JP2923990B2 - Method of manufacturing flat display panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] The present invention relates to a method for manufacturing a flat display panel such as a gas discharge panel. In the manufacture of a display panel including an insulating substrate, when forming the display electrodes on the surface of the insulating substrate, the coordinates for detecting the positions of the substrate surface in the X direction and the Y direction on the periphery of the substrate outside the display area are displayed. A configuration including a step of forming the display electrode together with a thick film or thin film technique is adopted.

[Industrial applications]

The present invention relates to a method for manufacturing a flat panel display panel, and more particularly, to a method for manufacturing a panel for facilitating inspection work such as disconnection or short circuit of a display electrode formed on an insulating substrate.

As a flat panel display panel, a gas discharge panel, a liquid crystal panel, an EL panel and the like are well known.

A glass substrate on which display electrodes are formed is used for the production of these panels, but disconnection and short-circuit inspection of the electrode pattern are indispensable in quality inspection of the electrode formation substrate.
It is desired to develop a method for facilitating the inspection work.

[Conventional technology]

FIG. 3 is a view conceptually showing an example of the configuration of a gas discharge panel, wherein 1 and 2 are glass substrates, and 3 and 4 are display electrodes.

The pair of glass substrates 1 and 2 are opposed to each other with a predetermined space (gas discharge space) therebetween, and a pair of display electrodes 3 and 4 are formed on the opposed substrate surfaces. Layer and a surface protective layer. The periphery of the substrate is sealed by a frit material (not shown), and a discharge gas is sealed in the sealed gas discharge space.

In manufacturing the gas discharge panel configured as described above, first, an electrode pattern is formed on the surface of each glass substrate by a thick film or thin film technique. Next, the formed electrode pattern is inspected for disconnection, short circuit, etc., and a dielectric layer and a surface protection layer are sequentially formed on the electrode-formed substrate that has passed the inspection by using a thick film or thin film technique. Note that, for the electrode-formed substrate on which a disconnection or the like is detected, a mark indicating the defective portion is written on the back surface of the substrate with a magic pen or the like, and then repaired.

Thereafter, the electrode forming substrates are arranged to face each other so that the display electrodes intersect, and a spacer is interposed between the substrates in a display region D portion, and a frit material is interposed in a peripheral portion of the substrate outside the display region. Then, the frit material is heated and melted to be integrated.

Then, a discharge gas is sealed in a gas discharge space formed between the substrates, and an aging process is further performed to complete a display panel.

[Problems to be solved by the invention]

As described above, in the conventional electrode pattern inspection, a defective portion such as a disconnection cannot be positioned without marking.
This marking operation was not only easy but also troublesome. Further, there is a problem that it is difficult to mechanize the repair work of the defective portion because the defective portion can be recognized only visually.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method of manufacturing a flat panel display panel which facilitates recognition of a defective portion during inspection of an electrode pattern and facilitates mechanization of a repair operation from the above-described conventional situation.

[Means for solving the problem]

In order to achieve the above object, in the method of manufacturing a display panel according to the present invention, when forming a display electrode on the surface of the insulating substrate, the positions of the substrate surface in the X direction and the Y direction are located around the substrate outside the display area. It is characterized in that coordinates to be detected are formed together with the display electrodes by a thick film or thin film technique.

[Action]

Now, assuming that a part of the electrode pattern formed on the insulating substrate is broken, the broken part can be easily located based on the X-direction and Y-direction coordinates formed on the periphery of the substrate. It is also possible to automatically position the mechanized repair tool at the defective location based on the coordinate information.

〔Example〕

FIG. 1 is a plan view of an electrode forming substrate 11 on one side according to an embodiment of the present invention.
Is one display electrode (X electrode), 14 is the X direction coordinate, 15 is Y
Directional coordinates. Note that a scale interval of about 1 cm is sufficient.

The display electrode 13 and the coordinates 14 and 15 are simultaneously formed on the surface of the glass substrate 12 in the electrode forming step. That is, FIG. 2 is a diagram showing a method of forming the same. In this figure, 21 is a photomask for patterning electrodes and coordinates, P1 is a pattern for display electrodes, P2 is a pattern for X-direction coordinates, and P3 is a pattern for Y-direction coordinates.

After exposing the photomask 21 on the glass substrate 12 having a resist formed on the entire surface, an electrode material is applied to the substrate surface by, for example, a vapor deposition method, and the respective patterns P1, P2, P3
The X electrode 13 and the X-direction coordinate 14 and the Y-direction coordinate 15 according to the above are formed.

Since there is no deviation in the positional relationship between the electrode and the coordinates formed in this way, highly accurate defective portion positioning can be performed.

After the panel assembly, the X-direction coordinates 14 and the Y-direction coordinates 15 are usually removed by cutting off the peripheral portion of the substrate.

〔The invention's effect〕

As described above, according to the present invention, the coordinates for position detection on the substrate are formed at the same time when the electrodes are formed, and the defective portions at the time of the electrode pattern inspection can be easily recognized based on the coordinates. Further, it is possible to expect an effect that the electrode pattern repair work can be easily automated.

[Brief description of the drawings]

FIG. 1 is a plan view showing an electrode forming substrate on one side according to an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the formation of the electrode forming substrate of FIG. 1, and FIG. It is a figure which shows an example structure notionally. 1 and 2, 11 is an electrode forming substrate, 12 is a glass substrate, 13 is a display electrode, 14 is an X direction coordinate, 15 is a Y direction coordinate, D is a display area, P1 is a display electrode pattern, and P2 is X A directional coordinate pattern, P3 indicates a Y-directional coordinate pattern.

Claims (1)

(57) [Claims] In a method of manufacturing a display panel including an insulating substrate having display electrodes formed thereon, when forming the display electrodes on the surface of the insulating substrate, the X of the substrate surface is formed on a peripheral portion of the substrate outside a display area. A method of manufacturing a flat panel display panel, comprising forming coordinates for detecting a position in the direction and the Y direction together with the display electrode by a thick film or thin film technique.