JPS62124527A - Liquid crystal display panel - Google Patents

Abstract

PURPOSE:To reduce the discontinuity of an image by reducing the width of a no-picture-element part at a joint position. CONSTITUTION:Unit picture elements 8 and a driving element part 9 on a main glass substrate 11 and a color filter 7 on a counter electrode glass substrate 12 positioned opposite said main glass substrate 12 are formed up to end sides 14 and 14' of both glass substrates for connection. A plane sealing adhesive resin layer 4 is formed on main surfaces of two electrode terminal sides 15 and 15' with the external circuit connecting electrode terminal 13 of the main glass substrate 11 which has the driving element 9 such as TFT for controlling liquid crystal formed on the main surface. Spacers 17 for holding a glass substrate gap are scattered on the main surface of the main glass substrate 11 and the counter electrode glass substrate 12 which has a counter transparent electrode 10 and the color filter 7 on the main surface is installed at a specific position by positioning the color filter 7 at a unit picture element 8 on the main glass substrate 11, so that both glass substrates 11 and 12 are adhered and fixed with the plane sealing adhesive layer 4 and spacers 17 while the specific gap is left.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a display device using a liquid crystal display panel, and particularly to a liquid crystal display panel suitable for a large display device constructed by bonding a plurality of liquid crystal display panels. .

BACKGROUND ART Displays using liquid crystal display panels are attracting attention as they are thin, lightweight, and low power consumption displays, but it is difficult to obtain large liquid crystal display panels due to manufacturing technology problems. Therefore, in order to construct a large display, a so-called multi-panel system, in which a plurality of liquid crystal display panels are arranged in a plane and bonded together, has been adopted.

As is well known, a liquid crystal display panel is made by bonding a glass main substrate having a control electrode, a counter glass substrate having a counter electrode, and a color filter (in the case of a color panel) with a sealing material such as resin at intervals of about 10 μm. It has a structure in which liquid crystal is sealed in the same gap.

When a plurality of liquid crystal display panels are joined together, for example, four individual liquid crystal display panels are joined together to form a multi-panel configuration, as shown in FIGS. 4 and 6, LCD panels A to D (1a A resin layer 4 for sealing each liquid crystal 3 is provided near the joint portion 2 of ~1d). The width W of this sealing resin layer 4 varies depending on the dimensions of the liquid crystal display panel and the manufacturing process, but it has a size of approximately 0.6 to 2.0 m, and this area naturally constitutes an image as the liquid crystal display panel. Therefore, there is a drawback that the non-picture element areas 6 are formed in a lattice shape, where the picture elements are divided at the same location and the continuity of the image is disturbed.

In order to eliminate the discomfort caused by the discontinuity of the image formed by the lattice-shaped non-pixel parts that occur at the joints of the liquid crystal display panel due to the sealing resin layer 4, etc., on the surface of the liquid crystal display panel. A method of dealing with this problem by installing an optical path correction device using an optical system such as a mirror or a prism has been proposed.

In the figure, 7 is a color filter, 8 is a unit picture element constituting the picture element area 6, 9 is a drive element section that controls the liquid crystal 3, 1 is a transparent counter electrode, 11.12 is a main and counter glass substrate, 13 is an electrode terminal, and 17 is a spacer for maintaining a gap between glass substrates.

Problems to be Solved by the Invention The present invention solves the problem of image discontinuity caused by non-picture element parts that occur at the joints of the liquid crystal display panels as described above when configuring a multi-panel display using a plurality of liquid crystal display panels. The object of the present invention is to obtain a multi-panel type liquid crystal display panel for the purpose of alleviating discomfort caused by gender.

Means to Solve the Problem In order to solve this problem, the present invention aims to reduce the discontinuity of the image by narrowing the width of the non-pixel part at the joining site. The means for this purpose is to reduce the thickness of the liquid crystal at the end wall surface of the liquid crystal display panel, that is, the end surface perpendicular to the panel surface, by sealing the liquid crystal at the joining site when joining the liquid crystal display panels to each other. (100 μm or less) sealed.

Effect of the Invention According to the present invention, even when a multi-panel type display panel is constructed by joining a plurality of liquid crystal display panels, a pixel region can be formed up to the joint end surface portion between the panels, and a non-pixel region can be formed. Since the width of the area is significantly reduced, discomfort such as division of the image by non-picture element parts can be reduced.

Embodiment A detailed explanation of an embodiment will be given using a liquid crystal display panel for a display panel constructed by piecing together four individual liquid crystal display panels.

FIG. 1A is a sectional view of a single liquid crystal display panel showing the structure of the present invention, B and C are partially enlarged views, and FIG. 2 is a plan view thereof.

Further, FIG. 3 is a schematic cross-sectional view showing the manufacturing process of a single liquid crystal display panel, and is a cross-sectional view taken along line X-X/ in FIG. Note that, for convenience of explanation, the drawings are depicted with dimensional ratios significantly different from those of an actual liquid crystal display panel.

In the drawing, 3 is a liquid crystal, 4 is a sealing resin layer in a flat sealing part, 7 is a color filter, 8 is a unit picture element, 9 is a drive element part such as a TFT for controlling the liquid crystal, 10 is a counter transparent electrode, 11 12 is a main glass substrate, 12 is a counter electrode glass substrate, and 13 is an electrode terminal for external circuit connection.

When a display is constructed by joining four individual liquid crystal display panels together, as in the conventional example shown in FIG. 4,
As shown in FIG. 2, two adjacent sides of the single liquid crystal display panel serve as connecting edges 14 and 14' for connection to other liquid crystal display panels. This connection end portion 14,
The liquid crystal display panel of the present invention has a structure in which the non-pixel area formed by the liquid crystal sealing resin layer 14' is reduced.

As shown in FIGS. 1 and 2, the two sides that the liquid crystal display panel of the present invention touches when connected to another liquid crystal display panel include the unit picture element 8 on the main glass substrate 11 and the drive element section 9.
, and the color filter 7 on the counter-electrode glass substrate 12 which is positioned opposite to the color filter 7 is formed up to the connection end sides 14 and 14' of both glass substrates as shown in the figure.

On the other hand, the structure of the two electrode terminal sides 15 and 15' having the external circuit connection electrode terminal 13 and the liquid crystal sealing part 4 is the same as the conventional sealing part structure.

That is, as shown in FIG. 3A, an electrode terminal side 15 having an electrode terminal 13 for external circuit connection of a main glass substrate 11 having a driving element section 9 such as a TPT for controlling a liquid crystal formed on the main surface.
, on the main surfaces of the two sides of the 16' section, the width W is 0 as in the conventional case.
．． 5-2. A flat sealing adhesive resin layer 4 having a height of about 10 μm is formed. At this time, the flat sealing adhesive resin layer 4
As shown in FIG. 2, although not shown in the cross-sectional view, an opening portion for later filling liquid crystal, that is, a liquid crystal injection hole 16 is formed in a part of the substrate.

After scattering glass substrate gap maintaining spacers (approximately 10 μm) 17 on the main surface of the main glass substrate 11 on which the flat sealing adhesive resin layer 4 has been provided as described above, a counter transparent electrode 10. A counter electrode glass substrate 12 having a color filter 7 is installed in a predetermined position by aligning the color filter 7 with a unit pixel 8 on the main glass substrate 11, and both glass substrates 11 and 12 are sealed with a plane sealing adhesive resin. Adhesively fix with a fixed gap using layer 4 and spacer 17 (Figure 3B)
.

FIG. 1B and FIG. 3C are schematic cross-sectional views showing sealing and joining of the connecting end. As described above, a wall surface perpendicular to the main surface at the end of the glass substrate 11° 12 on which the drive element section 9 and the color filter 7, which provide a function as a liquid crystal display panel, are formed up to the end, ie, the connection end surface 14a. , 14b, an end wall sealing thin plate 18 made of glass, metal, ceramics, resin material, etc. having a thickness (W) of 60 μm to 200 μm is bonded to the glass substrate 11 + 12 no'f elm using an adhesive resin material 19. -'f:'hI) End 1M
It is pasted on the surfaces 14a and 14b and adhesively sealed on the end wall surface. As shown in FIG. 1C, by omitting the end wall sealing thin plate 18 and forming an adhesive sealing resin material 19 with a thickness of 50 μm to 200 μm on the end wall surfaces 14a and 14b, adhesive sealing can be performed on vertical surfaces. If a thin metal plate is used for the end wall sealing thin plate 18, the surface of the thin metal plate may be plated with a metal that can be easily soldered, such as Ni, Cu, Ag, or Au, or similar metals. By using a thin metal plate formed on a metal plate or subjected to a solder plating process, connections between panels can be made by soldering at the same metal parts. After injecting the liquid crystal 3 through the liquid crystal injection hole 16 provided in the plane sealing adhesive resin layer 4 shown in FIG. After injecting the liquid crystal 3 into the liquid crystal panel through the liquid crystal injection hole 16 provided in the flat sealing adhesive resin layer 4 shown in FIG. 2, the liquid crystal injection hole 16 is sealed with the sealing resin 20. A liquid crystal display panel is completed, which has a driving element part 9 and a color filter 7 that provide a function as a liquid crystal display panel up to the connecting edge part between the glass substrates 11 and 12, and has a liquid crystal 3 and a spacer 17 sealed up to the middle part. (Figure 3D).

Effect of the invention 5 In a liquid crystal display constructed by joining a plurality of liquid crystal display panels, the non-pixel area caused by the sealing resin at the joint part can be replaced with a pixel-free area up to the joint edge by the present invention. The width of the no-pixel area is twice the width of the sealing part W on the vertical wall surface at the edge of the panel,
In the present invention, since the sealing part W can be set to 60 to 200 μm, it is possible to significantly reduce the width of the sealing part W on the main surface of the panel to about the tail of the conventional panel. This has the effect of eliminating or reducing the drawback of the multi-panel method, which hinders the continuity of images depending on the region.

[Brief explanation of drawings]

FIG. 1A is a schematic cross-sectional view showing the structure of the sealing part of the liquid crystal display panel of the present invention, FIGS. 1B and C are partially enlarged views of part 8 of FIG. 1A, and FIG. Figure 3 is a cross-sectional view showing the manufacturing process of the panel of the present invention taken along the line xx' in Figure 2;
The figure is a perspective view showing the concept of a multi-panel system configured by connecting multiple (4) liquid crystal display panels.
It is a sectional view taken along line XX7 in the figure. 1a-1d...Liquid crystal display panels A-D, 2...
...Panel joint, 3...Liquid crystal, 4...
... Sealing resin layer (plane sealing part), 5... Picture element area, 6... Non-picture element part, 7... Color filter, 8... . . . Unit picture element constituting the picture element region 5, 9 . . . Drive element section for controlling the liquid crystal, 1
0...Transparent counter electrode, 11...Main glass substrate, 12...Counter glass substrate, 13...
...External connection electrode terminal, 14, 14'...
・End side for connection, 18...Thin plate for end wall sealing, 1
e, 1c/... adhesive resin material. Name of agent: Patent attorney Toshio Nakao and 1 other person
2 Figure

Claims (6)

[Claims] (1) Unit picture elements constituting a picture element as a liquid crystal display panel are formed up to the edge part that contacts another liquid crystal display panel, and a sealing part for liquid crystal sealing is formed on the vertical wall part of the edge part. A liquid crystal display panel characterized by: (2) The end portion is sealed on the vertical wall surface by using a thin sealing plate and adhesively fixed to the vertical wall surface with an adhesive resin material. LCD display panel. (3) The liquid crystal according to claim 1, wherein the sealing on the vertical wall surface of the edge portion is performed by depositing a resin material layer with a thickness of 10 μm or more on the vertical wall surface. display panel. (4) The liquid crystal display panel according to claim 2, wherein the sealing thin plate is made of any one of a glass thin plate, a ceramic thin plate, a metal thin plate, and a resin thin plate. (5) The liquid crystal display panel according to claim 4, wherein a thin metal plate is used as the sealing thin plate, and the thin metal plate is made of a material that can be soldered to the thin metal plate, or a material that has solderability on its surface. (6) The liquid crystal display panel according to claim 4, wherein a thin metal plate is used as the sealing thin plate, and the surface of the thin metal plate is subjected to solder plating treatment.