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公开(公告)号：US10082614B2
公开(公告)日：2018-09-25
申请号：US15379976
申请日：2016-12-15
发明人： Hyungseok Bang , Seungman Ryu , Joobong Hyun , Yongku Lee , Dongyeon Kim , Friedrich-Karl Bruder , Günther Walze
IPC分类号： F21V8/00 , G02F1/13 , G02F1/1335
摘要： The disclosure relates to a viewing angle switchable back light unit wherein a general mode and a privacy mode in a liquid crystal display can be selected. A thin film type back light unit includes a light guide film, a light radiator, a first light source, and a light collimator. The light guide film includes a light entering part at one side, a light guiding part extending from the one side to an opposite side of the one side, and a light radiating part on one plane surface. The light radiator is on the light radiating part. The first light source faces the light entering part. The light collimator is on the light entering part facing the first light source. The light collimator receives an expanding light from the first light source, converts the expanding light into collimated light, and provides the collimated light to the light entering part.
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公开(公告)号：US09851489B2
公开(公告)日：2017-12-26
申请号：US15184349
申请日：2016-06-16
IPC分类号： F21V7/04 , F21V8/00 , G02F1/1335
CPC分类号： G02B6/002 , G02B6/0028 , G02B6/005 , G02B6/0055 , G02B6/0068 , G02B6/0073 , G02F1/133615
摘要： The present disclosure relates to a viewing angle switchable back light unit in which the general mode and the privacy mode in a liquid crystal display can be selected. The present disclosure suggests a thin film type back light unit comprising: a light guide film including a light entering part disposed at one side, a light changing part disposed at other side and a light guiding part connecting the light entering part and the light changing part; a light radiating part disposed on an upper surface of the light guide film; and a light source disposed at the light entering part of the light guide film. The light entering part includes a wedge light coupler and a light deflection element. The light changing part includes a light reflecting pattern. The light radiating part includes a light radiating film providing some of the collimated lights as back lights.
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公开(公告)号：US10747980B2
公开(公告)日：2020-08-18
申请号：US16103553
申请日：2018-08-14
申请人： LG Display Co., Ltd.
发明人： Joobong Hyun , Kyoseop Choo , Seungman Ryu , Ara Yoon
IPC分类号： G06K9/00 , G02B6/42 , H01L27/146
摘要： Disclosed herein is a display device capable of recognizing a fine fingerprint without a complicated construction such as a bulky optical device. The display device comprises a display panel having a display area and a non-display area outside the display area; a light source disposed below the non-display area of the display panel to irradiate the display panel with light; a directional light unit disposed on an upper portion of the display panel, refracting the light supplied from the light source at a first angle to travel from the non-display area to the display area in total internal reflection, reflecting some of the totally internally reflected light at a second angle, and then supplying a light reflected by an object having biometric information to the display panel; and an optical sensor disposed below the display panel and receiving the light exited from the directional light unit.
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4.发明授权公开(公告)号：US10943944B2
公开(公告)日：2021-03-09
申请号：US15826075
申请日：2017-11-29
申请人： LG Display Co., Ltd.
发明人： Seungman Ryu , Hoon Kang , Joobong Hyun , Jinhyuk Jang , Ara Yoon
IPC分类号： H01L27/14 , H01L27/146 , H01L25/16 , H01L27/15 , H01L27/32 , H01L23/498
摘要： The present disclosure relates to a flat panel display embedding an optical imaging sensor such as a fingerprint image sensor. The present disclosure provides a flat panel display embedding an optical image sensor comprising: a display panel including a display area and a sensing area defined in the display area; a barrier plate having a light transparent area corresponding to the sensing area and disposed at a rear surface of the display panel; and a light sensor disposed under the barrier plate corresponding to the light transparent area.
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公开(公告)号：US10929640B2
公开(公告)日：2021-02-23
申请号：US16124494
申请日：2018-09-07
申请人： LG Display Co., Ltd.
发明人： Seungman Ryu , Joobong Hyun , Ara Yoon
IPC分类号： G06F3/042 , G06K9/00 , F21V8/00 , G02F1/1333 , G06F3/041 , G02F1/1335
摘要： The present disclosure relates to a flat panel display with an optical image sensor embedded therein. The flat panel display includes a directional light unit. The directional light unit comprises a cover substrate with a surface area corresponding to the length and width; a first low refractive index layer attached to the lower surface of the cover substrate; a light-exiting element disposed to correspond to the display area, on the lower surface of the first low refractive index layer; a light-entering element disposed outside the display area at one side of the light-exiting element, on the lower surface of the first low refractive index layer; a second low refractive index layer disposed on the lower surfaces of the light-exiting element and light-entering element and attached to the upper surface of the display panel; and a light source disposed to face the light-entering element.
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公开(公告)号：US12014667B2
公开(公告)日：2024-06-18
申请号：US17511255
申请日：2021-10-26
申请人： LG Display Co., Ltd.
发明人： Hoon Kang , Juhoon Jang , Joobong Hyun
IPC分类号： G09G3/20
CPC分类号： G09G3/2092 , G09G2300/023 , G09G2300/026 , G09G2300/0439 , G09G2300/0842 , G09G2310/08 , G09G2360/04
摘要： A display device includes a plurality of segmented display units arranged in a matrix, and a front display unit disposed on the plurality of segmented display units. The front display unit includes a plurality of transmission areas corresponding to main display areas of the plurality of segmented display units, and a supplementation display area corresponding to a separation area between the main display areas of adjacent segmented display units among the plurality of segmented display units. Due to the supplementation display area of the front display unit, the separation area between the main display areas of adjacent segmented display units may be prevented from being visible to a user. Therefore, the display device may realize both a large size screen and a high resolution.
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公开(公告)号：US10726232B2
公开(公告)日：2020-07-28
申请号：US15969360
申请日：2018-05-02
申请人： LG Display Co., Ltd.
发明人： Seungman Ryu , Guensik Lee , Joobong Hyun , Ara Yoon
摘要： The present disclosure relates to a flat panel display having an optical imaging sensor such as a fingerprint image sensor. The present disclosure provides a flat panel display having an image sensor comprising: a display panel including a display area and a non-display area, the display panel having a top surface; a directional optical unit attached to the top surface of the display panel, the directional optical unit having a length along a length axis of the display panel, a width along a width axis of the display panel and a thickness along a thickness axis of the display panel; a sensing light control film disposed under the display panel; and an image sensor disposed under the sensing light control film.
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