WO2018129778A1 - 一种驱动电路及显示装置 - Google Patents

一种驱动电路及显示装置 Download PDF

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Publication number
WO2018129778A1
WO2018129778A1 PCT/CN2017/073329 CN2017073329W WO2018129778A1 WO 2018129778 A1 WO2018129778 A1 WO 2018129778A1 CN 2017073329 W CN2017073329 W CN 2017073329W WO 2018129778 A1 WO2018129778 A1 WO 2018129778A1
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Prior art keywords
metal layer
fan
line
sub
main
Prior art date
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PCT/CN2017/073329
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English (en)
French (fr)
Inventor
甘启明
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Publication of WO2018129778A1 publication Critical patent/WO2018129778A1/zh
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    • 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
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a driving circuit and a display device.
  • Existing display panels typically include an array substrate and a color film substrate.
  • a plurality of data lines, a plurality of scan lines, and a plurality of pixel units defined by the data lines and the scan lines are disposed on the array substrate.
  • the border of the display panel is the distance between the edge of the glass and the display area.
  • the border is mainly by OLB (Outer Lead)
  • the Bonding area, the fan-out area, and the electrostatic circuit protection area are composed of three parts.
  • the OLB area is used to access an area of an external signal
  • the fan-out area is used to input an external input signal into the display area.
  • the electrostatic circuit protects the electronic components used to protect the display area.
  • the frame of the panel is larger, which is not conducive to the design of the narrow frame.
  • An object of the present invention is to provide a driving circuit and a display device capable of reducing the size of a panel frame.
  • the present invention provides a driving circuit including:
  • a driving chip for providing a driving signal
  • the fan-out portion for transmitting the driving signal to a display area of the display panel;
  • the fan-out portion includes: a main fan-out line and a sub-fan out line, wherein the main fan-out line is patterned by processing the first metal layer Obtained; the sub-fan outgoing line is obtained by patterning a second metal layer, and the main fan outgoing line and the sub-fan outgoing line are staggered, and both ends of the main fan outgoing line and the sub- Both ends of the fan-out line are provided with a connection end, and the connection end includes the first metal layer and the second metal layer.
  • the invention also provides a driving circuit comprising:
  • a driving chip for providing a driving signal
  • the fan-out portion for transmitting the driving signal to a display area of the display panel;
  • the fan-out portion includes: a main fan-out line and a sub-fan out line, wherein the main fan-out line is patterned by processing the first metal layer Obtained; the sub-fan outgoing line is obtained by patterning the second metal layer.
  • the main fanout line and the sub-fan out line are alternately arranged.
  • both ends of the main fan-out line and both ends of the sub-fan outgoing line are provided with a connection end, and the connection end includes the first metal layer and the second metal layer.
  • the driving circuit of the present invention when the main fan-out line is connected to the data line of the display panel, the first metal layer and the second metal layer of the connection end corresponding to the main fan-out line are electrically connected;
  • the first metal layer and the second metal layer of the connection end corresponding to the sub-fan outgoing line are electrically connected.
  • the width of the second metal layer is smaller than the width of the first metal layer.
  • the width of the main fan-out line is within a preset width range.
  • an insulating layer is disposed between the first metal layer and the second metal layer.
  • the thickness of the insulating layer is within a predetermined thickness range.
  • the thickness of the second metal layer is smaller than the thickness of the first metal layer.
  • the present invention also provides a display device comprising: a display panel and the above-described driving circuit.
  • the fan-out line of the portion formed by the first metal layer and the fan-out line of the remaining portion are formed by the second metal layer, thereby increasing the spacing between the fan-out lines in the same layer, thereby reducing the fan-out
  • the width of the area reduces the border size of the panel.
  • FIG. 1 is a schematic structural view of a conventional fan-out line.
  • FIG. 2 is a schematic structural view of a display device of the present invention.
  • Fig. 3 is a schematic structural view of a fan-out portion of the present invention.
  • Figure 4 is a plan view of the connecting end of Figure 3.
  • Figure 5 is a schematic cross-sectional view of the connecting end of Figure 4.
  • FIG. 1 is a schematic structural view of a conventional fan-out line of the present invention.
  • the existing fan-out area includes a plurality of fan-out lines 11, and both ends 12 and fan-out lines 11 of each fan-out line 11 are exposed and developed by the same metal layer.
  • the distance between the ends of each fan-out line 11 is L1.
  • FIG. 2 is a schematic structural diagram of a display device according to the present invention.
  • the driving circuit includes a driving chip 21 and a fan-out portion; wherein the driving chip 21 includes a source driving chip and a gate driving chip, the source driving chip is for providing a data signal, and the gate driving chip is for providing a scanning signal.
  • the fan-out portion includes a main fan-out line 23 and a sub-fan-out line 24 that connects the drive chip 21 and the display panel 22 for transmitting the drive signal to the display area of the display panel 22. Specifically, the fan-out portion transmits a scan signal to the scan line of the display panel 22 and transmits the data signal to the data line of the display panel 22.
  • the main fanout line 23 is obtained by patterning the first metal layer; the sub-fanout line 24 is obtained by patterning the second metal layer. That is, the main fanout line 23 and the sub-fanout line 24 are located in different metal layers.
  • the spacing between two adjacent main fan outlets or sub-fan outlets in the same layer is relatively large, and the fan-out lines are exchanged for the spacing.
  • the distance between the ends, at this time, the distance between the main fan outlet or the ends of the sub-fan outlet is L2, and L2 is smaller than L1, thereby shortening the width of the fan-out region.
  • the main fanout line 23 and the sub-fanout line 24 are staggered.
  • the first is the sub-fan outlet
  • the second is the main fan outlet
  • the third is the sub-fan outlet
  • the rest is similar. Since the main fan outlet line 23 and the sub-fan outlet line 24 are alternately arranged, the spacing between adjacent two main fan outlet lines or sub-fan outlet lines in the same layer is further increased, and the fan-out area is better shortened. width.
  • the left half of the fan-out portion is the main fan-out line 23, and the right half of the fan-out portion is the sub-fan outlet line 24.
  • the main fanout line 23 and the sub-fan outlet line 24 may be bent and arranged to exchange the width of the fan-out area.
  • both ends of the main fanout line 23 and the sub-fanout line 24 are provided with a connection end 25 including the first metal layer 251 and the second metal layer 252.
  • the second metal layer 252 is located on the first metal layer 251.
  • the material of the first metal layer 251 and the material of the second metal layer 252 may be a metal material, preferably copper, so that the impedance of the main fan outlet line or the sub-fan outlet line can be better reduced.
  • the material of the first metal layer 251 and the material of the second metal layer 252 may be the same.
  • connection end is set to a two-layer metal structure, which can improve the display panel and the main fan outlet or sub-fan outlet. Stability between connections. In addition, since it is not necessary to provide a peripheral connection line, the production cost can be reduced.
  • the width W2 of the second metal layer 252 is smaller than the width W1 of the first metal layer 251. If the widths of the two metal layers are equal, a short circuit occurs at the connection end during exposure, development or etching of the second metal layer 252, so the width of the second metal layer 252 is set smaller than the width of the first metal layer 251. It can prevent short circuits at the connection end and reduce production costs.
  • the difference between the width W1 of the first metal layer 251 and the width W2 of the second metal layer 252 is within a predetermined width range. If the difference in width between the two is small, the short-circuit at the connection end is not well prevented during exposure, development or etching. If the difference between the widths of the two is large, the size of the fan-out area is increased, thereby increasing the size of the panel.
  • the width W1 of the first metal layer 251 ranges from 6 to 8 ⁇ m.
  • the second metal layer 252 has a width W2 ranging from 1 to 6 ⁇ m, further preferably from 2 to 6 ⁇ m.
  • the width of the main fanout line 23 is within a predetermined width range.
  • the width of the sub-fan outgoing line 24 is within a predetermined width range.
  • the first metal layer 251 and the second metal layer 252 of the connection end corresponding to the main fanout line 23 are electrically connected; when the sub-fan outgoing line
  • the display line 22 is connected to the scan line of the display panel 22, the first metal layer 251 and the second metal layer 252 of the connection end corresponding to the sub-fan outgoing line 24 are electrically connected.
  • the second metal layer 252 is electrically connected to the first metal layer 251 through via holes.
  • an insulating layer 253 is disposed between the first metal layer 251 and the second metal layer 252.
  • the thickness L of the insulating layer 253 is within a predetermined thickness range.
  • the insulating layer 253 has a thickness ranging from 2000 to 6000 angstroms.
  • the material of the insulating layer 253 is SiO2 or silicon nitride. It is not conducive to reducing the RC delay because the thickness is too large or too small. It can be understood that an insulating layer 254 is also disposed on the second metal layer 252 for protecting the second metal layer 252.
  • the thickness H1 of the first metal layer 251 is greater than the thickness H2 of the second metal layer 252.
  • the fan-out line formed by the first metal layer is formed, and the fan-out line of the remaining portion is formed by the second metal layer, thereby increasing the spacing between the fan-out lines in the same layer, thereby reducing the width of the fan-out area. , reducing the border size of the panel.
  • the present invention further provides a display device.
  • the display device of the present embodiment includes a display panel 22 and a driving circuit, wherein the display panel 22 includes an array substrate, a color filter substrate, and is disposed between the array substrate and the color filter substrate.
  • a liquid crystal layer (not shown), wherein the array substrate includes data lines and scan lines and a plurality of pixel units defined by the data lines and the scan lines.
  • the driving circuit includes a driving chip 21 and a fan-out portion; wherein the driving chip 21 includes a source driving chip and a gate driving chip, the source driving chip is for providing a data signal, and the gate driving chip is for providing a scanning signal.
  • the fan-out portion includes a main fan-out line 23 and a sub-fan-out line 24 that connects the drive chip 21 and the display panel 22 for transmitting the drive signal to the display area of the display panel 22. Specifically, the fan-out portion transmits a scan signal to the scan line of the display panel 22 and transmits the data signal to the data line of the display panel 22.
  • the main fanout line 23 is obtained by patterning the first metal layer; the sub-fanout line 24 is obtained by patterning the second metal layer. That is, the main fanout line 23 and the sub-fanout line 24 are located at different layers.
  • the spacing between two adjacent main fan outlets or sub-fan outlets in the same layer is relatively large, and the fan-out lines are exchanged for the spacing.
  • the distance between the ends, at this time, the distance between the main fan outlet or the ends of the sub-fan outlet is L2, and L2 is smaller than L1, thereby shortening the width of the fan-out region.
  • the main fanout line 23 and the sub-fanout line 24 are staggered.
  • the first is the sub-fan outlet
  • the second is the main fan outlet
  • the third is the sub-fan outlet
  • the rest is similar. Since the main fan outlet line 23 and the sub-fan outlet line 24 are alternately arranged, the spacing between adjacent two main fan outlet lines or sub-fan outlet lines in the same layer is further increased, and the fan-out area is better shortened. width.
  • the left half of the fan-out portion is the main fan-out line 23, and the right half of the fan-out portion is the sub-fan outlet line 24.
  • the main fanout line 23 and the sub-fan outlet line 24 may be bent and arranged to exchange the width of the fan-out area.
  • both ends of the main fanout line 23 and the sub-fanout line 24 are provided with a connection end 25 including the first metal layer 251 and the second metal layer 252.
  • the second metal layer 252 is located on the first metal layer 251.
  • the material of the first metal layer 251 and the material of the second metal layer 252 may be a metal material, preferably copper, so that the impedance of the main fan outlet line or the sub-fan outlet line can be better reduced.
  • the material of the first metal layer 251 and the material of the second metal layer 252 may be the same.
  • connection end is set to a two-layer metal structure, which can improve the display panel from the main fan outlet line or the sub-fan outlet line. Connection stability. In addition, since it is not necessary to provide a peripheral connection line, the production cost can be reduced.
  • the width W2 of the second metal layer 252 is smaller than the width W1 of the first metal layer 251. If the widths of the two metal layers are equal, a short circuit occurs at the connection end during exposure, development or etching of the second metal layer 252, so the width of the second metal layer 252 is set smaller than the width of the first metal layer 251. It can prevent short circuits at the connection end and reduce production costs.
  • the difference between the width W1 of the first metal layer 251 and the width W2 of the second metal layer 252 is within a predetermined width range. If the difference in width between the two is small, the short-circuit at the connection end is not well prevented during exposure, development or etching. If the difference between the widths of the two is large, the size of the fan-out area is increased, thereby increasing the size of the panel.
  • the width W1 of the first metal layer 251 ranges from 6 to 8 ⁇ m.
  • the second metal layer 252 has a width W2 ranging from 1 to 6 ⁇ m, further preferably from 2 to 6 ⁇ m.
  • the width of the main fanout line 23 is within a predetermined width range.
  • the width of the sub-fan outgoing line 24 is within a predetermined width range.
  • the first metal layer 251 and the second metal layer 252 of the connection end corresponding to the main fanout line 23 are electrically connected; when the sub-fan outgoing line
  • the display line 22 is connected to the scan line of the display panel 22, the first metal layer 251 and the second metal layer 252 of the connection end corresponding to the sub-fan outgoing line 24 are electrically connected.
  • the second metal layer 252 is electrically connected to the first metal layer 251 through via holes.
  • an insulating layer 253 is disposed between the first metal layer 251 and the second metal layer 252.
  • the thickness L of the insulating layer 253 is within a predetermined thickness range.
  • the insulating layer 253 has a thickness ranging from 2000 to 6000 angstroms.
  • the material of the insulating layer 253 is SiO2 or silicon nitride. It is not conducive to reducing the RC delay because the thickness is too large or too small. It can be understood that an insulating layer 254 is also disposed on the second metal layer 252 for protecting the second metal layer 252.
  • the thickness H1 of the first metal layer 251 is greater than the thickness H2 of the second metal layer 252.
  • the fan-out line of the portion formed by the first metal layer and the fan-out line of the remaining portion are formed by the second metal layer, thereby increasing the spacing between the fan-out lines in the same layer, thereby reducing the width of the fan-out region. , reducing the border size of the panel.

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Abstract

一种驱动电路，该驱动电路包括驱动芯片（21），用于提供驱动信号；扇出部，用于将驱动信号传递到显示面板（22）的显示区域中；扇出部包括：主扇出线（23）和子扇出线（24），主扇出线（23）是通过对第一金属层（251）进行图案化处理得到的；子扇出线（24）是通过对第二金属层（252）进行图案化处理得到的。还提供了一种包括该驱动电路的显示装置。该驱动电路及显示装置能够减小面板边框的尺寸。

Description

一种驱动电路及显示装置 技术领域
本发明涉及显示器技术领域，特别是涉及一种驱动电路及显示装置。
 背景技术
随着显示面板的不断发展，面向显示面板的驱动技术也在不断地发展。现有的显示面板通常包括阵列基板和彩膜基板。在阵列基板上设置有多条数据线、多条扫描线以及由数据线和扫描线限定的多个像素单元。
显示面板的边框为玻璃边缘与显示区之间的距离。边框主要由OLB(Outer Lead Bonding)区、扇出区域以及静电电路保护区三部分组成。OLB区用于接入外部信号的区域，扇出区域用于将外部输入信号输入显示区域。静电电路保护用于保护显示区域的电子元件。
由于扇出区域占据边框较大一部分的空间，因此导致面板的边框较大，不利于窄边框的设计。
因此，有必要提供一种驱动电路及显示装置，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驱动电路及显示装置，能够减小面板边框的尺寸。
 技术解决方案
为解决上述技术问题，本发明提供一种驱动电路，其包括：
驱动芯片，用于提供驱动信号；
扇出部，用于将所述驱动信号传递到显示面板的显示区域中；所述扇出部包括：主扇出线和子扇出线，所述主扇出线是通过对第一金属层进行图案化处理得到的；所述子扇出线是通过对第二金属层进行图案化处理得到的，所述主扇出线和所述子扇出线之间交错设置，所述主扇出线的两端和所述子扇出线的两端都设置有连接端，所述连接端包括所述第一金属层和所述第二金属层。
本发明还提供一种驱动电路，其包括：
驱动芯片，用于提供驱动信号；
扇出部，用于将所述驱动信号传递到显示面板的显示区域中；所述扇出部包括：主扇出线和子扇出线，所述主扇出线是通过对第一金属层进行图案化处理得到的；所述子扇出线是通过对第二金属层进行图案化处理得到的。
在本发明的驱动电路中，所述主扇出线和所述子扇出线之间交错设置。
在本发明的驱动电路中，所述主扇出线的两端和所述子扇出线的两端都设置有连接端，所述连接端包括所述第一金属层和所述第二金属层。
在本发明的驱动电路中，当所述主扇出线与所述显示面板的数据线连接时，所述主扇出线对应的连接端的第一金属层和第二金属层电性连接；
当所述子扇出线与所述显示面板的扫描线连接时，所述子扇出线对应的连接端的第一金属层和第二金属层电性连接。
在本发明的驱动电路中，所述第二金属层的宽度小于所述第一金属层的宽度。
在本发明的驱动电路中，所述主扇出线的宽度位于预设宽度范围内。
在本发明的驱动电路中，所述第一金属层和所述第二金属层之间设置有绝缘层。
在本发明的驱动电路中，所述绝缘层的厚度位于预设厚度范围内。
在本发明的驱动电路中，所述第二金属层的厚度小于所述第一金属层的厚度。
本发明还提供一种显示装置，其包括：显示面板和上述驱动电路。
 有益效果
本发明的驱动电路及显示装置，由第一金属层形成部分的扇出线，由第二金属层形成剩余部分的扇出线，增大了同一层中扇出线之间的间距，从而缩小了扇出区域的宽度，减小了面板的边框尺寸。
附图说明
图1为现有的扇出线的结构示意图。
图2为本发明的显示装置的结构示意图。
图3为本发明的扇出部的结构示意图。
图4为图3中的连接端的俯视图。
图5为图4中的连接端的剖面示意图。
 本发明的最佳实施方式
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，图1为本发明现有的扇出线的结构示意图。
如图1所示，现有的扇出区域包括多条扇出线11，每条扇出线11的两端12和扇出线11都是由同一层金属层进行曝光、显影得到的。其中每条扇出线11两端之间的距离为L1。
请参照图2，图2为本发明显示装置的一结构示意图。
如图2所示，驱动电路包括驱动芯片21和扇出部；其中驱动芯片21包括源驱动芯片和栅驱动芯片，源驱动芯片用于提供数据信号，栅驱动芯片用于提供扫描信号。
扇出部包括主扇出线23和子扇出线24，该扇出部连接驱动芯片21和显示面板22，用于将该驱动信号传递到显示面板22的显示区域中。具体地，该扇出部将扫描信号传递至该显示面板22的扫描线中，以及将数据信号传递至该显示面板22的数据线中。
所述主扇出线23是通过对第一金属层进行图案化处理得到的；所述子扇出线24是通过对第二金属层进行图案化处理得到的。也即该主扇出线23和该子扇出线24位于不同金属层。
结合图3，由于该主扇出线23和该子扇出线24位于不同层，从而使得位于同一层中相邻两个主扇出线或者子扇出线之间的间距比较大，通过间距换取扇出线两端之间的距离，此时主扇出线或者子扇出线两端之间的距离为L2，L2小于L1，从而缩短了扇出区域的宽度。
在一实施方式中，所述主扇出线23和所述子扇出线24之间交错设置。比如图2中从左到右，第一条为子扇出线，第二条为主扇出线，第三条为子扇出线，其余与此类似。由于该主扇出线23和该子扇出线24之间交错设置，从而使得位于同一层中相邻两个主扇出线或者子扇出线之间的间距进一步增大，更好地缩短扇出区域的宽度。
在一实施方式中，扇出部的左半侧都为主扇出线23，扇出部的右半侧都为子扇出线24。具体可以将该主扇出线23和该子扇出线24弯折排列，以换取扇出区域的宽度。
结合图4，所述主扇出线23和所述子扇出线24的两端都设置有连接端25，所述连接端25包括所述第一金属层251和所述第二金属层252。该第二金属层252位于该第一金属层251上。该第一金属层251的材料与该第二金属层252的材料可以为金属材料，优选为铜，从而能够更好地减小主扇出线或者子扇出线的阻抗。该第一金属层251的材料与该第二金属层252的材料可以相同。
由于主扇出线23和子扇出线24位于不同金属层，且数据线和扫描线也位于不同金属层，因此将连接端设置为两层金属结构，可以提高显示面板与主扇出线或子扇出线之间的连接稳定性。此外，由于不需要设置外围的连接线，还可以降低生产成本。
如图4所示，该第二金属层252的宽度W2小于该第一金属层251的宽度W1。如果两层金属层的宽度相等，在对第二金属层252曝光、显影或蚀刻过程中，容易导致连接端出现短路，因此将第二金属层252的宽度设置为小于第一金属层251的宽度，可以防止连接端出现短路，从而降低生产成本。
为了更好地防止连接端出现短路，该第一金属层251的宽度W1与该第二金属层252的宽度W2之间的差值位于预设宽度范围内。如果两者宽度差值较小，在曝光、显影或蚀刻过程中，不能很好地防止连接端短路。如果两者宽度差值较大，增大扇出区域的尺寸，从而增大了面板的尺寸。
为了更好地防止连接端出现短路，该第一金属层251的宽度W1范围为6-8微米。
为了更好地防止连接端出现短路，该第二金属层252的宽度W2范围为1-6微米，进一步优选为2-6微米。
为了减小主扇出线的阻抗，所述主扇出线23的宽度位于预设宽度范围内。为了减小子扇出线的阻抗，所述子扇出线24的宽度位于预设宽度范围内。
当所述主扇出线23与所述显示面板22的数据线连接时，所述主扇出线23对应的连接端的第一金属层251和第二金属层252电性连接；当所述子扇出线24与所述显示面板22的扫描线连接时，所述子扇出线24对应的连接端的第一金属层251和第二金属层252电性连接。具体地，该第二金属层252通过过孔与第一金属层251电性连接。
结合图5，该第一金属层251与该第二金属层252之间设置有绝缘层253。
为了更好地减少阻容延迟，该绝缘层253的厚度L位于预设厚度范围内。比如，该绝缘层253的厚度范围为2000-6000埃米。其中，该绝缘层253的材料为SiO2或者氮化硅。由于厚度太大或者太小都不利于减少阻容延迟。可以理解的，在该第二金属层252上也设置有绝缘层254，用于保护第二金属层252。
为了更好地减少阻容延迟，在一实施方式中，该第一金属层251的厚度H1大于该第二金属层252的厚度H2。
本发明的驱动电路，由第一金属层形成部分的扇出线，由第二金属层形成剩余部分的扇出线，增大了同一层中扇出线之间的间距，从而缩小了扇出区域的宽度，减小了面板的边框尺寸。
本发明还提供一种显示装置，如图2所示，本实施例的显示装置包括显示面板22和驱动电路，其中显示面板22包括阵列基板、彩膜基板以及位于阵列基板和彩膜基板之间的液晶层（图中未示出），其中阵列基板包括数据线和扫描线以及由数据线和扫描线限定形成的多个像素单元。
如图2所示，驱动电路包括驱动芯片21和扇出部；其中驱动芯片21包括源驱动芯片和栅驱动芯片，源驱动芯片用于提供数据信号，栅驱动芯片用于提供扫描信号。
扇出部包括主扇出线23和子扇出线24，该扇出部连接驱动芯片21和显示面板22，用于将该驱动信号传递到显示面板22的显示区域中。具体地，该扇出部将扫描信号传递至该显示面板22的扫描线中，以及将数据信号传递至该显示面板22的数据线中。
所述主扇出线23是通过对第一金属层进行图案化处理得到的；所述子扇出线24是通过对第二金属层进行图案化处理得到的。也即该主扇出线23和该子扇出线24位于不同层。
结合图3，由于该主扇出线23和该子扇出线24位于不同层，从而使得位于同一层中相邻两个主扇出线或者子扇出线之间的间距比较大，通过间距换取扇出线两端之间的距离，此时主扇出线或者子扇出线两端之间的距离为L2，L2小于L1，从而缩短了扇出区域的宽度。
在一实施方式中，所述主扇出线23和所述子扇出线24之间交错设置。比如图2中从左到右，第一条为子扇出线，第二条为主扇出线，第三条为子扇出线，其余与此类似。由于该主扇出线23和该子扇出线24之间交错设置，从而使得位于同一层中相邻两个主扇出线或者子扇出线之间的间距进一步增大，更好地缩短扇出区域的宽度。
在一实施方式中，扇出部的左半侧都为主扇出线23，扇出部的右半侧都为子扇出线24。具体可以将该主扇出线23和该子扇出线24弯折排列，以换取扇出区域的宽度。
结合图4，所述主扇出线23和所述子扇出线24的两端都设置有连接端25，所述连接端25包括所述第一金属层251和所述第二金属层252。该第二金属层252位于该第一金属层251上。该第一金属层251的材料与该第二金属层252的材料可以为金属材料，优选为铜，从而能够更好地减小主扇出线或者子扇出线的阻抗。该第一金属层251的材料与该第二金属层252的材料可以相同。
由于主扇出线和子扇出线位于不同金属层，且数据线和扫描线也位于不同金属层，因此将连接端设置为两层金属结构，可以提高显示面板与主扇出线或子扇出线之间的连接稳定性。此外，由于不需要设置外围的连接线，还可以降低生产成本。
如图4所示，该第二金属层252的宽度W2小于该第一金属层251的宽度W1。如果两层金属层的宽度相等，在对第二金属层252曝光、显影或蚀刻过程中，容易导致连接端出现短路，因此将第二金属层252的宽度设置为小于第一金属层251的宽度，可以防止连接端出现短路，从而降低生产成本。
为了更好地防止连接端出现短路，该第一金属层251的宽度W1与该第二金属层252的宽度W2之间的差值位于预设宽度范围内。如果两者宽度差值较小，在曝光、显影或蚀刻过程中，不能很好地防止连接端短路。如果两者宽度差值较大，增大扇出区域的尺寸，从而增大了面板的尺寸。
为了更好地防止连接端出现短路，该第一金属层251的宽度W1范围为6-8微米。
为了更好地防止连接端出现短路，该第二金属层252的宽度W2范围为1-6微米，进一步优选为2-6微米。
为了减小主扇出线的阻抗，所述主扇出线23的宽度位于预设宽度范围内。为了减小子扇出线的阻抗，所述子扇出线24的宽度位于预设宽度范围内。
当所述主扇出线23与所述显示面板22的数据线连接时，所述主扇出线23对应的连接端的第一金属层251和第二金属层252电性连接；当所述子扇出线24与所述显示面板22的扫描线连接时，所述子扇出线24对应的连接端的第一金属层251和第二金属层252电性连接。具体地，该第二金属层252通过过孔与第一金属层251电性连接。
结合图5，该第一金属层251与该第二金属层252之间设置有绝缘层253。
为了更好地减少阻容延迟，该绝缘层253的厚度L位于预设厚度范围内。比如，该绝缘层253的厚度范围为2000-6000埃米。其中，该绝缘层253的材料为SiO2或者氮化硅。由于厚度太大或者太小都不利于减少阻容延迟。可以理解的，在该第二金属层252上也设置有绝缘层254，用于保护第二金属层252。
为了更好地减少阻容延迟，在一实施方式中，该第一金属层251的厚度H1大于该第二金属层252的厚度H2。
本发明的显示装置，由第一金属层形成部分的扇出线，由第二金属层形成剩余部分的扇出线，增大了同一层中扇出线之间的间距，从而缩小了扇出区域的宽度，减小了面板的边框尺寸。
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 (16)

  1. 一种驱动电路，其包括：
    驱动芯片，用于提供驱动信号；
    扇出部，用于将所述驱动信号传递到显示面板的显示区域中；所述扇出部包括：主扇出线和子扇出线，所述主扇出线是通过对第一金属层进行图案化处理得到的；所述子扇出线是通过对第二金属层进行图案化处理得到的，所述主扇出线和所述子扇出线之间交错设置，所述主扇出线的两端和所述子扇出线的两端都设置有连接端，所述连接端包括所述第一金属层和所述第二金属层。
  2. 根据权利要求1所述的驱动电路，其中当所述主扇出线与所述显示面板的数据线连接时，所述主扇出线对应的连接端的第一金属层和第二金属层电性连接；
    当所述子扇出线与所述显示面板的扫描线连接时，所述子扇出线对应的连接端的第一金属层和第二金属层电性连接。
  3. 根据权利要求2所述的驱动电路，其中所述第二金属层的宽度小于所述第一金属层的宽度。
  4. 根据权利要求1所述的驱动电路，其中所述主扇出线的宽度位于预设宽度范围内。
  5. 根据权利要求1所述的驱动电路，其中所述第一金属层和所述第二金属层之间设置有绝缘层。
  6. 根据权利要求1所述的驱动电路，其中所述绝缘层的厚度位于预设厚度范围内。
  7. 根据权利要求1所述的驱动电路，其中所述第二金属层的厚度小于所述第一金属层的厚度。
  8. 一种显示装置，其包括：显示面板和驱动电路，所述驱动电路包括：驱动芯片，用于提供驱动信号；
    扇出部，用于将所述驱动信号传递到显示面板的显示区域中；所述扇出部包括：主扇出线和子扇出线，所述主扇出线是通过对第一金属层进行图案化处理得到的；所述子扇出线是通过对第二金属层进行图案化处理得到的。
  9. 根据权利要求8所述的显示装置，其中所述主扇出线和所述子扇出线之间交错设置。
  10. 根据权利要求8所述的显示装置，其中所述主扇出线的两端和所述子扇出线的两端都设置有连接端，所述连接端包括所述第一金属层和所述第二金属层。
  11. 根据权利要求8所述的显示装置，其中当所述主扇出线与所述显示面板的数据线连接时，所述主扇出线对应的连接端的第一金属层和第二金属层电性连接；
    当所述子扇出线与所述显示面板的扫描线连接时，所述子扇出线对应的连接端的第一金属层和第二金属层电性连接。
  12. 根据权利要求11所述的显示装置，其中所述第二金属层的宽度小于所述第一金属层的宽度。
  13. 根据权利要求8所述的显示装置，其中所述主扇出线的宽度位于预设宽度范围内。
  14. 根据权利要求8所述的显示装置，其中所述第一金属层和所述第二金属层之间设置有绝缘层。
  15. 根据权利要求8所述的显示装置，其中所述绝缘层的厚度位于预设厚度范围内。
  16. 根据权利要求8所述的显示装置，其中所述第二金属层的厚度小于所述第一金属层的厚度。
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