公开(公告)号：US20190006452A1

公开(公告)日：2019-01-03

申请号：US16019207

申请日：2018-06-26

Applicant: LG Display Co., Ltd.

Inventor： Hyungnyuck CHO ,  Jungyoup SUK

IPC: H01L27/32 ,  H01L27/12 ,  G09G3/3258 ,  G09G3/3233

Abstract: Provided is an electroluminescence display comprising a display panel where a plurality of pixels connected to a plurality of data lines and a plurality of gate lines are arranged. Each pixel comprises: a driving TFT that controls the current in a light-emitting element EL in response to a data voltage applied to a gate; and switching TFTs that supply a high-level power supply voltage to the driving TFT in response to a gate-on voltage of an emission signal and control signals applied to the source and drain of the driving TFT. The electroluminescence display switches between first and second modes, the first mode being a mode in which data writing and driving TFT characteristic compensation are performed within 1 horizontal period 1H by applying a data voltage to the gate of the driving TFT, and the second mode being a mode in which data writing is performed within the 1 horizontal period by applying an initial voltage to the gate of the driving TFT and applying the data voltage upon completion of the compensation of the driving TFT characteristics.

公开(公告)号：US20180174518A1

公开(公告)日：2018-06-21

申请号：US15841659

申请日：2017-12-14

Applicant: LG Display Co., Ltd.

Inventor： Jungyoup SUK ,  Hyungnyuck CHO

IPC: G09G3/3233 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3291

CPC classification number: G09G3/3233 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/043 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2360/145

Abstract: An electroluminescent display device and a method of compensating for electrical characteristics of the electroluminescent display device are disclosed. The electroluminescent display includes a storage memory storing an average current-voltage expression of a display panel and a current value for each pixel, a parameter calculation unit calculating an offset and a gain for each pixel for causing current characteristics for each pixel based on the current value for each pixel to coincide with average current characteristics based on the average current-voltage expression, and a data correction unit correcting input image data to be written to each pixel based on the offset and the gain for each pixel. The average current-voltage expression and the current value for each pixel are obtained through a camera-based sensing process.

公开(公告)号：US20170004766A1

公开(公告)日：2017-01-05

申请号：US15191264

申请日：2016-06-23

Applicant: LG DISPLAY CO., LTD.

Inventor： Hyungnyuck CHO ,  Janghoon SONG

IPC: G09G3/3233 ,  G06F1/16 ,  G09G3/3275 ,  G09G3/3266

CPC classification number: G09G3/3233 ,  G06F1/1652 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2330/021 ,  G09G2330/022 ,  G09G2330/028 ,  G09G2340/0435

Abstract: Discussed are an organic light emitting display which can reduce flicker, along with power consumption, and a driving method thereof. In a low-power operation mode of the organic light emitting display, at least one holding frame is placed between writing frames in which image data is written, the output of the source driver is enabled during the writing frames, the output of the source driver is disabled during the holding frames, and the emission driver is controlled during the holding frames to increase the toggle frequency of the emission signal to be higher than or equal to N times the frame frequency (N is a positive integer greater than or equal to 2). The driving method can reduce the perceived flicker.

Abstract translation: 讨论了能够减少闪烁以及功耗的有机发光显示器及其驱动方法。 在有机发光显示器的低功率操作模式中，至少一个保持框架被放置在其中写入图像数据的写入帧之间，在写入帧期间源驱动器的输出被使能，源驱动器的输出 在保持帧期间被禁用，并且在保持帧期间控制发射驱动器以将发射信号的触发频率增加到高于或等于帧频的N倍（N是大于或等于2的正整数） ）。 驱动方法可以减少感知到的闪烁。