CN111862815B - Stretchable display panel and flexible display device - Google Patents
Stretchable display panel and flexible display device Download PDFInfo
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- CN111862815B CN111862815B CN202010745066.9A CN202010745066A CN111862815B CN 111862815 B CN111862815 B CN 111862815B CN 202010745066 A CN202010745066 A CN 202010745066A CN 111862815 B CN111862815 B CN 111862815B
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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
Abstract
The invention discloses a stretchable display panel and a flexible display device, and relates to the technical field of display, wherein the stretchable display panel comprises: the stretchable substrate comprises a plurality of island-shaped structures and a plurality of stretchable bridges, the plurality of island-shaped structures are arranged at intervals, and the stretchable bridges are connected with two adjacent island-shaped structures; a first inorganic layer on the island structure; the plurality of routing lines at least comprise parts which extend from the stretchable bridge to the area overlapped with the first inorganic layer through the island-shaped structures; the first point of the wire corresponds to the joint of the stretchable bridge and the island-shaped structure, the second point of the wire corresponds to the edge of the first inorganic layer, and the distance between the first point and the second point is D1; the shortest distance between the stretchable bridge and the first inorganic layer is D2; wherein D1 is more than D2 is more than 0. The invention effectively solves the problem that the display quality of the stretchable display panel is influenced because the wiring in the stretchable display panel is easy to break.
Description
Technical Field
The invention relates to the technical field of display, in particular to a stretchable display panel and a flexible display device.
Background
In the existing flexible display device, the stretchable display panel comprises a stretchable part and a non-stretchable part, the non-stretchable part is provided with an electronic component, and the stretchable part is provided with a wiring electrically connected with the electronic component. The non-stretching part is further provided with an inorganic film layer, so that steps are formed at the edge of the inorganic film layer on the non-stretching part, the routing extends to the part corresponding to the inorganic film layer and extends to the steps, and when the routing climbs and passes through the steps, the thickness of the routing is reduced, and a folding angle is formed.
In the prior art, the climbing position of the wire is very close to the joint of the stretchable part and the non-stretchable part, and the joint of the stretchable part and the non-stretchable part is a stress concentration area, so that the wire is easily broken when the stretchable part is stretched.
Disclosure of Invention
In view of this, the present invention provides a stretchable display panel and a flexible display device, which effectively solve the problem that the display quality of the stretchable display panel is affected by the disconnection of the routing in the stretchable display panel.
The invention discloses a stretchable display panel, comprising: the stretchable substrate comprises a plurality of island-shaped structures and a plurality of stretchable bridges, the plurality of island-shaped structures are arranged at intervals, and the stretchable bridges are connected with two adjacent island-shaped structures; a first inorganic layer on the island structure; the plurality of routing lines at least comprise parts which extend from the stretchable bridge to the area overlapped with the first inorganic layer through the island-shaped structures; the first point of the wire corresponds to the joint of the stretchable bridge and the island-shaped structure, the second point of the wire corresponds to the edge of the first inorganic layer, and the distance between the first point and the second point is D1; the shortest distance between the stretchable bridge and the first inorganic layer is D2; wherein D1 is more than D2 is more than 0.
Based on the same inventive concept, the invention also discloses a flexible display device which comprises the stretchable display panel.
Compared with the prior art, the stretchable display panel and the flexible display device provided by the invention at least realize the following beneficial effects:
the invention provides a stretchable display panel which comprises a stretchable substrate, wherein the stretchable substrate comprises a plurality of island-shaped structures and a plurality of stretchable bridges, the plurality of island-shaped structures are arranged at intervals, and the stretchable bridges are connected with two adjacent island-shaped structures. The stretchable display panel further comprises a plurality of first inorganic layers and a plurality of wires, the plurality of first inorganic layers are respectively located on the plurality of island-shaped structures, and step areas are formed at corresponding positions of edges of the first inorganic layers on the island-shaped structures. The stretchable bridge extends to a region overlapped with the first inorganic layer through the island-shaped structure, a first point of the routing corresponds to a joint of the stretchable bridge and the island-shaped structure, namely when the stretchable bridge is stretched, the joint of the stretchable bridge and the island-shaped structure is a stress concentration region, and the first point of the routing is located in the stress concentration region. The second point of walking the line corresponds the edge of first inorganic layer, walk the second point of line promptly and be located the step area on the island structure, walk the line and climb at this department, the distance between first point and the second point is greater than the shortest distance between bridge and the first inorganic layer of can stretching, walk the stress concentration regional distance when the climbing region of line on the island structure is stretched with the bridge of can stretching promptly and be far away, the easy condition of breaking that takes place in the climbing department of walking the line when the bridge of can stretching is stretched is effectively avoided, the stability that the display panel of can stretching shows has been improved.
Of course, it is not necessary for any product in which the present invention is practiced to specifically achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic plan view of a stretchable display panel according to the present invention;
FIG. 2 is an enlarged view of section E of FIG. 1;
FIG. 3 is a sectional view taken along the direction F-F' in FIG. 2;
FIG. 4 is a schematic view of another enlarged structure of section E in FIG. 1;
FIG. 5 is a schematic view of a further enlarged structure of section E of FIG. 1;
FIG. 6 is a schematic view of a further enlarged structure of section E of FIG. 1;
FIG. 7 is a schematic view of a further enlarged structure of section E of FIG. 1;
FIG. 8 is a schematic view of a further enlarged structure of section E of FIG. 1;
FIG. 9 is a schematic view of a further enlarged structure of section E of FIG. 1;
FIG. 10 is a schematic view of a further enlarged structure of section E of FIG. 1;
fig. 11 is a schematic plane structure diagram of a flexible display device provided by the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a schematic plan view illustrating a stretchable display panel according to the present invention, fig. 2 is an enlarged schematic view illustrating a portion E of fig. 1, fig. 3 is a cross-sectional view taken along a direction F-F' of fig. 2, and referring to fig. 1 to 3, the present embodiment provides a stretchable display panel including:
a stretchable substrate 10 comprising a plurality of island structures 12 and a plurality of stretchable bridges 11;
a first inorganic layer 20 on the island-like structures 12;
a plurality of traces 30, the traces 30 at least including a portion extending from the stretchable bridge 11 to an area overlapping with the first inorganic layer 20 through the island-shaped structures 12;
a first point a of the trace 30 corresponds to a joint of the stretchable bridge 11 and the island structure 12, a second point B of the trace 30 corresponds to an edge of the first inorganic layer 20, and a distance between the first point a and the second point B is D1;
the shortest distance between the stretchable bridge 11 and the first inorganic layer 20 is D2; wherein the content of the first and second substances,
D1＞D2＞0。
specifically, with continuing reference to fig. 1 and fig. 2, the present embodiment provides a stretchable display panel, which includes a stretchable substrate 10, the stretchable substrate 10 includes a plurality of island structures 12 and a plurality of stretchable bridges 11, the plurality of island structures 12 are disposed at intervals, and the stretchable bridges 11 connect two adjacent island structures 12. That is, the island structures 12 are separated structures, one end of the stretchable bridge 11 is connected to one island structure 12, and the other end of the stretchable bridge 11 is connected to another island structure 12, so that the connection between two adjacent island structures 12 is realized.
Optionally, in this embodiment, the stretchable bridge 11 is in a wave shape, that is, in an unstretched state, the bending state of the stretchable bridge 11 is in a wave shape, and when the stretchable bridge 11 is stretched, the stretchable bridge 11 is straightened, and can be maximally stretched to be in an approximately linear state, and the island-shaped structures 12 are driven to move, so that gaps between the island-shaped structures 12 are increased, but the size and shape of each island-shaped structure 12 do not change, so as to ensure that display elements and the like on the island-shaped structures 12 are not damaged.
The stretchable display panel provided in this embodiment further includes a plurality of first inorganic layers 20 and a plurality of traces 30, the plurality of first inorganic layers 20 are respectively located on the plurality of island structures 12, and the corresponding positions of the edges of the first inorganic layers 20 on the island structures 12 are step regions. The trace 30 extends from the stretchable bridge 11 to a region overlapping the first inorganic layer 20 through the island structure 12, a first point a of the trace 30 corresponds to a junction of the stretchable bridge 11 and the island structure 12, that is, when the stretchable bridge 11 is stretched, the junction of the stretchable bridge 11 and the island structure 12 is a stress concentration region, and the first point a of the trace 30 is in the stress concentration region. The second point B of the trace 30 corresponds to the edge of the first inorganic layer 20, that is, the second point B of the trace 30 is located in the step region on the island-shaped structure 12, the trace 30 climbs at the step region, the distance between the first point a and the second point B is greater than the shortest distance between the stretchable bridge 11 and the first inorganic layer 20, that is, the distance between the climbing region of the trace 30 on the island-shaped structure 12 and the stress concentration region when the stretchable bridge 11 is stretched is relatively long, the situation that the climbing position of the trace 30 is easily broken when the stretchable bridge 11 is stretched is effectively avoided, and the display stability of the stretchable display panel is improved.
Illustratively, the buffer layer 40, the gate insulating layer 50 and the interlayer insulating layer 60 are sequentially disposed on one side of the island-shaped structure 12, in this case, the first inorganic layer 20 includes the buffer layer 40, the gate insulating layer 50 and the interlayer insulating layer 60, the edge of the first inorganic layer 20 is the edge of the buffer layer 40, the gate insulating layer 50 and the interlayer insulating layer 60, and is a step region, and the trace 30 climbs along the edge of the buffer layer 40, the gate insulating layer 50 and the interlayer insulating layer 60. It should be noted that fig. 3 exemplarily shows that the first inorganic layer 20 includes the buffer layer 40, the gate insulating layer 50, and the interlayer insulating layer 60, and in other embodiments of the present invention, the first inorganic layer 20 may also be other film layers, which is not limited in this respect.
It is understood that the stretchable display panel provided in this embodiment further includes an organic light emitting element 70, a thin film transistor TFT, a driving circuit, a driving chip, and the like, and the description of the invention is omitted here.
It should be noted that the island-shaped structures 12 are exemplarily shown as rectangular in the embodiment of the present invention, and in other embodiments of the present invention, the island-shaped structures 12 may also be circular, oval, or the like. In addition, in the embodiment of the present invention, the shape of the stretchable bridge 11 is not limited to the wave shape, and in other embodiments of the present invention, the shape of the stretchable bridge 11 may be a spring shape or a serpentine shape.
Alternatively, the stretchable substrate 10 is a Polyimide (PI) substrate.
It should be noted that, since the first point a of the trace 30 corresponds to the junction of the stretchable bridge 11 and the island-shaped structure 12, the stretchable bridge 11 and the island-shaped structure 12 are separately illustrated in fig. 2 for clearly illustrating the location of the junction of the stretchable bridge 11 and the island-shaped structure 12. Alternatively, the stretchable bridge 11 and the island structures 12 are integrally formed structures made of the same material and formed in the same process.
With continued reference to fig. 1 and 2, optionally, wherein the edges of the island structures 12 are edges of the stretchable substrate 10.
Specifically, the stretchable substrate 10 includes a plurality of island structures 12 and a plurality of stretchable bridges 11, the plurality of island structures 12 are disposed at intervals, and the stretchable bridges 11 connect two adjacent island structures 12, that is, edges of the island structures 12 and the stretchable bridges 11 are edges of the stretchable substrate 10.
With continued reference to fig. 1 and 2, optionally, the connection of the stretchable bridge 11 to the island structures 12 is the edge of the island structures 12.
Specifically, the stretchable substrate 10 includes a plurality of island structures 12 and a plurality of stretchable bridges 11, the plurality of island structures 12 are disposed at intervals, the stretchable bridges 11 connect two adjacent island structures 12, a junction of the stretchable bridge 11 and the island structures 12 is an edge of the island structure 12, and a junction of the stretchable bridge 11 and the island structures 12 is also an edge of the stretchable bridge 11.
With continued reference to FIGS. 1 and 2, optionally, wherein D1 ≧ 2D 2.
Specifically, the first point a of the trace 30 corresponds to a junction of the stretchable bridge 11 and the island structure 12, that is, when the stretchable bridge 11 is stretched, the junction of the stretchable bridge 11 and the island structure 12 is a stress concentration region, and the first point a of the trace 30 is located in the stress concentration region. The second point B of the trace 30 corresponds to the edge of the first inorganic layer 20, that is, the second point B of the trace 30 is located in the step region on the island-shaped structure 12, the trace 30 climbs at this position, the distance between the first point a and the second point B is D1, the shortest distance between the stretchable bridge 11 and the first inorganic layer 20 is D2, D1 is greater than or equal to 2D2, the distance between the first point a and the second point B is far greater than the shortest distance between the stretchable bridge 11 and the first inorganic layer 20, that is, the distance between the climbing region of the trace 30 on the island-shaped structure 12 and the stress concentration region when the stretchable bridge 11 is stretched is far away, the situation that the climbing position of the trace 30 is easily broken when the stretchable bridge 11 is stretched is effectively avoided, and the display stability of the stretchable display panel is improved.
With continuing reference to fig. 1 and fig. 2, optionally, the trace 30 includes a first line segment 31, a second line segment 32 and a third line segment 33 connected in sequence;
the first line segment 31 is at least partially located on the stretchable bridge 11;
the vertical projection of the second line segment 32 on the plane of the stretchable display panel is located within the vertical projection of the island structures 12 on the plane of the stretchable display panel, and it does not overlap with the vertical projection of the first inorganic layer 20 on the plane of the stretchable display panel;
the third line segment 33 extends through the island-like structure 12 to the region overlapping the first inorganic layer 20;
the first line segment 31, the second line segment 32 and the third line segment 33 all have different extending directions.
Specifically, the trace 30 includes a first line segment 31, a second line segment 32 and a third line segment 33 connected in sequence, the first line segment 31 extends from the stretchable bridge 11 to the island structure 12, and the first line segment 31 extends through a junction of the stretchable bridge 11 and the island structure 12. The perpendicular projection of the second line segment 32 on the plane of the stretchable display panel is located within the perpendicular projection of the island structures 12 on the plane of the stretchable display panel, and it does not overlap with the perpendicular projection of the first inorganic layer 20 on the plane of the stretchable display panel. Alternatively, the second line segment 32 extends along the extending direction of the edge of the first inorganic layer 20. The third line segment 33 extends through the island structure 12 to an area overlapping the first inorganic layer 20, and the third line segment 33 extends through a step area on the island structure 12. The extending directions of the first line segment 31, the second line segment 32 and the third line segment 33 are different, that is, the original extending direction of the wire 30 can be changed by the arrangement of the second line segment 32 and the third line segment 33, so that the distance between the climbing region of the wire 30 on the island-shaped structure 12 and the stress concentration region when the stretchable bridge 11 is stretched is far, the situation that the climbing position of the wire 30 is easily broken when the stretchable bridge 11 is stretched is effectively avoided, and the display stability of the stretchable display panel is improved.
With continued reference to fig. 1 and 2, optionally, wherein the connection point of the first line segment 31 and the second line segment 32 is a first inflection point 34, and the connection point of the second line segment 32 and the third line segment 33 is a second inflection point 35;
the vertical projection of the first inflection point 34 and the second inflection point 35 on the plane of the stretchable display panel are located within the vertical projection of the island structures 12 on the plane of the stretchable display panel, and do not overlap with the vertical projection of the first inorganic layer 20 on the plane of the stretchable display panel.
Specifically, the trace 30 includes a first line segment 31, a second line segment 32 and a third line segment 33 which are connected in sequence, the extending directions of the first line segment 31, the second line segment 32 and the third line segment 33 are different, so that the connection point of the first line segment 31 and the second line segment 32 is a first inflection point 34, the connection point of the second line segment 32 and the third line segment 33 is a second inflection point 35, the vertical projections of the first inflection point 34 and the second inflection point 35 on the plane of the stretchable display panel are located in the vertical projection of the island-shaped structure 12 on the plane of the stretchable display panel, and are not overlapped with the vertical projection of the first inorganic layer 20 on the plane of the stretchable display panel, that is, the first inflection point 34 and the second inflection point 35 are directly located on the surface of the island-shaped structure 12, the island-shaped structure 12 can absorb the stress of the first inflection point 34 and the second inflection point 35 in the trace 30, thereby effectively avoiding the situation that the trace is easy to break when the trace 30 changes the extending direction, the display stability of the stretchable display panel is improved.
Fig. 4 is another enlarged schematic structural diagram of a portion E in fig. 1, and referring to fig. 1 and fig. 4, optionally, a line segment formed by the second line segment 32 and the third line segment 33 is curved.
Specifically, with reference to fig. 1 and fig. 4, the line segment formed by the second line segment 32 and the third line segment 33 in the trace 30 is curved, which is more beneficial for the line segment formed by the second line segment 32 and the third line segment 33 to extend along the extending direction of the edge of the first inorganic layer 20, and the bending angle between the second line segment 32 and the third line segment 33 is more rounded, so that the line segment is not easily broken when the extending direction of the second line segment 32 in the trace 20 is changed into the extending direction of the third line segment 33, thereby improving the display stability of the stretchable display panel.
It should be noted that fig. 4 exemplarily shows that the line segment formed by the second line segment 32 and the third line segment 33 is an arc, in other embodiments of the present invention, the line segment formed by the second line segment 32 and the third line segment 33 may also be a parabola shape, or may also be other curved shapes, and the description of the present invention is not repeated herein.
With continued reference to fig. 1 and 4, optionally, the distance between the second point B and its closest two first points a is the same.
Specifically, along the direction that encircles island structure 12, second point B is the same with rather than the distance that is closest between two first points a, thereby make the distance that is between second point B and its closest two first points a be the maximum distance that can set up under the condition of not influencing each other, thereby make the stress concentration region when can stretching bridge 11 of keeping away from as far as possible in the climbing region on island structure 12 of walking line 30, the easy condition of breaking that takes place in the climbing department of walking line 30 when can effectively avoiding can stretching bridge 11 to be stretched, the stability that can stretch the display of display panel has been improved.
Fig. 5 is a schematic view of a further enlarged structure of the part E in fig. 1, referring to fig. 1 and 5, in which, alternatively, the edge of the first inorganic layer 20 forms a groove 21 toward the inside of the first inorganic layer 20 along a direction parallel to the plane of the stretchable display panel;
the groove 21 is open to the first point a, and the trace 30 extends through the groove 21 to an area overlapping with the first inorganic layer 20.
Specifically, with continued reference to fig. 1 and fig. 5, the first point a of the trace 30 corresponds to a junction of the stretchable bridge 11 and the island structure 12, that is, when the stretchable bridge 11 is stretched, the junction of the stretchable bridge 11 and the island structure 12 is a stress concentration region, and the first point a of the trace 30 is located in the stress concentration region. The second point B of the trace 30 corresponds to the edge of the first inorganic layer 20, the edge of the first inorganic layer 20 faces the inside of the first inorganic layer 20 along a direction parallel to the plane of the stretchable display panel to form a groove 21, and the second point B of the trace 30 overlaps the edge of the first inorganic layer 20 corresponding to the inner wall of the groove 21 in a direction perpendicular to the plane of the stretchable display panel. That is, the second point B of the trace 30 is located in the step region on the island structure 12, after the trace 30 extends to the groove 21, the edge of the first inorganic layer 20 corresponding to the inner wall of the groove 21 is climbed, so that the distance between the first point a and the second point B is greater than the shortest distance between the stretchable bridge 11 and the first inorganic layer 20, that is, the distance between the climbing region of the trace 30 on the island structure 12 and the stress concentration region when the stretchable bridge 11 is stretched is further, the situation that the climbing position of the trace 30 is easily broken when the stretchable bridge 11 is stretched is effectively avoided, and the display stability of the stretchable display panel is improved.
Fig. 6 is a schematic view of a further enlarged structure of section E of fig. 1, referring to fig. 1 and 6, in which, alternatively, the island-shaped structures 12 include a first inorganic layer covered region 121 and a non-covered region 122 surrounding the first inorganic layer covered region 121;
the trace 30 includes a ring-shaped connection line 36 located in the non-coverage area 122, and the ring-shaped connection line 36 is disposed around the first inorganic layer 20;
the annular connecting line 36 includes a third point M adjacent to the first point a, and a fourth point N remote from the first point a;
the trace 30 includes a first sub-portion 37 and a second sub-portion 38, the first sub-portion 37 is connected between the first point a and the third point M, and the second sub-portion 38 is connected between the fourth point N and the second point B.
Specifically, with continued reference to fig. 1 and 6, the island-like structure 12 includes a first inorganic layer cap region 121 and a non-cap region 122 surrounding the first inorganic layer cap region 121, and the first inorganic layer 20 is located at the first inorganic layer cap region 121. When the trace 30 is a common signal line, a PVDD power line, a PVEE power line or a touch line, etc., the trace 30 includes a ring-shaped connection line 36 located in the non-covered area 122, and a ring-shaped connection line 36 is disposed around the first inorganic layer 20, the ring-shaped connection line 36 including a third point M adjacent to the first point a, and a fourth point N distant from the first point a, the first point a and the third point M being connected by a first sub-portion 37, the fourth point N and the second point B being connected by a second sub-portion 38, such that the distance between the first point a and the second point B is greater than the shortest distance between the stretchable bridge 11 and the first inorganic layer 20, that is, the distance between the climbing region of the trace 30 on the island-shaped structure 12 and the stress concentration region when the stretchable bridge 11 is stretched is relatively long, so that the situation that the climbing position of the trace 30 is easily broken when the stretchable bridge 11 is stretched is effectively avoided, and the display stability of the stretchable display panel is improved.
It is understood that the first sub-portion 37 of the trace 30 corresponds to a first line segment in the above-mentioned embodiment, the ring-shaped connection line 36 corresponds to a second line segment in the above-mentioned embodiment, and the second sub-portion 38 corresponds to a third line segment in the above-mentioned embodiment.
With continued reference to fig. 1 and 6, optionally, the third points M and the fourth points N are alternately arranged and uniformly spaced along the extension direction of the annular connecting line 36.
Specifically, along the extending direction of the ring-shaped connecting line 36, the third point M and the fourth point N are alternately arranged, and the interval is uniform, thereby making the second point B the same as the distance between the two first points a which are closest to the second point B, thereby making the second point B the maximum distance which can be set up as the distance between the two first points a which are closest to the second point B under the condition of not influencing each other, thereby making the climbing area of the routing 30 on the island-shaped structure 12 as far as possible away from the stress concentration area when the stretchable bridge 11 is stretched, effectively avoiding the condition that the climbing position of the routing 30 is easily broken when the stretchable bridge 11 is stretched, and improving the display stability of the stretchable display panel.
With continued reference to fig. 1 and 6, optionally, wherein the shape of the annular connecting line 36 is the same as the shape of the edge of the perpendicular projection pattern of the first inorganic layer 20 on the plane of the stretchable display panel.
Specifically, the annular connecting line 36 is disposed around the first inorganic layer 20, the annular connecting line 36 includes a third point M adjacent to the first point a and a fourth point N far away from the first point a, the first point a and the third point M are connected by the first sub-portion 37, the fourth point N and the second point B are connected by the second sub-portion 38, the annular connecting line 36 has a shape the same as that of the edge of the first inorganic layer 20 on the vertical projection pattern of the plane where the stretchable display panel is located, determination of the third point M and the fourth point N in the annular connecting line 36 is facilitated, arrangement difficulty of the routing lines 20 is reduced, and production efficiency is improved.
Optionally, a vertical projection pattern of the first inorganic layer on a plane of the stretchable display panel is circular, or elliptical, or rectangular.
Fig. 7 is a schematic view of a further enlarged structure of the part E in fig. 1, and referring to fig. 4, 6 and 7, a vertical projection pattern of the first inorganic layer 20 on a plane of the stretchable display panel is circular. Fig. 8 is a schematic view of a further enlarged structure of the portion E in fig. 1, fig. 9 is a schematic view of a further enlarged structure of the portion E in fig. 1, and referring to fig. 5, fig. 8 and fig. 9, a vertical projection pattern of the first inorganic layer 20 on a plane of the stretchable display panel is rectangular. It should be noted that, in other embodiments of the present invention, the vertical projection pattern of the first inorganic layer on the plane of the stretchable display panel may also be an ellipse or other shapes, which is not described herein again.
With continued reference to fig. 1 and 2, optionally, wherein the plurality of island structures 12 are arranged in an array along a first direction X and a second direction Y, the first direction X and the second direction Y intersecting;
the stretchable bridge 11 includes a first stretchable bridge 111 and a second stretchable bridge 112, the first stretchable bridge 111 is connected with two island structures 12 adjacent in the first direction X, and the second stretchable bridge 112 is connected with two island structures 12 adjacent in the second direction Y;
the traces 30 include a first trace 30A and a second trace 30B, the first trace 30A is located on the first stretchable bridge 111, and the second trace 30B is located on the second stretchable bridge 112.
Specifically, the plurality of island-shaped structures 12 are arranged in an array along a first direction X and a second direction Y, and the first direction X and the second direction Y intersect. Optionally, the first direction X and the second direction Y are perpendicular.
The stretchable bridge 11 includes a first stretchable bridge 111 and a second stretchable bridge 112, the first stretchable bridge 111 is connected to two adjacent island structures 12 in the first direction X, the second stretchable bridge 112 is connected to two adjacent island structures 12 in the second direction Y, and the traces 30 include a first trace 30A on the first stretchable bridge 111 and a second trace 30B on the second stretchable bridge 112. When the stretchable display panel is stretched in the first direction X, the first stretchable bridge 111 and the first trace 30A will be stretched, and when the stretchable display panel is stretched in the second direction Y, the second stretchable bridge 112 and the second trace 30B will be stretched.
With continued reference to fig. 2, optionally, the material of the trace 30 is an elastic material or a stretchable material.
Fig. 10 is a schematic view of a further enlarged structure of the part E in fig. 1, and referring to fig. 10, optionally, the extending direction of the first line segment 31 in the trace 30 is matched with the extending direction of the stretchable bridge 11 in the unstretched state, so that when the stretchable bridge 11 is stretched to generate deformation, the trace 30 is also deformed correspondingly, and the situation that the trace 30 is easily broken when the stretchable bridge 11 is stretched is effectively avoided.
Fig. 11 is a schematic plan view illustrating a flexible display device according to the present invention, and referring to fig. 11, the present embodiment provides a flexible display device 1000 including the stretchable display panel 100 according to the above embodiment of the present invention. The embodiment of fig. 11 is only an example of a mobile phone, and the flexible display device 1000 is described, it is understood that the flexible display device 1000 provided in the embodiment of the present invention may be another flexible display device 1000 with a display function, such as a computer, a television, a vehicle-mounted display device, and the present invention is not limited thereto. The flexible display device 1000 provided in the embodiment of the present invention has the beneficial effects of the stretchable display panel 100 provided in the embodiment of the present invention, and specific reference may be made to the specific description of the stretchable display panel 100 in the above embodiments, and the detailed description of the embodiment is omitted here.
As can be seen from the above embodiments, the stretchable display panel and the flexible display device provided by the present invention at least achieve the following beneficial effects:
the invention provides a stretchable display panel which comprises a stretchable substrate, wherein the stretchable substrate comprises a plurality of island-shaped structures and a plurality of stretchable bridges, the plurality of island-shaped structures are arranged at intervals, and the stretchable bridges are connected with two adjacent island-shaped structures. The stretchable display panel further comprises a plurality of first inorganic layers and a plurality of wires, the plurality of first inorganic layers are respectively located on the plurality of island-shaped structures, and step areas are formed at corresponding positions of edges of the first inorganic layers on the island-shaped structures. The stretchable bridge extends to a region overlapped with the first inorganic layer through the island-shaped structure, a first point of the routing corresponds to a joint of the stretchable bridge and the island-shaped structure, namely when the stretchable bridge is stretched, the joint of the stretchable bridge and the island-shaped structure is a stress concentration region, and the first point of the routing is located in the stress concentration region. The second point of walking the line corresponds the edge of first inorganic layer, walk the second point of line promptly and be located the step area on the island structure, walk the line and climb at this department, the distance between first point and the second point is greater than the shortest distance between bridge and the first inorganic layer of can stretching, walk the stress concentration regional distance when the climbing region of line on the island structure is stretched with the bridge of can stretching promptly and be far away, the easy condition of breaking that takes place in the climbing department of walking the line when the bridge of can stretching is stretched is effectively avoided, the stability that the display panel of can stretching shows has been improved.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (15)
1. A stretchable display panel, comprising:
the stretchable substrate comprises a plurality of island structures and a plurality of stretchable bridges, the plurality of island structures are arranged at intervals, and the stretchable bridges are connected with two adjacent island structures;
a first inorganic layer on the island structures;
a plurality of traces including at least a portion extending from the stretchable bridge through the island structures to an area overlapping the first inorganic layer;
a first point of the wire corresponds to a joint of the stretchable bridge and the island-shaped structure, a second point of the wire corresponds to an edge of the first inorganic layer, and the distance between the first point and the second point is D1;
the routing comprises a first line segment, a second line segment and a third line segment which are connected in sequence;
the first line segment is at least partially located on the stretchable bridge;
the vertical projection of the second line segment on the plane of the stretchable display panel is positioned in the vertical projection of the island-shaped structure on the plane of the stretchable display panel, and the second line segment does not overlap with the vertical projection of the first inorganic layer on the plane of the stretchable display panel;
the third segment extends through the island-like structure to a region overlapping with the first inorganic layer;
a shortest distance between the stretchable bridge and the first inorganic layer is D2; wherein the content of the first and second substances,
D1＞D2＞0。
2. the stretchable display panel of claim 1,
D1≥2D2。
3. the stretchable display panel of claim 1,
the connection position of the stretchable bridge and the island-shaped structure is the edge of the island-shaped structure.
4. The stretchable display panel of claim 1,
the extending directions of the first line segment, the second line segment and the third line segment are different.
5. The stretchable display panel of claim 4,
the connection point of the first line segment and the second line segment is a first inflection point, and the connection point of the second line segment and the third line segment is a second inflection point;
the vertical projection of the first inflection point and the second inflection point on the plane of the stretchable display panel is located in the vertical projection of the island-shaped structure on the plane of the stretchable display panel, and the vertical projection of the first inorganic layer on the plane of the stretchable display panel is not overlapped.
6. The stretchable display panel of claim 4,
the line segment formed by the second line segment and the third line segment is curved.
7. The stretchable display panel of claim 4,
the second point is the same distance as the two first points closest thereto.
8. The stretchable display panel of claim 1,
along the direction parallel to the plane of the stretchable display panel, the edge of the first inorganic layer forms a groove towards the inside of the first inorganic layer;
the groove is opened towards the first point, and the routing wire extends to the area overlapped with the first inorganic layer through the groove.
9. The stretchable display panel of claim 1,
the island-like structure comprises a first inorganic layer footprint and a non-footprint surrounding the first inorganic layer footprint;
the routing comprises a ring-shaped connecting line positioned in the non-coverage area, and the ring-shaped connecting line is arranged around the first inorganic layer;
the annular connecting line comprises a third point adjacent to the first point and a fourth point far away from the first point;
the trace includes a first sub-portion and a second sub-portion, the first sub-portion is connected between the first point and the third point, and the second sub-portion is connected between the fourth point and the second point.
10. The stretchable display panel of claim 9,
and the third points and the fourth points are alternately arranged along the extension direction of the annular connecting line and are uniformly spaced.
11. The stretchable display panel of claim 9,
the shape of the annular connecting line is the same as that of the edge of the vertical projection pattern of the first inorganic layer on the plane of the stretchable display panel.
12. The stretchable display panel of claim 1,
the vertical projection pattern of the first inorganic layer on the plane of the stretchable display panel is circular, or elliptical, or rectangular.
13. The stretchable display panel of claim 1,
the edges of the island structures are the edges of the stretchable substrate.
14. The stretchable display panel of claim 1,
the plurality of island-shaped structures are arranged in an array along a first direction and a second direction, and the first direction and the second direction are intersected;
the stretchable bridges comprise a first stretchable bridge connected with two of the island-shaped structures adjacent in the first direction and a second stretchable bridge connected with two of the island-shaped structures adjacent in the second direction;
the routing lines comprise a first routing line and a second routing line, the first routing line is located on the first stretchable bridge, and the second routing line is located on the second stretchable bridge.
15. A flexible display device comprising the stretchable display panel of any one of claims 1 to 14.
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| CN112863340A (en) * | 2021-01-12 | 2021-05-28 | 武汉华星光电半导体显示技术有限公司 | Stretchable display module |
| CN112863339B (en) * | 2021-01-12 | 2022-08-23 | 武汉华星光电半导体显示技术有限公司 | Stretchable display panel and display device |
| CN112863341B (en) * | 2021-01-12 | 2022-05-17 | 武汉华星光电半导体显示技术有限公司 | Stretchable display panel and display device |
| CN113124273B (en) * | 2021-04-21 | 2022-08-09 | 京东方科技集团股份有限公司 | Display screen stretching device and display system |
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