CN108445670A - Display device - Google Patents

Abstract

The invention relates to a display device, which comprises a first substrate and a second substrate. The first substrate is provided with a first color resistor and a second color resistor, and the height of the first color resistor is smaller than that of the second color resistor; the second substrate is provided with a metal shielding layer and a first electrode layer, the first electrode layer partially covers the metal shielding layer, the second substrate is provided with a first sub-pixel region and a second sub-pixel region, the metal shielding layer is provided with a first shielding strip and a second shielding strip which are oppositely arranged in the first sub-pixel region, a first overlapping area is formed between the first electrode layer and the first shielding strip as defined as S1, a third shielding strip and a fourth shielding strip which are oppositely arranged in the second sub-pixel region are arranged in the metal shielding layer, a second overlapping area is formed between the first electrode layer and the third shielding strip as well as the fourth shielding strip as defined as S2, wherein S1 is less than S2. The invention ensures that the horizontal visual angle and the vertical visual angle of the second sub-pixel area are symmetrical, and improves the display quality of the picture.

Description

display device

technical field

The present invention relates to a display device, in particular to a display device capable of improving picture quality.

Background technique

Generally, a display panel has a color filter substrate, an array substrate, and a liquid crystal layer located between the color filter substrate and the array substrate, which are attached to each other. The color filter substrate and the array substrate are correspondingly provided with red sub-pixel regions, green sub-pixel regions and blue sub-pixel regions distributed in an array. The red sub-pixel area, the green sub-pixel area and the blue sub-pixel area on the color filter substrate are respectively provided with red color resistance, green color resistance and blue color resistance. The array substrate is provided with a metal shielding layer and a first electrode layer. Taking the red sub-pixel region as an example, the metal shielding layer has two shielding strips arranged opposite to each other in the red sub-pixel region, and the first electrode layer partially covers the above two on the masking strip. The arrangement of the green sub-pixel area and the blue sub-pixel area is similar to that of the red sub-pixel area, and the overlapping areas of the first electrode layer and the shielding strips in each sub-pixel area are equal. In actual operation, the height of the blue color resistance will be greater than the height of the red color resistance and the green color resistance, so that the gap between the color filter substrate and the array substrate in the blue sub-pixel area (that is, the apex of the element on the color filter substrate to the array The distance between the vertices of the components on the substrate) is smaller than that of other regions. Under the condition of applying the same voltage, the electric field here is different from other regions, so that the Phi angle of the liquid crystal molecules here is not 45 degrees, and the Phi angle is 45 degrees. It means that the included angle between the horizontal direction and the normal direction of the display panel is 45°. Please refer to Figure 1. Figure 1 is a graph showing the relationship between the gray scale and brightness of each sub-pixel in the display panel in the prior art. It can be seen from Figure 1 that the difference between the vertical viewing angle and the horizontal viewing angle of other sub-pixels is small, while the blue sub-pixel The relationship between the grayscale and brightness of the vertical viewing angle of the pixel is quite different from the relationship between the grayscale and brightness of the horizontal viewing angle of the blue sub-pixel, that is, the horizontal viewing angle and vertical viewing angle of the blue sub-pixel area are asymmetrical, resulting in a picture that is viewed from the horizontal viewing angle. There is a contrast with the picture observed from the vertical viewing angle, and the display quality of the picture is not good.

Contents of the invention

The object of the present invention is to provide a display device, which makes the horizontal viewing angle and the vertical viewing angle of each sub-pixel symmetrical, and improves the picture quality.

In order to achieve the above object, the present invention proposes a display device, comprising: a first substrate and a second substrate. The first substrate is provided with a first color resistance and a second color resistance, and in the first direction, the height of the first color resistance is smaller than the height of the second color resistance; the second substrate is provided with a metal shielding layer and a first electrode layer , the first electrode layer partially covers the metal shielding layer, the second substrate has a first sub-pixel area and a second sub-pixel area corresponding to the first color resistance and the second color resistance, respectively, and the metal shielding The layer has a first shielding strip and a second shielding strip oppositely arranged in the first sub-pixel area, and a first overlapping area between the first electrode layer and the first shielding strip and the second shielding strip is defined as S1 The metal shielding layer has a third shielding strip and a fourth shielding strip opposite to each other in the second sub-pixel area, and the first electrode layer has a second overlapping area with the third shielding strip and the fourth shielding strip , defined as S2, where S1<S2.

As an optional technical solution, the first color resistance is a green color resistance, and the second color resistance is a blue color resistance.

As an optional technical solution, a third color resistance is also provided on the first substrate, the height of the third color resistance is equal to the height of the first color resistance, and the second substrate has a third color resistance corresponding to the third color resistance. In the sub-pixel area, the metal shielding layer has a fifth shielding strip and a sixth shielding strip opposite to the third sub-pixel area, and a third electrode layer is formed between the first electrode layer and the fifth shielding strip and the sixth shielding strip. The overlapping area is defined as S3, where S3=S1.

As an optional technical solution, the third color resistance is a red color resistance.

As an optional technical solution, the metal shielding layer also has a first transverse keel and a first vertical keel distributed in a cross in the first sub-pixel area, and the first transverse keel and the first longitudinal keel are located at the first between the shielding strip and the second shielding strip, and the first electrode layer covers the first transverse keel and the first longitudinal keel, the total area of the first transverse keel and the first longitudinal keel is the first keel area, Defined as A1, the metal shielding layer also has a second horizontal keel and a second vertical keel distributed in a cross in the second sub-pixel area, and the second horizontal keel and the second vertical keel are located between the third shielding bar and the second vertical keel. Between the fourth shielding strips, and the first electrode layer covers the second transverse keel and the second longitudinal keel, the total area of the second transverse keel and the second longitudinal keel is the area of the second keel, defined as A2 , where, S1+A1=S2+A2.

As an optional technical solution, there are grid lines on the second substrate, the grid lines extend along the second direction, and the first shielding strip, the second shielding strip, the third shielding strip and the fourth shielding strip extend along the second direction. Extending in three directions, the first direction, the second direction and the third direction are perpendicular to each other, and the overlapping width of the first electrode layer, the first shielding strip and the second shielding strip in the second direction is equal to The first overlapping width is defined as W1, the overlapping width of the first electrode layer, the third shielding strip and the fourth shielding strip in the second direction is the second overlapping width, defined as W2, where 0.23 um<W2-W1<0.58um.

As an optional technical solution, the first electrode layer and the first shielding strip have a first sub-overlapping length in the two directions, defined as L1, and the first electrode layer and the second shielding strip in the third direction There is a second sub-overlapping length, defined as L2, S1=W1*(L1+L2); the first electrode layer and the third shielding strip have a third sub-overlapping length in the third direction, defined as L3, the first electrode layer An electrode layer and the fourth shielding strip have a fourth sub-overlapping length in the third direction, which is defined as L4, S2=W2*(L3+L4), wherein L1=L3, L2=L4.

As an optional technical solution, the first shielding strip has a first length in the third direction, defined as L11, the second shielding strip has a second length in the third direction, defined as L22, and the first electrode layer The length in the third direction is greater than the first length and the second length, such that L1=L11, L2=L22.

As an optional technical solution, when W2-W1=0.35um, and the area of the first transverse keel is equal to the area of the second transverse keel, define the width of the first longitudinal keel in the second direction as K1, define The length of the first longitudinal keel in the third direction is Y1, the width of the second longitudinal keel in the second direction is defined as K2, and the length of the second longitudinal keel in the third direction is defined as Y2, wherein:

0.35um*(L1+L2)-(Y1*K1-Y2*K2)=0.

As an optional technical solution, when K1=K2, 0.35um*(L1+L2)-(K1*(Y1-Y2)=0.

In the display device of the present invention, the overlapping area of the first electrode layer and the third and fourth shielding bars in the second sub-pixel area is larger than that in the first sub-pixel area, so that the first electrode layer and the metal shielding The coverage relationship of the layers adjusts the electric field in the second sub-pixel area, so that the Phi angle of the liquid crystal molecules here is adjusted to be similar to or even the same as other areas, so that the horizontal viewing angle and vertical viewing angle of the second sub-pixel area are symmetrical, improving the display quality of the screen.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

FIG. 1 is a relationship diagram between gray scale and brightness of each sub-pixel in a display panel in the prior art;

Fig. 2 is a partial sectional view of the display device of the present invention;

3 is a top view of the first sub-pixel region on the second substrate of the present invention;

4 is a partial cross-sectional view of the first sub-pixel region on the second substrate of the present invention;

5 is a top view of the second sub-pixel region on the second substrate of the present invention;

6 is a partial cross-sectional view of the second sub-pixel region on the second substrate of the present invention;

7 is a top view of the third sub-pixel region on the second substrate of the present invention;

FIG. 8 is a partial cross-sectional view of the third sub-pixel region on the second substrate of the present invention.

Detailed ways

The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the appended claims of the present invention.

Please refer to Figures 2 to 6, Figure 2 is a partial cross-sectional view of the display device of the present invention; Figure 3 is a top view of the first sub-pixel region on the second substrate of the present invention; Figure 4 is a first sub-pixel region on the second substrate of the present invention A partial cross-sectional view of the sub-pixel region; FIG. 5 is a top view of the second sub-pixel region on the second substrate of the present invention; FIG. 6 is a partial cross-sectional view of the second sub-pixel region on the second substrate of the present invention.

The display device 1000 of the present invention includes a first substrate 100 and a second substrate 200 disposed opposite to each other. In actual operation, there is a liquid crystal layer 300 between the first substrate 100 and the second substrate 200 . The first substrate 100 may be a color filter substrate, and the second substrate 200 may be an array substrate. The first substrate 100 is provided with a first color resistance 110 and a second color resistance 120. In the first direction F1, the height of the first color resistance 110 is smaller than the height of the second color resistance 120. Here, the height of the first color resistance 110 is The heights of the first color resist 110 and the second color resist 120 refer to the values of the first color resist 110 and the height of the second color resist 120 in the thickness direction (ie, the first direction F1 ) of the display device 1000 . The second substrate 200 is provided with a metal shielding layer 210 and a first electrode layer 220 , and the first electrode layer 220 partially covers the metal shielding layer 210 , so that a part of the metal shielding layer 210 is exposed. The material of the first electrode layer 220 may be indium tin oxide. The second substrate 200 has a first sub-pixel area 201 and a second sub-pixel area 202 corresponding to the first color resistance 110 and the second color resistance 120 respectively, and the metal shielding layer 210 has oppositely disposed in the first sub-pixel area 201 The first shielding strip 211 and the second shielding strip 212, the first electrode layer 220 and the first shielding strip 211 and the second shielding strip 212 have a first overlapping area, which is defined as S1 (unit can be um2), the metal shielding layer 210 There are third shielding strips 213 and fourth shielding strips 214 opposite to each other in the second sub-pixel region 202, and there is a second overlapping area between the first electrode layer 220, the third shielding strips 213 and the fourth shielding strips 214, which is defined as S2 (the unit can be um2), wherein, S1<S2. In actual operation, the first color resistance 110 is a green color resistance, and a green sub-pixel is formed at its position; the second color resistance 120 is a blue color resistance, and a blue sub-pixel is formed at its position.

In actual operation, since the height of the second color resistance 120 is greater than that of the first color resistance 110, for example, the height of the second color resistance 120 is 200-300nm higher than that of the first color resistance 110, so that the second color resistance corresponding to the second color resistance 120 The gap between the first substrate 100 and the second substrate 200 at the pixel area 202 (the distance between the apex of the element on the first substrate 100 and the apex of the element on the second substrate 200) is smaller (for example, than the first color resist The gap between the first substrate 100 and the second substrate 200 at the corresponding first sub-pixel region 201 is 200-300nm smaller), and due to the gap between the first electrode layer and the shielding strip in all sub-pixel regions in the prior art The overlapping area is the same, in the case where the same voltage is applied to the lines on the first substrate 100 and the second substrate 200, the electric field between the first substrate 100 and the second substrate 200 here is different from other places, so that this The Phi angle of the liquid crystal molecules at the location is not 45° (that is, different from other locations), which may lead to an asymmetry between the horizontal viewing angle and the vertical viewing angle, so that the image display quality at the second sub-pixel region 202 is not good.

After experiments, the present invention designs that the overlapping area of the first electrode layer 220 and the third shielding strip 213 and the fourth shielding strip 214 in the second sub-pixel area 202 is larger than that of the first sub-pixel area 201, so that the second The covering relationship between the first electrode layer 220 and the metal shielding layer 210 adjusts the electric field in the second sub-pixel area 202, so that the Phi angle of the liquid crystal molecules here is adjusted to be similar to or even the same as other areas, so that the second sub-pixel area The horizontal viewing angle and vertical viewing angle of the 202 are symmetrical, which improves the display quality of the picture.

Please refer to Figure 2, Figure 7 and Figure 8 together. 7 is a top view of the third sub-pixel region on the second substrate of the present invention; FIG. 8 is a partial cross-sectional view of the third sub-pixel region on the second substrate of the present invention. As shown in FIG. 2 , FIG. 7 and FIG. 8 , a third color resistance 130 is also provided on the first substrate 100 , and the height of the third color resistance 130 is equal to the height of the first color resistance 110 . Here, the third color resistance 130 is The height refers to the value of the third color resist 130 in the thickness direction (ie, the first direction F1 ) of the display device 1000 . The second substrate 200 has a third sub-pixel region 203 corresponding to the third color resist 130, the metal shielding layer 210 has a fifth shielding strip 215 and a sixth shielding strip 216 opposite to the third sub-pixel region 203, and the first electrode layer There is a third overlapping area between 220 and the fifth shielding strip 215 and the sixth shielding strip 216, which is defined as S3 (unit can be um ² ), where S3=S1. In actual operation, the third color resistance 130 is a red color resistance, and a red sub-pixel is formed at its position.

In actual operation, the height of the first color resistance 110 is equal to the height of the third color resistance 130, so that the distance between the first substrate 100 and the second substrate 200 at the first sub-pixel region 201 corresponding to the first color resistance 110 is The gap is equal to the gap at the third sub-pixel area 203. When the third overlapping area is equal to the first overlapping area, the electric field in the first sub-pixel area 201 is the same as the electric field environment in the third sub-pixel area 203. The two sub-pixels The Phi angles of the liquid crystal molecules in the pixel area are the same, and the horizontal viewing angle and the vertical viewing angle in the two areas are symmetrical, so as to ensure the display quality of the picture.

Please refer to FIG. 3, FIG. 5 to FIG. 6 at the same time. As shown in FIG. The transverse keel 231 and the first longitudinal keel 241 are located between the first shielding strip 211 and the second shielding strip 212. In actual operation, the two ends of the first transverse keel 231 can be respectively connected to the first shielding strip 211 and the second shielding strip 212. , of course, may not be connected. The first electrode layer 220 covers the first transverse keel 231 and the first longitudinal keel 241. The total area of the first transverse keel 231 and the first longitudinal keel 241 is the area of the first keel, which is defined as A1 (unit can be um ² ). As shown in FIG. 5 , the metal shielding layer 210 also has a second transverse keel 232 and a second longitudinal keel 242 distributed in a cross in the second sub-pixel area 202 , and the second transverse keel 232 and the second longitudinal keel 242 are located in the third Between the shielding strip 213 and the fourth shielding strip 214 , in actual operation, the two ends of the second transverse keel 232 may be respectively connected to the third shielding strip 213 and the fourth shielding strip 214 , or may not be connected. The first electrode layer 220 covers the second transverse keel 232 and the second longitudinal keel 242. The total area of the second transverse keel 232 and the second longitudinal keel 242 is the second keel area, which is defined as A2 (the unit can be um ² ), where , S1+A1=S2+A2.

In the present invention, since the second overlapping area between the first electrode layer 220 and the third shielding strip 213 and the fourth shielding strip 214 in the second sub-pixel region 202 is larger than that of the first electrode layer 210 in the first sub-pixel region 201 The first overlapping area with the first shielding strip 211 and the second shielding strip 212 makes the storage capacitor Cst2 in the second sub-pixel region 202 slightly larger than the storage capacitor Cst1 in the first sub-pixel region 201 . In order to prevent the feedthrough voltage Vft in the two sub-pixel regions from being affected by the difference in the storage capacitance Cst in the two sub-pixel regions, which may cause jitter or other problems in the display screen, the first sub-pixel region 201 in the present invention The sum of the first keel area and the first overlapping area is equal to the sum of the second keel area and the second overlapping area in the second sub-pixel area 202, that is, S1+A1=S2+A2. In this way, the first electrode layer 220 The overlapping area of the metal shielding layer 210 in the first sub-pixel region 201 is equal to the overlapping area of the metal shielding layer 210 in the second sub-pixel region 202, so that by the compensation of the first keel area, each sub-pixel region The storage capacitors Cst are equal, so that the feed-through voltage Vft in each sub-pixel area remains in a balanced state, ensuring the display quality of the picture. It should be noted that, considering the set position of the keel, adjusting the size of the keel will not affect the optical performance of the display device 1000 . Generally, the keel has an upper and lower design space of 4 to 6um. Such a design space makes adjusting the size of the keel not have a great impact on the aperture ratio of each sub-pixel area.

3 to 6, the second substrate 200 has a gate line G1, the gate line G1 extends along the second direction F2, the first shielding strip 211, the second shielding strip 212, the third shielding strip 213 and the fourth shielding strip 214 extends along the third direction F3, and the first direction F1, the second direction F2 and the third direction F3 are perpendicular to each other. The overlapping width of the first electrode layer 220, the first shielding strip 211 and the second shielding strip 212 in the second direction F2 is the first overlapping width, which is defined as W1 (unit can be um), the first electrode layer 220 and the second shielding strip The overlapping width of the three shielding strips 213 and the fourth shielding strip 214 in the second direction F2 is the second overlapping width, which is defined as W2 (unit can be um). In this embodiment, 0.23um<W2-W1<0.58um .

As shown in FIG. 3 and FIG. 5, the first electrode layer 220 and the first shielding strip 211 have a first sub-overlapping length in the third direction F3, which is defined as L1 (the unit can be um). The two shielding strips 212 have a second sub-overlapping length in the third direction F3, which is defined as L2 (unit can be um), S1=W1*L1+W1*L2, which is further simplified as S1=W1*(L1+L2). The first electrode layer 220 and the third shielding strip 213 have a third sub-overlapping length in the third direction F3, defined as L3, and the first electrode layer 220 and the fourth shielding strip 214 have a fourth sub-overlapping length in the third direction F3 The length is defined as L4, S2=W2*L3+W3*L4, which is further simplified as S2=W2*(L3+L4). In this implementation, L1=L3, L2=L4. In other words, the overlapping lengths of the first electrode layer 220 and the two shielding bars in each sub-pixel region are equal, so the difference in the overlapping area mainly depends on the overlapping width. As shown in FIG. 3 and FIG. 5, L1<L2, generally, because the thin film transistor is disposed adjacent to one side of the sub-pixel region, the length of the first electrode layer 220 there is shorter in the third direction F3 than the other side, thus The overlapping lengths of the above two sides and the two masking strips are different.

In actual operation, the first shielding strip 211 has a first length in the third direction F3, defined as L11, the second shielding strip 212 has a second length in the third direction F3, defined as L22, and the first electrode layer 220 is defined as L22 in the third direction F3. The length of the third direction F3 may be greater than the above-mentioned first length and second length, so that L1=L11, L2=L22. But in this embodiment, as shown in FIG. 2, the length of the first electrode layer 220 corresponding to the first shielding strip 211 in the third direction F3 is greater than the length of the first shielding strip 211, but at the same time the first electrode layer 220 corresponds to the second shielding strip 211. The length of the shielding strip 212 is shorter than the length of the second shielding strip 212, which can be defined by the user according to actual needs.

As shown in Figure 3 and Figure 5, define the width of the first longitudinal keel 241 in the second direction F2 as K1 (unit can be um), define the length of the first longitudinal keel 241 in the third direction F3 as Y1 (unit can be um), define the width of the second longitudinal keel 242 in the second direction F2 as K2 (unit can be um), define the length of the second longitudinal keel 241 in the third direction F3 as Y2 (unit can be um).

first embodiment

In this embodiment, 0.23um<W2-W1<0.58um, and the first sub-overlapping length is equal to the third sub-overlapping length, and the second sub-overlapping length is equal to the fourth sub-overlapping length, ie L1=L3, L2=L4.

(1) If the design is carried out according to the lower limit of the difference between W2 and W1, then:

0.23*(L1+L2)-(A1-A2)＝0........... Relational formula 1

In actual operation, considering that there will be a certain deviation between the process capability and the design value, a certain tolerance range can also be designed to ensure the design effect. Assuming that tolerance is ± 3% (the following examples are all described with this numerical value), then obtain:

0.23*(L1+L2)-(A1-A2)＝0±3％......Relationship 2

(2) If the design is carried out according to the upper limit of the difference between W2 and W1, then:

0.58*(L1+L2)-(A1-A2)＝0...........Relationship 3

If the tolerance design is increased, for example:

0.58*(L1+L2)-(A1-A2)＝0±3％......Relationship 4

Therefore, after knowing the difference between the first overlapping width and the second overlapping width and measuring the first overlapping length and the second overlapping length, the first keel area and the second overlapping length can be reasonably designed according to the above relational formula. Keel area.

second embodiment

In this embodiment, on the basis of the first embodiment, further restrictive conditions are added, specifically: the area of the first transverse keel 231 is equal to the area of the second transverse keel 232 .

(1) If the design is carried out according to the lower limit of the difference between W2 and W1, then:

0.23*(L1+L2)-(Y1*K1-Y2*K2)＝0...........Relational formula 5

If the tolerance design is increased, for example:

0.23*(L1+L2)-(Y1*K1-Y2*K2)＝0±3％......Relationship 6

(2) If the design is carried out according to the upper limit of the difference between W2 and W1, then:

0.58*(L1+L2)-(Y1*K1-Y2*K2)＝0...........Relationship 7

If the tolerance design is increased, for example:

0.58*(L1+L2)-(Y1*K1-Y2*K2)＝0±3％......Relationship 8

Thus, after knowing the difference between the first overlapping width and the second overlapping width, the area of the first transverse keel 231 is equal to the area of the second transverse keel 232 and the first overlapping length and the second overlapping length are measured, that is The length and width of the first longitudinal keel 241 and the length and width of the second longitudinal keel 242 can be reasonably designed according to the above relationship.

third embodiment

In this embodiment, on the basis of the second embodiment, further restrictive conditions are added, specifically: the length of the first longitudinal keel 241 in the third direction F3 is equal to the length of the second longitudinal keel 242 in the third direction F3, that is, Y1 =Y2.

(1) If the design is carried out according to the lower limit of the difference between W2 and W1, and Y1=Y2 is brought into relational formula 5, then:

0.23*(L1+L2)-[Y1*(K1-K2)]＝0...........Relationship 9

If the tolerance design is increased, for example:

0.23*(L1+L2)-[Y1*(K1-K2)]＝0±3％......Relational formula 10

(2) If the design is carried out according to the upper limit of the difference between W2 and W1, and Y1=Y2 is brought into relational expression 7, then:

0.58*(L1+L2)-[Y1*(K1-K2)]＝0........... Relational formula 11

If the tolerance design is increased, for example:

0.58*(L1+L2)-[Y1*(K1-K2)]＝0±3％......Relational formula 12

Thus, knowing the difference between the first overlapping width and the second overlapping width, the area of the first transverse keel 231 is equal to the area of the second transverse keel 232, the length of the first longitudinal keel 241 is equal to that of the second longitudinal keel 242 After measuring the first overlapping length and the second overlapping length, the length of the two longitudinal keels and the width of the first longitudinal keel 241 and the width of the second longitudinal keel 242 can be reasonably designed according to the above relational formula.

Fourth embodiment

In this embodiment, on the basis of the second embodiment, further restrictive conditions are added, specifically: the width of the first longitudinal keel 241 in the second direction F2 is equal to the width of the second longitudinal keel 242 in the second direction F2, that is, K1 =K2.

At this time, (1) If the design is carried out according to the lower limit of the difference between W2 and W1, and K1=K2 is brought into relational expression 5, then:

0.23*(L1+L2)-[K1*(Y1-Y2)]＝0........... Relational formula 13

If the tolerance design is increased, for example:

0.23*(L1+L2)-[K1*(Y1-Y2)]＝0±3％......Relational formula 14

(2) If the design is carried out according to the upper limit of the difference between W2 and W1, and K1=K2 is brought into relational expression 7, then:

0.58*(L1+L2)-[K1*(Y1-Y2)]＝0...........Relational formula 15

If the tolerance design is increased, for example:

0.58*(L1+L2)-[K1*(Y1-Y2)]＝0±3％......Relational formula 16

Thus, knowing the difference between the first overlapping width and the second overlapping width, the area of the first transverse keel 231 is equal to the area of the second transverse keel 232, the width of the first longitudinal keel 241 is equal to that of the second longitudinal keel 242 After the width and the first overlapping length and the second overlapping length are measured, the width of the two longitudinal keels and the lengths of the first longitudinal keel 241 and the length of the second longitudinal keel 242 can be reasonably designed according to the above relationship.

fifth embodiment

In this embodiment, on the basis of the second embodiment, further restrictive conditions are added, specifically: specifically define the overlapping width of the first electrode layer 220, the third shielding strip 213 and the fourth shielding strip 214 in the second direction F2 It is 0.35um larger than the overlapping width of the first electrode layer 220 and the first shielding strip 211 and the second shielding strip 212 in the second direction F2, that is, W2−W1=0.35um.

According to the relational expression of S1+A1=S2+A2:

0.35um*(L1+L2)-(Y1*K1-Y2*K2)＝0...........Relationship 17

Therefore, after the difference between the first overlapping width and the second overlapping width is known, and the area of the first transverse keel 231 is equal to the area of the second transverse keel 232, the second transverse keel 231 can be reasonably designed according to the above relation 17. The length and width of a longitudinal keel 241 and the length and width of a second longitudinal keel 242 .

Sixth embodiment

In this embodiment, on the basis of the fifth embodiment, further restrictive conditions are added, specifically: the width of the first longitudinal keel 241 in the second direction F2 is equal to the width of the second longitudinal keel 242 in the second direction F2, namely K1=K2, if this relationship is brought into relational formula 17, then:

0.35um*(L1+L2)-(K1*(Y1-Y2))＝0...........Relationship 18

In this way, knowing the difference between the first overlap width and the second overlap width, the area of the first transverse keel 231 is equal to the area of the second transverse keel 232 and the width of the first longitudinal keel 241 is equal to the second longitudinal keel After the width of 242, the width of the two longitudinal keels and the length of the first longitudinal keel 241 and the length of the second longitudinal keel 242 can be reasonably designed according to the above relation 18.

The above-mentioned examples are for illustration only, and do not limit the embodiments of the present invention. And in the above embodiments, only the first sub-pixel region 201 and the second sub-pixel region 202 are described. In actual operation, since the design of the third sub-pixel region 203 is relatively similar in size to the design of the first sub-pixel region 201 , no further details are given here.

In the present invention, the overlapping area of the first electrode layer and the third and fourth shielding strips in the second sub-pixel area is larger than that in the first sub-pixel area, so that the first electrode layer and the metal shielding layer The coverage relationship adjusts the electric field in the second sub-pixel area, so that the Phi angle of the liquid crystal molecules here is adjusted to be similar to or even the same as other areas, so that the horizontal viewing angle and vertical viewing angle of the second sub-pixel area are symmetrical, improving the image quality. display quality.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (10)

1. A display device, characterized in that it comprises: The first substrate is provided with a first color resistance and a second color resistance, and in the first direction, the height of the first color resistance is smaller than the height of the second color resistance; and The second substrate is provided with a metal shielding layer and a first electrode layer, and the first electrode layer is partially covered on the metal shielding layer, and the second substrate is respectively provided with a first color resistance and a second color resistance respectively. A sub-pixel area and a second sub-pixel area, the metal shielding layer has a first shielding strip and a second shielding strip oppositely arranged in the first sub-pixel area, the first electrode layer and the first shielding strip and the There is a first overlapping area between the second shielding strips, which is defined as S1. The metal shielding layer has a third shielding strip and a fourth shielding strip oppositely arranged in the second sub-pixel area. The first electrode layer and the third electrode layer There is a second overlapping area between the shielding strip and the fourth shielding strip, which is defined as S2, wherein S1<S2. 2. The display device according to claim 1, wherein the first color resistance is a green color resistance, and the second color resistance is a blue color resistance. 3. The display device according to claim 2, wherein a third color resist is further provided on the first substrate, the height of the third color resist is equal to the height of the first color resist, and the third color resist is provided on the second substrate. Corresponding to the third color resist has a third sub-pixel area, the metal shielding layer has a fifth shielding strip and a sixth shielding strip opposite to the third sub-pixel area, the first electrode layer and the fifth shielding strip and There is a third overlapping area between the sixth shielding strips, which is defined as S3, where S3=S1. 4. The display device according to claim 3, wherein the third color resistance is a red color resistance. 5. The display device according to claim 1, wherein the metal shielding layer further has a first transverse keel and a first vertical keel distributed in a cross in the first sub-pixel area, the first transverse keel and the first vertical keel The first longitudinal keel is located between the first shielding strip and the second shielding strip, and the first electrode layer covers the first transverse keel and the first longitudinal keel, the first transverse keel and the first longitudinal keel The total area of is the area of the first keel, which is defined as A1. The metal shielding layer also has a second horizontal keel and a second vertical keel distributed in a cross in the second sub-pixel area. The second horizontal keel and the second The longitudinal keel is located between the third shielding strip and the fourth shielding strip, and the first electrode layer covers the second transverse keel and the second longitudinal keel, and the total area of the second transverse keel and the second longitudinal keel is the second keel area, defined as A2, where S1+A1=S2+A2. 6. The display device according to claim 1, wherein the second substrate has grid lines, the grid lines extend along the second direction, the first shielding strips, the second shielding strips, the third shielding strips The strip and the fourth shielding strip extend along the third direction, the first direction, the second direction and the third direction are perpendicular to each other, the first electrode layer and the first shielding strip and the second shielding strip are in the The overlapping width in the first direction is the first overlapping width, defined as W1, and the overlapping width of the first electrode layer, the third shielding strip and the fourth shielding strip in the second direction is the second overlapping width. Width, defined as W2, where 0.23um<W2-W1<0.58um. 7. The display device according to claim 6, characterized in that: the first electrode layer and the first shielding strip have a first sub-overlapping length in the two directions, defined as L1, and the first electrode layer and the first shielding strip The second shielding strip has a second sub-overlapping length in the third direction, which is defined as L2, S1=W1*(L1+L2); the first electrode layer and the third shielding strip have a third sub-lapping length in the third direction. The overlapping length is defined as L3, the first electrode layer and the fourth shielding strip have a fourth sub-overlapping length in the third direction, defined as L4, S2=W2*(L3+L4), wherein, L1=L3, L2=L4. 8. The display device according to claim 7, wherein the first shielding strip has a first length in the third direction, defined as L11, and the second shielding strip has a second length in the third direction, Defined as L22, the length of the first electrode layer in the third direction is greater than the first length and the second length, such that L1=L11, L2=L22. 9. The display device according to claim 7, characterized in that: when W2-W1=0.35um, and the area of the first transverse keel is equal to the area of the second transverse keel, the first longitudinal keel is defined at the The width in the second direction is K1, the length of the first longitudinal keel in the third direction is defined as Y1, the width of the second longitudinal keel in the second direction is defined as K2, and the length of the second longitudinal keel in the third direction is defined as K2. The length of the direction is Y2, where: 0.35um*(L1+L2)-(Y1*K1-Y2*K2)=0. 10. The display device according to claim 7, wherein when K1=K2, 0.35um*(L1+L2)-(K1*(Y1-Y2)=0.