CN114360379B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN114360379B CN114360379B CN202111678970.3A CN202111678970A CN114360379B CN 114360379 B CN114360379 B CN 114360379B CN 202111678970 A CN202111678970 A CN 202111678970A CN 114360379 B CN114360379 B CN 114360379B
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- 239000000758 substrate Substances 0.000 claims description 64
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 244000144985 peep Species 0.000 abstract description 15
- 230000002265 prevention Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 8
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
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Abstract
The application provides a display panel and a display device, wherein the display panel comprises a display unit and a peep-proof module, and the peep-proof module comprises a first shading layer and a second shading layer which are arranged at intervals along a plane perpendicular to the display panel. The first light shielding layer comprises a first light leakage channel, a second light leakage channel and a first light shielding part positioned between the first light leakage channel and the second light leakage channel. The second light shielding layer comprises a second light shielding part, a third light leakage channel, a third light shielding part and a fourth light leakage channel. The orthographic projection of each light leakage channel of the first light shielding layer on the plane of the display panel is positioned in the orthographic projection of the second light shielding layer on the plane of the display panel and the light shielding part which is arranged opposite to the second light shielding layer. The light rays emitted from the peep-proof module can be emitted from multiple directions, so that multidirectional peep prevention is realized.
Description
Technical Field
The application relates to the field of display, in particular to a display panel and a display device.
Background
With the development of display technology, the application range of electronic devices with display screens is becoming wider and wider. The display screen based on the electronic equipment has a larger visual angle, so that users at different visual angles can acquire information displayed by the display screen. In order to protect the privacy of users, a display screen with a peep-proof function has been developed.
However, the existing peep-proof display screen has poor peep-proof effect, and can only realize peep-proof in one direction or two directions, but cannot realize peep-proof in multiple angles, so that a display screen capable of realizing multi-direction peep-proof is urgently needed.
Disclosure of Invention
The application provides a display panel and a display device, which are used for realizing peep prevention in multiple directions of a display screen.
In a first aspect, an embodiment of the present application provides a display panel having a light emitting area and a peep preventing area in a display area, the display panel including:
a display unit located in the light emitting region;
the peep-proof module is positioned in the peep-proof area and comprises a first shading layer and a second shading layer which are arranged at intervals along a plane vertical to the display panel,
wherein the first light shielding layer comprises a first light shielding part, a first light leakage channel extending along a first direction and a second light leakage channel extending along a second direction, the first light shielding part is positioned between the first light leakage channel and the second light leakage channel, the first direction and the second direction are intersected,
the second light shielding layer comprises a second light shielding part and a third light leakage channel which are arranged along the first direction in an extending mode, and a third light shielding part and a fourth light leakage channel which are arranged along the second direction in an extending mode.
The front projection of the first light leakage channel on the plane of the display panel is positioned in the front projection of the second light shielding part on the plane of the display panel, the front projection of the second light leakage channel on the plane of the display panel is positioned in the front projection of the third light shielding part on the plane of the display panel, and the front projections of the third light leakage channel and the fourth light leakage channel on the plane of the display panel are both positioned in the front projection of the first light shielding part on the plane of the display panel.
In a second aspect, an embodiment of the present application further provides a display apparatus, including the display panel.
The display panel and the display device provided by the application have at least the following beneficial effects: light enters the peep-proof module through the first light leakage channel and the second light leakage channel, and is blocked by the second shading part and the third shading part which are arranged above the first light leakage channel and the second light leakage channel. And part of light rays are blocked, and part of light rays are emitted from the third light leakage channel positioned beside the second light shielding part and the fourth light leakage channel positioned beside the third light shielding part, so that the emergent angle of the light rays is changed. Based on the first light leakage channel and the third light leakage channel, the second light leakage channel and the fourth light leakage channel are arranged along the first direction, so that light rays emitted from the third light leakage channel are mainly distributed along the first direction, and light rays emitted from the fourth light leakage channel are mainly distributed along the second direction. The first direction and the second direction are intersected, and when the display panel displays, light rays emitted from the peep-proof module can be distributed along the first direction and the second direction, so that multidirectional peep-proof is realized.
Drawings
Objects and advantages will become more apparent upon reading the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings, in which like or similar reference characters designate like or similar features, and in which the drawings are not to scale.
FIG. 1 is a top view of a display panel according to an embodiment of the present application;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a cross-sectional view taken along the direction B-B in FIG. 2;
FIG. 4 is a cross-sectional view taken along the direction C-C;
FIG. 5 is a top view of a first light shielding layer of a display panel according to an embodiment of the present application;
FIG. 6 is a top view of a second light shielding layer of a display panel according to an embodiment of the present application;
FIG. 7 is a cross-sectional view of a display panel provided by an embodiment of the present application;
FIG. 8 is a cross-sectional view of a display panel according to an embodiment of the present application at another angle
Fig. 9 is a top view of a first light shielding layer of a display panel according to another embodiment of the present application;
fig. 10 is a top view of a first light shielding layer of a display panel according to another embodiment of the present application;
FIG. 11 is a top view of a first light shielding layer of a display panel according to another embodiment of the present application;
fig. 12 is a top view of a first light shielding layer of a display panel according to another embodiment of the present application;
fig. 13 is a top view of a first light shielding layer of a display panel according to another embodiment of the present application;
fig. 14 is a top view of a display panel according to another embodiment of the application
Fig. 15 is a cross-sectional view of a display panel according to another embodiment of the present application;
fig. 16 is a cross-sectional view of a display panel according to another embodiment of the present application;
fig. 17 is a top view of a display device according to another embodiment of the present application.
In the drawings, the drawings are not necessarily to scale.
Marking:
10. a display panel; 11. a display unit; 111. a first subpixel; 112. a second subpixel; 113. a third sub-pixel; 12. a peep-proof module; 121. a first light shielding layer; 1211. a first light shielding portion; 1212. a first light leakage channel; 1213. a second light leakage channel; 12131. a first sub-channel; 12132. a second sub-channel; 122. a second light shielding layer; 1221. a second light shielding portion; 1222. a third light shielding section; 1223. a third light leakage channel; 1224. a fourth light leakage channel; 13. a first substrate; 14. a liquid crystal layer; 15. a second substrate; 16. a backlight module; 100. a display device.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to illustrate the application and are not configured to limit the application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the application by showing examples of the application.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
It will be understood that when an element is referred to as being "on" or "over" another layer, another region, it can be directly on the other layer or another region or additional layers or regions can be included between the element and the other layer. And if the component is turned over, one layer, one region will be located "under" or "beneath" another layer.
When a user uses a display device such as a mobile phone or a tablet, the display content of the display device is prevented from being seen by a person other than the user. The peep-proof module 12 may be disposed in the display panel 10, so that the display device can emit interference light to affect the sight of the peep-proof object, so that the peep-proof object cannot see the normally displayed image.
In order to realize multi-directional peep prevention of a display device, a display panel 10 is provided in an embodiment of the present application.
As shown in fig. 1 to 6, the display panel 10 has a light emitting area and a peep preventing area in a display area, and the display panel 10 includes a display unit 11 and a peep preventing module 12. The display unit 11 is located in the light emitting area, and the peep preventing module 12 is located in the peep preventing area. The peep-proof module 12 includes a first light shielding layer 121 and a second light shielding layer 122 arranged at intervals along a plane perpendicular to the display panel 10.
The first light shielding layer 121 includes a first light shielding portion 1211, a first light leakage channel 1212 extending in a first direction, and a second light leakage channel 1213 extending in a second direction, and the first direction and the second direction intersect.
The second light shielding layer 122 includes a second light shielding portion 1221 and a third light leakage path 1223 extending in the first direction, and a third light shielding portion 1222 and a fourth light leakage path 1224 extending in the second direction. The front projection of the first light leakage channel 1212 on the plane of the display unit 11 is located in the front projection of the second light shielding portion 1221 on the plane of the display panel 10, the front projection of the second light leakage channel 1213 on the plane of the display panel 10 is located in the front projection of the third light shielding portion 1222 on the plane of the display panel 10, and the front projections of the third light leakage channel 1223 and the fourth light leakage channel 1224 on the plane of the display panel 10 are both located in the front projection of the first light shielding portion 1211 on the plane of the display panel 10.
For convenience of explanation, the first light shielding layer 121 is located at a side away from the light emitting surface of the display panel 10, and the second light shielding layer 122 is located at a side close to the light emitting surface of the display panel 10.
When the display panel 10 emits light, a part of the light enters the display unit 11, so that the display unit 11 emits light to finally enable the display panel 10 to display content. When the light reaches the first light shielding layer 121, part of the light enters the peep-proof module 12 and can pass through the first light shielding layer 121 through the first light leakage channel 1212 and the second light leakage channel 1213 of the first light shielding layer 121. After the light passes through the first light shielding layer 121, the light can enter the second light shielding layer 122, and be emitted from the peep-proof module 12 through the second light shielding layer 122. Since the second light shielding portion 1221 of the second light shielding layer 122 is located at a side close to the light emitting surface of the display panel 10 in a direction perpendicular to the plane of the display panel 10, a portion of the light entering from the first light leakage path 1212 is blocked by the second light shielding portion 1221, and an unblocked portion is emitted from the third light leakage path 1223 located beside the second light shielding portion 1221 at the emission angle α. At this time, the angle between the outgoing light and the plane of the display panel 10 is β, α+β=90°. It can be seen that, when the peep-preventer is within the angle range of the angle β, the light emitted from the peep-preventer 12 is perceived, and the light affects the sight of the peep-preventer, so that the peep-preventer cannot see the display content of the display panel 10 clearly.
Similarly, since the third light shielding portion 1222 of the second light shielding layer 122 is also located at a side close to the light emitting surface of the display panel 10, a part of the light entering from the second light leakage channel 1213 is also blocked by the third light shielding portion 1222, and another part of the light exits from the fourth light leakage channel 1224 located beside the third light shielding portion 1222 at a certain angle, so that the sight line of the peep-person can be affected.
In addition, the first light leakage channel 1212 and the third light leakage channel 1223 are disposed along the first direction, and the light emitted from the third light leakage channel 1223 actually exits in a direction forming an angle with the plane of the display panel 10, i.e. exits in the third direction, so that the light exiting from the third light leakage channel 1223 mainly exits in the third direction. The fourth light leakage channel 1224 and the second light leakage channel 1213 extend along the second direction, so that the light emitted from the fourth light leakage channel 1224 also exits along a direction forming a certain included angle with the plane of the display panel 10, i.e. exits along the fourth direction.
Since the projection of the third direction on the plane of the display panel 10 is the second direction and the projection of the fourth direction on the plane of the display panel 10 is the first direction, the first direction and the second direction intersect, so the third direction also intersects the fourth direction. Accordingly, the light exiting direction from the third light leakage path 1223 is different from the light exiting direction from the fourth light leakage path 1224. The light exiting from the third light leakage channel 1223 may realize peep prevention in the third direction, and the light exiting from the fourth light leakage channel 1224 may realize peep prevention in the fourth direction.
Therefore, when the display panel 10 emits light, the light emitted from the peep-proof module 12 can be emitted in the third direction and the fourth direction. Since the projection of the third direction on the plane of the display panel 10 is the second direction, and the projection of the fourth direction on the plane of the display panel 10 is the first direction, when the peep-proof person is located in the first direction or the second direction of the display panel 10 and is in the peep-proof angle, the light emitted from the peep-proof module 12 can be sensed, so as to realize multi-directional peep-proof and improve the peep-proof effect of the whole display panel 10.
In the above embodiments, the second light shielding layer 122 is located near the light emitting surface of the display panel 10, and in some embodiments, the first light shielding layer 121 may be disposed near the light emitting surface of the display panel 10, which is not limited herein.
The display panel 10 is described below in connection with a specific embodiment.
Illustratively, when the display panel 10 described above is a liquid crystal display panel. Referring to the embodiment shown in fig. 7 and 8, along the direction perpendicular to the light emitting surface of the display panel 10, the display panel 10 includes an array substrate, a liquid crystal layer 14, and a color film substrate, the array substrate includes a first substrate 13, the color film substrate includes a second substrate 15, and the first substrate 13 and the second substrate 15 are substrate substrates of the array substrate and the color film substrate, respectively, and may be glass substrates or flexible substrates. Wherein, the first substrate 13 is away from the second substrate 15 and is provided with a backlight module 16. The number of the display units 11 may be plural, and the plural display units 11 may be distributed in an array arrangement on a plane thereof. Each display unit 11 is a single pixel unit, and each pixel unit may include a red sub-pixel, a green sub-pixel, and a blue sub-pixel. Each pixel unit is located in the light emitting area, and the peep-proof module 12 is located in the peep-proof area. The peep-proof module 12 includes a first light shielding layer 121 and a second light shielding layer 122 disposed at intervals along a direction perpendicular to a plane of the display panel 10.
In this embodiment, the first substrate 13 is a substrate of an array substrate, and the second substrate 15 is a substrate of a color film substrate, which is described as an example, it is to be understood that in other embodiments, the first substrate 13 may be a substrate of a color film substrate, and the second substrate 15 may be a substrate of an array substrate, which is not particularly limited in this disclosure. It can be understood that the array substrate and the color film substrate further comprise other film structures, which are not shown in the figure.
The first light shielding layer 121 includes a first light shielding portion 1211, a first light leakage path 1212 extending in a first direction, and a second light leakage path 1213 extending in a second direction. The second light shielding layer 122 includes a second light shielding portion 1221 and a third light leakage channel 1223 extending along the first direction, and a third light shielding portion 1222 and a fourth light leakage channel 1224 extending along the second direction.
Wherein, the orthographic projection of the first light leakage channel 1212 on the first substrate 13 is located within the orthographic projection of the second light shielding portion 1221 on the first substrate 13, and the orthographic projection of the second light leakage channel 1213 on the first substrate 13 is located within the orthographic projection of the third light shielding portion 1222 on the first substrate 13. The orthographic projections of the third light leakage channel 1223 and the fourth light leakage channel 1224 on the first substrate 13 are located within the orthographic projection of the first light shielding portion 1211 on the first substrate 13. That is, the light leakage channels of the first light shielding layer 121 and the light leakage channels of the second light shielding layer 122 are projected on the first substrate 13 in a crossed arrangement.
When the display panel 10 emits light, the light emitted by the backlight module 16 can pass through the peep-proof module 12 and be emitted from the second substrate 15.
When the light reaches the first light shielding layer 121 of the peep-proof module 12, a part of the light can pass through the first light shielding layer 121 from the first light leakage channel 1212 and the second light leakage channel 1213, and then enter the second light shielding layer 122. In the direction perpendicular to the plane of the first substrate 13, since the second light shielding portion 1221 of the second light shielding layer 122 is located at a side away from the first substrate 13 and the first light leakage path 1212 is located at a side close to the first substrate 13, the second light shielding portion 1221 can block the light emitted from the first light leakage path 1212, and the portion of the light that is not blocked can only be emitted from the third light leakage path 1223 located at a side of the second light shielding portion 1221.
Also, the light passing through the second light leakage path 1213 is blocked by the third light shielding portion 1222 provided away from the first substrate 13, and a portion of the light that is not blocked can be emitted only from the fourth light leakage path 1224 located at the side of the third light shielding portion 1222.
The fourth light leakage channel 1224 and the second light leakage channel 1213 are extended along the second direction, which intersects the first direction, based on the extended arrangement of the first light leakage channel 1212 and the third light leakage channel 1223 along the first direction. The light emitted from the third light leakage path 1223 is mainly emitted in the third direction. The light emitted from the fourth light leakage channel 1224 exits mainly along the fourth direction.
When the display panel 10 displays a picture, the light emitted from the peep-proof module 12 can exit along the first direction and the second direction. The first direction and the second direction in the embodiment are referred to, that is, the first direction is the up-down direction, and the second direction is the left-right direction, so that the light emitted by the peep-proof module 12 can affect the sight of the peep-proof person positioned at the up-down, left-right directions of the display panel 10, so that the peep-proof person cannot see the display content of the display panel 10 clearly, thereby realizing peep-proof at a plurality of directions and improving the peep-proof effect of the whole display panel 10.
It should be noted that the display panel 10 can be applied to an LCD, an OLED, and a Micro LED. In the OLED and Micro LED, a light emitting element needs to be disposed at a position corresponding to the light shielding layer to ensure that light passes through the peep-proof area, and the working principle based on the peep-proof module is similar to that of the peep-proof module on the liquid crystal display panel, and will not be described in detail here.
In order to ensure the angle of light emitted from the peep-proof module 12, the relationship between the first light shielding layer 121 and the second light shielding layer 122 of the peep-proof module 12 may be adjusted.
With continued reference to fig. 5 to 8, in this embodiment, the distance between the first light shielding layer 121 and the second light shielding layer 122 is H in the direction perpendicular to the plane of the display panel 10. The front projection of the first light shielding portion 1211 on the plane of the display panel 10 and the front projection of the second light shielding portion 1221 on the plane of the display panel 10 have overlapping regions, and the length of the overlapping regions along the first direction and/or the second direction is L1,0< L1<0.577×h.
And/or, the front projection of the first light shielding portion 1211 on the plane of the display panel 10 and the front projection of the third light shielding portion 1222 on the plane of the display panel 10 have overlapping areas, and the length of the overlapping areas along the first direction and/or the second direction is L2,0< L2<0.577×h.
It should be noted that, the light emitted from the backlight module 16 has an exit angle a, and the range of the exit angle a is equal to or less than ±90°. Because the light passes through the layers of the multi-layer film before reaching the privacy module 12, the angle of the light is converged to angle B after the light passes through the layers of the multi-layer film and the air refracts. The range of the angle B is less than or equal to +/-41.8 degrees. Thus, the light ultimately enters the privacy module 12 at an incident angle B. After the light enters the peep-proof module 12, part of the light is blocked by the second light shielding portion 1221 and the third light shielding portion 1222 of the second light shielding layer 122. Taking the second light shielding portion 1221 as an example, the orthographic projection of the second light shielding portion 1221 on the plane on which the display panel 10 is located and the orthographic projection of the first light shielding portion 1211 on the plane on which the display unit 11 is located have an overlapping region whose length in the first direction is L1. The size of L1 affects the degree of blocking of light by the second light shielding portion 1221. When L1 is larger, the light emitted from the first light leakage channel 1212 can be totally blocked by the second light shielding portion 1221, that is, the light cannot pass through the peep preventing module 12. The value of the overlap area L1 is set according to the incident angle of the light into the privacy module 12, that is, the relationship between the angle B and the interval H between the first light shielding layer 121 and the second light shielding layer 122. The relationship between the three is l1=h=tan 41.8°, i.e., l1=0.577×h. In order to enable light to be emitted from the peep-proof module 12, 0< l1<0.577×h may be made so as to make full use of light emitted from the light leakage channel, thereby realizing the peep-proof function.
It can be understood that the lengths of the overlapping regions along the second direction are the same as L2, L2 and L1, and may also be obtained according to the incident angle of the light entering the peep-proof module 12 and the distance between the first light shielding layer 121 and the second light shielding layer 122, that is, 0< L2<0.577×h. Similarly, the front projection of the third light shielding portion 1222 on the plane of the display panel 10 and the front projection of the first light shielding portion 1211 on the plane of the display panel 10 also have overlapping regions, and the length of the overlapping regions along the first direction and/or the second direction is L2,0< L2<0.577×h. This arrangement is to fully utilize the light, and ensure that the light can be emitted from the peep-proof module 12, so as to realize the peep-proof function.
Second, when the first light shielding layer 121 and the second light shielding layer 122 are both disposed on one side of the substrate, the space between the first light shielding layer 121 and the second light shielding layer 122 is not preferably excessively large. In some embodiments, the spacing H between the first light shielding layer 121 and the second light shielding layer 122 ranges between 1 μm and 20 μm. If the distance between the first light shielding layer 121 and the second light shielding layer 122 is enlarged, the thickness of the film layer where the peep preventing unit is located must be increased. The thick film layer is easy to cause the glass substrate covered on the surface of the film layer to warp, and the film is difficult to flow, and the film breaking phenomenon is easy to occur in the manufacturing process, so that the production efficiency of the whole panel is affected, and the yield is reduced. In addition, the thick film layer is also prone to cause image sticking.
When the first light-shielding layer 121 and the second light-shielding layer 122 are not provided on the same side, that is, when a plurality of film layers are provided between the first light-shielding layer 121 and the second light-shielding layer 122, the interval between the first light-shielding layer 121 and the second light-shielding layer 122 may be 3 μm to 20 μm.
In order to further enhance the peep-proof function, the size of the light leakage channel can be improved by using the light emitted from the peep-proof module 12 to ensure the emergent amount of the light.
Based on the similarity in structure between the first light shielding layer 121 and the second light shielding layer 122, the first light shielding layer 121 will be described as an example.
With continued reference to fig. 5 to 8, in this embodiment, the length of the first light leakage channel 1212 along the first direction is a, and the length of the first light leakage channel 1212 along the second direction is b. Since the third direction peep prevention is mainly achieved by using the first light leakage channel 1212, the first light leakage channel 1212 is extended along the first direction. It can be seen that the length a of the first light leakage channel 1212 along the first direction is longer than the length b of the first light leakage channel 1212 along the second direction.
In order to ensure that enough light can be emitted from the first light leakage channel 1212 while reasonably utilizing the space of the peep-proof module 12, the length a of the first light leakage channel 1212 along the first direction and the length b along the second direction can be set so as to enable 1 μm < b <100 μm and enable 1.ltoreq.a/b.ltoreq.100. Thereby further expanding the opening area of the first light leakage channel 1212 and improving the space utilization rate of the light shielding layer.
As for the second light leakage channel 1213, it may extend from one edge of the first light shielding layer 121 to the other edge. That is, a long hole extending along the second direction is formed in the first light shielding layer 121, and the width of the long hole along the first direction is greater than or equal to 1 micrometer, so as to ensure that enough light can be emitted from the long hole.
Fig. 9 shows a top view of a first light shielding layer 121 according to another embodiment of the present application. In this embodiment, the area of the second light shielding layer 122 may be larger than that of the first light shielding layer 121, so that the boundary of the first light shielding layer 121 missing with respect to the second light shielding layer 122, that is, the boundary of the first light shielding layer 121 near the display unit 11 and the boundary of the display unit 11 form the second light leakage channel 1213. The channel may extend in a second direction. Thus, the second light leakage channel 1213 does not need to be additionally formed on the first light shielding layer 121.
As shown in fig. 10, in some embodiments, at least two first light leakage channels 1212 are provided, and a plurality of first light leakage channels 1212 are sequentially arranged at intervals along the second direction. At least two second light shielding portions 1221 are provided, and the orthographic projection of each first light leakage channel 1212 on the plane of the display panel 10 is located within the orthographic projection of each second light shielding portion 1221 on the plane of the display panel 10.
In this embodiment, the first light leakage channels 1212 are disposed to extend along the first direction, and the plurality of first light leakage channels 1212 are arranged at intervals along the second direction. Light enters the peep-proof module 12 from each first light leakage channel 1212 and is shielded by the second shielding part 1221, so as to ensure a display effect of a narrow viewing angle. The plurality of first light leakage channels 1212 are provided to increase the emergent amount of the light, so as to increase the intensity of the light emergent to the third direction, thereby improving the peep-proof effect of the display panel 10 in the second direction.
In order to improve the uniformity of light leakage of the display panel 10 in all directions, different light leakage channels may be formed in each light shielding layer. Since the light shielding portion of the second light shielding layer 122 and the light leakage channel are arranged in a similar manner to the first light shielding layer 121, the arrangement of the first light leakage channel 1212 and the second light leakage channel 1213 will be described below by taking the first light shielding layer 121 as an example.
In some embodiments, the first light shielding layer 121 is provided with a second light leakage channel 1213 along the first direction in addition to the first light leakage channel 1212 extending along the first direction. At least a portion of the second light leakage channel 1213 is located on at least one side of the first light leakage channel 1212.
With continued reference to fig. 10, in this embodiment, a plurality of first light leakage channels 1212 are sequentially arranged at intervals along the second direction, and a second light leakage channel 1213 is formed on a side of the first light leakage channel 1212 near the display unit 11. Since the first light leakage channel 1212 extends along the first direction, the light emitted from the first light leakage channel 1212 mainly exits in the third direction and partially exits in the fourth direction. In order to compensate the light emission amount in the first direction, so that the light emission amount in the third direction is consistent with the light emission amount in the fourth direction, a second light leakage channel 1213 extending along the second direction may be formed on one side of the first light leakage channel 1212 near the display unit 11, and the length of the second light leakage channel 1213 is longer than that of the first light leakage channel 1212, so that the light emission amount in the third direction may be increased, and thus the light emission amount in the third direction is consistent with the light emission amount in the fourth direction.
Of course, the second light leakage channel 1213 may be formed on both sides of the first light leakage channel 1212 along the first direction.
By way of example, fig. 11 shows that the present application provides another embodiment. In this embodiment, a plurality of first light leakage channels 1212 are sequentially arranged at intervals along the second direction, and second light leakage channels 1213 are respectively provided at both sides of the first light leakage channels 1212 along the first direction.
In this way, the second light leakage channel 1213 extending along the second direction is disposed on both the side of the first light leakage channel 1212 near the display unit 11 and the side facing away from the display unit 11, so as to increase the emergent amount of the light in the first direction. The present embodiment only shows that two second light leakage channels 1213 are disposed at the side of the first light leakage channel 1212 near the display unit 11, and the specific number of the second light leakage channels 1213 may be determined according to practical situations, which is not specifically limited herein.
Fig. 12 shows that the present application provides another embodiment in which a plurality of first light leakage channels 1212 are sequentially spaced apart in the second direction, but the second light leakage channel 1213 includes a first sub-channel 12131 and a second sub-channel 12132. The first sub-channel 12131 is located on at least one side of the plurality of first light leakage channels 1212 arranged at intervals in the second direction. The embodiment shown in fig. 9 only shows the case that the first sub-channel 12131 is located at the right side of the first light leakage channel 1212, it will be understood that in other embodiments, the first sub-channel 12131 may be located at the left side of the first light leakage channel 1212, or the first sub-channel 12131 may be disposed at both the left and right sides of the first light leakage channel 1212. The second sub-channels 12132 are located at least one side of the plurality of first light leakage channels 1212 arranged at intervals in the first direction, that is, at the upper and lower sides of the first light leakage channels 1212.
Similarly, the embodiment shown in fig. 12 illustrates that the second sub-channels 12132 are disposed on both upper and lower sides of the first light leakage channel 1212. In other embodiments, the second sub-channel 12132 may be disposed only on the upper side or the lower side of the first light leakage channel 1212.
The first sub-passages 12131 extend in the second direction and have a plurality of first sub-passages 12131 spaced apart from each other in the first direction. The second sub-channels 12132 are also disposed to extend along the second direction, and the number of the second sub-channels 12132 is also plural, and the plurality of second sub-channels 12132 are respectively located at two sides of two ends of the first sub-channel 12131 extending along the first direction. Wherein the length of the second sub-channel 12132 is longer than the length of the first sub-channel 12131. Two types of second light leakage channels 1213 are provided, and on the basis of guaranteeing uniformity of light rays emitted from the third direction and the fourth direction, more light leakage channels are provided by fully utilizing the space of the peep-proof module 12, so that more light rays can be emitted from the light leakage channels.
In some embodiments, the open area of the first light leakage channel 1212 and the open area of the second light leakage channel 1213 may be equal.
Illustratively, in the embodiment shown in fig. 13, the length of the first light leakage channel 1212 in the first direction is equal to the length of the second light leakage channel 1213 in the second direction, and the length of the first light leakage channel 1212 in the second direction is equal to the length of the second light leakage channel 1213 in the first direction. The lengths of the two light leakage channels in different directions are equal, and the two light leakage channels are square holes with equal sizes, wherein the side length c of the square holes is equal to or less than 1 mu m and equal to or less than 100 mu m. The two light leakage channels are set to be consistent in opening size, so that the processing technology of the light leakage channels is simplified.
As shown in fig. 14, in some embodiments, the display unit 11 is capable of emitting white light and includes a first sub-pixel 111, a second sub-pixel 112, and a third sub-pixel 113 for emitting different color light, and at least part of the peripheral side of the display unit 11 is provided with the peep-proof module 12.
In this embodiment, the peep-proof module 12 is provided beside each display unit 11, but of course, in other embodiments, the peep-proof module 12 may be provided beside only a part of the display units 11. The plurality of display units 11 may be arranged in an array. White light emitted from the display unit 11
The embodiment shown in fig. 14 only shows that one peep-proof module 12 is provided on one side of each display unit 11, it is easily understood that in other embodiments, the peep-proof module 12 may be provided on a side of a part of the display units 11. The setting position with respect to the privacy module 12 is not limited to the position shown in fig. 11. For example: in some embodiments, the peep-proof module 12 of one display unit 11 may be disposed on the left side of the peep-proof unit, and the peep-proof module 12 disposed on the peripheral side of the other display unit 11 may be disposed on the right side of the display unit 11. In addition, the peep-proof module 12 may be disposed above a certain display unit 11, and the like, which is not limited herein. The peep-proof modules 12 are arranged on the periphery of at least part of the display units 11, and the quantity of light emitted from the peep-proof modules 12 can be increased by increasing the number of the peep-proof modules 12, so that the intensity of the light is enhanced, and the peep-proof effect is improved.
With continued reference to fig. 14, this embodiment shows a relationship in which the privacy module 12 and the display unit 11 are disposed in a one-to-one correspondence. In this embodiment, the plurality of display units 11 are also arranged in an array, and each of the privacy modules 12 may be disposed below each of the display units 11. A peep-proof module 12 is disposed on the peripheral side of each display unit 11, so that the light emitted from each peep-proof module 12 can interfere with the display area of the corresponding display unit 11, thereby further improving the peep-proof effect of the display panel 10.
Next, in this embodiment, the peep preventing module 12 corresponding to each display unit 11 is disposed below the display units 11, that is, the peep preventing film is disposed below each row of display units 11, and the disposed positions of the display units 11 are unified. The peep-proof module 12 is also facilitated to be manufactured to improve the processing efficiency of the entire display panel 10.
As shown in fig. 15 and 16, in some embodiments, the display panel 10 further includes a first substrate 13 and a second substrate 15 disposed opposite to each other, and the privacy module 12 may be disposed on the first substrate 13 or the second substrate 15.
Fig. 15 shows that a first light shielding layer 121 and a second light shielding layer 122 are provided on the side of the first substrate 13 facing the second substrate 15. The display panel 10 provided in this embodiment can be applied to an LCD, and the display panel 10 includes a first substrate 13, a first light shielding layer 121, a second light shielding layer 122, a liquid crystal layer 14, and a second substrate 15.
Fig. 16 shows that a first light shielding layer 121 and a second light shielding layer 122 are provided on the side of the second substrate 15 facing the first substrate 13. The display panel 10 provided in this embodiment is also applicable to an LCD, and the display panel 10 includes a first substrate 13, a first light shielding layer 121 of a liquid crystal layer 14, a second light shielding layer 122, and a second substrate 15.
Because there is the counterpoint precision when first base plate 13 and second base plate 15 laminating, when first shading layer 121 and second shading layer 122 set up respectively in first base plate 13 and second base plate 15, owing to receive the influence of counterpoint precision for there is the deviation in the counterpoint of light leak passageway and shading portion, thereby influences display and peep-proof effect, and set up two-layer shading layer at the homonymy can avoid this problem effectively.
In addition, the application also provides a display device 100. As shown in fig. 17, the display device 100 includes the display panel 10 described above. The specific structure of the display panel 10 of the display device 100 refers to the above embodiments, and since the display device 100 adopts all the technical solutions of all the embodiments, at least has all the beneficial effects brought by the technical solutions of the embodiments, and will not be repeated here.
These embodiments are not exhaustive or to limit the application to the precise embodiments disclosed, and according to the application described above. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the application and the practical application, to thereby enable others skilled in the art to best utilize the application and various modifications as are suited to the particular use contemplated. The application is limited only by the claims and the full scope and equivalents thereof.
Claims (12)
1. A display panel having a light emitting area and a privacy area in a display area, the display panel comprising:
a display unit located in the light emitting region;
the peep-proof module is positioned in the peep-proof area and comprises a first shading layer and a second shading layer which are arranged at intervals along the direction vertical to the plane where the display panel is positioned,
wherein the first light shielding layer comprises a first light shielding part, a first light leakage channel extending along a first direction and a second light leakage channel extending along a second direction, the first light shielding part is positioned between the first light leakage channel and the second light leakage channel, the first direction and the second direction are intersected,
the second light shielding layer comprises a second light shielding part and a third light leakage channel which are arranged along the first direction in an extending way, and a third light shielding part and a fourth light leakage channel which are arranged along the second direction in an extending way;
the front projection of the first light leakage channel on the plane of the display panel is positioned in the front projection of the second light shielding part on the plane of the display panel, the front projection of the second light leakage channel on the plane of the display panel is positioned in the front projection of the third light shielding part on the plane of the display panel, and the front projections of the third light leakage channel and the fourth light leakage channel on the plane of the display panel are both positioned in the front projection of the first light shielding part on the plane of the display panel.
2. The display panel according to claim 1, wherein a distance between the first light shielding layer and the second light shielding layer in a direction perpendicular to a plane in which the display panel is located is H,
the front projection of the first light shielding part on the plane of the display panel and the front projection of the second light shielding part on the plane of the display panel are provided with overlapping areas, and the length of the overlapping areas along the first direction and/or the second direction is L1,0< L1<0.577 x H;
and/or, the front projection of the first light shielding part on the plane of the display panel and the front projection of the third light shielding part on the plane of the display panel have an overlapping area, and the length of the overlapping area along the first direction and/or the second direction is L2,0< L2<0.577×h.
3. The display panel according to claim 2, wherein the H ranges between 1 μιη and 20 μιη.
4. The display panel of claim 1, wherein the display panel comprises,
the number of the first light leakage channels is at least two, and the plurality of the first light leakage channels are sequentially arranged at intervals along the second direction;
the number of the second shading parts is at least two, and the orthographic projection of each first light leakage channel on the plane of the display panel is positioned in the orthographic projection of each second shading part on the plane of the display panel.
5. The display panel of claim 4, wherein at least a portion of the second light leakage channel is located on at least one side of the first light leakage channel along the first direction.
6. The display panel of claim 5, wherein at least a portion of the second light leakage channel is located on both sides of the first light leakage channel along the first direction.
7. The display panel of claim 5, wherein the second light leakage path comprises: the first sub-channel is located at least one side of the first light leakage channels which are distributed at intervals in the second direction, and the second sub-channel is located at least one side of the first light leakage channels which are distributed at intervals in the first direction.
8. The display panel according to claim 1, wherein the display unit is capable of emitting white light and comprises a first sub-pixel, a second sub-pixel and a third sub-pixel for emitting different color light, and wherein at least part of the peripheral side of the display unit is provided with the peep-proof module.
9. The display panel according to claim 8, wherein the display units and the peep-proof modules are arranged in a one-to-one correspondence.
10. The display panel of claim 1, wherein the length of the first light leakage channel along the first direction is a, and the length of the first light leakage channel along the second direction is b, 1.ltoreq.a/b.ltoreq.100.
11. The display panel of claim 1, further comprising a first substrate and a second substrate disposed opposite to each other, wherein the first light shielding layer and the second light shielding layer are disposed on a side of the first substrate facing the second substrate,
or the first shading layer and the second shading layer are arranged on one side of the second substrate facing the first substrate.
12. A display device comprising the display panel according to any one of claims 1 to 11.
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| CN116322146B (en) * | 2023-03-22 | 2024-05-24 | 惠科股份有限公司 | Display panel and display device |
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