一种防水LGA封装围坝

By employing a dual fixing method of mechanical snap-fit ​​and chemical bonding, combined with waterproof adhesive filling, the problem of insufficient waterproof performance in traditional LGA packaging is solved, achieving a packaging structure with high stability and reliability.

CN224521661UActive Publication Date: 2026-07-17HOPE MICROELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HOPE MICROELECTRONICS CO LTD
Filing Date
2025-06-24
Publication Date
2026-07-17

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Abstract

本实用新型涉及电子封装技术领域，尤其涉及一种防水LGA封装围坝。其技术方案包括：所述底板上安装有围坝本体；所述底板内开设有限位窗口，所述限位窗口处开设有限位槽，所述围坝本体设有插接块，所述围坝本体通过插接块与限位槽相互配合限位卡接在底板上，所述围坝本体内设有内腔，所述围坝本体的边缘处设有围边，所述围边内开设有通孔和容纳腔，且通孔和容纳腔相连通。本实用新型通过底板限位窗口与围坝插接块的机械卡合定位，配合内腔防水胶立体防护及围边容纳腔粘合剂密封，形成复合防水结构，解决传统平面密封多角度防水不足问题，通孔注胶设计优化工艺，提升封装可靠性与生产效率。
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Claims

1. A waterproof LGA-encapsulated dam, comprising a base plate (2), wherein a dam body (1) is mounted on the base plate (2), characterized in that: A limiting window (203) is provided in the base plate (2), and a limiting groove (202) is provided at the limiting window (203). The dam body (1) is provided with a plug-in block (101). The dam body (1) is limited and locked onto the base plate (2) by the plug-in block (101) and the limiting groove (202). The dam body (1) is provided with an inner cavity (102). The edge of the dam body (1) is provided with a rim (103). The rim (103) is provided with a through hole (104) and a receiving cavity (105), and the through hole (104) and the receiving cavity (105) are connected.

2. The waterproof LGA package dam of claim 1, wherein: Fixing holes (201) are provided at the four corners of the base plate (2), and the base plate (2) is mounted on the PCB through the fixing holes (201).

3. The waterproof LGA package dam of claim 1, wherein: The base plate (2) is snapped onto the chip of the PCB through the limiting window (203).

4. The waterproof LGA-encapsulated dam according to claim 1, characterized in that: The through hole (104) is used to inject adhesive into the receiving cavity (105), the receiving cavity (105) is used to store adhesive, and the dam body (1) is bonded and fixed to the base plate (2) by adhesive.

5. The waterproof LGA package dam of claim 1, wherein: The inner cavity (102) is used to store waterproof adhesive.