Wuhan Tianma Micro-electronics Co., Ltd

Shanghai Tianma Am-oled Co., Ltd.

Tiezhen Gao

Jinghua Niu

Wei Gao

Shuang Cheng

Yinhe Liu

Mingzhi Dai

Yibin Xing

Ruixuan Dang

The present disclosure provides an azulene ring-containing compound, its use, and an organic photoelectric device including the same. The azulene ring-containing compound is a compound comprising a structure of Formula I. The organic photoelectric device includes an anode, a cathode, and one or more organic thin film layers located between the anode and the cathode; and at least one of the organic thin film layers contains the above-mentioned azulene ring-containing compound comprising the structure of Formula I. The azulene ring-containing compound provided by the present disclosure has an energy level difference &#x394;Est&#x2264;0.3 eV between the lowest singlet state Sand the lowest triplet state T, and has a light-emitting mechanism of a thermally activated delayed fluorescent material, and can be used as a thermally activated delayed fluorescent material for organic photoelectric device, so that the light-emitting efficiency of the device is improved.

Azulene ring-containing compound, its use, and an organic photoelectric device including the same

Provided are a vehicle instrument, a display method, and a vehicle speed monitoring display system. The vehicle instrument includes a display panel including an indicator structure used together with a scale on the dial for reading; a dial exposed by the display panel; and an actuating mechanism connected to the display panel and configured to control a movement of the display panel relative to the dial. The vehicle instrument has a first state, in which the display panel and the dial are in a first positional relationship, the display panel displays a first pattern region, and the first pattern region and the dial are in a second positional relationship; and a second state, in which the display panel and the dial are in a third positional relationship, the display panel displays the first pattern region, and the first pattern region and the dial are in the second positional relationship.

Vehicle instrument, display method of the same, and vehicle speed monitoring display system

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Shanghai, China

Tiezhen Gao