CN104536240A - Optical touch screen camera assembly and manufacturing method thereof - Google Patents
Optical touch screen camera assembly and manufacturing method thereof Download PDFInfo
- Publication number
- CN104536240A CN104536240A CN201410603491.9A CN201410603491A CN104536240A CN 104536240 A CN104536240 A CN 104536240A CN 201410603491 A CN201410603491 A CN 201410603491A CN 104536240 A CN104536240 A CN 104536240A
- Authority
- CN
- China
- Prior art keywords
- emitting diode
- light emitting
- microscope base
- pwb
- wiring board
- 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.)
- Pending
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0425—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
Abstract
The invention discloses an optical touch screen camera assembly and a manufacturing method thereof. The module comprises a lens base, a lens, a printed circuit board, a light-sensing chip and a light-emitting diode, wherein the lens is arranged on the lens base; the light-sensing chip is attached to the printed circuit board, and is accommodated in the inner cavity of the lens base; the light-emitting diode is attached to the printed circuit board; and an oblique check block is arranged at a contact position between the lens base and the light-emitting diode to prevent light ray interference formed due to projection of light rays of the light-emitting diode onto a touch screen shell and reflection of the light rays onto a touch screen area.
Description
Technical field
The present invention relates to a kind of touch-screen camera module, especially relate to a kind of optical touch screen camera shooting module and manufacture method thereof.
Background technology
Along with the development of science and technology and the constantly perfect of touch screen technology, touch-screen product is mode of operation that is efficient and convenient and that intuitively can touch with it, is more and more subject to the extensive favor in market.What touch-screen was commonly used at present is divided into resistance-type, surface capacitance type, infrared-type, optical profile type etc.Optical touch screen has the advantages such as reaction velocity is fast, accuracy is high, long service life.
Optical touch screen principle of work is: respectively have a camera module and LED light lamp in the left upper right corner of touch-screen, LED light lamp is launched Infrared and is reflected through reflecting strips, received by sensitive chip again, reticule is formed in touch screen zone, when touching a bit, the reflection ray of this point is blocked, and is calculated the coordinate of this point by software, realizes touching reaction.
Conventional die package technique is, microscope base reference column is utilized to coordinate with PCB pilot hole, control X Y-direction deviation, during cooperation, material itself has tolerance, assemble rear deviation larger, and touch-screen product touch time to X Y-direction require very high, like this, for common camera module, sensitive chip and microscope base assemble tolerances because have: during SMT paster, sensitive chip and printed-wiring board (PWB) assemble tolerance, the single material of microscope base reference column, PCB aperture makes tolerance and overall co-ordination tolerance, and influence factor is more.
Camera module is the critical component of optical touch screen products, and therefore, conventional camera module, when assembling, by various factors, causes sensitive chip and optical center deviation comparatively large, not easily management and control.
Summary of the invention
The object of this invention is to provide a kind of improve module group assembling performance and touch-screen work time accuracy optical touch screen camera shooting module.
The present invention solves the problems of the technologies described above adopted technical scheme as described by below:
A kind of optical touch screen camera shooting module, comprise camera lens, microscope base, light emitting diode, sensitive chip and printed-wiring board (PWB), the cavity position of described microscope base is provided with stopper slot, and described sensitive chip snaps in described stopper slot.
Preferably, the contact site of described microscope base and described light emitting diode is provided with gradient block.
During assembling, the upper surface of described sensitive chip and the flat face of microscope base cavity design touch.
Further, described microscope base being provided with reference column, described printed-wiring board (PWB) being provided with the pilot hole for playing the guiding role when assembling.
Preferably, described microscope base is provided with LED lens, for regulating touch-screen glazed thread energy distribution.
Preferably, described printed-wiring board (PWB) is pasted one end bending of light emitting diode and is assemblied on microscope base by retaining structure.
Preferably, described camera lens is for exempting from focusing lens.
A manufacture method for optical touch screen camera shooting module, comprises the steps:
(1) by camera lens and microscope base assembling;
(2) light emitting diode and sensitive chip are mounted on a printed-wiring board;
(3) printed-wiring board (PWB) and microscope base that have mounted components and parts are assembled, the cavity position of described microscope base is provided with stopper slot, and when assembling, described sensitive chip snaps in described stopper slot;
(4) described printed-wiring board (PWB) pasted one end bending of light emitting diode and be assemblied on microscope base by retaining structure.
Further, gradient block is set in the contact site of described microscope base and described light emitting diode.
Further, diode installed lens on described microscope base.
Owing to have employed technique scheme, the tolerance that sensitive chip of the present invention and microscope base are assembled, only depends on the design tolerance of microscope base stopper slot.Tolerances factor reduces, and improves assembly precision.
Accompanying drawing explanation
By the description carried out its exemplary embodiment below in conjunction with accompanying drawing, the above-mentioned feature and advantage of the present invention will become apparent and easy understand.
Fig. 1 is the explosive view of optical touch screen camera shooting module in optical touch screen camera shooting module embodiment of the present invention;
Fig. 2 is the diagrammatic cross-section of optical touch screen camera shooting modular structure in embodiment;
Fig. 3 is the sectional view of B-B in Fig. 2;
Fig. 4 is the sectional view of A-A in Fig. 2;
Fig. 5 is the general assembly drawing of optical touch screen camera shooting module in embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, a detailed description is carried out to the present invention.
Fig. 1 is the explosive view of optical touch screen camera shooting module in optical touch screen camera shooting module embodiment of the present invention, as shown in Figure 1, optical touch screen camera shooting module in embodiment comprises: LED lens 1, light-shading glass 2, spacer ring 3, eyeglass 4, LED light lamp 5, sensitive chip 6, microscope base 7, printed-wiring board (PWB) 8.
Fig. 2 is the diagrammatic cross-section of optical touch screen camera shooting modular structure in embodiment.
Fig. 3 is the sectional view of B-B in Fig. 2, reflects the connection of each parts in Fig. 1, as figure can see, the inner chamber of microscope base 7 is provided with stopper slot 9, and described sensitive chip 6 snaps in described stopper slot 9.
The size of stopper slot 9 controls in the tolerance of setting compared with sensitive chip 6 Outside Dimensions, and X when sensitive chip 6 is assembled, Y-direction can only in this stopper slot 9.Simultaneously the reference column of microscope base 7 and the larger tolerance on fit of printed-wiring board (PWB) 8 pilot hole setting, only play the guiding role when assembling.
The tolerance that the design of stopper slot 9 makes sensitive chip 6 of the present invention assemble with microscope base 7, only depends on the design tolerance of microscope base stopper slot 9.The tolerances factor that camera module is installed reduces, and improves assembly precision.
Fig. 4 is the sectional view of A-A in Fig. 2, and as shown in the figure, the contact site of microscope base and described light emitting diode is provided with gradient block 10.The reason arranging gradient block 10 is: touch-screen main body is when assembling; have shell protection; because when light emitting diode light is launched, angular range is very large; when light emitting diode light encounters touch-screen shell; light can reflex to touch screen zone again; formed with the light emitting diode emission of light of touch screen zone itself and disturb, thus can erroneous judgement be caused.The present invention adds gradient block 10 at microscope base and light emitting diode contacts position and processes this surface, place, and the light making light emitting diode remove touch screen zone transmitting will be blocked.
Fig. 5 is the general assembly drawing of optical touch screen camera shooting module in embodiment.
The manufacture method of the present embodiment optical touch screen camera shooting module, comprises several installation steps below:
(1) camera lens and microscope base 7 are assembled: namely first eyeglass 4, light-shading glass 2, spacer ring 3 are joined with the advanced luggage of microscope base 7 parts, this product camera lens is for exempting from type of focusing, and camera lens is loaded onto namely passable, does not need to focus again;
(2) components and parts SMT mounts: sensitive chip 6 and LED light lamp 5 adopt SMT (surface mounting technology) to be attached on the pad of printed-wiring board (PWB) 8 relevant position;
(3) assembling of microscope base 7 and printed-wiring board (PWB) 8: microscope base 7 inner chamber design stopper slot 9, between stopper slot 9, line space design becomes slightly larger than sensitive chip 6 physical dimension, then the printed-wiring board (PWB) 8 posting components and parts is assembled with microscope base 7, when assembling, sensitive chip 6 profile snaps in the stopper slot of microscope base 7, and the flat face that sensitive chip 6 upper surface and microscope base 7 inner chamber design simultaneously touches;
(4) head of printed-wiring board (PWB) 8 pastes LED light lamp 5 position, and bending is contained on microscope base 7, adopts retaining structure between the printed-wiring board (PWB) 8 of this position and microscope base 7, then puts glue and is fixed.
After a glue is fixed, preferably, toast, or adopt additive method will put glue oven dry.
In order to light ray energy evenly arrangement effect, be contained in by LED lens 1 on microscope base 7, lens 1 play and regulate touch-screen glazed thread energy even arrangement effect.
The tolerance that sensitive chip of the present invention and microscope base are assembled, only depends on the design tolerance of microscope base stopper slot.Tolerances factor reduces, and improves assembly precision.
Although described above is principle of the present invention and embodiment; but; under above-mentioned instruction of the present invention, those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment, and these improve or distortion drops in protection scope of the present invention.It will be understood by those skilled in the art that specific descriptions are above to explain object of the present invention, not for limiting the present invention.Protection scope of the present invention is by claim and equivalents thereof.
Claims (14)
1. an optical touch screen camera shooting module, is characterized in that, comprising:
One microscope base;
One camera lens, described camera lens is installed on described microscope base;
One printed-wiring board (PWB);
One sensitive chip, wherein said sensitive chip is mounted on described printed-wiring board (PWB), and is contained in the inner chamber of described microscope base; And
One light emitting diode, wherein said light emitting diode is mounted on described printed-wiring board (PWB), and described microscope base and described light emitting diode contacts position are provided with gradient block, are reflected onto touch screen zone to prevent the ray cast of described light emitting diode to touch-screen shell and form light interference.
2. optical touch screen camera shooting module as claimed in claim 1, wherein said microscope base inner chamber has a protruding limiting section, and described limiting section forms a stopper slot, and described sensitive chip is located in described stopper slot.
3. optical touch screen camera shooting module as claimed in claim 1, wherein said light emitting diode is mounted on an end of described printed-wiring board (PWB), and the end of described printed-wiring board (PWB) is located in described microscope base further.
4., as the optical touch screen camera shooting module as described in arbitrary in claims 1 to 3, wherein said microscope base is also provided with LED lens, for regulating touch-screen glazed thread energy distribution.
5. an optical touch screen camera shooting module, is characterized in that, comprising:
One microscope base;
One camera lens, described camera lens is installed on described microscope base;
One printed-wiring board (PWB);
One sensitive chip, described sensitive chip is mounted on described printed-wiring board (PWB); And
One light emitting diode, wherein said light emitting diode is mounted on an end of described printed-wiring board (PWB), and the end of described printed-wiring board (PWB) is installed on described microscope base further after bending, thus with preset distance away from described printed-wiring board (PWB) for installing the part of described sensitive chip, thus the distance reduced between described light emitting diode and touch-screen reticule, thus strengthen the luminescence efficiency of described light emitting diode.
6. optical touch screen camera shooting module as claimed in claim 5, wherein said sensitive chip and described light emitting diode are installed on top surface and the bottom side surface of described printed-wiring board (PWB) respectively, and the end of described printed-wiring board (PWB) makes the position of described sensitive chip and described light emitting diode all be positioned at the same side of described printed-wiring board (PWB) after bending.
7. optical touch screen camera shooting module as claimed in claim 5, wherein said microscope base and described light emitting diode contacts position are provided with gradient block, be reflected onto touch screen zone form light interference to prevent the ray cast of described light emitting diode to touch-screen shell.
8. optical touch screen camera shooting module as claimed in claim 5, wherein said microscope base inner chamber has a protruding limiting section, and described limiting section forms a stopper slot, and described sensitive chip is located in described stopper slot.
9., as the optical touch screen camera shooting module as described in arbitrary in claim 5 to 8, wherein said microscope base is also provided with LED lens, for regulating touch-screen glazed thread energy distribution.
10. optical touch screen camera shooting module is applied to the method producing touch-screen reticule, it is characterized in that, comprises the steps:
A light-emitting diodes light that () is located in microscope base emits beam, and the light that described light emitting diode sends reflects to form described reticule through reflecting strips; And
B () to be arrived the sensitive chip in the stopper slot that the limiting section that is positioned the projection of described microscope base inner chamber formed through camera lens by the light that reflects, wherein said light emitting diode and described sensitive chip are mounted on printed-wiring board (PWB).
11. methods as claimed in claim 10, wherein said light emitting diode is mounted on an end of described printed-wiring board (PWB), and the end of described printed-wiring board (PWB) is further advanced by clamping mechanism and is installed on described microscope base, thus play the effect of locating described Light emitting diode.
12. methods as claimed in claim 10, the light that wherein said light emitting diode sends directive reflecting strips again after the light distributional effects of LED lens.
13. methods as claimed in claim 10, the gradient block that wherein said microscope base and described light emitting diode contacts position are arranged prevents from the ray cast of described light emitting diode to be reflected onto touch screen zone to touch-screen shell forming light and disturb.
14. methods as claimed in claim 10, focusing lens exempted from by wherein said camera lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410603491.9A CN104536240A (en) | 2010-12-02 | 2010-12-02 | Optical touch screen camera assembly and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410603491.9A CN104536240A (en) | 2010-12-02 | 2010-12-02 | Optical touch screen camera assembly and manufacturing method thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010570050.5A Division CN102004587A (en) | 2010-12-02 | 2010-12-02 | Optical touch screen camera shooting module and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104536240A true CN104536240A (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410603491.9A Pending CN104536240A (en) | 2010-12-02 | 2010-12-02 | Optical touch screen camera assembly and manufacturing method thereof |
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| CN (1) | CN104536240A (en) |
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| CN1667564A (en) * | 2004-03-09 | 2005-09-14 | 艾勒博科技股份有限公司 | Optical pointing device |
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| US20100078545A1 (en) * | 2008-09-26 | 2010-04-01 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | Lensless user input device with optical interference |
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| CN201583926U (en) * | 2010-01-20 | 2010-09-15 | 北京汇冠新技术股份有限公司 | Optical touch screen |
| CN201590066U (en) * | 2010-01-29 | 2010-09-22 | 宁波舜宇光电信息有限公司 | Optical touch screen |
| CN201628944U (en) * | 2009-11-13 | 2010-11-10 | 北京汇冠新技术股份有限公司 | Optical touch screen |
| CN201628945U (en) * | 2009-09-10 | 2010-11-10 | 北京汇冠新技术股份有限公司 | Touch screen with reflective strip |
-
2010
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Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1667564A (en) * | 2004-03-09 | 2005-09-14 | 艾勒博科技股份有限公司 | Optical pointing device |
| CN101261347A (en) * | 2007-03-09 | 2008-09-10 | 鸿富锦精密工业（深圳）有限公司 | Camera module group and method of manufacture |
| CN101802760A (en) * | 2007-08-30 | 2010-08-11 | 奈克斯特控股公司 | Optical touchscreen with improved illumination |
| CN101149458A (en) * | 2007-10-31 | 2008-03-26 | 无锡凯尔科技有限公司 | Chip packaged fixed focus focusing-free imaging module processing method |
| CN201178449Y (en) * | 2008-04-30 | 2009-01-07 | 北京鑫万佳科技发展有限公司 | Platform apparatus for capturing banker bill CCD image |
| US20100078545A1 (en) * | 2008-09-26 | 2010-04-01 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | Lensless user input device with optical interference |
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| CN201628945U (en) * | 2009-09-10 | 2010-11-10 | 北京汇冠新技术股份有限公司 | Touch screen with reflective strip |
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| CN201590066U (en) * | 2010-01-29 | 2010-09-22 | 宁波舜宇光电信息有限公司 | Optical touch screen |
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Application publication date: 20150422 |