Organic electroluminescence display panel and display device

An electroluminescent display and display panel technology, applied in circuits, electrical components, electrical solid devices, etc., can solve problems such as voltage increase, and achieve the effects of low power consumption, long-term stable driving voltage, and high luminous efficiency
CN107579160BActive Publication Date: 2020-03-17WUHAN TIANMA MICRO ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN TIANMA MICRO ELECTRONICS CO LTD
Publication Date
2020-03-17

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Abstract

The present invention relates to the field of display technology, and discloses an organic electroluminescence display panel. The organic electroluminescence display panel includes a cathode layer, an anode layer, and at least Two light-emitting units; wherein, a charge generation layer is provided between at least one pair of adjacent light-emitting units, and the charge generation layer includes a P-doped layer near the cathode layer and a P-doped layer near the anode layer. An N-doped layer, and an intermediate layer located between the P-doped layer and the N-doped layer; the electron mobility of the intermediate layer is greater than the electron mobility of the host material of the N-doped layer, and / Or, the hole mobility of the intermediate layer is greater than the hole mobility of the host material of the P-doped layer. The organic electroluminescent display panel provided by the embodiments of the present invention has a long-term stable driving voltage and low power consumption, a long service life, and high luminous efficiency.
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Description

technical field

[0001] The invention relates to the field of display technology, in particular to an organic electroluminescent display panel and a display device. Background technique

[0002] Existing white light organic electroluminescent display devices (OLEDs) are mainly based on red-green-blue (R-G-B) three-color or blue-yellow (B-Y) two-color light-emitting units by adjusting the ratio of light-emitting brightness to form white light. At present, white light OLEDs usually adopt a series stacked structure, for example, a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit are connected in series; and, in order to improve the efficiency of OLED devices, charge is generally added between different light-emitting layers Generate layer (CGL, Chargegeneration layer).

[0003] Usually, the CGL layer includes a direct contact N-doping layer (N-doping CGL) and P-doping layer (P-doping CGL) two-layer structure, that is, P-N type CGL, however, du...

Claims

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