JPS608890A - Liquid crystal display panel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid crystal display device for a flat display, and more particularly to a liquid crystal display panel having a pattern shape driven by multiple matrixes, which enables a large capacity display that exceeds the performance of the display system.

Background of the Technology When displaying characters on a dot-matrix type liquid crystal display device, C2 generally uses a line-sequential scanning method in which data is input into signal lines all at once and the scanning lines are sequentially driven. Since the electro-optical characteristics of the liquid crystal in the liquid crystal display panel are not constant, the number of scanning lines is naturally limited. And if the number of scanning lines is increased, the viewing angle range becomes narrower and the contrast ratio decreases, so the limit is 16 to 32 lines.For this reason, for example, for high quality When displaying 64 or more lines by scanning with 16 trees, it is necessary to multiplex the patterns so that they are essentially displayed using 16 lines.

Prior Art and Problems Figure 1 shows the electrode pattern of the conventional electrode double matrix structure in which patterns are multiplexed in this way. 11 in the figure,
1t+181... is a scanning electrode, 21 + 22 +
2. y24*25+26+... is a signal electrode. Each scanning electrode is formed on the inner surface of one glass substrate constituting the liquid crystal display panel, and each signal electrode is formed on the inner surface of the other glass substrate. This electrode pattern was mainly designed for full dot matrix display.

However, when displaying characters using this l-data, the signal line driving system is different from that of the conventional simple matrix structure. Ding l “Wachi, t
In the case of a pure matrix structure, data can be input to each signal line in column #1 at the same time, but in the case of the minimal double matrix structure shown in FIG.
2g +2N +... and signal line 22.2G.

2, I,... It is necessary to input binding-C data.

Therefore - [・7< 1 The conventional f(t, super double ma) IJ in Fig.
In the case of Lux construction, 11 is pure ma) +1 In the case of Lux construction, the character display drive printed wiring board that has been used conventionally cannot be used as is, and pattern conversion is required. There was a problem that the collateral method of 1°゛1C was complicated.

Purpose of the Invention The present invention is intended to solve the above-mentioned problems, and provides a pattern shape that enables multiplexing and processing using a character display drive printed wiring board in the case of a small line matrix structure as it is. The purpose of the present invention is to provide a liquid crystal display panel with the following features.

Structure of the Invention In the present invention, an electrode pattern of 6 or more simple matrixes each having a line display of characters ()+1x structure is provided, and the 0:I mark I+! pole pattern on the inside of the pile is provided. The signal electrode should be brought out from the terminal section by a lead-out line with a pattern width of 70 μm or less passing between each borrowed electrode of the above-mentioned electrode pattern on the paneer section side of the panel. We aim to achieve the above objectives by:
It is also possible to arrange the scanning electrodes of the electrode pattern between the signal electrode and the same substrate by one-over processing.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to FIGS. 2 and 3.

FIG. 2 shows the “civil rights pattern” according to the present invention.
16x 16 dots 41 with duty ratio 1/16 drive
This is a case where 4 lines of fishing characters are displayed, and in the figure, 11, 112, 113, ..., 11.6 are 16 in the first line formed in the character display matrix on the terminal side. Book scanning 71i pole, 121 , 122 y 123 +...
- are 16 signal electrodes that form a simple matrix by intersecting the pole at 1°1 of this first row of scans, 131, 13
2, . . . are 16 scanning electrodes in the second row formed in the character display matrix portion on the center side of the panel, 141.
+142.14s,... are the 16-tree signals that intersect with the scanning electrodes in the second row to form a simple matrix. Although not shown, these points are F from the center line of the pipe.
(lower side in Figure 2).

The signal electrodes 12+ -122, 12st... are terminal portions 15+, 152, 15g+ for external extraction formed on a glass substrate comprising 41 of the respective bond electrodes.
・Take out line 16z162.16. , . . . and the signal electrodes 14 . , 14□, 14°, . . . are terminal portions 171, 172 similarly formed on the glass substrate.
, 17. ,... Take out line 1B+, 1B2
, 18s ---. The output lines 18+, 182, 18*, . . . are drawn out in l\ paths between each signal electrode in the first row as shown in the figure.
It was confirmed that when the pattern width was about 7 μm, the non-display portion became slightly black, and when the pattern width was 50 μm or less, it was easy to see and there was no problem in practical use. Further, from a manufacturing point of view, there is no problem even in the case of large piles as long as the pattern width is 1 μm or more. From these points, in consideration of yield, a pattern width of 50 μm is most suitable when one line is passed through as in this example. In addition, for further multiplexing, two wires are connected,
It is also possible to make 3 trees through, and the total width is 7Q/1m.
There's no problem with that below. 8, 6th and 4th not shown
The terminal portions of the signal r base pole in the row are terminal portions 151 and 15□
, 17□, 17□, .

In this way, each character is displayed on each terminal section arranged as shown in Fig. 2) + Signal i' of J rack section The character display drive printed wiring board used in the case of the simple matrix structure can be used as is. These terminals can be taken out from the outside without any problem using a flexible printed board or an elastic connector.

Figure 3 shows an example of application.

This application example is related to the scanning electrode extraction structure.
In the figure, IL, 11t, and 11g are scan 7 of the first row.
Tji pole, 13; , 13; , 13; , -c-
x 2nd row) There is a scanning electrode-c.

In the case of this example, the scanning electrodes 11+, 11t, 113,
. . . , 16 (, 1≦, 1ro〈, . . 16 runners for crossover processing that extend to f'i'f5:pole'
9+, 19t, 19g+... are formed. The scan electrode 19 for crossover processing is the scan electrode 11: and the scan electrode 16; and the scan electrode 192 for the crossover process is the scan electrode 11 and the scan electrode 16!
They are connected to each other by conductive paste or the like. Scanning electrode 193 for crossover processing. . . . are connected in the same way, and in FIG.

Note that this connection is made within a gap of about 10 μm, but it can also be made using solder, metal balls, etc. in addition to conductive paste.

By performing such lossover processing, it is possible to (1) take out the terminal portion of the scanning electrode at the same time as the signal electrode; (2)
It becomes possible to eliminate multilayer wiring on the drive printed wiring board on the scanning side, and to make the aesthetics more compact.

Effects of the Invention As described above, according to the present invention, six or more sets of electrode patterns each having a simple matrix structure, each displaying a character in a line, are provided in a pile, and the electrode patterns on the inside of the pile are provided. The signal electrode is connected to the eB on the terminal side of the pipe.
Since the electrode pattern is arranged to be taken out to the end T-P1~ side by the lead line with a pattern width of 70 μm or less passing between each signal electrode, various effects such as the following can be achieved. It is possible C.

(1) It is possible to perform multiplexing processing by using the character display drive printed wiring board used in the case of the simple matrix structure of JL and C (70), which was used in the case of the simple matrix structure since FE, and with a new idea.
;There is no need to create a single pole pattern.
//L Useful display j6 current C cut.

(2) The positioning accuracy of the upper and lower glass plates is lower than that of the conventional electrode pattern shown in FIG. 1, and manufacturing is easier and the yield is also lower.

4.1. ≦1 Recommendation of the song Figure 1 shows the rq polar pattern diagram of the conventional electrode double matrix structure, Figures 2 and 6 show examples of the liquid crystal display panel according to the present invention, and Figure 2 shows the rq polar pattern diagram of the conventional electrode double matrix structure. Fig. 6 is an explanatory diagram of the processing procedure for forming the terminal portion of the two electrodes on the same plate surface as the signal 1 electrode.

In the figure, 118.11+, 112+11≦, 11*
, 1, ..., 131, 13;, 1ro 2, 1ro;, 1
31,1ro2,...,19. ．． 19□, 19s
,...is Seiden Orii 12+ + 122
+ 12s + ..., 141, 142, 1
43, ... [Mai, No. J electrode, 151,
152.15g -...+ 171,172 p 1
73 +...1 terminal part, 16. ．． 16□, 163.
..., 188.182.183. ...This is the signal electrode output line.

Patent applicant: Fujitsu Limited Agent: Patent attorney: Kugo Tamashima (1 other person) Figure 1 Figure 2 Japanese Patent Publication No. 1988-8890 (4) Figure 3

Claims (1)

[Claims] 1. In a dot matrix type liquid crystal display panel that displays characters by multiplexing 't7i poles, three or more sets of electrode patterns each having a simple matrix structure each displaying a character in a row are provided, The signal electrode of the electrode pattern on the inside side of the panel is taken out to the terminal side from a lead line l2 having a pattern width of 70 μm or less passing between each signal lα pole of the electrode pattern on the terminal side of the panel. A liquid crystal display panel characterized by: 2. The liquid crystal display panel according to claim 1, wherein the scanning electrodes of the electrode pattern are brought out on the same plate surface as the signal electrodes by crossover processing.