Method of integrating functional tuning materials with micro devices and structures thereof

• US 10,707,277 B2
• Filed: 05/23/2019
• Issued: 07/07/2020
• Est. Priority Date: 10/04/2016
• Status: Active Grant

• Current Assignee: Vuereal Inc.
• Original Assignee: Vuereal Inc.
• Inventors: Chaji, Gholamreza
• Primary Examiner(s): Raleigh, Donald L
• Application Number:
  US16/420,580
• Publication Number:
  US 20190280050A1
• Time in Patent Office: 411 Days
• CPC Class Codes: G02B 5/20 Filters polarising elements G02B5/30
• CPC Class Codes: G02F 1/017 Structures with periodic or quasi periodic potential variation, e.g. superlattices, quantum wells
• CPC Class Codes: G02F 1/01791 Quantum boxes or quantum dots
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2300/08 Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
• CPC Class Codes: G09G 3/3225 using an active matrix
• CPC Class Codes: H10K 2102/3023 Direction of light emission
• CPC Class Codes: H10K 50/18 Carrier blocking layers
• CPC Class Codes: H10K 50/805 Electrodes
• CPC Class Codes: H10K 50/85 Arrangements for extracting light from the devices
• CPC Class Codes: H10K 50/856 comprising reflective means
• CPC Class Codes: H10K 50/865 comprising light absorbing layers, e.g. light-blocking layers
• CPC Class Codes: H10K 59/121 characterised by the geometry or disposition of pixel elements
• CPC Class Codes: H10K 59/122 Pixel-defining structures or layers, e.g. banks
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]

Abstract

The disclosure is related to creating different functional micro devices by integrating functional tuning materials and creating an encapsulation capsule to protect these materials. Various embodiments of the present disclosure also related to improve light extraction efficiencies of micro devices by mounting micro devices at a proximity of a corner of a pixel active area and arranging QD films with optical layers in a micro device structure.

Claims

1. A display comprising:

a substrate; and

at least one pixel structure disposed on or over the substrate, wherein each respective pixel structure of the at least one pixel structure includes;

at least one micro device mounted in proximity of a corner of the respective pixel structure;

at least one color conversion layer mounted on the at least one micro device; and

a top reflector mounted on the at least one color conversion layer extended over the top of the area of the at least one micro device.

2. The display of claim 1, further comprising:

at least one wall surrounding a part or a whole of the at least one pixel structure.

3. The display of claim 2, further comprising:

a reflective layer covering the at least one wall to reflect back light towards the at least one pixel structure.

4. The display of claim 1, wherein the top reflector is a conductive electrode for coupling the at least one micro device to a signal source.

5. The display of claim 3, wherein the reflective layer is a touch sensor electrode.

6. The display of claim 1, further comprising:

a bottom reflector disposed between the at least one micro device and the substrate for reflecting light back from the at least one micro device.

7. The display of claim 6, wherein the bottom reflector is used as an electrode.

8. The display of claim 1, wherein the top reflector is patterned to open a pixel area to let light be directed outwardly from the pixel area.

9. The display of claim 6, wherein the bottom reflector is patterned to open an area to let light be directed outwardly from the at least one micro device.

10. The display of claim 2, wherein the at least one wall comprises a dielectric layer, a polymer, a stack of metals or another reflector.

11. The display of claim 1, wherein a plurality of optical layers is coupled with the at least one micro device.

12. The display of claim 11, wherein the plurality of optical layers are disposed in between the at least one color conversion layer.