Ceramic slurry for LED (light-emitting diode) metal substrate and preparation method of LED (light-emitting diode) metal substrate
A technology of metal substrate and ceramic slurry, which is applied in the direction of electrical components, circuits, semiconductor devices, etc., can solve the problems of few adopters of manufacturing technology, poor thermal conductivity and insulation performance, poor adhesion and heat resistance, etc. , to achieve the effect of improving thermal conductivity and insulation performance, high thermal conductivity, and short sintering time
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[0032] In the preparation method of the insulating ceramic slurry, various raw materials are uniformly mixed, and the slurry is obtained after grinding, dispersing, stirring and filtering.
[0033] The preparation method of the LED metal substrate, the steps are: 1) select a metal plate, polish and polish the printing surface of the metal plate layer, wash and dry; 2) apply the above-mentioned insulating ceramic slurry to the printing surface of the metal plate, sinter, cool to room temperature, Form an insulating layer; 3) Apply solderable silver paste to the surface of the insulating layer, sinter, and cool to room temperature to form a circuit layer; 4) The non-electrode part of the circuit layer is coated with solder resist ink, marking the positive and negative positions, and the ink is cured That's it.
[0034] In step 1), the material of the metal substrate is selected from one of aluminum, aluminum alloy, copper and copper alloy.
[0035] In step 2), the coating thick...
Embodiment 1
[0040] The preparation method of LED metal substrate, the steps are:
[0041] Step 1: Choose a metal aluminum plate with a length of 50mm, a width of 30mm, and a thickness of 1mm. Then use a machine to polish and polish the printed surface of the aluminum plate layer to make the surface flatness less than ±0.01mm, then clean and dry;
[0042] Step 2: The first step is to prepare ceramic powder: the ceramic powder is made of insulating ceramic slurry, the main component of which is ceramic powder. The preparation process is as follows: the SiO 2 , B 2 o 3 、 Bi 2 O3, ZnO, P 2 o 5, CaO, Al 2 o 3 The powders of these seven oxides are uniformly mixed in a mass ratio of 10:20:40:10:8:7:5. Then pour the mixed powder into the corundum tong pot. And put the tongs into the high-temperature muffle furnace to be fired. Start at 300°C, sinter at 300-400°C for 15 minutes, hold at 400°C for 30 minutes, sinter at 400-800°C for 40 minutes, sinter at 800-1180°C for 40 minutes, and ho...
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