# US 12,601,952 B2 · Lens structure

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- Number: US 12,601,952 B2
- Document ID: US12601952B2
- Status: Granted
- Kind: B2
- Application number: 18/239,761
- Filed: 2023-08-30
- Published: 2025-03-06
- Granted: 2026-04-14
- Earliest claimed: 2023-08-30
- Assignees: Liqxtal Technology Inc.
- Applicants: Liqxtal Technology Inc.
- Inventors: Hung-Shan Chen; Sung-Nan Chen; Ming-Syuan Chen
- Web page: https://patentgrep.com/patent/US12601952B2

## CPC

- G02F 1/294: {Variable focal length devices}
- G02F 1/29: for the control of the position or the direction of light beams, i.e. deflection
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS

## Abstract

A lens structure includes a first substrate, located in a first layer; a second substrate, located in a second layer; a first adhesive material layer, located in the second layer and located above the second substrate, wherein the adhesive material layer located in a first region of the second layer is a surface relief structure; a first conductive layer, located in a second region of the first layer corresponding to a projected position of the first region, and located under the first substrate; a second conductive layer, located in the second layer and located above the first adhesive material layer; and a first electrically controlled refractive index layer, located in a third region of a third layer corresponding to a projected position of the first region, wherein the third layer is beneath the first layer and above the second layer.

## Claims

### Claim 1

A lens structure, comprising:
a first substrate, located in a first layer;
a second substrate, located in a second layer;
a first adhesive material layer, located in the second layer and located above the second substrate, wherein the adhesive material layer located in a first region of the second layer is a surface relief structure;
a first conductive layer, located in a second region of the first layer corresponding to a projected position of the first region, and located under the first substrate;
a second conductive layer, located in the second layer and located above the first adhesive material layer;
a first electrically controlled refractive index layer, located in a third region of a third layer corresponding to a projected position of the first region, wherein the third layer is beneath the first layer and above the second layer; and
a conductive via, located in a fourth region of the third layer, for electrically connecting the second conductive layer and a third conductive layer located in a fifth region of the first layer corresponding to a projected position of the third region, wherein the third conductive layer is not electrically connected to the first conductive layer.

### Claim 2 (depends on 1)

The lens structure of claim 1, further comprising:
a first insulating layer, located in the first layer and located under the first conductive layer; or
a second insulating layer, located in the second layer and located above the second conductive layer.

### Claim 3 (depends on 1)

The lens structure of claim 1, further comprising:
a first alignment layer, located in the first layer and located under the first conductive layer; and
a second alignment layer, located in the second layer and located above the second conductive layer.

### Claim 4 (depends on 1)

The lens structure of claim 1, further comprising:
a first refractive index matching layer, located in the first layer and located between the first conductive layer and the first substrate; and
a second refractive index matching layer, located in the second layer and located between the second conductive layer and the second substrate.

### Claim 5 (depends on 1)

The lens structure of claim 1, further comprising:
a second electrically controlled refractive index layer, located in the fourth region of the third layer.

### Claim 6 (depends on 1)

The lens structure of claim 1, further comprising:
a second adhesive material layer, located in the fourth region of the third layer.

### Claim 7 (depends on 1)

The lens structure of claim 1, further comprising:
an electrically controlled transmittance layer, located in the fourth region of the third layer.

### Claim 8 (depends on 1)

The lens structure of claim 1, further comprising:
at least one base lens layer, located above the first substrate or under the second substrate.

### Claim 9 (depends on 1)

The lens structure of claim 1, wherein the first substrate is a thin-film transistor liquid crystal panel.

### Claim 10 (depends on 1)

The lens structure of claim 1, wherein the surface relief structure is produced using nanoimprinting lithography (NIL) process.