High-color-rendering LED and production method thereof
A high color rendering and integrated technology, applied in the direction of electrical components, electrical solid devices, circuits, etc., can solve the problems of easy color temperature, low color rendering, inconsistent chip attenuation, etc., and achieve the effect of improving color rendering
Pending Publication Date: 2020-01-03
天津宝坻紫荆创新研究院
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The white light source with multi-chip package is prone to color temperature drift due to the inconsistent attenuation of various chips.
The white light source of blue light single-chip composite phosphor is prone to the problem of too much blue light and low color rendering
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
Embodiment 1
[0025] This embodiment provides a high color rendering LED, its structure is as follows figure 1 shown. The LED includes a red chip with a wavelength of 630 nanometers, a green chip with a wavelength of 550 nanometers, and two blue chips with a wavelength of 460 nanometers, wherein the rated operating current of the above four chips is the same, such as 20mA, 150mA, 200mA or 300mA .
[0026] Four chips are connected in series and fixed on the flat support, and the two blue chips are covered with yellow YAG phosphor. The LED is packaged as a whole through a transparent encapsulation glue.
[0027] This LED is produced by the following steps:
[0028] 1. Fix a 630nm band red chip, a 550nm green chip, and two 460nm blue chips on the flat support;
[0029] 2. Connect each chip in series;
[0030] 3. Cover the YAG phosphor on the 460nm blue chip;
[0031] 4. Use transparent encapsulation glue as the overall encapsulation of the light-emitting module to obtain LEDs.
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
Login to View More Abstract
The invention provides a high-color-rendering LED and a production method thereof. The high-color-rendering LED comprises a red light chip in a nano band of 605-650 nm, a green light chip in a nano band of 525-555 nm, and two blue light chips in a nano band of 450-475 nm, wherein the rated working currents of the red light chip, the green light chip and the blue light chips are the same or equal,the four chips are connected in series, and the two blue light chips are covered with yellow light YAG fluorescent powder. The preparation method of the high-color-rendering LED comprises the following steps: fixing a red light chip, a green light chip and two blue light chips; binding the chips in series; covering the blue light chips with yellow light YAG fluorescent powder; and integrally packaging a light emitting module by using transparent packaging adhesive to obtain the high-color-rendering LED. According to the LED light source, green light and red light are added, the proportion of blue light is naturally reduced, the color rendering property is naturally improved, and the color rendering property is 95 or above.
Description
technical field [0001] The invention relates to a high color rendering LED and a production method thereof, belonging to the technical field of LED preparation. Background technique [0002] LED white light sources generally adopt a synthetic method, one is a combination of multiple chips that emit different colors of light to form a white light source, and the other is a single-color chip combined with phosphor powder to form a white light source. [0003] The white light source with multi-chip package is prone to color temperature drift due to the inconsistent attenuation of various chips. The white light source of blue light single-chip composite phosphor is prone to the problem of too much blue light and low color rendering. Contents of the invention [0004] In order to solve the above-mentioned technical problems, the object of the present invention is to provide an LED whose color rendering can be improved to above 90%. [0005] In order to achieve the above objec...
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 IPC IPC(8): H01L25/075H01L33/50H01L33/48
CPCH01L25/0753H01L33/48H01L33/502H01L2933/0033
Inventor 易汉平周虎
Owner 天津宝坻紫荆创新研究院