WO2020113756A1 - 一种显示面板、显示模组以及电子装置 - Google Patents

一种显示面板、显示模组以及电子装置 Download PDF

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Publication number
WO2020113756A1
WO2020113756A1 PCT/CN2019/070488 CN2019070488W WO2020113756A1 WO 2020113756 A1 WO2020113756 A1 WO 2020113756A1 CN 2019070488 W CN2019070488 W CN 2019070488W WO 2020113756 A1 WO2020113756 A1 WO 2020113756A1
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Prior art keywords
area
display panel
buffer
bending
display
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English (en)
French (fr)
Inventor
蔡哲汶
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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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Priority to US16/326,207 priority Critical patent/US10651120B1/en
Publication of WO2020113756A1 publication Critical patent/WO2020113756A1/zh
Anticipated expiration legal-status Critical
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating 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

Definitions

  • the invention relates to the field of display technology, in particular to a display panel, a display module and an electronic device.
  • the existing display panel includes a display area, a bending area and an external pin bonding area (OLB, out lead bonding), the display area is used to display the screen, the bending area is located between the display area and the external pin bonding area, and the bending area is provided with multiple wires.
  • OLB external pin bonding area
  • the bending area is usually bent to bend the external pin bonding area to the back of the screen to connect with the driving chip.
  • the object of the present invention is to provide a display panel, a display module and an electronic device, which can reduce the stress during the bending process and prevent the wires in the bending region from breaking.
  • the present invention provides a display panel, which includes:
  • the flexible substrate includes a bending portion, the position of the bending portion corresponds to the position of the bending area of the display panel; the bending portion is provided with at least one buffer hole, the buffer hole and the bending The back of the part is provided with a cushioning material.
  • the back surface of the bent portion is provided with the buffer hole.
  • the bending area is located between the display area and the external pin bonding area
  • the buffer holes are provided at both ends of the bent portion, one end of the bent portion is close to the display area, and the other end of the bent portion is close to the external pin junction area.
  • At least a setting area on the back surface of the bent portion is provided with a buffer material, and the position of the setting area corresponds to the position of the buffer hole.
  • two adjacent buffer holes are overlapped.
  • two adjacent buffer holes are arranged at intervals.
  • the buffer material includes at least one of glue and polymer material.
  • the buffer hole is a through hole or a blind hole.
  • the longitudinal cross-sectional shape of the buffer hole is at least one of rectangular, triangular, trapezoidal, and polygonal.
  • the present invention provides a display module, including any one of the above display panels.
  • the invention provides an electronic device including the above display module.
  • At least one buffer hole is provided in the bending portion of the flexible substrate, and buffer materials are provided in the buffer hole and the back of the bending portion, thereby reducing the bending process To prevent the wire in the bending area from breaking.
  • FIG. 1 is a top view of the display panel of the present invention
  • FIG. 3 is a first plan view of the bent portion in the flexible substrate of the present invention.
  • FIG. 5 is a third plan view of the bent portion in the flexible substrate of the present invention.
  • FIG. 7 is a cross-sectional view of a buffer hole in a flexible substrate of the present invention.
  • FIG. 8 is a schematic structural diagram of a second step of the method for manufacturing a flexible substrate of the present invention.
  • FIG. 9 is a schematic structural diagram of a third step of the method for manufacturing a flexible substrate of the present invention.
  • FIG. 10 is a schematic diagram of a first structure of a flexible substrate after bending according to the present invention.
  • FIG. 11 is a second schematic structural diagram of a flexible substrate after bending according to the present invention.
  • FIG. 1 is a top view of a display panel of the present invention.
  • the display panel 100 of the present invention has a display area 101, a bending area 102, and an external pin bonding area 103.
  • the bending area 102 refers to a bendable area, which can be in a flat state or Bent state. During the specific manufacturing process, the bending area 102 of the display panel is bent to connect the external pin junction area 103 to the driving chip on the back of the display panel.
  • the cross-sectional structure of the display panel 100 includes a flexible substrate 10.
  • the flexible substrate 10 includes an upper half 11, a bent portion 12, and a lower half 13.
  • the upper half 11 corresponds to the position of the display area 101
  • the lower half 13 corresponds to the outer pin bonding area 103.
  • the position corresponds
  • the bent portion 12 corresponds to the position of the bent region 102.
  • the bent portion 12 is provided with at least one buffer hole 121, for example, a plurality of buffer holes 121 are provided below the bent portion 12 (that is, the back surface, close to the glass substrate side), which can be understood
  • a thin film transistor is provided above the bent portion 12 (front side).
  • the buffer holes 121 are regularly arranged, for example, the buffer holes 121 are arranged at equal intervals.
  • the buffer holes 121 are irregularly arranged, for example, the buffer holes 121 are randomly arranged.
  • two adjacent buffer holes 121 are overlapped. The two adjacent buffer holes 121 partially overlap. In other embodiments, some of the buffer holes 121 overlap each other.
  • the arrangement of the buffer holes 121 is not limited to the above.
  • the plan view shape of the buffer hole 121 is shown as A1-A6.
  • the plan view shape may be a circle, a triangle, a rectangle, a pentagon, or a polygon.
  • the longitudinal cross-sectional structure of the buffer hole 121 is shown as B1-B6.
  • the longitudinal cross-sectional shape may be triangular, rectangular, trapezoidal, etc. Of course, other shapes such as polygonal, semicircular, etc.
  • the buffer hole 121 may be a blind hole or a through hole. When the buffer hole 121 is a blind hole, the top of the buffer hole does not contact the upper surface of the flexible substrate.
  • the buffer hole 121 and the lower portion (back surface) of the bent portion 12 are filled with a buffer material 14.
  • a buffer material 14 is provided on the entire back surface of the bent portion 12.
  • both back surfaces of the bending portion 12 and the buffer hole 121 are provided with Buffer material 14.
  • the area of the orthographic projection of the buffer material 14 on the back of the bent portion 12 on the flexible substrate 10 is greater than or equal to the area of the orthographic projection of the buffer hole 121 on the flexible substrate 10.
  • a buffer material 14 may also be provided on the entire back surface of the bent portion 12.
  • the manufacturing method of the base substrate of the present invention includes:
  • a buffer hole 121 is formed on the back of the bent portion 12.
  • the buffer hole 121 is formed by mechanical processing, etching processing, or laser processing. Dry etching (Dry etch) or wet etching (Wet etch) etching method.
  • the wavelengths that can be used for laser processing include at least one of 343 nm, 355 nm, 515 nm, 532 nm, 1030 nm, and 1064 nm.
  • the laser used may be one of a solid-state laser and an ultrafast pulse laser.
  • a coating device 20 is used to spray glue or liquid polymer material on the back surface of the bent portion 12 to form a buffer layer in the buffer hole 121 and the back surface of the bent portion 12.
  • the filling material includes glue or liquid polymer materials.
  • Spraying method can be precision coating (Slot die coating), inkjet printing (Injet One of printing and dispensing.
  • the bent portion 12 is baked or light-cured to cure the filler material.
  • the structure of the flexible substrate 10 after being bent is shown in FIG. 10, and the buffer hole 121 is provided below (backside) of the entire bent portion 12. That is, the buffer holes 121 completely cover the bent portion 12.
  • the display panel has a bending area 101, a display area 102, and an external pin bonding area 103.
  • the display module corresponding to the display panel further includes a backplane, the backplane is disposed inside the curved display panel, and the backplane One end is flush with the ends of the display area 102 and the external pin junction area 103, and the length of the other end of the backplane beyond the preset bending area is 0.2mm ⁇ 0.5mm.
  • the actual bending The area 102 is smaller than the preset bending area, so the backplane exceeds the above-mentioned range of the preset bending area, and can better support the display panel.
  • a support 30 is also provided between the upper inner side and the lower inner side of the flexible substrate 10.
  • the structure of the display panel after bending is shown in FIG. 11, at least a part of the back of the bending portion 12
  • the buffer hole 121 is provided. That is, the buffer hole 121 is provided only under part of the bent portion 12. That is, the lower portion of the bent portion 12 is covered with the buffer hole 121.
  • the buffer holes 121 are provided at both ends of the bent portion 12, one end of the bent portion 12 is close to the display area 101, and the other end of the bent portion 12 is close to the external pin junction area 103.
  • the stress during bending can be reduced, the wire of the bent portion can be prevented from being broken, the display effect is improved, and in addition, the scrap rate of the product is reduced and the production cost is reduced.
  • the present invention also provides a display module including any one of the above display panels.
  • the invention also provides an electronic device including the above display module.
  • At least one buffer hole is provided in the bending portion of the flexible substrate, and buffer materials are provided in the buffer hole and the back of the bending portion, thereby reducing the bending process To prevent the wire in the bending area from breaking.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种显示面板(100)、显示模组以及电子装置,显示面板(100)包括:柔性衬底(10),其包括弯折部(12),弯折部(12)的位置与显示面板(100)的弯折区域(102)的位置对应;弯折部(12)设置有至少一个缓冲孔(121),缓冲孔(121)内以及弯折部(12)的背面设置有缓冲材料(14)。

Description

一种显示面板、显示模组以及电子装置 技术领域
本发明涉及显示技术领域,特别是涉及一种显示面板、显示模组以及电子装置。
背景技术
现有的显示面板包括显示区域、弯折区域和外部引脚接合区(OLB,out lead bonding),显示区域用于显示画面,弯折区域位于显示区域和外部引脚接合区之间,弯折区域设置有多条导线。
为了减小面板的边框尺寸,通常将弯折区域进行弯折,以将外部引脚接合区弯折至屏幕的背面与驱动芯片连接。
技术问题
但是,由于弯折过程中的应力较大,容易损坏弯折区域中的导线,从而降低了显示效果。
技术解决方案
本发明的目的在于提供一种显示面板、显示模组以及电子装置,能够减小弯折过程中的应力,防止弯折区域中的导线发生断裂。
为解决上述技术问题,本发明提供一种显示面板,其包括:
柔性衬底,其包括弯折部,所述弯折部的位置与显示面板的弯折区域的位置对应;所述弯折部设置有至少一个缓冲孔,所述缓冲孔内以及所述弯折部的背面设置有缓冲材料。
在本发明的显示面板中,所述弯折部的至少一部分的背面设置有所述缓冲孔。
在本发明的显示面板中,其中所述显示面板还具有显示区域和外部引脚接合区,所述弯折区域位于所述显示区域和所述外部引脚接合区之间;
所述缓冲孔设置在所述弯折部的两端,所述弯折部的一端靠近所述显示区域,所述弯折部的另一端靠近所述外部引脚接合区。
在本发明的显示面板中,至少所述弯折部的背面的设定区域设置有缓冲材料,所述设定区域的位置与所述缓冲孔的位置对应。
在本发明的显示面板中,相邻两个所述缓冲孔之间交叠设置。
在本发明的显示面板中,相邻两个所述缓冲孔之间间隔设置。
在本发明的显示面板中,所述缓冲材料包括胶水和高分子材料中的至少一种。
在本发明的显示面板中,所述缓冲孔为通孔或者盲孔。
在本发明的显示面板中,所述缓冲孔的纵截面形状为长方形、三角形、梯形以及多边形中的至少一种。
本发明提供一种显示模组,包括上述任意一种显示面板。
本发明提供一种电子装置,包括上述显示模组。
有益效果
本发明的显示面板、显示模组以及电子装置,由于在柔性衬底的弯折部设置至少一个缓冲孔,且缓冲孔内和弯折部的背面设置有缓冲材料,从而减小弯折过程中的应力,防止弯折区域中的导线发生断裂。
附图说明
图1为本发明显示面板的俯视图;
图2为本发明柔性衬底的俯视图;
图3为本发明柔性衬底中弯折部的第一种俯视图;
图4为本发明柔性衬底中弯折部的第二种俯视图;
图5为本发明柔性衬底中弯折部的第三种俯视图;
图6为本发明缓冲孔的俯视图;
图7为本发明柔性衬底中缓冲孔的剖视图;
图8为本发明柔性衬底的制作方法的第二步结构示意图;
图9为本发明柔性衬底的制作方法的第三步结构示意图;
图10为本发明弯折后的柔性衬底的第一种结构示意图;
图11为本发明弯折后的柔性衬底的第二种结构示意图。
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的特定实施例。本发明所提到的方向用语,例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」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。在图中,结构相似的单元是以相同标号表示。
请参照图1至11,图1为本发明显示面板的俯视图。
如图1所示,在俯视角下,本发明的显示面板100具有显示区域101、弯折区域102以及外部引脚接合区103,弯折区域102是指可以弯曲的区域,可以处于平面状态或弯曲状态。在具体制程过程中,将显示面板的弯折区域102进行弯曲,以将外部引脚接合区103与显示面板背面的驱动芯片连接。其中结合图2,所述显示面板100的截面结构包括柔性衬底10。
如图2所示,柔性衬底10包括上半部11、弯折部12以及下半部13,上半部11与显示区域101的位置对应,下半部13与外部引脚接合区103的位置对应,弯折部12与弯折区域102的位置对应。结合图10和11,所述弯折部12设置有至少一个缓冲孔121,比如所述弯折部12的下方(也即背面,靠近玻璃基板侧)设置有多个缓冲孔121,可以理解的弯折部12的上方(正面)设置有薄膜晶体管。
在一实施方式中,如图3所示,所述缓冲孔121规则排布,比如所述缓冲孔121等间距排布。在另一实施方式中,如图4所示,所述缓冲孔121非规律性排布,比如所述缓冲孔121散乱排布。在又一实施方式中,如图5所示,相邻两个所述缓冲孔121交叠设置。相邻两个所述缓冲孔121之间部分重叠。在其他实施方式中,部分所述缓冲孔121之间相互重叠。当然可以理解的,所述缓冲孔121的排布方式不限于以上几种。
如图6所示,在俯视角下,所述缓冲孔121的俯视形状如A1-A6所示,俯视形状可以为圆形、三角形、长方形、五边形、多边形等。如图7所示,所述缓冲孔121的纵截面结构如B1-B6所示,纵截面形状可以为三角形、长方形以及梯形等,当然还可以为其他形状,比如多边形、半圆形等。
所述缓冲孔121可以为盲孔或者通孔,当所述缓冲孔121为盲孔时,缓冲孔的顶部与柔性衬底的上表面不接触。
其中,结合图9至11,所述缓冲孔121内以及所述弯折部12的下方(背面)填充有缓冲材料14。其中至少所述弯折部12的背面的设定区域(图中未示出)设置有缓冲材料14,所述设定区域与所述缓冲孔121的位置对应。在一实施方式中,如图10所示,当所述弯折部12的整个背面都设置有缓冲孔121时,在所述弯折部12的整个背面上都设置有缓冲材料14。在另一实施方式中,如图11所示,当所述弯折部12的部分背面设置有缓冲孔121时,在所述弯折部12与所述缓冲孔121对应的背面上都设置有缓冲材料14。优选地,所述弯折部12的背面的缓冲材料14在柔性衬底10上的正投影的面积大于或者等于所述缓冲孔121在所述柔性衬底10上的正投影的面积。当然,可以理解的,当所述弯折部12的部分背面设置有缓冲孔121时,也可在所述弯折部12多的整个背面都设置缓冲材料14。
本发明的衬底基板的制作方法包括:
S101、在弯折部12的背面形成缓冲孔121。
例如,通过机械加工、蚀刻加工或激光加工的方式形成该缓冲孔121,蚀刻可以使用干法刻蚀(Dry etch)或湿法刻蚀(Wet etch)蚀刻方式。
激光加工可使用的波长包括343nm、355nm、515nm、532nm、1030nm以及1064nm中的至少一种,所使用的激光可以为固态激光和超快脉冲激光中的一种。
S102、在所述缓冲孔121内以及所述弯折部12的背面涂布填充材料。
例如,如图8所示,使用涂布装置20在弯折部12的背面喷涂胶水或液态高分子材料,以在缓冲孔121内和弯折部12的背面形成缓冲层。其中填充材料包括胶水或液态高分子材料。喷涂方式可以为精密涂布(Slot die coating)、喷墨打印(Injet printing)以及涂胶(Dispensing)中的一种。
S103、对所述填充材料进行固化。
如图9所示,涂布完成后,对弯折部12进行烘烤或光照固化,以使上述填充材料固化。
在一实施例中,柔性衬底10弯折后的结构如图10所示,整个所述弯折部12的下方(背面)设置有所述缓冲孔121。也即缓冲孔121全部覆盖所述弯折部12。显示面板具有弯折区域101、显示区域102以及外部引脚接合区103,该显示面板对应的显示模组还包括背板,所述背板设置在弯曲的显示面板的内侧,所述背板的一端分别与显示区域102、外部引脚接合区103的端部齐平,且背板的另一端超出预设弯折区域的长度范围为0.2mm~0.5mm,在实际弯曲过程中,实际弯折区域102小于预设弯折区域,因此背板超出预设弯折区域上述范围,可以更好地支撑显示面板。柔性衬底10的上方的内侧和下方的内侧之间还设置有支撑件30。
由于弯折部的两端的弯折应力较大,因此为了简化制程工艺,在另一实施例中,显示面板弯折后的结构如图11所示,所述弯折部12的至少一部分的背面设置有所述缓冲孔121。也即仅部分所述弯折部12的下方设置有所述缓冲孔121。也即所述弯折部12的下方部分覆盖有缓冲孔121。其中所述缓冲孔121设置在所述弯折部12的两端,所述弯折部12的一端靠近所述显示区域101,所述弯折部12的另一端靠近所述外部引脚接合区103。
由于弯曲部分设置多个缓冲孔,能够减小弯折时的应力,避免弯折部的导线发生断裂,提高了显示效果,此外减少了产品的报废率,降低了生产成本。
本发明还提供一种显示模组,其包括上述任意一种显示面板。
本发明还提供一种电子装置,其包括上述显示模组。
本发明的显示面板、显示模组以及电子装置,由于在柔性衬底的弯折部设置至少一个缓冲孔,且缓冲孔内和弯折部的背面设置有缓冲材料,从而减小弯折过程中的应力,防止弯折区域中的导线发生断裂。
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 (20)

  1. 一种显示面板,其包括:
    柔性衬底,其包括弯折部,所述弯折部的位置与显示面板的弯折区域的位置对应;所述弯折部设置有至少一个缓冲孔,所述缓冲孔内以及所述弯折部的背面设置有缓冲材料。
  2. 根据权利要求1所述的显示面板,其中
    所述弯折部的至少一部分的背面设置有所述缓冲孔。
  3. 根据权利要求2所述的显示面板,其中
    所述显示面板还具有显示区域和外部引脚接合区,所述弯折区域位于所述显示区域和所述外部引脚接合区之间;
    所述缓冲孔设置在所述弯折部的两端,所述弯折部的一端靠近所述显示区域,所述弯折部的另一端靠近所述外部引脚接合区。
  4. 根据权利要求1所述的显示面板,其中
    至少所述弯折部的背面的设定区域设置有缓冲材料,所述设定区域的位置与所述缓冲孔的位置对应。
  5. 根据权利要求1所述的显示面板,其中
    相邻两个所述缓冲孔之间交叠设置。
  6. 根据权利要求1所述的显示面板,其中
    相邻两个所述缓冲孔之间间隔设置。
  7. 根据权利要求1所述的显示面板,其中
    所述缓冲材料包括胶水和高分子材料中的至少一种。
  8. 根据权利要求1所述的显示面板,其中
    所述缓冲孔为通孔或者盲孔。
  9. 根据权利要求1所述的显示面板,其中
    所述缓冲孔的纵截面形状为长方形、三角形、梯形以及多边形中的至少一种。
  10. 一种显示模组,其包括显示面板,其包括:
    柔性衬底,其包括弯折部,所述弯折部的位置与显示面板的弯折区域的位置对应;所述弯折部设置有至少一个缓冲孔,所述缓冲孔内以及所述弯折部的背面设置有缓冲材料。
  11. 根据权利要求10所述的显示模组,其中
    所述弯折部的至少一部分的背面设置有所述缓冲孔。
  12. 根据权利要求11所述的显示模组,其中
    所述显示面板还具有显示区域和外部引脚接合区,所述弯折区域位于所述显示区域和所述外部引脚接合区之间;
    所述缓冲孔设置在所述弯折部的两端,所述弯折部的一端靠近所述显示区域,所述弯折部的另一端靠近所述外部引脚接合区。
  13. 根据权利要求10所述的显示模组,其中
    至少所述弯折部的背面的设定区域设置有缓冲材料,所述设定区域的位置与所述缓冲孔的位置对应。
  14. 根据权利要求10所述的显示模组,其中
    相邻两个所述缓冲孔之间交叠设置。
  15. 根据权利要求10所述的显示模组,其中
    相邻两个所述缓冲孔之间间隔设置。
  16. 根据权利要求10所述的显示模组,其中
    所述缓冲材料包括胶水和高分子材料中的至少一种。
  17. 根据权利要求10所述的显示模组,其中
    所述缓冲孔为通孔或者盲孔。
  18. 一种电子装置,其包括显示模组,其包括显示面板,其包括:
    柔性衬底,其包括弯折部,所述弯折部的位置与显示面板的弯折区域的位置对应;所述弯折部设置有至少一个缓冲孔,所述缓冲孔内以及所述弯折部的背面设置有缓冲材料。
  19. 根据权利要求18所述的电子装置,其中
    所述弯折部的至少一部分的背面设置有所述缓冲孔。
  20. 根据权利要求19所述的电子装置,其中
    所述显示面板还具有显示区域和外部引脚接合区,所述弯折区域位于所述显示区域和所述外部引脚接合区之间;
    所述缓冲孔设置在所述弯折部的两端,所述弯折部的一端靠近所述显示区域,所述弯折部的另一端靠近所述外部引脚接合区。
PCT/CN2019/070488 2018-12-03 2019-01-04 一种显示面板、显示模组以及电子装置 Ceased WO2020113756A1 (zh)

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