一种柔性显示面板及其制备方法、柔性显示装置 Download PDFInfo
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- WO2019006826A1 WO2019006826A1 PCT/CN2017/097752 CN2017097752W WO2019006826A1 WO 2019006826 A1 WO2019006826 A1 WO 2019006826A1 CN 2017097752 W CN2017097752 W CN 2017097752W WO 2019006826 A1 WO2019006826 A1 WO 2019006826A1
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- organic light
- bending
- light emitting
- metal layer
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- 238000002360 preparation method Methods 0.000 title abstract description 3
- 238000005452 bending Methods 0.000 claims abstract description 176
- 239000002184 metal Substances 0.000 claims abstract description 139
- 239000000758 substrate Substances 0.000 claims abstract description 41
- 239000010410 layer Substances 0.000 claims description 270
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 21
- 229920005591 polysilicon Polymers 0.000 claims description 21
- 239000002346 layers by function Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000003139 buffering effect Effects 0.000 claims 2
- 239000010409 thin film Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012044 organic layer Substances 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
- H10K77/10—Substrates, e.g. flexible substrates
- H10K77/111—Flexible substrates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to the field of display technologies, and in particular, to a flexible display panel, a method for fabricating the same, and a flexible display device.
- the flexible display consists of a flexible material layer and a variable, flexible display.
- the use of flexible display panels has many advantages, such as low power consumption, direct visibility, flexibility, and deformability.
- the flexible display panel is also limited in the bending function.
- the force received is tensile stress
- the force received is compressive stress.
- the tensile stress or compressive stress received by the flexible display during bending may damage the device or the driving circuit in the display panel, thereby damaging the display, and the service life of the display panel is affected.
- the bent portion of the flexible display panel is generally disposed as a non-display area, that is, the display pixel is not disposed in the bent portion of the flexible display panel, thereby reducing the metal walking provided in the bent portion of the flexible display panel. Therefore, when the flexible display panel is bent, the bending area of the flexible display panel can reduce the probability of the bent portion being damaged due to the absence of the metal trace, thereby improving the service life of the display panel. However, since the display portion is not provided in the bent portion, the number of pixels per unit area on the display panel is reduced, and the display effect of the display panel is affected.
- the present invention provides a flexible display panel, a method of fabricating the same, and a flexible display device capable of improving the service life of the display panel.
- one technical solution proposed by the present invention is to provide a flexible display device including a flexible display panel:
- the flexible display panel includes at least two non-bending regions and a bending region between two adjacent non-bending regions of the at least two non-bending regions, wherein the at least two non-bending regions are At least one of the bending display area and the display area of the flexible display panel are provided with a flexible substrate and a functional layer on the flexible substrate;
- the functional layer disposed in the display area includes an organic light emitting device layer and a driving layer disposed between the flexible substrate and the organic light emitting device layer; wherein a plurality of organic light emitting layers are formed in the organic light emitting device layer Displaying a pixel; at least one metal layer for providing a driving signal to the organic light emitting display pixel is disposed in the driving layer;
- a functional layer disposed in the bending region includes the organic light emitting device layer and a buffer layer disposed between the flexible substrate and the organic light emitting device layer;
- a density of the metal layer near the bending region is greater than a setting density of the metal layer away from the bending region;
- a width of the metal layer near the bend region is smaller than a width of the metal layer away from the bend region.
- Another technical solution provided by the present invention is to provide a flexible display panel comprising at least two non-bending regions and between two adjacent non-bending regions of the at least two non-bending regions a bending region, at least one of the at least two non-bending regions serving as a display region, the bending region and the display region of the flexible display panel being provided with a flexible substrate and a function on the flexible substrate Floor;
- the functional layer disposed in the display area includes an organic light emitting device layer and a driving layer disposed between the flexible substrate and the organic light emitting device layer; wherein a plurality of organic light emitting layers are formed in the organic light emitting device layer Displaying a pixel; at least one metal layer for providing a driving signal to the organic light emitting display pixel is disposed in the driving layer;
- the functional layer disposed in the bending region includes the organic light emitting device layer and a buffer layer disposed between the flexible substrate and the organic light emitting device layer.
- Another technical solution provided by the present invention provides a method for preparing a flexible display panel, the preparation method comprising:
- the flexible substrate includes at least two non-bending regions and a bending region between adjacent two non-bending regions of the at least two non-bending regions, the at least At least one of the two non-bending zones is used as a display area;
- an organic light emitting device layer on the driving layer and the buffer layer; wherein a plurality of organic light emitting display pixels are formed in the organic light emitting device layer, and a plurality of organic light emitting layers are formed in the driving layer
- the display pixel provides at least one metal layer of the drive signal.
- the flexible display panel of the embodiment of the present invention includes at least two non-bending regions and a bending region between at least two non-bending regions, at least two of the non-bending regions.
- a non-bending area and a bending area of the flexible display panel each include a flexible substrate and an organic light emitting device layer, wherein the display area is further provided with at least one metal layer for providing a driving signal to the organic light emitting device layer,
- the bend zone is also provided with a buffer layer.
- the driving portion for driving the organic light emitting device layer in the bending region is disposed in the non-bending region near the bending region while the organic device light emitting layer is disposed in the bending region of the flexible display panel. Satisfying the bending zone can also display the picture, and reduce the probability that the metal traces are damaged by the bending in the bending zone, thereby improving the service life of the display panel.
- FIG. 1 is a top plan view of an embodiment of a flexible display panel of the present invention.
- FIG. 2 is a schematic cross-sectional view of the flexible display panel of FIG. 1 in an application example
- FIG. 3 is a schematic cross-sectional view of the flexible display panel shown in FIG. 1 in another application example
- Figure 4 is a plan view showing another embodiment of the flexible display panel of the present invention.
- FIG. 5 is a schematic flow chart of an embodiment of a method for preparing a flexible display panel according to the present invention.
- FIG. 6 is a schematic structural view of an embodiment of a flexible display device of the present invention.
- FIG. 1 is a plan view of an embodiment of a flexible display panel of the present invention
- FIG. 2 is a schematic cross-sectional view of the flexible display panel of FIG.
- the flexible display panel 100 of the present embodiment includes two non-bending areas A, B and a bending area C located in two non-bending areas.
- two non-bending areas Each of the bending zones A, B serves as a display area, and the bending zone C and the display zones A, B of the flexible display panel are each provided with a flexible substrate 10 and a functional layer on the flexible substrate 10.
- the non-bending area in the flexible display panel 100 may be greater than two, the bending area is disposed between any adjacent two non-bending areas, and at least two non-bending areas may be displayed as a whole.
- the area may also be a partial non-bending area as a display area.
- the functional layer disposed in the display areas A, B of the flexible display panel 100 includes an organic light emitting device layer 30 and a driving layer disposed between the flexible substrate 10 and the organic light emitting device layer 30. 20.
- a plurality of organic light emitting display pixels 302, 303 are formed in the organic light emitting device layer 30. It is noted that the organic light emitting device layer 30 is disposed on the bending region C and the display regions A and B of the flexible display panel 100.
- An organic light emitting display pixel is disposed on the folding area C and the display area A, B, and the organic light emitting display pixel on the display area A, B is marked as the organic light emitting display pixel 302, and the organic light emitting display pixel on the bending area is marked as The organic light emitting display pixel 303.
- the driving layer 20 is provided with a metal layer 201 for supplying driving signals to the organic light emitting display pixels 302, 303.
- the metal layer 201 is disposed according to specific requirements. It can be understood that the metal layer 201 is at least one layer. As shown in FIG.
- the organic light-emitting display pixels 302 in the non-bending regions A, B are respectively driven by a metal layer 201 in the driving layer 20 below, which is connected to the anode 301 of the organic light-emitting display pixel 302.
- the anode 301 of the organic light emitting display pixel is a part of the organic light emitting device layer 30.
- the organic light emitting device layer 30 is further provided with a cathode 304 of the organic light emitting display pixel, and the organic light emitting display pixels 302, 303 are disposed at the anode 301. Between the cathode and the cathode 304, in the present embodiment, the cathode 304 of the organic light-emitting display pixels 302, 303 covers the entire surface of the organic light-emitting device layer 30.
- the functional layer disposed in the bending region C of the flexible display panel 100 includes the organic light emitting device layer 30 and a buffer layer disposed between the flexible substrate 10 and the organic light emitting device layer 30.
- the buffer layer includes a plurality of layers of organic buffer layers 401, 402 disposed in a stack.
- the organic light-emitting display pixels 303 in the bending region C are respectively driven by the metal layer 201 in the non-bending regions A, B on both sides of the bending region C.
- the anode 301 of the organic light-emitting display pixel 303 in the bending region C extends to the non-bending regions A and B near the bending region C, and is respectively connected to the corresponding metal layer 201, so that the metal layer 201 can be bent.
- the organic light emitting display pixels 303 in the area C provide driving signals.
- the driving portion for driving the organic light emitting device layer in the bending region is disposed in the non-bending region near the bending region while the organic device light emitting layer is disposed in the bending region of the flexible display panel.
- the screen can be displayed while satisfying the bending zone, and the probability that the metal traces are damaged by the bending of the bending zone is reduced, thereby improving the service life of the display panel.
- the metal layer 201 of the organic light-emitting display pixel 303 in the organic light-emitting device layer 30 for driving the bending region C is also disposed in the non-bending region A adjacent to the bending region C, In the drive layer 20 in B. Therefore, in the non-bending areas A, B adjacent to the bending zone C, the number of metal layers 201 disposed near the portion of the bending zone C may be opposite to the metal layer disposed away from the portion of the bending zone C. The number of 201 is large, resulting in the arrangement density of the metal layer 201 near the bending region C in the driving layer 20 of the non-bending regions A, B being greater than the setting density of the metal layer 201 away from the bending region C.
- the metal layer 201 in the driving layer 20 near the bending area C is appropriately reduced. Width, therefore, in the flexible display panel 100 of the present embodiment, in the non-bending areas A, B, the width of the metal layer 201 near the bending area C may be smaller than the width of the metal layer 201 away from the bending area C. width.
- the metal layer 201 in the driving layer 20 is for supplying a driving signal to the organic light emitting display pixels 302, 303 in the organic light emitting device layer 30.
- the metal layer 201 in the driving layer 20 includes a polysilicon layer 202 and a scanning metal layer (not shown) disposed on the polysilicon layer 202 and a first data metal layer, wherein the scanning metal layer and the first data are The metal layers are insulated; the first data metal layer includes a first metal portion 201 and a second metal portion (not shown) connected by a polysilicon layer 202, and the first metal portion 201 is coupled to the anode 301 of the organic light emitting display pixels 302, 303.
- the metal layer 201 depicted in Figures 2 and 3 is the first metal portion of the first data metal layer
- the second metal portion is used to provide data signals to the respective organic light-emitting display pixels 302, 303.
- the scan metal layer, the polysilicon layer 202 and the first data metal layer constitute the thin film transistor and the array line in the flexible display panel 100; wherein the scan metal layer forms the gate of the thin film transistor while forming the scan line
- the polysilicon layer 202 forms a channel portion of the thin film transistor, and the first metal portion and the second metal portion of the first data metal layer respectively form a source and a drain of the thin film transistor; wherein the organic light emitting display pixel 302 is connected,
- the first metal portion 201 of the anode 301 of 303 is the drain of the thin film transistor, and the second metal portion for supplying the data signal to the corresponding organic light-emitting display pixel is the source of the thin film transistor.
- an inorganic layer 202 is disposed between the metal layer 201 and the flexible substrate 10 in the driving layer 20.
- the scanning metal layer, the polysilicon layer 202 and the first data metal layer are disposed on the inorganic layer.
- Between 202. Between the metal layer 201 and the anode 301 of the organic light-emitting display pixel 302 is an organic layer 203, wherein the organic layer 203 and the buffer layer 401 may have the same organic structure.
- the organic light emitting display pixels 302, 303 in the organic light emitting device layer 30 are a plurality of pixel units distributed in an array, and the driving circuits of each pixel unit are also relatively independent, and each of the organic light emitting display pixels 302, 303 Corresponding to a set of drive circuits.
- the plurality of thin film transistors and array lines composed of the polysilicon layer 202, the scan metal layer, and the first data metal layer are in one-to-one correspondence with the organic light-emitting display pixels 302, 303 in the organic light-emitting device layer 30.
- the driving layer 20 is not disposed in the bending region C, the buffer layers 401, 402 between the organic light emitting device layer 30 and the flexible substrate 10 in the bending region C are replaced. Therefore, a driving circuit for driving the organic light-emitting display pixels 303 in the bending region C is provided in the non-bending regions A, B adjacent to the bending region C.
- the anode 301 of the organic light-emitting display pixel 303 in the bending zone C is extended to the adjacent non-bending area A or the non-bending area B, and corresponds to the first of the non-bending area A or the non-bending area B
- the metal portion 201 is connected, that is, the anode 301 of the organic light-emitting display pixel 303 in the bending region C extends to the adjacent non-bending region A and/or the non-bending region B, and the non-bending region A and/or the non-bending portion
- a capacitor metal layer (not shown) over the polysilicon layer of the driving layer 20 is further disposed in the metal layer of the driving layer 20 of the non-bending regions A and B.
- a second data metal layer 403 is disposed in the buffer layers 401, 402 of the bending region C, and the second data metal layer 403 is respectively connected to the two sides of the bending region C.
- the second metal portion 201 of the first data metal layer is connected to the source of the thin film transistor for driving the organic light emitting display pixel 303.
- the second data line metal layer 403 is disposed between the plurality of layers of the organic buffer layers 401, 402.
- the organic buffer layer 401, 402 can release the stress generated when the bending region C is bent, and the second data line metal layer 403 is disposed between the plurality of organic buffer layers 401, 402, and can further be used when the bending region C is bent.
- the second data line metal layer is protected, thereby improving the bending performance of the bending zone C, so that the bending zone is not easily damaged by the bending.
- the flexible display panel of the present embodiment further includes a flexible circuit board 50 disposed at an edge of the flexible substrate 10 and connected to the driving layer 20 for providing the driving layer 20. Drive signal.
- FIG. 5 is a schematic flowchart of a method for fabricating a flexible display panel according to an embodiment of the present invention. As shown in FIG. 5, the method for preparing a flexible display panel of the present embodiment may include the following steps:
- the flexible substrate 10 includes two non-bending areas A, B and a bending area C between the two non-bending areas A, B as shown in FIGS. 1 and 2, wherein Both non-bending areas A, B are used as display areas.
- the non-bending area of the flexible substrate may also be greater than two, and the bending area is between each of the plurality of non-bending areas; the plurality of non-bending areas may be used for display Area, only part of the non-bending area can be used as the display area.
- the driving layer is configured to form a driving circuit
- the buffer layer is disposed in the bending region of the flexible substrate, and is used for releasing the stress generated at the bending region when the bending region is deformed, thereby protecting the bending region and preventing the bending
- the fold zone is damaged by the presence of stress.
- An organic light emitting device layer is formed over the driving layer of the non-bending region and the buffer layer of the bending region.
- the organic light emitting device layer is provided with a plurality of organic light emitting display pixels. It can be understood that the organic light emitting display pixels formed in the organic light emitting device layer have a one-to-one correspondence with the driving circuit formed in the driving layer, that is, one organic light emitting display pixel corresponds to A drive circuit.
- the driving circuit includes a scanning metal layer, a polysilicon layer and a first data metal layer disposed in the driving layer of the non-bending region, wherein the first data metal layer comprises a first metal portion and a second metal portion, the first metal portion and The second metal portion is connected by a polysilicon layer, the first metal portion is also coupled to the anode of the organic light emitting display pixel, and the second metal portion is configured to provide a data signal to the corresponding organic light emitting display pixel. It can be seen from the structure of the scanning metal layer, the polysilicon layer and the first data metal layer that the scanning metal layer, the polysilicon layer and the first data metal layer constitute a thin film transistor of the organic light emitting display pixel.
- the metal layer in the driving layer of the non-bending region further includes a capacitor metal layer disposed over the polysilicon layer of the driving layer.
- the driving circuit of the organic light emitting display pixel in the bending region is also disposed in a portion of the non-bending region adjacent to the bending region near the bending region, the organic light emitting display pixel in the bending region
- the anode needs to extend to the adjacent non-bending region of the bending region, and is connected to the corresponding first metal portion, thereby being capable of providing the organic light emitting display pixel in the bending region through the driving circuit disposed in the non-bending region Drive signal.
- a second data metal layer is disposed in the buffer layer in the bending region, and the second data metal layer is used to connect the second metal portion of the corresponding first data metal layer on both sides of the bending region. It can be understood that the second metal portion to which the second data metal layer is connected is a second metal portion for providing a driving signal to the organic light emitting display pixels in the bending region.
- the present invention further provides an embodiment of a flexible display device.
- the flexible display device 400 includes the flexible display panel 100 as shown in FIGS. 1 to 4, and further includes a flexible display panel 100.
- the package structure 60 is used to package and protect the flexible display panel 100.
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Abstract
一种柔性显示面板（100）及其制备方法、柔性显示装置。该柔性显示面板包括至少两个非弯折区（A，B）和位于至少两个非弯折区之间的弯折区（C），至少两个非弯折区中至少一个用作显示区；柔性显示面板的非弯折区和弯折区均包括柔性基板（10）和有机发光器件层（30），其中，显示区还设置有用于向有机发光器件层提供驱动信号的至少一金属层（201），弯折区还设置有缓冲层。即在弯折区内设置有机发光器件层的同时，将用于驱动弯折区内的有机发光器件层的驱动部分设置在弯折区附近的非弯折区内，进而在满足弯折区也能够显示画面的同时，减少弯折区内有金属走线受到弯折影响而损害的概率，提高显示面板的使用寿命。
Description
【技术领域】
本发明涉及显示技术领域，具体而言涉及一种柔性显示面板及其制备方法、柔性显示装置。
【背景技术】
近年来，随着材料技术的发展，显示面板已经可以制作成可弯曲的形式。柔性显示器由柔软的材料质层，可变型可弯曲的显示装置。采用柔性显示面板具有很多的有点，例如低功耗、直接可视、可弯曲、可变形等等。
对于现有技术中的柔性显示面板而言，受到柔性材料、柔性机构等的局限性，柔性显示面板在弯折功能方面也受到一定的限制。当柔性显示面板朝显示屏相反方向弯折时，所受到的力为拉应力，朝显示屏内弯折时，收到的力为压应力。柔性显示屏在弯折时收到的拉应力或压应力会对显示面板内的器件或驱动线路造成损坏，进而损害显示屏，导致显示面板的使用寿命收到影响。
现有技术中，通常采用将柔性显示面板的弯折部分设置为非显示区，即在柔性显示面板的弯折部分不设置显示像素，进而可以减少在柔性显示面板的弯折部分设置的金属走线，如此，当柔性显示面板弯折时，其弯折区由于没有金属走线，则能够减小弯折部分被损坏的几率，进而提高显示面板的使用寿命。但由于弯折部分不设置显示像素，进而降低了显示面板上单位面积上的像素数量，导致显示面板的显示效果受到影响。
【发明内容】
有鉴于此，本发明提供一种柔性显示面板及其制备方法、柔性显示装置，该柔性显示面板能够提高显示面板的使用寿命。
为解决上述技术问题，本发明提出的一个技术方案是：提供一种柔性显示装置，该柔性显示装置包括一柔性显示面板：
所述柔性显示面板包括至少两个非弯折区和位于所述至少两个非弯折区中相邻两个非弯折区之间的弯折区，所述至少两个非弯折区中的至少一个用作显示区，所述柔性显示面板的弯折区和所述显示区均设置有柔性基板和所述柔性基板上的功能层；
设置于所述显示区中的功能层包括有机发光器件层和设置于所述柔性基板和所述有机发光器件层之间的驱动层；其中，所述有机发光器件层中形成有若干个有机发光显示像素；所述驱动层中设置有向所述有机发光显示像素提供驱动信号的至少一金属层；
设置于所述弯折区中的功能层包括所述有机发光器件层和设置于所述柔性基板和所述有机发光器件层之间的缓冲层；
在所述驱动层中，靠近所述弯折区处的所述金属层的设置密度大于远离所述弯折区处的所述金属层的设置密度；
在所述驱动层中，靠近所述弯折区处的所述金属层的宽度小于远离所述弯折区处的所述金属层的宽度。
本发明还提出的一个技术方案：提供一种柔性显示面板，该柔性显示面板包括至少两个非弯折区和位于所述至少两个非弯折区中相邻两个非弯折区之间的弯折区，所述至少两个非弯折区中的至少一个用作显示区，所述柔性显示面板的弯折区和所述显示区均设置有柔性基板和所述柔性基板上的功能层；
设置于所述显示区中的功能层包括有机发光器件层和设置于所述柔性基板和所述有机发光器件层之间的驱动层；其中，所述有机发光器件层中形成有若干个有机发光显示像素；所述驱动层中设置有向所述有机发光显示像素提供驱动信号的至少一金属层；
设置于所述弯折区中的功能层包括所述有机发光器件层和设置于所述柔性基板和所述有机发光器件层之间的缓冲层。
本发明还提出的另一个技术方案，提供一种柔性显示面板的制备方法，该制备方法包括：
提供一柔性基板；其中，所述柔性基板包括至少两个非折弯区和位于在所述至少两个非折弯区中相邻两个非弯折区之间的弯折区，所述至少两个非折弯区中的至少一个用作为显示区；
在所述柔性基板的显示区中形成驱动层，并在所述柔性基板的弯折区中形成缓冲层；
在所述驱动层和所述缓存层上形成有机发光器件层；其中，所述有机发光器件层中形成有若干个有机发光显示像素，所述驱动层中形成有用于向所述若干个有机发光显示像素提供驱动信号的至少一金属层。
有益效果：区别于现有技术，本发明实施例的柔性显示面板包括至少两个非弯折区和位于至少两个非弯折区之间的弯折区，至少两个非弯折区中至少一个用作显示区；柔性显示面板的非弯折区和弯折区均包括柔性基板和有机发光器件层，其中，显示区还设置有用于向有机发光器件层提供驱动信号的至少一金属层，弯折区还设置有缓冲层。本发明通过在柔性显示面板的弯折区内设置有机器件发光层的同时，将用于驱动弯折区内的有机发光器件层的驱动部分设置在弯折区附近的非弯折区内，在满足弯折区也能够显示画面的同时，减少弯折区内有金属走线受到弯折影响而损害的概率，提高显示面板的使用寿命。
【附图说明】
图1是本发明柔性显示面板一实施例的俯视图；
图2是图1所示的柔性显示面板在一应用例中的截面示意图；
图3是图1所示的柔性显示面板在另一应用例中的截面示意图；
图4是本发明柔性显示面板另一实施例的俯视图；
图5是本发明柔性显示面板的制备方法一实施例的流程示意图；
图6是本发明柔性显示装置一实施例的结构示意图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，说明书及说明书附图中，相同结构采用相同标号，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
参阅图1和图2，图1是本发明柔性显示面板一实施例的俯视图，图2是图1所示的柔性显示面板的截面示意图。如图1和图2所示，本实施例的柔性显示面板100包括两个非弯折区A,B和位于两个非弯折区中的弯折区C，本实施例中，两个非弯折区A,B中的均用作显示区，柔性显示面板的弯折区C和显示区A,B均设置有柔性基板10和柔性基板10上的功能层。可以理解的是，柔性显示面板100中的非弯折区可以大于两个，弯折区设置在任意相邻的两个非弯折区之间，且至少两个非弯折区可以全作为显示区，也可以部分非弯折区作为显示区。
进一步，如图1和图2所示，设置于柔性显示面板100的显示区A,B中的功能层包括有机发光器件层30和设置于柔性基板10和有机发光器件层30之间的驱动层20。其中，有机发光器件层30中形成有若干个有机发光显示像素302,303，值得注意的是，柔性显示面板100的弯折区C和显示区A,B上均设置有有机发光器件层30，因此弯折区C和显示区A,B上均分布有有机发光显示像素，将显示区A,B上的有机发光显示像素标记为有机发光显示像素302，将弯折区上的有机发光显示像素标记为有机发光显示像素303。驱动层20中设置有向有机发光显示像素302，303提供驱动信号的金属层201，该金属层201根据具体需求进行设置，可以理解的是，金属层201至少为一层。如图2所示，非弯折区A，B内的有机发光显示像素302分别由其下方的驱动层20中的金属层201进行驱动，该金属层201连接有机发光显示像素302的阳极301。可以理解的是，有机发光显示像素的阳极301为有机发光器件层30中的一部分，有机发光器件层30中还设置有有机发光显示像素的阴极304，有机发光显示像素302，303设置在阳极301和阴极304之间，本实施例中，有机发光显示像素302，303的阴极304是整面覆盖有机发光器件层30的。
进一步，设置于柔性显示面板100的弯折区C中的功能层包括有机发光器件层30和设置于柔性基板10和有机发光器件层30之间的缓冲层。本实施例中，缓冲层包括为层叠设置的若干层有机缓冲层401,402。
如图2所示，弯折区C内的有机发光显示像素303分别由该弯折区C两侧的非弯折区A，B中的金属层201进行驱动。弯折区C内的有机发光显示像素303的阳极301延伸至该弯折区C附近的非弯折区A，B中，分别与相应的金属层201连接，进而使得金属层201能够为弯折区C内的有机发光显示像素303提供驱动信号。
本实施例中，通过在柔性显示面板的弯折区内设置有机器件发光层的同时，将用于驱动弯折区内的有机发光器件层的驱动部分设置在弯折区附近的非弯折区内，进而在满足弯折区也能够显示画面的同时，减少弯折区内有金属走线受到弯折影响而损害的概率，提高显示面板的使用寿命。
进一步，如图2所示，将用于驱动弯折区C的有机发光器件层30中的有机发光显示像素303的金属层201也是设置在与弯折区C相邻的非弯折区A，B中的驱动层20中。因此，在与弯折区C相邻的非弯折区A，B中，其靠近弯折区C的部分设置的金属层201的数量会相对于其远离弯折区C的部分设置的金属层201的数量多，导致在非弯折区A，B的驱动层20中，靠近弯折区C处的金属层201的设置密度会大于远离弯折区C处的金属层201的设置密度。
进一步，为了使非弯折区A，B的驱动层20中靠近弯折区C处能够设置足够数量的金属层201，适当减小驱动层20中，靠近弯折区C处的金属层201的宽度，因此，在本实施例的柔性显示面板100中，在非弯折区A，B中，靠近弯折区C处的金属层201的宽度会小于远离弯折区C处的金属层201的宽度。
进一步，驱动层20内的金属层201是用于向有机发光器件层30中的有机发光显示像素302，303提供驱动信号的。本实施例中，驱动层20中的金属层201包括多晶硅层202及设置于多晶硅层202之上的扫描金属层（未画出）和第一数据金属层，其中，扫描金属层和第一数据金属层之间绝缘；第一数据金属层包括通过多晶硅层202进行连接的第一金属部分201和第二金属部分（未画出），第一金属部分201连接于有机发光显示像素302,303的阳极301（可以理解的是，图2和图3中画出的金属层201即为第一数据金属层的第一金属部分），第二金属部分用于向相应的有机发光显示像素302,303提供数据信号。由上述结构可知，扫描金属层、多晶硅层202和第一数据金属层构成了柔性显示面板100中的薄膜晶体管和阵列线路；其中，扫描金属层在形成扫描线的同时，形成了薄膜晶体管的栅极，多晶硅层202形成了薄膜晶体管的沟道部分，第一数据金属层的第一金属部分和第二金属部分分别形成了薄膜晶体管的源极和漏极；其中，连接有机发光显示像素302，303的阳极301的第一金属部分201即为薄膜晶体管的漏极，用于向相应的有机发光显示像素提供数据信号的第二金属部分即为薄膜晶体管的源极。
如图2和图3所示，驱动层20内设置于金属层201与柔性基板10之间设置有无机层202，上述的扫描金属层、多晶硅层202和第一数据金属层均设置在无机层202之间。在金属层201与有机发光显示像素302的阳极301之间为有机层203，其中，有机层203与缓冲层401可以为同一层有机结构。
可以理解的是，有机发光器件层30中的有机发光显示像素302，303是若干个呈阵列分布的像素单元，每个像素单元的驱动电路也是相对独立的，每一个有机发光显示像素302，303对应一组驱动电路。换言之，由多晶硅层202、扫描金属层和第一数据金属层构成的若干个薄膜晶体管和阵列线路与有机发光器件层30中的有机发光显示像素302，303是一一对应的。
进一步的，由于弯折区C内未设置驱动层20，取而代之的是在弯折区C内的有机发光器件层30与柔性基板10之间的缓冲层401,402。因此，在弯折区C相邻的非弯折区A，B中设置用于驱动弯折区C内的有机发光显示像素303的驱动电路。令弯折区C中的有机发光显示像素303的阳极301延伸至相邻的非弯折区A或非弯折区B，并与非弯折区A或非弯折区B中对应的第一金属部分201连接，即弯折区C中的有机发光显示像素303的阳极301延伸至相邻的非弯折区A和/或非弯折区B，与非弯折区A和/或非弯折区B中用于驱动该有机发光显示像素303的薄膜晶体管的漏极连接。
进一步，非弯折区内A，B的驱动层20的金属层中还设置有在驱动层20的多晶硅层之上的电容金属层（未画出）。
进一步，由于弯折区C内未置驱动层20，为了使提供给弯折区C内的有机发光显示像素303的数据信号能够具有连贯性，而不至于中断，如图3所示，在图1所示的柔性显示面板的另一实施例中，在弯折区C的缓冲层401,402中设置有第二数据金属层403，第二数据金属层403分别连接于弯折区C两侧对应的第一数据金属层的第二金属部分201，即连接用于驱动该有机发光显示像素303的薄膜晶体管的源极。
本实施例中，第二数据线金属层403设置在若干层有机缓冲层401,402之间。有机缓冲层401,402能够对弯折区C发生弯曲时产生的应力进行释放，将第二数据线金属层403设置在若干层有机缓冲层401,402之间，能够进一步当弯折区C发生弯曲时，对第二数据线金属层进行保护，进而提高弯折区C的弯曲性能，使得弯折区不易受到弯折的影响而损坏。
进一步的，如图4所示，本实施例的柔性显示面板还包括柔性电路板50，该柔性电路板50设置在柔性基板10的边缘处，与驱动层20连接，用于向驱动层20提供驱动信号。
参阅图5，图5是本发明柔性显示面板的制备方法一实施例的流程示意图，如图5所示，本实施例的柔性显示面板的制备方法可包括如下步骤：
S101、提供一柔性基板。
本实施例中，该柔性基板10包括如图1和图2所示的两个非弯折区A，B和位于该两个非弯折区A，B之间的弯折区C，其中，两个非弯折区A，B均为用作显示区。
在其他实施例中，柔性基板的非弯折区也可以大于两个，弯折区在多个非弯折区中每两个弯折区之间；多个非弯折区可以均用作显示区，也可以只有部分非弯折区用作显示区。
S102、在柔性基板的显示区中形成驱动层，并在柔性基板的弯折区中形成缓冲层。
驱动层用于形成驱动电路，缓冲层设置在柔性基板的弯折区，用于当弯折区发生形变时，对弯折区处产生的应力进行释放，进而对弯折区进行保护，防止弯折区由于应力的存在而受到破坏。
S103、在驱动层和缓冲层上形成有机发光器件层；其中，有机发光器件层中形成有若干个有机发光显示像素，驱动层中形成有用于向若干个有机发光显示像素提供驱动信号的至少一金属层。
在非弯折区的驱动层以及弯折区的缓冲层上方形成有机发光器件层。有机发光器件层中设置有若干个有机发光显示像素，可以理解的是，有机发光器件层中形成的有机发光显示像素与驱动层中形成驱动电路是一一对应的，即一个有机发光显示像素对应一个驱动电路。驱动电路包括设置在非弯折区的驱动层内的扫描金属层、多晶硅层和第一数据金属层，其中，第一数据金属层包括第一金属部分和第二金属部分，第一金属部分和第二金属部分通过多晶硅层连接，第一金属部分还连接于有机发光显示像素的阳极，第二金属部分用于向相应的有机发光显示像素提供数据信号。由扫描金属层、多晶硅层和第一数据金属层的结构可以看出，扫描金属层、多晶硅层和第一数据金属层构成了有机发光显示像素的薄膜晶体管。此外，非弯折区的驱动层中的金属层还包括设置在驱动层的多晶硅层之上的电容金属层。
进一步，由于弯折区内的有机发光显示像素的驱动电路也是设置在与该弯折区相邻的非弯折区中靠近弯折区的部分的，因此，弯折区内的有机发光显示像素的阳极需要向该弯折区相邻的非弯折区延伸，并与对应的第一金属部分连接，进而能够通过非弯折区内设置的驱动电路对弯折区内的有机发光显示像素提供驱动信号。
进一步，在弯折区中的缓冲层中设置有第二数据金属层，第二数据金属层用于连接弯折区两侧对应的第一数据金属层的第二金属部分。可以理解的是，第二数据金属层连接的第二金属部分是用于向弯折区中的有机发光显示像素提供驱动信号的第二金属部分。
另一方面，本发明还提供一柔性显示装置实施例，如图6所示，该柔性显示装置400中包括如图1至图4所示的柔性显示面板100，此外，还包括柔性显示面板100的封装结构60，封装结构60用于对柔性显示面板100进行封装和保护。
以上仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围。
Claims (15)
- 一种柔性显示装置，其中，包括一柔性显示面板；所述柔性显示面板包括至少两个非弯折区和位于所述至少两个非弯折区中相邻两个非弯折区之间的弯折区，所述至少两个非弯折区中的至少一个用作显示区，所述柔性显示面板的弯折区和所述显示区均设置有柔性基板和所述柔性基板上的功能层；设置于所述显示区中的功能层包括有机发光器件层和设置于所述柔性基板和所述有机发光器件层之间的驱动层；其中，所述有机发光器件层中形成有若干个有机发光显示像素；所述驱动层中设置有向所述有机发光显示像素提供驱动信号的至少一金属层；设置于所述弯折区中的功能层包括所述有机发光器件层和设置于所述柔性基板和所述有机发光器件层之间的缓冲层；在所述驱动层中，靠近所述弯折区处的所述金属层的设置密度大于远离所述弯折区处的所述金属层的设置密度；在所述驱动层中，靠近所述弯折区处的所述金属层的宽度小于远离所述弯折区处的所述金属层的宽度。
- 根据权利要求1所述的柔性显示装置，其中，所述驱动层的金属层包括多晶硅层及设置于所述多晶硅层之上的扫描金属层和第一数据金属层，其中，所述扫描金属层和第一数据金属层之间绝缘；所述第一数据金属层包括通过所述多晶硅层进行连接的第一金属部分和第二金属部分，所述第一金属部分连接于所述有机发光显示像素的阳极，所述第二金属部分用于向相应的所述有机发光显示像素提供数据信号。
- 根据权利要求2所述的柔性显示装置，其中，所述弯折区中的有机发光显示像素的阳极延伸至相邻的非弯折区，并与所述非弯折区中对应的第一金属部分连接；和/或所述驱动层的金属层还包括设置在所述驱动层的多晶硅层之上的电容金属层。
- 根据权利要求1所述的柔性显示装置，其中，所述弯折区的缓冲层中设置有第二数据金属层，所述第二数据金属层分别连接于所述弯折区两侧对应的所述第一数据金属层的第二金属部分。
- 根据权利要求4所述的柔性显示装置，其中，所述缓冲层包括层叠设置的若干层有机缓冲层，且所述第二数据金属层设置在所述若干有机缓冲层之间。
- 根据权利要求1所述的柔性显示面板，其中，所述柔性显示面板还包括：柔性电路板，设置在所述柔性基板的边缘处，与所述驱动层连接，用于向所述驱动电路层提供驱动信号。
- 一种柔性显示面板，其中，包括至少两个非弯折区和位于所述至少两个非弯折区中相邻两个非弯折区之间的弯折区，所述至少两个非弯折区中的至少一个用作显示区，所述柔性显示面板的弯折区和所述显示区均设置有柔性基板和所述柔性基板上的功能层；设置于所述显示区中的功能层包括有机发光器件层和设置于所述柔性基板和所述有机发光器件层之间的驱动层；其中，所述有机发光器件层中形成有若干个有机发光显示像素；所述驱动层中设置有向所述有机发光显示像素提供驱动信号的至少一金属层；设置于所述弯折区中的功能层包括所述有机发光器件层和设置于所述柔性基板和所述有机发光器件层之间的缓冲层。
- 根据权利要求7所述的柔性显示面板，其中，在所述驱动层中，靠近所述弯折区处的所述金属层的设置密度大于远离所述弯折区处的所述金属层的设置密度。
- 根据权利要求7所述的柔性显示面板，其中，在所述驱动层中，靠近所述弯折区处的所述金属层的宽度小于远离所述弯折区处的所述金属层的宽度。
- 根据权利要求7所述的柔性显示面板，其中，所述驱动层的金属层包括多晶硅层及设置于所述多晶硅层之上的扫描金属层和第一数据金属层，其中，所述扫描金属层和第一数据金属层之间绝缘；所述第一数据金属层包括通过所述多晶硅层进行连接的第一金属部分和第二金属部分，所述第一金属部分连接于所述有机发光显示像素的阳极，所述第二金属部分用于向相应的所述有机发光显示像素提供数据信号。
- 根据权利要求10所述的柔性显示面板，其中，所述弯折区中的有机发光显示像素的阳极延伸至相邻的非弯折区，并与所述非弯折区中对应的第一金属部分连接；和/或所述驱动层的金属层还包括设置在所述驱动层的多晶硅层之上的电容金属层。
- 根据权利要求7所述的柔性显示面板，其中，所述弯折区的缓冲层中设置有第二数据金属层，所述第二数据金属层分别连接于所述弯折区两侧对应的所述第一数据金属层的第二金属部分。
- 根据权利要求12所述的柔性显示面板，其中，所述缓冲层包括层叠设置的若干层有机缓冲层，且所述第二数据金属层设置在所述若干有机缓冲层之间。
- 根据权利要求7所述的柔性显示面板，其中，所述柔性显示面板还包括：柔性电路板，设置在所述柔性基板的边缘处，与所述驱动层连接，用于向所述驱动电路层提供驱动信号。
- 一种柔性显示面板的制备方法，其中，包括：提供一柔性基板；其中，所述柔性基板包括至少两个非折弯区和位于在所述至少两个非折弯区中相邻两个非弯折区之间的弯折区，所述至少两个非折弯区中的至少一个用作为显示区；在所述柔性基板的显示区中形成驱动层，并在所述柔性基板的弯折区中形成缓冲层；在所述驱动层和所述缓存层上形成有机发光器件层；其中，所述有机发光器件层中形成有若干个有机发光显示像素，所述驱动层中形成有用于向所述若干个有机发光显示像素提供驱动信号的至少一金属层。
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| CN108172123A (zh) * | 2018-01-19 | 2018-06-15 | 云谷（固安）科技有限公司 | 柔性显示装置及其制备方法 |
| CN108281387B (zh) * | 2018-01-23 | 2019-09-24 | 武汉华星光电半导体显示技术有限公司 | 柔性显示装置的制作方法及柔性显示装置 |
| CN108288637B (zh) * | 2018-01-24 | 2021-03-02 | 武汉华星光电半导体显示技术有限公司 | 柔性显示面板的制作方法及柔性显示面板 |
| CN108417604B (zh) * | 2018-02-27 | 2020-08-04 | 上海天马微电子有限公司 | 显示面板和显示装置 |
| CN108389884B (zh) * | 2018-03-07 | 2020-11-20 | 京东方科技集团股份有限公司 | 柔性阵列基板及其制备方法、柔性显示面板 |
| KR102454195B1 (ko) * | 2018-05-14 | 2022-10-13 | 삼성디스플레이 주식회사 | 폴더블 표시 장치 |
| CN108806511A (zh) * | 2018-06-14 | 2018-11-13 | 上海天马有机发光显示技术有限公司 | 一种折叠显示面板及折叠显示装置 |
| TWI683450B (zh) * | 2018-06-29 | 2020-01-21 | 友達光電股份有限公司 | 可撓式顯示面板及其製造方法 |
| CN109285863B (zh) * | 2018-08-30 | 2020-12-04 | 云谷（固安）科技有限公司 | 柔性显示面板及其制备方法、显示装置 |
| CN109461742B (zh) * | 2018-10-11 | 2020-11-24 | 武汉华星光电半导体显示技术有限公司 | 一种柔性显示面板 |
| CN109560111B (zh) * | 2018-11-30 | 2021-01-29 | 厦门天马微电子有限公司 | 有机发光显示面板和显示装置 |
| CN109671718B (zh) | 2018-12-04 | 2021-02-23 | 武汉华星光电半导体显示技术有限公司 | 柔性显示面板及其制作方法 |
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| CN109659347B (zh) * | 2018-12-19 | 2021-02-26 | 武汉华星光电半导体显示技术有限公司 | 柔性oled显示面板以及显示装置 |
| CN109524448B (zh) * | 2018-12-26 | 2020-11-24 | 深圳市华星光电半导体显示技术有限公司 | 一种柔性oled显示面板及其制备方法 |
| CN109830184B (zh) | 2019-02-22 | 2021-04-27 | 京东方科技集团股份有限公司 | 一种电致发光显示面板及其制备方法、显示装置 |
| CN110335887A (zh) * | 2019-06-25 | 2019-10-15 | 武汉华星光电半导体显示技术有限公司 | Oled显示面板 |
| CN111312721A (zh) * | 2019-11-07 | 2020-06-19 | 深圳市华星光电半导体显示技术有限公司 | 显示面板 |
| CN110853517A (zh) * | 2019-11-21 | 2020-02-28 | 京东方科技集团股份有限公司 | 一种显示基板及其制备方法、显示装置 |
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