CN201497973U - Optical touch control module with high signal-to-noise ratio and device thereof - Google Patents
Optical touch control module with high signal-to-noise ratio and device thereof Download PDFInfo
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- CN201497973U CN201497973U CN200920168407XU CN200920168407U CN201497973U CN 201497973 U CN201497973 U CN 201497973U CN 200920168407X U CN200920168407X U CN 200920168407XU CN 200920168407 U CN200920168407 U CN 200920168407U CN 201497973 U CN201497973 U CN 201497973U
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Abstract
The utility model relates to an optical touch control module with high signal-to-noise ratio, which comprises a sensing area, two sensors, at least two light emitting assemblies and at least two light guide assemblies, wherein the sensors are arranged at the edge of the sensing area; the light emitting assemblies are used for outputting at least one light signal; and the light guide assemblies are independently arranged at the edge of the sensing area and guide the light signals output by at least two of the light emitting assemblies to the sensing area. Thereby, the light signals generate a modulation mechanism by utilizing a plurality of groups of light emitting assemblies to filter and remove stray light entering from other directions so as to enhance the signal/noise ratio.
Description
Technical field
The utility model relates to a kind of optical touch module and device thereof, refers in particular to a kind of optical touch module and device thereof with high s/n ratio.
Background technology
Along with modern society science and technology is constantly progressive, contact panel is controlled in order to the user to be used in a large number on the electronic product, and contact panel mainly is to cooperate picture that display presented as a kind of intuition and operate easy operation-interface; The kind development of contact panel so far, according to structure and sensing mode different, more common contact panel roughly can be divided at present: electric resistance touch-control panel, capacitance type touch-control panel, infrared-type (optical profile type) contact panel, sound wave type contact panel, and electromagnetic touch-control panel.
Resistance-type or capacitance type touch-control panel, it is that extra resistance capacitance assembly is set on panel, and judges the position coordinates that presses through the variation of detecting touch point magnitude of voltage.Another kind of optical touch control panel then is that light source and corresponding optics sensing component are set around display panels, and the light that utilizes the optics sensing component whether to detect corresponding light source is judged the position coordinates of touch point.
Optical touch control panel is owing to utilizing light to produce blocking of pressing position, to form the difference of intensity signal, to pick out the coordinate of pressing position.Traditional optical formula contact panel is that the reflector plate that can trace back is installed in the edge of field of illumination, utilize illuminating source with the collocation of reflector plate of can tracing back with distribution of light in the field of illumination, so, the reflector plate that can trace back is vulnerable to the influence of external veiling glare, astigmatism, make signal/noise ratio low, cause the insensitive of touch-control; And the light uniformity coefficient that is distributed in the field of illumination is not good, and making can't the efficient control of carrying out electronic installation.
In view of the shortcoming of above-mentioned public constructional device when actual the using, and the accumulation individual is engaged on the related industry exploitation practice experience for many years, studies intensively, and proposes a kind of reasonable in design and effectively improve the structure of the problems referred to above finally.
The utility model content
The utility model provides a kind of optical touch module and device thereof with high s/n ratio, this optical touch module has the multi-group light-emitting assembly, make it produce modulation (modulation) mechanism, and carry out the analysis of frequency spectrum with regard to different sensing subregions, the parasitic light that enters by other direction of filtering, and then promote signal/noise ratio.
In order to achieve the above object, the utility model provides a kind of optical touch module with high s/n ratio, is to comprise: a sensing region; Two sensors that are arranged at the edge of this sensing region; At least two luminescence components, these at least two luminescence components are at least a light signals of output; And at least two leaded light components, these at least two leaded light components are the edges that are arranged at this sensing region independently, these at least two leaded light components are that the light signal that these at least two luminescence components are exported is directed to this sensing region.
This creation also provides a kind of optical touch control apparatus with high s/n ratio, is to comprise: a sensing region; Two sensors that are arranged at the edge of this sensing region; At least two luminescence components, these at least two luminescence components are at least a light signals of output; At least two leaded light components, these at least two leaded light components are the edges that are arranged at this sensing region independently, these at least two leaded light components are that the light signal that these at least two luminescence components are exported is directed to this sensing region; And an arithmetic element, it is to be coupled to this two sensors.
As above-mentioned structure, this plural luminescence component can produce at least a modulation scheme, make the scattered beam that comes out by leaded light component have resolvability, can judge by this light source that sensor is received or the light source of blocking by what person's leaded light component are produced, the parasitic light that can other light source of filtering in operational analysis enters, and then promote signal to noise ratio (S/N ratio).
For enabling further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet appended accompanying drawing only provide with reference to and explanation usefulness, be not to be used for to the utility model limitr in addition.
Description of drawings
Fig. 1 is the synoptic diagram for optical touch module of the present utility model.
Fig. 2 is the synoptic diagram that is distributed in this sensing region for light signal of the present utility model.
Fig. 3 is the light signal distribution schematic diagram when closing first luminescence component.
Symbol description
10 housings, 11 sensing regions
11A, 11B, 11C, 11D sensing subregion
12A first sensor 12B second sensor
The 13A first leaded light component 13B second leaded light component
13C the 3rd leaded light component 14A first luminescence component
The 14B second luminescence component 14C the 3rd luminescence component
15 arithmetic element LA, first light signal
The LB second light signal LC the 3rd light signal
The F touching signals
Embodiment
The utility model proposes a kind of optical touch module with high s/n ratio, this optical touch module is to utilize the luminescence unit of many groups to produce modulation scheme, use the signal/noise ratio (SNR) that improves this optical touch module, above-mentioned luminescence unit then comprises luminescence component and leaded light component.Optical touch module of the present utility model comprises a sensing region, two sensors, at least two luminescence components and at least two leaded light components, utilize many group (at least two groups) luminescence components to cooperate with leaded light component, to produce the modulation effect, and pass through this two different light signals of sensors reception, and then reach the effect of raising signal/noise ratio.
At first, see also Fig. 1 to shown in Figure 2, it is a specific embodiment of the utility model, and wherein this optical touch module comprises a sensing region 11; One first sensor 12A and one second sensor 12B; One first leaded light component 13A, one second leaded light component 13B and one the 3rd leaded light component 13C; And one first luminescence component 14A, one second luminescence component 14B and one the 3rd luminescence component 14C.In other words, in this specific embodiment, this optical touch module comprises the combination of three groups of luminescence components and leaded light component, carries out the judgement of position of touch to reach the blocking that utilizes light signal, and more can reach the purpose of raising signal/noise ratio.
In this specific embodiment, this sensing region 11 is to take shape in the housing 10, is example with the Touch Screen, and this sensing region 11 is and can carries out the display scope that control signal is imported by touch control manner.And this first leaded light component 13A, this second leaded light component 13B and the 3rd leaded light component 13C arrange along the edge of this sensing region 11, in other words, these at least two leaded light components are the edges that are arranged at this sensing region 11 independently, light signal is directed to this whole sensing regions 11.Moreover this first luminescence component 14A, this second luminescence component 14B and the 3rd luminescence component 14C then correspond respectively to the edge that the first leaded light component 13A, the second leaded light component 13B and the 3rd leaded light component 13C are arranged at this sensing region 11.In this specific embodiment, this first luminescence component 14A is an end opening that is arranged at this first leaded light component 13A, and this first leaded light component 13A then is directed to this sensing region 11 with the first light signal LA of first luminescence component 14A output; Similarly, this second luminescence component 14B and the 3rd luminescence component 14C are end openings that is arranged at this second leaded light component 13B and the 3rd leaded light component 13C respectively, so that the second light signal LB and the 3rd light signal LC are directed to this sensing region 11, so that sensing region 11 is distributed with uniform light signal, in order to reaching of touch controllable function.
In addition, this first sensor 12A and this second sensor 12B are arranged at the edge of this sensing region 11; In this specific embodiment, this first sensor 12A is arranged at the end opening of this first leaded light component 13A and is adjacent to this first luminescence component 14A, this second sensor 12B then is arranged at the side of the 3rd leaded light component 13C and away from the 3rd luminescence component 14C, therefore, by structure view it, optical touch module of the present utility model has by three first leaded light component 13A independently separately, the second leaded light component 13B and the 3rd leaded light component 13C, and the first leaded light component 13A, the second leaded light component 13B and the 3rd leaded light component 13C form the arrangement of U font along the edge of sensing region 11, this first sensor 12A and this second sensor 12B then are arranged at the same edge of this sensing region 11.
On the other hand, please refer to Fig. 2, it is the synoptic diagram that the light signal of this specific embodiment is distributed in this sensing region 11.Wherein, the first light signal LA that guided of the first leaded light component 13A is received by the second sensor 12B; The 3rd light signal LC that the 3rd leaded light component 13C is guided is received by first sensor 12A; And the second light signal LB that the second leaded light component 13B is guided is received by the first sensor 12A and the second sensor 12B, therefore, distribution by above-mentioned light signal, this sensing region 11 can be separated into four sensing subregion 11A, 11B, 11C and 11D, the utility model can be by the modulation of different luminescence units, cooperate above-mentioned four sensing subregion 11A, 11B, 11C and 11D, filtering the astigmatism of other direction, and then improve the signal/noise ratio of optical touch module.For instance, this first luminescence component 14A, this second luminescence component 14B and the 3rd luminescence component 14C can accept the control signal of frequency modulating or wavelength modulation and export the light signal of different frequency or wavelength, when touching signals F appears at sensing subregion 11D, because the first light signal LA that this first luminescence component 14A is sent can not appear in sensing subregion 11D in theory, but the first light signal LA that in fact still has scattering exerts an influence to touching signals F, therefore, the utility model can improve the signal to noise ratio (S/N ratio) of the touching signals F that appears at sensing subregion 11D by filtering the spectral response of the first light signal LA.
And for example shown in Figure 3, this first luminescence component 14A, the keying of this second luminescence component 14B and the 3rd luminescence component 14C is to accept sequential modulating signal control and the output light signal, when touching signals F appears at sensing subregion 11D, because the first light signal LA that this first luminescence component 14A is sent can not appear in sensing subregion 11D in theory, but the first light signal LA that in fact still has scattering exerts an influence to touching signals F, therefore, the utility model can improve the signal to noise ratio (S/N ratio) of the touching signals F that appears at sensing subregion 11D by closing the first luminescence component 14A.
On the other hand, the first luminescence component 14A of the present utility model, this second luminescence component 14B and the 3rd luminescence component 14C can also produce identical light signal, to reach the effect of optical touch.And in above-mentioned specific embodiment, this luminescence component can be light emitting diode (LED), and this leaded light component can be light pipe (light guide), but does not exceed with above-mentioned.
Moreover, the utility model more proposes a kind of optical touch control apparatus with high s/n ratio, it comprises an above-mentioned optical touch module and an arithmetic element 15 (as shown in Figure 1), and this arithmetic element 15 is coupled to this first sensor 12A and the second sensor 12B, with the intensity signal that this two sensors is received (be above-mentioned light signal power, hide information such as file) convert positional information to, use the purpose of reaching touch-control, and the feature of optical touch module is to be same as aforementioned content, does not repeat them here.
In sum, the utlity model has following all advantage:
1, optical touch module of the present utility model can be respectively produces modulation (modulation) mechanism and carries out the analysis of frequency spectrum with regard to different sensing subregions the multi-group light-emitting assembly, the parasitic light that enters by other direction of filtering, and then promote signal to noise ratio (S/N ratio) (S/N).
2, optical touch module of the present utility model is by multi-group light-emitting unit (comprising luminescence component and leaded light component), and can forming comparatively uniformly, light signal distributes.
The above only is a preferable possible embodiments of the present utility model, and is non-so limit to protection domain of the present utility model, so the equivalence techniques that uses the utility model instructions and diagramatic content to do such as changes, all is contained in the scope of the present utility model.
Claims (10)
1. the optical touch module with high s/n ratio is characterized in that, comprises:
One sensing region;
At least two sensors that are arranged at the edge of this sensing region;
At least two luminescence components, these at least two luminescence components are at least a light signals of output; And
At least two leaded light components, these at least two leaded light components are the edges that are arranged at this sensing region independently, these at least two leaded light components are that the light signal that these at least two luminescence components are exported is directed to this sensing region.
2. the optical touch module with high s/n ratio according to claim 1, it is characterized in that: these at least two leaded light components are to comprise one first leaded light component, one second leaded light component and one the 3rd leaded light component, and this first leaded light component, this second leaded light component and the 3rd leaded light component are to arrange along the edge of this sensing region.
3. the optical touch module with high s/n ratio according to claim 1 is characterized in that: these at least two luminescence components are to accept the control signal of frequency modulating or wavelength modulation and export at least a light signal.
4. the optical touch module with high s/n ratio according to claim 1, it is characterized in that: the keying of these at least two luminescence components is to accept sequential modulating signal control, and these at least two leaded light components are that keying according to these at least two luminescence components is to export at least a light signal.
5. the optical touch module with high s/n ratio according to claim 1 is characterized in that: these at least two luminescence components are light emitting diode, and these at least two leaded light components are light pipe.
6. the optical touch control apparatus with high s/n ratio is characterized in that, comprises:
One sensing region;
At least two sensors that are arranged at the edge of this sensing region;
At least two luminescence components, these at least two luminescence components are at least a light signals of output;
At least two leaded light components, these at least two leaded light components are the edges that are arranged at this sensing region independently, these at least two leaded light components are that the light signal that these at least two luminescence components are exported is directed to this sensing region; And
One arithmetic element, it is to be coupled to this two sensors.
7. the optical touch control apparatus with high s/n ratio according to claim 6, it is characterized in that: these at least two leaded light components are to comprise one first leaded light component, one second leaded light component and one the 3rd leaded light component, and this first leaded light component, this second leaded light component and the 3rd leaded light component are to arrange along the edge of this sensing region.
8. the optical touch control apparatus with high s/n ratio according to claim 6 is characterized in that: these at least two luminescence components are to accept the control signal of frequency modulating or wavelength modulation and export at least a light signal.
9. the optical touch control apparatus with high s/n ratio according to claim 6, it is characterized in that: the keying of these at least two luminescence components is to accept sequential modulating signal control, and these at least two leaded light components are that keying according to these at least two luminescence components is to export at least a light signal.
10. the optical touch control apparatus with high s/n ratio according to claim 6 is characterized in that: these at least two luminescence components are light emitting diode, and these at least two leaded light components are light pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920168407XU CN201497973U (en) | 2009-07-24 | 2009-07-24 | Optical touch control module with high signal-to-noise ratio and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920168407XU CN201497973U (en) | 2009-07-24 | 2009-07-24 | Optical touch control module with high signal-to-noise ratio and device thereof |
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| Publication Number | Publication Date |
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| CN201497973U true CN201497973U (en) | 2010-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920168407XU Expired - Lifetime CN201497973U (en) | 2009-07-24 | 2009-07-24 | Optical touch control module with high signal-to-noise ratio and device thereof |
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| CN (1) | CN201497973U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968583A (en) * | 2010-10-29 | 2011-02-09 | 松翰科技股份有限公司 | Optical touch liquid crystal display module |
| CN101976156A (en) * | 2010-10-14 | 2011-02-16 | 松翰科技股份有限公司 | Optical touch display |
| CN105511657A (en) * | 2014-09-26 | 2016-04-20 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| TWI547850B (en) * | 2015-08-12 | 2016-09-01 | 原相科技股份有限公司 | Optical detecting device capable of increasing signal-to-noise ratio and economizing power consumption |
-
2009
- 2009-07-24 CN CN200920168407XU patent/CN201497973U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976156A (en) * | 2010-10-14 | 2011-02-16 | 松翰科技股份有限公司 | Optical touch display |
| CN101968583A (en) * | 2010-10-29 | 2011-02-09 | 松翰科技股份有限公司 | Optical touch liquid crystal display module |
| CN105511657A (en) * | 2014-09-26 | 2016-04-20 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN105511657B (en) * | 2014-09-26 | 2018-10-12 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
| TWI547850B (en) * | 2015-08-12 | 2016-09-01 | 原相科技股份有限公司 | Optical detecting device capable of increasing signal-to-noise ratio and economizing power consumption |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DYNA TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: DUNNAN SCIENCE AND TECH. CO., LTD. Effective date: 20150511 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150511 Address after: Chinese Taiwan New Taipei City Patentee after: Lite-on Semiconductor Corp. Address before: Taiwan County, Taipei, China Patentee before: Dunnan Science and Tech. Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100602 |
|
| CX01 | Expiry of patent term |