Color filter substrate, liquid crystal display panel, and display device

The present invention discloses a color filter substrate, a liquid crystal display panel, and a display device so as to lower step differences between color-resists and light shielding strips on the color filter substrate to thereby avoid non-uniform rubbing or the color-resist layer being broken while an orientation layer is being rubbed for orientation from occurring due to the step differences, thus avoiding non-uniformity of brightness and hence improving a quality of display. The color film substrates includes a plurality of color-resists arranged spaced from each other, and light shielding strips arranged in gaps between every two adjacent color-resists, wherein the respective color-resists and the light shielding strips adjacent thereto overlap in respective overlap areas each including a plurality of teeth-shaped structures, and a distance between tops of two adjacent ones of the teeth-shaped structures is less than twenty times a thickness of the light shielding strip.

CROSS-REFERENCES TO RELATED APPLICATIONS

This application claims priority to Chinese patent application No. 201410628875.6, filed Nov. 10, 2014, the content of which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present invention relates to the field of liquid crystal displays and particularly to a color filter substrate, a liquid crystal display panel, and a display device.

BACKGROUND OF THE INVENTION

A Color Filter (CF) substrate is a component necessary to a liquid crystal display panel. The CF substrate includes color-resists in red, green and blue typically made of color resins with the color-resists in the different colors being arranged spaced from each other. In order to prevent light from being leaked, light shielding strips are further arranged in gaps between the adjacent color-resists.FIG. 1illustrates a schematic diagram of the existing CF substrate in a sectional view including a base substrate1, color-resists2, and light shielding strips3which overlap with the color-resists2in respective overlap areas4; and the CF substrate is manufactured by firstly manufacturing the light shielding strips3through a first exposure operation and then manufacturing the color-resists2in red, green and blue through sequential exposure operations. However there may be differences in height h, referred to as step differences, between the tops of the color-resists2, which overlie the edges of the light shielding strips3, and the tops of the color-resists2, which do not overlie the light shielding strips3, in the overlap areas4.

The CF substrate needs to be manufactured by forming an orientation layer over the respective color-resists2above (not illustrated). In order to generate a pre-inclination angle of liquid crystal molecules in the liquid crystal display panel into which the CF substrate and an array substrate are assembled, the orientation layer on the CF substrate needs to be rubbed, but the surface of the orientation layer may be roughened due to the step differences between the color-resists2and the light shielding strips3overlapping therewith, thus resulting in non-uniform rubbing, and even breaking the color-resist layer, in respective zones with the step differences of the orientation layer being rubbed, so that the liquid crystal molecules in the liquid crystal display panel in proximity to the respective zones with the step differences cannot be aligned normally, thus resulting in non-uniform brightness and hence degrading the quality of display on the liquid crystal display panel.

BRIEF SUMMARY OF THE INVENTION

An object of the present invention is to provide a color filter substrate, a liquid crystal display panel, and a display device so as to lower step differences between color-resists and light shielding strips on the color filter substrate and to avoid non-uniform rubbing or the color-resist layer being broken while an orientation layer is being rubbed for orientation from occurring due to the step differences.

An embodiment of the present invention provides a color filter substrate including:

a plurality of color-resists arranged spaced from each other, and light shielding strips arranged in gaps between every two adjacent color-resists, wherein the respective color-resists and light shielding strips adjacent thereto overlap in respective overlap areas each including a plurality of teeth-shaped structures, and a distance between tops of every two adjacent ones of the teeth-shaped structures is less than twenty times a thickness of the light shielding strips.

Advantageous effects of the embodiment of the present invention are as follows: when the color-resists and the light shielding strips of the color filter substrate overlap in the respective areas each including the plurality of teeth-shaped structures with the distance between the tops of every two adjacent teeth-shaped structures being less than twenty times the thickness of the light shielding strips, the average step difference from a non-overlap area to an overlap area or from the overlap areas to the non-overlap areas varies slowly during an oriented rubbing process, thus making rubbing uniform and alleviating the color-resist film layer from being broken in the overlap areas; and further the brightness of display on the display device can be made uniform to thereby improve the quality of display thereof.

An embodiment of the present invention provides a liquid crystal display panel including the color filter substrate above.

An embodiment of the present invention provides a display device including the liquid crystal display panel above.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Implementations of the embodiments of the present invention will be described below in details with reference to the drawings. It shall be noted that identical or similar reference numerals will denote identical or similar elements or functionally identical or similar elements throughout the drawings. The embodiments described below with reference to the drawings are illustrative and merely intended to explain the present invention but shall not be construed as limiting the present invention.

An embodiment of the present invention provides a color filter substrate including a plurality of color-resists arranged spaced from each other, and light shielding strips arranged in gaps between every two adjacent color-resists, wherein the respective color-resists and light shielding strips adjacent thereto overlap in respective overlap areas each including a plurality of teeth-shaped structures, and the distance between the tops of every two adjacent teeth-shaped structures is less than twenty times the thickness of the light shielding strips.

In this embodiment, when the color-resists and the light shielding strips of the color filter substrate overlap in the respective areas each including the plurality of teeth-shaped structures with the distance between the tops of every two adjacent teeth-shaped structures being less than twenty times the thickness of the light shielding strips, an oriented rubbing process is performed where the average step difference from a non-overlap area to an overlap area or from the overlap areas to the non-overlap areas slowly varies, thus making rubbing uniform and alleviating the color-resist film layer from being broken in the overlap areas.

The teeth-shaped structures can be formed only on the sides of the light shielding strips or can be formed only on the edges of the color-resists or can be formed on both the sides of the light shielding strips and the sides of the color-resists. As can be appreciated, only the light shielding strips may be structured teeth-shaped or only the light color-resists may be structured teeth-shaped or both the light shielding strips and the light color-resists may be structured teeth-shaped. For the sake of a convenient description, the teeth-shaped structures will be described below taking the teeth-shaped light shielding strips as an example.

For example, a light shielding strip3illustrated inFIG. 2includes a plurality of teeth-shaped structures5which are triangles with the apex angles being sharp angles, and the distance between the tops of every two adjacent teeth-shaped structures5is less than twenty times the thickness of the light shielding strip3. In this case, the average thickness of the light shielding strip3slowly increases from the tops of the teeth-shaped structures5to the bottoms of the teeth-shaped structures5. With the light shielding strip3overlapping with a color-resist, the teeth-shaped structures5are located in the area where the light shielding strip3overlaps with the color-resist so that while the color filter substrate being rubbed in the overlap area including the teeth-shaped structures5, the average step difference from a non-overlap area to the overlap area slowly increases, and the average step difference from the overlap area to the non-overlap area slowly decreases, thus lowering a risk of the color-resist film layer being broken in the overlap area.

In another example, a light shielding strip3illustrated inFIG. 3includes a plurality of teeth-shaped structures5which are triangles with the apex angles being arc-shaped, and the distance between the tops of every two adjacent teeth-shaped structures5is less than twenty times the thickness of the light shielding strip3. In this case, the average thickness of the light shielding strip3increases slowly from the tops of the teeth-shaped structures5to the bottoms of the teeth-shaped structures5. With the light shielding strip3overlapping with a color-resist, the teeth-shaped structures5are located in the area where the light shielding strip3overlaps with the color-resist so that while the color filter substrate is being rubbed in the overlap area including the teeth-shaped structures5, the average step difference from a non-overlap area to the overlap area increases slowly, and the average step difference from the overlap area to the non-overlap area decreases slowly, thus lowering a risk of the color-resist film layer being broken in the overlap area. It shall be noted that in the light shielding strips3illustrated inFIG. 2andFIG. 3, there are typically approximately arcs instead of perfect sharp tips available at the bottoms of the adjacent teeth-shaped structures5due to an insufficient resolution of patterning in real etching.

In still another example, a light shielding strip3illustrated inFIG. 4includes a plurality of teeth-shaped structures5each including tips11and roots12, and the distance between the tops of every two adjacent teeth-shaped structures5is less than twenty times the thickness of the light shielding strip3. In this case, the average thickness of the light shielding strip3increases slowly from the tops of the teeth-shaped structures5to the bottoms of the teeth-shaped structures5. With the light shielding strip3overlapping with a color-resist, the teeth-shaped structures5are located in the area where the light shielding strip3overlaps with the color-resist so that while the color filter substrate is being rubbed in the overlap area including the teeth-shaped structures5, the average step difference from a non-overlap area to the overlap area increases slowly, and the average step difference from the overlap area to the non-overlap area decreases slowly, thus lowering a risk of the color-resist film layer being broken in the overlap area; and also a sufficient resolution of patterning being unavailable in an exposure, development or etching process due to a too short distance between the teeth-shaped structures5can be avoided since there is a preset distance L between the adjacent teeth-shaped structures5. Optionally the tips11of the teeth-shaped structures5are isosceles triangles, the roots12of the teeth-shaped structures5are rectangles or trapezoid, and the sides of the root12and the tips11are connected to each other in each teeth-shaped structure5are equal in length.

The teeth-shaped structures are formed on the color-resists in a similar pattern to the teeth-shaped structures formed on the light shielding strips illustrated inFIG. 2toFIG. 4above such that an average step difference in an area where a color-resist and a light shielding strip of the color filter substrate overlap may also be conform to that the average step difference from a non-overlap area to the overlap area increases slowly, and the average step difference from the overlap area to the non-overlap area decreases slowly, thus lowering a risk of the color-resist film layer being broken in the overlap area.

When the teeth-shaped structures5inFIG. 2toFIG. 4are applied to a color-resist or a light shielding strip, there may be various overlap structures formed by the color-resist and the light shielding strip in the color filter substrate, and particular examples thereof will be described below.

For example,FIG. 5illustrates a schematic diagram of a color filter substrate in a top view including a color-resist2, and a light shielding strip3overlapping with the color-resist2in an overlap area4. There is a plurality of the teeth-shaped structures5, as illustrated inFIG. 2, in the overlap area4formed on the sides of the light shielding strip3, and the distance between the tops of every two adjacent teeth-shaped structures5is less than twenty times the thickness of the light shielding strip. Since the average thickness of the light shielding strip3increases slowly from the tops of the teeth-shaped structures5to the bottoms of the teeth-shaped structures5in the overlap area4, and thus the average step difference of the color-resist2increases slowly from a non-overlap area to the overlap area4, the color-resist film layer can be alleviated from being broken in the overlap area4while the color filter substrate is being rubbed. Also in order to guarantee that the edges of the color-resist2can be shielded by the light shielding strip3despite a potential alignment error in the manufacturing process, the color-resist2and the light shielding strip3shall further overlap by a shielding guaranteeing area6with the width of W, which can be defined as the difference between the width of the overlap area4and the height of the teeth-shaped structures5therein perpendicular to the direction where the color-resist2and the light shielding strip3extend, and which ranges from 0.5 to 3 μm.

In another example,FIG. 6illustrates a schematic diagram of another color filter substrate in a top view including a color-resist2, and a light shielding strip3overlapping with the color-resist2in an overlap area4. There is a plurality of the teeth-shaped structures5, as illustrated inFIG. 3, in the overlap area4formed on the sides of the light shielding strip3, and the distance between the tops of every two adjacent teeth-shaped structures5is less than twenty times the thickness of the light shielding strip. Since the average thickness of the light shielding strip3increases slowly from the tops of the teeth-shaped structures5to the bottoms of the teeth-shaped structures5in the overlap area4, and thus the average step difference of the color-resist2increases slowly from a non-overlap area to the overlap area4, the color-resist film layer can be alleviated from being broken in the overlap area4while the color filter substrate is being rubbed. Also in order to guarantee that the edges of the color-resist2can be shielded by the light shielding strip3despite a potential alignment error in the manufacturing process, the color-resist2and the light shielding strip3shall further overlap by a shielding guaranteeing area6with the width of W, which can be defined as the difference between the width of the overlap area4and the height of the teeth-shaped structures5therein perpendicular to the direction where the color-resist2and the light shielding strip3extend, and which ranges from 0.5 to 3 μm. It shall be noted that in the light shielding strips3illustrated inFIG. 5andFIG. 6, there may be approximate arcs instead of perfect sharp tips available at the bottoms of the adjacent teeth-shaped structures5due to an insufficient resolution of patterning in real etching.

In still another example,FIG. 7illustrates a schematic diagram of another color filter substrate in a top view including a color-resist2, and a light shielding strip3overlapping with the color-resist2in an overlap area4. There is a plurality of the teeth-shaped structures5, as illustrated inFIG. 4, in the overlap area4formed on the sides of the light shielding strip3, and the distance between the tops of every two adjacent teeth-shaped structures5is less than twenty times the thickness of the light shielding strip. Since the average thickness of the light shielding strip3increases slowly from the tops of the teeth-shaped structures5to the bottoms of the teeth-shaped structures5in the overlap area4, and thus the average step difference of the color-resist2increases slowly from a non-overlap area to the overlap area4, the color-resist film layer can be alleviated from being broken in the overlap area4while the color filter substrate is being rubbed. Also in order to guarantee that the edges of the color-resist2can be shielded by the light shielding strip3despite a potential alignment error in the manufacturing process, the color-resist2and the light shielding strip3shall further overlap by a shielding guaranteeing area6with the width of W, which can be defined as the difference between the width of the overlap area4and the height of the teeth-shaped structures5therein perpendicular to the direction where the color-resist2and the light shielding strip3extend, and which ranges from 0.5 to 3 μm.

In still another example,FIG. 8illustrates a schematic diagram of another color filter substrate in a top view including a color-resist2, and a light shielding strip3overlapping with the color-resist2in an overlap area4. There is a plurality of the teeth-shaped structures5, as illustrated inFIG. 2, in the overlap area4formed on the sides of the color-resist2, and the distance between the tops of every two adjacent teeth-shaped structures5is less than twenty times the thickness of the light shielding strip. Since the average thickness of the color-resist2increases slowly from the tops of the teeth-shaped structures5to the bottoms of the teeth-shaped structures5in the overlap area4, and thus the average step difference of the color-resist2increases slowly from a non-overlap area to the overlap area4, the color-resist film layer can be alleviated from being broken in the overlap area4while the color filter substrate is being rubbed. Also in order to guarantee that the teeth-shaped structures5on the sides of the color-resist2can be shielded by the light shielding strip3despite a potential alignment error in the manufacturing process, the color-resist2and the light shielding strip3shall further overlap by a shielding guaranteeing area6with the width of W, which can be defined as the difference between the width of the overlap area4and the height of the teeth-shaped structures5therein perpendicular to the direction where the color-resist2and the light shielding strip3extend, and which ranges from 0.5 to 3 μm. In this embodiment, the teeth-shaped structures5on the adjacent sides of two color-resists2overlapping with the same light shielding strip3are arranged in a staggered order and engaged into each other by a depth D less than or equal to the height H of the teeth-shaped structures5and optionally less than half the height H of the teeth-shaped structures5.

In the light shielding strips3of the color filter substrate illustrated inFIG. 5toFIG. 7above, the teeth-shaped structures5on both sides of the light shielding strips3are arranged to have mirror symmetry with respect to the central axis in the direction where the light shielding strips3extend taken as the symmetry axis, and in order to enable the thickness of the entire light shielding strips3to be distributed more linearly smoothly, the teeth-shaped structures5on both sides of the light shielding strips3can be arranged to be in minor dissymmetry with respect to the central axis in the direction where the light shielding strips extend taken as the symmetry axis. Particular examples thereof will be described below.

In still another example,FIG. 9illustrates a schematic diagram of another color filter substrate in a top view including a color-resist2, and a light shielding strip3overlapping with the color-resist2in an overlap area4. There are a plurality of the teeth-shaped structures5, as illustrated inFIG. 3, in the overlap area4formed on the sides of the light shielding strip3, and the teeth-shaped structures5on both the sides of the light shielding strip3are arranged to be in minor dissymmetry with respect to the central axis M in the direction where the light shielding strip3extends taken as the symmetry axis, and the distance between the tops of every two adjacent teeth-shaped structures5on the same side is less than twenty times the thickness of the light shielding strip. More particularly the teeth-shaped structures5on both sides of the light shielding strip3will not coincide when being folded along the central axis M of the light shielding strip3. Since the average thickness of the light shielding strip3increases slowly from the tops of the teeth-shaped structures5to the bottoms of the teeth-shaped structures5in the overlap area4, and thus the average step difference of the color-resist2increases slowly from a non-overlap area to the overlap area4, the color-resist film layer can be alleviated from being broken in the overlap area4while the color filter substrate is being rubbed; furthermore the teeth-shaped structures5on both sides of the light shielding strip3are arranged to be in mirror dissymmetry with respect to the central axis M in the direction where the light shielding strip3extends taken as the symmetry axis so that there will be a more satisfactory width and ideal strength of the light shielding strip3other than the teeth-shaped structures5than the light shielding strip3with the symmetric teeth-shaped structures5, thus avoiding a risk of being broken; and still furthermore when the rubbing direction R is perpendicular to the central axis M or there is an angle of more than zero degrees between the rubbing direction and the central axis M, since the teeth-shaped structures5on both sides of the light shielding strip3are arranged to be in minor dissymmetry with respect to the central axis M in the direction where the light shielding strip3extends taken as the symmetry axis, the teeth-shaped structures5can be distributed more uniformly in the rubbing direction R, so that the step difference between the overlap area4as a whole and the non-overlap area can vary more smoothly, and also significantly varying differences in step difference between different locations in the overlap area4and the non-overlap area due to a varying thickness of the color-resist may be lowered. Also in order to guarantee that the edges of the color-resist2can be shielded by the light shielding strip3despite a potential alignment error in the manufacturing process, the color-resist2and the light shielding strip3shall further overlap by a shielding guaranteeing area6with the width of W, which can be defined as the difference between the width of the overlap area4and the height of the teeth-shaped structures5therein perpendicular to the direction where the color-resist2and the light shielding strip3extend, and which ranges from 0.5 to 3 μm.

The color filter substrate illustrated inFIG. 9can be regarded as a variant of the color filter substrate illustrated inFIG. 5and the similar variant of the color filter substrates illustrated inFIG. 6andFIG. 7can be performed in the same principle to improve the trend in thickness of the light shielding strips3, where a repeated description thereof will be omitted here.

In still another example,FIG. 10illustrates a schematic diagram of another color filter substrate in a top view, which is a color filter substrate including a color-resist and a light shielding strip, to both of which the teeth-shaped structures5illustrated inFIG. 2are applied. The color filter substrate includes a color-resist2, and a light shielding strip3overlapping with the color-resist2in an overlap area4. There are a plurality of the teeth-shaped structures5, as illustrated inFIG. 3, in the overlap area4formed respectively on the sides of the color-resist2and the sides of the light shielding strip3, and the teeth-shaped structures5on both the sides of the light shielding strip3are arranged to be in mirror dissymmetry with respect to the central axis in the direction where the light shielding strip3extends taken as the symmetry axis, and more particularly the teeth-shaped structures5on both sides of the light shielding strip3will not coincide when being folded along the central axis M of the light shielding strip3. The distance between the tops of every two adjacent teeth-shaped structures5on the same side is less than twenty times the thickness of the light shielding strip. Since the average thickness of the light shielding strip3increases slowly from the tops of the teeth-shaped structures5to the bottoms of the teeth-shaped structures5in the overlap area4, and thus the average step difference of the color-resist2increases slowly from a non-overlap area to the overlap area4, the color-resist film layer can be alleviated from being broken in the overlap area4while the color filter substrate is being rubbed; furthermore the teeth-shaped structures5on both sides of the light shielding strip3are arranged to be in minor dissymmetry with respect to the central axis M in the direction where the light shielding strip3extends taken as the symmetry axis so that there will be a more satisfactory width and ideal strength of the light shielding strip3other than the teeth-shaped structures5than the light shielding strip3with the symmetric teeth-shaped structures5, thus avoiding a risk of being broken; and still furthermore when the rubbing direction R is perpendicular to the central axis M or there is an angle of more than zero degrees between the rubbing direction and the central axis M, since the teeth-shaped structures5on both sides of the light shielding strip3are arranged to be in mirror dissymmetry with respect to the central axis M in the direction where the light shielding strip3extends taken as the symmetry axis, the teeth-shaped structures5can be distributed more uniformly in the rubbing direction R, so that the step difference between the overlap area4as a whole and the non-overlap area can vary more smoothly, and also significantly varying differences in step difference between different locations in the overlap area4and the non-overlap area due to a varying thickness of the color-resist may be lowered. Also in order to guarantee that the bottom of the teeth-shaped structures5on the sides of the color-resist2can be shielded by the light shielding strip3despite a potential alignment error in the manufacturing process, the color-resist2and the light shielding strip3shall further overlap by a shielding guaranteeing area6. In a schematic diagram of a shielding guaranteeing area6in a partially enlarged view as illustrated inFIG. 11, the width W of the shielding guaranteeing area6can be defined as a section width of a strip-shaped stack layer formed by the teeth-shaped structures5of the color-resist2and the teeth-shaped structures5of the light shielding strip3, and the width W of the shielding guaranteeing area6ranges from 0.5 to 3 μm.

The teeth-shaped structures5in the respective embodiments above are formed on the “sides” of the color-resist2and/or the light shielding strip3, which can be both the sides of the light shielding strip3or one side of the color-resist2(the side thereof overlapping with the light shielding strip3) as needed in practical application.

In order to further alleviate a damage to the color-resist film layer during rubbing, the angle between a straight line and a rubbing direction of a color film substrate can be further made less than or equal to 10°, the straight line is from the acmes of the respective teeth-shaped structure5in the overlap area4where the color-resist2and the light shielding strip3overlap in the color film substrate above to the middle points of bottoms thereof. Referring to a light shielding strip3illustrated inFIG. 12, there is an angle θ less than or equal to 10° between a straight line and the direction R of the color film substrate, the straight line is from the acmes of the teeth-shaped structure5on both sides thereof to the middle points of bottoms thereof, and this design can maximally alleviate a damage due to rubbing to thereby avoid considerable chipping as a result of rubbing from occurring.

Advantageous effects of the respective embodiments above of the present invention are as follows: when the color-resists and the light shielding strips of the color filter substrate overlap in the respective areas each including the plurality of teeth-shaped structures with the distance between the tops of every two adjacent teeth-shaped structures being less than twenty times the thickness of the light shielding strips, the average step difference from a non-overlap area to an overlap area or from the overlap areas to the non-overlap areas varies slowly during an oriented rubbing process, thus making rubbing uniform and alleviating the color-resist film layer from being broken in the overlap areas; and further the brightness of display on the display device can be made uniform to thereby improve the quality of display thereof.

Referring toFIG. 13, a liquid crystal display panel10according to an embodiment of the present invention is provided, which includes the color filter substrate according to any one of the embodiments above, an opposite substrate (not illustrated), and a liquid crystal layer (not illustrated) between the color filter substrate and the opposite substrate, and the color filter substrate includes a base substrate1and color-resists2, and light shielding strips3, formed sequentially on the base substrate1. It shall be noted that for the liquid crystal display panel10, the base substrate1is arranged proximate to the visible side of the liquid crystal display panel10, and the color-resists2and the light shielding strips3are arranged on the side of the base substrate1facing a liquid crystal layer, so the color-resists2are illustrated in dotted lines. In this embodiment, the color-resists2and the light shielding strips3are illustrated as being arranged on the liquid crystal display panel10in the column direction, but they can alternatively be arranged in the row direction or in both the row direction and the column direction, and the embodiment of the present invention will not be limited thereto.

For the sake of clarity the area where the light shielding strip3and the color-resist2overlap, the schematic enlarged diagram of the portion thereof at the dotted line31illustrated inFIG. 14(a schematic diagram of the area where the light shielding strip3and the color-resist2overlap in a partially enlarged view) will be described as an example: the light shielding strip3and the color-resist2overlap in the overlap area4. There is a plurality of the teeth-shaped structures5, as illustrated inFIG. 2, in the overlap area4formed on the sides of the light shielding strip3, and the distance between the tops of every two adjacent teeth-shaped structures5is less than twenty times the thickness of the light shielding strip. Since the average thickness of the light shielding strip3increases slowly from the tops of the teeth-shaped structures5to the bottoms of the teeth-shaped structures5in the overlap area4, and thus the average step difference of the color-resist2increases slowly from a non-overlap area to the overlap area4, the color-resist film layer can be alleviated from being broken in the overlap area4while the color filter substrate is being rubbed. Also in order to guarantee that the edges of the color-resist2can be shielded by the light shielding strip3despite a potential alignment error in the manufacturing process, the color-resist2and the light shielding strip3shall further overlap by a shielding guaranteeing area6with the width of W, which can be defined as the difference between the width of the overlap area4and the height of the teeth-shaped structures5therein perpendicular to the direction where the color-resist2and the light shielding strip3extend, and which ranges from 0.5 to 3 μm. The overlap structure formed by the light shielding strip3and the color-resist2as illustrated in the schematic enlargement diagram drawn in the dotted line31can be implemented as the overlap structure formed by the light shielding strip3and the color-resist2in the color filter substrate as illustrated inFIG. 5or of course can be implemented as the overlap structure formed by the light shielding strip3and the color-resist2in the color filter substrate as illustrated in any one ofFIG. 6toFIG. 10, and in the meantime the liquid crystal display panel can further include an array substrate, a liquid crystal layer, etc., shielded by the color filter substrate, where a repeated description thereof will be omitted here.

Advantageous effects of the embodiment of the present invention are as follows: when the color-resists and the light shielding strips of the color filter substrate overlap in the respective areas each including the plurality of teeth-shaped structures with the distance between the tops of every two adjacent teeth-shaped structures being less than twenty times the thickness of the light shielding strips, the average step difference from a non-overlap area to an overlap area or from the overlap areas to the non-overlap areas varies slowly during an oriented rubbing process, thus making rubbing uniform and alleviating the color-resist film layer from being broken in the overlap areas; and further the brightness of display on the display device can be made uniform to thereby improve the quality of display thereof.

Referring toFIG. 15, a display device twenty according to an embodiment of the present invention is provided, which includes a frame21and the liquid crystal display panel10according to the embodiment above, where the liquid crystal display panel10includes the color filter substrate according to any one of the embodiments above, an opposite substrate (not illustrated), and a liquid crystal layer (not illustrated) between the color filter substrate and the opposite substrate. The color filter substrate includes a base substrate1, and color-resists2, and light shielding strips3, formed sequentially on the base substrate1. It shall be noted that for the liquid crystal display panel10, the base substrate1is arranged proximate to the visible side of the liquid crystal display panel10, and the color-resists2and the light shielding strips3are arranged on the side of the base substrate1facing a liquid crystal layer, so the base substrate11and the color-resists2are illustrated in dotted lines.FIG. 14illustrates a schematic enlarged diagram of the portion drawn in the dotted line31illustrated inFIG. 15, where a repeated description thereof will be omitted here.

Advantageous effects of the embodiment of the present invention are as follows: when the color-resists and the light shielding strips of the color filter substrate overlap in the respective areas each including the plurality of teeth-shaped structures with the distance between the tops of every two adjacent teeth-shaped structures being less than twenty times the thickness of the light shielding strips, the average step difference from a non-overlap area to an overlap area or from the overlap areas to the non-overlap areas varies slowly during an oriented rubbing process, thus making rubbing uniform and alleviating the color-resist film layer from being broken in the overlap areas; and further the brightness of display on the display device can be made uniform to thereby improve the quality of display thereof.

Those of skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus the present invention is also intended to encompass these modifications and variations thereto so long as the modifications and variations come into the scope of the claims appended to the present invention and their equivalents.