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公开(公告)号：US10916190B2
公开(公告)日：2021-02-09
申请号：US16712917
申请日：2019-12-12
Applicant: LG DISPLAY CO., LTD.
Inventor： HyunGon Kim , DukKeun Yoo
IPC: G09G3/3225 , G06F3/041 , G09G3/3275 , G09G3/36
Abstract: A driving circuit, a display panel, and a display device are provided. The display panel comprises a plurality of common electrodes; a plurality of phototransistors, two or more phototransistors among the plurality of phototransistors being disposed in an area corresponding to each of the plurality of common electrodes; a plurality of photo-control lines electrically connected to a gate electrode of at least one phototransistor among the plurality of phototransistors; a plurality of photo-driving lines electrically connected to a first electrode of at least one phototransistor among the plurality of phototransistors, and a plurality of read-out lines, each of the plurality of read-out lines being electrically connected to a single common electrode among the plurality of common electrodes, and electrically connected to second electrodes of all of the phototransistors disposed in the area corresponding to the single common electrode to which each of the plurality of read-out lines are electrically connected. According to the present disclosure, an increase in non-open areas is minimized and the magnitude of the output signal of the phototransistor detected through the read-out line is increased, thereby improving photosensing performance.
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公开(公告)号：US11592931B2
公开(公告)日：2023-02-28
申请号：US16711235
申请日：2019-12-11
Applicant: LG Display Co., Ltd.
Inventor： HyunGon Kim , DukKeun Yoo
Abstract: A display panel includes common electrodes in an active area and a first driving circuit on one side of the active area and a second driving circuit on the other side of the active area. First read-out lines are electrically connected to the common electrodes, respectively, and to the first driving circuit. Second read-out lines are electrically connected to the second driving circuit, and to the first read-out lines, respectively. An output signal of phototransistors may be detected using read-out lines connected to a common electrode serving as a touch sensor, such that touch sensing and photosensing can be performed using the shared read-out line. No disconnection areas are provided between the read-out lines driven by the different driving circuits, or the disconnection areas are distributed. Abnormalities in image quality due to the disconnection areas are prevented, and a sensing function using the shared read-out lines is provided.
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公开(公告)号：US20240178361A1
公开(公告)日：2024-05-30
申请号：US18389134
申请日：2023-11-13
Applicant: LG DISPLAY CO., LTD.
Inventor： HyunGon Kim , KwangSu Lim , Soyoung Lee , YoungIn Jang
CPC classification number: H01L33/62 , H01L25/167 , H01L2933/0066
Abstract: In one aspect, a display device includes a substrate having pixels each including a plurality of sub-pixels; a plurality of light-emitting elements on the plurality of sub-pixels and each including one or more n-type electrodes and a p-type electrode; a first connection electrode on each of the plurality of light-emitting elements of the plurality of sub-pixels and including a concave portion that overlaps the one or more n-type electrodes; and a second connection electrode on each of the plurality of light-emitting elements of the plurality of sub-pixels and including a convex portion that overlaps the p-type electrode. The concave portion and the convex portion extend in a first direction in each of a first subset of the plurality of sub-pixels, and the concave portion and the convex portion extend in a second direction different from the first direction in each of a second subset of the plurality of sub-pixels.
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公开(公告)号：US20240420623A1
公开(公告)日：2024-12-19
申请号：US18653715
申请日：2024-05-02
Applicant: LG Display Co., Ltd.
Inventor： Junhyeok Lee , YoungIn Jang , Soyoung Lee , HyunGon Kim
Abstract: A display device includes a display panel in which a plurality of first pixel areas and a plurality of second pixel areas each including a plurality of sub pixels are defined; a pixel circuit which is disposed in each of the plurality of sub pixels and includes a driving transistor; and a welding transistor which selectively connects the pixel circuits of the first pixel area and a second pixel area which are adjacent to each other, among the plurality of first pixel areas and the plurality of second pixel areas. Accordingly, the welding transistor is used to further supply a driving current of the pixel circuit to the light emitting diode of an adjacent sub pixel to improve the luminance.
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Patent Agency Ranking
公开(公告)号：US20210019035A1
公开(公告)日：2021-01-21
申请号：US16884389
申请日：2020-05-27
Applicant: LG DISPLAY CO., LTD
Inventor： DukKeun Yoo , HyunGon Kim
Abstract: The disclosure relates to display devices which include data lines for transferring driving signals, gate lines for transferring scan signals, a plurality of pixel electrodes respectively disposed in a plurality of subpixels, common electrodes supplying a display common voltage upon display driving, readout lines connected with the common electrodes, and photo transistors including a gate, a first, and a second electrode. The second electrode of each of the photo transistors is electrically connected with the common electrode. The first electrode and gate electrode of each of the photo transistors is electrically connected with a common electrode or a gate line for display driving. Thus, it is possible to operate photo sensors to perform photo sensing even without all or some of the signal lines necessary for the operation of the photo sensors, thereby increasing the aperture ratio and transmittance.
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公开(公告)号：US10860135B2
公开(公告)日：2020-12-08
申请号：US16709824
申请日：2019-12-10
Applicant: LG DISPLAY CO., LTD.
Inventor： DukKeun Yoo , HyunGon Kim
Abstract: A display panel, a display device, and a driving circuit including both a touch sensor configuration and a photosensor configuration are disclosed. The driving circuit comprises a multi-sensing circuit electrically connected to a plurality of common electrodes, disposed in a display panel, through a plurality of read-out lines disposed in the display panel; and a photo-driving circuit driving a plurality of photo-driving lines and a plurality of photo-control lines through which a photo-driving signal and a photo-control signal are transferred to a plurality of phototransistors disposed in the display panel, wherein each of the plurality of phototransistors comprises a gate electrode to which the photo-control signal is applied, a first electrode to which the photo-driving signal is applied, and a second electrode serving as a signal output node, with a signal being output to the second electrode in response to illumination light, and the multi-sensing circuit receives the signal, output from the second electrode of each of the plurality of phototransistors, through a corresponding read-out line among the plurality of read-out lines. A high aperture ratio is obtained since electrode and line structures for touch sensing and photosensing are efficiently designed.
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公开(公告)号：US20250126948A1
公开(公告)日：2025-04-17
申请号：US18784615
申请日：2024-07-25
Applicant: LG Display Co., Ltd.
Inventor： TaeYong Kim , MinSeok Kim , HyunGon Kim , Soyi Lee
IPC: H01L27/15 , G09G3/3233
Abstract: A display device presented herein includes: a substrate having a plurality of pixel areas; a plurality of pixels in the plurality of pixel areas, each of the plurality of pixels including a first sub-pixel, a second sub-pixel, a third sub-pixel, and a reserve sub-pixel; a first plurality of light-emitting elements in the first sub-pixel and the reserve sub-pixel; a second plurality of light-emitting elements in the second sub-pixel and the reserve sub-pixel; and a third plurality of light-emitting elements in the third sub-pixel and the reserve sub-pixel; in which a first light-emitting element of the first plurality of light-emitting elements, a second light-emitting element of the second plurality of light-emitting elements, and a third light-emitting element of the third plurality of light-emitting elements are on different layers in the reserve sub-pixel.
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公开(公告)号：US12165932B2
公开(公告)日：2024-12-10
申请号：US18202807
申请日：2023-05-26
Applicant: LG Display Co., Ltd.
Inventor： Seeun Kim , JongSung Kim , HyunGon Kim , YoungIn Jang
Abstract: A display device can include a substrate including a plurality of pixels; a plurality of light emitting diodes disposed in each of the plurality of pixels; a color conversion member disposed over at least two light emitting diodes among the plurality of light emitting diodes in one pixel among the plurality of pixels; and a light shielding pattern disposed over at least one light emitting diode among the plurality of light emitting diodes in the one pixel for forming a black sub pixel that does not emit light outside of the display device. Also, each of the plurality of pixels includes a first sub pixel, a second sub pixel, a third sub pixel, and one or more black sub pixels.
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公开(公告)号：US11281328B2
公开(公告)日：2022-03-22
申请号：US16884389
申请日：2020-05-27
Applicant: LG DISPLAY CO., LTD
Inventor： DukKeun Yoo , HyunGon Kim
Abstract: The disclosure relates to display devices which include data lines for transferring driving signals, gate lines for transferring scan signals, a plurality of pixel electrodes respectively disposed in a plurality of subpixels, common electrodes supplying a display common voltage upon display driving, readout lines connected with the common electrodes, and photo transistors including a gate, a first, and a second electrode. The second electrode of each of the photo transistors is electrically connected with the common electrode. The first electrode and gate electrode of each of the photo transistors is electrically connected with a common electrode or a gate line for display driving. Thus, it is possible to operate photo sensors to perform photo sensing even without all or some of the signal lines necessary for the operation of the photo sensors, thereby increasing the aperture ratio and transmittance.
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