Patent ID: 11956906
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Surface technology, coating (Chemistry)
Classification: CPC B  H  G | IPC B  H

Claim 3:
4. A backboard support structure comprising a substrate support film and an adhesive layer that are arranged in a laminated manner,
wherein the substrate support film has a modulus of elasticity of about 1 GPa-10 GPa, and the adhesive layer has a modulus of elasticity of about 1 KPa-250 KPa,
the backboard support structure comprises a first bendable region and a first non-bent region, and the adhesive layer comprises a first portion located in the first bendable region and a second portion located in the first non-bent region,
a modulus of elasticity of the first portion is lower than a modulus of elasticity of the second portion, and the first portion has a modulus of elasticity of about 1 KPa-30 KPa, and the second portion has a modulus of elasticity of about 150 KPa-250 KPa,
wherein the substrate support film has a thickness of about 20 μm-60 μm, and the adhesive layer has a thickness of about 10 μm-50 μm,
wherein the backboard support structure comprises a body region and a peripheral region, the adhesive layer comprises a third portion located in the body region and a fourth portion located in the peripheral region,
wherein the backboard support structure further comprises a spacing layer, the spacing layer is located between the adhesive layer and the substrate support film and is located in both of the body region and the peripheral region, and
the spacing layer comprises a protrusion structure located in the peripheral region and protruding towards the adhesive layer, and a surface of the adhesive layer away from the spacing layer is a flat surface, so that a thickness of the fourth portion of the adhesive layer is smaller than a thickness of the third portion of the adhesive layer,
wherein the spacing layer has a modulus of elasticity of about 1 GPa-4 GPa, and
wherein the protrusion structure has a protrusion height of about 10 μm-20 μm.