Substrate with stretchable wire and display

Abstract

The invention discloses a substrate with stretchable wires. The substrate comprises a base layer, a first layer, a second layer and first wires. The first layer is disposed on the base layer. The second layer is provided with a first area overlapped on the substrate layer, the second layer is provided with a second area overlapped on the first layer, and a peripheral area is formed at the junction of the first area and the second area; the first wire includes a boundary section, and a projection of the boundary section on the second layer at least covers a portion of the peripheral region. The first conductive line has a first conductive line width in the non-junction section, and has a junction section width smaller than the first conductive line width in the junction section.

Description

Technical Field

[0001] The present invention relates to a substrate, and more specifically, to a substrate having stretchable wires. Background Technology

[0002] In the metal trace design of display panels, the bridge structure metal conductors consist of multiple layers of metal conductors and insulating layers, each transmitting different currents and signals. However, the strain of stretched metal conductors is extremely high, easily causing damage to the bridge structure. Furthermore, the metal conductors overlap areas on the insulating layer and connect to areas on the inorganic layer to connect to various components. For example, the metal conductors connect to components containing inorganic materials as buffer layers or interlayer dielectrics (ILDs). Therefore, after the metal is stretched, the strain at the interface between the insulating and inorganic layers also increases, leading to component structural failure. Summary of the Invention

[0003] To address the aforementioned technical problems, embodiments of the present invention provide a substrate with stretchable conductive lines, comprising a base layer, a first layer, a second layer, and a first conductive line. The first layer is stacked on the base layer. The second layer has a first region stacked on the base layer and a second region stacked on the first layer, wherein the boundary between the first region and the second region forms a peripheral region. The first conductive line includes a boundary segment, and the projection of the boundary segment onto the second layer at least covers a portion of the peripheral region. The first conductive line has a first conductive line width in the portion outside the boundary segment and a boundary segment width smaller than the first conductive line width in the boundary segment.

[0004] Another embodiment of the present invention also provides a display comprising the above-described substrate having stretchable wires.

[0005] Compared with the prior art, embodiments of the present invention can reduce the width of the first conductor in the junction section, so that when the first conductor is connected to other components in the second region, there is more second layer that can be used as a buffer, thereby further reducing the regional strain of other components. Attached Figure Description

[0006] To make the above and other objects, features, advantages and embodiments of the present invention more apparent and understandable, the accompanying illustrations are described below.

[0007] Figure 1A This is a schematic top view of a display with a substrate having stretchable wires according to an embodiment of the present invention.

[0008] Figure 1B For along Figure 1A A schematic cross-sectional view of a substrate with stretchable wires according to an embodiment of the present invention in the AB direction.

[0009] Figure 2A A is a schematic top view of a first embodiment of the first conductor of the boundary section according to an embodiment of the present invention.

[0010] Figure 2A Image B is a schematic enlarged top view of a first embodiment of the first conductor of the boundary section according to an embodiment of the present invention.

[0011] Figure 2B C is along Figure 2A A schematic cross-sectional view of the first embodiment of the first conductor in the boundary section of the present invention in the AB direction of B.

[0012] Figure 2B D is along Figure 2A A schematic cross-sectional view of the first embodiment of the first conductor in the boundary section of the B-C direction according to an embodiment of the present invention.

[0013] Figure 3A A is a schematic top view of a second embodiment of the first conductor of the boundary section according to an embodiment of the present invention.

[0014] Figure 3A C1 is a schematic enlarged top view of a second embodiment of the first conductor of the boundary section according to an embodiment of the present invention.

[0015] Figure 3B C is along Figure 3A A schematic cross-sectional view of the second embodiment of the first conductor in the boundary section of the B-direction according to an embodiment of the present invention.

[0016] Figure 3B D is along Figure 3A A schematic cross-sectional view of the second embodiment of the first conductor in the boundary section of the B-C direction according to an embodiment of the present invention.

[0017] Figure 4A A is a schematic top view of a first embodiment of the first conductor of the bent section according to an embodiment of the present invention.

[0018] Figure 4A Image B is a schematic enlarged top view of a first embodiment of the first conductor of the bent section according to an embodiment of the present invention.

[0019] Figure 4B C is along Figure 4A A schematic cross-sectional view of the first embodiment of the first conductor in the bending section of the present invention in the AB direction of B.

[0020] Figure 4B D is along Figure 4AA schematic cross-sectional view of the first embodiment of the first conductor in the bending section of the present invention in the CD direction of B.

[0021] Figure 5A This is a schematic top view of a second embodiment of the first conductor in the bent section according to an embodiment of the present invention.

[0022] Figure 5B This is a schematic enlarged top view of a second embodiment of the first conductor in the bent section according to an embodiment of the present invention.

[0023] Figure 5C for Figure 5B A schematic top view of an embodiment in which the bending section of the first conductor has an inner groove.

[0024] Figure 5D For along Figure 5B A schematic cross-sectional view of the first conductor in the bending section of the present invention in the AB direction according to an embodiment of the present invention.

[0025] Figure 5E For along Figure 5B A schematic cross-sectional view of the first conductor in the bending section of the present invention in the CD direction according to an embodiment of the present invention.

[0026] Figure 6 A is a schematic diagram of a first conductor that simultaneously has an opening in a boundary section and an opening in a bending section according to an embodiment of the present invention.

[0027] Figure 6 Figure B is a schematic diagram comparing the opening lengths of the first conductor in the boundary section and the first conductor in the bending section according to an embodiment of the present invention.

[0028] In the attached figures, the following labels are used:

[0029] 10:Substrate

[0030] 50: Basal layer

[0031] 60: Components

[0032] 70: Monitor

[0033] 100: First layer

[0034] 200: Second layer

[0035] 205: Area 1

[0036] 210: Second Area

[0037] 215: Border

[0038] 220: Surrounding Area

[0039] 300: First conductor

[0040] 302: Boundary Section

[0041] 302W: Conductor width in the boundary section

[0042] 304: Wire end

[0043] 306: Bending Section

[0044] 306W: Width of conductor in the bending section

[0045] 310: First opening side portion

[0046] 310W: Width of the first opening side portion

[0047] 320: Second opening side portion

[0048] 320W: Width of the second opening side portion

[0049] 330: First Opening

[0050] 330W: First opening width

[0051] 330L: First opening length

[0052] 340: Fill layer

[0053] 350, 351: Groove

[0054] 352: Inner groove

[0055] 353: Outer groove

[0056] 350W, 351W: Groove width

[0057] 352W: Width of the inner groove

[0058] 353W: Width of the outer groove

[0059] 360: Inner conductor

[0060] 360W: Width of inner conductor

[0061] 370: Outer conductor

[0062] 370W: Width of outer conductor

[0063] 380: Second opening

[0064] 380W: Second opening width

[0065] 380L: Second opening length

[0066] 400: Second conductor

[0067] 400W: Second conductor width

[0068] 410: Third conductor

[0069] 410W: Width of the third conductor

[0070] 420: Fourth conductor

[0071] 420W: Fourth conductor width

[0072] L1: First sub-length of the first opening

[0073] L2: Second sub-length of the first opening

[0074] L3: First sub-length of the groove

[0075] L4: Second sub-length of the groove

[0076] W1: Width of the first conductor

[0077] θ: radians Detailed Implementation

[0078] Various embodiments will be described in this specification, and those skilled in the art should be able to easily understand the spirit and principles of the invention by referring to the description and accompanying drawings. Here, the elements or portions depicted in the drawings may be exaggerated or varied for clarity. Therefore, those skilled in the art should understand that the dimensions and relative proportions of the elements or portions depicted in the drawings are not the actual dimensions and relative proportions of the elements or portions. Furthermore, although some specific embodiments will be specifically described herein, these embodiments are merely illustrative and are not to be considered limiting or exhaustive in any way. Therefore, various changes and modifications to the invention should be obvious and easily achievable by those skilled in the art without departing from the spirit and principles of the invention.

[0079] It should be understood that although the terms “first,” “second,” “third,” etc., may be used herein to describe various elements, components, regions, layers, and / or parts, these elements, components, regions, and / or parts should not be limited by these terms. These terms are used only to distinguish one element, component, region, layer, or part from another. Therefore, the “first element,” “component,” “region,” “layer,” or “part” discussed below may be referred to as a second element, component, region, layer, or part without departing from the teachings of this document.

[0080] Furthermore, existing elements in embodiments of the present invention will not be described in detail or will be omitted to avoid obscuring relevant details. In the following description, specific details are set forth in the drawings and specification for purposes of explanation and not limitation in order to provide a thorough understanding of embodiments of the invention. However, it will be apparent, however, that implementation may be carried out without these specific details.

[0081] See Figure 1A and Figure 1B ,in Figure 1A This is a schematic top view of a substrate with stretchable wires according to an embodiment of the present invention, and Figure 1B For along Figure 1A A schematic cross-sectional view of a substrate with stretchable wires according to an embodiment of the present invention in the AB direction.

[0082] In this embodiment, as Figure 1A As shown, the substrate 10 with stretchable wires includes a base layer 50, a first layer 100, a second layer 200, and a first wire 300. Figure 1B In this configuration, a first layer 100 is stacked on a base layer 50. A second layer 200 has a first region 205 stacked on the base layer 50 and a second region 210 stacked on the first layer 100, wherein the boundary 215 between the first region 205 and the second region 210 forms a peripheral region 220. A first conductor 300 includes a boundary segment 302, and the projection of the boundary segment 302 onto the second layer 200 at least covers a portion of the peripheral region 220. The first conductor 300 has a first conductor width W1 in the non-boundary segment portion and a boundary segment width smaller than the first conductor width W1 in the boundary segment 302 (described in the following embodiments). Various embodiments of the first conductor 300 in the boundary segment 302 will be described in the following embodiments. Figure 2A , Figure 2B , Figure 3A , Figure 3B Detailed description is provided.

[0083] The substrate layer 50 described above can be implemented as a stretchable substrate layer. For example, the material of the substrate layer 50 in this embodiment can be an organic polymer, such as polyimide (PI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polycarbonate (PC), polyether sulfone (PES), or polyarylate, other suitable materials, or combinations of at least two of the aforementioned materials, but is not limited thereto. The first layer 100 described above can be implemented as an inorganic layer, such as a stacked layer of inorganic materials like silicon oxide, silicon nitride, silicon oxynitride, etc. The second layer 200 described above can be implemented as a first insulating layer, such as various polymers, etc.

[0084] exist Figure 1B In this structure, the first conductor 300 is stacked on the second layer 200 and extends from the first region 205 (or, which may be called the outer island region) to the second region 210 (or, which may be called the inner island region). At this point, the material beneath the first conductor 300 changes from a first insulating layer containing organic matter to a layer containing inorganic matter. Therefore, due to the change in material, the area around the boundary 215 between the first region 205 and the second region 210 (e.g., Figure 1A and Figure 1B The strain at the point indicated by the dotted line will increase significantly. Furthermore, the height change of the first conductor 300 as it enters the second region 210 from the first region 205 also increases the strain around the junction 215. This makes the structure of the component 60 in the island region more susceptible to damage. Component 60 can be a light-emitting element or a driving circuit element in the display 70, etc., but is not limited thereto.

[0085] The following describes various embodiments of the first conductor 300 at the junction section 302. See also... Figure 2A , 2B ,in Figure 2A A is a schematic top view of a first embodiment of the first conductor in the boundary section according to an embodiment of the present invention. Figure 2A B is a schematic enlarged top view of a first embodiment of the first conductor in the boundary section according to an embodiment of the present invention. Figure 2B C is along Figure 2A A schematic cross-sectional view of the first embodiment of the first conductor in the boundary section of the AB direction of B according to an embodiment of the present invention, and Figure 2B D is along Figure 2AA schematic cross-sectional view of the first embodiment of the first conductor in the boundary section of the B-C direction according to an embodiment of the present invention.

[0086] exist Figure 2A In this embodiment, the first conductor 300 is configured to have a cutout in the boundary section 302. For example, the first conductor 300 in the boundary section 302 includes a first open-side portion 310, a second open-side portion 320, and a first opening 330. The first open-side portion 310 has a first open-side portion width 310W, and the second open-side portion 320 has a second open-side portion width 320W. The first opening 330 is located between the first open-side portion 310 and the second open-side portion 320.

[0087] exist Figure 2A In section B, the opening of the first opening-side portion 310 faces the direction of the second opening-side portion 320, and the opening of the second opening-side portion 320 faces the direction of the first opening-side portion 310. The first opening 330 is formed by being surrounded by the first opening-side portion 310 and the second opening-side portion 320. The first opening 330 is in a direction parallel to the substrate layer 50 (i.e.,...). Figure 2A The first opening width 330W is in the direction parallel to the XY plane in B, and the vertical projection range of the first opening side 310 and the second opening side 320 on the second layer 200 at least covers part of the peripheral area 220.

[0088] exist Figure 2B In this structure, the first opening 330, surrounded by the first opening-side portion 310 and the second opening-side portion 320, is further filled by a filler layer 340, and the filler layer 340 contacts the second layer 200 below the first conductor 300 via the first opening 330. In other words, the filler layer 340 has a first opening width 330W in a direction parallel to the substrate layer 50, and the filler layer 340 can be implemented as a second insulating layer with a material similar to that of the first insulating layer.

[0089] As can be seen from the above embodiments, a portion of the first conductor 300 in the junction section 302 is removed and filled with a second insulating layer. Therefore, the junction section 302 has a second insulating layer that provides additional strain buffering, reducing the strain on the first layer 100 and its connected components 60 within the second region 210. Simulation results show that this can reduce the regional strain on the components 60 within the island by approximately 20%. Considering the stability of the electrical connection of the first conductor 300 to the components within the island, the first conductor 300 has a conductor end 304 between the conductor and the component in the junction section 302, and the first opening 330 does not extend to the conductor end 304, as... Figure 2A As shown in B.

[0090] The following description Figures 2A to 2BVarious example values ​​for the first conductor 300, the first opening 330, and the filling layer 340 in the embodiments are provided. For example, the ratio of the first opening width 330W to the first conductor width W1 is implemented to be between 0.1 and 0.8. In other words, the ratio of the width of the filling layer 340 filling the first opening 330 to the first conductor width W1 is between 0.1 and 0.8. On the other hand, the conductor of the first conductor 300 in the junction section 302 is implemented as a first opening side portion 310 and a second opening side portion 320, such as... Figure 2A As shown in B.

[0091] The width of the boundary section 302 of the first conductor 300 is the sum of the widths 310W of the first opening side portion and 320W of the second opening side portion, and the width of the boundary section is less than the width W1 of the first conductor. The ratio between the widths 310W and 320W of the first opening side portion can be implemented to be between 0.9 and 1.1. In other words, the position of the first opening 330 is centrally located on the first conductor 300. For example, the width W1 of the first conductor 300 is 6.4 micrometers, the width 330W of the first opening 330 is 2.4 micrometers, and the conductor widths 310W and 320W of the first opening side portion 310 and the second opening side portion 320 are 2 micrometers.

[0092] Regarding the length direction of the first opening 330, the length of the first opening 330 projected vertically onto one side of the boundary 215 (e.g., onto the second region 210, i.e., onto the island region containing the first layer 100) can be defined as the first sub-length L1 of the first opening 330. Similarly, the length of the first opening 330 projected vertically onto the other side of the boundary 215 (e.g., onto the first region 205, i.e., onto the island region outside the second layer 200) can be defined as the second sub-length L2 of the first opening 330. Furthermore, the first sub-length L1 of the first opening 330 is greater than 50% of the width 310W of the side portion of the first opening. Likewise, the second sub-length L2 of the first opening 330 is greater than 50% of the width 310W of the side portion of the first opening. For example, the length of the first opening 330 is 17 micrometers, where the first sub-length L1 of the first opening 330 is 10 micrometers, and the second sub-length L2 of the first opening 330 is 7 micrometers.

[0093] The following describes another embodiment of the first conductor 300 at the junction section 302. See also... Figures 3A to 3B ,in Figure 3A A is a schematic top view of a second embodiment of the first conductor in the boundary section according to an embodiment of the present invention. Figure 3A B is a schematic enlarged top view of a second embodiment of the first conductor in the boundary section according to an embodiment of the present invention. Figure 3B C is along Figure 3A A schematic cross-sectional view of the first conductor in the boundary section of the AB direction of B according to an embodiment of the present invention, and Figure 3B D is along Figure 3A A schematic cross-sectional view of the second embodiment of the first conductor in the boundary section of the B-C direction according to an embodiment of the present invention.

[0094] exist Figure 3A In this configuration, the first conductor 300 is provided with a groove on at least one side of the junction section 302. For example, the width of the first conductor 300 in the junction section 302 is the conductor width 302W of the junction section 302, and grooves 350 and 351 are formed on both sides of the junction section 302. Furthermore, the filling layer 340 fills the grooves 350 and 351 and contacts the second layer 200 below the first conductor 300. (As described above...) Figures 2A to 2B Similar to the embodiment, a portion of both sides of the first conductor 300 in the junction section 302 is removed and filled with a second insulating layer, such as... Figure 3B As shown in D. Therefore, the junction section 302 has a second insulating layer to provide additional buffer strain, thereby reducing the strain of the first layer 100 and its connected elements 60 within the second region 210.

[0095] The following description Figures 3A to 3B Various example values ​​for the first conductor 300, the conductor of the boundary section 302, and the fill layer 340 in the embodiments. For example, in Figure 3B In sections C and D, the ratio of the conductor width 302W of the boundary section 302 to the first conductor width W1 is implemented to be between 0.1 and 0.8. On the other hand, the grooves 350 and 351 on both sides of the first conductor 300 of the boundary section 302 have groove widths 350W and 351W respectively, and the ratio of the groove widths 350W and 351W is between 0.9 and 1.1. In other words, the conductor of the boundary section 302 is centrally positioned on the first conductor 300, as... Figure 3A As shown in Figure B. For example, the width W1 of the first conductor 300 is 6.4 micrometers, the conductor width 302W of the junction section 302 is 2.4 micrometers, and the conductor widths of the groove widths 350W and 351W are 2 micrometers.

[0096] Regarding the length direction of the conductor in the boundary section 302, the length of the grooves 350 and 351 projected vertically to one side of the boundary 215 (e.g., projected to the second region 210, i.e., projected to the island region containing the first layer 100) can be defined as the first sub-length L3 of the grooves 350 and 351. Similarly, the length of the grooves 350 and 351 projected vertically to the other side of the boundary 215 (e.g., projected to the first region 205, i.e., projected to the island region outside the second layer 200) can be defined as the second sub-length L4 of the grooves 350 and 351.

[0097] Furthermore, the first sub-length L3 of grooves 350 and 351 is greater than 25% of the conductor width 302W of the boundary section 302. Similarly, the second sub-length L4 of grooves 350 and 351 is greater than 25% of the conductor width 302W of the boundary section 302. For example, the length of grooves 350 and 351 is 8.5 micrometers, wherein the first sub-length L3 of the first groove 350 and 351 is 5 micrometers, and the second sub-length L4 of the groove 350 and 351 is 3.5 micrometers. (The last sentence appears to be incomplete and possibly refers to a different context.) Figures 2A to 2B Similar to the embodiments, considering the stability of the first conductor 300 being electrically connected to the island components, the grooves 350 and 351 do not extend to the conductor end 304.

[0098] The above Figures 2A to 2B The first conductor 300 is implemented with a perforation in the junction section 302, and in... Figures 3A to 3B The first conductor 300 is implemented with a groove on at least one side of the junction section 302, and can also be implemented in other sections of the first conductor 300.

[0099] The following describes various implementations of the first conductor 300 in the bending section. (Refer to the figure.) Figures 4A to 4B ,in Figure 4A A is a schematic top view of a first embodiment of the first conductor in the bent section according to an embodiment of the present invention. Figure 4A B is a schematic enlarged top view of a first embodiment of the first conductor in the bent section according to an embodiment of the present invention. Figure 4B C is along Figure 4A A schematic cross-sectional view of the first embodiment of the first conductor in the bending section of the present invention in the AB direction of B, and Figure 4B D is along Figure 4A A schematic cross-sectional view of the first embodiment of the first conductor in the bending section of the present invention in the CD direction of B.

[0100] exist Figure 4AIn the first region (i.e., the area outside the island where the second layer 200 is stacked on the base layer 50), the first conductor 300 further includes a bending section 306. The bending section 306 includes an inner conductor 360, an outer conductor 370, and a second opening 380. The inner conductor 360 has an inner conductor width 360W, and the outer conductor 370 has an outer conductor width 370W, with the second opening 380 located between the inner conductor 360 and the outer conductor 370. Figures 2A to 2B Unlike other embodiments, in this embodiment, the second opening 380 communicates with the substrate layer 50, and the second opening 380 has a second opening width 380W in the direction parallel to the substrate layer 50. In this embodiment, the second opening 380 may be selectively left unfilled with a filler layer, such as... Figure 4B As shown in C.

[0101] As can be seen from the above embodiments, drilling a hole in the bending section 306 of the first conductor 300 allows the inner conductor 360 to have more stretching space, further transferring strain to the substrate 10 and reducing the strain of the conductor. Simulation results show that the regional strain of the first conductor 300 can be reduced by about 30%.

[0102] The following description Figures 4A to 4B Various example values ​​for the first conductor 300, the inner conductor 360 of the bend section 306, and the outer conductor 370 in the embodiments. Figure 4A In section B, the distance between the second opening 380 and the inner side of the bend section 306 of the first conductor 300 is less than the distance between the second opening 380 and the outer side of the bend section 306 of the first conductor 300. In other words, the cut in the bend section 306 of the first conductor 300 is more inclined inward. For example, the ratio of the inner conductor width 360W to the outer conductor width 370W is between 0.125 and 1. For example, the width of the first conductor 300 is 6.4 micrometers, the width of the second opening 380 is 2.2 micrometers, the width of the outer conductor 370W is 2.2 micrometers, and the width of the inner conductor 360W is 2 micrometers.

[0103] On the other hand, the ratio of the second opening width 380W to the first conductor width W1 is implemented to be between 0.1 and 0.8, such as... Figure 4B As shown in C and D. In this embodiment, the first conductor 300 of the bending section 306 is implemented as a curved conductor connecting two straight sections of the first conductor 300. For example, the first conductor 300 of the bending section 306 is implemented as a curve with an arc θ between 30 degrees and 180 degrees, such as... Figure 4A As shown in B. In other words, the end of the second opening 380 can extend to the intersection of the curved and straight sections.

[0104] and Figures 3A to 3BSimilar to the embodiment where the first conductor 300 is provided with a groove on at least one side of the junction section 302, its structure can also be implemented in the bending section 306 of the first conductor 300. Hereinafter, another embodiment of the first conductor 300 in the bending section 306 will be described. See also... Figures 5A to 5D ,in Figure 5A A schematic top view of a second embodiment of the first conductor in the bent section according to an embodiment of the present invention. Figure 5B A schematic enlarged top view of a second embodiment of the first conductor in the bent section according to an embodiment of the present invention. Figure 5C for Figure 5B A schematic top view of an embodiment in which the bending section of the first conductor has an inner groove. Figure 5D For along Figure 5B A schematic cross-sectional view of the first conductor in the bending section of the present invention in the AB direction according to an embodiment of the present invention, and Figure 5E For along Figure 5B A schematic cross-sectional view of the first conductor in the bending section of the present invention in the CD direction according to an embodiment of the present invention.

[0105] exist Figures 5A to 5C In the first region 205, the first conductor 300 is further configured to include a bending section 306, and a groove is formed on at least one side of the bending section 306. For example, the width of the first conductor 300 in the bending section 306 is the conductor width 306W of the bending section, and an inner groove 352 and an outer groove 353 are formed on both sides of the bending section 306. Furthermore, the filling layer 340 fills the inner groove 352 and the outer groove 353 and contacts the second layer 200 below the first conductor 300, such as... Figure 5E As shown. Alternatively, the bending section 306 may only have an inner groove 352, as... Figure 5C As shown.

[0106] Compared to Figures 4A to 4B The conductor in the bending section is drilled by creating holes. Figures 5A to 5E It is relatively easy to fabricate grooves on both sides of the conductor in the bending section. The following will describe... Figures 5A to 5E Various example values ​​for the first conductor 300, the conductor of the bending section 306, the inner groove 352, and the outer groove 353 in the embodiments. Figure 5B In the bending section 306, the conductor has an inner groove width of 352W and an outer groove width of 353W, and the ratio of the outer groove width 353W to the inner groove width 352W is greater than 0 and less than 1. Figure 5C In the bending section 306, the conductor has only an inner groove width of 352W. In other words, the ratio of the outer groove width of 353W to the inner groove width of 352W is equal to 0.

[0107] On the other hand, the ratio of the conductor width 306W in the bending section to the first conductor width W1 is implemented to be between 0.1 and 0.8, such as... Figure 5D and Figure 5E As shown. In this embodiment, the first conductor 300 of the bending section 306 is implemented as a curved conductor connecting two straight sections of the first conductor 300. For example, the first conductor 300 of the bending section 306 is implemented as a curve with an arc between 30 degrees and 180 degrees, such as... Figure 5B and Figure 5C As shown. In other words, the end of the conductor in the bending section 306 can extend to the junction of the curved and straight sections.

[0108] Furthermore, Figures 2A to 2B Implementation examples, and Figures 4A to 4B The embodiments can be implemented simultaneously on the first conductor 300. See also Figure 6 A and B, among which Figure 6 A is a schematic diagram of a first conductor having both an opening in a boundary section and an opening in a bending section according to an embodiment of the present invention, and Figure 6 Figure B is a schematic diagram comparing the opening lengths of the first conductor in the boundary section and the first conductor in the bending section according to an embodiment of the present invention.

[0109] exist Figure 6 In both A and B, the first conductor 300 includes a conductor with a bend section 306 and a conductor with a junction section 302. Furthermore, the conductor with the bend section 306 includes a second opening 380 in the direction perpendicular to the substrate 50, and the conductor with the junction section 302 includes a first opening 330 in the direction perpendicular to the substrate 50. Figure 6 In section B, the length 380L of the second opening in the direction parallel to the substrate 50 is greater than the length 330L of the first opening 330 in the direction parallel to the substrate 50. Via... Figure 6 In embodiments A and B, the total length of the first wire 300 can be adjusted to include the length of the first opening 330L and the length of the second opening 380L, thereby achieving a better balance between the increase in resistance and the decrease in strain of the first wire 300.

[0110] Furthermore, the substrate 10 with stretchable wires provided in the embodiments of the present invention can have multiple layers of wires, for example, Figure 2B C, Figure 2B D, Figure 3B C, Figure 3B D, Figure 4B C and Figure 4BThe schematic cross-sectional view of D includes a second conductor 400, a third conductor 410, and a fourth conductor 420. The distance from which the second conductor 400 is projected vertically to the substrate 50 is greater than the distance from which the first conductor 300 is projected vertically to the substrate 50. Furthermore, the width of the second conductor 400 is 400W, which is less than the width of the first conductor W1. Similarly, the distances from which the third conductor 410 and the fourth conductor 420 are projected vertically to the substrate 50 are greater than the distance from which the first conductor 300 is projected vertically to the substrate 50. The widths of the third conductor 410 and the fourth conductor 420 are 410W and 420W, respectively, which are less than the width of the first conductor W1.

[0111] When the substrate 10 with stretchable wires has multiple layers of wires, the wire structures of the junction section 302 and bending section 306 described above can be implemented on a portion of the wires. For example, when the wire structure of the junction section 302 described above is implemented on the wire with the maximum width, the junction section 302 can provide more second insulating layers, thus providing a better effect in buffering strain. The substrate 10 with stretchable wires described in the above embodiments can be applied to the display 70 to have a better form factor, such as... Figure 1B As shown.

[0112] The above description is merely a few preferred embodiments of the present invention. It should be noted that various changes and modifications can be made to the present invention without departing from its spirit and principles. Those skilled in the art will understand that the present invention is defined by the appended claims, and that various possible substitutions, combinations, modifications, and uses, etc., do not exceed the scope defined by the appended claims, provided they conform to the intent of the present invention.

Claims

1. A substrate having stretchable conductive lines, characterized by, Include: One basal layer; The first layer is stacked on top of the base layer; A second layer having a first region stacked on the base layer, and the second layer having a second region stacked on the first layer, wherein a boundary between the first region and the second region forms a peripheral region; and A first conductor includes a boundary section, and the projection of the boundary section onto the second layer covers at least a portion of the surrounding area, wherein the first conductor has a first conductor width in the portion outside the boundary section, and a boundary section width smaller than the first conductor width in the boundary section.

2. The substrate as described in claim 1, characterized in that, The first layer is an inorganic layer, and the second layer is a first insulating layer.

3. The substrate as described in claim 1, characterized in that, The boundary section includes: A first opening side portion having a first opening side portion width; A second opening side portion, having a second opening side portion width; and A first opening is located between the first opening side portion and the second opening side portion, wherein the first opening has a first opening width in a direction parallel to the base layer, and wherein the vertical projection range of the first opening side and the second opening side onto the second layer at least covers a portion of the peripheral area.

4. The substrate as described in claim 3, characterized in that, It further includes a filler layer that fills at least the first opening to contact the second layer, wherein the filler layer has the width of the first opening in a direction parallel to the base layer.

5. The substrate as described in claim 4, characterized in that, The filling layer is a second insulating layer.

6. The substrate as claimed in claim 3, characterized in that, The first conductor is electrically connected to an element, and the first conductor has a conductor end between the conductor in the junction section and the element, wherein the first opening does not extend to the conductor end.

7. The substrate as claimed in claim 3, characterized in that, The ratio of the width of the first opening to the width of the first conductor is between 0.1 and 0.

8.

8. The substrate as claimed in claim 3, characterized in that, The length of the first opening projected vertically to one side of the junction is greater than 50% of the width of the first opening side portion, and the length of the first opening projected vertically to the other side of the junction is greater than 50% of the width of the first opening side portion.

9. The substrate as claimed in claim 1, characterized in that, A groove is formed on at least one side of the boundary section.

10. The substrate as claimed in claim 9, characterized in that, It further includes a filler layer that fills the groove to contact the second layer.

11. The substrate as claimed in claim 9, characterized in that, The ratio of the width of the boundary section to the width of the first conductor is between 0.1 and 0.

8.

12. The substrate as claimed in claim 9, characterized in that, The length of the groove projected vertically to one side of the junction is greater than 25% of the width of the junction section, and the length of the groove projected vertically to the other side of the junction is greater than 25% of the width of the junction section.

13. The substrate as claimed in claim 1, characterized in that, The first conductor further includes a bent section, which includes: An inner conductor has an inner conductor width; An outer conductor having an outer conductor width; and A second opening is located between the inner conductor and the outer conductor, and the second opening communicates with the substrate layer, wherein the second opening has a second opening width in a direction parallel to the substrate layer.

14. The substrate as claimed in claim 13, characterized in that, The distance between the location of the second opening and the inner edge of the bent section is less than the distance between the location of the second opening and the outer edge of the bent section.

15. The substrate as claimed in claim 14, characterized in that, The ratio of the width of the inner conductor to the width of the outer conductor is between 0.125 and 1.

16. The substrate as claimed in claim 13, characterized in that, The ratio of the width of the second opening to the width of the first conductor is between 0.1 and 0.

8.

17. The substrate as claimed in claim 13, characterized in that, The bending section is a curve, and the curvature of the curve is between 30 degrees and 180 degrees.

18. The substrate as claimed in claim 1, characterized in that, The first conductor further includes a bent section, at least one side of which has a groove.

19. The substrate as claimed in claim 18, characterized in that, It further includes a filler layer that fills the groove to contact the second layer.

20. The substrate as claimed in claim 18, characterized in that, The groove includes an inner groove and an outer groove, wherein the ratio of the width of the outer groove to the width of the inner groove is greater than or equal to 0 and less than 1.

21. The substrate as claimed in claim 18, characterized in that, The bending section has a bending section width, and the ratio of the bending section width to the width of the first conductor is between 0.1 and 0.

8.

22. The substrate as claimed in claim 18, characterized in that, The bending section is a curve, and the curvature of the curve is between 30 degrees and 180 degrees.

23. The substrate as claimed in claim 1, characterized in that, The first conductor further includes a bending section, wherein the boundary section includes a first opening in the direction perpendicular to the substrate, and the bending section includes a second opening in the direction perpendicular to the substrate, wherein the length of the second opening in the direction parallel to the substrate is greater than the length of the first opening in the direction parallel to the substrate.

24. The substrate as claimed in claim 1, characterized in that, It further includes a second conductor, wherein the second conductor has a width smaller than that of the first conductor, and the distance from which the second conductor is vertically projected onto the substrate is different from the distance from which the first conductor is vertically projected onto the substrate.

25. A display, characterized in that, A substrate comprising a stretchable conductor as described in any one of claims 1 to 24.

Images