Active matrix display devices

Abstract

Active matrix display devices capable of improving aperture ratio of pixels and of smoothing intermediate colors are presented. An active matrix display device has static random access memory (SRAM) devices and digital to analog converters (DAC), which are both allocated to each of sub-pixels of a divided pixel. The SRAM stores an input digital data with over two bits, which can be used as gray level information for gray scale display by the respective sub-pixels. The input digital data is converted into analog data for display by the DAC. Gray scale display by the sub-pixels can be performedbased on gray scales determined by the analog data for display. The pixel can be used to display multiple gray scales according to combinations of areas and gray scales of the sub-pixels.

Description

technical field [0001] The present invention relates to an active matrix display device, in which each pixel arranged in a matrix is ​​divided into a plurality of sub-pixels, and particularly relates to a display device which can increase the aperture ratio of the pixel and display smooth intermediate colors. Background technique [0002] In a known active matrix liquid crystal display device, a plurality of pixels are arranged in a matrix. In this known liquid crystal display device, one pixel is divided into a plurality of sub-pixels, and multi-gray-scale gray-scale display is performed by combining the areas of each sub-pixel (see, for example, Patent Document 1). [0003] [Patent Document 1] Japanese Unexamined Patent Publication No. 2005-300579 (pp. 2-9, Figure 5-1 3) [0004] Figure 7 A schematic diagram showing an example of the shape and configuration of a known sub-pixel 3P. For example, if Figure 7 As shown, in the known liquid crystal display device, one pi...

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Problems solved by technology

In other words, an optically ineffective area is formed between each sub-pixel 3P

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