Stretchable pixel array substrate

Abstract

A stretchable pixel array substrate comprises a substrate, a plurality of pixel structures and a routing. The substrate has a plurality of first areas and a second area, wherein the second area is located between the plurality of first areas. The plurality of pixel structures are respectively arranged on the plurality of first areas of the substrate. The routing is arranged on the second area of ​​the substrate and electrically connects the plurality of pixel structures. The routing comprises a plurality of curved sections connected in series with each other. The plurality of curved sections of the routing comprises a first curved section and a second curved section. The first curved section is a curved section of the routing that is closest to one of the plurality of first areas. One of the plurality of pixel structures is arranged on one of the plurality of first areas. The first curved section is arranged between one of the plurality of pixel structures and the second curved section. The first curved portion of the first curved section and the second curved portion have a distance A in the first direction. The first curved portion of the second curved section and the second curved portion have a distance B in the first direction. A>B.

Description

Technical Field

[0001] The present invention relates to a pixel array substrate, and in particular to a stretchable pixel array substrate. Background Art

[0002] With the rapid development of electronic technology, electronic products are constantly being innovated. In order to enable electronic products to be applied in various fields, the characteristics of stretchability, lightness and unlimited appearance are gradually valued. In other words, electronic products are gradually required to have different appearances according to different application methods and application environments, so electronic products need to be stretchable.

[0003] However, when electronic products are stretched, they may be subjected to stress and cause structural fractures, or even internal circuit disconnection. Therefore, how to make stretchable electronic products have good reliability is one of the issues that need to be solved urgently. Summary of the invention

[0004] The present invention provides a stretchable pixel array substrate with good stretchability.

[0005] The stretchable pixel array substrate of the present invention comprises a substrate, a plurality of pixel structures and a routing. The substrate has a plurality of first areas and a second area, wherein the second area is located between the plurality of first areas. A plurality of pixel structures are respectively arranged on the plurality of first areas of the substrate. The routing is arranged on the second area of ​​the substrate and electrically connects the plurality of pixel structures. The routing comprises a plurality of curved sections connected in series with each other. Each curved section comprises a first curved portion, a second curved portion and a third curved portion, the second curved portion is connected between the first curved portion and the third curved portion, the bending direction of the first curved portion is different from the bending direction of the third curved portion, and the third curved portion of each curved section is connected to the first curved portion of the next curved section. The plurality of curved sections of the routing comprise a first curved section and a second curved section. The first curved section is a curved section that is closest to one of the plurality of first areas in the routing. One of the plurality of pixel structures is arranged on one of the plurality of first areas, and the first curved section is arranged between one of the plurality of pixel structures and the second curved section. The first curved portion of the first curved section and the second curved portion of the first curved section have a distance A in the first direction, the first curved portion of the second curved section and the second curved portion of the second curved section have a distance B in the first direction, and A>B.

[0006] In one embodiment of the present invention, 1<(A / B)<10.

[0007] In one embodiment of the present invention, 1<(A / B)<4.

[0008] In one embodiment of the present invention, one of the plurality of first regions has a width W, and A≤W.

[0009] In one embodiment of the present invention, the first curved section further comprises a first straight portion and a second straight portion. The first straight portion is connected between the first curved portion and the second curved portion. The second straight portion is connected between the second curved portion and the third curved portion. The first direction is interlaced with the second direction, and the first straight portion and the second straight portion have a distance S in the second direction.

[0010] In one embodiment of the present invention, the first straight portion has a length L, and L>S. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 FIG. 1 is a top view of a stretchable pixel array substrate 10 according to an embodiment of the present invention.

[0012] Figure 2 FIG. 1 is a partially enlarged schematic diagram of a stretchable pixel array substrate 10 according to an embodiment of the present invention.

[0013] Figure 3 Schematic diagram of an equivalent circuit of a sub-pixel structure SPX of a stretchable pixel array substrate 10 according to an embodiment of the present invention.

[0014] Figure 4 FIG. 1 is an enlarged schematic diagram of a curved section 122 of a wiring 120 according to an embodiment of the present invention.

[0015] Figure 5 FIG. 1 shows the strain amount on the wiring 120 of the stretchable pixel array substrate 10 according to an embodiment of the present invention.

[0016] Figure 6 The strain amount on the trace 120 ′ of the stretchable pixel array substrate 10 ′ of a comparative example is shown.

[0017] Figure 7 The maximum strain of the wiring corresponding to each length L of the stretchable pixel array substrate 10 according to one embodiment of the present invention is shown when the distance S is fixed at 3.5 μm.

[0018] Figure 8 FIG. 1 is a top view of a stretchable pixel array substrate 10A according to another embodiment of the present invention.

[0019] Fig. 9 FIG. 1 is an enlarged schematic diagram of a first curved section 122 - 1 and a second curved section 122 - 2 of a wiring 120 of a stretchable pixel array substrate 10A according to another embodiment of the present invention.

[0020] Fig.10 FIG. 1 is a partially enlarged schematic diagram of a stretchable pixel array substrate 10A according to another embodiment of the present invention.

[0021] Fig.11It is a partial enlarged schematic diagram of a stretchable pixel array substrate 10A'-1 of a comparative example.

[0022] Fig.12 It is a partially enlarged schematic diagram of a stretchable pixel array substrate 10A'-2 of another comparative example.

[0023] Fig.13 It is a partially enlarged schematic diagram of a stretchable pixel array substrate 10A'-3 of another comparative example.

[0024] Description of reference numerals:

[0025] 10, 10', 10A, 10A'-1, 10A'-2, 10A'-3: Stretchable pixel array substrate

[0026] 110: Base

[0027] 112: District 1

[0028] 114: District 2

[0029] 116: Through hole

[0030] 120, 120', 120A: Routing

[0031] 122: Bend segment

[0032] 122a: First bend

[0033] 122b: Second bend

[0034] 122as, 122bs: inside

[0035] 122c: Third bend

[0036] 122e: First straight line

[0037] 122f: Second straight line

[0038] 122g: Fourth bend

[0039] 122h: Connection

[0040] 122-1: First bend

[0041] 122-2: Second bend

[0042] A, B, S: distance

[0043] c1, c2: center of curvature

[0044] d1: first direction

[0045] d2: second direction

[0046] d3: third direction

[0047] d4: fourth direction

[0048] d5: straight line extension direction

[0049] I1, I2, I3, I4: Boundary

[0050] K: Connection

[0051] L: Length

[0052] o1, o2: virtual circle

[0053] PE: Pixel electrode

[0054] PX: Pixel structure

[0055] R: Local

[0056] r1, r2: radius of curvature

[0057] SPX: Sub-Pixel Structure

[0058] T1: First transistor

[0059] T1a, T2a: First end

[0060] T1b, T2b: Second end

[0061] T1c, T2c: Control terminal

[0062] T2: Second transistor

[0063] W: Width DETAILED DESCRIPTION

[0064] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals are used in the drawings and the description to refer to the same or like parts.

[0065] It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected to" another element, it may be directly on or connected to another element, or an intermediate element may also exist. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intermediate elements. As used herein, "connection" may refer to physical and / or electrical connection. Furthermore, "electrical connection" or "coupling" may refer to the presence of other elements between two elements.

[0066] As used herein, "about", "approximately", or "substantially" includes the stated value and the average value within an acceptable deviation range of the particular value determined by one of ordinary skill in the art, taking into account the measurement in question and the particular amount of error associated with the measurement (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, as used herein, "about", "approximately", or "substantially" can select a more acceptable deviation range or standard deviation depending on the optical property, etching property or other property, and can apply to all properties without a single standard deviation.

[0067] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and the present invention, and will not be interpreted as an idealized or overly formal meaning unless explicitly defined as such herein.

[0068] Figure 1 FIG. 1 is a top view of a stretchable pixel array substrate 10 according to an embodiment of the present invention. Figure 2 FIG. 1 is a partially enlarged schematic diagram of a stretchable pixel array substrate 10 according to an embodiment of the present invention. Figure 2 correspond Figure 1 The local R.

[0069] Please refer to Figure 1 and Figure 2 , the stretchable pixel array substrate 10 includes a substrate 110. The substrate 110 has a plurality of first regions 112 and a second region 114, wherein the second region 114 is located between the plurality of first regions 112. In the present embodiment, the substrate 110 may selectively have a plurality of through holes 116 to define a plurality of islands and bridges of the substrate 110, wherein the plurality of islands are the plurality of first regions 112 of the substrate 110, and the bridges are the second regions 114 of the substrate 110. However, the present invention is not limited thereto, and in other embodiments, the substrate 110 may not have the through holes 116, and the substrate 110 may also be a solid substrate with a whole surface.

[0070] The substrate 110 is used to carry other components of the stretchable pixel array substrate 10. The substrate 110 has elasticity and extensibility and can be stretched. For example, in the present embodiment, the material of the substrate 110 may include polyimide (PI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polycarbonates (PC), polyethersulfone (PES) or polyarylate, other suitable materials or a combination of at least two of the aforementioned materials, but the present invention is not limited thereto.

[0071] Please refer to Figure 1 , the stretchable pixel array substrate 10 further includes a plurality of pixel structures PX. The plurality of pixel structures PX are respectively disposed in a plurality of first regions 112 of the substrate 110. Each first region 112 has at least one pixel structure PX, and each pixel structure PX includes at least one sub-pixel structure SPX. For example, in the present embodiment, a pixel structure PX may be disposed on each first region 112, and the pixel structure PX may include three sub-pixel structures SPX for displaying red, blue, and green, respectively, but the present invention is not limited thereto.

[0072] Figure 3 Schematic diagram of an equivalent circuit of a sub-pixel structure SPX of a stretchable pixel array substrate 10 according to an embodiment of the present invention.

[0073] Please refer to Figure 1 and Figure 3 For example, in the present embodiment, each sub-pixel structure SPX may include a first transistor T1 and a pixel electrode PE, the first transistor T1 having a first end T1a, a second end T1b and a control end T1c, wherein the pixel electrode PE is electrically connected to the second end T1b of the first transistor T1. In the present embodiment, each sub-pixel structure SPX may further selectively include a second transistor T2, wherein the second transistor T2 has a first end T2a, a second end T2b and a control end T2c, and the second end T2b of the second transistor T2 is electrically connected to the control end T1c of the first transistor T1.

[0074] Please refer to Figure 1 and Figure 2 The stretchable pixel array substrate 10 further includes a wiring 120 disposed on the second region 114 of the substrate 110 and electrically connected to the plurality of pixel structures PX respectively located on the plurality of first regions 112. Figure 1 , Figure 2 and Figure 3In the present embodiment, the wiring 120 is, for example, a gate driving line, wherein the gate driving line is electrically connected to a plurality of control terminals T2c of a plurality of second transistors T2 of a plurality of sub-pixel structures SPX of a plurality of pixel structures PX respectively located in a plurality of first regions 112. However, the present invention is not limited thereto, and in other embodiments, the wiring 120 may also be a data line, a power line, a common line, or other types of conducting wires, wherein the data line is electrically connected to a plurality of first terminals T2a of a plurality of second transistors T2 of a plurality of sub-pixel structures SPX of a plurality of pixel structures PX respectively located in a plurality of first regions 112, and the power line is electrically connected to a plurality of first terminals T1a of a plurality of first transistors T1 of a plurality of sub-pixel structures SPX of a plurality of pixel structures PX respectively located in a plurality of first regions 112.

[0075] Figure 4 FIG. 1 is an enlarged schematic diagram of a curved section 122 of a wiring 120 according to an embodiment of the present invention.

[0076] Please refer to Figure 1 , Figure 2 and Figure 4 , the trace 120 includes a plurality of curved segments 122 connected in series. Figure 2 and Figure 4 Each curved segment 122 has a first curved portion 122a (indicated at Figure 4 ), the second curved portion 122b (marked at Figure 4 ) and the third curved portion 122c (indicated at Figure 4 ), wherein the second curved portion 122b is connected between the first curved portion 122a and the third curved portion 122c, and the bending direction of the first curved portion 122a is different from the bending direction of the third curved portion 122c. Figure 4 For example, the first curved portion 122a and the third curved portion 122c may be bent toward the upper right and upper left, respectively, and the second curved portion 122b may be bent toward the lower side.

[0077] Please refer to Figure 2 and Figure 4 , the third curved portion 122c of each curved segment 122 is connected to the first curved portion 122a of the next curved segment 122. For example, in the present embodiment, the plurality of curved segments 122 of the routing 120 include a first curved segment 122-1 and a second curved segment 122-2, the first curved segment 122-1 is located between the second curved segment 122-2 and the pixel structure PX on the right, the first curved portion 122a of the first curved segment 122-1 is connected to the pixel structure PX on the right, and the third curved portion 122c of the first curved segment 122-1 is connected to the first curved portion 122a of the second curved segment 122-2.

[0078] Please refer to Figure 1 and Figure 2 The plurality of curved segments 122 of the routing line 120 include a first curved segment 122-1 and a second curved segment 122-2, wherein the first curved segment 122-1 is the closest to a first region 112 (for example: Figure 2 In the curved segment 122 of the first area 112 on the right side, a pixel structure PX is disposed on a first area 112, and the first curved segment 122-1 is disposed between a pixel structure PX and the second curved segment 122-2. In this embodiment, the first curved segment 122-1 is directly connected to the pixel structure PX, and the second curved segment 122-2 is directly connected to the first curved segment 122-1.

[0079] Please refer to Figure 2 and Figure 4 , the first curved portion 122a of the first curved segment 122-1 and the second curved portion 122b of the first curved segment 122-1 have a distance A in the first direction d1, and the first curved portion 122a of the second curved segment 122-2 and the second curved portion 122b of the second curved segment 122-2 have a distance B in the first direction d1. It is worth noting that A>B. In other words, the amplitude (i.e., distance A) of the curved segment 122 closest to the first area 112 is greater than the amplitude (i.e., distance B) of the other curved segment 122 far away from the first area 112. In the entire routing 120, the inner side 122bs of the second curved portion 122b of a curved segment 122 closest to the first area 112 is subjected to the largest strain. Through the design of A>B, the maximum strain borne by the routing 120 can be significantly reduced, thereby greatly improving the stretchability of the stretchable pixel array substrate 10. The following is combined with Figure 5 and Figure 6 Confirm it.

[0080] Figure 5 FIG. 1 shows the strain amount on the wiring 120 of the stretchable pixel array substrate 10 according to an embodiment of the present invention. Figure 6 The strain amount on the trace 120 ′ of the stretchable pixel array substrate 10 ′ of a comparative example is shown.

[0081] Figure 6 The stretchable pixel array substrate 10' of the comparative example is Figure 5 The stretchable pixel array substrate 10 of the embodiment is similar to the stretchable pixel array substrate 10 of the embodiment, and the difference between the two is that: Figure 5 In the stretchable pixel array substrate 10 of the embodiment, the amplitude of the curved section 122 closest to the first area 112 is greater than the amplitude of another curved section 122 away from the first area 112; however, in Figure 6 In the stretchable pixel array substrate 10' of the comparative example, the amplitude of each curved segment 122 is the same. Figure 5 and Figure 6The data shows that by designing the amplitude of a curved section 122 closest to the first region 112 to be larger than the amplitude of another curved section 122 far from the first region 112 , the maximum strain of the trace 120 can be significantly reduced from 9.0% of the trace 120 ′ to 3.3%.

[0082] Please refer to Figure 2 , in this embodiment, 1<(A / B)<10; that is, the amplitude of the curved segment 122 closest to the first area 112 is greater than the amplitude of the other curved segment 122 away from the first area 112 and less than 10 times the amplitude of the other curved segment 122. Preferably, 1<(A / B)<4. That is, the amplitude of the curved segment 122 closest to the first area 112 is greater than the amplitude of the other curved segment 122 away from the first area 112 and less than 4 times the amplitude of the other curved segment 122, but the present invention is not limited thereto.

[0083] In addition, please refer to Figure 1 and Figure 2 , the first region 112 has a width W, and A≤W. That is, the amplitude (ie, distance A) of a curved segment 122 closest to the first region 112 is not greater than the width W of the first region 112 of the substrate 110. Figure 1 In this embodiment, the first curved segment 122-1 and the second curved segment 122-2 are arranged in the third direction d3, the fourth direction d4 is perpendicular to the third direction d3, and the width W refers to the width of the first area 112 of the substrate 110 in the fourth direction d4.

[0084] Please refer to Figure 2 and Figure 4 In this embodiment, the first curved section 122-1 may further include a first straight portion 122e and a second straight portion 122f, wherein the first straight portion 122e is connected between the first curved portion 122a and the second curved portion 122b, and the second straight portion 122f is connected between the second curved portion 122b and the third curved portion 122c. The first straight portion 122e and the second straight portion 122f may be provided to adjust the amplitude (i.e., the distance A) of the first curved section 122-1 of the routing line 120, so as to reduce the maximum strain amount borne by the entire routing line 120 at the inner side 122bs of the second curved portion 122b of the first curved section 122-1.

[0085] Please refer to Figure 2 and Figure 4, the first direction d1 intersects with the second direction d2, and the first straight portion 122e and the second straight portion 122f of the first bent segment 122-1 have a distance S in the second direction d2. The first straight portion 122e has a length L in its straight extension direction d5, and L > S. In short, the length L of the first straight portion 122e is greater than the distance S between the first straight portion 122e and the second straight portion 122f.

[0086] Figure 7 Fig. shows the maximum strain of the trace corresponding to each length L when the distance S of the stretchable pixel array substrate 10 according to an embodiment of the present invention is fixed at 3.5 μm.

[0087] Please refer to Figure 4 and Figure 7 , from Figure 7 the data, it can be seen that when 0 < L < S, the maximum strain of the trace (~10%) is actually greater than the maximum strain of the trace (~9%) when L = 0 μm. However, when L > S, the maximum strain of the trace decreases significantly as the length L increases. Thus, it can be proved that the design of L > S can help reduce the maximum strain of the trace and improve the stretchability.

[0088] Please refer to Figure 4 , it should be noted that in this embodiment, the boundaries I1 and I2 of the first straight portion 122e are defined by using the curvature radius r1 of the inner edge 122as of the first bent portion 122a and the curvature radius r2 of the inner edge 122bs of the second bent portion 122b respectively. Specifically, the inner edge 122as of the first bent portion 122a has a curvature center c1 and a curvature radius r1. A virtual circle o1 is drawn with the curvature center c1 as the center and the curvature radius r1 as the radius. The partial trace 120 within 1 / 4 of the circumference of the virtual circle o1 is the first bent portion 122a, and then the boundary (i.e., boundary I1) between the first bent portion 122a and the first straight portion 122e can be defined; the inner edge 122bs of the second bent portion 122b has a curvature center c2 and a curvature radius r2. A virtual circle o2 is drawn with the curvature center c2 as the center and the curvature radius r2 as the radius. The partial trace 120 within 1 / 4 of the circumference of the virtual circle o2 is the second bent portion 122b, and then the boundary (i.e., boundary I2) between the second bent portion 122b and the first straight portion 122e can be defined. The partial trace 120 between the above boundary I1 and boundary I2 is the first straight portion 122e. The length L of the first straight portion 122e refers to the distance between the boundary I1 and boundary I2 in the straight extension direction d5 of the first straight portion 122e. The boundaries I3 and I4 of the second straight portion 122f can be defined by a similar method, which will not be elaborated here.

[0089] In this embodiment, the first straight portion 122e and the second straight portion 122f may be selectively not completely parallel. When the first straight portion 122e and the second straight portion 122f are not completely parallel to each other, the second direction d2 may be parallel to the line K connecting the geometric center C122e of the first straight portion 122e and the geometric center C122f of the second straight portion 122f, and the distance S between the first straight portion 122e and the second straight portion 122f may refer to the distance on the line K connecting the two. However, the present invention is not limited thereto. In other embodiments, the first straight portion 122e and the second straight portion 122f may also be parallel to each other. When the first straight portion 122e and the second straight portion 122f are parallel to each other, the second direction d2 may be perpendicular to the first straight portion 122e, and the distance S between the first straight portion 122e and the second straight portion 122f may refer to the distance between the two in the direction perpendicular to the first straight portion 122e.

[0090] It must be noted that the following embodiments use the component numbers and some contents of the previous embodiments, wherein the same number is used to represent the same or similar components, and the description of the same technical contents is omitted. The description of the omitted parts can refer to the previous embodiments, and the following embodiments will not be repeated.

[0091] Figure 8 FIG. 1 is a top view of a stretchable pixel array substrate 10A according to another embodiment of the present invention. Figure 8 The stretchable pixel array substrate 10A and Figure 1 The stretchable pixel array substrate 10 is similar to the stretchable pixel array substrate 10, and the difference between the two is: Figure 8 The base 110 of the stretchable pixel array substrate 10A does not have Figure 1 The through hole 116 of the stretchable pixel array substrate 10, and Figure 8 The wiring 120A of the stretchable pixel array substrate 10A is connected to Figure 1 The wiring 120 of the stretchable pixel array substrate 10 is different.

[0092] Fig. 9 FIG. 1 is an enlarged schematic diagram of a first curved section 122 - 1 and a second curved section 122 - 2 of a wiring 120A of a stretchable pixel array substrate 10A according to another embodiment of the present invention. Figure 8 and Fig. 9Specifically, in this embodiment, in addition to the first curved portion 122a, the second curved portion 122b, the third curved portion 122c, the first straight portion 122e and the second straight portion 122f, each curved segment 122 also includes a fourth curved portion 122g and a connecting portion 122h, wherein the bending direction of the fourth curved portion 122g (for example, toward the lower right direction) is different from the bending direction of the second curved portion 122b (for example, toward the lower left direction), the connecting portion 122h is connected between the second curved portion 122b and the fourth curved portion 122g, and the fourth curved portion 122g is connected between the connecting portion 122h and the second straight portion 122f.

[0093] Fig.10 FIG. 1 is a partially enlarged schematic diagram of a stretchable pixel array substrate 10A according to another embodiment of the present invention. Fig.11 It is a partial enlarged schematic diagram of a stretchable pixel array substrate 10A'-1 of a comparative example. Fig.12 It is a partially enlarged schematic diagram of a stretchable pixel array substrate 10A'-2 of another comparative example. Fig.13 It is a partially enlarged schematic diagram of a stretchable pixel array substrate 10A'-3 of another comparative example.

[0094] Fig.11 , Fig.12 and Fig.13 The stretchable pixel array substrates 10A'-1, 10A'-2, 10A'-3 of the comparative example and Fig.10 The stretchable pixel array substrate 10A of the embodiment is similar, and the difference therebetween is that the ratio of the distance A to the distance B of the stretchable pixel array substrates 10A'-1, 10A'-2, and 10A'-3 of the comparison example is different from the ratio of the distance A to the distance B of the stretchable pixel array substrate 10A of the embodiment.

[0095] Specifically, in Fig.10 In the stretchable pixel array substrate 10A of the embodiment, the distance A and the distance B are 16 μm and 10 μm respectively, and the ratio of the distance A to the distance B is A:B=16:10; Fig.11 In the stretchable pixel array substrate 10A'-1 of the comparative example, the distance A and the distance B are 10 μm and 16 μm respectively, and the ratio of the distance A to the distance B is A:B=10:16; Fig.12 In the stretchable pixel array substrate 10A'-2 of the comparative example, the distance A and the distance B are 10 μm and 10 μm respectively, and the ratio of the distance A to the distance B is A:B=10:10; Fig.13 In the stretchable pixel array substrate 10A′-3 of the comparative example, the distance A and the distance B are 16 μm and 16 μm respectively, and the ratio of the distance A to the distance B is A:B=16:16.

[0096] The following table lists Figures 10 to 13 The strain and resistance of the stretchable pixel array substrates 10A, 10A′-1, 10A′-2, and 10A′-3 of the embodiments and comparative examples.

[0097]

[0098] [Table 1]

[0099] Please refer to Figures 10 to 13 From the data in Table 1 above, we can see that Fig.10 The strain and resistance of the stretchable pixel array substrate 10A of the embodiment are both low, which can significantly improve the stretchability of the stretchable pixel array substrate 10A under the premise that the resistance of the wiring 120A is within an acceptable range.

Claims

1. A stretchable pixel array substrate, comprising: A substrate having a plurality of first regions and a second region, wherein the second region is located between the plurality of first regions; A plurality of pixel structures are respectively disposed on the plurality of first regions of the substrate; and A routing line is disposed on the second region of the substrate and electrically connected to the plurality of pixel structures, wherein the routing line includes a plurality of curved sections connected in series, each curved section having a first curved portion, a second curved portion and a third curved portion, the second curved portion is connected between the first curved portion and the third curved portion, the bending direction of the first curved portion is different from the bending direction of the third curved portion, the third curved portion of each curved section is connected to the first curved portion of the next curved section, and the plurality of curved sections of the routing line include: a first curved section, wherein the first curved section is a curved section of the routing line that is closest to one of the plurality of first areas; as well as a second curved segment, wherein one of the plurality of pixel structures is disposed on the one of the plurality of first regions, and the first curved segment is disposed between the one of the plurality of pixel structures and the second curved segment; The first curved portion of the first curved section and the second curved portion of the first curved section have a distance A in a first direction, the first curved portion of the second curved section and the second curved portion of the second curved section have a distance B in the first direction, and A>B.

2. The stretchable pixel array substrate of claim 1, wherein 1<(A / B)<10.

3. The stretchable pixel array substrate of claim 1, wherein 1<(A / B)<4. 4 . The stretchable pixel array substrate as claimed in claim 1 , wherein the one of the plurality of first regions has a width W, and A≤W.

5. The stretchable pixel array substrate according to claim 1, wherein the first curved section further comprises: a first straight portion connected between the first curved portion and the second curved portion; and A second straight portion is connected between the second curved portion and the third curved portion, wherein the first direction is interlaced with a second direction, and a distance S is provided between the first straight portion and the second straight portion in the second direction.

6. The stretchable pixel array substrate as described in claim 5, wherein the first straight line portion has a length L, and L>S.

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