CN111554202B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN111554202B CN111554202B CN202010461474.1A CN202010461474A CN111554202B CN 111554202 B CN111554202 B CN 111554202B CN 202010461474 A CN202010461474 A CN 202010461474A CN 111554202 B CN111554202 B CN 111554202B
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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
- G09F9/33—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 being semiconductor devices, e.g. diodes
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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
- G09F9/35—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 being liquid crystals
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
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Abstract
The invention provides a display panel and a display device, comprising a binding area; the binding area is provided with a driving chip, the driving chip comprises a first substrate and a blank area positioned on the first substrate, and the blank area is positioned in an included angle area between two adjacent side edges of the first substrate; the bonding region comprises a supporting structure, the supporting structure is arranged on the display panel and is located between the display panel and the driving chip, the supporting structure comprises a plurality of substructures, each substructure at least comprises a long-strip-shaped first part, and the extending direction of the first part is different from the extending direction of the shortest side edge of the first substrate. Because in the direction perpendicular to the first substrate, the projection of the supporting structure is at least partially overlapped with the projection of the blank area, when the driving chip is attached, the supporting structure can support the corners of the driving chip, namely the blank area between two adjacent sides, so that the tilting or breaking of the driving chip is avoided, and the manufacturing yield of the display panel is improved.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
In the manufacturing process of the display device, the driving chip needs to be attached and bound to the display panel, but when the driving chip is attached, the driving chip is prone to tilting or breaking, which affects the manufacturing yield of the display panel.
Disclosure of Invention
In view of this, the present invention provides a display panel and a display device to solve the problem that the driving chip is easily tilted or broken when attached.
In order to achieve the purpose, the invention provides the following technical scheme:
a display panel includes a bonding region;
the binding area is provided with a driving chip, the driving chip comprises a first substrate and a blank area positioned on the first substrate, and the blank area is positioned in an included angle area between two adjacent side edges of the first substrate;
the bonding region comprises a supporting structure, the supporting structure is arranged on the display panel, and the supporting structure is positioned between the display panel and the driving chip;
the supporting structure comprises a plurality of substructures, wherein each substructure at least comprises an elongated first part, and the extending direction of the first part is different from the extending direction of the shortest side edge of the first substrate;
in a direction perpendicular to the first substrate, a projection of the support structure at least partially overlaps a projection of the blank region.
A display device comprising a display panel as claimed in any one of the above.
Compared with the prior art, the technical scheme provided by the invention has the following advantages:
according to the display panel and the display device provided by the invention, the binding area of the display panel is provided with the supporting structure, the supporting structure is positioned between the display panel and the driving chip, and the projection of the supporting structure is at least partially overlapped with the projection of the blank area in the direction vertical to the first substrate, so that when the driving chip is attached, the supporting structure can support the corner of the driving chip, namely the blank area between two adjacent side edges, so that the tilting or breaking of the driving chip is avoided, and the manufacturing yield of the display panel is improved.
In addition, the supporting structure comprises a plurality of sub-structures, the sub-structures at least comprise the strip-shaped first part, and the extending direction of the first part is different from the extending direction of the shortest side edge of the first substrate, so that the wiring on the display panel can be reused as the supporting structure, the manufacturing process can be simplified, and the manufacturing cost can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating a structure of a driving chip attached to a display panel in the prior art;
fig. 2 is a schematic top view illustrating a display panel bound with a driver chip according to an embodiment of the present invention;
fig. 3 is a schematic top view of a driving chip according to an embodiment of the present invention;
fig. 4 is a schematic top view illustrating a display panel without a driver chip according to an embodiment of the invention;
FIG. 5 is a schematic cross-sectional view of the display panel shown in FIG. 2 along a cutting line AA';
fig. 6 is a schematic top view illustrating a portion of a display panel bound with a driver chip according to another embodiment of the invention;
fig. 7 is a schematic top view illustrating a portion of a display panel bound with a driver chip according to another embodiment of the invention;
fig. 8 is a schematic top view illustrating a portion of a display panel bound with a driver chip according to another embodiment of the invention;
fig. 9 is a schematic top view illustrating a portion of a display panel bound with a driver chip according to another embodiment of the invention;
fig. 10 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
As described in the background art, the attached driving chip is prone to warping or breaking. The inventor has found that the reason for such a problem is mainly that, as shown in fig. 1, fig. 1 is a schematic diagram of a structure in which a driving chip is attached to a display panel in the prior art, and a corner of the driving chip 10 is not provided with any structure, when the driving chip 10 is pressed to attach the driving chip 10 to the display panel 11, the corner of the driving chip 10 is pressed down, so that the driving chip 10 is tilted or broken.
Accordingly, the present invention is directed to a display panel and a display device to overcome the above problems of the prior art, the display panel including a binding region;
the binding area is provided with a driving chip, the driving chip comprises a first substrate and a blank area positioned on the first substrate, and the blank area is positioned in an included angle area between two adjacent side edges of the first substrate; the bonding region comprises a supporting structure, the supporting structure is arranged on the display panel, and the supporting structure is positioned between the display panel and the driving chip; the supporting structure comprises a plurality of substructures, wherein each substructure at least comprises an elongated first part, and the extending direction of the first part is different from the extending direction of the shortest side edge of the first substrate; in a direction perpendicular to the first substrate, a projection of the support structure at least partially overlaps a projection of the blank region.
According to the display panel and the display device provided by the invention, the binding area of the display panel is provided with the supporting structure, the supporting structure is positioned between the display panel and the driving chip, and the projection of the supporting structure is at least partially overlapped with the projection of the blank area in the direction vertical to the first substrate, so that when the driving chip is attached, the supporting structure can play a role of supporting the corner of the driving chip, namely the blank area between two adjacent side edges, thereby avoiding the tilting or breaking of the driving chip and improving the manufacturing yield of the display panel.
In addition, the supporting structure comprises a plurality of sub-structures, the sub-structures at least comprise the strip-shaped first part, and the extending direction of the first part is different from the extending direction of the shortest side edge of the first substrate, so that the wiring on the display panel can be reused as the supporting structure, the manufacturing process can be simplified, and the manufacturing cost can be reduced.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, so that the above is the core idea of the present invention, and the above objects, features and advantages of the present invention can be more clearly understood. 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.
The embodiment of the invention provides a display panel which comprises a liquid crystal display panel, an OLED display panel, an LED display panel and the like. As shown in fig. 2, fig. 2 is a schematic top view of a display panel bound with a driver chip according to an embodiment of the present invention, where the display panel 2 includes a binding region B, and the binding region B is provided with the driver chip 20.
The display panel 2 includes a display area X1 and a non-display area X2 located at the periphery of the display area X1, and the binding area B is located in the non-display area X2. The non-display area X2 may be located around the display area X1, or located on both upper and lower sides of the display area X1, which is not limited in the present invention.
In an embodiment of the present invention, as shown in fig. 3, fig. 3 is a schematic top view structure diagram of a driving chip according to an embodiment of the present invention, the driving chip 20 includes a first substrate 200 and a blank region located on the first substrate 200, and the blank region is located in an included angle region between two adjacent side edges of the first substrate 200. Of course, other regions of the first substrate 200 in the embodiment of the present invention also have blank regions, but the present invention is only described with respect to the blank regions on the corners of the first substrate 200.
Alternatively, the first substrate 200 includes two blank regions K1 and K2; the first substrate 200 includes a first side C1, a second side C2, a third side C3 and a fourth side C4 connected in sequence, one blank region K1 is located at an angle region between the first side C1 and the second side C2, and another blank region K2 is located at an angle region between the first side C1 and the fourth side C4. Of course, in the embodiment of the present invention, only the first substrate 200 includes two blank areas K1 and K2 for illustration, in other embodiments, the first substrate 200 may include one, three or four blank areas, and the positions of the two blank areas may also be different, for example, they are located on diagonal lines, and are not described herein again.
In the embodiment of the present invention, the first substrate 200 of the driving chip 20 has a first connection terminal 201 and a second connection terminal 202 thereon. The first connection terminal 201 is connected to a main flexible printed circuit board bound to the display panel 2, and the main flexible printed circuit board inputs signals to the driving chip 20 through the first connection terminal 201. The second connection terminal 202 is connected to the third connection terminal 21 on the display panel 2, and the driving chip 20 outputs a signal to the display panel 2 through the second connection terminal 202 and the third connection terminal 21. The blank area on the first substrate 200 is an area without the first connection terminal 201 and the second connection terminal 202 and located at an included angle between adjacent sides of the first substrate 200.
As shown in fig. 4, fig. 4 is a schematic top view of a display panel without a driver chip bonded thereto according to an embodiment of the present invention, wherein a bonding region B of the display panel 2 includes a supporting structure, and the supporting structure is disposed on the display panel 2. Optionally, the binding region B includes two support structures Z1 and Z2, the two support structures Z1 and Z2 being symmetrically arranged in a direction parallel to the second side C2.
And, in a direction perpendicular to the first substrate 200, a projection of the support structure at least partially overlaps a projection of the blank area. Optionally, in a direction perpendicular to the first substrate 200, a projection of one support structure Z1 at least partially overlaps a projection of one blank area K1, and a projection of the other support structure Z2 at least partially overlaps a projection of the other blank area K2. Wherein the projection of the support structure, e.g. Z1, may overlap partially or completely with the projection of the void, e.g. K1.
In the embodiment of the present invention, the number of the support structures is determined by the number of the blank areas, and the positions of the support structures are also determined by the positions of the blank areas, that is, the support structures and the blank areas are correspondingly disposed.
As shown in fig. 5, fig. 5 is a schematic cross-sectional view of the display panel shown in fig. 2 along a cutting line AA', and support structures such as Z1 and Z2 are located between the display panel 2 and the driving chip 20. Alternatively, the thickness of the support structures such as Z1 and Z2 is the same as or similar to the thickness of the connection terminals on the driving chip 20. Of course, the invention is not limited thereto, and in other embodiments, the thickness of the supporting structures such as Z1 and Z2 can be set according to the distance between the blank area of the driving chip 20 and the display panel 2.
Since the supporting structures such as Z1 and Z2 are located between the display panel 2 and the driving chip 20, and the projection of the supporting structure such as Z1 at least partially overlaps the projection of the blank region such as K1 in the direction perpendicular to the first substrate 200, when the driving chip 20 is attached, the supporting structures such as Z1 and Z2 support the corners of the driving chip 20, that is, the blank regions such as K1 and K2 between two adjacent side edges, so that the corners of the driving chip 20 are prevented from being warped or broken, and the manufacturing yield of the display panel is improved.
In the embodiment of the present invention, as shown in fig. 2, the supporting structure includes a plurality of sub-structures, each of the sub-structures at least includes a first elongated portion Z0, and the extending direction of the first portion Z0 is different from the extending direction of the shortest side edge, i.e., the side edge C2, of the first substrate 200. Since the extending direction of the traces on the display panel 2 is different from the extending direction of the shortest side of the first substrate 200, the traces on the display panel 2 can be reused as a supporting structure, so that the manufacturing process can be simplified, and the manufacturing cost can be reduced.
In the embodiment of the present invention, a part of the traces on the display panel 2 are located in the bonding area B, that is, the bonding area B further includes a connection terminal and a trace connected to the connection terminal. As shown in fig. 4, the display region X1 of the display panel 2 includes a gate line G, a data line D, and a pixel unit 22 surrounded by the gate line G and the data line D, and the non-display region X2 includes a gate driving circuit 23 and a binding region B, and the binding region B further includes a third connection terminal 21 and a fourth connection terminal 24. The third connection terminal 21 is connected to the second connection terminal 202 on the driver chip 20, and the fourth connection terminal 24 is connected to the first connection terminal 201 on the driver chip 20. The third connection terminal 21 is connected to the data line D and the gate driving circuit 23 through the trace 25 to output a data signal to the data line D, output a control signal, a clock signal, and the like to the gate driving circuit 23, and control the gate driving circuit 23 to sequentially output a scan signal to the gate line G, so that the pixel unit 22 displays an image under the driving of the scan signal and the data signal.
Optionally, the sub-structure of the support structure in the embodiment of the present invention may include the trace 25, for example, the extending direction of the first portion Z0 of the sub-structure is the same as the extending direction of the trace 25, and the first portion Z0 is located on the surface of the trace 25, that is, the thickness of the trace 25 is increased by the first portion Z0, so that the multiplexing trace 25 is used as the support structure, the manufacturing process is simplified, and the manufacturing cost is reduced.
Of course, the invention is not limited to this, and in other embodiments, the support structure may not multiplex the traces 25 on the display panel 2, that is, the extending direction of the first part Z0 of the sub-structure may be different from the extending direction of the traces 25. As shown in fig. 6 to 8, fig. 6 is a schematic diagram of a partial top view structure of a display panel bound with a driver chip according to another embodiment of the present invention, fig. 7 is a schematic diagram of a partial top view structure of a display panel bound with a driver chip according to another embodiment of the present invention, fig. 8 is a schematic diagram of a partial top view structure of a display panel bound with a driver chip according to another embodiment of the present invention, a blank region such as K1 and K2 is a triangular region, the triangular region includes a first side S1, a second side S2 and a third side S3, the first side S1 is parallel to a longest side of the first substrate 200 such as C1, and the second side S2 is parallel to a shortest side of the first substrate 200 such as C2. In the embodiment of the present invention, the blank regions, such as the regions K1 and K2, which are triangular, are only used as an example for description, but not limited thereto, and in other embodiments, the blank regions may be rectangular or trapezoidal, and the shape of the supporting structure may be adjusted according to the shape of the blank regions, which is not described herein.
As shown in fig. 6, the extending direction of the plurality of first portions Z0 is parallel to the first side S1, and the connecting line of the first ends of the plurality of first portions Z0 is parallel to the third side S3. Alternatively, as shown in fig. 7, the extending direction of the plurality of first portions Z0 is parallel to the third side S3, and the connecting line of the first ends of the first portions Z0 is parallel to the first side S1. Alternatively, as shown in fig. 8, the connection lines of the first ends of the plurality of first portions Z0 are parallel to the third side S3, and the connection lines of the second ends of the portion first portions Z0 are parallel to the first side S1. Based on this, the supporting function is performed by the first portion Z0, and the supporting structure is not connected to the driving chip 20 and the connection terminals on the display panel 2, so that the normal operation of the driving chip 20 and the display panel 2 is not affected.
Optionally, in an embodiment of the present invention, the connection lines of the second ends of at least some of the first portions Z0 are parallel to the second side S2, that is, the connection lines of the second ends of some of the first portions Z0 may be parallel to the second side S2, for example, the connection lines of the second ends of odd-numbered first portions Z0 are parallel to the second side S2, or the connection lines of the second ends of even-numbered first portions Z0 are parallel to the second side S2, or the connection lines of the second ends of all of the first portions Z0 may be parallel to the second side S2, so that the support forces received by the second side S2, that is, the second side C2 of the driving chip 20, are uniformly distributed.
In an embodiment of the present invention, the sub-structure may only include the first portion Z0, or may include other portions connected to the first portion Z0, as shown in fig. 8 and 9, fig. 9 is a partial schematic top view structure diagram of a display panel bound with a driving chip according to another embodiment of the present invention, and the sub-structure further includes an elongated second portion Z3, the second portion Z3 is connected to the first portion Z0, and an extending direction of the second portion Z3 is the same as an extending direction of a shortest side edge, such as C2, of the first substrate 200, so that the driving chip 20 is supported by supporting forces in different directions when being attached, thereby avoiding fluctuation when being attached, and improving the attachment accuracy.
Optionally, in a direction perpendicular to the first substrate 200, a projection of a shortest side of the first substrate 200, such as C2, intersects with a projection of at least a part of the first portion Z0, that is, at least a part of the first portion Z0 of the supporting structure extends from the inside of the driving chip 20 to the outside of the driving chip 20, so as to prevent the driving chip 20 from fluctuating in the extending direction of the first portion Z0 during attaching, that is, from fluctuating left and right, thereby preventing left and right supporting forces of the driving chip 20 caused by the left and right fluctuations from being different, and further improving the attaching accuracy.
Optionally, in the embodiment of the present invention, the widths of any two sub-structures are equal, and/or any two sub-structures are arranged in parallel; and/or the spacing between any two substructures is equal. Optionally, the widths of any two first portions Z0 perpendicular to the extending direction thereof are equal, and/or any two first portions Z0 are arranged in parallel, and/or the spacing between any two first portions Z0 is equal, so that the substructures have the same surface topography and the same etching amount, and the manufacturing process of the support structure is simplified.
In an embodiment of the present invention, the sub-structure includes at least a first metal layer and a second metal layer stacked in a direction perpendicular to the first substrate 200. Alternatively, the first portion Z0 includes a first metal layer and a second metal layer stacked in a direction perpendicular to the first substrate 200, i.e., the first portion Z0 is composed of two layers of metals.
The first metal layer and the second metal layer may be additionally added metal layers, and certainly, in order to simplify the process and save the cost, the original metal layers on the display panel 2 may also be reused, that is, the first metal layer and one metal layer of the multiple metal layers on the display panel 2 are disposed on the same layer, and the second metal layer and another metal layer of the multiple metal layers on the display panel 2 are disposed on the same layer.
The multi-layer metal layers include a gate line layer, i.e., a metal layer where the gate line is located, a data line layer, i.e., a metal layer where the data line is located, and a touch electrode layer, i.e., a metal layer where the touch electrode is located. That is, in the embodiment of the invention, the gate line layer, the data line layer and/or the touch electrode layer at the position corresponding to the blank region in the binding region B are reserved to form the supporting structure.
An embodiment of the present invention further provides a display device, as shown in fig. 10, fig. 10 is a schematic structural diagram of a display device according to an embodiment of the present invention, where the display device includes the display panel provided in any one of the above embodiments, the display panel includes, but is not limited to, a liquid crystal display panel, an OLED display panel, and the like, and the display device includes, but is not limited to, a mobile phone, a tablet computer, a television, a digital camera, and the like.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A display panel, comprising a bonding area;
the binding area is provided with a driving chip, the driving chip comprises a first substrate and a blank area positioned on the first substrate, and the blank area is positioned in an included angle area between two adjacent side edges of the first substrate;
the bonding region comprises a supporting structure, the supporting structure is arranged on the display panel, and the supporting structure is positioned between the display panel and the driving chip;
the supporting structure comprises a plurality of substructures, wherein each substructure at least comprises an elongated first part, and the extending direction of the first part is different from the extending direction of the shortest side edge of the first substrate;
in a direction perpendicular to the first substrate, a projection of the support structure at least partially overlaps a projection of the blank region;
in a direction perpendicular to the first substrate, a projection of a shortest side of the first substrate intersects with a projection of at least a part of the first portion.
2. The display panel according to claim 1, wherein the first substrate includes two blank regions; the first substrate comprises a first side edge, a second side edge, a third side edge and a fourth side edge which are sequentially connected, one blank area is located in an included angle area between the first side edge and the second side edge, and the other blank area is located in an included angle area between the first side edge and the fourth side edge;
the binding region comprises two support structures, and in the direction perpendicular to the first substrate, the projection of one support structure at least partially overlaps the projection of one blank region, and the projection of the other support structure at least partially overlaps the projection of the other blank region;
and the two support structures are symmetrically arranged in a direction parallel to the second side edge.
3. The display panel according to claim 1 or 2, wherein the sub-structure further comprises a second portion having an elongated shape, the second portion being connected to the first portion, and the second portion extending in the same direction as the shortest side of the first substrate.
4. The display panel according to claim 1, wherein the blank area is a triangular area, the triangle including a first side, a second side and a third side, the first side being parallel to a longest side of the first substrate, the second side being parallel to a shortest side of the first substrate;
the extending directions of the first parts are parallel to the first edge, and the connecting lines of the first ends of the first parts are parallel to the third edge;
or the extending directions of the plurality of first parts are parallel to the third side, and the connecting line of the first ends of the first parts is parallel to the first side;
or, the connecting lines of the first ends of the plurality of first parts are parallel to the third side, and the connecting lines of the second ends of the parts of the first parts are parallel to the first side.
5. The display panel according to claim 4, wherein a connecting line of the second end of at least a part of the first portion is parallel to the second side.
6. The display panel of claim 1, wherein the widths of any two of the sub-structures are equal;
and/or any two of the substructures are arranged in parallel;
and/or the spacing between any two of the substructures is equal.
7. The display panel according to claim 1, wherein the sub-structure comprises at least a first metal layer and a second metal layer stacked in a direction perpendicular to the first substrate;
the first metal layer and one of the multiple metal layers on the display panel are arranged on the same layer, and the second metal layer and the other of the multiple metal layers on the display panel are arranged on the same layer.
8. The display panel of claim 7, wherein the plurality of metal layers comprise a gate line layer, a data line layer, and a touch electrode layer.
9. The display panel according to claim 1, wherein the bonding area further comprises a connection terminal and a trace connected to the connection terminal;
the sub-structure comprises the trace.
10. A display device comprising the display panel according to any one of claims 1 to 9.
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| CN202010461474.1A CN111554202B (en) | 2020-05-27 | 2020-05-27 | Display panel and display device |
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| CN202010461474.1A CN111554202B (en) | 2020-05-27 | 2020-05-27 | Display panel and display device |
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Cited By (1)
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| US12021049B2 (en) | 2021-12-16 | 2024-06-25 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Display panel and display device |
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| CN112086418B (en) * | 2020-09-24 | 2022-10-21 | 上海中航光电子有限公司 | Drive chip, preparation method thereof and display device |
| WO2022252069A1 (en) * | 2021-05-31 | 2022-12-08 | 京东方科技集团股份有限公司 | Display panel and display device |
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