Camera lens module and manufacturing method thereof
The present invention discloses a camera lens module. The present invention places and fixes an image sensor chip in an opening in a substrate and then assembles a frame, a lens holder and a lens, thereby minimizing the superposition height of the camera lens module and ensuring that the assembly is simpler and more effective.
1. A camera lens module, comprising:
a substrate ( 10 ), having a through-opening ( 11 ) defined thereon and a plurality of input conductive portions ( 12 ) disposed on the substrate proximate the through-opening;
an image sensor chip ( 20 ) having dimension no larger than that of the through-opening arranged in the through-opening and electrically connected to the input conductive portions on the substrate, the image sensor chip comprising a portion without optical function;
a frame ( 30 ) fixed on a top side of the substrate ( 10 ) around the through-opening with a portion of the frame extends into the through-opening of the substrate and coupled to the portion without optical function through selective application of adhesive,
wherein the frame ( 30 ) includes a plurality of recess structures ( 224 ) arranged horizontally in the boundary defined between the first adhesive portion ( 222 ) and the second adhesive portion ( 223 ) for exposing the image sensor chip there-through, wherein adhesive is disposable through the recess structures,
wherein the selective application of adhesive includes a first adhesive portion ( 222 ) surroundingly disposed on the top side of the substrate around the through-opening, and a second adhesive portion ( 223 ) enclosingly disposed on the portion without optical function in corresponding alignment with the extended portion of the frame, so as to retain the image sensor chip in the through-opening of the substrate;
a lens holder ( 40 ), fixed on the frame; and
a lens ( 50 ), assembled in the holder.
2. The camera lens module as claimed in claim 1 , wherein the substrate is a printed circuit board.
3. The camera lens module as claimed in claim 1 , further comprising a layer of opaque non-conductive material being applied to a bottom surface of the camera lens module.
4. The camera lens module as claimed in claim 3 , wherein the layer of opaque non-conductive material is made of a non-conductive thin film of black gum adhered to the bottom surface of the camera lens module or non-conductive black lacquer coated on the bottom surface of the camera lens module.
5. The camera lens module of claim 1 , wherein a side edge of the image sensor chip is adheringly attached to a portion of the inner side surface of the substrate ( 10 ) that defines the opening ( 11 ).
6. The camera lens module of claim 1 , wherein adhesive is disposed through the recess structures to substantially fill gaps between the substrate ( 10 ), the image sensor chip ( 20 ), and the frame ( 30 ).
7. The camera lens module of claim 6 , wherein the input conductive portion of the substrate and the image sensor chip are electrically connected through wire bonding ( 13 ), wherein the wire bonding is protected by encapsulating deposition of adhesive through the recess structures.
8. The Camera lens module of claim 7 , wherein the wire bonding is protected by encapsulating deposition of adhesive from a bottom side of the substrate via the through-opening.