Organic electroluminescent display panel with first and second bus electrodes and electrically insulating layers

An organic electroluminescent (EL) display panel comprising:

• a plurality of sub-panels divided into a plurality of emitting portions formed on a substrate on which a plurality of first electrodes and second electrodes corresponding to the sub-panels are formed, wherein each of said plurality of first or second electrodes comprises a plurality of first conductive layers or second conductive layers, respectively, arranged in an array of at least one row and at least one column, each of said first conductive layers or second conductive layers being isolated from each other;
• a plurality of first bus electrodes coupled to corresponding first electrodes, wherein said plurality of first bus electrodes is formed in a column direction between at least one of adjacent first conductive layers for coupling at a first side of a corresponding first conductive layer and corresponding first conductive layers for coupling at a second side and wherein the first and second sides are different sides of the first conductive layers, wherein each of said plurality of first bus electrodes comprises at least one conductive first connection formed on the substrate and a first insulating layer covering said conductive first connection;
• a plurality of second bus electrodes insulatively projecting from the substrate for exposing at least portions of the first electrodes respectively, wherein said plurality of second bus electrodes are formed in a row direction between at least one of adjacent second conductive layers for coupling at a first side of a corresponding second conductive layer and corresponding second conductive layer for coupling at a second side, wherein the first and second sides are different sides of the second conductive layers and wherein each of said plurality of second bus electrodes comprises a second insulation layer formed on the first conductive layer, at least one conductive second connection formed on the first conductive layer and a third insulation layer formed on the conductive second connection;
• at least one of first organic function layers, second organic function layers and third organic function layers formed on the exposed portions of the first electrodes, each of said first organic function layers, second organic function layers and third organic function layers including at least one organic electroluminescent medium;
• and
• said plurality of second electrodes formed on said at least one of first, second and third organic function layers and coupled to corresponding second bus electrodes.

A method of making an organic electroluminescent display panel comprising:

• forming a plurality of first electrodes in an array of rows and columns on a substrate, each first electrode being electrically isolated from each other;
• forming a plurality of first bus electrodes between adjacent first electrodes in a column direction and coupled to corresponding first electrodes, wherein each of said plurality of first bus electrodes comprises at least one conductive first connection formed on the substrate and a first insulating layer covering said conductive first connection;
• forming a plurality of second bus electrodes in a row direction and insulatively projecting from the substrate for exposing at least portions of the first electrodes respectively, wherein each of said plurality of second bus electrodes comprises a second insulation layer formed on the first conductive layer, at least one conductive second connection formed on the first conductive layer and a third insulation layer formed on the conductive second connection;
• forming at least one of first, second and third function layers on the exposed portions of the first electrodes, each of said first, second and third organic function layers including at least one organic electroluminescent medium;
• and
• forming a plurality of second electrodes on said at least one of first, second and third organic function layers and coupled to corresponding second bus electrodes.