LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, AND ELECTRONIC DEVICE
First Claim
1. A light-emitting element comprising:
- an organic compound film containing a first organic compound between an anode and a cathode,wherein the organic compound film is provided in contact with the anode and with the cathode,wherein the organic compound film comprises;
a light-emitting region to which a light-emitting substance is added; and
a hole-transport region to which a hole-trapping substance is added,wherein the hole-transport region is located between the light-emitting region and the anode, andwherein a HOMO level of the hole-trapping substance is higher than a HOMO level of the first organic compound by 0.2 eV or more.
1 Assignment
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Accused Products
Abstract
Disclosed is a light-emitting element with a good carrier balance and manufacturing method thereof which does not require the formation of the heterostructure. The light-emitting element includes an organic compound film containing a first organic compound as the main component (base material) between an anode and a cathode, wherein the organic compound film is provided in contact with the anode and with the cathode. The first organic compound further includes a light-emitting region to which a light-emitting substance is added and includes a hole-transport region to which a hole-trapping substance is added and/or an electron-transport region to which an electron-trapping substance is added. The hole-transport region is located between the light-emitting region and the anode, and the electron-transport region is located between the light-emitting region and the cathode.
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Citations
26 Claims
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1. A light-emitting element comprising:
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an organic compound film containing a first organic compound between an anode and a cathode, wherein the organic compound film is provided in contact with the anode and with the cathode, wherein the organic compound film comprises; a light-emitting region to which a light-emitting substance is added; and a hole-transport region to which a hole-trapping substance is added, wherein the hole-transport region is located between the light-emitting region and the anode, and wherein a HOMO level of the hole-trapping substance is higher than a HOMO level of the first organic compound by 0.2 eV or more. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A light-emitting element comprising:
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an organic compound film containing a first organic compound between an anode and a cathode, wherein the organic compound film is provided in contact with the anode and with the cathode, wherein the organic compound film comprises; a light-emitting region to which a light-emitting substance is added; and an electron-transport region to which an electron-trapping substance is added, wherein the electron-transport region is located between the light-emitting region and the cathode, and wherein a LUMO level of the electron-trapping substance is lower than a LUMO level of the first organic compound by 0.2 eV or more. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A light-emitting element comprising:
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an organic compound film containing a first organic compound between an anode and a cathode, wherein the organic compound film is provided in contact with the anode and with the cathode, wherein the organic compound film comprises; a light-emitting region to which a light-emitting substance is added; and a first charge generation region being in contact with the anode, wherein the first charge generation region comprises; an N-type region in which an electron-donating substance is added to the first organic compound; and a P-type region to which an electron-accepting substance is added, and wherein the N-type region is in contact with the anode. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A light-emitting element comprising:
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an organic compound film containing a first organic compound between an anode and a cathode, wherein the organic compound film is provided in contact with the anode and with the cathode, wherein the organic compound film comprises; a light-emitting region to which a light-emitting substance is added; and a first charge generation region being in contact with the cathode, wherein the first charge generation region comprises; an N-type region in which an electron-donating substance is added to the first organic compound; and a P-type region to which an electron-accepting substance is added, and wherein the P-type region is in contact with the cathode. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification