CN102520825B - FPC (Flexible Printed Circuit) interface circuit compatible with capacitance and resistance touch screens and design method of FPC interface circuit - Google Patents
FPC (Flexible Printed Circuit) interface circuit compatible with capacitance and resistance touch screens and design method of FPC interface circuit Download PDFInfo
- Publication number
- CN102520825B CN102520825B CN201210010485.3A CN201210010485A CN102520825B CN 102520825 B CN102520825 B CN 102520825B CN 201210010485 A CN201210010485 A CN 201210010485A CN 102520825 B CN102520825 B CN 102520825B
- Authority
- CN
- China
- Prior art keywords
- fpc
- compatible
- circuit
- pin
- screen
- 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.)
- Active
Links
Landscapes
- Position Input By Displaying (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention relates to the technical field of FPC (Flexible Printed Circuit) interface circuits of touch screens, in particular to an FPC interface circuit compatible with capacitance and resistance touch screens and a design method of the FPC interface circuit. The FPC interface circuit comprises an FPC and a PCB (Printed Circuit Board) which are connected with a touch screen; the FPC is connected with the PCB through an FPC connector, the FPC is integrated with an FPC compatible circuit, the PCB is integrated with a compatible control switching circuit, and the FPC compatible circuit is electrically connected with the compatible control switching circuit. The PCB of the FPC interface circuit can be matched with a capacitance type touch screen for use, and also can be matched with a resistance type touch screen for use, thus the PCBs can be volume-produced without being influenced by forms of the touch screens, what kinds of touch screens can be determined to be matched according to market demands during marketing, the production mode is flexible and the production efficiency is increased.
Description
Technical field
The present invention relates to the FPC interface circuit technical field of touch-screen, particularly relate to FPC interface circuit and the method for designing thereof of a kind of compatible with capacitance formula and resistive touch screen.
Background technology
Touch-screen can be divided into resistance-type, condenser type, infrared-type, surface acoustic wave Four types by the difference of its principle of work, contacting more in real life is resistance-type and capacitive touch-screen, as the touch-screen of the electronic equipments such as panel computer, mobile phone, GPS.
Resistive touch screen (RTP) includes two conductive layers, when by finger or other object touch screen, two conductive layers come in contact, resistance changes, controller judges contact coordinate according to the concrete change of resistance, the connection of usual resistive touch screen and controller interface circuit is 4 line formulas, comprises Xl, Xr, Yu and Yd, is respectively the wiring of left and right, the upper and lower coordinate data of the corresponding touch screen in transmission touch point.Capacitive touch screen (CTP) utilizes the electric current of human body to respond to carry out work, when pointing near touch screen surface, finger and touch screen surface form a coupling capacitance, now point and to siphon away a faint electric current from contact, controller flows to the size of current of this contact according to touch-screen four limit, calculate contact coordinate, the connection of usual capacitive touch screen and controller interface circuit is 6 line formulas, comprise SDA, SCL, nRST, nIRQ, VCC and GND, wherein SDA is the wiring of transmission touch point coordinate data.
No matter capacitive touch screen or resistive touch screen, its touch-screen is all by FPC(flexible PCB) be connected with PCB, PCB is provided with controller and controller interface circuit, because resistive touch screen is different from the connected mode of controller interface circuit with capacitive touch screen, traditional resistive touch screen and the PCB of capacitive touch screen can not use mutually, the manufacturer produced with the electronic equipment of touch-screen is made to need to design different FPC and PCB for capacitive touch screen and resistive touch screen, but in actual production, cannot know customer order is condenser type or resistive touch screen, usually can only after client places an order, according to the corresponding PCB of Order Type regenerative ratio, the manufacturing is restricted.
To sum up, FPC interface circuit and the method for designing thereof of a kind of compatible with capacitance formula and resistive touch screen is urgently provided, to solve the problems of the technologies described above.
Summary of the invention
An object of the present invention is the FPC interface circuit providing a kind of compatible with capacitance formula and resistive touch screen for the deficiencies in the prior art, it comprises FPC compatible circuit and compatible control commutation circuit, FPC compatible circuit is integrated with the FPC circuit of compatible touch screens and the FPC circuit of compatible with capacitance screen, the compatible commutation circuit that controls is integrated with the control commutation circuit of compatible with capacitance screen and the control commutation circuit of compatible touch screens, PCB of the present invention can be made both can to have arranged in pairs or groups with capacitive touch screen use, can arrange in pairs or groups with resistive touch screen again and use, thus can PCB be produced in enormous quantities and not affect by the form of touch-screen, and can decide according to market demand which kind of touch-screen of arranging in pairs or groups when selling, the mode of production is flexible.
Two of object of the present invention is the method for designing of the FPC interface circuit providing a kind of compatible with capacitance formula and resistive touch screen for the deficiencies in the prior art, the design's method is by FPC compatible circuit and the compatible design controlling commutation circuit, the PCB of the touch-screen with this compatible design is made not to be subject to the restriction of touch-screen form on the market, enhance productivity, can decide according to market demand which kind of touch-screen of arranging in pairs or groups when selling, the mode of production is flexible simultaneously.
For achieving the above object, the present invention is achieved through the following technical solutions.
The FPC interface circuit of a kind of compatible with capacitance formula and resistive touch screen, comprise touch-screen, FPC and PCB, touch-screen is connected with FPC, FPC is connected with PCB by FPC connector, described FPC is integrated with FPC compatible circuit, and described FPC compatible circuit comprises the FPC circuit of compatible with capacitance screen and the FPC circuit of compatible touch screens; Described PCB is integrated with compatible control commutation circuit, and described compatibility controls commutation circuit and comprises the control commutation circuit of compatible with capacitance screen and the control commutation circuit of compatible touch screens; Described FPC compatible circuit controls commutation circuit with compatibility and is electrically connected.
Wherein, described FPC is provided with some the connection circuitry connecting touch-screen and FPC connector, the described FPC circuit of compatible with capacitance screen and several connection circuitry of FPC circuit multiplexer of described compatible touch screens.
Further, the FPC circuit of described compatible with capacitance screen comprises 6 connection circuitry be arranged on FPC, is respectively SDA, SCL, nRST, nIRQ, VCC and GND; The FPC circuit of described compatible touch screens comprises 4 connection circuitry be arranged on FPC, is respectively Xl, Xr, Yu and Yd; Wherein 4 connection circuitry of 6 connection circuitry of the FPC circuit of the multiplexing described compatible with capacitance screen of 4 connection circuitry of the FPC circuit of described compatible touch screens.
Further, described FPC connector comprises 6 end pin, be respectively end pin one, two, three, four, five, six, the end pin one, two, three, four of the described control commutation circuit of compatible with capacitance screen and the multiplexing FPC connector of control commutation circuit of described compatible touch screens; SCL, SDA, nIRQ, nRST, VCC of the FPC circuit of described compatible with capacitance screen are connected with the end pin one, two, three, four, five, six of FPC connector respectively with GND; Xl, Yu, Xr of the FPC circuit of described compatible touch screens are connected with the end pin one, two, three, four of FPC connector respectively with Yd.
Further, the control commutation circuit of described compatible touch screens comprises exclusion RA16, electric capacity C155, C156, C157, C158, TVS pipe D15, D16, D17, D18, 1 pin of RA16 connects second end of D15 and the end pin one of FPC connector, 2 pin of RA16 connect the end pin two of second end of D16 and the FPC connector of CON3, 3 pin of RA16 connect the end pin three of second end of D17 and the FPC connector of CON3, 4 pin of RA16 connect the end pin four of second end of D18 and the FPC connector of CON3, D15, D16, D17, the first termination GND of D18, 5 pin of RA16 connect one end of C155, another termination GND of C155, 6 pin of RA16 connect one end of C156, another termination GND of C156, 7 pin of RA16 connect one end of C157, another termination GND of C157, 8 pin of RA16 connect one end of C158, another termination GND of C158, 5 of RA16, 6, 7, 8 pin are connected with controller interface circuit respectively.
Further, the control commutation circuit of described compatible with capacitance screen comprises exclusion RA22, resistance R110, R111, R113, 1 pin of RA22 connects the end pin one of FPC connector, 2 pin of RA22 connect the end pin two of FPC connector, 3 pin of RA22 connect the end pin three of FPC connector, 4 pin of RA22 connect the end pin four of FPC connector, 6 pin of RA22 connect one end of R113, another termination LCD_VDD of R113, 7 pin of RA22 connect one end of R111, another termination LCD_VDD of R111, 8 pin of RA22 connect one end of R110, another termination LCD_VDD of R110, the end pin five of FPC connector meets LCD_VDD, the end pin six of FPC connector meets GND, described LCD_VDD is the output terminal of the LCD mu balanced circuit of liquid crystal display module.5,6,7,8 pin of RA22 are connected with controller interface circuit respectively.
Further, the Standard resistance range of described R110, R111, R113 is 1K ~ 100K Ω.
Further, described FPC connector is the connector CON3 of 42PIN pin, and the PIN 5 that the end pin one, two, three, four, five, six of described FPC connector is connected respectively the PIN 37,38,39,40,4,5, connector CON3 of device CON3 meets GND.
Further, described LCD mu balanced circuit comprises integrated circuit U16, electric capacity C149, C150, C151, resistance R108; 1 pin of U16 meets first end and the VSYS of C149, the second termination GND of C149,2 pin of U16 meet GND, 3 pin of U16 meet LCD_POWER_EN, and 4 pin of U16 connect the first end of C150, the second termination GND of C150,5 pin of U16 meet the first end of C151, the first end of R108 and LCD_VDD, the second termination GND of the second termination GND of C151, R108, described U16 are BL9193.
A method for designing for the FPC connector interface of compatible with capacitance screen and touch screens, includes following steps:
A. for capacitance plate and the touch screens of compatibility, the FPC connector interface type of compatible with capacitance screen and touch screens is determined;
B. design FPC compatible circuit, described FPC compatible circuit comprises the FPC circuit of compatible with capacitance screen and the FPC circuit of compatible touch screens, several connection circuitry of the described FPC circuit of compatible with capacitance screen and the FPC circuit multiplexer FPC of described compatible touch screens;
C. design is compatible controls commutation circuit, and described compatibility controls commutation circuit and comprises the control commutation circuit of compatible with capacitance screen and the control commutation circuit of compatible touch screens; The compatible commutation circuit that controls is connected with controller by control unit interface, and controller by different control ports, then comes control capacitance screen or touch screens through the control commutation circuit of compatible with capacitance screen or the control commutation circuit of compatible touch screens;
D. control commutation circuit according to the FPC compatible circuit in step B and the compatibility in step C and determine FPC connector, FPC compatible circuit controls commutation circuit by described FPC connector with compatibility and is connected.
Wherein, described FPC compatible circuit is integrated on FPC, and described compatibility controls commutation circuit and is integrated on PCB.
Further, described FPC compatible circuit and described compatibility control several end pin of the multiplexing described FPC connector of commutation circuit.
Beneficial effect of the present invention is: the FPC interface circuit of a kind of compatible with capacitance formula and resistive touch screen, comprise FPC and PCB be connected with touch-screen, FPC is connected with PCB by FPC connector, described FPC is integrated with FPC compatible circuit, and described FPC compatible circuit comprises the FPC circuit of compatible with capacitance screen and the FPC circuit of compatible touch screens; Described PCB is integrated with compatible control commutation circuit, and described compatibility controls commutation circuit and comprises the control commutation circuit of compatible with capacitance screen and the control commutation circuit of compatible touch screens; Described FPC compatible circuit controls commutation circuit with compatibility and is electrically connected.FPC compatible circuit of the present invention comprises the connection circuitry that some connect touch-screen and FPC connector, the FPC circuit of compatible with capacitance screen and FPC circuit multiplexer wherein several connection circuitry of described compatible touch screens, i.e. several end pin of the FPC circuit of compatible with capacitance screen and the FPC circuit multiplexer FPC connector of described compatible touch screens, make the FPC with FPC compatible circuit of the present invention both may be used for the connection of capacitive touch screen and FPC connector, may be used for again the connection of resistive touch screen and FPC connector.Compatibility of the present invention is controlled commutation circuit and is connected with controller by controller interface circuit, and controller by different control ports, then comes control capacitance screen or touch screens through the control commutation circuit of compatible with capacitance screen or the control commutation circuit of compatible touch screens.When PCB contact resistance formula touch-screen of the present invention, the control commutation circuit that controller controls compatible touch screens makes the FPC circuit of compatible touch screens be in using state, thus controls resistive touch screen; Equally, when PCB of the present invention connects capacitive touch screen, the FPC circuit that the control commutation circuit that controller controls compatible with capacitance screen makes compatible with capacitance shield is in using state, thus controls capacitive touch screen.Therefore PCB of the present invention both can arrange in pairs or groups with capacitive touch screen and use, can arrange in pairs or groups with resistive touch screen again and use, thus can PCB be produced in enormous quantities and not affect by the form of touch-screen, and can decide according to market demand which kind of touch-screen of arranging in pairs or groups when selling, the mode of production is flexible.
The method for designing of the FPC connector interface of a kind of compatible with capacitance screen and touch screens, by designing FPC compatible circuit and design compatible control commutation circuit on PCB on FPC, make the PCB of touch panel device of the present invention can not be subject to the restriction of touch-screen form, this PCB both can arrange in pairs or groups with capacitive touch screen and use, can arrange in pairs or groups with resistive touch screen again and use, and can decide according to market demand which kind of touch-screen of arranging in pairs or groups when selling.
Accompanying drawing explanation
The present invention is further illustrated to utilize accompanying drawing below, but the embodiment in accompanying drawing does not form any limitation of the invention.
Fig. 1 is frame structure schematic diagram of the present invention.
Fig. 2 is the schematic diagram of FPC compatible circuit of the present invention.
Fig. 3 is the schematic diagram of the control commutation circuit of compatible touch screens of the present invention.
Fig. 4 is the schematic diagram of the control commutation circuit of compatible with capacitance of the present invention screen.
Fig. 5 is the schematic diagram of LCD mu balanced circuit of the present invention.
Fig. 6 is the schematic diagram of connector CON3 of the present invention.
Include in Fig. 1 to Fig. 6:
1---touch-screen, 2---FPC compatible circuit, 3---compatible control commutation circuit, 4---FPC connector;
11,12,13,14,15,16---end pin one, two, three, four, five, six;
21---the FPC circuit of compatible with capacitance screen;
22---the FPC circuit of compatible touch screens;
31---the control commutation circuit of compatible touch screens;
32---the control commutation circuit of compatible with capacitance screen.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
As shown in Figures 1 to 6, the FPC interface circuit of a kind of compatible with capacitance formula and resistive touch screen, comprise FPC and PCB be connected with touch-screen 1, FPC is connected with PCB by FPC connector 4, described FPC is integrated with FPC compatible circuit 2, and described FPC compatible circuit 2 comprises the FPC circuit 21 of compatible with capacitance screen and the FPC circuit 22 of compatible touch screens; Described PCB is integrated with compatible control commutation circuit 3, and described compatibility controls commutation circuit 3 and comprises the control commutation circuit 31 of compatible with capacitance screen and the control commutation circuit 32 of compatible touch screens; Described FPC compatible circuit 2 controls commutation circuit 3 with compatibility and is electrically connected.FPC compatible circuit 2 of the present invention comprises the connection circuitry that some connect touch-screen 1 and FPC connector 4, the FPC circuit 21 of compatible with capacitance screen and multiplexing wherein several connection circuitry of FPC circuit 22 of described compatible touch screens, i.e. several end pin of the FPC circuit 21 of compatible with capacitance screen and the multiplexing FPC connector of FPC circuit 22 4 of described compatible touch screens, make the FPC with FPC compatible circuit 2 of the present invention both may be used for the connection of capacitive touch screen and FPC connector 4, may be used for again the connection of resistive touch screen and FPC connector 4.Compatibility of the present invention is controlled commutation circuit 3 and is connected with controller by controller interface circuit, controller by different control ports, then comes control capacitance screen or touch screens through the control commutation circuit 31 of compatible with capacitance screen or the control commutation circuit 32 of compatible touch screens.When PCB contact resistance formula touch-screen of the present invention, the control commutation circuit 32 that controller controls compatible touch screens makes the FPC circuit 22 of compatible touch screens be in using state, thus controls resistive touch screen; Equally, when PCB of the present invention connects capacitive touch screen, the FPC circuit 21 that the control commutation circuit 31 that controller controls compatible with capacitance screen makes compatible with capacitance shield is in using state, thus controls capacitive touch screen.Therefore PCB of the present invention both can arrange in pairs or groups with capacitive touch screen and use, can arrange in pairs or groups with resistive touch screen again and use, thus can PCB be produced in enormous quantities and not affect by the form of touch-screen 1, and can decide according to market demand which kind of touch-screen 1 of arranging in pairs or groups when selling, the mode of production is flexible.
Wherein, described FPC is provided with some the connection circuitry connecting touch-screen 1 and FPC connector 4, the described FPC circuit 21 of compatible with capacitance screen and FPC circuit 22 several connection circuitry multiplexing of described compatible touch screens.
Further, the FPC circuit 21 of described compatible with capacitance screen comprises 6 connection circuitry be arranged on FPC, is respectively SDA, SCL, nRST, nIRQ, VCC and GND; The FPC circuit 22 of described compatible touch screens comprises 4 connection circuitry be arranged on FPC, is respectively Xl, Xr, Yu and Yd; Wherein 4 connection circuitry of 6 connection circuitry of the FPC circuit 21 of the multiplexing described compatible with capacitance screen of 4 connection circuitry of the FPC circuit 22 of described compatible touch screens.
It should be noted that, the present embodiment is described with the FPC interface circuit of compatible 6 line formula capacitance plates and 4 line formula touch screens, but the present invention is not limited only to this.For increasing the function of capacitance plate or touch screens, those skilled in the art set up the wiring with controller interface circuit usually on the basis of 6 line formula capacitance plates or 4 line formula touch screens, make the touch screens of its capacitance plate becoming 7 lines or 5 lines, certainly capacitance plate or the touch screens of other modes of connection is also had, the similar conventional design means being improved to those skilled in the art, according to thought of the present invention, basis of the present invention adopt conventional improvement can realize the FPC interface circuit of compatible 7 line formula capacitance plates and 5 line formula touch screens, therefore the present embodiment repeats no more the compatible design of other form capacitance plates and touch screens.
Further, as shown in Figure 2, described FPC connector 4 comprises 6 end pin, be respectively end pin one, two, three, four, five, 6 11,12,13,14,15,16, the described control commutation circuit 31 of compatible with capacitance screen and the end pin one, two, three, 4 11,12,13,14 of the multiplexing FPC connector 4 of control commutation circuit 32 of described compatible touch screens; SCL, SDA, nIRQ, nRST, VCC of the FPC circuit 21 of described compatible with capacitance screen are connected with the end pin one, two, three, four, five, 6 11,12,13,14,15,16 of FPC connector 4 respectively with GND; Xl, Yu, Xr of the FPC circuit 22 of described compatible touch screens are connected with the end pin one, two, three, 4 11,12,13,14 of FPC connector 4 respectively with Yd.
Further, as shown in Figure 3, the control commutation circuit 32 of described compatible touch screens comprises exclusion RA16, electric capacity C155, C156, C157, C158, TVS pipe (transient voltage suppressor diode) D15, D16, D17, D18, 1 pin of RA16 connects second end of D15 and the end pin 1 of FPC connector 4, 2 pin of RA16 connect the end pin 2 12 of second end of D16 and the FPC connector 4 of CON3, 3 pin of RA16 connect the end pin 3 13 of second end of D17 and the FPC connector 4 of CON3, 4 pin of RA16 connect the end pin 4 14 of second end of D18 and the FPC connector 4 of CON3, D15, D16, D17, the first termination GND of D18, 5 pin of RA16 connect one end of C155, another termination GND of C155, 6 pin of RA16 connect one end of C156, another termination GND of C156, 7 pin of RA16 connect one end of C157, another termination GND of C157, 8 pin of RA16 connect one end of C158, another termination GND of C158, 5 of RA16, 6, 7, 8 pin are connected with controller interface circuit respectively.Wherein C155, C156, C157, C158 are 102 ± 10%X7R, D15, D16, D17, D18 be ESD9X5V-2/TR.
Further, as shown in Figure 4, the control commutation circuit 31 of described compatible with capacitance screen comprises exclusion RA22, resistance R110, R111, R113, 1 pin of RA22 connects the end pin 1 of FPC connector 4, 2 pin of RA22 connect the end pin 2 12 of FPC connector 4, 3 pin of RA22 connect the end pin 3 13 of FPC connector 4, 4 pin of RA22 connect the end pin 4 14 of FPC connector 4, 6 pin of RA22 connect one end of R113, another termination LCD_VDD of R113, 7 pin of RA22 connect one end of R111, another termination LCD_VDD of R111, 8 pin of RA22 connect one end of R110, another termination LCD_VDD of R110, the end pin 5 15 of FPC connector 4 meets LCD_VDD, the end pin 6 16 of FPC connector 4 meets GND, described LCD_VDD is the output terminal of the LCD mu balanced circuit of liquid crystal display module.5,6,7,8 pin of RA22 are connected with controller interface circuit respectively.
Further, the Standard resistance range of described R110, R111, R113 is 1K ~ 100K Ω, and the resistance of R110, R111 is the resistance of 2.2K Ω, R113 is particularly 10K Ω.
Further, as shown in Figure 6, described FPC connector 4 is the connector CON3 of 42PIN pin, the PIN 5 that the end pin one, two, three, four, five, 6 11,12,13,14,15,16 of described FPC connector 4 is connected respectively the PIN 37,38,39,40,4,5, connector CON3 of device CON3 meets GND.The GND of FPC circuit 21 that compatible with capacitance shields is connected with the PIN 5 of connector CON3, is conducive to anti-interference, makes the touch better effects if of touch-screen 1.
Further, as shown in Figure 5, described LCD mu balanced circuit comprises integrated circuit U16, electric capacity C149, C150, C151, resistance R108; 1 pin of U16 meets first end and the VSYS of C149, the second termination GND of C149,2 pin of U16 meet GND, 3 pin of U16 meet LCD_POWER_EN, and 4 pin of U16 connect the first end of C150, the second termination GND of C150,5 pin of U16 meet the first end of C151, the first end of R108 and LCD_VDD, the second termination GND of the second termination GND of C151, R108, described U16 are BL9193.
A method for designing for FPC connector 4 interface of compatible with capacitance screen and touch screens, includes following steps:
A. for capacitance plate and the touch screens of compatibility, FPC connector 4 interface type of compatible with capacitance screen and touch screens is determined;
B. FPC compatible circuit 2 is designed, described FPC compatible circuit 2 comprises the FPC circuit 21 of compatible with capacitance screen and the FPC circuit 22 of compatible touch screens, the described FPC circuit 21 of compatible with capacitance screen and several connection circuitry of the multiplexing FPC of FPC circuit 22 of described compatible touch screens;
C. design is compatible controls commutation circuit 3, and described compatibility controls commutation circuit 3 and comprises the control commutation circuit 31 of compatible with capacitance screen and the control commutation circuit 32 of compatible touch screens; The compatible commutation circuit 3 that controls is connected with controller by control unit interface, and controller by different control ports, then comes control capacitance screen or touch screens through the control commutation circuit 31 of compatible with capacitance screen or the control commutation circuit 32 of compatible touch screens;
D. control commutation circuit 3 according to the FPC compatible circuit 2 in step B and the compatibility in step C and determine that FPC connector 4, FPC compatible circuit 2 controls commutation circuit 3 by described FPC connector 4 with compatibility and is connected.
Wherein, described FPC compatible circuit 2 is integrated on FPC, and described compatibility controls commutation circuit 3 and is integrated on PCB.
Further, described FPC compatible circuit 2 and described compatibility control several end pin of the multiplexing described FPC connector 4 of commutation circuit 3.
The method for designing of FPC connector 4 interface of this compatible with capacitance screen and touch screens, by designing FPC compatible circuit 2 and design compatible control commutation circuit 3 on PCB on FPC, make the PCB of touch panel device of the present invention can not be subject to the restriction of touch-screen 1 form, this PCB both can arrange in pairs or groups with capacitive touch screen and use, can arrange in pairs or groups with resistive touch screen again and use, and can decide according to market demand which kind of touch-screen 1 of arranging in pairs or groups when selling.
Above content is only preferred embodiment of the present invention, and for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, this description should not be construed as limitation of the present invention.
Claims (10)
1. the FPC interface circuit of a compatible with capacitance formula and resistive touch screen, comprise FPC and PCB connecting touch-screen, FPC is connected with PCB by FPC connector, it is characterized in that: described FPC is integrated with FPC compatible circuit, described FPC compatible circuit comprises the FPC circuit of compatible with capacitance screen and the FPC circuit of compatible touch screens; Described PCB is integrated with compatible control commutation circuit, and described compatibility controls commutation circuit and comprises the control commutation circuit of compatible with capacitance screen and the control commutation circuit of compatible touch screens; Described FPC compatible circuit controls commutation circuit with compatibility and is electrically connected;
Described FPC is provided with some the connection circuitry connecting touch-screen and FPC connector, the described FPC circuit of compatible with capacitance screen and several connection circuitry of FPC circuit multiplexer of described compatible touch screens;
The FPC circuit of described compatible with capacitance screen comprises 6 connection circuitry be arranged on FPC, is respectively SDA, SCL, nRST, nIRQ, VCC and GND; The FPC circuit of described compatible touch screens comprises 4 connection circuitry be arranged on FPC, is respectively Xl, Xr, Yu and Yd; Wherein 4 connection circuitry of 6 connection circuitry of the FPC circuit of the multiplexing described compatible with capacitance screen of 4 connection circuitry of the FPC circuit of described compatible touch screens.
2. the FPC interface circuit of compatible with capacitance formula according to claim 1 and resistive touch screen, it is characterized in that: described FPC connector comprises 6 end pin, be respectively end pin one, two, three, four, five, six, the end pin one, two, three, four of the described control commutation circuit of compatible with capacitance screen and the multiplexing FPC connector of control commutation circuit of described compatible touch screens; SCL, SDA, nIRQ, nRST, VCC of the FPC circuit of described compatible with capacitance screen are connected with the end pin one, two, three, four, five, six of FPC connector respectively with GND; Xl, Yu, Xr of the FPC circuit of described compatible touch screens are connected with the end pin one, two, three, four of FPC connector respectively with Yd.
3. the FPC interface circuit of compatible with capacitance formula according to claim 2 and resistive touch screen, it is characterized in that: the control commutation circuit of described compatible touch screens comprises exclusion RA16, electric capacity C155, C156, C157, C158, TVS pipe D15, D16, D17, D18, 1 pin of RA16 connects second end of D15 and the end pin one of FPC connector, 2 pin of RA16 connect the end pin two of second end of D16 and the FPC connector of connector CON3, 3 pin of RA16 connect the end pin three of second end of D17 and the FPC connector of connector CON3, 4 pin of RA16 connect the end pin four of second end of D18 and the FPC connector of connector CON3, D15, D16, D17, the first termination GND of D18, 5 pin of RA16 connect one end of C155, another termination GND of C155, 6 pin of RA16 connect one end of C156, another termination GND of C156, 7 pin of RA16 connect one end of C157, another termination GND of C157, 8 pin of RA16 connect one end of C158, another termination GND of C158, 5 of RA16, 6, 7, 8 pin are connected with controller interface circuit respectively.
4. the FPC interface circuit of compatible with capacitance formula according to claim 3 and resistive touch screen, is characterized in that: the control commutation circuit of described compatible with capacitance screen comprises exclusion RA22, resistance R110, R111, R113, 1 pin of RA22 connects the end pin one of FPC connector, 2 pin of RA22 connect the end pin two of FPC connector, 3 pin of RA22 connect the end pin three of FPC connector, 4 pin of RA22 connect the end pin four of FPC connector, 6 pin of RA22 connect one end of R113, another termination LCD_VDD of R113, 7 pin of RA22 connect one end of R111, another termination LCD_VDD of R111, 8 pin of RA22 connect one end of R110, another termination LCD_VDD of R110, the end pin five of FPC connector meets LCD_VDD, the end pin six of FPC connector meets GND, described LCD_VDD is the output terminal of the LCD mu balanced circuit of liquid crystal display module, 5,6,7,8 pin of RA22 are connected with controller interface circuit respectively.
5. the FPC interface circuit of compatible with capacitance formula according to claim 4 and resistive touch screen, is characterized in that: the Standard resistance range of described R110, R111, R113 is 1K ~ 100K Ω.
6. the FPC interface circuit of compatible with capacitance formula according to claim 4 and resistive touch screen, it is characterized in that: described FPC connector is the connector CON3 of 42PIN pin, the PIN 5 that the end pin one, two, three, four, five, six of described FPC connector is connected respectively the PIN 37,38,39,40,4,5, connector CON3 of device CON3 meets GND.
7. the FPC interface circuit of compatible with capacitance formula according to claim 4 and resistive touch screen, is characterized in that: described LCD mu balanced circuit comprises integrated circuit U16, electric capacity C149, C150, C151, resistance R108; 1 pin of U16 meets first end and the VSYS of C149, the second termination GND of C149,2 pin of U16 meet GND, 3 pin of U16 meet described touch-screen power supply LCD_POWER_EN and hold, and 4 pin of U16 connect the first end of C150, the second termination GND of C150,5 pin of U16 meet the first end of C151, the first end of R108 and LCD_VDD, the second termination GND of the second termination GND of C151, R108, described U16 are BL9193.
8. a method for designing for the FPC connector interface circuit of compatible with capacitance screen and touch screens, is characterized in that: include following steps:
For capacitance plate and the touch screens of compatibility, determine the FPC connector interface type of compatible with capacitance screen and touch screens;
Design FPC compatible circuit, described FPC compatible circuit comprises the FPC circuit of compatible with capacitance screen and the FPC circuit of compatible touch screens, several connection circuitry of the described FPC circuit of compatible with capacitance screen and the FPC circuit multiplexer FPC of described compatible touch screens;
Design is compatible controls commutation circuit, and described compatibility controls commutation circuit and comprises the control commutation circuit of compatible with capacitance screen and the control commutation circuit of compatible touch screens; The compatible commutation circuit that controls is connected with controller by control unit interface, and controller by different control ports, then comes control capacitance screen or touch screens through the control commutation circuit of compatible with capacitance screen or the control commutation circuit of compatible touch screens;
Control commutation circuit by compatibility and determine FPC connector, FPC compatible circuit controls commutation circuit by described FPC connector with compatibility and is connected.
9. the method for designing of the FPC connector interface circuit of a kind of compatible with capacitance screen according to claim 8 and touch screens, is characterized in that: described FPC compatible circuit is integrated on FPC, and described compatibility controls commutation circuit and is integrated on PCB.
10. the method for designing of the FPC connector interface circuit of a kind of compatible with capacitance screen according to claim 8 or claim 9 and touch screens, is characterized in that: described FPC compatible circuit and described compatibility control several end pin of the multiplexing described FPC connector of commutation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210010485.3A CN102520825B (en) | 2012-01-13 | 2012-01-13 | FPC (Flexible Printed Circuit) interface circuit compatible with capacitance and resistance touch screens and design method of FPC interface circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210010485.3A CN102520825B (en) | 2012-01-13 | 2012-01-13 | FPC (Flexible Printed Circuit) interface circuit compatible with capacitance and resistance touch screens and design method of FPC interface circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102520825A CN102520825A (en) | 2012-06-27 |
| CN102520825B true CN102520825B (en) | 2015-04-22 |
Family
ID=46291776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210010485.3A Active CN102520825B (en) | 2012-01-13 | 2012-01-13 | FPC (Flexible Printed Circuit) interface circuit compatible with capacitance and resistance touch screens and design method of FPC interface circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102520825B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104092476B (en) | 2014-05-27 | 2017-06-13 | 西安中兴新软件有限责任公司 | A kind of compatible circuit and terminal |
| CN105554742B (en) * | 2015-12-08 | 2018-12-28 | 南京熊猫电子股份有限公司 | A kind of WAPI modular circuit and encryption method for realizing RFID coded communication |
| CN106843569A (en) * | 2016-12-30 | 2017-06-13 | 歌尔科技有限公司 | A kind of touch control system and a kind of virtual reality device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261552A (en) * | 2007-03-09 | 2008-09-10 | 洋华光电股份有限公司 | Combined touch control induction device |
| CN101689088A (en) * | 2007-06-21 | 2010-03-31 | 诺基亚公司 | Touch sensor and method for operating a touch sensor |
| CN202433862U (en) * | 2012-01-13 | 2012-09-12 | 广东远峰电子科技有限公司 | Flexible printed circuit board (FPC) interface circuit capable of being compatible with capacitive and resistive touch panels |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2555088A1 (en) * | 2010-03-29 | 2013-02-06 | Sharp Kabushiki Kaisha | Display device having touch panel functionality |
-
2012
- 2012-01-13 CN CN201210010485.3A patent/CN102520825B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261552A (en) * | 2007-03-09 | 2008-09-10 | 洋华光电股份有限公司 | Combined touch control induction device |
| CN101689088A (en) * | 2007-06-21 | 2010-03-31 | 诺基亚公司 | Touch sensor and method for operating a touch sensor |
| CN202433862U (en) * | 2012-01-13 | 2012-09-12 | 广东远峰电子科技有限公司 | Flexible printed circuit board (FPC) interface circuit capable of being compatible with capacitive and resistive touch panels |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102520825A (en) | 2012-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102338945B (en) | Touch liquid crystal display and color filter substrate | |
| CN105301822B (en) | A kind of array substrate, display panel and display device | |
| CN106406603A (en) | Touch screen panel and display device comprising the same | |
| CN106790811B (en) | Display screen drive system and mobile terminal | |
| CN105426030A (en) | Touch panel and display device | |
| CN102520825B (en) | FPC (Flexible Printed Circuit) interface circuit compatible with capacitance and resistance touch screens and design method of FPC interface circuit | |
| CN103268174B (en) | Capacitance touching control module and capacitance type touch control screen | |
| CN102479014B (en) | The touch apparatus of application flexibility circuit board | |
| CN109828691A (en) | Touch screen and electronic equipment for narrow frame electronic equipment | |
| CN103197789B (en) | Contact panel | |
| CN202433862U (en) | Flexible printed circuit board (FPC) interface circuit capable of being compatible with capacitive and resistive touch panels | |
| CN103369822B (en) | Inverse plugging flexible printed circuit board and wiring method thereof | |
| CN205281452U (en) | Integrated touch -control display panel and integrated touch -sensitive display device | |
| CN207909097U (en) | The touch screen and terminal device of tin indium oxide film layer structure | |
| CN102478993B (en) | Electronic device | |
| CN102567265B (en) | Touch module switching circuit for all-in-one computer | |
| CN101551722B (en) | Touch-control panel structure with signal processing chips | |
| CN201259597Y (en) | Flexible display panel | |
| CN102214044B (en) | Integrated touch display structure and manufacturing method thereof | |
| CN203574934U (en) | PCB board | |
| CN206627935U (en) | Touch-control display module and electronic equipment | |
| CN104345926A (en) | Touch panel and testing method thereof | |
| CN104678236A (en) | Panel testing device | |
| CN103914193A (en) | Capacitive touch screen | |
| CN103677368A (en) | Connected structure formed by touch panel and flexible printed circuit board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGGUAN YF TECHNOLOGY LIMITED Free format text: FORMER OWNER: GUANGDONG YF TECHNOLOGY LIMITED Effective date: 20150116 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150116 Address after: 5, building 523808, building A, 18 industrial East Road, Songshan hi tech Industrial Development Zone, Guangdong, Dongguan, China Applicant after: Dongguan YF Technology Co., Ltd. Address before: 523808 Guangdong province Dongguan City Songshan Lake Science and Technology Industrial Park No. 9, Room 308, Guangdong Keyuan song Yuanfeng Electronic Technology Co. Ltd. Applicant before: Guangdong Yuanfeng Electronic Technology Co., Ltd. |
|
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191224 Address after: Room 101, Room 201 and Room 401, No. 18 Industrial East Road, Songshan Lake Park, Dongguan City, Guangdong Province Patentee after: Guangdong Yuan Feng automotive electronics company limited Address before: 5, building 523808, building A, 18 industrial East Road, Songshan hi tech Industrial Development Zone, Guangdong, Dongguan, China Patentee before: Dongguan YF Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP03 | Change of name, title or address |
Address after: No.18, Industrial Road East, Songshanhu Park, Dongguan, Guangdong 523000 Patentee after: Yuanfeng Technology Co.,Ltd. Address before: Room 101, 201, 401, building 1, No. 18, Gongye East Road, Songshanhu Park, Dongguan City, Guangdong Province 523000 Patentee before: GUANGDONG YUANFENG AUTOMOBILE ELECTRONIC Co.,Ltd. |
|
| CP03 | Change of name, title or address |