| CPC H10K 50/858 (2023.02) [H10K 50/856 (2023.02); H10K 50/865 (2023.02); H10K 59/122 (2023.02); H10K 59/35 (2023.02); H10K 59/38 (2023.02); H10K 59/40 (2023.02); H10K 71/60 (2023.02)] | 18 Claims |
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1. A method of reducing color breakup of reflection of ambient light in a display panel;
wherein the display panel comprises:
a base substrate;
a plurality of light emitting elements on the base substrate and respectively in a plurality of subpixels; and
a color breakup-prevention structure configured to reduce color breakup of reflection of ambient light in the plurality of subpixels;
wherein the color breakup-prevention structure comprises:
a high refractive index lens layer on a side of the plurality of light emitting elements away from the base substrate;
a low refractive index modulation layer on a side of the high refractive index lens layer away from the base substrate;
a first color filter layer in a plurality of subpixel regions, and spaced apart from the high refractive index lens layer by the low refractive index modulation layer; and
a first black matrix layer in an inter-subpixel region, and spaced apart from the high refractive index lens layer by the low refractive index modulation layer;
wherein the high refractive index lens layer has a first refractive index;
the low refractive index modulation layer has a second refractive index smaller than the first refractive index;
the low refractive index modulation layer is substantially transparent and substantially free of a chromogenic material; and
the high refractive index lens layer comprises a plurality of lens portions spaced apart from each other and respectively in the plurality of subpixels;
wherein the method of reducing color breakup of reflection of ambient light comprises:
refracting a first incident ambient light beam at a first interface between a respective one of the plurality of lens portions and a first medium on a side of the respective one of the plurality of lens portions away from the respective one of the plurality of light emitting elements, to generate a first refracted light beam having a direction altered from a direction of a light beam in the first medium;
reflecting the first refracted light beam by a reflective structure in a respective one of the plurality of light emitting elements to generate a first reflected light beam to continue transmitting through at least the first medium, resulting in a first residual portion arriving at the first black matrix layer; and
at least partially absorbing the first residual portion of the first reflected light beam by the first black matrix layer;
wherein the method further comprises:
refracting a second incident ambient light beam at the first interface, to generate a second refracted light beam having a direction altered from the direction of the light beam in the first medium;
reflecting the second refracted light beam by the reflective structure in the respective one of the plurality of light emitting elements to generate a second reflected light beam to continue transmitting through at least the first medium, resulting in a second residual portion arriving at the first color filter layer in a first adjacent subpixel adjacent to a subpixel having the respective one of the plurality of light emitting elements; and
at least partially absorbing the second residual portion of the second reflected light beam by the first color filter layer in the first adjacent subpixel;
wherein the first color filter layer in the first adjacent subpixel has a color different from a color of the first color filter layer in the subpixel having the respective one of the plurality of light emitting elements;
wherein the color breakup-prevention structure comprises:
a second color filter layer in the plurality of subpixel regions, and spaced apart from the low refractive index modulation layer by the high refractive index lens layer; and
a second black matrix layer in the inter-subpixel region, and spaced apart from the low refractive index modulation layer by the high refractive index lens layer;
wherein the method further comprises:
refracting a third incident ambient light beam at an interface between the high refractive index lens layer and the first medium, to generate a third refracted light beam having a direction altered from the direction of the light beam in the first medium;
at least partially absorbing the third refracted light beam by the second color filter layer in the subpixel having the respective one of the plurality of light emitting elements;
reflecting the third refracted light beam by the reflective structure in the respective one of the plurality of light emitting elements to generate a third reflected light beam, the third reflected light beam transmitting along a direction toward a second adjacent subpixel adjacent to the subpixel having the respective one of the plurality of light emitting elements; and
at least partially absorbing the third reflected light beam by the second color filter layer in the subpixel having the respective one of the plurality of light emitting elements;
wherein the first color filter layer in the second adjacent subpixel has a color different from a color of the second color filter layer in the subpixel having the respective one of the plurality of light emitting elements.
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