JPS62227126A - Liquid crystal display device - Google Patents

Abstract

PURPOSE:To easily lead round respective electrodes by forming striped transparent electrodes and a color filter on a glass substrate for a common electrode, forming three layers of electrodes on a glass substrate for segment electrodes, and connecting the electrodes of the 2nd and the 3rd layers to terminals of a cell by the electrode of the 1st layer. CONSTITUTION:The common electrode 12 and color filter 13 are arranged on the glass substrate 11 and the three layers of transparent segment electrodes 15-17 are provided on the other glass substrate 14 for the segment electrode. In this case, an insulating film 18 is interposed between the segment electrode 15 of the 1st layer and the segment electrode 16 of the 2nd layer and an insulating film 19 is interposed between the segment electrode 16 of the 2nd layer and the segment electrode 17 of the 3rd layer to attain insulation among the electrodes; and the segment electrode 16 of the 2nd layer and the segment electrode 17 of the 3rd layer are connected to the segment electrode 15 of the 1st layer through through holes of the insulating films 18 and 19 and the segment electrode 15 of the 1st layer is connected to a terminal of the cell.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a multicolor one-type liquid crystal display device.

[Prior Art] Generally, as this type of liquid crystal display device, one having the configuration shown in FIG. 9 is known. In the figure, reference numeral 1 denotes a glass substrate for the common electrode, on which a transparent electrode 2 and a color filter 3 are attached, and on the other glass substrate 4 for the segment electrode, a layer of transparent segments is mounted. It has a configuration in which an electrode 5 is attached. In the figure, reference numeral 6 is a liquid crystal, and 7 is a polarizing plate.

[Problems to be Solved by the Invention] In the conventional example, since the transparent electrode provided on the glass substrate 4 for segment electrodes is one layer, segment 1
- When the number increases, it becomes extremely difficult to route both the segments and the common electrodes, and the colors other than the display area are fixed to one color and the color scheme cannot be changed.

[Means for Solving Problems 1] The present invention is a specific means for solving the problems of the conventional example, in which striped transparent electrodes and color filters are formed on a glass substrate for a common electrode, and segment Three layers of electrodes are formed on the glass substrate for electrodes with an insulating film in between, and the second and third layers of the three layers of electrodes cover the effective display area. This provides a liquid crystal display device characterized in that the second and third layer electrodes are connected to the terminals of the cell by the i-th electrode, and the glass substrate 4 for the segment electrodes is By providing three layers of electrodes, it can be divided into an electrode dedicated to right-hand motion display and an electrode dedicated to energization, tapping, and routing, and even if the number of segments increases, the common electrode can be easily routed.

[Example] Next, the present invention will be explained in more detail based on the illustrated example. 11 is one glass substrate for the common electrode;
A common electrode 12 and a color filter 13 are arranged on the glass substrate 11, and three layers of transparent segment electrodes 15, 16, .
17 is provided. In this case, an insulating film 18 is interposed between the first layer segment electrode 15 and the second layer segment electrode 16, and the second layer segment electrode 16 and the third layer segment electrode 17 are interposed. An insulating film 19 is interposed between them to insulate each electrode opening, and the second layer segment electrode 16 and the third layer segment electrode 17 are formed through the through holes of the insulating film 18 and 19. The first layer segment electrode 15 is connected to the terminal of the cell. Then, the glass substrate 11 for the common electrode and the glass substrate 14 for the segment electrode are placed facing each other, a sealing material 20 is provided near the periphery, and the liquid crystal 21 is sealed inside to form a liquid crystal cell. be done.

The common electrode 12 provided on the glass substrate 11 is formed in a striped configuration in which three different electrodes are arranged adjacently and alternately, and a color filter is arranged on these three electrodes. 13 as shown in Figure 2,
An arrangement in which red R, green G, and blue B are arranged adjacent to each other alternately is used, and in this case, the common electrode 12 is 1/3
It is driven by duty time division, and the display can be negative or positive. The common electrode of the present invention having the above configuration has three colors, but if it is made of two colors, for example red R1 green G, as shown in FIG.
It is sufficient to use a color filter formed by combining comb-shaped commons 114K, and in which red R1 green G are arranged alternately in correspondence.

The first to third layer segment electrodes 15, 16, and 17 formed on the other glass substrate 14 are alternately formed with insulation 1j318°19 interposed therebetween, and the segment electrode 15 is formed on the fourth layer. The segment electrodes 16 are formed as shown in FIG. 5 and the electrodes are formed in the pattern shown in FIG.
6a has multiple stages. Furthermore, the segment electrodes 11 are formed as segments capable of performing a predetermined display as shown in FIG. The insulating films 18 and 19 are formed as shown in FIGS. 7 and 8, and the insulating film 18 has a plurality of through holes 18a, and the insulating film 19 also has a plurality of through holes 19a. It is formed.

Therefore, after disposing the first layer segment electrode 15, the second layer segment electrode 1 is placed with the insulating film 18 interposed therebetween.
G is provided and electrically connected to the first layer segment electrode 15 via the through hole 18a.

Then, after interposing the insulating film 19, the third layer segment electrode 17 is arranged, and the through holes 16a, 18a,
It is connected to the first layer segment electrode 15 via 19a. With this configuration, the second and third layer segment electrodes 16 and 17 cover the entire effective display area as a cell.

[Function] In the liquid crystal display device of the present invention configured as described above, by selectively energizing the common electrode 12 and changing the time, between it and the pigment Ti electrode 16 of the second layer, It is possible to create an infinite number of background colors of red R1 green Gqn color B alone or in combination, by applying an appropriate voltage to the segment electrodes 17 of the third layer for an appropriate time to this background color. , red R1 green G1
Display patterns can be displayed using an infinite display color of blue B alone or any combination of colors. Further, when the common electrode is made of two colors, its driving is performed at 1/2 duty, and the color that can be displayed in this case is an additive color mixture of the two colors.

[Effects of the Invention] As explained above, in the liquid crystal device according to the present invention, a striped transparent electrode and a color filter are formed on a glass substrate for a common electrode, and a striped transparent electrode and a color filter are formed on a glass substrate for a segment electric bridge. Three layers of electrodes are formed with an insulating film in between, and the second and third layers of the three layers of electrodes cover the effective display area. By connecting the layer electrodes to the cell terminals through the first layer electrodes, each segment electrode and common electrode can be routed very easily even when used for segment type multi-color displays. It has this excellent effect.

Moreover, the combination described above also provides an excellent effect in that the background color can be selected as appropriate.

[Brief explanation of drawings]

FIG. 1t is a schematic diagram of a liquid crystal display device according to the present invention,
Fig. 2 is a schematic plan view of a color filter used in the device, Fig. 3 is a schematic plan view showing an example of the common electrode used in the device, and Fig. 4 is a first layer A schematic plan view showing the segment electrodes of the eye, FIG. 5 is a schematic plan view showing the segment electrodes of the second layer, and FIG. 6 is a schematic plan view showing the segment electrodes 1 to 3 of the third layer. 7 and 8 are schematic plan views showing insulating films, respectively, and FIG. 9 is a schematic cross-sectional view of a conventional liquid crystal display device. 11... Glass substrate for common electrode 12...
... Common electrode 13 ... Color filter 14 ... Glass substrate 15 for segment electrode
...First layer segment electrode 16...
- Second layer segment electrode 17... Third layer segment electrode 18, 19... Insulating film 2
0...Sealing material 21...Liquid crystal 16a, 18a, 19a...Through hole Fig. 6 Fig. 7 Fig. 8 Fig. 9a

Claims (1)

[Claims] A striped transparent electrode and a color filter are formed on the glass substrate for the common electrode, and three-layer electrodes are formed on the glass substrate for the segment electrode with an insulating film sandwiched between them.
Of the three layers of electrodes, the second and third layer electrodes cover the effective display area, and the second and third layer electrodes are connected to the cell terminal by the first layer electrode. A liquid crystal display device characterized in that it is connected to.