Interesting question. Consider that the difference between the high brightness LEDs and the extremely diffuse OLED is mirrored by the behavior of the sky (sunlight vs scattered light). By differentiating the properties of diffuse and direct lighting, you might be able to create a very relatable or likeable illumination.

Thank for your answer! The difference between the light of LEDs and the diffused light of OLEDs is clear to understand. Then an appropriate optical mixing structure can solve the difference, such as the micro-optical structural lens or other special forms.

For OLEDs, we have white OLEDs, color OLEDs and transparent OLEDs. So once the transparent OLEDs combine with LEDs and daylights with an appropriate micro-optical structural lens, the optical mixing with an optimized color quality can be realized.

The biggest interest is their different behavior such as the temperature sensitivity for their brightness and color in short-term, the aging and degradation in long-term. When the problems are solved, the advantages of both LEDs and OLEDs are enhanced and their disadvantages will be compensated each other. Then, we will have a very good smart lighting system for both LEDs and OLEDs.

We can solve these problems. If we have international co-operation projects and necessary supports of industrial companies, the system will be realized.

Dear Vinh, you have essentially answered your own question. OLED and LED sources differ in many ways, and some of these are technological such as responses to ambient temperature, and others are physical differences in visual characteristics (diffuse vs. potentially directional illumination). Any "smart" system will need to incorporate lighting for the task(s) at hand regardless of the source, and include temporal control of lighting from different components to respond to what is happening in the environment. Arguably, a so-called "dumb" lighting system with overhead fluorescent troffers, in combination with a desk-mounted lamp, each on their own switch control, may be in fact a "smart" solution if it is easy for the occupant to understand and use. But I believe it all comes back to human needs first, and then the technological solutions can be developed.