CN203606815U - Infrared touch screen - Google Patents
Infrared touch screen Download PDFInfo
- Publication number
- CN203606815U CN203606815U CN201320782122.1U CN201320782122U CN203606815U CN 203606815 U CN203606815 U CN 203606815U CN 201320782122 U CN201320782122 U CN 201320782122U CN 203606815 U CN203606815 U CN 203606815U
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- infrared
- light guide
- lamp
- display screen
- touch panel
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Abstract
The utility model relates to the technical field of touch screens, in particular to an infrared touch screen which comprises a face shell, an infrared lamp panel and a display screen arranged above the infrared lamp panel. The infrared lamp panel is provided with a plurality of infrared emitting lamps and a plurality of infrared receiving lamps. The infrared emitting lamps and the infrared receiving lamps are opposite. A lower light guide piece which is used for perpendicularly and upwards reflecting infrared rays emitted by the infrared emitting lamps on one side of the infrared lamp panel is arranged under the display screen. An annular upper light guide piece which is used for reflecting infrared rays to the other side and then perpendicularly and downwards reflecting the infrared rays to the infrared receiving lamps on the other side of the infrared lamp panel is arranged above the display screen, wherein the infrared rays are perpendicularly emitted into the annular upper light guide piece. According to the infrared touch screen, the infrared emitting lamps and the infrared receiving lamps are arranged on the back face of the display screen, and through cooperation of the lower light guide piece and the upper light guide piece, the infrared rays are reflected to the upper surface of the display screen, the infrared touch screen can be applied to electronic products smaller than 10 inches, the display screen can be directly attached to the touch screen, and the frame of the overall infrared touch screen is small.
Description
Technical field
The utility model relates to the technical field of touch-screen, relates in particular to infrared touch panel.
Background technology
Infrared touch panel is as a kind of medium of touching technique, its housing is provided with infrared emitting lamp and infrared receiver lamp, on the surface of display screen, formed infra-red detection net by infrared emitting lamp, any touch object can change the infrared ray of display screen upper contact, the ultrared power that the infrared receiver lamp of the both direction anyhow on this contact is received can change, like this, calculate the touch location of contact according to transverse axis and vertical pivot, and then realize touch screen operation.
The development course of above-mentioned infrared touch panel is as follows:
First generation infrared touch panel comes across 1992, and resolution only has 32 × 32, and its resolution is low, be subject to environmental interference and misoperation, and requires to use in certain shading environment; Second generation infrared touch panel was released in 1994, and resolution reaches 64 × 64, has improved anti-smooth jamming performance, can adapt to most of indoor environments; Third generation infrared touch panel was released in 1997, and resolution reaches 320 × 240, can in the environment of outdoor non-direct sunlight, use; The 4th generation infrared touch panel main contributions be to have improved resolution, reached 800 × 600, in 1998 years release.
From above-mentioned four generation infrared touch panel development course, it is mainly progressive along improving resolution and two aspects of intense laser interfere adaptive capacity to environment being carried out, but there is no overcome that life of product is short, the easily problem such as drift of component characteristic parameter.
The 5th generation infrared touch panel, it has not only brought up to 1000 × 720 by resolution, its anti-intense laser interfere performance also improves greatly, can arrive sun direct projection environment use, the more important thing is there is being this qualitative leap aspect life of product and maintenance-free performance; The 6th generation infrared touch panel supported multiple point touching for adapting to.
Infrared touch panel of the prior art, because infrared ray lamp plate is placed on the front of display screen, like this, infrared emitting lamp on infrared ray lamp plate and the direct correlation of infrared receiver lamp, to form infra-red detection net, due to precision, algorithm, and the reason such as leaded light component itself, make this infrared touch technology can not apply 10 cun of following electronic products, as 10 cun of following mobile phone or panel computers etc., make the scope of application of infrared touch technology little, be difficult to practical requirement, and display screen can not be fitted, the frame of complete machine is wider and thick.
Utility model content
The purpose of this utility model is to provide infrared touch panel, be intended to solve in infrared touch panel of the prior art, infrared ray lamp plate is placed on the front of display screen, so that this infrared touch panel is difficult to apply in 10 cun of following electronic products, display screen is difficult to laminating and the thicker problem of complete machine frame.
The utility model is to realize like this, infrared touch panel, comprise face-piece, infrared ray lamp plate and display screen, in described face-piece, there is the cavity volume of upper end open, described infrared ray lamp plate and display screen are sequentially placed in respectively described cavity volume, and described infrared ray lamp plate is positioned at the lower rear of described display screen;
Described infrared ray lamp plate is provided with multiple infrared emitting lamps and multiple infrared receiver lamp, described infrared emitting lamp and described infrared receiver lamp positioned opposite, and be around shape and arrange;
Described display screen below is provided with the lower light guide that infrared ray that the infrared emitting lamp in described infrared ray lamp plate one side is sent reflects vertically upward, described lower light guide in the form of a ring, be placed on described infrared ray lamp plate, and be placed in the outside of described infrared emitting lamp and infrared receiver lamp;
Described display screen top is provided with in the form of a ring and infrared ray reflected in parallel to its opposite side of vertically injecting in it is also then reflexed to the upper light guide in the infrared receiver lamp on infrared ray lamp plate opposite side vertically downward.
Further, multiple described infrared emitting lamps are row's shape and arrange, form infrared emitting lamp bank, multiple described infrared receiver lamps are row's shape and arrange, form the infrared receiver lamp bank with described infrared emitting lamp bank positioned opposite, described infrared ray lamp plate be provided with two described in infrared receiver lamp bank described in infrared emitting lamp bank and two, described in two, described in infrared emitting lamp bank and two, infrared receiver lamp bank is around shape and arranges.
Further, described infrared emitting lamp and infrared receiver lamp are right against respectively the sidewall layout of described lower light guide.
Further, the lateral wall of described upper light guide and the lateral wall of lower light guide are respectively skewed, and angle of inclination is 45 °.
Further, the opening part of the cavity volume of described face-piece is provided with face-piece decoration in the form of a ring, described face-piece decoration, upper light guide, display screen, lower light guide and infrared ray lamp plate butt sequentially from top to bottom.
Further, the lower surface of described lower cover is extended with multiple connection straps that are placed in described cavity volume down, and described connection strap is connected in the madial wall of described cavity volume.
Further, in described face-piece decoration, be provided with multiple through holes, in described through hole, be equipped with securing member, described securing member is connected in described face-piece.
Further, described infrared ray lamp plate comprises wiring board, and described infrared emitting lamp and infrared receiver lamp are located on described wiring board, and the bottom of described cavity volume is provided with multiple grooves, multiple described grooves are arranged around described wiring board, and are blocked the lateral wall of described wiring board.
Further, the back side of described wiring board is provided with infrared scan chip, and the bottom of described cavity volume is provided with avoiding hollow groove, and described infrared scan chip is placed in described avoiding hollow groove.
Compared with prior art, infrared touch panel in the utility model, it does not use the mode of the direct correlation of infrared ray, infrared emitting lamp and infrared receiver lamp are positioned to the back side of display screen, by the cooperation of lower light guide and upper light guide, make infrared refraction to the upper surface of display screen, form infra-red detection net.Therefore, it can be applied in 10 cun of following electronic products, applied widely, can be satisfied with various actual demands, and display screen can directly be fitted; Infrared ray lamp plate, lower light guide display screen and upper light guide sequentially butt are fixed, and avoid arranging frame fixed sturcture, make the frame of complete machine less, and thinner.
Accompanying drawing explanation
Fig. 1 is the three-dimensional exploded perspective view of the infrared touch panel that provides of the utility model embodiment;
Fig. 2 is the schematic perspective view of the infrared ray lamp plate that provides of the utility model embodiment;
Fig. 3 is that the master of the face-piece that provides of the utility model embodiment looks schematic diagram;
Fig. 4 is that the master of the infrared touch panel that provides of the utility model embodiment looks schematic diagram;
Fig. 5 is the part cut-away illustration of the infrared touch panel that provides of the utility model embodiment;
Fig. 6 is the A place enlarged diagram in Fig. 1;
Fig. 7 is the infrared reflection principle schematic of the infrared touch panel that provides of the utility model embodiment;
Fig. 8 is the touch principle schematic of the infrared touch panel that provides of the utility model embodiment;
Fig. 9 is the principle of work schematic diagram of the infrared touch panel that provides of the utility model embodiment;
Figure 10 is the schematic perspective view of the infrared touch panel that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Below in conjunction with specific embodiment, realization of the present utility model is described in detail.
As shown in Fig. 1～10, the preferred embodiment providing for the utility model.
The infrared touch panel 1 that the present embodiment provides comprises face-piece 15, upper light guide 12, lower light guide 14, display screen 13 and infrared ray lamp plate 16, wherein, in face-piece 15, there is the cavity volume 151 of upper end open, infrared ray lamp plate 16, lower light guide 14 display screens 13 and upper light guide 12 are sequentially placed in the cavity volume 151 of face-piece 15, and be sequentially stacking from bottom to top, namely infrared ray lamp plate 16 is placed on the below at the back side of display screen 13, and its infrared lamp is positioned at the below at display screen 13 back sides.
Infrared ray lamp plate 16 is provided with multiple infrared emitting lamps 163 and multiple infrared receiver lamp 164, multiple infrared emitting lamps 163 are on the infrared ray lamp plate 16 of arranging around shape with multiple infrared receiver lamps 164, and infrared emitting lamp 163 and infrared receiver lamp 164 positioned opposite.
Above-mentioned lower light guide 14 in the form of a ring, be arranged on infrared ray lamp plate 16, and be positioned at the below of display screen 13, its periphery is placed in the inner side of infrared emitting lamp 163 and infrared receiver lamp 164, in the supreme light guide 12 of infrared ray vertical reflection that it can send the infrared emitting lamp 163 in infrared light board one side.
As shown in Figure 7, for the principle of work schematic diagram of the present embodiment middle infrared (Mid-IR) touch-screen 1, after the infrared ray that the infrared emitting lamp 163 of infrared ray lamp plate 16 1 sides sends is reflexed in upper light guide 12 vertically upward, by a side reflected in parallel of upper light guide 12 to its opposite side, and reflex to vertically downward in the infrared receiver lamp 164 on infrared ray lamp plate 16 opposite sides, like this, on the upper surface of display screen 13, form infra-red detection net, the upper surface of any touch object touch display screen 13, can change the infrared ray of display screen 13 upper contacts, the infrared receiver lamp 164 of relevant position can not receive infrared ray, thereby can have more transverse axis and vertical pivot and determine the position of contact, realize and touch operating effect.
The infrared touch panel 1 that the present embodiment provides, infrared ray lamp plate 16 is positioned on the back side of display screen 13, infrared emitting lamp 163 and infrared receiver lamp 164 are positioned at the back side of display screen 13, and by the cooperation of lower light guide 14 and upper light guide 12, make infrared refraction to the upper surface of display screen 13, form infra-red detection net, must not use the direct correlation of infrared ray, therefore, it can be applied in 10 cun of following electronic products, as 10 cun of following mobile phone or panel computers etc., make the scope of application of infrared touch technology wider, can be satisfied with various actual demands, and, in this infrared touch panel 1, its display screen 13 can directly be fitted, infrared ray lamp plate 16, lower light guide 14 display screens 13 and upper light guide 12 sequentially butt are fixed, and avoid arranging frame fixed sturcture, make the frame of complete machine less, and thinner.
In the present embodiment, infrared emitting lamp 163 on infrared ray lamp plate 16 and infrared receiver lamp 164 are right against respectively the sidewall of lower light guide 14 and arrange, and it is skewed that the lateral wall of the lateral wall of upper light guide 12 and lower light guide 14 is respectively, angle of inclination is 45 °, like this, the infrared ray that infrared emitting lamp 163 sends can level be incident upon in lower light guide 14, and via the reflection of 45 ° of dip plane, be incident upon vertically upward in light guide 12, and under the reflection of 45 ° of dip plane of upper light guide 12, can horizontal outgoing, thereby be formed on the infra-red detection net on display screen 13.
Certainly, not necessarily 45 °, the angle of inclination of the lateral wall of the lateral wall of upper light guide 12 and lower light guide 14, according to actual needs, also can be set to other angle, forms infra-red detection net and can as long as can meet on display screen 13.
In the present embodiment, infrared emitting lamp 163 and infrared receiver lamp 164 are row's shape to be arranged, is respectively arranged with two row's infrared emitting lamps 163 and two row's infrared receiver lamps 164, infrared emitting lamp 163 and infrared receiver lamp 164 positioned opposite, like this, four bank lights are around shape and arrange.Or infrared emitting lamp 163 can be arranged crosswise with infrared receiver lamp 164, can as long as meet transmitting and receive.
On face-piece 15, be also provided with face-piece decoration 11, in the form of a ring, it is placed in the opening part of face-piece 15 cavity volumes 151 to this face-piece decoration 11, and is pressed on light guide 12, thereby lower light guide 14, display screen 13, upper light guide 12 and face-piece 15 are sequentially compressed, be fixed in face-piece 15.
In the present embodiment, the shape of face-piece decoration 11 matches with the peripheral shape of face-piece 15, and its lower surface is extended multiple connection straps 111 down, connection strap 111 is placed on the madial wall of face-piece 15, thereby, utilizing screw etc., face-piece decoration 11 can be connected on the madial wall of face-piece 15.
Certainly, for being pressed on upper light guide 12 of keeping that face-piece decoration 11 can be more firm, thereby display screen 13 and lower light guide 14 positions are fixed, in above-mentioned face-piece decoration 11, be provided with through hole 112, utilize the securing members such as screw through this through hole 112, thereby apply pressure down, light guide 12 in compression can to face-piece decoration 11.
Utilize face-piece decoration 11 to be connected on light guide 12, display screen 13 is connected on lower light guide 14, forms the relation of upper and lower level butt, can prevent that light guide 12 and lower light guide 14 are out of shape.
In the present embodiment, infrared ray lamp plate 16 is arranged on the bottom of the cavity volume 151 of face-piece 15, and it comprises wiring board 161, and above-mentioned multiple infrared emitting lamps 163 and 164, multiple infrared receiver lamp are arranged on this wiring board 161.
In the cavity volume 151 of face-piece 15, be provided with multiple grooves 153, the plurality of groove 153 is around wiring board 161 peripheries layouts, and the plurality of groove 153 can block the lateral wall of wiring board 161, thereby increases the intensity of wiring board 161, the distortion of restriction wiring board 161.
Be provided with infrared scan chip 166 at above-mentioned wiring board 161 back sides, corresponding, bottom at face-piece 15 cavity volumes 151 is provided with avoiding hollow groove 152, like this, after wiring board 161 is placed in cavity volume 151, infrared scan chip 166 is placed in this avoiding hollow groove 152, thereby whole wiring board 161 is sunk, and the entirety of infrared touch panel 1 can be done thinlyyer.
Above-mentioned infrared touch panel 1 is mainly reflected in the improvement of following many aspects: upper light guide 12 and the independent assembling of lower light guide 14; The fixing processing mode of upper strata light guide; The combination IR leaded light of upper light guide 12 and lower light guide 14; Upper light guide 12 and lower light guide 14 respectively with the processing of display screen 13; The anti-deformation processing of upper light guide 12 and lower light guide 14; Avoid the treatment technology of offset.
As shown in Fig. 8 and 9, the principle of work schematic diagram of the infrared touch panel 1 providing for the present embodiment, its course of work is as follows: MCU starts infrared scan chip 166 and works---2) infrared lamp carry out periodically transmitting and reception work---3) infrared emitting lamp 163 is by the lower light guide 14 of bottom, reflect 45 °---4) vertical sand shooting is to the upper light guide 12 at top,---5) infrared ray level above display screen 13 pass through---6 that reflect again 45 °) infrared level is passed to light guide 12, reflect 45 °---7) extremely lower light guide 14 of vertical sand shooting,---8) level be passed to infrared receiver lamp 164 and receive---9 that reflect again 45 °) infrared signal is converted to electric signal, after the processing such as infrared scan chip ADC, obtain original touch value---10) MCU gets after original touch value, be treated to relative coordinate figure---11) coordinate figure offered mobile phone or dull and stereotyped master control by MCU, response is made in master control, thereby realize the touch controllable function of complete machine.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. infrared touch panel, it is characterized in that, comprise face-piece, infrared ray lamp plate and display screen, in described face-piece, there is the cavity volume of upper end open, described infrared ray lamp plate and display screen are sequentially placed in respectively described cavity volume, and described infrared ray lamp plate is positioned at the lower rear of described display screen;
Described infrared ray lamp plate is provided with multiple infrared emitting lamps and multiple infrared receiver lamp, described infrared emitting lamp and described infrared receiver lamp positioned opposite, and be around shape and arrange;
Described display screen below is provided with the lower light guide that infrared ray that the infrared emitting lamp in described infrared ray lamp plate one side is sent reflects vertically upward, described lower light guide in the form of a ring, be placed on described infrared ray lamp plate, and be placed in the outside of described infrared emitting lamp and infrared receiver lamp;
Described display screen top is provided with in the form of a ring and infrared ray reflected in parallel to its opposite side of vertically injecting in it is also then reflexed to the upper light guide in the infrared receiver lamp on infrared ray lamp plate opposite side vertically downward.
2. infrared touch panel as claimed in claim 1, it is characterized in that, multiple described infrared emitting lamps are row's shape and arrange, form infrared emitting lamp bank, multiple described infrared receiver lamps are row's shape and arrange, form and the infrared receiver lamp bank of described infrared emitting lamp bank positioned opposite, described infrared ray lamp plate be provided with two described in infrared receiver lamp bank described in infrared emitting lamp bank and two, described in two, described in infrared emitting lamp bank and two, infrared receiver lamp bank is around shape and arranges.
3. infrared touch panel as claimed in claim 1, is characterized in that, described infrared emitting lamp and infrared receiver lamp are right against respectively the sidewall of described lower light guide and arrange.
4. infrared touch panel as claimed in claim 3, is characterized in that, the lateral wall of described upper light guide and the lateral wall of lower light guide are respectively skewed, and angle of inclination is 45 °.
5. the infrared touch panel as described in claim 1 to 4 any one, it is characterized in that, the opening part of the cavity volume of described face-piece is provided with face-piece decoration in the form of a ring, described face-piece decoration, upper light guide, display screen, lower light guide and infrared ray lamp plate butt sequentially from top to bottom.
6. infrared touch panel as claimed in claim 5, is characterized in that, the lower surface of described lower cover is extended with multiple connection straps that are placed in described cavity volume down, and described connection strap is connected in the madial wall of described cavity volume.
7. infrared touch panel as claimed in claim 5, is characterized in that, in described face-piece decoration, is provided with multiple through holes, in described through hole, is equipped with securing member, and described securing member is connected in described face-piece.
8. the infrared touch panel as described in claim 1 to 4 any one, it is characterized in that, described infrared ray lamp plate comprises wiring board, described infrared emitting lamp and infrared receiver lamp are located on described wiring board, the bottom of described cavity volume is provided with multiple grooves, multiple described grooves are arranged around described wiring board, and are blocked the lateral wall of described wiring board.
9. infrared touch panel as claimed in claim 8, is characterized in that, the back side of described wiring board is provided with infrared scan chip, and the bottom of described cavity volume is provided with avoiding hollow groove, and described infrared scan chip is placed in described avoiding hollow groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320782122.1U CN203606815U (en) | 2013-11-27 | 2013-11-27 | Infrared touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320782122.1U CN203606815U (en) | 2013-11-27 | 2013-11-27 | Infrared touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203606815U true CN203606815U (en) | 2014-05-21 |
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ID=50719478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320782122.1U Expired - Fee Related CN203606815U (en) | 2013-11-27 | 2013-11-27 | Infrared touch screen |
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| Country | Link |
|---|---|
| CN (1) | CN203606815U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110297570A (en) * | 2019-06-28 | 2019-10-01 | 长春融成智能设备制造股份有限公司 | Flame proof infrared touching device based on light reflection principle |
| US10884553B2 (en) | 2015-11-03 | 2021-01-05 | Hewlett-Packard Development Company, L.P. | Light guide and touch screen assembly |
| CN113377239A (en) * | 2021-07-02 | 2021-09-10 | 兰州空间技术物理研究所 | Method for compactly installing touch screen and circuit board |
-
2013
- 2013-11-27 CN CN201320782122.1U patent/CN203606815U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10884553B2 (en) | 2015-11-03 | 2021-01-05 | Hewlett-Packard Development Company, L.P. | Light guide and touch screen assembly |
| CN110297570A (en) * | 2019-06-28 | 2019-10-01 | 长春融成智能设备制造股份有限公司 | Flame proof infrared touching device based on light reflection principle |
| CN113377239A (en) * | 2021-07-02 | 2021-09-10 | 兰州空间技术物理研究所 | Method for compactly installing touch screen and circuit board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20191127 |