Abstract: A chip package structure is provided. The chip package structure includes a chip. The chip package structure includes a conductive ring-like structure over and electrically insulated from the chip. The conductive ring-like structure surrounds a central region of the chip. The chip package structure includes a first solder structure over the conductive ring-like structure. The first solder structure and the conductive ring-like structure are made of different materials.

Abstract: An electronic device includes a casing, a circuit board and at least one antenna module. The casing has an accommodating space and an inner side wall surrounding the accommodating space. The circuit board is disposed in the accommodating space. Each of the antenna modules includes a first radiator and a second radiator. The first radiator is disposed on the circuit board and adjacent to the inner side wall, and includes a first section, a second section and a third section extending from the first section in opposite directions respectively. The first section includes a feeding end, and the third section includes a grounding end. The second radiator is disposed on the inner side wall. A coupling gap is formed between the first radiator and the second radiator.

Abstract: An electronic device includes a casing, a circuit board and at least one antenna module. The casing has an accommodating space and an inner side wall surrounding the accommodating space. The circuit board is disposed in the accommodating space. Each of the antenna modules includes a first radiator and a second radiator. The first radiator is disposed on the circuit board and adjacent to the inner side wall, and includes a first section, a second section and a third section extending from the first section in opposite directions respectively. The first section includes a feeding end, and the third section includes a grounding end. The second radiator is disposed on the inner side wall. A coupling gap is formed between the first radiator and the second radiator.

Abstract: A driven electrode structure of an in-plane switching liquid crystal display is divided into a plurality of sub-regions, each of the sub-regions includes a plurality of sub-driven electrodes, a plurality of intervals is formed between adjacent sub-driven electrodes, so as each of the sub-regions has the intervals, and at least two of the intervals in the sub-regions are different from one another. By changing the width or shape of each sub-driven electrode, at least two of the intervals in the sub-regions are different from one another, so as the Mura condition of the in-plane switching liquid crystal display can be obscure, so as the Mura defect can be minimized uniformly without being visually recognized by human eyes and further improve the visual defect of the Mura.