CN114613284B - Display panel and display device - Google Patents
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- CN114613284B CN114613284B CN202210193773.0A CN202210193773A CN114613284B CN 114613284 B CN114613284 B CN 114613284B CN 202210193773 A CN202210193773 A CN 202210193773A CN 114613284 B CN114613284 B CN 114613284B
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- 239000000758 substrate Substances 0.000 claims abstract description 101
- 208000008918 voyeurism Diseases 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 2
- 239000010410 layer Substances 0.000 description 72
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 6
- 239000004642 Polyimide Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 244000144985 peep Species 0.000 description 1
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
Abstract
The invention discloses a display panel and a display device, which relate to the technical field of display, wherein the display panel comprises: a display area comprising at least one first display area and at least one second display area; the display panel also comprises a substrate base plate and a plurality of light-emitting elements positioned at one side of the substrate base plate, wherein the light-emitting elements comprise a first light-emitting element positioned in a first display area and a second light-emitting element positioned in a second display area; the distance between the first light-emitting element and the substrate is larger than the distance between the second light-emitting element and the substrate along the direction perpendicular to the plane of the substrate; in the peep-proof mode, only the second display area is displayed; in the non-peeping mode, the first display area and the second display area are displayed. The invention can realize the peep-proof function.
Description
Technical Field
The present invention relates to the field of display technologies, and more particularly, to a display panel and a display device.
Background
With the development of display technology, display devices such as mobile phones and computers have been widely used. In general, a display device has a large viewing angle, and users at different viewing angles can know the information displayed by the display device. However, in some situations, the user may wish the information displayed by the display device to be unknown to other surrounding users, i.e., may wish the display device to have privacy functionality.
The conventional peep-proof display device generally adopts the peep-proof membrane which is additionally arranged outside the display screen, filters light rays with a large visual angle, only retains the light rays of the vertical direction and the display screen, so that a user at the position with the large visual angle cannot receive pictures displayed by the display screen, but the peep-proof display device increases the thickness of the whole display device due to the additionally arranged peep-proof membrane, and meanwhile increases the production cost of the display device.
Disclosure of Invention
In view of the above, the present invention provides a display panel and a display device, which can realize the peep-proof function.
The present invention provides a display panel, comprising: a display area comprising at least one first display area and at least one second display area; the display panel also comprises a substrate base plate and a plurality of light-emitting elements positioned at one side of the substrate base plate, wherein the light-emitting elements comprise a first light-emitting element positioned in a first display area and a second light-emitting element positioned in a second display area; the distance between the first light-emitting element and the substrate is larger than the distance between the second light-emitting element and the substrate along the direction perpendicular to the plane of the substrate; in the peep-proof mode, only the second display area is displayed; in the non-peeping mode, the first display area and the second display area are displayed.
Based on the same thought, the invention also provides a display device which comprises the display panel provided by the invention.
Compared with the prior art, the display panel and the display device provided by the invention have the advantages that at least the following effects are realized:
in the display panel provided by the invention, along the direction perpendicular to the plane of the substrate, the distance between the first light-emitting element and the substrate is larger than the distance between the second light-emitting element and the substrate, namely the thickness of the film layer between the first light-emitting element and the substrate is larger than the thickness of the film layer between the second light-emitting element and the substrate, so that for the second light-emitting element positioned in the second display area, a retaining wall structure is formed by the first light-emitting element and the part of the film layer between the first light-emitting element and the substrate, namely the first light-emitting element in the first display area and the film layer between the first light-emitting element and the substrate can shield the large-view-angle light emitted by the second light-emitting element positioned adjacent to the first light-emitting element and positioned in the second display area, thereby reducing the light quantity emitted by the large-view-angle light emitted by the second light-emitting element positioned in the second display area from the light-emitting surface of the display panel. The film layer between the first light-emitting element and the substrate in the first display area can not shield the small-view angle light and the positive-view angle light emitted by the second light-emitting element adjacent to the film layer in the second display area, so that the small-view angle light and the positive-view angle light emitted by the second light-emitting element in the second display area can be emitted from the light-emitting surface of the display panel.
The display panel provided by the invention has a peep-proof mode and a non-peep-proof mode. In the peep-proof mode, only the second display area is displayed. Since the light quantity of the large-view-angle light emitted by the second light-emitting element positioned in the second display area is smaller, the large-view-angle light emitted by the second light-emitting element positioned in the second display area tends to be emitted from the light-emitting surface of the display panel, and therefore only the small-view-angle light and the front-view-angle light in the light emitted by the second light-emitting element positioned in the second display area can be emitted from the light-emitting surface of the display panel. Therefore, when only the second display area is displayed, only the light rays with small viewing angles and the light rays with positive viewing angles in the second display area can be emitted from the light emitting surface of the display panel. Since the human eyes of the user observe the display panel in a normal viewing angle direction, the user can normally watch the display picture of the display panel. When a user at the large viewing angle position views the display panel, no large viewing angle light is emitted from the light emitting surface of the display panel, and the user at the large viewing angle position cannot view the display picture of the display panel, so that the peep-proof function is realized. In the non-peeping mode, the first display area and the second display area are both displayed, and the user can normally watch the display picture of the display panel because the human eyes of the user observe the display panel in the normal viewing angle direction. When a user at the large viewing angle position views the display panel, large viewing angle light rays of the first light emitting element in the first display area are emitted from the light emitting surface of the display panel, so that the user at the large viewing angle position can view a display picture of the display panel.
Of course, it is not necessary for any one product to practice the invention to achieve all of the technical effects described above at the same time.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic plan view of a display panel according to the present invention;
FIG. 2 is a cross-sectional view of the display panel of FIG. 1 taken along line A-A';
FIG. 3 is a cross-sectional view of the display panel of FIG. 1 taken along line B-B';
FIG. 4 is another cross-sectional view of the display panel depicted in FIG. 1, taken along line A-A';
FIG. 5 is a further cross-sectional view of the display panel depicted in FIG. 1, taken along line A-A';
FIG. 6 is a further cross-sectional view of the display panel depicted in FIG. 1, taken along line A-A';
FIG. 7 is a schematic plan view of another display panel according to the present invention;
FIG. 8 is a cross-sectional view of the display panel of FIG. 7 taken along line D-D';
FIG. 9 is a schematic plan view of a display panel according to another embodiment of the present invention;
FIG. 10 is a cross-sectional view of the display panel of FIG. 9 taken along E-E';
FIG. 11 is a schematic plan view of a display panel according to another embodiment of the present invention;
FIG. 12 is a cross-sectional view of the display panel of FIG. 11 taken along line F-F';
fig. 13 is a schematic plan view of a display device according to the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Fig. 1 is a schematic plan view of a display panel according to the present invention, and fig. 2 is a cross-sectional view of the display panel shown in fig. 1 along A-A', referring to fig. 1 and 2, the display panel includes a display area AA for displaying. The display area AA includes at least one first display area AA1 and at least one second display area AA2.
The display panel further comprises a substrate 10, which substrate 10 may be a rigid substrate or a flexible substrate. When the substrate 10 is a rigid substrate, the substrate 10 may be a glass substrate. When the substrate 10 is a flexible substrate, the substrate 10 may be a Polyimide (PI) substrate.
The display panel further includes a plurality of light emitting elements 20, and the light emitting elements 20 are located at one side of the substrate base plate 10. The light emitting element 20 includes a first light emitting element 21 and a second light emitting element 22, the first light emitting element 21 is located in the first display area AA1, and the second light emitting element 22 is located in the second display area AA2. Alternatively, the light emitting element 20 may be a micro LED (Micro Light Emitting Diode ), however, in other embodiments of the present invention, the light emitting element 20 may be other types of light emitting elements, which will not be described herein.
The distance between the first light emitting element 21 and the substrate 10 is larger than the distance between the second light emitting element 22 and the substrate 10 along the direction perpendicular to the plane of the substrate 10, that is, the thickness of the film between the first light emitting element 21 and the substrate 10 is larger than the thickness of the film between the second light emitting element 22 and the substrate 10, so that for the second light emitting element 22 located in the second display area AA2, the first light emitting element 21 and the portion of the film between the first light emitting element 21 and the substrate 10 form a retaining wall structure, that is, the film between the first light emitting element 21 and the substrate 10 in the first display area AA1 shields the large viewing angle light C1 emitted by the second light emitting element 22 located in the second display area AA2 adjacent thereto, thereby reducing the amount of the large viewing angle light C1 emitted by the second light emitting element 22 located in the second display area AA2 from the light emitting surface of the display panel. The film layer between the first light emitting element 21 and the substrate 10 in the first display area AA1 cannot block the small-view angle light C2 and the positive-view angle light C3 emitted by the second light emitting element 22 adjacent to the film layer in the second display area AA2, so that the small-view angle light C2 and the positive-view angle light C3 emitted by the second light emitting element 22 in the second display area AA2 can be emitted from the light emitting surface of the display panel.
It should be noted that, even when a portion of the large viewing angle light C1 emitted by the second light emitting element 22 located in the second display area AA2 can enter the film layer between the first light emitting element 21 and the substrate 10 in the first display area AA1 adjacent thereto, most of the light can be blocked by the first light emitting element 21, so that the amount of light emitted from the light emitting surface of the display panel by the large viewing angle light C1 emitted by the second light emitting element 22 located in the second display area AA2 is effectively reduced.
The display panel provided by the invention has a peep-proof mode and a non-peep-proof mode.
In the peep-proof mode, only the second display area AA2 is displayed. Since the amount of light emitted from the light emitting surface of the display panel by the large viewing angle light C1 emitted by the second light emitting element 22 located in the second display area AA2 is smaller, no light emitted from the light emitting surface of the display panel by the large viewing angle light C1 emitted by the second light emitting element 22 located in the second display area AA2 tends to be emitted from the light emitting surface of the display panel, and thus only the small viewing angle light C2 and the front viewing angle light C3 can be emitted from the light emitting surface of the display panel by the light emitted by the second light emitting element 22 located in the second display area AA2. Therefore, when only the second display area AA2 is displayed, only the small-angle light ray C2 and the normal-angle light ray C3 in the second display area AA2 can be emitted from the light emitting surface of the display panel. Since the human eyes of the user observe the display panel in a normal viewing angle direction, the user can normally watch the display picture of the display panel. When a user at the large viewing angle position views the display panel, no large viewing angle light ray C1 is emitted from the light emitting surface of the display panel, and the user at the large viewing angle position cannot view the display picture of the display panel, so that the peep-proof function is realized.
In the non-peeping mode, the first display area AA1 and the second display area AA2 are both displayed, and the user can normally watch the display screen of the display panel because the human eyes of the user observe the display panel in a normal viewing angle direction. When a user located at the large viewing angle position views the display panel, the large viewing angle light of the first light emitting element 21 in the first display area AA1 is emitted from the light emitting surface of the display panel, so that the user located at the large viewing angle position can view the display screen of the display panel.
It should be noted that, the positive viewing angle light refers to a light outgoing in a direction perpendicular to the light outgoing surface of the display panel, the large viewing angle light refers to a light having a larger included angle with the direction perpendicular to the light outgoing surface of the display panel, the small viewing angle light refers to a light having a smaller included angle with the direction perpendicular to the light outgoing surface of the display panel, and, in an exemplary embodiment, a light having an included angle greater than 30 ° with the direction perpendicular to the light outgoing surface of the display panel is a large viewing angle light, and a light having an included angle less than 30 ° with the direction perpendicular to the light outgoing surface of the display panel is a small viewing angle light. In the related embodiments of the present invention, the related descriptions are applicable together, and the present invention will not be described in detail.
The front view angle direction is a direction perpendicular to the light emitting surface of the display panel. In the related embodiments of the present invention, the related descriptions are applicable together, and the present invention will not be described in detail.
With continued reference to fig. 1 and 2, in some alternative embodiments, the display panel further comprises an adjustment layer 30, the adjustment layer 30 being located between the substrate 10 and the light emitting element 20 in a direction perpendicular to the plane of the substrate 10.
The thickness of the portion of the adjustment layer 30 located in the first display area AA1 is greater than the thickness of the portion of the adjustment layer 30 located in the second display area AA2 in the direction perpendicular to the plane of the substrate 10, so that a spacing between the first light emitting element 21 and the substrate 10 is greater than a spacing between the second light emitting element 22 and the substrate 10 in the direction perpendicular to the plane of the substrate 10 is achieved.
It should be noted that, the viewing angle range of the light beam emitted from the light emitting surface of the display panel by the second light emitting element 22 in the second display area AA2 can be adjusted by adjusting the thickness difference between the portion of the adjusting layer 30 located in the first display area AA1 and the portion of the adjusting layer 30 located in the second display area AA2 along the direction perpendicular to the plane of the substrate 10, so as to adjust the peep preventing angle. For example, the viewing angle of the second display area AA2 may be reduced by increasing the thickness difference between the portion of the adjustment layer 30 located in the first display area AA1 and the portion of the adjustment layer 30 located in the second display area AA2 in the direction perpendicular to the plane of the substrate base 10, thereby increasing the peep-proof angle.
Fig. 3 is a cross-sectional view of the display panel of fig. 1 along B-B', and referring to fig. 1 and 3, in some alternative embodiments, the display panel includes a circuit layer 40 and a planarization layer 50, the circuit layer 40 is located between the substrate 10 and the planarization layer 50 along a direction perpendicular to a plane of the substrate 10, the circuit layer 40 includes a plurality of transistors T, and one light emitting element 20 is electrically connected to at least one transistor T. The planarization layer 50 is located between the circuit layer 40 and the light emitting element 20, and the planarization layer 50 can be used to improve the flatness of the film layer, so as to facilitate the arrangement of the light emitting element 20.
The planarization layer 50 may be multiplexed as the adjustment layer 30, that is, by adjusting the thickness of the portion of the planarization layer 50 located in the first display area AA1 to be greater than the thickness of the portion of the planarization layer 50 located in the second display area AA2 in the direction perpendicular to the plane of the substrate 10, a spacing between the first light emitting element 21 and the substrate 10 is greater than a spacing between the second light emitting element 22 and the substrate 10 in the direction perpendicular to the plane of the substrate 10. The multiplexing planarization layer 50 is the adjustment layer 30, and a film layer is not required to be additionally added in the display panel as the adjustment layer 30, so that the thickness of the display panel is reduced, the production process is effectively simplified, and the production cost is reduced.
It should be noted that, in this embodiment, the planarization layer 50 may be multiplexed into the adjustment layer 30, and in other embodiments of the present invention, other film layers may be further multiplexed into the adjustment layer 30, which is not described herein. Of course, in other embodiments of the present invention, a film layer may be additionally added as the adjustment layer 30, and an existing film layer in the display panel is not reused as the adjustment layer 30.
With continued reference to fig. 1 and 2, in some alternative embodiments, the material of the planarization layer 50 is a light shielding material, so that when the large viewing angle light C1 emitted by the second light emitting element 22 located in the second display area AA2 is directed to the planarization layer 50 between the first light emitting element 21 and the substrate 10 in the first display area AA1 adjacent thereto, both the large viewing angle light C1 emitted by the second light emitting element 22 located in the second display area AA2 cannot be emitted from the light emitting surface of the display panel due to the shielding of the planarization layer 50 between the first light emitting element 21 and the substrate 10 in the first display area AA 1. In the peep-proof mode, only the second display area AA2 displays, the large-viewing-angle light C1 emitted by the second light emitting element 22 located in the second display area AA2 cannot be emitted from the light emitting surface of the display panel, so that the peep-proof effect is effectively improved.
Fig. 4 is another cross-sectional view of the display panel shown in fig. 1 along A-A', referring to fig. 1 and 4, in some alternative embodiments, the planarization layer 50 is multiplexed as the adjustment layer 30, that is, in a direction perpendicular to the plane of the substrate 10, by adjusting the thickness of the portion of the planarization layer 50 located in the first display area AA1 to be greater than the thickness of the portion of the planarization layer 50 located in the second display area AA2, so that the distance between the first light-emitting element 21 and the substrate 10 is greater than the distance between the second light-emitting element 22 and the substrate 10 in the direction perpendicular to the plane of the substrate 10, that is, at least one groove 51 is provided on the side of the planarization layer 50 away from the substrate 10, and the second light-emitting element 22 is located in the groove 51.
The large viewing angle light C1 emitted by the second light emitting element 22 located in the groove 51 is directed to the side wall of the groove 51, and since the side wall of the groove 51 is provided with the light shielding coating 60, the large viewing angle light C1 emitted by the second light emitting element 22 located in the groove 51 can be shielded by the light shielding coating 60, and the large viewing angle light C1 emitted by the second light emitting element 22 located in the groove 51 cannot be emitted from the light emitting surface of the display panel, that is, the large viewing angle light C1 emitted by the second light emitting element 22 located in the second display area AA2 cannot be emitted from the light emitting surface of the display panel. Therefore, in the peep-preventing mode, when only the second display area AA2 is displayed, the large-viewing-angle light C1 emitted by the second light emitting element 22 located in the second display area AA2 cannot be emitted from the light emitting surface of the display panel, so that the peep-preventing effect is effectively improved.
Fig. 5 is a further cross-sectional view of the display panel of fig. 1 along A-A', referring to fig. 1 and 5, in some alternative embodiments, the display panel further includes a dimming device 70, and the dimming device 70 is located in the second display area AA2. The dimming device 70 is arranged on one side, far away from the substrate 10, of at least one second light-emitting element 22, and the dimming device 70 can deflect the light rays emitted by the second light-emitting element 22 towards the forward viewing angle direction, namely, the dimming device 70 can adjust part of the large-viewing angle light rays emitted by the second light-emitting element 22 into small-viewing angle light rays to be emitted from the light emitting surface of the display panel, so that the display brightness is improved, the light quantity of the large-viewing angle light rays emitted by the second light-emitting element 22 is effectively reduced, and the peep-proof effect is effectively improved.
And because the light modulation device 70 can adjust part of the large-viewing-angle light emitted by the second light emitting element 22 into small-viewing-angle light to be emitted from the light emitting surface of the display panel, the light quantity of the large-viewing-angle light emitted by the second light emitting element 22 is effectively reduced, and compared with the case that the light modulation device 70 is not arranged on the side, far away from the substrate 10, of the second light emitting element 22, the thickness difference between the part of the adjusting layer 30 located in the first display area AA1 and the part of the adjusting layer 30 located in the second display area AA2 along the direction perpendicular to the plane of the substrate 10 can be reduced when the light modulation device 70 is arranged on the side, far away from the substrate 10, of the second light emitting element 22, and at this time, the peep-proof effect tends to be the same. The dimming device 70 is arranged on one side of the second light emitting element 22 away from the substrate 10, which is beneficial to reducing the thickness difference between the part of the adjusting layer 30 located in the first display area AA1 and the part of the adjusting layer 30 located in the second display area AA2 in the direction perpendicular to the plane of the substrate 10, so that the process difficulty of manufacturing the adjusting layer 30 is reduced, the process feasibility is improved, and the thickness of the display panel is reduced.
It should be noted that, in fig. 5, one dimming device 70 covers all the second light emitting elements 22 aligned along the first direction X in the second display area AA2, and in other embodiments of the present invention, referring to fig. 6, fig. 6 is a further cross-sectional view along A-A' of the display panel shown in fig. 1, and one dimming device 70 covers only one second light emitting element 22 in the second display area AA2, which is not described herein.
With continued reference to fig. 1 and fig. 5, in some alternative embodiments, the dimming device 70 includes a convex lens 71, where a side of the convex lens 71 away from the substrate 10 is in a convex structure, when light emitted by the second light emitting element 22 is directed to a surface of the convex lens 71 away from the side of the substrate 10, since the refractive index of the convex lens 71 is greater than that of a film layer (an air layer, an inorganic layer, or an organic layer, etc.) adjacent to the convex lens, the light is deflected towards the forward viewing angle direction, that is, the convex lens 71 can adjust a portion of light with a large viewing angle emitted by the second light emitting element 22 into light with a small viewing angle to be emitted from the light emitting surface of the display panel, which is favorable for improving display brightness, and effectively reduces the light quantity of light with a large viewing angle emitted by the second light emitting element 22, so as to effectively improve the peep-proof effect.
Alternatively, the material of the convex lens 71 may be a glass material having a refractive index of 1.5 or more and a curvature of 0.4 or more. Of course, in other embodiments of the present invention, other materials may be used for the material of the convex lens 71, other refractive indexes may be used for the refractive index, and other curvatures may be used for the curvature, which is not described herein.
With continued reference to fig. 1 and 2, in some alternative embodiments, the display area AA includes a plurality of first display areas AA1 and a plurality of second display areas AA2, where the first display areas AA1 are aligned along a first direction X and the second display areas AA2 are aligned along the first direction X, and the first direction X is parallel to a plane on which the substrate 10 lies.
Along the first direction X, there is a second display area AA2 between two adjacent first display areas AA 1. Therefore, for the second light emitting element 22 located in the second display area AA2, the first light emitting element 21 and the portion of the film layer between the first light emitting element 21 and the substrate 10 in the first display area AA1 located at both sides thereof form a wall structure along the first direction X, that is, the large viewing angle light C1 emitted by the second light emitting element 22 in the second display area AA2 will be blocked by the first light emitting element 21 and the film layer between the first light emitting element 21 and the substrate 10 in the first display area AA1 located at both sides thereof along the first direction X, so as to reduce the amount of light of the large viewing angle light C1 emitted by the second light emitting element 22 located in the second display area AA2 emitted from both sides of the display panel along the first direction X, thereby realizing the peep-proof function of viewing from both sides of the display panel along the first direction X.
It should be understood that, in the present invention, the first display areas AA1 are exemplarily shown to be arranged along the first direction X, the second display areas AA2 are arranged along the first direction X, and one second display area AA2 is disposed between two adjacent first display areas AA1 along the first direction X, and in other embodiments of the present invention, the first display areas AA1 may be arranged along the second direction Y, the second display areas AA2 are arranged along the second direction Y, and one second display area AA2 is disposed between two adjacent first display areas AA1 along the second direction Y, so that the peep-proof function viewed from two sides of the display panel along the second direction Y is realized.
It should be noted that, in fig. 1, the display area AA is exemplarily shown to include 3 first display areas AA1 and 2 second display areas AA2, and in other embodiments of the present invention, the display area AA may further include other numbers of first display areas AA1 and other numbers of second display areas AA2 according to actual production needs, which is not described herein in detail.
With continued reference to fig. 1, in some alternative embodiments, there is the same arrangement of light emitting elements 20 within the first display area AA1 and the second display area AA2 disposed adjacently along the first direction X. The second display area AA2 is arranged in the same manner as the light emitting elements 20 in at least one first display area AA1 adjacent thereto along the first direction X. It should be noted that the same arrangement manner of the light emitting elements 20 in the first display area AA1 and the second display area AA2 means that the light emitting elements 20 in the first display area AA1 have the same color, and for example, the light emitting elements 20 in the first display area AA1 and one of the second display areas AA2 adjacent thereto along the first direction X are all red light emitting elements, or all green light emitting elements, or all blue light emitting elements. Or, the same arrangement of the light emitting elements 20 in the first display area AA1 and the second display area AA2 means that the arrangement of the light emitting elements 20 with different colors is the same, and illustratively, the arrangement patterns of the red light emitting element, the green light emitting element, and the blue light emitting element in the first display area AA1 are the same as the arrangement patterns of the red light emitting element, the green light emitting element, and the blue light emitting element in the second display area AA2.
Along the first direction X, the arrangement modes of the light emitting elements 20 in the first display area AA1 and the second display area AA2 which are adjacently arranged are the same, and the ratio of the number of the light emitting elements 20 in the first display area AA1 to the number of the light emitting elements 20 in the second display area AA2 is 1: n or N:1, N is a positive integer. Therefore, in the peep-preventing mode, only the second display area AA2 displays, the light emitting elements 20 in the second display area AA2 can display the pictures displayed in the first display area AA and the second display area AA2 in the non-peep-preventing mode by controlling, that is, in the peep-preventing mode, only the second display area AA2 displays, the light emitting elements 20 in the second display area AA2 can normally display the pictures by controlling.
With continued reference to fig. 1, in some alternative embodiments, the at least one first display area AA1 includes three columns of first light-emitting elements 21 arranged along the second direction Y, wherein the first direction X and the second direction Y intersect. Optionally, the first direction X and the second direction Y are perpendicular.
The at least one second display area AA2 includes three columns of second light-emitting elements 22 arranged in the second direction Y.
Specifically, the display panel includes a plurality of light emitting element groups, one light emitting element group includes three light emitting elements 20 arranged along the first direction X, wherein the three light emitting elements 20 are respectively a red light emitting element, a green light emitting element, and a blue light emitting element, and the arrangement modes of the red light emitting element, the green light emitting element, and the blue light emitting element in each light emitting element group are the same. The first display area AA1 includes three columns of first light emitting elements 21 arranged along the second direction Y, the three columns of first light emitting elements 21 arranged along the second direction Y in the first display area AA1 are respectively a column of red light emitting elements, a column of green light emitting elements and a column of blue light emitting elements, that is, the first display area AA1 includes a column of light emitting element groups arranged along the second direction Y, at this time, the second display area AA2 includes three columns of second light emitting elements 22 arranged along the second direction Y, the three columns of second light emitting elements 22 arranged along the second direction Y in the second display area AA2 are respectively a column of red light emitting elements, a column of green light emitting elements and a column of blue light emitting elements, that is, the second display area AA2 also includes a column of light emitting element groups arranged along the second direction Y. Therefore, in the peep-preventing mode, only the second display area AA2 displays, the light emitting elements 20 in the second display area AA2 can display the pictures displayed in the first display area AA and the second display area AA2 in the non-peep-preventing mode by controlling, that is, in the peep-preventing mode, only the second display area AA2 displays, the light emitting elements 20 in the second display area AA2 can normally display the pictures by controlling.
It should be noted that, in this embodiment, the first display area AA1 is exemplarily shown to include a row of light emitting element groups arranged along the second direction Y, and the second display area AA2 also includes a row of light emitting element groups arranged along the second direction Y, however, in other embodiments of the present invention, the ratio of the light emitting element groups in the first display area AA1 to the light emitting element groups in the second display area AA2 may be 1: m or M:1, M is a positive integer, and the invention is not described in detail herein.
Fig. 7 is a schematic plan view of another display panel according to the present invention, and fig. 8 is a cross-sectional view along D-D' of the display panel shown in fig. 7, and referring to fig. 7 and 8, in some alternative embodiments, at least one first display area AA1 includes a row of first light-emitting elements 21 arranged along a second direction Y, and at least one second display area AA2 includes a row of second light-emitting elements 22 arranged along the second direction Y, where the first direction X and the second direction Y intersect. Optionally, the first direction X and the second direction Y are perpendicular.
The first display area AA1 and one second display area AA2 adjacent to the first display area along the first direction X each include a row of light emitting elements 20 arranged along the second direction Y, and the colors of the light emitting elements 20 in the first display area AA1 and one second display area AA2 adjacent to the first display area along the first direction X are the same, so that when the second display area AA2 is only displayed in the peep-proof mode, the light emitting elements 20 in the second display area AA2 can display pictures displayed in the first display area AA and the second display area AA2 in the non-peep-proof mode, namely, when the second display area AA2 is only displayed in the peep-proof mode, the light emitting elements 20 in the second display area AA2 can normally display pictures by controlling.
For the second light emitting element 22 located in the second display area AA2, along the first direction X, the first light emitting element 21 in the first display area AA1 located at both sides thereof and the portion of the film layer between the first light emitting element 21 and the substrate 10 form a wall structure, that is, the large viewing angle light C1 emitted by the second light emitting element 22 in the second display area AA2 is blocked by the first light emitting element 21 in the first display area AA1 located at both sides thereof and the film layer between the first light emitting element 21 and the substrate 10 along the first direction X, so as to reduce the amount of light of the large viewing angle light C1 emitted by the second light emitting element 22 located in the second display area AA2 emitted from both sides of the display panel along the first direction X, thereby realizing the peep-proof function of viewing from both sides of the display panel along the first direction X. The difference in height between the first light emitting element 21 in the first display area AA1 and the second light emitting element 22 in the second display area AA2 is proportional to the width of the second display area AA2 in the first direction X along the direction perpendicular to the plane of the substrate 10, that is, the greater the width of the second display area AA2 in the first direction X, the greater the difference in height between the first light emitting element 21 in the first display area AA1 and the second light emitting element 22 in the second display area AA2 along the direction perpendicular to the plane of the substrate 10 should be. The second display area AA2 only includes a row of second light emitting elements 22 arranged along the second direction Y, so that the width of the second display area AA2 in the first direction X is effectively reduced, and thus, the height difference between the first light emitting element 21 in the first display area AA1 and the second light emitting element 22 in the second display area AA2 in the direction perpendicular to the plane of the substrate 10 is effectively reduced, thereby being beneficial to reducing the difficulty of manufacturing the adjustment layer 30, improving the process feasibility, and reducing the thickness of the display panel.
It should be noted that, in the present embodiment, the second display area AA2 is exemplarily shown to include a row of the second light emitting elements 22 arranged along the second direction Y, and the first display area AA1 also includes a row of the first light emitting elements 21 arranged along the second direction Y. In other embodiments of the present invention, referring to fig. 9 and 10, fig. 9 is a schematic plan view of yet another display panel provided by the present invention, and fig. 10 is a cross-sectional view of the display panel shown in fig. 9 along the line E-E', at least one first display area AA1 includes two columns of first light-emitting elements 21 arranged along the second direction Y, and at least one second display area AA2 includes one column of second light-emitting elements 22 arranged along the second direction Y. Wherein the first direction X and the second direction Y intersect. Optionally, the first direction X and the second direction Y are perpendicular. Of course, in other embodiments of the present invention, when the second display area AA2 includes a row of second light emitting elements 22 arranged along the second direction Y, the first display area AA1 may also include other numbers of first light emitting elements 21 arranged along the second direction Y, which is not described herein again.
With continued reference to fig. 7 and 8, in some alternative embodiments, the first light emitting element 21 is the same size as the second light emitting element 22, i.e., the first light emitting element 21 and the second light emitting element 22 may be the same light emitting element 20, where the naming of the first light emitting element 21 and the second light emitting element 22 is used only to distinguish between the light emitting elements 20 located in the first display area AA1 and the second display area AA2.
The size of the first light emitting element 21 is the same as the size of the second light emitting element 22, so that the light emitting element 20 in the display panel is conveniently arranged, the process is effectively reduced, and the production cost is reduced.
Fig. 11 is a schematic plan view of another display panel according to the present invention, and fig. 12 is a cross-sectional view of the display panel shown in fig. 11 along F-F', and referring to fig. 11 and 12, in some alternative embodiments, a length of the second light emitting element 22 along the first direction X is smaller than a length of the first light emitting element 21 along the first direction X.
Specifically, for the second light emitting element 22 located in the second display area AA2, along the first direction X, the first light emitting element 21 in the first display area AA1 located at both sides thereof and the portion of the film layer between the first light emitting element 21 and the substrate 10 form a retaining wall structure, that is, the large viewing angle light C1 emitted by the second light emitting element 22 in the second display area AA2 is blocked by the film layer between the first light emitting element 21 and the first light emitting element 21 in the first display area AA1 located at both sides thereof along the first direction X, so as to reduce the amount of light of the large viewing angle light C1 emitted by the second light emitting element 22 located in the second display area AA2 that is emitted from both sides of the display panel along the first direction X, thereby realizing the peep-proof function of viewing from both sides of the display panel along the first direction X. The length of the second light emitting element 22 along the first direction X is smaller than the length of the first light emitting element 21 along the first direction X, that is, by reducing the length of the second light emitting element 22 along the first direction X, the width of the second display area AA2 along the first direction X is effectively reduced, so that the height difference between the first light emitting element 21 and the second light emitting element 22 in the first display area AA1 and the second display area AA2 along the direction perpendicular to the plane of the substrate 10 is effectively reduced, thereby being beneficial to reducing the process difficulty of manufacturing the adjustment layer 30, improving the process feasibility, and being beneficial to reducing the thickness of the display panel.
In some alternative embodiments, please refer to fig. 13, fig. 13 is a schematic plan view of a display device according to the present invention, and a display device 1000 according to the present embodiment includes a display panel 100 according to the above embodiment of the present invention. The embodiment of fig. 13 is only an example of a mobile phone, and the display device 1000 is described, and it is to be understood that the display device 1000 provided in the embodiment of the present invention may be any other display device 1000 having a display function, such as a computer, a television, a vehicle-mounted display device, etc., which is not particularly limited in this respect. The display device 1000 provided in the embodiment of the present invention has the beneficial effects of the display panel 100 provided in the embodiment of the present invention, and the specific description of the display panel 100 in the above embodiments may be referred to in the embodiments, and the description of the embodiment is omitted herein.
As can be seen from the above embodiments, the display panel and the display device provided by the present invention at least achieve the following beneficial effects:
in the display panel provided by the invention, along the direction perpendicular to the plane of the substrate, the distance between the first light-emitting element and the substrate is larger than the distance between the second light-emitting element and the substrate, namely the thickness of the film layer between the first light-emitting element and the substrate is larger than the thickness of the film layer between the second light-emitting element and the substrate, so that for the second light-emitting element positioned in the second display area, a retaining wall structure is formed by the first light-emitting element and the part of the film layer between the first light-emitting element and the substrate, namely the first light-emitting element in the first display area and the film layer between the first light-emitting element and the substrate can shield the large-view-angle light emitted by the second light-emitting element positioned adjacent to the first light-emitting element and positioned in the second display area, thereby reducing the light quantity emitted by the large-view-angle light emitted by the second light-emitting element positioned in the second display area from the light-emitting surface of the display panel. The film layer between the first light-emitting element and the substrate in the first display area can not shield the small-view angle light and the positive-view angle light emitted by the second light-emitting element adjacent to the film layer in the second display area, so that the small-view angle light and the positive-view angle light emitted by the second light-emitting element in the second display area can be emitted from the light-emitting surface of the display panel.
The display panel provided by the invention has a peep-proof mode and a non-peep-proof mode. In the peep-proof mode, only the second display area is displayed. Since the light quantity of the large-view-angle light emitted by the second light-emitting element positioned in the second display area is smaller, the large-view-angle light emitted by the second light-emitting element positioned in the second display area tends to be emitted from the light-emitting surface of the display panel, and therefore only the small-view-angle light and the front-view-angle light in the light emitted by the second light-emitting element positioned in the second display area can be emitted from the light-emitting surface of the display panel. Therefore, when only the second display area is displayed, only the light rays with small viewing angles and the light rays with positive viewing angles in the second display area can be emitted from the light emitting surface of the display panel. Since the human eyes of the user observe the display panel in a normal viewing angle direction, the user can normally watch the display picture of the display panel. When a user at the large viewing angle position views the display panel, no large viewing angle light is emitted from the light emitting surface of the display panel, and the user at the large viewing angle position cannot view the display picture of the display panel, so that the peep-proof function is realized. In the non-peeping mode, the first display area and the second display area are both displayed, and the user can normally watch the display picture of the display panel because the human eyes of the user observe the display panel in the normal viewing angle direction. When a user at the large viewing angle position views the display panel, large viewing angle light rays of the first light emitting element in the first display area are emitted from the light emitting surface of the display panel, so that the user at the large viewing angle position can view a display picture of the display panel.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (14)
1. A display panel, comprising: a display area comprising at least one first display area and at least one second display area;
the display panel further comprises a substrate base plate and a plurality of light-emitting elements positioned at one side of the substrate base plate, wherein the light-emitting elements comprise a first light-emitting element positioned in the first display area and a second light-emitting element positioned in the second display area;
the distance between the first light-emitting element and the substrate is larger than the distance between the second light-emitting element and the substrate along the direction perpendicular to the plane of the substrate;
in the peep-proof mode, only the second display area is displayed;
in a non-peeping mode, the first display area and the second display area are displayed;
the display panel further comprises an adjusting layer, wherein the adjusting layer is positioned between the substrate and the light-emitting element along the direction perpendicular to the plane of the substrate;
the display panel comprises a circuit layer and a planarization layer, wherein the circuit layer is positioned between the substrate base plate and the planarization layer along the direction perpendicular to the plane of the substrate base plate, and the planarization layer is positioned between the circuit layer and the light-emitting element; the planarization layer is multiplexed as the adjustment layer.
2. The display panel of claim 1, wherein the display panel comprises,
and the thickness of the part of the regulating layer, which is positioned in the first display area, is larger than that of the part of the regulating layer, which is positioned in the second display area, along the direction perpendicular to the plane of the substrate.
3. The display panel of claim 1, wherein the display panel comprises,
the material of the planarization layer is a shading material.
4. The display panel of claim 1, wherein the display panel comprises,
at least one groove is formed in one side, far away from the substrate, of the planarization layer, and the second light-emitting element is located in the groove;
the side wall of the groove is provided with a shading coating.
5. The display panel of claim 1, wherein the display panel comprises,
the display panel also comprises a dimming device, and the dimming device is positioned in the second display area;
the dimming device is arranged on one side, away from the substrate, of at least one second light-emitting element.
6. The display panel of claim 5, wherein the display panel comprises,
the light adjusting device comprises a convex lens, and one side, far away from the substrate, of the convex lens is in a convex structure.
7. The display panel of claim 1, wherein the display panel comprises,
the display area comprises a plurality of first display areas and a plurality of second display areas, the first display areas are arranged along a first direction, the second display areas are arranged along the first direction, and the first direction is parallel to a plane where the substrate base plate is located;
along the first direction, one second display area is arranged between two adjacent first display areas.
8. The display panel of claim 7, wherein the display panel comprises,
the arrangement modes of the light-emitting elements in the first display area and the second display area which are adjacently arranged along the first direction are the same;
the ratio of the number of light emitting elements in the first display area to the number of light emitting elements in the second display area is 1: n or N:1, N is a positive integer.
9. The display panel of claim 8, wherein the display panel comprises,
at least one of the first display regions includes three columns of the first light emitting elements arranged in a second direction, wherein the first direction and the second direction intersect;
at least one of the second display regions includes three columns of the second light emitting elements arranged in the second direction.
10. The display panel of claim 8, wherein the display panel comprises,
at least one of the first display regions includes a row of the first light emitting elements arranged along a second direction, wherein the first direction and the second direction intersect;
at least one of the second display regions includes a row of the second light emitting elements arranged along the second direction.
11. The display panel of claim 10, wherein the display panel comprises,
the length of the second light emitting element along the first direction is smaller than the length of the first light emitting element along the first direction.
12. The display panel of claim 8, wherein the display panel comprises,
at least one first display area comprises two rows of first light-emitting elements arranged along a second direction, wherein the first direction and the second direction intersect;
at least one of the second display regions includes a row of the second light emitting elements arranged along the second direction.
13. The display panel of claim 8, wherein the display panel comprises,
the first light emitting element has the same size as the second light emitting element.
14. A display device, characterized in that the display device comprises a display panel according to any one of claims 1-13.
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