A display apparatus includes a light-source substrate portion which generates light; and a color control portion to which the generated light from the light-source substrate portion is incident and at which color of the generated light is adjusted to define a color-converted light having a color different from that of the generated light. The color control portion includes: an exit surface through which the color-converted light exits the color control portion; a substrate including a plurality of concave portions defined therein, each of the concave portions extended along a direction from the light-source substrate portion to the exit surface of the color control portion; and a plurality of color conversion members respectively in the plurality of concave portions, the color conversion members each including a color-converting material which converts the color of the generated light to the color of the color-converted light.

A display device having a backlight which includes a first quantity of light source blocks that are individually driven at separate duty ratios. The display device includes pixels having a second quantity that is greater than the first quantity. The pixels are configured to determine a light transmission factor for light emitted from the light source blocks. A grayscale compensation unit is configured to calculate color shift amounts of the pixels based on the duty ratios of the light source blocks and compensate input grayscale values for the pixels based on the color shift amounts to correct color shift.

The display assembly includes: a light source configured to emit light; a light guide plate disposed to receive light emitted from the light source on a lateral side; and a color transformer disposed proximate to an edge of the light guide plate, and configured to change a color of light incident to the color transformer.

A photonic transmitter is provided, including a laser source including a first waveguide made of silicon and a second waveguide made of III-V gain material, the waveguides being separated from each other by a first segment of a dielectric layer; and a phase modulator including a first electrode made of single-crystal silicon and a second electrode made of III-V crystalline material, separated from each other by a second segment of the dielectric layer, where a thickness of the dielectric layer is between 40 nm and 1 m, where a thickness of a dielectric material in an interior of the first segment is equal to the thickness of the dielectric layer, and where a thickness of the dielectric material in an interior of the second segment is between 5 nm and 35 nm, a rest being formed by a thickness of semiconductor material.

A display apparatus includes a light-source substrate portion which generates light; and a color control portion to which the generated light from the light-source substrate portion is incident and at which color of the generated light is adjusted to define a color-converted light having a color different from that of the generated light. The color control portion includes: an exit surface through which the color-converted light exits the color control portion; a substrate including a plurality of concave portions defined therein, each of the concave portions extended along a direction from the light-source substrate portion to the exit surface of the color control portion; and a plurality of color conversion members respectively in the plurality of concave portions, the color conversion members each including a color-converting material which converts the color of the generated light to the color of the color-converted light.

Display panels and methods of manufacture are described for down converting a peak emission wavelength of a pump LED within a subpixel with a quantum dot layer. In some embodiments, pump LEDs with a peak emission wavelength below 500 nm, such as between 340 nm and 420 nm are used. QD layers in accordance with embodiments can be integrated into a variety of display panel structures including a wavelength conversion cover arrangement, QD patch arrangement, or QD layers patterned on the display substrate.

A modulator and a capacitor are integrated on a semiconductor substrate for modulating a laser beam. Integrating the capacitor on the substrate reduces parasitic inductance for high-speed optical communication.

The present invention relates to a semiconductor optical amplifier, the semiconductor optical amplifier including: a plurality of optical amplification regions arranged in series; a passive waveguide region provided between optical amplification regions; and first and second electrodes provided on an upper surface of each of the optical amplification regions. The passive waveguide region electrically insulates between the first electrodes and between the second electrodes of the adjacent optical amplification regions and optically connects the adjacent optical amplification regions. The semiconductor optical amplifier electrically connects the first electrode and the second electrode of the respective adjacent optical amplification regions so that the plurality of optical amplification regions are electrically connected in cascade, and feeds power to the optical amplification regions at both ends of arrangements of the plurality of optical amplification regions thereby driving the plurality of optical amplification regions.

A quantum dot including a core and a shell disposed on the core wherein one of the core and the shell includes a first semiconductor nanocrystal including zinc and sulfur and the other of the core and the shell includes a second semiconductor nanocrystal having a different composition from the first semiconductor nanocrystal, the first semiconductor nanocrystal further includes a metal and a halogen configured to act as a Lewis acid in a halide form, an amount of the metal is greater than or equal to about 10 mole percent (mol %) based on a total number of moles of sulfur, and an amount of the halogen is greater than or equal to about 10 mol % based on a total number of moles of sulfur, a method of producing the same, and a composite and an electronic device including the same.

The present invention provides an optically active structure and the use thereof in a backlight unit. The optically active structure comprises a plurality of optically active particles configured to emit light of one or more predetermined wavelength range in response to pumping energy, and a plurality of light scattering elements. The plurality of light scattering elements comprises optically transparent void regions, such as void regions surrounding filler particles.