公开(公告)号：US20150310830A1

公开(公告)日：2015-10-29

申请号：US14692957

申请日：2015-04-22

Applicant: Japan Display Inc.

Inventor： Kojiro Ikeda ,  Toshiyuki Nagatsuma ,  Masaaki Kabe ,  Amane Higashi ,  Tae Kurokawa ,  Fumitaka Gotoh ,  Akira Sakaigama

IPC: G09G5/10 ,  G09G3/36 ,  G09G5/02 ,  G09G5/18

CPC classification number: G09G5/10 ,  G09G3/3607 ,  G09G3/3648 ,  G09G5/02 ,  G09G2300/0452 ,  G09G2340/0457 ,  G09G2340/06 ,  G09G2360/16

Abstract: A display device includes a signal processing unit that receives input signals, and calculates output signals to a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel. The signal processing unit calculates a frequency of pixels belonging to each of a plurality of partitions using a light quantity of a surface light source. The signal processing unit calculates an index value for each of the partitions by at least multiplying the cumulative frequency being obtained by sequentially adding the frequency of pixels from a partition having the maximum light quantity among the partitions, and the number of partitions representing a position of a partition to which the cumulative frequency belongs counted from the partition having the maximum light quantity. The signal processing unit controls luminance of the surface light source based on a partition in which the index value exceeds a threshold.

Abstract translation: 显示装置包括信号处理单元，其接收输入信号，并计算到第一子像素，第二子像素，第三子像素和第四子像素的输出信号。 信号处理单元使用面光源的光量来计算属于多个分区中的每一个的像素的频率。 所述信号处理单元通过以下方式来计算每个所述分区的索引值：至少乘以通过从所述分区之中具有最大光量的分区依次添加所述像素的频率而获得的累积频率， 从具有最大光量的分区计数累积频率所属的分区。 信号处理单元基于指标值超过阈值的分区来控制表面光源的亮度。