JPS5816284A - Electrode substrate for 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 an electrode substrate used in a display panel such as a gas discharge panel or an EL display panel.

A gas discharge panel, which is said to have relatively high luminance, has a plurality of linear electrodes 3, 4 arranged at small intervals in a display area on a pair of glass substrates 1.2, as illustrated in FIG. The linear electrodes 3 and 4 are arranged in parallel, and the linear electrodes are further covered with transparent insulating layers 5 and 6.
are arranged opposite to each other through a sealed gas discharge space 7 in a shape perpendicular to each other, and the points are discharged, and the discharge light is used to display characters, numbers, etc., which can be observed from the outside through electrodes on the display surface side. It has become.

By the way, as the purpose of use of the gas discharge panel described above expands, even higher brightness is required, and the electrodes of the panel are also made of opaque metal electrodes such as gold (AI) (indium oxide (In20s) and tin oxide (SnO)). ) or their mixtures (hereinafter referred to as transparent electrodes) have come to be widely used. However, on the other hand, it has the disadvantage of high electrical resistance, so we aim to reduce the resistance by forming the transparent electrode thicker, about 2 μm or more.Incidentally, about IQ
In order to obtain a transparent electrode having a sheet resistance value of 1000 sq. ft. sq. by using an indium oxide (In203) film, a film thickness of approximately 5 mm is required.

However, in the display area of a glass substrate with a thickness of 2 to 3 μm, a plurality of transparent electrodes with a thickness of about 2 μm or more were provided, and an insulator layer with a thickness of about 25 μm was further provided on the electrodes. Due to the difference in thermal expansion coefficient between the plurality of transparent electrodes, that is, the transparent electrode group, the substrate portion of the display area where the transparent electrode group is disposed exhibits a relatively gentle warpage, especially the substrate portion other than the display area. In this case, there is a disadvantage that a large warpage occurs due to sudden movement.

When such an electrode substrate is used to construct a gas discharge panel as shown in FIG. 1, the portion of the substrate exhibiting the relatively gently warped state will not be exposed to external pressure because the pressure in the gas discharge space 7 is reduced. The warpage is corrected by the spacer 8 for adjusting the gap provided inside the space, and the gap in the gas discharge space 7 becomes uniform, but the sudden warp in other parts of the substrate is not corrected, and the gap in the gas discharge space 7 is However, there was a drawback that the discharge characteristics were significantly different between the center and the periphery, making it difficult to obtain a display panel with good discharge characteristics.

An object of the present invention is to solve the above-mentioned conventional drawbacks by providing a structure in which a strained auxiliary electrode film made of the same material as the electrodes is disposed in the remaining area around the display area on which the thick transparent electrodes are formed on the glass substrate. By doing so, it is an object of the present invention to provide a polar substrate for a display panel (11) that allows the glass substrate to be warped very gently over the entire surface of the substrate.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 2 is a sectional view showing an embodiment of the electrode substrate for a display panel according to the present invention, in which 11 is a glass substrate, and 14 is a plurality of thick electrodes arranged in the display area 12 on the glass substrate 11. It is a transparent electrode, and in this embodiment (in this example, by forming a plurality of transparent electrodes 12 thickly on the glass substrate 11 in this way, the remaining area 13 around the transparent electrode 12 is not sharply warped). In order to prevent this, a strain compensation conductive film 15 made of the same material as the transparent electrode 14 is disposed in the remaining region 13. In this case, the strain compensation conductive film 15 is approximately the same as the transparent electrode 14. 1) Configuring the electrode substrate for the central display panel in this way (this eliminates the sudden warping of the substrate portions other than the display area, and The shape is extremely gently warped over all the questions, and it is possible to obtain a polar board with acceptable flatness without any problems.

In the above-mentioned embodiment, an example was explained in which the conductive film for strain compensation was arranged in a pattern shape that was substantially the same as that of the transparent electrode, but the present invention is of course limited to this.

As is clear from the above description, according to the structure of the electrode substrate for a display panel of the present invention, an electrode substrate on which a thick transparent electrode is formed and has an allowable flatness that does not hinder the construction of a display panel can be specially selected. For example, if such an electrode substrate is used to construct a gas discharge panel, it has the advantage that a gas discharge having a uniform gap width can be easily obtained in the electric space. However, it is extremely advantageous to apply not only to the above-mentioned gas discharge panel but also to various display panels.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing an example of a gas discharge panel and a cross-sectional view showing an example. In the figure, 11 is a glass substrate, 12 is a display area, and 13 is a glass substrate.
14 indicates a remaining region, 14 indicates a plurality of transparent electrodes, and 15 indicates a conductive film for strain compensation.

Claims (1)

[Claims] A display panel electrode substrate for a display panel in which a transparent electrode is formed in a display area on the substrate, and a strain compensation conductive film made of the same material as the electrode is disposed in the remaining area around the display area on the substrate. Electrode substrate for