TWI771051B - Display device - Google Patents

Abstract

A display device including: a substrate, a plurality of pixel islands, and a plurality of traces. The substrate is stretchable. A plurality of pixel islands are arranged above the substrate. A plurality of traces respectively connect two adjacent pixel islands of the plurality of pixel islands, and each of the traces extends along a first main direction through a turning angle and along a second main direction.

Description

display device

The present disclosure relates to stretchable display devices having traces that can withstand tensile strain.

With the development of display technology, various forms of display devices continue to appear. For example, curved display panels, bendable display panels, etc. are gradually applied in the fields of screens, electronic signage, wearable devices, Internet of Things devices, and artificial intelligence. Bring a new viewing and use experience.

With regard to the technological development of stretchable display devices, there has been a gradual move towards the use of stretchable traces with separate island-like electronic components. Therefore, when the display device is stretched by force, the main deformation amount can be concentrated in the wiring area, so that damage to the island-shaped electronic components that cannot be stretched can be avoided. However, the traces between the plurality of island-shaped electronic components are often subjected to relatively large stress, so that the traces are very likely to be broken when the display device is stretched or after being stretched.

Some embodiments of the present disclosure provide a display device including: a substrate, a plurality of pixel islands, and a plurality of wirings. The substrate is stretchable. A plurality of pixel islands are arranged above the substrate. A plurality of traces are respectively connected to two adjacent pixel islands among the plurality of pixel islands, and each trace of the traces is along a first main direction through a turning angle along a The second principal direction extends.

In some embodiments, in the display device, the turning angle is 70 degrees to 110 degrees before the substrate is subjected to tensile stress.

In some embodiments, in the display device, the angle of the turning angle after the substrate is subjected to tensile stress is 75 degrees to 175 degrees.

In some embodiments, in the display device, a plurality of traces extending from one side of one pixel island among the plurality of pixel islands are all connected to one side of another pixel island.

In some embodiments, in the display device, an angle of one side of each pixel island in the plurality of pixel islands relative to the to-be-stretched direction of the substrate is 30 degrees to 60 degrees.

In some embodiments, in the display device, an angle of a main extending direction of the traces relative to a to-be-stretched direction of the substrate is 35 degrees to 55 degrees.

In some embodiments, in the display device, the plurality of pixel islands include a first pixel island, a second pixel island, and a third pixel island, from one side of the first pixel island Some of the extended traces are connected to one side of the second pixel island, and other traces of the extended traces on this side of the first pixel island are connected to the third pixel island side of the object.

In some embodiments, in the display device, some of the plurality of traces extending from the other side of the first pixel island are connected to the other side of the second pixel island.

In some embodiments, in the display device, the first pixel island has a first side, a second side, a third side, and a fourth side, and the first side intersects the second side and Opposite to the third side, the second side intersects the third side and is opposite to the fourth side, the first side of the first pixel island is connected to a plurality of first traces, and the second side is connected to a plurality of a plurality of second traces, the third side is connected to a plurality of third traces, and the fourth side is connected to a plurality of fourth traces, the traces on the first side are respectively electrically coupled to the third traces The plurality of traces on the side, the plurality of traces on the second side are respectively electrically coupled to the plurality of traces on the fourth side.

In some embodiments, in the display device, the first pixel island has a plurality of first wires and a plurality of second wires, and the plurality of first wires on the first side respectively pass through the plurality of first wires Electrically coupled to the plurality of third traces on the third side, the plurality of second traces on the second side are respectively electrically coupled to the plurality of first traces on the fourth side via the plurality of second wires. Four lines.

In some embodiments, in the display device, the plurality of first conductive lines and the plurality of second conductive lines are located at different levels in the first pixel island.

In some embodiments, in the display device, the outermost trace of the plurality of first traces on the first side is electrically coupled to the innermost trace of the plurality of third traces on the third side traces, and the innermost trace of the plurality of first traces on the first side is electrically coupled to the outermost trace of the plurality of third traces on the third side.

In some embodiments, in the display device, the respective conductive paths from the plurality of first traces to the plurality of third traces are approximately equal in length. In some embodiments, the respective conductive paths from the second plurality of traces to the fourth plurality of traces are approximately equal in length.

The following will clearly illustrate the spirit of the present disclosure with drawings and detailed descriptions. Anyone with ordinary knowledge in the technical field, after understanding the preferred embodiments and examples of the present disclosure, can obtain the technology taught by the present disclosure. Changes and modifications may be made without departing from the spirit and scope of this disclosure.

The same reference numerals refer to the same elements throughout the specification. 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, "electrically connected" or "coupled" may refer to the existence of other elements between the two elements.

It will be understood that, although the terms "first," "second," "third," etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, and/or or parts shall not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, "a first element," "component," "region," "layer" or "section" discussed below could be termed a second element, component, region, layer or section without departing from the teachings herein.

The terminology used herein is for the purpose of describing particular embodiments only and is not limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms including "at least one" unless the content clearly dictates otherwise. "Or" means "and/or". As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. It will also be understood that, when used in this specification, the terms "comprising" and/or "comprising" designate the stated feature, region, integer, step, operation, presence of an element and/or part, but do not exclude one or more The presence or addition of other features, entireties of regions, steps, operations, elements, components, and/or combinations thereof.

As used herein, "about", "approximately", or "substantially" includes the stated value and the average value within an acceptable deviation of the particular value as determined by one of ordinary skill in the art, considering the measurement in question and the A specified amount of measurement-related error (ie, a limitation 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" may be used to select a more acceptable range of deviation or standard deviation depending on optical properties, etching properties or other properties, and not one standard deviation may 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 as having meanings consistent with their meanings in the context of the related art and the present invention, and are not to be construed as idealized or excessive Formal meaning, unless expressly defined as such herein.

Exemplary embodiments are described herein with reference to top schematic illustrations that are schematic illustrations of idealized embodiments. Thus, variations in the shapes of the illustrations as a result of, for example, manufacturing techniques and/or tolerances, are to be expected. Accordingly, the embodiments described herein should not be construed as limited to the particular shapes of regions as shown herein, but rather include deviations in shapes resulting from, for example, manufacturing. For example, regions illustrated or described as flat may typically have rough and/or nonlinear features. Additionally, the acute angles shown may be rounded. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the precise shape of a region and are not intended to limit the scope of the claims.

Referring to FIG. 1A, a schematic top view of a display device according to some embodiments is shown. The display device 100 includes a substrate 110 and a plurality of pixel islands 120 on the substrate 110 . Each pixel island 120 may include a plurality of sub-pixels 122 , 124 , and 126 . In some implementations, one of the plurality of subpixels 122, 124, and 126 may be a red subpixel, the other may be a green subpixel, and the other may be a blue subpixel.

Referring to FIG. 1B , which is a schematic diagram of the display device 100 after stretching, the size of each pixel island 120 is basically kept unchanged, and the distance between the plurality of pixel islands 120 is increased.

Referring to FIG. 2A , a partial top schematic view of a display device according to some embodiments is shown. The display device 200 includes a substrate 210 and a plurality of pixel islands 220 above the substrate 210 , and adjacent pixel islands 220 are connected to each other through a plurality of wires 230 .

The material of the substrate 210 is a material that makes the substrate 210 bendable and stretchable, such as thermoplastic polyurethanes (TPU), poly(dimethylsiloxane, PDMA), hexamethyl Disiloxane (Hexamethyldisilxane, HMDSO), or similar.

When the substrate 210 is stretched or compressed, the pixel islands 220 will not generate tensile strain or compressive strain. Each pixel island 220 may include one or more sub-pixels. The pixel islands 220 may also have thin film transistors and signal lines connected to the thin film transistors, such as scan signal lines, data signal lines, power signal lines, ground signal lines, or the like. In the pixel island 220, the sub-pixels used for display can be light emitting diode elements, such as organic light emitting diode elements, micro light emitting diode elements, or the like, or other suitable display elements can be used, For example, quantum dot light-emitting elements and the like.

The traces 230 may be or include: power traces (VDD, VSS), data traces, reference voltage traces (reference voltage), gate switch traces, pulse width modulation (Pulse Width Modulation, PWM) signal traces, AC signal traces, DC signal traces, or the like. The wiring 230 may be an electrical wire with a single-layer structure, a double-layer structure or a multi-layer structure. The traces 230 have elastic stretching properties and are not prone to breakage. The traces 230 enable signals between the adjacent plurality of pixel islands 220 to communicate with each other. It should be understood that the number of wires shown in the drawings of the embodiments herein is exemplary and is only used for illustration, and the number of wires may be more or less than those shown in the drawings. Number of.

Each of the traces 230 includes a corner 232 . In the conventional design of traces, between adjacent pixel islands, the main extension direction is a straight line; when subjected to tensile stress, the linear traces are deformed. However, the amount of deformation that the traces can withstand is limited. For example, if the traces are subjected to more than about 6% deformation, they may be easily broken, especially where the traces are connected to the pixel islands. In some embodiments of the present disclosure, through the design of the turning angle 232, when the wire is stretched, the bending angle can be increased, so the wire 230 can be rotated to share the strain on the wire.

The "turning angle" of a trace in this article refers to an angular turn along the main extension direction of the trace. In some embodiments, portions of the traces may be provided in a curved shape, such as a horseshoe shape, a wavy shape, a sawtooth shape, or the like, as shown in Figures 2B and 3B to 3E below.

Referring to FIG. 2B, a partial enlarged view of FIG. 2A is shown. FIG. 2B shows the first pixel island 220-1, the second pixel island 220-2, the third pixel island 220-3, and the fourth pixel island 220-4. The first pixel island 220-1 is adjacent to the second pixel island 220-2 in a first direction, and is adjacent to the third pixel island 220-3 in a second direction different from the first direction.

In the example embodiment of FIG. 2B, the pixel islands each have four sides. The first pixel island 220-1 has a first side 220-1A, a second side 220-1B, a third side 220-1C, and a fourth side 220-1D. The second pixel island 220-2 has a first side 220-2A, a second side 220-2B, a third side 220-2C, and a fourth side 220-2D. The third pixel island 220-3 has a first side 220-3A, a second side 220-3B, a third side 220-3C, and a fourth side 220-3D. The plurality of traces 230 extending from the first side 220-1A of the first pixel island 220-1 are all connected to the third side 220-2C of the second pixel island 220-2. The plurality of traces 230 extending from the second side 220-1B of the first pixel island 220-1 are all connected to the fourth side 220-3D of the third pixel island 220-3. In other words, a plurality of traces on one side of the first pixel island 220-1 are connected to one side of the second pixel island 220-2, and on the other side of the first pixel island 220-1 The traces on one side are all connected to one side of the third pixel island 220-3.

FIG. 3A is a partial top schematic view of a display device according to other embodiments. The display device 300 includes a substrate 310 and a plurality of pixel islands 320 above the substrate 310 , and adjacent pixel islands 320 are connected to each other through a plurality of wires 330 . Each of the plurality of traces 330 has a corner 332 near the middle of the trace.

Fig. 3B is a partial enlarged view of Fig. 3A. FIG. 3B shows the first pixel island 320-1, the second pixel island 320-2, the third pixel island 320-3, and the fourth pixel island 320-4. The first pixel island 320-1 is adjacent to the second pixel island 320-2 in a first direction, and is adjacent to the third pixel island 220-3 in a second direction different from the first direction. A plurality of traces 330 connecting the first pixel island 320-1 and the second pixel island 320-2, and a plurality of wires connecting the second pixel island 320-2 and the fourth pixel island 320-4 A wiring 330, a plurality of wirings 330 connecting the fourth pixel island 320-4 and the third pixel island 320-3, and connecting the third pixel island 320-3 and the first pixel island 320 A plurality of traces 330 of -1 are disposed in the regions between the plurality of pixel islands 320-1, 320-2, 320-3, and 320-4. Therefore, the embodiments shown in FIGS. 3B to 3E can better utilize the space between the plurality of pixel islands in the panel area.

In the example embodiment of Figure 3B, the pixel islands each have four sides. The first pixel island 320-1 has a first side 320-1A, a second side 320-1B, a third side 320-1C, and a fourth side 320-1D. The second pixel island 320-2 has a first side 320-2A, a second side 320-2B, a third side 320-2C, and a fourth side 320-2D. The third pixel island 320-3 has a first side 320-3A, a second side 320-3B, a third side 320-3C, and a fourth side 320-3D. A plurality of traces 330B1, 330B2, 330B3 extending from the first side 320-1A of the first pixel island 320-1 are connected to the second side 320-2B of the second pixel island 320-2. A plurality of traces 330A1, 330A2, 330A3 extending from the first side 320-1A of the first pixel island 320-1 are connected to the fourth side 320-3D of the third pixel island 320-3. In other words, from the plurality of traces on the first side 320-1A of the first pixel island 320-1, some traces extend to the second pixel island 320-2, and some traces extend to the second pixel island 320-2. Three pixel island 320-3.

FIG. 3C and FIG. 3D illustrate the coupling manner between the traces at different sides of the pixel island and the wires inside the pixel island. For the sake of clarity and description, only some of the inner wires in the first pixel island 320-1 coupled with the traces are shown, and other inner wires are not shown. Fig. 3C is a partial enlarged view of Fig. 3A. The first side 320-1A, the second side 320-1B, the third side 320-1C, and the fourth side 320-1D of the first pixel island 320-1 have wirings 330A1, 330A2, 330A3, 330B1, 330B2, and 330B3. The traces 330A1, 330A2, and 330A3 are connected to an adjacent pixel island, and the traces 330B1, 330B2, and 330B3 are connected to another adjacent pixel island.

For the sake of illustration, the wiring 330 connecting the first side 320-1A is called the first wiring, the wiring connecting the second side 320-1B is called the second wiring, and the wiring connecting the third side 320- The trace of 1C is called the third trace, and the trace connecting the fourth side 320-1D is called the fourth trace.

The first pixel island 320-1 has a plurality of wires inside to couple wires on different sides. As shown in Figure 3C, the first traces 330B1, 330B2, and 330B3 on the first side 320-1A are coupled to the wires on the third side 320-1C via wires 340A, 340B, and 340C, respectively. The third traces 330B3, 330B2, and 330B1. Second traces 330A1, 330A2, 330A3 at second side 320-1B are coupled to fourth traces 330A3, 330A2, and 330A1 at fourth side 320-1D via wires 342C, 342B, and 342A, respectively . In the first pixel island 320-1, the wires 340A, 340B, and 340C and the wires 342A, 342B, and 342C are separated and not connected to each other. For example, the wires 340A, 340B, and 340C are located in the first pixel island. The conductive lines 342A, 342B, and 342C are located at another level of the first pixel island 320-1.

Fig. 3D is a partial enlarged view of Fig. 3C. In more detail, the inner wires 340A, 340B, and 340C of the first pixel island 320-1 are arranged on the first side 320-1A such that the wire 340A is located on the outside, and the wire 340C is located on the inner side; the inner wires 340A, 340B , and 340C are arranged on the third side 320-1C in such a way that the conducting wire 340A is located on the inner side, and the conducting wire 340C is located on the outer side. Similarly, the inner wires 342A, 342B, and 342C of the first pixel island 320-1 are arranged on the second side 320-1B in such a manner that the wire 342C is located on the outer side, and the wire 342A is located on the inner side; the inner wires 342A, 342B, and The arrangement of the 342C on the fourth side 320-1D is such that the conducting wire 342C is located on the inner side and the conducting wire 342A is located on the outer side.

In the first pixel island 320-1, the first wiring 330-B1 on the outer side of the first side 320-1A is coupled to the third wiring on the inner side of the third side 320-1C via the wire 340A 330-B3. The first wiring 330-A3 on the inner side of the first side 320-1A is coupled to the third wiring 330-B1 on the outer side of the third side 320-1C via the wire 340C. Similarly, the second trace 330-A1 on the outer side of the second side 320-1B is coupled to the fourth trace 330-A3 on the inner side of the fourth side 320-1D via the wire 342C. The second trace 330-A3 on the inner side of the second side 320-1B is coupled to the fourth trace 330-A1 on the outer side of the fourth side 320-1D via the wire 342A.

As shown in FIG. 3C , among the six traces on the same side, the traces located on the two outer sides have the shortest lengths, and the two traces located at the innermost side have the longest lengths. Coupling the traces at the outside of one side with the inside traces of the other side, and the traces at the inside of this side with the outside traces of this other side enables different wire paths The lengths of the conductors are the same, so the resistances of these different conductive paths can be made the same.

Fig. 3E is a partial enlarged view of Fig. 3A. The arrows on both sides indicate the direction to be stretched along the uniaxial, and the solid single arrow indicates the first main direction and the second main direction in which the trace extends. Each trace 330 extends along the second main direction via a turning angle along the first main direction. In some embodiments, for example, when the display device is a dynamic stretchable panel, before stretching, the angle between the direction to be stretched and one side of the pixel island may be 30 degrees to 60 degrees, for example, about 45 degrees, as shown in FIG. 3E; alternatively, the angle of one of the main extending directions of the traces 330 to the stretching direction may be 35 degrees to 55 degrees, eg, about 45 degrees, as shown in FIG. 3E shown in. In some embodiments, after stretching, the included angle between the stretching direction of the substrate and one side of the pixel island can be 20 degrees to 70 degrees; one of the main extending directions of the traces is relative to the stretching direction. The angle of the orientation is 2.5 to 52.5 degrees.

FIG. 4 is a partial cross-sectional view of a display device according to some embodiments. It should be understood that FIG. 4 is an example, and the display device of the present disclosure is not limited thereto. FIG. 4 shows parts of the pixel island region IR and the bridge region BR of the display device 400 .

As shown in FIG. 4 , the bridge region BR includes a substrate 410 , an insulating layer 422 over the substrate, a conductive material M2 over the insulating layer, and an encapsulation layer 470 . The encapsulation layer 470 covers the substrate 410, the insulating layer 422, and the conductive material M2.

The pixel island region IR and the bridge region BR are separated by a string of empty regions VR. In the pixel island region IR, an optional plurality of insulating layers 422 , 424 , 426 , and 428 are formed over the substrate 410 . In some embodiments, the insulating layers 422, 424, 426, and 428 may be made of silicon oxide or silicon nitride.

The active element 430 is disposed above the insulating layer 428 , and source/drain regions 432 and source/drain 434 are disposed on both sides of the active element 430 . Gate insulating layers 450 and 452 are disposed over the active element 430 . Insulating layers 454 and 456 are disposed over gate insulating layers 450 and 452 . An interlayer dielectric layer 458 is disposed over the insulating layer 456 . An encapsulation layer 470 is disposed over the interlayer dielectric layer 458 .

The conductive pattern M1 may be disposed between the gate insulating layers 450 and 452 , and the conductive pattern M1.5 may be disposed between the gate insulating layer 452 and the insulating layer 454 . Conductive connection patterns 460, 462, and 464 include portions through gate insulating layers 450 and 452, or insulating layers 454 and 456, to provide electrical connections at different levels.

The conductive materials M2A and M2B in the pixel island region IR include vertical portions through gate insulating layers 450 and 452, or insulating layers 454 and 456 to provide electrical connections at different levels. The conductive material M2 in the bridge region BR is electrically coupled with the conductive materials M2A and M2B in the pixel island region IR. That is to say, the conductive material M2 in the bridge region BR is formed as the wiring 330, and the conductive materials M2A and M2B in the pixel island region IR are formed as inner wires ( For example, wires 340A, 340B, 340C, 342A, 342B, or 342C shown in Figures 3C and 3D). As shown in FIG. 4 , the horizontally extending portion of the conductive material M2A and the horizontally extending portion of the conductive material M2B are located at different levels in the pixel island region IR, respectively.

The electrode 480 is disposed over the encapsulation layer 470 , and the electrode 480 is electrically connected to the conductive connection pattern 464 . A light emitting element 482 is provided above the electrode 480 . The light emitting element 482 can be, for example, an organic light emitting diode, a micro light emitting diode, or the like.

FIG. 5 is a stress distribution diagram of a display device after stretching according to an embodiment. In the area of the pixel islands, the tensile strain is close to 0, while at the traces, the tensile strain is about 3%. In contrast, in a comparative example, using a conventional routing design, that is, the routing does not include a turning portion, the strain of the routing is about 6.6%. As a result, a trace with a kink reduces the amount of strain by 55% compared to a trace without a kink.

In some embodiments, in the display device, the turning angle of the traces is 70 degrees to 110 degrees before the stretchable substrate is subjected to tensile stress. In some embodiments, in the display device, the angle at the turning angle after the stretchable substrate is subjected to tensile stress is 75 degrees to 175 degrees.

The display device of the present disclosure can be applied to an iteratively stretched display device, as shown in FIGS. 1A and 1B , or can be applied to a fixed curved display device. As shown in Figures 6A and 6B. FIG. 6A shows a convex display device. By attaching to a convex mold 620 , the display device 610 is shaped into a convex shape. Therefore, the substrate and traces in local areas will have tensile and compressive deformations. . FIG. 6B shows a concave display device 612 . By attaching to a concave mold 622 , the display device 612 is shaped into a concave shape. Therefore, the substrate and traces in a local area will have tensile and compressive deformations. .

Compared with the prior art, in the display devices of various embodiments of the present disclosure, through the design of the turning angles of the traces, the tensile stress bearing capacity of the traces is improved, so that when the display device is stretched or bent, the pixels are connected. The metal traces of the island are not easily broken, thereby improving the reliability of the display device when stretched or bent.

Although the present disclosure has been disclosed above in various embodiments and examples, it is not intended to limit the present disclosure. Anyone skilled in the art can make various changes without departing from the spirit and scope of the present disclosure. Therefore, the protection scope of the present disclosure should be determined by the scope of the appended patent application.

100: Display device

110: Substrate

120: Pixel Island

122: Subpixel

124: subpixel

126: Subpixel

200: Display device

210: Substrate 220: Pixel Island 220-1: First pixel island 220-1A: First side 220-1B: Second Side 220-1C: Third Side 220-1D: Fourth side 220-2: Second Pixel Island 220-2A: First side 220-2B: Second Side 220-2C: Third Side 220-2D: Fourth side 220-3: Third Pixel Island 220-3A: First side 220-3B: Second Side 220-3C: Third Side 220-3D: Fourth Side 220-4: Fourth Pixel Island 230: line 232: Turning Angle 300: Display device 310: Substrate 320: Pixel Island 320-1: First pixel island 320-1A: First side 320-1B: Second side 320-1C: Third Side 320-1D: Fourth side 320-2: Second Pixel Island 320-2A: First side 320-2B: Second side 320-2C: Third side 320-2D: Fourth side 320-3: Third Pixel Island 320-3A: First side 320-3B: Second side 320-3C: Third side 320-3D: Fourth Side 320-4: Fourth Pixel Island 330: Route 330A1: Routing 330A2: Routing 330A3: Routing 330B1: Routing 330B2: Routing 330B3: Routing 332: Turning Angle 340A: Wire 340B: Wire 340C: Wire 342A: Wire 342B: Wire 342C: Wire 400: Display device 410: Substrate 422: Insulation layer 424: Insulation layer 426: Insulation layer 428: Insulation layer 430: Active Components 432: source/drain area 434: source/drain 450: gate insulating layer 452: gate insulating layer 454: Insulation layer 456: Insulation layer 458: Interlayer Dielectric Layer 460: Conductive connection pattern 462: Conductive connection pattern 464: Conductive connection pattern 470: encapsulation layer 480: Electrodes 482: Light-emitting element 610: Display device 612: Display device 620: Mould 622: Mould BR: bridge region IR: pixel island M1: Conductive Pattern M1.5: Conductive Pattern M2: Conductive material M2A: Conductive material M2B: Conductive material VR: Void area

In order to make the above and other objects, features, advantages and embodiments of the present disclosure more clearly understood, the accompanying drawings are described as follows: FIG. 1A is a schematic top view of a display device according to some embodiments. Fig. 1B is a plan view of the display device of Fig. 1A after being stretched. FIG. 2A is a top view of a partial area of a display device according to some embodiments. Fig. 2B is a partial enlarged view of Fig. 2A. FIG. 3A is a top view of a partial area of a display device according to some embodiments. Fig. 3B is a partial enlarged view of Fig. 3A. Fig. 3C is a partial enlarged view of Fig. 3A. Fig. 3D is a partial enlarged view of Fig. 3C. Fig. 3E is a partial enlarged view of Fig. 3A. FIG. 4 is a cross-sectional view of a display device according to some embodiments. FIG. 5 is a stress-tensile deformation distribution diagram of a display device according to an embodiment. FIG. 6A is a schematic diagram of a curved substrate according to some embodiments. FIG. 6B is a schematic diagram of a curved substrate according to some embodiments.

Domestic storage information (please note in the order of storage institution, date and number) none Foreign deposit information (please note in the order of deposit country, institution, date and number) none

300: Display device

320-1: First pixel island

320-1A: First side

320-1B: Second side

320-1C: Third Side

320-1D: Fourth side

320-2: Second Pixel Island

320-2A: First side

320-2B: Second side

320-2C: Third side

320-2D: Fourth side

320-3: Third Pixel Island

320-3A: First side

320-3B: Second side

320-3C: Third side

320-3D: Fourth Side

320-4: Fourth Pixel Island

330: Route

332: Turning Angle

Claims (11)

A display device, comprising: a substrate, which is stretchable; a plurality of pixel islands disposed above the substrate; and a plurality of wirings respectively connecting two of the pixel islands Adjacent pixel islands, each of the wirings extends along a first main direction through a turning angle along a second main direction; wherein the plurality of pixel islands include a first main direction a pixel island, a second pixel island, and a third pixel island to which some of the plurality of traces extending from one side of the first pixel island are connected to the second pixel island one side of the first pixel island, and other of the traces extending from the side of the first pixel island are connected to one side of the third pixel island. The display device according to claim 1, wherein the angle of the turning angle before the substrate is subjected to tensile stress is 70 degrees to 110 degrees. The display device according to claim 1, wherein the angle of the turning angle after the substrate is subjected to tensile stress is 75 degrees to 175 degrees. The display device according to claim 1, wherein an angle of a side of each pixel island in the pixel islands relative to a to-be-stretched direction of the substrate is 30 degrees to 60 degrees. The display device as claimed in claim 1, wherein the wirings An angle of a main extension direction of the substrate relative to a to-be-stretched direction of the substrate is 35 degrees to 55 degrees. The display device of claim 1, wherein some of the wires extending from the other side of the first pixel island are connected to the other side of the second pixel island. The display device of claim 1, wherein the first pixel island has a first side, a second side, a third side, and a fourth side, and the first side intersects the first side. Two sides are opposite to the third side, the second side intersects the third side and is opposite to the fourth side, the first side of the first pixel island is connected to a plurality of A wiring, the second side is connected to a plurality of second wirings, the third side is connected to a plurality of third wirings, and the fourth side is connected to a plurality of fourth wirings, on the first side The first traces are respectively electrically coupled to the third traces on the third side, and the second traces on the second side are respectively electrically coupled to the fourth trace These fourth traces on the side. The display device of claim 7, wherein the first pixel island has a plurality of first wires and a plurality of second wires, and the first wires on the first side pass through the first wires respectively The first wires are electrically coupled to the third wires on the third side, and the second wires on the second side are electrically coupled to the fourth wires via the second wires, respectively These fourth traces on the side. The display device of claim 8, wherein the first wires and the second wires are located at different levels in the first pixel island. The display device of claim 7, wherein an outermost trace of the first traces on the first side is electrically coupled to the third traces on the third side The innermost trace, and the innermost trace of the first traces on the first side is electrically coupled to the outermost trace of the third traces on the third side. The display device of claim 7, wherein the conductive paths from the first traces to the third traces are approximately equal in length.

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