CN109634003B - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN109634003B
CN109634003B CN201910129763.9A CN201910129763A CN109634003B CN 109634003 B CN109634003 B CN 109634003B CN 201910129763 A CN201910129763 A CN 201910129763A CN 109634003 B CN109634003 B CN 109634003B
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China
Prior art keywords
terminal
fan
integrated circuit
area
edge
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CN201910129763.9A
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CN109634003A (en
Inventor
孟垂玉
周秀峰
伍黄尧
沈柏平
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Xiamen Tianma Microelectronics Co Ltd
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Xiamen Tianma Microelectronics Co Ltd
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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
    • G02F1/13452—Conductors connecting driver circuitry and terminals of panels
    • 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
    • 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
    • G02F1/13456—Cell terminals located on one side of the display only

Abstract

The application provides a display panel and a display device, which are used for reducing the step width of the display panel. The display panel includes: a display area; a non-display area including an integrated circuit bonding area and a fan-out area; the signal lines comprise a first signal line and a second signal line, and the first signal line and the second signal line are both positioned in the display area; the fan-out routing comprises a first fan-out routing and a second fan-out routing, the first fan-out routing and the second fan-out routing are both located in the fan-out area, the first fan-out routing is electrically connected with the first signal line, and the second fan-out routing is electrically connected with the second signal line; the first fan-out routing is electrically connected with a first terminal of the integrated circuit binding area through a first edge, the second fan-out routing is electrically connected with a second terminal of the integrated circuit binding area through a second edge, and the first edge and the second edge are two different edges in the integrated circuit binding area.

Description

Display panel and display device
Technical Field
The application relates to the technical field of display, in particular to a display panel and a display device.
Background
When a Liquid Crystal Display (LCD) is manufactured, a Chip On Glass (COG) technology is commonly used for packaging, and a Display packaged by the COG technology is generally referred to as a COG product.
In the existing COG product, a signal line of a display area is electrically connected with a terminal (pad) of an integrated circuit binding area through a fan-out routing, an area between the display area and the integrated circuit binding area is called a fan-out area, and the fan-out routing of the fan-out area is distributed in an inverted trapezoid shape, so that the line width of the routing between the signal line in the integrated circuit binding area and the signal line in the display area is wide. Therefore, a sufficient distance needs to be left between the integrated circuit bonding region and the display region so as to be able to receive the corresponding signal line, which increases the step width of the display panel. At present, how to reduce the step width in the COG product is a problem which needs to be solved urgently.
Disclosure of Invention
The embodiment of the application provides a display panel and a display device, and is used for reducing the step width of the display panel.
In a first aspect, a display panel is provided, including:
a display area;
a non-display area including an integrated circuit bonding area and a fan-out area;
the signal lines comprise a first signal line and a second signal line, and the first signal line and the second signal line are both positioned in the display area;
the fan-out routing comprises a first fan-out routing and a second fan-out routing, the first fan-out routing and the second fan-out routing are both located in the fan-out area, the first fan-out routing is electrically connected with the first signal line, and the second fan-out routing is electrically connected with the second signal line;
the first fan-out routing is electrically connected with a first terminal of the integrated circuit binding area through a first edge, the second fan-out routing is electrically connected with a second terminal of the integrated circuit binding area through a second edge, and the first edge and the second edge are two different edges in the integrated circuit binding area.
In the above scheme, the first fan-out wiring in the fan-out wiring is electrically connected with the first terminal through the first edge, the second fan-out wiring is electrically connected with the second terminal through the second edge, and compared with the mode that all wirings in the prior art are electrically connected with the terminals through the same edge on the integrated circuit binding area, the above scheme can relatively reduce the wiring width between the fan-out wirings, and further reduce the step width of the display panel. And because the fan-out is walked the line and is connected with the terminal on the integrated circuit binding area through different limits, the first fan-out is walked the line and is walked the position of buckling of line with the second fan-out and to have some difference, that is to say, the fan-out is walked the position of buckling and is different, can avoid the fan-out to walk the stress of line too concentrated to relatively reduce the fan-out and walk the cracked possibility of line, improve the fan-out and walk the life-span of line.
In one possible design, the signal lines further include a third signal line, the fan-out traces further include a third fan-out trace;
the third signal line is located in the display area, the third fan-out wiring line is located in the fan-out area, the third fan-out wiring line is electrically connected with the third signal line, and the third fan-out wiring line passes through any one edge of the integrated circuit binding area and is electrically connected with the third terminal of the integrated circuit binding area.
In the above scheme, the display panel further includes a third signal line, a third fan-out wire and a third terminal, the third fan-out wire can be electrically connected to the third terminal through any side of the integrated circuit bonding area, and the wiring flexibility is high.
In one possible design, the first terminal and the second terminal are disposed on the integrated circuit bonding area along an extension direction of the second side.
In the above scheme, the first terminal and the second terminal are both arranged along the extending direction of the same side of the integrated circuit binding area, and the step width of the display panel can be reduced without changing the arrangement mode of the terminals in the existing integrated circuit binding area, so that the cost of the display panel can be saved.
In one possible design, the third terminal is disposed on the integrated circuit bonding area along an extension direction of the second side, and the third terminal is farther from the first side relative to the second terminal, and the first terminal is closer to the first side relative to the second terminal.
In the above scheme, the first terminal is arranged closer to the first edge, so that when the first fan-out wire passes through the first edge and is connected with the first terminal, the wiring length of the first fan-out wire can be relatively reduced. And, because the third terminal is farther away from first side relative first terminal, consequently, can avoid the first fan-out to walk the overlap of arranging between the line and the third fan-out line of walking, be favorable to improving the stability of display panel performance.
In one possible design, the first terminal is disposed on the integrated circuit bonding area along an extension direction of the first edge, and the second terminal is disposed on the integrated circuit bonding area along an extension direction of the second edge.
In the above scheme, the first terminal is arranged along the extending direction of the first edge, and when the first fan-out routing passes through the first edge and is connected with the first terminal, the required wiring length is relatively shorter, so that the wiring length of the second fan-out routing is saved. The second terminal is arranged along the extending direction of the second edge, when the second fan-out routing passes through the second edge to be connected with the second terminal, the required wiring length is relatively shorter, the wiring length of the second fan-out routing is saved, and the cost of the display panel is reduced.
In one possible design, the third terminal is disposed on the integrated circuit bonding area along an extension direction of the third side;
wherein the third edge is one edge of the integrated circuit bonding region perpendicular to the second edge, and the first edge and the third edge are two different edges of the integrated circuit bonding region.
In the above scheme, the third terminal is directly arranged along the direction of the third edge, and the first terminal, the second terminal and the third terminal are arranged along different edges of the integrated circuit bonding area, so that overlapping in the fan-out routing wiring process can be relatively reduced.
In one possible design, the second terminal is disposed on the integrated circuit bonding area along an extending direction of the second side, and the first terminal is disposed on the integrated circuit bonding area along an extending direction of the fourth side;
the fourth edge and the second edge are two parallel edges in the integrated circuit binding region.
In the above scheme, the first terminal and the second terminal are arranged along the extending direction of different sides of the integrated circuit binding area, so that enough surplus space is provided for wiring of the fan-out wiring, the first terminal is arranged along the extending direction of the fourth side, the first fan-out wiring passes through the first side and is connected to the first terminal, the first fan-out wiring can be wound to the first terminal through the space between the second side and the fourth side, and the surplus space on the integrated circuit binding area is fully utilized.
In one possible design, the third terminal is disposed on the integrated circuit bonding area along an extension direction of the fourth side, the first terminal being closer to the first side than the third terminal.
In the above solution, the third terminal is disposed along the extending direction of the fourth side, and the first terminal is disposed closer to the first side than the third terminal, on one hand, the third fan-out wire can be wound to the third terminal through the space between the second side and the fourth side, and further the remaining space on the integrated circuit bonding area is utilized; on the other hand, the first terminal is arranged closer to the first edge relative to the third terminal, so that overlapping between the first fan-out wiring and the third fan-out wiring can be avoided.
In one possible embodiment, the third fan-out line is connected to the third terminal via a third edge.
In the scheme, the first fan-out routing wire, the second fan-out routing wire and the third fan-out routing wire are connected with the terminal on the integrated circuit binding area through different edges, so that overlapping of different fan-out routing wires is avoided, and bearing pressure of the integrated circuit binding area is dispersed.
In one possible design, the display panel further includes a flexible printed circuit board, a routing accommodating area is provided between the flexible printed circuit board and the integrated circuit binding area, and the first fan-out routing is connected to the first terminal through the routing accommodating area.
In the above scheme, the first fan-out routing is wound to the first terminal by utilizing the routing accommodating area between the flexible printed circuit board and the integrated circuit binding area, so that the size of the fan-out area can be reduced, and the step width of the display panel is further reduced.
In one possible design, the third fan-out trace is connected to the third terminal through the trace accommodating area.
In the above scheme, the third fan-out wire is also connected with the third terminal through the wire accommodating area, so that the size of the fan-out area can be further reduced, and the step width of the display panel is reduced.
In one possible design, the second terminal is an output terminal, the first terminal and the third terminal are input terminals, and the first terminal and the third terminal are electrically connected to a flexible printed circuit board.
In the scheme, the positions of the input terminal and the output terminal are reasonably arranged, the design of the integrated circuit binding region can be simplified, and the length of metal wiring between the integrated circuit binding region and the flexible printed circuit board can be relatively reduced.
In one possible design, the display panel includes a plurality of the first terminals, a plurality of the second terminals, and a plurality of the third terminals; wherein the number of the first terminals is the same as the number of the third terminals.
In the above scheme, the number of the first terminals, the second terminals and the third terminals can be set arbitrarily, so that the flexibility of the setting of the display panel is improved.
In a second aspect, a display device is provided, which comprises the display panel of any one of the first aspect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a display panel in the prior art;
fig. 2A is a first schematic structural diagram of a display panel according to an embodiment of the present disclosure;
FIG. 2B is a first schematic view illustrating a non-display area of the display panel of FIG. 2A according to an embodiment of the present disclosure;
FIG. 3 is a second schematic structural diagram of a non-display area of a display panel according to an embodiment of the present disclosure;
fig. 4 is a third schematic structural diagram of a non-display area of a display panel according to an embodiment of the present disclosure;
fig. 5 is a fourth schematic structural diagram of a non-display area of a display panel according to an embodiment of the present disclosure;
fig. 6 is a fifth schematic structural view illustrating a non-display area of a display panel according to an embodiment of the present disclosure;
fig. 7 is a sixth schematic structural view of a non-display area of a display panel according to an embodiment of the present application;
fig. 8 is a seventh schematic structural diagram illustrating a non-display area of a display panel according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram eight of a non-display area of a display panel according to an embodiment of the present application;
fig. 10 is a schematic structural diagram nine of a non-display area of a display panel according to an embodiment of the present application;
fig. 11 is a schematic structural diagram of a non-display area of a display panel according to an embodiment of the present application;
fig. 12 is an eleventh schematic structural view illustrating a non-display area of a display panel according to an embodiment of the present application;
fig. 13 is a twelfth schematic structural view illustrating a non-display area of a display panel according to an embodiment of the present disclosure;
fig. 14 is a thirteenth schematic structural diagram illustrating a non-display area of a display panel according to an embodiment of the present application;
fig. 15 is a fourteenth schematic structural diagram illustrating a non-display area of a display panel according to an embodiment of the present application;
fig. 16 is a schematic structural diagram of a display device according to an embodiment of the present application.
Detailed Description
In order to better understand the technical solutions provided by the embodiments of the present application, the following detailed description is made with reference to the drawings and specific embodiments.
In order to facilitate better understanding of the technical solutions of the present application, the prior art related to the present application will be described below.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a display panel in the prior art. The display panel includes a display area 100, and signal lines (the signal lines in the display area 100 are denoted by reference numeral 101 in fig. 1) are located in the display area 100. The signal line 101 is electrically connected to one end of a fan-out trace (in fig. 1, the fan-out trace in the display region 100 is denoted by reference numeral 102), the other end of the fan-out trace 102 is electrically connected to a terminal of an integrated Circuit bonding region 103, and the integrated Circuit bonding region 103 is electrically connected to a Flexible Printed Circuit (FPC) 104.
Referring to fig. 1, the fan-out traces 102 are generally directly drawn to the terminals of the integrated circuit bonding area 103 through the display area 100, and the fan-out traces 102 are distributed in an inverted trapezoid shape as a whole. Such a configuration results in a wider line width of the traces between the integrated circuit bonding area 103 and the fan-out trace 102 in the display area 100, and further a sufficient distance a, i.e. a width of the step, needs to be left between the integrated circuit bonding area 103 and the display area 100 so as to receive the fan-out trace 102 shown in fig. 1. It can be seen that there is a problem in the prior art that the step width of the display panel is wide.
In view of the above, the present invention provides a display panel, referring to fig. 2A, the display panel includes a display area 210 and a non-display area 220, and the non-display area 220 includes an integrated circuit bonding area 230 and a fan-out area 240. The display panel further includes signal lines 250, the signal lines 250 are positioned on the display region 210, and the signal lines 250 include first signal lines 251 and second signal lines 252.
In order to more clearly illustrate the structure of the non-display area 220 of the display panel, the structure of the display panel in the embodiment of the present application is described below with reference to fig. 2B.
Referring to fig. 2B, terminals including a first terminal 231 and a second terminal 232 are disposed on the integrated circuit bonding area 230 of the non-display area 220. The fan-out area 240 of the non-display area 220 is provided with fan-out traces 260, and the fan-out traces 260 include a first fan-out trace 261 and a second fan-out trace 262.
Specifically, one end of the first fan-out trace 261 is electrically connected to the first signal line 251, and the other end of the first fan-out trace 261 is electrically connected to the first terminal 231. One end of the second fan-out trace 262 is electrically connected to the second signal line 252. The other end of the second fan-out trace 262 is electrically connected to the second terminal 232. The first fan-out trace 261 is electrically connected to the first terminal 231 through a first edge of the integrated circuit bonding area 230, and the second fan-out trace 262 is electrically connected to the second terminal 232 through a first edge of the integrated circuit bonding area 230.
The signal line may include a touch (sensor) signal line in the display panel. Generally, the ic bonding area 230 is a polygon, such as a rectangle shown in fig. 2B, and the first side and the second side are different sides of the ic bonding area 230, i.e., the first side and the second side are not one side of the ic bonding area 230. It should be noted that fig. 2B illustrates the first edge and the second edge as two mutually perpendicular edges in the integrated circuit bonding area 230, but the relative position relationship between the first edge and the second edge is not limited in practice.
In this embodiment of the present application, since the first fan-out trace 261 in the fan-out traces 260 is electrically connected to the first terminal 231 through the first edge, and the second fan-out trace 262 is electrically connected to the second terminal 232 through the second edge, compared to the prior art in which all traces are connected to the terminal through the same edge on the integrated circuit bonding region 230, the scheme in this embodiment of the present application can relatively reduce the trace width between the fan-out traces 260, and further reduce the step width of the display panel.
In one possible design, with continued reference to fig. 2B, the display panel further includes a third signal line 253 and a third fan-out line 263.
Specifically, the third signal line 253 is located in the display area 210, the third signal line 253 is located in the fan-out area 240, and the third signal line 253 is electrically connected to a third terminal on the integrated circuit bonding area 230 through a third fan-out trace 263. The third fan-out trace 263 can be connected to the third terminal 233 through any side of the integrated circuit bonding area 230.
It should be noted that fig. 2B illustrates 3 first terminals 231, 6 second terminals 232, and 3 third terminals 233, but the number of the first terminals 231, the second terminals 232, and the third terminals 233 is not limited in practice.
In this embodiment, the display panel further includes a third fan-out trace 263, and the position of the third fan-out trace 263 may be arbitrary, so as to increase the flexibility of the display panel.
In one possible design, the first terminal 231 and the second terminal 232 are disposed on the integrated circuit bonding area 230 along the extending direction of the second side.
Specifically, the first terminal 231 and the second terminal 232 are disposed on the integrated circuit bonding area 230 along the extending direction of the second edge, the first fan-out trace 261 is electrically connected to the first terminal 231 through the first edge, and the second fan-out trace 262 is electrically connected to the second terminal 232 through the second edge. One end of the first fan-out trace 261 is electrically connected to the first signal line 251, and the other end of the first fan-out trace 261 is electrically connected to the first terminal 231. One end of the second fan-out trace 262 is electrically connected to the second signal line 252, and the other end of the second fan-out trace 262 is electrically connected to the second terminal 232.
When the first and second terminals 231 and 232 are disposed on the integrated circuit bonding area 230 along the extending direction of the second side, the first and second terminals 231 and 232 may be disposed on the integrated circuit bonding area 230 in parallel along the extending direction of the second side, that is, the first and second terminals 231 and 232 are disposed in parallel with each other. Therefore, the design of the terminal is facilitated, and later-stage wiring is facilitated.
Of course, the first terminal 231 and the second terminal 232 may be disposed on the integrated circuit bonding area 230 along the extending direction of the second side, or may not be disposed in parallel, that is, the first terminal 231 and the second terminal 232 have an included angle greater than 0 and less than 180 degrees. Such an arrangement is flexible.
The extending direction is understood to be arranged along the periphery of the boundary line of the side, and may or may not be in contact with the boundary line of the side.
The first terminal 231 and the second terminal 232 are disposed along the same side of the integrated circuit bonding area 230, and in the embodiment of the present application, the first terminal 231 and the second terminal 232 are designed in the same manner as the terminals in the prior art, so that the cost of the display panel can be relatively reduced.
In the embodiment of the present application, the design of the third terminal 233 is different or the routing of the third fan-out trace 263 is different, and the structure of the display panel is also different, and the structure of the display panel that may be involved in the embodiment of the present application is described as an example below.
A first possible display panel structure is:
with reference to fig. 2B, the third terminal 233 is disposed on the integrated circuit bonding area 230 along the extending direction of the second side, and the third fan-out wire 263 is electrically connected to the third terminal 233 through the second side.
Specifically, continuing to take fig. 2B as an example, the first terminal 231 and the second terminal 232 are disposed on the integrated circuit bonding area 230 in parallel along the extending direction of the second side, and the third terminal 233 is disposed on the integrated circuit bonding area 230 along the extending direction of the second side. And, the third fan out line 263 is connected to the third terminal 233 through the second side.
In the embodiment of the present application, the second fan-out trace 261 and the third fan-out trace 263 have the same wiring manner, which is beneficial to simplifying the wiring process and improving the production efficiency of the display panel.
A second possible display panel structure is:
the first and second terminals 231 and 232 are disposed on the integrated circuit bonding area 230 along the extending direction of the second side, and the third terminal 233 is disposed on the integrated circuit bonding area 230 along the extending direction of the second side. And, the third fan out wiring 263 is electrically connected to the third terminal 233 through the third side. As for the connection of the first fan-out trace 261, the first signal line 251, the second fan-out trace 262, the second signal line 252, the second terminal 232 and the first terminal 231, reference may be made to the foregoing discussion, and the description thereof is omitted.
The first terminal 231 may be disposed farther from the first side than the third terminal 233, and the first terminal 231 may be disposed closer to the first side than the third terminal 233, which will be described separately below.
A second possible structure of the display panel is specifically as follows:
referring to fig. 3, the first terminal 231 is disposed relatively farther from the first side than the third terminal 233.
Specifically, the first fan-out trace 261 and the third fan-out trace 263 are overlapped, and at this time, the first fan-out trace 261 and the third fan-out trace 263 may be disposed in different layers. The different layer is provided, for example, with an insulating layer in the overlapping region. Through the different-layer arrangement, the influence of the overlapping of the first fan-out routing line 261 and the third fan-out routing line 263 on the normal use of the display panel is avoided.
It should be noted that, in fig. 3, for convenience of clearly showing the positions of the fan-out traces 260, the number of the first fan-out trace 261 and the third fan-out trace 263 is taken as one in fig. 3 as an example, but the number of the first fan-out trace 261 and the third fan-out trace 263 is not limited in practice.
A second possible structure of the display panel is specifically:
referring to fig. 4, the first terminal 231 may be disposed closer to the first side than the third terminal 233, and the first terminal 231 is closer to the first side than the second terminal 232, and the third terminal 233 is closer to the third side than the second terminal 232.
In the arrangement manner in the embodiment of the present application, the overlapping situation of the first fan-out routing line 261 and the third fan-out routing line 263 is avoided, and the wiring process can be relatively simplified. The third side is a side of the integrated circuit bonding region 230 that is perpendicular to the second side and is different from the first side.
In the embodiment shown in fig. 3 or 4, since the first terminal 231, the second terminal 232, and the third terminal 233 are all disposed in the extending direction of the second side, the first fan-out trace 261 may be connected to the first terminal 231 through the first side, the second fan-out trace 262 may be connected to the second terminal 232 through the second side, and the third fan-out trace 263 may be connected to the third terminal 233 through the third side, so that the fan-out trace of the display panel has good symmetry. On one hand, the fan-out routing 260 of the display panel has better symmetry, the bearing force corresponding to each area of the display panel is uniform, and the structural stability of the display panel is better; on the other hand, the resistance of the fan-out traces 260 in each region on the display panel is closer, so that the display brightness of the display panel can be more uniform.
A third possible display panel structure is:
the first and second terminals 231 and 232 are disposed on the integrated circuit bonding region 230 along an extending direction of the second side, and the third terminal 233 is disposed on the integrated circuit bonding region 230 along an extending direction of the first, third, or fourth side.
Specifically, the connection of the first fan-out trace 261, the first signal line 251, the second fan-out trace 262, the second signal line 252, the second terminal 232 and the first terminal 231 may refer to the foregoing discussion, and is not described herein again. The third fan-out trace 263 can be electrically connected to the third terminal 233 through either side.
Wherein the fourth side is a side of the integrated circuit bonding area 230 that is parallel to the second side.
In the embodiment of the present application, the third terminal 233 is disposed along the extending direction of the sides except the second side, and the load-bearing pressure in the extending direction of the second side can be reduced.
As an example, in any of the embodiments shown in fig. 2A to 4, the terminal on the second side of the integrated circuit bonding area 230 is an output terminal, and an input terminal corresponding to the terminal on the second side is further disposed on the fourth side of the integrated circuit bonding area 230. The display panel further includes a flexible printed circuit board (not shown in fig. 2A to 4), the input terminal is electrically connected to the flexible printed circuit board, and the fan-out trace is not connected to the input terminal. After the integrated circuit is crimped to the integrated circuit bonding area 230, there is an electrical connection between the input terminal and the output terminal through traces inside the integrated circuit. The signals transmitted to the display region 210 are generally transmitted to the input terminal through the flexible printed circuit board, then transmitted to the output terminal through the input terminal and the wiring inside the integrated circuit, and transmitted to the display region 210 through the output terminal.
In one possible design, the first terminal 231 is disposed on the integrated circuit bonding area 230 along the extending direction of the first side, and the second terminal 232 is disposed on the integrated circuit bonding area 230 along the extending direction of the second side.
Specifically, the connection of the first fan-out trace 261, the first signal line 251, one end of the second fan-out trace 262, the second signal line 252, the second terminal 232, and the first terminal 231 may refer to the foregoing discussion, and is not described herein again.
The following is an explanation of a structure of a display panel to which embodiments of the present application may relate.
The first method comprises the following steps:
the first terminal 231 is disposed on the integrated circuit bonding area 230 along an extending direction of the first side, and the second terminal 232 is disposed on the integrated circuit bonding area 230 along an extending direction of the second side. The third terminal 233 is disposed on the integrated circuit bonding area 230 along an extending direction of the second side.
Specifically, referring to fig. 5, the connection of the first fan-out trace 261, the first signal line 251, the second fan-out trace 262, the second signal line 252, the second terminal 232 and the first terminal 231 may refer to the content discussed above, and is not described herein again. The third terminal 233 is disposed on the integrated circuit bonding area 230 along an extending direction of the second side, and the third fan-out trace 263 is electrically connected to the third terminal 233 of the integrated circuit bonding area 230 through the second side.
In the embodiment of the present application, the third fan-out trace 263 is arranged in a manner similar to that of the first fan-out trace 261, which can facilitate simplification of the wiring process.
Alternatively, referring to fig. 6, the third terminal 233 is disposed on the integrated circuit bonding area 230 along the extending direction of the second side, and the third fan-out trace 263 may be electrically connected to the third terminal 233 of the integrated circuit bonding area 230 through the third side. The third side can refer to the content discussed above and will not be described here.
Further, in the embodiment shown in fig. 5 or 6, in order to minimize the wiring length of the fan-out trace 260, the third terminal 233 may be closer to the third side than the second terminal 232.
And the second method comprises the following steps:
the first terminal 231 is disposed on the integrated circuit bonding area 230 along an extending direction of the first side, and the second terminal 232 is disposed on the integrated circuit bonding area 230 along an extending direction of the second side. The third terminal 233 is disposed on the integrated circuit bonding area 230 along an extending direction of the third side or the fourth side.
Specifically, referring to fig. 7, the third terminal 233 is disposed on the integrated circuit bonding area 230 along the extending direction of the third side, and the third fan-out trace 263 can be electrically connected to the third terminal 233 of the integrated circuit bonding area 230 through the third side. The third side can refer to the previous discussion and is not described in detail herein.
Of course, the third fan-out trace 263 can be electrically connected to the third terminal 233 of the integrated circuit bonding area 230 through the fourth side.
In the embodiment shown in fig. 5, 6 or 7, the first fan-out trace 261 and the second fan-out trace 262 are connected to the terminals of the integrated circuit bonding area 230 through different edges, which can relatively reduce the trace width required by the fan-out trace 260, and thus reduce the step width of the display panel. Moreover, since the first terminal 231 is disposed on the first edge, the first fan-out trace 261 which is relatively short can be used to electrically connect with the first terminal 231, and the consumption of the fan-out trace 260 can be saved.
In the embodiment shown in any one of fig. 5 to 7, the display panel further includes a flexible printed circuit board (not shown in fig. 5 to 7), the first terminal 231, the second terminal 232 and the third terminal 233 on the integrated circuit bonding area 230 are all output terminals, and an input terminal is further disposed on the fourth side of the integrated circuit bonding area 230. The input terminal is electrically connected with the flexible printed circuit board, and the fan-out wiring is not connected with the input terminal. After the integrated circuit is crimped to the integrated circuit bonding area 230, there is an electrical connection between the input terminal and the output terminal through traces inside the integrated circuit. The signals transmitted to the display region 210 are generally transmitted to the input terminal through the flexible printed circuit board, then transmitted to the output terminal through the input terminal and the wiring inside the integrated circuit, and transmitted to the display region 210 through the output terminal.
In one possible design, the first terminal 231 is disposed on the integrated circuit bonding area 230 along the extending direction of the fourth side, and the second terminal 232 is disposed on the integrated circuit bonding area 230 along the extending direction of the second side.
Specifically, the connection of the first fan-out trace 261, the first signal line 251, the second fan-out trace 262, the second signal line 252, the second terminal 232 and the first terminal 231 may refer to the foregoing discussion, and is not described herein again. The fourth side can refer to the content discussed above and will not be described in detail here.
The following is an explanation of a structure of a display panel to which embodiments of the present application may relate.
Referring to fig. 8, the first fan-out trace 261 passes through the first edge and then passes through other regions of the integrated circuit bonding area 230 to be electrically connected to the first terminal 231. The second fan-out trace 262 is electrically connected to the second terminal 232 of the integrated circuit bonding area 230 via the second edge. The third fan-out trace 263 is electrically connected to the third terminal through the second side. The other area refers to a remaining area between the second edge and the fourth edge.
Alternatively, referring to fig. 9, the third terminal 233 is disposed on a third side, and the third fan-out trace 263 may be connected to the third terminal 233 through the third side.
Alternatively, referring to fig. 10, the third terminal 233 is disposed on the fourth side, and the third fan-out trace 263 passes through the third side and is connected to the third terminal 233. In the embodiment shown in fig. 10, since the first fan-out trace 261 and the third fan-out trace 263 are symmetrically disposed, the stability of the display panel can be improved.
As an embodiment, in the embodiment described in any of fig. 8 to 10, the terminals on the second side are output terminals, the terminals on the fourth side are input terminals, and after the integrated circuit is pressed to the integrated circuit bonding area 230, the input terminals on the fourth side not connected with the fan-out trace 260 are electrically connected with the output terminals connected with the fan-out trace 260 on the second side through traces inside the integrated circuit. The fourth side can refer to the above discussion and will not be described in detail here.
As an embodiment, the display panel further includes a flexible printed circuit board (not shown in fig. 8 to 10), the first terminal 231 and the third terminal 233 on the integrated circuit bonding area 230 are input terminals, and the second terminal 232 is an output terminal. The flexible printed circuit board is connected to the input terminal, and after the integrated circuit is pressed to the integrated circuit bonding area 230, the flexible printed circuit board is electrically connected to the output terminal connected to the fan-out wire 260 through the input terminal not connected to the fan-out wire 260 and the wire inside the integrated circuit. The signal transmitted to the display region 210 is generally transmitted to the input terminal through the flexible printed circuit board, then transmitted to the output terminal through the input terminal and the wiring inside the integrated circuit, and transmitted to the display region 210 through the output terminal, or directly transmitted to the display region 210 through the input terminal.
As an embodiment, in the embodiment shown in any one of fig. 8 to 10, the first terminal 231, the second terminal 232 and the third terminal 233 on the integrated circuit bonding area 230 are all output terminals, and an input terminal is further disposed on the fourth side. The input terminal is electrically connected with the flexible printed circuit board, and the fan-out wiring is not connected with the input terminal. After the integrated circuit is crimped to the integrated circuit bonding area 230, there is an electrical connection between the input terminal and the output terminal through traces inside the integrated circuit. The signals transmitted to the display region 210 are generally transmitted to the input terminal through the flexible printed circuit board, then transmitted to the output terminal through the input terminal and the wiring inside the integrated circuit, and transmitted to the display region 210 through the output terminal.
In the embodiments shown in fig. 8 to 10 described above, since the first terminal 231 is disposed on the fourth side, the first fan-out routing 261 may be routed to the first terminal 231 through the remaining space between the second side and the fourth side, and the step width of the display panel may be further reduced.
In a possible design, the display panel further includes a flexible printed circuit board 1101, a routing accommodating area 1102 is provided between the flexible printed circuit board 1101 and the integrated circuit binding area 230, and the first fan-out routing 261 sequentially passes through the routing accommodating area 1102 and the first edge and then is connected to the first terminal 231.
In the embodiment of the present application, the first setting mode may be specifically divided into two setting modes, where the first side and the second side are two sides parallel to each other; in a second arrangement, the first side and the second side are perpendicular to each other, and the two cases will be described in detail with reference to the drawings.
In a first arrangement, the first side and the second side are two sides parallel to each other:
specifically, referring to fig. 11, the third terminal 233 is disposed in the extending direction of the second side, and the third fan-out line 263 passes through the second side and is connected to the third terminal 233.
As an example, the second side in fig. 11 is provided with an output terminal, and the first side is provided with an input terminal. The first terminal 231 is an input terminal, and the second terminal 232 and the third terminal 233 are output terminals. After the integrated circuit is bonded to the integrated circuit bonding area 230, the input terminal on the first side that is not connected to the fan-out trace 260 is electrically connected to the output terminal on the second side that is connected to the fan-out trace 260 through the trace inside the integrated circuit.
Alternatively, referring to fig. 12, the third terminal 233 is disposed in the extending direction of the third side, and the third fan out line 263 passes through the third side and is connected to the third terminal 233.
As an example, the second side in fig. 12 is provided with an output terminal, and the first side is provided with an input terminal. The first terminal 231 is an input terminal, and the second terminal 232 is an output terminal. After the integrated circuit is bonded to the integrated circuit bonding area 230, the input terminals on the first side that are not connected to the fan-out traces are electrically connected to the output terminals on the second side that are connected to the fan-out traces 260 through traces inside the integrated circuit.
Alternatively, referring to fig. 13, the third terminal 233 is disposed in the extending direction of the first side, and the third terminal 233 is connected to the third terminal 233 through the first side.
As an example, the second side in fig. 13 is provided with an output terminal, and the first side is provided with an input terminal. The first terminal 231 is an input terminal, and the third terminal 233 and the second terminal 232 are output terminals. After the integrated circuit is bonded to the integrated circuit bonding area 230, the input terminal on the first side that is not connected to the fan-out trace 260 is electrically connected to the output terminal on the second side that is connected to the fan-out trace 260 through the trace inside the integrated circuit.
Referring to fig. 14, the third terminal 233 is disposed in the extending direction of the second side, and the third fan-out trace 263 is electrically connected to the third terminal 233 through the second side. The first terminal 231 is disposed on the fourth side, and the first fan-out trace 261 passes through the trace accommodating area 1102, passes through the first side, and is electrically connected to the first terminal 231.
As an example, the second side in fig. 14 is provided with an output terminal, and the first side is provided with an input terminal. The third terminal 233 and the second terminal 232 are output terminals. After the integrated circuit is bonded to the integrated circuit bonding area 230, the input terminal on the first side that is not connected to the fan-out trace 260 is electrically connected to the output terminal on the second side that is connected to the fan-out trace 260 through the trace inside the integrated circuit.
It should be noted that in any of the embodiments shown in fig. 11 to 14, the fourth side is a side perpendicular to the second side, and is a different side from the third side.
In a second arrangement, the first side and the second side are two sides perpendicular to each other:
referring to fig. 15, the third terminal 233 is disposed in the extending direction of the second side, and the third fan-out wiring 263 is electrically connected to the third terminal 233 through the second side. The first terminal 231 is disposed on the fourth side, and the first fan-out trace 261 passes through the first side, passes through the trace accommodating area 1102, and is electrically connected to the first terminal 231.
It should be noted that in the embodiment shown in fig. 15, the fourth side is a side parallel to the second side.
As an example, an output terminal is provided on the second side and an input terminal is provided on the fourth side in fig. 15. The third terminal 233 and the second terminal 232 are output terminals, and the first terminal 231 is an input terminal. After the integrated circuit is bonded to the integrated circuit bonding area 230, the input terminal on the fourth side not connected to the fan-out trace 260 is electrically connected to the output terminal on the second side connected to the fan-out trace 260 through the trace inside the integrated circuit.
As an embodiment, in the display panel shown in any one of fig. 11 to fig. 15, there is an electrical connection between the flexible printed circuit board 1101 and the integrated circuit bonding area 230, for example, the flexible printed circuit board 1101 and the input terminal are connected by a metal trace. After the integrated circuit is bonded to the integrated circuit bonding area 230, the input terminals not connected to the fan-out traces are electrically connected to the output terminals connected to the fan-out traces 260 through the traces inside the integrated circuit. The signals transmitted to the display region 210 are generally transmitted to the input terminal through the flexible printed circuit 1101, then transmitted to the output terminal through the input terminal and the wiring inside the integrated circuit, and transmitted to the display region 210 through the output terminal, or directly transmitted to the display region 210 through the input terminal.
Since the metal trace may overlap with the fan-out trace 260 in the trace accommodating area 1102, the metal trace and the fan-out trace 260 may be disposed in different layers, so as to avoid the overlap between the metal trace and the fan-out trace 260.
Specifically, an insulating layer can be arranged between the metal wire and the fan-out wire 260, so that the different-layer arrangement is realized, and the mutual interference between the metal wire and the fan-out wire 260 is avoided.
As an embodiment, in the display panel shown in any one of fig. 11 to 15, the first terminal 231, the second terminal 232, and the third terminal 233 may also be output terminals, an input terminal is further disposed on the integrated circuit bonding area 230 (for example, on the first side of fig. 11 to 14, on the fourth side of fig. 15), the input terminal is electrically connected to the flexible printed circuit board 1101, and the fan-out trace is not connected to the input terminal. After the integrated circuit is crimped to the integrated circuit bonding area 230, there is an electrical connection between the input terminal and the output terminal through traces inside the integrated circuit. The signals transmitted to the display area are generally transmitted to the input terminal through the flexible printed circuit 1101, then transmitted to the output terminal through the input terminal and the wiring inside the integrated circuit, and transmitted to the display area through the output terminal.
In a possible design, the number of the first terminals 231, the number of the third terminals 233, and the number of the second terminals 232 may be multiple in any of the above embodiments.
Specifically, the number of the first terminals 231 and the number of the third terminals 233 may be the same.
Further, when the number of the first terminals 231 is plural, every two first terminals 231 may be arranged at a preset first pitch. When the number of the second terminals 232 is plural, every two second terminals 232 may be arranged at a preset second pitch. When the number of the third terminals 233 is plural, every two third terminals 233 may be arranged at a preset third interval. The preset first interval, the preset second interval and the preset third interval may be the same or different, and are not limited in this document.
Based on the same inventive concept, an embodiment of the present application further provides a display device, please refer to fig. 16, and the display device 1600 includes the display panel discussed in any of the embodiments above. The display device 1600 may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. Other essential components of the display device 1600 should be understood by those skilled in the art, and are not described herein nor should they be considered limiting of the present application. The display device 1600 can be implemented in the embodiments of the display panel, and repeated descriptions are omitted.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (9)

1. A display panel, comprising:
a display area;
a non-display area including an integrated circuit bonding area and a fan-out area;
the signal lines comprise a first signal line and a second signal line, and the first signal line and the second signal line are both positioned in the display area;
the fan-out routing comprises a first fan-out routing and a second fan-out routing, the first fan-out routing and the second fan-out routing are both located in the fan-out area, the first fan-out routing is electrically connected with the first signal line, and the second fan-out routing is electrically connected with the second signal line;
a flexible printed circuit board having a wire receiving area between the flexible printed circuit board and the integrated circuit bonding area, the first fan-out wire being connected to a first terminal through the wire receiving area;
wherein the first fan-out trace is electrically connected to a first terminal of the ic bonding area via a first edge, the second fan-out trace is electrically connected to a second terminal of the ic bonding area via a second edge, the first edge and the second edge are two different edges of the ic bonding area, the first terminal is disposed on the ic bonding area along an extending direction of the first edge, the second terminal is disposed on the ic bonding area along an extending direction of the second edge, or the second terminal is disposed on the ic bonding area along an extending direction of the second edge, the first terminal is disposed on the ic bonding area along an extending direction of a fourth edge, the fourth edge and the second edge are two parallel edges of the ic bonding area, and the second terminal is an output terminal, the first terminal is an input terminal, the flexible printed circuit board is connected with the input terminal through a metal wiring, and the metal wiring and the first fan-out wiring are arranged in different layers.
2. The display panel of claim 1, wherein the signal lines further comprise third signal lines, the fan-out traces further comprising third fan-out traces;
the third signal line is located in the display area, the third fan-out wiring line is located in the fan-out area, the third fan-out wiring line is electrically connected with the third signal line, and the third fan-out wiring line passes through any one edge of the integrated circuit binding area and is electrically connected with the third terminal of the integrated circuit binding area.
3. The display panel of claim 2, wherein when the first terminal is disposed on the integrated circuit strapping region along the extending direction of the first side and the second terminal is disposed on the integrated circuit strapping region along the extending direction of the second side, the third terminal is disposed on the integrated circuit strapping region along the extending direction of a third side;
wherein the third edge is one edge of the integrated circuit bonding region perpendicular to the second edge, and the first edge and the third edge are two different edges of the integrated circuit bonding region.
4. The display panel according to claim 2, wherein when the second terminal is disposed on the integrated circuit bonding area along an extending direction of the second side and the first terminal is disposed on the integrated circuit bonding area along an extending direction of a fourth side, the third terminal is disposed on the integrated circuit bonding area along an extending direction of the fourth side, and the first terminal is closer to the first side than the third terminal.
5. A display panel as claimed in any one of the claims 2-4 characterized in that the third fan-out trace is connected to the third terminal via a third side.
6. The display panel according to any one of claims 2 to 4, wherein the third fan-out trace is connected to the third terminal through the trace accommodating area.
7. The display panel according to claim 4, wherein the third terminal is an input terminal, and the first terminal and the third terminal are electrically connected to a flexible printed circuit board.
8. The display panel according to any one of claims 2 to 4 or 7, wherein the display panel comprises a plurality of the first terminals, a plurality of the second terminals, a plurality of the third terminals; wherein the number of the first terminals is the same as the number of the third terminals.
9. A display device characterized in that it comprises a display panel according to any one of claims 1 to 8.
CN201910129763.9A 2019-02-21 2019-02-21 Display panel and display device Active CN109634003B (en)

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