ROHM has been granted a patent for a semiconductor light emitting device. The device includes a resin package surrounding a semiconductor light source and a lead fixed to the resin package. The lead has a die bonding pad for bonding the light source and an exposed surface surrounded by the resin package. The patent also includes a claim for a light-emitting device with multiple conductors, protection elements, and a resin member supporting them. GlobalData’s report on ROHM gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on ROHM, under-screen biometric identification was a key innovation area identified from patents. ROHM's grant share as of September 2023 was 40%. Grant share is based on the ratio of number of grants to total number of patents.
Semiconductor light emitting device with protected light-emitting element
A recently granted patent (Publication Number: US11777068B2) describes a light-emitting device with specific design features. The device includes first, second, and third conductors arranged on a common plane and spaced apart from each other. A first protection element is mounted on the first conductor, and a second protection element is mounted on the second conductor. A first light-emitting element is mounted on the third conductor. The device also includes a resin member that supports the conductors, light-emitting element, and protection elements.
In terms of the device's arrangement, when viewed in a first direction parallel to the common plane, the first light-emitting element is positioned between the first and second protection elements. Additionally, when viewed in a second direction parallel to the common plane and perpendicular to the first direction, the first light-emitting element is offset in the first direction with respect to the protection elements.
The patent also mentions additional features of the light-emitting device. For instance, it can include a fourth conductor and a second light-emitting element mounted on the fourth conductor. Furthermore, a fifth conductor and a third light-emitting element can be mounted on the fifth conductor. The fifth conductor may have a first portion extending in the first direction and a second portion extending in the second direction, with the third light-emitting element mounted on the second portion.
The conductors in the device can have portions exposed from the bottom surface of the resin member. The resin member itself can have a first edge and a second edge spaced apart from each other in the first direction. The first through third conductors protrude outwards from the first edge, while the fourth and fifth conductors protrude outwards from the second edge.
Other features mentioned in the patent include the overlap of the second and third light-emitting elements, the presence of a reflector surrounding the light-emitting elements and protection elements, and the inclusion of additional conductors and wires for connection purposes.
Overall, this patent describes a specific design for a light-emitting device that incorporates various conductors, light-emitting elements, and protection elements, all supported by a resin member. The arrangement and positioning of these components are detailed in the patent, providing a unique configuration for the device.
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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
