CN1674294A - Packaging structure of optical sensing chip and producing method thereof - Google Patents
Packaging structure of optical sensing chip and producing method thereof Download PDFInfo
- Publication number
- CN1674294A CN1674294A CNA2004100085805A CN200410008580A CN1674294A CN 1674294 A CN1674294 A CN 1674294A CN A2004100085805 A CNA2004100085805 A CN A2004100085805A CN 200410008580 A CN200410008580 A CN 200410008580A CN 1674294 A CN1674294 A CN 1674294A
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- CN
- China
- Prior art keywords
- optical sensing
- chip
- encapsulating structure
- printing
- sensing chip
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000003287 optical effect Effects 0.000 title claims description 53
- 238000004806 packaging method and process Methods 0.000 title abstract description 9
- 239000000758 substrate Substances 0.000 claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 claims description 25
- 239000011521 glass Substances 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 8
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 7
- 238000004026 adhesive bonding Methods 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 239000010931 gold Substances 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 5
- 230000003749 cleanliness Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000006059 cover glass Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/161—Cap
- H01L2924/1615—Shape
- H01L2924/16195—Flat cap [not enclosing an internal cavity]
Landscapes
- Transforming Light Signals Into Electric Signals (AREA)
Abstract
A package structure consists of a light transmission substrate, a path line layer of printed circuit and light sensing chip. Its preparing method includes connecting electric connected part with path line layer for connecting chip to substrate to make light sensing area adjacent to light transmission substrate, connecting lug with substrate on edge of chip for connecting printed circuit board, placing adhesive on chip edge and substrate for packaging light sensing chip.
Description
Technical field
The present invention relates to a kind of encapsulating structure and manufacture method thereof of optical sensing chip, particularly relate to a kind of manufacture method of encapsulation of utilizing to make the encapsulating structure of optical sensing chip.
Background technology
Known packaging structure of light-sensing chip as shown in Figure 1, on wafer, make a plurality of optical sensing chips (figure does not show) earlier, and adopt cutting technique to be separated into other optical sensing chip 10a, printed circuit board base board 20a is provided again, to carry this optical sensing chip 10a, and the glutinous support portion 30a that puts goes up to form a recess 21a in this printed circuit board base board 20a, utilize cement that this optical sensing chip 10a is sticked in the recess 21a of this substrate 20a again, and heating makes its curing, carry out routing again, then on the 30a of this support portion, put cement, again front cover glass loam cake 40a thereon.
Known optical sensing chip has following shortcoming:
1. known technology is that the cutting wafer is with after forming other optical sensing chip, gluing is on this substrate again, and the photosensitive area of this optical sensing chip up, carry out chip package process such as routing and encapsulation again, therefore attach the photosensitive area of this chip easily because of particulate, and influence the light sensing effect, to such an extent as to must improve the cleanliness factor requirement of preparation environment, so increase preparation cost.
Therefore 2. known packaging structure of light-sensing chip, its support portion volume is big, increases this packaging structure of light-sensing chip volume, increases material cost, and reduces to apply to the chance on the little device of volume.
Summary of the invention
One purpose of the present invention is to provide a kind of encapsulating structure and manufacture method thereof of optical sensing chip, reduces the encapsulating structure volume thus and the position is set.
Its two purpose of the present invention, be to provide a kind of encapsulating structure and manufacture method thereof of optical sensing chip, by turning-over of chip with this sensitive chip of gluing on the printing-type circuit trace layer on this transparent substrates, therefore make photosensitive area on this sensitive chip down with adjacent to this transparent substrates, make and in preparation process, can avoid particulate to drop in the photosensitive area of this sensitive chip, and reduce the cleanliness factor requirement of Chip Packaging environment simultaneously, so reduce preparation cost.
In order to achieve the above object, the invention provides a kind of encapsulating structure of optical sensing chip, it comprises a transparent substrates, a printing-type circuit trace layer and a sensitive chip, wherein this printing-type circuit trace layer is attached to a side of this transparent substrates, this sensitive chip has at least one photosensitive area and a plurality of electrical connection section, and be positioned at the same side of this sensitive chip, described electrical connection section is electrically connected on this printing-type circuit trace layer.
According to above-mentioned conception, the encapsulating structure of this optical sensing chip also comprises at least one protection glue, and it is attached to reaching on this transparency carrier, to seal this photosensitive area on this transparency carrier of this sensitive chip on every side.
According to above-mentioned conception, the encapsulating structure of this optical sensing chip comprises that also a plurality of electrical connection projections are attached on this sensitive chip printing-type circuit trace layer on every side.
According to above-mentioned conception, the encapsulating structure of this optical sensing chip also comprises a printed circuit board (PCB), and its electric gluing is electrically connected projection in this, and adjacent to this sensitive chip.
According to above-mentioned conception, the electrical connection section of this sensitive chip is protruding for being electrically connected, and is electrically connected on this printing-type circuit trace layer.
According to above-mentioned conception, described electrical connection projection is made for gold and a kind of of tin.
According to above-mentioned conception, this transparent substrates does not have the printing-type of adhering to circuit trace layer corresponding to the position of this photosensitive area.
According to above-mentioned conception, this transparent substrates is a glass plate.
Another aspect of the present invention also provides a kind of manufacture method of encapsulating structure of optical sensing chip, and its step comprises:
One transparency carrier is provided;
Adhere to a printing-type circuit trace layer in a side of this transparency carrier; And
One sensitive chip is provided, and it has a plurality of electrical connection sections and is electrically connected on this printing-type circuit trace layer, and this sensitive chip has a photosensitive area adjacent to this transparency carrier.
According to above-mentioned conception, the manufacture method of the encapsulating structure of this optical sensing chip also comprises sticks together protection glue on this sensitive chip periphery and this transparency carrier, with the photosensitive area that seals this sensitive chip on this transparency carrier.
According to above-mentioned conception, the manufacture method of the encapsulating structure of this optical sensing chip comprises that also a plurality of electrical connection projections of melting welding are on the printing-type circuit trace layer of this sensitive chip periphery, and provide a printed circuit board (PCB) on described electrical connection projection, and adjacent to this sensitive chip.
According to above-mentioned conception, described electrical connection section is positioned at around the photosensitive area same side of this sensitive chip.
According to above-mentioned conception, the manufacture method of the encapsulating structure of this optical sensing chip also comprises this sensitive chip of anti-lid on the printing-type circuit trace layer of this transparent substrates, and described electrical connection section is electrically connected on this printing-type circuit trace layer.
According to above-mentioned conception, in the manufacture method of the encapsulating structure of this optical sensing chip, this transparent substrates is a glass substrate.
According to above-mentioned conception, in the manufacture method of the encapsulating structure of this optical sensing chip, this printing-type circuit trace layer seal is applied to a side of this transparent substrates.
According to above-mentioned conception, in the manufacture method of the encapsulating structure of this optical sensing chip, this printing-type circuit trace layer is a side that is attached at this transparent substrates.
According to above-mentioned conception, in the manufacture method of the encapsulating structure of this optical sensing chip, described electrical connection section is that gold is electrically connected projection, and is welded on this printing-type circuit trace layer in the mode of hot ultrasonic bonding.
According to above-mentioned conception, in the manufacture method of the encapsulating structure of this optical sensing chip, described electrical connection section is that tin is electrically connected projection, and is fused on this printing-type circuit trace layer with fusing mode.
Like this, the present invention can reduce the encapsulating structure volume and the position is set, and further provide turning-over of chip with this sensitive chip of gluing on the printing-type circuit trace layer on this transparent substrates, so that this photosensitive area down, therefore in preparation, can avoid particulate to fall in the photosensitive area, and also can therefore reduce the shortcut degree requirement of Chip Packaging environment, so reduce preparation cost.
Description of drawings
Fig. 1 is the encapsulating structure end view of known optical sensing chip;
Fig. 2 is the encapsulating structure end view of optical sensing chip of the present invention;
Fig. 3 is the schematic top plan view that transparent substrates of the present invention is attached with printing-type circuit trace layer;
Fig. 4 A has a plurality of optical sensing chip schematic top plan view in the wafer of the present invention;
Fig. 4 B is an optical sensing chip schematic top plan view of the present invention;
Fig. 5 is the printing-type circuit trace layer side elevation view of a sensitive chip upside-down mounting gluing of the present invention on transparent substrates;
Fig. 6 is that the present invention utilizes the sensing area of protection glue sealing sensitive chip and is electrically connected projection in the transparent substrates schematic diagram;
Fig. 7 is the encapsulating structure end view of optical sensing chip of the present invention;
Fig. 8 is the encapsulating structure schematic top plan view that a glass substrate of the present invention has a plurality of optical sensing chips.
Wherein, description of reference numerals is as follows:
The 10a-optical sensing chip; The 20a-printed circuit board base board; The 21a-recess; The 30a-support portion;
40a-glass loam cake; The 10-transparent substrates; 20-printing-type circuit trace layer;
The 30-sensitive chip; The 31-electrical connection section; The 32-photosensitive area; 40-protects glue;
50-is electrically connected projection; The 60-printed circuit board (PCB); The 70-wafer.
Embodiment
See also shown in Figure 2; the present invention is a kind of encapsulating structure of optical sensing chip; it includes the side that transparent substrates 10 and printing-type circuit trace layer 20 are attached to this transparent substrates 10; and the electrical connection section 31 that makes sensitive chip 30 is electrically connected on this printing-type circuit trace layer 20; and the electrical connection section on this sensitive chip 30 31 is positioned at the same side with photosensitive area 32; protect glue 40 to be attached on this sensitive chip 30 and this transparency carrier 10 in addition; to seal this sensitive chip 30 on this transparency carrier 10; and utilize a plurality of electrical connection projections 50 to be formed at optical sensing chip 30 peripheries on this printing-type circuit trace layer 20, to be electrically connected on this printed circuit board (PCB) 60.
See also shown in Figure 3, one transparency carrier 10 wherein is provided earlier, this transparency carrier 10 can be the not glass substrate of given shape, utilizes the printing or the mode of pasting to make a plurality of printing-type circuit trace layers 20 be attached to a side of this transparency carrier 10 again, to form the printed glass substrate.
See also shown in Fig. 4 A and Fig. 4 B, one wafer (wafer) 70 wherein is provided again, wherein have a plurality of sensitive chips 30 on this wafer 70, and each sensitive chip 30 has the same side that a photosensitive area 32 and a plurality of electrical connection section 31 are formed at this sensitive chip 30, and described electrical connection section 31 be positioned at this photosensitive area 32 around, described a plurality of electrical connection section 31 is the electrical connection projection (bump) on this sensitive chip weld pad, cut this wafer 70 again to form other sensitive chip 30, this electrical connection projection can be golden material or high temperature modification tin material is made.
See also shown in Figure 5; wherein cut wafer again to form single sensitive chip 30; and this sensitive chip 30 that overturns is placed on this transparency carrier 10 with counter; be used as the support portion so that be electrically connected projection; to be supported on this printing-type circuit trace layer 20; and use hot ultrasonic Machining mode the golden electrical connection section 31 on this sensitive chip 30 to be connected on the signal of telecommunication transmission point of this printing-type circuit trace layer 20; to produce common golden combination; and make this photosensitive area 32 adjacent to this transparent substrates 10; therefore these transparent substrates 10 corresponding these photosensitive area 32 places there is no this printing-type circuit trace layer 20 coverings; so as to making this transparent substrates 10 these sensitive chips 30 of protection; so that this transparent substrates 10 of light transmission and being detected by this photosensitive area 32; in addition; when the projection of the electrical connection on this sensitive chip 30 was high temperature modification tin material, the mode by melting welding (reflow) made the electrical connection projection melting welding (reflow) of described sensitive chip 30 on the signal of telecommunication transmission point of described printing-type circuit trace layer 20.This preparation process is by this sensitive chip 30 of upset, so that the photosensitive area 32 on this sensitive chip 30 down with adjacent to this transparent substrates 10, so that in this preparation process or preparation process thereafter can avoid particulate to drop in the photosensitive area 32 of this sensitive chip 30, therefore reduce the cleanliness factor requirement of environment in the Chip Packaging, and then reduce preparation cost.
See also shown in Figure 6ly, wherein utilize protection glue 40 to be attached on these sensitive chip 30 peripheries and this transparent substrates 10,, so can avoid aqueous vapor and particulate (Particle) to enter so that described electricals connection projection and this photosensitive area 32 be sealed on this transparent substrates 10.
See also shown in Figure 7ly, it further utilizes melting welding (reflow) technology that a plurality of predetermined positions of the printing-type circuit trace layer 20 of these sensitive chip 30 peripheries are formed with and is electrically connected projection 50, and described electrical connection projection 50 can be low form tin material and makes.
See also Fig. 8 and shown in Figure 2, cut this transparent substrates 10 to form single shape, utilize described electrical connection projection 50 to connect this printed circuit board (PCB) 60 more one by one, make the side of printed circuit board (PCB) 60 adjacent to the no photosensitive area 32 of this sensitive chip 30, therefore by this transparent substrates 10 of light transmission to be detected by this photosensitive area 32, and transmit the signal of telecommunication to this printing-type circuit trace layer 20 by the projection of the electrical connection on this sensitive chip 30, again by this be electrically connected projection 50 with these printing-type circuit trace layer 20 transmission electrical information to this printed circuit board (PCB) 60.
In sum, encapsulating structure and manufacture method thereof by optical sensing chip of the present invention, can be by reducing the encapsulating structure volume and the position being set, simultaneously can by turning-over of chip with this sensitive chip of gluing on the printing-type circuit trace layer on this transparent substrates, therefore make photosensitive area on this sensitive chip down with adjacent to this transparent substrates, so that can avoid particulate to drop in the photosensitive area of this sensitive chip in the preparation, and reduce the shortcut degree requirement of Chip Packaging environment simultaneously, so reduce preparation cost.
The above only is a preferable possible embodiments of the present invention, and is non-so limit to claim of the present invention, so the equivalent structure that all utilizations specification of the present invention and accompanying drawing content are done changes, all should be contained in protection scope of the present invention.
Claims (18)
1. the encapsulating structure of an optical sensing chip is characterized in that comprising:
One transparent substrates;
One printing-type circuit trace layer, it is attached to a side of this transparent substrates; And
One sensitive chip, it has at least one photosensitive area and a plurality of electrical connection section, and is positioned at the same side of this sensitive chip, and described electrical connection section is electrically connected on this printing-type circuit trace layer.
2. the encapsulating structure of optical sensing chip as claimed in claim 1 is characterized in that also comprising at least one protection glue, and it is attached to reaching on this transparency carrier, to seal this photosensitive area on this transparency carrier of this sensitive chip on every side.
3. the encapsulating structure of optical sensing chip as claimed in claim 1 is characterized in that also comprising that a plurality of electrical connection projections are attached on this sensitive chip printing-type circuit trace layer on every side.
4. the encapsulating structure of optical sensing chip as claimed in claim 3 is characterized in that also comprising a printed circuit board (PCB), and its electric gluing is electrically connected projection in this, and adjacent to this sensitive chip.
5. the encapsulating structure of optical sensing chip as claimed in claim 1 is characterized in that the electrical connection section of this sensitive chip is protruding for being electrically connected, and is electrically connected on this printing-type circuit trace layer.
6. the encapsulating structure of optical sensing chip as claimed in claim 5 is characterized in that described electrical connection projection makes for gold and a kind of of tin.
7. the encapsulating structure of optical sensing chip as claimed in claim 1 is characterized in that this transparent substrates does not have the printing-type of adhering to circuit trace layer corresponding to the position of this photosensitive area.
8. the encapsulating structure of optical sensing chip as claimed in claim 1 is characterized in that this transparent substrates is a glass plate.
9. the manufacture method of the encapsulating structure of an optical sensing chip, comprising following step:
One transparency carrier is provided;
Adhere to a printing-type circuit trace layer in a side of this transparency carrier; And
One sensitive chip is provided, and it has a plurality of electrical connection sections and is electrically connected on this printing-type circuit trace layer, and this sensitive chip has a photosensitive area adjacent to this transparency carrier.
10. the manufacture method of the encapsulating structure of optical sensing chip as claimed in claim 9 is characterized in that also comprising and sticks together protection glue on this sensitive chip periphery and this transparency carrier, with the photosensitive area that seals this sensitive chip on this transparency carrier.
11. the manufacture method of the encapsulating structure of optical sensing chip as claimed in claim 10, it is characterized in that also comprising that a plurality of electrical connection projections of melting welding are on the printing-type circuit trace layer of this sensitive chip periphery, and provide a printed circuit board (PCB) on described electrical connection projection, and adjacent to this sensitive chip.
12. the manufacture method of the encapsulating structure of optical sensing chip as claimed in claim 11 is characterized in that described electrical connection section is positioned at around the photosensitive area same side of this sensitive chip.
13. the manufacture method of the encapsulating structure of optical sensing chip as claimed in claim 9, it is characterized in that also comprising that this sensitive chip of anti-lid on the printing-type circuit trace layer of this transparent substrates, makes described electrical connection section be electrically connected on this printing-type circuit trace layer thereafter again.
14. the manufacture method of the encapsulating structure of optical sensing chip as claimed in claim 9 is characterized in that this transparent substrates is a glass substrate.
15. the manufacture method of the encapsulating structure of optical sensing chip as claimed in claim 9 is characterized in that this printing-type circuit trace layer seal is applied to a side of this transparent substrates.
16. the manufacture method of the encapsulating structure of optical sensing chip as claimed in claim 9 is characterized in that this printing-type circuit trace laminating invests a side of this transparent substrates.
17. the manufacture method of the encapsulating structure of optical sensing chip as claimed in claim 9 is characterized in that described electrical connection section is electrically connected projection for gold, and is welded on this printing-type circuit trace layer in the mode of hot ultrasonic bonding.
18. the manufacture method of the encapsulating structure of optical sensing chip as claimed in claim 9 is characterized in that described electrical connection section is that tin is electrically connected projection, and is fused on this printing-type circuit trace layer with fusing mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100085805A CN100362666C (en) | 2004-03-24 | 2004-03-24 | Packaging structure of optical sensing chip and producing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100085805A CN100362666C (en) | 2004-03-24 | 2004-03-24 | Packaging structure of optical sensing chip and producing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1674294A true CN1674294A (en) | 2005-09-28 |
| CN100362666C CN100362666C (en) | 2008-01-16 |
Family
ID=35046675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100085805A Expired - Lifetime CN100362666C (en) | 2004-03-24 | 2004-03-24 | Packaging structure of optical sensing chip and producing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100362666C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100461437C (en) * | 2006-03-07 | 2009-02-11 | 崴强科技股份有限公司 | Method capable of adjusting sensing part lens deviation and its encapsulation structure |
| CN106037630A (en) * | 2015-04-09 | 2016-10-26 | 胡迪群 | Reflective sensing module |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6297551B1 (en) * | 1999-09-22 | 2001-10-02 | Agere Systems Guardian Corp. | Integrated circuit packages with improved EMI characteristics |
| CN1184867C (en) * | 2001-01-09 | 2005-01-12 | 胜开科技股份有限公司 | Structure and method for packaging image sensor |
| CN1201649C (en) * | 2001-01-09 | 2005-05-11 | 胜开科技股份有限公司 | Improved structure and method for packing image sensor |
| CN1450651A (en) * | 2003-05-15 | 2003-10-22 | 王鸿仁 | Image sensor package structure and image taking module using said sensor |
| CN2691057Y (en) * | 2004-03-24 | 2005-04-06 | 宏齐科技股份有限公司 | Package structure of photosensitive chip |
-
2004
- 2004-03-24 CN CNB2004100085805A patent/CN100362666C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100461437C (en) * | 2006-03-07 | 2009-02-11 | 崴强科技股份有限公司 | Method capable of adjusting sensing part lens deviation and its encapsulation structure |
| CN106037630A (en) * | 2015-04-09 | 2016-10-26 | 胡迪群 | Reflective sensing module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100362666C (en) | 2008-01-16 |
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Granted publication date: 20080116 |
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