Light emitting display panel having a structure to prevent damage to conductive lines
View Patent ↗A structure to prevent lines of the device from being damaged or scratched by outside objects or to prevent short circuits from occurring is disclosed. The structure may be utilized in light emitting displays such as an organic electroluminescent panel. The structure includes a cell section, data lines, and scan lines. The cell section includes a plurality of pixels formed in luminescent area that are intersection areas of anode electrode layers and cathode electrode layers. The data lines each are connected to the anode electrode layers. The scan lines each are connected to cathode electrode layers. Here, insulating layers are formed to protect a subset of the data lines and/or a subset of the scan lines. Some of the lines are left uncovered so that inspection process may be carried out.
1. An organic electroluminescent display panel, comprising:
a cell area including a plurality of pixels corresponding to a plurality of luminescent areas disposed at a plurality of cross sections located where a plurality of anode electrode layers cross with a plurality of cathode electrode layers;
a plurality of data lines disposed on a substrate and configured to electrically communicate with a corresponding plurality of anode electrode layers of the cell area to provide data signals thereto;
a plurality of scan lines disposed on the substrate and configured to electrically communicate with a corresponding plurality of cathode electrode layers of the cell area to provide scan signals thereto; and
a plurality of insulating layers disposed on the substrate such that
both ends of a top surface and side surfaces of a subset of the plurality of data lines are each covered by a corresponding insulating layer of the plurality of insulating layers to expose at least a portion of the top surface of the subset of the plurality of data lines, or
both ends of a top surface and side surfaces of a subset of the plurality of scan lines are each covered by a corresponding insulating layer of the plurality of insulating layers to expose at least a portion of the top surface of the subset of the plurality of scan lines, or both.
2. The display pane 1 of claim 1 , wherein
at least one data line comprises a transparent electrode line disposed on the substrate and a metal line disposed on the transparent electrode line, or
at least one scan line comprises the transparent electrode line disposed on the substrate and the metal line disposed on the transparent electrode line, or
both.
3. The display panel of claim 2 , wherein the metal line is a first metal line,
wherein
the at least one data line further comprises a second metal line disposed on the first metal line and a third metal line disposed on the second metal line, or
the at least one scan line further comprises the second metal line disposed on the first metal line and the third metal line disposed on the second metal line, or
both, and
wherein the second metal line is formed from a material from the first and third metal lines.
4. A light emitting display panel, comprising:
a plurality of pixel areas disposed at a plurality of cross sections located where a plurality of anode electrode layers cross with a plurality of cathode electrode layers;
a plurality of data lines disposed over a substrate and configured to electrically communicate with a corresponding plurality of anode electrode layers of the display area to provide data signals thereto;
a plurality of scan lines disposed over the substrate and configured to electrically communicate with a corresponding plurality of cathode electrode layers of the display area to provide scan signals thereto; and
a plurality of insulating layers disposed over the substrate and
disposed to prevent both ends of top surfaces and side surfaces of a subset of the plurality of data lines from being exposed, or
disposed to prevent both ends of a top surface and side surfaces of a subset of the plurality of scan lines from being exposed, or both.
5. The display panel of claim 4 , wherein the light emitting display panel is an organic electroluminescent display panel.
6. The display panel of claim 4 , wherein
at least one data line comprises a transparent electrode line disposed over the substrate and a metal line disposed over the transparent electrode line, or
at least one scan line comprises the transparent electrode line disposed over the substrate and the metal line disposed over the transparent electrode line, or
both.
7. The display panel of claim 6 ,
wherein the metal line is a first metal line,
wherein
the at least one data line further comprises a second metal line disposed over the first metal line and a third metal line disposed over the second metal line, or
the at least one scan line further comprises the second metal line disposed over the first metal line and the third metal line disposed over the second metal line, or
both, and
wherein the second metal line is formed from a material from the first and third metal lines.
8. The display panel of claim 4 , wherein
a height of at least one insulating layer is at least as high as a height of a data line being covered by the at least one insulating layer, or
a height of at least one insulating layer is at least as high as a height of a scan line being covered by the at least one insulating layer, or
both.