CN111736395A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN111736395A CN111736395A CN202010541916.3A CN202010541916A CN111736395A CN 111736395 A CN111736395 A CN 111736395A CN 202010541916 A CN202010541916 A CN 202010541916A CN 111736395 A CN111736395 A CN 111736395A
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- 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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
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- 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
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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- 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
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- 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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136227—Through-hole connection of the pixel electrode to the active element through an insulation layer
Abstract
The invention discloses a display panel and a display device, wherein the display panel comprises a substrate, a first electrode layer, a first insulating layer, a second electrode layer, a second insulating layer and a third electrode layer which are sequentially arranged on the substrate, and further comprises a first grid line, a second grid line, a line changing connecting block, a common electrode line and a first low potential liner; the first electrode layer comprises a first gate line, the second electrode layer comprises a second gate line, the third electrode layer comprises a line changing connecting block, a first low-potential liner and a common potential line, and the line changing connecting block is electrically connected with the first gate line and the second gate line through via holes respectively; at least part of the first low potential liner is positioned between the wire changing connection block and the common electrode wire, and the potential of the first low potential liner is lower than that of the common electrode wire and lower than the lowest potential of the wire changing connection block. The invention can protect the area of the wire replacing connecting block in the display panel from being corroded.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
The display panel is an important component of the display device, and plays a role of providing a picture display for the display device. In the display device, a picture is generated and displayed in a display area, and a peripheral circuit is arranged in a frame area, so that the picture is not an effective picture display area. With the increasing requirements of people on the display performance and the aesthetic degree of the display device, the narrow-frame display device is the direction that people pursue more.
In order to realize a narrow frame of a display device, a double-layer wiring design of a frame area is adopted at present, and the width of the frame area is reduced through double-layer wiring. In the prior art, a display panel of a display device is provided with a common electrode line and a line changing connection block on a gate driving side. When the display panel normally works, the grid line is in a low potential state most of the time, and is in a negative potential state relative to the line changing connecting block and the common electrode line, so that a positive electrode and a negative electrode of electrochemical corrosion are formed, and water, water vapor or liquid crystal in the display device can be used as electrolyte, so that after the line changing connecting block is used as a cathode of the electrochemical corrosion and is corroded and consumed, the grid line layer is corroded, and then the phenomenon of grid line layer disconnection is caused.
Existing data show that: the corrosion disconnection of the gate driving side generally occurs in 500 to 600 hours, and there is no problem with respect to a general display device. However, in the case of a vehicle-mounted display device, since the high-temperature and high-humidity test time is generally 500 to 1000 hours, the problem of disconnection due to corrosion of the gate driving side is likely to occur.
It is also possible to adopt a method of adding a channel mask so that the gate lines are directly conducted through the channels without bridging through the line-change connection block. So that all the wires are under the passivation layer and no corrosion occurs. However, this approach not only increases the mask cost, but also affects the yield of the display device.
Therefore, it is an urgent problem in the art to provide a simple, convenient and effective anti-corrosion scheme for the gate driving side to prolong the service life of the display panel in the display device.
Disclosure of Invention
In view of the above, the present invention provides a display panel and a display device including the display panel, which solve the technical problems of the display device in the prior art that the gate driving side of the display panel has electrochemical corrosion and the service life of the display panel is shortened.
In order to solve the above technical problem, the present invention provides a display panel, which includes a substrate, and a first electrode layer, a first insulating layer, a second electrode layer, a second insulating layer, and a third electrode layer sequentially disposed on the substrate, and is characterized in that the display panel further includes a first gate line, a second gate line, a line change connection block, a common electrode line, and a first low potential pad;
the first electrode layer comprises the first gate line, the second electrode layer comprises the second gate line, the third electrode layer comprises the line change connecting block, the first low potential pad and the common potential line, and the line change connecting block is electrically connected with the first gate line and the second gate line through a through hole respectively;
at least part of the first low potential liner is positioned between the wire changing connection block and the common electrode wire, and the potential of the first low potential liner is lower than that of the common electrode wire and lower than the lowest potential of the wire changing connection block.
The invention also provides a display device which comprises the display panel.
Compared with the prior art, the display panel and the display device provided by the invention have the beneficial effects that:
(1) according to the display panel and the display device, the low-potential liner with lower potential is additionally arranged beside the wire changing connection block in the display panel, and the cathode subjected to electrochemical corrosion in the display panel is changed from the position of the wire changing connection block of the grid wire to the position of the low-potential liner with lower voltage, so that the low-potential liner with lower voltage is corroded, the area of the wire changing connection block of the grid wire is protected from being corroded, and the service life of the display panel is prolonged.
(2) According to the display panel and the display device, the low-potential liner with lower potential is additionally arranged beside the wire changing connecting block in the display panel, the cathode subjected to electrochemical corrosion is converted from the wire changing connecting block area to the low-potential liner, the double-layer wiring design of the frame area does not need to be changed, and the narrow-frame requirement of the display panel can be met while the wire changing connecting block area is protected from being corroded.
(3) According to the display panel and the display device, the low-potential liner with lower potential is additionally arranged beside the wire changing connecting block in the display panel, the cathode subjected to electrochemical corrosion is converted into the low-potential liner from the wire changing connecting block area, a mask process is not needed, the whole structure of the display panel is not needed to be changed, and on the other hand, the low-potential liner is additionally arranged beside the wire changing connecting block in the display panel, so that the process is simple, and the effect of corrosion prevention on a grid driving side can be achieved simply, conveniently and effectively.
(4) According to the display panel and the display device, the first low potential liner is additionally arranged between the wire changing connecting block and the common electrode wire, the second low potential liner is additionally arranged between the wire changing connecting block and the peripheral circuit, and the cathode subjected to electrochemical corrosion is converted into the first low potential liner and the second low potential liner, so that the corrosion condition of the wire changing connecting block in the display panel is further improved.
Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of a gate driving side of a display panel according to the prior art;
FIG. 2 is a schematic diagram of a wire-changing connection block of a display panel in the prior art;
FIG. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 4 is a top view of the display panel shown in FIG. 3 according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 6 is a top view of the display panel shown in FIG. 5 according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 8 is a schematic diagram illustrating an internal structure of the display panel shown in FIG. 7 according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a display panel according to another embodiment of the present invention;
FIG. 10 is a schematic diagram of the internal structure provided in FIG. 9 according to an embodiment of the present invention;
fig. 11 is a schematic diagram illustrating a positional relationship between a first low potential pad and a wire-change connection block according to an embodiment of the present invention;
fig. 12 is a schematic view illustrating a positional relationship between a first low potential pad and a wire-change connection block according to another embodiment of the present invention;
fig. 13 is a schematic diagram of a display device according to an embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in fig. 1, which is a schematic structural diagram of a gate driving side of a display panel in a display device in the prior art, an edge non-display pixel (also called a protection pixel) 101, a common electrode line 102, an electrostatic discharge device bar 103, an electrostatic discharge device 104, a line change connection block 105, and a gate line region 106 are sequentially disposed from a display region to a frame region. The common electrode line 102 may be a continuous conductive line, or may be a discontinuous conductive block located on the same straight line, and the common electrode line 102 is only illustrated in this figure. When the connecting block works normally, the grid line layer is corroded to cause the disconnection of the grid line layer after the connecting block is used as a cathode of electrochemical corrosion and is corroded and consumed. Referring to fig. 2, a conventional structure of a wire-changing connection block is shown, In which a display panel includes a substrate, a first electrode layer 141, a first insulating layer 142, a second electrode layer 143, a second insulating layer 144, and a third electrode layer 145, the first electrode layer 141 includes a first gate line, the second electrode layer 143 includes a second gate line, the third electrode layer 145 includes a wire-changing connection block, and the wire-changing connection block 105 included In the third electrode layer 145 is formed of Indium Tin oxide (ITO, chemical formula: In)2O3SnO2) The line change connection block is electrically connected to the first gate line of the first electrode layer 141 and the second gate line of the second electrode layer 143 through via holes on the first insulating layer 142 and the second insulating layer 144, thereby implementing a line change function of switching the gate lines from the first electrode layer 141 to the second electrode layer 143. ITO at the line change connecting block is very easily taken place electrochemical corrosion among the high temperature and high humidity experiment and is consumed, and then corrodes to the grid line layer, can lead to the risk that the broken string appears in the grid line layer, has finally shortened display panel life. Based on the above technical problem, the present application provides the following solutions.
As shown in fig. 3 and 4, fig. 3 is a schematic structural diagram of a display panel provided in this embodiment; fig. 4 is a top view of the display panel provided in fig. 3. The display panel includes: a display region 313 and a non-display region 314 surrounding the display region 313, wherein the non-display region 314 includes a first electrode layer 302, a first insulating layer 303, a second electrode layer 304, a second insulating layer 305, and a third electrode layer 306; the display panel further includes a first gate line 307, a second gate line 308, a line change connection block 309, a common electrode line 310, and a first low potential pad 311.
In some alternative embodiments, the first insulating layer 303 and the second insulating layer 305 may be formed by CVD or PVD vapor deposition of silicon oxide, silicon nitride, or the like. The gate lines are arranged in the first electrode layer and the second electrode layer, and the insulation between the first electrode layer and the second electrode layer is ensured through the first insulating layer between the first electrode layer and the second electrode layer.
The first electrode layer 302 includes a first gate line 307, the second electrode layer 304 includes a second gate line 308, the third electrode layer 306 includes a line change connection block 309, a first low potential pad 311, and a common potential line 310, and the line change connection block 309 is electrically connected to the first gate line 307 and the second gate line 308 through a via 312, respectively. The first gate line is changed to the second gate line of the second electrode layer through the via hole, and the purpose of double-layer wiring is achieved, and meanwhile the fact that conducting influence cannot be generated between the two layers is guaranteed. In some optional embodiments, the first gate lines 307 and the second gate lines 308 are alternately arranged, and the first gate lines and the second gate lines are alternately arranged in two layers of the line change, so that the problem of increasing the arrangement width of the gate lines due to the disordered arrangement of the line change gate lines can be avoided, and the narrow frame requirement of the display panel is also facilitated to a certain extent. In other optional embodiments, the second electrode layer 302 further includes third gate lines, and the second gate lines and the third gate lines respectively extend in a direction parallel to the common electrode lines and are alternately arranged in a direction perpendicular to the common electrode lines.
The line changing connecting block 309 is made of a conductive material, the first gate line 307 is changed from the first electrode layer 302 to the second gate line 308 of the second electrode layer 304 through the line changing connecting block 309, the design of double-layer wiring in a frame area of the display panel is achieved, the gate lines are arranged on the same layer, the arrangement width of the gate lines in the frame area is greatly reduced, and the effect of narrow frame of the display panel can be achieved. Alternatively, the wire-changing connection block may be a conductive connection wire, a conductive connection block such as a connection block, or may be a metal connection block. In some alternative embodiments, the wire-changing connection block is made of ito, the wire-changing connection block in this embodiment functions to change the first gate line from the first electrode layer to the second gate line of the second electrode layer, and the shape and structure of the wire-changing connection block itself are not limited as long as the structure of the wire-changing connection block can achieve the above functions.
At least a part of the first low potential pad 311 is located between the wire change connection block 309 and the common electrode line 310, the potential of the first low potential pad 311 is lower than the potential of the common electrode line 310, and the potential of the first low potential pad 311 is also lower than the lowest potential of the wire change connection block 309.
In some alternative embodiments, the potential of the first low potential pad 311 is a constant potential, and the constant potential of the first low potential pad 311 is beneficial to ensure the stability of the potential in the display panel, however, the present embodiment does not limit whether the potential of the first low potential pad 311 is a constant potential, as long as the potential of the first low potential pad 311 is lower than the potential of the common electrode line 310, and the setting manner of the potential of the first low potential pad 311 is also lower than the lowest potential of the wire change connection block 309 should be within the scope of the present embodiment.
In other alternative embodiments, the first low potential pad 311 is a conductive block, and using the conductive block as the first low potential pad 311 facilitates to place the first low potential pad 311 between the line change connection block 309 and the common electrode line 310, because there are more lines and layers in the display panel, the linear first low potential pad 311 is easy to touch other structures in the display panel, which improves the complexity of the wiring design, and the conductive block is used to place the conductive block with stronger flexibility, which reduces the complexity of the process. However, the shape of the first low potential pad 311 is not limited in this embodiment, and any arrangement manner that the potential of the first low potential pad 311 is lower than the potential of the common electrode line 310 and the potential of the first low potential pad 311 is also lower than the lowest potential of the wire change connection block 309 is within the scope of this embodiment.
In other alternative embodiments, as shown in fig. 11, a position relationship between the first low potential pad 311 and the circular shaped wire connection block 309 in this embodiment is illustrated. The pattern of the first low potential pad 311 is a closed pattern surrounding and insulated from the wire connection block 309. In the display panel, the wire changing connection block 309 is surrounded by other devices, the wire changing connection block 309 is difficult to be protected from electrochemical corrosion in all directions, and the wire changing connection block 309 can be protected from electrochemical corrosion in all directions by the surrounding first low-potential liner 311, so that the wire changing connection block 309 can be better protected. The shape of the first low potential pad 311 is not limited in this embodiment, and in alternative embodiments, the first low potential pad 311 may also be a conductive line parallel to the common potential line 310, as shown in fig. 12.
In other alternative embodiments, the common potential lines 310 may also be conductive blocks, and the design manner of the conductive blocks is favorable for the arrangement of the common potential lines 310 in the display panel, and is further favorable for reducing the complexity of the common potential lines 310 in the display panel to pass through other structures.
The first low potential liner with lower potential is arranged between the wire changing connection block and the common electrode wire, and the cathode of electrochemical corrosion in the display panel is converted into the first low potential liner from the region of the wire changing connection block, so that the first low potential liner is strongly corroded, and the region of the wire changing connection block is not corroded.
The display panel of the embodiment is particularly suitable for being used in a vehicle-mounted flat panel display and other flat panel displays with high reliability requirements, under the specification of the vehicle-mounted display, double layers of wiring can be adopted in the frame of the display panel of the embodiment, the wiring of the wiring changing connecting block is changed, the region of the wiring changing connecting block is protected from being corroded through the low potential liner (the first low potential liner and the second low potential liner), the condition that the region of the wiring changing connecting block is broken is avoided, the mask process is not required to be added, and the narrow frame requirements of the vehicle-mounted flat panel display and other flat panel displays with high reliability requirements are met to a certain extent.
As shown in fig. 5 and fig. 6, fig. 5 is a schematic structural diagram of another display panel provided in this embodiment; fig. 6 is a top view of the display panel provided in fig. 5, the display panel includes a display region 501 and a non-display region 514 surrounding the display region 513, the non-display region 514 includes a first electrode layer 502, a first insulating layer 503, a second electrode layer 504, a second insulating layer 505, and a third electrode layer 506; and the display panel further includes a first gate line 507, a second gate line 508, a wire change connection block 509, a common electrode line 510, a first low potential pad 511, and a second low potential pad 512.
The first electrode layer 502 includes a first gate line 507, the second electrode layer 504 includes a second gate line 508, the third electrode layer 506 includes a line change connection block 509, a first low potential pad 511 and a common potential line 510, and the line change connection block 509 is electrically connected to the first gate line 507 and the second gate line 508 through a via 513, respectively.
The line changing connecting block 509 is made of a conductive material, the first gate line 507 is changed from the first electrode layer 502 to the second gate line 508 of the second electrode layer 504 through the line changing connecting block 509, the design of double-layer wiring in a frame area of the display panel is achieved, the gate lines are arranged on the same layer, the arrangement width of the gate lines in the frame area is greatly reduced, and the effect of narrow frame of the display panel can be achieved. Alternatively, the wire changing connection block may be a conductive connection wire, a metal connection block, or the like.
The first low potential pad 511 is located between the wire change connection block 509 and the common electrode line 510, the potential of the first low potential pad 511 is lower than the potential of the common electrode line 510, and the potential of the first low potential pad 511 is also lower than the lowest potential of the wire change connection block 509.
The third electrode layer 506 includes a wire change connection block 509, a second low potential pad 512, and a common potential line 510, the second low potential pad 512 has a lower potential than the wire change connection block 509, and the wire change connection block 509 is located between the first low potential pad 511 and the second low potential pad 512.
In some alternative embodiments, the first and second low potential pads comprise at least one material of molybdenum, aluminum, a molybdenum aluminum stack, indium tin oxide.
The second low-potential liner is arranged beside the wire changing connection block, the wire changing connection block is located between the first low-potential liner and the second low-potential liner, the two sides of the wire changing connection block are guaranteed to be provided with lower low-potential liners, and when electrochemical corrosion occurs, the first low-potential liner and the second low-potential liner on the two sides of the wire changing connection block can replace the wire changing connection block to serve as cathodes of the electrochemical corrosion, so that the wire changing connection block is protected from the electrochemical corrosion of the two side faces. The number and position of the low potential pads around the wire-changing connection block are not limited in this embodiment, and the arrangement of the low potential pads around the wire-changing connection block and having a potential lower than that of the wire-changing connection block should be within the scope of this embodiment.
In other alternative embodiments, the second low potential pad 312 is a conductive block, and the conductive block is used as the second low potential pad 312 for easy placement, because there are many lines and layers in the display panel, the linear second low potential pad 312 is easy to touch other structures in the display panel, which improves the complexity of the wiring design, and the placement position of the conductive block has strong flexibility, which reduces the complexity of the process. However, the shape of the second low potential pad 512 is not limited in this embodiment, and any arrangement manner that the potential of the second low potential pad 512 is lower than that of the common electrode line 510 and the potential of the second low potential pad 512 is also lower than the lowest potential of the wire changing connection block 509 should be within the scope of this embodiment. In alternative embodiments, the second low potential pad 512 may also be a conductive line parallel to the common potential line 510.
As shown in fig. 7 and 8, fig. 7 is a schematic structural diagram of a display area and a frame area in another display panel provided in this embodiment; fig. 8 is a schematic view of an internal structure of the display panel provided in fig. 7. The display panel comprises a substrate 701, and a first electrode layer 702, a first insulating layer 703, a second electrode layer 704, a second insulating layer 705 and a third electrode layer 706 which are sequentially arranged on the substrate; and the display panel further includes a first gate line 707, a second gate line 708, a line change connection block 709, a common electrode line 710, a first low potential pad 711, and a second low potential pad 712.
The first electrode layer 702 includes a first gate line 707, the second electrode layer 704 includes a second gate line 708, the third electrode layer 706 includes a line change connection block 709, and the line change connection block 709 is electrically connected to the first gate line 707 and the second gate line 708 through a via 713, respectively.
The line changing connecting block 709 is made of a conductive material, the first gate line 707 is changed from the first electrode layer 702 to the second gate line 708 of the second electrode layer 704 through the line changing connecting block 709, the design of double-layer wiring in the frame area of the display panel is achieved, the gate lines are arranged on the same layer, the arrangement width of the gate lines in the frame area is greatly reduced, and the effect of narrow frame of the display panel can be achieved. Alternatively, the wire changing connection block may be a conductive connection wire, a metal connection block, or the like.
The first low potential pad 711 is located between the wire change connection block 709 and the common electrode line 710, the third electrode layer 706 includes the wire change connection block 709, the first low potential pad 711, and the common potential line 710, the potential of the first low potential pad 711 is lower than the potential of the common electrode line 710, and the potential of the first low potential pad 711 is also lower than the lowest potential of the wire change connection block 709.
The third electrode layer 706 further includes a second low potential pad 712, the potential of the second low potential pad 712 is lower than that of the wire change connection block 709, and the wire change connection block 709 is located between the first low potential pad 711 and the second low potential pad 712.
The display panel includes a display area 716 and a frame area 717 surrounding the display area 716, the frame area 717 includes a wire-changing connection block 709 and a second low potential pad 712, the frame area 717 is further provided with a peripheral circuit 718, and the second low potential pad 712 is located between the wire-changing connection block 709 and the peripheral circuit 718. In some alternative embodiments, the first electrode layer 702, the first insulating layer 703, the second electrode layer 704, the second insulating layer 705, the third electrode layer 706, the first gate line 707, the second gate line 708, the wire changing connection block 709, the common electrode line 710, the first low potential pad 711, and the second low potential pad 712 are all located in the frame area 717.
In some alternative embodiments, the peripheral circuit 718 is an esd circuit or a shift register circuit. The circuit of the display panel can be protected from being damaged by electrostatic discharge through the electrostatic discharge circuit in the display panel; for the shift register circuit, the shift register circuit is usually directly fabricated on a substrate of the display panel through a semiconductor process, and a plurality of gate signals are sequentially output through a plurality of shift registers connected in series to drive a pixel array of the display panel. Therefore, no matter the electrostatic discharge circuit, the shift register circuit or other peripheral circuits have a certain potential during operation, and the wire-changing connection block has a lower potential during operation, which causes electrochemical corrosion of the wire-changing connection block with the lower potential and the peripheral circuit with the higher potential under the condition that water, vapor or liquid crystal is used as electrolyte in the display panel, and finally causes the corrosion consumption of the wire-changing connection block area on the side close to the peripheral circuit. In the embodiment, the second low potential liner is arranged between the wire replacing connecting block and the peripheral circuit, and the second low potential liner with lower potential replaces the wire replacing connecting block to generate electrochemical corrosion, so that one side of the wire replacing connecting block close to the peripheral circuit can be conveniently and effectively protected from being consumed due to electrochemical corrosion.
As shown in fig. 9 and 10, fig. 9 is a schematic structural diagram of a display area and a frame area in another display panel provided in this embodiment; fig. 10 is a schematic view of an internal structure of the display panel provided in fig. 9. The display panel comprises a display area 1016 and a frame area 1017 surrounding the display area 1016, wherein the frame area 1017 comprises: a substrate 1001, and a first electrode layer 1002, a first insulating layer 1003, a second electrode layer 1004, a second insulating layer 1005, and a third electrode layer 1006 which are sequentially located over the substrate; the display panel further includes a first gate line 1007, a second gate line 1008, a wire change connection block 1009, a common electrode line 1010, a first low potential pad 1011, a second low potential pad 1012, a flexible circuit board 1018, and an integrated circuit 1019.
The first electrode layer 1002 includes a first gate line 1007, the second electrode layer 1004 includes a second gate line 1008, the third electrode layer 1006 includes a line change connection block 1009, a first low potential pad 1011 and a common potential line 1010, and the line change connection block 1009 is electrically connected to the first gate line 1007 and the second gate line 1008 respectively through a via 1013.
Trade line connecting block 1009 and constitute by conducting material, trade first gate line 1007 from first electrode layer 1002 line to second electrode layer 1004's second gate line 1008 through trade line connecting block 1009, realized the design of double-deck line of walking in the frame district of display panel, for all arranging the gate line at the same layer, greatly reduced the width that the gate line arranged in the frame district, and then can reach the effect that the display panel narrow frame was put. Alternatively, the wire changing connection block may be a conductive connection wire, a metal connection block, or the like.
The first low potential pad 1011 is located between the wire-changing connection block 1009 and the common electrode wire 1010, the first low potential pad 1011 and the third electrode layer 1006 include the wire-changing connection block 1009, the first low potential pad 1011 and the common potential wire 1010, the potential of the first low potential pad 1011 is lower than the potential of the common electrode wire 1010, and the potential of the first low potential pad 1011 is also lower than the lowest potential of the wire-changing connection block 1009.
The third electrode layer 1006 further comprises a second low potential pad 1012, the potential of the second low potential pad 1012 is lower than the potential of the wire change connection block 1009, and the wire change connection block 1009 is located between the first low potential pad 1011 and the second low potential pad 1012.
The first and second low potential pads 1011 and 1012 are electrically connected to the flexible circuit board 1018 or the integrated circuit 1019. In the embodiment, the first low potential liner and the second low potential liner are supplied with power through the flexible circuit board or the integrated circuit in the display panel, the normal work of the first low potential liner and the second low potential liner is ensured by utilizing the electric energy of the display panel, the structure of the display panel is not changed, the manufacturing process of rewiring is saved, and the yield of the display panel is improved.
In some alternative embodiments, the flexible circuit board 1018 and the integrated circuit 1019 may be located in any position in the display area or the frame area of the display panel, and the present embodiment does not limit the positions of the flexible circuit board 1018 and the integrated circuit 1019. Fig. 9 is a schematic illustration of only the first low potential pad being electrically connected to the flexible circuit board and the second low potential pad being electrically connected to the integrated circuit, and the form of electrically connecting the first low potential pad and the second low potential pad to the flexible circuit board or the integrated circuit is not limited. It is also possible that both the first low potential pad and the second low potential pad are electrically connected to the flexible circuit board, or both the first low potential pad and the second low potential pad are electrically connected to the integrated circuit, or the first low potential pad is electrically connected to the integrated circuit and the second low potential pad is electrically connected to the flexible circuit board.
In some alternative embodiments, the display panel includes a low potential signal line 1020, one end of the low potential signal line 1020 is connected to the first low potential pad or the second low potential pad; and the other end of the low potential signal line 1020 is electrically connected to the flexible circuit board 1018 or the integrated circuit 1019.
In other alternative embodiments, the low potential signal line 1020 is the same layer as the first electrode layer or the second electrode layer; the low potential signal line 1020 is connected to the first low potential pad or the second low potential pad through a via hole. In this embodiment, the arrangement positions of the low potential signal lines of the first low potential pad and the second low potential pad are not limited, and fig. 10 schematically illustrates that only the low potential signal line of the first low potential pad and the second electrode layer are in the same layer, and the low potential signal line of the second low potential pad and the first electrode layer are in the same layer, but in other alternative embodiments, both the low potential signal lines of the first low potential pad and the second low potential pad may be in the same layer as the first electrode layer or the second electrode layer; the low potential signal line of the first low potential pad and the first electrode layer may be disposed in the same layer, and the low potential signal line of the second low potential pad and the second electrode layer may be disposed in the same layer.
The present embodiment further provides a display apparatus, as shown in fig. 9, the display apparatus 900 includes the display panel described in the above embodiments, and the display apparatus 900 may be a mobile phone, a tablet computer, a wearable display device, and the like, as shown in fig. 13. It can be understood that, when the display panel is a liquid crystal display device, the display device 900 may further include a backlight source, a light guide plate, a liquid crystal layer, an alignment film, a protective glass, and other known structures located between the array substrate and the color film substrate, and details are not repeated herein.
According to the embodiment, the display panel and the display device of the invention have the following beneficial effects:
(1) according to the display panel and the display device, the low-potential liner with lower potential is additionally arranged beside the wire changing connection block in the display panel, and the cathode subjected to electrochemical corrosion in the display panel is changed from the position of the wire changing connection block of the grid wire to the position of the low-potential liner with lower voltage, so that the low-potential liner with lower voltage is corroded, the area of the wire changing connection block of the grid wire is protected from being corroded, and the service life of the display panel is prolonged.
(2) According to the display panel and the display device, the low-potential liner with lower potential is additionally arranged beside the wire changing connecting block in the display panel, the cathode subjected to electrochemical corrosion is converted from the wire changing connecting block area to the low-potential liner, the double-layer wiring design of the frame area does not need to be changed, and the narrow-frame requirement of the display panel can be met while the wire changing connecting block area is protected from being corroded.
(3) According to the display panel and the display device, the low-potential liner with lower potential is additionally arranged beside the wire changing connecting block in the display panel, the cathode subjected to electrochemical corrosion is converted into the low-potential liner from the wire changing connecting block area, a mask process is not needed, the whole structure of the display panel is not needed to be changed, and on the other hand, the low-potential liner is additionally arranged beside the wire changing connecting block in the display panel, so that the process is simple, and the effect of corrosion prevention on a grid driving side can be achieved simply, conveniently and effectively.
(4) According to the display panel and the display device, the first low potential liner is additionally arranged between the wire changing connecting block and the common electrode wire, the second low potential liner is additionally arranged between the wire changing connecting block and the peripheral circuit, and the cathode subjected to electrochemical corrosion is converted into the first low potential liner and the second low potential liner, so that the corrosion condition of the wire changing connecting block in the display panel is further improved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A display panel comprises a substrate, a first electrode layer, a first insulating layer, a second electrode layer, a second insulating layer and a third electrode layer, wherein the first electrode layer, the first insulating layer, the second electrode layer, the second insulating layer and the third electrode layer are sequentially arranged on the substrate;
the first electrode layer comprises the first gate line, the second electrode layer comprises the second gate line, the third electrode layer comprises the line change connecting block, the first low-potential liner and the common electrode line, and the line change connecting block is electrically connected with the first gate line and the second gate line through via holes respectively;
at least part of the first low potential liner is positioned between the wire changing connection block and the common electrode wire, and the potential of the first low potential liner is lower than that of the common electrode wire and lower than the lowest potential of the wire changing connection block;
the third electrode layer further includes a second low potential pad, a potential of the second low potential pad is lower than a potential of the wire change connection block, and the wire change connection block is located between the first low potential pad and the second low potential pad.
2. The display panel according to claim 1, wherein a potential of the first low potential pad is a constant potential.
3. The display panel according to claim 1, wherein the display panel comprises a display area and a frame area surrounding the display area, the wire change connection block and the second low potential pad are located in the frame area, the frame area is further provided with a peripheral circuit, and the second low potential pad is located between the wire change connection block and the peripheral circuit.
4. The display panel according to claim 1, further comprising a flexible circuit board and an integrated circuit, wherein the first and second low potential pads are electrically connected to the flexible circuit board or the integrated circuit.
5. The display panel according to claim 4, wherein the display panel comprises a low potential signal line, one end of the low potential signal line is connected to the first low potential pad or the second low potential pad, and the other end of the low potential signal line is electrically connected to the flexible circuit board or the integrated circuit.
6. The display panel according to claim 5, wherein the low potential signal line is in the same layer as the first electrode layer or the second electrode layer; the low potential signal line is connected to the first low potential pad or the second low potential pad through a via hole.
7. The display panel according to claim 1, wherein the first and second low potential pads comprise at least one material of molybdenum, aluminum, a molybdenum aluminum stack, indium tin oxide.
8. The display panel according to claim 1, wherein the first low potential pad is a conductive block.
9. The display panel according to claim 1, wherein the first low potential pad is a conductive line parallel to the common potential line.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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| CN113078198A (en) * | 2021-03-29 | 2021-07-06 | 京东方科技集团股份有限公司 | Display substrate and display device |
| CN113589600A (en) * | 2021-06-24 | 2021-11-02 | 上海中航光电子有限公司 | Display panel and display device |
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| CN107946319B (en) * | 2017-11-27 | 2021-01-26 | 京东方科技集团股份有限公司 | Array substrate and display device |
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| CN110018757B (en) * | 2019-03-13 | 2022-04-05 | 武汉华星光电半导体显示技术有限公司 | Touch substrate and manufacturing method |
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| CN112670270B (en) * | 2020-12-22 | 2024-01-26 | 武汉天马微电子有限公司 | Display panel and display device |
| CN113406830B (en) * | 2021-06-29 | 2023-04-21 | 上海天马微电子有限公司 | Array substrate, liquid crystal display panel and display device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106773424A (en) | 2017-05-31 |
| CN111736395B (en) | 2022-12-13 |
| CN111736398A (en) | 2020-10-02 |
| CN111736398B (en) | 2023-05-05 |
| CN106773424B (en) | 2020-08-04 |
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