Abstract: The present disclosure relates to an OLED display substrate including a base substrate, a thin film transistor array layer and a planarization layer on the base substrate, and an anode, a pixel definition layer, a cathode, and a light emitting layer on a side of the planarization layer away from the base substrate, the pixel definition layer defining pixel regions, the light emitting layer being located on a side of the pixel definition layer away from the base substrate. The display substrate further includes a light guide that is in contact with the light emitting layer and is used to lead out light from the light emitting layer, so as to test the led-out light and adjust light emission.

Abstract: The present disclosure provides a cleaning assembly including a cleaning performing device. The cleaning performing device includes a cleaning module configured to clean a surface and a cleaning driving module configured to drive the cleaning module to move relative to the surface, a driving device configured to drive the cleaning performing device to be lifted or lowered, and a constraining structure configured to constrain a lifting or lowering trajectory of the cleaning performing device. The present disclosure further provides a cleaning apparatus. The cleaning performing device can be lifted or lowered according to an actual need, such that improves an adaptability of the cleaning apparatus. Further, the lifting or lowering trajectory of the cleaning performing device can be constrained by the constraining structure, such that improves a stability of the cleaning apparatus during moving up and down.

Abstract: The present disclosure provides a display panel, a method for preparing the same, and a display panel motherboard. The method for preparing the display panel includes: providing a support substrate; forming a base substrate on a surface of the support substrate; providing a mask plate on another surface; before forming a structure sensitive to laser irradiation on the base substrate, irradiating a surface of the support substrate with a laser, such that the at least one region irradiated by the laser is separated from the support substrate, and a region of the base substrate not irradiated by the laser remains bound to the support substrate, then forming a pixel structure in each of the display panel sub-region of the substrate, to obtain a display panel motherboard; and then cutting the display panel motherboard to obtain at least one separate display panel.

Abstract: The present disclosure provides an organic electroluminescent display backpanel, cover and device, wherein the backpanel comprises a backpanel body and a plurality of supporting columns, the backpanel body comprises a substrate and an array of organic electroluminescent elements formed on the substrate, and the supporting column is disposed at a side of the array of organic electroluminescent elements away from the substrate.

Abstract: A rolling apparatus, comprising a mounting bracket, a supporting platform and a rolling device; the mounting bracket is disposed above the supporting platform, and the rolling device is disposed on the mounting bracket so as to be located above the supporting platform; wherein the supporting platform is configured to support a display panel thereon; and the rolling device is configured to perform a rolling process on the display panel at a predetermined pressure. A rolling method, comprising supporting a display panel; and rolling the display panel at a predetermined pressure to cause an observable defection resulted from a foreign substance within the display panel. With the rolling apparatus and the rolling method, the display panel containing foreign substance will be detected as a defective product during the Cell Test so as not to enter the modular process, thereby avoiding any waste of module materials.

Abstract: The present invention provides an array substrate, a display panel and a display device, which can be used for solving the problem of an existing array substrate that ESD occurs between a data line and a repair line to cause short-circuiting of the data line and the repair line so as to pull down the voltage of the data line. The array substrate includes a plurality of main signal lines, at least one main repair line arranged to be crossed with and insulated from the main signal lines at the peripheral area of the array substrate, and a redundant repair line, and the redundant repair line is arranged to be insulated from the main repair line; wherein the redundant repair line includes at least one redundant repair part, and the resistance of each redundant repair part is smaller than the resistance of each main repair line.

Abstract: A method of fabricating a nanotube structure which includes providing a substrate, providing a mask region positioned on the substrate, patterning and etching through the mask region to form at least one trench, depositing a conductive material layer within the at least one trench, depositing a solvent based nanoparticle catalyst onto the conductive material layer within the at least one trench, removing the mask region and subsequent layers grown thereon using a lift-off process, and forming at least one nanotube electrically connected to the conductive material layer using chemical vapor deposition with a methane precursor.