# US 11,298,957 B2 · Laser panel, laser array device, and laser display

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- Number: US 11,298,957 B2
- Document ID: US11298957B2
- Status: Granted
- Kind: B2
- Application number: 16/614,763
- Filed: 2018-05-04
- Published: 2020-12-03
- Granted: 2022-04-12
- Earliest claimed: 2017-05-19
- Assignees: Institute of Chemistry, Chinese Academy of Sciences
- Applicants: Institute of Chemistry, Chinese Academy of Sciences
- Inventors: Yongsheng Zhao; Jiannian Yao; Jinyang Zhao; Yongli Yan
- Web page: https://patentgrep.com/patent/US11298957B2

## CPC

- B41J 2/442: {using lasers}
- B41J 3/546: {Combination of different types, e.g. using a thermal transfer head and an inkjet print head}
- B41M 3/006: {Patterns of chemical products used for a specific purpose, e.g. pesticides, perfumes, adhesive patterns; use of microencapsulated material; Printing on smoking articles}
- B41M 5/0023: {Digital printing methods characterised by the inks used (inks per se C09D11/00)}
- B41M 5/0058: {on metals and oxidised metal surfaces}
- B41M 5/007: {on glass, ceramic, tiles, concrete, stones, etc.}
- C09D 11/107: from unsaturated acids or derivatives thereof
- C09D 11/108: Hydrocarbon resins
- C09D 11/328: characterised by dyes
- G03B 21/2033: {LED or laser light sources}
- G09G 3/02: by tracing or scanning a light beam on a screen
- H01S 3/168: {using an organic dye dispersed in a solid matrix}
- H01S 3/2391: {emitting at different wavelengths}
- H01S 5/36: comprising organic materials
- H01S 5/4093: {Red, green and blue [RGB] generated directly by laser action or by a combination of laser action with nonlinear frequency conversion}
- B41M 5/0047: {by ink-jet printing}
- C09D 11/102: containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
- C09D 11/106: containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D 11/50: Sympathetic, colour changing or similar inks
- G02B 27/48: Laser speckle optics
- H01S 3/0627: {the resonator being monolithic, e.g. microlaser}
- H01S 3/094034: {the pumped medium being a dye}
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P)
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)
- H01S: DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A laser panel, a laser array device, and a laser display. The laser panel and the laser array device separately comprise multiple groups of independent laser light source modules; each group of laser light source modules comprises plural light sources; the plural light sources are all produced by inkjet printing; the laser display and a voltage-driven laser display separately comprise the laser panel. Producing a laser panel by inkjet printing provides a novel technical solution for cheap and industrial manufacturing of laser panels. It is difficult to generate laser coherent superposition between the light emitted by the laser light source module, and therefore, speckles caused by laser coherence in conventional laser display technologies are greatly eliminated. The present invention achieves a voltage-driven laser display, and facilitates achieving a better display effect while reducing the volume of the display.

## Claims

### Claim 1

A laser panel, comprising:
a plurality of laser source modules, and
each laser source module comprises a plurality of light sources printed by inkjet printing using an ink, and the plurality of light sources are excited by a femtosecond laser.

### Claim 2 (depends on 1)

The laser panel according to claim 1, wherein at least two of the plurality of light sources emit lights of different colors by a same femtosecond laser.

### Claim 3 (depends on 1)

The laser panel of claim 1, wherein, when the laser panel displays an image, light emitted by each laser source module under excitation corresponds to one pixel of the image.

### Claim 4 (depends on 1)

The laser panel of claim 1, wherein the plurality of light sources are RGB light sources.

### Claim 5 (depends on 1)

The laser panel of claim 1, wherein the ink comprises a luminescent dye and a matrix material.

### Claim 6

A device, comprising:
a plurality of laser source modules, each laser source module comprising a plurality of light sources that are printed by inkjet printing using an ink and a femtosecond laser that excites the plurality of light sources.

### Claim 7 (depends on 6)

The device according to claim 6, wherein at least two of the plurality of light sources emit lights of two different colors by a same femtosecond laser.

### Claim 8 (depends on 6)

A laser projector, wherein the laser projector comprises the device according to claim 6.

### Claim 9 (depends on 6)

A laser film, wherein the laser film comprises the device according to claim 6.

### Claim 10 (depends on 6)

The device of claim 6, wherein each light source is on a millimeter scale or a micrometer scale.

### Claim 11 (depends on 6)

The device of claim 6, wherein the plurality of light sources are RGB light sources.

### Claim 12 (depends on 6)

The device of claim 6, wherein the ink comprises a luminescent dye and a matrix material.

### Claim 13

A laser display, comprising a laser panela, wherein the laser panel comprises a plurality of laser source modules, and each laser source module comprises a plurality of light sources printed by inkjet printing using an ink, and the plurality of light sources are excited by a femtosecond laser.

### Claim 14 (depends on 13)

The laser display according to claim 13, wherein at least two of the plurality of light sources emit lights of two different colors by a same femtosecond laser.

### Claim 15 (depends on 13)

The laser display of claim 13, wherein, when the laser panel displays an image, light emitted by each laser source module under excitation corresponds to one pixel of the image.

### Claim 16 (depends on 13)

The laser display of claim 13, wherein the plurality of light sources are RGB light sources.

### Claim 17

A voltage-driven laser display, comprising a laser panel,
wherein the laser panel comprises a plurality of laser source modules,
each laser source module comprises a plurality of light sources
by inkjet printing using an ink, and is excitable by a DC voltage or a pulse voltage.

### Claim 18 (depends on 17)

The voltage-driven laser display according to claim 17, wherein at least two of the plurality of sources emit lights of different colors when excited by a same DC voltage or a same pulse voltage.

### Claim 19 (depends on 17)

The voltage-driven laser display according to claim 17, wherein the DC voltage is about 3V and the pulse voltage has a pulse frequency and an amplitude that match a refresh rate required for display.

### Claim 20 (depends on 17)

The voltage-driven laser display according to claim 17, wherein, when the laser display displays an image, light emitted by each laser source module under excitation corresponds to one pixel of the image.