CN101751154A - COB module of optical mouse and optical mouse - Google Patents
COB module of optical mouse and optical mouse Download PDFInfo
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- CN101751154A CN101751154A CN200810184180A CN200810184180A CN101751154A CN 101751154 A CN101751154 A CN 101751154A CN 200810184180 A CN200810184180 A CN 200810184180A CN 200810184180 A CN200810184180 A CN 200810184180A CN 101751154 A CN101751154 A CN 101751154A
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- printed circuit
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Abstract
The invention discloses a COB module of an optical mouse and an optical mouse. The COB module comprises a module printed circuit board, a chip, a light source element, a lens and a passive element, wherein the chip contains an inductor circuit and is welded on the module printed circuit board in a COB structure; the light source element is welded on the module printed circuit board; the lens is aligned with the chip which contains the inductor circuit, and the light source element; the passive element is welded on the module printed circuit board; and a controller circuit is arranged on the chip containing the inductor circuit to form an integral body, or arranged on another chip welded on the module printed circuit board. The COB module and the optical mouse integrate the controller circuit and the optical element of the optical mouse, solve the common problem that light path bias easily occurs in the optical mouse and enhance the imaging resolution. Since the keys are arranged independently and the wheel mechanism is arranged outside the COB module, the invention greatly increases the design degree of freedom of the optical mouse, reduces the cost of design alteration and lowers the requirements for contraposition and correction in the manufacturing process.
Description
Technical field
The present invention is about the chip on board (Chip-On-Board of a kind of optical mouse, particularly a kind of optical mouse; COB) module.
Background technology
The optics of optical mouse is formed as shown in Figure 1, produces and assembling for ease of a large amount of, and its spare part is separately produced.When assembling, light source component 12 and induction chip 14 are welded on the printed circuit board (PCB) (PCB) 16, light source holder 10 is fixed on the PCB 16 in the mode of closely cooperating, prevent that light source component 12 from shaking, PCB16 has opening 162 to allow light pass through, and lens 18 are put in the below of opening 162, and PCB 16 fixes in the mode of placing combination with lens 18, lens 18 are combined on the base 19 by groove 192 and 194 placements of fool proof structure, and light path is aimed at light hole 196.
Fig. 2 illustrates the light path of the optical mouse of Fig. 1, light source component 12 is generally ruddiness diode (LED), light is after light source component 12 penetrates, refraction and reflection through lens 18, pass on the plane that light hole 196 is projected to mouse below, light reflected is imaged onto on the induction chip 14 through lens 18 again.Because the feature and the degree of roughness difference of desktop, catoptrical energy power are also different, demonstrate the feature of image whereby.When mouse moved, induction chip 14 obtained continuous pattern, by the feature locations difference of image, compare of analysis before and after every image was handled, with direction and the displacement of judging that mouse moves.In other words, the quality of image quality is for influencing the principal element of mouse performance.Therefore, when each interelement in the optical mouse takes place loosening or misplaces, the reflected light of desktop can't follow correct light path and project induction chip 14, and the image that induction chip 14 captures can drift about or be fuzzy, makes image identification incorrect.
Distributed optics spare part is because each makers' mould differs, problem such as cause that mouse base height is different, interelement adaptation and fixed effect are not good, it is loosening to make that optical mouse when operation vertical direction takes place very easily, causes the skew of optical path and mistake burnt.
Assembly error when producing for reducing, U.S. Patent number 6462330 arrives lens packages in the encapsulation of induction chip, U.S. Patent number 7045775 all is packaged into lens and LED in the encapsulation of induction chip, and U.S. Patent number 7199350 all is packaged into the controller chip of lens, LED and mouse in the encapsulation of induction chip.Though the degree of integration height of these prior aries is not the COB structure, can be subjected to the restriction of chip pin position, in case the design alteration of pin position, the lead frame of whole encapsulation (lead frame) die sinking again, time-consuming and with high costs.
Differently, U.S. Patent number 6541762 and 6653724 is realized optical mouse with the COB encapsulation, and it is welded on the form of induction chip with naked crystalline substance on the less inferior PCB, and this time PCB is fixed on the main PCB of optical mouse again.The degree of integration of this optical mouse is not high, needs the PCB of COB is fixed on another piece PCB, therefore is also referred to as time COB.
Summary of the invention
The object of the present invention is to provide a kind of COB module of optical mouse of high degree of integration, this modular structure makes the position between optical element definitely fixing, be difficult for loosening or the changing of the relative positions between optical element, make light path more accurate, save the time that optical element is assembled and proofreaied and correct fully when producing, effectively improve the rate that manufactures a finished product.
Another object of the present invention is to provide a kind of optical mouse, the independent design of the mechanism of man-machine interface beyond the COB module, is increased the degree of freedom of optical mouse change design.
To achieve these goals, the invention provides a kind of COB module of optical mouse, comprise the module printed circuit board (PCB), the chip that contains inductor circuit is welded on this printed circuit board (PCB) with the COB form, other passive device and light source component also are welded on this printed circuit board (PCB), controller circuitry can be incorporated on this chip that contains inductor circuit, or preparation independently chips welding is on this printed circuit board (PCB) at another, lens form light path allows the light of this light source component can image in the chip that this contains inductor circuit.
According to the present invention, a kind of optical mouse comprises that above-mentioned COB module is fixed on the mouse base, this mouse base has light hole to be passed through for this light path, and button and idler wheel mechanism are arranged on this mouse base, and winding displacement connects this button and idler wheel mechanism and this module printed circuit board (PCB).
The present invention integrates the optics spare part and the controller circuitry of optical mouse, thereby improves design freedom, promotes imaging definition, lowers manufacturing and change the cost of design.
Description of drawings
Fig. 1 forms synoptic diagram for the optical element of existing optical mouse;
Fig. 2 is for having the sectional view after optical element combination is finished now;
Fig. 3 is the synoptic diagram according to COB module first embodiment of the present invention;
Fig. 4 is the synoptic diagram according to optical mouse embodiment of the present invention;
Fig. 5 is the side view of COB module second embodiment of the present invention;
Fig. 6 is the side view of COB module the 3rd embodiment of the present invention; And
Fig. 7 is the synoptic diagram of COB module the 4th embodiment of the present invention.
The main element label declaration:
10 light source holders
12 light source components
14 induction chips
16 printed circuit board (PCB)s
162 openings
18 lens
19 bases
192 grooves
194 fool proofs structure
196 light holes
30 COB modules
32 module printed circuit board (PCB)s
36 light traps
362 perforates
364 perforates
38 housings
382 trips
384 cutting grooves
40 lens
42 module chips
44 light source components
46 mouse bases
461 buttons and idler wheel mechanism
462 winding displacements
463 light holes
464 module seats
465 double-screw bolts
48 USB cables
50 COB modules
54 light traps
542 inserted structures
544 inserted structures
60 COB modules
64 light traps
65 lens
70 COB modules
74 lens
745 shading layers
Embodiment
Embodiment as shown in Figure 3, the COB module 30 of optical mouse comprises module printed circuit board (PCB) 32, is furnished with circuit on it.Adopt double pin encapsulation (DIP) or surface adhesion type element (Surface-Mount Device such as passive devices such as resistance, electric capacity; SMD; Also claim SMD element) encapsulation, be fixed on the module printed circuit board (PCB) 32 with plug-in unit welding or surface mounting technique (SMT).In order to simplify, do not illustrate details such as passive device and wiring among Fig. 3, these are well-known to those skilled in the art.The module chip 42 of integrating induction device circuit and controller circuitry is welded on the module printed circuit board (PCB) 32 with the COB structure, for example the light source component 44 of LED utilizes plug-in unit welding or SMT to be welded on the module printed circuit board (PCB) 32 with the form of DIP or SMD encapsulation, the position of light trap 36 fixed lenss 40, preferable, it is made for nontransparent material, only wear two perforates 362,364 allow the light of specific light path pass through, effect with isolated parasitic light, the light that light source component 44 produces passes perforate 362, through lens 40 refractions, pass cutting groove 384 on the housing 38 and the light hole 463 on the mouse base 46, be incident upon on the surface of mouse base 46 contacts, the image formation by rays that lens 40 are returned diffusion or scattering again obtains the distance that mouse moves through its identification to module chip 42, information such as direction.Present embodiment is integrated into modular structure with all optics spare parts, so the position between each optical element is definitely fixing, light path precision height, imaging are clear, save time of assembling and correcting optical element when producing.In the present embodiment, module chip 42 is to be welded on the downward side of module printed circuit board (PCB) 32 with the COB encapsulation technology.This COB module 30 allows an optical mouse only need a slice module printed circuit board (PCB) 32.In other embodiments, image sensor circuit and mouse controller circuit can be split up into two independent chips, be welded on respectively on the module printed circuit board (PCB) 32, but the chip that contains sensor circuit must optical system for alignment.
The COB framework that the present invention adopts makes design also flexible.When the chip pin position function has increase and decrease to wait change, as long as change the circuit design on the module printed circuit board (PCB) 32 and wash plate again, do not need die sinking again to change the leadframe design of encapsulation, therefore the elasticity in the increase design is more saved the design alteration cost.
Fig. 4 is the exploded view according to optical mouse of the present invention, button and idler wheel mechanism 461 are independent of beyond the COB module 30, for example be arranged on the mouse base 46, push button signalling that operation push-button and idler wheel mechanism 461 produce and roller signal are by winding displacement 462, deliver to the input end 328 of module printed circuit board (PCB) 32, module chip 42 carries out computing according to mouse moving information and roller, push button signalling, and the USB cable 48 output mouse control signals that connect via output terminal 326 are given main frame at last.With reference to Fig. 3 and Fig. 4, in the present embodiment, light trap 36 is used for fixing and keeps distance and the relativeness between lens 40 and module chip 42, the light source component 44, housing 38 covers and fixedly light trap 36 and lens 40, with embedded hole 322 default on the trip 382 chimeric module printed circuit board (PCB)s 32.In other embodiments, also can on light trap 36, trip be set, perhaps can chimeric mutually fitting apparatus and mechanism, for example replacement trip 382 such as slide rail, screw and embedded hole 322 with other.After 30 combinations of COB module are finished,, cooperate module seat 464 to be fixed on the mouse base 46 with the double-screw bolt 465 on the screw 50 sealed mouse bases 46.
Existing optical mouse is only integrated optical module, mouse controller is still in addition to be welded on the main printed circuit board with passive device with chip independently and realizes, roller and press button mechanism also are arranged on this main printed circuit board, therefore in a single day mouse designs person will adjust the mouse external form, change the words of the position of roller and button, just must wash plate again and change circuit on the main printed circuit board, when assembling, also must cooperate key position, roller position and the accurate contraposition of light path simultaneously, optical mouse is correctly worked.The optical mouse of present embodiment is owing to be incorporated into lens 40 and mouse controller in the COB module 30, and button and idler wheel mechanism 461 independently are arranged on the mouse base 46, mouse designs person can freely adjust the relativeness of 463 of button and idler wheel mechanism 461 and light holes, also can freely change the shape and the size of mouse base 46, as long as light hole 463 can be passed in the path of COB module 30 bright dippings, degree of freedom height, the contraposition of change design require low.The COB module that the present invention proposes promptly has complete optical mouse function after connecting PC cable and button and roller signal, more saves manpower and man-hour than case technology before each in the actual production.
Fig. 5 is the side view of COB module second embodiment of the present invention; module chip 42 and light source component 44 are welded in module printed circuit board (PCB) 32; light trap 54 has the function of resistance light and protection lens 55 concurrently; being provided with inserted structure 542 and 544 supplies lens 40 chimeric; form COB module 50; the light that light source component 44 provides passes light trap 54, reflects the light hole that passes mouse base 46 via lens 40, and the light that diffusion or scattering are returned sees through lens 40 again and images on the module chip 52.In the present embodiment, light trap 54 is equivalent to light trap 36 and the housing 38 of the embodiment of integration map 3, therefore reduces spare part.
Fig. 6 is the side view of COB module the 3rd embodiment of the present invention, lens 65 chimeric module printed circuit board (PCB)s 32 in the COB module 60 and fix light trap 64, two openings of light trap 64 are aimed at module chip 42 and the light source component 44 that is welded in module printed circuit board (PCB) 32 respectively, and the light of launching for light source component 44 passes through.In the present embodiment, lens 65 are equivalent to lens 40 and the housing 38 of the embodiment of integration map 3, therefore reduce spare part.
Fig. 7 is the synoptic diagram of COB module the 4th embodiment of the present invention, module chip 42 and light source component 44 are welded in module printed circuit board (PCB) 32, lens 74 chimeric module printed circuit board (PCB)s 32, form COB module 70, the part of lens 74 contiguous module chips 42, its surface coated has shading layer 745, be used for replacing the function of light trap in the previous embodiment, the light that light source component 44 provides reflects the light hole that passes mouse base 46 via lens 74, and the light that diffusion or scattering are returned sees through lens 74 again and images on the module chip 42.In the present embodiment, not only lens 74 are equivalent to lens 40 and the housing 38 of the embodiment of integration map 3, and reduce independently light trap 36.In other embodiments, also can on the surface of lens 74 contiguous light source components 44, be coated with shading layer, go out direction of light to adjust light source component 44.
The above only is the schematic embodiment of the present invention, is not in order to limit scope of the present invention.Any those skilled in the art, equivalent variations of having done under the prerequisite that does not break away from design of the present invention and principle and modification all should belong to the scope of protection of the invention.
Claims (20)
1. the COB module of an optical mouse is characterized in that, described COB module comprises:
The module printed circuit board (PCB);
The chip that contains inductor circuit is welded in this module printed circuit board (PCB) with the COB structure;
Light source component is welded in this module printed circuit board (PCB);
Lens are aimed at this chip that contains inductor circuit and this light source component; And
Passive device is welded on this module printed circuit board (PCB);
Wherein, controller circuitry is incorporated on this chip that contains inductor circuit, or is welded on the chip of this module printed circuit board (PCB) at another.
2. COB module according to claim 1 is characterized in that this light source component comprises LED.
3. COB module according to claim 1 is characterized in that, also comprises lighttight light trap, and it has two openings and aims at this chip that contains inductor circuit and this light source component respectively.
4. COB module according to claim 3 is characterized in that these lens are entrenched in this light trap.
5. COB module according to claim 3 is characterized in that, these lens are entrenched on this module printed circuit board (PCB).
6. COB module according to claim 1 is characterized in that, comprises that also housing covers this lens, and has cutting groove and pass through by light.
7. COB module according to claim 1 is characterized in that, this contains on the chip of inductor circuit and the same one side that this light source component is welded in this module printed circuit board (PCB).
8. COB module according to claim 1 is characterized in that, contiguous this chip place of containing inductor circuit of these lens is coated with shading layer.
9. COB module according to claim 1 is characterized in that, this module printed circuit board (PCB) comprises that also an output terminal provides this a COB module and an external host communication.
10. COB module according to claim 1 is characterized in that, this module printed circuit board (PCB) comprises that also an input end is for the push button signalling or the roller signal that receive this optical mouse.
11. an optical mouse is characterized in that, described optical mouse comprises:
The mouse base has light hole;
Button and idler wheel mechanism are on this mouse base;
The COB module, on this mouse base, this COB module comprises:
The module printed circuit board (PCB);
The chip that contains inductor circuit is welded in this module printed circuit board (PCB) with the COB structure;
Light source component is welded in this module printed circuit board (PCB);
Lens are aimed at this chip that contains inductor circuit and this light source component; And
Passive device is welded on this module printed circuit board (PCB);
Wherein, controller circuitry is incorporated on this chip that contains inductor circuit, or is welded on the chip of this module printed circuit board (PCB) at another; And
Winding displacement connects this button and idler wheel mechanism and this module printed circuit board (PCB).
12. optical mouse according to claim 11 is characterized in that, comprises that also chimeric mechanism is fixed on this COB module on this mouse base.
13. optical mouse according to claim 11 is characterized in that, this module printed circuit board (PCB) has output terminal, for output mouse control signal.
14. optical mouse according to claim 11 is characterized in that, this light source component comprises LED.
15. optical mouse according to claim 11 is characterized in that, also comprises lighttight light trap, it has two openings and aims at this chip that contains inductor circuit and this light source component respectively.
16. optical mouse according to claim 15 is characterized in that, these lens are entrenched in this light trap.
17. optical mouse according to claim 15 is characterized in that, these lens are entrenched on this module printed circuit board (PCB).
18. optical mouse according to claim 11 is characterized in that, comprises that also housing covers this lens, and has cutting groove and pass through by light.
19. optical mouse according to claim 11 is characterized in that, this contains on the chip of inductor circuit and the same one side that this light source component is welded in this module printed circuit board (PCB).
20. optical mouse according to claim 11 is characterized in that, contiguous this chip place of containing inductor circuit of these lens is coated with shading layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810184180A CN101751154A (en) | 2008-12-16 | 2008-12-16 | COB module of optical mouse and optical mouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810184180A CN101751154A (en) | 2008-12-16 | 2008-12-16 | COB module of optical mouse and optical mouse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101751154A true CN101751154A (en) | 2010-06-23 |
Family
ID=42478199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810184180A Pending CN101751154A (en) | 2008-12-16 | 2008-12-16 | COB module of optical mouse and optical mouse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101751154A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107920588A (en) * | 2015-08-14 | 2018-04-17 | 菲利普莫里斯生产公司 | Electrically operated smoking apparatus comprising the compact systems for the smoking product in identification device |
-
2008
- 2008-12-16 CN CN200810184180A patent/CN101751154A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107920588A (en) * | 2015-08-14 | 2018-04-17 | 菲利普莫里斯生产公司 | Electrically operated smoking apparatus comprising the compact systems for the smoking product in identification device |
| US11166494B2 (en) | 2015-08-14 | 2021-11-09 | Philip Morris Products S.A. | Electrically operated smoking device including a compact system for identifying smoking articles in the device |
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Open date: 20100623 |