Image display device and display
An image display device includes a plurality of micro light-emission elements that constitute a pixel and that are provided on a driving circuit substrate. The micro light-emission element displays an image by emitting light to a side opposite to the driving circuit substrate. A light convergence portion that converges light is disposed in the pixel.
1. An image display device comprising:
a plurality of pixels that include micro light-emission elements which are provided on a driving circuit substrate,
wherein the micro light-emission element displays an image by emitting light to a side opposite to the driving circuit substrate, and
a light convergence portion that converges the light is disposed in the pixel.
2. The image display device according to claim 1 ,
wherein the micro light-emission element emits blue light,
the pixel includes a blue sub-pixel that emits the blue light to the side opposite to the driving circuit substrate, and
the light convergence portion dedicated for the blue sub-pixel is disposed on the blue sub-pixel.
3. The image display device according to claim 1 ,
wherein the driving circuit substrate, the micro light-emission element, and a wavelength conversion portion are stacked in order,
the micro light-emission element emits blue light,
the wavelength conversion portion converts the blue light into red light,
the pixel includes a red sub-pixel that emits the red light to the side opposite to the driving circuit substrate, and
the light convergence portion dedicated for the red sub-pixel is disposed on the red sub-pixel.
4. The image display device according to claim 1 ,
wherein the driving circuit substrate, the micro light-emission element, and a wavelength conversion portion are stacked in order,
the micro light-emission element emits blue light,
the wavelength conversion portion converts the blue light into green light,
the pixel includes a green sub-pixel that emits the green light to the side opposite to the driving circuit substrate, and
the light convergence portion dedicated for the green sub-pixel is disposed on the green sub-pixel.
5. The image display device according to claim 1 ,
wherein the pixel includes a plurality of sub-pixels, and
the plurality of sub-pixels include the light convergence portion in common that is shared by at least two sub-pixels among the plurality of sub-pixels.
6. The image display device according to claim 1 ,
wherein the pixel includes a plurality of sub-pixels, and
the light convergence portion is disposed on each sub-pixel.
7. The image display device according to claim 1 ,
wherein the pixel includes a plurality of sub-pixels,
the plurality of sub-pixels include a sub-pixel emitting light emitted by the micro light-emission element without wavelength conversion and a sub-pixel emitting long wavelength light having a longer wavelength than the light emitted by the micro light-emission element by performing wavelength conversion, and
the light convergence portion is disposed on only the sub-pixel emitting the long wavelength light.
8. The image display device according to claim 1 ,
wherein the light convergence portion is a microlens.
9. The image display device according to claim 8 ,
wherein the microlens includes a pillar portion and a lens portion.
10. The image display device according to claim 9 ,
wherein a length of the pillar portion is greater than R/(n−1), where R is a radius of curvature of a surface of the lens portion and n is a refractive index of the lens portion.
11. The image display device according to claim 3 ,
wherein the light convergence portion is a microlens.
12. The image display device according to claim 11 ,
wherein a part of the microlens has a characteristic of absorbing excitation light.
13. The image display device according to claim 3 ,
wherein a reflection layer that reflects excitation light is provided between the light convergence portion and the wavelength conversion portion.
14. The image display device according to claim 1 ,
wherein the light convergence portion is a reflection wall.
15. The image display device according to claim 14 ,
wherein the reflection wall is inclined.
16. The image display device according to claim 14 ,
wherein in a plan view seen from a light emission direction, the reflection wall does not cover a light emission surface of the micro light-emission element.
17. The image display device according to claim 3 ,
wherein a planarization portion including a light shielding material is arranged around the wavelength conversion portion,
the light convergence portion is a microlens, and
the microlens is arranged to cover the planarization portion.
18. The image display device according to claim 3 ,
wherein a planarization portion including a light shielding material is arranged around the wavelength conversion portion,
the light convergence portion is a reflection wall, and
the reflection wall is arranged on only the planarization portion.
19. The image display device according to claim 3 ,
wherein a planarization portion including a light shielding material is arranged around the wavelength conversion portion, and
the planarization portion does not cover a light emission surface of the micro light-emission element.
20. A display comprising:
the image display device according to claim 1 ;
an imaging optical element; and
a combiner optical element.