CN114189986A - High durable FPC and LCD module - Google Patents
High durable FPC and LCD module Download PDFInfo
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- CN114189986A CN114189986A CN202111474513.2A CN202111474513A CN114189986A CN 114189986 A CN114189986 A CN 114189986A CN 202111474513 A CN202111474513 A CN 202111474513A CN 114189986 A CN114189986 A CN 114189986A
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- 239000000758 substrate Substances 0.000 claims description 160
- 239000002184 metal Substances 0.000 claims description 152
- 229910052751 metal Inorganic materials 0.000 claims description 152
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 210000000078 claw Anatomy 0.000 claims description 7
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 230000003068 static effect Effects 0.000 abstract description 4
- 238000005452 bending Methods 0.000 description 25
- 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 8
- 239000011241 protective layer Substances 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009713 electroplating Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010030 laminating 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
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing 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
Images
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
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- 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
Abstract
The utility model relates to a high durable FPC and LCD module, wherein the main scheme is a high durable FPC, it includes first base plate, two second base plates and be used for carrying out reinforced structure reinforced (rfd) to the 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 passes through the connecting piece and is connected. This application pushes down junction between first base plate and the second base plate through first sheetmetal and second sheetmetal for junction keeps static between first base plate and the second base plate, and then reduces because of the crooked deformation of second base plate leads to the possibility of this position deformation, with the fracture that reduces this hookup location.
Description
Technical Field
The application relates to the field of LCD screen technology, especially relates to a high durable FPC and LCD module.
Background
Along with the improvement of living standard of people, the demand of people on electronic products is increasing, common electronic products include computers, mobile phones, pads and other products, and the products generally display needed pictures through an LCD screen.
The LCD screen of the traditional electronic product is generally connected with an FPC (also called a flexible circuit board), and the FPC has the advantages of free bending, winding, folding and the like, so that the LCD screen is more suitable for narrow space in the electronic product, the volume of the electronic product is reduced in a phase change manner, and the LCD screen is suitable for the development trend of miniaturization and high density of the electronic product.
Chinese patent with publication number CN109714883A discloses a line compensation FPC, including first base plate and two second base plates, the right-hand member of first base plate and two second base plate fixed connection, the upper and lower both sides of first base plate are all fixed and are equipped with the copper foil layer, two copper foil layers still respectively with two second base plate fixed connection, the surface of two copper foil layers is all fixed and is equipped with the pad, and the surface of two copper foil layers is all carved and is equipped with electroplating lead, pad and electroplating lead connection, the one end fixedly connected with tip of keeping away from the second base plate of first base plate, the equal fixedly connected with flat grafting end of one end of keeping away from first base plate of two second base plates.
In view of the above-mentioned related technologies, the inventor believes that, when the output end of the second substrate is connected to a movable output structure (for example, the output structure is a flip LCD screen), after a plurality of rotations, the connection point of the second substrate and the first substrate is prone to fatigue damage and fracture, thereby affecting circuit transmission and presenting a risk of open circuit; even if the connection mode of the second substrate and the first substrate is set to be integrally formed, due to the difference in thickness between the first substrate and the second substrate, the stress of the second substrate deforming and bending will be increased suddenly at the connection point, and thus the connection point is also easily broken.
Disclosure of Invention
In order to improve the durability of the FPC, the application provides a highly durable 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 reinforced (rfd) structure reinforced (rfd) 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 (rfd) 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 passes through the connecting piece and is connected.
By adopting the technical scheme, the joint between the first substrate and the second substrate is pressed through the first metal sheet and the second metal sheet, so that the joint between the first substrate and the second substrate is kept static, the possibility of deformation of the position caused by bending deformation of the second substrate is reduced, and the fracture of the joint is reduced.
Optionally, the middle portions 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 joint between the first substrate and the second substrate is deformed in an adaptive manner.
By adopting the technical scheme, the joint between the first substrate and the second substrate is deformed and shaped by the attaching and shaping of the first metal sheet and the second metal sheet, the joint between the first substrate and the second substrate is in a curved arc shape, and the joint between the first substrate and the second substrate has anti-bending tension, namely the joint between the first substrate and the second substrate is a tension buffer area, and the bending deformation of the second substrate needs to overcome the tension (break through the tension buffer area), so that the bending stress concentration of the second substrate is limited at a position far away from the joint between the first substrate and the second substrate to a certain extent, and the possibility of bending deformation fracture of the joint between the first substrate and the second substrate is effectively reduced.
Optionally, the first metal sheet and the second metal sheet are bent in a wave shape along a vertical direction in the surface direction of the first substrate, and a joint between the first substrate and the second substrate is deformed adaptively.
Through adopting above-mentioned technical scheme, through the laminating design of first sheetmetal and second sheetmetal, carry out the 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 the wave form, thereby make the junction between first base plate and the second base plate have anti crooked tension, the junction between first base plate and the second base plate is the tension buffer, and the crooked deformation of second base plate then need overcome this tension (breaks through the tension buffer) earlier, consequently limit the position of the junction between first base plate and the second base plate with the crooked stress concentration department of second base plate to a certain extent, thereby effectively reduce the crooked deformation fracture's of the junction between first base plate and the second base plate possibility.
In addition, the influence of the connection part between the wavy first substrate and the wavy second substrate on the deformation degree of other parts of the first substrate or the second substrate is small, namely, other parts of the first substrate and the second substrate can still keep a straight state, and only the tension buffer area is wavy; secondly, the wavy tension buffer area has larger tension, so the difficulty that the second substrate bends to break through the tension buffer area is greatly increased.
Optionally, the first metal sheet and the second metal sheet are both wavy in a direction parallel to the surface of the first substrate, and a peak of the first metal sheet in the direction parallel to the surface of the first substrate and a valley of the second metal sheet in the direction parallel to the surface of the first substrate are symmetrically arranged around a connecting line between the first substrate and the second substrate.
Through adopting above-mentioned technical scheme for first sheetmetal and second sheetmetal improve greatly with the laminating scope of tension buffer respectively, in order to improve the area of tension buffer, in order to increase the degree of difficulty that the second base plate broke through the tension buffer.
Optionally, the wave crest of the first metal sheet along the direction parallel to the surface of the first substrate is correspondingly attached 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 tends to be forced to be spread out, and by adopting the technical scheme, the wave crest position of the first metal sheet and the wave crest position of the second metal sheet can effectively limit the spreading tendency of the arched position of the second substrate, namely, the difficulty of the bending of the second substrate to break through the tension buffer area is increased.
Optionally, the first metal sheet is provided with a plurality of first stamping holes, each first stamping hole is arranged at intervals along the length direction of the first metal sheet, a part of the first metal sheet located between two adjacent first stamping holes is a first connecting part, and the first connecting part is located at a wave crest of the first metal sheet; the second metal sheet is provided with a plurality of second stamping holes, the second stamping holes are distributed at intervals along the length direction of the second metal sheet, the part, located between every two adjacent second stamping holes, of the second metal sheet is a second connecting part, and the second connecting part is located at the wave crest of the second metal sheet.
Through adopting above-mentioned technical scheme, through setting up the punching press hole to reserve connecting portion, and make the sheetmetal improve greatly in the elastic capacity of crest position, and the elastic capacity of sheetmetal can carry out the elastic support for the tension buffer, in order to avoid breaking through the second base plate that causes behind 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 reduce the damage of second base plate.
Optionally, a section of first supporting part extends from the first connecting part towards the direction of the adjacent first connecting part, a first hook part is arranged at the free end of the first supporting part, and the first hook parts of the first supporting parts of the two adjacent first connecting parts are hooked; the second connecting parts extend towards the direction of the adjacent second connecting parts to form a section of second supporting part, the free ends of the second supporting parts are provided with second hook parts, and the second hook parts of the second supporting parts of the two adjacent second connecting parts are hooked.
After the punching holes are formed, the metal sheet is easy to bend and deform, so that deformation and shaping of the tension buffer area are difficult to ensure, when the stress of the wave-shaped deformation of the second substrate is recovered and the second substrate tends to be flat, the metal sheet tends to be forced to be flat and deformed, and by adopting the technical scheme, the two hook parts are mutually hooked, so that the supporting parts are connected, and the forced deformation of the metal sheet can be effectively prevented.
Optionally, the reinforcing structure further includes a metal strip, the metal strip is located between the two second substrates, and the metal strip abuts against the side surface of the first substrate, and an end portion of the metal strip is fixedly connected to the first metal sheet.
By adopting the technical scheme, firstly, the shaping capacity of the metal strip can improve the deformation shaping effect of the tension buffer area; 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 position.
Optionally, the connecting piece includes a first connecting piece and a second connecting piece, the first connecting piece is integrally connected with the end of the first metal sheet, and the second connecting piece is integrally connected with the end 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 turned over to abut against the surface of the second connecting piece, which is far away from the first connecting piece.
Through adopting above-mentioned technical scheme, through the mode from the deformation riveting to realize the quick and firm fixed connection between first sheetmetal and the second sheetmetal.
The application still provides a LCD module, adopts following technical scheme:
the 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 joint between the first substrate and the second substrate, so that the joint between the first substrate and the second substrate is kept static, the possibility of deformation of the position caused by bending deformation of the second substrate is reduced, and fracture of the joint position is reduced.
The joint between the first substrate and the second substrate is subjected to deformation shaping through the attaching shaping of the first metal sheet and the second metal sheet, so that the joint between the first substrate and the second substrate has tension resisting bending, namely the joint between the first substrate and the second substrate is a tension buffer area, 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 metal sheet improve greatly in the elastic capacity of crest position, and the elastic capacity of metal sheet can carry out elastic support for the tension buffer, the elasticity of metal sheet 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 view of the entire structure of the high-durability FPC of embodiment 1.
Fig. 2 is a partial sectional view of the high-durability FPC of embodiment 1.
Fig. 3 is a sectional view for embodying a detailed structure of a connector of the high-durability FPC of embodiment 1.
Fig. 4 is a schematic view of the overall structure of the LCD module of embodiment 1.
Fig. 5 is a partial 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 sectional view of the high-durability FPC of embodiment 3.
Fig. 8 is a plan view for showing a shape comparison of the first metal sheet and the second metal sheet of example 3.
Fig. 9 is a partial 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.
Description of reference numerals: 1. a first metal sheet; 2. a second metal sheet; 3. a metal strip; 4. a connecting member; 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 end; 107. a flat plug end; 11. a first peak; 12. a first punched hole; 13. a first connection portion; 14. a first support section; 15. a first hook portion; 20. reinforcing the structure; 21. a second peak; 22. a second punched hole; 23. a second connecting portion; 24. a second support portion; 25. a second hook portion; 30. a tension buffer zone; 41. a first connecting piece; 42. a second connecting sheet; 43. a through hole; 44. and (5) riveting the jaws.
Detailed Description
The present application is described in further detail below with reference to figures 1-11.
The embodiment 1 of the application discloses a high-durability FPC.
Referring to fig. 1, the high durability FPC includes an FPC main body 10 and a reinforcing structure 20, wherein the FPC main body 10 includes a first substrate 101 and two second substrates 102, the first substrate 101 and the second substrates 102 are made of mylar material, a thickness of the first substrate 101 is greater than a sum of thicknesses of the two second substrates 102, and one side surface of the first substrate 101 is simultaneously connected to one side surfaces of the two second substrates 102 in a bonding and integral molding manner.
As shown in fig. 1 and 2, copper foil layers 103 are fixed on both upper and lower surfaces of a first substrate 101, the two copper foil layers 103 are further fixedly connected to two second substrates 102, respectively, and plating leads (not shown) are carved on the surfaces of the copper foil layers 103; one end of the first substrate 101, which is far away from the second substrates 102, is set as an input connection end 106, one ends of the two second substrates 102, which are far away from the first substrate 101, are fixedly connected with flat plug-in ends 107, and the electroplating leads are used for connecting the input connection end 106 and the flat plug-in ends 107; the surface of the copper foil layer 103 is further provided with a protective layer 105, the protective layer 105 covers the side surface of the FPC main body 10, and the protective layer 105 is made of a high-temperature resistant and insulating material.
The reinforcing structure 20 is used for reinforcing a joint between the first substrate 101 and the second substrate 102, so as to reduce the occurrence of fracture caused by fatigue damage of a joint between the second substrate 102 and the first substrate 101 after the second substrate 102 is bent and deformed for multiple 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, the length directions of the first metal sheet 1, the second metal sheet 2 and the metal strip 3 are all arranged along the width direction of the first substrate 101, wherein the first metal sheet 1 and the second metal sheet 2 are respectively attached to two side surfaces of a joint 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 abuts against a side surface 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 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 connected with the end portion of the first metal sheet 1 in an integrated manner, the second connecting piece 42 is connected with the end portion of the second metal sheet 2 in an integrated manner, through holes 43 are formed in the end portions of the second connecting piece 42 and the metal strip 3, and riveting claws 44 are formed in the middle of the first connecting piece 41 in an impact manner.
After the first metal sheet 1, the second metal sheet 2 and the metal strip 3 are placed completely, the connecting piece 4 is punched and riveted by using punching equipment, so that the riveting claw 44 penetrates through the through hole 43 of the second connecting sheet 42 and the metal strip 3, and the riveting claw 44 is turned over to abut against the surface, deviating from the first connecting sheet 41, of the second connecting sheet 42, and therefore 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 first metal sheet 1, the second metal sheet 2, and the end portions of the metal strips 3 is not limited to the above-described method, and the connection method of the first metal sheet 1, the second metal sheet 2, and the end portions of the metal strips 3 may be welding, bonding, or the like.
As shown in fig. 4, the LCD module includes an LCD panel 100 and the above-mentioned high-durability FPC, and the flat-insertion terminal 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 joint between the first substrate 101 and the second substrate 102, so that the joint between the first substrate 101 and the second substrate 102 is kept in a static state as much as possible, thereby reducing the possibility of deformation of the position due to bending deformation of the second substrate 102, and further reducing the fracture of the joint.
Further, the contact of the metal strips 3 can restrict the first metal piece 1 and the second metal piece 2 from sliding in a direction parallel to the first substrate 101, thereby reducing the occurrence of slippage and misalignment of the first metal piece 1 and the second metal piece 2 due to bending deformation of the second substrate 102.
During specific assembly, the first metal sheet 1 and the second metal sheet 2 which are in the arc shapes can be directly attached to the FPC main body 10 by pressing equipment, so that the joint between the first substrate 101 and the second substrate 102 is forced to bend along the width direction of the joint to a certain radian (other parts of the first substrate 101 and the second substrate 102 are kept in a flat state); the joint between the first substrate 101 and the second substrate 102 may be pre-bent, and then the first metal piece 1 and the second metal piece 2 having the arc shapes may be attached to the FPC body 10.
In this way, the joint between the first substrate 101 and the second substrate 102 is curved, so that the joint between the first substrate 101 and the second substrate 102 has a tensile force resistant to bending, that is, the joint between the first substrate 101 and the second substrate 102 is the tensile force buffer area 30, and the bending deformation of the second substrate 102 needs to overcome the tensile force (break through the tensile force buffer area 30) first, so that the bending stress concentration of the second substrate 102 is limited to a position far away from the joint between the first substrate 101 and the second substrate 102 to a certain extent, thereby effectively reducing the possibility of the bending deformation fracture at the joint between the first substrate 101 and the second substrate 102.
Example 3 is different from example 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 shape in a direction perpendicular to the surface of the first substrate 101, and the joint 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 example 2, and other portions of the first substrate 101 and the second substrate 102 are kept flat.
As shown in fig. 8, the first metal sheet 1 and the second metal sheet 2 are both waved along a direction parallel to the surface of the first substrate 101, and a peak of the first metal sheet 1 along a direction parallel to the surface of the first substrate 101 and a peak of the first metal sheet 1 along a direction perpendicular to the surface of the first substrate 101 are both at the same position and are named as a first peak 11; the wave crest of the second metal sheet 2 along the direction parallel to the surface of the first substrate 101 and the wave crest along the direction perpendicular to the surface of the first substrate 101 are both at the same position and are named as a second wave crest 21, wherein the first wave crest 11 of the first metal sheet 1 is attached to the highest position of the corresponding arched outer surface of the second substrate 102, the second wave crest 21 of the second metal sheet 2 is attached to the highest position of the corresponding arched outer surface of the second substrate 102, and the first wave crest 11 of the first metal sheet 1 and the wave trough of the second metal sheet 2 are symmetrically arranged by taking the connecting line between the first substrate 101 and the second substrate 102 as the center.
The principle of embodiment 3 is that the joint between the first substrate 101 and the second substrate 102 is made to be wavy by the bonding and shaping of the first metal sheet 1 and the second metal sheet 2, that is, the joint between the first substrate 101 and the second substrate 102 is the wavy tension buffer zone 30, so that the bending stress concentration of the second substrate 102 is limited to a position far away from the joint between the first substrate 101 and the second substrate 102 to some extent.
In addition, the shapes of the first metal sheet 1 and the second metal sheet 2 can improve the tension buffer area 30, the tension uniformity and the area, so that the difficulty of breaking through the tension buffer area 30 due to the bending deformation of the second substrate 102 is increased, and the possibility of breakage of the bending deformation at the joint between the first substrate 101 and the second substrate 102 is greatly reduced.
Embodiment 4 is configured based on embodiment 3, as shown in fig. 9, the first metal sheet 1 is provided with a plurality of first stamping holes 12, the first stamping holes 12 are strip-shaped and extend along the length direction of the first metal sheet 1, each first stamping hole 12 is arranged at intervals along the length direction of the first metal sheet 1, a portion of the first metal sheet 1 located between two adjacent first stamping 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 stamping hole 12 is stamped, and the first connecting portion 13 is located between a peak and a valley 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 15; after the first punched hole 12 is punched in the first metal sheet 1, 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, two adjacent first connecting portions 13 are close to each other, the first supporting portions 14 are also close to each other, and the first hook portions 15 of the first supporting portions 14 of two adjacent 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 stamping holes 22, the second stamping holes 22 are strip-shaped and extend along the length direction of the second metal sheet 2, the second stamping holes 22 are 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 stamping 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 toward 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 two adjacent second connecting portions 23 are elastically hooked with each other.
The implementation principle of the embodiment 4 is as follows: through setting up first supporting part 14 and second supporting part 24 to improve the ability that the anti bending deformation of first sheetmetal 1 and second sheetmetal 2 resumeed, thereby improve the deformation shaping effect to tension buffer 30.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A highly durable 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) at the same time, characterized in that: the reinforcing structure (20) is used for reinforcing the joint between the first substrate (101) and the second substrate (102);
reinforced structure (20) include first sheetmetal (1) and second sheetmetal (2), the length direction of first sheetmetal (1) and second sheetmetal (2) sets up along the width direction of first base plate (101), the both sides surface of junction between first base plate (101) and second base plate (102) is hugged closely respectively to first sheetmetal (1) and second sheetmetal (2), and first sheetmetal (1) passes through connecting piece (4) with the tip of second sheetmetal (2) and is connected.
2. The high-durability FPC as claimed in claim 1, wherein: 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 joint between the first substrate (101) and the second substrate (102) is deformed in an adaptive manner.
3. The high-durability FPC as claimed in claim 1, wherein: the first metal sheet (1) and the second metal sheet (2) are in a wavy structure which is bent in the direction vertical to the surface of the first base plate (101), and the joint between the first base plate (101) and the second base plate (102) is deformed in an adaptive manner.
4. The high-durability FPC as claimed in claim 3, wherein: the first metal sheet (1) and the second metal sheet (2) are wavy along a direction parallel to the surface of the first substrate (101), and the wave crests of the first metal sheet (1) along the direction parallel to the surface of the first substrate (101) and the wave troughs of the second metal sheet (2) along the direction parallel to the surface of the first substrate (101) are arranged in a central symmetry mode by using a connecting line between the first substrate (101) and the second substrate (102).
5. The high-durability FPC as claimed in claim 4, wherein: the wave crest of the first metal sheet (1) along the direction parallel to the surface of the first substrate (101) is correspondingly attached to the highest position of the arched outer surface of the second substrate (102).
6. The high-durability FPC as claimed in claim 5, wherein: the first metal sheet (1) is provided with a plurality of first stamping holes (12), the first stamping holes (12) are arranged at intervals along the length direction of the first metal sheet (1), the part of the first metal sheet (1) located between two adjacent first stamping holes (12) is a first connecting part (13), and the first connecting part (13) is located 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 stamping holes (22), the second stamping holes (22) are arranged at intervals along the length direction of the second metal sheet (2), the part, located between every two adjacent second stamping holes (22), of the second metal sheet (2) is a second connecting part (23), and the second connecting part (23) is located between the wave crests and the wave troughs of the second metal sheet (2).
7. The high-durability FPC as claimed in claim 6, wherein: the first connecting parts (13) extend towards the direction of the adjacent first connecting parts (13) to form a section of first supporting part (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 two adjacent first connecting parts (13) are hooked; the second connecting parts (23) extend towards the direction of the adjacent second connecting parts (23) to form a section of second supporting part (24), the free ends of the second supporting parts (24) are provided with second hook parts (25), and the second hook parts (25) of the second supporting parts (24) of the two adjacent second connecting parts (23) are hooked.
8. The high-durability FPC as claimed in claim 1, wherein: the reinforcing structure (20) further comprises metal strips (3), the metal strips (3) are located between the two second base plates (102), the metal strips (3) are abutted to the side faces of the first base plates (101), and the end portions of the metal strips (3) are fixedly connected with the first metal sheets (1).
9. The high-durability FPC as claimed in 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 connected with the end part of the first metal sheet (1) in an integrated forming mode, and the second connecting piece (42) is connected with the end part of the second metal sheet (2) in an integrated forming mode; 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 to abut against the surface of the second connecting piece (42) departing from the first connecting piece (41).
10. An LCD module, its characterized in that: comprising an LCD panel (100) and a highly durable FPC according to claim 1, the output terminals of the second substrate (102) being connected to the LCD panel (100).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111474513.2A CN114189986B (en) | 2021-12-03 | 2021-12-03 | High durable FPC and LCD module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111474513.2A CN114189986B (en) | 2021-12-03 | 2021-12-03 | High durable FPC and LCD module |
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| CN114189986A true CN114189986A (en) | 2022-03-15 |
| CN114189986B CN114189986B (en) | 2024-01-26 |
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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 |
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| CN109714883A (en) * | 2019-01-16 | 2019-05-03 | 九江耀宇精密电路有限公司 | Line build-out FPC |
| CN111752021A (en) * | 2020-07-03 | 2020-10-09 | 武汉华星光电技术有限公司 | Liquid crystal display device having a plurality of pixel electrodes |
| 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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2021
- 2021-12-03 CN CN202111474513.2A patent/CN114189986B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111752021A (en) * | 2020-07-03 | 2020-10-09 | 武汉华星光电技术有限公司 | Liquid crystal display device having a plurality of pixel electrodes |
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| CN114189986B (en) | 2024-01-26 |
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