公开(公告)号：US20210327343A1

公开(公告)日：2021-10-21

申请号：US16621937

申请日：2019-03-27

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Dongxu HAN ,  Tieshi WANG ,  Zhongyuan WU ,  Yongqian LI ,  Pan XU ,  Jinxia HU

IPC: G09G3/3225

Abstract: Brightness compensation method and apparatus for pixel point are provided. The compensation method includes measurement processes of N times, N≥2. Each measurement process includes: obtaining images displayed on the display screen under different gray-scale signals, and extracting brightness of pixel points in the images; calculating difference parameters between brightness of the pixel points and brightness of the reference pixel point under the different gray-scale signals; fitting the difference parameters of the pixel points with initial brightness of the pixel points under the different gray-scale signals, to obtain initial brightness-difference parameter curves of the pixel points; calculating compensation parameters of the pixel points; during an (i)th measurement process, i=2 to N, images displayed on the display screen under the different gray-scale signals are obtained by compensating the initial brightness of the pixel points under the different gray-scale signals based on the compensation parameters obtained during an (i−1)th measurement process.

公开(公告)号：US20210202603A1

公开(公告)日：2021-07-01

申请号：US16976827

申请日：2019-11-29

Applicant: HEFEI BOE JOINT TECHNOLOGY CO., LTD. ,  BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Zhongyuan WU ,  Yongqian LI ,  Can YUAN ,  Zhidong YUAN ,  Meng LI ,  Dacheng ZHANG ,  Lang LIU

IPC: H01L27/32

Abstract: A display substrate, a manufacturing method thereof and a display device are provided. The display substrate includes a base substrate and sub-pixels on the base substrate. At least one sub-pixel includes a first transistor, a second transistor, a third transistor, and a storage capacitor. The display substrate further includes an extension portion protruding from the gate electrode of the first transistor, and the extension portion is extended from the gate electrode of the first transistor in the second direction; the extension portion is at least partially overlapped with the first electrode of the second transistor in a direction perpendicular to the base substrate and is electrically connected with the first electrode of the second transistor; in the first direction, the extension portion has a second side closest to the second capacitor electrode, and the second side is recessed in a direction away from the second capacitor electrode.

公开(公告)号：US20200098306A1

公开(公告)日：2020-03-26

申请号：US16621310

申请日：2019-05-10

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Mingi CHU ,  Zhongyuan WU

IPC: G09G3/32

Abstract: The present disclosure relates to the field of display technologies, and provides a pixel circuit including: a display pixel driving circuit, a sensing line, and at least one non-display pixel driving circuit. The display pixel driving circuit is configured to drive a display sub-pixel, and includes a first driving transistor. The sensing line is coupled to an output end of the first driving transistor, and configured to sense a current of an output end of the first driving transistor; each of the non-display pixel driving circuits is configured to drive one non-display sub-pixel, and the non-display pixel driving circuit includes a second driving transistor. An output end of the second driving transistor is coupled to the sensing line to input a compensation current to the sensing line.

公开(公告)号：US20170193904A1

公开(公告)日：2017-07-06

申请号：US15102993

申请日：2015-10-23

Applicant: BOE TECHNOLOGY GROUP CO., LTD. ,  HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.

Inventor： Pan XU ,  Zhongyuan WU ,  Yuting ZHANG ,  Yongqian LI

IPC: G09G3/3258 ,  G09G3/3241

CPC classification number: G09G3/3258 ,  G09G3/3241 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0248 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/043

Abstract: There are disclosed a pixel circuit and a driving method of the same and a display apparatus. The pixel circuit comprises: a driving transistor (Tr), a storage capacitor (Cs), a data writing module (10), a light-emitting element (20) and a predetermined voltage writing module (30). A first terminal of the storage capacitor (Cs) is connected to a gate of the driving transistor (Tr) and a second terminal thereof is connected to a second electrode of the driving transistor (Tr). The predetermined voltage writing module (30) is configured to make the second electrode of the driving transistor (Tr) reach a predetermined potential in a pre-charging phase and a compensating phase; and the data writing module (10) is configured to store a data voltage of a data line into the storage capacitor (Cs) in the compensating phase. In the pixel circuit and the driving method thereof and the display apparatus, the driving current is not affected by the threshold voltage, and influence of the voltage across the light-emitting element on the driving current is eliminated, thereby the uniformity of luminance of the light-emitting element is raised and improving the display effect of the display apparatus is improved.

公开(公告)号：US20170103722A1

公开(公告)日：2017-04-13

申请号：US15122372

申请日：2015-08-31

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Chen SONG ,  Zhongyuan WU ,  Kun CAO ,  Hongjun XIE

IPC: G09G3/36

CPC classification number: G09G3/3677 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2330/021 ,  G11C19/287

Abstract: The present disclosure provides a shift register unit, a gate driving circuit and a display apparatus. The shift register unit comprises: a first latch module having a first input terminal connected to a first clock signal terminal or a second clock signal terminal, a second input terminal for receiving a pulse signal, and an output terminal; and a second latch module having a first input terminal connected to the first clock signal terminal or the second clock signal terminal, a second input terminal connected to the output terminal of the first latch module, and an output terminal connected to a signal output terminal of the shift register unit. The first input terminal of the first latch module and the first input terminal of the second latch module are connected to the same signal terminal.

公开(公告)号：US20170039990A1

公开(公告)日：2017-02-09

申请号：US15085124

申请日：2016-03-30

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Danna SONG ,  Zhongyuan WU

IPC: G09G5/02

CPC classification number: G09G3/3225 ,  G09G3/2003 ,  G09G2300/0452 ,  G09G2300/0465

Abstract: The invention provides a pixel array, including N rows and M columns of pixel units, wherein each pixel unit includes two sub-pixels, two adjacent pixel units in the same row include sub-pixels of three colors including a red sub-pixel, a green sub-pixel and a blue sub-pixel, every two adjacent sub-pixels in the same row have different colors, in the pixel array, all the sub-pixels have the same shape, every two adjacent green sub-pixels are provided with a sub-pixel of other color therebetween, and every two adjacent blue sub-pixels are provided with three sub-pixels of other colors therebetween. The invention also provides a display device, a driving method and a driving device. Employing the pixel array of the invention, an image is displayed with a higher visual resolution, and a mask plate for manufacturing the pixel array has a larger minimal size, and the pixel array is manufactured with high yield.

Abstract translation: 本发明提供一种像素阵列，包括N行和M列的像素单元，其中每个像素单元包括两个子像素，同一行中的两个相邻像素单元包括三种颜色的子像素，包括红色子像素， 绿色子像素和蓝色子像素，同一行中每两个相邻的子像素具有不同的颜色，在像素阵列中，所有子像素具有相同的形状，每两个相邻的绿色子像素被提供 在其间的其他颜色的子像素和每两个相邻的蓝色子像素设置有三个其他颜色的子像素。 本发明还提供一种显示装置，驱动方法和驱动装置。 采用本发明的像素阵列，以更高的视觉分辨率显示图像，并且用于制造像素阵列的掩模板具有更大的最小尺寸，并且以高产率制造像素阵列。

公开(公告)号：US20170033192A1

公开(公告)日：2017-02-02

申请号：US14913581

申请日：2015-07-28

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Longyan WANG ,  Yongqian LI ,  Kun CAO ,  Quanhu LI ,  Jingwen YIN ,  Baoxia ZHANG ,  Cuili GAI ,  Zhongyuan WU ,  Gang WANG

IPC: H01L29/45 ,  H01L29/22 ,  H01L29/20 ,  H01L29/786 ,  H01L21/4763 ,  H01L29/423 ,  H01L21/285 ,  H01L21/443 ,  H01L21/3213 ,  H01L29/24 ,  H01L29/66

CPC classification number: H01L29/45 ,  H01L21/28575 ,  H01L21/32134 ,  H01L21/443 ,  H01L21/47635 ,  H01L29/20 ,  H01L29/2003 ,  H01L29/22 ,  H01L29/24 ,  H01L29/42356 ,  H01L29/66522 ,  H01L29/66742 ,  H01L29/66969 ,  H01L29/786 ,  H01L29/78681 ,  H01L29/7869

Abstract: A thin film transistor, a manufacturing method thereof, and a display device are provided. The thin film transistor includes a gate electrode (21), an active layer (23), a source electrode (241) and a drain electrode (242). The source electrode (241) and the drain electrode (242) are formed of at least two materials, the forming materials of the source electrode (241) and the drain electrode (242) can create a cell reaction in a corresponding etching solution so as to be etched, and material of the active layer (23) is not corroded by the etching solution. With the thin film transistor and manufacturing method thereof according to embodiments of the invention, a problem that an active layer is liable to be corroded in an etching procedure of a source electrode and a drain electrode can be solved, and thus the thin film transistor device can be manufactured by using a back channel etch process. Consequently, the process number for manufacture of the thin film transistor is decreased, and the manufacturing cost is saved.

Abstract translation: 提供薄膜晶体管，其制造方法和显示装置。 薄膜晶体管包括栅电极（21），有源层（23），源电极（241）和漏电极（242）。 源极（241）和漏电极（242）由至少两种材料形成，源电极（241）和漏电极（242）的形成材料可以在相应的蚀刻溶液中产生电池反应，从而 被蚀刻，并且有源层（23）的材料不被蚀刻溶液腐蚀。 利用根据本发明的实施例的薄膜晶体管及其制造方法，可以解决在源电极和漏电极的蚀刻过程中有源层易于腐蚀的问题，因此薄膜晶体管器件 可以通过使用背沟道蚀刻工艺来制造。 因此，薄膜晶体管的制造工序减少，节省了制造成本。

公开(公告)号：US20160240127A1

公开(公告)日：2016-08-18

申请号：US14349860

申请日：2013-08-13

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Liye DUAN ,  Lirong WANG ,  Zhongyuan WU

IPC: G09G3/20 ,  G09G3/3241

CPC classification number: G09G3/2007 ,  G09G3/3241 ,  G09G2300/0819 ,  G09G2310/0251 ,  G09G2320/0271

Abstract: An AMOLED pixel circuit and driving method are disclosed. The AMOLED pixel circuit comprises a first transistor(T1), a second transistor(T2), a third transistor(T3), a fourth transistor(T4), a fifth transistor(T5), a sixth transistor(T6), a seventh transistor(T7), an eighth transistor(T8), a first capacitor(C1), a second capacitor(C2), a current source and a light-emitting device(OLED). The AMOLED pixel circuit can perform a rapid charging in a low gray scale state; different currents may be provided according to information on a high or low gray scale, and thus the AMOLED pixel circuit may be applied widely; an output current during a light-emitting period is a normal operational current of the light-emitting device; therefore not only a charging process is expedited, but also a normal operation of the light-emitting device is ensured.

Abstract translation: 公开了一种AMOLED像素电路和驱动方法。 AMOLED像素电路包括第一晶体管（T1），第二晶体管（T2），第三晶体管（T3），第四晶体管（T4），第五晶体管（T5），第六晶体管（T6），第七晶体管 （T7），第八晶体管（T8），第一电容器（C1），第二电容器（C2），电流源和发光器件（OLED）。 AMOLED像素电路可以在低灰度状态下执行快速充电; 可以根据关于高或低灰度级的信息提供不同的电流，因此可以广泛应用AMOLED像素电路; 在发光周期期间的输出电流是发光装置的正常工作电流; 因此，不仅加快了充电过程，而且确保了发光装置的正常操作。

公开(公告)号：US20160180770A1

公开(公告)日：2016-06-23

申请号：US14646179

申请日：2014-09-26

Applicant: BOE Technology Group Co., Ltd.

Inventor： Liye DUAN ,  Zhongyuan WU ,  Lirong WANG ,  Kun CAO

IPC: G09G3/32

CPC classification number: G09G3/3233 ,  G09G3/3291 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2300/0866 ,  G09G2310/0289 ,  G09G2320/0233 ,  G09G2320/0626 ,  G09G2330/021

Abstract: There are provided a pixel circuit and a driving method thereof, and a display apparatus. The pixel circuit comprises: a first transistor (T1), a second transistor (T2), a third transistor (T3), a storage capacitor (C1) and a light emitting device (L). A gate of the first transistor (T1) is connected to a first control signal terminal (S1), and a first electrode thereof is connected to a data signal terminal (DATA); a gate of the second transistor (T2) is connected to a second electrode of the first transistor (T1), a first electrode thereof is connected to a second electrode of the third transistor (T3), and a second electrode thereof is connected to a first terminal of the light emitting device (L); a gate of the third transistor (3) is connected to a second control signal terminal (S2), and a first electrode thereof is connected to a first power supply signal terminal (ELVDD); one terminal of the storage capacitor (C1) is connected to the gate of the second transistor (T2), and the other terminal thereof is connected to the second electrode of the second transistor (T2); one terminal of a parasitic capacitor (C2) formed by the light emitting device is connected to the first terminal of the light emitting device (L), and the other terminal thereof is connected to a second terminal of the light emitting device (L); and the second terminal of the light emitting device (L) is further connected to a second power supply signal terminal (ELVSS). The pixel circuit can compensate for the threshold voltage drift of TFT effectively and rise display effect.

Abstract translation: 提供了像素电路及其驱动方法和显示装置。 像素电路包括：第一晶体管（T1），第二晶体管（T2），第三晶体管（T3），存储电容器（C1）和发光器件（L）。 第一晶体管（T1）的栅极连接到第一控制信号端子（S1），其第一电极连接到数据信号端子（DATA）; 第二晶体管（T2）的栅极连接到第一晶体管（T1）的第二电极，其第一电极连接到第三晶体管（T3）的第二电极，并且其第二电极连接到 发光装置（L）的第一端子; 第三晶体管（3）的栅极连接到第二控制信号端子（S2），其第一电极连接到第一电源信号端子（ELVDD）; 存储电容器（C1）的一个端子连接到第二晶体管（T2）的栅极，另一个端子连接到第二晶体管（T2）的第二电极; 由发光器件形成的寄生电容器（C2）的一个端子连接到发光器件（L）的第一端子，并且其另一个端子连接到发光器件（L）的第二端子; 并且发光器件（L）的第二端子进一步连接到第二电源信号端子（ELVSS）。 像素电路可以有效地补偿TFT的阈值电压漂移并提高显示效果。

公开(公告)号：US20150339974A1

公开(公告)日：2015-11-26

申请号：US14348720

申请日：2013-06-26

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Zhongyuan WU ,  Liye DUAN

IPC: G09G3/32 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/2003 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0248 ,  G09G2310/0251 ,  G09G2310/0289 ,  G09G2320/0233 ,  G09G2320/029 ,  G09G2320/043 ,  G09G2320/045

Abstract: A pixel unit circuit, a compensating method thereof and a display device. The pixel unit circuit includes a driving transistor, a first transistor, a second transistor, a third transistor, a fourth transistor, a storage capacitor and a light-emitting device (OLED). The pixel unit circuit, the compensating method thereof and the display device may compensate the light emitting device by combining an internal compensation and an external compensation, and have advantages of both the internal compensation and the external compensation. The Mura phenomenon caused by non-uniformity in threshold voltages or drifts of threshold voltages in the N-type depletion or enhanced driving transistor TFT may be eliminated effectively by the internal compensation, which may enhance a display effect. Additionally, the pixel unit circuit, the compensating method thereof and the display device may have a function for extracting characteristics of the driving TFT and characteristics of the light emitting device, which may be applicable to the external compensation driving effectively.

Abstract translation: 像素单元电路，其补偿方法和显示装置。 像素单元电路包括驱动晶体管，第一晶体管，第二晶体管，第三晶体管，第四晶体管，存储电容器和发光器件（OLED）。 像素单元电路及其补偿方法和显示装置可以通过组合内部补偿和外部补偿来补偿发光器件，并且具有内部补偿和外部补偿的优点。 在N型耗尽或增强驱动晶体管TFT中阈值电压不均匀或阈值电压漂移引起的Mura现象可以通过内部补偿被有效地消除，这可以增强显示效果。 此外，像素单元电路及其补偿方法和显示装置可以具有用于提取驱动TFT的特性和发光器件的特性的功能，其可以有效地适用于外部补偿驱动。