Organic compound, organic light-emitting element, and image display unit
An organic compound contains 8H-naphth[2,1-b]carbazole as the basic skeleton thereof. An organic light-emitting element includes an organic compound layer containing the organic compound. A display device and an image display unit each include the organic light-emitting element. The organic light-emitting element is also used in a lighting device and an image forming apparatus.
1. An organic compound expressed by the following general formula (1):
wherein R 1 to R 6 each represent a chemical species selected from the group consisting of hydrogen, halogens, and cyano, alkyl, and alkoxy groups; Ar 1 to Ar 5 each represent a group selected from the group consisting of aryl and heterocycle groups that may each have a substituent selected from the group consisting of halogens, a cyano group, alkyl groups having a carbon number in the range of 1 to 4, phenyl, and naphthyl, phenanthrenyl, fluorenyl, triphenylenyl, chrysenyl, dibenzothienyl, dibenzofuranyl, carbazolyl, and phenanthrolyl groups; and p, q and r each represent 0 or 1, but are not 0 all at the same time.
2. An organic light-emitting element comprising:
an anode;
a cathode; and
an organic compound layer disposed between the anode and the cathode, the organic compound layer containing the organic compound as set forth in claim 1 .
3. The organic light-emitting element according to claim 2 , wherein the organic compound layer is a luminescent layer.
4. The organic light-emitting device according to claim 2 , further comprising a luminescent layer, wherein the organic compound layer is a hole transport layer.
5. The organic light-emitting element according to claim 3 , wherein the luminescent layer includes at least two layers that emit different colors.
6. The organic light-emitting element according to claim 5 , wherein the organic light-emitting element emits white light.
7. A display device comprising:
a plurality of pixels, each including the organic light-emitting element as set forth in claim 2 , and a transistor connected to the organic light-emitting element.
8. A display device comprising:
a plurality of pixels, each including the organic light-emitting element as set forth in claim 5 , a transistor connected to the organic light-emitting element, and a color filter.
9. An image display unit comprising:
an input portion to which image information is input; and
a display portion to which an image is output, the display portion including the display device as set forth in claim 7 .
10. A lighting device comprising:
the organic light-emitting element as set forth in claim 2 ; and
an inverter circuit connected to the organic light-emitting element.
11. The lighting device according to claim 10 , further comprising a color filter.
12. An image forming apparatus comprising:
a light source including a plurality of the organic light-emitting elements as set forth in claim 2 ; and
a photosensitive member on which a latent image is formed by exposure using light from the light source.
13. The display device according to claim 7 , wherein the transistor contains an oxide semiconductor.