JPH01195423A - Picture element arraying structure in color liquid crystal display module - Google Patents

Abstract

PURPOSE:To prevent a picture display from becoming unnatural by constituting the colors of the picture elements at the rightmost and leftmost ends of each picture element line of blue at which the Y-viewing sensitivity which is a reference of the brightness sensed by the eyes of human beings is the smallest. CONSTITUTION:The picture elements at the rightmost and leftmost ends of each picture element line 1a-1c, for example, the picture elements 3 and 4 of the picture element line 1b are provided with color filters for blue. In the picture element line 1b picture elements 5 and 6 respectively provided with color filters for green and red are succes sively arrayed following the leftmost picture element 3, with these three color primaries being arrayed periodically as the three color primaries in one cycle, and the rightmost picture element is the picture element 4 provided with a color filter for blue. In such delta-like picture element array, the rightmost and leftmost sides are constituted of blue picture element rows to which Y-viewing sensitivity is the smallest among the three color primaries. Therefore, the coloring phenomena at the outermost sides become inconspicuous at the outermost sides only even in an intermediate tone display of grey-colored display, etc., at which an uneven display is the most recognizable and a natural and excellent displaying grade can be obtained.

Description

Detailed Description of the Invention (a) Field of Industrial Application The present invention relates to a pixel arrangement structure in a color liquid crystal display module, and more specifically to a pixel arrangement structure in a color liquid crystal display module, and more specifically to a pixel arrangement structure in a color liquid crystal display module.
TF'T) This relates to the pixel arrangement structure of a color filter used in an active matrix driven liquid crystal color television.

(b) Prior Art FIG. 3 shows a delta arrangement structure of a typical conventional color filter used in a color liquid crystal display. This delta method arrangement is because the three primary colors red, green, and blue are arranged in a delta shape, and by color mixing and gradation display of each picture element, full color can be displayed, and the three primary colors are arranged in a delta shape. A natural screen can be formed.

Generally, in a TPT active matrix drive color liquid crystal display, one picture element is controlled by a driver IC.
The picture elements are turned on and off by driving the TPT provided in each one, but the number of picture elements in the horizontal direction of the screen is basically an integer of the three primary colors of red, green, and blue. Consists of double. In other words, as shown in Figure 3, if the left edge starts with blue, then green and then red are arranged horizontally, the rightmost pixel color will end with red, and the leftmost edge of the entire screen will be blue. , the rightmost end is red.

On the other hand, there is a brightness standard called Y visibility as a measure of the brightness of transmitted light such as a picture element of a color filter.

Figure 2 shows the Y visibility of the three primary colors red, green, and blue; the higher the Y visibility, the brighter it feels to the human eye, and the lower the Y visibility, the darker it feels. In other words, among the three primary colors, green is the brightest (easiest to stand out), while blue is the darkest and least noticeable.

(c) Problems to be solved by the invention However, as mentioned above, the horizontal pixel arrangement is blue, green,
In a color liquid crystal display using a color filter in which the number of picture elements is an integral multiple of this number in the order of red,
When the screen display is an intermediate display such as gray, the red pixel at the far right of the screen does not have any pixels to mix colors, so the Ym sensitivity is high, so the right side stands out as a row of red pixels, and the screen display becomes It looks unnatural.

In addition, in the case of a color filter in which the horizontal pixel arrangement is in the order of blue, red, and green, and the number of pixels is an integral multiple of this order, the rightmost green Y has high visual sensitivity, so it is used as a green pixel array. It may be noticeable. Furthermore, when the horizontal pixel arrangement is in the order of red, blue, and green, red at the leftmost end and green at the rightmost end are similarly conspicuous.

The present invention provides a TPT active matrix drive color liquid crystal display module that provides a natural display in which the color of the picture elements at the outermost edge of the screen is not noticeable, even when the screen display is a gray display or other halftone display where display unevenness is easily recognized. One of the purposes is to provide a pixel array structure of a color filter.

(d) Means for Solving the Problems The present invention provides a picture in which picture elements corresponding to the three primary colors of red, green, and blue and corresponding coloring means are arranged horizontally in a straight line with the three primary colors at a constant period. In the pixel arrangement structure of a color liquid crystal display module, which displays a full color screen by color mixing and gradation display of each pixel, the pixels are arranged vertically parallel to each other and the three primary colors are arranged adjacent to each other in a delta shape. This is a pixel arrangement structure in a color liquid crystal display module in which the color of the leftmost pixel and the rightmost pixel among the rows of pixels is set to blue.

That is, in the present invention, the color of the leftmost and rightmost picture elements of each picture element row is blue, which has the lowest Y visibility, which is a standard for brightness perceived by the human eye.

(e) Effect The leftmost and rightmost pixels of each pixel row, which consists of pixels corresponding to the three primary colors of red, green, and blue, and corresponding coloring means, have Y luminosity, which is a brightness standard, of the three primary colors. Since it is constructed using blue, which is the smallest color among them, it is possible to prevent a coloring phenomenon in which only the outermost pixel row stands out on the entire screen even in halftone display such as gray display where display unevenness is most easily recognized.

(f) Example The present invention will be described in detail below based on embodiments shown in the figures.

Note that this invention is not limited by this.

FIG. 1 shows a pixel arrangement of a color filter in a TPT active matrix driven color liquid crystal display according to an embodiment of the present invention.

In FIG. 1, the three primary colors red, green, and blue are arranged on the screen, and the three primary colors are arranged in a delta shape. In other words, the screen is from the first picture element row 1a to the (m-1)th picture element row!
It consists of b and m-th pixel row ICs, and the pixels constituting each pixel row are arranged in a matrix, and a color filter (coloring means) is arranged corresponding to each pixel. This color filter is made of gelatin material, and is provided on the outer or inner surface of the color filter substrate 2 constituting the color liquid crystal display module, or
It is provided above or below the signal electrode, scanning electrode, picture element electrode, or common electrode.

In the delta array color filter, each picture element row includes the leftmost picture element and the rightmost picture element among the picture elements constituting it, for example, in the (m-1)th picture element row tb, the picture element Color filters for blue are arranged at 3 and 4. This (m-1)th picture element row tb follows the leftmost picture element 3 (1) Picture elements 5.6 having color filters for green and red are arranged in sequence, and these three primary colors are used as one period. The picture elements 4 are arranged in a straight line, with the rightmost picture element 4 having a blue color filter.

In this way, in the delta-shaped pixel arrangement in this example,
The leftmost and rightmost sides of the screen as a whole are Y among the three primary colors.
It is composed of blue pixel rows with the lowest visibility.

For example, in the pixel arrangement structure of the conventional color filter shown in FIG. 3, in order to configure the rightmost side of the screen as a whole with blue pixel rows, in FIG. Chromium is deposited on the red color filter placed on the rightmost picture element 7 of the picture element row 11 and the green color filter placed on the adjacent picture element 8, so that the picture element 7 is covered with a chromium film. and 8 are coated.

As a result, at the rightmost end of the first picture element row 2, the picture element 7 that displays red is replaced by the picture element 9 that displays blue. Second
The rightmost portions of each picture element row and below are similarly replaced with picture elements that display blue. Therefore, the left end and the right end of the screen as a whole are composed of blue pixel rows.

Further, in FIG. 3, it is also possible to provide a picture element in which a blue color filter is arranged in the screen outside the picture element 7.

That is, the picture elements are driven by the driver output via the TPT, thereby displaying the rightmost part in blue, and providing each picture element row constitutes a blue picture element column.

In this way, in a TPT active matrix drive color liquid crystal display using a color filter, the leftmost and rightmost sides of the screen are blue pixel rows, and even in halftone displays such as gray displays where display unevenness is most easily recognized, It is possible to prevent unnatural coloring on the outermost side without making only the outermost picture element row stand out, and to obtain good display quality.

(G) Effects of the Invention According to this invention, in the pixel arrangement structure of a color liquid crystal display, by arranging blue pixels on the leftmost and rightmost sides of the screen, the number of horizontal pixels is an integral multiple of the conventional three primary colors. When arranging, the coloring phenomenon on the outermost side, which had been a problem, does not stand out only on the outermost side than in half-tone display such as gray display where display unevenness is most easily recognized, and a natural and good display quality can be obtained. becomes possible.

[Brief explanation of the drawing]

FIG. 1 is a configuration explanatory diagram showing one embodiment of the present invention, FIG. 2 is a diagram showing Y visibility characteristics of three primary colors, and FIG. 3 is a configuration explanatory diagram showing a conventional example. la, Ib, lc...Picture element row, 2...
Color filter substrate, 3...Picture element at the leftmost end, 4...Picture element at the rightmost end, 5.6...Picture element. Figure 1

Claims (1)

[Claims] 1. Picture elements and coloring means corresponding to the three primary colors of red, green, and blue are arranged horizontally in a straight line with the three primary colors at a constant period, and the rows of picture elements are vertically parallel to each other and the three primary colors are arranged in a delta shape. In the pixel arrangement structure of a color liquid crystal display module that displays full color on the screen by color mixing and gradation display of each pixel, the leftmost pixel among the pixels in each pixel row is and a pixel arrangement structure in a color liquid crystal display module in which the color of the rightmost pixel is set to blue.