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公开(公告)号：US10921751B2
公开(公告)日：2021-02-16
申请号：US16058834
申请日：2018-08-08
发明人： Hyungseok Bang , Heejin Im , Guensik Lee , Friedrich-Karl Bruder , Thomas Peter Facke , Marc-Stephan Weiser , Rainer Hagen , Thomas Rolle , Horst Berneth , Dennis Honel , Günther Walze
摘要： The invention relates to a method for producing a holographic optical element by providing a recording stack comprising at least one recording element laminated on at least one supporting element, irradiating at least a part of the recording stack with at least one recording beam in an irradiating step, wherein during the irradiating step, the recording stack bends, providing a bending deviation threshold for the recording stack, and adjusting at least one first process parameter such that an expected maximum bending deviation of the recording stack does not exceed the bending deviation threshold, wherein the at least one first process parameter influences the bending behaviour of the recording stack during the irradiating step.
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公开(公告)号：US10114167B2
公开(公告)日：2018-10-30
申请号：US14932456
申请日：2015-11-04
发明人： Hyungseok Bang , Seungman Ryu
摘要： Provided is a thin light unit for a display device that includes, for example, a high refraction film including an inclined portion at a first side of the high refraction film and a flat portion extended from the inclined portion to a second side of the high refraction film; a second member on the inclined portion at the first side of the high refraction film and having a first width; a first member on the flat portion in a middle of the second side of the high refraction film and separated from the second member; a third member on the flat portion and having the first width; and a light source adjacent to the first member at a side of the flat portion.
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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：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：US10403695B2
公开(公告)日：2019-09-03
申请号：US15790490
申请日：2017-10-23
申请人： LG Display Co., Ltd.
发明人： Hyungseok Bang , JongGeun Yoon , KyungHoon Lee , DongHee Yoo
摘要： An organic light-emitting display device and a method of manufacturing the same are provided. An organic light-emitting display device includes: first electrodes, a first pixel-defining layer configured to divide the first electrodes, a second pixel-defining layer on the first pixel-defining layer, an organic light-emitting layer on a first electrode among the first electrodes, and a second electrode on the organic light-emitting layer, wherein a width of the second pixel-defining layer is wider than a width of the first pixel-defining layer.
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公开(公告)号：US20190198816A1
公开(公告)日：2019-06-27
申请号：US16223668
申请日：2018-12-18
申请人： LG Display Co., Ltd.
发明人： Jiyeon PARK , Hansun Park , Hyungseok Bang , Hyeongjun Lim
摘要： The disclosure relates to a high-aperture-ratio microdisplay with a microcavity structure. The microdisplay comprises a substrate, unit pixels, driving elements, and organic light-emitting diodes. The organic light-emitting diodes each comprise: an anode, an organic emission layer, and a cathode. The anode is formed by sequentially stacking a reflecting electrode, a first dielectric layer, a second dielectric layer, and a transparent electrode. The organic emission layer is stacked over the anode. The cathode is stacked over the organic emission layer. The first dielectric layer and the second dielectric layer have contact portion that open at least one corner of the reflecting electrode. The anode is connected to the reflecting electrode through the contact portions.
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公开(公告)号：US10790473B2
公开(公告)日：2020-09-29
申请号：US16223668
申请日：2018-12-18
申请人： LG DISPLAY CO., LTD.
发明人： Jiyeon Park , Hansun Park , Hyungseok Bang , Hyeongjun Lim
摘要： The disclosure relates to a high-aperture-ratio microdisplay with a microcavity structure. The microdisplay comprises a substrate, unit pixels, driving elements, and organic light-emitting diodes. The organic light-emitting diodes each comprise: an anode, an organic emission layer, and a cathode. The anode is formed by sequentially stacking a reflecting electrode, a first dielectric layer, a second dielectric layer, and a transparent electrode. The organic emission layer is stacked over the anode. The cathode is stacked over the organic emission layer. The first dielectric layer and the second dielectric layer have contact portion that open at least one corner of the reflecting electrode. The anode is connected to the reflecting electrode through the contact portions.
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公开(公告)号：US10474863B2
公开(公告)日：2019-11-12
申请号：US15637824
申请日：2017-06-29
申请人： LG DISPLAY CO., LTD.
发明人： Seungman Ryu , Hyungseok Bang , Ara Yoon
摘要： Discussed is a flat panel display device embedding an optical imaging sensor such as a fingerprint image sensor. The device includes: a display panel including a display area and a non-display area, and having a top surface; and 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, wherein the directional optical unit provides a sensing light to the display area, and wherein the sensing light is collimated and directionized along a predetermined direction of the directional optical unit.
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公开(公告)号：US10073416B2
公开(公告)日：2018-09-11
申请号：US14695610
申请日：2015-04-24
发明人： Hyungseok Bang , Heejin Im , Guensik Lee , Friedrich-Karl Bruder , Thomas Peter Facke , Marc-Stephan Weiser , Rainer Hagen , Thomas Rolle , Horst Berneth , Dennis Honel , Günther Walze
CPC分类号： G03H1/0402 , G02B5/32 , G03H1/0252 , G03H1/0272 , G03H1/04 , G03H1/0486 , G03H2001/026 , G03H2001/0264 , G03H2001/043 , G03H2001/0439 , G03H2240/43 , G03H2240/52 , G03H2240/55 , G03H2270/11
摘要： The invention relates to a method for producing a holographic optical element by providing a recording stack comprising at least one recording element laminated on at least one supporting element, irradiating at least a part of the recording stack with at least one recording beam in an irradiating step, wherein during the irradiating step, the recording stack bends, providing a bending deviation threshold for the recording stack, and adjusting at least one first process parameter such that an expected maximum bending deviation of the recording stack does not exceed the bending deviation threshold, wherein the at least one first process parameter influences the bending behavior of the recording stack during the irradiating step.
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公开(公告)号：US10916701B2
公开(公告)日：2021-02-09
申请号：US16171105
申请日：2018-10-25
申请人： LG DISPLAY CO., LTD.
发明人： Hyungseok Bang , Hansun Park , Hyeongjun Lim
摘要： An ultra-fine pattern deposition apparatus can include a base substrate; a photothermal converter disposed on or in the base substrate and configured to convert optical energy into thermal energy; a source part disposed on the photothermal converter; and a light reflector configured to reflect light based on a refractive index difference between the light reflector and the base substrate, and guide a source material emitted from the source part to a target region based on an opening in the light reflector and the photothermal converter being heated with the thermal energy from the photothermal converter, in which the opening in the light reflector includes a laterally recessed lower part and an upper part protruded from the laterally recessed lower part, and the laterally recessed lower part is between the upper part and the base substrate, and the photothermal converter is disposed between base substrate and the source part.
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