A substrate comprising: a base layer (10; 1000); a black layer (30; 2000) formed on the base layer (10; 1000); and column spacers formed on the black layer (30; 2000), wherein the loss rate of spacers measured by a peel test on the surface of the base layer (10; 1000) on which the spacers are formed is 15% or less, wherein the black layer (30; 3000) is a metal layer of a metal having a physical ductility value of 0.55 or more, a metal oxide layer of a metal having a physical ductility value of 0.55 or more, a metal nitride layer of a metal having a physical ductility value of 0.55 or more or a metal oxynitride layer of a metal having a physical ductility value of 0.55 or more, or has a laminate structure of two or more of the foregoing, wherein the column spacer and the black layer (30; 2000) are overlapped with each other when viewed from the top or the bottom and a ratio (T/B) of an area of the bottom of the column spacer relative to an area of the black layer (30; 3000) is from 0.5 to 1.5, wherein the peel test is performed by: - attaching a Nichiban Tape CT-24 as a pressure-sensitive adhesive tape on the surface of the base layer (10; 1000) on which the spacers are formed with a rectangular attachment area of 24 mm in width and 40 mm in length, wherein the Nichiban Tape CT-24 has a peel force of 3.72 N/10 mm to 4.16 N/10 mm as measured at a peel angle of 180 degrees in accordance with JIS Z 1522 standard; and - then peeling off the Nichiban tape CT-24 in a longitudinal direction at a peel rate of 30 mm/s and a peel angle of 180 degrees. a base layer (10; 1000); a black layer (30; 2000) formed on the base layer (10; 1000); and column spacers formed on the black layer (30; 2000), wherein the loss rate of spacers measured by a peel test on the surface of the base layer (10; 1000) on which the spacers are formed is 15% or less, wherein the black layer (30; 3000) is a metal layer of a metal having a physical ductility value of 0.55 or more, a metal oxide layer of a metal having a physical ductility value of 0.55 or more, a metal nitride layer of a metal having a physical ductility value of 0.55 or more or a metal oxynitride layer of a metal having a physical ductility value of 0.55 or more, or has a laminate structure of two or more of the foregoing, wherein the column spacer and the black layer (30; 2000) are overlapped with each other when viewed from the top or the bottom and a ratio (T/B) of an area of the bottom of the column spacer relative to an area of the black layer (30; 3000) is from 0.5 to 1.5, wherein the peel test is performed by: - attaching a Nichiban Tape CT-24 as a pressure-sensitive adhesive tape on the surface of the base layer (10; 1000) on which the spacers are formed with a rectangular attachment area of 24 mm in width and 40 mm in length, wherein the Nichiban Tape CT-24 has a peel force of 3.72 N/10 mm to 4.16 N/10 mm as measured at a peel angle of 180 degrees in accordance with JIS Z 1522 standard; and - then peeling off the Nichiban tape CT-24 in a longitudinal direction at a peel rate of 30 mm/s and a peel angle of 180 degrees. - attaching a Nichiban Tape CT-24 as a pressure-sensitive adhesive tape on the surface of the base layer (10; 1000) on which the spacers are formed with a rectangular attachment area of 24 mm in width and 40 mm in length, wherein the Nichiban Tape CT-24 has a peel force of 3.72 N/10 mm to 4.16 N/10 mm as measured at a peel angle of 180 degrees in accordance with JIS Z 1522 standard; and - then peeling off the Nichiban tape CT-24 in a longitudinal direction at a peel rate of 30 mm/s and a peel angle of 180 degrees.