CN101329612B - Infrared ray transmitting and receiving circuit unit for infrared ray touch screen - Google Patents
Infrared ray transmitting and receiving circuit unit for infrared ray touch screen Download PDFInfo
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- CN101329612B CN101329612B CN2007100286795A CN200710028679A CN101329612B CN 101329612 B CN101329612 B CN 101329612B CN 2007100286795 A CN2007100286795 A CN 2007100286795A CN 200710028679 A CN200710028679 A CN 200710028679A CN 101329612 B CN101329612 B CN 101329612B
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- row
- infrared
- driver
- circuit board
- board unit
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Abstract
The invention discloses an infrared transmitting and receiving circuit board unit which comprises infrared transmitting tubes or receiving tubes arranged in array. The circuit board unit is provided with a power wire, a ground wire and a clock signal wire which run through the whole circuit board unit; one end of the circuit board unit is provided with a column driver and a row driver, wherein, a signal input port of the column driver is connected with the clock signal wire and a signal output port thereof is connected with the signal input port of the row driver; the row drive wires of all infrared transmitting tubes or receiving tubes in the array are connected with the row driver respectively through row control triodes and the column drive wires are respectively connected with the column control wires of the column driver. The infrared transmitting and receiving circuit board unit has simple design and structure, reliable performance, high integration, low production cost and high consistency and reliability during production on a large scale, can be produced on a large scale extensively, greatly improves the efficiency of product development and design, reduces the upfront investment cost of products, increases the speed of the upgrade of products and adds and expands the type of products.
Description
Technical field
The present invention relates to utilize infrared, receive the technical field of the touching device that photoelectric device makes up.
Background technology
Infrared ray touching technique development so far, comparative maturity says that from technical standpoint principle is very simple technically, but will produce the various sizes high resolving power touch-screen particularly difficulty that just seems.In the prior art, as Fig. 1, United States Patent (USP) 5 shown in Figure 2,162, in 783, all control circuits of infrared ray touching device comprise infrared, receiving tube, infrared, receiving circuit and microprocessor etc. all are to be integrated on the housing printed circuit board (PCB) on every side of touch-screen, and be connected with computer by RS232 serial ports or USB mouth, because infrared, receiving tube must be connected on the sweep circuit, if can cause infrared to circuit cutting wherein, received signal can't be delivered in the circuit of microprocessor or its corresponding connection, when at the large-scale infrared touch panel of design, prior art need be with whole emission, receiving array is divided into the several sections redesign, increase infrared according to screen-sized, the number of receiver pope and control circuit thereof, and each independent sector need interconnect, and need control each independent sector by microprocessor and finish scan control and coordinate setting, the coordinate with interceptor uploads on the computer then.Because the complicacy of circuit design of the prior art, when each different size design of touch panel, circuit must will be changed substantially, then the required printed circuit board (PCB) of product is redesigned and makes.Because above variety of problems, limited the production and selling that infrared ray touches product to a great extent, more can't make infrared ray touch product and enter into the level that family reaches popular popularization and application.
Summary of the invention
The objective of the invention is will be for the complicacy of simplifying infrared, circuit board for receiving design and making, shorten the cycle of developing new product, provide fairly simple infrared, a receiving circuit unit, can design infrared, the circuit board for receiving of different size easily, so that adapt to the touch-screen of different size.
Technical solution of the present invention is:
A kind of infrared transmitter plate unit, comprise the infrared emission tube that array is provided with, this circuit board unit is provided with power lead, ground wire and the clock cable that connects entire circuit plate unit, one end of circuit board unit is provided with line driver and row driver, wherein the signal input port of line driver connects clock cable, and signal output port connects the signal input port of row driver; The column drive wire of each infrared emission tube in the array is connected with row driver by row control triode respectively, and row drive wire is connected with the capable control line of line driver respectively.
A kind of infrared radiation receiving circuit plate unit, comprise the infrared receiver tube that array is provided with, this circuit board unit is provided with power lead, ground wire, clock cable and the infrared ray received signal line that connects entire circuit plate unit, one end of circuit board unit is provided with line driver and row driver, wherein the signal input port of line driver connects clock cable, and signal output port connects the signal input port of row driver; The column drive wire of each infrared receiver tube in the array is connected with row driver by row control triode respectively, and row drive wire is connected with the capable control line of line driver respectively.
Every infrared transmitter plate unit comprises power lead, ground wire, the clock cable that is extended to the other end by an end of circuit board, every infrared radiation receiving circuit plate unit comprises power lead, ground wire, clock cable and the infrared ray received signal line that is extended to the other end by an end of circuit board, adjacent two circuit board units can be respectively realized splicing by the corresponding wiring of welding, and wherein power lead and ground wire are formerly to be used to provide the whole touch screen device needed power circuit; OK, row driver is distributed in a wherein end at the two ends of circuit board unit, the purpose of using this laying method is in order to constitute the infrared that can cut or receiving circuit board unit, because in emission, infrared in the receiving circuit board unit or receiving tube connect with array way, has only this laying method of use, when when wiring board cuts, lead on the printed circuit board (PCB) is after cutting, horizontal drive circuit in the array, column drive circuit is unaffected, and after cutting, be placed with row, one section printed circuit board (PCB) of row driver still can be by row, coupled all infrared or the receiving tube of row driver control gating, and also just becoming one, this section printed board unit is different from original standard-sized infrared or receiving circuit board unit, this unit can be used for splicing with other circuit board unit, thereby draws a new size.Can be as required, produce the circuit board unit of equal length, every infrared transmitter plate unit or receiving circuit board unit all design on the permissible during fabrication maximum sized circuit board of circuit board, all be provided with the row and the row driver of identical number on the circuit board unit of each same size, its circuit design is identical, so can reuse.When the touch-screen of Development and Production different size, can be according to the size of display screen, earlier identical circuit board unit is spliced into a maximum sized circuit board less than display screen width or height, and then cut out the circuit board unit of surplus size size, interconnect by the circuit board unit of connecting line the different length size, adopt this mode can more save cost, the construction cycle of new product is also shorter simultaneously.
The two ends of infrared, receiving circuit board unit are provided with the soldering opening that is connected with adjacent circuit plate unit, can utilize connecting line that adjacent soldering opening is connected, can utilize default soldering opening can finish circuit board and circuit board each other be connected work.The soldering opening of radiating circuit plate unit includes power lead, ground wire, clock cable as mentioned above, the soldering opening of receiving circuit board unit includes, power lead, ground wire, clock cable, and infrared ray received signal line, adjacent two circuit board units can be realized splicing by the corresponding connecting line of welding respectively.Wherein power lead and ground wire are formerly to be used to provide the whole touch screen device needed power circuit; Have at least one group row, column driver can be arranged on the optional position of circuit board unit.
At the line driver described in infrared or the receiving circuit board unit, row driver respectively has an input end of clock mouth, the input end of clock mouth of line driver links to each other with clock generator, the one-period that this clock generator produced is capable control line of pulse signal each gating of control of T, this row control line is again by triode or directly control a row drive wire in the gating array, behind the gating of finishing n capable control line successively, promptly behind n clock period T, it is the nxT pulse signal that the output terminal of clock mouth of line driver produces one-period, this pulse signal is input to the input end of clock mouth of row driver, make the next row control line of each gating of row driver, so circulation all row and scanning of row in finishing whole infrared or receiving array.The row, column driver that only utilizes all connections of a clock signal line traffic control is the simplest project organization to the sequential scanning gating method of the infrared in the array, receiving tube, advantages such as that this forwarding method has is fastest, the switch time-delay is short, the line number is few are fit to be applied to large-scale infrared touch panel device.Because what the input end of clock mouth of the line driver on radiating circuit plate unit and the receiving circuit board unit was used is same clock signal, so the scanning of the every pair of emission, receiving tube is synchronous.Wherein said line driver, row driver are selected for use can be counter (Counter), shift register (Shift Register) or have the integrated circuit that is equal to effect, as programmable chip.
On each radiating circuit plate unit, be provided with the infrared pulse signal wire that is connected with described row control triode, the infrared emission tube that when emission array begins to scan each is switched on sends the infrared ray that has frequency, promptly improves the antijamming capability of infrared wave.
The row, column drive wire that is connected with each infrared in the array or receiving tube is connected with the row, column driver by row, column control triode respectively, the emitter of each row control triode connects row drive wire, base stage connects the control line of line driver, and collector connects power lead; The collector of row control triode connects column drive wire, base stage connects the control line of row driver, emitter connects infrared pulse signal wire or infrared ray received signal line or ground wire, use triode to be equivalent to on-off action and may command raising current driving ability, avoid the excessive infringement that circuit is caused of load of row, column driver IC.The triode that connects the row, column drive wire in circuit board unit of the present invention in related infrared, the receiving array is the NPN type, simultaneously also can select to use positive-negative-positive, the corresponding change of emitter and collector connected mode of row, column triode, but no matter use which kind of triode, its objective is the current driving ability and the switch conduction effect that improve the row, column drive wire.If in use effectively then use the PNP high level effectively then to use NPN if the control line of row, column controller is output as low level.Different but the variation this connected mode of the connected mode of NPN and PNP does not influence and utilizes the emission of row, column driver control scanned infrared line, receiving array final purpose.
Advantage of the present invention is: project organization is simple, dependable performance, integrated level height, production cost are low, can be in enormous quantities, produce on a large scale.The present invention compares with existing touch panel device technology, because the present invention has improved the product development design efficiency greatly, reduce the early investment cost of product, improve the speed of model change and the kind that can unrestrictedly increase and expand product, and the consistance when product is produced in enormous quantities is strong, the reliability height.
Description of drawings
Accompanying drawing 1 is the infrared or the circuit board for receiving design drawing of prior art;
Accompanying drawing 2 is the infrared or the circuit board for receiving design drawing of prior art
Accompanying drawing 3 is an embodiment of the invention middle infrared (Mid-IR) touch screen circuitry plate unit cutting synoptic diagram;
Accompanying drawing 4 is an embodiment of the invention middle infrared (Mid-IR) touch screen circuitry plate unit splicing synoptic diagram;
Accompanying drawing 5 is the circuit theory diagrams of the radiating circuit plate unit in the embodiment of the invention middle infrared (Mid-IR) touch-screen;
1, touch-screen, 2, the infrared array, 3, the infrared ray receiving array, 4, the infrared transmitter plate unit of standard, 5, radiating circuit plate unit after 6 cuttings, 7, standard infrared radiation receiving circuit plate unit, 8, infrared radiation receiving circuit plate unit after 9 cuttings, 10, infrared emission tube in the array, 11, infrared receiver tube in the array, 12, line driver, 13, row driver, 14, the cable soldering opening, 15, infrared ray received signal line, 16, clock cable, 17, the infrared pulse signal wire, 18, power lead, 18, ground wire, 20, row control triode, 21, row control triode.
Embodiment
Embodiment:
Consult Fig. 3,4,5 and 6, be an infrared touch panel 1 that constitutes by infrared, receiving circuit board unit, be provided with the touch-screen infrared array 2 that connects and composes by the infrared transmitter plate 5,6 after standard emission circuit board unit 4 and the cutting around it; And be provided with by the receiving circuit board unit 8,9 after the receiving circuit board unit 7 of standard and the cutting on emission array 2 opposites the receiving array 3 that constitutes is set;
Each radiating circuit plate unit 4,5,6 comprises the infrared emission tube 10 that array is provided with, and be provided with the power lead 18, ground wire 19, clock cable 16 and the infrared pulse signal wire 17 that connect whole radiating circuit plate unit, on an end of circuit board unit, be provided with line driver 12 and row driver 13, the two ends of circuit board unit are provided with the cable soldering opening 14 that connects power lead 18, ground wire 19, clock cable 16 and infrared pulse signal wire 17 respectively, and convenient and adjacent radiating circuit plate unit is connected.
Each receiving circuit board unit 7,8,9 comprises the infrared receiver tube 11 that array is provided with, and be provided with the power lead 18, ground wire 19, clock cable 16 and the infrared ray received signal line 15 that connect whole receiving circuit board unit, the two ends of circuit board unit are provided with the cable soldering opening 14 that connects power lead 18, ground wire 19, clock cable 16 and infrared ray received signal line 15 respectively, and convenient and adjacent radiating circuit plate unit is connected.
Consult Fig. 5, each infrared transmitter plate unit is provided with power lead 18, ground wire 19. clock cables 16 and the infrared pulse signal wire 17 of perforation; One end of each infrared transmitter plate unit is provided with line driver 12, row driver 13, and wherein the signal input port of line driver 12 links to each other with a clock cable 16, and signal output port connects the signal input port of row driver 13; The column drive wire of each infrared emission tube 10 in the array is connected with row driver 13 by row control triode 21 respectively, and row drive wire is connected with line driver 12 by row control triode 20 respectively; Wherein the emitter of row control triode 21 connects on the infrared pulse signal wire 17 or on the ground wire 19 in infrared transmitter plate unit;
Consult Fig. 6, each infrared radiation receiving circuit plate unit is provided with power lead 18, ground wire 19, clock cable 16 and the infrared ray received signal line 15 of perforation, one end of each infrared transmitter plate unit is provided with line driver 12, row driver 13, wherein the signal input port of line driver 12 links to each other with a clock cable 16, and signal output port connects the signal input port of row driver 13; The column drive wire of each infrared receiver tube 11 in the array is connected with row driver 13 by row control triode 21 respectively, and row drive wire is connected with line driver 12 by control triode 20 respectively; Wherein row control triode 21 emitters connect infrared ray received signal line 15 in infrared radiation receiving circuit plate unit.
Above-listed detailed description is at the specifying of possible embodiments of the present invention, and this embodiment is not in order to limiting claim of the present invention, and the equivalence that all the present invention of disengaging do is implemented or change, all should be contained in the claim of this case.
Claims (9)
1. infrared transmitter plate unit, comprise the infrared emission tube (10) that array is provided with, it is characterized in that: this circuit board unit is provided with power lead (18), ground wire (19) and the clock cable (16) that connects entire circuit plate unit, one end of circuit board unit is provided with line driver (12) and row driver (13), wherein the signal input port of line driver (12) connects clock cable (16), and the signal output port of line driver (12) connects the signal input port of row driver (13); The column drive wire of each infrared emission tube (10) in the array is connected with row driver (13) by row control triodes (21) respectively, and row drive wire is connected with the capable control line of line driver (12) respectively.
2. a kind of infrared transmitter plate according to claim 1 unit is characterized in that: the row drive wire of each infrared emission tube (10) in the array is connected with described line driver (12) by row control triode (20) respectively.
3. according to claim 1 or 2 described a kind of infrared transmitter plate unit, it is characterized in that: on infrared transmitter plate unit, be provided with respectively the cable soldering opening (14) that is connected respectively with described power lead (18), ground wire (19) and clock cable (16).
4. according to claim 1 or 2 described a kind of infrared transmitter plate unit, it is characterized in that: on this circuit board unit, be provided with perforation and infrared pulse signal wire (17) that be connected with described row control triodes (21).
5. according to claim 1 or 2 described a kind of infrared transmitter plate unit, it is characterized in that: described line driver (12) and row driver (13) are counter or shift register or programmable chip.
6. infrared radiation receiving circuit plate unit, comprise the infrared receiver tube (11) that array is provided with, it is characterized in that: this circuit board unit is provided with power lead (18), ground wire (19) and clock cable (16) and the infrared ray received signal line (15) that connects entire circuit plate unit, one end of circuit board unit is provided with line driver (12) and row driver (13), wherein the signal input port of line driver (12) connects clock cable (16), and the signal output port of line driver (12) connects the signal input port of row driver (13); The column drive wire of each infrared receiver tube (11) in the array is connected with row driver (13) by row control triodes (21) respectively, and row drive wire is connected with the capable control line of line driver (12) respectively.
7. according to the described a kind of infrared radiation receiving circuit plate of claim 6 unit, it is characterized in that: the row drive wire of each infrared receiver tube (11) in the array is connected with described line driver (12) by row control triode (20) respectively.
8. according to claim 6 or 7 described a kind of infrared radiation receiving circuit plate unit, it is characterized in that: on infrared radiation receiving circuit plate unit, be provided with respectively the cable soldering opening (14) that is connected respectively with described power lead (18), ground wire (19) and clock cable (16) and infrared ray received signal line (15).
9. according to claim 6 or 7 described a kind of infrared radiation receiving circuit plate unit, it is characterized in that: described line driver (12) and row driver (13) are counter or shift register or programmable chip.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100286795A CN101329612B (en) | 2007-06-19 | 2007-06-19 | Infrared ray transmitting and receiving circuit unit for infrared ray touch screen |
| PCT/CN2008/000259 WO2008095412A1 (en) | 2007-02-02 | 2008-02-01 | Infrared transmitting or receiving circuit board and infrared touch screen applying thereof |
| EP08706444A EP2116920A1 (en) | 2007-02-02 | 2008-02-01 | Infrared transmitting or receiving circuit board and infrared touch screen applying thereof |
| US12/525,488 US20100026666A1 (en) | 2007-02-02 | 2008-02-01 | Infrared transmitting or receiving circuit board unit and infrared touch screen using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100286795A CN101329612B (en) | 2007-06-19 | 2007-06-19 | Infrared ray transmitting and receiving circuit unit for infrared ray touch screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101329612A CN101329612A (en) | 2008-12-24 |
| CN101329612B true CN101329612B (en) | 2011-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100286795A Expired - Fee Related CN101329612B (en) | 2007-02-02 | 2007-06-19 | Infrared ray transmitting and receiving circuit unit for infrared ray touch screen |
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| Country | Link |
|---|---|
| CN (1) | CN101329612B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117806485A (en) * | 2018-10-30 | 2024-04-02 | 苏州泛普科技股份有限公司 | Control module of touch control film |
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2007
- 2007-06-19 CN CN2007100286795A patent/CN101329612B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101329612A (en) | 2008-12-24 |
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