Boe Technology Group Co., Ltd.

Beijing Boe Optoelectronics Technology Co., Ltd.

Chulgyu Jung

Shou Li

Yifang Chu

Yuxin Bi

Chengqi Zhou

Hong Wang

Heecheol Kim

Jiyang Shao

Hyunsic Choi

Gaoming Sun

Chengte Lai

Jianing Lu

Kiman Kim

This disclosure relates to a liquid crystal display and a display device. A plurality of photosensitive detectors is arranged in the frame region of the liquid crystal display panel. Light intensity distribution in the display region is estimated by a light intensity estimation module based on the light intensity detected by each photosensitive detector. Light intensity in a position corresponding to each light emitting pixel of the backlight source is determined based on the light intensity distribution in the display region estimated by the light intensity estimation module. Depending on the determined light intensity in a position corresponding to each light emitting pixel of the backlight source, luminance of the light emitting pixel in this corresponding position is controlled by a backlight driving circuit.

Liquid crystal display and display device

A backlight module and a display device are provided. The backlight module includes a light guide plate and a prism film arranged at a light-exiting side of the light guide plate. The display device includes the above backlight module and a lower polarizer arranged on the prism film.

Backlight module and display device

A two-stage operational amplifier is provided to comprise a bias voltage generator, a first stage operational amplifier and a second stage operational amplifier, wherein the first stage operational amplifier comprises a folded cascode amplifier circuit and a cross coupling load, the cross coupling load is coupled to a load differential pair in the folded cascode amplifier circuit, the cross coupling load comprises two transistors, the two transistors in the cross coupling load and two transistors in the load differential pair constitute two current mirror structures, which are cross coupled. In the solution, the cross coupling load is added to the load differential pair in the folded cascode amplifier circuit, to increase gain of the two-stage operational amplifier by using positive feedback and negative conductance gain enhancement technology; while parameters of MOSFETs in the folded cascode amplifier circuit are properly set to reduce noise of the two-stage operational amplifier.

Two-stage operational amplifier

The present disclosure provides a method for controlling a display device, a control apparatus for a display device, and a display device comprising the control apparatus. The method for controlling a display device may comprise the steps of: determining whether or not to perform peak driving for respective backlight sub-regions of the display device, the backlight sub-regions corresponding to sub-display areas of the display device; and performing, in response to a result of the above determining step, data signal compensation at least for sub-display areas whose average luminance values are lower than a preset first luminance threshold among the sub-display areas to which the backlight sub-regions that are determined to be subjected to peak driving correspond.

Method for controlling display device, control apparatus for display device and display device

An array substrate includes a base substrate, rows of gate lines on the base substrate, columns of data lines on the base substrate, and an array of sub-pixels defined by the gate lines and the data lines. The sub-pixels include first monochrome sub-pixels, second monochrome sub-pixels, third monochrome sub-pixels and white sub-pixels. Monochromatic lights from the first monochrome sub-pixels, the second monochrome sub-pixels and the third monochrome sub-pixels are capable of being mixed into white light. The gate lines are divided into a first kind of gate lines and a second kind of gate lines depending on whether an ordinal number of each of the rows of gate lines is an odd number or an even number. The monochrome sub-pixels are driven by the first kind of gate lines, and the white sub-pixels are driven by the second kind of gate lines.

Array substrate, display device and method for driving the same

The present invention discloses a backlight adjustment method and system, a backlight module and a display device. The backlight adjustment method includes: calculating a first outgoing light brightness of an backlight block corresponding to each image block; dividing a backlight source into a number of closed areas according to the first outgoing light brightnesses of the backlight blocks; calculating the number of backlight blocks included in each of the light-emitting closed areas; looking up a corresponding drive current in a preset correspondence table, wherein predetermined correspondence between the number of backlight blocks and the drive current applied to light up the corresponding number of backlight blocks and make an actual brightness of the corresponding area equal to a preset brightness is recorded in the correspondence table; and outputting the drive current obtained by the lookup operation to the backlight blocks in the light-emitting closed area.

Backlight adjustment method and system, backlight module and display device

Embodiments of the present invention provides an array substrate, a pixel driving method, and a display device, and the array substrate is provided with a first pixel unit set used to display a first image, and pixel units in the first pixel unit set are coupled to a first gate line set in the plurality of gate lines; a second pixel unit set configured to display a second image, and pixel units in the second pixel unit set are coupled to a second gate line set in the plurality of gate lines; the pixel units in the first pixel unit set and the pixel units in the second pixel unit set are alternately provided.

Array substrate, pixel driving method thereof and display device

A method for driving a three-dimensional (3D) display device according to this disclosure may include: determining a first 3D image to be displayed currently; and displaying a first partial image of the first 3D image during a first period, and displaying a second partial image of the first 3D image during a second period, so as to display the first 3D image completely. And there is a difference between display brightness of the first partial image and display brightness of the second partial image.

Method and apparatus for driving three-dimensional (3D) display device, 3D display device, 3D glasses, 3D display system, computer program and non-transient storage medium

The present invention provides a device and a method for adjusting Gamma voltage. The device for adjusting Gamma voltage comprises a Gamma voltage generating unit used for generating a plurality of Gamma voltages, the Gamma voltage generating unit comprising a plurality of output terminals for outputting the plurality of Gamma voltages; and a plurality of output units, output terminals of each of which are connected to output terminals of a corresponding Gamma voltage generating circuit among a plurality of Gamma voltage generating circuits of the display panel to be adjusted in one-to-one correspondence, the plurality of output units being used for outputting the plurality of Gamma voltages to output terminals of the Gamma voltage generating circuits.

Device and method for adjusting gamma voltage

The present disclosure provides a source driver IC. A first sub-driver circuit is provided to, within a time period, control polarities of driving voltages for a first subpixel and a third subpixel in pixel units at odd-numbered positions in a pixel row to be reverse to polarities of driving voltages for a second subpixel and a fourth subpixel in the pixel units at the odd-numbered positions in the pixel row, and a second sub-driver circuit is provided to, within the time period, control polarities of driving voltages for a first subpixel and a third subpixel in the pixel units at even-numbered positions to be identical to polarities of driving voltages for the second subpixel and the fourth subpixel in the pixel units at the odd-numbered positions but reverse to polarities of driving voltages for the second subpixel and the fourth subpixel in the pixel units at the even-numbered positions.

Source driver circuit, method for driving display panel and display device

The embodiments of the present invention provide a display device and a driving method thereof, which relates the display technology and can avoid occurrence of bad bright line of the image and improve display quality of the image. The display device may comprise a display panel and a backlight module disposed below the display panel, the display panel may comprise at least one display area, the display area may comprise at least one sub display area, the backlight module may comprise at least one light emitting unit, the light emitting units are in one-to-one correspondence with the sub display areas. Each sub display area may comprise at least one row of pixel units, the pixel units may comprise switch elements. When the switch elements of the first row of pixel units in a sub display area are turned on, the light emitting unit in the backlight module corresponding to the sub display area is in a turn-on state, when the switch elements in the last row of pixel units in a sub display area are turned off, the light emitting unit in the backlight module corresponding to the sub display area is in a turn-off state. The embodiments of the present invention may be applied to the manufacture of the display device.

Display device for mitigating the occurrence of undesirable bright lines in an image and a driving method thereof

A pixel array and a display device are provided. The pixel array includes a two-dimensional array that is formed by arranging a plurality of color sub-pixels and a plurality of white sub-pixels in the row direction and in the column direction, the color sub-pixels include color sub-pixels in three different colors. For color sub-pixels in each color in each row, color sub-pixels with the same color in the same row are arranged so that, the odd-numbered column sub-pixel and the even-numbered column sub-pixel alternate one by one, or they are disposed by way of groups each including two odd-numbered column sub-pixels alternating with even-numbered column sub-pixels or by way of groups each including two even-numbered column sub-pixels alternating with odd-numbered column sub-pixels.

Pixel array and display device

The invention relates to a driving method, compensation processor and driver device for liquid crystal display. The driving method includes steps of receiving data signal of a present frame; obtaining an average brightness value of the present frame; comparing the previous frame with the present frame, and when the difference between the average brightness values is larger than or equal to a set threshold, generating at least two back light driver pulse signals of which the duty ratios gradually changing, and outputting them to drive the back lights. The compensation processor includes a data analysis module, a data compensation module, a back light linear filtering module and a pulse generator module. The driver device employs the compensation processor of the present invention. The present invention employs the technical means of generating a plurality of back light driver pulse signals, realizes the gradual changing of the brightness of the back lights, and overcomes the picture flickering problem due to the sudden changing of the brightness of the back lights, thus improving the display effect of the LCD.

Growing community of inventors

Beijing, China

Chulgyu Jung