CN113327516B - Display panel and display device - Google Patents
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- CN113327516B CN113327516B CN202110599709.8A CN202110599709A CN113327516B CN 113327516 B CN113327516 B CN 113327516B CN 202110599709 A CN202110599709 A CN 202110599709A CN 113327516 B CN113327516 B CN 113327516B
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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Abstract
The invention discloses a display panel and a display device. The display panel comprises a display area and a binding area positioned on one side of the display area, and the display panel comprises a plurality of signal lines positioned in the display area and fan-out routing wires connected with the signal lines; the fan-out wiring is arranged in the display area, one end of the fan-out wiring is arranged on one side, close to the binding area, in the display area, and the other end of the fan-out wiring is connected with one signal wire in the display area. According to the display panel, the fan-out wiring is arranged in the display area of the display panel, and the frame of the display panel is compressed by reducing the height of the binding area, so that the screen occupation ratio and the display effect are improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a display device.
Background
In the manufacturing process of the current display panel, an electric signal of a driving circuit needs to be transmitted into the display panel through a module process for binding a chip on film or a flexible circuit board, due to the limitation of the binding process, signal lines in the display panel generally need to be concentrated to a preset binding area through a fan-out area, then the chip on film or the flexible circuit board is bound, and finally, an electric connection is formed between the printed circuit board and the display panel, so that the width of a frame area is large. The size of the border is a crucial indicator for measuring the quality of the tiled display screen, and the size of the border is mainly limited by the heights of the Fanout line (Fanout) and the olb (outer lead bonding). The current narrow-border products mostly adopt narrow-binding, side-binding or back-binding processes, and narrow borders or no borders are realized by reducing the height of the OLB. However, the binding equipment and the side transfer Ag technology, which are required to be narrow-bound, side-bound or back-bound, are not high in process maturity, and are not favorable for the development of tiled display.
Disclosure of Invention
The invention aims to meet the requirements of narrow-frame and even frameless splicing display; the invention provides a display panel, wherein fan-out wiring is arranged in a display area of the display panel, and the purpose of compressing a frame is achieved by reducing the height of a binding area.
In order to achieve the above object, an embodiment of the present invention provides a display panel, where the display panel includes a display area and a binding area located on one side of the display area, and the display panel includes a plurality of signal lines located in the display area and a fan-out trace connected to the signal lines;
the fan-out wiring is arranged in the display area, one end of the fan-out wiring is arranged on one side, close to the binding area, in the display area, and the other end of the fan-out wiring is connected with one signal wire in the display area.
In some embodiments, the display panel includes a plurality of driving circuits disposed in the display area and connected to the signal lines, the display area includes a routing sub-area disposed between the driving circuits, and the fan-out routing is disposed in the routing sub-area.
In some embodiments, the plurality of signal lines include a plurality of data lines parallel to a first direction and a plurality of scan lines parallel to a second direction, the fan-out trace includes a plurality of first fan-out traces connected to the data lines and a plurality of second fan-out traces connected to the scan lines, and the display area and the bonding area are arranged in parallel along the first direction.
In some embodiments, each of the first fan-out traces includes an extension section located in the trace sub-area and a connection section connected to the data line, one end of the extension section is disposed on a side of the display area close to the bonding area, and the other end of the extension section extends along the first direction and is connected to the connection section.
In some embodiments, the extending segments are located between the data lines and are arranged at equal intervals.
In some embodiments, the second fan-out traces and the scan lines are disposed in different layers, and each of the second fan-out traces is bridged with one of the scan lines by a via.
In some embodiments, the second fan-out traces and the data lines are disposed on the same layer, and each of the second fan-out traces is located between each of the data lines and is arranged at equal intervals.
In some embodiments, the second fan-out trace is disposed in a different layer from the data line.
In some embodiments, the display panel includes a light-shielding layer on the fan-out traces.
The embodiment of the invention also provides a display device, which comprises a plurality of display panels as described in the previous embodiment, wherein any two adjacent display panels are spliced along the first direction or the second direction.
Has the advantages that: the invention discloses a display panel and a display device. The display panel comprises a plurality of signal lines positioned in the display area and fan-out routing wires connected with the signal lines; the fan-out wiring is arranged in the display area, one end of the fan-out wiring is arranged on one side, close to the binding area, in the display area, and the other end of the fan-out wiring is connected with one signal line in the display area. According to the invention, the fan-out routing is arranged in the display area of the display panel, compared with the existing design that the fan-out routing is arranged in the fan-out area at the edge of the display area, the frame space of the display panel is not occupied, the height of the binding area is reduced, the frame of the display panel is compressed, and the screen occupation ratio and the display effect are improved.
Drawings
The technical scheme and other beneficial effects of the invention are obvious from the detailed description of the specific embodiments of the invention in combination with the attached drawings.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention.
Specifically, referring to fig. 1, the present invention provides a display panel, where the display panel includes a display area 100 and a binding area 200 located at one side of the display area 100, and the display panel includes a plurality of signal lines 101 located in the display area 100 and fan-out traces 102 connected to the signal lines 101;
the fan-out trace 102 is disposed in the display area 100, one end of the fan-out trace 102 is disposed at a side of the display area 100 close to the bonding area 200, and the other end of the fan-out trace 102 is connected to one of the signal lines 101 in the display area 100.
It can be understood that, in the manufacturing process of the existing display panel, the electrical signal of the driving circuit needs to be transmitted to the display panel through the module process of bonding the chip on film or the flexible circuit board, due to the limitation of the bonding process, the signal lines in the display panel need to be concentrated to the preset bonding area through the fan-out area, then the chip on film or the flexible circuit board is bonded, and finally, the printed circuit board is electrically connected with the display panel, so that the width of the frame area is large. The size of the frame is mainly limited by the height of the fanout line and the binding area 200, the narrow frame product mostly adopts narrow binding, side binding or back binding technology, and the narrow frame or no frame is realized by reducing the height of the binding area 200.
Compared with the prior art, the display panel according to the embodiment of the invention includes a plurality of signal lines 101 in the display area 100 and fan-out traces 102 connected to the signal lines 101; the display panel comprises a display area 100 and a binding area 200 located on one side of the display area 100, the fan-out wiring 102 is arranged in the display area 100, the fan-out wiring is different from the existing display panel in that the fan-out wiring is located in a non-display area 100 on the periphery of the display area 100, and a plurality of fan-out wirings are concentrated in the fan-out area and connected with a driving line. One end of the fan-out wire 102 is disposed at one side of the display area 100 close to the binding area 200, the other end of the fan-out wire 102 is connected to one signal line 101 in the display area 100, and the fan-out wire 102 can be connected to a driving line in the binding area 200, so as to connect the signal line 101 to an external driving electrical signal. By arranging the fan-out routing lines 102 in the display area 100 of the display panel, the height of the binding area 200 is reduced to compress the frame of the display panel, and the screen occupation ratio and the display effect are improved.
In some embodiments, the display panel includes a plurality of driving circuits 20 located in the display area 100 and connected to the signal lines 101, the display area 100 includes a routing sub-area located between the driving circuits 20, and the fan-out routing 102 is disposed in the routing sub-area.
It is understood that, as shown in fig. 2, the driving circuit 20 located in the display area 100 is used for driving and controlling the brightness of the display panel, the signal line 101 is connected to the driving circuit 20 for providing the required electrical signal, and the driving circuit 20 may be an active matrix driving circuit; the display area 100 further includes a routing sub-area located between the driving circuits 20, the signal lines 101 and other power lines may be disposed in the routing sub-area, the fan-out traces 102 are disposed in the routing sub-area, and the layout space of the VDD or VSS traces in the routing sub-area may be compressed, for example, the line width and/or the trace pitch of the VDD or VSS traces may be adjusted, so as to make room for accommodating the fan-out traces 102 and dispose the fan-out traces in the display area 100, which does not affect the display effect of the display panel, but also reduces the height of the binding area 200 to reach and compress the frame of the display panel, thereby improving the screen occupation ratio. The display panel may be a mini light emitting diode display panel. It is a plurality of mini emitting diode display panel can be used to mini emitting diode and show the concatenation screen, realizes the concatenation screen that no frame shows, promotes the impression that shows, and the concatenation screen includes a plurality of mini emitting diode display panel, it is a plurality of display panel can follow first direction array and arrange, and/or a plurality of display panel can follow the second direction array and arrange. The first direction and the second direction are perpendicular to each other. The height of the binding area 200 is reduced, so that the size of the frame area of the display panel is reduced, the subsequent display panel is favorably used for a spliced screen display device, seamless splicing and assembling are realized to form a frameless spliced display screen, and the display effect is improved.
In some embodiments, the plurality of signal lines 101 includes a plurality of data lines 1011 parallel to a first direction and a plurality of scan lines 1012 parallel to a second direction, the fan-out trace 102 includes a plurality of first fan-out traces 1021 connected to the data lines 1011 and a plurality of second fan-out traces 1022 connected to the scan lines 1012, and the display area 100 and the bonding area 200 are arranged in parallel along the first direction.
It is understood that the display panel includes a plurality of signal lines 101, the plurality of signal lines 101 includes a plurality of data lines 1011 parallel to a first direction and a plurality of scan lines 1012 parallel to a second direction, the first direction and the second direction are perpendicular to each other, the plurality of data lines 1011 are used for providing voltage signals required by the driving circuit 20, and the plurality of scan lines 1012 are used for providing switching gate signals required by the driving circuit 20. The fan-out routing line 102 includes a plurality of first fan-out routing lines 1021 connected with the data lines 1011 and a plurality of second fan-out routing lines 1022 connected with the scan lines 1012, where the first fan-out routing lines 1021 and the second fan-out routing lines 1022 are respectively connected with the corresponding data lines 1011 and the corresponding scan lines 1012, so as to implement input of external electrical signals required by the display panel. The display area 100 and the bonding area 200 are arranged in parallel along the first direction, the bonding area 200 is located at one side below the display area 100, and in a narrow frame design, a source driving unit and a gate driving unit can be placed at the same side of the display panel, so that the size of a frame can be optimized compared with the traditional method that the source driving unit and the gate driving unit are placed at two adjacent sides of the display panel; the other end of the fan-out trace 102 extends out of the bonding area 200 of the display panel, and the extending direction thereof is correspondingly located at this side. Because the fan-out wiring 102 is located in the display area 100, the height of the binding area 200 is greatly reduced, the problem that the width of a side frame is large due to the fact that a source electrode driving unit and a grid electrode driving unit are arranged on the same side in the existing display panel is solved, the frame on one binding side of the display panel is compressed, the number of the chip on films bound in the later period is reduced, and the design of a narrow frame and even no frame of the display panel is achieved.
In some embodiments, each of the first fan-out traces 1021 includes an extension located in the trace sub-area and a connection section connected to the data line 1011, where one end of the extension is disposed on a side of the display area 100 close to the bonding area 200, and the other end of the extension extends along the first direction and is connected to the connection section.
It can be understood that, as shown in fig. 1, the first fan-out trace 1021 is connected to the data line 1011 parallel to a first direction, the bonding area 200 and the display area 100 are arranged side by side along the first direction, and the fan-out trace 102 needs to extend to the side of the bonding area 200, so that the first fan-out trace 1021 is arranged to include a connection section where an extension section located in the trace sub-area is connected to the data line 1011; the first fan-out routing 1021 is approximately of an inverted-L shape, and the connection section is connected with the data line 1011 and extends along the second direction; one end of the extension section is disposed at a side of the display area 100 close to the bonding area 200, the other end of the extension section extends along the first direction and is connected to the connection section, and a port of the extension section at the side of the bonding area 200 is connected to the driving line in a bonding manner.
Preferably, the extending segments are located between the data lines 1011 and are arranged at equal intervals.
It can be understood that the direction of each of the extension segments is parallel to the direction of the data lines 1011, the extension segments are located between the data lines 1011, the extension segments are arranged in the display area 100 at equal intervals, and the routing lines are uniformly distributed in the pixels of the display panel, so that the visual sense of the screen is optimized, and the display quality is effectively improved.
In some embodiments, the second fan-out traces 1022 are disposed in different layers from the scan lines 1012, and each of the second fan-out traces 1022 is bridged with one of the scan lines 1012 by a via 3.
It is understood that, as shown in fig. 3-4, the scan line 1012 and the gate 1 of the display panel are located at the same layer, the second fan-out trace 1022 is connected to the scan line 1012, but the second fan-out trace 1022 extends to one side of the bonding area 200 along the first direction, the second fan-out trace 1022 crosses over a plurality of scan lines 1012 in the display area 100, in order to avoid signal interference generated at the intersection of the second fan-out trace 1022 and the scan line 1012, the second fan-out trace 1022 and the scan line 1012 are arranged in different layers, which may be located at the same layer as the active layer 2 of the display panel, and each second fan-out trace 1022 and one scan line 1012 are bridged by a via 3. The second fan-out trace 1022 may be disposed on one layer separately and connected to the scan line 1012 on a different layer through a via 3. By arranging the second fan-out routing 1022 in the display area 100 of the display panel, the height of the binding area 200 is reduced to compress the frame of the display panel, and the screen occupation ratio and the display effect are improved.
In some embodiments, the second fan-out traces 1022 are disposed on the same layer as the data lines 1011, and each of the second fan-out traces 1022 is located between the data lines 1011 and is arranged at an equal interval.
Alternatively, the second fan-out trace 1022 and the data line 1011 are disposed in different layers.
It can be understood that the second fan-out trace 1022 is disposed on the same layer as the data line 1011 or the second fan-out trace 1022 is disposed on a different layer from the data line 1011. The second fan-out trace 1022 and the scan line 1012 are located at different layers, and the second fan-out trace 1022 does not interfere with each other when crossing over multiple scan lines 1012 in the display area 100. The display panel further includes a pixel electrode layer 4 located at the top, and the second fan-out trace 1022 may be disposed on the same layer as the pixel electrode layer 4 and on a different layer from the data line 1011. In addition, when the second fan-out traces 1022 and the data lines 1011 are arranged on the same layer, the second fan-out traces 1022 are located between the data lines 1011 and are arranged at equal intervals, the second fan-out traces 1022 are arranged between the data lines 1011 of the display area 100 at equal intervals, the traces are uniformly dispersed in the pixels of the display panel, the visual sense of the screen is optimized, and the display quality is effectively improved.
In some embodiments, the display panel includes a light-shielding layer on the fan-out traces 102.
It can be understood that, in order to improve the display effect of the display panel and prevent the problem of metal reflection and display unevenness caused by the dense arrangement of the fan-out wires, the display panel includes a light shielding layer located on the fan-out wires 102, and may be that a layer of black ink is coated above the fan-out wires 102 to block the metal reflection and reduce the display uniformity affecting the display panel.
The embodiment of the invention also provides a display device, which comprises a plurality of display panels as described in any one of the previous embodiments, wherein any two adjacent display panels are spliced along the first direction or the second direction. The first direction and the second direction can be mutually perpendicular, the splicing number of the display panels in the first direction or the second direction can be adjusted at will according to the required display sizes with different sizes, and the application range is wide. The display device can be a fixed terminal display device, such as a computer, a household television and intelligent household equipment; or a mobile terminal display device, such as a mobile phone, a tablet computer, a navigator, a digital camera; and may be a wearable terminal display device, such as a sports watch, virtual reality wearable device. The specific structure of the display device can refer to the embodiment of the display panel described in any of the previous embodiments and fig. 1-4, and is not repeated herein.
The invention discloses a display panel and a display device. The invention discloses a display panel and a display device. The display panel comprises a display area and a binding area positioned on one side of the display area, and the display panel comprises a plurality of signal lines positioned in the display area and fan-out routing wires connected with the signal lines; the fan-out wiring is arranged in the display area, one end of the fan-out wiring is arranged on one side, close to the binding area, in the display area, and the other end of the fan-out wiring is connected with one signal wire in the display area. According to the display panel, the fan-out wiring is arranged in the display area of the display panel, and the height of the binding area is reduced to compress the frame of the display panel, so that the screen occupation ratio and the display effect are improved.
The display panel and the display device provided by the embodiment of the present invention are described in detail above, and the principle and the embodiment of the present invention are explained in the present document by applying specific examples, and the description of the above embodiments is only used to help understanding the technical scheme and the core idea of the present invention; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present invention in its embodiments.
Claims (7)
1. A mini light emitting diode display panel is characterized in that the display panel is divided into a display area and a binding area positioned on one side of the display area;
the display panel includes:
a plurality of signal lines positioned in the display area; the plurality of signal lines comprise a plurality of data lines parallel to a first direction and a plurality of scanning lines parallel to a second direction; the scanning line and the grid electrode of the display panel are positioned on the same layer;
a plurality of driving circuits located in the display area; voltage signals required by the driving circuit are provided by the data lines, and switch gating signals required by the driving circuit are provided by the scanning lines;
the fan-out routing comprises a plurality of first fan-out routing and a plurality of second fan-out routing; the first fan-out routing is connected with the corresponding data line; the second fan-out routing lines and the scanning lines are arranged in different layers and are connected with the corresponding scanning lines through via holes; and
the light shielding layer is coated above the fan-out routing;
the display area comprises a wiring sub-area positioned among the plurality of driving circuits, and the fan-out wiring, the VDD wiring and the VSS wiring are arranged in the wiring sub-area;
one end of the fan-out routing wire is arranged on one side, close to the binding area, in the display area and is connected with the driving wire in the binding area so as to realize the connection of the signal wire and an external driving electric signal; the other end of the fan-out routing wire is connected with the signal wire in the display area.
2. The mini led display panel of claim 1, wherein the display area and the bonding area are juxtaposed in the first direction.
3. The mini led display panel of claim 2, wherein each of the first fan-out traces includes an extension section located in the trace sub-area and a connection section connected to the data line, one end of the extension section is disposed on a side of the display area close to the bonding area, and the other end of the extension section extends along the first direction and is connected to the connection section.
4. The mini led display panel of claim 3, wherein each of the extension segments is located between the data lines and arranged at equal intervals.
5. The mini light emitting diode display panel of claim 2, wherein the second fan-out traces are disposed in the same layer as the data lines, and each of the second fan-out traces is disposed between each of the data lines and is arranged at an equal interval.
6. The mini led display panel of claim 2, wherein the second fan-out traces are disposed in a different layer from the data lines.
7. A display device comprising a plurality of mini LED display panels as claimed in any one of claims 1 to 6, wherein any two adjacent display panels are tiled in a first direction or a second direction.
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| CN202110599709.8A CN113327516B (en) | 2021-05-31 | 2021-05-31 | Display panel and display device |
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| CN113849085B (en) * | 2021-09-27 | 2023-09-05 | Tcl华星光电技术有限公司 | Substrate and display panel |
| CN114020179B (en) * | 2021-10-25 | 2024-07-30 | 惠州华星光电显示有限公司 | Electromagnetic touch display panel |
| CN117204138A (en) * | 2022-02-25 | 2023-12-08 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
| CN114823822B (en) * | 2022-04-11 | 2023-11-07 | Oppo广东移动通信有限公司 | Display modules and display devices |
| CN114823825B (en) * | 2022-04-12 | 2025-01-28 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| US20240365611A1 (en) * | 2022-04-19 | 2024-10-31 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Display Substrate, Preparing Method Therefor, and Display Apparatus |
| WO2024050839A1 (en) * | 2022-09-09 | 2024-03-14 | 京东方科技集团股份有限公司 | Display substrate and display apparatus |
| CN117460319A (en) * | 2023-02-17 | 2024-01-26 | 武汉华星光电半导体显示技术有限公司 | Display panels and display devices |
| WO2024178572A1 (en) * | 2023-02-28 | 2024-09-06 | Boe Technology Group Co., Ltd. | Array substrate and display apparatus |
| KR20240154729A (en) * | 2023-04-18 | 2024-10-28 | 삼성디스플레이 주식회사 | Display device |
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| KR102106368B1 (en) * | 2013-07-15 | 2020-05-06 | 삼성디스플레이 주식회사 | Display apparatus |
| CN106057820B (en) * | 2016-07-21 | 2019-04-30 | 京东方科技集团股份有限公司 | Array substrate and preparation method thereof, display panel, and display device |
| CN107300793A (en) * | 2017-06-30 | 2017-10-27 | 厦门天马微电子有限公司 | Display panel and display device |
| CN108878444B (en) * | 2018-06-07 | 2021-11-19 | 武汉天马微电子有限公司 | Display panel and display device |
| CN109407436B (en) * | 2018-12-10 | 2020-06-16 | 武汉华星光电半导体显示技术有限公司 | array substrate |
| CN109491121B (en) * | 2018-12-24 | 2022-04-12 | 上海中航光电子有限公司 | Display panel and display device |
| CN109634003B (en) * | 2019-02-21 | 2021-12-07 | 厦门天马微电子有限公司 | Display panel and display device |
| CN110164359B (en) * | 2019-06-28 | 2022-03-22 | 武汉天马微电子有限公司 | Display panel and display device |
| CN111243486A (en) * | 2020-03-09 | 2020-06-05 | Tcl华星光电技术有限公司 | Array substrate and display panel |
| CN111653603B (en) * | 2020-06-18 | 2023-08-29 | 京东方科技集团股份有限公司 | Display substrate and display device |
| CN112310125B (en) * | 2020-10-30 | 2022-08-09 | 合肥京东方卓印科技有限公司 | Display substrate and display device |
| CN112366213B (en) * | 2020-11-06 | 2022-11-08 | 深圳市华星光电半导体显示技术有限公司 | Display panel and spliced screen |
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