CN114783291B - Display substrate, flexible circuit board and display device - Google Patents
Display substrate, flexible circuit board and display device Download PDFInfo
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- CN114783291B CN114783291B CN202210403945.2A CN202210403945A CN114783291B CN 114783291 B CN114783291 B CN 114783291B CN 202210403945 A CN202210403945 A CN 202210403945A CN 114783291 B CN114783291 B CN 114783291B
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- 239000000758 substrate Substances 0.000 title claims abstract description 35
- 230000037303 wrinkles Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Structure Of Printed Boards (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention relates to a display substrate, which comprises a display area and a non-display area positioned at the periphery of the display area, wherein the non-display area comprises a first area along a first direction, a protruding part extends out of one side of the first area away from the display area along the first direction, and the protruding part comprises a first subarea, a second subarea and a third subarea positioned at two opposite sides of the first subarea in a second direction perpendicular to the first direction; the first subregion is provided with a first binding region used for binding and connecting with the flip chip film, and the second subregion and the third subregion are partially concave and are in special-shaped arrangement; the first sub-area is further provided with a first connection area and a second connection area which are used for being connected with the flexible circuit board, and in the second direction, the first connection area and the second connection area are located on two opposite sides of the first binding area.
Description
Technical Field
The invention relates to the technical field of manufacturing of display products, in particular to a display substrate, a flexible circuit board and a display device.
Background
At present, in order to save the space of the whole mobile phone, the tongue area of the Panel is different from the traditional rectangular design, and the special design is adopted, however, when the PAD binding process is carried out, the action range of the COF (chip on film) on the Panel is limited to the COF width area, so that wrinkles are formed at the edge of the Panel, and finally bright lines are caused.
Disclosure of Invention
In order to solve the technical problems, the invention provides a display substrate, a flexible circuit board and a display device, which solve the problems that the pulling force acting range of a flip chip film on a panel is limited to the width area of the flip chip film, so that wrinkles are formed at the edge of the panel and finally bright lines are caused.
In order to achieve the above purpose, the technical scheme adopted by the embodiment of the invention is as follows: a display substrate, comprising a display area and a non-display area positioned at the periphery of the display area, wherein the non-display area comprises a first area along a first direction, a protruding part extends out of one side of the first area away from the display area along the first direction, and the protruding part comprises a first subarea, a second subarea and a third subarea positioned at two opposite sides of the first subarea along a second direction perpendicular to the first direction;
the first subregion is provided with a first binding region used for binding and connecting with the flip chip film, and the second subregion and the third subregion are partially concave and are in special-shaped arrangement;
the first sub-area is further provided with a first connection area and a second connection area which are used for being connected with the flexible circuit board, and in the second direction, the first connection area and the second connection area are located on two opposite sides of the first binding area.
Optionally, in the second direction, the first binding area is located in the middle of the first sub-area, and the first connection area and the second connection area are symmetrically disposed on two sides of the first binding area.
Optionally, in the second direction, the first sub-region includes a first portion and a second portion symmetrically disposed on opposite sides of the first binding region, in the second direction, the first connection region is located in a middle portion of the first portion, and the second connection region is located in a middle portion of the second portion.
Optionally, in the second direction, the length of the first connection region is greater than or equal to 1/3 of the length of the first portion, and the length of the second connection region is greater than or equal to 1/3 of the length of the second portion.
Optionally, the first connection region and the second connection region are each a continuous region.
Optionally, in the second direction, the first connection region includes a plurality of first sub-connection regions disposed at intervals, and the second connection region includes a plurality of second sub-connection regions disposed at intervals.
Optionally, in the first direction, the length of the first connection region is less than or equal to the length of the first binding region, and the length of the second connection region is less than or equal to the length of the first binding region.
The embodiment of the invention also provides a flexible circuit board which comprises a second binding area used for binding and connecting with the flip chip film, and a third connecting area used for connecting with the first connecting area on the display substrate and a fourth connecting area used for connecting with the second connecting area on the display substrate, wherein the third connecting area and the fourth connecting area are positioned on two opposite sides of the second binding area.
Optionally, the third connection region and the fourth connection region are symmetrically disposed on opposite sides of the second binding region.
Optionally, the third connection region and the fourth connection region are each continuous regions.
Optionally, in the second direction, the third connection region includes a plurality of third sub-connection regions disposed at intervals, and the fourth connection region includes a plurality of fourth sub-connection regions disposed at intervals.
The embodiment of the invention also provides a display device, which comprises the display substrate, the flip chip film and the flexible circuit board, wherein the flip chip film comprises a first end and a second end which are opposite, the first end is provided with a first binding part used for binding connection with the first binding region, and the second end is provided with a second binding part used for binding connection with the flexible circuit board.
The beneficial effects of the invention are as follows: the first connecting area and the second connecting area are connected with the flexible circuit board, so that the stress range of the panel is enlarged and wrinkles are avoided on the basis of not increasing the width of the flip chip film.
Drawings
Fig. 1 is a schematic view showing a structure of a display device in the related art;
FIG. 2 is a schematic diagram showing a structure of a display substrate according to an embodiment of the invention;
fig. 3 is a schematic view showing a part of the structure of a flexible circuit board in the embodiment of the invention;
fig. 4 is a schematic structural diagram of a display device according to an embodiment of the present invention.
1, displaying a substrate; 2 a flip chip film; 3, a flexible circuit board; 10 pleat regions; 11 a projection; 101 a first sub-region; 12 a second sub-region; 13 a third subregion; 111 a first binding area; 31 a second binding area; 32 a third connection region; 33 fourth connection region.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the invention, fall within the scope of protection of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, unlike the conventional rectangular design, the Panel tongue region is configured in a profile, but when PAD bonding is performed, a range of a pulling force applied to the Panel by a COF (chip on film) is limited to a COF width region, which results in forming wrinkles (refer to the wrinkle region 10 in fig. 1) at the Panel edge, and finally, bright lines.
Referring to fig. 2 and 4, in view of the above technical problems, the present embodiment provides a display substrate 1 including a display area and a non-display area located at the periphery of the display area, the non-display area including a first area along a first direction (refer to X direction in fig. 2), and a protrusion 11 extending from a side of the first area away from the display area along the first direction, the protrusion 11 including a first sub-area 101 and a second sub-area 102 and a third sub-area 103 located at opposite sides of the first sub-area 101 in a second direction (refer to Y direction in fig. 2) perpendicular to the first direction;
a first binding region 111 for binding and connecting with the flip chip film 2 is arranged on the first sub-region 101, and the second sub-region 102 and the third sub-region 103 are both partially concave and are in special-shaped arrangement;
the first sub-area 101 is further provided with a first connection area and a second connection area for connection with the flexible circuit board 3, and in the second direction, the first connection area and the second connection area are located on opposite sides of the first binding area 111.
The display substrate 1 is connected with the flexible circuit board 3 through the flip chip film 2, the first binding area 111 is used for binding and connecting with the flip chip film 2, the first connection area and the second connection area are both connected with the flexible circuit board 3, that is, under the premise of not increasing the width of the flip chip film 2 in the second direction, the first connection area and the second connection area are additionally arranged to be connected with the flexible circuit board 3, so that the stress area of the protruding part 11 is increased, and the occurrence of wrinkles is avoided.
Illustratively, in the second direction, the first binding area 111 is located in the middle of the first sub-area 101, and the first connection area and the second connection area are symmetrically disposed on two sides of the first binding area 111.
The first connection area and the second connection area are symmetrically arranged at two sides of the first binding area 111, so that the stress of the protruding portion 11 is uniform, and wrinkles are effectively avoided.
Illustratively, in the second direction, the first sub-region 101 includes a first portion and a second portion symmetrically disposed on opposite sides of the first binding region 111, and in the second direction, the first connection region is located at a middle portion of the first portion, and the second connection region is located at a middle portion of the second portion.
Illustratively, in the second direction, the length of the first attachment region is greater than or equal to 1/3 of the length of the first portion and the length of the second attachment region is greater than or equal to 1/3 of the length of the second portion.
It should be noted that, in the second direction, the first connection area is located at the middle of the first portion, and the second connection area is located at the middle of the second portion, so as to effectively avoid wrinkles, where the ratio of the length of the first connection area to the first portion may be set according to actual needs, and the ratio of the length of the second connection area to the second portion may also be set according to actual needs.
It should be noted that, the length of the first connection region is smaller than the length of the first portion, and the length of the second connection region is smaller than the length of the second portion, that is, a gap is formed between the first connection region and the first bonding region 111, and a gap is formed between the second connection region and the first bonding region 111, so that the bonding connection between the flip chip film 2 and the display substrate 1 is prevented from being affected by the arrangement of the first connection region and the second connection region.
The specific structural forms of the first connection region and the second connection region may be various, and several structural forms in this embodiment are described below.
Illustratively, the first and second connection regions are each a continuous region. The provision of the continuous region simplifies the manufacturing process.
In the second direction, the first connection region includes a plurality of first sub-connection regions disposed at intervals, and the second connection region includes a plurality of second sub-connection regions disposed at intervals.
Illustratively, in the first direction, the length of the first connection region is less than or equal to the length of the first binding region 111, and the length of the second connection region is less than or equal to the length of the first binding region 111.
By adopting the scheme, the interference of the arrangement of the first connecting region and the second connecting region on the arrangement of other devices can be avoided.
Referring to fig. 3 and 4, the embodiment of the present invention further provides a flexible circuit board 3, which includes a second bonding area 31 for bonding with the flip chip film 2, and a third bonding area 32 for connecting with the first bonding area on the display substrate 1, and a fourth bonding area 33 for connecting with the second bonding area on the display substrate 1, wherein the third bonding area 32 and the fourth bonding area 33 are located at opposite sides of the second bonding area 31.
The display substrate 1 is connected with the flexible circuit board 3 through the flip chip film 2, the third connection area 32 is connected with the first connection area of the display substrate 1, the fourth connection area 33 is connected with the second connection area of the display substrate 1, and the display substrate 1 is connected with the flexible circuit board 3 through the connection mode on the premise of not increasing the width of the flip chip film 2 in the second direction, so that the stress area of the protruding part 11 is increased, and the occurrence of wrinkles is avoided.
It should be noted that the connection between the first connection region and the third connection region 32 and the connection between the second connection region and the fourth connection region 33 are virtual connections, for example, only by bonding with an adhesive layer, and do not have any actual functions such as signal transmission.
Illustratively, the third connecting region 32 and the fourth connecting region 33 are symmetrically disposed on opposite sides of the second binding region 31.
The third connection area 32 and the fourth connection area 33 are symmetrically arranged, so that the stress of the display substrate 1 is uniform, and wrinkles are effectively avoided.
Illustratively, the third land 32 and the fourth land 33 are each continuous areas.
Illustratively, in the second direction, the third connection region 32 includes a plurality of third sub-connection regions disposed at intervals, and the fourth connection region 33 includes a plurality of fourth sub-connection regions disposed at intervals.
The third sub-connection area and the fourth sub-connection area are arranged at intervals, so that cost can be reduced.
The embodiment of the invention also provides a display device, which comprises the display substrate 1, the flip chip film 2 and the flexible circuit board 3, wherein the flip chip film 2 comprises a first end and a second end which are opposite, the first end is provided with a first binding part used for binding connection with the first binding region 111, and the second end is provided with a second binding part used for binding connection with the flexible circuit board 3.
The first connection area of the display substrate 1 is correspondingly connected with the third connection area 32 of the flexible circuit board 3, and the second connection area of the display substrate 1 is correspondingly connected with the fourth connection area 33 of the flexible circuit board 3, so that the stress area of the protruding portion 11 is increased, the generation of wrinkles is reduced, and the wrinkles can be even eliminated.
Illustratively, the first and second connection regions are each continuous regions, the third and fourth connection regions 32, 33 are each continuous regions, and the shape of the third connection region 32 conforms to the shape of the first connection region, and the shape of the fourth connection region 33 conforms to the shape of the second connection region.
Illustratively, the first connection region includes a plurality of first sub-connection regions arranged at intervals along the second direction, and the third connection region 32 includes a plurality of third sub-connection regions arranged at intervals along the second direction, and the plurality of third sub-connection regions are arranged in one-to-one correspondence with the plurality of first sub-connection regions. The second connection region includes a plurality of second sub-connection regions arranged at intervals along the second direction, and the fourth connection region 33 includes a plurality of fourth sub-connection regions arranged at intervals along the second direction, where the plurality of fourth sub-connection regions are arranged in one-to-one correspondence with the plurality of second sub-connection regions.
The first connection region is a patterned structure having a first pattern, the third connection region 32 is a patterned structure corresponding to the first pattern, for example, the first pattern is a hollowed-out pattern, the second connection region is a patterned structure having a second pattern, and the fourth connection region 33 is a patterned structure corresponding to the second pattern, preferably, the first pattern is the same as the second pattern, so that the stress of the display substrate 1 is uniform (it should be noted that the protruding portion 11 is a solid whole, and the patterned structure is only a pattern disposed on the surface of the protruding portion and has no hollowed-out structure).
The display device may be: any product or component with display function such as a liquid crystal television, a liquid crystal display, a digital photo frame, a mobile phone, a tablet personal computer and the like, wherein the display device further comprises a flexible circuit board, a printed circuit board and a backboard.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (12)
1. A display substrate comprising a display area and a non-display area located at the periphery of the display area, wherein the non-display area comprises a first area along a first direction, a protruding part extends out of one side of the first area away from the display area along the first direction, and the protruding part comprises a first sub-area and a second sub-area and a third sub-area located at two opposite sides of the first sub-area along a second direction perpendicular to the first direction;
the first subregion is provided with a first binding region used for binding and connecting with the flip chip film, and the second subregion and the third subregion are partially concave and are in special-shaped arrangement;
the first sub-area is further provided with a first connection area and a second connection area which are used for being connected with the flexible circuit board, and in the second direction, the first connection area and the second connection area are located on two opposite sides of the first binding area.
2. The display substrate according to claim 1, wherein in the second direction, the first bonding region is located in a middle portion of the first sub-region, and the first connection region and the second connection region are symmetrically disposed at both sides of the first bonding region.
3. The display substrate according to claim 2, wherein in the second direction, the first sub-region includes a first portion and a second portion symmetrically disposed on opposite sides of the first bonding region, and in the second direction, the first connection region is located at a middle portion of the first portion, and the second connection region is located at a middle portion of the second portion.
4. A display substrate according to claim 3, wherein in the second direction the length of the first connection region is greater than or equal to 1/3 of the length of the first portion and the length of the second connection region is greater than or equal to 1/3 of the length of the second portion.
5. The display substrate of claim 2, wherein the first connection region and the second connection region are each a continuous region.
6. The display substrate according to claim 1, wherein in the second direction, the first connection region includes a plurality of first sub-connection regions arranged at intervals, and the second connection region includes a plurality of second sub-connection regions arranged at intervals.
7. The display substrate of claim 1, wherein in the first direction, a length of the first connection region is less than or equal to a length of the first bonding region, and a length of the second connection region is less than or equal to a length of the first bonding region.
8. A flexible circuit board comprising a second bonding region for bonding with a flip chip film, and a third bonding region for connecting with the first bonding region on a display substrate according to any one of claims 1 to 7, and a fourth bonding region for connecting with the second bonding region on a display substrate according to any one of claims 1 to 7, the third and fourth bonding regions being located on opposite sides of the second bonding region.
9. The flexible circuit board of claim 8 wherein the third connection region and the fourth connection region are symmetrically disposed on opposite sides of the second binding region.
10. The flexible circuit board of claim 9 wherein the third connection region and the fourth connection region are each continuous regions.
11. The flexible circuit board of claim 9 wherein in the second direction, the third connection region comprises a plurality of third sub-connection regions disposed at intervals, and the fourth connection region comprises a plurality of fourth sub-connection regions disposed at intervals.
12. A display device, comprising the display substrate of any one of claims 1-7, a flip chip film and the flexible circuit board of any one of claims 8-11, wherein the flip chip film comprises a first end and a second end opposite to each other, the first end is provided with a first binding portion for binding connection with the first binding region, and the second end is provided with a second binding portion for binding connection with the flexible circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210403945.2A CN114783291B (en) | 2022-04-18 | 2022-04-18 | Display substrate, flexible circuit board and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210403945.2A CN114783291B (en) | 2022-04-18 | 2022-04-18 | Display substrate, flexible circuit board and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114783291A CN114783291A (en) | 2022-07-22 |
| CN114783291B true CN114783291B (en) | 2023-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210403945.2A Active CN114783291B (en) | 2022-04-18 | 2022-04-18 | Display substrate, flexible circuit board and display device |
Country Status (1)
| Country | Link |
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| CN (1) | CN114783291B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826353A (en) * | 2016-03-25 | 2016-08-03 | 京东方科技集团股份有限公司 | Chip on film and display device |
| CN108376519A (en) * | 2018-04-27 | 2018-08-07 | 上海中航光电子有限公司 | A kind of abnormity display panel and preparation method thereof, display device |
| CN111048574A (en) * | 2019-12-30 | 2020-04-21 | 厦门天马微电子有限公司 | Display panel and display device |
| CN210836909U (en) * | 2020-02-20 | 2020-06-23 | 北京京东方光电科技有限公司 | Display substrate and display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102432349B1 (en) * | 2015-12-15 | 2022-08-16 | 삼성디스플레이 주식회사 | flexible display device |
-
2022
- 2022-04-18 CN CN202210403945.2A patent/CN114783291B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826353A (en) * | 2016-03-25 | 2016-08-03 | 京东方科技集团股份有限公司 | Chip on film and display device |
| CN108376519A (en) * | 2018-04-27 | 2018-08-07 | 上海中航光电子有限公司 | A kind of abnormity display panel and preparation method thereof, display device |
| CN111048574A (en) * | 2019-12-30 | 2020-04-21 | 厦门天马微电子有限公司 | Display panel and display device |
| CN210836909U (en) * | 2020-02-20 | 2020-06-23 | 北京京东方光电科技有限公司 | Display substrate and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114783291A (en) | 2022-07-22 |
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