JPH02204774A - Liquid crystal display panel - Google Patents

Abstract

PURPOSE:To obtain excellent image quality and to expand the size of a liquid crystal display panel by directly connecting both electrode terminals. CONSTITUTION:Both the electrode terminal parts 3 are mutually opposed so that glass substrates 1, 2 are projected from respective opposite substrate and connected through a joint part 7 consisting of an anisotropic conductive film, solder, a wax material, a bonding material, or the like to form a large scale liquid crystal panel. Since the thickness of a liquid crystal layer 5 can be uniformly held by said constitution, the display quality of the whole screen can be uniformed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to increasing the size of a liquid crystal display panel in which a liquid crystal layer is sandwiched between two upper and lower substrates made of glass, resin, or the like.

[Prior Art] A conventional liquid crystal display panel had a structure as shown in FIG. 2(α)(b). That is, FIG. 2(α) is an external perspective view of the liquid crystal display panel, and FIG. 2(b) is a partial sectional view. In the figure, 21 and 22 are glass substrates, 23 is an electrode terminal, 24 is a color filter layer, 25 is a liquid crystal layer, 2
6 shows an internal electrode pattern. The glass substrates 21 and 22 in the figure are extremely large, for example, 14 inches or more diagonally. For example, when displaying a matrix screen such as a television image, a large number of electrode terminals and internal electrode patterns are required.

[Problems to be Solved by the Invention] However, as is clear from FIGS. 2(α) and (b), the conventional liquid crystal display panel has many interlayer points.

First, a liquid crystal display panel displays an image by controlling the voltage applied to liquid crystal molecules to make the liquid crystal molecules stand up or lie down. Therefore, even if the voltage applied to the pixels from the outside is the same, if the voltage substantially applied to the liquid crystal molecules is uneven, the image display quality of the liquid crystal display panel will be partially uneven. In contrast, conventional liquid crystal display panels use extremely large glass substrates, so the thickness of the liquid crystal layer between the glass substrates tends to be uneven.

As a result, the voltage applied to the liquid crystal molecules becomes non-uniform, and the quality of image display is extremely degraded. 27 in Figure 2Cb) shows a component where the thickness of the liquid crystal layer is uneven due to the bending of the glass substrate.Furthermore, conventional liquid crystal display panels have 8 large screens and many pixel wirings on a single glass substrate. Since it is formed by being recessed inside, for example, when a liquid crystal display panel is driven by an active matrix, the yield of active elements affects the yield of the liquid crystal display panel, which becomes a factor that increases the cost.

Furthermore, while trying to make a large-sized liquid crystal display panel in the conventional liquid crystal display panel, there is a natural limit to the production of glass substrates, so it is not possible to make a large-sized liquid crystal display panel larger than a certain limit.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a liquid crystal display panel that solves these conventional drawbacks and can be made evenly larger without deteriorating image quality.

[Means for Solving the Problems] The liquid crystal display panel of the present invention is a liquid crystal panel unit in which a liquid crystal layer is sandwiched between two upper and lower substrates such as glass or resin.
The side has an electrode terminal portion whose dimensions are larger than that of the opposing substrate, and between the plurality of liquid crystal panel units, the electrode terminal portions are directly anisotropically connected to each other so that both electrode terminal portions face each other. A large liquid crystal display panel is created by joining with a conductive film, solder, brazing material, adhesive, etc., and the liquid crystal panel unit drive signal is transmitted via the adjacent liquid crystal panel unit through the joint of the electrode terminals. It is characterized by supplying.

[Example] An embodiment of the present invention will be described below based on the drawings.

FIG. 1 (α) shows an external perspective view of this embodiment,
FIG. 1 Ch) shows a partial sectional view of this embodiment. In FIG. 1(cL)(b), 12 is a glass substrate, 3
is an electrode terminal, 4 is a color filter layer, 5 is a liquid crystal layer, 6
7 is an internal electrode pattern, 7 is an anisotropic conductive film, and solder.
9 Joining materials such as materials and adhesives are shown.

As is clear from the figure, since the liquid crystal display panel according to this embodiment connects a plurality of relatively small liquid crystal panel units to form a large liquid crystal display panel, the thickness of the liquid crystal layer of one liquid crystal panel unit is uniform. Therefore, if the voltage applied to the pixels from the outside is the same, it is possible to substantially equalize the voltage applied to the liquid crystal molecules, that is, the force that makes the liquid crystal molecules stand up or fall down. As a result, display quality can be made uniform over the entire screen.

Furthermore, since a large LCD panel is formed by connecting multiple relatively small LCD panel units, for example, when the LCD panel unit is an active matrix driven LCD panel, the number of active elements present in - LCD panel units is reduced. Therefore, the proportion of defective active elements is probabilistically reduced, and as a result, the yield of the entire liquid crystal display panel is improved.

In addition, since the liquid crystal display panel according to this embodiment forms a large liquid crystal display panel by connecting a plurality of relatively small liquid crystal panel units, it is possible to form a fairly large liquid crystal display panel by connecting a large number of liquid crystal panel units. It becomes possible to manufacture.

In addition, the liquid crystal panel unit that connects multiple pieces has electrode terminal portions that are larger on both sides so that the dimensions of the substrate protrude from the opposing substrate. Directly apply an anisotropic conductive film, solder, wax, etc. so that the terminals face each other.
Because they are joined using materials, adhesives, etc., the area required to join these adjacent LCD panel units is extremely small. It is possible to reduce the sense of discomfort caused by the seams of the entire image.

In addition, in the liquid crystal display panel in this embodiment, a plurality of liquid crystal panel units are connected to form one large liquid crystal display panel, and the electrode terminals of the liquid crystal panel units are connected together. Therefore, for example, if the electrical signal that drives the liquid crystal is supplied from the outer electrode terminal of the outermost liquid crystal panel unit of a large liquid crystal display panel, the electric signal that drives the liquid crystal will be transmitted through the joints of multiple electrode terminals and the liquid crystal panel unit. It is possible to drive the liquid crystal of the liquid crystal panel unit located at [111] of the liquid crystal display panel.

[Effects of the Invention] As explained above, the present invention has been described in 5. By directly joining the electrode terminals of a plurality of liquid crystal panel units to form a large liquid crystal display panel, the joints of the liquid crystal panel units do not cause any discomfort. It has good image quality (and good yield), and has the effect of forming a larger screen.

[Brief explanation of the drawing]

FIG. 1(α) is an external perspective view of a liquid crystal display panel according to an embodiment of the present invention. FIG. 1(b) is a partial cross-sectional view of a liquid crystal display panel in one embodiment of the present invention. FIG. 2 (α) is an external perspective view of a conventional liquid crystal display panel. FIG. 2 (6) is a partial cross-sectional view of a conventional liquid crystal display panel. 1.2 3.2 4.2 5.2 6.2 days, 2. 21.22...Glass substrate 3...Electrode end, terminal 4...Color filter layer 5...
...Liquid crystal layer 6...Internal electrode pattern...
・・Joint portion 8・・・・・・Seal portion・・・・・・More than the deflection of the glass substrate

Claims (1)

[Claims] In a liquid crystal panel unit that uses two upper and lower glass or resin substrates to sandwich a liquid crystal layer, at least two sides of the liquid crystal panel unit have electrodes that are larger in size so that the dimensions of the substrate protrude from the opposing substrate. A large size can be achieved by directly joining a plurality of the above-mentioned liquid crystal panel units to each other with an anisotropic conductive film, solder, brazing material, adhesive, etc. so that the electrode terminal parts face each other. What is claimed is: 1. A liquid crystal display panel comprising: a liquid crystal display panel; and a liquid crystal panel unit drive signal is supplied via an adjacent liquid crystal panel unit via a junction of the electrode terminals.