Flexible display is drawing attention because of its advantages that it is thin like a paper, and can be bent and rolled without the damage through the substrate. As the display technology that can be integrated to the flexible display, OLED is being regarded as the one of the most likely candidates. The basic structure of flexible OLED consists of flexible substrate, which is needed to be the bendable or rollable form, TFT device that drives each pixel, light-emitting OLED, and thin-film encapsulation that blocks moisture and oxygen for the long lifetime of OLED. Recently, the leading companies’ research on the core technology is accelerating and the patent barrier of the product structure (the basic concept) and the individual components of flexible OLED is strengthening, and it is not easy to find the source patent from many patents.

Is the source patent of flexible OLED structure valid?
The report examined prior art that has been reviewed in the patent examination in details by selecting “issue patent,” and also traced the source of flexible OLED structure patents by encompassing 40 patents that have been cited in the “issue patent.”

In particular, main point analysis of flexible OLED structure-related key patents (16 patents), extracted from the citation analysis, and the presentation of yearly technology trend are configured to help setting the direction of R&D, patent application, and corresponding patent disputes.