Package component
A package component includes a base layer, a sensing layer, a photo-curable adhesive, a cover layer and a first filter structure. The photo-curable adhesive and the sensing layer are disposed on the base layer. The sensing layer includes a sensing unit surrounded by the photo-curable adhesive. The cover layer is disposed on the sensing layer. The first filter structure faces the photo-curable adhesive and is disposed on the cover layer. The first filter structure is configured for transmitting a curing light which is used to cure the photo-curable adhesive, and for reflecting a detectable light which is to be sensed by the sensing unit, where the wavelength of the curing light is different from the wavelength of the detectable light.
1. A package component, comprising:
a base layer;
a photo-curable adhesive, disposed on the base layer;
a sensing layer, disposed on the base layer, the sensing layer comprising a sensing unit surrounded by the photo-curable adhesive;
a cover layer, disposed above the sensing layer and hermetically connected to the base layer through the photo-curable adhesive;
a first filter structure, corresponding to the photo-curable adhesive, and disposed on a surface of the cover layer, the first filter structure being configured for transmitting a curing light which is used to cure the photo-curable adhesive, and for reflecting a detectable light which is to be sensed by the sensing unit, wherein a wavelength of the curing light is different from a wavelength of the detectable light; and
a second filter structure, corresponding to the sensing unit, and disposed on a surface of the cover layer, the second filter structure being configured for transmitting the detectable light and for reflecting the curing light.
2. The package component according to claim 1 , wherein the photo-curable adhesive is an ultraviolet-curable adhesive, and the curing light is an ultraviolet light.
3. The package component according to claim 1 , wherein a transmittance of the curing light relative to the first filter structure is greater than 90%.
4. The package component according to claim 1 , wherein a reflectance of the detectable light relative to the first filter structure is greater than 90%.
5. The package component according to claim 1 , wherein the detectable light is a visible light.
6. The package component according to claim 1 , wherein the second filter structure is surrounded by the first filter structure.
7. The package component according to claim 1 , wherein an orthogonal projection of the second filter structure does not overlap with an orthogonal projection of the first filter structure.
8. The package component according to claim 1 , wherein the second filter structure is a broad-band anti-reflective (BBAR) coating, a near-infrared anti-reflective coating (NIR ARC) or a band pass filter.
9. The package component according to claim 1 , wherein the cover layer is a glass substrate.