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72results about How to "Reduce step difference" patented technology

Display substrate, method of manufacturing the same, and display panel having the same

A display panel includes a base substrate having a plurality of pixel areas, in which each pixel area includes a plurality of sub-pixel areas, a light blocking layer pattern generally defining the sub-pixel areas, and a plurality of color filter patterns. Upper surfaces of the light blocking layer pattern and the plurality of color filter patterns collectively form a generally flat surface.
Owner:SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD

Production method for array substrate of active-matrix organic light-emitting display (OLED)

The invention discloses a production method for an array substrate of an active-matrix organic light-emitting display (OLED). The production method comprises the following steps of: providing a substrate; forming a first semiconductor graph and a second semiconductor graph on the substrate; continuing to form a grid insulating layer and a first metal layer, and forming a grid by photo-etching; depositing an interlayer insulating layer, and forming four contact holes by means of etching; continuing to form a second metal layer, a source, a drain and a storage capacitor electrode; then continuing to form a passivation insulating layer and a transparent electrode layer; and finally forming a protecting film layer and an evaporation material layer on the whole surface, and exposing by a multi-grey-scale mask plate to form a stepped protecting film layer. In the production method for the array substrate of the OLED provided by the invention, the multi-grey-scale mask plate is used for exposing to form the stepped protecting film layer, thus effectively reducing the step difference of the protecting film layer and decreasing the occurrence probability of the poor display of the point defects of an AMOLED (active-matrix/organic light-emitting diode), and then improving the display quality of the AMOLED.
Owner:KUNSHAN NEW FLAT PANEL DISPLAY TECH CENT

Organic TFT, method of manufacturing the same and flat panel display device having the same

An organic thin film transistor (TFT), a method of making and a display including the organic TFT. In the TFT, the disconnection of a channel region does not occur because a step difference between a substrate and source and drain electrodes is lessened or eliminated by forming the source and drain electrodes in grooves in a buffer film. The method of manufacturing the organic TFT includes forming a buffer film on a substrate, forming concave units separated by a distance from each other in the buffer film by etching the buffer film, forming an electrode layer on the buffer film, forming source and drain electrodes within the concave units by etching the electrode layer using a photolithography process, forming a semiconductor layer on the source and drain electrodes and on the buffer film, forming a gate insulating film on the semiconductor layer and forming a gate electrode on the gate insulating film.
Owner:SAMSUNG DISPLAY CO LTD
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