JPH0693065B2 - Pixel arrangement structure in color liquid crystal display module - Google Patents

Description

The present invention relates to a pixel array structure in a color liquid crystal display module, and more particularly to a color used in a liquid crystal color television for driving a thin film transistor (TFT) active matrix. The present invention relates to a picture element array structure of a filter.

(B) Conventional Technology FIG. 3 shows a delta arrangement structure of a typical conventional color filter used in a color liquid crystal display. With this delta arrangement, the three primary colors red, green, and blue are arranged in a delta shape, and full color can be displayed by the color mixture and gradation display of each pixel, and the three primary colors are arranged in a delta shape. Can form a natural screen.

Generally, in a TFT active matrix drive color liquid crystal display, one of the picture elements is
Lighting the pixel by driving the TFT
Although it is selected to turn off the light, the number of picture elements in the horizontal direction of the screen is basically an integral multiple of the three primary colors of red, green, and blue. That is, as shown in FIG. 3, if the left end starts with blue, then the green and red are arranged in the horizontal direction, the picture element color at the right end ends in red, and the left end of the entire screen is blue. , The rightmost edge is red.

On the other hand, there is a brightness standard called Y visibility as a scale for expressing the brightness of transmitted light such as a picture element of a color filter.
FIG. 2 shows the Y luminosity of the three primary colors, red, green, and blue. The higher the Y luminosity, the brighter the human eye feels it, and the smaller the Y luminosity, the darker it feels. That is, among the three primary colors, green is the brightest and most noticeable, and conversely, blue is the least noticeable.

(C) Problems to be solved by the invention However, as described above, the horizontal pixel arrangement is blue, green,
In a color liquid crystal display module that uses a color filter configured with the number of picture elements in this order in the order of red, when the screen display is an intermediate display such as gray, the red picture element at the far right of the screen is No element exists, and Y
Since the visibility is high, the right side stands out as a row of red picture elements, and the screen display becomes unnatural.

Also, in the case of a color filter in which the horizontal pixel array is blue, red, and green, and the number of pixel elements is an integral multiple of this, the rightmost green Y has a high Y visibility, so it is treated as a green pixel array. May be noticeable. Further, when the horizontal pixel arrangement is in the order of red, blue, and green, the leftmost red and the rightmost green are also conspicuous.

The present invention relates to a TFT active matrix drive color liquid crystal display module of a natural display in which the color of the picture element on the outermost side of the screen is inconspicuous even when the screen display is a halftone display such as gray display in which 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 Problem The present invention is a picture in which picture elements corresponding to the three primary colors of red, green, and blue and corresponding coloring means are arranged in a straight line horizontally with the three primary colors as a constant cycle. In the picture element array structure in the color liquid crystal display module, in which the picture elements are arranged vertically parallel to each other and the three primary colors are adjacent to each other in a delta shape, and full color is displayed by the color mixture and gradation display of the picture elements, FIG. 3 is a picture element array structure in a color liquid crystal display module in which the color of the picture element at the leftmost end and the picture element at the rightmost end is set to blue among the picture elements in a row.

That is, in the present invention, the colors of the leftmost and rightmost picture elements of each picture element row are blue, which has the smallest Y luminosity factor, which is the standard of the brightness perceived by human eyes.

(E) Action The leftmost and rightmost picture elements of each picture element row consisting of the picture elements corresponding to the three primary colors of red, green, and blue and the corresponding coloring means are the three primary colors whose Y visibility is the standard of brightness. Since it is composed of blue, which is the smallest color, it is possible to prevent a coloring phenomenon in which only the outermost picture element row is conspicuous in the entire screen even in a halftone display such as a gray display in which display unevenness is most easily recognized.

(F) Embodiments The present invention will be described in detail based on the embodiments shown in the drawings.
The present invention is not limited to this.

FIG. 1 shows a pixel array of color filters in a TFT active matrix driving color liquid crystal display according to an embodiment of the present invention.

In FIG. 1, three primary colors red, green, and blue are arranged on the screen, and the three primary colors are arranged in a delta shape. That is, the screen is composed of the first picture element row 1a to the (m-1) th picture element row 1b and the m-th picture element row 1c. The picture elements forming each picture element row are arranged in a matrix and Correspondingly, color filters (coloring means) are arranged.
This color filter is made of a gelatin material and is provided on the outer surface or inner surface of the color filter substrate 2 constituting the color liquid crystal display module, or on or under the signal electrode, the scanning electrode, the pixel electrode or the common electrode. ing.

Then, in the color filter of the delta arrangement, each picture element row has a picture element at the leftmost end and a picture element at the rightmost end, for example, in the (m-1) th picture element row 1b, of the picture elements forming the picture element row. A color filter for blue is arranged in 3 and 4. This (m-1) th picture element row 1b is the leftmost picture element 3
Subsequent to this, picture elements 5 and 6 having color filters for green and red are sequentially arranged, and these three primary colors are periodically arranged in a straight line, and the rightmost end is a picture element 4 having a color filter for blue. Consists of.

Thus, in the delta-shaped pixel array in this embodiment,
The leftmost and rightmost sides of the entire screen are Y among the three primary colors
It is composed of a blue pixel array with the smallest visibility.

For example, in the conventional picture element array structure of the color filter shown in FIG. 3, in order to configure the rightmost side of the entire screen with a blue picture element row, the picture at the rightmost end of the first picture element row 11 in FIG. Element 7
Chromium is vapor-deposited on the color filter for red arranged in and the color filter for green arranged in the picture element 8 adjacent thereto, and the picture elements 7 and 8 are covered with a film of chromium. As a result, the rightmost end of the first picture element row 11 is replaced with the picture element 9 displaying blue instead of the picture element 7 displaying red.
Similarly, each rightmost end of the second picture element row and below is also replaced with a picture element displaying blue. Therefore, the left end and the right end of the entire screen are composed of the blue pixel array.

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

That is, the driver outputs the picture element through the TFT, whereby the rightmost end is displayed in blue, and a blue picture element column is formed by providing each picture element row.

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

(G) Effect of the Invention According to the present invention, in the pixel arrangement structure of the color liquid crystal display, by arranging the blue pixels on the leftmost and rightmost sides of the screen, the number of horizontal pixels in the horizontal direction is an integral multiple of the conventional three primary colors. When arranging, the outermost edge coloring phenomenon, which was a problem, is not noticeable even in the halftone display such as gray display where display unevenness is most recognizable. Is possible.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing an embodiment of the present invention, FIG. 2 is a Y luminosity characteristic diagram of three primary colors, and FIG. 3 is a structural explanatory view showing a conventional example. 1a, 1b, 1c …… Pixel row, 2 …… Color filter substrate, 3 …… Leftmost picture element, 4 …… Rightest picture element, 5,6 …… Picture element.

Claims (1)

[Claims] 1. A picture element row in which picture elements corresponding to the three primary colors of red, green and blue are arranged horizontally in a straight line with the above-mentioned three primary colors as a constant cycle, and the picture element rows are parallel to each other in the vertical direction and the three primary colors. Are arranged so that they are adjacent to each other in a delta shape, and in the pixel arrangement structure in a color liquid crystal display module that displays a full color screen by color mixing and gradation display of each pixel, in the pixel element of each pixel row, the leftmost end The pixel arrangement structure in the color liquid crystal display module in which the color of the picture element and the picture element at the rightmost end are set to blue.