KR-20260063596-A - Wide coverage diffusing lens and wide coverage light emitting and driving device package

KR20260063596AKR 20260063596 AKR20260063596 AKR 20260063596AKR-20260063596-A

Abstract

The present invention relates to a wide-spectrum diffusion lens having a wide-spectrum light irradiation area and a wide-spectrum light-emitting driving package, comprising: an incident surface into which light generated from a light-emitting element is incident; and an exit surface that refracts or reflects the light incident from the incident surface and emits it into a wide-spectrum diffusion area; wherein the exit surface may include: a central column portion formed in a cylindrical shape overall; and at least one perimeter dome portion formed around the central column portion, wherein at least a portion thereof is formed in a dome shape or a hemispherical shape.

Inventors

김민선
오승현
박정현

Assignees

주식회사 글로벌테크놀로지

Dates

Publication Date: 20260507
Application Date: 20241030

Claims (15)

An incident surface on which light generated from a light-emitting element is incident; and It includes an output surface that refracts or reflects the light incident from the incident surface and emits it into a widely diffused area; The above-mentioned projection surface is, A central column portion formed in a cylindrical shape overall; and At least one perimeter dome portion formed integrally with the central column portion and formed around the perimeter of the central column portion, wherein at least a portion thereof is formed in a dome shape or a hemispherical shape; A wide-spectrum diffusion lens including
In Article 1, The above central column portion is a wide diffusion lens having an outer diameter surface formed on the side and a central concave groove formed on the upper surface.
In Article 2, The above central concave groove is, A central low point formed concavely on the central axis; and A central convex inclined surface portion formed in an overall funnel shape toward the central low point and having a cross-section formed convex upward; A wide-spectrum diffusion lens including
In Article 1, The above-mentioned rim dome part is, A wide diffusion lens having a spherical surface formed on at least a portion of the side and a rim concave groove formed concavely on the outer diameter surface of the central column or on the upper surface near the outer diameter surface.
In Article 4, The above-mentioned rim groove portion is, A rim low point formed on the upper surface; and A convex inclined edge portion formed in an overall funnel shape toward the lower edge portion and having a cross-section formed convexly upward; A wide-spectrum diffusion lens including
In Article 1, The above incident surface is, A bottom portion formed in an overall flat shape; and An incident groove portion formed concavely in the bottom portion to correspond to the light-emitting element, and formed in an overall dome shape toward the apex portion; A wide-spectrum diffusion lens including
In Article 1, A wide diffusion lens having four border dome portions formed around one central column portion so that light can be dispersed into an overall square-shaped area corresponding to four light-emitting elements.
In Article 1, A wide diffusion lens having two edge dome portions formed around one central column portion so that light can be dispersed into an overall straight area corresponding to two light-emitting elements.
In Article 1, A wide diffusion lens having three border dome portions formed around one central column portion so that light can be dispersed into an overall triangular area corresponding to three light-emitting elements.
Substrate; A terminal layer formed on one surface of the above substrate; A wiring layer formed on the other side of the above substrate and electrically connected to the terminal layer using a through electrode; At least one light-emitting element mounted on a part of the wiring layer and positioned at an outer location of the substrate; A driving element mounted on another part of the wiring layer and positioned at the center of the substrate, and driving the light-emitting element; and A wide diffusion lens for diffusing light generated from the light-emitting element; comprising The above-mentioned wide-spectrum diffusion lens is, An incident surface into which light generated from the light-emitting element is incident; and It includes an output surface that refracts or reflects the light incident from the incident surface and emits it into a widely diffused area; The above-mentioned projection surface is, A central column portion formed in a cylindrical shape overall; and At least one perimeter dome portion formed integrally with the central column portion and formed around the perimeter of the central column portion, wherein at least a portion thereof is formed in a dome shape or a hemispherical shape; A wide-range light-emitting driving package including
In Article 10, The above-described light-emitting element is a wide-range light-emitting driving package in which a plurality of light-emitting elements are symmetrically arranged in a diagonal or cross direction centered on the driving element for wide coverage of the optical path.
In Article 10, A wide-range light-emitting driving package in which the light-emitting element is two or more LEDs arranged respectively in the front left, front right, rear left, and rear right directions centered on the driving element, or arranged respectively in the front, back, left, and right directions.
In Article 10, The light-emitting element comprises at least one of a red LED, a green LED, a blue LED, a white LED, and combinations thereof, in a wide-range light-emitting driving package.
In Article 10, A wide-range light-emitting driving package in which the light-emitting element is a micro LED or a mini LED, and the driving element is a driver IC with one or more channels that drives the micro LED.
In Article 10, A metal substrate pad is formed on at least a portion of the above substrate, and A metal lens pad is formed on at least a portion of the above-mentioned wide diffusion lens, and A wide-range light-emitting driving package in which a solder member is formed between the substrate pad and the lens pad so that the substrate pad and the lens pad can be metal-bonded.

Description

Wide coverage diffusing lens and wide coverage light emitting and driving device package The present invention relates to a wide diffusion lens and a wide light emission driving package, and more specifically, to a wide diffusion lens and a wide light emission driving package having a wide light irradiation area. Generally, conventional light-emitting device packages are formed by mounting a single light-emitting device (LED) on a substrate and molding it with a molding member. When such a single-focus light-emitting device package is used in a backlight unit, the light irradiation area is narrow, so to solve this, a separate optical lens capable of refracting or diffusing light in the optical path was attached. These optical lenses were also often formed with a very simple convex lens shape and failed to reflect the characteristics of the light-emitting element, which resulted in low conversion efficiency and many problems, such as light being transmitted only to a narrow area. In particular, when such optical lenses are multi-focus light-emitting device packages in which multiple light-emitting elements are formed, there were many problems, such as the occurrence of localized dark areas, resulting in uneven light intensity or reduced luminous efficiency. Furthermore, when multiple lenses are applied to multi-focal light-emitting diode packages, the number of components and production processes increase, leading to a significant decrease in product unit cost and productivity. Additionally, light efficiency drops drastically due to light loss caused by diffusion and refraction at the interfaces of the optical lenses. When configuring a backlight, the increased focal length raises the required optical distance (OD), resulting in thicker backlight units or a significant increase in the number of light-emitting diode packages required to construct a backlight unit of the same area, while also making it difficult to achieve display uniformity, among other problems. Furthermore, backlight units using such conventional light-emitting element packages have many problems, such as the mounting of separate driving elements, like driver ICs that drive these light-emitting element packages, on the printed circuit board in addition to the light-emitting element packages. Since the wiring layers of the printed circuit board become very complex, the complexity of the circuitry increases, requiring the wiring layers to be configured in multiple layers, which not only increases the manufacturing cost of the printed circuit board but also significantly raises the unit price of the product and manufacturing process costs, such as bonding, due to the increase in the number of components, including driving elements. Additionally, there were issues such as distortion of the beam angle caused by positional deviations during the assembly of the aforementioned optical lenses. Meanwhile, backlight units using conventional light-emitting element packages have problems such as increased raw material costs due to the package or circuit configuration becoming larger or larger in area because the light-emitting element and the driving element are mounted on a single printed circuit board on the same plane. FIG. 1 is a perspective view showing a wide diffusion lens according to some embodiments of the present invention. Figure 2 is a plan view of the wide diffusion lens of Figure 1. Figure 3 is a bottom view of the wide diffusion lens of Figure 1. Figure 4 is a cross-sectional view showing the IV-IV cross-section of the wide diffusion lens of Figure 1. FIG. 5 is a perspective view showing a wide diffusion lens according to some other embodiments of the present invention. Figure 6 is a plan view of the wide diffusion lens of Figure 5. FIG. 7 is a perspective view showing a wide diffusion lens according to some other embodiments of the present invention. Figure 8 is a plan view of the wide diffusion lens of Figure 7. FIG. 9 is an exploded perspective view showing a wide-spectrum light-emitting driving package according to some embodiments of the present invention having a wide-spectrum diffusion lens of FIG. 1. Figure 10 is a bottom view showing the wide-range light-emitting driving package of Figure 9. FIG. 11 is a plan view showing the wide-range light-emitting driving package of FIG. 9. FIG. 12 is a cross-sectional view showing the wide-range light-emitting driving package of FIG. 9. FIG. 13 is a plan view showing the light irradiation area of the wide-range light-emitting driving package of FIG. 9. FIG. 14 is a plan view showing a backlight unit according to some embodiments of the present invention. FIG. 15 is a plan view showing a display device according to some embodiments of the present invention. FIG. 16 is an exploded perspective view showing a wide-range light-emitting driving package according to some other embodiments of the present invention. FIG. 17 is a plan view showing the wide-range light-emitting driving package of FIG.