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公开(公告)号：US20240021756A1
公开(公告)日：2024-01-18
申请号：US18222223
申请日：2023-07-14
发明人： Youngjin Choi , Donggun Lee , Punjae Choi
CPC分类号： H01L33/325 , H01L33/12 , H01L33/06
摘要： A nitride semiconductor light emitting device includes an active layer provided between P-type and N-type nitride semiconductor layers, a first strain reducing layer including first InGaN films and first GaN films alternately stacked between the N-type nitride semiconductor layer and the active layer, and a second strain reducing layer including a second InGaN film and a second GaN film alternately stacked between the first strain reducing layer and the active layer. The active layer includes an InGaN well layer, a barrier layer, an AlGaN layer between the InGaN well layer and the barrier layer, and an intermediate lattice layer between the InGaN well layer and the AlGaN layer The intermediate lattice layer including a nitride single crystal having a lattice larger than a first lattice of the InGaN well layer and smaller than a second lattice of the AlGaN layer.
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公开(公告)号：US20240021145A1
公开(公告)日：2024-01-18
申请号：US18222155
申请日：2023-07-14
发明人： Donggun Lee , Punjae Choi , Youngjin Choi
IPC分类号： G09G3/32
CPC分类号： G09G3/32 , G09G2300/0842 , G09G2320/0633 , G09G2320/0247
摘要： A display apparatus includes a display panel including a plurality of pixels each having red, green, and blue LEDs; a display panel driver applying a current to each of the LEDs; a memory storing current intensity information according to target luminance of each of the LEDs; and a processor controlling the display panel driver to apply a current to each of the LEDs based on the current intensity information, wherein the processor is configured to control the display panel driver to apply an additional current to the green LED when a target luminance of the red LED is smaller than a predetermined luminance.
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公开(公告)号：US12027107B2
公开(公告)日：2024-07-02
申请号：US18222155
申请日：2023-07-14
发明人： Donggun Lee , Punjae Choi , Youngjin Choi
IPC分类号： G09G3/32
CPC分类号： G09G3/32 , G09G2300/0842 , G09G2320/0247 , G09G2320/0633
摘要： A display apparatus includes a display panel including a plurality of pixels each having red, green, and blue LEDs; a display panel driver applying a current to each of the LEDs; a memory storing current intensity information according to target luminance of each of the LEDs; and a processor controlling the display panel driver to apply a current to each of the LEDs based on the current intensity information, wherein the processor is configured to control the display panel driver to apply an additional current to the green LED when a target luminance of the red LED is smaller than a predetermined luminance.
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公开(公告)号：US11854443B2
公开(公告)日：2023-12-26
申请号：US17500098
申请日：2021-10-13
发明人： Young Kim , Geunwoo Ko , Minsu Kim , Geeyoung Sung , Dongyeoul Lee , Sangbum Lee , Jonghyun Lee , Hongseok Lee , Punjae Choi , Jong-Young Hong
CPC分类号： G09G3/001 , G02B30/34 , G03H1/2205 , G03H1/2294 , G09G3/32 , G03H2222/34 , G09G2320/064 , G09G2330/08
摘要： A three-dimensional holographic display device includes a light emitting diode (LED) array including a plurality of light sources controlled to sequentially output light according to a preset pattern, a lens configured to refract light incident from the LED array, a spatial light modulator (SLM) configured to modulate light incident from the lens, and a processor configured to generate a plurality of holographic signals each comprising depth information adjusted according to an arrangement location of each of the plurality of light sources, and for each of the plurality of light sources, control the SLM to modulate the light based on a holographic signal corresponding to the light source.
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