CN106886342A - A kind of infrared touch panel and its localization method - Google Patents
A kind of infrared touch panel and its localization method Download PDFInfo
- Publication number
- CN106886342A CN106886342A CN201710264405.XA CN201710264405A CN106886342A CN 106886342 A CN106886342 A CN 106886342A CN 201710264405 A CN201710264405 A CN 201710264405A CN 106886342 A CN106886342 A CN 106886342A
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- China
- Prior art keywords
- infrared
- touch panel
- fluorescent tube
- light path
- touch
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
Abstract
The invention discloses a kind of infrared touch panel and its localization method, wherein, infrared touch panel includes：Touch panel, the circuit board being arranged on the downside of touch panel, some one-to-one corresponding and the infrared emission fluorescent tube and infrared receiver fluorescent tube that are electrically connected with circuit board；The corresponding both sides of touch panel surrounding are respectively arranged to receive the infrared light of infrared emission fluorescent tube transmitting and by the first light path reflection unit of the upside of infrared light reflection to touch panel and for receiving the infrared light reflexed on the upside of touch panel and the second light path reflection unit that will be received by infrared receiver fluorescent tube on the downside of infrared light reflection to touch panel.Infrared emission fluorescent tube and infrared receiver fluorescent tube are arranged on the present embodiment the downside of touch panel, promote original light path rarefaction or the downside of touch panel is largely or entirely gathered in without light path dead band, so that the outer width of frame of the whole machine of infrared touch panel or glass silk screen printing black surround are greatly reduced or disappeared, and the tangible region of infrared touch panel effectively increases.
Description
Technical field
The present invention relates to technical field of touch control, more particularly to a kind of infrared touch panel and its localization method.
Background technology
Touch-screen can be the electronic system for detecting and being touched in viewing area and existed with touch location.In current touch-control skill
In art, infrared touch panel is because its environmental suitability is strong, long lifespan and it is recognizable touch points it is many advantages of obtained extensively
Using.
Conventional infrared touch panel is rectangle infrared touch panel at present, and its basic structure is as shown in figure 1, including MCU
(Microprogrammed Control Unit, microprogram control unit) or CPU (Central Processing Unit, center
Processor), touch panel 3 and be arranged on the aluminium frame 4 of the surrounding of touch panel 3, the aluminium frame 4 is arranged on the touch surface
The upside of plate 3, wherein, the touch panel 3 is the transparent panels such as safety glass, and the upside of the touch panel 3 is
The tangibly side of infrared touch panel；Circuit board 5 is set on the inwall of aluminium frame 4, and circuit board 5 is electrically connected with MCU or CPU,
Wherein, the circuit board 5 includes pcb board (Printed Circuit Board, printed circuit board)；It is oppositely arranged under circuit board 5
Some infrared emission fluorescent tubes 1 and some infrared receiver fluorescent tubes 2, infrared emission fluorescent tube 1 and infrared receiver fluorescent tube 2 correspond and
Electrically connected with circuit board 5.In addition, the relative side of aluminium frame 4 sets light transmission strip 6, the infrared light that infrared emission fluorescent tube 1 sends
By being received by the infrared receiver fluorescent tube 2 positioned at opposite after light transmission strip 6.
Generally, in infrared touch panel, MCU or CPU is scanned using 1 pair of n (n >=1) mode, according to being blocked
Or there is the position of touch operation in the Calculation of Optical Path that light weakens.Wherein, in 1 pair of n scan mode, an infrared emission fluorescent tube
There are n bar light paths, every light path possesses different angles, and an angle is a scanning direction.Therefore, 1 pair of n scan mode has n
Individual scanning direction, each scanning direction is made up of one group of parallel light path with slope.Under a scanning direction, sent out when having to touch
When raw, each touch point can shelter from the corresponding parallel light path in continuous some scanning directions, what these were continuously blocked
Light path is the occlusion area under Current Scan direction.The occlusion area is the light that touch point is blocked on Current Scan direction and exists
Position in touch-screen, and then, the occlusion area of the light path formation blocked further according to touch point on other scanning directions is to touching
Point is positioned.
However, as shown in Fig. 2 under 1 pair of n scan mode, the overall of infrared touch panel touches frame to be divided into light path intensive
Area (A areas), light path rarefaction (B areas) and without light path dead band (C areas), due to light path rarefaction and the light path without light path dead band is sparse
Or cause touch precision low without light path, and in order to ensure the touch precision of infrared touch panel, in above-mentioned infrared touching screen structure, can only
Increase the outer width of frame of the whole machine of infrared touch panel or increase glass silk screen printing black surround to improve touch precision, i.e., by infrared touch panel
Whole machine housing or glass silk screen printing black surround covering light path rarefaction and without light path dead band so that light path rarefaction and without light path dead band
Cannot be touched, therefore cause the width of the outer width of frame of the whole machine of infrared touch panel or glass silk screen printing black surround larger (typically all big
In 20mm), the tangible region of practical operation is relatively small in infrared touch panel.
The content of the invention
To overcome problem present in correlation technique, the present invention to provide a kind of infrared touch panel and its localization method.
A kind of first aspect according to embodiments of the present invention, there is provided infrared touch panel, including：Touch panel, it is arranged on
Printed circuit board circuit board, some infrared emission fluorescent tubes and infrared receiver fluorescent tube on the downside of the touch panel, wherein,
The infrared emission fluorescent tube and infrared receiver fluorescent tube are corresponded and are electrically connected to the circuit board；
The corresponding both sides of the touch panel surrounding are respectively provided with the first light path reflection unit and the second light path reflection dress
Put, the first light path reflection unit is used to receiving the infrared light of the infrared emission fluorescent tube transmitting and infrared light is anti-
The upside of the touch panel is mapped to, the second light path reflection unit reflexes to red on the upside of the touch panel for reception
Outer light is simultaneously received the infrared light reflection to touch panel downside by the infrared receiver fluorescent tube.
With reference in a first aspect, in first aspect in the first possible implementation, the infrared emission fluorescent tube and relative
The infrared receiver fluorescent tube answered is opposite to setting.
With reference to the first possible implementation method of first aspect, in second possible implementation method of first aspect,
The opposite infrared emission fluorescent tube and infrared receiver fluorescent tube to setting is in same level.
With reference in a first aspect, in first aspect in the third possible implementation, the infrared emission fluorescent tube and relative
The infrared receiver fluorescent tube answered is oppositely arranged and not in same level.
With reference in a first aspect, in the 4th kind of possible implementation of first aspect, the first light path reflection unit and
Second light path reflection unit includes that two angles are 90 ° and respectively positioned at the infrared external reflection of the upper and lower both sides of the touch panel
Piece, the infrared external reflection piece is each attached on the inwall of red infrared touch panel outer frame structure, wherein,
The center of the infrared external reflection piece on the upside of the touch panel is in same level；
The center of the infrared external reflection piece being located in the first light path reflection unit on the downside of the touch panel is red with described
Emission fluorescent tube is in same level；
The center of the infrared external reflection piece being located in the second light path reflection unit on the downside of the touch panel is red with described
Outer reception fluorescent tube is in same level.
With reference to the 4th kind of possible implementation method of first aspect, in the 5th kind of possible implementation method of first aspect, position
Infrared external reflection piece on the upside of the touch panel is identical with the angle of the touch panel, be 40 °~50 °.
With reference to the 5th kind of possible implementation method of first aspect, in the 6th kind of possible implementation method of first aspect, position
Infrared external reflection piece on the upside of the touch panel is 45 ° with the angle of the touch panel.
With reference in a first aspect, in the 7th kind of possible implementation of first aspect, adjacent infrared emission fluorescent tube and phase
The spacing of adjacent infrared receiver fluorescent tube is all higher than or equal to 5mm and less than or equal to 22mm.
With reference to the 7th kind of possible implementation of first aspect, in the 8th kind of possible implementation of first aspect, phase
Adjacent infrared emission fluorescent tube and the spacing of adjacent infrared receiver fluorescent tube are all higher than or equal to 11mm and less than or equal to 22mm.
A kind of second aspect according to embodiments of the present invention, there is provided localization method of infrared touch panel, is applied to above-mentioned
One infrared touch panel, methods described includes：
Scanned according to default scanning direction, obtain the occlusion area under each scanning direction；
According to the occlusion area under each scanning direction, the virtual coordinates of touch point are calculated, wherein, the void of the touch point
Quasi-coordinate is coordinate of the touch point in infrared touch panel virtually integrally touches frame, and the infrared touch panel is virtually integrally touched
Frame is touched for infrared emission fluorescent tube, the picture point area defined of infrared receiver fluorescent tube；
According to the virtual coordinates of the touch point, the actual coordinate of the touch point is calculated, wherein, the reality of the touch point
Border coordinate is coordinate of the touch point in the whole machine touch area of infrared touch panel.
The technical scheme that the present invention is provided can include the following benefits：
Infrared touch panel provided in an embodiment of the present invention, touch surface is arranged on by infrared emission fluorescent tube and infrared receiver fluorescent tube
The downside of plate, receives the infrared light that infrared emission fluorescent tube is launched, and infrared emission fluorescent tube is sent out by the first light path reflection unit
The infrared light reflection penetrated is to the upside of touch panel；Touch panel upside first light is received by the second light path reflection unit
The infrared light of road reflection unit reflection, and give infrared receiver fluorescent tube by the infrared light reflection.Due to infrared emission fluorescent tube and red
Outer to receive the downside that fluorescent tube is arranged at touch panel, the infrared light launched by infrared emission fluorescent tube reflects through the first light path and fills
Put and reflex to touch panel upside, and along reflexing to touch through the second light path reflection unit after the horizontal infection of touch panel upper surface
Panel downside, the infrared light is received by infrared receiver fluorescent tube, due to after the infrared light propagated on the upside of the touch panel, touch surface
The downside of plate also propagates the infrared light in certain path near infrared emission fluorescent tube and infrared receiver fluorescent tube, promotes original light path dilute
Dredge area or the downside of touch panel, therefore the light path compact district on the upside of touch panel are largely or entirely gathered in without light path dead band
Domain increases so that for covering light path rarefaction and the outer width of frame of the whole machine of infrared touch panel without light path dead band or glass silk screen printing
Black surround is greatly reduced or disappeared, and the tangible region of infrared touch panel effectively increases, and is greatly promoted user and is clicked on touch-control, writes
And line Experience Degree.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not
Can the limitation present invention.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, letter will be made to the accompanying drawing to be used needed for embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to these accompanying drawings.
A kind of cross-sectional view of infrared touch panel that Fig. 1 is provided for prior art；
Fig. 2 integrally touches the structural representation of frame for a kind of infrared touch panel that prior art is provided；
Fig. 3 is a kind of cross-sectional view of infrared touch panel provided in an embodiment of the present invention；
Fig. 4 is the cross-sectional view of another infrared touch panel provided in an embodiment of the present invention；
Fig. 5 is a kind of localization method schematic flow sheet of infrared touch panel provided in an embodiment of the present invention；
Fig. 6 is the structural representation that a kind of infrared touch panel provided in an embodiment of the present invention virtually integrally touches frame；
Fig. 7 is a kind of structural representation of 1 pair of 2 scan mode provided in an embodiment of the present invention；
Fig. 8 is a kind of structural representation of occlusion area provided in an embodiment of the present invention.
Specific embodiment
The embodiment of the present invention provides a kind of infrared touch panel, as shown in figure 3, including touch panel 3 and being arranged on touch
Circuit board 5, some infrared emission fluorescent tubes 1 and infrared receiver fluorescent tube 2 on the downside of panel 3, wherein, the upside of touch panel 3 is red
The outer tangibly side of touch-screen, the downside of touch panel 3 is the side relative with the upside of touch panel 3.Wherein, the touch
Panel 3 can be safety glass, and certainly, in specific implementation process, it is any thoroughly that user chooses other also dependent on actual conditions
The panel that bright material is made is not specifically limited herein as touch panel.
In the specific embodiment of the invention, two long side edges downside of touch panel 3 respectively sets one group of infrared discharge lamps
Pipe 1 and one group of infrared receiver fluorescent tube 2；Two short side edges downside of touch panel 3 respectively sets one group of infrared emission fluorescent tube 1 and
Group infrared receiver fluorescent tube 2.Every group of all infrared emission fluorescent tubes or infrared receiver fluorescent tube form a line, the infrared hair of long side
Shot-light pipe 1 and infrared receiver fluorescent tube 2 are corresponded, the infrared emission fluorescent tube 1 and also one a pair of infrared receiver fluorescent tube 2 of short brink
Should.
In specific implementation process, infrared emission fluorescent tube 1 and corresponding infrared receiver fluorescent tube 2 may be provided at touch panel
3 downsides are caved at 3-5cm, i.e., to be arranged on 3 times lateral extents of touch panel with infrared receiver fluorescent tube 2 adjacent most for infrared emission fluorescent tube 1
Near side long or the spacing of short side edge is the position of 3-5cm.Certainly, 3-5cm is infrared emission fluorescent tube 1 or infrared receiver fluorescent tube
2 apart from the edge spacing of touch panel 3 optimal value, in specific implementation process, user can according to actual conditions set it is infrared
Transmitting fluorescent tube 1 or infrared receiver fluorescent tube 2 are any number apart from the edge spacing of touch panel 3, are not specifically limited herein.
During installation, in every group of infrared emission fluorescent tube 1 spacing of adjacent infrared emission fluorescent tube 1 be all higher than or equal to 5mm and
Less than or equal to 22mm；Corresponding, the spacing of adjacent infrared receiver fluorescent tube 2 and above-mentioned phase in every group of infrared receiver fluorescent tube 2
The spacing of adjacent infrared emission fluorescent tube 1 is identical, is also to be all higher than or equal to 5mm and less than or equal to 22mm.
In embodiments of the present invention, when the spacing of adjacent infrared emission fluorescent tube 1 is smaller, infrared emission fluorescent tube is more close
Collection, light path is more, and when touch point coordinates is calculated, amount of calculation is big, due to the center calculating process of tangible region
In also have substantial amounts of redundancy light path, therefore, while touch point coordinate precision is not reduced, can suitably increase adjacent red
The spacing of emission fluorescent tube 1 and adjacent infrared receiver fluorescent tube 2.Therefore, in embodiments of the present invention, adjacent infrared discharge lamps
The spacing of pipe 1 and adjacent infrared receiver fluorescent tube 2 can be all higher than or equal to 11mm and less than or equal to 22mm.Above-mentioned spacing
Design, on the premise of multiple spot discrimination and precision is ensured, and while ensureing that touch point coordinate precision will not be reduced, due to
Spacing increase between adjacent infrared emission fluorescent tube 1 and adjacent infrared receiver fluorescent tube 2, can set under same infrared touch panel
The infrared emission fluorescent tube and infrared receiver fluorescent tube quantity put largely are reduced, so as to substantially reduce the cost of infrared touch panel；And,
During due to infrared emission fluorescent tube and more intensive infrared receiver fluorescent tube, light path is more, calculates the amount of calculation for touching point coordinates
Greatly, and in the center calculating process of tangible region a substantial amounts of redundancy light path is also had, and under same infrared touch panel
After a large amount of reduction infrared emission fluorescent tubes and infrared receiver fluorescent tube quantity, can effectively simplify circuit board wiring design and production is complicated
Degree, and amount of calculation is reduced, touch screen speed is lifted, lift user experience.In specific implementation process, adjacent infrared discharge lamps
The spacing of pipe 1 and adjacent infrared receiver fluorescent tube 2 is preferably 15mm.
Certainly, in specific implementation process, above-mentioned spacing is adjacent infrared emission fluorescent tube 1 and adjacent infrared receiver lamp
The optimal spacing or optimal spacing range of pipe 2, user can set the spacing of adjacent infrared emission fluorescent tube 1 according to actual conditions
Spacing with adjacent infrared receiver fluorescent tube 2 is any spacing, is not specifically limited herein.
All infrared emission fluorescent tubes 1 and infrared receiver fluorescent tube 2 in the embodiment of the present invention are electrically connected with circuit board 5, electricity
Road plate 5 is electrically connected with MCU or CPU.MCU or CPU can control the sequential of infrared emission fluorescent tube by circuit board 5, while also can
The sequential of infrared receiver fluorescent tube is controlled, and the infrared light that all infrared receiver fluorescent tubes are received is sampled, is focused on, calculated
The coordinate for going out touch point is sent to computer.In specific implementation process, the circuit board 5 includes pcb board.
Infrared touch panel provided in an embodiment of the present invention, the outside on the side long of infrared touch panel two respectively sets first light path
Reflection unit 7 and a second light path reflection unit 8, the outside of two short sides also respectively set a He of the first light path reflection unit 7
One the second light path reflection unit 8.Wherein, the first light path reflection unit 7 is positioned close to the one of the transmitting terminal of infrared emission fluorescent tube 1
Side, the second light path reflection unit 8 is positioned close to the side of the receiving terminal of infrared receiver fluorescent tube 2.First light path reflection unit 7 can be with
Receive the infrared light of the infrared emission fluorescent tube 1 transmitting, and the infrared light reflection that will be received is to the upside of touch panel 3；Second
Light path reflection unit 8 can receive the infrared light that the first light path reflection unit 8 reflexes to the upside of touch panel 3, and will receive
Infrared light reflection is to the downside of touch panel 3, so as to be received by infrared receiver fluorescent tube 2.
By setting the first light path reflection unit and the second light path reflection unit, the infrared light that infrared emission fluorescent tube is launched
Propagated through the upside of touch panel and received by the infrared receiver fluorescent tube on the downside of touch panel, when touch panel upside has
During touch operation, the infrared luminous intensity that the infrared receiver fluorescent tube on the downside of touch panel is received will change, so as to perceive
The generation of touch operation.
In a kind of possible embodiment, the first light path reflection unit 7 and the second light path reflection unit 8 include two folders
Angle be 90 ° and respectively positioned at touch panel both sides about 3 infrared external reflection piece, i.e., in the embodiment of the present invention it is infrared touch
Touch screen includes 8 infrared external reflection pieces altogether, and this 8 infrared external reflection pieces can be fixed on the inwall of red infrared touch panel outer frame structure 9.
In specific implementation process, this 8 infrared external reflection pieces can be directly anchored to the inwall of red infrared touch panel outer frame structure 9
On；Two infrared external reflection pieces can also be fixedly connected by one first attachment means, the first attachment means are fixedly attached to again
On the inwall of red infrared touch panel outer frame structure 9；Or, all infrared external reflection pieces are fixedly connected by one second attachment means,
Second attachment means are fixedly attached on the inwall of red infrared touch panel outer frame structure 9 again.In specific implementation process, user Ke Gen
According to actual conditions setting infrared external reflection piece and the connected mode of red infrared touch panel outer frame structure, it is not specifically limited herein.
With reference to Fig. 3, infrared emission fluorescent tube 1 launches the infrared light parallel to touch panel 3, is irradiated to the reflection of the first light path
It is located on the infrared external reflection piece of the downside of touch panel 3 in device 7, the infrared external reflection piece receives the red of the transmitting of infrared emission fluorescent tube 1
Outer light simultaneously reflexes to the infrared external reflection piece that the upside of touch panel 3 is located in the first light path reflection unit 7, and the infrared external reflection piece will be red
Outer light is reflexed on the second light path reflection unit 8 in the upside of touch panel 3；In second light path reflection unit 8 positioned at touch
The infrared external reflection piece of the upside of panel 3 receives the infrared light that the first light path reflection unit 7 reflexes to the upside of touch panel 3, and should
In infrared light reflection to the second light path reflection unit 8 on the infrared external reflection piece of the downside of touch panel 3, the infrared external reflection piece
By the infrared light reflection to infrared receiver fluorescent tube 2.
In embodiments of the present invention, the infrared external reflection piece of the downside of the touch panel 3 is located in the first light path reflection unit 7
Center and infrared emission fluorescent tube 1 can be arranged in same level；4 positioned at the upside of the touch panel 3 are infrared anti-
The center for penetrating piece can be arranged in same level；The red of the downside of the touch panel 3 is located in second light path reflection unit 8
The center of external reflectance piece is with the infrared receiver fluorescent tube 2 in same level.Infrared emission fluorescent tube 1 is launched parallel to touch
The infrared light of panel 3, through two infrared external reflection pieces in the first light path reflection unit 7, obtains parallel in the upside of touch panel 3
In the infrared light in the direction of touch panel 3, and the second light path reflection unit 8 is reflected to, is reflexed to through the second light path reflection unit 8 tactile
The downside of panel 3 is touched, and infrared receiver fluorescent tube 2 is reflected to along the direction parallel to touch panel 3.
In order to reduce red infrared touch panel outer frame structure length and width in the horizontal direction, positioned at the upside of touch panel 3
Infrared external reflection piece is identical with the angle of touch panel 3, be 40 °~and 50 °.When the infrared external reflection piece positioned at the upside of touch panel 3
When being 45 ° with the angle of touch panel 3, the infrared external reflection piece positioned at the downside of touch panel 3 is also equal with the angle of touch panel 3
It it is 45 °, now, the length and width in the horizontal direction of red infrared touch panel outer frame structure 9 can reach minimum.Certainly, 45 ° is position
In the optimized angle of the angle of the infrared external reflection piece and touch panel 3 of the upside of touch panel 3,40 °~50 ° is positioned at touch panel
The infrared external reflection piece of 3 upsides and the preferred range of angles of the angle of touch panel 3, in specific implementation process, user can be with root
The infrared external reflection piece and the angle of touch panel 3 set positioned at the upside of touch panel 3 according to actual conditions are the random angle less than 90 °
Degree, is not specifically limited herein.
In specific implementation process, in order to ensure the infrared light of the reflection of the first light path reflection unit 7 along the upside of touch panel 3
Propagate, meanwhile, the second light path reflection unit 8 smoothly receives the infrared light of the upside of touch panel 3, can reflect the first light path and fill
Put 7 and second light path reflection unit 8 be separately positioned on the edge spacing of touch panel 3 for 10mm position, touch panel 3
The center of the infrared external reflection piece of upside can be arranged on the position for 2mm with the upper table interplanar distance of touch panel 3.Certainly, specific
In implementation process, user can set the first light path reflection unit 7 and the second light path reflection unit 8 and touch surface according to actual conditions
The spacing at the edge of plate 3 is any number, it is also possible to set on the infrared external reflection piece and touch panel 3 of the upside of touch panel 3
The spacing on surface is any number, is not specifically limited herein.
In specific implementation process, infrared external reflection piece includes plane mirror, and the main material of plane mirror is glass,
Glass is relatively low to the absorptivity of infrared light, and reflectivity is higher, therefore, it can plane mirror as infrared external reflection piece.
In a kind of possible embodiment of the invention, as shown in figure 3, infrared emission fluorescent tube 1 and corresponding infrared receiver
Fluorescent tube 2 can be opposite to each other to setting.As shown in figure 3, the first light path reflection unit 7 is positioned close to the side of infrared emission fluorescent tube 1,
Second light path reflection unit 8 is positioned close to the side of infrared receiver fluorescent tube 2, the transmitting terminal direction first of infrared emission fluorescent tube 1
Light path reflection unit 7, the receiving terminal second light path reflection unit 8 of direction of infrared receiver fluorescent tube 2.In specific implementation process, phase
The infrared emission fluorescent tube 1 and infrared receiver fluorescent tube 2 for dorsad setting can be arranged in same level.Under this structure, first
Two infrared external reflection pieces in two spacing of infrared external reflection piece in light path reflection unit 7 and the second light path reflection unit 8
Spacing can be with identical.
As shown in figure 3, infrared emission fluorescent tube 1 and infrared receiver fluorescent tube 2 are arranged at the upside of circuit board 5, wherein, it is described
The upside of circuit board 5 be circuit board 5 near touch panel 3 side, by infrared emission fluorescent tube 1 and infrared receiver fluorescent tube 2 with
The inconsistent setting of touch panel 3, is set according to said structure, can greatly reduce the thickness of infrared touch panel.Or, infrared hair
Shot-light pipe 1 and infrared receiver fluorescent tube 2 can also be arranged at the downside of circuit board 5, and the downside of the circuit board 5 is circuit board 5
Away from the side of touch panel 3, i.e., side relative with the upside, it is also possible to by circuit board 5 and the phase of touch panel 3
Contradict and set, it is also possible to greatly reduce the thickness of infrared touch panel.
Certainly, in specific implementation process, opposite to each other can also to the infrared emission fluorescent tube 1 and infrared receiver fluorescent tube 2 that set
It is not arranged in same level, but, in embodiments of the present invention, when infrared emission fluorescent tube 1 and infrared receiver fluorescent tube 2 are set
When in same level, spacing is zero on vertical direction between the two, relative to being not arranged in same level, Neng Gou great
The big thickness for reducing infrared touch panel.Certainly, user can set infrared emission fluorescent tube 1, infrared receiver fluorescent tube 2 according to actual conditions
And the relative position between circuit board 5, it is not specifically limited herein.
In alternatively possible embodiment of the invention, infrared emission fluorescent tube 1 and corresponding infrared receiver fluorescent tube 2 are opposite
Set, in order to prevent infrared emission fluorescent tube 1 from sending infrared light without the upside of touch panel 3 directly by infrared receiver fluorescent tube 2
Receive, infrared emission fluorescent tube 1 and corresponding infrared receiver fluorescent tube 2 are not arranged in same level.As shown in figure 4, the
One light path reflection unit 7 is positioned close to the side of infrared receiver fluorescent tube 2, and the second light path reflection unit 8 is positioned close to infrared
Launch the side of fluorescent tube 1, the direction of the transmitting terminal first light path reflection unit 7 of direction of infrared emission fluorescent tube 1, infrared receiver fluorescent tube
The direction of 2 receiving terminal the second light path reflection unit 8 of direction.In specific implementation process, when infrared emission fluorescent tube 1 and infrared connect
Receive fluorescent tube 2 not block mutually and when the spacing of vertical direction is minimum, the thickness of infrared touch panel is minimum.When infrared emission fluorescent tube 1
Centre distance infrared receiver fluorescent tube 2 center spacing be h when, infrared emission fluorescent tube 1 and infrared receiver fluorescent tube 2 are not blocked mutually
And spacing is minimum, wherein, h is the half contour half lamp sum high with infrared receiver fluorescent tube 2 of infrared emission fluorescent tube 1, in general feelings
Under condition, because infrared emission fluorescent tube 1 is highly identical with infrared receiver fluorescent tube 2, therefore, h is generally the height of infrared emission fluorescent tube 1
Degree.
Under this configuration, two spacing of infrared external reflection piece in the first light path reflection unit 7 reflect with the second light path
The spacing of two infrared external reflection pieces in device 8 is differed, when the distance of infrared emission fluorescent tube 1 and touch panel 3 is less than infrared
Receive fluorescent tube 2 and touch panel 3 apart from when, in specific implementation process, can be located in the second light path reflection unit 8 and touched
The infrared external reflection piece of the downside of panel 3 is touched along the direction movement away from touch panel 3, by the center of the infrared external reflection piece be moved to
In same level, now, two spacing of reflector plate of the second light path reflection unit 8 are more than first to infrared receiver fluorescent tube 2
Two spacing of infrared external reflection piece in light path reflection unit 7.When the distance of infrared emission fluorescent tube 1 and touch panel 3 is more than red
It is outer receive fluorescent tube 2 and touch panel 3 apart from when, in specific implementation process, will can be located in the first light path reflection unit 7
Be moved at the center of the infrared external reflection piece along the direction movement away from touch panel 3 by the infrared external reflection piece of the downside of touch panel 3
With infrared emission fluorescent tube 1 in same level, now, two reflector plates of the second light path reflection unit 8 are smaller than
Two spacing of infrared external reflection piece in one light path reflection unit 7.
Infrared touch panel provided in an embodiment of the present invention, including touch panel, be arranged on the downside of touch panel circuit board,
Some infrared emission fluorescent tubes and infrared receiver fluorescent tube, wherein, infrared emission fluorescent tube and infrared receiver fluorescent tube are corresponded and electric
It is connected to circuit board；The corresponding both sides of touch panel surrounding are respectively provided with the first light path reflection unit and the second light path reflection dress
Put, the first light path reflection unit is used to receive the infrared light of infrared emission fluorescent tube transmitting and by infrared light reflection to the touch
The upside of panel, the second light path reflection unit is used to receive and reflexes to infrared light on the upside of touch panel and by infrared light reflection
Received by infrared receiver fluorescent tube to touch panel downside.Infrared touch panel provided in an embodiment of the present invention, by infrared emission
Fluorescent tube and infrared receiver fluorescent tube are arranged on the downside of touch panel, and receiving infrared emission fluorescent tube by the first light path reflection unit sends out
The infrared light penetrated, and the infrared light reflection that infrared emission fluorescent tube is launched is to the upside of touch panel；Reflected by the second light path
Device receives the infrared light of touch panel upside the first light path reflection unit reflection, and by the infrared light reflection to infrared
Receive fluorescent tube.The downside of touch panel is arranged at due to infrared emission fluorescent tube and infrared receiver fluorescent tube, by infrared emission fluorescent tube
The infrared light of transmitting, touch panel upside is reflexed to through the first light path reflection unit, and along touch panel upper surface horizontal infection
Touch panel downside is reflexed to by the second light path reflection unit, the infrared light is received by infrared receiver fluorescent tube, due to touching
After the infrared light that panel upside is propagated, the downside of touch panel also propagates one near infrared emission fluorescent tube and infrared receiver fluorescent tube
Determine the infrared light in path, promote original light path rarefaction or be largely or entirely gathered under touch panel without light path dead band
Light path close quarters increase on the upside of side, therefore touch panel so that for covering light path rarefaction and without the red of light path dead band
The outer width of frame of the outer whole machine of touch-screen or glass silk screen printing black surround are greatly reduced or disappeared, and in specific implementation process, can be reduced
, within 10mm, the tangible region of infrared touch panel effectively increases for the outer width of frame of the whole machine of infrared touch panel or glass silk screen printing black surround
Greatly, lifting user clicks on touch-control, writes and Experience Degree of ruling.
Further, since the height that touches of infrared touch panel is the infrared light and the distance of touch panel on the upside of touch panel,
The infrared emission fluorescent tube of infrared touch panel of the prior art is arranged on the upside of touch panel, and it is infrared emission that it touches height
The vertical range of fluorescent tube and touch panel, is arranged on the inside of aluminium frame 4 due to infrared emission fluorescent tube, infrared emission fluorescent tube with touch
The vertical range of panel is touched for half lamp of infrared emission fluorescent tube is high, infrared emission fluorescent tube and aluminium frame 4 are near the side of touch panel 3
Gap and aluminium frame 4 near touch panel side thickness sum, in specific implementation process, infrared emission fluorescent tube with touch
The vertical range for touching panel is not less than 4.5mm, cause infrared touch panel of the prior art touch height it is higher, user's makes
During, finger acted near 4.5mm and no touch operate when, be easily caused infrared touch panel misoperation.And it is of the invention
The infrared touch panel that embodiment is provided, the infrared light of the upside of touch panel 3 is got on through the reflection of the first light path reflection unit 7,
In specific implementation process, the position of the first light path reflection unit is adjusted, the infrared light of the upside of touch panel 3 can be reduced and touched
The distance of panel 3 is touched, height reduction to minimum 2mm can will be touched, while reducing the misoperation of infrared touch panel, effectively
Lift the writing experience of user.
Based on identical technical scheme, the embodiment of the present invention additionally provides the localization method of infrared touch panel, is applied to
State infrared touch panel.It is the localization method of infrared touch panel provided in an embodiment of the present invention referring to Fig. 5, the method includes as follows
Step：
Step S100：Scanned according to default scanning direction, obtain the occlusion area under each scanning direction.
The downside of touch panel is respectively positioned on due to infrared emission fluorescent tube and infrared receiver fluorescent tube, and touch action occurs touching
Touch the upside of panel, the light path of infrared touch panel some in the downside of touch panel, accordingly, it would be desirable to find infrared hair in advance
The picture point of shot-light pipe and infrared receiver fluorescent tube.As shown in fig. 6, the picture point of the infrared emission fluorescent tube is to reflect to fill in the first light path
The transmitting terminal 11 of middle infrared emission fluorescent tube imaging is put, the picture point of the infrared receiver fluorescent tube is red in the second light path reflection unit
The rectangular area that the picture point of the outer receiving terminal 21 for receiving fluorescent tube imaging, all infrared emission fluorescent tubes and infrared receiver fluorescent tube is surrounded
It is defined as the infrared touch panel and virtually integrally touches frame.Infrared touch panel virtually integrally touches the area of frame 001 more than infrared
The area of touch-screen tangible region 002, wherein, the tangible region 002 is the whole machine viewing area of infrared touch panel, is led to
In the case of often, the whole machine viewing area of rectangle infrared touch panel is also rectangle.
A summit of frame 001 is virtually integrally touched with infrared touch panel as origin, is virtually integrally touched with infrared touch panel
The long side direction of frame 001 is touched for X-direction, short side direction sets up coordinate system for Y direction, and this coordinate system is referred to as virtual coordinates
System.The summit nearest apart from virtual coordinate system origin be as origin with all summits of tangible region 002, with tangible region
002 long side direction is X ' direction of principal axis, and short side direction sets up coordinate system for Y ' direction of principal axis, and this coordinate system is referred to as the reality of infrared touch panel
Border coordinate system, d1 is the spacing of two coordinate system X-axis and X ' axles, and d2 is the spacing of two coordinate system Y-axis and Y ' axles.Wherein, d1
It is the light conducted in the receiving terminal of infrared receiver fluorescent tube 2 and spacing, the second light path reflection unit 8 of the second light path reflection unit 8
The spacing sum of the distance on road and the second light path reflection unit 8 and tangible region.In specific implementation process, the second light path
When reflection unit 8 is two infrared external reflection pieces, d1 is the receiving terminal and the middle position of the second light path reflection unit 8 of infrared receiver fluorescent tube 2
Two spacing of infrared external reflection piece in spacing, the second light path reflection unit 8 at the infrared external reflection piece center of the downside of touch panel 3
And infrared external reflection piece and the spacing sum of tangible region positioned at the upside of touch panel 3.D2 is the hair of infrared emission fluorescent tube 1
Penetrate the distance and the first light path at end and the light path of conduction in spacing, the first light path reflection unit 7 of the first light path reflection unit 7
The spacing sum of reflection unit 7 and tangible region.In specific implementation process, the first light path reflection unit 7 is two infrared
During reflector plate, d2 is red on the downside of touch panel 3 with the first light path reflection unit 7 for the transmitting terminal of infrared emission fluorescent tube 1
The spacing of two infrared external reflection pieces and on touch panel 3 in the spacing at external reflectance piece center, the first light path reflection unit 7
The infrared external reflection piece of side and the spacing sum of tangible region.
Default scanning direction number n (n >=1) and each angle of infrared emission fluorescent tube under each scanning direction, at one
Under scan period, n scanning direction scanning is performed, count the occlusion area under each scanning direction.As shown in fig. 7, being rectangle
1 pair, side a kind of long, 2 scan modes of infrared touch panel, when there is touch operation, under a scanning direction, there is continuous a plurality of
Parallel light path is blocked.As shown in figure 8, being the schematic diagram of occlusion area (shadow region) under a scanning direction, first quilt
The light path blocked is the beginning boundary of this occlusion area, and the light path that last is blocked is termination border (beginning boundary and end
Only the order on border can be with self-defined replacing).
Step S200：According to the occlusion area under each scanning direction, the virtual coordinates of touch point are calculated.
Wherein, the virtual coordinates of the touch point are seat of the touch point in infrared touch panel virtually integrally touches frame
Mark, it is infrared emission fluorescent tube, the picture point area defined of infrared receiver fluorescent tube that the infrared touch panel virtually integrally touches frame.
In one scan period, the polygon addition method is carried out to all occlusion areas under n scanning direction of acquisition, this
A little occlusion areas virtually integrally touched with infrared touch panel frame edge constitute convex quadrangle (be under normal circumstances parallelogram,
Occlusion area in Fig. 8 is rectangle), polygon two-by-two is carried out to the occlusion area of each scanning direction and is intersected, after being finally superimposed
Polygon, if its all direction have parallelogram participate in superposition, be touch point, after superposition obtain coordinate be it is tactile
Touch virtual coordinates a little.
Step S300：According to the virtual coordinates of the touch point, the actual coordinate of the touch point is calculated.
Wherein, the actual coordinate of the touch point is seat of the touch point in the whole machine touch area of infrared touch panel
Mark.
In specific implementation process, the coordinate of the touch point that step S200 is obtained is seat of the touch point in virtual coordinate system
Mark, d2 is subtracted by the transverse axis coordinate value of the virtual coordinates, and ordinate of orthogonal axes value subtracts d1, and the coordinate of acquisition is the touch point and exists
Coordinate in actual coordinates.
During touch operation, according to step S100- step S300, multiple touch points that same period scanning is obtained can
Can there is terrible point, the incidence relation of the occlusion area obtained with step S100 according to all touch points judges that the touch point is true
Point or terrible point, if the touch point is terrible point, directly remove.Because a touch operation may include many frame scans, to current
The true point set that true point and the previous frame of frame are obtained is matched (i.e. previous frame point and present frame by most short Euclidean distance
Less than the distance of other unmatched points pair, then this two Point matching is successful for the distance of certain point), this is track following；Then to upper one
Frame and the present frame point that the match is successful to coordinate carry out arithmetic average, this be smooth, and the point coordinates of acquisition is used as ought after smoothing
Previous frame point position is exported.
What is provided in above-described embodiment is related to going terrible point, touch track tracking and smooth etc. for present frame touch point position
The correlation technique that coordinate is calculated is put, due to having related mature technology in the prior art, Patents etc. is can refer to,
This is not elaborated.
Those skilled in the art considering specification and practice here after disclosure of the invention, will readily occur to it is of the invention its
Its embodiment.The application is intended to any modification of the invention, purposes or adaptations, these modifications, purposes or
Person's adaptations follow general principle of the invention and including undocumented common knowledge in the art of the invention
Or conventional techniques.Description and embodiments are considered only as exemplary, and true scope and spirit of the invention are by following
Claim is pointed out.
Invention described above implementation method is not intended to limit the scope of the present invention..
Claims (10)
1. a kind of infrared touch panel, it is characterised in that including：Touch panel, the circuit board being arranged on the downside of the touch panel,
Some infrared emission fluorescent tubes and infrared receiver fluorescent tube, wherein,
The infrared emission fluorescent tube and infrared receiver fluorescent tube are corresponded and are electrically connected to the circuit board；
The corresponding both sides of the touch panel surrounding are respectively provided with the first light path reflection unit and the second light path reflection unit, institute
The first light path reflection unit is stated for receiving the infrared light of infrared emission fluorescent tube transmitting and by the infrared light reflection to institute
State the upside of touch panel, the second light path reflection unit be used to receiving reflex to infrared light on the upside of the touch panel,
And the infrared light reflection to touch panel downside is received by the infrared receiver fluorescent tube.
2. infrared touch panel as claimed in claim 1, it is characterised in that the infrared emission fluorescent tube and corresponding infrared connect
Receive fluorescent tube opposite to setting.
3. infrared touch panel as claimed in claim 2, it is characterised in that opposite to the infrared emission fluorescent tube for setting and red
Outer reception fluorescent tube is in same level.
4. infrared touch panel as claimed in claim 1, it is characterised in that the infrared emission fluorescent tube and corresponding infrared connect
Fluorescent tube is received to be oppositely arranged and not in same level.
5. infrared touch panel as claimed in claim 1, it is characterised in that the first light path reflection unit and the second light path are anti-
Injection device includes that two angles are 90 ° and respectively positioned at the infrared external reflection piece of the upper and lower both sides of the touch panel, described infrared
Reflector plate is each attached on the inwall of red infrared touch panel outer frame structure, wherein,
The center of the infrared external reflection piece on the upside of the touch panel is in same level；
The center of the infrared external reflection piece being located in the first light path reflection unit on the downside of the touch panel and the infrared hair
Shot-light pipe is in same level；
The center of the infrared external reflection piece being located in the second light path reflection unit on the downside of the touch panel infrared connects with described
Receipts fluorescent tube is in same level.
6. infrared touch panel as claimed in claim 5, it is characterised in that the infrared external reflection piece on the upside of the touch panel
It is identical with the angle of the touch panel, be 40 °~50 °.
7. infrared touch panel as claimed in claim 6, it is characterised in that the infrared external reflection piece on the upside of the touch panel
45 ° are with the angle of the touch panel.
8. infrared touch panel as claimed in claim 1, it is characterised in that adjacent infrared emission fluorescent tube and adjacent infrared connect
The spacing for receiving fluorescent tube is all higher than or equal to 5mm and less than or equal to 22mm.
9. infrared touch panel as claimed in claim 8, it is characterised in that adjacent infrared emission fluorescent tube and adjacent infrared connect
The spacing for receiving fluorescent tube is all higher than or equal to 11mm and less than or equal to 22mm.
10. a kind of localization method of infrared touch panel, is applied to any described infrared touch panels of claim 1-9, its feature
It is that methods described includes：
Scanned according to default scanning direction, obtain the occlusion area under each scanning direction；
According to the occlusion area under each scanning direction, the virtual coordinates of touch point are calculated, wherein, the virtual seat of the touch point
Coordinate of the touch point in infrared touch panel virtually integrally touches frame is designated as, the infrared touch panel virtually integrally touches frame
It is infrared emission fluorescent tube, the picture point area defined of infrared receiver fluorescent tube；
According to the virtual coordinates of the touch point, the actual coordinate of the touch point is calculated, wherein, the actual seat of the touch point
It is designated as coordinate of the touch point in the whole machine touch area of infrared touch panel.
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| CN108509087A (en) * | 2018-02-26 | 2018-09-07 | 广州华欣电子科技有限公司 | Measure method, apparatus, robot and storage medium that touching box touches height |
| CN109375835A (en) * | 2018-12-03 | 2019-02-22 | 青岛海信电器股份有限公司 | Touch control display apparatus |
| CN112068739A (en) * | 2020-09-23 | 2020-12-11 | 广州华欣电子科技有限公司 | Infrared touch response method, device and storage medium |
| CN112667113A (en) * | 2021-02-23 | 2021-04-16 | 中航华东光电有限公司 | High-precision infrared touch screen |
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| CN108509087A (en) * | 2018-02-26 | 2018-09-07 | 广州华欣电子科技有限公司 | Measure method, apparatus, robot and storage medium that touching box touches height |
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