CN107068648A - A kind of flexible substrate of two-sided " I " type composite construction - Google Patents

A kind of flexible substrate of two-sided " I " type composite construction Download PDF

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Publication number
CN107068648A
CN107068648A CN201710419790.0A CN201710419790A CN107068648A CN 107068648 A CN107068648 A CN 107068648A CN 201710419790 A CN201710419790 A CN 201710419790A CN 107068648 A CN107068648 A CN 107068648A
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CN
China
Prior art keywords
cylinder
substrate
island body
flexible substrate
composite construction
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Pending
Application number
CN201710419790.0A
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Chinese (zh)
Inventor
赵晋生
师明星
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Southwest Jiaotong University
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Southwest Jiaotong University
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Publication date
Application filed by Southwest Jiaotong University filed Critical Southwest Jiaotong University
Priority to CN201710419790.0A priority Critical patent/CN107068648A/en
Publication of CN107068648A publication Critical patent/CN107068648A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/48Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
    • H01L23/488Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
    • H01L23/498Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
    • H01L23/4985Flexible insulating substrates

Abstract

The present invention discloses a kind of flexible substrate of two-sided " I " type composite construction, including substrate, groove, connection cylinder and island body;Equally box formation is arranged in the upper and lower surface of substrate to connection cylinder;Connection cylinder positioned at substrate lower surface and the connection cylinder positioned at upper surface of substrate are in specular;Separated between connection cylinder and connection cylinder by groove;Island body is placed on connection cylinder;The lateral dimension of island body is more than or slightly larger than the lateral dimension of connection cylinder;Separated between the body of Dao Tiyu islands by groove;Electronic device is sticked on the body of island, and the crosslinking conductor of connection of electronic devices is hidden among groove.The present invention not only has under large deformation behavior strains completely isolated effect, significantly extend the service life of electronic device, and electronic device can be attached in both sides simultaneously, the surface utilisation of flexible substrate is increased, so as to meet the two sides flexible electronic device of particular demands.

Description

A kind of flexible substrate of two-sided " I " type composite construction
Technical field
The present invention relates to the technology of flexible extending electronics (Flexible and Stretchable Electronics) A kind of field, and in particular to flexible substrate of two-sided " I " type composite construction.
Background technology
Flexible extending electronics (Flexible and Stretchable Electronics) technology is by electronic component The new electronic technology on flexible extending matrix is fully integrated into the crosslinking conductor of connecting electronic component.With traditional integrated electricity Sub- technology is compared, and key electronic device is exactly integrated on flexible substrate by the characteristics of it is most prominent.Flexible substrate includes various The top layer of soft material, such as plastics with super elastic properties and organism.Flexible substrate replaces conventional rigid substrate, So that the large scale being applied on whole electronic device deforms the substantially all deformation by flexible substrate and is crosslinked conductor Unstability or distortion large deformation are digested outside face, and comparatively core electron component deforms very little.Therefore flexible electronic device Design breaches the limitation of conventional rigid substrate, whole device is being born the same of the deformations such as the tension and compression, folding, distortion of large scale When and keep original function to be basically unchanged.
The applicant is proposed based on flexible substrate knot in Chinese patent application (number of patent application 2017103362864) The matrix design with optimal distortion isolation effect of the space thin-film solar cells device of structureization design, manufacture is a kind of The flexible substrate of " I " type structure, the matrix is realized to be had under the large deformation behavior such as uniaxial tension, biaxial stretch-formed, torsion, bending Complete strain isolating effect, but the flexible substrates for being somebody's turn to do " I " type structure can not meet the flexible electronic device with bilateral structure Demand, it is impossible to reach and matrix surface made full use of, do not meet advanced micro-nano system property miniature to part and densification Requirement.
The content of the invention
The technical problems to be solved by the invention are that the flexible substrate of one side " I " type structure can not be met with bilateral structure Flexible electronic device demand there is provided a kind of flexible substrate of two-sided " I " type composite construction, and add flexible substrate table The electronic device occupation rate in face.
To solve the above problems, the present invention is achieved through the following technical solutions:
A kind of flexible substrate of two-sided " I " type composite construction, as the crosslinking of electronic component and connecting electronic component is led Body synthesizes integrated extending carrier, it is characterised in that equally multiple connecting poles of box formation arrangement are connected to substrate 1 Upper and lower surface, be respectively connected between island body, the island body of same surface connection by vertical and horizontal on each connection cylinder Trench separation come;Positioned at substrate lower surface connection cylinder and its island body with positioned at upper surface of substrate connection cylinder and its Island body is in specular;Lateral dimension of the lateral dimension of island body not less than connection cylinder.
In integrated installation in use, electronic device is sticked on the body of island, the crosslinking conductor of connection of electronic devices is hidden in ditch Among groove.
In such scheme, connection cylinder is in cylinder, square cylinder, rhombus cylinder or other polygon cylinders.
In such scheme, island body is in cylinder, square cylinder, rhombus cylinder or other polygon cylinders.
In such scheme, substrate, connection cylinder and island body are integrated.
In such scheme, matrix, connection cylinder and island body are all hyperelastic flexible polymer.
In such scheme, the ratio between the thickness of island body and the thickness of substrate are 0.25~1.
In such scheme, the ratio between the thickness of the thickness of island body with being connected cylinder is 0.5~1.5.
In such scheme, the depth of groove and width ratio are 0.6~2 between the body of Dao Tiyu islands.
In such scheme, the depth of groove and width ratio are 0.2~2 between connection cylinder and connection cylinder.
In such scheme, the crosslinking conductor of connection of electronic devices due to outside face unstability large deformation be hidden between groove.
Compared with prior art, the present invention is not only realizing the large deformation row such as uniaxial tension, biaxial stretch-formed, torsion, bending There is the completely isolated effect of strain to be lower so that the large deformation being applied in substrate will not cause the large deformation of electronic device, right Electronic device has protective effect, significantly extends the service life of electronic device, and can attach electricity in both sides simultaneously Sub- device, increases the surface utilisation of flexible substrate, so as to meet the two sides flexible electronic device of particular demands.
Brief description of the drawings
Fig. 1 is a kind of dimensional structure diagram of the flexible substrate of two-sided " I " type composite construction.
Fig. 2 is a kind of sectional view of the flexible substrate of two-sided " I " type composite construction.
Label in figure:10th, substrate;21 and 22 be respectively longitudinal groove and lateral trench;31st, 32 connection cylinder;41st, 42 island Body.
Embodiment
The flexible substrate embodiment of one two-sided " I " type composite construction as depicted in figs. 1 and 2, by substrate 10, is set in length and breadth Multiple grooves, multiple connection cylinders and island body composition.The flexible substrate of composite construction is with good ductility electronic device Basis, substrate 10 plays carrying effect to total, bears the load such as uniaxial tension, biaxial stretch-formed, torsion, bending.Island body It is the integrated platform of electronic device.The lateral dimension of island body (41 and 42 in such as figure) is more than or slightly larger than connection cylinder (as schemed In 31 and lateral dimension 32).Connection cylinder primarily serves the completely isolated effect of strain so that apply big change on the base 1 Shape will not cause the large deformation of electronic device.Between the island body of same surface connection by a plurality of longitudinal groove that is distributed in length and breadth (such as 21) separate with lateral trench (such as 22).Groove is realized in the loading such as uniaxial tension, biaxial stretch-formed, torsion, bending Extension effect.
The composite construction being made up of connection cylinder and island body is distributed in the both sides of substrate, during integrated installation, electronics in mirror image Device can be adhered on the island body of upper surface of substrate, can also be adhered on the island body of substrate lower surface, strained realizing On the premise of full isolation, the two sides flexible electronic device of particular demands is met, the effective area of structural matrix is improved Occupation rate.
It is in cylinder, square cylinder, rhombus cylinder or other polygon cylinders to connect cylinder, of the invention preferred real Apply in example, each connection cylinder is in the square cylinder that the length of side is 400 μm, and equidistant box formation is arranged in the upper surface of substrate And lower surface.Island body is located on connection cylinder, and each island body is in cylinder, square cylinder, rhombus cylinder or other polygon Shape cylinder, in a preferred embodiment of the invention, each island body is in the square cylinder that the length of side is 800 μm.Island body and connection cylinder All opened by trench separation.Substrate, connection cylinder and island body are integral structures, are all made up of hyperelastic flexible polymer, In the preferred embodiment of the present invention, using the PDMS (polydimethylsiloxanes with performances such as corrosion resistance, high light transmittance, super-elasticity The abbreviation of alkane) it is made.
Influence due to substrate to the completely isolated effect of strain of island body is obvious, so the thickness and substrate of island body The ratio between thickness is controlled in the larger context, and such as 0.25~1.In the embodiment of the present invention, the thickness of substrate is 200 μm, island body Thickness is 100 μm.Connect cylinder has obvious influence to the high selectivity of island body, it is further contemplated that the sufficiently thin premise of matrix Under, it is 0.5~1.5 to select the ratio between the thickness of the thickness of island body with being connected cylinder.In the present embodiment, the thickness of connection cylinder is 100μm.Separated between the body of island by groove, and crosslinking conductor needs to be hidden between groove, between the Dao Tiyu islands body on same surface The depth of groove is 0.6~2 with width ratio, and the depth of groove and width ratio are 0.2 between the connection cylinder of same surface connection ~1.
In the present invention, need in advance to stretch the flexible substrate of composite construction when electronic device is installed, it is certain pre- having Integrated-optic device is adhered on the premise of strain, after release prestrain, crosslinking conductor bends to groove due to unstability outside face It is interior, so as to improve the effective area occupation rate of structural matrix.

Claims (10)

1. a kind of flexible substrate of two-sided " I " type composite construction, as by the crosslinking conductor of electronic component and connecting electronic component The integrated extending carrier of synthesis, it is characterised in that equally multiple connecting poles of box formation arrangement are connected to substrate (1) Upper and lower surface, be respectively connected between island body, the island body of same surface connection by vertical and horizontal on each connection cylinder Trench separation come;Connection cylinder and its island body positioned at substrate (1) lower surface and the connecting pole positioned at substrate (1) upper surface Body and its island body are in specular;Lateral dimension of the lateral dimension of island body not less than connection cylinder.
2. the flexible substrate of two-sided " I " the type composite construction of one kind according to claim 1, it is characterised in that connection cylinder It is in cylinder or square cylinder or polygon cylinder.
3. the flexible substrate of two-sided " I " the type composite construction of one kind according to claim 1, it is characterised in that island body (4) is in Cylinder or square cylinder or polygon cylinder.
4. the flexible substrate of two-sided " I " the type composite construction of one kind according to claim 1, it is characterised in that substrate (1), Connection cylinder and island body are integrated.
5. a kind of composite construction flexible substrate towards extending electronics according to claim 1 or 4, it is characterised in that Substrate (1), connection cylinder and island body are all hyperelastic flexible polymer.
6. the flexible substrate of two-sided " I " the type composite construction of one kind according to claim 1, it is characterised in that the thickness of island body The ratio between degree and the thickness of substrate (1) are 0.25~1.
7. the flexible substrate of two-sided " I " the type composite construction of one kind according to claim 1, it is characterised in that the thickness of island body It is 0.5~1.5 to spend the ratio between thickness with being connected cylinder.
8. the flexible substrate of two-sided " I " the type composite construction of one kind according to claim 1, it is characterised in that island body (4) with Gash depth and width ratio between island body (4) are 0.6~2.
9. the flexible substrate of two-sided " I " the type composite construction of one kind according to claim 1, it is characterised in that same surface The gash depth and width ratio connected between cylinder is 0.2~2.
10. a kind of composite construction flexible substrate of flexible extending electronics according to claim 1, it is characterised in that island Body is the square cylinder that the length of side is 800 μm;Cylinder is connected in the square cylinder that the length of side is 400 μm.
CN201710419790.0A 2017-06-06 2017-06-06 A kind of flexible substrate of two-sided " I " type composite construction Pending CN107068648A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109273366A (en) * 2018-07-17 2019-01-25 西南交通大学 A kind of preparation method of " island body-connection cylinder-substrate " structural flexibility matrix

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Publication number Priority date Publication date Assignee Title
CN102202468A (en) * 2006-12-20 2011-09-28 3M创新有限公司 Methods of patterning a deposit metal on a substrate
GB201405081D0 (en) * 2014-03-21 2014-05-07 Nokia Corp Flexible electronics apparatus and associated methods
CN104392904A (en) * 2014-11-21 2015-03-04 河南理工大学 Flexible substrate based extensible conductive film and preparation process
CN106206462A (en) * 2016-09-12 2016-12-07 桂林电子科技大学 A kind of double-faced flexible structural substrate towards extending electronics
US20170040306A1 (en) * 2015-06-30 2017-02-09 Apple Inc. Electronic Devices With Soft Input-Output Components
CN207217521U (en) * 2017-06-06 2018-04-10 西南交通大学 A kind of flexible substrate of two-sided " I " type composite construction

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102202468A (en) * 2006-12-20 2011-09-28 3M创新有限公司 Methods of patterning a deposit metal on a substrate
GB201405081D0 (en) * 2014-03-21 2014-05-07 Nokia Corp Flexible electronics apparatus and associated methods
CN104392904A (en) * 2014-11-21 2015-03-04 河南理工大学 Flexible substrate based extensible conductive film and preparation process
US20170040306A1 (en) * 2015-06-30 2017-02-09 Apple Inc. Electronic Devices With Soft Input-Output Components
CN106206462A (en) * 2016-09-12 2016-12-07 桂林电子科技大学 A kind of double-faced flexible structural substrate towards extending electronics
CN207217521U (en) * 2017-06-06 2018-04-10 西南交通大学 A kind of flexible substrate of two-sided " I " type composite construction

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109273366A (en) * 2018-07-17 2019-01-25 西南交通大学 A kind of preparation method of " island body-connection cylinder-substrate " structural flexibility matrix

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