TWI779573B - Stretchable display - Google Patents

Abstract

A stretchable display includes a substrate, a plurality of first electronic devices and a plurality of bridges. The substrate is provided with a first face, a second face and a plurality of through holes. The first face and the second face are on the two relative sides of the substrate. The plurality of through holes are disposed between the first face and the second face. The plurality of first electronic devices are disposed on the first face. The plurality of bridges are disposed on the second face. Each first electronic device utilizes the plurality of through holes to couple with the plurality of bridges. The plurality of bridges sends an electrical signal which is emitted by the one of the plurality of first electronic devices to the another electronic first device who is coupled with the first electronic device which emits the electrical signal.

Description

stretchable display

The present invention relates to a stretchable display that couples a plurality of first electronic components to each other by using bridges and a plurality of through holes.

The stretchable display is a fully flexible display that can be folded and stretched in any direction, rather than the single-direction bending of general flexible displays. Therefore, the size of the stretchable display can be expanded or reduced according to the actual situation without affecting the image quality. Display, making it more widely used in applications, such as mobile phones, wearable devices or car dashboards.

Existing stretchable displays use stretchable bridges to connect islands to each other. The area occupied by the stretchable bridges and islands on the plane affects the amount of stretch the display can withstand. The longer the stretch trace, the greater the amount of stretch it can withstand. However, stretchable displays have a problem of reduced resolution after being stretched, and how to improve the aforementioned deficiency has become a problem to be solved.

In view of the foregoing, the inventor of the present invention conceived and designed a stretchable display in order to improve the deficiencies of the conventional technology, and further enhance the implementation and utilization in the industry.

In view of the above known problems, the purpose of the present invention is to provide a stretchable display to solve the problems faced in the prior art.

Based on the above purpose, the present invention provides a stretchable display, which includes a substrate, a plurality of first electronic components and a plurality of bridges. The substrate has a first surface, a second surface and a plurality of through holes, the first surface and the second surface are oppositely arranged, and the plurality of through holes are arranged between the first surface and the second surface. A plurality of first electronic components are arranged on the first surface. A plurality of bridges are arranged on the second surface, and each first electronic component is coupled to the plurality of bridges through a plurality of through holes, and the plurality of bridges transmits the electronic signal received by one of the plurality of first electronic components to the other coupled a first electronic component.

In an embodiment of the present invention, the plurality of first electronic components are arranged separately from each other.

In an embodiment of the present invention, there are a plurality of grooves on the first surface of the substrate, and each groove is arranged between each first electronic component, and furthermore, the position of the projection of the groove on the second surface overlaps that of the bridge member. Location.

In an embodiment of the present invention, each bridging member has a first end and a second end, and the first end and the second end are respectively coupled to two adjacent first electronic components.

In an embodiment of the present invention, the plurality of bridging elements comprise U-shaped or wave-shaped wires.

In an embodiment of the present invention, the second surface includes an auxiliary area, and the stretchable display further includes a plurality of second electronic components, and the plurality of second electronic components are disposed in the auxiliary area and electrically connected to each other.

In an embodiment of the present invention, the first surface includes a plurality of accommodating areas, and the plurality of accommodating areas accommodate a plurality of first electronic components.

In an embodiment of the present invention, if the auxiliary area partially overlaps the positions of the plurality of first electronic components, the first electronic components located in different accommodating areas are electrically connected to each other through through holes and bridges, and the second electronic components The component is coupled to a plurality of first electronic components adjacent to the second electronic component through a plurality of through holes.

In an embodiment of the present invention, the stress corresponding to the auxiliary region is greater than the corresponding stress outside the auxiliary region.

In an embodiment of the present invention, the amount of strain corresponding to the auxiliary area is greater than 5%, and the amount of strain corresponding to outside the auxiliary area is less than 5%.

Based on the above, in the stretchable display of the present invention, a plurality of bridges are arranged on the second surface of the substrate, and a plurality of first electronic components are arranged on the first surface of the substrate, so that the bridges and the first electronic components are in different positions. On the plane, thereby increasing the wiring space of the display and improving the tensile strength of the display.

Based on the above, in the stretchable display of the present invention, a plurality of second electronic components are arranged in the auxiliary area of the second surface, together with a plurality of first electronic components, so as to improve the resolution of the display.

The advantages, features and technical methods achieved by the present invention will be described in more detail with reference to exemplary embodiments and accompanying drawings to make it easier to understand, and the present invention can be implemented in different forms, so it should not be understood as being limited to what is shown here The stated embodiments, on the contrary, for those skilled in the art, the provided embodiments will make the present disclosure more thorough and comprehensive and completely convey the scope of the present invention, and the present invention will be only the appended The scope of the patent application is defined.

It should be understood that although the terms "first", "second" and the like may be used in the present invention to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections Should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer and/or section from another element, component, region, layer and/or section. Accordingly, "first element", "first component", "first region", "first layer" and/or "first portion" discussed below may be referred to as "second element", "second component" , "second region", "second layer" and/or "second part", without departing from the spirit and teachings of the present invention.

In addition, the terms "comprising" and/or "comprising" refer to the presence of stated features, regions, integers, steps, operations, elements and/or parts, but do not exclude one or more other features, regions, integers, steps, operations , the presence or addition of elements, parts and/or combinations thereof.

Unless otherwise defined, all terms (including technical and scientific terms) used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted to have definitions consistent with their meanings in the context of the relevant art and the present invention, and will not be interpreted as idealistic or overly formal unless otherwise expressly defined herein.

Please refer to FIG. 1A and FIG. 1B , which are the side view of the first embodiment of the stretchable display of the present invention and the structure diagram of the first embodiment of the stretchable display of the present invention. As shown in Figure 1A and Figure 1B, the stretchable display of the present invention includes a substrate 10A, a plurality of first electronic components 20 and a plurality of bridges 30A, for example, the substrate 10A can be a glass substrate, quartz The substrate, the substrate formed by polymer resin, the material of polymer resin may include polyethersulfone (polyethersulfone, PES), polyacrylate (polyacrylate, PA), polyarylate (polyarylate, PAT), polyetherimide ( Polyetherimide, PEI), polyethylene 2,6 naphthalate (polyethylene naphthalate, PEN), polyethylene terephthalate (PET), polyphenylene sulfide (polyphenylene sulfide, PPS), polyarylic acid Polyallylate, polyimide (PI), polycarbonate (PC), cellulose triacetate (CAT or TAC), cellulose acetate propionate (CAP) ), or a composition thereof, and substrates of the aforementioned materials can be applied to the stretchable display of the present invention. The substrate 10A has a first surface S1 , a second surface S2 and a plurality of through holes TH, the first surface S1 and the second surface S2 are oppositely disposed, and the plurality of through holes TH are disposed between the first surface S1 and the second surface S2 . A plurality of first electronic components 20 are disposed on the first surface S1. A plurality of bridges 30A are disposed on the second surface S2, and each first electronic component 20 is coupled to a plurality of bridges 30A through a plurality of through holes TH, and a plurality of bridges 30A transfer electrons received by one of the plurality of first electronic components 20 The signal is transmitted to another coupled first electronic component 20 .

Wherein, a plurality of first electronic components 20 are arranged separately from each other, that is, each first electronic component 20 is arranged at intervals from each other; the first electronic component 20 can be, for example, a pixel unit, and of course the first electronic component 20 can also be a stretchable display other electronic components, but not limited to the scope of the present invention. Each bridge member 30A has a first end E1 and a second end E2, and the first end E1 and the second end E2 are respectively coupled to two adjacent first electronic components 20 through the through holes TH, that is, a plurality of first electronic components 20 The elements 20 are electrically connected to each other through the through hole TH and the bridge member 30A so as to transmit electronic signals to each other; for example, the electronic signal can be a display signal or a control signal, and of course it can also be other types of electronic signals, and is not limited to The stated scope of the present invention.

Please refer to FIG. 2A and FIG. 2B , which are the side view of the second embodiment of the stretchable display of the present invention and the structure diagram of the second embodiment of the stretchable display of the present invention. As shown in FIG. 2A and FIG. 2B, the stretchable display of the present invention includes a substrate 10B, a plurality of first electronic components 20 and a plurality of bridge members 30B, and its configuration relationship is similar to that of the first embodiment, here The similarities will not be described again, but the second embodiment of the present invention is still different from the first embodiment, the difference: there is a groove GR between the first electronic components 20 of the substrate 10B, and the groove GR Located on the first surface S1 , the position of the groove GR projected on the second surface S2 overlaps the position of the bridge member 30B, that is, the position of the groove GR corresponds to the position of the bridge member 30B. The substrate 10B has a plurality of gaps GAP on the second surface S2, and the positions of the projections of the gaps GAP on the first surface S1 are offset from the positions of the grooves GR, and the gaps GAP and the grooves GR are arranged independently of each other.

In one embodiment, the plurality of bridge members 30A may include straight wires as shown in FIG. 1B . In another embodiment, the plurality of bridging elements 30B may include U-shaped wires or wave-shaped wires as shown in FIG. 2B . Of course, the plurality of bridging elements 30A and 30B may include wires of other shapes according to actual configurations, and are not limited to the enumerated scope of the present invention.

Please refer to FIG. 3 , which is a structural diagram of a third embodiment of the stretchable display of the present invention. As shown in Figure 3, the stretchable display of the present invention includes a substrate 10A, a plurality of first electronic components 20 and a plurality of bridges 30A, and its configuration relationship is similar to that of the first embodiment, so it will not be repeated here. Describe the similarities, but the third embodiment of the present invention is still different from the first embodiment, the difference: the second surface S2 includes the auxiliary area AR, and the present invention further includes the second electronic component 40, the second electronic component 40 is disposed in the auxiliary area AR; the first surface S1 includes a plurality of accommodating areas AS, the plurality of accommodating areas AS accommodates a plurality of first electronic components 20, and a single accommodating area AS accommodates a plurality of first electronic components 20, For example, a single accommodating area AS accommodates three first electronic components 20 , and a plurality of bridging elements 30A are respectively disposed between the first electronic components 20 in different accommodating areas AS. When viewed from the second surface S2 of the substrate 10A toward the first surface S1, the auxiliary area AR partially overlaps the positions of the plurality of first electronic components 20, and the plurality of first electronic components 20 in the plurality of accommodating areas AS are located in the second Around the electronic component 40, a plurality of first electronic components 20 are respectively coupled to the second electronic component 40 through the through holes TH. For example, 4 accommodating areas AS accommodate 12 first electronic components 20, and a single accommodating One first electronic component 20 in the area AS is adjacent to the auxiliary area AR (that is, there are 4 adjacent auxiliary areas AR in the 4 accommodating areas AS), and each first electronic component 20 is coupled to the second electronic component 20 through the through hole TH. Electronic components 40. In the third embodiment, the first electronic components 20 located in different accommodating areas AS are electrically connected to each other through the through holes TH and the bridges 30A, and the second electronic components 40 are coupled to the adjacent first electronic components through a plurality of through holes TH. Multiple first electronic components 20 of the second electronic component 40; The hole TH transmits the electronic signal to the first electronic component 20 in another accommodating area AS.

Please refer to FIG. 4 , which is a structural diagram of a fourth embodiment of the stretchable display of the present invention. As shown in FIG. 4, the stretchable display of the present invention includes a substrate 10B, a plurality of first electronic components 20, a plurality of bridges 30B and a plurality of grooves GR, and its configuration relationship is similar to that of the second embodiment. The similarities will not be described again here, but the fourth embodiment of the present invention still has a difference from the second embodiment, the difference: the second surface S2 includes the auxiliary region AR, and the present invention further includes the second electronic component 40, the second electronic component 40 is arranged in the auxiliary area AR; a plurality of first electronic components 20 are distributed in a plurality of accommodating areas AS, and a single accommodating area AS accommodates many first electronic components 20, between each accommodating area AS With the groove GR, a plurality of bridging members 30B are respectively disposed between the first electronic components 20 in the same accommodating area AS. Among them, the fourth embodiment has similarities with the third embodiment, which is: when viewed from the second surface S2 of the substrate 10A toward the first surface S1, the auxiliary region AR partially overlaps the plurality of first electronic components 20 Position, a plurality of first electronic components 20 are located around the second electronic component 40, a plurality of first electronic components 20 are respectively coupled to the second electronic component 40 through and through holes TH, the second electronic component 40 and the first electronic component The electrical relationship and electronic signal transmission of 20 are similar to those of the third embodiment, and will not be repeated here. On the contrary, the difference between the fourth embodiment and the third embodiment is that the substrate 10B has a plurality of grooves GR on the first surface S1, and each groove GR is correspondingly provided with each bridging member 30B. The two surfaces S2 have multiple gaps GAP, and the groove GR and the gap GAP are arranged separately from each other. Since the positions of the projections of each groove GR on the second surface S2 are different from the positions of each gap GAP, a single groove GR is projected on the second surface. The position of S2 is located between the positions of the two gaps GAP, and the plurality of bridging members 30B are used to couple the two first electronic components 20 in different accommodating areas AS to each other, so the positions of the second electronic components 40 are different from The position of each bridging member 30B further determines the position of the second electronic component 40 disposed on the second surface S2.

Please refer to FIG. 5A and FIG. 5B, which are the side view of the fifth embodiment of the stretchable display of the present invention and the structure diagram of the fifth embodiment of the stretchable display of the present invention. As shown in FIG. 5, the stretchable display of the present invention includes a substrate 10B, a plurality of first electronic components 20, a plurality of bridges 30B, a plurality of grooves GR, a plurality of gaps GAP, and an auxiliary region AR. The configuration relationship is similar to that of the fourth embodiment, and the similarities will not be repeated here, but the fifth embodiment of the present invention is still different from the fourth embodiment, the difference: the number of the second electronic components 40 is Multiple, the number of the plurality of second electronic components 40 is less than the number of the plurality of first electronic components 20, the plurality of second electronic components 40 are electrically connected to each other, and each second electronic component 40 is projected on the position of the first surface S1 and The positions of the first electronic components 20 are staggered, that is, the positions of the projections of the second electronic components 40 on the first surface S1 partially overlap the positions of the first electronic components 20; set, and in order to couple the first electronic component 20 to the second electronic component 40, the positions of the plurality of grooves GR and the plurality of gaps GAP are changed, specifically, the auxiliary region AR has a gap GAP around the second There is no groove GR between the part of the first electronic component 20 below the electronic component 40 , and the first electronic component 20 below the second electronic component 40 is directly electrically connected to the second electronic component 40 through the through hole TH without the bridge 30B. Similarly, each second electronic component 40 is coupled to a plurality of first electronic components 20 adjacent to the second electronic component 40 through the through hole TH, so that each second electronic component 40 can act according to an electronic signal. However, the number of the second electronic components 40 is 9 as shown in Figure 5B, and the number of the first electronic components 20 is 36, but according to the actual configuration of the stretchable display, the number of the first electronic components 20 and the second electronic components 40 The number can be adjusted accordingly, but not limited to the scope of the present invention.

Wherein, the stress corresponding to the auxiliary region AR is greater than the corresponding stress outside the auxiliary region AR, the strain corresponding to the auxiliary region AR is greater than 5%, and the strain corresponding to the outside of the auxiliary region AR is less than 5%. It should be noted that the amount of strain here is the amount of change in the principal axis of strain of the present invention caused by applying stress in the horizontal and vertical directions of the present invention, and the amount of strain is the amount of change in the shape of the strain. According to the above, the amount of strain corresponding to the auxiliary region AR is relatively large, and the amount of strain corresponding to the outside of the auxiliary region AR is relatively small. Therefore, when the stretchable display of the present invention is stretched, the adjacent first electronic components 20 are stretched apart from each other. long, which may cause a decrease in the resolution of the area where the first electronic component 20 is located, the first electronic component 20 and the second electronic component 40 should be installed in the auxiliary area AR, and the first electronic component 20 can be installed outside the auxiliary area AR. By arranging the first electronic component 20 and the second electronic component 40 in the auxiliary area AR, the problem of resolution degradation is improved; through the aforementioned mechanism, the resolution of the stretchable display of the present invention is significantly increased to meet the current high-resolution requirements. need.

Based on the above, in the stretchable display of the present invention, a plurality of bridge members 30A or 30B are arranged on the second surface S2 of the substrate 10A or 10B, and a plurality of first electronic components 20 are arranged on the first surface of the substrate 10A or 10B S1, make the bridge 30A or 30B and the first electronic component 20 on different planes, thereby increasing the wiring space of the display and improving the tensile strength of the display, and the stretchable display of the present invention can be applied to wearable electronic products , mobile phones, and car dashboards.

The above descriptions are illustrative only, not restrictive. Any equivalent modification or change made without departing from the spirit and scope of the present invention shall be included in the scope of the appended patent application.

10A, 10B: substrate 20: The first electronic component 30A, 30B: bridge piece 40: Second electronic component AS: accommodation area AR: auxiliary area E1: first end E2: second end GAP: gap GR: Groove S1: the first side S2: Second side TH: through hole

FIG. 1A is a side view of a first embodiment of a stretchable display of the present invention. FIG. 1B is a structural diagram of the first embodiment of the stretchable display of the present invention. FIG. 2A is a side view of a second embodiment of the stretchable display of the present invention. FIG. 2B is a structural diagram of the second embodiment of the stretchable display of the present invention. Fig. 3 is a structural diagram of the third embodiment of the stretchable display of the present invention. FIG. 4 is a structural view of the fourth embodiment of the stretchable display of the present invention. FIG. 5A is a side view of a fifth embodiment of the stretchable display of the present invention. FIG. 5B is a structural diagram of a fifth embodiment of the stretchable display of the present invention.

10A: Substrate

20: The first electronic component

30A: bridge piece

E1: first end

E2: second end

S1: the first side

S2: Second side

TH: through hole

Claims (9)

A stretchable display, comprising: a substrate having a first surface, a second surface and a plurality of through holes, the first surface and the second surface are oppositely arranged, and the plurality of through holes are arranged on the first Between the surface and the second surface; a plurality of first electronic components disposed on the first surface; and a plurality of bridges disposed on the second surface, each of the first electronic components coupled through the plurality of through holes The plurality of bridges, the plurality of bridges transmits an electronic signal received by one of the plurality of first electronic components to another coupled one of the plurality of first electronic components, wherein each of the bridges has a A first end and a second end, the first end and the second end are respectively coupled to two adjacent ones of the plurality of first electronic components. The stretchable display according to claim 1, wherein the plurality of first electronic components are separated from each other. The stretchable display as claimed in claim 1, wherein there are a plurality of grooves on the first surface of the substrate, and each of the grooves is arranged between each of the first electronic components, and further the plurality of grooves The position of the groove projected on the second surface overlaps the positions of the plurality of bridge pieces. The stretchable display as claimed in claim 1, wherein the plurality of bridges comprise U-shaped or wave-shaped wires. The stretchable display according to claim 1, wherein the second surface includes an auxiliary area, the stretchable display further includes a plurality of second electronic components, and the plurality of second electronic components are arranged in the auxiliary area and mutually electrical connection. The stretchable display according to claim 5, wherein the first surface includes a plurality of accommodating areas, and the plurality of accommodating areas accommodate the plurality of first electronic components. In the stretchable display as described in claim 6, if the auxiliary area partially overlaps the positions of the plurality of first electronic components, one of the plurality of first electronic components located in different accommodating areas passes through the plurality of One of the through holes and one of the plurality of bridge members are electrically connected to each other, and each of the second electronic components is coupled to a plurality of the first electronic components adjacent to the plurality of second electronic components through the plurality of through holes . The stretchable display as claimed in claim 5, wherein the stress corresponding to the auxiliary region is greater than the corresponding stress outside the auxiliary region. In the stretchable display according to claim 5, the strain corresponding to the auxiliary area is greater than 5%, and the strain outside the auxiliary area is less than 5%.

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