Color-changeable OLED device and preparation method therefor

A device and ultra-thin technology, applied in the field of organic light-emitting diode components, can solve the problems of poor repeatability, high production cost, poor stability, etc., and achieve low roll-off, low turn-on voltage, and wide adjustable color gamut range. Effect

Inactive Publication Date: 2016-07-06
PEKING UNIV SHENZHEN GRADUATE SCHOOL
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a color-changing OLED device and its preparation method, which uses an ultra-thin light-emitting layer, consumes very little expensive l

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Embodiment Construction

[0035] The present invention provides a color-changing OLED device and a preparation method thereof. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0036] see figure 1 , figure 1 It is a schematic structural diagram of a preferred embodiment of a color-changing OLED device of the present invention. As shown in the figure, it includes an ITO glass 1, and the ITO glass 1 is sequentially attached with a hole injection layer 2 and a hole transport layer from the inside to the outside. 3. The first ultra-thin light-emitting layer 4, the intermediate energy transfer regulation layer 5, the second ultra-thin light-emitting layer 6, the electron transport layer 7, the electron injection layer 8, and the catho...

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Abstract

The invention discloses a color-changeable OLED device and a preparation method therefor. The color-changeable OLED device comprises ITO glass, wherein a hole injection layer, a hole transport layer, a first ultra-thin light emitting layer, an intermediate energy transfer regulation and control layer, a second ultra-thin light emitting layer, an electron transport layer, an electron injection layer, and a negative electrode are adhered to the ITO glass from inside to outside in sequence, wherein the first ultra-thin light emitting layer and the second ultra-thin light emitting layer are light emitting materials with different colors; and the intermediate energy transfer regulation and control layer is an main body organic material. The color-changeable OLED device provided by the invention adopts two kinds of ultra-thin light emitting bodies, and is prepared by a physical vapor deposition method; the prepared OLED device can realize wide adjustable color gamut range; and in addition, the OLED device has the characteristics of high efficiency, low roll-off and low cut-in voltage.

Description

technical field [0001] The invention relates to the field of organic light-emitting diode components, in particular to a color-changing OLED device and a preparation method thereof. Background technique [0002] Organic light-emitting diodes (OLEDs) are mainly made of organic light-emitting small molecules and high molecular polymers as light-emitting materials, and are prepared by evaporation or spin coating. At present, OLED lighting products and OLED display panels have been mass-produced. In an OLED display panel, a pixel is usually composed of three-color (red, green, blue) OLED base components, so as to realize the function of color adjustment and color display. Color-tunable light-emitting diodes (CT-OLEDs) can achieve color-tunable functions in a single OLED device, which not only greatly simplifies the fabrication process, especially the complex mask fabrication process, thereby reducing the high OLED fabrication cost , and can minimize pixels to improve the resolu...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/52H01L51/56
CPCH10K50/125H10K50/131H10K50/80H10K50/11H10K2102/302H10K71/00
Inventor 徐汀何谷峰孟鸿
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
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