Patent ID: 11972629
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 7:
8. The texture recognition apparatus according to claim 6, wherein
with respect to one photosensitive element, at least two first openings and at least two light shielding patterns that are provided correspondingly, in the first direction parallel to the touch side surface, a length of the light shielding pattern is D, a distance between two adjacent light shielding patterns is P, a length of the first opening is d2; and in the direction perpendicular to the touch side surface, a distance from the light shielding pattern to the light shielding layer is H, then:

D=d2+2H×tan θ1,

P=H×(tan θ1+tan θ2),

where θ1 is a minimum critical angle of the optical path for texture recognition, and θ2 is a maximum critical angle of the optical path for texture recognition.