CN113870695A

CN113870695A - Stretchable display

Info

Publication number: CN113870695A
Application number: CN202110806665.1A
Authority: CN
Inventors: 黄子硕; 谢坤龙
Original assignee: AU Optronics Corp
Current assignee: AU Optronics Corp
Priority date: 2020-08-21
Filing date: 2021-07-16
Publication date: 2021-12-31
Anticipated expiration: 2041-07-16
Also published as: CN113870695B

Abstract

A stretchable display includes a substrate, a plurality of first electronic elements, and a plurality of bridges. The substrate is provided with a first surface, a second surface and a plurality of through holes, wherein 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. The plurality of first electronic elements are arranged on the first surface. The plurality of bridging pieces are arranged on the second surface, each first electronic element is coupled with the plurality of bridging pieces through the plurality of through holes, and the plurality of bridging pieces transmit an electronic signal received by one of the plurality of first electronic elements to another first electronic element coupled with the first electronic element.

Description

Stretchable display

Technical Field

The present invention relates to a stretchable display in which a plurality of first electronic components are coupled to each other using a bridge and a plurality of through holes.

Background

The stretchable display is a fully flexible display which can be folded and stretched in any direction, and is not a unidirectional bend of a common flexible display, so that the size of the stretchable display can be enlarged or reduced according to actual conditions without affecting the display of pictures, and the stretchable display is wider in application, such as a mobile phone, a wearable device or an automobile dashboard.

In the conventional stretchable display, the island regions (island) are connected with each other by using stretchable wires (bridge), the area occupied by the stretchable wires and the island on the plane affects the amount of stretch that the display can bear, and the longer the stretchable wires are, the greater the amount of stretch can be borne. However, the problem of the resolution reduction of the stretchable display after stretching is how to improve the above-mentioned disadvantages, which is a problem to be solved.

In view of the foregoing, the inventor of the present invention has devised and designed a stretchable display to improve the shortcomings of the prior art and further enhance the industrial application.

Disclosure of Invention

In view of the above-mentioned problems, it is an object of the present invention to provide a stretchable display, which solves the problems encountered in the prior art.

In view of the above, the present invention provides a stretchable display, which includes a substrate, a plurality of first electronic elements, and a plurality of bridges. The substrate is provided with a first surface, a second surface and a plurality of through holes, wherein 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. The plurality of first electronic elements are arranged on the first surface. The plurality of bridging pieces are arranged on the second surface, each first electronic element is coupled with the plurality of bridging pieces through the plurality of through holes, and the plurality of bridging pieces transmit an electronic signal received by one of the plurality of first electronic elements to another first electronic element coupled with the first electronic element.

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

In an embodiment of the invention, the substrate has a plurality of grooves on the first surface, and each groove is disposed between each first electronic component, and further, the position of the projection of the groove on the second surface overlaps the position of the bridge.

In an embodiment of the invention, each bridge has a first end and a second end, and the first end and the second end are respectively coupled with two adjacent first electronic components.

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

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

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

In an embodiment of the 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 the through holes and the bridge, and each of the second electronic components is coupled to the plurality of first electronic components of the adjacent second electronic component through the plurality of through holes.

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

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

In summary, in the stretchable display of the present invention, the plurality of bridging units are disposed on the second surface of the substrate, and the plurality of first electronic elements are disposed on the first surface of the substrate, so that the bridging units and the first electronic elements are disposed on different planes, thereby increasing the routing space of the display and improving the tensile strength of the display.

In summary, in the stretchable display of the present invention, the plurality of second electronic elements are disposed in the auxiliary area of the second surface, and the plurality of first electronic elements are collocated, so as to improve the resolution of the display.

Drawings

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 a first embodiment of the stretchable display of the present invention.

Fig. 2A is a side view of a second embodiment of a stretchable display of the present invention.

Fig. 2B is a structural diagram of a second embodiment of the stretchable display of the present invention.

Fig. 3 is a structural view of a third embodiment of the stretchable display of the present invention.

Fig. 4 is a structural view of a fourth embodiment of the stretchable display of the present invention.

Fig. 5A is a side view of a fifth embodiment of a stretchable display of the present invention.

Fig. 5B is a structural view of a fifth embodiment of the stretchable display of the present invention.

Description of reference numerals:

10A, 10B: substrate

20: first electronic component

30A, 30B: bridging piece

40: second electronic component

AS: accommodating area

AR: auxiliary area

E1: first end

E2: second end

GAP: gap

GR: groove

S1: first side

S2: second surface

TH: through hole

Detailed Description

The advantages, features and technical solutions of the present invention will be more readily understood by describing in greater detail exemplary embodiments and the accompanying drawings of the specification, and the invention may be embodied in different forms, and therefore should not be construed as limited to the embodiments set forth herein, but rather should be provided as a complete and complete disclosure set forth herein, which is to be accorded the scope of the invention as defined in the appended claims.

It will be understood that, although the terms first, second, etc. may be used herein 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 or section from another element, component, region, layer or section. Thus, the terms "first element," "first region," "first layer," and/or "first portion" discussed below may be termed "second element," "second region," "second layer," and/or "second portion" without departing from the spirit and teachings of the present invention.

Furthermore, the terms "comprises" and/or "comprising" mean the presence of stated features, regions, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and/or groups thereof.

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

Referring to fig. 1A and 1B, there are shown a side view of a first embodiment of the stretchable display of the present invention and a structural diagram of the first embodiment of the stretchable display of the present invention. As shown in fig. 1A and 1B, the stretchable display of the present invention includes a substrate 10A, a plurality of first electronic elements 20, and a plurality of bridges 30A, for example, the substrate 10A may be a glass substrate, a quartz substrate, a substrate formed of a polymer resin, and the material of the polymer resin may include Polyethersulfone (PES), Polyacrylate (PA), Polyarylate (PAT), Polyetherimide (PEI), polyethylene naphthalate (PEN) 2,6 naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyarylate (polyallylate), Polyimide (PI), Polycarbonate (PC), cellulose triacetate (CAT or TAC), Cellulose Acetate Propionate (CAP), or a combination thereof, and any of the aforementioned materials can be used as the substrate of the stretchable display of the present invention. The substrate 10A has a first face S1, a second face S2, and a plurality of through holes TH, the first face S1 and the second face S2 being disposed opposite to each other, the plurality of through holes TH being disposed between the first face S1 and the second face S2. The plurality of first electronic components 20 are disposed on the first surface S1. The plurality of bridges 30A are disposed on the second surface S2, each of the first electronic components 20 is coupled to the plurality of bridges 30A through the plurality of through holes TH, and the plurality of bridges 30A transmit an electronic signal received by one of the plurality of first electronic components 20 to another of the coupled first electronic components 20.

Wherein, the plurality of first electronic components 20 are disposed separately from each other, that is, the first electronic components 20 are disposed at intervals; the first electronic element 20 may be, for example, a pixel unit, but the first electronic element 20 may also be other electronic elements of the stretchable display, and is not limited to the recited scope of the invention. Each bridge 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, the plurality of first electronic components 20 can transmit electronic signals to each other through the through holes TH and the bridge 30A being electrically connected in pairs; for example, the electronic signal may be a display signal or a control signal, but may also be other types of electronic signals without limiting the scope of the present invention.

Please refer to fig. 2A and 2B, which are a side view of a second embodiment of the stretchable display of the present invention and a structural 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 comprises a substrate 10B, a plurality of first electronic elements 20, and a plurality of bridges 30B, which are similar to the first embodiment, and the description of the similarity is omitted here, but the second embodiment of the present invention is different from the first embodiment, and the differences are: the first electronic elements 20 of the substrate 10B have grooves GR disposed on the first surface S1, and positions of the grooves GR projected on the second surface S2 overlap positions of the bridges 30B, that is, positions of the grooves GR correspond to positions of the bridges 30B. The substrate 10B has a plurality of GAPs GAP on the second surface S2, the position of the GAP projected on the first surface S1 is staggered with respect to the position of the grooves GR, and the GAPs GAP and the grooves GR are provided independently of each other.

In one embodiment, the plurality of bridges 30A may comprise straight lines as shown in fig. 1B. In another embodiment, the plurality of bridges 30B may comprise U-shaped wires as shown in fig. 2B or comprise wave-shaped wires. Of course, the plurality of

bridges

30A and 30B may comprise other shapes of wires according to the actual configuration, and are not limited to the enumerated scope of the present invention.

Please refer to fig. 3, which is a block diagram illustrating a stretchable display according to a third embodiment of the present invention. As shown in fig. 3, the stretchable display of the present invention comprises a substrate 10A, a plurality of first electronic elements 20 and a plurality of bridges 30A, which are similar to the first embodiment and will not be described again, but the third embodiment of the present invention is different from the first embodiment in that: the second side S2 includes an auxiliary area AR, the present invention further includes a second electronic component 40, the second electronic component 40 is disposed in the auxiliary area AR; the first side S1 includes a plurality of receiving areas AS, the receiving areas AS receive the first electronic components 20, a single receiving area AS receives the first electronic components 20, for example, the single receiving area AS receives 3 first electronic components 20, and the plurality of bridges 30A are respectively disposed between the first electronic components 20 in different receiving areas AS. When viewed from the second surface S2 of the substrate 10A to the first surface S1, the auxiliary area AR partially overlaps the positions of the plurality of first electronic components 20, the plurality of first electronic components 20 of the plurality of accommodating areas AS are located around the second electronic component 40, the 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, 1 first electronic component 20 in a single accommodating area AS is adjacent to the auxiliary area AR (i.e., 4 adjacent auxiliary areas AR in the 4 accommodating areas AS), and each first electronic component 20 is coupled to the second electronic component 40 through the through hole TH. 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 component 40 is coupled to the plurality of first electronic components 20 of the adjacent second electronic components 40 through the plurality of through holes TH; in other words, the first electronic component 20 of the receiving area AS transmits the electronic signal to the second electronic component 40 through the through hole TH, and the second electronic component 40 transmits the electronic signal to the first electronic component 20 of the other receiving area AS through the other through hole TH.

Please refer to fig. 4, which is a block diagram illustrating a stretchable display according to a fourth embodiment of the present invention. As shown in fig. 4, the stretchable display of the present invention comprises a substrate 10B, a plurality of first electronic elements 20, a plurality of bridges 30B, and a plurality of grooves GR, which are similar to the second embodiment, and the description of the similar parts is omitted, but the fourth embodiment of the present invention is different from the second embodiment, and its difference: the second side S2 includes an auxiliary area AR, the present invention further includes a second electronic component 40, the second electronic component 40 is disposed in the auxiliary area AR; the plurality of first electronic components 20 are distributed in a plurality of accommodating areas AS, a single accommodating area AS accommodates a plurality of first electronic components 20, grooves GR are formed between the accommodating areas AS, and the plurality of bridge pieces 30B are respectively disposed between the first electronic components 20 of the same accommodating area AS. The fourth embodiment is similar to the third embodiment in that: when viewed from the second surface S2 of the substrate 10A to the first surface S1, the auxiliary area AR partially overlaps the positions of the first electronic elements 20, the first electronic elements 20 are located around the second electronic element 40, the first electronic elements 20 are respectively coupled to the second electronic element 40 through the through holes TH, the electrical relationship between the second electronic element 40 and the first electronic elements 20 and the transmission of electronic signals are similar to the third embodiment, and the description thereof is not repeated. On the contrary, the fourth embodiment is different from the third embodiment in that: the substrate 10B has a plurality of grooves GR on the first surface S1, each groove GR and each bridge 30B are disposed correspondingly, the substrate 10B has a plurality of GAPs GAP on the second surface S2, the grooves GR and the GAPs GAP are disposed separately from each other, since the position of each groove GR projected on the second surface S2 is different from the position of each GAP, the position of a single groove GR projected on the second surface S2 is located between the positions of two GAPs GAP, and the plurality of bridges 30B couple two first electronic components 20 in different accommodating areas AS with each other, so that the positions of the second electronic components 40 are different from the positions of the bridges 30B, thereby determining the position of the second electronic components 40 disposed on the second surface S2.

Referring to fig. 5A and 5B, there are shown a side view of a fifth embodiment of the stretchable display of the present invention and a structural 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 comprises a substrate 10B, a plurality of first electronic elements 20, a plurality of bridges 30B, a plurality of grooves GR, a plurality of GAPs GAP and auxiliary areas AR, which are similar to the fourth embodiment, and the description of the similar parts is omitted, but the fifth embodiment of the present invention is different from the fourth embodiment in that: the number of the second electronic elements 40 is plural, the number of the second electronic elements 40 is smaller than the number of the first electronic elements 20, the second electronic elements 40 are electrically connected to each other, the position of each second electronic element 40 projected on the first surface S1 is staggered from the position of each first electronic element 20, that is, the position of each second electronic element 40 projected on the first surface S1 is partially overlapped with the position of each first electronic element 20; in addition, due to the arrangement of the plurality of second electronic components 40, 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 GAP is formed around the auxiliary region AR, no groove GR exists between the portions of the first electronic components 20 located below the second electronic components 40, and the first electronic components 20 located below the second electronic components 40 are directly electrically connected to the second electronic components 40 through the through holes TH without the bridge 30B. Similarly, each second electronic component 40 is coupled to the plurality of first electronic components 20 of the adjacent second electronic component 40 through the through holes TH, so that each second electronic component 40 can be activated according to the electronic signal. However, the number of the second electronic elements 40 is 9 as shown in fig. 5B, and the number of the first electronic elements 20 is 36, but the number of the first electronic elements 20 and the second electronic elements 40 can be adjusted according to the actual configuration of the stretchable display, and is not limited to the scope set forth in the present invention.

The stress corresponding to the auxiliary area AR is greater than the stress corresponding to the outside of the auxiliary area AR, the strain amount (strain) corresponding to the auxiliary area AR is greater than 5%, and the strain amount corresponding to the outside of the auxiliary area AR is less than 5%. Here, the amount of strain is an amount of change in the principal axis of strain of the present invention caused by applying stress in the horizontal direction and the vertical direction of the present invention, and the amount of strain is an amount of change in the shape of strain. According to the foregoing, the strain amount corresponding to the auxiliary area AR is larger, and the strain amount corresponding to the area outside the auxiliary area AR is smaller, so that the distance between the adjacent first electronic elements 20 is lengthened when the stretchable display of the present invention is stretched, which may cause the resolution of the area where the first electronic elements 20 are located to be reduced, the first electronic elements 20 and the second electronic elements 40 should be disposed in the auxiliary area AR, and the first electronic elements 20 and the second electronic elements 40 may be disposed outside the auxiliary area AR, so as to improve the resolution reduction problem; by the above mechanism, the resolution of the stretchable display of the present invention is significantly increased to meet the current high resolution requirement.

In view of the above, in the stretchable display of the present invention, the plurality of

bridges

30A or 30B are disposed on the second surface S2 of the

substrate

10A or 10B, and the plurality of first electronic elements 20 are disposed on the first surface S1 of the

substrate

10A or 10B, so that the

bridges

30A or 30B and the first electronic elements 20 are located on different planes, thereby increasing the routing space of the display and increasing the tensile strength of the display.

The foregoing is by way of example only, and not limiting. Any equivalent modifications or variations without departing from the spirit and scope of the present invention should be included in the claims.

Claims

1. A stretchable display, comprising:

the substrate is provided with 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 elements arranged on the first surface; and

the plurality of bridging pieces are arranged on the second surface, each first electronic element is coupled with the plurality of bridging pieces through the plurality of through holes, and the plurality of bridging pieces transmit an electronic signal received by one of the plurality of first electronic elements to the other coupled first electronic element.

2. The stretchable display of claim 1, wherein the plurality of first electronic elements are disposed apart from each other.

3. The stretchable display of claim 1, wherein a plurality of grooves are formed on the first surface of the substrate, and each of the grooves is disposed between each of the first electronic elements, and further wherein the position of the groove projected on the second surface overlaps the position of the bridge.

4. The stretchable display of claim 1, wherein each of the bridges 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.

5. The stretchable display of claim 1, wherein the plurality of bridges comprise U-shaped or undulating conductive lines.

6. The stretchable display of claim 1, wherein the second side comprises an auxiliary area, the stretchable display further comprising a plurality of second electronic elements disposed in the auxiliary area and electrically connected to each other.

7. The stretchable display of claim 6, wherein the first face comprises a plurality of receiving areas, the plurality of receiving areas receiving the plurality of first electronic components.

8. The stretchable display of claim 7, wherein if the auxiliary region partially overlaps the plurality of first electronic components, the first electronic components located in different accommodating regions are electrically connected to each other through the through holes and the bridge, and each of the second electronic components is coupled to a plurality of first electronic components adjacent to the second electronic component through the through holes.

9. The stretchable display of claim 6, wherein the stress corresponding to the auxiliary region is greater than the stress corresponding to outside the auxiliary region.

10. The stretchable display of claim 6, the auxiliary region corresponding to a strain amount greater than 5% and the auxiliary region outside corresponding to a strain amount less than 5%.