Liquid crystal display device and method of driving liquid crystal display panel
A liquid crystal display panel and driving voltage technology, applied to static indicators, instruments, etc., can solve problems such as affecting image quality, bluish cast, and serious viewing angles
Active Publication Date: 2017-09-12
HKC CORP LTD +1
View PDF4 Cites 39 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The brightness of VA-type liquid crystal driver saturates rapidly with the driving voltage at a large viewing angle, which leads to serious viewing angle deviation and affects the image quality
Since the brightness of the blue sub-pixel increases with the gray scale at the side viewing angle, the saturation trend of the brightness is more significant and faster than that of the red sub-pixel and green sub-pixel, which makes the image quality of the mixed color viewing angle show obvious defects of bluish cast
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0029] figure 1 It is a flowchart of a method for driving a liquid crystal display panel in an embodiment. The driving method of the liquid crystal display panel can improve the defect of color shift (or color difference) caused by the mismatch of the refractive index of the liquid crystal at a large viewing angle. In particular, it can effectively improve the defect of color shift caused by premature saturation of blue sub-pixels with large viewing angles. The liquid crystal display panel may be a TN, OCB, VA type liquid crystal display panel or a curved liquid crystal display panel, but is not ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a method of driving a liquid crystal display panel. The method comprises: pixels of a liquid crystal display panel are classified into a plurality of pixel groups; each pixel group includes an even number of pixels arranged in a matrix; a display hue of each pixel group is solved according to a picture input signal; a gray-scale value look-up table is obtained according to a hue range which the display hue belongs to; a gray scale value of each blue sub pixel in the gray-scale value look-up table corresponds to two groups of target gray scale value pairs; according to an average gray scale value of the blue sub pixels in each pixel group, the two groups of target gray scale value pairs are obtained by using the corresponding gray-scale value look-up table; corresponding two groups of drive voltage pairs are obtained based on the two groups of target gray scale value pairs in each pixel group; and according to the two groups of drive voltage pairs, the blue sub pixels of the corresponding pixel group are driven. With the driving method, a defect of colour cast caused by too early saturation of the large-view-angle blue sub pixel can be overcome. In addition, the invention also relates to a liquid crystal display device.
Description
technical field [0001] The invention relates to the field of liquid crystal display technology, in particular to a liquid crystal display device and a driving method for a liquid crystal display panel thereof. Background technique [0002] Traditional large-size liquid crystal display devices mostly use negative type VA liquid crystal or IPS liquid crystal technology. The brightness of VA-type liquid crystal driver saturates rapidly with the driving voltage at a large viewing angle, which leads to serious viewing angle deviation and affects the image quality. Since the brightness of the blue sub-pixel increases with the gray scale at the side viewing angle, the saturation trend of the brightness is more significant and faster than that of the red sub-pixel and green sub-pixel, which makes the image quality of the mixed color viewing angle show obvious defects of bluish cast. Contents of the invention [0003] Based on this, it is necessary to provide a liquid crystal disp...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/3611G09G3/3607G09G2320/02
Inventor 陈猷仁
Owner HKC CORP LTD