CN110007379A - Optical lens mould group and forming method thereof - Google Patents
Optical lens mould group and forming method thereof Download PDFInfo
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- CN110007379A CN110007379A CN201910318904.1A CN201910318904A CN110007379A CN 110007379 A CN110007379 A CN 110007379A CN 201910318904 A CN201910318904 A CN 201910318904A CN 110007379 A CN110007379 A CN 110007379A
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- substrate
- optical cement
- film layer
- face
- optical
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- 230000003287 optical effect Effects 0.000 title claims abstract description 182
- 238000000034 method Methods 0.000 title claims abstract description 53
- 239000000758 substrate Substances 0.000 claims abstract description 107
- 239000004568 cement Substances 0.000 claims abstract description 98
- 238000000605 extraction Methods 0.000 claims description 50
- 238000012545 processing Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 description 16
- 239000011521 glass Substances 0.000 description 13
- 238000004140 cleaning Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000007711 solidification Methods 0.000 description 5
- 230000008023 solidification Effects 0.000 description 5
- 238000005530 etching Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229920002120 photoresistant polymer Polymers 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 2
- 238000001259 photo etching Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- NPNMHHNXCILFEF-UHFFFAOYSA-N [F].[Sn]=O Chemical compound [F].[Sn]=O NPNMHHNXCILFEF-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- JYMITAMFTJDTAE-UHFFFAOYSA-N aluminum zinc oxygen(2-) Chemical compound [O-2].[Al+3].[Zn+2] JYMITAMFTJDTAE-UHFFFAOYSA-N 0.000 description 1
- -1 because This Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- CATSNJVOTSVZJV-UHFFFAOYSA-N heptan-2-one Chemical compound CCCCCC(C)=O CATSNJVOTSVZJV-UHFFFAOYSA-N 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 238000010068 moulding (rubber) Methods 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0012—Arrays characterised by the manufacturing method
- G02B3/0031—Replication or moulding, e.g. hot embossing, UV-casting, injection moulding
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
A kind of optical lens mould group of the invention and forming method thereof, the following steps are included: providing a substrate, substrate has the first face and second face opposite with the first face, middle film layer is formed on first face, middle film layer part covers the first face of the substrate, and middle film layer includes at least and draws unit；And optical cement is formed on substrate and middle film layer, there is groove, the bottom-exposed of groove at least partly draws unit on optical cement.The present invention is realized can form middle film layer between optical cement and substrate, and so as to the substrate to optical lens mould group, whether breakage can be detected, and also optimize the structure of optical lens mould group.
Description
Technical field
The present invention relates to optical technical field, in particular to a kind of optical lens mould group and forming method thereof.
Background technique
With the fast development of imaging technique, optical lens mould group is widely used in multiple fields, such as digital camera, intelligence
Fields and the rapid field of face identification of developed recently such as energy mobile phone.In recognition of face equipment, the Image Acquisition of the equipment
Unit carries out picture acquisition to collected object under the irradiation of laser source by optical lens mould group and still works as optical lens
When the glass substrate of mould group occurs damaged, the laser that laser source is issued can project from breakage and shine directly into collected pair
As on (usually people), so that collected object is by laser hazard.
In order to solve this problem, an ito film layer is formd backwards to the side of optical cement in glass substrate, the ito film layer
Whether the glass substrate that the control system that recognition of face is equipped detects optical lens mould group is damaged, and in glass base
Laser source is closed when plate breakage, collected object is damaged to avoid the laser that laser source is issued, however, the structure is deposited
In limitation.
Summary of the invention
It, can be with by middle film layer one of the objects of the present invention is to provide a kind of optical lens mould group and forming method thereof
Side of the substrate towards optical cement is set, to optimize the structure of optical lens mould group.
In order to solve the above technical problem, the present invention provides a kind of forming methods of optical lens mould group, including following step
It is rapid:
A substrate is provided, the substrate has the first face and second face opposite with the first face, shape on first face
At there is middle film layer, the middle film layer part covers the first face of the substrate, and the middle film layer is included at least and drawn
Unit；And
Optical cement is formed on the substrate and middle film layer, and there is groove, the bottom of the groove on the optical cement
At least partly described extraction unit of exposure.
Optionally, optical cement is covered on the substrate, and the optical cement is limited between mold and the substrate, institute
State mold has bulge-structure on the side towards first face, and the bulge-structure is opposite with the extraction unit to be set
It sets, to form at least partly described optical cement for drawing unit of exposure.
Further, the mold includes die substrate and shading optical cement, and the shading optical cement is formed in the mould
Have on substrate, the shading optical cement has bulge-structure towards the side of the substrate, and the bulge-structure has light-proofness.
Further, the shape of the bulge-structure cross section is identical as the extraction shape of unit.
Further, on the substrate before covering optical cement further include:
Light shield layer is formed on second face, the light shield layer part covers the second face of the substrate, the shading
Layer is oppositely arranged with the extraction unit.
Further, the shape of the light shield layer is identical as the extraction shape of unit.
Further, further comprising the steps of after the optical cement being limited between mold and the substrate:
Curing process is carried out to the optical cement by the way of ultraviolet curing, to solidify on first face of substrate
Optical cement；
Remove the mold；
The light shield layer is removed, and the optical cement is cleaned, at least part of extraction unit of exposure；With
And
Sliver processing is executed to the substrate and optical cement, separation forms optical lens mould group.
Further, the substrate includes sliver area and is distinguished by the sliver every the multiple optical lens mould groups limited
Area is each formed with extraction unit in the area each optical lens Mo Zu in first face.
Further, the middle film layer includes transparency conducting layer.
The present invention also provides a kind of optical lens mould groups, comprising:
Substrate；
Middle film layer is formed on the substrate, and the middle film layer part covers the substrate, and the middle film layer
Including at least extraction unit；And
Optical cement is formed on the substrate and middle film layer, has groove, the bottom of the groove on the optical cement
At least partly described extraction unit of exposure.
Compared with prior art, the invention has the following advantages:
A kind of optical lens mould group of the invention and forming method thereof forms at least partly described extraction of exposure on substrate
The optical cement of unit, middle film layer can be formed between optical cement and substrate by realizing, so as to optical lens mould group
Substrate whether breakage can be detected, also optimize the structure of optical lens mould group, also make optical lens mould group can be with
For in face identification device.
Further, by improving mold, that is, increase bulge-structure in a mold, the bulge-structure has shading
Property, meanwhile, the bulge-structure is oppositely arranged with the extraction unit, is not only reduced and is located at the extraction unit and bulge-structure
Between the amount of optical cement also to be limited between extraction unit and the bulge-structure in ultraviolet curing process
Optical cement keeps liquid condition, so that can be easy to be removed in the cleaning process to the optical cement.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of optical lens；
Fig. 2 is a kind of flow diagram of the forming method of optical lens mould group of one embodiment of the invention；
Fig. 3 a-3g is the structural representation of each step in a kind of forming process of optical lens mould group of one embodiment of the invention
Figure.
Description of symbols:
In Fig. 1:
10- glass substrate；20-ITO weld pad；30- optical cement；
In Fig. 3 a-3g:
100- substrate；The area 100a- optical lens Mo Zu；100b- sliver area；The first face 101-；The second face 102-；
210- draws unit；
300- light shield layer；
400- optical cement；410- groove；
500- mold；510- die substrate；520- shading optical cement；521- camera lens model；522- bulge-structure.
Specific embodiment
As stated in the background art, an ito film layer is formd there are limitation backwards to the side of optical cement in glass substrate, because
This, glass substrate is arranged in towards on the side of optical cement in ito film layer by inventor, and is prepared by the following method wafer scale light
It learns camera lens (WLO), specific as follows: as shown in Figure 1, firstly, provide a circular glass substrate 10, shape on the glass substrate 10
At there is ito film layer, the ito film layer includes at least two ITO weld pads (pad) 20；Then, have in above-mentioned glass substrate 10
One layer of optical cement 30 is covered on the side of ito film layer；Then, the optical cement 30 is pressed using mold；Then, pass through
UV (ultraviolet light) solidifies and/or the mode of heat baking carries out curing process to above-mentioned optical cement 30；Finally, removing the mold.
Since all optical lens mould groups of wafer scale optical lens in above-mentioned technique are prepared by integral forming process, make
It obtains between the optical cement after the ito film layer is entirely confined in glass substrate and solidifies, can not be detected at all, so that glass
The situation of substrate can not be learnt.
In order to solve this problem, a kind of optical lens mould group and forming method thereof of the invention is formed sudden and violent on substrate
At least partly described optical cement for drawing unit of dew, middle film layer can be formed between optical cement and substrate by realizing, thus
Can substrate to optical lens mould group whether breakage can be detected, also optimize the structure of optical lens mould group, also make
Obtaining optical lens mould group can be used in face identification device.
Further, by improving mold, that is, increase bulge-structure in a mold, the bulge-structure has shading
Property, meanwhile, the bulge-structure is oppositely arranged with the extraction unit, is not only reduced and is located at the extraction unit and bulge-structure
Between the amount of optical cement also to be limited between extraction unit and the bulge-structure in ultraviolet curing process
Optical cement keeps liquid condition, so that can be easy to be removed in the cleaning process to the optical cement.
A kind of optical lens mould group of the invention and forming method thereof is carried out more below in conjunction with flow chart and schematic diagram
Detailed description, which show the preferred embodiment of the present invention, it should be appreciated that those skilled in the art can modify and retouch herein
The present invention stated, and still realize advantageous effects of the invention.Therefore, following description should be understood as art technology
Personnel's is widely known, and is not intended as limitation of the present invention.
The present invention is more specifically described by way of example referring to attached drawing in the following passage.According to following explanation, the present invention
The advantages of and feature will become apparent from.It should be noted that attached drawing is all made of very simplified form and uses non-accurate ratio,
Only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.
As shown in Fig. 2, the method includes following steps the present invention provides a kind of forming method of optical lens mould group
It is rapid:
Step S21: providing a substrate, and the substrate has the first face and second face opposite with the first face, and described the
Middle film layer is formed on one side, the middle film layer part covers the first face of the substrate, and the middle film layer at least wraps
Include extraction unit；
Step S22: forming optical cement on the substrate and middle film layer, has groove on the optical cement, described recessed
At least partly described extraction unit of the bottom-exposed of slot.
Illustrate the optical lens mould group and forming method thereof in the present embodiment below in conjunction with Fig. 2-3g.Wherein Fig. 3 a-3g is
The structural schematic diagram of each step in a kind of forming process of optical lens mould group of the present embodiment.It should be noted that this method
In the diagram of each step illustrate only two optical lens mould groups, still, be not that only there are two optical lens mould groups, splitting
Before piece, the quantity of the optical lens mould group formed on substrate is configured according to actual needs, and above-mentioned diagram is only used for pair
The aid illustration of optical lens mould group forming process.
In the forming method of the embodiment of the present invention optical lens mould group, as shown in Figure 3a, step 21 is first carried out, mentions
For a substrate 100, the substrate 100 includes sliver area 100b and separates the multiple optical frames limited by the sliver area 100b
The area Tou Mozu 100a, the substrate 100 have the first face 101 and second face 102 opposite with the first face 101, the centre
Film layer, which includes at least, draws unit 210, e.g. includes drawing unit 210 and second part (not shown), described the
Middle film layer is each formed in 101 each optical lens Mo Zu area 100a on one side, the middle film layer part covers the base
First face 101 of plate 100.Specifically it can be said that being respectively formed in each optical lens Mo Zu area 100a in first face 101
Have and draws unit 210.
The substrate 100 is, for example, circular substrate, and further, the substrate 100 is, for example, circular glass substrate,
E.g. formed by translucent material.The middle film layer includes e.g. conductive layer, specifically, the material of the middle film layer is
Nonmetallic materials, for example, the gold such as tin indium oxide, indium oxide, zinc oxide, zinc oxide aluminum, tin oxide, tin-antiomony oxide or tin oxide fluorine
Belong to oxide；Or the conductivity types organic polymer such as electric silica gel；Or the elemental crystals such as graphite, polysilicon.Above-mentioned nonmetallic materials
Etching performance be better than metal etching performance, the available preferable figure of appearance.The material of the middle film layer is simultaneously unlimited
In for above-mentioned nonmetallic materials, it can change according to actual needs, can also be photosensitive material, compression-resistant material, screening
Luminescent material etc. draws unit 210 as long as can be formed.The extraction unit 210 includes but is not limited to several weld pads,
E.g. two weld pads, the shape for drawing unit 210 are, for example, square.Optical lens Mo Zu area 100a can be with shape
It is, for example, at least one in the quantity of the optical lens of each optical lens Mo Zu area 100a at several optical lens.Work as institute
When stating optical lens Mo Zu area 100a one optical lens of formation, the optical lens can be a convex lens lens head or one
Concavees lens camera lens etc.；When optical lens Mo Zu area 100a forms more than two optical lens, the optical lens can be with
It is more than two identical optical lens, such as is concavees lens camera lens or is convex lens lens head, is also possible to two or more
Different optical lens, such as a part are concavees lens camera lenses, and a part is convex lens lens head etc..
It in the present embodiment, is, for example, to need to form 3 spaced convex lens in optical lens Mo Zu area 100a
Lens head.The material of the middle film layer is tin indium oxide (ITO), and the extraction unit 210 is connected to second part, described
When drawing 210 external circuits of unit, the extraction unit 210 is electrically connected with second part, to detect the extraction unit 210
With the resistance value of second part institute built-up circuit, to judge whether the substrate has damaged (that is, when substrate damage, detected
Circuit resistance value it is abnormal).In other embodiments, since its effect is different, the extraction unit 210 can not with second part
Connection.
Then step 22 is executed, optical cement 400 is formed on the substrate 100, there is groove on the optical cement 400
410, at least partly described extraction unit 210 of the bottom-exposed of the groove 410.This step realize optical cement and substrate it
Between can form middle film layer, so as to the substrate to optical lens mould group, whether breakage can be detected, and also be optimized
The structure of optical lens mould group.
Specific step is as follows for this step:
As shown in Figure 3b, firstly, forming light shield layer 300 on second face 102,300 part of the light shield layer covering
The substrate 100, the light shield layer 300 are oppositely arranged with the extraction unit 210.That is, the extraction unit 210 with
Light shield layer 300 is least partially overlapped along the thickness direction of the substrate 100, it is preferred that the extraction unit 210 and light shield layer
300 along the substrate 100 thickness direction be overlapped.
300 part of light shield layer covers the second face 102 of the substrate 100, and the material of the light shield layer 300 can be
Black light resistance or crome metal etc., specifically with no restrictions, as long as lighttight material.The light shield layer 300 can use
Conventional photo etching process is formed, such as: it is initially formed light-shielding film layer；Then one layer of photoresist is prepared on the light-shielding film layer；
Figure is formed on the photoresist using photoetching process；Using etching technics, by the pattern transfer on the photoresist to institute
It states on light shield layer 300.The shape of the light shield layer 300 is identical as the extraction shape of unit 210.The light shield layer 300 exists
For avoiding ultraviolet light from entering in optical cement 400 by it to the extraction unit 210 in subsequent ultraviolet curing process
The optical cement 400 of top carries out curing process.
As shown in Figure 3c, secondly, optical cement 400 is covered on the substrate 100 and middle film layer, by the optical cement
400 are limited between mold 500 and the substrate 100 and middle film layer, and the mold 500 is, for example, including die substrate 510
With the shading optical cement 520 after solidification, the shading optical cement 520 after solidification is formed on the die substrate 510, solidification
The shading optical cement 520 afterwards has camera lens model 521 and bulge-structure 522 towards the side of the substrate 100, described convex
Structure 522 is played for forming groove above the extraction unit 210, the bulge-structure 522 is located at the camera lens model 521
Around, the camera lens model 521 is used to form the optical lens in optical lens mould group.The bulge-structure 522 with it is described
Unit 210 is drawn to be oppositely arranged.That is, in pressing, the bulge-structure 522 and the extraction unit 210 at least portion
Point overlapping, it is preferred that the bulge-structure 522 is Chong Die with the extraction unit 210, at this point, the bulge-structure 522 with it is described
The amount for drawing the only optical cement 400 between unit 210 is less, and 210 top of unit is drawn in removal when being conducive to subsequent cleaning
Optical cement 400.
The material of the shading optical cement 520 includes e.g. light screening material and optical cement, and the light screening material 520 is for example
It is shading dyes comprising carbon dust, metal powder etc..The shading optical cement 520 has light-proofness, because of the protrusion knot
Structure 522 is a part of shading optical cement 520, and therefore, bulge-structure 522 has light-proofness.The optical cement is, for example, common
Optical cement, material includes resin.The bulge-structure 522 is, for example, column structure, the cross section of the bulge-structure 522
Shape (i.e. vertically and the shape in the direction of the substrate thickness) it is identical as the extraction shape of unit 210.The protrusion
Structure 522 is not construed as limiting along the length of 100 thickness direction of substrate, can be set according to actual needs.
As shown in Figure 3d, then, curing process is carried out to the optical cement 400 by the way of ultraviolet curing, with solid
Change the substrate 100 with the optical cement 400 on second part.
Specifically, from 102 side of the second face of the substrate 100 to the optical cement by the way of ultraviolet curing
400 carry out curing process, at this point, the bulge-structure 522 and the light shield layer 300 will be limited in extraction unit 210 with it is convex
The optical cement 400 risen between structure 522 keeps liquid condition, and has cured and do not hidden by light shield layer 300 on first face 101
The optical cement 400 of gear.It is found that since the bulge-structure 522 on mold makes cured optical cement 400 on drawing unit 210
Side is formed with groove.In addition, this implementation is only optimized mold, employed in the covering of optical cement and solidification process
Equipment is identical as equipment used in the covering of optical cement in traditional handicraft and solidification process, in this way, without increasing new equipment,
Process complexity can be reduced, and is easily achieved.
In this step, the UV intensity of UV (ultraviolet light) curing mode is, for example, 9~22mw (milliwatt), UV time for exposure example
For example 360~720s (second)；The temperature of hot roasting mode is, for example, 150~220 DEG C, and baking time is, for example, 3~5 hours.
As shown in Figure 3 e, later, the mold 500 is removed.
As illustrated in figure 3f, then, the light shield layer 300 is removed, and the optical cement 400 is cleaned, to be exposed to
Unit 210 is drawn described in small part.
Specifically, being, for example, that acetone removes the light shield layer 300 using the first solvent, the work of the light shield layer 300 is removed
Skill includes:.It is, for example, that heptanone cleans the optical cement 400 using the second solvent, the cleaning process includes:.At this point,
Liquid optical cement 400 above the extraction unit 210 is easy to be cleaned out, and the groove 410 simultaneously exposes at least
The partial extraction unit 210, and there is no have any impact to the optical cement 400 having cured to above-mentioned cleaning process, that is,
Optical cement 400 above its second part to the substrate 100 and middle film layer is not affected, after later separation
The optical characteristics of optics rubber moulding group does not impact.
As shown in figure 3g, while Fig. 3 a is please referred to, finally, sliver processing is executed to the substrate 100 and optical cement 400,
Separation forms optical lens mould group.Specifically, executing sliver to the substrate 100 and optical cement 400 along the sliver area 100b
Processing, separation form optical lens mould group.
In this step, after sliver processing, by adjacent optical lens mould splits on 100 thickness direction of substrate
From, that is, the optical cement 400 of adjacent optical lens mould group is separated from each other, while by the substrate of adjacent optical lens mould group
100 are separated from each other.
As shown in figure 3g, the present embodiment additionally provides a kind of optical lens mould group, is prepared by the above method, the light
Learning lens module is, for example, to be applied to face identification device, the optical lens mould group include substrate 100, optical cement 400 and in
Between film layer, the middle film layer is formed on the substrate 100, and the middle film layer part covers the substrate 100, it is described in
Between film layer include at least and draw unit 210, e.g. include drawing unit 210 and second part (not shown), the light
It learns glue 400 to be formed on the substrate 100 and the middle film layer, there is groove 410, the groove on the optical cement 400
410 expose at least partly described extraction unit 210, that is, it is by intermediate coat that the optical cement 400, which is formed in the substrate 100,
On the part of layer covering and the second part of middle film layer.It is straight that it carries out the optical lens mould group and various structures
The physical connection or electric connection connect, optimizes the structure of optical lens mould group, expands the application of optical lens mould group
Range.
In the present embodiment, the middle film layer is, for example, transparent conductive film layer, the extraction unit 210 and second part
Connection, the extraction unit 210 are, for example, including several weld pads, and e.g. two, which exposes part
The extraction unit 210.The optical lens mould group is, for example, to be electrically connected with the detecting unit in the face identification device,
Specifically, the unit 210 of drawing in the optical lens mould group is, for example, and the detecting unit electricity in the face identification device
Property connection so that detecting unit can with the submount of detecting real-time to optical lens mould group with the presence or absence of breakage problem, thus
The submount breakage for avoiding optical lens mould group injures measurand bring, which also improves product competitiveness.
In summary, a kind of optical lens mould group and forming method thereof of the invention forms exposure at least portion on substrate
Divide the optical cement for drawing unit, middle film layer can be formed between optical cement and substrate by realizing, so as to light
Whether breakage can be detected the substrate of lens module, also optimize the structure of optical lens mould group, also make optical frames
Head mould group can be used in face identification device.
Further, by improving mold, that is, increase bulge-structure in a mold, the bulge-structure has shading
Property, meanwhile, the bulge-structure is oppositely arranged with the extraction unit, is not only reduced and is located at the extraction unit and bulge-structure
Between the amount of optical cement also to be limited between extraction unit and the bulge-structure in ultraviolet curing process
Optical cement keeps liquid condition, so that can be easy to be removed in the cleaning process to the optical cement.
In addition, it should be noted that, unless stated otherwise or point out, the otherwise term " first " in specification, "
Two " description is used only for distinguishing various components, element, step etc. in specification, without being intended to indicate that various components, member
Logical relation or ordinal relation between element, step etc..
It is understood that although the present invention has been disclosed in the preferred embodiments as above, above-described embodiment not to
Limit the present invention.For any person skilled in the art, without departing from the scope of the technical proposal of the invention,
Many possible changes and modifications all are made to technical solution of the present invention using the technology contents of the disclosure above, or are revised as
With the equivalent embodiment of variation.Therefore, anything that does not depart from the technical scheme of the invention are right according to the technical essence of the invention
Any simple modifications, equivalents, and modifications made for any of the above embodiments still fall within the range of technical solution of the present invention protection
It is interior.
Claims (10)
1. a kind of forming method of optical lens mould group, which comprises the following steps:
A substrate is provided, the substrate has the first face and second face opposite with the first face, is formed on first face
Middle film layer, the middle film layer part covers the first face of the substrate, and the middle film layer includes at least and draws unit；
And
Optical cement is formed on the substrate and middle film layer, and there is groove, the bottom-exposed of the groove on the optical cement
At least partly described extraction unit.
2. forming method as described in claim 1, which is characterized in that optical cement is covered on the substrate, by the optics
Glue is limited between mold and the substrate, and the mold has bulge-structure on the side towards first face, described
Bulge-structure is oppositely arranged with the extraction unit, to form at least partly described optical cement for drawing unit of exposure.
3. forming method as claimed in claim 2, which is characterized in that the mold includes die substrate and shading optical cement,
The shading optical cement is formed on the die substrate, and the shading optical cement has protrusion knot towards the side of the substrate
Structure, the bulge-structure have light-proofness.
4. forming method as claimed in claim 3, which is characterized in that the shape and the extraction of the bulge-structure cross section
The shape of unit is identical.
5. forming method as claimed in claim 2, which is characterized in that on the substrate before covering optical cement further include:
Form light shield layer on second face, the light shield layer part covers the second face of the substrate, the light shield layer with
The extraction unit is oppositely arranged.
6. forming method as claimed in claim 5, which is characterized in that the shape of the light shield layer and the shape for drawing unit
Shape is identical.
7. forming method as claimed in claim 5, which is characterized in that by the optical cement be limited in mold and the substrate it
Between after, it is further comprising the steps of:
Curing process is carried out to the optical cement by the way of ultraviolet curing, to solidify the optics on first face of substrate
Glue；
Remove the mold；
The light shield layer is removed, and the optical cement is cleaned, at least part of extraction unit of exposure；And
Sliver processing is executed to the substrate and optical cement, separation forms optical lens mould group.
8. forming method as described in claim 1, which is characterized in that the substrate includes sliver area and by the sliver area
Separate the area multiple optical lens Mo Zu limited, it is single that extraction is each formed in the area each optical lens Mo Zu in first face
Member.
9. forming method as described in claim 1, which is characterized in that the middle film layer includes transparency conducting layer.
10. a kind of optical lens mould group characterized by comprising
Substrate；
Middle film layer is formed on the substrate, and the middle film layer part covers the substrate, and the middle film layer is at least
Including drawing unit；And
Optical cement is formed on the substrate and middle film layer, has groove, the bottom-exposed of the groove on the optical cement
At least partly described extraction unit.
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| CN201910318904.1A CN110007379A (en) | 2019-04-19 | 2019-04-19 | Optical lens mould group and forming method thereof |
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Application publication date: 20190712 |