JPS63274930A - Active matrix liquid crystal panel - Google Patents

Abstract

PURPOSE:To enable inexpensive formation of a partition which forbids light leakage by using a part of stages for forming active elements to form the above-mentioned partition. CONSTITUTION:MIM elements 24 consisting of tantalum 21, tantalum pentoxide and chromium 23 is used as the active elements. The partition 27 are formed by using a part of the stages for forming the active elements to the outer circumference of a picture element region 12 of a liquid crystal panel formed with the active elements on one substrate 28. Then, the leakage of the light from the spacing between the partition 27 and the picture element region 12 is obviated. The formation of the partition which prevents the light leakage and allows the easy viewing of picture elements and characters without increasing the cost is thereby enabled.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for forming parting lines in an active matrix liquid crystal panel.

[Conventional technology]

Conventional liquid crystal panels, especially liquid crystal panels using a backlight, are separated by printing 31 on the L7 glue board as shown in Figure 3, or by printing 4 on the panel as shown in Figure 4.
It was held in 1st class.

[Problem that the invention seeks to solve]

However, in the above-mentioned technique, light leakage 35 occurs from the Fi 34 between the panel 15 and the parting part 14, and parting part printing 4
Light leakage 43 occurs from the gap 42 between the pixel area 1 and the pixel area 12, which obstructs the viewing of images and characters. In addition, printing 41 on the panel or polarizing plate has also been a factor in increasing costs. SUMMARY OF THE INVENTION The present invention is intended to solve these problems, and an object of the present invention is to form a parting that does not cause light leakage without increasing costs.

[Means for solving problems]

The active matrix liquid crystal panel of the present invention includes (i)
The present invention is characterized in that a parting line is formed on the outer periphery of a pixel region of a liquid crystal panel in which an active element is formed on one of the substrates, using a step in the process of forming the active element.

(it) Said closeout is at least 2il! ii) It has a middle or larger diameter, and is characterized by an opaque film being formed over 70% or more of the inside of the cutout.

[For use]

According to the above configuration of the present invention, as shown in FIG.
Images and text became much easier to see without causing any blemishes.

〔Example〕

FIG. 2 shows an embodiment of the present invention, in which quantal (Ta) 21 and tantalum pentoxide (Taa 0
& ), an MIM cord 24 made of chromium (Cr) 23 is used. Outside the pixel area 12, partitions 27 are formed in a tantalum pattern in the vertical and horizontal directions. The side with the lead wire to terminal 25 (in this example, the left and right sides)
, connects the lead-out gland and the parting line to form an input capacitor 26 for static electricity countermeasures (to protect the elements within the pixel from static electricity). The four sides around the pixel are covered with tantalum [II], which helps prevent electrostatic damage during rubbing.

FIG. 5 shows another embodiment of the present invention, in which the outside of the pixel area 12 is partitioned with an opaque metal such as tantalum or chromium. Further, a parting terminal 51 is taken out so that the potential of the metal part of this parting part can be applied from the outside. If the parting part is in a barking state of 70-ting, when electric charge is injected from the outside due to static electricity, the area around the parting line will become a dot, so it is necessary to maintain the potential at the parting part. An input capacitor 2G is formed in the middle of the lead wire to the terminal 25, and an electrostatic countermeasure line 52 is provided on the opposing board side of this capacitor 26 as a measure that is effective in sufficiently preventing electrostatic damage. .

〔Effect of the invention〕

As described above, according to the present invention, by forming a parting line by using a part of the process of forming an active element, light leakage can be prevented without increasing the cost. .

[Brief explanation of drawings]

FIG. 1 is a sectional view of the vicinity of the liquid crystal panel of the present invention. FIG. 2 is a plan view of a section showing one embodiment of the present invention. FIG. 3 is a cross-sectional view (1) of the vicinity of a conventional liquid crystal panel. FIG. 4 is a cross-sectional view (2) of the vicinity of a conventional liquid crystal panel. 15... Active matrix liquid crystal panel 16
...... Upper polarizing plate 17... Lower polarizing plate 22... Pixel ITO electrode 28... Active glass substrate 29...
- Opposing glass substrate FIG. 5 is a diagram showing another embodiment of the present invention. Above broom 2 figure 5

Claims (3)

[Claims] (1) An active matrix liquid crystal panel characterized in that a parting line is formed on the outer periphery of a pixel region of a liquid crystal panel in which an active element is formed on one substrate by using a step in the process of forming the active element. (2) The partition has a width of at least two pixels or more, and an opaque film is formed on 70% or more of the partition. Active matrix liquid crystal panel. (3) The active matrix liquid crystal panel according to claim (1), wherein the parting has a terminal taken out on the outside of the seal so that a signal or a potential can be applied from outside the panel.