TWI774466B - Stretchable display module - Google Patents

Abstract

A stretchable display module includes a conductive substrate and a plurality of pixel units. The conductive substrate includes a substrate and a circuit layer formed on the substrate. The substrate has a plurality of predetermined areas, and the circuit layer defines a conductive contact group and at least one elastic wire structure connected to the conductive contact group in each of the predetermined areas. The elastic wire structure includes at least one patterned wire segment, and a stretch rate thereof in a length direction of the substrate is from 0% to 60%. The pixel units are respectively located in the predetermined areas, and each thereof is bonded to the conductive contact group of the corresponding predetermined area.

Description

stretchable display module

The invention relates to a display module, in particular to a stretchable display module.

Displays can transmit various kinds of information in real time in the form of text, images, images, etc., and are one of the electronic products commonly used by people in daily life. With the development of electronic information technology, the application fields of displays are becoming wider and wider. In addition to portable electronic devices such as smart phones, tablet computers, etc., there are also wearable electronic devices such as electronic skins.

In the prior art, a substrate of a flexible material is used to replace a substrate of a rigid material, so that the display can be bent or stretched, thereby increasing the convenience of use and operation. However, such displays not only fail to protect the metal wires from damage from bending or tensile stress, but also cannot suppress impedance changes caused by bending or stretching the metal wires.

The technical problem to be solved by the present invention is to provide a stretchable display screen module in view of the deficiencies of the prior art, which can be stretched and deformed while ensuring the display effect.

In order to solve the above technical problems, one of the technical solutions adopted by the present invention is to provide a stretchable display screen module, which includes a conductive substrate and a plurality of pixel units. The conductive substrate includes a substrate and a circuit layer, the substrate has a plurality of predetermined areas, the circuit layer is formed on the substrate, and a conductive contact group and at least one conductive contact group are defined in each of the predetermined areas. an elastic wire structure connected with the conductive contact group. The elastic wire structure has at least one patterned line segment, and the stretch rate of the elastic wire structure along a length direction of the substrate is 0% to 60%. A plurality of pixel units are respectively located in a plurality of the predetermined areas, wherein each of the pixel units is fixed on the conductive contact group in the predetermined area.

In an embodiment of the present invention, the stretchable display screen module further includes one or more control units, and the control units are electrically connected to the plurality of pixel units through the conductive substrate.

In an embodiment of the present invention, a control unit is built in each of the pixel units.

In an embodiment of the present invention, the patterned line segment has at least one first curved portion and at least one second curved portion connected, and the curvature of the first curved portion is smaller than the curvature of the second curved portion.

In an embodiment of the present invention, the curvature of the first curved portion is 0.1 mm to 10 mm, and the curvature of the second curved portion is 0.5 mm to 15 mm.

In an embodiment of the present invention, the patterned line segment has a plurality of hollow pattern units, and the plurality of hollow pattern units are connected to each other and linearly arranged along the length direction of the substrate. The shape of each of the hollow pattern units is N-sided, and N is a positive integer greater than or equal to 3.

In an embodiment of the present invention, the conductive substrate further includes an elastic conductive layer, and the elastic conductive layer is formed on the circuit layer.

In an embodiment of the present invention, the elastic conductive layer is formed of a conductive composition. Based on 100 wt % of the conductive composition, the conductive composition comprises 45 wt % to 65 wt % of a conductive material selected from the group consisting of gold, palladium, platinum, nickel, copper, copper-clad silver, graphene and carbon nanotubes.

In an embodiment of the present invention, each of the hollow pattern units includes a plurality of corner portions and a plurality of straight edge portions, and there is one straight edge portion between any two adjacent corner portions. The elastic conductive layer includes a plurality of elastic conductive structures, and each of the plurality of corner portions of the hollow pattern unit has an elastic conductive structure respectively.

In an embodiment of the present invention, each of the hollow pattern units includes a plurality of corner portions and a plurality of straight edge portions, and there is one straight edge portion between any two adjacent corner portions. The elastic conductive layer includes a plurality of elastic conductive structures, and each of the plurality of straight edge portions of each of the hollow pattern units has an elastic conductive structure respectively.

In an embodiment of the present invention, the overlap ratio between each of the corner portion or the straight edge portion and the corresponding elastic conductive structure is 5% to 50%.

In an embodiment of the present invention, the conductive substrate further includes an elastic conductive layer, the elastic conductive layer is formed on the circuit layer, and includes a plurality of elastic conductive structures. The patterned line segment has a plurality of solid pattern units and a plurality of bridge units, a plurality of the solid pattern units are separated from each other by a distance and linearly arranged along the length direction of the substrate, and any two adjacent ones of the The solid pattern units are electrically connected through one of the elastic conductive structures. The shape of each of the solid pattern units is N-sided, and N is a positive integer greater than or equal to 3.

One of the beneficial effects of the present invention is that the stretchable display screen module of the present invention can pass through "the elastic wire structure has at least one patterned line segment, and the elastic wire structure is along a length of the substrate. 0% to 60% of the direction of the technical feature, to reduce or even eliminate the structural weakness of the wire, which greatly reduces the risk of wire breakage during stretching, and allows the wire to have good tensile recovery performance and electrical stability (small impedance change in the stretched state).

Furthermore, the stretchable display module of the present invention can withstand a certain degree of stretching force and bending tension in the dimension of length or thickness, and even if it is stretched or bent during use, it can still be normal. Play a role. Therefore, the stretchable display screen module of the present invention can adapt to different three-dimensional structures, and the display effect will not be negatively affected.

For a further understanding of the features and technical content of the present invention, please refer to the following detailed descriptions and drawings of the present invention. However, the drawings provided are only for reference and description, and are not intended to limit the present invention.

The following are specific specific examples to illustrate the embodiments of the "stretchable display screen module" disclosed in the present invention, and those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are merely schematic illustrations, and are not drawn according to the actual size, and are stated in advance. The following embodiments will further describe the related technical contents of the present invention in detail, but the disclosed contents are not intended to limit the protection scope of the present invention. In addition, the term "or", as used herein, should include any one or a combination of more of the associated listed items, as the case may be.

Unless otherwise defined, the terms used in the present invention have the meanings commonly understood by those skilled in the art. The materials used in the following examples are commercially available materials unless otherwise specified. The operations or instruments used in the following examples are common operations or instruments in the art unless otherwise specified. The ratios, contents, etc. described in the following examples are by weight unless otherwise specified.

[First Embodiment]

Please refer to FIG. 1 , which shows the main structure of the stretchable display screen module P of the present invention. As shown in FIG. 1 , the stretchable display screen module P mainly includes a conductive substrate Z, a plurality of pixel units E and one or more control units U, and the plurality of pixel units E are arranged on the conductive substrate Z, preferably It is arranged in an array on the conductive substrate Z, and one or more control units U are electrically connected to the plurality of pixel units E through the conductive substrate Z. In use, one or more control units U can control the plurality of pixel units E, so that each of the plurality of pixel units E produces a target light-emitting effect. It is worth mentioning that in the presence of the conductive substrate Z, the stretchable display module P can withstand a certain degree of stretching force and bending tension in the dimension of length or thickness, even if stretching occurs during use. Or bending deformation can also function normally, so the display effect of the stretchable display module P will not be negatively affected.

Next, the details of the conductive substrate Z and the pixel unit E and the connection relationship between them will be described in conjunction with other drawings.

In this embodiment, the conductive substrate Z mainly includes a substrate 1 and a first circuit layer 2 . The substrate 1 has a plurality of predetermined regions 100 , which serve as the setting regions of the plurality of pixel units E, and the first circuit layer 2 is formed on the substrate 1 . A conductive contact group 21 and at least one elastic wire structure 22 connected to the conductive contact group 21 are defined in each predetermined area 100 . In practical application, the conductive contact group 21 may include a plurality of conductive contacts 211 as a connection interface and/or a signal transmission interface of the pixel unit E; the conductive contacts 211 may exist in the form of contact pads, but not limited thereto. It should be noted that the number and distribution positions of the conductive contacts 211 and the elastic wire structures 22 in each predetermined area 100 are not particularly limited, and can be adjusted and designed according to actual needs.

It is worth mentioning that the elastic wire structure 22, as a signal transmission line, has at least one patterned line segment 221, so that it has good tensile recovery performance, and can withstand a certain degree of tensile deformation, even if it is stretched, it will only cause tiny The impedance changes of ; after testing, the stretch rate of the elastic wire structure 22 along a length direction of the substrate 1 is 0% to 60%.

In practical applications, the substrate 1 can be an elastic substrate with bendable and stretchable properties. 2 is formed on the first surface 101 of the substrate 1 . In practical application, the materials of the substrate 1 may include: polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), polyimide (PI) and Polycarbonate (PC); Materials for the first circuit layer 2 include metals with good electrical conductivity such as gold, silver, and copper, and their alloys. However, the present invention is not limited to the above-mentioned examples.

Please refer to FIG. 2 , which shows one of the wire designs on the conductive substrate Z. Furthermore, as shown in FIG. 2 , the patterned line segment 221 of the elastic wire structure 22 has at least one first curved portion 221A and at least one second curved portion 221B connected, wherein the curvature of the first curved portion 221A is smaller than that of the second curved portion 221A. The curvature of the curved portion 221B, and the curved direction of the first curved portion 221A is different from the curved direction of the second curved portion 221B. Preferably, the curvature of the first curved portion 221A is 0.1 mm to 10 mm, that is, the movable stretch margin of the first curved portion 221A is small, and the curvature of the second curved portion 221B is 0.5 mm to 15 mm, that is, the first curved portion 221B has a curvature of 0.5 mm to 15 mm. The movable stretch margin of the two curved portions 221B is relatively large. With such a structural design, the structural weakness of the wire can be reduced or even eliminated, thereby greatly reducing the risk of the wire breaking during the stretching process, and the wire can have good tensile recovery performance and electrical stability (tensile state). the impedance change is very small). It should be noted that when the number of the first curved portion 221A and the number of the second curved portion 221B is two or more, their arrangement is not particularly limited; for example, two first curved portions 221A and the two second curved portions 221B may be arranged in an ABAB or ABBA manner to form the patterned line segment 221 .

Please refer to FIG. 3 and FIG. 4 together, one of the structures of the pixel unit E is shown. As shown in FIG. 3 , the pixel unit E may adopt an RGB configuration, that is, the pixel unit E includes a red light-emitting element E1 , a green light-emitting element E2 and a blue light-emitting element E3 . The red light emitting element E1 is used for emitting red light, the green light emitting element E2 is used for emitting green light, and the blue light emitting element E3 is used for emitting blue light; the red light emitting element E1, the green light emitting element E2 and the blue light emitting element E3 can each emit light Light Emitting Diode (LED), Organic Light Emitting Diode (OLED), Micro Light Emitting Diode (Micro LED) or Quantum Dot Light Emitting Diode, QLED). In addition, the control unit U may be a drive control wafer, but is not limited thereto. It should be noted that the number, color and arrangement of the light-emitting elements are not particularly limited, and can be adjusted and designed according to actual needs. In some embodiments, the pixel unit E may adopt an RGBW configuration, or the pixel unit E may be a single light-emitting element.

In practical application, as shown in FIG. 1 and FIG. 4 , the pixel unit E may have four pins L1, L2, L3, L4, the conductive contact group 21 may include four conductive contacts 211, and the four pins L1 , L2 , L3 , and L4 can be connected to the four conductive contacts 211 through conductive bumps respectively. The pin L1 can be the common pin of the red light-emitting element E1, the green light-emitting element E2 and the blue light-emitting element E3, and the corresponding conductive contact 211 can provide a reference electrical signal (such as a reference voltage) through the pin L1 For the red light-emitting element E1, the green light-emitting element E2 and the blue light-emitting element E3; the pins L2, L3 and L4 can be electrically connected to the red light-emitting element E1, the green light-emitting element E2 and the blue light-emitting element E3 respectively, and the remaining three conductive contacts The point 211 can supply a control electrical signal (eg, a control voltage) to the red light-emitting element E1, the green light-emitting element E2, and the blue light-emitting element E3 through the pins L2, L3, and L4, respectively. It should be noted that the number of pins of the pixel unit E is not particularly limited, and can be adjusted and designed according to actual needs.

Please refer to FIG. 5 and FIG. 6 together, another structure of the pixel unit E is shown. As shown in FIG. 5 and FIG. 6 , in the stretchable display screen module P of the present invention, a plurality of control units U can be built in a plurality of pixel units E respectively, that is, each pixel unit E emits only red light. In addition to the element E1, the green light-emitting element E2 and the blue light-emitting element E3, it also includes a control unit U electrically connected to them, wherein the four pins L1, L2, L3, L4 can be respectively electrically connected to the power supply of the control unit U terminal (VDD), ground terminal (GND), signal input terminal (DIN) and signal output terminal (OUT). When in use, the control unit U can respectively drive the red light-emitting element E1, the green light-emitting element E2 and the blue light-emitting element E3 according to the received signal, so that the red light-emitting element E1, the green light-emitting element E2 and the blue light-emitting element E3 each generate a Target glow effect (eg color, brightness).

Please refer to FIG. 7 and FIG. 8 , other possible implementation structures of the conductive substrate Z are shown. As shown in FIG. 7 and FIG. 8 , the stretchable display screen module P of the present invention may further include a second circuit layer 4 to improve the flexibility of circuit layout design. The second circuit layer 4 can be formed on the first surface 101 of the substrate 1 in a manner that avoids the position of the first circuit layer 2 , that is, the second circuit layer 4 and the first circuit layer 2 are mutually on the first surface 101 of the substrate 1 . not overlapping; alternatively, the second wiring layer 4 may be formed on the second surface 102 of the substrate 1 .

Furthermore, the second wiring layer 4 may include a plurality of signal transmission lines 41 for transmitting electrical signals (current signals or voltage signals). It is worth mentioning that the signal transmission line 41 can adopt the wire design described in this embodiment (ie, the patterned line segment 221 has a first curved portion 221A with a smaller curvature and a second curved portion 221B with a larger curvature) to obtain the same or similar technical effects. In practical application, under the architecture shown in FIG. 7 , the second circuit layer 4 may form an electrical connection with the first circuit layer 2 in a direct contact manner. In addition, under the structure shown in FIG. 8 , the second circuit layer 4 can be electrically connected to the first circuit layer 2 through one or more vias (not shown in the figure); A conductive contact 211 can be electrically connected to one of the signal transmission lines 41 through a corresponding via hole.

Although the extension direction of the signal transmission line 41 shown in FIGS. 7 and 8 is parallel to the length direction of the substrate 1 , according to different circuit layout designs, the extension direction of the signal transmission line 41 may also be perpendicular to the length of the substrate 1 . direction.

[Second Embodiment]

Please refer to FIG. 1 again in conjunction with FIGS. 9 and 10 . FIGS. 9 and 10 show another design of wires on the conductive substrate Z. As shown in FIG. As shown in the above figures, in this embodiment, the stretchable display screen module P includes a conductive substrate Z and a plurality of pixel units E, and the conductive substrate Z includes a substrate 1 and a first circuit layer 2. The substrate 1 has a plurality of predetermined areas 100, the first circuit layer 2 is formed on the substrate 1, and a conductive contact group 21 and at least one elastic wire structure connected to the conductive contact group 21 are defined in each predetermined area 100 twenty two. The elastic wire structure 22 has at least one patterned line segment 221 , and the stretch rate of the elastic wire structure 22 along a length direction of the substrate 1 is 0% to 60%. The plurality of pixel units E are respectively located in the plurality of predetermined areas 100 , wherein each pixel unit E is fixed on the conductive contact group 21 in the predetermined area 100 where it is located. The relevant technical details mentioned in the first embodiment are still valid in this embodiment, and are not repeated here in order to reduce repetition. Similarly, the related technical details mentioned in this embodiment can also be applied in the first embodiment.

The main difference between this embodiment and the first embodiment is that the patterned line segment 221 adopts a structural design different from that described in the first embodiment, that is, the patterned line segment 221 has a plurality of hollow pattern units 221C, and a plurality of hollow pattern units 221C. The pattern units 221C are connected to each other and linearly arranged along the length direction of the substrate 1; With such a structural design, the structural weakness of the wire can be reduced or even eliminated, thereby greatly reducing the risk of the wire breaking during the stretching process, and the wire can have good tensile recovery performance and electrical stability (tensile state). the impedance change is very small). It should be noted that the shape of the hollow pattern unit 221C is not particularly limited; for example, as shown in FIG. 9 and FIG. 10 , the shape of the hollow pattern unit 221C may be a quadrangle or a hexagon.

Please refer to FIG. 9 to FIG. 14 , which show the optimized design of the main structure of the conductive substrate Z of the present invention. As shown in FIGS. 11 to 14 , the conductive substrate Z may further include an elastic conductive layer 3 , and the elastic conductive layer 3 is formed on the first circuit layer 2 . Furthermore, the elastic conductive layer 3 includes a plurality of elastic conductive structures 31 , and each hollow pattern unit 221C includes a plurality of corner portions 2211 and a plurality of straight edge portions 2212 , wherein there is a gap between any two adjacent corner portions 2211 One straight edge portion 2212, and a plurality of straight edge portions 2212 may respectively have an elastic conductive structure 31, as shown in FIG. 11 and FIG. 12, or a plurality of corner portions 2211 may respectively have an elastic conductive structure 31, as shown in FIG. 13 and Figure 14. Considering the overall stretching effect and structural adaptability (adapting to different three-dimensional structures), each corner portion 2211 or straight edge portion 2212 and the corresponding elastic conductive structure 31 may have an overlap ratio of 5% to 50%.

Please refer to FIG. 15 and FIG. 16 . In practical applications, the elastic conductive structure 31 may only be covered on the upper surface of the corner portion 2211 or the straight edge portion 2212 , as shown in FIG. 15 , or the elastic conductive structure 31 may be covered not only It covers the upper surface of the corner portion 2211 or the straight edge portion 2212, and also covers the side surface of the corner portion 2211 or the straight edge portion 2212, as shown in FIG. 16 . The above descriptions are only feasible implementations, and are not intended to limit the present invention.

The elastic conductive layer 3 can be formed by a conductive composition (such as conductive paste), the conductive composition can be applied in the form of conductive paste, and the application method can be printing, dispensing, spray printing or transfer printing, but the present invention is not limited to this. The conductive composition mainly comprises 45 wt% to 65 wt% of conductive material (based on 100 wt% of the conductive composition), wherein the conductive material is selected from gold, palladium, platinum, nickel, copper, copper-clad silver, graphene and carbon nanotubes. It should be noted that the shape of the conductive material is not particularly limited, and may be a sheet shape, a spherical shape or a dendritic shape. In practical application, the conductive composition may further comprise 10 wt% to 20 wt% of a binder, 0 wt% to 35 wt% of a solvent, and 0.1 wt% to 3 wt% of a processing aid (based on 100 wt% of the conductive composition).

In some embodiments, the content of the conductive material in the conductive composition may be 45 wt %, 50 wt %, 55 wt %, 60 wt % or 65 wt %; the content of the binder in the conductive composition may be 10 wt % %, 15 wt% or 20 wt%. The content of the solvent in the conductive composition can be 5 wt%, 10 wt%, 15 wt%, 20 wt%, 25 wt%, 30 wt% or 35 wt%; the content of the processing aid in the conductive composition can be 0.5 wt%, 1.0 wt%, 1.5 wt%, 2.0 wt%, 2.5 wt% or 3.0 wt%.

Specific examples of the adhesive include: phenolic resin, epoxy resin, acrylate monomer, polyurethane, diisocyanate, hydroxyethyl methacrylate, acrylonitrile-butadiene-styrene copolymer (ABS), nylon (Nylon ), polylactic acid (PLA), polyether cellulose (PES), ethyl cellulose, hydroxyethyl methyl cellulose and hydroxyethyl cellulose. Specific examples of the solvent include butyl anhydride acetate (BCA), diethylene glycol butyl ether acetate, diethylene glycol ethyl ether acetate, isophorone, N-methylol acrylamide (NMA), diethylene glycol , tetrahydrofuran, polyethylene glycol and glycols (such as butanediol). Specific examples of processing aids include dispersants, leveling agents, antioxidants, and stabilizers. However, the present invention is not limited to the above-mentioned examples.

Please refer to FIG. 7 and FIG. 8 again. Under the structure in which the stretchable display screen module P further includes another second circuit layer 4 , the signal transmission line 41 of the stretchable display screen module P can adopt the wire design (ie the pattern) described in this embodiment The line segment 221 has a plurality of hollow pattern units 221C connected to each other and arranged in a linear manner, so as to obtain the same or similar technical effect.

[Third Embodiment]

Please refer to FIG. 1 again in conjunction with FIG. 17 . FIG. 17 shows yet another design of wires on the conductive substrate Z. As shown in FIG. As shown in the above figures, in this embodiment, the stretchable display screen module P includes a conductive substrate Z and a plurality of pixel units E, and the conductive substrate Z includes a substrate 1 , a first circuit layer 2 and a The elastic conductive layer 3 and the first circuit layer 2 are formed on the substrate 1 , and the elastic conductive layer 3 is formed on the first circuit layer 2 . Furthermore, the substrate 1 has a plurality of predetermined areas 100 , and the first circuit layer 2 defines a conductive contact group 21 and at least one elastic wire structure 22 connected to the conductive contact group 21 in each predetermined area 100 . The elastic wire structure 22 has at least one patterned line segment 221 , and the stretch rate of the elastic wire structure 22 along a length direction of the substrate 1 is 0% to 60%. The plurality of pixel units E are respectively located in the plurality of predetermined areas 100 , wherein each pixel unit E is fixed on the conductive contact group 21 in the predetermined area 100 where it is located. The related technical details mentioned in the first and second embodiments are still valid in this embodiment, and are not repeated here in order to reduce repetition. Similarly, the related technical details mentioned in this embodiment can also be applied in the first embodiment.

The main difference between this embodiment and the first embodiment is that the patterned line segment 221 adopts a structural design different from that described in the first and second embodiments, that is, the patterned line segment 221 has a plurality of solid pattern units 221D, A plurality of solid pattern units 221D are separated from each other by a distance and linearly arranged along the length direction of the substrate 1; In addition, the elastic conductive layer 3 includes a plurality of elastic conductive structures 31 , and any two adjacent solid pattern units 221D are electrically connected through one elastic conductive structure 31 . With such a structural design, the structural weakness of the wire can be reduced or even eliminated, thereby greatly reducing the risk of the wire breaking during the stretching process, and the wire can have good tensile recovery performance and electrical stability (tensile state). the impedance change is very small). It should be noted that the shape of the solid pattern units 221D is not particularly limited, as long as two adjacent solid pattern units 221D can be electrically connected.

Please refer to FIG. 7 and FIG. 8 again. Under the structure in which the stretchable display screen module P further includes another second circuit layer 4 , the signal transmission line 41 of the stretchable display screen module P can adopt the wire design (ie the pattern) described in this embodiment The line segment 221 has a plurality of solid pattern units 221D) which are separated from each other by a distance and are linearly arranged, so as to obtain the same or similar technical effect.

[Advantageous effects of the embodiment]

One of the beneficial effects of the present invention is that the stretchable display screen module of the present invention can pass through "the elastic wire structure has at least one patterned line segment, and the elastic wire structure is along a length of the substrate. 0% to 60% of the direction of the technical feature, to reduce or even eliminate the structural weakness of the wire, which greatly reduces the risk of wire breakage during stretching, and allows the wire to have good tensile recovery performance and electrical stability (small impedance change in the stretched state).

Furthermore, the stretchable display module of the present invention can withstand a certain degree of stretching force and bending tension in the dimension of length or thickness, and even if it is stretched or bent during use, it can still be normal. Play a role. Therefore, the stretchable display screen module of the present invention can adapt to different three-dimensional structures, and the display effect will not be negatively affected.

Furthermore, the stretchable conductive substrate can further include an elastic conductive layer, and the elastic conductive layer can be formed by applying a conductive composition (such as conductive paste) on the circuit layer, which can prevent the metal wires from bending. Or tensile stress damage, and can inhibit the impedance change caused by the metal wire being bent or stretched.

The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, any equivalent technical changes made by using the contents of the description and drawings of the present invention are included in the application of the present invention. within the scope of the patent.

P: electronic products Z: Conductive substrate 1: Substrate 100: Predetermined area 101: First Surface 102: Second Surface 2: circuit layer 21: Conductive contact group 211: Conductive Contacts 22: Elastic wire structure 221: Patterned Line Segments 221A: First bend 221B: Second bending part 221C: Hollow Pattern Unit 2211: Corner part 2212: Straight edge part 221D: Solid Pattern Unit 3: Elastic conductive layer 31: Elastic conductive structure 4: circuit layer 41: Signal transmission line E: electronic device E1: red light-emitting element E2: Green light-emitting element E3: blue light-emitting element L1, L2, L3, L4: pins U: control unit

FIG. 1 is a schematic structural diagram of a stretchable display module of the present invention.

FIG. 2 is a partial enlarged view of part II in FIG. 1 , showing the wire design of the first embodiment of the present invention.

3 is a schematic top view of a perspective view of one of the structures of the pixel unit of the stretchable display screen module of the present invention.

FIG. 4 is a schematic bottom perspective view of one of the structures of the pixel unit of the stretchable display screen module of the present invention.

FIG. 5 is a schematic top plan view of another structure of the pixel unit of the stretchable display screen module of the present invention.

FIG. 6 is a schematic bottom perspective view of another structure of the pixel unit of the stretchable display screen module of the present invention.

FIG. 7 is another schematic structural diagram of the stretchable display screen module of the present invention.

FIG. 8 is another schematic structural diagram of the stretchable display screen module of the present invention.

FIG. 9 and FIG. 10 are partial enlarged views of part II in FIG. 1 , respectively, showing the design of the lead wire according to the second embodiment of the present invention.

FIG. 11 and FIG. 12 are respectively a partial enlarged view of part II in FIG. 1 , showing one of the optimized ways of designing the lead wire according to the second embodiment of the present invention.

FIG. 13 and FIG. 14 are partial enlarged views of part II in FIG. 1 , respectively, showing another optimized way of designing the wire according to the second embodiment of the present invention.

FIG. 15 shows one of the possible implementation aspects of the optimization method of the wire design according to the second embodiment of the present invention.

FIG. 16 shows another implementation aspect of the optimization method of the wire design according to the second embodiment of the present invention.

FIG. 17 is a partial enlarged view of part II in FIG. 1 , showing a wire design according to a third embodiment of the present invention.

P: electronic products

Z: Conductive substrate

1: Substrate

100: Predetermined area

101: First Surface

102: Second Surface

2: circuit layer

21: Conductive contact group

211: Conductive Contacts

22: Elastic wire structure

E: electronic device

U: control unit

Claims (8)

A stretchable display screen module, comprising: a conductive substrate, including: a substrate having a plurality of predetermined areas; and a circuit layer formed on the substrate and defining a definition in each of the predetermined areas A conductive contact group and at least one elastic wire structure connected to the conductive contact group, wherein the elastic wire structure has at least one patterned line segment, and the elastic wire structure is along a length direction of the substrate The stretching ratio is 0% to 60%; the patterned line segment has a plurality of hollow pattern units, a plurality of the hollow pattern units are connected to each other and are linearly arranged along the length direction of the substrate; each of the hollow patterns The shape of the unit is N-sided, and N is a positive integer greater than or equal to 3; and a plurality of pixel units are respectively located in a plurality of the predetermined areas, wherein each of the pixel units is fixed in the predetermined area. on the set of conductive contacts within. The stretchable display screen module according to claim 1, wherein the stretchable display screen module further comprises one or more control units, and the control units are connected to a plurality of control units through the conductive substrate. The pixel units form electrical connections. The stretchable display screen module according to claim 1, wherein each of the pixel units is built with a control unit. The stretchable display screen module according to claim 1, wherein the conductive substrate further comprises an elastic conductive layer, and the elastic conductive layer is formed on the circuit layer. The stretchable display screen module of claim 4, wherein the elastic conductive layer is formed of a conductive composition, and based on 100 wt % of the conductive composition, the conductive composition comprises 45 wt % % to 65wt% of conductive materials selected from gold, palladium, platinum, nickel, copper, copper-clad silver, graphene and carbon nanotubes. The stretchable display screen module according to claim 4, wherein each of the hollow pattern units includes a plurality of corner portions and a plurality of straight edge portions, and between any two adjacent corner portions There is one straight edge portion; wherein, the elastic conductive layer includes a plurality of elastic conductive structures, and each of the plurality of corner portions of the hollow pattern unit has an elastic conductive structure respectively. The stretchable display screen module according to claim 4, wherein each of the hollow pattern units includes a plurality of corner portions and a plurality of straight edge portions, and between any two adjacent corner portions There is one straight edge portion; wherein, the elastic conductive layer includes a plurality of elastic conductive structures, and each of the plurality of straight edge portions of the hollow pattern unit has an elastic conductive structure respectively. The stretchable display screen module according to claim 6 or 7, wherein the overlap ratio between each corner portion or the straight edge portion and the corresponding elastic conductive structure is 5% to 50%. %.

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