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1. (WO2018227059) STRUCTURE D’AFFICHAGE VISUEL COMPORTANT UN AMPLIFICATEUR DE CONTRASTE MÉTALLIQUE, ET AFFICHAGES VISUELS FABRIQUÉS AVEC CELLE-CI
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

What is claimed is:

1. A visual-display structure, comprising:

a plurality of light-emitting elements (LEEs) arranged in an array so as to provide a plurality of pixels, wherein ones of the plurality of LEEs are physically spaced from one another to form inter-LEE spaces;

a support structure supporting the plurality of LEEs in the array and including electronic

circuitry designed and configured for electrically connecting the plurality of pixels to an image driver that, when present and operating, drives the plurality of pixels so that the visual-display structure displays at least a portion of an image; and

a contrast enhancer coupled to the support structure and present in the inter-LEE spaces

between adjacent ones of the plurality of LEEs, wherein the contrast enhancer comprises a metal sheet containing a plurality of openings corresponding to ones of the plurality of LEEs.

2. The visual-display structure according to claim 1, wherein the support structure comprises a circuit board and each of the plurality of LEEs is packaged into a light-emitting package that is attached to the circuit board after the light-emitting package has been manufactured, and the inter-LEE spaces are inter-package spaces.

3. The visual-display structure according to claim 1, wherein each of the plurality of LEEs is a non- package-type LEE.

4. The visual-display structure according to claim 3, wherein the plurality of LEEs are located in a layer beneath the contrast enhancer.

5. The visual-display structure according to claim 1, wherein the contrast enhancer comprises a ferromagnetic metal, and the contrast enhancer is coupled to the support structure by magnetic attraction to at least one magnet.

6. The visual-display structure according to claim 1, wherein the contrast enhancer has a viewing face that includes a treatment to make the viewing face black.

7. The visual-display structure according to claim 6, wherein the treatment comprises a black

coating.

8. The visual-display structure according to claim 7, wherein the treatment comprises a carbon nanotube coating.

9. The visual-display structure according to claim 1, wherein the contrast enhancer comprises a viewing face that includes a multicolor treatment.

10. The visual-display structure according to claim 9, wherein the multicolor treatment provides the viewing face with a graphic viewable when the visual-display structure is not energized.

11. The visual-display structure according to claim 1, wherein the contrast enhancer is part of an electrostatic loudspeaker.

12. The visual-display structure according to claim 11, wherein the contrast enhancer comprises a stator of the electrostatic loudspeaker.

13. The visual-display structure according to claim 12, further comprising electronic circuitry in electrical communication with the contrast enhancer for electrically energizing the contrast enhancer during operation of the electrostatic loudspeaker.

14. The visual-display structure according to claim 1, wherein each of the plurality of light-emitting packages comprises a surface mount device.

15. The visual-display structure according to claim 14, wherein each of the plurality of light-emitting packages includes red, green, and blue light emitting devices.

16. The visual-display structure according to claim 14, wherein each of the plurality of light-emitting packages is one of a red, green, and blue light emitting device.

17. The visual-display structure according to claim 1, wherein each of the plurality of openings in the contrast enhancer is an etched opening.

18. The visual-display structure according to claim 1, wherein the metal sheet of the contrast

enhancer has a thickness of less than 0.6 mm.

19. The visual-display structure according to claim 1, wherein the metal sheet of the contrast

enhancer is electrically grounded during deployment so as to provide electrostatic discharge protection.

20. The visual-display structure according to claim 1, wherein the printed circuit board includes an electrostatic-discharge-protection grounding circuitry, and the metal sheet is electrically connected to the electrostatic-discharge-protection grounding circuitry.

21. The visual-display structure according to claim 1, wherein the support structure includes at least one heat- sinking structure, and the metal sheet of the contrast enhancer is thermally coupled to the at least one heat-sinking structure.

22. The visual-display structure according to claim 1, wherein at least a portion of the contrast

enhancer functions as a loudspeaker diaphragm and the visual-display structure further comprises at least one stator located to drive the at least a portion of the contrast enhancer.

23. The visual-display structure according to claim 22, wherein the contrast enhancer includes a first panel and a second panel spaced from one another, the visual-display structure further comprising at least one first stator located relative to the first panel of the contrast enhancer so as to drive the first panel as a first diaphragm of an ultrasonic loudspeaker and at least one second stator located relative to the second panel of the contrast enhancer so as to drive the second panel as a second diaphragm of the ultrasonic loudspeaker.

24. The visual-display structure according to claim 22, wherein the at least one stator is secured to the support structure and the at least a portion of the contrast enhancer is spaced from the at least one stator by an air gap.

25. The visual-display structure according to claim 21, wherein the at least one stator is

monolithically integrated into the at least a portion of the contrast enhancer.

26. The visual-display structure according to claim 1, further comprising a touch sensor, wherein the contrast enhancer functions as a conductive sheet of the touch sensor.

27. The visual-display structure according to claim 26, wherein the touch sensor is a capacitive touch sensor.

28. The visual-display structure according to claim 26, wherein the touch sensor is a resistive touch sensor.

29. The visual-display structure according to claim 1, further comprising a touch sensor, wherein the contrast enhancer supports at least one conductive sensing element of the touch sensor.

30. The visual-display structure according to claim 1, wherein at least some of the LEEs function part of the time as photodiodes for providing the display structure a light-based user interface, the visual-display structure further comprising sensing and mapping electronics for sensing and mapping location of one or more shadows and/or one or more concentrations of light cast onto the display structure.

31. A visual display incorporating the visual-display structure of any one of claims 1 to 30.

32. A method of making a visual-display structure, the method comprising:

providing a circuit board comprising a plurality of light-emitting-package receivers arranged in an array to create a plurality of pixels, wherein the circuit board includes electronic circuitry designed and configured for electrically connecting the plurality of pixels to an image driver that, when present and operating, drives the plurality of pixels so that the visual-display structure displays at least a portion of an image;

securing a plurality of light-emitting packages to the circuit board correspondingly and

respectively at the plurality of light-emitting package receivers so that the plurality of light- emitting packages are spaced from one another to form inter-package spacing between adjacent ones of the plurality of light-emitting packages;

electrically connecting each of the plurality of light-emitting packages to the electronic

circuitry;

providing a contrast enhancer that comprises a metal sheet containing a plurality of openings corresponding to the plurality of light-emitting packages secured to the plurality of light- emitting package receivers; and

coupling the contrast enhancer to the circuit board so that portions of the contrast enhancer are located in the inter-package spacing.

33. The method according to claim 32, wherein the providing of the contrast enhancer comprises etching the metal sheet so as to form the plurality of openings in the metal sheet.

34. The method according to claim 32, wherein the contrast enhancer has a viewing face when

coupled to the circuit board, and the providing of the contrast enhancer comprises treating the metal sheet so that the viewing face is black.

35. The method according to claim 34, wherein the treating of the metal sheet includes coating the viewing face with black paint.

36. The method according to claim 32, wherein the treating of the metal sheet includes coating the viewing face with a carbon-nanotube-based coating.

37. The method according to claim 32, wherein the contrast enhancer has a viewing face when coupled to the circuit board, and the providing of the contrast enhancer comprises applying a graphic to the viewing face.

38. The method according to claim 32, wherein the coupling of the contrast enhancer to the circuit board comprises magnetically attracting the contrast enhancer toward the circuit board.