CN111899646B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN111899646B CN111899646B CN202010807398.5A CN202010807398A CN111899646B CN 111899646 B CN111899646 B CN 111899646B CN 202010807398 A CN202010807398 A CN 202010807398A CN 111899646 B CN111899646 B CN 111899646B
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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
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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 embodiment of the invention discloses a display panel and a display device, wherein the display panel comprises: at least one vector pixel unit; the vector pixel unit comprises vector pixels and a reflecting component, wherein the reflecting component is at least used for reflecting light beams emitted by the vector pixels; the view angle formed by the light beams emitted by the vector pixel units is an expanded view angle, the view angle formed by the light beams emitted by the vector pixels is an original view angle, and the expanded view angle is larger than the original view angle. According to the scheme, the reflection assembly is configured for the vector pixels, and the direction of the light beam emitted by the vector pixels is changed by using the reflection assembly, so that the visual angle formed by the exiting light beam of the existing vector pixels is expanded, and the display panel can meet the requirement of a user for watching at a large angle.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel and a display device.
Background
The vector pixel is an optical device, and is widely used in a display device, and the display of a picture can be realized by controlling the light emission luminance and the gray scale of the vector pixel.
The vector pixels can project narrow beams in a plurality of distinguishable directions, but the spatial distribution angle of the emergent beams of the vector pixels is mostly less than 150 degrees at present, and the requirement of a user for viewing a display screen at a large angle (close to 180 degrees) is not met.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, wherein the display panel can meet the requirement of a user for watching at a large angle.
In a first aspect, an embodiment of the present invention provides a display panel, including: at least one vector pixel unit; the vector pixel unit comprises vector pixels and a reflecting component, wherein the reflecting component is at least used for reflecting light beams emitted by the vector pixels;
the view angle formed by the light beams emitted by the vector pixel units is an expanded view angle, the view angle formed by the light beams emitted by the vector pixels is an original view angle, and the expanded view angle is larger than the original view angle.
Optionally, the reflective assembly comprises a mirror assembly;
the vector pixels comprise dense display devices and optical components; the dense display device comprises at least two light-emitting elements, wherein the at least two light-emitting elements comprise a first light-emitting element and a second light-emitting element, light beams emitted by the first light-emitting element are emitted by the optical assembly to form a first original light beam, and light beams emitted by the second light-emitting element are emitted by the optical assembly to form a second original light beam; the first original light beam and the second original light beam form an original visual angle;
the light beam emitted by the first light emitting element is emitted through the optical component and the reflector component to form a first expanded light beam, and the light beam emitted by the second light emitting element is emitted through the optical component and the reflector component to form a second expanded light beam; any two light beams of the first original light beam, the second original light beam, the first expanded light beam and the second expanded light beam form a plurality of first visual angles, and the maximum value of the plurality of first visual angles is the expanded visual angle.
Optionally, the mirror assembly comprises at least one first mirror;
at least one first reflector is arranged between the dense display device and the optical assembly, and the reflecting surface of the first reflector is intersected with the bottom surface of the dense display device; the light beam emitted by the first light-emitting element is reflected by the first reflector and then emitted by the optical component to form a first expanded light beam; the light beam emitted by the second light-emitting element is reflected by the first reflector and then emitted by the optical component to form a second expanded light beam.
Optionally, the at least two light emitting elements comprise a plurality of light emitting elements, the plurality of light emitting elements forming a light emitting element array;
at least one first reflector is disposed around the array of light emitting elements, and a reflective surface of the first reflector is perpendicular to a bottom surface of the dense display device.
Optionally, the mirror assembly includes a hollow frustum, the hollow frustum includes a first opening, a second opening, and a frustum sidewall connecting the first opening and the second opening, the frustum sidewall includes a first surface and a second surface which are oppositely disposed, and a third surface and a fourth surface which are oppositely disposed, the first surface and the first opening are located on the same plane, the second surface and the second opening are located on the same plane, the third surface is a surface of the frustum sidewall close to one side of the first opening and the second opening, the fourth surface is a surface of the frustum sidewall far away from one side of the first opening and one side of the second opening, the first surface, the second surface and the third surface are provided with light absorbing films, and the fourth surface is provided with a second mirror;
the hollow frustum is arranged on the light-emitting surface of the vector pixel, the second opening is positioned on one side of the first opening, which is far away from the light-emitting surface, and the vertical projection of the second opening on the light-emitting surface covers the vertical projection of the first opening on the light-emitting surface;
the light beam emitted by the first light-emitting element is emitted by the optical component and then reflected by the second reflector to form a first expanded light beam; the light beam emitted by the second light-emitting element is emitted by the optical component and reflected by the second reflector to form a second expanded light beam.
Optionally, the first opening and the second opening are arranged in parallel, and a distance between the first opening and the second opening is a first preset distance; a first preset included angle is formed between the side wall of the frustum and the light-emitting surface of the vector pixel.
Optionally, the reflective component comprises a transflective component;
the visual angle formed by the outgoing light beams after the light beams emitted by the vector pixels are reflected by the semi-transparent and semi-reflective component is a reflection visual angle, and the visual angle formed by the outgoing light beams after the light beams emitted by the vector pixels are transmitted by the semi-transparent and semi-reflective component is an original visual angle;
the reflection visual angle is overlapped with the original visual angle, and the expanded visual angle is the sum of the original visual angle and the reflection visual angle.
Optionally, the transflective assembly includes a first transflective mirror;
the first half-transmitting half-reflecting mirror is arranged on the light-emitting side of the vector pixel, covers the light beam emitted by the vector pixel within the original visual angle, and the reflecting surface of the first half-transmitting half-reflecting mirror is intersected with the light-emitting surface of the vector pixel.
Optionally, the display panel is a transparent display panel, and the display panel further includes a display superposition component, where the display superposition component includes a third reflector and a second semi-transparent and semi-reflective mirror;
the third reflector is arranged on the non-display side of the display panel, and the reflecting surface of the third reflector is parallel to the display surface of the display panel;
the second semi-transparent and semi-reflective mirror is arranged on the display side of the display panel, and a second preset distance is formed between the reflecting surface of the second semi-transparent and semi-reflective mirror and the display surface of the display panel, and a second preset included angle is formed between the reflecting surface of the second semi-transparent and semi-reflective mirror and the display surface of the display panel.
In a second aspect, an embodiment of the present invention further provides a display device, including the display panel provided in any one of the above aspects.
According to the embodiment of the invention, the reflecting assembly is configured for the vector pixel to form the vector pixel unit, and the reflecting assembly is utilized to change the direction of the light beam emitted by the vector pixel unit, so that the expanded visual angle formed by the light beam emitted by the vector pixel unit is larger than the original visual angle formed by the light beam emitted by the vector pixel unit, and thus the space distribution angle of the exiting light beam of the existing vector pixel is expanded, and the display panel can meet the requirement of a user for large-angle viewing.
Drawings
FIG. 1 is a schematic view of the light emission of a vector pixel;
FIG. 2 is a schematic diagram of a vector pixel unit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the operation of the vector pixel cell of FIG. 2;
FIG. 4 is a schematic diagram of a vector pixel unit according to another embodiment of the present invention;
FIGS. 5-7 are schematic diagrams of the operation of the vector pixel cell of FIG. 4;
FIG. 8 is a schematic structural diagram of a vector pixel unit according to another embodiment of the present invention and a schematic operational diagram thereof;
fig. 9 is a schematic diagram of a structure of a display panel and a multi-layer display effect thereof according to still another embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The display panel according to the embodiment of the present invention, particularly to a vector pixel display panel, generally includes at least one vector pixel, and can display a picture by controlling the luminance and the gray scale of the vector pixel. Before describing the technical solution of the embodiment of the present invention, the following description is first made for vector pixels.
Fig. 1 is a schematic view of the light emission of a vector pixel. Referring to fig. 1, a vector pixel 100 is an optical device satisfying a predetermined condition. The preset condition may be: first, vector sub-pixel narrow beams, that is, with respect to a larger display area, vector pixel 100 can be viewed approximately as being made up of light sources (vector sub-pixels) that emit light one by one, each of which can emit a narrow beam into space; the light beams emitted to the space by the vector sub-pixels have the following characteristics: the light beams emitted by the vector sub-pixels can be understood as cones (see fig. 1) with the light source as the center; if the light beam boundary is at a light intensity falling to fifty percent of the light beam, the minimum spatial spherical angle that can encompass all boundaries, centered at the light source, is less than 10, typically only 1; second, the vector pixels 100 can project in multiple distinguishable directions, in other words, the direction of the light beam exiting each vector sub-pixel is different (see fig. 1); thirdly, the vector pixels 100 can emit light beams in two or more directions simultaneously, that is, there may be two or more vector sub-pixels in the vector pixels 100 working simultaneously, and the working condition of each vector sub-pixel can be controlled individually; fourth, the brightness of the light beam emitted by the vector pixels 100 can be adjusted, i.e., the brightness of the light beam emitted by each vector sub-pixel in a vector pixel 100 can be adjusted. In short, the vector pixel 100 is composed of at least two vector sub-pixels, and each vector sub-pixel emits a light beam having a certain directivity. A display device that emits light by vector pixels typically includes a human eye tracking module, from which the position of the user's eye is first determined, and then the vector sub-pixels that need to be illuminated, whose light beams are directed towards the position of the human eye.
Illustratively, in any embodiment of the invention, the vector pixels are formed by a dense array of display devices and optical components. The dense display device is composed of at least two light-emitting elements, each light-emitting element can be called a vector sub-pixel, and light emitted by each vector sub-pixel can form a light beam pointing to a specific direction in space after being modulated by the optical assembly.
It should be noted that the vector pixel may also be implemented in other ways, which is not limited in the embodiment of the present invention, and all schemes that extend the viewing angle of the vector pixel by using the following schemes are within the protection scope of the present invention.
Specifically, in the embodiment of the present invention, the viewing angle of the vector pixel is expanded by adding the reflection element, and a combination of the vector pixel and the reflection element is referred to as a vector pixel unit. Illustratively, the display panel includes at least one vector pixel cell. Fig. 2 is a schematic structural diagram of a vector pixel unit according to an embodiment of the present invention, and referring to fig. 2, the vector pixel unit 10 includes vector pixels (such as the dense display device 110 and the optical component 120 shown in fig. 2) and a reflective component (such as the first mirror 210 shown in fig. 2), the reflective component at least being used for reflecting light beams emitted by the vector pixels; the viewing angle formed by the light beams emitted by the vector pixel unit 10 is an expanded viewing angle (such as ^ OB "), the viewing angle formed by the light beams emitted by the vector pixel is an original viewing angle (such as ^ OB'), and the expanded viewing angle is larger than the original viewing angle.
It should be noted that the structure of the vector pixel unit 10 shown in fig. 2 is only the structure of the vector pixel unit 10 provided in one embodiment of the present invention, and is used to exemplarily show the constituent components of the vector pixel unit 10, and the structure is not limited thereto.
The reflection assembly can have other functions besides reflecting the light beams emitted by the vector pixels, for example, can transmit a part of the light beams emitted by the vector pixels. The embodiment of the invention mainly utilizes the reflection function of the reflection assembly to change the direction of the light beams emitted by the vector pixels so as to expand the visual angle formed by the light beams emitted by the vector pixels, so that the display panel can meet the requirement of a user for viewing at a large angle.
As can be seen from the above, the vector pixels can emit light beams pointing in multiple directions in space, and therefore, the viewing angle formed by the light beams emitted by the vector pixels is the maximum spatial distribution angle of the light beams emitted by the vector pixels, which can be seen by human eyes. Wherein, the original view angle represents the maximum spatial distribution angle of the light beams emitted by the vector pixels when the reflection component is not arranged. The expanded view angle represents the maximum spatial distribution angle of the light beam emitted by the vector pixel unit (the vector pixel after the reflection component is arranged to change the direction of the light beam). As can be seen from fig. 2, after the exit direction of the light beam is changed by the reflection assembly, the expanded viewing angle of the light beam emitted by the vector pixel is larger than the original viewing angle. The type of reflective element, its location and mechanism of action will be described in detail later and will not be described in detail.
With the arrangement, when the display device determines that the included angle between the position of the human eye and the normal line of the light-emitting surface of the display panel is a large angle (for example, nearly 90 degrees) according to the human eye tracking module, the appropriate vector sub-pixel can be selected to emit light, and the light beam emitted by the vector sub-pixel can be directed to the human eye after passing through the optical assembly and the reflection assembly, so that the illuminated sub-pixel can be observed by the human eye, and the requirement of a user for large-angle observation is met.
According to the embodiment of the invention, the reflecting assembly is configured for the vector pixel to form the vector pixel unit, and the reflecting assembly is utilized to change the direction of the light beam emitted by the vector pixel unit, so that the expanded visual angle formed by the light beam emitted by the vector pixel unit is larger than the original visual angle formed by the light beam emitted by the vector pixel unit, and thus the maximum spatial distribution angle of the exiting light beam of the existing vector pixel is expanded, and the display panel can meet the requirement of a user for large-angle viewing.
On the basis of the above-described embodiments, the following describes the structure of 3 kinds of vector pixel units 10, and explains in detail the mechanism of extending the viewing angle of the light beams emitted by the vector pixels.
First, optionally, the reflective assembly comprises a mirror assembly, i.e. the reflective assembly is only reflective. Fig. 4 is a schematic structural diagram of a vector pixel unit according to another embodiment of the present invention, and fig. 2 and fig. 4 respectively show two implementations when the reflective component is a reflective mirror component. Accordingly, fig. 3 is a schematic diagram of the operation principle of the vector pixel unit shown in fig. 2, and fig. 5-7 are schematic diagrams of the operation principle of the vector pixel unit shown in fig. 4. First, the structure and the operation mechanism of the first vector pixel unit will be described with reference to fig. 2 and 3.
Referring to fig. 3, the vector pixels include a dense display device 110 and an optical assembly 120; the dense display device 110 includes at least two light emitting elements, the at least two light emitting elements include a first light emitting element 111 and a second light emitting element 112, a light beam emitted from the first light emitting element 111 is emitted through the optical assembly 120 to form a first original light beam (e.g., AA '), and a light beam emitted from the second light emitting element 112 is emitted through the optical assembly 120 to form a second original light beam (e.g., BB'); the first original light beam and the second original light beam form an original visual angle (such as & lt A 'OB'); the light beam emitted by the first light emitting element 111 is emitted through the optical assembly 120 and the mirror assembly (e.g., the first mirror 210) to form a first expanded light beam (e.g., ACA "), and the light beam emitted by the second light emitting element 112 is emitted through the optical assembly 120 and the mirror assembly (e.g., the first mirror 210) to form a second expanded light beam (e.g., BDB"); any two of the first original light beam (e.g., AA '), the second original light beam (e.g., BB '), the first expanded light beam (e.g., CA "), and the second expanded light beam (e.g., DB") form a plurality of first viewing angles, and a maximum value of the plurality of first viewing angles is an expanded viewing angle (e.g., < B ' OB ").
The dense display device includes at least two light emitting elements, and here, the first light emitting element 111 and the second light emitting element 112 represent two light emitting elements with the largest spatial pointing angle of the outgoing light beam among all the light emitting elements, where the spatial pointing angle of the light beam can be understood as an included angle between the light beam and a perpendicular line of the light outgoing surface. In this way, the angle of view formed by the first original light beam (AA ') emitted from the first light emitting element 111 and the second original light beam (BB') emitted from the second light emitting element 112, i.e., the maximum spatial distribution angle of the light beams emitted from the vector pixels, i.e., the original angle of view. Since the light beams emitted by other light emitting elements in the dense display device are all within the original viewing angle, the viewing angle expansion mechanism of the vector pixel will be described herein by taking only the first light emitting element 111 and the second light emitting element 112 as an example.
Specifically, in the configuration shown in fig. 3, the mirror assembly includes at least one first mirror 210; at least one first mirror 210 is disposed between the dense display device 110 and the optical assembly 120, and a reflective surface of the first mirror 210 intersects a bottom surface of the dense display device 110; the light beam emitted by the first light emitting element 111 is reflected by the first reflecting mirror 210, and then is emitted by the optical component 120 to form a first expanded light beam (ACA "); the light beam emitted from the second light emitting element 112 is reflected by the first reflecting mirror 210, and then emitted through the optical assembly 120 to form a second expanded light beam (BDB ").
In this embodiment, the first reflector 210 is disposed between the dense display and the optical assembly 120 for reflecting the light emitted from the light emitting device. Fig. 3 is only illustrated by an example in which one mirror assembly comprises one first mirror. It can be understood that, since the light emitted from the light emitting element (e.g., a light emitting diode) is divergent, a part of the light beam emitted from the light emitting element directly exits through the optical assembly 120 to form an original light beam; another part of the light beam emitted by the light emitting element first irradiates the first reflecting mirror 210, is reflected by the first reflecting mirror 210, and then is emitted through the optical component 120 to form an expanded light beam. For example, the light beam emitted from the first light emitting element 111 is reflected by the first reflecting mirror 210, and then emitted by the optical assembly 120 to form a first expanded light beam (ACA "), and the light beam emitted from the second light emitting element 112 is reflected by the first reflecting mirror 210, and then emitted by the optical assembly 120 to form a second expanded light beam (BDB"). As can be seen from fig. 3, the expanded viewing angle ([ B ] OB ') formed by the light beams emitted by the vector pixel unit 10 is larger than the original viewing angle ([ a ] OB') formed by the light beams emitted by the vector pixels, and the maximum spatial distribution angle of the light beams emitted by the vector pixels is expanded.
Further, referring to fig. 2, optionally, the at least two light emitting elements comprise a plurality of light emitting elements forming a light emitting element array (not shown in fig. 2); at least one first reflecting mirror 210 is disposed around the light emitting element array, and a reflecting surface of the first reflecting mirror 210 is perpendicular to a bottom surface of the dense display device 110.
Illustratively, the shape of the array of light-emitting elements can be any polygon, such as a rectangle. Alternatively, the mirror assembly may include a plurality of first mirrors 210, the plurality of first mirrors 210 being disposed around the light emitting element array, and a side length of each first mirror 210 being equal to a side length of a corresponding side in the light emitting element array. Taking a rectangular light emitting element array as an example, by arranging the first reflector 210 around the light emitting element array, light emitted by the light emitting element can be reflected by the 4-sided first reflector 210 at the same time, and the reflected light beam can form 4 first light beams pointing to different directions after being emitted by the optical assembly 120, so as to form a three-dimensional light beam, thereby meeting the requirement of a user to view from any position at a large angle (an included angle between the user and a normal line of the display panel). The reflective surface of the first reflector 210 is perpendicular to the bottom surface of the dense display device 110, which makes the process simpler and facilitates the design of the final light beam emitting direction of each light emitting element.
It should be noted that, although the light emitting element emits 5 light beams (4 expanded light beams and 1 original light beam) from the lens after the first reflecting mirror 210 is added, since the divergence angle of the vector sub-pixel emitted light beam is only about 1 ° of the plane angle, the probability that the emitted light beam (non-target light beam) at the non-user viewing position will generate visual interference is very small and negligible.
The structure and the operation mechanism of the second vector pixel unit will be described with reference to fig. 4-7. Referring to fig. 4, optionally, the mirror assembly includes a hollow frustum 220, the hollow frustum 220 includes a first opening 221, a second opening 222 and a frustum sidewall 223 connecting the first opening 221 and the second opening 222, the frustum sidewall 223 includes a first surface and a second surface which are oppositely disposed, and a third surface and a fourth surface which are oppositely disposed, the first surface and the first opening are located on the same plane, the second surface and the second opening are located on the same plane, the third surface is a surface of the frustum sidewall close to one side of the first opening and the second opening, the fourth surface is a surface of the frustum sidewall far away from one side of the first opening and the second opening, the first surface, the second surface and the third surface are provided with light absorbing films, and the fourth surface is provided with a second mirror; the hollow frustum 220 is disposed on the light-emitting surface of the vector pixel, the second opening 222 is located on a side of the first opening 221 away from the light-emitting surface, and a vertical projection of the second opening 222 on the light-emitting surface covers a vertical projection of the first opening 221 on the light-emitting surface; the light beam emitted by the first light emitting element is emitted through the optical component 120, and then reflected by the second reflecting mirror to form a first expanded light beam (not shown); the light beam emitted by the second light emitting element is emitted through the optical assembly and reflected by the second reflector to form a second expanded light beam (not shown).
The difference from the previous embodiment is that the second reflecting mirror reflects the light emitted after being modulated by the optical assembly 120 in the present embodiment, and the first reflecting mirror 210 directly reflects the light emitted by the light emitting device in the previous embodiment and then emits the light through the optical assembly 120.
As mentioned above, the light beam modulated by the optical assembly 120 is directed to a specific direction, which can be regarded as a nearly parallel light beam, and the spatial direction angles of the light beams emitted by different light emitting devices are different after being modulated by the optical assembly. Here, fig. 5 to 7 illustrate a mechanism in which the spatial pointing angle of the light beam is expanded, taking as an example the outgoing light beam having different spatial pointing angles. It should be noted that fig. 5-7 only show schematic optical paths of the light beams emitted by the light emitting elements after the light beams exit through the optical assembly 120. As can be seen from fig. 5-7, the light beam emitted from the light-emitting surface of the optical assembly 120 is reflected by the second reflector 2231 of the frustum sidewall 223, so as to change the light-emitting direction and increase the spatial pointing angle thereof. It can be understood that if the spatial pointing angle of the outgoing light beam of any vector sub-pixel is increased, the original viewing angle formed by the outgoing light beam of the vector pixel can be expanded, so that the display panel meets the requirement of a user for viewing at a large angle.
Specifically, fig. 5 and 6 show schematic optical path diagrams when the spatial pointing angle of the emergent light beam is smaller than the inclination angle of the frustum sidewall 223, wherein a part of the original light beam directly exits from the opening and the outer side of the hollow frustum 220, another part of the original light beam is reflected by the second mirror 2231 to form an expanded light beam, and the spatial pointing angle of the expanded light beam is larger than that of the original light beam. Fig. 7 shows a schematic diagram of the light path when the spatial pointing angle of the emergent beam is larger than the inclination angle of the frustum sidewall 223, and it can be seen that the expanded beam is emergent almost in the horizontal direction, and the spatial pointing angle of the expanded beam is larger than that of the original beam. As can be seen from fig. 5-7, the present solution can increase the spatial pointing angle of any outgoing beam, and thus can expand the viewing angle of vector pixels.
Further, since the spatial pointing angles of the light beams emitted from the light-emitting surface of the optical assembly 120 are different, the light absorption films are disposed on the first surface, the second surface and the third surface of the frustum sidewall 223 in the present embodiment, so that a part of the light beams entering the hollow frustum 220 can be absorbed by the light absorption films (see fig. 7), thereby reducing the interference of the non-target light beams. In addition, for example, the shapes of the first opening 221 and the second opening 222 may be rectangular and may correspond to the shape of the display panel, so that the light beams emitted from the light-emitting surface of the optical assembly 120 may be reflected by the plurality of second reflectors to form a plurality of expanded light beams. As described with reference to the previous embodiment, since the divergence angle of each light beam is small, the probability that light in other directions, which is generated to generate a light beam with a large spatial pointing angle toward the human eye, will generate visual interference is small and negligible.
Further optionally, the first opening 221 and the second opening 222 are arranged in parallel, and a distance between the first opening 221 and the second opening 222 is a first preset distance; a first preset included angle is formed between the side wall of the frustum and the light-emitting surface of the vector pixel.
Specifically, by reasonably setting the height of the hollow frustum 220, the inclination angle of the frustum side wall 223, and the side lengths of the first opening 221 and the second opening 222, the light emitting brightness in each direction can be balanced, and a person skilled in the art can set the first preset distance and the first preset included angle by himself, which is not limited in the embodiment of the present invention.
In summary, the reflective component may be formed by a reflective mirror component, and specifically may be disposed between the dense display device and the optical component, or may be disposed on the light-emitting side of the optical component (vector pixel). In addition to the above solution in which the reflective assembly is formed by a reflective assembly, optionally, the reflective assembly includes a transflective assembly; the visual angle formed by the outgoing light beams after the light beams emitted by the vector pixels are reflected by the semi-transparent and semi-reflective component is a reflection visual angle, and the visual angle formed by the outgoing light beams after the light beams emitted by the vector pixels are transmitted by the semi-transparent and semi-reflective component is an original visual angle; the reflection visual angle is overlapped with the original visual angle, and the expanded visual angle is the sum of the original visual angle and the reflection visual angle.
Because the transflective assembly can transmit a part of incident light and reflect the other part of the incident light to change the direction of a part of light beams, the purpose of expanding the vector pixel viewing angle can be achieved as long as the position of the transflective assembly is reasonably set to enable the reflected light beams and the transmitted light beams to be overlapped.
For example, fig. 8 is a schematic structural diagram of a vector pixel unit according to another embodiment of the present invention and a schematic operational principle thereof. Referring to fig. 8, optionally, the transflective set includes a first transflective mirror 230; the first half-mirror 230 is disposed on the light-emitting side of the vector pixel 100, the first half-mirror 230 covers the light beam emitted by the vector pixel 100 within the original viewing angle, and the reflection surface of the first half-mirror 230 intersects with the light-emitting surface of the vector pixel 100.
As shown in fig. 8, by disposing the first half-mirror 230 in front of the light-emitting side of the vector pixel, a part of the light beams emitted by the vector pixel within the original viewing angle can directly pass through the first half-mirror 230 and exit to the space, the viewing angle formed by the part of the light is still the original viewing angle, another part of the light beams is reflected by the first half-mirror 230 to change the propagation direction, the reflected light beams form the reflected viewing angle, and there is an overlap between the reflected viewing angle and the original viewing angle. Therefore, the sum of the reflection visual angle and the original visual angle is the expansion visual angle, so that the purpose of expanding the vector pixel visual angle is realized, and the display panel meets the requirement of a user for large-angle watching.
As can be seen from fig. 8, in this scheme, the light source position of the outgoing light beam within the increased reflection angle of view is located at the virtual image position 100' of the vector pixel 100 relative to the first half-mirror 230, so that the virtual image of the vector pixel in the half-mirror can be used as a light source pixel, which is equivalent to increasing the number of vector sub-pixels. Fig. 9 is a schematic diagram of a structure of a display panel and a multi-layer display effect thereof according to yet another embodiment of the present invention, referring to fig. 9, optionally, the display panel is a transparent display panel, the display panel further includes a display superposition component, and the display superposition component includes a third reflector 02 and a second half-transparent and half-reflective mirror 03; the third reflector 02 is arranged on the non-display side of the display panel, and the reflection surface of the third reflector 02 is parallel to the display surface of the display panel; the second half-transparent half-reflecting mirror 03 is disposed on the display side of the display panel, and a second preset distance and a second preset included angle are formed between the reflection surface of the second half-transparent half-reflecting mirror 03 and the display surface of the display panel.
Specifically, referring to fig. 9, the area where the vector pixel unit 10 is located constitutes a light emitting area of the display panel, at least one vector pixel unit 10 may be disposed in the light emitting area for displaying an image to be displayed, and accordingly, the light emitting area may be referred to as a vector pixel display screen 01, the vector pixel display screen 01 is a transparent display screen, the light emitting surface of the vector pixel display screen 01 represents a display surface of the display panel, and the non-light emitting surface of the vector pixel display screen 01 represents a non-display side of the display panel.
In this embodiment, the third reflector 02 is disposed on one side of the non-light-emitting surface of the vector pixel display screen 01, and the third reflector 02 is disposed parallel to the vector pixel display screen 01 and is close to the vector pixel display screen 01 and almost negligible. The second half-transparent half-reflecting mirror 03 is disposed on one side of the light-emitting surface of the vector pixel display screen 01, and has a second preset distance and a second preset included angle with the light-emitting surface of the vector pixel display screen 01. Optionally, the second preset distance is less than 10mm, and the second preset included angle is less than 5 °.
As described above, after the eye tracking module determines the pupil position of the user, the vector sub-pixels to be lit in the vector pixels can be determined. For example, referring to fig. 9, it is assumed that a plurality of vector sub-pixels of the vector pixel unit 10 at the position P1 are lighted, wherein a light beam emitted by one vector sub-pixel can directly pass through the second half mirror 03 to reach the user's eye along the light ray 1, and a light beam emitted by another vector sub-pixel reaches the third mirror 02 after being reflected by the second half mirror 03 first, and reaches the user's eye along the light ray 2 after being reflected by the third mirror 02. Specifically, in fig. 9, a virtual image a is a virtual image formed by the vector pixel display screen 01 after being reflected by the second half mirror 03, and the virtual image a obtained at this time cannot be viewed by a user on the second half mirror 03 side. The virtual image B is formed after the virtual image A is reflected by the third reflector 02, and when the user and the display screen are in a dark environment, the eyes can see that a layer of display effect exists at the position of the virtual image B. This is because the divergence angle of the light beams emitted by the vector sub-pixels is small, and the vector sub-pixel set forming the virtual image B is different from the vector sub-pixel set of the vector pixel display panel 01 directly viewed by human eyes, so that the user can only see the vector sub-pixel emitting the light ray 1 on the vector pixel display panel 01 without seeing the vector sub-pixel emitting the light ray 2, and can only see the vector sub-pixel virtual image forming the light ray 2 at the virtual image B without seeing the vector sub-pixel virtual image emitting the light ray 1, thereby achieving the effect of increasing the display layer.
Similarly, the virtual image B sequentially passes through the second semi-transparent and semi-reflective mirror 03 and the third reflective mirror 02, and then a new display layer is formed behind the virtual image B, and so on, and N vector pixel sub-pixels are lighted to form N display layers.
Since the illuminated vector sub-pixels are determined by the eye tracking module, the illuminated vector sub-pixels can be determined to enter the pupils of the user after being acted on by the second half mirror 03 and the third mirror 02.
It should be noted that, in the scheme of adding the display layer by the additional second half-transparent mirror 03 and the additional third mirror 02, the eye tracking module may determine the vector sub-pixel to be lit on the vector pixel display screen 01 according to the pupil position of the user, and the light emitted by the vector sub-pixel to be lit usually does not affect the display of the previous layer after being reflected by the mirror surface. However, since the vector pixel sub-pixel light beam has a certain divergence angle, the sub-pixel beam width of the N +1 th layer is larger than that of the N-th layer, and a display layer spreading collision may occur. Referring to fig. 9, when the user is far away from the vector pixel display screen 01, it may happen that the light ray 2 exiting after being reflected by the mirror surface may pass through the point P1 and the propagation directions of the light rays are almost the same, and the viewing effect at this time has the mutually shielding effect of the point P1 and the point P2. In order to avoid the situation where there is a conflict in the extended display layers, the following extended conflict handling rules are proposed: illustratively, in the displaying process, if a processing module in the display device detects that the luminance of two vector sub-pixels is consistent, both vector sub-pixels are turned on; and if the brightness of the vector sub-pixels is not consistent, lightening the vector sub-pixels for displaying the previous display layer. In general, when the extended display layers are found to collide with each other, the brightness of the previous display layer is ensured to be greater than that of the subsequent display layer, so as to avoid the collision of the extended display layers and influence on the visual effect of the user.
It should be noted that, if a large number of layers are to be displayed, the ambient brightness of the display device can be appropriately adjusted. This is because when the environment where the user is located is bright, the user can view the image of the user himself and the image of the environment where the user is located in the mirror, so the brightness of the user needs to be limited, the limited degree may be related to the number of the expanded display layers, and when the brightness of the expanded display layers is greater than the brightness of the environment where the user is located, the user can view the display layers.
It should be further noted that, in this embodiment, the vector pixels may extend the viewing angle by any of the methods described above, and the vector pixel display screen 01 is formed by at least one vector pixel unit 10, and on this basis, the number of display layers is increased by adding the second half mirror 03 and the third mirror 02. In an actual product, if the viewing angle formed by the light beams emitted by the vector pixels is sufficient to meet the viewing requirement of a user, the vector pixels in the vector pixel display screen 01 may not be processed to expand the viewing angle, that is, no reflective component is provided, which is not limited in the embodiment of the present invention. The scheme of increasing the effect of the display layer by matching the semi-transparent semi-reflecting mirror and the reflecting mirror is within the protection scope of the invention.
In addition, an embodiment of the present invention further provides a display device, which includes the display panel provided in any of the embodiments, and therefore, the display device has the same beneficial effects as the display panel, which are not described herein again.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. A display panel, comprising: at least one vector pixel unit; the vector pixel unit comprises a vector pixel and a reflecting component, and the reflecting component is at least used for reflecting the light beam emitted by the vector pixel;
the view angle formed by the light beams emitted by the vector pixel units is an expanded view angle, the view angle formed by the light beams emitted by the vector pixels is an original view angle, and the expanded view angle is larger than the original view angle;
the reflective assembly comprises a reflective mirror assembly;
the vector pixels comprise a dense display device and an optical component; the dense display device comprises at least two light-emitting elements, the at least two light-emitting elements comprise a first light-emitting element and a second light-emitting element, light beams emitted by the first light-emitting element are emitted by the optical assembly to form a first original light beam, and light beams emitted by the second light-emitting element are emitted by the optical assembly to form a second original light beam; the first original beam and the second original beam form the original perspective;
the light beam emitted by the first light-emitting element is emitted through the optical assembly and the reflector assembly to form a first expanded light beam, and the light beam emitted by the second light-emitting element is emitted through the optical assembly and the reflector assembly to form a second expanded light beam; any two light beams of the first original light beam, the second original light beam, the first expanded light beam and the second expanded light beam form a plurality of first viewing angles, and the maximum value of the plurality of first viewing angles is the expanded viewing angle;
the mirror assembly comprises at least one first mirror;
the at least one first reflector is arranged between the dense display device and the optical assembly, and a reflecting surface of the first reflector is intersected with the bottom surface of the dense display device; the light beam emitted by the first light-emitting element is reflected by the first reflector and then emitted by the optical component to form the first expanded light beam; the light beam emitted by the second light-emitting element is reflected by the first reflector and then emitted by the optical component to form the second expanded light beam.
2. The display panel according to claim 1, wherein the at least two light-emitting elements include a plurality of light-emitting elements forming a light-emitting element array;
the at least one first reflector is arranged around the light emitting element array, and the reflecting surface of the first reflector is perpendicular to the bottom surface of the dense display device.
3. A display panel, comprising: at least one vector pixel unit; the vector pixel unit comprises a vector pixel and a reflecting component, and the reflecting component is at least used for reflecting the light beam emitted by the vector pixel;
the view angle formed by the light beams emitted by the vector pixel units is an expanded view angle, the view angle formed by the light beams emitted by the vector pixels is an original view angle, and the expanded view angle is larger than the original view angle;
the reflective assembly comprises a reflective mirror assembly;
the vector pixels comprise a dense display device and an optical component; the dense display device comprises at least two light-emitting elements, the at least two light-emitting elements comprise a first light-emitting element and a second light-emitting element, light beams emitted by the first light-emitting element are emitted by the optical assembly to form a first original light beam, and light beams emitted by the second light-emitting element are emitted by the optical assembly to form a second original light beam; the first original beam and the second original beam form the original perspective;
the light beam emitted by the first light-emitting element is emitted through the optical assembly and the reflector assembly to form a first expanded light beam, and the light beam emitted by the second light-emitting element is emitted through the optical assembly and the reflector assembly to form a second expanded light beam; any two light beams of the first original light beam, the second original light beam, the first expanded light beam and the second expanded light beam form a plurality of first viewing angles, and the maximum value of the plurality of first viewing angles is the expanded viewing angle;
the reflector component comprises a hollow frustum, the hollow frustum comprises a first opening, a second opening and a frustum side wall connecting the first opening and the second opening, the frustum side wall comprises a first surface and a second surface which are oppositely arranged and a third surface and a fourth surface which are oppositely arranged, the first surface and the first opening are positioned on the same plane, the second surface and the second opening are positioned on the same plane, the third surface is a surface of the frustum side wall close to one side of the first opening and the second opening, the fourth surface is a surface of the frustum side wall far away from one side of the first opening and the second opening, light absorption films are arranged on the first surface, the second surface and the third surface, and a second reflector is arranged on the fourth surface;
the hollow frustum is arranged on the light emitting surface of the vector pixel, the second opening is positioned on one side, away from the light emitting surface, of the first opening, and the vertical projection of the second opening on the light emitting surface covers the vertical projection of the first opening on the light emitting surface;
the light beam emitted by the first light-emitting element is emitted by the optical component and then reflected by the second reflector to form the first expanded light beam; the light beam emitted by the second light-emitting element is emitted by the optical component and reflected by the second reflector to form the second expanded light beam.
4. The display panel according to claim 3, wherein the first opening and the second opening are arranged in parallel, and a distance between the first opening and the second opening is a first preset distance; a first preset included angle is formed between the side wall of the frustum and the light emergent surface of the vector pixel.
5. A display panel, comprising: at least one vector pixel unit; the vector pixel unit comprises a vector pixel and a reflecting component, and the reflecting component is at least used for reflecting the light beam emitted by the vector pixel;
the view angle formed by the light beams emitted by the vector pixel units is an expanded view angle, the view angle formed by the light beams emitted by the vector pixels is an original view angle, and the expanded view angle is larger than the original view angle; the reflection assembly comprises a semi-transparent semi-reflection assembly;
the visual angle formed by the outgoing light beams after the light beams emitted by the vector pixels are reflected by the semi-transparent and semi-reflective component is a reflection visual angle, and the visual angle formed by the outgoing light beams after the light beams emitted by the vector pixels are transmitted by the semi-transparent and semi-reflective component is the original visual angle;
the reflection viewing angle overlaps with the original viewing angle, and the extended viewing angle is the sum of the original viewing angle and the reflection viewing angle.
6. The display panel of claim 5, wherein the transflective assembly comprises a first transflective mirror;
the first transflective mirror is arranged on the light emergent side of the vector pixel, covers the light beam emitted by the vector pixel within the original visual angle, and has a reflecting surface intersected with the light emergent surface of the vector pixel.
7. The display panel according to any one of claims 1 to 6, wherein the display panel is a transparent display panel, the display panel further comprising a display stack assembly, the display stack assembly comprising a third mirror and a second transflective mirror;
the third reflector is arranged on the non-display side of the display panel, and the reflecting surface of the third reflector is parallel to the display surface of the display panel;
the second semi-transparent and semi-reflective mirror is arranged on the display side of the display panel, the reflecting surface of the second semi-transparent and semi-reflective mirror is away from the display surface of the display panel by a second preset distance, and a second preset included angle is formed.
8. A display device characterized by comprising the display panel according to any one of claims 1 to 7.
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| CN202010807398.5A CN111899646B (en) | 2020-08-12 | 2020-08-12 | Display panel and display device |
| PCT/CN2021/078852 WO2022033014A1 (en) | 2020-08-12 | 2021-03-03 | Display panel and display device |
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| WO2022033014A1 (en) | 2022-02-17 |
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