JPS6289021A - Color liquid crystal display device - Google Patents

Abstract

PURPOSE:To improve the display quality because of the occurrence of step by step additive mixture even if a picture is seen at a closer range, by dividing a liquid crystal cell into plural cells which are connected electrically but are separated spatially. CONSTITUTION:The liquid crystal cell corresponding to each color filter is divided into three, and 9 divided cells constitute one picture element. Three cells out of them are connected electrically, and the color filter of the same color is provided correspondingly to them. That is, 3 liquid crystal cells 11R, 3 liquid crystal cells 11G, and 3 liquid crystal cells 11B are connected electrically respectively, and color filters of the same colors correspond to individual groups. Individual color liquid crystal cells are arranged in this manner to disperse individual colors in one picture element, and the display quality is improved because of color mixture in comparison with a conventional structure even if the picture is seen at closer range.

Description

[Detailed Description of the Invention] [Summary] The present invention aims to improve the display quality of a color liquid crystal display device, and achieves the purpose by preventing each color from appearing separated by utilizing the juxtaposition additive phenomenon. We are trying to

[Industrial Application Field] The present invention relates to a color liquid crystal display device with excellent display quality.

In a matrix color liquid crystal display device consisting of an X electrode and a Y electrode, a color filter is provided corresponding to each liquid crystal cell. There are a plurality of types of color filters, and color display is performed using a liquid crystal cell corresponding to each color filter as a shutter.

[Conventional technology]

The pixel configuration of this type of conventional simple matrix color liquid crystal display is shown in FIG. In the figure, 1 is the X@ pole and 2 is the Y electrode. Do the X electrodes 1 extend in the X direction and are equally spaced in the Y direction perpendicular to the X direction? , an iB tree is formed. Also, Y
A plurality of electrodes 2 extend in the Y direction, are formed at equal intervals in the X direction, and each intersects with the X electrode 1. A liquid crystal cell 3 is constructed at each intersection of the X and Y electrodes, and three liquid crystal cells 3 adjacent in the Y direction constitute one pixel.

The shaded area in the figure is an example of one pixel 4. A plurality of types (multiple colors) of color filters are provided corresponding to each of these liquid crystal cells 3, respectively. This figure shows a case where color filters of three colors, R (red), G (green), and B (blue) are provided, and these color filters are provided adjacent to each other in the Y direction for each pixel. .

R, G, B written in each liquid crystal cell in one pixel 4 shown in the figure
indicates that R, G, and B color filters are provided corresponding to the liquid crystal cells at respective positions.

[Problem that the invention seeks to solve]

However, such a conventional structure has a drawback in that the colors R, G, and B appear to be separated when the liquid crystal panel is placed close to the liquid crystal panel. In particular, when a color liquid crystal display device is used as a terminal for an information device such as a computer, the size of one pixel cannot be made very small, and in this case, the display is viewed closely, resulting in the above-mentioned drawback (each color is separated). (visible) becomes more pronounced. In addition, the above disadvantages can be alleviated by making the liquid crystal cells smaller and increasing the number of liquid crystal cells constituting one pixel, but in this case, the duty becomes smaller in a simple matrix, and the number of TPTs (thin film transistors) increases in an active matrix. This affects the yield and also shortens the address time for applying voltage to the liquid crystal cell.

c. Means for Solving the Problems] The present invention provides a color liquid crystal display device that can solve the above-mentioned problems.
As illustrated in FIG. 1, a configuration is adopted in which a liquid crystal cell corresponding to each color filter is divided into a plurality of spatially separated cells.

Each of the divided cells is electrically connected.

[Effect]

Since the liquid crystal cells are subdivided, it becomes difficult to identify individual liquid crystal cells, and display quality can be improved.

That is, by subdividing and dispersing each color cell, which has conventionally been spatially localized, juxtaposed additive color mixing occurs even when the cells are closer to the screen, improving display quality.

〔Example〕

The present invention will now be described in detail with reference to FIGS. 1 to 4.

A first embodiment is shown in FIG.

In this example, the present invention is applied to an active matrix color liquid crystal display device, and FIG. 1 shows the main structure for one pixel. As is clear from this figure, the liquid crystal cell corresponding to each color filter is divided into three, and each of the nine subdivided cells constitutes one pixel. Three of them are electrically connected, and color filters of the same color are provided correspondingly. That is, three liquid crystal cells IIR and three liquid crystal cells 11. and three liquid crystal cells 11. are electrically connected to each other, and color filters of the same color correspond to cells in each group. The symbols RlG and B attached to each cell indicate that the corresponding color filters are R, G, and B colors, respectively.

12 is a gate pass line, 13 is a drain pass line,
14+l, 14a, and 14m are TPTs for driving liquid crystal cells of each color. In this way, only one TFT is provided for each of R, G, and B, and external driving can be done in exactly the same way as in the conventional structure.

By arranging the liquid crystal cells of each color in this way, each color is dispersed within one pixel, and compared to the conventional structure, colors are mixed even when viewed from a closer distance, improving display quality.

FIG. 2 shows a second embodiment.

In this example, the present invention is applied to a simple matrix color liquid crystal display device, and FIG. 2 shows the main structure for one pixel. In this case, the division and connection procedures for each cell are the same as in the previous example, and the R, G, and
The symbol H indicates the color of the corresponding color filter.

21R, 21°, 21t are divided liquid crystal cells of each color,
22 is a scan electrode, and 23 is a data electrode.

In the case of this example as well, the same effect as the previous example can be obtained.

FIG. 3 shows a third embodiment.

In this example, the present invention is applied to an active matrix color liquid crystal display device, in which 31*, 31c, and 31B are divided liquid crystal cells of each color, 32 is a gate pass line, and 3
3 is drain has line, 34, R, 34c, 34s
are TPTs for driving liquid crystal cells of each color.

This example is an application example of the first example, and the arrangement of each divided cell is the same for C, R, and B (however, B
The difference from the first embodiment is that only the left and right sides are swapped. The effect is similar to that of the first embodiment.

FIG. 4 shows a fourth embodiment.

In this example, the present invention is applied to a simple matrix color liquid crystal display device, 41R and 41G.

418 is a divided liquid crystal cell for each color, 42 is a scan electrode, and 43 is a data electrode.

In this example, the electrodes in the second and third rows from the top of the figure are moved in the direction of the figure by a predetermined amount (1/2 of the cell arrangement pitch in the Y direction).
) is the same as the second embodiment except that they are arranged sequentially shifted by .

In each of the above-mentioned embodiments, an example was described in which the liquid crystal cell of each color is divided into three, but the number of divisions may be two or four or more.

〔Effect of the invention〕

As described above, according to the present invention, by subdividing and dispersing each color cell, which was previously spatially localized,
The juxtaposition additive phenomenon occurs even when the screen is closer to the screen, and the display quality can be improved.

Furthermore, manufacturing is easy because there is no need to change the control or drive system.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the main part configuration of an active matrix color liquid crystal display device according to the first embodiment of the present invention. FIG. 2 is a diagram explaining the main part composition of a simple matrix color liquid crystal display device according to the second embodiment of the present invention. , FIG. 3 is an explanatory diagram of the main part structure of an active matrix color liquid crystal display device according to a third embodiment of the present invention, and FIG. 4 is a main part structure of a simple matrix color liquid crystal display device according to a fourth embodiment of the present invention. An explanatory diagram, FIG. 5 is an explanatory diagram of the main part configuration of a conventional color liquid crystal display device, and in the diagram, 11+t, llc, IIB, 21R, 21
G, 2II+, 31R, 31c, 318. 4
1R, 41G, 41B are liquid crystal cells, 12.32 are gate pass lines, 13.33 are drain pass lines, 14R, 14G, 1411.34N, 34c, 348 are TPTs for driving liquid crystal cells, 22.42 are scan electrodes, 23 .43 is a data electrode.

Claims (1)

[Claims] A matrix color liquid crystal display device consisting of an X electrode and a Y electrode, in which a color filter corresponding to each liquid crystal cell is provided, a plurality of types of color filters are provided, and a color filter corresponding to each color filter is provided. A color liquid crystal display device that performs color display using a liquid crystal cell as a shutter, characterized in that the liquid crystal cell is divided into a plurality of electrically connected and spatially separated cells.