Patent ID: 11909949
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. The display panel according to claim 2, further comprising m layers between the cylindrical lens and the sub-pixel unit, wherein
a distance H between a vertex of a cylindrical surface of the cylindrical lens and a surface of the sub-pixel unit away from the back plate, satisfies:

h/n+h1/n1+h2/n2+ . . . +hm/nm=f;H=h+h1+h2+ . . . +hm, 

where h is a thickness of the cylindrical lens, and n is the refractive index of the cylindrical lens; h1 is a thickness of a first layer between the cylindrical lens and the sub-pixel unit, and n1 is a refractive index of the first layer; h2 is a thickness of a second layer between the cylindrical lens and the sub-pixel unit, and n2 is a refractive index of the second layer; hm is a thickness of an mth layer between the cylindrical lens and the sub-pixel unit, and nm is a refractive index of the mth layer; and f is the focal length of the cylindrical lens.