{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9800868","patent":{"patent_number":"US-9800868","title":"Image-sticking inspection method for liquid crystal panel and device of the same","assignee":null,"inventors":[],"filing_date":"2016-06-02T00:00:00.000Z","publication_date":"2017-10-24T00:00:00.000Z","cpc_codes":["H04N","G06T","G06T","G06T","G06T","G06T"],"num_claims":8,"abstract":"An image-sticking inspection method and a device. The method includes: after displaying a standard checkerboard image for a period of time, changing to an image having a specified grayscale value and capturing a residual image; respectively performing a fourier transformation to the standard checkerboard and residual image to obtain a first and a second energy spectrum; respectively transforming the first and the second energy spectrum to polar coordinate; for polar angles from 0 to 2π, summing values of each first and second energy spectrum in the polar coordinate to obtain a checkerboard and an image-sticking energy spectrum; obtaining a characteristic frequency corresponding to a maximum value of the checkerboard energy spectrum; obtaining a first and a second energy value respectively corresponding to the characteristic and a zero frequency of the image-sticking energy spectrum; and dividing the first energy value by the second energy value to obtain an image-sticking evaluation value."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Image-sticking inspection method for liquid crystal panel and device of the same","description":"An image-sticking inspection method and a device. The method includes: after displaying a standard checkerboard image for a period of time, changing to an image having a specified grayscale value and ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9800868","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9800868","citation_suggestion":"Patentable. \"Image-sticking inspection method for liquid crystal panel and device of the same\" (US-9800868). https://patentable.app/patents/US-9800868","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9800868","json":"https://patentable.app/api/llm-context/US-9800868","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:40:58.559Z"}