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公开(公告)号:WO2021197047A1
公开(公告)日:2021-10-07
申请号:PCT/CN2021/081032
申请日:2021-03-16
Inventor: LEE, Chu Rung
IPC: G09G3/3208 , G09G2310/0272 , G09G2320/043 , G09G3/3241 , G09G3/3258
Abstract: A pixel circuit (300) includes a pixel driver (302) configured to receive a data signal (DATA[M]) and drive a light emitting element (D) based on the data signal (DATA[M]), a first power signal (V1) coupled to an anode of the light emitting element (D) through the pixel driver (302), and a second power signal (V2) coupled to a cathode of the light emitting element (D). The second power signal (V2) is configured to vary based on the data signal (DATA[M]). In a first period (T1) of the data signal (DATA[M]), a value of the second power signal (V2) is configured to be lower than a value of the first power signal (V1), and in a second period (T2) of the data signal (DATA[M]), the value of the second power signal (V2) is configured to be higher than the value of the first power signal (V1).
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公开(公告)号:WO2021249164A1
公开(公告)日:2021-12-16
申请号:PCT/CN2021/095295
申请日:2021-05-21
Applicant: 京东方科技集团股份有限公司
IPC: G09G3/3208 , G09G2320/0233 , G09G2320/0257 , G09G2320/043
Abstract: 一种像素电路,包括:输入子电路、驱动控制子电路、发光控制子电路、驱动子电路、第一发光元件和第二发光元件;驱动控制子电路包括电容;输入子电路用于将数据信号端的信号提供给第一节点;驱动控制子电路通过控制电容两端的电压调节第一节点、第二节点和第三节点的电压;发光控制子电路用于在发光控制信号端的信号控制下,将第一电源信号端的信号提供给第二节点;驱动子电路用于在第一节点的信号控制下,导通或断开第二节点与第三节点之间的连接,使得第一发光元件在第一发光时段发光,在第二发光时段不发光,第二发光元件在第二发光时段发光,在第一发光时段不发光。
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公开(公告)号:WO2021128543A1
公开(公告)日:2021-07-01
申请号:PCT/CN2020/075664
申请日:2020-02-18
Applicant: 深圳市华星光电半导体显示技术有限公司
Inventor: 张留旗
IPC: G09G3/3225 , G09G2320/0233 , G09G2320/043
Abstract: 本申请公开了一种于显示面板中OLED效率衰减补偿方法、装置及系统,该方法包括以下步骤:根据加载在驱动型TFT预设数量灰阶的漏极电压,以及各对应漏极电压的输出电流,得到OLED器件的IV曲线;将IV曲线与IV曲线数据库模型进行比对,确定OLED器件的目标曲线和第一匹配曲线;根据第一匹配曲线的相应测量时间点,确定LV曲线数据库模型中对应测量时间点的第二匹配曲线;基于第二匹配曲线,得到对应目标亮度的目标电压;并基于目标曲线,得到对应目标电压的目标电流;基于驱动型TFT的特性曲线,处理目标电压,目标电流和漏极电压,得到驱动型TFT的补偿后栅极电压。本申请能够实现补偿OLED器件发光效率的衰减,提高显示面板的显示效果,使得显示面板显示均匀。
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公开(公告)号:WO2020227242A1
公开(公告)日:2020-11-12
申请号:PCT/US2020/031371
申请日:2020-05-04
Applicant: FACEBOOK TECHNOLOGIES, LLC
Inventor: BLANK, William, Thomas , PAPPAS, Ilias , MICHAEL, Yee
IPC: H04N9/31 , G02B26/10 , G09G3/34 , G02B2027/0116 , G02B2027/0178 , G02B26/0833 , G02B26/101 , G02B26/105 , G02B27/0101 , G02B27/0172 , G06F1/163 , G06F1/1639 , G06F3/011 , G09G2310/0235 , G09G2320/043 , G09G2320/0646 , G09G2330/025 , G09G3/002 , G09G3/02 , G09G3/2003 , G09G3/2022 , G09G3/2025 , G09G3/32 , G09G3/3413 , H04N9/3129 , H04N9/3164
Abstract: Embodiments relate to driving first light emitting diodes (LEDs) of a first color to emit light during first subframes of emission frames, driving second LEDs of a second color to emit light during second subframes of emission frames, and driving third LEDs of a third color to emit light during the second subframes of emission frames. Light emitted from the first, second, and third LEDs is directed onto a mirror that reflects the light onto a plurality of pixel locations of an image field. The first, second, and third LEDs are aligned on an array of LEDs such that the first LEDs are at a first distance away from the second LEDs, and the first LEDs are at a second distance away from the third LEDs.
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