TWI812463B - Stretchable pixel array substrate - Google Patents

Abstract

A stretchable pixel array substrate includes a substrate, island elements, an auxiliary pattern and a wire. The island elements are respectively disposed on pixel regions of the substrate. Each of the island elements includes a pixel driving circuit and has a sidewall. The auxiliary pattern is disposed on a circuit region of the substrate and extends to at least one portion of one of the pixel regions. The auxiliary pattern covers at least one portion of the sidewall of an island element and at least one portion of an upper surface of the island element facing away from the substrate. The wire is disposed on the auxiliary pattern and is electrically connected to pixel driving circuits of the island elements.

Description

Stretchable pixel array substrate

The present invention relates to a pixel array substrate, and in particular to a stretchable pixel array substrate.

With the rapid development of electronic technology, electronic products are constantly being introduced. In order to enable electronic products to be used in various fields, the characteristics of stretchability, thinness and unrestricted appearance are gradually gaining attention. 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.

However, when electronic products are stretched, they may suffer structural fractures due to stress, and may even cause internal circuit breakage. Therefore, how to make stretchable electronic products have good manufacturing yield and product reliability is an issue that needs to be solved urgently.

The invention provides a stretchable pixel array substrate with high reliability.

The stretchable pixel array substrate of the present invention includes a substrate, a plurality of island-shaped components, auxiliary patterns, wires and an insulating layer. The substrate has a plurality of pixel areas and a line area, wherein the line area is located between the multiple pixel areas and connected to the multiple pixel areas. A plurality of island-shaped elements are respectively disposed on a plurality of pixel areas of the substrate, wherein each island-shaped element includes a pixel driving circuit and has sidewalls. The auxiliary pattern is disposed on the circuit area of the substrate and extends to at least a part of one of the plurality of pixel areas. The auxiliary pattern covers at least a part of the side wall of the island-shaped component and at least a part of the upper surface of the island-shaped component facing away from the substrate. The wires are arranged on the auxiliary pattern and are electrically connected to the plurality of pixel driving circuits of the plurality of island-shaped components. The insulation covers the wires and island components. The auxiliary pattern has a contact window, the contact window of the auxiliary pattern overlaps at least a part of the upper surface of the island-shaped component facing away from the substrate, and the wires are electrically connected to the plurality of pixel driving circuits of the plurality of island-shaped components through the contact window of the auxiliary pattern. one of.

In one embodiment of the present invention, the above-mentioned auxiliary pattern is provided between the conductive line and at least a part of the upper surface of the island-shaped component, the auxiliary pattern is provided between the conductive line and at least a part of the side wall of the island-shaped component, and the auxiliary pattern is provided Between the conductor and the circuit area of the substrate.

In an embodiment of the present invention, the vertical projected area of a part of the conductor on the pixel area of the substrate is less than or equal to the vertical projected area of a part of the auxiliary pattern on the pixel area of the substrate.

In an embodiment of the present invention, the Young's modulus of the above-mentioned auxiliary pattern is less than 10 GPa.

In an embodiment of the present invention, the above-mentioned auxiliary pattern is arranged in an island shape A portion of the upper surface of the element has a thickness, and the thickness is less than 10 μm.

In one embodiment of the present invention, the upper surface of the island-shaped component includes a peripheral area and a middle area. The peripheral area of the upper surface of the island-shaped component is connected to the side wall of the island-shaped component and the middle area of the upper surface of the island-shaped component. Between them, the auxiliary pattern covers the side wall of the island-shaped component and the peripheral area of the upper surface of the island-shaped component, and the auxiliary pattern has an opening that overlaps the middle area of the upper surface of the island-shaped component.

In one embodiment of the present invention, the upper surface of the above-mentioned island-shaped component has an interface with the side wall of the island-shaped component. The interface includes a plurality of sides and a plurality of corners disposed between the plurality of sides; the auxiliary patterns include each other. A plurality of separated auxiliary parts respectively span multiple sides of the interface, and multiple corners of the interface are located between the multiple auxiliary parts of the auxiliary pattern.

In one embodiment of the present invention, the upper surface of the island-shaped component includes a peripheral area and a middle area. The peripheral area of the upper surface of the island-shaped component is connected to the side wall of the island-shaped component and the middle area of the upper surface of the island-shaped component. between, and the peripheral area of the upper surface of the island-shaped component has a plurality of side sub-regions and a plurality of corner sub-regions arranged between the plurality of side sub-regions; the auxiliary pattern covers the side walls of the island-shaped component and the plurality of corner sub-regions. A plurality of first parts connected to the side sub-regions, a plurality of side sub-regions on the upper surface of the island-shaped component and a middle region on the upper surface of the island-shaped component; the auxiliary pattern has a plurality of notches, respectively overlapping the island-shaped component The plurality of corner sub-regions on the upper surface and the side walls of the island-shaped component are respectively connected to a plurality of second portions connected to the plurality of corner sub-regions.

10, 10A, 10B, 10C: stretchable pixel array substrate

110: Base

112: Pixel area

114: Line area

120:Buffer layer

120a, 140a, 160a, ISa: side wall

130:Semiconductor pattern

140: Gate insulation layer

150:Control terminal

160: Interlayer dielectric layer

162, 174: Contact window

170, 170A, 170B, 170C: Auxiliary patterns

170A-1: Auxiliary Department

172:Open your mouth

176: missing corner

182:First end

186:Wire

190:Insulation layer

200: Conductive pattern

210:Flat layer

220:Transparent conductive pattern

230: Light emitting diode components

IS: Island component

ISa-1:Part One

ISa-2:Part 2

ISb: upper surface

ISb-1: Intermediate Zone

ISb-2: Surrounding area

ISb-2a: side subarea

ISb-2b: corner subarea

i:junction

i1: side

i2: corner

L170: extension length

PC: pixel drive circuit

T: thin film transistor

T170:Thickness

I-I’, II-II’, III-III’: section line

FIG. 1 is a schematic three-dimensional view of a stretchable pixel array substrate 10 according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of the island element IS, the auxiliary pattern 170 and the light emitting diode element 230 of the stretchable pixel array substrate 10 according to an embodiment of the present invention.

FIG. 3 is a schematic cross-sectional view of a stretchable pixel array substrate 10 according to an embodiment of the present invention.

FIG. 4 is a schematic top view of the auxiliary patterns 170 and conductors 186 of the stretchable pixel array substrate 10 according to an embodiment of the present invention.

FIG. 5 shows the relationship between the thickness T170 of a part of the auxiliary pattern 170 provided on the upper surface ISb of the island-shaped element IS and the strain of the island-shaped element IS at the end of the wire 186 according to an embodiment of the present invention.

FIG. 6 shows the relationship between the overall strain of the stretchable pixel array substrate 10 and the strain of the island element IS under various extension lengths L170 according to an embodiment of the present invention.

FIG. 7 is a schematic diagram of the island element IS, the auxiliary pattern 170A and the light emitting diode element 230 of the stretchable pixel array substrate 10A according to another embodiment of the present invention.

FIG. 8 is a schematic diagram of the island element IS, the auxiliary pattern 170B and the light emitting diode element 230 of the stretchable pixel array substrate 10B according to another embodiment of the present invention.

FIG. 9 is a schematic cross-sectional view of a stretchable pixel array substrate 10B according to another embodiment of the present invention.

Figure 10 shows a stretchable pixel array substrate 10C according to yet another embodiment of the present invention. Schematic diagram of the island element IS, the auxiliary pattern 170C and the light emitting diode element 230.

FIG. 11 is a schematic cross-sectional view of a stretchable pixel array substrate 10C according to yet another embodiment of the present invention.

Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numbers are used in the drawings and descriptions to refer to the same or similar parts.

It will 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 can be directly on or connected to the other element, or Intermediate elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connected" may refer to a physical and/or electrical connection. Furthermore, "electrical connection" or "coupling" may mean the presence of other components between two components.

As used herein, "about," "approximately," or "substantially" includes the stated value and the average within an acceptable range of deviations from the particular value as determined by one of ordinary skill in the art, taking into account the measurements in question and the A specific amount of error associated with a measurement (i.e., the limitations of the measurement system). For example, "about" may mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, the terms "about", "approximately" or "substantially" used herein may be used to select a more acceptable deviation range or standard deviation based on optical properties, etching properties or other properties, and one standard deviation may not apply to all properties. .

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 this invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be construed to have meanings consistent with their meanings in the context of the relevant technology and the present invention, and are not to be construed as idealistic or excessive Formal meaning, unless expressly defined as such herein.

FIG. 1 is a schematic three-dimensional view of a stretchable pixel array substrate 10 according to an embodiment of the present invention. FIG. 2 is a schematic diagram of the island element IS, the auxiliary pattern 170 and the light emitting diode element 230 of the stretchable pixel array substrate 10 according to an embodiment of the present invention. FIG. 3 is a schematic cross-sectional view of a stretchable pixel array substrate 10 according to an embodiment of the present invention. Figure 3 corresponds to the section line I-I' of Figure 1. FIG. 1 shows the base 110 , the island element IS, the auxiliary pattern 170 and the wire 186 of the stretchable pixel array substrate 10 of FIG. 3 , while omitting other components of the stretchable pixel array substrate 10 .

Referring to FIGS. 1 and 3 , the stretchable pixel array substrate 10 includes a base 110 . The substrate 110 has a plurality of pixel areas 112 and a circuit area 114, wherein the circuit area 114 is located between the plurality of pixel areas 112 and connected to the plurality of pixel areas 112. The base 110 is stretchable. For example, in this embodiment, the substrate 110 can be made of organic polymers, such as: polyimide (PI), polyethylene naphthalate (PEN), polyterephthalate Ethylene terephthalate (PET), polycarbonates (PC), polyether sulfone (PES) or polyarylate (polyarylate), other suitable materials, or at least two of the aforementioned materials combination, However, the present invention is not limited to this.

Referring to FIGS. 1 , 2 and 3 , the stretchable pixel array substrate 10 further includes a plurality of island elements IS, which are respectively disposed on a plurality of pixel areas 112 of the substrate 110 . Each island element IS includes a pixel driving circuit PC and has a side wall ISa. The side wall ISa of the island-shaped component IS is aligned with the boundary between the pixel area 112 and the line area 114 .

Please refer to FIG. 1 and FIG. 3. In this embodiment, the pixel driving circuit PC of each island element IS may include a thin film transistor T. The thin film transistor T has a control terminal 150, a semiconductor pattern 130, and is disposed on the control terminal. The gate insulating layer 140 between 150 and the semiconductor pattern 130 and the first end 182 and the second end (not shown) respectively electrically connected to two different areas of the semiconductor pattern 130, and the sidewall ISa of the island element IS may include Sidewalls 140a of the gate insulating layer 140.

In this embodiment, each island-shaped component IS may also optionally include a buffer layer 120, where the buffer layer 120 is disposed on the substrate 110, the thin film transistor T is disposed on the buffer layer 120, and the sidewalls of the island-shaped component IS ISa may also optionally include sidewalls 120a of the buffer layer 120, but the invention is not limited thereto. In this embodiment, each island element IS may also optionally include an interlayer dielectric layer 160. The interlayer dielectric layer 160 may be composed of a single film layer or multiple stacked film layers. The interlayer dielectric layer 160 is provided Between the first end 182 of the thin film transistor T and the control end 150, the sidewall ISa of the island element IS may optionally include the sidewall 160a of the interlayer dielectric layer 160, but the invention is not limited thereto.

Referring to Figures 1, 2 and 3, the stretchable pixel array substrate 10 also includes an auxiliary pattern 170, which is disposed on the circuit area 114 of the substrate 110 and extends at least Extending to at least a portion of the pixel area 112. The auxiliary pattern 170 covers at least a portion of the side wall ISa of the island-shaped component IS and at least a portion of the upper surface ISb of the island-shaped component IS facing away from the substrate 110 . Please refer to Figures 1 and 3. For example, in this embodiment, the upper surface ISb of the island-shaped component IS includes a peripheral area ISb-2 and a middle area ISb-1. The peripheral area of the upper surface ISb of the island-shaped component IS ISb-2 is connected between the side wall ISa of the island-shaped component IS and the middle area ISb-1 of the upper surface ISb of the island-shaped component IS. The auxiliary pattern 170 covers the side wall ISa of the island-shaped component IS and the upper surface of the island-shaped component IS. In the peripheral area ISb-2 of ISb, the auxiliary pattern 170 may have an opening 172, and the opening 172 overlaps with the middle area ISb-1 of the upper surface ISb of the island-shaped element IS, but the invention is not limited thereto.

The material of the auxiliary pattern 170 can be various photosensitive materials with buffering effects. For example, in this embodiment, the Young's modulus of the auxiliary pattern 170 can be less than 10 GPa; the material of the auxiliary pattern 170 can be polyimide (PSPI), phenol-formaldehyde resin (phenol-formaldehyde resin), epoxy resin ( epoxy resin), polyisoprene rubber (polyisoprene rubber) or other appropriate materials; but the present invention is not limited thereto.

Referring to FIGS. 1 and 3 , the stretchable pixel array substrate 10 further includes wires 186 disposed on the auxiliary pattern 170 and electrically connected to a plurality of pixel driving circuits PC of a plurality of island elements IS. For example, in this embodiment, the wires 186 may be gate driving lines of a plurality of pixel driving circuits PC electrically connected to a plurality of island-shaped components IS, a plurality of pixel driving lines electrically connected to a plurality of island-shaped components IS. A common line of the pixel driving circuit PC and a plurality of pixel driving circuits PC electrically connected to the plurality of island elements IS The power lines or data lines of the plurality of pixel driving circuits PC are electrically connected to the plurality of island elements IS, but the present invention is not limited thereto.

The auxiliary pattern 170 has a contact window 174. The contact window 174 of the auxiliary pattern 170 overlaps at least a part of the upper surface ISb of the island element IS facing away from the substrate 110. The conductor 186 can go from the circuit area 114 of the substrate 110 upward to the pixel of the substrate 110. The area 112 extends to span the auxiliary pattern 170 covering the island-shaped device IS, and is electrically connected to the pixel driving circuit PC of the island-shaped device IS through the contact window 174 of the auxiliary pattern 170 . In this embodiment, the wire 186 can also selectively pass through the contact window 162 of the interlayer dielectric layer 160 to be electrically connected to the pixel driving circuit PC of the island element IS, but the invention is not limited thereto.

In this embodiment, based on the consideration of electrical conductivity, the wire 186 is made of metal material. However, the present invention is not limited thereto. According to other embodiments, the wires 186 may also use other conductive materials. For example: alloys, nitrides of metal materials, oxides of metal materials, oxynitrides of metal materials, or stacked layers of metal materials and other conductive materials.

Referring to FIGS. 1 and 3 , the stretchable pixel array substrate 10 further includes an insulating layer 190 covering the wires 186 and the island element IS. The insulating layer 190 can also be called a protective layer. In this embodiment, the material of the insulating layer 190 may be an inorganic material (for example, silicon oxide, silicon nitride, silicon oxynitride, or a stacked layer of at least two of the above materials), an organic material, or a combination thereof.

Please refer to FIGS. 1 and 3 . In this embodiment, the stretchable pixel array substrate 10 may further include a conductive pattern 200 disposed on the insulating layer 190 and connected to the island-shaped The pixel driving circuit PC of the component IS is electrically connected. In this embodiment, the stretchable pixel array substrate 10 may further include a flat layer 210 disposed on the conductive pattern 200 . In this embodiment, the stretchable pixel array substrate 10 may further include a transparent conductive pattern 220 disposed on the flat layer 210 and electrically connected to the conductive pattern 200. The stretchable pixel array substrate 10 is used for bonding with the light emitting diode element 230 to form a stretchable display device. For example, in this embodiment, the light-emitting diode element 230 can be electrically connected to the pixel driving circuit PC of the island element IS through the transparent conductive pattern 220 and the conductive pattern 200, but the invention is not limited thereto.

Please refer to Figures 1, 2 and 3. In this embodiment, each island element IS can be provided with a plurality of light emitting diode elements 230 that respectively emit first color light, second color light and third color light. ; The first color light, the second color light and the third color light are, for example, red light, green light and blue light respectively; but the invention is not limited thereto.

Please refer to FIGS. 1 and 3 . In this embodiment, the auxiliary pattern 170 is disposed between the conductive wire 186 and at least a part of the upper surface ISb of the island-shaped component IS. The auxiliary pattern 170 is further disposed between the conductive wire 186 and the island-shaped component IS. Between at least a part of the side wall ISa, and the auxiliary pattern 170 is further disposed between the conductive line 186 and the circuit area 114 of the substrate 110 .

FIG. 4 is a schematic top view of the auxiliary patterns 170 and conductors 186 of the stretchable pixel array substrate 10 according to an embodiment of the present invention.

Please refer to FIGS. 1 , 3 and 4 . In this embodiment, the vertical projected area of a part of the wire 186 on the pixel area 112 of the substrate 110 is less than or equal to the vertical projected area of a part of the auxiliary pattern 170 on the pixel area 112 of the substrate 110 . vertical projection plane on accumulation. In this embodiment, in the pixel area 112, except for the area where the wire 186 contacts the island element IS (ie, where the contact window 174 is located), the vertical projection of the wire 186 on the substrate 110 falls on the auxiliary pattern 170 on the substrate. Within the vertical projection on 110.

FIG. 5 shows the relationship between the thickness T170 of a part of the auxiliary pattern 170 provided on the upper surface ISb of the island-shaped element IS and the strain of the island-shaped element IS at the end of the wire 186 according to an embodiment of the present invention. Please refer to FIG. 3 and FIG. 5 . According to the data in FIG. 5 , in this embodiment, the Young’s modulus of the auxiliary pattern 170 is preferably less than 10 GPa, but the present invention is not limited thereto. It can be seen from the data in FIG. 5 that when the thickness T170 of the auxiliary pattern 170 on the island-shaped component IS increases, the stress at the end of the conductor 186 on the island-shaped component IS decreases. Considering the process capability and material characteristics, in this embodiment, the thickness T170 of the auxiliary pattern 170 is preferably less than 10 μm, but the present invention is not limited thereto.

Referring to FIG. 3 , the auxiliary pattern 170 has an extension length L170 on the upper surface ISb of the island element IS. FIG. 6 shows the relationship between the overall strain of the stretchable pixel array substrate 10 and the strain of the island element IS under various extension lengths L170 according to an embodiment of the present invention. Referring to FIGS. 3 and 6 , it can be seen from the data in FIG. 6 that the longer the extension length L170 of the auxiliary pattern 170 is, the smaller the strain of the island element IS is. When the overall strain of the stretchable pixel array substrate 10 increases, the island element IS will also be subject to greater strain. At this time, the extension length L170 of the auxiliary pattern 170 can be increased (or in other words, the wire 186 can be increased to extend into the island). length of the shaped element IS) to reduce the amount of strain.

The stretchable pixel array substrate of a comparative example not shown is the same as the present invention. The difference between the stretchable pixel array substrate 10 of the embodiment is that the stretchable pixel array substrate of the comparative example does not include the auxiliary pattern 170 . The stretchable pixel array substrate of the comparative example is subjected to a strain of 0.94% at the junction of the island element IS and the wire 186, which is close to the edge of damage, making the overall structure unable to withstand greater stretching. By adding the auxiliary pattern 170, the stretchable pixel array substrate 10 according to an embodiment of the present invention can reduce the strain at the interface between the island element IS and the wire 186 to 0.47%. Compared with the stretchable pixel array substrate of the comparative example, the stretchable pixel array substrate 10 according to an embodiment of the present invention has a reduction in strain of about 50% at the interface between the island element IS and the wire 186 .

It must be noted here that the following embodiments follow the component numbers and part of the content of the previous embodiments, where the same numbers are used to represent the same or similar elements, and descriptions of the same technical content are omitted. For descriptions of omitted parts, reference may be made to the foregoing embodiments and will not be repeated in the following embodiments.

FIG. 7 is a schematic diagram of the island element IS, the auxiliary pattern 170A and the light emitting diode element 230 of the stretchable pixel array substrate 10A according to another embodiment of the present invention.

The stretchable pixel array substrate 10A of FIG. 7 is similar to the aforementioned stretchable pixel array substrate 10. The difference between the two is that the auxiliary patterns 170A and 170 are different. Please refer to Figure 7. Specifically, in this embodiment, the upper surface ISb of the island-shaped component IS and the side wall ISa of the island-shaped component IS have a boundary i. The boundary i includes a plurality of sides i1 and is disposed on a plurality of sides. A plurality of corners i2 between i1, the auxiliary pattern 170A includes a plurality of auxiliary parts 170A-1 separated from each other, and the plurality of auxiliary parts 170A-1 are divided into Each spans the plurality of sides i1 of the interface i, and the plurality of corners i2 of the interface i are located between the plurality of auxiliary portions 170A-1.

FIG. 8 is a schematic diagram of the island element IS, the auxiliary pattern 170B and the light emitting diode element 230 of the stretchable pixel array substrate 10B according to another embodiment of the present invention. FIG. 9 is a schematic cross-sectional view of a stretchable pixel array substrate 10B according to another embodiment of the present invention. Figure 9 corresponds to the section line II-II' of Figure 8.

The stretchable pixel array substrate 10B of this embodiment is similar to the aforementioned stretchable pixel array substrate 10. The difference between the two is that the auxiliary patterns 170B and 170 are different. Please refer to Figures 8 and 9. Specifically, in this embodiment, the peripheral area ISb-2 of the upper surface ISb of the island-shaped element IS has a plurality of side sub-areas ISb-2a and is disposed on the plurality of side sub-areas ISb-2a. A plurality of corner sub-regions ISb-2b between the regions ISb-2a; the auxiliary pattern 170B covers the plurality of first portions ISa-1 and the island connected to the plurality of side sub-regions ISb-2a of the side wall ISa of the island-shaped element IS A plurality of side sub-areas ISb-2a on the upper surface ISb of the island-like element IS and a middle area ISb-1 on the upper surface ISb of the island-like element IS; the auxiliary pattern 170B has a plurality of notches 176, respectively overlapping the island-like element IS The plurality of corner sub-regions ISb-2b of the upper surface ISb and the side walls ISa of the island-shaped element IS are respectively connected to the plurality of second portions ISa-2 of the plurality of corner sub-regions ISb-2b.

FIG. 10 is a schematic diagram of the island element IS, the auxiliary pattern 170C and the light emitting diode element 230 of the stretchable pixel array substrate 10C according to yet another embodiment of the present invention. FIG. 11 is a schematic cross-sectional view of a stretchable pixel array substrate 10C according to yet another embodiment of the present invention. Figure 11 corresponds to the section line III-III' of Figure 10.

The stretchable pixel array substrate 10C of this embodiment is different from the aforementioned stretchable pixel array substrate 10C. The pixel array substrate 10 is similar. The difference between the two is that the auxiliary patterns 170 and 170C are different. Please refer to FIGS. 10 and 11 . Specifically, in this embodiment, except for the place where the auxiliary pattern 170C needs to allow the conductor 186 to pass through to connect with the island component IS (ie, the contact window 174 ), the auxiliary pattern 170C includes Cover the remaining area of the island element IS.

10: Stretchable pixel array substrate

110: Base

170: Auxiliary pattern

172:Open your mouth

186:Wire

IS: Island component

ISb: upper surface

I-I’: section line

Claims (8)

A stretchable pixel array substrate including: A substrate having a plurality of pixel areas and a line area, wherein the line area is located between the pixel areas and connected to the pixel areas; A plurality of island-shaped components are respectively disposed on the pixel areas of the substrate, wherein each island-shaped component includes a pixel driving circuit and has a side wall; An auxiliary pattern is provided on the circuit area of the substrate and extends to at least a part of one of the pixel areas, wherein the auxiliary pattern covers at least a part of the side wall of the island element and the island element at least a portion of an upper surface of the element facing away from the base; A conductor is provided on the auxiliary pattern and is electrically connected to a plurality of pixel driving circuits of the island-shaped components; and An insulating layer covering the conductor and the island component; Wherein, the auxiliary pattern has a contact window, the contact window of the auxiliary pattern overlaps at least a portion of the upper surface of the island-shaped component facing away from the substrate, and the conductor electrically passes through the contact window of the auxiliary pattern One of the pixel driving circuits connected to the island components. The stretchable pixel array substrate of claim 1, wherein the auxiliary pattern is disposed between the conductor and at least a portion of the upper surface of the island component, and the auxiliary pattern is disposed between the conductor and the island. between the at least part of the sidewall of the shaped component, and the auxiliary pattern is disposed between the conductor and the circuit area of the substrate. The stretchable pixel array substrate as claimed in claim 1, wherein the vertical projected area of a part of the conductor on the pixel area of the substrate is less than or equal to a part of the auxiliary pattern on the pixel area of the substrate vertically projected area. The stretchable pixel array substrate as claimed in claim 1, wherein the Young's modulus of the auxiliary pattern is less than 10 GPa. The stretchable pixel array substrate of claim 1, wherein a portion of the auxiliary pattern disposed on the upper surface of the island-shaped element has a thickness, and the thickness is less than 10 μm. The stretchable pixel array substrate of claim 1, wherein the upper surface of the island-shaped element includes a peripheral area and a middle area, and the peripheral area of the upper surface of the island-like element is connected to the island-like element Between the side wall of the component and the middle area of the upper surface of the island component, the auxiliary pattern covers the side wall of the island component and the peripheral area of the upper surface of the island component, and the auxiliary pattern There is an opening overlapping the middle area of the upper surface of the island element. The stretchable pixel array substrate of claim 1, wherein the upper surface of the island-shaped component and the side wall of the island-shaped component have a junction, and the boundary includes a plurality of sides and is disposed on the sides. A plurality of corners between sides; the auxiliary pattern includes a plurality of auxiliary parts separated from each other, the auxiliary parts respectively span the sides of the interface, and the corners of the interface are located in the auxiliary parts of the auxiliary pattern between. The stretchable pixel array substrate of claim 1, wherein the upper surface of the island-shaped element includes a peripheral area and a middle area, and the peripheral area of the upper surface of the island-like element is connected to the island-like element between the side wall of the component and the middle area of the upper surface of the island-shaped component, and the peripheral area of the upper surface of the island-shaped component has a plurality of side sub-areas and is disposed between the side sub-areas a plurality of corner sub-regions between; the auxiliary pattern covers a plurality of first portions of the side walls of the island-shaped component connected to the side sub-regions, and the side sub-regions of the upper surface of the island-shaped component and the middle area of the upper surface of the island-shaped component; the auxiliary pattern has a plurality of cut corners, respectively overlapping the corner sub-regions of the upper surface of the island-shaped component and the side walls of the island-shaped component respectively A plurality of second parts connected by the corner sub-areas.

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