Display module and manufacturing method as the same
A display module is disclosed. The display module includes a pixel that includes: first to third self-luminescence elements that are configured to emit light of an ultraviolet wavelength range; first to third color conversion layers respectively corresponding to light emitting surfaces of the first to third self-luminescence elements; a first color filter and a second color filter respectively corresponding to the first color conversion layer and the second color conversion layer; a transparent resin layer corresponding to the third color conversion layer and disposed on a same plane as a plane at which the first color filter and the second color filter are positioned; a transparent cover layer that covers the first color filter, the second color filter, and the transparent resin layer; and an ultraviolet (UV) cutoff filter that covers the transparent cover layer.
1. A display module, comprising:
a substrate; and
a plurality of pixels arranged on the substrate,
wherein each pixel of the plurality of pixels comprises:
a first self-luminescence element, a second self-luminescence element, and a third self-luminescence element that are configured to emit light of an ultraviolet wavelength range;
a first color conversion layer, a second color conversion layer, and a third color conversion layer respectively corresponding to light emitting surfaces of the first self-luminescence element, the second self-luminescence element, and the third self-luminescence element;
a first color filter and a second color filter respectively corresponding to the first color conversion layer and the second color conversion layer;
a transparent resin layer corresponding to the third color conversion layer and disposed on a same plane as a plane at which the first color filter and the second color filter are positioned;
a transparent cover layer that covers the first color filter, the second color filter, and the transparent resin layer; and
an ultraviolet (UV) cutoff filter that covers the transparent cover layer,
wherein areas of surfaces of the first color conversion layer, the second color conversion layer, and the third color conversion layer, that respectively face in a first direction toward the light emitting surfaces of the first self-luminescence element, the second self-luminescence element, and the third self-luminescence element, are respectively greater than areas of the light emitting surfaces of the first self-luminescence element, the second self-luminescence element, and the third self-luminescence element,
wherein the first self-luminescence element, the second self-luminescence element, and the third self-luminescence element are separated from each other by partition walls,
wherein each of the partition walls overlaps at least one from among the first self-luminescence element, the second self-luminescence element, and the third self-luminescence element in a second direction, that is perpendicular to the first direction, and further overlaps at least one from among the first color conversion layer, the second color conversion layer, and the third color conversion layer in the second direction, and
wherein the partition walls are configured to reflect light emitted from side surfaces of the first color conversion layer, the second color conversion layer, and the third color conversion layer.
2. The display module of claim 1 , wherein at least one of the partition walls comprises a white-based color.
3. The display module of claim 1 , wherein at least one of the partition walls has a surface on which a metal film is formed.
4. The display module of claim 1 , wherein the side surfaces of the first self-luminescence element, the second self-luminescence element, and the third self-luminescence element are respectively adhered to side surfaces of the partition walls by an optical adhesive.
5. The display module of claim 4 , wherein portions of the surfaces of the first color conversion layer, the second color conversion layer, and the third color conversion layer that are respectively outwards from the light emitting surfaces of the first self-luminescence element, the second self-luminescence element, and the third self-luminescence element, in the second direction that is perpendicular to the first direction, are adhered with the optical adhesive, and
the optical adhesive is a UV curing silicon rubber.
6. The display module of claim 1 , wherein the first color conversion layer comprises a color conversion material that is configured to emit light of a red wavelength range,
wherein the second color conversion layer comprises a color conversion material that is configured to emit light of a green wavelength range, and
wherein the third color conversion layer comprises a color conversion material that is configured to emit light of a blue wavelength range.
7. The display module of claim 6 , wherein the color conversion material of the first color conversion layer is a red nanophosphor,
wherein the color conversion material of the second color conversion layer is a green nanophosphor, and
wherein the color conversion material of the third color conversion layer is a blue nanophosphor.
8. The display module of claim 7 , wherein the red nanophosphor is Si1-xCaxAlSiN3:Eu2+.
9. The display module of claim 7 , wherein the green nanophosphor is Si6-zAlzOzN8-z:Eu2+ or SrGa2S4.
10. The display module of claim 7 , wherein the blue nanophosphor is BaMgxAlyOz:Eun+.
11. The display module of claim 7 , wherein the red nanophosphor and the green nanophosphor are respectively configured with a particle size distribution median value d50 of less than 0.5 μm.
12. The display module of claim 6 , wherein the color conversion material of the first color conversion layer comprises a red quantum dot,
wherein the color conversion material of the second color conversion layer comprises a green quantum dot, and
wherein the color conversion material of the third color conversion layer comprises a blue quantum dot.
13. The display module of claim 1 , wherein a black matrix is formed between the first color filter, the second color filter, and the transparent resin layer.
14. The display module of claim 1 , wherein the UV cutoff filter is configured with a transmittance of less than or equal to 10% based on a wavelength of less than or equal to 400 nm.
15. The display module of claim 1 , wherein the UV cutoff filter comprises:
a transparent resin; and
UV absorbing particles which are mixed in the transparent resin,
wherein a material of the UV absorbing particle is TiO2 or SiO2, and a size distribution median value d50 of the UV absorbing particles is less than 0.2 μm.
16. The display module of claim 1 , further comprising:
a plurality of substrate electrodes formed on the substrate; and
an anisotropic conductive film,
wherein chip electrodes of the first self-luminescence element, the second self-luminescence element, and the third self-luminescence element are electrically and physically coupled to the plurality of substrate electrodes by the anisotropic conductive film.
17. The display module of claim 1 , wherein each pixel of the plurality of pixels further comprises a protection layer on the UV cutoff filter.