JPS60162221A - Liquid-crystal display element - Google Patents

Abstract

PURPOSE:To reduce contrast difference by leading out common lines concentrically at one terminal side of a lower substrate, connecting it to common-line lead-out terminals formed on an upper substrate, and making the total resistance of the common lines nearly constant. CONSTITUTION:Plural common lines 51, 52-563, and 564 are arranged concentrically in the lengthwise direction of the lower substrate 4. Further, lead-out terminals 91, 92-963, and 964 for the common lines are provided at one terminal side (right-hand side in the figure) of the upper substrate 5. They are connected to the common lines 51, 52-563, and 564 at a connection part 10 through lead- out lines 91a, 92a-963a, and 964a electrically with conductive rubber which is not shown in the figure, the connection point 10 is formed slantingly at 45 deg., and the sum of resistance of each common line and each lead-out line is made nearly constant. Consequently, the contrast difference between adjacent display parts is reduced and two-way lead-out structure is realized to facilitate packaging operation.

Description

[Detailed description of the invention] [Field of application of the invention] The V! This invention relates to a common line lead-out structure of a liquid crystal display element manufactured by Company A, particularly a high time division layer dynamic type liquid crystal display element.

[Background of the invention]

FIGS. 1(a) and 1(b) are a plan view and a cross-sectional view of an essential part of an example of a conventional high time division layer dynamic liquid crystal display element. In the same figure, 1tj is a translucent upper substrate on which a plurality of bar-shaped segment lines 2 are formed at a predetermined interval width in the upper transverse direction of the back surface, 31.3 snow~ass *364 is the long side of the upper substrate 1 External lead-out terminals 4 for the segment lines 2 formed on the inner surface end are translucent, with a plurality of strip-shaped common lines 5 formed in the longitudinal direction of the upper surface facing the segment lines 2 formed on the upper substrate 1. A liquid crystal 6 is interposed between the upper and lower substrates 1 and 4, and its periphery is sealed with a sealing material T. A pattern display section (91) in which segment lines 2 from eight companies and common lines 5 are arranged internally in a matrix to display a desired pattern in a matrix.
ゞ916ゞ917ゞ9s* + 9ss-94s 豐94
Reference numerals 9 and 964 are external lead-out terminals for the common wire formed at the four corners of the inner surface end on the long side of the upper substrate 1. It is connected to the corresponding common wire 5 on the plate 4 via the upper and lower connecting portions 1°. The upper and lower connecting portions 1o are electrically connected with a conductive rubber 11 interposed therebetween.

The high time division side dynamic liquid crystal display element configured in this way is
Since the common wire 5 has a so-called two-way terminal structure in which the lead-out terminals of the common wire 5 are arranged on both ends of the upper board 1 in the longitudinal direction, the lead-out terminals of the common wire 5 on the upper board 1 and the common wire 5 on the lower board 4 are connected to each other. Electrical connection with the terminal 3.9 can be easily made by attaching conductive rubber such as zebra rubber.

However, in the high time division side dynamic liquid crystal display element having the above configuration, the lead terminals 9□ to 964 of the common line 5 are arranged in two parts at both longitudinal ends of the upper substrate 1, and signals are simultaneously transmitted from both ends. Since power is supplied, a difference in contrast occurs between the display at the portion closest to the power supply unit and the display at the farthest portion. In other words, as shown in FIG.
Since the pattern display by the common line 5a and the pattern display by the common line 5b whose power feeding section is farthest are adjacent to each other, display unevenness becomes noticeable. Furthermore, since the liquid crystal display element has a capacitive load, there is a problem in that this tendency becomes particularly large when driven at a high frequency, that is, when driven in a high time division manner.

In order to improve this problem, as shown in FIG.
, 92 to sss+ssa have been proposed.

According to such a configuration, the display parts that cause the difference in contrast described above are no longer adjacent to each other, so the display pattern unevenness is not noticeable, and driving at a higher frequency than before is possible. .

However, according to such a configuration, since the lead-out terminals 91 to 964 of the common wire 5 are provided on the short side of the lower substrate 4, the terminal lead-out structure is arranged in three directions, and connection with the drive circuit cannot be easily performed. However, there were drawbacks such as the extremely complex implementation.

[Purpose of the invention]

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide a liquid crystal display element that reduces display pattern unevenness and improves display quality using simple mounting means. It is in.

[Summary of the invention]

In order to achieve such an object, the present invention centrally arranges the common wire leads at one end side of the lower board, intersects the common wire lead terminals formed on the upper board at this part, and connects the common wires at this intersection. By making the upper and lower connections, the resistance values throughout the entire common line are kept constant.

[Embodiments of the invention]

Next, embodiments of the present invention will be described in detail using the drawings.

FIG. 3 is a plan view showing an example of a liquid crystal display element according to the present invention, and the same parts as those in the previous drawings are given the same reference numerals, and the explanation thereof will be omitted. In the figure, commons #5t and 5□ are formed on the lower substrate 4.

5s ~5sz t5as 154141d, lower board 4
They are arranged in a concentrated manner at one end of the short side of the lower substrate 4, and are arranged so that they are short on the upper side in the figure of the lower substrate 4 and gradually become longer in the downward direction in the figure. On the other hand, on the inner surface of the long side end of the upper substrate 1 facing this, there is an enlarged pin 7jll151*5i.
? 5s~5@2*51111584 extraction terminal Ste 9F+'9'1-9s* +9as t9s
4 is formed and arranged, and the extraction terminal 91 with
, L, 9s~9g! +90+, extend to 964 and add lead lines 9ta, 9za, 9sa to 9sga, 9
ssa.

964a is the common wire 51.5t, 5s~5ez
Corresponding to the end of the t sss e564, they are arranged so that the left side in the figure is long and the right side is successively shorter. And common wire 51+52+5
s~563°56B484 end and lead wire 91B
, 9zas9sa~9oz&, 9asa, 9si
Upper and lower connecting portions 10 are located at the portions where the ends of 8 face each other and intersect with each other.
are formed, and are electrically connected with a conductive rubber 11 (not shown) interposed therebetween.

According to such a configuration, each common line 51, 5153 to
562 +564 + Corresponding pull-out terminals 91-9i, 9s to hN s 968 * 9 from the tip of ss4
Each line can have a line length of up to 114 approximately the same.

Therefore, a display pattern free of Ntrano numbers is obtained. Also, the pull-out direction of the pull-out terminal is 2.
Since only a direction terminal is required, connection with a drive circuit is extremely easy.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to reduce the difference in contrast between display patterns between adjacent display sections, thereby obtaining a display pattern with high display quality. Furthermore, since the terminal can be drawn out in two directions, it has extremely excellent effects such as extremely simple and easy mounting with the drive circuit.

[Brief explanation of the drawing]

FIG. 1 (IL), (b) An enlarged plan view of the main parts showing an example of a conventional liquid crystal display element, and a cross-sectional view of the main parts thereof. FIG. 2 is a plan view of the main parts showing an example of a conventional liquid crystal display element. , FIG. 3 is a plan view showing the main part of an example of a liquid crystal display element according to the present invention. 1... Translucent upper substrate, 2. Fist... Segment upper line, 3
1+3! ~ass +364 pot...Segment line external lead terminal, 4...Translucent lower board, 5.5a,
5b @@ a- common line, 51+ 5! y ss ~
ssg + 568 + 564...kai common line, 6
...Liquid crystal, 7...Seal material, 8...Pattern display section, 'ly9! :91~96111 + sss
t 1164 ・Dispute...External lead-out terminal of common line, 9sa, 9*a + 9sa~9szB, 9asa
, l1s4a e 11 # @ leader line, 109・
...Upper and lower connection part, 11. Fist... Conductive rubber. Figure 1 (α) Figure 3

Claims (1)

[Claims] A plurality of translucent segment lines and common lines are arranged in a matrix on the opposing surfaces of translucent substrates disposed opposite each other, liquid crystal is sealed between the opposing substrates, and the inner surface of the opposing end of the substrate having the segment lines In a liquid crystal display device comprising a plurality of common line lead-out terminals, one end of the common wire is concentrated on one side of the board, and these are connected electrically at the intersection of the common line and the lead-out terminal. A liquid crystal display element characterized in that the total resistance value of each common 60 is approximately constant.