JPS62136620A - Liquid crystal display element - Google Patents

Abstract

PURPOSE:To adjust the background color of a liquid crystal display element to optimum color tone by providing separately a striped color filter for controlling the background color. CONSTITUTION:Transparent electrodes 3 are arranged on a lower glass substrate 2 and striped color filter layers 4R and 4G of, for example, red and green for displaying color display colors are formed on the transparent electrodes 3 alternately. Further, a striped color filter layer 5 for controlling the background color of the liquid crystal display element 1 is arranged, for example, between the color filters 4R and 4G in addition to the color filters 4R and 4G formed on the transparent electrodes 3. The color filters 5 is irrelevant to illuminating segments, so it is formed except on the transparent electrodes 3. An optional color is applied to the color filter 5 so that the background color of the liquid crystal display element 1 is determined by the combination of the 4R and 4G generating a color for illumination. Thus, the background color is controlled to optimum color tone.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a color liquid crystal display device, and particularly to a color liquid crystal display device.

The present invention relates to a color liquid crystal display device that displays da colors using striped color filters.

[Conventional technology]

As a color liquid crystal display element that can display multiple colors in 14 colors.

Conventionally, as described in Japanese Unexamined Patent Publication No. 59-222877, a plurality of types of striped color filter layers differing in one of the required colors are formed on a transparent rt electrode formed in a +flr tooth shape, and thereby There are known devices that perform display.

[Problem that the invention seeks to solve]

In the conventional example described above, although it is possible to display multiple colors, no particular consideration is given to the colors in the R-view portion of the entire display element, and therefore, a high-quality color display cannot necessarily be obtained. It wasn't something.

An object of the present invention is to provide a liquid crystal display element in which the background color of the liquid crystal display element also has an optimum color tone when color display is performed by providing a striped color filter layer on the transparent electrode of the liquid crystal display element. be.

[Means for solving problems]

A color liquid crystal display element that displays multiple colors by providing a transparent color filter layer with a small number of color filter layers.

In addition to the vividness of the color of the lit character shapes, the display quality is affected by the background color of areas other than the lit character shapes.
Written. In the present invention, a color liquid crystal display element capable of displaying a sub-quality image is realized as an element configuration in which the color tone of this background can be arbitrarily controlled. A color filter is provided separately.

[Effect]

The above-mentioned separately provided striped color filter controls the background color independently of the color of the portion controlled in one display.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 3 is a diagram showing the display contents of the liquid crystal display element 1, and this embodiment is applied to a speedometer of a car. These segment parts are respectively a, J c, d, and e.

f, g segments.

Figure 4: Numerical part 'c of rxssJ shown in Figure 3 above
It is a schematic diagram of a 7 segment part showing the figure "8".

In the present invention, since multi-color display is performed, -? ! The r-segment part has a one-sided polarization structure on one surface of the r section, and a color filter layer for displaying color is colored on the comb-like polarization. Transparent Wt on the upper plate side indicated by a broken line in Fig. 4
The poles 7 define the shape of a seven segment display pattern and are commonly connected outside the effective display area 12. on the other hand,
The comb-like patterns of the segments a, b, C2d, e, and flg shown by solid lines are the transparent electrodes 3 on the lower plate side, and are pulled out of the effective display area 12 in pairs from each segment. There is.

FIG. 1 is a schematic diagram showing the cross-sectional structure of the liquid crystal display element 1 shown in FIG. 5g4. A transparent electrode 3 is arranged on the lower glass substrate 2, and on the transparent electrode 3, striped color filter layers 4 and 4G of red and green colors, for example, are alternately formed to produce color display colors. There is. moreover,
In addition to the color filters 4 and 4G formed on the transparent pole 3, a striped color filter layer 5 for controlling the background color of the liquid crystal display element 1 is provided, for example, on the color filters 4R and 4G. Placed between. Since the color filter 5 is not involved in the lighting segment, it is formed in an area other than the transparent electrode 3. The color of the color filter 5 is a combination of the color filter 4 and 4G that produce the color for lighting.

An arbitrary color is applied so that the background color of the liquid crystal display element 1 is determined. In this embodiment, since the lighting colors are red and green, the color of the color filter 5 that fixes the background color must be changed! Shown as color. In this case, the combination results in a background color that is almost white.

On the other hand, a transparent electrode 7 is disposed on the upper glass substrate 6 facing the lower glass substrate 2 of MiJ. The transparent electrode 7 has the shape of a lighting segment shown in FIG. 4 bottles of the color filter.

4G and 5 and on the transparent electrode 7, alignment control films 8 for aligning liquid crystal molecules in a certain direction are formed, and a liquid crystal material 9 is sealed between them. Further, on the outside of the lower glass substrate 2, there is a lower plate side original plate lO,
Upper polarizing plates 11 are pasted on the outer sides of the upper glass substrates 6, respectively.

When a rectangular wave voltage is applied to each of the transparent single poles 3 and 7,
The liquid crystal 9 between the overlapping magnetic poles operates,
Each color of 4G is visible through 4 color filters. −
However, the liquid crystals 9 other than those mentioned above appear in a non-operating state with a background color other than the one lit character shape.

A schematic diagram of the configuration of the present invention viewed from the liquid crystal display side is shown in the second figure.
As shown in the figure. This figure is a partially enlarged view of the g segment shown in Fig. 4, and the broken part shows the transparent electrode 3 on the f plate side. The one colored with is 3gG. Also, the comb-like shape! A blue filter layer 5 is formed between the poles 3g and 3gG.

Since the aforementioned red filter layer 3, green filter layer 3G, and blue filter layer 5 are formed on the entire surface of the liquid crystal display element 1 shown in FIG. 3, the mixed color synthesized from these filter colors becomes the background of the liquid crystal display element 1. Becomes a color.

In this embodiment, as described above, the transparent r!
Moreover, since a color filter layer can be formed to determine the background color, the color tone of the background can be freely expressed according to the customer's needs.

Note that the color filter layer 5 for determining the background color described above does not have to be placed between the red filter layer 4 and the green filter layer 4G. A color filter layer 5 may also be provided.

〔Effect of the invention〕

According to the present invention, it is possible to arbitrarily change the background color of a liquid crystal display element according to customer needs, display high quality images, and realize a color liquid crystal display element with excellent visibility.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing one embodiment of the liquid crystal display element according to the present invention, Fig. 2 is an explanatory view of the liquid crystal display element as seen from the front, Fig. 3 is an explanatory view of each part of the display, and Fig. 4 is an illustration of the electrode structure. It is an explanatory diagram. l...Liquid crystal display element, 2...Lower glass substrate, 3.
...Comb-shaped transparent quasi-pole, 4 ru...Red color filter layer. 4. Green color filter layer, 5. Color filter t4.6. Upper glass substrate, 7. Transparent electrode. 8°=′! ``e direction 1'''' film・9°°°LCD・
) Agent: Patent Attorney Katsuo Ogawa
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Claims (1)

[Claims] 1. In a liquid crystal display device using a plurality of striped color filters of different colors arranged repeatedly and alternately in a predetermined order, display by control electrodes is performed between adjacent striped color filters. A liquid crystal display element characterized in that a striped color filter of a color different from any of these color filters is separately provided in an area that is not controlled, and the background color is controlled by the color of this color filter.