Method and structure for packaging a high efficiency electro-optics device
AssigneeOpto Tech Corporation
InventorsMing-Der Lin, Chang-Da Tsai, Kwang-Ru Wang, Ching-Liang Kao, Wen-Liang Tseng, Chia-Chen Chang
Life of this patent
Estimating the term…
Abstract
A method and a structure for packaging an electro-optics device are disclosed. A transparent material is added between the die carrier and the electro-optics device, so that the light emitted from the backside of the electro-optics device can be extracted. Furthermore, a light reflective layer is formed on the die carrier, and a pattern of the light reflective layer is designed to prevent the light from being reflected to the active layer, the reflecting decreasing light-emitting efficiency again.
Claims20
A structure of a high efficiency electro-optics device, comprising:
- a die carrier;
- an electro-optics cell having a first electrode and a second electrode electrically connected respectively to said die carrier and a lead frame having an opposite polarity with respect to said first electrode and said second electrode;
- a transparent layer located between said die carrier and said electro-optics cell for fixing said electro-optics cell on a surface of said transparent layer;
- and
- a light reflective layer located optionally in said transparent layer and between said transparent layer and said die carrier, wherein said light reflective layer has a pattern for changing an emitted light, which is generated by said electro-optics cell, to a reflected light and preventing said reflected light from going back to an active layer of said electro-optics cell.
A structure of a high efficiency electro-optics device, comprising:
- a die carrier;
- an electro-optics cell having a first electrode and a second electrode electrically connected respectively to said die carrier and a lead frame having an opposite polarity with respect to said first electrode and said second electrode;
- a transparent layer located between said die carrier and said electro-optics cell for fixing said electro-optics cell on a surface of said transparent layer, wherein said transparent layer is selected from the group consisted of an ITO layer, a CTO layer, a ZnO layer, an IZO layer, and a NiO layer;
- and
- a light reflective layer located optionally in said transparent layer and between said transparent layer and said die carrier, wherein said light reflective layer has a pattern for changing an emitted light, which is generated by said electro-optics cell, to a reflected light and preventing said reflected light from going back to an active layer of said electro-optics cell.
A structure of a high efficiency electro-optics device, comprising:
- a die carrier;
- an electro-optics cell having a first electrode and a second electrode electrically connected respectively to said die carrier and a lead frame having an opposite polarity with respect to said first electrode and said second electrode;
- a transparent layer located between said die carrier and said electro-optics cell for fixing said electro-optics cell on a surface of said transparent layer;
- and
- a light reflective layer located optionally in said transparent layer and between said transparent layer and said die carrier, wherein said light reflective layer has a pattern for changing an emitted light, which is generated by said electro-optics cell, to a reflected light and preventing said reflected light from going back to an active layer of said electro-optics cell, wherein said pattern comprises a plurality of hemispheric lifts, a plurality of hemispheric and sinking forms, or a plurality of grating structures.
Dependencies are inferred from the claim text.