JPS60242424A - Transmission type liquid crystal matrix display device - Google Patents

Abstract

PURPOSE:To obtain a transmission type liquid crystal matrix display device having an invisible juncture of liquid crystal panels by disposing a lens or prism in said juncture. CONSTITUTION:A spacer 13 for connection is inserted between the transmission type display panels 11, 11' and the panels are connected by a connecting terminal 12. The prism 14 is installed at the center in the juncture of the panels 11, 11' in the state of permitting dispersion of light when viewed from an observation point 15. The spacer 13 cannot be observed when the transmission type liquid crystal matrix display device is driven. The part where the image in the juncture of the display panels is not displayed is thus thoroughly eliminated and the large-sized wall hanging television is realized.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transmission type liquid crystal matrix display device using thin film transistors formed on a transparent insulating substrate such as quartz glass or soda glass as switching elements.

Although the present invention will be described using polycrystalline 7 silicon as a semiconductor, it can be similarly applied to other semiconductors.

Thin film transistors have the advantage that they can be formed on inexpensive glass substrates and the process cost can be reduced compared to semiconductor elements formed on expensive substrates.

In particular, flat panels that have a continuous transistor array all formed on a transparent insulating substrate and a liquid crystal display, etc.
Is there a light source such as fluorescent display on the back? A transmissive liquid crystal matrix display device can be obtained by improving the setup.

Generally, when using an opaque liquid crystal display (IJTx display device) for image display (television), line-sequential scanning is applied, timing is applied to each scanning line, and a signal voltage is applied to the capacitor corresponding to each pixel. Make it hold. In this way, when a liquid crystal display device is used as a television, the response of the liquid crystal is excellent and relatively good images can be obtained.

In addition, transmissive liquid crystal display devices using thin film transistors formed on transparent substrates can be made thinner, and wall-mounted display devices are considered useful for televisions.

However, the size of the liquid crystal panels used in this type of transmissive liquid crystal matrix display device is limited to about 5 inches, and wall-mounted televisions are made by connecting multiple small panels to make them larger. This is the current situation.

However, in this case, as shown in FIG. 1, there is no pixel for driving the liquid crystal at the connecting portion, and when the liquid crystal panel is driven, the connecting spacer 3 becomes visible.

Further, even if the connection spacer 3 is made completely transparent, the light source on the back surface is visible, making it unsuitable for pixel display.

The present invention aims to improve the method for displaying the undisplayable portions of the connecting portions, which is the problem described above, and to provide a transmissive liquid crystal matrix display device in which the connecting portions are not visible.

Specifically, by placing a lens or prism at the connection part of the liquid crystal panel, it is possible to make the connection screen invisible and to make the inside of the liquid crystal panel visible through the refraction effect of the lens or prism. is possible.

An embodiment of the present invention will be fully explained below with reference to FIGS. 2, 3, and 4.

FIG. 2 is a sectional view of a transmission type liquid crystal matrix display device according to the present invention. Transparent display panels 11 and 11'
A connection spacer 13 is placed in between, and the connection is made using the connection terminal 12. Next, the prism 14 is attached to the transmissive display panel 1.
Observation point 1 is installed at the center of the connection between 1 and 11' so that light can be dispersed when viewed from the bow.

When driving a transmissive liquid crystal matrix display jTh with all prisms installed at the connection part in this way, the connection spacer 1
3 cannot be observed.

FIG. 3 shows a second embodiment according to the invention, which further improves the effects of the present invention by changing the method of arranging thin film transistors, which is conventionally used in transmissive display panels.

By reducing the pitch of the thin film transistor array in the vicinity of the panel ends, that is, in the vicinity of the panel connections, more accurate image display can be achieved when the entire prism 24 is observed. This is because the light passing through the prism is dispersed, so it is possible to correct the situation in which pixels appear stretched.

FIG. 4 shows a third embodiment of the present invention, in which the effect of the present invention is further enhanced by changing the shape of the lens provided at the center of the connection between the display panels 31 and 51t.

By refracting the light that enters the lens by 72 degrees, it is possible to further disperse light and sound. You can increase the effect of the setting.

The lens 34 is installed so that the center of the lens is located at the center of the connection part, and is shaped so that it becomes thinner toward both ends.

Such a lens is installed fL, constant transmission type liquid crystal camera) IJ
When the Tx display device is driven, the connection spacer 33 is
No. In this case, the lens can be made smaller and image distortion can be reduced.

As described above, according to the present invention, an image of the display panel connection portion is displayed.
It is possible to eliminate all the unnecessary parts, and a large wall-mounted screen can provide a transmissive liquid crystal matrix display device that can be used as a television.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a conventional transmissive liquid crystal matrix display device. FIG. 2 is a first embodiment of the present invention, and is a diagram showing a state in which a prism is installed. FIG. 5 shows a second embodiment of the present invention, and is a state diagram in which the degree of integration of thin film transistors is changed. FIG. 4 shows a sixth embodiment according to an uninvented invention, and shows the shape of the prism. This has been changed. Figure 1 Figure 3

Claims (2)

[Claims] (1) A display panel in which a liquid crystal is interposed between a first substrate in which thin film transistors formed on a transparent insulating substrate are arranged in a matrix, and a transparent substrate with a transparent electrode made of gold on one surface. , two or more connected transmissive liquid crystal panels 17
A transmissive liquid crystal matrix display device characterized in that a lens or prism is provided at a display panel connection part in a TUX display device. (2) IJTx display device according to claim 1, characterized in that the first substrate on which the thin film transistors are arranged in a matrix has a higher degree of integration of the thin film transistors near the connection portions. .