A method of making an OLED device includes providing a first undercut lift-off structure over the device substrate having a first array of bottom electrodes. Next, one or more first organic EL medium layers including at least a first light-emitting layer are deposited over the first undercut lift-off structure and over the first array of bottom electrodes. The first undercut lift-off structure and overlying first organic EL medium layer(s) are removed by treatment with a first lift-off agent comprising a fluorinated solvent to form a first intermediate structure. The process is repeated using a second undercut lift-off structure to deposit one or more second organic EL medium layers over a second array of bottom electrodes. After removal of the second undercut lift-off structure, a common top electrode is provided in electrical contact with the first and second organic EL medium layers.

The present disclosure relates to an organic electroluminescent display panel, a method of manufacturing the same, and a display device that can alleviate or avoid the occurrence of pixel crosstalk problems due to lateral conduction of the charge generation layer. An organic electroluminescent display panel is provided which comprises: a substrate; an anode layer and a pixel defining layer over the substrate, the pixel defining layer defining pixel units, wherein a recess is provided in the pixel defining layer between adjacent pixel units; a stack of organic electroluminescent units over the anode layer and the pixel defining layer, the stack comprising at least two organic electroluminescent units and a charge generation layer disposed between organic electroluminescent units which are adjacent to each other; a cathode layer over the stack, wherein the corresponding charge generation layers of the adjacent pixel units are disconnected at the recesses, and wherein the cathode layer is continuous at the recess.

A display panel comprises includes: a base substrate; a first electrode layer and a second electrode layer on a side of the base substrate; a light-emitting layer between the first electrode layer and the second electrode layer; and a carrier functional layer located at least one of between the first electrode layer and the light-emitting layer, and between the second electrode layer and the light-emitting layer. The light-emitting layer has a plurality of light-emitting portions with different emergent light wavebands; and the carrier functional layer has a plurality of carrier functional portions corresponding to the plurality of light-emitting portions, the plurality of carrier functional portions having molecular chains, which is formed by cross-linking of monomers containing functional groups under light irradiation.

Provided are a display panel, a plasma etching method and a system. After patterning a metal film layer on a substrate with a chlorine-containing gas, a post-treatment for suppressing corrosion is implemented by using plasma containing an oxygen-containing gas and a hydrogen-fluoride-containing gas. Thus, the surface of the metal film layer is an aluminum ion-containing crystal, which solves the technical problem of corrosion of the aluminum layer in the plasma etching technology of the prior art.

An OLED display according to an exemplary embodiment includes: a substrate; a gate insulation layer that is disposed on the substrate; and a gate wire that is disposed on the gate insulation layer, and includes a gate electrode, wherein the gate wire includes a single layer of aluminum or an aluminum alloy, and an angle formed by side surfaces of the gate wire and the gate insulation layer is less than 65°.

The present disclosure relates to an organic electroluminescent display panel, a method of manufacturing the same, and a display device that can alleviate or avoid the occurrence of pixel crosstalk problems due to lateral conduction of the charge generation layer. An organic electroluminescent display panel is provided which comprises: a substrate; an anode layer and a pixel defining layer over the substrate, the pixel defining layer defining pixel units, wherein a recess is provided in the pixel defining layer between adjacent pixel units; a stack of organic electroluminescent units over the anode layer and the pixel defining layer, the stack comprising at least two organic electroluminescent units and a charge generation layer disposed between organic electroluminescent units which are adjacent to each other; a cathode layer over the stack, wherein the corresponding charge generation layers of the adjacent pixel units are disconnected at the recesses, and wherein the cathode layer is continuous at the recess.

A method for manufacturing the pixel definition layer includes forming a photolithographic material film on a substrate; performing a pre-drying treatment, a first exposure treatment, and a development treatment sequentially on the photolithographic material film to form an initial pattern of the pixel definition layer; and performing a second exposure treatment and a curing treatment sequentially on the initial pattern to form a final pattern of the pixel definition layer.

Nanoparticle(NP)-decorated carbon nanotube (CNT) ropes used as sensing elements for hydrogen gas (H.sub.2) chemiresistors are described herein. The NP-decorated CNT rope sensors were prepared by dielectrophoretic deposition of a single semiconducting CNT rope followed by the electrodeposition of metal nanoparticles to highly disperse said nanoparticles on the CNT surfaces. The rope sensors produced a relative resistance change 20-30 times larger than what was observed at single, pure Pd nanowires. Thus, the rope sensors improved upon all H.sub.2 sensing metrics (speed, dynamic range, and limit-of-detection) relative to single Pd nanowires.

A polymer blend, including at least one organic semiconductor (OSC) polymer and at least one photosensitizer, such that the at least one OSC polymer is a diketopyrrolopyrrole-fused thiophene polymeric material, wherein the fused thiophene is beta-substituted.

A display device includes a planarization layer disposed on a substrate, a first electrode disposed on the planarization layer and including silver (Ag), a contact preventing layer disposed on the first electrode, including a light absorbing material, and including a top surface and a side surface extending from an end of the top surface, and a pixel defining layer disposed on the contact preventing layer and including a bottom surface facing the top surface of the contact preventing layer, and a side surface extending from an end of the bottom surface. The first electrode includes a first region overlapping pixel defining layer. The contact preventing layer includes a second region overlapping the first region between the first electrode and the pixel defining layer. A first edge where the top and side surfaces of the contact preventing layer meet is located on the bottom surface of the pixel defining layer.