CN108681146A - Display panel, display device and 3D printing system - Google Patents

Display panel, display device and 3D printing system

Technical Field

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

Background

In the conventional display device technology, the display panel is mainly divided into two mainstream technologies, namely a liquid crystal display panel and an organic self-luminous display panel. The liquid crystal display panel forms an electric field capable of controlling the deflection of liquid crystal molecules by applying voltage on the pixel electrode and the common electrode, and further controls the transmission of light rays to realize the display function of the display panel; the organic self-luminous display panel adopts an organic electroluminescent material, and when current passes through the organic electroluminescent material, the luminescent material can emit light, so that the display function of the display panel is realized.

Fig. 1 is a diagram illustrating a structure of a display panel film in the related art. As shown in fig. 1, for the liquid crystal display panel, the display panel includes an array substrate 101 ' and an opposite substrate 102 ', a liquid crystal layer 103 ' is disposed between the array substrate 101 ' and the opposite substrate 102 ', the opposite substrate 102 ' includes a first substrate 1021 ' and a black matrix BM ', the black matrix BM ' is located at a side of the first substrate 1021 ' close to the array substrate 101 ', the black matrix BM ' has a plurality of openings K ', the black matrix BM ' divides the display panel into a plurality of pixels p ', and one pixel p ' includes one opening K '. The array substrate 101 'includes a second substrate 1011' and a thin film transistor (not shown) disposed on a side of the second substrate 1011 'adjacent to the opposite substrate 102', and light is emitted from the position of the opening K 'through the array substrate 101' and the liquid crystal layer 103 'to realize light emission of the pixel p'. In the prior art, the display panel has a light leakage phenomenon, as shown in fig. 1, a pixel p1 'is adjacent to a pixel p 2', and when the pixel p1 'does not emit light, but the pixel p 2' emits light, a part of light may leak from the side of the pixel p2 ', penetrate through the array substrate and the liquid crystal layer, and exit from an opening K' corresponding to the pixel p1 ', so that the pixel p 1' leaks light.

Therefore, it is an urgent technical problem to be solved in the art to provide a display panel, a display device and a 3D printing system capable of reducing side light leakage.

Disclosure of Invention

In view of this, the present invention provides a display panel, a display device and a 3D printing system, which solve the technical problem of reducing side light leakage.

In a first aspect, the present invention provides a display panel comprising:

a display area and a non-display area, the display area including a plurality of pixels;

the liquid crystal display panel comprises an array substrate, a liquid crystal molecular layer and an opposite substrate, wherein the liquid crystal molecular layer is positioned between the array substrate and the opposite substrate;

a light shielding part is arranged between two adjacent pixels, and comprises a first light shielding part and a second light shielding part, wherein the first light shielding part is positioned on the opposite substrate, and the second light shielding part is positioned on the array substrate; wherein,

the orthographic projection of the first shading part on the plane where the second shading part is located covers the second shading part.

In a second aspect, based on the same inventive concept, the invention provides a display device comprising any one of the display panels proposed by the invention.

In a third aspect, based on the same inventive concept, the invention provides a 3D printing system comprising any one of the display panels proposed by the invention.

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

according to the display panel provided by the invention, the first light-shielding part and the second light-shielding part are arranged between two adjacent pixels, and the second light-shielding part and the first light-shielding part jointly act to shield the light emitted from the pixels to the side direction, so that the risk of side light leakage of the display panel is reduced. For the display panel applied to the 3D printing technology, the effect of 3D printing can be improved by reducing the side light leakage.

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 diagram illustrating a structure of a display panel;

FIG. 2 is a schematic top view of a display panel according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a film structure of a display panel according to an embodiment of the invention;

FIG. 4 is a simplified schematic diagram illustrating a pixel side-leakage principle of a related art display panel;

FIG. 5 is a simplified schematic diagram illustrating a lateral light leakage principle of a pixel in a display panel according to the present invention;

fig. 6 is a schematic diagram of an alternative implementation of a film structure of a display panel according to an embodiment of the present invention;

fig. 7 is a schematic diagram of an alternative implementation of a film structure of a display panel according to an embodiment of the present invention;

fig. 8 is a schematic diagram of another alternative embodiment of a film structure of a display panel according to an embodiment of the present invention;

fig. 9 is a schematic diagram of another alternative embodiment of a film structure of a display panel according to an embodiment of the present invention;

fig. 10 is a schematic diagram of another alternative embodiment of a film structure of a display panel according to an embodiment of the present invention;

fig. 11 is a schematic diagram of another alternative embodiment of a film structure of a display panel according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention;

fig. 13 is a schematic 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.

The 3D printing technology is characterized in that a computer three-dimensional design model is used as a blueprint, special materials such as metal powder, ceramic powder, plastics, cell tissues and the like are stacked layer by layer and bonded through a software layering dispersion and numerical control forming system in a laser beam, hot melting nozzles and other modes, and finally, solid products are manufactured through superposition forming. The traditional 3D printing technology generally performs point-by-point printing through a single ultraviolet laser, and has long printing time and slow working efficiency.

In the related art, a liquid crystal display panel is used as a mask for 3D printing, an image to be printed is displayed on the display panel, and light emitted from a light source is transmitted through the liquid crystal display panel and irradiated onto a photosensitive material to cure the photosensitive material of a target portion. The image on the liquid crystal display panel can generate transmittance difference through gray scale control liquid crystal deflection, so that the cured photosensitive material can generate different shapes, and the 3D printing function is realized. When the display panel is applied to a 3D printing technology, the influence of lateral light leakage of the display panel is amplified due to the sensitivity of the photosensitive material to light intensity change, and light leaking from the edge of a pixel can also act on the photosensitive material, so that the 3D printing effect is influenced. Based on this, the inventor designs the structure in the display panel to reduce the problem of side light leakage of the display panel.

Fig. 2 is a schematic top view of a display panel according to an embodiment of the invention. Fig. 3 is a schematic diagram of a film structure of a display panel according to an embodiment of the invention.

As shown in fig. 2, the display panel includes: a display area AA including a plurality of pixels p, and a non-display area BA.

As shown in fig. 3, the display panel includes: the liquid crystal display panel comprises an array substrate 101, a liquid crystal molecular layer 103 and a counter substrate 102, wherein the liquid crystal molecular layer 103 is positioned between the array substrate 101 and the counter substrate 102; a light-shielding portion ZB including a first light-shielding portion ZB1 and a second light-shielding portion ZB2 is provided between two adjacent pixels p, the first light-shielding portion ZB1 is located on the opposite substrate 102, and the second light-shielding portion ZB2 is located on the array substrate 101; the orthographic projection of the first shading part ZB1 on the plane of the second shading part ZB2 covers the second shading part ZB 2. The opposite substrate 102 includes a first substrate 1021, the first light-shielding portion ZB1 may be located on a side of the first substrate 1021 close to the liquid crystal layer 103, the array substrate 101 includes a substrate 1011, and the substrate 1011 may be located on a side of the second light-shielding portion ZB2 far from the liquid crystal layer 103. In the present invention, two adjacent pixels p1 and p2 are illustrated in fig. 3. Illustratively, the first light-shielding portion ZB1 can shield the light emitted from the liquid crystal layer 103 to the side of the pixel p2 in the direction of the pixel p1, and the second light-shielding portion ZB2 can shield the light emitted from the side of the partial pixel p2 to the side of the substrate 1011 of the array substrate 101 in the direction of the pixel p 1. When the pixel p1 does not emit light and the pixel p2 emits light, the light emitted to the pixel p1 can be prevented from causing the pixel p1 to emit light to affect the display effect; when both the pixel p1 and the pixel p2 emit light, it is possible to prevent the display effect from being affected by the fact that the luminance of the pixel p1 becomes large due to the light emitted to the pixel p 1. Alternatively, by providing the first light-shielding portion and the second light-shielding portion around the pixel p1, the light-shielding portions can shield light emitted from the side of the periphery of the pixel p1 to the pixel p1 when the pixel p1 emits light. The side leakage light is prevented from affecting the light emission of the pixel p 1.

When the display panel is applied to a 3D printing technology, pixels in the display panel display according to printed patterns, and photosensitive materials in the 3D printing technology are sensitive to light. When the pixel p1 does not emit light in the printing pattern and the pixel p2 emits light, the first shading part and the second shading part can prevent the light emitted to the pixel p1 from causing the pixel p1 to emit light, and the phenomenon that the shape of a 3D printing final product is influenced due to the fact that the photosensitive material corresponding to the pixel p1 is solidified is avoided; when the pixel p1 and the pixel p2 emit light, the brightness of the pixel p1 can be prevented from being increased due to the light emitted to the pixel p1, and the influence on the size of a 3D printing final product caused by over exposure of a photosensitive material corresponding to the pixel p1 can be avoided.

According to the display panel provided by the invention, the first light-shielding part and the second light-shielding part are arranged between two adjacent pixels, and the second light-shielding part and the first light-shielding part jointly act to shield the light emitted from the pixels to the side direction, so that the risk of side light leakage of the display panel is reduced. For the display panel applied to the 3D printing technology, the effect of 3D printing can be improved by reducing the side light leakage.

FIG. 4 is a simplified diagram illustrating a pixel side-leakage principle of a related art display panel. Fig. 5 is a simplified schematic diagram illustrating a principle of lateral light leakage of pixels in the display panel according to the present invention.

In the related art, as shown in fig. 4, the length of the pixel p 'is L, the thickness of the black matrix BM' is b,the thickness of the opposite substrate 102 'is D1 (excluding the thickness of the first substrate 1021'), the thickness of the liquid crystal layer 103 'is D2, and the angle of the abnormal light in the display panel means an angle formed by a light ray directed toward the pixel from a side direction in the cross-sectional view and a vertical direction e in the cross-sectional view, the maximum angle of the abnormal light is the maximum value of the angle of the abnormal light, in the related art, the abnormal light is blocked only by the black matrix BM', the maximum angle of the abnormal light (side leakage light) is α, theoretically,that is, when the angle between the light direction and the vertical direction e in the cross-sectional view is α or less, the light can be emitted from the pixel, and when the present invention is applied, as shown in fig. 5, the length of the pixel p in the cross-sectional view is L, the thickness of the first light-shielding portion ZB1 is b, assuming that the thickness of the black matrix BM' in the related art is the same, the thickness of the opposite substrate 102 is D1 (excluding the thickness of the first substrate 1021), and the thickness of the liquid crystal layer 103 is D2, the present invention shields the abnormal light by both the first light-shielding portion and the second light-shielding portion, and the maximum angle of the abnormal light (lateral light leakage) is β when the thickness of the second light-shielding portion ZB2 is ignored,in practice, the second light-shielding portion ZB2 in the array substrate 101 has a certain thickness, so D1+ D2>>b, then β<<α, it can be seen that the abnormal light can only be emitted from the pixel when the angle of the abnormal light emitted from the pixel is relatively small, i.e. the included angle between the light direction and the vertical direction e in the schematic cross-sectional view is less than β, as shown in fig. 5, the farther the distance from the pixel p to the side direction is from the pixel p in the direction f in the figure, and the light rays with the included angle between the light emitted to the pixel p and the vertical direction e being greater than β are all blocked by the second light-blocking part and cannot be emitted from the pixel p (as shown by the dotted line with the arrow in fig. 5).

Furthermore, the orthographic projection area of the first shading part on the plane of the second shading part is M1, the area of the second shading part is M2, and M2/M1 is more than or equal to 0.7 and less than or equal to 1. Alternatively, M2/M1 equals 0.8, M2/M1 equals 0.9, or M2/M1 equals 0.95. In this embodiment, the area of the second light-shielding portion may be equal to the projection area of the first light-shielding portion, or the area of the second light-shielding portion is slightly smaller than the projection area of the first light-shielding portion, and the larger the area of the second light-shielding portion is, the stronger the ability to block light leakage to the side of the pixel is, while ensuring that the size of the projection area of the first light-shielding portion is unchanged.

Fig. 6 is a schematic diagram of an alternative implementation of a film structure of a display panel according to an embodiment of the present invention. As shown in fig. 6, the orthogonal projection of the first shading portion ZB1 on the plane of the second shading portion ZB2 overlaps the second shading portion ZB 2. In the display panel, the first light-shielding portion is located in the opposite substrate, the first light-shielding portion is located between two adjacent pixels, and the pixels in the display panel may be distinguished as a structure of spaced pixels. The second shading part is arranged to reduce side light leakage, and the aperture opening ratio of the display panel is not affected. In addition, the first shading part and the second shading part have the same equivalent area size, and when the display panel is manufactured, the first shading part and the second shading part can be manufactured by adopting the same mask plate, so that the manufacturing process is simplified.

Further, as shown in fig. 6, in an alternative embodiment, a light shielding portion is disposed between any two adjacent pixels p. The embodiment can reduce the risk of side light leakage of all pixels in the display panel, and can improve the 3D printing effect when being applied to the 3D printing technology.

In the present invention, as shown in fig. 3, in the direction x perpendicular to the plane of the display panel, the thickness of the second light-shielding portion ZB2 is d2, and the thickness of the first light-shielding portion ZB1 is d1, wherein 0 < d2< d1. the second light-shielding portion is disposed in the array substrate, according to the principles shown in fig. 4 and 5, when the thickness of the second light-shielding portion is neglected, the angle β of the side light leakage in the present invention is much smaller than the angle α of the side light leakage in the related art, and after the thickness of the second light-shielding portion is added in the calculation, the angle β of the side light leakage in the present invention is smaller, i.e., the risk of the side light leakage is lower.

Optionally, 1/3 ≦ d2/d1< 1. The embodiment ensures that the influence of the thickness of the second shading part on the whole thickness of the display panel is small, and simultaneously ensures that the thickness of the second shading part meets the shading performance and prevents the lateral light leakage of the pixel.

Optionally, the first light-shielding portion and the second light-shielding portion may be made of the same or different materials. The second shading part and the first shading part are made of the same material, and one shading material is selected during the manufacturing of the display panel and can be used for manufacturing the first shading part and the second shading part at the same time, so that the material screening time is saved, and the process is simplified. Optionally, the light shielding portion may be made of a light absorbing material such as chromium, chromium oxide, chromium nitride, a black organic material, a modified organic material, or a photochromic material, and the light absorbing material can absorb the laterally emitted light to effectively prevent lateral light leakage.

In an implementation manner, fig. 7 is a schematic diagram of an alternative implementation manner of a film layer structure of a display panel according to an embodiment of the present disclosure. As shown in fig. 7, the first light-shielding portion ZB1 is located on the side of the counter substrate 102 close to the array substrate 101, and the first light-shielding portion ZB1 includes a black matrix BM located on the side of the first substrate 1021 close to the liquid crystal molecule layer 103. The black matrix BM defines a plurality of pixels p in the display panel, and a structural layer such as a planarization layer or a protective layer may be further disposed on the black matrix BM. The first shading part comprises a black matrix, and a second shading part corresponding to the black matrix is arranged below the black matrix, and the black matrix and the second shading part jointly act to shade the lateral light leakage of the pixel. The black matrix is used as the first shading part, and no additional process is needed in the manufacturing process of the opposite substrate.

Alternatively, the color resist layer is not provided in the counter substrate 102. When the display panel is applied to the 3D printing technology, the light-emitting side of the display panel adopts a uniform light source, the pixels do not need to be distinguished and designed for three primary colors, and the phenomenon that the light penetrates through the color resistance layer to influence the penetration rate can be avoided.

The second light shielding part in the present invention includes various cases at specific film layer positions in the display panel. In the display panel provided by the invention, the array substrate is of a multi-film layer structure and comprises a substrate and a thin film transistor positioned on the substrate, wherein the thin film transistor is used as a switching device for driving a pixel. The second shading part is positioned at a film layer in the array substrate and can be positioned above the thin film transistor or positioned between the thin film transistor and the substrate. The following examples are illustrated in detail.

In one embodiment, fig. 8 is a schematic diagram of another alternative embodiment of a film structure of a display panel according to an embodiment of the present disclosure. As shown in fig. 8, the array substrate 101 includes: a substrate 1011 and a plurality of thin film transistors T located on the substrate 1011, and a second light-shielding part ZB2 is located on the side of the thin film transistor T close to the liquid crystal molecule layer 103. The thin film transistor T includes an active layer T1, a gate electrode T2, a source electrode T3, and a drain electrode T4, and fig. 8 schematically shows only a thin film transistor with a top gate structure. In this embodiment, the first light-shielding portion and the second light-shielding portion are provided between adjacent pixels, and the risk of light leakage from the pixel side can be reduced. The second light shielding part is arranged on the side of the thin film transistor far away from the substrate, the manufacturing process of the thin film transistor is complex, for example, a source electrode and a drain electrode need to be connected to an active layer through a through hole, and the active layer also needs conductive processing and other processes. When the array substrate is manufactured, the second shading part is manufactured after the thin film transistor process is finished, the process of the thin film transistor is not changed, and the manufacturing is simple.

In another embodiment, an array substrate includes: the second light shielding part is positioned on one side of the thin film transistor close to the liquid crystal molecular layer; and the second light shielding part is provided with an isolating layer at one side close to the liquid crystal molecular layer. Fig. 9 is a schematic diagram of another alternative embodiment of a film structure of a display panel according to an embodiment of the present invention. As shown in fig. 9, only a partial structure of the array substrate in the display panel is illustrated, the array substrate includes a substrate 1011 and a thin film transistor disposed on the substrate 1011, the thin film transistor includes an active layer T1, a gate electrode T2, a source electrode T3 and a drain electrode T4, and the second light shielding portion ZB2 is disposed on the thin film transistor T. The display panel further includes a spacer layer 1012, and the spacer layer 1012 is located on the side of the second light-shielding portion ZB2 close to the liquid crystal molecular layer (not shown). Fig. 9 illustrates a bottom-gate tft as an example, and further includes a data line D in the display panel, where the data line D may be formed in the same film as the source T3 and the drain T4 of the tft, and a pixel electrode 1013 and a common electrode 1014 may be disposed between the second light-shielding portion ZB2 and the tft, where the pixel electrode 1013 may be connected to the drain T4 of the tft. In this embodiment, a spacer layer is further formed on the second light-shielding portion, and the spacer layer can separate the liquid crystal molecules in the liquid crystal molecule layer from the second light-shielding portion, thereby preventing the liquid crystal molecules from being contaminated by the material used for forming the second light-shielding portion. Meanwhile, the isolation layer is manufactured on the second shading part, and can also play a role in flattening, so that a flat surface is provided for the subsequent process of coating the alignment film.

In another embodiment, fig. 10 is a schematic diagram of another alternative embodiment of a film structure of a display panel according to an embodiment of the present invention. As shown in fig. 10, only the array substrate in the display panel is illustrated, and the array substrate 101 further includes a pixel electrode 1013 and a common electrode 1014, and the pixel electrode 1013 is connected to the drain electrode T4 of the thin film transistor. The second light-shielding portion ZB2 is located on the side of the common electrode 1014 closer to the thin film transistor. In this embodiment, one pixel includes one pixel electrode, and the pixel electrode needs to be connected to a source or a drain of a thin film transistor, and a voltage is applied to the pixel electrode through the thin film transistor. The second shading part can be manufactured after the manufacturing process of the source electrode and the drain electrode of the thin film transistor is completed, or the second shading part is manufactured after the pixel electrode is manufactured, and finally the common electrode is manufactured.

In addition, in this embodiment, a film layer (second light shielding portion) is added between the pixel electrode and the common electrode, so that the distance between the pixel electrode and the common electrode is increased, and a strong electric field needs to be formed between the pixel electrode and the common electrode to drive the liquid crystal to deflect. Optionally, the second light-shielding portion ZB2 includes a high-resistance material, and the sheet resistance of the high-resistance material is greater than or equal to 10¹⁴Omega. A high-resistance material is used to prevent the arrangement of the second light-shielding portion from affecting an electric field formed between the pixel electrode and the common electrode.

In another implementation manner, fig. 11 is a schematic diagram of another alternative implementation manner of the film layer structure of the display panel provided in the embodiment of the present disclosure. As shown in fig. 11, only the array substrate in the display panel is illustrated, the array substrate includes a substrate 1011 and a plurality of thin film transistors located on the substrate 1011, and the second light shielding portion ZB2 is located between the substrate 1011 and the thin film transistors. In this embodiment, the second light-shielding portion ZB2 is formed between the processes of the tft to reduce the side light leakage of the pixel. The second shading part is manufactured when the array substrate is manufactured, the original process of the thin film transistor is not changed, and the manufacturing is simple.

Optionally, as shown in fig. 11, the array substrate 1011 further includes a planarization layer 1015, and the planarization layer 1015 is located on the side of the second light-shielding portion ZB2 close to the thin film transistor T. When the array substrate is manufactured, the second shading part ZB2 is firstly manufactured on the substrate 1011, then a planarization layer 1015 is manufactured on the second shading part ZB2, and then the thin film transistor is manufactured on the planarization layer 1015, so that the flat surface for manufacturing the thin film transistor is ensured.

In the drawings of the embodiments corresponding to fig. 9, fig. 10, and fig. 11, only the thin film transistor with the bottom gate structure is taken as an example for description, and alternatively, the thin film transistor in the present invention may also have a top gate structure. In the above drawings, the common electrode 1014 and the pixel electrode 1013 are also schematically illustrated, and in one pixel, the common electrode 1014 has an opening and the pixel electrode has a full-surface structure.

Based on the same inventive concept, fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention, and as shown in fig. 12, the display device includes a display panel 100 according to any embodiment of the present invention, the display panel 100 includes an array substrate 101, a liquid crystal molecular layer 103, and an opposite substrate 102, a light-shielding portion ZB is disposed between two adjacent pixels p, the light-shielding portion ZB includes a first light-shielding portion ZB1 and a second light-shielding portion ZB2, the first light-shielding portion ZB1 is disposed on the opposite substrate 102, and the second light-shielding portion ZB2 is disposed on the array substrate 101. The display device further includes a backlight module 200, and the backlight module 200 is located on a side of the array substrate 101 away from the liquid crystal molecule layer 103.

The backlight module 200 may be a direct type backlight module or a side type backlight module in a conventional liquid crystal display panel, or the backlight module 200 may be a backlight module applied to a 3D printing technology. The backlight module 200 comprises a backlight source with a wavelength of 385nm-420 nm. Optionally, the backlight source includes a plurality of backlight sources arranged in a dot matrix, and the wavelength of light emitted by the backlight source may be 385nm, 405nm, or 420 nm.

The display device provided by the invention can effectively reduce the side light leakage of the pixel.

Based on the same inventive concept, the invention further provides a 3D printing system, and fig. 13 is a schematic diagram of the 3D printing system provided in the embodiment of the invention. As shown in fig. 13, a 3D printing system is a display panel 100 according to an embodiment of the present invention. The 3D printing system further comprises a liquid photosensitive material located in the reagent tank 13a and a carrier 13 b. The liquid photosensitive material may be a liquid photosensitive resin. The display device 10 is the display device of the above embodiment, and includes the display panel 100 of the above embodiment.

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 bearing device 13b is located in the liquid photosensitive material, the cured photosensitive material is fixed on the bearing device 13b, and the bearing device 13b is used for moving in a first direction y based on the display time sequence of the display panel, wherein the first direction y is the same as the light beam emitting direction of the display panel. As shown in fig. 13, 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 set correspondingly to the moving direction of the carrying device 13 b.

By the embodiment, the display panel, the display device and the 3D printing system provided by the invention at least realize the following beneficial effects:

according to the display panel provided by the invention, the first light-shielding part and the second light-shielding part are arranged between two adjacent pixels, and the second light-shielding part and the first light-shielding part jointly act to shield the light emitted from the pixels to the side direction, so that the risk of side light leakage of the display panel is reduced. For the display panel applied to the 3D printing technology, the effect of 3D printing can be improved by reducing the side light leakage.

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.