CN108363254B

CN108363254B - Array substrate, display panel and display device

Info

Publication number: CN108363254B
Application number: CN201810172179.7A
Authority: CN
Inventors: 谢影; 金慧俊; 秦丹丹
Original assignee: Shanghai AVIC Optoelectronics Co Ltd
Current assignee: Shanghai AVIC Optoelectronics Co Ltd
Priority date: 2018-03-01
Filing date: 2018-03-01
Publication date: 2021-03-02
Anticipated expiration: 2038-03-01
Also published as: CN108363254A

Abstract

The invention provides an array substrate, a display panel and a display device, wherein the array substrate comprises: a display area and a peripheral circuit area surrounding the display area; a plurality of functional signal lines extending in a first direction and arranged in a second direction in the display region; each first fan-out wire is connected with one second fan-out wire through a wire changing part, the first fan-out wire and the second fan-out wire are arranged in different layers, and each second fan-out wire is connected with one functional signal wire; the display area comprises a first line changing part row and a second line changing part row, wherein the first line changing part row and the second line changing part row respectively extend along a second direction and respectively comprise at least one line changing part, and the second line changing part row is positioned on one side, close to the display area, of the first line changing part row; and at least one first fan-out routing line connected with the second line changing part row is crossed with at least one second fan-out routing line connected with the first line changing part row. The invention realizes flexible wiring of the display panel and occupies small space.

Description

Array substrate, display panel and display device

Technical Field

The embodiment of the invention relates to a display technology, in particular to an array substrate, a display panel and a display device.

Background

With the development of display technologies, a full-screen product is more and more favored by consumers with an ultrahigh screen occupation ratio, and the higher the screen occupation ratio of a display panel is, the narrower the frame of the display panel is, that is, the smaller the space occupied by the peripheral wiring of the display panel is required to be.

Fig. 1 is a top view of a conventional array substrate, and referring to fig. 1, square line-changing portions 001 are arranged in a line along an x direction, a first fan-out trace 002 is connected with a second fan-out trace 003 through the square line-changing portions 001, and each second fan-out trace 003 is connected with a functional signal line 004. However, since the functional signal input by each first fan-out trace 002 is definite, the functional signal line 004 can only be connected with one first fan-out trace 002 through a fixed line changing part, which will result in that the array substrate cannot be flexibly wired, and in addition, since the space occupied by the square line changing part 001 in the x direction is large, the display panel cannot realize a narrow frame design through a corner cut.

Disclosure of Invention

The invention provides an array substrate, a display panel and a display device, which are used for realizing flexible wiring of the display panel and saving the space occupied by the wiring.

In a first aspect, an embodiment of the present invention provides an array substrate, including:

a display area and a peripheral circuit area surrounding the display area;

a plurality of functional signal lines extending in a first direction and arranged in a second direction in the display region;

the first fan-out wires, the second fan-out wires and the wire changing parts are respectively positioned in the peripheral circuit area, each first fan-out wire is connected with one second fan-out wire through one wire changing part, the first fan-out wires and the second fan-out wires are arranged in different layers, and each second fan-out wire is connected with one functional signal wire;

the first wire replacing part row and the second wire replacing part row respectively extend along the second direction and respectively comprise at least one wire replacing part, and the second wire replacing part row is positioned on one side, close to the display area, of the first wire replacing part row; wherein the content of the first and second substances,

at least one first fan-out routing line connected with the second line changing part row is crossed with at least one second fan-out routing line connected with the first line changing part row.

Optionally, the plurality of functional signal lines include a plurality of data signal lines and a plurality of touch signal lines.

Optionally, the plurality of wire replacement parts include a plurality of first wire replacement parts and a plurality of second wire replacement parts, the first wire replacement parts are located in the first wire replacement part rows, and the second wire replacement parts are located in the second wire replacement part rows;

each first line changing part is connected with one data signal line through one second fan-out routing line;

each second wire replacement part is connected with one touch signal wire through one second fan-out routing wire.

Optionally, the array substrate further includes a plurality of scanning signal lines extending along the second direction and arranged along the first direction;

the first fan-out routing and the scanning signal line are arranged on the same layer.

Optionally, each first fan-out trace connected to the second wire replacement part row intersects with at least one second fan-out trace connected to the first wire replacement part row.

Optionally, the array substrate further includes a driving circuit and at least one third fan-out trace, the driving circuit is located on one side of the first fan-out trace, which is far away from the display area, and the third fan-out trace is located between the display area and the driving circuit;

each first fan-out routing is connected with the driving circuit;

each third fan-out wiring is respectively connected with the driving circuit and the functional signal line arranged on the same layer.

Optionally, the array substrate includes a plurality of third fan-out traces, and the third fan-out traces and the first fan-out traces are arranged at intervals on a side of the first wire replacing line away from the display area.

Optionally, the maximum length of the wire-changing part along the first direction is greater than the maximum length thereof along the second direction.

In a second aspect, an embodiment of the present invention further provides a display panel, where the display panel includes the array substrate provided in any of the embodiments.

In a third aspect, an embodiment of the present invention further provides a display device, where the display device includes the display panel provided in the foregoing embodiment.

According to the invention, each first fan-out wire is connected with one second fan-out wire through one wire replacing part, the first fan-out wire and the second fan-out wire are arranged in different layers, and each second fan-out wire is connected with one functional signal wire; the first line changing part row and the second line changing part row respectively extend along a second direction and respectively comprise at least one line changing part, and the second line changing part row is positioned on one side, close to the display area, of the first line changing part row; the at least one first fan-out line connected with the second line changing part line is crossed with the at least one second fan-out line connected with the first line changing part line, so that the problems that the existing display panel is large in wiring occupied space, cannot realize narrow frames and cannot flexibly wire are solved, the display panel is small in wiring occupied space, can realize narrow frames and is flexible in wiring.

Drawings

Fig. 1 is a top view of a conventional array substrate.

Fig. 2 is a top view of an array substrate according to an embodiment of the invention;

fig. 3 is a schematic diagram of a wiring structure according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of another wiring structure provided in the embodiment of the present invention;

fig. 5 is a top view of an array substrate with a narrow bottom border design according to an embodiment of the present invention;

fig. 6 is a top view of another array substrate according to an embodiment of the present invention;

fig. 7 is a top view of another array substrate according to an embodiment of the present invention;

FIG. 8 is a cross-sectional view along AA' of the array substrate shown in FIG. 7;

fig. 9 is a top view of another array substrate according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Fig. 2 is a top view of an array substrate according to an embodiment of the present invention, referring to fig. 2, the array substrate includes a display area 100 and a peripheral circuit area 200 surrounding the display area 100;

a plurality of functional signal lines 110, in the display area 100, the plurality of functional signal lines 100 extend along a first direction y and are arranged along a second direction x;

the plurality of first fan-out wires 120, the plurality of second fan-out wires 130, the plurality of wire changing parts 140, the plurality of first fan-out wires 120, the plurality of second fan-out wires 130 and the plurality of wire changing parts 140 are respectively positioned in the peripheral circuit region 200, each first fan-out wire 120 is connected with one second fan-out wire 130 through one wire changing part 140, the first fan-out wires 120 and the second fan-out wires 130 are arranged in different layers, and each second fan-out wire 130 is connected with one functional signal wire 110;

the first wire replacing part row 300, the second wire replacing part row 400, the first wire replacing part row 300 and the second wire replacing part row 400 respectively extend along the second direction x and respectively comprise at least one wire replacing part 140, and the second wire replacing part row 400 is positioned on one side of the first wire replacing part row 300 close to the display area 100; wherein the content of the first and second substances,

the at least one first fan-out trace 120 connected by the second wire replacement part row 400 crosses the second fan-out trace 130 connected by the at least one first wire replacement part row 300.

One end of each first fan-out trace 120 is connected to one second fan-out trace 130 through a wire-changing part 140, and the other end is used for inputting a functional signal. Since each first fan-out trace 120 is connected to one second fan-out trace 130 through a wire replacing part 140, and each second fan-out trace 130 is connected to one functional signal line 110, the functional signal line 110 can output functional signals to each functional unit (area) of the display area 100. For example, the functional signal line 110 can be selected as a data signal line or a scan signal line for transmitting a data signal or a scan signal to the pixel unit to implement a display function, or the functional signal line 110 can be selected as a touch signal line for transmitting a touch signal to the touch unit, for example, transmitting a touch signal to the touch electrode to implement a touch function. The wire replacing part 140 is used for electrically connecting two wires located at different layers.

Since the second line replacement part row 400 is located at one side of the first line replacement part row 300 close to the display area 100; and the first fan-out trace 120 and the second fan-out trace 130 are arranged in different layers, the first fan-out trace 120 and the second fan-out trace 130 can be cross-routed in the region 500 between the second wire-shifting row 400 and the first wire-shifting row 300. In the routing process of the array substrate, since the first fan-out trace 120 may cross the second fan-out trace 130 in the region 500 between the second wire replacement part row 400 and the first wire replacement part row 300, the first fan-out trace 120 may be connected with one second fan-out trace 130 through any one wire replacement part 140 in the second wire replacement part row 400. In the prior art, the position of each first fan-out trace 120 connected to the second fan-out trace 130 through the wire replacing part 140 is basically fixed, and the first fan-out trace 120 can only be connected to a fixed second fan-out trace 130 through the fixed wire replacing part 140, and cannot be flexibly selected.

Fig. 3 is a schematic diagram of a wiring structure according to an embodiment of the present invention, fig. 4 is a schematic diagram of another wiring structure according to an embodiment of the present invention, and the difference between the two wiring structures provided in fig. 3 and fig. 4 is that for the same first fan-out trace 120, the two wiring structures are respectively connected to one second fan-out trace 130 through different wire replacing parts 140 in a second wire replacing part row 400. Specifically, taking a wiring process of one of the first fan-out traces 120 as an example, the first fan-out trace 120 is located in the first area 600 in the peripheral circuit area 200 and is used for inputting the functional signal S1, referring to fig. 3 and fig. 4, in fig. 3, one first fan-out trace 120 located in the first area 600 is connected to one second fan-out trace 130 through the wire changing portion 140 of the second area 700, so that the functional signal lines 110 for outputting the functional signal S1 are arranged in the area 800 in the display area 100; in fig. 4, the first fan-out trace 120 located in the first area 600 is connected to one second fan-out trace 130 through the wire-changing portion 140 of the third area 900, so that the functional signal wires 110 for outputting the functional signal S1 are arranged in the 010 area of the display area 100, and thus it can be seen that the first fan-out trace 120 is connected to one second fan-out trace 130 through the wire-changing portion 140 different from that in the second wire-changing portion row 400, and various wiring connection manners of the functional signal wires 110 can be achieved.

In this embodiment, each first fan-out trace 120 is connected to one second fan-out trace 130 through one wire replacing part 140, the first fan-out trace 120 and the second fan-out trace 130 are arranged in different layers, and each second fan-out trace 130 is connected to one functional signal wire 110; the first wire replacing line 300 and the second wire replacing line 400 respectively extend along the second direction x and both comprise at least one wire replacing part 140, and the second wire replacing line 400 is positioned at one side of the first wire replacing line 300 close to the display area 100; the at least one first fan-out trace 120 connected with the second wire replacing part row 400 is intersected with the second fan-out trace 130 connected with the at least one first wire replacing part row 300, so that the problems that the conventional display panel cannot flexibly wire and the wiring space is wasted are solved, the flexible wiring of the display panel is realized, and the display panel comprises two wire replacing parts of the first wire replacing part row 300 and the second wire replacing part row 400, so that compared with the conventional display panel, the display panel has one wire replacing part row, the space occupied by the wire replacing part 140 in the second direction x can be reduced, and the wiring occupied space is saved.

Referring to fig. 2, optionally, the array substrate further includes a driving circuit 310, where the driving circuit 310 includes a plurality of ports, the plurality of ports may be used to output different function signals, the driving circuit 310 may be a driving chip, and the plurality of ports are a plurality of pins, generally, in addition to the functional pins for outputting the function signals, a floating pin (dummy pin) is further disposed on the driving circuit 310 for connecting the floating trace of the display area 100 to achieve the functions of shielding light or releasing static electricity, and since the floating pin is generally disposed at the edge of the driving circuit 310 along the second direction x, the existing array substrate can only arrange the floating trace in the edge region of the display area 100 of the array substrate, and arranging the floating trace in the middle region of the display area 100 of the array substrate would require cross-wiring and complicated wiring, and in this embodiment, the first fan-out 120 can arrange the second wire changing part row 400 and the first wire changing part row 300 between the region 500 and the second wire part row 300 The two fan-out wires 130 are crossed, so that the floating wires can be conveniently arranged in the middle area of the array substrate, flexible wiring of the display panel is realized, and the wiring occupation space is saved.

Alternatively, in fig. 2, the maximum length of the wire changing portion 140 in the first direction y is greater than the maximum length thereof in the second direction x. By such an arrangement, the wiring space of the peripheral circuit area 200 of the array substrate in the second direction x can be further saved, and the design of a lower narrow frame of the display panel can be realized. Fig. 5 is a top view of an array substrate with a lower narrow frame design according to an embodiment of the present invention, and referring to fig. 5, for example, a lower frame of the array substrate is designed to have a unfilled corner 011, and optionally, the lower frame of the array substrate may also be designed to be circular arc-shaped. After the lower frame of the array substrate is designed to be 011 with the unfilled corners, the space of the lower frame is smaller, and the design shown in fig. 5 cannot be realized because the square line changing part adopted by the existing array substrate occupies a large space.

It should be noted that, in fig. 2, fig. 3, fig. 4 and fig. 5, the numbers of the functional signal lines 110, the first fan-out traces 120, the second fan-out traces 130 and the line changing portions 140, and the wiring manner of the functional signal lines 110 are all specific examples of the present invention, and are not limited to the present invention.

Fig. 6 is a top view of another array substrate according to an embodiment of the present invention, referring to fig. 6, based on the above solution, optionally, each first fan-out trace 120 connected to the second wire-displacement row 400 crosses with the second fan-out trace 120 connected to at least one first wire-displacement row 300. Each first fan-out trace 120 connected with the second wire replacing part row 400 is arranged to intersect with the second fan-out trace 120 connected with at least one first wire replacing part row 300, so that the number of fan-out traces arranged on the same layer between adjacent wire replacing parts 140 can be reduced, the distance between adjacent wire replacing parts 140 is reduced, and the effect of further saving the occupied space of wiring is achieved.

Fig. 7 is a top view of another array substrate according to an embodiment of the present invention, referring to fig. 7, based on the above scheme, optionally, the plurality of functional signal lines 110 include a plurality of data signal lines 111 and a plurality of touch signal lines 112. In practical applications, optionally, the number ratio of the data signal lines 111 to the touch signal lines 112 may be 2: the 1 or 3:1 setting, where the 2:1 setting may be used for high resolution display panel design.

The plurality of line changing parts 140 include a plurality of first line changing parts 141 and a plurality of second line changing parts 142, the first line changing parts 141 are located in the first line changing part rows 300, and the second line changing parts 142 are located in the second line changing part rows 400. In general, one data signal line 111 corresponds to a row of sub-pixel units of the display panel of the array substrate display area 100, the data signal line 111 transmits data signals for the corresponding row of sub-pixel units, and the data signal line 111 is arranged on the display area 100 in a fixed manner. Therefore, optionally, each first wire replacement part 141 is connected with one data signal line 111 through one second fan-out trace 130; each second wire replacing part 142 is connected with one touch signal line 112 through one second fan-out routing line 130.

In this embodiment, each second wire replacing part 142 is connected to one touch signal line 112 through one second fan-out trace 130, and each second wire replacing part 142 is connected to a touch signal pin on the driving circuit 310 through one first fan-out trace 120, and because the first fan-out trace 120 and the second fan-out trace 130 may be crossed in the area 500 between the second wire replacing line 400 and the first wire replacing line 300, flexible arrangement of the touch signal lines 112 may be achieved, and the space occupied by the wiring may be saved.

With reference to fig. 7, optionally, the array substrate further includes a plurality of scanning signal lines 150 extending along the second direction x and arranged along the first direction y; fig. 8 is a cross-sectional view of the array substrate shown in fig. 7 along AA', and referring to fig. 7 and 8, the first fan-out trace 120 and the scan signal line 150 are disposed in the same layer, that is, the first fan-out trace 120 and the scan signal line 150 can be formed in the same process. The arrangement can simplify the process and reduce the thickness of the array substrate. In fig. 8, the array substrate further includes a substrate 012, and insulating

layers

013 and 014 provided between the scan signal lines 150 and the data signal lines 111.

Fig. 9 is a top view of another array substrate provided in an embodiment of the present invention, referring to fig. 9, on the basis of the above embodiment, optionally, the array substrate further includes a driving circuit 310 located in the peripheral circuit region 200 and at least one third fan-out trace 220, the driving circuit 310 is located on a side of the first fan-out trace 120 away from the display region 100, and the third fan-out trace 220 is located between the display region 100 and the driving circuit 210; each first fan-out trace 120 is connected to the driving circuit 310; each third fan-out trace 220 is connected to the driving circuit 310 and one functional signal line 110 disposed on the same layer.

In the array substrate, one end of the third fan-out trace 220 is connected to the driving circuit 210, and the other end is connected to one functional signal line 110 disposed on the same layer, that is, the functional signal line 110 may be directly connected to the third fan-out trace 220 on the same layer without passing through the wire replacing part 140, so that the wiring manner of the array substrate is more flexible, and the occupied space of the wiring is more saved.

With reference to fig. 9, optionally, the array substrate includes a plurality of third fan-out traces 220, and the third fan-out traces 220 and the first fan-out traces 120 are arranged at intervals on a side of the first wire-changing portion row 300 away from the display area 100. Because the third fan-out line 220 and the first fan-out line 130 are arranged at intervals, the third fan-out line 220 and the first fan-out line 120 are arranged in different layers, one side of the first line changing line 300, which is far away from the display area 100, is provided with a small distance between the adjacent first fan-out line 120 and the third fan-out line 220, even in the direction perpendicular to the array substrate, the adjacent first fan-out line 120 and the adjacent third fan-out line 220 can be overlapped, the wiring space of the peripheral circuit area 200 of the display panel in the second direction x is fully utilized, the wiring mode of the array substrate is more flexible, and the wiring occupation space is further saved.

Fig. 10 is a schematic structural diagram of a display panel according to an embodiment of the present invention, referring to fig. 10, the display panel may be an organic light emitting diode display panel, and includes the array substrate 610 in any of the embodiments described above, and further includes a substrate disposed opposite to the array substrate 610 and being an encapsulation cover or a thin film encapsulation layer, and in fig. 10, the substrate disposed opposite to the array substrate 610 in the display panel is exemplarily an encapsulation cover 620. The display panel may further include a plurality of organic light emitting structures 611, and all of the organic light emitting structures 611 may be located on the array substrate 610 and arranged in an array. The organic light emitting structure 611 may include a cathode, an anode, and an organic light emitting layer between the cathode and the anode, and the organic light emitting layer may include a light emitting material layer and an auxiliary light emitting layer, and the auxiliary light emitting layer may include at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer. Under the action of an applied electric field, electrons and holes are injected from the cathode and the anode into the light emitting material layer in the organic light emitting layer, respectively, to migrate, recombine and decay in the light emitting material layer to emit light.

Fig. 11 is a schematic structural diagram of another display panel according to an embodiment of the present invention, referring to fig. 11, the display panel may be a liquid crystal display panel, and includes the array substrate 610 in any of the embodiments described above, and further includes a color filter substrate 810 disposed opposite to the array substrate 610, a liquid crystal layer 910 is further included between the array substrate 610 and the color filter substrate 810, and the liquid crystal layer 910 includes a plurality of liquid crystal molecules, and the liquid crystal molecules are deflected under the effect of an electric field, so as to control the luminance of light emitted by a backlight (not shown) when the light is emitted through the liquid crystal display panel.

It should be noted that the display panel provided by the embodiment of the present invention may be flexible.

The display panel provided in the embodiment of the present invention includes the array substrate 610 in the above embodiments, and therefore, the display panel provided in the embodiment of the present invention also has the beneficial effects described in the above embodiments, and details are not repeated herein.

Fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention, and referring to fig. 12, on the basis of the foregoing embodiments, the display device 710 includes a display panel 720 according to an embodiment of the present invention.

The display device 710 according to the embodiment of the present invention includes the display panel 720 according to the above embodiment, and therefore the display device 710 according to the embodiment of the present invention also has the beneficial effects described in the above embodiments, and details are not repeated herein. Optionally, the display device 710 may be a mobile phone shown in fig. 12, or may also be a computer, a television, an intelligent wearable display device, and the like, which is not particularly limited in this embodiment of the present invention.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An array substrate, comprising:

a display area and a peripheral circuit area surrounding the display area;

the first wire replacing part row and the second wire replacing part row respectively extend along the second direction and respectively comprise at least one wire replacing part, and the second wire replacing part row is positioned on one side, close to the display area, of the first wire replacing part row;

the fan-out structure is characterized in that at least one first fan-out routing line connected with the second line changing part row is crossed with at least one second fan-out routing line connected with the first line changing part row.

2. The array substrate of claim 1, wherein the plurality of functional signal lines comprise a plurality of data signal lines and a plurality of touch signal lines.

3. The array substrate of claim 2, wherein the plurality of line replacement parts comprises a plurality of first line replacement parts and a plurality of second line replacement parts, the first line replacement parts are located in the first line replacement part rows, and the second line replacement parts are located in the second line replacement part rows;

4. The array substrate of claim 2, further comprising a plurality of scan signal lines extending in the second direction and arranged in the first direction;

5. The array substrate of claim 1, wherein each of the first fan-out traces connected by the second wire replacement row intersects with at least one of the second fan-out traces connected by the first wire replacement row.

6. The array substrate of claim 1, further comprising a driving circuit and at least one third fan-out trace located in the peripheral circuit region, wherein the driving circuit is located on a side of the first fan-out trace away from the display region, and the third fan-out trace is located between the display region and the driving circuit;

each first fan-out routing is connected with the driving circuit;

7. The array substrate of claim 6, wherein the array substrate comprises a plurality of third fan-out traces, and the third fan-out traces are spaced apart from the first fan-out traces on a side of the first wire-changing rows away from the display area.

8. The array substrate of claim 1, wherein a maximum length of the wire-changing portion along the first direction is greater than a maximum length thereof along the second direction.

9. A display panel comprising the array substrate according to any one of claims 1 to 8.

10. A display device characterized by comprising the display panel according to claim 9.