公开(公告)号：US20210150964A1

公开(公告)日：2021-05-20

申请号：US16727922

申请日：2019-12-27

Applicant: Novatek Microelectronics Corp.

Inventor： Li Li ,  Qiqiang Han ,  JianHua Liang

IPC: G09G3/20 ,  G09G3/3258

Abstract: The disclosure provides an image processing apparatus and an operation method thereof. The image processing apparatus includes a sticking model circuit and a dynamic adjustment circuit. The sticking model circuit correspondingly provides degradation information according to pixel data of a current pixel. The dynamic adjustment circuit dynamically adjusts original image data of the current pixel according to the degradation information to generate output data. The dynamic adjustment circuit converts a first sub-pixel of the current pixel to at least one second sub-pixel of the current pixel when luminance is maintained. The dynamic adjustment circuit provides the output data to the sticking model circuit.

公开(公告)号：US11199734B2

公开(公告)日：2021-12-14

申请号：US16903386

申请日：2020-06-17

Applicant: Novatek Microelectronics Corp.

Inventor： JianHua Liang ,  Xiao Zhang ,  Qiqiang Han

IPC: G02F1/133 ,  G02F1/13357 ,  G02F1/1335

Abstract: The disclosure provides an image adjustment device configured to be different modes according to whether the adopted display is a light emitting diode display or a liquid crystal display, and including a duty cycle calculator, an intensity calculator and a compensator. In a first mode, the duty cycle calculator determines a respective type of each segment according to brightness information of each segment, and sets a duty cycle value according to the type of the segment. In a second mode, the duty cycle calculator calculates the duty cycle value according to the brightness information of each segment. The intensity calculator calculates the pixel intensity of the segment based on the duty cycle value and a light diffusion coefficient set. The compensator generates a pixel gain value according to the intensity value of each pixel of the segment, and adjusts the pixel value according to the pixel gain value.

公开(公告)号：US11587503B2

公开(公告)日：2023-02-21

申请号：US17094811

申请日：2020-11-11

Applicant: Novatek Microelectronics Corp.

Inventor： Qiqiang Han ,  JianHua Liang ,  YuanJia Du

IPC: G09G3/3208 ,  H01L27/32 ,  G09G5/10

Abstract: A method of and a display control device for emulating OLED degradation for an OLED display panel are proposed, where the OLED display panel includes pixels, and each of the pixels includes subpixels. The method includes the following steps. A current image signal is received. A driving signal level for each of the subpixels is determined based on the current image signal. An actual surface temperature of each of the subpixels is estimated based on the corresponding driving signal level. An accumulated stress of each of the subpixels is computed based on the corresponding driving signal level, the corresponding actual surface temperature, and at least one previous image signal prior to the current image signal. A degradation map that emulates OLED degradation of the OLED display panel is generated based on the accumulated stress of each of the subpixels.

公开(公告)号：US11011101B2

公开(公告)日：2021-05-18

申请号：US15985611

申请日：2018-05-21

Applicant: NOVATEK Microelectronics Corp.

Inventor： Xiao Zhang ,  Danyu Fu ,  Yuanjia Du ,  Jianhua Liang ,  Qiqiang Han

IPC: G09G3/20

Abstract: A method of controlling a display device is disclosed including receiving a plurality of sub-pixel values for a target pixel among a plurality of pixels of an image frame, wherein the sub-pixel values of the target pixel comprise red, green, and blue sub-pixel values; calculating a pixel-based boosting ratio corresponding to the target pixel according to the sub-pixel values of the target pixel; and adjusting at least one of a plurality of backlight duties associated with the target pixel and the plurality of sub-pixel values of the target pixel according to the pixel-based boosting ratio.

公开(公告)号：US20220148499A1

公开(公告)日：2022-05-12

申请号：US17094811

申请日：2020-11-11

Applicant: Novatek Microelectronics Corp.

Inventor： Qiqiang Han ,  JianHua Liang ,  YuanJia Du

IPC: G09G3/3208 ,  H01L27/32 ,  G09G5/10

Abstract: A method of and a display control device for emulating OLED degradation for an OLED display panel are proposed, where the OLED display panel includes pixels, and each of the pixels includes subpixels. The method includes the following steps. A current image signal is received. A driving signal level for each of the subpixels is determined based on the current image signal. An actual surface temperature of each of the subpixels is estimated based on the corresponding driving signal level. An accumulated stress of each of the subpixels is computed based on the corresponding driving signal level, the corresponding actual surface temperature, and at least one previous image signal prior to the current image signal. A degradation map that emulates OLED degradation of the OLED display panel is generated based on the accumulated stress of each of the subpixels.

公开(公告)号：US11328646B2

公开(公告)日：2022-05-10

申请号：US16727922

申请日：2019-12-27

Applicant: Novatek Microelectronics Corp.

Inventor： Li Li ,  Qiqiang Han ,  JianHua Liang

IPC: G09G3/20 ,  G09G3/3258

Abstract: The image processing apparatus includes a sticking model circuit and a dynamic adjustment circuit. The sticking model circuit correspondingly provides degradation information according to pixel data of a current pixel. The dynamic adjustment circuit dynamically adjusts original image data of the current pixel according to the degradation information to generate output data. The dynamic adjustment circuit converts a first sub-pixel of the current pixel to at least one second sub-pixel of the current pixel when luminance is maintained. The dynamic adjustment circuit provides the output data to the sticking model circuit.