WO2021189538A1 - Oled显示装置 - Google Patents

Oled显示装置 Download PDF

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Publication number
WO2021189538A1
WO2021189538A1 PCT/CN2020/084025 CN2020084025W WO2021189538A1 WO 2021189538 A1 WO2021189538 A1 WO 2021189538A1 CN 2020084025 W CN2020084025 W CN 2020084025W WO 2021189538 A1 WO2021189538 A1 WO 2021189538A1
Authority
WO
WIPO (PCT)
Prior art keywords
middle frame
display device
metal sheet
oled display
width
Prior art date
Application number
PCT/CN2020/084025
Other languages
English (en)
French (fr)
Inventor
曹欢
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.)
Filing date
Publication date
Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US16/957,754 priority Critical patent/US11950443B2/en
Priority to EP20842545.4A priority patent/EP4131389A4/en
Publication of WO2021189538A1 publication Critical patent/WO2021189538A1/zh

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Classifications

    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1641—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being formed by a plurality of foldable display components
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
    • 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
    • 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
    • G09F9/33—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 being semiconductor devices, e.g. diodes
    • G09F9/335—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 being semiconductor devices, e.g. diodes being organic light emitting diodes [OLED]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • H04M1/0268—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel
    • 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
    • H10K59/40—OLEDs integrated with touch screens
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
    • H04M1/0214—Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • 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
    • 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

Definitions

  • the present disclosure relates to the field of display technology, and in particular to an OLED display device.
  • the display panel of the flexible display screen is glued and fixed to the middle frame by a kind of adhesive.
  • adhesives are not used in this area, that is, there is a free vacuum state between the display and the folding area. Therefore, during the folding and unfolding process, the adhesion between the display and the middle frame in this area is stable Low, easy to detach, causing problems such as floating, bubbles, etc., affecting the appearance and easily causing foreign matter to invade and affect the display quality.
  • the present application relates to an OLED display device, which is used to solve the problem that there is a low stability of adhesion between the display panel of the flexible folding display screen and the middle frame in the folding area in the prior art, resulting in the display panel of the flexible folding display screen when the flexible folding display screen is folded. It is easy to separate from the middle frame, causing problems such as floating, bubbles, etc. that affect the appearance and easily cause foreign matter to invade and affect the display quality.
  • the OLED display device includes: a display panel, a metal sheet, and a middle frame;
  • the display panel is closely attached to one side of the metal sheet, and is divided into a folding area and a non-folding area;
  • the metal sheet is arranged between the middle frame and the display panel;
  • the middle frame is on the side of the metal sheet away from the display panel
  • the folding area of the middle frame is provided with a central piece, and the folding area of the metal sheet is provided with a magnet piece, and the magnet piece is arranged right on the central piece.
  • the middle frame and the metal piece All are rectangular.
  • the magnet sheet is attached to a side of the metal sheet close to the middle frame.
  • the magnet piece is arranged on the metal piece in a plurality of areas, and each area is arranged in spaced dots.
  • the width of the magnet pieces in each area is equal to the width of the hub member or the length of the magnet pieces in each area is equal to the length of the hub member.
  • the shape of the magnet piece is: a circle, an ellipse, or various polygons.
  • the length and width of the metal sheet are equal to the length and width of the middle frame, and the metal sheet has a certain preset thickness.
  • the preset thickness range of the metal sheet is: 0.1-0.3 mm.
  • the pivot member is a bendable hinge
  • the folding area of the middle frame is provided with a groove
  • the pivot member is provided in the groove of the middle frame, and passes through the The groove is aligned with the magnet piece on the metal piece.
  • the material of the hub member is selected from a metal with magnetism.
  • the thickness of the central member is less than or equal to the thickness of the middle frame, and the width of the central member is equal to the width of the groove.
  • the present application also provides an OLED display device, the OLED display device includes: a display panel, a metal sheet, and a middle frame;
  • the display panel is closely attached to one side of the metal sheet, and is divided into a folding area and a non-folding area;
  • the metal sheet is arranged between the middle frame and the display panel;
  • the middle frame is on the side of the metal sheet away from the display panel
  • the folding area of the middle frame is provided with a central piece, and the folding area of the metal sheet is provided with a magnet piece, and the magnet piece is arranged directly to the central piece.
  • the magnet sheet is attached to a side of the metal sheet close to the middle frame.
  • the magnet piece is arranged on the metal piece in a plurality of areas, and each area is arranged in spaced dots.
  • the width of the magnet pieces in each area is equal to the width of the hub member or the length of the magnet pieces in each area is equal to the length of the hub member.
  • the shape of the magnet piece is: a circle, an ellipse, or various polygons.
  • the length and width of the metal sheet are equal to the length and width of the middle frame, and the metal sheet has a certain preset thickness.
  • the preset thickness range of the metal sheet is: 0.1-0.3 mm.
  • the pivot member is a bendable hinge
  • the folding area of the middle frame is provided with a groove
  • the pivot member is provided in the groove of the middle frame, and passes through the The groove is aligned with the magnet piece on the metal piece.
  • the material of the hub member is selected from a metal with magnetism.
  • the thickness of the central member is less than or equal to the thickness of the middle frame, and the width of the central member is equal to the width of the groove.
  • the beneficial effects of the OLED display device provided by the present application are:
  • the OLED display device includes: a display panel, a metal sheet, and a middle frame; the display panel is closely attached to one side of the metal sheet, and is divided into a folding area and a non-folding area;
  • the metal sheet is arranged between the middle frame and the display panel; the middle frame is on the side of the metal sheet facing away from the display panel; the folding area of the middle frame is provided with a pivot member, the The folding area of the metal sheet is provided with a magnet sheet, and the magnet sheet is set to the center member; the adhesion stability between the middle frame and the display panel can be improved, so that when the OLED display device is folded , The display panel and the middle frame are not easy to fall off.
  • FIG. 1 is a schematic diagram of a first structure of an OLED display device provided by an embodiment of the application.
  • FIG. 2 is a schematic diagram of a first structure of a metal sheet provided by an embodiment of the application.
  • FIG. 3 is a schematic diagram of a second structure of a metal sheet provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram of a third structure of a metal sheet provided by an embodiment of the application.
  • FIG. 5 is a schematic diagram of a second structure of an OLED display device provided by an embodiment of the application.
  • 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 present application, “multiple” means two or more than two, unless otherwise specifically defined.
  • connection should be understood in a broad sense, unless otherwise clearly specified and limited.
  • it can be a fixed connection or a detachable connection.
  • Connected or integrally connected it can be mechanically connected, or electrically connected 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 the interaction of two components relation.
  • an intermediate medium it can be the internal communication of two components or the interaction of two components relation.
  • the "above” or “below” of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features Not in direct contact but through other features between them.
  • the "above”, “above” and “above” of the first feature on the second feature include the first feature directly above and obliquely above the second feature, or it simply means that the first feature is higher in level than the second feature.
  • the “below”, “below” and “below” of the second feature of the first feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
  • This application provides an OLED display device. For details, please refer to FIGS. 1 to 5.
  • the display panel of the flexible display screen is glued and fixed to the middle frame through a kind of adhesive.
  • the adhesive is generally not used in this area, that is, the display screen and the middle frame.
  • FIG. 1 is a schematic diagram of a first structure of an OLED display device provided by an embodiment of the present application.
  • the OLED display device includes: a display panel 1, a metal sheet 2 and a middle frame 3; the display panel 1 is closely attached to one side of the metal sheet 2, and is divided into a folding area 21 and a non-folding area 22;
  • the sheet 2 is arranged between the middle frame 3 and the display panel 1; the middle frame 3 is on the side of the metal sheet 2 facing away from the display panel 1; the folding area 31 of the middle frame 3
  • a central piece is provided, and the folding area 21 of the metal sheet 2 is provided with a magnet piece 24, and the magnet piece 24 is arranged right on the central piece.
  • the middle frame 3 and the metal sheet 2 are both rectangular and have the same shape as the display panel 1.
  • the magnet sheet 24 is attached to the side of the metal sheet 2 close to the middle frame 3, and the magnet sheet 24 is attached to the side of the metal sheet 2 close to the middle frame 2, and each area is spaced apart Dot arrangement, that is, equidistant array or unequal distance array.
  • the magnet piece 24 includes a variety of shapes: circular, elliptical, various polygons, and so on.
  • the folding area 31 of the middle frame 3 is provided with a groove, and the central piece is arranged in the groove.
  • the central piece is a hinge and can be rotated at a certain angle, and the rotation angle is greater than or equal to 180 degrees.
  • the magnet piece 24 on the metal piece 2 is aligned and installed with the metal piece 2 through the groove on the middle frame 3.
  • the width of the magnet pieces 24 in each area is equal to the width of the hub member, that is, the magnet pieces 24 in each area are arranged laterally at intervals, as shown in Figs. 2 and 3 .
  • the length of the magnet pieces 24 in each area is equal to the length of the hub member, that is, the magnet pieces 24 in each area are arranged at intervals in a longitudinal direction, as shown in FIG. 4 for details.
  • the number of regions of the magnet pieces 24 is greater than or equal to two.
  • the length and width of the metal sheet 2 are equal to the length and width of the middle frame 3, the metal sheet 2 has a certain preset thickness, and the preset thickness range of the metal sheet 2 is: 0.1-0.3 mm.
  • the material of the central member is selected from a metal with magnetism, for example, various ferrous metals with gloss, good electrical conductivity, thermal conductivity and mechanical properties: iron alloy, iron, cobalt, nickel; the metal sheet is selected to be resistant to stretching Stainless steel material.
  • the thickness of the central member is less than or equal to the thickness of the middle frame 3, and the width of the central member is equal to the width of the groove.
  • the middle frame 3 and the metal sheet 2 are glued with industrial AB glue with strong viscosity.
  • the AB glue AB glue is called a two-component adhesive, and is another name for two-component hardened glue.
  • One liquid is the glue, the other is the hardener.
  • the two liquids are mixed to harden. It does not depend on temperature to harden and should be matured. Therefore, it is a kind of normal temperature hardening glue, which is sometimes used for modeling.
  • Component A is acrylic modified epoxy or epoxy resin, or contains catalysts and other additives
  • component B is modified amine or other hardeners, or contains catalysts and other additives.
  • the catalyst can control the curing time
  • other additives can control the performance (such as viscosity, rigidity, flexibility, adhesion, etc.).
  • optically clear adhesive 1c Optically Clear Adhesive
  • OCA Optically Clear Adhesive
  • the optically clear adhesive 1c has high light transmittance (total light transmittance>99%).
  • high adhesion, high weather resistance, water resistance, high temperature resistance, UV resistance, controlled thickness, uniform spacing, long-term use will not cause yellowing (yellowing), peeling and deterioration problems.
  • the folding area 31 (that is, the central area) of the middle frame 3 changes accordingly with the bending angle and direction. Since the folding area 31 is provided with a hinge, When the OLED display device is bent, the width of the central area is greater than the width of the central area before bending; therefore, when the metal sheet 2 is bent, the magnet pieces 24 are spaced point magnet pieces 24 can be more closely attached to the central member in the middle frame 3, and the adhesion stability will be higher. No matter what angle the metal sheet 2 and the middle frame 3 are folded to, the magnet sheet 24 can be The central piece is perfectly fitted.
  • the display panel includes:
  • the substrate 11 is used to deposit various film layers.
  • the substrate 11 may be a rigid substrate, such as a glass substrate or a quartz substrate; the substrate 11 may also be a flexible substrate, preferably a flexible substrate, such as a resin substrate, which may be Organic substrates such as polyimide substrates, polyamide substrates, polycarbonate substrates, and polyethersulfone substrates;
  • the thin film transistor layer 12 is arranged on the side of the base substrate 11 and is made by a chemical vapor deposition method.
  • the thin film transistor layer 12 includes a gate layer and a source and drain layer.
  • the thin film transistor may be a top gate type. Thin film transistors or bottom-gate thin film transistors;
  • the OLED device layer 13 is arranged on the side of the thin film transistor layer 12 away from the base substrate 11.
  • the OLED device layer 13 includes: a cathode layer, a light emitting layer, an electron injection layer, an electron transport layer, and a hole injection layer , Hole transport layer and blocking layer.
  • the material of the cathode layer adopts a material with a low work function, which can improve the efficiency of electron injection; second, it can reduce the Joule heat generated during OLED operation and increase the life of the device;
  • the anode layer It is not arranged in the OLED device layer, but is arranged on the side of the flat layer away from the OLED device layer;
  • the light emission principle of the OLED device layer is: the circuit connected through the anode layer and the cathode layer is connected to the anode layer and Voltage is applied to the cathode layer, holes are injected into the anode layer, electrons are injected into the cathode layer, and the formed electrons and holes meet in the light-emitting material layer to generate excitons, thereby exciting the light-emitting material layer to emit light;
  • the flattening layer 14 is arranged on the side of the OLED device layer 13 away from the thin film transistor 12, and is used to flatten the surface of the OLED device layer 13;
  • the pixel definition layer 15 is arranged at intervals on the side of the flat layer 14 away from the OLED device layer 13. Generally, a half tone mask is used to define the pattern of the pixel definition layer. A photoresist layer is coated on the definition layer 15, a halftone mask is placed above the pixel definition layer, and then yellow light is used to pass through the halftone mask to expose and develop the photoresist layer on the surface of the pixel definition layer 15 Processing, and then using the photoresist layer processed by exposure and development as a barrier layer to etch the pixel defining layer 15. The amount of exposure to yellow light affects the thickness of the pixel defining layer 15;
  • the anode layer 16 is arranged at intervals on the side of the flat layer 14 away from the OLED device layer 13, and the multiple anode layers 16 between the pixel definition layers 15 are mainly used for light reflection; A via hole is formed in the flat layer 14 to be electrically connected to the OLED device layer 13 to complete light emission; the anode layer 16 needs to inject holes into the OLED, so it needs to have a higher function. Function, therefore, the material generally selected for the anode layer 16 is ITO, IZO, Au, Pt, Si, etc.;
  • the light-emitting layer 17 is divided into: a red light-emitting layer 171, a green light-emitting layer 172, and a blue light-emitting layer 173 or a red light-emitting layer 171, a green light-emitting layer 172, a blue light-emitting layer 173, and a white light-emitting layer 174 (not shown in the figure) ), are respectively arranged at intervals between the pixel defining layers 15, and each of the anode layers 16 is on the side facing away from the flat layer 14; the light-emitting layer 17 is generally prepared by inkjet printing;
  • the thin film encapsulation layer 18 is further divided into: a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer, which are sequentially stacked on the side of the pixel definition layer 15 away from the flat layer 14 to protect the
  • the internal film layer of the display panel prevents the intrusion of external moisture and impurities from affecting the display quality of the display panel.
  • a polarizing dye molecular layer is uniformly distributed in the polarizer, and the polarizing dye molecular layer may be an iodine molecular layer.
  • organic dyes such as iodine
  • PVA polyvinyl alcohol
  • a second polarizing layer with alternately arranged light-transmitting areas and opaque areas can be formed.
  • the undyed area on the PVA film is the light-transmitting layer.
  • Light area, the dyeing area is the polarization area
  • the preset direction when the PVA film is stretched is the absorption axis direction of the polarization area;
  • the touch function layer 1a is arranged between the polarizer 18 and the cover 1b;
  • a cover plate 1b which covers the side of the touch function layer 1a away from the polarizer 19, and the cover plate 1b is a glass cover plate;
  • the touch The control function layer 1a and the cover plate 1b are all pasted by the optical transparent glue (1c1, 1c2, 1c3).

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  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Signal Processing (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种OLED显示装置，OLED显示装置包括：显示面板(1)、金属片(2)与中框(3)；显示面板(1)紧贴在金属片(2)的一侧，分为折叠区(21)和非折叠区(22)；金属片(2)设置在中框(3)与显示面板(1)之间；中框(3)在金属片(2)背离显示面板(1)的一侧；中框(3)的折叠区(31)设置有中枢件，金属片(2)的折叠区(21)设置有磁铁片(24)，磁铁片(24)正对于中枢件进行设置。

Description

OLED显示装置 技术领域
本揭示涉及显示技术领域，尤其涉及一种OLED显示装置。
 背景技术
柔性折叠显示屏的研究和应用已越来越受到大家关注，对于折叠终端而言，柔性显示屏的显示面板通过一种背胶与中框粘贴固定，而在显示屏的折叠区由于需要运动，一般在此区域内不使用背胶黏贴，即显示屏和折叠区之间是自由的真空状态，因此，在折叠和展开的过程中，该区域的显示屏与中框之间黏贴稳定性较低，易脱离，产生浮起、气泡等问题，影响外观且易导致异物侵入而影响显示质量。
因此，现有的柔性折叠显示屏技术中，还存在着柔性折叠显示屏的显示面板与中框之间在折叠区黏贴稳定性较低，导致柔性折叠显示屏在折叠时显示面板与中框之间易脱离，产生浮起、气泡等影响外观且易导致异物侵入影响显示质量的问题，急需改进。
 技术问题
本申请涉及一种OLED显示装置，用于解决现有技术中存在着柔性折叠显示屏的显示面板与中框之间在折叠区黏贴稳定性较低，导致柔性折叠显示屏在折叠时显示面板与中框之间易脱离，产生浮起、气泡等影响外观且易导致异物侵入影响显示质量的问题。
 技术解决方案
为解决上述问题，本申请提供的技术方案如下：
本申请提供的一种OLED显示装置，所述OLED显示装置包括：显示面板、金属片与中框；
所述显示面板紧贴在所述金属片的一侧，分为折叠区和非折叠区；
所述金属片设置在所述中框与所述显示面板之间；
所述中框在所述金属片背离所述显示面板的一侧；
所述中框的所述折叠区设置有中枢件，所述金属片的所述折叠区设置有磁铁片，所述磁铁片正对于所述中枢件进行设置，所述中框与所述金属片均为矩形。
根据本申请提供的一实施例，所述磁铁片贴在所述金属片靠近所述中框的一侧。
根据本申请提供的一实施例，所述磁铁片分多个区域设置在所述金属片上，每个区域呈间隔的点状排布。
根据本申请提供的一实施例，每个区域的所述磁铁片的宽度等于所述中枢件的宽度或是每个区域的所述磁铁片的长度等于所述中枢件的长度。
根据本申请提供的一实施例，所述磁铁片的形状为：圆形、椭圆形或是各种多边形。
根据本申请提供的一实施例，所述金属片的长、宽等于所述中框的长、宽，所述金属片具有一定的预设厚度。
根据本申请提供的一实施例，所述金属片的预设厚度范围为：0.1-0.3mm。
根据本申请提供的一实施例，所述中枢件为可弯折的铰链，所述中框的折叠区设置有凹槽，所述中枢件设置在所述中框的凹槽内，通过所述凹槽与所述金属片上的磁铁片进行对位。
根据本申请提供的一实施例，所述中枢件的材料选用具有磁性的金属。
根据本申请提供的一实施例，所述中枢件的厚度小于等于所述中框的厚度，所述中枢件的宽度等于所述凹槽的宽度。
本申请还提供一种OLED显示装置，所述OLED显示装置包括：显示面板、金属片与中框；
所述显示面板紧贴在所述金属片的一侧，分为折叠区和非折叠区；
所述金属片设置在所述中框与所述显示面板之间；
所述中框在所述金属片背离所述显示面板的一侧；
所述中框的所述折叠区设置有中枢件，所述金属片的所述折叠区设置有磁铁片，所述磁铁片正对于所述中枢件进行设置。
根据本申请提供的一实施例，所述磁铁片贴在所述金属片靠近所述中框的一侧。
根据本申请提供的一实施例，所述磁铁片分多个区域设置在所述金属片上，每个区域呈间隔的点状排布。
根据本申请提供的一实施例，每个区域的所述磁铁片的宽度等于所述中枢件的宽度或是每个区域的所述磁铁片的长度等于所述中枢件的长度。
根据本申请提供的一实施例，所述磁铁片的形状为：圆形、椭圆形或是各种多边形。
根据本申请提供的一实施例，所述金属片的长、宽等于所述中框的长、宽，所述金属片具有一定的预设厚度。
根据本申请提供的一实施例，所述金属片的预设厚度范围为：0.1-0.3mm。
根据本申请提供的一实施例，所述中枢件为可弯折的铰链，所述中框的折叠区设置有凹槽，所述中枢件设置在所述中框的凹槽内，通过所述凹槽与所述金属片上的磁铁片进行对位。
根据本申请提供的一实施例，所述中枢件的材料选用具有磁性的金属。
根据本申请提供的一实施例，所述中枢件的厚度小于等于所述中框的厚度，所述中枢件的宽度等于所述凹槽的宽度。
 有益效果
与现有技术相比，本申请提供的一种OLED显示装置的有益效果为：
本申请提供的OLED显示装置，所述OLED显示装置包括：显示面板、金属片与中框；所述显示面板紧贴在所述金属片的一侧，分为折叠区和非折叠区；所述金属片设置在所述中框与所述显示面板之间；所述中框在所述金属片背离所述显示面板的一侧；所述中框的所述折叠区设置有中枢件，所述金属片的所述折叠区设置有磁铁片，所述磁铁片正对于所述中枢件进行设置；可以提高所述中框与所述显示面板的黏贴稳定性，使得所述OLED显示装置折叠时，所述显示面板与所述中框之间不易脱落。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的OLED显示装置的第一结构示意图。
图2为本申请实施例提供的金属片的第一结构示意图。
图3为本申请实施例提供的金属片的第二结构示意图。
图4为本申请实施例提供的金属片的第三结构示意图。
图5为本申请实施例提供的OLED显示装置的第二结构示意图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本申请的不同结构。为了简化本申请的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本申请。此外，本申请可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本申请提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
本申请提供一种OLED显示装置，具体参阅图1-图5。
现有的折叠终端，柔性显示屏的显示面板通过一种背胶与中框粘贴固定，而在显示屏的折叠区由于需要运动，一般在此区域内不使用背胶黏贴，即显示屏和折叠区之间是自由的真空状态，因此，在折叠和展开的过程中，该区域的显示屏与中框之间黏贴稳定性较低，易脱离，产生浮起、气泡等问题，影响外观且易导致异物侵入而影响显示质量。因此，本申请特提供一种OLED显示面板以解决上述问题。
参阅图1，为本申请实施例提供的一种OLED显示装置的第一结构示意图。所述OLED显示装置包括：显示面板1、金属片2与中框3；所述显示面板1紧贴在所述金属片2的一侧，分为折叠区21和非折叠区22；所述金属片2设置在所述中框3与所述显示面板1之间；所述中框3在所述金属片2背离所述显示面板1的一侧；所述中框3的所述折叠区31设置有中枢件，所述金属片2的所述折叠区21设置有磁铁片24，所述磁铁片24正对于所述中枢件进行设置。
进一步地，所述中框3与所述金属片2均为矩形，且与所述显示面板1的形状相同。所述磁铁片24贴在所述金属片2靠近所述中框3的一侧，所述磁铁片24贴在所述金属片2靠近所述中框2的一侧，每个区域呈间隔的点状排布，即等距阵列状或是不等距的阵列状。所述磁铁片24包含多种形状：圆形、椭圆形或是各种多边形等等。
进一步地，所述中框3的折叠区31设置有凹槽，所述凹槽内设置所述中枢件，所述中枢件为铰链，可进行一定角度的旋转，所述旋转角度大于等于180度，安装时，所述金属片2上的磁铁片24通过所述中框3上的凹槽与所述金属片2进行对位安装。
在本申请的一些实施例中，每个区域内的所述磁铁片24的宽度等于所述中枢件的宽度，即每个区域内的所述磁铁片24横向间隔排列，详见图2、3。在本申请的另一些实施例中，每个区域内的所述磁铁片24的长度等于所述中枢件的长度，即每个区域内的所述磁铁片24纵向间隔排列，详见图4。所述磁铁片24的区域数量大于等于2。
进一步地，所述金属片2的长、宽等于所述中框3的长、宽，所述金属片2具有一定的预设厚度，所述金属片2的预设厚度范围为：0.1-0.3mm。所述中枢件的材料选用具有磁性的金属，例如，具有光泽、有良好的导电性、导热性与机械性能的各种黑色金属：铁合金，铁，钴，镍；所述金属片选用抗拉伸的不锈钢材料。
进一步地，所述中枢件的厚度小于等于所述中框3的厚度，所述中枢件的宽度等于所述凹槽的宽度。所述中框3与所述金属片2之间采用黏性较强的工业用AB胶进行黏贴，所述AB胶AB胶是双组分胶粘剂的叫法，是两液混合硬化胶的别称，一种液体是本胶，一种液体是硬化剂，两种液体混合才能硬化，是不须靠温度来硬应熟成的，所以是常温硬化胶的一种，做模型有时会用到。A组分是丙烯酸改性环氧或环氧树脂，或含有催化剂及其他助剂，B组分是改性胺或其他硬化剂，或含有催化剂及其他助剂。按一定的比例进行混合，催化剂可以控制固化时间，其他助剂可以控制性能（如粘度、钢性、柔性、粘合性等等）。
进一步地，所述金属片2与显示面板1之间通过光学透明胶1c（OCA，Optically Clear Adhesive）进行黏贴，所述光学透明胶1c具有高透光性(全光穿透率>99%)、高黏着力、高耐候、耐水性、耐高温、抗紫外线，受控制的厚度，提供均匀的间距，长时间使用不会产生黄化 ( 黄变 )、剥离及变质的问题。
当所述OLED显示装置在进行弯折时，所述中框3的折叠区31（即中枢区）随着弯折角度和方向随之相应变化，由于所述折叠区31设置的是铰链，所述OLED显示装置在弯折时，所述中枢区的宽度大于折弯前所述中枢区的宽度；因此，当所述金属片2弯折时，所述磁铁片24为间隔的点状磁铁片24可以与所述中框3内的中枢件更贴合，黏贴稳定性会更高，无论所述金属片2与所述中框3折叠至什么角度，所述磁铁片24均可以与所述中枢件进行完美贴合。
进一步地，所述显示面板包括：
基板11，用于沉积各种不同的膜层，所述基板11可以为刚性基板，如玻璃基板或是石英基板；所述基板11也可以是柔性基板，优选柔性基板，如树脂基板，可以是聚酰亚胺基板、聚酰胺基板、聚碳酸酯基板、聚醚砜基板等有机物基板；
薄膜晶体管层12，设置在所述衬底基板11一侧，采用化学气相沉积法制得，所述薄膜晶体管层12内部包括：栅极层和源漏极层，所述薄膜晶体管可以是顶栅型薄膜晶体管或是底栅型薄膜晶体管；
OLED器件层13，设置在所述薄膜晶体管层12背离所述衬底基板11的一侧，所述OLED器件层13包括：阴极层，发光层，电子注入层，电子传输层，空穴注入层，空穴传输层以及阻挡层。其中，所述阴极层的材料采用低功函数的材料，一是可以提高电子注入的效率；二是可以降低OLED工作时产生的焦耳热，提高器件的寿命；在本申请实施例中，阳极层不设置在所述OLED器件层中，而是设置在所述平坦层背离所述OLED器件层的一侧；OLED器件层的发光原理为：通过阳极层和阴极层连接的电路，向阳极层和阴极层施加电压，利用阳极层注入空穴，阴极层注入电子，所形成的电子和空穴在发光材料层相遇而产生激子，从而激发发光材料层发光；
平坦层14，设置在所述OLED器件层13背离所述薄膜晶体管12的一侧，用于使所述OLED器件层13的表面平坦化；
像素定义层15，间隔设置在所述平坦层14背离所述OLED器件层13的一侧，一般采用半色调（half tone）光罩定义像素定义层的图形，即制作时，先在所述像素定义层15上涂布光阻层，将半色调光罩置于所述像素定义层上方，再采用黄光透过半色调光罩对所述像素定义层15表面的光阻层进行曝光、显影等处理，再利用曝光及显影处理的光阻层作为阻挡层，对所述像素定义层15进行蚀刻，黄光的曝光量影响着所述像素定义层15的厚度；
阳极层16，间隔设置在所述平坦层14背离所述OLED器件层13的一侧，所述像素定义层15之间的多个阳极层16，主要用于反光；所述阳极层16在所述平坦层14内形成有过孔，与所述OLED  器件层13电性导通，以完成发光；所述阳极层16，由于需要将空穴注入到OLED中，因此需要其具有较高的功函数，因此，所述阳极层16一般选用的材料为ITO，IZO，Au，Pt，Si等等；
发光层17，分为：红色发光层171、绿色发光层172和蓝色发光层173或是红色发光层171、绿色发光层172、蓝色发光层173以及白色发光层174（图中未示出），分别间隔设置在所述像素定义层15之间，各个所述阳极层16背离所述平坦层14的一侧；所述发光层17一般采用喷墨打印的方式进行制备；
薄膜封装层18，又分为：第一无机封装层、有机封装层和第二无机封装层，依次层叠设置在所述像素定义层15背离所述平坦层14的一侧，用于保护所述显示面板的内部膜层，避免外界水气、杂质的侵入影响所述显示面板的显示质量。
偏光片19，在本申请的一种实施例中，所述偏光片内均匀分布有偏光染料分子层，该偏光染料分子层可以为碘分子层。在实际制造该所述偏光片时，可以采用有机染料(例如碘)对聚乙烯醇(PVA，polyvinyl alcohol)膜进行分区间隔染色，然后将该染色后的PVA膜在一定的温度和湿度环境下按照预设方向拉伸，最后再经脱水、烘干等工艺后即可形成具有交替排列的透光区域和不透光区域的第二偏光层，其中，PVA膜上未染色的区域即为透光区域，染色区域即为偏光区域，该PVA膜拉伸时的预设方向即为该偏光区域的吸收轴方向；
触控功能层1a，设置在所述偏光片18与所述盖板1b之间；
以及盖板1b，所述盖板1b覆盖在所述触控功能层1a背离所述偏光片19的一侧，所述盖板1b为玻璃盖板；
进一步地，所述金属片2与所述显示面板1之间，所述显示面板1与所述偏光片18之间，所述偏光片18与所述触控功能层1a之间，所述触控功能层1a与所述盖板1b之间均通过所述光学透明胶（1c1、1c2、1c3）进行黏贴。
以上对本申请实施例所提供的一种OLED显示装置进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。

Claims (20)

  1. 一种OLED显示装置，所述OLED显示装置包括：显示面板、金属片与中框；
    所述显示面板紧贴在所述金属片的一侧，分为折叠区和非折叠区；
    所述金属片设置在所述中框与所述显示面板之间；
    所述中框在所述金属片背离所述显示面板的一侧；
    所述中框的所述折叠区设置有中枢件，所述金属片的所述折叠区设置有磁铁片，所述磁铁片正对于所述中枢件进行设置，且所述中框与所述金属片均为矩形。
  2. 根据权利要求1所述的OLED显示装置，其中，所述磁铁片贴在所述金属片靠近所述中框的一侧。
  3. 根据权利要求1所述的OLED显示装置，其中，所述磁铁片分多个区域设置在所述金属片上，每个区域呈间隔的点状排布。
  4. 根据权利要求3所述的OLED显示装置，其中，每个区域的所述磁铁片的宽度均等于所述中枢件的宽度或是每个区域的所述磁铁片的长度等于所述中枢件的长度。
  5. 根据权利要求4所述的OLED显示装置，其中，所述磁铁片的形状为：圆形、椭圆形或是各种多边形。
  6. 根据权利要求1所述的OLED显示装置，其中，所述金属片的长、宽等于所述中框的长、宽，所述金属片具有一定的预设厚度。
  7. 根据权利要求6所述的OLED显示装置，其中，所述金属片的预设厚度范围为：0.1-0.3mm。
  8. 根据权利要求1所述的OLED显示装置，其中，所述中枢件为可弯折的铰链，所述中框的折叠区设置有凹槽，所述中枢件设置在所述中框的凹槽内，通过所述凹槽与所述金属片上的磁铁片进行对位。
  9. 根据权利要求8所述的OLED显示装置，其中，所述中枢件的材料选用具有磁性的金属。
  10. 根据权利要求8所述的OLED显示装置，其中，所述中枢件的厚度小于等于所述中框的厚度，所述中枢件的宽度等于所述凹槽的宽度。
  11. 一种OLED显示装置，所述OLED显示装置包括：显示面板、金属片与中框；
    所述显示面板紧贴在所述金属片的一侧，分为折叠区和非折叠区；
    所述金属片设置在所述中框与所述显示面板之间；
    所述中框在所述金属片背离所述显示面板的一侧；
    所述中框的所述折叠区设置有中枢件，所述金属片的所述折叠区设置有磁铁片，所述磁铁片正对于所述中枢件进行设置。
  12. 根据权利要求11所述的OLED显示装置，其中，所述磁铁片贴在所述金属片靠近所述中框的一侧。
  13. 根据权利要求11所述的OLED显示装置，其中，所述磁铁片分多个区域设置在所述金属片上，每个区域呈间隔的点状排布。
  14. 根据权利要求13所述的OLED显示装置，其中，每个区域的所述磁铁片的宽度均等于所述中枢件的宽度或是每个区域的所述磁铁片的长度等于所述中枢件的长度。
  15. 根据权利要求14所述的OLED显示装置，其中，所述磁铁片的形状为：圆形、椭圆形或是各种多边形。
  16. 根据权利要求11所述的OLED显示装置，其中，所述金属片的长、宽等于所述中框的长、宽，所述金属片具有一定的预设厚度。
  17. 根据权利要求16所述的OLED显示装置，其中，所述金属片的预设厚度范围为：0.1-0.3mm。
  18. 根据权利要求11所述的OLED显示装置，其中，所述中枢件为可弯折的铰链，所述中框的折叠区设置有凹槽，所述中枢件设置在所述中框的凹槽内，通过所述凹槽与所述金属片上的磁铁片进行对位。
  19. 根据权利要求18所述的OLED显示装置，其中，所述中枢件的材料选用具有磁性的金属。
  20. 根据权利要求18所述的OLED显示装置，其中，所述中枢件的厚度小于等于所述中框的厚度，所述中枢件的宽度等于所述凹槽的宽度。
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