CN203643982U - Infrared touch screen - Google Patents
Infrared touch screen Download PDFInfo
- Publication number
- CN203643982U CN203643982U CN201320749797.6U CN201320749797U CN203643982U CN 203643982 U CN203643982 U CN 203643982U CN 201320749797 U CN201320749797 U CN 201320749797U CN 203643982 U CN203643982 U CN 203643982U
- Authority
- CN
- China
- Prior art keywords
- infrared
- touch
- panel
- face
- light guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical group 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Abstract
The utility model provides an infrared touch screen, belongs to the field of touch screens, and aims to solve the problem that in the prior art, an infrared receiver cannot receive infrared light because the relative positions of a light guide part and a touch part are changed. The infrared touch screen comprises a panel, an infrared emission device and the infrared receiver, wherein the panel comprises the touch part and the light guide part; the touch part and the light guide part are integrally formed; the touch part comprises a touch face and a non-contact face; the infrared emission device and the infrared receiver are arranged on the non-contact face of the panel; the light guide part is positioned on the periphery of the touch part; a plurality of transmission through holes for transmitting infrared light are formed between the touch part and the light guide part on the periphery of the touch part; an infrared emission reflective face and an infrared receiving reflective face are arranged on the light guide part, the infrared emission reflective face is used for changing the direction of the infrared light emitted from the infrared emission device and then transmitting the infrared light to the infrared receiver, and the infrared emission reflective face is used for changing the direction of the infrared light and then transmitting the infrared light to the infrared receiver. The relative positions of the light guide part and the touch part of the touch screen are fixed, the structure is stable, and the touch control function is stable.
Description
Technical field
The utility model relates to touch-screen field, particularly relates to infrared touch panel.
Background technology
Whether infrared touch panel is the infrared ray matrix gathering in X, Y-direction before screen being close to, have infrared ray to be detected the also touch of consumer positioning by object blocks by ceaselessly scanning.This touch-screen is, before display, a housing is installed, and is designed with circuit board, thereby arranges infrared launcher and infrared receiving device on screen four limits, one by one the corresponding infrared ray matrix anyhow intersecting that forms in housing.The complete circle of every scanning, if all infrared tubes are sensible, green light, represents that all are normal.In the time having touch, finger or other thing will block the infrared ray anyhow through this position, after touch-screen when scanning finds and be sure of to have an infrared ray to be obstructed, and when red, indicate that infrared ray is obstructed, may there is touch, change at once another coordinate and scan again, if find that a more other axle also has an infrared ray to be obstructed simultaneously, amber light is bright, represent to find to touch, and find that by two the infrared tube position message intercepting is to main frame, judge the position of touch point at screen through calculating.At the basic assembling mode of existing infrared touch panel, be all that infrared tube is put on the touch face of touch-screen, in this structure, there is following problem: 1, anti-strongly disturbing ability; 2, all there is wider and higher edge projection in four limits of infrared touch panel touch face.
For addressing the above problem, at present also there is relevant improvement: infrared launcher and infrared receiving device are arranged on to the touch-screen back side, and in panel surrounding, guiding device is installed, and utilize the total reflection principle of light, make infrared light change transmission direction after the reflecting surface on guiding device.Infrared emission and receiving trap are arranged on to touch-screen bottom and can reduce ambient light and disturb, the effect that can accomplish again low narrow frame simultaneously.But, in this technology, guiding device installs in panel surrounding, guiding device with occur being connected of panel loosening time, can cause the angle of reflecting surface to change, the infrared light of infrared launcher transmitting cannot be transferred on infrared receiving device, thereby cannot realize touch control operation.
Utility model content
In order to overcome the deficiencies in the prior art, it is a kind of that the purpose of this utility model is to provide
For addressing the above problem, the technical scheme that the utility model adopts is as follows:
A kind of infrared touch panel, comprises panel, infrared launcher and infrared receiving device, and described panel comprises touch portion and light guide section, and described light guide section and touch portion are one-body molded; Described touch portion comprises touch face and the non-touch face at its back side, and infrared launcher and infrared receiving device are arranged on the non-touch face of panel; Light guide section is positioned at the periphery of touch portion, is provided with multiple for transmitting the transmission through hole of infrared light between touch portion and light guide section along touch portion periphery; On light guide section, be provided with infrared reflecting face, comprise that infrared light for infrared launcher is sent changes to be transferred to the transmitting infrared reflecting face of infrared receiving device after direction and for infrared light being changed to the reception infrared reflecting face that is transferred to infrared receiving device after direction.
Preferably, the angle of described infrared reflecting face and panel is α, and the angle of transmission through hole and panel is β, and wherein they meet following relation: β=2 α.
Preferably, described α is 10 °-40 °.
Preferably, described α is 15 ° or 30 °.
Preferably, described infrared reflecting face is infrared reflecting film.
Preferably, described infrared reflecting face is the outer reflector layer of metallic red.
Preferably, described infrared reflecting face is metal oxide infrared reflecting layer.
Preferably, described transmitting infrared reflecting face and reception infrared reflecting face are provided with for dustproof transmission element with touch face cooperation place.
Preferably, the surrounding of described panel is provided with frame.
Light guide section of the present utility model and contact site are one-body molded, and relative position is fixed, and can guarantee that infrared luminous energy is received by infrared receiving device, make touch control function stable.In addition, the reflection of the general light guide section of the utility model realizes infrared launcher and infrared receiving device is arranged on the non-touch face of panel, thereby can realize the effect that reduces and reduce frame, can reduce again the interference of ambient light simultaneously.In addition, infrared external reflection face is set to 10 °-40 ° with angle and the transmission through hole of the face of touch with the angle of the face of touch, can reduce the height of light guide section.
Brief description of the drawings
Fig. 1 is the cross section structure schematic diagram of infrared touch panel of the present utility model;
Fig. 2 is the angle schematic diagram of infrared reflecting face and transmission through hole and the face of touch;
Wherein, 1, touch portion; 11, non-touch face; 12, touch face; 13, transmission through hole; 2, light guide section; 21, transmitting infrared reflecting face; 22, receive infrared reflecting face; 3, infrared launcher; 4, infrared receiving device; 5, panel; 6, frame; 61, transmission element.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of infrared touch panel, comprises panel 5, infrared launcher 3 and infrared receiving device 4, and panel 5 is glass or transparent plastic panel, and it comprises touch portion 1 and light guide section 2, and light guide section 2 is one-body molded with touch portion 1.Touch portion 1 comprises touch face 12 and non-touch face 11, and infrared launcher 3 and infrared receiving device 4 are arranged on the non-touch face 11 of panel 5.Light guide section 2 is positioned at the periphery of touch portion 1, is provided with multiple for transmitting the transmission through hole 13 of infrared light between touch portion 1 and light guide section 2 along touch portion 1 periphery.The corresponding transmission through hole 13 of each infrared launcher 3 and each infrared receiving device 4 arranges.On light guide section 2, be provided with infrared reflecting face, it comprises transmitting infrared reflecting face 21 and receives infrared reflecting face 22, transmitting infrared reflecting face 21 is transferred to the infrared reflecting face 22 that receives after changing direction for the infrared light that infrared launcher 3 is sent, and is transferred to infrared receiving device 4 and receive infrared reflecting face 22 after infrared light being changed to direction.
The angle of infrared reflecting face and panel 5 is α, and transmission through hole 13 is β with the angle of panel 5, wherein, and β=2 α.α is 10 °-40 °.Within the scope of this, the processing of light guide section 2 is more convenient, and the height of light guide section 2 is lower, and preferably, α is 15 ° or 30 °.
In the utility model, infrared reflecting face can infrared reflecting film, can be also the outer reflector layer of metallic red, and as copper, aluminium, silver, gold etc., it can also be metal oxide reflector layer, as titania, indium oxide etc.In the present embodiment, infrared reflecting layer is infrared reflecting film.In order to protect panel 5, prevent that panel 5 surroundings from being scratched, in panel 5 surroundings, frame 6 is set.In order to prevent launching infrared reflecting face 21 and receive infrared reflecting face 22 by contamination by dust, cause weakening reflecting effect, transmitting infrared reflecting face 21 and receive infrared reflecting face 22 and touch face 12 cooperation places be provided with make with glass or transparent plastic for dustproof transmission element 61.
Infrared launcher 3 sends infrared light, infrared light passes to transmitting infrared reflecting face 21 by transmission through hole 13, the infrared light reflecting through transmitting infrared reflecting face 21 is parallel to touch face 12 and is transferred to the infrared reflecting face 22 that receives, it is again by infrared light reflection, and infrared light is transferred to infrared receiving device 4 through transmission through hole 13.
Above-mentioned embodiment is only preferred implementation of the present utility model; the scope that can not limit with this utility model protection, the variation of any unsubstantiality that those skilled in the art does on basis of the present utility model and replacement all belong to the utility model scope required for protection.
Claims (9)
1. an infrared touch panel, comprises panel, infrared launcher and infrared receiving device, it is characterized in that: described panel comprises touch portion and light guide section, and described light guide section and touch portion are one-body molded; Described touch portion comprises touch face and the non-touch face at its back side, and infrared launcher and infrared receiving device are arranged on the non-touch face of panel; Light guide section is positioned at the periphery of touch portion, is provided with multiple for transmitting the transmission through hole of infrared light between touch portion and light guide section along touch portion periphery; On light guide section, be provided with infrared reflecting face, comprise that infrared light for infrared launcher is sent changes to be transferred to the transmitting infrared reflecting face of infrared receiving device after direction and for infrared light being changed to the reception infrared reflecting face that is transferred to infrared receiving device after direction.
2. a kind of infrared touch panel as claimed in claim 1, is characterized in that: the angle of described infrared reflecting face and panel is α, and the angle of transmission through hole and panel is β, and wherein they meet following relation:
β=2α。
3. a kind of infrared touch panel as claimed in claim 2, is characterized in that: described α is 10 °-40 °.
4. a kind of infrared touch panel as claimed in claim 3, is characterized in that: described α is 15 ° or 30 °.
5. a kind of infrared touch panel as claimed in claim 1, is characterized in that: described infrared reflecting face is infrared reflecting film.
6. a kind of infrared touch panel as claimed in claim 1, is characterized in that: described infrared reflecting face is the outer reflector layer of metallic red.
7. a kind of infrared touch panel as claimed in claim 1, is characterized in that: described infrared reflecting face is metal oxide infrared reflecting layer.
8. a kind of infrared touch panel as described in claim 1 to 7 any one, is characterized in that: described transmitting infrared reflecting face and reception infrared reflecting face are provided with for dustproof transmission element with touch face cooperation place.
9. a kind of infrared touch panel as claimed in claim 8, is characterized in that: the surrounding of described panel is provided with frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320749797.6U CN203643982U (en) | 2013-11-22 | 2013-11-22 | Infrared touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320749797.6U CN203643982U (en) | 2013-11-22 | 2013-11-22 | Infrared touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203643982U true CN203643982U (en) | 2014-06-11 |
Family
ID=50875211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320749797.6U Expired - Lifetime CN203643982U (en) | 2013-11-22 | 2013-11-22 | Infrared touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203643982U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112667113A (en) * | 2021-02-23 | 2021-04-16 | 中航华东光电有限公司 | High-precision infrared touch screen |
-
2013
- 2013-11-22 CN CN201320749797.6U patent/CN203643982U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112667113A (en) * | 2021-02-23 | 2021-04-16 | 中航华东光电有限公司 | High-precision infrared touch screen |
| CN112667113B (en) * | 2021-02-23 | 2023-02-10 | 中航华东光电有限公司 | High-precision infrared touch screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |
|
| CX01 | Expiry of patent term |