CN109031826B

CN109031826B - Array substrate, display panel and 3D printing system

Info

Publication number: CN109031826B
Application number: CN201810901830.XA
Authority: CN
Inventors: 林柏全; 席克瑞; 李金玉; 刘金娥; 秦锋; 李小和
Original assignee: Shanghai Tianma Microelectronics Co Ltd
Current assignee: Shanghai Tianma Microelectronics Co Ltd
Priority date: 2018-08-09
Filing date: 2018-08-09
Publication date: 2021-08-06
Anticipated expiration: 2038-08-09
Also published as: CN109031826A

Abstract

The invention discloses an array substrate, a display panel and a 3D printing system, which comprise: the pixel array comprises a substrate base plate and a plurality of pixel groups positioned on the substrate base plate; the pixel group comprises a first central point; the edge profile pattern of the switch assembly includes first and second points symmetrical along a first axis of symmetry, and third and fourth points symmetrical along a second axis of symmetry; the distance from the first point to the first reference line is a, the distance from the second point to the first reference line is b, wherein | (a-b)/(a + b) | is less than or equal to 0 and less than or equal to 10 percent, a is more than 0, and b is more than 0; the distance from the third point to the second reference line is c, the distance from the fourth point to the second reference line is d, wherein, the | (c-d)/(c + d) | is less than or equal to 0 and less than or equal to 10 percent, c is more than 0, and d is more than 0. The edge contour graph of the switch assembly is a shading area in the pixel group, and the center point of the edge contour graph of the switch assembly is close to the first center point to be the same point, so that the 3D printing uniformity is effectively improved when the switch assembly is used for 3D printing.

Description

Array substrate, display panel and 3D printing system

Technical Field

The invention relates to the technical field of 3D printing, in particular to an array substrate, a display panel and a 3D printing system.

Background

Rapid Prototyping (RPM), also called 3D printing, is a high and new Manufacturing technology based on a material accumulation method, and can manufacture a real object or a real model by a molding device in a material accumulation manner according to three-dimensional model data of a part or an object. The 3D printing technology gradually enters the public field of vision in recent years and is rapidly developed due to the advantages of greatly reducing the production cost, improving the utilization rate of raw materials and energy, being customized according to the requirement, greatly saving the manufacturing time of products and the like.

The basic principle of 3D printing is layered processing and superposition molding, i.e. a 3D entity is generated by adding materials layer by layer, when 3D printing is performed, a three-dimensional model of an object to be printed is obtained by a computer through modes of design, scanning, etc., a series of digital slices are completed along a certain direction by a computer aided design technology (e.g. CAD), information of the slices is transmitted to a 3D printer, a machine instruction is generated by the computer according to the slices, a thin layer is printed by the 3D printer according to the machine instruction, and the continuous thin layers are stacked until a solid object is molded to form a three-dimensional solid object, thereby completing 3D printing.

According to the difference of the used materials and the mode of generating the sheet layer, the 3D printing can be roughly summarized into extrusion molding, granular material molding and photopolymerization molding, wherein the photopolymerization molding is to adopt near ultraviolet band light to carry out photosensitive curing molding on liquid photosensitive resin, and only the realization mode of a projection system of the near ultraviolet light is different. One of the low-cost implementations is to control the 3D molding by forming a pattern using a transmissive liquid crystal display instead of a high-cost laser projector, and by exposing a liquid photosensitive resin to light as a mask through which ultraviolet light passes.

Fig. 1 is a schematic structural diagram of a transmission type liquid crystal display panel in the prior art, as shown in fig. 1, the transmission type liquid crystal display panel includes a plurality of pixel units 1, each pixel unit 1 includes a pixel opening area 2 and a switch component 3, each pixel opening area 2 transmits light, each switch component 3 blocks light, each switch component 3 is located on one side of each pixel unit 1, and accordingly widths of the pixel opening areas 2 in all directions are different, widths of the light transmission areas in all directions in each pixel unit 1 in the transmission type liquid crystal display panel are different, and printing uniformity in all directions is poor when a 3D printing system prints.

Disclosure of Invention

In view of the above, the present invention provides an array substrate, a display panel and a 3D printing system.

An embodiment of the present invention provides an array substrate, including: the pixel array comprises a substrate base plate and a plurality of pixel groups positioned on the substrate base plate; the pixel group comprises a switch component and a first sub-pixel opening area, a second sub-pixel opening area, a third sub-pixel opening area and a fourth sub-pixel opening area which surround the switch component clockwise, wherein a first common edge is arranged between the first sub-pixel opening area and the second sub-pixel opening area, a second common edge is arranged between the second sub-pixel opening area and the third sub-pixel opening area, a third common edge is arranged between the third sub-pixel opening area and the fourth sub-pixel opening area, a fourth common edge is arranged between the fourth sub-pixel opening area and the first sub-pixel opening area, the first common edge and the third common edge extend along a first direction, the second common edge and the fourth common edge extend along a second direction, and common extension lines of the first common edge, the second common edge, the third common edge and the fourth common edge intersect at a first central point, the first direction and the second direction intersect; the edge profile pattern of the switch assembly includes at least a first axis of symmetry extending in a third direction and a second axis of symmetry extending in a fourth direction, the third direction intersecting the fourth direction; the edge profile pattern of the switch assembly includes first and second points symmetrical along a first axis of symmetry, and third and fourth points symmetrical along a second axis of symmetry; taking a straight line which passes through the first central point and extends along the third direction as a first reference line, wherein the distance from the first point to the first reference line is a, the distance from the second point to the first reference line is b, and the sum of the a-b and the a + b is less than or equal to 10%, a is more than 0, and b is more than 0; and taking a straight line which passes through the first central point and extends along the fourth direction as a second reference line, wherein the distance from the third point to the second reference line is c, and the distance from the fourth point to the second reference line is d, wherein (c-d)/(c + d) is less than or equal to 0 and less than or equal to 10 percent, c is more than 0, and d is more than 0.

The embodiment of the invention also provides a display panel which comprises the array substrate provided by the invention.

The embodiment of the invention also provides a 3D printing system which comprises the display panel provided by the invention.

Compared with the prior art, the array substrate, the display panel and the 3D printing system provided by the invention at least realize the following beneficial effects:

the switch component is a light-shielding structure, so the edge outline pattern of the switch component is a light-shielding area in the pixel group, because the center point of the edge profile graph of the switch component is close to the same point as the first center point, which is equivalent to the switch component arranged at the center of the area formed by the pixel group, and the edge profile graph of the switch component is at least a double-symmetry axis symmetry graph, therefore, the influence of the shading area in the pixel group on the first sub-pixel opening area, the second sub-pixel opening area, the third sub-pixel opening area and the fourth sub-pixel opening area is nearly the same, the light transmission area formed by the first sub-pixel opening area, the second sub-pixel opening area, the third sub-pixel opening area and the fourth sub-pixel opening area in the pixel group has better symmetry, and when the pixel group is used for 3D printing, the light-transmitting area is in the shape of an area emitting near ultraviolet short wave band, and the uniformity of 3D printing is effectively improved.

Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic view of a structure of a transmission type liquid crystal display panel of the prior art;

FIG. 2 is a schematic diagram of a 3D printing;

fig. 3 is a schematic structural diagram of an array substrate according to an embodiment of the present invention;

FIG. 4 is an enlarged view of portion C of FIG. 3;

FIG. 5 is an enlarged view of section E of FIG. 4;

FIG. 6 is an enlarged view of portion D of FIG. 3;

fig. 7 is a schematic structural diagram of another array substrate according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of another array substrate according to an embodiment of the present invention;

fig. 9a is a schematic structural diagram of another array substrate according to an embodiment of the present invention;

fig. 9b is a schematic structural diagram of another array substrate according to an embodiment of the present invention;

fig. 9c is a schematic structural diagram of another array substrate according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of another array substrate according to an embodiment of the present invention;

FIG. 11 is a schematic plan view of the portion F in FIG. 10;

FIG. 12 is a schematic cross-sectional view A-A' of the switch assembly of FIG. 11;

fig. 13 is a schematic cross-sectional view illustrating a display panel according to an embodiment of the invention;

fig. 14 is a schematic structural diagram of a 3D printing system according to an embodiment of the present invention.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Fig. 2 is a schematic diagram of a 3D printing principle, and referring to fig. 2, the backlight module 4 emitting near ultraviolet short wave band and the liquid crystal display panel 5 are used as a light source of the 3D printing system to perform printing. The liquid crystal display panel 5 uses the backlight module 4 to emit backlight and emit near ultraviolet short wave band at the same time of displaying image, the near ultraviolet short wave band is used for irradiating the liquid photosensitive resin in the liquid photosensitive resin groove 6 to solidify the liquid photosensitive resin, and the solidified liquid photosensitive resin is fixed on the forming device supporting plate 7. The liquid crystal display panel 5 may be an a-Si (amorphous silicon) panel, and is low in manufacturing cost. When 3D printing is carried out, backlight of a near ultraviolet short wave band is provided through the backlight module 4, the liquid crystal display panel 5 utilizes the backlight to display the graph of a certain section of an object to be printed and simultaneously emits the near ultraviolet short wave band, the position of a display area corresponding to the graph has the near ultraviolet short wave band to emit, and the display area without the graph has no near ultraviolet short wave band to emit. The liquid photosensitive resin tank 6 is filled with a photosensitive resin material, and the photosensitive resin material is cured and molded after being irradiated by light corresponding to the pattern. And after the graph of one section is cured, moving the forming device supporting plate 7, switching the graph of the next section by the liquid crystal display panel to display, repeating the operation to cure the graph of the other section, and continuously repeating the operation to finish the whole 3D printing process.

It can be known from the above description that, the corresponding pixel units are driven to be turned on in the liquid crystal display panel 5 to form a graph to be formed, the display area with the graph has the emission of the near ultraviolet short wave band, and the display area without the graph has no emission of the near ultraviolet short wave band, because the switch component for performing display driving in the liquid crystal display panel 5 is of a light shielding structure, and the area where the switch component is located has no emission of the near ultraviolet short wave band, the setting of the switch component in the pixel unit can affect the area shape of the near ultraviolet short wave band actually emitted in the pixel unit, thereby affecting the quality of the image displayed by the liquid crystal display panel 5, and further affecting the quality of 3D printing.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Fig. 3 is a schematic structural view of an array substrate according to an embodiment of the present invention, fig. 4 is an enlarged view of a portion C in fig. 3, fig. 5 is an enlarged view of a portion E in fig. 4, and referring to fig. 3, 4 and 5, an embodiment of the present invention provides an array substrate including:

a substrate base plate 10 and a plurality of pixel groups 20 located on the substrate base plate 10;

the pixel group 20 includes a switch assembly 21 and a first sub-pixel opening area 22a, a second sub-pixel opening area 22b, a third sub-pixel opening area 22c, and a fourth sub-pixel opening area 22d surrounding the switch assembly 21 clockwise, wherein the first sub-pixel opening area 22a and the second sub-pixel opening area 22b include a first common edge 23a therebetween, the second sub-pixel opening area 22b and the third sub-pixel opening area 22c include a second common edge 23b therebetween, the third sub-pixel opening area 22c and the fourth sub-pixel opening area 22d include a third common edge 23c therebetween, the fourth sub-pixel opening area 22d and the first sub-pixel opening area 22a include a fourth common edge 23d therebetween, the first common edge 23a and the third common edge 23c extend in the first direction X, the second common edge 23b and the fourth common edge 23d extend in the second direction Y, and the extension lines of the first common edge 23a, the second common edge 23b, the third common edge 23c and the fourth common edge 23d intersect at the first center point 24, and the first direction X intersects with the second direction Y;

the edge profile of the switch assembly 21 comprises at least a first axis of symmetry L1 extending in a third direction a and a second axis of symmetry L2 extending in a fourth direction B, the third direction a and the fourth direction B intersecting;

the edge profile pattern of the switch assembly 21 includes a first point D1 and a second point D2 symmetrical along a first axis of symmetry L1, a third point D3 and a fourth point D4 symmetrical along a second axis of symmetry L2;

taking a straight line which passes through the first central point 24 and extends along the third direction A as a first reference line L3, the distance from the first point D1 to the first reference line L3 is a, and the distance from the second point D2 to the first reference line L3 is b, wherein | (a-b)/(a + b) | is less than or equal to 0 and less than or equal to 10%, a is more than 0, and b is more than 0;

a straight line passing through the first center point 24 and extending along the fourth direction B is taken as a second reference line L4, the distance from the third point D3 to the second reference line L4 is c, and the distance from the fourth point D4 to the second reference line L4 is D, wherein | (c-D)/(c + D) | is less than or equal to 0 and less than or equal to 10%, c is more than 0, and D is more than 0.

Specifically, with continued reference to fig. 3, 4 and 5, the extension lines of the first common edge 23a, the second common edge 23b, the third common edge 23c and the fourth common edge 23d are intersected at a first center point 24, and the first center point 24 is a center point of a graph formed among edge contour graphs of the first sub-pixel opening area 22a, the second sub-pixel opening area 22b, the third sub-pixel opening area 22c and the fourth sub-pixel opening area 22d in the pixel group 20.

The edge profile of the switch module 21 comprises at least a first axis of symmetry L1 and a second axis of symmetry L2, the intersection of the first axis of symmetry L1 extending in the third direction a and the second axis of symmetry L2 extending in the fourth direction B being the centre point of the edge profile of the switch module 21.

The first point D1 and the second point D2 are any two points of the edge profile of the switch assembly 21 that are symmetrical to each other along the first axis of symmetry L1, and the third point D3 and the fourth point D4 are any two points of the edge profile of the switch assembly 21 that are symmetrical to each other along the second axis of symmetry L2;

the distance from the first point D1 to the first reference line L3 is a, the distance from the second point D2 to the first reference line L3 is b, wherein, | (a-b)/(a + b) | is less than or equal to 0 and less than or equal to 10 percent, a is more than 0, and b is more than 0; and the distance from the third point D3 to the second reference line L4 is c, and the distance from the fourth point D4 to the second reference line L4 is D, wherein, | (c-D)/(c + D) | is less than or equal to 0 and less than or equal to 10%, c is more than 0, and D is more than 0. I.e. the center point of the edge profile of the switch assembly 21 is close to the same point as the first center point 24.

The switch component 21 is of a light-shielding structure, so the edge contour pattern of the switch component 21 is a light-shielding region in the pixel group 20, since the center point of the edge contour pattern of the switch component 21 is close to the same point as the first center point 24, which is equivalent to the switch component 21 disposed at the center of the region formed by the pixel group 20, and the edge contour pattern of the switch component 21 is at least a double-symmetry axis symmetry pattern, so that the influence of the light-shielding region in the pixel group 20 on the first sub-pixel opening region 22a, the second sub-pixel opening region 22b, the third sub-pixel opening region 22c, and the fourth sub-pixel opening region 22D is close to the same, the light-transmitting regions formed by the first sub-pixel opening region 22a, the second sub-pixel opening region 22b, the third sub-pixel opening region 22c, and the fourth sub-pixel opening region 22D in the pixel group 20 are more symmetrical, and thus when used for 3D printing, the light-transmitting region is in a region shape emitting a near ultraviolet, the uniformity of 3D printing is effectively improved.

Fig. 6 is an enlarged view of portion D of fig. 3, with continued reference to fig. 3 and 6, and optionally where | 0 (a-b)/(a + b) |; i (c-d)/(c + d) | 0. That is, the center point of the edge profile of the switch assembly 21 is the same as the first center point 24. At this time, the first symmetry axis L1 coincides with the first reference line L3, and the second symmetry axis L2 coincides with the second reference line L4.

It is understood that the center point of the edge contour pattern of the switch assembly 21 is not limited to be the same as the first center point 24, but in other embodiments of the present invention, the center point of the edge contour pattern of the switch assembly 21 may be offset from the first center point 24 by an error of | (a-b)/(a + b) | or less than 10%, and | (c-d)/(c + d) | or less than 10%, so as to avoid the influence of too high process requirements on the production efficiency and the production cost. When there may be a deviation in the position of the center point of the edge profile of the switch assembly 21 from the first center point 24, the first axis of symmetry L1 and the first reference line L3 do not coincide, and the second axis of symmetry L2 and the second reference line L4 do not coincide.

Fig. 7 is a schematic structural diagram of another array substrate according to an embodiment of the present invention, referring to fig. 7, optionally, wherein a first direction X is perpendicular to a second direction Y, a third direction a is perpendicular to a fourth direction B, and an included angle between the third direction a and the first direction X is θ; wherein the content of the first and second substances,

0°≤θ≤90°。

specifically, with continued reference to fig. 7, the first common edge 23a and the third common edge 23c extend along a first direction X, the second common edge 23B and the fourth common edge 23d extend along a second direction Y, the first direction X and the second direction Y are perpendicular, the edge profile of the switch assembly 21 includes at least a first axis of symmetry L1 extending along the third direction a and a second axis of symmetry L2 extending along the fourth direction B, the third direction a and the fourth direction B are perpendicular, the third direction a and the fourth direction B both pass through the intersection of the first direction X and the second direction Y, and when 0 ° < θ < 90 °, the third direction a is located between the first direction X and the second direction Y; when θ is 0 °, the third direction a is the first direction X; when θ is 90 °, the third direction a is the second direction Y. The edge profile of the switch assembly 21 is an axisymmetric pattern and includes at least two axes of symmetry, which facilitates the determination of the center point of the edge profile of the switch assembly 21, thereby positioning the center point of the edge profile of the switch assembly 21 close to the first center point 24.

Fig. 8 is a schematic structural diagram of another array substrate according to an embodiment of the present invention, referring to fig. 8, where θ is 45 °.

Specifically, with continued reference to fig. 8, the first common edge 23a and the third common edge 23c extend along a first direction X, the second common edge 23B and the fourth common edge 23D extend along a second direction Y, the first direction X is perpendicular to the second direction Y, the edge profile pattern of the switch assembly 21 at least includes a first symmetry axis L1 extending along the third direction a and a second symmetry axis L2 extending along the fourth direction B, the third direction a is perpendicular to the fourth direction B, and the third direction a is 45 ° to the first direction X, so that the difference between the width of the edge profile pattern of the switch assembly 21 in the first direction X and the width thereof in the second direction Y is reduced, so that the width of the light shielding region formed by the switch assembly 21 in the first direction X and the width thereof in the second direction Y are closer to each other, and the array substrate provided by the embodiment of the present invention is used for 3D printing, the uniformity of 3D printing is effectively improved.

Optionally, the edge contour pattern shape of the switch assembly includes any one of a rectangle, a diamond, a circle, a regular hexagon, a regular octagon, and an ellipse.

Fig. 9a is a schematic structural diagram of another array substrate according to an embodiment of the present invention, fig. 9b is a schematic structural diagram of another array substrate according to an embodiment of the present invention, fig. 9c is a schematic structural diagram of another array substrate according to an embodiment of the present invention, and referring to fig. 3, fig. 7 and fig. 9a to 9c, an edge contour pattern of the switch element 21 may be a diamond shape, an edge contour pattern of the switch element 21 may also be an oval shape, an edge contour pattern of the switch element 21 may also be a square shape, a regular octagon shape or a polygon shape, where the edge contour pattern of the switch element 21 is not limited to one of a diamond shape, an oval shape, a square shape, a regular octagon shape and a polygon shape, in other embodiments of the present invention, the shape of the edge profile pattern of the switch assembly may also be rectangular, circular, or regular hexagonal, or any axisymmetric pattern including at least two axes of symmetry.

It should be noted that the array substrate provided in the embodiment of the present invention includes a plurality of pixel groups, where all the pixel groups may be arranged in an array in the whole display area, each pixel group includes a switch component and four sub-pixel opening areas surrounding the switch component clockwise, the switch component drives one of the sub-pixel opening areas to perform image display based on the backlight light source, the structure of the pixel group is only to illustrate the positional relationship between the switch component and the sub-pixel opening area, and the first sub-pixel opening area in the pixel group is multiplexed as the second sub-pixel opening area or the third sub-pixel opening area or the fourth sub-pixel opening area in other pixel groups.

Fig. 10 is a schematic structural diagram of another array substrate provided in an embodiment of the present invention, and with reference to fig. 10, optionally, the array substrate provided in the embodiment of the present invention further includes: a display area AA;

and a plurality of dummy switch elements 25, wherein the dummy switch elements 25 are located at the edge of the display area AA, and the shapes of all the sub-pixel opening areas 22 in the display area AA are the same.

Specifically, with continued reference to fig. 10, the sub-pixel opening areas 22 are arranged in the display area AA in an array, the switch elements 21 in the pixel group 20 drive one of the sub-pixel opening areas 22 to display an image based on the backlight light source, each sub-pixel opening area 22 is provided with a switch element 21 for driving the sub-pixel opening area 22 to display an image based on the backlight light source, and the position relationship between each switch element 21 and the sub-pixel opening area 22 driven by the switch element 21 is the same, so that the periphery of all the switch elements 21 in the display area AA is provided with four sub-pixel opening areas 22 surrounding the switch element 21 except the switch elements 21 at the edge of the display area AA. The periphery of the sub-pixel opening area 22 where a certain number of sub-pixel opening areas 22 exist in the sub-pixel opening area 22 located at the edge of the display area AA is not provided with four switch elements 21 surrounding the sub-pixel opening area 22, and the peripheries of the other sub-pixel opening areas 22 are provided with four switch elements 21 surrounding the sub-pixel opening area 22, so that the patterns of the sub-pixel opening areas 22 in the array substrate are not uniform.

A plurality of dummy switch elements 25 are disposed at the edge of the display area AA, that is, the dummy switch elements 25 are disposed at the periphery of the sub-pixel opening area 22 not surrounded by the four switch elements 21 among the sub-pixel opening areas 22 at the edge of the display area AA. The dummy switch assembly 25 and the switch assembly 21 have the same structure, but the dummy switch assembly 25 does not drive any of the sub-pixel opening areas 22 for image display based on the backlight light source. The shape of the edge contour pattern of the virtual switch assembly 25 is the same as that of the edge contour pattern of the switch assembly 21, and the positional relationship between the virtual switch assembly 25 and the sub-pixel opening area 22 adjacent thereto is also the same as that between the switch assembly 21 and the sub-pixel opening area 22 adjacent thereto, so that the shapes of all the sub-pixel opening areas 22 in the display area AA are the same, thereby improving the quality of the display image of the display panel, and effectively improving the quality of 3D printing when used for 3D printing.

Fig. 11 is a schematic plan view of a portion F of fig. 10, and fig. 12 is a schematic sectional view of the switching assembly of fig. 11 taken along a-a', referring to fig. 11 and 12, in the alternative, wherein the switching assembly 21 includes at least the thin film transistor 30;

the thin film transistor 30 includes a gate electrode 31, a source electrode 32, a drain electrode 33, and an active layer 34.

Specifically, with continued reference to fig. 8 and 9, the switching element 21 includes at least a thin film transistor 30, the thin film transistor 30 includes a gate electrode 31, and a source electrode 32, a drain electrode 33 and an active layer 34, the gate electrode 31 is connected to the scan line G, and the source electrode 32 is connected to the data line S.

With continued reference to fig. 11 and 12, optionally, wherein the switch assembly 21 further includes a via 35;

the drain electrode 33 of the thin film transistor 30 is electrically connected to the pixel electrode 36 in the sub-pixel opening area 22 through the via hole 35.

In order to avoid light leakage, the scanning lines G and the data lines S are subjected to shading treatment, the via holes 35 are also subjected to shading treatment, and the vertical projection of the via holes 35 on the substrate base plate 10 is at least partially positioned in the vertical projection of the scanning lines G on the substrate base plate 10, so that the area of the edge outline graph of the switch assembly 21 can be reduced, the area of the sub-pixel opening area 22 is increased, the opening ratio of the display panel is improved, and the 3D printing quality is effectively improved when the display panel is used for 3D printing.

With continued reference to fig. 11 and 12, optionally, wherein the switch assembly 21 further includes a light shielding structure 37, the light shielding structure 37 and the via 35 at least partially overlap each other in a direction perpendicular to the plane of the substrate base plate 10.

The arrangement can shield the light emitted to the via hole 37, thereby avoiding the refraction and reflection phenomena caused by the light reflected by the metal electrode in the via hole 37 and effectively solving the problem of light leakage.

Optionally, the material of the light shielding structure 37 includes one or more of metal and black resin.

When the material of the light shielding structure 37 is a metal material, the light shielding effect is good and high temperature resistance is achieved. When the light-shielding structure 37 is made of black resin, the light-shielding structure 37 can be formed by directly using an exposure process, and the process is simple.

An embodiment of the invention provides a display panel, which includes the array substrate.

Referring to fig. 13, fig. 13 is a schematic cross-sectional structure view of a display panel according to an embodiment of the present invention, where the display panel provided in fig. 13 includes an array substrate 40 according to any one of the embodiments of the present invention; further includes a first substrate 50 disposed opposite to the array substrate 40; a liquid crystal layer 60 between the array substrate 40 and the first substrate 50; an upper grid polarizer 71 and a lower grid polarizer 72, wherein the upper grid polarizer 71 is located on one side of the first substrate 50 away from the array substrate 40, and the lower grid polarizer 72 is located on one side of the array substrate 40 away from the first substrate 50.

In the embodiment of the invention, the display panel may not include the color resistance layer or only include the blue color resistance layer. The upper linear grid polarizer 71 and the lower linear grid polarizer 72 may both include a plurality of metal grid bars distributed in parallel, and the extending direction of the metal grid bars in the upper linear grid polarizer 71 is perpendicular to the extending direction of the metal grid bars in the lower linear grid polarizer 72, so that the polarization directions of the upper linear grid polarizer 71 and the lower linear grid polarizer 72 are perpendicular, and the display panel may display black.

The array substrate 40 has a plurality of switching elements 21 on a side facing the first substrate 50, wherein the pixel electrodes are driven by thin film transistors according to signals from the scan lines, and a potential difference is formed between the pixel electrodes and the common electrode according to signals from the data lines, so as to drive the liquid crystal molecules to change state, thereby the liquid crystal display panel emits a near ultraviolet short wave band while displaying images based on the backlight module.

The switching element 21 may be used to drive the pixel region for image display based on the backlight light source. A side of the first substrate 50 facing the array substrate 40 may be provided with a black matrix 51.

Since the display panel does not comprise the color resistance layer or only comprises the blue color resistance layer, all pixel regions of the liquid crystal display panel can transmit the near ultraviolet short wave band of 385nm-420nm, and when the display panel is used for 3D printing, the curing efficiency of photosensitive resin is improved.

It should be noted that, as will be apparent to those skilled in the art, the display panel of the present application may include other known structures besides the array substrate.

An embodiment of the present invention provides a 3D printing system, including the display panel as described above.

Referring to fig. 14, fig. 14 is a schematic structural diagram of a 3D printing system according to an embodiment of the present invention, where the 3D printing system includes a display panel 100 according to an embodiment of the present invention.

Specifically, the 3D printing system includes a liquid photosensitive material in a reagent tank 300, a display device, and a carrying device 400. The display device includes a display panel 100 and a backlight module 200 matched with the display panel. The structure of the display panel 100 can refer to the above embodiments, and is not described herein again. The liquid photosensitive material may be a liquid photosensitive resin.

The display device displays images of different sections of the target to be printed; the light beam emerging from the image is used to solidify a predetermined area of the photosensitive material in a liquid state. The wavelength of the light correspondingly emitted from the image is 385nm-420nm near ultraviolet short wave band. The carrier 400 is located in the liquid photosensitive material, and the cured photosensitive material is fixed on the carrier 400.

As shown in fig. 14, the display panel 100 may be located right below the liquid photosensitive material and vertically irradiate upwards, and in other embodiments, may also be located right above the liquid photosensitive material and vertically irradiate downwards, or located at the side of the liquid photosensitive material and horizontally irradiate. Different irradiation directions need to be correspondingly set with the moving direction of the bearing device.

It should be noted that, as will be apparent to those skilled in the art, the 3D printing system of the present application may include other known structures besides the display panel.

According to the embodiment, the array substrate, the display panel and the 3D printing system provided by the invention at least realize the following beneficial effects:

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. An array substrate, comprising:

the pixel array comprises a substrate base plate and a plurality of pixel groups positioned on the substrate base plate;

the pixel group comprises a switch component and a first sub-pixel opening area, a second sub-pixel opening area, a third sub-pixel opening area and a fourth sub-pixel opening area which surround the switch component clockwise, wherein a first common edge is arranged between the first sub-pixel opening area and the second sub-pixel opening area, a second common edge is arranged between the second sub-pixel opening area and the third sub-pixel opening area, a third common edge is arranged between the third sub-pixel opening area and the fourth sub-pixel opening area, a fourth common edge is arranged between the fourth sub-pixel opening area and the first sub-pixel opening area, the first common edge and the third common edge extend along a first direction, the second common edge and the fourth common edge extend along a second direction, and the first common edge, the second common edge, Extension lines of the third common edge and the fourth common edge commonly intersect at a first center point, and the first direction and the second direction intersect;

the edge profile of the switch assembly includes at least a first axis of symmetry extending in a third direction and a second axis of symmetry extending in a fourth direction, the third direction intersecting the fourth direction;

the edge profile pattern of the switch assembly includes first and second points symmetrical along the first axis of symmetry, and third and fourth points symmetrical along the second axis of symmetry;

taking a straight line which passes through the first central point and extends along the third direction as a first reference line, wherein the distance from the first point to the first reference line is a, the distance from the second point to the first reference line is b, and the sum of (a-b)/(a + b) is less than or equal to 10%, a is more than or equal to 0, and b is more than or equal to 0;

taking a straight line which passes through the first central point and extends along the fourth direction as a second reference line, wherein the distance from the third point to the second reference line is c, and the distance from the fourth point to the second reference line is d, wherein (c-d)/(c + d) is less than or equal to 10%, c is more than 0, and d is more than 0;

and the light transmission areas formed by the first sub-pixel opening area, the second sub-pixel opening area, the third sub-pixel opening area and the fourth sub-pixel opening area are in the shape of an area emitting near ultraviolet short wave bands when being used for 3D printing.

2. The array substrate of claim 1,

|(a-b)/(a+b)|＝0；|(c-d)/(c+d)|＝0。

3. the array substrate of claim 1,

the first direction is perpendicular to the second direction, the third direction is perpendicular to the fourth direction, and an included angle formed between the third direction and the first direction is theta; wherein the content of the first and second substances,

0°≤θ≤90°。

4. the array substrate of claim 3,

θ＝45°。

5. the array substrate of claim 1, further comprising:

a display area;

the plurality of virtual switch assemblies are positioned at the edge of the display area, and the shapes of all sub-pixel opening areas in the display area are the same.

6. The array substrate of claim 1,

the switch assembly at least comprises a thin film transistor;

the thin film transistor includes a gate electrode, a source electrode, a drain electrode, and an active layer.

7. The array substrate of claim 6,

the switch assembly further comprises a via;

and the drain electrode of the thin film transistor is electrically connected with the pixel electrode in the sub-pixel opening area through the through hole.

8. The array substrate of claim 7,

the switch component further comprises a light shielding structure, and the light shielding structure and the through hole are at least partially overlapped with each other in the direction perpendicular to the plane of the substrate base plate.

9. The array substrate of claim 8,

the material of the shading structure comprises one or more of metal and black resin.

10. The array substrate of claim 1,

the edge profile pattern shape of the switch assembly includes any one of a rectangle, a diamond, a circle, a regular hexagon, a regular octagon, and an ellipse.

11. A display panel comprising the array substrate according to any one of claims 1 to 10.

12. A 3D printing system comprising the display panel of claim 11.