MULTILAYER CERAMIC CAPACITOR

• Main Authors: KASAHARA MASAHIRO, KOTANI JUN, KARAYA RYOTA
• Format: Patent
• Language: English; Korean
• Published: 31.03.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY

Provided is a multilayer ceramic condenser with excellent moisture resistance. The multilayer ceramic condenser comprises: a body (10) having dielectric ceramic layers (35a, 35b), inner electrode layers (36a, 36b); and outer electrodes (20a, 20b). The body (10) includes: a capacity forming unit (30) in which the dielectric ceramic layers (35a, 35b) and the inner electrode layers (36a, 36b) are stacked in turn in a thickness-wise (T) direction; circumferential surface sheath units (40a, 40b) arranged on circumferential surfaces (31a, 31b) of the capacity forming unit (30) in the thicknesswise (T) direction; side surface sheath units (50a, 50b) arranged on side surfaces (32a, 32b) of the capacity forming unit (30) in a widthwise (W) direction at right angles to the thicknesswise (T) direction; and cross-section sheath units (60a, 60b) arranged on cross-sections (33a, 33b) of the capacity forming unit (30) in a longitudinal (L) direction at right angles to the thicknesswise (T) direction and the widthwise (W) direction. The inner electrode layers (36a, 36b) have exposed parts (37a, 37b) exposed to the cross-sections (33a, 33b) of the capacity forming unit (30). The cross-section sheath units (60a, 60b) are arranged on the cross-sections (33a, 33b) of the capacity forming unit (30) to cover a part of the exposed parts (37a, 37b) of the inner electrode layers (36a, 36b). The outer electrodes (20a, 20b) access the inner electrode layers (36a, 36b) while covering the exposed parts (37a, 37b) of the inner electrode layers (36a, 36b) not covered by the cross-section sheath units (60a, 60b) and covering the cross-section sheath units (60a, 60b). 내습성이 뛰어난 적층 세라믹 콘덴서를 제공한다. 유전체 세라믹층(35a, 35b) 및 내부전극층(36a, 36b)을 가지는 소체(10)와, 외부전극(20a, 20b)을 포함하고, 소체(10)는 유전체 세라믹층(35a, 35b) 및 내부전극층(36a, 36b)이 두께방향(T)으로 교대로 적층되어 이루어지는 용량 형성부(30)와, 두께방향(T)을 향한 용량 형성부(30)의 주면(31a, 31b) 상에 마련된 주면 피복부(40a, 40b)와, 두께방향(T)에 직교하는 폭방향(W)을 향한 용량 형성부(30)의 측면(32a, 32b) 상에 마련된 측면 피복부(50a, 50b)와, 두께방향(T) 및 폭방향(W)에 직교하는 길이방향(L)을 향한 용량 형성부(30)의 단면(33a, 33b) 상에 마련된 단면 피복부(60a, 60b)를 가지며, 내부전극층(36a, 36b)은 용량 형성부(30)의 단면(33a, 33b)에 노출된 노출 부분(37a, 37b)을 가지며, 단면 피복부(60a, 60b)는 내부전극층(36a, 36b)의 노출 부분(37a, 37b)의 일부를 덮도록 용량 형성부(30)의 단면(33a, 33b) 상에 마련되고, 외부전극(20a, 20b)은 단면 피복부(60a, 60b)로 덮이지 않은 내부전극층(36a, 36b)의 노출 부분(37a, 37b)과 단면 피복부(60a, 60b)를 덮으면서 내부전극층(36a, 36b)에 접속되는, 적층 세라믹 콘덴서(1).