Display device and display structure

Abstract

The invention relates to a display device and a display structure. A display device includes: first and second substrates facing each other and spaced apart from each other; a plurality of third substrates on an inner surface of the first substrate; a plurality of vertical lines located between two adjacent ones of the plurality of third substrates along the first direction; a plurality of horizontal lines located between two adjacent ones of the plurality of third substrates in a second direction crossing the first direction; a plurality of vertical connecting lines connecting a first side of one of the plurality of third substrates and the plurality of vertical lines; a plurality of horizontal connecting lines connecting a second side adjacent to the first side of the one of the plurality of third substrates and the plurality of horizontal lines; and a plurality of light emitting diodes respectively located on the plurality of third substrates.

Description

Technical Field

[0001] The present disclosure relates to a display device, and more particularly, to a stretchable display device in which the stretching rate is improved by connecting connection lines to both sides of a rigid portion. Background Art

[0002] Recently, with the advent of an information-oriented society, the interest in information displays for processing and displaying a large amount of information and the demand for portable information media have increased. Accordingly, the display field has been rapidly developed. Thus, various light and thin flat display devices have been developed and highlighted.

[0003] With the progress of display-related technologies, flexible display devices that change their shapes by folding, bending, or winding have been studied and developed. Specifically, a stretchable display device in which display elements and wires are disposed on a substrate of a flexible material such as plastic has become a subject as a next-generation display device. The stretchable display device can be stretched in a predetermined direction to be changed into various shapes.

[0004] The stretchable display device includes a rigid portion provided with pixels and a flexible portion provided with connection lines connecting the pixels. Since the rigid portion is not stretched, a strain higher than the stretching rate of the entire display panel can be applied to the flexible portion.

[0005] In addition, since it is necessary to reduce the area of the flexible portion and increase the area of the rigid portion for a relatively high resolution, the strain applied to the flexible portion is further increased. Summary of the Invention

[0006] Accordingly, the present disclosure relates to a stretchable display device that substantially eliminates one or more problems caused by the limitations and disadvantages of the related art.

[0007] An object of the present disclosure is to provide a stretchable display device in which the strain applied to a flexible portion is reduced by providing horizontal lines and vertical lines between adjacent rigid portions and connecting the horizontal lines and the vertical lines to both sides of the rigid portions.

[0008] Another object of the present disclosure is to provide a stretchable display device in which the strain applied to the flexible portion is reduced, the area of the rigid portion is increased, and adjacent light-emitting diodes have a uniform distance by dividing adjacent rigid portions into rigid portion groups, providing horizontal lines and vertical lines between the adjacent rigid portions, connecting the horizontal lines and the vertical lines to both sides of the rigid portions, and disposing light-emitting diodes at corners of the rigid portion groups.

[0009] Additional features and advantages of the present disclosure will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present disclosure. These and other advantages of the present disclosure will be realized and attained by the structure particularly pointed out in the written description and claims of the present disclosure as well as the appended drawings.

[0010] To achieve these and other advantages and in accordance with the purpose of the present disclosure, as embodied and broadly described herein, a display device includes: a first substrate and a second substrate, the first substrate and the second substrate facing each other and spaced apart from each other; a plurality of third substrates on an inner surface of the first substrate, the plurality of third substrates spaced apart from each other; a plurality of vertical lines located between two adjacent ones of the plurality of third substrates along a first direction; a plurality of horizontal lines located between two adjacent ones of the plurality of third substrates along a second direction intersecting the first direction; a plurality of vertical connection lines connecting a first side of one of the plurality of third substrates and the plurality of vertical lines; a plurality of horizontal connection lines connecting a second side of one of the plurality of third substrates adjacent to the first side and the plurality of horizontal lines; and a plurality of light emitting diodes respectively located on the plurality of third substrates.

[0011] It should be understood that the foregoing general description and the following detailed description are both illustrative and intended to provide further explanation of the claimed present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings, which are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. In the drawings:

[0013] Figure 1 is a perspective view showing a stretchable display device according to a first embodiment of the present disclosure;

[0014] Figure 2 is a plan view showing a display panel of the stretchable display device according to a first embodiment of the present disclosure;

[0015] Figure 3 is a circuit diagram showing a sub-pixel of the display panel of the stretchable display device according to a first embodiment of the present disclosure;

[0016] Figure 4 is a cross-sectional view taken along line IV-IV of Figure 2 ;

[0017] Figure 5 is a cross-sectional view taken along line V-V of Figure 2 ;

[0018] Figure 6A and Figure 6B are respectively cross-sectional views showing a cross-section of a display panel of a stretchable display device according to a second embodiment of the present disclosure; and

[0019] Figure 7 is a plan view showing a display panel of a stretchable display device according to a third embodiment of the present disclosure. Detailed Description

[0020] The advantages, features, and methods for implementing the present disclosure will be clarified by the following example embodiments described with reference to the accompanying drawings. However, the present disclosure may be embodied in different forms and should not be construed as limited to the example embodiments set forth herein. Instead, these example embodiments are provided so that the present disclosure may be thorough and complete, and may fully convey the scope of the present disclosure to those skilled in the art. Further, the present disclosure is only defined by the scope of the claims.

[0021] The shapes, sizes, ratios, angles, numbers, etc. illustrated in the drawings to describe various example embodiments of the present disclosure are given only by way of example. Therefore, the present disclosure is not limited to the illustrations in the drawings. Unless otherwise specified, the same reference numerals refer to the same elements throughout the specification.

[0022] In the following description, in cases where a detailed description of related known functions or configurations may unnecessarily obscure the features or aspects of the present disclosure, the detailed description of such known functions or configurations may be omitted or a brief description may be provided.

[0023] When using terms such as "comprising", "having", "including", etc., one or more other elements may be added unless a term such as "only" is used. Elements described in the singular form are intended to include a plurality of elements unless the context clearly indicates otherwise, and vice versa.

[0024] When constructing elements, the elements should be interpreted as including an error or tolerance range even if no explicit description of such error or tolerance range is provided.

[0025] When describing positional relationships, for example, when using terms such as "on", "above", "under", "over", "below", "next to", "adjacent to", etc. to describe the positional relationship between two components, one or more other components may be located between the two components unless more restrictive terms (such as "immediately", "directly", or "closely") are used. For example, when an element or layer is disposed "on" another element or layer, a third layer or element may be interposed therebetween.

[0026] Although terms such as "first", "second", A, B, (a), (b), etc. may be used herein to refer to various elements, these elements should not be construed as limited by these terms, as they are not used to define a specific order or precedence. These terms are only used to distinguish one element from another. For example, without departing from the scope of the present disclosure, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0027] The term "at least one" should be understood to include all combinations of one or more of the related elements. For example, the phrase "at least one of the first element, the second element, and the third element" may include all combinations of two or more of the first element, the second element, and the third element, as well as the first element, the second element, or the third element.

[0028] The term "display device" may include, in a narrow sense, a display device including a display panel and a driving unit for driving the display panel (e.g., a liquid crystal module (LCM), an organic light emitting diode (OLED) module, and a quantum dot (QD) module). Additionally, the term "display device" may include a complete product (or end product) having an LCM, an OLED module, and a QD module (e.g., a notebook computer, a television, a computer monitor, an electronic device set or kit (or complete equipment) including an in-vehicle display device or a display device of a shape other than a vehicle, and a mobile electronic device such as a smart phone or an electronic tablet).

[0029] Accordingly, the display device of the present disclosure may include an application product or kit of an end-user device having an LCM module, an OLED module, and a QD module, as well as a display device such as an LCM module, an OLED module, and a QD module in a narrow sense.

[0030] Depending on the situation, an LCM module, an OLED module, and a QD module having a display panel and a driving unit may be expressed as a "display device", and an electronic device including a complete product having an LCM module, an OLED module, and a QD module may be expressed as a "kit". For example, a display device in a narrow sense may include a liquid crystal display panel, an organic light emitting diode, and a quantum dot and a source printed circuit board (PCB) for driving the display panel, and a kit may further include a kit PCB electrically connected to the source PCB for controlling the entire kit.

[0031] The display panel of the present disclosure may include all types of display panels such as liquid crystal display panels, organic light emitting diode display panels, quantum dot display panels, and electroluminescent display panels. The display panel of the present disclosure is not limited to a specific display panel having a flexible substrate for an organic light emitting diode display panel and a lower backplane support member bent at the border. The shape or size of the display panel of the display device of the present disclosure is not limited thereto.

[0032] For example, when the display panel is an organic light emitting diode display panel, the display panel may include a plurality of gate lines, a plurality of data lines, and sub-pixels located in the intersection regions of the plurality of gate lines and the plurality of data lines. The display panel may include an array of thin film transistors having elements for selectively applying a voltage to each sub-pixel, a light emitting element layer on the array, and a package substrate or a package portion covering the light emitting element layer. The package portion may protect the thin film transistors and the light emitting element layer from external influences, and may prevent or at least reduce moisture or oxygen from penetrating into the light emitting element layer. Additionally, the layer on the array may include an inorganic light emitting layer, such as a nano-sized material layer or a quantum dot.

[0033] The thin film transistor of the present disclosure may include one of an oxide thin film transistor, an amorphous silicon thin film transistor, and a low temperature polycrystalline silicon thin film transistor.

[0034] The features of various embodiments of the present disclosure may be partially or completely coupled to or combined with each other. As can be fully understood by those skilled in the art, they may be technically linked and operated in various ways. The embodiments may be executed independently of each other or in association with each other in various combinations.

[0035] Hereinafter, a display device according to various exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, in which the influence on the oxide semiconductor layer of the thin film transistor of the driving element portion is reduced by shielding the light emitted and transmitted from the sub-pixels and / or the light input from the outside.

[0036] Figure 1 is a perspective view showing a stretchable display device according to a first embodiment of the present disclosure. The stretchable display device may be an organic light emitting display (OLED) device.

[0037] In Figure 1 , a stretchable display device 110 according to a first embodiment of the present disclosure includes a display panel 120, a flexible printed circuit (FPC) 170, and a printed circuit board (PCB) 176.

[0038] The display panel 120 may be stretched along a first direction X and / or a second direction Y. The first direction X and the second direction Y intersect each other to form a plane of the stretchable display device 110.

[0039] The display panel 120 includes a first (or base) substrate 122 and a second (or cover) substrate 166 that face each other and are spaced apart from each other in a third direction Z, and a plurality of third substrates (or cell substrates) 124 located on the inner surface of the first substrate (or base substrate) 122 facing the second substrate 166 along the third direction Z. The first substrate 122 and the second substrate 166 may include a flexible material having bendable and stretchable properties, and the plurality of third substrates 124 may include a rigid material.

[0040] In some embodiments, the display panel 120 includes only the first (base) substrate 122 and the third (cell) substrate 124, and does not include the second (top) substrate 166. Instead, a transparent encapsulation material or layer may be formed above the third (cell) substrate 124.

[0041] The plurality of third substrates 124 may be spaced apart from each other in the X-Y plane, for example, to each have an island shape.

[0042] The first substrate 122 includes a display area DA for displaying an image and a non-display area NDA adjacent to the display area DA to surround the display area DA.

[0043] The display area DA includes a plurality of pixels, each pixel including ( Figure 2 a) a plurality of sub-pixels SP1 to SP3, and the plurality of pixels may respectively correspond to the plurality of third substrates 124.

[0044] Each of the plurality of sub-pixels SP1 to SP3 includes a light-emitting diode, and a plurality of voltage lines such as gate lines, data lines, high-level lines, and low-level lines may be connected to each of the plurality of sub-pixels SP1 to SP3.

[0045] The non-display area NDA does not display an image. A plurality of link lines extending from the plurality of voltage lines provided in the display area DA and a plurality of pads connected to the ends of the plurality of link lines may be provided in the non-display area NDA.

[0046] The display area DA and the non-display area NDA may be divided into a rigid portion and a flexible portion. The rigid portion corresponds to the plurality of third substrates 124 and is non-stretchable, and the flexible portion corresponds to the first substrate 122 other than the plurality of third substrates 124 and is stretchable.

[0047] The flexible printed circuit 170 may include a base film 172 of a flexible material, a driving integrated circuit (IC) 174 mounted on the base film 172, and a plurality of wires connected to the driving integrated circuit 174. The driving integrated circuit 174 generates a gate signal and a data signal for displaying an image and sends the gate signal and the data signal to the display panel 120. The plurality of wires send a plurality of signals.

[0048] Although in Figure 1 the embodiment of

[0049] the flexible printed circuit 170 has a chip - on - film (COF) type, in another embodiment, the flexible printed circuit 170 may have a chip - on - glass (COG) type or a tape - carrier package (TCP) type.

[0050] In the stretchable display device 110, by connecting a plurality of connection lines only to two sides out of four sides of each of the plurality of third substrates 124, the strain applied to the soft part can be reduced.

[0051] Figure 2 is a plan view of a display panel of a stretchable display device according to a first embodiment of the present disclosure, and Figure 3 is a circuit diagram of a sub - pixel of a display panel of a stretchable display device according to a first embodiment of the present disclosure.

[0052] In Figure 2 the display panel 120 of the stretchable display device 110 according to the first embodiment of the present disclosure includes a plurality of third substrates 124, a plurality of vertical lines VL (including the shown VL1, VL2, and VL3) disposed between two adjacent ones of the plurality of third substrates 124 along a first direction X, a plurality of horizontal lines HL1, HL2, and HL3 disposed between two adjacent ones of the plurality of third substrates 124 along a second direction Y intersecting the first direction X, a plurality of vertical connection lines 156 each connecting a third substrate 124 among the plurality of third substrates 124 and a vertical line VL among the plurality of vertical lines VL (VL1, VL2, and VL3), and a plurality of horizontal connection lines 158 each connecting a third substrate among the plurality of third substrates 124 and a horizontal line HL among the plurality of horizontal lines HL (HL1, HL2, and HL3).

[0053] Each of the plurality of third substrates 124 includes a first sub - pixel SP1, a second sub - pixel SP2, and a third sub - pixel SP3 that constitute a pixel, and each of the first sub - pixel SP1, the second sub - pixel SP2, and the third sub - pixel SP3 includes a light - emitting diode Del.

[0054] In some implementations, although other shapes are also possible for the third substrate 124 and are included within the scope of the present disclosure, each of the plurality of third substrates 124 may have a quadrilateral shape.

[0055] In Figure 3 , each of a first sub-pixel SP1, a second sub-pixel SP2, and a third sub-pixel SP3 includes a switching transistor Tsw, a driving transistor Tdr, a storage capacitor Cst, and a light-emitting diode Del, and each of the switching transistor Tsw and the driving transistor Tdr may have a positive (P) type.

[0056] A gate electrode of the switching transistor Tsw is connected to a gate voltage Vsc, a source electrode of the switching transistor Tsw is connected to a data voltage Vda, and a drain electrode of the switching transistor Tsw is connected to a gate electrode of the driving transistor Tdr and a first capacitor electrode of the storage capacitor Cst.

[0057] The gate electrode of the driving transistor Tdr is connected to the drain electrode of the switching transistor Tsw and the first capacitor electrode of the storage capacitor Cst, a source electrode of the driving transistor Tdr is connected to a second capacitor electrode of the storage capacitor Cst and a high-level voltage Vdd, and a drain electrode of the driving transistor Tdr is connected to a first electrode (anode) of the light-emitting diode Del.

[0058] The first electrode of the light-emitting diode Del is connected to the drain electrode of the driving transistor Tdr, and a second electrode (cathode) of the light-emitting diode Del is connected to a low-level voltage Vss.

[0059] In each of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3, when the switching transistor Tsw is turned on according to the gate voltage Vsc, the data voltage Vda is applied to the gate electrode of the driving transistor Tdr. When the driving transistor Tdr is turned on according to the data voltage Vda, due to the high-level voltage Vdd and the low-level voltage Vss, a current corresponding to the data voltage Vda is supplied to the light-emitting diode Del, and the light-emitting diode Del emits light corresponding to the data voltage Vda. The storage capacitor Cst stores the data voltage Vda to maintain the voltage of the gate electrode of the driving transistor Tdr within one frame.

[0060] Although in Figure 3 the first embodiment of

[0061] In Figure 2Among them, multiple vertical lines VL1, VL2, and VL3 are spaced apart from each other and are each arranged along the second direction Y and are configured to send multiple pixel driving voltages for driving light-emitting diodes Del in one or more third substrates 124 arranged along the second direction Y, and multiple horizontal lines HL1, HL2, and HL3 are spaced apart from each other and are each arranged along the first direction X and are configured to send multiple pixel driving voltages for driving light-emitting diodes Del in one or more third substrates 124.

[0062] For example, the multiple vertical lines may include a first vertical line VL1, a second vertical line VL2, and a third vertical line VL3, and the first vertical line VL1, the second vertical line VL2, and the third vertical line VL3 may respectively send a red data voltage Vda, a green data voltage Vda, and a blue data voltage Vda. The multiple horizontal lines may include a first horizontal line HL1, a second horizontal line HL2, and a third horizontal line HL3, and the first horizontal line HL1, the second horizontal line HL2, and the third horizontal line HL3 may respectively send a strobe voltage Vsc, a high-level voltage Vdd, and a low-level voltage Vss.

[0063] In another embodiment, the multiple vertical lines may include a first vertical line, a second vertical line, a third vertical line, and a fourth vertical line, and the first vertical line, the second vertical line, the third vertical line, and the fourth vertical line may respectively send a red data voltage, a green data voltage, a blue data voltage, and a reference voltage. The multiple horizontal lines may include a first horizontal line, a second horizontal line, a third horizontal line, and a fourth horizontal line, and the first horizontal line, the second horizontal line, the third horizontal line, and the fourth horizontal line may respectively send a strobe voltage, a high-level voltage, a low-level voltage, and a light-emitting voltage.

[0064] Each of the multiple vertical lines VL1, VL2, and VL3 and the multiple horizontal lines HL1, HL2, and HL3 may have a waveform shape, a diamond shape, or a zigzag shape.

[0065] Each of the multiple vertical connection lines 156 may be connected between the same first side (for example, the right side of each of the multiple third substrates 124 among the multiple third substrates 124) and a vertical line VL among the multiple vertical lines VL1, VL2, and VL3 along the first direction X to send the multiple pixel driving voltages of the multiple vertical lines VL1, VL2, and VL3 to each of the multiple third substrates 124.

[0066] For example, a plurality of vertical connection lines 156 may include a first vertical connection line 156-1, a second vertical connection line 156-2, and a third vertical connection line 156-3. The first vertical connection line 156-1 may be connected to a first vertical line VL1 and a first sub-pixel SP1 to transmit a red data voltage Vda of the first vertical line VL1 to the first sub-pixel SP1. The second vertical connection line 156-2 may be connected to a second vertical line VL2 and a second sub-pixel SP2 to transmit a green data voltage Vda of the second vertical line VL2 to the second sub-pixel SP2. And the third vertical connection line 156-3 may be connected to a third vertical line VL3 and a third sub-pixel SP3 to transmit a blue data voltage Vda of the third vertical line VL3 to the third sub-pixel SP3. The bridging layer BL is disposed in a crossing portion of the vertical connection lines 156 and the vertical lines VL1, VL2, and VL3.

[0067] The first vertical connection line 156-1 may be connected to the first vertical line VL1. The second vertical connection line 156-2 may cross the first vertical line VL1 in a state of being electrically insulated from the first vertical line VL1 to be connected to the second vertical line VL2. The third vertical connection line 156-3 may cross the first vertical line VL1 and the second vertical line VL2 in a state of being electrically insulated from the first vertical line VL1 and the second vertical line VL2 to be connected to the third vertical line VL3.

[0068] Each of the plurality of horizontal connection lines 158 may be connected between the plurality of horizontal lines HL1, HL2, and HL3 on the same second side (e.g., the bottom side adjacent to the right side of each of the plurality of third substrates 124) along the second direction Y to transmit a plurality of pixel driving voltages of the plurality of horizontal lines HL1, HL2, and HL3 to each of the plurality of third substrates 124.

[0069] For example, multiple horizontal connection lines 158 may include a first horizontal connection line 158-1, a second horizontal connection line 158-2, and a third horizontal connection line 158-3. The first horizontal connection line 158-1 may be connected to a first horizontal line HL1 and first sub-pixels SP1, second sub-pixels SP2, and third sub-pixels SP3 to transmit a gate voltage Vsc of the first horizontal line HL1 to the first sub-pixels SP1, second sub-pixels SP2, and third sub-pixels SP3. The second horizontal connection line 158-2 may be connected to a second horizontal line HL2 and first sub-pixels SP1, second sub-pixels SP2, and third sub-pixels SP3 to transmit a high-level voltage Vdd of the second horizontal line HL2 to the first sub-pixels SP1, second sub-pixels SP2, and third sub-pixels SP3. And the third horizontal connection line 158-3 may be connected to a third horizontal line HL3 and first sub-pixels SP1, second sub-pixels SP2, and third sub-pixels SP3 to transmit a low-level voltage Vss of the third horizontal line HL3 to the first sub-pixels SP1, second sub-pixels SP2, and third sub-pixels SP3.

[0070] The first horizontal connection line 158-1 may be connected to the first horizontal line HL1. The second horizontal connection line 158-2 may cross the first horizontal line HL1 in a state of being electrically insulated from the first horizontal line HL1 to be connected to the second horizontal line HL2. The third horizontal connection line 158-3 may cross the first horizontal line HL1 and the second horizontal line HL2 in a state of being electrically insulated from the first horizontal line HL1 and the second horizontal line HL2 to be connected to the third horizontal line HL3.

[0071] Each of the multiple vertical connection lines 156 and the multiple horizontal connection lines 158 may have a waveform shape, a diamond shape, or a zigzag shape.

[0072] In another embodiment, the multiple vertical connection lines 156 may be connected to the right sides of each of the multiple third substrates 124, and the multiple horizontal connection lines 158 may be connected to the top sides adjacent to the right sides of each of the multiple third substrates 124. Alternatively or additionally, the multiple vertical connection lines 156 may be connected to the left sides of each of the multiple third substrates 124, and the multiple horizontal connection lines 158 may be connected to the bottom sides adjacent to the left sides of each of the multiple third substrates 124. Alternatively or additionally, the multiple vertical connection lines 156 may be connected to the left sides of each of the multiple third substrates 124, and the multiple horizontal connection lines 158 may be connected to the top sides adjacent to the left sides of each of the multiple third substrates 124. In some implementations, each of the multiple vertical connection lines 156 is connected to the same first side of the multiple third substrates 124, and each of the multiple horizontal connection lines is connected to the same second side of the multiple third substrates. The first side and the second side are adjacent to each other.

[0073] Horizontal lines and vertical lines are disposed between adjacent rigid portions (e.g., the third substrate 124), and both sides of the rigid portions are connected to the horizontal lines and the vertical lines by connection lines. As a result, adjacent rigid portions have at least one side that is not connected to the horizontal lines and the vertical lines and is spaced apart from the horizontal lines and the vertical lines, and the strain applied to the flexible portion (e.g., the first substrate 122) is reduced.

[0074] Figure 4 is a cross-sectional view taken along line IV-IV of Figure 2 and Figure 5 is a cross-sectional view taken along line V-V of Figure 2 Figure 4 shows the structure of the rigid portion, and Figure 5 shows the connection structure of the vertical connection line and the vertical line.

[0075] In Figure 4 , a display panel 120 of a stretchable display device 110 according to a first embodiment of the present disclosure includes a first substrate 122 and a second substrate 166 that face each other and are spaced apart from each other.

[0076] A plurality of third substrates 124 spaced apart from each other along a first direction X and a second direction Y are disposed in a display area DA on an inner surface of the first substrate 122. The first substrate 122 supports and protects elements of the display panel 120, and the plurality of third substrates 124 support and protect elements of the plurality of sub-pixels SP1, SP2, and SP3.

[0077] Although not shown, an adhesive layer may be disposed between the first substrate 122 and the plurality of third substrates 124, and the plurality of third substrates 124 may be fixed to the first substrate 122 due to the adhesive layer.

[0078] The first substrate 122 is formed of a flexible material having bendable and stretchable properties, and the flexible material may include one of silicone rubbers (e.g., polydimethylsiloxane (PDMS)), elastomers (e.g., polyurethane (PU) and styrene-butadiene-styrene (SBS)).

[0079] For example, the first substrate 122 may have a Young's modulus of 1 MPa to 999 MPa, a ductility failure rate higher than about 100%, and a thickness of about 10 μm to about 1 mm.

[0080] The third substrate 124 is formed of a rigid material having a lower stretch than the flexible material of the first substrate 122, and the rigid material may include one of resins of the polyimide (PI) group and resins of the epoxy group.

[0081] For example, the third substrate 124 may have a Young's modulus equal to or greater than 1000 times the Young's modulus of the first substrate 122.​

[0082] Therefore, the first substrate 122 and the third substrate 124 have different stiffnesses and different Young's moduli from each other. The region corresponding to the third substrate 124 constitutes a rigid portion, and the region corresponding to the first substrate 122 of the portion other than the third substrate 124 constitutes a soft portion. The stiffness of the rigid portion can be greater than the stiffness of the soft portion.

[0083] The buffer layer 126 is disposed on the third substrate 124. The buffer layer 126 blocks the penetration of moisture or oxygen to protect the elements of the plurality of sub-pixels SP1, SP2, and SP3.

[0084] The buffer layer 126 has a single layer or multiple layers of inorganic insulating materials, and the inorganic insulating materials can include silicon nitride (SiNx), silicon oxide (SiOx), and silicon oxynitride (SiON).

[0085] In order to prevent damage such as cracks in the buffer layer 126 due to stretching (elongation), the buffer layer 126 can be patterned not to correspond to the third substrate 124 and can be disposed only on the third substrate 124.

[0086] In another embodiment, the buffer layer 126 can be omitted.

[0087] The semiconductor layer 128 is disposed on the buffer layer 126 in each of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3, and the gate insulating layer 130 is disposed on the semiconductor layer 128 on the entire third substrate 124.

[0088] The semiconductor layer 128 can include a channel region in its central portion and source and drain regions on both sides of the channel region.

[0089] For example, the semiconductor layer 128 can be formed of a semiconductor material such as polysilicon, and the gate insulating layer 130 can be formed of an inorganic insulating material such as silicon nitride (SiNx), silicon oxide (SiOx), and silicon oxynitride (SiON).

[0090] In order to prevent damage to the gate insulating layer 130 due to stretching, the gate insulating layer 130 can be patterned to correspond to the third substrate 124 and can be disposed only on the third substrate 124.

[0091] The gate electrode 132 is disposed on the gate insulating layer 130 corresponding to the semiconductor layer 128, and the gate pad 134 is disposed on the gate insulating layer 130 spaced apart from the gate electrode 132. The gate pad 134 can be connected to the gate electrode of the switching transistor Tsw.

[0092] The gate electrode 132 and the gate pad 134 may have the same layer and the same material as each other. For example, the gate electrode 132 and the gate pad 134 may have a single-layer or multi-layer metal material (e.g., one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and their alloys).

[0093] The interlayer insulating layer 136 is disposed on the gate electrode 132 and the gate pad 134 above the entire third substrate 124, and the source electrode 138 and the drain electrode 140 spaced apart from each other are disposed on the interlayer insulating layer 136.

[0094] The interlayer insulating layer 136 may be formed of an inorganic insulating material such as silicon oxide (SiOx) and silicon oxynitride (SiON).

[0095] In order to prevent damage to the cracks of the interlayer insulating layer 136 due to stretching, the interlayer insulating layer 136 may be patterned to correspond to the third substrate 124, and may be disposed only on the third substrate 124.

[0096] The source electrode 138 and the drain electrode 140 are respectively connected to the source region and the drain region of the semiconductor layer 128 through contact holes in the interlayer insulating layer 136 and in the gate insulating layer 130.

[0097] The source electrode 138 and the drain electrode 140 may have a single-layer or multi-layer metal material (e.g., one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and their alloys).

[0098] The semiconductor layer 128, the gate electrode 132, the source electrode 138, and the drain electrode 140 constitute a driving transistor Tdr, and the switching transistor Tsw may have the same cross-sectional structure as the driving transistor Tdr.

[0099] The planarization layer 142 is disposed on the source electrode 138 and the drain electrode 140 above the entire third substrate 124, and the first electrode 144, the data pad 146, and the connection pad 148 spaced apart from each other are disposed on the planarization layer 142.

[0100] The planarization layer 142 may have a single-layer or multi-layer organic insulating material (e.g., acrylic resin and benzocyclobutene (BCB)).

[0101] The first electrode 144 is connected to the drain electrode 140 through a contact hole in the planarization layer 142, the data pad 146 is connected to the source electrode 138 through a contact hole in the planarization layer 142, and the connection pad 148 is connected to the gate pad 134 through contact holes in the interlayer insulating layer 136 and the planarization layer 142.

[0102] The first electrode 144, the data pad 146, and the connection pad 148 may have the same layer and the same material as each other. For example, the first electrode 144, the data pad 146, and the connection pad 148 may have a single-layer or multi-layer metal material (e.g., one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and their alloys).

[0103] The bank layer 150 is disposed on the first electrode 144, the data pad 146, and the connection pad 148 above the entire third substrate 124. The bank layer 150 covers an edge portion of the first electrode 144 and has an opening portion exposing a central portion of the first electrode 144.

[0104] The light-emitting layer 152 is disposed on the first electrode 144 exposed through the opening portion of the bank layer 150. The light-emitting layer 152 may include a hole assist layer such as a hole injection layer and a hole transport layer, a light-emitting material layer, and an electron assist layer such as an electron transport layer and an electron injection layer.

[0105] The second electrode 154 is disposed on the light-emitting layer 152 and the bank layer 150 adjacent to the opening portion, and the vertical connection lines 156 and the horizontal connection lines 158 spaced apart from each other are disposed on the bank layer 150.

[0106] The second electrode 154 may be formed of a transparent conductive material (e.g., indium tin oxide (ITO) and indium zinc oxide (IZO)), and the vertical connection lines 156 and the horizontal connection lines 158 may have a single-layer or multi-layer metal material (e.g., one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and their alloys).

[0107] The first electrode 144 and the second electrode 154 may be an anode and a cathode, respectively, and the first electrode 144, the light-emitting layer 152, and the second electrode 154 constitute a light-emitting diode Del.

[0108] The vertical connection line 156 is connected to the data pad 146 through a contact hole in the bank layer 150, and the horizontal connection line 158 is connected to the connection pad 148 through a contact hole in the bank layer 150.

[0109] Vertical connection lines 156 and horizontal connection lines 158 extend from the third substrate 124 of the rigid portion to the flexible portion to be connected to vertical lines VL1, VL2, and VL3 and horizontal lines HL1, HL2, and HL3 on the first substrate 122, respectively. The anti-damage layer 160 may be disposed between the vertical connection lines 156 and horizontal connection lines 158 and the first substrate 122, and between the vertical lines VL1, VL2, VL3 and horizontal lines HL1, HL2, HL3 and the first substrate 122. Each of the vertical connection lines 156 and horizontal connection lines 158 may extend along the side surface 124S of the third substrate 24 from the top surface 124U of the third substrate 124 and extend beyond the third substrate 104 on top of the anti-damage layer 160.

[0110] Although not shown, an adhesive layer may be disposed between the anti-damage layer 160 and the first substrate 122, and the anti-damage layer 160 may be fixed to the first substrate 122 due to the adhesive layer.

[0111] The anti-damage layer 160 may be disposed on the first substrate 122 to correspond to the shape of each of the vertical lines VL1, VL2, and VL3 and horizontal lines HL1, HL2, and HL3 in the flexible portion.

[0112] The anti-damage layer 160 may correspond to the vertical connection lines 156, horizontal connection lines 158, vertical lines VL1, VL2, and VL3, and horizontal lines HL1, HL2, and HL3 to have one of a waveform shape, a diamond shape, and a zigzag shape.

[0113] The anti-damage layer 160 may be formed of a rigid material such as a resin of a polyimide (PI) group and a resin of an epoxy group. The anti-damage layer 160 may have the same material and the same thickness as the third substrate 124.

[0114] The anti-damage layer 160 of the rigid material has the same shape as the vertical connection lines 156, horizontal connection lines 158, vertical lines VL1, VL2, and VL3, and horizontal lines HL1, HL2, and HL3, and is disposed below the vertical connection lines 156, horizontal connection lines 158, vertical lines VL1, VL2, and VL3, and horizontal lines HL1, HL2, and HL3. As a result, when the display panel 120 is stretched, breakdown of the vertical connection lines 156, horizontal connection lines 158, vertical lines VL1, VL2, and VL3, and horizontal lines HL1, HL2, and HL3 is prevented, and excessive stretching of the first substrate 122 is prevented.

[0115] In another embodiment, the anti-damage layer 160 may be omitted, and the vertical connection lines 156, horizontal connection lines 158, vertical lines VL1, VL2, and VL3, and horizontal lines HL1, HL2, and HL3 may directly contact the first substrate 122.

[0116] The encapsulation layer 162 is disposed on the second electrode 154. The encapsulation layer 162 covers the light-emitting diode Del and contacts the top surface of the bank layer 150 to encapsulate the light-emitting diode Del. As a result, the penetration of external moisture or oxygen can be prevented.

[0117] The encapsulation layer 162 may have a single layer of an inorganic insulating material or a multi-layer in which inorganic insulating materials and organic insulating materials are alternately laminated.

[0118] The encapsulation layer 162 may be disposed to selectively cover the second electrode 154 of the third substrate 124, and the encapsulation layers 162 of the plurality of third substrates 124 may be spaced apart from each other.

[0119] As a result, when the display panel 120 is stretched, damage to the encapsulation layer 162 is minimized and a reduction in the reliability of the light-emitting diode Del is prevented.

[0120] The adhesive layer 164 and the second substrate 166 are sequentially disposed on the encapsulation layer 162, the vertical connection lines 156, and the horizontal connection lines 158.

[0121] The second substrate 166 may be formed of the same material as the first substrate 122 and may be attached to the first substrate 122 due to the adhesive layer 164.

[0122] For example, the second substrate 166 may include one of silicone rubber (e.g., polydimethylsiloxane (PDMS)), elastomers (e.g., polyurethane (PU) and styrene-butadiene-styrene (SBS)).

[0123] Although in Figure 4 the first embodiment of, each sub-pixel SP1, SP2, and SP3 includes a light-emitting diode Del of an organic material, in another embodiment, each sub-pixel SP1, SP2, and SP3 may include a micro light-emitting diode.

[0124] In Figure 5 the anti-damage layer 160 is selectively disposed in the soft portion on the first substrate 122 of the stretchable display device 110 according to the first embodiment of the present disclosure in a manner corresponding to the vertical connection lines 156 and the vertical lines VL1, VL2, and VL3.

[0125] Although not shown, the anti-damage layer 160 may be selectively disposed in the soft portion on the first substrate 122 in a manner corresponding to the horizontal connection lines 158 and the horizontal lines HL1, HL2, and HL3.

[0126] The bridging layer BL is disposed on the anti-damage layer 160 in the cross-section of the vertical connection lines 156 and the vertical lines VL1, VL2, and VL3.

[0127] As shown Figure 2 in FIG. 2, the bridging layer BL may be disposed at the intersection of the horizontal connection line 158 and the horizontal lines HL1, HL2, and HL3 on the damage prevention layer 160.

[0128] The bridging layer BL may have a circular shape or a polygonal shape and may have a single layer or multiple layers of metal materials (e.g., one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and their alloys).

[0129] The cross insulation layer 155 is disposed on the bridging layer BL. The cross insulation layer 155 may have a circular shape or a polygonal shape that covers two end portions of the bridging layer BL along the first direction X and exposes two end portions of the bridging layer BL along the second direction Y. The cross insulation layer 155 may be formed of an inorganic insulation material or an organic insulation material.

[0130] The vertical lines VL1, VL2, and VL3 are disposed on the cross insulation layer 155 along the second direction Y, and the vertical connection line 156 is disposed on the damage prevention layer 160.

[0131] The vertical connection line 156 (156-3 shown as an exemplary example) extends from the third substrate 124 to the first vertical line VL1 along the first direction X to contact the bridging layer BL exposed outside one side of the cross insulation layer 155 below the first vertical line VL1. Due to the cross insulation layer 155 below the first vertical line VL1, the third vertical connection line 156-3 does not contact the first vertical line VL1 and is insulated from the first vertical line VL1.

[0132] The vertical connection line 156 contacts the bridging layer BL exposed outside the other side of the cross insulation layer 155 below the first vertical line VL1 and extends from the first vertical line VL1 to the second vertical line VL2 along the first direction X to contact the bridging layer BL exposed outside one side of the cross insulation layer 155 below the second vertical line VL2. Due to the cross insulation layer 155 below the second vertical line VL2, the third vertical connection line 156-3 does not contact the second vertical line and is insulated from the second vertical line.

[0133] In some implementations, the third vertical connection line 156-3 partially extends on the cross insulation layer 155 below the first vertical line VL1 and on the cross insulation layer 155 below the second vertical line VL2. Thus, the third vertical connection line 156-3 may be at the same level as the first vertical line VL1 and the second vertical line VL2.

[0134] The vertical connection line 156 contacts the bridging layer BL that is exposed outside the other side of the cross insulating layer 155 below the second vertical line VL2, and extends from the second vertical line VL2 to the third vertical line VL3 along the first direction X to connect to the third vertical line VL3.

[0135] The vertical lines VL1, VL2, and VL3 and the vertical connection line 156 can have the same layer and the same material as each other, and can cover both sides of the cross insulating layer 155.

[0136] As Figure 2 shown, the first vertical connection line 156-1 is connected between the first side (as shown on the right side of Figure 2 ) of each of the plurality of third substrates 124 and the first vertical line VL1, and there is no bridging layer therebetween.

[0137] The second vertical connection line 156-2 is connected between the first side of each of the plurality of third substrates 124 and the first side BLS1 of the bridging layer BL below the first vertical line Vl1, and between the second side BLS2 of the bridging layer BL below the first vertical line Vl1 and the second vertical line VL2.

[0138] The third vertical connection line 156-3 is connected between the first side of each of the plurality of third substrates 124 and the first side BLS1 of the bridging layer BL below the first vertical line VL1, between the second side BLS2 of the bridging layer BL below the first vertical line VL1 and the first side BLS1 of the bridging layer BL below the second vertical line VL2, and between the second side BLS2 of the bridging layer BL below the second vertical line and the third vertical line VL3.

[0139] Although not shown, the horizontal lines HL1, HL2, and HL3 are disposed on the cross insulating layer 155 along the first direction X, and the horizontal connection line 158 is disposed on the anti-damage layer 160.

[0140] The horizontal connection line 158 extends from the third substrate 124 to the first horizontal line HL1 along the second direction Y to contact the bridging layer BL that is exposed outside one side of the cross insulating layer 155 below the first horizontal line HL1, and contacts the bridging layer BL that is exposed outside the other side of the cross insulating layer 155 below the first horizontal line HL1. The horizontal connection line 158 extends from the first horizontal line HL1 to the second horizontal line HL2 along the second direction Y to contact the bridging layer BL that is exposed outside one side of the cross insulating layer 155 below the second horizontal line HL2, and contacts the bridging layer BL that is exposed outside the other side of the cross insulating layer 155 below the second horizontal line HL2. The horizontal connection line 158 extends from the second horizontal line HL2 to the third horizontal line HL3 along the second direction Y to connect to the third horizontal line HL3.

[0141] The horizontal lines HL1, HL2, and HL3 and the horizontal connection line 158 may have the same layer and the same material as each other, and may cover both sides of the crossing insulating layer 155.

[0142] In Figure 5 it, the third vertical connection line among the plurality of vertical connection lines 156 is connected to the third vertical line VL3. The second vertical connection line among the plurality of vertical connection lines 156 may cross the first vertical line VL1 by contacting the bridging layer BL below the first vertical line VL1, and may be connected to the second vertical line VL2. The first vertical connection line among the plurality of vertical connection lines 156 may be directly connected to the first vertical line VL1 without contacting the bridging layer BL.

[0143] Although the second vertical connection line among the plurality of vertical connection lines 156 extends to the second vertical line VL2 to be connected to the second vertical line VL2, the anti-damage layer 160 below the second vertical connection line may extend through the second vertical line VL2 to the third vertical line VL3 to be connected to the anti-damage layer 160 below the third vertical line VL3. The extended portion of the anti-damage layer 160 may be shown as a dotted line in Figure 2 it.

[0144] Although the plurality of vertical connection lines 156 extend to one of the first vertical line VL1, the second vertical line VL2, and the third vertical line VL3, the anti-damage layer 160 below the plurality of vertical connection lines 156 may extend to the third vertical line VL3 to be connected to the anti-damage layer 160 below the third vertical line VL3. As a result, the anti-damage layer 160 may be arranged in a matrix shape throughout the display panel 120, and the structural stability of the anti-damage layer 160 may be improved.

[0145] The anti-damage layer 160 may extend to one of the first vertical line VL1, the second vertical line VL2, and the third vertical line VL3 that is the same as the plurality of vertical connection lines 156.

[0146] Although not shown, the second horizontal connection line among the plurality of horizontal connection lines 158 may cross the first horizontal line HL1 by contacting the bridging layer BL below the first horizontal line HL1 to be connected to the second horizontal line HL2. The first horizontal connection line among the plurality of horizontal connection lines 158 may be directly connected to the first horizontal line HL1 without contacting the bridging layer BL.

[0147] Similar to the multiple vertical connection lines 156, although the multiple horizontal connection lines 158 extend to one of the first horizontal line HL1, the second horizontal line HL2, and the third horizontal line HL3, the anti-damage layer 160 below the multiple horizontal connection lines 158 extends to the third horizontal line HL3 to connect to the anti-damage layer 160 below the third horizontal line HL3. As a result, the anti-damage layer 160 can be set in a matrix shape in the entire display panel 120, and the structural stability of the anti-damage layer 160 can be improved.

[0148] The anti-damage layer 160 can extend to one of the first horizontal line HL1, the second horizontal line HL2, and the third horizontal line HL3 that is the same as the multiple horizontal connection lines 158.

[0149] The multiple vertical lines VL1, VL2, and VL3 and the multiple horizontal lines HL1, HL2, and HL3 can cross each other using the cross insulation layer 155 and the bridging layer BL to maintain the connection.

[0150] In another embodiment, the vertical lines and the vertical connection lines can have different layers.

[0151] Figure 6A is a cross-sectional view showing a cross-section of a display panel of a stretchable display device according to a second embodiment of the present disclosure. Figure 6A With Figure 2 the line V-V corresponding, and the illustration of the parts that are the same as those in the first embodiment can be omitted.

[0152] In Figure 6A it, the anti-damage layer 260 is selectively provided in the soft part of the display panel of the stretchable display device according to the second embodiment of the present disclosure to correspond to the vertical connection lines 256 and the multiple vertical lines VL1, VL2, and VL3.

[0153] Although not shown, the anti-damage layer 260 can be selectively provided in the soft part on the first substrate 222 to correspond to the horizontal connection lines and the multiple horizontal lines HL1, HL2, and HL3.

[0154] The vertical connection line 256 is provided on the anti-damage layer 260 and extends from the third substrate to the third vertical line VL3 along the first direction X.

[0155] Although not shown, the multiple horizontal lines can be provided on the anti-damage layer 260 and can extend from the third substrate along the first direction X.

[0156] The cross insulation layer 255 is disposed on the vertical connection line 256. The cross insulation layer 255 completely covers both sides of the vertical connection line 256 along the second direction Y, and has holes or openings 255H3 that expose the vertical connection line 256 corresponding to the third vertical line VL3. The cross insulation layer 255 may include an inorganic insulating material or an organic insulating material. The cross insulation layer 255 also has contact holes or openings 255H1, 255H2 (shown as dashed lines) that expose the vertical connection lines 156-1 or 156-2 for connecting to the first vertical line VL1 and the second vertical line VL2, respectively.

[0157] As Figure 6B shown, the cross insulation layer 255 is disposed on the plurality of horizontal lines HL1, HL2, and HL3. The cross insulation layer 255 may completely cover both sides of the plurality of horizontal lines HL1, HL2, and HL3 along the second direction Y, and may have contact holes 255H6 that expose the third horizontal line HL3 (holes 255H4, 255H5 that expose the first horizontal line HL1 and the second horizontal line HL2, respectively). The horizontal connection line 258 (the third horizontal connection line 258-3 shown) is located on the cross insulation layer 255 and is connected to the corresponding horizontal line HL (HL3 shown) through the corresponding hole 255H (255H6 shown).

[0158] As Figure 6A shown, the plurality of vertical lines VL1, VL2, and VL3 are disposed on the cross insulation layer 255 along the second direction Y. The first vertical line VL1 and the second vertical line VL2 are electrically insulated from the vertical connection line 256 due to the cross insulation layer 255, and the third vertical line VL3 is electrically connected to the vertical connection line 256 through the contact hole in the cross insulation layer 255.

[0159] The vertical connection line 256 and the plurality of vertical lines VL1, VL2, and VL3 may have different layers from each other.

[0160] As Figure 6B shown, the horizontal connection line is disposed on the cross insulation layer 255 along the second direction Y. The horizontal connection line is electrically insulated from the first horizontal line HL1 and the second horizontal line HL2 due to the cross insulation layer 255, and the horizontal connection line is electrically connected to the third horizontal line HL3 through the contact hole in the cross insulation layer 255.

[0161] The horizontal connection line and the plurality of horizontal lines HL1, HL2, and HL3 may have different layers from each other.

[0162] In Figure 6AAmong them, the third vertical connection line among the multiple vertical connection lines 256 is connected to the third vertical line VL3 through a hole or opening 255H3 in the cross insulating layer 255. The second vertical connection line among the multiple vertical connection lines 256 may cross the first vertical line VL1 with the cross insulating layer 255 interposed therebetween, and may be connected to the second vertical line VL2 through a contact hole 255H2 in the cross insulating layer 255. The first vertical connection line among the multiple vertical connection lines 256 may be connected to the first vertical line VL1 through a contact hole in the cross insulating layer 255.

[0163] Although the second vertical connection line among the multiple vertical connection lines 256 extends to the second vertical line VL2 to be connected to the second vertical line VL2, the anti-damage layer 260 under the second vertical connection line may extend through the second vertical line VL2 to the third vertical line VL3 to be connected to the anti-damage layer 260 under the third vertical line VL3. The extended portion of the anti-damage layer 260 may be as Figure 2 shown by the dashed line in.

[0164] Although the multiple vertical connection lines 256 extend to one of the first vertical line VL1, the second vertical line VL2, and the third vertical line VL3, the anti-damage layer 260 under the multiple vertical connection lines 256 may extend to the third vertical line VL3 to be connected to the anti-damage layer 260 under the third vertical line VL3. Therefore, the anti-damage layer 260 may be arranged in a matrix shape in the entire display panel, and the structural stability of the anti-damage layer 260 may be improved.

[0165] In another embodiment, the anti-damage layer 260 may extend to one of the first vertical line VL1, the second vertical line VL2, and the third vertical line VL3 that is the same as the multiple vertical connection lines 256.

[0166] Figure 5 and Figure 6A show a cross-sectional view of the vertical line VL and the vertical connection line 156 as an example. In some implementations, the cross-sectional views similar to Figure 5 and Figure 6A can also be applied to the horizontal line HL and the horizontal connection line 158, which may be different from the implementation of the horizontal line HL and the horizontal connection line shown in Figure 6B , or be a supplement to the implementation of the horizontal line HL and the horizontal connection line shown in Figure 6B .

[0167] As shown in Figure 6BAs shown, the second horizontal connection line among multiple horizontal connection lines may cross the first horizontal line, and an inter-crossing insulating layer 255 may be interposed therebetween to be connected to the second horizontal line through a contact hole in the inter-crossing insulating layer 255. The first horizontal connection line among multiple horizontal connection lines may be connected to the first horizontal line through a contact hole in the inter-crossing insulating layer 255.

[0168] Similar to the multiple vertical connection lines 256, although the multiple horizontal connection lines extend to one of the first horizontal line, the second horizontal line, and the third horizontal line, the anti-damage layer 260 below the multiple horizontal connection lines extends to the third horizontal line to be connected to the anti-damage layer 260 below the third horizontal line. Accordingly, the anti-damage layer 260 may be arranged in a matrix shape in the entire display panel, and the structural stability of the anti-damage layer 260 may be improved.

[0169] In another embodiment, the anti-damage layer 260 may extend to one of the first horizontal line, the second horizontal line, and the third horizontal line that is the same as the multiple horizontal connection lines.

[0170] Multiple vertical lines VL1, VL2, and VL3 and multiple horizontal lines HL1, HL2, and HL3 cross each other, and an inter-crossing insulating layer 255 is interposed therebetween to maintain the connection.

[0171] In the display device according to the first embodiment and the second embodiment of the present disclosure, multiple vertical lines VL1, VL2, and VL3 are arranged between third substrates 124 of adjacent rigid parts along a first direction X, and multiple horizontal lines HL1, HL2, and HL3 are arranged between third substrates 124 of adjacent rigid parts along a second direction Y. Multiple vertical connection lines 156 connect a first side of the third substrate 124 of the rigid part and the multiple vertical lines VL1, VL2, and VL3, and multiple horizontal connection lines 158 connect a second side of the third substrate 124 of the rigid part and the multiple horizontal lines HL1, HL2, and HL3. Since adjacent rigid parts are not connected to the horizontal and vertical lines and have at least one side spaced apart from the horizontal and vertical lines, the strain applied to the flexible part is reduced and the stretching rate is maximized.

[0172] For example, when the display panel 120 is stretched by about 20%, each of the rigid part and the flexible part may be stretched by about 20%. Accordingly, the stretching reliability is improved.

[0173] In another embodiment, four adjacent rigid parts may be divided into a rigid part group, and horizontal and vertical lines may be arranged between adjacent rigid part groups.

[0174] Figure 7FIG. 0 is a plan view showing a display panel of a stretchable display device according to a third embodiment of the present disclosure. Illustrative diagrams of portions identical to those of the first and second embodiments may be omitted.

[0175] In Figure 7 FIG. 5, a display panel 320 of a stretchable display device according to a third embodiment of the present disclosure includes a plurality of third substrates 324, a plurality of vertical lines VL1, VL2, and VL3 disposed between two adjacent ones of the plurality of third substrates 324 along a first direction X, a plurality of horizontal lines HL1, HL2, and HL3 disposed between two adjacent ones of the plurality of third substrates 324 along a second direction Y intersecting the first direction X, a plurality of vertical connection lines 356 connecting the plurality of third substrates 324 and the plurality of vertical lines VL1, VL2, and VL3, and a plurality of horizontal connection lines 358 connecting the plurality of third substrates 324 and the plurality of horizontal lines HL1, HL2, and HL3.

[0176] Each of the plurality of third substrates 324 includes a first sub-pixel SP1, a second sub-pixel SP2, and a third sub-pixel SP3 that constitute a pixel, and each of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 includes a light-emitting diode Del.

[0177] Each of the plurality of third substrates 324 may have a quadrilateral shape.

[0178] Four third substrates 324 in two adjacent rows and two adjacent columns along the first direction X and the second direction Y constitute a rigid unit group RG1, RG2, RG3, and RG4. A plurality of vertical lines VL1, VL2, and VL3 are disposed between two adjacent rigid unit groups along the first direction X, and a plurality of horizontal lines HL1, HL2, and HL3 are disposed between two adjacent rigid unit groups along the second direction Y.

[0179] For example, when multiple third substrates 324 include the first-first pixel P11 to the fourth-fourth pixel P44 among 16 pixels arranged in four rows and four columns (for example, the first-first pixel P11 is arranged in the first row and the first column, the second-third pixel P23 is arranged in the second row and the third column, and the fourth-fourth pixel P44 is arranged in the fourth row and the fourth column), the first-first pixel P11, the first-second pixel P12, the second-first pixel P21, and the second-second pixel P22 may form a first rigid unit group RG1, the first-third pixel P13, the first-fourth pixel P14, the second-third pixel P23, and the second-fourth pixel P24 may form a second rigid unit group RG2, the third-first pixel P31, the third-second pixel P32, the fourth-first pixel P41, and the fourth-second pixel P42 may form a third rigid unit group RG3, and the third-third pixel P33, the third-fourth pixel P34, the fourth-third pixel P43, and the fourth-fourth pixel P44 may form a fourth rigid unit group RG4.

[0180] The first vertical line VL1, the second vertical line VL2, and the third vertical line VL3 may be arranged between the adjacent first rigid unit group RG1 and the second rigid unit group RG2 along the first direction X and between the adjacent third rigid unit group RG3 and the fourth rigid unit group RG4 along the first direction X. The first horizontal line HL1, the second horizontal line HL2, and the third horizontal line HL3 may be arranged between the first rigid unit group RG1 and the third rigid unit group RG3 along the second direction Y and between the adjacent second rigid unit group RG2 and the fourth rigid unit group RG4 along the second direction Y.

[0181] Each first side of the four third substrates 324 of each rigid unit group RG1, RG2, RG3, and RG4 is connected to the vertical lines VL1, VL2, and VL3 by a plurality of vertical connection lines 356, and each first side of the four third substrates 324 of each rigid unit group RG1, RG2, RG3, and RG4 is connected to the horizontal lines HL1, HL2, and HL3 by a plurality of horizontal connection lines 358.

[0182] For example, the left side of the first-first pixel P11 of the first rigid unit group RG1 may be connected to the vertical lines VL1, VL2, and VL3 at the left side of the first-first pixel P11 of the first rigid unit group RG1 by a plurality of vertical connection lines 356, and the top side adjacent to the left side of the first-first pixel P11 of the first rigid unit group RG1 may be connected to the horizontal lines HL1, HL2, and HL3 at the top of the first-first pixel P11 of the first rigid unit group RG1 by a plurality of horizontal connection lines 358.

[0183] The right side of the first - second pixels P12 of the first rigid group RG1 can be connected to multiple vertical lines VL1, VL2, and VL3 at the right side of the first - second pixels P12 of the first rigid group RG1 through multiple vertical connection lines 356, and the top side adjacent to the right side of the first - second pixels P12 of the first rigid group RG1 can be connected to multiple horizontal lines HL1, HL2, and HL3 at the top of the first - second pixels P12 of the first rigid group RG1 through multiple horizontal connection lines 358.

[0184] The left side of the second - first pixels P21 of the first rigid group RG1 can be connected to multiple vertical lines VL1, VL2, and VL3 at the left side of the second - first pixels P21 of the first rigid group RG1 through multiple vertical connection lines 356, and the bottom side adjacent to the left side of the second - first pixels P21 of the first rigid group RG1 can be connected to multiple horizontal lines HL1, HL2, and HL3 at the bottom of the second - first pixels P21 of the first rigid group RG1 through multiple horizontal connection lines 358.

[0185] The right side of the second - second pixels P22 of the first rigid group RG1 can be connected to multiple vertical lines VL1, VL2, and VL3 at the right side of the second - second pixels P22 of the first rigid group RG1 through multiple vertical connection lines 356, and the bottom side adjacent to the right side of the second - second pixels P22 of the first rigid group RG1 can be connected to multiple horizontal lines HL1, HL2, and HL3 at the bottom of the second - second pixels P22 of the first rigid group RG1 through multiple horizontal connection lines 358.

[0186] Each of the first - third pixels P13, first - fourth pixels P14, second - third pixels P23, and second - fourth pixels P24 of the second rigid group RG2, the third - first pixels P31, third - second pixels P32, fourth - first pixels P41, and fourth - second pixels P42 of the third rigid group RG3, and the third - third pixels P33, third - fourth pixels P34, fourth - third pixels P43, and fourth - fourth pixels P44 of the fourth rigid group RG4 can be connected to multiple vertical lines VL1, VL2, and VL3 through multiple vertical connection lines 356, and can be connected to multiple horizontal lines HL1, HL2, and HL3 through multiple horizontal connection lines 358.

[0187] The multiple vertical lines VL1, VL2, and VL3 are spaced apart from each other along the second direction Y to transmit multiple pixel driving voltages for driving the light - emitting diodes Del. The multiple horizontal lines HL1, HL2, and HL3 are spaced apart from each other along the first direction X to transmit multiple pixel driving voltages for driving the light - emitting diodes Del.

[0188] For example, multiple vertical lines may include a first vertical line VL1, a second vertical line VL2, and a third vertical line VL3, and the first vertical line VL1, the second vertical line VL2, and the third vertical line VL3 may respectively transmit a red data voltage Vda, a green data voltage Vda, and a blue data voltage Vda. Multiple horizontal lines may include a first horizontal line HL1, a second horizontal line HL2, and a third horizontal line HL3, and the first horizontal line HL1, the second horizontal line HL2, and the third horizontal line HL3 may respectively transmit a strobe voltage Vsc, a high-level voltage Vdd, and a low-level voltage Vss.

[0189] In another embodiment, multiple vertical lines may include a first vertical line, a second vertical line, a third vertical line, and a fourth vertical line, and the first vertical line, the second vertical line, the third vertical line, and the fourth vertical line may respectively transmit a red data voltage, a green data voltage, a blue data voltage, and a reference voltage. Multiple horizontal lines may include a first horizontal line, a second horizontal line, a third horizontal line, and a fourth horizontal line, and the first horizontal line, the second horizontal line, the third horizontal line, and the fourth horizontal line may respectively transmit a strobe voltage, a high-level voltage, a low-level voltage, and a light-emitting voltage.

[0190] Each of the multiple vertical lines VL1, VL2, and VL3 and the multiple horizontal lines HL1, HL2, and HL3 may have a waveform shape, a diamond shape, or a zigzag shape.

[0191] Each of the multiple vertical connection lines 356 may be connected between the first side of each of the multiple third substrates 324 and the multiple vertical lines VL1, VL2, and VL3 along a first direction X to transmit the pixel driving voltages of the multiple vertical lines VL1, VL2, and VL3 to each of the multiple third substrates 324.

[0192] For example, the multiple vertical connection lines 356 may include a first vertical connection line, a second vertical connection line, and a third vertical connection line. The first vertical connection line may be connected to the first vertical line VL1 and the first sub-pixel SP1 to transmit the red data voltage Vda of the first vertical line VL1 to the first sub-pixel SP1, the second vertical connection line may be connected to the second vertical line VL2 and the second sub-pixel SP2 to transmit the green data voltage Vda of the second vertical line VL2 to the second sub-pixel SP2, and the third vertical connection line may be connected to the third vertical line VL3 and the third sub-pixel SP3 to transmit the blue data voltage Vda of the third vertical line VL3 to the third sub-pixel SP3.

[0193] The first vertical connection line can be connected to the first vertical line VL1. The second vertical connection line can cross the first vertical line VL1 in a state of being electrically insulated from the first vertical line VL1 to be connected to the second vertical line VL2. The third vertical connection line can cross the first vertical line VL1 and the second vertical line VL2 in a state of being electrically insulated from the first vertical line VL1 and the second vertical line VL2 to be connected to the third vertical line VL3.

[0194] Each of the plurality of horizontal connection lines 358 can be connected between the second side adjacent to the first side of each of the plurality of third substrates 324 and the plurality of horizontal lines HL1, HL2, and HL3 along the second direction Y to transmit the pixel driving voltages of the plurality of horizontal lines HL1, HL2, and HL3 to each of the plurality of third substrates 324.

[0195] For example, the plurality of horizontal connection lines 358 can include a first horizontal connection line, a second horizontal connection line, and a third horizontal connection line. The first horizontal connection line can be connected to the first horizontal line HL1 and the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 to transmit the gate voltage Vsc of the first horizontal line HL1 to the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3. The second horizontal connection line can be connected to the second horizontal line HL2 and the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 to transmit the high-level voltage Vdd of the second horizontal line HL2 to the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3. And the third horizontal connection line can be connected to the third horizontal line HL3 and the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 to transmit the low-level voltage Vss of the third horizontal line HL3 to the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3.

[0196] The first horizontal connection line can be connected to the first horizontal line HL1. The second horizontal connection line can cross the first horizontal line HL1 in a state of being electrically insulated from the first horizontal line HL1 to be connected to the second horizontal line HL2. The third horizontal connection line can cross the first horizontal line HL1 and the second horizontal line HL2 in a state of being electrically insulated from the first horizontal line HL1 and the second horizontal line HL2 to be connected to the third horizontal line HL3.

[0197] Each of the plurality of vertical connection lines 356 and the plurality of horizontal connection lines 358 can have a waveform shape, a rhombus shape, or a zigzag shape.

[0198] The light-emitting diodes Del of the first sub-pixel, the second sub-pixel, and the third sub-pixel can be provided at the four corner portions of each rigid unit group.

[0199] For example, in the first rigid unit group RG1, the light-emitting diode Del can be disposed at the upper left corner of the first-first pixel P11, at the upper right corner of the first-second pixel P12, at the lower left corner of the second-first pixel P21, and at the lower right corner of the second-second pixel P22.

[0200] Similarly, in the second rigid unit group RG2, the light-emitting diode Del can be disposed at the upper left corner of the first-third pixel P13, at the upper right corner of the first-fourth pixel P14, at the lower left corner of the second-third pixel P23, and at the lower right corner of the second-fourth pixel P24. In the third rigid unit group RG3, the light-emitting diode Del can be disposed at the upper left corner of the third-first pixel P31, at the upper right corner of the third-second pixel P32, at the lower left corner of the fourth-first pixel P41, and at the lower right corner of the fourth-second pixel P42. In the fourth rigid unit group RG4, the light-emitting diode Del can be disposed at the upper left corner of the third-third pixel P33, at the upper right corner of the third-fourth pixel P34, at the lower left corner of the fourth-third pixel P43, and at the lower right corner of the fourth-fourth pixel P44.

[0201] As a result, a first x-gap distance Dx1 along the first direction X between the light-emitting diode Del of the first-first pixel P11 of the first rigid unit group RG1 and the light-emitting diode Del of the first-second pixel P12 of the first rigid unit group RG1 can be similar to or the same as a second x-gap distance Dx2 along the first direction X between the light-emitting diode Del of the first-second pixel P12 of the first rigid unit group RG1 and the light-emitting diode Del of the first-third pixel P13 of the second rigid unit group RG2. A first y-gap distance Dy1 along the second direction Y between the light-emitting diode Del of the first-first pixel P11 of the first rigid unit group RG1 and the light-emitting diode Del of the second-first pixel P21 of the first rigid unit group RG1 can be similar to or the same as a second y-gap distance Dy2 along the second direction Y between the light-emitting diode Del of the second-first pixel P21 of the first rigid unit group RG1 and the light-emitting diode Del of the third-first pixel P31 of the third rigid unit group RG3.

[0202] Although the plurality of third substrates 324 are spaced apart from each other by different distances along the first direction X and the second direction Y, the light-emitting diodes Del are spaced apart from each other by similar or the same distances. Therefore, the light emitted from the light-emitting diodes Del has a uniform distance, and the uniformity of the image displayed through the display panel 320 is improved.

[0203] In the display device according to the third embodiment of the present disclosure, a plurality of vertical lines VL1, VL2, and VL3 are provided between third substrates 324 adjacent to each other along the first direction X in the rigid portion, and a plurality of horizontal lines HL1, HL2, and HL3 are provided between third substrates 324 adjacent to each other along the second direction Y in the rigid portion. A plurality of vertical connection lines 356 connect the first side of the third substrate 324 of the rigid portion and the plurality of vertical lines VL1, VL2, and VL3, and a plurality of horizontal connection lines 358 connect the second side of the third substrate 324 of the rigid portion and the plurality of horizontal lines HL1, HL2, and HL3. Since adjacent rigid portions are not connected to the horizontal and vertical lines and have at least one side spaced apart from the horizontal and vertical lines, the strain applied to the flexible portion is reduced and the stretching rate is maximized.

[0204] For example, when the display panel 320 is stretched by about 20%, each of the rigid portion and the flexible portion can be stretched by about 20%. Therefore, the stretching reliability is improved.

[0205] Four adjacent third substrates 324 along the first direction X and the second direction Y are divided into a rigid portion group. A plurality of vertical lines VL1, VL2, and VL3 are provided between two rigid portion groups adjacent to each other along the first direction X, and a plurality of horizontal lines HL1, HL2, and HL3 are provided between two rigid portion groups adjacent to each other along the second direction Y. A plurality of vertical connection lines 356 connect the first side of the third substrate 324 of the rigid portion and the plurality of vertical lines VL1, VL2, and VL3, and a plurality of horizontal connection lines 358 connect the second side of the third substrate 324 of the rigid portion and the plurality of horizontal lines HL1, HL2, and HL3. As a result, the area ratio of the rigid portion to the flexible portion is about 2:1. Since the area ratio of the rigid portion increases, the degree of freedom in designing a relatively high resolution increases.

[0206] In addition, since the light emitting diodes Del are provided at the corners of each rigid portion group, the light emitting diodes have similar or the same gap distances. As a result, the light emitted from the light emitting diodes Del has a uniform distance, and the uniformity of the image displayed by the display panel 320 is improved.

[0207] In the description herein, the voltage lines (vertical voltage lines VL and horizontal voltage lines HL) are described as examples of signal lines corresponding to or connected to the unit substrate 124. Similar descriptions can also be applied to other signal lines (such as gate lines or data lines) that will be understood by those of ordinary skill in the art, and these are all included within the scope of the present disclosure.

[0208] It will be apparent to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the scope of the present disclosure. Accordingly, the present disclosure is intended to cover modifications and variations of the present disclosure as long as they fall within the scope of the appended claims.

[0209] Cross - reference to related applications

[0210] This application claims the priority benefit of Korean Patent Application No. 10 - 2023 - 0187886, filed in Korea on December 21, 2023, which is hereby incorporated by reference in its entirety.

Claims

1. A display device, comprising: a first substrate and a second substrate, the first substrate and the second substrate facing each other and spaced apart from each other; a plurality of third substrates, the plurality of third substrates being located on an inner surface of the first substrate facing the second substrate, and the plurality of third substrates being spaced apart from each other; a plurality of vertical lines, wherein the plurality of vertical lines are located between two third substrates adjacent to each other among the plurality of third substrates along the first direction; a plurality of horizontal lines, wherein the plurality of horizontal lines are located between two third substrates adjacent to each other among the plurality of third substrates along a second direction intersecting the first direction; a plurality of vertical connection lines connecting a first side of a third substrate among the plurality of third substrates and a vertical line among the plurality of vertical lines; a plurality of horizontal connection lines, the plurality of horizontal connection lines connecting a second side of the one of the plurality of third substrates and a horizontal line of the plurality of horizontal lines, the second side of the third substrate being adjacent to the first side of the third substrate; as well as A plurality of light emitting diodes are respectively located on the plurality of third substrates.

2. The display device according to claim 1, wherein: A third substrate of the plurality of third substrates includes at least one side spaced apart from the plurality of vertical lines and the plurality of horizontal lines.

3. The display device according to claim 1, wherein: The first substrate and the second substrate include a soft material, and the plurality of third substrates include a rigid material.

4. The display device according to claim 1, wherein: The plurality of vertical lines, the plurality of horizontal lines, the plurality of vertical connection lines, and the plurality of horizontal connection lines have one of a wave shape, a diamond shape, and a zigzag shape.

5. The display device according to claim 1, wherein: The plurality of vertical lines include a first vertical line, a second vertical line and a third vertical line, The plurality of horizontal lines include a first horizontal line, a second horizontal line and a third horizontal line. The plurality of vertical connection lines include a first vertical connection line, a second vertical connection line and a third vertical connection line. The plurality of horizontal connection lines include a first horizontal connection line, a second horizontal connection line and a third horizontal connection line. wherein the first vertical connection line is connected to a first side of a third substrate among the plurality of third substrates and the first vertical line, wherein the second vertical connection line is connected to the first side of the third substrate among the plurality of third substrates and the second vertical line, wherein the third vertical connection line is connected to the first side of the third substrate among the plurality of third substrates and the third vertical line, wherein the first horizontal connection line is connected to a second side of the third substrate of the plurality of third substrates adjacent to the first side of the third substrate and the first horizontal line, wherein the second horizontal connection line is connected to the second side of the third substrate among the plurality of third substrates and the second horizontal line, and The third horizontal connection line is connected to the second side of the third substrate among the plurality of third substrates and the third horizontal line.

6. The display device according to claim 5, wherein: A cross-insulation layer and a bridge layer are sequentially arranged under the first vertical line and the second vertical line and the first horizontal line and the second horizontal line, wherein the first vertical connection line is connected between the first side of the third substrate among the plurality of third substrates and the first vertical line, and the bridge layer does not exist between the first side of the third substrate and the first vertical line, The second vertical connection line is connected between the first side of the third substrate among the plurality of third substrates and the first side of the bridge layer below the first vertical line, and between the second side of the bridge layer below the first vertical line and the second vertical line. The third vertical connection line is connected between the first side of the third substrate among the plurality of third substrates and the first side of the bridge layer below the first vertical line, between the second side of the bridge layer below the first vertical line and the first side of the bridge layer below the second vertical line, and between the second side of the bridge layer below the second vertical line and the third vertical line. wherein the first horizontal connection line is connected between the second side of the third substrate among the plurality of third substrates and the first horizontal line, and the bridge layer does not exist between the second side of the third substrate and the first horizontal line, wherein the second horizontal connection line is connected between the second side of the third substrate among the plurality of third substrates and the third side of the bridge layer below the first horizontal line and between the fourth side of the bridge layer below the first horizontal line and the second horizontal line, and Among them, the third horizontal connecting line is connected between the second side of the third substrate among the multiple third substrates and the third side of the bridging layer below the first horizontal line, between the fourth side of the bridging layer below the first horizontal line and the third side of the bridging layer below the second horizontal line, and between the fourth side of the bridging layer below the second horizontal line and the third horizontal line.

7. The display device according to claim 5, wherein: A cross-insulating layer is disposed below the first vertical line, the second vertical line, and the third vertical line and on the first horizontal line, the second horizontal line, and the third horizontal line, wherein the first vertical connection line is connected to the first side of the third substrate among the plurality of third substrates and is connected to the first vertical line through a first contact hole in the cross-insulating layer, wherein the second vertical connection line is connected to the first side of the third substrate among the plurality of third substrates and is connected to the second vertical line through a second contact hole in the cross-insulating layer, wherein the third vertical connection line is connected to the first side of the third substrate among the plurality of third substrates and is connected to the third vertical line through a third contact hole in the cross-insulating layer, wherein the first horizontal connection line is connected to the second side of the third substrate among the plurality of third substrates and is connected to the first horizontal line through a fourth contact hole in the cross-insulating layer; wherein the second horizontal connection line is connected to the second side of the third substrate among the plurality of third substrates and is connected to the second horizontal line through a fifth contact hole in the cross-insulating layer; The third horizontal connection line is connected to the second side of the third substrate among the plurality of third substrates and is connected to the third horizontal line through a sixth contact hole in the cross-insulation layer.

8. The display device according to claim 1, wherein: The plurality of third substrates include a plurality of rigid section groups, each rigid section group having four third substrates arranged in two rows and two columns, Wherein, the plurality of vertical lines are arranged between two rigid part groups adjacent to each other along the first direction; The plurality of horizontal lines are arranged along the second direction between two rigid portion groups adjacent to each other.

9. The display device according to claim 8, wherein: The plurality of third substrates include first-first pixels, first-second pixels, first-third pixels, first-fourth pixels, second-first pixels, second-second pixels, second-third pixels, second-fourth pixels, third-first pixels, third-second pixels, third-third pixels, third-fourth pixels, fourth-first pixels, fourth-second pixels, fourth-third pixels, and fourth-fourth pixels in four rows and four columns, wherein the first-first pixel, the first-second pixel, the second-first pixel and the second-second pixel constitute a first rigid portion group, the first-third pixel, the first-fourth pixel, the second-third pixel and the second-fourth pixel constitute a second rigid portion group, the third-first pixel, the third-second pixel, the fourth-first pixel and the fourth-second pixel constitute a third rigid portion group, and the third-third pixel, the third-fourth pixel, the fourth-third pixel and the fourth-fourth pixel constitute a fourth rigid portion group, wherein the plurality of vertical lines are arranged at a first side of the first rigid portion group and the third rigid portion group, between the first rigid portion group and the third rigid portion group and the second rigid portion group and the fourth rigid portion group, and at a second side of the second rigid portion group and the fourth rigid portion group, the first side and the second side are opposite to each other, and Wherein, the multiple horizontal lines are arranged at the third side of the first rigid part group and the second rigid part group, between the first rigid part group and the second rigid part group and the third rigid part group and the fourth rigid part group, and at the fourth side of the third rigid part group and the fourth rigid part group, and the third side and the fourth side are opposite to each other.

10. The display device according to claim 9, wherein: The multiple vertical lines connect: the plurality of vertical lines at first sides of the first-first pixel, the second-first pixel, the third-first pixel, and the fourth-first pixel and the first sides of the first rigid section group and the third rigid section group, the second sides of the first-second pixel, the second-second pixel, the third-second pixel, and the fourth-second pixel, and the plurality of vertical lines between the first rigid section group and the third rigid section group, and between the second rigid section group and the fourth rigid section group, first sides of the first-third pixels, the second-third pixels, the third-third pixels, and the fourth-third pixels, and the plurality of vertical lines between the first rigid section group and the third rigid section group, and between the second rigid section group and the fourth rigid section group, and the plurality of vertical lines at the second sides of the first to fourth pixels, the second to fourth pixels, the third to fourth pixels, and the fourth to fourth pixels and the second sides of the second rigid section group and the fourth rigid section group, and Wherein, the plurality of horizontal connection lines connect: the plurality of horizontal lines at the third sides of the first-first pixel, the first-second pixel, the first-third pixel, and the first-fourth pixel and the third sides of the first rigid section group and the second rigid section group, the fourth sides of the second-first pixel, the second-second pixel, the second-third pixel and the second-fourth pixel and the plurality of horizontal lines between the first rigid section group and the second rigid section group and between the third rigid section group and the fourth rigid section group, the third sides of the third-first pixel, the third-second pixel, the third-third pixel, and the third-fourth pixel, and the plurality of horizontal lines between the first rigid section group and the second rigid section group, and between the third rigid section group and the fourth rigid section group, and The plurality of horizontal lines at fourth sides of the fourth-first pixel, the fourth-second pixel, the fourth-third pixel, and the fourth-fourth pixel and the fourth sides of the third rigid portion group and the fourth rigid portion group.

11. The display device according to claim 8, wherein: The plurality of light emitting diodes are disposed at corners of the rigid portion group.

12. The display device according to claim 11, wherein: The plurality of third substrates include first-first pixels, first-second pixels, second-first pixels, and second-second pixels arranged in two rows and two columns, and Wherein, the multiple light-emitting diodes are arranged at a first corner where the first side and the third side of the first-first pixel intersect, at a second corner where the second side and the third side of the first-second pixel intersect, at a third corner where the first side and the fourth side of the second-first pixel of the second-first pixel intersect, and at a fourth corner where the second side and the fourth side of the second-second pixel of the second-second pixel intersect.

13. The display device according to claim 12, wherein: A first gap distance between two adjacent light emitting diodes among the plurality of light emitting diodes and a second gap distance between another two adjacent light emitting diodes among the plurality of light emitting diodes are the same as each other.

14. A display device, comprising: a base substrate having a first material; a plurality of unit substrates, the plurality of unit substrates being located on the first surface of the base substrate, the plurality of unit substrates being spaced apart from each other and each having a second material different from the first material; a plurality of signal lines, each of the plurality of signal lines extending along a first direction and between a first unit substrate and a second unit substrate of the plurality of unit substrates, the first unit substrate and the second unit substrate being adjacent to each other in a second direction intersecting the first direction; as well as A plurality of first connection lines each connects one signal line among the plurality of signal lines to the first unit substrate.

15. The display device according to claim 14, wherein: The plurality of signal lines are not connected to the second unit substrate. 16 . The display device according to claim 14 , comprising a plurality of second connection lines each connecting one of the plurality of signal lines to the second unit substrate.

17. The display device according to claim 14, wherein: The Young's modulus value of the second material is equal to or greater than 1000 times the Young's modulus value of the first material.

18. A display structure, comprising: Basic substrate; a unit substrate, the unit substrate being located on the base substrate, the base substrate extending beyond the unit substrate from each side of the unit substrate, the unit substrate comprising a circuit unit; a first signal line, the first signal line being located on the base substrate and spaced apart from the unit substrate; as well as A connection line is connected between the circuit unit and the first signal line, and the connection line extends along a side wall of the unit substrate and exceeds the unit substrate toward the first signal line.

19. The display structure according to claim 18, further comprising: a second signal line, the second signal line being located between the first signal line and the unit substrate and spaced apart from both the first signal line and the unit substrate; an insulating layer, the insulating layer being located below the second signal line; as well as a bridging layer, the bridging layer being located below the insulating layer, The connecting line is connected to the first signal line via the bridge layer, and the connecting line is insulated from the second signal line by the insulating layer.

20. The display structure according to claim 18, further comprising: a second signal line, the second signal line being located between the first signal line and the unit substrate and spaced apart from both the first signal line and the unit substrate; an insulating layer, the insulating layer being located below the second signal line, the insulating layer comprising a hole, The connecting line extends below the insulating layer and is connected to the first signal line through the hole.

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