How to create grid texture in Photoshop?
Just
• create a new document with the dimensions you want your grid to be (in pixels)
• Select > All
• nudge the Selection to the right and down as many pixels as you want the grid lines to be thick
• Select > Inverse
• fill with the intended color
• Select > Deselect
• Edit > Define Pattern
• then use the Pattern as a Pattern Layer or Fill
North America
Europe, Middle East and Africa
Asia Pacific