The utility model provides a caution board including a rating plate, a luminous caution device, an acoustic caution device and a caution control unit. The utility model has the advantages that the caution board with an audible-visual device has a simple structure, and is easy to identify and availab.....
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本發明可應用於顯示器, 街燈, LCD背光, 照明系統等。本實用新型公開了一種有機電致發光器件(OLED), 摻雜熱穩定性高及傳輸能力佳的空穴注入材料,可降低器件的驅動電壓,提高發光效率, 且空穴注入層的厚度不影響器件的性能,從而減少由於氣化物透明陽極薄膜材料表面粗糙而對OLED器件壽命的影響.
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