IP Library Granted Patent US 8,072,685
Granted Patent B1
US 8,072,685 · App. 13/017,445 · Granted Dec 6, 2011

Lens assembly and method for forming the same

Assignees: OmniVision Technologies, Inc.; VisEra Technologies Company Limited
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Quick Facts
Patent No.
US 8,072,685
App. No.
13/017,445
Granted
Dec 6, 2011
Kind
B1
Abstract

A method for forming a lens assembly is provided, including: providing a mold substrate, wherein at least a recess is formed from a surface of the mold substrate; providing a transparent substrate; disposing a lens precursor material on the surface of the mold substrate or on a first surface of the transparent substrate; disposing the mold substrate on the transparent substrate such that at least a portion of the lens precursor material is filled in the recess; disposing a mask on a second surface of the transparent substrate to partially cover the transparent substrate; after the mask is disposed, irradiating a light on the second surface of the transparent substrate to transform at least a portion of the lens precursor material on the first surface of the transparent substrate into a lens; and removing the mask and the mold substrate from the transparent substrate and the lens.

Claims (25)

1. A method for forming a lens assembly, comprising:

providing a mold substrate, wherein at least a recess is formed from a surface of the mold substrate;

providing a transparent substrate;

disposing a lens precursor material on the surface of the mold substrate or on a first surface of the transparent substrate;

disposing the mold substrate on the transparent substrate such that at least a portion of the lens precursor material is filled in the recess;

disposing a mask on a second surface of the transparent substrate to partially cover the transparent substrate;

after the mask is disposed, irradiating a light on the second surface of the transparent substrate to transform at least a portion of the lens precursor material on the first surface of the transparent substrate into a lens; and

removing the mask and the mold substrate from the transparent substrate and the lens.

2. The method for forming a lens assembly as claimed in claim 1 , further comprising removing a remaining portion of the lens precursor material from the transparent substrate.

3. The method for forming a lens assembly as claimed in claim 2 , wherein a solvent is used to remove the remaining portion of the lens precursor material.

4. The method for forming a lens assembly as claimed in claim 3 , wherein the solvent substantially does not remove the lens.

5. The method for forming a lens assembly as claimed in claim 1 , wherein the mask has at least an opening exposing a portion of the transparent substrate and the portion of the lens precursor material filled in the recess.

6. The method for forming a lens assembly as claimed in claim 1 , wherein at least a second recess adjacent to the first recess is formed from the surface of the mold substrate, and a portion of the lens precursor material is filled into the second recess.

7. The method for forming a lens assembly as claimed in claim 1 , further comprising forming a second lens on the second surface of the transparent substrate, wherein the second lens substantially aligns with the lens.

8. The method for forming a lens assembly as claimed in claim 1 , further comprising forming a light shielding layer on the transparent substrate to cover a portion of the lens.

9. The method for forming a lens assembly as claimed in claim 1 , further comprising forming a light shielding layer on the transparent substrate, wherein a portion of the light shielding layer is located between the lens and the transparent substrate.

10. A method for forming a lens assembly, comprising:

providing a mold substrate, wherein a plurality of recesses are formed from a surface of the mold substrate;

providing a transparent substrate;

disposing a lens precursor material on the surface of the mold substrate or on a first surface of the transparent substrate;

disposing the transparent substrate on the mold substrate such that at least a portion of the lens precursor material is filled in the recesses;

disposing a mask on a second surface of the transparent substrate to partially cover the transparent substrate;

after the mask is disposed, irradiating a light on the second surface of the transparent substrate to transform at least a portion of the lens precursor material on the first surface of the transparent substrate into lenses;

removing the mask and the mold substrate from the transparent substrate and the lenses; and

dicing the transparent substrate along predetermined scribe lines between the lenses to form a plurality of separate lens assemblies.

Assignments (3)
CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE PREVIOUSLY RECORDED ON REEL 026563 FRAME 0895. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNEES ARE OMNIVISION TECHNOLOGIES, INC. AND VISERA TECHNOLOGIES COMPANY LIMITED. Recorded Aug 11, 2011
From: VISERA TECHNOLOGIES COMPANY LIMITED
To: OMNIVISION TECHNOLOGIES, INC.; VISERA TECHNOLOGIES COMPANY LIMITED
Reel/Frame 026736/0545 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 8, 2011
From: VISERA TECHNOLOGIES COMPANY LIMITED
To: OMNIVISION TECHNOLOGIES, INC.
Reel/Frame 026563/0895 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 31, 2011
From: WU, HAN-LIN; HO, CHIH-CHIANG; TSENG, LIN-YA; CHANG, CHIA-YANG; FU, KUO-JUNG
To: VISERA TECHNOLOGIES COMPANY LIMITED
Reel/Frame 025724/0170 →