JP2954714B2 - Liquid crystal display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

 [Object of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large-sized liquid crystal display device in which the display surfaces of a plurality of liquid crystal displays are arranged in a dense system in a plane to constitute one screen.

[0002]

2. Description of the Related Art FIG. 3 is a schematic view showing the structure of a large-sized liquid crystal display device of this kind. In FIG. 3, two substrates 1,
2. A plurality of liquid crystal displays 3 formed by combining the two are arranged,
These are illuminated from behind by a backlight 4. In order to prevent the light of the backlight 4 from leaking from the gap between the arranged liquid crystal panels 3, a light shielding plate 5 is provided in this portion.

When a plurality of liquid crystal displays 3 are arranged,
As shown in FIG. 4, a configuration is adopted in which the pitch a of the display pattern between the liquid crystal display 3 and the adjacent liquid crystal display 3 is made equal to eliminate the sense of incongruity that occurs when a large number of liquid crystal displays 3 are arranged. I have. In FIG. 2, the hatched portions represent the lighting patterns 6.

As a result of adopting such a structure, as shown in the sectional view of FIG. 5A and the plan view of FIG. 5B, the light shielding plate 5 Is limited by the distance between the lighting patterns 6.

[0005]

As described above, the light shielding plate 5
Only a small width is used, and the liquid crystal display 3
In contrast, light incident from a vertical direction can be shielded, but light incident from an oblique direction cannot be shielded. For this reason, the light incident from the oblique direction enters the sealing portion of the liquid crystal display 3 and becomes scattered light, and the light is illuminated between the adjacent liquid crystal displays 3 and becomes very unsightly.

As described above, in the prior art, it is not possible to shield the light incident from an oblique direction with the light shielding plate 5, and this light is scattered into the seal portion, making it difficult to view the display. Was the cause. The present invention has been made in view of such conventional circumstances. [Configuration of the Invention]

[0007]

SUMMARY OF THE INVENTION The present invention relates to a liquid crystal display device in which one screen is formed by arranging the display surfaces of a plurality of liquid crystal displays in which two substrates are combined with a sealant. The sealant of the liquid crystal display is transparent and the refractive index m satisfies the relationship of 0.9 n ≦ m ≦ 1.1 n with the refractive index n of the substrate of the liquid crystal display.

[0008]

According to the present invention, when light enters the liquid crystal display not obliquely but vertically, the light is not scattered because the sealant is transparent. Further, since the refractive index of the sealant is substantially the same as the refractive index of the substrate constituting the liquid crystal display, light travels without refraction between the sealant and the substrate. As a result, even when light enters the liquid crystal display from an oblique direction, display can be performed without shining between adjacent liquid crystal displays.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic diagram showing an embodiment of the present invention. In FIG. 1, liquid crystal displays 10 a to 10 d use two substrates 11 and 12 made of, for example, glass for sealing agent 1.
3 and the liquid crystal 14 is sandwiched in this gap. Here, the sealant 13 is made of a transparent material, and its refractive index m is 1.5, which is almost the same as the refractive index n of the substrates 11 and 12. The display surfaces of the liquid crystal displays 10a to 10d are arranged in a plane to form one screen. In addition, the liquid crystal display 1
Lights from backlights 15a to 15e are illuminated from behind 0a to 10d.
A light shielding plate 16 is provided between d.

In this embodiment, the backlight 15a
Light emitted from the backlight 15b is shielded by a light shielding plate 16 between the liquid crystal displays 10a and 10b.
Is not blocked by the light blocking plate 16. However, in this embodiment, since the sealant 13 is transparent and its refractive index m satisfies the relationship of 0.9 n ≦ m ≦ 1.1 n with respect to the refractive index n of the substrates 11 and 12, FIG.
As shown in (a), light is not scattered by the sealant 13 of the liquid crystal displays 10a and 10b, and the liquid crystal displays 10a and 1b are not scattered.
It will not glow between 0b. On the other hand, when the sealant 13 made of a normal material is used, as shown in FIG. 2B, light is scattered by the sealant 13 of the liquid crystal displays 10a and 10b, or the liquid crystal displays 10a and There was a glow between 10b.

Although the case where the backlight is a point light source has been described above, the present invention can be applied to a linear light source such as a fluorescent lamp or a surface light source such as an EL (electroluminescence). Needless to say.

[0013]

The present invention is directed to a liquid crystal display device in which the display surfaces of a liquid crystal display are arranged in a dense system in a plane to constitute one screen, wherein a predetermined material is used for a sealant of the liquid crystal display. A large-screen liquid crystal display device with good visibility can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing one embodiment of the present invention.

FIG. 2 is a schematic view showing a state of light at a seal portion according to the present invention and a conventional one.

FIG. 3 is a schematic diagram showing an example of a conventional liquid crystal display device in which one screen is formed by arranging display surfaces of a liquid crystal display in a plane.

FIG. 4 is a schematic view showing a pitch of a display pattern in the device shown in FIG.

5A and 5B are a cross-sectional view and a plan view showing a positional relationship between a light shielding plate and a display pattern in the device shown in FIG.

[Explanation of symbols]

 10a to 10d Liquid crystal displays 11, 12 Substrate 13 Sealant 15a to 15e Backlight

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) G02F 1/1339 505 G02F 1/1347 G09F 9/40 301

Claims (2)

(57) [Claims] 1. A liquid crystal display device to be configured and arranged in a plane of the display surface of the plurality of liquid crystal display device in which a liquid crystal layer are sandwiched between two base plates, between the two substrates Dealt
Shi liquid crystal display device Lumpur agent is transparent and its refractive index m which satisfies the relationship of 0.9n ≦ m ≦ 1.1 N to the refractive index n of the substrate. 2. A battery for irradiating the plurality of liquid crystal displays.
2. The liquid crystal according to claim 1, wherein the liquid crystal has a crite.
Display device.