DISPLAY APPARATUS AND LIGHT SOURCE DEVICE THEREOF

    公开(公告)号:US20230258981A1

    公开(公告)日:2023-08-17

    申请号:US18309257

    申请日:2023-04-28

    CPC classification number: G02F1/133621 F21K9/64 G02F1/133602 F21Y2105/16

    Abstract: A display apparatus is provided that includes: a printed circuit board (PCB); a light emitting diode (LED) chip mounted on the PCB and configured to emit light; an optical dome disposed over and enclosing the LED chip; a distributed Bragg reflector (DBR) layer arranged on an upper surface of the LED chip; a liquid crystal panel configured to block or pass light output from the LED chip; and an optical film arranged between the LED chip and the liquid crystal panel. A ratio of a height of the optical dome to a diameter of a bottom surface of the optical dome is 0.25 to 0.31, and the optical film includes a quantum dot sheet formed to enhance color reproducibility by making a change in wavelength of light.

    DISPLAY APPARATUS AND LIGHT SOURCE DEVICE THEREOF

    公开(公告)号:US20220214581A1

    公开(公告)日:2022-07-07

    申请号:US17349550

    申请日:2021-06-16

    Abstract: A light source device comprises a diffuser plate and a light source module disposed behind the diffuser plate. The light source module includes a substrate, a plurality of light emitting diodes mounted on the substrate, and a plurality of reflective layers each provided on a front surface of the plurality of light emitting diodes. When a distance between the centers of each of the plurality of light emitting diodes is referred to as a pitch, and a distance between the diffuser plate and the substrate is referred to as an optical distance, a ratio of the pitch to the optical distance satisfies the following expression: 2.5≤pitch/optical distance≤4.5.

    LED CHIP AND DISPLAY APPARATUS INCLUDING THE SAME

    公开(公告)号:US20220199856A1

    公开(公告)日:2022-06-23

    申请号:US17551901

    申请日:2021-12-15

    Abstract: A display apparatus is provided. The display apparatus includes a display panel; and a light emitting diode (LED) chip configured to emit light to the display panel. The LED chip includes: a light emitting layer configured to emit light; a semiconductor layer provided on the light emitting layer; and a growth substrate provided on the semiconductor layer. The light emitting layer is arranged to be biased toward a first side of the growth substrate such that a center of an upper surface of the growth substrate is provided between a center of the light emitting layer and a center of the semiconductor layer.

    DIFFUSION LENS AND DISPLAY DEVICE HAVING SAME

    公开(公告)号:US20210271005A1

    公开(公告)日:2021-09-02

    申请号:US17250380

    申请日:2019-06-28

    Abstract: A diffusion lens includes a first lens surface having a concave curved shape such that light generated from a light source is incident on the first lens surface, a second lens surface having a convex curved shape such that part of the light incident on the first lens surface is output from the second lens surface, a side surface extending from a periphery of the second lens surface in a vertical direction of the diffusion lens such that part of the rest of the light incident on the first lens surface is output from the side surface, and a bottom surface extending from a periphery of the first lens surface in a horizontal direction of the diffusion lens to meet a periphery of the side surface. Rates of change of the first lens surface and the second lens surface have the same sign, and a pattern in which arbitrary shapes are irregularly disposed or a pattern in which specified shapes are regularly or irregularly disposed is formed on the side surface and the bottom surface to diffuse the light passing through the side surface and diffuse the light reflected by the bottom surface. Besides, it may be permissible to prepare various other embodiments speculated through the specification.

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