CN104571722B - Contact panel - Google Patents
Contact panel Download PDFInfo
- Publication number
- CN104571722B CN104571722B CN201310481227.8A CN201310481227A CN104571722B CN 104571722 B CN104571722 B CN 104571722B CN 201310481227 A CN201310481227 A CN 201310481227A CN 104571722 B CN104571722 B CN 104571722B
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- China
- Prior art keywords
- light
- switched optical
- contact panel
- optical mirror
- transmitter
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Classifications
-
- 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
- G06F3/0428—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Nonlinear Science (AREA)
- Human Computer Interaction (AREA)
- Optics & Photonics (AREA)
- Position Input By Displaying (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
The present invention relates to technical field of touch control, there is provided a kind of contact panel, include a sensing region, the transmitter positioned at the corner of sensing region one, a detector positioned at another corner of sensing region, and a plurality of sides for being arranged in sensing region switched optical mirror.Transmitter is to produce a light, and detector is to receive the light.The light that transmitter is sent changes direct of travel through the reflection of at least two switched optical mirrors relatively, to be transferred to detector.The present invention only needs a transmitter and a detector accurately to judge touch point, cost-saved and reduction power consumption.
Description
Technical field
Present invention is directed to touch technology, especially a kind of optical touch control panel with switched optical mirror.
Background technology
In the market of various consumption electronic products now, personal digital assistant (PDA), mobile phone (mobile
Phone), the portable electronic product such as notebook computer (notebook) and tablet PC (tablet PC) is all extensive
The interface tool of its data communication is used as using contact panel (touch panel).According to the difference of sensing principle, contact panel
The types such as electricity formula, optical profile type and acoustics formula can be divided into.
Existing optical touch control panel is to set multiple transmitters and detector, and transmitter in the surrounding of contact panel
Constitute and launch and detecting array according to one-to-one relation with detector, by judging between transmitter and detector just
No be blocked and judge whether occur touch event.Above-mentioned optical touch control panel need substantial amounts of transmitter and detector with
Touch point is accurately judged that, but consequently, it is possible to the problems such as optical touch control panel cost is high, power consumption is big will be caused.
The content of the invention
To solve the above problems, the present invention, which provides a kind of contact panel, includes a sensing region, positioned at sensing region one
One transmitter in corner, the detector positioned at another corner of sensing region, and a plurality of switched optical mirrors are arranged in sense
Survey the side in region.Transmitter is to produce a light, and detector is to receive light.The light that transmitter is sent is through at least two
With respect to the reflection of switched optical mirror change direct of travel, to be transferred to detector.
Further, wherein those switched optical mirrors for changing light going direction are located at the two-phase of sensing region respectively
Opposite side, the light system that transmitter is sent transmits along one of dual side-edge, and through changing those switches of light going direction
One of formula optical frames reflects and to march to dual side-edge along a first path wherein another, then through changing light going direction
Those switched optical mirrors wherein it is another reflection and be transferred to detector along another side.
Further, wherein those switched optical mirror systems for changing light going direction are another positioned at sensing region respectively
Two relative sides, the light system that transmitter is sent is through changing one of those switched optical mirrors reflection of light going direction
And marching to another side along one second path, the second path and first path are in being not parallel relation in sensing region.
Further, wherein respectively the switched optical mirror has an opening and a closed mode, in opening
When can be totally reflected light, when closed mode light can be made to penetrate entirely.
Further, wherein further including a plurality of switches, it is electrically connected with each switched optical mirror.
Further, wherein each switched optical mirror includes to column liquid crystal layer, it is located between two panels transparent material.
Further, wherein each switched optical mirror includes a ferroelectric liquid crystal layer and a spectroscope.
Further, wherein each switched optical mirror has spinfunction, and each switched optical mirror is by a plurality of
Micro- level crossing is constituted.
Further, wherein further including an at least cylindrical lens, it is arranged in sensing region, and positioned at the transmission road of light
Footpath, each switched optical mirror of each cylindrical lens correspondence is set.
Further, it is arranged at wherein further including a bandpass filter in front of detector.
Further, the wherein modulation frequency of transmitter is between 10MHz~1GHz.
Further, the wherein switching frequency of switched optical mirror is between 1KHz~1MHz.
Further, wherein further including a substrate in the sensing region.
Further, wherein transmitter is a generating laser, and light is laser, and switched optical mirror is flat for switching regulator
Face mirror.
Further, wherein sensing region has a first side, a second side, one the 3rd side and one the 4th side
Side, first side is corresponding with second side, and the 3rd side is corresponding with four side, the two ends of first side and the 3rd side
And four side connects, the two ends of second side connect with the 3rd side and four side, and transmitter is located at the first side
The corner that side connects with the 3rd side, detector is located at the corner that second side connects with four side.
Further, wherein further including an at least level crossing, first side connects with four side in touch area
Corner and the corner that connects with the 3rd side of second side, and change those switched optical mirrors point of light going direction
Not Wei Yu the 3rd side and four side, the light that transmitter is sent sequentially transmits along first side, through positioned at first side with
The level crossing in the corner that four side connects reflects and transmitted along four side, and through the switched optical mirror positioned at four side
Reflect and march to the 3rd side along the second path, then through the switched optical mirror reflection positioned at the 3rd side along the 3rd side
Transmission, is transferred to detecting through being located at the level crossing reflection in the corner that second side connects with the 3rd side along second side again
Device.
Further, wherein those switched optical mirrors for changing light going direction are located at the 3rd side, the 4th respectively
The corner that the corner and second side that side, first side connect with four side connect with the 3rd side, transmitter is sent
Light sequentially transmitted along first side, the reflection of the switched optical mirror in the corner through connecting positioned at first side with four side
And transmitted along four side, and march to the 3rd side along the second path through the switched optical mirror reflection positioned at four side
Side, then transmitted through the switched optical mirror reflection positioned at the 3rd side along the 3rd side, again through being located at second side and the 3rd
The switched optical mirror in the corner that side connects reflects and is transferred to detector along second side.
Contact panel provided by the present invention, is provided with a plurality of switched optical mirrors, and be provided only with a transmitter with
And a detector.The light sent by transmitter, changes direct of travel, finally quilt by the reflection of each switched optical mirror
Detector is received.Therefore multigroup transmitter and detector need not be set, reach and save cost and effect of reduction power consumption.
Brief description of the drawings
Fig. 1 illustrates the touch panel structure provided schematic diagram of the first preferred embodiment of the present invention.
Signal when the one first direction touch points of contact panel progress that Fig. 2 illustrates the first preferred embodiment of the invention judge
Figure.
Signal when the one first direction touch points of contact panel progress that Fig. 3 illustrates the first preferred embodiment of the invention judge
Figure.
Signal when the one second direction touch points of contact panel progress that Fig. 4 illustrates the first preferred embodiment of the invention judge
Figure.
Fig. 5 A illustrate the closed mode structure of the first implementation aspect of the switched optical mirror of contact panel of the present invention.
Fig. 5 B illustrate the opening structure of the first implementation aspect of the switched optical mirror of contact panel of the present invention.
Fig. 6 A illustrate the closed mode structure of second of implementation aspect of switched optical mirror of contact panel of the present invention.
Fig. 6 B illustrate the opening structure of second of implementation aspect of switched optical mirror of contact panel of the present invention.
Fig. 7 A illustrate the closed mode structure of the third implementation aspect of the switched optical mirror of contact panel of the present invention.
Fig. 7 B illustrate the opening structure of the third implementation aspect of the switched optical mirror of contact panel of the present invention.
Fig. 8 illustrates the touch panel structure provided schematic diagram of the second preferred embodiment of the present invention.
Embodiment
To enable the general those skilled in the art for being familiar with the technical field of the invention to be further understood that the present invention, hereafter spy enumerates
The preferred embodiments of the invention, and coordinate institute's accompanying drawings, describe in detail the present invention constitution content and it is to be reached the effect of.
For convenience of explanation, each schema of the present invention is only to illustrate to be easier to understand the present invention, and its detailed ratio can
Demand according to design is adjusted.The upper and lower relation for relative component in figure described in the text, the people in this area
For all will be understood that it means the relative position of object, therefore it can all overturn and identical component is presented, this should all be belonged to together
The disclosed scope of this specification, holds first chat bright herein.
Fig. 1 illustrates the touch panel structure provided schematic diagram of the first preferred embodiment of the present invention, as shown in figure 1, the present invention
Contact panel 1 includes a sensing region 10, and wherein sensing region 10 may include a hollow framework or a substrate, wherein base
Plate may include hard substrate or flexible substrate, and can be formed by transparent or transparent materials.Sensing region 10 has one
First side 32, a second side 34, one the 3rd side 36 and a four side 38.First side 32 and the phase of second side 34
Correspondence and a parallel first direction (being X-axis in the present embodiment), the 3rd side 36 are corresponding with four side 38 and parallel 1 the
Two directions (being Y-axis in the present embodiment).The two ends of first side 32 connect with the 3rd side 36 and four side 38, the second side
The two ends on side 34 connect with the 3rd side 36 and four side 38.
In a wherein corner for sensing region 10, e.g. first side 32 is provided with the corner that the 3rd side 36 connects
One transmitter 12.And in another corner of sensing region 10, the corner that e.g. second side 34 connects with four side 38
It is provided with a detector 14, the present invention is to the setting corner of transmitter 12 and detector 14 and unrestricted.The transmitting of the present embodiment
Device 12 is preferably a generating laser, and the light sent can be laser, and its wavelength is preferably more than 800 nanometers, due to wavelength
More than the wavelength of visible ray, therefore the light will not be seen by human eye, also not interfere with the display effect of contact panel 1, but
Not limited to this.In the present invention, the light (not shown) that transmitter 12 is launched can be detected device 14 and be received, and contact panel 1
Further include a processor (not shown) to be connected with detector 14, when detector 14 receives light, an at least signal can be produced
And processor is transferred to, and processor can then be analyzed according to signal.The front of detector 14, alternative is provided with
One bandpass filter (band-pass filter) 22, bandpass filter 22 only allows the light of specific wavelength to pass through, with this reality
Apply for example, bandpass filter 22 can allow to be passed through by the light that transmitter 12 is sent, and the ring around contact panel 1
Border light will be completely cut off or be stopped by bandpass filter 22, and can not be transferred to detector 14, reduce detector 14 and receive ring
Environmental light source and the noise produced, improve the precision of contact panel.
In addition, the contact panel 1 of the present embodiment, which includes a plurality of first switch formula optical frames 16, is arranged in first side
32 including a plurality of second switch formula optical frames 18 with second side 34, being separately arranged in the 3rd side 36 and four side 38
On.Wherein each first switch formula optical frames 16 all has an open mode and close pattern with each second switch formula optical frames 18, when
When each second switch formula optical frames 18 of first switch formula optical frames 16 or each is in open mode, light can be totally reflected, relatively
Ground, when each second switch formula optical frames 18 of first switch formula optical frames 16 or each is in close pattern, can be such that light penetrates entirely.
And each first switch formula optical frames 16 is all electrically connected with a switch (not shown) respectively with each second switch formula optical frames 18, respectively
First switch formula optical frames 16 and each second switch formula optical frames 18 can respectively be switched on by the respectively switch open mode or
Close pattern.In other words, each first switch formula optical frames 16 or each second switch formula optical frames 18, which have, makes light be all-trans
The function of penetrating or make light penetrate entirely, can be by the independent switching of switch.In addition, in the present embodiment, it is more selective include to
A few level crossing 20, is arranged at the corner of sensing region 10, corner that for example first side 32 connects with four side 38 and
The corner that second side 34 connects with the 3rd side 36.Wherein level crossing 20 has changes opticpath by total reflection effect
Function.
Signal when the one first direction touch points of contact panel progress that Fig. 2 illustrates the first preferred embodiment of the invention judge
Figure.Transmitted as shown in Fig. 2 sending a light 11 by transmitter 12 along first side 32, by first on first side 32
Change light going direction after switched optical mirror 16A reflection, second side 34 is marched to along a first path L1, then through
Change light going direction after the reflection of first switch formula optical frames 16B on dual side-edge 34, be transferred to and detect along second side 34
Survey device 14.One second direction can be formed in the sensing region 10 of contact panel 1 by the first path L1 constituted of light 11
（That is Y-direction）Light line segment.In the present embodiment, on first side 32, only first switch formula optical frames 16A is by switching
Opening is switched to, remaining each first switch formula optical frames 16 is all closed.And on second side 34, only
There is the first switch formula optical frames 16B corresponding with first switch formula optical frames 16A positions to switch to opening by switching, its
Remaining each first switch formula optical frames 16 is all closed.Therefore, on first side 32, except first switch formula optics
Mirror 16A has the function of being totally reflected light 11, and remaining first switch formula optical frames 16, which all has, makes what light 11 was penetrated entirely
Function.On second side 34, except first switch formula optical frames 16B has the function of being totally reflected light 11, remaining the
One switched optical mirror 16, which all has, makes the function that light 11 is penetrated entirely.When contact panel 1 is not affected by touching, transmitter 12 is sent out
Go out after light 11, light 11 is sequentially reflected by first switch formula optical frames 16A and first switch formula optical frames 16B, afterwards and by
Detector 14 is received.And when contact panel 1 is touched, and touch points are located on the first path L1 in sensing region 10
When, by the light 11 sent from transmitter 12 is blocked by touch point, therefore detector 14 can not be transferred to, now with detecting
The processor that device 14 is connected can be touched according to first switch formula optical frames 16A and first switch formula optical frames 16B position, record
The coordinate position (for the present embodiment, as the coordinate of X-direction) touched on a first direction.
In the present embodiment, each first switch formula optical frames 16 on first side 32 and second side 34 can sequentially
Opening is switched to by switch, Fig. 3 is refer to, the contact panel that Fig. 3 illustrates the first preferred embodiment of the invention carries out one
Schematic diagram when first direction touch points judge.As shown in figure 3, first switch formula optical frames 16C and corresponding with its position
First switch formula optical frames 16D switches to opening by switch, and on first side 32 and second side 34
Remaining first switch formula optical frames 16 is all closed mode.Transmitter 12 sends a light 11 ' by first side 32
Change light going direction after one switched optical mirror 16C reflection, along a first path L1 ' travelings, then through second side 34
On first switch formula optical frames 16D reflection after be transferred to detector 14.Illustrated with the present embodiment, first path L1 ' and the
One path L1 is located on different X-axis coordinates, therefore first path L1 ' and first path L1 can be directed to the touch points of diverse location
Judged.It is worth noting that, in addition to first path L1 ' and first path L1, the present invention can more be sent out by transmitter 12
Go out other light (not shown), and by the different first switch formula optical frames 16 of switch switching, so produce other first
Path (not shown), is presented vertical direction (Y-axis).Each first path is parallel each other in sensing region 10, with complete
Judge the first direction coordinate of the touch points in sensing region 10.It is worth noting that, above-mentioned first side 32 and second side
Each first switch formula optical frames 16 on 34, its opening sequence is simultaneously unrestricted, but the first switch formula light on first side 32
When learning the unlatching of mirror 16, then on second side 34, the relative first switch formula optical frames 16 in its position also needs to open, by light
Line is transferred on detector 14.
Signal when the one second direction touch points of contact panel progress that Fig. 4 illustrates the first preferred embodiment of the invention judge
Figure.Sequentially transmitted as shown in figure 4, transmitter 12 sends a light 13 along first side 32, through positioned at first side 32 and the 4th
The level crossing 20A in the corner that side 38 connects reflects and transmitted along four side 38, and through being opened positioned at the second of four side 38
Pass formula optical frames 18A reflects and marches to the 3rd side 36 along one second path L2, then through the switching regulator positioned at the 3rd side 36
Optical frames 18B reflects and transmitted along the 3rd side 36, again through being located at the flat of the corner that second side 34 connects with the 3rd side 36
Face mirror 20B reflects and is transferred to detector 14 along second side 34.Second path L2 and foregoing first path L1 has an angle, and
The angle is preferably right angle, that is, first path L1 and the second path L2 preferably orthogonal.It is described in more detail, the present embodiment
In, on four side 38, only second switch formula optical frames 18A switches to opening by switching, and remaining each second
Switched optical mirror 18 is all closed.And on the 3rd side 36, only with second switch formula optical frames 18A positions
Corresponding second switch formula optical frames 18B switches to opening by switching, and remaining each second switch formula optical frames 18 is all
It is closed.Therefore, on four side 38, except second switch formula optical frames 18A has the work(for being totally reflected light
Can, remaining second switch formula optical frames 18, which all has, makes the function that light is penetrated entirely.On the 3rd side 36, open except second
Pass formula optical frames 18B has the function of being totally reflected light, and remaining second switch formula optical frames 18, which all has, makes light wear entirely
Saturating function.And on first side 32 and second side 34, closed mode is all presented in all first switch formula optical frames 16,
So that light can be penetrated entirely.The second path L2 that the present embodiment is produced by light 13 forms a first direction（That is X-direction）Light
Line line segment.When contact panel 1 is not affected by touching, the light 13 sent by transmitter 12 can walk along the second path L2,
It is detected device 14 to be received, and when contact panel 1 is touched, and touch points are when being located on the second path L2, due to from transmitting
The light 13 that device 12 is sent is blocked by touch point, therefore can not be transferred to detector 14, is now connected with detector 14
Processor can record touch points second direction according to second switch formula optical frames 18A and second switch formula optical frames 18B position
On coordinate position (for the present embodiment, as the coordinate of Y-direction).Similarly, in the present embodiment, positioned at the 3rd side 36
And each second switch formula optical frames 18 on four side 38 sequentially can switch to opening by switch, to produce other
Second path (not shown), and respectively horizontal direction (X-axis) is presented in second path, and touching in sensing region 10 is judged with complete
Touch the second direction coordinate of point.It is worth noting that, each second switch formula light on above-mentioned 3rd side 36 and four side 38
Mirror 18 is learned, its opening sequence is simultaneously unrestricted, but the second switch formula optical frames 18 on the 3rd side 36 is when opening, then positioned at the
On four side 38, the relative second switch formula optical frames 18 in its position is also needed to open, and light is transferred on detector 14.
In the present embodiment, level crossing 20A and 20B can also be substituted by switched optical mirror, i.e. second switch formula optical frames
18 corners and second side connected respectively positioned at the 3rd side 36, four side 38, first side 32 with four side 38
34 corners connected with the 3rd side 36.The light transfer mode that transmitter is sent to it is foregoing similar, do not repeat in addition.
Above-mentioned contact panel 1 carries out first direction touch points and judges to judge with second direction touch points respectively, with respectively
Obtain the X-axis coordinate and Y-axis coordinate of touch points.In addition, the first direction touch points of above-mentioned contact panel 1 judge and second direction
Touch points judge that the present invention carries out order to it and unrestricted, that is to say, that the present invention also can first carry out second direction touch points
Judge, just carry out first direction touch points judgement, even first direction touch points judge to judge to hand over second direction touch points
Mutually carry out, come under the present invention cover in the range of.
Below for switched optical mirror (including each first switch formula optical frames 16 and each the of contact panel of the present invention
Two switched optical mirrors 18) structure described.To simplify explanation, following figure only illustrates wherein first switch formula optical frames 16
Partial enlarged drawing, and each second switch formula optical frames 18 is in addition to position in the present invention, remaining structure and first switch formula optics
Mirror 16 is identical, therefore does not repeat in addition.
Fig. 5 A~5B is refer to, Fig. 5 A illustrate the pass of the first implementation aspect of the switched optical mirror of contact panel of the present invention
Closed state structure, Fig. 5 B illustrate the opening structure of the first implementation aspect of the switched optical mirror of contact panel of the present invention.
As shown in Fig. 5 A~5B, a first switch formula optical frames 16 ' includes one and is located to column liquid crystal layer 46 between two hyaline layers 42,
And between column liquid crystal layer 46 and hyaline layer 42, having further included an electrode layer 44.Hyaline layer 42 can be clear glass or modeling
Expect material, preferably hard material, and electrode layer 44 includes transparent material with good conductivity, such as tin indium oxide（indium
tin oxide,ITO）Or indium zinc oxide (indium zinc oxide, IZO) etc., but not limited to this.And electrode layer 44 and outside
Switch (not shown) be connected, can be switched by opening, a voltage is applied to electrode layer 44, and then changed to column liquid crystal layer
Liquid Crystal Molecules Alignment direction inside 46.When switch is closes, as shown in Figure 5A, a light L enters first switch by outside
Formula optical frames 16 ', can be perforated through first switch formula optical frames 16 ' after internal plural number time refraction.It is worth noting that, not
Apply alive to column liquid crystal layer 46, its refractive index is approximately equal to the refractive index of hyaline layer 42, thus when light by when, can
It is directed through to column liquid crystal layer 46 without being reflected.And when the switch is opened, as shown in Figure 5 B, a voltage puts on electrode
On layer 44, therefore change to the Liquid Crystal Molecules Alignment direction inside column liquid crystal layer 46, further change to column liquid crystal layer 46
Refractive index, now the refractive index of glass will be greater than the refractive index to column liquid crystal layer 46, now a light L ' by outside enter
First switch formula optical frames 16 ', total reflection will be produced when light L ' is transferred to the surface to column liquid crystal layer 46, and is changed
Light L ' direct of travel.Because this includes the switched optical mirror of liquid crystal layer structure, its switching speed is very fast, only about needs 30
Microsecond is changeable open mode or close pattern, therefore can lift the quality and speed of contact panel of the present invention.
Fig. 6 A~6B is refer to, Fig. 6 A illustrate the pass of second of implementation aspect of switched optical mirror of contact panel of the present invention
Closed state structure, Fig. 6 B illustrate the opening structure of second of implementation aspect of switched optical mirror of contact panel of the present invention.
As shown in Fig. 6 A~6B, a first switch formula optical frames 16 " includes a polarization spectroscope (polarizing beam
Splitter) 54 and a ferroelectric liquid crystal layer (ferroelectric liquid crystal layer) 52, in the present embodiment
Ferroelectric liquid crystal layer has birefringence (Birefrigence) feature, when applying an applied voltage, it will change ferroelectricity liquid
Liquid Crystal Molecules Alignment inside crystal layer 52, and then change the polarization direction of the light by ferroelectric liquid crystal layer 52, that is to say, that iron
Electro-hydraulic crystal layer 52 can have the feature of half-wave plate (Half Wave Plate), but not limited to this.The light of the present embodiment is preferably
Linearly polarized photon through ovennodulation, such as laser.When first switch formula optical frames 16 " when being closed mode, as shown in Figure 6A, outside one
The light L in portion passes through first switch formula optical frames 16 " when, first pass through after ferroelectric liquid crystal layer 52, the polarization direction of its light is not
Change, then the polarization spectroscope 54 for arranging in pairs or groups suitable so that the transparent polarization spectroscope 54 of light, opposite, work as first switch
When formula optical frames 16 " is opening, as shown in Figure 6B, applies a voltage in ferroelectric liquid crystal layer 52, change and pass through ferroelectric liquid crystals
The polarization direction of the light of layer 52.Light L ' outside one passes through first switch formula optical frames 16 " when, first pass through ferroelectric liquid crystals
After layer 52, the change of polarized direction of its light, then the polarization spectroscope 54 for arranging in pairs or groups suitable so that light can be by polarization spectroscope 54
Total reflection.The switch time of such a switched optical mirror, it is only about 10 microseconds.
The material characteristics of above-mentioned ferroelectric liquid crystal layer and polarization spectroscope are known to the technical staff of this area, therefore no longer
Repeat.It is worth noting that, according to the configuration of different ferroelectric liquid crystal layer 52 Yu polarization spectroscope 54, the first of this implementation aspect
Switched optical mirror 16 ", can also be the polarization direction that ferroelectric liquid crystal layer 52 changes the light passed through, polarization point during closed mode
Light microscopic 54 makes light penetrate entirely；During opening ferroelectric liquid crystal layer 52 do not change by light polarization direction, polarization spectro
Mirror 54 is totally reflected light, and it is configured in the covering scope for falling within the present invention.
Fig. 7 A~7B is refer to, Fig. 7 A illustrate the pass of the third implementation aspect of the switched optical mirror of contact panel of the present invention
Closed state structure, Fig. 7 B illustrate the opening structure of the third implementation aspect of the switched optical mirror of contact panel of the present invention.
As shown in Fig. 7 A~7B, first switch formula optical frames 16 ' " is made up of a plurality of micro- level crossings 62.Micro- level crossing 62 has rotation
Function, can change its angle relative to transmitter by switch.When first switch formula optical frames 16 ' " when being closed mode,
As shown in Figure 7 A, light L can be by first switch formula optical frames 16 ' ", and when first switch formula optical frames 16 ' is " by switch
During unlatching, as shown in Figure 7 B, all micro- level crossings 62 will simultaneously rotate and change its angle so that light L ' is micro- by each
The total reflection of level crossing 62, and change its direct of travel.It is worth noting that, this implementation aspect splits into switched optical mirror
Multiple micro- level crossings, can so be greatly lowered the switch time of switched optical mirror, according to the quantity of micro- level crossing, switching regulator
The switch time of optical frames is about 10 microseconds.
It is worth noting that, above-mentioned each switched optical mirror for implementing aspect is preferably switching regulator level crossing, it switchs frequency
Rate is about between 1K hertz (Hz)~1M hertz (Hz), and the light that the present invention is sent by transmitter, and its modulation frequency is then
About between 10M hertz (Hz)~1G hertz (Hz), that is to say, that light frequency of the invention is much larger than switched optical mirror
Switching frequency, consequently, it is possible to which detector 14 is by the frequency that can effectively distinguish light and the frequency of switched optical mirror, reduction is detectd
Survey device 14 and receive noise.In addition, above-mentioned each switched optical mirror for implementing aspect is only that several different possibility implement structure, this
Invention is not limited to this, as long as switched optical mirror meets in the state of difference, may be such that light has and penetrates and be all-trans entirely
The feature penetrated, should all belong in the range of of the invention cover.
In addition, the usage quantity in order to reduce switched optical mirror, the second preferred embodiment of the invention proposes a touch-control
Panel.Fig. 8 is refer to, Fig. 8 illustrates the touch panel structure provided schematic diagram of the second preferred embodiment of the present invention, as shown in figure 8, this
Its structure of the contact panel 2 of invention is roughly the same with contact panel 1, includes a sensing region 10.Sensing region 10 has one
First side 32, a second side 34, one the 3rd side 36 and a four side 38.First side 32 and the phase of second side 34
Correspondence and a parallel first direction (being X-axis in the present embodiment), the 3rd side 36 are corresponding with four side 38 and parallel 1 the
Two directions (being Y-axis in the present embodiment).The two ends of first side 32 connect with the 3rd side 36 and four side 38, the second side
The two ends on side 34 connect with the 3rd side 36 and four side 38.In the wherein corner, e.g. first of sensing region 10
Side 32 is provided with a transmitter 12 with the corner that the 3rd side 36 connects.And in another corner of sensing region 10, for example
It is that the corner that second side 34 connects with four side 38 is provided with a detector 14.In addition, the contact panel 2 of the present embodiment is more
Include a plurality of first switch formula optical frames 16, be arranged on first side 32 and second side 34.Separately include a plurality of the
Two switched optical mirrors 18, are arranged on the 3rd side 36 and four side 38.The present embodiment is preferably real with the present invention first
Apply a difference to be, in the inside of sensing region 10, be more provided with a plurality of cylindrical lenses 72, and cylindrical lens 72 is located at
On the path that light passes through, each switched optical mirror of each correspondence of cylindrical lens 72 is set.Transmitter 12 sends a light, passes through sense
Survey region 10 and produce one the 3rd path L3.When the light in sensing region 10 is by cylindrical lens 72, its light
Diameter will be amplified and broaden by cylindrical lens 72, when light leaves sensing region 10 again by cylindrical lens 72, light
Diameter will be reduced by cylindrical lens 72.Consequently, it is possible to due to wider by the ray diameter in sensing region 10, therefore can
To reduce the usage quantity of switched optical mirror, cost of manufacture is further reduced.It will be appreciated that the present invention second is preferably implemented
The contact panel 2 of example, the structure of its switched optical mirror can be combined with each other with the first preferred embodiment, should also belong to the present invention
Covering scope in.
In summary, it is provided by the present invention touch panel structure provided, a plurality of switched optical mirrors are provided with, and only set
There are a transmitter and a detector.The light sent by transmitter, row is changed by the reflection of each switched optical mirror
Enter direction, be finally detected device and received.Therefore multigroup transmitter and detector need not be set, saving cost and drop is reached
Effect of low power consuming.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements done etc. should be included within the scope of protection of the invention.
Claims (13)
1. a kind of contact panel, it is characterised in that include:
One sensing region, the wherein sensing region have a first side, a second side, one the 3rd side and one the 4th side
Side, the first side is corresponding with the second side, and the 3rd side is corresponding with the four side, the two ends of the first side
Connect with the 3rd side and the four side, the two ends of the second side and the 3rd side and the four side phase
Connect；
One transmitter, to produce a light, the transmitter is located at the corner that the first side connects with the 3rd side；
One detector, to receive the light, the detector is located at the corner that the second side connects with the four side；And
A plurality of switched optical mirrors, be arranged in the first side of the sensing region, the second side, the 3rd side and
The four side, when judging the touch points of a first direction, the first side and the second side only have a pair it is corresponding
Switched optical mirror is an opening, and when the opening light can be totally reflected, the first side and second side
Those switched optical mirrors of remaining of side are a closed mode, when the closed mode light can be made to penetrate entirely, the transmitting
The light that device is sent is transmitted through the first side, and through the reflection of one of this pair of corresponding switched optical mirror along one
First path marches to the second side, then is transferred to this through wherein another reflection of this pair of corresponding switched optical mirror
Detector.
2. contact panel according to claim 1, it is characterised in that wherein further include a plurality of switches, is electrically connected with each
The switched optical mirror.
3. contact panel according to claim 1, it is characterised in that wherein respectively the switched optical mirror includes to column
Liquid crystal layer, it is located between two panels transparent material.
4. contact panel according to claim 1, it is characterised in that wherein respectively the switched optical mirror includes a ferroelectricity
Liquid crystal layer and a spectroscope.
5. contact panel according to claim 1, it is characterised in that wherein respectively the switched optical mirror has rotational work
Can, and each switched optical mirror constituted by a plurality of micro- level crossings.
6. contact panel according to claim 1, it is characterised in that further include an at least cylindrical lens, be arranged at the sense
Survey in region, and positioned at the bang path of the light, respectively respectively the switched optical mirror is set cylindrical lens correspondence.
7. contact panel according to claim 1, it is characterised in that wherein further include a bandpass filter and be arranged at this and detect
Survey in front of device.
8. contact panel according to claim 1, it is characterised in that wherein the modulation frequency of the transmitter is between 10MHz
Between~1GHz.
9. contact panel according to claim 1, it is characterised in that wherein the switching frequency of the switched optical mirror between
Between 1KHz~1MHz.
10. contact panel according to claim 1, it is characterised in that further include a substrate in the sensing region.
11. contact panel according to claim 1, it is characterised in that wherein the transmitter is a generating laser, the light
Line is laser, and the switched optical mirror is switching regulator level crossing.
12. contact panel according to claim 1, it is characterised in that an at least level crossing is further included, positioned at the Touch Zone
The corner that the corner and the second side that the first side of this in domain connects with the four side connect with the 3rd side, to one
When the touch points of second direction judge, the 3rd side only has a pair of corresponding switched optical mirrors to be somebody's turn to do with the four side
Opening, when the opening light can be totally reflected, and remaining of the 3rd side and the four side are opened
Pass formula optical frames is the closed mode, and all those switched optical mirrors of the first side and the second side are the closing shape
State, can be such that the light penetrates full when the closed mode, and the light that the transmitter is sent sequentially is transmitted along the first side, warp
The level crossing in the corner connected positioned at the first side with the four side reflects and transmitted along the four side, and through being located at
One of this pair of corresponding switched optical mirror of the four side reflects and marches to the 3rd along one second path
Side, then through wherein another reflection of this pair of corresponding switched optical mirror positioned at the 3rd side along the 3rd side
Side is transmitted, and is passed again through being located at the level crossing reflection in the corner that the second side connects with the 3rd side along the second side
The detector is handed to, second path and the first path are in being not parallel relation in the sensing region.
13. contact panel according to claim 12, it is characterised in that wherein the level crossing can be by for the opening
The switched optical mirror substitute.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310481227.8A CN104571722B (en) | 2013-10-15 | 2013-10-15 | Contact panel |
| TW103120062A TWI498795B (en) | 2013-10-15 | 2014-06-10 | Touch panel |
| TW103210213U TWM491887U (en) | 2013-10-15 | 2014-06-10 | Touch panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310481227.8A CN104571722B (en) | 2013-10-15 | 2013-10-15 | Contact panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104571722A CN104571722A (en) | 2015-04-29 |
| CN104571722B true CN104571722B (en) | 2017-09-15 |
Family
ID=52576879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310481227.8A Expired - Fee Related CN104571722B (en) | 2013-10-15 | 2013-10-15 | Contact panel |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104571722B (en) |
| TW (2) | TWI498795B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104571722B (en) * | 2013-10-15 | 2017-09-15 | 宸鸿科技(厦门)有限公司 | Contact panel |
| CN106357347B (en) * | 2015-07-15 | 2021-05-11 | 弗莱克斯电子有限责任公司 | Optical communication, audio transmission and charging system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101681076A (en) * | 2007-06-19 | 2010-03-24 | 日本电气株式会社 | Optical switch |
| CN102375616A (en) * | 2010-08-19 | 2012-03-14 | 广达电脑股份有限公司 | Optical contact control structure |
| CN102662531A (en) * | 2011-12-20 | 2012-09-12 | 景智电子股份有限公司 | Touch control module |
| CN203561971U (en) * | 2013-10-15 | 2014-04-23 | 宸鸿科技(厦门)有限公司 | Touch control panel |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5232672B2 (en) * | 2009-01-23 | 2013-07-10 | 日東電工株式会社 | Optical waveguide with light emitting element and optical touch panel |
| TWI405109B (en) * | 2009-07-03 | 2013-08-11 | Pixart Imaging Inc | Optical touch display |
| TWI439905B (en) * | 2011-01-10 | 2014-06-01 | Young Lighting Technology Corp | Touch module and touch detecting method |
| TWI415008B (en) * | 2011-01-25 | 2013-11-11 | Pixart Imaging Inc | Image-sensing module and optical sensing system |
| TWI446249B (en) * | 2011-03-03 | 2014-07-21 | Wistron Corp | Optical imaging device |
| TWI464649B (en) * | 2012-03-22 | 2014-12-11 | Quanta Comp Inc | Optical touch control system |
| CN104571722B (en) * | 2013-10-15 | 2017-09-15 | 宸鸿科技(厦门)有限公司 | Contact panel |
-
2013
- 2013-10-15 CN CN201310481227.8A patent/CN104571722B/en not_active Expired - Fee Related
-
2014
- 2014-06-10 TW TW103120062A patent/TWI498795B/en active
- 2014-06-10 TW TW103210213U patent/TWM491887U/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101681076A (en) * | 2007-06-19 | 2010-03-24 | 日本电气株式会社 | Optical switch |
| CN102375616A (en) * | 2010-08-19 | 2012-03-14 | 广达电脑股份有限公司 | Optical contact control structure |
| CN102662531A (en) * | 2011-12-20 | 2012-09-12 | 景智电子股份有限公司 | Touch control module |
| CN203561971U (en) * | 2013-10-15 | 2014-04-23 | 宸鸿科技(厦门)有限公司 | Touch control panel |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201514807A (en) | 2015-04-16 |
| TWI498795B (en) | 2015-09-01 |
| TWM491887U (en) | 2014-12-11 |
| CN104571722A (en) | 2015-04-29 |
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