CN117111327A

CN117111327A - Display panel and stereoscopic display device

Info

Publication number: CN117111327A
Application number: CN202210583582.5A
Authority: CN
Inventors: 王利亮; 林科; 于洋
Original assignee: Huizhou TCL Mobile Communication Co Ltd
Current assignee: Huizhou TCL Mobile Communication Co Ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2023-11-24
Also published as: WO2023226529A1

Abstract

The application discloses a display panel and a stereoscopic display device, the display panel comprises: the lens layer comprises a plurality of column lenses which are arranged in a row, and the column lenses are used for deflecting incident light rays to a preset direction and emitting the incident light rays; the light shielding layer is arranged on the light inlet side of the lens layer, and a plurality of light transmission structures used for transmitting light are arranged at intervals of the light shielding layer; the light-entering side of each cylindrical lens is correspondingly provided with a plurality of light-transmitting structures, and each light-transmitting structure corresponds to one cylindrical lens, so that light rays on one side, back to the cylindrical lens layer, of the shading layer can be transmitted to the corresponding cylindrical lens from the light-transmitting structure. The display device provided by the application forms a plurality of point light sources by the light rays emitted to the lens layer from the light inlet side of the lens layer through the light shielding layer, so that the probability of occurrence of light crosstalk of adjacent cylindrical lenses in the lens layer is reduced.

Description

Display panel and stereoscopic display device

Technical Field

The application belongs to the technical field of display, and particularly relates to a display panel and a stereoscopic display device.

Background

The 3D (three dimensional) display technology is a novel display technology, and compared with the common 2D (two dimensional) display technology, the 3D display technology can enable pictures to become more stereoscopic, images are not limited to the plane of a screen any more, and can leave out of the screen, so that an audience feels like being personally on the scene.

In the related art, a display panel outputs a display image to a user by a light beam entering eyes of the user after passing through pixel points, wherein the display image is composed of a plurality of pixel points, and different pixel points correspond to different light beams of the display panel. At this time, by adding a lens layer composed of cylindrical lenses in the display panel, different light beams of the display panel are respectively deflected to different directions by the cylindrical lenses so as to independently output different display images to the left and right eyes of the user, and the end user can fuse the different display images picked up by the left and right eyes in the brain to form a 3D image.

However, in practical use, a part of light beams that should be deflected by a specific cylindrical lens is easily deflected to an incorrect direction by another cylindrical lens, so that a problem of light crosstalk between different cylindrical lenses is caused, and the 3D display effect is finally affected.

Disclosure of Invention

The embodiment of the application provides a display panel and display equipment, which are used for reducing the probability of light crosstalk between cylindrical lenses.

An embodiment of the present application provides a display panel including:

the lens layer comprises a plurality of column lenses which are arranged in a row, and the column lenses are used for deflecting incident light rays to a preset direction and emitting the incident light rays; and

the light shielding layers are arranged on the light inlet side of the lens layer, and a plurality of light transmission structures used for transmitting light rays are arranged at intervals on the light shielding layers;

the light-transmitting structure is arranged on the light-entering side of each cylindrical lens, and each light-transmitting structure corresponds to one cylindrical lens, so that light rays on one side, back to the cylindrical lens layer, of the light-shielding layer can be transmitted from the light-transmitting structure to the corresponding cylindrical lens.

Optionally, the light-transmitting structure includes a first through hole disposed on the light-shielding layer.

Optionally, the display panel further includes a first light-transmitting layer between the cylindrical lens and the light-shielding layer, and the light-shielding layer is attached to the first light-transmitting layer.

Optionally, a side of the first light-transmitting layer, which is close to the light shielding layer, has a first smooth surface, and the light transmitted by the light-transmitting structure can pass through the first light-transmitting layer through the first smooth surface.

Optionally, along the direction that a plurality of lenticular lens arrange the setting, all correspond between axis and the every side end reason of lenticular lens and be provided with at least one the light-transmitting structure.

Optionally, along the direction in which the plurality of cylindrical lenses are arranged, a gap is formed between an edge of each light-transmitting structure and an edge of the corresponding cylindrical lens.

Optionally, the light shielding layer further includes a first reflective film, and at least one of the light-transmitting structures has a surrounding first reflective film, where the first reflective film is configured to reflect light on a side of the first reflective film opposite to the cylindrical lens.

Optionally, the display panel further includes a liquid crystal display layer, the liquid crystal display layer is disposed on the light emitting side of the cylindrical lens, the liquid crystal display layer includes a first polarizer, and a transmission axis of the first polarizer is the same as a transmission axis of the cylindrical lens.

Optionally, the liquid crystal display layer further includes a color filter, and the color filter array is provided with a plurality of sub-pixels;

and a plurality of sub-pixels are correspondingly arranged between the central axis of the cylindrical lens and each side end edge along the arrangement direction of the cylindrical lenses.

Optionally, a row of the sub-pixels is arranged between the central axis of the cylindrical lens and the end edge of each side along the direction in which the plurality of cylindrical lenses are arranged, and each row of the sub-pixels is arranged along the direction parallel to the central axis of the cylindrical lens;

wherein light transmitted by each of the light transmissive structures is capable of being deflected via the lenticular lens to one or more of the sub-pixels in the same column.

Optionally, along the arrangement direction of the plurality of cylindrical lenses, the width of the light-transmitting structure is smaller than the width of the sub-pixel.

Optionally, the radius of curvature of the light-emitting surface of the cylindrical lens is R, and the maximum distance between the light-transmitting structure and the light-emitting surface of the cylindrical lens is less than or equal to 2R and greater than or equal to 1/4R.

Optionally, the lens layer is attached to the liquid crystal display layer frame or is fully attached to the liquid crystal display layer frame.

Optionally, the display panel further includes a liquid crystal display layer, and the liquid crystal display layer is disposed on the light-incoming side of the light shielding layer.

Optionally, the display panel further includes a backlight module, the backlight module is disposed on a side of the light shielding layer opposite to the lens layer, and the backlight module is a direct type backlight module or a side-in type backlight module.

In a second aspect, an embodiment of the present application further provides a stereoscopic display device, including:

a display panel, such as any one of the above; and

and the shell is used for bearing the display panel.

In the embodiment of the application, when the backlight module emits light from one side of the shading layer, which is back to the lens layer, part of light rays emitted by the backlight module are blocked by areas outside the light transmission structure of the shading layer, and part of light rays emitted by the backlight module pass through the light transmission structure. Therefore, the light shielding layer can be used for converting the light source of the backlight module into a plurality of point light sources, namely each light transmission structure can be used for forming one point light source, and the irradiation area covered by each point light source is smaller relative to the surface light source, so that one beam of light transmitted by each light transmission structure is less prone to being partially injected into the wrong cylindrical lens, and the probability of light cross between different cylindrical lenses can be reduced.

Drawings

The technical solution of the present application and its advantageous effects will be made apparent by the following detailed description of the specific embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a stereoscopic display device according to an embodiment of the present application.

Fig. 2 is a schematic view of a lens layer structure of the display panel shown in fig. 1.

Fig. 3 is a schematic structural diagram of a lens layer, a light shielding layer and a light transmitting layer of the display panel shown in fig. 2.

Fig. 4 is a schematic diagram of another structure of the light-transmitting layer shown in fig. 3.

Fig. 5 is a schematic view of a first structure of the light shielding layer shown in fig. 3.

Fig. 6 is a schematic view of a second structure of the light shielding layer shown in fig. 3.

Fig. 7 is a schematic structural diagram of a liquid crystal display layer of the display panel shown in fig. 3.

Fig. 8 is a schematic view of a light path of the display panel shown in fig. 7.

Fig. 9 is a schematic diagram of a full-bonding structure of a liquid crystal display layer and a lens layer of the display panel shown in fig. 7.

Fig. 10 is a schematic structural diagram of a backlight module of the display panel shown in fig. 7.

The reference numerals in the figures are respectively:

100. a display panel;

11. a lens layer; 111. a cylindrical lens;

12. a light shielding layer; 121. a light-transmitting structure;

13. a light-transmitting layer; 131. a first smooth surface;

14. a liquid crystal display layer; 141. a TFT array substrate; 142. a liquid crystal layer; 143. a color filter; 1431. a sub-pixel; 1431a, a first subpixel; 1431b, a second subpixel; 144. a first polarizer;

15. a first optical adhesive layer;

16. a backlight module; 161. an LED light source; 162. a light guide plate; 163. a second polarizer; 164. a second reflective film;

200. a housing.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a stereoscopic display device according to an embodiment of the application. The embodiment of the application provides a display panel 100, which is applied to display images in electronic equipment. The electronic device may have a housing 200 and a display panel 100, the housing 200 being used to carry and mount the display panel 100. The display device may be an outdoor 3D (three dimensional) display screen, a palm tablet, a television, a mobile phone terminal, etc., which is not limited in the embodiment of the present application.

With continued reference to fig. 2 and fig. 3, fig. 2 is a schematic view of a lens layer structure of the display panel shown in fig. 1, and fig. 3 is a schematic view of a lens layer, a light shielding layer and a light transmitting layer of the display panel shown in fig. 2. The display panel 100 may include a lens layer 11. The lens layer 11 includes a plurality of cylindrical lenses 111 arranged in a row, the cylindrical lenses 111 are used for deflecting incident light to a preset angle for emission, and when the display panel 100 emits light, part of light rays of the display panel 100 can deflect to the left eye of a user through the cylindrical lenses 111 to output a left eye display image to the user, part of light rays can deflect to the right eye of the user through the cylindrical lenses 111 to form a right eye display image to the right eye of the user, and finally, the left eye display image and the right eye display image picked up by the eyes of the user can be fused in the brain of the user to form a three-dimensional stereoscopic image.

The display panel 100 may further include a light shielding layer 12. The light shielding layer 12 is disposed on the light entering side of the lens layer 11, and a plurality of light transmitting structures 121 for transmitting light are disposed on the light shielding layer 12 at intervals. At least one light-transmitting structure 121 is disposed on the light-entering side of each cylindrical lens 111, so that light on the side of the light-shielding layer 12 facing away from the lens layer 11 can be transmitted from the light-transmitting structure 121 to the corresponding cylindrical lens 111.

Furthermore, when the backlight module is disposed on the side of the light shielding layer 12 facing away from the lens layer 11, the light emitted by the backlight module can be partially shielded by the portion other than the light transmitting structure of the light shielding layer 12 and partially pass through the light transmitting structure 121. Therefore, it can be regarded that the light shielding layer 12 converts the light source of the backlight module into a plurality of point light sources, that is, each light transmitting structure 121 can be regarded as forming a point light source, and the coverage area of each point light source is smaller than that of the surface light source, so that the light transmitted by each light transmitting structure 121 can be totally injected into a corresponding cylindrical lens 111. Or, the light emitted by the backlight module can be divided into a plurality of beams according to the cylindrical lenses to be injected, and the light which is easy to cause the light to be in the light-emitting edge of each beam can be shielded by the light shielding layer 12 except the light-transmitting structure 121, so that the probability of light in the light-emitting edge of different cylindrical lenses 111 can be reduced.

For example, taking the case that the cylindrical lens 111 includes the adjacent first cylindrical lens 111 and second cylindrical lens 111, a certain light beam in the display panel 100 is deflected by the first cylindrical lens 111 and then is directed to the left eye of the user to output a left eye display image, if the light beam is in cross light, a part of light beam will be wrongly injected into the second cylindrical lens 111 and deflected to the right eye of the user, so that the right eye display image which is independently output to the right eye of the user by the display panel 100 is disturbed, and finally, the imaging quality of a three-dimensional stereoscopic image formed by fusing the brains of the user is lower, and even discomfort such as dizziness of the user is caused. Therefore, the light shielding layer 12 is provided in the embodiment of the application to reduce the probability of light crosstalk in the lens layer 11, thereby improving the imaging effect of the display panel 100 and the experience effect of the user.

In some embodiments, the light-transmitting structure 121 may include a first through hole formed on the light-shielding layer 12, and thus light may be transmitted into the lenticular lens 111 through the first through hole without shielding.

Alternatively, the light-transmitting structure 121 may be a solid structure made of a light-transmitting material, such as an acrylic plate, a transparent glass plate, a transparent PC (Polycarbonate) plate, or the like, which is not limited in the embodiment of the present application.

In some embodiments, the display panel 100 may further include a light-transmitting layer 13, the light-transmitting layer 13 being located between the lens layer 11 and the light-shielding layer 12. The light shielding layer 12 is attached to the light transmitting layer 13. Therefore, the light shielding layer 12 and the lens layer 11 can be connected and fixed by the light transmitting layer 13.

In addition, the air gap between the lens layer 11 and the light shielding layer 12 can be eliminated by the light transmitting layer 13, so that irregular refraction, reflection and the like of light rays when passing through the air gap between the light shielding layer 12 and the lens layer 11 are prevented, and the imaging quality of the display panel 100 is further affected.

The light-transmitting layer 13 may be integrally formed with the lens layer 11, or may be assembled after being manufactured separately from the lens layer 11, which is not limited in the embodiment of the present application.

The light-transmitting layer 13 has a first smooth surface 131 on a side thereof adjacent to the light-shielding layer 12. The first smooth surface 131 is used for receiving the light transmitted by the light-transmitting structure 121. Furthermore, the light transmitted by the light-transmitting structure 121 can be incident into the light-transmitting layer 13 from the first smooth surface 131, and then penetrate through the light-transmitting layer 13 and then enter the corresponding cylindrical lens 111.

It can be appreciated that, compared to the light incident on the light-transmitting layer 13 through the rough surface for the light-transmitting structure 121 to transmit, the first smooth surface 131 can reduce the irregular refraction or scattering of the light during incidence, so that the divergence angle of the light passing through the light-transmitting layer 13 is more controllable, and finally the probability of light passing through the light-transmitting layer 13 due to the overlarge divergence angle in the lens layer 11 can be avoided.

The first smooth surface 131 may be a smooth plane, a smooth convex surface, a smooth concave surface, a smooth conical surface, or the like, which is not limited in the embodiment of the present application.

With continued reference to fig. 4, fig. 4 is a schematic diagram of another structure of the light-transmitting layer shown in fig. 3. In some embodiments, the first smooth surface 131 may be a light-gathering structure, so that the light transmitted by the light-transmitting structure 121 passes through the light-transmitting layer 13 and then diverges at a smaller angle, so as to further reduce the probability of generating light crosstalk at the lens layer 11 after the light transmitted by the light-transmitting structure 121 passes through the light-transmitting layer 13. Such as the first smooth surface 131 may include a smooth curved surface or the like recessed toward the inside of the light-transmitting layer 13.

In some embodiments, the orthographic projection of the light-transmitting structure 121 on the light-transmitting layer 13 is located in the first smooth surface 131, so that the light transmitted by the light-transmitting structure 121 can be totally incident on the first smooth surface 131.

Specifically, the orthographic projection of each light-transmitting structure 121 on the light-transmitting layer 13 may be respectively located in different first smooth surfaces 131. For example, a surface array of one side of the light-transmitting layer 13, which is close to the light-shielding layer 12, is provided with a plurality of smooth curved surfaces which are concave towards the inside of the light-transmitting layer 13. A plurality of light-transmitting structures 121 are also arranged on the light shielding layer 12 in an array. The light transmitting structures 121 and the smooth curved surfaces are in one-to-one correspondence. Of course, it is also possible that a plurality of smooth convex surfaces or smooth conical surfaces are in one-to-one correspondence with a plurality of light-transmitting structures 121, which is not limited in the embodiment of the present application.

Alternatively, the orthographic projections of a plurality of or even all the light-transmitting structures 121 on the light-transmitting layer 13 may be located in the same first smooth surface 131. For example, a surface of the light-transmitting layer 13 adjacent to the light-shielding layer 12 is a smooth plane, so that the orthographic projection of all the light-transmitting structures 121 on the light-transmitting layer 13 is located in the smooth plane.

In some embodiments, a surface of the light-transmitting layer 13 facing the cylindrical lens 111 is used as a light-emitting surface of the light-transmitting layer 13, and the light-emitting surface of the light-transmitting layer 13 may be a smooth plane, so as to prevent irregular refraction, reflection, scattering, etc. generated when the light transmitted from the light-transmitting structure 121 into the light-transmitting layer 13 exits from the light-transmitting layer 13, and further reduce the probability of light crosstalk generated at the cylindrical lens 111.

In some embodiments, along the direction in which the plurality of cylindrical lenses 111 are arranged, at least one light-transmitting structure 121 is correspondingly disposed between the central axis L1 of the cylindrical lens 111 and each side edge.

In the following, taking the cylindrical lens 111 as an example of a reference point, a plurality of cylindrical lenses 111 are arranged in the left-right direction, one side of the cylindrical lens 111 facing away from the light shielding layer 12 is a front side, and one side of the cylindrical lens 111 near the light shielding layer 12 is a rear side.

At this time, on the one hand, it can be understood that the rear side of the left half of each lenticular lens 111 is correspondingly provided with at least one light-transmitting structure 121. Further, each of the lenticular lenses 111 may deflect the light transmitted by the light transmitting structure 121 located at the rear side of the left half thereof to be emitted to the right front outside the display panel 100, and finally the plurality of lenticular lenses 111 deflect the light emitted to the right front outside the display panel 100 to output a left-eye display image to the left eye of the user in common.

On the other hand, it can be understood that the rear side of the right half of each lenticular lens 111 is correspondingly provided with at least one light-transmitting structure 121. Further, each of the lenticular lenses 111 may deflect the light transmitted by the light transmitting structure 121 located at the rear side of the right half thereof to be emitted out of the display panel 100 toward the left front, and finally the plurality of lenticular lenses 111 may deflect the light emitted out of the display panel 100 toward the left front to output a right-eye display image to the right eye of the user in common.

Referring to fig. 4 and fig. 5, fig. 5 is a schematic view of a first structure of the light shielding layer shown in fig. 3. In some embodiments, there may be a plurality of light-transmitting structures 121 between each side edge of the cylindrical lens 111 along the first direction and the central axis L1.

Illustratively, only one column of light-transmitting structures 121 is provided on the rear side of the left half of each lenticular lens 111, and only one column of light-transmitting structures 121 is provided on the rear side of the right half of each lenticular lens 111. Each row of light-transmitting structures 121 is arranged in a direction substantially parallel to the central axis L1 of the cylindrical lens 111.

Referring to fig. 4 and fig. 6, fig. 6 is a schematic view of a second structure of the light shielding layer shown in fig. 3. Alternatively, only one light-transmitting structure 121 may be disposed between each side edge of the cylindrical lens 111 along the first direction and the central axis L1.

Illustratively, only one light-transmitting structure 121 is provided on the rear side of the left half of each lenticular lens 111, and only one light-transmitting structure 121 is provided on the rear side of the right half of each lenticular lens 111. Specifically, since the cylindrical lens 111 has a generally elongated cylindrical structure, the light-transmitting structure 121 may have an elongated shape, and the longitudinal direction of the light-transmitting structure 121 may be parallel to the central axis L1 of the cylindrical lens 111.

It can be understood that, compared to the rear side of the left half or the rear side of the right half of the lenticular lens 111, a row of light-transmitting structures 121 are disposed at intervals, and the light-transmitting area of the light-shielding layer 12 can be increased in the direction parallel to the central axis L1 of the lenticular lens 111 by the elongated light-transmitting structures 121, so as to further increase the light transmittance of the light transmitted by the light-shielding layer 12, so as to increase the final light output of the whole display panel 100 and finally increase the brightness of the display panel 100.

It will also be appreciated that each light transmissive structure 121 may be considered a point source of light as it passes through the light blocking layer 12. At this time, the light transmitted by each light-transmitting structure 121 is directed to the cylindrical lens 111 with a certain divergence angle. At this time, in order to prevent the light transmitted by the light transmitting structures 121 from being diffused in the first direction in another cylindrical lens 111 beside its own corresponding cylindrical lens 111, the edge of each light transmitting structure 121 has a gap with the edge of the corresponding cylindrical lens 111 in the first direction. Furthermore, when the light beam transmitted by each light transmitting structure 121 propagates to the lens layer 11 at a certain divergence angle for a certain distance, the probability of occurrence of light crosstalk is still low.

At this time, according to the divergence angle of the light beam transmitted by the light-transmitting structure 121 and the distance between the light-transmitting structure 121 and the cylindrical lens 111, the gap between the edge of each light-transmitting structure 121 and the edge of the corresponding cylindrical lens 111 in the first direction can be reasonably set, so as to further avoid the problem of light crosstalk between different cylindrical lenses 111.

The light shielding layer 12 further includes a first reflective film. The first reflective film surrounds the peripheral side of at least one light transmissive structure 121. The first reflective film is used for reflecting light on the side of the first reflective film facing away from the cylindrical lens 111. It can be understood that, when the light shielding layer 12 shields the light incident surface side of the cylindrical lens 111, only a portion of the light emitted from the backlight module to the light shielding layer 12 can be transmitted from the light transmitting structure 121, and at this time, a portion of the light emitted to the area outside the light transmitting structure 121 of the light shielding layer 12 can be reflected back to the backlight module by the first reflective film for recycling, and then the light reflected back to the backlight module can be emitted to the light shielding layer again and transmitted from the light transmitting structure 121; therefore, the light transmittance of the light transmitted by the light shielding layer 12 can be increased by providing the first reflective film to increase the final light output of the entire display panel 100 and ultimately increase the brightness of the display panel 100.

Specifically, the light emitted from the backlight module to the first reflective film is reflected back and forth between the backlight module and the first reflective film until the light reflected back and forth is transmitted from the light transmitting structure 121 when the light is emitted to the light transmitting structure 121, so that the brightness of the entire display panel 100 is improved.

In some embodiments, the light shielding layer 12 may be a reflective film attached to the light transmitting layer 13, where the light shielding layer 12 is disposed with a plurality of first through holes, and each first through hole forms one of the light transmitting structures 121.

Specifically, the first reflective film may be a silver reflective film, a white ink layer, or the like, which is not limited in the embodiment of the present application. Since the light transmitting structure 121 has a small area, the first reflective film may be processed by a nanoimprint technique in order to secure the accuracy of the light transmitting structure 121.

The display panel 100 may further include a liquid crystal display layer, which may be disposed on the light-incident side of the light-shielding layer. Furthermore, when the light of the backlight module passes through the liquid crystal display layer, the corresponding sub-pixels on the liquid crystal display layer can be lightened, and the light is continuously transmitted from the light shielding layer 12 and then deflected by the cylindrical lens 111, so that a left-eye display image is independently output to the left eye of a user or a right-eye display image is independently output to the right eye of the user.

With continued reference to fig. 7, fig. 7 is a schematic structural diagram of a liquid crystal display layer of the display panel shown in fig. 3. Alternatively, the liquid crystal display layer 14 may be disposed on the light-emitting side of the lenticular lens 111. Further, a part of the light deflected by the lenticular lens 111 may pass through a region for forming a left-eye display image in the liquid crystal display layer 14 to output the left-eye display image to the left eye of the user; and, another portion of the light deflected by the lenticular lens 111 may pass through an area for forming a right-eye display image in the liquid crystal display layer 14 to output the right-eye display image to the right eye of the user.

The liquid crystal display layer 14 includes a first polarizer 144, and the first polarizer 144 is used for resolving polarized light after being electrically modulated by liquid crystal to generate contrast, so as to generate a display image. It is understood that the transmission axis of the first polarizer 144 and the transmission axis of the lenticular lens 111 should be the same, so that the light transmitted by the lenticular lens 111 can pass through the liquid crystal display layer 14, and finally, the imaging of the entire display panel 100 is achieved.

It is also understood that the lens layer 11 is not generally disposed at the outermost layer of the display panel 100 in the related art. Such as the outer side of the lens layer 11 may also be provided with a layer structure of touch layers, transparent cover plates, etc. At this time, since the light emitting surface of the cylindrical lens 111 is a convex curved surface, a first cavity is defined between the convex curved surfaces of two adjacent cylindrical lenses 111 and the layered structure of the light emitting side. Part of the light emitted from the cylindrical lens 111 is easy to form stray light in the cavity, and the part of the stray light is easy to cause moire in an image picked up by eyes of a user after being emitted from the display panel 100, thereby affecting the display effect of the display panel 100.

In the embodiment of the present application, the cylindrical lens 111 is disposed on the light-entering side of the liquid crystal display layer 14, and the first cavity is defined between the light-emitting surface of the cylindrical lens 111 and the liquid crystal display layer 14. At this time, the polarization direction of the stray light in the first cavity is different from the transmission axis of the first polarizer 144, and thus cannot pass through the first polarizer 144. Therefore, the part of the stray light cannot be emitted out of the display panel 100 to be picked up by the eyes of the user, and finally, the moire of the image picked up by the user can be avoided. It can be seen that the display effect of the display panel 100 can be improved by disposing the liquid crystal display layer 14 on the light-emitting side of the lens layer 11.

It can be further appreciated that, in the embodiment of the present application, the first polarizer 144 of the liquid crystal display layer 14 is multiplexed to prevent the stray light at the light-emitting surface of the lenticular lens 111 from emitting outside the display panel 100, and compared with the embodiment of the present application in which a layer of other polarizers or functional components are disposed outside the light-emitting surface of the lenticular lens 111 to solve the problem of moire, the embodiment of the present application has the advantages of low cost and light weight.

In the following, the technical solution of the embodiment of the present application will be further explained and explained by taking the example that the cylindrical lens 111 is disposed on the light-entering side of the liquid crystal display layer 14.

For example, the liquid crystal display layer 14 may include a TFT (Thin Film Transistor ) array substrate 141, a liquid crystal layer 142, a color filter 143, and a first polarizer 144. The TFT array substrate 141 is disposed on the light emitting side of the lenticular lens 111, the liquid crystal layer 142 is disposed on the light emitting side of the TFT array substrate 141, the color filter 143 is disposed on the light emitting side of the liquid crystal layer 142, and the first polarizer 144 is disposed on the light emitting side of the color filter 143. Further, the light deflected by the lenticular lens 111 may sequentially pass through the TFT array substrate 141, the liquid crystal layer 142, the color filter 143, and the first polarizer 144 and then be emitted out of the display panel 100, so as to output a display image to a user.

In some embodiments, the color filter 143 includes a number of sub-pixels 1431 arranged in an array. Along the direction in which the plurality of cylindrical lenses 111 are arranged, a plurality of sub-pixels 1431 are correspondingly arranged between the central axis L1 and each side edge of the cylindrical lenses 111.

The sub-pixels 1431 include a first sub-pixel 1431a provided at the left front side of each lenticular lens 111 and a second sub-pixel 1431b provided at the right front side of each lenticular lens 111, for example. Further, the light transmitted through the light transmitting structure 121 on the right rear side of each lenticular lens 111 can be deflected to the first sub-pixel 1431a directed toward the left front side of the lenticular lens 111 to illuminate the first sub-pixel 1431a and output to the right eye of the user, and finally the right eye display image composed of the plurality of first sub-pixels 1431a can be output to the right eye of the user. Accordingly, the light transmitted through the light-transmitting structure 121 on the left rear side of each lenticular lens 111 can be deflected to the second sub-pixel 1431b directed toward the right front side of the lenticular lens 111 to illuminate the second sub-pixel 1431b and output to the left eye of the user, and finally the right eye display image composed of the plurality of first sub-pixels 1431a can be output to the right eye of the user.

In some embodiments, along the direction in which the plurality of cylindrical lenses 111 are arranged, a column of sub-pixels 1431 is disposed between the central axis L1 of the cylindrical lens 111 and each side edge, and each column of sub-pixels 1431 is arranged along a direction parallel to the central axis L1 of the cylindrical lens 111.

The light transmitted by each light transmissive structure 121 can be deflected via the lenticular lens 111 to one or more sub-pixels 1431 directed into the same column.

For example, at least one light-transmitting structure 121 is disposed between each side edge of the cylindrical lens 111 along the first direction and the central axis L1. A first through hole with a long shape may be disposed at the left rear side of each cylindrical lens 111 as the light-transmitting structure 121, and the light transmitted by the light-transmitting structure 121 is deflected by the cylindrical lens 111 and then is injected into all the sub-pixels 1431 in the second sub-pixels 1431b at the right front side of the cylindrical lens 111, so that a first light-transmitting structure 121 can light a row of sub-pixels 1431.

Alternatively, the number of the light-transmitting structures 121 on the right rear side of each cylindrical lens 111 may be equal to the number of the sub-pixels 1431 located in the left front side, so that the light transmitted by each light-transmitting structure 121 on the right rear side of each cylindrical lens 111 may be deflected by the cylindrical lens 111 and then be emitted into only one sub-pixel 1431 on the left front side, and thus each light-transmitting structure 121 may light up one sub-pixel 1431.

Of course, the number of the light-transmitting structures 121 on the right rear side of the cylindrical lens 111 may be smaller than the number of the sub-pixels 1431 on the left front side, so that the light transmitted by one light-transmitting structure 121 on the right rear side of the cylindrical lens 111 may be incident into two, three, four or even five sub-pixels 1431 on the left front side, and then one light-transmitting structure 121 may light up two, three, four or even five sub-pixels.

With continued reference to fig. 8, fig. 8 is a schematic view of a light path of the display panel shown in fig. 7. It will be appreciated that, since the light beam transmitted by the light-transmitting structure 121 has a certain divergence angle, when the light beam transmitted by the light-transmitting structure 121 strikes the layer where the sub-pixel 1431 is located, the coverage area of the light beam is larger than that of the light beam at the light-transmitting structure 121. Therefore, if the plurality of cylindrical lenses 111 are arranged along the first direction, and if the width of the light-transmitting structure 121 in the first direction is greater than or equal to the width of the sub-pixel 1431 in the first direction, the light beam transmitted by the single light-transmitting structure 121 may be deflected by the cylindrical lenses 111 to propagate along the specific direction, and the light beam transmitted by the first light-transmitting structure 121 may be incident into the adjacent first sub-pixel 1431a and second sub-pixel 1431b at the same time, so that the adjacent first sub-pixel 1431a and second sub-pixel 1431b are illuminated by the light beam in the same direction and then output to the same eye of the user. However, the adjacent first and second sub-pixels 1431a and 1431b should be lighted by light rays of different directions and output into different eyes of the user to form a left-eye display image or a right-eye display image. It can be seen that if the width of the light-transmitting structure 121 in the first direction is greater than or equal to the width of the sub-pixel 1431 in the first direction, the sub-pixel 1431 supposed to be seen by the left eye and the sub-pixel 1431 supposed to be seen by the right eye may be seen by the left eye of the user at the same time, and the sub-pixel 1431 supposed to be seen by the right eye and the sub-pixel 1431 supposed to be seen by the left eye of the user may be seen by the right eye of the user at the same time, which eventually results in a reduced stereoscopic image display effect seen by the user.

Based on this, the width of the light transmitting structure 121 in the first direction is smaller than the width of the sub-pixel 1431 in the first direction.

Illustratively, the width of the light-transmitting structure 121 in the first direction is three-seventh, one-half, or four-seventh, etc., of the width of the sub-pixel 1431 in the first direction, which is not limited by the embodiment of the present application.

In some embodiments, the radius of curvature of the light exit surface of the cylindrical lens 111 is R. The maximum distance between the light-transmitting structure 121 and the light-emitting surface of the cylindrical lens 111 is D1, where D1 is less than or equal to 2R and greater than or equal to 1/4R. Illustratively, D1 is equal to 2R, 3/2R, 5/4R, R, 3/4R, or 1/4R.

It can be understood that, since the light emitting surface of the cylindrical lens 111 is a convex surface, the divergence angle of the light emitted from the cylindrical lens 111 is gradually increased as D1 is reduced. At this time, too large divergence angle of the emitted light of the lenticular lens 111 may cause the light beam emitted in the single direction to simultaneously illuminate the first subpixel 1431a and the second subpixel 1431b adjacent to each other in the first direction, thereby causing crosstalk of the display panel 100. When D1 is equal to 2R, the light emitted from the lenticular lens 111 is parallel light, and the divergence angle is smaller, so that the first sub-pixel 1431a and the second sub-pixel 1431b adjacent to each other along the first direction are less likely to be lighted, and the probability of crosstalk of the display panel 100 can be reduced. Accordingly, when D1 is greater than 1/4R, the divergence angle of the outgoing light of the cylindrical lens 111 is too large, which is liable to cause crosstalk.

In some embodiments, the cylindrical lens 111 is attached to the frame of the liquid crystal display layer 14, that is, four sides of the lens layer 11 are attached and fixed to four sides of the liquid crystal display layer 14 through the annular second optical adhesive layer.

The second optical adhesive layer may be OCA (Optically Clear Adhesive) optical adhesive, or may be other types of optical adhesive, which is not limited in the embodiment of the present application.

With continued reference to fig. 9, fig. 9 is a schematic diagram illustrating a full-bonding structure of the liquid crystal display layer and the lens layer of the display panel shown in fig. 7. Alternatively, the lenticular lens 111 and the liquid crystal display layer 14 may be fully bonded, i.e. the first optical adhesive layer 15 is filled everywhere between the lenticular lens 111 and the liquid crystal display layer 14. It can be understood that, compared with the frame bonding method, the full bonding method can eliminate air between the lens layer 11 and the liquid crystal display layer 14, thereby greatly reducing light reflection, reducing light loss, improving brightness, enhancing display effect of the screen, and making the picture more transparent.

The first optical adhesive layer 15 may be OCA (Optically Clear Adhesive) optical adhesive, or may be other types of optical adhesive, which is not limited in the embodiment of the present application.

With continued reference to fig. 10, fig. 10 is a schematic structural diagram of a backlight module of the display panel shown in fig. 7. The display panel 100 may further include a backlight module 16, where the backlight module 16 is disposed on a side of the light shielding layer 12 facing away from the lens layer 11. Furthermore, part of the light emitted by the backlight module 16 can be transmitted from the light-transmitting structure 121 of the light-shielding layer 12 to the lens layer 11. The backlight module 16 may be a direct type backlight module or a side-in type backlight module, which is not limited in the embodiment of the present application.

The backlight module 16 is illustratively a direct type backlight module. The direct type backlight module may include an LED light source 161, a light guide plate 162, and a second polarizer 163. The second polarizer 163 is disposed on the light-entering side of the light-shielding layer 12, and the light guide plate 162 is disposed on the light-entering side of the second polarizer 163. The LED light source 161 is disposed at one side of the light guide plate 162 along the first direction. The light emitted by the LED light source 161 may further pass through the light guide plate 162 to form a surface light source directed to the light shielding layer 12, the surface light source passes through the second polarizer 163 in the process of being directed to the light shielding layer 12, and the transmission axes of the first polarizer 144, the cylindrical lens 111 and the second polarizer 163 are the same, so that the light emitted by the light guide plate 162 can finally light the whole display panel 100 to form a display image.

The second polarizer 163 may be a reflective polarizer. Furthermore, a portion of the light emitted from the light guide plate 162 toward the lens layer 11, in which the polarization direction is parallel to the transmission axis of the second polarizer 163, may pass through the second polarizer 163, and a portion of the light emitted from the light guide plate 162, in which the polarization direction is not parallel to the transmission axis of the second polarizer 163, may be reflected back to the light guide plate 162 for recycling, so as to improve the brightness of the entire display panel 100.

The direct type backlight module may further include a second reflective film 164, where the second reflective film 164 is disposed on a side of the light guide plate 162 opposite to the second polarizer 163, so as to avoid loss caused by emission of a portion of light propagating in the light guide plate 162 from a side of the light guide plate 162 opposite to the second polarizer 163. Accordingly, the second reflective film 164 may improve brightness of the entire display panel 100. In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

The display panel 100 and the stereoscopic display device provided by the embodiments of the present application are described in detail, and specific examples are applied herein to illustrate the principles and embodiments of the present application, and the description of the above embodiments is only for helping to understand the method and core ideas of the present application; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the ideas of the present application, the present description should not be construed as limiting the present application in summary.

Claims

1. A display panel, comprising:

2. The display panel of claim 1, wherein the light transmissive structure comprises a first via disposed in the light shielding layer.

3. The display panel of claim 1, further comprising a first light transmissive layer between the lens layer and the light blocking layer, the light blocking layer being attached to the first light transmissive layer.

4. A display panel according to claim 3, wherein a side of the first light-transmitting layer adjacent to the light-shielding layer has a first smooth surface, and light transmitted by the light-transmitting structure is capable of passing through the first light-transmitting layer via the first smooth surface.

5. The display panel according to claim 1, wherein at least one light-transmitting structure is correspondingly disposed between a central axis of the plurality of lenticular lenses and each side edge along a direction in which the plurality of lenticular lenses are arranged.

6. The display panel of claim 5, wherein an edge of each light-transmitting structure has a gap from an edge of a corresponding one of the lenticular lenses along a direction in which the plurality of lenticular lenses are arranged.

7. The display panel according to any one of claims 1 to 6, wherein the light shielding layer further comprises a first reflective film, the first reflective film surrounds the peripheral side of at least one of the light transmitting structures, and the first reflective film is used for reflecting light rays on a side of the first reflective film facing away from the lenticular lens.

8. The display panel according to any one of claims 1 to 6, further comprising a liquid crystal display layer provided on a light-emitting side of the lenticular lens, the liquid crystal display layer comprising a first polarizer having a transmission axis identical to a transmission axis of the lenticular lens.

9. The display panel of claim 8, wherein the liquid crystal display layer further comprises a color filter, the color filter array being provided with a plurality of subpixels;

and a plurality of sub-pixels are correspondingly arranged between the central axis of the cylindrical lens and each side end edge along the arrangement direction of the plurality of cylindrical lenses.

10. The display panel according to claim 9, wherein a row of the sub-pixels is arranged between a central axis of the lenticular lens and each side end edge along a direction in which the plurality of lenticular lenses are arranged, and each row of the sub-pixels is arranged in a direction parallel to the central axis of the lenticular lens;

11. The display panel according to claim 9, wherein a width of the light-transmitting structure is smaller than a width of the sub-pixel along an arrangement direction of the plurality of lenticular lenses.

12. The display panel according to claim 8, wherein the radius of curvature of the light exit surface of the lenticular lens is R, and the maximum distance between the light transmitting structure and the light exit surface of the lenticular lens is 2R or less and 1/4R or more.

13. The display panel of claim 8, wherein the lens layer is attached to the liquid crystal display layer frame or is fully attached.

14. The display panel according to any one of claims 1 to 6, further comprising a liquid crystal display layer provided on a light-entering side of the light shielding layer.

15. The display panel according to any one of claims 1 to 6, further comprising a backlight module, wherein the backlight module is disposed on a side of the light shielding layer facing away from the lens layer, and the backlight module is a direct type backlight module or a side-in type backlight module.

16. A stereoscopic display device, comprising:

a display panel according to any one of claims 1 to 15; and

and the shell is used for bearing the display panel.