CN108919548B

CN108919548B - Liquid crystal panel, 3D printing device and printing method of display panel for 3D printing

Info

Publication number: CN108919548B
Application number: CN201810778590.9A
Authority: CN
Inventors: 陈湃杰; 张永梅; 曾强; 王臣
Original assignee: Tianma Microelectronics Co Ltd
Current assignee: Tianma Microelectronics Co Ltd
Priority date: 2018-07-16
Filing date: 2018-07-16
Publication date: 2021-08-24
Anticipated expiration: 2038-07-16
Also published as: CN108919548A

Abstract

The invention discloses a liquid crystal panel, a 3D printing device and a printing method of a display panel for 3D printing, which belong to the technical field of display and comprise the following steps: a plurality of pixels arranged in a matrix along a first direction and a second direction, each pixel including a first sub-pixel, a second sub-pixel, and a third sub-pixel; the pixel comprises a light shielding part and a light transmitting part, wherein the light shielding part and the light transmitting part comprise a first edge and a second edge which are adjacent; the first edge extends along a third direction, and the third direction intersects with the first direction and the second direction; the second edge extends in a fourth direction that intersects the first direction and the second direction; the third direction and the fourth direction also intersect. The light shielding part and the light transmission part cover the area where the plurality of pixels are located, so that saw teeth at the edges of oblique lines or arc lines are obviously reduced when target patterns with oblique lines or arc lines or other irregular edges are displayed, meanwhile, the transmittance of the pixels is increased, and the printing efficiency is improved.

Description

Liquid crystal panel, 3D printing device and printing method of display panel for 3D printing

Technical Field

The invention relates to the technical field of display, in particular to a liquid crystal panel, a 3D printing device and a printing method of a display panel for 3D printing.

Background

Referring to fig. 1, fig. 1 is a schematic diagram of printing a target pattern by using a 3D printing method using a liquid crystal panel according to the related art. As shown in fig. 1, researchers have found that when a display panel provided by the prior art is printed in 3D, since the conventional pixel size is generally rectangular, when a product having a shape of a slant line or an arc line is printed, sawteeth exist at the edge of the slant line or the arc line (the area drawn by the dotted line in fig. 1 is sawteeth). This phenomenon is more pronounced when the layer thickness of the 3D printing is thicker. In addition, the transmittance of the display panel provided by the prior art is low, which affects the printing efficiency of 3D printing.

Disclosure of Invention

In view of the above, the present invention provides a liquid crystal panel, including: a display area; the display area comprises a plurality of pixels, the plurality of pixels are arranged in a matrix along a first direction and a second direction, and each pixel comprises a first sub-pixel, a second sub-pixel and a third sub-pixel; the pixel comprises a light shielding part and a light transmitting part, wherein the light shielding part and the light transmitting part comprise a first edge and a second edge which are adjacent; the first edge extends along a third direction, and the third direction intersects with the first direction and the second direction; the second edge extends in a fourth direction that intersects the first direction and the second direction; the third direction and the fourth direction also intersect.

The invention also provides a 3D printing device which comprises the liquid crystal panel provided by the invention.

The invention also provides a printing method of the display panel for 3D printing, which comprises the following steps: a liquid crystal panel, the liquid crystal panel comprising: a display area; the display area comprises a plurality of pixels, the plurality of pixels are arranged in a matrix along a first direction and a second direction, and each pixel comprises a first sub-pixel, a second sub-pixel and a third sub-pixel; the pixel comprises a light shielding part and a light transmitting part, wherein the light shielding part and the light transmitting part comprise a first edge and a second edge which are adjacent; the first edge extends along a third direction, and the third direction intersects with the first direction and the second direction; the second edge extends in a fourth direction that intersects the first direction and the second direction; the third direction and the fourth direction also intersect. The printing method comprises the following steps: the liquid crystal panel displays a target pattern; the light source irradiates the liquid crystal panel, and part of light irradiates the printer platform through the liquid crystal panel with the target pattern; the printer platform forms a target pattern.

Compared with the prior art, the liquid crystal panel, the 3D printing device and the printing method of the display panel for 3D printing provided by the invention at least realize the following beneficial effects:

according to the liquid crystal panel provided by the embodiment of the invention, through the arrangement of the light shielding part and the light transmitting part, saw teeth at the edges of oblique lines or arc lines can be obviously reduced when target patterns with the oblique lines or the arc lines or other irregular edges are displayed, meanwhile, the transmittance of pixels is increased, and the printing efficiency is 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 illustration of printing a target pattern using a printing method provided in the prior art;

fig. 2 is a schematic plan view of a liquid crystal panel according to an embodiment of the present invention;

FIG. 3 is a schematic view of edge printing using the liquid crystal panel provided in FIG. 2;

FIG. 4 is a schematic plane structure diagram of another liquid crystal panel provided by the embodiment of the present invention;

FIG. 5 is a schematic view of edge printing using the liquid crystal panel provided in FIG. 4;

FIG. 6 is a schematic plane structure diagram of another liquid crystal panel according to an embodiment of the present invention;

FIG. 7 is a schematic plane structure diagram of another liquid crystal panel according to an embodiment of the present invention;

FIG. 8 is a schematic cross-sectional view of a liquid crystal panel according to the present invention;

fig. 9 is a schematic plan view of an array substrate according to the present invention;

FIG. 10 is another schematic view of edge printing using the liquid crystal panel provided in FIG. 4;

FIG. 11 is a schematic view of a cross-sectional view along section AA' of FIG. 10;

FIG. 12 is a schematic view of another cross-sectional configuration taken along section AA' of FIG. 10;

FIG. 13 is a further schematic view of edge printing using the liquid crystal panel provided in FIG. 4;

FIG. 14 is a further schematic view of edge printing using the liquid crystal panel provided in FIG. 4;

fig. 15 is a 3D printing apparatus according to an embodiment of the present invention;

FIG. 16 is a flow chart of a printing method provided by an embodiment of the invention;

FIG. 17 is a schematic diagram of printing a target pattern using a printing method provided by an embodiment of the 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.

Referring to fig. 2 to fig. 3, fig. 2 is a schematic plan view of a liquid crystal panel according to an embodiment of the present invention, and fig. 3 is a schematic diagram of edge printing performed by using the liquid crystal panel shown in fig. 2. As shown in fig. 2-3, the present invention provides a liquid crystal panel 10, a display area a; the display area a includes a plurality of pixels 1, the plurality of pixels 1 being arranged in a matrix along a first direction X1 and a second direction X2, each pixel 1 including a first sub-pixel 11, a second sub-pixel 12, and a third sub-pixel 13; the pixel 1 includes a light-shielding portion 2 and a light-transmitting portion 3, the light-shielding portion 2 and the light-transmitting portion 3 including adjacent first and second edges B1 and B2; the first edge B1 extends along a third direction X3, the third direction X3 intersecting the first direction X1 and the second direction X2; the second edge B2 extends along a fourth direction X4, the fourth direction X4 intersecting the first direction X1 and the second direction X2; the third direction X3 and the fourth direction X4 also intersect.

It should be understood that, in the present embodiment, only one pixel of the liquid crystal panel includes three sub-pixels as an example, and the present invention is not limited to this embodiment.

Specifically, as shown in fig. 2 to 3, the display area a includes a plurality of pixels 1, each pixel 1 includes a first sub-pixel 11, a second sub-pixel 12, and a third sub-pixel 13, the pixel 1 further includes a light shielding portion 2 and a light transmitting portion 3, the light shielding portion 2 has a triangular shape, and the light shielding portion 2 spans the area where the first sub-pixel 11, the second sub-pixel 12, and the third sub-pixel 13 are located. The light-shielding portion 2 serves to shield light when light emitted from a pixel passes through a region where the light-shielding portion 2 is located, and the light-transmitting portion 3 serves to transmit light when light emitted from a pixel passes through a region where the light-transmitting portion 3 is located. Referring to fig. 3, when the oblique line edge of the target pattern is displayed, the first sub-pixel 11 is turned off, and only the second sub-pixel 12 and the third sub-pixel 13 are turned on, in which case, the region on the liquid crystal panel 10 that can pass light only includes the regions at the second sub-pixel 12 and the third sub-pixel 13 covered by the light-transmitting portion 3, and in the region X where the oblique line is located, only the region C of each pixel can be displayed, that is, the sawtooth formed by each pixel is half the area of the rectangular region formed by the original three sub-pixels, and becomes the small triangle where the region C is located, and the area of the sawtooth is significantly reduced. It should be noted that the oblique line edge of the target pattern shown in fig. 3 is on the left, so the first sub-pixel 11 is exemplarily described as being turned off, and in the actual use process, the specific turned-off sub-pixel is determined according to the position of the oblique line or arc line or other irregular edge (e.g., S-shaped edge, etc.) of the target pattern, which is not particularly limited by the present invention.

The liquid crystal panel provided by the embodiment can remarkably reduce saw teeth generated at the edges of oblique lines or arc lines when a target pattern with the oblique lines or arc lines or other irregular edges (such as S-shaped edges and the like) is displayed by arranging the light shielding part and the light transmitting part, and simultaneously, the transmittance of pixels is increased, and the printing efficiency is improved.

Alternatively, referring to fig. 4 to 5, fig. 4 is a schematic plan view of another liquid crystal panel provided in an embodiment of the present invention, and fig. 5 is a schematic diagram of performing edge printing by using the liquid crystal panel provided in fig. 4. The light shielding portion 2 includes a first light shielding portion 21 and a second light shielding portion 22; light-transmitting portion 3 includes first light-transmitting portion 31 and second light-transmitting portion 32. It is understood that the second light-shielding portion 21 may be made of the same material and the same color as the first light-shielding portion, or may be made of a different material and a different color; similarly, the same material or different materials may be used for the first light transmission portion 31 and the second light transmission portion 32, as long as they can transmit light, and the present invention is not particularly limited thereto.

Specifically, in the present embodiment, the first light-shielding portion 21 and the second light-shielding portion 22 are provided in the region where one pixel is located, and accordingly, the first light-transmitting portion 31 and the second light-transmitting portion 32 are also provided. In the case where the first sub-pixel 11 is turned off and only the second sub-pixel 12 and the third sub-pixel 13 are turned on when the diagonal edge of the target pattern is displayed, the region through which light can pass on the liquid crystal panel 10 includes only the regions covered with the first light-transmitting portion 31 and the second light-transmitting portion 32, and only the region D can be displayed at the position of the diagonal edge.

It should be noted that the oblique line edge of the target pattern shown in fig. 5 is on the left, so the first sub-pixel 11 is taken as an example for illustration, and in the actual use process, the specific closed sub-pixel is determined according to the position of the oblique line or arc line or other irregular edge of the target pattern, which is not limited in the present invention.

The liquid crystal panel provided by the embodiment can remarkably reduce saw teeth appearing at edges of oblique lines or arc lines when target patterns with oblique lines or arc lines or other irregular edges are displayed by arranging the light shielding part and the light transmitting part, and meanwhile, the transmittance of pixels is increased, and the printing efficiency is improved. In addition, two shading parts are arranged, more figures with irregular edges can be printed, and the printing effect is better.

Optionally, with continued reference to fig. 4-5, the first sub-pixel 11, the second sub-pixel 12, and the third sub-pixel 13 are located in a rectangular area; the rectangle is divided into a first sub-area P1, a second sub-area P2, a third sub-area P3 and a fourth sub-area P4 by two diagonals of the rectangle, the first sub-area P1 and the second sub-area P2 are oppositely arranged, and the third sub-area P3 and the fourth sub-area P4 are oppositely arranged; the first light shielding portion 21 covers the first sub-area P1; the second light shielding portion 22 covers the second sub-area P2; the first light-transmitting portion 31 covers the third sub-region P3; the second light-transmitting portion 32 covers the fourth sub-area P4.

Optionally, with continuing reference to fig. 4-5, the first sub-area P1 includes at least a portion of the first sub-pixel 11, at least a portion of the second sub-pixel 12, and at least a portion of the third sub-pixel 13; the second sub-area P2 comprises at least part of the first sub-pixel 11, at least part of the second sub-pixel 12, at least part of the third sub-pixel 13.

In the liquid crystal panel provided by this embodiment, the rectangular area formed by the three sub-pixels is divided into four areas by the diagonal lines, wherein the first light-shielding portion and the second light-shielding portion both span the area where the three sub-pixels are located, so that the jaggy at the edge of a slant line or an arc line can be significantly reduced when a target pattern with the slant line or the arc line or other irregular edges is displayed, and meanwhile, the transmittance of the pixels is increased, and the printing efficiency is improved.

Optionally, with continued reference to fig. 4-5, an edge of the first light shielding portion 21 adjacent to the first light transmitting portion 31 is a first edge B1; the edge of the first light shielding portion 21 adjacent to the second light transmitting portion 32 is a second edge B2; the edge of the second light-shielding portion 22 adjacent to the first light-transmitting portion is a third edge B3; the edge of the second light shielding portion 22 adjacent to the second transmissive portion 32 is a fourth edge B4; the first edge B1 and the fourth edge B4 extend along the third direction X3; the second edge B2 and the third edge B3 extend along the fourth direction X4.

Optionally, referring to fig. 6, fig. 6 is a schematic plan view of another liquid crystal panel according to an embodiment of the present invention. As shown in fig. 6, the first light shielding portion 21 further includes a fifth edge B5, the fifth edge B5 extending in the first direction X1, the second light shielding portion 22 further includes a sixth edge B6, and the sixth edge B6 extending in the first direction X1.

Specifically, as shown in fig. 6, the width of each sub-pixel along the first direction is L1, and the spacing between the first light-shielding portion 21 and the second light-shielding portion 22 is D1, where D1 satisfies: d1 is less than or equal to L1. If D1 is larger than L1, the shading area of the shading area is too small to smooth the edges.

Optionally, referring to fig. 7, fig. 7 is a schematic plan view of another liquid crystal panel according to an embodiment of the present invention. As shown in fig. 7, the first light-shielding portion 21 further includes an extension portion 20, the extension portion 20 extending in the second direction X2; the first light-shielding portion 21 and the second light-shielding portion 22 are connected by the extension portion 20. That is, the first light-shielding portion 21 and the second light-shielding portion 22 are connected by the extension portion 20.

Specifically, as shown in fig. 7, each sub-pixel has a width L1 in the first direction, and the extension section 20 has a width L2 in the first direction, where L2 satisfies: l2 is less than or equal to L1. If L2 is larger than L1, the entire second sub-pixel is covered by the light-shielding region, resulting in an excessively small light-transmitting area and poor printing effect.

Alternatively, referring to fig. 8 to 10, fig. 8 is a schematic cross-sectional structure diagram of a liquid crystal panel provided by the present invention, fig. 9 is a schematic plan structure diagram of an array substrate provided by the present invention, and fig. 10 is another schematic diagram of performing edge printing by using the liquid crystal panel provided by fig. 4. As shown in fig. 8 to 10, an array substrate 100, a counter substrate 200 disposed opposite to the array substrate 100; a plurality of scanning lines 5 extending along a first direction X1 and a plurality of data lines 6 extending along a second direction X2 are disposed on the display area a on the array substrate 100; a plurality of scanning lines 5 and a plurality of data lines 6 intersect to define a plurality of sub-pixels; the counter substrate 200 is provided with a light-shielding portion 2 and a light-transmitting portion 3.

Alternatively, as shown in fig. 10, the light shielding portion 2 is a color resist, and the light transmitting portion 3 is an organic material.

Alternatively, as shown in fig. 10, the light shielding portion 2 is a red color resist, a green color resist, or a yellow color resist, and the light transmitting portion 3 is made of a transparent organic material.

Specifically, the light shielding portion 2 provided in this embodiment may adopt a color resistor, for example, a red color resistor, a green color resistor, or a yellow color resistor. This is because the light source used in 3D printing is usually short-wavelength visible light, such as blue light, and in this case, a color resistor with a longer wavelength of transmitted light is used, i.e., the light can be blocked.

It is understood that the liquid crystal panel provided by the present invention may use different colors for the light shielding portions 2 in different light shielding regions (as shown in fig. 5), or use the same color (as shown in fig. 10), and the present invention is not limited thereto.

Optionally, referring to fig. 11, fig. 11 is a schematic cross-sectional view of the cross-section along AA' in fig. 10. As shown in fig. 11, the counter substrate includes a glass substrate 101, and a black matrix 102 is provided on the glass substrate 101. The black matrix 102 is disposed corresponding to the edge of the sub-pixel and is used for blocking the poor display at the edge of the sub-pixel. The light shielding portion 2 is formed by stacking color resists of different colors. Specifically, the light shielding portion 2 may be formed by laminating a first color resist 111 and a second color resist 112, and the first color resist 111 and the second color resist 112 may have different colors. Specifically, the two kinds of color resistances are both provided corresponding to three sub-pixel portions. The light transmission part is made of an organic material 120, the thickness of the organic material reaches micrometers, the organic material can flatten one surface of the opposite substrate adjacent to the array substrate, the alignment uniformity of liquid crystals is improved, the organic material and the color resistance are the same, the thickness of a liquid crystal box of the finally formed liquid crystal panel is equal, the optical path of light in the liquid crystal layer is the same, and the improvement of display quality is facilitated. It should be noted that, in this embodiment, only fig. 11 is taken as an example for description, in practical applications, the light shielding portion may be formed by one or more than two color resists, and the invention is not limited to the specific color resist color and the type of the color resist.

Optionally, please continue to refer to fig. 10 and fig. 12, fig. 12 is a schematic cross-sectional view of fig. 10 taken along the AA'. The counter substrate includes a glass substrate 101, and a black matrix 102 is provided on the glass substrate 101, and the black matrix 102 is provided corresponding to an edge of the sub-pixel and is used for blocking a display failure at the edge of the sub-pixel. The light shielding portion 2 is made of the same material as the black matrix. That is, the light-shielding black matrix 110 is formed at the same time as the black matrix 102, and the light-shielding black matrix 110 is partially overlapped with all of the three sub-pixels. The light transmission part is made of an organic material 120, the thickness of the organic material reaches micrometers, the organic material can flatten one surface of the opposite substrate adjacent to the array substrate, the alignment uniformity of liquid crystals is improved, the organic material and the color resistance are the same, the thickness of a liquid crystal box of the finally formed liquid crystal panel is equal, the optical path of light in the liquid crystal layer is the same, and the improvement of display quality is facilitated.

In the embodiment, the shading part is the same as the black matrix material, so that the process flow can be reduced, and the manufacturing efficiency can be improved.

It should be noted that, this embodiment is only described by taking the black matrix as an example, and the most important role of the light shielding portion in the liquid crystal panel provided in this embodiment is to shield light, so that materials capable of shielding light, such as a color resist or a black matrix, may be used, and the present invention is not limited to this.

Optionally, referring to fig. 10, the light-transmitting portion 3 is made of a transparent organic material.

In the present embodiment, the transparent organic material is merely used as an example for explanation, and the specific material used for the light-transmitting portion 3 in the liquid crystal panel according to the present invention is not particularly limited.

Optionally, referring to fig. 13, fig. 13 is another schematic diagram of performing edge printing by using the liquid crystal panel provided in fig. 4. Specifically, when the oblique line edge of the target pattern is displayed, the third sub-pixel 13 is turned off, and only the first sub-pixel 11 and the second sub-pixel 12 are turned on, and in this case, the region through which light can pass on the liquid crystal panel 10 includes only the region covered with the light-transmitting portion 3, and only the region E at the position of the oblique line can be displayed.

Optionally, referring to fig. 14, fig. 14 is another schematic diagram of performing edge printing by using the liquid crystal panel provided in fig. 4. Specifically, when the straight edge of the target pattern is displayed, the first subpixel 11, the second subpixel 12, and only the third subpixel 13 are turned off, and in this case, the straight edge can be normally printed.

It should be noted that, in this embodiment, only fig. 14 illustrates a case of printing a regular edge, and the printing regular edge may also close the second sub-pixel 12 and the third sub-pixel 13 and only open the first sub-pixel 11 according to actual needs, which is not particularly limited by the present invention.

Referring to fig. 15, fig. 15 is a 3D printing apparatus according to an embodiment of the present invention. As shown in fig. 15, the present invention further provides a 3D printing apparatus, which includes a light source 1000, a printer platform 2000 and a liquid crystal panel 3000; the liquid crystal panel 3000 is located between the light source 1000 and the printer stage 2000.

Referring to fig. 2 and fig. 16, fig. 16 is a flowchart of a printing method according to an embodiment of the present invention. As shown in fig. 2 and 16, the present invention also provides a printing method of a display panel for 3D printing, including: liquid crystal panel 10, liquid crystal panel 10 includes: a display area A; the display area a includes a plurality of pixels 1, the plurality of pixels 1 being arranged in a matrix along a first direction X1 and a second direction X2, each pixel 1 including a first sub-pixel 11, a second sub-pixel 12, and a third sub-pixel 13; the pixel 1 includes a light-shielding portion 2 and a light-transmitting portion 3, the light-shielding portion 2 and the light-transmitting portion 3 including adjacent first and second edges B1 and B2; the first edge B1 extends along a third direction X3, the third direction X3 intersecting the first direction X1 and the second direction X2; the second edge B2 extends along a fourth direction X4, the fourth direction X4 intersecting the first direction X1 and the second direction X2; the third direction X3 and the fourth direction X4 also intersect.

The printing method comprises the following steps:

s1: the liquid crystal panel 10 displays a target pattern;

s2: the light source irradiates the liquid crystal panel 10, and part of light irradiates the printer platform through the liquid crystal panel 10 displaying the target pattern;

s3: the printer platform forms a target pattern.

Optionally, referring to fig. 17, fig. 17 is a schematic diagram of printing a target pattern by using the printing method provided by the embodiment of the invention. As shown in fig. 17, the target pattern TU includes a piece of the shaped edge Y, the shaped edge Y extending in the fifth direction X5; when the fifth direction X5 makes an angle with the third direction X3 or the fourth direction X4 smaller than the angle with the first direction X1 or the second direction X2, the first sub-pixel and the third sub-pixel of the pixel corresponding to the shaped edge Y are not turned on at the same time.

Specifically, in the printing method provided by this embodiment, when a regular edge is printed, the first sub-pixel 11 and the second sub-pixel 12 are turned off (or the second sub-pixel 12 and the third sub-pixel 13 are turned off); turning off the first sub-pixel 11 (or the third sub-pixel 13) when printing a target pattern having a slant line or an arc edge can significantly reduce jaggies occurring at the slant line or the arc edge when displaying the target pattern having the slant line or the arc or other irregular edges, and at the same time, increase the transmittance of the pixel, and improve the printing efficiency.

As can be seen from the above embodiments, the liquid crystal panel, the 3D printing apparatus, and the printing method for the display panel for 3D printing according to the present invention at least achieve the following advantages:

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. A liquid crystal panel for 3D printing is characterized by comprising:

a display area; the display area comprises a plurality of pixels, the pixels are arranged in a matrix along a first direction and a second direction, and each pixel comprises a first sub-pixel, a second sub-pixel and a third sub-pixel;

the pixel includes a light shielding portion and a light transmitting portion including adjacent first and second edges; the first edge extends along a third direction that intersects the first direction and the second direction; the second edge extends in a fourth direction that intersects the first direction and the second direction; the third direction and the fourth direction also intersect;

the light shielding part comprises a first light shielding part and a second light shielding part, and the light transmission part comprises a first light transmission part and a second light transmission part; the first sub-pixel, the second sub-pixel and the third sub-pixel are positioned in a rectangular area; the rectangle is divided into a first sub-area, a second sub-area, a third sub-area and a fourth sub-area by two diagonals of the rectangle, the first sub-area and the second sub-area are arranged oppositely, and the third sub-area and the fourth sub-area are arranged oppositely;

the first light shielding part covers the first sub-area, the second light shielding part covers the second sub-area, the first light-transmitting part covers the third sub-area, and the second light-transmitting part covers the fourth sub-area.

2. The liquid crystal panel according to claim 1, characterized in that:

the first sub-area comprises at least part of the first sub-pixel, at least part of the second sub-pixel and at least part of the third sub-pixel; the second sub-area comprises at least part of the first sub-pixel, at least part of the second sub-pixel and at least part of the third sub-pixel.

3. The liquid crystal panel according to claim 1, characterized in that:

the edge of the first light shielding part adjacent to the first light transmission part is the first edge;

the edge of the first light shielding part adjacent to the second light transmission part is the second edge;

the edge of the second light shielding part adjacent to the first light transmission part is a third edge;

the edge of the second light shielding part adjacent to the second light transmission part is a fourth edge;

the first edge and the fourth edge extend along the third direction;

the second edge and the third edge extend in a fourth direction.

4. The liquid crystal panel according to claim 1, comprising:

an array substrate, an opposite substrate arranged opposite to the array substrate;

the array substrate is provided with a plurality of scanning lines extending along the first direction and a plurality of data lines extending along the second direction; the plurality of scanning lines and the plurality of data lines intersect to define a plurality of sub-pixels;

the light shielding portion and the light transmitting portion are provided on the counter substrate.

5. The liquid crystal panel according to claim 4,

the shading part is a color resistor.

6. The liquid crystal panel according to claim 5,

the shading part is a red color resistor, a green color resistor or a yellow color resistor.

7. The liquid crystal panel according to claim 5, characterized in that:

the light shielding part is formed by laminating color resists with different colors.

8. The liquid crystal panel according to claim 4, characterized in that:

and the opposite substrate is also provided with a black matrix corresponding to the sub-pixels, and the light shielding part material is the same as the black matrix.

9. The liquid crystal panel according to claim 1,

the light-transmitting part is made of transparent organic materials.

10. A3D printing device, comprising a light source, a printer platform and the liquid crystal panel of any one of claims 1 to 9;

the liquid crystal panel is positioned between the light source and the printer platform.

11. A printing method of a display panel for 3D printing is characterized by comprising the following steps:

a liquid crystal panel, the liquid crystal panel comprising:

the pixel includes a light shielding portion and a light transmitting portion including adjacent first and second edges; the first edge extends along a third direction that intersects the first direction and the second direction; the second edge extends in a fourth direction that intersects the first direction and the second direction; the third direction and the fourth direction also intersect; the light shielding part comprises a first light shielding part and a second light shielding part, and the light transmission part comprises a first light transmission part and a second light transmission part; the first sub-pixel, the second sub-pixel and the third sub-pixel are positioned in a rectangular area; the rectangle is divided into a first sub-area, a second sub-area, a third sub-area and a fourth sub-area by two diagonals of the rectangle, the first sub-area and the second sub-area are arranged oppositely, and the third sub-area and the fourth sub-area are arranged oppositely;

the first light shielding part covers the first sub-region, the second light shielding part covers the second sub-region, the first light transmission part covers the third sub-region, and the second light transmission part covers the fourth sub-region

The printing method comprises the following steps:

the liquid crystal panel displays a target pattern;

the light source irradiates the liquid crystal panel, and partial light irradiates the printer platform through the liquid crystal panel on which the target pattern is displayed;

the printer platform forms the target pattern.

12. The printing method according to claim 11, wherein:

the target pattern comprises a section of a profiled edge, the profiled edge extending in a fifth direction;

and when the included angle between the fifth direction and the third direction or the fourth direction is smaller than the included angle between the fifth direction and the first direction or the second direction, the first sub-pixel and the third sub-pixel of the pixel corresponding to the special-shaped edge are not opened at the same time.