WO2020237911A1 - Panneau d'affichage pliable et son procédé de fabrication - Google Patents

Panneau d'affichage pliable et son procédé de fabrication Download PDF

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Publication number
WO2020237911A1
WO2020237911A1 PCT/CN2019/106025 CN2019106025W WO2020237911A1 WO 2020237911 A1 WO2020237911 A1 WO 2020237911A1 CN 2019106025 W CN2019106025 W CN 2019106025W WO 2020237911 A1 WO2020237911 A1 WO 2020237911A1
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WO
WIPO (PCT)
Prior art keywords
mask
layer
display panel
opening
cathode
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Application number
PCT/CN2019/106025
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English (en)
Chinese (zh)
Inventor
郑园
Original Assignee
武汉华星光电半导体显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication of WO2020237911A1 publication Critical patent/WO2020237911A1/fr

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H10K50/82—Cathodes
    • H10K50/822—Cathodes characterised by their shape
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • 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

Definitions

  • This application relates to the technical field of display panels, and in particular to a foldable display panel and a manufacturing method thereof.
  • AMOLED Active-matrix organic light emitting diode
  • AMOLED panels have self-luminous characteristics. They use very thin organic material coatings and glass substrates. When current passes, these organic materials will Glow.
  • AMOLED panels have many advantages such as self-luminescence, wide viewing angle, high color saturation, low driving voltage, low power consumption, fast response, light weight, thin thickness, simple structure and low cost, and are regarded as one of the most promising products.
  • the folding screen is developed based on flexible AMOLED screen technology and has the advantages of being foldable, stretchable and easy to carry.
  • the film layer of the Open Mask (mask for evaporation with larger openings) involved in the production of flexible AMOLED screens generally includes a cathode layer, an organic layer in the encapsulation layer, and an inorganic layer.
  • the Open Mask corresponds to a panel with a hole, which belongs to the entire surface. For evaporation, packaging characteristics and display effects need to be considered. The size of the openings is limited to the space between the light-emitting area and the side of the panel.
  • the cathode layer is made of Mg/Ag metal and the inorganic layer used in the encapsulation layer is silicon oxynitride, the edges of the cathode and the encapsulation layer are prone to cracking or peeling after the screen is folded many times, which cannot effectively prevent the intrusion of water and oxygen from the outside.
  • the packaging effect, and the breakdown of the cathode affects the effective transmission of the signal, thereby affecting the normal display of the panel.
  • the folding screen technology has the problem that the edges of the cathode layer and the encapsulation layer in the folding area are prone to cracking or peeling during the folding process.
  • the present application provides a foldable display panel and a manufacturing method thereof.
  • This application provides a method for manufacturing a foldable display panel, including the following steps:
  • the organic light emitting device including a cathode
  • the display panel includes a folding area, at least part of the edges of the cathode and the film encapsulation layer are located in the folding area, and the edges of the cathode and the film encapsulation layer in the folding area are curved type.
  • the forming of the organic light emitting device includes the following steps:
  • a cathode is formed by vapor deposition on the light-emitting functional layer through the first mask; the shape and size of the cathode are the same as the first opening.
  • the thin film encapsulation layer includes a first inorganic layer, an organic layer, and a second inorganic layer;
  • the forming a thin film encapsulation layer on the organic light emitting device includes the following steps:
  • a second mask, a third mask and a fourth mask are provided; wherein a second opening is provided on the second mask, and a third opening is provided on the third mask, so The fourth mask is provided with a fourth opening;
  • first inorganic layer Forming a first inorganic layer on the organic light-emitting device by evaporation through the second mask; wherein the shape and size of the first inorganic layer are the same as the second opening;
  • An organic layer is vapor-deposited on the first inorganic layer through the third mask; wherein the shape and size of the organic layer are the same as the third opening; and
  • a second inorganic layer is formed by vapor deposition on the organic layer and the first inorganic layer through the fourth mask; wherein the shape and size of the second inorganic layer are the same as the fourth opening.
  • the curved shape includes a wave shape.
  • the projection of the film encapsulation layer in the direction perpendicular to the display panel completely covers the projection of the cathode in the direction perpendicular to the display panel .
  • the projection of the first inorganic layer in the direction perpendicular to the display panel completely covers the cathode in the direction perpendicular to the display panel. projection.
  • the embodiment of the present application also provides a manufacturing method of a foldable display panel, the display panel includes a folding area, and the manufacturing method includes the following steps:
  • a first mask, a second mask, a third mask, and a fourth mask are provided; wherein, the first mask is provided with a first opening, and the second mask is provided with a Two openings, a third opening is provided on the third mask, and a fourth opening is provided on the fourth mask;
  • a cathode is formed by vapor deposition on the light-emitting functional layer through the first mask; the shape and size of the cathode are the same as the first opening;
  • a second inorganic layer is formed by vapor deposition on the organic layer and the first inorganic layer through the fourth mask; wherein the shape and size of the second inorganic layer are the same as those of the fourth opening; wherein The first inorganic layer, the organic layer and the second inorganic layer constitute a thin film encapsulation layer.
  • the curved shape includes a wave shape.
  • the projection of the first inorganic layer in the direction perpendicular to the display panel completely covers the cathode in the direction perpendicular to the display panel. projection.
  • the embodiment of the present application also provides a foldable display panel, including an organic light emitting device and a thin film encapsulation layer covering the organic light emitting device; the organic light emitting device includes a cathode; wherein the display panel includes a folding area At least part of the edges of the cathode and the thin film packaging layer are located in the folding area, and the edges of the cathode and the thin film packaging layer located in the folding area are curved.
  • the thin film encapsulation layer includes a first inorganic layer, an organic layer, and a second inorganic layer that are sequentially disposed on the organic light-emitting device; the first inorganic layer At least part of the edges of the organic layer and the second inorganic layer are located in the folding area, and the edges of the first inorganic layer, the organic layer and the second inorganic layer located in the folding area are curved.
  • the curved shape includes a wave shape.
  • the cathode is formed by evaporation of a first mask; a first opening is provided on the first mask, and the first mask is connected to After the display panel is aligned, at least part of the edge of the first opening corresponds to the folding area, and the edge corresponding to the first opening and the folding area is curved; the shape and size of the cathode are The first openings are the same.
  • the first inorganic layer, the organic layer, and the second inorganic layer are respectively evaporated through a second mask, a third mask, and a fourth mask. form;
  • the second mask is provided with a second opening
  • the third mask is provided with a third opening
  • the fourth mask is provided with a fourth opening;
  • the second mask After the third mask and the fourth mask are respectively aligned with the display panel, at least part of the edges of the second, third, and fourth openings correspond to the folding area, and the second The edges of the opening, the third opening and the fourth opening corresponding to the folding area are curved;
  • the shapes and sizes of the first inorganic layer, the organic layer, and the second inorganic layer are the same as the corresponding second, third, and fourth openings, respectively.
  • the display panel further includes a flexible substrate and a thin film transistor array layer, and the flexible substrate is located on a side of the organic light emitting device away from the thin film encapsulation layer, so The thin film transistor array layer is located between the flexible substrate and the organic light emitting device, the thin film transistor array layer includes a plurality of barrier layers arranged at intervals, and the plurality of barrier layers are arranged around the cathode and the organic layer;
  • the first inorganic layer covers the cathode of the organic light-emitting device and the plurality of barrier layers; the organic layer covers the first inorganic layer, and the orthographic projection area of the organic layer on the flexible substrate is larger than The orthographic projection area of the cathode on the flexible substrate; the second inorganic layer covers the organic layer and the first inorganic layer.
  • the projection of the film encapsulation layer in the direction perpendicular to the display panel completely covers the projection of the cathode in the direction perpendicular to the display panel.
  • the beneficial effect of this application is: in this application, the edges of the cathode and the film encapsulation layer in the folding area of the display panel are curved, which can relieve the stress generated on the edges of the cathode and the film encapsulation layer in the folding area during the folding process.
  • Enhance the bending resistance of the cathode and the edge of the film encapsulation layer in the folding area reduce the risk of cracking or peeling of the edge of the cathode and the film encapsulation layer after folding, prevent external water vapor from entering the inside of the display panel, and ensure the display panel
  • the normal transmission of internal signals enhances the reliability of the foldable display panel and prolongs the service life of the display panel; the cathode and the thin film encapsulation layer are made by vapor deposition on the entire surface by using a mask with an opening.
  • the edge of the opening of the mask is set in a curved shape corresponding to the bending area of the display panel, so that the edges of the cathode and the film encapsulation layer in the bending area are curved, which can alleviate the impact on the folding area during the folding process.
  • the stress generated by the edges of the cathode and the film encapsulation layer strengthens the bending resistance of the edges of the cathode and the film encapsulation layer in the folding area, and reduces the risk of cracking or peeling of the edges of the cathode and the film encapsulation layer after folding.
  • FIG. 1 is a schematic block diagram of a process flow of a manufacturing method of a foldable display panel provided by an embodiment of the application;
  • FIG. 2 is a schematic bottom view of the structure of a foldable display panel provided by an embodiment of the application.
  • FIG. 3 is a schematic block diagram of the flow of another method for manufacturing a foldable display panel according to an embodiment of the application;
  • FIG. 4 is a schematic block diagram of the flow of another method for manufacturing a foldable display panel provided by an embodiment of the application;
  • FIG. 5 is a schematic diagram of the structure of a mask provided by an embodiment of the application.
  • Fig. 6 is a schematic cross-sectional structure diagram of part A-A' in Fig. 2.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • an embodiment of the present application provides a method for manufacturing a foldable display panel, including the following steps:
  • S102 forming a thin film encapsulation layer on the organic light emitting device; wherein the display panel includes a folding area, at least part of the edges of the cathode and the thin film encapsulation layer are located in the folding area, and the edges of the cathode and the thin film encapsulation layer in the folding area are curved.
  • the display panel 1 includes a folding area 5. At least part of the edges of the cathode 3 and the film encapsulation layer 4 of the display panel 1 are located in the folding area 5, and the cathode 3 and the film encapsulation layer 4 are located in the folding area 5.
  • the inner edge is curved.
  • the display panel 1 can be folded in different degrees through the folding area 5. During the folding process, the cathode 3 and the film packaging layer 4 located in the folding area 5 will also be folded; the cathode 3 and the film packaging layer 4 are located in the folding area 5
  • the edge of includes a wavy curve edge, of course, the specific shape of the curve is not limited to that provided in this embodiment.
  • the projection of the thin film encapsulation layer 4 in the direction perpendicular to the display panel 1 completely covers the projection of the cathode 3 in the direction perpendicular to the display panel 1 to ensure that the thin film encapsulation layer 4 completely covers the cathode 3 to protect the cathode 3. .
  • the edges of the cathode 3 and the film encapsulation layer 4 in the folding area 5 of the display panel 1 are curved, which can alleviate the impact on the edges of the cathode 3 and the film encapsulation layer 4 in the folding area 5 during the folding process.
  • Stress strengthen the bending resistance of the edges of the cathode 3 and the film encapsulation layer 4 in the folding area 5, reduce the risk of cracking or peeling of the edges of the cathode 3 and the film encapsulation layer 4 after folding, and prevent external water vapor from invading the display panel 1 and ensure the normal transmission of internal signals of the display panel 1, thereby enhancing the reliability of the foldable display panel 1 and prolonging the service life of the display panel 1.
  • an embodiment of the present application also provides a method for manufacturing a foldable display panel.
  • the organic light emitting device 2 of the display panel 1 includes The light-emitting functional layer 6 and the cathode 3, as shown in FIG. 3, step S101 specifically includes the following steps:
  • S302 Provide a first mask; wherein a first opening is provided on the first mask;
  • S304 forming a cathode by vapor deposition on the light-emitting function layer through the first mask; the shape and size of the cathode are the same as the first opening.
  • edges of the formed cathode 3 are located in the folding area 5, and the edges of the cathode 3 located in the folding area 5 are curved.
  • the thin film encapsulation layer 4 includes a first inorganic layer 9, an organic layer 10, and a second inorganic layer 11. As shown in FIG. 4, in step S102, a thin film is formed on the organic light emitting device.
  • the encapsulation layer specifically includes the following steps:
  • S401 Provide a second mask, a third mask and a fourth mask; wherein the second mask is provided with a second opening, the third mask is provided with a third opening, and the fourth mask is provided A fourth opening is provided on the membrane plate;
  • S402 align the second mask with the display panel; at least part of the edge of the second opening corresponds to the folding area, and the edge corresponding to the second opening and the folding area is curved;
  • S403 forming a first inorganic layer by evaporation on the organic light-emitting device through a second mask; wherein the shape and size of the first inorganic layer are the same as the second opening;
  • S404 align the third mask with the display panel; at least part of the edge of the third opening corresponds to the folding area, and the edge corresponding to the third opening and the folding area is curved;
  • S405 forming an organic layer by evaporation on the first inorganic layer through a third mask; wherein the shape and size of the organic layer are the same as the third opening;
  • S406 align the fourth mask with the display panel; at least part of the edge of the fourth opening corresponds to the folding area, and the edge of the fourth opening corresponding to the folding area is curved;
  • S407 forming a second inorganic layer by vapor deposition on the organic layer and the first inorganic layer through a fourth mask; wherein the shape and size of the second inorganic layer are the same as the fourth opening.
  • the edges of the first inorganic layer 9, the organic layer 10, and the second inorganic layer 11 of the formed thin film encapsulation layer 4 are located in the folding area 5, and the first inorganic layer 9, the organic layer 10 and the second inorganic layer
  • the edge of 11 located in the folding zone 5 is curved.
  • the projection of the first inorganic layer 9 in the direction perpendicular to the display panel 1 completely covers the projection of the cathode 3 in the direction perpendicular to the display panel 1, ensuring that the first inorganic layer 9 of the thin film encapsulation layer 4 completely covers the cathode 3. Play the role of protecting the cathode 3.
  • the shapes of the curved edges of the cathode 3, the first inorganic layer 9, the organic layer 10, and the second inorganic layer 11 in the folding area 5 may be the same or different, and there is no limitation here.
  • the edges of the first inorganic layer 9, the organic layer 10, and the second inorganic layer 11 of the cathode 3 and the thin-film encapsulation layer 4 in the folding area 5 are wavy curves.
  • the specific shape of the curve is not limited to this.
  • the first inorganic layer 9, the organic layer 10, and the second inorganic layer 11 of the cathode 3 and the thin-film encapsulation layer 4 use a first mask 7, a second mask 12, a third mask 14 and a fourth mask, respectively Plate 16 (Because the difference between the first, second, third, and fourth masks lies in the size and shape of the openings, in the embodiment of the application, FIG. 5 is used to illustrate the above four masks.
  • the structure of the film plate is made by evaporation on the entire surface; each mask plate is provided with an opening, and each opening corresponds to the edge of the folding area 5 of the display panel 1 and is curved, so that the cathode 3 and the film package
  • the edges of the first inorganic layer 9, the organic layer 10, and the second inorganic layer 11 of the layer 4 in the folding area 5 are all curved, which can relieve the damage to the cathode 3 and the thin film encapsulation layer 4 in the folding area 5 during the folding process.
  • the stress generated at the edge of each layer strengthens the bending resistance of each layer of the cathode 3 and the film encapsulation layer 4 in the folding zone 5, and reduces the edge of each layer of the cathode 3 and the film encapsulation layer 4 after folding Risk of cracking or peeling.
  • an embodiment of the present application also provides a foldable display panel 1, including an organic light-emitting device 2 and a thin film encapsulation layer 4 covering the organic light-emitting device 2;
  • the organic light-emitting device 2 includes a cathode 3;
  • the display panel 1 includes a folding area 5, at least part of the edges of the cathode 3 and the film packaging layer 4 are located in the folding area 5, and the edges of the cathode 3 and the film packaging layer 4 located in the folding area 5 are curved.
  • the organic light-emitting device 2 further includes a light-emitting functional layer 6 for luminous display patterns, and the cathode 3 covers the light-emitting functional layer 6; the display panel 1 includes a display area (light-emitting area), and the entire surface of the cathode 3 covers the display area.
  • the edge of the cathode 3 exceeds the edge of the display area, that is, the projection area of the cathode 3 in the direction perpendicular to the display panel 1 is larger than the area of the display area; the display panel 1 can be folded through the folding area 5 to form multiple sub-display areas; in addition, the film
  • the entire surface of the encapsulation layer 4 covers the cathode 3, and the edge of the film encapsulation layer 4 exceeds the edge of the cathode 3, that is, the projection area of the film encapsulation layer 4 in the direction perpendicular to the display panel 1 is larger than that of the cathode 3 in the direction perpendicular to the display panel 1.
  • the film encapsulation layer 4 can effectively achieve the encapsulation effect, protect the cathode 3, and prevent external water vapor from intruding and affecting the performance of the display panel 1.
  • the edges of the cathode 3 and the film encapsulation layer 4 in the folding area 5 of the display panel 1 are curved, which can alleviate the impact on the edges of the cathode 3 and the film encapsulation layer 4 in the folding area 5 during the folding process.
  • Stress strengthen the bending resistance of the edges of the cathode 3 and the film encapsulation layer 4 in the folding area 5, reduce the risk of cracking or peeling of the edges of the cathode 3 and the film encapsulation layer 4 after folding, and prevent external water vapor from invading the display panel 1 And ensure the normal transmission of internal signals of the display panel 1, thereby enhancing the reliability of the foldable display panel 1 and prolonging the service life of the display panel 1.
  • the thin film encapsulation layer 4 includes a first inorganic layer 9, an organic layer 10, and a second inorganic layer 11 that are sequentially disposed on the organic light-emitting device 2; the first inorganic layer 9, the organic layer At least part of the edges of the second inorganic layer 10 and the second inorganic layer 11 are located in the folding area 5, and the edges of the first inorganic layer 9, the organic layer 10 and the second inorganic layer 11 located in the folding area 5 are curved.
  • the first inorganic layer 9 covers the cathode 3 to prevent external water vapor from entering the display area of the display panel 1 and affecting the performance of the display panel 1;
  • the organic layer 10 covers the first inorganic layer 9 and plays a buffering role.
  • the second inorganic layer 11 covers the organic layer 10 to protect the organic layer 10 and prevent the intrusion of external water vapor.
  • the shapes of the curved edges of the cathode 3, the first inorganic layer 9, the organic layer 10, and the second inorganic layer 11 in the folding area 5 may be the same or different, and there is no limitation here.
  • the edges of the first inorganic layer 9, the organic layer 10, and the second inorganic layer 11 of the thin film encapsulation layer 4 in the folding area 5 are all curved, which can alleviate the damage to the thin film in the folding area 5 during the folding process.
  • the stress generated at the edge of each layer of the encapsulation layer 4 strengthens the bending resistance of each layer of the film encapsulation layer 4 in the folding area 5, and reduces the cracking or peeling of the edge of each layer of the film encapsulation layer 4 after folding risk.
  • the curved shape includes a wave shape.
  • the edges of each layer of the cathode 3 and the film encapsulation layer 4 in the folded area 5 are wavy curves, which increases the area of the edges of the cathode 3 and the film encapsulation layer 4, so that the edges are The stress received is dispersed, reducing the risk of cracking or peeling at the edges of each of the cathode 3 and the film packaging layer 4 after folding.
  • the cathode 3 is formed by evaporation of a first mask 7; the first mask 7 is provided with a first opening 8, and the first mask 7 is opposite to the display panel 1. After positioning, at least part of the edges of the first opening 8 correspond to the folding area 5, and the edges of the first opening 8 and the folding area 5 are curved; the cathode 3 has the same shape and size as the first opening 8.
  • the first opening 8 of the first mask 7 is curved corresponding to the edge of the folding area 5, and the shape and size of the cathode 3 are the same as the size and shape of the corresponding first opening 8, so that the cathode 3
  • the edge of the folding area 5 is curved, which effectively relieves the stress on the edge of the cathode 3 when it is bent.
  • the first inorganic layer 9, the organic layer 10 and the second inorganic layer 11 pass through the second mask 12, the third mask 14 and the fourth mask 16 respectively (due to the first mask
  • the difference between the second mask, the third mask and the fourth mask lies in the size and shape of the opening.
  • the second mask 12 is provided with a second opening 13
  • the third mask 14 is provided with a third opening
  • the fourth mask 16 is provided with a fourth opening 17
  • the second mask 12 After the three mask 14 and the fourth mask 16 are aligned with the display panel 1, at least part of the edges of the second opening 13, the third opening 15 and the fourth opening 17 correspond to the folding area 5, and the second opening 13
  • the edges of the third opening 15 and the fourth opening 17 corresponding to the folding area 5 are curved; the shapes and sizes of the first inorganic layer 9, the organic layer 10, and the second inorganic layer 11 correspond to those of the corresponding second opening 13,
  • the third opening 15 and the fourth opening 17 are the same.
  • the first inorganic layer 9, the organic layer 10, and the second inorganic layer 11 of the thin-film encapsulation layer 4 are made through the corresponding second mask 12, third mask 14, and fourth mask 16.
  • the second opening 13, the third opening 15 and the fourth opening 17 are curved corresponding to the edges of the folding area 5; the shapes and sizes of the first inorganic layer 9, the organic layer 10, and the second inorganic layer 11 are respectively corresponding to the corresponding first
  • the sizes and shapes of the two openings 13, the third opening 15 and the fourth opening 17 are the same, so that the prepared first inorganic layer 9, the organic layer 10 and the second inorganic layer 11 are curved at the edge of the folding area 5, which is effective
  • the stress on the edges of the first inorganic layer 9, the organic layer 10 and the second inorganic layer 11 when bent is relieved.
  • the display panel 1 further includes a flexible substrate 18 and a thin film transistor array layer 19.
  • the flexible substrate 18 is located on the side of the organic light emitting device 2 away from the thin film packaging layer 4, and the thin film transistor array layer 19 is located between the flexible substrate 18 and the organic light-emitting device 2, the thin-film transistor array layer 19 includes a plurality of barrier layers 20 arranged at intervals.
  • the multiple barrier layers 20 are arranged around the cathode 3 and the organic layer 10; the first inorganic layer 9 covers the organic light-emitting device 2 on the cathode 3 and multiple barrier layers 20; the organic layer 10 covers the first inorganic layer 9, and the orthographic area of the organic layer 10 on the flexible substrate 18 is larger than the orthographic area of the cathode 3 on the flexible substrate 18; The second inorganic layer 11 covers the organic layer 10 and the first inorganic layer 9.
  • the thin film transistor array layer 19 also includes a buffer layer, a first metal layer, a second metal layer, a flat layer, an anode, and a pixel definition layer (not shown in the figure) that are sequentially arranged on the flexible substrate 18;
  • the layer 20 covers the anode, and the barrier layer 20 can be formed by the same process as the pixel definition layer, or can be formed by the same process as the flat layer;
  • the light-emitting function layer 6 of the organic light emitting device 2 covers the anode and part of the pixel definition layer.
  • the first inorganic layer 9 covers the cathode 3 and the multiple barrier layers 20 to prevent external water vapor from entering the interior of the display panel 1 and affecting the performance of the display panel 1.
  • the organic layer 10 covers the first inorganic On the layer 9, and completely shield the cathode 3 to protect the cathode 3 and the light-emitting function layer 6.
  • the edge of the organic layer 10 is located on the side of the barrier layer 20 close to the display area to prevent the organic layer 10 from overflowing the first inorganic layer 9
  • the edge of the second inorganic layer 11; the first inorganic layer 9 covers the multiple barrier layers 20, and the second inorganic layer 11 covers the organic layer 10 and the first inorganic layer 9 to protect the organic layer 10. It also effectively prevents external water vapor from intruding into the interior of the display panel 1; this embodiment effectively protects the internal structure of the display panel 1, ensures the display performance of the display panel 1, and prolongs the service life of the display panel 1.

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  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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Abstract

La présente invention concerne un panneau d'affichage pliable et son procédé de fabrication, le procédé de fabrication comprenant les étapes suivantes consistant : à former un dispositif électroluminescent organique, le dispositif électroluminescent organique comprenant une cathode ; et à former une couche d'encapsulation de film mince sur le dispositif électroluminescent organique ; le panneau d'affichage comprend une zone de pliage, au moins une partie des bords de la cathode et de la couche d'encapsulation de film mince étant positionnée dans la zone de pliage, et les bords de la cathode et de la couche d'encapsulation de film mince positionnés dans la zone de pliage étant incurvés.
PCT/CN2019/106025 2019-05-29 2019-09-16 Panneau d'affichage pliable et son procédé de fabrication WO2020237911A1 (fr)

Applications Claiming Priority (2)

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CN201910455662.0A CN110190102A (zh) 2019-05-29 2019-05-29 一种可折叠的显示面板及其制作方法
CN201910455662.0 2019-05-29

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CN114592179A (zh) * 2022-03-07 2022-06-07 京东方科技集团股份有限公司 掩模版及显示装置的制备方法

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Publication number Priority date Publication date Assignee Title
CN110190102A (zh) * 2019-05-29 2019-08-30 武汉华星光电半导体显示技术有限公司 一种可折叠的显示面板及其制作方法
CN110752310B (zh) * 2019-10-23 2022-03-01 昆山工研院新型平板显示技术中心有限公司 一种柔性显示面板及其制造方法以及柔性显示终端
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