CN1333273C

CN1333273C - Black matrix layout method

Info

Publication number: CN1333273C
Application number: CNB2005100073997A
Authority: CN
Inventors: 林汉昌; 吴法震
Original assignee: Wintek Corp
Current assignee: Wintek Corp
Priority date: 2005-02-28
Filing date: 2005-02-28
Publication date: 2007-08-22
Anticipated expiration: 2025-02-28
Also published as: CN1664627A

Abstract

The present invention discloses a black matrix layout method which comprises the following steps: forming a frame-shaped black matrix at the periphery of a picture element; laying two strip-shaped black matrixes in the rectangular picture element; dividing a picture element region into three sub picture element regions with the same area. The two strip-shaped black matrixes are vertically connected and are respectively parallel to a long side and a short side of the rectangular picture element. The length of the black matrix which is vertical to the short side is smaller than the length of the short side of the rectangular picture element. The present invention can effectively increase the total length of the black matrix in order to improve aperture efficiency, and has the advantages of low manufacture cost and good display effect.

Description

Black matrix layout method

Technical field

The present invention is that the technical field of the color filter film used of relevant a kind of display belongs to the field, refers to a kind of black matrix layout method that can improve the aperture opening ratio of sub-pixel especially.

Background technology

Press, black matrix" is arranged in each picture element of color filter film, its major function is the chromatic photoresist colour mixture that is used for preventing each sub-picture element R, G, B, to improve sub-picture element R, G, B color contrast value, in general, the black matrix" area is littler, and the aperture opening ratio of sub-picture element is just higher, and can make the transmittance of display high more, and then make whole picture display quality better.

The image element structure of traditional color filter film is as shown in Figure 3, each picture element 8 is formed by the sub-picture element 81,82,83 of red (R), green (G), blue (B) three kinds of colors, be equipped with an electrode 84,85,86 in each sub-picture element 81,82,83, and one black matrix" 9 be set respectively in each sub-picture element 81,82,83 periphery.

In picture element 8 structures, electrode 84,85,86 with black matrix" 9 can take each sub-picture element 81,82,83 certain areas, left part is each sub-picture element 81 after deducting these occupied areas, 82,83 aperture opening ratio, with a picture element that is of a size of 269um * 269um is example, the width of black matrix" 9 is about 20um, therefore the length of sub-picture element is 229um, width is 63um, that is the length that is arranged in two black matrix"s of picture element is 229um, generally speaking, its aperture opening ratio of aforesaid picture element 8 structures only has about 40% approximately, but because of electrode 84,85,86 area occupied is malleable not, and the difficult reduction again of the width of black matrix" 9, so the mode of industry desire increase aperture opening ratio just can only be improved with the layout type of black matrix".

See also Fig. 4 A and Fig. 4 B, it is a kind of existing three-layer type image element structure, it mainly is that the chromatic photoresist that red (R), green (G), blue (B) three kinds of colors are set respectively on three-layer thin-film 71,72,73 forms sub-picture element 74,75,76, be equipped with an electrode 77,78,79 in each sub-picture element 74,75,76, and on the dual-side of each film 71,72,73, black matrix" 9 is set, then that three-layer thin-film 71,72,73 contrapositions are overlapping, and form a picture element 7, shown in Fig. 4 B.

So the black matrix layout mode has effectively reduced the area occupied of black matrix" really, and aperture opening ratio is promoted to about 60%, with the small-medium size module is example, because about the generally only about 60um of width of each sub-picture element 74,75,76, the width of black matrix" 9 more only about 20um, therefore exists three-layer thin-film 71,72,73 contrapositions and is difficult for problem accurately, moreover, this mode need consume nearly three times man-hour, material, and its cost of manufacture is high, therefore still has necessity of being improved.

In addition, sub-picture element in each picture element is a parallel arranged, therefore the sub-picture element of same color can be listed in in the delegation in the picture of being made up of most picture elements, as shown in Figure 5, in such event, the strip sense that produces the lines roomage response is just arranged when show image, and influenced the fineness of picture, shown in the picture shown in Fig. 6 B.

So aforesaid black matrix layout mode is real in addition improved necessity again, in the hope of taking into account aperture opening ratio, manufacturing cost and display effect.

Summary of the invention

The objective of the invention is to improve deficiency of the prior art, a kind of black matrix layout method is provided, it can obtain bigger aperture opening ratio and manufacturing cost is lower, it is simple and convenient to make.

Black matrix layout method provided by the invention is that the black matrix" with two vertical connections is laid in the picture element of rectangle, the rectangle picture element region is divided into the sub-picture element of the rectangle zone that three areas equate, and two the length of black matrix" all is not more than the length of short sides of rectangle, and can effectively reduce the total length of black matrix", to reach the effect that improves aperture opening ratio.

A kind of black matrix layout method, it is the black matrix" that forms a shaped as frame in rectangle picture element periphery, and be laid in the picture element of rectangle with the black matrix" of two vertical bar shapes, and picture element region is divided into three sub-picture element zones, article two, black matrix" is respectively with the long limit that is parallel to the rectangle picture element and the form setting of minor face, and two black matrix" is a vertical connection, and is less than length of short sides perpendicular to the length of the black matrix" of minor face.

For reaching aforementioned purpose, black matrix layout method of the present invention is that the black matrix" with two vertical bar shapes is laid in the picture element of rectangle, picture element region is divided into the sub-picture element zone that three areas equate, article two, black matrix" is respectively with the length limit that is parallel to the rectangle picture element and the form setting of minor face, and two black matrix" is a vertical connection, and the length of two black matrix"s all is not more than the length of short sides of rectangle.

Description of drawings

The invention will be further described below in conjunction with accompanying drawing.

Fig. 1 is a black matrix layout aspect synoptic diagram of the present invention;

Fig. 2 is the aspect synoptic diagram that the sub-picture element of each color distributes in the picture of being formed with the picture element after the method layout of the present invention;

Fig. 3 is the structural representation of existing a kind of picture element

Fig. 4 A is each layer film structural representation of existing another kind of three-layer type picture element;

Fig. 4 B is the structural representation of existing three-layer type picture element;

Fig. 5 is the aspect synoptic diagram that the sub-picture element of each color distributes in the picture formed of existing picture element;

Fig. 6 A is to use the picture of the image of black matrix layout method demonstration of the present invention;

Fig. 6 B is to use the picture of the image of existing black matrix layout method demonstration.

Embodiment

See also Fig. 1 and Fig. 2, the black matrix layout method of present embodiment, it is the black matrix" F that forms a shaped as frame in rectangle picture element 1 periphery, and with in the black matrix" V of two vertical bar shapes, the picture element 1 that L is laid in rectangle, and rectangle picture element 1 is divided into three sub-picture element region R, G, B that area is suitable, article two, black matrix" V, L are respectively with the long limit B that is parallel to rectangle picture element 1 and the form setting of minor face A, and two black matrix" V, L are vertical connections, and the length of two black matrix" V, L all is not more than the minor face A length of side of rectangle.And wherein sub-picture element region R, G, B are the photoresistance settings that supplies red, blue, green three kinds of colors respectively, and are respectively equipped with an electrode 11,12,13 in each sub-picture element region R, G, B.

Because the length of two black matrix" V, L all is not more than the minor face A length of side of rectangle, can mathematical expression be expressed as (V+L)＜2A, that is the L total length among two black matrix" V, the L must be less than the minor face A length of side among the present invention.With a picture element that is of a size of 269um * 269um is example, the width of black matrix" 9 is 20um, then the length of black matrix" V is about 229um, and for making three sub-picture element R, G, the area of B is suitable, the width of sub-picture element R is about 65.5um, in other words, the only about 143.5um of the length of black matrix" L deducts the shaped as frame black matrix" of peripheral identical size and disregards, and compares with prior art, two black matrix" length shown in Fig. 3 are 229um, total length reaches 458um, and the total length of the present invention's black matrix" is 372.5um only, and the length of black matrix" reduces about 19%, and the part that reduces is the part that aperture opening ratio increases, and can arrive the effectiveness that improves aperture opening ratio.

Moreover, of the present invention cheap for manufacturing cost, and do not have the problem that has the contraposition difficulty in the prior art of three-layer type film.

See also Fig. 2, picture element 1 neutron picture element region R, G, the B arrangement triangular in shape approximately made from black matrix layout method of the present invention, therefore the picture that is rearranged by most picture elements can improve the strip sense of traditional lines roomage response when show image, and the fineness of picture is promoted, shown in the picture as shown in Figure 6A.

Generally speaking, black matrix layout method of the present invention can shorten the total length of black matrix" really, the total area of black matrix" is reduced, and can improve aperture opening ratio, and have effect cheap for manufacturing cost and that display effect is good concurrently.

The above is specific embodiments of the invention and the know-why used, and is any based on the equivalent transformation on the technical solution of the present invention basis, all belongs within the protection domain of the present invention.

Claims

1, a kind of black matrix layout method, it is the black matrix" that forms a shaped as frame in rectangle picture element periphery, and be laid in the picture element of rectangle with the black matrix" of two vertical bar shapes, and picture element region is divided into three sub-picture element zones, article two, black matrix" is respectively with the long limit that is parallel to the rectangle picture element and the form setting of minor face, and two black matrix" is a vertical connection, and is less than length of short sides perpendicular to the length of the black matrix" of minor face.

2, according to the described black matrix layout method of claim 1, it is characterized in that: wherein the area in three sub-picture element zones levels off to identical.