CN204833206U - Pressure touch -control unit and touch -sensitive display device - Google Patents
Pressure touch -control unit and touch -sensitive display device Download PDFInfo
- Publication number
- CN204833206U CN204833206U CN201520527155.0U CN201520527155U CN204833206U CN 204833206 U CN204833206 U CN 204833206U CN 201520527155 U CN201520527155 U CN 201520527155U CN 204833206 U CN204833206 U CN 204833206U
- Authority
- CN
- China
- Prior art keywords
- touch
- sensitive grid
- resistance strain
- pressure touch
- circuit board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a pressure touch -control unit, including flexible circuit board and the resistance strain gauge of setting on the flexible circuit board, the flexible circuit board includes the base plate and sets up the conducting wire on the base plate, resistance strain gauge directly form on the base plate of flexible circuit board and with the electrically conductive line electrically connected of flexible circuit board. The utility model discloses still relate to the touch -sensitive display device who uses above -mentioned pressure touch -control unit. Above -mentioned pressure touch -control unit direct with the resistance strain gauge among traditional piezoresistive sensor integrated with the flexible circuit board, with traditional piezoresistive sensor through paste, mode such as welding compares with the flexible circuit board stationary phase, fish tail, the scheduling problem of buckling of having avoided transportation, encapsulation in -process probably to cause, easy to operate more simultaneously, the resistance strain gauge's of being convenient for counterpoint is favorable to mass production's requirement.
Description
Technical field
The utility model belongs to touch-control display field, relates to a kind of touch control display apparatus, also relates to a kind of pressure touch unit with pressure sensing effect be applied in touch control display apparatus.
Background technology
Along with day by day popularizing of intelligent electronic device such as touch-screen mobile phone etc., human-computer interaction is not only confined on two dimensional surface.Add pressure transducer on an electronic device, electronic equipment can be made to experience the pressing dynamics of operator, widened the interactivity of man-machine interface, enhanced the experience of user.
Along with the development of modernization industrial technology, various types of pressure sensing technology is applied to electronic equipment and gets more and more, wherein pressure transducer is the piezoresistive pressure sensor based on resistance variations pressure sensor, the price extremely low because of it and higher precision and preferably linear characteristic and be subject to extensive concern.Key element in piezoresistive pressure sensor, resistance strain gage, before being applied to the electronic equipments such as mobile phone, needs resistance strain gage to utilize conducting resin material to be pasted onto on insulating substrate, then is fixed in electronic equipment by the mode such as bonding by insulating substrate.Because this mode is difficult to insulating substrate accurately be located the correct position needing sensed pressure in the electronic device, the unavoidable problem such as cause contraposition inaccurate, these factors also finally cause yield low, and properties of product reduce, and are difficult to meet the requirement of producing in enormous quantities.
Utility model content
Based on this, be necessary for the problems referred to above, provide a kind of and promote yield and properties of product, be convenient to the pressure touch unit manufactured, and apply the touch control display apparatus of this pressure touch unit.
A kind of pressure touch unit, comprise flexible PCB and be arranged on the resistance strain gage on flexible PCB, described flexible PCB comprises substrate and is arranged on the conducting wire on substrate, and the substrate that described resistance strain gage is formed directly into flexible PCB is electrically connected with the conducting wire of flexible PCB.
Above-mentioned pressure touch unit directly by the resistance strain gage in traditional piezoresistive transducer and flexible PCB integrated, with traditional piezoresistive transducer by mode and flexible PCB Stationary liquid ratios such as pasting, weld, avoid the problem such as scuffing, bending that may cause in transport, encapsulation process, be more prone to operation simultaneously, be convenient to the contraposition of resistance strain gage, be conducive to the requirement of producing in enormous quantities.On the other hand, the gross thickness of the pressure touch unit obtained in this way is lower, advantageously in the assembling of touch control display apparatus, and is more suitable for the lightening development trend of the touch control display apparatus such as mobile phone.
Wherein in an embodiment, described resistance strain gage comprises the sensitive grid be formed on substrate and the insulating protective layer covering sensitive grid, and the two ends of described sensitive grid are electrically connected with conducting wire.
Wherein in an embodiment, described sensitive grid is electrically connected with conducting wire and forms wheatstone bridge circuits.
Wherein in an embodiment, described sensitive grid is by constantan sensitive grid, nickel-chrome sensitive grid, nichrome aluminum alloy sensitive grid or Aludirome sensitive grid.
Wherein in an embodiment, described flexible PCB arranges splicing ear, for being connected with touch chip.
A kind of touch control display apparatus, comprises above-mentioned pressure touch unit.
Wherein in an embodiment, also comprise display module, described pressure touch unit is arranged on the side of display module away from user.
Accompanying drawing explanation
The structural representation of the pressure touch unit that Fig. 1 provides for the utility model one embodiment.
Fig. 2 is the part-structure schematic diagram of the resistance strain gage in the unit of pressure touch shown in Fig. 1.
The stressed schematic diagram of its touch-screen when the pressure touch unit application that Fig. 3 provides for one embodiment of the invention is to touch control display apparatus.
Embodiment
A kind of pressure touch unit that the utility model provides, it can be applicable to the touch control display apparatus such as mobile phone, panel computer, interactive electronic display screen.As shown in Figure 1, the pressure touch unit of one embodiment comprises flexible PCB 10 and is arranged on the resistance strain gage 20 on flexible PCB 10, described flexible PCB 20 comprises substrate 11 and arranges conducting wire 12 on the substrate 11, and the substrate 11 that described resistance strain gage 20 is formed directly into flexible PCB 10 is electrically connected with the conducting wire 12 of flexible PCB 10.
The substrate 11 of flexible PCB 20 can be sandwich construction, and conducting wire 12 can be formed in wherein on a laminar substrate 11, also can be formed on multiple substrates 11 of different layers.Flexible PCB 20 has a splicing ear 13, can be formed be connected by splicing ear 13 with peripheral cell such as touch chip etc.When in this pressure touch unit application to the touch control display apparatus such as mobile phone, the flexible PCB 10 of pressure touch unit can realize signal conduction with the touch chip in touch control display apparatus by this splicing ear 13, thus has the function of pressure sensitive touch-control.The pressure touch unit that the present embodiment provides can be arranged on the side of the display module in touch control display apparatus away from user.Resistance strain gage 20 can as required sensed pressure part and arrange multiple, and be configured in the correct position in touch control display apparatus, within the scope of such as, display screen in touch control display apparatus, or the outer periphery etc. of touch control display apparatus.The main part of the flexible PCB 10 shown in Fig. 1 is roughly in H shape, and comprise two parallel the first branches and connect the second branch of the first branch, splicing ear 13 is extended by the second branch, and bearing of trend is parallel with the first branch.
In one embodiment, resistance strain gage 20 is four, is distributed in the end of two the first branches.Resistance strain gage 20 is arranged on wherein on a laminar substrate 11, when substrate 11 is multilayer, preferably on an outermost laminar substrate 11.Resistance strain gage 20 is critical components of piezoresistive transducer.Resistance strain gage 20 essence is a resistive element, and after stressed generation strain, its resistance changes.By by resistance strain gage 20 place in circuit structure, the change of its stressed size can react the change to the electric signal in circuit structure, such as resistance, electric current, voltage etc.By catching and carrying out analyzing and processing electric signal, can detect pressure signal.
Resistance strain gage 20 in the present embodiment comprises formation sensitive grid 21 on the substrate 11 and the insulating protective layer (not shown) of covering sensitive grid 21, and the two ends 210 of described sensitive grid 21 are electrically connected with conducting wire 12.As shown in Figure 2, the sensitive grid 21 of resistance strain gage 20 is bent to form palisade by resistance wire, and its two ends 210 are electrically connected for being formed with the conducting wire 12 on flexible PCB 10, to form specific circuit structure.
In one embodiment, by described sensitive grid 21 is electrically connected formation wheatstone bridge circuits with conducting wire 12, after the stressed change of sensitive grid 21, corresponding voltage signal can be exported by wheatstone bridge circuits.Such as, when this pressure touch unit is not stressed, described wheatstone bridge circuits reaches electrobalance, when sensitive grid 21 is subject to extraneous different pressures, then the balance of wheatstone bridge circuits is broken, and exports corresponding voltage signal, is for further processing to voltage signal by touch chip, such as amplification, analog to digital conversion etc., can accurately know according to this voltage signal the pressure signal that pressure touch unit accepts.
The size of described sensitive grid 21, resistance, putting position and distribution design according to the pressure requirements of required sensing, can realize multistage pressure sensing, also can realize multipoint pressure sensing or subregion pressure-sensing.Multistage touch-control refers to and pressing dynamics is carried out classification, as heavy three grades in light, or 1-10 totally ten grades, during by detecting different dynamics pressings, sensitive grid 21 produces different change in resistance, thus makes touch control display apparatus realize different feedback effectss.
Multi-point touch, when namely there is the push action of 2 or more above touch control display apparatus, by the size of sensitive grid 21, the arrangement of position, in conjunction with the algorithm of integrated circuit (IC), reads the force value of every bit respectively.Such as, for Fig. 3, four sensitive grids P1, P2, P3 and P4 lay respectively at the point midway of four peripheries of the touch-screen of touch control display apparatus.With the touch-screen lower left corner for true origin sets up Descartes's rectangular coordinate system, with the touch-screen limit at sensitive grid P4 place for x-axis, with the touch-screen limit at sensitive grid P1 place for y-axis.The length of touch-screen in x-axis is L; The length of touch-screen in y-axis is H.The position coordinates of four sensitive grids P1, P2, P3 and P4 is respectively (0, H/2), (L/2, H), (L, H/2), (L/2,0).The present embodiment is that the situation of 2 touch operation points is to illustrate that touch-screen obtains the computation process of touch operation pressure with touch operation event.It is A point and B point respectively that touch operation is counted, in the position of touch-screen as shown in Figure 3.When touch operation is positioned at A point, described four sensitive grids are in pressured state; When touch operation is positioned at B point, when being namely in outside prismatic that four sensitive grids form, sensitive grid P1 and sensitive grid P2 is in pressured state, and sensitive grid P3 and sensitive grid P4 is in tension state.After touch operation event occurs, touch-screen utilizes the capacitive touch control unit in touch control display apparatus can obtain the coordinate of A point and B point, is respectively (x1, y2) and (x2, y2); Touch-screen obtains the measured value of four sensitive grids by pressure touch unit, is respectively P1, P2, P3 and P4.Corresponding touch operation position A point to be calculated and the touch operation pressure of B point are respectively F1 and F2.Ignore the gravity of touch-screen, respectively centered by the position of sensitive grid P1, P2, P3 and P4, following equation can be obtained according to principle of moment balance:
In addition, according to the feature of stress balance, be applied to the power on sensitive grid and the power that equals to detect and, i.e. P1+P2+P3+P4=F1+F2.By the method for above-mentioned 5 equations and minimum secondary variance matrix inversion, touch-screen can calculate the size of touch operation pressure F1 and F2 of corresponding touch operation position A point and B point.The touch-screen of the present embodiment has 4 sensitive grids, can obtain any touch operation to count the size of touch operation pressure of the situation being less than or equal to 4 by said method.
Subregion touch-control, namely by the size of sensitive grid, the arrangement of position, in conjunction with the algorithm of IC, carry out Region dividing on the touchscreen, detect the force value in each region respectively, be divided into left and right screen as touch-screen crosses, during bimanualness, detect the pressing dynamics on right-hand man respectively, as detected the force value in two dotted line frame regions in Fig. 1 respectively.
Described sensitive grid 21 can be made up of constantan, nickel-chrome, nichrome aluminum alloy or Aludirome.In the present embodiment, adopt depositing operation, sensitive grid 21 is directly produced on the substrate 11 of flexible PCB 10 by the techniques such as such as sputtering, evaporation.The sensitive grid 21 made is formed with the conducting wire 12 on flexible PCB 10 and is electrically connected.
The utility model directly by pressure resistance type sensitive grid by deposition method and flexible PCB integrated, mode and flexible PCB Stationary liquid ratios such as pasting, weld is passed through with adopting traditional piezoresistive transducer, avoid the problem such as scuffing, bending, contraposition that may cause in transport, encapsulation process, be more prone to operation simultaneously, be conducive to the requirement of producing in enormous quantities.On the other hand, the gross thickness of the pressure touch unit obtained in this way is lower, advantageously in the assembling of touch control display apparatus.
The utility model also provides a kind of method for making of above-mentioned pressure touch unit, and step comprises:
Substrate is provided;
Substrate makes conducting wire; And
At making resistor on base plate foil gauge, wherein resistance strain gage is electrically connected with conducting wire.
Wherein, the step making resistance strain gage comprises employing depositing operation and form sensitive grid on substrate, and forms insulating protective layer on sensitive grid.Depositing operation can be such as sputter, the technique such as evaporation.When the substrate of flexible PCB is sandwich construction, preferably on outermost substrate, form described resistance strain gage.
In certain embodiments, first can form conducting wire on substrate, then form resistance strain gage.Also first can form resistance strain gage on substrate, then form conducting wire.The technique that substrate is formed conducting wire can adopt plating or etching etc.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this instructions is recorded.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (7)
1. a pressure touch unit, it is characterized in that the resistance strain gage comprising flexible PCB and be arranged on flexible PCB, described flexible PCB comprises substrate and is arranged on the conducting wire on substrate, and the substrate that described resistance strain gage is formed directly into flexible PCB is electrically connected with the conducting wire of flexible PCB.
2. pressure touch unit according to claim 1, is characterized in that, described resistance strain gage comprises the sensitive grid be formed on substrate and the insulating protective layer covering sensitive grid, and the two ends of described sensitive grid are electrically connected with conducting wire.
3. pressure touch unit according to claim 2, is characterized in that, described sensitive grid is electrically connected with conducting wire and forms wheatstone bridge circuits.
4. pressure touch unit according to claim 2, is characterized in that, described sensitive grid is by constantan sensitive grid, nickel-chrome sensitive grid, nichrome aluminum alloy sensitive grid or Aludirome sensitive grid.
5. pressure touch unit according to claim 1, is characterized in that, described flexible PCB arranges splicing ear, for being connected with touch chip.
6. a touch control display apparatus, comprises the pressure touch unit in claim 1-5 item described in any one.
7. touch control display apparatus according to claim 6, is characterized in that, also comprises display module, and described pressure touch unit is arranged on the side of display module away from user.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520527155.0U CN204833206U (en) | 2015-07-20 | 2015-07-20 | Pressure touch -control unit and touch -sensitive display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520527155.0U CN204833206U (en) | 2015-07-20 | 2015-07-20 | Pressure touch -control unit and touch -sensitive display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204833206U true CN204833206U (en) | 2015-12-02 |
Family
ID=54690784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520527155.0U Expired - Fee Related CN204833206U (en) | 2015-07-20 | 2015-07-20 | Pressure touch -control unit and touch -sensitive display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204833206U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867693A (en) * | 2016-04-25 | 2016-08-17 | 厦门天马微电子有限公司 | Touch display panel and touch display device |
| CN105955535A (en) * | 2016-05-13 | 2016-09-21 | 上海天马微电子有限公司 | Display panel |
| CN106371672A (en) * | 2016-10-24 | 2017-02-01 | 上海天马微电子有限公司 | Flexible display panel and device |
| TWI585654B (en) * | 2016-11-02 | 2017-06-01 | 友達光電股份有限公司 | Touch sensing apparatus |
| CN108089736A (en) * | 2016-11-14 | 2018-05-29 | 谷歌有限责任公司 | For sensing equipment input by user |
| US10247970B2 (en) | 2016-12-20 | 2019-04-02 | Microsoft Technology Licensing, Llc | Measuring strain on display device |
| US10352789B2 (en) | 2017-02-09 | 2019-07-16 | Microsoft Technology Licensing, Llc | Measuring strain on display device |
-
2015
- 2015-07-20 CN CN201520527155.0U patent/CN204833206U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867693A (en) * | 2016-04-25 | 2016-08-17 | 厦门天马微电子有限公司 | Touch display panel and touch display device |
| CN105867693B (en) * | 2016-04-25 | 2019-01-25 | 厦门天马微电子有限公司 | A kind of touch-control display panel and touch control display apparatus |
| CN105955535A (en) * | 2016-05-13 | 2016-09-21 | 上海天马微电子有限公司 | Display panel |
| CN105955535B (en) * | 2016-05-13 | 2019-05-14 | 上海天马微电子有限公司 | A kind of display panel |
| CN106371672A (en) * | 2016-10-24 | 2017-02-01 | 上海天马微电子有限公司 | Flexible display panel and device |
| US10461135B2 (en) | 2016-10-24 | 2019-10-29 | Shanghai Tianma Micro-electronics Co., Ltd. | Flexible display panel and fabrication method thereof, and flexible display device |
| CN106371672B (en) * | 2016-10-24 | 2024-04-19 | 上海天马微电子有限公司 | Flexible display panel and device |
| TWI585654B (en) * | 2016-11-02 | 2017-06-01 | 友達光電股份有限公司 | Touch sensing apparatus |
| CN108089736A (en) * | 2016-11-14 | 2018-05-29 | 谷歌有限责任公司 | For sensing equipment input by user |
| US10247970B2 (en) | 2016-12-20 | 2019-04-02 | Microsoft Technology Licensing, Llc | Measuring strain on display device |
| US10352789B2 (en) | 2017-02-09 | 2019-07-16 | Microsoft Technology Licensing, Llc | Measuring strain on display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204833206U (en) | Pressure touch -control unit and touch -sensitive display device | |
| CN105224129B (en) | A kind of pressure-sensing input unit | |
| CN110192172B (en) | Pressure induction type structure and electronic product | |
| CN207019619U (en) | Strain transducer and electronic equipment in the display stacking of electronic equipment | |
| CN105378609B (en) | Contact panel with pressing detecting function | |
| CN204926052U (en) | Touch display apparatus | |
| CN204461655U (en) | Optically transparent force snesor and there is the electronic equipment of optically transparent force snesor | |
| CN105094449B (en) | A kind of pressure-sensing input module | |
| CN105320354A (en) | A three-dimensional touch apparatus | |
| CN105117055A (en) | Touch pressed type three-dimensional signal input device, application method and multi-functional touch control panel | |
| CN101458581B (en) | Touch control display device and touch control method thereof | |
| CN205158318U (en) | Touch display device | |
| CN108089736A (en) | For sensing equipment input by user | |
| CN106775055A (en) | Flexible touch screen and flexible touch display screen | |
| CN205080530U (en) | Pressure sensing input device | |
| CN105404430B (en) | 3D pressure-sensitive touch screen, manufacturing method thereof and 3D pressure-sensitive touch implementation method | |
| CN105549791A (en) | Display panel with pressure induction function and touch control function | |
| CN106855756A (en) | Functional glass cover lid | |
| CN205318345U (en) | Function glass shroud | |
| CN106293188A (en) | A kind of contact panel | |
| CN205334402U (en) | Pressure sensing input device | |
| CN106708300A (en) | Pressure touch unit, manufacture method therefore, and touch display device | |
| CN105992938A (en) | Input device and input device production method | |
| CN204695285U (en) | Display device and touch-screen thereof | |
| CN205121509U (en) | Three -dimensional touch devices |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20180720 |