JPS6187190A - El 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 [Field of Application of the Invention] The present invention relates to an EL display device, and more particularly to an EL display device having IJ-lux electrodes capable of displaying multiple colors.

[Background of the invention]

The double-insulated thin-film BL display device is manufactured by Nikkei Electronics (
1973, July 30), 1973, 7, 30), rEL is manufactured on a transparent substrate, such as glass, using a thin film technique such as vapor deposition or sputtering. That is, as shown in FIG. 4, a transparent electrode 2 made of InzOs or the like is provided in a stripe shape on a transparent substrate l, and on top of this, for example, a dielectric material 4, 5 such as Y2O3+ AtzOs, and Mn sandwiched therebetween. It has a three-layer structure with an EL layer 6 made of ZnS doped with an activator such as, and a back electrode 3 is provided in a stripe shape on top of the EL layer 6 to be perpendicular to the transparent electrode 2, thereby forming a thin film EL display panel with a matrix structure. do. When an appropriate AC voltage is applied to each of the electrode groups 2 and 3 of this panel, the EL layer 4 in the minute area where both electrodes intersect emits light. This minute area portion is called a pixel. This thin film EL element has long life, high brightness and conventional dispersion type E
It has superior characteristics compared to L elements.

The method for displaying multiple colors using double-insulated EL elements is as follows:
As disclosed in Japanese Unexamined Patent Publication No. 59-56391, transparent electrode films and light emitting layers having different emission wavelength characteristics are alternately laminated on a substrate, and a back electrode is formed on the top.

Electrodes 2.3 arranged in a matrix above and below Φ of the dielectric layer 4.5 sandwiching the EL layer 6 are drawn out only on one side of the substrate l serving as a panel, and serve as connection terminals with an external circuit. Form 10.11. The connection terminal group 10.11 is connected to, for example, a flexible printed wiring board or the like.

This method has the advantage that there is little pixel misalignment and it is easy to create multiple colors, but it requires a large number of electrodes to be pulled out to connect to an external drive circuit, and the area of the substrate that becomes the panel is larger than that of a practical display screen. becomes large.

[Purpose of the invention]

An object of the present invention is to facilitate the extraction of matrix-structured electrodes capable of multicolor display, and to facilitate connection with an external circuit.
We are providing panels.

[Summary of the invention]

The present invention is. When EL panels with different emission colors are fabricated with matrix-structured electrodes drawn out only in one direction of the panel, and when these panels are placed with their pixel portions facing each other via a spacer, the panel substrates overlap each other diagonally. The connection part with the outside is exposed.

[Embodiments of the invention]

An embodiment of the present invention will be described below.

The panel substrates 15 and 16 shown in FIG. 1, which are panels with electrode structures and have different emission wavelength characteristics of the EL layer 6, are opposed to each other with a spacer 17 interposed therebetween so that the pixels overlap in the viewing angle direction (lower part in the drawing). At this time, the electrode 2 of one panel substrate 15
, 3 are both transparent electrodes 1), the electrode 20 of the other panel substrate 16 is a transparent electrode, and 30 is manufactured as a back electrode made of, for example, At.

In the EL panel configured as shown in the cross-sectional view of FIG. 1, each pixel is located between electrodes 2 and 3 and between electrodes 20 and 30
By applying an appropriate alternating current voltage between them, the panel 16 emits light of wavelength a, and the panel 15 emits light of wavelength bi. The intensity of these lights depends on the applied voltage, e.g.
By appropriately changing the amplitude f, pulse width, frequency, etc., it is possible to continuously change the light from wavelengths a to b, making it possible to display multiple colors. Also, the panel space 40
In order to prevent deterioration, a highly transparent liquid such as silicone oil may be injected.

FIG. 2 is a plan view of the panel shown in FIG.
and 16 are arranged so that when the pixel portions overlap, the connection terminals 10, 11, 10', and 11' are separated from each other, overlap, and extend outside of each other's panels. By doing so, wiring connections with external circuits can be easily made, and the workability of manufacturing nine panels can be improved.

In this embodiment, only the case where each panel has one layer is shown, but it may be multilayered with two or more layers. In this case, the effect of producing full color will be poor.

〔Effect of the invention〕

According to the invention. E with matrix configuration that can display multiple colors
With the L display device, the electrodes can be easily drawn out and the connection with external circuits is simple.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the panel of the present invention, FIG. 2 is a plan view of the panel of the present invention, FIG. 3 is a perspective view of the panel of the present invention, and FIG.
The figure is an explanatory diagram of a conventional EL panel.

Claims (1)

[Claims] 1. An EL matrix panel in which a thin EL layer sandwiched by a dielectric thin film is interposed between electrodes arranged in a matrix, and is characterized in that two matrix panel substrates are diagonally opposed to each other with a spacer interposed between them. EL display panel.