CN2515922Y - Flexible circuit board with identification device - Google Patents

Abstract

Disclosed is a soft circuit board for identification, which comprises a flexible substrate, a conductive circuit and an ink layer. The conductive circuit is arranged on a surface of the flexible substrate; the ink layer is covered on the surface in the ways of coating, exposing and developing; at least a part of the conductive circuit is bared; the ink layer is provided with at least one identification area for an operator on a production line to identify.

Description

Soft circuit board capable of providing for identification

Technical field

The utility model relates to a kind of flexible circuit board, particularly relates to a kind of soft circuit board capable of providing for identification.

Background technology

Color inkjet printer (Color ink jet printer) has become part indispensable in modern's daily life.For example the user can utilize color inkjet printer to print required file and pattern, and is quite convenient.Wherein, general color inkjet printer all disposes two ink cartridges (Cartridge), and one be black (Black) ink cartridges, and another person is colour (Color) ink cartridges, in order to the ink of filling different colours respectively and as the usefulness of inkjet printing.Usually dispose a flexible circuit board on the ink cartridges, import in the chip (Chip) of ink cartridges, allow chip control ink cartridges, to carry out the work of inkjet printing according to the drive current of printer in order to drive current with printer.In addition, have several holes on the flexible circuit board, use for the metal salient point on the circuit of conducting wire in the flexible circuit board and printer (Dimples) to couple, to reach the effect of electrical connection.

In addition, also include the ink cartridges that shades of colour all separates on the market, its printable color includes black (Black), ocean blue (Cyan), carmetta (Magenta), yellow (Yellow), light black (Light black), light ocean blue (Light cyan), light magenta (Light magenta) and faint yellow different colours such as (Light yellow).Yet, it should be noted that, because the appearance color of general flexible circuit board is all identical, and its size, size, external form and circuit design are all quite similar, can allow operator on the production line can't discern the type of flexible circuit board, easily cause operator on ink cartridges, to be misplaced flexible circuit board easily.Some dealer just designs identification marks such as house mark (Brand Name), product item number (Serial Number) and strip specification is printed on the flexible circuit board, wherein, house mark can supply the usefulness of dealer or consumer's identification when product is sold, and product item number and strip specification can make product usefulness for operator identification when making and assemble.Yet many manufacture crafts of printing together promptly increase a production cost, do not calculate in the economic consideration, and identification mark will easily produce the phenomenon of the lacquer that comes off under the situation of making moist for a long time.

General flexible circuit board can engage (Tape AutomatedBonding automatically by the so-called coil type of industry, TAB) mode is made, and the TAB manufacture craft is more divided into etching (Etching) method and impact (Punch) method according to the method difference that takes the hole of flexible circuit board.It is as follows that the hole that takes flexible circuit board as how etching method and ballistic method as for industry will be distinguished description of drawings.

Please refer to Figure 1A～Fig. 1 J, it illustrates is that tradition is utilized the generalized section of etching method with the manufacture method flow process of the hole that takes flexible circuit board.At first, in Figure 1A, provide a base material 102, its material for example is that (Polyimide PI), then, plates one deck copper film 104 on base material 102, shown in Figure 1B with sputter (Sputtering) method to polyimides.Then, respectively on copper film 104 and base material smear photoresist layer (PR) 106 for 102 times, shown in Fig. 1 C, then, expose (Expose) and develop (Develop), make photoresist layer 106 formation predetermined pattern, shown in Fig. 1 D.Then, remove the photoresist layer 106 of non-predetermined pattern part, make to form several breach 107 between the photoresist layer 106 of remaining predetermined pattern, and make that the copper film 104 of part is to be exposed to the external world, shown in Fig. 1 E.Then, electroplate (Plating) copper coin 108, make copper coin 108 and copper film 104 link into an integrated entity, shown in Fig. 1 F at breach 107 places.Then, carry out etching and remove base material 102 partly, make that the breach 107 under the base material 102 more enlarges formation hole 110, shown in Fig. 1 G.Then, remove all remaining photoresist layers 106, make copper coin 108 and copper film 104 all be exposed to the external world, have several breach 109 between the copper coin 108, shown in Fig. 1 H.

Then, smear gold-tinted manufacture crafts such as photoresist, exposure, etching again, make that being exposed to extraneous part copper film 104 by breach 109 is removed, and copper coin 108 and remaining copper film 104 promptly form so-called conducting wire 111, and form hole 113 between the conducting wire 111, shown in Fig. 1 I.Afterwards, 111 periphery forms one deck insulating cement 112 in the conducting wire, with protection conducting wire 111, so, finish just flexible circuit board 114 is therefore manufactured, shown in Fig. 1 J.Yet, above-mentioned traditional etching process has several shortcomings, and for example manufacturing time is long and the bad phenomenon of finished product takes place easily, quite value-for-money not, and base material will produce a large amount of thick waste water after etching, cause the cost of waste water treatment and consider.

Please refer to Fig. 2 A～Fig. 2 I, what it illustrated is the generalized section that tradition is utilized the manufacture method flow process of the hole on the stamp manufactured flexible substrate.At first, in Fig. 2 A, provide a base material 202, then, a coated glue-line 204 (Adhesive) on base material 202 is shown in Fig. 2 B.Then, utilize the stamp machine that the base material 202 that adheres to glue-line 204 is gone out several holes 206, make hole 206 run through base material 202 and adhere to glue-line 204, shown in Fig. 2 C, then, on remaining glue-line 204, stick one deck copper coin 208, shown in Fig. 2 D.Then, on copper coin 208, form a photoresist layer 210, shown in Fig. 2 E, then, expose and develops, make photoresist layer 210 formation predetermined pattern, shown in Fig. 2 F.Then, remove the photoresist layer 210 of non-predetermined pattern part, make to form several breach 211 between the photoresist layer of remaining predetermined pattern, allow the copper coin 208 of non-predetermined pattern part be exposed to the external world, shown in Fig. 2 G.Then, carry out etching, make that being exposed to extraneous non-predetermined pattern part copper coin 208 by breach 211 is removed, shown in Fig. 2 H.

Afterwards, remove all photoresist layers 210 of residue, and form one deck insulating cement 212 in the periphery of copper coin 208, protecting remaining copper coin 208 formed conducting wires, so, just making, finishes flexible circuit board 214, shown in Fig. 2 I.Though this practice has fast, no waste water pollution problem of manufacture craft time and the low advantage of cost with respect to aforementioned etching method, but the hole spacing that it manufactures is too big, promptly very little in limited area inside aperture, that is to say that aperture resolution is not high, cause the contact area of printer and flexible circuit board very few, and reduce both accuracys rate when contacting.Another causes the base material between hole to rupture than serious problems for using the impact mode easily, reduces the yield of its finished product widely, also thereby relatively improves cost required when making.

The utility model content

The purpose of this utility model is to provide a kind of soft circuit board capable of providing for identification, it in the flexible circuit board manufacture craft simultaneously, for example can in manufacture method, form identification marks such as house mark and commodity item number, can save the cost of extra printing, and the phenomenon of avoiding lacquer to come off, or do the design of color identification, and all can allow the different flexible circuit board of the clear identification of operator on the production line, very convenient.

The purpose of this utility model is achieved in that promptly provides a kind of soft circuit board capable of providing for identification, is disposed on the ink cartridges, and its described flexible circuit board comprises: a flexible substrate, and it has a first surface; One conducting wire is disposed on the described first surface; And an ink lay, with apply, exposure, the mode of developing be covered on the described first surface, and exposes the described conducting wire to small part, and also is provided with at least one cog region that is used to discern on the described ink lay.

The advantage of the utility model device is, its design has the cog region of ink lay, so can allow the operator of production line discern flexible circuit board, very convenient, and also can in the manufacture craft of ink lay, form identification marks such as house mark and commodity item number, save the cost of extra printing, and the phenomenon of avoiding lacquer to come off, in addition, flexible circuit board of the present utility model can shorten the manufacture craft time, improve aperture resolution, and can reach the qualified products more than 99%, be highly suitable for producing in batches.

Description of drawings

Figure 1A～Fig. 1 J utilizes the generalized section of etching method with the manufacture method flow process of the hole that takes flexible circuit board for tradition;

Fig. 2 A～Fig. 2 I utilizes the generalized section of the manufacture method flow process of the hole on the stamp manufactured flexible substrate for tradition;

Fig. 3 A～Fig. 3 J is the generalized section of manufacture method flow process of the soft circuit board capable of providing for identification of preferred embodiment of the present utility model;

Fig. 4 is the schematic top plan view of the predetermined pattern on whole ink laies of flexible circuit board of Fig. 3 J;

Fig. 5 is the schematic top plan view that the part ink lay of the flexible circuit board of Fig. 3 J shows the solid color cog region;

Fig. 6 is covered with the schematic diagram of 3 different cog regions for whole ink laies of the flexible circuit board of Fig. 3 J;

Fig. 7 is covered with the schematic diagram of 3 different cog regions for the part ink lay of the flexible circuit board of Fig. 3 J.

Embodiment

The special design of the utility model one soft circuit board capable of providing for identification, be to be disposed on the ink cartridges (Cartridge), and flexible circuit board also can form at least one cog region in manufacture method, for example the utility model forms the color of cog region by the mode of adding material of the same colour at least (Colorant), in order to allow the usefulness of operator identification of production line.Wherein, the utility model also can be formed at distinguishing marks such as house mark (BrandName), product item number (Serial Number) and strip specification on the flexible circuit board, save the manufacture craft and the cost that additionally republish, allow operator conveniently discern product category.

The structure of soft circuit board capable of providing for identification of the present utility model is as follows with description of drawings.

Please refer to Fig. 3 A～Fig. 3 J, it illustrates is generalized section according to the manufacture method flow process of the soft circuit board capable of providing for identification of preferred embodiment of the present utility model.At first, in Fig. 3 A, provide a flexible substrate 302, its material for example be polyimides (Polyimide, PI).Certainly, the material of flexible substrate 302 of the present utility model also can be other thin polymer films (Polymer film) material, and is selected from mixture that Teflon (Teflon), polyamide (Polyamide), methyl esters polymethyl methacrylate (Polymethylmethacrylate), Merlon (Polycarbonate), polyester (Polyester) and polyimides-polyethylene terephthaldehyde ester co-polymer (Polyamide polyethylene-terephthalate copolymer) and above-mentioned wantonly two materials form and forms in the group arbitrary one.

Then, form a conducting wire 306 and be disposed at by glue-line 304 on the top surface of flexible substrate 302, shown in Fig. 3 B.Wherein, the material of conducting wire 306 can be metals such as copper or gold, even will put in order the Copper Foil or the goldleaf of volume directly is pasted on the flexible substrate 302, also can form conducting wire 306, and the thickness of Copper Foil or goldleaf is preferably approximately between 10 microns (μ m)～50 microns.Then, on conducting wire 306, form a photoresist layer 308, shown in Fig. 3 C, then, expose and develop, make photoresist layer 308 have predetermined pattern, shown in Fig. 3 D.Then, remove the photoresist layer 308 of non-predetermined pattern part, make to form several breach 309 between the photoresist layer 308 of remaining predetermined pattern, allow the conducting wire 306 of part be exposed to the external world, shown in Fig. 3 E, then, with photoresist layer 308 is mask (Mask), carries out etching and removes the conducting wire 306 that is exposed to extraneous part, makes breach 309 enlarge more, cause the glue-line 304 of part to be exposed to the external world, shown in Fig. 3 F.Then, remove remaining photoresist layer 308, make remaining conducting wire 306 be exposed to the external world, and conducting wire 306 formation predetermined patterns, shown in Fig. 3 G.

Then, the utility model applies an ink lay 310 especially on the top surface of flexible substrate 302, make ink lay 310 cover conducting wire 306 and glue-line 304, shown in Fig. 3 H.The mode that applies ink lay 310 includes screen painting (Screen printing) mode, spraying (Spray coating) mode, curtain is coated with (Curtain coating) mode or roller applies (Roller coating) mode.

Because the color of colorant includes black (Black), ocean blue (Cyan), carmetta (Magenta), yellow (Yellow), light black (Light black), light ocean blue (Light cyan), light magenta (Light magenta) and faint yellow (Light yellow), even also has orange (Oragne), green (Green), light orange (Light orange) and light green (Light green).So the colorant that makes an addition to ink lay 310 can be selected from arbitrary in the above-mentioned color of giving an example.In addition, the preferred materials of ink lay 310 is a video picture type macromolecular material, for example anti-solder ink (SolderMask) and polyimides, anti-solder ink can produce link (Cross Linking) after meeting light, make the structure of meeting light strengthen and be insoluble in the developer, as be same as negative photoresist (NegativePhotoresist).In addition, photo anti-corrosion agent material such as polyimides also can reach identical result.

Then, expose, make ink lay 310 have predetermined pattern, shown in Fig. 3 I, this predetermined pattern can include identification marks such as house mark and product item number.So, the utility model can directly be formed at identification marks such as house mark and product item number on the ink lay 310 by predetermined pattern, do not need again by traditional extra printing manufacture craft, avoid identification mark to produce the phenomenon that lacquer comes off, allow the user is very clear to discern product category by the identification mark on the flexible circuit board, quite convenient.Then; develop and remove the part ink lay 310; to form predetermined pattern; and reach the protection conducting wire 306 purpose; and form several holes 320 between the remaining ink lay 310, also just make conducting wire 306 be exposed to the external world, shown in Fig. 3 J; allow conducting wire 306 couple, to reach the effect of electrical connection by the metal salient point on the circuit of hole 320 and printer.Afterwards, carry out back baking (Post-Curing) again,, therefore, just form flexible circuit board 316 of the present utility model with the remaining ink lay 310 that hardens.

Owing in manufacture craft of the present utility model, do not need to go out hole 320 in flexible substrate 302 upper punches, so the manufacture method of flexible circuit board 316 of the present utility model can shorten the manufacture craft time, improve aperture resolution, and improve more than the yield to 99%, be highly suitable for a large amount of productions.

Please refer to Fig. 4, it illustrates is the schematic top plan view of predetermined pattern on whole ink laies of flexible circuit board of Fig. 3 J.In Fig. 4, flexible circuit board 316 comprises conducting wire 306 and ink lay 310, and the hole 320 of conducting wire 306 by ink lay 310 be exposed to the external world, couples in order to the metal salient point with printer.Wherein, because ink lay 310 adds a kind of colorant, Hong Se colorant for example, and in manufacture craft, whole ink lay 310 is dyed redness, and in order to the usefulness of confession operator identification.In addition, flexible circuit board 316 also can be in identification marks such as the surface marking house mark of ink lay 310 and product item numbers, for example the house mark pattern of " acer " shown in Fig. 4 reaches the product item number pattern of " 001 ", use for industry person or the convenient identification of user product category, also can avoid traditional printing to produce the problem of the lacquer that comes off, expanded service life is quite convenient in addition.

Certainly, under the prerequisite that flexible circuit board 316 can be identified, ink lay 310 shows color regional changeable of colorants, and as shown in Figure 5, it illustrates is the schematic top plan view of part ink lay demonstration solid color cog region of the flexible circuit board of Fig. 3 J.In Fig. 5, the upper end of ink lay 310 has a cog region 502, in order to showing the color of the colorant added, for example red (M), and cog region 502 maximum magnitudes can comprise whole ink lay 310, are equivalent to shown in Figure 4.So, cog region 502 also is available for users to the usefulness of identification as Fig. 4, and in manufacture craft of the present utility model, add red colorant and be formed at ink lay 310 and cog region 502 via the mode that applies, exposes and develop, afterwards, carry out the back baking again, with the remaining ink lay 310 that hardens.In addition, the flexible circuit board 316 of Fig. 5 also can further indicate house mark and product item number.

It should be noted that, the cog region of flexible circuit board 316 also can comprise the color that two kinds of colors are above, at this to show that redness (M), yellow (Y) and blue three kinds of colors such as (C) are that example is done explanation, as shown in Figure 6, it illustrates is the schematic diagram that whole ink laies of the flexible circuit board of Fig. 3 J are covered with two different cog regions.In Fig. 6, ink lay 310 is divided into cog region 602,604 and 606 from left to right, and its color is respectively yellow (Y), red (M) and blue (C), and in order to the usefulness for operator identification.Wherein, in manufacture craft of the present utility model, add yellow, red and blue colorant and be formed at ink lay 310, cog region 602,604 and 606 via the mode that applies, exposes and develop, afterwards, carry out the back baking again, with the remaining ink lay 310 that hardens.In addition, the flexible circuit board 316 of Fig. 6 also can further indicate house mark and product item number.

Certainly, under the prerequisite that flexible circuit board 316 can be identified, cog region 602,604 and 606 also can reduce the scope, and as shown in Figure 7, it illustrates is the schematic diagram that the part ink lay of the flexible circuit board of Fig. 3 J is covered with three different cog regions.In Fig. 7, the upper end of ink lay 310 is divided into cog region 702,704 and 706 from left to right, and its color is respectively yellow (Y), red (M) and blue (C), also can supply the usefulness of operator identification as Fig. 6.Wherein, in manufacture craft of the present utility model, add yellow, redness and blue colorant and be formed at ink lay 310, cog region 702,704 and 706, afterwards, carry out the back again and toast, with the remaining ink lay 310 that hardens via the mode that applies, exposes and develop.In addition, also signable house mark of the flexible circuit board 316 of Fig. 7 and product item number.

Therefore, soft circuit board capable of providing for identification of the present utility model is disposed on the ink cartridges, and flexible circuit board comprises flexible substrate, conducting wire and ink lay, and for example material is a video picture form height molecular material, and the conducting wire is disposed on the surface of flexible substrate.Wherein, ink lay covers on the flexible substrate in the mode that applies, exposes, develops, and exposes the conducting wire to small part, and ink lay has at least one cog region.Wherein, cog region can add material of the same colour at least in manufacture craft of the present utility model mode is formed in the part or all of ink lay, and the utility model can directly be formed at identification marks such as house mark and product item number on the ink lay by predetermined pattern.

Claims (11)

1. a soft circuit board capable of providing for identification is disposed on the ink cartridges, it is characterized in that, described flexible circuit board comprises: a flexible substrate, and it has a first surface; One conducting wire is disposed on the described first surface; And an ink lay, with apply, exposure, the mode of developing be covered on the described first surface, and exposes the described conducting wire to small part, and also is provided with at least one cog region that is used to discern on the described ink lay.

2. flexible circuit board as claimed in claim 1 is characterized in that, described ink lay forms the color of described cog region by the mode of adding material of the same colour at least.

3. flexible circuit board as claimed in claim 2, it is characterized in that, the color of described colorant is selected from black (Black), ocean blue (Cyan), carmetta (Magenta), yellow (Yellow), light black (Light black), light ocean blue (Light cyan), light magenta (Light magenta), faint yellow (Light yellow), and orange (Oragne), green (Green), light orange (Light orange) and light green (Light green) are formed arbitrary in the group.

4. flexible circuit board as claimed in claim 2 is characterized in that, described cog region is an identification mark.

5. flexible circuit board as claimed in claim 4 is characterized in that, described identification mark is a house mark.

6. flexible circuit board as claimed in claim 1, it is characterized in that, described flexible substrate is selected from polyimides (Polyimide, PI), Teflon (Teflon), polyamide (Polyamide), methyl esters polymethyl methacrylate (Polymethylmethacrylate), Merlon (Polycarbonate), polyester (Polyester), the mixture that pi-polyethylene terephthaldehyde ester co-polymer (Polyamidepolyethylene-terephthalate copolymer) and above-mentioned wantonly two materials form are formed any in the group.

7. flexible circuit board as claimed in claim 1 is characterized in that, the material of described ink lay is a video picture type macromolecular material.

8. flexible circuit board as claimed in claim 7 is characterized in that, described video picture type macromolecular material is anti-solder ink (Solder Mask).

9. flexible circuit board as claimed in claim 7 is characterized in that, described video picture type macromolecular material is a polyimides.

10. flexible circuit board as claimed in claim 1, it is characterized in that the coating method of described ink lay is selected from screen painting (Screen printing) mode, spraying (Spray coating) mode, curtain and is coated with (Curtain coating) mode and roller (Roller Coating) mode that applies and forms a kind of in the group.

11. flexible circuit board as claimed in claim 1 is characterized in that, also includes the step of back baking (Post-curing) described ink lay.

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