CN207115890U - Wiring structure, display base plate and display device - Google Patents

The utility model provides a kind of Wiring structure, display base plate and display device, belongs to display technology field.Wiring structure of the present utility model, including the main part with hollow out figure；Main part has the first side and second side being oppositely arranged along Wiring structure bearing of trend, and first side and the second side are waveform；Main part includes multiple conductive units being sequentially connected along Wiring structure bearing of trend；In each conductive unit, the radius of curvature of the protuberance on the first side is different with the radius of curvature of the protuberance on the second side.The folding force that the protuberance on first side in each conductive unit can be born is different from the folding force that can be born of the protuberance on second side, therefore, even if the small protuberance fracture of conductive unit mean curvature radius, can still rely on the larger protuberance of another radius of curvature to keep the connection of Wiring structure, with avoid Wiring structure due to bending is broken and the problem of failure.

Wiring structure, display substrate and display device

Technical Field

The utility model belongs to the technical field of show, concretely relates to walk line structure, display substrate and display device.

Background

In order to manufacture a flexible display device, many display parts have been developed to use organic materials such as an organic light emitting layer, an organic passivation layer, and a polymer substrate (e.g., PI substrate) as a flexible substrate. However, it is difficult to replace metal traces in a display with organic materials because the conductivity of organic materials is much less high than that of metal traces. When the flexible display device is bent, the metal traces in the display panel may be broken (which breaks the strain traces by about 1%) causing the display device to fail.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least, provide a difficult cracked line structure, display substrate and display device of walking.

The technical scheme adopted for solving the technical problem of the utility model is a wiring structure, which comprises a main body part with a hollow pattern; the main body part is provided with a first side edge and a second side edge which are oppositely arranged along the extension direction of the routing structure, and the first side edge and the second side edge are both wavy; wherein,

the main body part comprises a plurality of conductive units which are sequentially connected along the extension direction of the routing structure; in each of the conductive units, a radius of curvature of the protruding portion on the first side and a radius of curvature of the protruding portion on the second side are different.

Preferably, the curvature radius of any two adjacent protrusions on the first side edge is different; and/or the curvature radius of any two adjacent protruding parts on the second side edge is different.

It is further preferred that each of the conductive elements comprises a protrusion on the first side and a protrusion on the second side.

It is further preferable that an extending direction of a connection line between the connection point on the first side and the connection point on the second side of two adjacent conductive units intersects with a direction perpendicular to the extending direction along the routing structure.

It is further preferable that any two adjacent conductive units are in a central symmetrical pattern.

Preferably, at least three kinds of protrusions having different radii of curvature are included on each of the first side edge and the second side edge.

It is further preferable that one of two adjacent conductive units of at least part of the main body portion includes one protruding portion on the first side and two protruding portions on the second side, and the other includes two protruding portions on the first side and one protruding portion on the second side.

It is further preferred that the conductive unit including one protruding portion located on the first side and two protruding portions located on the second side and the conductive unit adjacent thereto including two protruding portions located on the first side and two protruding portions located on the second side are in a central symmetrical pattern.

Preferably, the routing structure includes a plurality of main body portions; the first side edge of one of the main body parts and the second side edge of the other main body part which are adjacent are spliced into a whole.

Further preferably, the hollow patterns in two adjacent main body parts are arranged in a staggered manner.

Preferably, each of the conductive units is provided with one of the hollow patterns.

Preferably, the shape of the hollow pattern includes any one of a circle, an ellipse, a rectangle and a diamond.

Preferably, each of the conductive units is of an integrally molded structure.

Solve the utility model discloses technical scheme that technical problem adopted is a display substrate, and it includes the basement, and sets up foretell line structure of walking on the basement.

Solve the technical problem the utility model discloses the technical scheme that technical problem adopted is a display device, and it includes foretell display substrate.

The utility model discloses following beneficial effect has:

because the first side and the second side of the main body of the routing structure of the utility model are both wavy (i.e. each side is formed by connecting a plurality of protruding parts), and the curvature radius of the protruding part on the first side and the curvature radius of the protruding part on the second side are different for each conductive unit in the main body, the bending force that the protruding part on the first side can bear in each conductive unit is different from the bending force that the protruding part on the second side can bear, specifically, the curvature of the protruding part with large curvature radius is small, so that in one conductive unit, the length of the protruding part on the first side is different from the length of the protruding part on the second side, so that the bending resistance of the two conductive units is also different, even if the protruding part with large curvature radius is broken in the conductive unit, the connection of the routing structure can be maintained by the protruding part with smaller curvature radius, so as to avoid the problem of failure of the wiring structure due to bending and breaking.

Drawings

Fig. 1 to 3 are schematic views of a wiring structure of a first preferred implementation manner of embodiment 1 of the present invention;

fig. 4 is a schematic view of a wiring structure of a second preferred implementation manner of embodiment 1 of the present invention;

fig. 5 is a schematic view of a routing structure of a third preferred implementation manner of embodiment 1 of the present invention.

Wherein the reference numerals are: 10. a conductive unit; 11. a first side edge; 12. a second side edge; 13. and (6) hollowing out the pattern.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Example 1:

as shown in fig. 1 to 5, the present embodiment provides a trace structure, which includes a main body portion having a hollow pattern 13; the main body part is provided with a first side edge 11 and a second side edge 12 which are oppositely arranged along the extending direction of the routing structure, and the first side edge 11 and the second side edge 12 are both wavy; the main body part comprises a plurality of conductive units 10 which are sequentially connected along the extending direction of the routing structure; in each conductive element 10, the radius of curvature of the protrusion on the first side 11 and the radius of curvature of the protrusion on the second side 12 are different.

Because the first side 11 and the second side 12 of the main body portion of the wiring structure in this embodiment are both wavy (that is, each side is formed by connecting a plurality of protruding portions), and the radius of curvature of the protruding portion on the first side 11 and the radius of curvature of the protruding portion on the second side 12 for each conductive unit 10 in the main body portion are different, so that the bending force that the protruding portion on the first side 11 in each conductive unit 10 can bear is different from the bending force that the protruding portion on the second side 12 can bear, for example, in one conductive unit, the radius of curvature of the protruding portion on the first side 11 is greater than the radius of curvature of the protruding portion on the second side 12, that is, the curvature of the protruding portion on the first side 11 is less than the curvature of the protruding portion on the second side 12, so that the length of the protruding portion on the first side 11 (the length is the arc length of the protruding portion) is less than the radius of the protruding portion on the second side 12 The length of the protruding portion is such that the protruding portion on the second side 12 has a stronger bending resistance in the process of bending, twisting and stretching the wire structure. That is, even if the protrusion with a large radius of curvature in the conductive unit 10 is broken, the connection of the trace structure can be maintained by another protrusion with a smaller radius of curvature, so as to avoid the problem that the trace structure fails due to bending and breaking.

Wherein, the curvature radius of any two adjacent protruding parts on the first side 11 of the main body part is different; and/or the radius of curvature of any two adjacent projections on the second side 12 is different. That is to say, the bending degree of any two adjacent protruding portions on at least one of the first side 11 and the second side 12 is different, and the protruding portions with different bending degrees are also different, even if the routing structure is subjected to a large force in the bending process, at this time, only a part of the protruding portions are broken (the bending degree is small, and the curvature radius is large), and the curvature radii of the protruding portions on the first side 11 and the second side 12 in the same conductive unit 10 are also different, and similarly, even if the routing structure is subjected to a large force in the bending process, only one of the protruding portions is broken (the bending degree is small, and the curvature radius is large), so that the routing structure can also normally transmit signals, and use is not affected.

Wherein, all be provided with a fretwork figure 13 in every electrically conductive unit 10, this kind of structure can take place crooked, tensile, distortion in-process and can release stress as far as on the basis of guaranteeing to walk the good electric conductivity ability of line structure, prevents to walk the line structure fracture. The shape of the hollow pattern 13 may be any one of a circle, an ellipse (as shown in fig. 2), a rectangle, and a diamond, but is not limited to these shapes.

The following describes the routing structure in this embodiment with reference to specific implementation manners.

In a first preferred implementation manner, as shown in fig. 1 to 3, the main body portion of the trace structure includes conductive units 10 connected in sequence along the extending direction of the trace structure, where each conductive unit 10 has a protruding portion on the first side 11 and a protruding portion on the second side 12, and the two protruding portions have different curvature radii. Moreover, the curvature radius of the protruding portion on the first side 11 of any two adjacent conductive units 10 is different, and the curvature radius of the protruding portion on the second side 12 is also different. A hollow pattern 13 is provided in each conductive element 10. Preferably, each conductive unit 10 is an integrally formed structure, so that the conductive unit is convenient to prepare and can greatly improve the production efficiency.

Preferably, as shown in fig. 3, an extending direction of a connection line between a connection point on the first side 11 and a connection point on the second side 12 of two adjacent conductive units 10 on the main body portion intersects with a direction perpendicular to the extending direction along the routing structure. The connection point of the two adjacent conductive units 10 on the first side 11 and the connection point on the second side 12 on the main body portion are stress concentration points in the process of twisting, bending, stretching and the like of the routing structure, so that a connection line between the stress concentration point on the first side 11 and the stress concentration point on the second side 12 between the two adjacent conductive units 10 in this embodiment is not on a horizontal line (the horizontal line is a straight line perpendicular to the extending direction of the routing structure), as shown in the positions of the point a and the point b in fig. 3, and the direction of connection between the point a and the point b. This kind of structure can be when walking the line structure and taking place to buckle, avoids stress concentration point's the line direction (the direction of the connection of a point and b point) to be parallel with the direction of buckling (dotted line direction in the picture) to prevent that the crackle that buckles and form from extending along stress concentration point's line direction, lead to the fact and walk the cracked phenomenon of line structure, and then improved and walked line structure's resistant bending nature and reliability. Especially for the flexible substrate, due to the nature of the flexible substrate, the flexible substrate is easy to bend, and by adopting the routing structure in the embodiment, the yield of the flexible substrate can be greatly improved.

In order to make the structure of the trace structure uniform, therefore, the first side 11 and the second side 12 of the main body portion each preferably include two kinds of protruding portions with different curvature radii. The projections having different radii of curvature on each side alternate. Further, the types of the protruding portions provided on the first side 11 and the second side 12 are the same (the same type means that, for example, the curvature radius of the protruding portion on the first side 11 is 30mm and 50mm, respectively, and the curvature radius of the protruding portion on the second side 12 is also 30mm and 50mm, respectively). At this time, two adjacent conductive elements 10 are in a central symmetrical pattern with each other.

In a second preferred implementation manner, as shown in fig. 4, the main body portion of the trace structure includes conductive units 10 connected in sequence along the extending direction of the trace structure, the first side 11 and the second side 12 of the main body portion each include three protruding portions with different curvature radii, the curvature radii of the protruding portions of any two adjacent conductive units 10 on the first side 11 are different, and the curvature radii of the protruding portions on the second side 12 are also different. A hollow pattern 13 is provided in each conductive element 10. Preferably, each conductive unit 10 is an integrally formed structure, so that the conductive unit is convenient to prepare and can greatly improve the production efficiency.

Specifically, as shown in fig. 4, the structure of a part of the conductive units 10 in the main body portion of the routing structure is the same as that of the first implementation, and one of the two conductive units 10 in the remaining portion includes one protruding portion located on the first side 11 and two protruding portions located on the second side 12, and the other includes two protruding portions located on the first side 11 and one protruding portion located on the second side 12. Preferably, the conductive element 10 including one protrusion on the first side 11 and two protrusions on the second side 12, and the conductive element 10 adjacent thereto including two protrusions on the first side 11 and two protrusions on the second side 12 are in a central symmetrical pattern with each other.

It should be noted that the first side 11 and the second side 12 of the main body may include more protruding portions with different curvature radii. Each conductive unit 10 is not limited to the above structure, and may include a plurality of protruding portions on the first side 11 and a plurality of protruding portions on the second side 12, which are not listed here.

As a third preferred implementation manner in this embodiment, the routing structure may be formed by splicing a plurality of any one of the above routing structures. As shown in fig. 5, the routing structure includes two main body portions; wherein, the first side 11 of one of the two adjacent main body parts and the second side 12 of the other one of the two adjacent main body parts are spliced into an integral structure. Preferably, as shown in fig. 5, the hollow patterns 13 in the two adjacent main body portions are arranged in a staggered manner, and this arrangement manner avoids the problem that the hollow patterns 13 in the two adjacent main body portions are arranged in a direction perpendicular to the extending direction of the routing structure, which causes the routing structure to be easily broken when being bent in this direction.

As shown in fig. 1 to 5, the curvature radius of the protruding portion on the first side 11 and the curvature radius of the protruding portion on the second side 12 of each conductive unit 10 in the main body portion of the various routing structures are different, so that the bending force that the protruding portion on the first side 11 in each conductive unit 10 can bear is different from the bending force that the protruding portion on the second side 12 can bear, and therefore, even if the protruding portion with a large curvature radius in the conductive unit 10 is broken, the connection of the routing structure can be maintained by using another protruding portion with a smaller curvature radius, so as to avoid the problem that the routing structure fails due to the breaking of the bending.

Example 2:

this embodiment provides a display substrate, which includes a substrate and a trace structure disposed on the substrate, where the trace structure may be any one of the trace structures in embodiment 1.

The display substrate in this embodiment is preferably a flexible substrate, that is, the material of the substrate used is a flexible material, such as Polyimide (PI).

Because the first side 11 and the second side 12 of the main body portion on the trace structure in the display substrate in this embodiment are both wavy (that is, each side is formed by connecting a plurality of protruding portions), and the curvature radius of the protruding portion on the first side 11 and the curvature radius of the protruding portion on the second side 12 for each conductive unit 10 in the main body portion are different, the bending force that the protruding portion on the first side 11 can bear in each conductive unit 10 is different from the bending force that the protruding portion on the second side 12 can bear, so that even if the protruding portion with a large curvature radius in the conductive unit 10 is broken, the connection of the trace structure can be maintained by means of another protruding portion with a smaller curvature radius, so as to avoid the problem that the trace structure fails due to bending breakage. In particular, in the case of a flexible substrate, the flexible substrate is easily bent due to its own properties. By adopting the wiring structure in the embodiment, the yield of the flexible substrate can be greatly improved.

Example 3:

the present embodiment provides a display device including the display substrate in embodiment 2. Therefore, the performance of the display device of the present embodiment is better.

The display device may be a liquid crystal display device or an electroluminescent display device, such as any product or component with a display function, such as a liquid crystal panel, electronic paper, an OLED panel, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.