CN201497972U - Sensor and optical touch-control module thereof - Google Patents
Sensor and optical touch-control module thereof Download PDFInfo
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- CN201497972U CN201497972U CN2009201684065U CN200920168406U CN201497972U CN 201497972 U CN201497972 U CN 201497972U CN 2009201684065 U CN2009201684065 U CN 2009201684065U CN 200920168406 U CN200920168406 U CN 200920168406U CN 201497972 U CN201497972 U CN 201497972U
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Abstract
A sensor comprises a plurality of pixels positioned on a base plate. Each pixel comprises a light sensing component; and the plurality of pixels are arranged in different spacing or/and different photosensitivity. Through the special arrangement modes provided by the utility model, the sensor can compensate the tan function with light distribution so as to obtain uniform light intensity and improve the sensing effect of the sensor.
Description
Technical field
The utility model is relevant a kind of sensor and optical touch module thereof, refers in particular to a kind of sensor and optical touch module thereof that special pixel is arranged that have.
Background technology
Constantly progressive and user is for electronic installation demand in the use along with modern society science and technology, common on the market electronic installation all gradually trend " portable " reach the developing direction of " miniaturization ".In these portable electron devices, no matter be electronic products such as personal digital aid (PDA), Smart Phone or stock handset, more and more the polyelectron product all has touch control screen and with pointer, the button that the user can be selected to use be positioned at the electronic installation periphery or seeing through pointer clicks function choosing-item shown on the Touch Screen with the input service of carrying out literal or symbol or operate above-mentioned electronic product.For example, these portable electron devices can utilize image on the touch control manner indication display, choose project on the menu or the like function.
The above-mentioned contact panel that adopts can be reached the operation-interface of intuitive, therefore is widely used on the electronic product.Contact panel can be categorized into according to its sensing principle and comprise optical type, Supersonic wave mode, resistive film type, capacitance type and piezo-electric type or the like.
The optical type contact panel is to adopt optical module to constitute the main body of contact panel, utilizes light to be pressed down contact panel by user's finger or pointer and produces shield, and form intensity signal, and according to the difference of light signal, analyze the position that presses signal.
But as above-mentioned optics sensing is when being configured in actual use, the error that distributes and caused at the so-called tan function light of analytically can producing of optics, for the light that compensates above-mentioned tan function distributes, in a kind of known techniques, be that circuit board making is become arcuation, the corresponding above-mentioned tan function light of locations of pixels that is positioned on the circuit board distributed, to obtain uniform light intensity, but the arc circuit board has suitable difficulty on making, and the precision of its making also can't effectively be grasped.In another known techniques, be to utilize extra optical module to be installed in the place ahead of sensor, for example that pore size is different perforates are arranged in sensor the place ahead, use and obtain uniform light intensity, yet, the making of above-mentioned optical module and assembling will cause the increase of cost of manufacture, more make overall architecture become quite complicated.
Because the above-mentioned public disappearance of constructional device when actual 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
Fundamental purpose of the present utility model provides a kind of sensor, and it has, and spacing varies in size or the pixel that photosensitive area varies in size, and to solve the error that tan function light distributes and caused, also can provide intensity light signal uniformly.
In order to achieve the above object, the utility model provides a kind of sensor, comprise: a plurality of pixels that are positioned on the substrate, each pixel comprises light sensing parts, wherein those pixels are to arrange with different spacing or different luminous sensitivity, or arrange with the combination of different luminous sensitivities with above-mentioned different spacing.
The utility model more provides a kind of optical touch module, comprising: a sensing region; One is arranged at the sensor at the edge of this sensing region, this sensor comprises a plurality of pixels that are positioned on the substrate, each pixel comprises light sensing parts, wherein those pixels are to arrange with different spacing or different sensitization size, or arrange with the combination of different luminous sensitivities with above-mentioned different spacing; At least one is arranged at the luminescence component at the edge of this sensing region; And at least one is arranged at the optical module at the edge of this sensing region, conducts to this sensing region with the light signal with luminescence component.
As above-mentioned structure, have on the sensor that spacing varies in size or the pixel that photosensitive area varies in size, its method for making is comparatively simple, so cost is lower; Moreover the utility model utilizes spacing to vary in size or the pixel that photosensitive area varies in size, and solving the error that tan function light distributes and caused, and the overall architecture of sensor is simple.
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 of first embodiment of sensor of the present utility model.
Fig. 2 is the pel spacing of sensor of the present utility model and the synoptic diagram of incident ray angle.
Fig. 2 A is the synoptic diagram of first embodiment of sensor of the present utility model.
Fig. 3 is the synoptic diagram of second embodiment of sensor of the present utility model.
Fig. 3 A is that sensor compensation tan function light of the present utility model distributes to obtain the synoptic diagram of even light intensity.
Symbol description
10 substrates, 11 pixels
110 light sensing parts, 20 lens
The distance L 1 of L light source sensor, L2, L3 spacing
θ angle curve A, B, C light signal strength
Embodiment
At first, see also shown in Fig. 1 to Fig. 3 A, the utility model proposes a kind of sensor, this sensor comprises a plurality of pixels 11 with specific arrangement aspect, make this sensor can solve the error that optic tan function distributes, make this sensor can obtain preferable optics sensing effect.
This sensor pack contains a plurality of pixels 11 that are positioned on the substrate 10, each pixel 11 comprises light sensing parts 110, wherein those pixels 11 are to arrange with different spacing or different luminous sensitivity (sensitivity), or arrange with the combination of different luminous sensitivities with above-mentioned different spacing.In other words, the utility model is that pixel 11 is arranged on this substrate 10 with the mode of different spacing or the aspect of different luminous sensitivities, or pixel 11 is arranged on this substrate 10 with the aspect of different spacing and different luminous sensitivities simultaneously, the light that makes those pixels 10 be able to corresponding tan function distributes.
Please refer to Fig. 1 to Fig. 2 A, it is first embodiment of the present utility model, and wherein those pixels 11 are that mode with different spacing is arranged on this substrate 10.See it by Fig. 1, in this specific embodiment, those pixels 11 are to be that benchmark and symmetric offset spread are on this substrate 10 with the center pixel that is positioned at middle position, the pixel 11 that is positioned at the both sides of this center pixel then is defined as the first rank pixel, pixel 11 in this pixel outside, first rank then is defined as the second rank pixel, in other words, and in this specific embodiment, this center pixel is to be a benchmark, and its left and right sides then is distributed with the first rank pixel and the second rank pixel accordingly.Please refer to Fig. 2, relation by trigonometric function, the spacing L1 of this first rank pixel and this center pixel is the product of L and tan θ, wherein L is the distances of lens 20 (it can be considered a light source) to this sensor, and θ is incident to the light of this center pixel and is incident to angle between the light of this first rank pixel, please notes, the assembly of Fig. 2 is not drawn according to the actual ratio size, in the situation of reality, the size of pixel 11 is very little, so spacing L1 quite approaches the product of L and tan θ.
In like manner, the spacing (L1+L2) of the second rank pixel and this center pixel is the product of L and tan 2 θ, and wherein L is the distance of a light source to this sensor, and 2 θ are incident to the light of this center pixel and are incident to angle between the light of this second rank pixel; And analogized to the outside of center pixel in this way.And from aforementioned calculation, the spacing L2 that more can learn the second rank pixel and this first rank pixel is L* (tan2 θ-tan θ), that is apart from having big more spacing between the center pixel neighbor 11 far away more, so that the position of those pixels 11 directly distributes corresponding to the light of tan function.Fig. 2 A then is the synoptic diagram of first specific embodiment, wherein has different spacings between the pixel 11 and changes, so that these light sensing parts 110 of this pixel 11 receive light signal effectively.
Yet the utility model is not limited to above-mentioned enforcement aspect, and those pixels 11 can also be according to the application of reality with other similar systematicness or periodic the arrangement, so that this sensor can be eliminated the optics sensing error that tan function light distributes and caused.
On the other hand, please refer to Fig. 3, it shows second embodiment of the present utility model.In second specific embodiment, those pixels 11 are that the aspect with different luminous sensitivities is arranged on this substrate 10, and this luminous sensitivity is controlled with the size of the photosensitive area of those pixels 11, but do not exceed with above-mentioned, for example reach the difference of luminous sensitivity with circuit methods, promptly the amplifying circuit at each pixel 11 back segment goes to design different gain (gain) characteristic; Or reach the difference of luminous sensitivity with plated film (coating) method, promptly the photosensitive region at each pixel 11 removes to plate the rete with different through characteristics, makes it have different photoperceptivities.See by Fig. 3, in this specific embodiment, those pixels 11 are to be that benchmark and symmetric offset spread are on this substrate 10 with the center pixel that is positioned at middle position, the pixel 11 that is positioned at the both sides of this center pixel then is defined as the first rank pixel, pixel 11 in this pixel outside, first rank then is defined as the second rank pixel, in other words, in this specific embodiment, this center pixel is to be a benchmark, its left and right sides then is distributed with the first rank pixel and the second rank pixel accordingly, and all have certain spacing L3 between each pixel 11, moreover the different photosensitive areas of those pixels 11 are to be benchmark and symmetry with this center pixel.
In this specific embodiment, the photosensitive area of this center pixel is the photosensitive area less than other those pixels; And the photosensitive area of the first rank pixel is the photosensitive area greater than this center pixel; The photosensitive area of the second rank pixel is again greater than the photosensitive area of this first rank pixel, and analogized to the outside of center pixel in this way.
Please refer to Fig. 3 A, wherein curve A is represented the intensity of the light signal that light source sends, wherein with the light intensity of middle position (with respect to center pixel) for the highest, and outwards successively decrease according to the distance of itself and middle position; And curve B is represented the intensity of 11 light signals that can receive of those pixels, arranges according to the variation of the photosensitive area of the utility model second embodiment, and the light intensity that center pixel can receive is minimum, and complies with the distance of itself and center pixel and outwards increase progressively.Curve C is then represented the light intensity that sensed by these light sensing parts 110, by the complementary characteristic of curve A and curve B, makes sensor can obtain sensor light signal comparatively uniformly.
Yet the utility model is not limited to above-mentioned enforcement aspect, and the arrangement that those pixels 11 can also change with other similar systematicness or periodic luminous sensitivity according to the application of reality is so that this sensor can obtain sensor light signal comparatively uniformly.
In addition, the enforcement aspect of above-mentioned first and second embodiment is applied in any combination in addition, to improve the using value of sensor; And above-mentioned enforcement aspect also can be applicable to the optical sensing subassembly of array form.
The utility model more provides a kind of optical touch module of using the sensor, and this optical touch module comprises: a sensing region, at least one is arranged at the luminescence component at the edge of this sensing region, the optical module and the sensor of the present utility model at edge that at least one is arranged at this sensing region; Wherein this sensor is the edge that is arranged at this sensing region, it comprises a plurality of pixels that are positioned on the substrate, each pixel comprises light sensing parts, wherein those pixels are to arrange with different spacing or different luminous sensitivity, or arrange with the combination of different luminous sensitivities with above-mentioned different spacing, and that the concrete enforcement aspect of this sensing region can be consulted preamble is described; This luminescence component is to send light signal, and this optical module then conducts to this sensing region in order to the light signal with luminescence component.When pressing signal and put on this sensing region, this sensor then can receive the intensity signal of blocking, and an arithmetic element then can be judged position or the action that presses signal according to this light intensity signal.In addition, this optical module is to be the leaded light component reflector plate that maybe can trace back, but does not exceed with above-mentioned.
In sum, the utlity model has following all advantage:
1, the pixel on the sensor of the present utility model has the aspect that arrangement that spacing varies in size or photosensitive area vary in size, or have the spacing feature different simultaneously with photosensitive area, make this sensor can compensate the photodistributed error of tan function, can also obtain light signal comparatively uniformly, to improve the touch-control precision of the optical touch module of using this sensor.
2, the spacing of sensor of the present utility model varies in size or the pixel that photosensitive area varies in size, and has the advantage of easy making, so can reduce cost; And this sensor need not add other optical module, thus can save the making of complicated optical module, to simplify overall architecture.
The above only is a preferable possible embodiments of the present utility model; 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, and all is contained in the scope of the utility model claim.
Claims (10)
1. a sensor is characterized in that, comprises:
A plurality of pixels that are positioned on the substrate, each pixel comprise light sensing parts, and wherein those pixels are to arrange with different spacing or different luminous sensitivity, or arrange with the combination of different luminous sensitivities with above-mentioned different spacing.
2. sensor according to claim 1 is characterized in that: one of them of those pixels is center pixel, and the different spacing of those pixels is to be benchmark and symmetry with this center pixel.
3. sensor according to claim 1, it is characterized in that: those pixels are to have different photosensitive areas, or the amplifying circuit of those pixel back segments has different gain characteristics, or the photosensitive region of those pixels is coated with the rete of different through characteristics.
4. sensor according to claim 3 is characterized in that: one of them of those pixels is center pixel, and the different photosensitive areas of those pixels are to be benchmark and symmetry with this center pixel.
5. sensor according to claim 4 is characterized in that: the photosensitive area of this center pixel is the photosensitive area less than other those pixels.
6. an optical touch module is characterized in that, comprising:
One sensing region;
One is arranged at the sensor at the edge of this sensing region, this sensor comprises a plurality of pixels that are positioned on the substrate, each pixel comprises light sensing parts, wherein those pixels are to arrange with different spacing or different luminous sensitivity, or arrange with the combination of different luminous sensitivities with above-mentioned different spacing;
At least one is arranged at the luminescence component at the edge of this sensing region; And
At least one is arranged at the optical module at the edge of this sensing region, conducts to this sensing region with the light signal with luminescence component.
7. optical touch module according to claim 6 is characterized in that: one of them of those pixels is center pixel, and the different spacing of those pixels is to be benchmark and symmetry with this center pixel.
8. optical touch module according to claim 6, it is characterized in that: those pixels are to have different photosensitive areas, or the amplifying circuit of those pixel back segments has different gain characteristics, or the photosensitive region of those pixels is coated with the rete of different through characteristics.
9. optical touch module according to claim 8 is characterized in that: one of them of those pixels is center pixel, and the different photosensitive areas of those pixels are to be benchmark and symmetry with this center pixel.
10. optical touch module according to claim 9 is characterized in that: the photosensitive area of this center pixel is the photosensitive area less than other those pixels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201684065U CN201497972U (en) | 2009-07-24 | 2009-07-24 | Sensor and optical touch-control module thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201684065U CN201497972U (en) | 2009-07-24 | 2009-07-24 | Sensor and optical touch-control module thereof |
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| CN201497972U true CN201497972U (en) | 2010-06-02 |
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| CN2009201684065U Expired - Fee Related CN201497972U (en) | 2009-07-24 | 2009-07-24 | Sensor and optical touch-control module thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107820618A (en) * | 2017-09-30 | 2018-03-20 | 深圳市汇顶科技股份有限公司 | Sensing pixels unit and optical fingerprint sensor |
| CN108021845A (en) * | 2016-10-31 | 2018-05-11 | 上海箩箕技术有限公司 | Optical fingerprint sensor module |
| CN108416248A (en) * | 2017-02-09 | 2018-08-17 | 上海箩箕技术有限公司 | Display module |
| CN108416247A (en) * | 2017-02-09 | 2018-08-17 | 上海箩箕技术有限公司 | Optical fingerprint sensor module |
| CN110427854A (en) * | 2018-09-28 | 2019-11-08 | 神盾股份有限公司 | Sense mould group and its design method |
-
2009
- 2009-07-24 CN CN2009201684065U patent/CN201497972U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108021845A (en) * | 2016-10-31 | 2018-05-11 | 上海箩箕技术有限公司 | Optical fingerprint sensor module |
| CN108416248A (en) * | 2017-02-09 | 2018-08-17 | 上海箩箕技术有限公司 | Display module |
| CN108416247A (en) * | 2017-02-09 | 2018-08-17 | 上海箩箕技术有限公司 | Optical fingerprint sensor module |
| CN107820618A (en) * | 2017-09-30 | 2018-03-20 | 深圳市汇顶科技股份有限公司 | Sensing pixels unit and optical fingerprint sensor |
| CN110427854A (en) * | 2018-09-28 | 2019-11-08 | 神盾股份有限公司 | Sense mould group and its design method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20110724 |