公开(公告)号：US11341906B2

公开(公告)日：2022-05-24

申请号：US16330449

申请日：2018-06-22

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Shengji Yang ,  Xue Dong ,  Xiaochuan Chen ,  Minghua Xuan ,  Jing Yu ,  Yingzi Wang ,  Weifeng Han ,  Huijuan Wang

IPC: G09G3/32 ,  G09G3/3208 ,  G06F3/041 ,  G06F3/042 ,  G09G3/3233 ,  H01L27/32

Abstract: The present disclosure provides a pixel circuit and a drive method thereof, and a touch display apparatus. The pixel circuit includes a pixel driving circuit, an optical sensing circuit, and a light-emitting element. The pixel driving circuit is configured to drive the light-emitting element to emit light, based on a first control signal from a first control line, a second control signal from a second control line, a scanning signal from a scanning line, and a data signal from a data line. The optical sensing circuit is configured to sense an optical signal, convert the sensed optical signal into an electric signal, and output the electric signal via a reading line based on the first control signal, the second control signal, the scanning signal, and the data signal.

公开(公告)号：US11537237B2

公开(公告)日：2022-12-27

申请号：US17315643

申请日：2021-05-10

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Shengji Yang ,  Xue Dong ,  Xiaochuan Chen ,  Pengcheng Lu ,  Lei Wang ,  Zhi Wang ,  Weifeng Han ,  Jing Yu

IPC: G06F3/047 ,  G06F3/041 ,  G06F3/044 ,  G09G3/3233

Abstract: The present disclosure relates to a touch panel. The touch panel includes a plurality of pixel units, and each of the plurality of pixel units includes a pixel circuit. The pixel circuit of each of the plurality of pixel units includes a driver, a writer, a power supply, a reset module, a controller and a compensator. The power supply includes a fourth switching transistor and a second capacitor. A gate of the fourth switching transistor is input with a light emitting control signal, and a source of the fourth switching transistor is input with a power supply signal. The second capacitor includes a first electrode connected to the driver; and a second electrode input with the power supply signal.

公开(公告)号：US11029774B2

公开(公告)日：2021-06-08

申请号：US16029162

申请日：2018-07-06

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Shengji Yang ,  Xue Dong ,  Xiaochuan Chen ,  Pengcheng Lu ,  Lei Wang ,  Zhi Wang ,  Weifeng Han ,  Jing Yu

IPC: G06F3/041 ,  G09G3/3225 ,  G06F3/044 ,  G09G3/3233

Abstract: The present disclosure relates to a touch panel and a touch screen. In the touch panel, the cathode is reused. In the touch control stage, each of the cathodes serves as a touch electrode, and normal display and touch functions of the touch panel can be realized by a time-division driving manner. Specifically, in the display stage, the pixel circuit controls the light emitting state of each pixel point (each pixel point has a light emitting device including a cathode); in the touch control stage, touch control signals are applied onto all control signal terminals of the pixel circuit and the cathodes at the same time. By doing so, on the basis that the touch control function can be realized, the synchronous driving of the touch control electrodes and the electrodes corresponding to the touch control electrodes can be realized.

公开(公告)号：US10789442B2

公开(公告)日：2020-09-29

申请号：US16322027

申请日：2018-05-18

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Shengji Yang ,  Xue Dong ,  Jing Lv ,  Xiaochuan Chen ,  Minghua Xuan ,  Weifeng Han

IPC: G06K9/00 ,  H01L27/32 ,  G09G3/3233

Abstract: A fingerprint recognition and pixel driving circuit and a display device including the circuit are provided. The circuit includes a first scan line, a second scan line, a third scan line, a light emission control line and a data writing line, a pixel driving sub-circuit for driving a light emitting element of a pixel to emit light according to the first scan signal, the second scan signal, the third scan signal, the light emission control signal, and the data signal, a fingerprint recognition sub-circuit that receives any two of the first scan signal, the second scan signal and the third scan signal through a first read terminal and a reset terminal to generate fingerprint data of a finger based on any two of the first scan signal, the second scan signal and the third scan signal, thereby realizing integration of the fingerprint recognition function with the pixel driving function.

公开(公告)号：US10580836B2

公开(公告)日：2020-03-03

申请号：US16074323

申请日：2018-01-03

Applicant: BOE Technology Group Co., Ltd.

Inventor： Shengji Yang ,  Xue Dong ,  Xiaochuan Chen ,  Minghua Xuan ,  Pengcheng Lu ,  Weifeng Han ,  Huijuan Wang ,  Jing Yu ,  Yingli Liu ,  Limin Yu

IPC: H01L27/32 ,  G06F3/041 ,  G06F3/044 ,  H01L51/52

Abstract: An OLED touch display panel, a method for manufacturing an OLED touch display panel and a touch display device are disclosed. The method comprises: forming a plurality of baffles by a patterning process on a TFT back plate, wherein each of the baffles defines a touch region; and forming a cathode layer on the TFT back plate on which the baffles have been formed. The cathode layer is partitioned by the baffles into a plurality of self-capacitance electrodes insulated from each other. Each of the self-capacitance electrodes is located within one of the touch regions and matches the touch region in shape.