Self-luminous display panel having different optical distances between light-shielding film and light emission reference points depending on light emission color
A self-luminous display panel in which pixels composed of sub-pixels are arranged, including light-emitting elements and a light-shielding film. The light-emitting elements correspond one-to-one with the sub-pixels, each sub-pixel in a pixel emitting a different color of light. The light-shielding film is provided with openings at positions corresponding to the light-emitting elements in plan view, downstream in a light emission direction of the light-emitting elements. Optical distances between the light-shielding film and light emission reference points of the light-emitting elements are different, depending on light emission color of the light-emitting elements.
1. A self-luminous display panel in which pixels composed of sub-pixels are arranged, comprising:
light-emitting elements corresponding one-to-one with the sub-pixels, each sub-pixel in a pixel emitting a different color of light; and
a light-shielding layer at edge positions corresponding to the light-emitting elements in plan view, downstream in a light emission direction of the light-emitting elements, wherein
optical distances between the light-shielding layer and light emission reference points of the light-emitting elements are different, depending on light emission color of the light-emitting elements, and
the pixels are arranged in a matrix of rows and columns,
the light-emitting elements have different lengths in a row or column direction depending on the light emission color of the light-emitting elements, and
among the light-emitting elements of each pixel, a first light-emitting element that has a larger length in the row or column direction has a larger value among the optical distances than a second light-emitting element that has a smaller length in the row or column direction.
2. The self-luminous display panel of claim 1 , wherein
the optical distances are each a maximum distance in the light emission direction between an edge position of the light-shielding layer, and one of the light emission reference points of a corresponding one of the light-emitting elements.
3. The self-luminous display panel of claim 2 , wherein
positions in the light emission direction of top edges of the edge positions of the light-shielding layer corresponding to the light-emitting elements are different, depending on the light emission color of the light-emitting elements.
4. The self-luminous display panel of claim 2 , wherein
positions in the light emission direction of the light emission reference points of the light-emitting elements are different, depending on the light emission color of the light-emitting elements.
5. The self-luminous display panel of claim 1 , further comprising:
a light-adjusting layer between the light-emitting elements and the light-shielding layer in the light emission direction, wherein
the light-adjusting layer has areas corresponding to the light-emitting elements in plan view, and a refractive index of the light-adjusting layer is different for different areas, depending on light emission color of the light-emitting elements.
6. The self-luminous display panel of claim 1 , further comprising:
a light-adjusting layer between the light-emitting elements and the light-shielding layer in the light emission direction, the light-adjusting layer being common to a plurality of the light-emitting elements that emit different colors of light, wherein
a refractive index of the light-adjusting layer is different for different wavelengths of light emitted by the light-emitting elements.
7. The self-luminous display panel of claim 1 , wherein
the light-shielding layer is composed of portions of color filter layers overlapping in plan view above boundaries between the light-emitting elements, where the color filter layers correspond one-to-one with the light-emitting elements.
8. The self-luminous display panel of claim 1 , wherein
the pixels are arranged in a matrix of rows and columns, and
in plan view, in a row direction, a column direction, or both the row and column directions, the edge positions of the light-shielding layer each include the light-emitting element corresponding to the edge position, and a distance between an edge of the edge position and the light-emitting element is the same among the light-emitting elements, regardless of the light emission color of the light-emitting elements.
9. The self-luminous display panel of claim 1 , wherein
the pixels are arranged in a matrix of rows and columns,
the light-emitting elements of each pixel are arranged in a line in the row direction,
banks extending in the column direction are disposed between the light-emitting elements in the row direction,
each of the light-emitting elements includes a light-emitting layer including an applied film disposed in a gap between the banks, and
each of the light-emitting layers includes a flat portion that has a substantially uniform film thickness disposed in a range that includes a center point in the row direction of the gap between the banks, and pinning portions disposed on either side of the flat portion in the row direction that have a larger film thickness than the flat portion.
10. The self-luminous display panel of claim 9 , wherein
a difference in chromaticity between chromaticity observed from a viewing angle of 45 degrees from the front of the display panel in the row direction and chromaticity observed from a viewing angle of 45 degrees from the front of the display panel in the column direction is from 0 to 0.02, where the difference in observed chromaticity is caused by a portion of light emitted from each light-emitting element being shielded by an edge of the edge position of the light shielding layer.
11. The self-luminous display panel of claim 9 , wherein
luminance observed from a viewing angle of 45 degrees from the front of the display panel in the column direction is 103% or more of luminance observed from a viewing angle of 45 degrees from the front of the display panel in the row direction, where a difference in observed luminance is caused by a portion of light emitted from each light-emitting element being shielded by the edge of the edge position of the light shielding layer.
12. A self-luminous display panel in which pixels composed of sub-pixels are arranged, comprising:
light-emitting elements corresponding one-to-one with the sub-pixels, each sub-pixel in a pixel emitting a different color of light;
a light-shielding layer at edge positions corresponding to the light-emitting elements in plan view, downstream in a light emission direction of the light-emitting elements, and
a light-adjusting layer between the light-emitting elements and the light-shielding layer in the light emission direction, the light-adjusting layer being common to a plurality of the light-emitting elements that emit different colors of light, wherein
optical distances between the light-shielding layer and light emission reference points of the light-emitting elements are different, depending on light emission color of the light-emitting elements, and
a refractive index of the light-adjusting layer is different for different wavelengths of light emitted by the light-emitting elements.