White light LED device and preparation method thereof, and LED flashlight
An LED device, white light technology, applied in semiconductor devices, electrical components, circuits, etc., can solve the problem of low brightness, and achieve the effect of high brightness and high light-dark vision ratio
Inactive Publication Date: 2018-06-15
FOSHAN NATIONSTAR OPTOELECTRONICS CO LTD
View PDF4 Cites 14 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In view of this, an embodiment of the present invention provides a white light LED device and its preparation method, and an LED flashlight, so as to solve the technical problem of low brightness of white light LED devices under scotopic vision in the prior art
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 Construction
[0037] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be fully described below through specific implementation in combination with the drawings in the embodiments of the present invention. Apparently, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts, All fall within the protection scope of the present invention.
[0038] The white light LED device provided by the embodiment of the present invention includes a substrate, a blue light-emitting chip arranged on the substrate, and fluorescent glue covering the blue light-emitting chip; the fluorescent glue contains green phosphor, yellow-green phosphor and red phosphor, and the green phosphor , yellow-green phosphor and red p...
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 embodiments of the invention disclose a white light LED device and a preparation method thereof, and an LED flashlight, wherein the white light LED device comprises a substrate, a blue light emitting chip arranged on the substrate and fluorescent glue covering the blue light emitting chip of the substrate; the fluorescent glue comprises green fluorescent powder, yellow green fluorescent powderand red fluorescent powder; the green fluorescent powder, the yellow green fluorescent powder and the red fluorescent powder are uniformly mixed in the fluorescent glue according to a preset proportion, wherein the emission peak wavelength range of the green fluorescent powder is 490 nm-520 nm; the emission peak wavelength range of the yellow green fluorescent powder is 520 nm-550nm; the emissionpeak wavelength range of the red fluorescent powder is 605 nm-620 nm; the fluorescent glue comprises the green fluorescent powder, the yellow green fluorescent powder and the red fluorescent powder,and the blue light emitting chip excites the fluorescent glue to emit light, so that the light emitted by the white light LED device is guaranteed to have a relatively high light and shade visual ratio, and the brightness of the light emitted by the white light LED device under the shade vision is relatively high.
Description
technical field [0001] The embodiments of the present invention relate to the technical field of LED packaging, in particular to a white LED device, a manufacturing method thereof, and an LED flash lamp. Background technique [0002] A light emitting diode (Light Emitting Diode, LED) is a solid-state semiconductor device that can directly convert electricity into light. Because LEDs do not contain mercury, are small in size, long in life, fast in response, environmentally friendly, energy-saving, and have high color saturation, they are used more and more widely. The later third-generation lighting sources are widely used in liquid crystal projection devices, mobile phone backlights, and display screens. [0003] Existing conventional photographic flashlights, especially LED flashlights, in which the light-emitting principle of the main light-emitting device is to use blue light chips to emit light to excite yellow phosphors to mix blue light and yellow light to form white ...
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 Applications(China)
IPC IPC(8): H01L33/50
CPCH01L33/504H01L2933/0041
Inventor 蔡连章潘利兵李福海谢志国
Owner FOSHAN NATIONSTAR OPTOELECTRONICS CO LTD