CN103698931A - Color film substrate, manufacturing method of color film substrate, liquid crystal display screen and display device - Google Patents

The TN type LCDs of take is example, as shown in Figure 1, color membrane substrates comprises:

101, and be positioned at

102 and the

103 on

101, owing to there being larger difference in thickness between

102 and

103, the air spots that can make to be formed at the oriented layer (not shown in figure 1) on

102 and

103 is smooth, like this oriented layer is being carried out after friction treatment, can make oriented layer have the inhomogeneous phenomenon of friction, thereby cause rubbing aberration problem, and, the smooth mobility of the liquid crystal contacting with oriented layer that also can cause of oriented layer air spots is poor, thereby produce the aberration problem of pressing.

A kind of color membrane substrates that the embodiment of the present invention provides, as shown in Figure 2, comprising:

1, is positioned at a plurality of

2 and a plurality of

3 on

1;

2 is arranged at the gap location between each

3, and each

2 all has overlapping region (shown in dotted line frame as shown in Figure 2) with

3;

The thickness of the gap location of

2 between

3 is greater than the thickness with the overlapping region of

3, and is less than or equal to the thickness of

3.

Fig. 2 take thickness that the thickness of the gap location of

2 between

3 equals

3 to describe as example, the thickness of the gap location of

2 between

3 can also be slightly less than the thickness of

3, at this, do not limit, the thickness of the gap location of

2 between

3 approaches the thickness of

3, and the surface of the oriented layer (not shown in Fig. 2) forming on

2 and

3 is more smooth.

The above-mentioned color membrane substrates that the embodiment of the present invention provides, owing to

2 being arranged on to the gap location between each

3, the thickness of each

2 gap location between

3 is maximum, and the thickness that is less than or equal to

3, reduced like this difference in thickness between

3 and

2, increased the flatness that is positioned at the oriented layer surface on

3 and

2, increased the mobility of liquid crystal, improved aberration and the friction aberration problem of pressing, and, each

2 all has overlapping region with

3, can also avoid the problem of colour mixture.

Particularly, in the above-mentioned color membrane substrates providing in the embodiment of the present invention, the figure of

2 can have a variety of situations, such as: as shown in Figure 2, each

2 can have notch cuttype structure with the overlapping region of

3, and the region height of

2 gap location between

3 is consistent, can guarantee to be like this formed at the surperficial flatness of the oriented layer on

2 and

3, can avoid colour mixture problem again;

2 can also be as shown in Figure 3 structure,

2 can have level and smooth slope structure with the overlapping region of

3, and the region height of

2 gap location between

3 is consistent, so also can guarantee to be formed at the surperficial flatness of the oriented layer on

2 and

3, can also avoid colour mixture problem; In addition,

2 can also be structure as shown in Figure 4 and Figure 5, also can, for other similar up-narrow and down-wide structures, at this, not limit.

Preferably, in order to guarantee the flatness on whole layer oriented layer surface, and simplify manufacture craft, in the above-mentioned color membrane substrates providing in the embodiment of the present invention, structure that can each

2 is set to identical, or, also each

2 can be set to the combination of above-mentioned various structures, at this, do not limit.

Preferably, in the above-mentioned color membrane substrates providing in the embodiment of the present invention, when the overlapping region of each

2 and

3 has notch cuttype structure, the number of plies of the ladder that the notch cuttype structure of each

2 and the overlapping region of

3 has is more, the surface that is formed at the oriented layer on

2 and

3 is more smooth, therefore, in order to guarantee that the surface that is formed at the oriented layer on

2 and

3 has higher flatness, can each

2 be set to have the notch cuttype structure of at least two-layer ladder with the overlapping region of

3, Fig. 2 take notch cuttype structure that the overlapping region of each

2 and

3 has a two-layer ladder to describe as example.

Particularly, owing to not making coat on the color membrane substrates in TN type LCDs, the surface that is positioned at the oriented layer on

2 and

3 can be extremely uneven, therefore, the above-mentioned color membrane substrates that the embodiment of the present invention provides is specially adapted to TN type LCDs, be that pixel electrode is positioned at array base palte towards a side of liquid crystal layer, public electrode is positioned at color membrane substrates towards a side of liquid crystal layer, the public electrode being positioned on

3 and

2 is also provided in the above-mentioned color membrane substrates providing in the embodiment of the present invention like this.

And, the above-mentioned color membrane substrates that the embodiment of the present invention provides is also applicable to ADS type LCDs, be that public electrode and pixel electrode are all positioned at array base palte towards a side of liquid crystal layer, like this, need to not make coat in color membrane substrates one side of ADS type LCDs, can guarantee to be formed at the flatness on the oriented layer surface on

2 and

3, so yet, can not only reduce production process, also can not affect the transmitance of ADS type LCDs.

S101, on

1, adopt shadow tone or gray tone mask plate 4 to form the figure that comprises

2;

S102, on the

1 of figure that is formed with

2, form the figure comprise

3.

Particularly, the step S101 in the said method providing in the embodiment of the present invention adopts shadow tone or gray tone mask plate 4 to form the figure that comprises

2 on

1, as shown in Figure 7, can realize in the following manner:

S201, on

1, form

5, as shown in Figure 8 a;

S202, utilize shadow tone or 4 pairs of

5 of gray tone mask plate to carry out exposure-processed, wherein, the complete shading region of shadow tone or gray tone mask plate 4 (shown in black shade region as shown in Figure 8 b) corresponding to

2 part of the gap location between each

3; The part lightproof area of shadow tone or gray tone mask plate 4 (shown in oblique line as shown in Figure 8 b and dot-hatched region) is the overlapping region with

3 corresponding to

2, as shown in Figure 8 b;

S203, the

5 after overexposure is carried out to development treatment, obtain the figure of

2, as shown in Figure 8 c.

Particularly, owing to forming the material of

2, it is photosensitive material, therefore,

5 is being carried out, in the process of composition technique, not needing to utilize photoresist, directly utilizing the figure that 4 pairs of

5 of shadow tone or gray tone mask plate expose, development treatment can obtain

2, like this, can also save the step that applies photoresist, the

5 of etching and stripping photoresist, can simplify production process, enhance productivity.

And, when the overlapping region of each

2 and

3 has notch cuttype structure, the number of plies of the ladder that this notch cuttype structure has is relevant to shadow tone or gray tone mask plate 4, can be by regulating shadow tone or gray tone mask plate 4 to realize the adjustment to the ladder number of plies.

Particularly, when the color membrane substrates that the said method providing in the embodiment of the present invention is made is applied to TN type LCDs, step S102 in the said method providing in the embodiment of the present invention specifically also comprises after forming on the

1 of figure that is formed with

2 and comprising the figure of color rete 3: on

3 and

2, form the figure that comprises public electrode.

1. a color membrane substrates, comprising: underlay substrate, be positioned at a plurality of black matrix and a plurality of color rete on described underlay substrate, and it is characterized in that;

The gap location of described black arranged in matrix between each adjacent described color rete, and described in each, black matrix and adjacent described color rete all have overlapping region;

The thickness of the gap location of described black matrix between adjacent described color rete is greater than the thickness with the overlapping region of adjacent described color rete, and is less than or equal to the thickness of described color rete.

2. color membrane substrates as claimed in claim 1, is characterized in that, described in each, the structure of black matrix is all identical.

3. color membrane substrates as claimed in claim 1, is characterized in that, described in each, the overlapping region of black matrix and adjacent described color rete has notch cuttype structure.

4. color membrane substrates as claimed in claim 3, is characterized in that, described in each, the overlapping region of black matrix and adjacent described color rete has the notch cuttype structure of at least two-layer ladder.

5. the color membrane substrates as described in claim 1-4 any one, is characterized in that, also comprises: be positioned at the public electrode on described color rete and described black matrix.

6. a LCDs, is characterized in that, comprises the color membrane substrates as described in claim 1-5 any one.

7. a display device, is characterized in that, comprises LCDs as claimed in claim 6.

8. a method for making for the color membrane substrates as described in claim 1-5 any one, is characterized in that, comprising:

On underlay substrate, adopt shadow tone or gray tone mask plate to form the figure that comprises black matrix;

On the underlay substrate of figure that is formed with described black matrix, form the figure that comprises color rete.

9. method as claimed in claim 8, is characterized in that, described shadow tone or the gray tone mask plate of adopting on underlay substrate forms the figure that comprises black matrix, specifically comprises:

On underlay substrate, form black matrix film;

Utilize shadow tone or gray tone mask plate to carry out exposure-processed to described black matrix film, wherein, the part of the complete shading region of described shadow tone or gray tone mask plate gap location between each adjacent described color rete corresponding to described black matrix; The part lightproof area of described shadow tone or gray tone mask plate is corresponding to the overlapping region of described black matrix and adjacent described color rete;

Described black matrix film after overexposure is carried out to development treatment, obtain the figure of described black matrix.

10. method as claimed in claim 8 or 9, is characterized in that, described on the underlay substrate of figure that is formed with described black matrix, form comprise the figure of color rete after, also comprise:

On described color rete and described black matrix, form the figure that comprises public electrode.