WO2020220466A1 - 印刷电路板及显示装置 - Google Patents

印刷电路板及显示装置 Download PDF

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Publication number
WO2020220466A1
WO2020220466A1 PCT/CN2019/094623 CN2019094623W WO2020220466A1 WO 2020220466 A1 WO2020220466 A1 WO 2020220466A1 CN 2019094623 W CN2019094623 W CN 2019094623W WO 2020220466 A1 WO2020220466 A1 WO 2020220466A1
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WO
WIPO (PCT)
Prior art keywords
signal
wiring
layer
circuit board
printed circuit
Prior art date
Application number
PCT/CN2019/094623
Other languages
English (en)
French (fr)
Inventor
肖剑锋
Original Assignee
深圳市华星光电技术有限公司
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
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US16/607,134 priority Critical patent/US20200344873A1/en
Publication of WO2020220466A1 publication Critical patent/WO2020220466A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
    • H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
    • H05K1/0224—Patterned shielding planes, ground planes or power planes

Definitions

  • the present invention relates to the field of display technology, in particular to a printed circuit board and a display device.
  • LCD Liquid Crystal Display
  • liquid crystal display devices which include a liquid crystal panel and a backlight module.
  • the working principle of the liquid crystal panel is to place liquid crystal molecules between two parallel glass substrates, and to control the direction of the liquid crystal molecules by energizing or not to refract the light from the backlight module to produce images.
  • GOA Gate Driver on Array
  • TFT Thin Film Transistor
  • the driving method has the advantages of reducing production costs and realizing the narrow frame design of the panel, and is used by a variety of displays.
  • the prior art generally inputs a GOA circuit control signal to the GOA circuit to realize the progressive scanning function of the GOA circuit.
  • the GOA circuit control signal includes a start signal and multiple clock signals. Both the start signal and the clock signal are pulse signals. The high and low potentials of the start signal and the clock signal are generally 30V and -10V.
  • the X board is mostly a printed circuit board (PCB), which includes multiple layers of mutually insulated wiring layers.
  • the GOA circuit control signal is generally also provided by the X board to the flip chip film and then input into the GOA circuit in the liquid crystal panel.
  • the existing printed circuit board as an X board includes a first wiring layer 100, a reference ground layer 200, a second wiring layer 300, and a third wiring layer 400 arranged in sequence.
  • the first wiring layer 100 is used to transmit data signals
  • the reference ground layer 200 is used to connect to the reference ground potential
  • the second wiring layer 300 is used to transmit the positive power supply voltage and GOA circuit control signals
  • the third wiring layer 400 is used For setting electronic components and output pins.
  • the GOA circuit control signals transmitted by the second wiring layer 300 are all pulse signals, they will continuously switch between high and low levels. During the level switching, the signals on the adjacent wiring layers will be affected. Interference occurs.
  • the wiring layers adjacent to the second wiring layer 300 are the reference ground layer 200 and the third wiring layer 400.
  • the reference ground layer 200 will not be affected by the level switching of the GOA signal wiring, but the third wiring layer
  • the driving signal transmitted from the layer 400 to the flip chip film will be interfered by the GOA circuit control signal, which will cause the liquid crystal display device to work unstable or not work normally, and affect the quality of the panel.
  • the purpose of the present invention is to provide a printed circuit board, which can avoid signal interference between the wiring layers in the printed circuit board, and is applied to a display device to effectively ensure the stable operation of the display device.
  • the object of the present invention is also to provide a display device, which can avoid signal interference between the wiring layers in the printed circuit board, and effectively ensure the stable operation of the display device.
  • the present invention first provides a printed circuit board, which includes a first wiring layer, a reference ground layer arranged above and insulated from the first wiring layer, and a third ground layer arranged above and insulated from the reference ground layer. Routing layer
  • the first wiring layer includes a GOA signal wiring group, a data signal wiring group, and a signal isolation wiring set on the same plane; the GOA signal wiring group and the data signal wiring group are respectively located on the signal isolation wiring On both sides.
  • the signal isolation wiring is connected to the reference ground potential.
  • the width of the signal isolation trace is greater than or equal to 0.5 mm.
  • the signal isolation trace is made of metal.
  • the signal isolation trace is made of copper.
  • the printed circuit board further includes a second wiring layer arranged between the reference ground layer and the third wiring layer and insulated from the reference ground layer and the third wiring layer, respectively, and the second wiring layer is used for transmitting the positive power supply. Voltage.
  • the GOA signal wiring group is used to transmit GOA circuit control signals; the GOA circuit control signals are pulse signals.
  • the GOA circuit control signal includes a start signal and at least one clock signal.
  • the reference ground layer is connected to a reference ground potential.
  • the present invention also provides a display device including the above-mentioned printed circuit board.
  • the printed circuit board of the present invention includes a first wiring layer, a reference ground layer arranged above and insulated from the first wiring layer, and a third wiring layer arranged above the reference ground layer and insulated from the reference ground layer ,
  • the first wiring layer includes a GOA signal wiring group, a data signal wiring group, and a signal isolation wiring set on the same plane, and the GOA signal wiring group and the data signal wiring group are located on two sides of the signal isolation wiring.
  • the signal interference between the wiring layers in the printed circuit board can be avoided, and the stable operation of the display device is effectively ensured.
  • the display device of the present invention can avoid the signal interference between the wiring layers in the printed circuit board, and effectively ensure the stable operation of the display device.
  • Fig. 1 is a schematic sectional view of a conventional printed circuit board as an X board;
  • FIG. 2 is a schematic cross-sectional view of the printed circuit board of the present invention.
  • 3 is a schematic partial top view of the junction of the GOA signal wiring group, the signal isolation wiring, and the data signal wiring group in the first wiring layer of the printed circuit board of the present invention
  • FIG. 4 is a schematic diagram of the structure of the display device of the present invention.
  • FIG. 5 is a schematic diagram of the connection between the printed circuit board and the chip on film in the display device of the present invention.
  • the printed circuit board of the present invention includes a first wiring layer 10, a reference ground layer 20 disposed above and insulated from the first wiring layer 10, and a second ground layer disposed above and insulated from the reference ground layer 20.
  • the first wiring layer 10 includes a GOA signal wiring group 11, a data signal wiring group 12 and a signal isolation wiring 13 arranged on the same plane.
  • the GOA signal wiring group 11 and the data signal wiring group 12 are respectively located on two sides of the signal isolation wiring 13.
  • the reference ground layer 20 is connected to a reference ground potential.
  • the third wiring layer 30 is used for arranging components and output pins, and is electrically connected with the flip chip film in the display device through the output pins to transmit driving signals to the flip chip film.
  • the data signal wiring group 12 is used to transmit data signals.
  • the GOA signal wiring group 11 is used to transmit a GOA circuit control signal.
  • the GOA circuit control signal is a pulse signal.
  • the GOA circuit control signal has a high level of about 30V and a low level of about -10V.
  • the GOA circuit control signal includes a start signal and at least one clock signal.
  • the signal isolation wiring 13 is connected to the reference ground potential.
  • the thickness of the signal isolation trace 13 is greater than or equal to 0.5 mm.
  • the material of the signal isolation wiring 13 is metal, and preferably, the material of the signal isolation wiring 13 is copper.
  • the printed circuit board further includes a second wiring layer 40 disposed between the reference ground layer 20 and the third wiring layer 30 and insulated from the reference ground layer 20 and the third wiring layer 30, respectively.
  • the second wiring layer 40 is used to transmit the positive voltage of the power supply.
  • the third wiring layer 30 and the flip chip 201 of the display device are electrically connected and transmit driving signals to it.
  • the first wiring layer 10 includes a GOA signal wiring group 11, a data signal wiring group 12, and a signal isolation wiring 13, which are arranged on the same plane.
  • the signal wiring group 11 and the data signal wiring group 12 are respectively located on both sides of the signal isolation wiring 13, and a reference ground layer 20 is provided above the first wiring layer 10 and a third wiring layer 30 is provided above the reference ground layer 20,
  • the third wiring layer 30 is not adjacent to the GOA signal wiring group 11 that transmits the GOA circuit control signal, and the driving signal transmitted by it will not be interfered by the GOA circuit control signal, although the reference ground layer 20 is opposite to the first wiring layer 10
  • the reference ground layer 20 since the reference ground layer 20 is connected to the reference ground potential, its potential will not be interfered by the GOA circuit control signal transmitted on the GOA signal wiring group 11.
  • the first wiring layer 10 includes The GOA signal wiring group 11, the data signal wiring group 12, and the signal isolation wiring 13 on the same plane.
  • the GOA signal wiring group 11 and the data signal wiring group 12 are located on both sides of the signal isolation wiring 13, respectively. Prevent the GOA circuit control signal transmitted by the GOA signal wiring group 11 from interfering with the data signal transmitted by the data signal wiring group 12, thereby avoiding signal interference between the wiring layers in the printed circuit board, and effectively ensuring the display device Stable work.
  • the present invention also provides a display device including the above-mentioned printed circuit board 3.
  • the display device includes a display panel 1, a plurality of flip-chip film groups 2 electrically connected to the display panel 1, and a plurality of the above-mentioned flip-chip film groups 2 electrically connected to the plurality of flip chip groups 2 respectively.
  • Each printed circuit board 3 of the chip on film group 2 includes a plurality of chip on film 201 electrically connected to the display panel 1 respectively, and each printed circuit board 3 is connected to each chip on film group 2 of the corresponding chip on film group 2
  • the thin film 201 is electrically connected.
  • the third wiring layer 30 of each printed circuit board 3 is electrically connected to the chip-on-chip film 201 in the corresponding chip-on-chip group 2 and passes through the third wiring layer 30.
  • the chip on film 201 transmits driving signals.
  • the first wiring layer 10 includes a GOA signal wiring group 11, a data signal wiring group 12, and a signal set on the same plane. Isolation wiring 13, the GOA signal wiring group 11 and data signal wiring group 12 are respectively located on both sides of the signal isolation wiring 13, and a reference ground layer 20 and a reference ground layer 20 are set above the first wiring layer 10 A third wiring layer 30 is provided.
  • the third wiring layer 30 is not adjacent to the GOA signal wiring group 11 that transmits the GOA circuit control signal, and the driving signal transmitted by it will not be interfered by the GOA circuit control signal, although it is referenced to the ground layer 20 It is adjacent to the first wiring layer 10, but because the reference ground layer 20 is connected to the reference ground potential, its potential will not be interfered by the GOA circuit control signal transmitted on the GOA signal wiring group 11. Further, due to the first A wiring layer 10 includes a GOA signal wiring group 11, a data signal wiring group 12, and a signal isolation wiring 13, which are arranged on the same plane.
  • the GOA signal wiring group 11 and the data signal wiring group 12 are respectively located in the signal isolation
  • the two sides of the wiring 13 can prevent the GOA circuit control signal transmitted by the GOA signal wiring group 11 from interfering with the data signal transmitted by the data signal wiring group 12, thereby avoiding the signal between the wiring layers in the printed circuit board Interference effectively ensures the stable operation of the display device.
  • the printed circuit board of the present invention includes a first wiring layer, a reference ground layer provided above and insulated from the first wiring layer, and a third wiring layer provided above and insulated from the reference ground layer,
  • the first wiring layer includes a GOA signal wiring group, a data signal wiring group, and a signal isolation wiring set on the same plane.
  • the GOA signal wiring group and the data signal wiring group are located on both sides of the signal isolation wiring. , Can avoid the signal interference between the wiring layers in the printed circuit board, and effectively ensure the stable operation of the display device.
  • the display device of the present invention can avoid the signal interference between the wiring layers in the printed circuit board, and effectively ensure the stable operation of the display device.

Abstract

本发明提供一种印刷电路板及显示装置。所述印刷电路板包括第一走线层、设于第一走线层上方并与其绝缘的参考地层、设于参考地层上方并与参考地层绝缘的第三走线层，所述第一走线层包括设于同一平面的GOA信号走线组、数据信号走线组及信号隔离走线，GOA信号走线组及数据信号走线组分别位于信号隔离走线的两侧，能够避免印刷电路板中各走线层之间的信号干扰，有效地保证了显示装置的稳定工作。

Description

印刷电路板及显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种印刷电路板及显示装置。
 背景技术
随着显示技术的发展，液晶显示装置（Liquid Crystal Display，LCD）等平面显示装置因具有高画质、省电、机身薄及应用范围广等优点，而被广泛的应用于手机、电视、个人数字助理、数字相机、笔记本电脑、台式计算机等各种消费性电子产品，成为显示装置中的主流。
现有市场上的液晶显示装置大部分为背光型液晶显示装置，其包括液晶面板及背光模组（backlight module）。液晶面板的工作原理是在两片平行的玻璃基板当中放置液晶分子，通过通电与否来控制液晶分子改变方向，将背光模组的光线折射出来产生画面。
GOA（Gate Driver on Array）技术即阵列基板行驱动技术，是利用薄膜晶体管（Thin Film Transistor，TFT）液晶显示器阵列制程将栅极扫描驱动电路制作在薄膜晶体管阵列基板上，以实现逐行扫描的驱动方式，具有降低生产成本和实现面板窄边框设计的优点，为多种显示器所使用。现有技术一般会向GOA电路输入GOA电路控制信号以为实现GOA电路的逐行扫描功能，GOA电路控制信号包括起始信号及多个时钟信号，起始信号及时钟信号均为脉冲信号，常用的起始信号及时钟信号的高电位及低电位一般为30V及-10V。
目前的液晶显示装置中，会在液晶面板上绑定多个覆晶薄膜（COF）然后再将两个X板（X-Board）与覆晶薄膜进行绑定连接，工作时，驱动信号通过X板传输至覆晶薄膜中从而对液晶面板进行驱动。目前，X板多为印刷电路板（PCB），其包括多层相互绝缘的走线层。在采用GOA技术的液晶显示装置中，GOA电路控制信号一般也由X板提供给覆晶薄膜进而输入液晶面板中的GOA电路中。请参阅图1，现有的作为X板的印刷电路板包括依次设置的第一走线层100、参考地层200、第二走线层300以及第三走线层400。其中，第一走线层100用于传输数据信号，参考地层200用于接入参考地电位，第二走线层300用于传输电源正电压以及GOA电路控制信号，第三走线层400用于设置电子元器件以及输出引脚。此种架构下，由于第二走线层300传输的GOA电路控制信号均为脉冲信号，会不断地进行高低电平的切换，在电平切换时会对与其相邻的走线层上的信号产生干扰，与第二走线层300相邻的走线层为参考地层200及第三走线层400，参考地层200不会受到GOA信号走线的电平切换的影响，但第三走线层400向覆晶薄膜传输的驱动信号会受到GOA电路控制信号的干扰，导致液晶显示装置工作不稳定或不能正常工作，影响面板的品质。
 技术问题
本发明的目的在于提供一种印刷电路板，能够避免印刷电路板中各走线层之间的信号干扰，应用于显示装置中能够有效保证显示装置的稳定工作。
本发明的目的还在于提供一种显示装置，能够避免印刷电路板中各走线层之间的信号干扰，有效地保证了显示装置的稳定工作。
 技术解决方案
为实现上述目的，本发明首先提供一种印刷电路板，包括第一走线层、设于第一走线层上方并与其绝缘的参考地层、设于参考地层上方并与参考地层绝缘的第三走线层；
所述第一走线层包括设于同一平面的GOA信号走线组、数据信号走线组及信号隔离走线；所述GOA信号走线组及数据信号走线组分别位于信号隔离走线的两侧。
所述信号隔离走线接入参考地电位。
所述信号隔离走线的宽度大于等于0.5mm。
所述信号隔离走线的材料为金属。
所述信号隔离走线的材料为铜。
所述印刷电路板还包括设于参考地层及第三走线层之间且分别与参考地层及第三走线层绝缘的第二走线层，所述第二走线层用于传输电源正电压。
所述GOA信号走线组用于传输GOA电路控制信号；所述GOA电路控制信号为脉冲信号。
所述GOA电路控制信号包括起始信号及至少一个时钟信号。
所述参考地层接入参考地电位。
本发明还提供一种显示装置，包括上述的印刷电路板。
 有益效果
本发明的有益效果：本发明的印刷电路板包括第一走线层、设于第一走线层上方并与其绝缘的参考地层、设于参考地层上方并与参考地层绝缘的第三走线层，所述第一走线层包括设于同一平面的GOA信号走线组、数据信号走线组及信号隔离走线，GOA信号走线组及数据信号走线组分别位于信号隔离走线的两侧，能够避免印刷电路板中各走线层之间的信号干扰，有效地保证了显示装置的稳定工作。本发明的显示装置能够避免印刷电路板中各走线层之间的信号干扰，有效地保证了显示装置的稳定工作。
 附图说明
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。
附图中，
图1为现有的一种作为X板的印刷电路板的剖视结构示意图；
图2为本发明的印刷电路板的剖视结构示意图；
图3为本发明的印刷电路板的第一走线层中的GOA信号走线组、信号隔离走线及数据信号走线组交界处的局部俯视示意图；
图4为本发明的显示装置的结构示意图；
图5为本发明的显示装置中印刷电路板与覆晶薄膜连接的示意图。
 本发明的实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图2，本发明的印刷电路板包括第一走线层10、设于第一走线层10上方并与其绝缘的参考地层20、设于参考地层20上方并与参考地层20绝缘的第三走线层30。请参阅图3，所述第一走线层10包括设于同一平面的GOA信号走线组11、数据信号走线组12及信号隔离走线13。所述GOA信号走线组11及数据信号走线组12分别位于信号隔离走线13的两侧。
具体地，所述参考地层20接入参考地电位。所述第三走线层30用于设置元器件以及输出引脚，通过输出引脚与显示装置中的覆晶薄膜进行电性连接从而向覆晶薄膜传输驱动信号。所述数据信号走线组12用于传输数据信号。所述GOA信号走线组11用于传输GOA电路控制信号，所述GOA电路控制信号为脉冲信号，所述GOA电路控制信号的高电平约为30V，低电平约为-10V。
进一步地，所述GOA电路控制信号包括起始信号及至少一个时钟信号。
具体地，所述信号隔离走线13接入参考地电位。
具体地，所述信号隔离走线13的厚度大于等于0.5mm。
具体地，所述信号隔离走线13的材料为金属，优选地，所述信号隔离走线13的材料为铜。
具体地，请参阅图2，所述印刷电路板还包括设于参考地层20及第三走线层30之间且分别与参考地层20及第三走线层30绝缘的第二走线层40。所述第二走线层40用于传输电源正电压。
需要说明的是，请结合图5，本发明的第一实施例的印刷电路板应用于显示装置中时，作为显示装置的X板，通过第三走线层30与显示装置的覆晶薄膜201电性连接并向其传输驱动信号，本申请中，设置第一走线层10 包括设于同一平面的GOA信号走线组11、数据信号走线组12及信号隔离走线13，所述GOA信号走线组11及数据信号走线组12分别位于信号隔离走线13的两侧，并在第一走线层10上方设置参考地层20及在参考地层20上方设置第三走线层30，第三走线层30不与传输GOA电路控制信号的GOA信号走线组11相邻，其传输的驱动信号不会受到GOA电路控制信号的干扰，虽然参考地层20与第一走线层10相邻，但由于参考地层20接入的是参考地电位，其电位并不会受到GOA信号走线组11上传输的GOA电路控制信号的干扰，进一步地，由于第一走线层10包括设于同一平面的GOA信号走线组11、数据信号走线组12及信号隔离走线13，所述GOA信号走线组11及数据信号走线组12分别位于信号隔离走线13的两侧，能够防止GOA信号走线组11传输的GOA电路控制信号对数据信号走线组12传输的数据信号产生干扰，从而能够避免印刷电路板中各走线层之间的信号干扰，有效地保证了显示装置的稳定工作。
请参阅图4，基于同一发明构思，本发明还提供一种显示装置，包括上述的印刷电路板3。
具体地，请参阅图4，所述显示装置包括显示面板1、分别与显示面板1电性连接的多个覆晶薄膜组2以及分别于多个覆晶薄膜组2电性连接的多个上述的印刷电路板3，每一覆晶薄膜组2包括分别与显示面板1电性连接的多个覆晶薄膜201，每一印刷电路板3与对应的覆晶薄膜组2中的每一覆晶薄膜201电性连接，请结合图5，每一印刷电路板3的第三走线层30与对应的覆晶薄膜组2中的覆晶薄膜201电性连接并通过第三走线层30向该覆晶薄膜201传输驱动信号。
需要说明的是，请结合图5，本发明的显示装置的印刷电路板3中，设置第一走线层10 包括设于同一平面的GOA信号走线组11、数据信号走线组12及信号隔离走线13，所述GOA信号走线组11及数据信号走线组12分别位于信号隔离走线13的两侧，并在第一走线层10上方设置参考地层20及在参考地层20上方设置第三走线层30，第三走线层30不与传输GOA电路控制信号的GOA信号走线组11相邻，其传输的驱动信号不会受到GOA电路控制信号的干扰，虽然参考地层20与第一走线层10相邻，但由于参考地层20接入的是参考地电位，其电位并不会受到GOA信号走线组11上传输的GOA电路控制信号的干扰，进一步地，由于第一走线层10包括设于同一平面的GOA信号走线组11、数据信号走线组12及信号隔离走线13，所述GOA信号走线组11及数据信号走线组12分别位于信号隔离走线13的两侧，能够防止GOA信号走线组11传输的GOA电路控制信号对数据信号走线组12传输的数据信号产生干扰，从而能够避免印刷电路板中各走线层之间的信号干扰，有效地保证了显示装置的稳定工作。
综上所述，本发明的印刷电路板包括第一走线层、设于第一走线层上方并与其绝缘的参考地层、设于参考地层上方并与参考地层绝缘的第三走线层，所述第一走线层包括设于同一平面的GOA信号走线组、数据信号走线组及信号隔离走线，GOA信号走线组及数据信号走线组分别位于信号隔离走线的两侧，能够避免印刷电路板中各走线层之间的信号干扰，有效地保证了显示装置的稳定工作。本发明的显示装置能够避免印刷电路板中各走线层之间的信号干扰，有效地保证了显示装置的稳定工作。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (18)

  1. 一种印刷电路板，包括第一走线层、设于第一走线层上方并与其绝缘的参考地层、设于参考地层上方并与参考地层绝缘的第三走线层；
    所述第一走线层包括设于同一平面的GOA信号走线组、数据信号走线组及信号隔离走线；所述GOA信号走线组及数据信号走线组分别位于信号隔离走线的两侧。
  2. 如权利要求1所述的印刷电路板，其中，所述信号隔离走线接入参考地电位。
  3. 如权利要求1所述的印刷电路板，其中，所述信号隔离走线的宽度大于等于0.5mm。
  4. 如权利要求1所述的印刷电路板，其中，所述信号隔离走线的材料为金属。
  5. 如权利要求4所述的印刷电路板，其中，所述信号隔离走线的材料为铜。
  6. 如权利要求1所述的印刷电路板，还包括设于参考地层及第三走线层之间且分别与参考地层及第三走线层绝缘的第二走线层，所述第二走线层用于传输电源正电压。
  7. 如权利要求1所述的印刷电路板，其中，所述GOA信号走线组用于传输GOA电路控制信号；所述GOA电路控制信号为脉冲信号。
  8. 如权利要求7所述的印刷电路板，其中，所述GOA电路控制信号包括起始信号及至少一个时钟信号。
  9. 如权利要求1所述的印刷电路板，其中，所述参考地层接入参考地电位。
  10. 一种显示装置，包括印刷电路板；
    所述印刷电路板包括第一走线层、设于第一走线层上方并与其绝缘的参考地层、设于参考地层上方并与参考地层绝缘的第三走线层；
    所述第一走线层包括设于同一平面的GOA信号走线组、数据信号走线组及信号隔离走线；所述GOA信号走线组及数据信号走线组分别位于信号隔离走线的两侧。
  11. 如权利要求10所述的显示装置，其中，所述信号隔离走线接入参考地电位。
  12. 如权利要求10所述的显示装置，其中，所述信号隔离走线的宽度大于等于0.5mm。
  13. 如权利要求10所述的显示装置，其中，所述信号隔离走线的材料为金属。
  14. 如权利要求13所述的显示装置，其中，所述信号隔离走线的材料为铜。
  15. 如权利要求10所述的显示装置，其中，所述印刷电路板还包括设于参考地层及第三走线层之间且分别与参考地层及第三走线层绝缘的第二走线层，所述第二走线层用于传输电源正电压。
  16. 如权利要求10所述的显示装置，其中，所述GOA信号走线组用于传输GOA电路控制信号；所述GOA电路控制信号为脉冲信号。
  17. 如权利要求16所述的显示装置，其中，所述GOA电路控制信号包括起始信号及至少一个时钟信号。
  18. 如权利要求10所述的显示装置，其中，所述参考地层接入参考地电位。
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