GB2566069A - Electrical switch based on flexible substrates - Google Patents

Electrical switch based on flexible substrates Download PDF

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Publication number
GB2566069A
GB2566069A GB1714088.0A GB201714088A GB2566069A GB 2566069 A GB2566069 A GB 2566069A GB 201714088 A GB201714088 A GB 201714088A GB 2566069 A GB2566069 A GB 2566069A
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GB
United Kingdom
Prior art keywords
substrate
conducting layer
electrical switch
gap
paper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB1714088.0A
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GB201714088D0 (en
Inventor
Ali Moazzam
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saralon GmbH
Original Assignee
Saralon GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saralon GmbH filed Critical Saralon GmbH
Priority to GB1714088.0A priority Critical patent/GB2566069A/en
Publication of GB201714088D0 publication Critical patent/GB201714088D0/en
Publication of GB2566069A publication Critical patent/GB2566069A/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H27/00—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
    • H01H27/04—Insulating plug or plate inserted between normally closed contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support

Landscapes

  • Push-Button Switches (AREA)

Abstract

An electrical switch 400 comprises first and second substrates 410,420 separated by a gap 411, wherein a first surface 410a of the first substrate faces a second surface 420b of the second substrate. A third substrate 430 in the gap is made of plastics and/or paper, and is folded at a third edge 433 to separate it into first and second parts 431,432, which are configured to respectively touch the first surface 410a and the second surface 420b. First and second conducting layers 461,462 are provided on the first surface 410a and a third conducing layer is provided on the first part 431, which electrically connects the first and second conducting layers. The insertion of a fourth substrate 440 breaks the electrical contact of the first, second and third conducting layers, and the subsequent removal of the fourth substrate allows electrical contact to be re-established. At least one of the first, second, and fourth substrates may be made of plastics, paper, textiles, or any combination thereof. A cut 470 may be provided in a first edge 436 connecting the first and second substrates to allow insertion of the fourth substrate. A fifth substrate 450 may connect the first and fourth substrates. All substrates may be formed of a single substrate.

Description

TITLE
Electrical switch based on flexible substrates
CROSS-RELATION TO OTHER APPLICATIONS [0001] None
FIELD OF THE INVENTION [0002] The present disclosure relates to electrical switches based on flexible substrates, more specifically paper or plastic.
BACKGROUND OF THE INVENTION
Electrical switches are known in the state-of-the-art for centuries. Most of the known electrical switches are high performing and/or of high cost. These electrical switches are difficult to integrate into paper or plastic based electronics. Paper or plastic based electronics is a new field, in which paper or plastic substrates work as a printed circuit board. One of the main advantage of electronics on paper or plastic is their low cost. Electronic components can be directly printed on paper or plastic substrate or SMD (Surface Mounted Devices) components can be picked and placed on it. SMD based magnetically activated electrical switches are known in literature but they can be expensive, US005796.254A and US0051288.34A. Therefore, there is a need of a low cost electrical switch, produced mainly from paper or plastic. This kind of electrical switch has huge applications in the field of packaging, where packages are made of plastic or paper. For example, opening a paper box can switch on the electrical switch or switch off the electrical switch. It can also be used in numerous other applications where low cost paper or plastic electronics are needed.
SUMMARY OF THE INVENTION [0003] The present invention relates to an electrical switch. The electrical switch is made of mainly plastic or paper materials. The electrical switch comprises a first substrate and a second substrate such that a first surface of the first substrate is facing a second surface of the second substrate. The first substrate is separated from the second substrate by a gap. That gap between the first substrate and the second substrate is maintained by a spacer or an adhesive material. A
-1third substrate is provided in the gap and the third substrate is folded at a third edge. The third edge is separating the third substrate into a first part and a second part. The second part is touching the second surface and the first part is capable to touch the first surface. The third substrate is selected from a group of plastic, paper and combinations thereof. A first conducting layer and a second conducting layer are provided on the first surface. A third conducting layer is provided on the first part such that the third conducting layer is capable to electrically connect the first conducting layer to the second conducting layer. A fourth substrate is provided which is capable to be inserted between the first part and the first substrate. Inserting the fourth substrate between the first part and the first substrate breaks the electrical connection of third conducting layer with at least one of the first conducting layer and the second conducting layer. This turns off the electrical switch. Removing the fourth substrate out, completely or partly, reestablishes the electrical connection of third conducting layer with the first conducting layer and the second conducting layer and hence turns on the electrical switch.
BRIEF DESCRIPTION OF THE DRAWINGS [0004] FIG. 1A is a cross sectional view of an electrical switch in its on-state, in accordance with an aspect of the present invention.
[0005] FIG. IB is a cross sectional view of an electrical switch in its off-state, in accordance with an aspect of the present invention.
[0006] FIG. 2A is a cross sectional view of an electrical switch in its on-state, in accordance with another aspect of the present invention.
[0007] FIG. 2B is a cross sectional view of an electrical switch in its off-state, in accordance with another aspect of the present invention.
[0008] FIG. 3A is a cross sectional view of an electrical switch in its on-state, in accordance with another aspect of the present invention.
[0009] FIG. 3B is a cross sectional view of an electrical switch in its off-state, in accordance with another aspect of the present invention.
-3[00010] FIG. 4A is a cross sectional view of an electrical switch in its on-state, in accordance with another aspect of the present invention.
[00011] FIG. 4B is a cross sectional view of an electrical switch in its off-state, in accordance with another aspect of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [00012] The invention will now be described in detail. Drawings and examples are provided for better illustration of the invention. It will be understood that the embodiments and aspects of the invention described herein are only examples and do not limit the protector’s scope of the claims in any way. The invention is defined by the claims and their equivalents. It will be understood that features of one aspect or embodiment of the invention can be combined with the feature of a different aspect or aspects and/or embodiments of the invention.
[00013] The present invention is about an electrical switch. Fig. 1A shows a cross section view of an electrical switch 100. The electrical switch 100 comprises a first substrate 110 and a second substrate 120. In a non-limiting aspect, the first substrate 110 and the second substrate 120 are made from paper, plastic, textile or laminate of different materials. The first substrate 110 and the second substrate 120 are separated from each other by a gap 111, such that a first surface 110a of the first substrate 110 is facing a second surface 120b of the second substrate 120. In a non-limiting aspect, the gap 111 is in the range of 10 micrometers to 10 millimeters. The gap 111 can be uniform or can be different at different positions of the first substrate 110 and the second substrate 120. The gap 111 can be maintained by a spacer material 180, which can be paper or plastic. A third substrate 130 is provided in the gap 111. The third substrate 130 is folded at a third edge 133. The third edge 133 is separating the third substrate 130 into two parts, a first part 131 and a second part 132. In a preferred embodiment, the third substrate 130 is made of plastic material. In a further preferred embodiment, the third substrate 130 is made of PET or PEN plastic material, having a thickness in the range of 50 micrometers to 400 micrometers. In another preferred embodiment, the third substrate 130 is made of paper material. The thickness of the paper material can be in the range of 100 micrometers to 500 micrometers. In a preferred embodiment, the third substrate 130 is made of a laminate of different materials. The third substrate 130 is selected in such a way that it should behave as a spring within the gap 111. The second part 132 of the third substrate 130 is touching the second
-4surface 120b of the second substrate 120. The first part 131 of the third substrate 130 is capable to touch the first surface 110a of the first substrate 110.
[00014] A first conducting layer 161 and a second conducting layer 162 are provided on the first surface 110a. In a non-limiting aspect, the first conducting layer 161 and a second conducting layer 162 are produced by printing a conducting ink. In another non-limiting aspect, the first conducting layer 161 and a second conducting layer 162 have a thickness of less than 50 micrometers. The first conducting layer 161 and the second conducting layer 162 are provided on the first surface 110a such that they are not touching each other. The first conducting layer 161 and the second conducting layer 162 can be connected to electrical or electronics device that needs an electrical switch. Electrically shorting the first conducting layer 161 to the second conducting layer 162 switches on the electrical switch 100. A third conducting layer 163 is provided on a surface of the first part 131 such that the third conducting layer 163 is facing the first surface 110a and hence facing the first conducting layer 161 and the second conducting layer 162. In a non-limiting aspect, the third conducting layer 163 is produced by printing a conductive ink on the first part 131. In another non-limiting aspect, the third conducting layer 163 has a thickness of less than 50 micrometers. The third conducting layer 163 is keeping the first conducting layer 161 and the second conducting layer 162 electrically connected that means the electrical switch 100 is in on-state. Because of the spring like nature of the third substrate 130, the third conducting layer 163 is keeping the first conducting layer
161 and the second conducting layer 162 electrically connected. If a fourth substrate 140 is inserted between the first part 131 and the first substrate 110, the first part 131 is lifted up as shown in Fig IB. For clarity, the fourth substrate 140 is shown in Fig. IB to be inserted into the gap 111 from one side only. The fourth substrate 140 can be inserted into the gap 111 from any side. This lifts up the third conducting layer 163 and breaks the electrical connection of the third conducting layer 163 with at least one of the first conducting layer 161 and the second conducting layer 162 and hence turns the electrical switch 100 into off-state. In a non-limiting aspect, the fourth substrate 140 is made of plastic, paper, textile or a laminate of different materials. Removing the fourth substrate 140 out of the gap 111 (completely or partly), causes the first part 131 to return back to its original position. This leads to reestablishment of the electrical connection between the first conducting layer 161 and the second conducting layer
162 through the third conducting layer 163. The first part 131 returns back to its original position because of the spring-like nature of the first part 131 and the second part 132.
[00015] Fig. 2A and Fig 2B show cross sectional views of another embodiment of the electrical switch 200. The electrical switch 200 comprises a first substrate 210 and a second substrate 220. In a non-limiting aspect, the first substrate 210 is made from paper, plastic, textile or laminate of different materials. The first substrate 210 and the second substrate 220 are separated from each other by a gap 211, such that a first surface 210a of the first substrate 210 is facing a second surface 220b of the second substrate 220. The gap 211 can be maintained by a spacer material 280, which can be paper or plastic. A third substrate 230 is provided in the gap 211. The third substrate 230 is folded at a third edge 233. The third edge 233 is separating the third substrate 230 into two parts, a first part 231 and a second part 232. The third substrate 230 is connected to the second substrate 220 at a second edge 235. It means that the second substrate 220 and the third substrate 230 are made of the same piece of the material 290. In a preferred embodiment, the second substrate 220 and the third substrate 230 are made of plastic material. In a further preferred embodiment, the second substrate 220 and the third substrate 230 are made of PET or PEN plastic material, having a thickness in the range of 50 micrometers to 400 micrometers. In another preferred embodiment, the second substrate 220 and the third substrate 230 are made of paper material. The thickness of the paper material can be in the range of 100 micrometers to 500 micrometers. The second part 232 of the third substrate 230 is touching the second surface 220b of the second substrate 220. The first part 231 of the third substrate 230 is capable to touch the first surface 210a of the first substrate 210. A first conducting layer 261 and a second conducting layer 262 are provided on the first surface 210a. The first conducting layer 261 and a second conducting layer 262 are provided on the first surface 210a such that they are not touching each other. A third conducting layer 263 is provided on a surface of the first part 231 such that the third conducting layer is facing the first surface 210a and hence facing the first conducting layer 261 and the second conducting layer 262. The third conducting layer 263 is keeping the first conducting layer 261 and the second conducting layer 262 electrically connected that means the electrical switch 200 is in on-state. Because of the spring-like nature of the third substrate 230, the third conducting layer 263 is keeping the first conducting layer 261 and the second conducting layer 262 electrically connected. If a fourth substrate 240 is inserted into the gap 211 between the first part 231 and the first substrate 210, the first part 231 is lifted up, as shown in Fig 2B. This also lifts up the third conducting layer 263 and hence breaks the electrical connection of the third conducting layer 263 with at least one of the first conducting layer 261 and the second conducting layer 262. This turns off the electrical switch 200. In a non-limiting aspect, the fourth substrate 240 is made of plastic, paper, textile or a laminate of different materials. Removing the fourth substrate 240 out of the
-6gap 211 causes the first part 231 to return back to its original position. This leads to reestablishment of electrical connection between the first conducting layer 261 and the second conducting layer 262 through the third conducting layer 263. The first part 231 returns back to its original position because of the spring-like nature of the first part 231 and the second part
232.
[00016] Fig. 3 A and Fig 3B show cross sectional views of another embodiment of the electrical switch 300. The electrical switch 300 comprises a first substrate 310 and a second substrate 320. The first substrate 310 and the second substrate 320 are separated from each other by a gap 311 such that a first surface 310a of the first substrate 310 is facing a second surface 320b of the second substrate 320. The gap 311 is maintained by a spacer or an adhesive material 280. A third substrate 330 is provided in the gap 311. The third substrate 330 is folded at a third edge 333. The third edge 333 is separating the third substrate 330 into two parts, a first part 331 and a second part 332. The third substrate 330 is connected to the second substrate 320 at a second edge 335. The first substrate 110 is connected to the second substrate 120 at a first edge 336. This means the first substrate 310, the second substrate 320 and the third substrate 330 are made of the same material i.e. a single substrate 390. In a preferred embodiment, the single substrate 390 is made from paper, plastic, textile or laminate of different materials. In a further preferred embodiment, the single substrate 390 is made of PET or PEN plastic material, having a thickness in the range of 50 micrometers to 400 micrometers. In another preferred embodiment, the single substrate 390 is made of paper material. The thickness of the paper material can be in the range of 100 micrometers to 500 micrometers. The second part 332 of the third substrate 330 is touching the second surface 320b of the second substrate 320. The first part 331 of the third substrate 330 is capable to touch the first surface 310a of the first substrate 310. A first conducting layer 361 and a second conducting layer 362 are provided on the first surface 310a. The first conducting layer 361 and the second conducting layer 362 are provided on the first surface 310a such that they are not touching each other. A third conducting layer 363 is provided on a surface of the first part 331 such that the third conducting layer 363 is facing the first surface 310a and hence facing the first conducting layer 361 and the second conducting layer 362. The third conducting layer 363 is keeping the first conducting layer 361 and the second conducting layer 362 electrically connected that means the electrical switch 300 is in on-state. Because of the spring-like nature of the third substrate 330, the third conducting layer 363 is keeping the first conducting layer 361 and the second conducting layer 362 electrically connected. If a fourth substrate 340 is inserted into the gap 311 between the first part 331 and
-7 the first substrate 310, the first part 331 is lifted up as shown in Fig 3B. This also lifts up the third conducting layer 363 and breaks the electrical connection of the third conducting layer 363 with at least one of the first conducting layer 361 and the second conducting layer 362 and hence turns off the electrical switch 300. In a non-limiting aspect, the fourth substrate 340 is made of plastic, paper, textile or a laminate of different materials. Removing the fourth substrate 340 out of the gap 311 (completely or partly) causes the first part 331 to return back to its original position. This leads to reestablishment of the electrical connection between the first conducting layer 361 and the second conducting layer 362 through the third conducting layer 363. The first part 331 returns back to its original position because of the spring-like nature of the first part 331 and the second part 332. In a preferred aspect, the fourth substrate 340 can be inserted into and removed from the gap 311 (completely or partly) via a cut 370 provided on the single substrate 390 at and around the first edge 336.
[00017] Fig. 4A and Fig 4B show cross sectional views of another embodiment of the electrical switch 400. The electrical switch 400 comprises a first substrate 410 and a second substrate 420. The first substrate 410 and the second substrate 420 are separated from each other by a gap 411 such that a first surface 410a of the first substrate 410 is facing a second surface 420b of the second substrate 420. The gap 411 is maintained by a spacer or an adhesive material 480. A third substrate 430 is provided in the gap 411. The third substrate 430 is folded at the third edge 433. The third edge 433 is separating the third substrate 430 into two parts, a first part 431 and a second part 432. The third substrate 430 is connected to the second substrate 420 at a second edge 435. The first substrate 410 is connected to the second substrate 420 at the first edge 436. A fourth substrate 440 is connected to the first substrate 410 through a fifth substrate 450. This means the first substrate 410, the second substrate 420, the third substrate 430, the fourth substrate 440 and the fifth substrate 450 are made of the same material i.e. a single substrate 490. In a preferred embodiment, the single substrate 490 is made from paper, plastic, textile or laminate of different materials. In a further preferred embodiment, the single substrate 490 is made of PET or PEN plastic material, having a thickness in the range of 50 micrometers to 400 micrometers. In another preferred embodiment, the single substrate 490 is made of paper material. The thickness of the paper material can be in the range of 100 micrometers to 500 micrometers. The second part 432 of the third substrate 430 is touching the second surface 420b of the second substrate 420. The first part 431 of the third substrate 430 is capable to touch the first surface 410a of the first substrate 410. A first conducting layer 461 and a second conducting layer 462 are provided on the first surface 410a. The first conducting layer 461 and the second
-8conducting layer 462 are provided on the first surface 410a such that they are not touching each other. A third conducting layer 463 is provided on a surface of the first part 431 such that the third conducting layer is facing the first surface 410a and hence facing the first conducting layer 461 and the second conducting layer 462. The third conducting layer 463 is keeping the first conducting layer 461 and the second conducting layer 462 electrically connected that means the electrical switch 400 is in on-state. Because of the spring-like nature of the third substrate 430, the third conducting layer 463 is keeping the first conducting layer 461 and the second conducting layer 462 electrically connected. If the fourth substrate 440 is inserted into the gap 411 between the first part 431 and the first substrate 410, the first part 431 is lifted up as shown in Fig 4B. This also lifts up the third conducting layer 463 and breaks the electrical connection of the third conducting layer 463 with at least one of the first conducting layer 461 and the second conducting layer 462 and hence turns off the electrical switch 400. Removing the fourth substrate 440 out of the gap 411 (completely or partly), causes the first part 431 to return back to its original position. This leads to reestablishment of electrical connection between the first conducting layer 461 and the second conducting layer 462 through the third conducting layer 463. In a preferred aspect, the fourth substrate 440 can be inserted into and removed from the gap 411 via a cut 470 provided on the single substrate 490 at and around the first edge 436.

Claims (7)

1. An electrical switch (400), comprising:
a first substrate (410) and a second substrate (420), wherein a first surface (410a) of the first substrate (410) facing a second surface (420b) of the second substrate (420), the first substrate (410) is separated from the second substrate (420) by a gap (411);
a third substrate (430) provided in the gap (411), the third substrate (430) folded at a third edge (433), the third edge (433) separating the third substrate (430) into a first part (431) and a second part (432), the second part (432) touching the second surface (420b), the first part (431) capable to touch the first surface (410a), the third substrate (430) is selected from a group of plastic, paper and combinations thereof;
a first conducting layer (461) and a second conducting layer (462) provided on the first surface (410a);
a third conducting layer (463) provided on the first part (431), wherein the third conducting layer (463) capable to electrically connect the first conducting layer (461) to the second conducting layer (462); and a fourth substrate (440) capable to be inserted between the first part (431) and the first substrate (410), wherein inserting the fourth substrate (440) between the first part (431) and the first substrate (410) breaks the electrical connection of third conducting layer (463) with at least one of the first conducting layer (461) and the second conducting layer (462) and hence turns off the electrical switch (400), removing the fourth substrate (440) out establishes the electrical connection of third conducting layer (463) with the first conducting layer (461) and the second conducting layer (462) and hence turns on the electrical switch (400).
2. The electrical switch (400) as claimed in claim 1, wherein at least one of the first substrate (410), the second substrate (420) and the fourth substrate (440) is selected from group of plastic, paper, textile and combinations thereof.
3. The electrical switch (400) as claimed in claim 1, wherein the second substrate (420) connected to the second part (432) of the third substrate (430) at a second edge (435).
4. The electrical switch (400) as claimed in claims 1 and 3, wherein the first substrate (410) connected to the second substrate (420) at a first edge (436).
5. The electrical switch (400) as claimed in claim 4, wherein a cut (470) is provided on the first edge (436) to insert the fourth substrate (440) between the first part (431) and the first substrate (410) and to remove the fourth substrate (440) out.
6. The electrical switch (400) as claimed in claim 5, wherein the first substrate (410) is connected to the fourth substrate (440) by a fifth substrate (450), wherein the first substrate (410), the second substrate (420), the third substrate (430), the fourth substrate (440) and the fifth substrate (450) are made of a single substrate (490).
7. The electrical switch (400) as claimed in claim 1, wherein the thickness of at least one of the first conducting layer (461), the second conducting layer (462) and the third conducting layer (463) is less than 50 micrometers.
GB1714088.0A 2017-09-03 2017-09-03 Electrical switch based on flexible substrates Withdrawn GB2566069A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1714088.0A GB2566069A (en) 2017-09-03 2017-09-03 Electrical switch based on flexible substrates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1714088.0A GB2566069A (en) 2017-09-03 2017-09-03 Electrical switch based on flexible substrates

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GB201714088D0 GB201714088D0 (en) 2017-10-18
GB2566069A true GB2566069A (en) 2019-03-06

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GB1714088.0A Withdrawn GB2566069A (en) 2017-09-03 2017-09-03 Electrical switch based on flexible substrates

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4927787A (en) * 1989-02-09 1990-05-22 Molex Incorporated Unitarily molded electrical connector housing with separable key
US5057824A (en) * 1990-07-30 1991-10-15 Wanderguard, Inc. Electronic apparatus with on-switch to conserve battery before closing switch
US20130097899A1 (en) * 2010-02-11 2013-04-25 Lauren M. Budzar Electronic greeting cards and novelties with moveable elements and manual electronic circuit activation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4927787A (en) * 1989-02-09 1990-05-22 Molex Incorporated Unitarily molded electrical connector housing with separable key
US5057824A (en) * 1990-07-30 1991-10-15 Wanderguard, Inc. Electronic apparatus with on-switch to conserve battery before closing switch
US20130097899A1 (en) * 2010-02-11 2013-04-25 Lauren M. Budzar Electronic greeting cards and novelties with moveable elements and manual electronic circuit activation

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