Circuit board and display device

Abstract

The invention discloses a circuit board and a display device, the circuit board comprises a circuit board substrate and a ceramic capacitor, the ceramic capacitor is arranged on the circuit board substrate, and the circuit board is characterized in that the circuit board substrate is provided with a first slot and at least one second slot, the first slotted hole and the second slotted hole penetrate through the circuit board substrate; wherein the ceramic capacitor is bridged on the first slotted hole, the ceramic capacitor is provided with a first pin and a second pin, the circuit board substrate is provided with a first bonding pad corresponding to the first pin and a second bonding pad corresponding to the second pin, the first bonding pad and the second bonding pad are located on the two sides of the first slotted hole, and the first bonding pad and the second bonding pad are connected with the first slotted hole. The second slotted hole is located on at least one side of the ceramic capacitor, and the second slotted hole and the ceramic capacitor are arranged at an interval. In this way, howling of the ceramic capacitor caused by vibration of the circuit board due to the electrostriction effect can be reduced.

Description

technical field [0001] The present application relates to the technical field of circuit boards, in particular to a circuit board and a display device. Background technique [0002] At present, the most widely used capacitors for panel drive circuit boards are MLCC (Multi-layer Ceramic Capacitors, chip multilayer ceramic capacitors), which have the advantages of small size and low parasitic inductance. Generally, the capacitors are fixed on the printed circuit board by surface mounting circuit board. However, due to the inverse piezoelectric effect characteristic of strong electrolyte ceramics, when an AC voltage is applied to both ends of the MLCC capacitor, the MLCC capacitor will expand and contract in the direction of stacking the layered structure. Specifically, when alternating current is applied to both ends of the ceramic capacitor, it will expand and contract in the direction perpendicular to the layered structure and in the direction parallel to the circuit board....

AI Technical Summary

Problems solved by technology

If the howling problem cannot be improved, it will flow to the client or the market, which will greatly affect the user experience

At present, ceramic capacitor suppliers will add sponge or hollow brackets under the capacitors to form gasket capacitors or bracket capacitors to reduce capacitor noise, but such capacitors are expensive and not conducive to mass production.

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