WO2021217809A1 - Oled 显示屏及其制备方法 - Google Patents

Oled 显示屏及其制备方法 Download PDF

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Publication number
WO2021217809A1
WO2021217809A1 PCT/CN2020/096145 CN2020096145W WO2021217809A1 WO 2021217809 A1 WO2021217809 A1 WO 2021217809A1 CN 2020096145 W CN2020096145 W CN 2020096145W WO 2021217809 A1 WO2021217809 A1 WO 2021217809A1
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WIPO (PCT)
Prior art keywords
back plate
fixing member
display screen
flexible display
backplane
Prior art date
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Ceased
Application number
PCT/CN2020/096145
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English (en)
French (fr)
Inventor
朱志涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to US17/054,702 priority Critical patent/US11877497B2/en
Publication of WO2021217809A1 publication Critical patent/WO2021217809A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • 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
    • H10K59/1201—Manufacture or treatment
    • 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
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/871—Self-supporting sealing arrangements
    • H10K59/8722—Peripheral sealing arrangements, e.g. adhesives, sealants
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/30—Coordination compounds
    • H10K85/321—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3]
    • H10K85/324—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3] comprising aluminium, e.g. Alq3

Definitions

  • This application relates to the field of display technology, in particular to an OLED display screen and a preparation method thereof.
  • the pad bending (panel bending) technology of the display is made into a large R arc with a radius of 0.3 ⁇ 0.5mm, which can effectively increase the screen-to-body ratio of the display.
  • the pad bending area relies on MLC dispensing to protect itself.
  • the thickness of the glue in the pad bending area is generally 50 ⁇ 80 ⁇ m, but there will be uneven thickness after the liquid glue is cured, resulting in a gap (Gap) between the glue and the film (Film) layer, which makes it bend Various display defects appeared on the rear display panel.
  • the thickness of the glue is uneven, it is easy to affect the Pad The shape of bending. For example, when the glue in the bending zone is too thick, the glue and other parts in the bending zone will interfere, and even cause wave warping in the bending zone.
  • TP FPC Touch Panel Flexible Print Circuit, touch printed circuit board
  • the circuit of the array substrate is not completely fixed, and it is prone to pull, which leads to damage to the circuit of the array substrate.
  • the purpose of the present invention is to provide an OLED display screen and a preparation method thereof, so as to solve the problem that the thickness of the colloid is uneven after the glue of the existing OLED display panel is dispensed, which affects the shape of the pad bending, and is prone to interference and wave warping.
  • the circuit of the array substrate is prone to technical problems of disconnection.
  • the present invention provides an OLED display screen, which includes a first backplane, a fixing member, a second backplane, and a flexible display assembly;
  • the fixing member is fixed to the edge of a surface of the first backplane Side;
  • the second back plate is fixed to the side of the fixing member away from the first back plate;
  • the flexible display assembly extends from the side of the first back plate away from the fixing member and is bent to the A side of the second back plate away from the fixing member, and there is a gap without filler between the flexible display assembly and the fixing member.
  • the flexible display assembly includes a display panel and a touch panel
  • the display panel is disposed on the first back plate, and is bent and extends to the lower surface of the second back plate;
  • the touch panel Is arranged on the side surface of the display panel away from the second back plate; on the side of the fixing member away from the first back plate, the touch panel partially covers the display panel so that the The sides of the display panel are exposed.
  • the thickness of the touch panel is 25 ⁇ m-60 ⁇ m.
  • the OLED display screen further includes a polarizer arranged on the flexible display component; wherein the length of the polarizer is less than the length of the flexible display component.
  • the touch panel includes a capacitor area, which is covered by the polarizer, and a driving signal line area, which is bent and extends below the second back plate.
  • the OLED display screen further includes: an optical adhesive layer, which is provided on a side surface of the polarizer away from the second back plate; and a cover plate, which covers the optical adhesive layer away from the second back plate; One side surface of the backplane.
  • edges of the second back plate and the fixing member are aligned with each other.
  • the present invention also provides a method for preparing an OLED display screen, which includes the following steps:
  • the flexible display assembly is bent, the flexible display assembly extends from the upper surface of the first backplane and is bent to the lower surface of the second backplane, the flexible display assembly and the fixing member There are gaps without fillers.
  • the step of arranging the flexible display assembly includes: arranging a display panel on the upper surface of the first backplane; and arranging a touch panel on the upper surface of the display panel; wherein, under the fixing member On the surface, the touch panel partially covers the display panel, so that the sides of the display panel are exposed.
  • the method further includes: attaching a polarizer to the upper surface of the flexible display assembly; forming an optical adhesive layer on the upper surface of the polarizer; and attaching a cover The board is on the upper surface of the optical adhesive layer.
  • the present application provides an OLED display screen and a preparation method thereof, which eliminates the existing MLC dispensing process, and utilizes the flexibility and ductility of the touch panel to extend the length of the touch panel to make it Bending from the upper surface of the first back plate and extending to the lower surface of the second back plate can effectively avoid the interference of the glue with other parts in the bending area and the wave warping in the bending area, thereby improving the OLED display Screen quality.
  • a polarizer is arranged on the touch panel, and the polarizer only covers the capacitive area of the touch panel, thereby avoiding the influence of the capacitance value of the touch panel after bending, so as to improve the yield of the OLED display.
  • FIG. 1 is a schematic diagram of the structure of the OLED display screen according to this embodiment.
  • FIG. 2 is a plan view of the OLED display screen according to this embodiment.
  • FIG. 3 is a flowchart of the OLED display screen according to this embodiment.
  • FIG. 4 is a schematic diagram of the structure of the flexible display assembly before bending according to this embodiment.
  • FIG. 5 is a schematic diagram of the structure of the flexible display assembly according to this embodiment after being bent.
  • 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 "on" or “under” 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 embodiment provides an OLED display screen, which includes a first back plate 1, a fixing member 2, a second back plate 3, a flexible display assembly 4, a polarizer 5, an optical adhesive layer 6 and a cover plate 7. .
  • the fixing member 2 is fixed on the side of the upper surface of the first back plate 1.
  • the second back plate 3 is fixed to the lower surface of the fixing member 2 and aligned with the edge of the fixing member 2.
  • the PET material with unique glue on both sides of the fixing member 2 supports the first back plate 1 and the second back plate 3, thereby fixing the entire OLED display screen.
  • the flexible display assembly 4 extends from the upper surface of the first back plate 1 and is bent to the lower surface of the second back plate 3 so that the flexible display assembly 4 is bent to form a bending area 100. Wherein, there is a gap without filler between the flexible display assembly 4 and the fixing member 2.
  • the flexible display assembly 4 includes a display panel 41 and a touch panel 42.
  • the touch panel 42 is provided on the upper surface of the display panel 41, and the touch panel 42 does not completely cover the display panel 41.
  • the display panel 41 is disposed on the first back plate 1 and is bent and extends to the lower surface of the second back plate 3 to form a first bent portion 101.
  • the touch panel 42 has good flexibility and ductility.
  • the touch panel 42 is disposed on a side surface of the display panel 41 away from the second backplane, and is bent and extends below the fixing member 2 along with the display panel 41.
  • the touch panel 42 partially covers the display panel 41, so that the side of the display panel 41 is exposed.
  • the thickness of the touch panel 42 is 25 ⁇ m-60 ⁇ m, preferably 44 ⁇ m, 48 ⁇ m, 50 ⁇ m, 52 ⁇ m, 56 ⁇ m, so as to avoid excessive stress after the touch panel 42 is bent and affect the bending effect.
  • this implementation removes the MLC dispensing process and uses the flexibility and ductility of the touch panel to extend the length of the touch panel so that it is bent from the upper surface of the first back plate and extends to The lower surface of the second backplane effectively avoids problems such as interference between the glue and other components in the bending area and wave warping in the bending area, thereby improving the quality of the OLED display.
  • the polarizer 5 is arranged on the flexible display assembly 4. Wherein, the length of the polarizer 5 is less than the length of the flexible display assembly 4.
  • the OLED display screen also includes a touch-sensitive printed circuit board 43 (Touch Panel Flexible Printed Circuit, TP FPC), display printed circuit board 44 (Panel FPC).
  • TP FPC Touch Panel Flexible Printed Circuit
  • display printed circuit board 44 Panel FPC
  • the touch panel 42 forms a loop with the touch printed circuit board 43 and the display printed circuit board 44 to realize electrical connection, so that the OLED display screen can realize functions such as display and touch control.
  • the touch panel 42 includes a capacitor area 421 and a driving signal circuit area 422.
  • the polarizer covers the capacitance area 421 of the touch panel 42 to prevent the touch panel 42 from being bent and affect the capacitance value of the touch panel 42, to ensure the touch sensitivity of the touch panel 42, thereby improving the OLED The yield of the display.
  • the driving signal circuit area 422 is bent and extends below the second back plate.
  • the OLED display screen further includes a chip on film 45, and an IC module 451 is provided on the chip on film (COF) 45.
  • the IC module 451 is mostly used as a source driver and a gate driver for display driving.
  • one end of the chip on film 45 is connected to the display printed circuit board 44, which is responsible for receiving the data signal transmitted from the display printed circuit board 44, and the other end of the COF is connected to the display panel 41 (Panel) for the data output by the IC
  • the signal is transmitted to the display panel to drive the display panel for display.
  • the OLED display screen further includes an optical adhesive layer 6 and a cover plate 7.
  • the optical adhesive layer is arranged between the polarizer 5 and the cover plate 7 for the polarizer 5 and the cover plate 7.
  • This embodiment provides an OLED display screen, which removes the existing MLC dispensing process, and uses the flexibility and ductility of the touch panel to extend the length of the touch panel so that it is bent from the upper surface of the first backplane It extends to the lower surface of the second back plate, which can effectively avoid problems such as interference between the glue and other parts in the bending area and wave warping in the bending area, thereby improving the quality of the OLED display.
  • a polarizer is arranged on the touch panel, and the polarizer only covers the capacitive area of the touch panel, thereby avoiding the influence of the capacitance value of the touch panel after bending, so as to improve the yield of the OLED display.
  • this embodiment also provides a method for manufacturing an OLED display screen, which includes the following steps S1)-S7).
  • S1 Provide a first backplane and a second backplane.
  • the flexible display assembly 4 includes a display panel 41 and a touch panel 42.
  • the touch panel 42 is provided on the upper surface of the display panel 41, and the touch panel 42 does not completely cover the display panel 41.
  • the upper surface of the display panel 41 that is not covered by the touch panel 42 is connected to the chip on film 45, and an IC module 451 is provided on the chip on film 45.
  • one end of the chip on film 45 is connected to the display printed circuit board 44, which is responsible for receiving the data signal transmitted from the display printed circuit board 44, and the other end of the COF is connected to the display panel 41 (Panel) for connecting the IC
  • the output data signal is transmitted to the display panel to drive the display panel for display.
  • the flexible display assembly 4 extends from the upper surface of the first back plate 1 and is bent to the lower surface of the second back plate 3, so that the flexible display assembly 4 is bent to form a bending area 100. Wherein, there is a gap without filler between the flexible display assembly 4 and the fixing member 2.
  • the display panel 41 is disposed on the first back plate 1 and is bent and extends to the lower surface of the second back plate 3 to form the first bent portion 101.
  • the display panel 41 is fixed to the lower surface of the fixing member 2 and aligned with the edges of the fixing member 2.
  • the touch panel 42 has good flexibility and ductility.
  • the touch panel 42 is disposed on a side surface of the display panel 41 away from the second backplane, and is bent and extends below the fixing member 2 along with the display panel 41.
  • the touch panel 42 partially covers the display panel 41, so that the side of the display panel 41 is exposed.
  • the thickness of the touch panel 42 is 25 ⁇ m-60 ⁇ m, preferably 44 ⁇ m, 48 ⁇ m, 50 ⁇ m, 50 ⁇ m, 56 ⁇ m, so as to avoid excessive stress after the touch panel 42 is bent and affect the bending effect.
  • the PET material with unique glue on both sides of the stiffener supports the back plate and the second back plate, thereby fixing the entire OLED display screen.
  • this implementation removes the MLC dispensing process and uses the flexibility and ductility of the touch panel to extend the length of the touch panel so that it is bent from the upper surface of the first back plate and extends to The lower surface of the second backplane effectively avoids problems such as interference between the glue and other components in the bending area and wave warping in the bending area, thereby improving the quality of the OLED display.
  • the polarizer 5 is set on the flexible display assembly 4, refer to FIG. 5. Wherein, the length of the polarizer 5 is less than the length of the flexible display assembly 4.
  • An optical adhesive layer 6 is formed on the upper surface of the polarizer 5, referring to FIG. 5.
  • This embodiment provides an OLED display screen, which removes the existing MLC dispensing process, and uses the flexibility and ductility of the touch panel to extend the length of the touch panel so that it is bent from the upper surface of the first backplane It extends to the lower surface of the second back plate, which can effectively avoid problems such as interference between the glue and other parts in the bending area and wave warping in the bending area, thereby improving the quality of the OLED display.
  • a polarizer is arranged on the touch panel, and the polarizer only covers the capacitive area of the touch panel, thereby avoiding the influence of the capacitance value of the touch panel after bending, so as to improve the yield of the OLED display.

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Abstract

公开一种OLED显示屏及其制备方法，所述OLED显示屏包括第一背板；固定件，固定于所述第一背板的一表面的边侧；第二背板，固定于所述固定件远离所述第一背板的一面；以及柔性显示组件，从所述第一背板远离所述固定件的一面延伸并弯折至所述第二背板远离所述固定件的一面，所述柔性显示组件与所述固定件之间存在无填充物的间隙。

Description

OLED显示屏及其制备方法 技术领域
本申请涉及显示技术领域，尤其涉及一种OLED显示屏及其制备方法。
 背景技术
随着OLED技术在显示面板行业的广泛应用，OLED产品的最大优势在于其柔性的可折叠特性。
目前，显示屏的pad bending（面板弯折）技术都是做成一个大的R弧形，有0.3~0.5mm半径，可以有效增大显示器的屏占比。
显示面板经过LLO(Laser Lift Off, 激光剥离)后，pad bending区域依赖MLC点胶对其自身进行保护处理。一般地，Pad bending区域的点胶厚度普遍在50~80μm，但是液态胶固化后会存在厚度不均的情况，导致该胶体与薄膜（Film）层间有间隙（Gap），从而使得被弯折后的显示面板出现各种显示类不良。具体地，当点胶厚度不均时，容易影响Pad bending的形状。例如，当弯折区的胶体过厚时，胶体和弯折区的其他部件发生干涉，甚至会导致弯折区产生波浪翘曲问题。
点胶制程是在整个pad bending区域的，TP FPC（Touch Panel Flexible Print Circuit，触控印刷电路板）位置是要跨过点胶区的，此位置会由于点胶平坦度问题，而触控面板导致表面不平整；——点胶不平整影响客户对DF产品（全柔动态弯折产品）的视觉体验，影响显示屏的品质问题。
另外，在运输过程中，由于弯折区的胶体厚度不均，阵列基板的线路未被完全固定，容易发生拉扯，从而导致阵列基板的线路损伤。
 技术问题
本发明的目的在于，提供一种OLED显示屏及其制备方法，以解决现有OLED显示面板的点胶后，导致胶体的厚度不均匀，影响Pad bending的形状，容易产生干涉、波浪翘曲，阵列基板的线路容易发生断线的技术问题。
 技术解决方案
为了实现上述目的，本发明提供一种OLED显示屏，包括第一背板、固定件、第二背板、以及柔性显示组件；所述固定件固定于所述第一背板的一表面的边侧；所述第二背板固定于所述固定件远离所述第一背板的一面；所述柔性显示组件从所述第一背板远离所述固定件的一面延伸并弯折至所述第二背板远离所述固定件的一面，所述柔性显示组件与所述固定件之间存在无填充物的间隙。
进一步地，所述柔性显示组件包括显示面板以及触控面板，所述显示面板设于所述第一背板，且被弯折并延伸至所述第二背板下表面；所述触控面板设于所述显示面板远离所述第二背板的一侧表面；在所述固定件远离所述第一背板的一侧，所述触控面板部分覆盖所述显示面板，以使所述显示面板的边侧裸露。
进一步地，所述触控面板的厚度为25μm~60μm。
进一步地，所述的OLED显示屏还包括偏光片，设于所述柔性显示组件上；其中，所述偏光片的长度小于所述柔性显示组件的长度。
进一步地，所述触控面板包括电容区，被所述偏光片覆盖；以及驱动讯号线路区，被弯折延伸至所述第二背板下方。
进一步地，所述的OLED显示屏还包括：光学胶层，设于所述偏光片远离所述第二背板的一侧表面；以及盖板，覆于所述光学胶层远离所述第二背板的一侧表面。
进一步地，所述第二背板与所述固定件的边缘彼此对齐。
为了实现上述目的，本发明还提供一种OLED显示屏的制备方法，包括如下步骤：
提供第一背板及第二背板；
安装所述第一背板于一固定件的上表面，所述固定件固定于所述第一背板的一表面的边侧；
设置一柔性显示组件于所述第一背板及所述第二背板的上表面；以及
对所述柔性显示组件进行弯折处理，所述柔性显示组件从所述第一背板上表面延伸并弯折至所述第二背板的下表面，所述柔性显示组件与所述固定件之间存在无填充物的间隙。
进一步地，在所述柔性显示组件设置步骤中，包括：在所述第一背板上表面设置显示面板；以及在所述显示面板上表面设置触控面板；其中，在所述固定件的下表面，所述触控面板部分覆盖所述显示面板，以使所述显示面板的边侧裸露。
进一步地，在所述柔性显示组件进行弯折处理步骤之后，还包括：贴附一偏光片于所述柔性显示组件上表面；形成一光学胶层于所述偏光片上表面；以及贴附一盖板于所述光学胶层上表面。
 有益效果
相较于现有技术，本申请提供一种OLED显示屏及其制备方法，去除了现有MLC点胶工艺，利用触控面板的柔性及延展性，延长所述触控面板的长度，使其从第一背板的上表面弯折并延伸至第二背板的下表面，可以有效地避免了胶体与弯折区其他部件发生干涉以及弯折区发生波浪翘曲等问题，从而提升OLED显示屏品质。
进一步地，在触控面板上设置偏光片，并使得该偏光片仅覆盖触控面板的电容区，从而避免了触控面板弯折后影响其的电容值，以提升OLED显示屏的良率。
 附图说明
下面结合附图，通过对本申请的具体实施方式详细描述，将使本申请的技术方案及其它有益效果显而易见。
图1为本实施例所述OLED显示屏的结构示意图。
图2为本实施例所述OLED显示屏的平面图。
图3为本实施例所述OLED显示屏的流程图。
图4为本实施例所述柔性显示组件弯折前的结构示意图。
图5为本实施例所述柔性显示组件弯折后的结构示意图。
附图部分标识如下：
1第一背板；2固定件；
3第二背板；4柔性显示组件；
5偏光片；6光学胶层；7盖板；
41显示面板；42触控面板；43触控印刷电路板；
44显示印刷电路板；45覆晶薄膜；451IC模块；
421电容区；422驱动讯号线路区；
100弯折区；101第一弯折部；102第二弯折部。
 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。
如图1所示，本实施例提供一种OLED显示屏，包括第一背板1、固定件2、第二背板3、柔性显示组件4、偏光片5、光学胶层6以及盖板7。
固定件2，固定于第一背板1的上表面的边侧。第二背板3，固定于固定件2的下表面，且与固定件2的边缘彼此对齐。
本实施例中，固定件2（stiffener）的两面独有胶的PET材料，对第一背板1及第二背板3起到支撑作用，从而对整个OLED显示屏起固定作用。
柔性显示组件4，从第一背板1的上表面延伸并弯折至第二背板3的下表面，使得柔性显示组件4被弯折形成一弯折区100。其中，柔性显示组件4与固定件2之间存在无填充物的间隙。
具体地，柔性显示组件4包括显示面板41以及触控面板42，触控面板42设于显示面板41的上表面，触控面板42未完全覆盖显示面板41。
显示面板41设于第一背板1，且被弯折并延伸至第二背板3的下表面，形成第一弯折部101。
触控面板42，具有良好的柔性和延展性。触控面板42设于显示面板41远离所述第二背板的一侧表面，并随着显示面板41弯折延伸至固定件2的下方。在固定件2远离第一背板1的一侧，触控面板42部分覆盖显示面板41，以使显示面板41的边侧裸露。触控面板42的厚度为25μm~60μm，优选为44μm、48μm、50μm、52μm、56μm，以避免触控面板42弯折后应力过大，影响弯折效果。
与现有技术相比，本实施去除了MLC点胶工艺，利用触控面板的柔性及延展性，延长所述触控面板的长度，使其从第一背板的上表面弯折并延伸至第二背板的下表面，有效地避免了胶体与弯折区其他部件发生干涉以及弯折区发生波浪翘曲等问题，从而提升OLED显示屏品质。
偏光片5，设于柔性显示组件4上。其中，偏光片5的长度小于柔性显示组件4的长度。
如图2所示，所述OLED显示屏还包括触控印刷电路板43（Touch Panel Flexible Printed Circuit，TP FPC）、显示印刷电路板44（Panel FPC）。其中，触控面板42与触控印刷电路板43、显示印刷电路板44形成一回路，实现电连接，从而使得OLED显示屏实现显示、触控等功能。
触控面板42包括电容区421以及驱动讯号线路区422。具体地，所述偏光片覆盖触控面板42的电容区421，以避免触控面板42因弯折后，影响触控面板42的电容值，确保触控面板42的触控灵敏度，从而提升OLED显示屏的良率。驱动讯号线路区422，被弯折延伸至所述第二背板下方。
如图1所示，所述OLED显示屏还包括覆晶薄膜45，在覆晶薄膜45(Chip On Film，COF) 设有一IC模块451。IC模块451多用作显示驱动的源极驱动(Source Driver)和栅极驱动(Gate Driver)。在驱动电路中，覆晶薄膜45一端连接到显示印刷电路板44，负责接收显示印刷电路板44传输过来的数据信号，COF的另一端连接显示面板41 (Panel)，用于将IC输出的数据信号传输到显示面板上，以驱动显示面板进行显示。
本实施例中，所述OLED显示屏还包括光学胶层6及盖板7。其中，光学胶层设于偏光片5及盖板7之间，用以偏光片5及盖板7。
本实施例提供一种OLED显示屏，去除了现有MLC点胶工艺，利用触控面板的柔性及延展性，延长所述触控面板的长度，使其从第一背板的上表面弯折并延伸至第二背板的下表面，可以有效地避免了胶体与弯折区其他部件发生干涉以及弯折区发生波浪翘曲等问题，从而提升OLED显示屏品质。
进一步地，在触控面板上设置偏光片，并使得该偏光片仅覆盖触控面板的电容区，从而避免了触控面板弯折后影响其的电容值，以提升OLED显示屏的良率。
如图3所示，本实施例还提供一种OLED显示屏的制备方法，包括如下步骤S1）-S7）。
S1）提供第一背板及第二背板。
S2）安装所述第一背板于一固定件的上表面，所述固定件固定于所述第一背板的一表面的边侧。
S3）设置一柔性显示组件于所述第一背板及所述第二背板的上表面。
如图4所示，柔性显示组件4包括显示面板41以及触控面板42，触控面板42设于显示面板41的上表面，触控面板42未完全覆盖显示面板41。其中，未被触控面板42覆盖的显示面板41的上表面连接至覆晶薄膜45，在覆晶薄膜45上设有一IC模块451。具体地，在驱动电路中，覆晶薄膜45一端连接到显示印刷电路板44，负责接收显示印刷电路板44传输过来的数据信号，COF的另一端连接显示面板41 (Panel)，用于将IC输出的数据信号传输到显示面板上，以驱动显示面板进行显示。
S4）对所述柔性显示组件进行弯折处理，所述柔性显示组件从所述第一背板上表面延伸并弯折至所述第二背板的下表面，所述柔性显示组件与所述固定件之间存在无填充物的间隙，所述第二背板与所述固定件的边缘彼此对齐。
如图5所示，柔性显示组件4从第一背板1的上表面延伸并弯折至第二背板3的下表面，使得柔性显示组件4被弯折形成一弯折区100。其中，柔性显示组件4与固定件2之间存在无填充物的间隙。
具体地，显示面板41设于第一背板1，且被弯折并延伸至第二背板3的下表面，形成第一弯折部101。显示面板41设固定于固定件2的下表面，且与固定件2的边缘彼此对齐。
触控面板42，具有良好的柔性和延展性。触控面板42设于显示面板41远离所述第二背板的一侧表面，并随着显示面板41弯折延伸至固定件2的下方。在固定件2远离第一背板1的一侧，触控面板42部分覆盖显示面板41，以使显示面板41的边侧裸露。触控面板42的厚度为25μm~60μm，优选为44μm、48μm、50μm、50μm、56μm，以避免触控面板42弯折后应力过大，影响弯折效果。
本实施例中，所述固定件（stiffener）的两面独有胶的PET材料，对所述背板及所述第二背板起到支撑作用，从而对整个OLED显示屏起固定作用。
与现有技术相比，本实施去除了MLC点胶工艺，利用触控面板的柔性及延展性，延长所述触控面板的长度，使其从第一背板的上表面弯折并延伸至第二背板的下表面，有效地避免了胶体与弯折区其他部件发生干涉以及弯折区发生波浪翘曲等问题，从而提升OLED显示屏品质。
S5）贴附一偏光片于所述柔性显示组件上表面。
偏光片5，设于柔性显示组件4上，参照图5。其中，偏光片5的长度小于柔性显示组件4的长度。
S6）形成一光学胶层6于偏光片5上表面，参照图5。
S7）贴附一盖板7于光学胶层6上表面。所述光学胶层用以粘合所述偏光片及所述盖板。
本实施例提供一种OLED显示屏，去除了现有MLC点胶工艺，利用触控面板的柔性及延展性，延长所述触控面板的长度，使其从第一背板的上表面弯折并延伸至第二背板的下表面，可以有效地避免了胶体与弯折区其他部件发生干涉以及弯折区发生波浪翘曲等问题，从而提升OLED显示屏品质。
进一步地，在触控面板上设置偏光片，并使得该偏光片仅覆盖触控面板的电容区，从而避免了触控面板弯折后影响其的电容值，以提升OLED显示屏的良率。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
以上对本申请实施例所提供的一种OLED显示屏及其制备方法进行了详细介绍，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 (10)

  1. 一种OLED显示屏，其包括：
    第一背板；
    固定件，固定于所述第一背板的一表面的边侧；
    第二背板，固定于所述固定件远离所述第一背板的一面；以及
    柔性显示组件，从所述第一背板远离所述固定件的一面延伸并弯折至所述第二背板远离所述固定件的一面，所述柔性显示组件与所述固定件之间存在无填充物的间隙。
  2. 根据权利要求1所述的OLED显示屏，其中，
    所述柔性显示组件包括：
    显示面板，设于所述第一背板，且被弯折并延伸至所述第二背板下表面；以及
    触控面板，设于所述显示面板远离所述第二背板的一侧表面；
    在所述固定件远离所述第一背板的一侧，所述触控面板部分覆盖所述显示面板，以使所述显示面板的边侧裸露。
  3. 根据权利要求2所述的OLED显示屏，其中，
    所述触控面板的厚度为25μm~60μm。
  4. 根据权利要求1所述的OLED显示屏，其中，还包括：
    偏光片，设于所述柔性显示组件上；
    其中，所述偏光片的长度小于所述柔性显示组件的长度。
  5. 根据权利要求4所述的OLED显示屏，其中，
    所述触控面板包括：
    电容区，被所述偏光片覆盖；以及
    驱动讯号线路区，被弯折延伸至所述第二背板下方。
  6. 根据权利要求4所述的OLED显示屏，其中，还包括：
    光学胶层，设于所述偏光片远离所述第二背板的一侧表面；以及
    盖板，覆于所述光学胶层远离所述第二背板的一侧表面。
  7. 根据权利要求1所述的OLED显示屏，其中，
    所述第二背板与所述固定件的边缘彼此对齐。
  8. 一种OLED显示屏的制备方法，其中，包括如下步骤：
    提供第一背板及第二背板；
    安装所述第一背板于一固定件的上表面，所述固定件固定于所述第一背板的一表面的边侧；
    设置一柔性显示组件于所述第一背板及所述第二背板的上表面；以及
    对所述柔性显示组件进行弯折处理，所述柔性显示组件从所述第一背板上表面延伸并弯折至所述第二背板的下表面，所述柔性显示组件与所述固定件之间存在无填充物的间隙。
  9. 根据权利要求8所述的OLED显示屏的制备方法，其中，
    在所述柔性显示组件进行弯折处理步骤中，所述第二背板与所述固定件的边缘彼此对齐；
    在所述固定件的下表面，所述触控面板部分覆盖所述显示面板，以使所述显示面板的边侧裸露。
  10. 根据权利要求8所述的OLED显示屏的制备方法，其中，
    在所述柔性显示组件进行弯折处理步骤之后，还包括：
    贴附一偏光片于所述柔性显示组件上表面；
    形成一光学胶层于所述偏光片上表面；以及
    贴附一盖板于所述光学胶层上表面。
PCT/CN2020/096145 2020-04-26 2020-06-15 Oled 显示屏及其制备方法 Ceased WO2021217809A1 (zh)

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