CN108281428A - A kind of metal wire and flexible display panels - Google Patents

A kind of metal wire and flexible display panels Download PDF

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Publication number
CN108281428A
CN108281428A CN201710011154.4A CN201710011154A CN108281428A CN 108281428 A CN108281428 A CN 108281428A CN 201710011154 A CN201710011154 A CN 201710011154A CN 108281428 A CN108281428 A CN 108281428A
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CN
China
Prior art keywords
layer
metal
mechanics
metal wire
insulating film
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.)
Pending
Application number
CN201710011154.4A
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Chinese (zh)
Inventor
胡坤
蔡世星
刘胜芳
林立
单奇
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.)
Kunshan New Flat Panel Display Technology Center Co Ltd
Kunshan Govisionox Optoelectronics Co Ltd
Kunshan Guoxian Photoelectric Co Ltd
Original Assignee
Kunshan New Flat Panel Display Technology Center Co Ltd
Kunshan Guoxian Photoelectric Co Ltd
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 Kunshan New Flat Panel Display Technology Center Co Ltd, Kunshan Guoxian Photoelectric Co Ltd filed Critical Kunshan New Flat Panel Display Technology Center Co Ltd
Priority to CN201710011154.4A priority Critical patent/CN108281428A/en
Publication of CN108281428A publication Critical patent/CN108281428A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
    • H01L27/12Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
    • H01L27/1214Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
    • H01L27/124Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The present invention provides a kind of metal wires, solving its resistance is influenced by miniature deformation and is changed and the technical problem of its caused circuit stability difference, the embodiment of the present invention additionally provides a kind of flexible display panels, wherein at least one layer of metal layer is made of above-mentioned metal wire, solves the technical issues of its display effect or power consumption are influenced by metal wire miniature deformation.Metal wire provided by the invention, including insulating film, the signal conductor being set to above or below the insulating film and the mechanics fit line for being set to the insulating film below or above, it is provided with through-hole on the insulating film, metal is accommodated in through-hole, the mechanics fit line is connect with signal conductor by the metal ohmic in through-hole.Flexible display panels provided by the invention, including flexible substrate are arranged alternately insulating layer and metal layer in the flexible substrate, and at least one layer of metal layer is made of above-mentioned metal wire.

Description

A kind of metal wire and flexible display panels
Technical field
The present invention relates to display technology fields, and in particular to a kind of metal wire and flexible display panels.
Background technology
Flexible display because of it with high lightness, fine definition, rich in color, response is fast, flexible, easy to carry etc. Advantage is more and more paid close attention to by people, becomes the hot spot of international research.Flexible display generally include display panel and Peripheral circuit for driving display panel, wherein display panel include pel array and metal wire, peripheral circuit and pixel battle array The electric connection of each pixel unit is completed by metal wire in row.However metal wire can be used with flexible display Rolling or being bent and generating deformation in the process, although during small strain, deformation will not cause to be broken and generate and ruin Going out property electricity fails, but elongating or shortening for metal wire also results in its resistance and become larger or reduce, to the stabilization to circuit Property, the display effect of flexible display and power consumption etc. have adverse effect on.
The protective film of industry generally use increase at present, adjusting neutral line position, the methods of making hole comes over the metal lines The ductility of metal wire is improved, but these methods can only reduce the possibility of metal thread breakage, remain difficult to avoid strain to it It is influenced caused by resistance, to be difficult the display effect or power consumption for improving device when by small strain.
Invention content
In view of this, an embodiment of the present invention provides a kind of metal wire, solve its resistance is influenced by miniature deformation And the technical problem of its caused circuit stability difference, the embodiment of the present invention additionally provide a kind of flexible display panels, wherein At least one layer of metal layer is made of above-mentioned metal wire, solves the skill that its display effect or power consumption are influenced by metal wire miniature deformation Art problem.
A kind of metal wire that one embodiment of the invention provides, including insulating film, be set to above or below the insulating film Signal conductor and be set to the mechanics fit line of the insulating film below or above, be provided with through-hole on the insulating film, Metal is accommodated in through-hole, the mechanics fit line is connect with signal conductor by the metal ohmic in through-hole;
Wherein, the transition zone that the metal uniaxial stress is zero is neutral line, the signal conductor and mechanics fit line about Neutral line is in mechanics symmetrical structure;
Wherein, the mechanics fit line is identical as the material of signal conductor, width, thickness and length;
Wherein, the metal wire forms metal layer, and the metal layer includes that signal conductor layer, insulating film layer and mechanics are suitable With layer, wherein the signal conductor forms signal conductor layer, and the insulating film forms insulating film layer, and the mechanics adaptation is linear At mechanics adaptation layer;
Wherein, the signal conductor and mechanics fit line are by copper, aluminium, titanium, molybdenum or copper alloy, aluminium alloy, titanium alloy, molybdenum A kind of material in alloy is made;
Wherein, the signal conductor and/or mechanics fit line pass through chemical vapor deposition method, physical vapour deposition (PVD) work A kind of technique in skill, spin coating proceeding, spraying process or sputtering process is formed;
Wherein, the insulating film includes polyimides, makrolon, polyacrylate, polyetherimide, polyether sulfone, gathers It is one or more in ethylene glycol terephthalate or polyethylene naphthalate;
Wherein, the through-hole is formed by dry etching or wet-etching technology.
A kind of flexible display panels that one embodiment of the invention provides, including flexible substrate, in the flexible substrate alternately Setting insulating layer and metal layer, at least one layer of metal layer are made of the metal wire of any description above;
Wherein, the metal layer includes barrier metal layer and/or Source and drain metal level;The insulating layer includes gate insulation layer, layer Between it is one or more in insulating layer, buffer layer, passivation layer, flatness layer or pixel confining layer.
Metal wire provided in an embodiment of the present invention, by material, width, thickness and length all same, be symmetrically distributed in The signal conductor and mechanics fit line of neutral line upper and lower are formed by connecting, and when the metal wire is by small strain, resistance value is not It can change, to be had an impact to the stability of circuit and the performance of flexible display device, enhance Flexible Displays Display effect of device when by miniature deformation, reduces its power consumption.
Flexible display panels provided in an embodiment of the present invention, one or more layers metal layer therein is by above-mentioned metal wire structure At avoiding its influence generated to flexible display panels display performance in small deformation, improve display effect, reduce work( The loss of rate.
Description of the drawings
Fig. 1 show a kind of structural schematic diagram of metal wire of one embodiment of the invention offer.
Fig. 2 show a kind of structure principle chart of metal wire of one embodiment of the invention offer.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts Example is applied, shall fall within the protection scope of the present invention.
Fig. 1 show a kind of structural schematic diagram of metal wire of one embodiment of the invention offer.As shown in Figure 1, the metal Line includes insulating film 1, signal conductor 2 and mechanics fit line 3, which is set to the top of insulating film 1, and mechanics is suitable Wiring 3 is set to the lower section of insulating film 1, and through-hole 4 is offered on insulating film 1, accommodates metal in through-hole 4, mechanics fit line 3 with Signal conductor 2 is attached by the metal in through-hole 4, forms Ohm connection, certainly, in other embodiments, can also Mechanics fit line 3 is set to the top of insulating film 1 by selection, and signal conductor 2 is set to the lower section of insulating film 1, as long as ensureing letter Number conducting wire 2 and mechanics fit line 3 are respectively at the both up and down of insulating film 1.Then it is distributed in the letter of 1 upper and lower of insulating film Number conducting wire 2 and mechanics fit line 3 can cancel out each other some because by the resistance variations caused by tensile stress/compression, to Strain is improved to a certain extent on being influenced caused by whole metal wire.
The transition zone that the metal uniaxial stress is zero is neutral line, and in an embodiment of the present invention, signal conductor 2 and mechanics are suitable Wiring 3 is in mechanics symmetrical structure about neutral line.It should be appreciated by those skilled in the art neutral line is material in bending process In neither by pulling force, also not by the transition zone of pressure, be for convenience of calculate and propose concept, actually and be not present, so Fail to indicate in Fig. 1.In an embodiment of the present invention, the material of mechanics fit line 3 and signal conductor 2, width, thickness and The items property parameters all same such as length, it is symmetrical that with mechanics fit line 3 mechanics can be realized in the signal conductor 2.In the present invention In one embodiment, which forms signal conductor layer, and insulating film 1 forms insulating film layer, and mechanics fit line 3 forms mechanics Adaptation layer, i.e., a plurality of metal wire can form metal layer, wherein metal layer includes that signal conductor layer, insulating film layer and mechanics are suitable With layer.Metal wire provided in this embodiment when being stressed, above the electricity that is generated by smaller stretching strain of signal conductor 2 Resistive and the mechanics fit line 3 of lower section are because the resistance variations that smaller compressive strain generates can cancel out each other, so that metal Line not will produce electricity variation on the whole, i.e., its resistance will not be influenced by small strain, and then improve circuit Display effect and power consumption when by miniature deformation of stability and flexible display device.It is equally possible that selection will Mechanics fit line 3 is set to the top of insulating film 1, and signal conductor 2 is symmetrically disposed on the lower section of insulating film 1, as long as ensureing signal Conducting wire 2 and mechanics fit line 3 are in the symmetrical position of mechanics centered on neutral line.
It will be specifically described principle based on the technical solution that above-described embodiment provides below.As shown in Fig. 2, h is insulation The thickness of film 1, r is radius of curvature of the neutral line in bending, because signal conductor 2 is equal with the thickness of mechanics fit line 3, and it Thickness all very littles it is negligible, and neutral line is typically in the center on material thickness, thus they with it is neutral The distance of interlayer is equal, can all regard as h/2, then when metal wire is bent downward, the signal conductor 2 of 1 top of insulating film can be by Certain tensile stress, the corresponding stretching strain generated are εt(wherein, ρ is the radius of curvature of neutral line to=y/ ρ=h/2r, and y is to be measured Object is at a distance from neutral interlayer), ratio R/R of resistance and initial resistance0For (1+ εt)2;Correspondingly, below insulating film 1 Mechanics fit line 3 can be by certain compression, and the compressive strain generated is εc=y/ ρ=h/2r, resistance and initial resistance Ratio R/R0For (1- εc)2.Because of parameters such as material, width, thickness and the length of signal conductor 2 and mechanics fit line 3 It is all identical and formed Ohm connection, then whole metal wire in response to the ratio for becoming the resistance and initial resistance value generated into:
Because of εtc, and for small strain, εt、εc0 is may approximately equal to, then R/R0≈ 1 is that is, equal by each property parameters , whole metal wire that the signal conductor 2 for being symmetrically distributed in neutral line upper and lower and mechanics fit line 3 are formed by connecting by When small strain, resistance value can't change, to be produced to the stability of circuit and the performance of flexible display device It is raw to influence, display effect of flexible display device when by miniature deformation is enhanced, its power consumption is reduced.
It, can be by copper, aluminium, titanium, molybdenum or copper alloy, aluminium alloy, titanium for the material of signal conductor 2 and mechanics fit line 3 A kind of material in alloy, molybdenum alloy is made.For the width, thickness and length of signal conductor 2 and mechanics fit line 3, Concrete numerical value can do different set according to different needs, as long as ensureing the parameters phase of signal conductor 2 and mechanics fit line 3 Deng the present invention is not specifically limited this.For the preparation method of signal conductor 2 and mechanics fit line 3, chemistry can be used Any one of gas-phase deposition, physical gas-phase deposition, spin coating proceeding, spraying process or sputtering process technique, two Same technique had both can be used in person, and different technique can also be used and prepared, the present invention is not specifically limited this.
For the generation type of through-hole 4, in an embodiment of the present invention, etching method can be used, for example, dry etch process Or wet-etching technology, and metal is accommodated in through-hole 4, then signal conductor 2 and mechanics fit line 3 can be by through-holes 4 Metal forms Ohm connection.
For the material of insulating film 1, in an embodiment of the present invention, polyimides, makrolon, polypropylene may be selected It is one or more in acid esters, polyetherimide, polyether sulfone, polyethylene terephthalate or polyethylene naphthalate Material.
One embodiment of the invention additionally provides a kind of flexible display panels, which includes flexible substrate, should In flexible substrate alternately be provided with insulating layer and metal layer, wherein at least one layer of metal layer by any description above metal wire It constitutes.For insulating layer, it may include in gate insulation layer, interlayer insulating film, buffer layer, passivation layer, flatness layer or pixel confining layer It is one or more, material may be selected one or more in silica, silicon nitride, silicon oxynitride, aluminium oxide or titanium oxide. The present invention is not specifically limited the number of plies and material of insulating layer.For metal layer or one or more layers, the present invention couple The number of plies of metal layer is also not specifically limited.In addition, when flexible display panels include more metal layers, can select therein One layer is made of above-mentioned metal wire, other metal layers still use metal wire in the prior art, and multilayer or all also may be selected Layer is all made of above-mentioned metal wire and is made, and is used for example as barrier metal layer and/or Source and drain metal level etc..
For the preparation method of flexible display panels, prepare flexible substrate first, if on directly preparing on flexible substrates It states metal wire and forms metal layer (such as grid layer), then reserved location on substrate is needed to pass through chemical vapor deposition method, object Physical vapor deposition technique, spin coating proceeding, spraying process or sputtering process prepare mechanics fit line 3, the then shape of a plurality of mechanics fit line 3 At mechanics adaptation layer.Prepare insulating film layer on substrate again, by etching technics formation through-hole 4 in insulating film layer, and Metal is accommodated in through-hole 4.Signal conductor 2 is prepared on the reserved location of insulating film layer again, similarly, signal conductor 2 can also lead to Cross any one work in chemical vapor deposition method, physical gas-phase deposition, spin coating proceeding, spraying process or sputtering process Skill is formed, and signal conductor 2 can select to join with attributes such as 3 material having the same of mechanics fit line, width, thickness and length Number, then a plurality of signal conductor 2 forms signal conductor layer.Mechanics fit line 3 and signal conductor 2 are passed through into the gold in through-hole 4 again Belong to carry out Ohm connection, then mechanics adaptation layer, insulating film layer and signal conductor layer just form metal layer, the metal layer i.e. by Above-mentioned a plurality of metal wire is constituted.Insulating layer and other metal layers alternately are prepared successively on the metal layer again, as previously mentioned, its His metal layer can be selected preparation method similar to the above and prepare, and existing preparation method can also be used and formed.If by above-mentioned reality When applying the metal wire described in example as other metal layer (such as Source and drain metal levels) for forming display panel, it is with Source and drain metal level Example then needs the position reserved on polysilicon semiconductor layer thereunder to prepare mechanics fit line 3, then in polysilicon semiconductor Insulating film layer is prepared on layer and opens up through-hole 4, is accommodated metal, is then prepared signal conductor 2 in the reserved location of insulating film layer, then The signal conductor 2 can be connect by the metal in through-hole 4 with mechanics fit line 3 by form metal wire, a plurality of metal wire, that is, structure At Source and drain metal level.
Flexible display panels provided in this embodiment and preparation method thereof, one or more layers metal layer therein by material, Width, thickness and length all same, mechanics is symmetrically distributed in the signal conductor of neutral line upper and lower and mechanics fit line connects Metal wire made of connecing is constituted, and the resistance of the metal wire can't change in miniature deformation, so as to avoid to flexibility The influence of display panel display performance improves its display effect in miniature deformation, reduces the loss of power.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention Within god and principle, made by any modification, equivalent replacement etc., should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of metal wire, which is characterized in that including insulating film, the signal conductor being set to above or below the insulating film with And it is set to the mechanics fit line of the insulating film below or above, it is provided with through-hole on the insulating film, is accommodated in through-hole Metal, the mechanics fit line are connect with signal conductor by the metal ohmic in through-hole.
2. metal wire according to claim 1, which is characterized in that the transition zone that the metal uniaxial stress is zero is neutral Layer, the signal conductor and mechanics fit line are in mechanics symmetrical structure about neutral line.
3. metal wire according to claim 2, which is characterized in that material, the width of the mechanics fit line and signal conductor Degree, thickness and length are identical.
4. metal wire according to claim 1, which is characterized in that the metal wire forms metal layer, the metal layer packet Include signal conductor layer, insulating film layer and mechanics adaptation layer, wherein the signal conductor forms signal conductor layer, the insulation Film forms insulating film layer, and the mechanics fit line forms mechanics adaptation layer.
5. metal wire according to claim 1, which is characterized in that the signal conductor and mechanics fit line by copper, aluminium, A kind of material in titanium, molybdenum or copper alloy, aluminium alloy, titanium alloy, molybdenum alloy is made.
6. metal wire according to claim 1, which is characterized in that the signal conductor and/or mechanics passing through of fit line A kind of technique learned in gas-phase deposition, physical gas-phase deposition, spin coating proceeding, spraying process or sputtering process is formed.
7. metal wire according to claim 1, which is characterized in that the insulating film includes polyimides, makrolon, gathers One kind in acrylate, polyetherimide, polyether sulfone, polyethylene terephthalate or polyethylene naphthalate or It is a variety of.
8. metal wire according to claim 1, which is characterized in that the through-hole passes through dry etching or wet-etching technology It is formed.
9. a kind of flexible display panels, including flexible substrate, which is characterized in that be arranged alternately in the flexible substrate insulating layer and Metal layer, at least one layer of metal layer are made of any metal wire of claim 1 to 8.
10. flexible display panels according to claim 9, which is characterized in that the metal layer include barrier metal layer and/or Source and drain metal level;The insulating layer includes gate insulation layer, interlayer insulating film, buffer layer, passivation layer, flatness layer or pixel confining layer In it is one or more.
CN201710011154.4A 2017-01-06 2017-01-06 A kind of metal wire and flexible display panels Pending CN108281428A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110620166A (en) * 2019-08-26 2019-12-27 合肥工业大学 Method for preparing ultra-flexible optical detector on neutral plane with zero stress

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103715171A (en) * 2013-12-24 2014-04-09 京东方科技集团股份有限公司 Conductive metal interconnection wire and manufacturing method thereof
CN105789255A (en) * 2015-01-12 2016-07-20 苹果公司 Flexible Display Panel With Bent Substrate
CN106206613A (en) * 2016-08-24 2016-12-07 昆山工研院新型平板显示技术中心有限公司 A kind of flexible display substrates and preparation method thereof
CN106252380A (en) * 2016-08-31 2016-12-21 上海天马有机发光显示技术有限公司 Flexible display panels and device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103715171A (en) * 2013-12-24 2014-04-09 京东方科技集团股份有限公司 Conductive metal interconnection wire and manufacturing method thereof
CN105789255A (en) * 2015-01-12 2016-07-20 苹果公司 Flexible Display Panel With Bent Substrate
CN106206613A (en) * 2016-08-24 2016-12-07 昆山工研院新型平板显示技术中心有限公司 A kind of flexible display substrates and preparation method thereof
CN106252380A (en) * 2016-08-31 2016-12-21 上海天马有机发光显示技术有限公司 Flexible display panels and device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110620166A (en) * 2019-08-26 2019-12-27 合肥工业大学 Method for preparing ultra-flexible optical detector on neutral plane with zero stress

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Application publication date: 20180713