2results about How to "Increase opening size" patented technology

The invention provides a transmission channel and vacuum processing equipment. The vacuum processing equipment comprises at least one cavity which can be vacuumized; the transmission channel penetrates through the side wall of the cavity and is used for transmitting a rectangular substrate to the base in the cavity; the outer surface of the transmission channel comprises an outer top surface and an outer bottom surface; the outer top face is an arc-shaped curved face protruding upwards, and / or the outer bottom face is an arc-shaped curved face protruding downwards. The transmission device has the advantages that the requirement for transmitting large-size thick substrates into a cavity of vacuum processing equipment can be met, stress concentration of a transmission channel can be effectively relieved under the condition that the volume of the cavity is not enlarged, and deformation of the transmission channel is reduced.

The invention discloses a display panel, a preparation method thereof and a display device. The display panel comprises a substrate and a pixel defining layer located on one side of the substrate, and a first opening is formed in the pixel defining layer; a light emitting device in the first opening; the packaging layer is located on one side, deviating from the substrate, of the pixel defining layer and the light-emitting device and is used for packaging the light-emitting device; the supporting layer and the black matrix are sequentially stacked on the side, away from the substrate, of the packaging layer, a third opening and a fourth opening are formed in the black matrix, the orthographic projection of the third opening on the substrate covers the orthographic projection of the first opening on the substrate, and the orthographic projection of the fourth opening on the substrate is not overlapped with the orthographic projection of the third opening on the substrate; the supporting layer is located in the fourth opening and makes contact with the peripheral side wall of the fourth opening. According to the display panel, the actual size of the fourth opening in the black matrix cannot be increased, and therefore it is guaranteed that the fourth opening area of the black matrix is not easily recognized by human eyes.