White light emitting diode device and manufacturing method thereof
A technology for a light-emitting diode and a manufacturing method, which is applied in the manufacture of semiconductor/solid-state devices, electric solid-state devices, semiconductor devices, etc., can solve the problems of high white light color purity, difficult to control doping concentration, and low yield.
Inactive Publication Date: 2020-09-29
SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology
Among them, white light organic light-emitting diodes with a single light-emitting layer generally achieve mixed white light by doping a certain ratio of light-emitting materials of different colors, and the doping concentration of light-emitting materials in such white light organic light-emitting diodes with a single light-emitting layer is difficult to control , there is interference between different luminescent materials, it is difficult to obtain a higher color purity of white light
White organic light-emitting diodes with multiple light-emitting layers—generally stack red, green, and blue primary color materials to form white light. The preparation process of white light organic light-emitting diodes with multiple light-emitting layers is complicated and the yield rate is low. Mutual absorption, resulting in poor luminous efficiency
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[0022] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced. Furthermore, the directional terms mentioned in the present invention are, for example, up, down, top, bottom, front, back, left, right, inside, outside, side, surrounding, central, horizontal, transverse, vertical, longitudinal, axial, The radial direction, the uppermost layer or the lowermost layer, etc. are only directions referring to the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.
[0023] Please refer to figure 1 Shown is a schematic diagram of a preferred embodiment of the white light emitting diode device of the present invention. Wherein said white light emitting diode device comprises a substrate 2, an anode layer 3, a hole injection layer 4, a hole transport layer 5, a light ...
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Abstract
The invention discloses a white light emitting diode device and a manufacturing method thereof. The white light emitting diode device comprises an anode layer, a cathode layer and a light emitting layer, wherein the anode layer and the cathode layer are oppositely arranged, the light-emitting layer is located between the anode layer and the cathode layer, the light-emitting layer comprises an inorganic fluorescent material and an organic fluorescent material, and the wavelength of light emitted by the inorganic material is different from the wavelength of reflected light of the organic material. Through the design that the light-emitting layer contains the inorganic fluorescent material and the organic fluorescent material, the light-emitting layer of a single layer is compounded to generate white light, so that the color purity and the light-emitting efficiency of the white light are improved.
Description
technical field [0001] The invention relates to a light-emitting diode and a manufacturing method thereof, in particular to a white-light light-emitting diode device. Background technique [0002] With the development of the semiconductor industry, all-inorganic perovskite materials have rapidly become the next generation of new display light-emitting materials due to their structural diversity and excellent optoelectronic properties. At room temperature, the electronic transition of the general host material from the triplet excited state back to the ground state cannot emit light due to spin prohibition, and most of its energy is lost in the form of thermal relaxation, and only singlet excitons can be converted into photon. [0003] Traditional white organic light emitting diodes (white organic light emitting diodes, WOLEDs) are generally divided into two types: single emitting layer and multiple emitting layers. Among them, white light organic light-emitting diodes with...
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IPC IPC(8): H01L51/50H01L51/54H01L51/56
CPCH10K71/135H10K85/00H10K50/11H10K2101/40
Inventor 汪国杰
Owner SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD