WO2019090819A1 - 一种柔性goa显示面板及其制作方法 - Google Patents

一种柔性goa显示面板及其制作方法 Download PDF

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WO2019090819A1
WO2019090819A1 PCT/CN2017/112055 CN2017112055W WO2019090819A1 WO 2019090819 A1 WO2019090819 A1 WO 2019090819A1 CN 2017112055 W CN2017112055 W CN 2017112055W WO 2019090819 A1 WO2019090819 A1 WO 2019090819A1
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goa
height
goa unit
flexible
area
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PCT/CN2017/112055
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English (en)
French (fr)
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曾勉
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深圳市华星光电半导体显示技术有限公司
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Priority to US15/741,083 priority Critical patent/US10614735B2/en
Publication of WO2019090819A1 publication Critical patent/WO2019090819A1/zh

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    • 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
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters

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  • the present invention relates to the field of screen display technologies, and in particular, to a flexible GOA display panel and a method of fabricating the same.
  • Flexible display devices have become a research hotspot in the display industry due to their characteristics of being foldable, impact resistant and easy to wear.
  • the flexible display panel may damage the circuit of the folding area during the folding process, reduce the life of the folding area circuit, and cause the circuit at the bending area to be broken, which affects the display effect of the entire flexible panel.
  • the existing flexible GOA (Gate Drive IC on Array) display panel includes a display area 1' having a folded area 2', a plurality of rows of pixel units disposed in the display area 1', and is disposed at The multi-level GOA unit circuit 3' on the opposite side of the display area 1', the GOA unit circuit 3' of each stage has a one-to-one correspondence with each row of pixel units in the display area 1' (each pixel unit includes three primary color sub-pixels 11', 12 ', 13'), and the height H of the GOA unit circuit 3' is equal to the height Hp of the pixel unit. Due to the large number of components of the GOA unit circuit, the device density is also very large. If it is designed in the folding area 2' as shown in Fig. 1, its performance will definitely be affected, and it will affect the service life of the panel and production. Yield and so on.
  • the technical problem to be solved by the present invention is to provide a flexible GOA display panel and a manufacturing method thereof to avoid the influence of the folding area on the GOA unit circuit.
  • the present invention provides a flexible GOA display panel, including:
  • a multi-level GOA unit circuit disposed in an unfolded region on opposite sides of the display area, each stage of the GOA unit circuit for driving a pixel unit of a corresponding row;
  • the heights of the GOA unit circuits of each stage are equal and are both smaller than the height of the pixel unit.
  • the height of the GOA unit circuit is Hp-Hf/a, where Hf is the height of the folding area, Hp is the height of the pixel unit, and a is the number of rows of pixel units in the display area.
  • the line resistances between the output ends of the GOA unit circuits of the respective stages and the gate lines of the pixel units of the corresponding rows are equal.
  • a plurality of rows of virtual GOA unit circuits are disposed in the folding area.
  • the height of the virtual GOA unit circuit is equal to the height of the GOA unit circuit.
  • the invention also provides a flexible GOA display panel manufacturing method, comprising:
  • a multi-level GOA unit circuit is disposed in the non-folding area on opposite sides of the display area, and each stage of the GOA unit circuit is used to drive the pixel unit of the corresponding row, and the heights of the GOA unit circuits of each level are equal and smaller than the height of the pixel unit .
  • the height of the GOA unit circuit is Hp-Hf/a, where Hf is the height of the folding area, Hp is the height of the pixel unit, and a is the number of rows of pixel units in the display area.
  • an equal resistance wiring method is adopted between the output ends of the GOA unit circuits of the respective stages and the gate lines of the pixel units of the corresponding rows.
  • the manufacturing method further includes: setting a plurality of rows of virtual GOA unit circuits in the folding area.
  • the height of the virtual GOA unit circuit is equal to the height of the GOA unit circuit.
  • the beneficial effects of the embodiments of the present invention are: redesigning the height of the GOA unit circuit, and reducing the height of the original GOA circuit unit having the same height as the pixel unit, so that the GOA unit circuit distribution can avoid the folding area, and the GOA circuit unit output
  • the circuit corresponding to each row of pixel units adopts an equal resistance wiring method to minimize the influence of the folded area on the characteristics and reliability of the entire flexible GOA panel.
  • FIG. 1 is a schematic structural view of a conventional flexible GOA display panel.
  • FIG. 2 is a schematic diagram of a GOA unit circuit and a pixel arrangement on a conventional flexible GOA display panel.
  • FIG 3 is a schematic structural view of a flexible GOA display panel according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a GOA unit circuit and a pixel arrangement on a GOA display panel according to an embodiment of the present invention.
  • FIG. 5 is another schematic diagram of a GOA unit circuit and a pixel arrangement on a GOA display panel according to an embodiment of the present invention.
  • FIG. 6 is a schematic flow chart of a method for fabricating a flexible GOA display panel according to Embodiment 2 of the present invention.
  • the first embodiment of the present invention provides a flexible GOA display panel, including:
  • a multi-level GOA unit circuit 3 disposed in the unfolded area 10 on opposite sides of the display area 1, each stage of the GOA unit circuit for driving the pixel unit of the corresponding row;
  • the heights of the GOA unit circuits of each stage are equal and are both smaller than the height of the pixel unit.
  • the GOA unit circuit 3 is arranged in such a manner as to avoid the folding area 2, that is, the GOA unit circuit 3 is disposed in the unfolded area 10 on opposite sides of the display area 1. Meanwhile, this embodiment does not change the arrangement of the pixel units, so the size of the display area 1 remains unchanged. If only the GOA unit circuit 3 is arranged in the unfolded area 10 without adjusting its height, the same is true. In the case of the size display area 1, the size of the display panel will undesirably increase, and therefore, the height of the GOA unit circuit in the flexible GOA display panel of the present embodiment will be Being shrunk.
  • the corresponding rows of pixel units are continuously distributed in the display area 1 including the folding area 2, and therefore, the logic of each level of the GOA unit circuit is
  • the pixel units of the corresponding row may be misaligned, and are no longer at the same height as the existing arrangement shown in FIG. 2. Specifically, as shown in FIG.
  • each pixel unit includes three primary color sub-pixels 11, 12, 13, wherein the Nth row, the Nth +1 row of pixel units are located outside the folding zone 2, and the N+2th row to the N+mth row of pixel cells are located within the folding zone 2; corresponding thereto, respectively for driving the Nth row to the N+m
  • the GOA unit circuit N to GOA unit circuit N+m of the row pixel unit are located outside the folding area 2.
  • the height H of the GOA circuit unit of the present embodiment is Hp-Hf/a, where a is the display area 1.
  • the sum of the heights of the pixel units of the a row is a ⁇ Hp
  • the height Hf of the phase difference zone 1 is different.
  • each stage of the GOA unit circuit is not at the same height as the pixel unit of the corresponding row, and the output end of each level of the GOA unit circuit and the gate line of the corresponding row of pixel units The lengths of the lines are not equal.
  • the output ends of the GOA unit circuits of each stage and the gate lines of the corresponding pixel units of each row are connected by equal resistance, that is, the circuits of the GOA units of each level.
  • the line resistance between the output terminal and the gate line of the corresponding row pixel unit is equal.
  • the GOA unit circuit is not disposed in the folding area 2 in this embodiment, the etching unevenness is easily caused in the process, so that a plurality of dummy GOA unit circuits (Dummy GOA Unit) can be disposed in the folding area 2, as shown in FIG. 5. Shown to increase the etch uniformity of the GOA cell circuit region.
  • the height of the virtual GOA unit circuit is equal to the height of the GOA unit circuit.
  • a second embodiment of the present invention provides a method for fabricating a flexible GOA display panel, including:
  • a multi-level GOA unit circuit is disposed in the non-folding area on opposite sides of the display area, and each stage of the GOA unit circuit is used to drive the pixel unit of the corresponding row, and the heights of the GOA unit circuits of each level are equal and smaller than the height of the pixel unit .
  • the height of the GOA unit circuit is Hp-Hf/a, where Hf is the height of the folding area, Hp is the height of the pixel unit, and a is the number of rows of pixel units in the display area.
  • an equal resistance wiring method is adopted between the output ends of the GOA unit circuits of the respective stages and the gate lines of the pixel units of the corresponding rows.
  • the manufacturing method further includes: setting a plurality of rows of virtual GOA unit circuits in the folding area.
  • the height of the virtual GOA unit circuit is equal to the height of the GOA unit circuit.
  • the beneficial effects of the embodiment of the present invention are: redesigning the height of the GOA unit circuit, and reducing the height of the GOA circuit unit having the same height as the pixel unit, so that the GOA unit circuit distribution can avoid the folding area.
  • the output of the GOA circuit unit to the line corresponding to each row of pixel units adopts an equal resistance wiring manner, thereby minimizing the influence of the folding area on the characteristics and reliability of the entire flexible GOA panel.

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

Abstract

一种柔性GOA显示面板及其制作方法。柔性GOA显示面板包括：具有至少一折叠区（2）的显示区（1）；设置在显示区（1）内的多行像素单元；设置在显示区（1）相对两侧的非折叠区（10）内的多级GOA单元电路（3），每一级GOA单元电路（3）用于驱动对应行的像素单元；各级GOA单元电路（3）的高度相等且均小于像素单元的高度。重新设计GOA单元电路（3）的高度，将原有与像素单元的高度相同的GOA电路单元（3）的高度缩小，使得GOA单元电路分布可避开折叠区（2），同时GOA电路单元（3）输出至对应每行像素单元的线路采用等电阻配线方式，尽可能减少折叠区域对整个柔GOA面板的特性以及信赖性的影响。

Description

一种柔性GOA显示面板及其制作方法
本申请要求于2017年11月9日提交中国专利局、申请号为201711098626.0、发明名称为“一种柔性GOA显示面板及其制作方法”的中国专利申请的优先权，上述专利的全部内容通过引用结合在本申请中。
技术领域
本发明涉及屏幕显示技术领域，尤其涉及一种柔性GOA显示面板及其制作方法。
背景技术
柔性显示设备由于具有可折叠、耐冲击、便于穿戴等特点，成为显示行业研究热点。然而柔性显示面板在折叠过程中可能会损坏折叠区的电路，减少折叠区电路的寿命，造成弯折区处电路断路，影响整个柔性面板的显示效果。
如图1、图2所示，现有的柔性GOA(Gate Drive IC on Array)显示面板包括具有折叠区2＇的显示区1＇、设置在显示区1＇内的多行像素单元、设置在显示区1＇相对两侧的多级GOA单元电路3＇，各级GOA单元电路3＇与显示区1＇内的各行像素单元一一对应(每一像素单元包括三基色子像素11＇、12＇、13＇)，并且GOA单元电路3＇的高度H与像素单元的高度Hp相等。由于GOA单元电路的元器件较多，器件密度也很大，如果如图1所示将其设计在折叠区2＇内，其性能肯定会受到影响，并且还会影响到面板的使用寿命以及生产良率等。
发明内容
本发明所要解决的技术问题在于，提供一种柔性GOA显示面板及其制作方法，以避免折叠区对GOA单元电路的影响。
为了解决上述技术问题，本发明提供一种柔性GOA显示面板，包括：
具有至少一折叠区的显示区；
设置在所述显示区内的多行像素单元；
设置在所述显示区相对两侧的非折叠区内的多级GOA单元电路，每一级GOA单元电路用于驱动对应行的像素单元；
各级GOA单元电路的高度相等且均小于像素单元的高度。
其中，所述GOA单元电路的高度为Hp-Hf/a，其中，Hf为折叠区的高度，Hp为像素单元的高度，a为显示区内的像素单元的行数。
其中，各级GOA单元电路的输出端与对应行的像素单元的栅极线之间的线路电阻均相等。
其中，所述折叠区内设置有若干行虚GOA单元电路。
其中，所述虚GOA单元电路的高度与所述GOA单元电路的高度相等。
本发明还提供一种柔性GOA显示面板制作方法，包括：
在柔性基板上设置多行像素单元，形成显示区；
在柔性基板上设置折叠区；
在所述显示区相对两侧的非折叠区内设置多级GOA单元电路，每一级GOA单元电路用于驱动对应行的像素单元，各级GOA单元电路的高度相等且均小于像素单元的高度。
其中，所述GOA单元电路的高度为Hp-Hf/a，其中，Hf为折叠区的高度，Hp为像素单元的高度，a为显示区内的像素单元的行数。
其中，在各级GOA单元电路的输出端与对应行的像素单元的栅极线之间采用等电阻配线方式。
其中，所述制作方法还包括：在所述折叠区内设置若干行虚GOA单元电路。
其中，所述虚GOA单元电路的高度与所述GOA单元电路的高度相等。
本发明实施例的有益效果在于：重新设计GOA单元电路的高度，将原有与像素单元的高度相同的GOA电路单元的高度缩小，使得GOA单元电路分布可避开折叠区，同时GOA电路单元输出至对应每行像素单元的线路采用等电阻配线方式，尽可能减少折叠区域对整个柔GOA面板的特性以及信赖性的影响。
附图说明
为了更清楚地说明本发明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发明的一些实施例，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是现有柔性GOA显示面板的结构示意图。
图2是现有柔性GOA显示面板上GOA单元电路与像素排布示意图。
图3是本发明实施例一柔性GOA显示面板的结构示意图。
图4是本发明实施例一GOA显示面板上GOA单元电路与像素排布示意图。
图5是本发明实施例一GOA显示面板上GOA单元电路与像素排布的另一示意图。
图6是本发明实施例二一种柔性GOA显示面板制作方法的流程示意图。
具体实施方式
以下各实施例的说明是参考附图，用以示例本发明可以用以实施的特定实施例。
请同时参照图2、图3所示，本发明实施例一提供一种柔性GOA显示面板，包括：
具有至少一折叠区2的显示区1；
设置在显示区1内的多行像素单元；
设置在显示区1相对两侧的非折叠区10内的多级GOA单元电路3，每一级GOA单元电路用于驱动对应行的像素单元；
各级GOA单元电路的高度相等且均小于像素单元的高度。
为了减少现有柔性GOA显示面板设计中，折叠区域因应力的原因对其内GOA电路元器件的性能产生影响，进而影响到整个显示面板的使用寿命以及生产良率等，本发明实施例提出新的GOA单元电路3的排布方式，排版上避开折叠区2，即将GOA单元电路3设置在显示区1相对两侧的非折叠区10内。同时，本实施例未对像素单元的排列方式做改变，因此显示区1的大小维持不变，如果仅将GOA单元电路3排布在非折叠区10内而不对其高度做调整，则在同样大小的显示区1的情况下，显示面板的尺寸将不适宜地增大，因此，本实施例的柔性GOA显示面板中GOA单元电路的高度将 被缩小。
由于各级GOA单元电路3未分布在折叠区2内，其对应的各行像素单元则是连续分布于包括折叠区2在内的显示区1内，因此，每一级GOA单元电路在高度上与对应行的像素单元会存在错位，不再像图2所示的现有排布方式一样处于同一高度。具体如图4所示，在显示区1内设置有自第N行到第N+m行像素单元，每一像素单元包括三基色子像素11、12、13，其中，第N行、第N+1行像素单元位于折叠区2之外，第N+2行到第N+m行像素单元位于折叠区2之内；与之相对应的，分别用于驱动第N行到第N+m行像素单元的GOA单元电路N至GOA单元电路N+m均位于折叠区2之外。
假设折叠区2的高度为Hf，像素单元的高度为Hp，面板分辨率为a×b，则本实施例的GOA电路单元的高度H为Hp-Hf/a，其中a为显示区1内的像素单元的行数。从前述现有技术可知，现有GOA电路单元的高度H与像素单元的高度Hp相等，即H＝Hp；本实施例将GOA单元电路的高度缩小后，GOA电路单元的高度H改变为H＝Hp-Hf/a，即比像素单元的高度Hp缩小了Hf/a。这样，a行像素单元的高度之和为a×Hp，各级GOA单元电路的高度之和为a×H＝a×(Hp-Hf/a)＝a×Hp-Hf，二者之间正好相差折叠区1的高度Hf。
由于缩小了GOA单元电路的高度，导致每一级GOA单元电路在高度上与对应行的像素单元不处于同一高度，各级GOA单元电路的输出端与对应行像素单元的栅极线之间的线路长度不相等，为避免此不利影响，本实施例中，各级GOA单元电路的输出端与对应每行像素单元的栅极线之间采用等电阻配线方式，即各级GOA单元电路的输出端与对应行像素单元的栅极线之间的线路电阻均相等。
进一步地，由于本实施例未在折叠区2内设置GOA单元电路，在制程中容易造成刻蚀不均匀，因此可以折叠区2内设置若干行虚GOA单元电路(Dummy GOA Unit)，如图5所示，以增加GOA单元电路区域的刻蚀均匀性。该虚GOA单元电路的高度与GOA单元电路的高度相等。
请参照图6所示，相应于本发明实施例一，本发明实施例二提供一种柔性GOA显示面板制作方法，包括：
在柔性基板上设置多行像素单元，形成显示区；
在柔性基板上设置折叠区；
在所述显示区相对两侧的非折叠区内设置多级GOA单元电路，每一级GOA单元电路用于驱动对应行的像素单元，各级GOA单元电路的高度相等且均小于像素单元的高度。
其中，所述GOA单元电路的高度为Hp-Hf/a，其中，Hf为折叠区的高度，Hp为像素单元的高度，a为显示区内的像素单元的行数。
其中，在各级GOA单元电路的输出端与对应行的像素单元的栅极线之间采用等电阻配线方式。
其中，所述制作方法还包括：在所述折叠区内设置若干行虚GOA单元电路。
其中，所述虚GOA单元电路的高度与所述GOA单元电路的高度相等。
通过上述说明可知，本发明实施例的有益效果在于：重新设计GOA单元电路的高度，将原有与像素单元的高度相同的GOA电路单元的高度缩小，使得GOA单元电路分布可避开折叠区，同时GOA电路单元输出至对应每行像素单元的线路采用等电阻配线方式，尽可能减少折叠区域对整个柔GOA面板的特性以及信赖性的影响。
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。

Claims (10)

  1. 一种柔性GOA显示面板，包括：
    具有至少一折叠区的显示区；
    设置在所述显示区内的多行像素单元；
    设置在所述显示区相对两侧的非折叠区内的多级GOA单元电路，每一级GOA单元电路用于驱动对应行的像素单元；
    各级GOA单元电路的高度相等且均小于像素单元的高度。
  2. 根据权利要求1所述的柔性GOA显示面板，其中，所述GOA单元电路的高度为Hp-Hf/a，其中，Hf为折叠区的高度，Hp为像素单元的高度，a为显示区内的像素单元的行数。
  3. 根据权利要求1所述的柔性GOA显示面板，其中，各级GOA单元电路的输出端与对应行的像素单元的栅极线之间的线路电阻均相等。
  4. 根据权利要求1所述的柔性GOA显示面板，其中，所述折叠区内设置有若干行虚GOA单元电路。
  5. 根据权利要求4所述的柔性GOA显示面板，其中，所述虚GOA单元电路的高度与所述GOA单元电路的高度相等。
  6. 一种柔性GOA显示面板制作方法，包括：
    在柔性基板上设置多行像素单元，形成显示区；
    在柔性基板上设置折叠区；
    在所述显示区相对两侧的非折叠区内设置多级GOA单元电路，每一级GOA单元电路用于驱动对应行的像素单元，各级GOA单元电路的高度相等且均小于像素单元的高度。
  7. 根据权利要求6所述的制作方法，其中，所述GOA单元电路的高度为Hp-Hf/a，其中，Hf为折叠区的高度，Hp为像素单元的高度，a为显示区内的像素单元的行数。
  8. 根据权利要求6所述的制作方法，其中，在各级GOA单元电路的输出端与对应行的像素单元的栅极线之间采用等电阻配线方式。
  9. 根据权利要求6所述的制作方法，其中，还包括：在所述折叠区内设置若干行虚GOA单元电路。
  10. 根据权利要求9所述的制作方法，其中，所述虚GOA单元电路的高度与所述GOA单元电路的高度相等。
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