Liquid lens and liquid lens module
AssigneesLG Display Co., Ltd., Korea Advanced Institute of Science and Technology
InventorsSung-Pil Ryu, Wook-Sung Kim, Han-Saem Kang, Ki-Seok Chang, Yong-Hyub Won, Jun-Sik Lee, Doo-Seub Shin
Life of this patent
Estimating the term…
Abstract
Disclosed are a liquid lens and a liquid lens module, which enhance the fill factor of a liquid lens having an inclined partition, thereby achieving a low drive voltage and a high fill factor. The liquid lens includes an oil layer and a conductive liquid inside a chamber having an inclined partition. The oil layer is formed of an oil mixture obtained by mixing at least two types of oils having different indices of refraction, and the oil mixture has the index of refraction corresponding to the index of refraction of the material in which the chamber is formed.
Claims18
A liquid lens comprising:
- a chamber formed in a first material, the chamber having a surface and inclined sidewalls that extend from the surface, the first material having an index of refraction;
- a first electrode covering the surface and the inclined sidewalls of the chamber, the first electrode being a transparent electrode;
- an oil layer in the chamber, the oil layer including a mixture of a first oil and a second oil, the first oil and the second oil having different indices of refraction, the oil layer having an index of refraction corresponding to the index of refraction of the first material;
- and
- a conductive liquid on the oil layer,
- wherein the oil layer includes chloronaphthalene within a range from 57 vol % to 63 vol % and dodecane within a range from 43 vol % to 37 vol %.
A liquid lens comprising:
- a chamber formed in a first material, the chamber having a surface and inclined sidewalls that extend from the surface, the first material having an index of refraction;
- an oil layer in the chamber, the oil layer including a mixture of a first oil and a second oil, the first oil and the second oil having different indices of refraction, the oil layer having an index of refraction within ±0.2 of the index of refraction of the first material;
- and
- a conductive liquid on the oil layer, wherein the index of refraction of the oil mixture is determined by the following Equation:
- nid=[ϕA(n*A)2+ϕB(n*B)2]1/2
- where, ØA and ØB are respectively percentages of the first oil and the second oil, and n*A and n*B are respectively indices of refraction of the first oil and the second oil.
A liquid lens module comprising:
- a first substrate;
- a liquid lens array disposed on the first substrate, and the liquid lens array including a plurality of liquid lenses, each of the liquid lenses including:
- a chamber formed in a first material, the chamber having a surface and inclined sidewalls that extend from the surface, the first material having an index of refraction;
- a first electrode covering the surface and the inclined sidewalls of the chamber, the first electrode being a transparent electrode;
- an oil layer in the chamber, the oil layer including a mixture of a first oil and a second oil, the first oil and the second oil having different indices of refraction, the oil layer having an index of refraction corresponding to the index of refraction of the first material;
- and
- a conductive liquid on the oil layer;
- and
- a second substrate opposite the first substrate,
- wherein the oil layer includes chloronaphthalene within a range from 57 vol % to 63 vol % and dodecane within a range from 43 vol % to 37 vol %.
A liquid lens module comprising:
- a first substrate;
- a liquid lens array disposed on the first substrate, and the liquid lens array including a plurality of liquid lenses, each of the liquid lenses including:
- a chamber formed in a first material, the chamber having a surface and inclined sidewalls that extend from the surface, the first material having an index of refraction;
- an oil layer in the chamber, the oil layer including a mixture of a first oil and a second oil, the first oil and the second oil having different indices of refraction, the oil layer having an index of refraction within ±0.2 of the index of refraction of the first material;
- and
- a conductive liquid on the oil layer;
- and
- a second substrate opposite the first substrate, wherein the index of refraction of the oil mixture is determined by the following Equation:
- nid=[ϕA(n*A)2+ϕB(n*B)2]1/2
- where, ØA and ØB are respectively percentages of the first oil and the second oil, and n*A and n*B are respectively indices of refraction of the first oil and the second oil.
Dependencies are inferred from the claim text.