JPH08106153A - Glass substrate with identification mark - Google Patents

Abstract

PURPOSE: To provide a glass substrate whose material or delivery end is easily identified. CONSTITUTION: This glass substrate 4 is provided with a main pattern part 2 on which fine patterns 5 and 7 whose color layers are different are formed at the center and provided with an end part 3 other than the pattern part 2 on the cut end. Besides, an identification mark 6 simultaneously formed with the pattern 5 or 7 of the pattern part 2 is given at the end part 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass substrate used as a light-transmitting glass plate for a color filter, a photomask or the like. It relates to an identifiable glass substrate.

[0002]

2. Description of the Related Art A color filter is an example of a glass substrate provided with a large number of fine light-transmitting and opaque patterns having different hues in the center. As shown in FIGS. 5 and 6, the color filter is provided in the central portion 2 of the glass plate 21.
In FIG. 7, a light-transmitting colored layer 22 including pixels of three colors of red (R), green (G), and blue (B) and a black opaque light-shielding pattern 23 are arranged in a main pattern according to a predetermined arrangement. Is formed as. In addition to the central portion 27 of the glass plate 21, there is an end portion 26 where the colored layer 22 or the light shielding pattern 23 is not applied. The end portion 26 serves as a fixed portion when the color filter is conveyed, and is cut into a fixed width when the color filter is incorporated into a product to serve as a dimension adjusting portion.

The glass plate 21 having the central portion 27 and the end portion 26 is cut off at one corner thereof in a triangular shape to provide an orientation flat (for identifying the upper and lower sides of the glass plate 21 and its material). (Orifla)
In some cases, 24 was formed. That is, orientation flat 2
No. 4 was able to be identified by the place where it was provided. For example, in creating a color filter,
When the glass substrate 21 is moved in each step, the orientation flat 24 is usefully used for preventing confusion of the glass plates 21 made of different materials, for checking the top and bottom of the glass substrate 21, or for checking the product at the time of shipping.

[0004]

However, when the orientation flat 24 is provided by cutting off one corner as described above,
There is a problem in that the trimming process using a cutting machine is required, and the number of steps for producing a color filter increases. In particular, when cutting off a plurality of corners in order to represent a plurality of identifications, the cutting off process is complicated. Also,
The orientation flat 24 can be formed only at the place where the cutting edge 25 is present, and therefore, as shown in FIG.
When manufacturing a plurality of color filters from the above, it is difficult to previously provide the orientation flat 24 for each color filter. When the glass plate 21 is cut into two glass plates from the cutting edge 25 ′, It ended up being manufactured without a color filter.

Alternatively, there is a method of handwriting information (or a mark) such as a product name on the glass substrate with a pen, but when the fine pattern of the colored layer 22 or the light shielding pattern 23 is formed on the glass substrate 21, it is washed. The information written by handwriting was easily erased when a process such as development or development was performed. Further, handwriting work on many glass substrates is time consuming.

In view of the above-mentioned drawbacks of the prior art, it is an object of the "glass substrate with an identification mark" of the present invention to easily form an identification mark for identifying a glass product.

[0007]

Therefore, in the glass substrate with an identification mark of the present invention, a large number of fine light-transmitting or opaque main patterns having different hues are provided in the center, Further, in a glass substrate having an end portion other than the main pattern portion provided at the cutting end, an identification mark which replaces the orientation flat is formed at the end portion by one color or a plurality of colors forming the pattern. Is characterized by.

[0008]

In the glass substrate with the identification mark according to the present invention, the end portion plays a role of fixing when the glass substrate is transported, and is cut into a certain width when the color filter is incorporated in the product. Plays a role of size adjustment. The identification mark allows the top and bottom of the glass substrate, the material thereof, the delivery destination, and the like to be identified at a glance.

[0009]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a "glass substrate with an identification mark" of this embodiment, which is an example in which the glass substrate is used as a color filter. In the figure, 1 is a color filter, 2 is a main pattern portion, 3 is an end portion, 4 is a glass substrate, 5 is a light shielding portion, 6 is an identification mark, and 7 is a pixel.

The color filter 1 comprises a central main pattern portion 2 provided with a large number of fine patterns having different color layers, and a glass substrate 4 having an end portion 3 where the pattern is not provided. Here, the main pattern portion 2 is provided with pixels 7 of each color of red, green and blue (hereinafter referred to as R, G and B), and further, between each pixel 7,
The light shielding portion 5 is provided. It should be noted that FIG. 1 is a simplified diagram, and pixels are usually formed of a fine pattern.

In addition, the end portion 3 refers to a portion other than the main pattern portion 2 in the color filter 1, and includes the pixel 7 and the light shielding portion 5.
It means the part where nothing is applied. And the end 3 is
When the color filter 1 is conveyed, it serves as a fixed portion, and when the color filter 1 is incorporated into a product, it serves as a dimension adjusting portion by being cut.
The identification mark 6 indicates information about the color filter 1 and is provided on the end portion 3.

The color filter 1 having the above structure is manufactured by the "color filter manufacturing method" shown in FIG.

First, a vapor deposition film 11 of chromium is provided on the upper surface of the glass substrate 4 (step 21). Then, a photo-curable photosensitive resist 12 is applied on the vapor-deposited film 11 (step 22), and then exposed through a photomask 13 described later (step 23), and the resist 12 is applied only to the portion irradiated with light. Cure.

Then, the unexposed portion of the resist 12 is removed from the glass substrate 4 by performing a developing treatment (step 24), and after the chrome etching treatment is finally performed, all the resist is peeled off. While being formed, the identification mark 6 is formed (step 25).

Next, the R.V. is filled so as to fill the gap of the formed light shielding portion 5. When the G and B pixels 7 are formed, the color filter 1 is formed. At this time, the R, G, and B pixels 7 may be formed by a general method such as a dye method, a pigment dispersion method, or a transfer method.

As shown in FIG. 3, the photomask 13 has a region 5'corresponding to the light-shielding portion 5 and a triangular region 6'corresponding to the identification mark 6 through which light is transmitted. Then, the manufactured color filter 1 becomes as shown in FIG.

That is, the identification mark 6 can be formed by the same method as a usual color filter manufacturing method. Then, with the identification mark 6, the material and thickness of the glass substrate 4,
It is possible to identify things related to the glass substrate 4, such as the delivery destination, the quality, the material forming the light shielding portion 5 and the pixel 7.

The present invention is not limited to the above embodiment. As shown in FIG. 4, a plurality of identification marks 6 manufactured by the above manufacturing method can be provided on the end portion 3. In that case, the upper right shows the delivery destination, the upper left shows the material of the glass substrate 4, and so on.
It is possible to change the identification item.

It is also possible to provide both the orientation flat 24 and the identification mark 6 by cutting. In this case, the orientation flat 24 by cutting may be used for identification of the glass substrate 4, and the identification mark 6 may be used for identification of the quality, delivery destination, and the like of the glass substrate.

Then, as shown in FIG. 4, the identification mark 6
If the end is the end 3, the location where is provided is not limited to the corner.

Further, in order to prevent peeling, the identification mark 6 is 0.5 to 2 from the glass cutting piece 8 as shown in FIG.
It is better to provide it on the inner side (on the side of the main pattern portion 2) by about mm.

Further, if the identification mark 6 is provided by using a plurality of colors forming the pattern, the number of identification items can be further increased.

Further, the identification mark 6 is not limited to the triangular shape shown in FIG. 4, but can be provided by a square or a letter.

The glass substrate 4 is a light-transmitting substrate such as a PDP electrode plate or a mask used for a large original plate, and is composed of a large number of fine patterns having different fine hues. The present invention can be applied to any substrate as long as the pattern portion is provided at the central portion and the margin portion other than the main pattern portion is provided at the end portion for transmitting light.

Further, as shown in FIG. 1, when one glass substrate 4 is cut to manufacture a plurality of glass substrates 4 ', in (step 25), in the lower left of the color filter B, that is, the color Orifla 24 of Filter A
It is also possible to form a triangular identification mark 6 at a position corresponding to the above, and in this case, a plurality of glass substrates 4 '
It is not necessary to provide an orientation flat 24 by cutting on each of the above.

[0027]

In the glass plate with the identification mark of the present invention, the identification mark is provided on the end portion other than the main pattern portion formed in the center. The top and bottom of the board, its material and thickness, delivery destination, etc. can be easily identified. Further, since the identification mark is made of one color or a plurality of colors of the pattern forming the main pattern portion, it can be provided at the same time as the step of forming one pattern, and the identification items are increased. Further, the provided identification mark does not disappear even if the process for forming the next pattern is performed on the main pattern portion. Further, the identification mark may be provided not only in the place where it is provided at the end portion but also along the cutting side as well as the corner portion of the substrate.

[Brief description of drawings]

FIG. 1 is an example of a glass substrate of the present invention.

FIG. 2 is an explanatory view showing one embodiment of a method for manufacturing a color filter according to the present invention in the order of steps.

FIG. 3 is an explanatory diagram of a mask plate used for manufacturing a color filter.

FIG. 4 is an explanatory diagram of an identification mark.

FIG. 5 is an explanatory diagram of a conventional glass substrate.

FIG. 6 is an explanatory diagram of a conventional glass substrate.

[Explanation of Codes] 1 ... Color filter 2 ... Main pattern portion 3 ... End portion 4 ... Glass substrate 5 ... Light-shielding portion 6 ... Identification mark 7 ... Pixel 8 ... Cutting piece 11 ... Evaporated film 12 ... Resist 13 ... Photomask 21 ... Glass plate 22 ... Colored layer 23 ... Light-shielding pattern 24 ... Orient flat 25 ... Cutting edge 26 ... End portion 27 ... Central portion

Claims (1)

[Claims] 1. A glass in which a large number of fine light-transmitting or opaque main patterns having different hues are provided in the center, and an end portion other than the main pattern portion is provided at a cutting end. A glass substrate with an identification mark, characterized in that an identification mark in place of the orientation flat is formed on the end portion by one or a plurality of colors forming the main pattern.