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Liquid crystal display formed by a plurality of non-electrically interconnected liquid crystal display panels

a liquid crystal display and panel technology, applied in static indicating devices, non-linear optics, instruments, etc., can solve the problems of difficult to see the joints between the liquid crystal panels, and achieve the effects of eliminating the problems, low power consumption, and easy to s

Inactive Publication Date: 2007-11-06
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a low-power consuming, high-quality liquid crystal display device that can eliminate problems caused by the multi-screen display method and make joints between liquid crystal panels difficult to see. The invention includes a first polarizing element and a second polarizing element that intersect at right angles, and a first photo-blocking film that covers the pixel electrodes of each liquid crystal panel in a predetermined trace width. Additionally, a second photo-blocking film is provided in the connected parts of the liquid crystal panels to fill the spaces of the connected parts and block light leakage through the connected parts. The first and second photo-blocking films can be made of a photo-absorbing film that shows black when absorbing light. The invention makes the joints between liquid crystal panels more difficult to see and provides a natural image.

Problems solved by technology

According to the above structure, a portion where light leaks through the connected parts of the liquid crystal panels shows black under the crossed nicol state of the first and second polarizing elements, thereby making the joints between the liquid crystal panels difficult to see.

Method used

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  • Liquid crystal display formed by a plurality of non-electrically interconnected liquid crystal display panels
  • Liquid crystal display formed by a plurality of non-electrically interconnected liquid crystal display panels
  • Liquid crystal display formed by a plurality of non-electrically interconnected liquid crystal display panels

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first embodiment

[0055]An embodiment of the present invention will be explained in the following while referring to FIGS. 1 through 4.

[0056]As shown in FIG. 1, a liquid crystal display 1 of the first embodiment is of the direct sight type. The liquid crystal display 1 comprises a main body and two polarizing plates 8 (polarizing elements). The main body includes a plurality of liquid crystal panels 2 of an active matrix type placed on a single surface of a large substrate 3, and a back light such as a cold cathode tube on the rear surface (lower in the drawing) of the liquid crystal panels 2. The polarizing plates 8 will be described more in detail below. A driver which controls an image signal and the back light are not shown in the drawing. The viewer can see the image data inputted into the liquid crystal panels 2 when the liquid crystal panels 2 modulate the light from the back light in accordance with the input image data.

[0057]As shown in FIG. 2, each liquid crystal panel 2 is of the same stru...

second embodiment

[0089]Another embodiment of the present invention will be explained while referring to FIGS. 1 through 5. Hereinafter, like components are labeled with like numerals with respect to the first embodiment and the description of these components is omitted for the explanation's convenience.

[0090]As shown in FIG. 5, a liquid crystal display 20 of the second embodiment comprises a plurality of liquid crystal panels 2 sandwiched by two large substrate, the large substrate 3 (base) and a large substrate 21 (base). The liquid crystal panels 2 of the second embodiment are of the same structure as those of the first embodiment. The driver controlling the image signal and the back light are not shown in the drawing.

[0091]The liquid crystal display 20 differs from the liquid crystal display 1 of the first embodiment in that the large substrate 21 is additionally laminated to the liquid crystal panels 2 which have already laminated to the single plane of the large substrate 3. The refraction fac...

third embodiment

[0097]Another embodiment of the present invention will be explained while referring to FIGS. 6 through 9. Hereinafter, like components are labeled with like numerals with respect to the above embodiments and the description of these components is omitted for the explanation's convenience.

[0098]As shown in FIG. 6, unlike the liquid crystal display 1 of the first embodiment, a liquid crystal display 30 of the third embodiment includes a second photo-blocking films 31 that cover the end surfaces of the connected part side of the liquid crystal panels 2 (the end surface of the glass substrate 11) along a longitudinal direction in a predetermined width. Each second photo-blocking film 31 is perpendicular with respect to the black matrix 5 and extends in a constant width toward the front surfaces of the liquid crystal panels 2. The second photo-blocking films 31 are made of, for example, a black resin made by dispersing a pigment or semi-conducting particulates (for example, carbon partic...

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Abstract

A liquid crystal display comprising a plurality of liquid crystal panels placed on a single plane of a large substrate, and a black matrix made of a photo-absorbing film that shows black when having absorbed light. Two polarizing plates are respectively placed to cover the front and rear surface of a set of liquid crystal panels almost entirely in such a manner that their polarizing axes intersect at right angles. The resulting multi-screen liquid crystal display consumes less power, retains excellent display quality, and makes the joints between the liquid crystal panels difficult to see.

Description

[0001]This application is a continuation of Pat. No. 08 / 468,649, filed Jun. 6, 1995, abandoned.FIELD OF THE INVENTION[0002]The present invention relates to a liquid crystal display used for AV (audiovisual) systems or OA (office automation) systems.BACKGROUND OF THE INVENTION[0003]Recently, the need for a high-definition large-screen display which is lighter, thinner and less-power-consuming has been increasing for a TV set representing the AV systems intended for home use or the OA systems. For this reason, the development of the large-screen displays including a CRT (cathode ray tube), an LCD (liquid crystal display), a PDP (plasma display panel), an EL (electroluminescent) display, and an LED (light emitting display) has been proceeding toward practical use.[0004]Of all types of displays, the liquid crystal display is most advantageous in that: it has the least depth (thickness); it consumes less power; and it easily displays full color images. Thus, the liquid crystal display ha...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G02F1/133G02F1/1333G02F1/1339G02F1/1335G02F1/1347
CPCG02F1/13336G02F1/133
Inventor IZUMI, YOSHIHIROFUJIWARA, SAYURISHINOMIYA, TOKIHIKO
Owner SHARP KK
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