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An AC-driven white OLED device with quantum well structure

An AC drive and quantum well technology, which is applied in the manufacture of electric solid-state devices, semiconductor devices, semiconductor/solid-state devices, etc., can solve problems such as the need to improve the luminous brightness, so as to improve the efficiency of OLED devices, improve device performance, and improve high-spectrum stability. sexual effect

Active Publication Date: 2020-05-12
武汉华美晨曦光电有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The luminescence of the device is due to the combination of electrons and holes to form excitons and excite the luminescent molecules, and the luminescent molecules undergo radiation relaxation to emit visible light; the luminance of the current AC-driven white OLED devices still needs to be improved

Method used

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  • An AC-driven white OLED device with quantum well structure
  • An AC-driven white OLED device with quantum well structure
  • An AC-driven white OLED device with quantum well structure

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0023] refer to figure 1 As shown, it is a cross-sectional view of an embodiment of an AC-driven white OLED device with a quantum well structure provided by the present invention; the AC-driven white OLED device is a stacked structure, including two independent light-emitting units 210, 310 and a light-emitting surface 110 , an electrode connection layer 128 is provided between the first light ...

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Abstract

The invention belongs to the technical field of AC OLED devices, and discloses an AC-driven white OLED device with a quantum well structure, which includes conductive anodes sequentially deposited on the light-emitting surface, two independent AC light-emitting units and two AC light-emitting units. The electrode connection layer between the units constitutes a sandwich structure and a conductive cathode; the AC luminescent unit includes a sequentially deposited hole injection layer, a hole transport layer, a quantum well structure, an electron transport layer, and an electron injection layer; through the conductive anode, the electrode An AC signal is applied between the connection layer and the conductive cathode to drive two independent AC light-emitting units. The polarity of the AC voltage applied to the conductive anode and the conductive cathode is opposite to that of the AC voltage applied to the electrode connection layer, and the positive half cycle of the AC signal An AC light-emitting unit is driven, and the negative half cycle of the AC signal drives another AC light-emitting unit; the OLED device has improved device luminous efficiency, high spectral stability, and efficiency roll-off at high current densities.

Description

technical field [0001] The invention belongs to the technical field of AC OLED devices, in particular to an AC-driven white OLED device with a quantum well structure. Background technique [0002] Organic light-emitting diode (OLED) is a promising lighting and display device with excellent performance. In the field of OLED lighting, the device has the characteristics of low heat generation, low power consumption, fast response, bendability, impact resistance, and has the characteristics of light and thin, surface-emitting, and good ductility. The device part can bring new design concepts to the lighting field. The application of OLED to the lighting field has a huge prospect and is expected to become the mainstream of lighting in the future. [0003] In recent years, with the development of semiconductor lighting technology, various light-emitting device structures have been proposed, and AC-driven OLED device technology is one of them. AC-driven OLED devices have better b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/50H05B45/30H05B44/00
CPCH05B45/60H10K50/131H10K50/13Y02B20/30
Inventor 王亮刘纪文金凌
Owner 武汉华美晨曦光电有限责任公司