KR19990008643A - Pixel formation method of display device - Google Patents

Abstract

PURPOSE: The present invention relates to a method of forming a pixel, which is a basic display unit of a display device, and improves visibility of character information represented in an oblique direction along with character visibility in horizontal and vertical directions.

Composition: The area where the outer edge of the pixel 10 formed by being surrounded by a black matrix or a barrier is formed in a 2 (integer + 2) square so as to coincide with the diagonal line portion of the character so as to match the character displayed in the diagonal direction. Let this be enlarged.

Effect: Character information displayed in the diagonal direction of more than 50% in the range of 30 to 60 degrees can be clearly and clearly expressed on the entire screen of the display apparatus.

Description

Pixel formation method of display device

The present invention relates to a method of forming a pixel of a display device, and in particular, by making the outer edge of the pixel coincide with the straight portion of the character processed as a straight line on the screen, the visibility of the character information in which at least 50% of the total is diagonally formed. The present invention relates to a method of forming a pixel which is improved and made to be suitably used for a multi-media display device.

Representative display devices known to date include a color display tube, a liquid crystal display (LCD), a ferroelectric liquid crystal display (FLCD), a thin film transister (TFT) -LCD, and a plasma display panel (PDP). .

Such display devices cause pixels, which are the basic units of the screen, to emit light, thereby displaying characters or icons by the combination of the pixels.

For example, in a color-brown tube, black matrices and R, G, and B phosphors are formed on the inner surface of the panel, and the phosphors are excited by the collision with the electron beam. In this case, the phosphor whose edge shape is determined by the black matrix, that is, the pixels are arranged in the stripe type 2 and the dot type 4 as shown in Figs. 3A and 3B.

On the other hand, LCDs, FLCDs, and TFT-LCDs consist of a matrix of pixels arranged in a vertical row and a horizontal column, so that when arbitrary pixels are turned on by selection of a specific line, the molecular arrangement of the liquid crystal is changed by an electric field and becomes transparent. As the light of the backlight is transmitted, predetermined characters and icons are displayed. At this time, the display of the color is realized by allowing the light to pass through the color filter. Here, the color filter portion, i.e., the pixel, which is shaped by the black matrix, is formed of the grill type 6 and the racktangular type 8 shown in Figs. 3C and 3D.

In addition, the PDP consists of a matrix of pixels arranged in a vertical row and a horizontal column, so that phosphors of R, G, and B emit light by using a gas discharge generated when a voltage is applied. In this case, the shape of the pixel surrounded by the barrier is formed of the rack tangular type 8 shown in FIG. 3D.

In the display device described in the prior art, the pixels of the stripe, dot, grill, and rack tangular type have a problem of poor visibility in displaying character information.

More specifically, in recent years, display devices have been accelerating digitalization in the home appliance and computer sectors, and are required to have better display capability of text information.

Digitized characters are usually expressed as a mixture of straight and curved parts, but when subdivided on the screen, they are all treated as straight lines. Therefore, the visibility of the character may be determined depending on how many portions are formed in the same linear portion of the character to be displayed on the screen and the shape of the pixel.

However, while the pixels of the stripe, dot, grill, and racktangular types have excellent visibility in the vertical direction and the horizontal direction, since there is almost no area of the straight portion that matches the character expressed in the diagonal direction, the diagonal visibility of the character is There is this bad issue.

Considering that statistically, 50% or more of the characters are displayed in the oblique direction, it can be seen that the pixels of the prior art have very poor visibility of the character information.

In order to solve the problems of the prior art described above, the present invention is to improve the visibility of the characters represented in the diagonal direction with the character visibility in the horizontal and vertical direction.

To this end, the present invention is such that the outer edge of the pixel formed by being surrounded by a black matrix or a barrier is formed in a 2 (integer + 2) square so as to coincide with the diagonal line portion of the character, the visibility of the character information displayed in the diagonal direction A method of forming a pixel suitable for a multimedia display device is proposed.

1A is a diagram showing characters represented by pixels according to the present invention;

1B is a diagram showing characters represented by pixels of a conventional dot type;

Figure 1c is a view showing a character represented by a pixel of the conventional rack-tangular type,

2 is a view showing an arrangement state of pixels according to the present invention;

3A is a diagram illustrating a pixel array of a conventional dot type;

3B is a view showing a pixel array of a conventional stripe type;

3c is a diagram illustrating a conventional grill type pixel array;

3D is a diagram illustrating a pixel array of a conventional racktangular type;

Explanation of symbols on the main parts of the drawings

10,12-pixel

BEST MODE Hereinafter, preferred embodiments for realizing the present invention will be described in detail with reference to the accompanying drawings.

1A illustrates a pixel that is a basic unit of the display device according to the present invention.

The pixel 10 of the present invention is formed in 2 (integer + 2) squares so that the outer edge shape formed by the black matrix or the barrier coincides with the diagonal direction of the character.

The pixel 10 of the present invention, which is formed in at least a hexagon and is increased by a multiple of two (8, 10, 12, ...), has a screen in which a straight line portion of an outer edge coincides with a diagonal direction of a character in a large part. Character information processed in a straight line on the line is continued by an extension line of the straight line display portion of the pixels 10 to be more clearly represented.

That is, the letter 'A' of the present invention represented by the combination of the pixels 10 extends in a diagonal direction, unlike the dot type 40 shown in FIG. 1B and the racktangular type 80 shown in FIG. 1C. The visibility is improved by the straight portions of the pixels 10.

For this reason, the visibility of the character information displayed in the diagonal direction is in the order of 2 (integer + 2) square pixel 10> dot type 40> rack tangular type 80, stripe type, and grill type of the present invention. do.

However, in the case of the present invention, the visibility of the characters in the vertical direction is somewhat inferior to the grill type or the rack tangular type 80 and the stripe type. Also, the visibility of the horizontal characters is somewhat inferior to the racktangular type 80.

However, considering that 50% or more of the character information is displayed in the diagonal direction in the range of 30 to 60 degrees, the pixel 10 of the present invention can obtain improved character visibility than the pixels of the prior art in the entire screen.

On the other hand, the pixel 10 of the present invention preferably forms a ratio of the length in the horizontal and vertical direction of 8 × 12 for the display of English characters. In addition, it is preferable to form the horizontal and vertical length ratios of 12 × 24 for displaying Korean characters, and the horizontal and vertical length ratios of 24 × 24 for displaying Chinese characters.

These results are data calculated by the applicant through a number of experiments in consideration of the characteristics of each character, it was found that the visibility of each character at the above ratio is the best.

On the other hand, the pixels 12 of the present invention are arranged in an arrangement well shown in Fig. 2 for displaying colors. Here, each pixel of R, Ｇ, and 들은 is sequentially repeated to form one column, and the R, Ｇ, and Ｂ are arranged alternately with other adjacent columns, so that the arrangement of R, Ｇ, and 간의 between two adjacent columns is triangular. ) In the form of

As can be seen through the configuration and operation described above, the pixel forming method of the display device according to the present invention substantially solves the problems of the prior art.

That is, according to the present invention, it is possible to obtain the effect of improving the character visibility on the entire screen including the horizontal and vertical directions while improving the visibility of the characters represented in the diagonal direction.

Therefore, the display device according to the present invention can more clearly and clearly express text information that is becoming digitalized in the age of multimedia and information, and can be most suitably used in the multimedia age.

On the other hand, the present invention is not limited to the above-described specific preferred invention, any person having ordinary skill in the art to which the invention belongs without departing from the gist of the invention claimed in the claims. It will be possible.

Claims (5)

In the method of forming a pixel which is the smallest display unit of a display device, a pixel in which the edge shape of the light emitting area is determined by a black matrix or a barrier formed on a substrate is formed in a 2 (integer + 2) square, and the outer straight line of the pixel is formed. And the diagonal direction display portions of the characters processed in a straight line on the screen and the screen coincide in the same direction, thereby improving the visibility of the characters. The method of claim 1, wherein the pixel has a length ratio of 8 × 12 in a horizontal and vertical direction for displaying English characters. The method of claim 1, wherein the pixel has a length ratio of 12 × 24 in a horizontal and vertical direction for displaying Korean characters. The method of claim 1, wherein the pixel has a length ratio of 24 × 24 in a horizontal and vertical direction for displaying Chinese characters. 2. The pixel of claim 1, wherein the pixels are formed in one row by repeating the order of R, Ｇ, Ｂ, and the R, Ｂ, Ｂ are arranged alternately with other adjacent columns, and the arrangement of R, Ｇ, Ｂ between two columns The pixel forming method of the display device, characterized in that the triangular.