Manufacturing method of adhesive layer and display device comprising the adhesive layer manufactured thereby

A manufacturing method of an adhesive layer, the method comprising:

• providing a preliminary adhesive layer;
• attaching a mask to a first area portion of the preliminary adhesive layer;
• contacting a second area portion of the preliminary adhesive layer that is adjacent to the first area portion, and to which the mask is not attached, with a removal solution comprising a silicon-containing compound and a solvent, and
• removing the mask from the first area portion, whereby an adhesion force of the contacted second area portion is less than an adhesion force of the first area portion of the preliminary adhesive layer,
• wherein the silicon-containing compound comprises a compound represented by Formula 2 below;
• wherein, in Formula 2,
• Y is Cl, Br, I, or OR14, and
• R11 to R14 are each independently a hydrogen atom, a halogen atom, a substituted or unsubstitued alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms.