Pixel array, driving method thereof, display panel and display device

• US 9,773,445 B2
• Filed: 06/30/2014
• Issued: 09/26/2017
• Est. Priority Date: 12/30/2013
• Status: Expired due to Fees

• Current Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Original Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Inventors: Guo, Renwei, Dong, Xue
• Primary Examiner(s): Leiby, Christopher E
• Application Number:
  US14/415,947
• Publication Number:
  US 20160019825A1
• Time in Patent Office: 1,184 Days
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2300/08 Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 2340/0457 Improvement of perceived resolution by subpixel rendering
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 3/2074 using sub-pixels

Abstract

The present invention provides a pixel array comprising a plurality of pixel units, each of which comprises three sub-pixels in different colors, wherein, in each pixel unit, any two adjacent sub-pixels are combined into a pixel block. Compared to the prior art, the width of the sub-pixel in the present invention increases, which reduces the difficulty of the manufacturing process of the pixel array and improves product yield. The present invention further provides a driving method of the pixel array, a display panel including the pixel array, and a display device including the display panel. When driving the above pixel array with the driving method, granular sensation of the display panel including the pixel array can be reduced, and a display effect of a display panel with higher resolution in the same size can be achieved.

Claims

1. A driving method of a pixel array, wherein, the pixel array comprises a plurality of pixel units, each of which comprises three sub-pixels in different colors, in each pixel unit, any two adjacent sub-pixels are combined into a pixel block having a square shape, a width of each of the sub-pixels is a half of a length of each of the sub-pixels, and the driving method comprises steps of:

S1, calculating theoretical brightness values of an image to be displayed at respective sub-pixels;

S2, calculating actual brightness values of the respective sub-pixels, wherein, the actual brightness value of each sub-pixel at least comprises a sum of a part of the theoretical brightness value of the sub-pixel and a part of the theoretical brightness values of one or more sub-pixels in the same color as the sub-pixel in the same row; and

S3, inputting signals to the respective sub-pixels, so that the respective sub-pixels reach the actual brightness values calculated in step S2,

wherein, in step S2, the actual brightness value of each sub-pixel comprises the sum of a part of the theoretical brightness value of the sub-pixel and a part of the theoretical brightness values of one or more sub-pixels in the same color as the sub-pixel only in the same row minus a part of the theoretical brightness values of one or more sub-pixels in the same color as the sub-pixel in different rows,

and wherein, the pixel array comprises X rows and Y columns of sub-pixels, X and Y are whole numbers, and in step S2, the actual brightness value A(m, n) of the sub-pixel in row m and column n is calculated according to the following formula;