CN114189986B - High durable FPC and LCD module - Google Patents
High durable FPC and LCD module Download PDFInfo
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- CN114189986B CN114189986B CN202111474513.2A CN202111474513A CN114189986B CN 114189986 B CN114189986 B CN 114189986B CN 202111474513 A CN202111474513 A CN 202111474513A CN 114189986 B CN114189986 B CN 114189986B
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- 239000000758 substrate Substances 0.000 claims abstract description 164
- 239000002184 metal Substances 0.000 claims abstract description 158
- 229910052751 metal Inorganic materials 0.000 claims abstract description 158
- 238000004080 punching Methods 0.000 claims description 27
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 210000000078 claw Anatomy 0.000 claims description 8
- 230000003044 adaptive effect Effects 0.000 claims description 4
- 238000005452 bending Methods 0.000 abstract description 27
- 230000003068 static effect Effects 0.000 abstract description 4
- 230000002787 reinforcement Effects 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 239000011889 copper foil Substances 0.000 description 9
- 239000010410 layer Substances 0.000 description 9
- 238000007493 shaping process Methods 0.000 description 6
- 238000009713 electroplating Methods 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
- H05K1/147—Structural association of two or more printed circuits at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
- H05K1/148—Arrangements of two or more hingeably connected rigid printed circuit boards, i.e. connected by flexible means
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Structure Of Printed Boards (AREA)
- Combinations Of Printed Boards (AREA)
Abstract
The utility model relates to a high durable FPC and LCD module, wherein main scheme is a high durable FPC, it includes first base plate, two second base plates and is used for carrying out the reinforced structure of reinforcement to junction between first base plate and the second base plate, wherein one side of first base plate simultaneously with one side fixed connection of two second base plates, reinforced structure includes first sheetmetal and second sheetmetal, the length direction of first sheetmetal and second sheetmetal sets up along the width direction of first base plate, the both sides surface of junction between first base plate and the second base plate is hugged closely respectively to first sheetmetal and second sheetmetal, the tip of first sheetmetal and second sheetmetal is connected through the connecting piece. The first metal sheet and the second metal sheet are used for pressing the connection part between the first substrate and the second substrate, so that the connection part between the first substrate and the second substrate is kept static, and the possibility of deformation of the position caused by bending deformation of the second substrate is reduced, and the fracture of the connection position is reduced.
Description
Technical Field
The application relates to the field of LCD screen technology, in particular to a high-durability FPC and an LCD module.
Background
Along with the improvement of living standard of people, demands of people on electronic products are increasing, common electronic products include computers, mobile phones, pad and other products, and the products generally display required pictures through an LCD screen.
The LCD screen of the traditional electronic product is generally connected with an FPC (flexible circuit board), and the FPC has the advantages of free bending, winding, folding and the like, so that the LCD screen is more easily suitable for a narrow space in the electronic product, changes phase to reduce the volume of the electronic product, and is suitable for the development trend of miniaturization and high density of the electronic product nowadays.
The Chinese patent with the bulletin number of CN109714883A discloses a circuit compensation FPC, which comprises a first substrate and two second substrates, the right-hand member and the two second substrates fixed connection of first substrate, the upper and lower both sides of first substrate are all fixed and are equipped with the copper foil layer, two copper foil layer still respectively with two second substrates fixed connection, the surface of two copper foil layer is all fixed and is equipped with the pad, and the surface of two copper foil layer all is carved with electroplating lead wire, the pad is connected with electroplating lead wire, the one end fixedly connected with tip of keeping away from the second substrate of first substrate, the one end of keeping away from the first substrate of two second substrates is equal fixedly connected with flat grafting end.
In view of the above related art, the inventor believes that when the output end of the second substrate is connected to a movable output structure (for example, when the output structure is a tiltable LCD screen), after multiple rotations, the connection point between the second substrate and the first substrate is easy to be damaged by fatigue to break, so as to affect the circuit transmission and have a risk of breaking; even if the connection mode of the second substrate and the first substrate is set to be integrated, the deformation and bending stress of the second substrate is suddenly increased at the connection point due to the different thicknesses of the second substrate and the first substrate, so that the connection point is easily broken.
Disclosure of Invention
In order to improve the durability of the FPC, the application provides a high-durability FPC and an LCD module.
The application provides a high durable FPC adopts following technical scheme:
the utility model provides a high durable FPC, includes first base plate, two second base plates and is used for carrying out the reinforced structure of reinforcement to junction between first base plate and the second base plate, wherein one side of first base plate simultaneously with one side fixed connection of two second base plates, reinforced structure includes first sheetmetal and second sheetmetal, the length direction of first sheetmetal and second sheetmetal sets up along the width direction of first base plate, the both sides surface of junction between first base plate and the second base plate is hugged closely respectively to first sheetmetal and second sheetmetal, and the tip of first sheetmetal and second sheetmetal is passed through the connecting piece and is connected.
Through adopting above-mentioned technical scheme, push down junction between first base plate and the second base plate through first sheetmetal and second sheetmetal for the junction keeps static between first base plate and the second base plate, and then reduces the possibility that leads to this position deformation because of the crooked deformation of second base plate, in order to reduce the fracture of this junction position.
Optionally, the middle parts of the first metal sheet and the second metal sheet along the length direction of the first metal sheet and the second metal sheet are bent in the same direction, and the connection part between the first substrate and the second substrate is subjected to adaptive deformation.
Through adopting above-mentioned technical scheme, laminating design through first sheetmetal and second sheetmetal to carry out deformation design to the junction between first base plate and the second base plate, make the junction between first base plate and the second base plate be curved arcuation, thereby make the junction between first base plate and the second base plate have anti crooked tension, namely the junction between first base plate and the second base plate is tension buffer, and second base plate bending deformation then needs to overcome this tension (break through tension buffer) earlier, consequently limit the bending stress concentration department of second base plate in the position of keeping away from the junction between first base plate and the second base plate to a certain extent, thereby effectively reduce the bending deformation fracture's of junction between first base plate and the second base plate possibility.
Optionally, the first metal sheet and the second metal sheet are bent along a vertical direction to a surface direction of the first substrate to form a wavy structure, and a connection part between the first substrate and the second substrate is subjected to adaptive deformation.
Through adopting above-mentioned technical scheme, laminating design through first sheetmetal and second sheetmetal to carry out deformation design to the junction between first base plate and the second base plate, make the junction between first base plate and the second base plate be wavy, thereby make the junction between first base plate and the second base plate have anti crooked tension, namely the junction between first base plate and the second base plate is tension buffer zone, and second base plate bending deformation then needs to overcome this tension (break through tension buffer zone) earlier, therefore limit the bending stress concentration department of second base plate in the position of keeping away from the junction between first base plate and the second base plate to a certain extent, thereby effectively reduce the bending deformation fracture's of junction between first base plate and the second base plate possibility.
In addition, the connection part between the wavy first substrate and the wavy second substrate has little influence on the deformation degree of other parts of the first substrate or the second substrate, namely other parts of the first substrate and the second substrate can still keep a flat state, and only the tension buffer area is wavy; and secondly, the wavy tension buffer area has larger tension, so that the difficulty of breaking through the tension buffer area when the second substrate bends is greatly increased.
Optionally, the first metal sheet and the second metal sheet are all in wave shape along being parallel to the surface direction of the first substrate, and the wave crest of the first metal sheet along being parallel to the surface direction of the first substrate and the wave trough of the second metal sheet along being parallel to the surface direction of the first substrate are symmetrically arranged with the connecting line between the first substrate and the second substrate as a center.
By adopting the technical scheme, the attaching range of the first metal sheet and the second metal sheet and the tension buffer zone is greatly improved, so that the area of the tension buffer zone is increased, and the difficulty of breaking through the tension buffer zone by the second substrate is increased.
Optionally, the peak of the first metal sheet along the direction parallel to the surface of the first substrate corresponds to the highest position of the arched outer surface of the second substrate.
When the second substrate is bent and deformed, the tension buffer area is forced to be spread out, and by adopting the technical scheme, the crest of the first metal sheet and the crest of the second metal sheet can effectively limit the spreading trend of the arched part of the second substrate, namely the difficulty of bending the second substrate to break through the tension buffer area is increased.
Optionally, the first metal sheet is provided with a plurality of first punching holes, each first punching hole is arranged at intervals along the length direction of the first metal sheet, a part of the first metal sheet between two adjacent first punching holes is a first connecting part, and the first connecting part is positioned at the crest of the first metal sheet; the second metal sheet is provided with a plurality of second punching holes, the second punching holes are distributed at intervals along the length direction of the second metal sheet, the part of the second metal sheet, which is positioned between two adjacent second punching holes, is a second connecting part, and the second connecting part is positioned at the crest of the second metal sheet.
Through adopting above-mentioned technical scheme, through setting up the punching press hole to keep connecting portion, and make the elastic capability of sheetmetal in the crest position improve greatly, and the elastic capability of sheetmetal can carry out elastic support for tension buffer, in order to avoid breaking through the second base plate that causes after the tension buffer because of second base plate bending stress is too big impaired, the elasticity of sheetmetal will carry out certain buffering to this bending stress promptly, thereby reduces the damage of second base plate.
Optionally, a section of first supporting part extends towards the direction of the adjacent first connecting parts, the free end of the first supporting part is provided with a first hook part, and the first hook parts of the first supporting parts of the adjacent two first connecting parts are hooked; the second connecting portions extend towards the direction of the adjacent second connecting portions to form a section of second supporting portions, the free ends of the second supporting portions are provided with second hook portions, and the second hook portions of the second supporting portions of the adjacent two second connecting portions are hooked.
After the punching hole is formed, the metal sheet is easy to bend and deform, so that deformation shaping of the tension buffer area is difficult to ensure, and when the stress of the wavy deformation of the second substrate is recovered and has a flattening trend, namely, the metal sheet is forced to be flattened and deformed.
Optionally, the reinforcing structure further includes a metal strip, the metal strip is located between the two second substrates, the metal strip abuts against the side face of the first substrate, and the end portion of the metal strip is fixedly connected with the first metal sheet.
By adopting the technical scheme, firstly, the shaping capability of the metal strip can improve the deformation shaping effect of the tension buffer zone; secondly, through the butt of metal strip and first base plate, can effectively restrict the forced displacement of reinforced structure to ensure the stability of tension buffer area position.
Optionally, the connecting piece comprises a first connecting piece and a second connecting piece, the first connecting piece is integrally connected with the end part of the first metal sheet, and the second connecting piece is integrally connected with the end part of the second metal sheet; the second connecting piece is provided with a through hole, the first connecting piece is integrally formed with a riveting claw, and the riveting claw penetrates through the through hole and is folded against the surface, deviating from the first connecting piece, of the second connecting piece.
Through adopting above-mentioned technical scheme, through the mode of self-deformation riveting to realize the quick and firm fixed connection between first sheetmetal and the second sheetmetal.
The application also provides an LCD module, adopts following technical scheme:
an LCD module comprises an LCD screen and a high-durability FPC, wherein the output end of the second substrate is connected with the LCD screen.
In summary, the present application includes at least one of the following beneficial technical effects:
the first metal sheet and the second metal sheet press the connection part between the first substrate and the second substrate, so that the connection part between the first substrate and the second substrate is kept static, and the possibility of deformation of the position caused by bending deformation of the second substrate is reduced, so that the fracture of the connection position is reduced.
The joint between the first substrate and the second substrate is deformed and shaped through the attaching and shaping of the first metal sheet and the second metal sheet, so that the joint between the first substrate and the second substrate has bending-resistant tension, namely the joint between the first substrate and the second substrate is a tension buffer zone, and the possibility of bending deformation fracture of the joint between the first substrate and the second substrate is effectively reduced;
through setting up the punching press hole to make the elastic capability of sheetmetal in the crest position improve greatly, and the elastic capability of sheetmetal can carry out elasticity support for tension buffer, and the elasticity of sheetmetal will carry out certain buffering to the bending stress of second base plate, thereby reduces the damage of second base plate.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the high-durability FPC of embodiment 1.
Fig. 2 is a partial cross-sectional view of the high-durability FPC of embodiment 1.
Fig. 3 is a sectional view of the high durability FPC of embodiment 1 for embodying a specific structure of a connector.
Fig. 4 is a schematic diagram of the overall structure of the LCD module of embodiment 1.
Fig. 5 is a partial cross-sectional view of the high-durability FPC of embodiment 2.
Fig. 6 is a top view of the high durability FPC of embodiment 3.
Fig. 7 is a partial cross-sectional view of the high-durability FPC of embodiment 3.
Fig. 8 is a top view for embodying the shape contrast of the first metal sheet and the second metal sheet of embodiment 3.
Fig. 9 is a partial cross-sectional view of the high-durability FPC of embodiment 4.
Fig. 10 is a schematic view of the first metal sheet of example 4.
Fig. 11 is a schematic view of a second metal sheet of example 4.
Reference numerals illustrate: 1. a first metal sheet; 2. a second metal sheet; 3. a metal strip; 4. a connecting piece; 10. an FPC main body; 100. an LCD screen; 101. a first substrate; 102. a second substrate; 103. a copper foil layer; 105. a protective layer; 106. an input connection; 107. a flat plug end; 11. a first peak; 12. a first punched hole; 13. a first connection portion; 14. a first support portion; 15. a first hook portion; 20. a reinforcing structure; 21. a second peak; 22. a second punched hole; 23. a second connecting portion; 24. a second supporting part; 25. a second hook portion; 30. a tension buffer zone; 41. a first connecting piece; 42. a second connecting piece; 43. a through hole; 44. riveting claw.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-11.
Embodiment 1 of the present application discloses a high-durability FPC.
Referring to fig. 1, the high-durability FPC includes an FPC body 10 and a reinforcing structure 20, wherein the FPC body 10 includes a first substrate 101 and two second substrates 102, each of the first substrate 101 and the second substrate 102 is made of a mylar material, a thickness of the first substrate 101 is greater than a sum of thicknesses of the two second substrates 102, a side of the first substrate 101 is simultaneously connected with a side of the two second substrates 102, and the connection may be in a bonding and integral connection.
As shown in fig. 1 and 2, copper foil layers 103 are fixed on the upper and lower surfaces of a first substrate 101, two copper foil layers 103 are also fixedly connected with two second substrates 102 respectively, and electroplating leads (not shown) are engraved on the surfaces of the copper foil layers 103; one end of the first substrate 101 far away from the second substrate 102 is set as an input connection end 106, one ends of the two second substrates 102 far away from the first substrate 101 are fixedly connected with flat plug ends 107, and electroplating leads are used for connecting the input connection ends 106 and the flat plug ends 107; the surface of the copper foil layer 103 is also provided with a protective layer 105, the protective layer 105 covers the side surface of the FPC body 10 at the same time, and the protective layer 105 is made of a high-temperature resistant and insulating material.
The reinforcement structure 20 is used for reinforcing the connection between the first substrate 101 and the second substrate 102, so as to reduce the occurrence of fracture caused by fatigue damage of the connection point between the second substrate 102 and the first substrate 101 after the second substrate 102 is bent and deformed for many times.
As shown in fig. 1 and 2, the reinforcing structure 20 includes a first metal sheet 1, a second metal sheet 2 and a metal strip 3, where the length directions of the first metal sheet 1, the second metal sheet 2 and the metal strip 3 are all along the width direction of the first substrate 101, the first metal sheet 1 and the second metal sheet 2 are respectively clung to two side surfaces of the connection part between the first substrate 101 and the second substrate 102, the metal strip 3 is located between the two second substrates 102, and the metal strip 3 is abutted against the side surfaces of the first substrate 101.
As shown in fig. 3, the ends of the first metal sheet 1, the second metal sheet 2 and the metal strip 3 are all located outside the FPC body 10 in the width direction, and the ends of the first metal sheet 1, the second metal sheet 2 and the metal strip 3 are fixedly connected by the connecting member 4. Specifically, the connecting piece 4 includes a first connecting piece 41 and a second connecting piece 42, the first connecting piece 41 is integrally connected with the end part of the first metal sheet 1, the second connecting piece 42 is integrally connected with the end part of the second metal sheet 2, through holes 43 are formed in the end parts of the second connecting piece 42 and the metal strip 3, and riveting claws 44 are formed in the middle part of the first connecting piece 41 in a punching mode.
After the first metal sheet 1, the second metal sheet 2 and the metal strip 3 are placed, the connecting piece 4 is punched and riveted by using a punching device, so that the riveting claw 44 penetrates through the second connecting piece 42 and the through hole 43 of the metal strip 3, and the riveting claw 44 is folded against the surface of the second connecting piece 42, which is away from the first connecting piece 41, so that the end parts of the first metal sheet 1, the second metal sheet 2 and the metal strip 3 are fixedly connected. The connection method of the ends of the first metal sheet 1, the second metal sheet 2 and the metal strip 3 is not limited to the above, and the connection method of the ends of the first metal sheet 1, the second metal sheet 2 and the metal strip 3 may be in the form of welding, bonding, or the like.
Embodiment 1 also discloses an LCD module.
As shown in fig. 4, the LCD module includes the LCD panel 100 and the above-mentioned high-durability FPC, and the flat mating end 107 of the second substrate 102 is connected to the LCD panel 100.
The implementation principle of the embodiment 1 is as follows: the first metal sheet 1 and the second metal sheet 2 simultaneously press the connection between the first substrate 101 and the second substrate 102, so that the connection between the first substrate 101 and the second substrate 102 is kept as static as possible, the possibility of deformation of the connection position caused by bending deformation of the second substrate 102 is reduced, and the fracture of the connection position is further reduced.
Further, by the contact of the metal strips 3, the first metal sheet 1 and the second metal sheet 2 can be restrained from sliding in the direction parallel to the first substrate 101, and occurrence of the sliding misalignment of the first metal sheet 1 and the second metal sheet 2 due to the bending deformation of the second substrate 102 can be reduced.
Embodiment 2 is different from embodiment 1 in that, as shown in fig. 5, the middle parts of the first metal sheet 1 and the second metal sheet 2 along the length direction thereof are bent in the same direction, and the bending direction is perpendicular to the surface of the first substrate 101, that is, the first metal sheet 1 and the second metal sheet 2 are both in an arc shape, and the radian is identical.
When the FPC is specifically assembled, the first metal sheet 1 and the second metal sheet 2 which are in the shape of curved arcs can be directly stuck and pressed on the FPC main body 10 by using pressing equipment, so that the connection part between the first substrate 101 and the second substrate 102 is forced to bend in a certain radian along the width direction of the connection part (other parts of the first substrate 101 and the second substrate 102 are kept in a flat state); the connection between the first substrate 101 and the second substrate 102 may be pre-bent, and then the bent first metal sheet 1 and the second metal sheet 2 may be pressed against the FPC body 10.
In this way, the connection between the first substrate 101 and the second substrate 102 is curved, so that the connection between the first substrate 101 and the second substrate 102 has bending-resistant tension, i.e. the connection between the first substrate 101 and the second substrate 102 is the tension buffer 30, and the bending deformation of the second substrate 102 needs to overcome the tension (break through the tension buffer 30), so that the bending stress concentration of the second substrate 102 is limited to a certain extent at a position far from the connection between the first substrate 101 and the second substrate 102, thereby effectively reducing the possibility of bending deformation fracture of the connection between the first substrate 101 and the second substrate 102.
Embodiment 3 is different from embodiment 2 in that, as shown in fig. 6 and 7, the first metal sheet 1 and the second metal sheet 2 are bent in a wavy manner along the vertical direction of the surface of the first substrate 101, and the connection between the first substrate 101 and the second substrate 102 is deformed adaptively, and the specific deformation processing manner is the same as that of embodiment 2, and other parts of the first substrate 101 and the second substrate 102 are kept in a flat state.
As shown in fig. 8, the first metal sheet 1 and the second metal sheet 2 are each in a wave shape along a direction parallel to the surface of the first substrate 101, and the peak of the first metal sheet 1 along the direction parallel to the surface of the first substrate 101 and the peak along the direction perpendicular to the surface of the first substrate 101 are both the same part and are named as a first peak 11; the peaks of the second metal sheet 2 along the surface direction parallel to the first substrate 101 and the peaks of the second metal sheet 2 along the surface direction perpendicular to the first substrate 101 are the same parts and named as second peaks 21, wherein the first peaks 11 of the first metal sheet 1 are attached to the highest positions of the corresponding arched outer surfaces of the second substrate 102, the second peaks 21 of the second metal sheet 2 are attached to the highest positions of the corresponding arched outer surfaces of the second substrate 102, and the first peaks 11 of the first metal sheet 1 and the troughs of the second metal sheet 2 are symmetrically arranged with the connecting line between the first substrate 101 and the second substrate 102 as a center.
The embodiment 3 is implemented by shaping the first metal sheet 1 and the second metal sheet 2 so that the connection between the first substrate 101 and the second substrate 102 is wavy, that is, the connection between the first substrate 101 and the second substrate 102 is a wavy tension buffer 30, so that the bending stress concentration of the second substrate 102 is limited to a certain extent to a position far away from the connection between the first substrate 101 and the second substrate 102.
In addition, by the shapes of the first metal sheet 1 and the second metal sheet 2, the tension buffer area 30 and the tension uniformity and area can be improved, so that the difficulty of breaking through the tension buffer area 30 due to bending deformation of the second substrate 102 is increased, and the possibility of bending deformation fracture at the joint between the first substrate 101 and the second substrate 102 is greatly reduced.
In embodiment 4, as shown in fig. 9, the arrangement is made on the basis of embodiment 3, in which the first metal sheet 1 is provided with a plurality of first punching holes 12, the first punching holes 12 are strip-shaped and extend along the length direction of the first metal sheet 1, each first punching hole 12 is arranged at intervals along the length direction of the first metal sheet 1, the portion of the first metal sheet 1 located between two adjacent first punching holes 12 is a first connecting portion 13, that is, the first connecting portion 13 is a portion of the first metal sheet 1 left after the first punching holes 12 are punched, and the first connecting portion 13 is located between the peaks and the valleys of the first metal sheet 1.
As shown in fig. 10, the first connecting portion 13 extends toward the adjacent first connecting portion 13 to form a first supporting portion 14, and a free end of the first supporting portion 14 is provided with a first hook portion 15; after the first metal sheet 1 is punched into the first punching hole 12, the first connecting portions 13 and the first supporting portions 14 are left, and when the first metal sheet 1 is bent to be wavy, the adjacent two first connecting portions 13 are close to each other, and the first supporting portions 14 are also close to each other, and the first hook portions 15 of the first supporting portions 14 of the adjacent two first connecting portions 13 are elastically hooked to each other.
As shown in fig. 11, the second metal sheet 2 is provided with a plurality of second punching holes 22, the second punching holes 22 are strip-shaped and extend along the length direction of the second metal sheet 2, each second punching hole 22 is arranged at intervals along the length direction of the second metal sheet 2, a portion of the second metal sheet 2 located between two adjacent second punching holes 22 is a second connecting portion 23, and the second connecting portion 23 is located between a peak and a trough of the second metal sheet 2.
The second connecting portions 23 extend towards the direction of the adjacent second connecting portions 23 to form a section of second supporting portion 24, the free ends of the second supporting portions 24 are provided with second hook portions 25, and the second hook portions 25 of the second supporting portions 24 of the adjacent two second connecting portions 23 are mutually elastically hooked.
The implementation principle of the embodiment 4 is as follows: the first support portion 14 and the second support portion 24 are provided to improve the ability of the first metal sheet 1 and the second metal sheet 2 to resist bending deformation recovery, thereby improving the deformation shaping effect on the tension buffer 30.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (9)
1. A high-durability FPC comprising a first substrate (101) and two second substrates (102), wherein one side of the first substrate (101) is fixedly connected with one side of the two second substrates (102) simultaneously, characterized in that: the device further comprises a reinforcing structure (20) for reinforcing the junction between the first substrate (101) and the second substrate (102);
the reinforcing structure (20) comprises a first metal sheet (1) and a second metal sheet (2), the length direction of the first metal sheet (1) and the length direction of the second metal sheet (2) are arranged along the width direction of a first substrate (101), the first metal sheet (1) and the second metal sheet (2) are respectively clung to the two side surfaces of the joint between the first substrate (101) and the second substrate (102), and the ends of the first metal sheet (1) and the second metal sheet (2) are connected through a connecting piece (4); the middle parts of the first metal sheet (1) and the second metal sheet (2) along the length direction of the first metal sheet and the second metal sheet are bent in the same direction, and the connection part between the first substrate (101) and the second substrate (102) is subjected to adaptive deformation.
2. The high durability FPC according to claim 1, wherein: the first metal sheet (1) and the second metal sheet (2) are of a structure which is bent in a wavy manner along the vertical direction of the surface of the first substrate (101), and the connection part between the first substrate (101) and the second substrate (102) is subjected to adaptive deformation.
3. The high durability FPC according to claim 2, wherein: the first metal sheet (1) and the second metal sheet (2) are all in wave shape along the direction parallel to the surface of the first substrate (101), and the wave crest of the first metal sheet (1) along the direction parallel to the surface of the first substrate (101) and the wave trough of the second metal sheet (2) along the direction parallel to the surface of the first substrate (101) are arranged symmetrically with the connecting line between the first substrate (101) and the second substrate (102) as the center.
4. A highly durable FPC according to claim 3, characterized in that: the peaks of the first metal sheet (1) along the direction parallel to the surface of the first substrate (101) are correspondingly attached to the highest part of the arched outer surface of the second substrate (102).
5. The high durability FPC according to claim 4 wherein: the first metal sheet (1) is provided with a plurality of first punching holes (12), the first punching holes (12) are distributed at intervals along the length direction of the first metal sheet (1), the part of the first metal sheet (1) between two adjacent first punching holes (12) is a first connecting part (13), and the first connecting part (13) is positioned between the wave crest and the wave trough of the first metal sheet (1); the second metal sheet (2) is provided with a plurality of second punching holes (22), the second punching holes (22) are distributed at intervals along the length direction of the second metal sheet (2), the part of the second metal sheet (2) between two adjacent second punching holes (22) is a second connecting part (23), and the second connecting part (23) is positioned between the wave crest and the wave trough of the second metal sheet (2).
6. The high durability FPC according to claim 5 wherein: the first connecting parts (13) extend towards the direction of the adjacent first connecting parts (13) to form a section of first supporting parts (14), the free ends of the first supporting parts (14) are provided with first hook parts (15), and the first hook parts (15) of the first supporting parts (14) of the adjacent two first connecting parts (13) are hooked; the second connecting portions (23) extend towards the direction of the adjacent second connecting portions (23) to form a section of second supporting portion (24), the free ends of the second supporting portions (24) are provided with second hook portions (25), and the second hook portions (25) of the second supporting portions (24) of the adjacent two second connecting portions (23) are hooked.
7. The high durability FPC according to claim 1, wherein: the reinforcing structure (20) further comprises metal strips (3), the metal strips (3) are located between the two second substrates (102), the metal strips (3) are abutted to the side faces of the first substrates (101), and the end portions of the metal strips (3) are fixedly connected with the first metal sheets (1).
8. The high durability FPC according to claim 1, wherein: the connecting piece (4) comprises a first connecting piece (41) and a second connecting piece (42), the first connecting piece (41) is integrally connected with the end part of the first metal sheet (1), and the second connecting piece (42) is integrally connected with the end part of the second metal sheet (2); the second connecting piece (42) is provided with a through hole (43), the first connecting piece (41) is integrally formed with a riveting claw (44), and the riveting claw (44) penetrates through the through hole (43) and is folded against the surface, deviating from the first connecting piece (41), of the second connecting piece (42).
9. An LCD module, characterized in that: comprising an LCD screen (100) and a highly durable FPC according to claim 1, the output of the second substrate (102) being connected to the LCD screen (100).
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| CN202111474513.2A CN114189986B (en) | 2021-12-03 | 2021-12-03 | High durable FPC and LCD module |
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| CN202111474513.2A CN114189986B (en) | 2021-12-03 | 2021-12-03 | High durable FPC and LCD module |
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| CN114189986A CN114189986A (en) | 2022-03-15 |
| CN114189986B true CN114189986B (en) | 2024-01-26 |
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| CN212752723U (en) * | 2020-07-15 | 2021-03-19 | 深圳市鸿岸电子科技有限公司 | FPC flexible circuit board |
| CN113490331A (en) * | 2021-05-21 | 2021-10-08 | 黄宝明 | High thermal conductivity's aluminium base board of flexible concatenation formula |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH1117288A (en) * | 1997-06-19 | 1999-01-22 | Minolta Co Ltd | Flexible circuit board capable of holding parts on both surfaces |
| US6302705B1 (en) * | 2000-06-22 | 2001-10-16 | Cray Inc. | Electrical circuit connector with support |
| CN109714883A (en) * | 2019-01-16 | 2019-05-03 | 九江耀宇精密电路有限公司 | Line build-out FPC |
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| CN114189986A (en) | 2022-03-15 |
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