CN100355079C - Image sensor and sealing method thereof - Google Patents
Image sensor and sealing method thereof Download PDFInfo
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- CN100355079C CN100355079C CNB031363768A CN03136376A CN100355079C CN 100355079 C CN100355079 C CN 100355079C CN B031363768 A CNB031363768 A CN B031363768A CN 03136376 A CN03136376 A CN 03136376A CN 100355079 C CN100355079 C CN 100355079C
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- sheet metal
- adhesive body
- several
- upper strata
- sheet
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73251—Location after the connecting process on different surfaces
- H01L2224/73265—Layer and wire connectors
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- Solid State Image Pick-Up Elements (AREA)
Abstract
The present invention relates to an image sensor and a package method, which is proposed in order to provide a sensor with high package reliability, good radiation effect, high fixed stability, convenient lead-wire bonding and high good rate for products, and a package method thereof. The image sensor comprises a lower and an upper layers of metal sheet groups, a glue packing body covering the lower and the upper layers of metal sheet groups, an image sensing wafer, a plurality of conducting wires, and a euphotic layer, the lower layer of metal sheet groups comprises a plurality of lower layers of metal which is provided with the upper and the lower surfaces and is mutually arranged at intervals, and an intermediate board containing the image sensing wafer; the upper layer of metal sheet groups comprises a plurality of upper layers of metal sheets which is provided with the upper and the lower surfaces and are correspondingly overlapped on the lower layers of metal sheets. The package method comprises the following steps that the lower layer of metal sheet groups comprising the lower layers of metal sheets which are mutually arranged at intervals and the intermediate board are provided, and the upper layer of metal sheet groups comprising the upper layer of metal sheets which are mutually arranged at intervals is provided; the glue packing body is formed; the image sensing wafer is arranged on the intermediate board; the conducting wires are provided for the lead-wire bonding, and the euphotic layer is arranged.
Description
Technical field
The invention belongs to sensor and method for packing thereof, particularly a kind of image sensor and method for packing thereof.
Background technology
As shown in Figure 1, known image sensor comprises substrate 10, flange layer 18, image sensing wafer 22, several wires 24 and photic zone 26.
The sheet metal 12 that substrate 10 is arranged by several spaces is formed, and several sheet metals 12 form first plate 14 and second plate 16 of differing heights.
Flange layer 18 is formed at substrate 10 peripheries and bottom surface, and itself and substrate 10 form disposal area 20, and top and the following of second plate 16 of several sheet metal 12 first plates 14 exposed by flange layer 18 respectively.
Image sensing wafer 22 is arranged in the disposal area 20 of flange layer 18 and substrate 10 formation.
Several wires 24 is electrically connected the top and image sensing wafer 22 of several sheet metal 12 first plates 14 respectively.
Photic zone 26 is arranged on the flange layer 18, to cover image sensing wafer 22.
Though known image sensor really can reach its creation purpose and effect, precisely because still there is following defective:
When 1, making, owing to sheet metal 12 must be bent into first plate 14 and second plate 16 of differing heights, will cause first plate 14 smooth inadequately, make when going between the bonding processing procedure, lead 24 can't successfully be followed on sheet metal 12, so that influence its yield.
Can't stamp out the bigger sheet metal of thickness 12 during 2, because of manufacturing, make second plate, 16 thin thickness of sheet metal 12, so in soldering (SMT) process, scolding tin can't be in the side climbing of sheet metal 12 second plates 16, so that have influence on the stability that packaging body is fixed in printed circuit board (PCB).
3, the bottom surface of image sensing wafer 22 is all sealed by flange layer 18, so failed better heat radiating effect.
Summary of the invention
The purpose of this invention is to provide a kind of image sensor and method for packing thereof that improves encapsulation reliability, good heat dissipation effect, raising fixing-stable degree, the bonding of being convenient to go between, improves the product yield.
Image sensor of the present invention comprises lower metal sheet group, upper strata sheet metal group, adhesive body, image sensing wafer, several wires and photic zone; Lower metal sheet group comprises that the lower metal sheet that arranges several spaces and contour correspondence be located at the intermediate plate between several lower metal sheets; Each lower metal sheet is provided with upper surface and lower surface; Intermediate plate is provided with upper surface and lower surface; Upper strata sheet metal group comprises the upper strata sheet metal that arrange several spaces; Each upper strata sheet metal is provided with the lower surface on upper surface and the corresponding upper surface that is stacked at the lower metal sheet; Adhesive body envelopes several lower metal sheets, intermediate plate and several upper strata sheet metals, and the upper surface of each upper strata sheet metal is exposed by adhesive body, and the lower surface of each lower metal sheet is exposed by adhesive body, and the upper and lower surface of intermediate plate is exposed by adhesive body; Adhesive body forms flange layer in the upper surface periphery of several upper strata sheet metals, so that itself and several upper strata sheet metal constitutes accommodation chamber; Image sensing wafer is arranged on the upper surface of intermediate plate and is positioned at accommodation chamber; Several wires is electrically connected the upper surface of image sensing wafer and upper strata sheet metal; Photic zone is covered on the adhesive body flange layer to cover image sensing wafer.
Image sensor package method of the present invention comprises the steps:
Step 1
Upper and lower layer sheet metal group is provided; Lower metal sheet group comprises that the lower metal sheet that arranges several spaces and contour correspondence be located at the intermediate plate between several lower metal sheets; Each lower metal sheet is provided with upper surface and lower surface, and intermediate plate is provided with upper surface and lower surface; Upper strata sheet metal group comprises the upper strata sheet metal that arrange several spaces, and each upper strata sheet metal is provided with upper surface and lower surface, and upper strata sheet metal lower surface is corresponding to be stacked on the upper surface of lower metal sheet.
Step 2
Form adhesive body and stick together several lower metal sheets, intermediate plate and several upper strata sheet metals with coating, and the upper surface of each upper strata sheet metal is exposed by adhesive body, the lower surface of each lower metal sheet is exposed by adhesive body, and the upper and lower surface of intermediate plate is exposed by adhesive body; Adhesive body forms flange layer in the upper surface periphery of several upper strata sheet metals, and makes itself and several upper strata sheet metal constitute accommodation chamber.
Image sensing wafer is provided and is arranged on the upper surface of intermediate plate and is positioned at accommodation chamber;
Step 4
Several wires is provided, and each lead is electrically connected the upper surface of image sensing wafer and upper strata sheet metal.
Step 5
Photic zone is provided and is covered on the flange layer of adhesive body, so that image sensing wafer is enveloped.
Wherein:
Adhesive body is industrial plastic material; Flange layer and adhesive body are one-body molded.
Photic zone is a transparent glass.
Adhesive body is industrial plastic material in the step 2; Flange layer and adhesive body are one-body molded.
Because image sensor of the present invention comprises upper and lower layer sheet metal group, form adhesive body, the image sensing wafer that is positioned at accommodation chamber, the several wires that constitutes the accommodation chamber flange layer and be covered on photic zone on the flange layer; Lower metal sheet group comprises the lower metal sheet of several spaces arrangements and the intermediate plate of bearing image sensing; Each lower metal sheet and intermediate plate are respectively equipped with upper and lower surface; Upper strata sheet metal group comprises the upper strata sheet metal that arrange several spaces, and each upper strata sheet metal is respectively equipped with upper surface and the corresponding lower surface that is stacked on the lower metal sheet upper surface; Adhesive body envelopes several upper and lower layer sheet metal and intermediate plates, and the upper and lower surface of each upper and lower layer sheet metal and the upper and lower surface of intermediate plate are exposed by adhesive body; Image sensing wafer is arranged at the upper surface of intermediate plate; Several wires is electrically connected the upper surface of image sensing wafer and upper strata sheet metal; Method for packing comprises provides upper and lower layer sheet metal group; Lower metal sheet group comprises lower metal sheet and the intermediate plate that arrange several spaces; Upper strata sheet metal group comprises the upper strata sheet metal that arrange several spaces; The upper strata sheet metal is with on the corresponding upper surface that is stacked at the lower metal sheet of its lower surface; Form and coat the adhesive body that sticks together several upper and lower layer sheet metals and intermediate plate, and the upper surface of each upper strata sheet metal, the lower surface of lower metal sheet and the upper and lower surface of intermediate plate are exposed by adhesive body; Image sensing wafer is provided and is arranged on the upper surface of intermediate plate and is positioned at accommodation chamber; Several wires is provided, and each lead is electrically connected the upper surface of image sensing wafer and upper strata sheet metal; Photic zone is provided and is covered on the flange layer of adhesive body.Several upper and lower layer sheet metals that constitute upper and lower layer sheet metal group are by two dull and stereotyped formation, and have evenness preferably, therefore, and the carrying out of its bonding operation of can being convenient to go between and can improve the encapsulation yield of product; The folded upper and lower layer sheet metal of establishing formed higher thickness, and therefore, when the image sensor soldering was on printed circuit board (PCB), scolding tin can be climbed on the sheet metal of upper strata by the lower metal sheet, made image sensor more firmly be fixed on the printed circuit board (PCB); Image sensing wafer is located on the upper surface of intermediate plate, and the lower surface of intermediate plate is exposed by adhesive body, thus the heat of image sensing wafer generation can be spread with heat radiation by the lower surface of intermediate plate, thus can reach better heat radiating effect.Not only improve encapsulation reliability, good heat dissipation effect, raising fixing-stable degree, and the bonding of being convenient to go between, improve the product yield, thereby reach purpose of the present invention.
Description of drawings
Fig. 1, be known image sensor structure schematic sectional view.
Fig. 2, for image sensor structure schematic sectional view of the present invention.
Fig. 3, be image sensor package method step 1 of the present invention, two schematic diagrames.
Fig. 4, be image sensor package method step 3 of the present invention, four schematic diagrames.
Embodiment
As shown in Figure 2, image sensor of the present invention comprises lower metal sheet group 3, upper strata sheet metal group 4, adhesive body 34, image sensing wafer 36, several wires 38 and photic zone 40.
Lower metal sheet group 3 comprises that the lower metal sheet 30 that arranges several spaces and contour correspondence be located at the intermediate plate 50 between several lower metal sheets; Each lower metal sheet 30 is for being provided with the flat board of upper surface 42 and lower surface 44, and the lower surface 44 of lower metal sheet 30 welds in soldering (SMT) mode by scolding tin 60 and is located on the printed circuit board (PCB) 58; Intermediate plate 50 is provided with upper surface 51 and lower surface 52.
Upper strata sheet metal group 4 comprises the upper strata sheet metal 32 that arrange several spaces; Each upper strata sheet metal 32 is for being provided with the flat board of upper surface 46 and lower surface 48, and the lower surface of upper strata sheet metal 32 48 is corresponding to be stacked on the upper surface 42 of lower metal sheet 30.
Photic zone 40 is a transparent glass, and it is covered on the flange layer 54 of adhesive body 34, uses covering image sensing wafer 36, and makes image sensing wafer 36 can see through photic zone 40 reception light signals.
Image sensor package method of the present invention comprises the steps:
Step 1
Upper and lower layer sheet metal group 3,4 is provided
As shown in Figure 3, lower metal sheet group 3 comprises that the lower metal sheet 30 that arranges several spaces and contour correspondence be located at the intermediate plate 50 between several lower metal sheets 30; Each lower metal sheet 30 is provided with upper surface 42 and lower surface 44, and intermediate plate 50 is provided with upper surface 51 and lower surface 52.
Upper strata sheet metal group 4 comprises the upper strata sheet metal 32 that arrange several spaces; Each upper strata sheet metal 32 is provided with upper surface 46 and lower surface 48, and sheet metal 32 lower surfaces 48 in upper strata are corresponding to be stacked on the upper surface 42 of lower metal sheet 30.
Step 2
Form adhesive body 34
As shown in Figure 3, with industrial plastic cement is that material forms the adhesive body 34 that several lower metal sheets 30, intermediate plate 50 and several upper strata sheet metals 32 are sticked together in coating by injection molding method, and the upper surface 46 of each upper strata sheet metal 32 is exposed by adhesive body 34, the lower surface 44 of each lower metal sheet 30 is exposed by adhesive body 34, and upper and lower surperficial 51,52 of intermediate plate 50 is exposed by adhesive body 34; Adhesive body 34 forms flange layer 54 in upper surface 46 peripheries of several upper strata sheet metals 32, and makes itself and several upper strata sheet metal 32 constitute accommodation chamber 56.
As shown in Figure 4, image sensing wafer 36 is provided and it is arranged on the upper surface 51 of intermediate plate 50, and be positioned at accommodation chamber 56.
Step 4
The lead-in wire bonding
Step 5
Photic zone 40 is set
The photic zone 40 that can be transparent glass is provided, and it is covered on the flange layer 54 of adhesive body 34, use covering image sensing wafer 36, receive the light signal so that image sensing wafer 36 can see through photic zone 40.
As mentioned above, the present invention has following advantage:
1, several upper and lower layer sheet metals 32,30 that constitute upper and lower layer sheet metal group 3,4 have upper and lower surperficial 42,44,46,48 flat board by two and form, and has evenness preferably, therefore, the carrying out of its bonding operation of can being convenient to go between and can improve the encapsulation yield of product.
2, the folded upper and lower layer sheet metal of establishing 32,30 formed higher thickness, therefore, when the image sensor soldering was on printed circuit board (PCB) 58, scolding tin 60 can be climbed on upper strata sheet metal 32 by lower metal sheet 30, and image sensor more firmly is fixed on the printed circuit board (PCB) 58.
3, image sensing wafer 36 is located on the upper surface 51 of intermediate plate 50, the lower surface 52 of intermediate plate 50 is exposed by adhesive body 34, so can make heat that image sensing wafer 36 produces by lower surface 52 diffusions of intermediate plate 50 with heat radiation, thereby can reach better heat radiating effect.
Claims (5)
1, a kind of image sensor, it comprises the sheet metal group, coat and to stick together the sheet metal group and form the several wires of the adhesive body that constitutes the accommodation chamber flange, the image sensing wafer that is positioned at accommodation chamber, electrical connection image sensing wafer and sheet metal group upper surface and be covered on the adhesive body flange layer to cover the photic zone of image sensing wafer; It is characterized in that described sheet metal group comprises lower metal sheet group and upper strata sheet metal group; Lower metal sheet group comprises that the lower metal sheet that arranges several spaces and contour correspondence be located at the intermediate plate between several lower metal sheets; Each lower metal sheet is provided with upper surface and lower surface; Intermediate plate is provided with upper surface and lower surface; Upper strata sheet metal group comprises the upper strata sheet metal that arrange several spaces; Each upper strata sheet metal is provided with the lower surface on upper surface and the corresponding upper surface that is stacked at the lower metal sheet; Adhesive body envelopes several lower metal sheets, intermediate plate and several upper strata sheet metals, and the upper surface of each upper strata sheet metal is exposed by adhesive body, and the lower surface of each lower metal sheet is exposed by adhesive body, and the upper and lower surface of intermediate plate is exposed by adhesive body; Adhesive body forms flange layer in the upper surface periphery of several upper strata sheet metals, so that itself and several upper strata sheet metal constitutes accommodation chamber; The image sensing wafer that is positioned at accommodation chamber is arranged on the upper surface of intermediate plate; Several wires is electrically connected the upper surface of image sensing wafer and upper strata sheet metal.
2, image sensor according to claim 1 is characterized in that described adhesive body is industrial plastic material; Flange layer and adhesive body are one-body molded.
3, image sensor according to claim 1 is characterized in that described photic zone is a transparent glass.
4, a kind of image sensor package method, it comprises the steps:
Step 1
The sheet metal group is provided;
Step 2
Form and cover the sheet metal group and form the adhesive body that constitutes the accommodation chamber flange layer;
Step 3
Image sensing wafer is provided and is positioned at accommodation chamber;
Step 4
Several wires is provided, and each lead is electrically connected image sensing wafer and sheet metal group;
Step 5
Photic zone is provided and is covered on the flange layer of adhesive body, so that image sensing wafer is enveloped;
It is characterized in that described step 1 provides upper and lower layer sheet metal group; Lower metal sheet group comprises that the lower metal sheet that arranges several spaces and contour correspondence be located at the intermediate plate between several lower metal sheets; Each lower metal sheet is provided with upper surface and lower surface, and intermediate plate is provided with upper surface and lower surface; Upper strata sheet metal group comprises the upper strata sheet metal that arrange several spaces, and each upper strata sheet metal is provided with upper surface and lower surface, and upper strata sheet metal lower surface is corresponding to be stacked on the upper surface of lower metal sheet; The adhesive body that forms in the step 2 coats and sticks together several lower metal sheets, intermediate plate and several upper strata sheet metals, and the upper surface of each upper strata sheet metal is exposed by adhesive body, the lower surface of each lower metal sheet is exposed by adhesive body, and the upper and lower surface of intermediate plate is exposed by adhesive body; Adhesive body forms flange layer in the upper surface periphery of several upper strata sheet metals, and makes itself and several upper strata sheet metal constitute accommodation chamber; The image sensing wafer that is positioned at accommodation chamber in the step 3 is arranged on the upper surface of intermediate plate; Several wires is electrically connected the upper surface of image sensing wafer and upper strata sheet metal in the step 4.
5, image sensor package method according to claim 4 is characterized in that adhesive body is industrial plastic material in the described step 2; Flange layer and adhesive body are one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031363768A CN100355079C (en) | 2003-06-03 | 2003-06-03 | Image sensor and sealing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031363768A CN100355079C (en) | 2003-06-03 | 2003-06-03 | Image sensor and sealing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1553511A CN1553511A (en) | 2004-12-08 |
| CN100355079C true CN100355079C (en) | 2007-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031363768A Expired - Fee Related CN100355079C (en) | 2003-06-03 | 2003-06-03 | Image sensor and sealing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100355079C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002100755A (en) * | 2000-08-18 | 2002-04-05 | Hynix Semiconductor Inc | Cmos image sensor and manufacturing method thereof |
| CN1359153A (en) * | 2000-12-11 | 2002-07-17 | 胜开科技股份有限公司 | packaged video image sensitive chip and peackaging method |
| JP2002368949A (en) * | 2001-05-23 | 2002-12-20 | Kingpak Technology Inc | Stacked package structure for image sensor |
-
2003
- 2003-06-03 CN CNB031363768A patent/CN100355079C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002100755A (en) * | 2000-08-18 | 2002-04-05 | Hynix Semiconductor Inc | Cmos image sensor and manufacturing method thereof |
| CN1359153A (en) * | 2000-12-11 | 2002-07-17 | 胜开科技股份有限公司 | packaged video image sensitive chip and peackaging method |
| JP2002368949A (en) * | 2001-05-23 | 2002-12-20 | Kingpak Technology Inc | Stacked package structure for image sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1553511A (en) | 2004-12-08 |
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Granted publication date: 20071212 |