CN112666760B - Sub-pixel structure - Google Patents
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- 239000004973 liquid crystal related substance Substances 0.000 description 7
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Abstract
The sub-pixel structure at least comprises a main pixel block and a sub-pixel block which are connected with each other, wherein the sub-pixel block comprises a connecting end and a non-connecting end which are used for connecting the main pixel block, and the width of the connecting end is respectively smaller than that of the main pixel block and that of the non-connecting end; the connecting end of the main pixel block and the secondary pixel block is provided with a groove, and the shape of the groove can lead the induced dark fringes to be converged and lead the dark fringes of the sub-pixel structure to be more stable.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a sub-pixel structure.
Background
The main outline of the existing sub-pixel structure is rectangular, and the main electrode and the branch electrode of the pixel electrode are arranged in a shape like a Chinese character mi, because metal wiring occupies part of the sub-pixel space, the length-width ratio of the sub-pixel structure is usually set to be larger, abnormal alignment is easy to occur when the length-width of the sub-pixel structure is larger than 3.5, the pixel penetration rate is seriously damaged, and the dark stripe of the sub-pixel structure is abnormal, therefore, the existing sub-pixel structure has the technical problem of abnormal dark stripe.
Disclosure of Invention
The invention provides a sub-pixel structure which is used for solving the technical problem of dark stripe abnormity of the conventional sub-pixel structure.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
the embodiment of the invention provides a sub-pixel structure, which at least comprises a main pixel block and a sub-pixel block, wherein the main pixel block is connected with the sub-pixel block, one end of the sub-pixel block is arranged to be a connecting end used for connecting the main pixel block, and the other end of the sub-pixel block is a non-connecting end, wherein the width of the connecting end is at least smaller than that of the main pixel block, and the width of the connecting end is smaller than that of the non-connecting end.
In the sub-pixel structure provided by the invention, the long side at the connecting end is sunken to form at least one groove.
In the sub-pixel structure provided by the invention, the main outline of the sub-pixel structure is rectangular, and the main outline comprises a short side arranged along a first direction and a long side arranged along a second direction.
In the sub-pixel structure provided by the invention, the sub-pixel structure comprises a first main electrode arranged along a first direction, a second main electrode arranged along a second direction and branch electrodes, the first main electrode and the second main electrode divide the sub-pixel structure into four domains, each sub-pixel block comprises a first sub-pixel block positioned on one side of the main pixel block and a second sub-pixel block positioned on the other side of the main pixel block, the long sides of any domain are recessed to form a groove, and the grooves are symmetrically arranged relative to the second main electrode.
In the sub-pixel structure provided by the invention, the groove is in the shape of a right triangle, the groove comprises a bottom edge and a bevel edge, and one bottom edge of the groove is parallel to the short edge of the main contour.
In the sub-pixel structure provided by the invention, the depth range of the groove is more than 5 micrometers and less than one fifth of the length of the short side.
In the sub-pixel structure provided by the invention, an included angle is formed between the bevel edge and the bottom edge of the groove, and the included angle ranges from 75 degrees to 85 degrees.
In the sub-pixel structure provided by the invention, the groove is in a right trapezoid shape, the groove comprises two right-angle sides, one right-angle side is arranged along a first direction, the other right-angle side is arranged along a second direction, and the length range of the right-angle side arranged along the second direction is more than 5 micrometers.
In the sub-pixel structure provided by the invention, the distance between the adjacent grooves is greater than the side length of the short side, the ratio of the distance between the adjacent grooves to the side length of the short side is less than 2.5, and the distance range from any intersection point of the groove and the long side to the short side is greater than 4 micrometers.
In the sub-pixel structure provided by the invention, the distance between the adjacent grooves is equal to the side length of the short side, and the main pixel block is a square block.
The invention has the beneficial effects that: the sub-pixel structure at least comprises a main pixel block and a sub-pixel block which are connected with each other, wherein the sub-pixel block comprises a connecting end and a non-connecting end, the connecting end is used for connecting the main pixel block, and the width of the connecting end is respectively smaller than the width of the main pixel block and the width of the non-connecting end; the grooves are formed at the connecting ends of the main pixel block and the secondary pixel block, and meanwhile, the induced dark stripes can be converged due to the shape of the grooves, the dark stripes of the sub-pixel structure are more stable, and the technical problem that the dark stripes are abnormal in the conventional sub-pixel structure is solved.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a first structure of a sub-pixel structure according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a first dark stripe simulation of a sub-pixel structure according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a second example of dark-fringe simulation of a sub-pixel structure according to an embodiment of the present invention;
FIG. 4 is a second structural diagram of a sub-pixel structure according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a third dark stripe simulation of a sub-pixel structure according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1, the sub-pixel structure provided by the present invention at least includes a main pixel block 1 and a sub-pixel block 2, wherein the main pixel block 1 is connected to the sub-pixel block 2, one end of the sub-pixel block 2 is configured as a connection end for connecting to the main pixel block 1, and the other end is a non-connection end, wherein the width of the connection end is at least smaller than the width L2 of the main pixel block 1, and the width of the connection end is smaller than the width of the non-connection end.
The width of the main pixel block 1 is the width of the short side L2 of the main outline of the sub-pixel structure.
Wherein, the main pixel block 1 and the sub-pixel block are connected through a pixel electrode 10, wherein, between the main pixel block 1 and the sub-pixel block 2, the main contour is recessed at the connecting end to form at least one groove 20.
In this embodiment, the sub-pixel structure at least includes a main pixel block 1 and a sub-pixel block 2, the main pixel block 1 is connected to the sub-pixel block, one end of the sub-pixel block is configured as a connection end for connecting to the main pixel block 1, and the other end is a non-connection end, wherein the width of the connection end is at least smaller than the width L2 of the main pixel block 1, and the width of the connection end is smaller than the width of the non-connection end; the grooves are formed at the connecting ends of the main pixel block and the secondary pixel block, and meanwhile, the induced dark stripes can be converged due to the shape of the grooves, the dark stripes of the sub-pixel structure are more stable, and the technical problem that the dark stripes are abnormal in the conventional sub-pixel structure is solved.
In one embodiment, the long side at the connecting end is recessed to form at least one groove 20.
In an embodiment, the sub-pixel structure includes a first main electrode disposed along a first direction, a second main electrode disposed along a second direction, and a branch electrode, the first main electrode and the second main electrode divide the sub-pixel structure into four domains, the sub-pixel block 2 includes a first sub-pixel block 2 located on one side of the main pixel block 1 and a second sub-pixel block 2 located on the other side of the main pixel block 1, the long side of any one of the domains is recessed to form a groove, and the grooves are symmetrically disposed about the second main electrode.
In one embodiment, the groove is in the shape of a right triangle, the groove comprising a base and a hypotenuse, one of the bases of the groove being parallel to the short side of the main profile.
In one embodiment, the depth of the groove ranges more than 5 micrometers and less than one fifth of the length of the short side.
In one embodiment, the inclined edge of the groove forms an included angle with the bottom edge, and the included angle ranges from 75 degrees to 85 degrees.
In one embodiment, the recess is in the shape of a right trapezoid, and the recess comprises two right-angled sides, wherein one of the right-angled sides is disposed along a first direction, and the other of the right-angled sides is disposed along a second direction, and the length of the right-angled sides disposed along the second direction is greater than 5 micrometers.
In one embodiment, the distance between the adjacent grooves is greater than the length of the short side, the ratio of the distance between the adjacent grooves to the length of the short side is less than 2.5, and the distance range of any intersection point of the groove and the long side from the short side is greater than 4 micrometers.
In one embodiment, the distance between adjacent grooves is equal to the length of the short side, and the main pixel block 1 is a square block.
In one embodiment, as shown in fig. 1, the main profile is rectangular in shape and includes a short side L2 disposed along a first direction and a long side L1 disposed along a second direction, wherein the long side L1 is recessed to form at least one groove 20.
The groove 20 divides the long side L1 into two or more sections, and different sections correspond to different pixel blocks.
In one embodiment, the shape of the sub-pixel structure is a regular shape.
Wherein the regular shape may be a rectangle or a square.
Wherein, the regular shape can also be a circle or an ellipse.
Wherein the regular shape may also be a trapezoid, a parallelogram, or a triangle.
In one embodiment, the shape of the sub-pixel structure is a regular shape, and the groove 20 is arranged on the longer side L1 of the regular shape.
One regular shape having a relatively long length and width is divided into a plurality of regular shapes having a relatively small length and width by the grooves 20.
In one embodiment, as shown in fig. 1, the sub-pixel structure includes three pixel blocks, an aspect ratio of a distance H between adjacent pixel blocks to a side length of a short side L2 is less than 2.5, and a distance range from any intersection of the groove 20 and the long side L1 to the short side L2 is greater than 4 μm.
In an embodiment, as shown in fig. 1 and 2, an included angle AA is formed between the oblique side of the groove 20 and the bottom side, the included angle a between the main pixel block 1 and the sub-pixel block 2 may be 76.5 degrees, fig. 2 is an example simulation verification result of the design, where in the layout, the length of the long side L1 is equal to 267.5 microns, the length of the short side L2 is equal to 105 microns, the distance between adjacent pixel blocks is 196.74 microns, the depth of the groove 20 is 10 microns, and the included angle a is 76.5 degrees.
In the simulation process, due to the effect of polarity inversion, the pixel voltage is positive or negative and does not affect the liquid crystal deflection, so the variation range of the pixel voltage difference is set to be 0-8V in the simulation.
The simulation result shows that the dark fringe abnormality does not occur in the central dark fringe of the layout, and the dark fringe is similar to the simulation result of the pixel layout with the aspect ratio smaller than 3.5. In addition, at the groove 20, when the pixel voltage is small, as shown in fig. 2 (i) - (iv), there is a circle of induced dark stripes around the oblique side, which is especially obvious at low voltage, but the induced dark stripes gradually shrink toward the oblique side as the pixel voltage increases, and as shown in fig. 2 (V), the induced dark stripes substantially coincide with the oblique side when the pixel voltage is equal to 8V.
In an embodiment, as shown in fig. 3, the oblique side of the groove 20 and the bottom side form an included angle a, the included angle a between the main pixel block 1 and the sub-pixel block 2 may be 84.3 degrees, fig. 3 is an example simulation verification result of the design, where in the layout, the length of the long side L1 is equal to 267.5 microns, the length of the short side L2 is equal to 105 microns, the distance between adjacent pixel blocks is 196.74 microns, the depth of the groove 20 is 10 microns, and the included angle a is 76.5 degrees.
When the included angle a is 84.3 degrees, the simulation result is almost the same as that when the included angle a is 76.5 degrees in fig. 2, and it can be seen that when the pixel voltage is 2.75V, the induced dark fringe is separated from the oblique edge more obviously, but the area enclosed by the dark fringe is greatly improved compared with the design that the included angle a is equal to 76.5 degrees. When the pixel voltage is higher than 3V, the dark fringe is basically overlapped with the oblique edge, and the dark fringe disappears completely when the pixel voltage is 8V.
In an embodiment, the pixel electrode 10 includes a plurality of first main electrodes 101 disposed along a first direction, a second main electrode 101 disposed along a second direction, and a branch electrode 102, the branch electrode 102 is in contact with the first main electrode 101 and the second main electrode 101, one of the bottom sides of the groove 20 is parallel to the first main electrode 101, an included angle is formed between the oblique side of the groove 20 and the bottom side, and an angle range of the included angle is 75 degrees to 85 degrees.
The optimum range of the included angle a of the reentrant angle is 75 degrees to 85 degrees, and the larger the angle is, the better the stabilization effect on the dark fringes is, but more bright area openings of the pixel electrode 10 are lost.
In one embodiment, the main profile has four triangular concave corners distributed on the left and right long sides L1.
In one embodiment, the depth of the groove 20 ranges more than 5 microns and less than one fifth of the length of the short sides L2.
In one embodiment, the groove 20 is in the shape of a right triangle, and the groove 20 includes a base and a hypotenuse.
In one embodiment, the groove 20 has minimal loss to the entire liquid crystal clear area opening when the included angle is 45 degrees.
Wherein, when the included angle is 45 degrees, the dark fringe convergence effect is poor.
Therefore, by forming the grooves 20 in the shape of a right trapezoid, the dark fringe can be converged, the effect of stabilizing the dark fringe can be achieved, and the loss of the entire liquid crystal bright area aperture can be minimized.
In one embodiment, as shown in fig. 4, the groove 20 is in the shape of a right trapezoid, and the groove 20 comprises two legs and a hypotenuse, wherein one leg is disposed in a first direction and the other leg is disposed in a second direction, and the length of the legs disposed in the second direction is greater than 5 microns.
The two right-angle sides are perpendicular to each other, and the inclined side and the right-angle side form an acute included angle B.
Wherein the acute included angle B may be 45 degrees.
In this embodiment, to minimize opening losses, a right trapezoid recess 20 is designed with an angle B equal to 45 degrees, which corrects the dark line in the central dark line region, but also creates a new dark line at the oblique angle.
As shown in fig. 5, on the premise of solving the dark stripe abnormality of the sub-pixel structure with the aspect ratio greater than 3.5, the design has a new problem that the induced dark stripe formed around the groove 20 and the central cross dark stripe are overlapped to cause local dark stripe abnormality.
In one embodiment, the two long sides L1 are symmetrically provided with the grooves 20, and two grooves 20 are provided between the main pixel block 1 and the sub-pixel block 2.
The shape and size of the adjacent grooves 20 may be different on any one of the long sides L1.
The shape of the adjacent grooves 20 may also be triangular, and the depth and the size of the grooves 20 may also be different.
In one embodiment, the sub-pixel structure includes three pixel blocks, on the same long side L1, the distance H between adjacent grooves 20 is greater than the length of the short side L2, the ratio of the distance H between adjacent grooves 20 to the length of the short side L2 is less than 2.5, and the distance range from any intersection point of the groove 20 and the long side L1 to the short side L2 is greater than 4 micrometers.
In one embodiment, the distance H between adjacent grooves 20 on the same long side L1 is equal to the short side L2.
In one embodiment, any one of the long sides L1 is provided with the groove 20, the other long side L1 is not provided with the groove 20, and one groove 20 is provided between the main pixel block 1 and the sub pixel block 2.
In one embodiment, the depth of the groove 20 between the primary pixel block 1 and the secondary pixel block 2 is relatively deep, and the groove 20 separates adjacent pixel blocks to make the dark stripes of the adjacent pixel blocks independent.
In one embodiment, the sub-pixel structure includes more than two pixel blocks independently arranged from each other, and the more than two pixel blocks are arranged in one-dimensional or two-dimensional direction to form a sub-pixel.
The multiple pixel blocks can be combined into sub-pixel structures in multiple forms, and meanwhile, dark stripes of a single pixel block are stable.
Wherein, the length-width ratio of the main outline of the pixel block is 1: 1.
Wherein the mutually independent arrangement is that the dark stripes between the adjacent pixel blocks are mutually independent.
In one embodiment, at least one edge of the main contour protrudes outwards to form a joint between adjacent pixel blocks, the adjacent pixel blocks are arranged in an opposite manner, and the adjacent pixel blocks are connected through the joint between the adjacent pixel blocks.
In one embodiment, a recess is formed on the main contour opposite to the side where the adjacent pixel blocks are connected, and when the adjacent pixel blocks are connected through the connection between the adjacent pixel blocks, the recess forms an isolation region between the adjacent pixel blocks.
In one embodiment, the main outlines have the same shape and size, and the connection positions of adjacent pixel blocks have the same shape and size.
In one embodiment, the pixel electrodes 10 of the pixel blocks include main electrodes 101 and branch electrodes 102, the main electrodes 101 of adjacent pixel blocks are electrically connected through a connection between the adjacent pixel blocks, and the branch electrodes 102 are disposed asymmetrically with respect to the connected main electrodes 101.
In one embodiment, the sub-pixel structure is irregular, and the dark stripes between adjacent pixel blocks can be gradually separated by setting the depth of the groove 20 to be larger.
In one embodiment, the pixel blocks are arranged in two-dimensional directions, the sub-pixel structure is L-shaped, and the sub-pixel structure comprises at least three pixel blocks.
In one embodiment, the pixel electrode 10 includes a main electrode 101 and a branch electrode 102, and the branch electrode 102 includes a first branch electrode and a second branch electrode arranged in different directions, and the first branch electrode and the second branch electrode are respectively located at two sides of the main electrode.
Wherein the first branch electrodes and the second branch electrodes are staggered.
In one embodiment, the closer the shape of the pixel block is to a square, the higher the liquid crystal efficiency is, the higher the transmittance is; if the pixel block is closer to the rectangle, the dark area of the liquid crystal is increased, the liquid crystal efficiency is reduced, the transmittance is also reduced, and when the length-width ratio of the rectangle is larger, the dark fringe abnormality is more easily generated, while the square graphic unit has no dark fringe abnormality, and the square graphic unit has the advantage of stable dark fringe.
The square graphic units have the advantage of stable dark stripes, and when the length-width ratio of the rectangle is too large, the dark stripe abnormality is easily generated, while the square graphic units have no dark stripe abnormality. In addition, when the width of any one of the main electrodes 101 is increased or the widths of the vertical and horizontal main electrodes 101 are increased in the square pattern unit, the dark stripes are not disturbed.
In the present embodiment, the width of the main electrode 101 does not affect the dark fringe effect of the square pixel block.
In one embodiment, the pixel block comprises at least one square pixel block.
The aspect ratio of the pixel block may range from 1 to 1.5.
The pixel structure provided by the invention comprises at least three sub-pixel structures.
The pixel structure comprises a first sub-pixel 201, a second sub-pixel 202 and a third sub-pixel 203;
the first sub-pixel 201, the second sub-pixel 202, and the third sub-pixel 203 may be any one of a red sub-pixel, a blue sub-pixel, a green sub-pixel, and a white sub-pixel.
According to the above embodiments:
the sub-pixel structure at least comprises a main pixel block and a sub-pixel block, wherein the main pixel block is connected with the sub-pixel block, one end of the sub-pixel block is arranged to be a connecting end used for connecting the main pixel block, and the other end of the sub-pixel block is a non-connecting end, wherein the width of the connecting end is at least smaller than that of the main pixel block, and the width of the connecting end is smaller than that of the non-connecting end; the grooves are formed at the connecting ends of the main pixel block and the secondary pixel block, and meanwhile, the induced dark stripes can be converged due to the shape of the grooves, the dark stripes of the sub-pixel structure are more stable, and the technical problem that the dark stripes are abnormal in the conventional sub-pixel structure is solved.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (8)
1. The sub-pixel structure is characterized by at least comprising a main pixel block and a sub-pixel block, wherein the main pixel block is connected with the sub-pixel block, one end of the sub-pixel block is arranged to be used for being connected with a connecting end of the main pixel block, the other end of the sub-pixel block is a non-connecting end, the width of the connecting end is at least smaller than that of the main pixel block, the width of the connecting end is smaller than that of the non-connecting end, the main outline of the sub-pixel structure is rectangular, the main outline comprises a short edge arranged along a first direction and a long edge arranged along a second direction, and the long edge at the connecting end is recessed to form at least one groove.
2. The sub-pixel structure of claim 1, wherein the sub-pixel structure comprises a first main electrode disposed along a first direction, a second main electrode disposed along a second direction, and a branch electrode, the first main electrode and the second main electrode divide the sub-pixel structure into four domains, the sub-pixel block comprises a first sub-pixel block located at one side of the main pixel block and a second sub-pixel block located at the other side of the main pixel block, the long side of any one of the domains is recessed to form a groove, and the grooves are symmetrically disposed with respect to the second main electrode.
3. The sub-pixel structure of claim 2, wherein the groove is shaped as a right triangle, the groove comprising a base and a hypotenuse, one of the bases of the groove being parallel to the short side of the main profile.
4. A sub-pixel structure according to claim 3, wherein the depth of the recess ranges over more than 5 microns and less than one fifth of the length of the short side.
5. The sub-pixel structure of claim 3, wherein the oblique side of the groove forms an angle with the bottom side, and the angle ranges from 75 degrees to 85 degrees.
6. The sub-pixel structure of claim 2, wherein the recess is in the shape of a right trapezoid, the recess comprising two right-angled sides, wherein one of the right-angled sides is disposed along a first direction and the other of the right-angled sides is disposed along a second direction, and wherein the length of the right-angled sides disposed along the second direction is greater than 5 microns.
7. The sub-pixel structure of claim 2, wherein the distance between adjacent grooves is greater than the length of the short side, the ratio of the distance between adjacent grooves to the length of the short side is less than 2.5, and the distance between any intersection point of the groove and the long side is greater than 4 microns from the short side.
8. The sub-pixel structure of claim 2, wherein the distance between adjacent grooves is equal to the length of the short side, and the main pixel block is a square block.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319784A (en) * | 2014-07-07 | 2016-02-10 | 群创光电股份有限公司 | Display panel |
| CN106405952A (en) * | 2016-09-30 | 2017-02-15 | 友达光电股份有限公司 | Pixel electrode |
| CN106502009A (en) * | 2016-09-30 | 2017-03-15 | 友达光电股份有限公司 | Pixel electrode and liquid crystal display panel |
| CN107632470A (en) * | 2017-10-25 | 2018-01-26 | 上海天马微电子有限公司 | Display electrode, array substrate, display panel and display device |
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| KR102549924B1 (en) * | 2018-09-11 | 2023-06-30 | 삼성디스플레이 주식회사 | Liquid crystal display device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319784A (en) * | 2014-07-07 | 2016-02-10 | 群创光电股份有限公司 | Display panel |
| CN106405952A (en) * | 2016-09-30 | 2017-02-15 | 友达光电股份有限公司 | Pixel electrode |
| CN106502009A (en) * | 2016-09-30 | 2017-03-15 | 友达光电股份有限公司 | Pixel electrode and liquid crystal display panel |
| CN107632470A (en) * | 2017-10-25 | 2018-01-26 | 上海天马微电子有限公司 | Display electrode, array substrate, display panel and display device |
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