Process for uniformly printing fluorescent solution on PCB
A PCB board and solution technology, applied in printed circuits, printed circuit manufacturing, printed circuit liquid processing, etc., can solve the problem of inability to achieve uniform printing of fluorescent solutions, and achieve the effect of avoiding excessive dripping and reducing production costs.
Inactive Publication Date: 2019-09-03
ANHUI COREACH TECH
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Problems solved by technology
[0003] The patent application number is (CN104916762) for a white LED surface light source and its preparation method, which cannot realize the uniform printing of fluorescent solution on the PCB board
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[0025] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0026] see figure 1 As shown, a process for uniformly printing fluorescent solution on a PCB, including PCB 1, LED pad position 2 and fluorescent solution groove 6, LED pad position 2 is arranged on the top side of PCB board 1, PCB board 1 Fluorescent solution grooves 6 are provided on the top side and around the LED pad position 2;
[0027] The specific operation steps of this process are as follows:
[0028] Step 1: On the PCB board 1 and around the LED pad position 2, design the part that needs to be coated with fluore...
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The invention discloses a process for uniformly printing a fluorescent solution on a PCB (printed Circuit Board). The process comprises the steps of: forming a pre-fluorescent solution groove on the PCB, printing the fluorescent solution on the PCB by adopting a printer for printing solder paste in the lamp strip industry, manufacturing a special fluorescent solution steel mesh for printing the fluorescent solution, forming fluorescent solution steel mesh holes on the fluorescent solution steel mesh, placing the fluorescent solution on the fluorescent solution steel mesh, uniformly brushing the fluorescent solution steel mesh into the fluorescent solution groove on the PCB by using a steel mesh scraper, feeding the PCB printed with the fluorescent solution into a reflow furnace for baking,taking out the PCB, and finishing the solidification of the fluorescent solution to achieve the uniform printing of the fluorescent solution on the PCB. According to the invention, the fluorescent solution is uniformly printed on the PCB, and the blue light is used for exciting the fluorescent powder components in the fluorescent solution, so that the white light can be excited while the light intensity of the blue light is reduced, the brightness of the module is not reduced, and the process blank of uniformly printing the fluorescent solution on the PCB in the market is filled.
Description
technical field [0001] The invention relates to the field of PCB board production, in particular to a process for uniformly printing a fluorescent solution on a PCB board. Background technique [0002] In the TV industry, the backlight module of QLED TV uses blue LEDs to emit blue light, and obtains high-purity white light through optical materials (QDEF diaphragms) with red and green quantum dots, thereby restoring images with a higher color gamut. [0003] The patent application number is (CN104916762) for a white LED surface light source and its preparation method, which cannot realize the uniform printing of the fluorescent solution on the PCB. [0004] The lenses currently on the market, whether they are refraction or reflection, will concentrate more blue light directly above the lens, resulting in a bluish picture directly above the lens. In order to make the blue light projected on the QDEF diaphragm as uniform as possible, It is necessary to reduce the intensity of...
Claims
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IPC IPC(8): H05K3/00H05B3/10
CPCH05B3/10H05K3/0085
Inventor 翟标谭璟王科吴疆彭友
Owner ANHUI COREACH TECH