CN202372961U - Infrared touch screen capable of changing transmission path of infrared light - Google Patents
Infrared touch screen capable of changing transmission path of infrared light Download PDFInfo
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- CN202372961U CN202372961U CN2012200562984U CN201220056298U CN202372961U CN 202372961 U CN202372961 U CN 202372961U CN 2012200562984 U CN2012200562984 U CN 2012200562984U CN 201220056298 U CN201220056298 U CN 201220056298U CN 202372961 U CN202372961 U CN 202372961U
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Abstract
The utility model discloses an infrared touch screen capable of changing the transmission path of infrared light. The infrared touch screen comprises an infrared emitting unit, an infrared receiving unit, an emitting light guide unit and a receiving light guide unit, wherein the infrared emitting unit and the infrared receiving unit are arranged on a non-contact surface of a touch screen body; the emitting light guide unit is used for changing direction of infrared light emitted by the infrared emitting unit and then transmitting the infrared light to a contact surface to form an infrared light network; and the receiving light guide unit is used for changing direction of the infrared light network and then transmitting the infrared light network to the infrared receiving unit. Due to adoption of the infrared touch screen disclosed by the utility model, the suspension height problem commonly existing in the traditional infrared touch screen can be effectively reduced, the infrared touch screen is basically not influenced by external light, the light interference resistance problem of the traditional infrared touch display screen can be effectively solved; meanwhile, the raised edge height and width of the traditional infrared touch screen can be effectively reduced.
Description
Technical field
The utility model relates to a kind of infrared touch panel, relates in particular to a kind of infrared touch panel that changes the infrared light transmission path.
Background technology
Existing infrared touch system; It adopts mode all is through by being installed in X, Y direction arrange uniform infrared transmitting tube and infrared receiving tube around along the touch area; Control and driving circuit drive infrared transmitting tube and infrared receiving tube under the control of MCU run time version, the infrared ray matrix that corresponding scanning formation directions X and Y direction are intersected anyhow.When touching, finger or other object will block the infrared ray anyhow through this point, judge the position of touch point on touch-screen by control system.
At present in the infrared touch panel field, be 200820109789.4 " a kind of catoptron that is applied on the touch-screen " like the patent No., this invention fundamental purpose is: utilize principle of reflection will, the element number that transmits and receives that reduces on the infrared touch panel reduces by half; The cardinal principle that like the patent No. is " a kind of multi-point touch panel of pure flat structure " this invention of 201020271758.6 is: on the basis of common infrared touch panel, increased a LGP; Be used to fill the cavity on the common touch-screen body touch face, seem pure flat effect thereby reach the surface; Like 200710028616.X " a kind of infrared touch panel and multi-point touch locating method thereof " etc.No matter in existing infrared touch panel patented technology or the product is single-point or multiple spot infrared touch panel, and the basic assembling mode of its infrared touch panel all is that infrared tube is put on the touch face of touch-screen, in this structure, all has the problem of following three aspects:
1, the touch hoverheight is higher.Owing to the infrared light directive infrared receiving tube that sends from infrared transmitting tube; Its infrared light mainly concentrates on the middle part of pipe, and when the touch body did not also touch the glass surface of touch-screen, in fact infrared light was blocked; This is to touch to respond; This phenomenon is called the touch hoverheight in this area, this problem can influence touch feeling, and is easy to generate misoperation; Hope all that generally this value is more little good more, but infrared touch panel body now on the market there is all generally 2-5mm to touch hoverheight.
2, anti-high light interference capability is poor.Existing infrared touch panel; Because infrared tube is to be placed on the touch face; Light from outside is easy to be mapped to infrared receiver, thereby influences the operate as normal of touch-screen, and therefore general screen body all can not be in operate as normal under the high light (like sunlight or stronger incandescent lamp).
3, four limits of infrared touch panel touch face all exist broad and higher edge convexity.In existing infrared touch panel field; Infrared tube generally all is installed in the top that the screen body touches face; Add infrared tube protection thickness of structure, thereby become higher edge protruding, to the installation and the very big restriction of touch apparatus appearance design generation of touch-screen with broad at the quadrilateral of screen body.
The utility model content
The purpose of the utility model is to overcome the problems referred to above that existing infrared touch panel exists; A kind of infrared touch panel that changes the infrared light transmission path is provided; After adopting the utility model, can effectively reduce ubiquitous hoverheight problem in the traditional infrared touch-screen, can not influenced by light from outside; The anti-light interference problem of traditional infrared touch-screen can be effectively solved, protruding edge height and the width of existing infrared touch panel can be effectively reduced simultaneously.
For realizing above-mentioned purpose, the technical scheme that the utility model adopts is following:
A kind of infrared touch panel that changes the infrared light transmission path; Comprise infrared emission unit and infrared receiver; It is characterized in that: said infrared emission unit and infrared receiver are arranged on the non-touch face of touch-screen body; And also comprise after the infrared light that is used for that infrared emission unit is sent changes direction being transferred to the emission light element that touch face forms the infrared ray net, be used for the reception light element that is transferred to infrared receiver after the infrared ray net change direction.
Said emission light element can be the combination of leaded light post, reflective mirror or leaded light post and reflective mirror with the reception light element.
When said emission light element was the leaded light post with the reception light element, the emission light element was the internal reflection structure with receiving light element.
When said emission light element was reflective mirror with the reception light element, the emission light element was the surface reflection structure with receiving light element.
Said emission light element is the leaded light post, and when the reception light element was reflective mirror, the emission light element was the internal reflection structure, and receiving light element is the surface reflection structure.
Said emission light element is a reflective mirror, and when the reception light element was the leaded light post, the emission light element was the surface reflection structure, and receiving light element is the internal reflection structure.
Said screen is touched the back side and the side that the non-touch face of screen body comprises the touch-screen body, and infrared emission unit and infrared receiver are arranged on the back side or the side of touch-screen body.
Said screen is touched the back side and the side that the non-touch face of screen body comprises the touch-screen body, and infrared emission unit and infrared receiver are arranged on the back side and the side of touch-screen body.
Said emission light element is symmetricly set on touch-screen body both sides with the reception light element.
Said infrared emission unit comprises X axle infrared emission unit and Y axle infrared emission unit; Be connected to processing unit MCU after X axle infrared emission unit and the parallel connection of Y axle infrared emission unit; Infrared receiver comprises X axle infrared receiver and Y axle infrared receiver, is connected to processing unit MCU after X axle infrared receiver and the parallel connection of Y axle infrared receiver.
Adopt the advantage of the utility model to be:
One, behind employing the utility model; The IR that the infrared emission unit of infrared touch panel sends is adjusted to IR behind the emission light element and is shielded body and touch the face surface and transmit near zero elevation; And there is certain height difference in traditional infrared touch-screen IR with screen body touch face surface, thereby has reduced the hoverheight of traditional infrared touch-screen.
Two, in the utility model, because infrared tube can be embedded into touch-screen body bottom, so light from outside is difficult to have influence on infrared receiver, thereby promoted the anti-light interference performance of traditional infrared touch-screen.
Three, behind employing the utility model; Reduced the protruding height and the width of frame of traditional infrared touch-screen; Can accomplish ultralow ultra narrow frame, improve the aesthetics of screen body, promote the touch display assembling capacity; Overcome the traditional infrared touch-screen because infrared tube is placed in touch-screen body upper surface, the protruding wide problem of edge Tai Gaotai.
Four, in the utility model; When said emission light element is the leaded light post with the reception light element; The emission light element is the internal reflection structure with receiving light element, and repeatedly the control to useful signal is convenient in reflection and transmission; Can effectively control ambient light it is disturbed, improve touch quality.
Five, in the utility model; When said emission light element is reflective mirror with the reception light element; The emission light element is the surface reflection structure with receiving light element; The infrared ray that places touch-screen body bottom is effectively reflexed on the touching medium through the emission light element, improved accuracy of identification.
Six, in the utility model, said emission light element is the leaded light post, when the reception light element is reflective mirror; The emission light element is the internal reflection structure; Receiving light element is the surface reflection structure, has guaranteed that infrared light all transmits in the emission light element, has improved light guide effect.
Seven, in the utility model; Said screen is touched the back side and the side that screen body non-touch face comprises the touch-screen body, and infrared emission unit and infrared receiver are arranged on the back side of touch-screen body or/and the side, and the mode of the transmission of angle of change infrared light is various; Be convenient to shield the assembling of body; The frame that has guaranteed the touch-screen body becomes low narrow frame, and applied range adopts this structure further to reduce the seal ring thickness of traditional infrared touch-screen.
Eight, in the utility model, said emission light element can be the combination of leaded light post, reflective mirror or leaded light post and reflective mirror with the reception light element, can carry out composite design according to actual needs, uses more versatile and flexible.
Nine, in the utility model, said emission light element is symmetricly set on touch-screen body both sides with the reception light element, adopts this mode not only to reduce seal ring thickness, and has guaranteed the aesthetic property of outward appearance.
Description of drawings
Fig. 1 is embodiment 1 synoptic diagram of the utility model;
Fig. 2 is embodiment 2 synoptic diagram of the utility model;
Fig. 3 is embodiment 3 synoptic diagram of the utility model;
Fig. 4 is embodiment 4 synoptic diagram of the utility model;
Fig. 5 connects block diagram for the utility model system
Be labeled as among the figure: 1, infrared emission unit, 2, infrared receiver, 3, the emission light element, 4, receive light element, 5, touch body, 6, touch face, 7, the back side, 8, the side.
Embodiment
Present embodiment utilizes the leaded light post of prismatic structure to implement the leaded light transmission.As shown in Figure 1, infrared emission unit 1 is an infrared transmitting tube, and infrared receiver 2 is an infrared receiving tube.After the infrared light that infrared transmitting tube sends is injected emission light element 3 perpendicular to the plane of incidence of emission light element 3; Arrive first light guiding surface of emission light element; As long as the angle of this light guiding surface and surface level is arranged on 45 °, (light is 42.8 from the critical angle that acrylic material or glass material incide air to its infrared ray greater than the cirtical angle of total reflection of its leaded light material in the incident angle of its light guiding surface; Light is 39 from the critical angle that the PC material incides air; ); Just can make this moment IR form total reflection at first light guiding surface of emission light element 3 in leaded light post internal transmission; Infrared ray will all reflex on second reflecting surface of emission light element; Angle with this second prismatic face and surface level is arranged on 45 ° equally, and infrared light continues to be transferred to reception light element 4 after total reflection is transferred to touch face 6 formation infrared ray nets once more on this face; Its infrared light is transferred to infrared receiving tube through same leaded light mode and is received, and forms a complete emission and receives system.
When touch body 5 touches the touch-screen body; The ultrared transmission path that penetrates from emission light element 3 will be stopped; The infrared signal intensity that infrared receiver 2 receives will weaken, and controller just can confirm to touch the coordinate position of body through the variation of analytic signal.Thereby reach touching the effect of body location.
Present embodiment utilizes the leaded light post of column construction to implement the leaded light transmission.As shown in Figure 2; After the infrared light that infrared transmitting tube sends is injected emission light element 3 perpendicular to the plane of incidence surface of emission light element 3; Launch the radius of the arcwall face of light element 3 through adjustment; Make the critical angle (light from critical angle that plastic material incide air be 42.8, the angle on arcwall face and plane be meant the tangent line of arcwall face and the angle on plane) of the incident angle of the infrared light of injecting emission light element 3 arcwall faces greater than total reflection, this moment, infrared light can form total reflection in emission light element 3 inside; Infrared ray is launched light element 3 through penetrating after the total reflection repeatedly in emission light element 3; And the touch face of being transferred to formation infrared ray net, receiving light element 4 process the same manners transmission backs, form a complete emission and receive system by infrared receiver 2 receptions.
When touch body 5 touches the screen body; The ultrared transmission path that penetrates from emission light element 3 will be stopped; Infrared receiver 2 receives that infrared signal intensity will weaken, and controller just can confirm to touch the coordinate position of body through the variation of analytic signal.Thereby reach touching the effect of body location.
Present embodiment utilizes reflective light guide structure to implement leaded light transmission, for example reflective mirror.As shown in Figure 3; The infrared light that infrared emission unit 1 sends is parallel to horizontal direction directive emission light element 3; As long as first reflecting surface of assurance emission light element 3 and the angle of second reflecting surface and surface level are at 45 °, infrared signal can be to launch second reflecting surface of light element 3 after the reflection of first reflecting surface perpendicular to the direction directive of surface level at this moment; Once more after the reflection; Light will be transferred to infrared receiver 2 in the same way through reception light element 4 again and is received after will being transferred to touch face formation infrared ray net, accomplish a complete emission and receive system.
When touch body 5 touched the screen body, the ultrared transmission path that penetrates from emission light element 3 will be stopped that receiving end receives that infrared signal intensity will weaken, and controller just can confirm to touch the coordinate position of body through the variation of analytic signal.Thereby reach touching the effect of body location.
Instance 4
Present embodiment is the side-mounted light guide structure of infrared tube; As shown in Figure 4, after the infrared light that infrared emission unit 1 sends is directly injected the emission light element 3 of transmitting terminal, after the reflecting surface reflection of this infrared signal through emission light element 3; Its light transmission forms the infrared ray net to touch face; Be transferred to again and receive light element 4,, form a complete emission and receive system receiving reverse in an identical manner transmission back, light element 4 places by infrared receiver 2 receptions.This structure infrared tube can reduce to shield the thickness of body at the touch-screen body side surface.
When touch body 5 touches the screen body; The ultrared transmission path that penetrates from emission light element 3 will be stopped on touch face; Receiving end receives that infrared signal intensity will weaken, and controller just can confirm to touch the coordinate position of body through the variation of analytic signal.Thereby reach touching the effect of body location.
A kind of infrared touch panel that changes the infrared light transmission path; Comprise infrared emission unit 1 and infrared receiver 2; Said infrared emission unit 1 and infrared receiver 2 are arranged on the non-touch face of touch-screen body; And also comprise after the infrared light that is used for that infrared emission unit 1 is sent changes direction being transferred to the emission light element 3 that touch face 6 forms the infrared ray net, be used for the reception light element 4 that is transferred to infrared receiver 2 after the infrared ray net change direction.
The preferred implementation of the utility model is that said emission light element 3 can be the combination of leaded light post, reflective mirror or leaded light post and reflective mirror with reception light element 4, but is not limited thereto, and also can be other objects that can change the transmission direction of light.
In the utility model, when said emission light element 3 was the leaded light post with reception light element 4, emission light element 3 was the internal reflection structure with reception light element 4.
When said emission light element 3 was reflective mirror with reception light element 4, emission light element 3 was the surface reflection structure with reception light element 4.
When said emission light element 3 is the leaded light post, when reception light element 4 is reflective mirror, launches light element 3 and be the internal reflection structure, receive light element 4 and be the surface reflection structure.
When said emission light element 3 is a reflective mirror, when reception light element 4 is the leaded light post, launches light element 3 and be the surface reflection structure, receive light element 4 and be the internal reflection structure.
The internal reflection structure is meant: infrared light that infrared emission unit (1) sends get into emission light element (3) within it portion be transferred to touch face (6) after changing the light transmission direction through reflection way, get into receive light element (4) infrared light within it portion be transferred to the infrared receiver (2) that is positioned at the non-touch face of touch-screen body after changing the light transmission direction through reflection way.Reflection configuration in the utility model, give an example, also have a lot, be not limited to cited mode.
The surface reflection structure is meant: the infrared light that infrared emission unit sends; Get into and to be transferred to touch face (6) after the mode of emission light element (3) through surface reflection changes the light transmission direction, get into and be transferred to the infrared receiver (2) that is positioned at the non-touch face of touch-screen body after the infrared light that receives light element (4) mode through surface reflection changes the light transmission direction.The surface reflection structure in the utility model, give an example, also have a lot, be not limited to cited mode.
In the utility model, said screen is touched the back side 7 and side 8 that the non-touch face of screen body comprises the touch-screen body, and infrared emission unit 1 and infrared receiver 2 are arranged on the back side 7 or the side 8 of touch-screen body, for example all are arranged on the back side 7, or all are arranged on side 8.
Perhaps said screen is touched the back side 7 and side 8 that the non-touch face of screen body comprises the touch-screen body, and infrared emission unit 1 and infrared receiver 2 are arranged on the back side 7 and side 8 of touch-screen body, and for example one is arranged on the back side 7, and another is arranged on side 8.
The another preferred implementation of the utility model is that said emission light element 3 is symmetricly set on touch-screen body both sides with reception light element 4.
Described leaded light post can change the transparent or semitransparent object of the definite shape of light transmission direction for utilizing total reflection principle, and it is preferred forms that the leaded light post adopts total reflection, but is not limited to total reflection.The lens that described catoptron scribbles reflective material object or utilizes total reflection principle to be designed to for the surface.
In the utility model; When adopting the leaded light post; Like the leaded light rod structure among Fig. 1; Can comprise first transport part, first reflecting part, second transport part, second reflecting part and the 3rd transport part, the infrared light that infrared emission unit sends is transferred to touch face through first transport part, first reflecting part, second transport part, second reflecting part and the 3rd transport part of emission light element successively.When adopting this structure, the infrared light that said infrared emission unit sends forms total reflection at first reflecting part and second reflecting part of emission light element.First transport part of the infrared light that said infrared emission unit sends and emission light element to inject face vertical; First reflecting part and second reflecting part are 42.8-45 ° with the angle of the face of touch, and the infrared light of transmission is vertical with the infrared light of transmission in the 3rd transport part with first transport part in second transport part.The material of leaded light post and structure have a lot, are not limited thereto mode, in the leaded light post, form total reflection as long as can guarantee infrared light.
As shown in Figure 5; Said infrared emission unit 1 comprises X axle infrared emission unit and Y axle infrared emission unit; Be connected to processing unit MCU after X axle infrared emission unit and the parallel connection of Y axle infrared emission unit; Infrared receiver 2 comprises X axle infrared receiver and Y axle infrared receiver, is connected to processing unit MCU after X axle infrared receiver and the parallel connection of Y axle infrared receiver.
The principle of work of the utility model is: be positioned at the infrared light that the infrared emission unit of the non-touch face of touch-screen body sends; Form the infrared ray net through being transferred to touch face after the emission light element change light transmission direction, be transferred to the infrared receiver that is positioned at the non-touch face of touch-screen body through receiving light element again; When touching the body touch, the infrared ray of transmission is stopped that on touch face processing unit MCU confirms to touch the coordinate position of body through infrared receiver being received the situation of change of light signal strength.
Concrete processing procedure is: behind the system initialization, start the infrared emission unit and the infrared receiver of X, Y axle, X, Y axle are carried out infrared scan; Each scanning element touches analysis to received signal, if any touch, then produces the touching position information of X, Y respectively; System processing unit MCU judges whether effective touching position information of scanning element, when not having effective touching position information, returns initialization; When effective touching position information, system processing unit MCU collects effective touch position data of X, Y axle scanning element, is the positional information of true touch point; System processing unit MCU judges whether that the touch point positional information that satisfies condition produces, and returns initialization, when sometimes when not having; Each the touch point coordinates transmission that draws in computer system, is returned initialization then.
The infrared emission unit 1 of infrared touch panel is put in the non-touch face of touch-screen body with infrared receiver 2, thereby reaches the no frame or the effect of little frame.Form the infrared ray nets and will reach the infrared light that this purpose must send the infrared emission unit 1 that is put in the touch-screen side 8 or the back side 7 through the touch face 6 that leaded light or reflection way are directed to the touch-screen body, again on other one side of touch-screen body through same mode with infrared guldance to the infrared receiver 2 at its side 8 or the back side 7.
And the key that will reach above purpose is how the transmission direction of infrared light to be changed, and technical scheme comprises:
1, uses the leaded light post to utilize total reflection principle from the side or the back side is directed to touch face, adopt the side or the back side that is directed to the touch-screen body in a like fashion from touch face again light;
2, use reflective mirror or reflective mirror group from the side or the back side is directed to touch face with light; Adopt the side or the back side that is directed to touch-screen in a like fashion from touch face again;
3, can adopt the array mode of above dual mode, Yi Bian use reflective mode, Yi Bian with leaded light post mode;
In the utility model, the mode that changes the infrared light transmission path has a lot, is not limited to aforesaid way, and wherein catoptron comprises the catoptron and the catoptron that utilizes total reflection principle of spraying reflection material.
The utility model is that the infrared receiver of infrared touch panel and infrared emission unit are installed in the back side or the side of shielding body; Through light guide structure with infrared ray from the screen body of touch screen back side or the side be transferred to the screen body of touch screen front; Thereby above screen body touch face, constitute infrared array, the infrared touch panel of recognizing touch operation body position.The infrared touch panel of the utility model both can reduce the hoverheight of touch-screen, can reach the filtering ambient light again and disturb, and had realized low narrow frame simultaneously.
Claims (9)
1. infrared touch panel that changes the infrared light transmission path; Comprise infrared emission unit (1) and infrared receiver (2); It is characterized in that: said infrared emission unit (1) and infrared receiver (2) are arranged on the non-touch face of touch-screen body; And also comprise after the infrared light that is used for that infrared emission unit (1) is sent changes direction being transferred to the emission light element (3) that touch face (6) forms the infrared ray net, be used for the reception light element (4) that is transferred to infrared receiver (2) after the infrared ray net change direction; Said emission light element (3) and reception light element (4) are the combination of leaded light post, reflective mirror or leaded light post and reflective mirror.
2. the infrared touch panel of change infrared light transmission path according to claim 1; It is characterized in that: when said emission light element (3) and reception light element (4) were the leaded light post, emission light element (3) and reception light element (4) were the internal reflection structure.
3. the infrared touch panel of change infrared light transmission path according to claim 1; It is characterized in that: said emission light element (3) and reception light element (4) are when being reflective mirror, and emission light element (3) and reception light element (4) are the surface reflection structure.
4. the infrared touch panel of change infrared light transmission path according to claim 1; It is characterized in that: said emission light element (3) is the leaded light post; When reception light element (4) is reflective mirror; Emission light element (3) is the internal reflection structure, and receiving light element (4) is the surface reflection structure.
5. the infrared touch panel of change infrared light transmission path according to claim 1; It is characterized in that: said emission light element (3) is a reflective mirror; When reception light element (4) is the leaded light post; Emission light element (3) is the surface reflection structure, and receiving light element (4) is the internal reflection structure.
6. the infrared touch panel of change infrared light transmission path according to claim 1; It is characterized in that: said screen is touched the back side (7) and side (8) that the non-touch face of screen body comprises the touch-screen body, and infrared emission unit (1) and infrared receiver (2) are arranged on the back side (7) or side (8) of touch-screen body.
7. according to the infrared touch panel of arbitrary described change infrared light transmission path in the claim 1-6; It is characterized in that: said screen is touched the back side (7) and side (8) that the non-touch face of screen body comprises the touch-screen body, and infrared emission unit (1) and infrared receiver (2) are arranged on the back side (7) and side (8) of touch-screen body.
8. according to the infrared touch panel of arbitrary described change infrared light transmission path in the claim 1-6, it is characterized in that: said emission light element (3) and reception light element (4) are symmetricly set on touch-screen body both sides.
9. according to the infrared touch panel of arbitrary described change infrared light transmission path in the claim 1-6; It is characterized in that: said infrared emission unit (1) comprises X axle infrared emission unit and Y axle infrared emission unit; Be connected to processing unit MCU after X axle infrared emission unit and the parallel connection of Y axle infrared emission unit; Infrared receiver (2) comprises X axle infrared receiver and Y axle infrared receiver, is connected to processing unit MCU after X axle infrared receiver and the parallel connection of Y axle infrared receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200562984U CN202372961U (en) | 2012-02-21 | 2012-02-21 | Infrared touch screen capable of changing transmission path of infrared light |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200562984U CN202372961U (en) | 2012-02-21 | 2012-02-21 | Infrared touch screen capable of changing transmission path of infrared light |
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| CN202372961U true CN202372961U (en) | 2012-08-08 |
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| CN2012200562984U Ceased CN202372961U (en) | 2012-02-21 | 2012-02-21 | Infrared touch screen capable of changing transmission path of infrared light |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459815A (en) * | 2013-09-13 | 2015-03-25 | 深圳达实信息技术有限公司 | Infrared radial device and channel gate |
| CN106324848A (en) * | 2016-10-31 | 2017-01-11 | 昆山国显光电有限公司 | Display panel and method thereof for realizing floating touch and naked eye 3D |
| CN112631466A (en) * | 2020-12-31 | 2021-04-09 | 安徽鸿程光电有限公司 | Infrared touch screen and infrared touch positioning method |
-
2012
- 2012-02-21 CN CN2012200562984U patent/CN202372961U/en not_active Ceased
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459815A (en) * | 2013-09-13 | 2015-03-25 | 深圳达实信息技术有限公司 | Infrared radial device and channel gate |
| CN106324848A (en) * | 2016-10-31 | 2017-01-11 | 昆山国显光电有限公司 | Display panel and method thereof for realizing floating touch and naked eye 3D |
| CN106324848B (en) * | 2016-10-31 | 2019-08-23 | 昆山国显光电有限公司 | Display panel and its method for realizing suspension touch control and naked eye 3D |
| CN112631466A (en) * | 2020-12-31 | 2021-04-09 | 安徽鸿程光电有限公司 | Infrared touch screen and infrared touch positioning method |
| CN112631466B (en) * | 2020-12-31 | 2023-12-19 | 安徽鸿程光电有限公司 | Infrared touch screen and infrared touch positioning method |
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