Organic light emitting diode and electronic equipment

A technology of light-emitting diodes and light-emitting sub-layers, which is applied in the direction of organic light-emitting devices, organic light-emitting device structures, organic semiconductor devices, etc., can solve problems such as high voltage, high power consumption, and increased process complexity with the number of layers, so as to reduce the working voltage , The effect of reducing the number of layers and reducing power consumption

Active Publication Date: 2014-04-09

HEFEI BOE OPTOELECTRONICS TECH +1

4 Cites 4 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0005] It can be found that the OLED with the above-mentioned multi-layer light-emitting structure includes a large number of device layers. In order to drive holes/electrons ...

Method used

2, the layer number of the OLED of the embodiment of the present invention reduces, has reduced the process complexity of making;

This patent adopts hollow structure to the first light-emitting layer of device, is blue light light-emitting layer, and the second light-emitting layer directly contacts with electron transport layer and hole transport layer, helps to reduce operating voltage like this, helps blue light The light output of the first light-emitting layer is generally red or orange light material, which will generate energy transfer with the blue light material of the second light-emitting layer, and the red light or orange light can be smoothly emitted from the device. White OLED devices with different specifications can be obtained by adjusting the area of the hollow structure and the thickness of each film layer.

[0029] In the OLED and the electronic device of the embodiment of the present invention, the light-emitting sub-layers that emit light of different colors are combined together by means of fitting, and electrons and holes can enter different sub-layers in the light-emitting layer, thereby making different The light-emitting sub-layer emits light of different colors, and forms light of a new color after mixing, omitting the spacer layer in the OLED of the existing multi-layer light-emitting structure, so the number of layers of the OLED is reduced, th...

Abstract

The invention discloses an organic light emitting diode and a set of electronic equipment. The organic light emitting diode comprises a first carrier transport layer and a second carrier transport layer which are arranged opposite to each other and a light emitting layer. The light emitting layer comprises a first surface and a second surface which are opposite to each other, carriers transported by the first carrier transport layer enter the light emitting layer through the first surface, and carriers transported by the second carrier transport layer enter the light emitting layer through the second surface. The light emitting layer comprises a first light emitting sub-layer and a second light emitting sub-layer, wherein the first light emitting sub-layer is of a hollow structure, the second light emitting sub-layer comprises a body part and a protruding part, the protruding part protrudes out of the body part and is contained in the hollow structure, the surface of the first light emitting sub-layer and the surface of the protruding part form the first surface of the light emitting layer, and the surface of the body part forms the second surface of the light emitting layer. According to the organic light emitting diode and the electronic equipment, the working voltage is lowered, the power consumption is reduced, and the manufacturing technology is also simplified because the number of layers is reduced.

Application Domain

Solid-state devicesSemiconductor/solid-state device manufacturing +1

Technology Topic

Charge carrierVoltage +8

Image

Examples

Experimental program(1)

Example Embodiment

[0073] The preparation of the above-mentioned light-emitting layer is introduced as follows.

[0074] Such as figure 2 As shown, if the second light-emitting sub-layer is closer to the glass substrate, the preparation of the light-emitting layer at this time includes the following steps:

[0075] Firstly, a second luminescent material layer is formed;

[0076] Then pass the MASK process once to get such figure 2 The protrusion shown;

[0077] Finally, the first luminescent material layer is formed, and since part of the area is blocked by the protrusions, a hollow structure is naturally formed.

[0078] If the first light-emitting sub-layer is closer to the glass substrate, the preparation of the light-emitting layer includes the following steps:

[0079] First, the first luminescent material layer is formed;

[0080] Then through a mask process or printing process, you can get such figure 2 The shown first light-emitting layer with a hollow structure;

[0081] Finally, the second luminescent material layer is formed. Since the first luminescent layer has a hollow structure, when the second luminescent material layer is formed, the hollow structure is naturally filled with the second luminescent material to form figure 2 The second light-emitting sublayer with protrusions is shown.

[0082] Of course, other layers need to be fabricated to prepare the OLED, but they are completely the same as the prior art and will not be described in further detail here.

PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.

Classification and recommendation of technical efficacy words

Reduce the number of layers
low working voltage

Organic light emitting diode and electronic equipment

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

PUM

Description & Claims & Application Information

Similar technology patents

Double-sided liquid crystal display panel and double-sided display

Touch display panel, touch detection method thereof and electronic equipment

Ceramic shell for single-crystal high-temperature alloy blade and preparation method of ceramic shell

Manufacturing method of plastic fuel tank containing EVOH (Ethylene-Vinyl Alcohol Copolymer) barrier layer

Printed circuit board processing method and printed circuit board

Classification and recommendation of technical efficacy words

Pressure-control well-drilling method and device based two gradients

Preparation scheme of novel high-transmittance vanadium dioxide thin film element

PVOH coating film with high peel strength and preparation method thereof

Graphene oxide composite film material, and preparation method and application thereof

Touch panel, manufacturing method and touch device

High-precision low-voltage voltage/current switching circuit

Ionized gas sensor microarray structure based on micro-electronic fabrication technology

Organic electroluminescent device and preparation method thereof

Non-aqueous electrolyte battery

Light-emitting diode structure with indium-containing conductive layer and preparation method therefor