Dolphin view properties
Dolphin > Settings > Configure Dolphin > General; Behavior tab - View Properties: Remember view properties for each folder / Use common view properties for all folders.
Dolphin > View > Adjust View Properties > Apply View Properties To: Current folder / Current folder including all sub-folders / All folders
This information is from the https://lists.ubuntu.com/archives/kubuntu-devel/2010-July/004494.html
Open the Dolphin in the ~/.kde/share/apps/dolphin/view_properties/global/ (*1) and turn the Icons/Details/Columns/Preview/... on/off. The settings are saved to the ~/.kde/share/apps/dolphin/view_properties/global/.directory file and used as the global defaults - IF the local folder does not have own .directory file with the overriding settings.
KDE .directory file:
The .directory file is a KDE folder view properties file. It contains the folder viewing settings for a directory in KDE. It includes settings such as icon positions and view mode (icon, list, etc.). Automatically created when the view settings of a folder are modified. Hidden by default.
(*1) If the ~/.kde/share/apps/dolphin/view_properties/global/ directory does not exist, you could make it.