Display panel and electronic apparatus including the same

A display panel comprising a color conversion panel, and a light emitting panel with a surface opposite a surface of the color conversion panel,

• wherein the light emitting panel comprises a light emitting device and the light emitting device comprises a first electrode, a second electrode, and a blue light emitting unit disposed between the first electrode and the second electrode, and the blue light emitting unit is configured to emit blue light and includes an organic light emitting layer,
• wherein the organic light emitting layer comprises a host, a sensitizer, and an emitter, emitter that includes a condensed ring compound;
• wherein the blue light has a peak emission wavelength of greater than or equal to about 450 nanometers and less than or equal to about 465 nanometers and a full width at quarter maximum (FWQM) of greater than or equal to about 20 nanometers and less than or equal to about 60 nanometers,
• wherein the color conversion panel comprises a color conversion layer comprising at least two color conversion regions, and a partition wall defining the at least two color conversion regions of the color conversion layer,
• wherein the color conversion region comprises a first region corresponding to a green pixel, and a second region corresponding to a red pixel,
• wherein the first region comprises a first composite including a matrix and a first semiconductor nanoparticle dispersed in the matrix, and optionally titanium oxide particles, wherein the first semiconductor nanoparticles comprises a Group I-III-VI compound comprising silver, indium, gallium, and sulfur, and is configured to emit green light,
• wherein the first semiconductor nanoparticle exhibits a charge balance value defined by Equation 1 that is greater than or equal to about 0.97 and less than or equal to about 1.2:
• charge balance value={[Ag]+3([In]+[Ga])}/2[S] Equation 1
• in Equation 1, [Ag], [In], [Ga], and [S] are molar amounts of silver, indium, gallium, and sulfur, respectively, in the first semiconductor nanoparticle,
• wherein the green light has a peak emission wavelength of greater than or equal to about 500 nanometers and less than or equal to about 550 nanometers, and a full width at half maximum (FWHM) of greater than or equal to about 10 nanometers and less than or equal to about 35 nanometers, and
• at least about 97% of emission from the first semiconductor nanoparticles is band-edge emission, or
• wherein in a photoluminescence spectrum of the first semiconductor nanoparticle, a relative band-edge emission intensity defined by Equation 2 is greater than about 20:
• relative band-edge emission intensity=A1/A2 Equation 2
• wherein
• A1 is an intensity at a maximum emission wavelength, and
• A2 is a maximum intensity in a tail wavelength range of the maximum emission wavelength+greater than or equal to about 80 nm,
• wherein the second region comprises a second composite including a matrix and a second semiconductor nanoparticle dispersed in the matrix, and optionally titanium oxide particles, wherein the second semiconductor nanoparticles comprise a Group III-V compound comprising indium and phosphorus, and is configured to emit red light, wherein the red light has a peak emission wavelength of greater than or equal to about 600 nanometers and less than or equal to about 650 nanometers.