An organic electroluminescence device includes: a first emitting layer disposed between an anode and a cathode; a second emitting layer disposed between the first emitting layer and the cathode; and an electron blocking layer disposed between the first emitting layer and the anode, in which the first emitting layer and the second emitting layer are in direct contact with each other; the first emitting layer and the electron blocking layer are in direct contact with each other; the first emitting layer includes a first compound represented by a formula (1) below; the first compound includes at least one group represented by a formula (11) below; the second emitting layer includes a second compound represented by a formula (2); the electron blocking layer includes a third compound; and the third compound satisfies a formula (M1) below.

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There is provided a light absorption filter, an optical filter, an OLED display device, or a liquid crystal display device, containing a resin; a dye that has a main absorption wavelength band at a wavelength of 400 to 700 nm; and a compound that generates a radical upon ultraviolet irradiation, in which the dye includes a specific squarine-based coloring agent represented by General Formula (1) or a specific benzylidene-based coloring agent or cinnamylidene-based coloring agent represented by General formula (V).

A display device includes an anode electrode a cathode electrode a light-emitting layer, and an electron transport layer. The light-emitting layer is provided between the anode electrode and the cathode electrode. The electron transport layer is provided between the cathode electrode and the light-emitting layer. The electron transport layer includes a nanoparticle of a metal oxide, and an organic modifier configured to cover a surface of the nanoparticle and having electron donating characteristics.

Pixels each including a light emitting unit formed by laminating a first electrode, an organic layer, and a second electrode are arranged in a two-dimensional matrix. The organic layer includes multiple light emitting layers of different types and a light emission separation layer. Each of the multiple light emitting layers of different types is laminated as a common layer extending continuously over the pixels. The light emission separation layer is arranged between two adjacent light emitting layers, and is formed so as to have a different configuration depending on a display color of the pixel.

A polycyclic aromatic compound represented by Formula (1) is provided by the invention:

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wherein A.sup.11 ring, A.sup.21 ring, A.sup.31 ring, B.sup.11 ring, B.sup.21 ring, C.sup.11 ring, and C.sup.31 ring are an aryl or heteroaryl ring which may be substituted, Y.sup.11, Y.sup.21, Y.sup.31 are B or the like, X.sup.11, X.sup.12, X.sup.21, X.sup.22, X.sup.31, X.sup.32 are >O or >N—R, R in the above >N—R is an and which may be substituted or the like, R in the above >N—R or the like may be bonded to A.sup.11 ring, A.sup.21 ring, A.sup.31 ring, B.sup.11 ring, B.sup.21 ring, C.sup.11 ring, and/or C.sup.31 ring by a linking group or a single bond; and at least one hydrogen in the compound represented by Formula (1) may be replaced with deuterium, cyano, or a halogen.

A pixel structure includes a plurality of first pixel groups and a plurality of second pixel groups. The first pixel groups and the second pixel groups are arranged in a matrix manner. The first pixel groups and the second pixel group are staggered with each other along a first direction, and are simultaneously staggered with each other long a second direction. Each of the first pixel groups comprises a first sub-pixel and a second sub-pixel. Each of the second pixel groups comprises a third sub-pixel and a fourth sub-pixel. Three of the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel, which are adjacent to each other, cooperate with each other to form a dynamic pixel unit.

A pixel structure includes a plurality of first pixel groups and a plurality of second pixel groups. The first pixel groups and the second pixel groups are arranged in a matrix manner. The first pixel groups and the second pixel group are staggered with each other along a first direction, and are simultaneously staggered with each other long a second direction. Each of the first pixel groups comprises a first sub-pixel and a second sub-pixel. Each of the second pixel groups comprises a third sub-pixel and a fourth sub-pixel. Three of the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel, which are adjacent to each other, cooperate with each other to form a dynamic pixel unit.

A display device according to an embodiment of the present invention includes: a base material including a display region having a plurality of pixels and a frame region; a lower electrode provided in each of the plurality of pixels; an organic material layer arranged on the lower electrode; an upper electrode arranged on the organic material layer and covering the display region; a conductor portion provided in the frame region and connected to the upper electrode; and a rib provided on the conductor portion, wherein the upper electrode is arranged on the conductor portion via the rib, a first contact portion where the upper electrode and the conductor portion contact each other is located in the frame region, the rib has a side surface located at an opposite side of the first contact portion from the display region, and an end portion of the upper electrode faces the side surface.

A light-emitting device with high emission efficiency and reliability is provided. The light-emitting device includes first and second light-emitting units. The first light-emitting unit includes a first light-emitting layer; the first light-emitting layer includes a first material and a second material; the first material has a function of converting triplet excitation energy into light emission; the second material has a function of converting singlet excitation energy into light emission and includes a luminophore and five or more protecting groups; the luminophore is a condensed aromatic ring or a condensed heteroaromatic ring; the five or more protecting groups each independently have any one of an alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, and a trialkylsilyl group having 3 to 12 carbon atoms; and light emission is obtained from the second material.

A top emission organic EL device includes an anode, hole transporting zone, emitting layer, electron transporting zone, and cathode in this order. The hole transporting zone includes: a first layer interposed between the anode and the emitting layer; and a second layer interposed between the first layer and the emitting layer. The first layer contains a first compound and the second layer contains a second compound. A film thickness of the first layer and the second layer satisfies a formula (1) and (2), respectively. A hole mobility μ.sup.H1 of the first compound satisfies a formula (3) and a hole mobility μ.sup.H2 of the second compound satisfies a formula (4),
100 nm≤d1≤300 nm  (1)
1 nm≤d2≤20 nm  (2)
1.0×10.sup.−4 [cm.sup.2/Vs]≤μ.sup.H1≤1.0×10.sup.−1 [cm.sup.2/Vs]  (3)
1.0×10.sup.−10 [cm.sup.2/Vs]≤μ.sup.H2≤1.0×10.sup.−6 [cm.sup.2/Vs]  (4).