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WO2021036296A1 - 显示装置及其制造方法 - Google Patents

显示装置及其制造方法 Download PDF

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Publication number
WO2021036296A1
WO2021036296A1 PCT/CN2020/085968 CN2020085968W WO2021036296A1 WO 2021036296 A1 WO2021036296 A1 WO 2021036296A1 CN 2020085968 W CN2020085968 W CN 2020085968W WO 2021036296 A1 WO2021036296 A1 WO 2021036296A1
Authority
WO
WIPO (PCT)
Prior art keywords
bending portion
bending
display device
back plate
curve
Prior art date
Application number
PCT/CN2020/085968
Other languages
English (en)
French (fr)
Inventor
祝翠林
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 US16/760,987 priority Critical patent/US11335217B2/en
Publication of WO2021036296A1 publication Critical patent/WO2021036296A1/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
    • 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
    • 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
    • H10K50/87—Arrangements for heating or cooling
    • 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
    • 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
    • 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
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Definitions

  • the present invention relates to the field of display technology, in particular to a display device and a manufacturing method thereof.
  • driver chip driver The IC
  • the bending design of the existing display product 2000 adopts a symmetrical bending of the center line of the bending portion 110, that is, the display product 2000 is bent 180 degrees.
  • Such a design can well balance the stress borne by the conductive circuit 150 that is bent in the bending area.
  • this design also limits the width W of the frame. For display products that are developing toward a narrow frame (especially a narrow lower frame), such a symmetrical bending design can no longer make the frame have a narrower width.
  • the purpose of the present invention is to provide a display device and a manufacturing method thereof to solve the technical problem that the frame width of the display device cannot be further reduced in the prior art.
  • the present invention provides a display device.
  • the display device includes a display panel.
  • the display panel includes a bending portion, a first non-bending portion and a second non-bending portion.
  • the first non-bending portion and the second non-bending portion are respectively arranged on two opposite sides of the bending portion.
  • the second non-bending portion is arranged on the back side of the first non-bending portion by bending the bending portion asymmetrically and at a non-180 degree angle.
  • the asymmetric and non-180 degree angle bending method is to bend the second non-bending part along a curve to the first non-bending
  • the curve is a line segment defined in the cross-sectional view of the top surface of the bending portion, and the curve extends from the first non-bending portion to the second non-bending portion
  • the direction of has a bending radius of R1, R2, R3 to Rn in sequence, where n ⁇ 2, and R1 ⁇ R2 ⁇ R3 ⁇ ... ⁇ Rn.
  • the display device further includes a first back plate, a second back plate, a heat dissipation material, and a reinforcing material.
  • the first back plate is fixed to the bottom surface of the first non-bending portion.
  • the second back plate is fixed to the bottom surface of the second non-bending portion.
  • the heat dissipation material is fixed on the bottom surface of the first back plate.
  • the reinforcing material is sandwiched between the heat dissipation material and the second back plate.
  • the material of the heat dissipation material is a composite material of copper/graphite/foam.
  • the reinforcing material is made of polyethylene terephthalate or cycloolefin polymer.
  • the display device further includes a filler that contacts the first back plate, the heat dissipation material, and the reinforcing material, and the filler protrudes from The edge of the first back plate abuts against the bending part.
  • the filler is rubber, silica gel, ultraviolet curing resin, or metal.
  • the present invention also provides a method of manufacturing a display device.
  • the method includes providing a display panel, the display panel including a bending portion, a first non-bending portion and a second non-bending portion, the first non-bending portion and the second non-bending portion
  • the folding parts are respectively arranged on two opposite sides of the folding part.
  • the method further includes bending the second non-bending portion to the back side of the first non-bending portion by bending the bending portion asymmetrically and at a non-180 degree angle.
  • the asymmetric and non-180 degree angle bending method is to bend the second non-bending part along a curve to the first
  • the curve is a line segment defined by the cross-sectional view of the top surface of the bending portion, and the curve extends from the first non-bending portion to the second non-bending portion.
  • the direction of the bent portion has a bending radius of R1, R2, R3 to Rn in sequence, where n ⁇ 2, and R1 ⁇ R2 ⁇ R3 ⁇ ... ⁇ Rn.
  • the method further includes filling a filler under the first non-bending portion, the filler protruding from the first non-bending portion edge.
  • the present invention provides a display device and a manufacturing method thereof.
  • the display device can have a narrow frame width, so as to solve the technical problem that the frame width of the existing display device cannot be further reduced.
  • FIG. 1 is a schematic diagram of a bending design of a display panel in the prior art.
  • Fig. 2 is a cross-sectional side view of a display device according to an embodiment of the present invention.
  • Fig. 3 is an enlarged view of area A in Fig. 2.
  • FIG. 4A is a schematic structural diagram of the display device according to an embodiment of the present invention after a symmetrical and 180-degree bending.
  • 4B is a schematic structural diagram of the display device according to an embodiment of the present invention after being bent asymmetrically and at a non-180 degree angle.
  • FIG. 5 shows a flowchart of a method of manufacturing a display device according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional side view of a display device according to an embodiment of the present invention
  • FIG. 3 is an enlarged view of area A in FIG. 2.
  • the display device 1000 of the present invention includes a display panel 100.
  • the display panel 100 includes a bending portion 110, a first non-bending portion 120 and a second non-bending portion 130.
  • the first non-bending portion 120 and the second non-bending portion 130 are respectively disposed on two opposite sides of the bending portion 110.
  • the second non-bending portion 130 is arranged on the back side of the first non-bending portion 120 by bending the bending portion 110 at an asymmetric and non-180 degree angle a.
  • the display panel 100 Since the display panel 100 is bent, the display panel 100 must be flexible.
  • the display panel 100 is a flexible organic light emitting diode (organic light emitting diode (OLED) display panel, but the invention is not limited to this.
  • OLED organic light emitting diode
  • the first non-bending portion 120 refers to the display area of the display panel 100
  • the second non-bending portion 130 refers to the peripheral area of the display panel 100.
  • a driver IC (driver IC) is provided in the peripheral area of the display panel 100 to drive the thin film transistor array in the display area.
  • the asymmetric and non-180 degree angle a is bent by making the second non-bending portion 130 bend along a curve C to the back side of the first non-bending portion 120
  • the curve C is a line segment defined by the top surface of the bending portion 110 in the cross-sectional view of FIG. 3, and the curve C extends from the first non-bending portion 120 to the second non-bending portion 120
  • the direction of the folded portion 130 has a bending radius of R1, R2, R3 to Rn in sequence, wherein n ⁇ 2, and R1 ⁇ R2 ⁇ R3 ⁇ ... ⁇ Rn.
  • a is less than 180 degrees, and after bending, the top surface of the second non-bending portion 130 is parallel to the top surface of the first non-bending portion 120. Therefore, after the display device 1000 is bent asymmetrically and at a non-180 degree angle a, the shape of the top surface of the bending portion 110 in the cross-sectional view of FIG. 3 has a curve C composed of a plurality of gradually increasing bending radii. Instead of the semi-circular arc shape obtained by symmetrical and 180-degree bending in the prior art.
  • FIG. 4A is a schematic structural diagram of the display device according to an embodiment of the present invention after being bent at a symmetrical and 180 degree angle
  • FIG. 4B is a schematic diagram of the display device according to an embodiment of the present invention after being bent at an asymmetric and non-180 degree angle.
  • the display device 1000 may further include a first back plate 210, a second back plate 220, a heat dissipation material 300 and a stiffener 400.
  • the first back plate 210 is fixed to the bottom surface of the first non-bending portion 120.
  • the second back plate 220 is fixed to the bottom surface of the second non-bending portion 130.
  • the heat dissipation material 300 is fixed on the bottom surface of the first back plate.
  • the reinforcing material 400 is sandwiched between the heat dissipation material 300 and the second back plate 220.
  • the material of the heat dissipation material 300 can be copper/graphite/foam (Copper & Graphite & Foam) composite material, the heat dissipation material 300 has the functions of heat dissipation, buffering, and shielding.
  • the material of the reinforcing material 400 may be polyethylene terephthalate (Polyethylene terephthalate) Terephthalate, PET) or cycloolefin polymer (Cyclo Olefin Polymer, COP), the reinforcing material 400 is used to reinforce the structural strength of the display device.
  • the strong material 400 and the second back plate 220 jointly surround and define a space 500.
  • the space 500 is filled with a filler 600, and the filler 600 contacts the first back plate 210, the heat dissipation material 300 and the reinforcing material 400.
  • the filler 600 may be rubber, silica gel, ultraviolet curing resin, or metal.
  • the filler 600 can further improve the structural characteristics around the space 500, such as increasing the strength of the structure or the ability to absorb and buffer external forces, so that the structure in the space 500 is not deformed due to the application of external forces.
  • the space 500 may not be filled with the filler 600. However, if the space 500 is filled with the filler 600, since the filler 600 protrudes from the edge of the first non-bending portion 120 or the first back plate 210, it will When the bending portion 110 is bent, the filler 600 can resist the bending portion 110. At the same time, in the process of filling the filling 600, the filling 600 can be adjusted to protrude from the edge of the first non-bending portion 120 or the first back plate 210 by controlling the material or the filling amount of the filling 600 The length of the bending portion 110 is further adjusted to the bending radii R1, R2, R3 to Rn.
  • the bending radii R1, R2, R3 to Rn will also be greater. Therefore, by protruding the filler 600 from the edge of the first non-bending portion 120 or the first back plate 210, it is advantageous to adjust the bending radii R1, R2, R3 to Rn of the bending portion 110, thereby achieving non-bending Symmetrical and non-180 degree bends.
  • an ultraviolet curing glue may be formed on the top surface of the display panel 100 curing resin 115, so that the ultraviolet curing adhesive 115 covers at least the top surface of the bending portion 110, so as to prevent the display panel 100 from being invaded by water and oxygen and to prevent the bending portion 110 from being scratched.
  • the display device 1000 may further include a thin film encapsulation layer 125 disposed on the display panel 100, a touch panel 700, a flexible circuit board 750 of the touch panel, a polarizer 800, a glass cover 900, and the like.
  • the present invention also provides a method of manufacturing a display device. Please refer to FIG. 5.
  • FIG. 5 shows a flowchart of a method for manufacturing a display device according to an embodiment of the present invention.
  • the method of manufacturing the display device 1000 includes the following steps.
  • a display panel 1000 is provided.
  • the display panel 1000 includes a bending portion 110, a first non-bending portion 120 and a second non-bending portion 130.
  • the first non-bending portion 120 and the second non-bending portion 130 are respectively disposed on two opposite sides of the bending portion 110.
  • the first non-bending portion 120 refers to the display area of the display panel 100
  • the second non-bending portion 130 refers to the peripheral area of the display panel 100.
  • a driver IC (driver IC) is provided in the peripheral area of the display panel 100 to drive the thin film transistor array in the display area.
  • step S200 the second non-bending portion 130 is bent to the back side of the first non-bending portion 120 by bending the bending portion 110 asymmetrically and at a non-180 degree angle. .
  • the asymmetric and non-180 degree angle a is bent by making the second non-bending portion 130 bend along a curve C to the back side of the first non-bending portion 120
  • the curve C is a line segment defined by the top surface of the bending portion 110 in a cross-sectional view, and the curve C extends from the first non-bending portion 120 to the second non-bending portion
  • the direction of 130 has a bending radius of R1, R2, R3 to Rn in sequence, where n ⁇ 2, and R1 ⁇ R2 ⁇ R3 ⁇ ... ⁇ Rn.
  • a is less than 180 degrees, and after bending, the top surface of the second non-bending part 130 is parallel to the top surface of the first non-bending part 120. Therefore, after the display device 1000 is bent asymmetrically and at a non-180 degree angle a, the shape of the top surface of the bent portion 110 in a cross-sectional view has a curve C composed of a plurality of gradually increasing bending radii, instead of In the prior art, a semi-circular arc shape obtained by symmetrical and 180-degree bending.
  • a filler 600 can be filled under the first non-bending portion 120 before bending, so that the filler 600 protrudes from the first non-bending portion 120.
  • the edges of the bending portion 120 are such that the filler 600 can resist the bending portion 110 when bending, which is beneficial to adjust the bending radii R1, R2, R3 to Rn of the bending portion 110.
  • the present invention provides a display device and a manufacturing method thereof.
  • the display device can have a narrow frame width, so as to solve the technical problem that the frame width of the existing display device cannot be further reduced.

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  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
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  • Optics & Photonics (AREA)
  • Manufacturing & Machinery (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

本发明提出一种显示装置及其制造方法。所述显示装置包括一显示面板。所述显示面板包括一弯折部及一第一非弯折部与一第二非弯折部。所述第一非弯折部与所述第二非弯折部分别设置在所述弯折部的两相对侧。所述第二非弯折部是通过对所述弯折部以非对称且非180度角度弯折的方式配置在所述第一非弯折部的背侧。本发明可以解决现有显示装置的边框宽度无法进一步减小的技术问题。

Description

显示装置及其制造方法 技术领域
本发明涉及显示技术领域，特别涉及一种显示装置及其制造方法。
 背景技术
在现代通信领域中，手机、电视、平板、笔记本电脑、数码相机等产品市场需求越来越大，各种显示设备也朝向可弯折发展。当然，在柔性全屏面显示装置的制造工艺中，必需将驱动芯片(driver IC)弯折到显示面板的背侧，以缩小下侧边框或下边框(down border)的宽度，并实现全屏面显示。
如图1所示，现有显示产品2000的弯折设计是采用对弯折部110的中心线进行对称弯折，亦即将显示产品2000弯折180度。这样的设计能够良好的平衡在弯折区域中被弯折的导电线路150所承受的应力。然而，这样的设计也限制了边框的宽度W。对于朝向窄边框（尤其是窄的下边框）发展的显示产品，这样的对称弯折设计已经无法使得边框具有更窄的宽度。
因此，有必要提供一种显示装置及其制造方法，以解决现有技术所存在的问题。
 技术问题
本发明的目的在于提供一种显示装置及其制造方法，以解决现有技术中显示装置的边框宽度无法进一步减小的技术问题。
 技术解决方案
为解决上述技术问题，本发明提供一种显示装置。所述显示装置包括一显示面板。所述显示面板包括一弯折部及一第一非弯折部与一第二非弯折部。所述第一非弯折部与所述第二非弯折部分别设置在所述弯折部的两相对侧。所述第二非弯折部是通过对所述弯折部以非对称且非180度角度弯折的方式配置在所述第一非弯折部的背侧。
在本发明实施例提供的显示装置中，所述非对称且非180度角度弯折的方式是通过使所述第二非弯折部以沿着一曲线弯折到所述第一非弯折部的背侧来达成，所述曲线为所述弯折部的顶表面在剖面视图所定义的线段，所述曲线在从所述第一非弯折部延伸至所述第二非弯折部的方向上依序具有R1、R2、R3至Rn的弯曲半径，其中n≥2，且R1<R2<R3<…<Rn。
在本发明实施例提供的显示装置中，所述显示装置还包括一第一背板、一第二背板、一散热材及一补强材。所述第一背板固定于所述第一非弯折部的底表面。所述第二背板固定于所述第二非弯折部的底表面。所述散热材固定于所述第一背板的底表面。所述补强材夹设在所述散热材与所述第二背板之间。
在本发明实施例提供的显示装置中，所述散热材的材质为铜/石墨/发泡的复合材料。
在本发明实施例提供的显示装置中，所述补强材的材质为聚对苯二甲酸乙二酯或环烯烃聚合物。
在本发明实施例提供的显示装置中，所述显示装置另包含一填充物，所述填充物接触所述第一背板、所述散热材及所述补强材，所述填充物突出于所述第一背板的边缘并抵顶住所述弯折部。
在本发明实施例提供的显示装置中，所述填充物是橡胶、硅胶、紫外线硬化树脂、或金属。
本发明还提供一种制造显示装置的方法。所述方法包括提供一显示面板，所述显示面板包括一弯折部及一第一非弯折部与一第二非弯折部，所述第一非弯折部与所述第二非弯折部分别设置在所述弯折部的两相对侧。所述方法还包括将所述第二非弯折部通过对所述弯折部以非对称且非180度角度弯折的方式弯折到所述第一非弯折部的背侧。
在本发明实施例提供的制造显示装置的方法中，所述非对称且非180度角度弯折的方式是通过使所述第二非弯折部以沿着一曲线弯折到所述第一非弯折部的背侧来达成，所述曲线为所述弯折部的顶表面在剖面视图所定义的线段，所述曲线在从所述第一非弯折部延伸至所述第二非弯折部的方向上依序具有R1、R2、R3至Rn的弯曲半径，其中n≥2，且R1<R2<R3<…<Rn。
在本发明实施例提供的制造显示装置的方法中，所述方法更包括填入一填充物到所述第一非弯折部下方，所述填充物突出于所述第一非弯折部的边缘。
 有益效果
相较于现有技术，本发明提出一种显示装置及其制造方法。通过将显示装置进行非对称且非180度角度的弯折，可以使得显示装置具有窄的边框宽度，以解决现有显示装置的边框宽度无法进一步减小的技术问题。
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
 附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术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，对于本领域普通技术人员来讲，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是现有技术的显示面板的弯折设计的示意图。
图2是根据本发明实施例的显示装置的剖面侧视图。
图3是图2中A区域的放大图。
图4A是根据本发明实施例的显示装置在进行对称且180度的弯折之后的结构示意图。
图4B是根据本发明实施例的显示装置在进行非对称且非180度角度的弯折之后的结构示意图。
图5显示根据本发明实施例的一种制造显示装置的方法的流程图。
 本发明的实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施之特定实施例。本发明所提到的方向用语，例如“上”、“下”、“前”、“后”、“左”、“右”、“顶”、“底”、“水平”、“垂直”等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。
本发明提供了一种显示装置。请参照图2和图3，图2是根据本发明实施例的显示装置的剖面侧视图，图3是图2中A区域的放大图。
本发明的显示装置1000包括一显示面板100。所述显示面板100包括一弯折部110及一第一非弯折部120与一第二非弯折部130。所述第一非弯折部120与所述第二非弯折部130分别设置在所述弯折部110的两相对侧。所述第二非弯折部130是通过对所述弯折部110以非对称且非180度角度a弯折的方式配置在所述第一非弯折部120的背侧。
由于所述显示面板100被弯折，所述显示面板100必须具有柔性。在一优选的实施例中，所述显示面板100是柔性有机发光二极管(organic light emitting diode，OLED)显示面板，但本发明不限于此。
在一实施方案中，所述第一非弯折部120是指显示面板100的显示区域，所述第二非弯折部130是指显示面板100的周边区域。显示面板100的周边区域中具有驱动芯片(driver IC)以驱动显示区域中的薄膜电晶体阵列。通过将驱动芯片(driver IC)所位在的周边区域弯折到显示面板100的背侧，可以缩小显示装置1000的下侧边框或下边框(down border)的宽度。因此，本发明的弯折设计是应用于全屏面显示装置。
具体的，所述非对称且非180度角度a弯折的方式是通过使所述第二非弯折部130以沿着一曲线C弯折到所述第一非弯折部120的背侧来达成，所述曲线C为所述弯折部110的顶表面在图3剖面视图所定义的线段，所述曲线C在从所述第一非弯折部120延伸至所述第二非弯折部130的方向上依序具有R1、R2、R3至Rn的弯曲半径，其中n≥2，且R1<R2<R3<…<Rn。
如图3所示，a是小于180度的，并且弯折后使得所述第二非弯折部130的顶表面平行于所述第一非弯折部120的顶表面。因此，所述显示装置1000在进行非对称且非180度角度a弯折之后，弯折部110的顶表面在图3剖面视图的形状是具有由多个逐渐增加的弯曲半径构成的曲线C，而不是现有技术中通过对称且180度弯折所得到的半圆弧形。
请再参照图4A和图4B。图4A是根据本发明实施例的显示装置在进行对称且180度的弯折之后的结构示意图，图4B是根据本发明实施例的显示装置在进行非对称且非180度角度的弯折之后的结构示意图。比较图4A和图4B，可知相较于对称且180度弯折，非对称且非180度弯折可以使得边框的宽度进一步缩小DX。
所述显示装置1000还可以包括一第一背板210、一第二背板220、一散热材300及一补强材(stiffener)400。所述第一背板210固定于所述第一非弯折部120的底表面。所述第二背板220固定于所述第二非弯折部130的底表面。所述散热材300固定于所述第一背板的底表面。所述补强材400夹设在所述散热材300与所述第二背板220之间。
所述散热材300的材质可以为铜/石墨/发泡(Copper & Graphite& Foam)的复合材料，所述散热材300具有散热、缓冲、屏蔽的作用。所述补强材400的材质可以为聚对苯二甲酸乙二酯(Polyethylene Terephthalate，PET)或环烯烃聚合物(Cyclo Olefin Polymer，COP)，所述补强材400用以补强显示装置的结构强度。
如图3所示，所述第一非弯折部120、所述弯折部110、所述第二非弯折部130、所述第一背板210、所述散热材300、所述补强材400及所述第二背板220共同环绕且限定一空间500。所述空间500填入有一填充物600，且所述填充物600接触所述第一背板210、所述散热材300及所述补强材400。所述填充物600可以是橡胶、硅胶、紫外线硬化树脂、或金属。所述填充物600可以进一步提升所述空间500周遭处的结构特性，例如增加结构强度或吸收且缓冲外力的能力，以使所述空间500处的结构不因外力对其的施加而变形。
所述空间500亦可以不填入有所述填充物600。然而，若所述空间500填入有所述填充物600，由于所述填充物600突出于所述第一非弯折部120或所述第一背板210的边缘，则在对所述弯折部110进行弯折时，所述填充物600可以抵顶住所述弯折部110。同时，可以在填入填充物600的工序中，通过控制填充物600的材质或是填入量来调整填充物600突出于所述第一非弯折部120或所述第一背板210边缘的长度，进而调整弯折部110的弯曲半径R1、R2、R3至Rn。也就是说，当填充物600突出于所述第一非弯折部120或所述第一背板210边缘的长度越大，则弯曲半径R1、R2、R3至Rn也会越大。因此通过将填充物600突出于所述第一非弯折部120或所述第一背板210边缘的配置，有利于调整弯折部110的弯曲半径R1、R2、R3至Rn，进而实现非对称且非180度角度的弯折。
进一步的，所述显示面板100的顶表面上可以形成有一紫外线硬化胶(UV curing resin)115，使得所述紫外线硬化胶115至少覆盖所述弯折部110的顶表面，以避免所述显示面板100受到水氧入侵且防止弯折部110受到刮伤。
所述显示装置1000还可以包括设置在显示面板100上的薄膜封装层125、触控面板700、触控面板的软性电路板750、偏光片800、玻璃外盖900等。
本发明还提供了一种制造显示装置的方法。请参照图5，图5显示根据本发明实施例的一种制造显示装置的方法的流程图。
所述制造显示装置1000的方法包括以下步骤。
在步骤S100中，提供一显示面板1000。所述显示面板1000包括一弯折部110及一第一非弯折部120与一第二非弯折部130。所述第一非弯折部120与所述第二非弯折部130分别设置在所述弯折部110的两相对侧。
在一实施方案中，所述第一非弯折部120是指显示面板100的显示区域，所述第二非弯折部130是指显示面板100的周边区域。显示面板100的周边区域中具有驱动芯片(driver IC)以驱动显示区域中的薄膜电晶体阵列。通过将驱动芯片(driver IC)所位在的周边区域弯折到显示面板100的背侧，可以缩小显示装置1000的下侧边框或下边框(down border)的宽度。因此，本发明的方法是应用于全屏面显示装置的制造。
在步骤S200中，将所述第二非弯折部130通过对所述弯折部110以非对称且非180度角度弯折的方式弯折到所述第一非弯折部120的背侧。
具体的，所述非对称且非180度角度a弯折的方式是通过使所述第二非弯折部130以沿着一曲线C弯折到所述第一非弯折部120的背侧来达成，所述曲线C为所述弯折部110的顶表面在剖面视图所定义的线段，所述曲线C在从所述第一非弯折部120延伸至所述第二非弯折部130的方向上依序具有R1、R2、R3至Rn的弯曲半径，其中n≥2，且R1<R2<R3<…<Rn。
a是小于180度的，并且弯折后使得所述第二非弯折部130的顶表面平行于所述第一非弯折部120的顶表面。因此，所述显示装置1000在进行非对称且非180度角度a弯折之后，弯折部110的顶表面在剖面视图的形状是具有由多个逐渐增加的弯曲半径构成的曲线C，而不是现有技术中通过对称且180度弯折所得到的半圆弧形。
为了实现非对称且非180度角度的弯折，可以在弯折之前先填入一填充物600到所述第一非弯折部120下方，使得所述填充物600突出于所述第一非弯折部120的边缘，这使得在弯折时所述填充物600可以抵顶住所述弯折部110，有利于调整弯折部110的弯曲半径R1、R2、R3至Rn。
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。
 工业实用性
相较于现有技术，本发明提出一种显示装置及其制造方法。通过将显示装置进行非对称且非180度角度的弯折，可以使得显示装置具有窄的边框宽度，以解决现有显示装置的边框宽度无法进一步减小的技术问题。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (10)

  1. 一种显示装置，所述显示装置包括一显示面板，所述显示面板包括：
    一弯折部；及
    一第一非弯折部与一第二非弯折部，所述第一非弯折部与所述第二非弯折部分别设置在所述弯折部的两相对侧，所述第二非弯折部是通过对所述弯折部以非对称且非180度角度弯折的方式配置在所述第一非弯折部的背侧。
  2. 根据权利要求1所述的显示装置，其中所述非对称且非180度角度弯折的方式是通过使所述第二非弯折部以沿着一曲线弯折到所述第一非弯折部的背侧来达成，所述曲线为所述弯折部的顶表面在剖面视图所定义的线段，所述曲线在从所述第一非弯折部延伸至所述第二非弯折部的方向上依序具有R1、R2、R3至Rn的弯曲半径，其中n≥2，且R1<R2<R3<…<Rn。
  3. 根据权利要求1所述的显示装置，其还包括：
    一第一背板，所述第一背板固定于所述第一非弯折部的底表面；
    一第二背板，所述第二背板固定于所述第二非弯折部的底表面；
    一散热材，所述散热材固定于所述第一背板的底表面；及
    一补强材，所述补强材夹设在所述散热材与所述第二背板之间。
  4. 根据权利要求3所述的显示装置，其中所述散热材的材质为铜/石墨/发泡的复合材料。
  5. 根据权利要求3所述的显示装置，其中所述补强材的材质为聚对苯二甲酸乙二酯或环烯烃聚合物。
  6. 根据权利要求3所述的显示装置，其另包含一填充物，所述填充物接触所述第一背板、所述散热材及所述补强材，所述填充物突出于所述第一背板的边缘并抵顶住所述弯折部。
  7. 根据权利要求6所述的显示装置，其中所述填充物是橡胶、硅胶、紫外线硬化树脂、或金属。
  8. 一种制造显示装置的方法，其包括：
    提供一显示面板，所述显示面板包括：
    一弯折部；及
    一第一非弯折部与一第二非弯折部，所述第一非弯折部与所述第二非弯折部分别设置在所述弯折部的两相对侧；及
    将所述第二非弯折部通过对所述弯折部以非对称且非180度角度弯折的方式弯折到所述第一非弯折部的背侧。
  9. 根据权利要求8所述的制造显示装置的方法，其中所述非对称且非180度角度弯折的方式是通过使所述第二非弯折部以沿着一曲线弯折到所述第一非弯折部的背侧来达成，所述曲线为所述弯折部的顶表面在剖面视图所定义的线段，所述曲线在从所述第一非弯折部延伸至所述第二非弯折部的方向上依序具有R1、R2、R3至Rn的弯曲半径，其中n≥2，且R1<R2<R3<…<Rn。
  10. 根据权利要求9所述的制造显示装置的方法，其更包括：
    填入一填充物到所述第一非弯折部下方，所述填充物突出于所述第一非弯折部的边缘。
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US11335217B2 (en) 2022-05-17
US20210407338A1 (en) 2021-12-30

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