A kind of electroluminescence device and preparation method thereof
A technology for electroluminescent devices and light-emitting layers, which is applied in the fields of electro-solid devices, semiconductor/solid-state device manufacturing, electrical components, etc. The light emitting rate of the device and other issues can enhance the scattering effect, increase the viewing angle, and improve the visual experience.
Active Publication Date: 2020-06-02
SHENZHEN ROYOLE DISPLAY TECH CO LTD
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The electroluminescent device is affected by factors such as reflection and refraction of the glass substrate and the air surface layer. Most of the light generated by the light-emitting functional layer cannot escape to the light-emitting surface of the electroluminescent device, but will be emitted from the side of the light-emitting surface. As a result, the light output rate of the electroluminescent device is lower
Usually, in order to improve the light extraction rate of the electroluminescent device, a multi-layer light extraction layer with a sequentially increasing refractive index is prepared on the surface of the cathode layer to extract the light generated by the luminescent functional layer and increase the light output rate of the electroluminescent device; however , usually the surface of the light extraction layer is flat, so that the angle of light emitted from the electroluminescent device is limited, and the viewing angle of the display screen prepared by it is small, which affects the user's visual experience
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
preparation example Construction
[0058] Please refer to Figure 5 , Figure 5 It is a schematic flow chart of a preferred embodiment of the preparation method of the electroluminescent device provided in the embodiment of the present invention. can and refer to figure 1 As shown in the electroluminescent device, the preparation method of the electroluminescent device comprises the following steps:
[0059] Step S501 : providing a base substrate 10 .
[0060] It can be understood that the base substrate 10 may be a glass substrate, a transparent polymer flexible substrate, or the like.
[0061] Step S502 : sequentially preparing the first electrode layer 11 , the light emitting layer 12 and the second electrode layer 13 on the base substrate 10 .
[0062] Wherein, the first electrode layer 11 is used to output holes under voltage driving, and the second electrode layer 13 is used to output electrons under voltage driving; Light is produced under the excitation of the holes and electrons of the second elec...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
An electroluminescent device, comprising a first electrode layer (11), a light-emitting layer (12), a second electrode layer (13) and a light extraction layer (14), wherein the light extraction layer (14) includes oppositely arranged light extraction layers A surface (1001) and a light diffusion surface (1002), wherein the light extraction surface (1001) is used to guide the light generated by the light emitting layer (12) to the light extraction surface through the first electrode layer (11) or the second electrode layer (13). Layer (14), the light diffusion surface (1002) is used to reflect the light transmitted to the light extraction layer (14) into the air above the light diffusion surface (1002), which can enhance the scattering of light generated by the light emitting layer (12) The function can increase the viewing angle of the display screen prepared by it and improve the visual experience of the user.
Description
technical field [0001] The invention relates to the technical field of semiconductors, in particular to an electroluminescence device and a preparation method thereof. Background technique [0002] The electroluminescent device may include an organic light-emitting diode (Organic Light-Emitting Diode, OLED), a polymer electroluminescent device (polymer Light-Emitting Diode, PLED) and an inorganic electroluminescent device, and may be applied to a display screen. The electroluminescent device is affected by factors such as reflection and refraction of the glass substrate and the air surface layer. Most of the light generated by the light-emitting functional layer cannot escape to the light-emitting surface of the electroluminescent device, but will be emitted from the side of the light-emitting surface. Therefore, the light extraction rate of the electroluminescent device is lower. Usually, in order to improve the light extraction rate of the electroluminescent device, a mul...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/50H01L51/52H01L51/56
CPCH10K50/854H10K71/00
Inventor 张磊
Owner SHENZHEN ROYOLE DISPLAY TECH CO LTD