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White-light OLED display screen and tandem type white-light organic light emitting diode thereof

A light-emitting diode, series-type technology, applied in the direction of organic light-emitting devices, organic light-emitting device manufacturing/processing, diodes, etc., to achieve the effect of enhancing blue light

Active Publication Date: 2015-03-04
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a white light OLED display pole and its tandem white organic light-emitting diode, so as to solve the technical problem of how to enhance the blue light of the tandem WOLED to realize cool white light in the prior art

Method used

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  • White-light OLED display screen and tandem type white-light organic light emitting diode thereof
  • White-light OLED display screen and tandem type white-light organic light emitting diode thereof
  • White-light OLED display screen and tandem type white-light organic light emitting diode thereof

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. In particular, the following examples are only used to illustrate the present invention, but not to limit the scope of the present invention. Similarly, the following embodiments are only some of the embodiments of the present invention rather than all embodiments, and all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0020] see figure 1 , figure 1 It is a schematic diagram of the structure of the tandem white organic light emitting diode of the present invention. The tandem white organic light emitting diode 100 of the present invention includes an anode 1 , a first light emitting unit 2 , an intermediate charge generation layer 3 , a second light emitting unit 4 and a cathode 5 sequentially stacked in series.

[0021] The connection layer of the p...

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Abstract

The invention discloses a tandem type white-light organic light emitting diode. The tandem type white-light organic light emitting diode comprises an anode, a first light emitting unit, a middle electron transfer layer, a connecting layer, a middle cavity transfer layer, a second light emitting unit and a cathode which are sequentially overlapped and connected in series, wherein the first light emitting unit is used for emitting blue light; the second light emitting layer is used for emitting yellow light; or the first light emitting unit is used for emitting white light and the second light emitting layer is used for emitting white light; the middle electron transfer layer adopts Bphen doped with active metals of which the work function is lower than 3eV so as to absorb an electron transfer material of which the peak position is larger than 490nm or smaller than 440nm in the middle electron transfer layer, and thus absorption of blue light is avoided, and the blue light of the tandem type white-light organic light emitting diode is enhanced, so the aim of emitting cold white light is realized.

Description

technical field [0001] The invention relates to the technical field of liquid crystal displays, in particular to a tandem white organic light emitting diode and a white OLED display using the tandem white organic light emitting diode. Background technique [0002] OLED is an Organic Light-Emitting Diode (Organic Light-Emitting Diode), which has the advantages of self-illumination, high color saturation, and high contrast. It is the core of the next-generation flat panel display technology and flexible display technology. At present, small-sized OLED displays have been used in mobile phones and tablet computers, and their cost is already close to that of liquid crystal displays. However, large-size OLED display screens still have outstanding problems such as high cost and short lifespan, which affect the competition with large-size LCD screens. [0003] At present, the most promising technology route for large-size OLED displays is WOLED (white light OLED) + CF substrate, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/54H01L27/32H10K99/00
CPCH10K59/86H10K85/00H10K50/16H10K50/165H10K59/10H10K2102/00H10K59/32H10K85/342H10K50/13H10K50/15H10K50/11H10K50/19H10K2102/351H10K85/633H10K50/81H10K50/82H10K85/60H10K85/636H10K85/6572H10K85/626H10K2102/103
Inventor 李先杰邹清华
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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