Driving methods and driving devices of display panels

    公开(公告)号:US10347210B2

    公开(公告)日:2019-07-09

    申请号:US15325081

    申请日:2017-01-07

    Abstract: The present disclosure relates to a driving method and a driving device of display panels. The driving method includes: dividing a saturation interval of an original image frame to be displayed by a display panel into a plurality of sub-saturation intervals; obtaining saturation values corresponding to each of the pixels in the original image frame; calculating numbers of pixels in the original image frame falling within each of the sub-saturation intervals in accordance with the saturation values corresponding to each of the pixels. In this way, the backlight brightness outputted by the backlight module may be adjusted in accordance with the saturation values of the original image frame so as to enhance the low brightness issue when a pure-color image is displayed by the display panel configured with RGBW sub-pixels.

    Backlight module, liquid crystal display device and backlight adjustment method thereof

    公开(公告)号:US10146088B2

    公开(公告)日:2018-12-04

    申请号:US14909109

    申请日:2016-01-14

    Abstract: The present invention provides a backlight module, a liquid crystal display device and a backlight adjustment method thereof; the backlight module comprises a light guide plate and a LED light bar located at an incident side of the light guide plate, and the LED light bar comprises a driving chip, LED lamps of at least two different color temperatures, which are alternately aligned, and the LED lamps of the same color temperature are coupled in series to construct a route, and each route is coupled to an adjustable resistance in series, and the routes constructed by the LED lamps after parallel connection are all coupled to the driving chip to construct a driving circuit, and the backlight module further comprises a control module, and the control module is coupled to the driving circuit.

    In-cell type touch panel and manufacturing method thereof, liquid crystal display device

    公开(公告)号:US10095335B2

    公开(公告)日:2018-10-09

    申请号:US15100370

    申请日:2016-05-12

    Abstract: An in-cell type touch panel, a manufacturing method thereof and a LCD device are provided. The touch panel includes an array substrate including: a glass substrate, thin film transistors, a planarization layer overlying the thin film transistors, a connecting wire on the planarization layer, a first insulating layer overlying the connecting wire, a touch sensing electrode on the first insulating layer, a second insulating layer overlying the touch sensing electrode and a pixel electrode on the second insulating layer. The connecting wire is connected to the touch sensing electrode by a first via hole, and the pixel electrode is connected to one of the thin film transistors by a second via hole. The touch sensing electrode further is configured as a common electrode, and during a displaying time period of an image frame, the touch sensing electrode transmits a common voltage and a touch control signal in time division manner.

    BACKLIGHT MODULE WITH NON-PLANAR LATERAL STRUCTURE AND LIQUID CRYSTAL DISPLAY APPARATUS USING THE SAME

    公开(公告)号:US20170108635A1

    公开(公告)日:2017-04-20

    申请号:US14994187

    申请日:2016-01-13

    CPC classification number: G02B6/0031 G02B6/0045 G02B6/0055 G02B6/0088

    Abstract: A backlight module with a non-planar lateral structure and LCD apparatus using the same are described. The backlight module comprises a light source; and a light guide body comprising a lateral incident surface and a non-planar lateral structure adjacent to the emitting surface and the bottom surface therebetween; wherein the non-planar lateral structure is opposite lateral incident surface, and a first incident light and a second incident light pass through the lateral incident surface and enter the light guide body; and wherein the non-planar lateral structure reflects and refracts the first incident light so that the reflected and refracted light of the first incident light returns from the non-planar lateral structure back to the light guide body, and the returned first incident light and the second incident light are reflected again from the bottom surface and emitted from the emitting surface to an LCD panel.

    Driving systems of display panels
    17.
    发明授权

    公开(公告)号:US10460644B2

    公开(公告)日:2019-10-29

    申请号:US15327633

    申请日:2017-01-13

    Abstract: The present disclosure relates to a driving system of display panels. The driving system includes a main board and a display panel. The main board is configured with a driving chip, and the driving chip electrically connects to the display panel via a flexible circuit board to drive the display panel to display. With such configuration, the driving system is configured with the main board and the driving chip, and the driving chip is arranged on the main board, instead of the flexible circuit board. With such configuration, the space of the display area occupied by the components is reduced so as to realize the narrow border design for a top border and a bottom border of the display panel. In this way, the screen ratio of the display panel is increased.

    Driving methods and driving devices of display panels

    公开(公告)号:US10347199B2

    公开(公告)日:2019-07-09

    申请号:US15325082

    申请日:2017-01-07

    Abstract: The present disclosure relates to a driving method and a driving device of display panels. The driving method includes: obtaining three-color sub-pixel data of each of pixels of a current image, obtaining a saturation value corresponding to each of the pixels in accordance with the three-color sub-pixel data of each of the pixels, obtaining a current background-white ratio in accordance with the three-color sub-pixel data and the saturation value of each of the pixels, determining whether the current background-white ratio is within a predetermined adjustment range, and reducing a white grayscale value of four-color sub-pixel data of the current image in accordance with the current background-white ratio and outputting the reduced white grayscale value to a display panel. In this way, the darker pure-color effect due to the high contrast may be reduced, which effectively enhances the darker pure-color issue of the RGBW display panel.

    Driving methods and driving devices of display panels

    公开(公告)号:US10204568B2

    公开(公告)日:2019-02-12

    申请号:US15325810

    申请日:2017-01-07

    Abstract: The present disclosure relates to a driving method and a driving device of display panels. The driving method includes: obtaining three-color sub-pixel data of each of pixels of a current image; obtaining a saturation value and a Chroma value corresponding to each of the pixels; determining if the saturation value corresponding to each of the pixels is within a predetermined range; obtaining a white-grayscale-added value in accordance with the Chroma value corresponding to the pixel, adopting the white-grayscale-added value as a white grayscale value of the four-color sub-pixel data corresponding to the pixel, and outputting the white grayscale value to the display panel upon determining the saturation value corresponding to the pixel is within the predetermined range. In this way, the brightness of the pure-color image displayed on the display panel may be enhanced, and there is no darker issue when the pure-color image is displayed.

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