CN102968223B - Infrared touch panel - Google Patents
Infrared touch panel Download PDFInfo
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- CN102968223B CN102968223B CN201210515263.7A CN201210515263A CN102968223B CN 102968223 B CN102968223 B CN 102968223B CN 201210515263 A CN201210515263 A CN 201210515263A CN 102968223 B CN102968223 B CN 102968223B
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Abstract
The invention discloses a kind of infrared touch panel, comprise light-guiding pillar, touch-screen body, circuit board and infrared tube, described light-guiding pillar is provided with and light-guiding pillar all-in-one-piece cushion cap, described cushion cap is between touch-screen body and circuit board, and touch-screen body is fixedly connected with cushion cap, circuit board is fixedly connected with cushion cap.The infrared light that the present invention can make infrared emission tube send with minimum fading transmission to infrared receiving tube, can avoid again producing rim effect, enable touch-screen body and circuit board position installation, the depth of parallelism making touch-screen body keep higher, reduces hoverheight further.
Description
Technical field
The present invention relates to a kind of touch-screen, particularly relate to a kind of infrared touch panel.
Background technology
Existing infrared touch product, its adopt mode be all by by being arranged on X along touch area surrounding, Y-direction arranges uniform infrared transmitting tube and infrared receiving tube, driving circuits drives infrared transmitting tube and infrared receiving tube under the control of MCU run time version, the infrared ray matrix that corresponding scanning formation X-direction and Y-direction are intersected anyhow.When there being touch, finger or other object will block the infrared ray anyhow through this point, judge position on the touchscreen, touch point by control system.
At present in infrared touch panel field, if the patent No. is " a kind of catoptron be applied on touch-screen " of 200820109789.4, this invention fundamental purpose is: utilize principle of reflection to incite somebody to action, and the transmitting and receiving element number reduced on infrared touch panel reduces by half; The cardinal principle being " a kind of multi-point touch panel of pure flat structure " this invention of 201020271758.6 as the patent No. is: on the basis of common infrared touch panel, add a light guide plate, for filling the cavity on common touch-screen touch face, thus reach the effect that surface seems pure flat; As " a kind of infrared touch panel and the multi-point touch locating method thereof " etc. of 200710028616.X.Be no matter the basic assembling mode of single-point or Multi-point infrared touch-screen, its infrared touch panel in existing infrared touch panel patented technology or product, be all that infrared tube is put on the touch face of touch-screen, in the structure shown here, all there is following problem:
1, the ability of anti-light interference.Existing infrared touch panel, because infrared tube is placed on touch face, outside light is easy to be mapped to infrared receiver, thus affects the normal work of touch-screen, and therefore general screen body all normally can not work under high light (as sunlight or stronger incandescent lamp).
2, all there is wider and higher edge projection in four limits in infrared touch panel touch face.In existing infrared touch panel field; infrared tube is generally all arranged on the top that screen body touches face; add the thickness of infrared tube operator guards; thus become higher and wider edge projection at the quadrilateral of screen body; very large restriction is produced to the installation of touch-screen and touch apparatus appearance design, is not easy for the manufacture of real integrated infrared touch product.
For the problems referred to above, US Patent No. 2007/0165008 A1 " a kind of Minitype infrared screen touch screen device ", reduce touch-screen border width and cost of products." comprise a touch-screen be arranged in framework, one is arranged on display screen rear portion circuit board below to this device, installs infrared launcher on circuit boards and an infrared receiving device installed on circuit boards for one.First reflection unit and infrared launcher carry out optical communication, and the first described reflection unit can change the direction of the infrared beam that display screen rear portion infrared launcher produces, and makes it through the front area of described display screen.Second reflection unit and first reflection unit carry out optical communication, and second reflection unit can, by changing the direction of the infrared beam of described display screen front end, make it arrive display screen rear portion infrared detecting device." but this technology also exists following not enough in the application:
1. because infrared launcher and infrared receiving device are installed on circuit boards, and circuit board is arranged on the back side of display screen, reflection unit and display screen are again separate, infrared light path is launched dress and not easily confirms with the relative position of reflection unit and fix reliably.Everybody knows infrared launcher and infrared receiving device needs one_to_one corresponding, very large trouble will certainly be brought like this to Installation and Debugging, simultaneously display screen back side out-of-flatness and display screen change with reflective structure relative position all can have influence on installation accuracy, and installation accuracy directly can have influence on again the performance of touch product.
2. due to the circuit board of installation infrared emitter and the circuit board of infrared receiving device, all be arranged on the back side of display screen, and reflection unit exceeds the front of display screen, there is certain thickness in display screen, the infrared light of the transmitting causing infrared launcher is passed to infrared receiving device and receives path length of need passing by reflection unit by this, and the light intensity causing infrared receiving device to receive is very weak.Make this infrared screen installation cost high, poor reliability, antijamming capability is weak.
3. touch face is display screen outside surface, and long-time use can make a big impact to display screen, and hoverheight also can not solve simultaneously, and namely in use procedure, also " in point " touch-screen does not just respond, and so very easily causes various maloperation.
The patent No. is separately had to be 200420117952.3 " a kind of light path systems using the infrared touch panel of reflective mirror ", " by the infrared emission be uprightly arranged on the circuit board that parallels with display surface and receiving tube array and front thereof, become the reflective mirror of miter angle to form with display surface.The infrared ray that infrared transmitting tube is launched is by after mirror reflection, and the reflective mirror being arrived receiving tube front by display surface front is reflected to receiving tube.This structure is particularly suitable for touch display, and reflective mirror is arranged between display surface and front panel and forms light-path, and transmitting and receiving pipe is arranged on display element circuit board, reduces thickness or the height of touch-screen at width.But " there is following deficiency in the application in this technology:
1. when the circuit board of installation infrared power valve and receiving tube is placed in the back side of aobvious screen, and the front exceeding display screen of reflective mirror, all there is certain thickness in display screen, this path length that will the infrared light of infrared transmitting tube caused need to pass by infrared receiving tube, and the light intensity causing infrared receiving tube to receive is very weak.Make this infrared screen installation cost high, poor reliability, antijamming capability is weak.
2. infrared light reflection face becomes miter angle with display surface, enters reflecting surface and causes the decline of reflecting properties to cause the decline of signal quality, make the reliability decrease of work according to mirror construction entering that stray light will be caused to disturb with dust.During according to 45 degree of inclined-planes of right angle prism as reflective surface, the rim effect of infrared touch panel can be obvious, and this will have a strong impact on touch performance.
If when 3. this system is installed on display screen front, the effect reducing touch-screen thickness or height can not be reached.If circuit board is arranged on the back side of display screen, and the circuit board top that infrared transmitting tube and infrared receiving tube are installed, mirror apparatus and display screen are again separate, on infrared light path, the relative position of power valve and reflection unit not easily confirms and fixes reliably, and infrared transmitting tube and infrared receiving tube need one_to_one corresponding, very large trouble will certainly be brought like this to Installation and Debugging, simultaneously display screen back side out-of-flatness and display screen change with reflective structure relative position all can have influence on installation accuracy, and installation accuracy directly can have influence on again the performance of touch product.Circuit board is arranged on the back side of display screen, and reflex reflector and display screen are again separate, and both want position extremely unstable.
4. touch face is display screen outside surface, and long-time use can make a big impact to display screen, and hoverheight also can not solve simultaneously, and namely in use procedure, also " in point " touch-screen does not just respond, and so very easily causes various maloperation.
Summary of the invention
The object of the invention is to the problems referred to above overcoming the existence of existing infrared touch panel, a kind of novel infrared touch panel is provided.The infrared light that the present invention can make infrared emission tube send with minimum fading transmission to infrared receiving tube, can avoid again producing rim effect, enable touch-screen body and circuit board position installation, the depth of parallelism making touch-screen body keep higher, reduces hoverheight further.
For achieving the above object, the technical solution used in the present invention is as follows:
A novel infrared touch panel, comprises light-guiding pillar, touch-screen body, circuit board and infrared tube, it is characterized in that: described light-guiding pillar is provided with and light-guiding pillar all-in-one-piece cushion cap, touch-screen body surrounding is fixedly installed on described cushion cap.
Described cushion cap is between touch-screen body and circuit board, and touch-screen body is fixedly connected with cushion cap, and circuit board is fixedly connected with cushion cap.
Inside described light-guiding pillar, horizontal expansion forms described cushion cap, and outside vertically extends to form shirt rim, and circuit board is sealedly and fixedly connected with cushion cap and shirt rim respectively, and shirt rim, light-guiding pillar, cushion cap and circuit board enclose formation one closed chamber, and infrared tube is positioned at closed chamber.
The xsect of described light-guiding pillar becomes the convex shape of inclination, and the bottom indent in the middle part of convex shape, side extends to form cushion cap, and opposite side extends to form vertical shirt rim.
The inner concave of described convex shape light-guiding pillar, lateral surface, medial surface are the combination of arcwall face and plane.
Described inner concave is arcwall face, lateral surface and medial surface are plane, the angle in lateral surface and face, cushion cap place is less than 45 ° or be greater than 45 ° and be less than 55 ° for being greater than 39.5 °, and the angle in medial surface and face, cushion cap place is less than 90 ° or be greater than 90 ° and be less than 140 ° for being greater than 64 °.
Described inner concave is arcwall face, and lateral surface is arcwall face, and medial surface is plane, and the angle in medial surface and face, cushion cap place is less than 90 ° or be greater than 90 ° and be less than 140 ° for being greater than 64 °.
Described inner concave is plane, parallel with touch-screen body or at grade, lateral surface and medial surface are arcwall face.
Described inner concave, lateral surface and medial surface are arcwall face.
Described inner concave, lateral surface and medial surface are plane, the angle in lateral surface and face, cushion cap place is less than 45 ° or be greater than 45 ° and be less than 55 ° for being greater than 39.5 °, and the angle in medial surface and face, cushion cap place is less than 90 ° or be greater than 90 ° and be less than 140 ° for being greater than 64 °.
Described touch-screen body is parallel with the upper surface of cushion cap, and described circuit board is parallel with the lower surface of cushion cap.
Described cushion cap, circuit board and touch-screen body are tightly connected formation U-shaped cavity, and the opening of this U-shaped cavity to be tightly connected formation closed chamber by web member, and infrared tube is positioned at this closed chamber.Described web member can be the combination of dustproof foam and fluid sealant.
Described touch-screen body is bonding with the mode of being tightly connected of cushion cap, and circuit board is bonding with the mode of being tightly connected of cushion cap or arranges seal and be bolted.
Described light-guiding pillar is provided with link slot, and touch-screen body surrounding is embedded to be arranged in link slot.
Described touch-screen body section is inverted " convex " font, body touch-surface is shielded in " convex " shape touch-screen body top formation of falling, bottom center section protrudes and forms boss, touch-screen body surrounding is fixedly connected on cushion cap, and described circuit board is arranged in the cavity formed with touch-screen body lower boss sidewall inside cushion cap.
Described circuit board is bonded in down the step place of " convex " shape touch-screen body both sides.
Described infrared touch panel also comprises a backplate, described backplate is positioned at the bottom of boss and cushion cap in the middle part of touch-screen body, and bonding with the bottom of boss in the middle part of touch-screen body and cushion cap, circuit board is arranged in the relative closed chamber that surrounded by touch-screen body, cushion cap, backplate.
Described backplate is sheet metal, and metal casing is provided with the threaded hole of fixing metal backplate.
Described backplate is mylar sheet.
Described touch-screen body is bonded by double glazing or clear plastic and forms entirety.
Described touch-screen body is formed by a glass or clear plastic cutting.
Described touch-screen body is sealedly and fixedly connected on cushion cap, and the negator face of circuit board is bonding with the touch-screen body back side, and the infrared tube on circuit board is all positioned at inside cushion cap.
The connection bonding with the upper surface of cushion cap of described touch-screen body.
The inside surface of described touch-screen body and light-guiding pillar is fitting to connection.
The front of described touch-screen body or the back side are provided with at least one deck barrier bed, and described barrier bed is positioned at touch-screen body non-display area.
The surrounding of described touch-screen body is provided with barrier bed.
Described barrier bed is the thin slice be made up of adhesive tape, light-shielding sheet, trnaslucent materials, plastic foil or sheet metal, the connection bonding with touch-screen body of described thin slice.
Described barrier bed is coated in painting layer on touch-screen body or ink coating.
The thickness of described barrier bed is 0.003-2mm.
Employing the invention has the advantages that:
One, in the present invention, described light-guiding pillar is provided with and light-guiding pillar all-in-one-piece cushion cap, described cushion cap is between touch-screen body and circuit board, and touch-screen body is fixedly connected with cushion cap, circuit board is fixedly connected with cushion cap, fixing infrared tube is on circuit boards positioned at below the light-guiding pillar outside cushion cap, compared with the structure of being located by touch-screen body with light-guiding pillar in prior art, the present invention adopts suspended deck structure, touch-screen body installs location by cushion cap, when mounted, touch-screen body can quick position in the integrated frame structure formed by light-guiding pillar, globality is better, correspondingly make circuit board, infrared transmitting tube and infrared receiving tube also can be installed by quick position, make infrared touch product Installation and Debugging easy, be conducive to the stable of whole touch screen structure, make the depth of parallelism of touch-screen body and degree of accuracy higher, touch precision and the response speed of touch-screen can be promoted, due to the supporting role of cushion cap, the touch-screen body thinner than traditional infrared touch-screen can be used, use thinner touch-screen body, production material can not only be saved, reduce production cost, infrared light transmission path on the touchscreen is also made to shorten, transmission path shortens and can reduce the divergence of infrared light, improve and touch precision, thinner touch-screen body also makes whole touch-screen more create an aesthetic feeling, be conducive to enhancing one's market competitiveness, according to actual needs simultaneously, produce the cushion cap of different-thickness, coordinate, can improve the depth of parallelism of touch-screen body with the touch-screen body of different-thickness, unlimited reduction touches hoverheight problem, solve in prior art touch that hoverheight is higher, touch-screen body is not easily located, the depth of parallelism is low, service life of equipment is low and touch-screen four limit have higher and compared with broadside along protruding problem.
Two, in the present invention, inside described light-guiding pillar, horizontal expansion forms described cushion cap, outside vertically extends to form shirt rim, circuit board is sealedly and fixedly connected with cushion cap and shirt rim respectively, shirt rim, light-guiding pillar, cushion cap and circuit board enclose formation one closed chamber, infrared tube is positioned at closed chamber, adopt this structure, because infrared tube is arranged in annular seal space, the interference of extraneous high light to infrared transmitting tube and infrared receiving tube can be reduced, improve the degree of accuracy of signal transmitting and receiving, and shirt rim has and prevents dust from entering effect in touch-screen, the serviceable life of touch-screen can be extended.
Three, in the present invention, the xsect of described light-guiding pillar becomes the convex shape of inclination, bottom indent in the middle part of convex shape, side extends to form cushion cap, opposite side extends to form vertical shirt rim, cushion cap and shirt rim are and extend to form, be integral type structure with light-guiding pillar, light-guiding pillar is assembled infrared beam and/or is reflected and/or reflect, infrared beam is made to pool the touch area of directional light by touch-screen as far as possible, reduce the decay of infrared signal, strengthen the signal intensity of infrared beam, improve the antijamming capability of touch-screen.
Four, in the present invention, the inner concave of described convex shape light-guiding pillar, lateral surface, medial surface is the combination of arcwall face and plane, be applicable to different-thickness, the touch-screen of unlike material, and by the combination of arcwall face and plane, be convenient to the convergence and the reflection that adjust infrared light, the distance of suitable adjustment infrared tube and arcwall face, the infrared light of the emission angle dispersion that infrared tube can be sent at transmitting terminal pools less parallel light onwards transmission, approximately parallel infrared light within the scope of larger angle can be converged again at receiving end, sensing range can be increased and can strengthen again reception infrared signal intensity, thus be conducive to the loss reducing infrared signal, improve the antijamming capability of infrared touch product, improve the touch precision of infrared touch product.
Five, in the present invention, described inner concave is arcwall face, lateral surface and medial surface are plane, the angle in lateral surface and face, cushion cap place is less than 45 ° or be greater than 45 ° and be less than 55 ° for being greater than 39.5 °, the angle in medial surface and face, cushion cap place is less than 90 ° or be greater than 90 ° and be less than 140 ° for being greater than 64 °, infrared light is converged by inner concave and reflects, be convenient to the convergence of infrared light, again by lateral surface and medial surface reflection, angle within the scope of this can ensure that full transmitting occurs the infrared light that power valve sends on infrared reflecting interface, prevent the loss of infrared signal, the angle of suitable adjustment refracting interface and vertical direction, the infrared light after reflecting can be made again after refracting interface refraction to be parallel to the direction transmission of surface level, rim effect can be avoided again simultaneously.
Six, in the present invention, described inner concave is arcwall face, lateral surface is arcwall face, medial surface is plane, the angle in medial surface and face, cushion cap place is less than 90 ° or be greater than 90 ° and be less than 140 ° for being greater than 64 °, infrared light is by twice convergence of inner concave and lateral surface and transmitting, the convergence of further guarantee infrared light, reduce the loss of infrared light, reflex on touch-screen body by medial surface again, and the angle in medial surface and face, cushion cap place is less than 90 ° or be greater than 90 ° and be less than 140 ° for being greater than 64 °, can avoid rim effect.
Seven, in the present invention, described inner concave is plane, parallel with touch-screen body or at grade, lateral surface is arcwall face, medial surface is arcwall face, and infrared light is reflected by inner concave, then is converged by lateral surface and medial surface and reflexed on touch-screen body, decrease the infrared light loss in light-guiding pillar, improve touch precision.
Eight, in the present invention, described inner concave, lateral surface and medial surface are plane, the angle in lateral surface and face, cushion cap place is less than 45 ° or be greater than 45 ° and be less than 55 ° for being greater than 39.5 °, the angle in medial surface and face, cushion cap place is less than 90 ° or be greater than 90 ° and be less than 140 ° for being greater than 64 °, infrared light directly reflexes on touch-screen body by inner concave, lateral surface and medial surface, be convenient to control the distance between infrared light and touch-screen body, thus be conducive to reducing hoverheight.
Nine, in the present invention, described inner concave, lateral surface and medial surface are arcwall face infrared light by the convergence in three faces and reflection, further reduce the loss of infrared light.
Ten, in the present invention, described touch-screen body is parallel with the upper surface of cushion cap, described circuit board is parallel with the lower surface of cushion cap, this structure can not only strengthen the depth of parallelism of screen body, also make the corresponding precision between infrared transmitting tube with light-guiding pillar, between infrared receiving tube with light-guiding pillar higher, being conducive to the concentration class strengthening infrared light, overcoming the touch early response problem caused because touching hoverheight further.
11, in the present invention, described light-guiding pillar is provided with link slot, touch-screen body surrounding is embedded to be arranged in link slot, and make light-guiding pillar be combined tightr with touch-screen body, in whole touch-screen, the stability of each parts is better.
12, in the present invention; described cushion cap, circuit board and touch-screen body are tightly connected formation U-shaped cavity; the opening of this U-shaped cavity to be tightly connected formation closed chamber by web member; infrared tube is positioned at this closed chamber; this closed chamber forms second protection to the infrared transmitting tube on circuit board and circuit board; can prevent outside high light, dust or water from entering touch-screen inside from the fine gap between each parts of touch-screen; the transmitting affecting infrared receiving/transmission pipe connects precision, and this structure is conducive to the serviceable life of improving touch-screen.
13, in the present invention, described touch-screen body is bonding with the mode of being tightly connected of cushion cap, circuit board is bonding with the mode of being tightly connected of cushion cap or arranges seal and be bolted, compared with directly circuit board being bonded in below touch-screen body with prior art, first this structure makes the infrared tube on circuit board and circuit board more stable, even if use for a long time, also transmitting and receiving precision can not be reduced, the result of use of touch-screen is better, secondly, when circuit board or touch-screen body damage, due to inconvenience dismounting, prior art needs to change circuit board and touch-screen body simultaneously, and adopt this mode only to need to change separately to damage parts.
14, in the present invention, described touch-screen body section is inverted " convex " font, body touch-surface is shielded in " convex " shape touch-screen body top formation of falling, bottom center section protrudes and forms boss, and touch-screen body surrounding is fixedly connected on cushion cap, and described circuit board is arranged in the cavity formed with touch-screen body lower boss sidewall inside cushion cap, pass through circuit board position, also just change the position of infrared tube, decrease the seal ring thickness of traditional infrared screen, ultralow ultra-narrow frame can be accomplished; On the other hand, specific Beam Control lens can be become according to light source design again, meet and touch Scanning Detction to the requirement of light source.
15, in the present invention, described circuit board is bonded in down the step place of " convex " shape touch-screen body both sides, adopt this structure infrared tube at touch-screen body ground floor back, can effectively reduce touch-screen integral thickness, simultaneously owing to adopting light-guiding pillar to reach super-thin frame, ultralow frame, and ultralow hoverheight.
16, in the present invention, described infrared touch panel also comprises a backplate, described backplate is positioned at the bottom of boss and cushion cap in the middle part of touch-screen body, and it is bonding with the bottom of boss in the middle part of touch-screen body and cushion cap, circuit board is arranged in the relative closed chamber that surrounded by touch-screen body, cushion cap, backplate, effectively can avoid dust, the impact that other material such as water transmits infrared light, under guarantee mal-condition, the normal use of touch screen, improves the protective of product simultaneously.
17, in the present invention, described touch-screen body is sealedly and fixedly connected on cushion cap, negator face and the bonding connection in the touch-screen body back side of circuit board, and the infrared tube on circuit board is all positioned at inside cushion cap, this structure makes the infrared tube on circuit board and circuit board more stable in touch-screen, and infrared receiving tube accurately can receive the infrared light after light-guiding pillar reflection that corresponding infrared transmitting tube is launched.
18, in the present invention, owing to being provided with barrier bed in the front of touch-screen body non-display area or the back side, therefore extraneous high light is difficult to penetrate barrier bed and is irradiated to infrared tube, reduce the interference of extraneous high light to infrared tube, improve the degree of accuracy of signal transmitting and receiving, simultaneously to being arranged on the circuit board at the touch-screen body back side, infrared tube works the effect of blocking, make product appearance more create an aesthetic feeling, be conducive to expanding the market competitiveness; Overcome the shortcoming that the anti-light interference performance of touch-screen in prior art is poor, product lacks aesthetic feeling.
19, in the present invention; also barrier bed is provided with equally in the surrounding of described touch-screen body; this structure can stop extraneous high light through the viewing area entering touch-screen body after light-guiding pillar from touch-screen body surrounding; the barrier bed arranged with front or the back side of touch-screen body non-display area coordinates; can to infrared tube general protection, anti-light interference performance is stronger.
20, in the present invention, described barrier bed is the thin slice be made up of adhesive tape, light-shielding sheet, trnaslucent materials, plastic foil or sheet metal, the connection bonding with touch-screen body of described thin slice, the anti-light interference performance of touch-screen in prior art is poor, the shortcoming of product shortage aesthetic feeling to use common material and simple bonding way just can overcome, structure is simple, with low cost; Correspondingly use sheet metal as barrier bed, also there is the advantage reducing external electromagnetic and disturb circuit board.
21, in the present invention, use painting layer or ink coating as barrier bed, not only overcome the shortcoming that the anti-light interference performance of touch-screen in prior art is poor, product lacks aesthetic feeling, also there is technique simple, advantage with low cost.
22, in the present invention; the thickness of described barrier bed is 0.003-2mm; if barrier bed thickness is greater than 2mm; the infrared light reflected through light-guiding pillar can be blocked, cause touch hoverheight higher, if barrier bed thickness is less than 0.003mm; extraneous high light will cause interference through touch-screen body to infrared tube; and the thickness of barrier bed is set to 0.003-2mm, good protective effect can be played to circuit board, infrared tube, can not cause again and touch the higher problem of hoverheight.
23, frame is reduced to about 3MM by traditional 20MM by technical scheme of the present invention, and frame height reduces to about 1..5MM by 5MM, within hoverheight reduces to 0.3MM by 3-5MM.
24, in the present invention, the touch-screen system formed by light-guiding pillar, touch-screen body, circuit board, infrared tube, is provided separately with display screen, both can sell touch-screen separately, sells, meet different user needs together with after also can assembling with display screen.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 1 structural representation
Fig. 2 is the embodiment of the present invention 2 structural representation
Fig. 3 is the embodiment of the present invention 3 structural representation
Fig. 4 is the embodiment of the present invention 4 structural representation
Fig. 5 is the embodiment of the present invention 7 structural representation
Fig. 6 is the embodiment of the present invention 8 structural representation
Fig. 7 is the embodiment of the present invention 11 structural representation
Fig. 8 is the embodiment of the present invention 12 structural representation
Fig. 9 is the embodiment of the present invention 13 structural representation
Figure 10 is the embodiment of the present invention 14 structural representation
Figure 11 is the embodiment of the present invention 15 structural representation
Figure 12 is the embodiment of the present invention 16 structural representation
Figure 13 is the touch-screen plan structure schematic diagram in Figure 12
Be labeled as in figure: 1, light-guiding pillar, 2, touch-screen body, 3, circuit board, 4, infrared tube, 5, cushion cap, 6, shirt rim, 7, closed chamber, 8, inner concave, 9, lateral surface, 10, medial surface, 11, web member, 12, boss, 13, backplate, 14, threaded hole, 15, seal, 16, barrier bed, 17, display screen.
Embodiment
Embodiment 1
As shown in Figure 1, a kind of novel infrared touch panel, comprise light-guiding pillar 1, touch-screen body 2, circuit board 3 and infrared tube 4, described light-guiding pillar 1 is provided with and light-guiding pillar 1 all-in-one-piece cushion cap 5, described cushion cap 5 is between touch-screen body 2 and circuit board 3, and touch-screen body 2 is fixedly connected with cushion cap 5, circuit board 3 is fixedly connected with cushion cap 5, and the infrared tube 4 be fixed on circuit board 3 is positioned at below the light-guiding pillar 1 outside cushion cap 5.
Further, described touch-screen body 2 is parallel with the upper surface of cushion cap 5, and described circuit board 3 is parallel with the lower surface of cushion cap 5.
Infrared tube in the present invention, comprises infrared receiving tube and infrared transmitting tube.Touch-screen body 2 can for bonding with the mode that cushion cap 5 is fixedly connected with, and circuit board 3 and the mode that cushion cap 5 is fixedly connected with can be bonding or bolt connects or bolt is connected with bonding.
Embodiment 2
The present embodiment and above-described embodiment are substantially identical, and the key distinction is:
As shown in Figure 2, in the present embodiment, inside described light-guiding pillar 1, horizontal expansion forms described cushion cap 5, outside vertically extends to form shirt rim 6, circuit board 3 is sealedly and fixedly connected with cushion cap 5 and shirt rim 6 respectively, shirt rim 6, light-guiding pillar 1, cushion cap 5 and circuit board 3 enclose formation one closed chamber 7, and infrared tube 4 is positioned at airtight 7 chambeies.The mode be sealedly and fixedly connected can adopt bonding but be not limited to bonding.
Embodiment 3
The present embodiment and above-described embodiment are substantially identical, and the key distinction is:
As shown in Figure 3, the xsect of described light-guiding pillar becomes the convex shape of inclination, and the bottom indent in the middle part of convex shape, side extends to form cushion cap, and opposite side extends to form vertical shirt rim.Further, place, shirt rim plane and circuit board place plane orthogonal.
Further, the inner concave 8 of described convex shape light-guiding pillar, lateral surface 9, medial surface 10 are the combination of arcwall face and plane.
Such as, described inner concave is arcwall face, lateral surface and medial surface are plane, and the angle in lateral surface and face, cushion cap place is less than 45 ° or be greater than 45 ° and be less than 55 ° for being greater than 39.5 °, and the angle in medial surface and face, cushion cap place is less than 90 ° or be greater than 90 ° and be less than 140 ° for being greater than 64 °.
Embodiment 4
The present embodiment and above-described embodiment are substantially identical, and the key distinction is:
As shown in Figure 4, the inner concave 8 of described convex shape light-guiding pillar, lateral surface 9, medial surface 10 are the combination of arcwall face and plane.
Such as, described inner concave 8 is arcwall face, and lateral surface 9 is arcwall face, and medial surface 10 is plane, and the angle in medial surface 10 and face, cushion cap 5 place is less than 90 ° or be greater than 90 ° and be less than 140 ° for being greater than 64 °.
Embodiment 5
The present embodiment and above-described embodiment are substantially identical, and the key distinction is:
The inner concave 8 of described convex shape light-guiding pillar, lateral surface 9, medial surface 10 are the combination of arcwall face and plane.
Such as, described inner concave 8 is plane, parallel with touch-screen body or at grade, lateral surface 9 is arcwall face, and medial surface 10 is arcwall face.
Embodiment 6
The present embodiment and above-described embodiment are substantially identical, and the key distinction is:
The inner concave 8 of described convex shape light-guiding pillar, lateral surface 9, medial surface 10 are the combination of arcwall face and plane.
Such as, described inner concave is arcwall face, and lateral surface is arcwall face, and medial surface is arcwall face.
Embodiment 7
The present embodiment and above-described embodiment are substantially identical, and the key distinction is:
As shown in Figure 5, the inner concave 8 of described convex shape light-guiding pillar, lateral surface 9, medial surface 10 are the combination of arcwall face and plane.
Such as, described inner concave 8, lateral surface 9 and medial surface 10 are plane, the angle in lateral surface 9 and face, cushion cap 5 place is less than 45 ° or be greater than 45 ° and be less than 55 ° for being greater than 39.5 °, and the angle in medial surface 10 and face, cushion cap 5 place is less than 90 ° or be greater than 90 ° and be less than 140 ° for being greater than 64 °.
Embodiment 8
The present embodiment and above-described embodiment are substantially identical, and the key distinction is:
As shown in Figure 6, described light-guiding pillar 1 is provided with link slot, touch-screen body 2 surrounding is embedded to be arranged in link slot.Touch-screen body 2 surrounding to embed in link slot and bonding, and surrounding, bottom surface is along bonding with cushion cap 5.
Embodiment 9
The present embodiment is further illustrating above-described embodiment 3:
The cross section of light-guiding pillar 1 is roughly in " convex " font tilted, and " convex " font light-guiding pillar side extends to horizontal cushion cap 5, and opposite side extends to vertical shirt rim 6, and lower end, middle part becomes evagination arcwall face optically focused interface; The outboard end of " convex " font light-guiding pillar becomes the reflective interface of clinoplane, the refracting interface of the plane that medial extremity becomes.
Its principle of work is: infrared ray light-guiding pillar is the PMMA material of refractive index 1.488 (with infrared wavelength 0.94nm), optically focused interface is cambered surface, cambered surface focus is at infrared emission unit (or receiving element), the angle in reflective interface and face, cushion cap place is greater than 39.5 ° and is less than 45 ° or be greater than 45 ° and be less than 55 ° of (essence, reflective interface with touch face angle be greater than 39.5 ° be less than 45 ° or be greater than 45 ° and be less than 55 °), when reflective interface and touch-screen angle are 48 degree, refracting interface and touch-screen body angle are 17 degree, and transmitting terminal light-guiding pillar and receiving end light-guiding pillar full symmetric.The infrared light sent at transmitting terminal infrared transmitting tube is after the optically focused of optically focused interface, major part infrared light is converted to directional light vertically upward, and infrared light is vertically upward with 48 degree of incident angles infrared reflecting interfaces, refractive index due to light-guiding pillar is 1.488, the angle of total reflection that can calculate this material according to formula (1.488=sin90/sina) is a=41.5 degree, when infrared light is with 48 degree of incident angles, reflective interface will occur full transmitting, after reflection, infrared light and touch-screen angle approximate 6 degree, infrared light after reflection is to be about the incident refracting interface in 11 degree of angles, by refractive index 1.488 calculate the light after refraction with touch-screen parallel light emergence, at receiving end, the directional light transmitted from transmitting terminal light-guiding pillar incides the infrared light-guiding pillar refracting interface of receiving terminal, is about 11 degree and incides reflective interface after refraction, occurs entirely to launch, and after reflection, infrared light is received by infrared receiving tube after optically focused interface is converged.Utilize the concentrating light principles of convex lens, suitably the distance of adjustment infrared tube and curved surface, the infrared light (similar pointolite) that the emission angle that infrared tube can be sent at transmitting terminal disperses pools less parallel light onwards transmission.Approximately parallel infrared light within the scope of larger angle can be converged again at receiving end, sensing range can be increased and can strengthen again reception infrared signal intensity.Thus be conducive to the loss reducing infrared signal, improve the antijamming capability of infrared touch product, improve the touch precision of infrared touch product, infrared tube emissive power can be reduced again simultaneously, improve the serviceable life of infrared touch product.
Embodiment 10
The present embodiment is further illustrating above-described embodiment 4:
The cross section of light-guiding pillar is roughly in " convex " font tilted, and " convex " font light-guiding pillar side extends to horizontal cushion cap, and opposite side extends to vertical shirt rim, and lower end, middle part becomes the optically focused interface of evagination arcwall face; The outboard end of " convex " font light-guiding pillar becomes the reflective interface of inclination arcwall face, the refracting interface of the plane that medial extremity becomes.
Its principle of work is: light-guiding pillar is the PMMA material of refractive index 1.488 (with infrared wavelength 0.94nm), and optically focused interface 8 is designed to plane or arcwall face, reflective interface is arcwall face, and refracting interface and touch-screen body plane angle are 17 degree.Transmitting terminal light-guiding pillar and receiving end light-guiding pillar full symmetric.The infrared light sent at transmitting terminal infrared transmitting tube is behind optically focused interface, reflect the reflective interface of upwards directs, reflective interface will occur full transmitting, and be focused into directional light because reflective interface curved surface produces, directional light is to reflect rear infrared light and touch-screen angle approximates 6 degree, infrared light after reflection to be about the incident refracting interfaces in 11 degree of angles, by refractive index 1.488 calculate the light after refraction with touch face parallel light emergence; At receiving end, from the incident refracting interface of directional light that transmitting terminal light-guiding pillar transmits, be transmitted through reflecting interface to be about 11 degree of refraction angles, then infrared light occur complete launch and due to reflecting interface be that curved surface produces to focus on and transfers focus to and received by infrared receiving tube at the downward infrared light optically focused interface of infrared receiving tube.When described infrared reflecting interface is curved surface, similar concave mirror.Tool has the following advantages: the infrared light that infrared transmitting tube sends can not ensure that all light is directional light after the optically focused of optically focused interface, or there is the infrared light that a part has certain dispersion angle, utilize optically focused effect (the such as auto lamp of concave mirror, electric torch etc.) infrared light compared with high dispersion angle can be pooled directional light, thus be conducive to the loss reducing infrared signal, improve the antijamming capability of infrared touch product, improve the touch precision of infrared touch product, infrared tube emissive power can be reduced again simultaneously.
Above-mentioned all embodiments, can prevent the loss of infrared signal, suitably the angle of adjustment refracting interface and vertical direction, the infrared light after reflecting can be made again to transmit with the direction being parallel to surface level after refracting interface refraction, can avoid rim effect again simultaneously; Be conducive to the loss reducing infrared signal, improve the antijamming capability of infrared touch product, improve the touch precision of infrared touch product, infrared tube emissive power can be reduced again simultaneously, improve the physical life of infrared touch product; In actual product, touch-screen is fixed on the upper surface of cushion cap, and circuit board is fixed on the lower surface of cushion cap.Touch-screen is fixed on above cushion cap, be conducive to the stable of whole light guide column structure, reduce hoverheight, also touch feeling can be strengthened simultaneously, circuit board is fixed (bonding or screw lock protect) at the lower surface of cushion cap, be conducive to the contraposition of infrared emission and infrared receiving tube, make infrared touch product Installation and Debugging easy, be applicable to producing in enormous quantities.
Embodiment 11
A kind of novel infrared touch panel, comprise light-guiding pillar 1, touch-screen body 2, circuit board 3 and infrared tube 4, described light-guiding pillar 1 is provided with and light-guiding pillar 1 all-in-one-piece cushion cap 5, described cushion cap 5 is between touch-screen body 2 and circuit board 3, and touch-screen body 2 is fixedly connected with cushion cap 5, circuit board 3 is fixedly connected with cushion cap 5.
Further, as shown in Figure 7, described cushion cap 5, circuit board 3 and touch-screen body 2 are tightly connected formation U-shaped cavity, and the opening of this U-shaped cavity to be tightly connected formation closed chamber by web member 11, and infrared tube 4 is positioned at this closed chamber 7.Described web member 11 can be the combination of dustproof foam and fluid sealant.
The preferred implementation of the present embodiment is, described touch-screen body 2 is bonding with the mode of being tightly connected of cushion cap 5, and circuit board 3 is bonding with the mode of being tightly connected of cushion cap 5 or arranges seal and be bolted.
Embodiment 12
The present embodiment is further illustrating embodiment 11.As shown in Figure 8, described light-guiding pillar 1 is provided with link slot, touch-screen body 2 surrounding is embedded to be arranged in link slot, and touch-screen body 2 bottom surface surrounding and cushion cap 5 pass through sealant sealing.
Embodiment 13
As shown in Figure 9, infrared touch panel comprises light-guiding pillar 1, touch-screen body 2, circuit board 3, touch-screen body 2 cross section is inverted " convex " font, touch-surface is formed at " convex " shape touch-screen body 1 top, bottom center section protrudes and forms boss 12, the bottom of touch-screen body 2 both sides is placed on the cushion cap 5 of light-guiding pillar 1, and described circuit board 3 is placed in the cavity formed with touch-screen body lower boss 12 sidewall inside cushion cap 5.Circuit board 3 is bonded in down the lower step place of " convex " shape touch-screen body 2 both sides.
Described infrared touch panel also comprises a backplate 13, and backplate 13 is positioned at the bottom of boss 12 and cushion cap 5 in the middle part of touch-screen body 2, and bonding with the bottom of boss 12 in the middle part of touch-screen body 2 and cushion cap 5.Sheet metal selected by described backplate 13, metal casing is provided with the threaded hole 14 of fixing metal backplate.Can be connected with display screen by threaded hole 14.
Above-mentioned touch-screen body 2, light-guiding pillar 1, backplate 13 surround a relative closed chamber 7, and circuit board 3 is positioned at described closed chamber 7.Above-mentioned touch-screen body 2 is bonded by double glazing or clear plastic and forms entirety.
This structure infrared tube 4 is at touch-screen body ground floor back, can effectively reduce touch-screen integral thickness, simultaneously owing to adopting light-guide device to reach super-thin frame, ultralow frame, and ultralow hoverheight, simultaneously light-guide device and the touch-screen body back side, one installation backplate is set with convenient, the installation of touch-screen and display device (display, all-in-one, panel computer etc.).
Embodiment 14
The present embodiment is substantially the same manner as Example 13, and the key distinction is as follows:
As shown in Figure 10, described backplate 13 is mylar sheet, can effectively reduce touch-screen integral thickness, simultaneously owing to adopting light-guide device to reach super-thin frame, ultralow frame, and ultralow hoverheight.Above-mentioned touch-screen body is formed by a glass or clear plastic cutting.
This structurally waterproof, the effect such as dust-proof is better, simultaneously easily and replacing facilitate the device maintenances such as circuit board and replacing.
Embodiment 15
As shown in figure 11, a kind of infrared touch panel, comprise touch-screen body 2, light-guiding pillar 1, circuit board 3, circuit board 3 is installed with infrared tube 4, the connection bonding with the upper surface of cushion cap 5 of described touch-screen body 2, negator face and the bonding connection in touch-screen body 2 back side of described circuit board 3, and the infrared tube 4 on circuit board 3 is all positioned at inside cushion cap 5.
Or the lower surface of described cushion cap 5 is connected with seal 15, described seal 15, touch-screen body 2 and cushion cap 5 three form closed chamber structure by fluid sealant, and the infrared tube 4 on circuit board 3 and circuit board 3 is all positioned at this closed chamber 7; Seal 15 bonding connection preferred with cushion cap 5, but also can be bolted or bolt is connected with bonding; Described fluid sealant comprises dust-proof glue, marine glue, rubber, silica gel product, preferably uses EVI to steep the flexible entity fitted seal such as silk floss, dust excluder, EPE when sealing.
Further, described seal is preferably L and moulds flitch or sheet metal panel, and L shape one end is fixedly connected with the lower surface of cushion cap, the other end and the bonding connection in the touch-screen body back side, such as, but be not limited to above-mentioned set-up mode, seal also can be the sheet metal etc. of circular arc.
Embodiment 16
Infrared touch panel, comprise touch-screen body 2, light-guiding pillar 1, circuit board 3 containing infrared tube 4, the back side of touch-screen body 2 is fixedly connected with the cushion cap 5 of light-guiding pillar 1, the front of described touch-screen body 2 or the back side are provided with at least one deck barrier bed 16, and described barrier bed 16 is positioned at touch-screen body 2 non-display area.
The preferred implementation of the present embodiment is, described in be arranged on touch-screen body 2 front or the back side barrier bed 16 flush with the frame of the display screen 17 be arranged on below touch-screen body 2.
Further, preferably in the surrounding of described touch-screen body 2, also barrier bed 16 is set equally, coordinates with the barrier bed 16 at touch-screen body 2 front or the back side, to touch-screen body 2 general protection, improve the anti-light interference performance of touch-screen.
The another preferred implementation of the present embodiment is, described barrier bed 16 is the thin slices be made up of adhesive tape, light-shielding sheet, trnaslucent materials, plastic foil or sheet metal, the connection bonding with touch-screen body of described thin slice, but be not limited to aforesaid way, also can adopt other light screening material commonly known in the art.
The another preferred implementation of the present embodiment is, described barrier bed 16 is coated in painting layer on touch-screen body or ink coating.
Further, described barrier bed 16 can be formed by printing silk screen printing process, namely at the region process black needing to block or the dapple pattern of tool etc., can also be formed by corrosion or texture technique, namely at the zonal corrosion needing to block or texture, reach atomized surface effect, to block the metal edge frame of infrared tube and display screen, play shading and landscaping effect.
The another preferred implementation of the present embodiment is, the thickness of described barrier bed 16 is 0.003-2mm.
Described touch-screen body 2 non-display area refers to the region except the screen body corresponding with display screen 17 viewing area.
As shown in Figures 12 and 13, the front of described touch-screen body 2, the back side and surrounding are provided with at least one deck barrier bed 16, wherein, the barrier bed 16 of touch-screen body 2 front and back is preferably manufactured from the same material, but be not limited to above-mentioned set-up mode, such as the barrier bed in touch-screen body front is made up of sheet metal, and the barrier bed at its back side is made up of light-shielding sheet, and front and back barrier bed can be made up of any two material above-mentioned.
Claims (16)
1. an infrared touch panel, comprise light-guiding pillar (1), touch-screen body (2), circuit board (3) and infrared tube (4), it is characterized in that: described light-guiding pillar (1) is provided with and light-guiding pillar (1) all-in-one-piece cushion cap (5), touch-screen body (2) surrounding is fixedly installed on described cushion cap (5); Described light-guiding pillar (1) inner side horizontal expansion forms described cushion cap (5), outside vertically extends to form shirt rim (6), circuit board (3) is sealedly and fixedly connected with cushion cap (5) and shirt rim (6) respectively, shirt rim (6), light-guiding pillar (1), cushion cap (5) and circuit board (3) enclose formation one closed chamber, and infrared tube (4) is positioned at closed chamber; Or described cushion cap (5), circuit board (3) and touch-screen body (2) are tightly connected formation U-shaped cavity, the opening of this U-shaped cavity is tightly connected by web member (11) and forms closed chamber (7), and infrared tube (4) is positioned at this closed chamber (7).
2. infrared touch panel according to claim 1, is characterized in that: described cushion cap (5) is positioned between touch-screen body (2) and circuit board (3), and touch-screen body (2) is fixedly connected with cushion cap (5), and circuit board (3) is fixedly connected with cushion cap (5).
3. infrared touch panel according to claim 1, is characterized in that: the xsect of described light-guiding pillar (1) becomes the convex shape of inclination, and the bottom indent in the middle part of convex shape, side extends to form cushion cap (5), and opposite side extends to form vertical shirt rim (6).
4. infrared touch panel according to claim 3, is characterized in that: the combination that the inner concave (8) of described convex shape light-guiding pillar (1), lateral surface (9), medial surface (10) are arcwall face and plane.
5. infrared touch panel according to claim 4, it is characterized in that: described inner concave (8) is arcwall face, lateral surface (9) and medial surface (10) are plane, the angle in lateral surface (9) and cushion cap (5) face, place is less than 45 ° or be greater than 45 ° and be less than 55 ° for being greater than 39.5 °, and the angle in medial surface (10) and cushion cap (5) face, place is less than 90 ° or be greater than 90 ° and be less than 140 ° for being greater than 64 °.
6. infrared touch panel according to claim 5, is characterized in that: described inner concave is arcwall face, and lateral surface is arcwall face, and medial surface is plane, and the angle in medial surface and face, cushion cap place is less than 90 ° or be greater than 90 ° and be less than 140 ° for being greater than 64 °.
7. infrared touch panel according to claim 4, is characterized in that: described inner concave is plane, parallel with touch-screen body or at grade, lateral surface and medial surface are arcwall face.
8. infrared touch panel according to claim 4, it is characterized in that: described inner concave (8), lateral surface (9) and medial surface (10) are plane, the angle in lateral surface (9) and cushion cap (5) face, place is less than 45 ° or be greater than 45 ° and be less than 55 ° for being greater than 39.5 °, and the angle in medial surface (10) and cushion cap (5) face, place is less than 90 ° or be greater than 90 ° and be less than 140 ° for being greater than 64 °.
9. the infrared touch panel according to any one of claim 1-8, is characterized in that: described touch-screen body (2) is parallel with the upper surface of cushion cap (5), and described circuit board (3) is parallel with the lower surface of cushion cap (5).
10. infrared touch panel according to claim 9, it is characterized in that: described touch-screen body (2) is bonding with the mode of being tightly connected of cushion cap (5), circuit board (3) is bonding with the mode of being tightly connected of cushion cap (5) or arranges seal and be bolted.
11. infrared touch panels according to claim 9, is characterized in that: (1) is provided with link slot to described light-guiding pillar, and touch-screen body (2) surrounding is embedded to be arranged in link slot.
12. infrared touch panels according to claim 1, it is characterized in that: described touch-screen body (2) cross section is inverted " convex " font, body touch-surface is shielded in " convex " shape touch-screen body (2) top formation of falling, bottom center section protrudes and forms boss (12), touch-screen body (2) surrounding is fixedly connected on cushion cap (5), and described circuit board (3) is arranged in the cavity formed with touch-screen body (2) lower boss (12) sidewall inside cushion cap (5).
13. infrared touch panels according to claim 12, is characterized in that: described circuit board (3) is bonded in down the step place of " convex " shape touch-screen body (2) both sides.
14. infrared touch panels according to claim 12 or 13, it is characterized in that: also comprise a backplate (13), described backplate (13) is positioned at the bottom of touch-screen body (2) middle part boss (12) and cushion cap (5), and bonding with touch-screen body (2) middle part boss (12) and the bottom of cushion cap (5), circuit board (3) is arranged in the relative closed chamber (7) that surrounded by touch-screen body (2), cushion cap (5), backplate (13).
15. infrared touch panels according to claim 1, it is characterized in that: described touch-screen body (2) is sealedly and fixedly connected on cushion cap (5), the negator face of circuit board (3) is bonding with touch-screen body (2) back side, and the infrared tube (4) on circuit board (3) is all positioned at cushion cap (5) inner side.
16. infrared touch panels according to any one of claim 1-8,12,13 or 15, it is characterized in that: the front of described touch-screen body (2) or the back side are provided with at least one deck barrier bed (16), and described barrier bed (16) is positioned at touch-screen body (2) non-display area.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210515263.7A CN102968223B (en) | 2012-12-05 | 2012-12-05 | Infrared touch panel |
| PCT/CN2013/000321 WO2014086084A1 (en) | 2012-12-05 | 2013-03-19 | Infrared touch screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210515263.7A CN102968223B (en) | 2012-12-05 | 2012-12-05 | Infrared touch panel |
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| CN102968223A CN102968223A (en) | 2013-03-13 |
| CN102968223B true CN102968223B (en) | 2015-08-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014086084A1 (en) * | 2012-12-05 | 2014-06-12 | 成都吉锐触摸技术股份有限公司 | Infrared touch screen |
| CN106657624B (en) * | 2016-12-06 | 2022-03-25 | Oppo广东移动通信有限公司 | Cover plate and terminal |
| CN107403630A (en) * | 2017-07-21 | 2017-11-28 | 郑州云海信息技术有限公司 | A kind of CD drive connector and solution disc drives connector float high ameliorative way |
| CN107945661B (en) | 2017-11-22 | 2019-11-15 | 维沃移动通信有限公司 | A kind of terminal device |
| CN108040155B (en) * | 2018-02-07 | 2021-01-08 | 维沃移动通信有限公司 | Photosensitive assembly and mobile terminal |
| CN108418911B (en) * | 2018-02-08 | 2020-09-04 | Oppo广东移动通信有限公司 | Electronic device |
| CN108494897B (en) * | 2018-02-08 | 2020-09-04 | Oppo广东移动通信有限公司 | Electronic device |
| CN110806817B (en) * | 2018-08-06 | 2023-06-23 | 深圳市鸿合创新信息技术有限责任公司 | Infrared strip and infrared touch device with same |
| CN216352273U (en) * | 2021-10-08 | 2022-04-19 | 深圳市华胜软件技术有限公司 | Infrared touch screen and display device |
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