CN103298266B - The preparation method of keyboard FPC - Google Patents
The preparation method of keyboard FPC Download PDFInfo
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- CN103298266B CN103298266B CN201310159492.4A CN201310159492A CN103298266B CN 103298266 B CN103298266 B CN 103298266B CN 201310159492 A CN201310159492 A CN 201310159492A CN 103298266 B CN103298266 B CN 103298266B
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Abstract
The preparation method that the invention provides a kind of keyboard FPC, comprises the following steps: step 1, provide three plastic sheetings, be respectively used to make the first FPC, space bar and the second FPC; Step 2, provide silver slurry on first plastic sheeting, to print the first circuit pattern by normal process, be made into the first FPC, utilize second plastic sheeting to make space bar; Step 3, utilization silver slurry print second circuit pattern on the 3rd plastic sheeting, and described second circuit pattern is provided with the place of number place equivalent resistance to be printed; Step 4, provide electrocondution slurry, utilize the place of electrocondution slurry equivalent resistance to be printed on the 3rd plastic sheeting that is printed with second circuit pattern to be printed as required equivalent resistance, complete the making of the second FPC. Utilize electrocondution slurry to adopt twice printing technology to be printed as equivalent resistance, realize the adjustable of equivalent resistance resistance, coordinate circuit function can realize well elimination " Ghost Key " function.
Description
Technical field
The present invention relates to computor-keyboard field, relate in particular to a kind of preparation method of keyboard FPC.
Background technology
Keyboard, for a kind of instruction and data input unit of operating equipment operation; Also refer to pacify through systemOne group of function key (as typewriter, computor-keyboard) of machine of row's operation or equipment. Keyboard is the most commonComputer entry device, it is widely used on microcomputer and various terminal device. Computer behaviourAuthor by keyboard to the various instructions of computer input, data, the work of command computer. ComputerRuuning situation outputs to display, and operator can utilize keyboard and display and computer pair easilyWords, modify, edit program, control and observe the operation of computer.
Keyboard is in fact the set of one group of key switch. All buttons are detected by Keyboard Control IC,Convert again the needed signal of host side to and give system. The connected mode of key switch mainly contains two kinds.One is only mode keystroke interface. This kind of each button of mode is separate, and each button respectively connects an inputLine, the button duty in an input line can not affect the duty in other input lines. ThereforeCan be easy to judge that by the level state that detects input line which button has been pressed. Independent button sideFormula simplicity of design, but in the time that number of keys is many, will takies and control a lot of input ports of IC, circuit also can becomeObtain numerous and diverse. The second way is matrix keyboard Interface design. This mode is made up of line and alignment,Button is positioned on the crosspoint of row, column, and the row-column configuration of a 4*4 can form one and contain 16 buttonsKeyboard. The matrix of now conventional keyboard is generally the modes such as 8*16,8*18,8*20, and these matrixes canConnect button and exceed 120. The judgment mode of this matrix keyboard button is to adopt scanning method, when there being buttonWhile pressing, thereby judging by the mode of scanning which two line has been communicated with, Keyboard Control IC learns which isIndividual key-press input.
But the key-press status of matrix keyboard is interactional. Now from matrix, randomly draw a 2*2Matrix, can connect four buttons, we are defined as A, B, C, D temporarily. These four buttons need onlyWherein three buttons have been pressed simultaneously, no matter whether the 4th button is pressed, all can treat as and be pressed,Because by other three buttons, the 4th crosspoint has been joined together, this 4th buttonIndustry is referred to as " Ghost Key ". " Ghost Key " is the problem that matrix keyboard is difficult to avoid, and namely ought have threeWhen individual above button is pinned simultaneously, are three crosspoints having dropped on 2*2 matrix if wherein there are three buttonsUpper, at this moment just there will be the 4th " Ghost Key " (" terrible Key "). Industry is keyboard to the way of " Ghost Key "Control IC and shielded this kind of input by the mode of software. But all can use group more than triple bond in a lot of occasionsClose, at this moment just have to redesign for different combinations the arrangement mode of key-press matrix, needSome combinations of wanting are not placed in the matrix of any one 2*2, will but can become other key combinationCan not be used in combination thereby drop in the matrix of 2*2, cause the limitation of key combination mode, particularly existIn game, use very inconvenient.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of keyboard FPC, this FPCPreparation method in the second FPC adopt printing technology twice, utilize electrocondution slurry to be printed as equivalenceResistance, has realized the resistance adjustability of equivalent resistance, coordinates circuit function can realize well elimination " ghostKey " function, the keyboard that makes to utilize the method to be made is easy to use.
For achieving the above object, the invention provides a kind of preparation method of keyboard FPC, it comprise withLower step:
Step 1, provide three plastic sheetings, be respectively used to make the first FPC, space bar andTwo FPCs, described three plastic sheetings are: first to the 3rd plastic sheeting;
Step 2, provide silver slurry, and utilize silver slurry on first plastic sheeting, to print first by normal processCircuit pattern, is made into the first FPC, utilizes second plastic sheeting system according to normal process simultaneouslyMake space bar;
Step 3, utilization silver slurry print second circuit pattern, described second circuit on the 3rd plastic sheetingPattern is provided with the place of number place equivalent resistance to be printed;
Step 4, provide electrocondution slurry, utilize electrocondution slurry to mould at the 3rd that is printed with second circuit patternOn material film, the place of equivalent resistance to be printed is printed as required equivalent resistance, completes the second FPCMaking.
Described the first circuit pattern is complete circuit pattern.
The manufacture craft of described step 2 central dividing plate is specially corresponding on second plastic sheeting as requiredPlace several contact perforates are set.
The resistance of the required equivalent resistance in the place of the equivalent resistance to be printed that described second circuit pattern is provided withValue size is set according to actual needs.
In described step 4, the thickness of printing conductive slurry and width are according to the resistance size of required equivalent resistanceArrange.
In described step 4, the model of electrocondution slurry is selected according to the resistance size of required equivalent resistance.
Described plastic sheeting is polyester film.
Beneficial effect of the present invention: the preparation method of keyboard FPC of the present invention adopts printing skill twiceArt is made FPC, and wherein, the second FPC adopts the side of printing conductive slurry thereonMethod is printed equivalent resistance, can be by choosing the electrocondution slurry of different model and adjusting printing conductive slurryThickness and width regulate the resistance size of equivalent resistance, realize equivalent resistance resistance controllability and canModulability, then coordinate circuit function can avoid well the generation of " Ghost Key " phenomenon, making to utilize shouldThe keyboard that method is made is easy to use.
In order further to understand feature of the present invention and technology contents, refer to following relevant the present inventionDetailed description and accompanying drawing, but accompanying drawing only provide with reference to and explanation use, be not used for the present invention to be limitSystem.
Brief description of the drawings
Below in conjunction with accompanying drawing, by the specific embodiment of the present invention is described in detail, will make skill of the present inventionArt scheme and other beneficial effect are apparent.
In accompanying drawing,
Fig. 1 is the flow chart of the preparation method of keyboard FPC of the present invention;
Fig. 2 adopts FPC that the preparation method of keyboard FPC of the present invention is madeStructural representation;
Fig. 3 is the part enlarged diagram of FPC in Fig. 2.
Detailed description of the invention
Technological means and the effect thereof taked for further setting forth the present invention, below in conjunction with of the present inventionPreferred embodiment and accompanying drawing thereof are described in detail.
Refer to Fig. 1 and 3, the invention provides a kind of preparation method of keyboard FPC, comprise following stepRapid:
Step 1, provide three plastic sheetings, be respectively used to make the first FPC, space bar andTwo FPCs, described three plastic sheetings are: first to the 3rd plastic sheeting.
Described plastic sheeting is preferably polyester film (PET, Polyethyleneterephthalate), its toolThere are good abrasion performance frictional property, dimensional stability and electrical insulating property, can effectively extend making of productUse the life-span.
Step 2, provide silver slurry, and utilize silver slurry on first plastic sheeting, to print first by normal processCircuit pattern 12, is made into the first FPC 10, utilizes second plastics thin according to normal process simultaneouslyFilm production space bar (not shown).
As shown in Figure 2, described the first circuit pattern 12 is complete, existing circuit pattern, according to existingIn technology, utilize silver slurry to be printed onto on first plastic sheeting, form the first FPC 10. AndThe manufacture craft of described space bar is specially the place of correspondence setting on second plastic sheeting as requiredSeveral contact perforates, while being assembled into keyboard, it is soft that described space bar is assembled in the first FPC 10 and secondProperty wiring board 20 between, ensure that the first FPC 10 insulate mutually with the second FPC 20, and pass throughOn keyboard, the extruding of button and this several contact perforates can make the first FPC 10 and second softWiring board 20 correspondence positions are conducted, and complete the input of button.
Step 3, utilization silver slurry print second circuit pattern 22, described the second electricity on the 3rd plastic sheetingRoad pattern 22 is provided with the place of number place equivalent resistance 24 to be printed.
By the equivalent resistance 24 of the place printing of equivalent resistance 24 to be printed on described second circuit pattern 22Resistance size set according to actual needs.
Step 4, provide electrocondution slurry, utilize electrocondution slurry being printed with the 3rd of second circuit pattern 22On plastic sheeting, the place of equivalent resistance 24 to be printed is printed as required equivalent resistance 24, completes second softThe making of wiring board 20.
In this step, utilize electrocondution slurry to be printed as equivalent resistance in the place of equivalent resistance 24 to be printed24, the thickness of this printing conductive slurry and width arrange according to the resistance size of required equivalent resistance 24; AndAnd the model of required electrocondution slurry is also to select according to the resistance size of required equivalent resistance 24. DescribedThe Standard resistance range of required equivalent resistance 24 is preferably 4.2K-6K.
The different resistance of the place of equivalent resistance 24 to be printed printing resistance on second circuit pattern 22, thenCoordinate circuit function, by detecting current and voltage can calculate exactly supress simultaneously that several byKey, avoids the generation of " Ghost Key " phenomenon, and the keyboard that makes to utilize the method to be made is easy to use.
In sum, the invention provides a kind of preparation method of keyboard FPC, it adopts seal twiceBrush technology is made FPC, and wherein, the second FPC adopts printing conductive slurry thereonMethod print equivalent resistance, can by choose different model electrocondution slurry and adjust printing conductiveThe thickness of slurry and width regulate the resistance size of equivalent resistance, realize the controllability of equivalent resistance resistanceAnd controllability, then coordinate circuit function can avoid well the generation of " Ghost Key " phenomenon, make to get profitThe keyboard being made by the method is easy to use.
The above, for the person of ordinary skill of the art, can be according to technical side of the present inventionCase and technical conceive are made other various corresponding changes and distortion, and all these changes and distortion are all answeredBelong to the protection domain of the claims in the present invention.
Claims (7)
1. a preparation method for keyboard FPC, is characterized in that, comprises the following steps:
Step 1, provide three plastic sheetings, be respectively used to make the first FPC, space bar andTwo FPCs, described three plastic sheetings are: first to the 3rd plastic sheeting;
Step 2, provide silver slurry, and utilize silver slurry on first plastic sheeting, to print first by normal processCircuit pattern, is made into the first FPC, utilizes second plastic sheeting system according to normal process simultaneouslyMake space bar;
Step 3, utilization silver slurry print second circuit pattern, described second circuit on the 3rd plastic sheetingPattern is provided with the place of number place equivalent resistance to be printed;
Step 4, provide electrocondution slurry, utilize electrocondution slurry to mould at the 3rd that is printed with second circuit patternOn material film, the place of equivalent resistance to be printed is printed as required equivalent resistance, completes the second FPCMaking;
The resistance of the described equivalent resistance that print in the place of equivalent resistance to be printed on second circuit pattern is notWith.
2. the preparation method of keyboard FPC as claimed in claim 1, is characterized in that, describedOne circuit pattern is complete circuit pattern.
3. the preparation method of keyboard FPC as claimed in claim 2, is characterized in that, described stepThe manufacture craft of rapid 2 central dividing plates is specially the place of correspondence setting on second plastic sheeting as requiredSeveral contact perforates.
4. the preparation method of keyboard FPC as claimed in claim 1, is characterized in that, describedThe resistance size basis of the required equivalent resistance in the place of the equivalent resistance to be printed that two circuit patterns are provided withActual needs is set.
5. the preparation method of keyboard FPC as claimed in claim 4, is characterized in that, described stepIn rapid 4, the thickness of printing conductive slurry and width arrange according to the resistance size of required equivalent resistance.
6. the preparation method of keyboard FPC as claimed in claim 5, is characterized in that, described stepIn rapid 4, the model of electrocondution slurry is selected according to the resistance size of required equivalent resistance.
7. the preparation method of keyboard FPC as claimed in claim 1, is characterized in that, described in mouldMaterial film is polyester film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310159492.4A CN103298266B (en) | 2013-05-02 | 2013-05-02 | The preparation method of keyboard FPC |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310159492.4A CN103298266B (en) | 2013-05-02 | 2013-05-02 | The preparation method of keyboard FPC |
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| Publication Number | Publication Date |
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| CN103298266A CN103298266A (en) | 2013-09-11 |
| CN103298266B true CN103298266B (en) | 2016-05-04 |
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| CN201310159492.4A Expired - Fee Related CN103298266B (en) | 2013-05-02 | 2013-05-02 | The preparation method of keyboard FPC |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876203A (en) * | 2017-03-09 | 2017-06-20 | 联想(北京)有限公司 | A kind of method of keyboard, electronic equipment and manufacture keyboard |
| CN109727804A (en) * | 2017-10-30 | 2019-05-07 | 致伸科技股份有限公司 | Keyboard |
| CN109994334B (en) * | 2017-12-29 | 2020-12-04 | 致伸科技股份有限公司 | Keyboard with a keyboard body |
| CN110650579B (en) * | 2018-06-26 | 2020-11-10 | 深圳市璞瑞达薄膜开关技术有限公司 | Radio frequency circuit layer structure and circuit printing method thereof |
| CN110650583B (en) * | 2018-06-26 | 2020-11-10 | 深圳市璞瑞达薄膜开关技术有限公司 | Communication circuit layer structure and circuit printing method thereof |
| CN111031695B (en) * | 2019-12-30 | 2021-05-28 | 广德新三联电子有限公司 | Production process of LED keyboard circuit board |
| CN113035626A (en) * | 2020-12-22 | 2021-06-25 | 贵州航天凯山石油仪器有限公司 | Method for manufacturing ultrathin keyboard on control panel of oil field low-voltage testing instrument |
| CN114816081B (en) * | 2022-04-29 | 2023-10-24 | 长沙锐逸微电子有限公司 | Low-cost high-reliability keyboard implementation method |
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| CN1582089A (en) * | 2003-08-05 | 2005-02-16 | 精模电子科技（深圳）有限公司 | Method for manufacturing soft circuit board |
| CN200947202Y (en) * | 2006-04-03 | 2007-09-12 | 新巨企业股份有限公司 | Keyboard capable of canceling ghost key |
| TWM377824U (en) * | 2009-09-18 | 2010-04-01 | Shu-Yuan Zhan | Thin film circuit board structure for keyboard |
| TW201112292A (en) * | 2009-09-18 | 2011-04-01 | Abbahome Inc | Keyboard and thin-film multi-layer circuit board thereof |
| TW201312941A (en) * | 2011-09-01 | 2013-03-16 | Zippy Tech Corp | Keyboard signal generation circuit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202230928U (en) * | 2011-08-31 | 2012-05-23 | 东莞市博锐自动化科技有限公司 | Keyboard membrane circuit board circuit structure capable of preventing ghost key |
| US20130093605A1 (en) * | 2011-10-17 | 2013-04-18 | Ching-Te CHEN | Signal generation circuit for keyboards |
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2013
- 2013-05-02 CN CN201310159492.4A patent/CN103298266B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1582089A (en) * | 2003-08-05 | 2005-02-16 | 精模电子科技（深圳）有限公司 | Method for manufacturing soft circuit board |
| CN200947202Y (en) * | 2006-04-03 | 2007-09-12 | 新巨企业股份有限公司 | Keyboard capable of canceling ghost key |
| TWM377824U (en) * | 2009-09-18 | 2010-04-01 | Shu-Yuan Zhan | Thin film circuit board structure for keyboard |
| TW201112292A (en) * | 2009-09-18 | 2011-04-01 | Abbahome Inc | Keyboard and thin-film multi-layer circuit board thereof |
| TW201312941A (en) * | 2011-09-01 | 2013-03-16 | Zippy Tech Corp | Keyboard signal generation circuit |
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| CN103298266A (en) | 2013-09-11 |
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Granted publication date: 20160504 Termination date: 20180502 |