JPH076703A - Display - Google Patents

Abstract

PURPOSE:To provide a display with the structure of an optimum pixel array for both brightness and resolution of an image displayed. CONSTITUTION:The structure of a pixel array for a display is made by repeatedly arraying red(R), green(G) and blue(B) phosphor pixels (dots) together in their respective lateral directions, for instance, in units of R-G-B-R-G to make a first row, then for a second row similarly arraying repeatedly together, for instance, the units each with dislocation of the one dot from its original position in each first low unit, and for third and subsequent rows also similarly arraying repeatedly together the units each with dislocation of each different dot from its position in each immediately preceding row unit. Also the structure of a striped pixel array for the display is made by repeatedly arraying together, for instance, units each composed of the respective stripes of R-G-B-R-G in their respective lateral directions. Thus more importance can be placed on the resolution of the green and red dots than that of the blue one so that the display can be provided with the structure of an optimum pixel array for both brightness and resolution of an image displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for a television or a computer terminal.

[0002]

2. Description of the Related Art FIGS. 5 to 7 show a pixel arrangement structure of a screen in a conventional display device for a television or a computer terminal.

First, the example shown in FIG. 5 is a conventional dot-shaped pixel array, and in order to increase the brightness of the screen, R
The dot-shaped phosphor pixels of three colors of (red), B (blue), and G (green) are R and B, one for each, and only two G for which human eyes have high visibility. 1 unit. This example has a structure that emphasizes the brightness (luminance) of the screen, and is particularly adopted for liquid crystal (LPG) or plasma (PDP).

The example shown in FIG. 6 is another example of the conventional dot-shaped pixel array which is also composed of three colors of R, B and G.
In this example, each row in the horizontal direction has a repeating arrangement of units B-G-R, and for example, the R in the second column is located between B-G in the first column, so that The dot arrangement of the whole is set so that R in the second row forms an equilateral triangle, and is called a delta type. This example is used for a screen of a picture tube for general televisions or displays.

The example shown in FIG. 7 is a general structure of a conventional stripe-shaped pixel array in which B-G-R units are repeated. This example is also used for a screen of a picture tube for general televisions or displays.

Further, conventionally, for example, Japanese Patent Laid-Open No. 61-15
As shown in Japanese Patent No. 8651, Japanese Patent Application Laid-Open No. 2-100240, and the like, there are known phosphor pixel intervals.

[0007]

Among the conventional pixel arrays, one having a total of four pixels, one for each R and B and two for G, as shown in FIG. Is advantageous in terms of brightness and resolution because there are two G having high human visibility. However, in the case of this pixel array structure,
It is certainly excellent in terms of brightness (brightness), but due to the low resolution of red, the following problems occur on a large screen. In other words, there is no problem in a bright place when a general image is projected on the screen, but for example, on a screen with a lot of redness such as when a human face is projected, the image may appear rough and rough. .

Although it has been known in the past to change the pixel spacing as described above, the above problems cannot be solved by such a method.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a pixel array structure of a display device which is optimum in terms of both brightness and resolution.

[0010]

A display device according to a first invention includes phosphor pixels of three colors of red, blue and green.
It is characterized in that a total of five units, one for red and two for green, and one for blue, are repeatedly arranged.

Further, in the display device according to the second aspect of the invention, phosphor pixels of three colors of red, blue and green are arrayed in the vertical or horizontal direction of the screen with blue on either side of green. It is characterized in that the arrangement is such that one red each and one green and red each on the other side.

[0012]

According to the display device of the first invention, one unit is one green (G) and one green (G) and one red (R).
Since each of the two has a two-color configuration, G with high visibility enhances the brightness of the image, and R improves resolution on a screen with a lot of redness. In addition, since B has a low luminosity factor, it may have a low resolution, and one in one unit is sufficient.

Further, according to the display device of the second invention, the arrangement of the screens in the vertical direction or the horizontal direction is such that there is one green (G) and one red (R) on either side of blue. Since one array of green (G) and one array of red (R) are repeated on the other side, the brightness of the image is increased by G, which has high visibility, and the screen is reddish by R. The resolution at will also improve.

[0014]

Embodiments Embodiments will be described below with reference to the drawings.

Example 1. FIG. 1 shows an embodiment applied to the case where each phosphor pixel has a dot shape. The figure is
Horizontal: An enlarged view of a horizontally long screen having a length of 4: 3 or 16: 9, and R, G and B correspond to red, green and blue dot-shaped phosphor pixels (dots), respectively. The size of these dots is φ140 μm, and the dimension between different-color dots is 400 μm, for example. In this example, the dots of each color are, for example, grid-shaped intersections of regular squares (but not necessarily regular squares). Here, the pixels of three colors have a total of five points, one for B and two for R and G. In addition, this pixel array has an R-G
-B-R-G has a structure that repeats as one unit. And the first row is such R-G-B-R-
By repeating the G unit, the second row has one dot shifted from the first row, and R-GB-
RG starts, the third row has one dot shifted from the second row, and R-G-B-R-G starts from under G in the second row.
Hereinafter, the structure is similarly repeated.

In this way, by adopting a structure in which the resolutions of G and R are more important than those of B, optimization can be realized in terms of both brightness and resolution. Further, it is more preferable that the single colors of G and R are randomly arranged.

In this embodiment, the pixel array is RG-.
It was constructed by repeating the units of B-R-G, but this sequence has the following structures: R-G-B-G-R, G-R-B-R-
It is also possible to have a structure in which either G or G-R-B-G-R units are repeated.

In this embodiment, the dots in the second row are arranged in a regular quadrangle directly below the dots in the first row, but the second row has two dots in the first row. It goes without saying that it may be a delta type array located exactly in the middle of the dots.

Example 2. FIG. 2 also shows another embodiment applied to the case where each phosphor pixel is dot-shaped. The figure is also an enlarged view of a horizontally long screen whose width: height is 4: 3 or 16: 9, and R, G and B are
Red, green, and blue dot-shaped phosphor pixels (dots)
Corresponding to. The size of these dots is φ140 μm,
The dimension between dots of different colors is 400 μm, for example. In this example, the dots of each color are, for example, grid-shaped intersections of regular squares (but not necessarily regular squares). Here, as for the three-color pixels, there are still five points in total, one point for B and two points for R and G. Further, this pixel array also has a structure in which R-G-B-R-G is repeated as one unit in the horizontal direction. In the case of this embodiment, the first row is a repetition of such an R-G-B-R-G unit, and the second row has two dots shifted from the first row, and the first row has the dots. R-G-B-R-G begins under B,
The third row has two dots shifted from the second row, and R-G-B-R-G starts from the bottom of B in the second column, and so on.

Also in this embodiment, the resolutions of G and R are set to B.
By adopting a structure that emphasizes more than that, optimization can be realized in terms of both brightness and resolution. Further, it is more preferable that the single colors of G and R are randomly arranged.

It should be noted that the pixel arrangement is not limited to repeating the units R-G-B-R-G, but also R-G-B-G-R and G-R.
It is also possible to have a structure in which any unit of -B-R-G or G-R-B-G-R is repeated.

Also in this embodiment, in addition to the regular square array in which each dot in the second row is directly below the dots in the first row, the pixel array in the second row is composed of two dots in the first row. It goes without saying that it may be a delta type array located exactly in the middle.

Example 3. FIG. 3 shows an embodiment applied to the case where the phosphor pixels have a stripe shape. In the figure, R,
G and B correspond to red, green and blue striped phosphor pixels (stripe), respectively. This pixel array is
It has a structure in which a unit composed of R-G-B-R-G is repeated in the horizontal direction. The width of each stripe is 7
0 μm, unit repeat pitch is 500 μm
m.

Also in the case of this embodiment, the resolutions of G and R are set to B.
The structure emphasizes more than that, and optimization can be realized in terms of both brightness and resolution. Further, as compared with the dot structure shown in FIG. 1, for example, the stripe structure generally tends to provide a better image, although the actual color pitch also varies and the vertical resolution also differs.

In addition to the R-G-B-R-G, the pixel array is also R-G-B-G-R, G-R-B-R-G or G-R-B-G-R. It is also possible to adopt a structure in which any one of the above units is repeated.

Example 4. FIG. 4 shows another embodiment applied to a dot structure. In the figure, R, G and B
Corresponds to red, green, and blue dot-shaped phosphor pixels (dots). This pixel arrangement is R-G-B-R-G.
In the structure in which the unit composed of 1 is repeated in the horizontal direction, the same arrangement is provided for the first row and the second and subsequent rows. Also in the case of this embodiment, optimization can be realized in terms of both brightness and resolution as in the embodiment of the stripe structure of FIG. Also in this case, the pixel array is not RGB-RG-RG-GB
-G-R, G-R-B-R-G or G-R-B-G
It is possible to have a structure in which any unit of -R is repeated.

[0027]

As described above, the display device according to the present invention can obtain the optimal pixel array structure in terms of both brightness and resolution by giving priority to the resolution of green and red over blue.

[Brief description of drawings]

FIG. 1 is a dot array diagram showing a first embodiment of the present invention.

FIG. 2 is a dot array diagram showing a second embodiment of the present invention.

FIG. 3 is a stripe array diagram showing a third embodiment of the present invention.

FIG. 4 is a dot array diagram showing a fourth embodiment of the present invention.

FIG. 5: Conventional dot array diagram

FIG. 6 is another conventional dot array diagram.

FIG. 7: Conventional stripe array diagram

Claims (2)

[Claims] 1. Phosphor pixels of three colors, red, blue and green,
A display device characterized in that a total of five units, one for red and one for green, and one for blue, are repeatedly arranged. 2. Red, blue and green phosphor pixels of three colors
The vertical or horizontal arrangement of the screen is blue, with one green and one red on one side and one green and one red on the other side.
A display device, characterized in that the display device is configured so as to repeat an array of individual pieces.