CN108694890B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN108694890B CN108694890B CN201710217336.7A CN201710217336A CN108694890B CN 108694890 B CN108694890 B CN 108694890B CN 201710217336 A CN201710217336 A CN 201710217336A CN 108694890 B CN108694890 B CN 108694890B
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- metal lead
- segment
- display panel
- lead segment
- flexible substrate
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- G—PHYSICS
- 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
- G09F9/301—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 flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
Abstract
The embodiment of the invention discloses a display panel and a display device. The display panel includes: the flexible substrate and the metal lead are positioned on the flexible substrate; the metal lead comprises a plurality of first metal lead segments and a plurality of second metal lead segments; along the extending direction of the metal lead, the first metal lead segment and the second metal lead segment are arranged at intervals, and the first metal lead segment and the second metal lead segment are arranged in different layers; along the extending direction of the metal lead, the adjacent first metal lead section and the second metal lead section are electrically connected; the first metal lead segment and the second metal lead segment are provided with hollow areas. The embodiment of the invention improves the bending resistance of the metal lead.
Description
Technical Field
The present invention relates to display technologies, and in particular, to a display panel and a display device.
Background
With the development of display technology, the display effect of display products is continuously improved, so that the application of the display products is more and more extensive.
In the prior art, the metal leads in the non-display area of the display panel are mostly linear. When the display panel is a flexible display panel, the linear metal lead has a long line length and can bear the limitation of the fracture strain limit (the fracture strain limit of the metal per se is about 1%), when the display panel is bent, the metal lead has poor bending resistance, and is easy to break or break, so that signals cannot be normally transmitted.
Disclosure of Invention
The invention provides a display panel and a display device, which are used for improving the bending resistance of a metal lead.
In a first aspect, an embodiment of the present invention provides a display panel, where the display panel includes:
the flexible substrate and the metal lead are positioned on the flexible substrate;
the metal lead comprises a plurality of first metal lead segments and a plurality of second metal lead segments; along the extending direction of the metal lead, the first metal lead segment and the second metal lead segment are arranged at intervals, and the first metal lead segment and the second metal lead segment are arranged in different layers; along the extending direction of the metal lead, the adjacent first metal lead section and the second metal lead section are electrically connected;
the first metal lead segment and the second metal lead segment are provided with hollow areas.
Optionally, the display panel further includes:
the first inorganic layer is arranged between the film layer where the first metal lead segment is located and the film layer where the second metal lead segment is located;
the first metal lead segment and the second metal lead segment are electrically connected through a via hole on the first inorganic layer.
Optionally, the outer boundaries of the first metal lead segment and the second metal lead segment are diamond-shaped.
Optionally, along the extending direction of the metal lead, the hollow-out area has a first size X1; the hollow area has a second size Y1 along the direction vertical to the extending direction of the metal lead, wherein X1 is more than or equal to 5 mu m; y1 is more than or equal to 2 mu m.
Optionally, the display panel further includes:
the planarization layer is arranged on one side, away from the flexible substrate, of the metal lead;
the planarization layer fills the hollow-out areas of the first metal lead segment and the second metal lead segment.
Optionally, the display panel further includes:
and the second inorganic layer is arranged on one side of the metal lead close to the flexible substrate.
Optionally, the display panel further includes:
the third inorganic layer is arranged on one side, far away from the flexible substrate, of the metal lead;
the first metal lead segment is positioned on one side of the second metal lead segment close to the flexible substrate; the third inorganic layer covers the non-hollow-out area of the second metal lead segment.
Optionally, the metal lead is located in a display region of the flexible substrate.
Optionally, the metal lead is a data line and/or a scan line.
Optionally, the metal lead is located in a non-display region of the flexible substrate.
Optionally, the metal lead is at least one of a data lead, a scan lead, a clock signal line and a power signal line;
the data lead is used for connecting the source electrode driving chip with a data line of the display area; the scanning lead is used for connecting the grid driving chip with the scanning line of the display area.
In a second aspect, an embodiment of the present invention further provides a display device, where the display device includes the display panel according to any embodiment of the present invention.
The embodiment of the invention divides the metal lead into a plurality of first metal lead segments and a plurality of second metal lead segments, the first metal lead segments and the second metal lead segments are arranged in different layers, the stress on the metal lead when the display panel is bent is dispersed, and the first metal lead segments and the second metal lead segments are provided with the hollow areas, so that when the metal lead segments 120 are cracked or broken, the diffusion of cracks can be effectively prevented, and the signal transmission has a plurality of paths by arranging the hollow areas, when the metal lead segments on one path are broken, other paths can still normally transmit signals, thereby improving the bending resistance of the metal lead and ensuring the normal transmission of the signals when the display panel is bent.
Drawings
FIG. 1 is a schematic diagram of a display panel in the prior art;
FIG. 2 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of the display panel along the cross-sectional line A-A of FIG. 2;
FIG. 4 is a schematic diagram of another display panel in an embodiment of the invention;
FIG. 5 is a schematic cross-sectional view of the display panel along the line B-B in FIG. 4;
FIG. 6 is a schematic diagram of another display panel in an embodiment of the invention;
FIG. 7 is a schematic diagram of another display panel in an embodiment of the invention;
fig. 8 is a schematic diagram of a display device in an embodiment of the 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. 1 is a schematic diagram of a display panel in the prior art, and referring to fig. 1, the display panel includes a substrate 101 and metal lines 102, and the metal lines 102 are linear. When the display panel is bent along the direction Z1 in the figure, the metal lines 102 are easily broken under the stress, so that the signals cannot be transmitted normally.
To solve the above problem, the present embodiment provides a display panel. Fig. 2 is a schematic diagram of a display panel according to an embodiment of the present invention, fig. 3 is a schematic cross-sectional view of the display panel along a cross-sectional line a-a in fig. 2, and referring to fig. 2 and fig. 3, the display panel includes:
a flexible substrate 110, and a metal lead 120 on the flexible substrate 110;
the metal lead 120 includes a plurality of first metal lead segments 121 and a plurality of second metal lead segments 122; along the extending direction X of the metal lead 120, the first metal lead segment 121 and the second metal lead segment 122 are arranged at intervals, and the first metal lead segment 121 and the second metal lead segment 122 are arranged in different layers; along the extending direction X of the metal lead 120, the adjacent first metal lead segment 121 and second metal lead segment 122 are electrically connected;
the first metal lead segment 121 and the second metal lead segment 122 have a hollow area 123.
Specifically, the metal lead 120 is divided into a plurality of first metal lead segments 121 and a plurality of second metal lead segments 122, and the first metal lead segments 121 and the second metal lead segments 122 are arranged in different layers, so that stress on the metal lead 120 when the display panel is bent is dispersed, the first metal lead segments 121 and the second metal lead segments 122 are provided with the hollow areas 123, when the metal lead segments 120 are cracked or broken, the cracks can be effectively prevented from being diffused, signal transmission is provided with a plurality of paths by arranging the hollow areas 123, when the metal lead segments on one path are broken, other paths can still normally transmit signals, so that the bending resistance of the metal lead 120 is improved, and normal transmission of the signals when the display panel is bent is ensured.
Alternatively, referring to fig. 2 and 3, the display panel further includes:
a first inorganic layer 130, wherein the first inorganic layer 130 is disposed between the layer where the first metal lead segment 121 is located and the layer where the second metal lead segment 122 is located;
the first and second metal lead segments 121 and 122 are electrically connected through a via 131 on the first inorganic layer 130.
Specifically, the first inorganic layer 130 is mainly used to make the first metal lead segment 121 and the second metal lead segment 122 arranged in different layers, so as to ensure that the stress on the metal lead 120 when the display panel is bent is dispersed when the display panel is bent. The first inorganic layer 130 blocks water and oxygen, and can effectively prevent water vapor and oxygen from corroding the metal lead 120.
Optionally, the outer boundaries of the first metal lead segment 121 and the second metal lead segment 122 are diamond-shaped. Wherein, the outer boundaries of the first metal lead segment 121 and the second metal lead segment 122 refer to the outermost boundaries of the first metal lead segment 121 and the second metal lead segment 122. Specifically, along the extending direction X of the metal lead 120, the diamond-shaped vertex angles of the adjacent first metal lead segment 121 and second metal lead segment 122 are connected to each other. In addition, the outer boundaries of the first metal lead segment 121 and the second metal lead segment 122 may also have other shapes, which may be, for example, a hexagon, an ellipse, etc., and are not limited in particular.
Optionally, the shape of the hollow area 123 is a diamond. Specifically, the boundary of the hollow area 123 may be parallel to the outer boundaries of the first metal lead segment 121 and the second metal lead segment 122, so that the width distribution of the non-hollow area of the metal lead 120 is relatively uniform, thereby avoiding the situation that the metal lead 120 is easy to break when bent due to a small width, and improving the bending resistance of the metal lead 120 as a whole. In addition, the hollow area 123 may also have other shapes, which may be, for example, a hexagon, an ellipse, etc., and is not limited specifically.
Optionally, along the extending direction X of the metal lead 120, the hollow area 123 has a first size X1; the hollow area 123 has a second size Y1 along a direction Y perpendicular to the extending direction X of the metal lead 120, wherein X1 is greater than or equal to 5 μm; y1 is more than or equal to 2 mu m. By the arrangement, the process difficulty is reduced.
In addition, referring to fig. 1, at the connection point of the first metal lead segment 121 and the second metal lead segment 122, the range of the rhombic vertex angle α of the hollow area 123 of the first metal lead segment 121 and the second metal lead segment 122 may be greater than or equal to 30 degrees and less than 180 degrees. Specifically, the smaller the value of the vertex angle α of the diamond is, the smaller the resistance value of the first metal lead segment 121 or the second metal lead segment 122 is, and by setting the vertex angle α to be greater than or equal to 30 degrees and less than 180 degrees, the process difficulty is reduced while the metal lead 120 is ensured to have a smaller resistance value.
Optionally, the material of the first metal lead segment 121 is molybdenum, and the material of the second metal lead segment 122 is titanium or aluminum. By the arrangement, the existing process can be adopted when the first metal lead segment 121 and the second metal lead segment 122 are prepared, a new process does not need to be introduced, and the process cost is saved; in addition, titanium, aluminum and molybdenum have better bending resistance, so that the bending resistance of the metal lead 120 can be better improved, and the resistance of the metal lead 120 can be effectively reduced by matching titanium or aluminum with molybdenum, so that the accuracy of signal transmission is ensured.
FIG. 4 is a schematic diagram of another display panel in an embodiment of the invention, and FIG. 5 is a schematic cross-sectional view of the display panel along a section line B-B in FIG. 4. Alternatively, referring to fig. 4 and 5, the display panel further includes:
the planarization layer 140, the planarization layer 140 is disposed on a side of the metal lead 120 away from the flexible substrate 110;
the planarization layer 140 fills the hollow-out regions 123 of the first and second metal lead segments 121 and 122.
Specifically, because the resistant bending performance of the planarization layer 140 is better, certain buffer action can be played to the bending stress, through setting up the planarization layer 140, the stress that the metal lead 120 received when buckling can be further reduced, and because the buffer action of the planarization layer 140, when the metal lead 120 has a crack or breaks, the planarization layer 140 can play the effect of preventing the crack from spreading, thereby further improving the resistant bending performance of the metal lead 120, further ensuring the normal transmission of signals when the display panel is bent.
Specifically, before forming the planarization layer 140, the first inorganic layer 130 at the hollow area 123 of the first metal lead segment 121 adjacent to the flexible substrate 110 side may be removed in advance, so that the planarization layer 140 can fill the hollow areas 123 of the first metal lead segment 121 and the first metal lead segment 122.
Optionally, the material of the planarization layer is a photoresist material.
Fig. 6 is a schematic diagram of another display panel in the embodiment of the present invention, and optionally, referring to fig. 6, the display panel may further include:
and a second inorganic layer 150, wherein the second inorganic layer 150 is disposed on a side of the metal lead 120 adjacent to the flexible substrate 110.
Specifically, the second inorganic layer 150 is disposed on one side of the metal lead 120 close to the flexible substrate 110, so that the adhesion of the metal lead 120 is increased, and the second inorganic layer 150 can prevent water vapor and oxygen from entering the display panel, thereby reducing the corrosion probability of the metal lead 120 and further improving the reliability of signal transmission.
Fig. 7 is a schematic diagram of another display panel in the embodiment of the present invention, and optionally, referring to fig. 7, the display panel may further include:
a third inorganic layer 160, wherein the third inorganic layer 160 is disposed on a side of the metal lead 120 away from the flexible substrate 110;
the first metal lead segment 120 is located on one side of the second metal lead segment 122 adjacent to the flexible substrate 110; the third inorganic layer 160 covers the non-hollow area of the second metal lead segment 122.
Specifically, the third inorganic layer 160 can further prevent moisture and oxygen from corroding the metal lead 120, thereby further improving the reliability of signal transmission. In addition, if the third inorganic layer 160 is formed before the planarization layer 140 is formed, when the planarization layer 140 is formed, the first inorganic layer 130 and the third inorganic layer 160 in the hollow areas 123 of the first metal lead segment 121 and the second metal lead segment 122 may be removed, and then the planarization layer 140 is formed, so that the planarization layer 140 is filled in the hollow areas 123.
Optionally, the metal lead 120 is located in the display region of the flexible substrate 110. Optionally, the metal wires 120 are data lines and/or scan lines.
Specifically, the data line and the scanning line are divided into the first metal lead sections and the second metal lead sections, the first metal lead sections and the second metal lead sections are arranged in different layers, the first metal lead sections and the second metal lead sections are provided with hollow areas, the bending resistance of metal leads is improved, and the normal transmission of signals when the display panel is bent is guaranteed.
Optionally, the metal lead 120 is located in a non-display region of the flexible substrate 110.
Optionally, the metal wire 120 is at least one of a data wire, a scan wire, a clock signal wire, and a power signal wire;
the data lead is used for connecting the source electrode driving chip with a data line of the display area; the scanning lead is used for connecting the grid driving chip with the scanning line of the display area.
Specifically, the data lead, the scanning lead, the clock signal line and the power signal line are divided into a plurality of first metal lead segments and a plurality of second metal lead segments, the first metal lead segments and the second metal lead segments are arranged in different layers, the first metal lead segments and the second metal lead segments are provided with hollow areas, the bending resistance of the metal leads is improved, and the normal transmission of signals when the display panel is bent is guaranteed. In addition, if the display panel is a touch display panel, the metal leads may also be touch leads.
Fig. 8 is a schematic diagram of a display device according to an embodiment of the present invention, and referring to fig. 8, the display device 100 may include a display panel 200 according to any embodiment of the present invention. Illustratively, the display apparatus 100 may be a flexible display device such as a mobile phone, a tablet computer, a watch, and the like.
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 described 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 (11)
1. A display panel, comprising:
the flexible substrate and the metal lead are positioned on the flexible substrate;
the metal lead comprises a plurality of first metal lead segments and a plurality of second metal lead segments; along the extending direction of the metal lead, the first metal lead segment and the second metal lead segment are arranged at intervals, and the first metal lead segment and the second metal lead segment are arranged in different layers; along the extending direction of the metal lead, the adjacent first metal lead section and the second metal lead section are electrically connected;
the first metal lead segment and the second metal lead segment are provided with hollow areas;
along the extending direction of the metal lead, the hollow-out area has a first size X1; the hollow area has a second size Y1 along the direction vertical to the extending direction of the metal lead, wherein X1 is more than or equal to 5 mu m; y1 is more than or equal to 2 mu m;
the boundary of the hollow-out region can be parallel to the outer boundary of the first metal lead segment and the second metal lead segment.
2. The display panel according to claim 1, further comprising:
the first inorganic layer is arranged between the film layer where the first metal lead segment is located and the film layer where the second metal lead segment is located;
the first metal lead segment and the second metal lead segment are electrically connected through a via hole on the first inorganic layer.
3. The display panel according to claim 1, characterized in that:
the outer boundaries of the first metal lead segment and the second metal lead segment are diamond-shaped.
4. The display panel according to claim 1, further comprising:
the planarization layer is arranged on one side, away from the flexible substrate, of the metal lead;
the planarization layer fills the hollow-out areas of the first metal lead segment and the second metal lead segment.
5. The display panel according to claim 1, further comprising:
and the second inorganic layer is arranged on one side of the metal lead close to the flexible substrate.
6. The display panel according to claim 1, further comprising:
the third inorganic layer is arranged on one side, far away from the flexible substrate, of the metal lead;
the first metal lead segment is positioned on one side of the second metal lead segment close to the flexible substrate; the third inorganic layer covers the non-hollow-out area of the second metal lead segment.
7. The display panel according to claim 1, characterized in that:
the metal lead is located in a display area of the flexible substrate.
8. The display panel according to claim 7, wherein:
the metal lead is a data line and/or a scanning line.
9. The display panel according to claim 1, characterized in that:
the metal lead is positioned in a non-display area of the flexible substrate.
10. The display panel according to claim 9, wherein:
the metal lead is at least one of a data lead, a scanning lead, a clock signal wire and a power signal wire;
the data lead is used for connecting the source electrode driving chip with a data line of the display area; the scanning lead is used for connecting the grid driving chip with the scanning line of the display area.
11. A display device characterized by comprising the display panel according to any one of claims 1 to 10.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710217336.7A CN108694890B (en) | 2017-04-05 | 2017-04-05 | Display panel and display device |
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| CN201710217336.7A CN108694890B (en) | 2017-04-05 | 2017-04-05 | Display panel and display device |
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| CN108694890A CN108694890A (en) | 2018-10-23 |
| CN108694890B true CN108694890B (en) | 2021-05-25 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109671354A (en) * | 2018-12-05 | 2019-04-23 | 武汉华星光电半导体显示技术有限公司 | A kind of bent area Wiring structure and its display device |
| CN109410765A (en) | 2018-12-13 | 2019-03-01 | 武汉华星光电技术有限公司 | Display panel and its frame substrate |
| CN109830510B (en) * | 2019-01-09 | 2021-03-16 | 云谷（固安）科技有限公司 | Stretchable display panel and display device |
| CN109686776B (en) * | 2019-01-29 | 2020-11-24 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN113744650B (en) * | 2019-04-29 | 2023-06-16 | 昆山工研院新型平板显示技术中心有限公司 | Array substrate and flexible display device |
| KR20220002005A (en) | 2020-06-30 | 2022-01-06 | 엘지디스플레이 주식회사 | Foldable display device |
| WO2023044679A1 (en) * | 2021-09-23 | 2023-03-30 | 京东方科技集团股份有限公司 | Display substrate and display apparatus |
| CN114758582A (en) * | 2022-05-17 | 2022-07-15 | 云谷（固安）科技有限公司 | Display panel and manufacturing method thereof |
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| CN103700322A (en) * | 2013-12-27 | 2014-04-02 | 京东方科技集团股份有限公司 | Array substrate and display device |
| CN106206613A (en) * | 2016-08-24 | 2016-12-07 | 昆山工研院新型平板显示技术中心有限公司 | A kind of flexible display substrates and preparation method thereof |
| CN106205394A (en) * | 2016-09-05 | 2016-12-07 | 京东方科技集团股份有限公司 | A kind of flexible display panels, display device and manufacture method |
| CN106486500A (en) * | 2016-12-28 | 2017-03-08 | 京东方科技集团股份有限公司 | Flexible array substrate and its manufacture method, flexible display panels and display device |
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| CN103700322A (en) * | 2013-12-27 | 2014-04-02 | 京东方科技集团股份有限公司 | Array substrate and display device |
| CN106206613A (en) * | 2016-08-24 | 2016-12-07 | 昆山工研院新型平板显示技术中心有限公司 | A kind of flexible display substrates and preparation method thereof |
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